include padding size in torrent stats (#225)

* include padding size in torrent stats

* include padding size in RPC response

Author: berkanteber

internal/metainfo/info.go

@@ -29,6 +29,7 @@ type Info struct {
 	Name        string
 	Hash        [20]byte
 	Length      int64
+	Padding     int64
 	NumPieces   uint32
 	Bytes       []byte
 	Private     bool
@@ -122,6 +123,9 @@ func NewInfo(b []byte, utf8 bool, pad bool) (*Info, error) {
 	if multiFile {
 		for _, f := range ib.Files {
 			i.Length += f.Length
+			if f.isPadding() {
+				i.Padding += f.Length
+			}
 		}
 	} else {
 		i.Length = ib.Length

internal/rpctypes/rpctypes.go

@@ -114,6 +114,7 @@ type Stats struct {
 	}
 	Bytes struct {
 		Total      int64
+		Padding    int64
 		Allocated  int64
 		Completed  int64
 		Incomplete int64

torrent/session_rpc_handler.go

@@ -184,6 +184,7 @@ func (h *rpcHandler) GetTorrentStats(args *rpctypes.GetTorrentStatsRequest, repl
 		},
 		Bytes: struct {
 			Total      int64
+			Padding    int64
 			Allocated  int64
 			Completed  int64
 			Incomplete int64
@@ -192,6 +193,7 @@ func (h *rpcHandler) GetTorrentStats(args *rpctypes.GetTorrentStatsRequest, repl
 			Wasted     int64
 		}{
 			Total:      s.Bytes.Total,
+			Padding:    s.Bytes.Padding,
 			Allocated:  s.Bytes.Allocated,
 			Completed:  s.Bytes.Completed,
 			Incomplete: s.Bytes.Incomplete,

torrent/torrent_stats.go

@@ -39,6 +39,8 @@ type Stats struct {
 		Incomplete int64
 		// The number of total bytes of files in torrent.  Total = Completed + Incomplete
 		Total int64
+		// The number of total bytes of padding files in torrent.  Disk Size = Total - Padding
+		Padding int64
 		// Downloaded is the number of bytes downloaded from swarm.
 		// Because some pieces may be downloaded more than once, this number may be greater than completed bytes.
 		Downloaded int64
@@ -151,6 +153,7 @@ func (t *torrent) stats() Stats {
 
 	if t.info != nil {
 		s.Bytes.Total = t.info.Length
+		s.Bytes.Padding = t.info.Padding
 		s.Bytes.Completed = t.bytesComplete()
 		s.Bytes.Incomplete = s.Bytes.Total - s.Bytes.Completed