tsgutils

package module
v0.0.0-...-a86b05b Latest Latest
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 Go to latest Published: Nov 26, 2018 License: AGPL-3.0 Imports: 14 Imported by: 0

README

Go utils

Some of frequently used utils.
intro
file function
id_generator GUID, UUID
json StructToJson, JsonToStruct
log CheckAndPrintError
signer HmacSha256Base64Signer, Md5Signer
string Trim, Replace, Contains, ToArray, ToInt, ToInt64, ToFloat, Substring, Append, StringBuilder, Clear, Remove,RemoveLast
string_builder StringBuilder,Append,Replace,RemoveLast
interface_builder InterfaceBuilder, Append, Clear
time Millisecond, EpochTime, IsoTime, UTC, StringToTime, TimeToString
other,utils_test IIIOperator, symbol, test
Installation
$ go get -u github.com/typa01/go-utils
Usage
More info see: utils_test.go
import (
	tsgutils "github.com/typa01/go-utils"
)

	str1 := tsgutils.NewString("13990521234")
	str2 := tsgutils.NewString("14")
	str3 := str1.Substring(0, 2).Append(str2).AppendString("520")
	println(str1.ToString())
	println(str2.ToString())
	println(str3.ToString())

	builder := NewStringBuilder()
	builder.Append("a").Append("b").Append("c")
	str := builder.ToString()

func (user *User) Rows2struct(rows *mysql.Rows) {
	var users []User
	builder := tsgutils.NewInterfaceBuilder()
	for rows.Next() {
		builder.Clear()
		builder.Append(&user.Host).Append(&user.User)
		builder.Append(&user.AuthenticationString)
		err := rows.Scan(builder.ToInterfaces()...)
		tsgutils.CheckAndPrintError("MySQL query rows scan error", err)
		users = append(users, *user)
	}
	if rows != nil {
		defer rows.Close()
	}
	user.Users = users
}
The future will continue to be updated.
https://blog.csdn.net/typa01_kk/article/category/7629914

Documentation

Index

Constants

View Source 
const (
	DOT               = "."
	COMMA             = ","
	SEMICOLON         = ""
	COLON             = ":"
	AET               = "@"
	HLINE             = "-"
	UNDERLINE         = "_"
	EMPTY             = ""
	BRACKET_LEFT      = "["
	BRACKET_RIGHT     = "]"
	BRACE_LEFT        = "{"
	BRACE_RIGHT       = "}"
	PARENTHESIS_LEFT  = "("
	PARENTHESIS_RIGHT = ")"
	SPRIT             = "/"
	AND               = "&"
	QUESTION          = "?"
	EQUAL             = "="
	PROTOCOL          = "://"
	HTTP              = "http://"
	HTTPS             = "https://"
	LF                = "\n"
	CR                = "\r"
	SPACE             = " "
)
View Source 
const (
	MILLION = 1000000
)

Variables

View Source 
var LAYOUT = map[int]string{
	1: "2006-01-02",
	2: "2006-01-02 15:04",
	3: "2006-01-02 15:04:05",
	4: "2006-01-02 15:04:05.001",
	5: "2006-01-02T15:04:05.001Z",
	6: "1136214245.001",
}

Functions

func ArrayToString 

func ArrayToString(arrays []string) string

[9 9 8 4 2 9 1 7 - a 5 4 b - 3 3 1 6 - c d f 3 - 8 7 d 9 f b 5 7] -> "99842917-a54b-3316-cdf3-87d9fb57"

func CheckAndPrintError 

func CheckAndPrintError(flag string, err error)

If there is an error print it, pass it

func EpochTime 

func EpochTime(time time.Time) string

Get a epoch time 

eg: 1521221737.376

func EpochTimeNow 

func EpochTimeNow() string

func EpochToTime 

func EpochToTime(epoch string) (time.Time, error)

func FirstCaseToUpper 

func FirstCaseToUpper(str string, first bool) string

first = false: "aaa_bbb_ccc" -> "aaaBbbCcc" first = true: "aaa_bbb_ccc" -> "AaaBbbCcc"

func FmtPrintln 

func FmtPrintln(info interface{})

func GUID 

func GUID() string

return eg: 4725f5ae6a350b1c45687c9934456e6f

func HmacSha256Base64Signer 

func HmacSha256Base64Signer(message string, secretKey string) (string, error)

signing a message using: hmac sha256 + base64 

eg:
  message = Pre_hash function comment
  secretKey = E65791902180E9EF4510DB6A77F6EBAE

return signed string = TO6uwdqz+31SIPkd4I+9NiZGmVH74dXi+Fd5X0EzzSQ=

func IIIInterfaceOperator 

func IIIInterfaceOperator(condition bool, trueValue, falseValue interface{}) interface{}

ternary operator, replace other language: a == b ? c : d

func InterfaceToInt 

func InterfaceToInt(i interface{}) int

func InterfaceToString 

func InterfaceToString(i interface{}) string

func IsoTime 

func IsoTime(time time.Time) string

Get a iso time 

eg: 2018-03-16T18:02:48.284Z

func IsoTimeNow 

func IsoTimeNow() string

func IsoToTime 

func IsoToTime(iso string) (time.Time, error)

iso time change to time.Time eg: "2018-11-18T16:51:55.933Z" -> 2018-11-18 16:51:55.000000933 +0000 UTC

func JsonToStruct 

func JsonToStruct(jsonString string, object interface{})
  Convert json string to struct
  eg:
	jsonString := "{\"field1\":\"Welcome to time space chain ...\",\"field2\":\"1688\",\"field3\":\"1314.521\"}"

	var info Info
	Json2Struct(jsonString, &info)
	println(info.Field1)
  print:
    Welcome to time space chain ...

func Md5Signer 

func Md5Signer(message string) string

md5 sign: "123" -> "202cb962ac59075b964b07152d234b70"

func Millisecond 

func Millisecond() int64

get system current time's millisecond

func Nanosecond 

func Nanosecond() int64

get system current time's nanosecond

func PreHashString 

func PreHashString(timestamp string, method string, requestPath string, body string) string

the pre hash string 

eg:
  timestamp = 2018-03-08T10:59:25.789Z
  method  = POST
  request_path = /orders?before=2&limit=30
  body = {"product_id":"BTC-USD-0309","order_id":"377454671037440"}

return pre hash string = 2018-03-08T10:59:25.789ZPOST/orders?before=2&limit=30{"product_id":"BTC-USD-0309","order_id":"377454671037440"}

func Print 

func Print(arg ...interface{})

func Println 

func Println(arg ...interface{})

func Second 

func Second() int64

get system current time's second

func Stdout 

func Stdout(arg ...interface{})

func StringToTime 

func StringToTime(timeString string, layoutNo int) (time.Time, error)

func StructToJson 

func StructToJson(object interface{}) string

* 

  Convert struct to json string
  eg:
	type Info struct {
		Field1 string  `json:"field1"`
		Field2 int64   `json:"field2,string"`
		Field3 float64 `json:"field3,string"`
	}

	var info Info
	info.Field1 = "Welcome to time space chain ..."
	info.Field2 = 1688
	info.Field3 = 1314.521

  return:
    {"field1":"Welcome to time space chain ...","field2":"1688","field3":"1314.521"}

func TimeToString 

func TimeToString(time time.Time, layoutNo int) string

func UTC 

func UTC() string

Get a UTC time string eg: 2018-04-08 16:16:06.327540712 +0000 UTC

func UUID 

func UUID() string

return eg: e7486845-9f24-c3d8-0db1-fe61e25c88a2

Types

type Info 

type Info struct {
	Field1 string  `json:"field1"`
	Field2 int64   `json:"field2,string"`
	Field3 float64 `json:"field3,string"`
}

test struct

type InterfaceBuilder 

type InterfaceBuilder struct {
	// contains filtered or unexported fields
}

func NewInterfaceBuilder 

func NewInterfaceBuilder() *InterfaceBuilder

func (*InterfaceBuilder) Append 

func (builder *InterfaceBuilder) Append(arg interface{}) *InterfaceBuilder

func (*InterfaceBuilder) Appends 

func (builder *InterfaceBuilder) Appends(args ...interface{}) *InterfaceBuilder

func (*InterfaceBuilder) Clear 

func (builder *InterfaceBuilder) Clear() *InterfaceBuilder

func (*InterfaceBuilder) ToInterfaces 

func (builder *InterfaceBuilder) ToInterfaces() []interface{}

type String 

type String struct {
	// contains filtered or unexported fields
}
  String struct.
	  Usage:
		str1 := NewString("13990521234")
		str2 := NewString("14")
		str3 := str1.Substring(0, 2).Append(str2).AppendString("520")
		println(str1.ToString())
		println(str2.ToString())
		println(str3.ToString())
	  print:
		13990521234
		14
		1314520

func NewString 

func NewString(s string) *String

func NewStringFloat64 

func NewStringFloat64(f float64) *String

func NewStringInt 

func NewStringInt(i int) *String

func NewStringInt64 

func NewStringInt64(i int64) *String

func (*String) Append 

func (str *String) Append(arg *String) *String

func (*String) AppendFloat64 

func (str *String) AppendFloat64(f float64) *String

func (*String) AppendInt 

func (str *String) AppendInt(i int) *String

func (*String) AppendInt64 

func (str *String) AppendInt64(i int64) *String

func (*String) AppendString 

func (str *String) AppendString(arg string) *String

func (*String) Clear 

func (str *String) Clear() *String

func (*String) Contains 

func (str *String) Contains(chars string) bool

If a string contains a string, return true eg: "strings insert chars" 

chars = "insert" -> true
chars = "Insert" -> false
chars = "key" -> false

func (*String) ContainsIgnoreCase 

func (str *String) ContainsIgnoreCase(chars string) bool

If a string contains a string, return true, and ignore case. eg: "strings insert chars" 

chars = "insert" -> true
chars = "Insert" -> true
chars = "key" -> false

func (*String) EndsWith 

func (str *String) EndsWith(s string) bool

"123xxxbbb5990" -> "5990" = true

func (*String) Index 

func (str *String) Index(chars string) int

abcdef -> e = 4

func (*String) LastIndex 

func (str *String) LastIndex(chars string) int

abcdef -> b = 1

func (*String) Len 

func (str *String) Len() int

"123" -> 3

func (*String) Remove 

func (str *String) Remove(index int) *String

"abc" -> 1 -> "ac"

func (*String) RemoveLast 

func (str *String) RemoveLast() *String

"abc" -> "ab"

func (*String) Replace 

func (str *String) Replace(old, new string) *String

"%111%abc%987%" -> ("%", "$") -> "$111$abc$987$"

func (*String) StartsWith 

func (str *String) StartsWith(s string) bool

"123xxxbbb5990" -> "123x" = true

func (*String) Substring 

func (str *String) Substring(beginIndex, endIndex int) *String

str := NewString("abcde") str.Substring(0, 2) return: "ab"

func (*String) SubstringBegin 

func (str *String) SubstringBegin(beginIndex int) *String

str := NewString("abcde") str.SubstringBegin(2) return: "cde"

func (*String) SubstringEnd 

func (str *String) SubstringEnd(endIndex int) *String

str := NewString("abcde") str.SubstringEnd(3) return: "abc"

func (*String) ToArray 

func (str *String) ToArray() []string

"460364431014955c2483ec91230e5435" -> [4 6 0 3 6 4 4 3 1 0 1 4 9 5 5 c 2 4 8 3 e c 9 1 2 3 0 e 5 4 3 5]

func (*String) ToFloat 

func (str *String) ToFloat() (float64, error)

func (*String) ToInt 

func (str *String) ToInt() (int, error)

"12345" -> 12345

func (*String) ToInt64 

func (str *String) ToInt64() (int64, error)

func (*String) ToLower 

func (str *String) ToLower() *String

"aaa" -> "AAA"

func (*String) ToString 

func (str *String) ToString() string

func (*String) ToUpper 

func (str *String) ToUpper() *String

"BBB" -> "bbb"

func (*String) Trim 

func (str *String) Trim() *String

" 123 " -> "123" " 1 23 " -> "1 23"

type StringBuilder 

type StringBuilder struct {
	// contains filtered or unexported fields
}
  StringBuilder struct.
	  Usage:
		builder := NewStringBuilder()
		builder.Append("a").Append("b").Append("c")
		s := builder.String()
		println(s)
	  print:
		abc

func NewStringBuilder 

func NewStringBuilder() *StringBuilder

func NewStringBuilderString 

func NewStringBuilderString(str *String) *StringBuilder

func (*StringBuilder) Append 

func (builder *StringBuilder) Append(s string) *StringBuilder

func (*StringBuilder) AppendFloat64 

func (builder *StringBuilder) AppendFloat64(f float64) *StringBuilder

func (*StringBuilder) AppendInt 

func (builder *StringBuilder) AppendInt(i int) *StringBuilder

func (*StringBuilder) AppendInt64 

func (builder *StringBuilder) AppendInt64(i int64) *StringBuilder

func (*StringBuilder) AppendStrings 

func (builder *StringBuilder) AppendStrings(ss ...string) *StringBuilder

func (*StringBuilder) Clear 

func (builder *StringBuilder) Clear() *StringBuilder

func (*StringBuilder) RemoveLast 

func (builder *StringBuilder) RemoveLast() *StringBuilder

func (*StringBuilder) Replace 

func (builder *StringBuilder) Replace(old, new string) *StringBuilder

func (*StringBuilder) ToString 

func (builder *StringBuilder) ToString() string

Source Files

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