private void GDIFFCopy(Stream Diff, Copy C)
{
//Name Cmd Followed By Action
//-----------------------------------------------------------
//COPY 249 ushort, ubyte copy <position>, <length>
//COPY 250 ushort, ushort copy <position>, <length>
//COPY 251 ushort, int copy <position>, <length>
//COPY 252 int, ubyte copy <position>, <length>
//COPY 253 int, ushort copy <position>, <length>
//COPY 254 int, int copy <position>, <length>
//COPY 255 long, int copy <position>, <length>
if (C.iBaseOffset <= ushort.MaxValue)
{
if (C.iLength <= byte.MaxValue)
{
Diff.WriteByte(249);
WriteBigEndian(Diff, (ushort)C.iBaseOffset);
Diff.WriteByte((byte)C.iLength);
}
else if (C.iLength <= ushort.MaxValue)
{
Diff.WriteByte(250);
WriteBigEndian(Diff, (ushort)C.iBaseOffset);
WriteBigEndian(Diff, (ushort)C.iLength);
}
else
{
Diff.WriteByte(251);
WriteBigEndian(Diff, (ushort)C.iBaseOffset);
WriteBigEndian(Diff, C.iLength);
}
}
else
{
if (C.iLength <= byte.MaxValue)
{
Diff.WriteByte(252);
WriteBigEndian(Diff, C.iBaseOffset);
Diff.WriteByte((byte)C.iLength);
}
else if (C.iLength <= ushort.MaxValue)
{
Diff.WriteByte(253);
WriteBigEndian(Diff, C.iBaseOffset);
WriteBigEndian(Diff, (ushort)C.iLength);
}
else
{
Diff.WriteByte(254);
WriteBigEndian(Diff, C.iBaseOffset);
WriteBigEndian(Diff, C.iLength);
}
}
}
protected virtual int EmitCopy(int iBasePos, int iLength, Stream BaseFile, AddCopyList List)
{
Copy C = new Copy();
C.iBaseOffset = iBasePos;
C.iLength = iLength;
List.Add(C);
return iLength;
}