Updated message formatting to be more compatible with Dart string interpolation.

lib/i18n/intl.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.
+ *
+ */
+
+#library('Intl');
+#import('date_format.dart');
+#import('message_format.dart');
+
+class Intl {
+
+  /**
+   * As yet not clearly defined variable for holding onto our current locale,
+   * which may actually be a list of locales, or have different information
+   * for different aspects of internationalization (e.g. German locale but with
+   * Canadian date format)
+   */
+  // TODO (alanknight): Actually make this class do something with locales,
+  // just a skeleton right now.
+  var _locale;
+
+  /**
+   * Constructor
+   */
+  Intl([this._locale]);
+
+  /**
+   * Methods to return appropriate format objects.
+   */
+  DateFormat date() => new DateFormat.fullDate();
+  DateFormat time() => new DateFormat.fullTime();
+  DateFormat dateTime() => new DateFormat.fullDateTime();
+  MessageFormat message() => new MessageFormat();
+
+  /**
+   * Support methods for message formatting.
+   */
+  String plural(num howMany, Map actions) {
+    var desiredKey = howMany.toString();
+    for (var key in actions.getKeys()) {
+        if(desiredKey == key) return actions[key];
+    }
+    if (actions.containsKey('other')) {
+      return actions['other'];
+    } else {
+      return '';
+    }
+  }
+
+  String select(String choice, Map actions) {
+    for (var key in actions.getKeys()) {
+      if (choice == key) return actions[key];
+    }
+    return '';
+  }
+}