add decode functions for info and data packets

internal/decoders/info_tracker_list_chunk.go

@@ -0,0 +1,40 @@
+package decoders
+
+type InfoTrackerListChunkData struct {
+	Trackers []InfoTrackerChunk
+}
+
+func decodeInfoTrackerListChunkData(infoTrackerListChunk Chunk) InfoTrackerListChunkData {
+	var trackers []InfoTrackerChunk
+	if infoTrackerListChunk.Header.HasSubchunks && infoTrackerListChunk.Header.DataLen > 0 {
+		offset := 0
+		for offset < int(infoTrackerListChunk.Header.DataLen) {
+			trackerChunk := DecodeInfoTrackerChunk(infoTrackerListChunk.ChunkData[offset:])
+			offset += CHUNK_HEADER_SIZE
+			if trackerChunk.Chunk.Header.DataLen > 0 {
+				offset += int(trackerChunk.Chunk.Header.DataLen)
+			}
+			trackers = append(trackers, trackerChunk)
+		}
+	}
+
+	return InfoTrackerListChunkData{
+		Trackers: trackers,
+	}
+}
+
+type InfoTrackerListChunk struct {
+	Chunk Chunk
+	Data  InfoTrackerListChunkData
+}
+
+func DecodeInfoTrackerListChunk(bytes []byte) InfoTrackerListChunk {
+	chunk := DecodeChunk(bytes)
+	data := decodeInfoTrackerListChunkData(chunk)
+
+	return InfoTrackerListChunk{
+		Chunk: chunk,
+		Data:  data,
+	}
+
+}