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145 lines
4.2 KiB
Python
145 lines
4.2 KiB
Python
# Copyright 2015 The Chromium Authors. All rights reserved.
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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'''
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Utility functions for all things related to manipulating google play services
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related files.
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'''
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import argparse
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import filecmp
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import json
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import os
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import re
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_XML_VERSION_NUMBER_PATTERN = re.compile(
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r'<integer name="google_play_services_version">(\d+)<\/integer>')
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class DefaultsRawHelpFormatter(argparse.ArgumentDefaultsHelpFormatter,
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argparse.RawDescriptionHelpFormatter):
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'''
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Combines the features of RawDescriptionHelpFormatter and
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ArgumentDefaultsHelpFormatter, providing defaults for the arguments and raw
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text for the description.
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'''
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pass
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class ConfigParser(object):
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'''Reads and writes the configuration files for play services related scripts
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The configuration files are JSON files. Here is the data they are expected
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to contain:
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- version_number
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Number. Mirrors @integer/google_play_services_version from the library.
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Example: 815000
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- sdk_version
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Version of the Play Services SDK to retrieve, when preprocessing the
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library from a maven/gradle repository.
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Example: "8.1.0"
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- clients
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List of strings. Name of the clients (or play services modules) to
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include when preprocessing the library.
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Example: ["play-services-base", "play-services-cast"]
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- version_xml_path
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String. Path to the version.xml string describing the current version.
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Should be relative to the library base directory
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Example: "res/values/version.xml"
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- locale_whitelist
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List of strings. List of locales to keep from the resources. Can be
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obtained by generating an android build and looking at the content of
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`out/Debug/gen/chrome/java/res`; or looking at the android section in
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`//chrome/app/generated_resources.grd`
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Example: ["am", "ar", "bg", "ca", "cs"]
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- resource_whitelist
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List of strings. List of resource files to explicitely keep in the final
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output. Use it to keep drawables for example, as we currently remove them
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all.
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Example: ["play-services-base/res/drawables/foobar.xml"]
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'''
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_VERSION_NUMBER_KEY = 'version_number'
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def __init__(self, path):
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self.path = path
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self._data = {}
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with open(path, 'r') as stream:
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self._data = json.load(stream)
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@property
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def version_number(self):
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return self._data.get(self._VERSION_NUMBER_KEY)
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@property
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def sdk_version(self):
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return self._data.get('sdk_version')
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@property
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def clients(self):
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return self._data.get('clients') or []
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@property
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def version_xml_path(self):
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return self._data.get('version_xml_path')
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@property
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def locale_whitelist(self):
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return self._data.get('locale_whitelist') or []
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@property
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def resource_whitelist(self):
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return self._data.get('resource_whitelist') or []
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def UpdateVersionNumber(self, new_version_number):
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'''Updates the version number and saves it in the configuration file. '''
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with open(self.path, 'w') as stream:
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self._data[self._VERSION_NUMBER_KEY] = new_version_number
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stream.write(DumpTrimmedJson(self._data))
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def DumpTrimmedJson(json_data):
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'''
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Default formatting when dumping json to string has trailing spaces and lacks
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a new line at the end. This function fixes that.
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'''
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out = json.dumps(json_data, sort_keys=True, indent=2)
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out = out.replace(' ' + os.linesep, os.linesep)
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return out + os.linesep
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def FileEquals(expected_file, actual_file):
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'''
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Returns whether the two files are equal. Returns False if any of the files
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doesn't exist.
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'''
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if not os.path.isfile(actual_file) or not os.path.isfile(expected_file):
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return False
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return filecmp.cmp(expected_file, actual_file)
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def GetVersionNumberFromLibraryResources(version_xml):
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'''
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Extracts a Google Play services version number from its version.xml file.
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'''
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with open(version_xml, 'r') as version_file:
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version_file_content = version_file.read()
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match = _XML_VERSION_NUMBER_PATTERN.search(version_file_content)
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if not match:
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raise AttributeError('A value for google_play_services_version was not '
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'found in ' + version_xml)
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return int(match.group(1))
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