Template parser

utils/lib/file_system_vm.dart

+// Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+// TODO(terry): Investigate common library for file I/O shared between frog and tools.
+
+#library('file_system_vm');
+#import('dart:io');
+#import('file_system.dart');
+#import('dart:utf');
+
+/** File system implementation using the vm api's. */
+class VMFileSystem implements FileSystem {
+  void writeString(String path, String text) {
+    var file = new File(path).openSync(FileMode.WRITE);
+    file.writeStringSync(text);
+    file.closeSync();
+  }
+
+  String readAll(String filename) {
+    var file = (new File(filename)).openSync();
+    var length = file.lengthSync();
+    var buffer = new List<int>(length);
+    var bytes = file.readListSync(buffer, 0, length);
+    file.closeSync();
+    return new String.fromCharCodes(new Utf8Decoder(buffer).decodeRest());
+  }
+
+  bool fileExists(String filename) {
+    return new File(filename).existsSync();
+  }
+
+  void createDirectory(String path, [bool recursive = false]) {
+    // TODO(rnystrom): Implement.
+    throw 'createDirectory() is not implemented by VMFileSystem yet.';
+  }
+
+  void removeDirectory(String path, [bool recursive = false]) {
+    // TODO(rnystrom): Implement.
+    throw 'removeDirectory() is not implemented by VMFileSystem yet.';
+  }
+}