SQL Operations Studio Public Preview 1 (0.23) release source code

build/lib/watch/watch-win32.js

@@ -0,0 +1,108 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the Source EULA. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+var path = require('path');
+var cp = require('child_process');
+var fs = require('fs');
+var File = require('vinyl');
+var es = require('event-stream');
+var filter = require('gulp-filter');
+
+var watcherPath = path.join(__dirname, 'watcher.exe');
+
+function toChangeType(type) {
+	switch (type) {
+		case '0': return 'change';
+		case '1': return 'add';
+		default: return 'unlink';
+	}
+}
+
+function watch(root) {
+	var result = es.through();
+	var child = cp.spawn(watcherPath, [root]);
+
+	child.stdout.on('data', function(data) {
+		var lines = data.toString('utf8').split('\n');
+		for (var i = 0; i < lines.length; i++) {
+			var line = lines[i].trim();
+			if (line.length === 0) {
+				continue;
+			}
+
+			var changeType = line[0];
+			var changePath = line.substr(2);
+
+			// filter as early as possible
+			if (/^\.git/.test(changePath) || /(^|\\)out($|\\)/.test(changePath)) {
+				continue;
+			}
+
+			var changePathFull = path.join(root, changePath);
+
+			var file = new File({
+				path: changePathFull,
+				base: root
+			});
+
+			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 () { child && child.kill(); });
+
+	return result;
+}
+
+var cache = Object.create(null);
+
+module.exports = function(pattern, options) {
+	options = options || {};
+
+	var cwd = path.normalize(options.cwd || process.cwd());
+	var watcher = cache[cwd];
+
+	if (!watcher) {
+		watcher = cache[cwd] = watch(cwd);
+	}
+
+	var rebase = !options.base ? es.through() : es.mapSync(function (f) {
+		f.base = options.base;
+		return f;
+	});
+
+	return watcher
+		.pipe(filter(['**', '!.git{,/**}'])) // ignore all things git
+		.pipe(filter(pattern))
+		.pipe(es.map(function (file, cb) {
+			fs.stat(file.path, function (err, stat) {
+				if (err && err.code === 'ENOENT') { return cb(null, file); }
+				if (err) { return cb(); }
+				if (!stat.isFile()) { return cb(); }
+
+				fs.readFile(file.path, function (err, contents) {
+					if (err && err.code === 'ENOENT') { return cb(null, file); }
+					if (err) { return cb(); }
+
+					file.contents = contents;
+					file.stat = stat;
+					cb(null, file);
+				});
+			});
+		}))
+		.pipe(rebase);
+};