diff options
Diffstat (limited to 'lib/libc/locale/setrunelocale.c')
| -rw-r--r-- | lib/libc/locale/setrunelocale.c | 159 |
1 files changed, 159 insertions, 0 deletions
diff --git a/lib/libc/locale/setrunelocale.c b/lib/libc/locale/setrunelocale.c new file mode 100644 index 0000000..9cfe8d6 --- /dev/null +++ b/lib/libc/locale/setrunelocale.c @@ -0,0 +1,159 @@ +/*- + * 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("$FreeBSD$"); + +#include <rune.h> +#include <errno.h> +#include <limits.h> +#include <string.h> +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include "setlocale.h" + +extern int _none_init(_RuneLocale *); +extern int _UTF2_init(_RuneLocale *); +extern int _UTF8_init(_RuneLocale *); +extern int _EUC_init(_RuneLocale *); +extern int _BIG5_init(_RuneLocale *); +extern int _MSKanji_init(_RuneLocale *); +extern _RuneLocale *_Read_RuneMagi(FILE *); + +int +setrunelocale(char *encoding) +{ + FILE *fp; + char name[PATH_MAX]; + _RuneLocale *rl; + int saverr, ret; + static char ctype_encoding[ENCODING_LEN + 1]; + static _RuneLocale *CachedRuneLocale; + static int Cached__mb_cur_max; + + if (!encoding || !*encoding || strlen(encoding) > ENCODING_LEN || + (encoding[0] == '.' && + (encoding[1] == '\0' || + (encoding[1] == '.' && encoding[2] == '\0'))) || + strchr(encoding, '/') != NULL) + return (EINVAL); + + /* + * The "C" and "POSIX" locale are always here. + */ + if (strcmp(encoding, "C") == 0 || strcmp(encoding, "POSIX") == 0) { + _CurrentRuneLocale = &_DefaultRuneLocale; + __mb_cur_max = 1; + 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; + return (0); + } + + /* + * Slurp the locale file into the cache. + */ + if (_PathLocale == NULL) { + char *p = getenv("PATH_LOCALE"); + + if (p != NULL +#ifndef __NETBSD_SYSCALLS + && !issetugid() +#endif + ) { + if (strlen(p) + 1/*"/"*/ + ENCODING_LEN + + 1/*"/"*/ + CATEGORY_LEN >= PATH_MAX) + return (ENAMETOOLONG); + _PathLocale = strdup(p); + if (_PathLocale == NULL) + return (errno == 0 ? ENOMEM : errno); + } else + _PathLocale = _PATH_LOCALE; + } + /* Range checking not needed, encoding length already checked above */ + (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); + + if (strcmp(rl->encoding, "NONE") == 0) + ret = _none_init(rl); + else if (strcmp(rl->encoding, "UTF2") == 0) + ret = _UTF2_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, "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; + (void)strcpy(ctype_encoding, encoding); + } else + free(rl); + + return (ret); +} + |
