Function readPack

src/packFileSerializer.ts:2896–3222

(
  modPath: string,
  packReadingOptions: PackReadingOptions = { skipParsingTables: false },
)

};
export const matchDBFileRegex = /^db\\(.*?)\\/;
export const readPack = async (
  modPath: string,
  packReadingOptions: PackReadingOptions = { skipParsingTables: false },
): Promise<Pack> => {
  const pack_files: PackedFile[] = [];
  let packHeader: PackHeader | undefined;
  const dependencyPacks: string[] = [];
  let lastChangedLocal = -1;
  let size = 0;
  try {
    const stats = await fsExtra.stat(modPath);
    lastChangedLocal = stats.mtimeMs;
    size = stats.size;
  } catch (e) {
    console.log(e);
  }
  // let file: BinaryFile | undefined;
  // eslint-disable-next-line @typescript-eslint/no-inferrable-types
  let fileId: number = -1;
  try {
    fileId = fs.openSync(modPath, "r");
    // console.log(`${modPath} file opened`);
    // if (packReadingOptions.tablesToRead)
    //   console.log(`NUM OF TABLES TO READ:`, packReadingOptions.tablesToRead.length);
    // header 4
    // byteMask 4
    // refFileCount 4
    // pack_file_index_size 4
    // pack_file_count 4
    // packed_file_index_size 4
    // headerBuffer 4
    // header_buffer_len 4;
    const packedFileHeaderSize = 8 * 4;
    const packedFileHeader = Buffer.allocUnsafe(packedFileHeaderSize);
    fs.readSync(fileId, packedFileHeader, 0, packedFileHeader.length, 0);
    let packedFileHeaderPosition = 0;
    const header = await packedFileHeader.subarray(packedFileHeaderPosition, packedFileHeaderPosition + 4);
    packedFileHeaderPosition += 4;
    if (header === null) throw new Error("header missing");
    if (appData.currentGame == "attila" && header.toString("hex") == "50464835") {
      throw new Error("WRONG HEADER: WH3 HEADER FOR WHEN CURRENT GAME IS ATTILA");
    }
    const byteMask = await packedFileHeader.readInt32LE(packedFileHeaderPosition);
    packedFileHeaderPosition += 4;
    const refFileCount = await packedFileHeader.readInt32LE(packedFileHeaderPosition);
    packedFileHeaderPosition += 4;
    const pack_file_index_size = await packedFileHeader.readInt32LE(packedFileHeaderPosition);
    packedFileHeaderPosition += 4;
    const pack_file_count = await packedFileHeader.readInt32LE(packedFileHeaderPosition);
    packedFileHeaderPosition += 4;
    const packed_file_index_size = await packedFileHeader.readInt32LE(packedFileHeaderPosition);
    packedFileHeaderPosition += 4;
    const header_buffer_len = 4;
    const header_buffer = await packedFileHeader.subarray(
      packedFileHeaderPosition,
      packedFileHeaderPosition + header_buffer_len,
    );
    packedFileHeaderPosition += header_buffer_len;