libkern/zlib/infback.c

8  * Version 2.0 (the 'License'). You may not use this file except in
16  * http://www.opensource.apple.com/apsl/ and read it before using this file.
94    fixed code decoding.  Normally this returns fixed tables from inffixed.h.
95    If BUILDFIXED is defined, then instead this routine builds the tables the
133         /* do this just once */
285     code this;                  /* current decoding table entry */
421                     this = state->lencode[BITS(state->lenbits)];
422                     if ((unsigned)(this.bits) <= bits) break;
425                 if (this.val < 16) {
426                     NEEDBITS(this.bits);
427                     DROPBITS(this.bits);
428                     state->lens[state->have++] = this.val;
431                     if (this.val == 16) {
432                         NEEDBITS(this.bits + 2);
433                         DROPBITS(this.bits);
443                     else if (this.val == 17) {
444                         NEEDBITS(this.bits + 3);
445                         DROPBITS(this.bits);
451                         NEEDBITS(this.bits + 7);
452                         DROPBITS(this.bits);
506                 this = state->lencode[BITS(state->lenbits)];
507                 if ((unsigned)(this.bits) <= bits) break;
510             if (this.op && (this.op & 0xf0) == 0) {
511                 last = this;
513                     this = state->lencode[last.val +
515                     if ((unsigned)(last.bits + this.bits) <= bits) break;
520             DROPBITS(this.bits);
521             state->length = (unsigned)this.val;
524             if (this.op == 0) {
525                 Tracevv((stderr, this.val >= 0x20 && this.val < 0x7f ?
527                         "inflate:         literal 0x%02x\n", this.val));
536             if (this.op & 32) {
543             if (this.op & 64) {
550             state->extra = (unsigned)(this.op) & 15;
560                 this = state->distcode[BITS(state->distbits)];
561                 if ((unsigned)(this.bits) <= bits) break;
564             if ((this.op & 0xf0) == 0) {
565                 last = this;
567                     this = state->distcode[last.val +
569                     if ((unsigned)(last.bits + this.bits) <= bits) break;
574             DROPBITS(this.bits);
575             if (this.op & 64) {
580             state->offset = (unsigned)this.val;
583             state->extra = (unsigned)(this.op) & 15;