1 /*
2 * Wide character string functions
3 *
4 * Copyright (C) 2010-2021, Joachim Metz <joachim.metz@gmail.com>
5 *
6 * Refer to AUTHORS for acknowledgements.
7 *
8 * This program is free software: you can redistribute it and/or modify
9 * it under the terms of the GNU Lesser General Public License as published by
10 * the Free Software Foundation, either version 3 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU Lesser General Public License
19 * along with this program. If not, see <https://www.gnu.org/licenses/>.
20 */
21
22 #include <common.h>
23 #include <types.h>
24
25 #if defined( HAVE_WCTYPE_H )
26 #include <wctype.h>
27 #endif
28
29 #include "libclocale_wide_string.h"
30
31 #if defined( TOWLOWER ) && !defined( HAVE_WCSNCASECMP ) && !defined( HAVE_WCSCASECMP ) && !defined( WINAPI )
32
33 /* Replacement for missing: wcsncasecmp
34 * Compares no more than a specified number of wide characters of string1 and string2,
35 * ignoring case, returning less than, equal to or greater than zero if string1 is
36 * less than, equal to or greater than string.
37 */
libclocale_wide_string_compare_no_case(const wchar_t * string1,const wchar_t * string2,size_t comparision_length)38 int libclocale_wide_string_compare_no_case(
39 const wchar_t *string1,
40 const wchar_t *string2,
41 size_t comparision_length )
42 {
43 wint_t character1 = 0;
44 wint_t character2 = 0;
45
46 if( string1 == string2 )
47 {
48 return( 0 );
49 }
50 while( comparision_length > 0 )
51 {
52 character1 = towlower( *string1 );
53 character2 = towlower( *string2 );
54
55 if( ( character1 == 0 )
56 || ( character1 != character2 ) )
57 {
58 return( character1 - character2 );
59 }
60 string1++;
61 string2++;
62
63 comparision_length--;
64 }
65 return( 0 );
66 }
67
68 #endif /* defined( TOWLOWER ) && !defined( HAVE_WCSNCASECMP ) && !defined( HAVE_WCSCASECMP ) && !defined( WINAPI ) */
69
70