diff options
Diffstat (limited to 'usr/src/lib/libast/common/stdio/vsnprintf.c')
| -rw-r--r-- | usr/src/lib/libast/common/stdio/vsnprintf.c | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/usr/src/lib/libast/common/stdio/vsnprintf.c b/usr/src/lib/libast/common/stdio/vsnprintf.c new file mode 100644 index 0000000000..b551a07a16 --- /dev/null +++ b/usr/src/lib/libast/common/stdio/vsnprintf.c @@ -0,0 +1,55 @@ +/*********************************************************************** +* * +* This software is part of the ast package * +* Copyright (c) 1985-2007 AT&T Knowledge Ventures * +* and is licensed under the * +* Common Public License, Version 1.0 * +* by AT&T Knowledge Ventures * +* * +* A copy of the License is available at * +* http://www.opensource.org/licenses/cpl1.0.txt * +* (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) * +* * +* Information and Software Systems Research * +* AT&T Research * +* Florham Park NJ * +* * +* Glenn Fowler <gsf@research.att.com> * +* David Korn <dgk@research.att.com> * +* Phong Vo <kpv@research.att.com> * +* * +***********************************************************************/ +#pragma prototyped + +#include "stdhdr.h" + +int +vsnprintf(char* s, int n, const char* fmt, va_list args) +{ + Sfio_t f; + int v; + + if (!s) + return -1; + + /* + * make a fake stream + */ + + SFCLEAR(&f, NiL); + f.flags = SF_STRING|SF_WRITE; + f.bits = SF_PRIVATE; + f.mode = SF_WRITE; + f.size = n - 1; + f.data = f.next = f.endr = (uchar*)s; + f.endb = f.endw = f.data + f.size; + + /* + * call and fix up + */ + + v = sfvprintf(&f, fmt, args); + *f.next = 0; + _Sfi = f.next - f.data; + return v; +} |