private static ZtPackage ExtractInternal(Stream stream, string fileName, string outputDir)
{
BinaryReader reader = new BinaryReader(stream);
long startPosition = stream.Position;
ZTENTRYHDR entryHdr = new ZTENTRYHDR();
ZTENTRY entry;
List <ZTENTRYHDR> fileHdrs = new List <ZTENTRYHDR>();
List <ZTENTRY> fileEntries = new List <ZTENTRY>();
do
{
stream.Position = startPosition + entryHdr.OffsetNext;
startPosition = stream.Position;
entryHdr = reader.ReadUnmanaged <ZTENTRYHDR>();
entry = reader.ReadUnmanaged <ZTENTRY>();
fileHdrs.Add(entryHdr);
fileEntries.Add(entry);
if (outputDir != null)
{
byte[] fileData = Zlib.Decompress(reader, entry.CompressedLength, entry.DecompressedLength);
/*byte[] compressed = reader.ReadBytes(entry.CompressedLength);
* byte[] decompressed = new byte[entry.DecompressedLength];
*
* Zlib.Uncompress(decompressed, ref entry.DecompressedLength, compressed, entry.CompressedLength);*/
File.WriteAllBytes(Path.Combine(outputDir, entry.FileName), fileData);
}
} while (entryHdr.OffsetNext != 0);
return(new ZtPackage(fileName, fileHdrs.ToArray(), fileEntries.ToArray()));
}
internal ZtEntry(ZTENTRYHDR hdr, ZTENTRY entry)
{
FileName = entry.FileName;
Length = entry.DecompressedLength;
}
