1 /* $Id: cdb.h 106 2003-12-12 17:36:49Z werner $
2 * public cdb include file
4 * This file is a part of tinycdb package by Michael Tokarev, mjt@corpit.ru.
7 * Taken from tinycdb-0.73. By Werner Koch <wk@gnupg.org> 2003-12-12.
10 #ifndef TINYCDB_VERSION
11 #define TINYCDB_VERSION 0.73
13 typedef unsigned int cdbi_t; /*XXX should be at least 32 bits long */
16 cdbi_t cdb_hash(const void *buf, cdbi_t len);
17 cdbi_t cdb_unpack(const unsigned char buf[4]);
18 void cdb_pack(cdbi_t num, unsigned char buf[4]);
21 int cdb_fd; /* file descriptor */
23 #ifdef HAVE_W32_SYSTEM
24 void *cdb_mapping; /* Mapping handle. */
26 cdbi_t cdb_fsize; /* datafile size */
27 const unsigned char *cdb_mem; /* mmap'ed file memory */
28 cdbi_t cdb_vpos, cdb_vlen; /* found data */
29 cdbi_t cdb_kpos, cdb_klen; /* found key (only set if cdb_findinit
30 was called with KEY set to NULL). */
33 #define cdb_datapos(c) ((c)->cdb_vpos)
34 #define cdb_datalen(c) ((c)->cdb_vlen)
35 #define cdb_keypos(c) ((c)->cdb_kpos)
36 #define cdb_keylen(c) ((c)->cdb_klen)
37 #define cdb_fileno(c) ((c)->cdb_fd)
39 int cdb_init(struct cdb *cdbp, int fd);
40 void cdb_free(struct cdb *cdbp);
42 int cdb_read(const struct cdb *cdbp,
43 void *buf, unsigned len, cdbi_t pos);
44 int cdb_find(struct cdb *cdbp, const void *key, unsigned klen);
49 const unsigned char *cdb_htp, *cdb_htab, *cdb_htend;
55 int cdb_findinit(struct cdb_find *cdbfp, struct cdb *cdbp,
56 const void *key, cdbi_t klen);
57 int cdb_findnext(struct cdb_find *cdbfp);
59 /* old simple interface */
60 /* open file using standard routine, then: */
61 int cdb_seek(int fd, const void *key, unsigned klen, cdbi_t *dlenp);
62 int cdb_bread(int fd, void *buf, int len);
67 int cdb_fd; /* file descriptor */
69 cdbi_t cdb_dpos; /* data position so far */
70 cdbi_t cdb_rcnt; /* record count so far */
71 char cdb_buf[4096]; /* write buffer */
72 char *cdb_bpos; /* current buf position */
73 struct cdb_rl *cdb_rec[256]; /* list of arrays of record infos */
78 int cdb_make_start(struct cdb_make *cdbmp, int fd);
79 int cdb_make_add(struct cdb_make *cdbmp,
80 const void *key, cdbi_t klen,
81 const void *val, cdbi_t vlen);
82 int cdb_make_exists(struct cdb_make *cdbmp,
83 const void *key, cdbi_t klen);
84 int cdb_make_put(struct cdb_make *cdbmp,
85 const void *key, cdbi_t klen,
86 const void *val, cdbi_t vlen,
88 #define CDB_PUT_ADD 0 /* add unconditionnaly, like cdb_make_add() */
89 #define CDB_PUT_REPLACE 1 /* replace: do not place to index OLD record */
90 #define CDB_PUT_INSERT 2 /* add only if not already exists */
91 #define CDB_PUT_WARN 3 /* add unconditionally but ret. 1 if exists */
92 int cdb_make_finish(struct cdb_make *cdbmp);
94 #endif /* include guard */