tools/gypv8sh.py

   1 #!/usr/bin/env python
   2 # Copyright (c) 2012 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 """This script is used by chrome_tests.gypi's js2webui action to maintain the
   7 argument lists and to generate inlinable tests.
   8 """
   9
  10 import json
  11 import optparse
  12 import os
  13 import subprocess
  14 import sys
  15 import shutil
  16
  17
  18 def HasSameContent(filename, content):
  19   '''Returns true if the given file is readable and has the given content.'''
  20   try:
  21     with open(filename) as file:
  22       return file.read() == content
  23   except:
  24     # Ignore all errors and fall back on a safe bet.
  25     return False
  26
  27
  28 def main ():
  29   parser = optparse.OptionParser()
  30   parser.set_usage(
  31       "%prog v8_shell mock.js test_api.js js2webui.js "
  32       "testtype inputfile inputrelfile cxxoutfile jsoutfile")
  33   parser.add_option('-v', '--verbose', action='store_true')
  34   parser.add_option('-n', '--impotent', action='store_true',
  35                     help="don't execute; just print (as if verbose)")
  36   parser.add_option('--deps_js', action="store",
  37                     help=("Path to deps.js for dependency resolution, " +
  38                           "optional."))
  39   parser.add_option('--external', action='store',
  40                     help="Load V8's initial snapshot from external files (y/n)")
  41   (opts, args) = parser.parse_args()
  42
  43   if len(args) != 9:
  44     parser.error('all arguments are required.')
  45   (v8_shell, mock_js, test_api, js2webui, test_type,
  46       inputfile, inputrelfile, cxxoutfile, jsoutfile) = args
  47   cmd = [v8_shell]
  48   icudatafile = os.path.join(os.path.dirname(v8_shell), 'icudtl.dat')
  49   if os.path.exists(icudatafile):
  50     cmd.extend(['--icu-data-file=%s' % icudatafile])
  51   v8nativesfile = os.path.join(os.path.dirname(v8_shell), 'natives_blob.bin')
  52   if opts.external == 'y' and os.path.exists(v8nativesfile):
  53     cmd.extend(['--natives_blob=%s' % v8nativesfile])
  54   v8snapshotfile = os.path.join(os.path.dirname(v8_shell), 'snapshot_blob.bin')
  55   if opts.external == 'y' and os.path.exists(v8snapshotfile):
  56     cmd.extend(['--snapshot_blob=%s' % v8snapshotfile])
  57   arguments = [js2webui, inputfile, inputrelfile, opts.deps_js,
  58                cxxoutfile, test_type]
  59   cmd.extend(['-e', "arguments=" + json.dumps(arguments), mock_js,
  60          test_api, js2webui])
  61   if opts.verbose or opts.impotent:
  62     print cmd
  63   if not opts.impotent:
  64     try:
  65       p = subprocess.Popen(
  66           cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE, bufsize=0)
  67       out, err = p.communicate()
  68       if not HasSameContent(cxxoutfile, out):
  69         with open(cxxoutfile, 'wb') as f:
  70           f.write(out)
  71       shutil.copyfile(inputfile, jsoutfile)
  72     except Exception, ex:
  73       if os.path.exists(cxxoutfile):
  74         os.remove(cxxoutfile)
  75       if os.path.exists(jsoutfile):
  76         os.remove(jsoutfile)
  77       raise
  78
  79
  80 if __name__ == '__main__':
  81   sys.exit(main())