Adding upstream version 2.5.1.

Signed-off-by: Daniel Baumann <daniel@debian.org>

index/upsidedown/store/goleveldb/iterator.go

@@ -0,0 +1,54 @@
+//  Copyright (c) 2014 Couchbase, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// 		http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package goleveldb
+
+import "github.com/blevesearch/goleveldb/leveldb/iterator"
+
+type Iterator struct {
+	store    *Store
+	iterator iterator.Iterator
+}
+
+func (ldi *Iterator) Seek(key []byte) {
+	ldi.iterator.Seek(key)
+}
+
+func (ldi *Iterator) Next() {
+	ldi.iterator.Next()
+}
+
+func (ldi *Iterator) Current() ([]byte, []byte, bool) {
+	if ldi.Valid() {
+		return ldi.Key(), ldi.Value(), true
+	}
+	return nil, nil, false
+}
+
+func (ldi *Iterator) Key() []byte {
+	return ldi.iterator.Key()
+}
+
+func (ldi *Iterator) Value() []byte {
+	return ldi.iterator.Value()
+}
+
+func (ldi *Iterator) Valid() bool {
+	return ldi.iterator.Valid()
+}
+
+func (ldi *Iterator) Close() error {
+	ldi.iterator.Release()
+	return nil
+}