public void LzmaUncompress(SharedSettings s)
{
if(s.Enc.Length != 1)
throw new ArgumentException("Settings must contain a single byte.", "propLength");
if(s.Variant == 1)
{
LZMA.CLzma2Dec dec = new LZMA.CLzma2Dec();
dec.Lzma2Dec_Construct();
var res = dec.Lzma2Dec_Allocate(s.Enc[0], LZMA.ISzAlloc.SmallAlloc);
if(res != LZMA.SZ_OK)
throw new Exception("Lzma2Dec_Allocate failed: " + res);
dec.Lzma2Dec_Init();
for(; ; )
{
long s_WrittenSize = s.Dst.Length - s.Dst.Offset;
long s_UsedSize = s.Src.Length - s.Src.Offset;
LZMA.ELzmaStatus status;
res = dec.Lzma2Dec_DecodeToBuf(P.From(s.Dst), ref s_WrittenSize, P.From(s.Src), ref s_UsedSize, LZMA.ELzmaFinishMode.LZMA_FINISH_END, out status);
if(res != LZMA.SZ_OK)
throw new Exception("Lzma2Dec_DecodeToBuf failed: " + res);
s.Dst.Offset += checked((int)s_WrittenSize);
s.Src.Offset += checked((int)s_UsedSize);
if(status == LZMA.ELzmaStatus.LZMA_STATUS_NEEDS_MORE_INPUT
|| status == LZMA.ELzmaStatus.LZMA_STATUS_NOT_FINISHED)
continue;
if(status == LZMA.ELzmaStatus.LZMA_STATUS_FINISHED_WITH_MARK)
{
if(s.ActualWriteEndMark == 0)
throw new Exception("Finished with mark even though we didn't want to write one.");
break;
}
if(status == LZMA.ELzmaStatus.LZMA_STATUS_MAYBE_FINISHED_WITHOUT_MARK)
{
if(s.ActualWriteEndMark != 0)
break;
}
throw new NotSupportedException("Unsupported status case: " + status);
}
s.WrittenSize = s.Dst.Offset;
s.Dst.Offset = 0;
s.UsedSize = s.Src.Offset;
s.Src.Offset = 0;
}
else
{
long s_WrittenSize = s.Dst.Length;
long s_UsedSize = s.Src.Length;
LZMA.ELzmaStatus status;
var res = LZMA.CLzma2Dec.Lzma2Decode(
P.From(s.Dst), ref s_WrittenSize,
P.From(s.Src), ref s_UsedSize,
s.Enc[0], LZMA.ELzmaFinishMode.LZMA_FINISH_END, out status,
LZMA.ISzAlloc.SmallAlloc);
if(res != LZMA.SZ_OK)
throw new Exception("LzmaUncompress failed: " + res);
switch(status)
{
case LZMA.ELzmaStatus.LZMA_STATUS_NEEDS_MORE_INPUT:
throw new EndOfStreamException();
case LZMA.ELzmaStatus.LZMA_STATUS_FINISHED_WITH_MARK:
if(s.ActualWriteEndMark == 0)
throw new InvalidDataException();
break;
case LZMA.ELzmaStatus.LZMA_STATUS_MAYBE_FINISHED_WITHOUT_MARK:
if(s.ActualWriteEndMark != 0)
throw new InvalidDataException();
break;
default:
throw new Exception(status.ToString());
}
s.WrittenSize = checked((int)s_WrittenSize);
s.UsedSize = checked((int)s_UsedSize);
}
}
public void LzmaUncompress(SharedSettings s)
{
if (s.Enc.Length != 1)
{
throw new ArgumentException("Settings must contain a single byte.", "propLength");
}
if (s.Variant == 1)
{
LZMA.CLzma2Dec dec = new LZMA.CLzma2Dec();
dec.Lzma2Dec_Construct();
var res = dec.Lzma2Dec_Allocate(s.Enc[0], LZMA.ISzAlloc.SmallAlloc);
if (res != LZMA.SZ_OK)
{
throw new Exception("Lzma2Dec_Allocate failed: " + res);
}
dec.Lzma2Dec_Init();
for (;;)
{
long s_WrittenSize = s.Dst.Length - s.Dst.Offset;
long s_UsedSize = s.Src.Length - s.Src.Offset;
LZMA.ELzmaStatus status;
res = dec.Lzma2Dec_DecodeToBuf(P.From(s.Dst), ref s_WrittenSize, P.From(s.Src), ref s_UsedSize, LZMA.ELzmaFinishMode.LZMA_FINISH_END, out status);
if (res != LZMA.SZ_OK)
{
throw new Exception("Lzma2Dec_DecodeToBuf failed: " + res);
}
s.Dst.Offset += checked ((int)s_WrittenSize);
s.Src.Offset += checked ((int)s_UsedSize);
if (status == LZMA.ELzmaStatus.LZMA_STATUS_NEEDS_MORE_INPUT ||
status == LZMA.ELzmaStatus.LZMA_STATUS_NOT_FINISHED)
{
continue;
}
if (status == LZMA.ELzmaStatus.LZMA_STATUS_FINISHED_WITH_MARK)
{
if (s.ActualWriteEndMark == 0)
{
throw new Exception("Finished with mark even though we didn't want to write one.");
}
break;
}
if (status == LZMA.ELzmaStatus.LZMA_STATUS_MAYBE_FINISHED_WITHOUT_MARK)
{
if (s.ActualWriteEndMark != 0)
{
break;
}
}
throw new NotSupportedException("Unsupported status case: " + status);
}
s.WrittenSize = s.Dst.Offset;
s.Dst.Offset = 0;
s.UsedSize = s.Src.Offset;
s.Src.Offset = 0;
}
else
{
long s_WrittenSize = s.Dst.Length;
long s_UsedSize = s.Src.Length;
LZMA.ELzmaStatus status;
var res = LZMA.CLzma2Dec.Lzma2Decode(
P.From(s.Dst), ref s_WrittenSize,
P.From(s.Src), ref s_UsedSize,
s.Enc[0], LZMA.ELzmaFinishMode.LZMA_FINISH_END, out status,
LZMA.ISzAlloc.SmallAlloc);
if (res != LZMA.SZ_OK)
{
throw new Exception("LzmaUncompress failed: " + res);
}
switch (status)
{
case LZMA.ELzmaStatus.LZMA_STATUS_NEEDS_MORE_INPUT:
throw new EndOfStreamException();
case LZMA.ELzmaStatus.LZMA_STATUS_FINISHED_WITH_MARK:
if (s.ActualWriteEndMark == 0)
{
throw new InvalidDataException();
}
break;
case LZMA.ELzmaStatus.LZMA_STATUS_MAYBE_FINISHED_WITHOUT_MARK:
if (s.ActualWriteEndMark != 0)
{
throw new InvalidDataException();
}
break;
default:
throw new Exception(status.ToString());
}
s.WrittenSize = checked ((int)s_WrittenSize);
s.UsedSize = checked ((int)s_UsedSize);
}
}
