Mirror images for RTL languages at build time.

build/android/gyp/process_resources.py

Index: build/android/gyp/process_resources.py
diff --git a/build/android/gyp/process_resources.py b/build/android/gyp/process_resources.py
index bf1317554e798209838650852bce3a8e90fcbea6..48e4b49dfd71a6539e64b406cf6de0ad16b55b7f 100755
--- a/build/android/gyp/process_resources.py
+++ b/build/android/gyp/process_resources.py
@@ -1,6 +1,6 @@
 #!/usr/bin/env python
 #
-# Copyright (c) 2012 The Chromium Authors. All rights reserved.
+# Copyright 2012 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
@@ -10,8 +10,10 @@ import optparse
 import os
 import shlex
 import shutil
+import tempfile
 
 from util import build_utils
+import mirror_images
 
 def ParseArgs():
   """Parses command line options.
@@ -26,10 +28,15 @@ def ParseArgs():
   parser.add_option('--R-dir', help='directory to hold generated R.java')
   parser.add_option('--res-dirs',
                     help='directories containing resources to be packaged')
-  parser.add_option('--crunch-input-dir',
-                    help='directory containing images to be crunched')
+  parser.add_option('--image-input-dir', help='directory containing images to '
+                    'be crunched and possibly mirrored.')
   parser.add_option('--crunch-output-dir',
                     help='directory to hold crunched resources')
+  parser.add_option('--mirror-config', help='config file specifying which '
+                    'images should be mirrored. Images will be mirrored only '
+                    'if this is provided.')
+  parser.add_option('--mirror-output-dir',
+                    help='directory where mirrored images should be saved')
   parser.add_option('--non-constant-id', action='store_true')
   parser.add_option('--custom-package', help='Java package for R.java')
   parser.add_option('--android-manifest', help='AndroidManifest.xml path')
@@ -43,9 +50,13 @@ def ParseArgs():
   if args:
     parser.error('No positional arguments should be given.')
 
+  if (options.mirror_config is None) != (options.mirror_output_dir is None):
+    parser.error('--mirror-config and --mirror-output-dir must both be present '
+                 'or neither present.')
+
   # Check that required options have been provided.
   required_options = ('android_sdk', 'android_sdk_tools', 'R_dir',
-                      'res_dirs', 'crunch_input_dir', 'crunch_output_dir')
+                      'res_dirs', 'image_input_dir', 'crunch_output_dir')
   build_utils.CheckOptions(options, parser, required=required_options)
 
   return options
@@ -77,6 +88,15 @@ def MoveImagesToNonMdpiFolders(res_root):
       shutil.move(src_file, dst_file)
 
 
+def CrunchImages(aapt, input_res_dir, output_res_dir):
+  build_utils.MakeDirectory(output_res_dir)
+  aapt_cmd = [aapt,
+              'crunch',
+              '-S', input_res_dir,
+              '-C', output_res_dir]
+  build_utils.CheckOutput(aapt_cmd, fail_if_stderr=True)
+
+
 def main():
   options = ParseArgs()
   android_jar = os.path.join(options.android_sdk, 'android.jar')
@@ -106,16 +126,22 @@ def main():
     package_command += ['--custom-package', options.custom_package]
   build_utils.CheckOutput(package_command)
 
+  # Mirror images if requested.
+  if options.mirror_config:
+    # Mirrored images are generated into a temp dir. Once these images are
+    # crunched, they'll go in the desired mirror output dir.
+    mirrored_uncrunched_dir = tempfile.mkdtemp()
+    try:
+      mirror_images.main(['--config', options.mirror_config,
+                          '--input-res-dir', options.image_input_dir,
+                          '--output-res-dir', mirrored_uncrunched_dir])
+      CrunchImages(aapt, mirrored_uncrunched_dir, options.mirror_output_dir)
+    finally:
+      shutil.rmtree(mirrored_uncrunched_dir)
+
   # Crunch image resources. This shrinks png files and is necessary for 9-patch
   # images to display correctly.
-  build_utils.MakeDirectory(options.crunch_output_dir)
-  aapt_cmd = [aapt,
-              'crunch',
-              '-S', options.crunch_input_dir,
-              '-C', options.crunch_output_dir]
-  build_utils.CheckOutput(aapt_cmd, fail_if_stderr=True)
-
-  MoveImagesToNonMdpiFolders(options.crunch_output_dir)
+  CrunchImages(aapt, options.image_input_dir, options.crunch_output_dir)
 
   if options.stamp:
     build_utils.Touch(options.stamp)