1# Copyright 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
5"""
6See http://dev.chromium.org/developers/how-tos/depottools/presubmit-scripts
7for more details on the presubmit API built into gcl.
8"""
9
10
11def CheckChange(input_api, output_api):
12  """Checks that histograms.xml is pretty-printed and well-formatted."""
13  for f in input_api.AffectedTextFiles():
14    p = f.AbsoluteLocalPath()
15    if (input_api.basename(p) == 'histograms.xml'
16        and input_api.os_path.dirname(p) == input_api.PresubmitLocalPath()):
17      cwd = input_api.os_path.dirname(p)
18      exit_code = input_api.subprocess.call(
19          ['python', 'pretty_print.py', '--presubmit'], cwd=cwd)
20      if exit_code != 0:
21        return [output_api.PresubmitError(
22            'histograms.xml is not formatted correctly; run pretty_print.py '
23            'to fix')]
24
25      exit_code = input_api.subprocess.call(
26          ['python', 'validate_format.py'], cwd=cwd)
27      if exit_code != 0:
28        return [output_api.PresubmitError(
29            'histograms.xml is not well formatted; run validate_format.py '
30            'and fix the reported errors')]
31  return []
32
33
34def CheckChangeOnUpload(input_api, output_api):
35  return CheckChange(input_api, output_api)
36
37
38def CheckChangeOnCommit(input_api, output_api):
39  return CheckChange(input_api, output_api)
40