cdb.h

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// SPDX-FileCopyrightText: D. J. Bernstein <djb@cr.yp.to>
// SPDX-License-Identifier: CC-PDDC
 
#ifndef CDB_H
#define CDB_H
 
#include <string.h>
#include <rz_types.h>
 
#ifdef __cplusplus
extern "C" {
#endif
 
#define KVLSZ         4
#define CDB_MAX_KEY   0xff
#define CDB_MAX_VALUE 0xffffff
 
#define CDB_HASHSTART 5381
 
struct cdb {
    char *map; /* 0 if no map is available */
    int fd; /* filedescriptor */
    ut32 size; /* initialized if map is nonzero */
    ut32 loop; /* number of hash slots searched under this key */
    ut32 khash; /* initialized if loop is nonzero */
    ut32 kpos; /* initialized if loop is nonzero */
    ut32 hpos; /* initialized if loop is nonzero */
    ut32 hslots; /* initialized if loop is nonzero */
    ut32 dpos; /* initialized if cdb_findnext() returns 1 */
    ut32 dlen; /* initialized if cdb_findnext() returns 1 */
};
 
/* TODO THIS MUST GTFO! */
bool cdb_getkvlen(struct cdb *db, ut32 *klen, ut32 *vlen, ut32 pos);
void cdb_free(struct cdb *);
bool cdb_init(struct cdb *, int fd);
void cdb_findstart(struct cdb *);
bool cdb_read(struct cdb *, char *, unsigned int, ut32);
int cdb_findnext(struct cdb *, ut32 u, const char *, ut32);
 
#define cdb_datapos(c) ((c)->dpos)
#define cdb_datalen(c) ((c)->dlen)
 
#ifdef __cplusplus
}
#endif
 
#endif