public Octets Update(Octets oin)
{
_legacyIn.Append(oin);
_blenTotol = (uint)(_legacyIn.Count * 8 - _l);
_legacyIn.Reserve(_legacyIn.Count + 3);
_rptr = 0;
_blen = 7;
Octets oout = oin;
oout.Clear();
uint histhead = _histptr;
while (_blenTotol > _blen)
{
_adjustL = _l;
_adjustRptr = _rptr;
uint val = Fetch();
if (val < 0x80000000)
{
if (!Passbits(8))
{
break;
}
_history[_histptr++] = (byte)(val >> 24);
continue;
}
if (val < 0xc0000000)
{
if (!Passbits(9))
{
break;
}
_history[_histptr++] = (byte)(((val >> 23) | 0x80) & 0xff);
continue;
}
uint len;
uint off = 0;
if (val >= 0xf0000000)
{
if (!Passbits(10))
{
break;
}
off = (val >> 22) & 0x3f;
if (off == (uint)Mppc.CtrlOffEob)
{
uint advance = 8 - (_l & 7);
if (advance < 8)
{
if (!Passbits(advance))
{
break;
}
}
oout.Append(_history, (int)histhead, (int)(_histptr - histhead));
if (_histptr == (uint)Mppc.MppcHistLen)
{
_histptr = 0;
}
histhead = _histptr;
continue;
}
}
else if (val >= 0xe0000000)
{
if (!Passbits(12))
{
break;
}
off = ((val >> 20) & 0xff) + 64;
}
else if (val >= 0xc0000000)
{
if (!Passbits(16))
{
break;
}
off = ((val >> 16) & 0x1fff) + 320;
}
val = Fetch();
if (val < 0x80000000)
{
if (!Passbits(1))
{
break;
}
len = 3;
}
else if (val < 0xc0000000)
{
if (!Passbits(4))
{
break;
}
len = 4 | ((val >> 28) & 3);
}
else if (val < 0xe0000000)
{
if (!Passbits(6))
{
break;
}
len = 8 | ((val >> 26) & 7);
}
else if (val < 0xf0000000)
{
if (!Passbits(8))
{
break;
}
len = 16 | ((val >> 24) & 15);
}
else if (val < 0xf8000000)
{
if (!Passbits(10))
{
break;
}
len = 32 | ((val >> 22) & 0x1f);
}
else if (val < 0xfc000000)
{
if (!Passbits(12))
{
break;
}
len = 64 | ((val >> 20) & 0x3f);
}
else if (val < 0xfe000000)
{
if (!Passbits(14))
{
break;
}
len = 128 | ((val >> 18) & 0x7f);
}
else if (val < 0xff000000)
{
if (!Passbits(16))
{
break;
}
len = 256 | ((val >> 16) & 0xff);
}
else if (val < 0xff800000)
{
if (!Passbits(18))
{
break;
}
len = 0x200 | ((val >> 14) & 0x1ff);
}
else if (val < 0xffc00000)
{
if (!Passbits(20))
{
break;
}
len = 0x400 | ((val >> 12) & 0x3ff);
}
else if (val < 0xffe00000)
{
if (!Passbits(22))
{
break;
}
len = 0x800 | ((val >> 10) & 0x7ff);
}
else if (val < 0xfff00000)
{
if (!Passbits(24))
{
break;
}
len = 0x1000 | ((val >> 8) & 0xfff);
}
else
{
_l = _adjustL;
_rptr = _adjustRptr;
break;
}
if (_histptr < off || _histptr + len > (uint)Mppc.MppcHistLen)
{
break;
}
// Array.Copy(history, histptr - off, history, histptr, histptr - histhead);
LameCopy(_history, (int)_histptr, (int)(_histptr - off), (int)len);
// Array.Copy(history, histptr - off, history, histptr, len);
_histptr += len;
}
oout.Append(_history, (int)histhead, (int)(_histptr - histhead));
_legacyIn.Erase(0, (int)_rptr);
return(oout);
}
private OctetsStream(Octets o)
{
Data = o;
}
public static OctetsStream Wrap(Octets o)
{
return(new OctetsStream(o));
}
public OctetsStream(int size)
{
Data = new Octets(size);
}
public OctetsStream()
{
Data = new Octets();
}
public OctetsStream Marshal(Octets o)
{
MarshalSize(o.Count);
Data.Append(o);
return(this);
}
