1# Copyright (c) 2013 The Chromium Authors. All rights reserved. 2# Use of this source code is governed by a BSD-style license that can be 3# found in the LICENSE file. 4 5import os 6import stat 7import sys 8 9def CopyTool(source_path): 10 """Copies the given tool to the current directory, including a warning not 11 to edit it.""" 12 with open(source_path) as source_file: 13 tool_source = source_file.readlines() 14 15 # Add header and write it out to the current directory (which should be the 16 # root build dir). Don't write the file if a matching file already exists 17 # because that causes a cascade of unnecessary rebuilds. 18 match = False 19 contents = ''.join([tool_source[0], 20 '# Generated by setup_toolchain.py do not edit.\n'] 21 + tool_source[1:]) 22 out_path = 'gyp-mac-tool' 23 try: 24 with open(out_path, 'rb') as read_tool_file: 25 existing_contents = read_tool_file.read() 26 if existing_contents == contents: 27 match = True 28 except: 29 pass 30 if not match: 31 with open(out_path, 'wb') as write_tool_file: 32 write_tool_file.write(contents) 33 st = os.stat(out_path) 34 if (st.st_mode & stat.S_IEXEC) == 0: 35 # Only chmod when necessary. 36 os.chmod(out_path, st.st_mode | stat.S_IEXEC) 37 38# Find the tool source, it's the first argument, and copy it. 39if len(sys.argv) != 2: 40 print "Need one argument (mac_tool source path)." 41 sys.exit(1) 42CopyTool(sys.argv[1]) 43