public override Stream OpenEntry(ArcFile arc, Entry entry)
{
var parc = arc as PcfArchive;
var pent = entry as PcfEntry;
if (null == pent || null == parc)
{
return(base.OpenEntry(arc, entry));
}
Stream input = arc.File.CreateStream(entry.Offset, entry.Size);
try
{
input = parc.Scheme.TransformStream(input, pent.Key, pent.Flags);
if (pent.IsPacked)
{
input = new LimitStream(input, pent.UnpackedSize);
}
return(input);
}
catch
{
input.Dispose();
throw;
}
}
IBinaryStream OpenBitmapStream(IBinaryStream file, uint unpacked_size)
{
file.Position = 4;
Stream input = new LzssStream(file.AsStream, LzssMode.Decompress, true);
input = new LimitStream(input, unpacked_size);
return(new BinaryStream(input, file.Name));
}
public override Stream OpenEntry(ArcFile arc, Entry entry)
{
Stream input = arc.File.CreateStream(entry.Offset, entry.Size);
var pent = entry as PackedEntry;
if (null == pent || !pent.IsPacked)
{
return(input);
}
input = new PackedStream <LzBitsDecompressor> (input);
input = new LimitStream(input, pent.UnpackedSize);
if (entry.Name.HasExtension(".gpa"))
{
input = new XoredStream(input, 0xFF);
}
return(input);
}
public override Stream OpenEntry(ArcFile arc, Entry entry)
{
var parc = (PckArchive)arc;
var pent = (PackedEntry)entry;
byte data_type = arc.File.View.ReadByte(pent.Offset);
Stream input = arc.File.CreateStream(pent.Offset + 1, pent.Size);
if (data_type != 0)
{
input = new InputCryptoStream(input, parc.Encryption.CreateDecryptor());
if (data_type != 3)
{
input = new LimitStream(input, pent.UnpackedSize);
}
else
{
input = new BZip2InputStream(input);
}
}
return(input);
}
public override Stream OpenEntry(ArcFile arc, Entry entry)
{
var parc = arc as PazArchiveBase;
var pent = entry as PazEntry;
if (null == parc || null == pent)
{
return(base.OpenEntry(arc, entry));
}
Stream input = parc.OpenStream(entry);
try
{
if (parc.XorKey != 0)
{
input = new XoredStream(input, parc.XorKey);
}
input = parc.DecryptEntry(input, pent);
if (pent.Size < pent.AlignedSize)
{
input = new LimitStream(input, pent.Size);
}
if (pent.IsPacked)
{
input = new ZLibStream(input, CompressionMode.Decompress);
}
return(input);
}
catch
{
if (input != null)
{
input.Dispose();
}
throw;
}
}
public override Stream OpenEntry(ArcFile arc, Entry entry)
{
var parc = arc as PazArchiveBase;
var pent = entry as PazEntry;
if (null == parc || null == pent)
{
return(base.OpenEntry(arc, entry));
}
Stream input = null;
try
{
long part_offset = 0;
long entry_start = pent.Offset;
long entry_end = pent.Offset + pent.AlignedSize;
foreach (var part in parc.Parts)
{
long part_end_offset = part_offset + part.MaxOffset;
if (entry_start < part_end_offset)
{
uint part_size = (uint)Math.Min(entry_end - entry_start, part_end_offset - entry_start);
var entry_part = part.CreateStream(entry_start - part_offset, part_size);
if (input != null)
{
input = new ConcatStream(input, entry_part);
}
else
{
input = entry_part;
}
entry_start += part_size;
if (entry_start >= entry_end)
{
break;
}
}
part_offset = part_end_offset;
}
if (null == input)
{
return(Stream.Null);
}
if (parc.XorKey != 0)
{
input = new XoredStream(input, parc.XorKey);
}
input = parc.DecryptEntry(input, pent);
if (pent.Size < pent.AlignedSize)
{
input = new LimitStream(input, pent.Size);
}
if (pent.IsPacked)
{
input = new ZLibStream(input, CompressionMode.Decompress);
}
return(input);
}
catch
{
if (input != null)
{
input.Dispose();
}
throw;
}
}
