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printw.c revision 1.9
      1 /*	$NetBSD: printw.c,v 1.9 1997/07/22 07:36:56 mikel 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. All advertising materials mentioning features or use of this software
     16  *    must display the following acknowledgement:
     17  *	This product includes software developed by the University of
     18  *	California, Berkeley and its contributors.
     19  * 4. Neither the name of the University nor the names of its contributors
     20  *    may be used to endorse or promote products derived from this software
     21  *    without specific prior written permission.
     22  *
     23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     33  * SUCH DAMAGE.
     34  */
     35 
     36 #include <sys/cdefs.h>
     37 #ifndef lint
     38 #if 0
     39 static char sccsid[] = "@(#)printw.c	8.3 (Berkeley) 5/4/94";
     40 #else
     41 __RCSID("$NetBSD: printw.c,v 1.9 1997/07/22 07:36:56 mikel Exp $");
     42 #endif
     43 #endif	/* not lint */
     44 
     45 #ifdef __STDC__
     46 #include <stdarg.h>
     47 #else
     48 #include <varargs.h>
     49 #endif
     50 
     51 #include "curses.h"
     52 
     53 /*
     54  * printw and friends.
     55  *
     56  * These routines make nonportable assumptions about varargs if __STDC__
     57  * is not in effect.
     58  */
     59 
     60 static int __winwrite __P((void *, const char *, int));
     61 
     62 /*
     63  * printw --
     64  *	Printf on the standard screen.
     65  */
     66 int
     67 #ifdef __STDC__
     68 printw(const char *fmt, ...)
     69 #else
     70 printw(fmt, va_alist)
     71 	char *fmt;
     72 	va_dcl
     73 #endif
     74 {
     75 	va_list ap;
     76 	int ret;
     77 
     78 #ifdef __STDC__
     79 	va_start(ap, fmt);
     80 #else
     81 	va_start(ap);
     82 #endif
     83 	ret = vwprintw(stdscr, fmt, ap);
     84 	va_end(ap);
     85 	return (ret);
     86 }
     87 
     88 /*
     89  * wprintw --
     90  *	Printf on the given window.
     91  */
     92 int
     93 #ifdef __STDC__
     94 wprintw(WINDOW * win, const char *fmt, ...)
     95 #else
     96 wprintw(win, fmt, va_alist)
     97 	WINDOW *win;
     98 	char *fmt;
     99 	va_dcl
    100 #endif
    101 {
    102 	va_list ap;
    103 	int ret;
    104 
    105 #ifdef __STDC__
    106 	va_start(ap, fmt);
    107 #else
    108 	va_start(ap);
    109 #endif
    110 	ret = vwprintw(win, fmt, ap);
    111 	va_end(ap);
    112 	return (ret);
    113 }
    114 
    115 /*
    116  * mvprintw, mvwprintw --
    117  *	Implement the mvprintw commands.  Due to the variable number of
    118  *	arguments, they cannot be macros.  Sigh....
    119  */
    120 int
    121 #ifdef __STDC__
    122 mvprintw(register int y, register int x, const char *fmt, ...)
    123 #else
    124 mvprintw(y, x, fmt, va_alist)
    125 	register int y, x;
    126 	char *fmt;
    127 	va_dcl
    128 #endif
    129 {
    130 	va_list ap;
    131 	int ret;
    132 
    133 #ifdef __STDC__
    134 	va_start(ap, fmt);
    135 #else
    136 	va_start(ap);
    137 #endif
    138 	if (move(y, x) != OK)
    139 		return (ERR);
    140 	ret = vwprintw(stdscr, fmt, ap);
    141 	va_end(ap);
    142 	return (ret);
    143 }
    144 
    145 int
    146 #ifdef __STDC__
    147 mvwprintw(register WINDOW * win, register int y, register int x,
    148     const char *fmt, ...)
    149 #else
    150 mvwprintw(win, y, x, fmt, va_alist)
    151 	register WINDOW *win;
    152 	register int y, x;
    153 	char *fmt;
    154 	va_dcl
    155 #endif
    156 {
    157 	va_list ap;
    158 	int ret;
    159 
    160 #ifdef __STDC__
    161 	va_start(ap, fmt);
    162 #else
    163 	va_start(ap);
    164 #endif
    165 	if (wmove(win, y, x) != OK)
    166 		return (ERR);
    167 
    168 	ret = vwprintw(win, fmt, ap);
    169 	va_end(ap);
    170 	return (ret);
    171 }
    172 
    173 /*
    174  * Internal write-buffer-to-window function.
    175  */
    176 static int
    177 __winwrite(cookie, buf, n)
    178 	void *cookie;
    179 	register const char *buf;
    180 	int n;
    181 {
    182 	register WINDOW *win;
    183 	register int c;
    184 
    185 	for (c = n, win = cookie; --c >= 0;)
    186 		if (waddch(win, *buf++) == ERR)
    187 			return (-1);
    188 	return (n);
    189 }
    190 
    191 /*
    192  * vwprintw --
    193  *	This routine actually executes the printf and adds it to the window.
    194  */
    195 int
    196 vwprintw(win, fmt, ap)
    197 	WINDOW *win;
    198 	const char *fmt;
    199 	va_list ap;
    200 {
    201 	FILE *f;
    202 
    203 	if ((f = funopen(win, NULL, __winwrite, NULL, NULL)) == NULL)
    204 		return (ERR);
    205 	(void)vfprintf(f, fmt, ap);
    206 	return (fclose(f) ? ERR : OK);
    207 }
    208