Golang git-masontest-com-branches-gomysqlproxy-app-models-bytes2.ChunkedWriter类(方法)实例源码

// EncodeString encodes a string.
func EncodeString(buf *bytes2.ChunkedWriter, key string, val string) {
	// Encode strings as binary; go strings are not necessarily unicode
	EncodePrefix(buf, Binary, key)
	putUint32(buf, uint32(len(val)))
	buf.WriteByte(0)
	buf.WriteString(val)
}

// EncodeBool encodes a bool.
func EncodeBool(buf *bytes2.ChunkedWriter, key string, val bool) {
	EncodePrefix(buf, Boolean, key)
	if val {
		buf.WriteByte(1)
	} else {
		buf.WriteByte(0)
	}
}

func putUint64(buf *bytes2.ChunkedWriter, val uint64) {
	Pack.PutUint64(buf.Reserve(WORD64), val)
}

func putUint32(buf *bytes2.ChunkedWriter, val uint32) {
	Pack.PutUint32(buf.Reserve(WORD32), val)
}

// NewLenWriter returns a LenWriter that reserves the
// bytes buf so they can store the length later.
func NewLenWriter(buf *bytes2.ChunkedWriter) LenWriter {
	off := buf.Len()
	b := buf.Reserve(WORD32)
	return LenWriter{buf, off, b}
}

// EncodeBinary encodes a []byte as binary.
func EncodeBinary(buf *bytes2.ChunkedWriter, key string, val []byte) {
	EncodePrefix(buf, Binary, key)
	putUint32(buf, uint32(len(val)))
	buf.WriteByte(0)
	buf.Write(val)
}

// EncodePrefix encodes key as prefix for the next object or value.
func EncodePrefix(buf *bytes2.ChunkedWriter, etype byte, key string) {
	b := buf.Reserve(len(key) + 2)
	b[0] = etype
	copy(b[1:], key)
	b[len(b)-1] = 0
}