message search (#60)

pkg/util/strings.go

@@ -3,6 +3,7 @@ package util
 import (
 	"fmt"
 	"strconv"
+	"strings"
 	"unicode"
 	"unicode/utf8"
 )
@@ -45,3 +46,26 @@ func IsNumeric(s string) bool {
 func SplitInt64ToTwoInt32(input int64) (int64, int64) {
 	return input & 0xFFFFFFFF, input >> 32
 }
+
+func Str2List(str string, sep string) []string {
+	list := make([]string, 0)
+
+	if str == "" {
+		return list
+	}
+
+	listMap := make(map[string]bool)
+	for _, elem := range strings.Split(str, sep) {
+		elem = strings.TrimSpace(elem)
+		if len(elem) == 0 {
+			continue
+		}
+		if _, ok := listMap[elem]; ok {
+			continue
+		}
+		listMap[elem] = true
+		list = append(list, elem)
+	}
+
+	return list
+}