Iterate(InterationCallback Callback, UInt32 InterationSize)
{
if (InterationSize > 0)
{
if ((this._CurrentElement == UInt32.MaxValue) ||
((this._Position + InterationSize) > this._TotalSize) ||
!this._IsInitialized)
{
return(-1); // EOS
}
while (true)
{
{
UInt32 fragmentSize;
Debug.Assert(this._CurrentElementSize >= this._CurrentElementOffset);
fragmentSize = Math.Min(InterationSize, (this._CurrentElementSize - this._CurrentElementOffset));
this._Position += fragmentSize;
if (fragmentSize > 0)
{
if (Callback != null)
{
var status = Callback((this._CurrentElementBufferBase + this._CurrentElementOffset), ref fragmentSize);
if (status != 0)
{
return(status);
}
}
this._CurrentElementOffset += fragmentSize;
InterationSize -= fragmentSize;
}
}
if ((InterationSize > 0) || ((this._CurrentElementOffset == this._CurrentElementSize) && this._TotalSize > this._Position))
{
this._CurrentElement++;
this._CurrentElementOffset = 0;
if (this._CurrentElement >= this._NumberOfElements)
{
return(-1); // EOS
}
this._CurrentElementSize = Math.Min(this._ElementsDescs[this._CurrentElement].Size, (this._TotalSize - this._Position));
this._CurrentElementBufferBase = this._ElementsDescs[this._CurrentElement].ElementBaseAddress;
}
else
{
break;
}
}
}
return(0);
}
Put(byte *SrcPtr, UInt32 Size)
{
if (!this._IsInitialized)
{
return(false);
}
this._MoveInteratorState = SrcPtr;
InterationCallback moveToBufferIterator = this.MoveToBufferIterator;
return(this.Iterate(moveToBufferIterator, Size) == 0);
}
Pull(byte *ResultPtr, UInt32 ResultSize)
{
if (!this._IsInitialized)
{
return(false);
}
this._MoveInteratorState = ResultPtr;
InterationCallback moveFromBufferIterator = this.MoveFromBufferIterator;
return(this.Iterate(moveFromBufferIterator, ResultSize) == 0);
}