diff options
Diffstat (limited to 'lib/libc/stdio/snprintf.c')
| -rw-r--r-- | lib/libc/stdio/snprintf.c | 105 |
1 files changed, 105 insertions, 0 deletions
diff --git a/lib/libc/stdio/snprintf.c b/lib/libc/stdio/snprintf.c new file mode 100644 index 0000000..e2dd2dd --- /dev/null +++ b/lib/libc/stdio/snprintf.c @@ -0,0 +1,105 @@ +/*- + * Copyright (c) 1990, 1993 + * The Regents of the University of California. All rights reserved. + * + * Copyright (c) 2011 The FreeBSD Foundation + * All rights reserved. + * Portions of this software were developed by David Chisnall + * under sponsorship from the FreeBSD Foundation. + * + * This code is derived from software contributed to Berkeley by + * Chris Torek. + * + * 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. 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[] = "@(#)snprintf.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 <stdio.h> +#include <stdarg.h> +#include "xlocale_private.h" + +#include "local.h" + +int +snprintf(char * __restrict str, size_t n, char const * __restrict fmt, ...) +{ + size_t on; + int ret; + va_list ap; + FILE f = FAKE_FILE; + + on = n; + if (n != 0) + n--; + if (n > INT_MAX) { + errno = EOVERFLOW; + *str = '\0'; + return (EOF); + } + va_start(ap, fmt); + f._flags = __SWR | __SSTR; + f._bf._base = f._p = (unsigned char *)str; + f._bf._size = f._w = n; + ret = __vfprintf(&f, __get_locale(), fmt, ap); + if (on > 0) + *f._p = '\0'; + va_end(ap); + return (ret); +} +int +snprintf_l(char * __restrict str, size_t n, locale_t locale, + char const * __restrict fmt, ...) +{ + size_t on; + int ret; + va_list ap; + FILE f = FAKE_FILE; + FIX_LOCALE(locale); + + on = n; + if (n != 0) + n--; + if (n > INT_MAX) { + errno = EOVERFLOW; + *str = '\0'; + return (EOF); + } + va_start(ap, fmt); + f._flags = __SWR | __SSTR; + f._bf._base = f._p = (unsigned char *)str; + f._bf._size = f._w = n; + ret = __vfprintf(&f, locale, fmt, ap); + if (on > 0) + *f._p = '\0'; + va_end(ap); + return (ret); +} |
