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common.go
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common.go
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package wkutil
import (
"bytes"
"encoding/json"
"math"
"math/rand"
"strconv"
"strings"
"time"
)
// BoolToInt bool值转换为int值
func BoolToInt(b bool) int {
if b {
return 1
}
return 0
}
// IntToBool int值转换为bool
func IntToBool(b int) bool {
if b == 1 {
return true
}
return false
}
// ToJSON 将对象转换为JSON
func ToJSON(obj interface{}) string {
jsonData, err := json.Marshal(obj)
if err != nil {
return ""
}
return string(jsonData)
}
// JSONToMap JsonToMap
func JSONToMap(json string) (map[string]interface{}, error) {
var resultMap map[string]interface{}
err := ReadJSONByByte([]byte(json), &resultMap)
return resultMap, err
}
// ReadJSONByByte 读取JSON
func ReadJSONByByte(body []byte, obj interface{}) error {
mdz := json.NewDecoder(bytes.NewBuffer(body))
mdz.UseNumber()
err := mdz.Decode(obj)
if err != nil {
return err
}
return nil
}
var tenToAny map[int]string = map[int]string{
0: "0",
1: "1",
2: "2",
3: "3",
4: "4",
5: "5",
6: "6",
7: "7",
8: "8",
9: "9",
10: "a",
11: "b",
12: "c",
13: "d",
14: "e",
15: "f",
16: "g",
17: "h",
18: "i",
19: "j",
20: "k",
21: "l",
22: "m",
23: "n",
24: "o",
25: "p",
26: "q",
27: "r",
28: "s",
29: "t",
30: "u",
31: "v",
32: "w",
33: "x",
34: "y",
35: "z",
36: "A",
37: "B",
38: "C",
39: "D",
40: "E",
41: "F",
42: "G",
43: "H",
44: "I",
45: "J",
46: "K",
47: "L",
48: "M",
49: "N",
50: "O",
51: "P",
52: "Q",
53: "R",
54: "S",
55: "T",
56: "U",
57: "V",
58: "W",
59: "X",
60: "Y",
61: "Z"}
// DecimalToAny 10进制转任意进制
func DecimalToAny(num int64, n int) string {
newNumStr := ""
var remainder int64
var remainderString string
for num != 0 {
remainder = num % int64(n)
if 76 > remainder && remainder > 9 {
remainderString = tenToAny[int(remainder)]
} else {
remainderString = strconv.Itoa(int(remainder))
}
newNumStr = remainderString + newNumStr
num = num / int64(n)
}
return newNumStr
}
// map根据value找key
func findKey(in string) int {
result := -1
for k, v := range tenToAny {
if in == v {
result = k
}
}
return result
}
// AnyToDecimal 任意进制转10进制
func AnyToDecimal(num string, n int) int64 {
var newNum float64
newNum = 0.0
nNum := len(strings.Split(num, "")) - 1
for _, value := range strings.Split(num, "") {
tmp := float64(findKey(value))
if tmp != -1 {
newNum = newNum + tmp*math.Pow(float64(n), float64(nNum))
nNum = nNum - 1
} else {
break
}
}
return int64(newNum)
}
// GetRandomString 生成随机字符串
func GetRandomString(num int) string {
str := "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
bytes := []byte(str)
result := []byte{}
r := rand.New(rand.NewSource(time.Now().UnixNano()))
for i := 0; i < num; i++ {
result = append(result, bytes[r.Intn(len(bytes))])
}
return string(result)
}
func RemoveRepeatedElement(arr []string) (newArr []string) {
newArr = make([]string, 0)
for i := 0; i < len(arr); i++ {
repeat := false
for j := i + 1; j < len(arr); j++ {
if arr[i] == arr[j] {
repeat = true
break
}
}
if !repeat {
newArr = append(newArr, arr[i])
}
}
return
}