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 | |
eb035710 | 8 | static char sccsid[] = "@(#)ex_vops2.c 8.1 (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 | |
5a6c967e | 34 | ex_putchar('\\' | QUOTE); |
09035cec MH |
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 | } | |
5a6c967e | 78 | ex_setBUF(BUF); |
09035cec MH |
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; |
5a6c967e | 123 | #ifdef SIGWINCH |
48be689d | 124 | int oldmask; |
5a6c967e | 125 | #endif |
09035cec MH |
126 | |
127 | /* | |
128 | * Before a move in hardopen when the line is dirty | |
129 | * or we are in the middle of the printed representation, | |
130 | * we retype the line to the left of the cursor so the | |
131 | * insert looks clean. | |
132 | */ | |
133 | if (ch != 'o' && state == HARDOPEN && (rubble || !ateopr())) { | |
134 | rubble = 1; | |
135 | gcursor = cursor; | |
136 | i = *gcursor; | |
137 | *gcursor = ' '; | |
138 | wcursor = gcursor; | |
139 | vmove(); | |
140 | *gcursor = i; | |
141 | } | |
142 | vaifirst = indent == 0; | |
143 | ||
144 | /* | |
145 | * Handle replace character by (eventually) | |
146 | * limiting the number of input characters allowed | |
147 | * in the vgetline routine. | |
148 | */ | |
149 | if (ch == 'r') | |
150 | repcnt = 2; | |
151 | else | |
152 | repcnt = 0; | |
153 | ||
154 | /* | |
155 | * If an autoindent is specified, then | |
156 | * generate a mixture of blanks to tabs to implement | |
157 | * it and place the cursor after the indent. | |
158 | * Text read by the vgetline routine will be placed in genbuf, | |
159 | * so the indent is generated there. | |
160 | */ | |
161 | if (value(AUTOINDENT) && indent != 0) { | |
162 | gcursor = genindent(indent); | |
163 | *gcursor = 0; | |
164 | vgotoCL(qcolumn(cursor - 1, genbuf)); | |
165 | } else { | |
166 | gcursor = genbuf; | |
167 | *gcursor = 0; | |
168 | if (ch == 'o') | |
169 | vfixcurs(); | |
170 | } | |
171 | ||
172 | /* | |
173 | * Prepare for undo. Pointers delimit inserted portion of line. | |
174 | */ | |
175 | vUA1 = vUA2 = cursor; | |
176 | ||
177 | /* | |
178 | * If we are not in a repeated command and a ^@ comes in | |
179 | * then this means the previous inserted text. | |
180 | * If there is none or it was too long to be saved, | |
181 | * then beep() and also arrange to undo any damage done | |
182 | * so far (e.g. if we are a change.) | |
183 | */ | |
184 | if ((vglobp && *vglobp == 0) || peekbr()) { | |
185 | if ((INS[0] & (QUOTE|TRIM)) == OVERBUF) { | |
186 | beep(); | |
187 | if (!splitw) | |
188 | ungetkey('u'); | |
189 | doomed = 0; | |
190 | hold = oldhold; | |
191 | return; | |
192 | } | |
193 | /* | |
194 | * Unread input from INS. | |
195 | * An escape will be generated at end of string. | |
196 | * Hold off n^^2 type update on dumb terminals. | |
197 | */ | |
198 | vglobp = INS; | |
199 | hold |= HOLDQIK; | |
200 | } else if (vglobp == 0) | |
201 | /* | |
202 | * Not a repeated command, get | |
203 | * a new inserted text for repeat. | |
204 | */ | |
205 | INS[0] = 0; | |
206 | ||
207 | /* | |
208 | * For wrapmargin to hack away second space after a '.' | |
209 | * when the first space caused a line break we keep | |
210 | * track that this happened in gobblebl, which says | |
211 | * to gobble up a blank silently. | |
212 | */ | |
213 | gobblebl = 0; | |
214 | ||
5a6c967e | 215 | #ifdef SIGWINCH |
48be689d | 216 | oldmask = sigblock(sigmask(SIGWINCH)); |
5a6c967e | 217 | #endif |
09035cec MH |
218 | /* |
219 | * Text gathering loop. | |
220 | * New text goes into genbuf starting at gcursor. | |
221 | * cursor preserves place in linebuf where text will eventually go. | |
222 | */ | |
223 | if (*cursor == 0 || state == CRTOPEN) | |
224 | hold |= HOLDROL; | |
225 | for (;;) { | |
226 | if (ch == 'r' && repcnt == 0) | |
227 | escape = 0; | |
228 | else { | |
04379bab | 229 | gcursor = vgetline(repcnt, gcursor, &escape, ch); |
09035cec MH |
230 | |
231 | /* | |
232 | * After an append, stick information | |
233 | * about the ^D's and ^^D's and 0^D's in | |
234 | * the repeated text buffer so repeated | |
235 | * inserts of stuff indented with ^D as backtab's | |
236 | * can work. | |
237 | */ | |
238 | if (HADUP) | |
239 | addtext("^"); | |
240 | else if (HADZERO) | |
241 | addtext("0"); | |
242 | while (CDCNT > 0) | |
243 | addtext("\204"), CDCNT--; | |
244 | if (gobbled) | |
245 | addtext(" "); | |
246 | addtext(ogcursor); | |
247 | } | |
248 | repcnt = 0; | |
249 | ||
250 | /* | |
251 | * Smash the generated and preexisting indents together | |
252 | * and generate one cleanly made out of tabs and spaces | |
253 | * if we are using autoindent. | |
254 | */ | |
255 | if (!vaifirst && value(AUTOINDENT)) { | |
256 | i = fixindent(indent); | |
257 | if (!HADUP) | |
258 | indent = i; | |
259 | gcursor = strend(genbuf); | |
260 | } | |
261 | ||
262 | /* | |
263 | * Limit the repetition count based on maximum | |
264 | * possible line length; do output implied | |
265 | * by further count (> 1) and cons up the new line | |
266 | * in linebuf. | |
267 | */ | |
268 | cnt = vmaxrep(ch, cnt); | |
269 | CP(gcursor + 1, cursor); | |
270 | do { | |
271 | CP(cursor, genbuf); | |
272 | if (cnt > 1) { | |
273 | int oldhold = hold; | |
274 | ||
275 | Outchar = vinschar; | |
276 | hold |= HOLDQIK; | |
5a6c967e | 277 | ex_printf("%s", genbuf); |
09035cec MH |
278 | hold = oldhold; |
279 | Outchar = vputchar; | |
280 | } | |
281 | cursor += gcursor - genbuf; | |
282 | } while (--cnt > 0); | |
283 | endim(); | |
284 | vUA2 = cursor; | |
285 | if (escape != '\n') | |
286 | CP(cursor, gcursor + 1); | |
287 | ||
288 | /* | |
289 | * If doomed characters remain, clobber them, | |
290 | * and reopen the line to get the display exact. | |
291 | */ | |
292 | if (state != HARDOPEN) { | |
293 | DEPTH(vcline) = 0; | |
04379bab | 294 | savedoomed = doomed; |
09035cec MH |
295 | if (doomed > 0) { |
296 | register int cind = cindent(); | |
297 | ||
298 | physdc(cind, cind + doomed); | |
299 | doomed = 0; | |
300 | } | |
301 | i = vreopen(LINE(vcline), lineDOT(), vcline); | |
f0f2d980 MH |
302 | #ifdef TRACE |
303 | if (trace) | |
304 | fprintf(trace, "restoring doomed from %d to %d\n", doomed, savedoomed); | |
305 | #endif | |
306 | if (ch == 'R') | |
307 | doomed = savedoomed; | |
09035cec MH |
308 | } |
309 | ||
310 | /* | |
311 | * All done unless we are continuing on to another line. | |
312 | */ | |
313 | if (escape != '\n') | |
314 | break; | |
315 | ||
316 | /* | |
317 | * Set up for the new line. | |
318 | * First save the current line, then construct a new | |
319 | * first image for the continuation line consisting | |
320 | * of any new autoindent plus the pushed ahead text. | |
321 | */ | |
322 | killU(); | |
323 | addtext(gobblebl ? " " : "\n"); | |
324 | vsave(); | |
325 | cnt = 1; | |
326 | if (value(AUTOINDENT)) { | |
327 | #ifdef LISPCODE | |
328 | if (value(LISP)) | |
329 | indent = lindent(dot + 1); | |
330 | else | |
331 | #endif | |
332 | if (!HADUP && vaifirst) | |
333 | indent = whitecnt(linebuf); | |
334 | vaifirst = 0; | |
335 | strcLIN(vpastwh(gcursor + 1)); | |
336 | gcursor = genindent(indent); | |
337 | *gcursor = 0; | |
338 | if (gcursor + strlen(linebuf) > &genbuf[LBSIZE - 2]) | |
339 | gcursor = genbuf; | |
340 | CP(gcursor, linebuf); | |
341 | } else { | |
342 | CP(genbuf, gcursor + 1); | |
343 | gcursor = genbuf; | |
344 | } | |
345 | ||
346 | /* | |
347 | * If we started out as a single line operation and are now | |
348 | * turning into a multi-line change, then we had better yank | |
349 | * out dot before it changes so that undo will work | |
350 | * correctly later. | |
351 | */ | |
887e3e0d | 352 | if (FIXUNDO && vundkind == VCHNG) { |
09035cec MH |
353 | vremote(1, yank, 0); |
354 | undap1--; | |
355 | } | |
356 | ||
357 | /* | |
358 | * Now do the append of the new line in the buffer, | |
359 | * and update the display. If slowopen | |
360 | * we don't do very much. | |
361 | */ | |
362 | vdoappend(genbuf); | |
363 | vundkind = VMANYINS; | |
364 | vcline++; | |
365 | if (state != VISUAL) | |
366 | vshow(dot, NOLINE); | |
367 | else { | |
368 | i += LINE(vcline - 1); | |
369 | vopen(dot, i); | |
370 | if (value(SLOWOPEN)) | |
371 | vscrap(); | |
372 | else | |
373 | vsync1(LINE(vcline)); | |
374 | } | |
375 | strcLIN(gcursor); | |
376 | *gcursor = 0; | |
377 | cursor = linebuf; | |
378 | vgotoCL(qcolumn(cursor - 1, genbuf)); | |
379 | } | |
380 | ||
381 | /* | |
382 | * All done with insertion, position the cursor | |
383 | * and sync the screen. | |
384 | */ | |
385 | hold = oldhold; | |
386 | if (cursor > linebuf) | |
387 | cursor--; | |
388 | if (state != HARDOPEN) | |
389 | vsyncCL(); | |
390 | else if (cursor > linebuf) | |
391 | back1(); | |
392 | doomed = 0; | |
393 | wcursor = cursor; | |
394 | vmove(); | |
5a6c967e | 395 | #ifdef SIGWINCH |
48be689d | 396 | (void)sigsetmask(oldmask); |
5a6c967e | 397 | #endif |
09035cec MH |
398 | } |
399 | ||
400 | /* | |
401 | * Subroutine for vgetline to back up a single character position, | |
402 | * backwards around end of lines (vgoto can't hack columns which are | |
403 | * less than 0 in general). | |
404 | */ | |
405 | back1() | |
406 | { | |
407 | ||
408 | vgoto(destline - 1, WCOLS + destcol - 1); | |
409 | } | |
410 | ||
411 | /* | |
412 | * Get a line into genbuf after gcursor. | |
413 | * Cnt limits the number of input characters | |
414 | * accepted and is used for handling the replace | |
415 | * single character command. Aescaped is the location | |
416 | * where we stick a termination indicator (whether we | |
417 | * ended with an ESCAPE or a newline/return. | |
418 | * | |
419 | * We do erase-kill type processing here and also | |
420 | * are careful about the way we do this so that it is | |
421 | * repeatable. (I.e. so that your kill doesn't happen, | |
422 | * when you repeat an insert if it was escaped with \ the | |
04379bab MH |
423 | * first time you did it. commch is the command character |
424 | * involved, including the prompt for readline. | |
09035cec MH |
425 | */ |
426 | char * | |
04379bab | 427 | vgetline(cnt, gcursor, aescaped, commch) |
09035cec MH |
428 | int cnt; |
429 | register char *gcursor; | |
430 | bool *aescaped; | |
04379bab | 431 | char commch; |
09035cec MH |
432 | { |
433 | register int c, ch; | |
434 | register char *cp; | |
04379bab | 435 | int x, y, iwhite, backsl=0; |
09035cec | 436 | char *iglobp; |
d266c416 | 437 | char cstr[2]; |
09035cec MH |
438 | int (*OO)() = Outchar; |
439 | ||
440 | /* | |
441 | * Clear the output state and counters | |
442 | * for autoindent backwards motion (counts of ^D, etc.) | |
443 | * Remember how much white space at beginning of line so | |
444 | * as not to allow backspace over autoindent. | |
445 | */ | |
446 | *aescaped = 0; | |
447 | ogcursor = gcursor; | |
448 | flusho(); | |
449 | CDCNT = 0; | |
450 | HADUP = 0; | |
451 | HADZERO = 0; | |
452 | gobbled = 0; | |
453 | iwhite = whitecnt(genbuf); | |
454 | iglobp = vglobp; | |
455 | ||
456 | /* | |
457 | * Carefully avoid using vinschar in the echo area. | |
458 | */ | |
459 | if (splitw) | |
460 | Outchar = vputchar; | |
461 | else { | |
462 | Outchar = vinschar; | |
463 | vprepins(); | |
464 | } | |
465 | for (;;) { | |
04379bab | 466 | backsl = 0; |
09035cec MH |
467 | if (gobblebl) |
468 | gobblebl--; | |
469 | if (cnt != 0) { | |
470 | cnt--; | |
471 | if (cnt == 0) | |
472 | goto vadone; | |
473 | } | |
d266c416 MH |
474 | c = getkey(); |
475 | if (c != ATTN) | |
476 | c &= (QUOTE|TRIM); | |
477 | ch = c; | |
478 | maphopcnt = 0; | |
5a6c967e | 479 | if (vglobp == 0 && Peek_key == 0 && commch != 'r') |
887e3e0d | 480 | while ((ch = map(c, immacs)) != c) { |
09035cec | 481 | c = ch; |
887e3e0d MH |
482 | if (!value(REMAP)) |
483 | break; | |
d266c416 MH |
484 | if (++maphopcnt > 256) |
485 | error("Infinite macro loop"); | |
887e3e0d | 486 | } |
09035cec MH |
487 | if (!iglobp) { |
488 | ||
489 | /* | |
490 | * Erase-kill type processing. | |
491 | * Only happens if we were not reading | |
492 | * from untyped input when we started. | |
493 | * Map users erase to ^H, kill to -1 for switch. | |
494 | */ | |
d266c416 | 495 | #ifndef USG3TTY |
09035cec | 496 | if (c == tty.sg_erase) |
65bacefd | 497 | c = CTRL('h'); |
09035cec MH |
498 | else if (c == tty.sg_kill) |
499 | c = -1; | |
d266c416 MH |
500 | #else |
501 | if (c == tty.c_cc[VERASE]) | |
65bacefd | 502 | c = CTRL('h'); |
d266c416 MH |
503 | else if (c == tty.c_cc[VKILL]) |
504 | c = -1; | |
505 | #endif | |
09035cec MH |
506 | switch (c) { |
507 | ||
508 | /* | |
509 | * ^? Interrupt drops you back to visual | |
510 | * command mode with an unread interrupt | |
511 | * still in the input buffer. | |
512 | * | |
513 | * ^\ Quit does the same as interrupt. | |
514 | * If you are a ex command rather than | |
515 | * a vi command this will drop you | |
516 | * back to command mode for sure. | |
517 | */ | |
518 | case ATTN: | |
519 | case QUIT: | |
520 | ungetkey(c); | |
521 | goto vadone; | |
522 | ||
523 | /* | |
524 | * ^H Backs up a character in the input. | |
525 | * | |
526 | * BUG: Can't back around line boundaries. | |
527 | * This is hard because stuff has | |
528 | * already been saved for repeat. | |
529 | */ | |
65bacefd | 530 | case CTRL('h'): |
09035cec MH |
531 | bakchar: |
532 | cp = gcursor - 1; | |
533 | if (cp < ogcursor) { | |
534 | if (splitw) { | |
535 | /* | |
536 | * Backspacing over readecho | |
537 | * prompt. Pretend delete but | |
538 | * don't beep. | |
539 | */ | |
540 | ungetkey(c); | |
541 | goto vadone; | |
542 | } | |
543 | beep(); | |
544 | continue; | |
545 | } | |
546 | goto vbackup; | |
547 | ||
548 | /* | |
549 | * ^W Back up a white/non-white word. | |
550 | */ | |
65bacefd | 551 | case CTRL('w'): |
09035cec MH |
552 | wdkind = 1; |
553 | for (cp = gcursor; cp > ogcursor && isspace(cp[-1]); cp--) | |
554 | continue; | |
555 | for (c = wordch(cp - 1); | |
556 | cp > ogcursor && wordof(c, cp - 1); cp--) | |
557 | continue; | |
558 | goto vbackup; | |
559 | ||
560 | /* | |
561 | * users kill Kill input on this line, back to | |
562 | * the autoindent. | |
563 | */ | |
564 | case -1: | |
565 | cp = ogcursor; | |
566 | vbackup: | |
567 | if (cp == gcursor) { | |
568 | beep(); | |
569 | continue; | |
570 | } | |
571 | endim(); | |
572 | *cp = 0; | |
573 | c = cindent(); | |
574 | vgotoCL(qcolumn(cursor - 1, genbuf)); | |
575 | if (doomed >= 0) | |
576 | doomed += c - cindent(); | |
577 | gcursor = cp; | |
578 | continue; | |
579 | ||
580 | /* | |
581 | * \ Followed by erase or kill | |
582 | * maps to just the erase or kill. | |
583 | */ | |
584 | case '\\': | |
585 | x = destcol, y = destline; | |
5a6c967e | 586 | ex_putchar('\\'); |
09035cec MH |
587 | vcsync(); |
588 | c = getkey(); | |
d266c416 | 589 | #ifndef USG3TTY |
04379bab | 590 | if (c == tty.sg_erase || c == tty.sg_kill) |
d266c416 MH |
591 | #else |
592 | if (c == tty.c_cc[VERASE] | |
04379bab | 593 | || c == tty.c_cc[VKILL]) |
d266c416 | 594 | #endif |
04379bab | 595 | { |
09035cec MH |
596 | vgoto(y, x); |
597 | if (doomed >= 0) | |
598 | doomed++; | |
599 | goto def; | |
600 | } | |
601 | ungetkey(c), c = '\\'; | |
04379bab MH |
602 | backsl = 1; |
603 | break; | |
09035cec MH |
604 | |
605 | /* | |
606 | * ^Q Super quote following character | |
607 | * Only ^@ is verboten (trapped at | |
608 | * a lower level) and \n forces a line | |
609 | * split so doesn't really go in. | |
610 | * | |
611 | * ^V Synonym for ^Q | |
612 | */ | |
65bacefd KB |
613 | case CTRL('q'): |
614 | case CTRL('v'): | |
09035cec | 615 | x = destcol, y = destline; |
5a6c967e | 616 | ex_putchar('^'); |
09035cec MH |
617 | vgoto(y, x); |
618 | c = getkey(); | |
619 | #ifdef TIOCSETC | |
620 | if (c == ATTN) | |
621 | c = nttyc.t_intrc; | |
622 | #endif | |
623 | if (c != NL) { | |
624 | if (doomed >= 0) | |
625 | doomed++; | |
626 | goto def; | |
627 | } | |
628 | break; | |
629 | } | |
630 | } | |
631 | ||
632 | /* | |
633 | * If we get a blank not in the echo area | |
634 | * consider splitting the window in the wrapmargin. | |
635 | */ | |
d266c416 MH |
636 | if (c != NL && !splitw) { |
637 | if (c == ' ' && gobblebl) { | |
09035cec MH |
638 | gobbled = 1; |
639 | continue; | |
640 | } | |
04379bab MH |
641 | if (value(WRAPMARGIN) && |
642 | (outcol >= OCOLUMNS - value(WRAPMARGIN) || | |
643 | backsl && outcol==0) && | |
644 | commch != 'r') { | |
d266c416 MH |
645 | /* |
646 | * At end of word and hit wrapmargin. | |
647 | * Move the word to next line and keep going. | |
648 | */ | |
649 | wdkind = 1; | |
650 | *gcursor++ = c; | |
04379bab MH |
651 | if (backsl) |
652 | *gcursor++ = getkey(); | |
d266c416 MH |
653 | *gcursor = 0; |
654 | /* | |
655 | * Find end of previous word if we are past it. | |
656 | */ | |
657 | for (cp=gcursor; cp>ogcursor && isspace(cp[-1]); cp--) | |
658 | ; | |
04379bab | 659 | if (outcol+(backsl?OCOLUMNS:0) - (gcursor-cp) >= OCOLUMNS - value(WRAPMARGIN)) { |
d266c416 MH |
660 | /* |
661 | * Find beginning of previous word. | |
662 | */ | |
663 | for (; cp>ogcursor && !isspace(cp[-1]); cp--) | |
664 | ; | |
665 | if (cp <= ogcursor) { | |
666 | /* | |
667 | * There is a single word that | |
668 | * is too long to fit. Just | |
669 | * let it pass, but beep for | |
670 | * each new letter to warn | |
671 | * the luser. | |
672 | */ | |
673 | c = *--gcursor; | |
674 | *gcursor = 0; | |
675 | beep(); | |
676 | goto dontbreak; | |
677 | } | |
678 | /* | |
679 | * Save it for next line. | |
680 | */ | |
681 | macpush(cp, 0); | |
682 | cp--; | |
683 | } | |
684 | macpush("\n", 0); | |
685 | /* | |
686 | * Erase white space before the word. | |
687 | */ | |
688 | while (cp > ogcursor && isspace(cp[-1])) | |
689 | cp--; /* skip blank */ | |
690 | gobblebl = 3; | |
691 | goto vbackup; | |
09035cec | 692 | } |
d266c416 MH |
693 | dontbreak:; |
694 | } | |
695 | ||
696 | /* | |
697 | * Word abbreviation mode. | |
698 | */ | |
699 | cstr[0] = c; | |
700 | if (anyabbrs && gcursor > ogcursor && !wordch(cstr) && wordch(gcursor-1)) { | |
5a6c967e CH |
701 | int wdtype, abno; |
702 | ||
703 | cstr[1] = 0; | |
704 | wdkind = 1; | |
705 | cp = gcursor - 1; | |
706 | for (wdtype = wordch(cp - 1); | |
707 | cp > ogcursor && wordof(wdtype, cp - 1); cp--) | |
708 | ; | |
709 | *gcursor = 0; | |
710 | for (abno=0; abbrevs[abno].mapto; abno++) { | |
711 | if (eq(cp, abbrevs[abno].cap)) { | |
712 | macpush(cstr, 0); | |
713 | macpush(abbrevs[abno].mapto, 1); | |
714 | goto vbackup; | |
d266c416 | 715 | } |
5a6c967e | 716 | } |
09035cec | 717 | } |
d266c416 | 718 | |
09035cec MH |
719 | switch (c) { |
720 | ||
721 | /* | |
722 | * ^M Except in repeat maps to \n. | |
723 | */ | |
724 | case CR: | |
725 | if (vglobp) | |
726 | goto def; | |
727 | c = '\n'; | |
728 | /* presto chango ... */ | |
729 | ||
730 | /* | |
731 | * \n Start new line. | |
732 | */ | |
733 | case NL: | |
734 | *aescaped = c; | |
735 | goto vadone; | |
736 | ||
737 | /* | |
738 | * escape End insert unless repeat and more to repeat. | |
739 | */ | |
740 | case ESCAPE: | |
741 | if (lastvgk) | |
742 | goto def; | |
743 | goto vadone; | |
744 | ||
745 | /* | |
746 | * ^D Backtab. | |
747 | * ^T Software forward tab. | |
748 | * | |
749 | * Unless in repeat where this means these | |
750 | * were superquoted in. | |
751 | */ | |
65bacefd KB |
752 | case CTRL('d'): |
753 | case CTRL('t'): | |
09035cec MH |
754 | if (vglobp) |
755 | goto def; | |
756 | /* fall into ... */ | |
757 | ||
758 | /* | |
759 | * ^D|QUOTE Is a backtab (in a repeated command). | |
760 | */ | |
65bacefd | 761 | case CTRL('d') | QUOTE: |
09035cec MH |
762 | *gcursor = 0; |
763 | cp = vpastwh(genbuf); | |
764 | c = whitecnt(genbuf); | |
65bacefd | 765 | if (ch == CTRL('t')) { |
09035cec MH |
766 | /* |
767 | * ^t just generates new indent replacing | |
768 | * current white space rounded up to soft | |
769 | * tab stop increment. | |
770 | */ | |
771 | if (cp != gcursor) | |
772 | /* | |
773 | * BUG: Don't hack ^T except | |
774 | * right after initial | |
775 | * white space. | |
776 | */ | |
777 | continue; | |
778 | cp = genindent(iwhite = backtab(c + value(SHIFTWIDTH) + 1)); | |
779 | ogcursor = cp; | |
780 | goto vbackup; | |
781 | } | |
782 | /* | |
783 | * ^D works only if we are at the (end of) the | |
784 | * generated autoindent. We count the ^D for repeat | |
785 | * purposes. | |
786 | */ | |
787 | if (c == iwhite && c != 0) | |
788 | if (cp == gcursor) { | |
789 | iwhite = backtab(c); | |
790 | CDCNT++; | |
791 | ogcursor = cp = genindent(iwhite); | |
792 | goto vbackup; | |
793 | } else if (&cp[1] == gcursor && | |
794 | (*cp == '^' || *cp == '0')) { | |
795 | /* | |
796 | * ^^D moves to margin, then back | |
797 | * to current indent on next line. | |
798 | * | |
799 | * 0^D moves to margin and then | |
800 | * stays there. | |
801 | */ | |
802 | HADZERO = *cp == '0'; | |
803 | ogcursor = cp = genbuf; | |
804 | HADUP = 1 - HADZERO; | |
805 | CDCNT = 1; | |
806 | endim(); | |
807 | back1(); | |
887e3e0d | 808 | vputchar(' '); |
09035cec MH |
809 | goto vbackup; |
810 | } | |
811 | if (vglobp && vglobp - iglobp >= 2 && | |
812 | (vglobp[-2] == '^' || vglobp[-2] == '0') | |
813 | && gcursor == ogcursor + 1) | |
814 | goto bakchar; | |
815 | continue; | |
816 | ||
817 | default: | |
818 | /* | |
819 | * Possibly discard control inputs. | |
820 | */ | |
821 | if (!vglobp && junk(c)) { | |
822 | beep(); | |
823 | continue; | |
824 | } | |
825 | def: | |
04379bab | 826 | if (!backsl) { |
5a6c967e | 827 | ex_putchar(c); |
0ab2d2a9 | 828 | flush(); |
04379bab | 829 | } |
09035cec MH |
830 | if (gcursor > &genbuf[LBSIZE - 2]) |
831 | error("Line too long"); | |
832 | *gcursor++ = c & TRIM; | |
833 | vcsync(); | |
09035cec MH |
834 | if (value(SHOWMATCH) && !iglobp) |
835 | if (c == ')' || c == '}') | |
836 | lsmatch(gcursor); | |
09035cec MH |
837 | continue; |
838 | } | |
839 | } | |
840 | vadone: | |
841 | *gcursor = 0; | |
d266c416 MH |
842 | if (Outchar != termchar) |
843 | Outchar = OO; | |
09035cec MH |
844 | endim(); |
845 | return (gcursor); | |
846 | } | |
847 | ||
848 | int vgetsplit(); | |
849 | char *vsplitpt; | |
850 | ||
851 | /* | |
852 | * Append the line in buffer at lp | |
853 | * to the buffer after dot. | |
854 | */ | |
855 | vdoappend(lp) | |
856 | char *lp; | |
857 | { | |
858 | register int oing = inglobal; | |
859 | ||
860 | vsplitpt = lp; | |
861 | inglobal = 1; | |
862 | ignore(append(vgetsplit, dot)); | |
863 | inglobal = oing; | |
864 | } | |
865 | ||
866 | /* | |
867 | * Subroutine for vdoappend to pass to append. | |
868 | */ | |
869 | vgetsplit() | |
870 | { | |
871 | ||
872 | if (vsplitpt == 0) | |
873 | return (EOF); | |
874 | strcLIN(vsplitpt); | |
875 | vsplitpt = 0; | |
876 | return (0); | |
877 | } | |
878 | ||
879 | /* | |
880 | * Vmaxrep determines the maximum repetitition factor | |
881 | * allowed that will yield total line length less than | |
44232d5b | 882 | * LBSIZE characters and also does hacks for the R command. |
09035cec MH |
883 | */ |
884 | vmaxrep(ch, cnt) | |
885 | char ch; | |
886 | register int cnt; | |
887 | { | |
888 | register int len, replen; | |
889 | ||
890 | if (cnt > LBSIZE - 2) | |
891 | cnt = LBSIZE - 2; | |
892 | replen = strlen(genbuf); | |
893 | if (ch == 'R') { | |
894 | len = strlen(cursor); | |
895 | if (replen < len) | |
896 | len = replen; | |
897 | CP(cursor, cursor + len); | |
898 | vUD2 += len; | |
899 | } | |
900 | len = strlen(linebuf); | |
901 | if (len + cnt * replen <= LBSIZE - 2) | |
902 | return (cnt); | |
903 | cnt = (LBSIZE - 2 - len) / replen; | |
904 | if (cnt == 0) { | |
905 | vsave(); | |
906 | error("Line too long"); | |
907 | } | |
908 | return (cnt); | |
909 | } |