From fbd397a5fb6b30dd4c0e4489b09fae4c3467ab78 Mon Sep 17 00:00:00 2001
From: "J.F.J. Laros" <j.f.j.laros@lumc.nl>
Date: Wed, 1 Feb 2012 13:07:59 +0000
Subject: [PATCH] Added a new method for rolling a substring.
git-svn-id: https://humgenprojects.lumc.nl/svn/mutalyzer/trunk@475 eb6bd6ab-9ccd-42b9-aceb-e2899b4a52f1
---
mutalyzer/util.py | 18 ++++++++++++++++++
1 file changed, 18 insertions(+)
diff --git a/mutalyzer/util.py b/mutalyzer/util.py
index e340ebe5..237413fb 100644
--- a/mutalyzer/util.py
+++ b/mutalyzer/util.py
@@ -218,6 +218,24 @@ def format_range(first, last):
return '%i_%i' % (first, last)
#format_range
+def roll_(s, start, end) :
+ """
+ Different (and easier) way of finding the variability of a substring.
+ """
+ # TODO: Start counting at 1, testing, etc.
+
+ l = len(s)
+
+ i = 0
+ while end + i + 1 < l and s[start + i] == s[end + i + 1] :
+ i += 1
+
+ j = 0
+ while start - j and s[start - j - 1] == s[end - j] :
+ j += 1
+
+ return j, i
+#roll
def roll(s, first, last):
"""
--
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