NetBSD/lib/libc/locale/setrunelocale.c

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2002-08-03 15:10:51 +04:00
/* $NetBSD: setrunelocale.c,v 1.13 2002/08/03 11:10:51 yamt Exp $ */
/*-
* Copyright (c)1999 Citrus Project,
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
/*-
* Copyright (c) 1998 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Paul Kranenburg.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
/*-
* Copyright (c) 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Paul Borman at Krystal Technologies.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
#if defined(LIBC_SCCS) && !defined(lint)
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__RCSID("$NetBSD: setrunelocale.c,v 1.13 2002/08/03 11:10:51 yamt Exp $");
#endif /* LIBC_SCCS and not lint */
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#include "namespace.h"
#include "rune.h"
#include <assert.h>
#include <errno.h>
#include <limits.h>
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <stddef.h>
#include <unistd.h>
#include <locale.h>
#include <citrus/citrus_module.h>
#include <citrus/citrus_ctype.h>
#include "rune_local.h"
#include "multibyte.h"
struct localetable {
char path[PATH_MAX];
_RuneLocale *runelocale;
struct localetable *next;
};
static struct localetable *localetable_head;
_RuneLocale *
_findrunelocale(path)
char *path;
{
struct localetable *lt;
_DIAGASSERT(path != NULL);
/* ones which we have seen already */
for (lt = localetable_head; lt; lt = lt->next)
if (strcmp(path, lt->path) == 0)
return lt->runelocale;
return NULL;
}
int
_newrunelocale(path)
char *path;
{
struct localetable *lt;
FILE *fp;
_RuneLocale *rl;
int ret;
/* path may be NULL (actually, it's checked below) */
if (!path || strlen(path) + 1 > sizeof(lt->path))
return EFAULT;
rl = _findrunelocale(path);
if (rl)
return 0;
if ((fp = fopen(path, "r")) == NULL)
return ENOENT;
if ((rl = _Read_RuneMagi(fp)) != NULL)
goto found;
/* necessary for backward compatibility */
if ((rl = _Read_CTypeAsRune(fp)) != NULL)
goto found;
fclose(fp);
return EFTYPE;
found:
fclose(fp);
rl->rl_citrus_ctype = NULL;
ret = _citrus_ctype_open(&rl->rl_citrus_ctype, rl->rl_encoding,
rl->rl_variable, rl->rl_variable_len,
_PRIVSIZE);
if (ret) {
_NukeRune(rl);
return ret;
}
if (__MB_LEN_MAX_RUNTIME <
_citrus_ctype_get_mb_cur_max(rl->rl_citrus_ctype)) {
_NukeRune(rl);
return EINVAL;
}
/* register it */
lt = malloc(sizeof(struct localetable));
if (lt == NULL) {
_NukeRune(rl);
return ENOMEM;
}
strlcpy(lt->path, path, sizeof(lt->path));
lt->runelocale = rl;
lt->next = localetable_head;
localetable_head = lt;
return 0;
}
#if 0
static int
delrunelocale(path)
char *path;
{
struct localetable *lt, *prev;
_RuneLocale *rl;
_DIAGASSERT(path != NULL);
prev = NULL;
for (lt = localetable_head; lt; prev = lt, lt = prev->next)
if (strcmp(path, lt->path) == 0)
break;
if (!lt)
return ENOENT;
/* remove runelocale registeration */
if (prev)
prev->next = lt->next;
else
localetable_head = lt->next;
lt->next = NULL;
free(lt);
/* cleanup everything */
rl = lt->runelocale;
dlclose(rl->rl_rune_RuneModule);
rl->rl_rune_RuneModule = NULL;
_NukeRune(rl);
return 0;
}
#endif
int
_xpg4_setrunelocale(encoding)
char *encoding;
{
char path[PATH_MAX];
_RuneLocale *rl;
int error;
_DIAGASSERT(encoding != NULL);
if (!strcmp(encoding, "C") || !strcmp(encoding, "POSIX")) {
rl = &_DefaultRuneLocale;
goto found;
}
snprintf(path, sizeof(path), "%s/%s/LC_CTYPE", _PathLocale, encoding);
error = _newrunelocale(path);
if (error)
return error;
rl = _findrunelocale(path);
if (!rl)
return ENOENT;
found:
_CurrentRuneLocale = rl;
__mb_cur_max = _citrus_ctype_get_mb_cur_max(rl->rl_citrus_ctype);
return 0;
}