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io.go
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io.go
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package core
import (
"encoding/binary"
"encoding/hex"
"github.com/icodeface/grdp/glog"
"io"
)
type ReadBytesComplete func(result []byte, err error)
func StartReadBytes(len int, r io.Reader, cb ReadBytesComplete) {
b := make([]byte, len)
go func() {
_, err := io.ReadFull(r, b)
glog.Debug("GetBytes: ", hex.EncodeToString(b))
cb(b, err)
}()
}
func ReadBytes(len int, r io.Reader) ([]byte, error) {
b := make([]byte, len)
length, err := io.ReadFull(r, b)
return b[:length], err
}
func ReadByte(r io.Reader) (byte, error) {
b, err := ReadBytes(1, r)
return b[0], err
}
func ReadUInt8(r io.Reader) (uint8, error) {
b, err := ReadBytes(1, r)
return uint8(b[0]), err
}
func ReadUint16LE(r io.Reader) (uint16, error) {
b := make([]byte, 2)
_, err := io.ReadFull(r, b)
if err != nil {
return 0, nil
}
return binary.LittleEndian.Uint16(b), nil
}
func ReadUint16BE(r io.Reader) (uint16, error) {
b := make([]byte, 2)
_, err := io.ReadFull(r, b)
if err != nil {
return 0, nil
}
return binary.BigEndian.Uint16(b), nil
}
func ReadUInt32LE(r io.Reader) (uint32, error) {
b := make([]byte, 4)
_, err := io.ReadFull(r, b)
if err != nil {
return 0, nil
}
return binary.LittleEndian.Uint32(b), nil
}
func ReadUInt32BE(r io.Reader) (uint32, error) {
b := make([]byte, 4)
_, err := io.ReadFull(r, b)
if err != nil {
return 0, nil
}
return binary.BigEndian.Uint32(b), nil
}
func WriteByte(data byte, w io.Writer) (int, error) {
b := make([]byte, 1)
b[0] = byte(data)
return w.Write(b)
}
func WriteBytes(data []byte, w io.Writer) (int, error) {
return w.Write(data)
}
func WriteUInt8(data uint8, w io.Writer) (int, error) {
b := make([]byte, 1)
b[0] = byte(data)
return w.Write(b)
}
func WriteUInt16BE(data uint16, w io.Writer) (int, error) {
b := make([]byte, 2)
binary.BigEndian.PutUint16(b, data)
return w.Write(b)
}
func WriteUInt16LE(data uint16, w io.Writer) (int, error) {
b := make([]byte, 2)
binary.LittleEndian.PutUint16(b, data)
return w.Write(b)
}
func WriteUInt32LE(data uint32, w io.Writer) (int, error) {
b := make([]byte, 4)
binary.LittleEndian.PutUint32(b, data)
return w.Write(b)
}
func WriteUInt32BE(data uint32, w io.Writer) (int, error) {
b := make([]byte, 4)
binary.BigEndian.PutUint32(b, data)
return w.Write(b)
}