unicode/string.c

   1 /*
   2  * Unicode string manipulation functions
   3  *
   4  * Copyright 2000 Alexandre Julliard
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #include "wine/unicode.h"
  22
  23 int strcmpiW( const WCHAR *str1, const WCHAR *str2 )
  24 {
  25     for (;;)
  26     {
  27         int ret = toupperW(*str1) - toupperW(*str2);
  28         if (ret || !*str1) return ret;
  29         str1++;
  30         str2++;
  31     }
  32 }
  33
  34 int strncmpiW( const WCHAR *str1, const WCHAR *str2, int n )
  35 {
  36     int ret = 0;
  37     for ( ; n > 0; n--, str1++, str2++)
  38         if ((ret = toupperW(*str1) - toupperW(*str2)) || !*str1) break;
  39     return ret;
  40 }
  41
  42 WCHAR *strstrW( const WCHAR *str, const WCHAR *sub )
  43 {
  44     while (*str)
  45     {
  46         const WCHAR *p1 = str, *p2 = sub;
  47         while (*p1 && *p2 && *p1 == *p2) { p1++; p2++; }
  48         if (!*p2) return (WCHAR *)str;
  49         str++;
  50     }
  51     return NULL;
  52 }