Mercurial > hg > cdb
diff cdb.h @ 0:2cb46628feec
from cdb-0.75 per http://cr.yp.to/cdb.html,
retrieved 2025-01-03,
contents appear to have been create on 2000-02-19
| author | Henry S. Thompson <ht@inf.ed.ac.uk> |
|---|---|
| date | Wed, 29 Jan 2025 10:50:34 +0000 |
| parents | |
| children | 41b9b6a160d1 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/cdb.h Wed Jan 29 10:50:34 2025 +0000 @@ -0,0 +1,37 @@ +/* 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(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 *,char *,unsigned int); +extern int cdb_find(struct cdb *,char *,unsigned int); + +#define cdb_datapos(c) ((c)->dpos) +#define cdb_datalen(c) ((c)->dlen) + +#endif