kolibrios-gitea/drivers/ddk/stdio/vsprintf.c
Sergey Semyonov (Serge) 1402c59305 ddk: tiny libc and kernel imports library
git-svn-id: svn://kolibrios.org@1408 a494cfbc-eb01-0410-851d-a64ba20cac60
2010-02-12 20:11:35 +00:00

38 lines
791 B
C

/*
* vsprintf - print formatted output without ellipsis on an array
*/
/* $Header$ */
#include "stdio.h"
#include <stdarg.h>
#include <limits.h>
#include "loc_incl.h"
#define putc(c, p) (--(p)->_count >= 0 ? \
(int) (*(p)->_ptr++ = (c)) : EOF)
int
vsnprintf(char *s, unsigned n, const char *format, va_list arg)
{
int retval;
FILE tmp_stream;
tmp_stream._fd = -1;
tmp_stream._flags = _IOWRITE + _IONBF + _IOWRITING;
tmp_stream._buf = (unsigned char *) s;
tmp_stream._ptr = (unsigned char *) s;
tmp_stream._count = n-1;
retval = _doprnt(format, arg, &tmp_stream);
tmp_stream._count = 1;
putc('\0',&tmp_stream);
return retval;
}
int
vsprintf(char *s, const char *format, va_list arg)
{
return vsnprintf(s, INT_MAX, format, arg);
}