filesystem: Rename some internal symbols to remove "FSops" terminology.

This removes the "FSops" naming scheme, which was meant to mirror the
"RWops" naming scheme, which was also recently removed from SDL3.

The build system defines (`SDL_FSOPS_POSIX`, etc) and the source code
filenames retain this, because there's already things using the word
"filesystem" that might overlap (for example, lots of things have a
unique "SDL_sysfilesystem.c", to query base dirs, etc, but almost
everything uses the POSIX "SDL_sysfsops.c" source code.

Fixes #9288.

src/filesystem/SDL_filesystem.c

@@ -48,7 +48,7 @@ int SDL_RemovePath(const char *path)
     if (!path) {
         return SDL_InvalidParamError("path");
     }
-    return SDL_SYS_FSremove(path);
+    return SDL_SYS_RemovePath(path);
 }
 
 int SDL_RenamePath(const char *oldpath, const char *newpath)
@@ -58,7 +58,7 @@ int SDL_RenamePath(const char *oldpath, const char *newpath)
     } else if (!newpath) {
         return SDL_InvalidParamError("newpath");
     }
-    return SDL_SYS_FSrename(oldpath, newpath);
+    return SDL_SYS_RenamePath(oldpath, newpath);
 }
 
 int SDL_CreateDirectory(const char *path)
@@ -67,7 +67,7 @@ int SDL_CreateDirectory(const char *path)
     if (!path) {
         return SDL_InvalidParamError("path");
     }
-    return SDL_SYS_FSmkdir(path);
+    return SDL_SYS_CreateDirectory(path);
 }
 
 int SDL_EnumerateDirectory(const char *path, SDL_EnumerateDirectoryCallback callback, void *userdata)
@@ -77,15 +77,15 @@ int SDL_EnumerateDirectory(const char *path, SDL_EnumerateDirectoryCallback call
     } else if (!callback) {
         return SDL_InvalidParamError("callback");
     }
-    return SDL_SYS_FSenumerate(path, path, callback, userdata);
+    return SDL_SYS_EnumerateDirectory(path, path, callback, userdata);
 }
 
-int SDL_GetPathInfo(const char *path, SDL_PathInfo *stat)
+int SDL_GetPathInfo(const char *path, SDL_PathInfo *info)
 {
     if (!path) {
         return SDL_InvalidParamError("path");
-    } else if (!stat) {
-        return SDL_InvalidParamError("stat");
+    } else if (!info) {
+        return SDL_InvalidParamError("info");
     }
-    return SDL_SYS_FSstat(path, stat);
+    return SDL_SYS_GetPathInfo(path, info);
 }

src/filesystem/SDL_sysfilesystem.h

@@ -22,11 +22,11 @@
 #ifndef SDL_sysfilesystem_h_
 #define SDL_sysfilesystem_h_
 
-int SDL_SYS_FSenumerate(const char *fullpath, const char *dirname, SDL_EnumerateDirectoryCallback cb, void *userdata);
-int SDL_SYS_FSremove(const char *fullpath);
-int SDL_SYS_FSrename(const char *oldfullpath, const char *newfullpath);
-int SDL_SYS_FSmkdir(const char *fullpath);
-int SDL_SYS_FSstat(const char *fullpath, SDL_PathInfo *info);
+int SDL_SYS_EnumerateDirectory(const char *path, const char *dirname, SDL_EnumerateDirectoryCallback cb, void *userdata);
+int SDL_SYS_RemovePath(const char *path);
+int SDL_SYS_RenamePath(const char *oldpath, const char *newpath);
+int SDL_SYS_CreateDirectory(const char *path);
+int SDL_SYS_GetPathInfo(const char *path, SDL_PathInfo *info);
 
 #endif
 

src/filesystem/dummy/SDL_sysfsops.c

@@ -25,27 +25,27 @@
 
 #include "../SDL_sysfilesystem.h"
 
-int SDL_SYS_FSenumerate(const char *fullpath, const char *dirname, SDL_EnumerateDirectoryCallback cb, void *userdata)
+int SDL_SYS_EnumerateDirectory(const char *path, const char *dirname, SDL_EnumerateDirectoryCallback cb, void *userdata)
 {
     return SDL_Unsupported();
 }
 
-int SDL_SYS_FSremove(const char *fullpath)
+int SDL_SYS_RemovePath(const char *path)
 {
     return SDL_Unsupported();
 }
 
-int SDL_SYS_FSrename(const char *oldfullpath, const char *newfullpath)
+int SDL_SYS_RenamePath(const char *oldpath, const char *newpath)
 {
     return SDL_Unsupported();
 }
 
-int SDL_SYS_FSmkdir(const char *fullpath)
+int SDL_SYS_CreateDirectory(const char *path)
 {
     return SDL_Unsupported();
 }
 
-int SDL_SYS_FSstat(const char *fullpath, SDL_PathInfo *st)
+int SDL_SYS_GetPathInfo(const char *path, SDL_PathInfo *info)
 {
     return SDL_Unsupported();
 }

src/filesystem/posix/SDL_sysfsops.c

@@ -31,11 +31,11 @@
 
 #include "../SDL_sysfilesystem.h"
 
-int SDL_SYS_FSenumerate(const char *fullpath, const char *dirname, SDL_EnumerateDirectoryCallback cb, void *userdata)
+int SDL_SYS_EnumerateDirectory(const char *path, const char *dirname, SDL_EnumerateDirectoryCallback cb, void *userdata)
 {
     int retval = 1;
 
-    DIR *dir = opendir(fullpath);
+    DIR *dir = opendir(path);
     if (!dir) {
         return SDL_SetError("Can't open directory: %s", strerror(errno));
     }
@@ -55,13 +55,13 @@ int SDL_SYS_FSenumerate(const char *fullpath, const char *dirname, SDL_Enumerate
     return retval;
 }
 
-int SDL_SYS_FSremove(const char *fullpath)
+int SDL_SYS_RemovePath(const char *path)
 {
-    int rc = remove(fullpath);
+    int rc = remove(path);
     if (rc < 0) {
         const int origerrno = errno;
         if (origerrno == ENOENT) {
-            char *parent = SDL_strdup(fullpath);
+            char *parent = SDL_strdup(path);
             if (!parent) {
                 return -1;
             }
@@ -83,22 +83,22 @@ int SDL_SYS_FSremove(const char *fullpath)
     return 0;
 }
 
-int SDL_SYS_FSrename(const char *oldfullpath, const char *newfullpath)
+int SDL_SYS_RenamePath(const char *oldpath, const char *newpath)
 {
-    if (rename(oldfullpath, newfullpath) < 0) {
+    if (rename(oldpath, newpath) < 0) {
         return SDL_SetError("Can't remove path: %s", strerror(errno));
     }
     return 0;
 }
 
-int SDL_SYS_FSmkdir(const char *fullpath)
+int SDL_SYS_CreateDirectory(const char *path)
 {
-    const int rc = mkdir(fullpath, 0770);
+    const int rc = mkdir(path, 0770);
     if (rc < 0) {
         const int origerrno = errno;
         if (origerrno == EEXIST) {
             struct stat statbuf;
-            if ((stat(fullpath, &statbuf) == 0) && (S_ISDIR(statbuf.st_mode))) {
+            if ((stat(path, &statbuf) == 0) && (S_ISDIR(statbuf.st_mode))) {
                 return 0;  // it already exists and it's a directory, consider it success.
             }
         }
@@ -107,10 +107,10 @@ int SDL_SYS_FSmkdir(const char *fullpath)
     return 0;
 }
 
-int SDL_SYS_FSstat(const char *fullpath, SDL_PathInfo *info)
+int SDL_SYS_GetPathInfo(const char *path, SDL_PathInfo *info)
 {
     struct stat statbuf;
-    const int rc = stat(fullpath, &statbuf);
+    const int rc = stat(path, &statbuf);
     if (rc < 0) {
         return SDL_SetError("Can't stat: %s", strerror(errno));
     } else if (S_ISREG(statbuf.st_mode)) {

src/filesystem/windows/SDL_sysfsops.c

@@ -26,10 +26,10 @@
 #include "../../core/windows/SDL_windows.h"
 #include "../SDL_sysfilesystem.h"
 
-int SDL_SYS_FSenumerate(const char *fullpath, const char *dirname, SDL_EnumerateDirectoryCallback cb, void *userdata)
+int SDL_SYS_EnumerateDirectory(const char *path, const char *dirname, SDL_EnumerateDirectoryCallback cb, void *userdata)
 {
     int retval = 1;
-    if (*fullpath == '\0') {  // if empty (completely at the root), we need to enumerate drive letters.
+    if (*path == '\0') {  // if empty (completely at the root), we need to enumerate drive letters.
         const DWORD drives = GetLogicalDrives();
         char name[3] = { 0, ':', '\0' };
         for (int i = 'A'; (retval == 1) && (i <= 'Z'); i++) {
@@ -39,7 +39,7 @@ int SDL_SYS_FSenumerate(const char *fullpath, const char *dirname, SDL_Enumerate
             }
         }
     } else {
-        const size_t patternlen = SDL_strlen(fullpath) + 3;
+        const size_t patternlen = SDL_strlen(path) + 3;
         char *pattern = (char *) SDL_malloc(patternlen);
         if (!pattern) {
             return -1;
@@ -48,7 +48,7 @@ int SDL_SYS_FSenumerate(const char *fullpath, const char *dirname, SDL_Enumerate
         // you need a wildcard to enumerate through FindFirstFileEx(), but the wildcard is only checked in the
         // filename element at the end of the path string, so always tack on a "\\*" to get everything, and
         // also prevent any wildcards inserted by the app from being respected.
-        SDL_snprintf(pattern, patternlen, "%s\\*", fullpath);
+        SDL_snprintf(pattern, patternlen, "%s\\*", path);
 
         WCHAR *wpattern = WIN_UTF8ToString(pattern);
         SDL_free(pattern);
@@ -87,9 +87,9 @@ int SDL_SYS_FSenumerate(const char *fullpath, const char *dirname, SDL_Enumerate
     return retval;
 }
 
-int SDL_SYS_FSremove(const char *fullpath)
+int SDL_SYS_RemovePath(const char *path)
 {
-    WCHAR *wpath = WIN_UTF8ToString(fullpath);
+    WCHAR *wpath = WIN_UTF8ToString(path);
     if (!wpath) {
         return -1;
     }
@@ -109,14 +109,14 @@ int SDL_SYS_FSremove(const char *fullpath)
     return !rc ? WIN_SetError("Couldn't remove path") : 0;
 }
 
-int SDL_SYS_FSrename(const char *oldfullpath, const char *newfullpath)
+int SDL_SYS_RenamePath(const char *oldpath, const char *newpath)
 {
-    WCHAR *woldpath = WIN_UTF8ToString(oldfullpath);
+    WCHAR *woldpath = WIN_UTF8ToString(oldpath);
     if (!woldpath) {
         return -1;
     }
 
-    WCHAR *wnewpath = WIN_UTF8ToString(newfullpath);
+    WCHAR *wnewpath = WIN_UTF8ToString(newpath);
     if (!wnewpath) {
         SDL_free(woldpath);
         return -1;
@@ -128,9 +128,9 @@ int SDL_SYS_FSrename(const char *oldfullpath, const char *newfullpath)
     return !rc ? WIN_SetError("Couldn't rename path") : 0;
 }
 
-int SDL_SYS_FSmkdir(const char *fullpath)
+int SDL_SYS_CreateDirectory(const char *path)
 {
-    WCHAR *wpath = WIN_UTF8ToString(fullpath);
+    WCHAR *wpath = WIN_UTF8ToString(path);
     if (!wpath) {
         return -1;
     }
@@ -152,9 +152,9 @@ static Sint64 FileTimeToSDLTime(const FILETIME *ft)
     return (Sint64) ((((Uint64)large.QuadPart) - delta_1601_epoch_100ns) / (SDL_NS_PER_SECOND / 100ull));  // [secs] (adjust to epoch and convert 1/100th nanosecond units to seconds).
 }
 
-int SDL_SYS_FSstat(const char *fullpath, SDL_PathInfo *info)
+int SDL_SYS_GetPathInfo(const char *path, SDL_PathInfo *info)
 {
-    WCHAR *wpath = WIN_UTF8ToString(fullpath);
+    WCHAR *wpath = WIN_UTF8ToString(path);
     if (!wpath) {
         return -1;
     }