| | 1 | /* @(#)wwinsline.c 8.1 (Berkeley) 6/6/93 */ |
| | 2 | /* $NetBSD: wwinsline.c,v 1.6 2003/08/07 11:17:40 agc Exp $ */ |
| | 3 | |
| | 4 | /* |
| | 5 | * Copyright (c) 1983, 1993 |
| | 6 | * The Regents of the University of California. All rights reserved. |
| | 7 | * |
| | 8 | * This code is derived from software contributed to Berkeley by |
| | 9 | * Edward Wang at The University of California, Berkeley. |
| | 10 | * |
| | 11 | * Redistribution and use in source and binary forms, with or without |
| | 12 | * modification, are permitted provided that the following conditions |
| | 13 | * are met: |
| | 14 | * 1. Redistributions of source code must retain the above copyright |
| | 15 | * notice, this list of conditions and the following disclaimer. |
| | 16 | * 2. Redistributions in binary form must reproduce the above copyright |
| | 17 | * notice, this list of conditions and the following disclaimer in the |
| | 18 | * documentation and/or other materials provided with the distribution. |
| | 19 | * 3. Neither the name of the University nor the names of its contributors |
| | 20 | * may be used to endorse or promote products derived from this software |
| | 21 | * without specific prior written permission. |
| | 22 | * |
| | 23 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| | 24 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| | 25 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| | 26 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| | 27 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| | 28 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| | 29 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| | 30 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| | 31 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| | 32 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| | 33 | * SUCH DAMAGE. |
| | 34 | */ |
| | 35 | |
| | 36 | #include "ww.h" |
| | 37 | |
| | 38 | void |
| | 39 | wwinsline(struct ww *w, int row) |
| | 40 | { |
| | 41 | int i; |
| | 42 | union ww_char **cpp, **cqq; |
| | 43 | union ww_char *cp; |
| | 44 | int row1, row2; |
| | 45 | char deleted; |
| | 46 | int visible; |
| | 47 | |
| | 48 | /* |
| | 49 | * Scroll first. |
| | 50 | */ |
| | 51 | if ((row1 = row) < w->ww_i.t) { |
| | 52 | row1 = w->ww_i.t; |
| | 53 | visible = 0; |
| | 54 | } else |
| | 55 | visible = 1; |
| | 56 | if ((row2 = w->ww_b.b) > w->ww_i.b) { |
| | 57 | row2 = w->ww_i.b; |
| | 58 | } |
| | 59 | deleted = wwscroll1(w, row1, row2, -1, visible); |
| | 60 | |
| | 61 | /* |
| | 62 | * Fix the buffer. |
| | 63 | * But leave clearing the last line for wwclreol(). |
| | 64 | */ |
| | 65 | cpp = &w->ww_buf[w->ww_b.b]; |
| | 66 | cqq = cpp - 1; |
| | 67 | cp = *cqq; |
| | 68 | for (i = w->ww_b.b - row; --i > 0;) |
| | 69 | *--cpp = *--cqq; |
| | 70 | *cqq = cp; |
| | 71 | |
| | 72 | /* |
| | 73 | * Now clear the last line. |
| | 74 | */ |
| | 75 | if (visible) |
| | 76 | wwclreol1(w, row, w->ww_b.l, deleted); |
| | 77 | else { |
| | 78 | cp += w->ww_b.l; |
| | 79 | for (i = w->ww_b.nc; --i >= 0;) |
| | 80 | cp++->c_w = ' '; |
| | 81 | } |
| | 82 | } |
projects / dragonfly.git / blame_incremental