text: #!/usr/bin/env python
  # Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
  #
  # Use of this source code is governed by a BSD-style license
  # that can be found in the LICENSE file in the root of the source
  # tree. An additional intellectual property rights grant can be found
  # in the file PATENTS.  All contributing project authors may
  # be found in the AUTHORS file in the root of the source tree.
  
  import os
  import subprocess
  import sys
  
  
  def run_ant_build_command(path_to_ant_build_file):
    """Tries to build the passed build file with ant."""
    ant_executable = 'ant'
    if sys.platform == 'win32':
      if os.getenv('ANT_HOME'):
        ant_executable = os.path.join(os.getenv('ANT_HOME'), 'bin', 'ant.bat')
      else:
        ant_executable = 'ant.bat'
    cmd = [ant_executable, '-buildfile', path_to_ant_build_file]
    try:
      process = subprocess.Popen(cmd, stdout=sys.stdout, stderr=sys.stderr)
      process.wait()
      if process.returncode != 0:
        print >> sys.stderr, 'Failed to execute: %s' % ' '.join(cmd)
      return process.returncode
    except Exception as e:
      print >> sys.stderr, 'Failed to execute: %s' % ' '.join(cmd)
      return -1
  
  def _main():
    core_build = os.path.join('third_party', 'zxing', 'core', 'build.xml')
    run_ant_build_command(core_build)
  
    javase_build = os.path.join('third_party', 'zxing', 'javase', 'build.xml')
    return run_ant_build_command(javase_build)
  
  
  if __name__ == '__main__':
    sys.exit(_main())
  