Commit | Line | Data |
---|---|---|
299f2784 | 1 | /* Copyright (c) 1981 Regents of the University of California */ |
cb3ac212 | 2 | static char *sccsid = "@(#)ex_vops2.c 6.5 %G%"; |
09035cec MH |
3 | #include "ex.h" |
4 | #include "ex_tty.h" | |
5 | #include "ex_vis.h" | |
6 | ||
7 | /* | |
8 | * Low level routines for operations sequences, | |
9 | * and mostly, insert mode (and a subroutine | |
10 | * to read an input line, including in the echo area.) | |
11 | */ | |
299f2784 MH |
12 | extern char *vUA1, *vUA2; /* mjm: extern; also in ex_vops.c */ |
13 | extern char *vUD1, *vUD2; /* mjm: extern; also in ex_vops.c */ | |
09035cec MH |
14 | |
15 | /* | |
16 | * Obleeperate characters in hardcopy | |
17 | * open with \'s. | |
18 | */ | |
19 | bleep(i, cp) | |
20 | register int i; | |
21 | char *cp; | |
22 | { | |
23 | ||
24 | i -= column(cp); | |
25 | do | |
26 | putchar('\\' | QUOTE); | |
27 | while (--i >= 0); | |
28 | rubble = 1; | |
29 | } | |
30 | ||
31 | /* | |
32 | * Common code for middle part of delete | |
33 | * and change operating on parts of lines. | |
34 | */ | |
35 | vdcMID() | |
36 | { | |
37 | register char *cp; | |
38 | ||
39 | squish(); | |
40 | setLAST(); | |
887e3e0d MH |
41 | if (FIXUNDO) |
42 | vundkind = VCHNG, CP(vutmp, linebuf); | |
09035cec MH |
43 | if (wcursor < cursor) |
44 | cp = wcursor, wcursor = cursor, cursor = cp; | |
45 | vUD1 = vUA1 = vUA2 = cursor; vUD2 = wcursor; | |
46 | return (column(wcursor - 1)); | |
47 | } | |
48 | ||
49 | /* | |
50 | * Take text from linebuf and stick it | |
51 | * in the VBSIZE buffer BUF. Used to save | |
52 | * deleted text of part of line. | |
53 | */ | |
54 | takeout(BUF) | |
55 | char *BUF; | |
56 | { | |
57 | register char *cp; | |
58 | ||
59 | if (wcursor < linebuf) | |
60 | wcursor = linebuf; | |
61 | if (cursor == wcursor) { | |
62 | beep(); | |
63 | return; | |
64 | } | |
65 | if (wcursor < cursor) { | |
66 | cp = wcursor; | |
67 | wcursor = cursor; | |
68 | cursor = cp; | |
69 | } | |
70 | setBUF(BUF); | |
71 | if ((BUF[0] & (QUOTE|TRIM)) == OVERBUF) | |
72 | beep(); | |
73 | } | |
74 | ||
75 | /* | |
76 | * Are we at the end of the printed representation of the | |
77 | * line? Used internally in hardcopy open. | |
78 | */ | |
79 | ateopr() | |
80 | { | |
81 | register int i, c; | |
82 | register char *cp = vtube[destline] + destcol; | |
83 | ||
84 | for (i = WCOLS - destcol; i > 0; i--) { | |
85 | c = *cp++; | |
86 | if (c == 0) | |
87 | return (1); | |
88 | if (c != ' ' && (c & QUOTE) == 0) | |
89 | return (0); | |
90 | } | |
91 | return (1); | |
92 | } | |
93 | ||
94 | /* | |
95 | * Append. | |
96 | * | |
97 | * This routine handles the top level append, doing work | |
98 | * as each new line comes in, and arranging repeatability. | |
99 | * It also handles append with repeat counts, and calculation | |
100 | * of autoindents for new lines. | |
101 | */ | |
102 | bool vaifirst; | |
103 | bool gobbled; | |
104 | char *ogcursor; | |
105 | ||
106 | vappend(ch, cnt, indent) | |
299f2784 | 107 | int ch; /* mjm: char --> int */ |
09035cec MH |
108 | int cnt, indent; |
109 | { | |
110 | register int i; | |
111 | register char *gcursor; | |
112 | bool escape; | |
04379bab | 113 | int repcnt, savedoomed; |
09035cec MH |
114 | short oldhold = hold; |
115 | ||
116 | /* | |
117 | * Before a move in hardopen when the line is dirty | |
118 | * or we are in the middle of the printed representation, | |
119 | * we retype the line to the left of the cursor so the | |
120 | * insert looks clean. | |
121 | */ | |
122 | if (ch != 'o' && state == HARDOPEN && (rubble || !ateopr())) { | |
123 | rubble = 1; | |
124 | gcursor = cursor; | |
125 | i = *gcursor; | |
126 | *gcursor = ' '; | |
127 | wcursor = gcursor; | |
128 | vmove(); | |
129 | *gcursor = i; | |
130 | } | |
131 | vaifirst = indent == 0; | |
132 | ||
133 | /* | |
134 | * Handle replace character by (eventually) | |
135 | * limiting the number of input characters allowed | |
136 | * in the vgetline routine. | |
137 | */ | |
138 | if (ch == 'r') | |
139 | repcnt = 2; | |
140 | else | |
141 | repcnt = 0; | |
142 | ||
143 | /* | |
144 | * If an autoindent is specified, then | |
145 | * generate a mixture of blanks to tabs to implement | |
146 | * it and place the cursor after the indent. | |
147 | * Text read by the vgetline routine will be placed in genbuf, | |
148 | * so the indent is generated there. | |
149 | */ | |
150 | if (value(AUTOINDENT) && indent != 0) { | |
151 | gcursor = genindent(indent); | |
152 | *gcursor = 0; | |
153 | vgotoCL(qcolumn(cursor - 1, genbuf)); | |
154 | } else { | |
155 | gcursor = genbuf; | |
156 | *gcursor = 0; | |
157 | if (ch == 'o') | |
158 | vfixcurs(); | |
159 | } | |
160 | ||
161 | /* | |
162 | * Prepare for undo. Pointers delimit inserted portion of line. | |
163 | */ | |
164 | vUA1 = vUA2 = cursor; | |
165 | ||
166 | /* | |
167 | * If we are not in a repeated command and a ^@ comes in | |
168 | * then this means the previous inserted text. | |
169 | * If there is none or it was too long to be saved, | |
170 | * then beep() and also arrange to undo any damage done | |
171 | * so far (e.g. if we are a change.) | |
172 | */ | |
173 | if ((vglobp && *vglobp == 0) || peekbr()) { | |
174 | if ((INS[0] & (QUOTE|TRIM)) == OVERBUF) { | |
175 | beep(); | |
176 | if (!splitw) | |
177 | ungetkey('u'); | |
178 | doomed = 0; | |
179 | hold = oldhold; | |
180 | return; | |
181 | } | |
182 | /* | |
183 | * Unread input from INS. | |
184 | * An escape will be generated at end of string. | |
185 | * Hold off n^^2 type update on dumb terminals. | |
186 | */ | |
187 | vglobp = INS; | |
188 | hold |= HOLDQIK; | |
189 | } else if (vglobp == 0) | |
190 | /* | |
191 | * Not a repeated command, get | |
192 | * a new inserted text for repeat. | |
193 | */ | |
194 | INS[0] = 0; | |
195 | ||
196 | /* | |
197 | * For wrapmargin to hack away second space after a '.' | |
198 | * when the first space caused a line break we keep | |
199 | * track that this happened in gobblebl, which says | |
200 | * to gobble up a blank silently. | |
201 | */ | |
202 | gobblebl = 0; | |
203 | ||
204 | /* | |
205 | * Text gathering loop. | |
206 | * New text goes into genbuf starting at gcursor. | |
207 | * cursor preserves place in linebuf where text will eventually go. | |
208 | */ | |
209 | if (*cursor == 0 || state == CRTOPEN) | |
210 | hold |= HOLDROL; | |
211 | for (;;) { | |
212 | if (ch == 'r' && repcnt == 0) | |
213 | escape = 0; | |
214 | else { | |
04379bab | 215 | gcursor = vgetline(repcnt, gcursor, &escape, ch); |
09035cec MH |
216 | |
217 | /* | |
218 | * After an append, stick information | |
219 | * about the ^D's and ^^D's and 0^D's in | |
220 | * the repeated text buffer so repeated | |
221 | * inserts of stuff indented with ^D as backtab's | |
222 | * can work. | |
223 | */ | |
224 | if (HADUP) | |
225 | addtext("^"); | |
226 | else if (HADZERO) | |
227 | addtext("0"); | |
228 | while (CDCNT > 0) | |
229 | addtext("\204"), CDCNT--; | |
230 | if (gobbled) | |
231 | addtext(" "); | |
232 | addtext(ogcursor); | |
233 | } | |
234 | repcnt = 0; | |
235 | ||
236 | /* | |
237 | * Smash the generated and preexisting indents together | |
238 | * and generate one cleanly made out of tabs and spaces | |
239 | * if we are using autoindent. | |
240 | */ | |
241 | if (!vaifirst && value(AUTOINDENT)) { | |
242 | i = fixindent(indent); | |
243 | if (!HADUP) | |
244 | indent = i; | |
245 | gcursor = strend(genbuf); | |
246 | } | |
247 | ||
248 | /* | |
249 | * Limit the repetition count based on maximum | |
250 | * possible line length; do output implied | |
251 | * by further count (> 1) and cons up the new line | |
252 | * in linebuf. | |
253 | */ | |
254 | cnt = vmaxrep(ch, cnt); | |
255 | CP(gcursor + 1, cursor); | |
256 | do { | |
257 | CP(cursor, genbuf); | |
258 | if (cnt > 1) { | |
259 | int oldhold = hold; | |
260 | ||
261 | Outchar = vinschar; | |
262 | hold |= HOLDQIK; | |
263 | printf("%s", genbuf); | |
264 | hold = oldhold; | |
265 | Outchar = vputchar; | |
266 | } | |
267 | cursor += gcursor - genbuf; | |
268 | } while (--cnt > 0); | |
269 | endim(); | |
270 | vUA2 = cursor; | |
271 | if (escape != '\n') | |
272 | CP(cursor, gcursor + 1); | |
273 | ||
274 | /* | |
275 | * If doomed characters remain, clobber them, | |
276 | * and reopen the line to get the display exact. | |
277 | */ | |
278 | if (state != HARDOPEN) { | |
279 | DEPTH(vcline) = 0; | |
04379bab | 280 | savedoomed = doomed; |
09035cec MH |
281 | if (doomed > 0) { |
282 | register int cind = cindent(); | |
283 | ||
284 | physdc(cind, cind + doomed); | |
285 | doomed = 0; | |
286 | } | |
287 | i = vreopen(LINE(vcline), lineDOT(), vcline); | |
f0f2d980 MH |
288 | #ifdef TRACE |
289 | if (trace) | |
290 | fprintf(trace, "restoring doomed from %d to %d\n", doomed, savedoomed); | |
291 | #endif | |
292 | if (ch == 'R') | |
293 | doomed = savedoomed; | |
09035cec MH |
294 | } |
295 | ||
296 | /* | |
297 | * All done unless we are continuing on to another line. | |
298 | */ | |
299 | if (escape != '\n') | |
300 | break; | |
301 | ||
302 | /* | |
303 | * Set up for the new line. | |
304 | * First save the current line, then construct a new | |
305 | * first image for the continuation line consisting | |
306 | * of any new autoindent plus the pushed ahead text. | |
307 | */ | |
308 | killU(); | |
309 | addtext(gobblebl ? " " : "\n"); | |
310 | vsave(); | |
311 | cnt = 1; | |
312 | if (value(AUTOINDENT)) { | |
313 | #ifdef LISPCODE | |
314 | if (value(LISP)) | |
315 | indent = lindent(dot + 1); | |
316 | else | |
317 | #endif | |
318 | if (!HADUP && vaifirst) | |
319 | indent = whitecnt(linebuf); | |
320 | vaifirst = 0; | |
321 | strcLIN(vpastwh(gcursor + 1)); | |
322 | gcursor = genindent(indent); | |
323 | *gcursor = 0; | |
324 | if (gcursor + strlen(linebuf) > &genbuf[LBSIZE - 2]) | |
325 | gcursor = genbuf; | |
326 | CP(gcursor, linebuf); | |
327 | } else { | |
328 | CP(genbuf, gcursor + 1); | |
329 | gcursor = genbuf; | |
330 | } | |
331 | ||
332 | /* | |
333 | * If we started out as a single line operation and are now | |
334 | * turning into a multi-line change, then we had better yank | |
335 | * out dot before it changes so that undo will work | |
336 | * correctly later. | |
337 | */ | |
887e3e0d | 338 | if (FIXUNDO && vundkind == VCHNG) { |
09035cec MH |
339 | vremote(1, yank, 0); |
340 | undap1--; | |
341 | } | |
342 | ||
343 | /* | |
344 | * Now do the append of the new line in the buffer, | |
345 | * and update the display. If slowopen | |
346 | * we don't do very much. | |
347 | */ | |
348 | vdoappend(genbuf); | |
349 | vundkind = VMANYINS; | |
350 | vcline++; | |
351 | if (state != VISUAL) | |
352 | vshow(dot, NOLINE); | |
353 | else { | |
354 | i += LINE(vcline - 1); | |
355 | vopen(dot, i); | |
356 | if (value(SLOWOPEN)) | |
357 | vscrap(); | |
358 | else | |
359 | vsync1(LINE(vcline)); | |
360 | } | |
361 | strcLIN(gcursor); | |
362 | *gcursor = 0; | |
363 | cursor = linebuf; | |
364 | vgotoCL(qcolumn(cursor - 1, genbuf)); | |
365 | } | |
366 | ||
367 | /* | |
368 | * All done with insertion, position the cursor | |
369 | * and sync the screen. | |
370 | */ | |
371 | hold = oldhold; | |
372 | if (cursor > linebuf) | |
373 | cursor--; | |
374 | if (state != HARDOPEN) | |
375 | vsyncCL(); | |
376 | else if (cursor > linebuf) | |
377 | back1(); | |
378 | doomed = 0; | |
379 | wcursor = cursor; | |
380 | vmove(); | |
381 | } | |
382 | ||
383 | /* | |
384 | * Subroutine for vgetline to back up a single character position, | |
385 | * backwards around end of lines (vgoto can't hack columns which are | |
386 | * less than 0 in general). | |
387 | */ | |
388 | back1() | |
389 | { | |
390 | ||
391 | vgoto(destline - 1, WCOLS + destcol - 1); | |
392 | } | |
393 | ||
394 | /* | |
395 | * Get a line into genbuf after gcursor. | |
396 | * Cnt limits the number of input characters | |
397 | * accepted and is used for handling the replace | |
398 | * single character command. Aescaped is the location | |
399 | * where we stick a termination indicator (whether we | |
400 | * ended with an ESCAPE or a newline/return. | |
401 | * | |
402 | * We do erase-kill type processing here and also | |
403 | * are careful about the way we do this so that it is | |
404 | * repeatable. (I.e. so that your kill doesn't happen, | |
405 | * when you repeat an insert if it was escaped with \ the | |
04379bab MH |
406 | * first time you did it. commch is the command character |
407 | * involved, including the prompt for readline. | |
09035cec MH |
408 | */ |
409 | char * | |
04379bab | 410 | vgetline(cnt, gcursor, aescaped, commch) |
09035cec MH |
411 | int cnt; |
412 | register char *gcursor; | |
413 | bool *aescaped; | |
04379bab | 414 | char commch; |
09035cec MH |
415 | { |
416 | register int c, ch; | |
417 | register char *cp; | |
04379bab | 418 | int x, y, iwhite, backsl=0; |
09035cec | 419 | char *iglobp; |
d266c416 | 420 | char cstr[2]; |
09035cec MH |
421 | int (*OO)() = Outchar; |
422 | ||
423 | /* | |
424 | * Clear the output state and counters | |
425 | * for autoindent backwards motion (counts of ^D, etc.) | |
426 | * Remember how much white space at beginning of line so | |
427 | * as not to allow backspace over autoindent. | |
428 | */ | |
429 | *aescaped = 0; | |
430 | ogcursor = gcursor; | |
431 | flusho(); | |
432 | CDCNT = 0; | |
433 | HADUP = 0; | |
434 | HADZERO = 0; | |
435 | gobbled = 0; | |
436 | iwhite = whitecnt(genbuf); | |
437 | iglobp = vglobp; | |
438 | ||
439 | /* | |
440 | * Carefully avoid using vinschar in the echo area. | |
441 | */ | |
442 | if (splitw) | |
443 | Outchar = vputchar; | |
444 | else { | |
445 | Outchar = vinschar; | |
446 | vprepins(); | |
447 | } | |
448 | for (;;) { | |
04379bab | 449 | backsl = 0; |
09035cec MH |
450 | if (gobblebl) |
451 | gobblebl--; | |
452 | if (cnt != 0) { | |
453 | cnt--; | |
454 | if (cnt == 0) | |
455 | goto vadone; | |
456 | } | |
d266c416 MH |
457 | c = getkey(); |
458 | if (c != ATTN) | |
459 | c &= (QUOTE|TRIM); | |
460 | ch = c; | |
461 | maphopcnt = 0; | |
04379bab | 462 | if (vglobp == 0 && Peekkey == 0 && commch != 'r') |
887e3e0d | 463 | while ((ch = map(c, immacs)) != c) { |
09035cec | 464 | c = ch; |
887e3e0d MH |
465 | if (!value(REMAP)) |
466 | break; | |
d266c416 MH |
467 | if (++maphopcnt > 256) |
468 | error("Infinite macro loop"); | |
887e3e0d | 469 | } |
09035cec MH |
470 | if (!iglobp) { |
471 | ||
472 | /* | |
473 | * Erase-kill type processing. | |
474 | * Only happens if we were not reading | |
475 | * from untyped input when we started. | |
476 | * Map users erase to ^H, kill to -1 for switch. | |
477 | */ | |
d266c416 | 478 | #ifndef USG3TTY |
09035cec MH |
479 | if (c == tty.sg_erase) |
480 | c = CTRL(h); | |
481 | else if (c == tty.sg_kill) | |
482 | c = -1; | |
d266c416 MH |
483 | #else |
484 | if (c == tty.c_cc[VERASE]) | |
485 | c = CTRL(h); | |
486 | else if (c == tty.c_cc[VKILL]) | |
487 | c = -1; | |
488 | #endif | |
09035cec MH |
489 | switch (c) { |
490 | ||
491 | /* | |
492 | * ^? Interrupt drops you back to visual | |
493 | * command mode with an unread interrupt | |
494 | * still in the input buffer. | |
495 | * | |
496 | * ^\ Quit does the same as interrupt. | |
497 | * If you are a ex command rather than | |
498 | * a vi command this will drop you | |
499 | * back to command mode for sure. | |
500 | */ | |
501 | case ATTN: | |
502 | case QUIT: | |
503 | ungetkey(c); | |
504 | goto vadone; | |
505 | ||
506 | /* | |
507 | * ^H Backs up a character in the input. | |
508 | * | |
509 | * BUG: Can't back around line boundaries. | |
510 | * This is hard because stuff has | |
511 | * already been saved for repeat. | |
512 | */ | |
513 | case CTRL(h): | |
514 | bakchar: | |
515 | cp = gcursor - 1; | |
516 | if (cp < ogcursor) { | |
517 | if (splitw) { | |
518 | /* | |
519 | * Backspacing over readecho | |
520 | * prompt. Pretend delete but | |
521 | * don't beep. | |
522 | */ | |
523 | ungetkey(c); | |
524 | goto vadone; | |
525 | } | |
526 | beep(); | |
527 | continue; | |
528 | } | |
529 | goto vbackup; | |
530 | ||
531 | /* | |
532 | * ^W Back up a white/non-white word. | |
533 | */ | |
534 | case CTRL(w): | |
535 | wdkind = 1; | |
536 | for (cp = gcursor; cp > ogcursor && isspace(cp[-1]); cp--) | |
537 | continue; | |
538 | for (c = wordch(cp - 1); | |
539 | cp > ogcursor && wordof(c, cp - 1); cp--) | |
540 | continue; | |
541 | goto vbackup; | |
542 | ||
543 | /* | |
544 | * users kill Kill input on this line, back to | |
545 | * the autoindent. | |
546 | */ | |
547 | case -1: | |
548 | cp = ogcursor; | |
549 | vbackup: | |
550 | if (cp == gcursor) { | |
551 | beep(); | |
552 | continue; | |
553 | } | |
554 | endim(); | |
555 | *cp = 0; | |
556 | c = cindent(); | |
557 | vgotoCL(qcolumn(cursor - 1, genbuf)); | |
558 | if (doomed >= 0) | |
559 | doomed += c - cindent(); | |
560 | gcursor = cp; | |
561 | continue; | |
562 | ||
563 | /* | |
564 | * \ Followed by erase or kill | |
565 | * maps to just the erase or kill. | |
566 | */ | |
567 | case '\\': | |
568 | x = destcol, y = destline; | |
569 | putchar('\\'); | |
570 | vcsync(); | |
571 | c = getkey(); | |
d266c416 | 572 | #ifndef USG3TTY |
04379bab | 573 | if (c == tty.sg_erase || c == tty.sg_kill) |
d266c416 MH |
574 | #else |
575 | if (c == tty.c_cc[VERASE] | |
04379bab | 576 | || c == tty.c_cc[VKILL]) |
d266c416 | 577 | #endif |
04379bab | 578 | { |
09035cec MH |
579 | vgoto(y, x); |
580 | if (doomed >= 0) | |
581 | doomed++; | |
582 | goto def; | |
583 | } | |
584 | ungetkey(c), c = '\\'; | |
04379bab MH |
585 | backsl = 1; |
586 | break; | |
09035cec MH |
587 | |
588 | /* | |
589 | * ^Q Super quote following character | |
590 | * Only ^@ is verboten (trapped at | |
591 | * a lower level) and \n forces a line | |
592 | * split so doesn't really go in. | |
593 | * | |
594 | * ^V Synonym for ^Q | |
595 | */ | |
596 | case CTRL(q): | |
597 | case CTRL(v): | |
598 | x = destcol, y = destline; | |
599 | putchar('^'); | |
600 | vgoto(y, x); | |
601 | c = getkey(); | |
602 | #ifdef TIOCSETC | |
603 | if (c == ATTN) | |
604 | c = nttyc.t_intrc; | |
605 | #endif | |
606 | if (c != NL) { | |
607 | if (doomed >= 0) | |
608 | doomed++; | |
609 | goto def; | |
610 | } | |
611 | break; | |
612 | } | |
613 | } | |
614 | ||
615 | /* | |
616 | * If we get a blank not in the echo area | |
617 | * consider splitting the window in the wrapmargin. | |
618 | */ | |
d266c416 MH |
619 | if (c != NL && !splitw) { |
620 | if (c == ' ' && gobblebl) { | |
09035cec MH |
621 | gobbled = 1; |
622 | continue; | |
623 | } | |
04379bab MH |
624 | if (value(WRAPMARGIN) && |
625 | (outcol >= OCOLUMNS - value(WRAPMARGIN) || | |
626 | backsl && outcol==0) && | |
627 | commch != 'r') { | |
d266c416 MH |
628 | /* |
629 | * At end of word and hit wrapmargin. | |
630 | * Move the word to next line and keep going. | |
631 | */ | |
632 | wdkind = 1; | |
633 | *gcursor++ = c; | |
04379bab MH |
634 | if (backsl) |
635 | *gcursor++ = getkey(); | |
d266c416 MH |
636 | *gcursor = 0; |
637 | /* | |
638 | * Find end of previous word if we are past it. | |
639 | */ | |
640 | for (cp=gcursor; cp>ogcursor && isspace(cp[-1]); cp--) | |
641 | ; | |
04379bab | 642 | if (outcol+(backsl?OCOLUMNS:0) - (gcursor-cp) >= OCOLUMNS - value(WRAPMARGIN)) { |
d266c416 MH |
643 | /* |
644 | * Find beginning of previous word. | |
645 | */ | |
646 | for (; cp>ogcursor && !isspace(cp[-1]); cp--) | |
647 | ; | |
648 | if (cp <= ogcursor) { | |
649 | /* | |
650 | * There is a single word that | |
651 | * is too long to fit. Just | |
652 | * let it pass, but beep for | |
653 | * each new letter to warn | |
654 | * the luser. | |
655 | */ | |
656 | c = *--gcursor; | |
657 | *gcursor = 0; | |
658 | beep(); | |
659 | goto dontbreak; | |
660 | } | |
661 | /* | |
662 | * Save it for next line. | |
663 | */ | |
664 | macpush(cp, 0); | |
665 | cp--; | |
666 | } | |
667 | macpush("\n", 0); | |
668 | /* | |
669 | * Erase white space before the word. | |
670 | */ | |
671 | while (cp > ogcursor && isspace(cp[-1])) | |
672 | cp--; /* skip blank */ | |
673 | gobblebl = 3; | |
674 | goto vbackup; | |
09035cec | 675 | } |
d266c416 MH |
676 | dontbreak:; |
677 | } | |
678 | ||
679 | /* | |
680 | * Word abbreviation mode. | |
681 | */ | |
682 | cstr[0] = c; | |
683 | if (anyabbrs && gcursor > ogcursor && !wordch(cstr) && wordch(gcursor-1)) { | |
684 | int wdtype, abno; | |
685 | ||
686 | cstr[1] = 0; | |
687 | wdkind = 1; | |
688 | cp = gcursor - 1; | |
689 | for (wdtype = wordch(cp - 1); | |
690 | cp > ogcursor && wordof(wdtype, cp - 1); cp--) | |
691 | ; | |
692 | *gcursor = 0; | |
693 | for (abno=0; abbrevs[abno].mapto; abno++) { | |
694 | if (eq(cp, abbrevs[abno].cap)) { | |
695 | macpush(cstr, 0); | |
696 | macpush(abbrevs[abno].mapto); | |
697 | goto vbackup; | |
698 | } | |
699 | } | |
09035cec | 700 | } |
d266c416 | 701 | |
09035cec MH |
702 | switch (c) { |
703 | ||
704 | /* | |
705 | * ^M Except in repeat maps to \n. | |
706 | */ | |
707 | case CR: | |
708 | if (vglobp) | |
709 | goto def; | |
710 | c = '\n'; | |
711 | /* presto chango ... */ | |
712 | ||
713 | /* | |
714 | * \n Start new line. | |
715 | */ | |
716 | case NL: | |
717 | *aescaped = c; | |
718 | goto vadone; | |
719 | ||
720 | /* | |
721 | * escape End insert unless repeat and more to repeat. | |
722 | */ | |
723 | case ESCAPE: | |
724 | if (lastvgk) | |
725 | goto def; | |
726 | goto vadone; | |
727 | ||
728 | /* | |
729 | * ^D Backtab. | |
730 | * ^T Software forward tab. | |
731 | * | |
732 | * Unless in repeat where this means these | |
733 | * were superquoted in. | |
734 | */ | |
735 | case CTRL(d): | |
736 | case CTRL(t): | |
737 | if (vglobp) | |
738 | goto def; | |
739 | /* fall into ... */ | |
740 | ||
741 | /* | |
742 | * ^D|QUOTE Is a backtab (in a repeated command). | |
743 | */ | |
744 | case CTRL(d) | QUOTE: | |
745 | *gcursor = 0; | |
746 | cp = vpastwh(genbuf); | |
747 | c = whitecnt(genbuf); | |
748 | if (ch == CTRL(t)) { | |
749 | /* | |
750 | * ^t just generates new indent replacing | |
751 | * current white space rounded up to soft | |
752 | * tab stop increment. | |
753 | */ | |
754 | if (cp != gcursor) | |
755 | /* | |
756 | * BUG: Don't hack ^T except | |
757 | * right after initial | |
758 | * white space. | |
759 | */ | |
760 | continue; | |
761 | cp = genindent(iwhite = backtab(c + value(SHIFTWIDTH) + 1)); | |
762 | ogcursor = cp; | |
763 | goto vbackup; | |
764 | } | |
765 | /* | |
766 | * ^D works only if we are at the (end of) the | |
767 | * generated autoindent. We count the ^D for repeat | |
768 | * purposes. | |
769 | */ | |
770 | if (c == iwhite && c != 0) | |
771 | if (cp == gcursor) { | |
772 | iwhite = backtab(c); | |
773 | CDCNT++; | |
774 | ogcursor = cp = genindent(iwhite); | |
775 | goto vbackup; | |
776 | } else if (&cp[1] == gcursor && | |
777 | (*cp == '^' || *cp == '0')) { | |
778 | /* | |
779 | * ^^D moves to margin, then back | |
780 | * to current indent on next line. | |
781 | * | |
782 | * 0^D moves to margin and then | |
783 | * stays there. | |
784 | */ | |
785 | HADZERO = *cp == '0'; | |
786 | ogcursor = cp = genbuf; | |
787 | HADUP = 1 - HADZERO; | |
788 | CDCNT = 1; | |
789 | endim(); | |
790 | back1(); | |
887e3e0d | 791 | vputchar(' '); |
09035cec MH |
792 | goto vbackup; |
793 | } | |
794 | if (vglobp && vglobp - iglobp >= 2 && | |
795 | (vglobp[-2] == '^' || vglobp[-2] == '0') | |
796 | && gcursor == ogcursor + 1) | |
797 | goto bakchar; | |
798 | continue; | |
799 | ||
800 | default: | |
801 | /* | |
802 | * Possibly discard control inputs. | |
803 | */ | |
804 | if (!vglobp && junk(c)) { | |
805 | beep(); | |
806 | continue; | |
807 | } | |
808 | def: | |
04379bab | 809 | if (!backsl) { |
299f2784 | 810 | int cnt; |
04379bab | 811 | putchar(c); |
0ab2d2a9 | 812 | flush(); |
04379bab | 813 | } |
09035cec MH |
814 | if (gcursor > &genbuf[LBSIZE - 2]) |
815 | error("Line too long"); | |
816 | *gcursor++ = c & TRIM; | |
817 | vcsync(); | |
09035cec MH |
818 | if (value(SHOWMATCH) && !iglobp) |
819 | if (c == ')' || c == '}') | |
820 | lsmatch(gcursor); | |
09035cec MH |
821 | continue; |
822 | } | |
823 | } | |
824 | vadone: | |
825 | *gcursor = 0; | |
d266c416 MH |
826 | if (Outchar != termchar) |
827 | Outchar = OO; | |
09035cec MH |
828 | endim(); |
829 | return (gcursor); | |
830 | } | |
831 | ||
832 | int vgetsplit(); | |
833 | char *vsplitpt; | |
834 | ||
835 | /* | |
836 | * Append the line in buffer at lp | |
837 | * to the buffer after dot. | |
838 | */ | |
839 | vdoappend(lp) | |
840 | char *lp; | |
841 | { | |
842 | register int oing = inglobal; | |
843 | ||
844 | vsplitpt = lp; | |
845 | inglobal = 1; | |
846 | ignore(append(vgetsplit, dot)); | |
847 | inglobal = oing; | |
848 | } | |
849 | ||
850 | /* | |
851 | * Subroutine for vdoappend to pass to append. | |
852 | */ | |
853 | vgetsplit() | |
854 | { | |
855 | ||
856 | if (vsplitpt == 0) | |
857 | return (EOF); | |
858 | strcLIN(vsplitpt); | |
859 | vsplitpt = 0; | |
860 | return (0); | |
861 | } | |
862 | ||
863 | /* | |
864 | * Vmaxrep determines the maximum repetitition factor | |
865 | * allowed that will yield total line length less than | |
44232d5b | 866 | * LBSIZE characters and also does hacks for the R command. |
09035cec MH |
867 | */ |
868 | vmaxrep(ch, cnt) | |
869 | char ch; | |
870 | register int cnt; | |
871 | { | |
872 | register int len, replen; | |
873 | ||
874 | if (cnt > LBSIZE - 2) | |
875 | cnt = LBSIZE - 2; | |
876 | replen = strlen(genbuf); | |
877 | if (ch == 'R') { | |
878 | len = strlen(cursor); | |
879 | if (replen < len) | |
880 | len = replen; | |
881 | CP(cursor, cursor + len); | |
882 | vUD2 += len; | |
883 | } | |
884 | len = strlen(linebuf); | |
885 | if (len + cnt * replen <= LBSIZE - 2) | |
886 | return (cnt); | |
887 | cnt = (LBSIZE - 2 - len) / replen; | |
888 | if (cnt == 0) { | |
889 | vsave(); | |
890 | error("Line too long"); | |
891 | } | |
892 | return (cnt); | |
893 | } |