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87 lines
2.3 KiB
C++
87 lines
2.3 KiB
C++
/* -*- c++ -*-
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Copyright (c) 2005 Ingo Kloecker <kloecker@kde.org>
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public License
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along with this library; see the file COPYING.LIB. If not, write to
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the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA.
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*/
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#include "kascii.h"
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int kasciistricmp( const char *str1, const char *str2 )
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{
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const unsigned char *s1 = (const unsigned char *)str1;
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const unsigned char *s2 = (const unsigned char *)str2;
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int res;
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unsigned char c1, c2;
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if ( !s1 || !s2 )
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return s1 ? 1 : (s2 ? -1 : 0);
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if ( !*s1 || !*s2 )
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return *s1 ? 1 : (*s2 ? -1 : 0);
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for (;*s1; ++s1, ++s2) {
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c1 = *s1; c2 = *s2;
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if (c1 >= 'A' && c1 <= 'Z')
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c1 += 'a' - 'A';
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if (c2 >= 'A' && c2 <= 'Z')
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c2 += 'a' - 'A';
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if ((res = c1 - c2))
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break;
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}
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return *s1 ? res : (*s2 ? -1 : 0);
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}
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/** Convert a single ASCII character to lowercase.
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@param ch Character to convert
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@internal
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*/
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static unsigned char ASCIIToLower( unsigned char ch )
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{
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if ( ch >= 'A' && ch <= 'Z' )
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return ch - 'A' + 'a';
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else
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return ch;
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}
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char * kAsciiToLower( char *s )
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{
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if ( !s )
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return 0;
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for ( unsigned char *p = (unsigned char *) s; *p; ++p )
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*p = ASCIIToLower( *p );
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return s;
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}
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/** Convert a single ASCII character to uppercase.
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@param ch Character to convert
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@internal
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*/
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static unsigned char ASCIIToUpper( unsigned char ch )
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{
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if ( ch >= 'a' && ch <= 'z' )
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return ch - 'a' + 'A';
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else
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return ch;
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}
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char * kAsciiToUpper( char *s )
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{
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if ( !s )
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return 0;
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for ( unsigned char *p = (unsigned char *) s; *p; ++p )
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*p = ASCIIToUpper( *p );
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return s;
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}
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