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utils.go
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/
utils.go
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/**
* @Author: DollarKiller
* @Description: 工具库
* @Github: https://github.com/dollarkillerx
* @Date: Create in 18:08 2019-09-29
*/
package erguotou
import (
"bytes"
"crypto/sha256"
"encoding/hex"
"fmt"
"github.com/dollarkillerx/erguotou/fasthttp"
"math/rand"
"runtime"
"strconv"
"time"
)
func HttpSplice(h1, h2 string) string {
u := string(h1[len(h1)-1])
if u == "/" {
u = h1[:len(h1)-1]
} else {
u = h1
}
u2 := string(h2[0])
if u2 == "/" {
u += h2
} else {
u += "/" + h2
}
return u
}
type Utils struct{}
func (u *Utils) Get(url string) ([]byte, error) {
statusCode, body, err := fasthttp.Get(nil, url)
if err != nil {
return nil, err
}
if statusCode != 200 {
return nil, fmt.Errorf(strconv.Itoa(statusCode))
}
return body, nil
}
// 打印堆栈信息
func (u *Utils) PanicTrace(kb int) []byte {
s := []byte("/src/runtime/panic.go")
e := []byte("\ngoroutine ")
line := []byte("\n")
stack := make([]byte, kb<<10) //4KB
length := runtime.Stack(stack, true)
start := bytes.Index(stack, s)
stack = stack[start:length]
start = bytes.Index(stack, line) + 1
stack = stack[start:]
end := bytes.LastIndex(stack, line)
if end != -1 {
stack = stack[:end]
}
end = bytes.Index(stack, e)
if end != -1 {
stack = stack[:end]
}
stack = bytes.TrimRight(stack, "\n")
return stack
}
func (u *Utils) SuperRand() string {
head := int(time.Now().UnixNano())
body := rand.Intn(999999)
footer := int(time.Now().UnixNano())
encode := u.Sha256Encode(strconv.Itoa(head + body + footer))
return encode
}
// 获取sha256
func (u *Utils) Sha256Encode(str string) string {
sum256 := sha256.Sum256([]byte(str))
s := hex.EncodeToString(sum256[:])
return s
}