215     unsigned len = strm->avail_in;  in read_buf()
220     strm->avail_in  -= len;  in read_buf()
284         if (s->strm->avail_in == 0) break;  in fill_window()
326     } while (s->lookahead < MIN_LOOKAHEAD && s->strm->avail_in != 0);  in fill_window()
579     avail = strm->avail_in;  in deflateSetDictionary()
581     strm->avail_in = dictLength;  in deflateSetDictionary()
606     strm->avail_in = avail;  in deflateSetDictionary()
779         if (strm->avail_in || (s->strstart - s->block_start) + s->lookahead)  in deflateParams()
960         (strm->avail_in != 0 && strm->next_in == Z_NULL) ||  in deflate()
987     } else if (strm->avail_in == 0 && RANK(flush) <= RANK(old_flush) &&  in deflate()
993     if (s->status == FINISH_STATE && strm->avail_in != 0) {  in deflate()
1182     if (strm->avail_in != 0 || s->lookahead != 0 ||  in deflate()
1644     unsigned used = s->strm->avail_in;  in deflate_stored()
1657         if (len > (ulg)left + s->strm->avail_in)  in deflate_stored()
1658             len = left + s->strm->avail_in;     /* limit len to the input */  in deflate_stored()
1669                                 len != left + s->strm->avail_in))  in deflate_stored()
1675         last = flush == Z_FINISH && len == left + s->strm->avail_in ? 1 : 0;  in deflate_stored()
1722     used -= s->strm->avail_in;      /* number of input bytes directly copied */  in deflate_stored()
1760         s->strm->avail_in == 0 && (long)s->strstart == s->block_start)  in deflate_stored()
1765     if (s->strm->avail_in > have && s->block_start >= (long)s->w_size) {  in deflate_stored()
1776     if (have > s->strm->avail_in)  in deflate_stored()
1777         have = s->strm->avail_in;  in deflate_stored()
1798          s->strm->avail_in == 0 && left <= have)) {  in deflate_stored()
1800         last = flush == Z_FINISH && s->strm->avail_in == 0 &&  in deflate_stored()