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1#!/usr/bin/env python
2
3# Copyright 2013 The Chromium Authors. All rights reserved.
4# Use of this source code is governed by a BSD-style license that can be
5# found in the LICENSE file.
6
7"""Aggregates EMMA coverage files to produce html output."""
8
9import fnmatch
10import json
11import optparse
12import os
13import sys
14
15from pylib import cmd_helper
16from pylib import constants
17
18
19def _GetFilesWithExt(root_dir, ext):
20  """Gets all files with a given extension.
21
22  Args:
23    root_dir: Directory in which to search for files.
24    ext: Extension to look for (including dot)
25
26  Returns:
27    A list of absolute paths to files that match.
28  """
29  files = []
30  for root, _, filenames in os.walk(root_dir):
31    basenames = fnmatch.filter(filenames, '*.' + ext)
32    files.extend([os.path.join(root, basename)
33                  for basename in basenames])
34
35  return files
36
37
38def main():
39  option_parser = optparse.OptionParser()
40  option_parser.add_option('--output', help='HTML output filename.')
41  option_parser.add_option('--coverage-dir', default=None,
42                           help=('Root of the directory in which to search for '
43                                 'coverage data (.ec) files.'))
44  option_parser.add_option('--metadata-dir', default=None,
45                           help=('Root of the directory in which to search for '
46                                 'coverage metadata (.em) files.'))
47  option_parser.add_option('--cleanup', action='store_true',
48                           help=('If set, removes coverage files generated at '
49                                 'runtime.'))
50  options, _ = option_parser.parse_args()
51
52  if not (options.coverage_dir and options.metadata_dir and options.output):
53    option_parser.error('One or more mandatory options are missing.')
54
55  coverage_files = _GetFilesWithExt(options.coverage_dir, 'ec')
56  metadata_files = _GetFilesWithExt(options.metadata_dir, 'em')
57  print 'Found coverage files: %s' % str(coverage_files)
58  print 'Found metadata files: %s' % str(metadata_files)
59
60  sources = []
61  for f in metadata_files:
62    sources_file = os.path.splitext(f)[0] + '_sources.txt'
63    with open(sources_file, 'r') as sf:
64      sources.extend(json.load(sf))
65  sources = [os.path.join(constants.DIR_SOURCE_ROOT, s) for s in sources]
66  print 'Sources: %s' % sources
67
68  input_args = []
69  for f in coverage_files + metadata_files:
70    input_args.append('-in')
71    input_args.append(f)
72
73  output_args = ['-Dreport.html.out.file', options.output]
74  source_args = ['-sp', ','.join(sources)]
75
76  exit_code = cmd_helper.RunCmd(
77      ['java', '-cp',
78       os.path.join(constants.ANDROID_SDK_ROOT, 'tools', 'lib', 'emma.jar'),
79       'emma', 'report', '-r', 'html']
80      + input_args + output_args + source_args)
81
82  if options.cleanup:
83    for f in coverage_files:
84      os.remove(f)
85
86  return exit_code
87
88
89if __name__ == '__main__':
90  sys.exit(main())
91