Allow suppressing message extraction warnings, providing a prefix for generated files, and format w…

pkg/intl/lib/generate_localized.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.
 
 /**
  * This provides utilities for generating localized versions of
  * messages. It does not stand alone, but expects to be given
  * TranslatedMessage objects and generate code for a particular locale
  * based on them.
  *
@@ skipping 29 matching lines @@
 String importForGeneratedFile(String file) =>
     generatedImportPath.isEmpty ? file : "$generatedImportPath/$file";
 
 /**
  * A list of all the locales for which we have translations. Code that does
  * the reading of translations should add to this.
  */
 List<String> allLocales = [];
 
 /**
+ * If we have more than one set of messages to generate in a particular
+ * directory we may want to prefix some to distinguish them.
+ */
+String generatedFilePrefix = '';
+
+/**
  * This represents a message and its translation. We assume that the translation
  * has some identifier that allows us to figure out the original message it
  * corresponds to, and that it may want to transform the translated text in
  * some way, e.g. to turn whatever format the translation uses for variables
  * into a Dart string interpolation. Specific translation
  * mechanisms are expected to subclass this.
  */
 abstract class TranslatedMessage {
   /** The identifier for this message. In the simplest case, this is the name.*/
   var id;
@@ skipping 34 matching lines @@
     result.write(each.originalMessage.toCode(locale));
     result.write("\n\n");
   }
   result.write("\n  final messages = const {\n");
   var entries = sorted
       .map((translation) => translation.originalMessage.name)
       .map((name) => "    \"$name\" : $name");
   result.write(entries.join(",\n"));
   result.write("\n  };\n}");
 
-  var output = new File(path.join(targetDir, "messages_$locale.dart"));
+  var output = new File(path.join(targetDir,
+      "${generatedFilePrefix}messages_$locale.dart"));
   output.writeAsStringSync(result.toString());
 }
 
 /**
- * This returns the mostly constant string used in [generated] for the
- * beginning of the file, parameterized by [locale].
+ * This returns the mostly constant string used in
+ * [generateIndividualMessageFile] for the beginning of the file,
+ * parameterized by [locale].
  */
 String prologue(String locale) => """
 /**
  * DO NOT EDIT. This is code generated via pkg/intl/generate_localized.dart
  * This is a library that provides messages for a $locale locale. All the
  * messages from the main program should be duplicated here with the same
  * function name.
  */
 
 library messages_${locale.replaceAll('-','_')};
 import 'package:$intlImportPath/intl.dart';
 import 'package:$intlImportPath/message_lookup_by_library.dart';
 
 final messages = new MessageLookup();
 
 class MessageLookup extends MessageLookupByLibrary {
 
   get localeName => '$locale';
 """;
 
 /**
  * This section generates the messages_all.dart file based on the list of
  * [allLocales].
  */
 String generateMainImportFile() {
   var output = new StringBuffer();
   output.write(mainPrologue);
   for (var each in allLocales) {
-    var baseFile = 'messages_$each.dart';
+    var baseFile = '${generatedFilePrefix}messages_$each.dart';
     var file = importForGeneratedFile(baseFile);
     output.write("import '$file' as ${asLibraryName(each)};\n");
   }
   output.write(
     "\nMessageLookupByLibrary _findExact(localeName) {\n"
     "  switch (localeName) {\n");
   for (var each in allLocales) {
     output.write(
         "    case '$each' : return ${asLibraryName(each)}.messages;\n");
   }
@@ skipping 15 matching lines @@
 library messages_all;
 
 import 'dart:async';
 import 'package:$intlImportPath/message_lookup_by_library.dart';
 import 'package:$intlImportPath/src/intl_helpers.dart';
 import 'package:$intlImportPath/intl.dart';
 
 """;
 
 /**
- * Constant string used in [generateMainImportfile] as the end of the file.
+ * Constant string used in [generateMainImportFile] as the end of the file.
  */
 const closing = """
     default: return null;
   }
 }
 
 /** User programs should call this before using [localeName] for messages.*/
 initializeMessages(localeName) {
   initializeInternalMessageLookup(() => new CompositeMessageLookup());
   messageLookup.addLocale(localeName, _findGeneratedMessagesFor);
   return new Future.value();
 }
 
 MessageLookupByLibrary _findGeneratedMessagesFor(locale) {
   var actualLocale = Intl.verifiedLocale(locale, (x) => _findExact(x) != null);
   if (actualLocale == null) return null;
   return _findExact(actualLocale);
 }
 """;