contrib/zlib/zlib.h

87     z_const Bytef *next_in;     /* next input byte */
88     uInt     avail_in;  /* number of bytes available at next_in */
134      The application must update next_in and avail_in when avail_in has dropped
260   - Compress more input starting at next_in and update next_in and avail_in
262     enough room in the output buffer), next_in and avail_in are updated and
355   if next_in or next_out was Z_NULL or the state was inadvertently written over
381    next_in, avail_in, zalloc, zfree and opaque must be initialized before by
394    Actual decompression will be done by inflate().  So next_in, and avail_in,
411   - Decompress more input starting at next_in and update next_in and avail_in
413     enough room in the output buffer), then next_in and avail_in are updated
444   number of unused bits in the last byte taken from strm->next_in, plus 64 if
510   next_in or next_out was Z_NULL, or the state was inadvertently written over
838    fields next_in, avail_in, zalloc, zfree and opaque must be initialized
882    will be done by inflate().  (So next_in and avail_in may be modified, but
993    from next_in.  This function should only be used with raw inflate, and
1145    setting strm->next_in and strm->avail_in.  If that input is exhausted, then
1146    in() will be called.  Therefore strm->next_in must be initialized before
1147    calling inflateBack().  If strm->next_in is Z_NULL, then in() will be called
1148    immediately for input.  If strm->next_in is not Z_NULL, then strm->avail_in
1150    initially be taken from strm->next_in[0 ..  strm->avail_in - 1].
1157      On return, inflateBack() will set strm->next_in and strm->avail_in to
1164    using strm->next_in which will be Z_NULL only if in() returned an error.  If
1165    strm->next_in is not Z_NULL, then the Z_BUF_ERROR was due to out() returning
1166    non-zero.  (in() will always be called before out(), so strm->next_in is