Commit | Line | Data |
---|---|---|
ad787160 C |
1 | /*- |
2 | * Copyright (c) 1980, 1993 | |
3 | * The Regents of the University of California. All rights reserved. | |
4 | * | |
5 | * This module is believed to contain source code proprietary to AT&T. | |
6 | * Use and redistribution is subject to the Berkeley Software License | |
7 | * Agreement and your Software Agreement with AT&T (Western Electric). | |
dac571dd DF |
8 | */ |
9 | ||
10 | #ifndef lint | |
ad787160 C |
11 | static char sccsid[] = "@(#)ex_vops2.c 8.1 (Berkeley) 6/9/93"; |
12 | #endif /* not lint */ | |
dac571dd | 13 | |
09035cec MH |
14 | #include "ex.h" |
15 | #include "ex_tty.h" | |
16 | #include "ex_vis.h" | |
17 | ||
18 | /* | |
19 | * Low level routines for operations sequences, | |
20 | * and mostly, insert mode (and a subroutine | |
21 | * to read an input line, including in the echo area.) | |
22 | */ | |
299f2784 MH |
23 | extern char *vUA1, *vUA2; /* mjm: extern; also in ex_vops.c */ |
24 | extern char *vUD1, *vUD2; /* mjm: extern; also in ex_vops.c */ | |
09035cec MH |
25 | |
26 | /* | |
27 | * Obleeperate characters in hardcopy | |
28 | * open with \'s. | |
29 | */ | |
30 | bleep(i, cp) | |
31 | register int i; | |
32 | char *cp; | |
33 | { | |
34 | ||
35 | i -= column(cp); | |
36 | do | |
5a6c967e | 37 | ex_putchar('\\' | QUOTE); |
09035cec MH |
38 | while (--i >= 0); |
39 | rubble = 1; | |
40 | } | |
41 | ||
42 | /* | |
43 | * Common code for middle part of delete | |
44 | * and change operating on parts of lines. | |
45 | */ | |
46 | vdcMID() | |
47 | { | |
48 | register char *cp; | |
49 | ||
50 | squish(); | |
51 | setLAST(); | |
887e3e0d MH |
52 | if (FIXUNDO) |
53 | vundkind = VCHNG, CP(vutmp, linebuf); | |
09035cec MH |
54 | if (wcursor < cursor) |
55 | cp = wcursor, wcursor = cursor, cursor = cp; | |
56 | vUD1 = vUA1 = vUA2 = cursor; vUD2 = wcursor; | |
57 | return (column(wcursor - 1)); | |
58 | } | |
59 | ||
60 | /* | |
61 | * Take text from linebuf and stick it | |
62 | * in the VBSIZE buffer BUF. Used to save | |
63 | * deleted text of part of line. | |
64 | */ | |
65 | takeout(BUF) | |
66 | char *BUF; | |
67 | { | |
68 | register char *cp; | |
69 | ||
70 | if (wcursor < linebuf) | |
71 | wcursor = linebuf; | |
72 | if (cursor == wcursor) { | |
73 | beep(); | |
74 | return; | |
75 | } | |
76 | if (wcursor < cursor) { | |
77 | cp = wcursor; | |
78 | wcursor = cursor; | |
79 | cursor = cp; | |
80 | } | |
5a6c967e | 81 | ex_setBUF(BUF); |
09035cec MH |
82 | if ((BUF[0] & (QUOTE|TRIM)) == OVERBUF) |
83 | beep(); | |
84 | } | |
85 | ||
86 | /* | |
87 | * Are we at the end of the printed representation of the | |
88 | * line? Used internally in hardcopy open. | |
89 | */ | |
90 | ateopr() | |
91 | { | |
92 | register int i, c; | |
93 | register char *cp = vtube[destline] + destcol; | |
94 | ||
95 | for (i = WCOLS - destcol; i > 0; i--) { | |
96 | c = *cp++; | |
97 | if (c == 0) | |
98 | return (1); | |
99 | if (c != ' ' && (c & QUOTE) == 0) | |
100 | return (0); | |
101 | } | |
102 | return (1); | |
103 | } | |
104 | ||
105 | /* | |
106 | * Append. | |
107 | * | |
108 | * This routine handles the top level append, doing work | |
109 | * as each new line comes in, and arranging repeatability. | |
110 | * It also handles append with repeat counts, and calculation | |
111 | * of autoindents for new lines. | |
112 | */ | |
113 | bool vaifirst; | |
114 | bool gobbled; | |
115 | char *ogcursor; | |
116 | ||
117 | vappend(ch, cnt, indent) | |
299f2784 | 118 | int ch; /* mjm: char --> int */ |
09035cec MH |
119 | int cnt, indent; |
120 | { | |
121 | register int i; | |
122 | register char *gcursor; | |
123 | bool escape; | |
04379bab | 124 | int repcnt, savedoomed; |
09035cec | 125 | short oldhold = hold; |
5a6c967e | 126 | #ifdef SIGWINCH |
48be689d | 127 | int oldmask; |
5a6c967e | 128 | #endif |
09035cec MH |
129 | |
130 | /* | |
131 | * Before a move in hardopen when the line is dirty | |
132 | * or we are in the middle of the printed representation, | |
133 | * we retype the line to the left of the cursor so the | |
134 | * insert looks clean. | |
135 | */ | |
136 | if (ch != 'o' && state == HARDOPEN && (rubble || !ateopr())) { | |
137 | rubble = 1; | |
138 | gcursor = cursor; | |
139 | i = *gcursor; | |
140 | *gcursor = ' '; | |
141 | wcursor = gcursor; | |
142 | vmove(); | |
143 | *gcursor = i; | |
144 | } | |
145 | vaifirst = indent == 0; | |
146 | ||
147 | /* | |
148 | * Handle replace character by (eventually) | |
149 | * limiting the number of input characters allowed | |
150 | * in the vgetline routine. | |
151 | */ | |
152 | if (ch == 'r') | |
153 | repcnt = 2; | |
154 | else | |
155 | repcnt = 0; | |
156 | ||
157 | /* | |
158 | * If an autoindent is specified, then | |
159 | * generate a mixture of blanks to tabs to implement | |
160 | * it and place the cursor after the indent. | |
161 | * Text read by the vgetline routine will be placed in genbuf, | |
162 | * so the indent is generated there. | |
163 | */ | |
164 | if (value(AUTOINDENT) && indent != 0) { | |
165 | gcursor = genindent(indent); | |
166 | *gcursor = 0; | |
167 | vgotoCL(qcolumn(cursor - 1, genbuf)); | |
168 | } else { | |
169 | gcursor = genbuf; | |
170 | *gcursor = 0; | |
171 | if (ch == 'o') | |
172 | vfixcurs(); | |
173 | } | |
174 | ||
175 | /* | |
176 | * Prepare for undo. Pointers delimit inserted portion of line. | |
177 | */ | |
178 | vUA1 = vUA2 = cursor; | |
179 | ||
180 | /* | |
181 | * If we are not in a repeated command and a ^@ comes in | |
182 | * then this means the previous inserted text. | |
183 | * If there is none or it was too long to be saved, | |
184 | * then beep() and also arrange to undo any damage done | |
185 | * so far (e.g. if we are a change.) | |
186 | */ | |
187 | if ((vglobp && *vglobp == 0) || peekbr()) { | |
188 | if ((INS[0] & (QUOTE|TRIM)) == OVERBUF) { | |
189 | beep(); | |
190 | if (!splitw) | |
191 | ungetkey('u'); | |
192 | doomed = 0; | |
193 | hold = oldhold; | |
194 | return; | |
195 | } | |
196 | /* | |
197 | * Unread input from INS. | |
198 | * An escape will be generated at end of string. | |
199 | * Hold off n^^2 type update on dumb terminals. | |
200 | */ | |
201 | vglobp = INS; | |
202 | hold |= HOLDQIK; | |
203 | } else if (vglobp == 0) | |
204 | /* | |
205 | * Not a repeated command, get | |
206 | * a new inserted text for repeat. | |
207 | */ | |
208 | INS[0] = 0; | |
209 | ||
210 | /* | |
211 | * For wrapmargin to hack away second space after a '.' | |
212 | * when the first space caused a line break we keep | |
213 | * track that this happened in gobblebl, which says | |
214 | * to gobble up a blank silently. | |
215 | */ | |
216 | gobblebl = 0; | |
217 | ||
5a6c967e | 218 | #ifdef SIGWINCH |
48be689d | 219 | oldmask = sigblock(sigmask(SIGWINCH)); |
5a6c967e | 220 | #endif |
09035cec MH |
221 | /* |
222 | * Text gathering loop. | |
223 | * New text goes into genbuf starting at gcursor. | |
224 | * cursor preserves place in linebuf where text will eventually go. | |
225 | */ | |
226 | if (*cursor == 0 || state == CRTOPEN) | |
227 | hold |= HOLDROL; | |
228 | for (;;) { | |
229 | if (ch == 'r' && repcnt == 0) | |
230 | escape = 0; | |
231 | else { | |
04379bab | 232 | gcursor = vgetline(repcnt, gcursor, &escape, ch); |
09035cec MH |
233 | |
234 | /* | |
235 | * After an append, stick information | |
236 | * about the ^D's and ^^D's and 0^D's in | |
237 | * the repeated text buffer so repeated | |
238 | * inserts of stuff indented with ^D as backtab's | |
239 | * can work. | |
240 | */ | |
241 | if (HADUP) | |
242 | addtext("^"); | |
243 | else if (HADZERO) | |
244 | addtext("0"); | |
245 | while (CDCNT > 0) | |
246 | addtext("\204"), CDCNT--; | |
247 | if (gobbled) | |
248 | addtext(" "); | |
249 | addtext(ogcursor); | |
250 | } | |
251 | repcnt = 0; | |
252 | ||
253 | /* | |
254 | * Smash the generated and preexisting indents together | |
255 | * and generate one cleanly made out of tabs and spaces | |
256 | * if we are using autoindent. | |
257 | */ | |
258 | if (!vaifirst && value(AUTOINDENT)) { | |
259 | i = fixindent(indent); | |
260 | if (!HADUP) | |
261 | indent = i; | |
262 | gcursor = strend(genbuf); | |
263 | } | |
264 | ||
265 | /* | |
266 | * Limit the repetition count based on maximum | |
267 | * possible line length; do output implied | |
268 | * by further count (> 1) and cons up the new line | |
269 | * in linebuf. | |
270 | */ | |
271 | cnt = vmaxrep(ch, cnt); | |
272 | CP(gcursor + 1, cursor); | |
273 | do { | |
274 | CP(cursor, genbuf); | |
275 | if (cnt > 1) { | |
276 | int oldhold = hold; | |
277 | ||
278 | Outchar = vinschar; | |
279 | hold |= HOLDQIK; | |
5a6c967e | 280 | ex_printf("%s", genbuf); |
09035cec MH |
281 | hold = oldhold; |
282 | Outchar = vputchar; | |
283 | } | |
284 | cursor += gcursor - genbuf; | |
285 | } while (--cnt > 0); | |
286 | endim(); | |
287 | vUA2 = cursor; | |
288 | if (escape != '\n') | |
289 | CP(cursor, gcursor + 1); | |
290 | ||
291 | /* | |
292 | * If doomed characters remain, clobber them, | |
293 | * and reopen the line to get the display exact. | |
294 | */ | |
295 | if (state != HARDOPEN) { | |
296 | DEPTH(vcline) = 0; | |
04379bab | 297 | savedoomed = doomed; |
09035cec MH |
298 | if (doomed > 0) { |
299 | register int cind = cindent(); | |
300 | ||
301 | physdc(cind, cind + doomed); | |
302 | doomed = 0; | |
303 | } | |
304 | i = vreopen(LINE(vcline), lineDOT(), vcline); | |
f0f2d980 MH |
305 | #ifdef TRACE |
306 | if (trace) | |
307 | fprintf(trace, "restoring doomed from %d to %d\n", doomed, savedoomed); | |
308 | #endif | |
309 | if (ch == 'R') | |
310 | doomed = savedoomed; | |
09035cec MH |
311 | } |
312 | ||
313 | /* | |
314 | * All done unless we are continuing on to another line. | |
315 | */ | |
316 | if (escape != '\n') | |
317 | break; | |
318 | ||
319 | /* | |
320 | * Set up for the new line. | |
321 | * First save the current line, then construct a new | |
322 | * first image for the continuation line consisting | |
323 | * of any new autoindent plus the pushed ahead text. | |
324 | */ | |
325 | killU(); | |
326 | addtext(gobblebl ? " " : "\n"); | |
327 | vsave(); | |
328 | cnt = 1; | |
329 | if (value(AUTOINDENT)) { | |
330 | #ifdef LISPCODE | |
331 | if (value(LISP)) | |
332 | indent = lindent(dot + 1); | |
333 | else | |
334 | #endif | |
335 | if (!HADUP && vaifirst) | |
336 | indent = whitecnt(linebuf); | |
337 | vaifirst = 0; | |
338 | strcLIN(vpastwh(gcursor + 1)); | |
339 | gcursor = genindent(indent); | |
340 | *gcursor = 0; | |
341 | if (gcursor + strlen(linebuf) > &genbuf[LBSIZE - 2]) | |
342 | gcursor = genbuf; | |
343 | CP(gcursor, linebuf); | |
344 | } else { | |
345 | CP(genbuf, gcursor + 1); | |
346 | gcursor = genbuf; | |
347 | } | |
348 | ||
349 | /* | |
350 | * If we started out as a single line operation and are now | |
351 | * turning into a multi-line change, then we had better yank | |
352 | * out dot before it changes so that undo will work | |
353 | * correctly later. | |
354 | */ | |
887e3e0d | 355 | if (FIXUNDO && vundkind == VCHNG) { |
09035cec MH |
356 | vremote(1, yank, 0); |
357 | undap1--; | |
358 | } | |
359 | ||
360 | /* | |
361 | * Now do the append of the new line in the buffer, | |
362 | * and update the display. If slowopen | |
363 | * we don't do very much. | |
364 | */ | |
365 | vdoappend(genbuf); | |
366 | vundkind = VMANYINS; | |
367 | vcline++; | |
368 | if (state != VISUAL) | |
369 | vshow(dot, NOLINE); | |
370 | else { | |
371 | i += LINE(vcline - 1); | |
372 | vopen(dot, i); | |
373 | if (value(SLOWOPEN)) | |
374 | vscrap(); | |
375 | else | |
376 | vsync1(LINE(vcline)); | |
377 | } | |
378 | strcLIN(gcursor); | |
379 | *gcursor = 0; | |
380 | cursor = linebuf; | |
381 | vgotoCL(qcolumn(cursor - 1, genbuf)); | |
382 | } | |
383 | ||
384 | /* | |
385 | * All done with insertion, position the cursor | |
386 | * and sync the screen. | |
387 | */ | |
388 | hold = oldhold; | |
389 | if (cursor > linebuf) | |
390 | cursor--; | |
391 | if (state != HARDOPEN) | |
392 | vsyncCL(); | |
393 | else if (cursor > linebuf) | |
394 | back1(); | |
395 | doomed = 0; | |
396 | wcursor = cursor; | |
397 | vmove(); | |
5a6c967e | 398 | #ifdef SIGWINCH |
48be689d | 399 | (void)sigsetmask(oldmask); |
5a6c967e | 400 | #endif |
09035cec MH |
401 | } |
402 | ||
403 | /* | |
404 | * Subroutine for vgetline to back up a single character position, | |
405 | * backwards around end of lines (vgoto can't hack columns which are | |
406 | * less than 0 in general). | |
407 | */ | |
408 | back1() | |
409 | { | |
410 | ||
411 | vgoto(destline - 1, WCOLS + destcol - 1); | |
412 | } | |
413 | ||
414 | /* | |
415 | * Get a line into genbuf after gcursor. | |
416 | * Cnt limits the number of input characters | |
417 | * accepted and is used for handling the replace | |
418 | * single character command. Aescaped is the location | |
419 | * where we stick a termination indicator (whether we | |
420 | * ended with an ESCAPE or a newline/return. | |
421 | * | |
422 | * We do erase-kill type processing here and also | |
423 | * are careful about the way we do this so that it is | |
424 | * repeatable. (I.e. so that your kill doesn't happen, | |
425 | * when you repeat an insert if it was escaped with \ the | |
04379bab MH |
426 | * first time you did it. commch is the command character |
427 | * involved, including the prompt for readline. | |
09035cec MH |
428 | */ |
429 | char * | |
04379bab | 430 | vgetline(cnt, gcursor, aescaped, commch) |
09035cec MH |
431 | int cnt; |
432 | register char *gcursor; | |
433 | bool *aescaped; | |
04379bab | 434 | char commch; |
09035cec MH |
435 | { |
436 | register int c, ch; | |
437 | register char *cp; | |
04379bab | 438 | int x, y, iwhite, backsl=0; |
09035cec | 439 | char *iglobp; |
d266c416 | 440 | char cstr[2]; |
09035cec MH |
441 | int (*OO)() = Outchar; |
442 | ||
443 | /* | |
444 | * Clear the output state and counters | |
445 | * for autoindent backwards motion (counts of ^D, etc.) | |
446 | * Remember how much white space at beginning of line so | |
447 | * as not to allow backspace over autoindent. | |
448 | */ | |
449 | *aescaped = 0; | |
450 | ogcursor = gcursor; | |
451 | flusho(); | |
452 | CDCNT = 0; | |
453 | HADUP = 0; | |
454 | HADZERO = 0; | |
455 | gobbled = 0; | |
456 | iwhite = whitecnt(genbuf); | |
457 | iglobp = vglobp; | |
458 | ||
459 | /* | |
460 | * Carefully avoid using vinschar in the echo area. | |
461 | */ | |
462 | if (splitw) | |
463 | Outchar = vputchar; | |
464 | else { | |
465 | Outchar = vinschar; | |
466 | vprepins(); | |
467 | } | |
468 | for (;;) { | |
04379bab | 469 | backsl = 0; |
09035cec MH |
470 | if (gobblebl) |
471 | gobblebl--; | |
472 | if (cnt != 0) { | |
473 | cnt--; | |
474 | if (cnt == 0) | |
475 | goto vadone; | |
476 | } | |
d266c416 MH |
477 | c = getkey(); |
478 | if (c != ATTN) | |
479 | c &= (QUOTE|TRIM); | |
480 | ch = c; | |
481 | maphopcnt = 0; | |
5a6c967e | 482 | if (vglobp == 0 && Peek_key == 0 && commch != 'r') |
887e3e0d | 483 | while ((ch = map(c, immacs)) != c) { |
09035cec | 484 | c = ch; |
887e3e0d MH |
485 | if (!value(REMAP)) |
486 | break; | |
d266c416 MH |
487 | if (++maphopcnt > 256) |
488 | error("Infinite macro loop"); | |
887e3e0d | 489 | } |
09035cec MH |
490 | if (!iglobp) { |
491 | ||
492 | /* | |
493 | * Erase-kill type processing. | |
494 | * Only happens if we were not reading | |
495 | * from untyped input when we started. | |
496 | * Map users erase to ^H, kill to -1 for switch. | |
497 | */ | |
d266c416 | 498 | #ifndef USG3TTY |
09035cec | 499 | if (c == tty.sg_erase) |
65bacefd | 500 | c = CTRL('h'); |
09035cec MH |
501 | else if (c == tty.sg_kill) |
502 | c = -1; | |
d266c416 MH |
503 | #else |
504 | if (c == tty.c_cc[VERASE]) | |
65bacefd | 505 | c = CTRL('h'); |
d266c416 MH |
506 | else if (c == tty.c_cc[VKILL]) |
507 | c = -1; | |
508 | #endif | |
09035cec MH |
509 | switch (c) { |
510 | ||
511 | /* | |
512 | * ^? Interrupt drops you back to visual | |
513 | * command mode with an unread interrupt | |
514 | * still in the input buffer. | |
515 | * | |
516 | * ^\ Quit does the same as interrupt. | |
517 | * If you are a ex command rather than | |
518 | * a vi command this will drop you | |
519 | * back to command mode for sure. | |
520 | */ | |
521 | case ATTN: | |
522 | case QUIT: | |
523 | ungetkey(c); | |
524 | goto vadone; | |
525 | ||
526 | /* | |
527 | * ^H Backs up a character in the input. | |
528 | * | |
529 | * BUG: Can't back around line boundaries. | |
530 | * This is hard because stuff has | |
531 | * already been saved for repeat. | |
532 | */ | |
65bacefd | 533 | case CTRL('h'): |
09035cec MH |
534 | bakchar: |
535 | cp = gcursor - 1; | |
536 | if (cp < ogcursor) { | |
537 | if (splitw) { | |
538 | /* | |
539 | * Backspacing over readecho | |
540 | * prompt. Pretend delete but | |
541 | * don't beep. | |
542 | */ | |
543 | ungetkey(c); | |
544 | goto vadone; | |
545 | } | |
546 | beep(); | |
547 | continue; | |
548 | } | |
549 | goto vbackup; | |
550 | ||
551 | /* | |
552 | * ^W Back up a white/non-white word. | |
553 | */ | |
65bacefd | 554 | case CTRL('w'): |
09035cec MH |
555 | wdkind = 1; |
556 | for (cp = gcursor; cp > ogcursor && isspace(cp[-1]); cp--) | |
557 | continue; | |
558 | for (c = wordch(cp - 1); | |
559 | cp > ogcursor && wordof(c, cp - 1); cp--) | |
560 | continue; | |
561 | goto vbackup; | |
562 | ||
563 | /* | |
564 | * users kill Kill input on this line, back to | |
565 | * the autoindent. | |
566 | */ | |
567 | case -1: | |
568 | cp = ogcursor; | |
569 | vbackup: | |
570 | if (cp == gcursor) { | |
571 | beep(); | |
572 | continue; | |
573 | } | |
574 | endim(); | |
575 | *cp = 0; | |
576 | c = cindent(); | |
577 | vgotoCL(qcolumn(cursor - 1, genbuf)); | |
578 | if (doomed >= 0) | |
579 | doomed += c - cindent(); | |
580 | gcursor = cp; | |
581 | continue; | |
582 | ||
583 | /* | |
584 | * \ Followed by erase or kill | |
585 | * maps to just the erase or kill. | |
586 | */ | |
587 | case '\\': | |
588 | x = destcol, y = destline; | |
5a6c967e | 589 | ex_putchar('\\'); |
09035cec MH |
590 | vcsync(); |
591 | c = getkey(); | |
d266c416 | 592 | #ifndef USG3TTY |
04379bab | 593 | if (c == tty.sg_erase || c == tty.sg_kill) |
d266c416 MH |
594 | #else |
595 | if (c == tty.c_cc[VERASE] | |
04379bab | 596 | || c == tty.c_cc[VKILL]) |
d266c416 | 597 | #endif |
04379bab | 598 | { |
09035cec MH |
599 | vgoto(y, x); |
600 | if (doomed >= 0) | |
601 | doomed++; | |
602 | goto def; | |
603 | } | |
604 | ungetkey(c), c = '\\'; | |
04379bab MH |
605 | backsl = 1; |
606 | break; | |
09035cec MH |
607 | |
608 | /* | |
609 | * ^Q Super quote following character | |
610 | * Only ^@ is verboten (trapped at | |
611 | * a lower level) and \n forces a line | |
612 | * split so doesn't really go in. | |
613 | * | |
614 | * ^V Synonym for ^Q | |
615 | */ | |
65bacefd KB |
616 | case CTRL('q'): |
617 | case CTRL('v'): | |
09035cec | 618 | x = destcol, y = destline; |
5a6c967e | 619 | ex_putchar('^'); |
09035cec MH |
620 | vgoto(y, x); |
621 | c = getkey(); | |
622 | #ifdef TIOCSETC | |
623 | if (c == ATTN) | |
624 | c = nttyc.t_intrc; | |
625 | #endif | |
626 | if (c != NL) { | |
627 | if (doomed >= 0) | |
628 | doomed++; | |
629 | goto def; | |
630 | } | |
631 | break; | |
632 | } | |
633 | } | |
634 | ||
635 | /* | |
636 | * If we get a blank not in the echo area | |
637 | * consider splitting the window in the wrapmargin. | |
638 | */ | |
d266c416 MH |
639 | if (c != NL && !splitw) { |
640 | if (c == ' ' && gobblebl) { | |
09035cec MH |
641 | gobbled = 1; |
642 | continue; | |
643 | } | |
04379bab MH |
644 | if (value(WRAPMARGIN) && |
645 | (outcol >= OCOLUMNS - value(WRAPMARGIN) || | |
646 | backsl && outcol==0) && | |
647 | commch != 'r') { | |
d266c416 MH |
648 | /* |
649 | * At end of word and hit wrapmargin. | |
650 | * Move the word to next line and keep going. | |
651 | */ | |
652 | wdkind = 1; | |
653 | *gcursor++ = c; | |
04379bab MH |
654 | if (backsl) |
655 | *gcursor++ = getkey(); | |
d266c416 MH |
656 | *gcursor = 0; |
657 | /* | |
658 | * Find end of previous word if we are past it. | |
659 | */ | |
660 | for (cp=gcursor; cp>ogcursor && isspace(cp[-1]); cp--) | |
661 | ; | |
04379bab | 662 | if (outcol+(backsl?OCOLUMNS:0) - (gcursor-cp) >= OCOLUMNS - value(WRAPMARGIN)) { |
d266c416 MH |
663 | /* |
664 | * Find beginning of previous word. | |
665 | */ | |
666 | for (; cp>ogcursor && !isspace(cp[-1]); cp--) | |
667 | ; | |
668 | if (cp <= ogcursor) { | |
669 | /* | |
670 | * There is a single word that | |
671 | * is too long to fit. Just | |
672 | * let it pass, but beep for | |
673 | * each new letter to warn | |
674 | * the luser. | |
675 | */ | |
676 | c = *--gcursor; | |
677 | *gcursor = 0; | |
678 | beep(); | |
679 | goto dontbreak; | |
680 | } | |
681 | /* | |
682 | * Save it for next line. | |
683 | */ | |
684 | macpush(cp, 0); | |
685 | cp--; | |
686 | } | |
687 | macpush("\n", 0); | |
688 | /* | |
689 | * Erase white space before the word. | |
690 | */ | |
691 | while (cp > ogcursor && isspace(cp[-1])) | |
692 | cp--; /* skip blank */ | |
693 | gobblebl = 3; | |
694 | goto vbackup; | |
09035cec | 695 | } |
d266c416 MH |
696 | dontbreak:; |
697 | } | |
698 | ||
699 | /* | |
700 | * Word abbreviation mode. | |
701 | */ | |
702 | cstr[0] = c; | |
703 | if (anyabbrs && gcursor > ogcursor && !wordch(cstr) && wordch(gcursor-1)) { | |
5a6c967e CH |
704 | int wdtype, abno; |
705 | ||
706 | cstr[1] = 0; | |
707 | wdkind = 1; | |
708 | cp = gcursor - 1; | |
709 | for (wdtype = wordch(cp - 1); | |
710 | cp > ogcursor && wordof(wdtype, cp - 1); cp--) | |
711 | ; | |
712 | *gcursor = 0; | |
713 | for (abno=0; abbrevs[abno].mapto; abno++) { | |
714 | if (eq(cp, abbrevs[abno].cap)) { | |
715 | macpush(cstr, 0); | |
716 | macpush(abbrevs[abno].mapto, 1); | |
717 | goto vbackup; | |
d266c416 | 718 | } |
5a6c967e | 719 | } |
09035cec | 720 | } |
d266c416 | 721 | |
09035cec MH |
722 | switch (c) { |
723 | ||
724 | /* | |
725 | * ^M Except in repeat maps to \n. | |
726 | */ | |
727 | case CR: | |
728 | if (vglobp) | |
729 | goto def; | |
730 | c = '\n'; | |
731 | /* presto chango ... */ | |
732 | ||
733 | /* | |
734 | * \n Start new line. | |
735 | */ | |
736 | case NL: | |
737 | *aescaped = c; | |
738 | goto vadone; | |
739 | ||
740 | /* | |
741 | * escape End insert unless repeat and more to repeat. | |
742 | */ | |
743 | case ESCAPE: | |
744 | if (lastvgk) | |
745 | goto def; | |
746 | goto vadone; | |
747 | ||
748 | /* | |
749 | * ^D Backtab. | |
750 | * ^T Software forward tab. | |
751 | * | |
752 | * Unless in repeat where this means these | |
753 | * were superquoted in. | |
754 | */ | |
65bacefd KB |
755 | case CTRL('d'): |
756 | case CTRL('t'): | |
09035cec MH |
757 | if (vglobp) |
758 | goto def; | |
759 | /* fall into ... */ | |
760 | ||
761 | /* | |
762 | * ^D|QUOTE Is a backtab (in a repeated command). | |
763 | */ | |
65bacefd | 764 | case CTRL('d') | QUOTE: |
09035cec MH |
765 | *gcursor = 0; |
766 | cp = vpastwh(genbuf); | |
767 | c = whitecnt(genbuf); | |
65bacefd | 768 | if (ch == CTRL('t')) { |
09035cec MH |
769 | /* |
770 | * ^t just generates new indent replacing | |
771 | * current white space rounded up to soft | |
772 | * tab stop increment. | |
773 | */ | |
774 | if (cp != gcursor) | |
775 | /* | |
776 | * BUG: Don't hack ^T except | |
777 | * right after initial | |
778 | * white space. | |
779 | */ | |
780 | continue; | |
781 | cp = genindent(iwhite = backtab(c + value(SHIFTWIDTH) + 1)); | |
782 | ogcursor = cp; | |
783 | goto vbackup; | |
784 | } | |
785 | /* | |
786 | * ^D works only if we are at the (end of) the | |
787 | * generated autoindent. We count the ^D for repeat | |
788 | * purposes. | |
789 | */ | |
790 | if (c == iwhite && c != 0) | |
791 | if (cp == gcursor) { | |
792 | iwhite = backtab(c); | |
793 | CDCNT++; | |
794 | ogcursor = cp = genindent(iwhite); | |
795 | goto vbackup; | |
796 | } else if (&cp[1] == gcursor && | |
797 | (*cp == '^' || *cp == '0')) { | |
798 | /* | |
799 | * ^^D moves to margin, then back | |
800 | * to current indent on next line. | |
801 | * | |
802 | * 0^D moves to margin and then | |
803 | * stays there. | |
804 | */ | |
805 | HADZERO = *cp == '0'; | |
806 | ogcursor = cp = genbuf; | |
807 | HADUP = 1 - HADZERO; | |
808 | CDCNT = 1; | |
809 | endim(); | |
810 | back1(); | |
887e3e0d | 811 | vputchar(' '); |
09035cec MH |
812 | goto vbackup; |
813 | } | |
814 | if (vglobp && vglobp - iglobp >= 2 && | |
815 | (vglobp[-2] == '^' || vglobp[-2] == '0') | |
816 | && gcursor == ogcursor + 1) | |
817 | goto bakchar; | |
818 | continue; | |
819 | ||
820 | default: | |
821 | /* | |
822 | * Possibly discard control inputs. | |
823 | */ | |
824 | if (!vglobp && junk(c)) { | |
825 | beep(); | |
826 | continue; | |
827 | } | |
828 | def: | |
04379bab | 829 | if (!backsl) { |
5a6c967e | 830 | ex_putchar(c); |
0ab2d2a9 | 831 | flush(); |
04379bab | 832 | } |
09035cec MH |
833 | if (gcursor > &genbuf[LBSIZE - 2]) |
834 | error("Line too long"); | |
835 | *gcursor++ = c & TRIM; | |
836 | vcsync(); | |
09035cec MH |
837 | if (value(SHOWMATCH) && !iglobp) |
838 | if (c == ')' || c == '}') | |
839 | lsmatch(gcursor); | |
09035cec MH |
840 | continue; |
841 | } | |
842 | } | |
843 | vadone: | |
844 | *gcursor = 0; | |
d266c416 MH |
845 | if (Outchar != termchar) |
846 | Outchar = OO; | |
09035cec MH |
847 | endim(); |
848 | return (gcursor); | |
849 | } | |
850 | ||
851 | int vgetsplit(); | |
852 | char *vsplitpt; | |
853 | ||
854 | /* | |
855 | * Append the line in buffer at lp | |
856 | * to the buffer after dot. | |
857 | */ | |
858 | vdoappend(lp) | |
859 | char *lp; | |
860 | { | |
861 | register int oing = inglobal; | |
862 | ||
863 | vsplitpt = lp; | |
864 | inglobal = 1; | |
865 | ignore(append(vgetsplit, dot)); | |
866 | inglobal = oing; | |
867 | } | |
868 | ||
869 | /* | |
870 | * Subroutine for vdoappend to pass to append. | |
871 | */ | |
872 | vgetsplit() | |
873 | { | |
874 | ||
875 | if (vsplitpt == 0) | |
876 | return (EOF); | |
877 | strcLIN(vsplitpt); | |
878 | vsplitpt = 0; | |
879 | return (0); | |
880 | } | |
881 | ||
882 | /* | |
883 | * Vmaxrep determines the maximum repetitition factor | |
884 | * allowed that will yield total line length less than | |
44232d5b | 885 | * LBSIZE characters and also does hacks for the R command. |
09035cec MH |
886 | */ |
887 | vmaxrep(ch, cnt) | |
888 | char ch; | |
889 | register int cnt; | |
890 | { | |
891 | register int len, replen; | |
892 | ||
893 | if (cnt > LBSIZE - 2) | |
894 | cnt = LBSIZE - 2; | |
895 | replen = strlen(genbuf); | |
896 | if (ch == 'R') { | |
897 | len = strlen(cursor); | |
898 | if (replen < len) | |
899 | len = replen; | |
900 | CP(cursor, cursor + len); | |
901 | vUD2 += len; | |
902 | } | |
903 | len = strlen(linebuf); | |
904 | if (len + cnt * replen <= LBSIZE - 2) | |
905 | return (cnt); | |
906 | cnt = (LBSIZE - 2 - len) / replen; | |
907 | if (cnt == 0) { | |
908 | vsave(); | |
909 | error("Line too long"); | |
910 | } | |
911 | return (cnt); | |
912 | } |