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# Copyright (c) 2009, Google Inc. All rights reserved.
# Copyright (c) 2009 Apple Inc. All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met:
#
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above
# copyright notice, this list of conditions and the following disclaimer
# in the documentation and/or other materials provided with the
# distribution.
# * Neither the name of Google Inc. nor the names of its
# contributors may be used to endorse or promote products derived from
# this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
# WebKit's Python module for logging
# This module is now deprecated in favor of python's built-in logging.py.
import os
import sys
def log(string):
print >> sys.stderr, string
def error(string):
log("ERROR: %s" % string)
exit(1)
# Simple class to split output between multiple destinations
class tee:
def __init__(self, *files):
self.files = files
def write(self, string):
for file in self.files:
file.write(string)
class OutputTee:
def __init__(self):
self._original_stdout = None
self._original_stderr = None
self._files_for_output = []
def add_log(self, path):
log_file = self._open_log_file(path)
self._files_for_output.append(log_file)
self._tee_outputs_to_files(self._files_for_output)
return log_file
def remove_log(self, log_file):
self._files_for_output.remove(log_file)
self._tee_outputs_to_files(self._files_for_output)
log_file.close()
@staticmethod
def _open_log_file(log_path):
(log_directory, log_name) = os.path.split(log_path)
if log_directory and not os.path.exists(log_directory):
os.makedirs(log_directory)
return open(log_path, 'a+')
def _tee_outputs_to_files(self, files):
if not self._original_stdout:
self._original_stdout = sys.stdout
self._original_stderr = sys.stderr
if files and len(files):
sys.stdout = tee(self._original_stdout, *files)
sys.stderr = tee(self._original_stderr, *files)
else:
sys.stdout = self._original_stdout
sys.stderr = self._original_stderr
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