native_client_sdk/src/build_tools/dsc_info.py

   1 #!/usr/bin/env python
   2 # Copyright 2013 The Chromium Authors. All rights reserved.
   3 # Use of this source code is governed by a BSD-style license that can be
   4 # found in the LICENSE file.
   5
   6 """Extracts information from a library.dsc file."""
   7
   8 import optparse
   9 import os
  10 import sys
  11
  12 import parse_dsc
  13
  14 def Error(msg):
  15   print >> sys.stderr, 'dsc_info: %s' % msg
  16   sys.exit(1)
  17
  18
  19 def FindTarget(tree, target_name):
  20   targets = tree['TARGETS']
  21   for target in targets:
  22     if target['NAME'] == target_name:
  23       return target
  24   Error('Target %s not found' % target_name)
  25
  26
  27 def GetSources(lib_dir, tree, target_name):
  28   result = []
  29   target = FindTarget(tree, target_name)
  30   for filename in target['SOURCES']:
  31     result.append('/'.join([lib_dir, filename]))
  32   return result
  33
  34
  35 def DoMain(argv):
  36   "Entry point for gyp's pymod_do_main command."
  37   parser = optparse.OptionParser(usage='%prog: [OPTIONS] TARGET')
  38   # Give a clearer error message when this is used as a module.
  39   parser.prog = 'dsc_info'
  40   parser.add_option('-s', '--sources',
  41                     help='Print a list of source files for the target',
  42                     action='store_true', default=False)
  43   parser.add_option('-l', '--libdir',
  44                     help='Directory where the library.dsc file is located',
  45                     metavar='DIR')
  46   options, args = parser.parse_args(argv)
  47   if len(args) != 1:
  48     parser.error('Expecting exactly one argument.')
  49   target = args[0]
  50   libdir = options.libdir or ''
  51   tree = parse_dsc.LoadProject(os.path.join(libdir, 'library.dsc'))
  52   if options.sources:
  53     return '\n'.join(GetSources(libdir, tree, target))
  54   parser.error('No action specified')
  55
  56
  57 def main(argv):
  58   print DoMain(argv[1:])
  59
  60
  61 if __name__ == '__main__':
  62   try:
  63     sys.exit(main(sys.argv))
  64   except KeyboardInterrupt:
  65     Error('interrupted')