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#!/usr/bin/env python
#
# Copyright (C) 2020 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.
#
"""A tool for constructing class loader context."""
from __future__ import print_function
import argparse
import sys
from manifest import compare_version_gt
def parse_args(args):
"""Parse commandline arguments."""
parser = argparse.ArgumentParser()
parser.add_argument(
'--target-sdk-version',
default='',
dest='sdk',
help='specify target SDK version (as it appears in the manifest)')
parser.add_argument(
'--host-context-for-sdk',
dest='host_contexts',
action='append',
nargs=2,
metavar=('sdk', 'context'),
help='specify context on host for a given SDK version or "any" version')
parser.add_argument(
'--target-context-for-sdk',
dest='target_contexts',
action='append',
nargs=2,
metavar=('sdk', 'context'),
help='specify context on target for a given SDK version or "any" '
'version'
)
return parser.parse_args(args)
# Special keyword that means that the context should be added to class loader
# context regardless of the target SDK version.
any_sdk = 'any'
# We assume that the order of context arguments passed to this script is
# correct (matches the order computed by package manager). It is possible to
# sort them here, but Soong needs to use deterministic order anyway, so it can
# as well use the correct order.
def construct_context(versioned_contexts, target_sdk):
context = []
for [sdk, ctx] in versioned_contexts:
if sdk == any_sdk or compare_version_gt(sdk, target_sdk):
context.append(ctx)
return context
def construct_contexts(args):
host_context = construct_context(args.host_contexts, args.sdk)
target_context = construct_context(args.target_contexts, args.sdk)
context_sep = '#'
return (
'class_loader_context_arg=--class-loader-context=PCL[]{%s} ; ' %
context_sep.join(host_context) +
'stored_class_loader_context_arg=--stored-class-loader-context=PCL[]{%s}' #pylint: disable=line-too-long
% context_sep.join(target_context))
def main():
"""Program entry point."""
try:
args = parse_args(sys.argv[1:])
if not args.sdk:
raise SystemExit('target sdk version is not set')
if not args.host_contexts:
args.host_contexts = []
if not args.target_contexts:
args.target_contexts = []
print(construct_contexts(args))
# pylint: disable=broad-except
except Exception as err:
print('error: ' + str(err), file=sys.stderr)
sys.exit(-1)
if __name__ == '__main__':
main()
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