build-aux/soexpand.py

   1 #! /usr/bin/env python3
   2
   3 # Copyright (c) 2008, 2017 Nicira, Inc.
   4 #
   5 # Licensed under the Apache License, Version 2.0 (the "License");
   6 # you may not use this file except in compliance with the License.
   7 # You may obtain a copy of the License at:
   8 #
   9 #     http://www.apache.org/licenses/LICENSE-2.0
  10 #
  11 # Unless required by applicable law or agreed to in writing, software
  12 # distributed under the License is distributed on an "AS IS" BASIS,
  13 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14 # See the License for the specific language governing permissions and
  15 # limitations under the License.
  16
  17 from build import soutil
  18 import sys
  19
  20
  21 def soexpand(include_dirs, src, dst):
  22     ok = True
  23     while True:
  24         line = src.readline()
  25         if not line:
  26             break
  27
  28         name = soutil.extract_include_directive(line)
  29         if name:
  30             fn = soutil.find_file(include_dirs, name)
  31             if fn:
  32                 try:
  33                     f = open(fn)
  34                     while True:
  35                         inner = f.readline()
  36                         if not inner:
  37                             break
  38                         dst.write(inner)
  39                 except IOError as e:
  40                     sys.stderr.write("%s: open: %s\n" % (fn, e.strerror))
  41                     ok = False
  42                 continue
  43             else:
  44                 ok = False
  45
  46         dst.write(line)
  47     return ok
  48
  49
  50 if __name__ == '__main__':
  51     include_dirs, args = soutil.parse_include_dirs()
  52     if args:
  53         error = False
  54         for arg in args:
  55             if not soexpand(include_dirs, open(arg), sys.stdout):
  56                 error = True
  57     else:
  58         error = not soexpand(include_dirs, sys.stdin, sys.stdout)
  59     sys.exit(1 if error else 0)