replace zxq.co/ripple/hanayo

vendor/github.com/felipeweb/gopher-utils/.gitignore

@@ -0,0 +1,125 @@
+### JetBrains template
+# Covers JetBrains IDEs: IntelliJ, RubyMine, PhpStorm, AppCode, PyCharm, CLion, Android Studio
+
+*.iml
+
+## Directory-based project format:
+.idea/
+# if you remove the above rule, at least ignore the following:
+
+# User-specific stuff:
+# .idea/workspace.xml
+# .idea/tasks.xml
+# .idea/dictionaries
+
+# Sensitive or high-churn files:
+# .idea/dataSources.ids
+# .idea/dataSources.xml
+# .idea/sqlDataSources.xml
+# .idea/dynamic.xml
+# .idea/uiDesigner.xml
+
+# Gradle:
+# .idea/gradle.xml
+# .idea/libraries
+
+# Mongo Explorer plugin:
+# .idea/mongoSettings.xml
+
+## File-based project format:
+*.ipr
+*.iws
+
+## Plugin-specific files:
+
+# IntelliJ
+/out/
+
+# mpeltonen/sbt-idea plugin
+.idea_modules/
+
+# JIRA plugin
+atlassian-ide-plugin.xml
+
+# Crashlytics plugin (for Android Studio and IntelliJ)
+com_crashlytics_export_strings.xml
+crashlytics.properties
+crashlytics-build.properties
+### Go template
+# Compiled Object files, Static and Dynamic libs (Shared Objects)
+*.o
+*.a
+*.so
+
+# Folders
+_obj
+_test
+
+# Architecture specific extensions/prefixes
+*.[568vq]
+[568vq].out
+
+*.cgo1.go
+*.cgo2.c
+_cgo_defun.c
+_cgo_gotypes.go
+_cgo_export.*
+
+_testmain.go
+
+*.exe
+*.test
+*.prof
+### OSX template
+.DS_Store
+.AppleDouble
+.LSOverride
+
+# Icon must end with two \r
+Icon
+
+# Thumbnails
+._*
+
+# Files that might appear in the root of a volume
+.DocumentRevisions-V100
+.fseventsd
+.Spotlight-V100
+.TemporaryItems
+.Trashes
+.VolumeIcon.icns
+
+# Directories potentially created on remote AFP share
+.AppleDB
+.AppleDesktop
+Network Trash Folder
+Temporary Items
+.apdisk
+### Windows template
+# Windows image file caches
+Thumbs.db
+ehthumbs.db
+
+# Folder config file
+Desktop.ini
+
+# Recycle Bin used on file shares
+$RECYCLE.BIN/
+
+# Windows Installer files
+*.cab
+*.msi
+*.msm
+*.msp
+
+# Windows shortcuts
+*.lnk
+### Linux template
+*~
+
+# KDE directory preferences
+.directory
+
+# Linux trash folder which might appear on any partition or disk
+.Trash-*
+

vendor/github.com/felipeweb/gopher-utils/.travis.yml

@@ -0,0 +1,12 @@
+sudo: required
+
+language: go
+
+go:
+  - 1.7.3
+
+install:
+  - go get -v -t ./...
+  
+script:
+  - go test -v -race ./...

vendor/github.com/felipeweb/gopher-utils/README.md

@@ -0,0 +1,5 @@
+# gopher-utils 
+
+[![Build Status](https://travis-ci.org/felipeweb/gopher-utils.svg?branch=master)](https://travis-ci.org/felipeweb/gopher-utils) [![GoDoc](https://godoc.org/github.com/felipeweb/gopher-utils?status.svg)](https://godoc.org/github.com/felipeweb/gopher-utils)
+
+This is an open source project for commonly used functions for the Go programming language.

vendor/github.com/felipeweb/gopher-utils/convert.go

@@ -0,0 +1,149 @@
+package gopher_utils
+
+import (
+	"fmt"
+	"strconv"
+)
+
+// Convert string to specify type.
+type StrTo string
+
+func (f StrTo) Exist() bool {
+	return string(f) != string(0x1E)
+}
+
+func (f StrTo) Uint8() (uint8, error) {
+	v, err := strconv.ParseUint(f.String(), 10, 8)
+	return uint8(v), err
+}
+
+func (f StrTo) Int() (int, error) {
+	v, err := strconv.ParseInt(f.String(), 10, 0)
+	return int(v), err
+}
+
+func (f StrTo) Int64() (int64, error) {
+	v, err := strconv.ParseInt(f.String(), 10, 64)
+	return int64(v), err
+}
+
+func (f StrTo) MustUint8() uint8 {
+	v, _ := f.Uint8()
+	return v
+}
+
+func (f StrTo) MustInt() int {
+	v, _ := f.Int()
+	return v
+}
+
+func (f StrTo) MustInt64() int64 {
+	v, _ := f.Int64()
+	return v
+}
+
+func (f StrTo) String() string {
+	if f.Exist() {
+		return string(f)
+	}
+	return ""
+}
+
+// RuneToStr converts rune to string.
+// Do not use `ToStr` function for a rune, because Go will understand it as an int32, so the string will contain, erroneously, the char code.
+func RuneToStr(value rune) string {
+	return string(value)
+}
+
+// Convert any type to string.
+func ToStr(value interface{}, args ...int) (s string) {
+	switch v := value.(type) {
+	case bool:
+		s = strconv.FormatBool(v)
+	case float32:
+		s = strconv.FormatFloat(float64(v), 'f', argInt(args).Get(0, -1), argInt(args).Get(1, 32))
+	case float64:
+		s = strconv.FormatFloat(v, 'f', argInt(args).Get(0, -1), argInt(args).Get(1, 64))
+	case int:
+		s = strconv.FormatInt(int64(v), argInt(args).Get(0, 10))
+	case int8:
+		s = strconv.FormatInt(int64(v), argInt(args).Get(0, 10))
+	case int16:
+		s = strconv.FormatInt(int64(v), argInt(args).Get(0, 10))
+	case int32:
+		s = strconv.FormatInt(int64(v), argInt(args).Get(0, 10))
+	case int64:
+		s = strconv.FormatInt(v, argInt(args).Get(0, 10))
+	case uint:
+		s = strconv.FormatUint(uint64(v), argInt(args).Get(0, 10))
+	case uint8:
+		s = strconv.FormatUint(uint64(v), argInt(args).Get(0, 10))
+	case uint16:
+		s = strconv.FormatUint(uint64(v), argInt(args).Get(0, 10))
+	case uint32:
+		s = strconv.FormatUint(uint64(v), argInt(args).Get(0, 10))
+	case uint64:
+		s = strconv.FormatUint(v, argInt(args).Get(0, 10))
+	case string:
+		s = v
+	case []byte:
+		s = string(v)
+	default:
+		s = fmt.Sprintf("%v", v)
+	}
+	return s
+}
+
+type argInt []int
+
+func (a argInt) Get(i int, args ...int) (r int) {
+	if i >= 0 && i < len(a) {
+		r = a[i]
+	} else if len(args) > 0 {
+		r = args[0]
+	}
+	return
+}
+
+// HexStr2int converts hex format string to decimal number.
+func HexStr2int(hexStr string) (int, error) {
+	num := 0
+	length := len(hexStr)
+	for i := 0; i < length; i++ {
+		char := hexStr[length-i-1]
+		factor := -1
+
+		switch {
+		case char >= '0' && char <= '9':
+			factor = int(char) - '0'
+		case char >= 'a' && char <= 'f':
+			factor = int(char) - 'a' + 10
+		default:
+			return -1, fmt.Errorf("invalid hex: %s", string(char))
+		}
+
+		num += factor * PowInt(16, i)
+	}
+	return num, nil
+}
+
+// Int2HexStr converts decimal number to hex format string.
+func Int2HexStr(num int) (hex string) {
+	if num == 0 {
+		return "0"
+	}
+
+	for num > 0 {
+		r := num % 16
+
+		c := "?"
+		if r >= 0 && r <= 9 {
+			c = string(r + '0')
+		} else {
+			c = string(r + 'a' - 10)
+		}
+		hex = c + hex
+		num = num / 16
+	}
+	return hex
+}

vendor/github.com/felipeweb/gopher-utils/convert_test.go

@@ -0,0 +1,41 @@
+package gopher_utils
+
+import (
+	. "github.com/smartystreets/goconvey/convey"
+	"testing"
+)
+
+func TestHexStr2int(t *testing.T) {
+	Convey("Convert hex format string to decimal", t, func() {
+		hexDecs := map[string]int{
+			"1":   1,
+			"002": 2,
+			"011": 17,
+			"0a1": 161,
+			"35e": 862,
+		}
+
+		for hex, dec := range hexDecs {
+			val, err := HexStr2int(hex)
+			So(err, ShouldBeNil)
+			So(val, ShouldEqual, dec)
+		}
+	})
+}
+
+func TestInt2HexStr(t *testing.T) {
+	Convey("Convert decimal to hex format string", t, func() {
+		decHexs := map[int]string{
+			1:   "1",
+			2:   "2",
+			17:  "11",
+			161: "a1",
+			862: "35e",
+		}
+
+		for dec, hex := range decHexs {
+			val := Int2HexStr(dec)
+			So(val, ShouldEqual, hex)
+		}
+	})
+}

vendor/github.com/felipeweb/gopher-utils/digester.go

@@ -0,0 +1,26 @@
+package gopher_utils
+
+import (
+	"crypto/sha256"
+	"crypto/sha512"
+	"crypto/md5"
+	"encoding/hex"
+)
+
+func Sha256(str string) string {
+	hash := sha256.New()
+	hash.Write([]byte(str))
+	return hex.EncodeToString(hash.Sum(nil))
+}
+
+func Sha512(str string) string {
+	hash := sha512.New()
+	hash.Write([]byte(str))
+	return hex.EncodeToString(hash.Sum(nil))
+}
+
+func Md5(str string) string {
+	hash := md5.New()
+	hash.Write([]byte(str))
+	return hex.EncodeToString(hash.Sum(nil))
+}

vendor/github.com/felipeweb/gopher-utils/digester_test.go

@@ -0,0 +1,24 @@
+package gopher_utils
+
+import (
+	. "github.com/smartystreets/goconvey/convey"
+	"testing"
+)
+
+func TestMd5(t *testing.T) {
+	Convey("Should encrypt using MD5", t, func() {
+		So(Md5("test"), ShouldEqual, "098f6bcd4621d373cade4e832627b4f6")
+	})
+}
+
+func TestSha256(t *testing.T) {
+	Convey("Should encrypt using SHA256", t, func() {
+		So(Sha256("test"), ShouldEqual, "9f86d081884c7d659a2feaa0c55ad015a3bf4f1b2b0b822cd15d6c15b0f00a08")
+	})
+}
+
+func TestSha512(t *testing.T) {
+	Convey("Should encrypt using SHA512", t, func() {
+		So(Sha512("test"), ShouldEqual, "ee26b0dd4af7e749aa1a8ee3c10ae9923f618980772e473f8819a5d4940e0db27ac185f8a0e1d5f84f88bc887fd67b143732c304cc5fa9ad8e6f57f50028a8ff")
+	})
+}

vendor/github.com/felipeweb/gopher-utils/dir.go

@@ -0,0 +1,159 @@
+package gopher_utils
+
+import (
+	"errors"
+	"fmt"
+	"os"
+	"path"
+	"strings"
+)
+
+// IsDir returns true if given path is a directory,
+// or returns false when it's a file or does not exist.
+func IsDir(dir string) bool {
+	f, e := os.Stat(dir)
+	if e != nil {
+		return false
+	}
+	return f.IsDir()
+}
+
+func statDir(dirPath, recPath string, includeDir, isDirOnly bool) ([]string, error) {
+	dir, err := os.Open(dirPath)
+	if err != nil {
+		return nil, err
+	}
+	defer dir.Close()
+
+	fis, err := dir.Readdir(0)
+	if err != nil {
+		return nil, err
+	}
+
+	statList := make([]string, 0)
+	for _, fi := range fis {
+		if strings.Contains(fi.Name(), ".DS_Store") {
+			continue
+		}
+
+		relPath := path.Join(recPath, fi.Name())
+		curPath := path.Join(dirPath, fi.Name())
+		if fi.IsDir() {
+			if includeDir {
+				statList = append(statList, relPath+"/")
+			}
+			s, err := statDir(curPath, relPath, includeDir, isDirOnly)
+			if err != nil {
+				return nil, err
+			}
+			statList = append(statList, s...)
+		} else if !isDirOnly {
+			statList = append(statList, relPath)
+		}
+	}
+	return statList, nil
+}
+
+// StatDir gathers information of given directory by depth-first.
+// It returns slice of file list and includes subdirectories if enabled;
+// it returns error and nil slice when error occurs in underlying functions,
+// or given path is not a directory or does not exist.
+//
+// Slice does not include given path itself.
+// If subdirectories is enabled, they will have suffix '/'.
+func StatDir(rootPath string, includeDir ...bool) ([]string, error) {
+	if !IsDir(rootPath) {
+		return nil, errors.New("not a directory or does not exist: " + rootPath)
+	}
+
+	isIncludeDir := false
+	if len(includeDir) >= 1 {
+		isIncludeDir = includeDir[0]
+	}
+	return statDir(rootPath, "", isIncludeDir, false)
+}
+
+// GetAllSubDirs returns all subdirectories of given root path.
+// Slice does not include given path itself.
+func GetAllSubDirs(rootPath string) ([]string, error) {
+	if !IsDir(rootPath) {
+		return nil, errors.New("not a directory or does not exist: " + rootPath)
+	}
+	return statDir(rootPath, "", true, true)
+}
+
+// GetFileListBySuffix returns an ordered list of file paths.
+// It recognize if given path is a file, and don't do recursive find.
+func GetFileListBySuffix(dirPath, suffix string) ([]string, error) {
+	if !IsExist(dirPath) {
+		return nil, fmt.Errorf("given path does not exist: %s", dirPath)
+	} else if IsFile(dirPath) {
+		return []string{dirPath}, nil
+	}
+
+	// Given path is a directory.
+	dir, err := os.Open(dirPath)
+	if err != nil {
+		return nil, err
+	}
+
+	fis, err := dir.Readdir(0)
+	if err != nil {
+		return nil, err
+	}
+
+	files := make([]string, 0, len(fis))
+	for _, fi := range fis {
+		if strings.HasSuffix(fi.Name(), suffix) {
+			files = append(files, path.Join(dirPath, fi.Name()))
+		}
+	}
+
+	return files, nil
+}
+
+// CopyDir copy files recursively from source to target directory.
+//
+// The filter accepts a function that process the path info.
+// and should return true for need to filter.
+//
+// It returns error when error occurs in underlying functions.
+func CopyDir(srcPath, destPath string, filters ...func(filePath string) bool) error {
+	// Check if target directory exists.
+	if IsExist(destPath) {
+		return errors.New("file or directory alreay exists: " + destPath)
+	}
+
+	err := os.MkdirAll(destPath, os.ModePerm)
+	if err != nil {
+		return err
+	}
+
+	// Gather directory info.
+	infos, err := StatDir(srcPath, true)
+	if err != nil {
+		return err
+	}
+
+	var filter func(filePath string) bool
+	if len(filters) > 0 {
+		filter = filters[0]
+	}
+
+	for _, info := range infos {
+		if filter != nil && filter(info) {
+			continue
+		}
+
+		curPath := path.Join(destPath, info)
+		if strings.HasSuffix(info, "/") {
+			err = os.MkdirAll(curPath, os.ModePerm)
+		} else {
+			err = Copy(path.Join(srcPath, info), curPath)
+		}
+		if err != nil {
+			return err
+		}
+	}
+	return nil
+}

vendor/github.com/felipeweb/gopher-utils/dir_test.go

@@ -0,0 +1,35 @@
+package gopher_utils
+
+import (
+	. "github.com/smartystreets/goconvey/convey"
+	"os"
+	"testing"
+)
+
+func TestIsDir(t *testing.T) {
+	Convey("Check if given path is a directory", t, func() {
+		Convey("Pass a file name", func() {
+			So(IsDir("file.go"), ShouldEqual, false)
+		})
+		Convey("Pass a directory name", func() {
+			So(IsDir("testdata"), ShouldEqual, true)
+		})
+		Convey("Pass a invalid path", func() {
+			So(IsDir("foo"), ShouldEqual, false)
+		})
+	})
+}
+
+func TestCopyDir(t *testing.T) {
+	Convey("Items of two slices should be same", t, func() {
+		_, err := StatDir("testdata", true)
+		So(err, ShouldEqual, nil)
+
+		err = CopyDir("testdata", "testdata2")
+		So(err, ShouldEqual, nil)
+
+		_, err = StatDir("testdata2", true)
+		os.RemoveAll("testdata2")
+		So(err, ShouldEqual, nil)
+	})
+}

vendor/github.com/felipeweb/gopher-utils/doc.go

@@ -0,0 +1,2 @@
+//commonly used functions for the Go programming language.
+package gopher_utils

vendor/github.com/felipeweb/gopher-utils/file.go

@@ -0,0 +1,131 @@
+package gopher_utils
+
+import (
+	"fmt"
+	"io"
+	"io/ioutil"
+	"math"
+	"os"
+	"path"
+)
+
+// Storage unit constants.
+const (
+	Byte  = 1
+	KByte = Byte * 1024
+	MByte = KByte * 1024
+	GByte = MByte * 1024
+	TByte = GByte * 1024
+	PByte = TByte * 1024
+	EByte = PByte * 1024
+)
+
+func logn(n, b float64) float64 {
+	return math.Log(n) / math.Log(b)
+}
+
+func humanateBytes(s uint64, base float64, sizes []string) string {
+	if s < 10 {
+		return fmt.Sprintf("%dB", s)
+	}
+	e := math.Floor(logn(float64(s), base))
+	suffix := sizes[int(e)]
+	val := float64(s) / math.Pow(base, math.Floor(e))
+	f := "%.0f"
+	if val < 10 {
+		f = "%.1f"
+	}
+
+	return fmt.Sprintf(f+"%s", val, suffix)
+}
+
+// HumaneFileSize calculates the file size and generate user-friendly string.
+func HumaneFileSize(s uint64) string {
+	sizes := []string{"B", "KB", "MB", "GB", "TB", "PB", "EB"}
+	return humanateBytes(s, 1024, sizes)
+}
+
+// FileMTime returns file modified time and possible error.
+func FileMTime(file string) (int64, error) {
+	f, err := os.Stat(file)
+	if err != nil {
+		return 0, err
+	}
+	return f.ModTime().Unix(), nil
+}
+
+// FileSize returns file size in bytes and possible error.
+func FileSize(file string) (int64, error) {
+	f, err := os.Stat(file)
+	if err != nil {
+		return 0, err
+	}
+	return f.Size(), nil
+}
+
+// Copy copies file from source to target path.
+func Copy(src, dest string) error {
+	// Gather file information to set back later.
+	si, err := os.Lstat(src)
+	if err != nil {
+		return err
+	}
+
+	// Handle symbolic link.
+	if si.Mode()&os.ModeSymlink != 0 {
+		target, err := os.Readlink(src)
+		if err != nil {
+			return err
+		}
+		// NOTE: os.Chmod and os.Chtimes don't recoganize symbolic link,
+		// which will lead "no such file or directory" error.
+		return os.Symlink(target, dest)
+	}
+
+	sr, err := os.Open(src)
+	if err != nil {
+		return err
+	}
+	defer sr.Close()
+
+	dw, err := os.Create(dest)
+	if err != nil {
+		return err
+	}
+	defer dw.Close()
+
+	if _, err = io.Copy(dw, sr); err != nil {
+		return err
+	}
+
+	// Set back file information.
+	if err = os.Chtimes(dest, si.ModTime(), si.ModTime()); err != nil {
+		return err
+	}
+	return os.Chmod(dest, si.Mode())
+}
+
+// WriteFile writes data to a file named by filename.
+// If the file does not exist, WriteFile creates it
+// and its upper level paths.
+func WriteFile(filename string, data []byte) error {
+	os.MkdirAll(path.Dir(filename), os.ModePerm)
+	return ioutil.WriteFile(filename, data, 0655)
+}
+
+// IsFile returns true if given path is a file,
+// or returns false when it's a directory or does not exist.
+func IsFile(filePath string) bool {
+	f, e := os.Stat(filePath)
+	if e != nil {
+		return false
+	}
+	return !f.IsDir()
+}
+
+// IsExist checks whether a file or directory exists.
+// It returns false when the file or directory does not exist.
+func IsExist(path string) bool {
+	_, err := os.Stat(path)
+	return err == nil || os.IsExist(err)
+}

vendor/github.com/felipeweb/gopher-utils/file_test.go

@@ -0,0 +1,34 @@
+package gopher_utils
+
+import (
+	. "github.com/smartystreets/goconvey/convey"
+	"testing"
+)
+
+func TestIsFile(t *testing.T) {
+	if !IsFile("file.go") {
+		t.Errorf("IsExist:\n Expect => %v\n Got => %v\n", true, false)
+	}
+
+	if IsFile("testdata") {
+		t.Errorf("IsExist:\n Expect => %v\n Got => %v\n", false, true)
+	}
+
+	if IsFile("files.go") {
+		t.Errorf("IsExist:\n Expect => %v\n Got => %v\n", false, true)
+	}
+}
+
+func TestIsExist(t *testing.T) {
+	Convey("Check if file or directory exists", t, func() {
+		Convey("Pass a file name that exists", func() {
+			So(IsExist("file.go"), ShouldEqual, true)
+		})
+		Convey("Pass a directory name that exists", func() {
+			So(IsExist("testdata"), ShouldEqual, true)
+		})
+		Convey("Pass a directory name that does not exist", func() {
+			So(IsExist(".hg"), ShouldEqual, false)
+		})
+	})
+}

vendor/github.com/felipeweb/gopher-utils/math.go

@@ -0,0 +1,15 @@
+package gopher_utils
+
+// PowInt is int type of math.Pow function.
+func PowInt(x int, y int) int {
+	if y <= 0 {
+		return 1
+	} else {
+		if y%2 == 0 {
+			sqrt := PowInt(x, y/2)
+			return sqrt * sqrt
+		} else {
+			return PowInt(x, y-1) * x
+		}
+	}
+}

vendor/github.com/felipeweb/gopher-utils/math_test.go

@@ -0,0 +1,19 @@
+package gopher_utils
+
+import (
+	. "github.com/smartystreets/goconvey/convey"
+	"math"
+	"testing"
+)
+
+func Test_Pow(t *testing.T) {
+	Convey("Power int", t, func() {
+		for x := 0; x < 10; x++ {
+			for y := 0; y < 8; y++ {
+				result := PowInt(x, y)
+				result_float := math.Pow(float64(x), float64(y))
+				So(result, ShouldEqual, int(result_float))
+			}
+		}
+	})
+}

vendor/github.com/felipeweb/gopher-utils/string.go

@@ -0,0 +1,126 @@
+package gopher_utils
+
+import (
+	"bytes"
+	"unicode"
+	"unicode/utf8"
+)
+
+// IsLetter returns true if the 'l' is an English letter.
+func IsLetter(l uint8) bool {
+	n := (l | 0x20) - 'a'
+	if n >= 0 && n < 26 {
+		return true
+	}
+	return false
+}
+
+// Reverse s string, support unicode
+func Reverse(s string) string {
+	n := len(s)
+	runes := make([]rune, n)
+	for _, rune := range s {
+		n--
+		runes[n] = rune
+	}
+	return string(runes[n:])
+}
+
+// ToSnakeCase can convert all upper case characters in a string to
+// underscore format.
+//
+// Some samples.
+//     "FirstName"  => "first_name"
+//     "HTTPServer" => "http_server"
+//     "NoHTTPS"    => "no_https"
+//     "GO_PATH"    => "go_path"
+//     "GO PATH"    => "go_path"      // space is converted to underscore.
+//     "GO-PATH"    => "go_path"      // hyphen is converted to underscore.
+//
+func ToSnakeCase(str string) string {
+	if len(str) == 0 {
+		return ""
+	}
+
+	buf := &bytes.Buffer{}
+	var prev, r0, r1 rune
+	var size int
+
+	r0 = '_'
+
+	for len(str) > 0 {
+		prev = r0
+		r0, size = utf8.DecodeRuneInString(str)
+		str = str[size:]
+
+		switch {
+		case r0 == utf8.RuneError:
+			buf.WriteByte(byte(str[0]))
+
+		case unicode.IsUpper(r0):
+			if prev != '_' {
+				buf.WriteRune('_')
+			}
+
+			buf.WriteRune(unicode.ToLower(r0))
+
+			if len(str) == 0 {
+				break
+			}
+
+			r0, size = utf8.DecodeRuneInString(str)
+			str = str[size:]
+
+			if !unicode.IsUpper(r0) {
+				buf.WriteRune(r0)
+				break
+			}
+
+			// find next non-upper-case character and insert `_` properly.
+			// it's designed to convert `HTTPServer` to `http_server`.
+			// if there are more than 2 adjacent upper case characters in a word,
+			// treat them as an abbreviation plus a normal word.
+			for len(str) > 0 {
+				r1 = r0
+				r0, size = utf8.DecodeRuneInString(str)
+				str = str[size:]
+
+				if r0 == utf8.RuneError {
+					buf.WriteRune(unicode.ToLower(r1))
+					buf.WriteByte(byte(str[0]))
+					break
+				}
+
+				if !unicode.IsUpper(r0) {
+					if r0 == '_' || r0 == ' ' || r0 == '-' {
+						r0 = '_'
+
+						buf.WriteRune(unicode.ToLower(r1))
+					} else {
+						buf.WriteRune('_')
+						buf.WriteRune(unicode.ToLower(r1))
+						buf.WriteRune(r0)
+					}
+
+					break
+				}
+
+				buf.WriteRune(unicode.ToLower(r1))
+			}
+
+			if len(str) == 0 || r0 == '_' {
+				buf.WriteRune(unicode.ToLower(r0))
+				break
+			}
+
+		default:
+			if r0 == ' ' || r0 == '-' {
+				r0 = '_'
+			}
+
+			buf.WriteRune(r0)
+		}
+	}
+
+	return buf.String()
+}

vendor/github.com/felipeweb/gopher-utils/string_test.go

@@ -0,0 +1,54 @@
+package gopher_utils
+
+import (
+	. "github.com/smartystreets/goconvey/convey"
+	"testing"
+)
+
+func TestIsLetter(t *testing.T) {
+	if IsLetter('1') {
+		t.Errorf("IsLetter:\n Expect => %v\n Got => %v\n", false, true)
+	}
+
+	if IsLetter('[') {
+		t.Errorf("IsLetter:\n Expect => %v\n Got => %v\n", false, true)
+	}
+
+	if !IsLetter('a') {
+		t.Errorf("IsLetter:\n Expect => %v\n Got => %v\n", true, false)
+	}
+
+	if !IsLetter('Z') {
+		t.Errorf("IsLetter:\n Expect => %v\n Got => %v\n", true, false)
+	}
+}
+
+func TestReverse(t *testing.T) {
+	if Reverse("abcdefg") != "gfedcba" {
+		t.Errorf("Reverse:\n Except => %s\n Got =>%s\n", "gfedcba", Reverse("abcdefg"))
+	}
+}
+
+func Test_ToSnakeCase(t *testing.T) {
+	cases := map[string]string{
+		"HTTPServer":         "http_server",
+		"_camelCase":         "_camel_case",
+		"NoHTTPS":            "no_https",
+		"Wi_thF":             "wi_th_f",
+		"_AnotherTES_TCaseP": "_another_tes_t_case_p",
+		"ALL":                "all",
+		"_HELLO_WORLD_":      "_hello_world_",
+		"HELLO_WORLD":        "hello_world",
+		"HELLO____WORLD":     "hello____world",
+		"TW":                 "tw",
+		"_C":                 "_c",
+
+		"  sentence case  ":                                    "__sentence_case__",
+		" Mixed-hyphen case _and SENTENCE_case and UPPER-case": "_mixed_hyphen_case__and_sentence_case_and_upper_case",
+	}
+	Convey("Convert string into snake case", t, func() {
+		for old, new := range cases {
+			So(ToSnakeCase(old), ShouldEqual, new)
+		}
+	})
+}

vendor/github.com/felipeweb/gopher-utils/testdata/SaveFile.txt

@@ -0,0 +1 @@
+TestSaveFile

vendor/github.com/felipeweb/gopher-utils/testdata/SaveFileS.txt

@@ -0,0 +1 @@
+TestSaveFileS

vendor/github.com/felipeweb/gopher-utils/testdata/statDir/SaveFile.txt

@@ -0,0 +1 @@
+TestSaveFile

vendor/github.com/felipeweb/gopher-utils/testdata/statDir/SaveFileS.txt

@@ -0,0 +1 @@
+TestSaveFileS

vendor/github.com/felipeweb/gopher-utils/testdata/statDir/secondLevel/SaveFile.txt

@@ -0,0 +1 @@
+TestSaveFile

vendor/github.com/felipeweb/gopher-utils/testdata/statDir/secondLevel/SaveFileS.txt

@@ -0,0 +1 @@
+TestSaveFileS

vendor/github.com/felipeweb/gopher-utils/time.go

@@ -0,0 +1,101 @@
+package gopher_utils
+
+import (
+	"fmt"
+	"strconv"
+	"strings"
+	"time"
+)
+
+// Format unix time int64 to string
+func Date(ti int64, format string) string {
+	t := time.Unix(int64(ti), 0)
+	return DateT(t, format)
+}
+
+// Format unix time string to string
+func DateS(ts string, format string) string {
+	i, _ := strconv.ParseInt(ts, 10, 64)
+	return Date(i, format)
+}
+
+// Format time.Time struct to string
+// MM - month - 01
+// M - month - 1, single bit
+// DD - day - 02
+// D - day 2
+// YYYY - year - 2006
+// YY - year - 06
+// HH - 24 hours - 03
+// H - 24 hours - 3
+// hh - 12 hours - 03
+// h - 12 hours - 3
+// mm - minute - 04
+// m - minute - 4
+// ss - second - 05
+// s - second = 5
+func DateT(t time.Time, format string) string {
+	res := strings.Replace(format, "MM", t.Format("01"), -1)
+	res = strings.Replace(res, "M", t.Format("1"), -1)
+	res = strings.Replace(res, "DD", t.Format("02"), -1)
+	res = strings.Replace(res, "D", t.Format("2"), -1)
+	res = strings.Replace(res, "YYYY", t.Format("2006"), -1)
+	res = strings.Replace(res, "YY", t.Format("06"), -1)
+	res = strings.Replace(res, "HH", fmt.Sprintf("%02d", t.Hour()), -1)
+	res = strings.Replace(res, "H", fmt.Sprintf("%d", t.Hour()), -1)
+	res = strings.Replace(res, "hh", t.Format("03"), -1)
+	res = strings.Replace(res, "h", t.Format("3"), -1)
+	res = strings.Replace(res, "mm", t.Format("04"), -1)
+	res = strings.Replace(res, "m", t.Format("4"), -1)
+	res = strings.Replace(res, "ss", t.Format("05"), -1)
+	res = strings.Replace(res, "s", t.Format("5"), -1)
+	return res
+}
+
+// DateFormat pattern rules.
+var datePatterns = []string{
+	// year
+	"Y", "2006", // A full numeric representation of a year, 4 digits   Examples: 1999 or 2003
+	"y", "06", //A two digit representation of a year   Examples: 99 or 03
+
+	// month
+	"m", "01", // Numeric representation of a month, with leading zeros 01 through 12
+	"n", "1", // Numeric representation of a month, without leading zeros   1 through 12
+	"M", "Jan", // A short textual representation of a month, three letters Jan through Dec
+	"F", "January", // A full textual representation of a month, such as January or March   January through December
+
+	// day
+	"d", "02", // Day of the month, 2 digits with leading zeros 01 to 31
+	"j", "2", // Day of the month without leading zeros 1 to 31
+
+	// week
+	"D", "Mon", // A textual representation of a day, three letters Mon through Sun
+	"l", "Monday", // A full textual representation of the day of the week  Sunday through Saturday
+
+	// time
+	"g", "3", // 12-hour format of an hour without leading zeros    1 through 12
+	"G", "15", // 24-hour format of an hour without leading zeros   0 through 23
+	"h", "03", // 12-hour format of an hour with leading zeros  01 through 12
+	"H", "15", // 24-hour format of an hour with leading zeros  00 through 23
+
+	"a", "pm", // Lowercase Ante meridiem and Post meridiem am or pm
+	"A", "PM", // Uppercase Ante meridiem and Post meridiem AM or PM
+
+	"i", "04", // Minutes with leading zeros    00 to 59
+	"s", "05", // Seconds, with leading zeros   00 through 59
+
+	// time zone
+	"T", "MST",
+	"P", "-07:00",
+	"O", "-0700",
+
+	// RFC 2822
+	"r", time.RFC1123Z,
+}
+
+// Parse Date use PHP time format.
+func DateParse(dateString, format string) (time.Time, error) {
+	replacer := strings.NewReplacer(datePatterns...)
+	format = replacer.Replace(format)
+	return time.ParseInLocation(format, dateString, time.Local)
+}

vendor/github.com/felipeweb/gopher-utils/time_test.go

@@ -0,0 +1,32 @@
+package gopher_utils
+
+import (
+	. "github.com/smartystreets/goconvey/convey"
+	"testing"
+	"time"
+	"runtime"
+)
+
+func TestDate(t *testing.T) {
+	Convey("Convert unix date format to string", t, func() {
+		if runtime.GOOS == "darwin" {
+			So(Date(1, "DD/MM/YYYY"), ShouldEqual, "31/12/1969")
+		} else {
+			So(Date(1, "DD/MM/YYYY"), ShouldEqual, "01/01/1970")
+		}
+	})
+	Convey("Convert unix date in string format to humman string", t, func() {
+		if runtime.GOOS == "darwin" {
+			So(DateS("1", "DD/MM/YYYY"), ShouldEqual, "31/12/1969")
+		} else {
+			So(DateS("1", "DD/MM/YYYY"), ShouldEqual, "01/01/1970")
+		}
+	})
+	Convey("Convert time object to string", t, func() {
+		if runtime.GOOS == "darwin" {
+			So(DateT(time.Unix(int64(1), 0), "DD/MM/YYYY"), ShouldEqual, "31/12/1969")
+		} else {
+			So(DateT(time.Unix(int64(1), 0), "DD/MM/YYYY"), ShouldEqual, "01/01/1970")
+		}
+	})
+}