osdStdio.c

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/* osdStdio.c */
/*************************************************************************\
* Copyright (c) 2008 UChicago Argonne LLC, as Operator of Argonne
*     National Laboratory.
* Copyright (c) 2002 The Regents of the University of California, as
*     Operator of Los Alamos National Laboratory.
* EPICS BASE is distributed subject to a Software License Agreement found
* in file LICENSE that is included with this distribution.
\*************************************************************************/

#include <stdio.h>
#include <stdarg.h>

#ifndef _MSC_VER
/* Older versions of MinGW omitted this prototype from stdio.h */
_CRTIMP int __cdecl __MINGW_NOTHROW _vscprintf (const char*, va_list);
#endif

#include "epicsStdio.h"

int epicsStdCall epicsVsnprintf(char *str, size_t len,
    const char *fmt, va_list ap)
{
    int retval = _vsnprintf(str, len, fmt, ap);
    int needed = _vscprintf(fmt, ap);

    if ((int) len < needed + 1) {
        str[len - 1] = 0;
        return needed;
    }

    return retval;
}

int epicsStdCall epicsSnprintf (char *str, size_t len, const char *fmt, ...)
{
    int rtn;
    va_list pvar;

    va_start (pvar, fmt);
    rtn = epicsVsnprintf (str, len, fmt, pvar);
    va_end (pvar);
    return (rtn);
}