Commit | Line | Data |
---|---|---|
bc28423e | 1 | #ifndef lint |
7edc52ec | 2 | static char sccsid[] = "@(#)wwinschar.c 3.13 %G%"; |
bc28423e EW |
3 | #endif |
4 | ||
5 | #include "ww.h" | |
e908bfac | 6 | #include "tt.h" |
bc28423e | 7 | |
f2a77fe1 | 8 | wwinschar(w, row, col, c) |
bc28423e | 9 | register struct ww *w; |
14f251df | 10 | short c; |
bc28423e | 11 | { |
14f251df | 12 | register i; |
14f251df | 13 | int nvis; |
bc28423e | 14 | |
19f9784c EW |
15 | /* |
16 | * First, shift the line. | |
17 | */ | |
14f251df EW |
18 | { |
19 | register union ww_char *p, *q; | |
20 | ||
f2a77fe1 | 21 | p = &w->ww_buf[row][w->ww_b.r]; |
14f251df | 22 | q = p - 1; |
f2a77fe1 | 23 | for (i = w->ww_b.r - col; --i > 0;) |
14f251df EW |
24 | *--p = *--q; |
25 | q->c_w = c; | |
26 | } | |
19f9784c EW |
27 | |
28 | /* | |
29 | * If can't see it, just return. | |
30 | */ | |
f2a77fe1 EW |
31 | if (row < w->ww_i.t || row >= w->ww_i.b |
32 | || w->ww_i.r <= 0 || w->ww_i.r <= col) | |
14f251df | 33 | return; |
19f9784c | 34 | |
f2a77fe1 EW |
35 | if (col < w->ww_i.l) |
36 | col = w->ww_i.l; | |
19f9784c EW |
37 | |
38 | /* | |
39 | * Now find out how much is actually changed, and fix wwns. | |
40 | */ | |
14f251df EW |
41 | { |
42 | register union ww_char *buf; | |
43 | register char *win; | |
44 | register union ww_char *ns; | |
45 | register char *smap; | |
d069a508 | 46 | char touched; |
14f251df EW |
47 | |
48 | nvis = 0; | |
f2a77fe1 | 49 | smap = &wwsmap[row][col]; |
d069a508 EW |
50 | for (i = col; i < w->ww_i.r && *smap++ != w->ww_index; i++) |
51 | ; | |
52 | if (i >= w->ww_i.r) | |
14f251df | 53 | return; |
d069a508 EW |
54 | col = i; |
55 | buf = w->ww_buf[row]; | |
56 | win = w->ww_win[row]; | |
57 | ns = wwns[row]; | |
58 | smap = &wwsmap[row][i]; | |
59 | touched = wwtouched[row]; | |
60 | for (; i < w->ww_i.r; i++) { | |
61 | if (*smap++ != w->ww_index) | |
62 | continue; | |
04d70db4 | 63 | touched |= WWU_TOUCHED; |
d069a508 EW |
64 | if (win[i]) |
65 | ns[i].c_w = | |
66 | buf[i].c_w ^ win[i] << WWC_MSHIFT; | |
67 | else { | |
14f251df | 68 | nvis++; |
d069a508 | 69 | ns[i] = buf[i]; |
bc28423e | 70 | } |
d069a508 EW |
71 | } |
72 | wwtouched[row] = touched; | |
bc28423e | 73 | } |
19f9784c EW |
74 | |
75 | /* | |
76 | * Can/Should we use delete character? | |
77 | */ | |
3130283e | 78 | if (tt.tt_hasinsert && nvis > (wwncol - col) / 2) { |
14f251df EW |
79 | register union ww_char *p, *q; |
80 | ||
3130283e EW |
81 | tt.tt_ninsert = 1; |
82 | tt.tt_nmodes = c >> WWC_MSHIFT & tt.tt_availmodes; | |
f2a77fe1 | 83 | (*tt.tt_move)(row, col); |
14f251df | 84 | (*tt.tt_putc)(c & WWC_CMASK); |
3130283e | 85 | tt.tt_ninsert = 0; |
14f251df | 86 | |
f2a77fe1 | 87 | p = &wwos[row][wwncol]; |
14f251df | 88 | q = p - 1; |
f2a77fe1 | 89 | for (i = wwncol - col; --i > 0;) |
14f251df EW |
90 | *--p = *--q; |
91 | q->c_w = c; | |
92 | } | |
bc28423e | 93 | } |