| 1 | #ifndef lint |
| 2 | static char *sccsid = "@(#)wwwrite.c 3.3 83/08/16"; |
| 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 | int oldn = n; |
| 14 | |
| 15 | if (w == 0) |
| 16 | return -1; |
| 17 | wwnwrite++; |
| 18 | wwnwritec += n; |
| 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, c); |
| 35 | goto right; |
| 36 | } |
| 37 | i = w->ww_w.nc - w->ww_cur.c - 1; |
| 38 | bp = bq = &w->ww_buf[w->ww_scroll+w->ww_cur.r] |
| 39 | [w->ww_cur.c]; |
| 40 | bp++->c_w = c; |
| 41 | while (n > 0 && --i >= 0 && !ISCTRL(*p)) { |
| 42 | n--; |
| 43 | bp++->c_w = *p++; |
| 44 | } |
| 45 | win = &w->ww_win[w->ww_cur.r][w->ww_cur.c]; |
| 46 | i = wwcurrow(w); |
| 47 | j = wwcurcol(w); |
| 48 | smap = &wwsmap[i][j]; |
| 49 | ns = &wwns[i][j]; |
| 50 | touched = &wwtouched[i]; |
| 51 | j = i = bp - bq; |
| 52 | bp = bq; |
| 53 | while (--i >= 0) { |
| 54 | if (*smap++ == w->ww_index) { |
| 55 | *touched = 1; |
| 56 | ns++->c_w = bp++->c_w |
| 57 | ^ *win++ << WWC_MSHIFT; |
| 58 | } else { |
| 59 | ns++; |
| 60 | bp++; |
| 61 | win++; |
| 62 | } |
| 63 | } |
| 64 | if ((w->ww_cur.c += j) >= w->ww_w.nc) { |
| 65 | w->ww_cur.c = 0; |
| 66 | goto lf; |
| 67 | } |
| 68 | break; |
| 69 | } |
| 70 | switch (c) { |
| 71 | case '\n': |
| 72 | if (w->ww_mapnl) |
| 73 | w->ww_cur.c = 0; |
| 74 | lf: |
| 75 | if (++w->ww_cur.r >= w->ww_w.nr) { |
| 76 | w->ww_cur.r = w->ww_w.nr - 1; |
| 77 | wwdelline(w, 0); |
| 78 | } |
| 79 | break; |
| 80 | case '\t': |
| 81 | w->ww_cur.c |= 7; |
| 82 | right: |
| 83 | if (++w->ww_cur.c >= w->ww_w.nc) { |
| 84 | w->ww_cur.c = 0; |
| 85 | goto lf; |
| 86 | } |
| 87 | break; |
| 88 | case '\b': |
| 89 | if (--w->ww_cur.c < 0) |
| 90 | w->ww_cur.c = 0; |
| 91 | break; |
| 92 | case '\r': |
| 93 | w->ww_cur.c = 0; |
| 94 | break; |
| 95 | case CTRL(g): |
| 96 | wwbell(); |
| 97 | break; |
| 98 | case CTRL([): |
| 99 | w->ww_wstate = 1; |
| 100 | break; |
| 101 | } |
| 102 | break; |
| 103 | case 1: |
| 104 | w->ww_wstate = 0; |
| 105 | switch (c) { |
| 106 | case '@': |
| 107 | w->ww_insert = 1; |
| 108 | break; |
| 109 | case 'A': |
| 110 | if (--w->ww_cur.r < 0) |
| 111 | w->ww_cur.r = 0; |
| 112 | break; |
| 113 | case 'B': |
| 114 | goto lf; |
| 115 | case 'C': |
| 116 | goto right; |
| 117 | case 'E': |
| 118 | w->ww_scroll = 0; |
| 119 | w->ww_cur.c = w->ww_cur.r = 0; |
| 120 | wwclreos(w, 0, 0); |
| 121 | break; |
| 122 | case 'H': |
| 123 | w->ww_cur.c = w->ww_cur.r = 0; |
| 124 | break; |
| 125 | case 'J': |
| 126 | wwclreos(w, w->ww_scroll + w->ww_cur.r, |
| 127 | w->ww_cur.c); |
| 128 | break; |
| 129 | case 'K': |
| 130 | wwclreol(w, w->ww_scroll + w->ww_cur.r, |
| 131 | w->ww_cur.c); |
| 132 | break; |
| 133 | case 'L': |
| 134 | wwinsline(w, w->ww_scroll + w->ww_cur.r); |
| 135 | break; |
| 136 | case 'M': |
| 137 | wwdelline(w, w->ww_scroll + w->ww_cur.r); |
| 138 | break; |
| 139 | case 'N': |
| 140 | wwdelchar(w, w->ww_scroll + w->ww_cur.r, |
| 141 | w->ww_cur.c); |
| 142 | break; |
| 143 | case 'O': |
| 144 | w->ww_insert = 0; |
| 145 | break; |
| 146 | case 'Y': |
| 147 | w->ww_wstate = 2; |
| 148 | break; |
| 149 | } |
| 150 | break; |
| 151 | case 2: |
| 152 | w->ww_cur.r = (c - ' ') % w->ww_w.nr; |
| 153 | w->ww_wstate++; |
| 154 | break; |
| 155 | case 3: |
| 156 | w->ww_cur.c = (c - ' ') % w->ww_w.nc; |
| 157 | w->ww_wstate = 0; |
| 158 | break; |
| 159 | } |
| 160 | } |
| 161 | return oldn - n; |
| 162 | } |