| 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 | |
| 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 |