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 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 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 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 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 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