The Tor Browser / file revision

 # This Source Code Form is subject to the terms of the Mozilla Public

 # License, v. 2.0. If a copy of the MPL was not distributed with this

 # file, You can obtain one at http://mozilla.org/MPL/2.0/.

 from __future__ import print_function

 import os, re, string, sys

 from mozbuild.util import FileAvoidWrite

 def find_in_path(file, searchpath):

     for dir in searchpath.split(os.pathsep):

         f = os.path.join(dir, file)

         if os.path.exists(f):

             return f

     return ''

 def header_path(header, compiler):

     if compiler == 'gcc':

         # we use include_next on gcc

         return header

     elif compiler == 'msvc':

         return find_in_path(header, os.environ.get('INCLUDE', ''))

     else:

         # hope someone notices this ...

         raise NotImplementedError(compiler)

 def is_comment(line):

     return re.match(r'\s*#.*', line)

 def main(outdir, compiler, template_file, header_list_file):

     if not os.path.isdir(outdir):

         os.mkdir(outdir)

     template = open(template_file, 'r').read()

     path_to_new = header_path('new', compiler)

     for header in open(header_list_file, 'r'):

         header = header.rstrip()

         if 0 == len(header) or is_comment(header):

             continue

         path = header_path(header, compiler)

         with FileAvoidWrite(os.path.join(outdir, header)) as f:

             f.write(string.Template(template).substitute(HEADER=header,

                                                          HEADER_PATH=path,

                                                          NEW_HEADER_PATH=path_to_new))

 if __name__ == '__main__':

     if 5 != len(sys.argv):

         print("""Usage:

   python {0} OUT_DIR ('msvc'|'gcc') TEMPLATE_FILE HEADER_LIST_FILE

 """.format(sys.argv[0]), file=sys.stderr)

         sys.exit(1)

     main(*sys.argv[1:])