- if (!p->leaf)
- {
- src = p->bytes + p->offset;
- if (p->offset == p->size)
- cmp=-2 ; /* descend to the last node, as we have
- no value to cmp */
- else
- {
- decode_ptr(&src, &item_len);
-#if ISAMB_DEBUG
- logf(LOG_DEBUG,"isamb_pp_forward (B) on a high node. "
- "ofs=%d sz=%d nxtpos=%d ",
- p->offset,p->size,pos);
- (*pp->isamb->method->log_item)(LOG_DEBUG, src, "");
-#endif
- if (untilbuf)
- cmp=(*pp->isamb->method->compare_item)(untilbuf,src);
- else
- cmp=-2;
- src += item_len;
- decode_ptr(&src,&nxtpos);
- }
- if (cmp<2)
- {
-#if ISAMB_DEBUG
- logf(LOG_DEBUG,"isambb_pp_forward descending l=%d p=%d ",
- pp->level, pos);
-#endif
- descending=1; /* prevent climbing for a while */
- ++(pp->level);
- p = open_block(pp->isamb,pos);
- pp->block[pp->level] = p ;
- pp->total_size += p->size;
- (pp->accessed_nodes[pp->maxlevel - pp->level])++;
- pp->no_blocks++;
- if ( !p->leaf)
- { /* block starts with a pos */
- src = p->bytes + p->offset;
- decode_ptr(&src,&pos);
- p->offset=src-(char*) p->bytes;
-#if ISAMB_DEBUG
- logf(LOG_DEBUG,"isamb_pp_forward: block %d starts with %d",
- p->pos, pos);
-#endif
- }
- } /* descend to the node */
- else
- { /* skip the node */
- p->offset = src - (char*) p->bytes;
- pos=nxtpos;
- (pp->skipped_nodes[pp->maxlevel - pp->level -1])++;
-#if ISAMB_DEBUG
- logf(LOG_DEBUG,
- "isamb_pp_forward: skipping block on level %d, noting "
- "on %d (%d)",
- pp->level, pp->maxlevel - pp->level-1 ,
- pp->skipped_nodes[pp->maxlevel - pp->level-1 ]);
+
+ assert(!p->leaf);
+ src = p->bytes + p->offset;
+
+#if INT_ENCODE
+ c1 = (*b->method->codec.start)();
+ (*b->method->codec.decode)(c1, &file_item, &src);
+#else
+ decode_ptr (&src, &item_len);
+ src += item_len;
+#endif
+ decode_ptr (&src, &pos);
+ p->offset = src - (char*) p->bytes;
+
+ src = p->bytes + p->offset;
+
+ while(1)
+ {
+ if (!untilb || p->offset == p->size)
+ break;
+ assert(p->offset < p->size);
+#if INT_ENCODE
+ src_0 = src;
+ file_item = file_item_buf;
+ (*b->method->codec.reset)(c1);
+ (*b->method->codec.decode)(c1, &file_item, &src);
+ if ((*b->method->compare_item)(untilb, file_item_buf) <= 1)
+ {
+ src = src_0;
+ break;
+ }
+#else
+ decode_item_len(&src, &item_len);
+ if ((*b->method->compare_item)(untilb, src) <= 1)
+ break;
+ src += item_len;