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#!/usr/bin/env python
#
# Copyright (c) 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.
"""Process Android library resources to generate R.java and crunched images."""
import optparse
import os
import re
import shlex
import shutil
from util import build_utils
def ParseArgs():
"""Parses command line options.
Returns:
An options object as from optparse.OptionsParser.parse_args()
"""
parser = optparse.OptionParser()
parser.add_option('--android-sdk', help='path to the Android SDK folder')
parser.add_option('--android-sdk-tools',
help='path to the Android SDK build tools folder')
parser.add_option('--R-dir', help='directory to hold generated R.java')
parser.add_option('--dependencies-res-dirs',
help='directories containing resources to be packaged')
parser.add_option('--resource-dir',
help='directory containing this target\'s resources.')
parser.add_option('--crunch-output-dir',
help='directory to hold crunched resources')
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')
parser.add_option('--proguard-file',
help='Path to proguard.txt generated file')
parser.add_option('--stamp', help='File to touch on success')
parser.add_option(
'--extra-res-packages',
help='Additional package names to generate R.java files for')
parser.add_option(
'--extra-r-text-files',
help='For each additional package, the R.txt file should contain a '
'list of resources to be included in the R.java file in the format '
'generated by aapt')
(options, args) = parser.parse_args()
if args:
parser.error('No positional arguments should be given.')
# Check that required options have been provided.
required_options = (
'android_sdk',
'android_sdk_tools',
'android_manifest',
'dependencies_res_dirs',
'resource_dir',
'crunch_output_dir',
'R_dir',
)
build_utils.CheckOptions(options, parser, required=required_options)
return options
def CreateExtraRJavaFiles(
r_dir, extra_packages, extra_r_text_files):
if len(extra_packages) != len(extra_r_text_files):
raise Exception('--extra-res-packages and --extra-r-text-files'
'should have the same length')
java_files = build_utils.FindInDirectory(r_dir, "R.java")
if len(java_files) != 1:
return
r_java_file = java_files[0]
r_java_contents = open(r_java_file).read()
for package in extra_packages:
package_r_java_dir = os.path.join(r_dir, *package.split('.'))
build_utils.MakeDirectory(package_r_java_dir)
package_r_java_path = os.path.join(package_r_java_dir, 'R.java')
open(package_r_java_path, 'w').write(
re.sub(r'package [.\w]*;', 'package %s;' % package, r_java_contents))
# TODO(cjhopman): These extra package's R.java files should be filtered to
# only contain the resources listed in their R.txt files. At this point, we
# have already compiled those other libraries, so doing this would only
# affect how the code in this .apk target could refer to the resources.
def MoveImagesToNonMdpiFolders(res_root):
"""Move images from drawable-*-mdpi-* folders to drawable-* folders.
Why? http://crbug.com/289843
"""
for src_dir_name in os.listdir(res_root):
src_components = src_dir_name.split('-')
if src_components[0] != 'drawable' or 'mdpi' not in src_components:
continue
src_dir = os.path.join(res_root, src_dir_name)
if not os.path.isdir(src_dir):
continue
dst_components = [c for c in src_components if c != 'mdpi']
assert dst_components != src_components
dst_dir_name = '-'.join(dst_components)
dst_dir = os.path.join(res_root, dst_dir_name)
build_utils.MakeDirectory(dst_dir)
for src_file_name in os.listdir(src_dir):
if not src_file_name.endswith('.png'):
continue
src_file = os.path.join(src_dir, src_file_name)
dst_file = os.path.join(dst_dir, src_file_name)
assert not os.path.lexists(dst_file)
shutil.move(src_file, dst_file)
def DidCrunchFail(returncode, stderr):
"""Determines whether aapt crunch failed from its return code and output.
Because aapt's return code cannot be trusted, any output to stderr is
an indication that aapt has failed (http://crbug.com/314885), except
lines that contain "libpng warning", which is a known non-error condition
(http://crbug.com/364355).
"""
if returncode != 0:
return True
for line in stderr.splitlines():
if line and not 'libpng warning' in line:
return True
return False
def main():
options = ParseArgs()
android_jar = os.path.join(options.android_sdk, 'android.jar')
aapt = os.path.join(options.android_sdk_tools, 'aapt')
build_utils.DeleteDirectory(options.R_dir)
build_utils.MakeDirectory(options.R_dir)
# Generate R.java. This R.java contains non-final constants and is used only
# while compiling the library jar (e.g. chromium_content.jar). When building
# an apk, a new R.java file with the correct resource -> ID mappings will be
# generated by merging the resources from all libraries and the main apk
# project.
package_command = [aapt,
'package',
'-m',
'-M', options.android_manifest,
'--auto-add-overlay',
'-I', android_jar,
'--output-text-symbols', options.R_dir,
'-J', options.R_dir]
all_res_dirs = ([options.resource_dir]
+ shlex.split(options.dependencies_res_dirs))
for res_dir in all_res_dirs:
package_command += ['-S', res_dir]
if options.non_constant_id:
package_command.append('--non-constant-id')
if options.custom_package:
package_command += ['--custom-package', options.custom_package]
if options.proguard_file:
package_command += ['-G', options.proguard_file]
build_utils.CheckOutput(package_command)
if options.extra_res_packages:
CreateExtraRJavaFiles(
options.R_dir,
build_utils.ParseGypList(options.extra_res_packages),
build_utils.ParseGypList(options.extra_r_text_files))
# Crunch image resources. This shrinks png files and is necessary for 9-patch
# images to display correctly.
build_utils.DeleteDirectory(options.crunch_output_dir)
build_utils.MakeDirectory(options.crunch_output_dir)
aapt_cmd = [aapt,
'crunch',
'-S', options.resource_dir,
'-C', options.crunch_output_dir]
build_utils.CheckOutput(aapt_cmd, fail_func=DidCrunchFail)
MoveImagesToNonMdpiFolders(options.crunch_output_dir)
if options.stamp:
build_utils.Touch(options.stamp)
if __name__ == '__main__':
main()
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