#!/usr/bin/env python
# Copyright 2014 The Chromium Authors
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
# Disable the lint error for too-long lines for the URL below.
# pylint: disable=C0301
"""Fix Chrome App manifest.json files for use with multi-platform zip files.
See info about multi-platform zip files here:
https://developer.chrome.com/native-client/devguide/distributing#packaged-application
The manifest.json file needs to point to the correct platform-specific paths,
but we build all toolchains and configurations in the same tree. As a result,
we can't have one manifest.json for all combinations.
Instead, we update the top-level manifest.json file during the build:
"platforms": [
{
"nacl_arch": "x86-64",
"sub_package_path": "_platform_specific/x86-64/"
},
...
Becomes
"platforms": [
{
"nacl_arch": "x86-64",
"sub_package_path": "<toolchain>/<config>/_platform_specific/x86-64/"
},
...
"""
import argparse
import collections
import json
import os
import sys
if sys.version_info < (2, 7, 0):
sys.stderr.write("python 2.7 or later is required run this script\n")
sys.exit(1)
class Error(Exception):
"""Local Error class for this file."""
pass
def Trace(msg):
if Trace.verbose:
sys.stderr.write(str(msg) + '\n')
Trace.verbose = False
def main(args):
parser = argparse.ArgumentParser(description=__doc__)
parser.add_argument('-p', '--prefix',
help='Prefix to set for all sub_package_paths in the '
'manifest. If none is specified, the prefix will be '
'removed; i.e. the start of the path will be '
'"_platform_specific/..."')
parser.add_argument('-v', '--verbose',
help='Verbose output', action='store_true')
parser.add_argument('manifest_json')
options = parser.parse_args(args)
if options.verbose:
Trace.verbose = True
Trace('Reading %s' % options.manifest_json)
with open(options.manifest_json) as f:
# Keep the dictionary order. This is only supported on Python 2.7+
if sys.version_info >= (2, 7, 0):
data = json.load(f, object_pairs_hook=collections.OrderedDict)
else:
data = json.load(f)
if 'platforms' not in data:
raise Error('%s does not have "platforms" key.' % options.manifest_json)
platforms = data['platforms']
if not isinstance(platforms, list):
raise Error('Expected "platforms" key to be array.')
if options.prefix:
prefix = options.prefix + '/'
else:
prefix = ''
for platform in platforms:
nacl_arch = platform.get('nacl_arch')
if 'sub_package_path' not in platform:
raise Error('Expected each platform to have "sub_package_path" key.')
sub_package_path = platform['sub_package_path']
index = sub_package_path.find('_platform_specific')
if index == -1:
raise Error('Could not find "_platform_specific" in the '
'"sub_package_path" key.')
new_path = prefix + sub_package_path[index:]
platform['sub_package_path'] = new_path
Trace(' %s: "%s" -> "%s"' % (nacl_arch, sub_package_path, new_path))
with open(options.manifest_json, 'w') as f:
json.dump(data, f, indent=2)
return 0
if __name__ == '__main__':
try:
rtn = main(sys.argv[1:])
except Error, e:
sys.stderr.write('%s: %s\n' % (os.path.basename(__file__), e))
rtn = 1
except KeyboardInterrupt:
sys.stderr.write('%s: interrupted\n' % os.path.basename(__file__))
rtn = 1
sys.exit(rtn)
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