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lnwire/features: add Encode256 and Decode256

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These will allow us to serialize invoice features bits without double
encoding the length.
This commit is contained in:
Conner Fromknecht 2019-11-22 02:23:35 -08:00
parent 76a2dfd8a6
commit c6a01f02cd
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GPG Key ID: E7D737B67FA592C7
1 changed files with 18 additions and 3 deletions
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21
lnwire/features.go
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@ -216,8 +216,16 @@ func (fv *RawFeatureVector) Encode(w io.Writer) error {
return fv.encode(w, length, 8)
}
// EncodeBase256 writes the feature vector in base256 representation. Every
// feature is encoded as a bit, and the bit vector is serialized using the least
// number of bytes.
func (fv *RawFeatureVector) EncodeBase256(w io.Writer) error {
length := fv.SerializeSize()
return fv.encode(w, length, 8)
}
// EncodeBase32 writes the feature vector in base32 representation. Every feature
// encoded as a bit, and the bit vector is serialized using the least number of
// is encoded as a bit, and the bit vector is serialized using the least number of
// bytes.
func (fv *RawFeatureVector) EncodeBase32(w io.Writer) error {
length := fv.SerializeSize32()
@ -239,8 +247,8 @@ func (fv *RawFeatureVector) encode(w io.Writer, length, width int) error {
}
// Decode reads the feature vector from its byte representation. Every feature
// encoded as a bit, and the bit vector is serialized using the least number of
// bytes. Since the bit vector length is variable, the first two bytes of the
// is encoded as a bit, and the bit vector is serialized using the least number
// of bytes. Since the bit vector length is variable, the first two bytes of the
// serialization represent the length.
func (fv *RawFeatureVector) Decode(r io.Reader) error {
// Read the length of the feature vector.
@ -253,6 +261,13 @@ func (fv *RawFeatureVector) Decode(r io.Reader) error {
return fv.decode(r, int(length), 8)
}
// DecodeBase256 reads the feature vector from its base256 representation. Every
// feature encoded as a bit, and the bit vector is serialized using the least
// number of bytes.
func (fv *RawFeatureVector) DecodeBase256(r io.Reader, length int) error {
return fv.decode(r, length, 8)
}
// DecodeBase32 reads the feature vector from its base32 representation. Every
// feature encoded as a bit, and the bit vector is serialized using the least
// number of bytes.