Commit | Line | Data |
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7c1c9e39 | 1 | #ifndef lint |
60de5df9 | 2 | static char sccsid[] = "@(#)wwadd.c 3.9 %G%"; |
7c1c9e39 EW |
3 | #endif |
4 | ||
60de5df9 EW |
5 | /* |
6 | * Copyright (c) 1983 Regents of the University of California, | |
7 | * All rights reserved. Redistribution permitted subject to | |
8 | * the terms of the Berkeley Software License Agreement. | |
9 | */ | |
10 | ||
7c1c9e39 EW |
11 | #include "ww.h" |
12 | ||
13 | /* | |
84ad208b | 14 | * Stick w1 behind w2. |
7c1c9e39 EW |
15 | */ |
16 | wwadd(w1, w2) | |
84ad208b EW |
17 | register struct ww *w1; |
18 | struct ww *w2; | |
7c1c9e39 | 19 | { |
84ad208b | 20 | register i; |
04d70db4 | 21 | register struct ww *w; |
19f9784c | 22 | |
7c1c9e39 EW |
23 | w1->ww_order = w2->ww_order + 1; |
24 | w1->ww_back = w2; | |
25 | w1->ww_forw = w2->ww_forw; | |
26 | w2->ww_forw->ww_back = w1; | |
27 | w2->ww_forw = w1; | |
19f9784c | 28 | |
84ad208b EW |
29 | for (w = w1->ww_forw; w != &wwhead; w = w->ww_forw) |
30 | w->ww_order++; | |
31 | for (i = w1->ww_i.t; i < w1->ww_i.b; i++) { | |
04d70db4 EW |
32 | register j; |
33 | register char *smap = wwsmap[i]; | |
34 | register char *win = w1->ww_win[i]; | |
35 | union ww_char *ns = wwns[i]; | |
36 | union ww_char *buf = w1->ww_buf[i]; | |
84ad208b | 37 | int nvis = 0; |
04d70db4 | 38 | int nchanged = 0; |
7c1c9e39 | 39 | |
84ad208b | 40 | for (j = w1->ww_i.l; j < w1->ww_i.r; j++) { |
04d70db4 EW |
41 | w = wwindex[smap[j]]; |
42 | if (w1->ww_order > w->ww_order) | |
84ad208b | 43 | continue; |
04d70db4 | 44 | if (win[j] & WWM_GLS) |
84ad208b | 45 | continue; |
84ad208b EW |
46 | if (w != &wwnobody && w->ww_win[i][j] == 0) |
47 | w->ww_nvis[i]--; | |
04d70db4 EW |
48 | smap[j] = w1->ww_index; |
49 | if (win[j] == 0) | |
84ad208b | 50 | nvis++; |
04d70db4 EW |
51 | ns[j].c_w = buf[j].c_w ^ win[j] << WWC_MSHIFT; |
52 | nchanged++; | |
7c1c9e39 | 53 | } |
04d70db4 EW |
54 | if (nchanged > 4) |
55 | wwtouched[i] |= WWU_MAJOR|WWU_TOUCHED; | |
56 | else if (nchanged > 0) | |
57 | wwtouched[i] |= WWU_TOUCHED; | |
84ad208b | 58 | w1->ww_nvis[i] = nvis; |
7c1c9e39 EW |
59 | } |
60 | } |