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1#!/usr/bin/env python
2# Copyright (c) 2012 The Chromium Authors. All rights reserved.
3# Use of this source code is governed by a BSD-style license that can be
4# found in the LICENSE file.
5
6"""Formats as a .js file using a map: <english text> -> <localized text>.
7"""
8
9import re
10
11from grit import util
12
13
14"""The required preamble for JS files."""
15_HEADER = '// This file is automatically generated by GRIT.  Do not edit.\n'
16
17
18def Format(root, lang='en', output_dir='.'):
19  from grit.node import empty, message
20  yield _HEADER
21  for item in root.ActiveDescendants():
22    with item:
23      if isinstance(item, message.MessageNode):
24        yield _FormatMessage(item, lang)
25      elif isinstance(item, empty.MessagesNode):
26        yield '\n'
27
28
29def _FormatMessage(item, lang):
30  """Format a single message."""
31
32  en_message = item.ws_at_start + item.Translate('en') + item.ws_at_end
33  # Remove position numbers from placeholders.
34  en_message = re.sub(r'%\d\$([a-z])', r'%\1', en_message)
35  # Escape double quotes.
36  en_message = re.sub(r'\\', r'\\\\', en_message)
37  en_message = re.sub(r'"', r'\"', en_message)
38
39  loc_message = item.ws_at_start + item.Translate(lang) + item.ws_at_end
40  # Escape double quotes.
41  loc_message = re.sub(r'\\', r'\\\\', loc_message)
42  loc_message = re.sub(r'"', r'\"', loc_message)
43
44  return '\nlocalizedStrings["%s"] = "%s";' % (en_message, loc_message)
45