| 1 | #ifndef lint |
| 2 | static char *sccsid = "@(#)wwwrite.c 3.9 83/08/26"; |
| 3 | #endif |
| 4 | |
| 5 | #include "ww.h" |
| 6 | |
| 7 | wwwrite(w, p, n) |
| 8 | register struct ww *w; |
| 9 | register char *p; |
| 10 | int n; |
| 11 | { |
| 12 | char c; |
| 13 | char hascursor = 0; |
| 14 | |
| 15 | wwnwrite++; |
| 16 | wwnwritec += n; |
| 17 | if (hascursor = w->ww_hascursor) |
| 18 | wwcursor(w, 0); |
| 19 | while (--n >= 0) { |
| 20 | c = *p++ & 0x7f; |
| 21 | switch (w->ww_wstate) { |
| 22 | case 0: |
| 23 | if (!ISCTRL(c)) { |
| 24 | int i, j; |
| 25 | register union ww_char *bp; |
| 26 | union ww_char *bq; |
| 27 | register union ww_char *ns; |
| 28 | register char *smap; |
| 29 | register char *win; |
| 30 | char *touched; |
| 31 | |
| 32 | if (w->ww_insert) { |
| 33 | wwinschar(w, w->ww_scroll + w->ww_cur.r, |
| 34 | w->ww_cur.c, |
| 35 | c | w->ww_modes << WWC_MSHIFT); |
| 36 | goto right; |
| 37 | } |
| 38 | i = w->ww_w.nc - w->ww_cur.c - 1; |
| 39 | bp = bq = &w->ww_buf[w->ww_scroll+w->ww_cur.r] |
| 40 | [w->ww_cur.c]; |
| 41 | bp++->c_w = c | w->ww_modes << WWC_MSHIFT; |
| 42 | while (n > 0 && --i >= 0 && !ISCTRL(*p)) { |
| 43 | n--; |
| 44 | bp++->c_w = *p++ & 0x7f |
| 45 | | w->ww_modes << WWC_MSHIFT; |
| 46 | } |
| 47 | win = &w->ww_win[w->ww_cur.r][w->ww_cur.c]; |
| 48 | i = wwcurrow(w); |
| 49 | j = wwcurcol(w); |
| 50 | smap = &wwsmap[i][j]; |
| 51 | ns = &wwns[i][j]; |
| 52 | touched = &wwtouched[i]; |
| 53 | j = i = bp - bq; |
| 54 | bp = bq; |
| 55 | while (--i >= 0) { |
| 56 | if (*smap++ == w->ww_index) { |
| 57 | *touched = 1; |
| 58 | ns++->c_w = bp++->c_w |
| 59 | ^ *win++ << WWC_MSHIFT; |
| 60 | } else { |
| 61 | ns++; |
| 62 | bp++; |
| 63 | win++; |
| 64 | } |
| 65 | } |
| 66 | if ((w->ww_cur.c += j) >= w->ww_w.nc) { |
| 67 | w->ww_cur.c = 0; |
| 68 | goto lf; |
| 69 | } |
| 70 | break; |
| 71 | } |
| 72 | switch (c) { |
| 73 | case '\n': |
| 74 | if (w->ww_mapnl) |
| 75 | w->ww_cur.c = 0; |
| 76 | lf: |
| 77 | if (++w->ww_cur.r >= w->ww_w.nr) { |
| 78 | w->ww_cur.r = w->ww_w.nr - 1; |
| 79 | if (w->ww_scroll + w->ww_w.nr |
| 80 | < w->ww_nline) |
| 81 | wwscroll(w, 1); |
| 82 | else |
| 83 | wwdelline(w, 0); |
| 84 | } |
| 85 | break; |
| 86 | case '\t': |
| 87 | w->ww_cur.c |= 7; |
| 88 | right: |
| 89 | if (++w->ww_cur.c >= w->ww_w.nc) { |
| 90 | w->ww_cur.c = 0; |
| 91 | goto lf; |
| 92 | } |
| 93 | break; |
| 94 | case '\b': |
| 95 | if (--w->ww_cur.c < 0) { |
| 96 | w->ww_cur.c = w->ww_w.nc - 1; |
| 97 | goto up; |
| 98 | } |
| 99 | break; |
| 100 | case '\r': |
| 101 | w->ww_cur.c = 0; |
| 102 | break; |
| 103 | case CTRL(g): |
| 104 | wwbell(); |
| 105 | break; |
| 106 | case CTRL([): |
| 107 | w->ww_wstate = 1; |
| 108 | break; |
| 109 | } |
| 110 | break; |
| 111 | case 1: |
| 112 | w->ww_wstate = 0; |
| 113 | switch (c) { |
| 114 | case '@': |
| 115 | w->ww_insert = 1; |
| 116 | break; |
| 117 | case 'A': |
| 118 | up: |
| 119 | if (--w->ww_cur.r < 0) { |
| 120 | w->ww_cur.r = 0; |
| 121 | if (w->ww_scroll > 0) |
| 122 | wwscroll(w, -1); |
| 123 | else |
| 124 | wwinsline(w, 0); |
| 125 | } |
| 126 | break; |
| 127 | case 'B': |
| 128 | goto lf; |
| 129 | case 'C': |
| 130 | goto right; |
| 131 | case 'E': |
| 132 | w->ww_scroll = 0; |
| 133 | w->ww_cur.c = w->ww_cur.r = 0; |
| 134 | wwclreos(w, 0, 0); |
| 135 | break; |
| 136 | case 'H': |
| 137 | w->ww_cur.c = w->ww_cur.r = 0; |
| 138 | break; |
| 139 | case 'J': |
| 140 | wwclreos(w, w->ww_scroll + w->ww_cur.r, |
| 141 | w->ww_cur.c); |
| 142 | break; |
| 143 | case 'K': |
| 144 | wwclreol(w, w->ww_scroll + w->ww_cur.r, |
| 145 | w->ww_cur.c); |
| 146 | break; |
| 147 | case 'L': |
| 148 | wwinsline(w, w->ww_scroll + w->ww_cur.r); |
| 149 | break; |
| 150 | case 'M': |
| 151 | wwdelline(w, w->ww_scroll + w->ww_cur.r); |
| 152 | break; |
| 153 | case 'N': |
| 154 | wwdelchar(w, w->ww_scroll + w->ww_cur.r, |
| 155 | w->ww_cur.c); |
| 156 | break; |
| 157 | case 'O': |
| 158 | w->ww_insert = 0; |
| 159 | break; |
| 160 | case 'Y': |
| 161 | w->ww_wstate = 2; |
| 162 | break; |
| 163 | case 'p': |
| 164 | w->ww_modes |= WWM_REV; |
| 165 | break; |
| 166 | case 'q': |
| 167 | w->ww_modes &= ~WWM_REV; |
| 168 | break; |
| 169 | case 'r': |
| 170 | w->ww_modes |= WWM_UL; |
| 171 | break; |
| 172 | case 's': |
| 173 | w->ww_modes &= ~WWM_UL; |
| 174 | break; |
| 175 | } |
| 176 | break; |
| 177 | case 2: |
| 178 | w->ww_cur.r = (c - ' ') % w->ww_w.nr; |
| 179 | w->ww_wstate++; |
| 180 | break; |
| 181 | case 3: |
| 182 | w->ww_cur.c = (c - ' ') % w->ww_w.nc; |
| 183 | w->ww_wstate = 0; |
| 184 | break; |
| 185 | } |
| 186 | } |
| 187 | if (hascursor) |
| 188 | wwcursor(w, 1); |
| 189 | return 0; |
| 190 | } |