mirror of https://github.com/goharbor/harbor.git
88 lines
2.5 KiB
Go
88 lines
2.5 KiB
Go
// Copyright (C) MongoDB, Inc. 2017-present.
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License"); you may
|
|
// not use this file except in compliance with the License. You may obtain
|
|
// a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
package bsoncodec
|
|
|
|
import (
|
|
"fmt"
|
|
"reflect"
|
|
|
|
"go.mongodb.org/mongo-driver/bson/bsonoptions"
|
|
"go.mongodb.org/mongo-driver/bson/bsonrw"
|
|
"go.mongodb.org/mongo-driver/bson/bsontype"
|
|
)
|
|
|
|
var defaultByteSliceCodec = NewByteSliceCodec()
|
|
|
|
// ByteSliceCodec is the Codec used for []byte values.
|
|
type ByteSliceCodec struct {
|
|
EncodeNilAsEmpty bool
|
|
}
|
|
|
|
var _ ValueCodec = &ByteSliceCodec{}
|
|
|
|
// NewByteSliceCodec returns a StringCodec with options opts.
|
|
func NewByteSliceCodec(opts ...*bsonoptions.ByteSliceCodecOptions) *ByteSliceCodec {
|
|
byteSliceOpt := bsonoptions.MergeByteSliceCodecOptions(opts...)
|
|
codec := ByteSliceCodec{}
|
|
if byteSliceOpt.EncodeNilAsEmpty != nil {
|
|
codec.EncodeNilAsEmpty = *byteSliceOpt.EncodeNilAsEmpty
|
|
}
|
|
return &codec
|
|
}
|
|
|
|
// EncodeValue is the ValueEncoder for []byte.
|
|
func (bsc *ByteSliceCodec) EncodeValue(ec EncodeContext, vw bsonrw.ValueWriter, val reflect.Value) error {
|
|
if !val.IsValid() || val.Type() != tByteSlice {
|
|
return ValueEncoderError{Name: "ByteSliceEncodeValue", Types: []reflect.Type{tByteSlice}, Received: val}
|
|
}
|
|
if val.IsNil() && !bsc.EncodeNilAsEmpty {
|
|
return vw.WriteNull()
|
|
}
|
|
return vw.WriteBinary(val.Interface().([]byte))
|
|
}
|
|
|
|
// DecodeValue is the ValueDecoder for []byte.
|
|
func (bsc *ByteSliceCodec) DecodeValue(dc DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error {
|
|
if !val.CanSet() || val.Type() != tByteSlice {
|
|
return ValueDecoderError{Name: "ByteSliceDecodeValue", Types: []reflect.Type{tByteSlice}, Received: val}
|
|
}
|
|
|
|
var data []byte
|
|
var err error
|
|
switch vrType := vr.Type(); vrType {
|
|
case bsontype.String:
|
|
str, err := vr.ReadString()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
data = []byte(str)
|
|
case bsontype.Symbol:
|
|
sym, err := vr.ReadSymbol()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
data = []byte(sym)
|
|
case bsontype.Binary:
|
|
var subtype byte
|
|
data, subtype, err = vr.ReadBinary()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if subtype != bsontype.BinaryGeneric && subtype != bsontype.BinaryBinaryOld {
|
|
return fmt.Errorf("ByteSliceDecodeValue can only be used to decode subtype 0x00 or 0x02 for %s, got %v", bsontype.Binary, subtype)
|
|
}
|
|
case bsontype.Null:
|
|
val.Set(reflect.Zero(val.Type()))
|
|
return vr.ReadNull()
|
|
default:
|
|
return fmt.Errorf("cannot decode %v into a []byte", vrType)
|
|
}
|
|
|
|
val.Set(reflect.ValueOf(data))
|
|
return nil
|
|
}
|