build/android/generate_emma_html.py

   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
   9 import fnmatch
  10 import json
  11 import optparse
  12 import os
  13 import sys
  14
  15 from pylib import cmd_helper
  16 from pylib import constants
  17
  18
  19 def _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
  38 def 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
  89 if __name__ == '__main__':
  90   sys.exit(main())