diff options
| author | christos <christos@NetBSD.org> | 2005-05-14 23:51:02 +0000 |
|---|---|---|
| committer | christos <christos@NetBSD.org> | 2005-05-14 23:51:02 +0000 |
| commit | f432bbb6fd73bc9d4d16cf9c092973e4e42be033 (patch) | |
| tree | 56cbac36b68d8cb044f5972fa52a2acea82b3a69 /lib/libc/stdio/vswprintf.c | |
| parent | f023cb8f18705041e5180cb1052cdd3f01e81b9b (diff) | |
Add the missing wide char support functions from freebsd.
XXX: long double support is missing until we get gdtoa, and add the
necessary wide functions.
Diffstat (limited to 'lib/libc/stdio/vswprintf.c')
| -rw-r--r-- | lib/libc/stdio/vswprintf.c | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/lib/libc/stdio/vswprintf.c b/lib/libc/stdio/vswprintf.c new file mode 100644 index 00000000000..caa89ade73d --- /dev/null +++ b/lib/libc/stdio/vswprintf.c @@ -0,0 +1,100 @@ +/* $NetBSD: vswprintf.c,v 1.1 2005/05/14 23:51:02 christos Exp $ */ + +/* + * Copyright (c) 1997 Todd C. Miller <Todd.Miller@courtesan.com> + * 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. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED ``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 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> +#if defined(LIBC_SCCS) && !defined(lint) +#if 0 +__FBSDID("$FreeBSD: src/lib/libc/stdio/vswprintf.c,v 1.6 2005/02/21 19:41:44 fjoe Exp $"); +#else +__RCSID("$NetBSD: vswprintf.c,v 1.1 2005/05/14 23:51:02 christos Exp $"); +#endif +#endif /* LIBC_SCCS and not lint */ + +#include <errno.h> +#include <stdio.h> +#include <stdlib.h> +#include <wchar.h> +#include <stdarg.h> +#include "reentrant.h" +#include "local.h" + +int +vswprintf(wchar_t * __restrict s, size_t n, const wchar_t * __restrict fmt, + va_list ap) +{ + static const mbstate_t initial; + mbstate_t mbs; + FILE f; + char *mbp; + int ret, sverrno; + size_t nwc; + struct __sfileext fext; + + if (n == 0) { + errno = EINVAL; + return (-1); + } + + _FILEEXT_SETUP(&f, &fext); + f._file = -1; + f._flags = __SWR | __SSTR | __SALC; + f._bf._base = f._p = (unsigned char *)malloc(128); + if (f._bf._base == NULL) { + errno = ENOMEM; + return (-1); + } + f._bf._size = f._w = 127; /* Leave room for the NUL */ + ret = __vfwprintf_unlocked(&f, fmt, ap); + if (ret < 0) { + sverrno = errno; + free(f._bf._base); + errno = sverrno; + return (-1); + } + *f._p = '\0'; + mbp = (char *)f._bf._base; + /* + * XXX Undo the conversion from wide characters to multibyte that + * fputwc() did in __vfwprintf(). + */ + mbs = initial; + nwc = mbsrtowcs(s, (const char **)&mbp, n, &mbs); + free(f._bf._base); + if (nwc == (size_t)-1) { + errno = EILSEQ; + return (-1); + } + if (nwc == n) { + s[n - 1] = L'\0'; + errno = EOVERFLOW; + return (-1); + } + + return (ret); +} |
