pazdera · August 2, 2011 21:47 · Aug 14, 2011 · Aug 2, 2011
diff --git a/gistfile1.py b/gistfile1.py
@@ -33,11 +33,11 @@ def indexToCharacter(index):
 def next(string):
     """ Get next sequence of characters.
 
-    It treat characters as numbers (0-255). It tries to increment
+    Treats characters as numbers (0-255). Function tries to increment
     character at the first position. If it fails, new character is
     added to the back of the list.
 
-    It's basicaly a number with base = 256.
+    It's basically a number with base = 256.
 
     :param string: A list of characters (can be empty).
     :type string: list

diff --git a/gistfile1.py b/gistfile1.py
@@ -0,0 +1,63 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+# Brute-force string generation
+# Copyright (C) 2011 Radek Pazdera
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+import string
+ALLOWED_CHARACTERS = string.printable
+NUMBER_OF_CHARACTERS = len(ALLOWED_CHARACTERS)
+
+def characterToIndex(char):
+    return ALLOWED_CHARACTERS.index(char)
+
+def indexToCharacter(index):
+    if NUMBER_OF_CHARACTERS <= index:
+        raise ValueError("Index out of range.")
+    else:
+        return ALLOWED_CHARACTERS[index]
+
+def next(string):
+    """ Get next sequence of characters.
+
+    It treat characters as numbers (0-255). It tries to increment
+    character at the first position. If it fails, new character is
+    added to the back of the list.
+
+    It's basicaly a number with base = 256.
+
+    :param string: A list of characters (can be empty).
+    :type string: list
+    :return: Next list of characters in the sequence
+    :rettype: list
+    """
+    if len(string) <= 0:
+        string.append(indexToCharacter(0))
+    else:
+        string[0] = indexToCharacter((characterToIndex(string[0]) + 1) % NUMBER_OF_CHARACTERS)
+        if characterToIndex(string[0]) is 0:
+            return list(string[0]) + next(string[1:])
+    return string
+
+def main():
+    sequence = list()
+    while True:
+        sequence = next(sequence)
+        print sequence
+
+if __name__ == "__main__":
+    main()
+
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