Annotation of src/usr.bin/window/wwdelline.c, Revision 1.1
1.1 ! deraadt 1: /* $NetBSD: wwdelline.c,v 1.3 1995/09/28 10:35:24 tls Exp $ */
! 2:
! 3: /*
! 4: * Copyright (c) 1983, 1993
! 5: * The Regents of the University of California. All rights reserved.
! 6: *
! 7: * This code is derived from software contributed to Berkeley by
! 8: * Edward Wang at The University of California, Berkeley.
! 9: *
! 10: * Redistribution and use in source and binary forms, with or without
! 11: * modification, are permitted provided that the following conditions
! 12: * are met:
! 13: * 1. Redistributions of source code must retain the above copyright
! 14: * notice, this list of conditions and the following disclaimer.
! 15: * 2. Redistributions in binary form must reproduce the above copyright
! 16: * notice, this list of conditions and the following disclaimer in the
! 17: * documentation and/or other materials provided with the distribution.
! 18: * 3. All advertising materials mentioning features or use of this software
! 19: * must display the following acknowledgement:
! 20: * This product includes software developed by the University of
! 21: * California, Berkeley and its contributors.
! 22: * 4. Neither the name of the University nor the names of its contributors
! 23: * may be used to endorse or promote products derived from this software
! 24: * without specific prior written permission.
! 25: *
! 26: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
! 27: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
! 28: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 29: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
! 30: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 31: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 32: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 33: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 34: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 35: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 36: * SUCH DAMAGE.
! 37: */
! 38:
! 39: #ifndef lint
! 40: #if 0
! 41: static char sccsid[] = "@(#)wwdelline.c 8.1 (Berkeley) 6/6/93";
! 42: #else
! 43: static char rcsid[] = "$NetBSD: wwdelline.c,v 1.3 1995/09/28 10:35:24 tls Exp $";
! 44: #endif
! 45: #endif /* not lint */
! 46:
! 47: #include "ww.h"
! 48:
! 49: wwdelline(w, row)
! 50: register struct ww *w;
! 51: int row;
! 52: {
! 53: register i;
! 54: register union ww_char **cpp, **cqq;
! 55: register union ww_char *cp;
! 56: int row1, row2;
! 57: char deleted;
! 58: int visible;
! 59:
! 60: /*
! 61: * Scroll first.
! 62: */
! 63: if ((row1 = row) < w->ww_i.t) {
! 64: row1 = w->ww_i.t;
! 65: }
! 66: if ((row2 = w->ww_b.b) > w->ww_i.b) {
! 67: row2 = w->ww_i.b;
! 68: visible = 0;
! 69: } else
! 70: visible = 1;
! 71: deleted = wwscroll1(w, row1, row2, 1, visible);
! 72:
! 73: /*
! 74: * Fix the buffer.
! 75: * But leave clearing the last line for wwclreol().
! 76: */
! 77: cpp = &w->ww_buf[row];
! 78: cqq = cpp + 1;
! 79: cp = *cpp;
! 80: for (i = w->ww_b.b - row; --i > 0;)
! 81: *cpp++ = *cqq++;
! 82: *cpp = cp;
! 83:
! 84: /*
! 85: * Now clear the last line.
! 86: */
! 87: if (visible)
! 88: wwclreol1(w, w->ww_b.b - 1, w->ww_b.l, deleted);
! 89: else {
! 90: cp += w->ww_b.l;
! 91: for (i = w->ww_b.nc; --i >= 0;)
! 92: cp++->c_w = ' ';
! 93: }
! 94: }