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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,73 @@ | ||
| package common | ||
|
|
||
| import ( | ||
| "encoding/json" | ||
| "math/rand" | ||
| "strconv" | ||
| "unsafe" | ||
| ) | ||
|
|
||
| func GetStringIfEmpty(str string, defaultValue string) string { | ||
| if str == "" { | ||
| return defaultValue | ||
| } | ||
| return str | ||
| } | ||
|
|
||
| func GetRandomString(length int) string { | ||
| //rand.Seed(time.Now().UnixNano()) | ||
| key := make([]byte, length) | ||
| for i := 0; i < length; i++ { | ||
| key[i] = keyChars[rand.Intn(len(keyChars))] | ||
| } | ||
| return string(key) | ||
| } | ||
|
|
||
| func MapToJsonStr(m map[string]interface{}) string { | ||
| bytes, err := json.Marshal(m) | ||
| if err != nil { | ||
| return "" | ||
| } | ||
| return string(bytes) | ||
| } | ||
|
|
||
| func MapToJsonStrFloat(m map[string]float64) string { | ||
| bytes, err := json.Marshal(m) | ||
| if err != nil { | ||
| return "" | ||
| } | ||
| return string(bytes) | ||
| } | ||
|
|
||
| func StrToMap(str string) map[string]interface{} { | ||
| m := make(map[string]interface{}) | ||
| err := json.Unmarshal([]byte(str), &m) | ||
| if err != nil { | ||
| return nil | ||
| } | ||
| return m | ||
| } | ||
|
|
||
| func String2Int(str string) int { | ||
| num, err := strconv.Atoi(str) | ||
| if err != nil { | ||
| return 0 | ||
| } | ||
| return num | ||
| } | ||
|
|
||
| func StringsContains(strs []string, str string) bool { | ||
| for _, s := range strs { | ||
| if s == str { | ||
| return true | ||
| } | ||
| } | ||
| return false | ||
| } | ||
|
|
||
| // StringToByteSlice []byte only read, panic on append | ||
| func StringToByteSlice(s string) []byte { | ||
| tmp1 := (*[2]uintptr)(unsafe.Pointer(&s)) | ||
| tmp2 := [3]uintptr{tmp1[0], tmp1[1], tmp1[1]} | ||
| return *(*[]byte)(unsafe.Pointer(&tmp2)) | ||
| } |
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