Method ReadData

lib/mdflib/mdflib/src/at4block.cpp:230–265

}

void At4Block::ReadData(std::streambuf& buffer,
                        const std::string& dest_file) const {
  if (data_position_ <= 0) {
    throw std::invalid_argument("File is not opened or data position not read");
  }
  SetFilePosition(buffer, data_position_);
  if (IsEmbedded()) {
    std::filebuf dest;
    dest.open( dest_file,
            std::ios_base::out | std::ios_base::trunc | std::ios_base::binary);
    if (!dest.is_open()) {
      throw std::ios_base::failure("Failed to open the destination file");
    }
    const bool error = IsCompressed() ? !Inflate(buffer, dest, nof_bytes_)
                                      : !CopyBytes(buffer, dest, nof_bytes_);
    dest.close();
    if ( error ) {
      throw std::ios_base::failure("Failed to copy correct number of bytes");
    }
  } else {
    // Need to copy the source file
    fs::path s = fs::u8path(filename_);
    fs::path d = fs::u8path(dest_file);
    if (s != d) {
      fs::copy_file(
          s, d, fs::copy_options::overwrite_existing);
    }
  }
  if (flags_ & At4Flags::kUsingMd5) {
    std::vector<uint8_t> md5(16, 0xFF);
    CreateMd5FileChecksum(dest_file, md5);
    if (md5 != md5_) {
      throw std::runtime_error("Mismatching MD5 checksums");
    }
  }
}

void At4Block::ReadData(std::streambuf& buffer,
                        std::streambuf& dest_buffer) const {