488 }
 489 
 490 /* ========================================================================= */
 491 int ZEXPORT deflateResetKeep (strm)
 492     z_streamp strm;
 493 {
 494     deflate_state *s;
 495 
 496     if (deflateStateCheck(strm)) {
 497         return Z_STREAM_ERROR;
 498     }
 499 
 500     strm->total_in = strm->total_out = 0;
 501     strm->msg = Z_NULL; /* use zfree if we ever allocate msg dynamically */
 502     strm->data_type = Z_UNKNOWN;
 503 
 504     s = (deflate_state *)strm->state;
 505     s->pending = 0;
 506     s->pending_out = s->pending_buf;
 507 


 508     if (s->wrap < 0) {
 509         s->wrap = -s->wrap; /* was made negative by deflate(..., Z_FINISH); */
 510     }
 511     s->status =
 512 #ifdef GZIP
 513         s->wrap == 2 ? GZIP_STATE :
 514 #endif
 515         s->wrap ? INIT_STATE : BUSY_STATE;
 516     strm->adler =
 517 #ifdef GZIP
 518         s->wrap == 2 ? crc32(0L, Z_NULL, 0) :
 519 #endif
 520         adler32(0L, Z_NULL, 0);
 521     s->last_flush = Z_NO_FLUSH;
 522 
 523     _tr_init(s);
 524 
 525     return Z_OK;
 526 }
 527 

 488 }
 489 
 490 /* ========================================================================= */
 491 int ZEXPORT deflateResetKeep (strm)
 492     z_streamp strm;
 493 {
 494     deflate_state *s;
 495 
 496     if (deflateStateCheck(strm)) {
 497         return Z_STREAM_ERROR;
 498     }
 499 
 500     strm->total_in = strm->total_out = 0;
 501     strm->msg = Z_NULL; /* use zfree if we ever allocate msg dynamically */
 502     strm->data_type = Z_UNKNOWN;
 503 
 504     s = (deflate_state *)strm->state;
 505     s->pending = 0;
 506     s->pending_out = s->pending_buf;
 507 
 508     s->high_water = 0;      /* reset to its inital value 0 */
 509 
 510     if (s->wrap < 0) {
 511         s->wrap = -s->wrap; /* was made negative by deflate(..., Z_FINISH); */
 512     }
 513     s->status =
 514 #ifdef GZIP
 515         s->wrap == 2 ? GZIP_STATE :
 516 #endif
 517         s->wrap ? INIT_STATE : BUSY_STATE;
 518     strm->adler =
 519 #ifdef GZIP
 520         s->wrap == 2 ? crc32(0L, Z_NULL, 0) :
 521 #endif
 522         adler32(0L, Z_NULL, 0);
 523     s->last_flush = Z_NO_FLUSH;
 524 
 525     _tr_init(s);
 526 
 527     return Z_OK;
 528 }
 529