tencent-im/internal/conv/conv.go
2022-09-27 11:31:23 +08:00

109 lines
1.8 KiB
Go

/**
* @Author: Echo
* @Email:1711788888@qq.com
* @Date: 2021/8/31 11:16 下午
* @Desc: TODO
*/
package conv
import (
"encoding/json"
"fmt"
"reflect"
"strconv"
"time"
)
type stringInterface interface {
String() string
}
type errorInterface interface {
Error() string
}
func String(any interface{}) string {
switch v := any.(type) {
case nil:
return ""
case string:
return v
case int:
return strconv.Itoa(v)
case int8:
return strconv.Itoa(int(v))
case int16:
return strconv.Itoa(int(v))
case int32:
return strconv.Itoa(int(v))
case int64:
return strconv.FormatInt(v, 10)
case uint:
return strconv.FormatUint(uint64(v), 10)
case uint8:
return strconv.FormatUint(uint64(v), 10)
case uint16:
return strconv.FormatUint(uint64(v), 10)
case uint64:
return strconv.FormatUint(v, 10)
case float32:
return strconv.FormatFloat(float64(v), 'f', -1, 32)
case float64:
return strconv.FormatFloat(v, 'f', -1, 64)
case bool:
return strconv.FormatBool(v)
case []byte:
return string(v)
case time.Time:
return v.String()
case *time.Time:
if v == nil {
return ""
}
return v.String()
default:
if v == nil {
return ""
}
if i, ok := v.(stringInterface); ok {
return i.String()
}
if i, ok := v.(errorInterface); ok {
return i.Error()
}
var (
rv = reflect.ValueOf(v)
kind = rv.Kind()
)
switch kind {
case reflect.Chan,
reflect.Map,
reflect.Slice,
reflect.Func,
reflect.Ptr,
reflect.Interface,
reflect.UnsafePointer:
if rv.IsNil() {
return ""
}
case reflect.String:
return rv.String()
}
if kind == reflect.Ptr {
return String(rv.Elem().Interface())
}
if b, e := json.Marshal(v); e != nil {
return fmt.Sprint(v)
} else {
return string(b)
}
}
}