Commit | Line | Data |
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dac571dd DF |
1 | /* |
2 | * Copyright (c) 1980 Regents of the University of California. | |
3 | * All rights reserved. The Berkeley software License Agreement | |
4 | * specifies the terms and conditions for redistribution. | |
5 | */ | |
6 | ||
7 | #ifndef lint | |
f9679f70 | 8 | static char sccsid[] = "@(#)ex_vops2.c 6.7 (Berkeley) %G%"; |
dac571dd DF |
9 | #endif not lint |
10 | ||
09035cec MH |
11 | #include "ex.h" |
12 | #include "ex_tty.h" | |
13 | #include "ex_vis.h" | |
14 | ||
15 | /* | |
16 | * Low level routines for operations sequences, | |
17 | * and mostly, insert mode (and a subroutine | |
18 | * to read an input line, including in the echo area.) | |
19 | */ | |
299f2784 MH |
20 | extern char *vUA1, *vUA2; /* mjm: extern; also in ex_vops.c */ |
21 | extern char *vUD1, *vUD2; /* mjm: extern; also in ex_vops.c */ | |
09035cec MH |
22 | |
23 | /* | |
24 | * Obleeperate characters in hardcopy | |
25 | * open with \'s. | |
26 | */ | |
27 | bleep(i, cp) | |
28 | register int i; | |
29 | char *cp; | |
30 | { | |
31 | ||
32 | i -= column(cp); | |
33 | do | |
34 | putchar('\\' | QUOTE); | |
35 | while (--i >= 0); | |
36 | rubble = 1; | |
37 | } | |
38 | ||
39 | /* | |
40 | * Common code for middle part of delete | |
41 | * and change operating on parts of lines. | |
42 | */ | |
43 | vdcMID() | |
44 | { | |
45 | register char *cp; | |
46 | ||
47 | squish(); | |
48 | setLAST(); | |
887e3e0d MH |
49 | if (FIXUNDO) |
50 | vundkind = VCHNG, CP(vutmp, linebuf); | |
09035cec MH |
51 | if (wcursor < cursor) |
52 | cp = wcursor, wcursor = cursor, cursor = cp; | |
53 | vUD1 = vUA1 = vUA2 = cursor; vUD2 = wcursor; | |
54 | return (column(wcursor - 1)); | |
55 | } | |
56 | ||
57 | /* | |
58 | * Take text from linebuf and stick it | |
59 | * in the VBSIZE buffer BUF. Used to save | |
60 | * deleted text of part of line. | |
61 | */ | |
62 | takeout(BUF) | |
63 | char *BUF; | |
64 | { | |
65 | register char *cp; | |
66 | ||
67 | if (wcursor < linebuf) | |
68 | wcursor = linebuf; | |
69 | if (cursor == wcursor) { | |
70 | beep(); | |
71 | return; | |
72 | } | |
73 | if (wcursor < cursor) { | |
74 | cp = wcursor; | |
75 | wcursor = cursor; | |
76 | cursor = cp; | |
77 | } | |
78 | setBUF(BUF); | |
79 | if ((BUF[0] & (QUOTE|TRIM)) == OVERBUF) | |
80 | beep(); | |
81 | } | |
82 | ||
83 | /* | |
84 | * Are we at the end of the printed representation of the | |
85 | * line? Used internally in hardcopy open. | |
86 | */ | |
87 | ateopr() | |
88 | { | |
89 | register int i, c; | |
90 | register char *cp = vtube[destline] + destcol; | |
91 | ||
92 | for (i = WCOLS - destcol; i > 0; i--) { | |
93 | c = *cp++; | |
94 | if (c == 0) | |
95 | return (1); | |
96 | if (c != ' ' && (c & QUOTE) == 0) | |
97 | return (0); | |
98 | } | |
99 | return (1); | |
100 | } | |
101 | ||
102 | /* | |
103 | * Append. | |
104 | * | |
105 | * This routine handles the top level append, doing work | |
106 | * as each new line comes in, and arranging repeatability. | |
107 | * It also handles append with repeat counts, and calculation | |
108 | * of autoindents for new lines. | |
109 | */ | |
110 | bool vaifirst; | |
111 | bool gobbled; | |
112 | char *ogcursor; | |
113 | ||
114 | vappend(ch, cnt, indent) | |
299f2784 | 115 | int ch; /* mjm: char --> int */ |
09035cec MH |
116 | int cnt, indent; |
117 | { | |
118 | register int i; | |
119 | register char *gcursor; | |
120 | bool escape; | |
04379bab | 121 | int repcnt, savedoomed; |
09035cec | 122 | short oldhold = hold; |
48be689d | 123 | int oldmask; |
09035cec MH |
124 | |
125 | /* | |
126 | * Before a move in hardopen when the line is dirty | |
127 | * or we are in the middle of the printed representation, | |
128 | * we retype the line to the left of the cursor so the | |
129 | * insert looks clean. | |
130 | */ | |
131 | if (ch != 'o' && state == HARDOPEN && (rubble || !ateopr())) { | |
132 | rubble = 1; | |
133 | gcursor = cursor; | |
134 | i = *gcursor; | |
135 | *gcursor = ' '; | |
136 | wcursor = gcursor; | |
137 | vmove(); | |
138 | *gcursor = i; | |
139 | } | |
140 | vaifirst = indent == 0; | |
141 | ||
142 | /* | |
143 | * Handle replace character by (eventually) | |
144 | * limiting the number of input characters allowed | |
145 | * in the vgetline routine. | |
146 | */ | |
147 | if (ch == 'r') | |
148 | repcnt = 2; | |
149 | else | |
150 | repcnt = 0; | |
151 | ||
152 | /* | |
153 | * If an autoindent is specified, then | |
154 | * generate a mixture of blanks to tabs to implement | |
155 | * it and place the cursor after the indent. | |
156 | * Text read by the vgetline routine will be placed in genbuf, | |
157 | * so the indent is generated there. | |
158 | */ | |
159 | if (value(AUTOINDENT) && indent != 0) { | |
160 | gcursor = genindent(indent); | |
161 | *gcursor = 0; | |
162 | vgotoCL(qcolumn(cursor - 1, genbuf)); | |
163 | } else { | |
164 | gcursor = genbuf; | |
165 | *gcursor = 0; | |
166 | if (ch == 'o') | |
167 | vfixcurs(); | |
168 | } | |
169 | ||
170 | /* | |
171 | * Prepare for undo. Pointers delimit inserted portion of line. | |
172 | */ | |
173 | vUA1 = vUA2 = cursor; | |
174 | ||
175 | /* | |
176 | * If we are not in a repeated command and a ^@ comes in | |
177 | * then this means the previous inserted text. | |
178 | * If there is none or it was too long to be saved, | |
179 | * then beep() and also arrange to undo any damage done | |
180 | * so far (e.g. if we are a change.) | |
181 | */ | |
182 | if ((vglobp && *vglobp == 0) || peekbr()) { | |
183 | if ((INS[0] & (QUOTE|TRIM)) == OVERBUF) { | |
184 | beep(); | |
185 | if (!splitw) | |
186 | ungetkey('u'); | |
187 | doomed = 0; | |
188 | hold = oldhold; | |
189 | return; | |
190 | } | |
191 | /* | |
192 | * Unread input from INS. | |
193 | * An escape will be generated at end of string. | |
194 | * Hold off n^^2 type update on dumb terminals. | |
195 | */ | |
196 | vglobp = INS; | |
197 | hold |= HOLDQIK; | |
198 | } else if (vglobp == 0) | |
199 | /* | |
200 | * Not a repeated command, get | |
201 | * a new inserted text for repeat. | |
202 | */ | |
203 | INS[0] = 0; | |
204 | ||
205 | /* | |
206 | * For wrapmargin to hack away second space after a '.' | |
207 | * when the first space caused a line break we keep | |
208 | * track that this happened in gobblebl, which says | |
209 | * to gobble up a blank silently. | |
210 | */ | |
211 | gobblebl = 0; | |
212 | ||
48be689d | 213 | oldmask = sigblock(sigmask(SIGWINCH)); |
09035cec MH |
214 | /* |
215 | * Text gathering loop. | |
216 | * New text goes into genbuf starting at gcursor. | |
217 | * cursor preserves place in linebuf where text will eventually go. | |
218 | */ | |
219 | if (*cursor == 0 || state == CRTOPEN) | |
220 | hold |= HOLDROL; | |
221 | for (;;) { | |
222 | if (ch == 'r' && repcnt == 0) | |
223 | escape = 0; | |
224 | else { | |
04379bab | 225 | gcursor = vgetline(repcnt, gcursor, &escape, ch); |
09035cec MH |
226 | |
227 | /* | |
228 | * After an append, stick information | |
229 | * about the ^D's and ^^D's and 0^D's in | |
230 | * the repeated text buffer so repeated | |
231 | * inserts of stuff indented with ^D as backtab's | |
232 | * can work. | |
233 | */ | |
234 | if (HADUP) | |
235 | addtext("^"); | |
236 | else if (HADZERO) | |
237 | addtext("0"); | |
238 | while (CDCNT > 0) | |
239 | addtext("\204"), CDCNT--; | |
240 | if (gobbled) | |
241 | addtext(" "); | |
242 | addtext(ogcursor); | |
243 | } | |
244 | repcnt = 0; | |
245 | ||
246 | /* | |
247 | * Smash the generated and preexisting indents together | |
248 | * and generate one cleanly made out of tabs and spaces | |
249 | * if we are using autoindent. | |
250 | */ | |
251 | if (!vaifirst && value(AUTOINDENT)) { | |
252 | i = fixindent(indent); | |
253 | if (!HADUP) | |
254 | indent = i; | |
255 | gcursor = strend(genbuf); | |
256 | } | |
257 | ||
258 | /* | |
259 | * Limit the repetition count based on maximum | |
260 | * possible line length; do output implied | |
261 | * by further count (> 1) and cons up the new line | |
262 | * in linebuf. | |
263 | */ | |
264 | cnt = vmaxrep(ch, cnt); | |
265 | CP(gcursor + 1, cursor); | |
266 | do { | |
267 | CP(cursor, genbuf); | |
268 | if (cnt > 1) { | |
269 | int oldhold = hold; | |
270 | ||
271 | Outchar = vinschar; | |
272 | hold |= HOLDQIK; | |
273 | printf("%s", genbuf); | |
274 | hold = oldhold; | |
275 | Outchar = vputchar; | |
276 | } | |
277 | cursor += gcursor - genbuf; | |
278 | } while (--cnt > 0); | |
279 | endim(); | |
280 | vUA2 = cursor; | |
281 | if (escape != '\n') | |
282 | CP(cursor, gcursor + 1); | |
283 | ||
284 | /* | |
285 | * If doomed characters remain, clobber them, | |
286 | * and reopen the line to get the display exact. | |
287 | */ | |
288 | if (state != HARDOPEN) { | |
289 | DEPTH(vcline) = 0; | |
04379bab | 290 | savedoomed = doomed; |
09035cec MH |
291 | if (doomed > 0) { |
292 | register int cind = cindent(); | |
293 | ||
294 | physdc(cind, cind + doomed); | |
295 | doomed = 0; | |
296 | } | |
297 | i = vreopen(LINE(vcline), lineDOT(), vcline); | |
f0f2d980 MH |
298 | #ifdef TRACE |
299 | if (trace) | |
300 | fprintf(trace, "restoring doomed from %d to %d\n", doomed, savedoomed); | |
301 | #endif | |
302 | if (ch == 'R') | |
303 | doomed = savedoomed; | |
09035cec MH |
304 | } |
305 | ||
306 | /* | |
307 | * All done unless we are continuing on to another line. | |
308 | */ | |
309 | if (escape != '\n') | |
310 | break; | |
311 | ||
312 | /* | |
313 | * Set up for the new line. | |
314 | * First save the current line, then construct a new | |
315 | * first image for the continuation line consisting | |
316 | * of any new autoindent plus the pushed ahead text. | |
317 | */ | |
318 | killU(); | |
319 | addtext(gobblebl ? " " : "\n"); | |
320 | vsave(); | |
321 | cnt = 1; | |
322 | if (value(AUTOINDENT)) { | |
323 | #ifdef LISPCODE | |
324 | if (value(LISP)) | |
325 | indent = lindent(dot + 1); | |
326 | else | |
327 | #endif | |
328 | if (!HADUP && vaifirst) | |
329 | indent = whitecnt(linebuf); | |
330 | vaifirst = 0; | |
331 | strcLIN(vpastwh(gcursor + 1)); | |
332 | gcursor = genindent(indent); | |
333 | *gcursor = 0; | |
334 | if (gcursor + strlen(linebuf) > &genbuf[LBSIZE - 2]) | |
335 | gcursor = genbuf; | |
336 | CP(gcursor, linebuf); | |
337 | } else { | |
338 | CP(genbuf, gcursor + 1); | |
339 | gcursor = genbuf; | |
340 | } | |
341 | ||
342 | /* | |
343 | * If we started out as a single line operation and are now | |
344 | * turning into a multi-line change, then we had better yank | |
345 | * out dot before it changes so that undo will work | |
346 | * correctly later. | |
347 | */ | |
887e3e0d | 348 | if (FIXUNDO && vundkind == VCHNG) { |
09035cec MH |
349 | vremote(1, yank, 0); |
350 | undap1--; | |
351 | } | |
352 | ||
353 | /* | |
354 | * Now do the append of the new line in the buffer, | |
355 | * and update the display. If slowopen | |
356 | * we don't do very much. | |
357 | */ | |
358 | vdoappend(genbuf); | |
359 | vundkind = VMANYINS; | |
360 | vcline++; | |
361 | if (state != VISUAL) | |
362 | vshow(dot, NOLINE); | |
363 | else { | |
364 | i += LINE(vcline - 1); | |
365 | vopen(dot, i); | |
366 | if (value(SLOWOPEN)) | |
367 | vscrap(); | |
368 | else | |
369 | vsync1(LINE(vcline)); | |
370 | } | |
371 | strcLIN(gcursor); | |
372 | *gcursor = 0; | |
373 | cursor = linebuf; | |
374 | vgotoCL(qcolumn(cursor - 1, genbuf)); | |
375 | } | |
376 | ||
377 | /* | |
378 | * All done with insertion, position the cursor | |
379 | * and sync the screen. | |
380 | */ | |
381 | hold = oldhold; | |
382 | if (cursor > linebuf) | |
383 | cursor--; | |
384 | if (state != HARDOPEN) | |
385 | vsyncCL(); | |
386 | else if (cursor > linebuf) | |
387 | back1(); | |
388 | doomed = 0; | |
389 | wcursor = cursor; | |
390 | vmove(); | |
48be689d | 391 | (void)sigsetmask(oldmask); |
09035cec MH |
392 | } |
393 | ||
394 | /* | |
395 | * Subroutine for vgetline to back up a single character position, | |
396 | * backwards around end of lines (vgoto can't hack columns which are | |
397 | * less than 0 in general). | |
398 | */ | |
399 | back1() | |
400 | { | |
401 | ||
402 | vgoto(destline - 1, WCOLS + destcol - 1); | |
403 | } | |
404 | ||
405 | /* | |
406 | * Get a line into genbuf after gcursor. | |
407 | * Cnt limits the number of input characters | |
408 | * accepted and is used for handling the replace | |
409 | * single character command. Aescaped is the location | |
410 | * where we stick a termination indicator (whether we | |
411 | * ended with an ESCAPE or a newline/return. | |
412 | * | |
413 | * We do erase-kill type processing here and also | |
414 | * are careful about the way we do this so that it is | |
415 | * repeatable. (I.e. so that your kill doesn't happen, | |
416 | * when you repeat an insert if it was escaped with \ the | |
04379bab MH |
417 | * first time you did it. commch is the command character |
418 | * involved, including the prompt for readline. | |
09035cec MH |
419 | */ |
420 | char * | |
04379bab | 421 | vgetline(cnt, gcursor, aescaped, commch) |
09035cec MH |
422 | int cnt; |
423 | register char *gcursor; | |
424 | bool *aescaped; | |
04379bab | 425 | char commch; |
09035cec MH |
426 | { |
427 | register int c, ch; | |
428 | register char *cp; | |
04379bab | 429 | int x, y, iwhite, backsl=0; |
09035cec | 430 | char *iglobp; |
d266c416 | 431 | char cstr[2]; |
09035cec MH |
432 | int (*OO)() = Outchar; |
433 | ||
434 | /* | |
435 | * Clear the output state and counters | |
436 | * for autoindent backwards motion (counts of ^D, etc.) | |
437 | * Remember how much white space at beginning of line so | |
438 | * as not to allow backspace over autoindent. | |
439 | */ | |
440 | *aescaped = 0; | |
441 | ogcursor = gcursor; | |
442 | flusho(); | |
443 | CDCNT = 0; | |
444 | HADUP = 0; | |
445 | HADZERO = 0; | |
446 | gobbled = 0; | |
447 | iwhite = whitecnt(genbuf); | |
448 | iglobp = vglobp; | |
449 | ||
450 | /* | |
451 | * Carefully avoid using vinschar in the echo area. | |
452 | */ | |
453 | if (splitw) | |
454 | Outchar = vputchar; | |
455 | else { | |
456 | Outchar = vinschar; | |
457 | vprepins(); | |
458 | } | |
459 | for (;;) { | |
04379bab | 460 | backsl = 0; |
09035cec MH |
461 | if (gobblebl) |
462 | gobblebl--; | |
463 | if (cnt != 0) { | |
464 | cnt--; | |
465 | if (cnt == 0) | |
466 | goto vadone; | |
467 | } | |
d266c416 MH |
468 | c = getkey(); |
469 | if (c != ATTN) | |
470 | c &= (QUOTE|TRIM); | |
471 | ch = c; | |
472 | maphopcnt = 0; | |
04379bab | 473 | if (vglobp == 0 && Peekkey == 0 && commch != 'r') |
887e3e0d | 474 | while ((ch = map(c, immacs)) != c) { |
09035cec | 475 | c = ch; |
887e3e0d MH |
476 | if (!value(REMAP)) |
477 | break; | |
d266c416 MH |
478 | if (++maphopcnt > 256) |
479 | error("Infinite macro loop"); | |
887e3e0d | 480 | } |
09035cec MH |
481 | if (!iglobp) { |
482 | ||
483 | /* | |
484 | * Erase-kill type processing. | |
485 | * Only happens if we were not reading | |
486 | * from untyped input when we started. | |
487 | * Map users erase to ^H, kill to -1 for switch. | |
488 | */ | |
d266c416 | 489 | #ifndef USG3TTY |
09035cec MH |
490 | if (c == tty.sg_erase) |
491 | c = CTRL(h); | |
492 | else if (c == tty.sg_kill) | |
493 | c = -1; | |
d266c416 MH |
494 | #else |
495 | if (c == tty.c_cc[VERASE]) | |
496 | c = CTRL(h); | |
497 | else if (c == tty.c_cc[VKILL]) | |
498 | c = -1; | |
499 | #endif | |
09035cec MH |
500 | switch (c) { |
501 | ||
502 | /* | |
503 | * ^? Interrupt drops you back to visual | |
504 | * command mode with an unread interrupt | |
505 | * still in the input buffer. | |
506 | * | |
507 | * ^\ Quit does the same as interrupt. | |
508 | * If you are a ex command rather than | |
509 | * a vi command this will drop you | |
510 | * back to command mode for sure. | |
511 | */ | |
512 | case ATTN: | |
513 | case QUIT: | |
514 | ungetkey(c); | |
515 | goto vadone; | |
516 | ||
517 | /* | |
518 | * ^H Backs up a character in the input. | |
519 | * | |
520 | * BUG: Can't back around line boundaries. | |
521 | * This is hard because stuff has | |
522 | * already been saved for repeat. | |
523 | */ | |
524 | case CTRL(h): | |
525 | bakchar: | |
526 | cp = gcursor - 1; | |
527 | if (cp < ogcursor) { | |
528 | if (splitw) { | |
529 | /* | |
530 | * Backspacing over readecho | |
531 | * prompt. Pretend delete but | |
532 | * don't beep. | |
533 | */ | |
534 | ungetkey(c); | |
535 | goto vadone; | |
536 | } | |
537 | beep(); | |
538 | continue; | |
539 | } | |
540 | goto vbackup; | |
541 | ||
542 | /* | |
543 | * ^W Back up a white/non-white word. | |
544 | */ | |
545 | case CTRL(w): | |
546 | wdkind = 1; | |
547 | for (cp = gcursor; cp > ogcursor && isspace(cp[-1]); cp--) | |
548 | continue; | |
549 | for (c = wordch(cp - 1); | |
550 | cp > ogcursor && wordof(c, cp - 1); cp--) | |
551 | continue; | |
552 | goto vbackup; | |
553 | ||
554 | /* | |
555 | * users kill Kill input on this line, back to | |
556 | * the autoindent. | |
557 | */ | |
558 | case -1: | |
559 | cp = ogcursor; | |
560 | vbackup: | |
561 | if (cp == gcursor) { | |
562 | beep(); | |
563 | continue; | |
564 | } | |
565 | endim(); | |
566 | *cp = 0; | |
567 | c = cindent(); | |
568 | vgotoCL(qcolumn(cursor - 1, genbuf)); | |
569 | if (doomed >= 0) | |
570 | doomed += c - cindent(); | |
571 | gcursor = cp; | |
572 | continue; | |
573 | ||
574 | /* | |
575 | * \ Followed by erase or kill | |
576 | * maps to just the erase or kill. | |
577 | */ | |
578 | case '\\': | |
579 | x = destcol, y = destline; | |
580 | putchar('\\'); | |
581 | vcsync(); | |
582 | c = getkey(); | |
d266c416 | 583 | #ifndef USG3TTY |
04379bab | 584 | if (c == tty.sg_erase || c == tty.sg_kill) |
d266c416 MH |
585 | #else |
586 | if (c == tty.c_cc[VERASE] | |
04379bab | 587 | || c == tty.c_cc[VKILL]) |
d266c416 | 588 | #endif |
04379bab | 589 | { |
09035cec MH |
590 | vgoto(y, x); |
591 | if (doomed >= 0) | |
592 | doomed++; | |
593 | goto def; | |
594 | } | |
595 | ungetkey(c), c = '\\'; | |
04379bab MH |
596 | backsl = 1; |
597 | break; | |
09035cec MH |
598 | |
599 | /* | |
600 | * ^Q Super quote following character | |
601 | * Only ^@ is verboten (trapped at | |
602 | * a lower level) and \n forces a line | |
603 | * split so doesn't really go in. | |
604 | * | |
605 | * ^V Synonym for ^Q | |
606 | */ | |
607 | case CTRL(q): | |
608 | case CTRL(v): | |
609 | x = destcol, y = destline; | |
610 | putchar('^'); | |
611 | vgoto(y, x); | |
612 | c = getkey(); | |
613 | #ifdef TIOCSETC | |
614 | if (c == ATTN) | |
615 | c = nttyc.t_intrc; | |
616 | #endif | |
617 | if (c != NL) { | |
618 | if (doomed >= 0) | |
619 | doomed++; | |
620 | goto def; | |
621 | } | |
622 | break; | |
623 | } | |
624 | } | |
625 | ||
626 | /* | |
627 | * If we get a blank not in the echo area | |
628 | * consider splitting the window in the wrapmargin. | |
629 | */ | |
d266c416 MH |
630 | if (c != NL && !splitw) { |
631 | if (c == ' ' && gobblebl) { | |
09035cec MH |
632 | gobbled = 1; |
633 | continue; | |
634 | } | |
04379bab MH |
635 | if (value(WRAPMARGIN) && |
636 | (outcol >= OCOLUMNS - value(WRAPMARGIN) || | |
637 | backsl && outcol==0) && | |
638 | commch != 'r') { | |
d266c416 MH |
639 | /* |
640 | * At end of word and hit wrapmargin. | |
641 | * Move the word to next line and keep going. | |
642 | */ | |
643 | wdkind = 1; | |
644 | *gcursor++ = c; | |
04379bab MH |
645 | if (backsl) |
646 | *gcursor++ = getkey(); | |
d266c416 MH |
647 | *gcursor = 0; |
648 | /* | |
649 | * Find end of previous word if we are past it. | |
650 | */ | |
651 | for (cp=gcursor; cp>ogcursor && isspace(cp[-1]); cp--) | |
652 | ; | |
04379bab | 653 | if (outcol+(backsl?OCOLUMNS:0) - (gcursor-cp) >= OCOLUMNS - value(WRAPMARGIN)) { |
d266c416 MH |
654 | /* |
655 | * Find beginning of previous word. | |
656 | */ | |
657 | for (; cp>ogcursor && !isspace(cp[-1]); cp--) | |
658 | ; | |
659 | if (cp <= ogcursor) { | |
660 | /* | |
661 | * There is a single word that | |
662 | * is too long to fit. Just | |
663 | * let it pass, but beep for | |
664 | * each new letter to warn | |
665 | * the luser. | |
666 | */ | |
667 | c = *--gcursor; | |
668 | *gcursor = 0; | |
669 | beep(); | |
670 | goto dontbreak; | |
671 | } | |
672 | /* | |
673 | * Save it for next line. | |
674 | */ | |
675 | macpush(cp, 0); | |
676 | cp--; | |
677 | } | |
678 | macpush("\n", 0); | |
679 | /* | |
680 | * Erase white space before the word. | |
681 | */ | |
682 | while (cp > ogcursor && isspace(cp[-1])) | |
683 | cp--; /* skip blank */ | |
684 | gobblebl = 3; | |
685 | goto vbackup; | |
09035cec | 686 | } |
d266c416 MH |
687 | dontbreak:; |
688 | } | |
689 | ||
690 | /* | |
691 | * Word abbreviation mode. | |
692 | */ | |
693 | cstr[0] = c; | |
694 | if (anyabbrs && gcursor > ogcursor && !wordch(cstr) && wordch(gcursor-1)) { | |
695 | int wdtype, abno; | |
696 | ||
697 | cstr[1] = 0; | |
698 | wdkind = 1; | |
699 | cp = gcursor - 1; | |
700 | for (wdtype = wordch(cp - 1); | |
701 | cp > ogcursor && wordof(wdtype, cp - 1); cp--) | |
702 | ; | |
703 | *gcursor = 0; | |
704 | for (abno=0; abbrevs[abno].mapto; abno++) { | |
705 | if (eq(cp, abbrevs[abno].cap)) { | |
706 | macpush(cstr, 0); | |
707 | macpush(abbrevs[abno].mapto); | |
708 | goto vbackup; | |
709 | } | |
710 | } | |
09035cec | 711 | } |
d266c416 | 712 | |
09035cec MH |
713 | switch (c) { |
714 | ||
715 | /* | |
716 | * ^M Except in repeat maps to \n. | |
717 | */ | |
718 | case CR: | |
719 | if (vglobp) | |
720 | goto def; | |
721 | c = '\n'; | |
722 | /* presto chango ... */ | |
723 | ||
724 | /* | |
725 | * \n Start new line. | |
726 | */ | |
727 | case NL: | |
728 | *aescaped = c; | |
729 | goto vadone; | |
730 | ||
731 | /* | |
732 | * escape End insert unless repeat and more to repeat. | |
733 | */ | |
734 | case ESCAPE: | |
735 | if (lastvgk) | |
736 | goto def; | |
737 | goto vadone; | |
738 | ||
739 | /* | |
740 | * ^D Backtab. | |
741 | * ^T Software forward tab. | |
742 | * | |
743 | * Unless in repeat where this means these | |
744 | * were superquoted in. | |
745 | */ | |
746 | case CTRL(d): | |
747 | case CTRL(t): | |
748 | if (vglobp) | |
749 | goto def; | |
750 | /* fall into ... */ | |
751 | ||
752 | /* | |
753 | * ^D|QUOTE Is a backtab (in a repeated command). | |
754 | */ | |
755 | case CTRL(d) | QUOTE: | |
756 | *gcursor = 0; | |
757 | cp = vpastwh(genbuf); | |
758 | c = whitecnt(genbuf); | |
759 | if (ch == CTRL(t)) { | |
760 | /* | |
761 | * ^t just generates new indent replacing | |
762 | * current white space rounded up to soft | |
763 | * tab stop increment. | |
764 | */ | |
765 | if (cp != gcursor) | |
766 | /* | |
767 | * BUG: Don't hack ^T except | |
768 | * right after initial | |
769 | * white space. | |
770 | */ | |
771 | continue; | |
772 | cp = genindent(iwhite = backtab(c + value(SHIFTWIDTH) + 1)); | |
773 | ogcursor = cp; | |
774 | goto vbackup; | |
775 | } | |
776 | /* | |
777 | * ^D works only if we are at the (end of) the | |
778 | * generated autoindent. We count the ^D for repeat | |
779 | * purposes. | |
780 | */ | |
781 | if (c == iwhite && c != 0) | |
782 | if (cp == gcursor) { | |
783 | iwhite = backtab(c); | |
784 | CDCNT++; | |
785 | ogcursor = cp = genindent(iwhite); | |
786 | goto vbackup; | |
787 | } else if (&cp[1] == gcursor && | |
788 | (*cp == '^' || *cp == '0')) { | |
789 | /* | |
790 | * ^^D moves to margin, then back | |
791 | * to current indent on next line. | |
792 | * | |
793 | * 0^D moves to margin and then | |
794 | * stays there. | |
795 | */ | |
796 | HADZERO = *cp == '0'; | |
797 | ogcursor = cp = genbuf; | |
798 | HADUP = 1 - HADZERO; | |
799 | CDCNT = 1; | |
800 | endim(); | |
801 | back1(); | |
887e3e0d | 802 | vputchar(' '); |
09035cec MH |
803 | goto vbackup; |
804 | } | |
805 | if (vglobp && vglobp - iglobp >= 2 && | |
806 | (vglobp[-2] == '^' || vglobp[-2] == '0') | |
807 | && gcursor == ogcursor + 1) | |
808 | goto bakchar; | |
809 | continue; | |
810 | ||
811 | default: | |
812 | /* | |
813 | * Possibly discard control inputs. | |
814 | */ | |
815 | if (!vglobp && junk(c)) { | |
816 | beep(); | |
817 | continue; | |
818 | } | |
819 | def: | |
04379bab | 820 | if (!backsl) { |
299f2784 | 821 | int cnt; |
04379bab | 822 | putchar(c); |
0ab2d2a9 | 823 | flush(); |
04379bab | 824 | } |
09035cec MH |
825 | if (gcursor > &genbuf[LBSIZE - 2]) |
826 | error("Line too long"); | |
827 | *gcursor++ = c & TRIM; | |
828 | vcsync(); | |
09035cec MH |
829 | if (value(SHOWMATCH) && !iglobp) |
830 | if (c == ')' || c == '}') | |
831 | lsmatch(gcursor); | |
09035cec MH |
832 | continue; |
833 | } | |
834 | } | |
835 | vadone: | |
836 | *gcursor = 0; | |
d266c416 MH |
837 | if (Outchar != termchar) |
838 | Outchar = OO; | |
09035cec MH |
839 | endim(); |
840 | return (gcursor); | |
841 | } | |
842 | ||
843 | int vgetsplit(); | |
844 | char *vsplitpt; | |
845 | ||
846 | /* | |
847 | * Append the line in buffer at lp | |
848 | * to the buffer after dot. | |
849 | */ | |
850 | vdoappend(lp) | |
851 | char *lp; | |
852 | { | |
853 | register int oing = inglobal; | |
854 | ||
855 | vsplitpt = lp; | |
856 | inglobal = 1; | |
857 | ignore(append(vgetsplit, dot)); | |
858 | inglobal = oing; | |
859 | } | |
860 | ||
861 | /* | |
862 | * Subroutine for vdoappend to pass to append. | |
863 | */ | |
864 | vgetsplit() | |
865 | { | |
866 | ||
867 | if (vsplitpt == 0) | |
868 | return (EOF); | |
869 | strcLIN(vsplitpt); | |
870 | vsplitpt = 0; | |
871 | return (0); | |
872 | } | |
873 | ||
874 | /* | |
875 | * Vmaxrep determines the maximum repetitition factor | |
876 | * allowed that will yield total line length less than | |
44232d5b | 877 | * LBSIZE characters and also does hacks for the R command. |
09035cec MH |
878 | */ |
879 | vmaxrep(ch, cnt) | |
880 | char ch; | |
881 | register int cnt; | |
882 | { | |
883 | register int len, replen; | |
884 | ||
885 | if (cnt > LBSIZE - 2) | |
886 | cnt = LBSIZE - 2; | |
887 | replen = strlen(genbuf); | |
888 | if (ch == 'R') { | |
889 | len = strlen(cursor); | |
890 | if (replen < len) | |
891 | len = replen; | |
892 | CP(cursor, cursor + len); | |
893 | vUD2 += len; | |
894 | } | |
895 | len = strlen(linebuf); | |
896 | if (len + cnt * replen <= LBSIZE - 2) | |
897 | return (cnt); | |
898 | cnt = (LBSIZE - 2 - len) / replen; | |
899 | if (cnt == 0) { | |
900 | vsave(); | |
901 | error("Line too long"); | |
902 | } | |
903 | return (cnt); | |
904 | } |