some small fixes

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

@@ -0,0 +1,98 @@
+#!/usr/bin/env python
+#-*- coding:utf-8 -*-
+
+import os
+import sys
+import string
+
+
+class MkdirError(Exception):
+    pass
+
+
+def load_file(filename):
+    if filename == "-":
+        return sys.stdin.read()
+    fd = open(filename, "rb")
+    contents = fd.read()
+    fd.close()
+    return contents
+
+
+def save_file(filename, data):
+    fd = open(filename, "wb")
+    fd.write(data)
+    fd.close()
+    return
+
+
+def mkdir(dirname):
+    if os.path.exists(dirname):
+        return
+    try:
+        os.mkdir(dirname)
+    except BaseException as err:
+        raise MkdirError(str(err))
+    return
+
+
+def rmdir(dirname):
+    if dirname[-1] == os.sep:
+        dirname = dirname[:-1]
+    if os.path.islink(dirname):
+        return  # do not clear link - we can get out of dir
+    files = os.listdir(dirname)
+    for f in files:
+        if f == '.' or f == '..':
+            continue
+        path = dirname + os.sep + f
+        if os.path.isdir(path):
+            rmdir(path)
+        else:
+            os.unlink(path)
+    os.rmdir(dirname)
+    return
+
+
+def decode_from_hex(text):
+    only_hex_digits = "".join([c for c in text if c in string.hexdigits])
+    return only_hex_digits.decode("hex")
+
+
+def parse_char(ch):
+    """
+    'A' or '\x41' or '41'
+    """
+    if len(ch) == 1:
+        return ord(ch)
+    if ch[0:2] == "\\x":
+        ch = ch[2:]
+    if not ch:
+        raise ValueError("Empty char")
+    return ord(chr(int(ch, 16)))
+
+
+def dexor(text, key):
+    ret = list(text)
+    mod = len(key)
+    for index, char in enumerate(ret):
+        ret[index] = chr(ord(char) ^ ord(key[index % mod]))
+    return "".join(ret)
+
+
+def die(exitMessage, exitCode=1):
+    print exitMessage
+    sys.exit(exitCode)
+
+
+def is_linux():
+    return sys.platform.startswith("linux")
+
+
+def alphanum(s):
+    lst = list(s)
+    for index, char in enumerate(lst):
+        if char in (string.letters + string.digits):
+            continue
+        lst[index] = char.encode("hex")
+    return "".join(lst)