lib/zlib_deflate/deflate.c

59 #define DEFLATE_RESET_HOOK(strm) do {} while (0)
60 #define DEFLATE_HOOK(strm, flush, bstate) 0
61 #define DEFLATE_NEED_CHECKSUM(strm) 1
78 static int read_buf        (z_streamp strm, Byte *buf, unsigned size);
189 	z_streamp strm,
207     if (strm == NULL) return Z_STREAM_ERROR;
209     strm->msg = NULL;
213     mem = (deflate_workspace *) strm->workspace;
248     strm->state = (struct internal_state *)s;
249     s->strm = strm;
278     return zlib_deflateReset(strm);
283 	z_streamp strm
288     if (strm == NULL || strm->state == NULL)
291     strm->total_in = strm->total_out = 0;
292     strm->msg = NULL;
293     strm->data_type = Z_UNKNOWN;
295     s = (deflate_state *)strm->state;
303     strm->adler = 1;
309     DEFLATE_RESET_HOOK(strm);
330 	z_streamp strm,
337     if (strm == NULL || strm->state == NULL ||
341     s = (deflate_state *) strm->state;
343     if ((strm->next_in == NULL && strm->avail_in != 0) ||
347     if (strm->avail_out == 0) return Z_BUF_ERROR;
349     s->strm = strm; /* just in case */
369 	    putShortMSB(s, (uInt)(strm->adler >> 16));
370 	    putShortMSB(s, (uInt)(strm->adler & 0xffff));
372 	strm->adler = 1L;
377         flush_pending(strm);
378         if (strm->avail_out == 0) {
393     } else if (strm->avail_in == 0 && flush <= old_flush &&
399     if (s->status == FINISH_STATE && strm->avail_in != 0) {
405     if (strm->avail_in != 0 || s->lookahead != 0 ||
409 	bstate = DEFLATE_HOOK(strm, flush, &bstate) ? bstate :
416 	    if (strm->avail_out == 0) {
444             flush_pending(strm);
445 	    if (strm->avail_out == 0) {
451     Assert(strm->avail_out > 0, "bug2");
457 	putShortMSB(s, (uInt)(strm->adler >> 16));
458 	putShortMSB(s, (uInt)(strm->adler & 0xffff));
460     flush_pending(strm);
476 	z_streamp strm
482     if (strm == NULL || strm->state == NULL) return Z_STREAM_ERROR;
483     s = (deflate_state *) strm->state;
491     strm->state = NULL;
500  * allocating a large strm->next_in buffer and copying from it.
504 	z_streamp strm,
509     unsigned len = strm->avail_in;
514     strm->avail_in  -= len;
516     if (!DEFLATE_NEED_CHECKSUM(strm)) {}
517     else if (!((deflate_state *)(strm->state))->noheader) {
518         strm->adler = zlib_adler32(strm->adler, strm->next_in, len);
520     memcpy(buf, strm->next_in, len);
521     strm->next_in  += len;
522     strm->total_in += len;
801         if (s->strm->avail_in == 0) return;
816         n = read_buf(s->strm, s->window + s->strstart + s->lookahead, more);
831     } while (s->lookahead < MIN_LOOKAHEAD && s->strm->avail_in != 0);
845    flush_pending(s->strm); \
852    if (s->strm->avail_out == 0) return (eof) ? finish_started : need_more; \
1114             if (s->strm->avail_out == 0) return need_more;