Add a snapshot of flutter/engine/src/build to our sdk

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
new file mode 100755
index 0000000000000000000000000000000000000000..d227954ae96af22f748c6ab35b16780a5e1fa522
--- /dev/null
+++ b/build/android/gyp/process_resources.py
@@ -0,0 +1,420 @@
+#!/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 resources to generate R.java, and prepare for packaging.
+
+This will crunch images and generate v14 compatible resources
+(see generate_v14_compatible_resources.py).
+"""
+
+import codecs
+import optparse
+import os
+import re
+import shutil
+import sys
+import zipfile
+
+import generate_v14_compatible_resources
+
+from util import build_utils
+
+# Import jinja2 from third_party/jinja2
+sys.path.insert(1,
+    os.path.join(os.path.dirname(__file__), '../../../third_party'))
+from jinja2 import Template # pylint: disable=F0401
+
+
+def ParseArgs(args):
+  """Parses command line options.
+
+  Returns:
+    An options object as from optparse.OptionsParser.parse_args()
+  """
+  parser = optparse.OptionParser()
+  build_utils.AddDepfileOption(parser)
+
+  parser.add_option('--android-sdk', help='path to the Android SDK folder')
+  parser.add_option('--aapt-path',
+                    help='path to the Android aapt tool')
+  parser.add_option('--non-constant-id', action='store_true')
+
+  parser.add_option('--android-manifest', help='AndroidManifest.xml path')
+  parser.add_option('--custom-package', help='Java package for R.java')
+  parser.add_option(
+      '--shared-resources',
+      action='store_true',
+      help='Make a resource package that can be loaded by a different'
+      'application at runtime to access the package\'s resources.')
+
+  parser.add_option('--resource-dirs',
+                    help='Directories containing resources of this target.')
+  parser.add_option('--dependencies-res-zips',
+                    help='Resources from dependents.')
+
+  parser.add_option('--resource-zip-out',
+                    help='Path for output zipped resources.')
+
+  parser.add_option('--R-dir',
+                    help='directory to hold generated R.java.')
+  parser.add_option('--srcjar-out',
+                    help='Path to srcjar to contain generated R.java.')
+  parser.add_option('--r-text-out',
+                    help='Path to store the R.txt file generated by appt.')
+
+  parser.add_option('--proguard-file',
+                    help='Path to proguard.txt generated file')
+
+  parser.add_option(
+      '--v14-skip',
+      action="store_true",
+      help='Do not generate nor verify v14 resources')
+
+  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')
+  parser.add_option(
+      '--include-all-resources',
+      action='store_true',
+      help='Include every resource ID in every generated R.java file '
+      '(ignoring R.txt).')
+
+  parser.add_option(
+      '--all-resources-zip-out',
+      help='Path for output of all resources. This includes resources in '
+      'dependencies.')
+
+  parser.add_option('--stamp', help='File to touch on success')
+
+  (options, args) = parser.parse_args(args)
+
+  if args:
+    parser.error('No positional arguments should be given.')
+
+  # Check that required options have been provided.
+  required_options = (
+      'android_sdk',
+      'aapt_path',
+      'android_manifest',
+      'dependencies_res_zips',
+      'resource_dirs',
+      'resource_zip_out',
+      )
+  build_utils.CheckOptions(options, parser, required=required_options)
+
+  if (options.R_dir is None) == (options.srcjar_out is None):
+    raise Exception('Exactly one of --R-dir or --srcjar-out must be specified.')
+
+  return options
+
+
+def CreateExtraRJavaFiles(
+      r_dir, extra_packages, extra_r_text_files, shared_resources, include_all):
+  if include_all:
+    java_files = build_utils.FindInDirectory(r_dir, "R.java")
+    if len(java_files) != 1:
+      return
+    r_java_file = java_files[0]
+    r_java_contents = codecs.open(r_java_file, encoding='utf-8').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')
+      new_r_java = re.sub(r'package [.\w]*;', u'package %s;' % package,
+                          r_java_contents)
+      codecs.open(package_r_java_path, 'w', encoding='utf-8').write(new_r_java)
+  else:
+    if len(extra_packages) != len(extra_r_text_files):
+      raise Exception('Need one R.txt file per extra package')
+
+    all_resources = {}
+    r_txt_file = os.path.join(r_dir, 'R.txt')
+    if not os.path.exists(r_txt_file):
+      return
+    with open(r_txt_file) as f:
+      for line in f:
+        m = re.match(r'(int(?:\[\])?) (\w+) (\w+) (.+)$', line)
+        if not m:
+          raise Exception('Unexpected line in R.txt: %s' % line)
+        java_type, resource_type, name, value = m.groups()
+        all_resources[(resource_type, name)] = (java_type, value)
+
+    for package, r_text_file in zip(extra_packages, extra_r_text_files):
+      if os.path.exists(r_text_file):
+        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')
+        CreateExtraRJavaFile(
+            package, package_r_java_path, r_text_file, all_resources,
+            shared_resources)
+
+
+def CreateExtraRJavaFile(
+      package, r_java_path, r_text_file, all_resources, shared_resources):
+  resources = {}
+  with open(r_text_file) as f:
+    for line in f:
+      m = re.match(r'int(?:\[\])? (\w+) (\w+) ', line)
+      if not m:
+        raise Exception('Unexpected line in R.txt: %s' % line)
+      resource_type, name = m.groups()
+      java_type, value = all_resources[(resource_type, name)]
+      if resource_type not in resources:
+        resources[resource_type] = []
+      resources[resource_type].append((name, java_type, value))
+
+  template = Template("""/* AUTO-GENERATED FILE.  DO NOT MODIFY. */
+
+package {{ package }};
+
+public final class R {
+    {% for resource_type in resources %}
+    public static final class {{ resource_type }} {
+        {% for name, java_type, value in resources[resource_type] %}
+        {% if shared_resources %}
+        public static {{ java_type }} {{ name }} = {{ value }};
+        {% else %}
+        public static final {{ java_type }} {{ name }} = {{ value }};
+        {% endif %}
+        {% endfor %}
+    }
+    {% endfor %}
+    {% if shared_resources %}
+    public static void onResourcesLoaded(int packageId) {
+        {% for resource_type in resources %}
+        {% for name, java_type, value in resources[resource_type] %}
+        {% if java_type == 'int[]' %}
+        for(int i = 0; i < {{ resource_type }}.{{ name }}.length; ++i) {
+            {{ resource_type }}.{{ name }}[i] =
+                    ({{ resource_type }}.{{ name }}[i] & 0x00ffffff)
+                    | (packageId << 24);
+        }
+        {% else %}
+        {{ resource_type }}.{{ name }} =
+                ({{ resource_type }}.{{ name }} & 0x00ffffff)
+                | (packageId << 24);
+        {% endif %}
+        {% endfor %}
+        {% endfor %}
+    }
+    {% endif %}
+}
+""", trim_blocks=True, lstrip_blocks=True)
+
+  output = template.render(package=package, resources=resources,
+                           shared_resources=shared_resources)
+  with open(r_java_path, 'w') as f:
+    f.write(output)
+
+
+def CrunchDirectory(aapt, input_dir, output_dir):
+  """Crunches the images in input_dir and its subdirectories into output_dir.
+
+  If an image is already optimized, crunching often increases image size. In
+  this case, the crunched image is overwritten with the original image.
+  """
+  aapt_cmd = [aapt,
+              'crunch',
+              '-C', output_dir,
+              '-S', input_dir,
+              '--ignore-assets', build_utils.AAPT_IGNORE_PATTERN]
+  build_utils.CheckOutput(aapt_cmd, stderr_filter=FilterCrunchStderr,
+                          fail_func=DidCrunchFail)
+
+  # Check for images whose size increased during crunching and replace them
+  # with their originals (except for 9-patches, which must be crunched).
+  for dir_, _, files in os.walk(output_dir):
+    for crunched in files:
+      if crunched.endswith('.9.png'):
+        continue
+      if not crunched.endswith('.png'):
+        raise Exception('Unexpected file in crunched dir: ' + crunched)
+      crunched = os.path.join(dir_, crunched)
+      original = os.path.join(input_dir, os.path.relpath(crunched, output_dir))
+      original_size = os.path.getsize(original)
+      crunched_size = os.path.getsize(crunched)
+      if original_size < crunched_size:
+        shutil.copyfile(original, crunched)
+
+
+def FilterCrunchStderr(stderr):
+  """Filters out lines from aapt crunch's stderr that can safely be ignored."""
+  filtered_lines = []
+  for line in stderr.splitlines(True):
+    # Ignore this libpng warning, which is a known non-error condition.
+    # http://crbug.com/364355
+    if ('libpng warning: iCCP: Not recognizing known sRGB profile that has '
+        + 'been edited' in line):
+      continue
+    filtered_lines.append(line)
+  return ''.join(filtered_lines)
+
+
+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).
+  """
+  return returncode != 0 or stderr
+
+
+def ZipResources(resource_dirs, zip_path):
+  # Python zipfile does not provide a way to replace a file (it just writes
+  # another file with the same name). So, first collect all the files to put
+  # in the zip (with proper overriding), and then zip them.
+  files_to_zip = dict()
+  for d in resource_dirs:
+    for root, _, files in os.walk(d):
+      for f in files:
+        archive_path = os.path.join(os.path.relpath(root, d), f)
+        path = os.path.join(root, f)
+        files_to_zip[archive_path] = path
+  with zipfile.ZipFile(zip_path, 'w') as outzip:
+    for archive_path, path in files_to_zip.iteritems():
+      outzip.write(path, archive_path)
+
+
+def CombineZips(zip_files, output_path):
+  # When packaging resources, if the top-level directories in the zip file are
+  # of the form 0, 1, ..., then each subdirectory will be passed to aapt as a
+  # resources directory. While some resources just clobber others (image files,
+  # etc), other resources (particularly .xml files) need to be more
+  # intelligently merged. That merging is left up to aapt.
+  with zipfile.ZipFile(output_path, 'w') as outzip:
+    for i, z in enumerate(zip_files):
+      with zipfile.ZipFile(z, 'r') as inzip:
+        for name in inzip.namelist():
+          new_name = '%d/%s' % (i, name)
+          outzip.writestr(new_name, inzip.read(name))
+
+
+def main():
+  args = build_utils.ExpandFileArgs(sys.argv[1:])
+
+  options = ParseArgs(args)
+  android_jar = os.path.join(options.android_sdk, 'android.jar')
+  aapt = options.aapt_path
+
+  input_files = []
+
+  with build_utils.TempDir() as temp_dir:
+    deps_dir = os.path.join(temp_dir, 'deps')
+    build_utils.MakeDirectory(deps_dir)
+    v14_dir = os.path.join(temp_dir, 'v14')
+    build_utils.MakeDirectory(v14_dir)
+
+    gen_dir = os.path.join(temp_dir, 'gen')
+    build_utils.MakeDirectory(gen_dir)
+
+    input_resource_dirs = build_utils.ParseGypList(options.resource_dirs)
+
+    if not options.v14_skip:
+      for resource_dir in input_resource_dirs:
+        generate_v14_compatible_resources.GenerateV14Resources(
+            resource_dir,
+            v14_dir)
+
+    dep_zips = build_utils.ParseGypList(options.dependencies_res_zips)
+    input_files += dep_zips
+    dep_subdirs = []
+    for z in dep_zips:
+      subdir = os.path.join(deps_dir, os.path.basename(z))
+      if os.path.exists(subdir):
+        raise Exception('Resource zip name conflict: ' + os.path.basename(z))
+      build_utils.ExtractAll(z, path=subdir)
+      dep_subdirs.append(subdir)
+
+    # 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', gen_dir,
+                       '-J', gen_dir,
+                       '--ignore-assets', build_utils.AAPT_IGNORE_PATTERN]
+
+    for d in input_resource_dirs:
+      package_command += ['-S', d]
+
+    for d in dep_subdirs:
+      package_command += ['-S', d]
+
+    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]
+    if options.shared_resources:
+      package_command.append('--shared-lib')
+    build_utils.CheckOutput(package_command, print_stderr=False)
+
+    if options.extra_res_packages:
+      CreateExtraRJavaFiles(
+          gen_dir,
+          build_utils.ParseGypList(options.extra_res_packages),
+          build_utils.ParseGypList(options.extra_r_text_files),
+          options.shared_resources,
+          options.include_all_resources)
+
+    # This is the list of directories with resources to put in the final .zip
+    # file. The order of these is important so that crunched/v14 resources
+    # override the normal ones.
+    zip_resource_dirs = input_resource_dirs + [v14_dir]
+
+    base_crunch_dir = os.path.join(temp_dir, 'crunch')
+
+    # Crunch image resources. This shrinks png files and is necessary for
+    # 9-patch images to display correctly. 'aapt crunch' accepts only a single
+    # directory at a time and deletes everything in the output directory.
+    for idx, input_dir in enumerate(input_resource_dirs):
+      crunch_dir = os.path.join(base_crunch_dir, str(idx))
+      build_utils.MakeDirectory(crunch_dir)
+      zip_resource_dirs.append(crunch_dir)
+      CrunchDirectory(aapt, input_dir, crunch_dir)
+
+    ZipResources(zip_resource_dirs, options.resource_zip_out)
+
+    if options.all_resources_zip_out:
+      CombineZips([options.resource_zip_out] + dep_zips,
+                  options.all_resources_zip_out)
+
+    if options.R_dir:
+      build_utils.DeleteDirectory(options.R_dir)
+      shutil.copytree(gen_dir, options.R_dir)
+    else:
+      build_utils.ZipDir(options.srcjar_out, gen_dir)
+
+    if options.r_text_out:
+      r_text_path = os.path.join(gen_dir, 'R.txt')
+      if os.path.exists(r_text_path):
+        shutil.copyfile(r_text_path, options.r_text_out)
+      else:
+        open(options.r_text_out, 'w').close()
+
+  if options.depfile:
+    input_files += build_utils.GetPythonDependencies()
+    build_utils.WriteDepfile(options.depfile, input_files)
+
+  if options.stamp:
+    build_utils.Touch(options.stamp)
+
+
+if __name__ == '__main__':
+  main()