#include <sqlite3.h>

/*
*/

/*
** Return a pointer to the fts5_api pointer for database connection db.
** If an error occurs, return NULL and leave an error in the database 
** handle (accessible using sqlite3_errcode()/errmsg()).
*/
fts5_api *fts5_api_from_db(sqlite3 *db){
  fts5_api *pRet = 0;
  sqlite3_stmt *pStmt = 0;

  if( SQLITE_OK==sqlite3_prepare(db, "SELECT fts5()", -1, &pStmt, 0)
      && SQLITE_ROW==sqlite3_step(pStmt) 
      && sizeof(pRet)==sqlite3_column_bytes(pStmt, 0)
    ){
    memcpy(&pRet, sqlite3_column_blob(pStmt, 0), sizeof(pRet));
  }
  sqlite3_finalize(pStmt);
  return pRet;
}

int Sqlite3_Init(Tcl_Interp *interp);

static int register_search_extensions(sqlite3 *db, char **pzErr, void *p){
  fts5_api *pApi = fts5_api_from_db(db);

  return SQLITE_OK;
}

static int AppInit(Tcl_Interp *interp) {
  int rc;
  rc = Sqlite3_Init(interp);
  if( rc!=TCL_OK ) return rc;
  sqlite3_auto_extension(register_search_extensions);
  return TCL_OK;
}

int main(int argc, char *argv[]) {
  Tcl_Main(argc, argv, AppInit);
  return 0;
}