feat(fs): 添加自动识别编码读取文本文件功能

实现通过自动检测文件编码来读取文本文件的功能
在IPC通道、预加载API和文件服务中添加相关方法

packages/shared/IpcChannel.ts

@@ -156,6 +156,7 @@ export enum IpcChannel {
   File_Base64File = 'file:base64File',
   File_GetPdfInfo = 'file:getPdfInfo',
   Fs_Read = 'fs:read',
+  Fs_ReadText = 'fs:readText',
   File_OpenWithRelativePath = 'file:openWithRelativePath',
   File_IsTextFile = 'file:isTextFile',
 

src/main/ipc.ts

@@ -470,6 +470,7 @@ export function registerIpc(mainWindow: BrowserWindow, app: Electron.App) {
 
   // fs
   ipcMain.handle(IpcChannel.Fs_Read, FileService.readFile.bind(FileService))
+  ipcMain.handle(IpcChannel.Fs_ReadText, FileService.readTextFileWithAutoEncoding.bind(FileService))
 
   // export
   ipcMain.handle(IpcChannel.Export_Word, exportService.exportToWord.bind(exportService))

src/main/services/FileSystemService.ts

@@ -1,3 +1,4 @@
+import { readTextFileWithAutoEncoding } from '@main/utils/file'
 import { TraceMethod } from '@mcp-trace/trace-core'
 import fs from 'fs/promises'
 
@@ -8,4 +9,15 @@ export default class FileService {
     if (encoding) return fs.readFile(path, { encoding })
     return fs.readFile(path)
   }
+
+  /**
+   * 自动识别编码，读取文本文件
+   * @param _ event
+   * @param pathOrUrl
+   * @throws 路径不存在时抛出错误
+   */
+  @TraceMethod({ spanName: 'readTextFileWithAutoEncoding', tag: 'FileService' })
+  public static async readTextFileWithAutoEncoding(_: Electron.IpcMainInvokeEvent, path: string): Promise<string> {
+    return readTextFileWithAutoEncoding(path)
+  }
 }

src/main/utils/file.ts

@@ -168,6 +168,7 @@ export function getMcpDir() {
  * 读取文件内容并自动检测编码格式进行解码
  * @param filePath - 文件路径
  * @returns 解码后的文件内容
+ * @throws 如果路径不存在抛出错误
  */
 export async function readTextFileWithAutoEncoding(filePath: string): Promise<string> {
   const encoding = (await chardet.detectFile(filePath, { sampleSize: MB })) || 'UTF-8'

src/preload/index.ts

@@ -176,7 +176,8 @@ const api = {
     isTextFile: (filePath: string): Promise<boolean> => ipcRenderer.invoke(IpcChannel.File_IsTextFile, filePath)
   },
   fs: {
-    read: (pathOrUrl: string, encoding?: BufferEncoding) => ipcRenderer.invoke(IpcChannel.Fs_Read, pathOrUrl, encoding)
+    read: (pathOrUrl: string, encoding?: BufferEncoding) => ipcRenderer.invoke(IpcChannel.Fs_Read, pathOrUrl, encoding),
+    readText: (pathOrUrl: string): Promise<string> => ipcRenderer.invoke(IpcChannel.Fs_ReadText, pathOrUrl)
   },
   export: {
     toWord: (markdown: string, fileName: string) => ipcRenderer.invoke(IpcChannel.Export_Word, markdown, fileName)