15c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)# Copyright (c) 2009, Google Inc. All rights reserved. 25c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)# Copyright (c) 2009 Apple Inc. All rights reserved. 3926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles)# 45c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)# Redistribution and use in source and binary forms, with or without 55c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)# modification, are permitted provided that the following conditions are 65c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)# met: 7926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles)# 85c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)# * Redistributions of source code must retain the above copyright 95c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)# notice, this list of conditions and the following disclaimer. 105c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)# * Redistributions in binary form must reproduce the above 115c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)# copyright notice, this list of conditions and the following disclaimer 125c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)# in the documentation and/or other materials provided with the 135c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)# distribution. 145c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)# * Neither the name of Google Inc. nor the names of its 155c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)# contributors may be used to endorse or promote products derived from 165c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)# this software without specific prior written permission. 17926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles)# 185c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 195c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 205c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 215c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 225c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 235c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 245c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 255c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 265c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 275c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 285c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 295c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 305c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)import codecs 315c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)import os 325c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)import sys 335c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 345c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 355c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)# Simple class to split output between multiple destinations 36926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles)class Tee: 375c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) def __init__(self, *files): 385c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) self.files = files 395c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 405c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) # Callers should pass an already encoded string for writing. 415c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) def write(self, bytes): 425c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) for file in self.files: 435c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) file.write(bytes) 445c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 455c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 465c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)class OutputTee: 475c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) def __init__(self): 485c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) self._original_stdout = None 495c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) self._original_stderr = None 505c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) self._files_for_output = [] 515c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 525c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) def add_log(self, path): 535c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) log_file = self._open_log_file(path) 545c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) self._files_for_output.append(log_file) 555c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) self._tee_outputs_to_files(self._files_for_output) 565c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) return log_file 575c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 585c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) def remove_log(self, log_file): 595c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) self._files_for_output.remove(log_file) 605c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) self._tee_outputs_to_files(self._files_for_output) 615c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) log_file.close() 625c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 635c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) @staticmethod 645c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) def _open_log_file(log_path): 655c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) (log_directory, log_name) = os.path.split(log_path) 665c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) if log_directory and not os.path.exists(log_directory): 675c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) os.makedirs(log_directory) 685c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) return codecs.open(log_path, "a+", "utf-8") 695c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 705c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) def _tee_outputs_to_files(self, files): 715c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) if not self._original_stdout: 725c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) self._original_stdout = sys.stdout 735c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) self._original_stderr = sys.stderr 745c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) if files and len(files): 75926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) sys.stdout = Tee(self._original_stdout, *files) 76926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) sys.stderr = Tee(self._original_stderr, *files) 775c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) else: 785c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) sys.stdout = self._original_stdout 795c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) sys.stderr = self._original_stderr 80