feat: resolve possible symlinks before db modification watching

Watching a symlink instead of the target file won't actually trigger a
db reloading if the symlinked file changes

package.json

@@ -23,7 +23,8 @@
   },
   "dependencies": {
     "vscode-languageclient": "^5.2.1",
-    "ws": "^6.2.1"
+    "ws": "^6.2.1",
+    "fs": "^0.0.1-security"
   },
   "repository": {
     "type": "git",
@@ -741,5 +742,10 @@
         }
       }
     }
+  },
+  "__metadata": {
+    "id": "8e21d425-1e30-4072-8436-786a9017e5c7",
+    "publisherDisplayName": "ccls-project",
+    "publisherId": "c8f976c9-da3f-47d4-a344-bc810b73caed"
   }
 }

src/serverContext.ts

@@ -1,4 +1,5 @@
 import * as cp from "child_process";
+import * as fs from 'fs';
 import {
   CancellationToken,
   CodeLens,
@@ -304,7 +305,11 @@ export class ServerContext implements Disposable {
       let db_dir = config.get('misc.compilationDatabaseDirectory');
       if (!db_dir || db_dir === '')
         db_dir = this.cwd;
-      const db_watcher = workspace.createFileSystemWatcher(db_dir + '/compile_commands.json', false, false, false);
+      const db_path = db_dir + '/compile_commands.json';
+      // resolve db_path in case it is a symlink, otherwise the file system watcher
+      // won't catch modifications of the linked file
+      const db_real_path = fs.realpathSync(db_path);
+      const db_watcher = workspace.createFileSystemWatcher(db_real_path, false, false, false);
       this._dispose.push(db_watcher);
       db_watcher.onDidChange((e: Uri) => {
         this.client.sendNotification("workspace/didChangeConfiguration");
@@ -465,7 +470,7 @@ export class ServerContext implements Disposable {
       documentSelector: ['c', 'cpp', 'objective-c', 'objective-cpp'],
       // synchronize: {
       // 	configurationSection: 'ccls',
-      // 	fileEvents: workspace.createFileSystemWatcher('**/.cc')
+      // 	fileEvents: workspace.createfsWatcher('**/.cc')
       // },
       errorHandler: new CclsErrorHandler(config),
       initializationFailedHandler: (e) => {