angular-cn/tools/gulp-tasks/validate-commit-message.js

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/**
* @license
* Copyright Google Inc. All Rights Reserved.
*
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://angular.io/license
*/
// tslint:disable:no-console
module.exports = (gulp) => () => {
const validateCommitMessage = require('../validate-commit-message');
const shelljs = require('shelljs');
let baseBranch = 'master';
const currentVersion = require('semver').parse(require('../../package.json').version);
const baseHead =
shelljs.exec(`git ls-remote --heads origin ${currentVersion.major}.${currentVersion.minor}.*`)
.trim()
.split('\n')
.pop();
if (baseHead) {
const match = /refs\/heads\/(.+)/.exec(baseHead);
baseBranch = match && match[1] || baseBranch;
}
// We need to fetch origin explicitly because it might be stale.
// I couldn't find a reliable way to do this without fetch.
result = shelljs.exec(
`git fetch origin ${baseBranch} && git log --reverse --format=%s HEAD ^origin/${baseBranch}`);
if (result.code) {
console.log(result.stderr);
process.exit(1);
}
const commitsByLine = result.trim().split(/\n/).filter(line => line != '');
console.log(`Examining ${commitsByLine.length} commits between HEAD and ${baseBranch}`);
if (commitsByLine.length == 0) {
console.log(`There are zero new commits between this HEAD and ${baseBranch}`);
}
const someCommitsInvalid = !commitsByLine.every(validateCommitMessage);
if (someCommitsInvalid) {
console.log('Please fix the failing commit messages before continuing...');
console.log(
'Commit message guidelines: https://github.com/angular/angular/blob/master/CONTRIBUTING.md#-commit-message-guidelines');
process.exit(1);
}
};