use <stdarg.h> or misuse <varargs.h> depending on __STDC__;

[unix-history] / usr / src / lib / libcurses / printw.c

/*
* Copyright (c) 1981 Regents of the University of California.
* All rights reserved.
*
* %sccs.include.redist.c%
*/

#ifndef lint
static char sccsid[] = "@(#)printw.c    5.8 (Berkeley) %G%";
#endif /* not lint */

/*
* printw and friends.
*
* These routines make nonportable assumptions about varargs if __STDC__
* is not in effect.
*/

#if __STDC__
#include <stdarg.h>
#else
#include <varargs.h>
#endif
#include "curses.ext"

/*
*      This routine implements a printf on the standard screen.
*/
#if __STDC__
printw(const char *fmt, ...)
#else
printw(fmt, va_alist)
       char *fmt;
       va_dcl
#endif
{
       va_list ap;
       int     ret;

#if __STDC__
       va_start(ap, fmt);
#else
       va_start(ap);
#endif
       ret = _sprintw(stdscr, fmt, ap);
       va_end(ap);
       return (ret);
}

/*
*      This routine implements a printf on the given window.
*/
#if __STDC__
wprintw(WINDOW *win, const char *fmt, ...)
#else
wprintw(win, fmt, va_alist)
       WINDOW *win;
       char *fmt;
       va_dcl
#endif
{
       va_list ap;
       int     ret;

#ifdef __STDC__
       va_start(ap, fmt);
#else
       va_start(ap);
#endif
       ret = _sprintw(win, fmt, ap);
       va_end(ap);
       return (ret);
}

/*
*      Internal write-buffer-to-window function.
*/
static int
_winwrite(cookie, buf, n)
       void *cookie;
       register char *buf;
       int n;
{
       register WINDOW *win = (WINDOW *)cookie;
       register int c = n;

       while (--c >= 0) {
               if (waddch(win, *buf++) == ERR)
                       return (-1);
       }
       return n;
}

/*
*      This routine actually executes the printf and adds it to the window.
*      It must not be declared static as it is used in mvprintw.c.
*      THIS SHOULD BE RENAMED vwprintw AND EXPORTED
*/
_sprintw(win, fmt, ap)
       WINDOW *win;
#if __STDC__
       const char *fmt;
#else
       char *fmt;
#endif
       va_list ap;
{
       FILE *f;

       if ((f = fwopen((void *)win, _winwrite)) == NULL)
               return ERR;
       (void) vfprintf(f, fmt, ap);
       return fclose(f) ? ERR : OK;
}