+ dsize=diffidx-ISAMD_BLOCK_OFFSET_1;
+ /* logf(LOG_LOG,"!! nxt=%d diffidx=%d ds=%d",
+ firstpp->next, diffidx, dsize); */
+
+ if ( (0==firstpp->next) && (dsize <ISAMD_MAX_DICT_LEN))
+ {
+ /* logf(LOG_LOG,"building a dict entry!!"); */
+ assert(firstpp->numKeys < 128);
+ assert(firstpp->numKeys >0);
+ /* actually, 255 is good enough, but sign mismatches... */
+ /* in real life, 4-5 is as much as we can hope for, as long */
+ /* as ISAMD_MAX_DICT_LEN is reasonably small (8) */
+ dictentry[0]=firstpp->numKeys;
+ memcpy(dictentry+1, firstpp->buf+ISAMD_BLOCK_OFFSET_1, dsize);
+ dictlen=dsize+1;
+ }
+ else
+ {
+ if (0==firstpp->pos) /* need to (re)alloc the block */
+ firstpp->pos = isamd_alloc_block(is, firstpp->cat);
+ retpos = save_first_pp( firstpp );
+ isamd_pp_close(firstpp);
+ dictentry[0]=0; /* mark as a real isam */
+ memcpy(dictentry+1, &retpos, sizeof(ISAMD_P));
+ dictlen=sizeof(ISAMD_P)+1;
+ }