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tdepim/libemailfunctions/kasciistricmp.cpp

48 lines
1.4 KiB

/* This file is part of the KDE libraries
Copyright (C) 2004 David Faure <faure@kde.org>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License version 2 as published by the Free Software Foundation.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#include "kasciistricmp.h"
#if ! KDE_IS_VERSION(3,3,89)
static unsigned char tdepim_ASCIIToLower( unsigned char ch )
{
if ( ch >= 'A' && ch <= 'Z' )
return ch - 'A' + 'a';
else
return ch;
}
int tdepim_kasciistricmp( const char *str1, const char *str2 )
{
const unsigned char *s1 = (const unsigned char *) str1;
const unsigned char *s2 = (const unsigned char *) str2;
int res;
unsigned char c;
if ( !s1 || !s2 )
return s1 ? 1 : ( s2 ? -1 : 0 );
for ( ; !( res = ( c = tdepim_ASCIIToLower( *s1 ) ) - tdepim_ASCIIToLower( *s2 ) );
++s1, ++s2 )
if ( !c ) // strings are equal
break;
return res;
}
#endif