Пример #1
0
// Stores data for a specified key. Any existing data for the key will be replaced.
// If `data` is nil, then the key will be deleted if it exists in the database.
func (d *Database) Store(key, data []byte) {
	dkey := toDatum(key)
	if data == nil {
		C.gdbm_delete(d.dbf, dkey)
	} else {
		C.gdbm_store(d.dbf, dkey, toDatum(data), C.GDBM_REPLACE)
	}
}
Пример #2
0
func (d *gdbm) Store(keydata, valuedata []byte) error {
	key := toDatum(keydata)
	if valuedata == nil {
		C.gdbm_delete(d.dbf, key)
		return nil
	}
	value := toDatum(valuedata)
	C.gdbm_store(d.dbf, key, value, C.GDBM_REPLACE)
	return nil
}
Пример #3
0
// Internal helper method to hide the two constants GDBM_INSERT and
// GDBM_REPLACE from the user.
func (db *Database) update(key string, value string, flag C.int) (err error) {
	// Convert key and value into libgdbm's `datum` data structure. See the
	// C definition at the top for the implementation of C.mk_datum(string).
	kcs := C.CString(key)
	vcs := C.CString(value)
	k := C.mk_datum(kcs)
	v := C.mk_datum(vcs)
	defer C.free(unsafe.Pointer(kcs))
	defer C.free(unsafe.Pointer(vcs))

	retv := C.gdbm_store(db.dbf, k, v, flag)
	if retv != 0 {
		err = lastError()
	}
	return err
}