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1 | /* |
2 | * Copyright (c) 1988 The Regents of the University of California. | |
3 | * All rights reserved. | |
4 | * | |
5 | * This code is derived from software contributed to Berkeley by | |
6 | * Timothy C. Stoehr. | |
7 | * | |
8 | * Redistribution and use in source and binary forms are permitted | |
9 | * provided that the above copyright notice and this paragraph are | |
10 | * duplicated in all such forms and that any documentation, | |
11 | * advertising materials, and other materials related to such | |
12 | * distribution and use acknowledge that the software was developed | |
13 | * by the University of California, Berkeley. The name of the | |
14 | * University may not be used to endorse or promote products derived | |
15 | * from this software without specific prior written permission. | |
16 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR | |
17 | * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED | |
18 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. | |
19 | */ | |
20 | ||
21 | #ifndef lint | |
22 | static char sccsid[] = "@(#)curses.c 5.2 (Berkeley) %G%"; | |
23 | #endif /* not lint */ | |
24 | ||
b3afadef KB |
25 | /* |
26 | * curses.c | |
27 | * | |
28 | * This source herein may be modified and/or distributed by anybody who | |
29 | * so desires, with the following restrictions: | |
30 | * 1.) No portion of this notice shall be removed. | |
31 | * 2.) Credit shall not be taken for the creation of this source. | |
32 | * 3.) This code is not to be traded, sold, or used for personal | |
33 | * gain or profit. | |
34 | * | |
35 | */ | |
36 | ||
b3afadef KB |
37 | #ifdef CURSES |
38 | ||
39 | /* The following is a curses emulation package suitable for the rogue program | |
40 | * in which it is included. No other suitability is claimed or suspected. | |
41 | * Only those routines currently needed by this rogue program are included. | |
42 | * This is being provided for those systems that don't have a suitable | |
43 | * curses package and want to run this rogue program. | |
44 | * | |
45 | * Compile the entire program with -DCURSES to incorporate this package. | |
46 | * | |
47 | * The following is NOT supported: | |
48 | * "%D", "%B", "%n", or "%>" inside a cursor motion (cm) termcap string. | |
49 | * Terminals in which the cursor motion addresses the row differently from | |
50 | * the column, as in ":cm=\E%2,%3" or ":cm=\EY%+x;%+y" | |
51 | * Termcap database stored in the TERMCAP environ variable as returned | |
52 | * from md_getenv(). Only the termcap file name can be stored there. | |
53 | * See the comments for md_getenv() in machdep.c. | |
54 | * Terminals without non-destructive backspace. Backspace (^H) is used | |
55 | * for cursor motion regardless of any termcap entries. | |
56 | * The ":tc=" termcap entry is ignored. | |
57 | * | |
58 | * Suggestions: | |
59 | * Use line-feed as your termcap "do" entry: ":do=^J", ":do=\012" or | |
60 | * ":do=\n" This will help cursor motion optimization. If line-feed | |
61 | * won't work, then a short escape sequence will do. | |
62 | */ | |
63 | ||
64 | #include <stdio.h> | |
65 | #include "rogue.h" | |
66 | ||
67 | boolean tc_tname(); | |
68 | ||
69 | #define BS 010 | |
70 | #define LF 012 | |
71 | #define CR 015 | |
72 | #define ESC '\033' | |
73 | #define TAB '\011' | |
74 | ||
75 | #define ST_MASK 0x80 | |
76 | #define BUFLEN 256 | |
77 | ||
78 | char terminal[DROWS][DCOLS]; | |
79 | char buffer[DROWS][DCOLS]; | |
80 | char *tc_file; | |
81 | ||
82 | char cm_esc[16]; | |
83 | char cm_sep[16]; | |
84 | char cm_end[16]; | |
85 | boolean cm_reverse = 0; | |
86 | boolean cm_two = 0; | |
87 | boolean cm_three = 0; | |
88 | boolean cm_char = 0; | |
89 | short cm_inc = 0; | |
90 | ||
91 | boolean screen_dirty; | |
92 | boolean lines_dirty[DROWS]; | |
93 | boolean buf_stand_out = 0; | |
94 | boolean term_stand_out = 0; | |
95 | ||
96 | int LINES = DROWS; | |
97 | int COLS = DCOLS; | |
98 | WINDOW scr_buf; | |
99 | WINDOW *curscr = &scr_buf; | |
100 | ||
101 | char *CL = (char *) 0; | |
102 | char *CM = (char *) 0; | |
103 | char *UC = (char *) 0; /* UP */ | |
104 | char *DO = (char *) 0; | |
105 | char *VS = ""; | |
106 | char *VE = ""; | |
107 | char *TI = ""; | |
108 | char *TE = ""; | |
109 | char *SO = ""; | |
110 | char *SE = ""; | |
111 | ||
112 | short cur_row; | |
113 | short cur_col; | |
114 | ||
115 | initscr() | |
116 | { | |
117 | clear(); | |
118 | get_term_info(); | |
119 | printf("%s%s", TI, VS); | |
120 | } | |
121 | ||
122 | endwin() | |
123 | { | |
124 | printf("%s%s", TE, VE); | |
125 | md_cbreak_no_echo_nonl(0); | |
126 | } | |
127 | ||
128 | move(row, col) | |
129 | short row, col; | |
130 | { | |
131 | curscr->_cury = row; | |
132 | curscr->_curx = col; | |
133 | screen_dirty = 1; | |
134 | } | |
135 | ||
136 | mvaddstr(row, col, str) | |
137 | short row, col; | |
138 | char *str; | |
139 | { | |
140 | move(row, col); | |
141 | addstr(str); | |
142 | } | |
143 | ||
144 | addstr(str) | |
145 | char *str; | |
146 | { | |
147 | while (*str) { | |
148 | addch((int) *str++); | |
149 | } | |
150 | } | |
151 | ||
152 | addch(ch) | |
153 | register int ch; | |
154 | { | |
155 | short row, col; | |
156 | ||
157 | row = curscr->_cury; | |
158 | col = curscr->_curx++; | |
159 | ||
160 | if (buf_stand_out) { | |
161 | ch |= ST_MASK; | |
162 | } | |
163 | buffer[row][col] = (char) ch; | |
164 | lines_dirty[row] = 1; | |
165 | screen_dirty = 1; | |
166 | } | |
167 | ||
168 | mvaddch(row, col, ch) | |
169 | short row, col; | |
170 | int ch; | |
171 | { | |
172 | move(row, col); | |
173 | addch(ch); | |
174 | } | |
175 | ||
176 | refresh() | |
177 | { | |
178 | register i, j, line; | |
179 | short old_row, old_col, first_row; | |
180 | ||
181 | if (screen_dirty) { | |
182 | ||
183 | old_row = curscr->_cury; | |
184 | old_col = curscr->_curx; | |
185 | first_row = cur_row; | |
186 | ||
187 | for (i = 0; i < DROWS; i++) { | |
188 | line = (first_row + i) % DROWS; | |
189 | if (lines_dirty[line]) { | |
190 | for (j = 0; j < DCOLS; j++) { | |
191 | if (buffer[line][j] != terminal[line][j]) { | |
192 | put_char_at(line, j, buffer[line][j]); | |
193 | } | |
194 | } | |
195 | lines_dirty[line] = 0; | |
196 | } | |
197 | } | |
198 | put_cursor(old_row, old_col); | |
199 | screen_dirty = 0; | |
200 | fflush(stdout); | |
201 | } | |
202 | } | |
203 | ||
204 | wrefresh(scr) | |
205 | WINDOW *scr; | |
206 | { | |
207 | short i, col; | |
208 | ||
209 | printf("%s", CL); | |
210 | cur_row = cur_col = 0; | |
211 | ||
212 | for (i = 0; i < DROWS; i++) { | |
213 | col = 0; | |
214 | while (col < DCOLS) { | |
215 | while ((col < DCOLS) && (buffer[i][col] == ' ')) { | |
216 | col++; | |
217 | } | |
218 | if (col < DCOLS) { | |
219 | put_cursor(i, col); | |
220 | } | |
221 | while ((col < DCOLS) && (buffer[i][col] != ' ')) { | |
222 | put_st_char((int) buffer[i][col]); | |
223 | cur_col++; | |
224 | col++; | |
225 | } | |
226 | } | |
227 | } | |
228 | put_cursor(curscr->_cury, curscr->_curx); | |
229 | fflush(stdout); | |
230 | scr = scr; /* make lint happy */ | |
231 | } | |
232 | ||
233 | mvinch(row, col) | |
234 | short row, col; | |
235 | { | |
236 | move(row, col); | |
237 | return((int) buffer[row][col]); | |
238 | } | |
239 | ||
240 | clear() | |
241 | { | |
242 | printf("%s", CL); | |
243 | fflush(stdout); | |
244 | cur_row = cur_col = 0; | |
245 | move(0, 0); | |
246 | clear_buffers(); | |
247 | } | |
248 | ||
249 | clrtoeol() | |
250 | { | |
251 | short row, col; | |
252 | ||
253 | row = curscr->_cury; | |
254 | ||
255 | for (col = curscr->_curx; col < DCOLS; col++) { | |
256 | buffer[row][col] = ' '; | |
257 | } | |
258 | lines_dirty[row] = 1; | |
259 | } | |
260 | ||
261 | standout() | |
262 | { | |
263 | buf_stand_out = 1; | |
264 | } | |
265 | ||
266 | standend() | |
267 | { | |
268 | buf_stand_out = 0; | |
269 | } | |
270 | ||
271 | crmode() | |
272 | { | |
273 | md_cbreak_no_echo_nonl(1); | |
274 | } | |
275 | ||
276 | noecho() | |
277 | { | |
278 | /* crmode() takes care of this */ | |
279 | } | |
280 | ||
281 | nonl() | |
282 | { | |
283 | /* crmode() takes care of this */ | |
284 | } | |
285 | ||
286 | clear_buffers() | |
287 | { | |
288 | register i, j; | |
289 | ||
290 | screen_dirty = 0; | |
291 | ||
292 | for (i = 0; i < DROWS; i++) { | |
293 | lines_dirty[i] = 0; | |
294 | for (j = 0; j < DCOLS; j++) { | |
295 | terminal[i][j] = ' '; | |
296 | buffer[i][j] = ' '; | |
297 | } | |
298 | } | |
299 | } | |
300 | ||
301 | put_char_at(row, col, ch) | |
302 | register row, col, ch; | |
303 | { | |
304 | put_cursor(row, col); | |
305 | put_st_char(ch); | |
306 | terminal[row][col] = (char) ch; | |
307 | cur_col++; | |
308 | } | |
309 | ||
310 | put_cursor(row, col) | |
311 | register row, col; | |
312 | { | |
313 | register i, rdif, cdif; | |
314 | short ch, t; | |
315 | ||
316 | rdif = (row > cur_row) ? row - cur_row : cur_row - row; | |
317 | cdif = (col > cur_col) ? col - cur_col : cur_col - col; | |
318 | ||
319 | if (((row > cur_row) && DO) || ((cur_row > row) && UC)) { | |
320 | if ((rdif < 4) && (cdif < 4)) { | |
321 | for (i = 0; i < rdif; i++) { | |
322 | printf("%s", ((row < cur_row) ? UC : DO)); | |
323 | } | |
324 | cur_row = row; | |
325 | if (col == cur_col) { | |
326 | return; | |
327 | } | |
328 | } | |
329 | } | |
330 | if (row == cur_row) { | |
331 | if (cdif <= 6) { | |
332 | for (i = 0; i < cdif; i++) { | |
333 | ch = (col < cur_col) ? BS : | |
334 | terminal[row][cur_col + i]; | |
335 | put_st_char((int) ch); | |
336 | } | |
337 | cur_row = row; | |
338 | cur_col = col; | |
339 | return; | |
340 | } | |
341 | } | |
342 | cur_row = row; | |
343 | cur_col = col; | |
344 | ||
345 | row += cm_inc; | |
346 | col += cm_inc; | |
347 | ||
348 | if (cm_reverse) { | |
349 | t = row; | |
350 | row = col; | |
351 | col = t; | |
352 | } | |
353 | if (cm_two) { | |
354 | printf("%s%02d%s%02d%s", cm_esc, row, cm_sep, col, cm_end); | |
355 | } else if (cm_three) { | |
356 | printf("%s%03d%s%03d%s", cm_esc, row, cm_sep, col, cm_end); | |
357 | } else if (cm_char) { | |
358 | printf("%s%c%s%c%s", cm_esc, row, cm_sep, col, cm_end); | |
359 | } else { | |
360 | printf("%s%d%s%d%s", cm_esc, row, cm_sep, col, cm_end); | |
361 | } | |
362 | } | |
363 | ||
364 | put_st_char(ch) | |
365 | register ch; | |
366 | { | |
367 | if ((ch & ST_MASK) && (!term_stand_out)) { | |
368 | ch &= ~ST_MASK; | |
369 | printf("%s%c", SO, ch); | |
370 | term_stand_out = 1; | |
371 | } else if ((!(ch & ST_MASK)) && term_stand_out) { | |
372 | printf("%s%c", SE, ch); | |
373 | term_stand_out = 0; | |
374 | } else { | |
375 | ch &= ~ST_MASK; | |
376 | putchar(ch); | |
377 | } | |
378 | } | |
379 | ||
380 | get_term_info() | |
381 | { | |
382 | FILE *fp; | |
383 | char *term, *tcf; | |
384 | char buf[BUFLEN]; | |
385 | ||
386 | if (tcf = md_getenv("TERMCAP")) { | |
387 | if (strlen(tcf) > 40) { | |
388 | clean_up("TERMCAP file name too long"); | |
389 | } | |
390 | tc_file = tcf; | |
391 | } else { | |
392 | if (!(tc_file = md_gdtcf())) { | |
393 | clean_up("I need a termcap file"); | |
394 | } | |
395 | } | |
396 | ||
397 | if (!(term = md_getenv("TERM"))) { | |
398 | clean_up("Cannot find TERM variable in environ"); | |
399 | } | |
400 | if ((fp = fopen(tc_file, "r")) == NULL) { | |
401 | sprintf(buf, "Cannot open TERMCAP file: %s", tc_file); | |
402 | clean_up(buf); | |
403 | } | |
404 | ||
405 | if (!tc_tname(fp, term, buf)) { | |
406 | sprintf(buf, "Cannot find TERM type: %s in TERMCAP file: %s", term, | |
407 | tc_file); | |
408 | clean_up(buf); | |
409 | } | |
410 | tc_gtdata(fp, buf); | |
411 | fclose(fp); | |
412 | } | |
413 | ||
414 | boolean | |
415 | tc_tname(fp, term, buf) | |
416 | FILE *fp; | |
417 | char *term; | |
418 | char *buf; | |
419 | { | |
420 | short i, j; | |
421 | boolean found = 0; | |
422 | char *fg; | |
423 | ||
424 | while (!found) { | |
425 | i = 0; | |
426 | fg = fgets(buf, BUFLEN, fp); | |
427 | if (fg != NULL) { | |
428 | if ( (buf[0] != '#') && (buf[0] != ' ') && (buf[0] != TAB) && | |
429 | (buf[0] != CR) && (buf[0] != LF)) { | |
430 | while (buf[i] && (!found)) { | |
431 | j = 0; | |
432 | while (buf[i] == term[j]) { | |
433 | i++; | |
434 | j++; | |
435 | } | |
436 | if ((!term[j]) && ((buf[i] == '|') || (buf[i] == ':'))) { | |
437 | found = 1; | |
438 | } else { | |
439 | while (buf[i] && (buf[i] != '|') && (buf[i] != ':')) { | |
440 | i++; | |
441 | } | |
442 | if (buf[i]) { | |
443 | i++; | |
444 | } | |
445 | } | |
446 | } | |
447 | } | |
448 | } else { | |
449 | break; | |
450 | } | |
451 | } | |
452 | return(found); | |
453 | } | |
454 | ||
455 | tc_gtdata(fp, buf) | |
456 | FILE *fp; | |
457 | char *buf; | |
458 | { | |
459 | short i; | |
460 | boolean first = 1; | |
461 | ||
462 | do { | |
463 | if (!first) { | |
464 | if ((buf[0] != TAB) && (buf[0] != ' ')) { | |
465 | break; | |
466 | } | |
467 | } | |
468 | first = 0; | |
469 | i = 0; | |
470 | while (buf[i]) { | |
471 | while (buf[i] && (buf[i] != ':')) { | |
472 | i++; | |
473 | } | |
474 | if (buf[i] == ':') { | |
475 | if (!strncmp(buf + i, ":cl=", 4)) { | |
476 | tc_gets(buf + i, &CL); | |
477 | } else if (!strncmp(buf + i, ":cm=", 4)) { | |
478 | tc_gets(buf + i, &CM); | |
479 | } else if (!strncmp(buf + i, ":up=", 4)) { | |
480 | tc_gets(buf + i, &UC); | |
481 | } else if (!strncmp(buf + i, ":do=", 4)) { | |
482 | tc_gets(buf + i, &DO); | |
483 | } else if (!strncmp(buf + i, ":vs=", 4)) { | |
484 | tc_gets(buf + i, &VS); | |
485 | } else if (!strncmp(buf + i, ":ve=", 4)) { | |
486 | tc_gets(buf + i, &VE); | |
487 | } else if (!strncmp(buf + i, ":ti=", 4)) { | |
488 | tc_gets(buf + i, &TI); | |
489 | } else if (!strncmp(buf + i, ":te=", 4)) { | |
490 | tc_gets(buf + i, &TE); | |
491 | } else if (!strncmp(buf + i, ":vs=", 4)) { | |
492 | tc_gets(buf + i, &VS); | |
493 | } else if (!strncmp(buf + i, ":ve=", 4)) { | |
494 | tc_gets(buf + i, &VE); | |
495 | } else if (!strncmp(buf + i, ":so=", 4)) { | |
496 | tc_gets(buf + i, &SO); | |
497 | } else if (!strncmp(buf + i, ":se=", 4)) { | |
498 | tc_gets(buf + i, &SE); | |
499 | } else if (!strncmp(buf + i, ":li#", 4)) { | |
500 | tc_gnum(buf + i, &LINES); | |
501 | } else if (!strncmp(buf + i, ":co#", 4)) { | |
502 | tc_gnum(buf + i, &COLS); | |
503 | } | |
504 | i++; | |
505 | } | |
506 | } | |
507 | } while (fgets(buf, BUFLEN, fp) != NULL); | |
508 | ||
509 | if ((!CM) || (!CL)) { | |
510 | clean_up("Terminal and termcap must have cm and cl"); | |
511 | } | |
512 | tc_cmget(); | |
513 | } | |
514 | ||
515 | tc_gets(ibuf, tcstr) | |
516 | char *ibuf; | |
517 | char **tcstr; | |
518 | { | |
519 | short i, j, k, n; | |
520 | char obuf[BUFLEN]; | |
521 | ||
522 | i = 4; | |
523 | j = 0; | |
524 | ||
525 | while (ibuf[i] && is_digit(ibuf[i])) { | |
526 | i++; | |
527 | } | |
528 | ||
529 | while (ibuf[i] && (ibuf[i] != ':')) { | |
530 | if (ibuf[i] == '\\') { | |
531 | i++; | |
532 | switch(ibuf[i]) { | |
533 | case 'E': | |
534 | obuf[j] = ESC; | |
535 | i++; | |
536 | break; | |
537 | case 'n': | |
538 | obuf[j] = LF; | |
539 | i++; | |
540 | break; | |
541 | case 'r': | |
542 | obuf[j] = CR; | |
543 | i++; | |
544 | break; | |
545 | case 'b': | |
546 | obuf[j] = BS; | |
547 | i++; | |
548 | break; | |
549 | case 't': | |
550 | obuf[j] = TAB; | |
551 | i++; | |
552 | break; | |
553 | case '0': | |
554 | case '1': | |
555 | case '2': | |
556 | case '3': | |
557 | case '4': | |
558 | case '5': | |
559 | case '6': | |
560 | case '7': | |
561 | case '8': | |
562 | case '9': | |
563 | n = 0; | |
564 | k = 0; | |
565 | while (k < 3 && ibuf[i] && is_digit(ibuf[i])) { | |
566 | n = (8 * n) + (ibuf[i] - '0'); | |
567 | i++; | |
568 | k++; | |
569 | } | |
570 | obuf[j] = (char) n; | |
571 | break; | |
572 | default: | |
573 | obuf[j] = ibuf[i]; | |
574 | i++; | |
575 | } | |
576 | } else if (ibuf[i] == '^') { | |
577 | obuf[j] = ibuf[i+1] - 64; | |
578 | i += 2; | |
579 | } else { | |
580 | obuf[j] = ibuf[i++]; | |
581 | } | |
582 | j++; | |
583 | } | |
584 | obuf[j] = 0; | |
585 | if (!(*tcstr = md_malloc(j + 1))) { | |
586 | clean_up("cannot alloc() memory"); | |
587 | } | |
588 | (void) strcpy(*tcstr, obuf); | |
589 | } | |
590 | ||
591 | tc_gnum(ibuf, n) | |
592 | char *ibuf; | |
593 | int *n; | |
594 | { | |
595 | short i; | |
596 | int r = 0; | |
597 | ||
598 | i = 4; | |
599 | ||
600 | while (is_digit(ibuf[i])) { | |
601 | r = (r * 10) + (ibuf[i] - '0'); | |
602 | i++; | |
603 | } | |
604 | *n = r; | |
605 | } | |
606 | ||
607 | tstp() | |
608 | { | |
609 | endwin(); | |
610 | md_tstp(); | |
611 | ||
612 | start_window(); | |
613 | printf("%s%s", TI, VS); | |
614 | wrefresh(curscr); | |
615 | md_slurp(); | |
616 | } | |
617 | ||
618 | tc_cmget() | |
619 | { | |
620 | short i = 0, j = 0, rc_spec = 0; | |
621 | ||
622 | while (CM[i] && (CM[i] != '%') && (j < 15)) { | |
623 | cm_esc[j++] = CM[i++]; | |
624 | } | |
625 | cm_esc[j] = 0; | |
626 | ||
627 | while (CM[i] && (rc_spec < 2)) { | |
628 | if (CM[i] == '%') { | |
629 | i++; | |
630 | switch(CM[i]) { | |
631 | case 'd': | |
632 | rc_spec++; | |
633 | break; | |
634 | case 'i': | |
635 | cm_inc = 1; | |
636 | break; | |
637 | case '2': | |
638 | cm_two = 1; | |
639 | rc_spec++; | |
640 | break; | |
641 | case '3': | |
642 | cm_three = 1; | |
643 | rc_spec++; | |
644 | break; | |
645 | case '.': | |
646 | cm_char = 1; | |
647 | rc_spec++; | |
648 | break; | |
649 | case 'r': | |
650 | cm_reverse = 1; | |
651 | break; | |
652 | case '+': | |
653 | i++; | |
654 | cm_inc = CM[i]; | |
655 | cm_char = 1; | |
656 | rc_spec++; | |
657 | break; | |
658 | } | |
659 | i++; | |
660 | } else { | |
661 | j = 0; | |
662 | while (CM[i] && (CM[i] != '%')) { | |
663 | cm_sep[j++] = CM[i++]; | |
664 | } | |
665 | cm_sep[j] = 0; | |
666 | } | |
667 | } | |
668 | ||
669 | j = 0; | |
670 | if (rc_spec == 2) { | |
671 | while (CM[i] && (j < 15)) { | |
672 | cm_end[j++] = CM[i++]; | |
673 | } | |
674 | } | |
675 | cm_end[j] = 0; | |
676 | } | |
677 | ||
678 | #endif |