[apple/libc.git] / locale / setrunelocale-fbsd.c

/*-
 * 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>
__FBSDID("$FreeBSD: src/lib/libc/locale/setrunelocale.c,v 1.44 2004/10/18 02:06:18 ache Exp $");

#include "xlocale_private.h"

#include <runetype.h>
#include <errno.h>
#include <limits.h>
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <wchar.h>
#include "ldpart.h"
#include "mblocal.h"
#include "setlocale.h"

extern int		_none_init(struct __xlocale_st_runelocale *);
extern int		_UTF8_init(struct __xlocale_st_runelocale *);
extern int		_EUC_init(struct __xlocale_st_runelocale *);
extern int		_GB18030_init(struct __xlocale_st_runelocale *);
extern int		_GB2312_init(struct __xlocale_st_runelocale *);
extern int		_GBK_init(struct __xlocale_st_runelocale *);
extern int		_BIG5_init(struct __xlocale_st_runelocale *);
extern int		_MSKanji_init(struct __xlocale_st_runelocale *);
extern int		_UTF2_init(struct __xlocale_st_runelocale *);	/* deprecated */
extern struct __xlocale_st_runelocale	*_Read_RuneMagi(FILE *);

extern void spin_lock(int *);
extern void spin_unlock(int *);

#ifdef LEGACY_RUNE_APIS
/* depreciated interfaces */
rune_t	sgetrune(const char *, size_t, char const **);
int	sputrune(rune_t, char *, size_t, char **);
#endif /* LEGACY_RUNE_APIS */

__private_extern__ int
__setrunelocale(const char *encoding, locale_t loc)
{
	FILE *fp;
	char name[PATH_MAX];
	struct __xlocale_st_runelocale *xrl;
	_RuneLocale *rl;
	int saverr, ret;
	static struct __xlocale_st_runelocale *CachedRuneLocale;
	extern int __mb_cur_max;
	static int cache_lock = 0;

	/*
	 * The "C" and "POSIX" locale are always here.
	 */
	if (strcmp(encoding, "C") == 0 || strcmp(encoding, "POSIX") == 0) {
		XL_RELEASE(loc->__lc_ctype);
		loc->__lc_ctype = &_DefaultRuneXLocale;
		/* no need to retain _DefaultRuneXLocale */
		if (loc == &__global_locale) {
			_CurrentRuneLocale = &loc->__lc_ctype->_CurrentRuneLocale;
			__mb_cur_max = loc->__lc_ctype->__mb_cur_max;
		}
		return (0);
	}

	/*
	 * If the locale name is the same as our cache, use the cache.
	 */
	spin_lock(&cache_lock);
	if (CachedRuneLocale != NULL &&
	    strcmp(encoding, CachedRuneLocale->__ctype_encoding) == 0) {
		XL_RELEASE(loc->__lc_ctype);
		loc->__lc_ctype = CachedRuneLocale;
		XL_RETAIN(loc->__lc_ctype);
		if (loc == &__global_locale) {
			_CurrentRuneLocale = &loc->__lc_ctype->_CurrentRuneLocale;
			__mb_cur_max = loc->__lc_ctype->__mb_cur_max;
		}
		spin_unlock(&cache_lock);
		return (0);
	}
	spin_unlock(&cache_lock);

	/*
	 * Slurp the locale file into the cache.
	 */

	/* Range checking not needed, encoding length already checked before */
	(void) strcpy(name, _PathLocale);
	(void) strcat(name, "/");
	(void) strcat(name, encoding);
	(void) strcat(name, "/LC_CTYPE");

	if ((fp = fopen(name, "r")) == NULL)
		return (errno == 0 ? ENOENT : errno);

	if ((xrl = _Read_RuneMagi(fp)) == NULL) {
		saverr = (errno == 0 ? EFTYPE : errno);
		(void)fclose(fp);
		return (saverr);
	}
	(void)fclose(fp);

	xrl->__mbrtowc = NULL;
	xrl->__mbsinit = NULL;
	xrl->__mbsnrtowcs = __mbsnrtowcs_std;
	xrl->__wcrtomb = NULL;
	xrl->__wcsnrtombs = __wcsnrtombs_std;

	rl = &xrl->_CurrentRuneLocale;

#ifdef LEGACY_RUNE_APIS
	/* provide backwards compatibility (depreciated interface) */
	rl->__sputrune = sputrune;
	rl->__sgetrune = sgetrune;
#else /* LEGACY_RUNE_APIS */
	rl->__sputrune = NULL;
	rl->__sgetrune = NULL;
#endif /* LEGACY_RUNE_APIS */

	if (strcmp(rl->__encoding, "NONE") == 0)
		ret = _none_init(xrl);
	else if (strcmp(rl->__encoding, "UTF-8") == 0)
		ret = _UTF8_init(xrl);
	else if (strcmp(rl->__encoding, "EUC") == 0)
		ret = _EUC_init(xrl);
 	else if (strcmp(rl->__encoding, "GB18030") == 0)
 		ret = _GB18030_init(xrl);
	else if (strcmp(rl->__encoding, "GB2312") == 0)
		ret = _GB2312_init(xrl);
	else if (strcmp(rl->__encoding, "GBK") == 0)
		ret = _GBK_init(xrl);
	else if (strcmp(rl->__encoding, "BIG5") == 0)
		ret = _BIG5_init(xrl);
	else if (strcmp(rl->__encoding, "MSKanji") == 0)
		ret = _MSKanji_init(xrl);
	else if (strcmp(rl->__encoding, "UTF2") == 0)
		ret = _UTF2_init(xrl);
	else
		ret = EFTYPE;
	if (ret == 0) {
		(void)strcpy(xrl->__ctype_encoding, encoding);
		XL_RELEASE(loc->__lc_ctype);
		loc->__lc_ctype = xrl;
		if (loc == &__global_locale) {
			_CurrentRuneLocale = &loc->__lc_ctype->_CurrentRuneLocale;
			__mb_cur_max = loc->__lc_ctype->__mb_cur_max;
		}
		spin_lock(&cache_lock);
		XL_RELEASE(CachedRuneLocale);
		CachedRuneLocale = xrl;
		XL_RETAIN(CachedRuneLocale);
		spin_unlock(&cache_lock);
	} else
		XL_RELEASE(xrl);

	return (ret);
}

#ifdef LEGACY_RUNE_APIS
int
setrunelocale(const char *encoding)
{
	return __setrunelocale(encoding, &__global_locale);
}
#endif /* LEGACY_RUNE_APIS */

__private_extern__ int
__wrap_setrunelocale(const char *locale, locale_t loc)
{
	int ret = __setrunelocale(locale, loc);

	if (ret != 0) {
		errno = ret;
		return (_LDP_ERROR);
	}
	return (_LDP_LOADED);
}
Commit	Line	Data
224c7076 A	1	/*-
	2	* Copyright (c) 1993
	3	* The Regents of the University of California. All rights reserved.
	4	*
	5	* This code is derived from software contributed to Berkeley by
	6	* Paul Borman at Krystal Technologies.
	7	*
	8	* Redistribution and use in source and binary forms, with or without
	9	* modification, are permitted provided that the following conditions
	10	* are met:
	11	* 1. Redistributions of source code must retain the above copyright
	12	* notice, this list of conditions and the following disclaimer.
	13	* 2. Redistributions in binary form must reproduce the above copyright
	14	* notice, this list of conditions and the following disclaimer in the
	15	* documentation and/or other materials provided with the distribution.
	16	* 3. All advertising materials mentioning features or use of this software
	17	* must display the following acknowledgement:
	18	* This product includes software developed by the University of
	19	* California, Berkeley and its contributors.
	20	* 4. Neither the name of the University nor the names of its contributors
	21	* may be used to endorse or promote products derived from this software
	22	* without specific prior written permission.
	23	*
	24	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	25	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	26	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	27	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	28	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	29	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	30	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	31	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	32	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	33	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	34	* SUCH DAMAGE.
	35	*/
	36
	37	#include <sys/cdefs.h>
	38	__FBSDID("$FreeBSD: src/lib/libc/locale/setrunelocale.c,v 1.44 2004/10/18 02:06:18 ache Exp $");
	39
	40	#include "xlocale_private.h"
	41
	42	#include <runetype.h>
	43	#include <errno.h>
	44	#include <limits.h>
	45	#include <string.h>
	46	#include <stdio.h>
	47	#include <stdlib.h>
	48	#include <unistd.h>
	49	#include <wchar.h>
	50	#include "ldpart.h"
	51	#include "mblocal.h"
	52	#include "setlocale.h"
	53
	54	extern int _none_init(struct __xlocale_st_runelocale *);
	55	extern int _UTF8_init(struct __xlocale_st_runelocale *);
	56	extern int _EUC_init(struct __xlocale_st_runelocale *);
	57	extern int _GB18030_init(struct __xlocale_st_runelocale *);
	58	extern int _GB2312_init(struct __xlocale_st_runelocale *);
	59	extern int _GBK_init(struct __xlocale_st_runelocale *);
	60	extern int _BIG5_init(struct __xlocale_st_runelocale *);
	61	extern int _MSKanji_init(struct __xlocale_st_runelocale *);
	62	extern int _UTF2_init(struct __xlocale_st_runelocale ); / deprecated */
	63	extern struct __xlocale_st_runelocale _Read_RuneMagi(FILE );
	64
65	extern void spin_lock(int *);
66	extern void spin_unlock(int *);
67
b5d655f7	68	#ifdef LEGACY_RUNE_APIS
224c7076 A	69	/* depreciated interfaces */
	70	rune_t sgetrune(const char , size_t, char const *);
	71	int sputrune(rune_t, char , size_t, char *);
b5d655f7	72	#endif /* LEGACY_RUNE_APIS */
224c7076 A	73
	74	__private_extern__ int
	75	__setrunelocale(const char *encoding, locale_t loc)
	76	{
	77	FILE *fp;
	78	char name[PATH_MAX];
	79	struct __xlocale_st_runelocale *xrl;
	80	_RuneLocale *rl;
	81	int saverr, ret;
	82	static struct __xlocale_st_runelocale *CachedRuneLocale;
	83	extern int __mb_cur_max;
	84	static int cache_lock = 0;
	85
	86	/*
	87	* The "C" and "POSIX" locale are always here.
	88	*/
	89	if (strcmp(encoding, "C") == 0 \|\| strcmp(encoding, "POSIX") == 0) {
	90	XL_RELEASE(loc->__lc_ctype);
	91	loc->__lc_ctype = &_DefaultRuneXLocale;
	92	/* no need to retain _DefaultRuneXLocale */
	93	if (loc == &__global_locale) {
	94	_CurrentRuneLocale = &loc->__lc_ctype->_CurrentRuneLocale;
	95	__mb_cur_max = loc->__lc_ctype->__mb_cur_max;
	96	}
	97	return (0);
	98	}
	99
	100	/*
	101	* If the locale name is the same as our cache, use the cache.
	102	*/
	103	spin_lock(&cache_lock);
	104	if (CachedRuneLocale != NULL &&
	105	strcmp(encoding, CachedRuneLocale->__ctype_encoding) == 0) {
	106	XL_RELEASE(loc->__lc_ctype);
	107	loc->__lc_ctype = CachedRuneLocale;
	108	XL_RETAIN(loc->__lc_ctype);
	109	if (loc == &__global_locale) {
	110	_CurrentRuneLocale = &loc->__lc_ctype->_CurrentRuneLocale;
	111	__mb_cur_max = loc->__lc_ctype->__mb_cur_max;
	112	}
	113	spin_unlock(&cache_lock);
	114	return (0);
	115	}
	116	spin_unlock(&cache_lock);
	117
	118	/*
	119	* Slurp the locale file into the cache.
	120	*/
	121
	122	/* Range checking not needed, encoding length already checked before */
	123	(void) strcpy(name, _PathLocale);
	124	(void) strcat(name, "/");
	125	(void) strcat(name, encoding);
	126	(void) strcat(name, "/LC_CTYPE");
	127
	128	if ((fp = fopen(name, "r")) == NULL)
	129	return (errno == 0 ? ENOENT : errno);
	130
	131	if ((xrl = _Read_RuneMagi(fp)) == NULL) {
	132	saverr = (errno == 0 ? EFTYPE : errno);
	133	(void)fclose(fp);
	134	return (saverr);
	135	}
	136	(void)fclose(fp);
137
138	xrl->__mbrtowc = NULL;
139	xrl->__mbsinit = NULL;
140	xrl->__mbsnrtowcs = __mbsnrtowcs_std;
141	xrl->__wcrtomb = NULL;
142	xrl->__wcsnrtombs = __wcsnrtombs_std;
143
144	rl = &xrl->_CurrentRuneLocale;
145
b5d655f7	146	#ifdef LEGACY_RUNE_APIS
224c7076 A	147	/* provide backwards compatibility (depreciated interface) */
	148	rl->__sputrune = sputrune;
	149	rl->__sgetrune = sgetrune;
b5d655f7 A	150	#else /* LEGACY_RUNE_APIS */
	151	rl->__sputrune = NULL;
	152	rl->__sgetrune = NULL;
	153	#endif /* LEGACY_RUNE_APIS */
224c7076 A	154
	155	if (strcmp(rl->__encoding, "NONE") == 0)
	156	ret = _none_init(xrl);
	157	else if (strcmp(rl->__encoding, "UTF-8") == 0)
	158	ret = _UTF8_init(xrl);
	159	else if (strcmp(rl->__encoding, "EUC") == 0)
	160	ret = _EUC_init(xrl);
	161	else if (strcmp(rl->__encoding, "GB18030") == 0)
	162	ret = _GB18030_init(xrl);
	163	else if (strcmp(rl->__encoding, "GB2312") == 0)
	164	ret = _GB2312_init(xrl);
	165	else if (strcmp(rl->__encoding, "GBK") == 0)
	166	ret = _GBK_init(xrl);
	167	else if (strcmp(rl->__encoding, "BIG5") == 0)
	168	ret = _BIG5_init(xrl);
	169	else if (strcmp(rl->__encoding, "MSKanji") == 0)
	170	ret = _MSKanji_init(xrl);
	171	else if (strcmp(rl->__encoding, "UTF2") == 0)
	172	ret = _UTF2_init(xrl);
	173	else
	174	ret = EFTYPE;
	175	if (ret == 0) {
	176	(void)strcpy(xrl->__ctype_encoding, encoding);
	177	XL_RELEASE(loc->__lc_ctype);
	178	loc->__lc_ctype = xrl;
	179	if (loc == &__global_locale) {
	180	_CurrentRuneLocale = &loc->__lc_ctype->_CurrentRuneLocale;
	181	__mb_cur_max = loc->__lc_ctype->__mb_cur_max;
	182	}
	183	spin_lock(&cache_lock);
	184	XL_RELEASE(CachedRuneLocale);
	185	CachedRuneLocale = xrl;
	186	XL_RETAIN(CachedRuneLocale);
	187	spin_unlock(&cache_lock);
	188	} else
	189	XL_RELEASE(xrl);
	190
	191	return (ret);
	192	}
	193
b5d655f7	194	#ifdef LEGACY_RUNE_APIS
224c7076 A	195	int
	196	setrunelocale(const char *encoding)
	197	{
	198	return __setrunelocale(encoding, &__global_locale);
	199	}
b5d655f7	200	#endif /* LEGACY_RUNE_APIS */
224c7076 A	201
	202	__private_extern__ int
	203	__wrap_setrunelocale(const char *locale, locale_t loc)
	204	{
	205	int ret = __setrunelocale(locale, loc);
	206
	207	if (ret != 0) {
	208	errno = ret;
	209	return (_LDP_ERROR);
	210	}
	211	return (_LDP_LOADED);
	212	}
	213