예제 #1
0
        /// <summary>
        /// Cosntructs a new instance of UltimaPackage.
        /// </summary>
        /// <param name="filePath">Path to the .uop file.</param>
        public UltimaPackage(string filePath)
        {
            _FilePath = filePath;
            _Files    = new Dictionary <ulong, UltimaPackageFile>();
            _Stream   = File.Open(filePath, FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
            _Reader   = new BinaryReader(_Stream);

            byte[] id = _Reader.ReadBytes(4);

            if (id[0] != 'M' || id[1] != 'Y' || id[2] != 'P' || id[3] != 0)
            {
                throw new FormatException("Not a Mythic Package file!");
            }

            _Version = _Reader.ReadInt32();
            _Reader.ReadInt32(); // Constant number

            long nextBlockAddress = _Reader.ReadInt64();
            long blockSize        = _Reader.ReadInt32();

            // Unknown
            _Reader.ReadInt32();

            // Move to first block header
            do
            {
                _Stream.Seek(nextBlockAddress, SeekOrigin.Begin);
                int fileCount = _Reader.ReadInt32();
                nextBlockAddress = _Reader.ReadInt64();

                for (int i = 0; i < blockSize; i++)
                {
                    if (i < fileCount)
                    {
                        // Actual file
                        UltimaPackageFile file = new UltimaPackageFile(this, _Reader);

                        if (file.FileAddress == 0)
                        {
                            continue;
                        }

                        if (!_Files.ContainsKey(file.FileNameHash))
                        {
                            _Files.Add(file.FileNameHash, file);
                        }
                    }
                    else
                    {
                        // Blank
                        _Stream.Seek(UltimaPackageFile.FileHeaderSize, SeekOrigin.Current);
                    }
                }
            }while (nextBlockAddress > 0);
        }
예제 #2
0
        /// <summary>
        /// Cosntructs a new instance of UltimaPackage.
        /// </summary>
        /// <param name="filePath">Path to the .uop file.</param>
        public UltimaPackage( string filePath )
        {
            _FilePath = filePath;
            _Files = new Dictionary<ulong, UltimaPackageFile>();
            _Stream = File.Open( filePath, FileMode.Open, FileAccess.Read, FileShare.ReadWrite );
            _Reader = new BinaryReader( _Stream );

            byte[] id = _Reader.ReadBytes( 4 );

            if ( id[ 0 ] != 'M' || id[ 1 ] != 'Y' || id[ 2 ] != 'P' || id[ 3 ] != 0 )
                throw new FormatException( "Not a Mythic Package file!" );

            _Version = _Reader.ReadInt32();
            _Reader.ReadInt32(); // Constant number

            long nextBlockAddress = _Reader.ReadInt64();
            long blockSize = _Reader.ReadInt32();

            // Unknown
            _Reader.ReadInt32();

            // Move to first block header
            do
            {
                _Stream.Seek( nextBlockAddress, SeekOrigin.Begin );
                int fileCount = _Reader.ReadInt32();
                nextBlockAddress = _Reader.ReadInt64();

                for ( int i = 0; i < blockSize; i++ )
                {
                    if ( i < fileCount )
                    {
                        // Actual file
                        UltimaPackageFile file = new UltimaPackageFile( this, _Reader );

                        if ( file.FileAddress == 0 )
                            continue;

                        if ( !_Files.ContainsKey( file.FileNameHash ) )
                            _Files.Add( file.FileNameHash, file );
                    }
                    else
                    {
                        // Blank
                        _Stream.Seek( UltimaPackageFile.FileHeaderSize, SeekOrigin.Current );
                    }
                }
            }
            while ( nextBlockAddress > 0 );
        }
예제 #3
0
        /// <summary>
        /// Gets file data.
        /// </summary>
        /// <param name="fileNameHash">File hash.</param>
        /// <returns>File data.</returns>
        public byte[] GetFile(ulong fileNameHash)
        {
            UltimaPackageFile file = null;

            if (!_Files.TryGetValue(fileNameHash, out file))
            {
                return(null);
            }

            _Stream.Seek(file.FileAddress, SeekOrigin.Begin);

            byte[] compressed = new byte[file.CompressedSize];

            if (_Reader.Read(compressed, 0, file.CompressedSize) != file.CompressedSize)
            {
                throw new FileLoadException("Error reading file");
            }

            if (file.Compression == FileCompression.Zlib)
            {
                int    decompressedSize = file.DecompressedSize;
                byte[] decompressed     = new byte[decompressedSize];

                ZLibError error;

                if (SystemInfo.IsX64)
                {
                    error = Zlib64.Decompress(decompressed, ref decompressedSize, compressed, compressed.Length);
                }
                else
                {
                    error = Zlib32.Decompress(decompressed, ref decompressedSize, compressed, compressed.Length);
                }

                if (decompressedSize != file.DecompressedSize)
                {
                    throw new PackageException("Error decompressing vile. Decompressed length missmatch. Defined={0} Actual={1}", file.DecompressedSize, decompressedSize);
                }

                if (error == ZLibError.Okay)
                {
                    return(decompressed);
                }

                throw new PackageException("Error decompressing file. Error={0}", error);
            }

            return(compressed);
        }