Add tar archive support

tests/test_corrupted_files.py

 #!/usr/bin/env python3
 
 import unittest
+from io import BytesIO
+import time
 import shutil
 import os
 import logging
@@ -297,6 +299,12 @@ class TestCorruptedFiles(unittest.TestCase):
             zout.add('./tests/data/dirty.docx')
             zout.add('./tests/data/dirty.jpg')
             zout.add('./tests/data/embedded_corrupted.docx')
+            tarinfo = tarfile.TarInfo(name='./tests/data/dirty.png')
+            tarinfo.mtime = time.time()
+            tarinfo.uid = 1337
+            tarinfo.gid = 1338
+            with open('./tests/data/dirty.png', 'rb') as f:
+                zout.addfile(tarinfo, f)
         p, mimetype = parser_factory.get_parser('./tests/data/clean.tar')
         self.assertEqual(mimetype, 'application/x-tar')
         meta = p.get_meta()