projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 60de5df9 | 1 | /* |
| 46e9ea25 KB |
2 | * Copyright (c) 1983 Regents of the University of California. |
| 3 | * All rights reserved. | |
| 4 | * | |
| 5 | * Redistribution and use in source and binary forms are permitted | |
| 6 | * provided that this notice is preserved and that due credit is given | |
| 7 | * to the University of California at Berkeley. The name of the University | |
| 8 | * may not be used to endorse or promote products derived from this | |
| 9 | * software without specific prior written permission. This software | |
| 10 | * is provided ``as is'' without express or implied warranty. | |
| 60de5df9 EW |
11 | */ |
| 12 | ||
| 46e9ea25 KB |
13 | #ifndef lint |
| 14 | static char sccsid[] = "@(#)wwadd.c 3.10 (Berkeley) %G%"; | |
| 15 | #endif /* not lint */ | |
| 16 | ||
| 7c1c9e39 EW |
17 | #include "ww.h" |
| 18 | ||
| 19 | /* | |
| 84ad208b | 20 | * Stick w1 behind w2. |
| 7c1c9e39 EW |
21 | */ |
| 22 | wwadd(w1, w2) | |
| 84ad208b EW |
23 | register struct ww *w1; |
| 24 | struct ww *w2; | |
| 7c1c9e39 | 25 | { |
| 84ad208b | 26 | register i; |
| 04d70db4 | 27 | register struct ww *w; |
| 19f9784c | 28 | |
| 7c1c9e39 EW |
29 | w1->ww_order = w2->ww_order + 1; |
| 30 | w1->ww_back = w2; | |
| 31 | w1->ww_forw = w2->ww_forw; | |
| 32 | w2->ww_forw->ww_back = w1; | |
| 33 | w2->ww_forw = w1; | |
| 19f9784c | 34 | |
| 84ad208b EW |
35 | for (w = w1->ww_forw; w != &wwhead; w = w->ww_forw) |
| 36 | w->ww_order++; | |
| 37 | for (i = w1->ww_i.t; i < w1->ww_i.b; i++) { | |
| 04d70db4 EW |
38 | register j; |
| 39 | register char *smap = wwsmap[i]; | |
| 40 | register char *win = w1->ww_win[i]; | |
| 41 | union ww_char *ns = wwns[i]; | |
| 42 | union ww_char *buf = w1->ww_buf[i]; | |
| 84ad208b | 43 | int nvis = 0; |
| 04d70db4 | 44 | int nchanged = 0; |
| 7c1c9e39 | 45 | |
| 84ad208b | 46 | for (j = w1->ww_i.l; j < w1->ww_i.r; j++) { |
| 04d70db4 EW |
47 | w = wwindex[smap[j]]; |
| 48 | if (w1->ww_order > w->ww_order) | |
| 84ad208b | 49 | continue; |
| 04d70db4 | 50 | if (win[j] & WWM_GLS) |
| 84ad208b | 51 | continue; |
| 84ad208b EW |
52 | if (w != &wwnobody && w->ww_win[i][j] == 0) |
| 53 | w->ww_nvis[i]--; | |
| 04d70db4 EW |
54 | smap[j] = w1->ww_index; |
| 55 | if (win[j] == 0) | |
| 84ad208b | 56 | nvis++; |
| 04d70db4 EW |
57 | ns[j].c_w = buf[j].c_w ^ win[j] << WWC_MSHIFT; |
| 58 | nchanged++; | |
| 7c1c9e39 | 59 | } |
| 04d70db4 EW |
60 | if (nchanged > 4) |
| 61 | wwtouched[i] |= WWU_MAJOR|WWU_TOUCHED; | |
| 62 | else if (nchanged > 0) | |
| 63 | wwtouched[i] |= WWU_TOUCHED; | |
| 84ad208b | 64 | w1->ww_nvis[i] = nvis; |
| 7c1c9e39 EW |
65 | } |
| 66 | } |