245 lines
8.6 KiB
C
245 lines
8.6 KiB
C
/* $NetBSD: nb_lc_template.h,v 1.8 2013/09/13 13:13:32 joerg Exp $ */
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/*-
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* Copyright (c)1999, 2008 Citrus Project,
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*-
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* Copyright (c) 1998 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Paul Kranenburg.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*-
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* Copyright (c) 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Paul Borman at Krystal Technologies.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef _NB_LC_TEMPLATE_H_
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#define _NB_LC_TEMPLATE_H_
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#define _nb_part_t _PREFIX(part_t)
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#define _nb_part_cache _PREFIX(part_cache)
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#define _nb_mutex _PREFIX(mutex)
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typedef struct _nb_part_t {
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char name[_LOCALENAME_LEN_MAX];
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_CATEGORY_TYPE *impl;
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SIMPLEQ_ENTRY(_nb_part_t) entry;
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} _nb_part_t;
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static SIMPLEQ_HEAD(, _nb_part_t) _nb_part_cache =
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SIMPLEQ_HEAD_INITIALIZER(_nb_part_cache);
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#ifdef _REENTRANT
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static mutex_t _nb_mutex = MUTEX_INITIALIZER;
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#endif
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static int
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_PREFIX(load_sub)(const char * __restrict name, const char * __restrict real,
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const char ** __restrict out_name, _CATEGORY_TYPE ** __restrict out_impl,
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int force)
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{
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const char *cached_name;
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_CATEGORY_TYPE *cached_impl;
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_nb_part_t *p;
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int ret;
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_DIAGASSERT(name != NULL);
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_DIAGASSERT(out_name != NULL);
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_DIAGASSERT(out_impl != NULL);
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if (!strcmp(_C_LOCALE, name)) {
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cached_name = _lc_C_locale.part_name[_CATEGORY_ID];
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cached_impl = _lc_C_locale.part_impl[_CATEGORY_ID];
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} else if (!strcmp(_POSIX_LOCALE, name)) {
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cached_name = _POSIX_LOCALE;
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cached_impl = _lc_C_locale.part_impl[_CATEGORY_ID];
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} else {
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SIMPLEQ_FOREACH(p, &_nb_part_cache, entry) {
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if (!strcmp((const char *)&p->name[0], name)) {
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cached_name = p->name;
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cached_impl = p->impl;
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goto found;
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}
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}
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p = malloc(sizeof(*p));
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if (p == NULL)
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return ENOMEM;
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if (force) {
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p->impl = _lc_C_locale.part_impl[_CATEGORY_ID];
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} else {
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_DIAGASSERT(_PathLocale != NULL);
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ret = _PREFIX(create_impl)((const char *)_PathLocale,
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name, &p->impl);
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if (ret) {
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free(p);
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return ret;
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}
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}
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strlcpy(&p->name[0], name, sizeof(p->name));
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SIMPLEQ_INSERT_TAIL(&_nb_part_cache, p, entry);
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cached_name = p->name;
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cached_impl = p->impl;
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}
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found:
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if (real != NULL) {
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p = malloc(sizeof(*p));
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if (p == NULL)
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return ENOMEM;
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strlcpy(&p->name[0], real, sizeof(p->name));
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cached_name = p->name;
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p->impl = cached_impl;
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SIMPLEQ_INSERT_TAIL(&_nb_part_cache, p, entry);
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}
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*out_name = cached_name;
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*out_impl = cached_impl;
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return 0;
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}
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static __inline int
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_PREFIX(load)(const char * __restrict name,
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const char ** __restrict out_name, _CATEGORY_TYPE ** __restrict out_impl)
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{
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int ret, force;
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char path[PATH_MAX + 1], loccat[PATH_MAX + 1], buf[PATH_MAX + 1];
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const char *aliaspath, *alias;
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#define _LOAD_SUB_ALIAS(key) \
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do { \
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alias = __unaliasname(aliaspath, key, &buf[0], sizeof(buf)); \
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if (alias != NULL) { \
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ret = (force = !__isforcemapping(alias)) \
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? _PREFIX(load_sub)(name, NULL, out_name, out_impl, \
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force) \
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: _PREFIX(load_sub)(alias, name, out_name, out_impl, \
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force); \
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_DIAGASSERT(!ret || !force); \
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goto done; \
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} \
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} while (/*CONSTCOND*/0)
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/* (1) non-aliased file */
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mutex_lock(&_nb_mutex);
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ret = _PREFIX(load_sub)(name, NULL, out_name, out_impl, 0);
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if (ret != ENOENT)
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goto done;
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/* (2) lookup locname/catname type alias */
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_DIAGASSERT(_PathLocale != NULL);
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snprintf(&path[0], sizeof(path),
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"%s/" _LOCALE_ALIAS_NAME, _PathLocale);
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aliaspath = (const char *)&path[0];
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snprintf(&loccat[0], sizeof(loccat),
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"%s/" _CATEGORY_NAME, name);
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_LOAD_SUB_ALIAS((const char *)&loccat[0]);
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/* (3) lookup locname type alias */
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_LOAD_SUB_ALIAS(name);
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done:
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mutex_unlock(&_nb_mutex);
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return ret;
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}
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const char *
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_PREFIX(setlocale)(const char * __restrict name,
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struct _locale * __restrict locale)
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{
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const char *loaded_name;
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_CATEGORY_TYPE *loaded_impl;
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/* name may be NULL */
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_DIAGASSERT(locale != NULL);
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if (name != NULL) {
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if (*name == '\0')
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name = _get_locale_env(_CATEGORY_NAME);
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_DIAGASSERT(name != NULL);
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_DIAGASSERT(locale->part_name[(size_t)_CATEGORY_ID] != NULL);
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if (strcmp(name, locale->part_name[(size_t)_CATEGORY_ID])) {
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if (_PREFIX(load)(name, &loaded_name, &loaded_impl))
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return NULL;
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locale->part_name[(size_t)_CATEGORY_ID] = loaded_name;
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locale->part_impl[(size_t)_CATEGORY_ID] = loaded_impl;
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if (locale == &_lc_global_locale)
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_PREFIX(update_global)(loaded_impl);
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}
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}
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return locale->part_name[(size_t)_CATEGORY_ID];
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}
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#endif /*_NB_LC_TEMPLATE_H_*/
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