first commit

pkg/helper/string_util.go

@@ -0,0 +1,144 @@
+package helper
+
+import (
+	"crypto/md5"
+	"encoding/hex"
+	"encoding/json"
+	"fmt"
+	"regexp"
+	"sort"
+	"strconv"
+	"strings"
+	"time"
+)
+
+const (
+	PhotoDomainUrl  = "https://photo-app.ddegame.cn/"
+	TimeLayout      = "2006-01-02 15:04:05"
+	DateLayout      = "2006-01-02"
+	DateLayoutShort = "20060102"
+)
+
+func FullPhotoUrl(path string) string {
+	if len(path) == 0 {
+		return ""
+	}
+	if strings.Index(path, "http") == 0 {
+		return path
+	}
+	return PhotoDomainUrl + path
+}
+
+func Md5ForList(s ...string) string {
+	sort.Strings(s)
+	h := md5.New()
+	h.Write([]byte(strings.Join(s, "")))
+	return hex.EncodeToString(h.Sum(nil))
+}
+
+func StringToInt(source string) int {
+	target, _ := strconv.Atoi(source)
+	return target
+}
+
+func StringToInt64(source string) int64 {
+	target, _ := strconv.Atoi(source)
+	return int64(target)
+}
+
+func StringToFloat(source string) float64 {
+	target, _ := strconv.ParseFloat(source, 64)
+	return target
+}
+
+func StringIntPlus(s1, s2 string) string {
+	return strconv.Itoa(StringToInt(s1) + StringToInt(s2))
+}
+
+func StringIntMultiply(s1, s2 string) string {
+	return strconv.Itoa(StringToInt(s1) * StringToInt(s2))
+}
+
+func StringIntSub(s1, s2 string) string {
+	return strconv.Itoa(StringToInt(s1) - StringToInt(s2))
+}
+
+func StringFloatSub(s1, s2 string) string {
+	return strconv.FormatFloat(StringToFloat(s1)-StringToFloat(s2), 'f', -1, 64)
+}
+
+func ListToSet(list []string) (set []string) {
+	m := make(map[string]bool, 0)
+	for i := range list {
+		m[list[i]] = true
+	}
+	for k := range m {
+		set = append(set, k)
+	}
+	return
+}
+
+func ToJson(source interface{}) []byte {
+	b, _ := json.Marshal(source)
+	return b
+}
+
+func NowTimeToString() string {
+	return time.Now().Format(TimeLayout)
+}
+
+func NowTimeIncreaseString(t time.Duration) string {
+	now := time.Now()
+	now.Add(t)
+	return now.Format(TimeLayout)
+}
+
+func NowDateToString() string {
+	return time.Now().Format(DateLayout)
+}
+
+func NowDateToStringShort() string {
+	return time.Now().Format(DateLayoutShort)
+}
+
+func Md5(s string) string {
+	h := md5.New()
+	h.Write([]byte(s))
+	return hex.EncodeToString(h.Sum(nil))
+}
+
+func ZeroFillByStr(str string, resultLen int, reverse bool) string {
+	if len(str) > resultLen || resultLen <= 0 {
+		return str
+	}
+	if reverse {
+		return fmt.Sprintf("%0*s", resultLen, str) //不足前置补零
+	}
+	result := str
+	for i := 0; i < resultLen-len(str); i++ {
+		result += "0"
+	}
+	return result
+
+}
+
+func IsMobile(no string) bool {
+	return regexp.MustCompile("^1[3456789]\\d{9}$").MatchString(no)
+}
+
+func IsEmail(email string) bool {
+	pattern := `^[0-9a-z][_.0-9a-z-]{0,31}@([0-9a-z][0-9a-z-]{0,30}[0-9a-z]\.){1,4}[a-z]{2,4}$`
+	return regexp.MustCompile(pattern).MatchString(email)
+}
+
+func LegalUsername(source string) bool {
+	return regexp.MustCompile("^\\D[\\w-]{5,17}$").MatchString(source)
+}
+
+func LegalShortUsername(source string) bool {
+	return regexp.MustCompile("^[a-zA-Z][\\w-]{2,17}$").MatchString(source)
+}
+
+func LegalPassword(source string) bool {
+	return regexp.MustCompile("^[a-zA-Z0-9,.!@#$%^&*()_-]{6,18}$").MatchString(source)
+}