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printw.c revision 1.22 
      1 /*	$NetBSD: printw.c,v 1.22 2011/07/17 20:54:34 joerg Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1981, 1993, 1994
      5  *	The Regents of the University of California.  All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. Neither the name of the University nor the names of its contributors
     16  *    may be used to endorse or promote products derived from this software
     17  *    without specific prior written permission.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     29  * SUCH DAMAGE.
     30  */
     31 
     32 #include <sys/cdefs.h>
     33 #ifndef lint
     34 #if 0
     35 static char sccsid[] = "@(#)printw.c	8.3 (Berkeley) 5/4/94";
     36 #else
     37 __RCSID("$NetBSD: printw.c,v 1.22 2011/07/17 20:54:34 joerg Exp $");
     38 #endif
     39 #endif				/* not lint */
     40 
     41 #include <stdarg.h>
     42 
     43 #include "curses.h"
     44 #include "curses_private.h"
     45 
     46 /*
     47  * printw and friends.
     48  */
     49 
     50 static int __winwrite __P((void *, const char *, int));
     51 
     52 /*
     53  * printw --
     54  *	Printf on the standard screen.
     55  */
     56 int
     57 printw(const char *fmt,...)
     58 {
     59 	va_list ap;
     60 	int     ret;
     61 
     62 	va_start(ap, fmt);
     63 	ret = vw_printw(stdscr, fmt, ap);
     64 	va_end(ap);
     65 	return (ret);
     66 }
     67 /*
     68  * wprintw --
     69  *	Printf on the given window.
     70  */
     71 int
     72 wprintw(WINDOW *win, const char *fmt,...)
     73 {
     74 	va_list ap;
     75 	int     ret;
     76 
     77 	va_start(ap, fmt);
     78 	ret = vw_printw(win, fmt, ap);
     79 	va_end(ap);
     80 	return (ret);
     81 }
     82 /*
     83  * mvprintw, mvwprintw --
     84  *	Implement the mvprintw commands.  Due to the variable number of
     85  *	arguments, they cannot be macros.  Sigh....
     86  */
     87 int
     88 mvprintw(int y, int x, const char *fmt,...)
     89 {
     90 	va_list ap;
     91 	int     ret;
     92 
     93 	if (move(y, x) != OK)
     94 		return (ERR);
     95 	va_start(ap, fmt);
     96 	ret = vw_printw(stdscr, fmt, ap);
     97 	va_end(ap);
     98 	return (ret);
     99 }
    100 
    101 int
    102 mvwprintw(WINDOW * win, int y, int x, const char *fmt,...)
    103 {
    104 	va_list ap;
    105 	int     ret;
    106 
    107 	if (wmove(win, y, x) != OK)
    108 		return (ERR);
    109 
    110 	va_start(ap, fmt);
    111 	ret = vw_printw(win, fmt, ap);
    112 	va_end(ap);
    113 	return (ret);
    114 }
    115 /*
    116  * Internal write-buffer-to-window function.
    117  */
    118 static int
    119 __winwrite(cookie, buf, n)
    120 	void   *cookie;
    121 	const char *buf;
    122 	int     n;
    123 {
    124 	WINDOW *win;
    125 	int     c;
    126 
    127 	for (c = n, win = cookie; --c >= 0;)
    128 	{
    129 #ifdef DEBUG
    130 		__CTRACE(__CTRACE_MISC, "__winwrite: %c\n", *buf);
    131 #endif
    132 		if (waddch(win, (chtype) (*buf++ & __CHARTEXT)) == ERR)
    133 			return (-1);
    134 	}
    135 	return (n);
    136 }
    137 /*
    138  * vw_printw --
    139  *	This routine actually executes the printf and adds it to the window.
    140  */
    141 int
    142 vw_printw(WINDOW *win, const char *fmt, va_list ap)
    143 {
    144 	FILE   *f;
    145 
    146 	if ((f = funopen(win, NULL, __winwrite, NULL, NULL)) == NULL)
    147 		return (ERR);
    148 	(void) vfprintf(f, fmt, ap);
    149 	return (fclose(f) ? ERR : OK);
    150 }
    151 
    152 __strong_alias(vwprintw, vw_printw)
    153