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1#!/usr/bin/env python3
2# Copyright 2017 the V8 project authors. All rights reserved.
3# Use of this source code is governed by a BSD-style license that can be
4# found in the LICENSE file.
5
6# for py2/py3 compatibility
7from __future__ import print_function
8
9import os
10import pipes
11import shutil
12import stat
13import subprocess
14import sys
15
16DEPOT_TOOLS_URL = \
17  "https://chromium.googlesource.com/chromium/tools/depot_tools.git"
18
19def EnsureDepotTools(v8_path, fetch_if_not_exist):
20  def _Get(v8_path):
21    depot_tools = os.path.join(v8_path, "_depot_tools")
22    try:
23      gclient_path = os.path.join(depot_tools, "gclient.py")
24      if os.path.isfile(gclient_path):
25        return depot_tools
26    except:
27      pass
28    if fetch_if_not_exist:
29      print("Checking out depot_tools.")
30      # shell=True needed on Windows to resolve git.bat.
31      subprocess.check_call("git clone {} {}".format(
32          pipes.quote(DEPOT_TOOLS_URL),
33          pipes.quote(depot_tools)), shell=True)
34      # Using check_output to hide warning messages.
35      subprocess.check_output(
36          [sys.executable, gclient_path, "metrics", "--opt-out"],
37          cwd=depot_tools)
38      return depot_tools
39    return None
40  depot_tools = _Get(v8_path)
41  assert depot_tools is not None
42  print("Using depot tools in %s" % depot_tools)
43  return depot_tools
44
45def UninitGit(v8_path):
46  print("Uninitializing temporary git repository")
47  target = os.path.join(v8_path, ".git")
48  if os.path.isdir(target):
49    print(">> Cleaning up %s" % target)
50    def OnRmError(func, path, exec_info):
51      # This might happen on Windows
52      os.chmod(path, stat.S_IWRITE)
53      os.unlink(path)
54    shutil.rmtree(target, onerror=OnRmError)
55