Update README.md

[rbdr/mobius] / hotline / news.go

diff --git a/hotline/news.go b/hotline/news.go
index cd3b6af5d6a5b46d6c5bcd33323f461c19dcbe43..6e89388028a8d034ce1ed36102d2bb674bd25071 100644 (file)
--- a/hotline/news.go
+++ b/hotline/news.go
@@ -1,7 +1,6 @@
 package hotline
 
 import (
-       "bytes"
        "encoding/binary"
        "io"
        "slices"
@@ -29,6 +28,8 @@ type NewsCategoryListData15 struct {
        GUID     [16]byte                          `yaml:"-"` // What does this do?  Undocumented and seeming unused.
        AddSN    [4]byte                           `yaml:"-"` // What does this do?  Undocumented and seeming unused.
        DeleteSN [4]byte                           `yaml:"-"` // What does this do?  Undocumented and seeming unused.
+
+       readOffset int // Internal offset to track read progress
 }
 
 func (newscat *NewsCategoryListData15) GetNewsArtListData() NewsArtListData {
@@ -165,7 +166,7 @@ func (nal *NewsArtList) Read(p []byte) (int, error) {
                nal.TimeStamp[:],
                nal.ParentID[:],
                nal.Flags[:],
-               []byte{0, 1}, // Flavor Count
+               []byte{0, 1}, // Flavor Count TODO: make this not hardcoded
                []byte{uint8(len(nal.Title))},
                nal.Title,
                []byte{uint8(len(nal.Poster))},
@@ -191,23 +192,33 @@ type NewsFlavorList struct {
        // Article size 2
 }
 
-func (newscat *NewsCategoryListData15) MarshalBinary() (data []byte, err error) {
+func (newscat *NewsCategoryListData15) Read(p []byte) (int, error) {
        count := make([]byte, 2)
        binary.BigEndian.PutUint16(count, uint16(len(newscat.Articles)+len(newscat.SubCats)))
 
-       out := append(newscat.Type[:], count...)
+       out := slices.Concat(
+               newscat.Type[:],
+               count,
+       )
 
        // If type is category
-       if bytes.Equal(newscat.Type[:], []byte{0, 3}) {
-               out = append(out, newscat.GUID[:]...)     // GUID
-               out = append(out, newscat.AddSN[:]...)    // Add SN
-               out = append(out, newscat.DeleteSN[:]...) // Delete SN
+       if newscat.Type == [2]byte{0, 3} {
+               out = append(out, newscat.GUID[:]...)
+               out = append(out, newscat.AddSN[:]...)
+               out = append(out, newscat.DeleteSN[:]...)
        }
 
        out = append(out, newscat.nameLen()...)
        out = append(out, []byte(newscat.Name)...)
 
-       return out, err
+       if newscat.readOffset >= len(out) {
+               return 0, io.EOF // All bytes have been read
+       }
+
+       n := copy(p, out)
+       newscat.readOffset = n
+
+       return n, nil
 }
 
 func (newscat *NewsCategoryListData15) nameLen() []byte {