public void LzmaUncompress(SharedSettings s)
{
switch(s.Variant)
{
case 1:
{
var decoder = new LZMA.CLzmaDec();
decoder.LzmaDec_Construct();
var res = decoder.LzmaDec_Allocate(P.From(s.Enc), checked((uint)s.Enc.Length), LZMA.ISzAlloc.SmallAlloc);
if(res != LZMA.SZ_OK)
throw new Exception("Allocate failed: " + res);
decoder.LzmaDec_Init();
P<byte> dstPtr = P.From(s.Dst);
long s_WrittenSize = s.Dst.Length;
s.WrittenSize = 0;
P<byte> srcPtr = P.From(s.Src);
long s_UsedSize = s.Src.Length;
s.UsedSize = 0;
for(; ; )
{
LZMA.ELzmaStatus status;
res = decoder.LzmaDec_DecodeToBuf(dstPtr, ref s_WrittenSize, srcPtr, ref s_UsedSize, LZMA.ELzmaFinishMode.LZMA_FINISH_END, out status);
if(res != LZMA.SZ_OK)
throw new Exception("DecodeToBuf failed: " + res);
s.WrittenSize += checked((int)s_WrittenSize);
s.UsedSize += checked((int)s_UsedSize);
dstPtr += s_WrittenSize;
srcPtr += s_UsedSize;
s_WrittenSize = dstPtr.mBuffer.Length - dstPtr.mOffset;
s_UsedSize = srcPtr.mBuffer.Length - srcPtr.mOffset;
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);
}
decoder.LzmaDec_Free(LZMA.ISzAlloc.SmallAlloc);
s.WrittenSize = (int)dstPtr.mOffset;
s.UsedSize = (int)srcPtr.mOffset;
}
break;
default:
{
long s_WrittenSize = s.Dst.Length;
long s_UsedSize = s.Src.Length;
var res = LZMA.LzmaUncompress(
P.From(s.Dst), ref s_WrittenSize,
P.From(s.Src), ref s_UsedSize,
P.From(s.Enc), s.Enc.Length);
if(res != LZMA.SZ_OK)
throw new Exception("LzmaUcompress failed: " + res);
s.WrittenSize = (int)s_WrittenSize;
s.UsedSize = (int)s_UsedSize;
}
break;
}
}
public void LzmaUncompress(SharedSettings s)
{
switch (s.Variant)
{
case 1:
{
var decoder = new LZMA.CLzmaDec();
decoder.LzmaDec_Construct();
var res = decoder.LzmaDec_Allocate(P.From(s.Enc), checked ((uint)s.Enc.Length), LZMA.ISzAlloc.SmallAlloc);
if (res != LZMA.SZ_OK)
{
throw new Exception("Allocate failed: " + res);
}
decoder.LzmaDec_Init();
P <byte> dstPtr = P.From(s.Dst);
long s_WrittenSize = s.Dst.Length;
s.WrittenSize = 0;
P <byte> srcPtr = P.From(s.Src);
long s_UsedSize = s.Src.Length;
s.UsedSize = 0;
for (;;)
{
LZMA.ELzmaStatus status;
res = decoder.LzmaDec_DecodeToBuf(dstPtr, ref s_WrittenSize, srcPtr, ref s_UsedSize, LZMA.ELzmaFinishMode.LZMA_FINISH_END, out status);
if (res != LZMA.SZ_OK)
{
throw new Exception("DecodeToBuf failed: " + res);
}
s.WrittenSize += checked ((int)s_WrittenSize);
s.UsedSize += checked ((int)s_UsedSize);
dstPtr += s_WrittenSize;
srcPtr += s_UsedSize;
s_WrittenSize = dstPtr.mBuffer.Length - dstPtr.mOffset;
s_UsedSize = srcPtr.mBuffer.Length - srcPtr.mOffset;
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);
}
decoder.LzmaDec_Free(LZMA.ISzAlloc.SmallAlloc);
s.WrittenSize = (int)dstPtr.mOffset;
s.UsedSize = (int)srcPtr.mOffset;
}
break;
default:
{
long s_WrittenSize = s.Dst.Length;
long s_UsedSize = s.Src.Length;
var res = LZMA.LzmaUncompress(
P.From(s.Dst), ref s_WrittenSize,
P.From(s.Src), ref s_UsedSize,
P.From(s.Enc), s.Enc.Length);
if (res != LZMA.SZ_OK)
{
throw new Exception("LzmaUcompress failed: " + res);
}
s.WrittenSize = (int)s_WrittenSize;
s.UsedSize = (int)s_UsedSize;
}
break;
}
}