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1 | /* |
2 | * curses.c | |
3 | * | |
4 | * This source herein may be modified and/or distributed by anybody who | |
5 | * so desires, with the following restrictions: | |
6 | * 1.) No portion of this notice shall be removed. | |
7 | * 2.) Credit shall not be taken for the creation of this source. | |
8 | * 3.) This code is not to be traded, sold, or used for personal | |
9 | * gain or profit. | |
10 | * | |
11 | */ | |
12 | ||
13 | #ifndef lint | |
14 | static char sccsid[] = "@(#)curses.c 5.1 (Berkeley) %G%"; | |
15 | #endif /* not lint */ | |
16 | ||
17 | #ifdef CURSES | |
18 | ||
19 | /* The following is a curses emulation package suitable for the rogue program | |
20 | * in which it is included. No other suitability is claimed or suspected. | |
21 | * Only those routines currently needed by this rogue program are included. | |
22 | * This is being provided for those systems that don't have a suitable | |
23 | * curses package and want to run this rogue program. | |
24 | * | |
25 | * Compile the entire program with -DCURSES to incorporate this package. | |
26 | * | |
27 | * The following is NOT supported: | |
28 | * "%D", "%B", "%n", or "%>" inside a cursor motion (cm) termcap string. | |
29 | * Terminals in which the cursor motion addresses the row differently from | |
30 | * the column, as in ":cm=\E%2,%3" or ":cm=\EY%+x;%+y" | |
31 | * Termcap database stored in the TERMCAP environ variable as returned | |
32 | * from md_getenv(). Only the termcap file name can be stored there. | |
33 | * See the comments for md_getenv() in machdep.c. | |
34 | * Terminals without non-destructive backspace. Backspace (^H) is used | |
35 | * for cursor motion regardless of any termcap entries. | |
36 | * The ":tc=" termcap entry is ignored. | |
37 | * | |
38 | * Suggestions: | |
39 | * Use line-feed as your termcap "do" entry: ":do=^J", ":do=\012" or | |
40 | * ":do=\n" This will help cursor motion optimization. If line-feed | |
41 | * won't work, then a short escape sequence will do. | |
42 | */ | |
43 | ||
44 | #include <stdio.h> | |
45 | #include "rogue.h" | |
46 | ||
47 | boolean tc_tname(); | |
48 | ||
49 | #define BS 010 | |
50 | #define LF 012 | |
51 | #define CR 015 | |
52 | #define ESC '\033' | |
53 | #define TAB '\011' | |
54 | ||
55 | #define ST_MASK 0x80 | |
56 | #define BUFLEN 256 | |
57 | ||
58 | char terminal[DROWS][DCOLS]; | |
59 | char buffer[DROWS][DCOLS]; | |
60 | char *tc_file; | |
61 | ||
62 | char cm_esc[16]; | |
63 | char cm_sep[16]; | |
64 | char cm_end[16]; | |
65 | boolean cm_reverse = 0; | |
66 | boolean cm_two = 0; | |
67 | boolean cm_three = 0; | |
68 | boolean cm_char = 0; | |
69 | short cm_inc = 0; | |
70 | ||
71 | boolean screen_dirty; | |
72 | boolean lines_dirty[DROWS]; | |
73 | boolean buf_stand_out = 0; | |
74 | boolean term_stand_out = 0; | |
75 | ||
76 | int LINES = DROWS; | |
77 | int COLS = DCOLS; | |
78 | WINDOW scr_buf; | |
79 | WINDOW *curscr = &scr_buf; | |
80 | ||
81 | char *CL = (char *) 0; | |
82 | char *CM = (char *) 0; | |
83 | char *UC = (char *) 0; /* UP */ | |
84 | char *DO = (char *) 0; | |
85 | char *VS = ""; | |
86 | char *VE = ""; | |
87 | char *TI = ""; | |
88 | char *TE = ""; | |
89 | char *SO = ""; | |
90 | char *SE = ""; | |
91 | ||
92 | short cur_row; | |
93 | short cur_col; | |
94 | ||
95 | initscr() | |
96 | { | |
97 | clear(); | |
98 | get_term_info(); | |
99 | printf("%s%s", TI, VS); | |
100 | } | |
101 | ||
102 | endwin() | |
103 | { | |
104 | printf("%s%s", TE, VE); | |
105 | md_cbreak_no_echo_nonl(0); | |
106 | } | |
107 | ||
108 | move(row, col) | |
109 | short row, col; | |
110 | { | |
111 | curscr->_cury = row; | |
112 | curscr->_curx = col; | |
113 | screen_dirty = 1; | |
114 | } | |
115 | ||
116 | mvaddstr(row, col, str) | |
117 | short row, col; | |
118 | char *str; | |
119 | { | |
120 | move(row, col); | |
121 | addstr(str); | |
122 | } | |
123 | ||
124 | addstr(str) | |
125 | char *str; | |
126 | { | |
127 | while (*str) { | |
128 | addch((int) *str++); | |
129 | } | |
130 | } | |
131 | ||
132 | addch(ch) | |
133 | register int ch; | |
134 | { | |
135 | short row, col; | |
136 | ||
137 | row = curscr->_cury; | |
138 | col = curscr->_curx++; | |
139 | ||
140 | if (buf_stand_out) { | |
141 | ch |= ST_MASK; | |
142 | } | |
143 | buffer[row][col] = (char) ch; | |
144 | lines_dirty[row] = 1; | |
145 | screen_dirty = 1; | |
146 | } | |
147 | ||
148 | mvaddch(row, col, ch) | |
149 | short row, col; | |
150 | int ch; | |
151 | { | |
152 | move(row, col); | |
153 | addch(ch); | |
154 | } | |
155 | ||
156 | refresh() | |
157 | { | |
158 | register i, j, line; | |
159 | short old_row, old_col, first_row; | |
160 | ||
161 | if (screen_dirty) { | |
162 | ||
163 | old_row = curscr->_cury; | |
164 | old_col = curscr->_curx; | |
165 | first_row = cur_row; | |
166 | ||
167 | for (i = 0; i < DROWS; i++) { | |
168 | line = (first_row + i) % DROWS; | |
169 | if (lines_dirty[line]) { | |
170 | for (j = 0; j < DCOLS; j++) { | |
171 | if (buffer[line][j] != terminal[line][j]) { | |
172 | put_char_at(line, j, buffer[line][j]); | |
173 | } | |
174 | } | |
175 | lines_dirty[line] = 0; | |
176 | } | |
177 | } | |
178 | put_cursor(old_row, old_col); | |
179 | screen_dirty = 0; | |
180 | fflush(stdout); | |
181 | } | |
182 | } | |
183 | ||
184 | wrefresh(scr) | |
185 | WINDOW *scr; | |
186 | { | |
187 | short i, col; | |
188 | ||
189 | printf("%s", CL); | |
190 | cur_row = cur_col = 0; | |
191 | ||
192 | for (i = 0; i < DROWS; i++) { | |
193 | col = 0; | |
194 | while (col < DCOLS) { | |
195 | while ((col < DCOLS) && (buffer[i][col] == ' ')) { | |
196 | col++; | |
197 | } | |
198 | if (col < DCOLS) { | |
199 | put_cursor(i, col); | |
200 | } | |
201 | while ((col < DCOLS) && (buffer[i][col] != ' ')) { | |
202 | put_st_char((int) buffer[i][col]); | |
203 | cur_col++; | |
204 | col++; | |
205 | } | |
206 | } | |
207 | } | |
208 | put_cursor(curscr->_cury, curscr->_curx); | |
209 | fflush(stdout); | |
210 | scr = scr; /* make lint happy */ | |
211 | } | |
212 | ||
213 | mvinch(row, col) | |
214 | short row, col; | |
215 | { | |
216 | move(row, col); | |
217 | return((int) buffer[row][col]); | |
218 | } | |
219 | ||
220 | clear() | |
221 | { | |
222 | printf("%s", CL); | |
223 | fflush(stdout); | |
224 | cur_row = cur_col = 0; | |
225 | move(0, 0); | |
226 | clear_buffers(); | |
227 | } | |
228 | ||
229 | clrtoeol() | |
230 | { | |
231 | short row, col; | |
232 | ||
233 | row = curscr->_cury; | |
234 | ||
235 | for (col = curscr->_curx; col < DCOLS; col++) { | |
236 | buffer[row][col] = ' '; | |
237 | } | |
238 | lines_dirty[row] = 1; | |
239 | } | |
240 | ||
241 | standout() | |
242 | { | |
243 | buf_stand_out = 1; | |
244 | } | |
245 | ||
246 | standend() | |
247 | { | |
248 | buf_stand_out = 0; | |
249 | } | |
250 | ||
251 | crmode() | |
252 | { | |
253 | md_cbreak_no_echo_nonl(1); | |
254 | } | |
255 | ||
256 | noecho() | |
257 | { | |
258 | /* crmode() takes care of this */ | |
259 | } | |
260 | ||
261 | nonl() | |
262 | { | |
263 | /* crmode() takes care of this */ | |
264 | } | |
265 | ||
266 | clear_buffers() | |
267 | { | |
268 | register i, j; | |
269 | ||
270 | screen_dirty = 0; | |
271 | ||
272 | for (i = 0; i < DROWS; i++) { | |
273 | lines_dirty[i] = 0; | |
274 | for (j = 0; j < DCOLS; j++) { | |
275 | terminal[i][j] = ' '; | |
276 | buffer[i][j] = ' '; | |
277 | } | |
278 | } | |
279 | } | |
280 | ||
281 | put_char_at(row, col, ch) | |
282 | register row, col, ch; | |
283 | { | |
284 | put_cursor(row, col); | |
285 | put_st_char(ch); | |
286 | terminal[row][col] = (char) ch; | |
287 | cur_col++; | |
288 | } | |
289 | ||
290 | put_cursor(row, col) | |
291 | register row, col; | |
292 | { | |
293 | register i, rdif, cdif; | |
294 | short ch, t; | |
295 | ||
296 | rdif = (row > cur_row) ? row - cur_row : cur_row - row; | |
297 | cdif = (col > cur_col) ? col - cur_col : cur_col - col; | |
298 | ||
299 | if (((row > cur_row) && DO) || ((cur_row > row) && UC)) { | |
300 | if ((rdif < 4) && (cdif < 4)) { | |
301 | for (i = 0; i < rdif; i++) { | |
302 | printf("%s", ((row < cur_row) ? UC : DO)); | |
303 | } | |
304 | cur_row = row; | |
305 | if (col == cur_col) { | |
306 | return; | |
307 | } | |
308 | } | |
309 | } | |
310 | if (row == cur_row) { | |
311 | if (cdif <= 6) { | |
312 | for (i = 0; i < cdif; i++) { | |
313 | ch = (col < cur_col) ? BS : | |
314 | terminal[row][cur_col + i]; | |
315 | put_st_char((int) ch); | |
316 | } | |
317 | cur_row = row; | |
318 | cur_col = col; | |
319 | return; | |
320 | } | |
321 | } | |
322 | cur_row = row; | |
323 | cur_col = col; | |
324 | ||
325 | row += cm_inc; | |
326 | col += cm_inc; | |
327 | ||
328 | if (cm_reverse) { | |
329 | t = row; | |
330 | row = col; | |
331 | col = t; | |
332 | } | |
333 | if (cm_two) { | |
334 | printf("%s%02d%s%02d%s", cm_esc, row, cm_sep, col, cm_end); | |
335 | } else if (cm_three) { | |
336 | printf("%s%03d%s%03d%s", cm_esc, row, cm_sep, col, cm_end); | |
337 | } else if (cm_char) { | |
338 | printf("%s%c%s%c%s", cm_esc, row, cm_sep, col, cm_end); | |
339 | } else { | |
340 | printf("%s%d%s%d%s", cm_esc, row, cm_sep, col, cm_end); | |
341 | } | |
342 | } | |
343 | ||
344 | put_st_char(ch) | |
345 | register ch; | |
346 | { | |
347 | if ((ch & ST_MASK) && (!term_stand_out)) { | |
348 | ch &= ~ST_MASK; | |
349 | printf("%s%c", SO, ch); | |
350 | term_stand_out = 1; | |
351 | } else if ((!(ch & ST_MASK)) && term_stand_out) { | |
352 | printf("%s%c", SE, ch); | |
353 | term_stand_out = 0; | |
354 | } else { | |
355 | ch &= ~ST_MASK; | |
356 | putchar(ch); | |
357 | } | |
358 | } | |
359 | ||
360 | get_term_info() | |
361 | { | |
362 | FILE *fp; | |
363 | char *term, *tcf; | |
364 | char buf[BUFLEN]; | |
365 | ||
366 | if (tcf = md_getenv("TERMCAP")) { | |
367 | if (strlen(tcf) > 40) { | |
368 | clean_up("TERMCAP file name too long"); | |
369 | } | |
370 | tc_file = tcf; | |
371 | } else { | |
372 | if (!(tc_file = md_gdtcf())) { | |
373 | clean_up("I need a termcap file"); | |
374 | } | |
375 | } | |
376 | ||
377 | if (!(term = md_getenv("TERM"))) { | |
378 | clean_up("Cannot find TERM variable in environ"); | |
379 | } | |
380 | if ((fp = fopen(tc_file, "r")) == NULL) { | |
381 | sprintf(buf, "Cannot open TERMCAP file: %s", tc_file); | |
382 | clean_up(buf); | |
383 | } | |
384 | ||
385 | if (!tc_tname(fp, term, buf)) { | |
386 | sprintf(buf, "Cannot find TERM type: %s in TERMCAP file: %s", term, | |
387 | tc_file); | |
388 | clean_up(buf); | |
389 | } | |
390 | tc_gtdata(fp, buf); | |
391 | fclose(fp); | |
392 | } | |
393 | ||
394 | boolean | |
395 | tc_tname(fp, term, buf) | |
396 | FILE *fp; | |
397 | char *term; | |
398 | char *buf; | |
399 | { | |
400 | short i, j; | |
401 | boolean found = 0; | |
402 | char *fg; | |
403 | ||
404 | while (!found) { | |
405 | i = 0; | |
406 | fg = fgets(buf, BUFLEN, fp); | |
407 | if (fg != NULL) { | |
408 | if ( (buf[0] != '#') && (buf[0] != ' ') && (buf[0] != TAB) && | |
409 | (buf[0] != CR) && (buf[0] != LF)) { | |
410 | while (buf[i] && (!found)) { | |
411 | j = 0; | |
412 | while (buf[i] == term[j]) { | |
413 | i++; | |
414 | j++; | |
415 | } | |
416 | if ((!term[j]) && ((buf[i] == '|') || (buf[i] == ':'))) { | |
417 | found = 1; | |
418 | } else { | |
419 | while (buf[i] && (buf[i] != '|') && (buf[i] != ':')) { | |
420 | i++; | |
421 | } | |
422 | if (buf[i]) { | |
423 | i++; | |
424 | } | |
425 | } | |
426 | } | |
427 | } | |
428 | } else { | |
429 | break; | |
430 | } | |
431 | } | |
432 | return(found); | |
433 | } | |
434 | ||
435 | tc_gtdata(fp, buf) | |
436 | FILE *fp; | |
437 | char *buf; | |
438 | { | |
439 | short i; | |
440 | boolean first = 1; | |
441 | ||
442 | do { | |
443 | if (!first) { | |
444 | if ((buf[0] != TAB) && (buf[0] != ' ')) { | |
445 | break; | |
446 | } | |
447 | } | |
448 | first = 0; | |
449 | i = 0; | |
450 | while (buf[i]) { | |
451 | while (buf[i] && (buf[i] != ':')) { | |
452 | i++; | |
453 | } | |
454 | if (buf[i] == ':') { | |
455 | if (!strncmp(buf + i, ":cl=", 4)) { | |
456 | tc_gets(buf + i, &CL); | |
457 | } else if (!strncmp(buf + i, ":cm=", 4)) { | |
458 | tc_gets(buf + i, &CM); | |
459 | } else if (!strncmp(buf + i, ":up=", 4)) { | |
460 | tc_gets(buf + i, &UC); | |
461 | } else if (!strncmp(buf + i, ":do=", 4)) { | |
462 | tc_gets(buf + i, &DO); | |
463 | } else if (!strncmp(buf + i, ":vs=", 4)) { | |
464 | tc_gets(buf + i, &VS); | |
465 | } else if (!strncmp(buf + i, ":ve=", 4)) { | |
466 | tc_gets(buf + i, &VE); | |
467 | } else if (!strncmp(buf + i, ":ti=", 4)) { | |
468 | tc_gets(buf + i, &TI); | |
469 | } else if (!strncmp(buf + i, ":te=", 4)) { | |
470 | tc_gets(buf + i, &TE); | |
471 | } else if (!strncmp(buf + i, ":vs=", 4)) { | |
472 | tc_gets(buf + i, &VS); | |
473 | } else if (!strncmp(buf + i, ":ve=", 4)) { | |
474 | tc_gets(buf + i, &VE); | |
475 | } else if (!strncmp(buf + i, ":so=", 4)) { | |
476 | tc_gets(buf + i, &SO); | |
477 | } else if (!strncmp(buf + i, ":se=", 4)) { | |
478 | tc_gets(buf + i, &SE); | |
479 | } else if (!strncmp(buf + i, ":li#", 4)) { | |
480 | tc_gnum(buf + i, &LINES); | |
481 | } else if (!strncmp(buf + i, ":co#", 4)) { | |
482 | tc_gnum(buf + i, &COLS); | |
483 | } | |
484 | i++; | |
485 | } | |
486 | } | |
487 | } while (fgets(buf, BUFLEN, fp) != NULL); | |
488 | ||
489 | if ((!CM) || (!CL)) { | |
490 | clean_up("Terminal and termcap must have cm and cl"); | |
491 | } | |
492 | tc_cmget(); | |
493 | } | |
494 | ||
495 | tc_gets(ibuf, tcstr) | |
496 | char *ibuf; | |
497 | char **tcstr; | |
498 | { | |
499 | short i, j, k, n; | |
500 | char obuf[BUFLEN]; | |
501 | ||
502 | i = 4; | |
503 | j = 0; | |
504 | ||
505 | while (ibuf[i] && is_digit(ibuf[i])) { | |
506 | i++; | |
507 | } | |
508 | ||
509 | while (ibuf[i] && (ibuf[i] != ':')) { | |
510 | if (ibuf[i] == '\\') { | |
511 | i++; | |
512 | switch(ibuf[i]) { | |
513 | case 'E': | |
514 | obuf[j] = ESC; | |
515 | i++; | |
516 | break; | |
517 | case 'n': | |
518 | obuf[j] = LF; | |
519 | i++; | |
520 | break; | |
521 | case 'r': | |
522 | obuf[j] = CR; | |
523 | i++; | |
524 | break; | |
525 | case 'b': | |
526 | obuf[j] = BS; | |
527 | i++; | |
528 | break; | |
529 | case 't': | |
530 | obuf[j] = TAB; | |
531 | i++; | |
532 | break; | |
533 | case '0': | |
534 | case '1': | |
535 | case '2': | |
536 | case '3': | |
537 | case '4': | |
538 | case '5': | |
539 | case '6': | |
540 | case '7': | |
541 | case '8': | |
542 | case '9': | |
543 | n = 0; | |
544 | k = 0; | |
545 | while (k < 3 && ibuf[i] && is_digit(ibuf[i])) { | |
546 | n = (8 * n) + (ibuf[i] - '0'); | |
547 | i++; | |
548 | k++; | |
549 | } | |
550 | obuf[j] = (char) n; | |
551 | break; | |
552 | default: | |
553 | obuf[j] = ibuf[i]; | |
554 | i++; | |
555 | } | |
556 | } else if (ibuf[i] == '^') { | |
557 | obuf[j] = ibuf[i+1] - 64; | |
558 | i += 2; | |
559 | } else { | |
560 | obuf[j] = ibuf[i++]; | |
561 | } | |
562 | j++; | |
563 | } | |
564 | obuf[j] = 0; | |
565 | if (!(*tcstr = md_malloc(j + 1))) { | |
566 | clean_up("cannot alloc() memory"); | |
567 | } | |
568 | (void) strcpy(*tcstr, obuf); | |
569 | } | |
570 | ||
571 | tc_gnum(ibuf, n) | |
572 | char *ibuf; | |
573 | int *n; | |
574 | { | |
575 | short i; | |
576 | int r = 0; | |
577 | ||
578 | i = 4; | |
579 | ||
580 | while (is_digit(ibuf[i])) { | |
581 | r = (r * 10) + (ibuf[i] - '0'); | |
582 | i++; | |
583 | } | |
584 | *n = r; | |
585 | } | |
586 | ||
587 | tstp() | |
588 | { | |
589 | endwin(); | |
590 | md_tstp(); | |
591 | ||
592 | start_window(); | |
593 | printf("%s%s", TI, VS); | |
594 | wrefresh(curscr); | |
595 | md_slurp(); | |
596 | } | |
597 | ||
598 | tc_cmget() | |
599 | { | |
600 | short i = 0, j = 0, rc_spec = 0; | |
601 | ||
602 | while (CM[i] && (CM[i] != '%') && (j < 15)) { | |
603 | cm_esc[j++] = CM[i++]; | |
604 | } | |
605 | cm_esc[j] = 0; | |
606 | ||
607 | while (CM[i] && (rc_spec < 2)) { | |
608 | if (CM[i] == '%') { | |
609 | i++; | |
610 | switch(CM[i]) { | |
611 | case 'd': | |
612 | rc_spec++; | |
613 | break; | |
614 | case 'i': | |
615 | cm_inc = 1; | |
616 | break; | |
617 | case '2': | |
618 | cm_two = 1; | |
619 | rc_spec++; | |
620 | break; | |
621 | case '3': | |
622 | cm_three = 1; | |
623 | rc_spec++; | |
624 | break; | |
625 | case '.': | |
626 | cm_char = 1; | |
627 | rc_spec++; | |
628 | break; | |
629 | case 'r': | |
630 | cm_reverse = 1; | |
631 | break; | |
632 | case '+': | |
633 | i++; | |
634 | cm_inc = CM[i]; | |
635 | cm_char = 1; | |
636 | rc_spec++; | |
637 | break; | |
638 | } | |
639 | i++; | |
640 | } else { | |
641 | j = 0; | |
642 | while (CM[i] && (CM[i] != '%')) { | |
643 | cm_sep[j++] = CM[i++]; | |
644 | } | |
645 | cm_sep[j] = 0; | |
646 | } | |
647 | } | |
648 | ||
649 | j = 0; | |
650 | if (rc_spec == 2) { | |
651 | while (CM[i] && (j < 15)) { | |
652 | cm_end[j++] = CM[i++]; | |
653 | } | |
654 | } | |
655 | cm_end[j] = 0; | |
656 | } | |
657 | ||
658 | #endif |