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# Copyright 2015 Google Inc. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Stubifies an AndroidManifest.xml.
Does the following things:
- Replaces the Application class in an Android manifest with a stub one
- Resolve string and integer resources to their default values
usage: %s [input manifest] [output manifest] [file for old application class]
Writes the old application class into the file designated by the third argument.
"""
import sys
from xml.etree import ElementTree
from third_party.py import gflags
gflags.DEFINE_string("input_manifest", None, "The input manifest")
gflags.DEFINE_string("output_manifest", None, "The output manifest")
gflags.DEFINE_string("output_datafile", None, "The output data file that will "
"be embedded in the final APK")
gflags.DEFINE_string("override_package", None,
"The Android package. Override the one specified in the "
"input manifest")
FLAGS = gflags.FLAGS
ANDROID = "http://schemas.android.com/apk/res/android"
READ_EXTERNAL_STORAGE = "android.permission.READ_EXTERNAL_STORAGE"
STUB_APPLICATION = (
"com.google.devtools.build.android.incrementaldeployment.StubApplication")
# This is global state, but apparently that's the best one can to with
# ElementTree :(
ElementTree.register_namespace("android", ANDROID)
class BadManifestException(Exception):
pass
def Stubify(manifest_string):
"""Does the stubification on an XML string.
Args:
manifest_string: the input manifest as a string.
Returns:
A tuple of (output manifest, old application class, app package)
Raises:
Exception: if something goes wrong
"""
manifest = ElementTree.fromstring(manifest_string)
if manifest.tag != "manifest":
raise BadManifestException("invalid input manifest")
app_list = manifest.findall("application")
if len(app_list) == 1:
# <application> element is present
application = app_list[0]
elif len(app_list) == 0: # pylint: disable=g-explicit-length-test
# <application> element is not present
application = ElementTree.Element("application")
manifest.insert(0, application)
else:
raise BadManifestException("multiple <application> elements present")
old_application = application.get("{%s}name" % ANDROID)
if old_application is None:
old_application = "android.app.Application"
application.set("{%s}name" % ANDROID, STUB_APPLICATION)
read_permission = manifest.findall(
'./uses-permission[@android:name="%s"]' % READ_EXTERNAL_STORAGE,
namespaces={"android": ANDROID})
if not read_permission:
read_permission = ElementTree.Element("uses-permission")
read_permission.set("{%s}name" % ANDROID, READ_EXTERNAL_STORAGE)
manifest.insert(0, read_permission)
new_manifest = ElementTree.tostring(manifest)
app_package = manifest.get("package")
return (new_manifest, old_application, app_package)
def main():
with file(FLAGS.input_manifest) as input_manifest:
new_manifest, old_application, app_package = Stubify(input_manifest.read())
if FLAGS.override_package:
app_package = FLAGS.override_package
with file(FLAGS.output_manifest, "w") as output_xml:
output_xml.write(new_manifest)
with file(FLAGS.output_datafile, "w") as output_file:
output_file.write("\n".join([old_application, app_package]))
if __name__ == "__main__":
FLAGS(sys.argv)
main()
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