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#!/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.
"""This script is used by chrome_tests.gypi's js2webui action to maintain the
argument lists and to generate inlinable tests.
"""
import json
import optparse
import os
import subprocess
import sys
import shutil
def HasSameContent(filename, content):
'''Returns true if the given file is readable and has the given content.'''
try:
with open(filename) as file:
return file.read() == content
except:
# Ignore all errors and fall back on a safe bet.
return False
def main ():
parser = optparse.OptionParser()
parser.set_usage(
"%prog v8_shell mock.js test_api.js js2webui.js "
"testtype inputfile inputrelfile cxxoutfile jsoutfile")
parser.add_option('-v', '--verbose', action='store_true')
parser.add_option('-n', '--impotent', action='store_true',
help="don't execute; just print (as if verbose)")
parser.add_option('--deps_js', action="store",
help=("Path to deps.js for dependency resolution, " +
"optional."))
parser.add_option('--external', action='store',
help="Load V8's initial snapshot from external files (y/n)")
(opts, args) = parser.parse_args()
if len(args) != 9:
parser.error('all arguments are required.')
(v8_shell, mock_js, test_api, js2webui, test_type,
inputfile, inputrelfile, cxxoutfile, jsoutfile) = args
cmd = [v8_shell]
icudatafile = os.path.join(os.path.dirname(v8_shell), 'icudtl.dat')
if os.path.exists(icudatafile):
cmd.extend(['--icu-data-file=%s' % icudatafile])
v8nativesfile = os.path.join(os.path.dirname(v8_shell), 'natives_blob.bin')
if opts.external == 'y' and os.path.exists(v8nativesfile):
cmd.extend(['--natives_blob=%s' % v8nativesfile])
v8snapshotfile = os.path.join(os.path.dirname(v8_shell), 'snapshot_blob.bin')
if opts.external == 'y' and os.path.exists(v8snapshotfile):
cmd.extend(['--snapshot_blob=%s' % v8snapshotfile])
arguments = [js2webui, inputfile, inputrelfile, opts.deps_js,
cxxoutfile, test_type]
cmd.extend(['-e', "arguments=" + json.dumps(arguments), mock_js,
test_api, js2webui])
if opts.verbose or opts.impotent:
print cmd
if not opts.impotent:
try:
p = subprocess.Popen(
cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE, bufsize=0)
out, err = p.communicate()
if not HasSameContent(cxxoutfile, out):
with open(cxxoutfile, 'wb') as f:
f.write(out)
shutil.copyfile(inputfile, jsoutfile)
except Exception, ex:
if os.path.exists(cxxoutfile):
os.remove(cxxoutfile)
if os.path.exists(jsoutfile):
os.remove(jsoutfile)
raise
if __name__ == '__main__':
sys.exit(main())
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