#!/usr/bin/env python3
#
# 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.
"""Creates a simple script to run a java "binary".
This creates a script that sets up the java command line for running a java
jar. This includes correctly setting the classpath and the main class.
"""
import argparse
import os
import sys
from util import build_utils
import action_helpers # build_utils adds //build to sys.path.
# The java command must be executed in the current directory because there may
# be user-supplied paths in the args. The script receives the classpath relative
# to the directory that the script is written in and then, when run, must
# recalculate the paths relative to the current directory.
script_template = """\
#!/usr/bin/env python3
#
# This file was generated by build/android/gyp/create_java_binary_script.py
import argparse
import os
import sys
self_dir = os.path.dirname(__file__)
classpath = [{classpath}]
extra_program_args = {extra_program_args}
java_path = {java_path}
if os.getcwd() != self_dir:
offset = os.path.relpath(self_dir, os.getcwd())
fix_path = lambda p: os.path.normpath(os.path.join(offset, p))
classpath = [fix_path(p) for p in classpath]
java_path = fix_path(java_path)
java_cmd = [java_path]
# https://github.com/iBotPeaches/Apktool/issues/3174
# https://chromium-review.googlesource.com/c/chromium/src/+/4697557/3
java_cmd += ['-Djdk.util.zip.disableZip64ExtraFieldValidation=true']
# This is a simple argparser for jvm, jar, and classpath arguments.
parser = argparse.ArgumentParser(add_help=False)
parser.add_argument('--jar-args')
parser.add_argument('--jvm-args')
parser.add_argument('--classpath')
# Test_runner parses the classpath for sharding junit tests.
known_args, unknown_args = parser.parse_known_args(sys.argv[1:])
if known_args.jvm_args:
jvm_arguments = known_args.jvm_args.strip('"').split()
java_cmd.extend(jvm_arguments)
if known_args.jar_args:
jar_arguments = known_args.jar_args.strip('"').split()
if unknown_args:
raise Exception('There are unknown arguments')
else:
jar_arguments = unknown_args
if known_args.classpath:
classpath += [known_args.classpath]
{extra_flags}
java_cmd += ['-classpath', ':'.join(classpath), \"{main_class}\"]
java_cmd.extend(extra_program_args)
java_cmd.extend(jar_arguments)
os.execvp(java_cmd[0], java_cmd)
"""
def main(argv):
argv = build_utils.ExpandFileArgs(argv)
parser = argparse.ArgumentParser()
parser.add_argument('--output',
required=True,
help='Output path for executable script.')
parser.add_argument(
'--main-class',
required=True,
help='Name of the java class with the "main" entry point.')
parser.add_argument('--max-heap-size',
required=True,
help='Argument for -Xmx')
parser.add_argument('--classpath',
action='append',
default=[],
help='Classpath for running the jar.')
parser.add_argument('--enable-asserts',
action='store_true',
help='Enable Java assert statements')
parser.add_argument('--tiered-stop-at-level-one',
action='store_true',
help='JVM flag: -XX:TieredStopAtLevel=1.')
parser.add_argument('extra_program_args',
nargs='*',
help='This captures all '
'args after "--" to pass as extra args to the java cmd.')
args = parser.parse_args(argv)
extra_flags = [f'java_cmd.append("-Xmx{args.max_heap_size}")']
if args.enable_asserts:
extra_flags.append('java_cmd.append("-enableassertions")')
if args.tiered_stop_at_level_one:
extra_flags.append('java_cmd.append("-XX:TieredStopAtLevel=1")')
classpath = []
for cp_arg in args.classpath:
classpath += action_helpers.parse_gn_list(cp_arg)
run_dir = os.path.dirname(args.output)
classpath = [os.path.relpath(p, run_dir) for p in classpath]
java_path = os.path.relpath(
os.path.join(build_utils.JAVA_HOME, 'bin', 'java'), run_dir)
with action_helpers.atomic_output(args.output, mode='w') as script:
script.write(
script_template.format(classpath=('"%s"' % '", "'.join(classpath)),
java_path=repr(java_path),
main_class=args.main_class,
extra_program_args=repr(args.extra_program_args),
extra_flags='\n'.join(extra_flags)))
os.chmod(args.output, 0o750)
if __name__ == '__main__':
sys.exit(main(sys.argv[1:]))
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