[NaCl SDK] Convert python scripts from optparse to argparse.

native_client_sdk/src/build_tools/test_sdk.py

 #!/usr/bin/env python
 # Copyright (c) 2012 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 """Script for a testing an existing SDK.
 
 This script is normally run immediately after build_sdk.py.
 """
 
-import optparse
+import argparse
 import os
 import subprocess
 import sys
 
 import buildbot_common
 import build_projects
 import build_sdk
 import build_version
 import parse_dsc
 
@@ skipping 130 matching lines @@
   for toolchain in toolchains:
     args.extend(['-t', toolchain])
 
   try:
     subprocess.check_call(args)
   except subprocess.CalledProcessError:
     buildbot_common.ErrorExit('Error running tests.')
 
 
 def main(args):
-  usage = '%prog [<options>] [<phase...>]'
-  parser = optparse.OptionParser(description=__doc__, usage=usage)
-  parser.add_option('--experimental', help='build experimental tests',
-                    action='store_true')
-  parser.add_option('--sanitizer',
-                    help='Run sanitizer (asan/tsan/valgrind) tests',
-                    action='store_true')
-  parser.add_option('--verbose', '-v', help='Verbose output',
-                    action='store_true')
+  parser = argparse.ArgumentParser(description=__doc__)
+  parser.add_argument('--experimental', help='build experimental tests',
+                      action='store_true')
+  parser.add_argument('--sanitizer',
+                      help='Run sanitizer (asan/tsan/valgrind) tests',
+                      action='store_true')
+  parser.add_argument('--verbose', '-v', help='Verbose output',
+                      action='store_true')
+  parser.add_argument('phases', nargs="*")
 
   if 'NACL_SDK_ROOT' in os.environ:
     # We don't want the currently configured NACL_SDK_ROOT to have any effect
     # of the build.
     del os.environ['NACL_SDK_ROOT']
 
   # To setup bash completion for this command first install optcomplete
   # and then add this line to your .bashrc:
   #  complete -F _optcomplete test_sdk.py
   try:
     import optcomplete
     optcomplete.autocomplete(parser)
   except ImportError:
     pass
 
-  options, args = parser.parse_args(args)
+  options = parser.parse_args(args)
 
   pepper_ver = str(int(build_version.ChromeMajorVersion()))
   pepperdir = os.path.join(OUT_DIR, 'pepper_' + pepper_ver)
   toolchains = ['newlib', 'glibc', 'pnacl']
   toolchains.append(getos.GetPlatform())
 
   if options.verbose:
     build_projects.verbose = True
 
   phases = [
     ('build_examples', StepBuildExamples, pepperdir),
     ('copy_tests', StepCopyTests, pepperdir, toolchains, options.experimental),
     ('build_tests', StepBuildTests, pepperdir),
     ('sel_ldr_tests', StepRunSelLdrTests, pepperdir, None),
     ('browser_tests', StepRunBrowserTests, toolchains, options.experimental),
   ]
 
   if options.sanitizer:
     if getos.GetPlatform() != 'linux':
       buildbot_common.ErrorExit('sanitizer tests only run on linux.')
     phases += [
       ('sel_ldr_tests_asan', StepRunSelLdrTests, pepperdir, 'address'),
       ('sel_ldr_tests_tsan', StepRunSelLdrTests, pepperdir, 'thread'),
       ('sel_ldr_tests_valgrind', StepRunSelLdrTests, pepperdir, 'valgrind')
     ]
 
-  if args:
+  if options.phases:
     phase_names = [p[0] for p in phases]
-    for arg in args:
+    for arg in options.phases:
       if arg not in phase_names:
         msg = 'Invalid argument: %s\n' % arg
         msg += 'Possible arguments:\n'
         for name in phase_names:
           msg += '   %s\n' % name
         parser.error(msg.strip())
 
   for phase in phases:
     phase_name = phase[0]
-    if args and phase_name not in args:
+    if options.phases and phase_name not in options.phases:
       continue
     phase_func = phase[1]
     phase_args = phase[2:]
     phase_func(*phase_args)
 
   return 0
 
 
 if __name__ == '__main__':
   try:
     sys.exit(main(sys.argv[1:]))
   except KeyboardInterrupt:
     buildbot_common.ErrorExit('test_sdk: interrupted')