Commit | Line | Data |
---|---|---|
299f2784 MH |
1 | /* Copyright (c) 1981 Regents of the University of California */ |
2 | static char *sccsid = "@(#)ex_vget.c 6.3 %G%"; | |
e213a660 MH |
3 | #include "ex.h" |
4 | #include "ex_tty.h" | |
5 | #include "ex_vis.h" | |
6 | ||
7 | /* | |
8 | * Input routines for open/visual. | |
9 | * We handle upper case only terminals in visual and reading from the | |
10 | * echo area here as well as notification on large changes | |
11 | * which appears in the echo area. | |
12 | */ | |
13 | ||
14 | /* | |
15 | * Return the key. | |
16 | */ | |
17 | ungetkey(c) | |
299f2784 | 18 | int c; /* mjm: char --> int */ |
e213a660 MH |
19 | { |
20 | ||
21 | if (Peekkey != ATTN) | |
22 | Peekkey = c; | |
23 | } | |
24 | ||
25 | /* | |
26 | * Return a keystroke, but never a ^@. | |
27 | */ | |
28 | getkey() | |
29 | { | |
299f2784 | 30 | register int c; /* mjm: char --> int */ |
e213a660 MH |
31 | |
32 | do { | |
33 | c = getbr(); | |
34 | if (c==0) | |
35 | beep(); | |
36 | } while (c == 0); | |
37 | return (c); | |
38 | } | |
39 | ||
40 | /* | |
41 | * Tell whether next keystroke would be a ^@. | |
42 | */ | |
43 | peekbr() | |
44 | { | |
45 | ||
46 | Peekkey = getbr(); | |
47 | return (Peekkey == 0); | |
48 | } | |
49 | ||
50 | short precbksl; | |
51 | ||
52 | /* | |
53 | * Get a keystroke, including a ^@. | |
54 | * If an key was returned with ungetkey, that | |
55 | * comes back first. Next comes unread input (e.g. | |
56 | * from repeating commands with .), and finally new | |
57 | * keystrokes. | |
58 | * | |
59 | * The hard work here is in mapping of \ escaped | |
60 | * characters on upper case only terminals. | |
61 | */ | |
62 | getbr() | |
63 | { | |
64 | char ch; | |
65 | register int c, d; | |
66 | register char *colp; | |
299f2784 | 67 | int cnt; |
d266c416 MH |
68 | #define BEEHIVE |
69 | #ifdef BEEHIVE | |
70 | static char Peek2key; | |
71 | #endif | |
72 | extern short slevel, ttyindes; | |
e213a660 MH |
73 | |
74 | getATTN: | |
75 | if (Peekkey) { | |
76 | c = Peekkey; | |
77 | Peekkey = 0; | |
78 | return (c); | |
79 | } | |
d266c416 MH |
80 | #ifdef BEEHIVE |
81 | if (Peek2key) { | |
82 | c = Peek2key; | |
83 | Peek2key = 0; | |
84 | return (c); | |
85 | } | |
86 | #endif | |
e213a660 MH |
87 | if (vglobp) { |
88 | if (*vglobp) | |
89 | return (lastvgk = *vglobp++); | |
90 | lastvgk = 0; | |
91 | return (ESCAPE); | |
92 | } | |
93 | if (vmacp) { | |
94 | if (*vmacp) | |
95 | return(*vmacp++); | |
96 | /* End of a macro or set of nested macros */ | |
97 | vmacp = 0; | |
44232d5b MH |
98 | if (inopen == -1) /* don't screw up undo for esc esc */ |
99 | vundkind = VMANY; | |
e213a660 | 100 | inopen = 1; /* restore old setting now that macro done */ |
d266c416 | 101 | vch_mac = VC_NOTINMAC; |
e213a660 | 102 | } |
e213a660 MH |
103 | flusho(); |
104 | again: | |
299f2784 | 105 | if ((c=read(slevel == 0 ? 0 : ttyindes, &ch, 1)) != 1) { |
e213a660 MH |
106 | if (errno == EINTR) |
107 | goto getATTN; | |
108 | error("Input read error"); | |
109 | } | |
110 | c = ch & TRIM; | |
d266c416 MH |
111 | #ifdef BEEHIVE |
112 | if (XB && slevel==0 && c == ESCAPE) { | |
113 | if (read(0, &Peek2key, 1) != 1) | |
114 | goto getATTN; | |
115 | Peek2key &= TRIM; | |
116 | switch (Peek2key) { | |
117 | case 'C': /* SPOW mode sometimes sends \EC for space */ | |
118 | c = ' '; | |
119 | Peek2key = 0; | |
120 | break; | |
121 | case 'q': /* f2 -> ^C */ | |
122 | c = CTRL(c); | |
123 | Peek2key = 0; | |
124 | break; | |
125 | case 'p': /* f1 -> esc */ | |
126 | Peek2key = 0; | |
127 | break; | |
128 | } | |
129 | } | |
130 | #endif | |
e213a660 MH |
131 | |
132 | #ifdef UCVISUAL | |
133 | /* | |
134 | * The algorithm here is that of the UNIX kernel. | |
135 | * See the description in the programmers manual. | |
136 | */ | |
137 | if (UPPERCASE) { | |
138 | if (isupper(c)) | |
139 | c = tolower(c); | |
140 | if (c == '\\') { | |
141 | if (precbksl < 2) | |
142 | precbksl++; | |
143 | if (precbksl == 1) | |
144 | goto again; | |
145 | } else if (precbksl) { | |
146 | d = 0; | |
147 | if (islower(c)) | |
148 | d = toupper(c); | |
149 | else { | |
150 | colp = "({)}!|^~'~"; | |
151 | while (d = *colp++) | |
152 | if (d == c) { | |
153 | d = *colp++; | |
154 | break; | |
155 | } else | |
156 | colp++; | |
157 | } | |
158 | if (precbksl == 2) { | |
159 | if (!d) { | |
160 | Peekkey = c; | |
161 | precbksl = 0; | |
162 | c = '\\'; | |
163 | } | |
164 | } else if (d) | |
165 | c = d; | |
166 | else { | |
167 | Peekkey = c; | |
168 | precbksl = 0; | |
169 | c = '\\'; | |
170 | } | |
171 | } | |
172 | if (c != '\\') | |
173 | precbksl = 0; | |
174 | } | |
175 | #endif | |
176 | #ifdef TRACE | |
177 | if (trace) { | |
178 | if (!techoin) { | |
179 | tfixnl(); | |
180 | techoin = 1; | |
181 | fprintf(trace, "*** Input: "); | |
182 | } | |
183 | tracec(c); | |
184 | } | |
185 | #endif | |
186 | lastvgk = 0; | |
187 | return (c); | |
188 | } | |
189 | ||
190 | /* | |
191 | * Get a key, but if a delete, quit or attention | |
192 | * is typed return 0 so we will abort a partial command. | |
193 | */ | |
194 | getesc() | |
195 | { | |
196 | register int c; | |
197 | ||
198 | c = getkey(); | |
199 | switch (c) { | |
200 | ||
887e3e0d MH |
201 | case CTRL(v): |
202 | case CTRL(q): | |
203 | c = getkey(); | |
204 | return (c); | |
205 | ||
e213a660 MH |
206 | case ATTN: |
207 | case QUIT: | |
208 | ungetkey(c); | |
209 | return (0); | |
210 | ||
211 | case ESCAPE: | |
212 | return (0); | |
213 | } | |
214 | return (c); | |
215 | } | |
216 | ||
217 | /* | |
218 | * Peek at the next keystroke. | |
219 | */ | |
220 | peekkey() | |
221 | { | |
222 | ||
223 | Peekkey = getkey(); | |
224 | return (Peekkey); | |
225 | } | |
226 | ||
227 | /* | |
228 | * Read a line from the echo area, with single character prompt c. | |
229 | * A return value of 1 means the user blewit or blewit away. | |
230 | */ | |
231 | readecho(c) | |
232 | char c; | |
233 | { | |
234 | register char *sc = cursor; | |
235 | register int (*OP)(); | |
236 | bool waste; | |
237 | register int OPeek; | |
238 | ||
239 | if (WBOT == WECHO) | |
240 | vclean(); | |
241 | else | |
242 | vclrech(0); | |
243 | splitw++; | |
244 | vgoto(WECHO, 0); | |
245 | putchar(c); | |
246 | vclreol(); | |
247 | vgoto(WECHO, 1); | |
248 | cursor = linebuf; linebuf[0] = 0; genbuf[0] = c; | |
249 | if (peekbr()) { | |
250 | if (!INS[0] || (INS[0] & (QUOTE|TRIM)) == OVERBUF) | |
251 | goto blewit; | |
252 | vglobp = INS; | |
253 | } | |
254 | OP = Pline; Pline = normline; | |
04379bab | 255 | ignore(vgetline(0, genbuf + 1, &waste, c)); |
d266c416 MH |
256 | if (Outchar == termchar) |
257 | putchar('\n'); | |
e213a660 MH |
258 | vscrap(); |
259 | Pline = OP; | |
260 | if (Peekkey != ATTN && Peekkey != QUIT && Peekkey != CTRL(h)) { | |
261 | cursor = sc; | |
262 | vclreol(); | |
263 | return (0); | |
264 | } | |
265 | blewit: | |
266 | OPeek = Peekkey==CTRL(h) ? 0 : Peekkey; Peekkey = 0; | |
267 | splitw = 0; | |
268 | vclean(); | |
269 | vshow(dot, NOLINE); | |
270 | vnline(sc); | |
271 | Peekkey = OPeek; | |
272 | return (1); | |
273 | } | |
274 | ||
275 | /* | |
276 | * A complete command has been defined for | |
277 | * the purposes of repeat, so copy it from | |
278 | * the working to the previous command buffer. | |
279 | */ | |
280 | setLAST() | |
281 | { | |
282 | ||
d266c416 | 283 | if (vglobp || vmacp) |
e213a660 MH |
284 | return; |
285 | lastreg = vreg; | |
286 | lasthad = Xhadcnt; | |
287 | lastcnt = Xcnt; | |
288 | *lastcp = 0; | |
289 | CP(lastcmd, workcmd); | |
290 | } | |
291 | ||
292 | /* | |
293 | * Gather up some more text from an insert. | |
294 | * If the insertion buffer oveflows, then destroy | |
295 | * the repeatability of the insert. | |
296 | */ | |
297 | addtext(cp) | |
298 | char *cp; | |
299 | { | |
300 | ||
301 | if (vglobp) | |
302 | return; | |
303 | addto(INS, cp); | |
304 | if ((INS[0] & (QUOTE|TRIM)) == OVERBUF) | |
305 | lastcmd[0] = 0; | |
306 | } | |
307 | ||
308 | setDEL() | |
309 | { | |
310 | ||
311 | setBUF(DEL); | |
312 | } | |
313 | ||
314 | /* | |
315 | * Put text from cursor upto wcursor in BUF. | |
316 | */ | |
317 | setBUF(BUF) | |
318 | register char *BUF; | |
319 | { | |
320 | register int c; | |
321 | register char *wp = wcursor; | |
322 | ||
323 | c = *wp; | |
324 | *wp = 0; | |
325 | BUF[0] = 0; | |
326 | addto(BUF, cursor); | |
327 | *wp = c; | |
328 | } | |
329 | ||
330 | addto(buf, str) | |
331 | register char *buf, *str; | |
332 | { | |
333 | ||
334 | if ((buf[0] & (QUOTE|TRIM)) == OVERBUF) | |
335 | return; | |
336 | if (strlen(buf) + strlen(str) + 1 >= VBSIZE) { | |
337 | buf[0] = OVERBUF; | |
338 | return; | |
339 | } | |
340 | ignore(strcat(buf, str)); | |
341 | } | |
342 | ||
343 | /* | |
344 | * Note a change affecting a lot of lines, or non-visible | |
345 | * lines. If the parameter must is set, then we only want | |
346 | * to do this for open modes now; return and save for later | |
347 | * notification in visual. | |
348 | */ | |
349 | noteit(must) | |
350 | bool must; | |
351 | { | |
352 | register int sdl = destline, sdc = destcol; | |
353 | ||
354 | if (notecnt < 2 || !must && state == VISUAL) | |
355 | return (0); | |
356 | splitw++; | |
357 | if (WBOT == WECHO) | |
358 | vmoveitup(1, 1); | |
359 | vigoto(WECHO, 0); | |
360 | printf("%d %sline", notecnt, notesgn); | |
361 | if (notecnt > 1) | |
362 | putchar('s'); | |
363 | if (*notenam) { | |
364 | printf(" %s", notenam); | |
365 | if (*(strend(notenam) - 1) != 'e') | |
366 | putchar('e'); | |
367 | putchar('d'); | |
368 | } | |
369 | vclreol(); | |
370 | notecnt = 0; | |
371 | if (state != VISUAL) | |
372 | vcnt = vcline = 0; | |
373 | splitw = 0; | |
374 | if (state == ONEOPEN || state == CRTOPEN) | |
375 | vup1(); | |
376 | destline = sdl; destcol = sdc; | |
377 | return (1); | |
378 | } | |
379 | ||
380 | /* | |
381 | * Rrrrringgggggg. | |
382 | * If possible, use flash (VB). | |
383 | */ | |
384 | beep() | |
385 | { | |
386 | ||
387 | if (VB) | |
388 | vputp(VB, 0); | |
389 | else | |
390 | vputc(CTRL(g)); | |
391 | } | |
392 | ||
393 | /* | |
394 | * Map the command input character c, | |
395 | * for keypads and labelled keys which do cursor | |
396 | * motions. I.e. on an adm3a we might map ^K to ^P. | |
397 | * DM1520 for example has a lot of mappable characters. | |
398 | */ | |
399 | ||
400 | map(c,maps) | |
401 | register int c; | |
402 | register struct maps *maps; | |
403 | { | |
404 | register int d; | |
405 | register char *p, *q; | |
406 | char b[10]; /* Assumption: no keypad sends string longer than 10 */ | |
407 | ||
408 | /* | |
409 | * Mapping for special keys on the terminal only. | |
410 | * BUG: if there's a long sequence and it matches | |
411 | * some chars and then misses, we lose some chars. | |
412 | * | |
413 | * For this to work, some conditions must be met. | |
414 | * 1) Keypad sends SHORT (2 or 3 char) strings | |
415 | * 2) All strings sent are same length & similar | |
416 | * 3) The user is unlikely to type the first few chars of | |
417 | * one of these strings very fast. | |
418 | * Note: some code has been fixed up since the above was laid out, | |
419 | * so conditions 1 & 2 are probably not required anymore. | |
420 | * However, this hasn't been tested with any first char | |
421 | * that means anything else except escape. | |
422 | */ | |
423 | #ifdef MDEBUG | |
424 | if (trace) | |
425 | fprintf(trace,"map(%c): ",c); | |
426 | #endif | |
d266c416 MH |
427 | /* |
428 | * If c==0, the char came from getesc typing escape. Pass it through | |
429 | * unchanged. 0 messes up the following code anyway. | |
430 | */ | |
431 | if (c==0) | |
432 | return(0); | |
433 | ||
e213a660 MH |
434 | b[0] = c; |
435 | b[1] = 0; | |
436 | for (d=0; maps[d].mapto; d++) { | |
437 | #ifdef MDEBUG | |
438 | if (trace) | |
d266c416 | 439 | fprintf(trace,"\ntry '%s', ",maps[d].cap); |
e213a660 MH |
440 | #endif |
441 | if (p = maps[d].cap) { | |
442 | for (q=b; *p; p++, q++) { | |
443 | #ifdef MDEBUG | |
444 | if (trace) | |
445 | fprintf(trace,"q->b[%d], ",q-b); | |
446 | #endif | |
447 | if (*q==0) { | |
448 | /* | |
d266c416 MH |
449 | * Is there another char waiting? |
450 | * | |
e213a660 MH |
451 | * This test is oversimplified, but |
452 | * should work mostly. It handles the | |
453 | * case where we get an ESCAPE that | |
454 | * wasn't part of a keypad string. | |
455 | */ | |
456 | if ((c=='#' ? peekkey() : fastpeekkey()) == 0) { | |
457 | #ifdef MDEBUG | |
887e3e0d | 458 | if (trace) |
299f2784 | 459 | fprintf(trace,"fpk=0: will return '%c'",c); |
e213a660 | 460 | #endif |
887e3e0d | 461 | /* |
d266c416 MH |
462 | * Nothing waiting. Push back |
463 | * what we peeked at & return | |
464 | * failure (c). | |
465 | * | |
887e3e0d MH |
466 | * We want to be able to undo |
467 | * commands, but it's nonsense | |
468 | * to undo part of an insertion | |
469 | * so if in input mode don't. | |
470 | */ | |
299f2784 MH |
471 | #ifdef MDEBUG |
472 | if (trace) | |
473 | fprintf(trace, "Call macpush, b %d %d %d\n", b[0], b[1], b[2]); | |
474 | #endif | |
887e3e0d | 475 | macpush(&b[1],maps == arrows); |
299f2784 MH |
476 | #ifdef MDEBUG |
477 | if (trace) | |
478 | fprintf(trace, "return %d\n", c); | |
479 | #endif | |
e213a660 MH |
480 | return(c); |
481 | } | |
482 | *q = getkey(); | |
483 | q[1] = 0; | |
484 | } | |
485 | if (*p != *q) | |
486 | goto contin; | |
487 | } | |
d266c416 | 488 | macpush(maps[d].mapto,maps == arrows); |
e213a660 MH |
489 | c = getkey(); |
490 | #ifdef MDEBUG | |
d266c416 MH |
491 | if (trace) |
492 | fprintf(trace,"Success: push(%s), return %c",maps[d].mapto, c); | |
e213a660 MH |
493 | #endif |
494 | return(c); /* first char of map string */ | |
495 | contin:; | |
496 | } | |
497 | } | |
498 | #ifdef MDEBUG | |
499 | if (trace) | |
d266c416 | 500 | fprintf(trace,"Fail: push(%s), return %c", &b[1], c); |
e213a660 | 501 | #endif |
44232d5b | 502 | macpush(&b[1],0); |
e213a660 MH |
503 | return(c); |
504 | } | |
505 | ||
506 | /* | |
507 | * Push st onto the front of vmacp. This is tricky because we have to | |
508 | * worry about where vmacp was previously pointing. We also have to | |
509 | * check for overflow (which is typically from a recursive macro) | |
510 | * Finally we have to set a flag so the whole thing can be undone. | |
44232d5b MH |
511 | * canundo is 1 iff we want to be able to undo the macro. This |
512 | * is false for, for example, pushing back lookahead from fastpeekkey(), | |
513 | * since otherwise two fast escapes can clobber our undo. | |
e213a660 | 514 | */ |
44232d5b | 515 | macpush(st, canundo) |
e213a660 | 516 | char *st; |
44232d5b | 517 | int canundo; |
e213a660 MH |
518 | { |
519 | char tmpbuf[BUFSIZ]; | |
520 | ||
521 | if (st==0 || *st==0) | |
522 | return; | |
299f2784 | 523 | #ifdef MDEBUG |
e213a660 | 524 | if (trace) |
d266c416 | 525 | fprintf(trace, "macpush(%s), canundo=%d\n",st,canundo); |
e213a660 | 526 | #endif |
887e3e0d | 527 | if ((vmacp ? strlen(vmacp) : 0) + strlen(st) > BUFSIZ) |
e213a660 | 528 | error("Macro too long@ - maybe recursive?"); |
44232d5b | 529 | if (vmacp) { |
e213a660 | 530 | strcpy(tmpbuf, vmacp); |
887e3e0d MH |
531 | if (!FIXUNDO) |
532 | canundo = 0; /* can't undo inside a macro anyway */ | |
44232d5b | 533 | } |
e213a660 MH |
534 | strcpy(vmacbuf, st); |
535 | if (vmacp) | |
536 | strcat(vmacbuf, tmpbuf); | |
537 | vmacp = vmacbuf; | |
538 | /* arrange to be able to undo the whole macro */ | |
44232d5b | 539 | if (canundo) { |
d266c416 | 540 | #ifdef notdef |
44232d5b MH |
541 | otchng = tchng; |
542 | vsave(); | |
543 | saveall(); | |
887e3e0d | 544 | inopen = -1; /* no need to save since it had to be 1 or -1 before */ |
44232d5b | 545 | vundkind = VMANY; |
d266c416 MH |
546 | #endif |
547 | vch_mac = VC_NOCHANGE; | |
44232d5b | 548 | } |
887e3e0d MH |
549 | } |
550 | ||
e213a660 | 551 | #ifdef TRACE |
d266c416 MH |
552 | visdump(s) |
553 | char *s; | |
554 | { | |
555 | register int i; | |
556 | ||
557 | if (!trace) return; | |
558 | ||
559 | fprintf(trace, "\n%s: basWTOP=%d, basWLINES=%d, WTOP=%d, WBOT=%d, WLINES=%d, WCOLS=%d, WECHO=%d\n", | |
560 | s, basWTOP, basWLINES, WTOP, WBOT, WLINES, WCOLS, WECHO); | |
561 | fprintf(trace, " vcnt=%d, vcline=%d, cursor=%d, wcursor=%d, wdot=%d\n", | |
562 | vcnt, vcline, cursor-linebuf, wcursor-linebuf, wdot-zero); | |
563 | for (i=0; i<TUBELINES; i++) | |
564 | if (vtube[i] && *vtube[i]) | |
565 | fprintf(trace, "%d: '%s'\n", i, vtube[i]); | |
566 | tvliny(); | |
567 | } | |
568 | ||
887e3e0d MH |
569 | vudump(s) |
570 | char *s; | |
571 | { | |
d266c416 | 572 | register line *p; |
f0f2d980 | 573 | char savelb[1024]; |
d266c416 MH |
574 | |
575 | if (!trace) return; | |
576 | ||
577 | fprintf(trace, "\n%s: undkind=%d, vundkind=%d, unddel=%d, undap1=%d, undap2=%d,\n", | |
578 | s, undkind, vundkind, lineno(unddel), lineno(undap1), lineno(undap2)); | |
579 | fprintf(trace, " undadot=%d, dot=%d, dol=%d, unddol=%d, truedol=%d\n", | |
580 | lineno(undadot), lineno(dot), lineno(dol), lineno(unddol), lineno(truedol)); | |
f0f2d980 MH |
581 | fprintf(trace, " [\n"); |
582 | CP(savelb, linebuf); | |
583 | fprintf(trace, "linebuf = '%s'\n", linebuf); | |
584 | for (p=zero+1; p<=truedol; p++) { | |
d266c416 | 585 | fprintf(trace, "%o ", *p); |
f0f2d980 MH |
586 | getline(*p); |
587 | fprintf(trace, "'%s'\n", linebuf); | |
588 | } | |
d266c416 | 589 | fprintf(trace, "]\n"); |
f0f2d980 | 590 | CP(linebuf, savelb); |
e213a660 | 591 | } |
887e3e0d | 592 | #endif |
e213a660 MH |
593 | |
594 | /* | |
595 | * Get a count from the keyed input stream. | |
596 | * A zero count is indistinguishable from no count. | |
597 | */ | |
598 | vgetcnt() | |
599 | { | |
600 | register int c, cnt; | |
601 | ||
602 | cnt = 0; | |
603 | for (;;) { | |
604 | c = getkey(); | |
605 | if (!isdigit(c)) | |
606 | break; | |
607 | cnt *= 10, cnt += c - '0'; | |
608 | } | |
609 | ungetkey(c); | |
610 | Xhadcnt = 1; | |
611 | Xcnt = cnt; | |
612 | return(cnt); | |
613 | } | |
614 | ||
615 | /* | |
616 | * fastpeekkey is just like peekkey but insists the character come in | |
617 | * fast (within 1 second). This will succeed if it is the 2nd char of | |
618 | * a machine generated sequence (such as a function pad from an escape | |
619 | * flavor terminal) but fail for a human hitting escape then waiting. | |
620 | */ | |
621 | fastpeekkey() | |
622 | { | |
623 | int trapalarm(); | |
624 | register int c; | |
625 | ||
887e3e0d MH |
626 | /* |
627 | * If the user has set notimeout, we wait forever for a key. | |
628 | * If we are in a macro we do too, but since it's already | |
629 | * buffered internally it will return immediately. | |
630 | * In other cases we force this to die in 1 second. | |
631 | * This is pretty reliable (VMUNIX rounds it to .5 - 1.5 secs, | |
632 | * but UNIX truncates it to 0 - 1 secs) but due to system delays | |
633 | * there are times when arrow keys or very fast typing get counted | |
634 | * as separate. notimeout is provided for people who dislike such | |
635 | * nondeterminism. | |
636 | */ | |
299f2784 MH |
637 | #ifdef MDEBUG |
638 | if (trace) | |
639 | fprintf(trace,"\nfastpeekkey: ",c); | |
640 | #endif | |
887e3e0d MH |
641 | if (value(TIMEOUT) && inopen >= 0) { |
642 | signal(SIGALRM, trapalarm); | |
299f2784 MH |
643 | #ifdef MDEBUG |
644 | alarm(10); | |
645 | if (trace) | |
646 | fprintf(trace, "set alarm "); | |
647 | #else | |
887e3e0d | 648 | alarm(1); |
299f2784 | 649 | #endif |
887e3e0d | 650 | } |
e213a660 MH |
651 | CATCH |
652 | c = peekkey(); | |
653 | #ifdef MDEBUG | |
654 | if (trace) | |
655 | fprintf(trace,"[OK]",c); | |
656 | #endif | |
657 | alarm(0); | |
658 | ONERR | |
659 | c = 0; | |
660 | #ifdef MDEBUG | |
661 | if (trace) | |
299f2784 | 662 | fprintf(trace,"[TIMEOUT]",c); |
e213a660 MH |
663 | #endif |
664 | ENDCATCH | |
665 | #ifdef MDEBUG | |
666 | if (trace) | |
667 | fprintf(trace,"[fpk:%o]",c); | |
668 | #endif | |
669 | return(c); | |
670 | } | |
671 | ||
672 | trapalarm() { | |
673 | alarm(0); | |
674 | longjmp(vreslab,1); | |
675 | } |