Commit | Line | Data |
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7c4625ef | 1 | /* Copyright (c) 1980 Regents of the University of California */ |
31cef89c | 2 | static char *sccsid = "@(#)ex_vops.c 6.3 10/23/80"; |
79597adf MH |
3 | #include "ex.h" |
4 | #include "ex_tty.h" | |
5 | #include "ex_vis.h" | |
6 | ||
7 | /* | |
8 | * This file defines the operation sequences which interface the | |
9 | * logical changes to the file buffer with the internal and external | |
10 | * display representations. | |
11 | */ | |
12 | ||
13 | /* | |
14 | * Undo. | |
15 | * | |
16 | * Undo is accomplished in two ways. We often for small changes in the | |
17 | * current line know how (in terms of a change operator) how the change | |
18 | * occurred. Thus on an intelligent terminal we can undo the operation | |
19 | * by another such operation, using insert and delete character | |
20 | * stuff. The pointers vU[AD][12] index the buffer vutmp when this | |
21 | * is possible and provide the necessary information. | |
22 | * | |
23 | * The other case is that the change involved multiple lines or that | |
24 | * we have moved away from the line or forgotten how the change was | |
25 | * accomplished. In this case we do a redisplay and hope that the | |
26 | * low level optimization routines (which don't look for winning | |
27 | * via insert/delete character) will not lose too badly. | |
28 | */ | |
29 | char *vUA1, *vUA2; | |
30 | char *vUD1, *vUD2; | |
31 | ||
32 | vUndo() | |
33 | { | |
34 | ||
35 | /* | |
36 | * Avoid UU which clobbers ability to do u. | |
37 | */ | |
38 | if (vundkind == VCAPU || vUNDdot != dot) { | |
39 | beep(); | |
40 | return; | |
41 | } | |
42 | CP(vutmp, linebuf); | |
43 | vUD1 = linebuf; vUD2 = strend(linebuf); | |
44 | putmk1(dot, vUNDsav); | |
45 | getDOT(); | |
46 | vUA1 = linebuf; vUA2 = strend(linebuf); | |
47 | vundkind = VCAPU; | |
48 | if (state == ONEOPEN || state == HARDOPEN) { | |
49 | vjumpto(dot, vUNDcurs, 0); | |
50 | return; | |
51 | } | |
52 | vdirty(vcline, 1); | |
53 | vsyncCL(); | |
d266c416 | 54 | cursor = linebuf; |
79597adf MH |
55 | vfixcurs(); |
56 | } | |
57 | ||
d266c416 MH |
58 | vundo(show) |
59 | bool show; /* if true update the screen */ | |
79597adf MH |
60 | { |
61 | register int cnt; | |
62 | register line *addr; | |
63 | register char *cp; | |
64 | char temp[LBSIZE]; | |
65 | bool savenote; | |
66 | int (*OO)(); | |
67 | short oldhold = hold; | |
68 | ||
69 | switch (vundkind) { | |
70 | ||
71 | case VMANYINS: | |
72 | wcursor = 0; | |
73 | addr1 = undap1; | |
74 | addr2 = undap2 - 1; | |
75 | vsave(); | |
76 | YANKreg('1'); | |
77 | notecnt = 0; | |
78 | /* fall into ... */ | |
79 | ||
80 | case VMANY: | |
81 | case VMCHNG: | |
82 | vsave(); | |
83 | addr = dot - vcline; | |
84 | notecnt = 1; | |
85 | if (undkind == UNDPUT && undap1 == undap2) { | |
86 | beep(); | |
887e3e0d | 87 | break; |
79597adf MH |
88 | } |
89 | /* | |
90 | * Undo() call below basically replaces undap1 to undap2-1 | |
91 | * with dol through unddol-1. Hack screen image to | |
92 | * reflect this replacement. | |
93 | */ | |
d266c416 MH |
94 | if (show) |
95 | if (undkind == UNDMOVE) | |
96 | vdirty(0, LINES); | |
97 | else | |
98 | vreplace(undap1 - addr, undap2 - undap1, | |
99 | undkind == UNDPUT ? 0 : unddol - dol); | |
79597adf MH |
100 | savenote = notecnt; |
101 | undo(1); | |
d266c416 | 102 | if (show && (vundkind != VMCHNG || addr != dot)) |
79597adf MH |
103 | killU(); |
104 | vundkind = VMANY; | |
105 | cnt = dot - addr; | |
106 | if (cnt < 0 || cnt > vcnt || state != VISUAL) { | |
d266c416 MH |
107 | if (show) |
108 | vjumpto(dot, NOSTR, '.'); | |
887e3e0d | 109 | break; |
79597adf MH |
110 | } |
111 | if (!savenote) | |
112 | notecnt = 0; | |
d266c416 MH |
113 | if (show) { |
114 | vcline = cnt; | |
115 | vrepaint(vmcurs); | |
116 | } | |
79597adf | 117 | vmcurs = 0; |
887e3e0d | 118 | break; |
79597adf MH |
119 | |
120 | case VCHNG: | |
121 | case VCAPU: | |
122 | vundkind = VCHNG; | |
123 | strcpy(temp, vutmp); | |
124 | strcpy(vutmp, linebuf); | |
125 | doomed = column(vUA2 - 1) - column(vUA1 - 1); | |
126 | strcLIN(temp); | |
127 | cp = vUA1; vUA1 = vUD1; vUD1 = cp; | |
128 | cp = vUA2; vUA2 = vUD2; vUD2 = cp; | |
d266c416 MH |
129 | if (!show) |
130 | break; | |
79597adf MH |
131 | cursor = vUD1; |
132 | if (state == HARDOPEN) { | |
133 | doomed = 0; | |
134 | vsave(); | |
135 | vopen(dot, WBOT); | |
136 | vnline(cursor); | |
887e3e0d | 137 | break; |
79597adf MH |
138 | } |
139 | /* | |
140 | * Pseudo insert command. | |
141 | */ | |
142 | vcursat(cursor); | |
143 | OO = Outchar; Outchar = vinschar; hold |= HOLDQIK; | |
144 | vprepins(); | |
145 | temp[vUA2 - linebuf] = 0; | |
146 | for (cp = &temp[vUA1 - linebuf]; *cp;) | |
147 | putchar(*cp++); | |
148 | Outchar = OO; hold = oldhold; | |
149 | endim(); | |
150 | physdc(cindent(), cindent() + doomed); | |
151 | doomed = 0; | |
152 | vdirty(vcline, 1); | |
153 | vsyncCL(); | |
154 | if (cursor > linebuf && cursor >= strend(linebuf)) | |
155 | cursor--; | |
156 | vfixcurs(); | |
887e3e0d | 157 | break; |
79597adf MH |
158 | |
159 | case VNONE: | |
160 | beep(); | |
887e3e0d | 161 | break; |
79597adf MH |
162 | } |
163 | } | |
164 | ||
d266c416 MH |
165 | /* |
166 | * Routine to handle a change inside a macro. | |
167 | * Fromvis is true if we were called from a visual command (as | |
168 | * opposed to an ex command). This has nothing to do with being | |
169 | * in open/visual mode as :s/foo/bar is not fromvis. | |
170 | */ | |
171 | vmacchng(fromvis) | |
172 | bool fromvis; | |
173 | { | |
174 | line *savedot, *savedol; | |
175 | char *savecursor; | |
04379bab | 176 | char savelb[LBSIZE]; |
d266c416 MH |
177 | int nlines, more; |
178 | register line *a1, *a2; | |
179 | char ch; /* DEBUG */ | |
180 | int copyw(), copywR(); | |
181 | ||
182 | if (!inopen) | |
183 | return; | |
184 | if (!vmacp) | |
185 | vch_mac = VC_NOTINMAC; | |
186 | #ifdef TRACE | |
187 | if (trace) | |
188 | fprintf(trace, "vmacchng, vch_mac=%d, linebuf='%s', *dot=%o\n", vch_mac, linebuf, *dot); | |
189 | #endif | |
190 | if (vmacp && fromvis) | |
191 | vsave(); | |
192 | #ifdef TRACE | |
193 | if (trace) | |
194 | fprintf(trace, "after vsave, linebuf='%s', *dot=%o\n", linebuf, *dot); | |
195 | #endif | |
196 | switch(vch_mac) { | |
197 | case VC_NOCHANGE: | |
198 | vch_mac = VC_ONECHANGE; | |
199 | break; | |
200 | case VC_ONECHANGE: | |
201 | /* Save current state somewhere */ | |
202 | #ifdef TRACE | |
203 | vudump("before vmacchng hairy case"); | |
204 | #endif | |
205 | savedot = dot; savedol = dol; savecursor = cursor; | |
04379bab | 206 | CP(savelb, linebuf); |
d266c416 MH |
207 | nlines = dol - zero; |
208 | while ((line *) endcore - truedol < nlines) | |
209 | morelines(); | |
210 | copyw(truedol+1, zero+1, nlines); | |
211 | truedol += nlines; | |
212 | ||
213 | #ifdef TRACE | |
214 | visdump("before vundo"); | |
215 | #endif | |
216 | /* Restore state as it was at beginning of macro */ | |
217 | vundo(0); | |
218 | #ifdef TRACE | |
219 | visdump("after vundo"); | |
220 | vudump("after vundo"); | |
221 | #endif | |
222 | ||
223 | /* Do the saveall we should have done then */ | |
224 | saveall(); | |
225 | #ifdef TRACE | |
226 | vudump("after saveall"); | |
227 | #endif | |
228 | ||
229 | /* Restore current state from where saved */ | |
230 | more = savedol - dol; /* amount we shift everything by */ | |
231 | if (more) | |
232 | (*(more>0 ? copywR : copyw))(savedol+1, dol+1, truedol-dol); | |
04379bab | 233 | unddol += more; truedol += more; undap2 += more; |
d266c416 MH |
234 | |
235 | truedol -= nlines; | |
236 | copyw(zero+1, truedol+1, nlines); | |
237 | dot = savedot; dol = savedol ; cursor = savecursor; | |
04379bab | 238 | CP(linebuf, savelb); |
d266c416 MH |
239 | vch_mac = VC_MANYCHANGE; |
240 | ||
241 | /* Arrange that no further undo saving happens within macro */ | |
242 | otchng = tchng; /* Copied this line blindly - bug? */ | |
243 | inopen = -1; /* no need to save since it had to be 1 or -1 before */ | |
244 | vundkind = VMANY; | |
245 | #ifdef TRACE | |
246 | vudump("after vmacchng"); | |
247 | #endif | |
248 | break; | |
249 | case VC_NOTINMAC: | |
250 | case VC_MANYCHANGE: | |
251 | /* Nothing to do for various reasons. */ | |
252 | break; | |
253 | } | |
254 | } | |
255 | ||
79597adf MH |
256 | /* |
257 | * Initialize undo information before an append. | |
258 | */ | |
259 | vnoapp() | |
260 | { | |
261 | ||
262 | vUD1 = vUD2 = cursor; | |
263 | } | |
264 | ||
265 | /* | |
266 | * All the rest of the motion sequences have one or more | |
267 | * cases to deal with. In the case wdot == 0, operation | |
268 | * is totally within current line, from cursor to wcursor. | |
269 | * If wdot is given, but wcursor is 0, then operation affects | |
270 | * the inclusive line range. The hardest case is when both wdot | |
271 | * and wcursor are given, then operation affects from line dot at | |
272 | * cursor to line wdot at wcursor. | |
273 | */ | |
274 | ||
275 | /* | |
276 | * Move is simple, except for moving onto new lines in hardcopy open mode. | |
277 | */ | |
278 | vmove() | |
279 | { | |
280 | register int cnt; | |
281 | ||
282 | if (wdot) { | |
283 | if (wdot < one || wdot > dol) { | |
284 | beep(); | |
285 | return; | |
286 | } | |
287 | cnt = wdot - dot; | |
288 | wdot = NOLINE; | |
289 | if (cnt) | |
290 | killU(); | |
291 | vupdown(cnt, wcursor); | |
292 | return; | |
293 | } | |
294 | ||
295 | /* | |
296 | * When we move onto a new line, save information for U undo. | |
297 | */ | |
298 | if (vUNDdot != dot) { | |
299 | vUNDsav = *dot; | |
300 | vUNDcurs = wcursor; | |
301 | vUNDdot = dot; | |
302 | } | |
303 | ||
304 | /* | |
305 | * In hardcopy open, type characters to left of cursor | |
306 | * on new line, or back cursor up if its to left of where we are. | |
307 | * In any case if the current line is ``rubbled'' i.e. has trashy | |
308 | * looking overstrikes on it or \'s from deletes, we reprint | |
309 | * so it is more comprehensible (and also because we can't work | |
310 | * if we let it get more out of sync since column() won't work right. | |
311 | */ | |
312 | if (state == HARDOPEN) { | |
313 | register char *cp; | |
314 | if (rubble) { | |
315 | register int c; | |
316 | int oldhold = hold; | |
317 | ||
318 | sethard(); | |
319 | cp = wcursor; | |
320 | c = *cp; | |
321 | *cp = 0; | |
322 | hold |= HOLDDOL; | |
323 | vreopen(WTOP, lineDOT(), vcline); | |
324 | hold = oldhold; | |
325 | *cp = c; | |
326 | } else if (wcursor > cursor) { | |
327 | vfixcurs(); | |
328 | for (cp = cursor; *cp && cp < wcursor;) { | |
329 | register int c = *cp++ & TRIM; | |
330 | ||
331 | putchar(c ? c : ' '); | |
332 | } | |
333 | } | |
334 | } | |
335 | vsetcurs(wcursor); | |
336 | } | |
337 | ||
338 | /* | |
339 | * Delete operator. | |
340 | * | |
341 | * Hard case of deleting a range where both wcursor and wdot | |
342 | * are specified is treated as a special case of change and handled | |
343 | * by vchange (although vchange may pass it back if it degenerates | |
344 | * to a full line range delete.) | |
345 | */ | |
346 | vdelete(c) | |
347 | char c; | |
348 | { | |
349 | register char *cp; | |
350 | register int i; | |
351 | ||
352 | if (wdot) { | |
353 | if (wcursor) { | |
354 | vchange('d'); | |
355 | return; | |
356 | } | |
357 | if ((i = xdw()) < 0) | |
358 | return; | |
359 | if (state != VISUAL) { | |
360 | vgoto(LINE(0), 0); | |
361 | vputchar('@'); | |
362 | } | |
363 | wdot = dot; | |
364 | vremote(i, delete, 0); | |
365 | notenam = "delete"; | |
366 | DEL[0] = 0; | |
367 | killU(); | |
368 | vreplace(vcline, i, 0); | |
369 | if (wdot > dol) | |
370 | vcline--; | |
371 | vrepaint(NOSTR); | |
372 | return; | |
373 | } | |
374 | if (wcursor < linebuf) | |
375 | wcursor = linebuf; | |
376 | if (cursor == wcursor) { | |
377 | beep(); | |
378 | return; | |
379 | } | |
380 | i = vdcMID(); | |
381 | cp = cursor; | |
382 | setDEL(); | |
383 | CP(cp, wcursor); | |
384 | if (cp > linebuf && (cp[0] == 0 || c == '#')) | |
385 | cp--; | |
386 | if (state == HARDOPEN) { | |
387 | bleep(i, cp); | |
388 | cursor = cp; | |
389 | return; | |
390 | } | |
391 | physdc(column(cursor - 1), i); | |
392 | DEPTH(vcline) = 0; | |
393 | vreopen(LINE(vcline), lineDOT(), vcline); | |
394 | vsyncCL(); | |
395 | vsetcurs(cp); | |
396 | } | |
397 | ||
398 | /* | |
399 | * Change operator. | |
400 | * | |
401 | * In a single line we mark the end of the changed area with '$'. | |
402 | * On multiple whole lines, we clear the lines first. | |
403 | * Across lines with both wcursor and wdot given, we delete | |
404 | * and sync then append (but one operation for undo). | |
405 | */ | |
406 | vchange(c) | |
407 | char c; | |
408 | { | |
409 | register char *cp; | |
410 | register int i, ind, cnt; | |
411 | line *addr; | |
412 | ||
413 | if (wdot) { | |
414 | /* | |
415 | * Change/delete of lines or across line boundaries. | |
416 | */ | |
417 | if ((cnt = xdw()) < 0) | |
418 | return; | |
419 | getDOT(); | |
420 | if (wcursor && cnt == 1) { | |
421 | /* | |
422 | * Not really. | |
423 | */ | |
424 | wdot = 0; | |
425 | if (c == 'd') { | |
426 | vdelete(c); | |
427 | return; | |
428 | } | |
429 | goto smallchange; | |
430 | } | |
431 | if (cursor && wcursor) { | |
432 | /* | |
433 | * Across line boundaries, but not | |
434 | * necessarily whole lines. | |
435 | * Construct what will be left. | |
436 | */ | |
437 | *cursor = 0; | |
438 | strcpy(genbuf, linebuf); | |
439 | getline(*wdot); | |
440 | if (strlen(genbuf) + strlen(wcursor) > LBSIZE - 2) { | |
441 | getDOT(); | |
442 | beep(); | |
443 | return; | |
444 | } | |
445 | strcat(genbuf, wcursor); | |
446 | if (c == 'd' && *vpastwh(genbuf) == 0) { | |
447 | /* | |
448 | * Although this is a delete | |
449 | * spanning line boundaries, what | |
450 | * would be left is all white space, | |
451 | * so take it all away. | |
452 | */ | |
453 | wcursor = 0; | |
454 | getDOT(); | |
455 | op = 0; | |
456 | notpart(lastreg); | |
457 | notpart('1'); | |
458 | vdelete(c); | |
459 | return; | |
460 | } | |
461 | ind = -1; | |
462 | } else if (c == 'd' && wcursor == 0) { | |
463 | vdelete(c); | |
464 | return; | |
465 | } else | |
466 | #ifdef LISPCODE | |
467 | /* | |
468 | * We are just substituting text for whole lines, | |
469 | * so determine the first autoindent. | |
470 | */ | |
471 | if (value(LISP) && value(AUTOINDENT)) | |
472 | ind = lindent(dot); | |
473 | else | |
474 | #endif | |
475 | ind = whitecnt(linebuf); | |
476 | i = vcline >= 0 ? LINE(vcline) : WTOP; | |
477 | ||
478 | /* | |
479 | * Delete the lines from the buffer, | |
480 | * and remember how the partial stuff came about in | |
481 | * case we are told to put. | |
482 | */ | |
483 | addr = dot; | |
484 | vremote(cnt, delete, 0); | |
485 | setpk(); | |
486 | notenam = "delete"; | |
487 | if (c != 'd') | |
488 | notenam = "change"; | |
489 | /* | |
490 | * If DEL[0] were nonzero, put would put it back | |
491 | * rather than the deleted lines. | |
492 | */ | |
493 | DEL[0] = 0; | |
494 | if (cnt > 1) | |
495 | killU(); | |
496 | ||
497 | /* | |
498 | * Now hack the screen image coordination. | |
499 | */ | |
500 | vreplace(vcline, cnt, 0); | |
501 | wdot = NOLINE; | |
502 | noteit(0); | |
503 | vcline--; | |
504 | if (addr <= dol) | |
505 | dot--; | |
506 | ||
507 | /* | |
508 | * If this is a across line delete/change, | |
509 | * cursor stays where it is; just splice together the pieces | |
510 | * of the new line. Otherwise generate a autoindent | |
511 | * after a S command. | |
512 | */ | |
513 | if (ind >= 0) { | |
514 | *genindent(ind) = 0; | |
515 | vdoappend(genbuf); | |
516 | } else { | |
517 | vmcurs = cursor; | |
518 | strcLIN(genbuf); | |
519 | vdoappend(linebuf); | |
520 | } | |
521 | ||
522 | /* | |
523 | * Indicate a change on hardcopies by | |
524 | * erasing the current line. | |
525 | */ | |
526 | if (c != 'd' && state != VISUAL && state != HARDOPEN) { | |
527 | int oldhold = hold; | |
528 | ||
529 | hold |= HOLDAT, vclrlin(i, dot), hold = oldhold; | |
530 | } | |
531 | ||
532 | /* | |
533 | * Open the line (logically) on the screen, and | |
534 | * update the screen tail. Unless we are really a delete | |
535 | * go off and gather up inserted characters. | |
536 | */ | |
537 | vcline++; | |
538 | if (vcline < 0) | |
539 | vcline = 0; | |
540 | vopen(dot, i); | |
541 | vsyncCL(); | |
542 | noteit(1); | |
543 | if (c != 'd') { | |
544 | if (ind >= 0) { | |
545 | cursor = linebuf; | |
546 | linebuf[0] = 0; | |
547 | vfixcurs(); | |
548 | } else { | |
549 | ind = 0; | |
550 | vcursat(cursor); | |
551 | } | |
552 | vappend('x', 1, ind); | |
553 | return; | |
554 | } | |
555 | if (*cursor == 0 && cursor > linebuf) | |
556 | cursor--; | |
557 | vrepaint(cursor); | |
558 | return; | |
559 | } | |
560 | ||
561 | smallchange: | |
562 | /* | |
563 | * The rest of this is just low level hacking on changes | |
564 | * of small numbers of characters. | |
565 | */ | |
566 | if (wcursor < linebuf) | |
567 | wcursor = linebuf; | |
568 | if (cursor == wcursor) { | |
569 | beep(); | |
570 | return; | |
571 | } | |
572 | i = vdcMID(); | |
573 | cp = cursor; | |
574 | if (state != HARDOPEN) | |
575 | vfixcurs(); | |
576 | ||
577 | /* | |
578 | * Put out the \\'s indicating changed text in hardcopy, | |
579 | * or mark the end of the change with $ if not hardcopy. | |
580 | */ | |
581 | if (state == HARDOPEN) | |
582 | bleep(i, cp); | |
583 | else { | |
584 | vcursbef(wcursor); | |
585 | putchar('$'); | |
586 | i = cindent(); | |
587 | } | |
588 | ||
589 | /* | |
590 | * Remember the deleted text for possible put, | |
591 | * and then prepare and execute the input portion of the change. | |
592 | */ | |
593 | cursor = cp; | |
594 | setDEL(); | |
595 | CP(cursor, wcursor); | |
596 | if (state != HARDOPEN) { | |
597 | vcursaft(cursor - 1); | |
598 | doomed = i - cindent(); | |
599 | } else { | |
600 | /* | |
601 | sethard(); | |
602 | wcursor = cursor; | |
603 | cursor = linebuf; | |
604 | vgoto(outline, value(NUMBER) << 3); | |
605 | vmove(); | |
606 | */ | |
607 | doomed = 0; | |
608 | } | |
609 | prepapp(); | |
610 | vappend('c', 1, 0); | |
611 | } | |
612 | ||
613 | /* | |
614 | * Open new lines. | |
615 | * | |
616 | * Tricky thing here is slowopen. This causes display updating | |
617 | * to be held off so that 300 baud dumb terminals don't lose badly. | |
618 | * This also suppressed counts, which otherwise say how many blank | |
619 | * space to open up. Counts are also suppressed on intelligent terminals. | |
620 | * Actually counts are obsoleted, since if your terminal is slow | |
621 | * you are better off with slowopen. | |
622 | */ | |
623 | voOpen(c, cnt) | |
624 | char c; | |
625 | register int cnt; | |
626 | { | |
627 | register int ind = 0, i; | |
628 | short oldhold = hold; | |
629 | ||
630 | if (value(SLOWOPEN) || value(REDRAW) && AL && DL) | |
631 | cnt = 1; | |
632 | vsave(); | |
633 | setLAST(); | |
634 | if (value(AUTOINDENT)) | |
635 | ind = whitecnt(linebuf); | |
636 | if (c == 'O') { | |
637 | vcline--; | |
638 | dot--; | |
639 | if (dot > zero) | |
640 | getDOT(); | |
641 | } | |
642 | if (value(AUTOINDENT)) { | |
643 | #ifdef LISPCODE | |
644 | if (value(LISP)) | |
645 | ind = lindent(dot + 1); | |
646 | #endif | |
647 | } | |
648 | killU(); | |
649 | prepapp(); | |
887e3e0d MH |
650 | if (FIXUNDO) |
651 | vundkind = VMANY; | |
79597adf MH |
652 | if (state != VISUAL) |
653 | c = WBOT + 1; | |
654 | else { | |
655 | c = vcline < 0 ? WTOP - cnt : LINE(vcline) + DEPTH(vcline); | |
656 | if (c < ZERO) | |
657 | c = ZERO; | |
658 | i = LINE(vcline + 1) - c; | |
659 | if (i < cnt && c <= WBOT && (!AL || !DL)) | |
660 | vinslin(c, cnt - i, vcline); | |
661 | } | |
662 | *genindent(ind) = 0; | |
663 | vdoappend(genbuf); | |
664 | vcline++; | |
665 | oldhold = hold; | |
666 | hold |= HOLDROL; | |
667 | vopen(dot, c); | |
668 | hold = oldhold; | |
669 | if (value(SLOWOPEN)) | |
670 | /* | |
671 | * Oh, so lazy! | |
672 | */ | |
673 | vscrap(); | |
674 | else | |
675 | vsync1(LINE(vcline)); | |
676 | cursor = linebuf; | |
677 | linebuf[0] = 0; | |
678 | vappend('o', 1, ind); | |
679 | } | |
680 | ||
681 | /* | |
682 | * > < and = shift operators. | |
683 | * | |
684 | * Note that =, which aligns lisp, is just a ragged sort of shift, | |
685 | * since it never distributes text between lines. | |
686 | */ | |
687 | char vshnam[2] = { 'x', 0 }; | |
688 | ||
689 | vshftop() | |
690 | { | |
691 | register line *addr; | |
692 | register int cnt; | |
693 | ||
694 | if ((cnt = xdw()) < 0) | |
695 | return; | |
696 | addr = dot; | |
697 | vremote(cnt, vshift, 0); | |
698 | vshnam[0] = op; | |
699 | notenam = vshnam; | |
700 | dot = addr; | |
701 | vreplace(vcline, cnt, cnt); | |
702 | if (state == HARDOPEN) | |
703 | vcnt = 0; | |
704 | vrepaint(NOSTR); | |
705 | } | |
706 | ||
707 | /* | |
708 | * !. | |
709 | * | |
710 | * Filter portions of the buffer through unix commands. | |
711 | */ | |
712 | vfilter() | |
713 | { | |
714 | register line *addr; | |
715 | register int cnt; | |
716 | char *oglobp, d; | |
717 | ||
718 | if ((cnt = xdw()) < 0) | |
719 | return; | |
720 | if (vglobp) | |
721 | vglobp = uxb; | |
722 | if (readecho('!')) | |
723 | return; | |
724 | oglobp = globp; globp = genbuf + 1; | |
725 | d = peekc; ungetchar(0); | |
726 | CATCH | |
727 | fixech(); | |
728 | unix0(0); | |
729 | ONERR | |
730 | splitw = 0; | |
731 | ungetchar(d); | |
732 | vrepaint(cursor); | |
733 | globp = oglobp; | |
734 | return; | |
735 | ENDCATCH | |
736 | ungetchar(d); globp = oglobp; | |
737 | addr = dot; | |
738 | CATCH | |
739 | vgoto(WECHO, 0); flusho(); | |
740 | vremote(cnt, filter, 2); | |
741 | ONERR | |
742 | vdirty(0, LINES); | |
743 | ENDCATCH | |
744 | if (dot == zero && dol > zero) | |
745 | dot = one; | |
746 | splitw = 0; | |
747 | notenam = ""; | |
887e3e0d MH |
748 | /* |
749 | * BUG: we shouldn't be depending on what undap2 and undap1 are, | |
750 | * since we may be inside a macro. What's really wanted is the | |
751 | * number of lines we read from the filter. However, the mistake | |
752 | * will be an overestimate so it only results in extra work, | |
753 | * it shouldn't cause any real screwups. | |
754 | */ | |
79597adf MH |
755 | vreplace(vcline, cnt, undap2 - undap1); |
756 | dot = addr; | |
757 | if (dot > dol) { | |
758 | dot--; | |
759 | vcline--; | |
760 | } | |
761 | vrepaint(NOSTR); | |
762 | } | |
763 | ||
764 | /* | |
765 | * Xdw exchanges dot and wdot if appropriate and also checks | |
766 | * that wdot is reasonable. Its name comes from | |
767 | * xchange dotand wdot | |
768 | */ | |
769 | xdw() | |
770 | { | |
771 | register char *cp; | |
772 | register int cnt; | |
773 | /* | |
774 | register int notp = 0; | |
775 | */ | |
776 | ||
777 | if (wdot == NOLINE || wdot < one || wdot > dol) { | |
778 | beep(); | |
779 | return (-1); | |
780 | } | |
781 | vsave(); | |
782 | setLAST(); | |
783 | if (dot > wdot) { | |
784 | register line *addr; | |
785 | ||
786 | vcline -= dot - wdot; | |
787 | addr = dot; dot = wdot; wdot = addr; | |
788 | cp = cursor; cursor = wcursor; wcursor = cp; | |
789 | } | |
790 | /* | |
791 | * If a region is specified but wcursor is at the begining | |
792 | * of the last line, then we move it to be the end of the | |
793 | * previous line (actually off the end). | |
794 | */ | |
795 | if (cursor && wcursor == linebuf && wdot > dot) { | |
796 | wdot--; | |
797 | getDOT(); | |
798 | if (vpastwh(linebuf) >= cursor) | |
799 | wcursor = 0; | |
800 | else { | |
801 | getline(*wdot); | |
802 | wcursor = strend(linebuf); | |
803 | getDOT(); | |
804 | } | |
805 | /* | |
806 | * Should prepare in caller for possible dot == wdot. | |
807 | */ | |
808 | } | |
809 | cnt = wdot - dot + 1; | |
810 | if (vreg) { | |
811 | vremote(cnt, YANKreg, vreg); | |
812 | /* | |
813 | if (notp) | |
814 | notpart(vreg); | |
815 | */ | |
816 | } | |
817 | ||
818 | /* | |
819 | * Kill buffer code. If delete operator is c or d, then save | |
820 | * the region in numbered buffers. | |
821 | * | |
822 | * BUG: This may be somewhat inefficient due | |
823 | * to the way named buffer are implemented, | |
824 | * necessitating some optimization. | |
825 | */ | |
826 | vreg = 0; | |
827 | if (any(op, "cd")) { | |
828 | vremote(cnt, YANKreg, '1'); | |
829 | /* | |
830 | if (notp) | |
831 | notpart('1'); | |
832 | */ | |
833 | } | |
834 | return (cnt); | |
835 | } | |
836 | ||
837 | /* | |
838 | * Routine for vremote to call to implement shifts. | |
839 | */ | |
840 | vshift() | |
841 | { | |
842 | ||
843 | shift(op, 1); | |
844 | } | |
845 | ||
846 | /* | |
847 | * Replace a single character with the next input character. | |
848 | * A funny kind of insert. | |
849 | */ | |
850 | vrep(cnt) | |
851 | register int cnt; | |
852 | { | |
853 | register int i, c; | |
854 | ||
855 | if (cnt > strlen(cursor)) { | |
856 | beep(); | |
857 | return; | |
858 | } | |
859 | i = column(cursor + cnt - 1); | |
860 | vcursat(cursor); | |
861 | doomed = i - cindent(); | |
862 | if (!vglobp) { | |
863 | c = getesc(); | |
864 | if (c == 0) { | |
865 | vfixcurs(); | |
866 | return; | |
867 | } | |
868 | ungetkey(c); | |
869 | } | |
870 | CP(vutmp, linebuf); | |
887e3e0d MH |
871 | if (FIXUNDO) |
872 | vundkind = VCHNG; | |
79597adf MH |
873 | wcursor = cursor + cnt; |
874 | vUD1 = cursor; vUD2 = wcursor; | |
875 | CP(cursor, wcursor); | |
876 | prepapp(); | |
877 | vappend('r', cnt, 0); | |
878 | *lastcp++ = INS[0]; | |
879 | setLAST(); | |
880 | } | |
881 | ||
882 | /* | |
883 | * Yank. | |
884 | * | |
885 | * Yanking to string registers occurs for free (essentially) | |
886 | * in the routine xdw(). | |
887 | */ | |
888 | vyankit() | |
889 | { | |
890 | register int cnt; | |
891 | ||
892 | if (wdot) { | |
893 | if ((cnt = xdw()) < 0) | |
894 | return; | |
895 | vremote(cnt, yank, 0); | |
896 | setpk(); | |
897 | notenam = "yank"; | |
887e3e0d MH |
898 | if (FIXUNDO) |
899 | vundkind = VNONE; | |
79597adf MH |
900 | DEL[0] = 0; |
901 | wdot = NOLINE; | |
902 | if (notecnt <= vcnt - vcline && notecnt < value(REPORT)) | |
903 | notecnt = 0; | |
904 | vrepaint(cursor); | |
905 | return; | |
906 | } | |
907 | takeout(DEL); | |
908 | } | |
909 | ||
910 | /* | |
911 | * Set pkill variables so a put can | |
912 | * know how to put back partial text. | |
913 | * This is necessary because undo needs the complete | |
914 | * line images to be saved, while a put wants to trim | |
915 | * the first and last lines. The compromise | |
916 | * is for put to be more clever. | |
917 | */ | |
918 | setpk() | |
919 | { | |
920 | ||
921 | if (wcursor) { | |
922 | pkill[0] = cursor; | |
923 | pkill[1] = wcursor; | |
924 | } | |
925 | } |