erase.c revision 1.7.2.2
1 1.7.2.2 cgd /* 2 1.7.2.2 cgd * Copyright (c) 1981, 1993, 1994 3 1.7.2.2 cgd * The Regents of the University of California. All rights reserved. 4 1.7.2.2 cgd * 5 1.7.2.2 cgd * Redistribution and use in source and binary forms, with or without 6 1.7.2.2 cgd * modification, are permitted provided that the following conditions 7 1.7.2.2 cgd * are met: 8 1.7.2.2 cgd * 1. Redistributions of source code must retain the above copyright 9 1.7.2.2 cgd * notice, this list of conditions and the following disclaimer. 10 1.7.2.2 cgd * 2. Redistributions in binary form must reproduce the above copyright 11 1.7.2.2 cgd * notice, this list of conditions and the following disclaimer in the 12 1.7.2.2 cgd * documentation and/or other materials provided with the distribution. 13 1.7.2.2 cgd * 3. All advertising materials mentioning features or use of this software 14 1.7.2.2 cgd * must display the following acknowledgement: 15 1.7.2.2 cgd * This product includes software developed by the University of 16 1.7.2.2 cgd * California, Berkeley and its contributors. 17 1.7.2.2 cgd * 4. Neither the name of the University nor the names of its contributors 18 1.7.2.2 cgd * may be used to endorse or promote products derived from this software 19 1.7.2.2 cgd * without specific prior written permission. 20 1.7.2.2 cgd * 21 1.7.2.2 cgd * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 1.7.2.2 cgd * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 1.7.2.2 cgd * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 1.7.2.2 cgd * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 1.7.2.2 cgd * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 1.7.2.2 cgd * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 1.7.2.2 cgd * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 1.7.2.2 cgd * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 1.7.2.2 cgd * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 1.7.2.2 cgd * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 1.7.2.2 cgd * SUCH DAMAGE. 32 1.7.2.2 cgd */ 33 1.7.2.2 cgd 34 1.7.2.2 cgd #ifndef lint 35 1.7.2.2 cgd static char sccsid[] = "@(#)erase.c 8.2 (Berkeley) 5/4/94"; 36 1.7.2.2 cgd #endif /* not lint */ 37 1.7.2.2 cgd 38 1.7.2.2 cgd #include "curses.h" 39 1.7.2.2 cgd 40 1.7.2.2 cgd /* 41 1.7.2.2 cgd * werase -- 42 1.7.2.2 cgd * Erases everything on the window. 43 1.7.2.2 cgd */ 44 1.7.2.2 cgd int 45 1.7.2.2 cgd werase(win) 46 1.7.2.2 cgd register WINDOW *win; 47 1.7.2.2 cgd { 48 1.7.2.2 cgd 49 1.7.2.2 cgd register int minx, y; 50 1.7.2.2 cgd register __LDATA *sp, *end, *start, *maxx; 51 1.7.2.2 cgd 52 1.7.2.2 cgd #ifdef DEBUG 53 1.7.2.2 cgd __CTRACE("werase: (%0.2o)\n", win); 54 1.7.2.2 cgd #endif 55 1.7.2.2 cgd for (y = 0; y < win->maxy; y++) { 56 1.7.2.2 cgd minx = -1; 57 1.7.2.2 cgd start = win->lines[y]->line; 58 1.7.2.2 cgd end = &start[win->maxx]; 59 1.7.2.2 cgd for (sp = start; sp < end; sp++) 60 1.7.2.2 cgd if (sp->ch != ' ' || sp->attr != 0) { 61 1.7.2.2 cgd maxx = sp; 62 1.7.2.2 cgd if (minx == -1) 63 1.7.2.2 cgd minx = sp - start; 64 1.7.2.2 cgd sp->ch = ' '; 65 1.7.2.2 cgd sp->attr = 0; 66 1.7.2.2 cgd } 67 1.7.2.2 cgd if (minx != -1) 68 1.7.2.2 cgd __touchline(win, y, minx, maxx - win->lines[y]->line, 69 1.7.2.2 cgd 0); 70 1.7.2.2 cgd } 71 1.7.2.2 cgd return (OK); 72 1.7.2.2 cgd } 73
Indexes created Tue Sep 30 17:09:57 GMT 2025