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/* stringlessignorecase.cpp
* Copyright (C) 2006 Tommi Maekitalo
*
* 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 2 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* is provided AS IS, WITHOUT ANY WARRANTY; without even the implied
* warranty of MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, and
* NON-INFRINGEMENT. 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, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#include <tnt/stringlessignorecase.h>
#include <cctype>
namespace tnt
{
bool StringLessIgnoreCase::operator()(const std::string& s1, const std::string& s2) const
{
std::string::const_iterator it1 = s1.begin();
std::string::const_iterator it2 = s2.begin();
while (it1 != s1.end() && it2 != s2.end())
{
char c1 = std::toupper(*it1);
char c2 = std::toupper(*it2);
if (c1 < c2)
return true;
else if (c2 < c1)
return false;
++it1;
++it2;
}
return it1 == s1.end() ? (it2 != s2.end()) : (it2 == s2.end());
}
}
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