extract cover from cbr,cbz

oml/media/cbr.py

@@ -2,11 +2,23 @@
 
 
 import os
-
+import ox
 
 def cover(path):
     data = None
     #open rar file and extract first page here
+    try:
+        from unrar import rarfile
+        rar = rarfile.RarFile(path)
+        for cover in ox.sorted_strings(rar.namelist()):
+            try:
+                data = rar.read(cover)
+            except:
+                data = None
+            finally:
+                return data
+    except:
+        data = None
     return data
 
 def info(path):