383 lines
9.8 KiB
TypeScript
383 lines
9.8 KiB
TypeScript
/*---------------------------------------------------------------------------------------------
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* Copyright (c) Microsoft Corporation. All rights reserved.
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* Licensed under the MIT License. See License.txt in the project root for license information.
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*--------------------------------------------------------------------------------------------*/
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import * as es from 'event-stream';
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import _debounce = require('debounce');
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import * as _filter from 'gulp-filter';
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import * as rename from 'gulp-rename';
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import * as path from 'path';
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import * as fs from 'fs';
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import * as _rimraf from 'rimraf';
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import * as VinylFile from 'vinyl';
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import { ThroughStream } from 'through';
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import * as sm from 'source-map';
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import { pathToFileURL } from 'url';
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import * as ternaryStream from 'ternary-stream';
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const root = path.dirname(path.dirname(__dirname));
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export interface ICancellationToken {
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isCancellationRequested(): boolean;
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}
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const NoCancellationToken: ICancellationToken = { isCancellationRequested: () => false };
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export interface IStreamProvider {
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(cancellationToken?: ICancellationToken): NodeJS.ReadWriteStream;
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}
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export function incremental(streamProvider: IStreamProvider, initial: NodeJS.ReadWriteStream, supportsCancellation?: boolean): NodeJS.ReadWriteStream {
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const input = es.through();
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const output = es.through();
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let state = 'idle';
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let buffer = Object.create(null);
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const token: ICancellationToken | undefined = !supportsCancellation ? undefined : { isCancellationRequested: () => Object.keys(buffer).length > 0 };
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const run = (input: NodeJS.ReadWriteStream, isCancellable: boolean) => {
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state = 'running';
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const stream = !supportsCancellation ? streamProvider() : streamProvider(isCancellable ? token : NoCancellationToken);
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input
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.pipe(stream)
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.pipe(es.through(undefined, () => {
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state = 'idle';
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eventuallyRun();
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}))
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.pipe(output);
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};
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if (initial) {
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run(initial, false);
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}
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const eventuallyRun = _debounce(() => {
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const paths = Object.keys(buffer);
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if (paths.length === 0) {
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return;
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}
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const data = paths.map(path => buffer[path]);
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buffer = Object.create(null);
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run(es.readArray(data), true);
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}, 500);
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input.on('data', (f: any) => {
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buffer[f.path] = f;
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if (state === 'idle') {
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eventuallyRun();
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}
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});
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return es.duplex(input, output);
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}
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export function debounce(task: () => NodeJS.ReadWriteStream, duration = 500): NodeJS.ReadWriteStream {
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const input = es.through();
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const output = es.through();
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let state = 'idle';
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const run = () => {
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state = 'running';
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task()
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.pipe(es.through(undefined, () => {
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const shouldRunAgain = state === 'stale';
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state = 'idle';
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if (shouldRunAgain) {
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eventuallyRun();
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}
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}))
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.pipe(output);
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};
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run();
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const eventuallyRun = _debounce(() => run(), duration);
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input.on('data', () => {
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if (state === 'idle') {
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eventuallyRun();
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} else {
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state = 'stale';
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}
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});
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return es.duplex(input, output);
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}
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export function fixWin32DirectoryPermissions(): NodeJS.ReadWriteStream {
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if (!/win32/.test(process.platform)) {
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return es.through();
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}
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return es.mapSync<VinylFile, VinylFile>(f => {
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if (f.stat && f.stat.isDirectory && f.stat.isDirectory()) {
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f.stat.mode = 16877;
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}
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return f;
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});
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}
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export function setExecutableBit(pattern?: string | string[]): NodeJS.ReadWriteStream {
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const setBit = es.mapSync<VinylFile, VinylFile>(f => {
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if (!f.stat) {
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f.stat = { isFile() { return true; } } as any;
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}
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f.stat.mode = /* 100755 */ 33261;
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return f;
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});
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if (!pattern) {
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return setBit;
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}
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const input = es.through();
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const filter = _filter(pattern, { restore: true });
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const output = input
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.pipe(filter)
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.pipe(setBit)
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.pipe(filter.restore);
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return es.duplex(input, output);
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}
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export function toFileUri(filePath: string): string {
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const match = filePath.match(/^([a-z])\:(.*)$/i);
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if (match) {
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filePath = '/' + match[1].toUpperCase() + ':' + match[2];
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}
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return 'file://' + filePath.replace(/\\/g, '/');
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}
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export function skipDirectories(): NodeJS.ReadWriteStream {
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return es.mapSync<VinylFile, VinylFile | undefined>(f => {
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if (!f.isDirectory()) {
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return f;
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}
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});
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}
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export function cleanNodeModules(rulePath: string): NodeJS.ReadWriteStream {
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const rules = fs.readFileSync(rulePath, 'utf8')
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.split(/\r?\n/g)
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.map(line => line.trim())
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.filter(line => line && !/^#/.test(line));
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const excludes = rules.filter(line => !/^!/.test(line)).map(line => `!**/node_modules/${line}`);
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const includes = rules.filter(line => /^!/.test(line)).map(line => `**/node_modules/${line.substr(1)}`);
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const input = es.through();
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const output = es.merge(
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input.pipe(_filter(['**', ...excludes])),
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input.pipe(_filter(includes))
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);
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return es.duplex(input, output);
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}
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declare class FileSourceMap extends VinylFile {
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public sourceMap: sm.RawSourceMap;
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}
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export function loadSourcemaps(): NodeJS.ReadWriteStream {
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const input = es.through();
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const output = input
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.pipe(es.map<FileSourceMap, FileSourceMap | undefined>((f, cb): FileSourceMap | undefined => {
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if (f.sourceMap) {
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cb(undefined, f);
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return;
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}
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if (!f.contents) {
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cb(undefined, f);
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return;
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}
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const contents = (<Buffer>f.contents).toString('utf8');
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const reg = /\/\/# sourceMappingURL=(.*)$/g;
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let lastMatch: RegExpExecArray | null = null;
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let match: RegExpExecArray | null = null;
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while (match = reg.exec(contents)) {
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lastMatch = match;
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}
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if (!lastMatch) {
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f.sourceMap = {
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version: '3',
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names: [],
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mappings: '',
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sources: [f.relative.replace(/\\/g, '/')],
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sourcesContent: [contents]
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};
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cb(undefined, f);
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return;
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}
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f.contents = Buffer.from(contents.replace(/\/\/# sourceMappingURL=(.*)$/g, ''), 'utf8');
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fs.readFile(path.join(path.dirname(f.path), lastMatch[1]), 'utf8', (err, contents) => {
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if (err) { return cb(err); }
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f.sourceMap = JSON.parse(contents);
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cb(undefined, f);
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});
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}));
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return es.duplex(input, output);
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}
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export function stripSourceMappingURL(): NodeJS.ReadWriteStream {
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const input = es.through();
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const output = input
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.pipe(es.mapSync<VinylFile, VinylFile>(f => {
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const contents = (<Buffer>f.contents).toString('utf8');
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f.contents = Buffer.from(contents.replace(/\n\/\/# sourceMappingURL=(.*)$/gm, ''), 'utf8');
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return f;
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}));
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return es.duplex(input, output);
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}
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/** Splits items in the stream based on the predicate, sending them to onTrue if true, or onFalse otherwise */
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export function $if(test: boolean | ((f: VinylFile) => boolean), onTrue: NodeJS.ReadWriteStream, onFalse: NodeJS.ReadWriteStream = es.through()) {
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if (typeof test === 'boolean') {
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return test ? onTrue : onFalse;
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}
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return ternaryStream(test, onTrue, onFalse);
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}
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/** Operator that appends the js files' original path a sourceURL, so debug locations map */
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export function appendOwnPathSourceURL(): NodeJS.ReadWriteStream {
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const input = es.through();
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const output = input
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.pipe(es.mapSync<VinylFile, VinylFile>(f => {
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if (!(f.contents instanceof Buffer)) {
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throw new Error(`contents of ${f.path} are not a buffer`);
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}
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f.contents = Buffer.concat([f.contents, Buffer.from(`\n//# sourceURL=${pathToFileURL(f.path)}`)]);
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return f;
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}));
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return es.duplex(input, output);
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}
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export function rewriteSourceMappingURL(sourceMappingURLBase: string): NodeJS.ReadWriteStream {
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const input = es.through();
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const output = input
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.pipe(es.mapSync<VinylFile, VinylFile>(f => {
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const contents = (<Buffer>f.contents).toString('utf8');
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const str = `//# sourceMappingURL=${sourceMappingURLBase}/${path.dirname(f.relative).replace(/\\/g, '/')}/$1`;
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f.contents = Buffer.from(contents.replace(/\n\/\/# sourceMappingURL=(.*)$/gm, str));
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return f;
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}));
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return es.duplex(input, output);
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}
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export function rimraf(dir: string): () => Promise<void> {
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const result = () => new Promise<void>((c, e) => {
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let retries = 0;
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const retry = () => {
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_rimraf(dir, { maxBusyTries: 1 }, (err: any) => {
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if (!err) {
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return c();
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}
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if (err.code === 'ENOTEMPTY' && ++retries < 5) {
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return setTimeout(() => retry(), 10);
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}
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return e(err);
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});
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};
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retry();
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});
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result.taskName = `clean-${path.basename(dir).toLowerCase()}`;
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return result;
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}
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function _rreaddir(dirPath: string, prepend: string, result: string[]): void {
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const entries = fs.readdirSync(dirPath, { withFileTypes: true });
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for (const entry of entries) {
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if (entry.isDirectory()) {
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_rreaddir(path.join(dirPath, entry.name), `${prepend}/${entry.name}`, result);
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} else {
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result.push(`${prepend}/${entry.name}`);
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}
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}
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}
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export function rreddir(dirPath: string): string[] {
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const result: string[] = [];
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_rreaddir(dirPath, '', result);
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return result;
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}
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export function ensureDir(dirPath: string): void {
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if (fs.existsSync(dirPath)) {
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return;
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}
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ensureDir(path.dirname(dirPath));
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fs.mkdirSync(dirPath);
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}
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export function rebase(count: number): NodeJS.ReadWriteStream {
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return rename(f => {
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const parts = f.dirname ? f.dirname.split(/[\/\\]/) : [];
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f.dirname = parts.slice(count).join(path.sep);
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});
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}
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export interface FilterStream extends NodeJS.ReadWriteStream {
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restore: ThroughStream;
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}
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export function filter(fn: (data: any) => boolean): FilterStream {
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const result = <FilterStream><any>es.through(function (data) {
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if (fn(data)) {
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this.emit('data', data);
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} else {
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result.restore.push(data);
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}
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});
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result.restore = es.through();
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return result;
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}
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export function streamToPromise(stream: NodeJS.ReadWriteStream): Promise<void> {
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return new Promise((c, e) => {
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stream.on('error', err => e(err));
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stream.on('end', () => c());
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});
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}
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export function getElectronVersion(): Record<string, string> {
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const npmrc = fs.readFileSync(path.join(root, '.npmrc'), 'utf8');
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const electronVersion = /^target="(.*)"$/m.exec(npmrc)![1];
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const msBuildId = /^ms_build_id="(.*)"$/m.exec(npmrc)![1];
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return { electronVersion, msBuildId };
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}
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