Update charted to 0.4.8 and roll

packages/intl/bin/generate_from_arb.dart

-#!/usr/bin/env dart
-// Copyright (c) 2013, 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.
-
-/**
- * A main program that takes as input a source Dart file and a number
- * of ARB files representing translations of messages from the corresponding
- * Dart file. See extract_to_arb.dart and make_hardcoded_translation.dart.
- *
- * This produces a series of files named
- * "messages_<locale>.dart" containing messages for a particular locale
- * and a main import file named "messages_all.dart" which has imports all of
- * them and provides an initializeMessages function.
- */
-library generate_from_arb;
-
-import 'dart:convert';
-import 'dart:io';
-import 'package:intl/extract_messages.dart';
-import 'package:intl/src/icu_parser.dart';
-import 'package:intl/src/intl_message.dart';
-import 'package:intl/generate_localized.dart';
-import 'package:path/path.dart' as path;
-import 'package:args/args.dart';
-
-/**
- * Keeps track of all the messages we have processed so far, keyed by message
- * name.
- */
-Map<String, List<MainMessage>> messages;
-
-main(List<String> args) {
-  var targetDir;
-  var parser = new ArgParser();
-  parser.addFlag("suppress-warnings",
-      defaultsTo: false,
-      callback: (x) => suppressWarnings = x,
-      help: 'Suppress printing of warnings.');
-  parser.addOption("output-dir",
-      defaultsTo: '.',
-      callback: (x) => targetDir = x,
-      help: 'Specify the output directory.');
-  parser.addOption("generated-file-prefix",
-      defaultsTo: '',
-      callback: (x) => generatedFilePrefix = x,
-      help: 'Specify a prefix to be used for the generated file names.');
-  parser.addFlag("use-deferred-loading",
-      defaultsTo: true,
-      callback: (x) => useDeferredLoading = x,
-      help: 'Generate message code that must be loaded with deferred loading. '
-      'Otherwise, all messages are eagerly loaded.');
-  parser.parse(args);
-  var dartFiles = args.where((x) => x.endsWith("dart")).toList();
-  var jsonFiles = args.where((x) => x.endsWith(".arb")).toList();
-  if (dartFiles.length == 0 || jsonFiles.length == 0) {
-    print('Usage: generate_from_arb [options]'
-        ' file1.dart file2.dart ...'
-        ' translation1_<languageTag>.arb translation2.arb ...');
-    print(parser.usage);
-    exit(0);
-  }
-
-  // We're re-parsing the original files to find the corresponding messages,
-  // so if there are warnings extracting the messages, suppress them.
-  suppressWarnings = true;
-  var allMessages = dartFiles.map((each) => parseFile(new File(each)));
-
-  messages = new Map();
-  for (var eachMap in allMessages) {
-    eachMap.forEach(
-        (key, value) => messages.putIfAbsent(key, () => []).add(value));
-  }
-  for (var arg in jsonFiles) {
-    var file = new File(arg);
-    generateLocaleFile(file, targetDir);
-  }
-
-  var mainImportFile =
-      new File(path.join(targetDir, '${generatedFilePrefix}messages_all.dart'));
-  mainImportFile.writeAsStringSync(generateMainImportFile());
-}
-
-/**
- * Create the file of generated code for a particular locale. We read the ARB
- * data and create [BasicTranslatedMessage] instances from everything,
- * excluding only the special _locale attribute that we use to indicate the
- * locale. If that attribute is missing, we try to get the locale from the last
- * section of the file name.
- */
-void generateLocaleFile(File file, String targetDir) {
-  var src = file.readAsStringSync();
-  var data = JSON.decode(src);
-  data.forEach((k, v) => data[k] = recreateIntlObjects(k, v));
-  var locale = data["_locale"];
-  if (locale != null) {
-    locale = locale.translated.string;
-  } else {
-    // Get the locale from the end of the file name. This assumes that the file
-    // name doesn't contain any underscores except to begin the language tag
-    // and to separate language from country. Otherwise we can't tell if
-    // my_file_fr.arb is locale "fr" or "file_fr".
-    var name = path.basenameWithoutExtension(file.path);
-    locale = name.split("_").skip(1).join("_");
-  }
-  allLocales.add(locale);
-
-  var translations = [];
-  data.forEach((key, value) {
-    if (value != null) {
-      translations.add(value);
-    }
-  });
-  generateIndividualMessageFile(locale, translations, targetDir);
-}
-
-/**
- * Regenerate the original IntlMessage objects from the given [data]. For
- * things that are messages, we expect [id] not to start with "@" and
- * [data] to be a String. For metadata we expect [id] to start with "@"
- * and [data] to be a Map or null. For metadata we return null.
- */
-BasicTranslatedMessage recreateIntlObjects(String id, data) {
-  if (id.startsWith("@")) return null;
-  if (data == null) return null;
-  var parsed = pluralAndGenderParser.parse(data).value;
-  if (parsed is LiteralString && parsed.string.isEmpty) {
-    parsed = plainParser.parse(data).value;
-    ;
-  }
-  return new BasicTranslatedMessage(id, parsed);
-}
-
-/**
- * A TranslatedMessage that just uses the name as the id and knows how to look
- * up its original messages in our [messages].
- */
-class BasicTranslatedMessage extends TranslatedMessage {
-  BasicTranslatedMessage(String name, translated) : super(name, translated);
-
-  List<MainMessage> get originalMessages => (super.originalMessages == null)
-      ? _findOriginals()
-      : super.originalMessages;
-
-  // We know that our [id] is the name of the message, which is used as the
-  //key in [messages].
-  List<MainMessage> _findOriginals() => originalMessages = messages[id];
-}
-
-final pluralAndGenderParser = new IcuParser().message;
-final plainParser = new IcuParser().nonIcuMessage;