148 lines
3.4 KiB
JavaScript
148 lines
3.4 KiB
JavaScript
'use strict'; /**
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* Copyright (c) 2014-present, Facebook, Inc. All rights reserved.
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*
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* This source code is licensed under the BSD-style license found in the
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* LICENSE file in the root directory of this source tree. An additional grant
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* of patent rights can be found in the PATENTS file in the same directory.
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*
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*
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*/
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const fs = require('fs');
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const path = require('path');var _require =
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require('child_process');const spawn = _require.spawn;
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const H = require('../constants');
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function find(
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roots,
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extensions,
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ignore,
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callback)
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{
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const result = [];
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let activeCalls = 0;
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function search(directory) {
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activeCalls++;
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fs.readdir(directory, (err, names) => {
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activeCalls--;
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names.forEach(file => {
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file = path.join(directory, file);
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if (ignore(file)) {
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return;
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}
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activeCalls++;
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fs.lstat(file, (err, stat) => {
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activeCalls--;
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if (!err && stat && !stat.isSymbolicLink()) {
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if (stat.isDirectory()) {
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search(file);
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} else {
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const ext = path.extname(file).substr(1);
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if (extensions.indexOf(ext) !== -1) {
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result.push([file, stat.mtime.getTime()]);
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}
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}
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}
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if (activeCalls === 0) {
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callback(result);
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}
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});
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});
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if (activeCalls === 0) {
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callback(result);
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}
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});
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}
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roots.forEach(search);
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}
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function findNative(
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roots,
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extensions,
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ignore,
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callback)
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{
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const args = [].concat(roots);
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args.push('-type', 'f');
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if (extensions.length) {
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args.push('\(');
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}
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extensions.forEach((ext, index) => {
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if (index) {
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args.push('-o');
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}
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args.push('-iname');
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args.push('*.' + ext);
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});
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if (extensions.length) {
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args.push('\)');
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}
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const child = spawn('find', args);
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let stdout = '';
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child.stdout.setEncoding('utf-8');
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child.stdout.on('data', data => stdout += data);
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child.stdout.on('close', () => {
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const lines = stdout.trim().split('\n').filter(x => !ignore(x));
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const result = [];
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let count = lines.length;
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if (!count) {
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callback([]);
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} else {
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lines.forEach(path => {
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fs.stat(path, (err, stat) => {
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if (!err && stat) {
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result.push([path, stat.mtime.getTime()]);
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}
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if (--count === 0) {
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callback(result);
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}
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});
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});
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}
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});
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}
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module.exports = function nodeCrawl(
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options)
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{const
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data = options.data,extensions = options.extensions,forceNodeFilesystemAPI = options.forceNodeFilesystemAPI,ignore = options.ignore,roots = options.roots;
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return new Promise(resolve => {
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const callback = list => {
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const files = Object.create(null);
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list.forEach(fileData => {
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const name = fileData[0];
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const mtime = fileData[1];
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const existingFile = data.files[name];
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if (existingFile && existingFile[H.MTIME] === mtime) {
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files[name] = existingFile;
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} else {
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// See ../constants.js
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files[name] = ['', mtime, 0, []];
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}
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});
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data.files = files;
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resolve(data);
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};
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if (forceNodeFilesystemAPI || process.platform === 'win32') {
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find(roots, extensions, ignore, callback);
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} else {
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findNative(roots, extensions, ignore, callback);
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}
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});
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}; |