2 /* Jim - Sqlite bindings
3 * Copyright 2005 Salvatore Sanfilippo <antirez@invece.org>
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
9 * http://www.apache.org/licenses/LICENSE-2.0
11 * A copy of the license is also included in the source distribution
12 * of Jim, as a TXT file name called LICENSE.
14 * Unless required by applicable law or agreed to in writing, software
15 * distributed under the License is distributed on an "AS IS" BASIS,
16 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
17 * See the License for the specific language governing permissions and
18 * limitations under the License.
26 #include "jimautoconf.h"
28 typedef struct JimSqliteHandle
33 static void JimSqliteDelProc(Jim_Interp
*interp
, void *privData
)
35 JimSqliteHandle
*sh
= privData
;
39 sqlite3_close(sh
->db
);
43 static char *JimSqliteQuoteString(const char *str
, int len
, int *newLenPtr
)
49 for (i
= 0; i
< len
; i
++)
54 d
= buf
= Jim_Alloc(newLen
);
64 static Jim_Obj
*JimSqliteFormatQuery(Jim_Interp
*interp
, Jim_Obj
*fmtObjPtr
,
65 int objc
, Jim_Obj
*const *objv
)
71 fmt
= Jim_GetString(fmtObjPtr
, &fmtLen
);
72 resObjPtr
= Jim_NewStringObj(interp
, "", 0);
77 while (*fmt
!= '%' && fmtLen
) {
81 Jim_AppendString(interp
, resObjPtr
, p
, fmt
- p
);
85 fmtLen
--; /* skip '%' */
88 Jim_FreeNewObj(interp
, resObjPtr
);
89 Jim_SetResultString(interp
, "not enough arguments for all format specifiers", -1);
103 str
= Jim_GetString(objv
[0], &len
);
104 quoted
= JimSqliteQuoteString(str
, len
, &newLen
);
105 Jim_AppendString(interp
, resObjPtr
, quoted
, newLen
);
111 Jim_AppendString(interp
, resObjPtr
, "%", 1);
116 Jim_FreeNewObj(interp
, resObjPtr
);
117 Jim_SetResultFormatted(interp
,
118 "bad field specifier \"%s\", only %%s and %%%% are valid", spec
);
127 /* Calls to [sqlite.open] create commands that are implemented by this
129 static int JimSqliteHandlerCommand(Jim_Interp
*interp
, int argc
, Jim_Obj
*const *argv
)
131 JimSqliteHandle
*sh
= Jim_CmdPrivData(interp
);
133 static const char * const options
[] = {
134 "close", "query", "lastid", "changes", NULL
137 { OPT_CLOSE
, OPT_QUERY
, OPT_LASTID
, OPT_CHANGES
};
140 Jim_WrongNumArgs(interp
, 1, argv
, "method ?args ...?");
143 if (Jim_GetEnum(interp
, argv
[1], options
, &option
, "Sqlite method", JIM_ERRMSG
) != JIM_OK
)
146 if (option
== OPT_CLOSE
) {
148 Jim_WrongNumArgs(interp
, 2, argv
, "");
151 Jim_DeleteCommand(interp
, Jim_String(argv
[0]));
154 else if (option
== OPT_QUERY
) {
156 Jim_Obj
*objPtr
, *rowsListPtr
;
158 const char *query
, *tail
;
159 int columns
, rows
, len
;
162 if (argc
>= 4 && Jim_CompareStringImmediate(interp
, argv
[2], "-null")) {
163 nullstr
= Jim_StrDup(Jim_String(argv
[3]));
168 nullstr
= Jim_StrDup("");
171 Jim_WrongNumArgs(interp
, 2, argv
, "query ?args?");
175 objPtr
= JimSqliteFormatQuery(interp
, argv
[2], argc
- 3, argv
+ 3);
176 if (objPtr
== NULL
) {
180 query
= Jim_GetString(objPtr
, &len
);
181 Jim_IncrRefCount(objPtr
);
182 /* Compile the query into VM code */
183 if (sqlite3_prepare(sh
->db
, query
, len
, &stmt
, &tail
) != SQLITE_OK
) {
184 Jim_DecrRefCount(interp
, objPtr
);
185 Jim_SetResultString(interp
, sqlite3_errmsg(sh
->db
), -1);
189 Jim_DecrRefCount(interp
, objPtr
); /* query no longer needed. */
190 /* Build a list of rows (that are lists in turn) */
191 rowsListPtr
= Jim_NewListObj(interp
, NULL
, 0);
192 Jim_IncrRefCount(rowsListPtr
);
194 columns
= sqlite3_column_count(stmt
);
195 while (sqlite3_step(stmt
) == SQLITE_ROW
) {
198 objPtr
= Jim_NewListObj(interp
, NULL
, 0);
199 for (i
= 0; i
< columns
; i
++) {
200 Jim_Obj
*vObj
= NULL
;
202 Jim_ListAppendElement(interp
, objPtr
,
203 Jim_NewStringObj(interp
, sqlite3_column_name(stmt
, i
), -1));
204 switch (sqlite3_column_type(stmt
, i
)) {
206 vObj
= Jim_NewStringObj(interp
, nullstr
, -1);
209 vObj
= Jim_NewIntObj(interp
, sqlite3_column_int(stmt
, i
));
212 vObj
= Jim_NewDoubleObj(interp
, sqlite3_column_double(stmt
, i
));
216 vObj
= Jim_NewStringObj(interp
,
217 sqlite3_column_blob(stmt
, i
), sqlite3_column_bytes(stmt
, i
));
220 Jim_ListAppendElement(interp
, objPtr
, vObj
);
222 Jim_ListAppendElement(interp
, rowsListPtr
, objPtr
);
227 if (sqlite3_finalize(stmt
) != SQLITE_OK
) {
228 Jim_DecrRefCount(interp
, rowsListPtr
);
229 Jim_SetResultString(interp
, sqlite3_errmsg(sh
->db
), -1);
232 Jim_SetResult(interp
, rowsListPtr
);
233 Jim_DecrRefCount(interp
, rowsListPtr
);
235 else if (option
== OPT_LASTID
) {
237 Jim_WrongNumArgs(interp
, 2, argv
, "");
240 Jim_SetResult(interp
, Jim_NewIntObj(interp
, sqlite3_last_insert_rowid(sh
->db
)));
243 else if (option
== OPT_CHANGES
) {
245 Jim_WrongNumArgs(interp
, 2, argv
, "");
248 Jim_SetResult(interp
, Jim_NewIntObj(interp
, sqlite3_changes(sh
->db
)));
254 static int JimSqliteOpenCommand(Jim_Interp
*interp
, int argc
, Jim_Obj
*const *argv
)
262 Jim_WrongNumArgs(interp
, 1, argv
, "dbname");
265 r
= sqlite3_open(Jim_String(argv
[1]), &db
);
266 if (r
!= SQLITE_OK
) {
267 Jim_SetResultString(interp
, sqlite3_errmsg(db
), -1);
271 /* Create the file command */
272 sh
= Jim_Alloc(sizeof(*sh
));
274 snprintf(buf
, sizeof(buf
), "sqlite.handle%ld", Jim_GetId(interp
));
275 Jim_CreateCommand(interp
, buf
, JimSqliteHandlerCommand
, sh
, JimSqliteDelProc
);
276 Jim_SetResultString(interp
, buf
, -1);
280 int Jim_sqlite3Init(Jim_Interp
*interp
)
282 if (Jim_PackageProvide(interp
, "sqlite3", "1.0", JIM_ERRMSG
))
285 Jim_CreateCommand(interp
, "sqlite3.open", JimSqliteOpenCommand
, NULL
, NULL
);