github.com/cellofellow/gopkg@v0.0.0-20140722061823-eec0544a62ad/database/sqlite3/_example/mod_regexp/sqlite3_mod_regexp.c (about) 1 #include <pcre.h> 2 #include <string.h> 3 #include <stdio.h> 4 #include <sqlite3ext.h> 5 6 SQLITE_EXTENSION_INIT1 7 static void regexp_func(sqlite3_context *context, int argc, sqlite3_value **argv) { 8 if (argc >= 2) { 9 const char *target = (const char *)sqlite3_value_text(argv[1]); 10 const char *pattern = (const char *)sqlite3_value_text(argv[0]); 11 const char* errstr = NULL; 12 int erroff = 0; 13 int vec[500]; 14 int n, rc; 15 pcre* re = pcre_compile(pattern, 0, &errstr, &erroff, NULL); 16 rc = pcre_exec(re, NULL, target, strlen(target), 0, 0, vec, 500); 17 if (rc <= 0) { 18 sqlite3_result_error(context, errstr, 0); 19 return; 20 } 21 sqlite3_result_int(context, 1); 22 } 23 } 24 25 #ifdef _WIN32 26 __declspec(dllexport) 27 #endif 28 int sqlite3_extension_init(sqlite3 *db, char **errmsg, const sqlite3_api_routines *api) { 29 SQLITE_EXTENSION_INIT2(api); 30 return sqlite3_create_function(db, "regexp", 2, SQLITE_UTF8, (void*)db, regexp_func, NULL, NULL); 31 }