v8/tools/find_depot_tools.py
Vadim Gorbachev (bmsdave) 7315d7b3d7 Preparing v8 to use with python3 /tools
There are now less that 400 days until the end of life
of Python 2(aka _legacy_ Python) https://pythonclock.org/ .
The code compatibility check for python2 and python3
used the following tools: futurize, flake8
You can see the reports here: https://travis-ci.com/bmsdave/v8/builds

This CL was uploaded by git cl split.

Bug: v8:8594
Change-Id: I661c52a70527e8ddde841fee6d4dcba282b4a938
Reviewed-on: https://chromium-review.googlesource.com/c/1470123
Commit-Queue: Sergiy Belozorov <sergiyb@chromium.org>
Reviewed-by: Sergiy Belozorov <sergiyb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59675}
2019-02-19 09:12:07 +00:00

44 lines
1.5 KiB
Python

# Copyright 2014 the V8 project 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.
"""
# for py2/py3 compatibility
from __future__ import print_function
import os
import sys
def directory_really_is_depot_tools(directory):
return os.path.isfile(os.path.join(directory, 'gclient.py'))
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'):
if directory_really_is_depot_tools(i):
return i
# Then look if depot_tools is in PATH, common case.
for i in os.environ['PATH'].split(os.pathsep):
if i.rstrip(os.sep).endswith('depot_tools'):
if directory_really_is_depot_tools(i):
sys.path.insert(0, 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:
if directory_really_is_depot_tools(os.path.join(root_dir, 'depot_tools')):
i = os.path.join(root_dir, 'depot_tools')
sys.path.insert(0, i)
return i
previous_dir = root_dir
root_dir = os.path.dirname(root_dir)
print('Failed to find depot_tools', file=sys.stderr)
return None