mirror of
https://github.com/edouardparis/lntop
synced 2024-11-17 21:26:12 +00:00
110 lines
2.9 KiB
Go
110 lines
2.9 KiB
Go
// Copyright (C) 2013-2018 by Maxim Bublis <b@codemonkey.ru>
|
|
//
|
|
// Permission is hereby granted, free of charge, to any person obtaining
|
|
// a copy of this software and associated documentation files (the
|
|
// "Software"), to deal in the Software without restriction, including
|
|
// without limitation the rights to use, copy, modify, merge, publish,
|
|
// distribute, sublicense, and/or sell copies of the Software, and to
|
|
// permit persons to whom the Software is furnished to do so, subject to
|
|
// the following conditions:
|
|
//
|
|
// The above copyright notice and this permission notice shall be
|
|
// included in all copies or substantial portions of the Software.
|
|
//
|
|
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
|
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
|
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
|
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
|
|
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
|
|
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
|
|
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
|
|
|
package uuid
|
|
|
|
import (
|
|
"bytes"
|
|
"database/sql/driver"
|
|
"encoding/json"
|
|
"fmt"
|
|
)
|
|
|
|
// Value implements the driver.Valuer interface.
|
|
func (u UUID) Value() (driver.Value, error) {
|
|
return u.String(), nil
|
|
}
|
|
|
|
// Scan implements the sql.Scanner interface.
|
|
// A 16-byte slice will be handled by UnmarshalBinary, while
|
|
// a longer byte slice or a string will be handled by UnmarshalText.
|
|
func (u *UUID) Scan(src interface{}) error {
|
|
switch src := src.(type) {
|
|
case UUID: // support gorm convert from UUID to NullUUID
|
|
*u = src
|
|
return nil
|
|
|
|
case []byte:
|
|
if len(src) == Size {
|
|
return u.UnmarshalBinary(src)
|
|
}
|
|
return u.UnmarshalText(src)
|
|
|
|
case string:
|
|
return u.UnmarshalText([]byte(src))
|
|
}
|
|
|
|
return fmt.Errorf("uuid: cannot convert %T to UUID", src)
|
|
}
|
|
|
|
// NullUUID can be used with the standard sql package to represent a
|
|
// UUID value that can be NULL in the database.
|
|
type NullUUID struct {
|
|
UUID UUID
|
|
Valid bool
|
|
}
|
|
|
|
// Value implements the driver.Valuer interface.
|
|
func (u NullUUID) Value() (driver.Value, error) {
|
|
if !u.Valid {
|
|
return nil, nil
|
|
}
|
|
// Delegate to UUID Value function
|
|
return u.UUID.Value()
|
|
}
|
|
|
|
// Scan implements the sql.Scanner interface.
|
|
func (u *NullUUID) Scan(src interface{}) error {
|
|
if src == nil {
|
|
u.UUID, u.Valid = Nil, false
|
|
return nil
|
|
}
|
|
|
|
// Delegate to UUID Scan function
|
|
u.Valid = true
|
|
return u.UUID.Scan(src)
|
|
}
|
|
|
|
// MarshalJSON marshals the NullUUID as null or the nested UUID
|
|
func (u NullUUID) MarshalJSON() ([]byte, error) {
|
|
if !u.Valid {
|
|
return json.Marshal(nil)
|
|
}
|
|
|
|
return json.Marshal(u.UUID)
|
|
}
|
|
|
|
// UnmarshalJSON unmarshals a NullUUID
|
|
func (u *NullUUID) UnmarshalJSON(b []byte) error {
|
|
if bytes.Equal(b, []byte("null")) {
|
|
u.UUID, u.Valid = Nil, false
|
|
return nil
|
|
}
|
|
|
|
if err := json.Unmarshal(b, &u.UUID); err != nil {
|
|
return err
|
|
}
|
|
|
|
u.Valid = true
|
|
|
|
return nil
|
|
}
|