Adding upstream version 2.5.1.

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

index/upsidedown/store/goleveldb/config.go

@@ -0,0 +1,66 @@
+//  Copyright (c) 2015 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/filter"
+	"github.com/blevesearch/goleveldb/leveldb/opt"
+)
+
+func applyConfig(o *opt.Options, config map[string]interface{}) (*opt.Options, error) {
+
+	ro, ok := config["read_only"].(bool)
+	if ok {
+		o.ReadOnly = ro
+	}
+
+	cim, ok := config["create_if_missing"].(bool)
+	if ok {
+		o.ErrorIfMissing = !cim
+	}
+
+	eie, ok := config["error_if_exists"].(bool)
+	if ok {
+		o.ErrorIfExist = eie
+	}
+
+	wbs, ok := config["write_buffer_size"].(float64)
+	if ok {
+		o.WriteBuffer = int(wbs)
+	}
+
+	bs, ok := config["block_size"].(float64)
+	if ok {
+		o.BlockSize = int(bs)
+	}
+
+	bri, ok := config["block_restart_interval"].(float64)
+	if ok {
+		o.BlockRestartInterval = int(bri)
+	}
+
+	lcc, ok := config["lru_cache_capacity"].(float64)
+	if ok {
+		o.BlockCacheCapacity = int(lcc)
+	}
+
+	bfbpk, ok := config["bloom_filter_bits_per_key"].(float64)
+	if ok {
+		bf := filter.NewBloomFilter(int(bfbpk))
+		o.Filter = bf
+	}
+
+	return o, nil
+}