X-Git-Url: https://git.r.bdr.sh/rbdr/mobius/blobdiff_plain/72dd37f1abb2b550aaaac48eac677403d5664797..3e20402491f013710dfa1c2f3d0cd6ab0e212585:/hotline/file_name_with_info.go

diff --git a/hotline/file_name_with_info.go b/hotline/file_name_with_info.go
index d9add8c..3324a62 100644
--- a/hotline/file_name_with_info.go
+++ b/hotline/file_name_with_info.go
@@ -3,50 +3,60 @@ package hotline
 import (
 	"bytes"
 	"encoding/binary"
+	"io"
+	"slices"
 )
 
 type FileNameWithInfo struct {
 	fileNameWithInfoHeader
-	name []byte // File name
+	Name []byte // File Name
+
+	readOffset int // Internal offset to track read progress
 }
 
 // fileNameWithInfoHeader contains the fixed length fields of FileNameWithInfo
 type fileNameWithInfoHeader struct {
-	Type       [4]byte // file type code
+	Type       [4]byte // File type code
 	Creator    [4]byte // File creator code
 	FileSize   [4]byte // File Size in bytes
 	RSVD       [4]byte
 	NameScript [2]byte // ??
-	NameSize   [2]byte // Length of name field
+	NameSize   [2]byte // Length of Name field
 }
 
 func (f *fileNameWithInfoHeader) nameLen() int {
 	return int(binary.BigEndian.Uint16(f.NameSize[:]))
 }
 
-func (f *FileNameWithInfo) MarshalBinary() (data []byte, err error) {
-	var buf bytes.Buffer
-	err = binary.Write(&buf, binary.LittleEndian, f.fileNameWithInfoHeader)
-	if err != nil {
-		return data, err
+// Read implements io.Reader for FileNameWithInfo
+func (f *FileNameWithInfo) Read(p []byte) (int, error) {
+	buf := slices.Concat(
+		f.Type[:],
+		f.Creator[:],
+		f.FileSize[:],
+		f.RSVD[:],
+		f.NameScript[:],
+		f.NameSize[:],
+		f.Name,
+	)
+
+	if f.readOffset >= len(buf) {
+		return 0, io.EOF // All bytes have been read
 	}
 
-	_, err = buf.Write(f.name)
-	if err != nil {
-		return data, err
-	}
+	n := copy(p, buf[f.readOffset:])
+	f.readOffset += n
 
-	return buf.Bytes(), err
+	return n, nil
 }
 
-func (f *FileNameWithInfo) UnmarshalBinary(data []byte) error {
-	err := binary.Read(bytes.NewReader(data), binary.BigEndian, &f.fileNameWithInfoHeader)
+func (f *FileNameWithInfo) Write(p []byte) (int, error) {
+	err := binary.Read(bytes.NewReader(p), binary.BigEndian, &f.fileNameWithInfoHeader)
 	if err != nil {
-		return err
+		return 0, err
 	}
 	headerLen := binary.Size(f.fileNameWithInfoHeader)
-	f.name = data[headerLen : headerLen+f.nameLen()]
+	f.Name = p[headerLen : headerLen+f.nameLen()]
 
-	return err
+	return len(p), nil
 }
-