some small fixes

Cryptography/tools/xortool-master/xortool/args.py

@@ -0,0 +1,28 @@
+#!/usr/bin/env python
+#-*- coding:utf-8 -*-
+
+from docopt import docopt
+
+from routine import parse_char
+
+
+class ArgError(Exception):
+    pass
+
+
+def parse_parameters(doc, version):
+    p = docopt(doc, version=version)
+    p = {k.lstrip("-"): v for k, v in p.items()}
+    try:
+        return {
+            "input_is_hex": bool(p["hex"]),
+            "max_key_length": int(p["max-keylen"]),
+            "known_key_length": int(p["key-length"]) if p["key-length"] else None,
+            "most_frequent_char": parse_char(p["char"]) if p["char"] else None,
+            "brute_chars": bool(p["brute-chars"]),
+            "brute_printable": bool(p["brute-printable"]),
+            "frequency_spread": 0,  # to be removed
+            "filename": p["FILE"] if p["FILE"] else "-",  # stdin by default
+        }
+    except ValueError as err:
+        raise ArgError(str(err))