Index: pkg/dart_messages/bin/message_id.dart |
diff --git a/pkg/dart_messages/bin/message_id.dart b/pkg/dart_messages/bin/message_id.dart |
new file mode 100644 |
index 0000000000000000000000000000000000000000..2d7ed5387cfb9c349b1b6f4e82d91fe8384c8eb7 |
--- /dev/null |
+++ b/pkg/dart_messages/bin/message_id.dart |
@@ -0,0 +1,35 @@ |
+// Copyright (c) 2015, 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. |
+ |
+import 'dart:math' as math; |
+ |
+import '../lib/shared_messages.dart' as shared_messages; |
+ |
+math.Random random = new math.Random(); |
+ |
+const idLength = 6; |
+final $A = "A".codeUnitAt(0); |
+final $Z = "Z".codeUnitAt(0); |
+ |
+String computeId() { |
+ List charCodes = []; |
+ for (int i = 0; i < idLength; i++) { |
+ charCodes.add($A + random.nextInt($Z - $A)); |
+ } |
+ return new String.fromCharCodes(charCodes); |
+} |
+ |
+/// Computes a random message ID that hasn't been used before. |
+void main() { |
+ var usedIds = |
+ shared_messages.MESSAGES.values.map((entry) => entry['id']).toSet(); |
+ |
+ print("${usedIds.length} existing ids"); |
+ |
+ var newId; |
+ do { |
+ newId = computeId(); |
+ } while (!usedIds.contains(newId)); |
+ print("Available id: $newId"); |
+} |