feat: open clangd user/project config

clangd/vscode-clangd#181

package.json

@@ -154,6 +154,14 @@
         "command": "clangd.memoryUsage",
         "title": "Show memory usage"
       },
+      {
+        "command": "clangd.projectConfig",
+        "title": "Open project configuration file"
+      },
+      {
+        "command": "clangd.userConfig",
+        "title": "Open user configuration file"
+      },
       {
         "command": "clangd.install",
         "title": "Install latest clangd language server binary release"

src/index.ts

@@ -3,6 +3,7 @@ import * as cmds from './cmds';
 import { Ctx } from './ctx';
 import { FileStatus, Status } from './file_status';
 import * as install from './install';
+import * as openConfig from './open-config';
 import { ReloadFeature } from './reload';
 
 export async function activate(context: ExtensionContext): Promise<void> {
@@ -28,8 +29,8 @@ export async function activate(context: ExtensionContext): Promise<void> {
     return;
   }
 
+  openConfig.activate(context);
   const fileStatus = new FileStatus();
-
   context.subscriptions.push(
     fileStatus,
 

src/open-config.ts

@@ -0,0 +1,52 @@
+import { commands, ExtensionContext, Uri, window, workspace } from 'coc.nvim';
+import * as fs from 'fs';
+import * as path from 'path';
+
+function getUserConfigFile(): string {
+  let dir: string;
+  switch (process.platform) {
+    case 'win32':
+      dir = process.env.LOCALAPPDATA!;
+      break;
+    case 'darwin':
+      dir = path.join(process.env.HOME!, 'Library', 'Preferences');
+      break;
+    default:
+      dir = process.env.XDG_CONFIG_HOME || path.join(process.env.HOME!, '.config');
+      break;
+  }
+  if (!dir) return '';
+  return path.join(dir, 'clangd', 'config.yaml');
+}
+
+async function openConfigFile(p: string) {
+  if (!fs.existsSync(p)) {
+    await workspace.createFile(p);
+  }
+
+  await workspace.openResource(p);
+}
+
+export function activate(context: ExtensionContext) {
+  context.subscriptions.push(
+    commands.registerCommand('clangd.projectConfig', () => {
+      if (workspace.workspaceFolders.length > 0) {
+        const folder = workspace.workspaceFolders[0];
+        openConfigFile(path.join(Uri.parse(folder.uri).fsPath, '.clangd'));
+      } else {
+        window.showMessage('No project is open', 'warning');
+      }
+    })
+  );
+
+  context.subscriptions.push(
+    commands.registerCommand('clangd.userConfig', () => {
+      const file = getUserConfigFile();
+      if (file) {
+        openConfigFile(file);
+      } else {
+        window.showMessage("Couldn't get global configuration directory", 'warning');
+      }
+    })
+  );
+}