v3 - main to cut out

pkg/utils/strings.go

@@ -0,0 +1,96 @@
+/*
+** description("").
+** copyright('tuoyun,www.tuoyun.net').
+** author("fg,Gordon@tuoyun.net").
+** time(2021/4/8 15:09).
+ */
+package utils
+
+import (
+	"Open_IM/pkg/common/constant"
+	"encoding/json"
+	"math/rand"
+	"strconv"
+)
+
+func IntToString(i int) string {
+	return strconv.FormatInt(int64(i), 10)
+}
+
+func StringToInt(i string) int {
+	j, _ := strconv.Atoi(i)
+	return j
+}
+func StringToInt64(i string) int64 {
+	j, _ := strconv.ParseInt(i, 10, 64)
+	return j
+}
+func StringToInt32(i string) int32 {
+	j, _ := strconv.ParseInt(i, 10, 64)
+	return int32(j)
+}
+func Int32ToString(i int32) string {
+	return strconv.FormatInt(int64(i), 10)
+}
+
+//judge a string whether in the  string list
+func IsContain(target string, List []string) bool {
+	for _, element := range List {
+
+		if target == element {
+			return true
+		}
+	}
+	return false
+}
+func IsContainInt32(target int32, List []int32) bool {
+	for _, element := range List {
+		if target == element {
+			return true
+		}
+	}
+	return false
+}
+
+func InterfaceArrayToStringArray(data []interface{}) (i []string) {
+	for _, param := range data {
+		i = append(i, param.(string))
+	}
+	return i
+}
+func StructToJsonString(param interface{}) string {
+	dataType, _ := json.Marshal(param)
+	dataString := string(dataType)
+	return dataString
+}
+
+func StructToJsonBytes(param interface{}) []byte {
+	dataType, _ := json.Marshal(param)
+	return dataType
+}
+
+//The incoming parameter must be a pointer
+func JsonStringToStruct(s string, args interface{}) error {
+	err := json.Unmarshal([]byte(s), args)
+	return err
+}
+
+func GetMsgID(sendID string) string {
+	t := int64ToString(GetCurrentTimestampByNano())
+	return Md5(t + sendID + int64ToString(rand.Int63n(GetCurrentTimestampByNano())))
+}
+func GetConversationIDBySessionType(sourceID string, sessionType int) string {
+	switch sessionType {
+	case constant.SingleChatType:
+		return "single_" + sourceID
+	case constant.GroupChatType:
+		return "group_" + sourceID
+	}
+	return ""
+}
+func int64ToString(i int64) string {
+	return strconv.FormatInt(i, 10)
+}
+func Int64ToString(i int64) string {
+	return strconv.FormatInt(i, 10)
+}