gcc_preprocess.py - mozsearch

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#!/usr/bin/env python3

# Copyright 2013 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.

import argparse

import os

import posixpath

import re

import sys

import zipfile

from util import build_utils

def _ParsePackageName(data):

  m = re.match(r'^\s*package\s+(.*?)\s*;', data, re.MULTILINE)

  return m.group(1) if m else ''

def main(args):

  args = build_utils.ExpandFileArgs(args)

  parser = argparse.ArgumentParser()

  parser.add_argument('--include-dirs', help='GN list of include directories.')

  parser.add_argument('--output', help='Path for .srcjar.')

  parser.add_argument('--define',

                      action='append',

                      dest='defines',

                      help='List of -D args')

  parser.add_argument('templates', nargs='+', help='Template files.')

  options = parser.parse_args(args)

  options.defines = build_utils.ParseGnList(options.defines)

  options.include_dirs = build_utils.ParseGnList(options.include_dirs)

  gcc_cmd = [

      'gcc',

      '-E',  # stop after preprocessing.

      '-DANDROID',  # Specify ANDROID define for pre-processor.

      '-x',

      'c-header',  # treat sources as C header files

      '-P',  # disable line markers, i.e. '#line 309'

  gcc_cmd.extend('-D' + x for x in options.defines)

  gcc_cmd.extend('-I' + x for x in options.include_dirs)

  with build_utils.AtomicOutput(options.output) as f:

    with zipfile.ZipFile(f, 'w') as z:

      for template in options.templates:

        data = build_utils.CheckOutput(gcc_cmd + [template])

        package_name = _ParsePackageName(data)

        if not package_name:

          raise Exception('Could not find java package of ' + template)

        zip_path = posixpath.join(

            package_name.replace('.', '/'),

            os.path.splitext(os.path.basename(template))[0]) + '.java'

        build_utils.AddToZipHermetic(z, zip_path, data=data)

if __name__ == '__main__':

  main(sys.argv[1:])