d9898ee8 |
1 | /* |
2 | ** Copyright 1998 - 1999 Double Precision, Inc. See COPYING for |
3 | ** distribution information. |
4 | */ |
5 | |
6 | #include <string.h> |
7 | #include <stdlib.h> |
8 | #include "bdbobj.h" |
9 | |
10 | char *bdbobj_firstkey(struct bdbobj *obj, size_t *keylen, char **val, |
11 | size_t *vallen) |
12 | { |
13 | DBT key, value; |
14 | |
15 | if (!obj->has_dbf) return (0); |
16 | |
17 | memset(&key, 0, sizeof(key)); |
18 | memset(&value, 0, sizeof(value)); |
19 | |
20 | #if DB_VERSION_MAJOR < 2 |
21 | if ((*obj->dbf->seq)(obj->dbf, &key, &value, R_FIRST)) return (0); |
22 | #else |
23 | if (obj->has_dbc) |
24 | { |
25 | (*obj->dbc->c_close)(obj->dbc); |
26 | obj->has_dbc=0; |
27 | } |
28 | |
29 | #if DB_VERSION_MAJOR > 2 |
30 | if ((*obj->dbf->cursor)(obj->dbf, 0, &obj->dbc, 0)) return (0); |
31 | #else |
32 | #if DB_VERSION_MINOR >= 5 |
33 | if ((*obj->dbf->cursor)(obj->dbf, 0, &obj->dbc, 0)) return (0); |
34 | #else |
35 | if ((*obj->dbf->cursor)(obj->dbf, 0, &obj->dbc)) return (0); |
36 | #endif |
37 | #endif |
38 | obj->has_dbc=1; |
39 | |
40 | if ((*obj->dbc->c_get)(obj->dbc, &key, &value, DB_FIRST)) return (0); |
41 | #endif |
42 | *keylen=key.size; |
43 | *vallen=value.size; |
44 | if ((*val=(char *)malloc(*vallen)) == 0) return (0); |
45 | |
46 | memcpy(*val, value.data, *vallen); |
47 | return ((char *)key.data); |
48 | } |
49 | |
50 | char *bdbobj_nextkey(struct bdbobj *obj, size_t *keylen, char **val, |
51 | size_t *vallen) |
52 | { |
53 | DBT key, value; |
54 | |
55 | if (!obj->has_dbf) return (0); |
56 | |
57 | memset(&key, 0, sizeof(key)); |
58 | memset(&value, 0, sizeof(value)); |
59 | |
60 | #if DB_VERSION_MAJOR < 2 |
61 | if ((*obj->dbf->seq)(obj->dbf, &key, &value, R_NEXT)) return (0); |
62 | #else |
63 | if (!obj->has_dbc) return (0); |
64 | |
65 | if ((*obj->dbc->c_get)(obj->dbc, &key, &value, DB_NEXT)) |
66 | { |
67 | (*obj->dbc->c_close)(obj->dbc); |
68 | obj->has_dbc=0; |
69 | } |
70 | #endif |
71 | |
72 | *keylen=key.size; |
73 | *vallen=value.size; |
74 | if ((*val=(char *)malloc(*vallen + 1)) == 0) return (0); |
75 | |
76 | memcpy(*val, value.data, *vallen); |
77 | (*val)[*vallen]=0; |
78 | |
79 | return ((char *)key.data); |
80 | } |