code-server/lib/vscode/build/lib/util.ts
2020-12-15 15:53:52 -07:00

344 lines
8.7 KiB
TypeScript

/*---------------------------------------------------------------------------------------------
* Copyright (c) Microsoft Corporation. All rights reserved.
* Licensed under the MIT License. See License.txt in the project root for license information.
*--------------------------------------------------------------------------------------------*/
'use strict';
import * as es from 'event-stream';
import debounce = require('debounce');
import * as _filter from 'gulp-filter';
import * as rename from 'gulp-rename';
import * as _ from 'underscore';
import * as path from 'path';
import * as fs from 'fs';
import * as _rimraf from 'rimraf';
import * as git from './git';
import * as VinylFile from 'vinyl';
import { ThroughStream } from 'through';
import * as sm from 'source-map';
const root = path.dirname(path.dirname(__dirname));
export interface ICancellationToken {
isCancellationRequested(): boolean;
}
const NoCancellationToken: ICancellationToken = { isCancellationRequested: () => false };
export interface IStreamProvider {
(cancellationToken?: ICancellationToken): NodeJS.ReadWriteStream;
}
export function incremental(streamProvider: IStreamProvider, initial: NodeJS.ReadWriteStream, supportsCancellation?: boolean): NodeJS.ReadWriteStream {
const input = es.through();
const output = es.through();
let state = 'idle';
let buffer = Object.create(null);
const token: ICancellationToken | undefined = !supportsCancellation ? undefined : { isCancellationRequested: () => Object.keys(buffer).length > 0 };
const run = (input: NodeJS.ReadWriteStream, isCancellable: boolean) => {
state = 'running';
const stream = !supportsCancellation ? streamProvider() : streamProvider(isCancellable ? token : NoCancellationToken);
input
.pipe(stream)
.pipe(es.through(undefined, () => {
state = 'idle';
eventuallyRun();
}))
.pipe(output);
};
if (initial) {
run(initial, false);
}
const eventuallyRun = debounce(() => {
const paths = Object.keys(buffer);
if (paths.length === 0) {
return;
}
const data = paths.map(path => buffer[path]);
buffer = Object.create(null);
run(es.readArray(data), true);
}, 500);
input.on('data', (f: any) => {
buffer[f.path] = f;
if (state === 'idle') {
eventuallyRun();
}
});
return es.duplex(input, output);
}
export function fixWin32DirectoryPermissions(): NodeJS.ReadWriteStream {
if (!/win32/.test(process.platform)) {
return es.through();
}
return es.mapSync<VinylFile, VinylFile>(f => {
if (f.stat && f.stat.isDirectory && f.stat.isDirectory()) {
f.stat.mode = 16877;
}
return f;
});
}
export function setExecutableBit(pattern?: string | string[]): NodeJS.ReadWriteStream {
const setBit = es.mapSync<VinylFile, VinylFile>(f => {
if (!f.stat) {
f.stat = { isFile() { return true; } } as any;
}
f.stat.mode = /* 100755 */ 33261;
return f;
});
if (!pattern) {
return setBit;
}
const input = es.through();
const filter = _filter(pattern, { restore: true });
const output = input
.pipe(filter)
.pipe(setBit)
.pipe(filter.restore);
return es.duplex(input, output);
}
export function toFileUri(filePath: string): string {
const match = filePath.match(/^([a-z])\:(.*)$/i);
if (match) {
filePath = '/' + match[1].toUpperCase() + ':' + match[2];
}
return 'file://' + filePath.replace(/\\/g, '/');
}
export function skipDirectories(): NodeJS.ReadWriteStream {
return es.mapSync<VinylFile, VinylFile | undefined>(f => {
if (!f.isDirectory()) {
return f;
}
});
}
export function cleanNodeModules(rulePath: string): NodeJS.ReadWriteStream {
const rules = fs.readFileSync(rulePath, 'utf8')
.split(/\r?\n/g)
.map(line => line.trim())
.filter(line => line && !/^#/.test(line));
const excludes = rules.filter(line => !/^!/.test(line)).map(line => `!**/node_modules/${line}`);
const includes = rules.filter(line => /^!/.test(line)).map(line => `**/node_modules/${line.substr(1)}`);
const input = es.through();
const output = es.merge(
input.pipe(_filter(['**', ...excludes])),
input.pipe(_filter(includes))
);
return es.duplex(input, output);
}
declare class FileSourceMap extends VinylFile {
public sourceMap: sm.RawSourceMap;
}
export function loadSourcemaps(): NodeJS.ReadWriteStream {
const input = es.through();
const output = input
.pipe(es.map<FileSourceMap, FileSourceMap | undefined>((f, cb): FileSourceMap | undefined => {
if (f.sourceMap) {
cb(undefined, f);
return;
}
if (!f.contents) {
cb(undefined, f);
return;
}
const contents = (<Buffer>f.contents).toString('utf8');
const reg = /\/\/# sourceMappingURL=(.*)$/g;
let lastMatch: RegExpMatchArray | null = null;
let match: RegExpMatchArray | null = null;
while (match = reg.exec(contents)) {
lastMatch = match;
}
if (!lastMatch) {
f.sourceMap = {
version: '3',
names: [],
mappings: '',
sources: [f.relative],
sourcesContent: [contents]
};
cb(undefined, f);
return;
}
f.contents = Buffer.from(contents.replace(/\/\/# sourceMappingURL=(.*)$/g, ''), 'utf8');
fs.readFile(path.join(path.dirname(f.path), lastMatch[1]), 'utf8', (err, contents) => {
if (err) { return cb(err); }
f.sourceMap = JSON.parse(contents);
cb(undefined, f);
});
}));
return es.duplex(input, output);
}
export function stripSourceMappingURL(): NodeJS.ReadWriteStream {
const input = es.through();
const output = input
.pipe(es.mapSync<VinylFile, VinylFile>(f => {
const contents = (<Buffer>f.contents).toString('utf8');
f.contents = Buffer.from(contents.replace(/\n\/\/# sourceMappingURL=(.*)$/gm, ''), 'utf8');
return f;
}));
return es.duplex(input, output);
}
export function rewriteSourceMappingURL(sourceMappingURLBase: string): NodeJS.ReadWriteStream {
const input = es.through();
const output = input
.pipe(es.mapSync<VinylFile, VinylFile>(f => {
const contents = (<Buffer>f.contents).toString('utf8');
const str = `//# sourceMappingURL=${sourceMappingURLBase}/${path.dirname(f.relative).replace(/\\/g, '/')}/$1`;
f.contents = Buffer.from(contents.replace(/\n\/\/# sourceMappingURL=(.*)$/gm, str));
return f;
}));
return es.duplex(input, output);
}
export function rimraf(dir: string): () => Promise<void> {
const result = () => new Promise<void>((c, e) => {
let retries = 0;
const retry = () => {
_rimraf(dir, { maxBusyTries: 1 }, (err: any) => {
if (!err) {
return c();
}
if (err.code === 'ENOTEMPTY' && ++retries < 5) {
return setTimeout(() => retry(), 10);
}
return e(err);
});
};
retry();
});
result.taskName = `clean-${path.basename(dir).toLowerCase()}`;
return result;
}
function _rreaddir(dirPath: string, prepend: string, result: string[]): void {
const entries = fs.readdirSync(dirPath, { withFileTypes: true });
for (const entry of entries) {
if (entry.isDirectory()) {
_rreaddir(path.join(dirPath, entry.name), `${prepend}/${entry.name}`, result);
} else {
result.push(`${prepend}/${entry.name}`);
}
}
}
export function rreddir(dirPath: string): string[] {
let result: string[] = [];
_rreaddir(dirPath, '', result);
return result;
}
export function ensureDir(dirPath: string): void {
if (fs.existsSync(dirPath)) {
return;
}
ensureDir(path.dirname(dirPath));
fs.mkdirSync(dirPath);
}
export function getVersion(root: string): string | undefined {
let version = process.env['BUILD_SOURCEVERSION'];
if (!version || !/^[0-9a-f]{40}$/i.test(version)) {
version = git.getVersion(root);
}
return version;
}
export function rebase(count: number): NodeJS.ReadWriteStream {
return rename(f => {
const parts = f.dirname ? f.dirname.split(/[\/\\]/) : [];
f.dirname = parts.slice(count).join(path.sep);
});
}
export interface FilterStream extends NodeJS.ReadWriteStream {
restore: ThroughStream;
}
export function filter(fn: (data: any) => boolean): FilterStream {
const result = <FilterStream><any>es.through(function (data) {
if (fn(data)) {
this.emit('data', data);
} else {
result.restore.push(data);
}
});
result.restore = es.through();
return result;
}
export function versionStringToNumber(versionStr: string) {
const semverRegex = /(\d+)\.(\d+)\.(\d+)/;
const match = versionStr.match(semverRegex);
if (!match) {
throw new Error('Version string is not properly formatted: ' + versionStr);
}
return parseInt(match[1], 10) * 1e4 + parseInt(match[2], 10) * 1e2 + parseInt(match[3], 10);
}
export function streamToPromise(stream: NodeJS.ReadWriteStream): Promise<void> {
return new Promise((c, e) => {
stream.on('error', err => e(err));
stream.on('end', () => c());
});
}
export function getElectronVersion(): string {
return process.versions.node;
const yarnrc = fs.readFileSync(path.join(root, '.yarnrc'), 'utf8');
const target = /^target "(.*)"$/m.exec(yarnrc)![1];
return target;
}