d9898ee8 |
1 | #ifndef bdbobj_h |
2 | #define bdbobj_h |
3 | |
4 | /* |
5 | ** Copyright 1998 - 2007 Double Precision, Inc. See COPYING for |
6 | ** distribution information. |
7 | */ |
8 | |
d9898ee8 |
9 | |
10 | #if HAVE_CONFIG_H |
11 | #include "config.h" |
12 | #endif |
13 | |
14 | #include <sys/types.h> |
15 | |
16 | #if HAVE_LIMITS_H |
17 | #include <limits.h> |
18 | #endif |
19 | |
20 | #include <db.h> |
21 | #include <stdlib.h> |
22 | |
23 | #ifdef __cplusplus |
24 | extern "C" { |
25 | #endif |
26 | |
27 | struct bdbobj { |
28 | DB *dbf; |
29 | int has_dbf; |
30 | |
31 | #if DB_VERSION_MAJOR >= 2 |
32 | DBC *dbc; |
33 | int has_dbc; |
34 | #endif |
35 | } ; |
36 | |
37 | void bdbobj_init(struct bdbobj *); |
38 | |
39 | int bdbobj_open(struct bdbobj *, const char *, const char *); |
40 | void bdbobj_close(struct bdbobj *); |
41 | |
42 | #define bdbobj_isopen(p) (!!(p)->has_dbf) |
43 | |
44 | char *bdbobj_fetch(struct bdbobj *, const char *, size_t, size_t *, const char *); |
45 | |
46 | int bdbobj_exists(struct bdbobj *, const char *, size_t); |
47 | int bdbobj_delete(struct bdbobj *, const char *, size_t); |
48 | int bdbobj_store(struct bdbobj *, const char *, size_t, const char *, |
49 | size_t, const char *); |
50 | |
51 | char *bdbobj_firstkey(struct bdbobj *, size_t *, char **, size_t *); |
52 | char *bdbobj_nextkey(struct bdbobj *, size_t *, char **, size_t *); |
53 | |
54 | #ifdef __cplusplus |
55 | } ; |
56 | |
57 | #include <string> |
58 | |
59 | |
60 | class BDbObj { |
61 | struct bdbobj obj; |
62 | |
63 | BDbObj(const BDbObj &); // Undefined |
64 | BDbObj &operator=(const BDbObj &); // Undefined |
65 | char *do_fetch(const char *, size_t, size_t &); |
66 | char *do_query(const char *, size_t, size_t &, const char *); |
67 | |
68 | public: |
69 | BDbObj() { bdbobj_init(&obj); } |
70 | ~BDbObj() { bdbobj_close(&obj); } |
71 | int Open(std::string filename, const char *mode) |
72 | { |
73 | return (bdbobj_open(&obj, filename.c_str(), mode)); |
74 | } |
75 | |
76 | int IsOpen() { return (bdbobj_isopen(&obj)); } |
77 | void Close() { bdbobj_close(&obj); } |
78 | |
79 | std::string Fetch(std::string key, std::string mode) |
80 | { |
81 | size_t l; |
82 | char *p=Fetch(key.c_str(), key.size(), l, mode.c_str()); |
83 | |
84 | if (!p) return ""; |
85 | |
86 | std::string v(p, p+l); |
87 | |
88 | free(p); |
89 | return v; |
90 | } |
91 | |
92 | bool Exists(std::string key) |
93 | { |
94 | return !!Exists(key.c_str(), key.size()); |
95 | } |
96 | |
97 | bool Delete(std::string key) |
98 | { |
99 | return !!Delete(key.c_str(), key.size()); |
100 | } |
101 | |
102 | bool Store(std::string key, std::string val, std::string mode) |
103 | { |
104 | return Store(key.c_str(), key.size(), |
105 | val.c_str(), val.size(), mode.c_str()); |
106 | } |
107 | |
108 | std::string FetchFirstKeyVal(std::string &valRet) |
109 | { |
110 | char *key; |
111 | size_t keyLen; |
112 | char *val; |
113 | size_t valLen; |
114 | |
115 | key=FetchFirstKeyVal(keyLen, val, valLen); |
116 | |
117 | if (!key) |
118 | return ""; |
119 | |
120 | std::string r(key, key+keyLen); |
121 | |
122 | valRet=std::string(val, val+valLen); |
123 | free(val); |
124 | return r; |
125 | } |
126 | |
127 | std::string FetchNextKeyVal(std::string &valRet) |
128 | { |
129 | char *key; |
130 | size_t keyLen; |
131 | char *val; |
132 | size_t valLen; |
133 | |
134 | key=FetchNextKeyVal(keyLen, val, valLen); |
135 | |
136 | if (!key) |
137 | return ""; |
138 | |
139 | std::string r(key, key+keyLen); |
140 | |
141 | valRet=std::string(val, val+valLen); |
142 | free(val); |
143 | return r; |
144 | } |
145 | |
146 | |
147 | |
148 | |
149 | |
150 | char *Fetch(const char *key, size_t keylen, size_t &vallen, |
151 | const char *mode) |
152 | { |
153 | return (bdbobj_fetch(&obj, key, keylen, &vallen, mode)); |
154 | } |
155 | int Exists(const char *key, size_t keylen) |
156 | { |
157 | return (bdbobj_exists(&obj, key, keylen)); |
158 | } |
159 | int Delete(const char *key, size_t keylen) |
160 | { |
161 | return (bdbobj_delete(&obj, key, keylen)); |
162 | } |
163 | |
164 | int Store(const char *key, size_t keylen, const char *val, |
165 | size_t vallen, const char *mode) |
166 | { |
167 | return (bdbobj_store(&obj, key, keylen, val, vallen, |
168 | mode)); |
169 | } |
170 | |
171 | char *FetchFirstKeyVal(size_t &keylen, char *&val, size_t &vallen) |
172 | { |
173 | return (bdbobj_firstkey(&obj, &keylen, &val, &vallen)); |
174 | } |
175 | char *FetchNextKeyVal(size_t &keylen, char *&val, size_t &vallen) |
176 | { |
177 | return (bdbobj_nextkey(&obj, &keylen, &val, &vallen)); |
178 | } |
179 | } ; |
180 | |
181 | #endif |
182 | |
183 | #endif |