build/android/gyp/ant.py

   1 #!/usr/bin/env python
   2 #
   3 # Copyright 2013 The Chromium Authors. All rights reserved.
   4 # Use of this source code is governed by a BSD-style license that can be
   5 # found in the LICENSE file.
   6
   7 """An Ant wrapper that suppresses useless Ant output.
   8
   9 Ant build scripts output "BUILD SUCCESSFUL" and build timing at the end of
  10 every build. In the Android build, this just adds a lot of useless noise to the
  11 build output. This script forwards its arguments to ant, and prints Ant's
  12 output up until the BUILD SUCCESSFUL line.
  13
  14 Also, when a command fails, this script will re-run that ant command with the
  15 '-verbose' argument so that the failure is easier to debug.
  16 """
  17
  18 import optparse
  19 import sys
  20 import traceback
  21
  22 from util import build_utils
  23
  24
  25 def main(argv):
  26   option_parser = optparse.OptionParser()
  27   build_utils.AddDepfileOption(option_parser)
  28   options, args = option_parser.parse_args(argv[1:])
  29
  30   try:
  31     stdout = build_utils.CheckOutput(['ant'] + args)
  32   except build_utils.CalledProcessError:
  33     # It is very difficult to diagnose ant failures without the '-verbose'
  34     # argument. So, when an ant command fails, re-run it with '-verbose' so that
  35     # the cause of the failure is easier to identify.
  36     verbose_args = ['-verbose'] + [a for a in args if a != '-quiet']
  37     try:
  38       stdout = build_utils.CheckOutput(['ant'] + verbose_args)
  39     except build_utils.CalledProcessError:
  40       traceback.print_exc()
  41       sys.exit(1)
  42
  43     # If this did sys.exit(1), building again would succeed (which would be
  44     # awkward). Instead, just print a big warning.
  45     build_utils.PrintBigWarning(
  46         'This is unexpected. `ant ' + ' '.join(args) + '` failed.' +
  47         'But, running `ant ' + ' '.join(verbose_args) + '` passed.')
  48
  49   stdout = stdout.strip().split('\n')
  50   for line in stdout:
  51     if line.strip() == 'BUILD SUCCESSFUL':
  52       break
  53     print line
  54
  55   if options.depfile:
  56     assert '-buildfile' in args
  57     ant_buildfile = args[args.index('-buildfile') + 1]
  58
  59     build_utils.WriteDepfile(
  60         options.depfile,
  61         [ant_buildfile] + build_utils.GetPythonDependencies())
  62
  63
  64 if __name__ == '__main__':
  65   sys.exit(main(sys.argv))