Commit | Line | Data |
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27704fe4 BJ |
1 | /* Copyright (c) 1979 Regents of the University of California */ |
2 | #include "ex.h" | |
3 | #include "ex_tty.h" | |
4 | #include "ex_vis.h" | |
5 | ||
6 | /* | |
7 | * Terminal driving and line formatting routines. | |
8 | * Basic motion optimizations are done here as well | |
9 | * as formatting of lines (printing of control characters, | |
10 | * line numbering and the like). | |
11 | */ | |
12 | ||
13 | /* | |
14 | * The routines outchar, putchar and pline are actually | |
15 | * variables, and these variables point at the current definitions | |
16 | * of the routines. See the routine setflav. | |
17 | * We sometimes make outchar be routines which catch the characters | |
18 | * to be printed, e.g. if we want to see how long a line is. | |
19 | * During open/visual, outchar and putchar will be set to | |
20 | * routines in the file ex_vput.c (vputchar, vinschar, etc.). | |
21 | */ | |
22 | int (*Outchar)() = termchar; | |
23 | int (*Putchar)() = normchar; | |
24 | int (*Pline)() = normline; | |
25 | ||
26 | int (* | |
27 | setlist(t))() | |
28 | bool t; | |
29 | { | |
30 | register int (*P)(); | |
31 | ||
32 | listf = t; | |
33 | P = Putchar; | |
34 | Putchar = t ? listchar : normchar; | |
35 | return (P); | |
36 | } | |
37 | ||
38 | int (* | |
39 | setnumb(t))() | |
40 | bool t; | |
41 | { | |
42 | register int (*P)(); | |
43 | ||
44 | numberf = t; | |
45 | P = Pline; | |
46 | Pline = t ? numbline : normline; | |
47 | return (P); | |
48 | } | |
49 | ||
50 | /* | |
51 | * Format c for list mode; leave things in common | |
52 | * with normal print mode to be done by normchar. | |
53 | */ | |
54 | listchar(c) | |
55 | register short c; | |
56 | { | |
57 | ||
58 | c &= (TRIM|QUOTE); | |
59 | switch (c) { | |
60 | ||
61 | case '\t': | |
62 | case '\b': | |
63 | outchar('^'); | |
64 | c = ctlof(c); | |
65 | break; | |
66 | ||
67 | case '\n': | |
68 | break; | |
69 | ||
70 | case '\n' | QUOTE: | |
71 | outchar('$'); | |
72 | break; | |
73 | ||
74 | default: | |
75 | if (c & QUOTE) | |
76 | break; | |
77 | if (c < ' ' && c != '\n' || c == DELETE) | |
78 | outchar('^'), c = ctlof(c); | |
79 | break; | |
80 | } | |
81 | normchar(c); | |
82 | } | |
83 | ||
84 | /* | |
85 | * Format c for printing. Handle funnies of upper case terminals | |
86 | * and crocky hazeltines which don't have ~. | |
87 | */ | |
88 | normchar(c) | |
89 | register short c; | |
90 | { | |
91 | register char *colp; | |
92 | ||
93 | c &= (TRIM|QUOTE); | |
94 | if (c == '~' && HZ) { | |
95 | normchar('\\'); | |
96 | c = '^'; | |
97 | } | |
98 | if (c & QUOTE) | |
99 | switch (c) { | |
100 | ||
101 | case ' ' | QUOTE: | |
102 | case '\b' | QUOTE: | |
103 | break; | |
104 | ||
105 | case QUOTE: | |
106 | return; | |
107 | ||
108 | default: | |
109 | c &= TRIM; | |
110 | } | |
111 | else if (c < ' ' && (c != '\b' || !OS) && c != '\n' && c != '\t' || c == DELETE) | |
112 | putchar('^'), c = ctlof(c); | |
113 | else if (UPPERCASE) | |
114 | if (isupper(c)) { | |
115 | outchar('\\'); | |
116 | c = tolower(c); | |
117 | } else { | |
118 | colp = "({)}!|^~'`"; | |
119 | while (*colp++) | |
120 | if (c == *colp++) { | |
121 | outchar('\\'); | |
122 | c = colp[-2]; | |
123 | break; | |
124 | } | |
125 | } | |
126 | outchar(c); | |
127 | } | |
128 | ||
129 | /* | |
130 | * Print a line with a number. | |
131 | */ | |
132 | numbline(i) | |
133 | int i; | |
134 | { | |
135 | ||
136 | if (shudclob) | |
137 | slobber(' '); | |
138 | printf("%6d ", i); | |
139 | normline(); | |
140 | } | |
141 | ||
142 | /* | |
143 | * Normal line output, no numbering. | |
144 | */ | |
145 | normline() | |
146 | { | |
147 | register char *cp; | |
148 | ||
149 | if (shudclob) | |
150 | slobber(linebuf[0]); | |
151 | /* pdp-11 doprnt is not reentrant so can't use "printf" here | |
152 | in case we are tracing */ | |
153 | for (cp = linebuf; *cp;) | |
154 | putchar(*cp++); | |
155 | if (!inopen) | |
156 | putchar('\n' | QUOTE); | |
157 | } | |
158 | ||
159 | /* | |
160 | * Given c at the beginning of a line, determine whether | |
161 | * the printing of the line will erase or otherwise obliterate | |
162 | * the prompt which was printed before. If it won't, do it now. | |
163 | */ | |
164 | slobber(c) | |
165 | int c; | |
166 | { | |
167 | ||
168 | shudclob = 0; | |
169 | switch (c) { | |
170 | ||
171 | case '\t': | |
172 | if (Putchar == listchar) | |
173 | return; | |
174 | break; | |
175 | ||
176 | default: | |
177 | return; | |
178 | ||
179 | case ' ': | |
180 | case 0: | |
181 | break; | |
182 | } | |
183 | if (OS) | |
184 | return; | |
185 | flush(); | |
186 | putch(' '); | |
187 | if (BC) | |
188 | tputs(BC, 0, putch); | |
189 | else | |
190 | putch('\b'); | |
191 | } | |
192 | ||
193 | /* | |
194 | * The output buffer is initialized with a useful error | |
195 | * message so we don't have to keep it in data space. | |
196 | */ | |
197 | static char linb[66] = { | |
198 | 'E', 'r', 'r', 'o', 'r', ' ', 'm', 'e', 's', 's', 'a', 'g', 'e', ' ', | |
199 | 'f', 'i', 'l', 'e', ' ', 'n', 'o', 't', ' ', | |
200 | 'a', 'v', 'a', 'i', 'l', 'a', 'b', 'l', 'e', '\n', 0 | |
201 | }; | |
202 | static char *linp = linb + 33; | |
203 | ||
204 | /* | |
205 | * Phadnl records when we have already had a complete line ending with \n. | |
206 | * If another line starts without a flush, and the terminal suggests it, | |
207 | * we switch into -nl mode so that we can send lineffeeds to avoid | |
208 | * a lot of spacing. | |
209 | */ | |
210 | static bool phadnl; | |
211 | ||
212 | /* | |
213 | * Indirect to current definition of putchar. | |
214 | */ | |
215 | putchar(c) | |
216 | int c; | |
217 | { | |
218 | ||
219 | (*Putchar)(c); | |
220 | } | |
221 | ||
222 | /* | |
223 | * Termchar routine for command mode. | |
224 | * Watch for possible switching to -nl mode. | |
225 | * Otherwise flush into next level of buffering when | |
226 | * small buffer fills or at a newline. | |
227 | */ | |
228 | termchar(c) | |
229 | int c; | |
230 | { | |
231 | ||
232 | if (pfast == 0 && phadnl) | |
233 | pstart(); | |
234 | if (c == '\n') | |
235 | phadnl = 1; | |
236 | else if (linp >= &linb[63]) | |
237 | flush1(); | |
238 | *linp++ = c; | |
239 | if (linp >= &linb[63]) { | |
240 | fgoto(); | |
241 | flush1(); | |
242 | } | |
243 | } | |
244 | ||
245 | flush() | |
246 | { | |
247 | ||
248 | flush1(); | |
249 | flush2(); | |
250 | } | |
251 | ||
252 | /* | |
253 | * Flush from small line buffer into output buffer. | |
254 | * Work here is destroying motion into positions, and then | |
255 | * letting fgoto do the optimized motion. | |
256 | */ | |
257 | flush1() | |
258 | { | |
259 | register char *lp; | |
260 | register short c; | |
261 | ||
262 | *linp = 0; | |
263 | lp = linb; | |
264 | while (*lp) | |
265 | switch (c = *lp++) { | |
266 | ||
267 | case '\r': | |
268 | destline += destcol / COLUMNS; | |
269 | destcol = 0; | |
270 | continue; | |
271 | ||
272 | case '\b': | |
273 | if (destcol) | |
274 | destcol--; | |
275 | continue; | |
276 | ||
277 | case ' ': | |
278 | destcol++; | |
279 | continue; | |
280 | ||
281 | case '\t': | |
282 | destcol += value(TABSTOP) - destcol % value(TABSTOP); | |
283 | continue; | |
284 | ||
285 | case '\n': | |
286 | destline += destcol / COLUMNS + 1; | |
287 | if (destcol != 0 && destcol % COLUMNS == 0) | |
288 | destline--; | |
289 | destcol = 0; | |
290 | continue; | |
291 | ||
292 | default: | |
293 | fgoto(); | |
294 | for (;;) { | |
295 | if (AM == 0 && outcol == COLUMNS) | |
296 | fgoto(); | |
297 | c &= TRIM; | |
298 | putch(c); | |
299 | if (c == '\b') { | |
300 | outcol--; | |
301 | destcol--; | |
302 | } else if (c >= ' ' && c != DELETE) { | |
303 | outcol++; | |
304 | destcol++; | |
305 | if (XN && outcol % COLUMNS == 0) | |
306 | putch('\n'); | |
307 | } | |
308 | c = *lp++; | |
309 | if (c <= ' ') | |
310 | break; | |
311 | } | |
312 | --lp; | |
313 | continue; | |
314 | } | |
315 | linp = linb; | |
316 | } | |
317 | ||
318 | flush2() | |
319 | { | |
320 | ||
321 | fgoto(); | |
322 | flusho(); | |
323 | pstop(); | |
324 | } | |
325 | ||
326 | /* | |
327 | * Sync the position of the output cursor. | |
328 | * Most work here is rounding for terminal boundaries getting the | |
329 | * column position implied by wraparound or the lack thereof and | |
330 | * rolling up the screen to get destline on the screen. | |
331 | */ | |
332 | fgoto() | |
333 | { | |
334 | register int l, c; | |
335 | ||
336 | if (destcol > COLUMNS - 1) { | |
337 | destline += destcol / COLUMNS; | |
338 | destcol %= COLUMNS; | |
339 | } | |
340 | if (outcol > COLUMNS - 1) { | |
341 | l = (outcol + 1) / COLUMNS; | |
342 | outline += l; | |
343 | outcol %= COLUMNS; | |
344 | if (AM == 0) { | |
345 | while (l > 0) { | |
346 | if (pfast) | |
347 | putch('\r'); | |
348 | putch('\n'); | |
349 | l--; | |
350 | } | |
351 | outcol = 0; | |
352 | } | |
353 | if (outline > LINES - 1) { | |
354 | destline -= outline - (LINES - 1); | |
355 | outline = LINES - 1; | |
356 | } | |
357 | } | |
358 | if (destline > LINES - 1) { | |
359 | l = destline; | |
360 | destline = LINES - 1; | |
361 | if (outline < LINES - 1) { | |
362 | c = destcol; | |
363 | if (pfast == 0 && (!CA || holdcm)) | |
364 | destcol = 0; | |
365 | fgoto(); | |
366 | destcol = c; | |
367 | } | |
368 | while (l > LINES - 1) { | |
369 | putch('\n'); | |
370 | l--; | |
371 | if (pfast == 0) | |
372 | outcol = 0; | |
373 | } | |
374 | } | |
375 | if (destline < outline && !(CA && !holdcm || UP != NOSTR)) | |
376 | destline = outline; | |
377 | if (CA && !holdcm) | |
378 | if (plod(costCM) > 0) | |
379 | plod(0); | |
380 | else | |
381 | tputs(tgoto(CM, destcol, destline), 0, putch); | |
382 | else | |
383 | plod(0); | |
384 | outline = destline; | |
385 | outcol = destcol; | |
386 | } | |
387 | ||
388 | /* | |
389 | * Tab to column col by flushing and then setting destcol. | |
390 | * Used by "set all". | |
391 | */ | |
392 | tab(col) | |
393 | int col; | |
394 | { | |
395 | ||
396 | flush1(); | |
397 | destcol = col; | |
398 | } | |
399 | ||
400 | /* | |
401 | * Move (slowly) to destination. | |
402 | * Hard thing here is using home cursor on really deficient terminals. | |
403 | * Otherwise just use cursor motions, hacking use of tabs and overtabbing | |
404 | * and backspace. | |
405 | */ | |
406 | ||
407 | static int plodcnt, plodflg; | |
408 | ||
409 | plodput(c) | |
410 | { | |
411 | ||
412 | if (plodflg) | |
413 | plodcnt--; | |
414 | else | |
415 | putch(c); | |
416 | } | |
417 | ||
418 | plod(cnt) | |
419 | { | |
420 | register int i, j, k; | |
421 | register int soutcol, soutline; | |
422 | ||
423 | plodcnt = plodflg = cnt; | |
424 | soutcol = outcol; | |
425 | soutline = outline; | |
426 | if (HO) { | |
427 | if (GT) | |
428 | i = (destcol / value(HARDTABS)) + (destcol % value(HARDTABS)); | |
429 | else | |
430 | i = destcol; | |
431 | if (destcol >= outcol) { | |
432 | j = destcol / value(HARDTABS) - outcol / value(HARDTABS); | |
433 | if (GT && j) | |
434 | j += destcol % value(HARDTABS); | |
435 | else | |
436 | j = destcol - outcol; | |
437 | } else | |
438 | if (outcol - destcol <= i && (BS || BC)) | |
439 | i = j = outcol - destcol; | |
440 | else | |
441 | j = i + 1; | |
442 | k = outline - destline; | |
443 | if (k < 0) | |
444 | k = -k; | |
445 | j += k; | |
446 | if (i + destline < j) { | |
447 | tputs(HO, 0, plodput); | |
448 | outcol = outline = 0; | |
449 | } else if (LL) { | |
450 | k = (LINES - 1) - destline; | |
451 | if (i + k + 2 < j) { | |
452 | tputs(LL, 0, plodput); | |
453 | outcol = 0; | |
454 | outline = LINES - 1; | |
455 | } | |
456 | } | |
457 | } | |
458 | if (GT) | |
459 | i = destcol % value(HARDTABS) + destcol / value(HARDTABS); | |
460 | else | |
461 | i = destcol; | |
462 | /* | |
463 | if (BT && outcol > destcol && (j = (((outcol+7) & ~7) - destcol - 1) >> 3)) { | |
464 | j *= (k = strlen(BT)); | |
465 | if ((k += (destcol&7)) > 4) | |
466 | j += 8 - (destcol&7); | |
467 | else | |
468 | j += k; | |
469 | } else | |
470 | */ | |
471 | j = outcol - destcol; | |
472 | /* | |
473 | * If we will later need a \n which will turn into a \r\n by | |
474 | * the system or the terminal, then don't bother to try to \r. | |
475 | */ | |
476 | if ((NONL || !pfast) && outline < destline) | |
477 | goto dontcr; | |
478 | /* | |
479 | * If the terminal will do a \r\n and there isn't room for it, | |
480 | * then we can't afford a \r. | |
481 | */ | |
482 | if (NC && outline >= destline) | |
483 | goto dontcr; | |
484 | /* | |
485 | * If it will be cheaper, or if we can't back up, then send | |
486 | * a return preliminarily. | |
487 | */ | |
488 | if (j > i + 1 || outcol > destcol && !BS && !BC) { | |
489 | plodput('\r'); | |
490 | if (NC) { | |
491 | plodput('\n'); | |
492 | outline++; | |
493 | } | |
494 | outcol = 0; | |
495 | } | |
496 | dontcr: | |
497 | while (outline < destline) { | |
498 | outline++; | |
499 | plodput('\n'); | |
500 | if (plodcnt < 0) | |
501 | goto out; | |
502 | if (NONL || pfast == 0) | |
503 | outcol = 0; | |
504 | } | |
505 | if (BT) | |
506 | k = strlen(BT); | |
507 | while (outcol > destcol) { | |
508 | if (plodcnt < 0) | |
509 | goto out; | |
510 | /* | |
511 | if (BT && !insmode && outcol - destcol > 4+k) { | |
512 | tputs(BT, 0, plodput); | |
513 | outcol--; | |
514 | outcol &= ~7; | |
515 | continue; | |
516 | } | |
517 | */ | |
518 | outcol--; | |
519 | if (BC) | |
520 | tputs(BC, 0, plodput); | |
521 | else | |
522 | plodput('\b'); | |
523 | } | |
524 | while (outline > destline) { | |
525 | outline--; | |
526 | tputs(UP, 0, plodput); | |
527 | if (plodcnt < 0) | |
528 | goto out; | |
529 | } | |
530 | if (GT && !insmode && destcol - outcol > 1) { | |
531 | for (;;) { | |
532 | i = (outcol / value(HARDTABS) + 1) * value(HARDTABS); | |
533 | if (i > destcol) | |
534 | break; | |
535 | if (TA) | |
536 | tputs(TA, 0, plodput); | |
537 | else | |
538 | plodput('\t'); | |
539 | outcol = i; | |
540 | } | |
541 | if (destcol - outcol > 4 && i < COLUMNS && (BC || BS)) { | |
542 | if (TA) | |
543 | tputs(TA, 0, plodput); | |
544 | else | |
545 | plodput('\t'); | |
546 | outcol = i; | |
547 | while (outcol > destcol) { | |
548 | outcol--; | |
549 | if (BC) | |
550 | tputs(BC, 0, plodput); | |
551 | else | |
552 | plodput('\b'); | |
553 | } | |
554 | } | |
555 | } | |
556 | while (outcol < destcol) { | |
557 | if (inopen && ND) | |
558 | tputs(ND, 0, plodput); | |
559 | else | |
560 | plodput(' '); | |
561 | outcol++; | |
562 | if (plodcnt < 0) | |
563 | goto out; | |
564 | } | |
565 | out: | |
566 | if (plodflg) { | |
567 | outcol = soutcol; | |
568 | outline = soutline; | |
569 | } | |
570 | return(plodcnt); | |
571 | } | |
572 | ||
573 | /* | |
574 | * An input line arrived. | |
575 | * Calculate new (approximate) screen line position. | |
576 | * Approximate because kill character echoes newline with | |
577 | * no feedback and also because of long input lines. | |
578 | */ | |
579 | noteinp() | |
580 | { | |
581 | ||
582 | outline++; | |
583 | if (outline > LINES - 1) | |
584 | outline = LINES - 1; | |
585 | destline = outline; | |
586 | destcol = outcol = 0; | |
587 | } | |
588 | ||
589 | /* | |
590 | * Something weird just happened and we | |
591 | * lost track of whats happening out there. | |
592 | * Since we cant, in general, read where we are | |
593 | * we just reset to some known state. | |
594 | * On cursor addressible terminals setting to unknown | |
595 | * will force a cursor address soon. | |
596 | */ | |
597 | termreset() | |
598 | { | |
599 | ||
600 | endim(); | |
601 | if (TI) /* otherwise it flushes anyway, and 'set tty=dumb' vomits */ | |
602 | putpad(TI); /*adb change -- emit terminal initial sequence */ | |
603 | destcol = 0; | |
604 | destline = LINES - 1; | |
605 | if (CA) { | |
606 | outcol = UKCOL; | |
607 | outline = UKCOL; | |
608 | } else { | |
609 | outcol = destcol; | |
610 | outline = destline; | |
611 | } | |
612 | } | |
613 | ||
614 | /* | |
615 | * Low level buffering, with the ability to drain | |
616 | * buffered output without printing it. | |
617 | */ | |
618 | char *obp = obuf; | |
619 | ||
620 | draino() | |
621 | { | |
622 | ||
623 | obp = obuf; | |
624 | } | |
625 | ||
626 | flusho() | |
627 | { | |
628 | ||
629 | if (obp != obuf) { | |
630 | write(1, obuf, obp - obuf); | |
631 | obp = obuf; | |
632 | } | |
633 | } | |
634 | ||
635 | putnl() | |
636 | { | |
637 | ||
638 | putchar('\n'); | |
639 | } | |
640 | ||
641 | putS(cp) | |
642 | char *cp; | |
643 | { | |
644 | ||
645 | if (cp == NULL) | |
646 | return; | |
647 | while (*cp) | |
648 | putch(*cp++); | |
649 | } | |
650 | ||
651 | ||
652 | putch(c) | |
653 | int c; | |
654 | { | |
655 | ||
656 | *obp++ = c; | |
657 | if (obp >= &obuf[sizeof obuf]) | |
658 | flusho(); | |
659 | } | |
660 | ||
661 | /* | |
662 | * Miscellaneous routines related to output. | |
663 | */ | |
664 | ||
665 | /* | |
666 | * Cursor motion. | |
667 | */ | |
668 | char * | |
669 | cgoto() | |
670 | { | |
671 | ||
672 | return (tgoto(CM, destcol, destline)); | |
673 | } | |
674 | ||
675 | /* | |
676 | * Put with padding | |
677 | */ | |
678 | putpad(cp) | |
679 | char *cp; | |
680 | { | |
681 | ||
682 | flush(); | |
683 | tputs(cp, 0, putch); | |
684 | } | |
685 | ||
686 | /* | |
687 | * Set output through normal command mode routine. | |
688 | */ | |
689 | setoutt() | |
690 | { | |
691 | ||
692 | Outchar = termchar; | |
693 | } | |
694 | ||
695 | /* | |
696 | * Printf (temporarily) in list mode. | |
697 | */ | |
698 | /*VARARGS2*/ | |
699 | lprintf(cp, dp) | |
700 | char *cp, *dp; | |
701 | { | |
702 | register int (*P)(); | |
703 | ||
704 | P = setlist(1); | |
705 | printf(cp, dp); | |
706 | Putchar = P; | |
707 | } | |
708 | ||
709 | /* | |
710 | * Newline + flush. | |
711 | */ | |
712 | putNFL() | |
713 | { | |
714 | ||
715 | putnl(); | |
716 | flush(); | |
717 | } | |
718 | ||
719 | /* | |
720 | * Try to start -nl mode. | |
721 | */ | |
722 | pstart() | |
723 | { | |
724 | ||
725 | if (NONL) | |
726 | return; | |
727 | if (!value(OPTIMIZE)) | |
728 | return; | |
729 | if (ruptible == 0 || pfast) | |
730 | return; | |
731 | fgoto(); | |
732 | flusho(); | |
733 | pfast = 1; | |
734 | normtty++; | |
735 | tty.sg_flags = normf & ~(ECHO|XTABS|CRMOD); | |
736 | sTTY(1); | |
737 | } | |
738 | ||
739 | /* | |
740 | * Stop -nl mode. | |
741 | */ | |
742 | pstop() | |
743 | { | |
744 | ||
745 | if (inopen) | |
746 | return; | |
747 | phadnl = 0; | |
748 | linp = linb; | |
749 | draino(); | |
750 | normal(normf); | |
751 | pfast &= ~1; | |
752 | } | |
753 | ||
754 | /* | |
755 | * Prep tty for open mode. | |
756 | */ | |
757 | ostart() | |
758 | { | |
759 | int f; | |
760 | ||
761 | if (!intty) | |
762 | error("Open and visual must be used interactively"); | |
763 | gTTY(1); | |
764 | normtty++; | |
765 | f = tty.sg_flags; | |
766 | #ifdef CBREAK | |
767 | tty.sg_flags = (normf &~ (ECHO|XTABS|CRMOD)) | CBREAK; | |
768 | #else | |
769 | tty.sg_flags = (normf &~ (ECHO|XTABS|CRMOD)) | RAW; | |
770 | #endif | |
771 | #ifdef TIOCGETC | |
772 | nttyc.t_quitc = nttyc.t_startc = nttyc.t_stopc = '\377'; | |
773 | #endif | |
774 | sTTY(1); | |
775 | putpad(VS); | |
776 | putpad(KS); | |
777 | pfast |= 2; | |
778 | return (f); | |
779 | } | |
780 | ||
781 | /* | |
782 | * Stop open, restoring tty modes. | |
783 | */ | |
784 | ostop(f) | |
785 | int f; | |
786 | { | |
787 | ||
788 | pfast = (f & CRMOD) == 0; | |
789 | termreset(), fgoto(), flusho(); | |
790 | normal(f); | |
791 | putpad(VE); | |
792 | putpad(KE); | |
793 | } | |
794 | ||
795 | #ifndef CBREAK | |
796 | /* | |
797 | * Into cooked mode for interruptibility. | |
798 | */ | |
799 | vcook() | |
800 | { | |
801 | ||
802 | tty.sg_flags &= ~RAW; | |
803 | sTTY(1); | |
804 | } | |
805 | ||
806 | /* | |
807 | * Back into raw mode. | |
808 | */ | |
809 | vraw() | |
810 | { | |
811 | ||
812 | tty.sg_flags |= RAW; | |
813 | sTTY(1); | |
814 | } | |
815 | #endif | |
816 | ||
817 | /* | |
818 | * Restore flags to normal state f. | |
819 | */ | |
820 | normal(f) | |
821 | int f; | |
822 | { | |
823 | ||
824 | if (normtty > 0) { | |
825 | setty(f); | |
826 | normtty--; | |
827 | } | |
828 | } | |
829 | ||
830 | /* | |
831 | * Straight set of flags to state f. | |
832 | */ | |
833 | setty(f) | |
834 | int f; | |
835 | { | |
836 | register int ot = tty.sg_flags; | |
837 | ||
838 | #ifdef TIOCGETC | |
839 | if (f == normf) | |
840 | nttyc = ottyc; | |
841 | else | |
842 | nttyc.t_quitc = nttyc.t_startc = nttyc.t_stopc = '\377'; | |
843 | #endif | |
844 | tty.sg_flags = f; | |
845 | sTTY(1); | |
846 | return (ot); | |
847 | } | |
848 | ||
849 | gTTY(i) | |
850 | int i; | |
851 | { | |
852 | ||
853 | ignore(gtty(i, &tty)); | |
854 | #ifdef TIOCGETC | |
855 | ioctl(i, TIOCGETC, &ottyc); | |
856 | nttyc = ottyc; | |
857 | #endif | |
858 | } | |
859 | ||
860 | sTTY(i) | |
861 | int i; | |
862 | { | |
863 | ||
864 | /* | |
865 | * Bug in USG tty driver, put out a null char as a patch. | |
866 | */ | |
867 | #ifdef USG | |
868 | if (tty.sg_ospeed == B1200) | |
869 | write(1, "", 1); | |
870 | #endif | |
871 | #ifdef TIOCSETN | |
872 | ioctl(i, TIOCSETN, &tty); | |
873 | #else | |
874 | stty(i, &tty); | |
875 | #endif | |
876 | #ifdef TIOCSETC | |
877 | ioctl(i, TIOCSETC, &nttyc); | |
878 | #endif | |
879 | } | |
880 | ||
881 | /* | |
882 | * Print newline, or blank if in open/visual | |
883 | */ | |
884 | noonl() | |
885 | { | |
886 | ||
887 | putchar(Outchar != termchar ? ' ' : '\n'); | |
888 | } |