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/structure/list.go

@@ -0,0 +1,212 @@
+// 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 structure
+
+import (
+	"encoding/binary"
+
+	"github.com/juju/errors"
+	"github.com/pingcap/tidb/kv"
+	"github.com/pingcap/tidb/terror"
+)
+
+type listMeta struct {
+	LIndex int64
+	RIndex int64
+}
+
+func (meta listMeta) Value() []byte {
+	buf := make([]byte, 16)
+	binary.BigEndian.PutUint64(buf[0:8], uint64(meta.LIndex))
+	binary.BigEndian.PutUint64(buf[8:16], uint64(meta.RIndex))
+	return buf
+}
+
+func (meta listMeta) IsEmpty() bool {
+	return meta.LIndex >= meta.RIndex
+}
+
+// LPush prepends one or multiple values to a list.
+func (t *TxStructure) LPush(key []byte, values ...[]byte) error {
+	return t.listPush(key, true, values...)
+}
+
+// RPush appends one or multiple values to a list.
+func (t *TxStructure) RPush(key []byte, values ...[]byte) error {
+	return t.listPush(key, false, values...)
+}
+
+func (t *TxStructure) listPush(key []byte, left bool, values ...[]byte) error {
+	if len(values) == 0 {
+		return nil
+	}
+
+	metaKey := t.encodeListMetaKey(key)
+	meta, err := t.loadListMeta(metaKey)
+	if err != nil {
+		return errors.Trace(err)
+	}
+
+	index := int64(0)
+	for _, v := range values {
+		if left {
+			meta.LIndex--
+			index = meta.LIndex
+		} else {
+			index = meta.RIndex
+			meta.RIndex++
+		}
+
+		dataKey := t.encodeListDataKey(key, index)
+		if err = t.txn.Set(dataKey, v); err != nil {
+			return errors.Trace(err)
+		}
+	}
+
+	return t.txn.Set(metaKey, meta.Value())
+}
+
+// LPop removes and gets the first element in a list.
+func (t *TxStructure) LPop(key []byte) ([]byte, error) {
+	return t.listPop(key, true)
+}
+
+// RPop removes and gets the last element in a list.
+func (t *TxStructure) RPop(key []byte) ([]byte, error) {
+	return t.listPop(key, false)
+}
+
+func (t *TxStructure) listPop(key []byte, left bool) ([]byte, error) {
+	metaKey := t.encodeListMetaKey(key)
+	meta, err := t.loadListMeta(metaKey)
+	if err != nil || meta.IsEmpty() {
+		return nil, errors.Trace(err)
+	}
+
+	index := int64(0)
+	if left {
+		index = meta.LIndex
+		meta.LIndex++
+	} else {
+		meta.RIndex--
+		index = meta.RIndex
+	}
+
+	dataKey := t.encodeListDataKey(key, index)
+
+	var data []byte
+	data, err = t.txn.Get(dataKey)
+	if err != nil {
+		return nil, errors.Trace(err)
+	}
+
+	if err = t.txn.Delete(dataKey); err != nil {
+		return nil, errors.Trace(err)
+	}
+
+	if !meta.IsEmpty() {
+		err = t.txn.Set(metaKey, meta.Value())
+	} else {
+		err = t.txn.Delete(metaKey)
+	}
+
+	return data, errors.Trace(err)
+}
+
+// LLen gets the length of a list.
+func (t *TxStructure) LLen(key []byte) (int64, error) {
+	metaKey := t.encodeListMetaKey(key)
+	meta, err := t.loadListMeta(metaKey)
+	return meta.RIndex - meta.LIndex, errors.Trace(err)
+}
+
+// LIndex gets an element from a list by its index.
+func (t *TxStructure) LIndex(key []byte, index int64) ([]byte, error) {
+	metaKey := t.encodeListMetaKey(key)
+	meta, err := t.loadListMeta(metaKey)
+	if err != nil || meta.IsEmpty() {
+		return nil, errors.Trace(err)
+	}
+
+	index = adjustIndex(index, meta.LIndex, meta.RIndex)
+
+	if index >= meta.LIndex && index < meta.RIndex {
+		return t.txn.Get(t.encodeListDataKey(key, index))
+	}
+	return nil, nil
+}
+
+// LSet updates an element in the list by its index.
+func (t *TxStructure) LSet(key []byte, index int64, value []byte) error {
+	metaKey := t.encodeListMetaKey(key)
+	meta, err := t.loadListMeta(metaKey)
+	if err != nil || meta.IsEmpty() {
+		return errors.Trace(err)
+	}
+
+	index = adjustIndex(index, meta.LIndex, meta.RIndex)
+
+	if index >= meta.LIndex && index < meta.RIndex {
+		return t.txn.Set(t.encodeListDataKey(key, index), value)
+	}
+	return errors.Errorf("invalid index %d", index)
+}
+
+// LClear removes the list of the key.
+func (t *TxStructure) LClear(key []byte) error {
+	metaKey := t.encodeListMetaKey(key)
+	meta, err := t.loadListMeta(metaKey)
+	if err != nil || meta.IsEmpty() {
+		return errors.Trace(err)
+	}
+
+	for index := meta.LIndex; index < meta.RIndex; index++ {
+		dataKey := t.encodeListDataKey(key, index)
+		if err = t.txn.Delete(dataKey); err != nil {
+			return errors.Trace(err)
+		}
+	}
+
+	return t.txn.Delete(metaKey)
+}
+
+func (t *TxStructure) loadListMeta(metaKey []byte) (listMeta, error) {
+	v, err := t.txn.Get(metaKey)
+	if terror.ErrorEqual(err, kv.ErrNotExist) {
+		err = nil
+	} else if err != nil {
+		return listMeta{}, errors.Trace(err)
+	}
+
+	meta := listMeta{0, 0}
+	if v == nil {
+		return meta, nil
+	}
+
+	if len(v) != 16 {
+		return meta, errors.Errorf("invalid list meta data")
+	}
+
+	meta.LIndex = int64(binary.BigEndian.Uint64(v[0:8]))
+	meta.RIndex = int64(binary.BigEndian.Uint64(v[8:16]))
+	return meta, nil
+}
+
+func adjustIndex(index int64, min, max int64) int64 {
+	if index >= 0 {
+		return index + min
+	}
+
+	return index + max
+}