diff options
Diffstat (limited to 'lib/libc/locale/ldpart.c')
| -rw-r--r-- | lib/libc/locale/ldpart.c | 161 |
1 files changed, 161 insertions, 0 deletions
diff --git a/lib/libc/locale/ldpart.c b/lib/libc/locale/ldpart.c new file mode 100644 index 0000000..ceb8394 --- /dev/null +++ b/lib/libc/locale/ldpart.c @@ -0,0 +1,161 @@ +/* + * Copyright (c) 2000, 2001 Alexey Zelkin <phantom@FreeBSD.org> + * All rights reserved. + * + * 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. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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 "namespace.h" +#include <sys/types.h> +#include <sys/stat.h> + +#include <errno.h> +#include <fcntl.h> +#include <limits.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> +#include "un-namespace.h" + +#include "setlocale.h" +#include "ldpart.h" + +static int split_lines(char *, const char *); + +int +__part_load_locale(const char *name, + int *using_locale, + char *locale_buf, + const char *category_filename, + int locale_buf_size_max, + int locale_buf_size_min, + const char **dst_localebuf) +{ + int saverr, fd, i, num_lines; + char *lbuf, *p; + const char *plim; + char filename[PATH_MAX]; + struct stat st; + size_t namesize, bufsize; + + /* 'name' must be already checked. */ + if (strcmp(name, "C") == 0 || strcmp(name, "POSIX") == 0) { + *using_locale = 0; + return (_LDP_CACHE); + } + + /* + * If the locale name is the same as our cache, use the cache. + */ + if (locale_buf != NULL && strcmp(name, locale_buf) == 0) { + *using_locale = 1; + return (_LDP_CACHE); + } + + /* + * Slurp the locale file into the cache. + */ + namesize = strlen(name) + 1; + + /* 'PathLocale' must be already set & checked. */ + /* Range checking not needed, 'name' size is limited */ + strcpy(filename, _PathLocale); + strcat(filename, "/"); + strcat(filename, name); + strcat(filename, "/"); + strcat(filename, category_filename); + if ((fd = _open(filename, O_RDONLY)) < 0) + return (_LDP_ERROR); + if (_fstat(fd, &st) != 0) + goto bad_locale; + if (st.st_size <= 0) { + errno = EFTYPE; + goto bad_locale; + } + bufsize = namesize + st.st_size; + if ((lbuf = malloc(bufsize)) == NULL) { + errno = ENOMEM; + goto bad_locale; + } + (void)strcpy(lbuf, name); + p = lbuf + namesize; + plim = p + st.st_size; + if (_read(fd, p, (size_t) st.st_size) != st.st_size) + goto bad_lbuf; + /* + * Parse the locale file into localebuf. + */ + if (plim[-1] != '\n') { + errno = EFTYPE; + goto bad_lbuf; + } + num_lines = split_lines(p, plim); + if (num_lines >= locale_buf_size_max) + num_lines = locale_buf_size_max; + else if (num_lines >= locale_buf_size_min) + num_lines = locale_buf_size_min; + else { + errno = EFTYPE; + goto bad_lbuf; + } + (void)_close(fd); + /* + * Record the successful parse in the cache. + */ + if (locale_buf != NULL) + free(locale_buf); + locale_buf = lbuf; + for (p = locale_buf, i = 0; i < num_lines; i++) + dst_localebuf[i] = (p += strlen(p) + 1); + for (i = num_lines; i < locale_buf_size_max; i++) + dst_localebuf[i] = NULL; + *using_locale = 1; + + return (_LDP_LOADED); + +bad_lbuf: + saverr = errno; + free(lbuf); + errno = saverr; +bad_locale: + saverr = errno; + (void)_close(fd); + errno = saverr; + + return (_LDP_ERROR); +} + +static int +split_lines(char *p, const char *plim) +{ + int i; + + for (i = 0; p < plim; i++) { + p = strchr(p, '\n'); + *p++ = '\0'; + } + return (i); +} + |
