Integrate public as bindata optionally (#293)

* Dropped unused codekit config

* Integrated dynamic and static bindata for public

* Ignore public bindata

* Add a general generate make task

* Integrated flexible public assets into web command

* Updated vendoring, added all missiong govendor deps

* Made the linter happy with the bindata and dynamic code

* Moved public bindata definition to modules directory

* Ignoring the new bindata path now

* Updated to the new public modules import path

* Updated public bindata command and drop the new prefix

vendor/github.com/pingcap/tidb/util/prefix_helper.go

@@ -0,0 +1,97 @@
+// Copyright 2014 The ql Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSES/QL-LICENSE file.
+
+// Copyright 2015 PingCAP, 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,
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package util
+
+import (
+	"bytes"
+
+	"github.com/juju/errors"
+	"github.com/pingcap/tidb/kv"
+)
+
+// ScanMetaWithPrefix scans metadata with the prefix.
+func ScanMetaWithPrefix(retriever kv.Retriever, prefix kv.Key, filter func(kv.Key, []byte) bool) error {
+	iter, err := retriever.Seek(prefix)
+	if err != nil {
+		return errors.Trace(err)
+	}
+	defer iter.Close()
+
+	for {
+		if err != nil {
+			return errors.Trace(err)
+		}
+
+		if iter.Valid() && iter.Key().HasPrefix(prefix) {
+			if !filter(iter.Key(), iter.Value()) {
+				break
+			}
+			err = iter.Next()
+			if err != nil {
+				return errors.Trace(err)
+			}
+		} else {
+			break
+		}
+	}
+
+	return nil
+}
+
+// DelKeyWithPrefix deletes keys with prefix.
+func DelKeyWithPrefix(rm kv.RetrieverMutator, prefix kv.Key) error {
+	var keys []kv.Key
+	iter, err := rm.Seek(prefix)
+	if err != nil {
+		return errors.Trace(err)
+	}
+
+	defer iter.Close()
+	for {
+		if err != nil {
+			return errors.Trace(err)
+		}
+
+		if iter.Valid() && iter.Key().HasPrefix(prefix) {
+			keys = append(keys, iter.Key().Clone())
+			err = iter.Next()
+			if err != nil {
+				return errors.Trace(err)
+			}
+		} else {
+			break
+		}
+	}
+
+	for _, key := range keys {
+		err := rm.Delete(key)
+		if err != nil {
+			return errors.Trace(err)
+		}
+	}
+
+	return nil
+}
+
+// RowKeyPrefixFilter returns a function which checks whether currentKey has decoded rowKeyPrefix as prefix.
+func RowKeyPrefixFilter(rowKeyPrefix kv.Key) kv.FnKeyCmp {
+	return func(currentKey kv.Key) bool {
+		// Next until key without prefix of this record.
+		return !bytes.HasPrefix(currentKey, rowKeyPrefix)
+	}
+}