Issue GerryFerdinandus#15 Should give the user a warning when torrent file update failed.

If one of the torrent file write failed the variable SomeFilesAreReadOnly will be set.
At the end of the files update cycle a warning text will be added if the variable SomeFilesAreReadOnly is set.

Author: GerryFerdinandus

source/code/decodetorrent.pas

@@ -543,15 +543,14 @@ function TDecodeTorrent.SaveTorrent(const Filename: utf8string): boolean;
   str: utf8string;
   S: TFileStreamUTF8;
 begin
-  Result := True;
   try
     //Encode it to string format
     str := '';
     TBEncoded.Encode(FBEncoded, str);
     //Write string to file. Support filename with unicode.
     S := TFileStreamUTF8.Create(FileName, fmCreate);
     try
-      s.Write(Str[1], length(Str));
+      Result := s.Write(Str[1], length(Str)) = length(Str);
     finally
       S.Free;
     end;

source/code/main.pas

@@ -473,7 +473,7 @@ procedure TFormTrackerModify.UpdateTorrent;
 var
   Reply, BoxStyle, i, CountTrackers: integer;
   PopUpMenuStr: string;
-  SomeFilesAreReadOnly: Boolean;
+  SomeFilesCannotBeWriten, SomeFilesAreReadOnly: boolean;
 
 begin
   //Update all the torrent files.
@@ -483,6 +483,9 @@ procedure TFormTrackerModify.UpdateTorrent;
   //Undo all posible sort column used by the user. Sort it back to 'begin state'
   FControlerGridTorrentData.ReorderGrid;
 
+  //initial value is false, will be set to true if some file fails to write
+  SomeFilesCannotBeWriten := False;
+
   try
 
     if not FConcoleMode then
@@ -615,8 +618,12 @@ procedure TFormTrackerModify.UpdateTorrent;
       FDecodePresentTorrent.Comment := FControlerGridTorrentData.ReadComment(i + 1);
 
       //save the torrent file.
-      FDecodePresentTorrent.SaveTorrent(FTorrentFileNameList[i]);
-    end;
+      if not FDecodePresentTorrent.SaveTorrent(FTorrentFileNameList[i]) then
+      begin
+        SomeFilesCannotBeWriten := True;
+      end;
+
+    end;//for
 
     //Create tracker.txt file
     SaveTrackerFinalListToFile;
@@ -670,7 +677,15 @@ procedure TFormTrackerModify.UpdateTorrent;
     if SomeFilesAreReadOnly then
     begin
       //add warning if read only files are detected.
-      PopUpMenuStr := PopUpMenuStr + ' Warning: Some torrent files are not updated bacause they are READ-ONLY files.';
+      PopUpMenuStr := PopUpMenuStr +
+        ' WARNING: Some torrent files are not updated bacause they are READ-ONLY files.';
+    end;
+
+    if SomeFilesCannotBeWriten then
+    begin
+      //add warning if some files writen are failed. Someting is wrong with the disk.
+      PopUpMenuStr := PopUpMenuStr +
+        ' WARNING: Some torrent files are not updated bacause they failed at write.';
     end;
 
     //Show the MessageBox