myself_util/commonutil/util.go

package commonutil

import (
	cryptoRand "crypto/rand"
	"fmt"
	"io"
	"log"
	"math/big"
	"runtime"
	"strconv"
)

// ObjToString obj转string类型
func ObjToString(old interface{}) string {
	if nil == old {
		return ""
	} else {
		r, _ := old.(string)
		return r
	}
}

// IntAll obj转int
func IntAll(num interface{}) int {
	return IntAllDef(num, 0)
}

// Int64All obj转int64
func Int64All(num interface{}) int64 {
	if i, ok := num.(int64); ok {
		return int64(i)
	} else if i0, ok0 := num.(int32); ok0 {
		return int64(i0)
	} else if i1, ok1 := num.(float64); ok1 {
		return int64(i1)
	} else if i2, ok2 := num.(int); ok2 {
		return int64(i2)
	} else if i3, ok3 := num.(float32); ok3 {
		return int64(i3)
	} else if i4, ok4 := num.(string); ok4 {
		i64, _ := strconv.ParseInt(i4, 10, 64)
		//in, _ := strconv.Atoi(i4)
		return i64
	} else if i5, ok5 := num.(int16); ok5 {
		return int64(i5)
	} else if i6, ok6 := num.(int8); ok6 {
		return int64(i6)
	} else if i7, ok7 := num.(*big.Int); ok7 {
		in, _ := strconv.ParseInt(fmt.Sprint(i7), 10, 64)
		return int64(in)
	} else if i8, ok8 := num.(*big.Float); ok8 {
		in, _ := strconv.ParseInt(fmt.Sprint(i8), 10, 64)
		return int64(in)
	} else {
		return 0
	}
}

func IntAllDef(num interface{}, defaultNum int) int {
	if i, ok := num.(int); ok {
		return int(i)
	} else if i0, ok0 := num.(int32); ok0 {
		return int(i0)
	} else if i1, ok1 := num.(float64); ok1 {
		return int(i1)
	} else if i2, ok2 := num.(int64); ok2 {
		return int(i2)
	} else if i3, ok3 := num.(float32); ok3 {
		return int(i3)
	} else if i4, ok4 := num.(string); ok4 {
		in, _ := strconv.Atoi(i4)
		return int(in)
	} else if i5, ok5 := num.(int16); ok5 {
		return int(i5)
	} else if i6, ok6 := num.(int8); ok6 {
		return int(i6)
	} else if i7, ok7 := num.(*big.Int); ok7 {
		in, _ := strconv.Atoi(fmt.Sprint(i7))
		return int(in)
	} else if i8, ok8 := num.(*big.Float); ok8 {
		in, _ := strconv.Atoi(fmt.Sprint(i8))
		return int(in)
	} else {
		return defaultNum
	}
}

// Float64All obj转float64
func Float64All(num interface{}) float64 {
	if i, ok := num.(float64); ok {
		return float64(i)
	} else if i0, ok0 := num.(int32); ok0 {
		return float64(i0)
	} else if i1, ok1 := num.(int64); ok1 {
		return float64(i1)
	} else if i2, ok2 := num.(int); ok2 {
		return float64(i2)
	} else if i3, ok3 := num.(float32); ok3 {
		return float64(i3)
	} else if i4, ok4 := num.(string); ok4 {
		in, _ := strconv.ParseFloat(i4, 64)
		return in
	} else if i5, ok5 := num.(int16); ok5 {
		return float64(i5)
	} else if i6, ok6 := num.(int8); ok6 {
		return float64(i6)
	} else if i6, ok6 := num.(uint); ok6 {
		return float64(i6)
	} else if i6, ok6 := num.(uint8); ok6 {
		return float64(i6)
	} else if i6, ok6 := num.(uint16); ok6 {
		return float64(i6)
	} else if i6, ok6 := num.(uint32); ok6 {
		return float64(i6)
	} else if i6, ok6 := num.(uint64); ok6 {
		return float64(i6)
	} else if i7, ok7 := num.(*big.Float); ok7 {
		in, _ := strconv.ParseFloat(fmt.Sprint(i7), 64)
		return float64(in)
	} else if i8, ok8 := num.(*big.Int); ok8 {
		in, _ := strconv.ParseFloat(fmt.Sprint(i8), 64)
		return float64(in)
	} else {
		return 0
	}
}

// GetLetterRandom 获取复杂的随机数
func GetLetterRandom(length int, flag ...bool) string {
	var idChars = []byte("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz")
	var mod byte = 52
	if len(flag) > 0 && flag[0] {
		idChars = []byte("ABCDEFGHIJKLMNOPQRSTUVWXYZ")
		mod = 26
	}
	b := make([]byte, length)
	maxrb := byte(256 - (256 % int(mod)))
	i := 0
EXIT:
	for {
		r := make([]byte, length+(length/4))
		if _, err := io.ReadFull(cryptoRand.Reader, r); err != nil {
			panic("captcha: error reading random source: " + err.Error())
		}
		for _, c := range r {
			if c > maxrb {
				continue
			}
			b[i] = c % mod
			i++
			if i == length {
				break EXIT
			}
		}
	}
	for i, c := range b {
		b[i] = idChars[c]
	}
	return string(b)
}

// Catch 出错拦截
func Catch() {
	if r := recover(); r != nil {
		log.Println(r)
		for skip := 0; ; skip++ {
			_, file, line, ok := runtime.Caller(skip)
			if !ok {
				break
			}
			go log.Printf("%v,%v\n", file, line)
		}
	}
}