+ wrbuf_rewind(w);
+ if (zebra_sort_read(zh->reg->sort_index, 0, w))
+ {
+ /* consider each sort entry and take lowest/highest one
+ of the one as sorting key depending on whether sort is
+ ascending/descending */
+ int off = 0;
+ while (off != wrbuf_len(w))
+ {
+ size_t l = strlen(wrbuf_buf(w)+off);
+ assert(off < wrbuf_len(w));
+
+ if (l >= SORT_IDX_ENTRYSIZE)
+ l = SORT_IDX_ENTRYSIZE-1;
+ if ( (off == 0)
+ || (criteria[i].relation == 'A'
+ && strcmp(wrbuf_buf(w)+off, this_entry_buf) < 0)
+ || (criteria[i].relation == 'D'
+ && strcmp(wrbuf_buf(w)+off, this_entry_buf) > 0)
+ )
+ {
+ memcpy(this_entry_buf, wrbuf_buf(w)+off, l);
+ this_entry_buf[l] = '\0';
+ }
+ off += 1 + strlen(wrbuf_buf(w)+off);
+ }
+ }