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/* Determine name of the currently selected locale.
Copyright (C) 1995-2025 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/>. */
/* Written by Ulrich Drepper <drepper@gnu.org>, 1995. */
#include <config.h>
/* Specification. */
#include "localename.h"
#include <stdlib.h>
#include <string.h>
const char *
gl_locale_name_environ (_GL_UNUSED int category, const char *categoryname)
{
const char *retval;
/* Setting of LC_ALL overrides all other. */
retval = getenv ("LC_ALL");
if (retval != NULL && retval[0] != '\0')
return retval;
/* Next comes the name of the desired category. */
retval = getenv (categoryname);
if (retval != NULL && retval[0] != '\0')
return retval;
/* Last possibility is the LANG environment variable. */
retval = getenv ("LANG");
if (retval != NULL && retval[0] != '\0')
{
#if HAVE_CFPREFERENCESCOPYAPPVALUE
/* Mac OS X 10.2 or newer.
Ignore invalid LANG value set by the Terminal application. */
if (!streq (retval, "UTF-8"))
#endif
#if defined __CYGWIN__
/* Cygwin.
Ignore dummy LANG value set by ~/.profile. */
if (!streq (retval, "C.UTF-8"))
#endif
return retval;
}
return NULL;
}
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