Method calculateMapHash

bwapi/BWAPI/Source/BWAPI/Map.cpp:167–194

  std::string Map::savedMapHash;

  std::string Map::calculateMapHash()
  {
    unsigned char hash[20];
    char hexstring[sizeof(hash)*2 + 1];
    std::string filename = Map::getPathName();

    // Open File
    Storm::CFile file;
    if ( !file.open(filename, SFILE_FROM_ABSOLUTE) )
    {
      filename += "\\staredit\\scenario.chk";
      if ( !file.open(filename, SFILE_FROM_MPQ) )
        return Map::savedMapHash = "Error_map_cannot_be_opened";
    }

    size_t fileSize = file.size();
    std::vector<char> data(fileSize);

    // Read file
    if ( !file.read(data.data(), fileSize) )
      return Map::savedMapHash = "Error_unable_to_read_file";

    // Calculate hash
    sha1::calc(data.data(), fileSize, hash);
    sha1::toHexString(hash, hexstring);

    return Map::savedMapHash = hexstring;
  }
  std::string Map::getMapHash()
  {
    return Map::savedMapHash;