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124 lines
3.1 KiB
124 lines
3.1 KiB
package util
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import (
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"encoding/hex"
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"fmt"
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"regexp"
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"sort"
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"strings"
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uuid "github.com/satori/go.uuid"
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)
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var GUUID *UUIDFactory = new(UUIDFactory)
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var EmptyUUID = "00000000-0000-0000-0000-000000000000"
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type UUIDFactory struct {
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uid uuid.UUID
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}
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func (nu *UUIDFactory) NewV1() *UUIDFactory {
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uid := uuid.NewV1()
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nu.uid = uid
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return nu
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}
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func (nu *UUIDFactory) Sort() []byte {
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return UUIDToBytes(nu.String())
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}
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func (nu *UUIDFactory) String() string {
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return Sort(nu.uid.String()) //strings.Replace(Sort(nu.uid.String()), "-", "", -1)
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}
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func BytesToUUID(b []byte) string {
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hs := hex.EncodeToString(b)
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return hs[0:8] + "-" + hs[8:12] + "-" + hs[12:16] + "-" + hs[16:20] + "-" + hs[20:32]
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}
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func UUIDToBytes(s string) []byte {
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if s == "" {
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fmt.Println("空uid")
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return []byte("00000000-0000-0000-0000-000000000000")
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}
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if !IsUUID(s) {
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fmt.Errorf("非法UUID：%s", s)
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}
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if strings.Contains(s, "-") {
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s = strings.Replace(s, "-", "", -1)
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}
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b, err := hex.DecodeString(s)
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if err != nil {
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//CheckError(err)
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}
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return b
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}
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//校验是否为合法的UUID，合法UUID格式为16进制字符和“-”组成，类似如下的格式：
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//（1）11e90a62-f2fa-07ce-9e60-0242ac110007
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//（2）11E90A62-F2fa-07ce-9e60-0242ac11000A
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//（3）11e90a62f2fa07ce9e600242ac110007
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//（4）11E90A62F2fa07ce9e600242ac11000A
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//以下格式字符串为非法UUID：
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//（1）11e90a62-f2fa-07ce-9e60-0242ac11000x（包含16进制字符之外的字符“x”，非法）
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//（2）11e90a62-f2fa-07ce-9e60-0242ac11000X（包含16进制字符之外的字符“X”，非法）
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//（3）11e90a62f2fa07ce9e600242ac11000x（包含16进制字符之外的字符“x”，非法）
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//（4）11e90a62f2fa07ce9e600242ac11000X（包含16进制字符之外的字符“X”，非法）
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//（5）11e90a62f2fa07ce9e600242ac11000（不包含“-”27位，非法）
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//（6）11e90a62-f2fa-07ce-9e60-0242ac11000（31位，非法）
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//（7）11e90a62-f2fa-07ce-9e600242ac110007（缺少“-”的31位字符串，非法）
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func IsUUID(s string) bool {
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const pattern = `[0-9a-fA-F]{8}(-[0-9a-fA-F]{4}){3}-[0-9a-fA-F]{12}|[0-9a-fA-F]{32}`
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if b, err := regexp.MatchString(pattern, s); b && err == nil {
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return true
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}
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return false
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}
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func Sort(uid string) string {
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us := strings.Split(uid, "-")
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var res []string
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res = append(res, us[1]+us[2])
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res = append(res, string([]rune(us[0])[4:8]))
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res = append(res, string([]rune(us[0])[:4]))
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res = append(res, us[3])
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res = append(res, us[4])
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return strings.Join(res, "-")
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}
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func IsEmptyUUID(uid string) bool {
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return len(uid) == 0 ||
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len(strings.TrimSpace(uid)) == 0 ||
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uid == "00000000-0000-0000-0000-000000000000" ||
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uid == "00000000000000000000000000000000" ||
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uid == "30780000-0000-0000-0000-000000000000"
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}
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func IsValidUUID(uid string) bool {
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return !IsEmptyUUID(uid) && IsUUID(uid)
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}
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// 数组切片去重
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func SliceRemoveDuplicates(slice []string) []string {
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sort.Strings(slice)
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i := 0
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var j int
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for {
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if i >= len(slice)-1 {
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break
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}
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for j = i + 1; j < len(slice) && slice[i] == slice[j]; j++ {
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}
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slice = append(slice[:i+1], slice[j:]...)
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i++
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}
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return slice
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}
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