/* * Copyright (c) 1983 Regents of the University of California. * All rights reserved. * * This code is derived from software contributed to Berkeley by * Edward Wang at The University of California, Berkeley. * * Redistribution and use in source and binary forms are permitted provided * that: (1) source distributions retain this entire copyright notice and * comment, and (2) distributions including binaries display the following * acknowledgement: ``This product includes software developed by the * University of California, Berkeley and its contributors'' in the * documentation or other materials provided with the distribution and in * all advertising materials mentioning features or use of this software. * Neither the name of the University nor the names of its contributors may * be used to endorse or promote products derived from this software without * specific prior written permission. * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. */ #ifndef lint static char sccsid[] = "@(#)wwdelline.c 3.12 (Berkeley) 6/6/90"; #endif /* not lint */ #include "ww.h" wwdelline(w, row) register struct ww *w; int row; { register i; register union ww_char **cpp, **cqq; register union ww_char *cp; int row1, row2; char deleted; int visible; /* * Scroll first. */ if ((row1 = row) < w->ww_i.t) { row1 = w->ww_i.t; } if ((row2 = w->ww_b.b) > w->ww_i.b) { row2 = w->ww_i.b; visible = 0; } else visible = 1; deleted = wwscroll1(w, row1, row2, 1, visible); /* * Fix the buffer. * But leave clearing the last line for wwclreol(). */ cpp = &w->ww_buf[row]; cqq = cpp + 1; cp = *cpp; for (i = w->ww_b.b - row; --i > 0;) *cpp++ = *cqq++; *cpp = cp; /* * Now clear the last line. */ if (visible) wwclreol1(w, w->ww_b.b - 1, w->ww_b.l, deleted); else { cp += w->ww_b.l; for (i = w->ww_b.nc; --i >= 0;) cp++->c_w = ' '; } }