2014-11-19 00:25:21 +08:00
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/* Public domain. */
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#ifndef CDB_H
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#define CDB_H
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#include "uint32.h"
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#define CDB_HASHSTART 5381
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extern uint32 cdb_hashadd(uint32,unsigned char);
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extern uint32 cdb_hash(char *,unsigned int);
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struct cdb {
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char *map; /* 0 if no map is available */
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int fd;
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uint32 size; /* initialized if map is nonzero */
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uint32 loop; /* number of hash slots searched under this key */
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uint32 khash; /* initialized if loop is nonzero */
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uint32 kpos; /* initialized if loop is nonzero */
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uint32 hpos; /* initialized if loop is nonzero */
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uint32 hslots; /* initialized if loop is nonzero */
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uint32 dpos; /* initialized if cdb_findnext() returns 1 */
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uint32 dlen; /* initialized if cdb_findnext() returns 1 */
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} ;
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extern void cdb_free(struct cdb *);
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extern void cdb_init(struct cdb *,int fd);
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extern int cdb_read(struct cdb *,char *,unsigned int,uint32);
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extern void cdb_findstart(struct cdb *);
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extern int cdb_findnext(struct cdb *,char *,unsigned int);
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extern int cdb_find(struct cdb *,char *,unsigned int);
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#define cdb_datapos(c) ((c)->dpos)
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#define cdb_datalen(c) ((c)->dlen)
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#endif
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