projects / dragonfly.git / blame
| Commit | Line | Data |
|---|---|---|
| 2c872e05 | 1 | /* @(#)wwinschar.c 8.1 (Berkeley) 6/6/93 */ |
| abecab39 SW |
2 | /* $NetBSD: wwinschar.c,v 1.7 2003/08/07 11:17:40 agc Exp $ */ |
| 3 | ||
| 984263bc MD |
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. | |
| abecab39 | 19 | * 3. Neither the name of the University nor the names of its contributors |
| 984263bc MD |
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 | ||
| 984263bc MD |
36 | #include "ww.h" |
| 37 | #include "tt.h" | |
| abecab39 | 38 | #include "xx.h" |
| 984263bc | 39 | |
| abecab39 SW |
40 | void |
| 41 | wwinschar(struct ww *w, int row, int col, char c, char m) | |
| 984263bc | 42 | { |
| abecab39 | 43 | int i; |
| 984263bc MD |
44 | int nvis; |
| 45 | short x = c | m << WWC_MSHIFT; | |
| 46 | ||
| 47 | /* | |
| 48 | * First, shift the line. | |
| 49 | */ | |
| 50 | { | |
| abecab39 | 51 | union ww_char *p, *q; |
| 984263bc MD |
52 | |
| 53 | p = &w->ww_buf[row][w->ww_b.r]; | |
| 54 | q = p - 1; | |
| 55 | for (i = w->ww_b.r - col; --i > 0;) | |
| 56 | *--p = *--q; | |
| 57 | q->c_w = x; | |
| 58 | } | |
| 59 | ||
| 60 | /* | |
| 61 | * If can't see it, just return. | |
| 62 | */ | |
| 63 | if (row < w->ww_i.t || row >= w->ww_i.b | |
| 64 | || w->ww_i.r <= 0 || w->ww_i.r <= col) | |
| 65 | return; | |
| 66 | ||
| 67 | if (col < w->ww_i.l) | |
| 68 | col = w->ww_i.l; | |
| 69 | ||
| 70 | /* | |
| 71 | * Now find out how much is actually changed, and fix wwns. | |
| 72 | */ | |
| 73 | { | |
| abecab39 SW |
74 | union ww_char *buf; |
| 75 | char *win; | |
| 76 | union ww_char *ns; | |
| 77 | unsigned char *smap; | |
| 984263bc MD |
78 | char touched; |
| 79 | ||
| 80 | nvis = 0; | |
| 81 | smap = &wwsmap[row][col]; | |
| 82 | for (i = col; i < w->ww_i.r && *smap++ != w->ww_index; i++) | |
| 83 | ; | |
| 84 | if (i >= w->ww_i.r) | |
| 85 | return; | |
| 86 | col = i; | |
| 87 | buf = w->ww_buf[row]; | |
| 88 | win = w->ww_win[row]; | |
| 89 | ns = wwns[row]; | |
| 90 | smap = &wwsmap[row][i]; | |
| 91 | touched = wwtouched[row]; | |
| 92 | for (; i < w->ww_i.r; i++) { | |
| 93 | if (*smap++ != w->ww_index) | |
| 94 | continue; | |
| 95 | touched |= WWU_TOUCHED; | |
| 96 | if (win[i]) | |
| 97 | ns[i].c_w = | |
| 98 | buf[i].c_w ^ win[i] << WWC_MSHIFT; | |
| 99 | else { | |
| 100 | nvis++; | |
| 101 | ns[i] = buf[i]; | |
| 102 | } | |
| 103 | } | |
| 104 | wwtouched[row] = touched; | |
| 105 | } | |
| 106 | ||
| 107 | /* | |
| 108 | * Can/Should we use delete character? | |
| 109 | */ | |
| 110 | if ((tt.tt_inschar || tt.tt_insspace) && nvis > (wwncol - col) / 2) { | |
| abecab39 | 111 | union ww_char *p, *q; |
| 984263bc MD |
112 | |
| 113 | if (tt.tt_inschar) | |
| 114 | xxinschar(row, col, c, m); | |
| 115 | else { | |
| 116 | xxinsspace(row, col); | |
| 117 | x = ' '; | |
| 118 | } | |
| 119 | p = &wwos[row][wwncol]; | |
| 120 | q = p - 1; | |
| 121 | for (i = wwncol - col; --i > 0;) | |
| 122 | *--p = *--q; | |
| 123 | q->c_w = x; | |
| 124 | } | |
| 125 | } |