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| 1 /* | |
| 2 ** 2006 June 14 | |
| 3 ** | |
| 4 ** The author disclaims copyright to this source code. In place of | |
| 5 ** a legal notice, here is a blessing: | |
| 6 ** | |
| 7 ** May you do good and not evil. | |
| 8 ** May you find forgiveness for yourself and forgive others. | |
| 9 ** May you share freely, never taking more than you give. | |
| 10 ** | |
| 11 ************************************************************************* | |
| 12 ** Test extension for testing the sqlite3_load_extension() function. | |
| 13 */ | |
| 14 #include <string.h> | |
| 15 #include "sqlite3ext.h" | |
| 16 SQLITE_EXTENSION_INIT1 | |
| 17 | |
| 18 /* | |
| 19 ** The half() SQL function returns half of its input value. | |
| 20 */ | |
| 21 static void halfFunc( | |
| 22 sqlite3_context *context, | |
| 23 int argc, | |
| 24 sqlite3_value **argv | |
| 25 ){ | |
| 26 sqlite3_result_double(context, 0.5*sqlite3_value_double(argv[0])); | |
| 27 } | |
| 28 | |
| 29 /* | |
| 30 ** SQL functions to call the sqlite3_status function and return results. | |
| 31 */ | |
| 32 static void statusFunc( | |
| 33 sqlite3_context *context, | |
| 34 int argc, | |
| 35 sqlite3_value **argv | |
| 36 ){ | |
| 37 int op, mx, cur, resetFlag, rc; | |
| 38 if( sqlite3_value_type(argv[0])==SQLITE_INTEGER ){ | |
| 39 op = sqlite3_value_int(argv[0]); | |
| 40 }else if( sqlite3_value_type(argv[0])==SQLITE_TEXT ){ | |
| 41 int i; | |
| 42 const char *zName; | |
| 43 static const struct { | |
| 44 const char *zName; | |
| 45 int op; | |
| 46 } aOp[] = { | |
| 47 { "MEMORY_USED", SQLITE_STATUS_MEMORY_USED }, | |
| 48 { "PAGECACHE_USED", SQLITE_STATUS_PAGECACHE_USED }, | |
| 49 { "PAGECACHE_OVERFLOW", SQLITE_STATUS_PAGECACHE_OVERFLOW }, | |
| 50 { "SCRATCH_USED", SQLITE_STATUS_SCRATCH_USED }, | |
| 51 { "SCRATCH_OVERFLOW", SQLITE_STATUS_SCRATCH_OVERFLOW }, | |
| 52 { "MALLOC_SIZE", SQLITE_STATUS_MALLOC_SIZE }, | |
| 53 }; | |
| 54 int nOp = sizeof(aOp)/sizeof(aOp[0]); | |
| 55 zName = (const char*)sqlite3_value_text(argv[0]); | |
| 56 for(i=0; i<nOp; i++){ | |
| 57 if( strcmp(aOp[i].zName, zName)==0 ){ | |
| 58 op = aOp[i].op; | |
| 59 break; | |
| 60 } | |
| 61 } | |
| 62 if( i>=nOp ){ | |
| 63 char *zMsg = sqlite3_mprintf("unknown status property: %s", zName); | |
| 64 sqlite3_result_error(context, zMsg, -1); | |
| 65 sqlite3_free(zMsg); | |
| 66 return; | |
| 67 } | |
| 68 }else{ | |
| 69 sqlite3_result_error(context, "unknown status type", -1); | |
| 70 return; | |
| 71 } | |
| 72 if( argc==2 ){ | |
| 73 resetFlag = sqlite3_value_int(argv[1]); | |
| 74 }else{ | |
| 75 resetFlag = 0; | |
| 76 } | |
| 77 rc = sqlite3_status(op, &cur, &mx, resetFlag); | |
| 78 if( rc!=SQLITE_OK ){ | |
| 79 char *zMsg = sqlite3_mprintf("sqlite3_status(%d,...) returns %d", op, rc); | |
| 80 sqlite3_result_error(context, zMsg, -1); | |
| 81 sqlite3_free(zMsg); | |
| 82 return; | |
| 83 } | |
| 84 if( argc==2 ){ | |
| 85 sqlite3_result_int(context, mx); | |
| 86 }else{ | |
| 87 sqlite3_result_int(context, cur); | |
| 88 } | |
| 89 } | |
| 90 | |
| 91 /* | |
| 92 ** Extension load function. | |
| 93 */ | |
| 94 #ifdef _WIN32 | |
| 95 __declspec(dllexport) | |
| 96 #endif | |
| 97 int testloadext_init( | |
| 98 sqlite3 *db, | |
| 99 char **pzErrMsg, | |
| 100 const sqlite3_api_routines *pApi | |
| 101 ){ | |
| 102 int nErr = 0; | |
| 103 SQLITE_EXTENSION_INIT2(pApi); | |
| 104 nErr |= sqlite3_create_function(db, "half", 1, SQLITE_ANY, 0, halfFunc, 0, 0); | |
| 105 nErr |= sqlite3_create_function(db, "sqlite3_status", 1, SQLITE_ANY, 0, | |
| 106 statusFunc, 0, 0); | |
| 107 nErr |= sqlite3_create_function(db, "sqlite3_status", 2, SQLITE_ANY, 0, | |
| 108 statusFunc, 0, 0); | |
| 109 return nErr ? SQLITE_ERROR : SQLITE_OK; | |
| 110 } | |
| 111 | |
| 112 /* | |
| 113 ** Another extension entry point. This one always fails. | |
| 114 */ | |
| 115 #ifdef _WIN32 | |
| 116 __declspec(dllexport) | |
| 117 #endif | |
| 118 int testbrokenext_init( | |
| 119 sqlite3 *db, | |
| 120 char **pzErrMsg, | |
| 121 const sqlite3_api_routines *pApi | |
| 122 ){ | |
| 123 char *zErr; | |
| 124 SQLITE_EXTENSION_INIT2(pApi); | |
| 125 zErr = sqlite3_mprintf("broken!"); | |
| 126 *pzErrMsg = zErr; | |
| 127 return 1; | |
| 128 } | |
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Chromium Code Reviews
Issue 2363173002:
[sqlite] Remove obsolete reference version 3.8.7.4. (Closed)
