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/* Copyright (C) 1995-2024 Free Software Foundation, Inc.
Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, 1995.
This program 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 program 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/>. */
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include "loadinfo.h"
/* On some strange systems still no definition of NULL is found. Sigh! */
#ifndef NULL
# if defined __STDC__ && __STDC__
# define NULL ((void *) 0)
# else
# define NULL 0
# endif
#endif
/* @@ end of prolog @@ */
/* Split a locale name NAME into a leading language part and all the
rest. Return a pointer to the first character after the language,
i.e. to the first byte of the rest. */
static char *_nl_find_language (const char *name);
static char *
_nl_find_language (const char *name)
{
while (name[0] != '\0' && name[0] != '_' && name[0] != '@' && name[0] != '.')
++name;
return (char *) name;
}
int
_nl_explode_name (char *name,
const char **language, const char **modifier,
const char **territory, const char **codeset,
const char **normalized_codeset)
{
char *cp;
int mask;
*modifier = NULL;
*territory = NULL;
*codeset = NULL;
*normalized_codeset = NULL;
/* Now we determine the single parts of the locale name. First
look for the language. Termination symbols are `_', '.', and `@'. */
mask = 0;
*language = cp = name;
cp = _nl_find_language (*language);
if (*language == cp)
/* This does not make sense: language has to be specified. Use
this entry as it is without exploding. Perhaps it is an alias. */
cp = strchr (*language, '\0');
else
{
if (cp[0] == '_')
{
/* Next is the territory. */
cp[0] = '\0';
*territory = ++cp;
while (cp[0] != '\0' && cp[0] != '.' && cp[0] != '@')
++cp;
mask |= XPG_TERRITORY;
}
if (cp[0] == '.')
{
/* Next is the codeset. */
cp[0] = '\0';
*codeset = ++cp;
while (cp[0] != '\0' && cp[0] != '@')
++cp;
mask |= XPG_CODESET;
if (*codeset != cp && (*codeset)[0] != '\0')
{
*normalized_codeset = _nl_normalize_codeset (*codeset,
cp - *codeset);
if (*normalized_codeset == NULL)
return -1;
else if (strcmp (*codeset, *normalized_codeset) == 0)
free ((char *) *normalized_codeset);
else
mask |= XPG_NORM_CODESET;
}
}
}
if (cp[0] == '@')
{
/* Next is the modifier. */
cp[0] = '\0';
*modifier = ++cp;
if (cp[0] != '\0')
mask |= XPG_MODIFIER;
}
if (*territory != NULL && (*territory)[0] == '\0')
mask &= ~XPG_TERRITORY;
if (*codeset != NULL && (*codeset)[0] == '\0')
mask &= ~XPG_CODESET;
return mask;
}
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