1 /* 2 * Copyright (c) 1983, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * Edward Wang at The University of California, Berkeley. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the University of 19 * California, Berkeley and its contributors. 20 * 4. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * @(#)wwdelline.c 8.1 (Berkeley) 6/6/93 37 * $FreeBSD: src/usr.bin/window/wwdelline.c,v 1.1.1.1.14.1 2001/05/17 09:45:01 obrien Exp $ 38 * $DragonFly: src/usr.bin/window/wwdelline.c,v 1.2 2003/06/17 04:29:34 dillon Exp $ 39 */ 40 41 #include "ww.h" 42 43 wwdelline(w, row) 44 register struct ww *w; 45 int row; 46 { 47 register i; 48 register union ww_char **cpp, **cqq; 49 register union ww_char *cp; 50 int row1, row2; 51 char deleted; 52 int visible; 53 54 /* 55 * Scroll first. 56 */ 57 if ((row1 = row) < w->ww_i.t) { 58 row1 = w->ww_i.t; 59 } 60 if ((row2 = w->ww_b.b) > w->ww_i.b) { 61 row2 = w->ww_i.b; 62 visible = 0; 63 } else 64 visible = 1; 65 deleted = wwscroll1(w, row1, row2, 1, visible); 66 67 /* 68 * Fix the buffer. 69 * But leave clearing the last line for wwclreol(). 70 */ 71 cpp = &w->ww_buf[row]; 72 cqq = cpp + 1; 73 cp = *cpp; 74 for (i = w->ww_b.b - row; --i > 0;) 75 *cpp++ = *cqq++; 76 *cpp = cp; 77 78 /* 79 * Now clear the last line. 80 */ 81 if (visible) 82 wwclreol1(w, w->ww_b.b - 1, w->ww_b.l, deleted); 83 else { 84 cp += w->ww_b.l; 85 for (i = w->ww_b.nc; --i >= 0;) 86 cp++->c_w = ' '; 87 } 88 } 89