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/fsp.go

@@ -0,0 +1,92 @@
+// 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 (
+	"math"
+	"strconv"
+	"strings"
+
+	"github.com/juju/errors"
+)
+
+const (
+	// UnspecifiedFsp is the unspecified fractional seconds part.
+	UnspecifiedFsp int = -1
+	// MaxFsp is the maximum digit of fractional seconds part.
+	MaxFsp int = 6
+	// MinFsp is the minimum digit of fractional seconds part.
+	MinFsp int = 0
+	// DefaultFsp is the default digit of fractional seconds part.
+	// MySQL use 0 as the default Fsp.
+	DefaultFsp int = 0
+)
+
+func checkFsp(fsp int) (int, error) {
+	if fsp == UnspecifiedFsp {
+		return DefaultFsp, nil
+	}
+	if fsp < MinFsp || fsp > MaxFsp {
+		return DefaultFsp, errors.Errorf("Invalid fsp %d", fsp)
+	}
+	return fsp, nil
+}
+
+func parseFrac(s string, fsp int) (int, error) {
+	if len(s) == 0 {
+		return 0, nil
+	}
+
+	var err error
+	fsp, err = checkFsp(fsp)
+	if err != nil {
+		return 0, errors.Trace(err)
+	}
+
+	// Use float to calculate frac, e.g, "123" -> "0.123"
+	if !strings.HasPrefix(s, ".") && !strings.HasPrefix(s, "0.") {
+		s = "0." + s
+	}
+
+	frac, err := strconv.ParseFloat(s, 64)
+	if err != nil {
+		return 0, errors.Trace(err)
+	}
+
+	// round frac to the nearest value with FSP
+	var round float64
+	pow := math.Pow(10, float64(fsp))
+	digit := pow * frac
+	_, div := math.Modf(digit)
+	if div >= 0.5 {
+		round = math.Ceil(digit)
+	} else {
+		round = math.Floor(digit)
+	}
+
+	// Get the final frac, with 6 digit number
+	//  0.1236 round 3 -> 124 -> 123000
+	//  0.0312 round 2 -> 3 -> 30000
+	return int(round * math.Pow10(MaxFsp-fsp)), nil
+}
+
+// alignFrac is used to generate alignment frac, like `100` -> `100000`
+func alignFrac(s string, fsp int) string {
+	sl := len(s)
+	if sl < fsp {
+		return s + strings.Repeat("0", fsp-sl)
+	}
+
+	return s
+}