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#include "cdb.h"
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static int doit(struct cdb *c,uint32 *kpos) {
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unsigned char buf[8];
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uint32 eod,klen;
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if (cdb_read(c,buf,4,0)) return -1;
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uint32_unpack(buf,&eod);
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if (eod<8 || eod-8<*kpos) return 0;
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c->kpos=*kpos+8;
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if (c->kpos<*kpos) return -1; /* wraparound */
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cdb_findstart(c);
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c->hslots=1;
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if (cdb_read(c,buf,8,*kpos) == -1) return -1;
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uint32_unpack(buf,&klen);
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uint32_unpack(buf+4,&c->dlen);
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c->dpos=c->kpos+klen;
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*kpos+=8+klen+c->dlen;
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return 1;
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}
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int cdb_firstkey(struct cdb *c,uint32 *kpos) {
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*kpos=2048;
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return doit(c,kpos);
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}
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int cdb_nextkey(struct cdb *c,uint32 *kpos) {
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return doit(c,kpos);
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}
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int cdb_successor(struct cdb *c,const unsigned char *key,unsigned long int klen) {
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int r;
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uint32 kpos;
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if (key) {
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r=cdb_find(c,key,klen);
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if (r<1) return r;
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kpos=c->dpos+c->dlen;
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} else
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kpos=2048;
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return doit(c,&kpos);
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}
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