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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