internal int InflateEnd()
{
if (blocks != null)
{
blocks.Free();
}
return(Z_OK);
}
internal int InflateInit(int w)
{
z.msg = null;
blocks = null;
// handle undocumented wrap option (no zlib header or check)
wrap = 0;
if (w < 0)
{
w = -w;
}
else if ((w & INFLATE_ANY) != 0)
{
wrap = 4;
w &= ~INFLATE_ANY;
if (w < 48)
{
w &= 15;
}
}
else if ((w & ~31) != 0) // for example, DEF_WBITS + 32
{
wrap = 4; // zlib and gzip wrapped data should be accepted.
w &= 15;
}
else
{
wrap = (w >> 4) + 1;
if (w < 48)
{
w &= 15;
}
}
if (w < 8 || w > 15)
{
InflateEnd();
return(Z_STREAM_ERROR);
}
if (blocks != null && wbits != w)
{
blocks.Free();
blocks = null;
}
// set window size
wbits = w;
this.blocks = new InfBlocks(z, 1 << w);
// reset state
InflateReset();
return(Z_OK);
}
