1 files changed, 32 insertions, 0 deletions
diff --git a/app/utils/special_char_converter.py b/app/utils/special_char_converter.py
new file mode 100644
index 0000000..fb469bb
--- /dev/null
+++ b/app/utils/special_char_converter.py
@@ -0,0 +1,32 @@
+###############################################################################
+# Copyright (c) 2017 Koren Lev (Cisco Systems), Yaron Yogev (Cisco Systems)   #
+# and others                                                                  #
+#                                                                             #
+# All rights reserved. This program and the accompanying materials            #
+# are made available under the terms of the Apache License, Version 2.0       #
+# which accompanies this distribution, and is available at                    #
+# http://www.apache.org/licenses/LICENSE-2.0                                  #
+###############################################################################
+import re
+
+
+class SpecialCharConverter:
+
+    translated_re = re.compile(r'---[.][.][0-9]+[.][.]---')
+
+    def encode_special_characters(self, s):
+        SPECIAL_CHARS = [':', '/']
+        for c in SPECIAL_CHARS:
+            if c in s:
+                s = s.replace(c, '---..' + str(ord(c)) + '..---')
+        return s
+
+    def decode_special_characters(self, s):
+        replaced = []
+        for m in re.finditer(self.translated_re, s):
+            match = m.group(0)
+            char_code = match[5:len(match)-5]
+            if char_code not in replaced:
+                replaced.append(char_code)
+                s = s.replace(match, chr(int(char_code)))
+        return s