## root/libglibc/snprintf.c(264.html)

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## DEFINITIONS

This source file includes following definitions.

1. snprintf

    /* Copyright (C) 1991, 1995, 1997, 1998 Free Software Foundation, Inc.
       This file is part of the GNU C Library.

       The GNU C Library is free software; you can redistribute it and/or
       modify it under the terms of the GNU Library General Public License as
       published by the Free Software Foundation; either version 2 of the
       License, or (at your option) any later version.

       The GNU C Library is distributed in the hope that it will be useful,
       but WITHOUT ANY WARRANTY; without even the implied warranty of
       MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
       Library General Public License for more details.

       You should have received a copy of the GNU Library General Public
       License along with the GNU C Library; see the file COPYING.LIB.  If not,
       write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
       Boston, MA  02110-1301  USA. */

    #ifdef HAVE_CONFIG_H
    #include <config.h>
    #endif
    #include <stdarg.h>
    #include <stdio.h>

    /*
     * drived from GNU C Library and modified at 2001/10/09.
     *
     * This is the simplest version of snprintf, that is, it just exits after
     * writing over MAXLEN characters. It is used in the system which doesn't
     * have snprintf(3).
     */

    #ifndef HAVE_SNPRINTF
    /* Write formatted output into S, according to the format
       string FORMAT, writing no more than MAXLEN characters.  */
    /* VARARGS3 */
    int
    snprintf (char *s, size_t maxlen, const char *format, ...)
    {
      va_list arg;
      int done;

      va_start (arg, format);
    /*  done = __vsnprintf (s, maxlen, format, arg); */
      done = vsprintf (s, format, arg);
      if (done >= maxlen) {
        fprintf(stderr, "This program exit because vsprintf(3) destroy memory.\n");
        fprintf(stderr, "You should install snprintf(3) instead.\n");
        exit(1);
      }
      va_end (arg);

      return done;
    }
    #endif /* HAVE_SNPRINTF */

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