1 /* $NetBSD: delch.c,v 1.17 2004/01/20 08:28:26 wiz 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[] = "@(#)delch.c 8.2 (Berkeley) 5/4/94"; 36 #else 37 __RCSID("$NetBSD: delch.c,v 1.17 2004/01/20 08:28:26 wiz Exp $"); 38 #endif 39 #endif /* not lint */ 40 41 #include <string.h> 42 43 #include "curses.h" 44 #include "curses_private.h" 45 46 #ifndef _CURSES_USE_MACROS 47 /* 48 * delch -- 49 * Do a delete-char on the line, leaving (cury, curx) unchanged. 50 */ 51 int 52 delch(void) 53 { 54 return wdelch(stdscr); 55 } 56 57 /* 58 * mvdelch -- 59 * Do a delete-char on the line at (y, x) on stdscr. 60 */ 61 int 62 mvdelch(int y, int x) 63 { 64 return mvwdelch(stdscr, y, x); 65 } 66 67 /* 68 * mvwdelch -- 69 * Do a delete-char on the line at (y, x) of the given window. 70 */ 71 int 72 mvwdelch(WINDOW *win, int y, int x) 73 { 74 if (wmove(win, y, x) == ERR) 75 return ERR; 76 77 return wdelch(win); 78 } 79 80 #endif 81 82 /* 83 * wdelch -- 84 * Do a delete-char on the line, leaving (cury, curx) unchanged. 85 */ 86 int 87 wdelch(WINDOW *win) 88 { 89 __LDATA *end, *temp1, *temp2; 90 91 end = &win->lines[win->cury]->line[win->maxx - 1]; 92 temp1 = &win->lines[win->cury]->line[win->curx]; 93 temp2 = temp1 + 1; 94 while (temp1 < end) { 95 (void) memcpy(temp1, temp2, sizeof(__LDATA)); 96 temp1++, temp2++; 97 } 98 temp1->ch = ' '; 99 temp1->bch = win->bch; 100 temp1->attr = 0; 101 temp1->battr = win->battr; 102 __touchline(win, (int) win->cury, (int) win->curx, (int) win->maxx - 1); 103 return (OK); 104 } 105