Method extractFile

src/utilities/core/UnzipFile.cpp:103–145

}

openstudio::path UnzipFile::extractFile(const openstudio::path& filename, const openstudio::path& outputPath) const {
  if (unzLocateFile(m_unzFile, openstudio::toString(filename).c_str(), 1) != UNZ_OK) {
    throw std::runtime_error("File does not exist in archive: " + openstudio::toString(filename));
  }

  if (unzOpenCurrentFile(m_unzFile) != UNZ_OK) {
    throw std::runtime_error("Unable to open file in archive: " + openstudio::toString(filename));
  }

  std::vector<char> buffer(m_chunksize);

  try {
    bool cont = true;

    openstudio::path createdFile = outputPath / filename;
    openstudio::filesystem::create_directories(createdFile.parent_path());

    openstudio::filesystem::ofstream file(createdFile, std::ios_base::trunc | std::ios_base::binary);
    while (cont) {
      int bytesread = unzReadCurrentFile(m_unzFile, &buffer.front(), buffer.size());

      if (bytesread == 0) {
        cont = false;
      } else if (bytesread < 0) {
        throw std::runtime_error("Unable to read from file");
      } else {
        file.write(&buffer.front(), bytesread);
        if (!file.good()) {
          throw std::runtime_error("Error writing to output file: " + toString(createdFile));
        }
      }
    }
    file.close();

    return createdFile;
  } catch (...) {
    unzCloseCurrentFile(m_unzFile);
    throw;
  }

  unzCloseCurrentFile(m_unzFile);
  return openstudio::path{};
}

std::vector<openstudio::path> UnzipFile::listFiles() const {
  bool cont = unzGoToFirstFile(m_unzFile) == UNZ_OK;