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tag: djb/1.03
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38 lines (28 sloc) 1.111 kb
/* Public domain. */
#ifndef CDB_H
#define CDB_H
#include "uint32.h"
#define CDB_HASHSTART 5381
extern uint32 cdb_hashadd(uint32,unsigned char);
extern uint32 cdb_hash(const char *,unsigned int);
struct cdb {
char *map; /* 0 if no map is available */
int fd;
uint32 size; /* initialized if map is nonzero */
uint32 loop; /* number of hash slots searched under this key */
uint32 khash; /* initialized if loop is nonzero */
uint32 kpos; /* initialized if loop is nonzero */
uint32 hpos; /* initialized if loop is nonzero */
uint32 hslots; /* initialized if loop is nonzero */
uint32 dpos; /* initialized if cdb_findnext() returns 1 */
uint32 dlen; /* initialized if cdb_findnext() returns 1 */
} ;
extern void cdb_free(struct cdb *);
extern void cdb_init(struct cdb *,int fd);
extern int cdb_read(struct cdb *,char *,unsigned int,uint32);
extern void cdb_findstart(struct cdb *);
extern int cdb_findnext(struct cdb *,const char *,unsigned int);
extern int cdb_find(struct cdb *,const char *,unsigned int);
#define cdb_datapos(c) ((c)->dpos)
#define cdb_datalen(c) ((c)->dlen)
#endif
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