Golang unqlite_kv_cursor_key Beispiele

Beispiel #1

Datei: unqlite.go Projekt: cjl3080434008/redis-land-go

// Key ...
func (curs *Cursor) Key() (key []byte, err error) {
	var n C.int
	res := C.unqlite_kv_cursor_key(curs.handle, nil, &n)
	if res != C.UNQLITE_OK {
		err = UnQLiteError(res)
		return
	}
	key = make([]byte, int(n))
	res = C.unqlite_kv_cursor_key(curs.handle, unsafe.Pointer(&key[0]), &n)
	if res != C.UNQLITE_OK {
		err = UnQLiteError(res)
	}
	return
}

Beispiel #2

Datei: unqlite.go Projekt: LonelyPale/unqlite-2

// get key from the cursor, key can be nil
func (c *Cursor) Key(key []byte) ([]byte, error) {
	var k unsafe.Pointer
	outlen := C.int(len(key))
	if outlen == 0 {
		e := C.unqlite_kv_cursor_key(c.c, nil, &outlen)
		if e != C.UNQLITE_OK {
			return nil, code2Error(e)
		}
		key = make([]byte, outlen)
	}
	k = unsafe.Pointer(&key[0])
	e := C.unqlite_kv_cursor_key(c.c, k, &outlen)
	if e != C.UNQLITE_OK {
		return nil, code2Error(e)
	}
	return key[:outlen], code2Error(e)
}