/
bytestr.go
97 lines (87 loc) · 1.92 KB
/
bytestr.go
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package util
import (
"fmt"
"github.com/vmihailenco/msgpack"
"math/rand"
"time"
"unsafe"
)
var (
numsBytes = "1234567890"
letterBytes = "1234567890abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
)
func BytesToStr(b []byte) string {
return *(*string)(unsafe.Pointer(&b))
}
func StrToBytes(s string) []byte {
x := (*[2]uintptr)(unsafe.Pointer(&s))
h := [3]uintptr{x[0], x[1], x[1]}
return *(*[]byte)(unsafe.Pointer(&h))
}
func RandString(n int) string {
b := make([]byte, n)
for i := range b {
b[i] = letterBytes[rand.Intn(len(letterBytes))]
}
return string(b)
}
func RandBytes(n int) []byte {
b := make([]byte, n)
for i := range b {
b[i] = letterBytes[rand.Intn(len(letterBytes))]
}
return b
}
func RandCodeString(n int) string {
b := make([]byte, n)
for i := range b {
b[i] = numsBytes[rand.Intn(len(numsBytes))]
}
return string(b)
}
func ShuffleString(s string) string {
r := rand.New(rand.NewSource(time.Now().Unix()))
ret := make([]byte, len(s))
perm := r.Perm(len(s))
for i, randIndex := range perm {
ret[i] = s[randIndex]
}
return string(ret)
}
func ShuffleBytes(b []byte) []byte {
r := rand.New(rand.NewSource(time.Now().Unix()))
ret := make([]byte, len(b))
perm := r.Perm(len(b))
for i, randIndex := range perm {
ret[i] = b[randIndex]
}
return ret
}
func Float2String(v interface{}) map[string]interface{} {
data, _ := msgpack.Marshal(v)
m := map[string]interface{}{}
msgpack.Unmarshal(data, &m)
for k, vv := range m {
if fv, ok := vv.(float32); ok {
m[k] = fmt.Sprintf("%.2f", fv)
continue
}
if fv, ok := vv.(float64); ok {
m[k] = fmt.Sprintf("%.2f", fv)
continue
}
if mv, ok := vv.(map[string]interface{}); ok {
m[k] = Float2String(mv)
}
if mv, ok := vv.(map[interface{}]interface{}); ok {
m[k] = Float2String(mv)
}
if av, ok := vv.([]interface{}); ok {
for i, avv := range av {
av[i] = Float2String(avv)
}
m[k] = av
}
}
return m
}