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txdata.go
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txdata.go
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package wire
import (
"encoding/binary"
"fmt"
"io"
)
type Extension string
// TODO: Write documentation on TxData.
type TxData struct {
Version int32
Type Extension
Data []byte
}
const (
// The Extention representing no extention. This symbolized raw data.
// It contains one null character so not to be confused with an extension
NONE = Extension("\x00")
)
func (tx *TxData) Serialize(w io.Writer) error {
err := binary.Write(w, binary.BigEndian, tx.Version)
if err != nil {
fmt.Println("Failed to serialize TxData:", err)
return err
}
err = binary.Write(w, binary.BigEndian, byte(len(tx.Type)))
if err != nil {
fmt.Println("Failed to serialize TxData:", err)
return err
}
err = binary.Write(w, binary.BigEndian, []byte(tx.Type))
if err != nil {
fmt.Println("Failed to serialize TxData:", err)
return err
}
err = binary.Write(w, binary.BigEndian, tx.Data)
if err != nil {
fmt.Println("Failed to serialize TxData:", err)
return err
}
return nil
}
func (tx *TxData) Deserialize(r io.Reader) error {
err := binary.Read(r, binary.BigEndian, &tx.Version)
if err != nil {
fmt.Println("Failed to deserialize TxData:", err)
return err
}
var sizeType byte
err = binary.Read(r, binary.BigEndian, &sizeType)
if err != nil {
fmt.Println("Failed to deserialize TxData:", err)
return err
}
buf := make([]byte, sizeType)
_, err = r.Read(buf)
if err != nil {
fmt.Println("Failed to deserialize TxData:", err)
return err
}
tx.Type = Extension(buf)
data := make([]byte, 0, 2048)
buf = make([]byte, 2048)
for {
n, err := r.Read(buf)
data = append(data, buf[:n]...)
if err == io.EOF {
break
}
if err != nil {
fmt.Println("Failed to deserialize TxData:", err)
return err
}
}
tx.Data = data
return nil
}
func (tx *TxData) SerializeSize() int {
// tx.Version + len(tx.Type) + tx.Type + tx.Data
return 4 + 1 + len(tx.Type) + len(tx.Data)
}
func (tx *TxData) GetVersion() int32 {
return tx.Version
}
func (tx *TxData) GetType() int32 {
return TxTypeData
}
func NewTxData() *TxData {
tx := &TxData{
Version: 1,
Type: NONE,
Data: nil,
}
return tx
}