/// <summary>
/// Decompress a pak file
/// </summary>
/// <param name="p_intManifestLocation">The position of the manifest in the pak file</param>
/// <returns></returns>
public UnpackedFile DecompressFile(int p_intManifestLocation)
{
if (p_intManifestLocation > (m_hdrPSHeader.TocEntries - 1))
{
return(new UnpackedFile());
}
byte[] outFile = null;
m_erReader.BaseStream.Position = (long)TOC[p_intManifestLocation].StartOffset; // From manifest
UInt16 isZipped = m_erReader.ReadUInt16();
m_erReader.BaseStream.Position -= 2; // Rewind 2 bytes
ulong cBlockSize = m_hdrPSHeader.BlockSize;
ulong zBlocks = (uint)(Math.Ceiling(TOC[p_intManifestLocation].OriginalSize / (double)cBlockSize));
if (isZipped == 0x78da || isZipped == 0x7801) // Stream is compressed
{
ulong fileSize = zBlocks * cBlockSize; // Only pass a part of the whole archive stream to be inflated.
outFile = ZlibUtils.Inflate(m_erReader.ReadBytes((int)fileSize), (uint)zBlocks, (uint)cBlockSize, TOC[p_intManifestLocation].OriginalSize);
}
else
{
outFile = m_erReader.ReadBytes((int)TOC[p_intManifestLocation].OriginalSize);
}
if (TOC[p_intManifestLocation].OriginalSize != (ulong)outFile.LongLength)
{
throw new InvalidDataException(string.Format("Expected size: {0}, Actual size: {1}", TOC[p_intManifestLocation].OriginalSize, outFile.LongLength));
}
var output = new UnpackedFile();
output.FileName = TOC[p_intManifestLocation].FileName;
output.BinaryFile = outFile;
var output2 = new UnpackedFile(TOC[p_intManifestLocation].FileName, outFile);
return(output);
}
public PackedFile CompressFile(String fileName, byte[] binaryFile)
{
var tmpHeader = new Header(true);
var tmpEntry = new TOCEntry();
tmpEntry.FileName = fileName.Replace('\\', '/');
tmpEntry.MD5 = new byte[16];
tmpEntry.OriginalSize = (ulong)binaryFile.LongLength;
tmpEntry.StartOffset = 0;
tmpEntry.BlockListStart = (uint)(Math.Ceiling(tmpEntry.OriginalSize / (double)tmpHeader.BlockSize));
try
{
byte[] compressedFile = ZlibUtils.Deflate(binaryFile, tmpHeader.BlockSize);
return(new PackedFile(tmpEntry, compressedFile));
}
catch { }
return(new PackedFile());
}
