121 lines
3.4 KiB
JavaScript
121 lines
3.4 KiB
JavaScript
'use strict';
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/**
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* diff
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* @module gulp-git/lib/diff
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*/
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var Vinyl = require('vinyl');
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var through = require('through2');
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var log = require('fancy-log');
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var path = require('path');
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var exec = require('child_process').exec;
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var catFile = require('./catFile');
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// https://git-scm.com/docs/git-diff#_raw_output_format
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/* eslint-disable */
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var RE_DIFF_RESULT = /\:(\w+)\s+(\w+)\s+(\w+)(?:\.{3})?\s+(\w+)(?:\.{3})?\s+(\w+)(\u0000|\t|\s+)(.+?)(?:\6|\n)(?:([^:]+?)\6)?/g;
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/* eslint-enable */
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function getReaslt(data) {
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var result = [];
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if (data && data.length) {
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var str = data.toString();
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var match;
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RE_DIFF_RESULT.lastIndex = 0;
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while ((match = RE_DIFF_RESULT.exec(str))) {
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result.push({
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// mode for compare "src"
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srcMode: match[1],
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// mode for compare "dst"
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dstMode: match[2],
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// sha1 for compare "src"
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srcHash: match[3],
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// sha1 for compare "dst"
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dstHash: match[4],
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// status
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status: match[5],
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// path for compare "src"
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srcPath: match[7],
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// path for compare "dst"
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dstPath: match[8] || match[7],
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});
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}
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}
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return result;
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}
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/**
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* @typedef {Object} diffOptions
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* @property {string} cwd {@link https://github.com/gulpjs/vinyl-fs#optionscwd}
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* @property {string} base {@link https://github.com/gulpjs/vinyl-fs#optionsbase}
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* @property {boolean} read {@link https://github.com/gulpjs/vinyl-fs#optionsread}
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* @property {boolean} buffer {@link https://github.com/gulpjs/vinyl-fs#optionsbuffer}
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* @property {boolean} stripBOM {@link https://github.com/gulpjs/vinyl-fs#optionsstripbom}
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* @property {boolean} log show log in console
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* @property {string[]} args Command parameter for `git diff`
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*/
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/**
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* get git diff result as a stream of vinyl `File` objects.
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*
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* @example
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const git = require('gulp-git');
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const eslint = require('gulp-eslint');
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git.diff('--cached', {
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args: '-- *.js'
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})
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.pipe(eslint())
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* @param {string} compare compare arg for `git diff`
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* @param {diffOptions} opt [diffOptions]{@link module:gulp-git/lib/diff~diffOptions}
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* @returns {stream} stream of vinyl `File` objects.
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*/
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module.exports = function (compare, opt) {
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if (!opt) opt = {};
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if (!opt.cwd) opt.cwd = process.cwd();
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// https://github.com/gulpjs/vinyl-fs#optionsread
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if (undefined === opt.read || null === opt.read) opt.read = true;
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if (undefined === opt.log || null === opt.log) opt.log = true;
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var srcStream = through.obj();
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var cmd = compare;
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if (!/--diff-filter=/.test(opt.args)) {
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cmd += ' --diff-filter=ACM';
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}
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if (opt.args) {
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cmd += ' ' + opt.args;
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}
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var maxBuffer = opt.maxBuffer || 200 * 1024;
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exec('git diff --raw -z ' + cmd, {cwd: opt.cwd, maxBuffer: maxBuffer}, function(err, stdout) {
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if (err) return srcStream.emit('error', err);
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var files = getReaslt(stdout);
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if (opt.log) {
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log('git diff --name-status ' + cmd + '\n' + files.map(function(diff) {
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return diff.status + '\t' + diff.dstPath;
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}).join('\n'));
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}
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files.forEach(function(diff) {
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srcStream.write(new Vinyl({
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path: path.resolve(opt.cwd, diff.dstPath),
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cwd: opt.cwd,
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base: opt.base,
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git: {
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hash: diff.dstHash,
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diff: diff
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}
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}));
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});
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srcStream.end();
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});
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if (opt.read) {
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// read file contents when opt.read is `true`
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return srcStream.pipe(catFile(opt));
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}
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return srcStream;
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};
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