internal int Flush(int r)
{
for (int i = 0; i < 2; i++)
{
int availableBytesOut;
if (i == 0)
{
availableBytesOut = ((this.readAt <= this.writeAt) ? this.writeAt : this.end) - this.readAt;
}
else
{
availableBytesOut = this.writeAt - this.readAt;
}
if (availableBytesOut == 0)
{
if (r == -5)
{
r = 0;
}
return(r);
}
if (availableBytesOut > this._codec.AvailableBytesOut)
{
availableBytesOut = this._codec.AvailableBytesOut;
}
if ((availableBytesOut != 0) && (r == -5))
{
r = 0;
}
this._codec.AvailableBytesOut -= availableBytesOut;
this._codec.TotalBytesOut += availableBytesOut;
if (this.checkfn != null)
{
this._codec._Adler32 = this.check = Adler.Adler32(this.check, this.window, this.readAt, availableBytesOut);
}
Array.Copy(this.window, this.readAt, this._codec.OutputBuffer, this._codec.NextOut, availableBytesOut);
this._codec.NextOut += availableBytesOut;
this.readAt += availableBytesOut;
if ((this.readAt == this.end) && (i == 0))
{
this.readAt = 0;
if (this.writeAt == this.end)
{
this.writeAt = 0;
}
}
else
{
i++;
}
}
return(r);
}
internal uint Reset()
{
uint check = this.check;
this.mode = InflateBlockMode.TYPE;
this.bitk = 0;
this.bitb = 0;
this.readAt = this.writeAt = 0;
if (this.checkfn != null)
{
this._codec._Adler32 = this.check = Adler.Adler32(0, null, 0, 0);
}
return(check);
}
internal int read_buf(byte[] buf, int start, int size)
{
int availableBytesIn = this.AvailableBytesIn;
if (availableBytesIn > size)
{
availableBytesIn = size;
}
if (availableBytesIn == 0)
{
return(0);
}
this.AvailableBytesIn -= availableBytesIn;
if (this.dstate.WantRfc1950HeaderBytes)
{
this._Adler32 = Adler.Adler32(this._Adler32, this.InputBuffer, this.NextIn, availableBytesIn);
}
Array.Copy(this.InputBuffer, this.NextIn, buf, start, availableBytesIn);
this.NextIn += availableBytesIn;
this.TotalBytesIn += availableBytesIn;
return(availableBytesIn);
}
internal int SetDictionary(byte[] dictionary)
{
int start = 0;
int length = dictionary.Length;
if (this.mode != InflateManagerMode.DICT0)
{
throw new ZlibException("Stream error.");
}
if (Adler.Adler32(1, dictionary, 0, dictionary.Length) != this._codec._Adler32)
{
return(-3);
}
this._codec._Adler32 = Adler.Adler32(0, null, 0, 0);
if (length >= (((int)1) << this.wbits))
{
length = (((int)1) << this.wbits) - 1;
start = dictionary.Length - length;
}
this.blocks.SetDictionary(dictionary, start, length);
this.mode = InflateManagerMode.BLOCKS;
return(0);
}
// Read a new buffer from the current input stream, update the adler32
// and total number of bytes read. All deflate() input goes through
// this function so some applications may wish to modify it to avoid
// allocating a large strm->next_in buffer and copying from it.
// (See also flush_pending()).
internal int read_buf(byte[] buf, int start, int size)
{
int len = AvailableBytesIn;
if (len > size)
{
len = size;
}
if (len == 0)
{
return(0);
}
AvailableBytesIn -= len;
if (dstate.WantRfc1950HeaderBytes)
{
_Adler32 = Adler.Adler32(_Adler32, InputBuffer, NextIn, len);
}
Array.Copy(InputBuffer, NextIn, buf, start, len);
NextIn += len;
TotalBytesIn += len;
return(len);
}
