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43 lines
1.4 KiB
C
43 lines
1.4 KiB
C
#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 h,unsigned char c);
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extern uint32 cdb_hash(const unsigned char *buf,unsigned long int len);
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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 *,unsigned char *,unsigned long int,uint32);
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extern void cdb_findstart(struct cdb *);
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extern int cdb_findnext(struct cdb *,const unsigned char *,unsigned long int);
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extern int cdb_find(struct cdb *,const unsigned char *,unsigned long int);
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extern int cdb_firstkey(struct cdb *c,uint32 *kpos);
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extern int cdb_nextkey(struct cdb *c,uint32 *kpos);
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extern int cdb_successor(struct cdb *c,const unsigned char *,unsigned long 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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#define cdb_keypos(c) ((c)->kpos)
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#define cdb_keylen(c) ((c)->dpos-(c)->kpos)
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#endif
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