create native file engine bindings for TUI/Blitz

packages/html/Cargo.toml

@@ -21,6 +21,8 @@ enumset = "1.0.11"
 keyboard-types = "0.6.2"
 async-trait = "0.1.58"
 serde-value = "0.7.0"
+tokio = { version = "1.27", features = ["fs", "io-util"], optional = true }
+rfd = { version = "0.11.3", optional = true }
 
 [dependencies.web-sys]
 optional = true
@@ -48,4 +50,5 @@ serde_json = "1"
 default = ["serialize"]
 serialize = ["serde", "serde_repr", "euclid/serde", "keyboard-types/serde", "dioxus-core/serialize"]
 wasm-bind = ["web-sys", "wasm-bindgen"]
+native-bind = ["tokio", "rfd"]
 hot-reload-context = ["dioxus-rsx"]

packages/html/src/lib.rs

@@ -20,6 +20,8 @@ pub mod events;
 pub mod geometry;
 mod global_attributes;
 pub mod input_data;
+#[cfg(feature = "native-bind")]
+pub mod native_bind;
 mod render_template;
 #[cfg(feature = "wasm-bind")]
 mod web_sys_bind;

packages/html/src/native_bind/mod.rs

@@ -0,0 +1,3 @@
+mod native_file_engine;
+
+pub use native_file_engine::*;

packages/html/src/native_bind/native_file_engine.rs

@@ -0,0 +1,43 @@
+use std::path::PathBuf;
+
+use crate::FileEngine;
+use tokio::fs::File;
+use tokio::io::AsyncReadExt;
+
+pub struct NativeFileEngine {
+    files: Vec<PathBuf>,
+}
+
+impl NativeFileEngine {
+    pub fn new(files: Vec<PathBuf>) -> Self {
+        Self { files }
+    }
+}
+
+#[async_trait::async_trait(?Send)]
+impl FileEngine for NativeFileEngine {
+    fn files(&self) -> Vec<String> {
+        self.files
+            .iter()
+            .filter_map(|f| Some(f.to_str()?.to_string()))
+            .collect()
+    }
+
+    async fn read_file(&self, file: &str) -> Option<Vec<u8>> {
+        let mut file = File::open(file).await.ok()?;
+
+        let mut contents = Vec::new();
+        file.read_to_end(&mut contents).await.ok()?;
+
+        Some(contents)
+    }
+
+    async fn read_file_to_string(&self, file: &str) -> Option<String> {
+        let mut file = File::open(file).await.ok()?;
+
+        let mut contents = String::new();
+        file.read_to_string(&mut contents).await.ok()?;
+
+        Some(contents)
+    }
+}