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272 lines
5.5 KiB
272 lines
5.5 KiB
/*
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* string functions
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*/
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package helper
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import (
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"errors"
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"fmt"
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"log"
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"math/rand"
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"regexp"
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"strconv"
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"strings"
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"time"
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)
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func ToString(v interface{}) string {
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var value string
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switch v.(type) {
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case string:
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value = v.(string)
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case int:
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value = strconv.Itoa(v.(int))
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case float64:
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value = strconv.FormatFloat(v.(float64), 'f', 2, 64)
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case float32:
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value = strconv.FormatFloat(float64(v.(float32)), 'f', 2, 64)
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case int64:
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value = strconv.FormatInt(v.(int64), 10)
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case []uint8:
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value = string(v.([]uint8))
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// case []byte:
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// value = string(v.([]byte))
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case interface{}:
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value = v.(string)
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case nil:
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value = ""
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default:
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log.Println("参数值类型错误", v, "not in string|int|float64|interface|int64")
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}
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return strings.Trim(value, " ")
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}
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func ToStr(v interface{}) string {
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var value string
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switch v.(type) {
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case string:
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value = v.(string)
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case int:
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value = strconv.Itoa(v.(int))
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case float64:
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value = strconv.FormatFloat(v.(float64), 'f', 0, 64)
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case float32:
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value = strconv.FormatFloat(float64(v.(float32)), 'f', 0, 64)
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case int64:
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value = strconv.FormatInt(v.(int64), 10)
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case []uint8:
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value = string(v.([]uint8))
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// case []byte:
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// value = string(v.([]byte))
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case interface{}:
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value = v.(string)
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case nil:
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value = ""
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default:
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log.Println("参数值类型错误", v, "not in string|int|float64|interface|int64")
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}
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return strings.Trim(value, " ")
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}
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func ToFloat64(v interface{}) (float64, error) {
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var value float64
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var err error = nil
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switch v.(type) {
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case string:
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v_tmp := v.(string)
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value, _ = strconv.ParseFloat(v_tmp, 64)
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case int:
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value = float64(v.(int))
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case int64:
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value = float64(v.(int64))
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case float64:
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value = v.(float64)
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case interface{}:
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value = v.(float64)
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case nil:
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value = 0
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default:
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err = errors.New("参数值类型错误")
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log.Println("参数值类型错误", v, "not in string|int|float64|interface|int64")
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}
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return value, err
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}
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func ToInt(inter interface{}) int {
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var value int
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switch inter.(type) {
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case string:
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value, _ = strconv.Atoi(inter.(string))
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case int:
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value = inter.(int)
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case int64:
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value = int(inter.(int64))
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case float64:
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value, _ = strconv.Atoi(fmt.Sprintf("%1.0f", inter))
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case nil:
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value = 0
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case interface{}:
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value = inter.(int)
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default:
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log.Println("参数值类型错误", inter, "not in string|int|float64|interface|int64")
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}
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return value
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}
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func ToInt64(inter interface{}) int64 {
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var value int64
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switch inter.(type) {
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case string:
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value, _ = strconv.ParseInt(inter.(string), 10, 64)
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case int:
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value = int64(inter.(int))
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case int64:
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value = inter.(int64)
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case float64:
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value_int, _ := strconv.Atoi(fmt.Sprintf("%1.0f", inter))
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value = int64(value_int)
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case nil:
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value = 0
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case interface{}:
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if _, ok := inter.(int64); !ok {
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value = inter.(int64)
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}
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default:
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log.Println("参数值类型错误", inter, "not in string|int|float64|interface|int64")
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}
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return value
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}
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//生成随机字符串
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func GetRandomString(length int) string {
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str := "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
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bytes := []byte(str)
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result := []byte{}
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r := rand.New(rand.NewSource(time.Now().UnixNano()))
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for i := 0; i < length; i++ {
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result = append(result, bytes[r.Intn(len(bytes))])
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}
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return string(result)
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}
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//生成随机数字
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func GetRandomNumber(length int) string {
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str := "0123456789"
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bytes := []byte(str)
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result := []byte{}
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r := rand.New(rand.NewSource(time.Now().UnixNano()))
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for i := 0; i < length; i++ {
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result = append(result, bytes[r.Intn(len(bytes))])
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}
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return string(result)
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}
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/**
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* 字符串转大驼峰 ios_bbbbbbbb -> IosBbbbbbbbb
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*/
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func StrFirstToUpper(str string) string {
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temp := strings.Split(str, "_")
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var upperStr string
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for y := 0; y < len(temp); y++ {
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vv := []rune(temp[y])
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for i := 0; i < len(vv); i++ {
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if i == 0 {
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vv[i] -= 32
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upperStr += string(vv[i])
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} else {
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upperStr += string(vv[i])
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}
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}
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}
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return upperStr
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}
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/**
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* 是否存在在字符切片中
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*/
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func IsInStringArray(arr []string, str string) bool {
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var isIn bool = false
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length := len(arr)
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if length < 1 {
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return false
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}
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for _, item := range arr {
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if item == str {
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isIn = true
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break
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}
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}
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return isIn
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}
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/**
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* 字符串在字符切片中对应索引
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*/
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func InStringArrayIndex(arr []string, str string) int {
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// var isIn bool = false
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length := len(arr)
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if length < 1 {
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return -1
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}
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var index int = -1
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for k, item := range arr {
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if item == str {
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// isIn = true
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index = k
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break
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}
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}
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return index
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}
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/*
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* 删除多余空格
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* 2019/05/05
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*/
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func DeleteExtraSpace(s string) string {
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s1 := strings.Replace(s, " ", " ", -1) //替换tab
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regstr := "\\s{2,}" //两个及两个以上空格的正则表达式
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reg, _ := regexp.Compile(regstr) //编译正则表达式
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s2 := make([]byte, len(s1))
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copy(s2, s1)
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spc_index := reg.FindStringIndex(string(s2)) //在字符串中搜索
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for len(spc_index) > 0 {
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s2 = append(s2[:spc_index[0]+1], s2[spc_index[1]:]...) //删除多余空格
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spc_index = reg.FindStringIndex(string(s2))
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}
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return string(s2)
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}
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/*
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* 连接多个字符串
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* 2019/05/05
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*/
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func StringJoin(s ...string) string {
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var build strings.Builder
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if len(s) > 0 {
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for _, v := range s {
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build.WriteString(v)
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}
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}
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return build.String()
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}
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/*
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* 连接url
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* 2019/05/05
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*/
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func UrlJoin(host, url string) string {
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if strings.Contains(url, "http://") {
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return url
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}
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if strings.Contains(url, "https://") {
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return url
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}
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return StringJoin(host, url)
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}
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