| #!/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()) |