convertor

package
v2.2.4 Latest Latest
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 Go to latest Published: Aug 1, 2023 License: MIT Imports: 14 Imported by: 62

Documentation

Overview

Package convertor implements some functions to convert data.

Package convertor implements some functions to convert data.

Index

Examples

Constants

This section is empty.

Variables

This section is empty.

Functions

func ColorHexToRGB 

func ColorHexToRGB(colorHex string) (red, green, blue int)

ColorHexToRGB convert hex color to rgb color. Play: https://go.dev/play/p/o7_ft-JCJBV

Example 
colorHex := "#003366"
r, g, b := ColorHexToRGB(colorHex)

fmt.Println(r, g, b)

Output:

0 51 102

func ColorRGBToHex 

func ColorRGBToHex(red, green, blue int) string

ColorRGBToHex convert rgb color to hex color. Play: https://go.dev/play/p/nzKS2Ro87J1

Example 
r := 0
g := 51
b := 102
colorHex := ColorRGBToHex(r, g, b)

fmt.Println(colorHex)

Output:

#003366

func CopyProperties added in v2.1.16 

func CopyProperties[T, U any](dst T, src U) error

CopyProperties copies each field from the source into the destination. It recursively copies struct pointers and interfaces that contain struct pointers. use json.Marshal/Unmarshal, so json tag should be set for fields of dst and src struct. Play: https://go.dev/play/p/oZujoB5Sgg5

Example 
type Disk struct {
	Name    string  `json:"name"`
	Total   string  `json:"total"`
	Used    string  `json:"used"`
	Percent float64 `json:"percent"`
}

type DiskVO struct {
	Name    string  `json:"name"`
	Total   string  `json:"total"`
	Used    string  `json:"used"`
	Percent float64 `json:"percent"`
}

type Indicator struct {
	Id      string    `json:"id"`
	Ip      string    `json:"ip"`
	UpTime  string    `json:"upTime"`
	LoadAvg string    `json:"loadAvg"`
	Cpu     int       `json:"cpu"`
	Disk    []Disk    `json:"disk"`
	Stop    chan bool `json:"-"`
}

type IndicatorVO struct {
	Id      string   `json:"id"`
	Ip      string   `json:"ip"`
	UpTime  string   `json:"upTime"`
	LoadAvg string   `json:"loadAvg"`
	Cpu     int64    `json:"cpu"`
	Disk    []DiskVO `json:"disk"`
}

indicator := &Indicator{Id: "001", Ip: "127.0.0.1", Cpu: 1, Disk: []Disk{
	{Name: "disk-001", Total: "100", Used: "1", Percent: 10},
	{Name: "disk-002", Total: "200", Used: "1", Percent: 20},
	{Name: "disk-003", Total: "300", Used: "1", Percent: 30},
}}

indicatorVO := IndicatorVO{}

CopyProperties(&indicatorVO, indicator)

fmt.Println(indicatorVO.Id)
fmt.Println(indicatorVO.Ip)
fmt.Println(len(indicatorVO.Disk))

Output:

001
127.0.0.1
3

func DecodeByte added in v2.1.6 

func DecodeByte(data []byte, target any) error

DecodeByte decode byte slice data to target object. Play: https://go.dev/play/p/zI6xsmuQRbn

Example 
var obj string
byteData := []byte{6, 12, 0, 3, 97, 98, 99}
err := DecodeByte(byteData, &obj)
if err != nil {
	return
}

fmt.Println(obj)

Output:

abc

func DeepClone added in v2.1.15 

func DeepClone[T any](src T) T

DeepClone creates a deep copy of passed item. can't clone unexported field of struct Play: https://go.dev/play/p/j4DP5dquxnk

Example 
type Struct struct {
	Str   string
	Int   int
	Float float64
	Bool  bool
	Nil   interface{}
	// unexported string
}

cases := []interface{}{
	true,
	1,
	0.1,
	map[string]int{
		"a": 1,
		"b": 2,
	},
	&Struct{
		Str:   "test",
		Int:   1,
		Float: 0.1,
		Bool:  true,
		Nil:   nil,
		// unexported: "can't be cloned",
	},
}

for _, item := range cases {
	cloned := DeepClone(item)

	isPointerEqual := &cloned == &item
	fmt.Println(cloned, isPointerEqual)
}

Output:

true false
1 false
0.1 false
map[a:1 b:2] false
&{test 1 0.1 true <nil>} false

func EncodeByte added in v2.1.6 

func EncodeByte(data any) ([]byte, error)

EncodeByte encode data to byte slice. Play: https://go.dev/play/p/DVmM1G5JfuP

Example 
byteData, _ := EncodeByte("abc")
fmt.Println(byteData)

Output:

[6 12 0 3 97 98 99]

func GbkToUtf8 added in v2.2.2 

func GbkToUtf8(bs []byte) ([]byte, error)

GbkToUtf8 convert GBK encoding data to utf8 encoding data. Play: https://go.dev/play/p/OphmHCN_9u8

Example 
gbkData, _ := Utf8ToGbk([]byte("hello"))
utf8Data, _ := GbkToUtf8(gbkData)

fmt.Println(utf8.Valid(utf8Data))
fmt.Println(string(utf8Data))

Output:

true
hello

func MapToSlice added in v2.1.2 

func MapToSlice[T any, K comparable, V any](aMap map[K]V, iteratee func(K, V) T) []T

MapToSlice convert map to slice based on iteratee function. Play: https://go.dev/play/p/dmX4Ix5V6Wl

Example 
aMap := map[string]int{"a": 1, "b": 2, "c": 3}
result := MapToSlice(aMap, func(key string, value int) string {
	return key + ":" + strconv.Itoa(value)
})

fmt.Println(result) //[]string{"a:1", "c:3", "b:2"} (random order)

Output:

func StructToMap 

func StructToMap(value any) (map[string]any, error)

StructToMap convert struct to map, only convert exported struct field map key is specified same as struct field tag `json` value. Play: https://go.dev/play/p/KYGYJqNUBOI

Example 
type People struct {
	Name string `json:"name"`
	age  int
}
p := People{
	"test",
	100,
}
pm, _ := StructToMap(p)

fmt.Println(pm)

Output:

map[name:test]

func ToBool 

func ToBool(s string) (bool, error)

ToBool convert string to boolean. Play: https://go.dev/play/p/ARht2WnGdIN

Example 
cases := []string{"1", "true", "True", "false", "False", "0", "123", "0.0", "abc"}

for i := 0; i < len(cases); i++ {
	result, _ := ToBool(cases[i])
	fmt.Println(result)
}

Output:

true
true
true
false
false
false
false
false
false

func ToBytes 

func ToBytes(value any) ([]byte, error)

ToBytes convert value to byte slice. Play: https://go.dev/play/p/fAMXYFDvOvr

Example 
result1, _ := ToBytes(1)
result2, _ := ToBytes("abc")
result3, _ := ToBytes(true)

fmt.Println(result1)
fmt.Println(result2)
fmt.Println(result3)

Output:

[0 0 0 0 0 0 0 1]
[97 98 99]
[116 114 117 101]

func ToChannel added in v2.1.2 

func ToChannel[T any](array []T) <-chan T

ToChannel convert a slice of elements to a read-only channel. Play: https://go.dev/play/p/hOx_oYZbAnL

Example 
ch := ToChannel([]int{1, 2, 3})
result1 := <-ch
result2 := <-ch
result3 := <-ch

fmt.Println(result1)
fmt.Println(result2)
fmt.Println(result3)

Output:

1
2
3

func ToChar 

func ToChar(s string) []string

ToChar convert string to char slice. Play: https://go.dev/play/p/JJ1SvbFkVdM

Example 
result1 := ToChar("")
result2 := ToChar("abc")
result3 := ToChar("1 2#3")

fmt.Println(result1)
fmt.Println(result2)
fmt.Println(result3)

Output:

[]
[a b c]
[1   2 # 3]

func ToFloat 

func ToFloat(value any) (float64, error)

ToFloat convert value to float64, if input is not a float return 0.0 and error. Play: https://go.dev/play/p/4YTmPCibqHJ

Example 
result1, _ := ToFloat("")
result2, _ := ToFloat("abc")
result3, _ := ToFloat("-1")
result4, _ := ToFloat("-.11")
result5, _ := ToFloat("1.23e3")
result6, _ := ToFloat(true)

fmt.Println(result1)
fmt.Println(result2)
fmt.Println(result3)
fmt.Println(result4)
fmt.Println(result5)
fmt.Println(result6)

Output:

0
0
-1
-0.11
1230
0

func ToInt 

func ToInt(value any) (int64, error)

ToInt convert value to int64 value, if input is not numerical, return 0 and error. Play: https://go.dev/play/p/9_h9vIt-QZ_b

Example 
result1, _ := ToInt("123")
result2, _ := ToInt("-123")
result3, _ := ToInt(float64(12.3))
result4, _ := ToInt("abc")
result5, _ := ToInt(true)

fmt.Println(result1)
fmt.Println(result2)
fmt.Println(result3)
fmt.Println(result4)
fmt.Println(result5)

Output:

123
-123
12
0
0

func ToInterface added in v2.2.0 

func ToInterface(v reflect.Value) (value interface{}, ok bool)

ToInterface converts reflect value to its interface type. Play: https://go.dev/play/p/syqw0-WG7Xd

Example 
val := reflect.ValueOf("abc")
iVal, ok := ToInterface(val)

fmt.Printf("%T\n", iVal)
fmt.Printf("%v\n", iVal)
fmt.Println(ok)

Output:

string
abc
true

func ToJson 

func ToJson(value any) (string, error)

ToJson convert value to a json string. Play: https://go.dev/play/p/2rLIkMmXWvR

Example 
aMap := map[string]int{"a": 1, "b": 2, "c": 3}
result1, err := ToJson(aMap)
if err != nil {
	fmt.Printf("%v", err)
}
fmt.Println(result1)

Output:

{"a":1,"b":2,"c":3}

func ToMap added in v2.1.2 

func ToMap[T any, K comparable, V any](array []T, iteratee func(T) (K, V)) map[K]V

ToMap convert a slice of structs to a map based on iteratee function. Play: https://go.dev/play/p/tVFy7E-t24l

Example 
type Message struct {
	name string
	code int
}
messages := []Message{
	{name: "Hello", code: 100},
	{name: "Hi", code: 101},
}
result := ToMap(messages, func(msg Message) (int, string) {
	return msg.code, msg.name
})

fmt.Println(result)

Output:

map[100:Hello 101:Hi]

func ToPointer added in v2.1.1 

func ToPointer[T any](value T) *T

ToPointer returns a pointer to passed value. Play: https://go.dev/play/p/ASf_etHNlw1

Example 
result := ToPointer(123)
fmt.Println(*result)

Output:

123

func ToString 

func ToString(value any) string

ToString convert value to string for number, string, []byte, will convert to string for other type (slice, map, array, struct) will call json.Marshal. Play: https://go.dev/play/p/nF1zOOslpQq

Example 
result1 := ToString("")
result2 := ToString(nil)
result3 := ToString(0)
result4 := ToString(1.23)
result5 := ToString(true)
result6 := ToString(false)
result7 := ToString([]int{1, 2, 3})

fmt.Println(result1)
fmt.Println(result2)
fmt.Println(result3)
fmt.Println(result4)
fmt.Println(result5)
fmt.Println(result6)
fmt.Println(result7)

Output:


0
1.23
true
false
[1,2,3]

func Utf8ToGbk added in v2.2.2 

func Utf8ToGbk(bs []byte) ([]byte, error)

Utf8ToGbk convert utf8 encoding data to GBK encoding data. Play: https://go.dev/play/p/9FlIaFLArIL

Example 
utf8Data := []byte("hello")
gbkData, _ := Utf8ToGbk(utf8Data)

fmt.Println(utf8.Valid(utf8Data))
fmt.Println(validator.IsGBK(gbkData))

Output:

true
true

Types

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Source Files

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