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Diffstat (limited to 'lib/libc/locale/none.c')
| -rw-r--r-- | lib/libc/locale/none.c | 193 |
1 files changed, 193 insertions, 0 deletions
diff --git a/lib/libc/locale/none.c b/lib/libc/locale/none.c new file mode 100644 index 0000000..06b55b9 --- /dev/null +++ b/lib/libc/locale/none.c @@ -0,0 +1,193 @@ +/*- + * Copyright (c) 2002-2004 Tim J. Robbins. All rights reserved. + * 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. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)none.c 8.1 (Berkeley) 6/4/93"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <errno.h> +#include <limits.h> +#include <runetype.h> +#include <stddef.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <wchar.h> +#include "mblocal.h" + +static size_t _none_mbrtowc(wchar_t * __restrict, const char * __restrict, + size_t, mbstate_t * __restrict); +static int _none_mbsinit(const mbstate_t *); +static size_t _none_mbsnrtowcs(wchar_t * __restrict dst, + const char ** __restrict src, size_t nms, size_t len, + mbstate_t * __restrict ps __unused); +static size_t _none_wcrtomb(char * __restrict, wchar_t, + mbstate_t * __restrict); +static size_t _none_wcsnrtombs(char * __restrict, const wchar_t ** __restrict, + size_t, size_t, mbstate_t * __restrict); + +int +_none_init(_RuneLocale *rl) +{ + + __mbrtowc = _none_mbrtowc; + __mbsinit = _none_mbsinit; + __mbsnrtowcs = _none_mbsnrtowcs; + __wcrtomb = _none_wcrtomb; + __wcsnrtombs = _none_wcsnrtombs; + _CurrentRuneLocale = rl; + __mb_cur_max = 1; + return(0); +} + +static int +_none_mbsinit(const mbstate_t *ps __unused) +{ + + /* + * Encoding is not state dependent - we are always in the + * initial state. + */ + return (1); +} + +static size_t +_none_mbrtowc(wchar_t * __restrict pwc, const char * __restrict s, size_t n, + mbstate_t * __restrict ps __unused) +{ + + if (s == NULL) + /* Reset to initial shift state (no-op) */ + return (0); + if (n == 0) + /* Incomplete multibyte sequence */ + return ((size_t)-2); + if (pwc != NULL) + *pwc = (unsigned char)*s; + return (*s == '\0' ? 0 : 1); +} + +static size_t +_none_wcrtomb(char * __restrict s, wchar_t wc, + mbstate_t * __restrict ps __unused) +{ + + if (s == NULL) + /* Reset to initial shift state (no-op) */ + return (1); + if (wc < 0 || wc > UCHAR_MAX) { + errno = EILSEQ; + return ((size_t)-1); + } + *s = (unsigned char)wc; + return (1); +} + +static size_t +_none_mbsnrtowcs(wchar_t * __restrict dst, const char ** __restrict src, + size_t nms, size_t len, mbstate_t * __restrict ps __unused) +{ + const char *s; + size_t nchr; + + if (dst == NULL) { + s = memchr(*src, '\0', nms); + return (s != NULL ? s - *src : nms); + } + + s = *src; + nchr = 0; + while (len-- > 0 && nms-- > 0) { + if ((*dst++ = (unsigned char)*s++) == L'\0') { + *src = NULL; + return (nchr); + } + nchr++; + } + *src = s; + return (nchr); +} + +static size_t +_none_wcsnrtombs(char * __restrict dst, const wchar_t ** __restrict src, + size_t nwc, size_t len, mbstate_t * __restrict ps __unused) +{ + const wchar_t *s; + size_t nchr; + + if (dst == NULL) { + for (s = *src; nwc > 0 && *s != L'\0'; s++, nwc--) { + if (*s < 0 || *s > UCHAR_MAX) { + errno = EILSEQ; + return ((size_t)-1); + } + } + return (s - *src); + } + + s = *src; + nchr = 0; + while (len-- > 0 && nwc-- > 0) { + if (*s < 0 || *s > UCHAR_MAX) { + errno = EILSEQ; + return ((size_t)-1); + } + if ((*dst++ = *s++) == '\0') { + *src = NULL; + return (nchr); + } + nchr++; + } + *src = s; + return (nchr); +} + +/* setup defaults */ + +int __mb_cur_max = 1; +size_t (*__mbrtowc)(wchar_t * __restrict, const char * __restrict, size_t, + mbstate_t * __restrict) = _none_mbrtowc; +int (*__mbsinit)(const mbstate_t *) = _none_mbsinit; +size_t (*__mbsnrtowcs)(wchar_t * __restrict, const char ** __restrict, + size_t, size_t, mbstate_t * __restrict) = _none_mbsnrtowcs; +size_t (*__wcrtomb)(char * __restrict, wchar_t, mbstate_t * __restrict) = + _none_wcrtomb; +size_t (*__wcsnrtombs)(char * __restrict, const wchar_t ** __restrict, + size_t, size_t, mbstate_t * __restrict) = _none_wcsnrtombs; + |
