109 lines
3.1 KiB
TypeScript
109 lines
3.1 KiB
TypeScript
/*---------------------------------------------------------------------------------------------
|
|
* Copyright (c) Microsoft Corporation. All rights reserved.
|
|
* Licensed under the MIT License. See License.txt in the project root for license information.
|
|
*--------------------------------------------------------------------------------------------*/
|
|
|
|
import * as path from 'path';
|
|
import * as cp from 'child_process';
|
|
import * as fs from 'fs';
|
|
import * as File from 'vinyl';
|
|
import * as es from 'event-stream';
|
|
import * as filter from 'gulp-filter';
|
|
import { Stream } from 'stream';
|
|
|
|
const watcherPath = path.join(__dirname, 'watcher.exe');
|
|
|
|
function toChangeType(type: '0' | '1' | '2'): 'change' | 'add' | 'unlink' {
|
|
switch (type) {
|
|
case '0': return 'change';
|
|
case '1': return 'add';
|
|
default: return 'unlink';
|
|
}
|
|
}
|
|
|
|
function watch(root: string): Stream {
|
|
const result = es.through();
|
|
let child: cp.ChildProcess | null = cp.spawn(watcherPath, [root]);
|
|
|
|
child.stdout.on('data', function (data) {
|
|
const lines: string[] = data.toString('utf8').split('\n');
|
|
for (let i = 0; i < lines.length; i++) {
|
|
const line = lines[i].trim();
|
|
if (line.length === 0) {
|
|
continue;
|
|
}
|
|
|
|
const changeType = <'0' | '1' | '2'>line[0];
|
|
const changePath = line.substr(2);
|
|
|
|
// filter as early as possible
|
|
if (/^\.git/.test(changePath) || /(^|\\)out($|\\)/.test(changePath)) {
|
|
continue;
|
|
}
|
|
|
|
const changePathFull = path.join(root, changePath);
|
|
|
|
const file = new File({
|
|
path: changePathFull,
|
|
base: root
|
|
});
|
|
(<any>file).event = toChangeType(changeType);
|
|
result.emit('data', file);
|
|
}
|
|
});
|
|
|
|
child.stderr.on('data', function (data) {
|
|
result.emit('error', data);
|
|
});
|
|
|
|
child.on('exit', function (code) {
|
|
result.emit('error', 'Watcher died with code ' + code);
|
|
child = null;
|
|
});
|
|
|
|
process.once('SIGTERM', function () { process.exit(0); });
|
|
process.once('SIGTERM', function () { process.exit(0); });
|
|
process.once('exit', function () { if (child) { child.kill(); } });
|
|
|
|
return result;
|
|
}
|
|
|
|
const cache: { [cwd: string]: Stream; } = Object.create(null);
|
|
|
|
module.exports = function (pattern: string | string[] | filter.FileFunction, options?: { cwd?: string; base?: string; }) {
|
|
options = options || {};
|
|
|
|
const cwd = path.normalize(options.cwd || process.cwd());
|
|
let watcher = cache[cwd];
|
|
|
|
if (!watcher) {
|
|
watcher = cache[cwd] = watch(cwd);
|
|
}
|
|
|
|
const rebase = !options.base ? es.through() : es.mapSync(function (f: File) {
|
|
f.base = options!.base!;
|
|
return f;
|
|
});
|
|
|
|
return watcher
|
|
.pipe(filter(['**', '!.git{,/**}'])) // ignore all things git
|
|
.pipe(filter(pattern))
|
|
.pipe(es.map(function (file: File, cb) {
|
|
fs.stat(file.path, function (err, stat) {
|
|
if (err && err.code === 'ENOENT') { return cb(undefined, file); }
|
|
if (err) { return cb(); }
|
|
if (!stat.isFile()) { return cb(); }
|
|
|
|
fs.readFile(file.path, function (err, contents) {
|
|
if (err && err.code === 'ENOENT') { return cb(undefined, file); }
|
|
if (err) { return cb(); }
|
|
|
|
file.contents = contents;
|
|
file.stat = stat;
|
|
cb(undefined, file);
|
|
});
|
|
});
|
|
}))
|
|
.pipe(rebase);
|
|
};
|