cdb.h
#ifndef CDB_H
#define CDB_H
#include "iobuf.h"
#include "sysdeps.h"
struct str;
#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 */
uint32 nextrec; /* initialized if cdb_{first,next}rec() returns 1 */
/* (uint32)-1 means no next record */
};
extern void cdb_free(struct cdb *);
extern void cdb_init(struct cdb *,int fd);
extern int cdb_read(struct cdb *,unsigned 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)
extern int cdb_get(struct cdb*, const struct str* key, struct str* data);
extern int cdb_getnext(struct cdb*, const struct str* key, struct str* data);
struct cdb_hp;
struct cdb_hplist;
struct cdb_make {
unsigned char final[2048];
uint32 count[256];
uint32 start[256];
struct cdb_hplist *head;
struct cdb_hp *split; /* includes space for hash */
struct cdb_hp *hash;
uint32 numentries;
obuf b;
uint32 pos;
int fd;
} ;
extern int cdb_make_start(struct cdb_make *,int);
extern int cdb_make_addbegin(struct cdb_make *,unsigned int,unsigned int);
extern int cdb_make_addend(struct cdb_make *,unsigned int,unsigned int,uint32);
extern int cdb_make_add(struct cdb_make *,const char *,unsigned int,const char *,unsigned int);
extern int cdb_make_finish(struct cdb_make *);
#endif
cdb
Definition: cdb.h:13
obuf
Definition: obuf.h:21
str
Definition: str.h:30
cdb_make
Definition: cdb.h:47