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node_modules/node-addon-api/tools/clang-format.js

@@ -0,0 +1,47 @@
+#!/usr/bin/env node
+
+const spawn = require('child_process').spawnSync;
+const path = require('path');
+
+const filesToCheck = ['*.h', '*.cc'];
+const CLANG_FORMAT_START = process.env.CLANG_FORMAT_START || 'master';
+
+function main(args) {
+  let clangFormatPath = path.dirname(require.resolve('clang-format'));
+  const options = ['--binary=node_modules/.bin/clang-format', '--style=file'];
+
+  const gitClangFormatPath = path.join(clangFormatPath,
+    'bin/git-clang-format');
+  const result = spawn('python', [
+    gitClangFormatPath,
+    ...options,
+    '--diff',
+    CLANG_FORMAT_START,
+    'HEAD',
+    ...filesToCheck
+  ], { encoding: 'utf-8' });
+
+  if (result.error) {
+    console.error('Error running git-clang-format:', result.error);
+    return 2;
+  }
+
+  const clangFormatOutput = result.stdout.trim();
+  if (clangFormatOutput !== '' &&
+      clangFormatOutput !== ('no modified files to format') &&
+      clangFormatOutput !== ('clang-format did not modify any files')) {
+    console.error(clangFormatOutput);
+    const fixCmd = '"npm run lint:fix"';
+    console.error(`
+      ERROR: please run ${fixCmd} to format changes in your commit
+        Note that when running the command locally, please keep your local
+        master branch and working branch up to date with nodejs/node-addon-api
+        to exclude un-related complains.
+        Or you can run "env CLANG_FORMAT_START=upstream/master ${fixCmd}".`);
+    return 1;
+  }
+}
+
+if (require.main === module) {
+  process.exitCode = main(process.argv.slice(2));
+}