Squashed 'lib/vscode/' content from commit e5a624b788

git-subtree-dir: lib/vscode
git-subtree-split: e5a624b788d92b8d34d1392e4c4d9789406efe8f

build/lib/watch/watch-win32.ts

@@ -0,0 +1,108 @@
+/*---------------------------------------------------------------------------------------------
+ *  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);
+};