// 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)
}
}
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
}
// 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
}