1 # Copyright (c) 2011 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 """Small utility function to find depot_tools and add it to the python path. 5 6 Will throw an ImportError exception if depot_tools can't be found since it 7 imports breakpad. 8 """ 9 10 import os 11 import sys 12 13 14 def IsRealDepotTools(path): 15 return os.path.isfile(os.path.join(path, 'gclient')) 16 17 18 def add_depot_tools_to_path(): 19 """Search for depot_tools and add it to sys.path.""" 20 # First look if depot_tools is already in PYTHONPATH. 21 for i in sys.path: 22 if i.rstrip(os.sep).endswith('depot_tools') and IsRealDepotTools(i): 23 return i 24 # Then look if depot_tools is in PATH, common case. 25 for i in os.environ['PATH'].split(os.pathsep): 26 if IsRealDepotTools(i): 27 sys.path.append(i.rstrip(os.sep)) 28 return i 29 # Rare case, it's not even in PATH, look upward up to root. 30 root_dir = os.path.dirname(os.path.abspath(__file__)) 31 previous_dir = os.path.abspath(__file__) 32 while root_dir and root_dir != previous_dir: 33 i = os.path.join(root_dir, 'depot_tools') 34 if IsRealDepotTools(i): 35 sys.path.append(i) 36 return i 37 previous_dir = root_dir 38 root_dir = os.path.dirname(root_dir) 39 print >> sys.stderr, 'Failed to find depot_tools' 40 return None 41 42 add_depot_tools_to_path() 43 44 # pylint: disable=W0611 45 import breakpad 46
