state = 0;
        for( i = j = 0; i < len; i++ ) {
            switch( state ) {
                case 0:
                    ch = str.charAt( i );
                    if( ch == '%' ) {
                        state = 1;
                    } else {
                        out[j++] = ch;
                    }
                    break;
                case 1: