11

src-tauri/src/commands/fs_util.rs

@@ -74,3 +74,165 @@ pub async fn get_media_duration_seconds(path: String) -> Result<f64, String> {
         .await
         .map_err(|e| e.to_string())
 }
+
+/// 将受信任的本地媒体文件复制到用户指定路径（供「另存为」下载）。
+#[tauri::command]
+pub async fn copy_local_file(source_path: String, dest_path: String) -> Result<(), String> {
+    let source = normalize_path(source_path.trim());
+    if source.as_os_str().is_empty() {
+        return Err("源路径为空".into());
+    }
+    if !source.is_file() {
+        return Err(format!("源文件不存在: {}", source.display()));
+    }
+    if !is_allowed_local_media(&source) {
+        return Err("不允许复制该路径下的文件".into());
+    }
+
+    let dest = normalize_path(dest_path.trim());
+    if dest.as_os_str().is_empty() {
+        return Err("目标路径为空".into());
+    }
+    if let Some(parent) = dest.parent() {
+        if !parent.as_os_str().is_empty() {
+            tokio::fs::create_dir_all(parent)
+                .await
+                .map_err(|e| format!("创建目标目录失败: {e}"))?;
+        }
+    }
+
+    tokio::fs::copy(&source, &dest)
+        .await
+        .map_err(|e| format!("保存文件失败: {e}"))?;
+    Ok(())
+}
+
+/// 将文本写入用户指定路径（供 ASR 结果「另存为」）。
+#[tauri::command]
+pub async fn write_local_text_file(path: String, content: String) -> Result<(), String> {
+    let dest = normalize_path(path.trim());
+    if dest.as_os_str().is_empty() {
+        return Err("目标路径为空".into());
+    }
+    if let Some(parent) = dest.parent() {
+        if !parent.as_os_str().is_empty() {
+            tokio::fs::create_dir_all(parent)
+                .await
+                .map_err(|e| format!("创建目标目录失败: {e}"))?;
+        }
+    }
+    tokio::fs::write(&dest, content.as_bytes())
+        .await
+        .map_err(|e| format!("保存文件失败: {e}"))?;
+    Ok(())
+}
+
+#[cfg(target_os = "windows")]
+mod win_shell {
+    use std::os::windows::ffi::OsStrExt;
+    use std::path::Path;
+
+    pub fn select_file_in_explorer(path: &Path) -> Result<(), String> {
+        let wide: Vec<u16> = path
+            .as_os_str()
+            .encode_wide()
+            .chain(std::iter::once(0))
+            .collect();
+
+        unsafe {
+            let _ = ffi::CoInitialize(std::ptr::null());
+            let pidl = ffi::ILCreateFromPathW(wide.as_ptr());
+            if pidl.is_null() {
+                return Err(format!("无法定位文件: {}", path.display()));
+            }
+            let hr = ffi::SHOpenFolderAndSelectItems(pidl, 0, std::ptr::null(), 0);
+            ffi::ILFree(pidl);
+            if hr != 0 {
+                return Err(format!("打开文件位置失败 (错误码 {hr})"));
+            }
+        }
+        Ok(())
+    }
+
+    mod ffi {
+        #[repr(C, packed(1))]
+        pub struct ITEMIDLIST {
+            pub mkid: SHITEMID,
+        }
+
+        #[repr(C, packed(1))]
+        pub struct SHITEMID {
+            pub cb: u16,
+            pub ab_id: [u8; 1],
+        }
+
+        #[link(name = "shell32")]
+        extern "system" {
+            pub fn ILCreateFromPathW(pszpath: *const u16) -> *mut ITEMIDLIST;
+            pub fn SHOpenFolderAndSelectItems(
+                pidlfolder: *const ITEMIDLIST,
+                cidl: u32,
+                apidl: *const *const ITEMIDLIST,
+                dwflags: u32,
+            ) -> i32;
+            pub fn ILFree(pidl: *const ITEMIDLIST) -> i32;
+        }
+
+        #[link(name = "ole32")]
+        extern "system" {
+            pub fn CoInitialize(pvreserved: *const core::ffi::c_void) -> i32;
+        }
+    }
+}
+
+fn reveal_in_folder_sync(path: &Path) -> Result<(), String> {
+    let absolute = std::path::absolute(path).map_err(|e| format!("无法解析路径: {e}"))?;
+    let absolute = dunce::simplified(&absolute);
+
+    #[cfg(target_os = "windows")]
+    {
+        return win_shell::select_file_in_explorer(&absolute);
+    }
+
+    #[cfg(target_os = "macos")]
+    {
+        use std::process::Command;
+        let path_str = absolute.display().to_string();
+        Command::new("open")
+            .args(["-R", &path_str])
+            .spawn()
+            .map_err(|e| format!("打开文件位置失败: {e}"))?;
+        return Ok(());
+    }
+
+    #[cfg(not(any(target_os = "windows", target_os = "macos")))]
+    {
+        use std::process::Command;
+        let parent = absolute
+            .parent()
+            .ok_or_else(|| "无法获取文件所在目录".to_string())?;
+        Command::new("xdg-open")
+            .arg(parent)
+            .spawn()
+            .map_err(|e| format!("打开文件位置失败: {e}"))?;
+        Ok(())
+    }
+}
+
+/// 在系统文件管理器中打开并选中本地文件（Windows: `explorer /select`）。
+#[tauri::command]
+pub async fn reveal_local_file_in_folder(path: String) -> Result<(), String> {
+    let normalized = normalize_path(path.trim());
+    if normalized.as_os_str().is_empty() {
+        return Err("路径为空".into());
+    }
+    if !normalized.is_file() {
+        return Err(format!("文件不存在: {}", normalized.display()));
+    }
+    if !is_allowed_local_media(&normalized) {
+        return Err("不允许打开该路径下的文件".into());
+    }
+    tokio::task::spawn_blocking(move || reveal_in_folder_sync(&normalized))
+        .await
+        .map_err(|e| e.to_string())?
+}

src-tauri/src/lib.rs

@@ -108,6 +108,9 @@ pub fn run() {
             commands::nodejs::list_nodejs_scripts,
             commands::fs_util::read_local_file_base64,
             commands::fs_util::get_media_duration_seconds,
+            commands::fs_util::copy_local_file,
+            commands::fs_util::write_local_text_file,
+            commands::fs_util::reveal_local_file_in_folder,
             commands::avatar::list_avatars,
             commands::avatar::insert_avatar,
             commands::avatar::update_avatar_name,