func (frame *StringLiteral) EncodeHuffman() (buf *swrap.SWrap) {
buf = new(swrap.SWrap)
switch frame.Indexing {
case WITH:
buf.Add(0x40) // 0100 0000
case WITHOUT:
buf.Add(0) // 0000 0000
case NEVER:
buf.Add(0x10) // 0001 0000
}
var encoded, length []byte
// Name With Huffman
encoded = huffman.Encode([]byte(frame.NameString))
length = integer.Encode(uint32(len(encoded)), 7)
length[0] += 0x80 // 1000 0000 (huffman flag)
buf.Merge(length)
buf.Merge(encoded)
// Value With Huffman
encoded = huffman.Encode([]byte(frame.ValueString))
length = integer.Encode(uint32(len(encoded)), 7)
length[0] += 0x80 // 1000 0000 (huffman flag)
buf.Merge(length)
buf.Merge(encoded)
Trace("huffman encoded %s %v", frame, *buf)
return buf
}
func (frame *IndexedLiteral) EncodeHuffman() (buf *swrap.SWrap) {
switch frame.Indexing {
case WITH:
buf = swrap.Make(integer.Encode(frame.Index, 6))
(*buf)[0] += 0x20
case WITHOUT:
buf = swrap.Make(integer.Encode(frame.Index, 4))
case NEVER:
buf = swrap.Make(integer.Encode(frame.Index, 4))
(*buf)[0] += 0x8
}
var encoded, length []byte
// Value With Huffman
encoded = huffman.Encode([]byte(frame.ValueString))
length = integer.Encode(uint32(len(encoded)), 7)
length[0] += 0x80 // 1000 0000 (huffman flag)
buf.Merge(length)
buf.Merge(encoded)
return buf
}