process_resources.py revision d0247b1b59f9c528cb6df88b4f2b9afaf80d181e 
1#!/usr/bin/env python
2#
3# Copyright (c) 2012 The Chromium Authors. All rights reserved.
4# Use of this source code is governed by a BSD-style license that can be
5# found in the LICENSE file.
6
7"""Process Android library resources to generate R.java and crunched images."""
8
9import optparse
10import os
11import shlex
12import shutil
13
14from util import build_utils
15
16def ParseArgs():
17  """Parses command line options.
18
19  Returns:
20    An options object as from optparse.OptionsParser.parse_args()
21  """
22  parser = optparse.OptionParser()
23  parser.add_option('--android-sdk', help='path to the Android SDK folder')
24  parser.add_option('--android-sdk-tools',
25                    help='path to the Android SDK build tools folder')
26  parser.add_option('--R-dir', help='directory to hold generated R.java')
27  parser.add_option('--res-dirs',
28                    help='directories containing resources to be packaged')
29  parser.add_option('--crunch-input-dir',
30                    help='directory containing images to be crunched')
31  parser.add_option('--crunch-output-dir',
32                    help='directory to hold crunched resources')
33  parser.add_option('--non-constant-id', action='store_true')
34  parser.add_option('--custom-package', help='Java package for R.java')
35  parser.add_option('--android-manifest', help='AndroidManifest.xml path')
36  parser.add_option('--stamp', help='File to touch on success')
37
38  # This is part of a temporary fix for crbug.com/177552.
39  # TODO(newt): remove this once crbug.com/177552 is fixed in ninja.
40  parser.add_option('--ignore', help='this argument is ignored')
41  (options, args) = parser.parse_args()
42
43  if args:
44    parser.error('No positional arguments should be given.')
45
46  # Check that required options have been provided.
47  required_options = ('android_sdk', 'android_sdk_tools', 'R_dir',
48                      'res_dirs', 'crunch_input_dir', 'crunch_output_dir')
49  build_utils.CheckOptions(options, parser, required=required_options)
50
51  return options
52
53
54def MoveImagesToNonMdpiFolders(res_root):
55  """Move images from drawable-*-mdpi-* folders to drawable-* folders.
56
57  Why? http://crbug.com/289843
58  """
59  for src_dir_name in os.listdir(res_root):
60    src_components = src_dir_name.split('-')
61    if src_components[0] != 'drawable' or 'mdpi' not in src_components:
62      continue
63    src_dir = os.path.join(res_root, src_dir_name)
64    if not os.path.isdir(src_dir):
65      continue
66    dst_components = [c for c in src_components if c != 'mdpi']
67    assert dst_components != src_components
68    dst_dir_name = '-'.join(dst_components)
69    dst_dir = os.path.join(res_root, dst_dir_name)
70    build_utils.MakeDirectory(dst_dir)
71    for src_file_name in os.listdir(src_dir):
72      if not src_file_name.endswith('.png'):
73        continue
74      src_file = os.path.join(src_dir, src_file_name)
75      dst_file = os.path.join(dst_dir, src_file_name)
76      assert not os.path.lexists(dst_file)
77      shutil.move(src_file, dst_file)
78
79
80def main():
81  options = ParseArgs()
82  android_jar = os.path.join(options.android_sdk, 'android.jar')
83  aapt = os.path.join(options.android_sdk_tools, 'aapt')
84
85  build_utils.MakeDirectory(options.R_dir)
86
87  # Generate R.java. This R.java contains non-final constants and is used only
88  # while compiling the library jar (e.g. chromium_content.jar). When building
89  # an apk, a new R.java file with the correct resource -> ID mappings will be
90  # generated by merging the resources from all libraries and the main apk
91  # project.
92  package_command = [aapt,
93                     'package',
94                     '-m',
95                     '-M', options.android_manifest,
96                     '--auto-add-overlay',
97                     '-I', android_jar,
98                     '--output-text-symbols', options.R_dir,
99                     '-J', options.R_dir]
100  res_dirs = shlex.split(options.res_dirs)
101  for res_dir in res_dirs:
102    package_command += ['-S', res_dir]
103  if options.non_constant_id:
104    package_command.append('--non-constant-id')
105  if options.custom_package:
106    package_command += ['--custom-package', options.custom_package]
107  build_utils.CheckCallDie(package_command)
108
109  # Crunch image resources. This shrinks png files and is necessary for 9-patch
110  # images to display correctly.
111  build_utils.MakeDirectory(options.crunch_output_dir)
112  aapt_cmd = [aapt,
113              'crunch',
114              '-S', options.crunch_input_dir,
115              '-C', options.crunch_output_dir]
116  build_utils.CheckCallDie(aapt_cmd, suppress_output=True)
117
118  MoveImagesToNonMdpiFolders(options.crunch_output_dir)
119
120  if options.stamp:
121    build_utils.Touch(options.stamp)
122
123
124if __name__ == '__main__':
125  main()
126