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- #!/usr/bin/env python
- # Copyright 2015 The Chromium Authors. All rights reserved.
- # Use of this source code is governed by a BSD-style license that can be
- # found in the LICENSE file.
- """Wrapper script to run java command as action with gn."""
- import os
- import subprocess
- import sys
- EXIT_SUCCESS = 0
- EXIT_FAILURE = 1
- def IsExecutable(path):
- """Returns whether file at |path| exists and is executable.
- Args:
- path: absolute or relative path to test.
- Returns:
- True if the file at |path| exists, False otherwise.
- """
- return os.path.isfile(path) and os.access(path, os.X_OK)
- def FindCommand(command):
- """Looks up for |command| in PATH.
- Args:
- command: name of the command to lookup, if command is a relative or
- absolute path (i.e. contains some path separator) then only that
- path will be tested.
- Returns:
- Full path to command or None if the command was not found.
- On Windows, this respects the PATHEXT environment variable when the
- command name does not have an extension.
- """
- fpath, _ = os.path.split(command)
- if fpath:
- if IsExecutable(command):
- return command
- if sys.platform == 'win32':
- # On Windows, if the command does not have an extension, cmd.exe will
- # try all extensions from PATHEXT when resolving the full path.
- command, ext = os.path.splitext(command)
- if not ext:
- exts = os.environ['PATHEXT'].split(os.path.pathsep)
- else:
- exts = [ext]
- else:
- exts = ['']
- for path in os.environ['PATH'].split(os.path.pathsep):
- for ext in exts:
- path = os.path.join(path, command) + ext
- if IsExecutable(path):
- return path
- return None
- def main():
- java_path = FindCommand('java')
- if not java_path:
- sys.stderr.write('java: command not found\n')
- sys.exit(EXIT_FAILURE)
- args = sys.argv[1:]
- if len(args) < 2 or args[0] != '-jar':
- sys.stderr.write('usage: %s -jar JARPATH [java_args]...\n' % sys.argv[0])
- sys.exit(EXIT_FAILURE)
- return subprocess.check_call([java_path] + args)
- if __name__ == '__main__':
- sys.exit(main())
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