Fix uncaught exception on empty files

Author: DimitriPapadopoulos

codespell_lib/_codespell.py

@@ -200,30 +200,26 @@ def open_with_chardet(self, filename):
         return lines, encoding
 
     def open_with_internal(self, filename):
-        curr = 0
-        while True:
+        first_try = True
+        for encoding in encodings:
+            if first_try:
+                first_try = False
+            else:
+                print("WARNING: Trying next encoding %s"
+                      % encoding, file=sys.stderr)
             try:
-                f = codecs.open(filename, 'r', encoding=encodings[curr])
+                f = codecs.open(filename, 'r', encoding=encoding)
             except UnicodeDecodeError:
                 if not self.quiet_level & QuietLevels.ENCODING:
                     print("WARNING: Decoding file using encoding=%s failed: %s"
-                          % (encodings[curr], filename,), file=sys.stderr)
-                    try:
-                        print("WARNING: Trying next encoding %s"
-                              % encodings[curr + 1], file=sys.stderr)
-                    except IndexError:
-                        pass
-
-                curr += 1
+                          % (encoding, filename,), file=sys.stderr)
             else:
                 lines = f.readlines()
                 f.close()
                 break
-        if not lines:
+        else:
             raise Exception('Unknown encoding')
 
-        encoding = encodings[curr]
-
         return lines, encoding
 
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