blob: c80ebb829f2500341b04c6212db00cf9414267e5 [file] [log] [blame]
# Copyright (c) 2011 The Native Client Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
"""Small utility function to find depot_tools and add it to the python path.
Will throw an ImportError exception if depot_tools can't be found since it
imports breakpad.
"""
import os
import sys
def IsRealDepotTools(path):
return os.path.isfile(os.path.join(path, 'gclient'))
def add_depot_tools_to_path():
"""Search for depot_tools and add it to sys.path."""
# First look if depot_tools is already in PYTHONPATH.
for i in sys.path:
if i.rstrip(os.sep).endswith('depot_tools') and IsRealDepotTools(i):
return i
# Then look if depot_tools is in PATH, common case.
for i in os.environ['PATH'].split(os.pathsep):
if IsRealDepotTools(i):
sys.path.append(i.rstrip(os.sep))
return i
# Rare case, it's not even in PATH, look upward up to root.
root_dir = os.path.dirname(os.path.abspath(__file__))
previous_dir = os.path.abspath(__file__)
while root_dir and root_dir != previous_dir:
i = os.path.join(root_dir, 'depot_tools')
if IsRealDepotTools(i):
sys.path.append(i)
return i
previous_dir = root_dir
root_dir = os.path.dirname(root_dir)
print >> sys.stderr, 'Failed to find depot_tools'
return None
add_depot_tools_to_path()
# pylint: disable=W0611
import breakpad