cbor

package
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Published: Dec 10, 2022 License: MIT Imports: 10 Imported by: 33

Documentation

Overview

Package implementing the CBOR -- Concise Binary Object Notation -- http://cbor.io/ -- spec.

CBOR is more or less freely interchangable with json: it's schemaless, and composed of similar map and array types. However, CBOR is binary, length delimited -- and thus very fast to parse, and can store binary data without expansion problems -- and also distinguishes types like integer, string, float, and bytes all clearly from each other.

The `cbor.Marshal` and `cbor.Unmarshal` functions are the quickest way to convert your Go objects to and from serial CBOR.

The `cbor.NewMarshaller` and `cbor.NewUmarshaller` functions give a little more control. If performance is important, prefer these; recycling the marshaller instances will significantly cut down on memory allocations and improve performance.

The `*Atlased` variants of constructors allow you set up marshalling with an `refmt/obj/atlas.Atlas`, unlocking all of refmt's advanced features and custom object mapping powertools.

The `cbor.Encoder` and `cbor.Decoder` types implement the low-level functionality of converting serial CBOR byte streams into refmt Token streams. Users don't usually need to use these directly.

Index

Constants

This section is empty.

Variables

This section is empty.

Functions

func Marshal

func Marshal(v interface{}) ([]byte, error)

func MarshalAtlased

func MarshalAtlased(v interface{}, atl atlas.Atlas) ([]byte, error)

func Unmarshal

func Unmarshal(cfg DecodeOptions, data []byte, v interface{}) error

func UnmarshalAtlased

func UnmarshalAtlased(cfg DecodeOptions, data []byte, v interface{}, atl atlas.Atlas) error

Types

type DecodeOptions

type DecodeOptions struct {
	CoerceUndefToNull bool
}

func (DecodeOptions) IsDecodeOptions

func (DecodeOptions) IsDecodeOptions()

marker method -- you may use this type to instruct `refmt.Marshal` what kind of encoder to use.

type Decoder

type Decoder struct {
	// contains filtered or unexported fields
}

func NewDecoder

func NewDecoder(cfg DecodeOptions, r io.Reader) (d *Decoder)

func (*Decoder) Reset

func (d *Decoder) Reset()

func (*Decoder) Step

func (d *Decoder) Step(tokenSlot *Token) (done bool, err error)

type EncodeOptions

type EncodeOptions struct {
}

func (EncodeOptions) IsEncodeOptions

func (EncodeOptions) IsEncodeOptions()

marker method -- you may use this type to instruct `refmt.Marshal` what kind of encoder to use.

type Encoder

type Encoder struct {
	// contains filtered or unexported fields
}

func NewEncoder

func NewEncoder(w io.Writer) (d *Encoder)

func (*Encoder) Reset

func (d *Encoder) Reset()

func (*Encoder) Step

func (d *Encoder) Step(tokenSlot *Token) (done bool, err error)

type ErrInvalidTokenStream

type ErrInvalidTokenStream struct {
	Got        Token
	Acceptable []TokenType
}

Error raised by Encoder when invalid tokens or invalid ordering, e.g. a MapClose with no matching open. Should never be seen by the user in practice unless generating their own token streams.

func (*ErrInvalidTokenStream) Error

func (e *ErrInvalidTokenStream) Error() string

type Marshaller

type Marshaller struct {
	// contains filtered or unexported fields
}

func NewMarshaller

func NewMarshaller(wr io.Writer) *Marshaller

func NewMarshallerAtlased

func NewMarshallerAtlased(wr io.Writer, atl atlas.Atlas) *Marshaller

func (*Marshaller) Marshal

func (x *Marshaller) Marshal(v interface{}) error

type Unmarshaller

type Unmarshaller struct {
	// contains filtered or unexported fields
}

func NewUnmarshaller

func NewUnmarshaller(cfg DecodeOptions, r io.Reader) *Unmarshaller

func NewUnmarshallerAtlased

func NewUnmarshallerAtlased(cfg DecodeOptions, r io.Reader, atl atlas.Atlas) *Unmarshaller

func (*Unmarshaller) Unmarshal

func (x *Unmarshaller) Unmarshal(v interface{}) error

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