projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 07662491 | 1 | #ifndef lint |
| 665bc9e7 | 2 | static char *sccsid = "@(#)wwdelete.c 3.8 83/11/28"; |
| 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 | { | |
| 84ad208b EW |
13 | register struct ww *wp; |
| 14 | register i, j; | |
| 15 | ||
| 16 | for (i = w->ww_i.t; i < w->ww_i.b; i++) | |
| 17 | for (j = w->ww_i.l; j < w->ww_i.r; j++) | |
| 18 | if (wwsmap[i][j] == w->ww_index) { | |
| 19 | wwsmap[i][j] = WWX_NOBODY; | |
| 20 | wwns[i][j].c_w = ' '; | |
| 21 | wwtouched[i] = 1; | |
| 22 | } | |
| 84ad208b | 23 | |
| 665bc9e7 | 24 | for (wp = w->ww_forw; wp != &wwhead; wp = wp->ww_forw) |
| 84ad208b | 25 | w->ww_order--; |
| 665bc9e7 EW |
26 | |
| 27 | if ((wp = w->ww_forw) != &wwhead) | |
| 28 | wwdelete1(wp, w->ww_i.t, w->ww_i.b, w->ww_i.l, w->ww_i.r); | |
| 861cd1ed | 29 | |
| 07662491 EW |
30 | w->ww_back->ww_forw = w->ww_forw; |
| 31 | w->ww_forw->ww_back = w->ww_back; | |
| 32 | w->ww_forw = w->ww_back = 0; | |
| 33 | } | |
| 665bc9e7 EW |
34 | |
| 35 | wwdelete1(w, t, b, l, r) | |
| 36 | register struct ww *w; | |
| 37 | { | |
| 38 | int i; | |
| 39 | int tt, bb, ll, rr; | |
| 40 | ||
| 41 | tt = MAX(t, w->ww_i.t); | |
| 42 | bb = MIN(b, w->ww_i.b); | |
| 43 | ll = MAX(l, w->ww_i.l); | |
| 44 | rr = MIN(r, w->ww_i.r); | |
| 45 | for (i = tt; i < bb; i++) { | |
| 46 | register j = ll; | |
| 47 | register char *smap = wwsmap[i]; | |
| 48 | register union ww_char *ns = wwns[i]; | |
| 49 | register char *win = w->ww_win[i]; | |
| 50 | register union ww_char *buf = w->ww_buf[i]; | |
| 51 | int nvis = w->ww_nvis[i]; | |
| 52 | char touched = wwtouched[i]; | |
| 53 | ||
| 54 | for (j = ll; j < rr; j++) { | |
| 55 | if (smap[j] != WWX_NOBODY) | |
| 56 | continue; | |
| 57 | if ((win[j] & WWM_GLS) == 0) { | |
| 58 | smap[j] = w->ww_index; | |
| 59 | ns[j].c_w = buf[j].c_w ^ win[j] << WWC_MSHIFT; | |
| 60 | touched = 1; | |
| 61 | if (win[j] == 0) | |
| 62 | nvis++; | |
| 63 | } | |
| 64 | } | |
| 65 | wwtouched[i] = touched; | |
| 66 | w->ww_nvis[i] = nvis; | |
| 67 | } | |
| 68 | if ((w = w->ww_forw) == &wwhead) | |
| 69 | return; | |
| 70 | if (tt > t) | |
| 71 | wwdelete1(w, t, tt, l, r); | |
| 72 | if (bb < b) | |
| 73 | wwdelete1(w, bb, b, l, r); | |
| 74 | if (ll > l) | |
| 75 | wwdelete1(w, t, b, l, ll); | |
| 76 | if (rr < r) | |
| 77 | wwdelete1(w, t, b, rr, r); | |
| 78 | } |