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authorWim <wim@42.be>2021-12-12 00:05:15 +0100
committerGitHub <noreply@github.com>2021-12-12 00:05:15 +0100
commit3893a035be347a7687a41d2054dd1b274d3a0504 (patch)
treedfe4a3bf72a0a6356e51bd8fc2e88e9a26e52331 /vendor/github.com/google/uuid/null.go
parent658bdd9faa835660ae407331732e9d93d8f6443b (diff)
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Update dependencies/vendor (#1659)
Diffstat (limited to 'vendor/github.com/google/uuid/null.go')
-rw-r--r--vendor/github.com/google/uuid/null.go118
1 files changed, 118 insertions, 0 deletions
diff --git a/vendor/github.com/google/uuid/null.go b/vendor/github.com/google/uuid/null.go
new file mode 100644
index 00000000..d7fcbf28
--- /dev/null
+++ b/vendor/github.com/google/uuid/null.go
@@ -0,0 +1,118 @@
+// Copyright 2021 Google Inc. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package uuid
+
+import (
+ "bytes"
+ "database/sql/driver"
+ "encoding/json"
+ "fmt"
+)
+
+var jsonNull = []byte("null")
+
+// NullUUID represents a UUID that may be null.
+// NullUUID implements the SQL driver.Scanner interface so
+// it can be used as a scan destination:
+//
+// var u uuid.NullUUID
+// err := db.QueryRow("SELECT name FROM foo WHERE id=?", id).Scan(&u)
+// ...
+// if u.Valid {
+// // use u.UUID
+// } else {
+// // NULL value
+// }
+//
+type NullUUID struct {
+ UUID UUID
+ Valid bool // Valid is true if UUID is not NULL
+}
+
+// Scan implements the SQL driver.Scanner interface.
+func (nu *NullUUID) Scan(value interface{}) error {
+ if value == nil {
+ nu.UUID, nu.Valid = Nil, false
+ return nil
+ }
+
+ err := nu.UUID.Scan(value)
+ if err != nil {
+ nu.Valid = false
+ return err
+ }
+
+ nu.Valid = true
+ return nil
+}
+
+// Value implements the driver Valuer interface.
+func (nu NullUUID) Value() (driver.Value, error) {
+ if !nu.Valid {
+ return nil, nil
+ }
+ // Delegate to UUID Value function
+ return nu.UUID.Value()
+}
+
+// MarshalBinary implements encoding.BinaryMarshaler.
+func (nu NullUUID) MarshalBinary() ([]byte, error) {
+ if nu.Valid {
+ return nu.UUID[:], nil
+ }
+
+ return []byte(nil), nil
+}
+
+// UnmarshalBinary implements encoding.BinaryUnmarshaler.
+func (nu *NullUUID) UnmarshalBinary(data []byte) error {
+ if len(data) != 16 {
+ return fmt.Errorf("invalid UUID (got %d bytes)", len(data))
+ }
+ copy(nu.UUID[:], data)
+ nu.Valid = true
+ return nil
+}
+
+// MarshalText implements encoding.TextMarshaler.
+func (nu NullUUID) MarshalText() ([]byte, error) {
+ if nu.Valid {
+ return nu.UUID.MarshalText()
+ }
+
+ return jsonNull, nil
+}
+
+// UnmarshalText implements encoding.TextUnmarshaler.
+func (nu *NullUUID) UnmarshalText(data []byte) error {
+ id, err := ParseBytes(data)
+ if err != nil {
+ nu.Valid = false
+ return err
+ }
+ nu.UUID = id
+ nu.Valid = true
+ return nil
+}
+
+// MarshalJSON implements json.Marshaler.
+func (nu NullUUID) MarshalJSON() ([]byte, error) {
+ if nu.Valid {
+ return json.Marshal(nu.UUID)
+ }
+
+ return jsonNull, nil
+}
+
+// UnmarshalJSON implements json.Unmarshaler.
+func (nu *NullUUID) UnmarshalJSON(data []byte) error {
+ if bytes.Equal(data, jsonNull) {
+ *nu = NullUUID{}
+ return nil // valid null UUID
+ }
+ err := json.Unmarshal(data, &nu.UUID)
+ nu.Valid = err == nil
+ return err
+}