From 5f660bfa96ab0b415d411a559791bcf61f1ea3c2 Mon Sep 17 00:00:00 2001
From: Sven Slootweg <jamsoftgamedev@gmail.com>
Date: Thu, 5 Jun 2014 00:44:03 +0200
Subject: [PATCH] Remove likely unnecessary variable-width whitespace matching
 during preprocessing, to avoid an insane permutation count for partially
 matching regexes, thereby hanging the parser. Fixes #18.

---
 pythonwhois/parse.py | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/pythonwhois/parse.py b/pythonwhois/parse.py
index 2f6845b..3bd4770 100644
--- a/pythonwhois/parse.py
+++ b/pythonwhois/parse.py
@@ -490,7 +490,12 @@ def remove_suffixes(data):
 	return cleaned_list
 
 def preprocess_regex(regex):
-	return re.sub(r"\\s\*\(\?P<([^>]+)>\.\+\)", r"\s*(?P<\1>\S.*)", regex)
+	# Fix for #2; prevents a ridiculous amount of varying size permutations.
+	regex = re.sub(r"\\s\*\(\?P<([^>]+)>\.\+\)", r"\s*(?P<\1>\S.*)", regex)
+	# Experimental fix for #18; removes unnecessary variable-size whitespace
+	# matching, since we're stripping results anyway.
+	regex = re.sub(r"\[ \]\*\(\?P<([^>]+)>\.\*\)", r"(?P<\1>.*)", regex)
+	return regex
 
 def parse_registrants(data):
 	registrant = None