Merge attribute handling from request and response to commen code.

packages/ipp/boolean.go

@@ -0,0 +1,59 @@
+package ipp
+
+import (
+	"bytes"
+	"encoding/binary"
+	"fmt"
+	"io"
+
+	log "github.com/sirupsen/logrus"
+)
+
+type boolean struct {
+	name  string
+	value bool
+}
+
+func NewBoolean(name string, value bool) *boolean {
+	b := new(boolean)
+	b.name = name
+	b.value = value
+	return b
+}
+
+func (b boolean) Name() string {
+	return b.name
+}
+
+func (b boolean) String() string {
+	return b.name + ":" + fmt.Sprint(b.value)
+}
+
+func (b *boolean) valueTag() tag {
+	return booleanValueTag
+}
+
+func (b *boolean) unmarshal(byteStream io.Reader) {
+	log.Warn("Unmarshal of boolean is not implemented yet")
+}
+
+func (e *boolean) marshal() []byte {
+	l := 5 + len(e.name)
+	b := make([]byte, 0, l)
+	buf := bytes.NewBuffer(b)
+	buf.WriteByte(byte(booleanValueTag))
+	binary.Write(buf, binary.BigEndian, uint16(len(e.name)))
+	buf.WriteString(e.name)
+	binary.Write(buf, binary.BigEndian, uint16(1))
+	if e.value {
+		buf.WriteByte(byte(1))
+	} else {
+		buf.WriteByte(byte(0))
+	}
+	return buf.Bytes()
+}
+
+func (e *boolean) size() int {
+	l := 5 + len(e.name)
+	return l
+}