1    :  // Copyright 2012 Google Inc. All Rights Reserved.
   2    :  //
   3    :  // Licensed under the Apache License, Version 2.0 (the "License");
   4    :  // you may not use this file except in compliance with the License.
   5    :  // You may obtain a copy of the License at
   6    :  //
   7    :  //     http://www.apache.org/licenses/LICENSE-2.0
   8    :  //
   9    :  // Unless required by applicable law or agreed to in writing, software
  10    :  // distributed under the License is distributed on an "AS IS" BASIS,
  11    :  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  12    :  // See the License for the specific language governing permissions and
  13    :  // limitations under the License.
  14    :  
  15    :  #include "syzygy/grinder/lcov_writer.h"
  16    :  
  17    :  #include "base/files/file_util.h"
  18    :  
  19    :  namespace grinder {
  20    :  
  21    :  bool WriteLcovCoverageFile(const CoverageData& coverage,
  22  E :                             const base::FilePath& path) {
  23  E :    base::ScopedFILE file(base::OpenFile(path, "wb"));
  24  E :    if (file.get() == NULL) {
  25  i :      LOG(ERROR) << "Failed to open file for writing: " << path.value();
  26  i :      return false;
  27    :    }
  28    :  
  29  E :    if (!WriteLcovCoverageFile(coverage, file.get())) {
  30  i :      LOG(ERROR) << "Failed to write LCOV file: " << path.value();
  31  i :      return false;
  32    :    }
  33    :  
  34  E :    return true;
  35  E :  }
  36    :  
  37  E :  bool WriteLcovCoverageFile(const CoverageData& coverage, FILE* file) {
  38  E :    DCHECK(file != NULL);
  39    :  
  40    :    CoverageData::SourceFileCoverageDataMap::const_iterator source_it =
  41  E :        coverage.source_file_coverage_data_map().begin();
  42    :    CoverageData::SourceFileCoverageDataMap::const_iterator source_it_end =
  43  E :        coverage.source_file_coverage_data_map().end();
  44  E :    for (; source_it != source_it_end; ++source_it) {
  45  E :      if (::fprintf(file, "SF:%s\n", source_it->first.c_str()) < 0)
  46  i :        return false;
  47    :  
  48    :      // Iterate over the line execution data, keeping summary statistics as we
  49    :      // go.
  50  E :      size_t lines_executed = 0;
  51    :      CoverageData::LineExecutionCountMap::const_iterator line_it =
  52  E :          source_it->second.line_execution_count_map.begin();
  53    :      CoverageData::LineExecutionCountMap::const_iterator line_it_end =
  54  E :          source_it->second.line_execution_count_map.end();
  55  E :      for (; line_it != line_it_end; ++line_it) {
  56  E :        if (::fprintf(file, "DA:%d,%d\n", line_it->first, line_it->second) < 0)
  57  i :          return false;
  58  E :        if (line_it->second > 0)
  59  E :          ++lines_executed;
  60  E :      }
  61    :  
  62    :      // Output the summary statistics for this file.
  63    :      if (::fprintf(file, "LH:%d\n", lines_executed) < 0 ||
  64    :          ::fprintf(file, "LF:%d\n",
  65    :                    source_it->second.line_execution_count_map.size()) < 0 ||
  66  E :          ::fprintf(file, "end_of_record\n") < 0) {
  67  i :        return false;
  68    :      }
  69  E :    }
  70    :  
  71  E :    return true;
  72  E :  }
  73    :  
  74    :  }  // namespace grinder