/// <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);
}
/// <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 );
}
/// <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);
}
