projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 07662491 | 1 | #ifndef lint |
| 7edc52ec | 2 | static char sccsid[] = "@(#)wwdelete.c 3.12 %G%"; |
| 07662491 EW |
3 | #endif |
| 4 | ||
| 5 | #include "ww.h" | |
| 6 | ||
| 7 | /* | |
| 8 | * Pull w free from the cover list. | |
| 9 | */ | |
| 10 | wwdelete(w) | |
| 11 | register struct ww *w; | |
| 12 | { | |
| c05972b9 EW |
13 | register i; |
| 14 | ||
| 15 | for (i = w->ww_i.t; i < w->ww_i.b; i++) { | |
| 16 | register j; | |
| 17 | register char *smap = wwsmap[i]; | |
| 18 | register struct ww_char *ns = wwns[i]; | |
| 04d70db4 | 19 | register int nchanged = 0; |
| 84ad208b | 20 | |
| 84ad208b | 21 | for (j = w->ww_i.l; j < w->ww_i.r; j++) |
| c05972b9 EW |
22 | if (smap[j] == w->ww_index) { |
| 23 | smap[j] = WWX_NOBODY; | |
| 24 | ns[j].c_w = ' '; | |
| 04d70db4 | 25 | nchanged++; |
| 84ad208b | 26 | } |
| 04d70db4 EW |
27 | if (nchanged > 4) |
| 28 | wwtouched[i] |= WWU_MAJOR|WWU_TOUCHED; | |
| 29 | else if (nchanged > 0) | |
| 30 | wwtouched[i] |= WWU_TOUCHED; | |
| c05972b9 | 31 | } |
| 84ad208b | 32 | |
| c05972b9 EW |
33 | { |
| 34 | register struct ww *wp; | |
| 665bc9e7 | 35 | |
| c05972b9 EW |
36 | for (wp = w->ww_forw; wp != &wwhead; wp = wp->ww_forw) |
| 37 | wp->ww_order--; | |
| 38 | } | |
| 39 | ||
| 40 | if (w->ww_forw != &wwhead) | |
| 41 | wwdelete1(w->ww_forw, | |
| 42 | w->ww_i.t, w->ww_i.b, w->ww_i.l, w->ww_i.r); | |
| 861cd1ed | 43 | |
| 07662491 EW |
44 | w->ww_back->ww_forw = w->ww_forw; |
| 45 | w->ww_forw->ww_back = w->ww_back; | |
| 46 | w->ww_forw = w->ww_back = 0; | |
| 47 | } | |
| 665bc9e7 EW |
48 | |
| 49 | wwdelete1(w, t, b, l, r) | |
| 50 | register struct ww *w; | |
| 51 | { | |
| 52 | int i; | |
| 53 | int tt, bb, ll, rr; | |
| 1ceeb7e2 | 54 | char hasglass; |
| 665bc9e7 | 55 | |
| 1ceeb7e2 EW |
56 | again: |
| 57 | hasglass = 0; | |
| 665bc9e7 EW |
58 | tt = MAX(t, w->ww_i.t); |
| 59 | bb = MIN(b, w->ww_i.b); | |
| 60 | ll = MAX(l, w->ww_i.l); | |
| 61 | rr = MIN(r, w->ww_i.r); | |
| 1ceeb7e2 EW |
62 | if (tt >= bb || ll >= rr) { |
| 63 | if ((w = w->ww_forw) == &wwhead) | |
| 64 | return; | |
| 65 | goto again; | |
| 66 | } | |
| 665bc9e7 | 67 | for (i = tt; i < bb; i++) { |
| c05972b9 | 68 | register j; |
| 665bc9e7 EW |
69 | register char *smap = wwsmap[i]; |
| 70 | register union ww_char *ns = wwns[i]; | |
| 71 | register char *win = w->ww_win[i]; | |
| 72 | register union ww_char *buf = w->ww_buf[i]; | |
| 73 | int nvis = w->ww_nvis[i]; | |
| 04d70db4 | 74 | int nchanged = 0; |
| 665bc9e7 EW |
75 | |
| 76 | for (j = ll; j < rr; j++) { | |
| 1ceeb7e2 EW |
77 | if (smap[j] != WWX_NOBODY) |
| 78 | continue; | |
| 79 | if (win[j] & WWM_GLS) { | |
| 80 | hasglass = 1; | |
| 665bc9e7 | 81 | continue; |
| 1ceeb7e2 | 82 | } |
| c05972b9 EW |
83 | smap[j] = w->ww_index; |
| 84 | ns[j].c_w = buf[j].c_w ^ win[j] << WWC_MSHIFT; | |
| 04d70db4 | 85 | nchanged++; |
| c05972b9 EW |
86 | if (win[j] == 0) |
| 87 | nvis++; | |
| 665bc9e7 | 88 | } |
| 04d70db4 EW |
89 | if (nchanged > 4) |
| 90 | wwtouched[i] |= WWU_MAJOR|WWU_TOUCHED; | |
| 91 | else if (nchanged > 0) | |
| 92 | wwtouched[i] |= WWU_TOUCHED; | |
| 665bc9e7 EW |
93 | w->ww_nvis[i] = nvis; |
| 94 | } | |
| 95 | if ((w = w->ww_forw) == &wwhead) | |
| 96 | return; | |
| 1ceeb7e2 EW |
97 | if (hasglass) |
| 98 | goto again; | |
| 665bc9e7 EW |
99 | if (tt > t) |
| 100 | wwdelete1(w, t, tt, l, r); | |
| 101 | if (bb < b) | |
| 102 | wwdelete1(w, bb, b, l, r); | |
| 103 | if (ll > l) | |
| 1ceeb7e2 | 104 | wwdelete1(w, tt, bb, l, ll); |
| 665bc9e7 | 105 | if (rr < r) |
| 1ceeb7e2 | 106 | wwdelete1(w, tt, bb, rr, r); |
| 665bc9e7 | 107 | } |