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#!/usr/bin/env python
# Copyright 2013 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
"""Aggregates EMMA coverage files to produce html output."""
import fnmatch
import json
import optparse
import os
import sys
import devil_chromium
from devil.utils import cmd_helper
from pylib import constants
from pylib.constants import host_paths
def _GetFilesWithExt(root_dir, ext):
"""Gets all files with a given extension.
Args:
root_dir: Directory in which to search for files.
ext: Extension to look for (including dot)
Returns:
A list of absolute paths to files that match.
"""
files = []
for root, _, filenames in os.walk(root_dir):
basenames = fnmatch.filter(filenames, '*.' + ext)
files.extend([os.path.join(root, basename)
for basename in basenames])
return files
def main():
option_parser = optparse.OptionParser()
option_parser.add_option('--output', help='HTML output filename.')
option_parser.add_option('--coverage-dir', default=None,
help=('Root of the directory in which to search for '
'coverage data (.ec) files.'))
option_parser.add_option('--metadata-dir', default=None,
help=('Root of the directory in which to search for '
'coverage metadata (.em) files.'))
option_parser.add_option('--cleanup', action='store_true',
help=('If set, removes coverage files generated at '
'runtime.'))
options, _ = option_parser.parse_args()
devil_chromium.Initialize()
if not (options.coverage_dir and options.metadata_dir and options.output):
option_parser.error('One or more mandatory options are missing.')
coverage_files = _GetFilesWithExt(options.coverage_dir, 'ec')
metadata_files = _GetFilesWithExt(options.metadata_dir, 'em')
# Filter out zero-length files. These are created by emma_instr.py when a
# target has no classes matching the coverage filter.
metadata_files = [f for f in metadata_files if os.path.getsize(f)]
print 'Found coverage files: %s' % str(coverage_files)
print 'Found metadata files: %s' % str(metadata_files)
sources = []
for f in metadata_files:
sources_file = os.path.splitext(f)[0] + '_sources.txt'
with open(sources_file, 'r') as sf:
sources.extend(json.load(sf))
# Source paths should be passed to EMMA in a way that the relative file paths
# reflect the class package name.
PARTIAL_PACKAGE_NAMES = ['com/google', 'org/chromium', 'com/chrome']
fixed_source_paths = set()
for path in sources:
for partial in PARTIAL_PACKAGE_NAMES:
if partial in path:
fixed_path = os.path.join(
host_paths.DIR_SOURCE_ROOT, path[:path.index(partial)])
fixed_source_paths.add(fixed_path)
break
sources = list(fixed_source_paths)
input_args = []
for f in coverage_files + metadata_files:
input_args.append('-in')
input_args.append(f)
output_args = ['-Dreport.html.out.file', options.output,
'-Dreport.html.out.encoding', 'UTF-8']
source_args = ['-sp', ','.join(sources)]
exit_code = cmd_helper.RunCmd(
['java', '-cp',
os.path.join(constants.ANDROID_SDK_ROOT, 'tools', 'lib', 'emma.jar'),
'emma', 'report', '-r', 'html']
+ input_args + output_args + source_args)
if options.cleanup:
for f in coverage_files:
os.remove(f)
# Command tends to exit with status 0 when it actually failed.
if not exit_code and not os.path.exists(options.output):
exit_code = 1
return exit_code
if __name__ == '__main__':
sys.exit(main())
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