fix: remove unused functions RegexpFindSubString, String2int, Utf8ToGbk and unused imports

server/utils/utils.go

@@ -8,24 +8,19 @@ import (
 	"crypto/rand"
 	"crypto/sha256"
 	"encoding/base64"
-	"errors"
 	"fmt"
 	"image"
 	"image/png"
-	"io/ioutil"
 	"net"
 	"os"
 	"path/filepath"
 	"reflect"
-	"regexp"
 	"sort"
 	"strconv"
 	"strings"
 	"time"
 
 	"golang.org/x/crypto/ssh"
-	"golang.org/x/text/encoding/simplifiedchinese"
-	"golang.org/x/text/transform"
 
 	"github.com/google/uuid"
 	"golang.org/x/crypto/pbkdf2"
@@ -259,24 +254,6 @@ func DeCryptPassword(cryptPassword string, key []byte) (string, error) {
 	return string(decryptedCBC), nil
 }
 
-func RegexpFindSubString(text string, reg *regexp.Regexp) (ret string, err error) {
-	findErr := errors.New("regexp find failed")
-	res := reg.FindStringSubmatch(text)
-	if len(res) != 2 {
-		return "", findErr
-	}
-	return res[1], nil
-
-}
-
-func String2int(s string) (int, error) {
-	i, err := strconv.Atoi(s)
-	if err != nil {
-		return 0, err
-	}
-	return i, nil
-}
-
 func RunCommand(client *ssh.Client, command string) (stdout string, err error) {
 	session, err := client.NewSession()
 	if err != nil {
@@ -316,15 +293,6 @@ func DirSize(path string) (int64, error) {
 	return size, err
 }
 
-func Utf8ToGbk(s []byte) ([]byte, error) {
-	reader := transform.NewReader(bytes.NewReader(s), simplifiedchinese.GBK.NewEncoder())
-	d, e := ioutil.ReadAll(reader)
-	if e != nil {
-		return nil, e
-	}
-	return d, nil
-}
-
 func Decimal(value float64) float64 {
 	value, _ = strconv.ParseFloat(fmt.Sprintf("%.2f", value), 64)
 	return value