From: bangerth <bangerth@0785d39b-7218-0410-832d-ea1e28bc413d>
Date: Sun, 20 Jul 2014 19:24:26 +0000 (+0000)
Subject: In string_to_int, strip spaces at the front and back as we used to do.
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;p=dealii-svn.git

In string_to_int, strip spaces at the front and back as we used to do.

git-svn-id: https://svn.dealii.org/trunk@33203 0785d39b-7218-0410-832d-ea1e28bc413d
---

diff --git a/deal.II/source/base/utilities.cc b/deal.II/source/base/utilities.cc
index b014ee6ff7..a09e9dabf1 100644
--- a/deal.II/source/base/utilities.cc
+++ b/deal.II/source/base/utilities.cc
@@ -147,9 +147,17 @@ namespace Utilities
 
 
   int
-  string_to_int (const std::string &s)
+  string_to_int (const std::string &s_)
   {
+    // trim whitespace on either side of the text if necessary
+    std::string s = s_;
+    while ((s.size() > 0) && (s[0] == ' '))
+      s.erase (s.begin());
+    while ((s.size() > 0) && (s[s.size()-1] == ' '))
+      s.erase (s.end()-1);
+
     char *p;
+    errno = 0;
     const int i = std::strtol(s.c_str(), &p, 10);
     AssertThrow ( !((errno != 0) || (s.size() == 0) || ((s.size()>0) && (*p != '\0'))),
                   ExcMessage ("Can't convert <" + s + "> to an integer."));