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/mysql/hex.go

@@ -0,0 +1,85 @@
+// 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 mysql
+
+import (
+	"encoding/hex"
+	"fmt"
+	"strconv"
+	"strings"
+
+	"github.com/juju/errors"
+)
+
+// Hex is for mysql hexadecimal literal type.
+type Hex struct {
+	// Value holds numeric value for hexadecimal literal.
+	Value int64
+}
+
+// String implements fmt.Stringer interface.
+func (h Hex) String() string {
+	s := fmt.Sprintf("%X", h.Value)
+	if len(s)%2 != 0 {
+		return "0x0" + s
+	}
+
+	return "0x" + s
+}
+
+// ToNumber changes hexadecimal type to float64 for numeric operation.
+// MySQL treats hexadecimal literal as double type.
+func (h Hex) ToNumber() float64 {
+	return float64(h.Value)
+}
+
+// ToString returns the string representation for hexadecimal literal.
+func (h Hex) ToString() string {
+	s := fmt.Sprintf("%x", h.Value)
+	if len(s)%2 != 0 {
+		s = "0" + s
+	}
+
+	// should never error.
+	b, _ := hex.DecodeString(s)
+	return string(b)
+}
+
+// ParseHex parses hexadecimal literal string.
+// The string format can be X'val', x'val' or 0xval.
+// val must in (0...9, a...z, A...Z).
+func ParseHex(s string) (Hex, error) {
+	if len(s) == 0 {
+		return Hex{}, errors.Errorf("invalid empty string for parsing hexadecimal literal")
+	}
+
+	if s[0] == 'x' || s[0] == 'X' {
+		// format is x'val' or X'val'
+		s = strings.Trim(s[1:], "'")
+		if len(s)%2 != 0 {
+			return Hex{}, errors.Errorf("invalid hexadecimal format, must even numbers, but %d", len(s))
+		}
+		s = "0x" + s
+	} else if !strings.HasPrefix(s, "0x") {
+		// here means format is not x'val', X'val' or 0xval.
+		return Hex{}, errors.Errorf("invalid hexadecimal format %s", s)
+	}
+
+	n, err := strconv.ParseInt(s, 0, 64)
+	if err != nil {
+		return Hex{}, errors.Trace(err)
+	}
+
+	return Hex{Value: n}, nil
+}