diff options
Diffstat (limited to 'lib/libc/locale/mbsnrtowcs.c')
-rw-r--r-- | lib/libc/locale/mbsnrtowcs.c | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/lib/libc/locale/mbsnrtowcs.c b/lib/libc/locale/mbsnrtowcs.c new file mode 100644 index 0000000..15b48dd7 --- /dev/null +++ b/lib/libc/locale/mbsnrtowcs.c @@ -0,0 +1,102 @@ +/*- + * Copyright (c) 2002-2004 Tim J. Robbins. + * + * Copyright (c) 2011 The FreeBSD Foundation + * All rights reserved. + * Portions of this software were developed by David Chisnall + * under sponsorship from the FreeBSD Foundation. + * 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 <errno.h> +#include <limits.h> +#include <stdlib.h> +#include <wchar.h> +#include "mblocal.h" + +size_t +mbsnrtowcs_l(wchar_t * __restrict dst, const char ** __restrict src, + size_t nms, size_t len, mbstate_t * __restrict ps, locale_t locale) +{ + FIX_LOCALE(locale); + if (ps == NULL) + ps = &locale->mbsnrtowcs; + return (XLOCALE_CTYPE(locale)->__mbsnrtowcs(dst, src, nms, len, ps)); +} +size_t +mbsnrtowcs(wchar_t * __restrict dst, const char ** __restrict src, + size_t nms, size_t len, mbstate_t * __restrict ps) +{ + return mbsnrtowcs_l(dst, src, nms, len, ps, __get_locale()); +} + +size_t +__mbsnrtowcs_std(wchar_t * __restrict dst, const char ** __restrict src, + size_t nms, size_t len, mbstate_t * __restrict ps) +{ + const char *s; + size_t nchr; + wchar_t wc; + size_t nb; + struct xlocale_ctype *ct = XLOCALE_CTYPE(__get_locale()); + + s = *src; + nchr = 0; + + if (dst == NULL) { + for (;;) { + if ((nb = ct->__mbrtowc(&wc, s, nms, ps)) == (size_t)-1) + /* Invalid sequence - mbrtowc() sets errno. */ + return ((size_t)-1); + else if (nb == 0 || nb == (size_t)-2) + return (nchr); + s += nb; + nms -= nb; + nchr++; + } + /*NOTREACHED*/ + } + + while (len-- > 0) { + if ((nb = ct->__mbrtowc(dst, s, nms, ps)) == (size_t)-1) { + *src = s; + return ((size_t)-1); + } else if (nb == (size_t)-2) { + *src = s + nms; + return (nchr); + } else if (nb == 0) { + *src = NULL; + return (nchr); + } + s += nb; + nms -= nb; + nchr++; + dst++; + } + *src = s; + return (nchr); +} |