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#!/usr/bin/env python
# Copyright (C) 2015 The Android Open Source Project
#
# 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.
from __future__ import print_function
import argparse
import hashlib
import json
import os
import shutil
import subprocess
import sys
import bowerutil
CACHE_DIR = os.path.expanduser(os.path.join(
'~', '.gerritcodereview', 'bazel-cache', 'downloaded-artifacts'))
def bower_cmd(bower, *args):
cmd = bower.split(' ')
cmd.extend(args)
return cmd
def bower_info(bower, name, package, version):
cmd = bower_cmd(bower, '-l=error', '-j',
'info', '%s#%s' % (package, version))
try:
p = subprocess.Popen(cmd, stdout=subprocess.PIPE,
stderr=subprocess.PIPE)
except:
sys.stderr.write("error executing: %s\n" % ' '.join(cmd))
raise
out, err = p.communicate()
if p.returncode:
# For python3 support we wrap str around err.
sys.stderr.write(str(err))
raise OSError('Command failed: %s' % ' '.join(cmd))
try:
info = json.loads(out)
except ValueError:
raise ValueError('invalid JSON from %s:\n%s' % (" ".join(cmd), out))
info_name = info.get('name')
if info_name != name:
raise ValueError(
'expected package name %s, got: %s' % (name, info_name))
return info
def ignore_deps(info):
# Tell bower to ignore dependencies so we just download this component.
# This is just an optimization, since we only pick out the component we
# need, but it's important when downloading sizable dependency trees.
#
# As of 1.6.5 I don't think ignoredDependencies can be specified on the
# command line with --config, so we have to create .bowerrc.
deps = info.get('dependencies')
if deps:
with open(os.path.join('.bowerrc'), 'w') as f:
json.dump({'ignoredDependencies': list(deps.keys())}, f)
def cache_entry(name, package, version, sha1):
if not sha1:
sha1 = hashlib.sha1('%s#%s' % (package, version)).hexdigest()
return os.path.join(CACHE_DIR, '%s-%s.zip-%s' % (name, version, sha1))
def main():
parser = argparse.ArgumentParser()
parser.add_argument('-n', help='short name of component')
parser.add_argument('-b', help='bower command')
parser.add_argument('-p', help='full package name of component')
parser.add_argument('-v', help='version number')
parser.add_argument('-s', help='expected content sha1')
parser.add_argument('-o', help='output file location')
args = parser.parse_args()
assert args.p
assert args.v
assert args.n
cwd = os.getcwd()
outzip = os.path.join(cwd, args.o)
cached = cache_entry(args.n, args.p, args.v, args.s)
if not os.path.exists(cached):
info = bower_info(args.b, args.n, args.p, args.v)
ignore_deps(info)
subprocess.check_call(
bower_cmd(
args.b, '--quiet', 'install', '%s#%s' % (args.p, args.v)))
bc = os.path.join(cwd, 'bower_components')
subprocess.check_call(
['zip', '-q', '--exclude', '.bower.json', '-r', cached, args.n],
cwd=bc)
if args.s:
path = os.path.join(bc, args.n)
sha1 = bowerutil.hash_bower_component(
hashlib.sha1(), path).hexdigest()
if args.s != sha1:
print((
'%s#%s:\n'
'expected %s\n'
'received %s\n') % (args.p, args.v, args.s, sha1),
file=sys.stderr)
try:
os.remove(cached)
except OSError as err:
if path.exists(cached):
print('error removing %s: %s' % (cached, err),
file=sys.stderr)
return 1
shutil.copyfile(cached, outzip)
return 0
if __name__ == '__main__':
sys.exit(main())
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