diff options
Diffstat (limited to 'lib/libc/locale/setrunelocale.c')
| -rw-r--r-- | lib/libc/locale/setrunelocale.c | 204 |
1 files changed, 204 insertions, 0 deletions
diff --git a/lib/libc/locale/setrunelocale.c b/lib/libc/locale/setrunelocale.c new file mode 100644 index 0000000..36d2894 --- /dev/null +++ b/lib/libc/locale/setrunelocale.c @@ -0,0 +1,204 @@ +/*- + * 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. + * 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("$FreeBSD$"); + +#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 __mb_sb_limit; + +extern _RuneLocale *_Read_RuneMagi(FILE *); + +static int __setrunelocale(const char *); + +static int +__setrunelocale(const char *encoding) +{ + FILE *fp; + char name[PATH_MAX]; + _RuneLocale *rl; + int saverr, ret; + size_t (*old__mbrtowc)(wchar_t * __restrict, + const char * __restrict, size_t, mbstate_t * __restrict); + size_t (*old__wcrtomb)(char * __restrict, wchar_t, + mbstate_t * __restrict); + int (*old__mbsinit)(const mbstate_t *); + size_t (*old__mbsnrtowcs)(wchar_t * __restrict, + const char ** __restrict, size_t, size_t, mbstate_t * __restrict); + size_t (*old__wcsnrtombs)(char * __restrict, + const wchar_t ** __restrict, size_t, size_t, + mbstate_t * __restrict); + static char ctype_encoding[ENCODING_LEN + 1]; + static _RuneLocale *CachedRuneLocale; + static int Cached__mb_cur_max; + static int Cached__mb_sb_limit; + static size_t (*Cached__mbrtowc)(wchar_t * __restrict, + const char * __restrict, size_t, mbstate_t * __restrict); + static size_t (*Cached__wcrtomb)(char * __restrict, wchar_t, + mbstate_t * __restrict); + static int (*Cached__mbsinit)(const mbstate_t *); + static size_t (*Cached__mbsnrtowcs)(wchar_t * __restrict, + const char ** __restrict, size_t, size_t, mbstate_t * __restrict); + static size_t (*Cached__wcsnrtombs)(char * __restrict, + const wchar_t ** __restrict, size_t, size_t, + mbstate_t * __restrict); + + /* + * The "C" and "POSIX" locale are always here. + */ + if (strcmp(encoding, "C") == 0 || strcmp(encoding, "POSIX") == 0) { + (void) _none_init(&_DefaultRuneLocale); + return (0); + } + + /* + * If the locale name is the same as our cache, use the cache. + */ + if (CachedRuneLocale != NULL && + strcmp(encoding, ctype_encoding) == 0) { + _CurrentRuneLocale = CachedRuneLocale; + __mb_cur_max = Cached__mb_cur_max; + __mb_sb_limit = Cached__mb_sb_limit; + __mbrtowc = Cached__mbrtowc; + __mbsinit = Cached__mbsinit; + __mbsnrtowcs = Cached__mbsnrtowcs; + __wcrtomb = Cached__wcrtomb; + __wcsnrtombs = Cached__wcsnrtombs; + return (0); + } + + /* + * 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 ((rl = _Read_RuneMagi(fp)) == NULL) { + saverr = (errno == 0 ? EFTYPE : errno); + (void)fclose(fp); + return (saverr); + } + (void)fclose(fp); + + old__mbrtowc = __mbrtowc; + old__mbsinit = __mbsinit; + old__mbsnrtowcs = __mbsnrtowcs; + old__wcrtomb = __wcrtomb; + old__wcsnrtombs = __wcsnrtombs; + + __mbrtowc = NULL; + __mbsinit = NULL; + __mbsnrtowcs = __mbsnrtowcs_std; + __wcrtomb = NULL; + __wcsnrtombs = __wcsnrtombs_std; + + rl->__sputrune = NULL; + rl->__sgetrune = NULL; + if (strcmp(rl->__encoding, "NONE") == 0) + ret = _none_init(rl); + else if (strcmp(rl->__encoding, "ASCII") == 0) + ret = _ascii_init(rl); + else if (strcmp(rl->__encoding, "UTF-8") == 0) + ret = _UTF8_init(rl); + else if (strcmp(rl->__encoding, "EUC") == 0) + ret = _EUC_init(rl); + else if (strcmp(rl->__encoding, "GB18030") == 0) + ret = _GB18030_init(rl); + else if (strcmp(rl->__encoding, "GB2312") == 0) + ret = _GB2312_init(rl); + else if (strcmp(rl->__encoding, "GBK") == 0) + ret = _GBK_init(rl); + else if (strcmp(rl->__encoding, "BIG5") == 0) + ret = _BIG5_init(rl); + else if (strcmp(rl->__encoding, "MSKanji") == 0) + ret = _MSKanji_init(rl); + else + ret = EFTYPE; + + if (ret == 0) { + if (CachedRuneLocale != NULL) { + /* See euc.c */ + if (strcmp(CachedRuneLocale->__encoding, "EUC") == 0) + free(CachedRuneLocale->__variable); + free(CachedRuneLocale); + } + CachedRuneLocale = _CurrentRuneLocale; + Cached__mb_cur_max = __mb_cur_max; + Cached__mb_sb_limit = __mb_sb_limit; + Cached__mbrtowc = __mbrtowc; + Cached__mbsinit = __mbsinit; + Cached__mbsnrtowcs = __mbsnrtowcs; + Cached__wcrtomb = __wcrtomb; + Cached__wcsnrtombs = __wcsnrtombs; + (void)strcpy(ctype_encoding, encoding); + } else { + __mbrtowc = old__mbrtowc; + __mbsinit = old__mbsinit; + __mbsnrtowcs = old__mbsnrtowcs; + __wcrtomb = old__wcrtomb; + __wcsnrtombs = old__wcsnrtombs; + free(rl); + } + + return (ret); +} + +int +__wrap_setrunelocale(const char *locale) +{ + int ret = __setrunelocale(locale); + + if (ret != 0) { + errno = ret; + return (_LDP_ERROR); + } + return (_LDP_LOADED); +} + |
