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