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Hash :
7aec9c72
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Date :
2025-07-04T21:29:25
strncasecmp_l: Fix previous change. Suggested by Bruno Haible in: <https://lists.gnu.org/archive/html/bug-gnulib/2025-07/msg00009.html>. * lib/strncasecmp_l.c: Include c-strcase.h unconditionally. Use #include "c-strcase.h" instead of #include <c-strcase.h>.
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/* Case-insensitive string comparison function for unibyte locales.
Copyright (C) 1998-2025 Free Software Foundation, Inc.
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
This file 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 Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
#include <config.h>
/* Specification. */
#include <strings.h>
#include <ctype.h>
#include <limits.h>
#include <string.h>
#include "c-strcase.h"
int
strncasecmp_l (const char *s1, const char *s2, size_t n, locale_t locale)
{
#if GNULIB_defined_locale_t
struct gl_locale_category_t *plc =
&locale->category[gl_log2_lcmask_to_index (gl_log2_lc_mask (LC_CTYPE))];
if (plc->is_c_locale)
/* Implementation for the "C" locale. */
return c_strncasecmp (s1, s2, n);
# if HAVE_WINDOWS_LOCALE_T
/* Documentation:
<https://learn.microsoft.com/en-us/cpp/c-runtime-library/reference/strnicmp-wcsnicmp-mbsnicmp-strnicmp-l-wcsnicmp-l-mbsnicmp-l> */
return _strnicmp_l (s1, s2, n, plc->system_locale);
# else
/* Implementation for the global locale. */
{
int ret;
# if HAVE_WORKING_USELOCALE
locale_t saved_locale = uselocale (LC_GLOBAL_LOCALE);
# endif
ret = strncasecmp (s1, s2, n);
# if HAVE_WORKING_USELOCALE
uselocale (saved_locale);
# endif
return ret;
}
# endif
#else
unsigned char c1, c2;
if (s1 == s2 || n == 0)
return 0;
do
{
c1 = tolower_l ((unsigned char) *s1, locale);
c2 = tolower_l ((unsigned char) *s2, locale);
if (--n == 0 || c1 == '\0')
break;
++s1;
++s2;
}
while (c1 == c2);
if (UCHAR_MAX <= INT_MAX)
return c1 - c2;
else
/* On machines where 'char' and 'int' are types of the same size, the
difference of two 'unsigned char' values - including the sign bit -
doesn't fit in an 'int'. */
return _GL_CMP (c1, c2);
#endif
}