"bytes"
"crypto/rand"
"encoding/binary"
+ "io"
+ "slices"
"sort"
)
+const defaultNewsDateFormat = "Jan02 15:04" // Jun23 20:49
+
+const defaultNewsTemplate = `From %s (%s):
+
+%s
+
+__________________________________________________________`
+
type ThreadedNews struct {
Categories map[string]NewsCategoryListData15 `yaml:"Categories"`
}
type NewsCategoryListData15 struct {
- Type []byte `yaml:"Type"` //Size 2 ; Bundle (2) or category (3)
- Count []byte // Article or SubCategory count Size 2
+ Type [2]byte `yaml:"Type"` // Size 2 ; Bundle (2) or category (3)
+ Count []byte // Article or SubCategory count Size 2
NameSize byte
Name string `yaml:"Name"` //
Articles map[uint32]*NewsArtData `yaml:"Articles"` // Optional, if Type is Category
var newsArtsPayload []byte
for i, art := range newscat.Articles {
- ID := make([]byte, 4)
- binary.BigEndian.PutUint32(ID, i)
+ id := make([]byte, 4)
+ binary.BigEndian.PutUint32(id, i)
newArt := NewsArtList{
- ID: ID,
+ ID: id,
TimeStamp: art.Date,
ParentID: art.ParentArt,
Flags: []byte{0, 0, 0, 0},
}
nald := NewsArtListData{
- ID: []byte{0, 0, 0, 0},
+ ID: [4]byte{0, 0, 0, 0},
+ Count: len(newsArts),
Name: []byte{},
Description: []byte{},
NewsArtList: newsArtsPayload,
type NewsArtData struct {
Title string `yaml:"Title"`
Poster string `yaml:"Poster"`
- Date []byte `yaml:"Date"` //size 8
- PrevArt []byte `yaml:"PrevArt"` //size 4
- NextArt []byte `yaml:"NextArt"` //size 4
- ParentArt []byte `yaml:"ParentArt"` //size 4
- FirstChildArt []byte `yaml:"FirstChildArtArt"` //size 4
+ Date []byte `yaml:"Date"` // size 8
+ PrevArt []byte `yaml:"PrevArt"` // size 4
+ NextArt []byte `yaml:"NextArt"` // size 4
+ ParentArt []byte `yaml:"ParentArt"` // size 4
+ FirstChildArt []byte `yaml:"FirstChildArtArt"` // size 4
DataFlav []byte `yaml:"DataFlav"` // "text/plain"
Data string `yaml:"Data"`
}
}
type NewsArtListData struct {
- ID []byte `yaml:"ID"` // Size 4
- Name []byte `yaml:"Name"`
- Description []byte `yaml:"Description"` // not used?
- NewsArtList []byte // List of articles Optional (if article count > 0)
+ ID [4]byte `yaml:"ID"` // Size 4
+ Name []byte `yaml:"Name"`
+ Description []byte `yaml:"Description"` // not used?
+ NewsArtList []byte // List of articles Optional (if article count > 0)
+ Count int
}
-func (nald *NewsArtListData) Payload() []byte {
+func (nald *NewsArtListData) Read(p []byte) (int, error) {
count := make([]byte, 4)
- binary.BigEndian.PutUint32(count, uint32(len(nald.NewsArtList)))
-
- out := append(nald.ID, count...)
- out = append(out, []byte{uint8(len(nald.Name))}...)
- out = append(out, nald.Name...)
- out = append(out, []byte{uint8(len(nald.Description))}...)
- out = append(out, nald.Description...)
- out = append(out, nald.NewsArtList...)
-
- return out
+ binary.BigEndian.PutUint32(count, uint32(nald.Count))
+
+ return copy(
+ p,
+ slices.Concat(
+ nald.ID[:],
+ count,
+ []byte{uint8(len(nald.Name))},
+ nald.Name,
+ []byte{uint8(len(nald.Description))},
+ nald.Description,
+ nald.NewsArtList,
+ ),
+ ),
+ io.EOF
}
// NewsArtList is a summarized version of a NewArtData record for display in list view
count := make([]byte, 2)
binary.BigEndian.PutUint16(count, uint16(len(newscat.Articles)+len(newscat.SubCats)))
- out := append(newscat.Type, count...)
+ out := append(newscat.Type[:], count...)
- if bytes.Equal(newscat.Type, []byte{0, 3}) {
+ if bytes.Equal(newscat.Type[:], []byte{0, 3}) {
// Generate a random GUID // TODO: does this need to be random?
b := make([]byte, 16)
_, err := rand.Read(b)
return out, err
}
-// ReadNewsCategoryListData parses a byte slice into a NewsCategoryListData15 struct
-// For use on the client side
-func ReadNewsCategoryListData(payload []byte) NewsCategoryListData15 {
- ncld := NewsCategoryListData15{
- Type: payload[0:2],
- Count: payload[2:4],
- }
-
- if bytes.Equal(ncld.Type, []byte{0, 3}) {
- ncld.GUID = payload[4:20]
- ncld.AddSN = payload[20:24]
- ncld.AddSN = payload[24:28]
- ncld.Name = string(payload[29:])
- } else {
- ncld.Name = string(payload[5:])
- }
-
- return ncld
-}
-
func (newscat *NewsCategoryListData15) nameLen() []byte {
return []byte{uint8(len(newscat.Name))}
}
-//type NewsPath struct {
-// Paths []string
-//}
-//
-//func (np *NewsPath) Payload() []byte {
-// var out []byte
-//
-// count := make([]byte, 2)
-// binary.BigEndian.PutUint16(count, uint16(len(np.Paths)))
-//
-// out = append(out, count...)
-// for _, p := range np.Paths {
-// pLen := byte(len(p))
-// out = append(out, []byte{0, 0}...) // what is this?
-// out = append(out, pLen)
-// out = append(out, []byte(p)...)
-// }
-//
-// return out
-//}
-
+// TODO: re-implement as bufio.Scanner interface
func ReadNewsPath(newsPath []byte) []string {
if len(newsPath) == 0 {
return []string{}