1#!/usr/bin/env python
2
3# Copyright (c) 2012 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
7from third_party import asan_symbolize
8
9import os
10import re
11import sys
12
13def fix_filename(file_name):
14  for path_to_cut in sys.argv[1:]:
15    file_name = re.sub(".*" + path_to_cut, "", file_name)
16  file_name = re.sub(".*asan_[a-z_]*.cc:[0-9]*", "_asan_rtl_", file_name)
17  file_name = re.sub(".*crtstuff.c:0", "???:0", file_name)
18  return file_name
19
20class LineBuffered(object):
21  """Disable buffering on a file object."""
22  def __init__(self, stream):
23    self.stream = stream
24
25  def write(self, data):
26    self.stream.write(data)
27    if '\n' in data:
28      self.stream.flush()
29
30  def __getattr__(self, attr):
31    return getattr(self.stream, attr)
32
33
34def disable_buffering():
35  """Makes this process and child processes stdout unbuffered."""
36  if not os.environ.get('PYTHONUNBUFFERED'):
37    # Since sys.stdout is a C++ object, it's impossible to do
38    # sys.stdout.write = lambda...
39    sys.stdout = LineBuffered(sys.stdout)
40    os.environ['PYTHONUNBUFFERED'] = 'x'
41
42
43def main():
44  disable_buffering()
45  asan_symbolize.demangle = True
46  loop = asan_symbolize.SymbolizationLoop(binary_name_filter=fix_filename)
47  loop.process_stdin()
48
49if __name__ == '__main__':
50  main()
51