+ i->prevsys=key.sysno;
+ i->prevseq=key.seqno;
+ i->prevcmd=*k;
+ }
+ else if ( (i->prevsys==key.sysno) &&
+ (i->prevseq==key.seqno) &&
+ (i->prevcmd!=*k) )
+ { /* same numbers, diff cmd, they cancel out */
+ i->prevsys=0;
+ }
+ else
+ { /* different stuff, write previous, move buf */
+ bp = encode_key_int ( (i->prevsys - i->sysno) * 2 + i->prevcmd, bp);
+ if (i->sysno != i->prevsys)
+ {
+ i->sysno = i->prevsys;
+ i->seqno = 0;
+ }
+ else if (!i->seqno && !i->prevseq && i->cmd == i->prevcmd)
+ {
+ return; /* ??? Filters some sort of duplicates away */
+ /* ??? Can this ever happen -H 15oct02 */
+ }
+ bp = encode_key_int (i->prevseq - i->seqno, bp);
+ i->seqno = i->prevseq;
+ i->cmd = i->prevcmd;
+ if (fwrite (i->buf, bp - i->buf, 1, outf) != 1)
+ {
+ logf (LOG_FATAL|LOG_ERRNO, "fwrite");
+ exit (1);
+ }
+ i->keylen=0; /* ok, it's written, forget it */
+ i->prevsys=key.sysno;
+ i->prevseq=key.seqno;
+ i->prevcmd=*k;
+ }
+}
+
+void encode_key_flush (struct encode_info *i, FILE *outf)
+{ /* flush the last key from i */
+ char *bp =i->buf + i->keylen;
+ if (0==i->prevsys)
+ {
+ return; /* nothing to flush */
+ }
+ *bp++=0;
+ bp = encode_key_int ( (i->prevsys - i->sysno) * 2 + i->prevcmd, bp);
+ if (i->sysno != i->prevsys)
+ {
+ i->sysno = i->prevsys;