| 1 | #ifndef gdbmobj_h |
| 2 | #define gdbmobj_h |
| 3 | |
| 4 | /* |
| 5 | ** Copyright 1998 - 2007 Double Precision, Inc. See COPYING for |
| 6 | ** distribution information. |
| 7 | */ |
| 8 | |
| 9 | static const char gdbmobj_h_rcsid[]="$Id: gdbmobj.h,v 1.7 2007/03/01 04:32:04 mrsam Exp $"; |
| 10 | |
| 11 | #include "gdbm.h" |
| 12 | |
| 13 | #include <stdlib.h> |
| 14 | |
| 15 | #ifdef __cplusplus |
| 16 | extern "C" { |
| 17 | #endif |
| 18 | |
| 19 | struct gdbmobj { |
| 20 | GDBM_FILE dbf; |
| 21 | int has_dbf; |
| 22 | char *prev_key; |
| 23 | size_t prev_key_len; |
| 24 | } ; |
| 25 | |
| 26 | void gdbmobj_init(struct gdbmobj *); |
| 27 | |
| 28 | int gdbmobj_open(struct gdbmobj *, const char *, const char *); |
| 29 | void gdbmobj_close(struct gdbmobj *); |
| 30 | |
| 31 | #define gdbmobj_isopen(p) (!!(p)->has_dbf) |
| 32 | |
| 33 | char *gdbmobj_fetch(struct gdbmobj *, const char *, size_t, size_t *, const char *); |
| 34 | int gdbmobj_exists(struct gdbmobj *, const char *, size_t); |
| 35 | int gdbmobj_delete(struct gdbmobj *, const char *, size_t); |
| 36 | int gdbmobj_store(struct gdbmobj *, const char *, size_t, const char *, |
| 37 | size_t, const char *); |
| 38 | |
| 39 | char *gdbmobj_firstkey(struct gdbmobj *, size_t *, char **, size_t *); |
| 40 | char *gdbmobj_nextkey(struct gdbmobj *, size_t *, char **, size_t *); |
| 41 | |
| 42 | #ifdef __cplusplus |
| 43 | } ; |
| 44 | |
| 45 | #include <string> |
| 46 | |
| 47 | class GdbmObj { |
| 48 | |
| 49 | struct gdbmobj obj; |
| 50 | |
| 51 | GdbmObj(const GdbmObj &); // Undefined |
| 52 | GdbmObj &operator=(const GdbmObj &); // Undefined |
| 53 | |
| 54 | public: |
| 55 | GdbmObj() { gdbmobj_init(&obj); } |
| 56 | ~GdbmObj() { gdbmobj_close(&obj); } |
| 57 | int Open(std::string filename, const char *mode) |
| 58 | { |
| 59 | return ( gdbmobj_open(&obj, filename.c_str(), mode)); |
| 60 | } |
| 61 | |
| 62 | int IsOpen() { return (gdbmobj_isopen(&obj)); } |
| 63 | void Close() { gdbmobj_close(&obj); } |
| 64 | |
| 65 | std::string Fetch(std::string key, std::string mode) |
| 66 | { |
| 67 | size_t l; |
| 68 | char *p=Fetch(key.c_str(), key.size(), l, mode.c_str()); |
| 69 | |
| 70 | if (!p) return ""; |
| 71 | |
| 72 | std::string v(p, p+l); |
| 73 | |
| 74 | free(p); |
| 75 | return v; |
| 76 | } |
| 77 | |
| 78 | bool Exists(std::string key) |
| 79 | { |
| 80 | return !!Exists(key.c_str(), key.size()); |
| 81 | } |
| 82 | |
| 83 | bool Delete(std::string key) |
| 84 | { |
| 85 | return !!Delete(key.c_str(), key.size()); |
| 86 | } |
| 87 | |
| 88 | int Store(std::string key, std::string val, std::string mode) |
| 89 | { |
| 90 | return Store(key.c_str(), key.size(), |
| 91 | val.c_str(), val.size(), mode.c_str()); |
| 92 | } |
| 93 | |
| 94 | std::string FetchFirstKeyVal(std::string &valRet) |
| 95 | { |
| 96 | char *key; |
| 97 | size_t keyLen; |
| 98 | char *val; |
| 99 | size_t valLen; |
| 100 | |
| 101 | key=FetchFirstKeyVal(keyLen, val, valLen); |
| 102 | |
| 103 | if (!key) |
| 104 | return ""; |
| 105 | |
| 106 | std::string r(key, key+keyLen); |
| 107 | |
| 108 | valRet=std::string(val, val+valLen); |
| 109 | free(val); |
| 110 | return r; |
| 111 | } |
| 112 | |
| 113 | std::string FetchNextKeyVal(std::string &valRet) |
| 114 | { |
| 115 | char *key; |
| 116 | size_t keyLen; |
| 117 | char *val; |
| 118 | size_t valLen; |
| 119 | |
| 120 | key=FetchNextKeyVal(keyLen, val, valLen); |
| 121 | |
| 122 | if (!key) |
| 123 | return ""; |
| 124 | |
| 125 | std::string r(key, key+keyLen); |
| 126 | |
| 127 | valRet=std::string(val, val+valLen); |
| 128 | free(val); |
| 129 | return r; |
| 130 | } |
| 131 | |
| 132 | |
| 133 | char *Fetch(const char *key, size_t keylen, |
| 134 | size_t &valuelen, const char *mode) |
| 135 | { |
| 136 | return (gdbmobj_fetch(&obj, key, keylen, |
| 137 | &valuelen, mode)); |
| 138 | } |
| 139 | |
| 140 | int Exists(const char *key, size_t keylen) |
| 141 | { |
| 142 | return (gdbmobj_exists(&obj, key, keylen)); |
| 143 | } |
| 144 | |
| 145 | int Delete(const char *key, size_t keylen) |
| 146 | { |
| 147 | return (gdbmobj_delete(&obj, key, keylen)); |
| 148 | } |
| 149 | |
| 150 | int Store(const char *key, size_t keylen, |
| 151 | const char *value, size_t valuelen, |
| 152 | const char *mode) |
| 153 | { |
| 154 | return (gdbmobj_store(&obj, key, keylen, value, |
| 155 | valuelen, mode)); |
| 156 | } |
| 157 | |
| 158 | char *FetchFirstKeyVal(size_t &keylen, char *&val, size_t &vallen) |
| 159 | { |
| 160 | return (gdbmobj_firstkey(&obj, &keylen, &val, &vallen)); |
| 161 | } |
| 162 | char *FetchNextKeyVal(size_t &keylen, char *&val, size_t &vallen) |
| 163 | { |
| 164 | return (gdbmobj_nextkey(&obj, &keylen, &val, &vallen)); |
| 165 | } |
| 166 | } ; |
| 167 | |
| 168 | #endif |
| 169 | |
| 170 | #endif |