1 /* $NetBSD: printw.c,v 1.31 2024/12/23 02:58:04 blymn 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 1.31 2024/12/23 02:58:04 blymn 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 /*
51 * printw --
52 * Printf on the standard screen.
53 */
54 int
printw(const char * fmt,...)55 printw(const char *fmt,...)
56 {
57 va_list ap;
58 int ret;
59
60 va_start(ap, fmt);
61 ret = vw_printw(stdscr, fmt, ap);
62 va_end(ap);
63 return ret;
64 }
65 /*
66 * wprintw --
67 * Printf on the given window.
68 */
69 int
wprintw(WINDOW * win,const char * fmt,...)70 wprintw(WINDOW *win, const char *fmt,...)
71 {
72 va_list ap;
73 int ret;
74
75 if (__predict_false(win == NULL))
76 return ERR;
77
78 va_start(ap, fmt);
79 ret = vw_printw(win, fmt, ap);
80 va_end(ap);
81 return ret;
82 }
83 /*
84 * mvprintw, mvwprintw --
85 * Implement the mvprintw commands. Due to the variable number of
86 * arguments, they cannot be macros. Sigh....
87 */
88 int
mvprintw(int y,int x,const char * fmt,...)89 mvprintw(int y, int x, const char *fmt,...)
90 {
91 va_list ap;
92 int ret;
93
94 if (move(y, x) != OK)
95 return ERR;
96 va_start(ap, fmt);
97 ret = vw_printw(stdscr, fmt, ap);
98 va_end(ap);
99 return ret;
100 }
101
102 int
mvwprintw(WINDOW * win,int y,int x,const char * fmt,...)103 mvwprintw(WINDOW * win, int y, int x, const char *fmt,...)
104 {
105 va_list ap;
106 int ret;
107
108 if (wmove(win, y, x) != OK)
109 return ERR;
110
111 va_start(ap, fmt);
112 ret = vw_printw(win, fmt, ap);
113 va_end(ap);
114 return ret;
115 }
116
117 /*
118 * vw_printw --
119 * This routine actually executes the printf and adds it to the window.
120 */
121 int
vw_printw(WINDOW * win,const char * fmt,va_list ap)122 vw_printw(WINDOW *win, const char *fmt, va_list ap)
123 {
124 int n;
125
126 __CTRACE(__CTRACE_INPUT, "vw_printw: win %p\n", win);
127
128 if (__predict_false(win == NULL))
129 return ERR;
130
131 if (win->fp == NULL) {
132 win->fp = open_memstream(&win->buf, &win->buflen);
133 if (__predict_false(win->fp == NULL))
134 return ERR;
135 } else
136 rewind(win->fp);
137
138 n = vfprintf(win->fp, fmt, ap);
139 if (__predict_false(n == 0))
140 return OK;
141 if (__predict_false(n == -1))
142 return ERR;
143 if (__predict_false(fflush(win->fp) != 0))
144 return ERR;
145 return waddnstr(win, win->buf, n);
146 }
147
148 __strong_alias(vwprintw, vw_printw)
149