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 argparse
   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(args):
  36   """Entry point for gyp's pymod_do_main command."""
  37   parser = argparse.ArgumentParser(description=__doc__)
  38   # Give a clearer error message when this is used as a module.
  39   parser.prog = 'dsc_info'
  40   parser.add_argument('-s', '--sources',
  41                     help='Print a list of source files for the target',
  42                     action='store_true', default=False)
  43   parser.add_argument('-l', '--libdir',
  44                     help='Directory where the library.dsc file is located',
  45                     metavar='DIR')
  46   parser.add_argument('target')
  47   options = parser.parse_args(args)
  48   libdir = options.libdir or ''
  49   tree = parse_dsc.LoadProject(os.path.join(libdir, 'library.dsc'))
  50   if options.sources:
  51     return '\n'.join(GetSources(libdir, tree, options.target))
  52   parser.error('No action specified')
  53
  54
  55 def main(args):
  56   print DoMain(args)
  57
  58
  59 if __name__ == '__main__':
  60   try:
  61     sys.exit(main(sys.argv[1:]))
  62   except KeyboardInterrupt:
  63     Error('interrupted')