WIP: Fix keyword handling

packages/ipp/keyword.go

@@ -1,6 +1,8 @@
 package ipp
 
-import "io"
+import (
+	"encoding/binary"
+)
 
 type keyWord struct {
 	name   string
@@ -9,21 +11,61 @@ type keyWord struct {
 
 func newKeyWord() *keyWord {
 	k := new(keyWord)
+	k.values = make([]string, 0)
 	return k
 }
 
-func (k *keyWord) string() string {
-	return "a uriValue"
+func (k keyWord) String() string {
+	r := k.name + " :"
+	for _, v := range k.values {
+		r = r + " " + v
+	}
+	return r
 }
 func (k *keyWord) valueTag() tag {
 	return keyWordValueTag
 }
 
-func (k *keyWord) unmarshal(byteStream io.Reader) {
-
-}
+// func (k *keyWord) unmarshal(byteStream io.Reader) {
+// 	if len(k.values) == 0 {
+// 		var v string
+// 		k.name, v = unmarshalSingleValue(byteStream)
+// 		k.values = append(k.values, v)
+// 	} else {
+// 		var v string
+// 		_, v = unmarshalSingleValue(byteStream)
+// 		k.values = append(k.values, v)
+// 	}
+// }
 
 func (k *keyWord) marshal() []byte {
+	l := 5 + len(k.name) + len(k.values[0])
+	for i := range k.values[1:] {
+		l += 5 + len(k.values[i+1])
+	}
+	res := make([]byte, 0, l)
+	p := 0
+	res[p] = byte(keyWordValueTag)
+	p += 1
+	binary.BigEndian.PutUint16(res[p:p+2], uint16(len(k.name)))
+	p += 2
+	copy(res[p:], []byte(k.name))
+	p += len(k.name)
+	binary.BigEndian.PutUint16(res[p:p+2], uint16(len(k.values[0])))
+	p += 2
+	copy(res[p:], []byte(k.values[0]))
+	p += len(k.values[0])
+	for i := range k.values[1:] {
+		res[p] = byte(keyWordValueTag)
+		p += 1
+		binary.BigEndian.PutUint16(res[p:p+2], uint16(0))
+		p = p + 2
+		binary.BigEndian.PutUint16(res[p:p+2], uint16(len(k.values[i+1])))
+		p = p + 2
+		copy(res[p:], []byte(k.values[i+1]))
+		p += len(k.values[i+1])
+	}
+
 	return []byte{}
 }
 

packages/ipp/keyword_test.go

@@ -0,0 +1,15 @@
+package ipp
+
+// func TestUnmarshalSimpleKeyword(T *testing.T) {
+// 	testdata := []byte{
+// 		0x00, 0x14,
+// 		0x72, 0x65, 0x71, 0x75, 0x65, 0x73, 0x74, 0x65, 0x64, 0x2d, 0x61, 0x74, 0x74, 0x72, 0x69, 0x62, 0x75, 0x74, 0x65, 0x73,
+// 		0x00, 0x16,
+// 		0x70, 0x72, 0x69, 0x6e, 0x74, 0x65, 0x72, 0x2d, 0x6d, 0x61, 0x6b, 0x65, 0x2d, 0x61, 0x6e, 0x64, 0x2d, 0x6d, 0x6f, 0x64, 0x65, 0x6c,
+// 	}
+// 	buf := bytes.NewBuffer(testdata)
+// 	var k keyWord
+// 	k.unmarshal(buf)
+// 	assert.Equal(T, k.name, "requested-attributes")
+// 	assert.Equal(T, k.values[0], "printer-make-and-model")
+// }