Use libtar instead of tar.exe (closes #1)

.gitignore

@@ -28,5 +28,3 @@ lib/
 
 # Application bundle for Mac OS
 *.app/
-
-!tar.exe

downloader.pas

@@ -1,6 +1,6 @@
 program downloader;
 
-uses fphttpclient, base64, opensslsockets, fpjson, jsonparser, SysUtils, process, Classes;
+uses fphttpclient, base64, opensslsockets, fpjson, jsonparser, SysUtils, process, Classes, libtar;
 
 const
   authString = '***REMOVED***';
@@ -50,11 +50,17 @@ end;
 
 procedure extractTar(fileName: String);
 var
-  s: AnsiString;
+  tarFile: TTarArchive;
+  tarContent: TTarDirRec;
 
 begin
   writeln('start extract tar');
-  RunCommand('tar.exe', ['-xf', fileName], s);
+  tarFile := TTarArchive.Create(fileName);
+  while tarFile.FindNext(tarContent) do
+  begin
+    tarFile.ReadFile(tarContent.Name);
+  end;
+  tarFile.Destroy;
 end;
 
 procedure copyFile(oldFile, newFile: AnsiString);
@@ -122,6 +128,7 @@ begin
       tarFile := downloadGameTar(client, gameId);
       extractTar(tarFile);
       proccessHashFiles;
+      DeleteFile(tarFile);
     end
     else
     begin
@@ -132,5 +139,6 @@ begin
   begin
     WriteLn('No game id was given');
   end;
+  readln;
 end.