diff options
Diffstat (limited to 'lib/libc/locale/setrunelocale.c')
| -rw-r--r-- | lib/libc/locale/setrunelocale.c | 215 |
1 files changed, 215 insertions, 0 deletions
diff --git a/lib/libc/locale/setrunelocale.c b/lib/libc/locale/setrunelocale.c new file mode 100644 index 0000000..3ffb649 --- /dev/null +++ b/lib/libc/locale/setrunelocale.c @@ -0,0 +1,215 @@ +/*- + * 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. + * + * Copyright (c) 2011 The FreeBSD Foundation + * All rights reserved. + * Portions of this software were developed by David Chisnall + * under sponsorship from the FreeBSD Foundation. + * + * 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. + * 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("$FreeBSD$"); + +#define __RUNETYPE_INTERNAL 1 + +#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" + +#undef _CurrentRuneLocale +extern _RuneLocale const *_CurrentRuneLocale; +#ifndef __NO_TLS +/* + * A cached version of the runes for this thread. Used by ctype.h + */ +_Thread_local const _RuneLocale *_ThreadRuneLocale; +#endif + +extern int __mb_sb_limit; + +extern _RuneLocale *_Read_RuneMagi(FILE *); + +static int __setrunelocale(struct xlocale_ctype *l, const char *); + +#define __collate_substitute_nontrivial (table->__collate_substitute_nontrivial) +#define __collate_substitute_table_ptr (table->__collate_substitute_table_ptr) +#define __collate_char_pri_table_ptr (table->__collate_char_pri_table_ptr) +#define __collate_chain_pri_table (table->__collate_chain_pri_table) + + +static void destruct_ctype(void *v) +{ + struct xlocale_ctype *l = v; + if (strcmp(l->runes->__encoding, "EUC") == 0) + free(l->runes->__variable); + if (&_DefaultRuneLocale != l->runes) + free(l->runes); + free(l); +} + +const _RuneLocale *__getCurrentRuneLocale(void) +{ + return XLOCALE_CTYPE(__get_locale())->runes; +} + +static void free_runes(_RuneLocale *rl) +{ + /* FIXME: The "EUC" check here is a hideous abstraction violation. */ + if ((rl != &_DefaultRuneLocale) && (rl)) { + if (strcmp(rl->__encoding, "EUC") == 0) { + free(rl->__variable); + } + free(rl); + } +} + +static int +__setrunelocale(struct xlocale_ctype *l, const char *encoding) +{ + FILE *fp; + char name[PATH_MAX]; + _RuneLocale *rl; + int saverr, ret; + struct xlocale_ctype saved = *l; + + /* + * The "C" and "POSIX" locale are always here. + */ + if (strcmp(encoding, "C") == 0 || strcmp(encoding, "POSIX") == 0) { + free_runes(saved.runes); + (void) _none_init(l, (_RuneLocale*)&_DefaultRuneLocale); + return (0); + } + + /* 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 ((rl = _Read_RuneMagi(fp)) == NULL) { + saverr = (errno == 0 ? EFTYPE : errno); + (void)fclose(fp); + return (saverr); + } + (void)fclose(fp); + + l->__mbrtowc = NULL; + l->__mbsinit = NULL; + l->__mbsnrtowcs = __mbsnrtowcs_std; + l->__wcrtomb = NULL; + l->__wcsnrtombs = __wcsnrtombs_std; + + rl->__sputrune = NULL; + rl->__sgetrune = NULL; + if (strcmp(rl->__encoding, "NONE") == 0) + ret = _none_init(l, rl); + else if (strcmp(rl->__encoding, "ASCII") == 0) + ret = _ascii_init(l, rl); + else if (strcmp(rl->__encoding, "UTF-8") == 0) + ret = _UTF8_init(l, rl); + else if (strcmp(rl->__encoding, "EUC") == 0) + ret = _EUC_init(l, rl); + else if (strcmp(rl->__encoding, "GB18030") == 0) + ret = _GB18030_init(l, rl); + else if (strcmp(rl->__encoding, "GB2312") == 0) + ret = _GB2312_init(l, rl); + else if (strcmp(rl->__encoding, "GBK") == 0) + ret = _GBK_init(l, rl); + else if (strcmp(rl->__encoding, "BIG5") == 0) + ret = _BIG5_init(l, rl); + else if (strcmp(rl->__encoding, "MSKanji") == 0) + ret = _MSKanji_init(l, rl); + else + ret = EFTYPE; + + if (ret == 0) { + /* Free the old runes if it exists. */ + free_runes(saved.runes); + } else { + /* Restore the saved version if this failed. */ + memcpy(l, &saved, sizeof(struct xlocale_ctype)); + free(rl); + } + + return (ret); +} + +int +__wrap_setrunelocale(const char *locale) +{ + int ret = __setrunelocale(&__xlocale_global_ctype, locale); + + if (ret != 0) { + errno = ret; + return (_LDP_ERROR); + } + __mb_cur_max = __xlocale_global_ctype.__mb_cur_max; + __mb_sb_limit = __xlocale_global_ctype.__mb_sb_limit; + _CurrentRuneLocale = __xlocale_global_ctype.runes; + return (_LDP_LOADED); +} + +#ifndef __NO_TLS +void +__set_thread_rune_locale(locale_t loc) { + + if (loc == NULL) { + _ThreadRuneLocale = &_DefaultRuneLocale; + } else { + _ThreadRuneLocale = XLOCALE_CTYPE(loc)->runes; + } +} +#endif + +void * +__ctype_load(const char *locale, locale_t unused) +{ + struct xlocale_ctype *l = calloc(sizeof(struct xlocale_ctype), 1); + l->header.header.destructor = destruct_ctype; + if (__setrunelocale(l, locale)) + { + free(l); + return NULL; + } + return l; +} |
