1 /* $NetBSD: printw.c,v 1.29 2019/06/09 07:40:14 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 1.29 2019/06/09 07:40:14 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 va_start(ap, fmt); 76 ret = vw_printw(win, fmt, ap); 77 va_end(ap); 78 return ret; 79 } 80 /* 81 * mvprintw, mvwprintw -- 82 * Implement the mvprintw commands. Due to the variable number of 83 * arguments, they cannot be macros. Sigh.... 84 */ 85 int 86 mvprintw(int y, int x, const char *fmt,...) 87 { 88 va_list ap; 89 int ret; 90 91 if (move(y, x) != OK) 92 return ERR; 93 va_start(ap, fmt); 94 ret = vw_printw(stdscr, fmt, ap); 95 va_end(ap); 96 return ret; 97 } 98 99 int 100 mvwprintw(WINDOW * win, int y, int x, const char *fmt,...) 101 { 102 va_list ap; 103 int ret; 104 105 if (wmove(win, y, x) != OK) 106 return ERR; 107 108 va_start(ap, fmt); 109 ret = vw_printw(win, fmt, ap); 110 va_end(ap); 111 return ret; 112 } 113 114 /* 115 * vw_printw -- 116 * This routine actually executes the printf and adds it to the window. 117 */ 118 int 119 vw_printw(WINDOW *win, const char *fmt, va_list ap) 120 { 121 int n; 122 123 if (win->fp == NULL) { 124 win->fp = open_memstream(&win->buf, &win->buflen); 125 if (__predict_false(win->fp == NULL)) 126 return ERR; 127 } else 128 rewind(win->fp); 129 130 n = vfprintf(win->fp, fmt, ap); 131 if (__predict_false(n == 0)) 132 return OK; 133 if (__predict_false(n == -1)) 134 return ERR; 135 if (__predict_false(fflush(win->fp) != 0)) 136 return ERR; 137 return waddnstr(win, win->buf, n); 138 } 139 140 __strong_alias(vwprintw, vw_printw) 141