Bump fmt to 11.1.4

FILE_SET functionality was introduced in CMake version 3.23.

https://cmake.org/cmake/help/latest/command/target_sources.html

.clang-format

@@ -0,0 +1,19 @@
+---
+Language:        Cpp
+BasedOnStyle:  Google
+AccessModifierOffset: -4
+Standard:        c++17
+IndentWidth:     4
+TabWidth:        4
+UseTab:          Never
+ColumnLimit:     130
+AlignAfterOpenBracket: Align
+BinPackParameters: false
+AlignEscapedNewlines: Left
+AlwaysBreakTemplateDeclarations: Yes
+PackConstructorInitializers: Never
+BreakConstructorInitializersBeforeComma: false
+IndentPPDirectives: BeforeHash
+SortIncludes: CaseInsensitive
+...
+

.clang-tidy

@@ -1,10 +1,37 @@
-Checks: 'modernize-*,modernize-use-override,google-*,-google-runtime-references,misc-*,clang-analyzer-*,-misc-non-private-member-variables-in-classes'
+Checks: 'cppcoreguidelines-*,
+performance-*,
+modernize-*,
+google-*,
+misc-*
+cert-*,
+readability-*,
+clang-analyzer-*,
+-performance-unnecessary-value-param,
+-modernize-use-trailing-return-type,
+-google-runtime-references,
+-misc-non-private-member-variables-in-classes,
+-readability-braces-around-statements,
+-readability-identifier-length,
+-google-readability-braces-around-statements,
+-cppcoreguidelines-avoid-magic-numbers,
+-readability-magic-numbers,
+-readability-magic-numbers,
+-cppcoreguidelines-pro-type-vararg,
+-cppcoreguidelines-pro-bounds-pointer-arithmetic,
+-cppcoreguidelines-avoid-c-arrays,
+-modernize-avoid-c-arrays,
+-cppcoreguidelines-pro-bounds-array-to-pointer-decay,
+-readability-named-parameter,
+-cert-env33-c,
+-modernize-concat-nested-namespaces,
+-cppcoreguidelines-owning-memory
+'
+
+
 WarningsAsErrors: ''
-HeaderFilterRegex: 'async.h|async_logger.h|common.h|details|formatter.h|logger.h|sinks|spdlog.h|tweakme.h|version.h'
-AnalyzeTemporaryDtors: false
 FormatStyle:     none
 
-CheckOptions:    
+CheckOptions:
   - key:             google-readability-braces-around-statements.ShortStatementLines
     value:           '1'
   - key:             google-readability-function-size.StatementThreshold
@@ -25,4 +52,3 @@ CheckOptions:
     value:           llvm
   - key:             modernize-use-nullptr.NullMacros
     value:           'NULL'
-

.github/workflows/linux.yml

@@ -0,0 +1,61 @@
+name: linux
+
+on: [push, pull_request]
+
+permissions:
+  contents: read
+
+jobs:
+  # -----------------------------------------------------------------------
+  # Linux build matrix
+  # -----------------------------------------------------------------------
+  build:
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        shell: bash
+    strategy:
+      fail-fast: false
+      matrix:
+        config:
+          - { compiler: gcc, version: 9, build_type: Release, cppstd: 17 }
+          - { compiler: gcc, version: 11, build_type: Debug, cppstd: 20 }
+          - { compiler: gcc, version: 12, build_type: Release, cppstd: 20 }
+          - { compiler: gcc, version: 12, build_type: Debug, cppstd: 20, asan: ON }
+          - { compiler: clang, version: 12, build_type: Debug, cppstd: 17 }
+          - { compiler: clang, version: 15, build_type: Debug, cppstd: 20, tsan: ON }
+    container:
+      image: ${{ matrix.config.compiler == 'clang' && 'teeks99/clang-ubuntu' || matrix.config.compiler }}:${{ matrix.config.version }}
+    name: "${{ matrix.config.compiler}} ${{ matrix.config.version }} (C++${{ matrix.config.cppstd }} ${{ matrix.config.build_type }} ${{ matrix.config.asan == 'ON' && 'ASAN' || '' }}${{ matrix.config.tsan == 'ON' && 'TSAN' || '' }})"
+    steps:
+      - uses: actions/checkout@v4
+      - name: Setup
+        run: |
+          apt-get update
+          apt-get install -y curl git pkg-config libsystemd-dev
+          CMAKE_VERSION="3.24.2"
+          curl -sSL https://github.com/Kitware/CMake/releases/download/v${CMAKE_VERSION}/cmake-${CMAKE_VERSION}-linux-x86_64.sh -o install-cmake.sh
+          chmod +x install-cmake.sh
+          ./install-cmake.sh --prefix=/usr/local --skip-license
+      - name: Setup Compiler
+        if: matrix.config.compiler == 'clang'
+        run: |
+          scripts/ci_setup_clang.sh "${{ matrix.config.version }}"
+          echo "CXXFLAGS=-stdlib=libc++" >> $GITHUB_ENV          
+          echo "CC=clang-${{ matrix.config.version }}" >> $GITHUB_ENV
+          echo "CXX=clang++-${{ matrix.config.version }}" >> $GITHUB_ENV
+      - name: Build
+        run: |
+          mkdir -p build && cd build
+          cmake .. \
+            -DCMAKE_BUILD_TYPE=${{ matrix.config.build_type }} \
+            -DCMAKE_CXX_STANDARD=${{ matrix.config.cppstd }} \
+            -DSPDLOG_BUILD_EXAMPLE=${{ matrix.config.examples || 'ON' }} \
+            -DSPDLOG_BUILD_WARNINGS=ON \
+            -DSPDLOG_BUILD_BENCH=OFF \
+            -DSPDLOG_BUILD_TESTS=ON \
+            -DSPDLOG_SANITIZE_ADDRESS=${{ matrix.config.asan || 'OFF' }} \
+            -DSPDLOG_SANITIZE_ADDRESS=${{ matrix.config.asan || 'OFF' }} \
+            -DSPDLOG_SANITIZE_THREAD=${{ matrix.config.tsan || 'OFF' }}
+          make -j 4
+          ctest -j 4 --output-on-failure          

.github/workflows/macos.yml

@@ -0,0 +1,26 @@
+name: macos
+
+on: [push, pull_request]
+
+permissions:
+  contents: read
+
+jobs:
+  build:
+    runs-on: macOS-latest
+    name: "macOS Clang (C++17, Release)"
+    steps:
+      - uses: actions/checkout@v4
+      - name: Build
+        run: |
+          mkdir -p build && cd build
+          cmake .. \
+            -DCMAKE_BUILD_TYPE=Release \
+            -DCMAKE_CXX_STANDARD=17 \
+            -DSPDLOG_BUILD_EXAMPLE=ON \
+            -DSPDLOG_BUILD_WARNINGS=ON \
+            -DSPDLOG_BUILD_BENCH=OFF \
+            -DSPDLOG_BUILD_TESTS=ON \
+            -DSPDLOG_SANITIZE_ADDRESS=OFF
+          make -j 4
+          ctest -j 4 --output-on-failure

.github/workflows/windows.yml

@@ -0,0 +1,113 @@
+name: windows
+
+on: [push, pull_request]
+
+permissions:
+  contents: read
+
+jobs:
+  build:
+    runs-on: windows-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        config:
+          - GENERATOR: "Visual Studio 17 2022"
+            BUILD_TYPE: Release
+            BUILD_SHARED: 'ON'
+            FATAL_ERRORS: 'ON'
+            BUILD_EXAMPLE: 'OFF'
+            CXX_STANDARD: 20
+          - GENERATOR: "Visual Studio 17 2022"
+            BUILD_TYPE: Release
+            BUILD_SHARED: 'ON'
+            FATAL_ERRORS: 'ON'
+            BUILD_EXAMPLE: 'OFF'
+            CXX_STANDARD: 17
+          - GENERATOR: "Visual Studio 17 2022"
+            BUILD_TYPE: Release
+            BUILD_SHARED: 'OFF'
+            FATAL_ERRORS: 'ON'
+            BUILD_EXAMPLE: 'ON'
+            CXX_STANDARD: 17
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: CMake ${{ matrix.config.GENERATOR }} CXX=${{matrix.config.CXX_STANDARD}}
+        shell: pwsh
+        run: |
+          mkdir build
+          cd build
+          cmake -G "${{ matrix.config.GENERATOR }}"  -A x64 `
+            -D CMAKE_BUILD_TYPE=${{ matrix.config.BUILD_TYPE }} `
+            -D BUILD_SHARED_LIBS=${{ matrix.config.BUILD_SHARED }} `
+            -D SPDLOG_BUILD_EXAMPLE=${{ matrix.config.BUILD_EXAMPLE }} `
+            -D SPDLOG_BUILD_TESTS=ON `
+            -D SPDLOG_BUILD_WARNINGS=${{ matrix.config.FATAL_ERRORS }} `
+            -D CMAKE_CXX_STANDARD=${{ matrix.config.CXX_STANDARD }} ..
+
+      - name: Build
+        shell: pwsh
+        run: |
+          cd build
+          cmake --build  . --parallel --config ${{ matrix.config.BUILD_TYPE }}
+
+      - name: Run Tests
+        shell: pwsh
+        env:
+          PATH: ${{ env.PATH }};${{ github.workspace }}\build\_deps\catch2-build\src\${{ matrix.config.BUILD_TYPE }};${{ github.workspace }}\build\bin\${{ matrix.config.BUILD_TYPE }}
+        run: ${{ github.workspace }}\build\bin\${{ matrix.config.BUILD_TYPE }}\spdlog-utests.exe
+
+
+  # -----------------------------------------------------------------------
+  # MSVC 2019 build matrix
+  # -----------------------------------------------------------------------
+  build_2019:
+    runs-on: windows-2019
+    strategy:
+      fail-fast: true
+      matrix:
+        config:
+          - GENERATOR: "Visual Studio 16 2019"
+            BUILD_TYPE: Release
+            BUILD_SHARED: 'ON'
+            FATAL_ERRORS: 'ON'
+            BUILD_EXAMPLE: 'ON'
+            CXX_STANDARD: 17
+          - GENERATOR: "Visual Studio 16 2019"
+            BUILD_TYPE: Release
+            BUILD_SHARED: 'ON'
+            FATAL_ERRORS: 'ON'
+            BUILD_EXAMPLE: 'ON'
+            CXX_STANDARD: 20
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: CMake ${{ matrix.config.GENERATOR }} CXX=${{matrix.config.CXX_STANDARD}}
+        shell: pwsh
+        run: |
+          mkdir build
+          cd build
+          cmake -G "${{ matrix.config.GENERATOR }}"  -A x64 `
+            -D CMAKE_BUILD_TYPE=${{ matrix.config.BUILD_TYPE }} `
+            -D BUILD_SHARED_LIBS=${{ matrix.config.BUILD_SHARED }} `
+            -D SPDLOG_BUILD_EXAMPLE=${{ matrix.config.BUILD_EXAMPLE }} `
+            -D SPDLOG_BUILD_TESTS=ON `
+            -D SPDLOG_BUILD_WARNINGS=${{ matrix.config.FATAL_ERRORS }} `
+            -D CMAKE_CXX_STANDARD=${{ matrix.config.CXX_STANDARD }} ..
+
+      - name: Build
+        shell: pwsh
+        run: |
+          cd build
+          cmake --build  . --parallel --config ${{ matrix.config.BUILD_TYPE }}
+
+      - name: Run Tests
+        shell: pwsh
+        env:
+          PATH: ${{ env.PATH }};${{ github.workspace }}\build\_deps\catch2-build\src\${{ matrix.config.BUILD_TYPE }};${{ github.workspace }}\build\bin\${{ matrix.config.BUILD_TYPE }}
+        run: ${{ github.workspace }}\build\bin\${{ matrix.config.BUILD_TYPE }}\spdlog-utests.exe

.gitignore

@@ -1,4 +1,7 @@
 # Auto generated files
+include/spdlog/spdlog_config.h
+[Dd]ebug/
+[Rr]elease/
 build/*
 *.slo
 *.lo
@@ -40,21 +43,10 @@ build/*
 # .orig files
 *.orig
 
-# example  files
-example/*
-!example/example.cpp
-!example/bench.cpp
-!example/utils.h
-!example/Makefile*
-!example/example.sln
-!example/example.vcxproj
-!example/CMakeLists.txt
-!example/meson.build
-!example/multisink.cpp
-!example/jni
 
 # generated files
 generated
+version.rc
 
 # Cmake
 CMakeCache.txt
@@ -67,9 +59,14 @@ install_manifest.txt
 /tests/tests.VC.db
 /tests/tests
 /tests/logs/*
+spdlogConfig.cmake
+spdlogConfigVersion.cmake
+compile_commands.json
 
 # idea
 .idea/
+.cache/
+.vscode/
 cmake-build-*/
 *.db
 *.ipch
@@ -81,3 +78,10 @@ cmake-build-*/
 *.tcl
 *.user
 *.sln
+
+# macos
+*.DS_store
+*.xcodeproj/
+/.vs
+/out/build
+/CMakeSettings.json

.travis.yml

@@ -1,111 +0,0 @@
-# Adapted from various sources, including:
-# - Louis Dionne's Hana: https://github.com/ldionne/hana
-# - Paul Fultz II's FIT: https://github.com/pfultz2/Fit
-# - Eric Niebler's range-v3: https://github.com/ericniebler/range-v3
-sudo: required
-language: cpp
-
-# gcc 4.8
-addons: &gcc48
-  apt:
-    packages:
-      - g++-4.8
-    sources:
-      - ubuntu-toolchain-r-test
-
-# gcc 7.0
-addons: &gcc7
-  apt:
-    packages:
-      - g++-7
-    sources:
-      - ubuntu-toolchain-r-test
-
-# Clang 3.5
-addons: &clang35
-  apt:
-    packages:
-      - clang-3.5
-    sources:
-      - ubuntu-toolchain-r-test
-      - llvm-toolchain-precise-3.5
-      
-# Clang 7.0
-addons: &clang70
-  apt:
-    packages:
-      - clang-7      
-    sources:
-      - ubuntu-toolchain-r-test
-      - llvm-toolchain-trusty-7
-
-
-
-matrix:
-  include:
-    # Test gcc-4.8: C++11, Build=Debug/Release
-    - env: GCC_VERSION=4.8 BUILD_TYPE=Debug CPP=11
-      os: linux
-      addons: *gcc48
-
-    - env: GCC_VERSION=4.8 BUILD_TYPE=Release CPP=11
-      os: linux
-      addons: *gcc48
-
-    - env: GCC_VERSION=7 BUILD_TYPE=Release CPP=11
-      os: linux
-      addons: *gcc7
-
-    # Test clang-3.5: C++11, Build=Debug/Release
-    - env: CLANG_VERSION=3.5 BUILD_TYPE=Debug CPP=11
-      os: linux
-      addons: *clang35
-
-    - env: CLANG_VERSION=3.5 BUILD_TYPE=Release CPP=11
-      os: linux
-      addons: *clang35
-
-      # Test clang-7.0: C++11, Build=Debug, ASAN=On
-    - env: CLANG_VERSION=7 BUILD_TYPE=Debug CPP=11 ASAN=On TSAN=Off
-      dist: bionic      
-
-    - env: CLANG_VERSION=7 BUILD_TYPE=Release CPP=11 ASAN=On TSAN=Off
-      dist: bionic
-      
-      # osx
-    - env: BUILD_TYPE=Release CPP=11 ASAN=Off TSAN=Off
-      os: osx
-
-
-
-before_script:
-  - if [ -n "$GCC_VERSION" ]; then export CXX="g++-${GCC_VERSION}" CC="gcc-${GCC_VERSION}"; fi
-  - if [ -n "$CLANG_VERSION" ]; then export CXX="clang++-${CLANG_VERSION}" CC="clang-${CLANG_VERSION}"; fi
-  - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then export CXX="clang++" CC="clang"; fi
-  - which $CXX
-  - which $CC
-  - $CXX --version
-  - cmake --version
-
-script:
-  - cd ${TRAVIS_BUILD_DIR}
-  - mkdir -p build && cd build
-  - |
-    cmake .. \
-      --warn-uninitialized \
-      -DCMAKE_BUILD_TYPE=$BUILD_TYPE \
-      -DCMAKE_CXX_STANDARD=$CPP \
-      -DSPDLOG_BUILD_EXAMPLE=ON \
-      -DSPDLOG_BUILD_EXAMPLE_HO=ON \
-      -DSPDLOG_BUILD_BENCH=OFF \
-      -DSPDLOG_BUILD_TESTS=ON \
-      -DSPDLOG_BUILD_TESTS_HO=OFf \
-      -DSPDLOG_SANITIZE_ADDRESS=$ASAN 
-      
-  - make VERBOSE=1 -j2
-  - ctest -j2 --output-on-failure
-
-
-
-notifications:
-  email: false

CMakeLists.txt

@@ -1,234 +1,310 @@
-# Copyright(c) 2019 spdlog authors
+# ---------------------------------------------------------------------------------------
+# Copyright(c) 2019-present by spdlog authors.
 # Distributed under the MIT License (http://opensource.org/licenses/MIT)
-
-cmake_minimum_required(VERSION 3.2)
-
-#---------------------------------------------------------------------------------------
-# Start spdlog project
-#---------------------------------------------------------------------------------------
-include(GNUInstallDirs)
+# ---------------------------------------------------------------------------------------
+cmake_minimum_required(VERSION 3.23)
 include(cmake/utils.cmake)
 include(cmake/ide.cmake)
-
 spdlog_extract_version()
-
-#---------------------------------------------------------------------------------------
-# Set default build to release
-#---------------------------------------------------------------------------------------
-if(NOT CMAKE_BUILD_TYPE)
-    set(CMAKE_BUILD_TYPE "Release" CACHE STRING "Choose Release or Debug" FORCE)
-endif()
-
 project(spdlog VERSION ${SPDLOG_VERSION} LANGUAGES CXX)
-message(STATUS "Build spdlog: ${SPDLOG_VERSION}")
-
-#---------------------------------------------------------------------------------------
+include(GNUInstallDirs)
+set_property(GLOBAL PROPERTY USE_FOLDERS ON)
+# ---------------------------------------------------------------------------------------
+# Set default build to release
+# ---------------------------------------------------------------------------------------
+if (NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
+    set(CMAKE_BUILD_TYPE "Release" CACHE STRING "Choose Release or Debug" FORCE)
+endif ()
+# ---------------------------------------------------------------------------------------
 # Compiler config
-#---------------------------------------------------------------------------------------
-set(CMAKE_CXX_STANDARD 11)
+# ---------------------------------------------------------------------------------------
+# C++ standard >=17 is required
+if (NOT DEFINED CMAKE_CXX_STANDARD)
+    set(CMAKE_CXX_STANDARD 17)
+elseif (CMAKE_CXX_STANDARD LESS 17)
+    message(FATAL_ERROR "Minimum supported CMAKE_CXX_STANDARD is 17, but it is set to ${CMAKE_CXX_STANDARD}")
+endif ()
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 set(CMAKE_CXX_EXTENSIONS OFF)
-
-#---------------------------------------------------------------------------------------
+if (CMAKE_SYSTEM_NAME MATCHES "CYGWIN" OR CMAKE_SYSTEM_NAME MATCHES "MSYS" OR CMAKE_SYSTEM_NAME MATCHES "MINGW")
+    set(CMAKE_CXX_EXTENSIONS ON)
+endif ()
+# ---------------------------------------------------------------------------------------
 # Set SPDLOG_MASTER_PROJECT to ON if we are building spdlog
-#---------------------------------------------------------------------------------------
+# ---------------------------------------------------------------------------------------
 # Check if spdlog is being used directly or via add_subdirectory, but allow overriding
 if (NOT DEFINED SPDLOG_MASTER_PROJECT)
     if (CMAKE_CURRENT_SOURCE_DIR STREQUAL CMAKE_SOURCE_DIR)
         set(SPDLOG_MASTER_PROJECT ON)
-    else()
+    else ()
         set(SPDLOG_MASTER_PROJECT OFF)
-    endif()
+    endif ()
 endif ()
-
-# build shared option
-if(NOT WIN32)
-    option(SPDLOG_BUILD_SHARED "Build shared library" OFF)
-endif()
-
-# example options
+# ---------------------------------------------------------------------------------------
+# Options
+# ---------------------------------------------------------------------------------------
+option(SPDLOG_BUILD_ALL "Build all artifacts" OFF)
+option(SPDLOG_BUILD_SHARED "Build shared library" OFF)
 option(SPDLOG_BUILD_EXAMPLE "Build example" ${SPDLOG_MASTER_PROJECT})
-option(SPDLOG_BUILD_EXAMPLE_HO "Build header only example" OFF)
-
-# testing options
-option(SPDLOG_BUILD_TESTS "Build tests" ${SPDLOG_MASTER_PROJECT})
-option(SPDLOG_BUILD_TESTS_HO "Build tests using the header only version" OFF)
-
-# bench options
+option(SPDLOG_BUILD_TESTS "Build tests" OFF)
 option(SPDLOG_BUILD_BENCH "Build benchmarks (Requires https://github.com/google/benchmark.git to be installed)" OFF)
-
-# sanitizer options
 option(SPDLOG_SANITIZE_ADDRESS "Enable address sanitizer in tests" OFF)
-
-# install options
+option(SPDLOG_BUILD_WARNINGS "Enable compiler warnings" OFF)
+option(SPDLOG_SYSTEM_INCLUDES "Include as system headers (skip for clang-tidy)." OFF)
 option(SPDLOG_INSTALL "Generate the install target" ${SPDLOG_MASTER_PROJECT})
-option(SPDLOG_FMT_EXTERNAL "Use external fmt library instead of bundled" OFF)
-
-if(WIN32)
-	option(SPDLOG_WCHAR_SUPPORT "Support wchar api" OFF)
-    option(SPDLOG_WCHAR_FILENAMES "Support wchar filenames" OFF)    
-endif()
-
-option(SPDLOG_NO_EXCEPTIONS "Compile with -fno-exceptions. Call abort() on any spdlog exceptions" OFF)
-
-
-find_package(Threads REQUIRED)
-
-message(STATUS "Build type: " ${CMAKE_BUILD_TYPE})
-
-#---------------------------------------------------------------------------------------
-# Static/Shared library (shared not supported in windows yet)
-#---------------------------------------------------------------------------------------
-set(SPDLOG_SRCS
-        src/spdlog.cpp
-        src/stdout_sinks.cpp
-        src/fmt.cpp
-        src/color_sinks.cpp
-        src/file_sinks.cpp
-        src/async.cpp)
-
+option(SPDLOG_FMT_EXTERNAL "Use external fmt library instead of of fetching from gitub." OFF)
+if (${CMAKE_SYSTEM_NAME} STREQUAL "Linux")
+    option(SPDLOG_CLOCK_COARSE "Use CLOCK_REALTIME_COARSE instead of the regular clock," OFF)
+else ()
+    set(SPDLOG_CLOCK_COARSE OFF CACHE BOOL "non supported option" FORCE)
+endif ()
+option(SPDLOG_PREVENT_CHILD_FD "Prevent from child processes to inherit log file descriptors" OFF)
+option(SPDLOG_NO_THREAD_ID "prevent spdlog from querying the thread id on each log call if thread id is not needed" OFF)
+option(SPDLOG_DISABLE_GLOBAL_LOGGER "Disable global logger creation" OFF)
+option(SPDLOG_NO_TLS "Disable thread local storage" OFF)
+option(SPDLOG_TIDY "run clang-tidy" OFF)
+if (SPDLOG_TIDY)
+    set(CMAKE_CXX_CLANG_TIDY "clang-tidy")
+    set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
+    message(STATUS "Enabled clang-tidy")
+endif ()
 if (SPDLOG_BUILD_SHARED)
-    if(WIN32)
-        message(FATAL_ERROR "spdlog shared lib is not yet supported under windows")
-    endif()
-    add_library(spdlog SHARED ${SPDLOG_SRCS} ${SPDLOG_ALL_HEADERS})
-else()
-    add_library(spdlog STATIC ${SPDLOG_SRCS} ${SPDLOG_ALL_HEADERS})
-endif()
-
+    set(BUILD_SHARED_LIBS ON)
+    set(CMAKE_POSITION_INDEPENDENT_CODE ON)
+endif ()
+if (CMAKE_CXX_COMPILER_ID STREQUAL "MSVC")
+    # place dlls and libs and executables in the same directory
+    set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin/$<CONFIG>)
+    set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin/$<CONFIG>)
+    set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin/$<CONFIG>)
+    set(CMAKE_PDB_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin/$<CONFIG>)
+    # make sure __cplusplus is defined
+    add_compile_options(/Zc:__cplusplus)
+    # enable parallel build for the solution
+    add_compile_options(/MP)
+endif ()
+message(STATUS "spdlog version: ${SPDLOG_VERSION}")
+message(STATUS "spdlog build type: " ${CMAKE_BUILD_TYPE})
+message(STATUS "spdlog build shared: " ${BUILD_SHARED_LIBS})
+message(STATUS "spdlog fmt external: " ${SPDLOG_FMT_EXTERNAL})
+# ---------------------------------------------------------------------------------------
+# Find {fmt} library
+# ---------------------------------------------------------------------------------------
+if (SPDLOG_FMT_EXTERNAL)
+    find_package(fmt REQUIRED)
+    message(STATUS "Using external fmt lib version: ${fmt_VERSION}")
+else ()
+    include(cmake/fmtlib.cmake)
+endif ()
+# ---------------------------------------------------------------------------------------
+# Threads library is required
+# ---------------------------------------------------------------------------------------
+find_package(Threads REQUIRED)
+# ---------------------------------------------------------------------------------------
+# Library sources
+# ---------------------------------------------------------------------------------------
+set(SPDLOG_HEADERS
+        "include/spdlog/common.h"
+        "include/spdlog/formatter.h"
+        "include/spdlog/fwd.h"
+        "include/spdlog/logger.h"
+        "include/spdlog/pattern_formatter.h"
+        "include/spdlog/source_loc.h"
+        "include/spdlog/spdlog.h"
+        "include/spdlog/stopwatch.h"
+        "include/spdlog/version.h"
+        "include/spdlog/details/circular_q.h"
+        "include/spdlog/details/file_helper.h"
+        "include/spdlog/details/fmt_helper.h"
+        "include/spdlog/details/log_msg.h"
+        "include/spdlog/details/async_log_msg.h"
+        "include/spdlog/details/mpmc_blocking_q.h"
+        "include/spdlog/details/null_mutex.h"
+        "include/spdlog/details/os.h"
+        "include/spdlog/details/err_helper.h"
+        "include/spdlog/bin_to_hex.h"
+        "include/spdlog/sinks/android_sink.h"
+        "include/spdlog/sinks/base_sink.h"
+        "include/spdlog/sinks/basic_file_sink.h"
+        "include/spdlog/sinks/callback_sink.h"
+        "include/spdlog/sinks/daily_file_sink.h"
+        "include/spdlog/sinks/dist_sink.h"
+        "include/spdlog/sinks/dup_filter_sink.h"
+        "include/spdlog/sinks/hourly_file_sink.h"
+        "include/spdlog/sinks/kafka_sink.h"
+        "include/spdlog/sinks/mongo_sink.h"
+        "include/spdlog/sinks/msvc_sink.h"
+        "include/spdlog/sinks/null_sink.h"
+        "include/spdlog/sinks/ostream_sink.h"
+        "include/spdlog/sinks/qt_sinks.h"
+        "include/spdlog/sinks/ringbuffer_sink.h"
+        "include/spdlog/sinks/rotating_file_sink.h"
+        "include/spdlog/sinks/sink.h"
+        "include/spdlog/sinks/stdout_color_sinks.h"
+        "include/spdlog/sinks/stdout_sinks.h"
+        "include/spdlog/sinks/syslog_sink.h"
+        "include/spdlog/sinks/systemd_sink.h"
+        "include/spdlog/sinks/tcp_sink.h"
+        "include/spdlog/sinks/udp_sink.h"
+        "include/spdlog/sinks/async_sink.h")
+set(SPDLOG_SRCS
+        "src/common.cpp"
+        "src/logger.cpp"
+        "src/pattern_formatter.cpp"
+        "src/spdlog.cpp"
+        "src/details/file_helper.cpp"
+        "src/details/os_filesystem.cpp"
+        "src/details/log_msg.cpp"
+        "src/details/async_log_msg.cpp"
+        "src/details/err_helper.cpp"
+        "src/sinks/base_sink.cpp"
+        "src/sinks/basic_file_sink.cpp"
+        "src/sinks/rotating_file_sink.cpp"
+        "src/sinks/stdout_sinks.cpp"
+        "src/sinks/async_sink.cpp")
+if (WIN32)
+    list(APPEND SPDLOG_SRCS
+            "src/details/os_windows.cpp"
+            "src/sinks/wincolor_sink.cpp")
+    list(APPEND SPDLOG_HEADERS
+            "include/spdlog/sinks/wincolor_sink.h"
+            "include/spdlog/details/tcp_client_windows.h"
+            "include/spdlog/details/udp_client_windows.h"
+            "include/spdlog/details/windows_include.h"
+            "include/spdlog/sinks/win_eventlog_sink.h")
+else ()
+    list(APPEND SPDLOG_SRCS
+            "src/details/os_unix.cpp"
+            "src/sinks/ansicolor_sink.cpp")
+    list(APPEND SPDLOG_HEADERS
+            "include/spdlog/details/tcp_client_unix.h"
+            "include/spdlog/details/udp_client_unix.h"
+            "include/spdlog/sinks/ansicolor_sink.h")
+endif ()
+# ---------------------------------------------------------------------------------------
+# Check if fwrite_unlocked/_fwrite_nolock is available
+# ---------------------------------------------------------------------------------------
+include(CheckSymbolExists)
+if (WIN32)
+    check_symbol_exists(_fwrite_nolock "stdio.h" HAVE_FWRITE_UNLOCKED)
+else ()
+    check_symbol_exists(fwrite_unlocked "stdio.h" HAVE_FWRITE_UNLOCKED)
+endif ()
+if (HAVE_FWRITE_UNLOCKED)
+    set(SPDLOG_FWRITE_UNLOCKED 1)
+endif ()
+# ---------------------------------------------------------------------------------------
+# spdlog library
+# ---------------------------------------------------------------------------------------
+if (BUILD_SHARED_LIBS)
+    if (WIN32)
+        set(VERSION_RC ${CMAKE_CURRENT_BINARY_DIR}/version.rc)
+        configure_file(${CMAKE_CURRENT_SOURCE_DIR}/cmake/version.rc.in ${CMAKE_CURRENT_BINARY_DIR}/version.rc @ONLY)
+    endif ()
+    add_library(spdlog SHARED ${VERSION_RC})
+    target_compile_definitions(spdlog PUBLIC SPDLOG_SHARED_LIB)
+    if (MSVC)
+        # disable dlls related warnings on msvc
+        target_compile_options(spdlog PUBLIC $<$<AND:$<CXX_COMPILER_ID:MSVC>,$<NOT:$<COMPILE_LANGUAGE:CUDA>>>:/wd4251 /wd4275>)
+    endif ()
+else ()
+    add_library(spdlog STATIC)
+endif ()
+set_target_properties(spdlog PROPERTIES CXX_VISIBILITY_PRESET hidden VISIBILITY_INLINES_HIDDEN ON)
 add_library(spdlog::spdlog ALIAS spdlog)
-
-target_compile_definitions(spdlog PUBLIC SPDLOG_COMPILED_LIB)
-target_include_directories(spdlog PUBLIC
-        "$<BUILD_INTERFACE:${CMAKE_CURRENT_LIST_DIR}/include>"
+target_sources(spdlog PRIVATE ${SPDLOG_SRCS})
+target_sources(
+        spdlog
+        PUBLIC FILE_SET pub_headers
+        TYPE HEADERS
+        BASE_DIRS ${CMAKE_CURRENT_SOURCE_DIR}/include
+        FILES ${SPDLOG_HEADERS})
+set(SPDLOG_INCLUDES_LEVEL "")
+if (SPDLOG_SYSTEM_INCLUDES)
+    set(SPDLOG_INCLUDES_LEVEL "SYSTEM")
+endif ()
+target_include_directories(spdlog ${SPDLOG_INCLUDES_LEVEL} PUBLIC "$<BUILD_INTERFACE:${CMAKE_CURRENT_LIST_DIR}/include>"
         "$<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>")
 target_link_libraries(spdlog PUBLIC Threads::Threads)
+target_link_libraries(spdlog PUBLIC fmt::fmt)
 spdlog_enable_warnings(spdlog)
-
-set_target_properties(spdlog PROPERTIES VERSION ${SPDLOG_VERSION} SOVERSION ${SPDLOG_VERSION_MAJOR})
-set_target_properties(spdlog PROPERTIES DEBUG_POSTFIX d)
-
-#---------------------------------------------------------------------------------------
-# Header only version
-#---------------------------------------------------------------------------------------
-add_library(spdlog_header_only INTERFACE)
-add_library(spdlog::spdlog_header_only ALIAS spdlog_header_only)
-
-target_include_directories(spdlog_header_only INTERFACE
-        "$<BUILD_INTERFACE:${CMAKE_CURRENT_LIST_DIR}/include>"
-        "$<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>")
-target_link_libraries(spdlog_header_only INTERFACE Threads::Threads)
-
-
-#---------------------------------------------------------------------------------------
-# Use fmt package if using exertnal fmt
-#---------------------------------------------------------------------------------------
-if(SPDLOG_FMT_EXTERNAL)
-    if (NOT TARGET fmt::fmt)
-        find_package(fmt REQUIRED)
+set_target_properties(spdlog PROPERTIES VERSION ${SPDLOG_VERSION} SOVERSION
+        ${SPDLOG_VERSION_MAJOR}.${SPDLOG_VERSION_MINOR})
+set(SPDLOG_NAME spdlog-${SPDLOG_VERSION_MAJOR})
+set_target_properties(spdlog PROPERTIES DEBUG_POSTFIX "-${SPDLOG_VERSION_MAJOR}.${SPDLOG_VERSION_MINOR}d")
+# ---------------------------------------------------------------------------------------
+# Set prefix and source group for visual studio
+# ---------------------------------------------------------------------------------------
+if (CMAKE_GENERATOR MATCHES "Visual Studio")
+    source_group(TREE ${CMAKE_CURRENT_SOURCE_DIR}/include PREFIX include FILES ${SPDLOG_HEADERS})
+    source_group(TREE ${CMAKE_CURRENT_SOURCE_DIR}/src PREFIX sources FILES ${SPDLOG_SRCS})
+    source_group(sources FILES ${VERSION_RC})
+endif ()
+# ---------------------------------------------------------------------------------------
+# Android support
+# ---------------------------------------------------------------------------------------
+if (ANDROID)
+    target_link_libraries(spdlog PUBLIC log)
+endif ()
+# ---------------------------------------------------------------------------------------
+# Private defines according to the options
+# ---------------------------------------------------------------------------------------
+foreach (SPDLOG_OPTION
+        SPDLOG_CLOCK_COARSE
+        SPDLOG_PREVENT_CHILD_FD
+        SPDLOG_NO_THREAD_ID
+        SPDLOG_DISABLE_GLOBAL_LOGGER
+        SPDLOG_NO_TLS
+        SPDLOG_FWRITE_UNLOCKED)
+    if (${SPDLOG_OPTION})
+        target_compile_definitions(spdlog PRIVATE ${SPDLOG_OPTION})
     endif ()
-    target_compile_definitions(spdlog PUBLIC SPDLOG_FMT_EXTERNAL)
-    target_link_libraries(spdlog PUBLIC fmt::fmt)
-
-    target_compile_definitions(spdlog_header_only INTERFACE SPDLOG_FMT_EXTERNAL)
-    target_link_libraries(spdlog_header_only INTERFACE fmt::fmt)
-
-    set(PKG_CONFIG_REQUIRES fmt) # add dependecy to pkg-config
-endif()
-
-if(SPDLOG_WCHAR_SUPPORT)
-	target_compile_definitions(spdlog PUBLIC SPDLOG_WCHAR_TO_UTF8_SUPPORT)
-	target_compile_definitions(spdlog_header_only INTERFACE SPDLOG_WCHAR_TO_UTF8_SUPPORT)
- endif()
-
- if(SPDLOG_WCHAR_FILENAMES)
-	target_compile_definitions(spdlog PUBLIC SPDLOG_WCHAR_FILENAMES)
-	target_compile_definitions(spdlog_header_only INTERFACE SPDLOG_WCHAR_FILENAMES)
- endif()
-
- if(SPDLOG_NO_EXCEPTIONS)
-	target_compile_definitions(spdlog PUBLIC SPDLOG_NO_EXCEPTIONS)	
-
-	target_compile_definitions(spdlog_header_only INTERFACE SPDLOG_NO_EXCEPTIONS)
-
-    if(NOT MSVC)
-        target_compile_options(spdlog PRIVATE -fno-exceptions)
-    endif()
-endif()
-
-
-#---------------------------------------------------------------------------------------
+endforeach ()
+# ---------------------------------------------------------------------------------------
 # Build binaries
-#---------------------------------------------------------------------------------------
-if(SPDLOG_BUILD_EXAMPLE OR SPDLOG_BUILD_EXAMPLE_HO)
-    message(STATUS "Generating examples")
+# ---------------------------------------------------------------------------------------
+# examples
+if (SPDLOG_BUILD_EXAMPLE OR SPDLOG_BUILD_ALL)
+    message(STATUS "Generating example(s)")
     add_subdirectory(example)
-endif()
-
-if(SPDLOG_BUILD_TESTS OR SPDLOG_BUILD_TESTS_HO)
+    spdlog_enable_warnings(example)
+endif ()
+# tests
+if (SPDLOG_BUILD_TESTS OR SPDLOG_BUILD_ALL)
     message(STATUS "Generating tests")
     enable_testing()
     add_subdirectory(tests)
-endif()
-
-if(SPDLOG_BUILD_BENCH)
+endif ()
+# benchmarks
+if (SPDLOG_BUILD_BENCH OR SPDLOG_BUILD_ALL)
     message(STATUS "Generating benchmarks")
     add_subdirectory(bench)
-endif()
-
-#---------------------------------------------------------------------------------------
+endif ()
+# ---------------------------------------------------------------------------------------
 # Install
-#---------------------------------------------------------------------------------------
+# ---------------------------------------------------------------------------------------
 if (SPDLOG_INSTALL)
     message(STATUS "Generating install")
+    install(
+            TARGETS spdlog
+            EXPORT spdlogTargets
+            LIBRARY DESTINATION "${CMAKE_INSTALL_LIBDIR}/${SPDLOG_NAME}"
+            ARCHIVE DESTINATION "${CMAKE_INSTALL_LIBDIR}/${SPDLOG_NAME}"
+            RUNTIME DESTINATION "${CMAKE_INSTALL_BINDIR}/${SPDLOG_NAME}"
+            FILE_SET pub_headers
+            DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}/${SPDLOG_NAME}")
+    message(STATUS "Installing spdlog in ${CMAKE_INSTALL_LIBDIR}/${SPDLOG_NAME}")
+    # Install CMake spdlogConfig.cmake, spdlogConfigVersion.cmake and spdlogTargets.cmake
     set(project_config_in "${CMAKE_CURRENT_LIST_DIR}/cmake/spdlogConfig.cmake.in")
     set(project_config_out "${CMAKE_CURRENT_BINARY_DIR}/spdlogConfig.cmake")
     set(config_targets_file "spdlogConfigTargets.cmake")
     set(version_config_file "${CMAKE_CURRENT_BINARY_DIR}/spdlogConfigVersion.cmake")
-    set(export_dest_dir "${CMAKE_INSTALL_LIBDIR}/spdlog/cmake")
-    set(pkgconfig_install_dir "${CMAKE_INSTALL_LIBDIR}/pkgconfig")
-    set(pkg_config "${CMAKE_BINARY_DIR}/${PROJECT_NAME}.pc")
-
-    #---------------------------------------------------------------------------------------
-    # Include files
-    #---------------------------------------------------------------------------------------
-    install(DIRECTORY include/ DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}" PATTERN "fmt/bundled" EXCLUDE)
-    install(TARGETS spdlog spdlog_header_only EXPORT spdlog DESTINATION "${CMAKE_INSTALL_LIBDIR}")
-
-    if(NOT SPDLOG_FMT_EXTERNAL)
-        install(DIRECTORY include/${PROJECT_NAME}/fmt/bundled/
-                DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}/${PROJECT_NAME}/fmt/bundled/")
-    endif()
-
-    #---------------------------------------------------------------------------------------
-    # Install pkg-config file
-    #---------------------------------------------------------------------------------------
-    get_target_property(PKG_CONFIG_DEFINES spdlog INTERFACE_COMPILE_DEFINITIONS)
-    string(REPLACE ";" " -D" PKG_CONFIG_DEFINES "${PKG_CONFIG_DEFINES}")
-    string(CONCAT PKG_CONFIG_DEFINES "-D" "${PKG_CONFIG_DEFINES}")
-    configure_file("cmake/${PROJECT_NAME}.pc.in" "${pkg_config}" @ONLY)
-    install(FILES "${pkg_config}" DESTINATION "${pkgconfig_install_dir}")
-
-    #---------------------------------------------------------------------------------------
-    # Install CMake config files
-    #---------------------------------------------------------------------------------------
-    install(EXPORT spdlog
-            DESTINATION ${export_dest_dir}
-            NAMESPACE spdlog::
-            FILE ${config_targets_file})
-
+    set(export_dest_dir "${CMAKE_INSTALL_LIBDIR}/cmake/${SPDLOG_NAME}")
+    install(EXPORT spdlogTargets DESTINATION ${export_dest_dir} NAMESPACE spdlog:: FILE ${config_targets_file})
     include(CMakePackageConfigHelpers)
-    configure_file("${project_config_in}" "${project_config_out}" @ONLY)
-
+    configure_package_config_file("${project_config_in}" "${project_config_out}" INSTALL_DESTINATION ${export_dest_dir})
     write_basic_package_version_file("${version_config_file}" COMPATIBILITY SameMajorVersion)
-    install(FILES
-            "${project_config_out}"
-            "${version_config_file}" DESTINATION "${export_dest_dir}")
-
-    #---------------------------------------------------------------------------------------
-    # Support creation of installable packages
-    #---------------------------------------------------------------------------------------
+    install(FILES "${project_config_out}" "${version_config_file}" DESTINATION "${export_dest_dir}")
+    # CPack
     include(cmake/spdlogCPack.cmake)
-
 endif ()
-

INSTALL

@@ -1,19 +1,7 @@
-Header only version:
-==================================================================
-Just copy the files to your build tree and use a C++11 compiler.
-Or use CMake:
-  add_executable(example_header_only example.cpp)
-  target_link_libraries(example_header_only spdlog::spdlog_header_only)
-
-
-Compiled library version:
-==================================================================
 CMake:
   add_executable(example example.cpp)
   target_link_libraries(example spdlog::spdlog)
 
-Or copy src/spdlog.cpp to your build tree and pass the -DSPDLOG_COMPILED_LIB to the compiler.
-
 Tested on:
 gcc 4.8.1 and above
 clang 3.5

LICENSE

@@ -20,3 +20,7 @@ LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 THE SOFTWARE.
 
+-- NOTE: Third party dependency used by this software --
+This software depends on the fmt lib (MIT License),
+and users must comply to its license: https://raw.githubusercontent.com/fmtlib/fmt/master/LICENSE
+

README.md

@@ -1,60 +1,67 @@
 # spdlog
 
-Very fast, header-only/compiled, C++ logging library. [![Build Status](https://travis-ci.org/gabime/spdlog.svg?branch=master)](https://travis-ci.org/gabime/spdlog)  [![Build status](https://ci.appveyor.com/api/projects/status/d2jnxclg20vd0o50?svg=true)](https://ci.appveyor.com/project/gabime/spdlog)
 
+[![ci](https://github.com/gabime/spdlog/actions/workflows/linux.yml/badge.svg)](https://github.com/gabime/spdlog/actions/workflows/linux.yml) 
+[![ci](https://github.com/gabime/spdlog/actions/workflows/windows.yml/badge.svg)](https://github.com/gabime/spdlog/actions/workflows/windows.yml) 
+[![ci](https://github.com/gabime/spdlog/actions/workflows/macos.yml/badge.svg)](https://github.com/gabime/spdlog/actions/workflows/macos.yml) 
+[![Release](https://img.shields.io/github/release/gabime/spdlog.svg)](https://github.com/gabime/spdlog/releases/latest)
 
+Fast C++ logging library
 
-## Install 
-#### Header only version
-Copy the source [folder](https://github.com/gabime/spdlog/tree/v1.x/include/spdlog) to your build tree and use a C++11 compiler.
-
-#### Static lib version (recommended - much faster compile times)
+## Install
 ```console
 $ git clone https://github.com/gabime/spdlog.git
 $ cd spdlog && mkdir build && cd build
-$ cmake .. && make -j
+$ cmake .. && cmake --build .
 ```
-      
-   see example [CMakeLists.txt](https://github.com/gabime/spdlog/blob/v1.x/example/CMakeLists.txt) on how to use.
+
+see example [CMakeLists.txt](https://github.com/gabime/spdlog/blob/v2.x/example/CMakeLists.txt) on how to use.
 
 ## Platforms
- * Linux, FreeBSD, OpenBSD, Solaris, AIX
- * Windows (msvc 2013+, cygwin)
- * macOS (clang 3.5+)
- * Android
+* Linux, FreeBSD, OpenBSD, Solaris, AIX
+* Windows (msvc, cygwin)
+* macOS 
+* Android
 
 ## Package managers:
+* Debian: `sudo apt install libspdlog-dev`
 * Homebrew: `brew install spdlog`
-* FreeBSD:  `cd /usr/ports/devel/spdlog/ && make install clean`
-* Fedora: `yum install spdlog`
+* MacPorts: `sudo port install spdlog`
+* FreeBSD:  `pkg install spdlog`
+* Fedora: `dnf install spdlog`
 * Gentoo: `emerge dev-libs/spdlog`
-* Arch Linux: `yaourt -S spdlog-git`
+* Arch Linux: `pacman -S spdlog`
+* openSUSE: `sudo zypper in spdlog-devel`
 * vcpkg: `vcpkg install spdlog`
+* conan: `conan install --requires=spdlog/[*]`
+* conda: `conda install -c conda-forge spdlog`
+* build2: ```depends: spdlog ^1.8.2```
+
 
 ## Features
 * Very fast (see [benchmarks](#benchmarks) below).
-* Headers only, just copy and use. Or use as a compiled library.
-* Feature rich formatting, using the excellent [fmt](https://github.com/fmtlib/fmt) library.
-* **New!** [Backtrace](#backtrace-support) support - store debug or other messages in a ring buffer and display later on demand.
-* Fast asynchronous mode (optional)
+* Headers only or compiled
+* Feature-rich formatting, using the excellent [fmt](https://github.com/fmtlib/fmt) library.
+* Asynchronous mode (optional)
 * [Custom](https://github.com/gabime/spdlog/wiki/3.-Custom-formatting) formatting.
 * Multi/Single threaded loggers.
 * Various log targets:
-    * Rotating log files.
-    * Daily log files.
-    * Console logging (colors supported).
-    * syslog.
-    * Windows debugger (```OutputDebugString(..)```)
-    * Easily extendable with custom log targets  (just implement a single function in the [sink](include/spdlog/sinks/sink.h) interface).
-* Severity based filtering - threshold levels can be modified in runtime as well as in compile time.
+  * Rotating log files.
+  * Daily log files.
+  * Console logging (colors supported).
+  * syslog.
+  * Windows event log.
+  * Windows debugger (```OutputDebugString(..)```).
+  * Log to Qt widgets ([example](#log-to-qt-with-nice-colors)).
+  * Easily [extendable](https://github.com/gabime/spdlog/wiki/4.-Sinks#implementing-your-own-sink) with custom log targets.
+* Log filtering - log levels can be modified at runtime as well as compile time.
+* Support for loading log levels from argv or environment var.
 
- 
 ## Usage samples
 
 #### Basic usage
 ```c++
 #include "spdlog/spdlog.h"
-#include "spdlog/sinks/basic_file_sink.h"
 
 int main() 
 {
@@ -75,26 +82,25 @@ int main()
     
     // Compile time log levels
     // define SPDLOG_ACTIVE_LEVEL to desired level
-    SPDLOG_TRACE("Some trace message with param {}", {});
+    SPDLOG_TRACE("Some trace message with param {}", 42);
     SPDLOG_DEBUG("Some debug message");
-    
-    // Set the default logger to file logger
-    auto file_logger = spdlog::basic_logger_mt("basic_logger", "logs/basic.txt");
-    spdlog::set_default_logger(file_logger);            
 }
+
 ```
-#### create stdout/stderr logger object
+---
+#### Create stdout/stderr logger object
 ```c++
 #include "spdlog/spdlog.h"
 #include "spdlog/sinks/stdout_color_sinks.h"
 void stdout_example()
 {
-    // create color multi threaded logger
+    // create a color multi-threaded logger
     auto console = spdlog::stdout_color_mt("console");    
     auto err_logger = spdlog::stderr_color_mt("stderr");    
     spdlog::get("console")->info("loggers can be retrieved from a global registry using the spdlog::get(logger_name)");
 }
 ```
+
 ---
 #### Basic file logger
 ```c++
@@ -103,7 +109,7 @@ void basic_logfile_example()
 {
     try 
     {
-        auto my_logger = spdlog::basic_logger_mt("basic_logger", "logs/basic-log.txt");
+        auto logger = spdlog::basic_logger_mt("basic_logger", "logs/basic-log.txt");
     }
     catch (const spdlog::spdlog_ex &ex)
     {
@@ -117,8 +123,10 @@ void basic_logfile_example()
 #include "spdlog/sinks/rotating_file_sink.h"
 void rotating_example()
 {
-    // Create a file rotating logger with 5mb size max and 3 rotated files
-    auto rotating_logger = spdlog::rotating_logger_mt("some_logger_name", "logs/rotating.txt", 1048576 * 5, 3);
+    // Create a file rotating logger with 5 MB size max and 3 rotated files
+    auto max_size = 1048576 * 5;
+    auto max_files = 3;
+    auto logger = spdlog::rotating_logger_mt("some_logger_name", "logs/rotating.txt", max_size, max_files);
 }
 ```
 
@@ -129,38 +137,36 @@ void rotating_example()
 #include "spdlog/sinks/daily_file_sink.h"
 void daily_example()
 {
-    // Create a daily logger - a new file is created every day on 2:30am
-    auto daily_logger = spdlog::daily_logger_mt("daily_logger", "logs/daily.txt", 2, 30);
+    // Create a daily logger - a new file is created every day at 2:30 am
+    auto logger = spdlog::daily_logger_mt("daily_logger", "logs/daily.txt", 2, 30);
 }
 
 ```
 
----
-#### Backtrace support
-```c++
-// Loggers can store in a ring buffer all messages (including debug/trace) and display later on demand.
-// When needed, call dump_backtrace() to see them
-spdlog::enable_backtrace(32); // create ring buffer with capacity of 32  messages
-// or my_logger->enable_backtrace(32)..
-for(int i = 0; i < 100; i++)
-{
-  spdlog::debug("Backtrace message {}", i); // not logged yet..
-}
-// e.g. if some error happened:
-spdlog::dump_backtrace(); // log them now! show the last 32 messages
-
-// or my_logger->dump_backtrace(32)..
-```
 
 ---
 #### Periodic flush
 ```c++
 // periodically flush all *registered* loggers every 3 seconds:
-// warning: only use if all your loggers are thread safe!
+// warning: only use if all your loggers are thread-safe ("_mt" loggers)
 spdlog::flush_every(std::chrono::seconds(3));
 
 ```
 
+---
+#### Stopwatch
+```c++
+// Stopwatch support for spdlog
+#include "spdlog/stopwatch.h"
+void stopwatch_example()
+{
+    spdlog::stopwatch sw;    
+    spdlog::debug("Elapsed {}", sw);
+    spdlog::debug("Elapsed {:.3}", sw);       
+}
+
+```
+
 ---
 #### Log binary data in hex
 ```c++
@@ -170,7 +176,8 @@ spdlog::flush_every(std::chrono::seconds(3));
 // {:X} - print in uppercase.
 // {:s} - don't separate each byte with space.
 // {:p} - don't print the position on each line start.
-// {:n} - don't split the output to lines.
+// {:n} - don't split the output into lines.
+// {:a} - show ASCII if :n is not set.
 
 #include "spdlog/fmt/bin_to_hex.h"
 
@@ -189,11 +196,11 @@ void binary_example()
 ```
 
 ---
-#### Logger with multi sinks - each with different format and log level
+#### Logger with multi sinks - each with a different format and log level
 ```c++
 
-// create logger with 2 targets with different log levels and formats.
-// the console will show only warnings or errors, while the file will log all.
+// create a logger with 2 targets, with different log levels and formats.
+// The console will show only warnings or errors, while the file will log all.
 void multi_sink_example()
 {
     auto console_sink = std::make_shared<spdlog::sinks::stdout_color_sink_mt>();
@@ -210,6 +217,27 @@ void multi_sink_example()
 }
 ```
 
+---
+#### User-defined callbacks about log events
+```c++
+
+// create a logger with a lambda function callback, the callback will be called
+// each time something is logged to the logger
+void callback_example()
+{
+    auto callback_sink = std::make_shared<spdlog::sinks::callback_sink_mt>([](const spdlog::details::log_msg &msg) {
+         // for example you can be notified by sending an email to yourself
+    });
+    callback_sink->set_level(spdlog::level::err);
+
+    auto console_sink = std::make_shared<spdlog::sinks::stdout_color_sink_mt>();
+    spdlog::logger logger("custom_callback_logger", {console_sink, callback_sink});
+
+    logger.info("some info log");
+    logger.error("critical issue"); // will notify you
+}
+```
+
 ---
 #### Asynchronous logging
 ```c++
@@ -217,53 +245,60 @@ void multi_sink_example()
 #include "spdlog/sinks/basic_file_sink.h"
 void async_example()
 {
-    // default thread pool settings can be modified *before* creating the async logger:
-    // spdlog::init_thread_pool(8192, 1); // queue with 8k items and 1 backing thread.
-    auto async_file = spdlog::basic_logger_mt<spdlog::async_factory>("async_file_logger", "logs/async_log.txt");
-    // alternatively:
-    // auto async_file = spdlog::create_async<spdlog::sinks::basic_file_sink_mt>("async_file_logger", "logs/async_log.txt");   
+    // TODO       
 }
 
 ```
 
 ---
-#### Asynchronous logger with multi sinks  
+#### User-defined types
 ```c++
-#include "spdlog/sinks/stdout_color_sinks.h"
-#include "spdlog/sinks/rotating_file_sink.h"
-
-void multi_sink_example2()
+template<>
+struct fmt::formatter<my_type> : fmt::formatter<std::string>
 {
-    spdlog::init_thread_pool(8192, 1);
-    auto stdout_sink = std::make_shared<spdlog::sinks::stdout_color_sink_mt >();
-    auto rotating_sink = std::make_shared<spdlog::sinks::rotating_file_sink_mt>("mylog.txt", 1024*1024*10, 3);
-    std::vector<spdlog::sink_ptr> sinks {stdout_sink, rotating_sink};
-    auto logger = std::make_shared<spdlog::async_logger>("loggername", sinks.begin(), sinks.end(), spdlog::thread_pool(), spdlog::async_overflow_policy::block);
-    spdlog::register_logger(logger);
-}
-```
- 
----
-#### User defined types
-```c++
-// user defined types logging by implementing operator<<
-#include "spdlog/fmt/ostr.h" // must be included
-struct my_type
-{
-    int i;
-    template<typename OStream>
-    friend OStream &operator<<(OStream &os, const my_type &c)
+    auto format(my_type my, format_context &ctx) const -> decltype(ctx.out())
     {
-        return os << "[my_type i=" << c.i << "]";
+        return format_to(ctx.out(), "[my_type i={}]", my.i);
     }
 };
 
 void user_defined_example()
 {
-    spdlog::get("console")->info("user defined type: {}", my_type{14});
+    spdlog::info("user defined type: {}", my_type(14));
 }
 
 ```
+
+---
+#### User-defined flags in the log pattern
+```c++ 
+// Log patterns can contain custom flags.
+// the following example will add new flag '%*' - which will be bound to a <my_formatter_flag> instance.
+#include "spdlog/pattern_formatter.h"
+class my_formatter_flag : public spdlog::custom_flag_formatter
+{
+public:
+    void format(const spdlog::details::log_msg &, const std::tm &, spdlog::memory_buf_t &dest) override
+    {
+        std::string some_txt = "custom-flag";
+        dest.append(some_txt.data(), some_txt.data() + some_txt.size());
+    }
+
+    std::unique_ptr<custom_flag_formatter> clone() const override
+    {
+        return std::make_unique<my_formatter_flag>();
+    }
+};
+
+void custom_flags_example()
+{    
+    auto formatter = std::make_unique<spdlog::pattern_formatter>();
+    formatter->add_flag<my_formatter_flag>('*').set_pattern("[%n] [%*] [%^%l%$] %v");
+    spdlog::set_formatter(std::move(formatter));
+}
+
+```
+
 ---
 #### Custom error handler
 ```c++
@@ -275,8 +310,9 @@ void err_handler_example()
 }
 
 ```
+
 ---
-#### syslog 
+#### syslog
 ```c++
 #include "spdlog/sinks/syslog_sink.h"
 void syslog_example()
@@ -287,7 +323,7 @@ void syslog_example()
 }
 ```
 ---
-#### Android example 
+#### Android example
 ```c++
 #include "spdlog/sinks/android_sink.h"
 void android_example()
@@ -298,9 +334,76 @@ void android_example()
 }
 ```
 
+---
+#### Load log levels from the env variable or argv
+
+```c++
+#include "spdlog/cfg/env.h"
+int main (int argc, char *argv[])
+{
+    spdlog::cfg::load_env_levels();
+    // or from the command line:
+    // ./example SPDLOG_LEVEL=info,mylogger=trace
+    // #include "spdlog/cfg/argv.h" // for loading levels from argv
+    // spdlog::cfg::load_argv_levels(argc, argv);
+}
+```
+So then you can:
+
+```console
+$ export SPDLOG_LEVEL=info,mylogger=trace
+$ ./example
+```
+
+
+---
+#### Log file open/close event handlers
+```c++
+// You can get callbacks from spdlog before/after a log file has been opened or closed. 
+// This is useful for cleanup procedures or for adding something to the start/end of the log file.
+void file_events_example()
+{
+    // pass the spdlog::file_event_handlers to file sinks for open/close log file notifications
+    spdlog::file_event_handlers handlers;
+    handlers.before_open = [](spdlog::filename_t filename) { spdlog::info("Before opening {}", filename); };
+    handlers.after_open = [](spdlog::filename_t filename, std::FILE *fstream) { fputs("After opening\n", fstream); };
+    handlers.before_close = [](spdlog::filename_t filename, std::FILE *fstream) { fputs("Before closing\n", fstream); };
+    handlers.after_close = [](spdlog::filename_t filename) { spdlog::info("After closing {}", filename); };
+    auto my_logger = spdlog::basic_logger_st("some_logger", "logs/events-sample.txt", true, handlers);        
+}
+```
+
+---
+#### Replace the Default Logger
+```c++
+void replace_global_logger_example()
+{
+    auto new_logger = spdlog::basic_logger_mt("new_global_logger", "logs/new-default-log.txt", true);
+    spdlog::set_global_logger(new_logger);
+    spdlog::info("new logger log message");
+}
+```
+
+---
+#### Log to Qt with nice colors
+```c++
+#include "spdlog/spdlog.h"
+#include "spdlog/sinks/qt_sinks.h"
+MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent)
+{
+    setMinimumSize(640, 480);
+    auto log_widget = new QTextEdit(this);
+    setCentralWidget(log_widget);
+    int max_lines = 500; // keep the text widget to max 500 lines. remove old lines if needed.
+    auto logger = spdlog::qt_color_logger_mt("qt_logger", log_widget, max_lines);
+    logger->info("Some info message");
+}
+```
+
+---
 ## Benchmarks
 
-Below are some [benchmarks](https://github.com/gabime/spdlog/blob/v1.x/bench/bench.cpp) done in Ubuntu 64 bit, Intel i7-4770 CPU @ 3.40GHz
+Below are some [benchmarks](https://github.com/gabime/spdlog/blob/v2.x/bench/bench.cpp) done in Ubuntu 64 bit, Intel i7-4770 CPU @ 3.40GHz
 
 #### Synchronous mode
 ```
@@ -319,21 +422,20 @@ Below are some [benchmarks](https://github.com/gabime/spdlog/blob/v1.x/bench/ben
 [info] daily_st         Elapsed: 0.42 secs        2,393,298/sec
 [info] null_st          Elapsed: 0.04 secs       27,446,957/sec
 [info] **************************************************************
-[info] 10 threads sharing same logger, 1,000,000 iterations
+[info] 10 threads, competing over the same logger object, 1,000,000 iterations
 [info] **************************************************************
 [info] basic_mt         Elapsed: 0.60 secs        1,659,613/sec
 [info] rotating_mt      Elapsed: 0.62 secs        1,612,493/sec
 [info] daily_mt         Elapsed: 0.61 secs        1,638,305/sec
 [info] null_mt          Elapsed: 0.16 secs        6,272,758/sec
 ```
-#### ASynchronous mode
+#### Asynchronous mode
 ```
 [info] -------------------------------------------------
 [info] Messages     : 1,000,000
 [info] Threads      : 10
 [info] Queue        : 8,192 slots
 [info] Queue memory : 8,192 x 272 = 2,176 KB 
-[info] Total iters  : 3
 [info] -------------------------------------------------
 [info] 
 [info] *********************************
@@ -354,3 +456,7 @@ Below are some [benchmarks](https://github.com/gabime/spdlog/blob/v1.x/bench/ben
 
 ## Documentation
 Documentation can be found in the [wiki](https://github.com/gabime/spdlog/wiki/1.-QuickStart) pages.
+
+---
+
+Thanks to [JetBrains](https://www.jetbrains.com/?from=spdlog) for donating product licenses to help develop **spdlog** <a href="https://www.jetbrains.com/?from=spdlog"><img src="logos/jetbrains-variant-4.svg" width="94" align="center" /></a>

appveyor.yml

@@ -1,34 +0,0 @@
-version: 1.0.{build}
-image: Visual Studio 2015
-environment:
-  matrix:
-  - GENERATOR: '"MinGW Makefiles"'
-    BUILD_TYPE: Debug
-  - GENERATOR: '"MinGW Makefiles"'
-    BUILD_TYPE: Release
-  - GENERATOR: '"Visual Studio 14 2015"'
-    BUILD_TYPE: Debug
-  - GENERATOR: '"Visual Studio 14 2015"'
-    BUILD_TYPE: Release
-  - GENERATOR: '"Visual Studio 14 2015 Win64"'
-    BUILD_TYPE: Debug
-  - GENERATOR: '"Visual Studio 14 2015 Win64"'
-    BUILD_TYPE: Release
-build_script:
-- cmd: >-
-    set
-
-    mkdir build
-
-    cd build
-
-    set PATH=%PATH:C:\Program Files\Git\usr\bin;=%
-
-    set PATH=C:\mingw-w64\i686-5.3.0-posix-dwarf-rt_v4-rev0\mingw32\bin;%PATH%
-
-    cmake .. -G %GENERATOR% -DCMAKE_BUILD_TYPE=%BUILD_TYPE% -DSPDLOG_WCHAR_SUPPORT=ON -DSPDLOG_BUILD_EXAMPLE=ON -DSPDLOG_BUILD_EXAMPLE_HO=ON -DSPDLOG_BUILD_TESTS=ON -DSPDLOG_BUILD_TESTS_HO=OFF
-
-    cmake --build . --config %BUILD_TYPE%
-
-test_script:
-- ctest -VV -C "%BUILD_TYPE%"

bench/CMakeLists.txt

@@ -1,16 +1,29 @@
-# Copyright(c) 2019 spdlog authors
-# Distributed under the MIT License (http://opensource.org/licenses/MIT)
+# Copyright(c) 2019 spdlog authors Distributed under the MIT License (http://opensource.org/licenses/MIT)
 
-cmake_minimum_required(VERSION 3.1)
+cmake_minimum_required(VERSION 3.14)
 project(spdlog_bench CXX)
 
 if(NOT TARGET spdlog)
-  # Stand-alone build
-  find_package(spdlog CONFIG REQUIRED)
+    # Stand-alone build
+    find_package(spdlog CONFIG REQUIRED)
 endif()
 
 find_package(Threads REQUIRED)
-find_package(benchmark CONFIG REQUIRED)
+find_package(benchmark CONFIG)
+
+if(NOT benchmark_FOUND)
+    message(STATUS "Using CMake Version ${CMAKE_VERSION}")
+    # User can fetch googlebenchmark
+    message(STATUS "Downloading GoogleBenchmark")
+    include(FetchContent)
+
+    # disable tests
+    set(BENCHMARK_ENABLE_TESTING OFF CACHE INTERNAL "")
+    # Do not build and run googlebenchmark tests
+    FetchContent_Declare(googlebenchmark GIT_REPOSITORY https://github.com/google/benchmark.git GIT_TAG v1.6.0)
+    FetchContent_MakeAvailable(googlebenchmark)
+    set_target_properties(benchmark PROPERTIES FOLDER "third-party")
+endif()
 
 add_executable(bench bench.cpp)
 spdlog_enable_warnings(bench)
@@ -24,5 +37,3 @@ target_link_libraries(latency PRIVATE benchmark::benchmark spdlog::spdlog)
 
 add_executable(formatter-bench formatter-bench.cpp)
 target_link_libraries(formatter-bench PRIVATE benchmark::benchmark spdlog::spdlog)
-
-file(MAKE_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}/logs")

bench/async_bench.cpp

@@ -6,103 +6,88 @@
 //
 // bench.cpp : spdlog benchmarks
 //
-#include "spdlog/spdlog.h"
-#include "spdlog/async.h"
-#include "spdlog/sinks/basic_file_sink.h"
-#include "spdlog/sinks/stdout_color_sinks.h"
-
-#include "utils.h"
+#include <algorithm>
 #include <atomic>
+#include <fstream>
 #include <iostream>
+#include <locale>
 #include <memory>
 #include <string>
 #include <thread>
 
+#include "spdlog/sinks/async_sink.h"
+#include "spdlog/sinks/basic_file_sink.h"
+#include "spdlog/spdlog.h"
+
 using namespace std;
 using namespace std::chrono;
-using namespace spdlog;
-using namespace spdlog::sinks;
-using namespace utils;
+using spdlog::sinks::async_sink;
 
 void bench_mt(int howmany, std::shared_ptr<spdlog::logger> log, int thread_count);
 
-#ifdef _MSC_VER
-#pragma warning(push)
-#pragma warning(disable : 4996) // disable fopen warning under msvc
-#endif                          // _MSC_VER
-
-int count_lines(const char *filename)
-{
-    int counter = 0;
-    auto *infile = fopen(filename, "r");
-    int ch;
-    while (EOF != (ch = getc(infile)))
-    {
-        if ('\n' == ch)
-            counter++;
-    }
-    fclose(infile);
-
-    return counter;
+int count_lines(const char *filename) {
+    std::ifstream ifs(filename);
+    return std::count(std::istreambuf_iterator(ifs), std::istreambuf_iterator<char>(), '\n');
 }
 
-void verify_file(const char *filename, int expected_count)
-{
-    spdlog::info("Verifying {} to contain {:n} line..", filename, expected_count);
+void verify_file(const char *filename, int expected_count) {
+    spdlog::info("Verifying {} to contain {} line..", filename, expected_count);
     auto count = count_lines(filename);
-    if (count != expected_count)
-    {
-        spdlog::error("Test failed. {} has {:n} lines instead of {:n}", filename, count, expected_count);
+    if (count != expected_count) {
+        spdlog::error("Test failed. {} has {} lines instead of {}", filename, count, expected_count);
         exit(1);
     }
-    spdlog::info("Line count OK ({:n})\n", count);
+    spdlog::info("Line count OK ({})\n", count);
 }
 
 #ifdef _MSC_VER
-#pragma warning(pop)
+    #pragma warning(pop)
 #endif
 
-int main(int argc, char *argv[])
-{
+using namespace spdlog::sinks;
 
-    int howmany = 1000000;
-    int queue_size = std::min(howmany + 2, 8192);
+int main(int argc, char *argv[]) {
+    // setlocale to show thousands separators
+    std::locale::global(std::locale("en_US.UTF-8"));
+    int howmany = 1'000'000;
+    int queue_size = async_sink::default_queue_size;
     int threads = 10;
     int iters = 3;
 
-    try
-    {
+    try {
         spdlog::set_pattern("[%^%l%$] %v");
-        if (argc == 1)
-        {
+        if (argc > 1 && (std::string(argv[1]) == "-h" || std::string(argv[1]) == "--help")) {
             spdlog::info("Usage: {} <message_count> <threads> <q_size> <iterations>", argv[0]);
             return 0;
         }
 
-        if (argc > 1)
-            howmany = atoi(argv[1]);
-        if (argc > 2)
-            threads = atoi(argv[2]);
-        if (argc > 3)
-        {
+        if (argc > 1) howmany = atoi(argv[1]);
+        if (argc > 2) threads = atoi(argv[2]);
+        if (argc > 3) {
             queue_size = atoi(argv[3]);
-            if (queue_size > 500000)
-            {
-                spdlog::error("Max queue size allowed: 500,000");
-                exit(1);
-            }
         }
 
-        if (argc > 4)
-            iters = atoi(argv[4]);
+        if (argc > 4) iters = atoi(argv[4]);
+        // validate all argc values
+        if (howmany < 1 || threads < 1 || queue_size < 1 ||  iters < 1) {
+            spdlog::error("Invalid input values");
+            exit(1);
+        }
 
-        auto slot_size = sizeof(spdlog::details::async_msg);
+        constexpr int max_q_size = async_sink::max_queue_size;
+        if(queue_size > max_q_size)
+        {
+            spdlog::error("Queue size too large. Max queue size is {:L}", max_q_size);
+            exit(1);
+        }
+
+        auto slot_size = sizeof(spdlog::details::async_log_msg);
         spdlog::info("-------------------------------------------------");
-        spdlog::info("Messages     : {:n}", howmany);
-        spdlog::info("Threads      : {:n}", threads);
-        spdlog::info("Queue        : {:n} slots", queue_size);
-        spdlog::info("Queue memory : {:n} x {} = {:n} KB ", queue_size, slot_size, (queue_size * slot_size) / 1024);
-        spdlog::info("Total iters  : {:n}", iters);
+        spdlog::info("Messages     : {:L}", howmany);
+        spdlog::info("Threads      : {:L}", threads);
+        spdlog::info("Queue        : {:L} slots", queue_size);
+        spdlog::info("Queue memory : {:L} x {:L} = {:L} KB ", queue_size, slot_size, (queue_size * slot_size) / 1024);
+        spdlog::info("Total iters  : {:L}", iters);
         spdlog::info("-------------------------------------------------");
 
         const char *filename = "logs/basic_async.log";
@@ -110,33 +95,36 @@ int main(int argc, char *argv[])
         spdlog::info("*********************************");
         spdlog::info("Queue Overflow Policy: block");
         spdlog::info("*********************************");
-        for (int i = 0; i < iters; i++)
-        {
-            auto tp = std::make_shared<details::thread_pool>(queue_size, 1);
-            auto file_sink = std::make_shared<spdlog::sinks::basic_file_sink_mt>(filename, true);
-            auto logger = std::make_shared<async_logger>("async_logger", std::move(file_sink), std::move(tp), async_overflow_policy::block);
-            bench_mt(howmany, std::move(logger), threads);
-            // verify_file(filename, howmany);
+        for (int i = 0; i < iters; i++) {
+            {
+                auto file_sink = std::make_shared<basic_file_sink_mt>(filename, true);
+                auto cfg = async_sink::config();
+                cfg.queue_size = queue_size;
+                cfg.sinks.push_back(std::move(file_sink));
+                auto sink = std::make_shared<async_sink>(cfg);
+                auto logger = std::make_shared<spdlog::logger>("async_logger", std::move(sink));
+                bench_mt(howmany, std::move(logger), threads);
+            }
+            // verify_file(filename, howmany); // in separate scope to ensure logger is destroyed and all logs were written
         }
-
         spdlog::info("");
         spdlog::info("*********************************");
         spdlog::info("Queue Overflow Policy: overrun");
         spdlog::info("*********************************");
-        // do same test but discard oldest if queue is full instead of blocking
+        // do same test but discard the oldest if queue is full instead of blocking
         filename = "logs/basic_async-overrun.log";
-        for (int i = 0; i < iters; i++)
-        {
-            auto tp = std::make_shared<details::thread_pool>(queue_size, 1);
-            auto file_sink = std::make_shared<spdlog::sinks::basic_file_sink_mt>(filename, true);
-            auto logger =
-                std::make_shared<async_logger>("async_logger", std::move(file_sink), std::move(tp), async_overflow_policy::overrun_oldest);
+        for (int i = 0; i < iters; i++) {
+            async_sink::config cfg;
+            cfg.policy = async_sink::overflow_policy::overrun_oldest;
+            cfg.queue_size = queue_size;
+            auto file_sink = std::make_shared<basic_file_sink_mt>(filename, true);
+            cfg.sinks.push_back(std::move(file_sink));
+            auto sink = std::make_shared<async_sink>(cfg);
+            auto logger = std::make_shared<spdlog::logger>("async_logger", std::move(sink));
             bench_mt(howmany, std::move(logger), threads);
         }
         spdlog::shutdown();
-    }
-    catch (std::exception &ex)
-    {
+    } catch (std::exception &ex) {
         std::cerr << "Error: " << ex.what() << std::endl;
         perror("Last error");
         return 1;
@@ -144,36 +132,31 @@ int main(int argc, char *argv[])
     return 0;
 }
 
-void thread_fun(std::shared_ptr<spdlog::logger> logger, int howmany)
-{
-    for (int i = 0; i < howmany; i++)
-    {
+void thread_fun(std::shared_ptr<spdlog::logger> logger, int howmany) {
+    for (int i = 0; i < howmany; i++) {
         logger->info("Hello logger: msg number {}", i);
     }
 }
 
-void bench_mt(int howmany, std::shared_ptr<spdlog::logger> logger, int thread_count)
-{
+void bench_mt(int howmany, std::shared_ptr<spdlog::logger> logger, int thread_count) {
     using std::chrono::high_resolution_clock;
-    vector<thread> threads;
+    vector<std::thread> threads;
     auto start = high_resolution_clock::now();
 
     int msgs_per_thread = howmany / thread_count;
     int msgs_per_thread_mod = howmany % thread_count;
-    for (int t = 0; t < thread_count; ++t)
-    {
+    for (int t = 0; t < thread_count; ++t) {
         if (t == 0 && msgs_per_thread_mod)
             threads.push_back(std::thread(thread_fun, logger, msgs_per_thread + msgs_per_thread_mod));
         else
             threads.push_back(std::thread(thread_fun, logger, msgs_per_thread));
     }
 
-    for (auto &t : threads)
-    {
+    for (auto &t : threads) {
         t.join();
-    };
+    }
 
     auto delta = high_resolution_clock::now() - start;
     auto delta_d = duration_cast<duration<double>>(delta).count();
-    spdlog::info("Elapsed: {} secs\t {:n}/sec", delta_d, int(howmany / delta_d));
+    spdlog::info("Elapsed: {} secs\t {:L}/sec", delta_d, static_cast<int>(howmany / delta_d));
 }

bench/bench.cpp

@@ -6,179 +6,155 @@
 //
 // bench.cpp : spdlog benchmarks
 //
-#include "spdlog/spdlog.h"
-#include "spdlog/sinks/basic_file_sink.h"
-#include "spdlog/sinks/daily_file_sink.h"
-#include "spdlog/sinks/null_sink.h"
-#include "spdlog/sinks/rotating_file_sink.h"
+#include <fmt/format.h>
 
-#include "utils.h"
 #include <atomic>
-#include <cstdlib> // EXIT_FAILURE
+#include <cstdlib>  // EXIT_FAILURE
 #include <memory>
 #include <string>
 #include <thread>
 
-using namespace std;
-using namespace std::chrono;
-using namespace spdlog;
-using namespace spdlog::sinks;
-using namespace utils;
+#include "spdlog/sinks/basic_file_sink.h"
+#include "spdlog/sinks/daily_file_sink.h"
+#include "spdlog/sinks/null_sink.h"
+#include "spdlog/sinks/rotating_file_sink.h"
+#include "spdlog/spdlog.h"
+#include "utils.h"
 
 void bench(int howmany, std::shared_ptr<spdlog::logger> log);
-void bench_mt(int howmany, std::shared_ptr<spdlog::logger> log, int thread_count);
-void bench_default_api(int howmany, std::shared_ptr<spdlog::logger> log);
-void bench_c_string(int howmany, std::shared_ptr<spdlog::logger> log);
+void bench_mt(int howmany, std::shared_ptr<spdlog::logger> log, size_t thread_count);
 
-static size_t file_size = 30 * 1024 * 1024;
-static size_t rotating_files = 5;
+// void bench_default_api(int howmany, std::shared_ptr<spdlog::logger> log);
+// void bench_c_string(int howmany, std::shared_ptr<spdlog::logger> log);
 
-void bench_threaded_logging(int threads, int iters)
-{
+static const size_t file_size = 30 * 1024 * 1024;
+static const size_t rotating_files = 5;
+static const int max_threads = 1000;
+
+using namespace spdlog::sinks;
+void bench_threaded_logging(size_t threads, int iters) {
     spdlog::info("**************************************************************");
-    spdlog::info("Multi threaded: {:n} threads, {:n} messages", threads, iters);
+    spdlog::info(
+        spdlog::fmt_lib::format(std::locale("en_US.UTF-8"), "Multi threaded: {:L} threads, {:L} messages", threads, iters));
     spdlog::info("**************************************************************");
 
-    auto basic_mt = spdlog::basic_logger_mt("basic_mt", "logs/basic_mt.log", true);
+    auto basic_mt = spdlog::create<basic_file_sink_mt>("basic_mt", "logs/basic_mt.log", true);
     bench_mt(iters, std::move(basic_mt), threads);
-    auto basic_mt_tracing = spdlog::basic_logger_mt("basic_mt/backtrace-on", "logs/basic_mt.log", true);
-    basic_mt_tracing->enable_backtrace(32);
-    bench_mt(iters, std::move(basic_mt_tracing), threads);
 
     spdlog::info("");
-    auto rotating_mt = spdlog::rotating_logger_mt("rotating_mt", "logs/rotating_mt.log", file_size, rotating_files);
+    auto rotating_mt = spdlog::create<rotating_file_sink_mt>("rotating_mt", "logs/rotating_mt.log", file_size, rotating_files);
     bench_mt(iters, std::move(rotating_mt), threads);
-    auto rotating_mt_tracing = spdlog::rotating_logger_mt("rotating_mt/backtrace-on", "logs/rotating_mt.log", file_size, rotating_files);
-    rotating_mt_tracing->enable_backtrace(32);
-    bench_mt(iters, std::move(rotating_mt_tracing), threads);
 
     spdlog::info("");
-    auto daily_mt = spdlog::daily_logger_mt("daily_mt", "logs/daily_mt.log");
+    auto daily_mt = spdlog::create<daily_file_sink_mt>("daily_mt", "logs/daily_mt.log", 0, 1);
     bench_mt(iters, std::move(daily_mt), threads);
-    auto daily_mt_tracing = spdlog::daily_logger_mt("daily_mt/backtrace-on", "logs/daily_mt.log");
-    daily_mt_tracing->enable_backtrace(32);
-    bench_mt(iters, std::move(daily_mt_tracing), threads);
 
     spdlog::info("");
     auto empty_logger = std::make_shared<spdlog::logger>("level-off");
     empty_logger->set_level(spdlog::level::off);
     bench(iters, empty_logger);
-    auto empty_logger_tracing = std::make_shared<spdlog::logger>("level-off/backtrace-on");
-    empty_logger_tracing->set_level(spdlog::level::off);
-    empty_logger_tracing->enable_backtrace(32);
-    bench(iters, empty_logger_tracing);
 }
 
-void bench_single_threaded(int iters)
-{
+void bench_single_threaded(int iters) {
     spdlog::info("**************************************************************");
-    spdlog::info("Single threaded: {:n} messages", iters);
+    spdlog::info(spdlog::fmt_lib::format(std::locale("en_US.UTF-8"), "Single threaded: {} messages", iters));
     spdlog::info("**************************************************************");
 
-    auto basic_st = spdlog::basic_logger_st("basic_st", "logs/basic_st.log", true);
+    auto basic_st = spdlog::create<basic_file_sink_st>("basic_st", "logs/basic_st.log", true);
     bench(iters, std::move(basic_st));
 
-    auto basic_st_tracing = spdlog::basic_logger_st("basic_st/backtrace-on", "logs/basic_st.log", true);
-    bench(iters, std::move(basic_st_tracing));
-
     spdlog::info("");
-    auto rotating_st = spdlog::rotating_logger_st("rotating_st", "logs/rotating_st.log", file_size, rotating_files);
+    auto rotating_st = spdlog::create<rotating_file_sink_st>("rotating_st", "logs/rotating_st.log", file_size, rotating_files);
     bench(iters, std::move(rotating_st));
-    auto rotating_st_tracing = spdlog::rotating_logger_st("rotating_st/backtrace-on", "logs/rotating_st.log", file_size, rotating_files);
-    rotating_st_tracing->enable_backtrace(32);
-    bench(iters, std::move(rotating_st_tracing));
 
     spdlog::info("");
-    auto daily_st = spdlog::daily_logger_st("daily_st", "logs/daily_st.log");
+    auto daily_st = spdlog::create<daily_file_sink_st>("daily_st", "logs/daily_st.log", 0, 1);
     bench(iters, std::move(daily_st));
-    auto daily_st_tracing = spdlog::daily_logger_st("daily_st/backtrace-on", "logs/daily_st.log");
-    daily_st_tracing->enable_backtrace(32);
-    bench(iters, std::move(daily_st_tracing));
 
     spdlog::info("");
     auto empty_logger = std::make_shared<spdlog::logger>("level-off");
     empty_logger->set_level(spdlog::level::off);
     bench(iters, empty_logger);
-
-    auto empty_logger_tracing = std::make_shared<spdlog::logger>("level-off/backtrace-on");
-    empty_logger_tracing->set_level(spdlog::level::off);
-    empty_logger_tracing->enable_backtrace(32);
-    bench(iters, empty_logger_tracing);
 }
 
-int main(int argc, char *argv[])
-{
-    spdlog::set_automatic_registration(false);
-    spdlog::default_logger()->set_pattern("[%^%l%$] %v");
+int main(int argc, char *argv[]) {
+    spdlog::global_logger()->set_pattern("[%^%l%$] %v");
     int iters = 250000;
-    int threads = 4;
-    try
-    {
+    size_t threads = 4;
+    try {
+        if (argc > 1) {
+            iters = std::stoi(argv[1]);
+        }
+        if (argc > 2) {
+            threads = std::stoul(argv[2]);
+        }
 
-        if (argc > 1)
-            iters = atoi(argv[1]);
-        if (argc > 2)
-            threads = atoi(argv[2]);
+        if (threads > max_threads) {
+            throw std::runtime_error(spdlog::fmt_lib::format("Number of threads exceeds maximum({})", max_threads));
+        }
 
         bench_single_threaded(iters);
         bench_threaded_logging(1, iters);
         bench_threaded_logging(threads, iters);
-    }
-    catch (std::exception &ex)
-    {
+    } catch (std::exception &ex) {
         spdlog::error(ex.what());
         return EXIT_FAILURE;
     }
     return EXIT_SUCCESS;
 }
 
-void bench(int howmany, std::shared_ptr<spdlog::logger> log)
-{
+void bench(int howmany, std::shared_ptr<spdlog::logger> log) {
+    using std::chrono::duration;
+    using std::chrono::duration_cast;
     using std::chrono::high_resolution_clock;
+
     auto start = high_resolution_clock::now();
-    for (auto i = 0; i < howmany; ++i)
-    {
+    for (auto i = 0; i < howmany; ++i) {
         log->info("Hello logger: msg number {}", i);
     }
 
     auto delta = high_resolution_clock::now() - start;
     auto delta_d = duration_cast<duration<double>>(delta).count();
 
-    spdlog::info("{:<30} Elapsed: {:0.2f} secs {:>16n}/sec", log->name(), delta_d, int(howmany / delta_d));
-    spdlog::drop(log->name());
+    spdlog::info(spdlog::fmt_lib::format(std::locale("en_US.UTF-8"), "{:<30} Elapsed: {:0.2f} secs {:>16L}/sec", log->name(),
+                                         delta_d, static_cast<size_t>(howmany / delta_d)));
 }
 
-void bench_mt(int howmany, std::shared_ptr<spdlog::logger> log, int thread_count)
-{
+void bench_mt(int howmany, std::shared_ptr<spdlog::logger> log, size_t thread_count) {
+    using std::chrono::duration;
+    using std::chrono::duration_cast;
     using std::chrono::high_resolution_clock;
-    vector<thread> threads;
+
+    std::vector<std::thread> threads;
+    threads.reserve(thread_count);
     auto start = high_resolution_clock::now();
-    for (int t = 0; t < thread_count; ++t)
-    {
-        threads.push_back(std::thread([&]() {
-            for (int j = 0; j < howmany / thread_count; j++)
-            {
+    for (size_t t = 0; t < thread_count; ++t) {
+        threads.emplace_back([&]() {
+            for (int j = 0; j < howmany / static_cast<int>(thread_count); j++) {
                 log->info("Hello logger: msg number {}", j);
             }
-        }));
+        });
     }
 
-    for (auto &t : threads)
-    {
+    for (auto &t : threads) {
         t.join();
-    };
+    }
 
     auto delta = high_resolution_clock::now() - start;
     auto delta_d = duration_cast<duration<double>>(delta).count();
-    spdlog::info("{:<30} Elapsed: {:0.2f} secs {:>16n}/sec", log->name(), delta_d, int(howmany / delta_d));
-    spdlog::drop(log->name());
+    spdlog::info(spdlog::fmt_lib::format(std::locale("en_US.UTF-8"), "{:<30} Elapsed: {:0.2f} secs {:>16L}/sec", log->name(),
+                                         delta_d, static_cast<size_t>(howmany / delta_d)));
 }
 
+/*
 void bench_default_api(int howmany, std::shared_ptr<spdlog::logger> log)
 {
     using std::chrono::high_resolution_clock;
-    auto orig_default = spdlog::default_logger();
-    spdlog::set_default_logger(log);
+    using std::chrono::duration;
+    using std::chrono::duration_cast;
+
+    auto orig_default = spdlog::global_logger();
+    spdlog::set_global_logger(log);
     auto start = high_resolution_clock::now();
     for (auto i = 0; i < howmany; ++i)
     {
@@ -188,29 +164,38 @@ void bench_default_api(int howmany, std::shared_ptr<spdlog::logger> log)
     auto delta = high_resolution_clock::now() - start;
     auto delta_d = duration_cast<duration<double>>(delta).count();
     spdlog::drop(log->name());
-    spdlog::set_default_logger(std::move(orig_default));
-    spdlog::info("{:<30} Elapsed: {:0.2f} secs {:>16n}/sec", log->name(), delta_d, int(howmany / delta_d));
+    spdlog::set_global_logger(std::move(orig_default));
+    spdlog::info("{:<30} Elapsed: {:0.2f} secs {:>16}/sec", log->name(), delta_d, int(howmany /
+delta_d));
 }
 
 void bench_c_string(int howmany, std::shared_ptr<spdlog::logger> log)
 {
-    const char *msg = "Lorem ipsum dolor sit amet, consectetur adipiscing elit. Vestibulum pharetra metus cursus "
-                      "lacus placerat congue. Nulla egestas, mauris a tincidunt tempus, enim lectus volutpat mi, eu consequat sem "
-                      "libero nec massa. In dapibus ipsum a diam rhoncus gravida. Etiam non dapibus eros. Donec fringilla dui sed "
-                      "augue pretium, nec scelerisque est maximus. Nullam convallis, sem nec blandit maximus, nisi turpis ornare "
-                      "nisl, sit amet volutpat neque massa eu odio. Maecenas malesuada quam ex, posuere congue nibh turpis duis.";
     using std::chrono::high_resolution_clock;
-    auto orig_default = spdlog::default_logger();
-    spdlog::set_default_logger(log);
+    using std::chrono::duration;
+    using std::chrono::duration_cast;
+
+    const char *msg = "Lorem ipsum dolor sit amet, consectetur adipiscing elit. Vestibulum pharetra
+metus cursus " "lacus placerat congue. Nulla egestas, mauris a tincidunt tempus, enim lectus
+volutpat mi, eu consequat sem " "libero nec massa. In dapibus ipsum a diam rhoncus gravida. Etiam
+non dapibus eros. Donec fringilla dui sed " "augue pretium, nec scelerisque est maximus. Nullam
+convallis, sem nec blandit maximus, nisi turpis ornare " "nisl, sit amet volutpat neque massa eu
+odio. Maecenas malesuada quam ex, posuere congue nibh turpis duis.";
+
+    auto orig_default = spdlog::global_logger();
+    spdlog::set_global_logger(log);
     auto start = high_resolution_clock::now();
     for (auto i = 0; i < howmany; ++i)
     {
-        spdlog::log(level::info, msg);
+        spdlog::log(spdlog::level::info, msg);
     }
 
     auto delta = high_resolution_clock::now() - start;
     auto delta_d = duration_cast<duration<double>>(delta).count();
     spdlog::drop(log->name());
-    spdlog::set_default_logger(std::move(orig_default));
-    spdlog::info("{:<30} Elapsed: {:0.2f} secs {:>16n}/sec", log->name(), delta_d, int(howmany / delta_d));
+    spdlog::set_global_logger(std::move(orig_default));
+    spdlog::info("{:<30} Elapsed: {:0.2f} secs {:>16}/sec", log->name(), delta_d, int(howmany /
+delta_d));
 }
+
+*/

bench/formatter-bench.cpp

@@ -4,13 +4,11 @@
 //
 
 #include "benchmark/benchmark.h"
-
+#include "spdlog/pattern_formatter.h"
 #include "spdlog/spdlog.h"
-#include "spdlog/details/pattern_formatter.h"
 
-void bench_formatter(benchmark::State &state, std::string pattern)
-{
-    auto formatter = spdlog::details::make_unique<spdlog::pattern_formatter>(pattern);
+void bench_formatter(benchmark::State &state, std::string pattern) {
+    auto formatter = std::make_unique<spdlog::pattern_formatter>(pattern);
     spdlog::memory_buf_t dest;
     std::string logger_name = "logger-name";
     const char *text = "Hello. This is some message with length of 80                                   ";
@@ -18,30 +16,27 @@ void bench_formatter(benchmark::State &state, std::string pattern)
     spdlog::source_loc source_loc{"a/b/c/d/myfile.cpp", 123, "some_func()"};
     spdlog::details::log_msg msg(source_loc, logger_name, spdlog::level::info, text);
 
-    for (auto _ : state)
-    {
+    for (auto _ : state) {
         dest.clear();
         formatter->format(msg, dest);
         benchmark::DoNotOptimize(dest);
     }
 }
 
-void bench_formatters()
-{
+void bench_formatters() {
     // basic patterns(single flag)
     std::string all_flags = "+vtPnlLaAbBcCYDmdHIMSefFprRTXzEisg@luioO%";
     std::vector<std::string> basic_patterns;
-    for (auto &flag : all_flags)
-    {
+    for (auto &flag : all_flags) {
         auto pattern = std::string("%") + flag;
-        benchmark::RegisterBenchmark(pattern.c_str(), bench_formatter, pattern);
+        benchmark::RegisterBenchmark(pattern.c_str(), &bench_formatter, pattern);
 
         //        pattern = std::string("%16") + flag;
-        //        benchmark::RegisterBenchmark(pattern.c_str(), bench_formatter, pattern);
+        //        benchmark::RegisterBenchmark(pattern.c_str(), &bench_formatter, pattern);
         //
         //        // bench center padding
         //        pattern = std::string("%=16") + flag;
-        //        benchmark::RegisterBenchmark(pattern.c_str(), bench_formatter, pattern);
+        //        benchmark::RegisterBenchmark(pattern.c_str(), &bench_formatter, pattern);
     }
 
     // complex patterns
@@ -50,30 +45,23 @@ void bench_formatters()
         "[%Y-%m-%d %H:%M:%S.%e] [%l] [%n] %v",
         "[%Y-%m-%d %H:%M:%S.%e] [%l] [%n] [%t] %v",
     };
-    for (auto &pattern : patterns)
-    {
-        benchmark::RegisterBenchmark(pattern.c_str(), bench_formatter, pattern)->Iterations(2500000);
+    for (auto &pattern : patterns) {
+        benchmark::RegisterBenchmark(pattern.c_str(), &bench_formatter, pattern)->Iterations(2500000);
     }
 }
 
-int main(int argc, char *argv[])
-{
-
+int main(int argc, char *argv[]) {
     spdlog::set_pattern("[%^%l%$] %v");
-    if (argc != 2)
-    {
+    if (argc != 2) {
         spdlog::error("Usage: {} <pattern> (or \"all\" to bench all)", argv[0]);
         exit(1);
     }
 
     std::string pattern = argv[1];
-    if (pattern == "all")
-    {
+    if (pattern == "all") {
         bench_formatters();
-    }
-    else
-    {
-        benchmark::RegisterBenchmark(pattern.c_str(), bench_formatter, pattern);
+    } else {
+        benchmark::RegisterBenchmark(pattern.c_str(), &bench_formatter, pattern);
     }
     benchmark::Initialize(&argc, argv);
     benchmark::RunSpecifiedBenchmarks();

bench/latency.cpp

@@ -8,74 +8,90 @@
 //
 
 #include "benchmark/benchmark.h"
-
-#include "spdlog/spdlog.h"
-#include "spdlog/async.h"
+#include "spdlog/sinks/async_sink.h"
 #include "spdlog/sinks/basic_file_sink.h"
 #include "spdlog/sinks/daily_file_sink.h"
 #include "spdlog/sinks/null_sink.h"
 #include "spdlog/sinks/rotating_file_sink.h"
+#include "spdlog/spdlog.h"
 
-void prepare_logdir()
-{
-    spdlog::info("Preparing latency_logs directory..");
-#ifdef _WIN32
-    system("if not exist logs mkdir latency_logs");
-    system("del /F /Q logs\\*");
-#else
-    auto rv = system("mkdir -p latency_logs");
-    if (rv != 0)
-    {
-        throw std::runtime_error("Failed to mkdir -p latency_logs");
-    }
-    rv = system("rm -f latency_logs/*");
-    if (rv != 0)
-    {
-        throw std::runtime_error("Failed to rm -f latency_logs/*");
-    }
-#endif
-}
+using namespace spdlog::sinks;
+void bench_c_string(benchmark::State &state, std::shared_ptr<spdlog::logger> logger) {
+    const char *msg =
+        "Lorem ipsum dolor sit amet, consectetur adipiscing elit. Vestibulum pharetra metus cursus "
+        "lacus placerat congue. Nulla egestas, mauris a tincidunt tempus, enim lectus volutpat mi, "
+        "eu consequat sem "
+        "libero nec massa. In dapibus ipsum a diam rhoncus gravida. Etiam non dapibus eros. Donec "
+        "fringilla dui sed "
+        "augue pretium, nec scelerisque est maximus. Nullam convallis, sem nec blandit maximus, "
+        "nisi turpis ornare "
+        "nisl, sit amet volutpat neque massa eu odio. Maecenas malesuada quam ex, posuere congue "
+        "nibh turpis duis.";
 
-void bench_c_string(benchmark::State &state, std::shared_ptr<spdlog::logger> logger)
-{
-    const char *msg = "Lorem ipsum dolor sit amet, consectetur adipiscing elit. Vestibulum pharetra metus cursus "
-                      "lacus placerat congue. Nulla egestas, mauris a tincidunt tempus, enim lectus volutpat mi, eu consequat sem "
-                      "libero nec massa. In dapibus ipsum a diam rhoncus gravida. Etiam non dapibus eros. Donec fringilla dui sed "
-                      "augue pretium, nec scelerisque est maximus. Nullam convallis, sem nec blandit maximus, nisi turpis ornare "
-                      "nisl, sit amet volutpat neque massa eu odio. Maecenas malesuada quam ex, posuere congue nibh turpis duis.";
-
-    for (auto _ : state)
-    {
+    for (auto _ : state) {
         logger->info(msg);
     }
 }
 
-void bench_logger(benchmark::State &state, std::shared_ptr<spdlog::logger> logger)
-{
+void bench_logger(benchmark::State &state, std::shared_ptr<spdlog::logger> logger) {
     int i = 0;
-    for (auto _ : state)
-    {
+    for (auto _ : state) {
         logger->info("Hello logger: msg number {}...............", ++i);
     }
 }
 
-void bench_disabled_macro(benchmark::State &state, std::shared_ptr<spdlog::logger> logger)
-{
+void bench_global_logger(benchmark::State &state, std::shared_ptr<spdlog::logger> logger) {
+    spdlog::set_global_logger(std::move(logger));
     int i = 0;
-    benchmark::DoNotOptimize(i);      // prevent unused warnings
-    benchmark::DoNotOptimize(logger); // prevent unused warnings
-    for (auto _ : state)
-    {
+    for (auto _ : state) {
+        spdlog::info("Hello logger: msg number {}...............", ++i);
+    }
+}
+
+void bench_disabled_macro(benchmark::State &state, std::shared_ptr<spdlog::logger> logger) {
+    int i = 0;
+    benchmark::DoNotOptimize(i);       // prevent unused warnings
+    benchmark::DoNotOptimize(logger);  // prevent unused warnings
+    for (auto _ : state) {
         SPDLOG_LOGGER_DEBUG(logger, "Hello logger: msg number {}...............", i++);
+    }
+}
+
+void bench_disabled_macro_global_logger(benchmark::State &state, std::shared_ptr<spdlog::logger> logger) {
+    spdlog::set_global_logger(std::move(logger));
+    int i = 0;
+    benchmark::DoNotOptimize(i);       // prevent unused warnings
+    benchmark::DoNotOptimize(logger);  // prevent unused warnings
+    for (auto _ : state) {
         SPDLOG_DEBUG("Hello logger: msg number {}...............", i++);
     }
 }
 
-int main(int argc, char *argv[])
-{
+#ifdef __linux__
 
-    using spdlog::sinks::basic_file_sink_mt;
-    using spdlog::sinks::basic_file_sink_st;
+void bench_dev_null() {
+    auto dev_null_st = spdlog::create<basic_file_sink_st>("/dev/null_st", "/dev/null");
+    benchmark::RegisterBenchmark("/dev/null_st", bench_logger, std::move(dev_null_st))->UseRealTime();
+
+    auto dev_null_mt = spdlog::create<basic_file_sink_mt>("/dev/null_mt", "/dev/null");
+    benchmark::RegisterBenchmark("/dev/null_mt", bench_logger, std::move(dev_null_mt))->UseRealTime();
+}
+
+#endif  // __linux__
+
+// test spdlog::get() performance
+// for this test we create multiple null loggers and then call spdlog::get() on one of them multiple times
+// create multiple null loggers and return name of the one to test
+static std::string prepare_null_loggers() {
+    const std::string some_logger_name = "Some logger name";
+    const int null_logger_count = 9;
+    for (int i = 0; i < null_logger_count; i++) {
+        spdlog::create<null_sink_mt>(some_logger_name + std::to_string(i));
+    }
+    return some_logger_name + std::to_string(null_logger_count / 2);
+}
+
+int main(int argc, char *argv[]) {
     using spdlog::sinks::null_sink_mt;
     using spdlog::sinks::null_sink_st;
 
@@ -83,87 +99,67 @@ int main(int argc, char *argv[])
     size_t rotating_files = 5;
     int n_threads = benchmark::CPUInfo::Get().num_cpus;
 
-    prepare_logdir();
+    auto full_bench = argc > 1 && std::string(argv[1]) == "full";
 
     // disabled loggers
     auto disabled_logger = std::make_shared<spdlog::logger>("bench", std::make_shared<null_sink_mt>());
     disabled_logger->set_level(spdlog::level::off);
     benchmark::RegisterBenchmark("disabled-at-compile-time", bench_disabled_macro, disabled_logger);
+    benchmark::RegisterBenchmark("disabled-at-compile-time (global logger)", bench_disabled_macro_global_logger, disabled_logger);
     benchmark::RegisterBenchmark("disabled-at-runtime", bench_logger, disabled_logger);
-    // with backtrace of 64
-    auto tracing_disabled_logger = std::make_shared<spdlog::logger>("bench", std::make_shared<null_sink_mt>());
-    tracing_disabled_logger->enable_backtrace(64);
-    benchmark::RegisterBenchmark("disabled-at-runtime/backtrace", bench_logger, tracing_disabled_logger);
+    benchmark::RegisterBenchmark("disabled-at-runtime (global logger)", bench_global_logger, disabled_logger);
 
     auto null_logger_st = std::make_shared<spdlog::logger>("bench", std::make_shared<null_sink_st>());
     benchmark::RegisterBenchmark("null_sink_st (500_bytes c_str)", bench_c_string, std::move(null_logger_st));
     benchmark::RegisterBenchmark("null_sink_st", bench_logger, null_logger_st);
-    // with backtrace of 64
-    auto tracing_null_logger_st = std::make_shared<spdlog::logger>("bench", std::make_shared<null_sink_st>());
-    tracing_null_logger_st->enable_backtrace(64);
-    benchmark::RegisterBenchmark("null_sink_st/backtrace", bench_logger, tracing_null_logger_st);
+    benchmark::RegisterBenchmark("null_sink_st (global logger)", bench_global_logger, null_logger_st);
 
-    // basic_st
-    auto basic_st = spdlog::basic_logger_st("basic_st", "latency_logs/basic_st.log", true);
-    benchmark::RegisterBenchmark("basic_st", bench_logger, std::move(basic_st))->UseRealTime();
-    spdlog::drop("basic_st");
-    // with backtrace of 64
-    auto tracing_basic_st = spdlog::basic_logger_st("tracing_basic_st", "latency_logs/tracing_basic_st.log", true);
-    tracing_basic_st->enable_backtrace(64);
-    benchmark::RegisterBenchmark("basic_st/backtrace", bench_logger, std::move(tracing_basic_st))->UseRealTime();
-    spdlog::drop("tracing_basic_st");
+#ifdef __linux__
+    bench_dev_null();
+#endif  // __linux__
 
-    // rotating st
-    auto rotating_st = spdlog::rotating_logger_st("rotating_st", "latency_logs/rotating_st.log", file_size, rotating_files);
-    benchmark::RegisterBenchmark("rotating_st", bench_logger, std::move(rotating_st))->UseRealTime();
-    spdlog::drop("rotating_st");
-    // with backtrace of 64
-    auto tracing_rotating_st =
-        spdlog::rotating_logger_st("tracing_rotating_st", "latency_logs/tracing_rotating_st.log", file_size, rotating_files);
-    benchmark::RegisterBenchmark("rotating_st/backtrace", bench_logger, std::move(tracing_rotating_st))->UseRealTime();
-    spdlog::drop("tracing_rotating_st");
+    if (full_bench) {
+        // basic_st
+        auto basic_st = spdlog::create<basic_file_sink_st>("basic_st", "latency_logs/basic_st.log", true);
+        benchmark::RegisterBenchmark("basic_st", bench_logger, std::move(basic_st))->UseRealTime();
 
-    // daily st
-    auto daily_st = spdlog::daily_logger_mt("daily_st", "latency_logs/daily_st.log");
-    benchmark::RegisterBenchmark("daily_st", bench_logger, std::move(daily_st))->UseRealTime();
-    spdlog::drop("daily_st");
-    auto tracing_daily_st = spdlog::daily_logger_mt("tracing_daily_st", "latency_logs/daily_st.log");
-    benchmark::RegisterBenchmark("daily_st/backtrace", bench_logger, std::move(tracing_daily_st))->UseRealTime();
-    spdlog::drop("tracing_daily_st");
+        // rotating st
+        auto rotating_st =
+            spdlog::create<rotating_file_sink_st>("rotating_st", "latency_logs/rotating_st.log", file_size, rotating_files);
+        benchmark::RegisterBenchmark("rotating_st", bench_logger, std::move(rotating_st))->UseRealTime();
 
-    //
-    // Multi threaded bench, 10 loggers using same logger concurrently
-    //
-    auto null_logger_mt = std::make_shared<spdlog::logger>("bench", std::make_shared<null_sink_mt>());
-    benchmark::RegisterBenchmark("null_sink_mt", bench_logger, null_logger_mt)->Threads(n_threads)->UseRealTime();
+        // daily st
+        auto daily_st = spdlog::create<daily_file_sink_st>("daily_st", "latency_logs/daily_st.log", 0, 1);
+        benchmark::RegisterBenchmark("daily_st", bench_logger, std::move(daily_st))->UseRealTime();
 
-    // basic_mt
-    auto basic_mt = spdlog::basic_logger_mt("basic_mt", "latency_logs/basic_mt.log", true);
-    benchmark::RegisterBenchmark("basic_mt", bench_logger, std::move(basic_mt))->Threads(n_threads)->UseRealTime();
-    spdlog::drop("basic_mt");
+        //
+        // Multi threaded bench, 10 loggers using same logger concurrently
+        //
+        auto null_logger_mt = std::make_shared<spdlog::logger>("bench", std::make_shared<null_sink_mt>());
+        benchmark::RegisterBenchmark("null_sink_mt", bench_logger, null_logger_mt)->Threads(n_threads)->UseRealTime();
 
-    // rotating mt
-    auto rotating_mt = spdlog::rotating_logger_mt("rotating_mt", "latency_logs/rotating_mt.log", file_size, rotating_files);
-    benchmark::RegisterBenchmark("rotating_mt", bench_logger, std::move(rotating_mt))->Threads(n_threads)->UseRealTime();
-    spdlog::drop("rotating_mt");
+        // basic_mt
+        auto basic_mt = spdlog::create<basic_file_sink_mt>("basic_mt", "latency_logs/basic_mt.log", true);
+        benchmark::RegisterBenchmark("basic_mt", bench_logger, std::move(basic_mt))->Threads(n_threads)->UseRealTime();
 
-    // daily mt
-    auto daily_mt = spdlog::daily_logger_mt("daily_mt", "latency_logs/daily_mt.log");
-    benchmark::RegisterBenchmark("daily_mt", bench_logger, std::move(daily_mt))->Threads(n_threads)->UseRealTime();
-    spdlog::drop("daily_mt");
+        // rotating mt
+        auto rotating_mt =
+            spdlog::create<rotating_file_sink_mt>("rotating_mt", "latency_logs/rotating_mt.log", file_size, rotating_files);
+        benchmark::RegisterBenchmark("rotating_mt", bench_logger, std::move(rotating_mt))->Threads(n_threads)->UseRealTime();
 
-    // async
-    auto queue_size = 1024 * 1024 * 3;
-    auto tp = std::make_shared<spdlog::details::thread_pool>(queue_size, 1);
-    auto async_logger = std::make_shared<spdlog::async_logger>(
-        "async_logger", std::make_shared<null_sink_mt>(), std::move(tp), spdlog::async_overflow_policy::overrun_oldest);
+        // daily mt
+        auto daily_mt = spdlog::create<daily_file_sink_mt>("daily_mt", "latency_logs/daily_mt.log", 0, 1);
+        benchmark::RegisterBenchmark("daily_mt", bench_logger, std::move(daily_mt))->Threads(n_threads)->UseRealTime();
+    }
+    using spdlog::sinks::async_sink;
+    async_sink::config config;
+    config.queue_size = async_sink::default_queue_size;;
+
+    config.sinks.push_back(std::make_shared<null_sink_st>());
+    config.policy = async_sink::overflow_policy::overrun_oldest;
+    auto async_logger = std::make_shared<spdlog::logger>("async_logger", std::make_shared<async_sink>(config));
     benchmark::RegisterBenchmark("async_logger", bench_logger, async_logger)->Threads(n_threads)->UseRealTime();
 
-    auto async_logger_tracing = std::make_shared<spdlog::async_logger>(
-        "async_logger_tracing", std::make_shared<null_sink_mt>(), std::move(tp), spdlog::async_overflow_policy::overrun_oldest);
-    async_logger_tracing->enable_backtrace(32);
-    benchmark::RegisterBenchmark("async_logger/tracing", bench_logger, async_logger_tracing)->Threads(n_threads)->UseRealTime();
-
     benchmark::Initialize(&argc, argv);
     benchmark::RunSpecifiedBenchmarks();
 }

bench/meson.build

@@ -1,15 +0,0 @@
-benchmark = dependency('benchmark')
-
-bench_matrix = [
-  ['bench',           [spdlog_dep],            []],
-  ['async_bench',     [spdlog_dep],            []],
-  ['formatter-bench', [spdlog_dep, benchmark], ['all']],
-  ['latency',         [spdlog_dep, benchmark], []],
-]
-
-foreach i : bench_matrix
-  bench_exe = executable(i[0], i[0] + '.cpp', dependencies: i[1])
-  benchmark('bench_' + i[0], bench_exe, args: i[2])
-endforeach
-
-run_command(find_program('mkdir'), meson.current_build_dir() + '/logs')

bench/utils.h

@@ -11,9 +11,8 @@
 
 namespace utils {
 
-template<typename T>
-inline std::string format(const T &value)
-{
+template <typename T>
+inline std::string format(const T &value) {
     static std::locale loc("");
     std::stringstream ss;
     ss.imbue(loc);
@@ -21,9 +20,8 @@ inline std::string format(const T &value)
     return ss.str();
 }
 
-template<>
-inline std::string format(const double &value)
-{
+template <>
+inline std::string format(const double &value) {
     static std::locale loc("");
     std::stringstream ss;
     ss.imbue(loc);
@@ -31,4 +29,4 @@ inline std::string format(const double &value)
     return ss.str();
 }
 
-} // namespace utils
+}  // namespace utils

cmake/fmtlib.cmake

@@ -0,0 +1,15 @@
+include(FetchContent)
+
+FetchContent_Declare(
+    fmt
+    DOWNLOAD_EXTRACT_TIMESTAMP FALSE
+    URL https://github.com/fmtlib/fmt/archive/refs/tags/11.1.4.tar.gz
+    URL_HASH SHA256=ac366b7b4c2e9f0dde63a59b3feb5ee59b67974b14ee5dc9ea8ad78aa2c1ee1e)
+
+FetchContent_GetProperties(fmt)
+if(NOT fmt_POPULATED)
+    # We do not require os features of fmt
+    set(FMT_OS OFF CACHE BOOL "Disable FMT_OS" FORCE)
+    FetchContent_MakeAvailable(fmt)
+    set_target_properties(fmt PROPERTIES FOLDER "third-party")
+endif()

cmake/ide.cmake

@@ -1,6 +1,6 @@
-#---------------------------------------------------------------------------------------
+# ---------------------------------------------------------------------------------------
 # IDE support for headers
-#---------------------------------------------------------------------------------------
+# ---------------------------------------------------------------------------------------
 set(SPDLOG_HEADERS_DIR "${CMAKE_CURRENT_LIST_DIR}/../include")
 
 file(GLOB SPDLOG_TOP_HEADERS "${SPDLOG_HEADERS_DIR}/spdlog/*.h")
@@ -8,11 +8,11 @@ file(GLOB SPDLOG_DETAILS_HEADERS "${SPDLOG_HEADERS_DIR}/spdlog/details/*.h")
 file(GLOB SPDLOG_SINKS_HEADERS "${SPDLOG_HEADERS_DIR}/spdlog/sinks/*.h")
 file(GLOB SPDLOG_FMT_HEADERS "${SPDLOG_HEADERS_DIR}/spdlog/fmt/*.h")
 file(GLOB SPDLOG_FMT_BUNDELED_HEADERS "${SPDLOG_HEADERS_DIR}/spdlog/fmt/bundled/*.h")
-set(SPDLOG_ALL_HEADERS ${SPDLOG_TOP_HEADERS} ${SPDLOG_DETAILS_HEADERS} ${SPDLOG_SINKS_HEADERS} ${SPDLOG_FMT_HEADERS} ${SPDLOG_FMT_BUNDELED_HEADERS})
+set(SPDLOG_ALL_HEADERS ${SPDLOG_TOP_HEADERS} ${SPDLOG_DETAILS_HEADERS} ${SPDLOG_SINKS_HEADERS} ${SPDLOG_FMT_HEADERS}
+                       ${SPDLOG_FMT_BUNDELED_HEADERS})
 
 source_group("Header Files\\spdlog" FILES ${SPDLOG_TOP_HEADERS})
 source_group("Header Files\\spdlog\\details" FILES ${SPDLOG_DETAILS_HEADERS})
 source_group("Header Files\\spdlog\\sinks" FILES ${SPDLOG_SINKS_HEADERS})
 source_group("Header Files\\spdlog\\fmt" FILES ${SPDLOG_FMT_HEADERS})
 source_group("Header Files\\spdlog\\fmt\\bundled\\" FILES ${SPDLOG_FMT_BUNDELED_HEADERS})
-

cmake/spdlog.pc.in

@@ -1,13 +0,0 @@
-prefix=@CMAKE_INSTALL_PREFIX@
-exec_prefix=${prefix}
-includedir=${prefix}/include
-libdir=${exec_prefix}/@CMAKE_INSTALL_LIBDIR@
-
-Name: lib@PROJECT_NAME@
-Description: Fast C++ logging library.
-URL: https://github.com/gabime/@PROJECT_NAME@
-Version: @SPDLOG_VERSION@
-CFlags: -I${includedir} @PKG_CONFIG_DEFINES@
-Libs: -L${libdir} -lspdlog -pthread
-Requires: @PKG_CONFIG_REQUIRES@
-

cmake/spdlogCPack.cmake

@@ -1,15 +1,7 @@
-set(CPACK_GENERATOR
-    TGZ
-    ZIP
-    )
+set(CPACK_GENERATOR "TGZ;ZIP" CACHE STRING "Semicolon separated list of generators")
 
 set(CPACK_INCLUDE_TOPLEVEL_DIRECTORY 0)
-set(CPACK_INSTALL_CMAKE_PROJECTS
-    "${CMAKE_BINARY_DIR}"
-    "${PROJECT_NAME}"
-    ALL
-    .
-    )
+set(CPACK_INSTALL_CMAKE_PROJECTS "${CMAKE_BINARY_DIR}" "${PROJECT_NAME}" ALL .)
 
 set(CPACK_PROJECT_URL "https://github.com/gabime/spdlog")
 set(CPACK_PACKAGE_VENDOR "Gabi Melman")
@@ -19,14 +11,50 @@ set(CPACK_PACKAGE_VERSION_MAJOR ${PROJECT_VERSION_MAJOR})
 set(CPACK_PACKAGE_VERSION_MINOR ${PROJECT_VERSION_MINOR})
 set(CPACK_PACKAGE_VERSION_PATCH ${PROJECT_VERSION_PATCH})
 set(CPACK_PACKAGE_VERSION ${PROJECT_VERSION_MAJOR}.${PROJECT_VERSION_MINOR}.${PROJECT_VERSION_PATCH})
-if (PROJECT_VERSION_TWEAK)
+if(PROJECT_VERSION_TWEAK)
     set(CPACK_PACKAGE_VERSION ${CPACK_PACKAGE_VERSION}.${PROJECT_VERSION_TWEAK})
-endif ()
-set(CPACK_PACKAGE_RELOCATABLE ON)
+endif()
+set(CPACK_PACKAGE_RELOCATABLE ON CACHE BOOL "Build relocatable package")
 
 set(CPACK_RPM_PACKAGE_LICENSE "MIT")
-set(CPACK_RPM_PACKAGE_GROUP "System Environment/Libraries")
+set(CPACK_RPM_PACKAGE_GROUP "Development/Libraries")
+set(CPACK_DEBIAN_PACKAGE_SECTION "libs")
 set(CPACK_RPM_PACKAGE_URL ${CPACK_PROJECT_URL})
-set(CPACK_RPM_PACKAGE_DESCRIPTION "Very fast, header-only/compiled, C++ logging library.")
+set(CPACK_DEBIAN_PACKAGE_HOMEPAGE ${CPACK_PROJECT_URL})
+set(CPACK_RPM_PACKAGE_DESCRIPTION "Fast C++ logging library.")
+set(CPACK_DEBIAN_PACKAGE_DESCRIPTION "FastC++ logging library.")
+
+if(CPACK_PACKAGE_NAME)
+    set(CPACK_RPM_FILE_NAME "${CPACK_PACKAGE_NAME}-${CPACK_PACKAGE_VERSION}")
+    set(CPACK_DEBIAN_FILE_NAME "${CPACK_PACKAGE_NAME}-${CPACK_PACKAGE_VERSION}")
+else()
+    set(CPACK_RPM_FILE_NAME "${PROJECT_NAME}-${CPACK_PACKAGE_VERSION}")
+    set(CPACK_DEBIAN_FILE_NAME "${PROJECT_NAME}-${CPACK_PACKAGE_VERSION}")
+    set(CPACK_RPM_PACKAGE_NAME "${PROJECT_NAME}")
+    set(CPACK_DEBIAN_PACKAGE_NAME "${PROJECT_NAME}")
+endif()
+
+if(CPACK_RPM_PACKAGE_RELEASE)
+    set(CPACK_RPM_FILE_NAME "${CPACK_RPM_FILE_NAME}-${CPACK_RPM_PACKAGE_RELEASE}")
+endif()
+if(CPACK_DEBIAN_PACKAGE_RELEASE)
+    set(CPACK_DEBIAN_FILE_NAME "${CPACK_DEBIAN_FILE_NAME}-${CPACK_DEBIAN_PACKAGE_RELEASE}")
+endif()
+
+if(CPACK_RPM_PACKAGE_ARCHITECTURE)
+    set(CPACK_RPM_FILE_NAME "${CPACK_RPM_FILE_NAME}.${CPACK_RPM_PACKAGE_ARCHITECTURE}")
+endif()
+if(CPACK_DEBIAN_PACKAGE_ARCHITECTURE)
+    set(CPACK_DEBIAN_FILE_NAME "${CPACK_DEBIAN_FILE_NAME}.${CPACK_DEBIAN_PACKAGE_ARCHITECTURE}")
+endif()
+set(CPACK_RPM_FILE_NAME "${CPACK_RPM_FILE_NAME}.rpm")
+set(CPACK_DEBIAN_FILE_NAME "${CPACK_DEBIAN_FILE_NAME}.deb")
+
+if(NOT CPACK_PACKAGE_RELOCATABLE)
+    # Depend on pkgconfig rpm to create the system pkgconfig folder
+    set(CPACK_RPM_PACKAGE_REQUIRES pkgconfig)
+    set(CPACK_RPM_EXCLUDE_FROM_AUTO_FILELIST_ADDITION
+        "${CPACK_PACKAGING_INSTALL_PREFIX}/${CMAKE_INSTALL_LIBDIR}/pkgconfig")
+endif()
 
 include(CPack)

cmake/spdlogConfig.cmake.in

@@ -1,15 +1,15 @@
 # Copyright(c) 2019 spdlog authors
 # Distributed under the MIT License (http://opensource.org/licenses/MIT)
 
+@PACKAGE_INIT@
+
+include(CMakeFindDependencyMacro)
+
 find_package(Threads REQUIRED)
 
-set(SPDLOG_FMT_EXTERNAL @SPDLOG_FMT_EXTERNAL@)
+find_dependency(fmt 11 CONFIG)
+
 set(config_targets_file @config_targets_file@)
-
-if(SPDLOG_FMT_EXTERNAL)
-    include(CMakeFindDependencyMacro)
-    find_dependency(fmt CONFIG)
-endif()
-
-
 include("${CMAKE_CURRENT_LIST_DIR}/${config_targets_file}")
+
+check_required_components(spdlog)

cmake/utils.cmake

@@ -1,47 +1,73 @@
-# Get spdlog version from include/spdlog/version.h and put it in SPDLOG_VERSION
-function(spdlog_extract_version)
-	file(READ "${CMAKE_CURRENT_LIST_DIR}/include/spdlog/version.h" file_contents)
-	string(REGEX MATCH "SPDLOG_VER_MAJOR ([0-9]+)" _  "${file_contents}")
-	if(NOT CMAKE_MATCH_COUNT EQUAL 1)
-        message(FATAL_ERROR "Could not extract major version number from spdlog/version.h")
-	endif()
-	set(ver_major ${CMAKE_MATCH_1})
-
-	string(REGEX MATCH "SPDLOG_VER_MINOR ([0-9]+)" _  "${file_contents}")
-	if(NOT CMAKE_MATCH_COUNT EQUAL 1)
-        message(FATAL_ERROR "Could not extract minor version number from spdlog/version.h")
-	endif()
-
-	set(ver_minor ${CMAKE_MATCH_1})
-	string(REGEX MATCH "SPDLOG_VER_PATCH ([0-9]+)" _  "${file_contents}")
-	if(NOT CMAKE_MATCH_COUNT EQUAL 1)
-        message(FATAL_ERROR "Could not extract patch version number from spdlog/version.h")
-	endif()
-	set(ver_patch ${CMAKE_MATCH_1})
-
-    set(SPDLOG_VERSION_MAJOR ${ver_major} PARENT_SCOPE)
-	set (SPDLOG_VERSION "${ver_major}.${ver_minor}.${ver_patch}" PARENT_SCOPE)
-endfunction()
-
-
-# Turn on warnings on the given target
-function(spdlog_enable_warnings target_name)
-    target_compile_options(${target_name} PRIVATE
-        $<$<OR:$<CXX_COMPILER_ID:Clang>,$<CXX_COMPILER_ID:AppleClang>,$<CXX_COMPILER_ID:GNU>>:
-            -Wall -Wextra -Wconversion -pedantic -Wfatal-errors>
-        $<$<CXX_COMPILER_ID:MSVC>:/W4 /WX>)
-endfunction()
-
-
-# Enable address sanitizer (gcc/clang only)
-function(spdlog_enable_sanitizer target_name)
-	if (NOT CMAKE_CXX_COMPILER_ID MATCHES "GNU|Clang")
-		message(FATAL_ERROR "Sanitizer supported only for gcc/clang")
-	endif()
-	message(STATUS "Address sanitizer enabled")
-	target_compile_options(${target_name} PRIVATE -fsanitize=address,undefined)
-	target_compile_options(${target_name} PRIVATE -fno-sanitize=signed-integer-overflow)
-	target_compile_options(${target_name} PRIVATE -fno-sanitize-recover=all)
-	target_compile_options(${target_name} PRIVATE -fno-omit-frame-pointer)
-	target_link_libraries(${target_name} PRIVATE -fsanitize=address,undefined -fuse-ld=gold)
-endfunction()
+# Get spdlog version from include/spdlog/version.h and put it in SPDLOG_VERSION
+function(spdlog_extract_version)
+    file(READ "${CMAKE_CURRENT_LIST_DIR}/include/spdlog/version.h" file_contents)
+    string(REGEX MATCH "SPDLOG_VER_MAJOR ([0-9]+)" _ "${file_contents}")
+    if(NOT CMAKE_MATCH_COUNT EQUAL 1)
+        message(FATAL_ERROR "Could not extract major version number from spdlog/version.h")
+    endif()
+    set(ver_major ${CMAKE_MATCH_1})
+
+    string(REGEX MATCH "SPDLOG_VER_MINOR ([0-9]+)" _ "${file_contents}")
+    if(NOT CMAKE_MATCH_COUNT EQUAL 1)
+        message(FATAL_ERROR "Could not extract minor version number from spdlog/version.h")
+    endif()
+
+    set(ver_minor ${CMAKE_MATCH_1})
+    string(REGEX MATCH "SPDLOG_VER_PATCH ([0-9]+)" _ "${file_contents}")
+    if(NOT CMAKE_MATCH_COUNT EQUAL 1)
+        message(FATAL_ERROR "Could not extract patch version number from spdlog/version.h")
+    endif()
+    set(ver_patch ${CMAKE_MATCH_1})
+
+    set(SPDLOG_VERSION_MAJOR ${ver_major} PARENT_SCOPE)
+    set(SPDLOG_VERSION_MINOR ${ver_minor} PARENT_SCOPE)
+    set(SPDLOG_VERSION_PATCH ${ver_patch} PARENT_SCOPE)
+    set(SPDLOG_VERSION "${ver_major}.${ver_minor}.${ver_patch}" PARENT_SCOPE)
+endfunction()
+
+# Turn on warnings on the given target
+function(spdlog_enable_warnings target_name)
+    if(SPDLOG_BUILD_WARNINGS)
+        if(CMAKE_CXX_COMPILER_ID STREQUAL "MSVC")
+            list(APPEND MSVC_OPTIONS "/W3")
+            if(MSVC_VERSION GREATER 1900) # Allow non fatal security warnings for msvc 2015
+                list(APPEND MSVC_OPTIONS "/WX")
+            endif()
+        endif()
+
+        target_compile_options(
+            ${target_name}
+            PRIVATE $<$<OR:$<CXX_COMPILER_ID:Clang>,$<CXX_COMPILER_ID:AppleClang>,$<CXX_COMPILER_ID:GNU>>:
+                    -Wall
+                    -Wextra
+                    -Wconversion
+                    -pedantic
+                    -Werror
+                    -Wfatal-errors>
+                    $<$<CXX_COMPILER_ID:MSVC>:${MSVC_OPTIONS}>)
+    endif()
+endfunction()
+
+# Enable address sanitizer (gcc/clang only)
+function(spdlog_enable_addr_sanitizer target_name)
+    if(NOT CMAKE_CXX_COMPILER_ID MATCHES "GNU|Clang")
+        message(FATAL_ERROR "Sanitizer supported only for gcc/clang")
+    endif()
+    message(STATUS "Address sanitizer enabled")
+    target_compile_options(${target_name} PRIVATE -fsanitize=address,undefined)
+    target_compile_options(${target_name} PRIVATE -fno-sanitize=signed-integer-overflow)
+    target_compile_options(${target_name} PRIVATE -fno-sanitize-recover=all)
+    target_compile_options(${target_name} PRIVATE -fno-omit-frame-pointer)
+    target_link_libraries(${target_name} PRIVATE -fsanitize=address,undefined -fuse-ld=gold)
+endfunction()
+
+# Enable thread sanitizer (gcc/clang only)
+function(spdlog_enable_thread_sanitizer target_name)
+    if(NOT CMAKE_CXX_COMPILER_ID MATCHES "GNU|Clang")
+        message(FATAL_ERROR "Sanitizer supported only for gcc/clang")
+    endif()
+    message(STATUS "Thread sanitizer enabled")
+    target_compile_options(${target_name} PRIVATE -fsanitize=thread)
+    target_compile_options(${target_name} PRIVATE -fno-omit-frame-pointer)
+    target_link_libraries(${target_name} PRIVATE -fsanitize=thread -fuse-ld=gold)
+endfunction()

cmake/version.rc.in

@@ -0,0 +1,42 @@
+#define APSTUDIO_READONLY_SYMBOLS
+#include <windows.h>
+#undef APSTUDIO_READONLY_SYMBOLS
+
+LANGUAGE LANG_ENGLISH, SUBLANG_ENGLISH_US
+
+
+VS_VERSION_INFO VERSIONINFO
+ FILEVERSION @SPDLOG_VERSION_MAJOR@,@SPDLOG_VERSION_MINOR@,@SPDLOG_VERSION_PATCH@,0
+ PRODUCTVERSION @SPDLOG_VERSION_MAJOR@,@SPDLOG_VERSION_MINOR@,@SPDLOG_VERSION_PATCH@,0
+ FILEFLAGSMASK 0x3fL
+#ifdef _DEBUG
+ FILEFLAGS 0x1L
+#else
+ FILEFLAGS 0x0L
+#endif
+ FILEOS 0x40004L
+ FILETYPE 0x2L
+ FILESUBTYPE 0x0L
+BEGIN
+    BLOCK "StringFileInfo"
+    BEGIN
+        BLOCK "040904b0"
+        BEGIN
+            VALUE "FileDescription", "spdlog dll\0"
+            VALUE "FileVersion", "@SPDLOG_VERSION@.0\0"
+            VALUE "InternalName", "spdlog.dll\0"
+            VALUE "LegalCopyright", "Copyright (C) spdlog\0"
+            VALUE "ProductName", "spdlog\0"
+            VALUE "ProductVersion", "@SPDLOG_VERSION@.0\0"
+        END
+    END
+    BLOCK "VarFileInfo"
+    BEGIN
+        VALUE "Translation", 0x409, 1200
+    END
+END
+
+
+
+
+

example/CMakeLists.txt

@@ -1,29 +1,12 @@
-# Copyright(c) 2019 spdlog authors
-# Distributed under the MIT License (http://opensource.org/licenses/MIT)
+# Copyright(c) 2019 spdlog authors Distributed under the MIT License (http://opensource.org/licenses/MIT)
 
-cmake_minimum_required(VERSION 3.1)
-project(spdlog_examples CXX)
+cmake_minimum_required(VERSION 3.14)
+project(spdlog_example CXX)
 
 if(NOT TARGET spdlog)
     # Stand-alone build
-    find_package(spdlog REQUIRED)
+    find_package(spdlog 2 REQUIRED)
 endif()
 
-#---------------------------------------------------------------------------------------
-# Example of using pre-compiled library
-#---------------------------------------------------------------------------------------
 add_executable(example example.cpp)
-spdlog_enable_warnings(example)
-target_link_libraries(example PRIVATE spdlog::spdlog)
-
-#---------------------------------------------------------------------------------------
-# Example of using header-only library
-#---------------------------------------------------------------------------------------
-if(SPDLOG_BUILD_EXAMPLE_HO)
-    add_executable(example_header_only example.cpp)
-    spdlog_enable_warnings(example_header_only)
-    target_link_libraries(example_header_only PRIVATE spdlog::spdlog_header_only)
-endif()
-
-# Create logs directory
-file(MAKE_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}/logs")
+target_link_libraries(example PRIVATE spdlog::spdlog $<$<BOOL:${MINGW}>:ws2_32>)

example/example.cpp

@@ -4,25 +4,35 @@
 
 // spdlog usage example
 
+#include <chrono>
 #include <cstdio>
 
 void stdout_logger_example();
 void basic_example();
 void rotating_example();
 void daily_example();
+void callback_example();
 void async_example();
 void binary_example();
+void vector_example();
+void stopwatch_example();
 void trace_example();
 void multi_sink_example();
 void user_defined_example();
 void err_handler_example();
 void syslog_example();
+void udp_example();
+void custom_flags_example();
+void file_events_example();
+void replace_global_logger_example();
 
 #include "spdlog/spdlog.h"
+#include "spdlog/version.h"
 
-int main(int, char *[])
-{
-    spdlog::info("Welcome to spdlog version {}.{}.{}  !", SPDLOG_VER_MAJOR, SPDLOG_VER_MINOR, SPDLOG_VER_PATCH);
+using namespace spdlog::sinks;
+
+int main(int, char *[]) {
+    spdlog::info("Welcome to spdlog version {}.{}.{} !", SPDLOG_VER_MAJOR, SPDLOG_VER_MINOR, SPDLOG_VER_PATCH);
     spdlog::warn("Easy padding in numbers like {:08d}", 12);
     spdlog::critical("Support for int: {0:d};  hex: {0:x};  oct: {0:o}; bin: {0:b}", 42);
     spdlog::info("Support for floats {:03.2f}", 1.23456);
@@ -30,56 +40,43 @@ int main(int, char *[])
     spdlog::info("{:>8} aligned, {:<8} aligned", "right", "left");
 
     // Runtime log levels
-    spdlog::set_level(spdlog::level::info); // Set global log level to info
+    spdlog::set_level(spdlog::level::info);  // Set global log level to info
     spdlog::debug("This message should not be displayed!");
-    spdlog::set_level(spdlog::level::trace); // Set specific logger's log level
+    spdlog::set_level(spdlog::level::trace);  // Set specific logger's log level
     spdlog::debug("This message should be displayed..");
 
     // Customize msg format for all loggers
     spdlog::set_pattern("[%H:%M:%S %z] [%^%L%$] [thread %t] %v");
     spdlog::info("This an info message with custom format");
-    spdlog::set_pattern("%+"); // back to default format
+    spdlog::set_pattern("%+");  // back to default format
     spdlog::set_level(spdlog::level::info);
 
-    // Backtrace support
-    // Loggers can store in a ring buffer all messages (including debug/trace) for later inspection.
-    // When needed, call dump_backtrace() to see what happened:
-    spdlog::enable_backtrace(10); // create ring buffer with capacity of 10  messages
-    for (int i = 0; i < 100; i++)
-    {
-        spdlog::debug("Backtrace message {}", i); // not logged..
-    }
-    // e.g. if some error happened:
-    spdlog::dump_backtrace(); // log them now!
-
-    try
-    {
+    try {
         stdout_logger_example();
         basic_example();
         rotating_example();
         daily_example();
+        callback_example();
         async_example();
         binary_example();
+        vector_example();
         multi_sink_example();
         user_defined_example();
         err_handler_example();
         trace_example();
+        stopwatch_example();
+        udp_example();
+        custom_flags_example();
+        file_events_example();
+        replace_global_logger_example();
 
-        // Flush all *registered* loggers using a worker thread every 3 seconds.
-        // note: registered loggers *must* be thread safe for this to work correctly!
-        spdlog::flush_every(std::chrono::seconds(3));
-
-        // Apply some function on all registered loggers
-        spdlog::apply_all([&](std::shared_ptr<spdlog::logger> l) { l->info("End of example."); });
-
-        // Release all spdlog resources, and drop all loggers in the registry.
+        // Release all spdlog resources
         // This is optional (only mandatory if using windows + async log).
         spdlog::shutdown();
     }
 
     // Exceptions will only be thrown upon failed logger or sink construction (not during logging).
-    catch (const spdlog::spdlog_ex &ex)
-    {
+    catch (const spdlog::spdlog_ex &ex) {
         std::printf("Log initialization failed: %s\n", ex.what());
         return 1;
     }
@@ -87,47 +84,46 @@ int main(int, char *[])
 
 #include "spdlog/sinks/stdout_color_sinks.h"
 // or #include "spdlog/sinks/stdout_sinks.h" if no colors needed.
-void stdout_logger_example()
-{
-    // Create color multi threaded logger.
-    auto console = spdlog::stdout_color_mt("console");
+void stdout_logger_example() {
+    // Create color multithreading logger.
+    auto console = spdlog::create<stdout_color_sink_mt>("console");
     // or for stderr:
-    // auto console = spdlog::stderr_color_mt("error-logger");
+    // auto console = spdlog::create<stderr_color_sink_mt>("console");
 }
 
 #include "spdlog/sinks/basic_file_sink.h"
-void basic_example()
-{
+void basic_example() {
     // Create basic file logger (not rotated).
-    auto my_logger = spdlog::basic_logger_mt("file_logger", "logs/basic-log.txt");
+    auto my_logger = spdlog::create<basic_file_sink_mt>("file_logger", "logs/basic-log.txt", true);
 }
 
 #include "spdlog/sinks/rotating_file_sink.h"
-void rotating_example()
-{
+void rotating_example() {
     // Create a file rotating logger with 5mb size max and 3 rotated files.
-    auto rotating_logger = spdlog::rotating_logger_mt("some_logger_name", "logs/rotating.txt", 1048576 * 5, 3);
+    auto rotating_logger = spdlog::create<rotating_file_sink_mt>("some_logger_name", "logs/rotating.txt", 1048576 * 5, 3);
 }
 
 #include "spdlog/sinks/daily_file_sink.h"
-void daily_example()
-{
+void daily_example() {
     // Create a daily logger - a new file is created every day on 2:30am.
-    auto daily_logger = spdlog::daily_logger_mt("daily_logger", "logs/daily.txt", 2, 30);
+    auto daily_logger = spdlog::create<daily_file_format_sink_mt>("daily_logger", "logs/daily.txt", 2, 30);
 }
 
-#include "spdlog/async.h"
-void async_example()
-{
-    // Default thread pool settings can be modified *before* creating the async logger:
-    // spdlog::init_thread_pool(32768, 1); // queue with max 32k items 1 backing thread.
-    auto async_file = spdlog::basic_logger_mt<spdlog::async_factory>("async_file_logger", "logs/async_log.txt");
-    // alternatively:
-    // auto async_file = spdlog::create_async<spdlog::sinks::basic_file_sink_mt>("async_file_logger", "logs/async_log.txt");
+#include "spdlog/sinks/callback_sink.h"
+void callback_example() {
+    // Create the logger
+    auto logger = spdlog::create<callback_sink_mt>("custom_callback_logger", [](const spdlog::details::log_msg & /*msg*/) {
+        // do what you need to do with msg
+    });
+}
 
-    for (int i = 1; i < 101; ++i)
-    {
-        async_file->info("Async message #{}", i);
+#include "spdlog/sinks/async_sink.h"
+void async_example() {
+    using spdlog::sinks::async_sink;
+    auto sink = async_sink::with<basic_file_sink_mt>("logs/async_log.txt", true);
+    auto logger = std::make_shared<spdlog::logger>("async_logger", sink);
+    for (int i = 1; i < 101; ++i) {
+        logger->info("Async message #{}", i);
     }
 }
 
@@ -140,12 +136,10 @@ void async_example()
 // {:p} - don't print the position on each line start.
 // {:n} - don't split the output to lines.
 
-#include "spdlog/fmt/bin_to_hex.h"
-void binary_example()
-{
+#include "spdlog/bin_to_hex.h"
+void binary_example() {
     std::vector<char> buf;
-    for (int i = 0; i < 80; i++)
-    {
+    for (int i = 0; i < 80; i++) {
         buf.push_back(static_cast<char>(i & 0xff));
     }
     spdlog::info("Binary example: {}", spdlog::to_hex(buf));
@@ -154,30 +148,51 @@ void binary_example()
     // logger->info("uppercase: {:X}", spdlog::to_hex(buf));
     // logger->info("uppercase, no delimiters: {:Xs}", spdlog::to_hex(buf));
     // logger->info("uppercase, no delimiters, no position info: {:Xsp}", spdlog::to_hex(buf));
+    // logger->info("hexdump style: {:a}", spdlog::to_hex(buf));
+    // logger->info("hexdump style, 20 chars per line {:a}", spdlog::to_hex(buf, 20));
+}
+
+// Log a vector of numbers
+#include "fmt/ranges.h"
+void vector_example() {
+    std::vector<int> vec = {1, 2, 3};
+    spdlog::info("Vector example: {}", vec);
 }
 
 // Compile time log levels.
 // define SPDLOG_ACTIVE_LEVEL to required level (e.g. SPDLOG_LEVEL_TRACE)
-void trace_example()
-{
-    // trace from default logger
+void trace_example() {
+    // trace from global logger
     SPDLOG_TRACE("Some trace message.. {} ,{}", 1, 3.23);
-    // debug from default logger
+    // debug from global logger
     SPDLOG_DEBUG("Some debug message.. {} ,{}", 1, 3.23);
+}
 
-    // trace from logger object
-    auto logger = spdlog::get("file_logger");
-    SPDLOG_LOGGER_TRACE(logger, "another trace message");
+// stopwatch example
+#include <thread>
+
+#include "spdlog/stopwatch.h"
+void stopwatch_example() {
+    spdlog::stopwatch sw;
+    std::this_thread::sleep_for(std::chrono::milliseconds(123));
+    spdlog::info("Stopwatch: {} seconds", sw);
+}
+
+#include "spdlog/sinks/udp_sink.h"
+void udp_example() {
+    udp_sink_config cfg("127.0.0.1", 11091);
+    auto my_logger = spdlog::create<udp_sink_mt>("udplog", cfg);
+    my_logger->set_level(spdlog::level::debug);
+    my_logger->info("hello world");
 }
 
 // A logger with multiple sinks (stdout and file) - each with a different format and log level.
-void multi_sink_example()
-{
-    auto console_sink = std::make_shared<spdlog::sinks::stdout_color_sink_mt>();
+void multi_sink_example() {
+    auto console_sink = std::make_shared<stdout_color_sink_mt>();
     console_sink->set_level(spdlog::level::warn);
     console_sink->set_pattern("[multi_sink_example] [%^%l%$] %v");
 
-    auto file_sink = std::make_shared<spdlog::sinks::basic_file_sink_mt>("logs/multisink.txt", true);
+    auto file_sink = std::make_shared<basic_file_sink_mt>("logs/multisink.txt", true);
     file_sink->set_level(spdlog::level::trace);
 
     spdlog::logger logger("multi_sink", {console_sink, file_sink});
@@ -186,49 +201,98 @@ void multi_sink_example()
     logger.info("this message should not appear in the console, only in the file");
 }
 
-// User defined types logging by implementing operator<<
-#include "spdlog/fmt/ostr.h" // must be included
-struct my_type
-{
-    int i;
-    template<typename OStream>
-    friend OStream &operator<<(OStream &os, const my_type &c)
-    {
-        return os << "[my_type i=" << c.i << "]";
+// User defined types logging
+struct my_type {
+    int i = 0;
+    explicit my_type(int i)
+        : i(i) {}
+};
+
+template <>
+struct fmt::formatter<my_type> : fmt::formatter<std::string> {
+    auto format(my_type my, format_context &ctx) const -> decltype(ctx.out()) {
+        return fmt::format_to(ctx.out(), "[my_type i={}]", my.i);
     }
 };
 
-void user_defined_example()
-{
-    spdlog::info("user defined type: {}", my_type{14});
-}
+void user_defined_example() { spdlog::info("user defined type: {}", my_type(14)); }
 
 // Custom error handler. Will be triggered on log failure.
-void err_handler_example()
-{
+void err_handler_example() {
     // can be set globally or per logger(logger->set_error_handler(..))
     spdlog::set_error_handler([](const std::string &msg) { printf("*** Custom log error handler: %s ***\n", msg.c_str()); });
 }
 
 // syslog example (linux/osx/freebsd)
 #ifndef _WIN32
-#include "spdlog/sinks/syslog_sink.h"
-void syslog_example()
-{
+    #include "spdlog/sinks/syslog_sink.h"
+void syslog_example() {
     std::string ident = "spdlog-example";
-    auto syslog_logger = spdlog::syslog_logger_mt("syslog", ident, LOG_PID);
+    auto syslog_logger = spdlog::create<syslog_sink_mt>("syslog", ident, LOG_PID);
     syslog_logger->warn("This is warning that will end up in syslog.");
 }
 #endif
 
 // Android example.
 #if defined(__ANDROID__)
-#include "spdlog/sinks/android_sink.h"
-void android_example()
-{
+    #include "spdlog/sinks/android_sink.h"
+void android_example() {
     std::string tag = "spdlog-android";
     auto android_logger = spdlog::android_logger_mt("android", tag);
     android_logger->critical("Use \"adb shell logcat\" to view this message.");
 }
-
 #endif
+
+// Log patterns can contain custom flags.
+// this will add custom flag '%*' which will be bound to a <my_formatter_flag> instance
+#include "spdlog/pattern_formatter.h"
+class my_formatter_flag : public spdlog::custom_flag_formatter {
+public:
+    void format(const spdlog::details::log_msg &, const std::tm &, spdlog::memory_buf_t &dest) override {
+        std::string some_txt = "custom-flag";
+        dest.append(some_txt.data(), some_txt.data() + some_txt.size());
+    }
+
+    [[nodiscard]]
+    std::unique_ptr<custom_flag_formatter> clone() const override {
+        return std::make_unique<my_formatter_flag>();
+    }
+};
+
+void custom_flags_example() {
+    auto formatter = std::make_unique<spdlog::pattern_formatter>();
+    formatter->add_flag<my_formatter_flag>('*').set_pattern("[%n] [%*] [%^%l%$] %v");
+    // set the new formatter using spdlog::set_formatter(formatter) or
+    // logger->set_formatter(formatter) spdlog::set_formatter(std::move(formatter));
+}
+
+void file_events_example() {
+    // pass the spdlog::file_event_handlers to file sinks for open/close log file notifications
+    spdlog::file_event_handlers handlers;
+    handlers.before_open = [](spdlog::filename_t) { spdlog::trace("Before opening logfile"); };
+    handlers.after_open = [](spdlog::filename_t, std::FILE *fstream) {
+        spdlog::trace("After opening logfile");
+        fputs("After opening\n", fstream);
+    };
+    handlers.before_close = [](spdlog::filename_t, std::FILE *fstream) {
+        spdlog::trace("Before closing logfile");
+        fputs("Before closing\n", fstream);
+    };
+    handlers.after_close = [](spdlog::filename_t) { spdlog::trace("After closing logfile"); };
+    auto file_sink = std::make_shared<spdlog::sinks::basic_file_sink_mt>("logs/events-sample.txt", true, handlers);
+    spdlog::logger my_logger("some_logger", file_sink);
+    my_logger.trace("Some log line");
+}
+
+void replace_global_logger_example() {
+    // store the old logger so we don't break other examples.
+    auto old_logger = spdlog::global_logger();
+
+    auto new_logger = spdlog::create<basic_file_sink_mt>("new_global_logger", "logs/new-default-log.txt", true);
+    spdlog::set_global_logger(new_logger);
+    spdlog::set_level(spdlog::level::info);
+    spdlog::debug("This message should not be displayed!");
+    spdlog::set_level(spdlog::level::trace);
+    spdlog::debug("This message should be displayed..");
+    spdlog::set_global_logger(old_logger);
+}

example/meson.build

@@ -1,5 +0,0 @@
-executable('example', 'example.cpp', dependencies: spdlog_dep)
-executable('example_header_only', 'example.cpp', dependencies: spdlog_headeronly_dep)
-run_command(find_program('mkdir'), meson.current_build_dir() + '/logs')
-
-

include/spdlog/async.h

@@ -1,93 +0,0 @@
-// Copyright(c) 2015-present, Gabi Melman & spdlog contributors.
-// Distributed under the MIT License (http://opensource.org/licenses/MIT)
-
-#pragma once
-
-//
-// Async logging using global thread pool
-// All loggers created here share same global thread pool.
-// Each log message is pushed to a queue along withe a shared pointer to the
-// logger.
-// If a logger deleted while having pending messages in the queue, it's actual
-// destruction will defer
-// until all its messages are processed by the thread pool.
-// This is because each message in the queue holds a shared_ptr to the
-// originating logger.
-
-#include "spdlog/async_logger.h"
-#include "spdlog/details/registry.h"
-#include "spdlog/details/thread_pool.h"
-
-#include <memory>
-#include <mutex>
-#include <functional>
-
-namespace spdlog {
-
-namespace details {
-static const size_t default_async_q_size = 8192;
-}
-
-// async logger factory - creates async loggers backed with thread pool.
-// if a global thread pool doesn't already exist, create it with default queue
-// size of 8192 items and single thread.
-template<async_overflow_policy OverflowPolicy = async_overflow_policy::block>
-struct async_factory_impl
-{
-    template<typename Sink, typename... SinkArgs>
-    static std::shared_ptr<async_logger> create(std::string logger_name, SinkArgs &&... args)
-    {
-        auto &registry_inst = details::registry::instance();
-
-        // create global thread pool if not already exists..
-
-        auto &mutex = registry_inst.tp_mutex();
-        std::lock_guard<std::recursive_mutex> tp_lock(mutex);
-        auto tp = registry_inst.get_tp();
-        if (tp == nullptr)
-        {
-            tp = std::make_shared<details::thread_pool>(details::default_async_q_size, 1);
-            registry_inst.set_tp(tp);
-        }
-
-        auto sink = std::make_shared<Sink>(std::forward<SinkArgs>(args)...);
-        auto new_logger = std::make_shared<async_logger>(std::move(logger_name), std::move(sink), std::move(tp), OverflowPolicy);
-        registry_inst.initialize_logger(new_logger);
-        return new_logger;
-    }
-};
-
-using async_factory = async_factory_impl<async_overflow_policy::block>;
-using async_factory_nonblock = async_factory_impl<async_overflow_policy::overrun_oldest>;
-
-template<typename Sink, typename... SinkArgs>
-inline std::shared_ptr<spdlog::logger> create_async(std::string logger_name, SinkArgs &&... sink_args)
-{
-    return async_factory::create<Sink>(std::move(logger_name), std::forward<SinkArgs>(sink_args)...);
-}
-
-template<typename Sink, typename... SinkArgs>
-inline std::shared_ptr<spdlog::logger> create_async_nb(std::string logger_name, SinkArgs &&... sink_args)
-{
-    return async_factory_nonblock::create<Sink>(std::move(logger_name), std::forward<SinkArgs>(sink_args)...);
-}
-
-// set global thread pool.
-inline void init_thread_pool(size_t q_size, size_t thread_count, std::function<void()> on_thread_start)
-{
-    auto tp = std::make_shared<details::thread_pool>(q_size, thread_count, on_thread_start);
-    details::registry::instance().set_tp(std::move(tp));
-}
-
-// set global thread pool.
-inline void init_thread_pool(size_t q_size, size_t thread_count)
-{
-    init_thread_pool(q_size, thread_count, [] {});
-}
-
-// get the global thread pool.
-inline std::shared_ptr<spdlog::details::thread_pool> thread_pool()
-{
-    return details::registry::instance().get_tp();
-}
-} // namespace spdlog

include/spdlog/async_logger-inl.h

@@ -1,92 +0,0 @@
-// Copyright(c) 2015-present, Gabi Melman & spdlog contributors.
-// Distributed under the MIT License (http://opensource.org/licenses/MIT)
-
-#pragma once
-
-#ifndef SPDLOG_HEADER_ONLY
-#include "spdlog/async_logger.h"
-#endif
-
-#include "spdlog/sinks/sink.h"
-#include "spdlog/details/thread_pool.h"
-
-#include <memory>
-#include <string>
-
-SPDLOG_INLINE spdlog::async_logger::async_logger(
-    std::string logger_name, sinks_init_list sinks_list, std::weak_ptr<details::thread_pool> tp, async_overflow_policy overflow_policy)
-    : async_logger(std::move(logger_name), sinks_list.begin(), sinks_list.end(), std::move(tp), overflow_policy)
-{}
-
-SPDLOG_INLINE spdlog::async_logger::async_logger(
-    std::string logger_name, sink_ptr single_sink, std::weak_ptr<details::thread_pool> tp, async_overflow_policy overflow_policy)
-    : async_logger(std::move(logger_name), {std::move(single_sink)}, std::move(tp), overflow_policy)
-{}
-
-// send the log message to the thread pool
-SPDLOG_INLINE void spdlog::async_logger::sink_it_(const details::log_msg &msg)
-{
-    if (auto pool_ptr = thread_pool_.lock())
-    {
-        pool_ptr->post_log(shared_from_this(), msg, overflow_policy_);
-    }
-    else
-    {
-        SPDLOG_THROW(spdlog_ex("async log: thread pool doesn't exist anymore"));
-    }
-}
-
-// send flush request to the thread pool
-SPDLOG_INLINE void spdlog::async_logger::flush_()
-{
-    if (auto pool_ptr = thread_pool_.lock())
-    {
-        pool_ptr->post_flush(shared_from_this(), overflow_policy_);
-    }
-    else
-    {
-        SPDLOG_THROW(spdlog_ex("async flush: thread pool doesn't exist anymore"));
-    }
-}
-
-//
-// backend functions - called from the thread pool to do the actual job
-//
-SPDLOG_INLINE void spdlog::async_logger::backend_sink_it_(const details::log_msg &msg)
-{
-    for (auto &sink : sinks_)
-    {
-        if (sink->should_log(msg.level))
-        {
-            SPDLOG_TRY
-            {
-                sink->log(msg);
-            }
-            SPDLOG_LOGGER_CATCH()
-        }
-    }
-
-    if (should_flush_(msg))
-    {
-        backend_flush_();
-    }
-}
-
-SPDLOG_INLINE void spdlog::async_logger::backend_flush_()
-{
-    for (auto &sink : sinks_)
-    {
-        SPDLOG_TRY
-        {
-            sink->flush();
-        }
-        SPDLOG_LOGGER_CATCH()
-    }
-}
-
-SPDLOG_INLINE std::shared_ptr<spdlog::logger> spdlog::async_logger::clone(std::string new_name)
-{
-    auto cloned = std::make_shared<spdlog::async_logger>(*this);
-    cloned->name_ = std::move(new_name);
-    return cloned;
-}

include/spdlog/async_logger.h

@@ -1,68 +0,0 @@
-// Copyright(c) 2015-present, Gabi Melman & spdlog contributors.
-// Distributed under the MIT License (http://opensource.org/licenses/MIT)
-
-#pragma once
-
-// Fast asynchronous logger.
-// Uses pre allocated queue.
-// Creates a single back thread to pop messages from the queue and log them.
-//
-// Upon each log write the logger:
-//    1. Checks if its log level is enough to log the message
-//    2. Push a new copy of the message to a queue (or block the caller until
-//    space is available in the queue)
-// Upon destruction, logs all remaining messages in the queue before
-// destructing..
-
-#include "spdlog/logger.h"
-
-namespace spdlog {
-
-// Async overflow policy - block by default.
-enum class async_overflow_policy
-{
-    block,         // Block until message can be enqueued
-    overrun_oldest // Discard oldest message in the queue if full when trying to
-                   // add new item.
-};
-
-namespace details {
-class thread_pool;
-}
-
-class async_logger final : public std::enable_shared_from_this<async_logger>, public logger
-{
-    friend class details::thread_pool;
-
-public:
-    template<typename It>
-    async_logger(std::string logger_name, It begin, It end, std::weak_ptr<details::thread_pool> tp,
-        async_overflow_policy overflow_policy = async_overflow_policy::block)
-        : logger(std::move(logger_name), begin, end)
-        , thread_pool_(std::move(tp))
-        , overflow_policy_(overflow_policy)
-    {}
-
-    async_logger(std::string logger_name, sinks_init_list sinks_list, std::weak_ptr<details::thread_pool> tp,
-        async_overflow_policy overflow_policy = async_overflow_policy::block);
-
-    async_logger(std::string logger_name, sink_ptr single_sink, std::weak_ptr<details::thread_pool> tp,
-        async_overflow_policy overflow_policy = async_overflow_policy::block);
-
-    std::shared_ptr<logger> clone(std::string new_name) override;
-
-protected:
-    void sink_it_(const details::log_msg &msg) override;
-    void flush_() override;
-    void backend_sink_it_(const details::log_msg &incoming_log_msg);
-    void backend_flush_();
-
-private:
-    std::weak_ptr<details::thread_pool> thread_pool_;
-    async_overflow_policy overflow_policy_;
-};
-} // namespace spdlog
-
-#ifdef SPDLOG_HEADER_ONLY
-#include "async_logger-inl.h"
-#endif

include/spdlog/bin_to_hex.h

@@ -0,0 +1,204 @@
+//
+// Copyright(c) 2015 Gabi Melman.
+// Distributed under the MIT License (http://opensource.org/licenses/MIT)
+//
+
+#pragma once
+
+#include <cctype>
+
+#include "common.h"
+
+#if defined(__has_include)
+    #if __has_include(<version>)
+        #include <version>
+    #endif
+#endif
+
+#if __cpp_lib_span >= 202002L
+    #include <span>
+#endif
+
+//
+// Support for logging binary data as hex
+// format flags, any combination of the following:
+// {:X} - print in uppercase.
+// {:s} - don't separate each byte with space.
+// {:p} - don't print the position on each line start.
+// {:n} - don't split the output to lines.
+// {:a} - show ASCII if :n is not set
+
+//
+// Examples:
+//
+// std::vector<char> v(200, 0x0b);
+// logger->info("Some buffer {}", spdlog::to_hex(v));
+// char buf[128];
+// logger->info("Some buffer {:X}", spdlog::to_hex(std::begin(buf), std::end(buf)));
+// logger->info("Some buffer {:X}", spdlog::to_hex(std::begin(buf), std::end(buf), 16));
+
+namespace spdlog {
+namespace details {
+
+template <typename It>
+class dump_info {
+public:
+    dump_info(It range_begin, It range_end, size_t size_per_line)
+        : begin_(range_begin),
+          end_(range_end),
+          size_per_line_(size_per_line) {}
+
+    // do not use begin() and end() to avoid collision with fmt/ranges
+    It get_begin() const { return begin_; }
+    It get_end() const { return end_; }
+    [[nodiscard]] size_t size_per_line() const { return size_per_line_; }
+
+private:
+    It begin_, end_;
+    size_t size_per_line_;
+};
+}  // namespace details
+
+// create a dump_info that wraps the given container
+template <typename Container>
+inline details::dump_info<typename Container::const_iterator> to_hex(const Container &container, size_t size_per_line = 32) {
+    static_assert(sizeof(typename Container::value_type) == 1, "sizeof(Container::value_type) != 1");
+    using Iter = typename Container::const_iterator;
+    return details::dump_info<Iter>(std::begin(container), std::end(container), size_per_line);
+}
+
+#if __cpp_lib_span >= 202002L
+
+template <typename Value, size_t Extent>
+inline details::dump_info<typename std::span<Value, Extent>::iterator> to_hex(const std::span<Value, Extent> &container,
+                                                                              size_t size_per_line = 32) {
+    using Container = std::span<Value, Extent>;
+    static_assert(sizeof(typename Container::value_type) == 1, "sizeof(Container::value_type) != 1");
+    using Iter = typename Container::iterator;
+    return details::dump_info<Iter>(std::begin(container), std::end(container), size_per_line);
+}
+
+#endif
+
+// create dump_info from ranges
+template <typename It>
+inline details::dump_info<It> to_hex(const It range_begin, const It range_end, size_t size_per_line = 32) {
+    return details::dump_info<It>(range_begin, range_end, size_per_line);
+}
+
+}  // namespace spdlog
+
+template <typename T>
+struct fmt::formatter<spdlog::details::dump_info<T>, char> {
+    char delimiter = ' ';
+    bool put_newlines = true;
+    bool put_delimiters = true;
+    bool use_uppercase = false;
+    bool put_positions = true;  // position on start of each line
+    bool show_ascii = false;
+
+    // parse the format string flags
+    template <typename ParseContext>
+    constexpr auto parse(ParseContext &ctx) -> decltype(ctx.begin()) {
+        auto it = ctx.begin();
+        while (it != ctx.end() && *it != '}') {
+            switch (*it) {
+                case 'X':
+                    use_uppercase = true;
+                    break;
+                case 's':
+                    put_delimiters = false;
+                    break;
+                case 'p':
+                    put_positions = false;
+                    break;
+                case 'n':
+                    put_newlines = false;
+                    show_ascii = false;
+                    break;
+                case 'a':
+                    if (put_newlines) {
+                        show_ascii = true;
+                    }
+                    break;
+                default:;
+            }
+
+            ++it;
+        }
+        return it;
+    }
+
+    // format the given bytes range as hex
+    template <typename FormatContext, typename Container>
+    auto format(const spdlog::details::dump_info<Container> &the_range, FormatContext &ctx) const -> decltype(ctx.out()) {
+        constexpr const char *hex_upper = "0123456789ABCDEF";
+        constexpr const char *hex_lower = "0123456789abcdef";
+        const char *hex_chars = use_uppercase ? hex_upper : hex_lower;
+        auto inserter = ctx.out();
+        int size_per_line = static_cast<int>(the_range.size_per_line());
+        auto start_of_line = the_range.get_begin();
+        for (auto i = the_range.get_begin(); i != the_range.get_end(); ++i) {
+            auto ch = static_cast<unsigned char>(*i);
+
+            if (put_newlines && (i == the_range.get_begin() || i - start_of_line >= size_per_line)) {
+                if (show_ascii && i != the_range.get_begin()) {
+                    *inserter++ = delimiter;
+                    *inserter++ = delimiter;
+                    for (auto j = start_of_line; j < i; ++j) {
+                        auto pc = static_cast<unsigned char>(*j);
+                        *inserter++ = std::isprint(pc) ? static_cast<char>(*j) : '.';
+                    }
+                }
+
+                put_newline(inserter, static_cast<size_t>(i - the_range.get_begin()));
+
+                // put first byte without delimiter in front of it
+                *inserter++ = hex_chars[(ch >> 4) & 0x0f];
+                *inserter++ = hex_chars[ch & 0x0f];
+                start_of_line = i;
+                continue;
+            }
+
+            if (put_delimiters && i != the_range.get_begin()) {
+                *inserter++ = delimiter;
+            }
+
+            *inserter++ = hex_chars[(ch >> 4) & 0x0f];
+            *inserter++ = hex_chars[ch & 0x0f];
+        }
+        if (show_ascii)  // add ascii to last line
+        {
+            if (the_range.get_end() - the_range.get_begin() > size_per_line) {
+                auto blank_num = size_per_line - (the_range.get_end() - start_of_line);
+                while (blank_num-- > 0) {
+                    *inserter++ = delimiter;
+                    *inserter++ = delimiter;
+                    if (put_delimiters) {
+                        *inserter++ = delimiter;
+                    }
+                }
+            }
+            *inserter++ = delimiter;
+            *inserter++ = delimiter;
+            for (auto j = start_of_line; j != the_range.get_end(); ++j) {
+                auto pc = static_cast<unsigned char>(*j);
+                *inserter++ = std::isprint(pc) ? static_cast<char>(*j) : '.';
+            }
+        }
+        return inserter;
+    }
+
+    // put newline(and position header)
+    template <typename It>
+    void put_newline(It inserter, std::size_t pos) const {
+#ifdef _WIN32
+        *inserter++ = '\r';
+#endif
+        *inserter++ = '\n';
+
+        if (put_positions) {
+            spdlog::fmt_lib::format_to(inserter, SPDLOG_FMT_STRING("{:04X}: "), pos);
+        }
+    }
+};  // namespace fmt

include/spdlog/common-inl.h

@@ -1,57 +0,0 @@
-// Copyright(c) 2015-present, Gabi Melman & spdlog contributors.
-// Distributed under the MIT License (http://opensource.org/licenses/MIT)
-
-#pragma once
-
-#ifndef SPDLOG_HEADER_ONLY
-#include "spdlog/common.h"
-#endif
-
-namespace spdlog {
-namespace level {
-static string_view_t level_string_views[] SPDLOG_LEVEL_NAMES;
-
-static const char *short_level_names[] SPDLOG_SHORT_LEVEL_NAMES;
-
-SPDLOG_INLINE string_view_t &to_string_view(spdlog::level::level_enum l) SPDLOG_NOEXCEPT
-{
-    return level_string_views[l];
-}
-
-SPDLOG_INLINE const char *to_short_c_str(spdlog::level::level_enum l) SPDLOG_NOEXCEPT
-{
-    return short_level_names[l];
-}
-
-SPDLOG_INLINE spdlog::level::level_enum from_str(const std::string &name) SPDLOG_NOEXCEPT
-{
-    int level = 0;
-    for (const auto &level_str : level_string_views)
-    {
-        if (level_str == name)
-        {
-            return static_cast<level::level_enum>(level);
-        }
-        level++;
-    }
-    return level::off;
-}
-} // namespace level
-
-SPDLOG_INLINE spdlog_ex::spdlog_ex(std::string msg)
-    : msg_(std::move(msg))
-{}
-
-SPDLOG_INLINE spdlog_ex::spdlog_ex(const std::string &msg, int last_errno)
-{
-    memory_buf_t outbuf;
-    fmt::format_system_error(outbuf, last_errno, msg);
-    msg_ = fmt::to_string(outbuf);
-}
-
-SPDLOG_INLINE const char *spdlog_ex::what() const SPDLOG_NOEXCEPT
-{
-    return msg_.c_str();
-}
-
-} // namespace spdlog

include/spdlog/common.h

@@ -3,81 +3,42 @@
 
 #pragma once
 
-#include "spdlog/tweakme.h"
-#include "spdlog/details/null_mutex.h"
-
+#include <array>
 #include <atomic>
 #include <chrono>
+#include <cstdint>
+#include <exception>
+#include <functional>
 #include <initializer_list>
 #include <memory>
-#include <exception>
 #include <string>
-#include <type_traits>
-#include <functional>
+#include <string_view>
 
-#ifdef _WIN32
-#ifndef NOMINMAX
-#define NOMINMAX // prevent windows redefining min/max
-#endif
+#include "./source_loc.h"
+#include "fmt/base.h"
+#include "fmt/xchar.h"
 
-#ifndef WIN32_LEAN_AND_MEAN
-#define WIN32_LEAN_AND_MEAN
-#endif
-
-#include <windows.h>
-#endif //_WIN32
-
-#ifdef SPDLOG_COMPILED_LIB
-#undef SPDLOG_HEADER_ONLY
-#define SPDLOG_INLINE
+// Define SPDLOG_API according to current build settings
+#ifndef SPDLOG_SHARED_LIB
+    #define SPDLOG_API
+#elif defined(_WIN32)
+    #ifdef spdlog_EXPORTS
+        #define SPDLOG_API __declspec(dllexport) // Export symbols when building the library
+    #else
+        #define SPDLOG_API __declspec(dllimport) // Import symbols when using the library
+    #endif
+#elif (defined(__GNUC__) || defined(__clang__))
+    #define SPDLOG_API __attribute__((visibility("default"))) // Export symbols for shared libraries
 #else
-#define SPDLOG_HEADER_ONLY
-#define SPDLOG_INLINE inline
+    #define SPDLOG_API
 #endif
+// End of SPDLOG_API definition
 
-#include "spdlog/fmt/fmt.h"
-
-// visual studio upto 2013 does not support noexcept nor constexpr
-#if defined(_MSC_VER) && (_MSC_VER < 1900)
-#define SPDLOG_NOEXCEPT _NOEXCEPT
-#define SPDLOG_CONSTEXPR
-#else
-#define SPDLOG_NOEXCEPT noexcept
-#define SPDLOG_CONSTEXPR constexpr
-#endif
-
-#if defined(__GNUC__) || defined(__clang__)
-#define SPDLOG_DEPRECATED __attribute__((deprecated))
-#elif defined(_MSC_VER)
-#define SPDLOG_DEPRECATED __declspec(deprecated)
-#else
-#define SPDLOG_DEPRECATED
-#endif
-
-// disable thread local on msvc 2013
-#ifndef SPDLOG_NO_TLS
-#if (defined(_MSC_VER) && (_MSC_VER < 1900)) || defined(__cplusplus_winrt)
-#define SPDLOG_NO_TLS 1
-#endif
-#endif
+#define SPDLOG_FMT_RUNTIME(format_string) fmt::runtime(format_string)
+#define SPDLOG_FMT_STRING(format_string) FMT_STRING(format_string)
 
 #ifndef SPDLOG_FUNCTION
-#define SPDLOG_FUNCTION __FUNCTION__
-#endif
-
-#ifdef SPDLOG_NO_EXCEPTIONS
-#define SPDLOG_TRY
-#define SPDLOG_THROW(ex)                                                                                                                   \
-    do                                                                                                                                     \
-    {                                                                                                                                      \
-        printf("spdlog fatal error: %s\n", ex.what());                                                                                     \
-        std::abort();                                                                                                                      \
-    } while (0)
-#define SPDLOG_CATCH_ALL()
-#else
-#define SPDLOG_TRY try
-#define SPDLOG_THROW(ex) throw(ex)
-#define SPDLOG_CATCH_ALL() catch (...)
+    #define SPDLOG_FUNCTION static_cast<const char *>(__FUNCTION__)
 #endif
 
 namespace spdlog {
@@ -88,41 +49,19 @@ namespace sinks {
 class sink;
 }
 
-#if defined(_WIN32) && defined(SPDLOG_WCHAR_FILENAMES)
-using filename_t = std::wstring;
-#define SPDLOG_FILENAME_T(s) L##s
-#else
-using filename_t = std::string;
-#define SPDLOG_FILENAME_T(s) s
-#endif
-
 using log_clock = std::chrono::system_clock;
 using sink_ptr = std::shared_ptr<sinks::sink>;
 using sinks_init_list = std::initializer_list<sink_ptr>;
 using err_handler = std::function<void(const std::string &err_msg)>;
-using string_view_t = fmt::basic_string_view<char>;
-using wstring_view_t = fmt::basic_string_view<wchar_t>;
+using string_view_t = std::basic_string_view<char>;
+using wstring_view_t = std::basic_string_view<wchar_t>;
+
+namespace fmt_lib = fmt;
 using memory_buf_t = fmt::basic_memory_buffer<char, 250>;
+using wmemory_buf_t = fmt::basic_memory_buffer<wchar_t, 250>;
 
-#ifdef SPDLOG_WCHAR_TO_UTF8_SUPPORT
-#ifndef _WIN32
-#error SPDLOG_WCHAR_TO_UTF8_SUPPORT only supported on windows
-#else
-template<typename T>
-struct is_convertible_to_wstring_view : std::is_convertible<T, wstring_view_t>
-{};
-#endif // _WIN32
-#else
-template<typename>
-struct is_convertible_to_wstring_view : std::false_type
-{};
-#endif // SPDLOG_WCHAR_TO_UTF8_SUPPORT
-
-#if defined(SPDLOG_NO_ATOMIC_LEVELS)
-using level_t = details::null_atomic_int;
-#else
-using level_t = std::atomic<int>;
-#endif
+template <typename... Args>
+using format_string_t = fmt::format_string<Args...>;
 
 #define SPDLOG_LEVEL_TRACE 0
 #define SPDLOG_LEVEL_DEBUG 1
@@ -133,13 +72,11 @@ using level_t = std::atomic<int>;
 #define SPDLOG_LEVEL_OFF 6
 
 #if !defined(SPDLOG_ACTIVE_LEVEL)
-#define SPDLOG_ACTIVE_LEVEL SPDLOG_LEVEL_INFO
+    #define SPDLOG_ACTIVE_LEVEL SPDLOG_LEVEL_INFO
 #endif
 
 // Log level enum
-namespace level {
-enum level_enum
-{
+enum class level : std::uint8_t {
     trace = SPDLOG_LEVEL_TRACE,
     debug = SPDLOG_LEVEL_DEBUG,
     info = SPDLOG_LEVEL_INFO,
@@ -147,99 +84,58 @@ enum level_enum
     err = SPDLOG_LEVEL_ERROR,
     critical = SPDLOG_LEVEL_CRITICAL,
     off = SPDLOG_LEVEL_OFF,
+    n_levels = SPDLOG_LEVEL_OFF + 1
 };
 
-#if !defined(SPDLOG_LEVEL_NAMES)
-#define SPDLOG_LEVEL_NAMES                                                                                                                 \
-    {                                                                                                                                      \
-        "trace", "debug", "info", "warning", "error", "critical", "off"                                                                    \
-    }
-#endif
+using atomic_level_t = std::atomic<level>;
 
-#if !defined(SPDLOG_SHORT_LEVEL_NAMES)
+[[nodiscard]] constexpr size_t level_to_number(level lvl) noexcept { return static_cast<size_t>(lvl); }
 
-#define SPDLOG_SHORT_LEVEL_NAMES                                                                                                           \
-    {                                                                                                                                      \
-        "T", "D", "I", "W", "E", "C", "O"                                                                                                  \
-    }
-#endif
+constexpr auto levels_count = level_to_number(level::n_levels);
+constexpr std::array<std::string_view, levels_count> level_string_views{"trace", "debug",    "info", "warning",
+                                                                        "error", "critical", "off"};
+constexpr std::array<std::string_view, levels_count> short_level_names{"T", "D", "I", "W", "E", "C", "O"};
 
-string_view_t &to_string_view(spdlog::level::level_enum l) SPDLOG_NOEXCEPT;
-const char *to_short_c_str(spdlog::level::level_enum l) SPDLOG_NOEXCEPT;
-spdlog::level::level_enum from_str(const std::string &name) SPDLOG_NOEXCEPT;
+[[nodiscard]] constexpr std::string_view to_string_view(spdlog::level lvl) noexcept {
+    return level_string_views.at(level_to_number(lvl));
+}
 
-using level_hasher = std::hash<int>;
-} // namespace level
+[[nodiscard]] constexpr std::string_view to_short_string_view(spdlog::level lvl) noexcept {
+    return short_level_names.at(level_to_number(lvl));
+}
+
+[[nodiscard]] SPDLOG_API spdlog::level level_from_str(const std::string &name) noexcept;
 
 //
 // Color mode used by sinks with color support.
 //
-enum class color_mode
-{
-    always,
-    automatic,
-    never
-};
+enum class color_mode { always, automatic, never };
 
 //
 // Pattern time - specific time getting to use for pattern_formatter.
 // local time by default
 //
-enum class pattern_time_type
-{
-    local, // log localtime
-    utc    // log utc
+enum class pattern_time_type {
+    local,  // log localtime
+    utc     // log utc
 };
 
 //
 // Log exception
 //
-class spdlog_ex : public std::exception
-{
+class SPDLOG_API spdlog_ex : public std::exception {
 public:
     explicit spdlog_ex(std::string msg);
+
     spdlog_ex(const std::string &msg, int last_errno);
-    const char *what() const SPDLOG_NOEXCEPT override;
+
+    [[nodiscard]] const char *what() const noexcept override;
 
 private:
     std::string msg_;
 };
 
-struct source_loc
-{
-    SPDLOG_CONSTEXPR source_loc() = default;
-    SPDLOG_CONSTEXPR source_loc(const char *filename_in, int line_in, const char *funcname_in)
-        : filename{filename_in}
-        , line{line_in}
-        , funcname{funcname_in}
-    {}
+[[noreturn]] SPDLOG_API void throw_spdlog_ex(const std::string &msg, int last_errno);
+[[noreturn]] SPDLOG_API void throw_spdlog_ex(std::string msg);
 
-    SPDLOG_CONSTEXPR bool empty() const SPDLOG_NOEXCEPT
-    {
-        return line == 0;
-    }
-    const char *filename{nullptr};
-    int line{0};
-    const char *funcname{nullptr};
-};
-
-namespace details {
-// make_unique support for pre c++14
-
-#if __cplusplus >= 201402L // C++14 and beyond
-using std::make_unique;
-#else
-template<typename T, typename... Args>
-std::unique_ptr<T> make_unique(Args &&... args)
-{
-    static_assert(!std::is_array<T>::value, "arrays not supported");
-    return std::unique_ptr<T>(new T(std::forward<Args>(args)...));
-}
-#endif
-} // namespace details
-
-} // namespace spdlog
-
-#ifdef SPDLOG_HEADER_ONLY
-#include "common-inl.h"
-#endif
+}  // namespace spdlog

include/spdlog/details/async_log_msg.h

@@ -0,0 +1,35 @@
+// Copyright(c) 2015-present, Gabi Melman & spdlog contributors.
+// Distributed under the MIT License (http://opensource.org/licenses/MIT)
+
+#pragma once
+
+#include <cstdint>
+
+#include "./log_msg.h"
+
+namespace spdlog {
+namespace details {
+
+// Extend log_msg with internal buffer to store its payload.
+// This is needed since log_msg holds string_views that points to stack data.
+class SPDLOG_API async_log_msg : public log_msg {
+public:
+    enum class type : std::uint8_t { log, flush, terminate };
+    async_log_msg() = default;
+    explicit async_log_msg(type type);
+    async_log_msg(type type, const log_msg &orig_msg);
+    ~async_log_msg() = default;
+    async_log_msg(const async_log_msg &other);
+    async_log_msg(async_log_msg &&other) noexcept;
+    async_log_msg &operator=(const async_log_msg &other);
+    async_log_msg &operator=(async_log_msg &&other) noexcept;
+    [[nodiscard]] type message_type() const { return msg_type_; }
+
+private:
+    type msg_type_{type::log};
+    memory_buf_t buffer_;
+    void update_string_views();
+};
+
+}  // namespace details
+}  // namespace spdlog

include/spdlog/details/backtracer-inl.h

@@ -1,74 +0,0 @@
-// Copyright(c) 2015-present, Gabi Melman & spdlog contributors.
-// Distributed under the MIT License (http://opensource.org/licenses/MIT)
-
-#pragma once
-
-#ifndef SPDLOG_HEADER_ONLY
-#include "spdlog/details/backtracer.h"
-#endif
-namespace spdlog {
-namespace details {
-SPDLOG_INLINE backtracer::backtracer(const backtracer &other)
-{
-    std::lock_guard<std::mutex> lock(other.mutex_);
-    enabled_ = other.enabled();
-    messages_ = other.messages_;
-}
-
-SPDLOG_INLINE backtracer::backtracer(backtracer &&other) SPDLOG_NOEXCEPT
-{
-    std::lock_guard<std::mutex> lock(other.mutex_);
-    enabled_ = other.enabled();
-    messages_ = std::move(other.messages_);
-}
-
-SPDLOG_INLINE backtracer &backtracer::operator=(backtracer other)
-{
-    std::lock_guard<std::mutex> lock(mutex_);
-    enabled_ = other.enabled();
-    messages_ = other.messages_;
-    return *this;
-}
-
-SPDLOG_INLINE void backtracer::enable(size_t size)
-{
-    std::lock_guard<std::mutex> lock{mutex_};
-    enabled_.store(true, std::memory_order_relaxed);
-    messages_ = circular_q<log_msg_buffer>{size};
-}
-
-SPDLOG_INLINE void backtracer::disable()
-{
-    std::lock_guard<std::mutex> lock{mutex_};
-    enabled_.store(false, std::memory_order_relaxed);
-}
-
-SPDLOG_INLINE bool backtracer::enabled() const
-{
-    return enabled_.load(std::memory_order_relaxed);
-}
-
-SPDLOG_INLINE backtracer::operator bool() const
-{
-    return enabled();
-}
-
-SPDLOG_INLINE void backtracer::push_back(const log_msg &msg)
-{
-    std::lock_guard<std::mutex> lock{mutex_};
-    messages_.push_back(log_msg_buffer{msg});
-}
-
-// pop all items in the q and apply the given fun on each of them.
-SPDLOG_INLINE void backtracer::foreach_pop(std::function<void(const details::log_msg &)> fun)
-{
-    std::lock_guard<std::mutex> lock{mutex_};
-    while (!messages_.empty())
-    {
-        auto &front_msg = messages_.front();
-        fun(front_msg);
-        messages_.pop_front();
-    }
-}
-} // namespace details
-} // namespace spdlog

include/spdlog/details/backtracer.h

@@ -1,46 +0,0 @@
-// Copyright(c) 2015-present, Gabi Melman & spdlog contributors.
-// Distributed under the MIT License (http://opensource.org/licenses/MIT)
-
-#pragma once
-
-#include "spdlog/details/log_msg_buffer.h"
-#include "spdlog/details/circular_q.h"
-
-#include <atomic>
-#include <mutex>
-#include <functional>
-
-// Store log messages in circular buffer.
-// Useful for storing debug data in case of error/warning happens.
-
-namespace spdlog {
-namespace details {
-class backtracer
-{
-    mutable std::mutex mutex_;
-    std::atomic<bool> enabled_{false};
-    circular_q<log_msg_buffer> messages_;
-
-public:
-    backtracer() = default;
-    backtracer(const backtracer &other);
-
-    backtracer(backtracer &&other) SPDLOG_NOEXCEPT;
-    backtracer &operator=(backtracer other);
-
-    void enable(size_t size);
-    void disable();
-    bool enabled() const;
-    explicit operator bool() const;
-    void push_back(const log_msg &msg);
-
-    // pop all items in the q and apply the given fun on each of them.
-    void foreach_pop(std::function<void(const details::log_msg &)> fun);
-};
-
-} // namespace details
-} // namespace spdlog
-
-#ifdef SPDLOG_HEADER_ONLY
-#include "backtracer-inl.h"
-#endif

include/spdlog/details/circular_q.h

@@ -1,16 +1,16 @@
 // Copyright(c) 2015-present, Gabi Melman & spdlog contributors.
 // Distributed under the MIT License (http://opensource.org/licenses/MIT)
 
-// cirucal q view of std::vector.
+// circular q view of std::vector.
 #pragma once
 
+#include <cassert>
 #include <vector>
 
 namespace spdlog {
 namespace details {
-template<typename T>
-class circular_q
-{
+template <typename T>
+class circular_q {
     size_t max_items_ = 0;
     typename std::vector<T>::size_type head_ = 0;
     typename std::vector<T>::size_type tail_ = 0;
@@ -24,35 +24,29 @@ public:
     circular_q() = default;
 
     explicit circular_q(size_t max_items)
-        : max_items_(max_items + 1) // one item is reserved as marker for full q
-        , v_(max_items_)
-    {}
+        : max_items_(max_items + 1)  // one item is reserved as marker for full q
+          ,
+          v_(max_items_) {}
 
     circular_q(const circular_q &) = default;
     circular_q &operator=(const circular_q &) = default;
 
     // move cannot be default,
-    // since we need to reset head_, tail_, etc to zero in the moved object
-    circular_q(circular_q &&other) SPDLOG_NOEXCEPT
-    {
-        copy_moveable(std::move(other));
-    }
+    // since we need to reset head_, tail_, etc. to zero in the moved object
+    circular_q(circular_q &&other) noexcept { copy_moveable(std::move(other)); }
 
-    circular_q &operator=(circular_q &&other) SPDLOG_NOEXCEPT
-    {
+    circular_q &operator=(circular_q &&other) noexcept {
         copy_moveable(std::move(other));
         return *this;
     }
 
     // push back, overrun (oldest) item if no room left
-    void push_back(T &&item)
-    {
-        if (max_items_ > 0)
-        {
+    void push_back(T &&item) {
+        if (max_items_ > 0) {
             v_[tail_] = std::move(item);
             tail_ = (tail_ + 1) % max_items_;
 
-            if (tail_ == head_) // overrun last item if full
+            if (tail_ == head_)  // overrun last item if full
             {
                 head_ = (head_ + 1) % max_items_;
                 ++overrun_counter_;
@@ -60,49 +54,55 @@ public:
         }
     }
 
+    // Return const reference to the front item.
+    // If there are no elements in the container, the behavior is undefined.
+    [[nodiscard]] const T &front() const { return v_[head_]; }
+
     // Return reference to the front item.
     // If there are no elements in the container, the behavior is undefined.
-    const T &front() const
-    {
-        return v_[head_];
+    [[nodiscard]] T &front() { return v_[head_]; }
+
+    // Return number of elements actually stored
+    [[nodiscard]] size_t size() const {
+        if (tail_ >= head_) {
+            return tail_ - head_;
+        } else {
+            return max_items_ - (head_ - tail_);
+        }
     }
 
-    T &front()
-    {
-        return v_[head_];
+    // Return const reference to item by index.
+    // If index is out of range 0…size()-1, the behavior is undefined.
+    const T &operator[](size_t idx) const {
+        assert(idx < size());
+        assert(max_items_ > 0);
+        return v_[(head_ + idx) % max_items_];
     }
 
-    // Pop item from front.
-    // If there are no elements in the container, the behavior is undefined.
-    void pop_front()
-    {
-        head_ = (head_ + 1) % max_items_;
+    // Pop item from front if not empty.
+    void pop_front() {
+        if (!empty()) {
+            head_ = (head_ + 1) % max_items_;
+        }
     }
 
-    bool empty() const
-    {
-        return tail_ == head_;
-    }
+    [[nodiscard]] bool empty() const { return tail_ == head_; }
 
-    bool full() const
-    {
+    [[nodiscard]] bool full() const {
         // head is ahead of the tail by 1
-        if (max_items_ > 0)
-        {
+        if (max_items_ > 0) {
             return ((tail_ + 1) % max_items_) == head_;
         }
-        return false;
+        return true;
     }
 
-    size_t overrun_counter() const
-    {
-        return overrun_counter_;
-    }
+    [[nodiscard]] size_t overrun_counter() const { return overrun_counter_; }
+
+    void reset_overrun_counter() { overrun_counter_ = 0; }
 
 private:
     // copy from other&& and reset it to disabled state
-    void copy_moveable(circular_q &&other) SPDLOG_NOEXCEPT
-    {
+    void copy_moveable(circular_q &&other) noexcept {
         max_items_ = other.max_items_;
         head_ = other.head_;
         tail_ = other.tail_;
@@ -115,5 +115,5 @@ private:
         other.overrun_counter_ = 0;
     }
 };
-} // namespace details
-} // namespace spdlog
+}  // namespace details
+}  // namespace spdlog

include/spdlog/details/console_globals.h

@@ -1,32 +0,0 @@
-// Copyright(c) 2015-present, Gabi Melman & spdlog contributors.
-// Distributed under the MIT License (http://opensource.org/licenses/MIT)
-
-#pragma once
-
-#include "spdlog/details/null_mutex.h"
-#include <mutex>
-
-namespace spdlog {
-namespace details {
-
-struct console_mutex
-{
-    using mutex_t = std::mutex;
-    static mutex_t &mutex()
-    {
-        static mutex_t s_mutex;
-        return s_mutex;
-    }
-};
-
-struct console_nullmutex
-{
-    using mutex_t = null_mutex;
-    static mutex_t &mutex()
-    {
-        static mutex_t s_mutex;
-        return s_mutex;
-    }
-};
-} // namespace details
-} // namespace spdlog

include/spdlog/details/err_helper.h

@@ -0,0 +1,31 @@
+// Copyright(c) 2015-present, Gabi Melman & spdlog contributors.
+// Distributed under the MIT License (http://opensource.org/licenses/MIT)
+
+#pragma once
+
+#include <chrono>
+#include <exception>
+#include <mutex>
+#include <string>
+
+#include "spdlog/common.h"
+
+// by default, prints the error to stderr, at max rate of 1/sec thread safe
+namespace spdlog {
+namespace details {
+class SPDLOG_API err_helper {
+    err_handler custom_err_handler_;
+    std::chrono::steady_clock::time_point last_report_time_;
+    mutable std::mutex mutex_;
+
+public:
+    err_helper() = default;
+    ~err_helper() = default;
+    err_helper(const err_helper& other);
+    err_helper(err_helper&& other) noexcept;
+    void handle_ex(const std::string& origin, const source_loc& loc, const std::exception& ex) noexcept;
+    void handle_unknown_ex(const std::string& origin, const source_loc& loc) noexcept;
+    void set_err_handler(err_handler handler);
+};
+}  // namespace details
+}  // namespace spdlog

include/spdlog/details/file_helper-inl.h

@@ -1,133 +0,0 @@
-// Copyright(c) 2015-present, Gabi Melman & spdlog contributors.
-// Distributed under the MIT License (http://opensource.org/licenses/MIT)
-
-#pragma once
-
-#ifndef SPDLOG_HEADER_ONLY
-#include "spdlog/details/file_helper.h"
-#endif
-
-#include "spdlog/details/os.h"
-#include "spdlog/common.h"
-
-#include <cerrno>
-#include <chrono>
-#include <cstdio>
-#include <string>
-#include <thread>
-#include <tuple>
-
-namespace spdlog {
-namespace details {
-
-SPDLOG_INLINE file_helper::~file_helper()
-{
-    close();
-}
-
-SPDLOG_INLINE void file_helper::open(const filename_t &fname, bool truncate)
-{
-    close();
-    auto *mode = truncate ? SPDLOG_FILENAME_T("wb") : SPDLOG_FILENAME_T("ab");
-    _filename = fname;
-    for (int tries = 0; tries < open_tries; ++tries)
-    {
-        if (!os::fopen_s(&fd_, fname, mode))
-        {
-            return;
-        }
-
-        details::os::sleep_for_millis(open_interval);
-    }
-
-    SPDLOG_THROW(spdlog_ex("Failed opening file " + os::filename_to_str(_filename) + " for writing", errno));
-}
-
-SPDLOG_INLINE void file_helper::reopen(bool truncate)
-{
-    if (_filename.empty())
-    {
-        SPDLOG_THROW(spdlog_ex("Failed re opening file - was not opened before"));
-    }
-    open(_filename, truncate);
-}
-
-SPDLOG_INLINE void file_helper::flush()
-{
-    std::fflush(fd_);
-}
-
-SPDLOG_INLINE void file_helper::close()
-{
-    if (fd_ != nullptr)
-    {
-        std::fclose(fd_);
-        fd_ = nullptr;
-    }
-}
-
-SPDLOG_INLINE void file_helper::write(const memory_buf_t &buf)
-{
-    size_t msg_size = buf.size();
-    auto data = buf.data();
-    if (std::fwrite(data, 1, msg_size, fd_) != msg_size)
-    {
-        SPDLOG_THROW(spdlog_ex("Failed writing to file " + os::filename_to_str(_filename), errno));
-    }
-}
-
-SPDLOG_INLINE size_t file_helper::size() const
-{
-    if (fd_ == nullptr)
-    {
-        SPDLOG_THROW(spdlog_ex("Cannot use size() on closed file " + os::filename_to_str(_filename)));
-    }
-    return os::filesize(fd_);
-}
-
-SPDLOG_INLINE const filename_t &file_helper::filename() const
-{
-    return _filename;
-}
-
-SPDLOG_INLINE bool file_helper::file_exists(const filename_t &fname)
-{
-    return os::file_exists(fname);
-}
-
-//
-// return file path and its extension:
-//
-// "mylog.txt" => ("mylog", ".txt")
-// "mylog" => ("mylog", "")
-// "mylog." => ("mylog.", "")
-// "/dir1/dir2/mylog.txt" => ("/dir1/dir2/mylog", ".txt")
-//
-// the starting dot in filenames is ignored (hidden files):
-//
-// ".mylog" => (".mylog". "")
-// "my_folder/.mylog" => ("my_folder/.mylog", "")
-// "my_folder/.mylog.txt" => ("my_folder/.mylog", ".txt")
-SPDLOG_INLINE std::tuple<filename_t, filename_t> file_helper::split_by_extension(const filename_t &fname)
-{
-    auto ext_index = fname.rfind('.');
-
-    // no valid extension found - return whole path and empty string as
-    // extension
-    if (ext_index == filename_t::npos || ext_index == 0 || ext_index == fname.size() - 1)
-    {
-        return std::make_tuple(fname, filename_t());
-    }
-
-    // treat casese like "/etc/rc.d/somelogfile or "/abc/.hiddenfile"
-    auto folder_index = fname.rfind(details::os::folder_sep);
-    if (folder_index != filename_t::npos && folder_index >= ext_index - 1)
-    {
-        return std::make_tuple(fname, filename_t());
-    }
-
-    // finally - return a valid base and extension tuple
-    return std::make_tuple(fname.substr(0, ext_index), fname.substr(ext_index));
-}
-} // namespace details
-} // namespace spdlog

include/spdlog/details/file_helper.h

@@ -3,9 +3,11 @@
 
 #pragma once
 
-#include "spdlog/common.h"
 #include <tuple>
 
+#include "../common.h"
+#include "../file_event_handlers.h"
+
 namespace spdlog {
 namespace details {
 
@@ -13,10 +15,10 @@ namespace details {
 // When failing to open a file, retry several times(5) with a delay interval(10 ms).
 // Throw spdlog_ex exception on errors.
 
-class file_helper
-{
+class SPDLOG_API file_helper {
 public:
-    explicit file_helper() = default;
+    file_helper() = default;
+    explicit file_helper(file_event_handlers event_handlers);
 
     file_helper(const file_helper &) = delete;
     file_helper &operator=(const file_helper &) = delete;
@@ -24,37 +26,19 @@ public:
 
     void open(const filename_t &fname, bool truncate = false);
     void reopen(bool truncate);
-    void flush();
+    void flush() const;
+    void sync() const;
     void close();
-    void write(const memory_buf_t &buf);
+    void write(const memory_buf_t &buf) const;
     size_t size() const;
     const filename_t &filename() const;
-    static bool file_exists(const filename_t &fname);
-
-    //
-    // return file path and its extension:
-    //
-    // "mylog.txt" => ("mylog", ".txt")
-    // "mylog" => ("mylog", "")
-    // "mylog." => ("mylog.", "")
-    // "/dir1/dir2/mylog.txt" => ("/dir1/dir2/mylog", ".txt")
-    //
-    // the starting dot in filenames is ignored (hidden files):
-    //
-    // ".mylog" => (".mylog". "")
-    // "my_folder/.mylog" => ("my_folder/.mylog", "")
-    // "my_folder/.mylog.txt" => ("my_folder/.mylog", ".txt")
-    static std::tuple<filename_t, filename_t> split_by_extension(const filename_t &fname);
 
 private:
-    const int open_tries = 5;
-    const int open_interval = 10;
+    const int open_tries_ = 5;
+    const unsigned int open_interval_ = 10;
     std::FILE *fd_{nullptr};
-    filename_t _filename;
+    filename_t filename_;
+    file_event_handlers event_handlers_;
 };
-} // namespace details
-} // namespace spdlog
-
-#ifdef SPDLOG_HEADER_ONLY
-#include "file_helper-inl.h"
-#endif
+}  // namespace details
+}  // namespace spdlog

include/spdlog/details/fmt_helper.h

@@ -3,102 +3,107 @@
 #pragma once
 
 #include <chrono>
+#include <iterator>
 #include <type_traits>
-#include "spdlog/fmt/fmt.h"
-#include "spdlog/common.h"
+
+#include "../common.h"
 
 // Some fmt helpers to efficiently format and pad ints and strings
 namespace spdlog {
 namespace details {
 namespace fmt_helper {
 
-inline spdlog::string_view_t to_string_view(const memory_buf_t &buf) SPDLOG_NOEXCEPT
-{
-    return spdlog::string_view_t{buf.data(), buf.size()};
+inline void append_string_view(spdlog::string_view_t view, memory_buf_t &dest) {
+    const auto *buf_ptr = view.data();
+    dest.append(buf_ptr, buf_ptr + view.size());
 }
 
-inline void append_string_view(spdlog::string_view_t view, memory_buf_t &dest)
-{
-    auto *buf_ptr = view.data();
-    if (buf_ptr != nullptr)
-    {
-        dest.append(buf_ptr, buf_ptr + view.size());
-    }
-}
-
-template<typename T>
-inline void append_int(T n, memory_buf_t &dest)
-{
+template <typename T>
+void append_int(T n, memory_buf_t &dest) {
     fmt::format_int i(n);
     dest.append(i.data(), i.data() + i.size());
 }
 
-template<typename T>
-inline unsigned count_digits(T n)
-{
-    using count_type = typename std::conditional<(sizeof(T) > sizeof(uint32_t)), uint64_t, uint32_t>::type;
-    return static_cast<unsigned>(fmt::internal::count_digits(static_cast<count_type>(n)));
+template <typename T>
+constexpr unsigned int count_digits_fallback(T n) {
+    // taken from fmt: https://github.com/fmtlib/fmt/blob/8.0.1/include/fmt/format.h#L899-L912
+    unsigned int count = 1;
+    for (;;) {
+        // Integer division is slow so do it for a group of four digits instead
+        // of for every digit. The idea comes from the talk by Alexandrescu
+        // "Three Optimization Tips for C++". See speed-test for a comparison.
+        if (n < 10) return count;
+        if (n < 100) return count + 1;
+        if (n < 1000) return count + 2;
+        if (n < 10000) return count + 3;
+        n /= 10000U;
+        count += 4;
+    }
 }
 
-inline void pad2(int n, memory_buf_t &dest)
-{
-    if (n > 99)
+template <typename T>
+inline unsigned int count_digits(T n) {
+    using count_type = std::conditional_t<(sizeof(T) > sizeof(uint32_t)), uint64_t, uint32_t>;
+
+    return static_cast<unsigned int>(fmt::
+// fmt 7.0.0 renamed the internal namespace to detail.
+// See: https://github.com/fmtlib/fmt/issues/1538
+#if FMT_VERSION < 70000
+                                         internal
+#else
+                                         detail
+#endif
+                                     ::count_digits(static_cast<count_type>(n)));
+}
+
+inline void pad2(int n, memory_buf_t &dest) {
+    if (n >= 0 && n < 100)  // 0-99
     {
-        append_int(n, dest);
+        dest.push_back(static_cast<char>('0' + (n / 10)));
+        dest.push_back(static_cast<char>('0' + (n % 10)));
+    } else  // unlikely, but just in case, let fmt deal with it
+    {
+        fmt_lib::format_to(std::back_inserter(dest), SPDLOG_FMT_STRING("{:02}"), n);
     }
-    else if (n > 9) // 10-99
-    {
-        dest.push_back(static_cast<char>('0' + n / 10));
-        dest.push_back(static_cast<char>('0' + n % 10));
-    }
-    else if (n >= 0) // 0-9
-    {
+}
+
+template <typename T>
+inline void pad_uint(T n, unsigned int width, memory_buf_t &dest) {
+    static_assert(std::is_unsigned_v<T>, "pad_uint must get unsigned T");
+    for (auto digits = count_digits(n); digits < width; ++digits) {
         dest.push_back('0');
-        dest.push_back(static_cast<char>('0' + n));
-    }
-    else // negatives (unlikely, but just in case, let fmt deal with it)
-    {
-        fmt::format_to(dest, "{:02}", n);
-    }
-}
-
-template<typename T>
-inline void pad_uint(T n, unsigned int width, memory_buf_t &dest)
-{
-    static_assert(std::is_unsigned<T>::value, "pad_uint must get unsigned T");
-    auto digits = count_digits(n);
-    if (width > digits)
-    {
-        const char *zeroes = "0000000000000000000";
-        dest.append(zeroes, zeroes + width - digits);
     }
     append_int(n, dest);
 }
 
-template<typename T>
-inline void pad3(T n, memory_buf_t &dest)
-{
-    pad_uint(n, 3, dest);
+template <typename T>
+void pad3(T n, memory_buf_t &dest) {
+    static_assert(std::is_unsigned_v<T>, "pad3 must get unsigned T");
+    if (n < 1000) {
+        dest.push_back(static_cast<char>((n / 100) + '0'));
+        n = n % 100;
+        dest.push_back(static_cast<char>((n / 10) + '0'));
+        dest.push_back(static_cast<char>((n % 10) + '0'));
+    } else {
+        append_int(n, dest);
+    }
 }
 
-template<typename T>
-inline void pad6(T n, memory_buf_t &dest)
-{
+template <typename T>
+void pad6(T n, memory_buf_t &dest) {
     pad_uint(n, 6, dest);
 }
 
-template<typename T>
-inline void pad9(T n, memory_buf_t &dest)
-{
+template <typename T>
+void pad9(T n, memory_buf_t &dest) {
     pad_uint(n, 9, dest);
 }
 
 // return fraction of a second of the given time_point.
 // e.g.
 // fraction<std::milliseconds>(tp) -> will return the millis part of the second
-template<typename ToDuration>
-inline ToDuration time_fraction(log_clock::time_point tp)
-{
+template <typename ToDuration>
+ToDuration time_fraction(log_clock::time_point tp) {
     using std::chrono::duration_cast;
     using std::chrono::seconds;
     auto duration = tp.time_since_epoch();
@@ -106,6 +111,6 @@ inline ToDuration time_fraction(log_clock::time_point tp)
     return duration_cast<ToDuration>(duration) - duration_cast<ToDuration>(secs);
 }
 
-} // namespace fmt_helper
-} // namespace details
-} // namespace spdlog
+}  // namespace fmt_helper
+}  // namespace details
+}  // namespace spdlog

include/spdlog/details/log_msg-inl.h

@@ -1,34 +0,0 @@
-// Copyright(c) 2015-present, Gabi Melman & spdlog contributors.
-// Distributed under the MIT License (http://opensource.org/licenses/MIT)
-
-#pragma once
-
-#ifndef SPDLOG_HEADER_ONLY
-#include "spdlog/details/log_msg.h"
-#endif
-
-#include "spdlog/details/os.h"
-
-namespace spdlog {
-namespace details {
-
-SPDLOG_INLINE log_msg::log_msg(spdlog::source_loc loc, string_view_t logger_name, spdlog::level::level_enum lvl, spdlog::string_view_t msg)
-    : logger_name(logger_name)
-    , level(lvl)
-#ifndef SPDLOG_NO_DATETIME
-    , time(os::now())
-#endif
-
-#ifndef SPDLOG_NO_THREAD_ID
-    , thread_id(os::thread_id())
-#endif
-    , source(loc)
-    , payload(msg)
-{}
-
-SPDLOG_INLINE log_msg::log_msg(string_view_t logger_name, spdlog::level::level_enum lvl, spdlog::string_view_t msg)
-    : log_msg(source_loc{}, logger_name, lvl, msg)
-{}
-
-} // namespace details
-} // namespace spdlog

include/spdlog/details/log_msg.h

@@ -3,20 +3,22 @@
 
 #pragma once
 
-#include "spdlog/common.h"
 #include <string>
 
+#include "../common.h"
+
 namespace spdlog {
 namespace details {
-struct log_msg
-{
+struct SPDLOG_API log_msg {
     log_msg() = default;
-    log_msg(source_loc loc, string_view_t logger_name, level::level_enum lvl, string_view_t msg);
-    log_msg(string_view_t logger_name, level::level_enum lvl, string_view_t msg);
+    log_msg(log_clock::time_point log_time, const source_loc &loc, string_view_t logger_name, level lvl, string_view_t msg);
+    log_msg(const source_loc &loc, string_view_t logger_name, level lvl, string_view_t msg);
+    log_msg(string_view_t logger_name, level lvl, string_view_t msg);
     log_msg(const log_msg &other) = default;
+    log_msg &operator=(const log_msg &other) = default;
 
     string_view_t logger_name;
-    level::level_enum level{level::off};
+    level log_level{level::off};
     log_clock::time_point time;
     size_t thread_id{0};
 
@@ -27,9 +29,5 @@ struct log_msg
     source_loc source;
     string_view_t payload;
 };
-} // namespace details
-} // namespace spdlog
-
-#ifdef SPDLOG_HEADER_ONLY
-#include "log_msg-inl.h"
-#endif
+}  // namespace details
+}  // namespace spdlog

include/spdlog/details/log_msg_buffer-inl.h

@@ -1,60 +0,0 @@
-// Copyright(c) 2015-present, Gabi Melman & spdlog contributors.
-// Distributed under the MIT License (http://opensource.org/licenses/MIT)
-
-#pragma once
-
-#ifndef SPDLOG_HEADER_ONLY
-#include "spdlog/details/log_msg_buffer.h"
-#endif
-
-namespace spdlog {
-namespace details {
-
-SPDLOG_INLINE log_msg_buffer::log_msg_buffer(const log_msg &orig_msg)
-    : log_msg{orig_msg}
-{
-    buffer.append(logger_name.begin(), logger_name.end());
-    buffer.append(payload.begin(), payload.end());
-    update_string_views();
-}
-
-SPDLOG_INLINE log_msg_buffer::log_msg_buffer(const log_msg_buffer &other)
-    : log_msg{other}
-{
-    buffer.append(logger_name.begin(), logger_name.end());
-    buffer.append(payload.begin(), payload.end());
-    update_string_views();
-}
-
-SPDLOG_INLINE log_msg_buffer::log_msg_buffer(log_msg_buffer &&other)
-    : log_msg{std::move(other)}
-    , buffer{std::move(other.buffer)}
-{
-    update_string_views();
-}
-
-SPDLOG_INLINE log_msg_buffer &log_msg_buffer::operator=(const log_msg_buffer &other)
-{
-    log_msg::operator=(other);
-    buffer.clear();
-    buffer.append(other.buffer.data(), other.buffer.data() + other.buffer.size());
-    update_string_views();
-    return *this;
-}
-
-SPDLOG_INLINE log_msg_buffer &log_msg_buffer::operator=(log_msg_buffer &&other)
-{
-    log_msg::operator=(std::move(other));
-    buffer = std::move(other.buffer);
-    update_string_views();
-    return *this;
-}
-
-SPDLOG_INLINE void log_msg_buffer::update_string_views()
-{
-    logger_name = string_view_t{buffer.data(), logger_name.size()};
-    payload = string_view_t{buffer.data() + logger_name.size(), payload.size()};
-}
-
-} // namespace details
-} // namespace spdlog

include/spdlog/details/log_msg_buffer.h

@@ -1,33 +0,0 @@
-// Copyright(c) 2015-present, Gabi Melman & spdlog contributors.
-// Distributed under the MIT License (http://opensource.org/licenses/MIT)
-
-#pragma once
-
-#include "spdlog/details/log_msg.h"
-
-namespace spdlog {
-namespace details {
-
-// Extend log_msg with internal buffer to store its payload.
-// THis is needed since log_msg holds string_views that points to stack data.
-
-class log_msg_buffer : public log_msg
-{
-    memory_buf_t buffer;
-    void update_string_views();
-
-public:
-    log_msg_buffer() = default;
-    explicit log_msg_buffer(const log_msg &orig_msg);
-    log_msg_buffer(const log_msg_buffer &other);
-    log_msg_buffer(log_msg_buffer &&other);
-    log_msg_buffer &operator=(const log_msg_buffer &other);
-    log_msg_buffer &operator=(log_msg_buffer &&other);
-};
-
-} // namespace details
-} // namespace spdlog
-
-#ifdef SPDLOG_HEADER_ONLY
-#include "log_msg_buffer-inl.h"
-#endif

include/spdlog/details/mpmc_blocking_q.h

@@ -10,27 +10,25 @@
 // dequeue_for(..) - will block until the queue is not empty or timeout have
 // passed.
 
-#include "spdlog/details/circular_q.h"
-
+#include <atomic>
 #include <condition_variable>
 #include <mutex>
 
+#include "./circular_q.h"
+
 namespace spdlog {
 namespace details {
 
-template<typename T>
-class mpmc_blocking_queue
-{
+template <typename T>
+class mpmc_blocking_queue {
 public:
     using item_type = T;
     explicit mpmc_blocking_queue(size_t max_items)
-        : q_(max_items)
-    {}
+        : q_(max_items) {}
 
 #ifndef __MINGW32__
     // try to enqueue and block if no room left
-    void enqueue(T &&item)
-    {
+    void enqueue(T &&item) {
         {
             std::unique_lock<std::mutex> lock(queue_mutex_);
             pop_cv_.wait(lock, [this] { return !this->q_.full(); });
@@ -39,9 +37,8 @@ public:
         push_cv_.notify_one();
     }
 
-    // enqueue immediately. overrun oldest message in the queue if no room left.
-    void enqueue_nowait(T &&item)
-    {
+    // enqueue immediately. overrun the oldest message in the queue if no room left.
+    void enqueue_nowait(T &&item) {
         {
             std::unique_lock<std::mutex> lock(queue_mutex_);
             q_.push_back(std::move(item));
@@ -49,14 +46,24 @@ public:
         push_cv_.notify_one();
     }
 
-    // try to dequeue item. if no item found. wait upto timeout and try again
+    void enqueue_if_have_room(T &&item) {
+        {
+            std::unique_lock lock(queue_mutex_);
+            if (q_.full()) {
+                ++discard_counter_;
+                return;
+            }
+            q_.push_back(std::move(item));
+        }
+        push_cv_.notify_one();
+    }
+
+    // dequeue with a timeout.
     // Return true, if succeeded dequeue item, false otherwise
-    bool dequeue_for(T &popped_item, std::chrono::milliseconds wait_duration)
-    {
+    bool dequeue_for(T &popped_item, std::chrono::milliseconds wait_duration) {
         {
             std::unique_lock<std::mutex> lock(queue_mutex_);
-            if (!push_cv_.wait_for(lock, wait_duration, [this] { return !this->q_.empty(); }))
-            {
+            if (!push_cv_.wait_for(lock, wait_duration, [this] { return !this->q_.empty(); })) {
                 return false;
             }
             popped_item = std::move(q_.front());
@@ -66,13 +73,23 @@ public:
         return true;
     }
 
+    // blocking dequeue without a timeout.
+    void dequeue(T &popped_item) {
+        {
+            std::unique_lock<std::mutex> lock(queue_mutex_);
+            push_cv_.wait(lock, [this] { return !this->q_.empty(); });
+            popped_item = std::move(q_.front());
+            q_.pop_front();
+        }
+        pop_cv_.notify_one();
+    }
+
 #else
     // apparently mingw deadlocks if the mutex is released before cv.notify_one(),
     // so release the mutex at the very end each function.
 
     // try to enqueue and block if no room left
-    void enqueue(T &&item)
-    {
+    void enqueue(T &&item) {
         std::unique_lock<std::mutex> lock(queue_mutex_);
         pop_cv_.wait(lock, [this] { return !this->q_.full(); });
         q_.push_back(std::move(item));
@@ -80,20 +97,32 @@ public:
     }
 
     // enqueue immediately. overrun oldest message in the queue if no room left.
-    void enqueue_nowait(T &&item)
-    {
+    void enqueue_nowait(T &&item) {
         std::unique_lock<std::mutex> lock(queue_mutex_);
         q_.push_back(std::move(item));
         push_cv_.notify_one();
     }
 
-    // try to dequeue item. if no item found. wait upto timeout and try again
-    // Return true, if succeeded dequeue item, false otherwise
-    bool dequeue_for(T &popped_item, std::chrono::milliseconds wait_duration)
-    {
+    void enqueue_if_have_room(T &&item) {
+        bool pushed = false;
         std::unique_lock<std::mutex> lock(queue_mutex_);
-        if (!push_cv_.wait_for(lock, wait_duration, [this] { return !this->q_.empty(); }))
-        {
+        if (!q_.full()) {
+            q_.push_back(std::move(item));
+            pushed = true;
+        }
+
+        if (pushed) {
+            push_cv_.notify_one();
+        } else {
+            ++discard_counter_;
+        }
+    }
+
+    // dequeue with a timeout.
+    // Return true, if succeeded dequeue item, false otherwise
+    bool dequeue_for(T &popped_item, std::chrono::milliseconds wait_duration) {
+        std::unique_lock<std::mutex> lock(queue_mutex_);
+        if (!push_cv_.wait_for(lock, wait_duration, [this] { return !this->q_.empty(); })) {
             return false;
         }
         popped_item = std::move(q_.front());
@@ -102,19 +131,42 @@ public:
         return true;
     }
 
+    // blocking dequeue without a timeout.
+    void dequeue(T &popped_item) {
+        std::unique_lock<std::mutex> lock(queue_mutex_);
+        push_cv_.wait(lock, [this] { return !this->q_.empty(); });
+        popped_item = std::move(q_.front());
+        q_.pop_front();
+        pop_cv_.notify_one();
+    }
+
 #endif
 
-    size_t overrun_counter()
-    {
-        std::unique_lock<std::mutex> lock(queue_mutex_);
+    size_t overrun_counter() {
+        std::lock_guard<std::mutex> lock(queue_mutex_);
         return q_.overrun_counter();
     }
 
+    size_t discard_counter() { return discard_counter_.load(std::memory_order_relaxed); }
+
+    size_t size() {
+        std::lock_guard<std::mutex> lock(queue_mutex_);
+        return q_.size();
+    }
+
+    void reset_overrun_counter() {
+        std::lock_guard<std::mutex> lock(queue_mutex_);
+        q_.reset_overrun_counter();
+    }
+
+    void reset_discard_counter() { discard_counter_.store(0, std::memory_order_relaxed); }
+
 private:
     std::mutex queue_mutex_;
     std::condition_variable push_cv_;
     std::condition_variable pop_cv_;
     spdlog::details::circular_q<T> q_;
+    std::atomic<size_t> discard_counter_{0};
 };
-} // namespace details
-} // namespace spdlog
+}  // namespace details
+}  // namespace spdlog

include/spdlog/details/null_mutex.h

@@ -5,45 +5,33 @@
 
 #include <atomic>
 #include <utility>
-// null, no cost dummy "mutex" and dummy "atomic" int
 
+// null, no cost dummy "mutex" and dummy "atomic" log level
 namespace spdlog {
 namespace details {
-struct null_mutex
-{
+struct null_mutex {
     void lock() const {}
     void unlock() const {}
-    bool try_lock() const
-    {
-        return true;
-    }
 };
 
-struct null_atomic_int
-{
-    int value;
-    null_atomic_int() = default;
+template <typename T>
+struct null_atomic {
+    T value;
 
-    explicit null_atomic_int(int new_value)
-        : value(new_value)
-    {}
+    null_atomic() = default;
 
-    int load(std::memory_order = std::memory_order_relaxed) const
-    {
-        return value;
-    }
+    explicit constexpr null_atomic(T new_value)
+        : value(new_value) {}
 
-    void store(int new_value, std::memory_order = std::memory_order_relaxed)
-    {
-        value = new_value;
-    }
+    [[nodiscard]] T load(std::memory_order = std::memory_order_seq_cst) const { return value; }
 
-    int exchange(int new_value, std::memory_order = std::memory_order_relaxed)
-    {
+    void store(T new_value, std::memory_order = std::memory_order_seq_cst) { value = new_value; }
+
+    T exchange(T new_value, std::memory_order = std::memory_order_seq_cst) {
         std::swap(new_value, value);
-        return new_value; // return value before the call
+        return new_value;  // return value before the call
     }
 };
 
-} // namespace details
-} // namespace spdlog
+}  // namespace details
+}  // namespace spdlog

include/spdlog/details/os-inl.h

@@ -1,465 +0,0 @@
-// Copyright(c) 2015-present, Gabi Melman & spdlog contributors.
-// Distributed under the MIT License (http://opensource.org/licenses/MIT)
-
-#pragma once
-
-#ifndef SPDLOG_HEADER_ONLY
-#include "spdlog/details/os.h"
-#endif
-
-#include "spdlog/common.h"
-
-#include <algorithm>
-#include <chrono>
-#include <cstdio>
-#include <cstdlib>
-#include <cstring>
-#include <ctime>
-#include <string>
-#include <thread>
-#include <array>
-#include <sys/stat.h>
-#include <sys/types.h>
-
-#ifdef _WIN32
-
-#ifndef NOMINMAX
-#define NOMINMAX // prevent windows redefining min/max
-#endif
-
-#ifndef WIN32_LEAN_AND_MEAN
-#define WIN32_LEAN_AND_MEAN
-#endif
-#include <io.h>      // _get_osfhandle and _isatty support
-#include <process.h> //  _get_pid support
-#include <windows.h>
-
-#ifdef __MINGW32__
-#include <share.h>
-#endif
-
-#if defined(SPDLOG_WCHAR_TO_UTF8_SUPPORT) || defined(SPDLOG_WCHAR_FILENAMES)
-#include <limits>
-#endif
-
-#else // unix
-
-#include <fcntl.h>
-#include <unistd.h>
-
-#ifdef __linux__
-#include <sys/syscall.h> //Use gettid() syscall under linux to get thread id
-
-#elif defined(_AIX)
-#include <pthread.h> // for pthread_getthreadid_np
-
-#elif defined(__DragonFly__) || defined(__FreeBSD__)
-#include <pthread_np.h> // for pthread_getthreadid_np
-
-#elif defined(__NetBSD__)
-#include <lwp.h> // for _lwp_self
-
-#elif defined(__sun)
-#include <thread.h> // for thr_self
-#endif
-
-#endif // unix
-
-#ifndef __has_feature      // Clang - feature checking macros.
-#define __has_feature(x) 0 // Compatibility with non-clang compilers.
-#endif
-
-namespace spdlog {
-namespace details {
-namespace os {
-
-SPDLOG_INLINE spdlog::log_clock::time_point now() SPDLOG_NOEXCEPT
-{
-
-#if defined __linux__ && defined SPDLOG_CLOCK_COARSE
-    timespec ts;
-    ::clock_gettime(CLOCK_REALTIME_COARSE, &ts);
-    return std::chrono::time_point<log_clock, typename log_clock::duration>(
-        std::chrono::duration_cast<typename log_clock::duration>(std::chrono::seconds(ts.tv_sec) + std::chrono::nanoseconds(ts.tv_nsec)));
-
-#else
-    return log_clock::now();
-#endif
-}
-SPDLOG_INLINE std::tm localtime(const std::time_t &time_tt) SPDLOG_NOEXCEPT
-{
-
-#ifdef _WIN32
-    std::tm tm;
-    localtime_s(&tm, &time_tt);
-#else
-    std::tm tm;
-    localtime_r(&time_tt, &tm);
-#endif
-    return tm;
-}
-
-SPDLOG_INLINE std::tm localtime() SPDLOG_NOEXCEPT
-{
-    std::time_t now_t = time(nullptr);
-    return localtime(now_t);
-}
-
-SPDLOG_INLINE std::tm gmtime(const std::time_t &time_tt) SPDLOG_NOEXCEPT
-{
-
-#ifdef _WIN32
-    std::tm tm;
-    gmtime_s(&tm, &time_tt);
-#else
-    std::tm tm;
-    gmtime_r(&time_tt, &tm);
-#endif
-    return tm;
-}
-
-SPDLOG_INLINE std::tm gmtime() SPDLOG_NOEXCEPT
-{
-    std::time_t now_t = time(nullptr);
-    return gmtime(now_t);
-}
-
-SPDLOG_INLINE void prevent_child_fd(FILE *f)
-{
-
-#ifdef _WIN32
-#if !defined(__cplusplus_winrt)
-    auto file_handle = reinterpret_cast<HANDLE>(_get_osfhandle(_fileno(f)));
-    if (!::SetHandleInformation(file_handle, HANDLE_FLAG_INHERIT, 0))
-        SPDLOG_THROW(spdlog_ex("SetHandleInformation failed", errno));
-#endif
-#else
-    auto fd = fileno(f);
-    if (fcntl(fd, F_SETFD, FD_CLOEXEC) == -1)
-    {
-        SPDLOG_THROW(spdlog_ex("fcntl with FD_CLOEXEC failed", errno));
-    }
-#endif
-}
-
-// fopen_s on non windows for writing
-SPDLOG_INLINE bool fopen_s(FILE **fp, const filename_t &filename, const filename_t &mode)
-{
-#ifdef _WIN32
-#ifdef SPDLOG_WCHAR_FILENAMES
-    *fp = _wfsopen((filename.c_str()), mode.c_str(), _SH_DENYNO);
-#else
-    *fp = _fsopen((filename.c_str()), mode.c_str(), _SH_DENYNO);
-#endif
-#else // unix
-    *fp = fopen((filename.c_str()), mode.c_str());
-#endif
-
-#ifdef SPDLOG_PREVENT_CHILD_FD
-    if (*fp != nullptr)
-    {
-        prevent_child_fd(*fp);
-    }
-#endif
-    return *fp == nullptr;
-}
-
-SPDLOG_INLINE int remove(const filename_t &filename) SPDLOG_NOEXCEPT
-{
-#if defined(_WIN32) && defined(SPDLOG_WCHAR_FILENAMES)
-    return _wremove(filename.c_str());
-#else
-    return std::remove(filename.c_str());
-#endif
-}
-
-SPDLOG_INLINE int remove_if_exists(const filename_t &filename) SPDLOG_NOEXCEPT
-{
-    return file_exists(filename) ? remove(filename) : 0;
-}
-
-SPDLOG_INLINE int rename(const filename_t &filename1, const filename_t &filename2) SPDLOG_NOEXCEPT
-{
-#if defined(_WIN32) && defined(SPDLOG_WCHAR_FILENAMES)
-    return _wrename(filename1.c_str(), filename2.c_str());
-#else
-    return std::rename(filename1.c_str(), filename2.c_str());
-#endif
-}
-
-// Return true if file exists
-SPDLOG_INLINE bool file_exists(const filename_t &filename) SPDLOG_NOEXCEPT
-{
-#ifdef _WIN32
-#ifdef SPDLOG_WCHAR_FILENAMES
-    auto attribs = GetFileAttributesW(filename.c_str());
-#else
-    auto attribs = GetFileAttributesA(filename.c_str());
-#endif
-    return (attribs != INVALID_FILE_ATTRIBUTES && !(attribs & FILE_ATTRIBUTE_DIRECTORY));
-#else // common linux/unix all have the stat system call
-    struct stat buffer;
-    return (::stat(filename.c_str(), &buffer) == 0);
-#endif
-}
-
-// Return file size according to open FILE* object
-SPDLOG_INLINE size_t filesize(FILE *f)
-{
-    if (f == nullptr)
-    {
-        SPDLOG_THROW(spdlog_ex("Failed getting file size. fd is null"));
-    }
-#if defined(_WIN32) && !defined(__CYGWIN__)
-    int fd = _fileno(f);
-#if _WIN64 // 64 bits
-    __int64 ret = _filelengthi64(fd);
-    if (ret >= 0)
-    {
-        return static_cast<size_t>(ret);
-    }
-
-#else // windows 32 bits
-    long ret = _filelength(fd);
-    if (ret >= 0)
-    {
-        return static_cast<size_t>(ret);
-    }
-#endif
-
-#else // unix
-    int fd = fileno(f);
-// 64 bits(but not in osx or cygwin, where fstat64 is deprecated)
-#if (defined(__linux__) || defined(__sun) || defined(_AIX)) && (defined(__LP64__) || defined(_LP64))
-    struct stat64 st;
-    if (::fstat64(fd, &st) == 0)
-    {
-        return static_cast<size_t>(st.st_size);
-    }
-#else // unix 32 bits or cygwin
-    struct stat st;
-
-    if (::fstat(fd, &st) == 0)
-    {
-        return static_cast<size_t>(st.st_size);
-    }
-#endif
-#endif
-    SPDLOG_THROW(spdlog_ex("Failed getting file size from fd", errno));
-}
-
-// Return utc offset in minutes or throw spdlog_ex on failure
-SPDLOG_INLINE int utc_minutes_offset(const std::tm &tm)
-{
-
-#ifdef _WIN32
-#if _WIN32_WINNT < _WIN32_WINNT_WS08
-    TIME_ZONE_INFORMATION tzinfo;
-    auto rv = GetTimeZoneInformation(&tzinfo);
-#else
-    DYNAMIC_TIME_ZONE_INFORMATION tzinfo;
-    auto rv = GetDynamicTimeZoneInformation(&tzinfo);
-#endif
-    if (rv == TIME_ZONE_ID_INVALID)
-        SPDLOG_THROW(spdlog::spdlog_ex("Failed getting timezone info. ", errno));
-
-    int offset = -tzinfo.Bias;
-    if (tm.tm_isdst)
-    {
-        offset -= tzinfo.DaylightBias;
-    }
-    else
-    {
-        offset -= tzinfo.StandardBias;
-    }
-    return offset;
-#else
-
-#if defined(sun) || defined(__sun) || defined(_AIX)
-    // 'tm_gmtoff' field is BSD extension and it's missing on SunOS/Solaris
-    struct helper
-    {
-        static long int calculate_gmt_offset(const std::tm &localtm = details::os::localtime(), const std::tm &gmtm = details::os::gmtime())
-        {
-            int local_year = localtm.tm_year + (1900 - 1);
-            int gmt_year = gmtm.tm_year + (1900 - 1);
-
-            long int days = (
-                // difference in day of year
-                localtm.tm_yday -
-                gmtm.tm_yday
-
-                // + intervening leap days
-                + ((local_year >> 2) - (gmt_year >> 2)) - (local_year / 100 - gmt_year / 100) +
-                ((local_year / 100 >> 2) - (gmt_year / 100 >> 2))
-
-                // + difference in years * 365 */
-                + (long int)(local_year - gmt_year) * 365);
-
-            long int hours = (24 * days) + (localtm.tm_hour - gmtm.tm_hour);
-            long int mins = (60 * hours) + (localtm.tm_min - gmtm.tm_min);
-            long int secs = (60 * mins) + (localtm.tm_sec - gmtm.tm_sec);
-
-            return secs;
-        }
-    };
-
-    auto offset_seconds = helper::calculate_gmt_offset(tm);
-#else
-    auto offset_seconds = tm.tm_gmtoff;
-#endif
-
-    return static_cast<int>(offset_seconds / 60);
-#endif
-}
-
-// Return current thread id as size_t
-// It exists because the std::this_thread::get_id() is much slower(especially
-// under VS 2013)
-SPDLOG_INLINE size_t _thread_id() SPDLOG_NOEXCEPT
-{
-#ifdef _WIN32
-    return static_cast<size_t>(::GetCurrentThreadId());
-#elif defined(__linux__)
-#if defined(__ANDROID__) && defined(__ANDROID_API__) && (__ANDROID_API__ < 21)
-#define SYS_gettid __NR_gettid
-#endif
-    return static_cast<size_t>(syscall(SYS_gettid));
-#elif defined(_AIX) || defined(__DragonFly__) || defined(__FreeBSD__)
-    return static_cast<size_t>(pthread_getthreadid_np());
-#elif defined(__NetBSD__)
-    return static_cast<size_t>(_lwp_self());
-#elif defined(__OpenBSD__)
-    return static_cast<size_t>(getthrid());
-#elif defined(__sun)
-    return static_cast<size_t>(thr_self());
-#elif __APPLE__
-    uint64_t tid;
-    pthread_threadid_np(nullptr, &tid);
-    return static_cast<size_t>(tid);
-#else // Default to standard C++11 (other Unix)
-    return static_cast<size_t>(std::hash<std::thread::id>()(std::this_thread::get_id()));
-#endif
-}
-
-// Return current thread id as size_t (from thread local storage)
-SPDLOG_INLINE size_t thread_id() SPDLOG_NOEXCEPT
-{
-#if defined(SPDLOG_NO_TLS)
-    return _thread_id();
-#else // cache thread id in tls
-    static thread_local const size_t tid = _thread_id();
-    return tid;
-#endif
-}
-
-// This is avoid msvc issue in sleep_for that happens if the clock changes.
-// See https://github.com/gabime/spdlog/issues/609
-SPDLOG_INLINE void sleep_for_millis(int milliseconds) SPDLOG_NOEXCEPT
-{
-#if defined(_WIN32)
-    ::Sleep(milliseconds);
-#else
-    std::this_thread::sleep_for(std::chrono::milliseconds(milliseconds));
-#endif
-}
-
-// wchar support for windows file names (SPDLOG_WCHAR_FILENAMES must be defined)
-#if defined(_WIN32) && defined(SPDLOG_WCHAR_FILENAMES)
-SPDLOG_INLINE std::string filename_to_str(const filename_t &filename)
-{
-    memory_buf_t buf;
-    wstr_to_utf8buf(filename, buf);
-    return fmt::to_string(buf);
-}
-#else
-SPDLOG_INLINE std::string filename_to_str(const filename_t &filename)
-{
-    return filename;
-}
-#endif
-
-SPDLOG_INLINE int pid() SPDLOG_NOEXCEPT
-{
-
-#ifdef _WIN32
-    return static_cast<int>(::GetCurrentProcessId());
-#else
-    return static_cast<int>(::getpid());
-#endif
-}
-
-// Determine if the terminal supports colors
-// Source: https://github.com/agauniyal/rang/
-SPDLOG_INLINE bool is_color_terminal() SPDLOG_NOEXCEPT
-{
-#ifdef _WIN32
-    return true;
-#else
-    static constexpr std::array<const char *, 14> Terms = {
-        {"ansi", "color", "console", "cygwin", "gnome", "konsole", "kterm", "linux", "msys", "putty", "rxvt", "screen", "vt100", "xterm"}};
-
-    const char *env_p = std::getenv("TERM");
-    if (env_p == nullptr)
-    {
-        return false;
-    }
-
-    static const bool result =
-        std::any_of(std::begin(Terms), std::end(Terms), [&](const char *term) { return std::strstr(env_p, term) != nullptr; });
-    return result;
-#endif
-}
-
-// Detrmine if the terminal attached
-// Source: https://github.com/agauniyal/rang/
-SPDLOG_INLINE bool in_terminal(FILE *file) SPDLOG_NOEXCEPT
-{
-
-#ifdef _WIN32
-    return _isatty(_fileno(file)) != 0;
-#else
-    return isatty(fileno(file)) != 0;
-#endif
-}
-
-#if (defined(SPDLOG_WCHAR_TO_UTF8_SUPPORT) || defined(SPDLOG_WCHAR_FILENAMES)) && defined(_WIN32)
-SPDLOG_INLINE void wstr_to_utf8buf(wstring_view_t wstr, memory_buf_t &target)
-{
-    if (wstr.size() > static_cast<size_t>(std::numeric_limits<int>::max()))
-    {
-        SPDLOG_THROW(spdlog::spdlog_ex("UTF-16 string is too big to be converted to UTF-8"));
-    }
-
-    int wstr_size = static_cast<int>(wstr.size());
-    if (wstr_size == 0)
-    {
-        target.resize(0);
-        return;
-    }
-
-    int result_size = static_cast<int>(target.capacity());
-    if ((wstr_size + 1) * 2 > result_size)
-    {
-        result_size = ::WideCharToMultiByte(CP_UTF8, 0, wstr.data(), wstr_size, NULL, 0, NULL, NULL);
-    }
-
-    if (result_size > 0)
-    {
-        target.resize(result_size);
-        result_size = ::WideCharToMultiByte(CP_UTF8, 0, wstr.data(), wstr_size, target.data(), result_size, NULL, NULL);
-
-        if (result_size > 0)
-        {
-            target.resize(result_size);
-            return;
-        }
-    }
-
-    SPDLOG_THROW(spdlog::spdlog_ex(fmt::format("WideCharToMultiByte failed. Last error: {}", ::GetLastError())));
-}
-#endif // (defined(SPDLOG_WCHAR_TO_UTF8_SUPPORT) || defined(SPDLOG_WCHAR_FILENAMES)) && defined(_WIN32)
-
-} // namespace os
-} // namespace details
-} // namespace spdlog

include/spdlog/details/os.h

@@ -3,96 +3,126 @@
 
 #pragma once
 
-#include "spdlog/common.h"
-#include <ctime> // std::time_t
+#include <ctime>  // std::time_t
+#include <tuple>
+
+#include "../common.h"
+#include "../filename_t.h"
 
 namespace spdlog {
 namespace details {
 namespace os {
 
-spdlog::log_clock::time_point now() SPDLOG_NOEXCEPT;
+SPDLOG_API spdlog::log_clock::time_point now() noexcept;
 
-std::tm localtime(const std::time_t &time_tt) SPDLOG_NOEXCEPT;
+SPDLOG_API std::tm localtime(const std::time_t &time_tt) noexcept;
 
-std::tm localtime() SPDLOG_NOEXCEPT;
+SPDLOG_API std::tm localtime() noexcept;
 
-std::tm gmtime(const std::time_t &time_tt) SPDLOG_NOEXCEPT;
+SPDLOG_API std::tm gmtime(const std::time_t &time_tt) noexcept;
 
-std::tm gmtime() SPDLOG_NOEXCEPT;
+SPDLOG_API std::tm gmtime() noexcept;
 
-// eol definition
-#if !defined(SPDLOG_EOL)
+// eol definition and folder separator for the current os
 #ifdef _WIN32
-#define SPDLOG_EOL "\r\n"
+constexpr static const char *default_eol = "\r\n";
 #else
-#define SPDLOG_EOL "\n"
+constexpr static const char *default_eol = "\n";
 #endif
-#endif
-
-SPDLOG_CONSTEXPR static const char *default_eol = SPDLOG_EOL;
-
-// folder separator
-#ifdef _WIN32
-const char folder_sep = '\\';
-#else
-SPDLOG_CONSTEXPR static const char folder_sep = '/';
-#endif
-
-void prevent_child_fd(FILE *f);
 
 // fopen_s on non windows for writing
-bool fopen_s(FILE **fp, const filename_t &filename, const filename_t &mode);
-
-// Remove filename. return 0 on success
-int remove(const filename_t &filename) SPDLOG_NOEXCEPT;
-
-// Remove file if exists. return 0 on success
-// Note: Non atomic (might return failure to delete if concurrently deleted by other process/thread)
-int remove_if_exists(const filename_t &filename) SPDLOG_NOEXCEPT;
-
-int rename(const filename_t &filename1, const filename_t &filename2) SPDLOG_NOEXCEPT;
-
-// Return if file exists.
-bool file_exists(const filename_t &filename) SPDLOG_NOEXCEPT;
+SPDLOG_API bool fopen_s(FILE **fp, const filename_t &filename, const filename_t &mode);
 
 // Return file size according to open FILE* object
-size_t filesize(FILE *f);
+SPDLOG_API size_t filesize(FILE *f);
 
 // Return utc offset in minutes or throw spdlog_ex on failure
-int utc_minutes_offset(const std::tm &tm = details::os::localtime());
+SPDLOG_API int utc_minutes_offset(const std::tm &tm = details::os::localtime());
 
 // Return current thread id as size_t
 // It exists because the std::this_thread::get_id() is much slower(especially
 // under VS 2013)
-size_t _thread_id() SPDLOG_NOEXCEPT;
+SPDLOG_API size_t _thread_id() noexcept;
 
 // Return current thread id as size_t (from thread local storage)
-size_t thread_id() SPDLOG_NOEXCEPT;
+SPDLOG_API size_t thread_id() noexcept;
 
 // This is avoid msvc issue in sleep_for that happens if the clock changes.
 // See https://github.com/gabime/spdlog/issues/609
-void sleep_for_millis(int milliseconds) SPDLOG_NOEXCEPT;
+SPDLOG_API void sleep_for_millis(unsigned int milliseconds) noexcept;
 
-std::string filename_to_str(const filename_t &filename);
-
-int pid() SPDLOG_NOEXCEPT;
+// Return pid
+SPDLOG_API int pid() noexcept;
 
 // Determine if the terminal supports colors
 // Source: https://github.com/agauniyal/rang/
-bool is_color_terminal() SPDLOG_NOEXCEPT;
+SPDLOG_API bool is_color_terminal() noexcept;
 
-// Detrmine if the terminal attached
+// Determine if the terminal attached
 // Source: https://github.com/agauniyal/rang/
-bool in_terminal(FILE *file) SPDLOG_NOEXCEPT;
+SPDLOG_API bool in_terminal(FILE *file) noexcept;
 
-#if (defined(SPDLOG_WCHAR_TO_UTF8_SUPPORT) || defined(SPDLOG_WCHAR_FILENAMES)) && defined(_WIN32)
-void wstr_to_utf8buf(wstring_view_t wstr, memory_buf_t &target);
+#if (defined _WIN32)
+SPDLOG_API void wstr_to_utf8buf(wstring_view_t wstr, memory_buf_t &target);
+SPDLOG_API void utf8_to_wstrbuf(string_view_t str, wmemory_buf_t &target);
 #endif
 
-} // namespace os
-} // namespace details
-} // namespace spdlog
+// non thread safe, cross platform getenv/getenv_s
+// return empty string if field not found
+SPDLOG_API std::string getenv(const char *field);
 
-#ifdef SPDLOG_HEADER_ONLY
-#include "os-inl.h"
-#endif
+// Do fsync by FILE objectpointer.
+// Return true on success.
+SPDLOG_API bool fsync(FILE *fp);
+
+// Do non-locking fwrite if possible by the os or use the regular locking fwrite
+// Return true on success.
+SPDLOG_API bool fwrite_bytes(const void *ptr, const size_t n_bytes, FILE *fp);
+
+//
+// std::filesystem wrapper functions
+//
+
+// Return directory name from given path or empty string
+// "abc/file" => "abc"
+// "abc/" => "abc"
+// "abc" => ""
+SPDLOG_API filename_t dir_name(const filename_t &path);
+
+// Create a dir from the given path.
+// Return true if succeeded or if this dir already exists.
+SPDLOG_API bool create_dir(const filename_t &path);
+
+// Remove filename. return true on success
+SPDLOG_API bool remove(const filename_t &filename);
+
+// Remove file if exists. return 0 on success
+// Note: Non atomic (might return failure to delete if concurrently deleted by other process/thread)
+SPDLOG_API bool remove_if_exists(const filename_t &filename);
+
+// Rename file. return true on success
+SPDLOG_API bool rename(const filename_t &filename1, const filename_t &filename2) noexcept;
+
+// Return if file exists.
+SPDLOG_API bool path_exists(const filename_t &filename) noexcept;
+
+// Return file path and its extension:
+//
+// "mylog.txt" => ("mylog", ".txt")
+// "mylog" => ("mylog", "")
+// "mylog." => ("mylog.", "")
+// "/dir1/dir2/mylog.txt" => ("/dir1/dir2/mylog", ".txt")
+//
+// the starting dot in filenames is ignored (hidden files):
+//
+// ".mylog" => (".mylog". "")
+// "my_folder/.mylog" => ("my_folder/.mylog", "")
+// "my_folder/.mylog.txt" => ("my_folder/.mylog", ".txt")
+SPDLOG_API std::tuple<filename_t, filename_t> split_by_extension(const filename_t &fname);
+
+// Try tp convert filename to string. Return "??" if failed
+SPDLOG_API std::string filename_to_str(const filename_t &filename);
+
+}  // namespace os
+}  // namespace details
+}  // namespace spdlog

include/spdlog/details/pattern_formatter.h

@@ -1,99 +0,0 @@
-// Copyright(c) 2015-present, Gabi Melman & spdlog contributors.
-// Distributed under the MIT License (http://opensource.org/licenses/MIT)
-
-#pragma once
-
-#include "spdlog/common.h"
-#include "spdlog/details/log_msg.h"
-#include "spdlog/details/os.h"
-#include "spdlog/formatter.h"
-
-#include <chrono>
-#include <ctime>
-#include <memory>
-
-#include <string>
-#include <vector>
-
-namespace spdlog {
-namespace details {
-
-// padding information.
-struct padding_info
-{
-    enum pad_side
-    {
-        left,
-        right,
-        center
-    };
-
-    padding_info() = default;
-    padding_info(size_t width, padding_info::pad_side side)
-        : width_(width)
-        , side_(side)
-    {}
-
-    bool enabled() const
-    {
-        return width_ != 0;
-    }
-    const size_t width_ = 0;
-    const pad_side side_ = left;
-};
-
-class flag_formatter
-{
-public:
-    explicit flag_formatter(padding_info padinfo)
-        : padinfo_(padinfo)
-    {}
-    flag_formatter() = default;
-    virtual ~flag_formatter() = default;
-    virtual void format(const details::log_msg &msg, const std::tm &tm_time, memory_buf_t &dest) = 0;
-
-protected:
-    padding_info padinfo_;
-};
-
-} // namespace details
-
-class pattern_formatter final : public formatter
-{
-public:
-    explicit pattern_formatter(
-        std::string pattern, pattern_time_type time_type = pattern_time_type::local, std::string eol = spdlog::details::os::default_eol);
-
-    // use default pattern is not given
-    explicit pattern_formatter(pattern_time_type time_type = pattern_time_type::local, std::string eol = spdlog::details::os::default_eol);
-
-    pattern_formatter(const pattern_formatter &other) = delete;
-    pattern_formatter &operator=(const pattern_formatter &other) = delete;
-
-    std::unique_ptr<formatter> clone() const override;
-    void format(const details::log_msg &msg, memory_buf_t &dest) override;
-
-private:
-    std::string pattern_;
-    std::string eol_;
-    pattern_time_type pattern_time_type_;
-    std::tm cached_tm_;
-    std::chrono::seconds last_log_secs_;
-    std::vector<std::unique_ptr<details::flag_formatter>> formatters_;
-
-    std::tm get_time_(const details::log_msg &msg);
-    template<typename Padder>
-    void handle_flag_(char flag, details::padding_info padding);
-
-    // Extract given pad spec (e.g. %8X)
-    // Advance the given it pass the end of the padding spec found (if any)
-    // Return padding.
-    details::padding_info handle_padspec_(std::string::const_iterator &it, std::string::const_iterator end);
-
-    void compile_pattern_(const std::string &pattern);
-};
-} // namespace spdlog
-
-#ifdef SPDLOG_HEADER_ONLY
-#include "pattern_formatter-inl.h"
-#endif

include/spdlog/details/periodic_worker-inl.h

@@ -1,49 +0,0 @@
-// Copyright(c) 2015-present, Gabi Melman & spdlog contributors.
-// Distributed under the MIT License (http://opensource.org/licenses/MIT)
-
-#pragma once
-
-#ifndef SPDLOG_HEADER_ONLY
-#include "spdlog/details/periodic_worker.h"
-#endif
-
-namespace spdlog {
-namespace details {
-
-SPDLOG_INLINE periodic_worker::periodic_worker(const std::function<void()> &callback_fun, std::chrono::seconds interval)
-{
-    active_ = (interval > std::chrono::seconds::zero());
-    if (!active_)
-    {
-        return;
-    }
-
-    worker_thread_ = std::thread([this, callback_fun, interval]() {
-        for (;;)
-        {
-            std::unique_lock<std::mutex> lock(this->mutex_);
-            if (this->cv_.wait_for(lock, interval, [this] { return !this->active_; }))
-            {
-                return; // active_ == false, so exit this thread
-            }
-            callback_fun();
-        }
-    });
-}
-
-// stop the worker thread and join it
-SPDLOG_INLINE periodic_worker::~periodic_worker()
-{
-    if (worker_thread_.joinable())
-    {
-        {
-            std::lock_guard<std::mutex> lock(mutex_);
-            active_ = false;
-        }
-        cv_.notify_one();
-        worker_thread_.join();
-    }
-}
-
-} // namespace details
-} // namespace spdlog

include/spdlog/details/periodic_worker.h

@@ -1,40 +0,0 @@
-// Copyright(c) 2015-present, Gabi Melman & spdlog contributors.
-// Distributed under the MIT License (http://opensource.org/licenses/MIT)
-
-#pragma once
-
-// periodic worker thread - periodically executes the given callback function.
-//
-// RAII over the owned thread:
-//    creates the thread on construction.
-//    stops and joins the thread on destruction (if the thread is executing a callback, wait for it to finish first).
-
-#include <chrono>
-#include <condition_variable>
-#include <functional>
-#include <mutex>
-#include <thread>
-namespace spdlog {
-namespace details {
-
-class periodic_worker
-{
-public:
-    periodic_worker(const std::function<void()> &callback_fun, std::chrono::seconds interval);
-    periodic_worker(const periodic_worker &) = delete;
-    periodic_worker &operator=(const periodic_worker &) = delete;
-    // stop the worker thread and join it
-    ~periodic_worker();
-
-private:
-    bool active_;
-    std::thread worker_thread_;
-    std::mutex mutex_;
-    std::condition_variable cv_;
-};
-} // namespace details
-} // namespace spdlog
-
-#ifdef SPDLOG_HEADER_ONLY
-#include "periodic_worker-inl.h"
-#endif

include/spdlog/details/registry-inl.h

@@ -1,284 +0,0 @@
-// Copyright(c) 2015-present, Gabi Melman & spdlog contributors.
-// Distributed under the MIT License (http://opensource.org/licenses/MIT)
-
-#pragma once
-
-#ifndef SPDLOG_HEADER_ONLY
-#include "spdlog/details/registry.h"
-#endif
-
-#include "spdlog/common.h"
-#include "spdlog/details/periodic_worker.h"
-#include "spdlog/logger.h"
-#include "spdlog/details/pattern_formatter.h"
-
-#ifndef SPDLOG_DISABLE_DEFAULT_LOGGER
-// support for the default stdout color logger
-#ifdef _WIN32
-#include "spdlog/sinks/wincolor_sink.h"
-#else
-#include "spdlog/sinks/ansicolor_sink.h"
-#endif
-#endif // SPDLOG_DISABLE_DEFAULT_LOGGER
-
-#include <chrono>
-#include <functional>
-#include <memory>
-#include <string>
-#include <unordered_map>
-
-namespace spdlog {
-namespace details {
-
-SPDLOG_INLINE registry::registry()
-    : formatter_(new pattern_formatter())
-{
-
-#ifndef SPDLOG_DISABLE_DEFAULT_LOGGER
-    // create default logger (ansicolor_stdout_sink_mt or wincolor_stdout_sink_mt in windows).
-#ifdef _WIN32
-    auto color_sink = std::make_shared<sinks::wincolor_stdout_sink_mt>();
-#else
-    auto color_sink = std::make_shared<sinks::ansicolor_stdout_sink_mt>();
-#endif
-
-    const char *default_logger_name = "";
-    default_logger_ = std::make_shared<spdlog::logger>(default_logger_name, std::move(color_sink));
-    loggers_[default_logger_name] = default_logger_;
-
-#endif // SPDLOG_DISABLE_DEFAULT_LOGGER
-}
-SPDLOG_INLINE void registry::register_logger(std::shared_ptr<logger> new_logger)
-{
-    std::lock_guard<std::mutex> lock(logger_map_mutex_);
-    register_logger_(std::move(new_logger));
-}
-
-SPDLOG_INLINE void registry::initialize_logger(std::shared_ptr<logger> new_logger)
-{
-    std::lock_guard<std::mutex> lock(logger_map_mutex_);
-    new_logger->set_formatter(formatter_->clone());
-
-    if (err_handler_)
-    {
-        new_logger->set_error_handler(err_handler_);
-    }
-
-    new_logger->set_level(level_);
-    new_logger->flush_on(flush_level_);
-
-    if (backtrace_n_messages_ > 0)
-    {
-        new_logger->enable_backtrace(backtrace_n_messages_);
-    }
-
-    if (automatic_registration_)
-    {
-        register_logger_(std::move(new_logger));
-    }
-}
-
-SPDLOG_INLINE std::shared_ptr<logger> registry::get(const std::string &logger_name)
-{
-    std::lock_guard<std::mutex> lock(logger_map_mutex_);
-    auto found = loggers_.find(logger_name);
-    return found == loggers_.end() ? nullptr : found->second;
-}
-
-SPDLOG_INLINE std::shared_ptr<logger> registry::default_logger()
-{
-    std::lock_guard<std::mutex> lock(logger_map_mutex_);
-    return default_logger_;
-}
-
-// Return raw ptr to the default logger.
-// To be used directly by the spdlog default api (e.g. spdlog::info)
-// This make the default API faster, but cannot be used concurrently with set_default_logger().
-// e.g do not call set_default_logger() from one thread while calling spdlog::info() from another.
-SPDLOG_INLINE logger *registry::get_default_raw()
-{
-    return default_logger_.get();
-}
-
-// set default logger.
-// default logger is stored in default_logger_ (for faster retrieval) and in the loggers_ map.
-SPDLOG_INLINE void registry::set_default_logger(std::shared_ptr<logger> new_default_logger)
-{
-    std::lock_guard<std::mutex> lock(logger_map_mutex_);
-    // remove previous default logger from the map
-    if (default_logger_ != nullptr)
-    {
-        loggers_.erase(default_logger_->name());
-    }
-    if (new_default_logger != nullptr)
-    {
-        loggers_[new_default_logger->name()] = new_default_logger;
-    }
-    default_logger_ = std::move(new_default_logger);
-}
-
-SPDLOG_INLINE void registry::set_tp(std::shared_ptr<thread_pool> tp)
-{
-    std::lock_guard<std::recursive_mutex> lock(tp_mutex_);
-    tp_ = std::move(tp);
-}
-
-SPDLOG_INLINE std::shared_ptr<thread_pool> registry::get_tp()
-{
-    std::lock_guard<std::recursive_mutex> lock(tp_mutex_);
-    return tp_;
-}
-
-// Set global formatter. Each sink in each logger will get a clone of this object
-SPDLOG_INLINE void registry::set_formatter(std::unique_ptr<formatter> formatter)
-{
-    std::lock_guard<std::mutex> lock(logger_map_mutex_);
-    formatter_ = std::move(formatter);
-    for (auto &l : loggers_)
-    {
-        l.second->set_formatter(formatter_->clone());
-    }
-}
-
-SPDLOG_INLINE void registry::enable_backtrace(size_t n_messages)
-{
-    std::lock_guard<std::mutex> lock(logger_map_mutex_);
-    backtrace_n_messages_ = n_messages;
-
-    for (auto &l : loggers_)
-    {
-        l.second->enable_backtrace(n_messages);
-    }
-}
-
-SPDLOG_INLINE void registry::disable_backtrace()
-{
-    std::lock_guard<std::mutex> lock(logger_map_mutex_);
-    backtrace_n_messages_ = 0;
-    for (auto &l : loggers_)
-    {
-        l.second->disable_backtrace();
-    }
-}
-
-SPDLOG_INLINE void registry::set_level(level::level_enum log_level)
-{
-    std::lock_guard<std::mutex> lock(logger_map_mutex_);
-    for (auto &l : loggers_)
-    {
-        l.second->set_level(log_level);
-    }
-    level_ = log_level;
-}
-
-SPDLOG_INLINE void registry::flush_on(level::level_enum log_level)
-{
-    std::lock_guard<std::mutex> lock(logger_map_mutex_);
-    for (auto &l : loggers_)
-    {
-        l.second->flush_on(log_level);
-    }
-    flush_level_ = log_level;
-}
-
-SPDLOG_INLINE void registry::flush_every(std::chrono::seconds interval)
-{
-    std::lock_guard<std::mutex> lock(flusher_mutex_);
-    std::function<void()> clbk = std::bind(&registry::flush_all, this);
-    periodic_flusher_ = details::make_unique<periodic_worker>(clbk, interval);
-}
-
-SPDLOG_INLINE void registry::set_error_handler(void (*handler)(const std::string &msg))
-{
-    std::lock_guard<std::mutex> lock(logger_map_mutex_);
-    for (auto &l : loggers_)
-    {
-        l.second->set_error_handler(handler);
-    }
-    err_handler_ = handler;
-}
-
-SPDLOG_INLINE void registry::apply_all(const std::function<void(const std::shared_ptr<logger>)> &fun)
-{
-    std::lock_guard<std::mutex> lock(logger_map_mutex_);
-    for (auto &l : loggers_)
-    {
-        fun(l.second);
-    }
-}
-
-SPDLOG_INLINE void registry::flush_all()
-{
-    std::lock_guard<std::mutex> lock(logger_map_mutex_);
-    for (auto &l : loggers_)
-    {
-        l.second->flush();
-    }
-}
-
-SPDLOG_INLINE void registry::drop(const std::string &logger_name)
-{
-    std::lock_guard<std::mutex> lock(logger_map_mutex_);
-    loggers_.erase(logger_name);
-    if (default_logger_ && default_logger_->name() == logger_name)
-    {
-        default_logger_.reset();
-    }
-}
-
-SPDLOG_INLINE void registry::drop_all()
-{
-    std::lock_guard<std::mutex> lock(logger_map_mutex_);
-    loggers_.clear();
-    default_logger_.reset();
-}
-
-// clean all resources and threads started by the registry
-SPDLOG_INLINE void registry::shutdown()
-{
-    {
-        std::lock_guard<std::mutex> lock(flusher_mutex_);
-        periodic_flusher_.reset();
-    }
-
-    drop_all();
-
-    {
-        std::lock_guard<std::recursive_mutex> lock(tp_mutex_);
-        tp_.reset();
-    }
-}
-
-SPDLOG_INLINE std::recursive_mutex &registry::tp_mutex()
-{
-    return tp_mutex_;
-}
-
-SPDLOG_INLINE void registry::set_automatic_registration(bool automatic_regsistration)
-{
-    std::lock_guard<std::mutex> lock(logger_map_mutex_);
-    automatic_registration_ = automatic_regsistration;
-}
-
-SPDLOG_INLINE registry &registry::instance()
-{
-    static registry s_instance;
-    return s_instance;
-}
-
-SPDLOG_INLINE void registry::throw_if_exists_(const std::string &logger_name)
-{
-    if (loggers_.find(logger_name) != loggers_.end())
-    {
-        SPDLOG_THROW(spdlog_ex("logger with name '" + logger_name + "' already exists"));
-    }
-}
-
-SPDLOG_INLINE void registry::register_logger_(std::shared_ptr<logger> new_logger)
-{
-    auto logger_name = new_logger->name();
-    throw_if_exists_(logger_name);
-    loggers_[logger_name] = std::move(new_logger);
-}
-} // namespace details
-} // namespace spdlog

include/spdlog/details/registry.h

@@ -1,109 +0,0 @@
-// Copyright(c) 2015-present, Gabi Melman & spdlog contributors.
-// Distributed under the MIT License (http://opensource.org/licenses/MIT)
-
-#pragma once
-
-// Loggers registry of unique name->logger pointer
-// An attempt to create a logger with an already existing name will result with spdlog_ex exception.
-// If user requests a non existing logger, nullptr will be returned
-// This class is thread safe
-
-#include "spdlog/common.h"
-
-#include <chrono>
-#include <functional>
-#include <memory>
-#include <string>
-#include <unordered_map>
-#include <mutex>
-
-namespace spdlog {
-class logger;
-
-namespace details {
-class thread_pool;
-class periodic_worker;
-
-class registry
-{
-public:
-    registry(const registry &) = delete;
-    registry &operator=(const registry &) = delete;
-
-    void register_logger(std::shared_ptr<logger> new_logger);
-    void initialize_logger(std::shared_ptr<logger> new_logger);
-    std::shared_ptr<logger> get(const std::string &logger_name);
-    std::shared_ptr<logger> default_logger();
-
-    // Return raw ptr to the default logger.
-    // To be used directly by the spdlog default api (e.g. spdlog::info)
-    // This make the default API faster, but cannot be used concurrently with set_default_logger().
-    // e.g do not call set_default_logger() from one thread while calling spdlog::info() from another.
-    logger *get_default_raw();
-
-    // set default logger.
-    // default logger is stored in default_logger_ (for faster retrieval) and in the loggers_ map.
-    void set_default_logger(std::shared_ptr<logger> new_default_logger);
-
-    void set_tp(std::shared_ptr<thread_pool> tp);
-
-    std::shared_ptr<thread_pool> get_tp();
-
-    // Set global formatter. Each sink in each logger will get a clone of this object
-    void set_formatter(std::unique_ptr<formatter> formatter);
-
-    void enable_backtrace(size_t n_messages);
-
-    void disable_backtrace();
-
-    void set_level(level::level_enum log_level);
-
-    void flush_on(level::level_enum log_level);
-
-    void flush_every(std::chrono::seconds interval);
-
-    void set_error_handler(void (*handler)(const std::string &msg));
-
-    void apply_all(const std::function<void(const std::shared_ptr<logger>)> &fun);
-
-    void flush_all();
-
-    void drop(const std::string &logger_name);
-
-    void drop_all();
-
-    // clean all resources and threads started by the registry
-    void shutdown();
-
-    std::recursive_mutex &tp_mutex();
-
-    void set_automatic_registration(bool automatic_regsistration);
-
-    static registry &instance();
-
-private:
-    registry();
-    ~registry() = default;
-
-    void throw_if_exists_(const std::string &logger_name);
-    void register_logger_(std::shared_ptr<logger> new_logger);
-    std::mutex logger_map_mutex_, flusher_mutex_;
-    std::recursive_mutex tp_mutex_;
-    std::unordered_map<std::string, std::shared_ptr<logger>> loggers_;
-    std::unique_ptr<formatter> formatter_;
-    level::level_enum level_ = level::info;
-    level::level_enum flush_level_ = level::off;
-    void (*err_handler_)(const std::string &msg);
-    std::shared_ptr<thread_pool> tp_;
-    std::unique_ptr<periodic_worker> periodic_flusher_;
-    std::shared_ptr<logger> default_logger_;
-    bool automatic_registration_ = true;
-    size_t backtrace_n_messages_ = 0;
-};
-
-} // namespace details
-} // namespace spdlog
-
-#ifdef SPDLOG_HEADER_ONLY
-#include "registry-inl.h"
-#endif

include/spdlog/details/synchronous_factory.h

@@ -1,24 +0,0 @@
-// Copyright(c) 2015-present, Gabi Melman & spdlog contributors.
-// Distributed under the MIT License (http://opensource.org/licenses/MIT)
-
-#pragma once
-
-#include "registry.h"
-
-namespace spdlog {
-
-// Default logger factory-  creates synchronous loggers
-class logger;
-
-struct synchronous_factory
-{
-    template<typename Sink, typename... SinkArgs>
-    static std::shared_ptr<spdlog::logger> create(std::string logger_name, SinkArgs &&... args)
-    {
-        auto sink = std::make_shared<Sink>(std::forward<SinkArgs>(args)...);
-        auto new_logger = std::make_shared<spdlog::logger>(std::move(logger_name), std::move(sink));
-        details::registry::instance().initialize_logger(new_logger);
-        return new_logger;
-    }
-};
-} // namespace spdlog

include/spdlog/details/tcp_client_unix.h

@@ -0,0 +1,125 @@
+// Copyright(c) 2015-present, Gabi Melman & spdlog contributors.
+// Distributed under the MIT License (http://opensource.org/licenses/MIT)
+
+#pragma once
+
+#ifdef _WIN32
+    #error include tcp_client_windows.h instead
+#endif
+
+// tcp client helper
+#include <arpa/inet.h>
+#include <netdb.h>
+#include <netinet/in.h>
+#include <netinet/tcp.h>
+#include <string.h>
+#include <sys/socket.h>
+#include <unistd.h>
+
+#include <string>
+
+#include "../common.h"
+#include "./os.h"
+
+namespace spdlog {
+namespace details {
+class tcp_client_unix {
+    int socket_ = -1;
+
+public:
+    bool is_connected() const { return socket_ != -1; }
+
+    void close() {
+        if (is_connected()) {
+            ::close(socket_);
+            socket_ = -1;
+        }
+    }
+
+    int fd() const { return socket_; }
+
+    ~tcp_client_unix() { close(); }
+
+    // try to connect or throw on failure
+    void connect(const std::string &host, int port) {
+        close();
+        struct addrinfo hints {};
+        memset(&hints, 0, sizeof(struct addrinfo));
+        hints.ai_family = AF_UNSPEC;      // To work with IPv4, IPv6, and so on
+        hints.ai_socktype = SOCK_STREAM;  // TCP
+        hints.ai_flags = AI_NUMERICSERV;  // port passed as as numeric value
+        hints.ai_protocol = 0;
+
+        auto port_str = std::to_string(port);
+        struct addrinfo *addrinfo_result;
+        auto rv = ::getaddrinfo(host.c_str(), port_str.c_str(), &hints, &addrinfo_result);
+        if (rv != 0) {
+            throw_spdlog_ex(fmt_lib::format("::getaddrinfo failed: {}", gai_strerror(rv)));
+        }
+
+        // Try each address until we successfully connect(2).
+        int last_errno = 0;
+        for (auto *rp = addrinfo_result; rp != nullptr; rp = rp->ai_next) {
+#if defined(SOCK_CLOEXEC)
+            constexpr int flags = SOCK_CLOEXEC;
+#else
+            constexpr int flags = 0;
+#endif
+            socket_ = ::socket(rp->ai_family, rp->ai_socktype | flags, rp->ai_protocol);
+            if (socket_ == -1) {
+                last_errno = errno;
+                continue;
+            }
+            rv = ::connect(socket_, rp->ai_addr, rp->ai_addrlen);
+            if (rv == 0) {
+                break;
+            }
+            last_errno = errno;
+            ::close(socket_);
+            socket_ = -1;
+        }
+        ::freeaddrinfo(addrinfo_result);
+        if (socket_ == -1) {
+            throw_spdlog_ex("::connect failed", last_errno);
+        }
+
+        // set TCP_NODELAY
+        int enable_flag = 1;
+        ::setsockopt(socket_, IPPROTO_TCP, TCP_NODELAY, reinterpret_cast<char *>(&enable_flag), sizeof(enable_flag));
+
+        // prevent sigpipe on systems where MSG_NOSIGNAL is not available
+#if defined(SO_NOSIGPIPE) && !defined(MSG_NOSIGNAL)
+        ::setsockopt(socket_, SOL_SOCKET, SO_NOSIGPIPE, reinterpret_cast<char *>(&enable_flag), sizeof(enable_flag));
+#endif
+
+#if !defined(SO_NOSIGPIPE) && !defined(MSG_NOSIGNAL)
+    #error "tcp_sink would raise SIGPIPE since neither SO_NOSIGPIPE nor MSG_NOSIGNAL are available"
+#endif
+    }
+
+    // Send exactly n_bytes of the given data.
+    // On error close the connection and throw.
+    void send(const char *data, size_t n_bytes) {
+        size_t bytes_sent = 0;
+        while (bytes_sent < n_bytes) {
+#if defined(MSG_NOSIGNAL)
+            const int send_flags = MSG_NOSIGNAL;
+#else
+            const int send_flags = 0;
+#endif
+            auto write_result = ::send(socket_, data + bytes_sent, n_bytes - bytes_sent, send_flags);
+            if (write_result < 0) {
+                close();
+                throw_spdlog_ex("write(2) failed", errno);
+            }
+
+            if (write_result == 0)  // (probably should not happen but in any case..)
+            {
+                break;
+            }
+            bytes_sent += static_cast<size_t>(write_result);
+        }
+    }
+};
+}  // namespace details
+}  // namespace spdlog

include/spdlog/details/tcp_client_windows.h

@@ -0,0 +1,133 @@
+// Copyright(c) 2015-present, Gabi Melman & spdlog contributors.
+// Distributed under the MIT License (http://opensource.org/licenses/MIT)
+
+#pragma once
+
+#define WIN32_LEAN_AND_MEAN
+// tcp client helper
+#include <stdio.h>
+#include <stdlib.h>
+#include <windows.h>
+#include <winsock2.h>
+#include <ws2tcpip.h>
+
+#include <string>
+
+#include "../common.h"
+#include "./os.h"
+
+#pragma comment(lib, "Ws2_32.lib")
+#pragma comment(lib, "Mswsock.lib")
+#pragma comment(lib, "AdvApi32.lib")
+
+namespace spdlog {
+namespace details {
+class tcp_client_unix {
+    SOCKET socket_ = INVALID_SOCKET;
+
+    static void init_winsock_() {
+        WSADATA wsaData;
+        auto rv = WSAStartup(MAKEWORD(2, 2), &wsaData);
+        if (rv != 0) {
+            throw_winsock_error_("WSAStartup failed", ::WSAGetLastError());
+        }
+    }
+
+    static void throw_winsock_error_(const std::string &msg, int last_error) {
+        char buf[512];
+        ::FormatMessageA(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS, NULL, last_error,
+                         MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), buf, (sizeof(buf) / sizeof(char)), NULL);
+
+        throw_spdlog_ex(fmt_lib::format("tcp_sink - {}: {}", msg, buf));
+    }
+
+public:
+    tcp_client_unix() { init_winsock_(); }
+
+    ~tcp_client_unix() {
+        close();
+        ::WSACleanup();
+    }
+
+    bool is_connected() const { return socket_ != INVALID_SOCKET; }
+
+    void close() {
+        ::closesocket(socket_);
+        socket_ = INVALID_SOCKET;
+    }
+
+    SOCKET fd() const { return socket_; }
+
+    // try to connect or throw on failure
+    void connect(const std::string &host, int port) {
+        if (is_connected()) {
+            close();
+        }
+        struct addrinfo hints {};
+        ZeroMemory(&hints, sizeof(hints));
+
+        hints.ai_family = AF_UNSPEC;      // To work with IPv4, IPv6, and so on
+        hints.ai_socktype = SOCK_STREAM;  // TCP
+        hints.ai_flags = AI_NUMERICSERV;  // port passed as as numeric value
+        hints.ai_protocol = 0;
+
+        auto port_str = std::to_string(port);
+        struct addrinfo *addrinfo_result;
+        auto rv = ::getaddrinfo(host.c_str(), port_str.c_str(), &hints, &addrinfo_result);
+        int last_error = 0;
+        if (rv != 0) {
+            last_error = ::WSAGetLastError();
+            WSACleanup();
+            throw_winsock_error_("getaddrinfo failed", last_error);
+        }
+
+        // Try each address until we successfully connect(2).
+
+        for (auto *rp = addrinfo_result; rp != nullptr; rp = rp->ai_next) {
+            socket_ = socket(rp->ai_family, rp->ai_socktype, rp->ai_protocol);
+            if (socket_ == INVALID_SOCKET) {
+                last_error = ::WSAGetLastError();
+                WSACleanup();
+                continue;
+            }
+            if (::connect(socket_, rp->ai_addr, (int)rp->ai_addrlen) == 0) {
+                break;
+            } else {
+                last_error = ::WSAGetLastError();
+                close();
+            }
+        }
+        ::freeaddrinfo(addrinfo_result);
+        if (socket_ == INVALID_SOCKET) {
+            WSACleanup();
+            throw_winsock_error_("connect failed", last_error);
+        }
+
+        // set TCP_NODELAY
+        int enable_flag = 1;
+        ::setsockopt(socket_, IPPROTO_TCP, TCP_NODELAY, reinterpret_cast<char *>(&enable_flag), sizeof(enable_flag));
+    }
+
+    // Send exactly n_bytes of the given data.
+    // On error close the connection and throw.
+    void send(const char *data, size_t n_bytes) {
+        size_t bytes_sent = 0;
+        while (bytes_sent < n_bytes) {
+            const int send_flags = 0;
+            auto write_result = ::send(socket_, data + bytes_sent, (int)(n_bytes - bytes_sent), send_flags);
+            if (write_result == SOCKET_ERROR) {
+                int last_error = ::WSAGetLastError();
+                close();
+                throw_winsock_error_("send failed", last_error);
+            }
+
+            if (write_result == 0)  // (probably should not happen but in any case..)
+            {
+                break;
+            }
+            bytes_sent += static_cast<size_t>(write_result);
+        }
+    }
+};
+}  // namespace details
+}  // namespace spdlog

include/spdlog/details/thread_pool-inl.h

@@ -1,127 +0,0 @@
-// Copyright(c) 2015-present, Gabi Melman & spdlog contributors.
-// Distributed under the MIT License (http://opensource.org/licenses/MIT)
-
-#pragma once
-
-#ifndef SPDLOG_HEADER_ONLY
-#include "spdlog/details/thread_pool.h"
-#endif
-
-#include "spdlog/common.h"
-
-namespace spdlog {
-namespace details {
-
-SPDLOG_INLINE thread_pool::thread_pool(size_t q_max_items, size_t threads_n, std::function<void()> on_thread_start)
-    : q_(q_max_items)
-{
-    if (threads_n == 0 || threads_n > 1000)
-    {
-        SPDLOG_THROW(spdlog_ex("spdlog::thread_pool(): invalid threads_n param (valid "
-                               "range is 1-1000)"));
-    }
-    for (size_t i = 0; i < threads_n; i++)
-    {
-        threads_.emplace_back([this, on_thread_start] {
-            on_thread_start();
-            this->thread_pool::worker_loop_();
-        });
-    }
-}
-
-SPDLOG_INLINE thread_pool::thread_pool(size_t q_max_items, size_t threads_n)
-    : thread_pool(q_max_items, threads_n, [] {})
-{}
-
-// message all threads to terminate gracefully join them
-SPDLOG_INLINE thread_pool::~thread_pool()
-{
-    SPDLOG_TRY
-    {
-        for (size_t i = 0; i < threads_.size(); i++)
-        {
-            post_async_msg_(async_msg(async_msg_type::terminate), async_overflow_policy::block);
-        }
-
-        for (auto &t : threads_)
-        {
-            t.join();
-        }
-    }
-    SPDLOG_CATCH_ALL() {}
-}
-
-void SPDLOG_INLINE thread_pool::post_log(async_logger_ptr &&worker_ptr, const details::log_msg &msg, async_overflow_policy overflow_policy)
-{
-    async_msg async_m(std::move(worker_ptr), async_msg_type::log, msg);
-    post_async_msg_(std::move(async_m), overflow_policy);
-}
-
-void SPDLOG_INLINE thread_pool::post_flush(async_logger_ptr &&worker_ptr, async_overflow_policy overflow_policy)
-{
-    post_async_msg_(async_msg(std::move(worker_ptr), async_msg_type::flush), overflow_policy);
-}
-
-size_t SPDLOG_INLINE thread_pool::overrun_counter()
-{
-    return q_.overrun_counter();
-}
-
-void SPDLOG_INLINE thread_pool::post_async_msg_(async_msg &&new_msg, async_overflow_policy overflow_policy)
-{
-    if (overflow_policy == async_overflow_policy::block)
-    {
-        q_.enqueue(std::move(new_msg));
-    }
-    else
-    {
-        q_.enqueue_nowait(std::move(new_msg));
-    }
-}
-
-void SPDLOG_INLINE thread_pool::worker_loop_()
-{
-    while (process_next_msg_()) {};
-}
-
-// process next message in the queue
-// return true if this thread should still be active (while no terminate msg
-// was received)
-bool SPDLOG_INLINE thread_pool::process_next_msg_()
-{
-    async_msg incoming_async_msg;
-    bool dequeued = q_.dequeue_for(incoming_async_msg, std::chrono::seconds(10));
-    if (!dequeued)
-    {
-        return true;
-    }
-
-    switch (incoming_async_msg.msg_type)
-    {
-    case async_msg_type::log:
-    {
-        incoming_async_msg.worker_ptr->backend_sink_it_(incoming_async_msg);
-        return true;
-    }
-    case async_msg_type::flush:
-    {
-        incoming_async_msg.worker_ptr->backend_flush_();
-        return true;
-    }
-
-    case async_msg_type::terminate:
-    {
-        return false;
-    }
-
-    default:
-    {
-        assert(false && "Unexpected async_msg_type");
-    }
-    }
-
-    return true;
-}
-
-} // namespace details
-} // namespace spdlog

include/spdlog/details/thread_pool.h

@@ -1,120 +0,0 @@
-// Copyright(c) 2015-present, Gabi Melman & spdlog contributors.
-// Distributed under the MIT License (http://opensource.org/licenses/MIT)
-
-#pragma once
-
-#include "spdlog/details/log_msg_buffer.h"
-#include "spdlog/details/mpmc_blocking_q.h"
-#include "spdlog/details/os.h"
-
-#include <chrono>
-#include <memory>
-#include <thread>
-#include <vector>
-#include <functional>
-
-namespace spdlog {
-class async_logger;
-
-namespace details {
-
-using async_logger_ptr = std::shared_ptr<spdlog::async_logger>;
-
-enum class async_msg_type
-{
-    log,
-    flush,
-    terminate
-};
-
-#include "spdlog/details/log_msg_buffer.h"
-// Async msg to move to/from the queue
-// Movable only. should never be copied
-struct async_msg : log_msg_buffer
-{
-    async_msg_type msg_type{async_msg_type::log};
-    async_logger_ptr worker_ptr;
-
-    async_msg() = default;
-    ~async_msg() = default;
-
-    // should only be moved in or out of the queue..
-    async_msg(const async_msg &) = delete;
-
-// support for vs2013 move
-#if defined(_MSC_VER) && _MSC_VER <= 1800
-    async_msg(async_msg &&other)
-        : log_msg_buffer(std::move(other))
-        , msg_type(other.msg_type)
-        , worker_ptr(std::move(other.worker_ptr))
-    {}
-
-    async_msg &operator=(async_msg &&other)
-    {
-        *static_cast<log_msg_buffer *>(this) = std::move(other);
-        msg_type = other.msg_type;
-        worker_ptr = std::move(other.worker_ptr);
-        return *this;
-    }
-#else // (_MSC_VER) && _MSC_VER <= 1800
-    async_msg(async_msg &&) = default;
-    async_msg &operator=(async_msg &&) = default;
-#endif
-
-    // construct from log_msg with given type
-    async_msg(async_logger_ptr &&worker, async_msg_type the_type, const details::log_msg &m)
-        : log_msg_buffer{m}
-        , msg_type{the_type}
-        , worker_ptr{std::move(worker)}
-    {}
-
-    async_msg(async_logger_ptr &&worker, async_msg_type the_type)
-        : log_msg_buffer{}
-        , msg_type{the_type}
-        , worker_ptr{std::move(worker)}
-    {}
-
-    explicit async_msg(async_msg_type the_type)
-        : async_msg{nullptr, the_type}
-    {}
-};
-
-class thread_pool
-{
-public:
-    using item_type = async_msg;
-    using q_type = details::mpmc_blocking_queue<item_type>;
-
-    thread_pool(size_t q_max_items, size_t threads_n, std::function<void()> on_thread_start);
-    thread_pool(size_t q_max_items, size_t threads_n);
-
-    // message all threads to terminate gracefully join them
-    ~thread_pool();
-
-    thread_pool(const thread_pool &) = delete;
-    thread_pool &operator=(thread_pool &&) = delete;
-
-    void post_log(async_logger_ptr &&worker_ptr, const details::log_msg &msg, async_overflow_policy overflow_policy);
-    void post_flush(async_logger_ptr &&worker_ptr, async_overflow_policy overflow_policy);
-    size_t overrun_counter();
-
-private:
-    q_type q_;
-
-    std::vector<std::thread> threads_;
-
-    void post_async_msg_(async_msg &&new_msg, async_overflow_policy overflow_policy);
-    void worker_loop_();
-
-    // process next message in the queue
-    // return true if this thread should still be active (while no terminate msg
-    // was received)
-    bool process_next_msg_();
-};
-
-} // namespace details
-} // namespace spdlog
-
-#ifdef SPDLOG_HEADER_ONLY
-#include "thread_pool-inl.h"
-#endif

include/spdlog/details/udp_client_unix.h

@@ -0,0 +1,81 @@
+// Copyright(c) 2015-present, Gabi Melman & spdlog contributors.
+// Distributed under the MIT License (http://opensource.org/licenses/MIT)
+
+#pragma once
+
+// Helper RAII over unix udp client socket.
+// Will throw on construction if the socket creation failed.
+
+#include "../common.h"
+#include "./os.h"
+
+#ifdef _WIN32
+    #error "include udp_client_windows.h instead"
+#endif
+
+#include <arpa/inet.h>
+#include <netdb.h>
+#include <netinet/in.h>
+#include <netinet/udp.h>
+#include <sys/socket.h>
+#include <unistd.h>
+
+#include <cstring>
+#include <string>
+
+namespace spdlog {
+namespace details {
+
+class udp_client_unix {
+    static constexpr int TX_BUFFER_SIZE = 1024 * 10;
+    int socket_ = -1;
+    struct sockaddr_in sockAddr_;
+
+    void cleanup_() {
+        if (socket_ != -1) {
+            ::close(socket_);
+            socket_ = -1;
+        }
+    }
+
+public:
+    udp_client_unix(const std::string &host, uint16_t port) {
+        socket_ = ::socket(PF_INET, SOCK_DGRAM, 0);
+        if (socket_ < 0) {
+            throw_spdlog_ex("error: Create Socket Failed!");
+        }
+
+        int option_value = TX_BUFFER_SIZE;
+        if (::setsockopt(socket_, SOL_SOCKET, SO_SNDBUF, reinterpret_cast<const char *>(&option_value), sizeof(option_value)) <
+            0) {
+            cleanup_();
+            throw_spdlog_ex("error: setsockopt(SO_SNDBUF) Failed!");
+        }
+
+        sockAddr_.sin_family = AF_INET;
+        sockAddr_.sin_port = htons(port);
+
+        if (::inet_aton(host.c_str(), &sockAddr_.sin_addr) == 0) {
+            cleanup_();
+            throw_spdlog_ex("error: Invalid address!");
+        }
+
+        ::memset(sockAddr_.sin_zero, 0x00, sizeof(sockAddr_.sin_zero));
+    }
+
+    ~udp_client_unix() { cleanup_(); }
+
+    int fd() const { return socket_; }
+
+    // Send exactly n_bytes of the given data.
+    // On error close the connection and throw.
+    void send(const char *data, size_t n_bytes) {
+        ssize_t toslen = 0;
+        socklen_t tolen = sizeof(struct sockaddr);
+        if ((toslen = ::sendto(socket_, data, n_bytes, 0, (struct sockaddr *)&sockAddr_, tolen)) == -1) {
+            throw_spdlog_ex("sendto(2) failed", errno);
+        }
+    }
+};
+}  // namespace details
+}  // namespace spdlog

include/spdlog/details/udp_client_windows.h

@@ -0,0 +1,98 @@
+// Copyright(c) 2015-present, Gabi Melman & spdlog contributors.
+// Distributed under the MIT License (http://opensource.org/licenses/MIT)
+
+#pragma once
+
+// Helper RAII over winsock udp client socket.
+// Will throw on construction if socket creation failed.
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <winsock2.h>
+#include <ws2tcpip.h>
+
+#include <string>
+
+#include "../common.h"
+#include "./os.h"
+#include "./windows_include.h"
+
+#if defined(_MSC_VER)
+    #pragma comment(lib, "Ws2_32.lib")
+    #pragma comment(lib, "Mswsock.lib")
+    #pragma comment(lib, "AdvApi32.lib")
+#endif
+
+namespace spdlog {
+namespace details {
+class udp_client_unix {
+    static constexpr int TX_BUFFER_SIZE = 1024 * 10;
+    SOCKET socket_ = INVALID_SOCKET;
+    sockaddr_in addr_ = {};
+
+    static void init_winsock_() {
+        WSADATA wsaData;
+        auto rv = ::WSAStartup(MAKEWORD(2, 2), &wsaData);
+        if (rv != 0) {
+            throw_winsock_error_("WSAStartup failed", ::WSAGetLastError());
+        }
+    }
+
+    static void throw_winsock_error_(const std::string &msg, int last_error) {
+        char buf[512];
+        ::FormatMessageA(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS, NULL, last_error,
+                         MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), buf, (sizeof(buf) / sizeof(char)), NULL);
+
+        throw_spdlog_ex(fmt_lib::format("udp_sink - {}: {}", msg, buf));
+    }
+
+    void cleanup_() {
+        if (socket_ != INVALID_SOCKET) {
+            ::closesocket(socket_);
+        }
+        socket_ = INVALID_SOCKET;
+        ::WSACleanup();
+    }
+
+public:
+    udp_client_unix(const std::string &host, uint16_t port) {
+        init_winsock_();
+
+        addr_.sin_family = PF_INET;
+        addr_.sin_port = htons(port);
+        addr_.sin_addr.s_addr = INADDR_ANY;
+        if (InetPtonA(PF_INET, host.c_str(), &addr_.sin_addr.s_addr) != 1) {
+            int last_error = ::WSAGetLastError();
+            ::WSACleanup();
+            throw_winsock_error_("error: Invalid address!", last_error);
+        }
+
+        socket_ = ::socket(PF_INET, SOCK_DGRAM, 0);
+        if (socket_ == INVALID_SOCKET) {
+            int last_error = ::WSAGetLastError();
+            ::WSACleanup();
+            throw_winsock_error_("error: Create Socket failed", last_error);
+        }
+
+        int option_value = TX_BUFFER_SIZE;
+        if (::setsockopt(socket_, SOL_SOCKET, SO_SNDBUF, reinterpret_cast<const char *>(&option_value), sizeof(option_value)) <
+            0) {
+            int last_error = ::WSAGetLastError();
+            cleanup_();
+            throw_winsock_error_("error: setsockopt(SO_SNDBUF) Failed!", last_error);
+        }
+    }
+
+    ~udp_client_unix() { cleanup_(); }
+
+    SOCKET fd() const { return socket_; }
+
+    void send(const char *data, size_t n_bytes) {
+        socklen_t tolen = sizeof(struct sockaddr);
+        if (::sendto(socket_, data, static_cast<int>(n_bytes), 0, (struct sockaddr *)&addr_, tolen) == -1) {
+            throw_spdlog_ex("sendto(2) failed", errno);
+        }
+    }
+};
+}  // namespace details
+}  // namespace spdlog

include/spdlog/details/windows_include.h

@@ -0,0 +1,11 @@
+#pragma once
+
+#ifndef NOMINMAX
+    #define NOMINMAX  // prevent windows redefining min/max
+#endif
+
+#ifndef WIN32_LEAN_AND_MEAN
+    #define WIN32_LEAN_AND_MEAN
+#endif
+
+#include <windows.h>

include/spdlog/file_event_handlers.h

@@ -0,0 +1,20 @@
+#pragma once
+
+#include <functional>
+
+#include "./filename_t.h"
+
+namespace spdlog {
+struct file_event_handlers {
+    file_event_handlers()
+        : before_open(nullptr),
+          after_open(nullptr),
+          before_close(nullptr),
+          after_close(nullptr) {}
+
+    std::function<void(const filename_t &filename)> before_open;
+    std::function<void(const filename_t &filename, std::FILE *file_stream)> after_open;
+    std::function<void(const filename_t &filename, std::FILE *file_stream)> before_close;
+    std::function<void(const filename_t &filename)> after_close;
+};
+}  // namespace spdlog

include/spdlog/filename_t.h

@@ -0,0 +1,18 @@
+// Copyright(c) 2015-present, Gabi Melman & spdlog contributors.
+// Distributed under the MIT License (http://opensource.org/licenses/MIT)
+
+#pragma once
+
+#include <filesystem>
+
+#ifdef _WIN32
+    // In windows, add L prefix for filename literals (e.g. L"filename.txt")
+    #define SPDLOG_FILENAME_T_INNER(s) L##s
+    #define SPDLOG_FILENAME_T(s) SPDLOG_FILENAME_T_INNER(s)
+#else
+    #define SPDLOG_FILENAME_T(s) s
+#endif
+
+namespace spdlog {
+using filename_t = std::filesystem::path;
+}  // namespace spdlog

include/spdlog/fmt/bin_to_hex.h

@@ -1,175 +0,0 @@
-//
-// Copyright(c) 2015 Gabi Melman.
-// Distributed under the MIT License (http://opensource.org/licenses/MIT)
-//
-
-#pragma once
-
-//
-// Support for logging binary data as hex
-// format flags:
-// {:X} - print in uppercase.
-// {:s} - don't separate each byte with space.
-// {:p} - don't print the position on each line start.
-// {:n} - don't split the output to lines.
-
-//
-// Examples:
-//
-// std::vector<char> v(200, 0x0b);
-// logger->info("Some buffer {}", spdlog::to_hex(v));
-// char buf[128];
-// logger->info("Some buffer {:X}", spdlog::to_hex(std::begin(buf), std::end(buf)));
-
-namespace spdlog {
-namespace details {
-
-template<typename It>
-class bytes_range
-{
-public:
-    bytes_range(It range_begin, It range_end)
-        : begin_(range_begin)
-        , end_(range_end)
-    {}
-
-    It begin() const
-    {
-        return begin_;
-    }
-    It end() const
-    {
-        return end_;
-    }
-
-private:
-    It begin_, end_;
-};
-} // namespace details
-
-// create a bytes_range that wraps the given container
-template<typename Container>
-inline details::bytes_range<typename Container::const_iterator> to_hex(const Container &container)
-{
-    static_assert(sizeof(typename Container::value_type) == 1, "sizeof(Container::value_type) != 1");
-    using Iter = typename Container::const_iterator;
-    return details::bytes_range<Iter>(std::begin(container), std::end(container));
-}
-
-// create bytes_range from ranges
-template<typename It>
-inline details::bytes_range<It> to_hex(const It range_begin, const It range_end)
-{
-    return details::bytes_range<It>(range_begin, range_end);
-}
-
-} // namespace spdlog
-
-namespace fmt {
-
-template<typename T>
-struct formatter<spdlog::details::bytes_range<T>>
-{
-    const std::size_t line_size = 100;
-    const char delimiter = ' ';
-
-    bool put_newlines = true;
-    bool put_delimiters = true;
-    bool use_uppercase = false;
-    bool put_positions = true; // position on start of each line
-
-    // parse the format string flags
-    template<typename ParseContext>
-    auto parse(ParseContext &ctx) -> decltype(ctx.begin())
-    {
-        auto it = ctx.begin();
-        while (*it && *it != '}')
-        {
-            switch (*it)
-            {
-            case 'X':
-                use_uppercase = true;
-                break;
-            case 's':
-                put_delimiters = false;
-                break;
-            case 'p':
-                put_positions = false;
-                break;
-            case 'n':
-                put_newlines = false;
-                break;
-            }
-
-            ++it;
-        }
-        return it;
-    }
-
-    // format the given bytes range as hex
-    template<typename FormatContext, typename Container>
-    auto format(const spdlog::details::bytes_range<Container> &the_range, FormatContext &ctx) -> decltype(ctx.out())
-    {
-        SPDLOG_CONSTEXPR const char *hex_upper = "0123456789ABCDEF";
-        SPDLOG_CONSTEXPR const char *hex_lower = "0123456789abcdef";
-        const char *hex_chars = use_uppercase ? hex_upper : hex_lower;
-
-        std::size_t pos = 0;
-        std::size_t column = line_size;
-#if FMT_VERSION < 60000
-        auto inserter = ctx.begin();
-#else
-        auto inserter = ctx.out();
-#endif
-
-        for (auto &item : the_range)
-        {
-            auto ch = static_cast<unsigned char>(item);
-            pos++;
-
-            if (put_newlines && column >= line_size)
-            {
-                column = put_newline(inserter, pos);
-
-                // put first byte without delimiter in front of it
-                *inserter++ = hex_chars[(ch >> 4) & 0x0f];
-                *inserter++ = hex_chars[ch & 0x0f];
-                column += 2;
-                continue;
-            }
-
-            if (put_delimiters)
-            {
-                *inserter++ = delimiter;
-                ++column;
-            }
-
-            *inserter++ = hex_chars[(ch >> 4) & 0x0f];
-            *inserter++ = hex_chars[ch & 0x0f];
-            column += 2;
-        }
-        return inserter;
-    }
-
-    // put newline(and position header)
-    // return the next column
-    template<typename It>
-    std::size_t put_newline(It inserter, std::size_t pos)
-    {
-#ifdef _WIN32
-        *inserter++ = '\r';
-#endif
-        *inserter++ = '\n';
-
-        if (put_positions)
-        {
-            fmt::format_to(inserter, "{:<04X}: ", pos - 1);
-            return 7;
-        }
-        else
-        {
-            return 1;
-        }
-    }
-};
-} // namespace fmt

include/spdlog/fmt/bundled/LICENSE.rst

@@ -1,27 +0,0 @@
-Copyright (c) 2012 - present, Victor Zverovich
-
-Permission is hereby granted, free of charge, to any person obtaining
-a copy of this software and associated documentation files (the
-"Software"), to deal in the Software without restriction, including
-without limitation the rights to use, copy, modify, merge, publish,
-distribute, sublicense, and/or sell copies of the Software, and to
-permit persons to whom the Software is furnished to do so, subject to
-the following conditions:
-
-The above copyright notice and this permission notice shall be
-included in all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-
---- Optional exception to the license ---
-
-As an exception, if, as a result of your compiling your source code, portions
-of this Software are embedded into a machine-executable object form of such
-source code, you may redistribute such embedded portions in such object form
-without including the above copyright and permission notices.

include/spdlog/fmt/bundled/chrono.h

@@ -1,829 +0,0 @@
-// Formatting library for C++ - chrono support
-//
-// Copyright (c) 2012 - present, Victor Zverovich
-// All rights reserved.
-//
-// For the license information refer to format.h.
-
-#ifndef FMT_CHRONO_H_
-#define FMT_CHRONO_H_
-
-#include "format.h"
-#include "locale.h"
-
-#include <chrono>
-#include <ctime>
-#include <locale>
-#include <sstream>
-
-// enable safe chrono durations, unless explicitly disabled
-#ifndef FMT_SAFE_DURATION_CAST
-#  define FMT_SAFE_DURATION_CAST 1
-#endif
-
-#if FMT_SAFE_DURATION_CAST
-#  include "safe-duration-cast.h"
-#endif
-
-FMT_BEGIN_NAMESPACE
-
-// Prevents expansion of a preceding token as a function-style macro.
-// Usage: f FMT_NOMACRO()
-#define FMT_NOMACRO
-
-namespace internal {
-inline null<> localtime_r FMT_NOMACRO(...) { return null<>(); }
-inline null<> localtime_s(...) { return null<>(); }
-inline null<> gmtime_r(...) { return null<>(); }
-inline null<> gmtime_s(...) { return null<>(); }
-}  // namespace internal
-
-// Thread-safe replacement for std::localtime
-inline std::tm localtime(std::time_t time) {
-  struct dispatcher {
-    std::time_t time_;
-    std::tm tm_;
-
-    dispatcher(std::time_t t) : time_(t) {}
-
-    bool run() {
-      using namespace fmt::internal;
-      return handle(localtime_r(&time_, &tm_));
-    }
-
-    bool handle(std::tm* tm) { return tm != nullptr; }
-
-    bool handle(internal::null<>) {
-      using namespace fmt::internal;
-      return fallback(localtime_s(&tm_, &time_));
-    }
-
-    bool fallback(int res) { return res == 0; }
-
-#if !FMT_MSC_VER
-    bool fallback(internal::null<>) {
-      using namespace fmt::internal;
-      std::tm* tm = std::localtime(&time_);
-      if (tm) tm_ = *tm;
-      return tm != nullptr;
-    }
-#endif
-  };
-  dispatcher lt(time);
-  // Too big time values may be unsupported.
-  if (!lt.run()) FMT_THROW(format_error("time_t value out of range"));
-  return lt.tm_;
-}
-
-// Thread-safe replacement for std::gmtime
-inline std::tm gmtime(std::time_t time) {
-  struct dispatcher {
-    std::time_t time_;
-    std::tm tm_;
-
-    dispatcher(std::time_t t) : time_(t) {}
-
-    bool run() {
-      using namespace fmt::internal;
-      return handle(gmtime_r(&time_, &tm_));
-    }
-
-    bool handle(std::tm* tm) { return tm != nullptr; }
-
-    bool handle(internal::null<>) {
-      using namespace fmt::internal;
-      return fallback(gmtime_s(&tm_, &time_));
-    }
-
-    bool fallback(int res) { return res == 0; }
-
-#if !FMT_MSC_VER
-    bool fallback(internal::null<>) {
-      std::tm* tm = std::gmtime(&time_);
-      if (tm) tm_ = *tm;
-      return tm != nullptr;
-    }
-#endif
-  };
-  dispatcher gt(time);
-  // Too big time values may be unsupported.
-  if (!gt.run()) FMT_THROW(format_error("time_t value out of range"));
-  return gt.tm_;
-}
-
-namespace internal {
-inline std::size_t strftime(char* str, std::size_t count, const char* format,
-                            const std::tm* time) {
-  return std::strftime(str, count, format, time);
-}
-
-inline std::size_t strftime(wchar_t* str, std::size_t count,
-                            const wchar_t* format, const std::tm* time) {
-  return std::wcsftime(str, count, format, time);
-}
-}  // namespace internal
-
-template <typename Char> struct formatter<std::tm, Char> {
-  template <typename ParseContext>
-  auto parse(ParseContext& ctx) -> decltype(ctx.begin()) {
-    auto it = ctx.begin();
-    if (it != ctx.end() && *it == ':') ++it;
-    auto end = it;
-    while (end != ctx.end() && *end != '}') ++end;
-    tm_format.reserve(internal::to_unsigned(end - it + 1));
-    tm_format.append(it, end);
-    tm_format.push_back('\0');
-    return end;
-  }
-
-  template <typename FormatContext>
-  auto format(const std::tm& tm, FormatContext& ctx) -> decltype(ctx.out()) {
-    basic_memory_buffer<Char> buf;
-    std::size_t start = buf.size();
-    for (;;) {
-      std::size_t size = buf.capacity() - start;
-      std::size_t count =
-          internal::strftime(&buf[start], size, &tm_format[0], &tm);
-      if (count != 0) {
-        buf.resize(start + count);
-        break;
-      }
-      if (size >= tm_format.size() * 256) {
-        // If the buffer is 256 times larger than the format string, assume
-        // that `strftime` gives an empty result. There doesn't seem to be a
-        // better way to distinguish the two cases:
-        // https://github.com/fmtlib/fmt/issues/367
-        break;
-      }
-      const std::size_t MIN_GROWTH = 10;
-      buf.reserve(buf.capacity() + (size > MIN_GROWTH ? size : MIN_GROWTH));
-    }
-    return std::copy(buf.begin(), buf.end(), ctx.out());
-  }
-
-  basic_memory_buffer<Char> tm_format;
-};
-
-namespace internal {
-template <typename Period> FMT_CONSTEXPR const char* get_units() {
-  return nullptr;
-}
-template <> FMT_CONSTEXPR const char* get_units<std::atto>() { return "as"; }
-template <> FMT_CONSTEXPR const char* get_units<std::femto>() { return "fs"; }
-template <> FMT_CONSTEXPR const char* get_units<std::pico>() { return "ps"; }
-template <> FMT_CONSTEXPR const char* get_units<std::nano>() { return "ns"; }
-template <> FMT_CONSTEXPR const char* get_units<std::micro>() { return "µs"; }
-template <> FMT_CONSTEXPR const char* get_units<std::milli>() { return "ms"; }
-template <> FMT_CONSTEXPR const char* get_units<std::centi>() { return "cs"; }
-template <> FMT_CONSTEXPR const char* get_units<std::deci>() { return "ds"; }
-template <> FMT_CONSTEXPR const char* get_units<std::ratio<1>>() { return "s"; }
-template <> FMT_CONSTEXPR const char* get_units<std::deca>() { return "das"; }
-template <> FMT_CONSTEXPR const char* get_units<std::hecto>() { return "hs"; }
-template <> FMT_CONSTEXPR const char* get_units<std::kilo>() { return "ks"; }
-template <> FMT_CONSTEXPR const char* get_units<std::mega>() { return "Ms"; }
-template <> FMT_CONSTEXPR const char* get_units<std::giga>() { return "Gs"; }
-template <> FMT_CONSTEXPR const char* get_units<std::tera>() { return "Ts"; }
-template <> FMT_CONSTEXPR const char* get_units<std::peta>() { return "Ps"; }
-template <> FMT_CONSTEXPR const char* get_units<std::exa>() { return "Es"; }
-template <> FMT_CONSTEXPR const char* get_units<std::ratio<60>>() {
-  return "m";
-}
-template <> FMT_CONSTEXPR const char* get_units<std::ratio<3600>>() {
-  return "h";
-}
-
-enum class numeric_system {
-  standard,
-  // Alternative numeric system, e.g. 十二 instead of 12 in ja_JP locale.
-  alternative
-};
-
-// Parses a put_time-like format string and invokes handler actions.
-template <typename Char, typename Handler>
-FMT_CONSTEXPR const Char* parse_chrono_format(const Char* begin,
-                                              const Char* end,
-                                              Handler&& handler) {
-  auto ptr = begin;
-  while (ptr != end) {
-    auto c = *ptr;
-    if (c == '}') break;
-    if (c != '%') {
-      ++ptr;
-      continue;
-    }
-    if (begin != ptr) handler.on_text(begin, ptr);
-    ++ptr;  // consume '%'
-    if (ptr == end) FMT_THROW(format_error("invalid format"));
-    c = *ptr++;
-    switch (c) {
-    case '%':
-      handler.on_text(ptr - 1, ptr);
-      break;
-    case 'n': {
-      const char newline[] = "\n";
-      handler.on_text(newline, newline + 1);
-      break;
-    }
-    case 't': {
-      const char tab[] = "\t";
-      handler.on_text(tab, tab + 1);
-      break;
-    }
-    // Day of the week:
-    case 'a':
-      handler.on_abbr_weekday();
-      break;
-    case 'A':
-      handler.on_full_weekday();
-      break;
-    case 'w':
-      handler.on_dec0_weekday(numeric_system::standard);
-      break;
-    case 'u':
-      handler.on_dec1_weekday(numeric_system::standard);
-      break;
-    // Month:
-    case 'b':
-      handler.on_abbr_month();
-      break;
-    case 'B':
-      handler.on_full_month();
-      break;
-    // Hour, minute, second:
-    case 'H':
-      handler.on_24_hour(numeric_system::standard);
-      break;
-    case 'I':
-      handler.on_12_hour(numeric_system::standard);
-      break;
-    case 'M':
-      handler.on_minute(numeric_system::standard);
-      break;
-    case 'S':
-      handler.on_second(numeric_system::standard);
-      break;
-    // Other:
-    case 'c':
-      handler.on_datetime(numeric_system::standard);
-      break;
-    case 'x':
-      handler.on_loc_date(numeric_system::standard);
-      break;
-    case 'X':
-      handler.on_loc_time(numeric_system::standard);
-      break;
-    case 'D':
-      handler.on_us_date();
-      break;
-    case 'F':
-      handler.on_iso_date();
-      break;
-    case 'r':
-      handler.on_12_hour_time();
-      break;
-    case 'R':
-      handler.on_24_hour_time();
-      break;
-    case 'T':
-      handler.on_iso_time();
-      break;
-    case 'p':
-      handler.on_am_pm();
-      break;
-    case 'Q':
-      handler.on_duration_value();
-      break;
-    case 'q':
-      handler.on_duration_unit();
-      break;
-    case 'z':
-      handler.on_utc_offset();
-      break;
-    case 'Z':
-      handler.on_tz_name();
-      break;
-    // Alternative representation:
-    case 'E': {
-      if (ptr == end) FMT_THROW(format_error("invalid format"));
-      c = *ptr++;
-      switch (c) {
-      case 'c':
-        handler.on_datetime(numeric_system::alternative);
-        break;
-      case 'x':
-        handler.on_loc_date(numeric_system::alternative);
-        break;
-      case 'X':
-        handler.on_loc_time(numeric_system::alternative);
-        break;
-      default:
-        FMT_THROW(format_error("invalid format"));
-      }
-      break;
-    }
-    case 'O':
-      if (ptr == end) FMT_THROW(format_error("invalid format"));
-      c = *ptr++;
-      switch (c) {
-      case 'w':
-        handler.on_dec0_weekday(numeric_system::alternative);
-        break;
-      case 'u':
-        handler.on_dec1_weekday(numeric_system::alternative);
-        break;
-      case 'H':
-        handler.on_24_hour(numeric_system::alternative);
-        break;
-      case 'I':
-        handler.on_12_hour(numeric_system::alternative);
-        break;
-      case 'M':
-        handler.on_minute(numeric_system::alternative);
-        break;
-      case 'S':
-        handler.on_second(numeric_system::alternative);
-        break;
-      default:
-        FMT_THROW(format_error("invalid format"));
-      }
-      break;
-    default:
-      FMT_THROW(format_error("invalid format"));
-    }
-    begin = ptr;
-  }
-  if (begin != ptr) handler.on_text(begin, ptr);
-  return ptr;
-}
-
-struct chrono_format_checker {
-  FMT_NORETURN void report_no_date() { FMT_THROW(format_error("no date")); }
-
-  template <typename Char> void on_text(const Char*, const Char*) {}
-  FMT_NORETURN void on_abbr_weekday() { report_no_date(); }
-  FMT_NORETURN void on_full_weekday() { report_no_date(); }
-  FMT_NORETURN void on_dec0_weekday(numeric_system) { report_no_date(); }
-  FMT_NORETURN void on_dec1_weekday(numeric_system) { report_no_date(); }
-  FMT_NORETURN void on_abbr_month() { report_no_date(); }
-  FMT_NORETURN void on_full_month() { report_no_date(); }
-  void on_24_hour(numeric_system) {}
-  void on_12_hour(numeric_system) {}
-  void on_minute(numeric_system) {}
-  void on_second(numeric_system) {}
-  FMT_NORETURN void on_datetime(numeric_system) { report_no_date(); }
-  FMT_NORETURN void on_loc_date(numeric_system) { report_no_date(); }
-  FMT_NORETURN void on_loc_time(numeric_system) { report_no_date(); }
-  FMT_NORETURN void on_us_date() { report_no_date(); }
-  FMT_NORETURN void on_iso_date() { report_no_date(); }
-  void on_12_hour_time() {}
-  void on_24_hour_time() {}
-  void on_iso_time() {}
-  void on_am_pm() {}
-  void on_duration_value() {}
-  void on_duration_unit() {}
-  FMT_NORETURN void on_utc_offset() { report_no_date(); }
-  FMT_NORETURN void on_tz_name() { report_no_date(); }
-};
-
-template <typename T, FMT_ENABLE_IF(std::is_integral<T>::value)>
-inline bool isnan(T) {
-  return false;
-}
-template <typename T, FMT_ENABLE_IF(std::is_floating_point<T>::value)>
-inline bool isnan(T value) {
-  return std::isnan(value);
-}
-
-template <typename T, FMT_ENABLE_IF(std::is_integral<T>::value)>
-inline bool isfinite(T) {
-  return true;
-}
-template <typename T, FMT_ENABLE_IF(std::is_floating_point<T>::value)>
-inline bool isfinite(T value) {
-  return std::isfinite(value);
-}
-
-// Convers value to int and checks that it's in the range [0, upper).
-template <typename T, FMT_ENABLE_IF(std::is_integral<T>::value)>
-inline int to_nonnegative_int(T value, int upper) {
-  FMT_ASSERT(value >= 0 && value <= upper, "invalid value");
-  (void)upper;
-  return static_cast<int>(value);
-}
-template <typename T, FMT_ENABLE_IF(!std::is_integral<T>::value)>
-inline int to_nonnegative_int(T value, int upper) {
-  FMT_ASSERT(
-      std::isnan(value) || (value >= 0 && value <= static_cast<T>(upper)),
-      "invalid value");
-  (void)upper;
-  return static_cast<int>(value);
-}
-
-template <typename T, FMT_ENABLE_IF(std::is_integral<T>::value)>
-inline T mod(T x, int y) {
-  return x % y;
-}
-template <typename T, FMT_ENABLE_IF(std::is_floating_point<T>::value)>
-inline T mod(T x, int y) {
-  return std::fmod(x, static_cast<T>(y));
-}
-
-// If T is an integral type, maps T to its unsigned counterpart, otherwise
-// leaves it unchanged (unlike std::make_unsigned).
-template <typename T, bool INTEGRAL = std::is_integral<T>::value>
-struct make_unsigned_or_unchanged {
-  using type = T;
-};
-
-template <typename T> struct make_unsigned_or_unchanged<T, true> {
-  using type = typename std::make_unsigned<T>::type;
-};
-
-#if FMT_SAFE_DURATION_CAST
-// throwing version of safe_duration_cast
-template <typename To, typename FromRep, typename FromPeriod>
-To fmt_safe_duration_cast(std::chrono::duration<FromRep, FromPeriod> from) {
-  int ec;
-  To to = safe_duration_cast::safe_duration_cast<To>(from, ec);
-  if (ec) FMT_THROW(format_error("cannot format duration"));
-  return to;
-}
-#endif
-
-template <typename Rep, typename Period,
-          FMT_ENABLE_IF(std::is_integral<Rep>::value)>
-inline std::chrono::duration<Rep, std::milli> get_milliseconds(
-    std::chrono::duration<Rep, Period> d) {
-  // this may overflow and/or the result may not fit in the
-  // target type.
-#if FMT_SAFE_DURATION_CAST
-  using CommonSecondsType =
-      typename std::common_type<decltype(d), std::chrono::seconds>::type;
-  const auto d_as_common = fmt_safe_duration_cast<CommonSecondsType>(d);
-  const auto d_as_whole_seconds =
-      fmt_safe_duration_cast<std::chrono::seconds>(d_as_common);
-  // this conversion should be nonproblematic
-  const auto diff = d_as_common - d_as_whole_seconds;
-  const auto ms =
-      fmt_safe_duration_cast<std::chrono::duration<Rep, std::milli>>(diff);
-  return ms;
-#else
-  auto s = std::chrono::duration_cast<std::chrono::seconds>(d);
-  return std::chrono::duration_cast<std::chrono::milliseconds>(d - s);
-#endif
-}
-
-template <typename Rep, typename Period,
-          FMT_ENABLE_IF(std::is_floating_point<Rep>::value)>
-inline std::chrono::duration<Rep, std::milli> get_milliseconds(
-    std::chrono::duration<Rep, Period> d) {
-  using common_type = typename std::common_type<Rep, std::intmax_t>::type;
-  auto ms = mod(d.count() * static_cast<common_type>(Period::num) /
-                    static_cast<common_type>(Period::den) * 1000,
-                1000);
-  return std::chrono::duration<Rep, std::milli>(static_cast<Rep>(ms));
-}
-
-template <typename Rep, typename OutputIt>
-OutputIt format_chrono_duration_value(OutputIt out, Rep val, int precision) {
-  if (precision >= 0) return format_to(out, "{:.{}f}", val, precision);
-  return format_to(out, std::is_floating_point<Rep>::value ? "{:g}" : "{}",
-                   val);
-}
-
-template <typename Period, typename OutputIt>
-static OutputIt format_chrono_duration_unit(OutputIt out) {
-  if (const char* unit = get_units<Period>()) return format_to(out, "{}", unit);
-  if (Period::den == 1) return format_to(out, "[{}]s", Period::num);
-  return format_to(out, "[{}/{}]s", Period::num, Period::den);
-}
-
-template <typename FormatContext, typename OutputIt, typename Rep,
-          typename Period>
-struct chrono_formatter {
-  FormatContext& context;
-  OutputIt out;
-  int precision;
-  // rep is unsigned to avoid overflow.
-  using rep =
-      conditional_t<std::is_integral<Rep>::value && sizeof(Rep) < sizeof(int),
-                    unsigned, typename make_unsigned_or_unchanged<Rep>::type>;
-  rep val;
-  using seconds = std::chrono::duration<rep>;
-  seconds s;
-  using milliseconds = std::chrono::duration<rep, std::milli>;
-  bool negative;
-
-  using char_type = typename FormatContext::char_type;
-
-  explicit chrono_formatter(FormatContext& ctx, OutputIt o,
-                            std::chrono::duration<Rep, Period> d)
-      : context(ctx), out(o), val(d.count()), negative(false) {
-    if (d.count() < 0) {
-      val = 0 - val;
-      negative = true;
-    }
-
-    // this may overflow and/or the result may not fit in the
-    // target type.
-#if FMT_SAFE_DURATION_CAST
-    // might need checked conversion (rep!=Rep)
-    auto tmpval = std::chrono::duration<rep, Period>(val);
-    s = fmt_safe_duration_cast<seconds>(tmpval);
-#else
-    s = std::chrono::duration_cast<seconds>(
-        std::chrono::duration<rep, Period>(val));
-#endif
-  }
-
-  // returns true if nan or inf, writes to out.
-  bool handle_nan_inf() {
-    if (isfinite(val)) {
-      return false;
-    }
-    if (isnan(val)) {
-      write_nan();
-      return true;
-    }
-    // must be +-inf
-    if (val > 0) {
-      write_pinf();
-    } else {
-      write_ninf();
-    }
-    return true;
-  }
-
-  Rep hour() const { return static_cast<Rep>(mod((s.count() / 3600), 24)); }
-
-  Rep hour12() const {
-    Rep hour = static_cast<Rep>(mod((s.count() / 3600), 12));
-    return hour <= 0 ? 12 : hour;
-  }
-
-  Rep minute() const { return static_cast<Rep>(mod((s.count() / 60), 60)); }
-  Rep second() const { return static_cast<Rep>(mod(s.count(), 60)); }
-
-  std::tm time() const {
-    auto time = std::tm();
-    time.tm_hour = to_nonnegative_int(hour(), 24);
-    time.tm_min = to_nonnegative_int(minute(), 60);
-    time.tm_sec = to_nonnegative_int(second(), 60);
-    return time;
-  }
-
-  void write_sign() {
-    if (negative) {
-      *out++ = '-';
-      negative = false;
-    }
-  }
-
-  void write(Rep value, int width) {
-    write_sign();
-    if (isnan(value)) return write_nan();
-    uint32_or_64_t<int> n = to_unsigned(
-        to_nonnegative_int(value, (std::numeric_limits<int>::max)()));
-    int num_digits = internal::count_digits(n);
-    if (width > num_digits) out = std::fill_n(out, width - num_digits, '0');
-    out = format_decimal<char_type>(out, n, num_digits);
-  }
-
-  void write_nan() { std::copy_n("nan", 3, out); }
-  void write_pinf() { std::copy_n("inf", 3, out); }
-  void write_ninf() { std::copy_n("-inf", 4, out); }
-
-  void format_localized(const tm& time, const char* format) {
-    if (isnan(val)) return write_nan();
-    auto locale = context.locale().template get<std::locale>();
-    auto& facet = std::use_facet<std::time_put<char_type>>(locale);
-    std::basic_ostringstream<char_type> os;
-    os.imbue(locale);
-    facet.put(os, os, ' ', &time, format, format + std::strlen(format));
-    auto str = os.str();
-    std::copy(str.begin(), str.end(), out);
-  }
-
-  void on_text(const char_type* begin, const char_type* end) {
-    std::copy(begin, end, out);
-  }
-
-  // These are not implemented because durations don't have date information.
-  void on_abbr_weekday() {}
-  void on_full_weekday() {}
-  void on_dec0_weekday(numeric_system) {}
-  void on_dec1_weekday(numeric_system) {}
-  void on_abbr_month() {}
-  void on_full_month() {}
-  void on_datetime(numeric_system) {}
-  void on_loc_date(numeric_system) {}
-  void on_loc_time(numeric_system) {}
-  void on_us_date() {}
-  void on_iso_date() {}
-  void on_utc_offset() {}
-  void on_tz_name() {}
-
-  void on_24_hour(numeric_system ns) {
-    if (handle_nan_inf()) return;
-
-    if (ns == numeric_system::standard) return write(hour(), 2);
-    auto time = tm();
-    time.tm_hour = to_nonnegative_int(hour(), 24);
-    format_localized(time, "%OH");
-  }
-
-  void on_12_hour(numeric_system ns) {
-    if (handle_nan_inf()) return;
-
-    if (ns == numeric_system::standard) return write(hour12(), 2);
-    auto time = tm();
-    time.tm_hour = to_nonnegative_int(hour12(), 12);
-    format_localized(time, "%OI");
-  }
-
-  void on_minute(numeric_system ns) {
-    if (handle_nan_inf()) return;
-
-    if (ns == numeric_system::standard) return write(minute(), 2);
-    auto time = tm();
-    time.tm_min = to_nonnegative_int(minute(), 60);
-    format_localized(time, "%OM");
-  }
-
-  void on_second(numeric_system ns) {
-    if (handle_nan_inf()) return;
-
-    if (ns == numeric_system::standard) {
-      write(second(), 2);
-#if FMT_SAFE_DURATION_CAST
-      // convert rep->Rep
-      using duration_rep = std::chrono::duration<rep, Period>;
-      using duration_Rep = std::chrono::duration<Rep, Period>;
-      auto tmpval = fmt_safe_duration_cast<duration_Rep>(duration_rep{val});
-#else
-      auto tmpval = std::chrono::duration<Rep, Period>(val);
-#endif
-      auto ms = get_milliseconds(tmpval);
-      if (ms != std::chrono::milliseconds(0)) {
-        *out++ = '.';
-        write(ms.count(), 3);
-      }
-      return;
-    }
-    auto time = tm();
-    time.tm_sec = to_nonnegative_int(second(), 60);
-    format_localized(time, "%OS");
-  }
-
-  void on_12_hour_time() {
-    if (handle_nan_inf()) return;
-
-    format_localized(time(), "%r");
-  }
-
-  void on_24_hour_time() {
-    if (handle_nan_inf()) {
-      *out++ = ':';
-      handle_nan_inf();
-      return;
-    }
-
-    write(hour(), 2);
-    *out++ = ':';
-    write(minute(), 2);
-  }
-
-  void on_iso_time() {
-    on_24_hour_time();
-    *out++ = ':';
-    if (handle_nan_inf()) return;
-    write(second(), 2);
-  }
-
-  void on_am_pm() {
-    if (handle_nan_inf()) return;
-    format_localized(time(), "%p");
-  }
-
-  void on_duration_value() {
-    if (handle_nan_inf()) return;
-    write_sign();
-    out = format_chrono_duration_value(out, val, precision);
-  }
-
-  void on_duration_unit() { out = format_chrono_duration_unit<Period>(out); }
-};
-}  // namespace internal
-
-template <typename Rep, typename Period, typename Char>
-struct formatter<std::chrono::duration<Rep, Period>, Char> {
- private:
-  basic_format_specs<Char> specs;
-  int precision;
-  using arg_ref_type = internal::arg_ref<Char>;
-  arg_ref_type width_ref;
-  arg_ref_type precision_ref;
-  mutable basic_string_view<Char> format_str;
-  using duration = std::chrono::duration<Rep, Period>;
-
-  struct spec_handler {
-    formatter& f;
-    basic_parse_context<Char>& context;
-    basic_string_view<Char> format_str;
-
-    template <typename Id> FMT_CONSTEXPR arg_ref_type make_arg_ref(Id arg_id) {
-      context.check_arg_id(arg_id);
-      return arg_ref_type(arg_id);
-    }
-
-    FMT_CONSTEXPR arg_ref_type make_arg_ref(basic_string_view<Char> arg_id) {
-      context.check_arg_id(arg_id);
-      const auto str_val = internal::string_view_metadata(format_str, arg_id);
-      return arg_ref_type(str_val);
-    }
-
-    FMT_CONSTEXPR arg_ref_type make_arg_ref(internal::auto_id) {
-      return arg_ref_type(context.next_arg_id());
-    }
-
-    void on_error(const char* msg) { FMT_THROW(format_error(msg)); }
-    void on_fill(Char fill) { f.specs.fill[0] = fill; }
-    void on_align(align_t align) { f.specs.align = align; }
-    void on_width(unsigned width) { f.specs.width = width; }
-    void on_precision(unsigned precision) { f.precision = precision; }
-    void end_precision() {}
-
-    template <typename Id> void on_dynamic_width(Id arg_id) {
-      f.width_ref = make_arg_ref(arg_id);
-    }
-
-    template <typename Id> void on_dynamic_precision(Id arg_id) {
-      f.precision_ref = make_arg_ref(arg_id);
-    }
-  };
-
-  using iterator = typename basic_parse_context<Char>::iterator;
-  struct parse_range {
-    iterator begin;
-    iterator end;
-  };
-
-  FMT_CONSTEXPR parse_range do_parse(basic_parse_context<Char>& ctx) {
-    auto begin = ctx.begin(), end = ctx.end();
-    if (begin == end || *begin == '}') return {begin, begin};
-    spec_handler handler{*this, ctx, format_str};
-    begin = internal::parse_align(begin, end, handler);
-    if (begin == end) return {begin, begin};
-    begin = internal::parse_width(begin, end, handler);
-    if (begin == end) return {begin, begin};
-    if (*begin == '.') {
-      if (std::is_floating_point<Rep>::value)
-        begin = internal::parse_precision(begin, end, handler);
-      else
-        handler.on_error("precision not allowed for this argument type");
-    }
-    end = parse_chrono_format(begin, end, internal::chrono_format_checker());
-    return {begin, end};
-  }
-
- public:
-  formatter() : precision(-1) {}
-
-  FMT_CONSTEXPR auto parse(basic_parse_context<Char>& ctx)
-      -> decltype(ctx.begin()) {
-    auto range = do_parse(ctx);
-    format_str = basic_string_view<Char>(
-        &*range.begin, internal::to_unsigned(range.end - range.begin));
-    return range.end;
-  }
-
-  template <typename FormatContext>
-  auto format(const duration& d, FormatContext& ctx) -> decltype(ctx.out()) {
-    auto begin = format_str.begin(), end = format_str.end();
-    // As a possible future optimization, we could avoid extra copying if width
-    // is not specified.
-    basic_memory_buffer<Char> buf;
-    auto out = std::back_inserter(buf);
-    using range = internal::output_range<decltype(ctx.out()), Char>;
-    internal::basic_writer<range> w(range(ctx.out()));
-    internal::handle_dynamic_spec<internal::width_checker>(
-        specs.width, width_ref, ctx, format_str.begin());
-    internal::handle_dynamic_spec<internal::precision_checker>(
-        precision, precision_ref, ctx, format_str.begin());
-    if (begin == end || *begin == '}') {
-      out = internal::format_chrono_duration_value(out, d.count(), precision);
-      internal::format_chrono_duration_unit<Period>(out);
-    } else {
-      internal::chrono_formatter<FormatContext, decltype(out), Rep, Period> f(
-          ctx, out, d);
-      f.precision = precision;
-      parse_chrono_format(begin, end, f);
-    }
-    w.write(buf.data(), buf.size(), specs);
-    return w.out();
-  }
-};
-
-FMT_END_NAMESPACE
-
-#endif  // FMT_CHRONO_H_

include/spdlog/fmt/bundled/color.h

@@ -1,585 +0,0 @@
-// Formatting library for C++ - color support
-//
-// Copyright (c) 2018 - present, Victor Zverovich and fmt contributors
-// All rights reserved.
-//
-// For the license information refer to format.h.
-
-#ifndef FMT_COLOR_H_
-#define FMT_COLOR_H_
-
-#include "format.h"
-
-FMT_BEGIN_NAMESPACE
-
-enum class color : uint32_t {
-  alice_blue = 0xF0F8FF,               // rgb(240,248,255)
-  antique_white = 0xFAEBD7,            // rgb(250,235,215)
-  aqua = 0x00FFFF,                     // rgb(0,255,255)
-  aquamarine = 0x7FFFD4,               // rgb(127,255,212)
-  azure = 0xF0FFFF,                    // rgb(240,255,255)
-  beige = 0xF5F5DC,                    // rgb(245,245,220)
-  bisque = 0xFFE4C4,                   // rgb(255,228,196)
-  black = 0x000000,                    // rgb(0,0,0)
-  blanched_almond = 0xFFEBCD,          // rgb(255,235,205)
-  blue = 0x0000FF,                     // rgb(0,0,255)
-  blue_violet = 0x8A2BE2,              // rgb(138,43,226)
-  brown = 0xA52A2A,                    // rgb(165,42,42)
-  burly_wood = 0xDEB887,               // rgb(222,184,135)
-  cadet_blue = 0x5F9EA0,               // rgb(95,158,160)
-  chartreuse = 0x7FFF00,               // rgb(127,255,0)
-  chocolate = 0xD2691E,                // rgb(210,105,30)
-  coral = 0xFF7F50,                    // rgb(255,127,80)
-  cornflower_blue = 0x6495ED,          // rgb(100,149,237)
-  cornsilk = 0xFFF8DC,                 // rgb(255,248,220)
-  crimson = 0xDC143C,                  // rgb(220,20,60)
-  cyan = 0x00FFFF,                     // rgb(0,255,255)
-  dark_blue = 0x00008B,                // rgb(0,0,139)
-  dark_cyan = 0x008B8B,                // rgb(0,139,139)
-  dark_golden_rod = 0xB8860B,          // rgb(184,134,11)
-  dark_gray = 0xA9A9A9,                // rgb(169,169,169)
-  dark_green = 0x006400,               // rgb(0,100,0)
-  dark_khaki = 0xBDB76B,               // rgb(189,183,107)
-  dark_magenta = 0x8B008B,             // rgb(139,0,139)
-  dark_olive_green = 0x556B2F,         // rgb(85,107,47)
-  dark_orange = 0xFF8C00,              // rgb(255,140,0)
-  dark_orchid = 0x9932CC,              // rgb(153,50,204)
-  dark_red = 0x8B0000,                 // rgb(139,0,0)
-  dark_salmon = 0xE9967A,              // rgb(233,150,122)
-  dark_sea_green = 0x8FBC8F,           // rgb(143,188,143)
-  dark_slate_blue = 0x483D8B,          // rgb(72,61,139)
-  dark_slate_gray = 0x2F4F4F,          // rgb(47,79,79)
-  dark_turquoise = 0x00CED1,           // rgb(0,206,209)
-  dark_violet = 0x9400D3,              // rgb(148,0,211)
-  deep_pink = 0xFF1493,                // rgb(255,20,147)
-  deep_sky_blue = 0x00BFFF,            // rgb(0,191,255)
-  dim_gray = 0x696969,                 // rgb(105,105,105)
-  dodger_blue = 0x1E90FF,              // rgb(30,144,255)
-  fire_brick = 0xB22222,               // rgb(178,34,34)
-  floral_white = 0xFFFAF0,             // rgb(255,250,240)
-  forest_green = 0x228B22,             // rgb(34,139,34)
-  fuchsia = 0xFF00FF,                  // rgb(255,0,255)
-  gainsboro = 0xDCDCDC,                // rgb(220,220,220)
-  ghost_white = 0xF8F8FF,              // rgb(248,248,255)
-  gold = 0xFFD700,                     // rgb(255,215,0)
-  golden_rod = 0xDAA520,               // rgb(218,165,32)
-  gray = 0x808080,                     // rgb(128,128,128)
-  green = 0x008000,                    // rgb(0,128,0)
-  green_yellow = 0xADFF2F,             // rgb(173,255,47)
-  honey_dew = 0xF0FFF0,                // rgb(240,255,240)
-  hot_pink = 0xFF69B4,                 // rgb(255,105,180)
-  indian_red = 0xCD5C5C,               // rgb(205,92,92)
-  indigo = 0x4B0082,                   // rgb(75,0,130)
-  ivory = 0xFFFFF0,                    // rgb(255,255,240)
-  khaki = 0xF0E68C,                    // rgb(240,230,140)
-  lavender = 0xE6E6FA,                 // rgb(230,230,250)
-  lavender_blush = 0xFFF0F5,           // rgb(255,240,245)
-  lawn_green = 0x7CFC00,               // rgb(124,252,0)
-  lemon_chiffon = 0xFFFACD,            // rgb(255,250,205)
-  light_blue = 0xADD8E6,               // rgb(173,216,230)
-  light_coral = 0xF08080,              // rgb(240,128,128)
-  light_cyan = 0xE0FFFF,               // rgb(224,255,255)
-  light_golden_rod_yellow = 0xFAFAD2,  // rgb(250,250,210)
-  light_gray = 0xD3D3D3,               // rgb(211,211,211)
-  light_green = 0x90EE90,              // rgb(144,238,144)
-  light_pink = 0xFFB6C1,               // rgb(255,182,193)
-  light_salmon = 0xFFA07A,             // rgb(255,160,122)
-  light_sea_green = 0x20B2AA,          // rgb(32,178,170)
-  light_sky_blue = 0x87CEFA,           // rgb(135,206,250)
-  light_slate_gray = 0x778899,         // rgb(119,136,153)
-  light_steel_blue = 0xB0C4DE,         // rgb(176,196,222)
-  light_yellow = 0xFFFFE0,             // rgb(255,255,224)
-  lime = 0x00FF00,                     // rgb(0,255,0)
-  lime_green = 0x32CD32,               // rgb(50,205,50)
-  linen = 0xFAF0E6,                    // rgb(250,240,230)
-  magenta = 0xFF00FF,                  // rgb(255,0,255)
-  maroon = 0x800000,                   // rgb(128,0,0)
-  medium_aquamarine = 0x66CDAA,        // rgb(102,205,170)
-  medium_blue = 0x0000CD,              // rgb(0,0,205)
-  medium_orchid = 0xBA55D3,            // rgb(186,85,211)
-  medium_purple = 0x9370DB,            // rgb(147,112,219)
-  medium_sea_green = 0x3CB371,         // rgb(60,179,113)
-  medium_slate_blue = 0x7B68EE,        // rgb(123,104,238)
-  medium_spring_green = 0x00FA9A,      // rgb(0,250,154)
-  medium_turquoise = 0x48D1CC,         // rgb(72,209,204)
-  medium_violet_red = 0xC71585,        // rgb(199,21,133)
-  midnight_blue = 0x191970,            // rgb(25,25,112)
-  mint_cream = 0xF5FFFA,               // rgb(245,255,250)
-  misty_rose = 0xFFE4E1,               // rgb(255,228,225)
-  moccasin = 0xFFE4B5,                 // rgb(255,228,181)
-  navajo_white = 0xFFDEAD,             // rgb(255,222,173)
-  navy = 0x000080,                     // rgb(0,0,128)
-  old_lace = 0xFDF5E6,                 // rgb(253,245,230)
-  olive = 0x808000,                    // rgb(128,128,0)
-  olive_drab = 0x6B8E23,               // rgb(107,142,35)
-  orange = 0xFFA500,                   // rgb(255,165,0)
-  orange_red = 0xFF4500,               // rgb(255,69,0)
-  orchid = 0xDA70D6,                   // rgb(218,112,214)
-  pale_golden_rod = 0xEEE8AA,          // rgb(238,232,170)
-  pale_green = 0x98FB98,               // rgb(152,251,152)
-  pale_turquoise = 0xAFEEEE,           // rgb(175,238,238)
-  pale_violet_red = 0xDB7093,          // rgb(219,112,147)
-  papaya_whip = 0xFFEFD5,              // rgb(255,239,213)
-  peach_puff = 0xFFDAB9,               // rgb(255,218,185)
-  peru = 0xCD853F,                     // rgb(205,133,63)
-  pink = 0xFFC0CB,                     // rgb(255,192,203)
-  plum = 0xDDA0DD,                     // rgb(221,160,221)
-  powder_blue = 0xB0E0E6,              // rgb(176,224,230)
-  purple = 0x800080,                   // rgb(128,0,128)
-  rebecca_purple = 0x663399,           // rgb(102,51,153)
-  red = 0xFF0000,                      // rgb(255,0,0)
-  rosy_brown = 0xBC8F8F,               // rgb(188,143,143)
-  royal_blue = 0x4169E1,               // rgb(65,105,225)
-  saddle_brown = 0x8B4513,             // rgb(139,69,19)
-  salmon = 0xFA8072,                   // rgb(250,128,114)
-  sandy_brown = 0xF4A460,              // rgb(244,164,96)
-  sea_green = 0x2E8B57,                // rgb(46,139,87)
-  sea_shell = 0xFFF5EE,                // rgb(255,245,238)
-  sienna = 0xA0522D,                   // rgb(160,82,45)
-  silver = 0xC0C0C0,                   // rgb(192,192,192)
-  sky_blue = 0x87CEEB,                 // rgb(135,206,235)
-  slate_blue = 0x6A5ACD,               // rgb(106,90,205)
-  slate_gray = 0x708090,               // rgb(112,128,144)
-  snow = 0xFFFAFA,                     // rgb(255,250,250)
-  spring_green = 0x00FF7F,             // rgb(0,255,127)
-  steel_blue = 0x4682B4,               // rgb(70,130,180)
-  tan = 0xD2B48C,                      // rgb(210,180,140)
-  teal = 0x008080,                     // rgb(0,128,128)
-  thistle = 0xD8BFD8,                  // rgb(216,191,216)
-  tomato = 0xFF6347,                   // rgb(255,99,71)
-  turquoise = 0x40E0D0,                // rgb(64,224,208)
-  violet = 0xEE82EE,                   // rgb(238,130,238)
-  wheat = 0xF5DEB3,                    // rgb(245,222,179)
-  white = 0xFFFFFF,                    // rgb(255,255,255)
-  white_smoke = 0xF5F5F5,              // rgb(245,245,245)
-  yellow = 0xFFFF00,                   // rgb(255,255,0)
-  yellow_green = 0x9ACD32              // rgb(154,205,50)
-};                                     // enum class color
-
-enum class terminal_color : uint8_t {
-  black = 30,
-  red,
-  green,
-  yellow,
-  blue,
-  magenta,
-  cyan,
-  white,
-  bright_black = 90,
-  bright_red,
-  bright_green,
-  bright_yellow,
-  bright_blue,
-  bright_magenta,
-  bright_cyan,
-  bright_white
-};
-
-enum class emphasis : uint8_t {
-  bold = 1,
-  italic = 1 << 1,
-  underline = 1 << 2,
-  strikethrough = 1 << 3
-};
-
-// rgb is a struct for red, green and blue colors.
-// Using the name "rgb" makes some editors show the color in a tooltip.
-struct rgb {
-  FMT_CONSTEXPR rgb() : r(0), g(0), b(0) {}
-  FMT_CONSTEXPR rgb(uint8_t r_, uint8_t g_, uint8_t b_) : r(r_), g(g_), b(b_) {}
-  FMT_CONSTEXPR rgb(uint32_t hex)
-      : r((hex >> 16) & 0xFF), g((hex >> 8) & 0xFF), b(hex & 0xFF) {}
-  FMT_CONSTEXPR rgb(color hex)
-      : r((uint32_t(hex) >> 16) & 0xFF),
-        g((uint32_t(hex) >> 8) & 0xFF),
-        b(uint32_t(hex) & 0xFF) {}
-  uint8_t r;
-  uint8_t g;
-  uint8_t b;
-};
-
-namespace internal {
-
-// color is a struct of either a rgb color or a terminal color.
-struct color_type {
-  FMT_CONSTEXPR color_type() FMT_NOEXCEPT : is_rgb(), value{} {}
-  FMT_CONSTEXPR color_type(color rgb_color) FMT_NOEXCEPT : is_rgb(true),
-                                                           value{} {
-    value.rgb_color = static_cast<uint32_t>(rgb_color);
-  }
-  FMT_CONSTEXPR color_type(rgb rgb_color) FMT_NOEXCEPT : is_rgb(true), value{} {
-    value.rgb_color = (static_cast<uint32_t>(rgb_color.r) << 16) |
-                      (static_cast<uint32_t>(rgb_color.g) << 8) | rgb_color.b;
-  }
-  FMT_CONSTEXPR color_type(terminal_color term_color) FMT_NOEXCEPT : is_rgb(),
-                                                                     value{} {
-    value.term_color = static_cast<uint8_t>(term_color);
-  }
-  bool is_rgb;
-  union color_union {
-    uint8_t term_color;
-    uint32_t rgb_color;
-  } value;
-};
-}  // namespace internal
-
-// Experimental text formatting support.
-class text_style {
- public:
-  FMT_CONSTEXPR text_style(emphasis em = emphasis()) FMT_NOEXCEPT
-      : set_foreground_color(),
-        set_background_color(),
-        ems(em) {}
-
-  FMT_CONSTEXPR text_style& operator|=(const text_style& rhs) {
-    if (!set_foreground_color) {
-      set_foreground_color = rhs.set_foreground_color;
-      foreground_color = rhs.foreground_color;
-    } else if (rhs.set_foreground_color) {
-      if (!foreground_color.is_rgb || !rhs.foreground_color.is_rgb)
-        FMT_THROW(format_error("can't OR a terminal color"));
-      foreground_color.value.rgb_color |= rhs.foreground_color.value.rgb_color;
-    }
-
-    if (!set_background_color) {
-      set_background_color = rhs.set_background_color;
-      background_color = rhs.background_color;
-    } else if (rhs.set_background_color) {
-      if (!background_color.is_rgb || !rhs.background_color.is_rgb)
-        FMT_THROW(format_error("can't OR a terminal color"));
-      background_color.value.rgb_color |= rhs.background_color.value.rgb_color;
-    }
-
-    ems = static_cast<emphasis>(static_cast<uint8_t>(ems) |
-                                static_cast<uint8_t>(rhs.ems));
-    return *this;
-  }
-
-  friend FMT_CONSTEXPR text_style operator|(text_style lhs,
-                                            const text_style& rhs) {
-    return lhs |= rhs;
-  }
-
-  FMT_CONSTEXPR text_style& operator&=(const text_style& rhs) {
-    if (!set_foreground_color) {
-      set_foreground_color = rhs.set_foreground_color;
-      foreground_color = rhs.foreground_color;
-    } else if (rhs.set_foreground_color) {
-      if (!foreground_color.is_rgb || !rhs.foreground_color.is_rgb)
-        FMT_THROW(format_error("can't AND a terminal color"));
-      foreground_color.value.rgb_color &= rhs.foreground_color.value.rgb_color;
-    }
-
-    if (!set_background_color) {
-      set_background_color = rhs.set_background_color;
-      background_color = rhs.background_color;
-    } else if (rhs.set_background_color) {
-      if (!background_color.is_rgb || !rhs.background_color.is_rgb)
-        FMT_THROW(format_error("can't AND a terminal color"));
-      background_color.value.rgb_color &= rhs.background_color.value.rgb_color;
-    }
-
-    ems = static_cast<emphasis>(static_cast<uint8_t>(ems) &
-                                static_cast<uint8_t>(rhs.ems));
-    return *this;
-  }
-
-  friend FMT_CONSTEXPR text_style operator&(text_style lhs,
-                                            const text_style& rhs) {
-    return lhs &= rhs;
-  }
-
-  FMT_CONSTEXPR bool has_foreground() const FMT_NOEXCEPT {
-    return set_foreground_color;
-  }
-  FMT_CONSTEXPR bool has_background() const FMT_NOEXCEPT {
-    return set_background_color;
-  }
-  FMT_CONSTEXPR bool has_emphasis() const FMT_NOEXCEPT {
-    return static_cast<uint8_t>(ems) != 0;
-  }
-  FMT_CONSTEXPR internal::color_type get_foreground() const FMT_NOEXCEPT {
-    assert(has_foreground() && "no foreground specified for this style");
-    return foreground_color;
-  }
-  FMT_CONSTEXPR internal::color_type get_background() const FMT_NOEXCEPT {
-    assert(has_background() && "no background specified for this style");
-    return background_color;
-  }
-  FMT_CONSTEXPR emphasis get_emphasis() const FMT_NOEXCEPT {
-    assert(has_emphasis() && "no emphasis specified for this style");
-    return ems;
-  }
-
- private:
-  FMT_CONSTEXPR text_style(bool is_foreground,
-                           internal::color_type text_color) FMT_NOEXCEPT
-      : set_foreground_color(),
-        set_background_color(),
-        ems() {
-    if (is_foreground) {
-      foreground_color = text_color;
-      set_foreground_color = true;
-    } else {
-      background_color = text_color;
-      set_background_color = true;
-    }
-  }
-
-  friend FMT_CONSTEXPR_DECL text_style fg(internal::color_type foreground)
-      FMT_NOEXCEPT;
-  friend FMT_CONSTEXPR_DECL text_style bg(internal::color_type background)
-      FMT_NOEXCEPT;
-
-  internal::color_type foreground_color;
-  internal::color_type background_color;
-  bool set_foreground_color;
-  bool set_background_color;
-  emphasis ems;
-};
-
-FMT_CONSTEXPR text_style fg(internal::color_type foreground) FMT_NOEXCEPT {
-  return text_style(/*is_foreground=*/true, foreground);
-}
-
-FMT_CONSTEXPR text_style bg(internal::color_type background) FMT_NOEXCEPT {
-  return text_style(/*is_foreground=*/false, background);
-}
-
-FMT_CONSTEXPR text_style operator|(emphasis lhs, emphasis rhs) FMT_NOEXCEPT {
-  return text_style(lhs) | rhs;
-}
-
-namespace internal {
-
-template <typename Char> struct ansi_color_escape {
-  FMT_CONSTEXPR ansi_color_escape(internal::color_type text_color,
-                                  const char* esc) FMT_NOEXCEPT {
-    // If we have a terminal color, we need to output another escape code
-    // sequence.
-    if (!text_color.is_rgb) {
-      bool is_background = esc == internal::data::background_color;
-      uint32_t value = text_color.value.term_color;
-      // Background ASCII codes are the same as the foreground ones but with
-      // 10 more.
-      if (is_background) value += 10u;
-
-      std::size_t index = 0;
-      buffer[index++] = static_cast<Char>('\x1b');
-      buffer[index++] = static_cast<Char>('[');
-
-      if (value >= 100u) {
-        buffer[index++] = static_cast<Char>('1');
-        value %= 100u;
-      }
-      buffer[index++] = static_cast<Char>('0' + value / 10u);
-      buffer[index++] = static_cast<Char>('0' + value % 10u);
-
-      buffer[index++] = static_cast<Char>('m');
-      buffer[index++] = static_cast<Char>('\0');
-      return;
-    }
-
-    for (int i = 0; i < 7; i++) {
-      buffer[i] = static_cast<Char>(esc[i]);
-    }
-    rgb color(text_color.value.rgb_color);
-    to_esc(color.r, buffer + 7, ';');
-    to_esc(color.g, buffer + 11, ';');
-    to_esc(color.b, buffer + 15, 'm');
-    buffer[19] = static_cast<Char>(0);
-  }
-  FMT_CONSTEXPR ansi_color_escape(emphasis em) FMT_NOEXCEPT {
-    uint8_t em_codes[4] = {};
-    uint8_t em_bits = static_cast<uint8_t>(em);
-    if (em_bits & static_cast<uint8_t>(emphasis::bold)) em_codes[0] = 1;
-    if (em_bits & static_cast<uint8_t>(emphasis::italic)) em_codes[1] = 3;
-    if (em_bits & static_cast<uint8_t>(emphasis::underline)) em_codes[2] = 4;
-    if (em_bits & static_cast<uint8_t>(emphasis::strikethrough))
-      em_codes[3] = 9;
-
-    std::size_t index = 0;
-    for (int i = 0; i < 4; ++i) {
-      if (!em_codes[i]) continue;
-      buffer[index++] = static_cast<Char>('\x1b');
-      buffer[index++] = static_cast<Char>('[');
-      buffer[index++] = static_cast<Char>('0' + em_codes[i]);
-      buffer[index++] = static_cast<Char>('m');
-    }
-    buffer[index++] = static_cast<Char>(0);
-  }
-  FMT_CONSTEXPR operator const Char*() const FMT_NOEXCEPT { return buffer; }
-
-  FMT_CONSTEXPR const Char* begin() const FMT_NOEXCEPT { return buffer; }
-  FMT_CONSTEXPR const Char* end() const FMT_NOEXCEPT {
-    return buffer + std::strlen(buffer);
-  }
-
- private:
-  Char buffer[7u + 3u * 4u + 1u];
-
-  static FMT_CONSTEXPR void to_esc(uint8_t c, Char* out,
-                                   char delimiter) FMT_NOEXCEPT {
-    out[0] = static_cast<Char>('0' + c / 100);
-    out[1] = static_cast<Char>('0' + c / 10 % 10);
-    out[2] = static_cast<Char>('0' + c % 10);
-    out[3] = static_cast<Char>(delimiter);
-  }
-};
-
-template <typename Char>
-FMT_CONSTEXPR ansi_color_escape<Char> make_foreground_color(
-    internal::color_type foreground) FMT_NOEXCEPT {
-  return ansi_color_escape<Char>(foreground, internal::data::foreground_color);
-}
-
-template <typename Char>
-FMT_CONSTEXPR ansi_color_escape<Char> make_background_color(
-    internal::color_type background) FMT_NOEXCEPT {
-  return ansi_color_escape<Char>(background, internal::data::background_color);
-}
-
-template <typename Char>
-FMT_CONSTEXPR ansi_color_escape<Char> make_emphasis(emphasis em) FMT_NOEXCEPT {
-  return ansi_color_escape<Char>(em);
-}
-
-template <typename Char>
-inline void fputs(const Char* chars, FILE* stream) FMT_NOEXCEPT {
-  std::fputs(chars, stream);
-}
-
-template <>
-inline void fputs<wchar_t>(const wchar_t* chars, FILE* stream) FMT_NOEXCEPT {
-  std::fputws(chars, stream);
-}
-
-template <typename Char> inline void reset_color(FILE* stream) FMT_NOEXCEPT {
-  fputs(internal::data::reset_color, stream);
-}
-
-template <> inline void reset_color<wchar_t>(FILE* stream) FMT_NOEXCEPT {
-  fputs(internal::data::wreset_color, stream);
-}
-
-template <typename Char>
-inline void reset_color(basic_memory_buffer<Char>& buffer) FMT_NOEXCEPT {
-  const char* begin = data::reset_color;
-  const char* end = begin + sizeof(data::reset_color) - 1;
-  buffer.append(begin, end);
-}
-
-template <typename Char>
-std::basic_string<Char> vformat(const text_style& ts,
-                                basic_string_view<Char> format_str,
-                                basic_format_args<buffer_context<Char> > args) {
-  basic_memory_buffer<Char> buffer;
-  bool has_style = false;
-  if (ts.has_emphasis()) {
-    has_style = true;
-    ansi_color_escape<Char> escape = make_emphasis<Char>(ts.get_emphasis());
-    buffer.append(escape.begin(), escape.end());
-  }
-  if (ts.has_foreground()) {
-    has_style = true;
-    ansi_color_escape<Char> escape =
-        make_foreground_color<Char>(ts.get_foreground());
-    buffer.append(escape.begin(), escape.end());
-  }
-  if (ts.has_background()) {
-    has_style = true;
-    ansi_color_escape<Char> escape =
-        make_background_color<Char>(ts.get_background());
-    buffer.append(escape.begin(), escape.end());
-  }
-  internal::vformat_to(buffer, format_str, args);
-  if (has_style) {
-    reset_color<Char>(buffer);
-  }
-  return fmt::to_string(buffer);
-}
-}  // namespace internal
-
-template <typename S, typename Char = char_t<S> >
-void vprint(std::FILE* f, const text_style& ts, const S& format,
-            basic_format_args<buffer_context<Char> > args) {
-  bool has_style = false;
-  if (ts.has_emphasis()) {
-    has_style = true;
-    internal::fputs<Char>(internal::make_emphasis<Char>(ts.get_emphasis()), f);
-  }
-  if (ts.has_foreground()) {
-    has_style = true;
-    internal::fputs<Char>(
-        internal::make_foreground_color<Char>(ts.get_foreground()), f);
-  }
-  if (ts.has_background()) {
-    has_style = true;
-    internal::fputs<Char>(
-        internal::make_background_color<Char>(ts.get_background()), f);
-  }
-  vprint(f, format, args);
-  if (has_style) {
-    internal::reset_color<Char>(f);
-  }
-}
-
-/**
-  Formats a string and prints it to the specified file stream using ANSI
-  escape sequences to specify text formatting.
-  Example:
-    fmt::print(fmt::emphasis::bold | fg(fmt::color::red),
-               "Elapsed time: {0:.2f} seconds", 1.23);
- */
-template <typename S, typename... Args,
-          FMT_ENABLE_IF(internal::is_string<S>::value)>
-void print(std::FILE* f, const text_style& ts, const S& format_str,
-           const Args&... args) {
-  internal::check_format_string<Args...>(format_str);
-  using context = buffer_context<char_t<S> >;
-  format_arg_store<context, Args...> as{args...};
-  vprint(f, ts, format_str, basic_format_args<context>(as));
-}
-
-/**
-  Formats a string and prints it to stdout using ANSI escape sequences to
-  specify text formatting.
-  Example:
-    fmt::print(fmt::emphasis::bold | fg(fmt::color::red),
-               "Elapsed time: {0:.2f} seconds", 1.23);
- */
-template <typename S, typename... Args,
-          FMT_ENABLE_IF(internal::is_string<S>::value)>
-void print(const text_style& ts, const S& format_str, const Args&... args) {
-  return print(stdout, ts, format_str, args...);
-}
-
-template <typename S, typename Char = char_t<S> >
-inline std::basic_string<Char> vformat(
-    const text_style& ts, const S& format_str,
-    basic_format_args<buffer_context<Char> > args) {
-  return internal::vformat(ts, to_string_view(format_str), args);
-}
-
-/**
-  \rst
-  Formats arguments and returns the result as a string using ANSI
-  escape sequences to specify text formatting.
-
-  **Example**::
-
-    #include <fmt/color.h>
-    std::string message = fmt::format(fmt::emphasis::bold | fg(fmt::color::red),
-                                      "The answer is {}", 42);
-  \endrst
-*/
-template <typename S, typename... Args, typename Char = char_t<S> >
-inline std::basic_string<Char> format(const text_style& ts, const S& format_str,
-                                      const Args&... args) {
-  return internal::vformat(ts, to_string_view(format_str),
-                           {internal::make_args_checked(format_str, args...)});
-}
-
-FMT_END_NAMESPACE
-
-#endif  // FMT_COLOR_H_

include/spdlog/fmt/bundled/compile.h

@@ -1,466 +0,0 @@
-// Formatting library for C++ - experimental format string compilation
-//
-// Copyright (c) 2012 - present, Victor Zverovich and fmt contributors
-// All rights reserved.
-//
-// For the license information refer to format.h.
-
-#ifndef FMT_COMPILE_H_
-#define FMT_COMPILE_H_
-
-#include <vector>
-#include "format.h"
-
-FMT_BEGIN_NAMESPACE
-namespace internal {
-
-template <typename Char> struct format_part {
- public:
-  struct named_argument_id {
-    FMT_CONSTEXPR named_argument_id(internal::string_view_metadata id)
-        : id(id) {}
-    internal::string_view_metadata id;
-  };
-
-  struct argument_id {
-    FMT_CONSTEXPR argument_id() : argument_id(0u) {}
-
-    FMT_CONSTEXPR argument_id(unsigned id)
-        : which(which_arg_id::index), val(id) {}
-
-    FMT_CONSTEXPR argument_id(internal::string_view_metadata id)
-        : which(which_arg_id::named_index), val(id) {}
-
-    enum class which_arg_id { index, named_index };
-
-    which_arg_id which;
-
-    union value {
-      FMT_CONSTEXPR value() : index(0u) {}
-      FMT_CONSTEXPR value(unsigned id) : index(id) {}
-      FMT_CONSTEXPR value(internal::string_view_metadata id)
-          : named_index(id) {}
-
-      unsigned index;
-      internal::string_view_metadata named_index;
-    } val;
-  };
-
-  struct specification {
-    FMT_CONSTEXPR specification() : arg_id(0u) {}
-    FMT_CONSTEXPR specification(unsigned id) : arg_id(id) {}
-
-    FMT_CONSTEXPR specification(internal::string_view_metadata id)
-        : arg_id(id) {}
-
-    argument_id arg_id;
-    internal::dynamic_format_specs<Char> parsed_specs;
-  };
-
-  FMT_CONSTEXPR format_part()
-      : which(kind::argument_id), end_of_argument_id(0u), val(0u) {}
-
-  FMT_CONSTEXPR format_part(internal::string_view_metadata text)
-      : which(kind::text), end_of_argument_id(0u), val(text) {}
-
-  FMT_CONSTEXPR format_part(unsigned id)
-      : which(kind::argument_id), end_of_argument_id(0u), val(id) {}
-
-  FMT_CONSTEXPR format_part(named_argument_id arg_id)
-      : which(kind::named_argument_id), end_of_argument_id(0u), val(arg_id) {}
-
-  FMT_CONSTEXPR format_part(specification spec)
-      : which(kind::specification), end_of_argument_id(0u), val(spec) {}
-
-  enum class kind { argument_id, named_argument_id, text, specification };
-
-  kind which;
-  std::size_t end_of_argument_id;
-  union value {
-    FMT_CONSTEXPR value() : arg_id(0u) {}
-    FMT_CONSTEXPR value(unsigned id) : arg_id(id) {}
-    FMT_CONSTEXPR value(named_argument_id named_id)
-        : named_arg_id(named_id.id) {}
-    FMT_CONSTEXPR value(internal::string_view_metadata t) : text(t) {}
-    FMT_CONSTEXPR value(specification s) : spec(s) {}
-    unsigned arg_id;
-    internal::string_view_metadata named_arg_id;
-    internal::string_view_metadata text;
-    specification spec;
-  } val;
-};
-
-template <typename Char, typename PartsContainer>
-class format_preparation_handler : public internal::error_handler {
- private:
-  using part = format_part<Char>;
-
- public:
-  using iterator = typename basic_string_view<Char>::iterator;
-
-  FMT_CONSTEXPR format_preparation_handler(basic_string_view<Char> format,
-                                           PartsContainer& parts)
-      : parts_(parts), format_(format), parse_context_(format) {}
-
-  FMT_CONSTEXPR void on_text(const Char* begin, const Char* end) {
-    if (begin == end) return;
-    const auto offset = begin - format_.data();
-    const auto size = end - begin;
-    parts_.push_back(part(string_view_metadata(offset, size)));
-  }
-
-  FMT_CONSTEXPR void on_arg_id() {
-    parts_.push_back(part(parse_context_.next_arg_id()));
-  }
-
-  FMT_CONSTEXPR void on_arg_id(unsigned id) {
-    parse_context_.check_arg_id(id);
-    parts_.push_back(part(id));
-  }
-
-  FMT_CONSTEXPR void on_arg_id(basic_string_view<Char> id) {
-    const auto view = string_view_metadata(format_, id);
-    const auto arg_id = typename part::named_argument_id(view);
-    parts_.push_back(part(arg_id));
-  }
-
-  FMT_CONSTEXPR void on_replacement_field(const Char* ptr) {
-    parts_.back().end_of_argument_id = ptr - format_.begin();
-  }
-
-  FMT_CONSTEXPR const Char* on_format_specs(const Char* begin,
-                                            const Char* end) {
-    const auto specs_offset = to_unsigned(begin - format_.begin());
-
-    using parse_context = basic_parse_context<Char>;
-    internal::dynamic_format_specs<Char> parsed_specs;
-    dynamic_specs_handler<parse_context> handler(parsed_specs, parse_context_);
-    begin = parse_format_specs(begin, end, handler);
-
-    if (*begin != '}') on_error("missing '}' in format string");
-
-    auto& last_part = parts_.back();
-    auto specs = last_part.which == part::kind::argument_id
-                     ? typename part::specification(last_part.val.arg_id)
-                     : typename part::specification(last_part.val.named_arg_id);
-    specs.parsed_specs = parsed_specs;
-    last_part = part(specs);
-    last_part.end_of_argument_id = specs_offset;
-    return begin;
-  }
-
- private:
-  PartsContainer& parts_;
-  basic_string_view<Char> format_;
-  basic_parse_context<Char> parse_context_;
-};
-
-template <typename Format, typename PreparedPartsProvider, typename... Args>
-class prepared_format {
- public:
-  using char_type = char_t<Format>;
-  using format_part_t = format_part<char_type>;
-
-  constexpr prepared_format(Format f)
-      : format_(std::move(f)), parts_provider_(to_string_view(format_)) {}
-
-  prepared_format() = delete;
-
-  using context = buffer_context<char_type>;
-
-  template <typename Range, typename Context>
-  auto vformat_to(Range out, basic_format_args<Context> args) const ->
-      typename Context::iterator {
-    const auto format_view = internal::to_string_view(format_);
-    basic_parse_context<char_type> parse_ctx(format_view);
-    Context ctx(out.begin(), args);
-
-    const auto& parts = parts_provider_.parts();
-    for (auto part_it = parts.begin(); part_it != parts.end(); ++part_it) {
-      const auto& part = *part_it;
-      const auto& value = part.val;
-
-      switch (part.which) {
-      case format_part_t::kind::text: {
-        const auto text = value.text.to_view(format_view.data());
-        auto output = ctx.out();
-        auto&& it = internal::reserve(output, text.size());
-        it = std::copy_n(text.begin(), text.size(), it);
-        ctx.advance_to(output);
-      } break;
-
-      case format_part_t::kind::argument_id: {
-        advance_parse_context_to_specification(parse_ctx, part);
-        format_arg<Range>(parse_ctx, ctx, value.arg_id);
-      } break;
-
-      case format_part_t::kind::named_argument_id: {
-        advance_parse_context_to_specification(parse_ctx, part);
-        const auto named_arg_id =
-            value.named_arg_id.to_view(format_view.data());
-        format_arg<Range>(parse_ctx, ctx, named_arg_id);
-      } break;
-      case format_part_t::kind::specification: {
-        const auto& arg_id_value = value.spec.arg_id.val;
-        const auto arg = value.spec.arg_id.which ==
-                                 format_part_t::argument_id::which_arg_id::index
-                             ? ctx.arg(arg_id_value.index)
-                             : ctx.arg(arg_id_value.named_index.to_view(
-                                   to_string_view(format_).data()));
-
-        auto specs = value.spec.parsed_specs;
-
-        handle_dynamic_spec<internal::width_checker>(
-            specs.width, specs.width_ref, ctx, format_view.begin());
-        handle_dynamic_spec<internal::precision_checker>(
-            specs.precision, specs.precision_ref, ctx, format_view.begin());
-
-        check_prepared_specs(specs, arg.type());
-        advance_parse_context_to_specification(parse_ctx, part);
-        ctx.advance_to(
-            visit_format_arg(arg_formatter<Range>(ctx, nullptr, &specs), arg));
-      } break;
-      }
-    }
-
-    return ctx.out();
-  }
-
- private:
-  void advance_parse_context_to_specification(
-      basic_parse_context<char_type>& parse_ctx,
-      const format_part_t& part) const {
-    const auto view = to_string_view(format_);
-    const auto specification_begin = view.data() + part.end_of_argument_id;
-    advance_to(parse_ctx, specification_begin);
-  }
-
-  template <typename Range, typename Context, typename Id>
-  void format_arg(basic_parse_context<char_type>& parse_ctx, Context& ctx,
-                  Id arg_id) const {
-    parse_ctx.check_arg_id(arg_id);
-    const auto stopped_at =
-        visit_format_arg(arg_formatter<Range>(ctx), ctx.arg(arg_id));
-    ctx.advance_to(stopped_at);
-  }
-
-  template <typename Char>
-  void check_prepared_specs(const basic_format_specs<Char>& specs,
-                            internal::type arg_type) const {
-    internal::error_handler h;
-    numeric_specs_checker<internal::error_handler> checker(h, arg_type);
-    if (specs.align == align::numeric) checker.require_numeric_argument();
-    if (specs.sign != sign::none) checker.check_sign();
-    if (specs.alt) checker.require_numeric_argument();
-    if (specs.precision >= 0) checker.check_precision();
-  }
-
- private:
-  Format format_;
-  PreparedPartsProvider parts_provider_;
-};
-
-template <typename Char> struct part_counter {
-  unsigned num_parts = 0;
-
-  FMT_CONSTEXPR void on_text(const Char* begin, const Char* end) {
-    if (begin != end) ++num_parts;
-  }
-
-  FMT_CONSTEXPR void on_arg_id() { ++num_parts; }
-  FMT_CONSTEXPR void on_arg_id(unsigned) { ++num_parts; }
-  FMT_CONSTEXPR void on_arg_id(basic_string_view<Char>) { ++num_parts; }
-
-  FMT_CONSTEXPR void on_replacement_field(const Char*) {}
-
-  FMT_CONSTEXPR const Char* on_format_specs(const Char* begin,
-                                            const Char* end) {
-    // Find the matching brace.
-    unsigned braces_counter = 0;
-    for (; begin != end; ++begin) {
-      if (*begin == '{') {
-        ++braces_counter;
-      } else if (*begin == '}') {
-        if (braces_counter == 0u) break;
-        --braces_counter;
-      }
-    }
-    return begin;
-  }
-
-  FMT_CONSTEXPR void on_error(const char*) {}
-};
-
-template <typename Format> class compiletime_prepared_parts_type_provider {
- private:
-  using char_type = char_t<Format>;
-
-  static FMT_CONSTEXPR unsigned count_parts() {
-    FMT_CONSTEXPR_DECL const auto text = to_string_view(Format{});
-    part_counter<char_type> counter;
-    internal::parse_format_string</*IS_CONSTEXPR=*/true>(text, counter);
-    return counter.num_parts;
-  }
-
-// Workaround for old compilers. Compiletime parts preparation will not be
-// performed with them anyway.
-#if FMT_USE_CONSTEXPR
-  static FMT_CONSTEXPR_DECL const unsigned number_of_format_parts =
-      compiletime_prepared_parts_type_provider::count_parts();
-#else
-  static const unsigned number_of_format_parts = 0u;
-#endif
-
- public:
-  template <unsigned N> struct format_parts_array {
-    using value_type = format_part<char_type>;
-
-    FMT_CONSTEXPR format_parts_array() : arr{} {}
-
-    FMT_CONSTEXPR value_type& operator[](unsigned ind) { return arr[ind]; }
-
-    FMT_CONSTEXPR const value_type* begin() const { return arr; }
-    FMT_CONSTEXPR const value_type* end() const { return begin() + N; }
-
-   private:
-    value_type arr[N];
-  };
-
-  struct empty {
-    // Parts preparator will search for it
-    using value_type = format_part<char_type>;
-  };
-
-  using type = conditional_t<number_of_format_parts != 0,
-                             format_parts_array<number_of_format_parts>, empty>;
-};
-
-template <typename Parts> class compiletime_prepared_parts_collector {
- private:
-  using format_part = typename Parts::value_type;
-
- public:
-  FMT_CONSTEXPR explicit compiletime_prepared_parts_collector(Parts& parts)
-      : parts_{parts}, counter_{0u} {}
-
-  FMT_CONSTEXPR void push_back(format_part part) { parts_[counter_++] = part; }
-
-  FMT_CONSTEXPR format_part& back() { return parts_[counter_ - 1]; }
-
- private:
-  Parts& parts_;
-  unsigned counter_;
-};
-
-template <typename PartsContainer, typename Char>
-FMT_CONSTEXPR PartsContainer prepare_parts(basic_string_view<Char> format) {
-  PartsContainer parts;
-  internal::parse_format_string</*IS_CONSTEXPR=*/false>(
-      format, format_preparation_handler<Char, PartsContainer>(format, parts));
-  return parts;
-}
-
-template <typename PartsContainer, typename Char>
-FMT_CONSTEXPR PartsContainer
-prepare_compiletime_parts(basic_string_view<Char> format) {
-  using collector = compiletime_prepared_parts_collector<PartsContainer>;
-
-  PartsContainer parts;
-  collector c(parts);
-  internal::parse_format_string</*IS_CONSTEXPR=*/true>(
-      format, format_preparation_handler<Char, collector>(format, c));
-  return parts;
-}
-
-template <typename PartsContainer> class runtime_parts_provider {
- public:
-  runtime_parts_provider() = delete;
-  template <typename Char>
-  runtime_parts_provider(basic_string_view<Char> format)
-      : parts_(prepare_parts<PartsContainer>(format)) {}
-
-  const PartsContainer& parts() const { return parts_; }
-
- private:
-  PartsContainer parts_;
-};
-
-template <typename Format, typename PartsContainer>
-struct compiletime_parts_provider {
-  compiletime_parts_provider() = delete;
-  template <typename Char>
-  FMT_CONSTEXPR compiletime_parts_provider(basic_string_view<Char>) {}
-
-  const PartsContainer& parts() const {
-    static FMT_CONSTEXPR_DECL const PartsContainer prepared_parts =
-        prepare_compiletime_parts<PartsContainer>(
-            internal::to_string_view(Format{}));
-
-    return prepared_parts;
-  }
-};
-}  // namespace internal
-
-#if FMT_USE_CONSTEXPR
-template <typename... Args, typename S,
-          FMT_ENABLE_IF(is_compile_string<S>::value)>
-FMT_CONSTEXPR auto compile(S format_str) -> internal::prepared_format<
-    S,
-    internal::compiletime_parts_provider<
-        S,
-        typename internal::compiletime_prepared_parts_type_provider<S>::type>,
-    Args...> {
-  return format_str;
-}
-#endif
-
-template <typename... Args, typename Char, size_t N>
-auto compile(const Char (&format_str)[N]) -> internal::prepared_format<
-    std::basic_string<Char>,
-    internal::runtime_parts_provider<std::vector<internal::format_part<Char>>>,
-    Args...> {
-  return std::basic_string<Char>(format_str, N - 1);
-}
-
-template <typename CompiledFormat, typename... Args,
-          typename Char = typename CompiledFormat::char_type>
-std::basic_string<Char> format(const CompiledFormat& cf, const Args&... args) {
-  basic_memory_buffer<Char> buffer;
-  using range = internal::buffer_range<Char>;
-  using context = buffer_context<Char>;
-  cf.template vformat_to<range, context>(range(buffer),
-                                         {make_format_args<context>(args...)});
-  return to_string(buffer);
-}
-
-template <typename OutputIt, typename CompiledFormat, typename... Args>
-OutputIt format_to(OutputIt out, const CompiledFormat& cf,
-                   const Args&... args) {
-  using char_type = typename CompiledFormat::char_type;
-  using range = internal::output_range<OutputIt, char_type>;
-  using context = format_context_t<OutputIt, char_type>;
-  return cf.template vformat_to<range, context>(
-      range(out), {make_format_args<context>(args...)});
-}
-
-template <typename OutputIt, typename CompiledFormat, typename... Args,
-          FMT_ENABLE_IF(internal::is_output_iterator<OutputIt>::value)>
-format_to_n_result<OutputIt> format_to_n(OutputIt out, size_t n,
-                                         const CompiledFormat& cf,
-                                         const Args&... args) {
-  auto it =
-      format_to(internal::truncating_iterator<OutputIt>(out, n), cf, args...);
-  return {it.base(), it.count()};
-}
-
-template <typename CompiledFormat, typename... Args>
-std::size_t formatted_size(const CompiledFormat& cf, const Args&... args) {
-  return fmt::format_to(
-             internal::counting_iterator<typename CompiledFormat::char_type>(),
-             cf, args...)
-      .count();
-}
-
-FMT_END_NAMESPACE
-
-#endif  // FMT_COMPILE_H_

include/spdlog/fmt/bundled/locale.h

@@ -1,77 +0,0 @@
-// Formatting library for C++ - std::locale support
-//
-// Copyright (c) 2012 - present, Victor Zverovich
-// All rights reserved.
-//
-// For the license information refer to format.h.
-
-#ifndef FMT_LOCALE_H_
-#define FMT_LOCALE_H_
-
-#include <locale>
-#include "format.h"
-
-FMT_BEGIN_NAMESPACE
-
-namespace internal {
-template <typename Char>
-typename buffer_context<Char>::iterator vformat_to(
-    const std::locale& loc, buffer<Char>& buf,
-    basic_string_view<Char> format_str,
-    basic_format_args<buffer_context<Char>> args) {
-  using range = buffer_range<Char>;
-  return vformat_to<arg_formatter<range>>(buf, to_string_view(format_str), args,
-                                          internal::locale_ref(loc));
-}
-
-template <typename Char>
-std::basic_string<Char> vformat(const std::locale& loc,
-                                basic_string_view<Char> format_str,
-                                basic_format_args<buffer_context<Char>> args) {
-  basic_memory_buffer<Char> buffer;
-  internal::vformat_to(loc, buffer, format_str, args);
-  return fmt::to_string(buffer);
-}
-}  // namespace internal
-
-template <typename S, typename Char = char_t<S>>
-inline std::basic_string<Char> vformat(
-    const std::locale& loc, const S& format_str,
-    basic_format_args<buffer_context<Char>> args) {
-  return internal::vformat(loc, to_string_view(format_str), args);
-}
-
-template <typename S, typename... Args, typename Char = char_t<S>>
-inline std::basic_string<Char> format(const std::locale& loc,
-                                      const S& format_str, Args&&... args) {
-  return internal::vformat(
-      loc, to_string_view(format_str),
-      {internal::make_args_checked<Args...>(format_str, args...)});
-}
-
-template <typename S, typename OutputIt, typename... Args,
-          typename Char = enable_if_t<
-              internal::is_output_iterator<OutputIt>::value, char_t<S>>>
-inline OutputIt vformat_to(OutputIt out, const std::locale& loc,
-                           const S& format_str,
-                           format_args_t<OutputIt, Char> args) {
-  using range = internal::output_range<OutputIt, Char>;
-  return vformat_to<arg_formatter<range>>(
-      range(out), to_string_view(format_str), args, internal::locale_ref(loc));
-}
-
-template <typename OutputIt, typename S, typename... Args,
-          FMT_ENABLE_IF(internal::is_output_iterator<OutputIt>::value&&
-                            internal::is_string<S>::value)>
-inline OutputIt format_to(OutputIt out, const std::locale& loc,
-                          const S& format_str, Args&&... args) {
-  internal::check_format_string<Args...>(format_str);
-  using context = format_context_t<OutputIt, char_t<S>>;
-  format_arg_store<context, Args...> as{args...};
-  return vformat_to(out, loc, to_string_view(format_str),
-                    basic_format_args<context>(as));
-}
-
-FMT_END_NAMESPACE
-
-#endif  // FMT_LOCALE_H_

include/spdlog/fmt/bundled/ostream.h

@@ -1,136 +0,0 @@
-// Formatting library for C++ - std::ostream support
-//
-// Copyright (c) 2012 - present, Victor Zverovich
-// All rights reserved.
-//
-// For the license information refer to format.h.
-
-#ifndef FMT_OSTREAM_H_
-#define FMT_OSTREAM_H_
-
-#include <ostream>
-#include "format.h"
-
-FMT_BEGIN_NAMESPACE
-namespace internal {
-
-template <class Char> class formatbuf : public std::basic_streambuf<Char> {
- private:
-  using int_type = typename std::basic_streambuf<Char>::int_type;
-  using traits_type = typename std::basic_streambuf<Char>::traits_type;
-
-  buffer<Char>& buffer_;
-
- public:
-  formatbuf(buffer<Char>& buf) : buffer_(buf) {}
-
- protected:
-  // The put-area is actually always empty. This makes the implementation
-  // simpler and has the advantage that the streambuf and the buffer are always
-  // in sync and sputc never writes into uninitialized memory. The obvious
-  // disadvantage is that each call to sputc always results in a (virtual) call
-  // to overflow. There is no disadvantage here for sputn since this always
-  // results in a call to xsputn.
-
-  int_type overflow(int_type ch = traits_type::eof()) FMT_OVERRIDE {
-    if (!traits_type::eq_int_type(ch, traits_type::eof()))
-      buffer_.push_back(static_cast<Char>(ch));
-    return ch;
-  }
-
-  std::streamsize xsputn(const Char* s, std::streamsize count) FMT_OVERRIDE {
-    buffer_.append(s, s + count);
-    return count;
-  }
-};
-
-template <typename Char> struct test_stream : std::basic_ostream<Char> {
- private:
-  struct null;
-  // Hide all operator<< from std::basic_ostream<Char>.
-  void operator<<(null);
-};
-
-// Checks if T has a user-defined operator<< (e.g. not a member of
-// std::ostream).
-template <typename T, typename Char> class is_streamable {
- private:
-  template <typename U>
-  static decltype((void)(std::declval<test_stream<Char>&>()
-                         << std::declval<U>()),
-                  std::true_type())
-  test(int);
-
-  template <typename> static std::false_type test(...);
-
-  using result = decltype(test<T>(0));
-
- public:
-  static const bool value = result::value;
-};
-
-// Write the content of buf to os.
-template <typename Char>
-void write(std::basic_ostream<Char>& os, buffer<Char>& buf) {
-  const Char* buf_data = buf.data();
-  using unsigned_streamsize = std::make_unsigned<std::streamsize>::type;
-  unsigned_streamsize size = buf.size();
-  unsigned_streamsize max_size =
-      to_unsigned((std::numeric_limits<std::streamsize>::max)());
-  do {
-    unsigned_streamsize n = size <= max_size ? size : max_size;
-    os.write(buf_data, static_cast<std::streamsize>(n));
-    buf_data += n;
-    size -= n;
-  } while (size != 0);
-}
-
-template <typename Char, typename T>
-void format_value(buffer<Char>& buf, const T& value) {
-  formatbuf<Char> format_buf(buf);
-  std::basic_ostream<Char> output(&format_buf);
-  output.exceptions(std::ios_base::failbit | std::ios_base::badbit);
-  output << value;
-  buf.resize(buf.size());
-}
-
-// Formats an object of type T that has an overloaded ostream operator<<.
-template <typename T, typename Char>
-struct fallback_formatter<T, Char, enable_if_t<is_streamable<T, Char>::value>>
-    : formatter<basic_string_view<Char>, Char> {
-  template <typename Context>
-  auto format(const T& value, Context& ctx) -> decltype(ctx.out()) {
-    basic_memory_buffer<Char> buffer;
-    format_value(buffer, value);
-    basic_string_view<Char> str(buffer.data(), buffer.size());
-    return formatter<basic_string_view<Char>, Char>::format(str, ctx);
-  }
-};
-}  // namespace internal
-
-template <typename Char>
-void vprint(std::basic_ostream<Char>& os, basic_string_view<Char> format_str,
-            basic_format_args<buffer_context<Char>> args) {
-  basic_memory_buffer<Char> buffer;
-  internal::vformat_to(buffer, format_str, args);
-  internal::write(os, buffer);
-}
-
-/**
-  \rst
-  Prints formatted data to the stream *os*.
-
-  **Example**::
-
-    fmt::print(cerr, "Don't {}!", "panic");
-  \endrst
- */
-template <typename S, typename... Args,
-          typename Char = enable_if_t<internal::is_string<S>::value, char_t<S>>>
-void print(std::basic_ostream<Char>& os, const S& format_str, Args&&... args) {
-  vprint(os, to_string_view(format_str),
-         {internal::make_args_checked<Args...>(format_str, args...)});
-}
-FMT_END_NAMESPACE
-
-#endif  // FMT_OSTREAM_H_

include/spdlog/fmt/bundled/posix.h

@@ -1,311 +0,0 @@
-// A C++ interface to POSIX functions.
-//
-// Copyright (c) 2012 - 2016, Victor Zverovich
-// All rights reserved.
-//
-// For the license information refer to format.h.
-
-#ifndef FMT_POSIX_H_
-#define FMT_POSIX_H_
-
-#if defined(__MINGW32__) || defined(__CYGWIN__)
-// Workaround MinGW bug https://sourceforge.net/p/mingw/bugs/2024/.
-#  undef __STRICT_ANSI__
-#endif
-
-#include <errno.h>
-#include <fcntl.h>   // for O_RDONLY
-#include <locale.h>  // for locale_t
-#include <stdio.h>
-#include <stdlib.h>  // for strtod_l
-
-#include <cstddef>
-
-#if defined __APPLE__ || defined(__FreeBSD__)
-#  include <xlocale.h>  // for LC_NUMERIC_MASK on OS X
-#endif
-
-#include "format.h"
-
-#ifndef FMT_POSIX
-#  if defined(_WIN32) && !defined(__MINGW32__)
-// Fix warnings about deprecated symbols.
-#    define FMT_POSIX(call) _##call
-#  else
-#    define FMT_POSIX(call) call
-#  endif
-#endif
-
-// Calls to system functions are wrapped in FMT_SYSTEM for testability.
-#ifdef FMT_SYSTEM
-#  define FMT_POSIX_CALL(call) FMT_SYSTEM(call)
-#else
-#  define FMT_SYSTEM(call) call
-#  ifdef _WIN32
-// Fix warnings about deprecated symbols.
-#    define FMT_POSIX_CALL(call) ::_##call
-#  else
-#    define FMT_POSIX_CALL(call) ::call
-#  endif
-#endif
-
-// Retries the expression while it evaluates to error_result and errno
-// equals to EINTR.
-#ifndef _WIN32
-#  define FMT_RETRY_VAL(result, expression, error_result) \
-    do {                                                  \
-      result = (expression);                              \
-    } while (result == error_result && errno == EINTR)
-#else
-#  define FMT_RETRY_VAL(result, expression, error_result) result = (expression)
-#endif
-
-#define FMT_RETRY(result, expression) FMT_RETRY_VAL(result, expression, -1)
-
-FMT_BEGIN_NAMESPACE
-
-/**
-  \rst
-  A reference to a null-terminated string. It can be constructed from a C
-  string or ``std::string``.
-
-  You can use one of the following type aliases for common character types:
-
-  +---------------+-----------------------------+
-  | Type          | Definition                  |
-  +===============+=============================+
-  | cstring_view  | basic_cstring_view<char>    |
-  +---------------+-----------------------------+
-  | wcstring_view | basic_cstring_view<wchar_t> |
-  +---------------+-----------------------------+
-
-  This class is most useful as a parameter type to allow passing
-  different types of strings to a function, for example::
-
-    template <typename... Args>
-    std::string format(cstring_view format_str, const Args & ... args);
-
-    format("{}", 42);
-    format(std::string("{}"), 42);
-  \endrst
- */
-template <typename Char> class basic_cstring_view {
- private:
-  const Char* data_;
-
- public:
-  /** Constructs a string reference object from a C string. */
-  basic_cstring_view(const Char* s) : data_(s) {}
-
-  /**
-    \rst
-    Constructs a string reference from an ``std::string`` object.
-    \endrst
-   */
-  basic_cstring_view(const std::basic_string<Char>& s) : data_(s.c_str()) {}
-
-  /** Returns the pointer to a C string. */
-  const Char* c_str() const { return data_; }
-};
-
-using cstring_view = basic_cstring_view<char>;
-using wcstring_view = basic_cstring_view<wchar_t>;
-
-// An error code.
-class error_code {
- private:
-  int value_;
-
- public:
-  explicit error_code(int value = 0) FMT_NOEXCEPT : value_(value) {}
-
-  int get() const FMT_NOEXCEPT { return value_; }
-};
-
-// A buffered file.
-class buffered_file {
- private:
-  FILE* file_;
-
-  friend class file;
-
-  explicit buffered_file(FILE* f) : file_(f) {}
-
- public:
-  // Constructs a buffered_file object which doesn't represent any file.
-  buffered_file() FMT_NOEXCEPT : file_(nullptr) {}
-
-  // Destroys the object closing the file it represents if any.
-  FMT_API ~buffered_file() FMT_NOEXCEPT;
-
- private:
-  buffered_file(const buffered_file&) = delete;
-  void operator=(const buffered_file&) = delete;
-
- public:
-  buffered_file(buffered_file&& other) FMT_NOEXCEPT : file_(other.file_) {
-    other.file_ = nullptr;
-  }
-
-  buffered_file& operator=(buffered_file&& other) {
-    close();
-    file_ = other.file_;
-    other.file_ = nullptr;
-    return *this;
-  }
-
-  // Opens a file.
-  FMT_API buffered_file(cstring_view filename, cstring_view mode);
-
-  // Closes the file.
-  FMT_API void close();
-
-  // Returns the pointer to a FILE object representing this file.
-  FILE* get() const FMT_NOEXCEPT { return file_; }
-
-  // We place parentheses around fileno to workaround a bug in some versions
-  // of MinGW that define fileno as a macro.
-  FMT_API int(fileno)() const;
-
-  void vprint(string_view format_str, format_args args) {
-    fmt::vprint(file_, format_str, args);
-  }
-
-  template <typename... Args>
-  inline void print(string_view format_str, const Args&... args) {
-    vprint(format_str, make_format_args(args...));
-  }
-};
-
-// A file. Closed file is represented by a file object with descriptor -1.
-// Methods that are not declared with FMT_NOEXCEPT may throw
-// fmt::system_error in case of failure. Note that some errors such as
-// closing the file multiple times will cause a crash on Windows rather
-// than an exception. You can get standard behavior by overriding the
-// invalid parameter handler with _set_invalid_parameter_handler.
-class file {
- private:
-  int fd_;  // File descriptor.
-
-  // Constructs a file object with a given descriptor.
-  explicit file(int fd) : fd_(fd) {}
-
- public:
-  // Possible values for the oflag argument to the constructor.
-  enum {
-    RDONLY = FMT_POSIX(O_RDONLY),  // Open for reading only.
-    WRONLY = FMT_POSIX(O_WRONLY),  // Open for writing only.
-    RDWR = FMT_POSIX(O_RDWR)       // Open for reading and writing.
-  };
-
-  // Constructs a file object which doesn't represent any file.
-  file() FMT_NOEXCEPT : fd_(-1) {}
-
-  // Opens a file and constructs a file object representing this file.
-  FMT_API file(cstring_view path, int oflag);
-
- private:
-  file(const file&) = delete;
-  void operator=(const file&) = delete;
-
- public:
-  file(file&& other) FMT_NOEXCEPT : fd_(other.fd_) { other.fd_ = -1; }
-
-  file& operator=(file&& other) {
-    close();
-    fd_ = other.fd_;
-    other.fd_ = -1;
-    return *this;
-  }
-
-  // Destroys the object closing the file it represents if any.
-  FMT_API ~file() FMT_NOEXCEPT;
-
-  // Returns the file descriptor.
-  int descriptor() const FMT_NOEXCEPT { return fd_; }
-
-  // Closes the file.
-  FMT_API void close();
-
-  // Returns the file size. The size has signed type for consistency with
-  // stat::st_size.
-  FMT_API long long size() const;
-
-  // Attempts to read count bytes from the file into the specified buffer.
-  FMT_API std::size_t read(void* buffer, std::size_t count);
-
-  // Attempts to write count bytes from the specified buffer to the file.
-  FMT_API std::size_t write(const void* buffer, std::size_t count);
-
-  // Duplicates a file descriptor with the dup function and returns
-  // the duplicate as a file object.
-  FMT_API static file dup(int fd);
-
-  // Makes fd be the copy of this file descriptor, closing fd first if
-  // necessary.
-  FMT_API void dup2(int fd);
-
-  // Makes fd be the copy of this file descriptor, closing fd first if
-  // necessary.
-  FMT_API void dup2(int fd, error_code& ec) FMT_NOEXCEPT;
-
-  // Creates a pipe setting up read_end and write_end file objects for reading
-  // and writing respectively.
-  FMT_API static void pipe(file& read_end, file& write_end);
-
-  // Creates a buffered_file object associated with this file and detaches
-  // this file object from the file.
-  FMT_API buffered_file fdopen(const char* mode);
-};
-
-// Returns the memory page size.
-long getpagesize();
-
-#ifdef FMT_LOCALE
-// A "C" numeric locale.
-class Locale {
- private:
-#  ifdef _WIN32
-  using locale_t = _locale_t;
-
-  enum { LC_NUMERIC_MASK = LC_NUMERIC };
-
-  static locale_t newlocale(int category_mask, const char* locale, locale_t) {
-    return _create_locale(category_mask, locale);
-  }
-
-  static void freelocale(locale_t locale) { _free_locale(locale); }
-
-  static double strtod_l(const char* nptr, char** endptr, _locale_t locale) {
-    return _strtod_l(nptr, endptr, locale);
-  }
-#  endif
-
-  locale_t locale_;
-
-  Locale(const Locale&) = delete;
-  void operator=(const Locale&) = delete;
-
- public:
-  using type = locale_t;
-
-  Locale() : locale_(newlocale(LC_NUMERIC_MASK, "C", nullptr)) {
-    if (!locale_) FMT_THROW(system_error(errno, "cannot create locale"));
-  }
-  ~Locale() { freelocale(locale_); }
-
-  type get() const { return locale_; }
-
-  // Converts string to floating-point number and advances str past the end
-  // of the parsed input.
-  double strtod(const char*& str) const {
-    char* end = nullptr;
-    double result = strtod_l(str, &end, locale_);
-    str = end;
-    return result;
-  }
-};
-#endif  // FMT_LOCALE
-FMT_END_NAMESPACE
-
-#endif  // FMT_POSIX_H_

include/spdlog/fmt/bundled/printf.h

@@ -1,715 +0,0 @@
-// Formatting library for C++
-//
-// Copyright (c) 2012 - 2016, Victor Zverovich
-// All rights reserved.
-//
-// For the license information refer to format.h.
-
-#ifndef FMT_PRINTF_H_
-#define FMT_PRINTF_H_
-
-#include <algorithm>  // std::fill_n
-#include <limits>     // std::numeric_limits
-
-#include "ostream.h"
-
-FMT_BEGIN_NAMESPACE
-namespace internal {
-
-// A helper function to suppress bogus "conditional expression is constant"
-// warnings.
-template <typename T> inline T const_check(T value) { return value; }
-
-// Checks if a value fits in int - used to avoid warnings about comparing
-// signed and unsigned integers.
-template <bool IsSigned> struct int_checker {
-  template <typename T> static bool fits_in_int(T value) {
-    unsigned max = std::numeric_limits<int>::max();
-    return value <= max;
-  }
-  static bool fits_in_int(bool) { return true; }
-};
-
-template <> struct int_checker<true> {
-  template <typename T> static bool fits_in_int(T value) {
-    return value >= std::numeric_limits<int>::min() &&
-           value <= std::numeric_limits<int>::max();
-  }
-  static bool fits_in_int(int) { return true; }
-};
-
-class printf_precision_handler {
- public:
-  template <typename T, FMT_ENABLE_IF(std::is_integral<T>::value)>
-  int operator()(T value) {
-    if (!int_checker<std::numeric_limits<T>::is_signed>::fits_in_int(value))
-      FMT_THROW(format_error("number is too big"));
-    return (std::max)(static_cast<int>(value), 0);
-  }
-
-  template <typename T, FMT_ENABLE_IF(!std::is_integral<T>::value)>
-  int operator()(T) {
-    FMT_THROW(format_error("precision is not integer"));
-    return 0;
-  }
-};
-
-// An argument visitor that returns true iff arg is a zero integer.
-class is_zero_int {
- public:
-  template <typename T, FMT_ENABLE_IF(std::is_integral<T>::value)>
-  bool operator()(T value) {
-    return value == 0;
-  }
-
-  template <typename T, FMT_ENABLE_IF(!std::is_integral<T>::value)>
-  bool operator()(T) {
-    return false;
-  }
-};
-
-template <typename T> struct make_unsigned_or_bool : std::make_unsigned<T> {};
-
-template <> struct make_unsigned_or_bool<bool> { using type = bool; };
-
-template <typename T, typename Context> class arg_converter {
- private:
-  using char_type = typename Context::char_type;
-
-  basic_format_arg<Context>& arg_;
-  char_type type_;
-
- public:
-  arg_converter(basic_format_arg<Context>& arg, char_type type)
-      : arg_(arg), type_(type) {}
-
-  void operator()(bool value) {
-    if (type_ != 's') operator()<bool>(value);
-  }
-
-  template <typename U, FMT_ENABLE_IF(std::is_integral<U>::value)>
-  void operator()(U value) {
-    bool is_signed = type_ == 'd' || type_ == 'i';
-    using target_type = conditional_t<std::is_same<T, void>::value, U, T>;
-    if (const_check(sizeof(target_type) <= sizeof(int))) {
-      // Extra casts are used to silence warnings.
-      if (is_signed) {
-        arg_ = internal::make_arg<Context>(
-            static_cast<int>(static_cast<target_type>(value)));
-      } else {
-        using unsigned_type = typename make_unsigned_or_bool<target_type>::type;
-        arg_ = internal::make_arg<Context>(
-            static_cast<unsigned>(static_cast<unsigned_type>(value)));
-      }
-    } else {
-      if (is_signed) {
-        // glibc's printf doesn't sign extend arguments of smaller types:
-        //   std::printf("%lld", -42);  // prints "4294967254"
-        // but we don't have to do the same because it's a UB.
-        arg_ = internal::make_arg<Context>(static_cast<long long>(value));
-      } else {
-        arg_ = internal::make_arg<Context>(
-            static_cast<typename make_unsigned_or_bool<U>::type>(value));
-      }
-    }
-  }
-
-  template <typename U, FMT_ENABLE_IF(!std::is_integral<U>::value)>
-  void operator()(U) {}  // No conversion needed for non-integral types.
-};
-
-// Converts an integer argument to T for printf, if T is an integral type.
-// If T is void, the argument is converted to corresponding signed or unsigned
-// type depending on the type specifier: 'd' and 'i' - signed, other -
-// unsigned).
-template <typename T, typename Context, typename Char>
-void convert_arg(basic_format_arg<Context>& arg, Char type) {
-  visit_format_arg(arg_converter<T, Context>(arg, type), arg);
-}
-
-// Converts an integer argument to char for printf.
-template <typename Context> class char_converter {
- private:
-  basic_format_arg<Context>& arg_;
-
- public:
-  explicit char_converter(basic_format_arg<Context>& arg) : arg_(arg) {}
-
-  template <typename T, FMT_ENABLE_IF(std::is_integral<T>::value)>
-  void operator()(T value) {
-    arg_ = internal::make_arg<Context>(
-        static_cast<typename Context::char_type>(value));
-  }
-
-  template <typename T, FMT_ENABLE_IF(!std::is_integral<T>::value)>
-  void operator()(T) {}  // No conversion needed for non-integral types.
-};
-
-// Checks if an argument is a valid printf width specifier and sets
-// left alignment if it is negative.
-template <typename Char> class printf_width_handler {
- private:
-  using format_specs = basic_format_specs<Char>;
-
-  format_specs& specs_;
-
- public:
-  explicit printf_width_handler(format_specs& specs) : specs_(specs) {}
-
-  template <typename T, FMT_ENABLE_IF(std::is_integral<T>::value)>
-  unsigned operator()(T value) {
-    auto width = static_cast<uint32_or_64_t<T>>(value);
-    if (internal::is_negative(value)) {
-      specs_.align = align::left;
-      width = 0 - width;
-    }
-    unsigned int_max = std::numeric_limits<int>::max();
-    if (width > int_max) FMT_THROW(format_error("number is too big"));
-    return static_cast<unsigned>(width);
-  }
-
-  template <typename T, FMT_ENABLE_IF(!std::is_integral<T>::value)>
-  unsigned operator()(T) {
-    FMT_THROW(format_error("width is not integer"));
-    return 0;
-  }
-};
-
-template <typename Char, typename Context>
-void printf(buffer<Char>& buf, basic_string_view<Char> format,
-            basic_format_args<Context> args) {
-  Context(std::back_inserter(buf), format, args).format();
-}
-
-template <typename OutputIt, typename Char, typename Context>
-internal::truncating_iterator<OutputIt> printf(
-    internal::truncating_iterator<OutputIt> it, basic_string_view<Char> format,
-    basic_format_args<Context> args) {
-  return Context(it, format, args).format();
-}
-}  // namespace internal
-
-using internal::printf;  // For printing into memory_buffer.
-
-template <typename Range> class printf_arg_formatter;
-
-template <typename OutputIt, typename Char> class basic_printf_context;
-
-/**
-  \rst
-  The ``printf`` argument formatter.
-  \endrst
- */
-template <typename Range>
-class printf_arg_formatter : public internal::arg_formatter_base<Range> {
- public:
-  using iterator = typename Range::iterator;
-
- private:
-  using char_type = typename Range::value_type;
-  using base = internal::arg_formatter_base<Range>;
-  using context_type = basic_printf_context<iterator, char_type>;
-
-  context_type& context_;
-
-  void write_null_pointer(char) {
-    this->specs()->type = 0;
-    this->write("(nil)");
-  }
-
-  void write_null_pointer(wchar_t) {
-    this->specs()->type = 0;
-    this->write(L"(nil)");
-  }
-
- public:
-  using format_specs = typename base::format_specs;
-
-  /**
-    \rst
-    Constructs an argument formatter object.
-    *buffer* is a reference to the output buffer and *specs* contains format
-    specifier information for standard argument types.
-    \endrst
-   */
-  printf_arg_formatter(iterator iter, format_specs& specs, context_type& ctx)
-      : base(Range(iter), &specs, internal::locale_ref()), context_(ctx) {}
-
-  template <typename T, FMT_ENABLE_IF(std::is_integral<T>::value)>
-  iterator operator()(T value) {
-    // MSVC2013 fails to compile separate overloads for bool and char_type so
-    // use std::is_same instead.
-    if (std::is_same<T, bool>::value) {
-      format_specs& fmt_specs = *this->specs();
-      if (fmt_specs.type != 's') return base::operator()(value ? 1 : 0);
-      fmt_specs.type = 0;
-      this->write(value != 0);
-    } else if (std::is_same<T, char_type>::value) {
-      format_specs& fmt_specs = *this->specs();
-      if (fmt_specs.type && fmt_specs.type != 'c')
-        return (*this)(static_cast<int>(value));
-      fmt_specs.sign = sign::none;
-      fmt_specs.alt = false;
-      fmt_specs.align = align::right;
-      return base::operator()(value);
-    } else {
-      return base::operator()(value);
-    }
-    return this->out();
-  }
-
-  template <typename T, FMT_ENABLE_IF(std::is_floating_point<T>::value)>
-  iterator operator()(T value) {
-    return base::operator()(value);
-  }
-
-  /** Formats a null-terminated C string. */
-  iterator operator()(const char* value) {
-    if (value)
-      base::operator()(value);
-    else if (this->specs()->type == 'p')
-      write_null_pointer(char_type());
-    else
-      this->write("(null)");
-    return this->out();
-  }
-
-  /** Formats a null-terminated wide C string. */
-  iterator operator()(const wchar_t* value) {
-    if (value)
-      base::operator()(value);
-    else if (this->specs()->type == 'p')
-      write_null_pointer(char_type());
-    else
-      this->write(L"(null)");
-    return this->out();
-  }
-
-  iterator operator()(basic_string_view<char_type> value) {
-    return base::operator()(value);
-  }
-
-  iterator operator()(monostate value) { return base::operator()(value); }
-
-  /** Formats a pointer. */
-  iterator operator()(const void* value) {
-    if (value) return base::operator()(value);
-    this->specs()->type = 0;
-    write_null_pointer(char_type());
-    return this->out();
-  }
-
-  /** Formats an argument of a custom (user-defined) type. */
-  iterator operator()(typename basic_format_arg<context_type>::handle handle) {
-    handle.format(context_.parse_context(), context_);
-    return this->out();
-  }
-};
-
-template <typename T> struct printf_formatter {
-  template <typename ParseContext>
-  auto parse(ParseContext& ctx) -> decltype(ctx.begin()) {
-    return ctx.begin();
-  }
-
-  template <typename FormatContext>
-  auto format(const T& value, FormatContext& ctx) -> decltype(ctx.out()) {
-    internal::format_value(internal::get_container(ctx.out()), value);
-    return ctx.out();
-  }
-};
-
-/** This template formats data and writes the output to a writer. */
-template <typename OutputIt, typename Char> class basic_printf_context {
- public:
-  /** The character type for the output. */
-  using char_type = Char;
-  using format_arg = basic_format_arg<basic_printf_context>;
-  template <typename T> using formatter_type = printf_formatter<T>;
-
- private:
-  using format_specs = basic_format_specs<char_type>;
-
-  OutputIt out_;
-  basic_format_args<basic_printf_context> args_;
-  basic_parse_context<Char> parse_ctx_;
-
-  static void parse_flags(format_specs& specs, const Char*& it,
-                          const Char* end);
-
-  // Returns the argument with specified index or, if arg_index is equal
-  // to the maximum unsigned value, the next argument.
-  format_arg get_arg(unsigned arg_index = std::numeric_limits<unsigned>::max());
-
-  // Parses argument index, flags and width and returns the argument index.
-  unsigned parse_header(const Char*& it, const Char* end, format_specs& specs);
-
- public:
-  /**
-   \rst
-   Constructs a ``printf_context`` object. References to the arguments and
-   the writer are stored in the context object so make sure they have
-   appropriate lifetimes.
-   \endrst
-   */
-  basic_printf_context(OutputIt out, basic_string_view<char_type> format_str,
-                       basic_format_args<basic_printf_context> args)
-      : out_(out), args_(args), parse_ctx_(format_str) {}
-
-  OutputIt out() { return out_; }
-  void advance_to(OutputIt it) { out_ = it; }
-
-  format_arg arg(unsigned id) const { return args_.get(id); }
-
-  basic_parse_context<Char>& parse_context() { return parse_ctx_; }
-
-  FMT_CONSTEXPR void on_error(const char* message) {
-    parse_ctx_.on_error(message);
-  }
-
-  /** Formats stored arguments and writes the output to the range. */
-  template <typename ArgFormatter =
-                printf_arg_formatter<internal::buffer_range<Char>>>
-  OutputIt format();
-};
-
-template <typename OutputIt, typename Char>
-void basic_printf_context<OutputIt, Char>::parse_flags(format_specs& specs,
-                                                       const Char*& it,
-                                                       const Char* end) {
-  for (; it != end; ++it) {
-    switch (*it) {
-    case '-':
-      specs.align = align::left;
-      break;
-    case '+':
-      specs.sign = sign::plus;
-      break;
-    case '0':
-      specs.fill[0] = '0';
-      break;
-    case ' ':
-      specs.sign = sign::space;
-      break;
-    case '#':
-      specs.alt = true;
-      break;
-    default:
-      return;
-    }
-  }
-}
-
-template <typename OutputIt, typename Char>
-typename basic_printf_context<OutputIt, Char>::format_arg
-basic_printf_context<OutputIt, Char>::get_arg(unsigned arg_index) {
-  if (arg_index == std::numeric_limits<unsigned>::max())
-    arg_index = parse_ctx_.next_arg_id();
-  else
-    parse_ctx_.check_arg_id(--arg_index);
-  return internal::get_arg(*this, arg_index);
-}
-
-template <typename OutputIt, typename Char>
-unsigned basic_printf_context<OutputIt, Char>::parse_header(
-    const Char*& it, const Char* end, format_specs& specs) {
-  unsigned arg_index = std::numeric_limits<unsigned>::max();
-  char_type c = *it;
-  if (c >= '0' && c <= '9') {
-    // Parse an argument index (if followed by '$') or a width possibly
-    // preceded with '0' flag(s).
-    internal::error_handler eh;
-    unsigned value = parse_nonnegative_int(it, end, eh);
-    if (it != end && *it == '$') {  // value is an argument index
-      ++it;
-      arg_index = value;
-    } else {
-      if (c == '0') specs.fill[0] = '0';
-      if (value != 0) {
-        // Nonzero value means that we parsed width and don't need to
-        // parse it or flags again, so return now.
-        specs.width = value;
-        return arg_index;
-      }
-    }
-  }
-  parse_flags(specs, it, end);
-  // Parse width.
-  if (it != end) {
-    if (*it >= '0' && *it <= '9') {
-      internal::error_handler eh;
-      specs.width = parse_nonnegative_int(it, end, eh);
-    } else if (*it == '*') {
-      ++it;
-      specs.width = visit_format_arg(
-          internal::printf_width_handler<char_type>(specs), get_arg());
-    }
-  }
-  return arg_index;
-}
-
-template <typename OutputIt, typename Char>
-template <typename ArgFormatter>
-OutputIt basic_printf_context<OutputIt, Char>::format() {
-  auto out = this->out();
-  const Char* start = parse_ctx_.begin();
-  const Char* end = parse_ctx_.end();
-  auto it = start;
-  while (it != end) {
-    char_type c = *it++;
-    if (c != '%') continue;
-    if (it != end && *it == c) {
-      out = std::copy(start, it, out);
-      start = ++it;
-      continue;
-    }
-    out = std::copy(start, it - 1, out);
-
-    format_specs specs;
-    specs.align = align::right;
-
-    // Parse argument index, flags and width.
-    unsigned arg_index = parse_header(it, end, specs);
-
-    // Parse precision.
-    if (it != end && *it == '.') {
-      ++it;
-      c = it != end ? *it : 0;
-      if ('0' <= c && c <= '9') {
-        internal::error_handler eh;
-        specs.precision = static_cast<int>(parse_nonnegative_int(it, end, eh));
-      } else if (c == '*') {
-        ++it;
-        specs.precision =
-            visit_format_arg(internal::printf_precision_handler(), get_arg());
-      } else {
-        specs.precision = 0;
-      }
-    }
-
-    format_arg arg = get_arg(arg_index);
-    if (specs.alt && visit_format_arg(internal::is_zero_int(), arg))
-      specs.alt = false;
-    if (specs.fill[0] == '0') {
-      if (arg.is_arithmetic())
-        specs.align = align::numeric;
-      else
-        specs.fill[0] = ' ';  // Ignore '0' flag for non-numeric types.
-    }
-
-    // Parse length and convert the argument to the required type.
-    c = it != end ? *it++ : 0;
-    char_type t = it != end ? *it : 0;
-    using internal::convert_arg;
-    switch (c) {
-    case 'h':
-      if (t == 'h') {
-        ++it;
-        t = it != end ? *it : 0;
-        convert_arg<signed char>(arg, t);
-      } else {
-        convert_arg<short>(arg, t);
-      }
-      break;
-    case 'l':
-      if (t == 'l') {
-        ++it;
-        t = it != end ? *it : 0;
-        convert_arg<long long>(arg, t);
-      } else {
-        convert_arg<long>(arg, t);
-      }
-      break;
-    case 'j':
-      convert_arg<intmax_t>(arg, t);
-      break;
-    case 'z':
-      convert_arg<std::size_t>(arg, t);
-      break;
-    case 't':
-      convert_arg<std::ptrdiff_t>(arg, t);
-      break;
-    case 'L':
-      // printf produces garbage when 'L' is omitted for long double, no
-      // need to do the same.
-      break;
-    default:
-      --it;
-      convert_arg<void>(arg, c);
-    }
-
-    // Parse type.
-    if (it == end) FMT_THROW(format_error("invalid format string"));
-    specs.type = static_cast<char>(*it++);
-    if (arg.is_integral()) {
-      // Normalize type.
-      switch (specs.type) {
-      case 'i':
-      case 'u':
-        specs.type = 'd';
-        break;
-      case 'c':
-        visit_format_arg(internal::char_converter<basic_printf_context>(arg),
-                         arg);
-        break;
-      }
-    }
-
-    start = it;
-
-    // Format argument.
-    visit_format_arg(ArgFormatter(out, specs, *this), arg);
-  }
-  return std::copy(start, it, out);
-}
-
-template <typename Char>
-using basic_printf_context_t =
-    basic_printf_context<std::back_insert_iterator<internal::buffer<Char>>,
-                         Char>;
-
-using printf_context = basic_printf_context_t<char>;
-using wprintf_context = basic_printf_context_t<wchar_t>;
-
-using printf_args = basic_format_args<printf_context>;
-using wprintf_args = basic_format_args<wprintf_context>;
-
-/**
-  \rst
-  Constructs an `~fmt::format_arg_store` object that contains references to
-  arguments and can be implicitly converted to `~fmt::printf_args`.
-  \endrst
- */
-template <typename... Args>
-inline format_arg_store<printf_context, Args...> make_printf_args(
-    const Args&... args) {
-  return {args...};
-}
-
-/**
-  \rst
-  Constructs an `~fmt::format_arg_store` object that contains references to
-  arguments and can be implicitly converted to `~fmt::wprintf_args`.
-  \endrst
- */
-template <typename... Args>
-inline format_arg_store<wprintf_context, Args...> make_wprintf_args(
-    const Args&... args) {
-  return {args...};
-}
-
-template <typename S, typename Char = char_t<S>>
-inline std::basic_string<Char> vsprintf(
-    const S& format, basic_format_args<basic_printf_context_t<Char>> args) {
-  basic_memory_buffer<Char> buffer;
-  printf(buffer, to_string_view(format), args);
-  return to_string(buffer);
-}
-
-/**
-  \rst
-  Formats arguments and returns the result as a string.
-
-  **Example**::
-
-    std::string message = fmt::sprintf("The answer is %d", 42);
-  \endrst
-*/
-template <typename S, typename... Args,
-          typename Char = enable_if_t<internal::is_string<S>::value, char_t<S>>>
-inline std::basic_string<Char> sprintf(const S& format, const Args&... args) {
-  using context = basic_printf_context_t<Char>;
-  return vsprintf(to_string_view(format), {make_format_args<context>(args...)});
-}
-
-template <typename S, typename Char = char_t<S>>
-inline int vfprintf(std::FILE* f, const S& format,
-                    basic_format_args<basic_printf_context_t<Char>> args) {
-  basic_memory_buffer<Char> buffer;
-  printf(buffer, to_string_view(format), args);
-  std::size_t size = buffer.size();
-  return std::fwrite(buffer.data(), sizeof(Char), size, f) < size
-             ? -1
-             : static_cast<int>(size);
-}
-
-/**
-  \rst
-  Prints formatted data to the file *f*.
-
-  **Example**::
-
-    fmt::fprintf(stderr, "Don't %s!", "panic");
-  \endrst
- */
-template <typename S, typename... Args,
-          typename Char = enable_if_t<internal::is_string<S>::value, char_t<S>>>
-inline int fprintf(std::FILE* f, const S& format, const Args&... args) {
-  using context = basic_printf_context_t<Char>;
-  return vfprintf(f, to_string_view(format),
-                  {make_format_args<context>(args...)});
-}
-
-template <typename S, typename Char = char_t<S>>
-inline int vprintf(const S& format,
-                   basic_format_args<basic_printf_context_t<Char>> args) {
-  return vfprintf(stdout, to_string_view(format), args);
-}
-
-/**
-  \rst
-  Prints formatted data to ``stdout``.
-
-  **Example**::
-
-    fmt::printf("Elapsed time: %.2f seconds", 1.23);
-  \endrst
- */
-template <typename S, typename... Args,
-          FMT_ENABLE_IF(internal::is_string<S>::value)>
-inline int printf(const S& format_str, const Args&... args) {
-  using context = basic_printf_context_t<char_t<S>>;
-  return vprintf(to_string_view(format_str),
-                 {make_format_args<context>(args...)});
-}
-
-template <typename S, typename Char = char_t<S>>
-inline int vfprintf(std::basic_ostream<Char>& os, const S& format,
-                    basic_format_args<basic_printf_context_t<Char>> args) {
-  basic_memory_buffer<Char> buffer;
-  printf(buffer, to_string_view(format), args);
-  internal::write(os, buffer);
-  return static_cast<int>(buffer.size());
-}
-
-/** Formats arguments and writes the output to the range. */
-template <typename ArgFormatter, typename Char,
-          typename Context =
-              basic_printf_context<typename ArgFormatter::iterator, Char>>
-typename ArgFormatter::iterator vprintf(internal::buffer<Char>& out,
-                                        basic_string_view<Char> format_str,
-                                        basic_format_args<Context> args) {
-  typename ArgFormatter::iterator iter(out);
-  Context(iter, format_str, args).template format<ArgFormatter>();
-  return iter;
-}
-
-/**
-  \rst
-  Prints formatted data to the stream *os*.
-
-  **Example**::
-
-    fmt::fprintf(cerr, "Don't %s!", "panic");
-  \endrst
- */
-template <typename S, typename... Args, typename Char = char_t<S>>
-inline int fprintf(std::basic_ostream<Char>& os, const S& format_str,
-                   const Args&... args) {
-  using context = basic_printf_context_t<Char>;
-  return vfprintf(os, to_string_view(format_str),
-                  {make_format_args<context>(args...)});
-}
-FMT_END_NAMESPACE
-
-#endif  // FMT_PRINTF_H_

include/spdlog/fmt/bundled/ranges.h

@@ -1,288 +0,0 @@
-// Formatting library for C++ - experimental range support
-//
-// Copyright (c) 2012 - present, Victor Zverovich
-// All rights reserved.
-//
-// For the license information refer to format.h.
-//
-// Copyright (c) 2018 - present, Remotion (Igor Schulz)
-// All Rights Reserved
-// {fmt} support for ranges, containers and types tuple interface.
-
-#ifndef FMT_RANGES_H_
-#define FMT_RANGES_H_
-
-#include <type_traits>
-#include "format.h"
-
-// output only up to N items from the range.
-#ifndef FMT_RANGE_OUTPUT_LENGTH_LIMIT
-#  define FMT_RANGE_OUTPUT_LENGTH_LIMIT 256
-#endif
-
-FMT_BEGIN_NAMESPACE
-
-template <typename Char> struct formatting_base {
-  template <typename ParseContext>
-  FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) {
-    return ctx.begin();
-  }
-};
-
-template <typename Char, typename Enable = void>
-struct formatting_range : formatting_base<Char> {
-  static FMT_CONSTEXPR_DECL const std::size_t range_length_limit =
-      FMT_RANGE_OUTPUT_LENGTH_LIMIT;  // output only up to N items from the
-                                      // range.
-  Char prefix;
-  Char delimiter;
-  Char postfix;
-  formatting_range() : prefix('{'), delimiter(','), postfix('}') {}
-  static FMT_CONSTEXPR_DECL const bool add_delimiter_spaces = true;
-  static FMT_CONSTEXPR_DECL const bool add_prepostfix_space = false;
-};
-
-template <typename Char, typename Enable = void>
-struct formatting_tuple : formatting_base<Char> {
-  Char prefix;
-  Char delimiter;
-  Char postfix;
-  formatting_tuple() : prefix('('), delimiter(','), postfix(')') {}
-  static FMT_CONSTEXPR_DECL const bool add_delimiter_spaces = true;
-  static FMT_CONSTEXPR_DECL const bool add_prepostfix_space = false;
-};
-
-namespace internal {
-
-template <typename RangeT, typename OutputIterator>
-OutputIterator copy(const RangeT& range, OutputIterator out) {
-  for (auto it = range.begin(), end = range.end(); it != end; ++it)
-    *out++ = *it;
-  return out;
-}
-
-template <typename OutputIterator>
-OutputIterator copy(const char* str, OutputIterator out) {
-  while (*str) *out++ = *str++;
-  return out;
-}
-
-template <typename OutputIterator>
-OutputIterator copy(char ch, OutputIterator out) {
-  *out++ = ch;
-  return out;
-}
-
-/// Return true value if T has std::string interface, like std::string_view.
-template <typename T> class is_like_std_string {
-  template <typename U>
-  static auto check(U* p)
-      -> decltype((void)p->find('a'), p->length(), (void)p->data(), int());
-  template <typename> static void check(...);
-
- public:
-  static FMT_CONSTEXPR_DECL const bool value =
-      is_string<T>::value || !std::is_void<decltype(check<T>(nullptr))>::value;
-};
-
-template <typename Char>
-struct is_like_std_string<fmt::basic_string_view<Char>> : std::true_type {};
-
-template <typename... Ts> struct conditional_helper {};
-
-template <typename T, typename _ = void> struct is_range_ : std::false_type {};
-
-#if !FMT_MSC_VER || FMT_MSC_VER > 1800
-template <typename T>
-struct is_range_<
-    T, conditional_t<false,
-                     conditional_helper<decltype(std::declval<T>().begin()),
-                                        decltype(std::declval<T>().end())>,
-                     void>> : std::true_type {};
-#endif
-
-/// tuple_size and tuple_element check.
-template <typename T> class is_tuple_like_ {
-  template <typename U>
-  static auto check(U* p)
-      -> decltype(std::tuple_size<U>::value,
-                  (void)std::declval<typename std::tuple_element<0, U>::type>(),
-                  int());
-  template <typename> static void check(...);
-
- public:
-  static FMT_CONSTEXPR_DECL const bool value =
-      !std::is_void<decltype(check<T>(nullptr))>::value;
-};
-
-// Check for integer_sequence
-#if defined(__cpp_lib_integer_sequence) || FMT_MSC_VER >= 1900
-template <typename T, T... N>
-using integer_sequence = std::integer_sequence<T, N...>;
-template <std::size_t... N> using index_sequence = std::index_sequence<N...>;
-template <std::size_t N>
-using make_index_sequence = std::make_index_sequence<N>;
-#else
-template <typename T, T... N> struct integer_sequence {
-  using value_type = T;
-
-  static FMT_CONSTEXPR std::size_t size() { return sizeof...(N); }
-};
-
-template <std::size_t... N>
-using index_sequence = integer_sequence<std::size_t, N...>;
-
-template <typename T, std::size_t N, T... Ns>
-struct make_integer_sequence : make_integer_sequence<T, N - 1, N - 1, Ns...> {};
-template <typename T, T... Ns>
-struct make_integer_sequence<T, 0, Ns...> : integer_sequence<T, Ns...> {};
-
-template <std::size_t N>
-using make_index_sequence = make_integer_sequence<std::size_t, N>;
-#endif
-
-template <class Tuple, class F, size_t... Is>
-void for_each(index_sequence<Is...>, Tuple&& tup, F&& f) FMT_NOEXCEPT {
-  using std::get;
-  // using free function get<I>(T) now.
-  const int _[] = {0, ((void)f(get<Is>(tup)), 0)...};
-  (void)_;  // blocks warnings
-}
-
-template <class T>
-FMT_CONSTEXPR make_index_sequence<std::tuple_size<T>::value> get_indexes(
-    T const&) {
-  return {};
-}
-
-template <class Tuple, class F> void for_each(Tuple&& tup, F&& f) {
-  const auto indexes = get_indexes(tup);
-  for_each(indexes, std::forward<Tuple>(tup), std::forward<F>(f));
-}
-
-template <typename Arg, FMT_ENABLE_IF(!is_like_std_string<
-                                      typename std::decay<Arg>::type>::value)>
-FMT_CONSTEXPR const char* format_str_quoted(bool add_space, const Arg&) {
-  return add_space ? " {}" : "{}";
-}
-
-template <typename Arg, FMT_ENABLE_IF(is_like_std_string<
-                                      typename std::decay<Arg>::type>::value)>
-FMT_CONSTEXPR const char* format_str_quoted(bool add_space, const Arg&) {
-  return add_space ? " \"{}\"" : "\"{}\"";
-}
-
-FMT_CONSTEXPR const char* format_str_quoted(bool add_space, const char*) {
-  return add_space ? " \"{}\"" : "\"{}\"";
-}
-FMT_CONSTEXPR const wchar_t* format_str_quoted(bool add_space, const wchar_t*) {
-  return add_space ? L" \"{}\"" : L"\"{}\"";
-}
-
-FMT_CONSTEXPR const char* format_str_quoted(bool add_space, const char) {
-  return add_space ? " '{}'" : "'{}'";
-}
-FMT_CONSTEXPR const wchar_t* format_str_quoted(bool add_space, const wchar_t) {
-  return add_space ? L" '{}'" : L"'{}'";
-}
-
-}  // namespace internal
-
-template <typename T> struct is_tuple_like {
-  static FMT_CONSTEXPR_DECL const bool value =
-      internal::is_tuple_like_<T>::value && !internal::is_range_<T>::value;
-};
-
-template <typename TupleT, typename Char>
-struct formatter<TupleT, Char, enable_if_t<fmt::is_tuple_like<TupleT>::value>> {
- private:
-  // C++11 generic lambda for format()
-  template <typename FormatContext> struct format_each {
-    template <typename T> void operator()(const T& v) {
-      if (i > 0) {
-        if (formatting.add_prepostfix_space) {
-          *out++ = ' ';
-        }
-        out = internal::copy(formatting.delimiter, out);
-      }
-      out = format_to(out,
-                      internal::format_str_quoted(
-                          (formatting.add_delimiter_spaces && i > 0), v),
-                      v);
-      ++i;
-    }
-
-    formatting_tuple<Char>& formatting;
-    std::size_t& i;
-    typename std::add_lvalue_reference<decltype(
-        std::declval<FormatContext>().out())>::type out;
-  };
-
- public:
-  formatting_tuple<Char> formatting;
-
-  template <typename ParseContext>
-  FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) {
-    return formatting.parse(ctx);
-  }
-
-  template <typename FormatContext = format_context>
-  auto format(const TupleT& values, FormatContext& ctx) -> decltype(ctx.out()) {
-    auto out = ctx.out();
-    std::size_t i = 0;
-    internal::copy(formatting.prefix, out);
-
-    internal::for_each(values, format_each<FormatContext>{formatting, i, out});
-    if (formatting.add_prepostfix_space) {
-      *out++ = ' ';
-    }
-    internal::copy(formatting.postfix, out);
-
-    return ctx.out();
-  }
-};
-
-template <typename T, typename Char> struct is_range {
-  static FMT_CONSTEXPR_DECL const bool value =
-      internal::is_range_<T>::value &&
-      !internal::is_like_std_string<T>::value &&
-      !std::is_convertible<T, std::basic_string<Char>>::value;
-};
-
-template <typename RangeT, typename Char>
-struct formatter<RangeT, Char,
-                 enable_if_t<fmt::is_range<RangeT, Char>::value>> {
-  formatting_range<Char> formatting;
-
-  template <typename ParseContext>
-  FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) {
-    return formatting.parse(ctx);
-  }
-
-  template <typename FormatContext>
-  typename FormatContext::iterator format(const RangeT& values,
-                                          FormatContext& ctx) {
-    auto out = internal::copy(formatting.prefix, ctx.out());
-    std::size_t i = 0;
-    for (auto it = values.begin(), end = values.end(); it != end; ++it) {
-      if (i > 0) {
-        if (formatting.add_prepostfix_space) *out++ = ' ';
-        out = internal::copy(formatting.delimiter, out);
-      }
-      out = format_to(out,
-                      internal::format_str_quoted(
-                          (formatting.add_delimiter_spaces && i > 0), *it),
-                      *it);
-      if (++i > formatting.range_length_limit) {
-        out = format_to(out, " ... <other elements>");
-        break;
-      }
-    }
-    if (formatting.add_prepostfix_space) *out++ = ' ';
-    return internal::copy(formatting.postfix, out);
-  }
-};
-
-FMT_END_NAMESPACE
-
-#endif  // FMT_RANGES_H_

include/spdlog/fmt/bundled/safe-duration-cast.h

@@ -1,293 +0,0 @@
-/*
- * For conversion between std::chrono::durations without undefined
- * behaviour or erroneous results.
- * This is a stripped down version of duration_cast, for inclusion in fmt.
- * See https://github.com/pauldreik/safe_duration_cast
- *
- * Copyright Paul Dreik 2019
- *
- * This file is licensed under the fmt license, see format.h
- */
-
-#include <chrono>
-#include <cmath>
-#include <limits>
-#include <type_traits>
-
-#include "format.h"
-
-FMT_BEGIN_NAMESPACE
-
-namespace safe_duration_cast {
-
-template <typename To, typename From,
-          FMT_ENABLE_IF(!std::is_same<From, To>::value &&
-                        std::numeric_limits<From>::is_signed ==
-                            std::numeric_limits<To>::is_signed)>
-FMT_CONSTEXPR To lossless_integral_conversion(const From from, int& ec) {
-  ec = 0;
-  using F = std::numeric_limits<From>;
-  using T = std::numeric_limits<To>;
-  static_assert(F::is_integer, "From must be integral");
-  static_assert(T::is_integer, "To must be integral");
-
-  // A and B are both signed, or both unsigned.
-  if (F::digits <= T::digits) {
-    // From fits in To without any problem.
-  } else {
-    // From does not always fit in To, resort to a dynamic check.
-    if (from < T::min() || from > T::max()) {
-      // outside range.
-      ec = 1;
-      return {};
-    }
-  }
-  return static_cast<To>(from);
-}
-
-/**
- * converts From to To, without loss. If the dynamic value of from
- * can't be converted to To without loss, ec is set.
- */
-template <typename To, typename From,
-          FMT_ENABLE_IF(!std::is_same<From, To>::value &&
-                        std::numeric_limits<From>::is_signed !=
-                            std::numeric_limits<To>::is_signed)>
-FMT_CONSTEXPR To lossless_integral_conversion(const From from, int& ec) {
-  ec = 0;
-  using F = std::numeric_limits<From>;
-  using T = std::numeric_limits<To>;
-  static_assert(F::is_integer, "From must be integral");
-  static_assert(T::is_integer, "To must be integral");
-
-  if (F::is_signed && !T::is_signed) {
-    // From may be negative, not allowed!
-    if (from < 0) {
-      ec = 1;
-      return {};
-    }
-
-    // From is positive. Can it always fit in To?
-    if (F::digits <= T::digits) {
-      // yes, From always fits in To.
-    } else {
-      // from may not fit in To, we have to do a dynamic check
-      if (from > static_cast<From>(T::max())) {
-        ec = 1;
-        return {};
-      }
-    }
-  }
-
-  if (!F::is_signed && T::is_signed) {
-    // can from be held in To?
-    if (F::digits < T::digits) {
-      // yes, From always fits in To.
-    } else {
-      // from may not fit in To, we have to do a dynamic check
-      if (from > static_cast<From>(T::max())) {
-        // outside range.
-        ec = 1;
-        return {};
-      }
-    }
-  }
-
-  // reaching here means all is ok for lossless conversion.
-  return static_cast<To>(from);
-
-}  // function
-
-template <typename To, typename From,
-          FMT_ENABLE_IF(std::is_same<From, To>::value)>
-FMT_CONSTEXPR To lossless_integral_conversion(const From from, int& ec) {
-  ec = 0;
-  return from;
-}  // function
-
-// clang-format off
-/**
- * converts From to To if possible, otherwise ec is set.
- *
- * input                            |    output
- * ---------------------------------|---------------
- * NaN                              | NaN
- * Inf                              | Inf
- * normal, fits in output           | converted (possibly lossy)
- * normal, does not fit in output   | ec is set
- * subnormal                        | best effort
- * -Inf                             | -Inf
- */
-// clang-format on
-template <typename To, typename From,
-          FMT_ENABLE_IF(!std::is_same<From, To>::value)>
-FMT_CONSTEXPR To safe_float_conversion(const From from, int& ec) {
-  ec = 0;
-  using T = std::numeric_limits<To>;
-  static_assert(std::is_floating_point<From>::value, "From must be floating");
-  static_assert(std::is_floating_point<To>::value, "To must be floating");
-
-  // catch the only happy case
-  if (std::isfinite(from)) {
-    if (from >= T::lowest() && from <= T::max()) {
-      return static_cast<To>(from);
-    }
-    // not within range.
-    ec = 1;
-    return {};
-  }
-
-  // nan and inf will be preserved
-  return static_cast<To>(from);
-}  // function
-
-template <typename To, typename From,
-          FMT_ENABLE_IF(std::is_same<From, To>::value)>
-FMT_CONSTEXPR To safe_float_conversion(const From from, int& ec) {
-  ec = 0;
-  static_assert(std::is_floating_point<From>::value, "From must be floating");
-  return from;
-}
-
-/**
- * safe duration cast between integral durations
- */
-template <typename To, typename FromRep, typename FromPeriod,
-          FMT_ENABLE_IF(std::is_integral<FromRep>::value),
-          FMT_ENABLE_IF(std::is_integral<typename To::rep>::value)>
-To safe_duration_cast(std::chrono::duration<FromRep, FromPeriod> from,
-                      int& ec) {
-  using From = std::chrono::duration<FromRep, FromPeriod>;
-  ec = 0;
-  // the basic idea is that we need to convert from count() in the from type
-  // to count() in the To type, by multiplying it with this:
-  using Factor = std::ratio_divide<typename From::period, typename To::period>;
-
-  static_assert(Factor::num > 0, "num must be positive");
-  static_assert(Factor::den > 0, "den must be positive");
-
-  // the conversion is like this: multiply from.count() with Factor::num
-  // /Factor::den and convert it to To::rep, all this without
-  // overflow/underflow. let's start by finding a suitable type that can hold
-  // both To, From and Factor::num
-  using IntermediateRep =
-      typename std::common_type<typename From::rep, typename To::rep,
-                                decltype(Factor::num)>::type;
-
-  // safe conversion to IntermediateRep
-  IntermediateRep count =
-      lossless_integral_conversion<IntermediateRep>(from.count(), ec);
-  if (ec) {
-    return {};
-  }
-  // multiply with Factor::num without overflow or underflow
-  if (Factor::num != 1) {
-    constexpr auto max1 =
-        std::numeric_limits<IntermediateRep>::max() / Factor::num;
-    if (count > max1) {
-      ec = 1;
-      return {};
-    }
-    constexpr auto min1 =
-        std::numeric_limits<IntermediateRep>::min() / Factor::num;
-    if (count < min1) {
-      ec = 1;
-      return {};
-    }
-    count *= Factor::num;
-  }
-
-  // this can't go wrong, right? den>0 is checked earlier.
-  if (Factor::den != 1) {
-    count /= Factor::den;
-  }
-  // convert to the to type, safely
-  using ToRep = typename To::rep;
-  const ToRep tocount = lossless_integral_conversion<ToRep>(count, ec);
-  if (ec) {
-    return {};
-  }
-  return To{tocount};
-}
-
-/**
- * safe duration_cast between floating point durations
- */
-template <typename To, typename FromRep, typename FromPeriod,
-          FMT_ENABLE_IF(std::is_floating_point<FromRep>::value),
-          FMT_ENABLE_IF(std::is_floating_point<typename To::rep>::value)>
-To safe_duration_cast(std::chrono::duration<FromRep, FromPeriod> from,
-                      int& ec) {
-  using From = std::chrono::duration<FromRep, FromPeriod>;
-  ec = 0;
-  if (std::isnan(from.count())) {
-    // nan in, gives nan out. easy.
-    return To{std::numeric_limits<typename To::rep>::quiet_NaN()};
-  }
-  // maybe we should also check if from is denormal, and decide what to do about
-  // it.
-
-  // +-inf should be preserved.
-  if (std::isinf(from.count())) {
-    return To{from.count()};
-  }
-
-  // the basic idea is that we need to convert from count() in the from type
-  // to count() in the To type, by multiplying it with this:
-  using Factor = std::ratio_divide<typename From::period, typename To::period>;
-
-  static_assert(Factor::num > 0, "num must be positive");
-  static_assert(Factor::den > 0, "den must be positive");
-
-  // the conversion is like this: multiply from.count() with Factor::num
-  // /Factor::den and convert it to To::rep, all this without
-  // overflow/underflow. let's start by finding a suitable type that can hold
-  // both To, From and Factor::num
-  using IntermediateRep =
-      typename std::common_type<typename From::rep, typename To::rep,
-                                decltype(Factor::num)>::type;
-
-  // force conversion of From::rep -> IntermediateRep to be safe,
-  // even if it will never happen be narrowing in this context.
-  IntermediateRep count =
-      safe_float_conversion<IntermediateRep>(from.count(), ec);
-  if (ec) {
-    return {};
-  }
-
-  // multiply with Factor::num without overflow or underflow
-  if (Factor::num != 1) {
-    constexpr auto max1 = std::numeric_limits<IntermediateRep>::max() /
-                          static_cast<IntermediateRep>(Factor::num);
-    if (count > max1) {
-      ec = 1;
-      return {};
-    }
-    constexpr auto min1 = std::numeric_limits<IntermediateRep>::lowest() /
-                          static_cast<IntermediateRep>(Factor::num);
-    if (count < min1) {
-      ec = 1;
-      return {};
-    }
-    count *= static_cast<IntermediateRep>(Factor::num);
-  }
-
-  // this can't go wrong, right? den>0 is checked earlier.
-  if (Factor::den != 1) {
-    using common_t = typename std::common_type<IntermediateRep, intmax_t>::type;
-    count /= static_cast<common_t>(Factor::den);
-  }
-
-  // convert to the to type, safely
-  using ToRep = typename To::rep;
-
-  const ToRep tocount = safe_float_conversion<ToRep>(count, ec);
-  if (ec) {
-    return {};
-  }
-  return To{tocount};
-}
-
-}  // namespace safe_duration_cast
-
-FMT_END_NAMESPACE

include/spdlog/fmt/fmt.h

@@ -1,27 +0,0 @@
-//
-// Copyright(c) 2016-2018 Gabi Melman.
-// Distributed under the MIT License (http://opensource.org/licenses/MIT)
-//
-
-#pragma once
-
-//
-// Include a bundled header-only copy of fmtlib or an external one.
-// By default spdlog include its own copy.
-//
-
-#if !defined(SPDLOG_FMT_EXTERNAL)
-#ifdef SPDLOG_HEADER_ONLY
-#ifndef FMT_HEADER_ONLY
-#define FMT_HEADER_ONLY
-#endif
-#endif
-#ifndef FMT_USE_WINDOWS_H
-#define FMT_USE_WINDOWS_H 0
-#endif
-#include "bundled/core.h"
-#include "bundled/format.h"
-#else // SPDLOG_FMT_EXTERNAL is defined - use external fmtlib
-#include "fmt/core.h"
-#include "fmt/format.h"
-#endif

include/spdlog/fmt/ostr.h

@@ -1,18 +0,0 @@
-//
-// Copyright(c) 2016 Gabi Melman.
-// Distributed under the MIT License (http://opensource.org/licenses/MIT)
-//
-
-#pragma once
-//
-// include bundled or external copy of fmtlib's ostream support
-//
-#if !defined(SPDLOG_FMT_EXTERNAL)
-#ifndef FMT_HEADER_ONLY
-#define FMT_HEADER_ONLY
-#endif
-#include "bundled/ostream.h"
-#include "fmt.h"
-#else
-#include <fmt/ostream.h>
-#endif

include/spdlog/formatter.h

@@ -3,16 +3,14 @@
 
 #pragma once
 
-#include "fmt/fmt.h"
-#include "spdlog/details/log_msg.h"
+#include "./details/log_msg.h"
 
 namespace spdlog {
 
-class formatter
-{
+class formatter {
 public:
     virtual ~formatter() = default;
     virtual void format(const details::log_msg &msg, memory_buf_t &dest) = 0;
     virtual std::unique_ptr<formatter> clone() const = 0;
 };
-} // namespace spdlog
+}  // namespace spdlog

include/spdlog/fwd.h

@@ -0,0 +1,15 @@
+// Copyright(c) 2015-present, Gabi Melman & spdlog contributors.
+// Distributed under the MIT License (http://opensource.org/licenses/MIT)
+
+#pragma once
+
+namespace spdlog {
+class logger;
+class formatter;
+enum class level;
+
+namespace sinks {
+class sink;
+}
+
+}  // namespace spdlog

include/spdlog/logger-inl.h

@@ -1,245 +0,0 @@
-// Copyright(c) 2015-present, Gabi Melman & spdlog contributors.
-// Distributed under the MIT License (http://opensource.org/licenses/MIT)
-
-#pragma once
-
-#ifndef SPDLOG_HEADER_ONLY
-#include "spdlog/logger.h"
-#endif
-
-#include "spdlog/sinks/sink.h"
-#include "spdlog/details/backtracer.h"
-#include "spdlog/details/pattern_formatter.h"
-
-#include <cstdio>
-
-namespace spdlog {
-
-// public methods
-SPDLOG_INLINE logger::logger(const logger &other)
-    : name_(other.name_)
-    , sinks_(other.sinks_)
-    , level_(other.level_.load(std::memory_order_relaxed))
-    , flush_level_(other.flush_level_.load(std::memory_order_relaxed))
-    , custom_err_handler_(other.custom_err_handler_)
-    , tracer_(other.tracer_)
-{}
-
-SPDLOG_INLINE logger::logger(logger &&other) SPDLOG_NOEXCEPT : name_(std::move(other.name_)),
-                                                               sinks_(std::move(other.sinks_)),
-                                                               level_(other.level_.load(std::memory_order_relaxed)),
-                                                               flush_level_(other.flush_level_.load(std::memory_order_relaxed)),
-                                                               custom_err_handler_(std::move(other.custom_err_handler_)),
-                                                               tracer_(std::move(other.tracer_))
-
-{}
-
-SPDLOG_INLINE logger &logger::operator=(logger other) SPDLOG_NOEXCEPT
-{
-    this->swap(other);
-    return *this;
-}
-
-SPDLOG_INLINE void logger::swap(spdlog::logger &other) SPDLOG_NOEXCEPT
-{
-    name_.swap(other.name_);
-    sinks_.swap(other.sinks_);
-
-    // swap level_
-    auto other_level = other.level_.load();
-    auto my_level = level_.exchange(other_level);
-    other.level_.store(my_level);
-
-    // swap flush level_
-    other_level = other.flush_level_.load();
-    my_level = flush_level_.exchange(other_level);
-    other.flush_level_.store(my_level);
-
-    custom_err_handler_.swap(other.custom_err_handler_);
-    std::swap(tracer_, other.tracer_);
-}
-
-SPDLOG_INLINE void swap(logger &a, logger &b)
-{
-    a.swap(b);
-}
-
-SPDLOG_INLINE bool logger::should_log(level::level_enum msg_level) const
-{
-    return msg_level >= level_.load(std::memory_order_relaxed);
-}
-
-SPDLOG_INLINE void logger::set_level(level::level_enum log_level)
-{
-    level_.store(log_level);
-}
-
-SPDLOG_INLINE level::level_enum logger::level() const
-{
-    return static_cast<level::level_enum>(level_.load(std::memory_order_relaxed));
-}
-
-SPDLOG_INLINE const std::string &logger::name() const
-{
-    return name_;
-}
-
-// set formatting for the sinks in this logger.
-// each sink will get a seperate instance of the formatter object.
-SPDLOG_INLINE void logger::set_formatter(std::unique_ptr<formatter> f)
-{
-    for (auto it = sinks_.begin(); it != sinks_.end(); ++it)
-    {
-        if (std::next(it) == sinks_.end())
-        {
-            // last element - we can be move it.
-            (*it)->set_formatter(std::move(f));
-        }
-        else
-        {
-            (*it)->set_formatter(f->clone());
-        }
-    }
-}
-
-SPDLOG_INLINE void logger::set_pattern(std::string pattern, pattern_time_type time_type)
-{
-    auto new_formatter = details::make_unique<pattern_formatter>(std::move(pattern), time_type);
-    set_formatter(std::move(new_formatter));
-}
-
-// create new backtrace sink and move to it all our child sinks
-SPDLOG_INLINE void logger::enable_backtrace(size_t n_messages)
-{
-    tracer_.enable(n_messages);
-}
-
-// restore orig sinks and level and delete the backtrace sink
-SPDLOG_INLINE void logger::disable_backtrace()
-{
-    tracer_.disable();
-}
-
-SPDLOG_INLINE void logger::dump_backtrace()
-{
-    dump_backtrace_();
-}
-
-// flush functions
-SPDLOG_INLINE void logger::flush()
-{
-    flush_();
-}
-
-SPDLOG_INLINE void logger::flush_on(level::level_enum log_level)
-{
-    flush_level_.store(log_level);
-}
-
-SPDLOG_INLINE level::level_enum logger::flush_level() const
-{
-    return static_cast<level::level_enum>(flush_level_.load(std::memory_order_relaxed));
-}
-
-// sinks
-SPDLOG_INLINE const std::vector<sink_ptr> &logger::sinks() const
-{
-    return sinks_;
-}
-
-SPDLOG_INLINE std::vector<sink_ptr> &logger::sinks()
-{
-    return sinks_;
-}
-
-// error handler
-SPDLOG_INLINE void logger::set_error_handler(err_handler handler)
-{
-    custom_err_handler_ = handler;
-}
-
-// create new logger with same sinks and configuration.
-SPDLOG_INLINE std::shared_ptr<logger> logger::clone(std::string logger_name)
-{
-    auto cloned = std::make_shared<logger>(*this);
-    cloned->name_ = std::move(logger_name);
-    return cloned;
-}
-
-// protected methods
-SPDLOG_INLINE void logger::sink_it_(const details::log_msg &msg)
-{
-    for (auto &sink : sinks_)
-    {
-        if (sink->should_log(msg.level))
-        {
-            SPDLOG_TRY
-            {
-                sink->log(msg);
-            }
-            SPDLOG_LOGGER_CATCH()
-        }
-    }
-
-    if (should_flush_(msg))
-    {
-        flush_();
-    }
-}
-
-SPDLOG_INLINE void logger::flush_()
-{
-    for (auto &sink : sinks_)
-    {
-        SPDLOG_TRY
-        {
-            sink->flush();
-        }
-        SPDLOG_LOGGER_CATCH()
-    }
-}
-
-SPDLOG_INLINE void logger::dump_backtrace_()
-{
-    using details::log_msg;
-    if (tracer_)
-    {
-        sink_it_(log_msg{name(), level::info, "****************** Backtrace Start ******************"});
-        tracer_.foreach_pop([this](const log_msg &msg) { this->sink_it_(msg); });
-        sink_it_(log_msg{name(), level::info, "****************** Backtrace End ********************"});
-    }
-}
-
-SPDLOG_INLINE bool logger::should_flush_(const details::log_msg &msg)
-{
-    auto flush_level = flush_level_.load(std::memory_order_relaxed);
-    return (msg.level >= flush_level) && (msg.level != level::off);
-}
-
-SPDLOG_INLINE void logger::err_handler_(const std::string &msg)
-{
-    if (custom_err_handler_)
-    {
-        custom_err_handler_(msg);
-    }
-    else
-    {
-        using std::chrono::system_clock;
-        static std::mutex mutex;
-        static std::chrono::system_clock::time_point last_report_time;
-        static size_t err_counter = 0;
-        std::lock_guard<std::mutex> lk{mutex};
-        auto now = system_clock::now();
-        err_counter++;
-        if (now - last_report_time < std::chrono::seconds(1))
-        {
-            return;
-        }
-        last_report_time = now;
-        auto tm_time = details::os::localtime(system_clock::to_time_t(now));
-        char date_buf[64];
-        std::strftime(date_buf, sizeof(date_buf), "%Y-%m-%d %H:%M:%S", &tm_time);
-        fprintf(stderr, "[*** LOG ERROR #%04zu ***] [%s] [%s] {%s}\n", err_counter, date_buf, name().c_str(), msg.c_str());
-    }
-}
-} // namespace spdlog

include/spdlog/logger.h

@@ -3,380 +3,208 @@
 
 #pragma once
 
-// Thread safe logger (except for set_error_handler())
-// Has name, log level, vector of std::shared sink pointers and formatter
-// Upon each log write the logger:
-// 1. Checks if its log level is enough to log the message and if yes:
-// 2. Call the underlying sinks to do the job.
-// 3. Each sink use its own private copy of a formatter to format the message
-// and send to its destination.
-//
-// The use of private formatter per sink provides the opportunity to cache some
-// formatted data, and support for different format per sink.
-
-#include "spdlog/common.h"
-#include "spdlog/details/log_msg.h"
-#include "spdlog/details/backtracer.h"
-
-#ifdef SPDLOG_WCHAR_TO_UTF8_SUPPORT
-#include "spdlog/details/os.h"
-#endif
+// Thread-safe logger, with exceptions for these non-thread-safe methods:
+//   set_pattern()       - Modifies the log pattern.
+//   set_formatter()     - Sets a new formatter.
+//   set_error_handler() - Assigns a new error handler.
+//   sinks() (non-const) - Accesses and potentially modifies the sinks directly.
+// By default, the logger does not throw exceptions during logging.
+// To enable exception throwing for logging errors, set a custom error handler.
 
+#include <cassert>
+#include <iterator>
 #include <vector>
-#ifndef SPDLOG_NO_EXCEPTIONS
-#define SPDLOG_LOGGER_CATCH()                                                                                                              \
-    catch (const std::exception &ex)                                                                                                       \
-    {                                                                                                                                      \
-        err_handler_(ex.what());                                                                                                           \
-    }                                                                                                                                      \
-    catch (...)                                                                                                                            \
-    {                                                                                                                                      \
-        err_handler_("Unknown exception in logger");                                                                                       \
-    }
-#else
-#define SPDLOG_LOGGER_CATCH()
-#endif
+
+#include "common.h"
+#include "details/err_helper.h"
+#include "details/log_msg.h"
+#include "sinks/sink.h"
 
 namespace spdlog {
 
-class logger
-{
+class SPDLOG_API logger {
 public:
     // Empty logger
     explicit logger(std::string name)
-        : name_(std::move(name))
-        , sinks_()
-    {}
+        : name_(std::move(name)) {}
 
     // Logger with range on sinks
-    template<typename It>
+    template <typename It>
     logger(std::string name, It begin, It end)
-        : name_(std::move(name))
-        , sinks_(begin, end)
-    {}
+        : name_(std::move(name)),
+          sinks_(begin, end) {}
 
     // Logger with single sink
     logger(std::string name, sink_ptr single_sink)
-        : logger(std::move(name), {std::move(single_sink)})
-    {}
+        : logger(std::move(name), {std::move(single_sink)}) {}
 
     // Logger with sinks init list
     logger(std::string name, sinks_init_list sinks)
-        : logger(std::move(name), sinks.begin(), sinks.end())
-    {}
-
-    virtual ~logger() = default;
+        : logger(std::move(name), sinks.begin(), sinks.end()) {}
 
     logger(const logger &other);
-    logger(logger &&other) SPDLOG_NOEXCEPT;
-    logger &operator=(logger other) SPDLOG_NOEXCEPT;
+    logger(logger &&other) noexcept;
 
-    void swap(spdlog::logger &other) SPDLOG_NOEXCEPT;
+    ~logger() = default;
 
-    template<typename... Args>
-    void log(source_loc loc, level::level_enum lvl, string_view_t fmt, const Args &... args)
-    {
-        auto level_enabled = should_log(lvl);
-        if (!level_enabled && !tracer_)
-        {
-            return;
+    template <typename... Args>
+    void log(const source_loc &loc, level lvl, format_string_t<Args...> fmt, Args &&...args) noexcept {
+        if (should_log(lvl)) {
+            log_with_format_(loc, lvl, fmt, std::forward<Args>(args)...);
         }
-        SPDLOG_TRY
-        {
-            memory_buf_t buf;
-            fmt::format_to(buf, fmt, args...);
-            details::log_msg log_msg(loc, name_, lvl, string_view_t(buf.data(), buf.size()));
-            if (level_enabled)
-            {
-                sink_it_(log_msg);
-            }
-            if (tracer_)
-            {
-                tracer_.push_back(log_msg);
-            }
+    }
+
+    template <typename... Args>
+    void log(level lvl, format_string_t<Args...> fmt, Args &&...args) noexcept {
+        if (should_log(lvl)) {
+            log_with_format_(source_loc{}, lvl, fmt, std::forward<Args>(args)...);
         }
-        SPDLOG_LOGGER_CATCH()
     }
-
-    template<typename... Args>
-    void log(level::level_enum lvl, string_view_t fmt, const Args &... args)
-    {
-        log(source_loc{}, lvl, fmt, args...);
-    }
-
-    template<typename... Args>
-    void trace(string_view_t fmt, const Args &... args)
-    {
-        log(level::trace, fmt, args...);
-    }
-
-    template<typename... Args>
-    void debug(string_view_t fmt, const Args &... args)
-    {
-        log(level::debug, fmt, args...);
-    }
-
-    template<typename... Args>
-    void info(string_view_t fmt, const Args &... args)
-    {
-        log(level::info, fmt, args...);
-    }
-
-    template<typename... Args>
-    void warn(string_view_t fmt, const Args &... args)
-    {
-        log(level::warn, fmt, args...);
-    }
-
-    template<typename... Args>
-    void error(string_view_t fmt, const Args &... args)
-    {
-        log(level::err, fmt, args...);
-    }
-
-    template<typename... Args>
-    void critical(string_view_t fmt, const Args &... args)
-    {
-        log(level::critical, fmt, args...);
-    }
-
-    template<typename T>
-    void log(level::level_enum lvl, const T &msg)
-    {
-        log(source_loc{}, lvl, msg);
-    }
-
-    // T can be statically converted to string_view
-    template<class T, typename std::enable_if<std::is_convertible<const T &, spdlog::string_view_t>::value, T>::type * = nullptr>
-    void log(source_loc loc, level::level_enum lvl, const T &msg)
-    {
-        auto level_enabled = should_log(lvl);
-        if (!level_enabled && !tracer_)
-        {
-            return;
+    // log with no format string, just string message
+    void log(const source_loc &loc, level lvl, string_view_t msg) noexcept {
+        if (should_log(lvl)) {
+            sink_it_(details::log_msg(loc, name_, lvl, msg));
         }
-        SPDLOG_TRY
-        {
-            details::log_msg log_msg(loc, name_, lvl, msg);
-            if (level_enabled)
-            {
-                sink_it_(log_msg);
-            }
-            if (tracer_)
-            {
-                tracer_.push_back(log_msg);
-            }
+    }
+
+    void log(level lvl, string_view_t msg) noexcept {
+        if (should_log(lvl)) {
+            sink_it_(details::log_msg(source_loc{}, name_, lvl, msg));
         }
-        SPDLOG_LOGGER_CATCH()
     }
 
-    void log(level::level_enum lvl, string_view_t msg)
-    {
-        log(source_loc{}, lvl, msg);
-    }
-
-    // T cannot be statically converted to string_view or wstring_view
-    template<class T, typename std::enable_if<!std::is_convertible<const T &, spdlog::string_view_t>::value &&
-                                                  !is_convertible_to_wstring_view<const T &>::value,
-                          T>::type * = nullptr>
-    void log(source_loc loc, level::level_enum lvl, const T &msg)
-    {
-        log(loc, lvl, "{}", msg);
-    }
-
-    template<typename T>
-    void trace(const T &msg)
-    {
-        log(level::trace, msg);
-    }
-
-    template<typename T>
-    void debug(const T &msg)
-    {
-        log(level::debug, msg);
-    }
-
-    template<typename T>
-    void info(const T &msg)
-    {
-        log(level::info, msg);
-    }
-
-    template<typename T>
-    void warn(const T &msg)
-    {
-        log(level::warn, msg);
-    }
-
-    template<typename T>
-    void error(const T &msg)
-    {
-        log(level::err, msg);
-    }
-
-    template<typename T>
-    void critical(const T &msg)
-    {
-        log(level::critical, msg);
-    }
-
-#ifdef SPDLOG_WCHAR_TO_UTF8_SUPPORT
-#ifndef _WIN32
-#error SPDLOG_WCHAR_TO_UTF8_SUPPORT only supported on windows
-#else
-
-    template<typename... Args>
-    void log(source_loc loc, level::level_enum lvl, wstring_view_t fmt, const Args &... args)
-    {
-        auto level_enabled = should_log(lvl);
-        if (!level_enabled && !tracer_)
-        {
-            return;
+    // support for custom time
+    void log(log_clock::time_point log_time, const source_loc &loc, level lvl, string_view_t msg) noexcept {
+        if (should_log(lvl)) {
+            sink_it_(details::log_msg(log_time, loc, name_, lvl, msg));
         }
-        SPDLOG_TRY
-        {
-            // format to wmemory_buffer and convert to utf8
-            fmt::wmemory_buffer wbuf;
-            fmt::format_to(wbuf, fmt, args...);
-
-            memory_buf_t buf;
-            details::os::wstr_to_utf8buf(wstring_view_t(wbuf.data(), wbuf.size()), buf);
-            details::log_msg log_msg(loc, name_, lvl, string_view_t(buf.data(), buf.size()));
-
-            if (level_enabled)
-            {
-                sink_it_(log_msg);
-            }
-            if (tracer_)
-            {
-                tracer_.push_back(log_msg);
-            }
-        }
-        SPDLOG_LOGGER_CATCH()
     }
 
-    template<typename... Args>
-    void log(level::level_enum lvl, wstring_view_t fmt, const Args &... args)
-    {
-        log(source_loc{}, lvl, fmt, args...);
+    template <typename... Args>
+    void trace(format_string_t<Args...> fmt, Args &&...args) noexcept {
+        log(level::trace, fmt, std::forward<Args>(args)...);
     }
 
-    template<typename... Args>
-    void trace(wstring_view_t fmt, const Args &... args)
-    {
-        log(level::trace, fmt, args...);
+    template <typename... Args>
+    void debug(format_string_t<Args...> fmt, Args &&...args) noexcept {
+        log(level::debug, fmt, std::forward<Args>(args)...);
     }
 
-    template<typename... Args>
-    void debug(wstring_view_t fmt, const Args &... args)
-    {
-        log(level::debug, fmt, args...);
+    template <typename... Args>
+    void info(format_string_t<Args...> fmt, Args &&...args) noexcept {
+        log(level::info, fmt, std::forward<Args>(args)...);
     }
 
-    template<typename... Args>
-    void info(wstring_view_t fmt, const Args &... args)
-    {
-        log(level::info, fmt, args...);
+    template <typename... Args>
+    void warn(format_string_t<Args...> fmt, Args &&...args) noexcept {
+        log(level::warn, fmt, std::forward<Args>(args)...);
     }
 
-    template<typename... Args>
-    void warn(wstring_view_t fmt, const Args &... args)
-    {
-        log(level::warn, fmt, args...);
+    template <typename... Args>
+    void error(format_string_t<Args...> fmt, Args &&...args) noexcept {
+        log(level::err, fmt, std::forward<Args>(args)...);
     }
 
-    template<typename... Args>
-    void error(wstring_view_t fmt, const Args &... args)
-    {
-        log(level::err, fmt, args...);
+    template <typename... Args>
+    void critical(format_string_t<Args...> fmt, Args &&...args) noexcept {
+        log(level::critical, fmt, std::forward<Args>(args)...);
     }
 
-    template<typename... Args>
-    void critical(wstring_view_t fmt, const Args &... args)
-    {
-        log(level::critical, fmt, args...);
+    // log functions with no format string, just string
+    void trace(string_view_t msg) noexcept { log(level::trace, msg); }
+    void debug(string_view_t msg) noexcept { log(level::debug, msg); }
+    void info(string_view_t msg) noexcept { log(level::info, msg); }
+    void warn(string_view_t msg) noexcept { log(level::warn, msg); }
+    void error(string_view_t msg) noexcept { log(level::err, msg); }
+    void critical(string_view_t msg) noexcept { log(level::critical, msg); }
+
+    // return true if logging is enabled for the given level.
+    [[nodiscard]] bool should_log(level msg_level) const noexcept { return msg_level >= level_.load(std::memory_order_relaxed); }
+
+    // return true if the given message should be flushed
+    [[nodiscard]] bool should_flush(const details::log_msg &msg) const noexcept {
+        return (msg.log_level >= flush_level_.load(std::memory_order_relaxed)) && (msg.log_level != level::off);
     }
 
-    // T can be statically converted to wstring_view
-    template<class T, typename std::enable_if<is_convertible_to_wstring_view<const T &>::value, T>::type * = nullptr>
-    void log(source_loc loc, level::level_enum lvl, const T &msg)
-    {
-        if (!should_log(lvl))
-        {
-            return;
-        }
+    // set the level of logging
+    void set_level(level level);
 
-        try
-        {
-            memory_buf_t buf;
-            details::os::wstr_to_utf8buf(msg, buf);
+    // return the active log level
+    [[nodiscard]] level log_level() const noexcept;
 
-            details::log_msg log_msg(loc, name_, lvl, string_view_t(buf.data(), buf.size()));
-            sink_it_(log_msg);
-        }
-        SPDLOG_LOGGER_CATCH()
-    }
-#endif // _WIN32
-#endif // SPDLOG_WCHAR_TO_UTF8_SUPPORT
-
-    bool should_log(level::level_enum msg_level) const;
-
-    void set_level(level::level_enum log_level);
-
-    level::level_enum level() const;
-
-    const std::string &name() const;
+    // return the name of the logger
+    [[nodiscard]] const std::string &name() const noexcept;
 
     // set formatting for the sinks in this logger.
-    // each sink will get a seperate instance of the formatter object.
+    // each sink will get a separate instance of the formatter object.
     void set_formatter(std::unique_ptr<formatter> f);
 
+    // set formatting for the sinks in this logger.
+    // equivalent to
+    //     set_formatter(make_unique<pattern_formatter>(pattern, time_type))
+    // Note: each sink will get a new instance of a formatter object, replacing the old one.
     void set_pattern(std::string pattern, pattern_time_type time_type = pattern_time_type::local);
 
-    // backtrace support.
-    // efficiently store all debug/trace messages in a circular buffer until needed for debugging.
-    void enable_backtrace(size_t n_messages);
-    void disable_backtrace();
-    void dump_backtrace();
-
     // flush functions
-    void flush();
-    void flush_on(level::level_enum log_level);
-    level::level_enum flush_level() const;
+    void flush() noexcept;
+    void flush_on(level level) noexcept;
+    [[nodiscard]] level flush_level() const noexcept;
 
     // sinks
-    const std::vector<sink_ptr> &sinks() const;
+    [[nodiscard]] const std::vector<sink_ptr> &sinks() const noexcept;
+    [[nodiscard]] std::vector<sink_ptr> &sinks() noexcept;
 
-    std::vector<sink_ptr> &sinks();
-
-    // error handler
+    // error handler. default is err_handler that prints the error to stderr.
     void set_error_handler(err_handler);
 
     // create new logger with same sinks and configuration.
-    virtual std::shared_ptr<logger> clone(std::string logger_name);
+    std::shared_ptr<logger> clone(std::string logger_name);
 
-protected:
+private:
     std::string name_;
     std::vector<sink_ptr> sinks_;
-    spdlog::level_t level_{level::info};
-    spdlog::level_t flush_level_{level::off};
-    err_handler custom_err_handler_{nullptr};
-    details::backtracer tracer_;
+    atomic_level_t level_{level::info};
+    atomic_level_t flush_level_{level::off};
+    details::err_helper err_helper_;
 
-    virtual void sink_it_(const details::log_msg &msg);
-    virtual void flush_();
-    void dump_backtrace_();
-    bool should_flush_(const details::log_msg &msg);
+    // common implementation for after templated public api has been resolved to format string and
+    // args
+    template <typename... Args>
+    void log_with_format_(const source_loc &loc,
+                          const level lvl,
+                          const format_string_t<Args...> &format_string,
+                          Args &&...args) noexcept {
+        assert(should_log(lvl));
+        try {
+            memory_buf_t buf;
+            fmt::vformat_to(std::back_inserter(buf), format_string, fmt::make_format_args(args...));
+            sink_it_(details::log_msg(loc, name_, lvl, string_view_t(buf.data(), buf.size())));
+        } catch (const std::exception &ex) {
+            err_helper_.handle_ex(name_, loc, ex);
+        } catch (...) {
+            err_helper_.handle_unknown_ex(name_, loc);
+        }
+    }
 
-    // handle errors during logging.
-    // default handler prints the error to stderr at max rate of 1 message/sec.
-    void err_handler_(const std::string &msg);
+    // log the given message (if the given log level is high enough)
+    void sink_it_(const details::log_msg &msg) noexcept {
+        assert(should_log(msg.log_level));
+        for (auto &sink : sinks_) {
+            if (sink->should_log(msg.log_level)) {
+                try {
+                    sink->log(msg);
+                } catch (const std::exception &ex) {
+                    err_helper_.handle_ex(name_, msg.source, ex);
+                } catch (...) {
+                    err_helper_.handle_unknown_ex(name_, msg.source);
+                }
+            }
+        }
+        if (should_flush(msg)) {
+            flush_();
+        }
+    }
+    void flush_() noexcept;
 };
 
-void swap(logger &a, logger &b);
-
-} // namespace spdlog
-
-#ifdef SPDLOG_HEADER_ONLY
-#include "logger-inl.h"
-#endif
+}  // namespace spdlog

include/spdlog/pattern_formatter.h

@@ -0,0 +1,108 @@
+// Copyright(c) 2015-present, Gabi Melman & spdlog contributors.
+// Distributed under the MIT License (http://opensource.org/licenses/MIT)
+
+#pragma once
+
+#include <chrono>
+#include <ctime>
+#include <memory>
+#include <string>
+#include <unordered_map>
+#include <vector>
+
+#include "./common.h"
+#include "./details/log_msg.h"
+#include "./details/os.h"
+#include "./formatter.h"
+
+namespace spdlog {
+namespace details {
+
+// padding information.
+struct padding_info {
+    enum class pad_side { left, right, center };
+
+    padding_info() = default;
+    padding_info(size_t width, padding_info::pad_side side, bool truncate)
+        : width_(width),
+          side_(side),
+          truncate_(truncate),
+          enabled_(true) {}
+
+    bool enabled() const { return enabled_; }
+    size_t width_ = 0;
+    pad_side side_ = pad_side::left;
+    bool truncate_ = false;
+    bool enabled_ = false;
+};
+
+class SPDLOG_API flag_formatter {
+public:
+    explicit flag_formatter(padding_info padinfo)
+        : padinfo_(padinfo) {}
+    flag_formatter() = default;
+    virtual ~flag_formatter() = default;
+    virtual void format(const details::log_msg &msg, const std::tm &tm_time, memory_buf_t &dest) = 0;
+
+protected:
+    padding_info padinfo_;
+};
+
+}  // namespace details
+
+class SPDLOG_API custom_flag_formatter : public details::flag_formatter {
+public:
+    virtual std::unique_ptr<custom_flag_formatter> clone() const = 0;
+
+    void set_padding_info(const details::padding_info &padding) { flag_formatter::padinfo_ = padding; }
+};
+
+class SPDLOG_API pattern_formatter final : public formatter {
+public:
+    using custom_flags = std::unordered_map<char, std::unique_ptr<custom_flag_formatter>>;
+
+    explicit pattern_formatter(std::string pattern,
+                               pattern_time_type time_type = pattern_time_type::local,
+                               std::string eol = spdlog::details::os::default_eol,
+                               custom_flags custom_user_flags = custom_flags());
+
+    // use default pattern is not given
+    explicit pattern_formatter(pattern_time_type time_type = pattern_time_type::local,
+                               std::string eol = spdlog::details::os::default_eol);
+
+    pattern_formatter(const pattern_formatter &other) = delete;
+    pattern_formatter &operator=(const pattern_formatter &other) = delete;
+
+    std::unique_ptr<formatter> clone() const override;
+    void format(const details::log_msg &msg, memory_buf_t &dest) override;
+
+    template <typename T, typename... Args>
+    pattern_formatter &add_flag(char flag, Args &&...args) {
+        custom_handlers_[flag] = std::make_unique<T>(std::forward<Args>(args)...);
+        return *this;
+    }
+    void set_pattern(std::string pattern);
+    void need_localtime(bool need = true);
+
+private:
+    std::string pattern_;
+    std::string eol_;
+    pattern_time_type pattern_time_type_;
+    bool need_localtime_;
+    std::tm cached_tm_;
+    std::chrono::seconds last_log_secs_;
+    std::vector<std::unique_ptr<details::flag_formatter>> formatters_;
+    custom_flags custom_handlers_;
+
+    std::tm get_time_(const details::log_msg &msg) const;
+    template <typename Padder>
+    void handle_flag_(char flag, details::padding_info padding);
+
+    // Extract given pad spec (e.g. %8X)
+    // Advance the given it pass the end of the padding spec found (if any)
+    // Return padding.
+    static details::padding_info handle_padspec_(std::string::const_iterator &it, std::string::const_iterator end);
+
+    void compile_pattern_(const std::string &pattern);
+};
+}  // namespace spdlog

include/spdlog/sinks/android_sink.h

@@ -5,90 +5,104 @@
 
 #ifdef __ANDROID__
 
-#include "spdlog/details/fmt_helper.h"
-#include "spdlog/details/null_mutex.h"
-#include "spdlog/details/os.h"
-#include "spdlog/sinks/base_sink.h"
-#include "spdlog/details/synchronous_factory.h"
+    #include <android/log.h>
 
-#include <android/log.h>
-#include <chrono>
-#include <mutex>
-#include <string>
-#include <thread>
+    #include <chrono>
+    #include <mutex>
+    #include <string>
+    #include <thread>
+    #include <type_traits>
 
-#if !defined(SPDLOG_ANDROID_RETRIES)
-#define SPDLOG_ANDROID_RETRIES 2
-#endif
+    #include "../details/fmt_helper.h"
+    #include "../details/null_mutex.h"
+    #include "../details/os.h"
+    #include "./base_sink.h"
+
+    #if !defined(SPDLOG_ANDROID_RETRIES)
+        #define SPDLOG_ANDROID_RETRIES 2
+    #endif
 
 namespace spdlog {
 namespace sinks {
 
 /*
- * Android sink (logging using __android_log_write)
+ * Android sink
+ * (logging using __android_log_write or __android_log_buf_write depending on the specified
+ * BufferID)
  */
-template<typename Mutex>
-class android_sink final : public base_sink<Mutex>
-{
+template <typename Mutex, int BufferID = log_id::LOG_ID_MAIN>
+class android_sink final : public base_sink<Mutex> {
 public:
     explicit android_sink(std::string tag = "spdlog", bool use_raw_msg = false)
-        : tag_(std::move(tag))
-        , use_raw_msg_(use_raw_msg)
-    {}
+        : tag_(std::move(tag)),
+          use_raw_msg_(use_raw_msg) {}
 
 protected:
-    void sink_it_(const details::log_msg &msg) override
-    {
-        const android_LogPriority priority = convert_to_android_(msg.level);
+    void sink_it_(const details::log_msg &msg) override {
+        const android_LogPriority priority = convert_to_android_(msg.log_level);
         memory_buf_t formatted;
-        if (use_raw_msg_)
-        {
+        if (use_raw_msg_) {
             details::fmt_helper::append_string_view(msg.payload, formatted);
-        }
-        else
-        {
+        } else {
             base_sink<Mutex>::formatter_->format(msg, formatted);
         }
         formatted.push_back('\0');
         const char *msg_output = formatted.data();
 
         // See system/core/liblog/logger_write.c for explanation of return value
-        int ret = __android_log_write(priority, tag_.c_str(), msg_output);
+        int ret = android_log(priority, tag_.c_str(), msg_output);
+        if (ret == -EPERM) {
+            return;  // !__android_log_is_loggable
+        }
         int retry_count = 0;
-        while ((ret == -11 /*EAGAIN*/) && (retry_count < SPDLOG_ANDROID_RETRIES))
-        {
+        while ((ret == -11 /*EAGAIN*/) && (retry_count < SPDLOG_ANDROID_RETRIES)) {
             details::os::sleep_for_millis(5);
-            ret = __android_log_write(priority, tag_.c_str(), msg_output);
+            ret = android_log(priority, tag_.c_str(), msg_output);
             retry_count++;
         }
 
-        if (ret < 0)
-        {
-            SPDLOG_THROW(spdlog_ex("__android_log_write() failed", ret));
+        if (ret < 0) {
+            throw_spdlog_ex("logging to Android failed", ret);
         }
     }
 
     void flush_() override {}
 
 private:
-    static android_LogPriority convert_to_android_(spdlog::level::level_enum level)
-    {
-        switch (level)
-        {
-        case spdlog::level::trace:
-            return ANDROID_LOG_VERBOSE;
-        case spdlog::level::debug:
-            return ANDROID_LOG_DEBUG;
-        case spdlog::level::info:
-            return ANDROID_LOG_INFO;
-        case spdlog::level::warn:
-            return ANDROID_LOG_WARN;
-        case spdlog::level::err:
-            return ANDROID_LOG_ERROR;
-        case spdlog::level::critical:
-            return ANDROID_LOG_FATAL;
-        default:
-            return ANDROID_LOG_DEFAULT;
+    // There might be liblog versions used, that do not support __android_log_buf_write. So we only
+    // compile and link against
+    // __android_log_buf_write, if user explicitly provides a non-default log buffer. Otherwise,
+    // when using the default log buffer, always log via __android_log_write.
+    template <int ID = BufferID>
+    typename std::enable_if<ID == static_cast<int>(log_id::LOG_ID_MAIN), int>::type android_log(int prio,
+                                                                                                const char *tag,
+                                                                                                const char *text) {
+        return __android_log_write(prio, tag, text);
+    }
+
+    template <int ID = BufferID>
+    typename std::enable_if<ID != static_cast<int>(log_id::LOG_ID_MAIN), int>::type android_log(int prio,
+                                                                                                const char *tag,
+                                                                                                const char *text) {
+        return __android_log_buf_write(ID, prio, tag, text);
+    }
+
+    static android_LogPriority convert_to_android_(spdlog::level level) {
+        switch (level) {
+            case spdlog::level::trace:
+                return ANDROID_LOG_VERBOSE;
+            case spdlog::level::debug:
+                return ANDROID_LOG_DEBUG;
+            case spdlog::level::info:
+                return ANDROID_LOG_INFO;
+            case spdlog::level::warn:
+                return ANDROID_LOG_WARN;
+            case spdlog::level::err:
+                return ANDROID_LOG_ERROR;
+            case spdlog::level::critical:
+                return ANDROID_LOG_FATAL;
+            default:
+                return ANDROID_LOG_DEFAULT;
         }
     }
 
@@ -98,22 +112,13 @@ private:
 
 using android_sink_mt = android_sink<std::mutex>;
 using android_sink_st = android_sink<details::null_mutex>;
-} // namespace sinks
 
-// Create and register android syslog logger
+template <int BufferId = log_id::LOG_ID_MAIN>
+using android_sink_buf_mt = android_sink<std::mutex, BufferId>;
+template <int BufferId = log_id::LOG_ID_MAIN>
+using android_sink_buf_st = android_sink<details::null_mutex, BufferId>;
 
-template<typename Factory = spdlog::synchronous_factory>
-inline std::shared_ptr<logger> android_logger_mt(const std::string &logger_name, const std::string &tag = "spdlog")
-{
-    return Factory::template create<sinks::android_sink_mt>(logger_name, tag);
-}
+}  // namespace sinks
+}  // namespace spdlog
 
-template<typename Factory = spdlog::synchronous_factory>
-inline std::shared_ptr<logger> android_logger_st(const std::string &logger_name, const std::string &tag = "spdlog")
-{
-    return Factory::template create<sinks::android_sink_st>(logger_name, tag);
-}
-
-} // namespace spdlog
-
-#endif // __ANDROID__
+#endif  // __ANDROID__

include/spdlog/sinks/ansicolor_sink-inl.h

@@ -1,136 +0,0 @@
-// Copyright(c) 2015-present, Gabi Melman & spdlog contributors.
-// Distributed under the MIT License (http://opensource.org/licenses/MIT)
-
-#pragma once
-
-#ifndef SPDLOG_HEADER_ONLY
-#include "spdlog/sinks/ansicolor_sink.h"
-#endif
-
-#include "spdlog/details/pattern_formatter.h"
-#include "spdlog/details/os.h"
-
-namespace spdlog {
-namespace sinks {
-
-template<typename ConsoleMutex>
-SPDLOG_INLINE ansicolor_sink<ConsoleMutex>::ansicolor_sink(FILE *target_file, color_mode mode)
-    : target_file_(target_file)
-    , mutex_(ConsoleMutex::mutex())
-    , formatter_(details::make_unique<spdlog::pattern_formatter>())
-
-{
-    set_color_mode(mode);
-    colors_[level::trace] = white;
-    colors_[level::debug] = cyan;
-    colors_[level::info] = green;
-    colors_[level::warn] = yellow_bold;
-    colors_[level::err] = red_bold;
-    colors_[level::critical] = bold_on_red;
-    colors_[level::off] = reset;
-}
-
-template<typename ConsoleMutex>
-SPDLOG_INLINE void ansicolor_sink<ConsoleMutex>::set_color(level::level_enum color_level, string_view_t color)
-{
-    std::lock_guard<mutex_t> lock(mutex_);
-    colors_[color_level] = color;
-}
-
-template<typename ConsoleMutex>
-SPDLOG_INLINE void ansicolor_sink<ConsoleMutex>::log(const details::log_msg &msg)
-{
-    // Wrap the originally formatted message in color codes.
-    // If color is not supported in the terminal, log as is instead.
-    std::lock_guard<mutex_t> lock(mutex_);
-
-    memory_buf_t formatted;
-    formatter_->format(msg, formatted);
-    if (should_do_colors_ && msg.color_range_end > msg.color_range_start)
-    {
-        // before color range
-        print_range_(formatted, 0, msg.color_range_start);
-        // in color range
-        print_ccode_(colors_[msg.level]);
-        print_range_(formatted, msg.color_range_start, msg.color_range_end);
-        print_ccode_(reset);
-        // after color range
-        print_range_(formatted, msg.color_range_end, formatted.size());
-    }
-    else // no color
-    {
-        print_range_(formatted, 0, formatted.size());
-    }
-    fflush(target_file_);
-}
-
-template<typename ConsoleMutex>
-SPDLOG_INLINE void ansicolor_sink<ConsoleMutex>::flush()
-{
-    std::lock_guard<mutex_t> lock(mutex_);
-    fflush(target_file_);
-}
-
-template<typename ConsoleMutex>
-SPDLOG_INLINE void ansicolor_sink<ConsoleMutex>::set_pattern(const std::string &pattern)
-{
-    std::lock_guard<mutex_t> lock(mutex_);
-    formatter_ = std::unique_ptr<spdlog::formatter>(new pattern_formatter(pattern));
-}
-
-template<typename ConsoleMutex>
-SPDLOG_INLINE void ansicolor_sink<ConsoleMutex>::set_formatter(std::unique_ptr<spdlog::formatter> sink_formatter)
-{
-    std::lock_guard<mutex_t> lock(mutex_);
-    formatter_ = std::move(sink_formatter);
-}
-
-template<typename ConsoleMutex>
-SPDLOG_INLINE bool ansicolor_sink<ConsoleMutex>::should_color()
-{
-    return should_do_colors_;
-}
-
-template<typename ConsoleMutex>
-SPDLOG_INLINE void ansicolor_sink<ConsoleMutex>::set_color_mode(color_mode mode)
-{
-    switch (mode)
-    {
-    case color_mode::always:
-        should_do_colors_ = true;
-        return;
-    case color_mode::automatic:
-        should_do_colors_ = details::os::in_terminal(target_file_) && details::os::is_color_terminal();
-        return;
-    case color_mode::never:
-        should_do_colors_ = false;
-        return;
-    }
-}
-
-template<typename ConsoleMutex>
-SPDLOG_INLINE void ansicolor_sink<ConsoleMutex>::print_ccode_(const string_view_t &color_code)
-{
-    fwrite(color_code.data(), sizeof(string_view_t::char_type), color_code.size(), target_file_);
-}
-
-template<typename ConsoleMutex>
-SPDLOG_INLINE void ansicolor_sink<ConsoleMutex>::print_range_(const memory_buf_t &formatted, size_t start, size_t end)
-{
-    fwrite(formatted.data() + start, sizeof(char), end - start, target_file_);
-}
-
-// ansicolor_stdout_sink
-template<typename ConsoleMutex>
-SPDLOG_INLINE ansicolor_stdout_sink<ConsoleMutex>::ansicolor_stdout_sink(color_mode mode)
-    : ansicolor_sink<ConsoleMutex>(stdout, mode)
-{}
-
-// ansicolor_stderr_sink
-template<typename ConsoleMutex>
-SPDLOG_INLINE ansicolor_stderr_sink<ConsoleMutex>::ansicolor_stderr_sink(color_mode mode)
-    : ansicolor_sink<ConsoleMutex>(stderr, mode)
-{}
-
-} // namespace sinks
-} // namespace spdlog

include/spdlog/sinks/ansicolor_sink.h

@@ -3,13 +3,12 @@
 
 #pragma once
 
-#include "spdlog/details/console_globals.h"
-#include "spdlog/details/null_mutex.h"
-#include "spdlog/sinks/sink.h"
-#include <memory>
+#include <array>
 #include <mutex>
 #include <string>
-#include <unordered_map>
+
+#include "../details/null_mutex.h"
+#include "./base_sink.h"
 
 namespace spdlog {
 namespace sinks {
@@ -21,93 +20,84 @@ namespace sinks {
  * If no color terminal detected, omit the escape codes.
  */
 
-template<typename ConsoleMutex>
-class ansicolor_sink : public sink
-{
+template <typename Mutex>
+class ansicolor_sink : public base_sink<Mutex> {
 public:
-    using mutex_t = typename ConsoleMutex::mutex_t;
     ansicolor_sink(FILE *target_file, color_mode mode);
+    ansicolor_sink(const ansicolor_sink &other) = delete;
+    ansicolor_sink(ansicolor_sink &&other) = delete;
+    ansicolor_sink &operator=(const ansicolor_sink &other) = delete;
+    ansicolor_sink &operator=(ansicolor_sink &&other) = delete;
     ~ansicolor_sink() override = default;
 
-    ansicolor_sink(const ansicolor_sink &other) = delete;
-    ansicolor_sink &operator=(const ansicolor_sink &other) = delete;
-    void set_color(level::level_enum color_level, string_view_t color);
+    void set_color(level color_level, string_view_t color);
     void set_color_mode(color_mode mode);
-    bool should_color();
-
-    void log(const details::log_msg &msg) override;
-    void flush() override;
-    void set_pattern(const std::string &pattern) final;
-    void set_formatter(std::unique_ptr<spdlog::formatter> sink_formatter) override;
+    bool should_color() const;
 
     // Formatting codes
-    const string_view_t reset = "\033[m";
-    const string_view_t bold = "\033[1m";
-    const string_view_t dark = "\033[2m";
-    const string_view_t underline = "\033[4m";
-    const string_view_t blink = "\033[5m";
-    const string_view_t reverse = "\033[7m";
-    const string_view_t concealed = "\033[8m";
-    const string_view_t clear_line = "\033[K";
+    static constexpr std::string_view reset = "\033[m";
+    static constexpr std::string_view bold = "\033[1m";
+    static constexpr std::string_view dark = "\033[2m";
+    static constexpr std::string_view underline = "\033[4m";
+    static constexpr std::string_view blink = "\033[5m";
+    static constexpr std::string_view reverse = "\033[7m";
+    static constexpr std::string_view concealed = "\033[8m";
+    static constexpr std::string_view clear_line = "\033[K";
 
     // Foreground colors
-    const string_view_t black = "\033[30m";
-    const string_view_t red = "\033[31m";
-    const string_view_t green = "\033[32m";
-    const string_view_t yellow = "\033[33m";
-    const string_view_t blue = "\033[34m";
-    const string_view_t magenta = "\033[35m";
-    const string_view_t cyan = "\033[36m";
-    const string_view_t white = "\033[37m";
+    static constexpr std::string_view black = "\033[30m";
+    static constexpr std::string_view red = "\033[31m";
+    static constexpr std::string_view green = "\033[32m";
+    static constexpr std::string_view yellow = "\033[33m";
+    static constexpr std::string_view blue = "\033[34m";
+    static constexpr std::string_view magenta = "\033[35m";
+    static constexpr std::string_view cyan = "\033[36m";
+    static constexpr std::string_view white = "\033[37m";
 
-    /// Background colors
-    const string_view_t on_black = "\033[40m";
-    const string_view_t on_red = "\033[41m";
-    const string_view_t on_green = "\033[42m";
-    const string_view_t on_yellow = "\033[43m";
-    const string_view_t on_blue = "\033[44m";
-    const string_view_t on_magenta = "\033[45m";
-    const string_view_t on_cyan = "\033[46m";
-    const string_view_t on_white = "\033[47m";
+    // Background colors
+    static constexpr std::string_view on_black = "\033[40m";
+    static constexpr std::string_view on_red = "\033[41m";
+    static constexpr std::string_view on_green = "\033[42m";
+    static constexpr std::string_view on_yellow = "\033[43m";
+    static constexpr std::string_view on_blue = "\033[44m";
+    static constexpr std::string_view on_magenta = "\033[45m";
+    static constexpr std::string_view on_cyan = "\033[46m";
+    static constexpr std::string_view on_white = "\033[47m";
 
-    /// Bold colors
-    const string_view_t yellow_bold = "\033[33m\033[1m";
-    const string_view_t red_bold = "\033[31m\033[1m";
-    const string_view_t bold_on_red = "\033[1m\033[41m";
+    // Bold colors
+    static constexpr std::string_view yellow_bold = "\033[33m\033[1m";
+    static constexpr std::string_view red_bold = "\033[31m\033[1m";
+    static constexpr std::string_view bold_on_red = "\033[1m\033[41m";
 
 private:
     FILE *target_file_;
-    mutex_t &mutex_;
     bool should_do_colors_;
-    std::unique_ptr<spdlog::formatter> formatter_;
-    std::unordered_map<level::level_enum, string_view_t, level::level_hasher> colors_;
-    void print_ccode_(const string_view_t &color_code);
-    void print_range_(const memory_buf_t &formatted, size_t start, size_t end);
+    std::array<std::string, levels_count> colors_;
+
+    void sink_it_(const details::log_msg &msg) override;
+    void flush_() override;
+    void set_color_mode_(color_mode mode);
+    void print_ccode_(string_view_t color_code) const;
+    void print_range_(const memory_buf_t &formatted, size_t start, size_t end) const;
+    static std::string to_string_(string_view_t sv);
 };
 
-template<typename ConsoleMutex>
-class ansicolor_stdout_sink : public ansicolor_sink<ConsoleMutex>
-{
+template <typename Mutex>
+class ansicolor_stdout_sink final : public ansicolor_sink<Mutex> {
 public:
     explicit ansicolor_stdout_sink(color_mode mode = color_mode::automatic);
 };
 
-template<typename ConsoleMutex>
-class ansicolor_stderr_sink : public ansicolor_sink<ConsoleMutex>
-{
+template <typename Mutex>
+class ansicolor_stderr_sink final : public ansicolor_sink<Mutex> {
 public:
     explicit ansicolor_stderr_sink(color_mode mode = color_mode::automatic);
 };
 
-using ansicolor_stdout_sink_mt = ansicolor_stdout_sink<details::console_mutex>;
-using ansicolor_stdout_sink_st = ansicolor_stdout_sink<details::console_nullmutex>;
+using ansicolor_stdout_sink_mt = ansicolor_stdout_sink<std::mutex>;
+using ansicolor_stdout_sink_st = ansicolor_stdout_sink<details::null_mutex>;
+using ansicolor_stderr_sink_mt = ansicolor_stderr_sink<std::mutex>;
+using ansicolor_stderr_sink_st = ansicolor_stderr_sink<details::null_mutex>;
 
-using ansicolor_stderr_sink_mt = ansicolor_stderr_sink<details::console_mutex>;
-using ansicolor_stderr_sink_st = ansicolor_stderr_sink<details::console_nullmutex>;
-
-} // namespace sinks
-} // namespace spdlog
-
-#ifdef SPDLOG_HEADER_ONLY
-#include "ansicolor_sink-inl.h"
-#endif
+}  // namespace sinks
+}  // namespace spdlog

include/spdlog/sinks/async_sink.h

@@ -0,0 +1,111 @@
+#pragma once
+
+#include <atomic>
+#include <cstdint>
+#include <functional>
+#include <memory>
+#include <thread>
+#include <vector>
+
+#include "../details/async_log_msg.h"
+#include "../details/err_helper.h"
+#include "sink.h"
+
+// async_sink is a sink that sends log messages to a dist_sink in a separate thread using a queue.
+// The worker thread dequeues the messages and sends them to the dist_sink to perform the actual logging.
+// Once the sink is destroyed, the worker thread empties the queue and exits.
+
+namespace spdlog::details {  // forward declaration
+template <typename T>
+class mpmc_blocking_queue;
+}
+
+namespace spdlog {
+namespace sinks {
+
+class SPDLOG_API async_sink final : public sink {
+public:
+    enum class overflow_policy : std::uint8_t {
+        block,           // Block until the log message can be enqueued (default).
+        overrun_oldest,  // Overrun the oldest message in the queue if full.
+        discard_new      // Discard the log message if the queue is full
+    };
+
+    static constexpr size_t default_queue_size = 8192;
+    static constexpr size_t max_queue_size = 250'000;
+
+    struct config {
+        size_t queue_size = default_queue_size;
+        overflow_policy policy = overflow_policy::block;
+        std::vector<std::shared_ptr<sink>> sinks;
+        std::function<void()> on_thread_start = nullptr;
+        std::function<void()> on_thread_stop = nullptr;
+        err_handler custom_err_handler = nullptr;
+    };
+
+    explicit async_sink(config async_config);
+    async_sink(const async_sink &) = delete;
+    async_sink &operator=(const async_sink &) = delete;
+    async_sink(async_sink &&) = delete;
+    async_sink &operator=(async_sink &&) = delete;
+    ~async_sink() override;
+
+    // sink interface implementation
+    void log(const details::log_msg &msg) override;
+    void set_pattern(const std::string &pattern) override;
+    void set_formatter(std::unique_ptr<formatter> sink_formatter) override;
+    // enqueue flush request to the worker thread and return immediately(default)
+    // if you need to wait for the actual flush to finish, call wait_all() after flush() or destruct the sink
+    void flush() override;
+
+    // non sink interface methods
+
+    // wait until all logs were processed up to timeout millis and return false if timeout was reached
+    [[nodiscard]] bool wait_all(std::chrono::milliseconds timeout) const;
+
+    // wait until all logs were processed
+    void wait_all() const;
+
+    // return the number of overrun messages (effective only if policy is overrun_oldest)
+    [[nodiscard]] size_t get_overrun_counter() const;
+
+    // reset the overrun counter
+    void reset_overrun_counter() const;
+
+    // return the number of discarded messages (effective only if policy is discard_new)
+    [[nodiscard]] size_t get_discard_counter() const;
+
+    // reset the discard counter
+    void reset_discard_counter() const;
+
+    // return the current async_sink configuration
+    [[nodiscard]] const config &get_config() const;
+
+    // create an async_sink with one backend sink constructed with the given args.
+    // example:
+    // auto async_file = async_sink::with<spdlog::sinks::basic_file_sink_st>("mylog.txt");
+    template <typename Sink, typename... SinkArgs>
+    static std::shared_ptr<async_sink> with(SinkArgs &&...sink_args) {
+        config cfg{};
+        cfg.sinks.emplace_back(std::make_shared<Sink>(std::forward<SinkArgs>(sink_args)...));
+        return std::make_shared<async_sink>(cfg);
+    }
+
+private:
+    using async_log_msg = details::async_log_msg;
+    using queue_t = details::mpmc_blocking_queue<async_log_msg>;
+
+    void enqueue_message_(details::async_log_msg &&msg) const;
+    void backend_loop_();
+    void backend_log_(const details::log_msg &msg);
+    void backend_flush_();
+
+    config config_;
+    std::unique_ptr<queue_t> q_;
+    std::thread worker_thread_;
+    details::err_helper err_helper_;
+    std::atomic_bool terminate_worker_ = false;
+};
+
+}  // namespace sinks
+}  // namespace spdlog

include/spdlog/sinks/base_sink-inl.h

@@ -1,63 +0,0 @@
-// Copyright(c) 2015-present, Gabi Melman & spdlog contributors.
-// Distributed under the MIT License (http://opensource.org/licenses/MIT)
-
-#pragma once
-
-#ifndef SPDLOG_HEADER_ONLY
-#include "spdlog/sinks/base_sink.h"
-#endif
-
-#include "spdlog/common.h"
-#include "spdlog/details/pattern_formatter.h"
-
-#include <memory>
-
-template<typename Mutex>
-SPDLOG_INLINE spdlog::sinks::base_sink<Mutex>::base_sink()
-    : formatter_{details::make_unique<spdlog::pattern_formatter>()}
-{}
-
-template<typename Mutex>
-SPDLOG_INLINE spdlog::sinks::base_sink<Mutex>::base_sink(std::unique_ptr<spdlog::formatter> formatter)
-    : formatter_{std::move(formatter)}
-{}
-
-template<typename Mutex>
-void SPDLOG_INLINE spdlog::sinks::base_sink<Mutex>::log(const details::log_msg &msg)
-{
-    std::lock_guard<Mutex> lock(mutex_);
-    sink_it_(msg);
-}
-
-template<typename Mutex>
-void SPDLOG_INLINE spdlog::sinks::base_sink<Mutex>::flush()
-{
-    std::lock_guard<Mutex> lock(mutex_);
-    flush_();
-}
-
-template<typename Mutex>
-void SPDLOG_INLINE spdlog::sinks::base_sink<Mutex>::set_pattern(const std::string &pattern)
-{
-    std::lock_guard<Mutex> lock(mutex_);
-    set_pattern_(pattern);
-}
-
-template<typename Mutex>
-void SPDLOG_INLINE spdlog::sinks::base_sink<Mutex>::set_formatter(std::unique_ptr<spdlog::formatter> sink_formatter)
-{
-    std::lock_guard<Mutex> lock(mutex_);
-    set_formatter_(std::move(sink_formatter));
-}
-
-template<typename Mutex>
-void SPDLOG_INLINE spdlog::sinks::base_sink<Mutex>::set_pattern_(const std::string &pattern)
-{
-    set_formatter_(details::make_unique<spdlog::pattern_formatter>(pattern));
-}
-
-template<typename Mutex>
-void SPDLOG_INLINE spdlog::sinks::base_sink<Mutex>::set_formatter_(std::unique_ptr<spdlog::formatter> sink_formatter)
-{
-    formatter_ = std::move(sink_formatter);
-}

include/spdlog/sinks/base_sink.h

@@ -6,41 +6,43 @@
 // base sink templated over a mutex (either dummy or real)
 // concrete implementation should override the sink_it_() and flush_()  methods.
 // locking is taken care of in this class - no locking needed by the
-// implementers..
+// implementers
 //
 
-#include "spdlog/common.h"
-#include "spdlog/details/log_msg.h"
-#include "spdlog/sinks/sink.h"
+#include "../common.h"
+#include "../details/log_msg.h"
+#include "./sink.h"
 
 namespace spdlog {
 namespace sinks {
-template<typename Mutex>
-class base_sink : public sink
-{
+template <typename Mutex>
+class SPDLOG_API base_sink : public sink {
 public:
     base_sink();
     explicit base_sink(std::unique_ptr<spdlog::formatter> formatter);
+    ~base_sink() override = default;
+
     base_sink(const base_sink &) = delete;
+    base_sink(base_sink &&) = delete;
+
     base_sink &operator=(const base_sink &) = delete;
-    void log(const details::log_msg &msg) final;
-    void flush() final;
-    void set_pattern(const std::string &pattern) final;
-    void set_formatter(std::unique_ptr<spdlog::formatter> sink_formatter) final;
+    base_sink &operator=(base_sink &&) = delete;
+
+    void log(const details::log_msg &msg) final override;
+    void flush() final override;
+    void set_pattern(const std::string &pattern) final override;
+    void set_formatter(std::unique_ptr<spdlog::formatter> sink_formatter) final override;
 
 protected:
     // sink formatter
     std::unique_ptr<spdlog::formatter> formatter_;
-    Mutex mutex_;
+    mutable Mutex mutex_;
 
     virtual void sink_it_(const details::log_msg &msg) = 0;
     virtual void flush_() = 0;
     virtual void set_pattern_(const std::string &pattern);
     virtual void set_formatter_(std::unique_ptr<spdlog::formatter> sink_formatter);
 };
-} // namespace sinks
-} // namespace spdlog
 
-#ifdef SPDLOG_HEADER_ONLY
-#include "base_sink-inl.h"
-#endif
+}  // namespace sinks
+}  // namespace spdlog

include/spdlog/sinks/basic_file_sink-inl.h

@@ -1,43 +0,0 @@
-// Copyright(c) 2015-present, Gabi Melman & spdlog contributors.
-// Distributed under the MIT License (http://opensource.org/licenses/MIT)
-
-#pragma once
-
-#ifndef SPDLOG_HEADER_ONLY
-#include "spdlog/sinks/basic_file_sink.h"
-#endif
-
-#include "spdlog/common.h"
-#include "spdlog/details/os.h"
-
-namespace spdlog {
-namespace sinks {
-
-template<typename Mutex>
-SPDLOG_INLINE basic_file_sink<Mutex>::basic_file_sink(const filename_t &filename, bool truncate)
-{
-    file_helper_.open(filename, truncate);
-}
-
-template<typename Mutex>
-SPDLOG_INLINE const filename_t &basic_file_sink<Mutex>::filename() const
-{
-    return file_helper_.filename();
-}
-
-template<typename Mutex>
-SPDLOG_INLINE void basic_file_sink<Mutex>::sink_it_(const details::log_msg &msg)
-{
-    memory_buf_t formatted;
-    base_sink<Mutex>::formatter_->format(msg, formatted);
-    file_helper_.write(formatted);
-}
-
-template<typename Mutex>
-SPDLOG_INLINE void basic_file_sink<Mutex>::flush_()
-{
-    file_helper_.flush();
-}
-
-} // namespace sinks
-} // namespace spdlog

include/spdlog/sinks/basic_file_sink.h

@@ -3,24 +3,22 @@
 
 #pragma once
 
-#include "spdlog/details/file_helper.h"
-#include "spdlog/details/null_mutex.h"
-#include "spdlog/sinks/base_sink.h"
-#include "spdlog/details/synchronous_factory.h"
-
 #include <mutex>
 #include <string>
 
+#include "../details/file_helper.h"
+#include "../details/null_mutex.h"
+#include "./base_sink.h"
+
 namespace spdlog {
 namespace sinks {
 /*
  * Trivial file sink with single file as target
  */
-template<typename Mutex>
-class basic_file_sink final : public base_sink<Mutex>
-{
+template <typename Mutex>
+class basic_file_sink final : public base_sink<Mutex> {
 public:
-    explicit basic_file_sink(const filename_t &filename, bool truncate = false);
+    explicit basic_file_sink(const filename_t &filename, bool truncate = false, const file_event_handlers &event_handlers = {});
     const filename_t &filename() const;
 
 protected:
@@ -34,25 +32,5 @@ private:
 using basic_file_sink_mt = basic_file_sink<std::mutex>;
 using basic_file_sink_st = basic_file_sink<details::null_mutex>;
 
-} // namespace sinks
-
-//
-// factory functions
-//
-template<typename Factory = spdlog::synchronous_factory>
-inline std::shared_ptr<logger> basic_logger_mt(const std::string &logger_name, const filename_t &filename, bool truncate = false)
-{
-    return Factory::template create<sinks::basic_file_sink_mt>(logger_name, filename, truncate);
-}
-
-template<typename Factory = spdlog::synchronous_factory>
-inline std::shared_ptr<logger> basic_logger_st(const std::string &logger_name, const filename_t &filename, bool truncate = false)
-{
-    return Factory::template create<sinks::basic_file_sink_st>(logger_name, filename, truncate);
-}
-
-} // namespace spdlog
-
-#ifdef SPDLOG_HEADER_ONLY
-#include "basic_file_sink-inl.h"
-#endif
+}  // namespace sinks
+}  // namespace spdlog

include/spdlog/sinks/callback_sink.h

@@ -0,0 +1,39 @@
+// Copyright(c) 2015-present, Gabi Melman & spdlog contributors.
+// Distributed under the MIT License (http://opensource.org/licenses/MIT)
+
+#pragma once
+
+#include <mutex>
+#include <string>
+
+#include "../details/null_mutex.h"
+#include "./base_sink.h"
+
+namespace spdlog {
+
+// callbacks type
+typedef std::function<void(const details::log_msg &msg)> custom_log_callback;
+
+namespace sinks {
+/*
+ * Trivial callback sink, gets a callback function and calls it on each log
+ */
+template <typename Mutex>
+class callback_sink final : public base_sink<Mutex> {
+public:
+    explicit callback_sink(const custom_log_callback &callback)
+        : callback_{callback} {}
+
+protected:
+    void sink_it_(const details::log_msg &msg) override { callback_(msg); }
+    void flush_() override {}
+
+private:
+    custom_log_callback callback_;
+};
+
+using callback_sink_mt = callback_sink<std::mutex>;
+using callback_sink_st = callback_sink<details::null_mutex>;
+
+}  // namespace sinks
+}  // namespace spdlog

include/spdlog/sinks/daily_file_sink.h

@@ -3,35 +3,51 @@
 
 #pragma once
 
-#include "spdlog/common.h"
-#include "spdlog/details/file_helper.h"
-#include "spdlog/details/null_mutex.h"
-#include "spdlog/fmt/fmt.h"
-#include "spdlog/sinks/base_sink.h"
-#include "spdlog/details/os.h"
-#include "spdlog/details/synchronous_factory.h"
-
 #include <chrono>
 #include <cstdio>
-#include <ctime>
+#include <iomanip>
 #include <mutex>
+#include <sstream>
 #include <string>
 
+#include "../common.h"
+#include "../details/circular_q.h"
+#include "../details/file_helper.h"
+#include "../details/null_mutex.h"
+#include "../details/os.h"
+#include "./base_sink.h"
+
 namespace spdlog {
 namespace sinks {
 
 /*
- * Generator of daily log file names in format basename.YYYY-MM-DD.ext
+ * Generator of daily log file names in format basename_YYYY-MM-DD.ext
  */
-struct daily_filename_calculator
-{
-    // Create filename for the form basename.YYYY-MM-DD
-    static filename_t calc_filename(const filename_t &filename, const tm &now_tm)
-    {
+struct daily_filename_calculator {
+    static filename_t calc_filename(const filename_t &filename, const tm &now_tm) {
         filename_t basename, ext;
-        std::tie(basename, ext) = details::file_helper::split_by_extension(filename);
-        return fmt::format(
-            SPDLOG_FILENAME_T("{}_{:04d}-{:02d}-{:02d}{}"), basename, now_tm.tm_year + 1900, now_tm.tm_mon + 1, now_tm.tm_mday, ext);
+        std::tie(basename, ext) = details::os::split_by_extension(filename);
+        std::basic_ostringstream<filename_t::value_type> oss;
+        oss << basename.native() << '_' << std::setfill(SPDLOG_FILENAME_T('0')) << std::setw(4) << now_tm.tm_year + 1900 << '-'
+            << std::setw(2) << now_tm.tm_mon + 1 << '-' << std::setw(2) << now_tm.tm_mday << ext.native();
+        return oss.str();
+    }
+};
+
+/*
+ * Generator of daily log file names with strftime format.
+ * Usages:
+ *
+ * std::make_shared<spdlog::sinks::daily_file_format_sink_mt>("myapp-%Y-%m-%d:%H:%M:%S.log", hour,  minute);
+ * or
+ * spdlog::daily_logger_format_mt("loggername, "myapp-%Y-%m-%d:%X.log", hour,  minute)"
+ *
+ */
+struct daily_filename_format_calculator {
+    static filename_t calc_filename(const filename_t &file_path, const tm &now_tm) {
+        std::basic_ostringstream<filename_t::value_type> stream;
+        stream << std::put_time(&now_tm, file_path.c_str());
+        return stream.str();
     }
 };
 
@@ -39,23 +55,29 @@ struct daily_filename_calculator
  * Rotating file sink based on date.
  * If truncate != false , the created file will be truncated.
  * If max_files > 0, retain only the last max_files and delete previous.
+ * If max_files > 0, retain only the last max_files and delete previous.
+ * Note that old log files from previous executions will not be deleted by this class,
+ * rotation and deletion is only applied while the program is running.
  */
-template<typename Mutex, typename FileNameCalc = daily_filename_calculator>
-class daily_file_sink final : public base_sink<Mutex>
-{
+template <typename Mutex, typename FileNameCalc = daily_filename_calculator>
+class daily_file_sink final : public base_sink<Mutex> {
 public:
     // create daily file sink which rotates on given time
-    daily_file_sink(filename_t base_filename, int rotation_hour, int rotation_minute, bool truncate = false, uint16_t max_files = 0)
-        : base_filename_(std::move(base_filename))
-        , rotation_h_(rotation_hour)
-        , rotation_m_(rotation_minute)
-        , truncate_(truncate)
-        , max_files_(max_files)
-        , filenames_q_()
-    {
-        if (rotation_hour < 0 || rotation_hour > 23 || rotation_minute < 0 || rotation_minute > 59)
-        {
-            SPDLOG_THROW(spdlog_ex("daily_file_sink: Invalid rotation time in ctor"));
+    daily_file_sink(filename_t base_filename,
+                    int rotation_hour,
+                    int rotation_minute,
+                    bool truncate = false,
+                    uint16_t max_files = 0,
+                    const file_event_handlers &event_handlers = {})
+        : base_filename_(std::move(base_filename)),
+          rotation_h_(rotation_hour),
+          rotation_m_(rotation_minute),
+          file_helper_{event_handlers},
+          truncate_(truncate),
+          max_files_(max_files),
+          filenames_q_() {
+        if (rotation_hour < 0 || rotation_hour > 23 || rotation_minute < 0 || rotation_minute > 59) {
+            throw_spdlog_ex("daily_file_sink: Invalid rotation time in ctor");
         }
 
         auto now = log_clock::now();
@@ -63,30 +85,21 @@ public:
         file_helper_.open(filename, truncate_);
         rotation_tp_ = next_rotation_tp_();
 
-        if (max_files_ > 0)
-        {
-            filenames_q_ = details::circular_q<filename_t>(static_cast<size_t>(max_files_));
-            filenames_q_.push_back(std::move(filename));
+        if (max_files_ > 0) {
+            init_filenames_q_();
         }
     }
 
-    const filename_t &filename() const
-    {
+    filename_t filename() {
+        std::lock_guard<Mutex> lock(base_sink<Mutex>::mutex_);
         return file_helper_.filename();
     }
 
 protected:
-    void sink_it_(const details::log_msg &msg) override
-    {
-#ifdef SPDLOG_NO_DATETIME
-        auto time = log_clock::now();
-#else
+    void sink_it_(const details::log_msg &msg) override {
         auto time = msg.time;
-#endif
-
         bool should_rotate = time >= rotation_tp_;
-        if (should_rotate)
-        {
+        if (should_rotate) {
             auto filename = FileNameCalc::calc_filename(base_filename_, now_tm(time));
             file_helper_.open(filename, truncate_);
             rotation_tp_ = next_rotation_tp_();
@@ -95,35 +108,47 @@ protected:
         base_sink<Mutex>::formatter_->format(msg, formatted);
         file_helper_.write(formatted);
 
-        // Do the cleaning ony at the end because it might throw on failure.
-        if (should_rotate && max_files_ > 0)
-        {
+        // Do the cleaning only at the end because it might throw on failure.
+        if (should_rotate && max_files_ > 0) {
             delete_old_();
         }
     }
 
-    void flush_() override
-    {
-        file_helper_.flush();
-    }
+    void flush_() override { file_helper_.flush(); }
 
 private:
-    tm now_tm(log_clock::time_point tp)
-    {
+    void init_filenames_q_() {
+        using details::os::path_exists;
+
+        filenames_q_ = details::circular_q<filename_t>(static_cast<size_t>(max_files_));
+        std::vector<filename_t> filenames;
+        auto now = log_clock::now();
+        while (filenames.size() < max_files_) {
+            auto filename = FileNameCalc::calc_filename(base_filename_, now_tm(now));
+            if (!path_exists(filename)) {
+                break;
+            }
+            filenames.emplace_back(filename);
+            now -= std::chrono::hours(24);
+        }
+        for (auto iter = filenames.rbegin(); iter != filenames.rend(); ++iter) {
+            filenames_q_.push_back(std::move(*iter));
+        }
+    }
+
+    tm now_tm(log_clock::time_point tp) {
         time_t tnow = log_clock::to_time_t(tp);
         return spdlog::details::os::localtime(tnow);
     }
 
-    log_clock::time_point next_rotation_tp_()
-    {
+    log_clock::time_point next_rotation_tp_() {
         auto now = log_clock::now();
         tm date = now_tm(now);
         date.tm_hour = rotation_h_;
         date.tm_min = rotation_m_;
         date.tm_sec = 0;
         auto rotation_time = log_clock::from_time_t(std::mktime(&date));
-        if (rotation_time > now)
-        {
+        if (rotation_time > now) {
             return rotation_time;
         }
         return {rotation_time + std::chrono::hours(24)};
@@ -131,21 +156,18 @@ private:
 
     // Delete the file N rotations ago.
     // Throw spdlog_ex on failure to delete the old file.
-    void delete_old_()
-    {
+    void delete_old_() {
         using details::os::filename_to_str;
         using details::os::remove_if_exists;
 
-        filename_t current_file = filename();
-        if (filenames_q_.full())
-        {
+        filename_t current_file = file_helper_.filename();
+        if (filenames_q_.full()) {
             auto old_filename = std::move(filenames_q_.front());
             filenames_q_.pop_front();
-            bool ok = remove_if_exists(old_filename) == 0;
-            if (!ok)
-            {
+            bool ok = remove_if_exists(old_filename);
+            if (!ok) {
                 filenames_q_.push_back(std::move(current_file));
-                SPDLOG_THROW(spdlog_ex("Failed removing daily file " + filename_to_str(old_filename), errno));
+                throw_spdlog_ex("Failed removing daily file " + filename_to_str(old_filename), errno);
             }
         }
         filenames_q_.push_back(std::move(current_file));
@@ -163,23 +185,8 @@ private:
 
 using daily_file_sink_mt = daily_file_sink<std::mutex>;
 using daily_file_sink_st = daily_file_sink<details::null_mutex>;
+using daily_file_format_sink_mt = daily_file_sink<std::mutex, daily_filename_format_calculator>;
+using daily_file_format_sink_st = daily_file_sink<details::null_mutex, daily_filename_format_calculator>;
 
-} // namespace sinks
-
-//
-// factory functions
-//
-template<typename Factory = spdlog::synchronous_factory>
-inline std::shared_ptr<logger> daily_logger_mt(
-    const std::string &logger_name, const filename_t &filename, int hour = 0, int minute = 0, bool truncate = false)
-{
-    return Factory::template create<sinks::daily_file_sink_mt>(logger_name, filename, hour, minute, truncate);
-}
-
-template<typename Factory = spdlog::synchronous_factory>
-inline std::shared_ptr<logger> daily_logger_st(
-    const std::string &logger_name, const filename_t &filename, int hour = 0, int minute = 0, bool truncate = false)
-{
-    return Factory::template create<sinks::daily_file_sink_st>(logger_name, filename, hour, minute, truncate);
-}
-} // namespace spdlog
+}  // namespace sinks
+}  // namespace spdlog

include/spdlog/sinks/dist_sink.h

@@ -3,84 +3,72 @@
 
 #pragma once
 
-#include "base_sink.h"
-#include "spdlog/details/log_msg.h"
-#include "spdlog/details/null_mutex.h"
-#include "spdlog/details/pattern_formatter.h"
-
 #include <algorithm>
 #include <memory>
 #include <mutex>
 #include <vector>
 
+#include "../details/log_msg.h"
+#include "../details/null_mutex.h"
+#include "../pattern_formatter.h"
+#include "./base_sink.h"
+
 // Distribution sink (mux). Stores a vector of sinks which get called when log
 // is called
 
 namespace spdlog {
 namespace sinks {
 
-template<typename Mutex>
-class dist_sink : public base_sink<Mutex>
-{
+template <typename Mutex>
+class dist_sink : public base_sink<Mutex> {
 public:
     dist_sink() = default;
+    explicit dist_sink(std::vector<std::shared_ptr<sink>> sinks)
+        : sinks_(std::move(sinks)) {}
+
     dist_sink(const dist_sink &) = delete;
     dist_sink &operator=(const dist_sink &) = delete;
 
-    void add_sink(std::shared_ptr<sink> sink)
-    {
+    void add_sink(std::shared_ptr<sink> sub_sink) {
         std::lock_guard<Mutex> lock(base_sink<Mutex>::mutex_);
-        sinks_.push_back(sink);
+        sinks_.push_back(std::move(sub_sink));
     }
 
-    void remove_sink(std::shared_ptr<sink> sink)
-    {
+    void remove_sink(std::shared_ptr<sink> sub_sink) {
         std::lock_guard<Mutex> lock(base_sink<Mutex>::mutex_);
-        sinks_.erase(std::remove(sinks_.begin(), sinks_.end(), sink), sinks_.end());
+        sinks_.erase(std::remove(sinks_.begin(), sinks_.end(), sub_sink), sinks_.end());
     }
 
-    void set_sinks(std::vector<std::shared_ptr<sink>> sinks)
-    {
+    void set_sinks(std::vector<std::shared_ptr<sink>> sinks) {
         std::lock_guard<Mutex> lock(base_sink<Mutex>::mutex_);
         sinks_ = std::move(sinks);
     }
 
-    std::vector<std::shared_ptr<sink>> &sinks()
-    {
-        return sinks_;
-    }
+    std::vector<std::shared_ptr<sink>> &sinks() { return sinks_; }
 
 protected:
-    void sink_it_(const details::log_msg &msg) override
-    {
-        for (auto &sink : sinks_)
-        {
-            if (sink->should_log(msg.level))
-            {
-                sink->log(msg);
+    void sink_it_(const details::log_msg &msg) override {
+        for (const auto &sub_sink : sinks_) {
+            if (sub_sink->should_log(msg.log_level)) {
+                sub_sink->log(msg);
             }
         }
     }
 
-    void flush_() override
-    {
-        for (auto &sink : sinks_)
-        {
-            sink->flush();
+    void flush_() override {
+        for (auto &sub_sink : sinks_) {
+            sub_sink->flush();
         }
     }
 
-    void set_pattern_(const std::string &pattern) override
-    {
-        set_formatter_(details::make_unique<spdlog::pattern_formatter>(pattern));
+    void set_pattern_(const std::string &pattern) override {
+        set_formatter_(std::make_unique<spdlog::pattern_formatter>(pattern));
     }
 
-    void set_formatter_(std::unique_ptr<spdlog::formatter> sink_formatter) override
-    {
+    void set_formatter_(std::unique_ptr<spdlog::formatter> sink_formatter) override {
         base_sink<Mutex>::formatter_ = std::move(sink_formatter);
-        for (auto &sink : sinks_)
-        {
-            sink->set_formatter(base_sink<Mutex>::formatter_->clone());
+        for (auto &sub_sink : sinks_) {
+            sub_sink->set_formatter(base_sink<Mutex>::formatter_->clone());
         }
     }
     std::vector<std::shared_ptr<sink>> sinks_;
@@ -89,5 +77,5 @@ protected:
 using dist_sink_mt = dist_sink<std::mutex>;
 using dist_sink_st = dist_sink<details::null_mutex>;
 
-} // namespace sinks
-} // namespace spdlog
+}  // namespace sinks
+}  // namespace spdlog