1 /*
2 +----------------------------------------------------------------------+
3 | PHP Version 7 |
4 +----------------------------------------------------------------------+
5 | Copyright (c) 1997-2016 The PHP Group |
6 +----------------------------------------------------------------------+
7 | This source file is subject to version 3.01 of the PHP license, |
8 | that is bundled with this package in the file LICENSE, and is |
9 | available through the world-wide-web at the following url: |
10 | http://www.php.net/license/3_01.txt |
11 | If you did not receive a copy of the PHP license and are unable to |
12 | obtain it through the world-wide-web, please send a note to |
13 | license@php.net so we can mail you a copy immediately. |
14 +----------------------------------------------------------------------+
15 | Author: Marcus Boerger <helly@php.net> |
16 +----------------------------------------------------------------------+
17 */
18
19 /* $Id$ */
20
21 /* incorporated from D.J.Bernstein's cdb-0.75 (http://cr.yp.to/cdb.html)*/
22
23 #ifndef CDB_H
24 #define CDB_H
25
26 #include "uint32.h"
27
28 #define CDB_HASHSTART 5381
29
30 struct cdb {
31 php_stream *fp;
32 uint32 loop; /* number of hash slots searched under this key */
33 uint32 khash; /* initialized if loop is nonzero */
34 uint32 kpos; /* initialized if loop is nonzero */
35 uint32 hpos; /* initialized if loop is nonzero */
36 uint32 hslots; /* initialized if loop is nonzero */
37 uint32 dpos; /* initialized if cdb_findnext() returns 1 */
38 uint32 dlen; /* initialized if cdb_findnext() returns 1 */
39 };
40
41 uint32 cdb_hash(char *, unsigned int);
42
43 void cdb_free(struct cdb *);
44 void cdb_init(struct cdb *, php_stream *fp);
45
46 int cdb_read(struct cdb *, char *, unsigned int, uint32);
47
48 void cdb_findstart(struct cdb *);
49 int cdb_findnext(struct cdb *, char *, unsigned int);
50 int cdb_find(struct cdb *, char *, unsigned int);
51
52 #define cdb_datapos(c) ((c)->dpos)
53 #define cdb_datalen(c) ((c)->dlen)
54
55 char *cdb_version();
56
57 #endif