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No CF calls between fork() and exec()
[MacVim.git] / src / ops.c
blob1d5d3bfa7e81ae8142f6fe7a73bf7ab65f5d15ed
1 /* vi:set ts=8 sts=4 sw=4:
2 *
3 * VIM - Vi IMproved by Bram Moolenaar
4 *
5 * Do ":help uganda" in Vim to read copying and usage conditions.
6 * Do ":help credits" in Vim to see a list of people who contributed.
7 * See README.txt for an overview of the Vim source code.
8 */
9
10 /*
11 * ops.c: implementation of various operators: op_shift, op_delete, op_tilde,
12 * op_change, op_yank, do_put, do_join
13 */
14
15 #include "vim.h"
16
17 /*
18 * Number of registers.
19 * 0 = unnamed register, for normal yanks and puts
20 * 1..9 = registers '1' to '9', for deletes
21 * 10..35 = registers 'a' to 'z'
22 * 36 = delete register '-'
23 * 37 = Selection register '*'. Only if FEAT_CLIPBOARD defined
24 * 38 = Clipboard register '+'. Only if FEAT_CLIPBOARD and FEAT_X11 defined
25 */
26 /*
27 * Symbolic names for some registers.
28 */
29 #define DELETION_REGISTER 36
30 #ifdef FEAT_CLIPBOARD
31 # define STAR_REGISTER 37
32 # ifdef FEAT_X11
33 # define PLUS_REGISTER 38
34 # else
35 # define PLUS_REGISTER STAR_REGISTER /* there is only one */
36 # endif
37 #endif
38 #ifdef FEAT_DND
39 # define TILDE_REGISTER (PLUS_REGISTER + 1)
40 #endif
41
42 #ifdef FEAT_CLIPBOARD
43 # ifdef FEAT_DND
44 # define NUM_REGISTERS (TILDE_REGISTER + 1)
45 # else
46 # define NUM_REGISTERS (PLUS_REGISTER + 1)
47 # endif
48 #else
49 # define NUM_REGISTERS 37
50 #endif
51
52 /*
53 * Each yank register is an array of pointers to lines.
54 */
55 static struct yankreg
56 {
57 char_u **y_array; /* pointer to array of line pointers */
58 linenr_T y_size; /* number of lines in y_array */
59 char_u y_type; /* MLINE, MCHAR or MBLOCK */
60 #ifdef FEAT_VISUAL
61 colnr_T y_width; /* only set if y_type == MBLOCK */
62 #endif
63 } y_regs[NUM_REGISTERS];
64
65 static struct yankreg *y_current; /* ptr to current yankreg */
66 static int y_append; /* TRUE when appending */
67 static struct yankreg *y_previous = NULL; /* ptr to last written yankreg */
68
69 /*
70 * structure used by block_prep, op_delete and op_yank for blockwise operators
71 * also op_change, op_shift, op_insert, op_replace - AKelly
72 */
73 struct block_def
74 {
75 int startspaces; /* 'extra' cols of first char */
76 int endspaces; /* 'extra' cols of first char */
77 int textlen; /* chars in block */
78 char_u *textstart; /* pointer to 1st char in block */
79 colnr_T textcol; /* cols of chars (at least part.) in block */
80 colnr_T start_vcol; /* start col of 1st char wholly inside block */
81 colnr_T end_vcol; /* start col of 1st char wholly after block */
82 #ifdef FEAT_VISUALEXTRA
83 int is_short; /* TRUE if line is too short to fit in block */
84 int is_MAX; /* TRUE if curswant==MAXCOL when starting */
85 int is_oneChar; /* TRUE if block within one character */
86 int pre_whitesp; /* screen cols of ws before block */
87 int pre_whitesp_c; /* chars of ws before block */
88 colnr_T end_char_vcols; /* number of vcols of post-block char */
89 #endif
90 colnr_T start_char_vcols; /* number of vcols of pre-block char */
91 };
92
93 #ifdef FEAT_VISUALEXTRA
94 static void shift_block __ARGS((oparg_T *oap, int amount));
95 static void block_insert __ARGS((oparg_T *oap, char_u *s, int b_insert, struct block_def*bdp));
96 #endif
97 static int stuff_yank __ARGS((int, char_u *));
98 static void put_reedit_in_typebuf __ARGS((int silent));
99 static int put_in_typebuf __ARGS((char_u *s, int esc, int colon,
100 int silent));
101 static void stuffescaped __ARGS((char_u *arg, int literally));
102 #ifdef FEAT_MBYTE
103 static void mb_adjust_opend __ARGS((oparg_T *oap));
104 #endif
105 static void free_yank __ARGS((long));
106 static void free_yank_all __ARGS((void));
107 static int yank_copy_line __ARGS((struct block_def *bd, long y_idx));
108 #ifdef FEAT_CLIPBOARD
109 static void copy_yank_reg __ARGS((struct yankreg *reg));
110 # if defined(FEAT_VISUAL) || defined(FEAT_EVAL)
111 static void may_set_selection __ARGS((void));
112 # endif
113 #endif
114 static void dis_msg __ARGS((char_u *p, int skip_esc));
115 #ifdef FEAT_VISUAL
116 static void block_prep __ARGS((oparg_T *oap, struct block_def *, linenr_T, int));
117 #endif
118 #if defined(FEAT_CLIPBOARD) || defined(FEAT_EVAL)
119 static void str_to_reg __ARGS((struct yankreg *y_ptr, int type, char_u *str, long len, long blocklen));
120 #endif
121 static int ends_in_white __ARGS((linenr_T lnum));
122 #ifdef FEAT_COMMENTS
123 static int same_leader __ARGS((linenr_T lnum, int, char_u *, int, char_u *));
124 static int fmt_check_par __ARGS((linenr_T, int *, char_u **, int do_comments));
125 #else
126 static int fmt_check_par __ARGS((linenr_T));
127 #endif
128
129 /*
130 * The names of operators.
131 * IMPORTANT: Index must correspond with defines in vim.h!!!
132 * The third field indicates whether the operator always works on lines.
133 */
134 static char opchars[][3] =
135 {
136 {NUL, NUL, FALSE}, /* OP_NOP */
137 {'d', NUL, FALSE}, /* OP_DELETE */
138 {'y', NUL, FALSE}, /* OP_YANK */
139 {'c', NUL, FALSE}, /* OP_CHANGE */
140 {'<', NUL, TRUE}, /* OP_LSHIFT */
141 {'>', NUL, TRUE}, /* OP_RSHIFT */
142 {'!', NUL, TRUE}, /* OP_FILTER */
143 {'g', '~', FALSE}, /* OP_TILDE */
144 {'=', NUL, TRUE}, /* OP_INDENT */
145 {'g', 'q', TRUE}, /* OP_FORMAT */
146 {':', NUL, TRUE}, /* OP_COLON */
147 {'g', 'U', FALSE}, /* OP_UPPER */
148 {'g', 'u', FALSE}, /* OP_LOWER */
149 {'J', NUL, TRUE}, /* DO_JOIN */
150 {'g', 'J', TRUE}, /* DO_JOIN_NS */
151 {'g', '?', FALSE}, /* OP_ROT13 */
152 {'r', NUL, FALSE}, /* OP_REPLACE */
153 {'I', NUL, FALSE}, /* OP_INSERT */
154 {'A', NUL, FALSE}, /* OP_APPEND */
155 {'z', 'f', TRUE}, /* OP_FOLD */
156 {'z', 'o', TRUE}, /* OP_FOLDOPEN */
157 {'z', 'O', TRUE}, /* OP_FOLDOPENREC */
158 {'z', 'c', TRUE}, /* OP_FOLDCLOSE */
159 {'z', 'C', TRUE}, /* OP_FOLDCLOSEREC */
160 {'z', 'd', TRUE}, /* OP_FOLDDEL */
161 {'z', 'D', TRUE}, /* OP_FOLDDELREC */
162 {'g', 'w', TRUE}, /* OP_FORMAT2 */
163 {'g', '@', FALSE}, /* OP_FUNCTION */
164 };
165
166 /*
167 * Translate a command name into an operator type.
168 * Must only be called with a valid operator name!
169 */
170 int
171 get_op_type(char1, char2)
172 int char1;
173 int char2;
174 {
175 int i;
176
177 if (char1 == 'r') /* ignore second character */
178 return OP_REPLACE;
179 if (char1 == '~') /* when tilde is an operator */
180 return OP_TILDE;
181 for (i = 0; ; ++i)
182 if (opchars[i][0] == char1 && opchars[i][1] == char2)
183 break;
184 return i;
185 }
186
187 #if defined(FEAT_VISUAL) || defined(PROTO)
188 /*
189 * Return TRUE if operator "op" always works on whole lines.
190 */
191 int
192 op_on_lines(op)
193 int op;
194 {
195 return opchars[op][2];
196 }
197 #endif
198
199 /*
200 * Get first operator command character.
201 * Returns 'g' or 'z' if there is another command character.
202 */
203 int
204 get_op_char(optype)
205 int optype;
206 {
207 return opchars[optype][0];
208 }
209
210 /*
211 * Get second operator command character.
212 */
213 int
214 get_extra_op_char(optype)
215 int optype;
216 {
217 return opchars[optype][1];
218 }
219
220 /*
221 * op_shift - handle a shift operation
222 */
223 void
224 op_shift(oap, curs_top, amount)
225 oparg_T *oap;
226 int curs_top;
227 int amount;
228 {
229 long i;
230 int first_char;
231 char_u *s;
232 #ifdef FEAT_VISUAL
233 int block_col = 0;
234 #endif
235
236 if (u_save((linenr_T)(oap->start.lnum - 1),
237 (linenr_T)(oap->end.lnum + 1)) == FAIL)
238 return;
239
240 #ifdef FEAT_VISUAL
241 if (oap->block_mode)
242 block_col = curwin->w_cursor.col;
243 #endif
244
245 for (i = oap->line_count; --i >= 0; )
246 {
247 first_char = *ml_get_curline();
248 if (first_char == NUL) /* empty line */
249 curwin->w_cursor.col = 0;
250 #ifdef FEAT_VISUALEXTRA
251 else if (oap->block_mode)
252 shift_block(oap, amount);
253 #endif
254 else
255 /* Move the line right if it doesn't start with '#', 'smartindent'
256 * isn't set or 'cindent' isn't set or '#' isn't in 'cino'. */
257 #if defined(FEAT_SMARTINDENT) || defined(FEAT_CINDENT)
258 if (first_char != '#' || !preprocs_left())
259 #endif
260 {
261 shift_line(oap->op_type == OP_LSHIFT, p_sr, amount, FALSE);
262 }
263 ++curwin->w_cursor.lnum;
264 }
265
266 changed_lines(oap->start.lnum, 0, oap->end.lnum + 1, 0L);
267
268 #ifdef FEAT_VISUAL
269 if (oap->block_mode)
270 {
271 curwin->w_cursor.lnum = oap->start.lnum;
272 curwin->w_cursor.col = block_col;
273 }
274 else
275 #endif
276 if (curs_top) /* put cursor on first line, for ">>" */
277 {
278 curwin->w_cursor.lnum = oap->start.lnum;
279 beginline(BL_SOL | BL_FIX); /* shift_line() may have set cursor.col */
280 }
281 else
282 --curwin->w_cursor.lnum; /* put cursor on last line, for ":>" */
283
284 if (oap->line_count > p_report)
285 {
286 if (oap->op_type == OP_RSHIFT)
287 s = (char_u *)">";
288 else
289 s = (char_u *)"<";
290 if (oap->line_count == 1)
291 {
292 if (amount == 1)
293 sprintf((char *)IObuff, _("1 line %sed 1 time"), s);
294 else
295 sprintf((char *)IObuff, _("1 line %sed %d times"), s, amount);
296 }
297 else
298 {
299 if (amount == 1)
300 sprintf((char *)IObuff, _("%ld lines %sed 1 time"),
301 oap->line_count, s);
302 else
303 sprintf((char *)IObuff, _("%ld lines %sed %d times"),
304 oap->line_count, s, amount);
305 }
306 msg(IObuff);
307 }
308
309 /*
310 * Set "'[" and "']" marks.
311 */
312 curbuf->b_op_start = oap->start;
313 curbuf->b_op_end.lnum = oap->end.lnum;
314 curbuf->b_op_end.col = (colnr_T)STRLEN(ml_get(oap->end.lnum));
315 if (curbuf->b_op_end.col > 0)
316 --curbuf->b_op_end.col;
317 }
318
319 /*
320 * shift the current line one shiftwidth left (if left != 0) or right
321 * leaves cursor on first blank in the line
322 */
323 void
324 shift_line(left, round, amount, call_changed_bytes)
325 int left;
326 int round;
327 int amount;
328 int call_changed_bytes; /* call changed_bytes() */
329 {
330 int count;
331 int i, j;
332 int p_sw = (int)curbuf->b_p_sw;
333
334 count = get_indent(); /* get current indent */
335
336 if (round) /* round off indent */
337 {
338 i = count / p_sw; /* number of p_sw rounded down */
339 j = count % p_sw; /* extra spaces */
340 if (j && left) /* first remove extra spaces */
341 --amount;
342 if (left)
343 {
344 i -= amount;
345 if (i < 0)
346 i = 0;
347 }
348 else
349 i += amount;
350 count = i * p_sw;
351 }
352 else /* original vi indent */
353 {
354 if (left)
355 {
356 count -= p_sw * amount;
357 if (count < 0)
358 count = 0;
359 }
360 else
361 count += p_sw * amount;
362 }
363
364 /* Set new indent */
365 #ifdef FEAT_VREPLACE
366 if (State & VREPLACE_FLAG)
367 change_indent(INDENT_SET, count, FALSE, NUL, call_changed_bytes);
368 else
369 #endif
370 (void)set_indent(count, call_changed_bytes ? SIN_CHANGED : 0);
371 }
372
373 #if defined(FEAT_VISUALEXTRA) || defined(PROTO)
374 /*
375 * Shift one line of the current block one shiftwidth right or left.
376 * Leaves cursor on first character in block.
377 */
378 static void
379 shift_block(oap, amount)
380 oparg_T *oap;
381 int amount;
382 {
383 int left = (oap->op_type == OP_LSHIFT);
384 int oldstate = State;
385 int total, split;
386 char_u *newp, *oldp, *midp, *ptr;
387 int oldcol = curwin->w_cursor.col;
388 int p_sw = (int)curbuf->b_p_sw;
389 int p_ts = (int)curbuf->b_p_ts;
390 struct block_def bd;
391 int internal = 0;
392 int incr;
393 colnr_T vcol, col = 0, ws_vcol;
394 int i = 0, j = 0;
395 int len;
396
397 #ifdef FEAT_RIGHTLEFT
398 int old_p_ri = p_ri;
399
400 p_ri = 0; /* don't want revins in ident */
401 #endif
402
403 State = INSERT; /* don't want REPLACE for State */
404 block_prep(oap, &bd, curwin->w_cursor.lnum, TRUE);
405 if (bd.is_short)
406 return;
407
408 /* total is number of screen columns to be inserted/removed */
409 total = amount * p_sw;
410 oldp = ml_get_curline();
411
412 if (!left)
413 {
414 /*
415 * 1. Get start vcol
416 * 2. Total ws vcols
417 * 3. Divvy into TABs & spp
418 * 4. Construct new string
419 */
420 total += bd.pre_whitesp; /* all virtual WS upto & incl a split TAB */
421 ws_vcol = bd.start_vcol - bd.pre_whitesp;
422 if (bd.startspaces)
423 {
424 #ifdef FEAT_MBYTE
425 if (has_mbyte)
426 bd.textstart += (*mb_ptr2len)(bd.textstart);
427 #endif
428 ++bd.textstart;
429 }
430 for ( ; vim_iswhite(*bd.textstart); )
431 {
432 incr = lbr_chartabsize_adv(&bd.textstart, (colnr_T)(bd.start_vcol));
433 total += incr;
434 bd.start_vcol += incr;
435 }
436 /* OK, now total=all the VWS reqd, and textstart points at the 1st
437 * non-ws char in the block. */
438 if (!curbuf->b_p_et)
439 i = ((ws_vcol % p_ts) + total) / p_ts; /* number of tabs */
440 if (i)
441 j = ((ws_vcol % p_ts) + total) % p_ts; /* number of spp */
442 else
443 j = total;
444 /* if we're splitting a TAB, allow for it */
445 bd.textcol -= bd.pre_whitesp_c - (bd.startspaces != 0);
446 len = (int)STRLEN(bd.textstart) + 1;
447 newp = alloc_check((unsigned)(bd.textcol + i + j + len));
448 if (newp == NULL)
449 return;
450 vim_memset(newp, NUL, (size_t)(bd.textcol + i + j + len));
451 mch_memmove(newp, oldp, (size_t)bd.textcol);
452 copy_chars(newp + bd.textcol, (size_t)i, TAB);
453 copy_spaces(newp + bd.textcol + i, (size_t)j);
454 /* the end */
455 mch_memmove(newp + bd.textcol + i + j, bd.textstart, (size_t)len);
456 }
457 else /* left */
458 {
459 vcol = oap->start_vcol;
460 /* walk vcol past ws to be removed */
461 for (midp = oldp + bd.textcol;
462 vcol < (oap->start_vcol + total) && vim_iswhite(*midp); )
463 {
464 incr = lbr_chartabsize_adv(&midp, (colnr_T)vcol);
465 vcol += incr;
466 }
467 /* internal is the block-internal ws replacing a split TAB */
468 if (vcol > (oap->start_vcol + total))
469 {
470 /* we have to split the TAB *(midp-1) */
471 internal = vcol - (oap->start_vcol + total);
472 }
473 /* if 'expandtab' is not set, use TABs */
474
475 split = bd.startspaces + internal;
476 if (split > 0)
477 {
478 if (!curbuf->b_p_et)
479 {
480 for (ptr = oldp, col = 0; ptr < oldp+bd.textcol; )
481 col += lbr_chartabsize_adv(&ptr, (colnr_T)col);
482
483 /* col+1 now equals the start col of the first char of the
484 * block (may be < oap.start_vcol if we're splitting a TAB) */
485 i = ((col % p_ts) + split) / p_ts; /* number of tabs */
486 }
487 if (i)
488 j = ((col % p_ts) + split) % p_ts; /* number of spp */
489 else
490 j = split;
491 }
492
493 newp = alloc_check(bd.textcol + i + j + (unsigned)STRLEN(midp) + 1);
494 if (newp == NULL)
495 return;
496 vim_memset(newp, NUL, (size_t)(bd.textcol + i + j + STRLEN(midp) + 1));
497
498 /* copy first part we want to keep */
499 mch_memmove(newp, oldp, (size_t)bd.textcol);
500 /* Now copy any TABS and spp to ensure correct alignment! */
501 while (vim_iswhite(*midp))
502 {
503 if (*midp == TAB)
504 i++;
505 else /*space */
506 j++;
507 midp++;
508 }
509 /* We might have an extra TAB worth of spp now! */
510 if (j / p_ts && !curbuf->b_p_et)
511 {
512 i++;
513 j -= p_ts;
514 }
515 copy_chars(newp + bd.textcol, (size_t)i, TAB);
516 copy_spaces(newp + bd.textcol + i, (size_t)j);
517
518 /* the end */
519 mch_memmove(newp + STRLEN(newp), midp, (size_t)STRLEN(midp) + 1);
520 }
521 /* replace the line */
522 ml_replace(curwin->w_cursor.lnum, newp, FALSE);
523 changed_bytes(curwin->w_cursor.lnum, (colnr_T)bd.textcol);
524 State = oldstate;
525 curwin->w_cursor.col = oldcol;
526 #ifdef FEAT_RIGHTLEFT
527 p_ri = old_p_ri;
528 #endif
529 }
530 #endif
531
532 #ifdef FEAT_VISUALEXTRA
533 /*
534 * Insert string "s" (b_insert ? before : after) block :AKelly
535 * Caller must prepare for undo.
536 */
537 static void
538 block_insert(oap, s, b_insert, bdp)
539 oparg_T *oap;
540 char_u *s;
541 int b_insert;
542 struct block_def *bdp;
543 {
544 int p_ts;
545 int count = 0; /* extra spaces to replace a cut TAB */
546 int spaces = 0; /* non-zero if cutting a TAB */
547 colnr_T offset; /* pointer along new line */
548 unsigned s_len; /* STRLEN(s) */
549 char_u *newp, *oldp; /* new, old lines */
550 linenr_T lnum; /* loop var */
551 int oldstate = State;
552
553 State = INSERT; /* don't want REPLACE for State */
554 s_len = (unsigned)STRLEN(s);
555
556 for (lnum = oap->start.lnum + 1; lnum <= oap->end.lnum; lnum++)
557 {
558 block_prep(oap, bdp, lnum, TRUE);
559 if (bdp->is_short && b_insert)
560 continue; /* OP_INSERT, line ends before block start */
561
562 oldp = ml_get(lnum);
563
564 if (b_insert)
565 {
566 p_ts = bdp->start_char_vcols;
567 spaces = bdp->startspaces;
568 if (spaces != 0)
569 count = p_ts - 1; /* we're cutting a TAB */
570 offset = bdp->textcol;
571 }
572 else /* append */
573 {
574 p_ts = bdp->end_char_vcols;
575 if (!bdp->is_short) /* spaces = padding after block */
576 {
577 spaces = (bdp->endspaces ? p_ts - bdp->endspaces : 0);
578 if (spaces != 0)
579 count = p_ts - 1; /* we're cutting a TAB */
580 offset = bdp->textcol + bdp->textlen - (spaces != 0);
581 }
582 else /* spaces = padding to block edge */
583 {
584 /* if $ used, just append to EOL (ie spaces==0) */
585 if (!bdp->is_MAX)
586 spaces = (oap->end_vcol - bdp->end_vcol) + 1;
587 count = spaces;
588 offset = bdp->textcol + bdp->textlen;
589 }
590 }
591
592 newp = alloc_check((unsigned)(STRLEN(oldp)) + s_len + count + 1);
593 if (newp == NULL)
594 continue;
595
596 /* copy up to shifted part */
597 mch_memmove(newp, oldp, (size_t)(offset));
598 oldp += offset;
599
600 /* insert pre-padding */
601 copy_spaces(newp + offset, (size_t)spaces);
602
603 /* copy the new text */
604 mch_memmove(newp + offset + spaces, s, (size_t)s_len);
605 offset += s_len;
606
607 if (spaces && !bdp->is_short)
608 {
609 /* insert post-padding */
610 copy_spaces(newp + offset + spaces, (size_t)(p_ts - spaces));
611 /* We're splitting a TAB, don't copy it. */
612 oldp++;
613 /* We allowed for that TAB, remember this now */
614 count++;
615 }
616
617 if (spaces > 0)
618 offset += count;
619 mch_memmove(newp + offset, oldp, (size_t)(STRLEN(oldp) + 1));
620
621 ml_replace(lnum, newp, FALSE);
622
623 if (lnum == oap->end.lnum)
624 {
625 /* Set "']" mark to the end of the block instead of the end of
626 * the insert in the first line. */
627 curbuf->b_op_end.lnum = oap->end.lnum;
628 curbuf->b_op_end.col = offset;
629 }
630 } /* for all lnum */
631
632 changed_lines(oap->start.lnum + 1, 0, oap->end.lnum + 1, 0L);
633
634 State = oldstate;
635 }
636 #endif
637
638 #if defined(FEAT_LISP) || defined(FEAT_CINDENT) || defined(PROTO)
639 /*
640 * op_reindent - handle reindenting a block of lines.
641 */
642 void
643 op_reindent(oap, how)
644 oparg_T *oap;
645 int (*how) __ARGS((void));
646 {
647 long i;
648 char_u *l;
649 int count;
650 linenr_T first_changed = 0;
651 linenr_T last_changed = 0;
652 linenr_T start_lnum = curwin->w_cursor.lnum;
653
654 /* Don't even try when 'modifiable' is off. */
655 if (!curbuf->b_p_ma)
656 {
657 EMSG(_(e_modifiable));
658 return;
659 }
660
661 for (i = oap->line_count; --i >= 0 && !got_int; )
662 {
663 /* it's a slow thing to do, so give feedback so there's no worry that
664 * the computer's just hung. */
665
666 if (i > 1
667 && (i % 50 == 0 || i == oap->line_count - 1)
668 && oap->line_count > p_report)
669 smsg((char_u *)_("%ld lines to indent... "), i);
670
671 /*
672 * Be vi-compatible: For lisp indenting the first line is not
673 * indented, unless there is only one line.
674 */
675 #ifdef FEAT_LISP
676 if (i != oap->line_count - 1 || oap->line_count == 1
677 || how != get_lisp_indent)
678 #endif
679 {
680 l = skipwhite(ml_get_curline());
681 if (*l == NUL) /* empty or blank line */
682 count = 0;
683 else
684 count = how(); /* get the indent for this line */
685
686 if (set_indent(count, SIN_UNDO))
687 {
688 /* did change the indent, call changed_lines() later */
689 if (first_changed == 0)
690 first_changed = curwin->w_cursor.lnum;
691 last_changed = curwin->w_cursor.lnum;
692 }
693 }
694 ++curwin->w_cursor.lnum;
695 }
696
697 /* put cursor on first non-blank of indented line */
698 curwin->w_cursor.lnum = start_lnum;
699 beginline(BL_SOL | BL_FIX);
700
701 /* Mark changed lines so that they will be redrawn. When Visual
702 * highlighting was present, need to continue until the last line. When
703 * there is no change still need to remove the Visual highlighting. */
704 if (last_changed != 0)
705 changed_lines(first_changed, 0,
706 #ifdef FEAT_VISUAL
707 oap->is_VIsual ? start_lnum + oap->line_count :
708 #endif
709 last_changed + 1, 0L);
710 #ifdef FEAT_VISUAL
711 else if (oap->is_VIsual)
712 redraw_curbuf_later(INVERTED);
713 #endif
714
715 if (oap->line_count > p_report)
716 {
717 i = oap->line_count - (i + 1);
718 if (i == 1)
719 MSG(_("1 line indented "));
720 else
721 smsg((char_u *)_("%ld lines indented "), i);
722 }
723 /* set '[ and '] marks */
724 curbuf->b_op_start = oap->start;
725 curbuf->b_op_end = oap->end;
726 }
727 #endif /* defined(FEAT_LISP) || defined(FEAT_CINDENT) */
728
729 #if defined(FEAT_EVAL) || defined(PROTO)
730 /*
731 * Keep the last expression line here, for repeating.
732 */
733 static char_u *expr_line = NULL;
734
735 /*
736 * Get an expression for the "\"=expr1" or "CTRL-R =expr1"
737 * Returns '=' when OK, NUL otherwise.
738 */
739 int
740 get_expr_register()
741 {
742 char_u *new_line;
743
744 new_line = getcmdline('=', 0L, 0);
745 if (new_line == NULL)
746 return NUL;
747 if (*new_line == NUL) /* use previous line */
748 vim_free(new_line);
749 else
750 set_expr_line(new_line);
751 return '=';
752 }
753
754 /*
755 * Set the expression for the '=' register.
756 * Argument must be an allocated string.
757 */
758 void
759 set_expr_line(new_line)
760 char_u *new_line;
761 {
762 vim_free(expr_line);
763 expr_line = new_line;
764 }
765
766 /*
767 * Get the result of the '=' register expression.
768 * Returns a pointer to allocated memory, or NULL for failure.
769 */
770 char_u *
771 get_expr_line()
772 {
773 char_u *expr_copy;
774 char_u *rv;
775 static int nested = 0;
776
777 if (expr_line == NULL)
778 return NULL;
779
780 /* Make a copy of the expression, because evaluating it may cause it to be
781 * changed. */
782 expr_copy = vim_strsave(expr_line);
783 if (expr_copy == NULL)
784 return NULL;
785
786 /* When we are invoked recursively limit the evaluation to 10 levels.
787 * Then return the string as-is. */
788 if (nested >= 10)
789 return expr_copy;
790
791 ++nested;
792 rv = eval_to_string(expr_copy, NULL, TRUE);
793 --nested;
794 vim_free(expr_copy);
795 return rv;
796 }
797
798 /*
799 * Get the '=' register expression itself, without evaluating it.
800 */
801 char_u *
802 get_expr_line_src()
803 {
804 if (expr_line == NULL)
805 return NULL;
806 return vim_strsave(expr_line);
807 }
808 #endif /* FEAT_EVAL */
809
810 /*
811 * Check if 'regname' is a valid name of a yank register.
812 * Note: There is no check for 0 (default register), caller should do this
813 */
814 int
815 valid_yank_reg(regname, writing)
816 int regname;
817 int writing; /* if TRUE check for writable registers */
818 {
819 if ( (regname > 0 && ASCII_ISALNUM(regname))
820 || (!writing && vim_strchr((char_u *)
821 #ifdef FEAT_EVAL
822 "/.%#:="
823 #else
824 "/.%#:"
825 #endif
826 , regname) != NULL)
827 || regname == '"'
828 || regname == '-'
829 || regname == '_'
830 #ifdef FEAT_CLIPBOARD
831 || regname == '*'
832 || regname == '+'
833 #endif
834 #ifdef FEAT_DND
835 || (!writing && regname == '~')
836 #endif
837 )
838 return TRUE;
839 return FALSE;
840 }
841
842 /*
843 * Set y_current and y_append, according to the value of "regname".
844 * Cannot handle the '_' register.
845 * Must only be called with a valid register name!
846 *
847 * If regname is 0 and writing, use register 0
848 * If regname is 0 and reading, use previous register
849 */
850 void
851 get_yank_register(regname, writing)
852 int regname;
853 int writing;
854 {
855 int i;
856
857 y_append = FALSE;
858 if ((regname == 0 || regname == '"') && !writing && y_previous != NULL)
859 {
860 y_current = y_previous;
861 return;
862 }
863 i = regname;
864 if (VIM_ISDIGIT(i))
865 i -= '0';
866 else if (ASCII_ISLOWER(i))
867 i = CharOrdLow(i) + 10;
868 else if (ASCII_ISUPPER(i))
869 {
870 i = CharOrdUp(i) + 10;
871 y_append = TRUE;
872 }
873 else if (regname == '-')
874 i = DELETION_REGISTER;
875 #ifdef FEAT_CLIPBOARD
876 /* When selection is not available, use register 0 instead of '*' */
877 else if (clip_star.available && regname == '*')
878 i = STAR_REGISTER;
879 /* When clipboard is not available, use register 0 instead of '+' */
880 else if (clip_plus.available && regname == '+')
881 i = PLUS_REGISTER;
882 #endif
883 #ifdef FEAT_DND
884 else if (!writing && regname == '~')
885 i = TILDE_REGISTER;
886 #endif
887 else /* not 0-9, a-z, A-Z or '-': use register 0 */
888 i = 0;
889 y_current = &(y_regs[i]);
890 if (writing) /* remember the register we write into for do_put() */
891 y_previous = y_current;
892 }
893
894 #if defined(FEAT_CLIPBOARD) || defined(PROTO)
895 /*
896 * When "regname" is a clipboard register, obtain the selection. If it's not
897 * available return zero, otherwise return "regname".
898 */
899 int
900 may_get_selection(regname)
901 int regname;
902 {
903 if (regname == '*')
904 {
905 if (!clip_star.available)
906 regname = 0;
907 else
908 clip_get_selection(&clip_star);
909 }
910 else if (regname == '+')
911 {
912 if (!clip_plus.available)
913 regname = 0;
914 else
915 clip_get_selection(&clip_plus);
916 }
917 return regname;
918 }
919 #endif
920
921 #if defined(FEAT_VISUAL) || defined(PROTO)
922 /*
923 * Obtain the contents of a "normal" register. The register is made empty.
924 * The returned pointer has allocated memory, use put_register() later.
925 */
926 void *
927 get_register(name, copy)
928 int name;
929 int copy; /* make a copy, if FALSE make register empty. */
930 {
931 struct yankreg *reg;
932 int i;
933
934 #ifdef FEAT_CLIPBOARD
935 /* When Visual area changed, may have to update selection. Obtain the
936 * selection too. */
937 if (name == '*' && clip_star.available)
938 {
939 if (clip_isautosel())
940 clip_update_selection();
941 may_get_selection(name);
942 }
943 #endif
944
945 get_yank_register(name, 0);
946 reg = (struct yankreg *)alloc((unsigned)sizeof(struct yankreg));
947 if (reg != NULL)
948 {
949 *reg = *y_current;
950 if (copy)
951 {
952 /* If we run out of memory some or all of the lines are empty. */
953 if (reg->y_size == 0)
954 reg->y_array = NULL;
955 else
956 reg->y_array = (char_u **)alloc((unsigned)(sizeof(char_u *)
957 * reg->y_size));
958 if (reg->y_array != NULL)
959 {
960 for (i = 0; i < reg->y_size; ++i)
961 reg->y_array[i] = vim_strsave(y_current->y_array[i]);
962 }
963 }
964 else
965 y_current->y_array = NULL;
966 }
967 return (void *)reg;
968 }
969
970 /*
971 * Put "reg" into register "name". Free any previous contents and "reg".
972 */
973 void
974 put_register(name, reg)
975 int name;
976 void *reg;
977 {
978 get_yank_register(name, 0);
979 free_yank_all();
980 *y_current = *(struct yankreg *)reg;
981 vim_free(reg);
982
983 # ifdef FEAT_CLIPBOARD
984 /* Send text written to clipboard register to the clipboard. */
985 may_set_selection();
986 # endif
987 }
988 #endif
989
990 #if defined(FEAT_MOUSE) || defined(PROTO)
991 /*
992 * return TRUE if the current yank register has type MLINE
993 */
994 int
995 yank_register_mline(regname)
996 int regname;
997 {
998 if (regname != 0 && !valid_yank_reg(regname, FALSE))
999 return FALSE;
1000 if (regname == '_') /* black hole is always empty */
1001 return FALSE;
1002 get_yank_register(regname, FALSE);
1003 return (y_current->y_type == MLINE);
1004 }
1005 #endif
1006
1007 /*
1008 * Start or stop recording into a yank register.
1009 *
1010 * Return FAIL for failure, OK otherwise.
1011 */
1012 int
1013 do_record(c)
1014 int c;
1015 {
1016 char_u *p;
1017 static int regname;
1018 struct yankreg *old_y_previous, *old_y_current;
1019 int retval;
1020
1021 if (Recording == FALSE) /* start recording */
1022 {
1023 /* registers 0-9, a-z and " are allowed */
1024 if (c < 0 || (!ASCII_ISALNUM(c) && c != '"'))
1025 retval = FAIL;
1026 else
1027 {
1028 Recording = TRUE;
1029 showmode();
1030 regname = c;
1031 retval = OK;
1032 }
1033 }
1034 else /* stop recording */
1035 {
1036 /*
1037 * Get the recorded key hits. K_SPECIAL and CSI will be escaped, this
1038 * needs to be removed again to put it in a register. exec_reg then
1039 * adds the escaping back later.
1040 */
1041 Recording = FALSE;
1042 MSG("");
1043 p = get_recorded();
1044 if (p == NULL)
1045 retval = FAIL;
1046 else
1047 {
1048 /* Remove escaping for CSI and K_SPECIAL in multi-byte chars. */
1049 vim_unescape_csi(p);
1050
1051 /*
1052 * We don't want to change the default register here, so save and
1053 * restore the current register name.
1054 */
1055 old_y_previous = y_previous;
1056 old_y_current = y_current;
1057
1058 retval = stuff_yank(regname, p);
1059
1060 y_previous = old_y_previous;
1061 y_current = old_y_current;
1062 }
1063 }
1064 return retval;
1065 }
1066
1067 /*
1068 * Stuff string "p" into yank register "regname" as a single line (append if
1069 * uppercase). "p" must have been alloced.
1070 *
1071 * return FAIL for failure, OK otherwise
1072 */
1073 static int
1074 stuff_yank(regname, p)
1075 int regname;
1076 char_u *p;
1077 {
1078 char_u *lp;
1079 char_u **pp;
1080
1081 /* check for read-only register */
1082 if (regname != 0 && !valid_yank_reg(regname, TRUE))
1083 {
1084 vim_free(p);
1085 return FAIL;
1086 }
1087 if (regname == '_') /* black hole: don't do anything */
1088 {
1089 vim_free(p);
1090 return OK;
1091 }
1092 get_yank_register(regname, TRUE);
1093 if (y_append && y_current->y_array != NULL)
1094 {
1095 pp = &(y_current->y_array[y_current->y_size - 1]);
1096 lp = lalloc((long_u)(STRLEN(*pp) + STRLEN(p) + 1), TRUE);
1097 if (lp == NULL)
1098 {
1099 vim_free(p);
1100 return FAIL;
1101 }
1102 STRCPY(lp, *pp);
1103 STRCAT(lp, p);
1104 vim_free(p);
1105 vim_free(*pp);
1106 *pp = lp;
1107 }
1108 else
1109 {
1110 free_yank_all();
1111 if ((y_current->y_array =
1112 (char_u **)alloc((unsigned)sizeof(char_u *))) == NULL)
1113 {
1114 vim_free(p);
1115 return FAIL;
1116 }
1117 y_current->y_array[0] = p;
1118 y_current->y_size = 1;
1119 y_current->y_type = MCHAR; /* used to be MLINE, why? */
1120 }
1121 return OK;
1122 }
1123
1124 /*
1125 * execute a yank register: copy it into the stuff buffer
1126 *
1127 * return FAIL for failure, OK otherwise
1128 */
1129 int
1130 do_execreg(regname, colon, addcr, silent)
1131 int regname;
1132 int colon; /* insert ':' before each line */
1133 int addcr; /* always add '\n' to end of line */
1134 int silent; /* set "silent" flag in typeahead buffer */
1135 {
1136 static int lastc = NUL;
1137 long i;
1138 char_u *p;
1139 int retval = OK;
1140 int remap;
1141
1142 if (regname == '@') /* repeat previous one */
1143 {
1144 if (lastc == NUL)
1145 {
1146 EMSG(_("E748: No previously used register"));
1147 return FAIL;
1148 }
1149 regname = lastc;
1150 }
1151 /* check for valid regname */
1152 if (regname == '%' || regname == '#' || !valid_yank_reg(regname, FALSE))
1153 {
1154 emsg_invreg(regname);
1155 return FAIL;
1156 }
1157 lastc = regname;
1158
1159 #ifdef FEAT_CLIPBOARD
1160 regname = may_get_selection(regname);
1161 #endif
1162
1163 if (regname == '_') /* black hole: don't stuff anything */
1164 return OK;
1165
1166 #ifdef FEAT_CMDHIST
1167 if (regname == ':') /* use last command line */
1168 {
1169 if (last_cmdline == NULL)
1170 {
1171 EMSG(_(e_nolastcmd));
1172 return FAIL;
1173 }
1174 vim_free(new_last_cmdline); /* don't keep the cmdline containing @: */
1175 new_last_cmdline = NULL;
1176 /* Escape all control characters with a CTRL-V */
1177 p = vim_strsave_escaped_ext(last_cmdline,
1178 (char_u *)"\001\002\003\004\005\006\007\010\011\012\013\014\015\016\017\020\021\022\023\024\025\026\027\030\031\032\033\034\035\036\037", Ctrl_V, FALSE);
1179 if (p != NULL)
1180 {
1181 /* When in Visual mode "'<,'>" will be prepended to the command.
1182 * Remove it when it's already there. */
1183 if (VIsual_active && STRNCMP(p, "'<,'>", 5) == 0)
1184 retval = put_in_typebuf(p + 5, TRUE, TRUE, silent);
1185 else
1186 retval = put_in_typebuf(p, TRUE, TRUE, silent);
1187 }
1188 vim_free(p);
1189 }
1190 #endif
1191 #ifdef FEAT_EVAL
1192 else if (regname == '=')
1193 {
1194 p = get_expr_line();
1195 if (p == NULL)
1196 return FAIL;
1197 retval = put_in_typebuf(p, TRUE, colon, silent);
1198 vim_free(p);
1199 }
1200 #endif
1201 else if (regname == '.') /* use last inserted text */
1202 {
1203 p = get_last_insert_save();
1204 if (p == NULL)
1205 {
1206 EMSG(_(e_noinstext));
1207 return FAIL;
1208 }
1209 retval = put_in_typebuf(p, FALSE, colon, silent);
1210 vim_free(p);
1211 }
1212 else
1213 {
1214 get_yank_register(regname, FALSE);
1215 if (y_current->y_array == NULL)
1216 return FAIL;
1217
1218 /* Disallow remaping for ":@r". */
1219 remap = colon ? REMAP_NONE : REMAP_YES;
1220
1221 /*
1222 * Insert lines into typeahead buffer, from last one to first one.
1223 */
1224 put_reedit_in_typebuf(silent);
1225 for (i = y_current->y_size; --i >= 0; )
1226 {
1227 char_u *escaped;
1228
1229 /* insert NL between lines and after last line if type is MLINE */
1230 if (y_current->y_type == MLINE || i < y_current->y_size - 1
1231 || addcr)
1232 {
1233 if (ins_typebuf((char_u *)"\n", remap, 0, TRUE, silent) == FAIL)
1234 return FAIL;
1235 }
1236 escaped = vim_strsave_escape_csi(y_current->y_array[i]);
1237 if (escaped == NULL)
1238 return FAIL;
1239 retval = ins_typebuf(escaped, remap, 0, TRUE, silent);
1240 vim_free(escaped);
1241 if (retval == FAIL)
1242 return FAIL;
1243 if (colon && ins_typebuf((char_u *)":", remap, 0, TRUE, silent)
1244 == FAIL)
1245 return FAIL;
1246 }
1247 Exec_reg = TRUE; /* disable the 'q' command */
1248 }
1249 return retval;
1250 }
1251
1252 /*
1253 * If "restart_edit" is not zero, put it in the typeahead buffer, so that it's
1254 * used only after other typeahead has been processed.
1255 */
1256 static void
1257 put_reedit_in_typebuf(silent)
1258 int silent;
1259 {
1260 char_u buf[3];
1261
1262 if (restart_edit != NUL)
1263 {
1264 if (restart_edit == 'V')
1265 {
1266 buf[0] = 'g';
1267 buf[1] = 'R';
1268 buf[2] = NUL;
1269 }
1270 else
1271 {
1272 buf[0] = restart_edit == 'I' ? 'i' : restart_edit;
1273 buf[1] = NUL;
1274 }
1275 if (ins_typebuf(buf, REMAP_NONE, 0, TRUE, silent) == OK)
1276 restart_edit = NUL;
1277 }
1278 }
1279
1280 static int
1281 put_in_typebuf(s, esc, colon, silent)
1282 char_u *s;
1283 int esc; /* Escape CSI characters */
1284 int colon; /* add ':' before the line */
1285 int silent;
1286 {
1287 int retval = OK;
1288
1289 put_reedit_in_typebuf(silent);
1290 if (colon)
1291 retval = ins_typebuf((char_u *)"\n", REMAP_YES, 0, TRUE, silent);
1292 if (retval == OK)
1293 {
1294 char_u *p;
1295
1296 if (esc)
1297 p = vim_strsave_escape_csi(s);
1298 else
1299 p = s;
1300 if (p == NULL)
1301 retval = FAIL;
1302 else
1303 retval = ins_typebuf(p, REMAP_YES, 0, TRUE, silent);
1304 if (esc)
1305 vim_free(p);
1306 }
1307 if (colon && retval == OK)
1308 retval = ins_typebuf((char_u *)":", REMAP_YES, 0, TRUE, silent);
1309 return retval;
1310 }
1311
1312 /*
1313 * Insert a yank register: copy it into the Read buffer.
1314 * Used by CTRL-R command and middle mouse button in insert mode.
1315 *
1316 * return FAIL for failure, OK otherwise
1317 */
1318 int
1319 insert_reg(regname, literally)
1320 int regname;
1321 int literally; /* insert literally, not as if typed */
1322 {
1323 long i;
1324 int retval = OK;
1325 char_u *arg;
1326 int allocated;
1327
1328 /*
1329 * It is possible to get into an endless loop by having CTRL-R a in
1330 * register a and then, in insert mode, doing CTRL-R a.
1331 * If you hit CTRL-C, the loop will be broken here.
1332 */
1333 ui_breakcheck();
1334 if (got_int)
1335 return FAIL;
1336
1337 /* check for valid regname */
1338 if (regname != NUL && !valid_yank_reg(regname, FALSE))
1339 return FAIL;
1340
1341 #ifdef FEAT_CLIPBOARD
1342 regname = may_get_selection(regname);
1343 #endif
1344
1345 if (regname == '.') /* insert last inserted text */
1346 retval = stuff_inserted(NUL, 1L, TRUE);
1347 else if (get_spec_reg(regname, &arg, &allocated, TRUE))
1348 {
1349 if (arg == NULL)
1350 return FAIL;
1351 stuffescaped(arg, literally);
1352 if (allocated)
1353 vim_free(arg);
1354 }
1355 else /* name or number register */
1356 {
1357 get_yank_register(regname, FALSE);
1358 if (y_current->y_array == NULL)
1359 retval = FAIL;
1360 else
1361 {
1362 for (i = 0; i < y_current->y_size; ++i)
1363 {
1364 stuffescaped(y_current->y_array[i], literally);
1365 /*
1366 * Insert a newline between lines and after last line if
1367 * y_type is MLINE.
1368 */
1369 if (y_current->y_type == MLINE || i < y_current->y_size - 1)
1370 stuffcharReadbuff('\n');
1371 }
1372 }
1373 }
1374
1375 return retval;
1376 }
1377
1378 /*
1379 * Stuff a string into the typeahead buffer, such that edit() will insert it
1380 * literally ("literally" TRUE) or interpret is as typed characters.
1381 */
1382 static void
1383 stuffescaped(arg, literally)
1384 char_u *arg;
1385 int literally;
1386 {
1387 int c;
1388 char_u *start;
1389
1390 while (*arg != NUL)
1391 {
1392 /* Stuff a sequence of normal ASCII characters, that's fast. Also
1393 * stuff K_SPECIAL to get the effect of a special key when "literally"
1394 * is TRUE. */
1395 start = arg;
1396 while ((*arg >= ' '
1397 #ifndef EBCDIC
1398 && *arg < DEL /* EBCDIC: chars above space are normal */
1399 #endif
1400 )
1401 || (*arg == K_SPECIAL && !literally))
1402 ++arg;
1403 if (arg > start)
1404 stuffReadbuffLen(start, (long)(arg - start));
1405
1406 /* stuff a single special character */
1407 if (*arg != NUL)
1408 {
1409 #ifdef FEAT_MBYTE
1410 if (has_mbyte)
1411 c = mb_ptr2char_adv(&arg);
1412 else
1413 #endif
1414 c = *arg++;
1415 if (literally && ((c < ' ' && c != TAB) || c == DEL))
1416 stuffcharReadbuff(Ctrl_V);
1417 stuffcharReadbuff(c);
1418 }
1419 }
1420 }
1421
1422 /*
1423 * If "regname" is a special register, return TRUE and store a pointer to its
1424 * value in "argp".
1425 */
1426 int
1427 get_spec_reg(regname, argp, allocated, errmsg)
1428 int regname;
1429 char_u **argp;
1430 int *allocated; /* return: TRUE when value was allocated */
1431 int errmsg; /* give error message when failing */
1432 {
1433 int cnt;
1434
1435 *argp = NULL;
1436 *allocated = FALSE;
1437 switch (regname)
1438 {
1439 case '%': /* file name */
1440 if (errmsg)
1441 check_fname(); /* will give emsg if not set */
1442 *argp = curbuf->b_fname;
1443 return TRUE;
1444
1445 case '#': /* alternate file name */
1446 *argp = getaltfname(errmsg); /* may give emsg if not set */
1447 return TRUE;
1448
1449 #ifdef FEAT_EVAL
1450 case '=': /* result of expression */
1451 *argp = get_expr_line();
1452 *allocated = TRUE;
1453 return TRUE;
1454 #endif
1455
1456 case ':': /* last command line */
1457 if (last_cmdline == NULL && errmsg)
1458 EMSG(_(e_nolastcmd));
1459 *argp = last_cmdline;
1460 return TRUE;
1461
1462 case '/': /* last search-pattern */
1463 if (last_search_pat() == NULL && errmsg)
1464 EMSG(_(e_noprevre));
1465 *argp = last_search_pat();
1466 return TRUE;
1467
1468 case '.': /* last inserted text */
1469 *argp = get_last_insert_save();
1470 *allocated = TRUE;
1471 if (*argp == NULL && errmsg)
1472 EMSG(_(e_noinstext));
1473 return TRUE;
1474
1475 #ifdef FEAT_SEARCHPATH
1476 case Ctrl_F: /* Filename under cursor */
1477 case Ctrl_P: /* Path under cursor, expand via "path" */
1478 if (!errmsg)
1479 return FALSE;
1480 *argp = file_name_at_cursor(FNAME_MESS | FNAME_HYP
1481 | (regname == Ctrl_P ? FNAME_EXP : 0), 1L, NULL);
1482 *allocated = TRUE;
1483 return TRUE;
1484 #endif
1485
1486 case Ctrl_W: /* word under cursor */
1487 case Ctrl_A: /* WORD (mnemonic All) under cursor */
1488 if (!errmsg)
1489 return FALSE;
1490 cnt = find_ident_under_cursor(argp, regname == Ctrl_W
1491 ? (FIND_IDENT|FIND_STRING) : FIND_STRING);
1492 *argp = cnt ? vim_strnsave(*argp, cnt) : NULL;
1493 *allocated = TRUE;
1494 return TRUE;
1495
1496 case '_': /* black hole: always empty */
1497 *argp = (char_u *)"";
1498 return TRUE;
1499 }
1500
1501 return FALSE;
1502 }
1503
1504 /*
1505 * Paste a yank register into the command line.
1506 * Only for non-special registers.
1507 * Used by CTRL-R command in command-line mode
1508 * insert_reg() can't be used here, because special characters from the
1509 * register contents will be interpreted as commands.
1510 *
1511 * return FAIL for failure, OK otherwise
1512 */
1513 int
1514 cmdline_paste_reg(regname, literally, remcr)
1515 int regname;
1516 int literally; /* Insert text literally instead of "as typed" */
1517 int remcr; /* don't add trailing CR */
1518 {
1519 long i;
1520
1521 get_yank_register(regname, FALSE);
1522 if (y_current->y_array == NULL)
1523 return FAIL;
1524
1525 for (i = 0; i < y_current->y_size; ++i)
1526 {
1527 cmdline_paste_str(y_current->y_array[i], literally);
1528
1529 /* Insert ^M between lines and after last line if type is MLINE.
1530 * Don't do this when "remcr" is TRUE and the next line is empty. */
1531 if (y_current->y_type == MLINE
1532 || (i < y_current->y_size - 1
1533 && !(remcr
1534 && i == y_current->y_size - 2
1535 && *y_current->y_array[i + 1] == NUL)))
1536 cmdline_paste_str((char_u *)"\r", literally);
1537
1538 /* Check for CTRL-C, in case someone tries to paste a few thousand
1539 * lines and gets bored. */
1540 ui_breakcheck();
1541 if (got_int)
1542 return FAIL;
1543 }
1544 return OK;
1545 }
1546
1547 #if defined(FEAT_CLIPBOARD) || defined(PROTO)
1548 /*
1549 * Adjust the register name pointed to with "rp" for the clipboard being
1550 * used always and the clipboard being available.
1551 */
1552 void
1553 adjust_clip_reg(rp)
1554 int *rp;
1555 {
1556 /* If no reg. specified, and "unnamed" is in 'clipboard', use '*' reg. */
1557 if (*rp == 0 && clip_unnamed)
1558 *rp = '*';
1559 if (!clip_star.available && *rp == '*')
1560 *rp = 0;
1561 if (!clip_plus.available && *rp == '+')
1562 *rp = 0;
1563 }
1564 #endif
1565
1566 /*
1567 * op_delete - handle a delete operation
1568 *
1569 * return FAIL if undo failed, OK otherwise.
1570 */
1571 int
1572 op_delete(oap)
1573 oparg_T *oap;
1574 {
1575 int n;
1576 linenr_T lnum;
1577 char_u *ptr;
1578 #ifdef FEAT_VISUAL
1579 char_u *newp, *oldp;
1580 struct block_def bd;
1581 #endif
1582 linenr_T old_lcount = curbuf->b_ml.ml_line_count;
1583 int did_yank = FALSE;
1584
1585 if (curbuf->b_ml.ml_flags & ML_EMPTY) /* nothing to do */
1586 return OK;
1587
1588 /* Nothing to delete, return here. Do prepare undo, for op_change(). */
1589 if (oap->empty)
1590 return u_save_cursor();
1591
1592 if (!curbuf->b_p_ma)
1593 {
1594 EMSG(_(e_modifiable));
1595 return FAIL;
1596 }
1597
1598 #ifdef FEAT_CLIPBOARD
1599 adjust_clip_reg(&oap->regname);
1600 #endif
1601
1602 #ifdef FEAT_MBYTE
1603 if (has_mbyte)
1604 mb_adjust_opend(oap);
1605 #endif
1606
1607 /*
1608 * Imitate the strange Vi behaviour: If the delete spans more than one line
1609 * and motion_type == MCHAR and the result is a blank line, make the delete
1610 * linewise. Don't do this for the change command or Visual mode.
1611 */
1612 if ( oap->motion_type == MCHAR
1613 #ifdef FEAT_VISUAL
1614 && !oap->is_VIsual
1615 && !oap->block_mode
1616 #endif
1617 && oap->line_count > 1
1618 && oap->op_type == OP_DELETE)
1619 {
1620 ptr = ml_get(oap->end.lnum) + oap->end.col + oap->inclusive;
1621 ptr = skipwhite(ptr);
1622 if (*ptr == NUL && inindent(0))
1623 oap->motion_type = MLINE;
1624 }
1625
1626 /*
1627 * Check for trying to delete (e.g. "D") in an empty line.
1628 * Note: For the change operator it is ok.
1629 */
1630 if ( oap->motion_type == MCHAR
1631 && oap->line_count == 1
1632 && oap->op_type == OP_DELETE
1633 && *ml_get(oap->start.lnum) == NUL)
1634 {
1635 /*
1636 * It's an error to operate on an empty region, when 'E' included in
1637 * 'cpoptions' (Vi compatible).
1638 */
1639 #ifdef FEAT_VIRTUALEDIT
1640 if (virtual_op)
1641 /* Virtual editing: Nothing gets deleted, but we set the '[ and ']
1642 * marks as if it happened. */
1643 goto setmarks;
1644 #endif
1645 if (vim_strchr(p_cpo, CPO_EMPTYREGION) != NULL)
1646 beep_flush();
1647 return OK;
1648 }
1649
1650 /*
1651 * Do a yank of whatever we're about to delete.
1652 * If a yank register was specified, put the deleted text into that register.
1653 * For the black hole register '_' don't yank anything.
1654 */
1655 if (oap->regname != '_')
1656 {
1657 if (oap->regname != 0)
1658 {
1659 /* check for read-only register */
1660 if (!valid_yank_reg(oap->regname, TRUE))
1661 {
1662 beep_flush();
1663 return OK;
1664 }
1665 get_yank_register(oap->regname, TRUE); /* yank into specif'd reg. */
1666 if (op_yank(oap, TRUE, FALSE) == OK) /* yank without message */
1667 did_yank = TRUE;
1668 }
1669
1670 /*
1671 * Put deleted text into register 1 and shift number registers if the
1672 * delete contains a line break, or when a regname has been specified.
1673 */
1674 if (oap->regname != 0 || oap->motion_type == MLINE
1675 || oap->line_count > 1 || oap->use_reg_one)
1676 {
1677 y_current = &y_regs[9];
1678 free_yank_all(); /* free register nine */
1679 for (n = 9; n > 1; --n)
1680 y_regs[n] = y_regs[n - 1];
1681 y_previous = y_current = &y_regs[1];
1682 y_regs[1].y_array = NULL; /* set register one to empty */
1683 if (op_yank(oap, TRUE, FALSE) == OK)
1684 did_yank = TRUE;
1685 }
1686
1687 /* Yank into small delete register when no register specified and the
1688 * delete is within one line. */
1689 if (oap->regname == 0 && oap->motion_type != MLINE
1690 && oap->line_count == 1)
1691 {
1692 oap->regname = '-';
1693 get_yank_register(oap->regname, TRUE);
1694 if (op_yank(oap, TRUE, FALSE) == OK)
1695 did_yank = TRUE;
1696 oap->regname = 0;
1697 }
1698
1699 /*
1700 * If there's too much stuff to fit in the yank register, then get a
1701 * confirmation before doing the delete. This is crude, but simple.
1702 * And it avoids doing a delete of something we can't put back if we
1703 * want.
1704 */
1705 if (!did_yank)
1706 {
1707 int msg_silent_save = msg_silent;
1708
1709 msg_silent = 0; /* must display the prompt */
1710 n = ask_yesno((char_u *)_("cannot yank; delete anyway"), TRUE);
1711 msg_silent = msg_silent_save;
1712 if (n != 'y')
1713 {
1714 EMSG(_(e_abort));
1715 return FAIL;
1716 }
1717 }
1718 }
1719
1720 #ifdef FEAT_VISUAL
1721 /*
1722 * block mode delete
1723 */
1724 if (oap->block_mode)
1725 {
1726 if (u_save((linenr_T)(oap->start.lnum - 1),
1727 (linenr_T)(oap->end.lnum + 1)) == FAIL)
1728 return FAIL;
1729
1730 for (lnum = curwin->w_cursor.lnum; lnum <= oap->end.lnum; ++lnum)
1731 {
1732 block_prep(oap, &bd, lnum, TRUE);
1733 if (bd.textlen == 0) /* nothing to delete */
1734 continue;
1735
1736 /* Adjust cursor position for tab replaced by spaces and 'lbr'. */
1737 if (lnum == curwin->w_cursor.lnum)
1738 {
1739 curwin->w_cursor.col = bd.textcol + bd.startspaces;
1740 # ifdef FEAT_VIRTUALEDIT
1741 curwin->w_cursor.coladd = 0;
1742 # endif
1743 }
1744
1745 /* n == number of chars deleted
1746 * If we delete a TAB, it may be replaced by several characters.
1747 * Thus the number of characters may increase!
1748 */
1749 n = bd.textlen - bd.startspaces - bd.endspaces;
1750 oldp = ml_get(lnum);
1751 newp = alloc_check((unsigned)STRLEN(oldp) + 1 - n);
1752 if (newp == NULL)
1753 continue;
1754 /* copy up to deleted part */
1755 mch_memmove(newp, oldp, (size_t)bd.textcol);
1756 /* insert spaces */
1757 copy_spaces(newp + bd.textcol,
1758 (size_t)(bd.startspaces + bd.endspaces));
1759 /* copy the part after the deleted part */
1760 oldp += bd.textcol + bd.textlen;
1761 mch_memmove(newp + bd.textcol + bd.startspaces + bd.endspaces,
1762 oldp, STRLEN(oldp) + 1);
1763 /* replace the line */
1764 ml_replace(lnum, newp, FALSE);
1765 }
1766
1767 check_cursor_col();
1768 changed_lines(curwin->w_cursor.lnum, curwin->w_cursor.col,
1769 oap->end.lnum + 1, 0L);
1770 oap->line_count = 0; /* no lines deleted */
1771 }
1772 else
1773 #endif
1774 if (oap->motion_type == MLINE)
1775 {
1776 if (oap->op_type == OP_CHANGE)
1777 {
1778 /* Delete the lines except the first one. Temporarily move the
1779 * cursor to the next line. Save the current line number, if the
1780 * last line is deleted it may be changed.
1781 */
1782 if (oap->line_count > 1)
1783 {
1784 lnum = curwin->w_cursor.lnum;
1785 ++curwin->w_cursor.lnum;
1786 del_lines((long)(oap->line_count - 1), TRUE);
1787 curwin->w_cursor.lnum = lnum;
1788 }
1789 if (u_save_cursor() == FAIL)
1790 return FAIL;
1791 if (curbuf->b_p_ai) /* don't delete indent */
1792 {
1793 beginline(BL_WHITE); /* cursor on first non-white */
1794 did_ai = TRUE; /* delete the indent when ESC hit */
1795 ai_col = curwin->w_cursor.col;
1796 }
1797 else
1798 beginline(0); /* cursor in column 0 */
1799 truncate_line(FALSE); /* delete the rest of the line */
1800 /* leave cursor past last char in line */
1801 if (oap->line_count > 1)
1802 u_clearline(); /* "U" command not possible after "2cc" */
1803 }
1804 else
1805 {
1806 del_lines(oap->line_count, TRUE);
1807 beginline(BL_WHITE | BL_FIX);
1808 u_clearline(); /* "U" command not possible after "dd" */
1809 }
1810 }
1811 else
1812 {
1813 #ifdef FEAT_VIRTUALEDIT
1814 if (virtual_op)
1815 {
1816 int endcol = 0;
1817
1818 /* For virtualedit: break the tabs that are partly included. */
1819 if (gchar_pos(&oap->start) == '\t')
1820 {
1821 if (u_save_cursor() == FAIL) /* save first line for undo */
1822 return FAIL;
1823 if (oap->line_count == 1)
1824 endcol = getviscol2(oap->end.col, oap->end.coladd);
1825 coladvance_force(getviscol2(oap->start.col, oap->start.coladd));
1826 oap->start = curwin->w_cursor;
1827 if (oap->line_count == 1)
1828 {
1829 coladvance(endcol);
1830 oap->end.col = curwin->w_cursor.col;
1831 oap->end.coladd = curwin->w_cursor.coladd;
1832 curwin->w_cursor = oap->start;
1833 }
1834 }
1835
1836 /* Break a tab only when it's included in the area. */
1837 if (gchar_pos(&oap->end) == '\t'
1838 && (int)oap->end.coladd < oap->inclusive)
1839 {
1840 /* save last line for undo */
1841 if (u_save((linenr_T)(oap->end.lnum - 1),
1842 (linenr_T)(oap->end.lnum + 1)) == FAIL)
1843 return FAIL;
1844 curwin->w_cursor = oap->end;
1845 coladvance_force(getviscol2(oap->end.col, oap->end.coladd));
1846 oap->end = curwin->w_cursor;
1847 curwin->w_cursor = oap->start;
1848 }
1849 }
1850 #endif
1851
1852 if (oap->line_count == 1) /* delete characters within one line */
1853 {
1854 if (u_save_cursor() == FAIL) /* save line for undo */
1855 return FAIL;
1856
1857 /* if 'cpoptions' contains '$', display '$' at end of change */
1858 if ( vim_strchr(p_cpo, CPO_DOLLAR) != NULL
1859 && oap->op_type == OP_CHANGE
1860 && oap->end.lnum == curwin->w_cursor.lnum
1861 #ifdef FEAT_VISUAL
1862 && !oap->is_VIsual
1863 #endif
1864 )
1865 display_dollar(oap->end.col - !oap->inclusive);
1866
1867 n = oap->end.col - oap->start.col + 1 - !oap->inclusive;
1868
1869 #ifdef FEAT_VIRTUALEDIT
1870 if (virtual_op)
1871 {
1872 /* fix up things for virtualedit-delete:
1873 * break the tabs which are going to get in our way
1874 */
1875 char_u *curline = ml_get_curline();
1876 int len = (int)STRLEN(curline);
1877
1878 if (oap->end.coladd != 0
1879 && (int)oap->end.col >= len - 1
1880 && !(oap->start.coladd && (int)oap->end.col >= len - 1))
1881 n++;
1882 /* Delete at least one char (e.g, when on a control char). */
1883 if (n == 0 && oap->start.coladd != oap->end.coladd)
1884 n = 1;
1885
1886 /* When deleted a char in the line, reset coladd. */
1887 if (gchar_cursor() != NUL)
1888 curwin->w_cursor.coladd = 0;
1889 }
1890 #endif
1891 (void)del_bytes((long)n, !virtual_op, oap->op_type == OP_DELETE
1892 #ifdef FEAT_VISUAL
1893 && !oap->is_VIsual
1894 #endif
1895 );
1896 }
1897 else /* delete characters between lines */
1898 {
1899 pos_T curpos;
1900
1901 /* save deleted and changed lines for undo */
1902 if (u_save((linenr_T)(curwin->w_cursor.lnum - 1),
1903 (linenr_T)(curwin->w_cursor.lnum + oap->line_count)) == FAIL)
1904 return FAIL;
1905
1906 truncate_line(TRUE); /* delete from cursor to end of line */
1907
1908 curpos = curwin->w_cursor; /* remember curwin->w_cursor */
1909 ++curwin->w_cursor.lnum;
1910 del_lines((long)(oap->line_count - 2), FALSE);
1911
1912 /* delete from start of line until op_end */
1913 curwin->w_cursor.col = 0;
1914 (void)del_bytes((long)(oap->end.col + 1 - !oap->inclusive),
1915 !virtual_op, oap->op_type == OP_DELETE
1916 #ifdef FEAT_VISUAL
1917 && !oap->is_VIsual
1918 #endif
1919 );
1920 curwin->w_cursor = curpos; /* restore curwin->w_cursor */
1921
1922 (void)do_join(FALSE);
1923 }
1924 }
1925
1926 msgmore(curbuf->b_ml.ml_line_count - old_lcount);
1927
1928 #ifdef FEAT_VIRTUALEDIT
1929 setmarks:
1930 #endif
1931 #ifdef FEAT_VISUAL
1932 if (oap->block_mode)
1933 {
1934 curbuf->b_op_end.lnum = oap->end.lnum;
1935 curbuf->b_op_end.col = oap->start.col;
1936 }
1937 else
1938 #endif
1939 curbuf->b_op_end = oap->start;
1940 curbuf->b_op_start = oap->start;
1941
1942 return OK;
1943 }
1944
1945 #ifdef FEAT_MBYTE
1946 /*
1947 * Adjust end of operating area for ending on a multi-byte character.
1948 * Used for deletion.
1949 */
1950 static void
1951 mb_adjust_opend(oap)
1952 oparg_T *oap;
1953 {
1954 char_u *p;
1955
1956 if (oap->inclusive)
1957 {
1958 p = ml_get(oap->end.lnum);
1959 oap->end.col += mb_tail_off(p, p + oap->end.col);
1960 }
1961 }
1962 #endif
1963
1964 #if defined(FEAT_VISUALEXTRA) || defined(PROTO)
1965 /*
1966 * Replace a whole area with one character.
1967 */
1968 int
1969 op_replace(oap, c)
1970 oparg_T *oap;
1971 int c;
1972 {
1973 int n, numc;
1974 #ifdef FEAT_MBYTE
1975 int num_chars;
1976 #endif
1977 char_u *newp, *oldp;
1978 size_t oldlen;
1979 struct block_def bd;
1980
1981 if ((curbuf->b_ml.ml_flags & ML_EMPTY ) || oap->empty)
1982 return OK; /* nothing to do */
1983
1984 #ifdef FEAT_MBYTE
1985 if (has_mbyte)
1986 mb_adjust_opend(oap);
1987 #endif
1988
1989 if (u_save((linenr_T)(oap->start.lnum - 1),
1990 (linenr_T)(oap->end.lnum + 1)) == FAIL)
1991 return FAIL;
1992
1993 /*
1994 * block mode replace
1995 */
1996 if (oap->block_mode)
1997 {
1998 bd.is_MAX = (curwin->w_curswant == MAXCOL);
1999 for ( ; curwin->w_cursor.lnum <= oap->end.lnum; ++curwin->w_cursor.lnum)
2000 {
2001 block_prep(oap, &bd, curwin->w_cursor.lnum, TRUE);
2002 if (bd.textlen == 0 && (!virtual_op || bd.is_MAX))
2003 continue; /* nothing to replace */
2004
2005 /* n == number of extra chars required
2006 * If we split a TAB, it may be replaced by several characters.
2007 * Thus the number of characters may increase!
2008 */
2009 #ifdef FEAT_VIRTUALEDIT
2010 /* If the range starts in virtual space, count the initial
2011 * coladd offset as part of "startspaces" */
2012 if (virtual_op && bd.is_short && *bd.textstart == NUL)
2013 {
2014 pos_T vpos;
2015
2016 getvpos(&vpos, oap->start_vcol);
2017 bd.startspaces += vpos.coladd;
2018 n = bd.startspaces;
2019 }
2020 else
2021 #endif
2022 /* allow for pre spaces */
2023 n = (bd.startspaces ? bd.start_char_vcols - 1 : 0);
2024
2025 /* allow for post spp */
2026 n += (bd.endspaces
2027 #ifdef FEAT_VIRTUALEDIT
2028 && !bd.is_oneChar
2029 #endif
2030 && bd.end_char_vcols > 0) ? bd.end_char_vcols - 1 : 0;
2031 /* Figure out how many characters to replace. */
2032 numc = oap->end_vcol - oap->start_vcol + 1;
2033 if (bd.is_short && (!virtual_op || bd.is_MAX))
2034 numc -= (oap->end_vcol - bd.end_vcol) + 1;
2035
2036 #ifdef FEAT_MBYTE
2037 /* A double-wide character can be replaced only up to half the
2038 * times. */
2039 if ((*mb_char2cells)(c) > 1)
2040 {
2041 if ((numc & 1) && !bd.is_short)
2042 {
2043 ++bd.endspaces;
2044 ++n;
2045 }
2046 numc = numc / 2;
2047 }
2048
2049 /* Compute bytes needed, move character count to num_chars. */
2050 num_chars = numc;
2051 numc *= (*mb_char2len)(c);
2052 #endif
2053 /* oldlen includes textlen, so don't double count */
2054 n += numc - bd.textlen;
2055
2056 oldp = ml_get_curline();
2057 oldlen = STRLEN(oldp);
2058 newp = alloc_check((unsigned)oldlen + 1 + n);
2059 if (newp == NULL)
2060 continue;
2061 vim_memset(newp, NUL, (size_t)(oldlen + 1 + n));
2062 /* copy up to deleted part */
2063 mch_memmove(newp, oldp, (size_t)bd.textcol);
2064 oldp += bd.textcol + bd.textlen;
2065 /* insert pre-spaces */
2066 copy_spaces(newp + bd.textcol, (size_t)bd.startspaces);
2067 /* insert replacement chars CHECK FOR ALLOCATED SPACE */
2068 #ifdef FEAT_MBYTE
2069 if (has_mbyte)
2070 {
2071 n = (int)STRLEN(newp);
2072 while (--num_chars >= 0)
2073 n += (*mb_char2bytes)(c, newp + n);
2074 }
2075 else
2076 #endif
2077 copy_chars(newp + STRLEN(newp), (size_t)numc, c);
2078 if (!bd.is_short)
2079 {
2080 /* insert post-spaces */
2081 copy_spaces(newp + STRLEN(newp), (size_t)bd.endspaces);
2082 /* copy the part after the changed part */
2083 mch_memmove(newp + STRLEN(newp), oldp, STRLEN(oldp) + 1);
2084 }
2085 /* replace the line */
2086 ml_replace(curwin->w_cursor.lnum, newp, FALSE);
2087 }
2088 }
2089 else
2090 {
2091 /*
2092 * MCHAR and MLINE motion replace.
2093 */
2094 if (oap->motion_type == MLINE)
2095 {
2096 oap->start.col = 0;
2097 curwin->w_cursor.col = 0;
2098 oap->end.col = (colnr_T)STRLEN(ml_get(oap->end.lnum));
2099 if (oap->end.col)
2100 --oap->end.col;
2101 }
2102 else if (!oap->inclusive)
2103 dec(&(oap->end));
2104
2105 while (ltoreq(curwin->w_cursor, oap->end))
2106 {
2107 n = gchar_cursor();
2108 if (n != NUL)
2109 {
2110 #ifdef FEAT_MBYTE
2111 if ((*mb_char2len)(c) > 1 || (*mb_char2len)(n) > 1)
2112 {
2113 /* This is slow, but it handles replacing a single-byte
2114 * with a multi-byte and the other way around. */
2115 oap->end.col += (*mb_char2len)(c) - (*mb_char2len)(n);
2116 n = State;
2117 State = REPLACE;
2118 ins_char(c);
2119 State = n;
2120 /* Backup to the replaced character. */
2121 dec_cursor();
2122 }
2123 else
2124 #endif
2125 {
2126 #ifdef FEAT_VIRTUALEDIT
2127 if (n == TAB)
2128 {
2129 int end_vcol = 0;
2130
2131 if (curwin->w_cursor.lnum == oap->end.lnum)
2132 {
2133 /* oap->end has to be recalculated when
2134 * the tab breaks */
2135 end_vcol = getviscol2(oap->end.col,
2136 oap->end.coladd);
2137 }
2138 coladvance_force(getviscol());
2139 if (curwin->w_cursor.lnum == oap->end.lnum)
2140 getvpos(&oap->end, end_vcol);
2141 }
2142 #endif
2143 pchar(curwin->w_cursor, c);
2144 }
2145 }
2146 #ifdef FEAT_VIRTUALEDIT
2147 else if (virtual_op && curwin->w_cursor.lnum == oap->end.lnum)
2148 {
2149 int virtcols = oap->end.coladd;
2150
2151 if (curwin->w_cursor.lnum == oap->start.lnum
2152 && oap->start.col == oap->end.col && oap->start.coladd)
2153 virtcols -= oap->start.coladd;
2154
2155 /* oap->end has been trimmed so it's effectively inclusive;
2156 * as a result an extra +1 must be counted so we don't
2157 * trample the NUL byte. */
2158 coladvance_force(getviscol2(oap->end.col, oap->end.coladd) + 1);
2159 curwin->w_cursor.col -= (virtcols + 1);
2160 for (; virtcols >= 0; virtcols--)
2161 {
2162 pchar(curwin->w_cursor, c);
2163 if (inc(&curwin->w_cursor) == -1)
2164 break;
2165 }
2166 }
2167 #endif
2168
2169 /* Advance to next character, stop at the end of the file. */
2170 if (inc_cursor() == -1)
2171 break;
2172 }
2173 }
2174
2175 curwin->w_cursor = oap->start;
2176 check_cursor();
2177 changed_lines(oap->start.lnum, oap->start.col, oap->end.lnum + 1, 0L);
2178
2179 /* Set "'[" and "']" marks. */
2180 curbuf->b_op_start = oap->start;
2181 curbuf->b_op_end = oap->end;
2182
2183 return OK;
2184 }
2185 #endif
2186
2187 static int swapchars __ARGS((int op_type, pos_T *pos, int length));
2188
2189 /*
2190 * Handle the (non-standard vi) tilde operator. Also for "gu", "gU" and "g?".
2191 */
2192 void
2193 op_tilde(oap)
2194 oparg_T *oap;
2195 {
2196 pos_T pos;
2197 #ifdef FEAT_VISUAL
2198 struct block_def bd;
2199 #endif
2200 int did_change;
2201
2202 if (u_save((linenr_T)(oap->start.lnum - 1),
2203 (linenr_T)(oap->end.lnum + 1)) == FAIL)
2204 return;
2205
2206 pos = oap->start;
2207 #ifdef FEAT_VISUAL
2208 if (oap->block_mode) /* Visual block mode */
2209 {
2210 for (; pos.lnum <= oap->end.lnum; ++pos.lnum)
2211 {
2212 block_prep(oap, &bd, pos.lnum, FALSE);
2213 pos.col = bd.textcol;
2214 did_change = swapchars(oap->op_type, &pos, bd.textlen);
2215
2216 # ifdef FEAT_NETBEANS_INTG
2217 if (usingNetbeans && did_change)
2218 {
2219 char_u *ptr = ml_get_buf(curbuf, pos.lnum, FALSE);
2220
2221 netbeans_removed(curbuf, pos.lnum, bd.textcol,
2222 (long)bd.textlen);
2223 netbeans_inserted(curbuf, pos.lnum, bd.textcol,
2224 &ptr[bd.textcol], bd.textlen);
2225 }
2226 # endif
2227 }
2228 if (did_change)
2229 changed_lines(oap->start.lnum, 0, oap->end.lnum + 1, 0L);
2230 }
2231 else /* not block mode */
2232 #endif
2233 {
2234 if (oap->motion_type == MLINE)
2235 {
2236 oap->start.col = 0;
2237 pos.col = 0;
2238 oap->end.col = (colnr_T)STRLEN(ml_get(oap->end.lnum));
2239 if (oap->end.col)
2240 --oap->end.col;
2241 }
2242 else if (!oap->inclusive)
2243 dec(&(oap->end));
2244
2245 did_change = swapchars(oap->op_type, &pos, oap->end.col - pos.col + 1);
2246 if (did_change)
2247 {
2248 changed_lines(oap->start.lnum, oap->start.col, oap->end.lnum + 1,
2249 0L);
2250 #ifdef FEAT_NETBEANS_INTG
2251 if (usingNetbeans && did_change)
2252 {
2253 char_u *ptr;
2254 int count;
2255
2256 pos = oap->start;
2257 while (pos.lnum < oap->end.lnum)
2258 {
2259 ptr = ml_get_buf(curbuf, pos.lnum, FALSE);
2260 count = (int)STRLEN(ptr) - pos.col;
2261 netbeans_removed(curbuf, pos.lnum, pos.col, (long)count);
2262 netbeans_inserted(curbuf, pos.lnum, pos.col,
2263 &ptr[pos.col], count);
2264 pos.col = 0;
2265 pos.lnum++;
2266 }
2267 ptr = ml_get_buf(curbuf, pos.lnum, FALSE);
2268 count = oap->end.col - pos.col + 1;
2269 netbeans_removed(curbuf, pos.lnum, pos.col, (long)count);
2270 netbeans_inserted(curbuf, pos.lnum, pos.col,
2271 &ptr[pos.col], count);
2272 }
2273 #endif
2274 }
2275 }
2276
2277 #ifdef FEAT_VISUAL
2278 if (!did_change && oap->is_VIsual)
2279 /* No change: need to remove the Visual selection */
2280 redraw_curbuf_later(INVERTED);
2281 #endif
2282
2283 /*
2284 * Set '[ and '] marks.
2285 */
2286 curbuf->b_op_start = oap->start;
2287 curbuf->b_op_end = oap->end;
2288
2289 if (oap->line_count > p_report)
2290 {
2291 if (oap->line_count == 1)
2292 MSG(_("1 line changed"));
2293 else
2294 smsg((char_u *)_("%ld lines changed"), oap->line_count);
2295 }
2296 }
2297
2298 /*
2299 * Invoke swapchar() on "length" bytes at position "pos".
2300 * "pos" is advanced to just after the changed characters.
2301 * "length" is rounded up to include the whole last multi-byte character.
2302 * Also works correctly when the number of bytes changes.
2303 * Returns TRUE if some character was changed.
2304 */
2305 static int
2306 swapchars(op_type, pos, length)
2307 int op_type;
2308 pos_T *pos;
2309 int length;
2310 {
2311 int todo;
2312 int did_change = 0;
2313
2314 for (todo = length; todo > 0; --todo)
2315 {
2316 # ifdef FEAT_MBYTE
2317 int pos_col = pos->col;
2318
2319 if (has_mbyte)
2320 /* we're counting bytes, not characters */
2321 todo -= (*mb_ptr2len)(ml_get_pos(pos)) - 1;
2322 # endif
2323 did_change |= swapchar(op_type, pos);
2324 # ifdef FEAT_MBYTE
2325 /* Changing German sharp s to SS increases the column. */
2326 todo += pos->col - pos_col;
2327 # endif
2328 if (inc(pos) == -1) /* at end of file */
2329 break;
2330 }
2331 return did_change;
2332 }
2333
2334 /*
2335 * If op_type == OP_UPPER: make uppercase,
2336 * if op_type == OP_LOWER: make lowercase,
2337 * if op_type == OP_ROT13: do rot13 encoding,
2338 * else swap case of character at 'pos'
2339 * returns TRUE when something actually changed.
2340 */
2341 int
2342 swapchar(op_type, pos)
2343 int op_type;
2344 pos_T *pos;
2345 {
2346 int c;
2347 int nc;
2348
2349 c = gchar_pos(pos);
2350
2351 /* Only do rot13 encoding for ASCII characters. */
2352 if (c >= 0x80 && op_type == OP_ROT13)
2353 return FALSE;
2354
2355 #ifdef FEAT_MBYTE
2356 if (op_type == OP_UPPER && c == 0xdf
2357 && (enc_latin1like || STRCMP(p_enc, "iso-8859-2") == 0))
2358 {
2359 pos_T sp = curwin->w_cursor;
2360
2361 /* Special handling of German sharp s: change to "SS". */
2362 curwin->w_cursor = *pos;
2363 del_char(FALSE);
2364 ins_char('S');
2365 ins_char('S');
2366 curwin->w_cursor = sp;
2367 inc(pos);
2368 }
2369
2370 if (enc_dbcs != 0 && c >= 0x100) /* No lower/uppercase letter */
2371 return FALSE;
2372 #endif
2373 nc = c;
2374 if (MB_ISLOWER(c))
2375 {
2376 if (op_type == OP_ROT13)
2377 nc = ROT13(c, 'a');
2378 else if (op_type != OP_LOWER)
2379 nc = MB_TOUPPER(c);
2380 }
2381 else if (MB_ISUPPER(c))
2382 {
2383 if (op_type == OP_ROT13)
2384 nc = ROT13(c, 'A');
2385 else if (op_type != OP_UPPER)
2386 nc = MB_TOLOWER(c);
2387 }
2388 if (nc != c)
2389 {
2390 #ifdef FEAT_MBYTE
2391 if (enc_utf8 && (c >= 0x80 || nc >= 0x80))
2392 {
2393 pos_T sp = curwin->w_cursor;
2394
2395 curwin->w_cursor = *pos;
2396 del_char(FALSE);
2397 ins_char(nc);
2398 curwin->w_cursor = sp;
2399 }
2400 else
2401 #endif
2402 pchar(*pos, nc);
2403 return TRUE;
2404 }
2405 return FALSE;
2406 }
2407
2408 #if defined(FEAT_VISUALEXTRA) || defined(PROTO)
2409 /*
2410 * op_insert - Insert and append operators for Visual mode.
2411 */
2412 void
2413 op_insert(oap, count1)
2414 oparg_T *oap;
2415 long count1;
2416 {
2417 long ins_len, pre_textlen = 0;
2418 char_u *firstline, *ins_text;
2419 struct block_def bd;
2420 int i;
2421
2422 /* edit() changes this - record it for OP_APPEND */
2423 bd.is_MAX = (curwin->w_curswant == MAXCOL);
2424
2425 /* vis block is still marked. Get rid of it now. */
2426 curwin->w_cursor.lnum = oap->start.lnum;
2427 update_screen(INVERTED);
2428
2429 if (oap->block_mode)
2430 {
2431 #ifdef FEAT_VIRTUALEDIT
2432 /* When 'virtualedit' is used, need to insert the extra spaces before
2433 * doing block_prep(). When only "block" is used, virtual edit is
2434 * already disabled, but still need it when calling
2435 * coladvance_force(). */
2436 if (curwin->w_cursor.coladd > 0)
2437 {
2438 int old_ve_flags = ve_flags;
2439
2440 ve_flags = VE_ALL;
2441 if (u_save_cursor() == FAIL)
2442 return;
2443 coladvance_force(oap->op_type == OP_APPEND
2444 ? oap->end_vcol + 1 : getviscol());
2445 if (oap->op_type == OP_APPEND)
2446 --curwin->w_cursor.col;
2447 ve_flags = old_ve_flags;
2448 }
2449 #endif
2450 /* Get the info about the block before entering the text */
2451 block_prep(oap, &bd, oap->start.lnum, TRUE);
2452 firstline = ml_get(oap->start.lnum) + bd.textcol;
2453 if (oap->op_type == OP_APPEND)
2454 firstline += bd.textlen;
2455 pre_textlen = (long)STRLEN(firstline);
2456 }
2457
2458 if (oap->op_type == OP_APPEND)
2459 {
2460 if (oap->block_mode
2461 #ifdef FEAT_VIRTUALEDIT
2462 && curwin->w_cursor.coladd == 0
2463 #endif
2464 )
2465 {
2466 /* Move the cursor to the character right of the block. */
2467 curwin->w_set_curswant = TRUE;
2468 while (*ml_get_cursor() != NUL
2469 && (curwin->w_cursor.col < bd.textcol + bd.textlen))
2470 ++curwin->w_cursor.col;
2471 if (bd.is_short && !bd.is_MAX)
2472 {
2473 /* First line was too short, make it longer and adjust the
2474 * values in "bd". */
2475 if (u_save_cursor() == FAIL)
2476 return;
2477 for (i = 0; i < bd.endspaces; ++i)
2478 ins_char(' ');
2479 bd.textlen += bd.endspaces;
2480 }
2481 }
2482 else
2483 {
2484 curwin->w_cursor = oap->end;
2485 check_cursor_col();
2486
2487 /* Works just like an 'i'nsert on the next character. */
2488 if (!lineempty(curwin->w_cursor.lnum)
2489 && oap->start_vcol != oap->end_vcol)
2490 inc_cursor();
2491 }
2492 }
2493
2494 edit(NUL, FALSE, (linenr_T)count1);
2495
2496 /* If user has moved off this line, we don't know what to do, so do
2497 * nothing.
2498 * Also don't repeat the insert when Insert mode ended with CTRL-C. */
2499 if (curwin->w_cursor.lnum != oap->start.lnum || got_int)
2500 return;
2501
2502 if (oap->block_mode)
2503 {
2504 struct block_def bd2;
2505
2506 /*
2507 * Spaces and tabs in the indent may have changed to other spaces and
2508 * tabs. Get the starting column again and correct the length.
2509 * Don't do this when "$" used, end-of-line will have changed.
2510 */
2511 block_prep(oap, &bd2, oap->start.lnum, TRUE);
2512 if (!bd.is_MAX || bd2.textlen < bd.textlen)
2513 {
2514 if (oap->op_type == OP_APPEND)
2515 {
2516 pre_textlen += bd2.textlen - bd.textlen;
2517 if (bd2.endspaces)
2518 --bd2.textlen;
2519 }
2520 bd.textcol = bd2.textcol;
2521 bd.textlen = bd2.textlen;
2522 }
2523
2524 /*
2525 * Subsequent calls to ml_get() flush the firstline data - take a
2526 * copy of the required string.
2527 */
2528 firstline = ml_get(oap->start.lnum) + bd.textcol;
2529 if (oap->op_type == OP_APPEND)
2530 firstline += bd.textlen;
2531 if ((ins_len = (long)STRLEN(firstline) - pre_textlen) > 0)
2532 {
2533 ins_text = vim_strnsave(firstline, (int)ins_len);
2534 if (ins_text != NULL)
2535 {
2536 /* block handled here */
2537 if (u_save(oap->start.lnum,
2538 (linenr_T)(oap->end.lnum + 1)) == OK)
2539 block_insert(oap, ins_text, (oap->op_type == OP_INSERT),
2540 &bd);
2541
2542 curwin->w_cursor.col = oap->start.col;
2543 check_cursor();
2544 vim_free(ins_text);
2545 }
2546 }
2547 }
2548 }
2549 #endif
2550
2551 /*
2552 * op_change - handle a change operation
2553 *
2554 * return TRUE if edit() returns because of a CTRL-O command
2555 */
2556 int
2557 op_change(oap)
2558 oparg_T *oap;
2559 {
2560 colnr_T l;
2561 int retval;
2562 #ifdef FEAT_VISUALEXTRA
2563 long offset;
2564 linenr_T linenr;
2565 long ins_len;
2566 long pre_textlen = 0;
2567 long pre_indent = 0;
2568 char_u *firstline;
2569 char_u *ins_text, *newp, *oldp;
2570 struct block_def bd;
2571 #endif
2572
2573 l = oap->start.col;
2574 if (oap->motion_type == MLINE)
2575 {
2576 l = 0;
2577 #ifdef FEAT_SMARTINDENT
2578 if (!p_paste && curbuf->b_p_si
2579 # ifdef FEAT_CINDENT
2580 && !curbuf->b_p_cin
2581 # endif
2582 )
2583 can_si = TRUE; /* It's like opening a new line, do si */
2584 #endif
2585 }
2586
2587 /* First delete the text in the region. In an empty buffer only need to
2588 * save for undo */
2589 if (curbuf->b_ml.ml_flags & ML_EMPTY)
2590 {
2591 if (u_save_cursor() == FAIL)
2592 return FALSE;
2593 }
2594 else if (op_delete(oap) == FAIL)
2595 return FALSE;
2596
2597 if ((l > curwin->w_cursor.col) && !lineempty(curwin->w_cursor.lnum)
2598 && !virtual_op)
2599 inc_cursor();
2600
2601 #ifdef FEAT_VISUALEXTRA
2602 /* check for still on same line (<CR> in inserted text meaningless) */
2603 /* skip blank lines too */
2604 if (oap->block_mode)
2605 {
2606 # ifdef FEAT_VIRTUALEDIT
2607 /* Add spaces before getting the current line length. */
2608 if (virtual_op && (curwin->w_cursor.coladd > 0
2609 || gchar_cursor() == NUL))
2610 coladvance_force(getviscol());
2611 # endif
2612 firstline = ml_get(oap->start.lnum);
2613 pre_textlen = (long)STRLEN(firstline);
2614 pre_indent = (long)(skipwhite(firstline) - firstline);
2615 bd.textcol = curwin->w_cursor.col;
2616 }
2617 #endif
2618
2619 #if defined(FEAT_LISP) || defined(FEAT_CINDENT)
2620 if (oap->motion_type == MLINE)
2621 fix_indent();
2622 #endif
2623
2624 retval = edit(NUL, FALSE, (linenr_T)1);
2625
2626 #ifdef FEAT_VISUALEXTRA
2627 /*
2628 * In Visual block mode, handle copying the new text to all lines of the
2629 * block.
2630 * Don't repeat the insert when Insert mode ended with CTRL-C.
2631 */
2632 if (oap->block_mode && oap->start.lnum != oap->end.lnum && !got_int)
2633 {
2634 /* Auto-indenting may have changed the indent. If the cursor was past
2635 * the indent, exclude that indent change from the inserted text. */
2636 firstline = ml_get(oap->start.lnum);
2637 if (bd.textcol > (colnr_T)pre_indent)
2638 {
2639 long new_indent = (long)(skipwhite(firstline) - firstline);
2640
2641 pre_textlen += new_indent - pre_indent;
2642 bd.textcol += new_indent - pre_indent;
2643 }
2644
2645 ins_len = (long)STRLEN(firstline) - pre_textlen;
2646 if (ins_len > 0)
2647 {
2648 /* Subsequent calls to ml_get() flush the firstline data - take a
2649 * copy of the inserted text. */
2650 if ((ins_text = alloc_check((unsigned)(ins_len + 1))) != NULL)
2651 {
2652 vim_strncpy(ins_text, firstline + bd.textcol, (size_t)ins_len);
2653 for (linenr = oap->start.lnum + 1; linenr <= oap->end.lnum;
2654 linenr++)
2655 {
2656 block_prep(oap, &bd, linenr, TRUE);
2657 if (!bd.is_short || virtual_op)
2658 {
2659 # ifdef FEAT_VIRTUALEDIT
2660 pos_T vpos;
2661
2662 /* If the block starts in virtual space, count the
2663 * initial coladd offset as part of "startspaces" */
2664 if (bd.is_short)
2665 {
2666 linenr_T lnum = curwin->w_cursor.lnum;
2667
2668 curwin->w_cursor.lnum = linenr;
2669 (void)getvpos(&vpos, oap->start_vcol);
2670 curwin->w_cursor.lnum = lnum;
2671 }
2672 else
2673 vpos.coladd = 0;
2674 # endif
2675 oldp = ml_get(linenr);
2676 newp = alloc_check((unsigned)(STRLEN(oldp)
2677 # ifdef FEAT_VIRTUALEDIT
2678 + vpos.coladd
2679 # endif
2680 + ins_len + 1));
2681 if (newp == NULL)
2682 continue;
2683 /* copy up to block start */
2684 mch_memmove(newp, oldp, (size_t)bd.textcol);
2685 offset = bd.textcol;
2686 # ifdef FEAT_VIRTUALEDIT
2687 copy_spaces(newp + offset, (size_t)vpos.coladd);
2688 offset += vpos.coladd;
2689 # endif
2690 mch_memmove(newp + offset, ins_text, (size_t)ins_len);
2691 offset += ins_len;
2692 oldp += bd.textcol;
2693 mch_memmove(newp + offset, oldp, STRLEN(oldp) + 1);
2694 ml_replace(linenr, newp, FALSE);
2695 }
2696 }
2697 check_cursor();
2698
2699 changed_lines(oap->start.lnum + 1, 0, oap->end.lnum + 1, 0L);
2700 }
2701 vim_free(ins_text);
2702 }
2703 }
2704 #endif
2705
2706 return retval;
2707 }
2708
2709 /*
2710 * set all the yank registers to empty (called from main())
2711 */
2712 void
2713 init_yank()
2714 {
2715 int i;
2716
2717 for (i = 0; i < NUM_REGISTERS; ++i)
2718 y_regs[i].y_array = NULL;
2719 }
2720
2721 #if defined(EXITFREE) || defined(PROTO)
2722 void
2723 clear_registers()
2724 {
2725 int i;
2726
2727 for (i = 0; i < NUM_REGISTERS; ++i)
2728 {
2729 y_current = &y_regs[i];
2730 if (y_current->y_array != NULL)
2731 free_yank_all();
2732 }
2733 }
2734 #endif
2735
2736 /*
2737 * Free "n" lines from the current yank register.
2738 * Called for normal freeing and in case of error.
2739 */
2740 static void
2741 free_yank(n)
2742 long n;
2743 {
2744 if (y_current->y_array != NULL)
2745 {
2746 long i;
2747
2748 for (i = n; --i >= 0; )
2749 {
2750 #ifdef AMIGA /* only for very slow machines */
2751 if ((i & 1023) == 1023) /* this may take a while */
2752 {
2753 /*
2754 * This message should never cause a hit-return message.
2755 * Overwrite this message with any next message.
2756 */
2757 ++no_wait_return;
2758 smsg((char_u *)_("freeing %ld lines"), i + 1);
2759 --no_wait_return;
2760 msg_didout = FALSE;
2761 msg_col = 0;
2762 }
2763 #endif
2764 vim_free(y_current->y_array[i]);
2765 }
2766 vim_free(y_current->y_array);
2767 y_current->y_array = NULL;
2768 #ifdef AMIGA
2769 if (n >= 1000)
2770 MSG("");
2771 #endif
2772 }
2773 }
2774
2775 static void
2776 free_yank_all()
2777 {
2778 free_yank(y_current->y_size);
2779 }
2780
2781 /*
2782 * Yank the text between "oap->start" and "oap->end" into a yank register.
2783 * If we are to append (uppercase register), we first yank into a new yank
2784 * register and then concatenate the old and the new one (so we keep the old
2785 * one in case of out-of-memory).
2786 *
2787 * return FAIL for failure, OK otherwise
2788 */
2789 int
2790 op_yank(oap, deleting, mess)
2791 oparg_T *oap;
2792 int deleting;
2793 int mess;
2794 {
2795 long y_idx; /* index in y_array[] */
2796 struct yankreg *curr; /* copy of y_current */
2797 struct yankreg newreg; /* new yank register when appending */
2798 char_u **new_ptr;
2799 linenr_T lnum; /* current line number */
2800 long j;
2801 int yanktype = oap->motion_type;
2802 long yanklines = oap->line_count;
2803 linenr_T yankendlnum = oap->end.lnum;
2804 char_u *p;
2805 char_u *pnew;
2806 struct block_def bd;
2807
2808 /* check for read-only register */
2809 if (oap->regname != 0 && !valid_yank_reg(oap->regname, TRUE))
2810 {
2811 beep_flush();
2812 return FAIL;
2813 }
2814 if (oap->regname == '_') /* black hole: nothing to do */
2815 return OK;
2816
2817 #ifdef FEAT_CLIPBOARD
2818 if (!clip_star.available && oap->regname == '*')
2819 oap->regname = 0;
2820 else if (!clip_plus.available && oap->regname == '+')
2821 oap->regname = 0;
2822 #endif
2823
2824 if (!deleting) /* op_delete() already set y_current */
2825 get_yank_register(oap->regname, TRUE);
2826
2827 curr = y_current;
2828 /* append to existing contents */
2829 if (y_append && y_current->y_array != NULL)
2830 y_current = &newreg;
2831 else
2832 free_yank_all(); /* free previously yanked lines */
2833
2834 /*
2835 * If the cursor was in column 1 before and after the movement, and the
2836 * operator is not inclusive, the yank is always linewise.
2837 */
2838 if ( oap->motion_type == MCHAR
2839 && oap->start.col == 0
2840 && !oap->inclusive
2841 #ifdef FEAT_VISUAL
2842 && (!oap->is_VIsual || *p_sel == 'o')
2843 && !oap->block_mode
2844 #endif
2845 && oap->end.col == 0
2846 && yanklines > 1)
2847 {
2848 yanktype = MLINE;
2849 --yankendlnum;
2850 --yanklines;
2851 }
2852
2853 y_current->y_size = yanklines;
2854 y_current->y_type = yanktype; /* set the yank register type */
2855 #ifdef FEAT_VISUAL
2856 y_current->y_width = 0;
2857 #endif
2858 y_current->y_array = (char_u **)lalloc_clear((long_u)(sizeof(char_u *) *
2859 yanklines), TRUE);
2860
2861 if (y_current->y_array == NULL)
2862 {
2863 y_current = curr;
2864 return FAIL;
2865 }
2866
2867 y_idx = 0;
2868 lnum = oap->start.lnum;
2869
2870 #ifdef FEAT_VISUAL
2871 if (oap->block_mode)
2872 {
2873 /* Visual block mode */
2874 y_current->y_type = MBLOCK; /* set the yank register type */
2875 y_current->y_width = oap->end_vcol - oap->start_vcol;
2876
2877 if (curwin->w_curswant == MAXCOL && y_current->y_width > 0)
2878 y_current->y_width--;
2879 }
2880 #endif
2881
2882 for ( ; lnum <= yankendlnum; lnum++, y_idx++)
2883 {
2884 switch (y_current->y_type)
2885 {
2886 #ifdef FEAT_VISUAL
2887 case MBLOCK:
2888 block_prep(oap, &bd, lnum, FALSE);
2889 if (yank_copy_line(&bd, y_idx) == FAIL)
2890 goto fail;
2891 break;
2892 #endif
2893
2894 case MLINE:
2895 if ((y_current->y_array[y_idx] =
2896 vim_strsave(ml_get(lnum))) == NULL)
2897 goto fail;
2898 break;
2899
2900 case MCHAR:
2901 {
2902 colnr_T startcol = 0, endcol = MAXCOL;
2903 #ifdef FEAT_VIRTUALEDIT
2904 int is_oneChar = FALSE;
2905 colnr_T cs, ce;
2906 #endif
2907 p = ml_get(lnum);
2908 bd.startspaces = 0;
2909 bd.endspaces = 0;
2910
2911 if (lnum == oap->start.lnum)
2912 {
2913 startcol = oap->start.col;
2914 #ifdef FEAT_VIRTUALEDIT
2915 if (virtual_op)
2916 {
2917 getvcol(curwin, &oap->start, &cs, NULL, &ce);
2918 if (ce != cs && oap->start.coladd > 0)
2919 {
2920 /* Part of a tab selected -- but don't
2921 * double-count it. */
2922 bd.startspaces = (ce - cs + 1)
2923 - oap->start.coladd;
2924 startcol++;
2925 }
2926 }
2927 #endif
2928 }
2929
2930 if (lnum == oap->end.lnum)
2931 {
2932 endcol = oap->end.col;
2933 #ifdef FEAT_VIRTUALEDIT
2934 if (virtual_op)
2935 {
2936 getvcol(curwin, &oap->end, &cs, NULL, &ce);
2937 if (p[endcol] == NUL || (cs + oap->end.coladd < ce
2938 # ifdef FEAT_MBYTE
2939 /* Don't add space for double-wide
2940 * char; endcol will be on last byte
2941 * of multi-byte char. */
2942 && (*mb_head_off)(p, p + endcol) == 0
2943 # endif
2944 ))
2945 {
2946 if (oap->start.lnum == oap->end.lnum
2947 && oap->start.col == oap->end.col)
2948 {
2949 /* Special case: inside a single char */
2950 is_oneChar = TRUE;
2951 bd.startspaces = oap->end.coladd
2952 - oap->start.coladd + oap->inclusive;
2953 endcol = startcol;
2954 }
2955 else
2956 {
2957 bd.endspaces = oap->end.coladd
2958 + oap->inclusive;
2959 endcol -= oap->inclusive;
2960 }
2961 }
2962 }
2963 #endif
2964 }
2965 if (startcol > endcol
2966 #ifdef FEAT_VIRTUALEDIT
2967 || is_oneChar
2968 #endif
2969 )
2970 bd.textlen = 0;
2971 else
2972 {
2973 if (endcol == MAXCOL)
2974 endcol = (colnr_T)STRLEN(p);
2975 bd.textlen = endcol - startcol + oap->inclusive;
2976 }
2977 bd.textstart = p + startcol;
2978 if (yank_copy_line(&bd, y_idx) == FAIL)
2979 goto fail;
2980 break;
2981 }
2982 /* NOTREACHED */
2983 }
2984 }
2985
2986 if (curr != y_current) /* append the new block to the old block */
2987 {
2988 new_ptr = (char_u **)lalloc((long_u)(sizeof(char_u *) *
2989 (curr->y_size + y_current->y_size)), TRUE);
2990 if (new_ptr == NULL)
2991 goto fail;
2992 for (j = 0; j < curr->y_size; ++j)
2993 new_ptr[j] = curr->y_array[j];
2994 vim_free(curr->y_array);
2995 curr->y_array = new_ptr;
2996
2997 if (yanktype == MLINE) /* MLINE overrides MCHAR and MBLOCK */
2998 curr->y_type = MLINE;
2999
3000 /* Concatenate the last line of the old block with the first line of
3001 * the new block, unless being Vi compatible. */
3002 if (curr->y_type == MCHAR && vim_strchr(p_cpo, CPO_REGAPPEND) == NULL)
3003 {
3004 pnew = lalloc((long_u)(STRLEN(curr->y_array[curr->y_size - 1])
3005 + STRLEN(y_current->y_array[0]) + 1), TRUE);
3006 if (pnew == NULL)
3007 {
3008 y_idx = y_current->y_size - 1;
3009 goto fail;
3010 }
3011 STRCPY(pnew, curr->y_array[--j]);
3012 STRCAT(pnew, y_current->y_array[0]);
3013 vim_free(curr->y_array[j]);
3014 vim_free(y_current->y_array[0]);
3015 curr->y_array[j++] = pnew;
3016 y_idx = 1;
3017 }
3018 else
3019 y_idx = 0;
3020 while (y_idx < y_current->y_size)
3021 curr->y_array[j++] = y_current->y_array[y_idx++];
3022 curr->y_size = j;
3023 vim_free(y_current->y_array);
3024 y_current = curr;
3025 }
3026 if (mess) /* Display message about yank? */
3027 {
3028 if (yanktype == MCHAR
3029 #ifdef FEAT_VISUAL
3030 && !oap->block_mode
3031 #endif
3032 && yanklines == 1)
3033 yanklines = 0;
3034 /* Some versions of Vi use ">=" here, some don't... */
3035 if (yanklines > p_report)
3036 {
3037 /* redisplay now, so message is not deleted */
3038 update_topline_redraw();
3039 if (yanklines == 1)
3040 {
3041 #ifdef FEAT_VISUAL
3042 if (oap->block_mode)
3043 MSG(_("block of 1 line yanked"));
3044 else
3045 #endif
3046 MSG(_("1 line yanked"));
3047 }
3048 #ifdef FEAT_VISUAL
3049 else if (oap->block_mode)
3050 smsg((char_u *)_("block of %ld lines yanked"), yanklines);
3051 #endif
3052 else
3053 smsg((char_u *)_("%ld lines yanked"), yanklines);
3054 }
3055 }
3056
3057 /*
3058 * Set "'[" and "']" marks.
3059 */
3060 curbuf->b_op_start = oap->start;
3061 curbuf->b_op_end = oap->end;
3062 if (yanktype == MLINE
3063 #ifdef FEAT_VISUAL
3064 && !oap->block_mode
3065 #endif
3066 )
3067 {
3068 curbuf->b_op_start.col = 0;
3069 curbuf->b_op_end.col = MAXCOL;
3070 }
3071
3072 #ifdef FEAT_CLIPBOARD
3073 /*
3074 * If we were yanking to the '*' register, send result to clipboard.
3075 * If no register was specified, and "unnamed" in 'clipboard', make a copy
3076 * to the '*' register.
3077 */
3078 if (clip_star.available
3079 && (curr == &(y_regs[STAR_REGISTER])
3080 || (!deleting && oap->regname == 0 && clip_unnamed)))
3081 {
3082 if (curr != &(y_regs[STAR_REGISTER]))
3083 /* Copy the text from register 0 to the clipboard register. */
3084 copy_yank_reg(&(y_regs[STAR_REGISTER]));
3085
3086 clip_own_selection(&clip_star);
3087 clip_gen_set_selection(&clip_star);
3088 }
3089
3090 # ifdef FEAT_X11
3091 /*
3092 * If we were yanking to the '+' register, send result to selection.
3093 * Also copy to the '*' register, in case auto-select is off.
3094 */
3095 else if (clip_plus.available && curr == &(y_regs[PLUS_REGISTER]))
3096 {
3097 /* No need to copy to * register upon 'unnamed' now - see below */
3098 clip_own_selection(&clip_plus);
3099 clip_gen_set_selection(&clip_plus);
3100 if (!clip_isautosel())
3101 {
3102 copy_yank_reg(&(y_regs[STAR_REGISTER]));
3103 clip_own_selection(&clip_star);
3104 clip_gen_set_selection(&clip_star);
3105 }
3106 }
3107 # endif
3108 #endif
3109
3110 return OK;
3111
3112 fail: /* free the allocated lines */
3113 free_yank(y_idx + 1);
3114 y_current = curr;
3115 return FAIL;
3116 }
3117
3118 static int
3119 yank_copy_line(bd, y_idx)
3120 struct block_def *bd;
3121 long y_idx;
3122 {
3123 char_u *pnew;
3124
3125 if ((pnew = alloc(bd->startspaces + bd->endspaces + bd->textlen + 1))
3126 == NULL)
3127 return FAIL;
3128 y_current->y_array[y_idx] = pnew;
3129 copy_spaces(pnew, (size_t)bd->startspaces);
3130 pnew += bd->startspaces;
3131 mch_memmove(pnew, bd->textstart, (size_t)bd->textlen);
3132 pnew += bd->textlen;
3133 copy_spaces(pnew, (size_t)bd->endspaces);
3134 pnew += bd->endspaces;
3135 *pnew = NUL;
3136 return OK;
3137 }
3138
3139 #ifdef FEAT_CLIPBOARD
3140 /*
3141 * Make a copy of the y_current register to register "reg".
3142 */
3143 static void
3144 copy_yank_reg(reg)
3145 struct yankreg *reg;
3146 {
3147 struct yankreg *curr = y_current;
3148 long j;
3149
3150 y_current = reg;
3151 free_yank_all();
3152 *y_current = *curr;
3153 y_current->y_array = (char_u **)lalloc_clear(
3154 (long_u)(sizeof(char_u *) * y_current->y_size), TRUE);
3155 if (y_current->y_array == NULL)
3156 y_current->y_size = 0;
3157 else
3158 for (j = 0; j < y_current->y_size; ++j)
3159 if ((y_current->y_array[j] = vim_strsave(curr->y_array[j])) == NULL)
3160 {
3161 free_yank(j);
3162 y_current->y_size = 0;
3163 break;
3164 }
3165 y_current = curr;
3166 }
3167 #endif
3168
3169 /*
3170 * Put contents of register "regname" into the text.
3171 * Caller must check "regname" to be valid!
3172 * "flags": PUT_FIXINDENT make indent look nice
3173 * PUT_CURSEND leave cursor after end of new text
3174 * PUT_LINE force linewise put (":put")
3175 */
3176 void
3177 do_put(regname, dir, count, flags)
3178 int regname;
3179 int dir; /* BACKWARD for 'P', FORWARD for 'p' */
3180 long count;
3181 int flags;
3182 {
3183 char_u *ptr;
3184 char_u *newp, *oldp;
3185 int yanklen;
3186 int totlen = 0; /* init for gcc */
3187 linenr_T lnum;
3188 colnr_T col;
3189 long i; /* index in y_array[] */
3190 int y_type;
3191 long y_size;
3192 #ifdef FEAT_VISUAL
3193 int oldlen;
3194 long y_width = 0;
3195 colnr_T vcol;
3196 int delcount;
3197 int incr = 0;
3198 long j;
3199 struct block_def bd;
3200 #endif
3201 char_u **y_array = NULL;
3202 long nr_lines = 0;
3203 pos_T new_cursor;
3204 int indent;
3205 int orig_indent = 0; /* init for gcc */
3206 int indent_diff = 0; /* init for gcc */
3207 int first_indent = TRUE;
3208 int lendiff = 0;
3209 pos_T old_pos;
3210 char_u *insert_string = NULL;
3211 int allocated = FALSE;
3212 long cnt;
3213
3214 #ifdef FEAT_CLIPBOARD
3215 /* Adjust register name for "unnamed" in 'clipboard'. */
3216 adjust_clip_reg(&regname);
3217 (void)may_get_selection(regname);
3218 #endif
3219
3220 if (flags & PUT_FIXINDENT)
3221 orig_indent = get_indent();
3222
3223 curbuf->b_op_start = curwin->w_cursor; /* default for '[ mark */
3224 curbuf->b_op_end = curwin->w_cursor; /* default for '] mark */
3225
3226 /*
3227 * Using inserted text works differently, because the register includes
3228 * special characters (newlines, etc.).
3229 */
3230 if (regname == '.')
3231 {
3232 (void)stuff_inserted((dir == FORWARD ? (count == -1 ? 'o' : 'a') :
3233 (count == -1 ? 'O' : 'i')), count, FALSE);
3234 /* Putting the text is done later, so can't really move the cursor to
3235 * the next character. Use "l" to simulate it. */
3236 if ((flags & PUT_CURSEND) && gchar_cursor() != NUL)
3237 stuffcharReadbuff('l');
3238 return;
3239 }
3240
3241 /*
3242 * For special registers '%' (file name), '#' (alternate file name) and
3243 * ':' (last command line), etc. we have to create a fake yank register.
3244 */
3245 if (get_spec_reg(regname, &insert_string, &allocated, TRUE))
3246 {
3247 if (insert_string == NULL)
3248 return;
3249 }
3250
3251 if (insert_string != NULL)
3252 {
3253 y_type = MCHAR;
3254 #ifdef FEAT_EVAL
3255 if (regname == '=')
3256 {
3257 /* For the = register we need to split the string at NL
3258 * characters. */
3259 /* Loop twice: count the number of lines and save them. */
3260 for (;;)
3261 {
3262 y_size = 0;
3263 ptr = insert_string;
3264 while (ptr != NULL)
3265 {
3266 if (y_array != NULL)
3267 y_array[y_size] = ptr;
3268 ++y_size;
3269 ptr = vim_strchr(ptr, '\n');
3270 if (ptr != NULL)
3271 {
3272 if (y_array != NULL)
3273 *ptr = NUL;
3274 ++ptr;
3275 /* A trailing '\n' makes the string linewise */
3276 if (*ptr == NUL)
3277 {
3278 y_type = MLINE;
3279 break;
3280 }
3281 }
3282 }
3283 if (y_array != NULL)
3284 break;
3285 y_array = (char_u **)alloc((unsigned)
3286 (y_size * sizeof(char_u *)));
3287 if (y_array == NULL)
3288 goto end;
3289 }
3290 }
3291 else
3292 #endif
3293 {
3294 y_size = 1; /* use fake one-line yank register */
3295 y_array = &insert_string;
3296 }
3297 }
3298 else
3299 {
3300 get_yank_register(regname, FALSE);
3301
3302 y_type = y_current->y_type;
3303 #ifdef FEAT_VISUAL
3304 y_width = y_current->y_width;
3305 #endif
3306 y_size = y_current->y_size;
3307 y_array = y_current->y_array;
3308 }
3309
3310 #ifdef FEAT_VISUAL
3311 if (y_type == MLINE)
3312 {
3313 if (flags & PUT_LINE_SPLIT)
3314 {
3315 /* "p" or "P" in Visual mode: split the lines to put the text in
3316 * between. */
3317 if (u_save_cursor() == FAIL)
3318 goto end;
3319 ptr = vim_strsave(ml_get_cursor());
3320 if (ptr == NULL)
3321 goto end;
3322 ml_append(curwin->w_cursor.lnum, ptr, (colnr_T)0, FALSE);
3323 vim_free(ptr);
3324
3325 ptr = vim_strnsave(ml_get_curline(), curwin->w_cursor.col);
3326 if (ptr == NULL)
3327 goto end;
3328 ml_replace(curwin->w_cursor.lnum, ptr, FALSE);
3329 ++nr_lines;
3330 dir = FORWARD;
3331 }
3332 if (flags & PUT_LINE_FORWARD)
3333 {
3334 /* Must be "p" for a Visual block, put lines below the block. */
3335 curwin->w_cursor = curbuf->b_visual.vi_end;
3336 dir = FORWARD;
3337 }
3338 curbuf->b_op_start = curwin->w_cursor; /* default for '[ mark */
3339 curbuf->b_op_end = curwin->w_cursor; /* default for '] mark */
3340 }
3341 #endif
3342
3343 if (flags & PUT_LINE) /* :put command or "p" in Visual line mode. */
3344 y_type = MLINE;
3345
3346 if (y_size == 0 || y_array == NULL)
3347 {
3348 EMSG2(_("E353: Nothing in register %s"),
3349 regname == 0 ? (char_u *)"\"" : transchar(regname));
3350 goto end;
3351 }
3352
3353 #ifdef FEAT_VISUAL
3354 if (y_type == MBLOCK)
3355 {
3356 lnum = curwin->w_cursor.lnum + y_size + 1;
3357 if (lnum > curbuf->b_ml.ml_line_count)
3358 lnum = curbuf->b_ml.ml_line_count + 1;
3359 if (u_save(curwin->w_cursor.lnum - 1, lnum) == FAIL)
3360 goto end;
3361 }
3362 else
3363 #endif
3364 if (y_type == MLINE)
3365 {
3366 lnum = curwin->w_cursor.lnum;
3367 #ifdef FEAT_FOLDING
3368 /* Correct line number for closed fold. Don't move the cursor yet,
3369 * u_save() uses it. */
3370 if (dir == BACKWARD)
3371 (void)hasFolding(lnum, &lnum, NULL);
3372 else
3373 (void)hasFolding(lnum, NULL, &lnum);
3374 #endif
3375 if (dir == FORWARD)
3376 ++lnum;
3377 if (u_save(lnum - 1, lnum) == FAIL)
3378 goto end;
3379 #ifdef FEAT_FOLDING
3380 if (dir == FORWARD)
3381 curwin->w_cursor.lnum = lnum - 1;
3382 else
3383 curwin->w_cursor.lnum = lnum;
3384 curbuf->b_op_start = curwin->w_cursor; /* for mark_adjust() */
3385 #endif
3386 }
3387 else if (u_save_cursor() == FAIL)
3388 goto end;
3389
3390 yanklen = (int)STRLEN(y_array[0]);
3391
3392 #ifdef FEAT_VIRTUALEDIT
3393 if (ve_flags == VE_ALL && y_type == MCHAR)
3394 {
3395 if (gchar_cursor() == TAB)
3396 {
3397 /* Don't need to insert spaces when "p" on the last position of a
3398 * tab or "P" on the first position. */
3399 if (dir == FORWARD
3400 ? (int)curwin->w_cursor.coladd < curbuf->b_p_ts - 1
3401 : curwin->w_cursor.coladd > 0)
3402 coladvance_force(getviscol());
3403 else
3404 curwin->w_cursor.coladd = 0;
3405 }
3406 else if (curwin->w_cursor.coladd > 0 || gchar_cursor() == NUL)
3407 coladvance_force(getviscol() + (dir == FORWARD));
3408 }
3409 #endif
3410
3411 lnum = curwin->w_cursor.lnum;
3412 col = curwin->w_cursor.col;
3413
3414 #ifdef FEAT_VISUAL
3415 /*
3416 * Block mode
3417 */
3418 if (y_type == MBLOCK)
3419 {
3420 char c = gchar_cursor();
3421 colnr_T endcol2 = 0;
3422
3423 if (dir == FORWARD && c != NUL)
3424 {
3425 #ifdef FEAT_VIRTUALEDIT
3426 if (ve_flags == VE_ALL)
3427 getvcol(curwin, &curwin->w_cursor, &col, NULL, &endcol2);
3428 else
3429 #endif
3430 getvcol(curwin, &curwin->w_cursor, NULL, NULL, &col);
3431
3432 #ifdef FEAT_MBYTE
3433 if (has_mbyte)
3434 /* move to start of next multi-byte character */
3435 curwin->w_cursor.col += (*mb_ptr2len)(ml_get_cursor());
3436 else
3437 #endif
3438 #ifdef FEAT_VIRTUALEDIT
3439 if (c != TAB || ve_flags != VE_ALL)
3440 #endif
3441 ++curwin->w_cursor.col;
3442 ++col;
3443 }
3444 else
3445 getvcol(curwin, &curwin->w_cursor, &col, NULL, &endcol2);
3446
3447 #ifdef FEAT_VIRTUALEDIT
3448 col += curwin->w_cursor.coladd;
3449 if (ve_flags == VE_ALL
3450 && (curwin->w_cursor.coladd > 0
3451 || endcol2 == curwin->w_cursor.col))
3452 {
3453 if (dir == FORWARD && c == NUL)
3454 ++col;
3455 if (dir != FORWARD && c != NUL)
3456 ++curwin->w_cursor.col;
3457 if (c == TAB)
3458 {
3459 if (dir == BACKWARD && curwin->w_cursor.col)
3460 curwin->w_cursor.col--;
3461 if (dir == FORWARD && col - 1 == endcol2)
3462 curwin->w_cursor.col++;
3463 }
3464 }
3465 curwin->w_cursor.coladd = 0;
3466 #endif
3467 bd.textcol = 0;
3468 for (i = 0; i < y_size; ++i)
3469 {
3470 int spaces;
3471 char shortline;
3472
3473 bd.startspaces = 0;
3474 bd.endspaces = 0;
3475 vcol = 0;
3476 delcount = 0;
3477
3478 /* add a new line */
3479 if (curwin->w_cursor.lnum > curbuf->b_ml.ml_line_count)
3480 {
3481 if (ml_append(curbuf->b_ml.ml_line_count, (char_u *)"",
3482 (colnr_T)1, FALSE) == FAIL)
3483 break;
3484 ++nr_lines;
3485 }
3486 /* get the old line and advance to the position to insert at */
3487 oldp = ml_get_curline();
3488 oldlen = (int)STRLEN(oldp);
3489 for (ptr = oldp; vcol < col && *ptr; )
3490 {
3491 /* Count a tab for what it's worth (if list mode not on) */
3492 incr = lbr_chartabsize_adv(&ptr, (colnr_T)vcol);
3493 vcol += incr;
3494 }
3495 bd.textcol = (colnr_T)(ptr - oldp);
3496
3497 shortline = (vcol < col) || (vcol == col && !*ptr) ;
3498
3499 if (vcol < col) /* line too short, padd with spaces */
3500 bd.startspaces = col - vcol;
3501 else if (vcol > col)
3502 {
3503 bd.endspaces = vcol - col;
3504 bd.startspaces = incr - bd.endspaces;
3505 --bd.textcol;
3506 delcount = 1;
3507 #ifdef FEAT_MBYTE
3508 if (has_mbyte)
3509 bd.textcol -= (*mb_head_off)(oldp, oldp + bd.textcol);
3510 #endif
3511 if (oldp[bd.textcol] != TAB)
3512 {
3513 /* Only a Tab can be split into spaces. Other
3514 * characters will have to be moved to after the
3515 * block, causing misalignment. */
3516 delcount = 0;
3517 bd.endspaces = 0;
3518 }
3519 }
3520
3521 yanklen = (int)STRLEN(y_array[i]);
3522
3523 /* calculate number of spaces required to fill right side of block*/
3524 spaces = y_width + 1;
3525 for (j = 0; j < yanklen; j++)
3526 spaces -= lbr_chartabsize(&y_array[i][j], 0);
3527 if (spaces < 0)
3528 spaces = 0;
3529
3530 /* insert the new text */
3531 totlen = count * (yanklen + spaces) + bd.startspaces + bd.endspaces;
3532 newp = alloc_check((unsigned)totlen + oldlen + 1);
3533 if (newp == NULL)
3534 break;
3535 /* copy part up to cursor to new line */
3536 ptr = newp;
3537 mch_memmove(ptr, oldp, (size_t)bd.textcol);
3538 ptr += bd.textcol;
3539 /* may insert some spaces before the new text */
3540 copy_spaces(ptr, (size_t)bd.startspaces);
3541 ptr += bd.startspaces;
3542 /* insert the new text */
3543 for (j = 0; j < count; ++j)
3544 {
3545 mch_memmove(ptr, y_array[i], (size_t)yanklen);
3546 ptr += yanklen;
3547
3548 /* insert block's trailing spaces only if there's text behind */
3549 if ((j < count - 1 || !shortline) && spaces)
3550 {
3551 copy_spaces(ptr, (size_t)spaces);
3552 ptr += spaces;
3553 }
3554 }
3555 /* may insert some spaces after the new text */
3556 copy_spaces(ptr, (size_t)bd.endspaces);
3557 ptr += bd.endspaces;
3558 /* move the text after the cursor to the end of the line. */
3559 mch_memmove(ptr, oldp + bd.textcol + delcount,
3560 (size_t)(oldlen - bd.textcol - delcount + 1));
3561 ml_replace(curwin->w_cursor.lnum, newp, FALSE);
3562
3563 ++curwin->w_cursor.lnum;
3564 if (i == 0)
3565 curwin->w_cursor.col += bd.startspaces;
3566 }
3567
3568 changed_lines(lnum, 0, curwin->w_cursor.lnum, nr_lines);
3569
3570 /* Set '[ mark. */
3571 curbuf->b_op_start = curwin->w_cursor;
3572 curbuf->b_op_start.lnum = lnum;
3573
3574 /* adjust '] mark */
3575 curbuf->b_op_end.lnum = curwin->w_cursor.lnum - 1;
3576 curbuf->b_op_end.col = bd.textcol + totlen - 1;
3577 # ifdef FEAT_VIRTUALEDIT
3578 curbuf->b_op_end.coladd = 0;
3579 # endif
3580 if (flags & PUT_CURSEND)
3581 {
3582 colnr_T len;
3583
3584 curwin->w_cursor = curbuf->b_op_end;
3585 curwin->w_cursor.col++;
3586
3587 /* in Insert mode we might be after the NUL, correct for that */
3588 len = (colnr_T)STRLEN(ml_get_curline());
3589 if (curwin->w_cursor.col > len)
3590 curwin->w_cursor.col = len;
3591 }
3592 else
3593 curwin->w_cursor.lnum = lnum;
3594 }
3595 else
3596 #endif
3597 {
3598 /*
3599 * Character or Line mode
3600 */
3601 if (y_type == MCHAR)
3602 {
3603 /* if type is MCHAR, FORWARD is the same as BACKWARD on the next
3604 * char */
3605 if (dir == FORWARD && gchar_cursor() != NUL)
3606 {
3607 #ifdef FEAT_MBYTE
3608 if (has_mbyte)
3609 {
3610 int bytelen = (*mb_ptr2len)(ml_get_cursor());
3611
3612 /* put it on the next of the multi-byte character. */
3613 col += bytelen;
3614 if (yanklen)
3615 {
3616 curwin->w_cursor.col += bytelen;
3617 curbuf->b_op_end.col += bytelen;
3618 }
3619 }
3620 else
3621 #endif
3622 {
3623 ++col;
3624 if (yanklen)
3625 {
3626 ++curwin->w_cursor.col;
3627 ++curbuf->b_op_end.col;
3628 }
3629 }
3630 }
3631 curbuf->b_op_start = curwin->w_cursor;
3632 }
3633 /*
3634 * Line mode: BACKWARD is the same as FORWARD on the previous line
3635 */
3636 else if (dir == BACKWARD)
3637 --lnum;
3638 new_cursor = curwin->w_cursor;
3639
3640 /*
3641 * simple case: insert into current line
3642 */
3643 if (y_type == MCHAR && y_size == 1)
3644 {
3645 totlen = count * yanklen;
3646 if (totlen)
3647 {
3648 oldp = ml_get(lnum);
3649 newp = alloc_check((unsigned)(STRLEN(oldp) + totlen + 1));
3650 if (newp == NULL)
3651 goto end; /* alloc() will give error message */
3652 mch_memmove(newp, oldp, (size_t)col);
3653 ptr = newp + col;
3654 for (i = 0; i < count; ++i)
3655 {
3656 mch_memmove(ptr, y_array[0], (size_t)yanklen);
3657 ptr += yanklen;
3658 }
3659 mch_memmove(ptr, oldp + col, STRLEN(oldp + col) + 1);
3660 ml_replace(lnum, newp, FALSE);
3661 /* Put cursor on last putted char. */
3662 curwin->w_cursor.col += (colnr_T)(totlen - 1);
3663 }
3664 curbuf->b_op_end = curwin->w_cursor;
3665 /* For "CTRL-O p" in Insert mode, put cursor after last char */
3666 if (totlen && (restart_edit != 0 || (flags & PUT_CURSEND)))
3667 ++curwin->w_cursor.col;
3668 changed_bytes(lnum, col);
3669 }
3670 else
3671 {
3672 /*
3673 * Insert at least one line. When y_type is MCHAR, break the first
3674 * line in two.
3675 */
3676 for (cnt = 1; cnt <= count; ++cnt)
3677 {
3678 i = 0;
3679 if (y_type == MCHAR)
3680 {
3681 /*
3682 * Split the current line in two at the insert position.
3683 * First insert y_array[size - 1] in front of second line.
3684 * Then append y_array[0] to first line.
3685 */
3686 lnum = new_cursor.lnum;
3687 ptr = ml_get(lnum) + col;
3688 totlen = (int)STRLEN(y_array[y_size - 1]);
3689 newp = alloc_check((unsigned)(STRLEN(ptr) + totlen + 1));
3690 if (newp == NULL)
3691 goto error;
3692 STRCPY(newp, y_array[y_size - 1]);
3693 STRCAT(newp, ptr);
3694 /* insert second line */
3695 ml_append(lnum, newp, (colnr_T)0, FALSE);
3696 vim_free(newp);
3697
3698 oldp = ml_get(lnum);
3699 newp = alloc_check((unsigned)(col + yanklen + 1));
3700 if (newp == NULL)
3701 goto error;
3702 /* copy first part of line */
3703 mch_memmove(newp, oldp, (size_t)col);
3704 /* append to first line */
3705 mch_memmove(newp + col, y_array[0], (size_t)(yanklen + 1));
3706 ml_replace(lnum, newp, FALSE);
3707
3708 curwin->w_cursor.lnum = lnum;
3709 i = 1;
3710 }
3711
3712 for (; i < y_size; ++i)
3713 {
3714 if ((y_type != MCHAR || i < y_size - 1)
3715 && ml_append(lnum, y_array[i], (colnr_T)0, FALSE)
3716 == FAIL)
3717 goto error;
3718 lnum++;
3719 ++nr_lines;
3720 if (flags & PUT_FIXINDENT)
3721 {
3722 old_pos = curwin->w_cursor;
3723 curwin->w_cursor.lnum = lnum;
3724 ptr = ml_get(lnum);
3725 if (cnt == count && i == y_size - 1)
3726 lendiff = (int)STRLEN(ptr);
3727 #if defined(FEAT_SMARTINDENT) || defined(FEAT_CINDENT)
3728 if (*ptr == '#' && preprocs_left())
3729 indent = 0; /* Leave # lines at start */
3730 else
3731 #endif
3732 if (*ptr == NUL)
3733 indent = 0; /* Ignore empty lines */
3734 else if (first_indent)
3735 {
3736 indent_diff = orig_indent - get_indent();
3737 indent = orig_indent;
3738 first_indent = FALSE;
3739 }
3740 else if ((indent = get_indent() + indent_diff) < 0)
3741 indent = 0;
3742 (void)set_indent(indent, 0);
3743 curwin->w_cursor = old_pos;
3744 /* remember how many chars were removed */
3745 if (cnt == count && i == y_size - 1)
3746 lendiff -= (int)STRLEN(ml_get(lnum));
3747 }
3748 }
3749 }
3750
3751 error:
3752 /* Adjust marks. */
3753 if (y_type == MLINE)
3754 {
3755 curbuf->b_op_start.col = 0;
3756 if (dir == FORWARD)
3757 curbuf->b_op_start.lnum++;
3758 }
3759 mark_adjust(curbuf->b_op_start.lnum + (y_type == MCHAR),
3760 (linenr_T)MAXLNUM, nr_lines, 0L);
3761
3762 /* note changed text for displaying and folding */
3763 if (y_type == MCHAR)
3764 changed_lines(curwin->w_cursor.lnum, col,
3765 curwin->w_cursor.lnum + 1, nr_lines);
3766 else
3767 changed_lines(curbuf->b_op_start.lnum, 0,
3768 curbuf->b_op_start.lnum, nr_lines);
3769
3770 /* put '] mark at last inserted character */
3771 curbuf->b_op_end.lnum = lnum;
3772 /* correct length for change in indent */
3773 col = (colnr_T)STRLEN(y_array[y_size - 1]) - lendiff;
3774 if (col > 1)
3775 curbuf->b_op_end.col = col - 1;
3776 else
3777 curbuf->b_op_end.col = 0;
3778
3779 if (flags & PUT_CURSLINE)
3780 {
3781 /* ":put": put cursor on last inserted line */
3782 curwin->w_cursor.lnum = lnum;
3783 beginline(BL_WHITE | BL_FIX);
3784 }
3785 else if (flags & PUT_CURSEND)
3786 {
3787 /* put cursor after inserted text */
3788 if (y_type == MLINE)
3789 {
3790 if (lnum >= curbuf->b_ml.ml_line_count)
3791 curwin->w_cursor.lnum = curbuf->b_ml.ml_line_count;
3792 else
3793 curwin->w_cursor.lnum = lnum + 1;
3794 curwin->w_cursor.col = 0;
3795 }
3796 else
3797 {
3798 curwin->w_cursor.lnum = lnum;
3799 curwin->w_cursor.col = col;
3800 }
3801 }
3802 else if (y_type == MLINE)
3803 {
3804 /* put cursor on first non-blank in first inserted line */
3805 curwin->w_cursor.col = 0;
3806 if (dir == FORWARD)
3807 ++curwin->w_cursor.lnum;
3808 beginline(BL_WHITE | BL_FIX);
3809 }
3810 else /* put cursor on first inserted character */
3811 curwin->w_cursor = new_cursor;
3812 }
3813 }
3814
3815 msgmore(nr_lines);
3816 curwin->w_set_curswant = TRUE;
3817
3818 end:
3819 if (allocated)
3820 vim_free(insert_string);
3821 if (regname == '=')
3822 vim_free(y_array);
3823
3824 /* If the cursor is past the end of the line put it at the end. */
3825 adjust_cursor_eol();
3826 }
3827
3828 /*
3829 * When the cursor is on the NUL past the end of the line and it should not be
3830 * there move it left.
3831 */
3832 void
3833 adjust_cursor_eol()
3834 {
3835 if (curwin->w_cursor.col > 0
3836 && gchar_cursor() == NUL
3837 #ifdef FEAT_VIRTUALEDIT
3838 && (ve_flags & VE_ONEMORE) == 0
3839 #endif
3840 && !(restart_edit || (State & INSERT)))
3841 {
3842 /* Put the cursor on the last character in the line. */
3843 dec_cursor();
3844
3845 #ifdef FEAT_VIRTUALEDIT
3846 if (ve_flags == VE_ALL)
3847 {
3848 colnr_T scol, ecol;
3849
3850 /* Coladd is set to the width of the last character. */
3851 getvcol(curwin, &curwin->w_cursor, &scol, NULL, &ecol);
3852 curwin->w_cursor.coladd = ecol - scol + 1;
3853 }
3854 #endif
3855 }
3856 }
3857
3858 #if defined(FEAT_SMARTINDENT) || defined(FEAT_CINDENT) || defined(PROTO)
3859 /*
3860 * Return TRUE if lines starting with '#' should be left aligned.
3861 */
3862 int
3863 preprocs_left()
3864 {
3865 return
3866 # ifdef FEAT_SMARTINDENT
3867 # ifdef FEAT_CINDENT
3868 (curbuf->b_p_si && !curbuf->b_p_cin) ||
3869 # else
3870 curbuf->b_p_si
3871 # endif
3872 # endif
3873 # ifdef FEAT_CINDENT
3874 (curbuf->b_p_cin && in_cinkeys('#', ' ', TRUE))
3875 # endif
3876 ;
3877 }
3878 #endif
3879
3880 /* Return the character name of the register with the given number */
3881 int
3882 get_register_name(num)
3883 int num;
3884 {
3885 if (num == -1)
3886 return '"';
3887 else if (num < 10)
3888 return num + '0';
3889 else if (num == DELETION_REGISTER)
3890 return '-';
3891 #ifdef FEAT_CLIPBOARD
3892 else if (num == STAR_REGISTER)
3893 return '*';
3894 else if (num == PLUS_REGISTER)
3895 return '+';
3896 #endif
3897 else
3898 {
3899 #ifdef EBCDIC
3900 int i;
3901
3902 /* EBCDIC is really braindead ... */
3903 i = 'a' + (num - 10);
3904 if (i > 'i')
3905 i += 7;
3906 if (i > 'r')
3907 i += 8;
3908 return i;
3909 #else
3910 return num + 'a' - 10;
3911 #endif
3912 }
3913 }
3914
3915 /*
3916 * ":dis" and ":registers": Display the contents of the yank registers.
3917 */
3918 void
3919 ex_display(eap)
3920 exarg_T *eap;
3921 {
3922 int i, n;
3923 long j;
3924 char_u *p;
3925 struct yankreg *yb;
3926 int name;
3927 int attr;
3928 char_u *arg = eap->arg;
3929 #ifdef FEAT_MBYTE
3930 int clen;
3931 #else
3932 # define clen 1
3933 #endif
3934
3935 if (arg != NULL && *arg == NUL)
3936 arg = NULL;
3937 attr = hl_attr(HLF_8);
3938
3939 /* Highlight title */
3940 MSG_PUTS_TITLE(_("\n--- Registers ---"));
3941 for (i = -1; i < NUM_REGISTERS && !got_int; ++i)
3942 {
3943 name = get_register_name(i);
3944 if (arg != NULL && vim_strchr(arg, name) == NULL)
3945 continue; /* did not ask for this register */
3946
3947 #ifdef FEAT_CLIPBOARD
3948 /* Adjust register name for "unnamed" in 'clipboard'.
3949 * When it's a clipboard register, fill it with the current contents
3950 * of the clipboard. */
3951 adjust_clip_reg(&name);
3952 (void)may_get_selection(name);
3953 #endif
3954
3955 if (i == -1)
3956 {
3957 if (y_previous != NULL)
3958 yb = y_previous;
3959 else
3960 yb = &(y_regs[0]);
3961 }
3962 else
3963 yb = &(y_regs[i]);
3964 if (yb->y_array != NULL)
3965 {
3966 msg_putchar('\n');
3967 msg_putchar('"');
3968 msg_putchar(name);
3969 MSG_PUTS(" ");
3970
3971 n = (int)Columns - 6;
3972 for (j = 0; j < yb->y_size && n > 1; ++j)
3973 {
3974 if (j)
3975 {
3976 MSG_PUTS_ATTR("^J", attr);
3977 n -= 2;
3978 }
3979 for (p = yb->y_array[j]; *p && (n -= ptr2cells(p)) >= 0; ++p)
3980 {
3981 #ifdef FEAT_MBYTE
3982 clen = (*mb_ptr2len)(p);
3983 #endif
3984 msg_outtrans_len(p, clen);
3985 #ifdef FEAT_MBYTE
3986 p += clen - 1;
3987 #endif
3988 }
3989 }
3990 if (n > 1 && yb->y_type == MLINE)
3991 MSG_PUTS_ATTR("^J", attr);
3992 out_flush(); /* show one line at a time */
3993 }
3994 ui_breakcheck();
3995 }
3996
3997 /*
3998 * display last inserted text
3999 */
4000 if ((p = get_last_insert()) != NULL
4001 && (arg == NULL || vim_strchr(arg, '.') != NULL) && !got_int)
4002 {
4003 MSG_PUTS("\n\". ");
4004 dis_msg(p, TRUE);
4005 }
4006
4007 /*
4008 * display last command line
4009 */
4010 if (last_cmdline != NULL && (arg == NULL || vim_strchr(arg, ':') != NULL)
4011 && !got_int)
4012 {
4013 MSG_PUTS("\n\": ");
4014 dis_msg(last_cmdline, FALSE);
4015 }
4016
4017 /*
4018 * display current file name
4019 */
4020 if (curbuf->b_fname != NULL
4021 && (arg == NULL || vim_strchr(arg, '%') != NULL) && !got_int)
4022 {
4023 MSG_PUTS("\n\"% ");
4024 dis_msg(curbuf->b_fname, FALSE);
4025 }
4026
4027 /*
4028 * display alternate file name
4029 */
4030 if ((arg == NULL || vim_strchr(arg, '%') != NULL) && !got_int)
4031 {
4032 char_u *fname;
4033 linenr_T dummy;
4034
4035 if (buflist_name_nr(0, &fname, &dummy) != FAIL)
4036 {
4037 MSG_PUTS("\n\"# ");
4038 dis_msg(fname, FALSE);
4039 }
4040 }
4041
4042 /*
4043 * display last search pattern
4044 */
4045 if (last_search_pat() != NULL
4046 && (arg == NULL || vim_strchr(arg, '/') != NULL) && !got_int)
4047 {
4048 MSG_PUTS("\n\"/ ");
4049 dis_msg(last_search_pat(), FALSE);
4050 }
4051
4052 #ifdef FEAT_EVAL
4053 /*
4054 * display last used expression
4055 */
4056 if (expr_line != NULL && (arg == NULL || vim_strchr(arg, '=') != NULL)
4057 && !got_int)
4058 {
4059 MSG_PUTS("\n\"= ");
4060 dis_msg(expr_line, FALSE);
4061 }
4062 #endif
4063 }
4064
4065 /*
4066 * display a string for do_dis()
4067 * truncate at end of screen line
4068 */
4069 static void
4070 dis_msg(p, skip_esc)
4071 char_u *p;
4072 int skip_esc; /* if TRUE, ignore trailing ESC */
4073 {
4074 int n;
4075 #ifdef FEAT_MBYTE
4076 int l;
4077 #endif
4078
4079 n = (int)Columns - 6;
4080 while (*p != NUL
4081 && !(*p == ESC && skip_esc && *(p + 1) == NUL)
4082 && (n -= ptr2cells(p)) >= 0)
4083 {
4084 #ifdef FEAT_MBYTE
4085 if (has_mbyte && (l = (*mb_ptr2len)(p)) > 1)
4086 {
4087 msg_outtrans_len(p, l);
4088 p += l;
4089 }
4090 else
4091 #endif
4092 msg_outtrans_len(p++, 1);
4093 }
4094 ui_breakcheck();
4095 }
4096
4097 /*
4098 * join 'count' lines (minimal 2), including u_save()
4099 */
4100 void
4101 do_do_join(count, insert_space)
4102 long count;
4103 int insert_space;
4104 {
4105 colnr_T col = MAXCOL;
4106
4107 if (u_save((linenr_T)(curwin->w_cursor.lnum - 1),
4108 (linenr_T)(curwin->w_cursor.lnum + count)) == FAIL)
4109 return;
4110
4111 while (--count > 0)
4112 {
4113 line_breakcheck();
4114 if (got_int || do_join(insert_space) == FAIL)
4115 {
4116 beep_flush();
4117 break;
4118 }
4119 if (col == MAXCOL && vim_strchr(p_cpo, CPO_JOINCOL) != NULL)
4120 col = curwin->w_cursor.col;
4121 }
4122
4123 /* Vi compatible: use the column of the first join */
4124 if (col != MAXCOL && vim_strchr(p_cpo, CPO_JOINCOL) != NULL)
4125 curwin->w_cursor.col = col;
4126
4127 #if 0
4128 /*
4129 * Need to update the screen if the line where the cursor is became too
4130 * long to fit on the screen.
4131 */
4132 update_topline_redraw();
4133 #endif
4134 }
4135
4136 /*
4137 * Join two lines at the cursor position.
4138 * "redraw" is TRUE when the screen should be updated.
4139 * Caller must have setup for undo.
4140 *
4141 * return FAIL for failure, OK otherwise
4142 */
4143 int
4144 do_join(insert_space)
4145 int insert_space;
4146 {
4147 char_u *curr;
4148 char_u *next, *next_start;
4149 char_u *newp;
4150 int endcurr1, endcurr2;
4151 int currsize; /* size of the current line */
4152 int nextsize; /* size of the next line */
4153 int spaces; /* number of spaces to insert */
4154 linenr_T t;
4155
4156 if (curwin->w_cursor.lnum == curbuf->b_ml.ml_line_count)
4157 return FAIL; /* can't join on last line */
4158
4159 curr = ml_get_curline();
4160 currsize = (int)STRLEN(curr);
4161 endcurr1 = endcurr2 = NUL;
4162 if (insert_space && currsize > 0)
4163 {
4164 #ifdef FEAT_MBYTE
4165 if (has_mbyte)
4166 {
4167 next = curr + currsize;
4168 mb_ptr_back(curr, next);
4169 endcurr1 = (*mb_ptr2char)(next);
4170 if (next > curr)
4171 {
4172 mb_ptr_back(curr, next);
4173 endcurr2 = (*mb_ptr2char)(next);
4174 }
4175 }
4176 else
4177 #endif
4178 {
4179 endcurr1 = *(curr + currsize - 1);
4180 if (currsize > 1)
4181 endcurr2 = *(curr + currsize - 2);
4182 }
4183 }
4184
4185 next = next_start = ml_get((linenr_T)(curwin->w_cursor.lnum + 1));
4186 spaces = 0;
4187 if (insert_space)
4188 {
4189 next = skipwhite(next);
4190 if (*next != ')' && currsize != 0 && endcurr1 != TAB
4191 #ifdef FEAT_MBYTE
4192 && (!has_format_option(FO_MBYTE_JOIN)
4193 || (mb_ptr2char(next) < 0x100 && endcurr1 < 0x100))
4194 && (!has_format_option(FO_MBYTE_JOIN2)
4195 || mb_ptr2char(next) < 0x100 || endcurr1 < 0x100)
4196 #endif
4197 )
4198 {
4199 /* don't add a space if the line is ending in a space */
4200 if (endcurr1 == ' ')
4201 endcurr1 = endcurr2;
4202 else
4203 ++spaces;
4204 /* extra space when 'joinspaces' set and line ends in '.' */
4205 if ( p_js
4206 && (endcurr1 == '.'
4207 || (vim_strchr(p_cpo, CPO_JOINSP) == NULL
4208 && (endcurr1 == '?' || endcurr1 == '!'))))
4209 ++spaces;
4210 }
4211 }
4212 nextsize = (int)STRLEN(next);
4213
4214 newp = alloc_check((unsigned)(currsize + nextsize + spaces + 1));
4215 if (newp == NULL)
4216 return FAIL;
4217
4218 /*
4219 * Insert the next line first, because we already have that pointer.
4220 * Curr has to be obtained again, because getting next will have
4221 * invalidated it.
4222 */
4223 mch_memmove(newp + currsize + spaces, next, (size_t)(nextsize + 1));
4224
4225 curr = ml_get_curline();
4226 mch_memmove(newp, curr, (size_t)currsize);
4227
4228 copy_spaces(newp + currsize, (size_t)spaces);
4229
4230 ml_replace(curwin->w_cursor.lnum, newp, FALSE);
4231
4232 /* Only report the change in the first line here, del_lines() will report
4233 * the deleted line. */
4234 changed_lines(curwin->w_cursor.lnum, currsize,
4235 curwin->w_cursor.lnum + 1, 0L);
4236
4237 /*
4238 * Delete the following line. To do this we move the cursor there
4239 * briefly, and then move it back. After del_lines() the cursor may
4240 * have moved up (last line deleted), so the current lnum is kept in t.
4241 *
4242 * Move marks from the deleted line to the joined line, adjusting the
4243 * column. This is not Vi compatible, but Vi deletes the marks, thus that
4244 * should not really be a problem.
4245 */
4246 t = curwin->w_cursor.lnum;
4247 mark_col_adjust(t + 1, (colnr_T)0, (linenr_T)-1,
4248 (long)(currsize + spaces - (next - next_start)));
4249 ++curwin->w_cursor.lnum;
4250 del_lines(1L, FALSE);
4251 curwin->w_cursor.lnum = t;
4252
4253 /*
4254 * go to first character of the joined line
4255 */
4256 curwin->w_cursor.col = currsize;
4257 check_cursor_col();
4258 #ifdef FEAT_VIRTUALEDIT
4259 curwin->w_cursor.coladd = 0;
4260 #endif
4261 curwin->w_set_curswant = TRUE;
4262
4263 return OK;
4264 }
4265
4266 #ifdef FEAT_COMMENTS
4267 /*
4268 * Return TRUE if the two comment leaders given are the same. "lnum" is
4269 * the first line. White-space is ignored. Note that the whole of
4270 * 'leader1' must match 'leader2_len' characters from 'leader2' -- webb
4271 */
4272 static int
4273 same_leader(lnum, leader1_len, leader1_flags, leader2_len, leader2_flags)
4274 linenr_T lnum;
4275 int leader1_len;
4276 char_u *leader1_flags;
4277 int leader2_len;
4278 char_u *leader2_flags;
4279 {
4280 int idx1 = 0, idx2 = 0;
4281 char_u *p;
4282 char_u *line1;
4283 char_u *line2;
4284
4285 if (leader1_len == 0)
4286 return (leader2_len == 0);
4287
4288 /*
4289 * If first leader has 'f' flag, the lines can be joined only if the
4290 * second line does not have a leader.
4291 * If first leader has 'e' flag, the lines can never be joined.
4292 * If fist leader has 's' flag, the lines can only be joined if there is
4293 * some text after it and the second line has the 'm' flag.
4294 */
4295 if (leader1_flags != NULL)
4296 {
4297 for (p = leader1_flags; *p && *p != ':'; ++p)
4298 {
4299 if (*p == COM_FIRST)
4300 return (leader2_len == 0);
4301 if (*p == COM_END)
4302 return FALSE;
4303 if (*p == COM_START)
4304 {
4305 if (*(ml_get(lnum) + leader1_len) == NUL)
4306 return FALSE;
4307 if (leader2_flags == NULL || leader2_len == 0)
4308 return FALSE;
4309 for (p = leader2_flags; *p && *p != ':'; ++p)
4310 if (*p == COM_MIDDLE)
4311 return TRUE;
4312 return FALSE;
4313 }
4314 }
4315 }
4316
4317 /*
4318 * Get current line and next line, compare the leaders.
4319 * The first line has to be saved, only one line can be locked at a time.
4320 */
4321 line1 = vim_strsave(ml_get(lnum));
4322 if (line1 != NULL)
4323 {
4324 for (idx1 = 0; vim_iswhite(line1[idx1]); ++idx1)
4325 ;
4326 line2 = ml_get(lnum + 1);
4327 for (idx2 = 0; idx2 < leader2_len; ++idx2)
4328 {
4329 if (!vim_iswhite(line2[idx2]))
4330 {
4331 if (line1[idx1++] != line2[idx2])
4332 break;
4333 }
4334 else
4335 while (vim_iswhite(line1[idx1]))
4336 ++idx1;
4337 }
4338 vim_free(line1);
4339 }
4340 return (idx2 == leader2_len && idx1 == leader1_len);
4341 }
4342 #endif
4343
4344 /*
4345 * implementation of the format operator 'gq'
4346 */
4347 void
4348 op_format(oap, keep_cursor)
4349 oparg_T *oap;
4350 int keep_cursor; /* keep cursor on same text char */
4351 {
4352 long old_line_count = curbuf->b_ml.ml_line_count;
4353
4354 /* Place the cursor where the "gq" or "gw" command was given, so that "u"
4355 * can put it back there. */
4356 curwin->w_cursor = oap->cursor_start;
4357
4358 if (u_save((linenr_T)(oap->start.lnum - 1),
4359 (linenr_T)(oap->end.lnum + 1)) == FAIL)
4360 return;
4361 curwin->w_cursor = oap->start;
4362
4363 #ifdef FEAT_VISUAL
4364 if (oap->is_VIsual)
4365 /* When there is no change: need to remove the Visual selection */
4366 redraw_curbuf_later(INVERTED);
4367 #endif
4368
4369 /* Set '[ mark at the start of the formatted area */
4370 curbuf->b_op_start = oap->start;
4371
4372 /* For "gw" remember the cursor position and put it back below (adjusted
4373 * for joined and split lines). */
4374 if (keep_cursor)
4375 saved_cursor = oap->cursor_start;
4376
4377 format_lines(oap->line_count);
4378
4379 /*
4380 * Leave the cursor at the first non-blank of the last formatted line.
4381 * If the cursor was moved one line back (e.g. with "Q}") go to the next
4382 * line, so "." will do the next lines.
4383 */
4384 if (oap->end_adjusted && curwin->w_cursor.lnum < curbuf->b_ml.ml_line_count)
4385 ++curwin->w_cursor.lnum;
4386 beginline(BL_WHITE | BL_FIX);
4387 old_line_count = curbuf->b_ml.ml_line_count - old_line_count;
4388 msgmore(old_line_count);
4389
4390 /* put '] mark on the end of the formatted area */
4391 curbuf->b_op_end = curwin->w_cursor;
4392
4393 if (keep_cursor)
4394 {
4395 curwin->w_cursor = saved_cursor;
4396 saved_cursor.lnum = 0;
4397 }
4398
4399 #ifdef FEAT_VISUAL
4400 if (oap->is_VIsual)
4401 {
4402 win_T *wp;
4403
4404 FOR_ALL_WINDOWS(wp)
4405 {
4406 if (wp->w_old_cursor_lnum != 0)
4407 {
4408 /* When lines have been inserted or deleted, adjust the end of
4409 * the Visual area to be redrawn. */
4410 if (wp->w_old_cursor_lnum > wp->w_old_visual_lnum)
4411 wp->w_old_cursor_lnum += old_line_count;
4412 else
4413 wp->w_old_visual_lnum += old_line_count;
4414 }
4415 }
4416 }
4417 #endif
4418 }
4419
4420 #if defined(FEAT_EVAL) || defined(PROTO)
4421 /*
4422 * Implementation of the format operator 'gq' for when using 'formatexpr'.
4423 */
4424 void
4425 op_formatexpr(oap)
4426 oparg_T *oap;
4427 {
4428 # ifdef FEAT_VISUAL
4429 if (oap->is_VIsual)
4430 /* When there is no change: need to remove the Visual selection */
4431 redraw_curbuf_later(INVERTED);
4432 # endif
4433
4434 (void)fex_format(oap->start.lnum, oap->line_count, NUL);
4435 }
4436
4437 int
4438 fex_format(lnum, count, c)
4439 linenr_T lnum;
4440 long count;
4441 int c; /* character to be inserted */
4442 {
4443 int use_sandbox = was_set_insecurely((char_u *)"formatexpr",
4444 OPT_LOCAL);
4445 int r;
4446 #ifdef FEAT_MBYTE
4447 char_u buf[MB_MAXBYTES];
4448 #else
4449 char_u buf[2];
4450 #endif
4451
4452 /*
4453 * Set v:lnum to the first line number and v:count to the number of lines.
4454 * Set v:char to the character to be inserted (can be NUL).
4455 */
4456 set_vim_var_nr(VV_LNUM, lnum);
4457 set_vim_var_nr(VV_COUNT, count);
4458
4459 #ifdef FEAT_MBYTE
4460 if (has_mbyte)
4461 buf[(*mb_char2bytes)(c, buf)] = NUL;
4462 else
4463 #endif
4464 {
4465 buf[0] = c;
4466 buf[1] = NUL;
4467 }
4468 set_vim_var_string(VV_CHAR, buf, -1);
4469
4470 /*
4471 * Evaluate the function.
4472 */
4473 if (use_sandbox)
4474 ++sandbox;
4475 r = eval_to_number(curbuf->b_p_fex);
4476 if (use_sandbox)
4477 --sandbox;
4478
4479 set_vim_var_string(VV_CHAR, NULL, -1);
4480
4481 return r;
4482 }
4483 #endif
4484
4485 /*
4486 * Format "line_count" lines, starting at the cursor position.
4487 * When "line_count" is negative, format until the end of the paragraph.
4488 * Lines after the cursor line are saved for undo, caller must have saved the
4489 * first line.
4490 */
4491 void
4492 format_lines(line_count)
4493 linenr_T line_count;
4494 {
4495 int max_len;
4496 int is_not_par; /* current line not part of parag. */
4497 int next_is_not_par; /* next line not part of paragraph */
4498 int is_end_par; /* at end of paragraph */
4499 int prev_is_end_par = FALSE;/* prev. line not part of parag. */
4500 int next_is_start_par = FALSE;
4501 #ifdef FEAT_COMMENTS
4502 int leader_len = 0; /* leader len of current line */
4503 int next_leader_len; /* leader len of next line */
4504 char_u *leader_flags = NULL; /* flags for leader of current line */
4505 char_u *next_leader_flags; /* flags for leader of next line */
4506 int do_comments; /* format comments */
4507 #endif
4508 int advance = TRUE;
4509 int second_indent = -1;
4510 int do_second_indent;
4511 int do_number_indent;
4512 int do_trail_white;
4513 int first_par_line = TRUE;
4514 int smd_save;
4515 long count;
4516 int need_set_indent = TRUE; /* set indent of next paragraph */
4517 int force_format = FALSE;
4518 int old_State = State;
4519
4520 /* length of a line to force formatting: 3 * 'tw' */
4521 max_len = comp_textwidth(TRUE) * 3;
4522
4523 /* check for 'q', '2' and '1' in 'formatoptions' */
4524 #ifdef FEAT_COMMENTS
4525 do_comments = has_format_option(FO_Q_COMS);
4526 #endif
4527 do_second_indent = has_format_option(FO_Q_SECOND);
4528 do_number_indent = has_format_option(FO_Q_NUMBER);
4529 do_trail_white = has_format_option(FO_WHITE_PAR);
4530
4531 /*
4532 * Get info about the previous and current line.
4533 */
4534 if (curwin->w_cursor.lnum > 1)
4535 is_not_par = fmt_check_par(curwin->w_cursor.lnum - 1
4536 #ifdef FEAT_COMMENTS
4537 , &leader_len, &leader_flags, do_comments
4538 #endif
4539 );
4540 else
4541 is_not_par = TRUE;
4542 next_is_not_par = fmt_check_par(curwin->w_cursor.lnum
4543 #ifdef FEAT_COMMENTS
4544 , &next_leader_len, &next_leader_flags, do_comments
4545 #endif
4546 );
4547 is_end_par = (is_not_par || next_is_not_par);
4548 if (!is_end_par && do_trail_white)
4549 is_end_par = !ends_in_white(curwin->w_cursor.lnum - 1);
4550
4551 curwin->w_cursor.lnum--;
4552 for (count = line_count; count != 0 && !got_int; --count)
4553 {
4554 /*
4555 * Advance to next paragraph.
4556 */
4557 if (advance)
4558 {
4559 curwin->w_cursor.lnum++;
4560 prev_is_end_par = is_end_par;
4561 is_not_par = next_is_not_par;
4562 #ifdef FEAT_COMMENTS
4563 leader_len = next_leader_len;
4564 leader_flags = next_leader_flags;
4565 #endif
4566 }
4567
4568 /*
4569 * The last line to be formatted.
4570 */
4571 if (count == 1 || curwin->w_cursor.lnum == curbuf->b_ml.ml_line_count)
4572 {
4573 next_is_not_par = TRUE;
4574 #ifdef FEAT_COMMENTS
4575 next_leader_len = 0;
4576 next_leader_flags = NULL;
4577 #endif
4578 }
4579 else
4580 {
4581 next_is_not_par = fmt_check_par(curwin->w_cursor.lnum + 1
4582 #ifdef FEAT_COMMENTS
4583 , &next_leader_len, &next_leader_flags, do_comments
4584 #endif
4585 );
4586 if (do_number_indent)
4587 next_is_start_par =
4588 (get_number_indent(curwin->w_cursor.lnum + 1) > 0);
4589 }
4590 advance = TRUE;
4591 is_end_par = (is_not_par || next_is_not_par || next_is_start_par);
4592 if (!is_end_par && do_trail_white)
4593 is_end_par = !ends_in_white(curwin->w_cursor.lnum);
4594
4595 /*
4596 * Skip lines that are not in a paragraph.
4597 */
4598 if (is_not_par)
4599 {
4600 if (line_count < 0)
4601 break;
4602 }
4603 else
4604 {
4605 /*
4606 * For the first line of a paragraph, check indent of second line.
4607 * Don't do this for comments and empty lines.
4608 */
4609 if (first_par_line
4610 && (do_second_indent || do_number_indent)
4611 && prev_is_end_par
4612 && curwin->w_cursor.lnum < curbuf->b_ml.ml_line_count
4613 #ifdef FEAT_COMMENTS
4614 && leader_len == 0
4615 && next_leader_len == 0
4616 #endif
4617 )
4618 {
4619 if (do_second_indent
4620 && !lineempty(curwin->w_cursor.lnum + 1))
4621 second_indent = get_indent_lnum(curwin->w_cursor.lnum + 1);
4622 else if (do_number_indent)
4623 second_indent = get_number_indent(curwin->w_cursor.lnum);
4624 }
4625
4626 /*
4627 * When the comment leader changes, it's the end of the paragraph.
4628 */
4629 if (curwin->w_cursor.lnum >= curbuf->b_ml.ml_line_count
4630 #ifdef FEAT_COMMENTS
4631 || !same_leader(curwin->w_cursor.lnum,
4632 leader_len, leader_flags,
4633 next_leader_len, next_leader_flags)
4634 #endif
4635 )
4636 is_end_par = TRUE;
4637
4638 /*
4639 * If we have got to the end of a paragraph, or the line is
4640 * getting long, format it.
4641 */
4642 if (is_end_par || force_format)
4643 {
4644 if (need_set_indent)
4645 /* replace indent in first line with minimal number of
4646 * tabs and spaces, according to current options */
4647 (void)set_indent(get_indent(), SIN_CHANGED);
4648
4649 /* put cursor on last non-space */
4650 State = NORMAL; /* don't go past end-of-line */
4651 coladvance((colnr_T)MAXCOL);
4652 while (curwin->w_cursor.col && vim_isspace(gchar_cursor()))
4653 dec_cursor();
4654
4655 /* do the formatting, without 'showmode' */
4656 State = INSERT; /* for open_line() */
4657 smd_save = p_smd;
4658 p_smd = FALSE;
4659 insertchar(NUL, INSCHAR_FORMAT
4660 #ifdef FEAT_COMMENTS
4661 + (do_comments ? INSCHAR_DO_COM : 0)
4662 #endif
4663 , second_indent);
4664 State = old_State;
4665 p_smd = smd_save;
4666 second_indent = -1;
4667 /* at end of par.: need to set indent of next par. */
4668 need_set_indent = is_end_par;
4669 if (is_end_par)
4670 {
4671 /* When called with a negative line count, break at the
4672 * end of the paragraph. */
4673 if (line_count < 0)
4674 break;
4675 first_par_line = TRUE;
4676 }
4677 force_format = FALSE;
4678 }
4679
4680 /*
4681 * When still in same paragraph, join the lines together. But
4682 * first delete the comment leader from the second line.
4683 */
4684 if (!is_end_par)
4685 {
4686 advance = FALSE;
4687 curwin->w_cursor.lnum++;
4688 curwin->w_cursor.col = 0;
4689 if (line_count < 0 && u_save_cursor() == FAIL)
4690 break;
4691 #ifdef FEAT_COMMENTS
4692 (void)del_bytes((long)next_leader_len, FALSE, FALSE);
4693 if (next_leader_len > 0)
4694 mark_col_adjust(curwin->w_cursor.lnum, (colnr_T)0, 0L,
4695 (long)-next_leader_len);
4696 #endif
4697 curwin->w_cursor.lnum--;
4698 if (do_join(TRUE) == FAIL)
4699 {
4700 beep_flush();
4701 break;
4702 }
4703 first_par_line = FALSE;
4704 /* If the line is getting long, format it next time */
4705 if (STRLEN(ml_get_curline()) > (size_t)max_len)
4706 force_format = TRUE;
4707 else
4708 force_format = FALSE;
4709 }
4710 }
4711 line_breakcheck();
4712 }
4713 }
4714
4715 /*
4716 * Return TRUE if line "lnum" ends in a white character.
4717 */
4718 static int
4719 ends_in_white(lnum)
4720 linenr_T lnum;
4721 {
4722 char_u *s = ml_get(lnum);
4723 size_t l;
4724
4725 if (*s == NUL)
4726 return FALSE;
4727 /* Don't use STRLEN() inside vim_iswhite(), SAS/C complains: "macro
4728 * invocation may call function multiple times". */
4729 l = STRLEN(s) - 1;
4730 return vim_iswhite(s[l]);
4731 }
4732
4733 /*
4734 * Blank lines, and lines containing only the comment leader, are left
4735 * untouched by the formatting. The function returns TRUE in this
4736 * case. It also returns TRUE when a line starts with the end of a comment
4737 * ('e' in comment flags), so that this line is skipped, and not joined to the
4738 * previous line. A new paragraph starts after a blank line, or when the
4739 * comment leader changes -- webb.
4740 */
4741 #ifdef FEAT_COMMENTS
4742 static int
4743 fmt_check_par(lnum, leader_len, leader_flags, do_comments)
4744 linenr_T lnum;
4745 int *leader_len;
4746 char_u **leader_flags;
4747 int do_comments;
4748 {
4749 char_u *flags = NULL; /* init for GCC */
4750 char_u *ptr;
4751
4752 ptr = ml_get(lnum);
4753 if (do_comments)
4754 *leader_len = get_leader_len(ptr, leader_flags, FALSE);
4755 else
4756 *leader_len = 0;
4757
4758 if (*leader_len > 0)
4759 {
4760 /*
4761 * Search for 'e' flag in comment leader flags.
4762 */
4763 flags = *leader_flags;
4764 while (*flags && *flags != ':' && *flags != COM_END)
4765 ++flags;
4766 }
4767
4768 return (*skipwhite(ptr + *leader_len) == NUL
4769 || (*leader_len > 0 && *flags == COM_END)
4770 || startPS(lnum, NUL, FALSE));
4771 }
4772 #else
4773 static int
4774 fmt_check_par(lnum)
4775 linenr_T lnum;
4776 {
4777 return (*skipwhite(ml_get(lnum)) == NUL || startPS(lnum, NUL, FALSE));
4778 }
4779 #endif
4780
4781 /*
4782 * Return TRUE when a paragraph starts in line "lnum". Return FALSE when the
4783 * previous line is in the same paragraph. Used for auto-formatting.
4784 */
4785 int
4786 paragraph_start(lnum)
4787 linenr_T lnum;
4788 {
4789 char_u *p;
4790 #ifdef FEAT_COMMENTS
4791 int leader_len = 0; /* leader len of current line */
4792 char_u *leader_flags = NULL; /* flags for leader of current line */
4793 int next_leader_len; /* leader len of next line */
4794 char_u *next_leader_flags; /* flags for leader of next line */
4795 int do_comments; /* format comments */
4796 #endif
4797
4798 if (lnum <= 1)
4799 return TRUE; /* start of the file */
4800
4801 p = ml_get(lnum - 1);
4802 if (*p == NUL)
4803 return TRUE; /* after empty line */
4804
4805 #ifdef FEAT_COMMENTS
4806 do_comments = has_format_option(FO_Q_COMS);
4807 #endif
4808 if (fmt_check_par(lnum - 1
4809 #ifdef FEAT_COMMENTS
4810 , &leader_len, &leader_flags, do_comments
4811 #endif
4812 ))
4813 return TRUE; /* after non-paragraph line */
4814
4815 if (fmt_check_par(lnum
4816 #ifdef FEAT_COMMENTS
4817 , &next_leader_len, &next_leader_flags, do_comments
4818 #endif
4819 ))
4820 return TRUE; /* "lnum" is not a paragraph line */
4821
4822 if (has_format_option(FO_WHITE_PAR) && !ends_in_white(lnum - 1))
4823 return TRUE; /* missing trailing space in previous line. */
4824
4825 if (has_format_option(FO_Q_NUMBER) && (get_number_indent(lnum) > 0))
4826 return TRUE; /* numbered item starts in "lnum". */
4827
4828 #ifdef FEAT_COMMENTS
4829 if (!same_leader(lnum - 1, leader_len, leader_flags,
4830 next_leader_len, next_leader_flags))
4831 return TRUE; /* change of comment leader. */
4832 #endif
4833
4834 return FALSE;
4835 }
4836
4837 #ifdef FEAT_VISUAL
4838 /*
4839 * prepare a few things for block mode yank/delete/tilde
4840 *
4841 * for delete:
4842 * - textlen includes the first/last char to be (partly) deleted
4843 * - start/endspaces is the number of columns that are taken by the
4844 * first/last deleted char minus the number of columns that have to be
4845 * deleted. for yank and tilde:
4846 * - textlen includes the first/last char to be wholly yanked
4847 * - start/endspaces is the number of columns of the first/last yanked char
4848 * that are to be yanked.
4849 */
4850 static void
4851 block_prep(oap, bdp, lnum, is_del)
4852 oparg_T *oap;
4853 struct block_def *bdp;
4854 linenr_T lnum;
4855 int is_del;
4856 {
4857 int incr = 0;
4858 char_u *pend;
4859 char_u *pstart;
4860 char_u *line;
4861 char_u *prev_pstart;
4862 char_u *prev_pend;
4863
4864 bdp->startspaces = 0;
4865 bdp->endspaces = 0;
4866 bdp->textlen = 0;
4867 bdp->start_vcol = 0;
4868 bdp->end_vcol = 0;
4869 #ifdef FEAT_VISUALEXTRA
4870 bdp->is_short = FALSE;
4871 bdp->is_oneChar = FALSE;
4872 bdp->pre_whitesp = 0;
4873 bdp->pre_whitesp_c = 0;
4874 bdp->end_char_vcols = 0;
4875 #endif
4876 bdp->start_char_vcols = 0;
4877
4878 line = ml_get(lnum);
4879 pstart = line;
4880 prev_pstart = line;
4881 while (bdp->start_vcol < oap->start_vcol && *pstart)
4882 {
4883 /* Count a tab for what it's worth (if list mode not on) */
4884 incr = lbr_chartabsize(pstart, (colnr_T)bdp->start_vcol);
4885 bdp->start_vcol += incr;
4886 #ifdef FEAT_VISUALEXTRA
4887 if (vim_iswhite(*pstart))
4888 {
4889 bdp->pre_whitesp += incr;
4890 bdp->pre_whitesp_c++;
4891 }
4892 else
4893 {
4894 bdp->pre_whitesp = 0;
4895 bdp->pre_whitesp_c = 0;
4896 }
4897 #endif
4898 prev_pstart = pstart;
4899 mb_ptr_adv(pstart);
4900 }
4901 bdp->start_char_vcols = incr;
4902 if (bdp->start_vcol < oap->start_vcol) /* line too short */
4903 {
4904 bdp->end_vcol = bdp->start_vcol;
4905 #ifdef FEAT_VISUALEXTRA
4906 bdp->is_short = TRUE;
4907 #endif
4908 if (!is_del || oap->op_type == OP_APPEND)
4909 bdp->endspaces = oap->end_vcol - oap->start_vcol + 1;
4910 }
4911 else
4912 {
4913 /* notice: this converts partly selected Multibyte characters to
4914 * spaces, too. */
4915 bdp->startspaces = bdp->start_vcol - oap->start_vcol;
4916 if (is_del && bdp->startspaces)
4917 bdp->startspaces = bdp->start_char_vcols - bdp->startspaces;
4918 pend = pstart;
4919 bdp->end_vcol = bdp->start_vcol;
4920 if (bdp->end_vcol > oap->end_vcol) /* it's all in one character */
4921 {
4922 #ifdef FEAT_VISUALEXTRA
4923 bdp->is_oneChar = TRUE;
4924 #endif
4925 if (oap->op_type == OP_INSERT)
4926 bdp->endspaces = bdp->start_char_vcols - bdp->startspaces;
4927 else if (oap->op_type == OP_APPEND)
4928 {
4929 bdp->startspaces += oap->end_vcol - oap->start_vcol + 1;
4930 bdp->endspaces = bdp->start_char_vcols - bdp->startspaces;
4931 }
4932 else
4933 {
4934 bdp->startspaces = oap->end_vcol - oap->start_vcol + 1;
4935 if (is_del && oap->op_type != OP_LSHIFT)
4936 {
4937 /* just putting the sum of those two into
4938 * bdp->startspaces doesn't work for Visual replace,
4939 * so we have to split the tab in two */
4940 bdp->startspaces = bdp->start_char_vcols
4941 - (bdp->start_vcol - oap->start_vcol);
4942 bdp->endspaces = bdp->end_vcol - oap->end_vcol - 1;
4943 }
4944 }
4945 }
4946 else
4947 {
4948 prev_pend = pend;
4949 while (bdp->end_vcol <= oap->end_vcol && *pend != NUL)
4950 {
4951 /* Count a tab for what it's worth (if list mode not on) */
4952 prev_pend = pend;
4953 incr = lbr_chartabsize_adv(&pend, (colnr_T)bdp->end_vcol);
4954 bdp->end_vcol += incr;
4955 }
4956 if (bdp->end_vcol <= oap->end_vcol
4957 && (!is_del
4958 || oap->op_type == OP_APPEND
4959 || oap->op_type == OP_REPLACE)) /* line too short */
4960 {
4961 #ifdef FEAT_VISUALEXTRA
4962 bdp->is_short = TRUE;
4963 #endif
4964 /* Alternative: include spaces to fill up the block.
4965 * Disadvantage: can lead to trailing spaces when the line is
4966 * short where the text is put */
4967 /* if (!is_del || oap->op_type == OP_APPEND) */
4968 if (oap->op_type == OP_APPEND || virtual_op)
4969 bdp->endspaces = oap->end_vcol - bdp->end_vcol
4970 + oap->inclusive;
4971 else
4972 bdp->endspaces = 0; /* replace doesn't add characters */
4973 }
4974 else if (bdp->end_vcol > oap->end_vcol)
4975 {
4976 bdp->endspaces = bdp->end_vcol - oap->end_vcol - 1;
4977 if (!is_del && bdp->endspaces)
4978 {
4979 bdp->endspaces = incr - bdp->endspaces;
4980 if (pend != pstart)
4981 pend = prev_pend;
4982 }
4983 }
4984 }
4985 #ifdef FEAT_VISUALEXTRA
4986 bdp->end_char_vcols = incr;
4987 #endif
4988 if (is_del && bdp->startspaces)
4989 pstart = prev_pstart;
4990 bdp->textlen = (int)(pend - pstart);
4991 }
4992 bdp->textcol = (colnr_T) (pstart - line);
4993 bdp->textstart = pstart;
4994 }
4995 #endif /* FEAT_VISUAL */
4996
4997 #ifdef FEAT_RIGHTLEFT
4998 static void reverse_line __ARGS((char_u *s));
4999
5000 static void
5001 reverse_line(s)
5002 char_u *s;
5003 {
5004 int i, j;
5005 char_u c;
5006
5007 if ((i = (int)STRLEN(s) - 1) <= 0)
5008 return;
5009
5010 curwin->w_cursor.col = i - curwin->w_cursor.col;
5011 for (j = 0; j < i; j++, i--)
5012 {
5013 c = s[i]; s[i] = s[j]; s[j] = c;
5014 }
5015 }
5016
5017 # define RLADDSUBFIX(ptr) if (curwin->w_p_rl) reverse_line(ptr);
5018 #else
5019 # define RLADDSUBFIX(ptr)
5020 #endif
5021
5022 /*
5023 * add or subtract 'Prenum1' from a number in a line
5024 * 'command' is CTRL-A for add, CTRL-X for subtract
5025 *
5026 * return FAIL for failure, OK otherwise
5027 */
5028 int
5029 do_addsub(command, Prenum1)
5030 int command;
5031 linenr_T Prenum1;
5032 {
5033 int col;
5034 char_u *buf1;
5035 char_u buf2[NUMBUFLEN];
5036 int hex; /* 'X' or 'x': hex; '0': octal */
5037 static int hexupper = FALSE; /* 0xABC */
5038 unsigned long n;
5039 long_u oldn;
5040 char_u *ptr;
5041 int c;
5042 int length = 0; /* character length of the number */
5043 int todel;
5044 int dohex;
5045 int dooct;
5046 int doalp;
5047 int firstdigit;
5048 int negative;
5049 int subtract;
5050
5051 dohex = (vim_strchr(curbuf->b_p_nf, 'x') != NULL); /* "heX" */
5052 dooct = (vim_strchr(curbuf->b_p_nf, 'o') != NULL); /* "Octal" */
5053 doalp = (vim_strchr(curbuf->b_p_nf, 'p') != NULL); /* "alPha" */
5054
5055 ptr = ml_get_curline();
5056 RLADDSUBFIX(ptr);
5057
5058 /*
5059 * First check if we are on a hexadecimal number, after the "0x".
5060 */
5061 col = curwin->w_cursor.col;
5062 if (dohex)
5063 while (col > 0 && vim_isxdigit(ptr[col]))
5064 --col;
5065 if ( dohex
5066 && col > 0
5067 && (ptr[col] == 'X'
5068 || ptr[col] == 'x')
5069 && ptr[col - 1] == '0'
5070 && vim_isxdigit(ptr[col + 1]))
5071 {
5072 /*
5073 * Found hexadecimal number, move to its start.
5074 */
5075 --col;
5076 }
5077 else
5078 {
5079 /*
5080 * Search forward and then backward to find the start of number.
5081 */
5082 col = curwin->w_cursor.col;
5083
5084 while (ptr[col] != NUL
5085 && !vim_isdigit(ptr[col])
5086 && !(doalp && ASCII_ISALPHA(ptr[col])))
5087 ++col;
5088
5089 while (col > 0
5090 && vim_isdigit(ptr[col - 1])
5091 && !(doalp && ASCII_ISALPHA(ptr[col])))
5092 --col;
5093 }
5094
5095 /*
5096 * If a number was found, and saving for undo works, replace the number.
5097 */
5098 firstdigit = ptr[col];
5099 RLADDSUBFIX(ptr);
5100 if ((!VIM_ISDIGIT(firstdigit) && !(doalp && ASCII_ISALPHA(firstdigit)))
5101 || u_save_cursor() != OK)
5102 {
5103 beep_flush();
5104 return FAIL;
5105 }
5106
5107 /* get ptr again, because u_save() may have changed it */
5108 ptr = ml_get_curline();
5109 RLADDSUBFIX(ptr);
5110
5111 if (doalp && ASCII_ISALPHA(firstdigit))
5112 {
5113 /* decrement or increment alphabetic character */
5114 if (command == Ctrl_X)
5115 {
5116 if (CharOrd(firstdigit) < Prenum1)
5117 {
5118 if (isupper(firstdigit))
5119 firstdigit = 'A';
5120 else
5121 firstdigit = 'a';
5122 }
5123 else
5124 #ifdef EBCDIC
5125 firstdigit = EBCDIC_CHAR_ADD(firstdigit, -Prenum1);
5126 #else
5127 firstdigit -= Prenum1;
5128 #endif
5129 }
5130 else
5131 {
5132 if (26 - CharOrd(firstdigit) - 1 < Prenum1)
5133 {
5134 if (isupper(firstdigit))
5135 firstdigit = 'Z';
5136 else
5137 firstdigit = 'z';
5138 }
5139 else
5140 #ifdef EBCDIC
5141 firstdigit = EBCDIC_CHAR_ADD(firstdigit, Prenum1);
5142 #else
5143 firstdigit += Prenum1;
5144 #endif
5145 }
5146 curwin->w_cursor.col = col;
5147 (void)del_char(FALSE);
5148 ins_char(firstdigit);
5149 }
5150 else
5151 {
5152 negative = FALSE;
5153 if (col > 0 && ptr[col - 1] == '-') /* negative number */
5154 {
5155 --col;
5156 negative = TRUE;
5157 }
5158
5159 /* get the number value (unsigned) */
5160 vim_str2nr(ptr + col, &hex, &length, dooct, dohex, NULL, &n);
5161
5162 /* ignore leading '-' for hex and octal numbers */
5163 if (hex && negative)
5164 {
5165 ++col;
5166 --length;
5167 negative = FALSE;
5168 }
5169
5170 /* add or subtract */
5171 subtract = FALSE;
5172 if (command == Ctrl_X)
5173 subtract ^= TRUE;
5174 if (negative)
5175 subtract ^= TRUE;
5176
5177 oldn = n;
5178 if (subtract)
5179 n -= (unsigned long)Prenum1;
5180 else
5181 n += (unsigned long)Prenum1;
5182
5183 /* handle wraparound for decimal numbers */
5184 if (!hex)
5185 {
5186 if (subtract)
5187 {
5188 if (n > oldn)
5189 {
5190 n = 1 + (n ^ (unsigned long)-1);
5191 negative ^= TRUE;
5192 }
5193 }
5194 else /* add */
5195 {
5196 if (n < oldn)
5197 {
5198 n = (n ^ (unsigned long)-1);
5199 negative ^= TRUE;
5200 }
5201 }
5202 if (n == 0)
5203 negative = FALSE;
5204 }
5205
5206 /*
5207 * Delete the old number.
5208 */
5209 curwin->w_cursor.col = col;
5210 todel = length;
5211 c = gchar_cursor();
5212 /*
5213 * Don't include the '-' in the length, only the length of the part
5214 * after it is kept the same.
5215 */
5216 if (c == '-')
5217 --length;
5218 while (todel-- > 0)
5219 {
5220 if (c < 0x100 && isalpha(c))
5221 {
5222 if (isupper(c))
5223 hexupper = TRUE;
5224 else
5225 hexupper = FALSE;
5226 }
5227 /* del_char() will mark line needing displaying */
5228 (void)del_char(FALSE);
5229 c = gchar_cursor();
5230 }
5231
5232 /*
5233 * Prepare the leading characters in buf1[].
5234 * When there are many leading zeros it could be very long. Allocate
5235 * a bit too much.
5236 */
5237 buf1 = alloc((unsigned)length + NUMBUFLEN);
5238 if (buf1 == NULL)
5239 return FAIL;
5240 ptr = buf1;
5241 if (negative)
5242 {
5243 *ptr++ = '-';
5244 }
5245 if (hex)
5246 {
5247 *ptr++ = '0';
5248 --length;
5249 }
5250 if (hex == 'x' || hex == 'X')
5251 {
5252 *ptr++ = hex;
5253 --length;
5254 }
5255
5256 /*
5257 * Put the number characters in buf2[].
5258 */
5259 if (hex == 0)
5260 sprintf((char *)buf2, "%lu", n);
5261 else if (hex == '0')
5262 sprintf((char *)buf2, "%lo", n);
5263 else if (hex && hexupper)
5264 sprintf((char *)buf2, "%lX", n);
5265 else
5266 sprintf((char *)buf2, "%lx", n);
5267 length -= (int)STRLEN(buf2);
5268
5269 /*
5270 * Adjust number of zeros to the new number of digits, so the
5271 * total length of the number remains the same.
5272 * Don't do this when
5273 * the result may look like an octal number.
5274 */
5275 if (firstdigit == '0' && !(dooct && hex == 0))
5276 while (length-- > 0)
5277 *ptr++ = '0';
5278 *ptr = NUL;
5279 STRCAT(buf1, buf2);
5280 ins_str(buf1); /* insert the new number */
5281 vim_free(buf1);
5282 }
5283 --curwin->w_cursor.col;
5284 curwin->w_set_curswant = TRUE;
5285 #ifdef FEAT_RIGHTLEFT
5286 ptr = ml_get_buf(curbuf, curwin->w_cursor.lnum, TRUE);
5287 RLADDSUBFIX(ptr);
5288 #endif
5289 return OK;
5290 }
5291
5292 #ifdef FEAT_VIMINFO
5293 int
5294 read_viminfo_register(virp, force)
5295 vir_T *virp;
5296 int force;
5297 {
5298 int eof;
5299 int do_it = TRUE;
5300 int size;
5301 int limit;
5302 int i;
5303 int set_prev = FALSE;
5304 char_u *str;
5305 char_u **array = NULL;
5306
5307 /* We only get here (hopefully) if line[0] == '"' */
5308 str = virp->vir_line + 1;
5309 if (*str == '"')
5310 {
5311 set_prev = TRUE;
5312 str++;
5313 }
5314 if (!ASCII_ISALNUM(*str) && *str != '-')
5315 {
5316 if (viminfo_error("E577: ", _("Illegal register name"), virp->vir_line))
5317 return TRUE; /* too many errors, pretend end-of-file */
5318 do_it = FALSE;
5319 }
5320 get_yank_register(*str++, FALSE);
5321 if (!force && y_current->y_array != NULL)
5322 do_it = FALSE;
5323 size = 0;
5324 limit = 100; /* Optimized for registers containing <= 100 lines */
5325 if (do_it)
5326 {
5327 if (set_prev)
5328 y_previous = y_current;
5329 vim_free(y_current->y_array);
5330 array = y_current->y_array =
5331 (char_u **)alloc((unsigned)(limit * sizeof(char_u *)));
5332 str = skipwhite(str);
5333 if (STRNCMP(str, "CHAR", 4) == 0)
5334 y_current->y_type = MCHAR;
5335 #ifdef FEAT_VISUAL
5336 else if (STRNCMP(str, "BLOCK", 5) == 0)
5337 y_current->y_type = MBLOCK;
5338 #endif
5339 else
5340 y_current->y_type = MLINE;
5341 /* get the block width; if it's missing we get a zero, which is OK */
5342 str = skipwhite(skiptowhite(str));
5343 #ifdef FEAT_VISUAL
5344 y_current->y_width = getdigits(&str);
5345 #else
5346 (void)getdigits(&str);
5347 #endif
5348 }
5349
5350 while (!(eof = viminfo_readline(virp))
5351 && (virp->vir_line[0] == TAB || virp->vir_line[0] == '<'))
5352 {
5353 if (do_it)
5354 {
5355 if (size >= limit)
5356 {
5357 y_current->y_array = (char_u **)
5358 alloc((unsigned)(limit * 2 * sizeof(char_u *)));
5359 for (i = 0; i < limit; i++)
5360 y_current->y_array[i] = array[i];
5361 vim_free(array);
5362 limit *= 2;
5363 array = y_current->y_array;
5364 }
5365 str = viminfo_readstring(virp, 1, TRUE);
5366 if (str != NULL)
5367 array[size++] = str;
5368 else
5369 do_it = FALSE;
5370 }
5371 }
5372 if (do_it)
5373 {
5374 if (size == 0)
5375 {
5376 vim_free(array);
5377 y_current->y_array = NULL;
5378 }
5379 else if (size < limit)
5380 {
5381 y_current->y_array =
5382 (char_u **)alloc((unsigned)(size * sizeof(char_u *)));
5383 for (i = 0; i < size; i++)
5384 y_current->y_array[i] = array[i];
5385 vim_free(array);
5386 }
5387 y_current->y_size = size;
5388 }
5389 return eof;
5390 }
5391
5392 void
5393 write_viminfo_registers(fp)
5394 FILE *fp;
5395 {
5396 int i, j;
5397 char_u *type;
5398 char_u c;
5399 int num_lines;
5400 int max_num_lines;
5401 int max_kbyte;
5402 long len;
5403
5404 fprintf(fp, _("\n# Registers:\n"));
5405
5406 /* Get '<' value, use old '"' value if '<' is not found. */
5407 max_num_lines = get_viminfo_parameter('<');
5408 if (max_num_lines < 0)
5409 max_num_lines = get_viminfo_parameter('"');
5410 if (max_num_lines == 0)
5411 return;
5412 max_kbyte = get_viminfo_parameter('s');
5413 if (max_kbyte == 0)
5414 return;
5415 for (i = 0; i < NUM_REGISTERS; i++)
5416 {
5417 if (y_regs[i].y_array == NULL)
5418 continue;
5419 #ifdef FEAT_CLIPBOARD
5420 /* Skip '*'/'+' register, we don't want them back next time */
5421 if (i == STAR_REGISTER || i == PLUS_REGISTER)
5422 continue;
5423 #endif
5424 #ifdef FEAT_DND
5425 /* Neither do we want the '~' register */
5426 if (i == TILDE_REGISTER)
5427 continue;
5428 #endif
5429 /* Skip empty registers. */
5430 num_lines = y_regs[i].y_size;
5431 if (num_lines == 0
5432 || (num_lines == 1 && y_regs[i].y_type == MCHAR
5433 && STRLEN(y_regs[i].y_array[0]) == 0))
5434 continue;
5435
5436 if (max_kbyte > 0)
5437 {
5438 /* Skip register if there is more text than the maximum size. */
5439 len = 0;
5440 for (j = 0; j < num_lines; j++)
5441 len += (long)STRLEN(y_regs[i].y_array[j]) + 1L;
5442 if (len > (long)max_kbyte * 1024L)
5443 continue;
5444 }
5445
5446 switch (y_regs[i].y_type)
5447 {
5448 case MLINE:
5449 type = (char_u *)"LINE";
5450 break;
5451 case MCHAR:
5452 type = (char_u *)"CHAR";
5453 break;
5454 #ifdef FEAT_VISUAL
5455 case MBLOCK:
5456 type = (char_u *)"BLOCK";
5457 break;
5458 #endif
5459 default:
5460 sprintf((char *)IObuff, _("E574: Unknown register type %d"),
5461 y_regs[i].y_type);
5462 emsg(IObuff);
5463 type = (char_u *)"LINE";
5464 break;
5465 }
5466 if (y_previous == &y_regs[i])
5467 fprintf(fp, "\"");
5468 c = get_register_name(i);
5469 fprintf(fp, "\"%c\t%s\t%d\n", c, type,
5470 #ifdef FEAT_VISUAL
5471 (int)y_regs[i].y_width
5472 #else
5473 0
5474 #endif
5475 );
5476
5477 /* If max_num_lines < 0, then we save ALL the lines in the register */
5478 if (max_num_lines > 0 && num_lines > max_num_lines)
5479 num_lines = max_num_lines;
5480 for (j = 0; j < num_lines; j++)
5481 {
5482 putc('\t', fp);
5483 viminfo_writestring(fp, y_regs[i].y_array[j]);
5484 }
5485 }
5486 }
5487 #endif /* FEAT_VIMINFO */
5488
5489 #if defined(FEAT_CLIPBOARD) || defined(PROTO)
5490 /*
5491 * SELECTION / PRIMARY ('*')
5492 *
5493 * Text selection stuff that uses the GUI selection register '*'. When using a
5494 * GUI this may be text from another window, otherwise it is the last text we
5495 * had highlighted with VIsual mode. With mouse support, clicking the middle
5496 * button performs the paste, otherwise you will need to do <"*p>. "
5497 * If not under X, it is synonymous with the clipboard register '+'.
5498 *
5499 * X CLIPBOARD ('+')
5500 *
5501 * Text selection stuff that uses the GUI clipboard register '+'.
5502 * Under X, this matches the standard cut/paste buffer CLIPBOARD selection.
5503 * It will be used for unnamed cut/pasting is 'clipboard' contains "unnamed",
5504 * otherwise you will need to do <"+p>. "
5505 * If not under X, it is synonymous with the selection register '*'.
5506 */
5507
5508 /*
5509 * Routine to export any final X selection we had to the environment
5510 * so that the text is still available after vim has exited. X selections
5511 * only exist while the owning application exists, so we write to the
5512 * permanent (while X runs) store CUT_BUFFER0.
5513 * Dump the CLIPBOARD selection if we own it (it's logically the more
5514 * 'permanent' of the two), otherwise the PRIMARY one.
5515 * For now, use a hard-coded sanity limit of 1Mb of data.
5516 */
5517 #if defined(FEAT_X11) && defined(FEAT_CLIPBOARD)
5518 void
5519 x11_export_final_selection()
5520 {
5521 Display *dpy;
5522 char_u *str = NULL;
5523 long_u len = 0;
5524 int motion_type = -1;
5525
5526 # ifdef FEAT_GUI
5527 if (gui.in_use)
5528 dpy = X_DISPLAY;
5529 else
5530 # endif
5531 # ifdef FEAT_XCLIPBOARD
5532 dpy = xterm_dpy;
5533 # else
5534 return;
5535 # endif
5536
5537 /* Get selection to export */
5538 if (clip_plus.owned)
5539 motion_type = clip_convert_selection(&str, &len, &clip_plus);
5540 else if (clip_star.owned)
5541 motion_type = clip_convert_selection(&str, &len, &clip_star);
5542
5543 /* Check it's OK */
5544 if (dpy != NULL && str != NULL && motion_type >= 0
5545 && len < 1024*1024 && len > 0)
5546 {
5547 XStoreBuffer(dpy, (char *)str, (int)len, 0);
5548 XFlush(dpy);
5549 }
5550
5551 vim_free(str);
5552 }
5553 #endif
5554
5555 void
5556 clip_free_selection(cbd)
5557 VimClipboard *cbd;
5558 {
5559 struct yankreg *y_ptr = y_current;
5560
5561 if (cbd == &clip_plus)
5562 y_current = &y_regs[PLUS_REGISTER];
5563 else
5564 y_current = &y_regs[STAR_REGISTER];
5565 free_yank_all();
5566 y_current->y_size = 0;
5567 y_current = y_ptr;
5568 }
5569
5570 /*
5571 * Get the selected text and put it in the gui selection register '*' or '+'.
5572 */
5573 void
5574 clip_get_selection(cbd)
5575 VimClipboard *cbd;
5576 {
5577 struct yankreg *old_y_previous, *old_y_current;
5578 pos_T old_cursor;
5579 #ifdef FEAT_VISUAL
5580 pos_T old_visual;
5581 int old_visual_mode;
5582 #endif
5583 colnr_T old_curswant;
5584 int old_set_curswant;
5585 pos_T old_op_start, old_op_end;
5586 oparg_T oa;
5587 cmdarg_T ca;
5588
5589 if (cbd->owned)
5590 {
5591 if ((cbd == &clip_plus && y_regs[PLUS_REGISTER].y_array != NULL)
5592 || (cbd == &clip_star && y_regs[STAR_REGISTER].y_array != NULL))
5593 return;
5594
5595 /* Get the text between clip_star.start & clip_star.end */
5596 old_y_previous = y_previous;
5597 old_y_current = y_current;
5598 old_cursor = curwin->w_cursor;
5599 old_curswant = curwin->w_curswant;
5600 old_set_curswant = curwin->w_set_curswant;
5601 old_op_start = curbuf->b_op_start;
5602 old_op_end = curbuf->b_op_end;
5603 #ifdef FEAT_VISUAL
5604 old_visual = VIsual;
5605 old_visual_mode = VIsual_mode;
5606 #endif
5607 clear_oparg(&oa);
5608 oa.regname = (cbd == &clip_plus ? '+' : '*');
5609 oa.op_type = OP_YANK;
5610 vim_memset(&ca, 0, sizeof(ca));
5611 ca.oap = &oa;
5612 ca.cmdchar = 'y';
5613 ca.count1 = 1;
5614 ca.retval = CA_NO_ADJ_OP_END;
5615 do_pending_operator(&ca, 0, TRUE);
5616 y_previous = old_y_previous;
5617 y_current = old_y_current;
5618 curwin->w_cursor = old_cursor;
5619 changed_cline_bef_curs(); /* need to update w_virtcol et al */
5620 curwin->w_curswant = old_curswant;
5621 curwin->w_set_curswant = old_set_curswant;
5622 curbuf->b_op_start = old_op_start;
5623 curbuf->b_op_end = old_op_end;
5624 #ifdef FEAT_VISUAL
5625 VIsual = old_visual;
5626 VIsual_mode = old_visual_mode;
5627 #endif
5628 }
5629 else
5630 {
5631 clip_free_selection(cbd);
5632
5633 /* Try to get selected text from another window */
5634 clip_gen_request_selection(cbd);
5635 }
5636 }
5637
5638 /* Convert from the GUI selection string into the '*'/'+' register */
5639 void
5640 clip_yank_selection(type, str, len, cbd)
5641 int type;
5642 char_u *str;
5643 long len;
5644 VimClipboard *cbd;
5645 {
5646 struct yankreg *y_ptr;
5647
5648 if (cbd == &clip_plus)
5649 y_ptr = &y_regs[PLUS_REGISTER];
5650 else
5651 y_ptr = &y_regs[STAR_REGISTER];
5652
5653 clip_free_selection(cbd);
5654
5655 str_to_reg(y_ptr, type, str, len, 0L);
5656 }
5657
5658 /*
5659 * Convert the '*'/'+' register into a GUI selection string returned in *str
5660 * with length *len.
5661 * Returns the motion type, or -1 for failure.
5662 */
5663 int
5664 clip_convert_selection(str, len, cbd)
5665 char_u **str;
5666 long_u *len;
5667 VimClipboard *cbd;
5668 {
5669 char_u *p;
5670 int lnum;
5671 int i, j;
5672 int_u eolsize;
5673 struct yankreg *y_ptr;
5674
5675 if (cbd == &clip_plus)
5676 y_ptr = &y_regs[PLUS_REGISTER];
5677 else
5678 y_ptr = &y_regs[STAR_REGISTER];
5679
5680 #ifdef USE_CRNL
5681 eolsize = 2;
5682 #else
5683 eolsize = 1;
5684 #endif
5685
5686 *str = NULL;
5687 *len = 0;
5688 if (y_ptr->y_array == NULL)
5689 return -1;
5690
5691 for (i = 0; i < y_ptr->y_size; i++)
5692 *len += (long_u)STRLEN(y_ptr->y_array[i]) + eolsize;
5693
5694 /*
5695 * Don't want newline character at end of last line if we're in MCHAR mode.
5696 */
5697 if (y_ptr->y_type == MCHAR && *len >= eolsize)
5698 *len -= eolsize;
5699
5700 p = *str = lalloc(*len + 1, TRUE); /* add one to avoid zero */
5701 if (p == NULL)
5702 return -1;
5703 lnum = 0;
5704 for (i = 0, j = 0; i < (int)*len; i++, j++)
5705 {
5706 if (y_ptr->y_array[lnum][j] == '\n')
5707 p[i] = NUL;
5708 else if (y_ptr->y_array[lnum][j] == NUL)
5709 {
5710 #ifdef USE_CRNL
5711 p[i++] = '\r';
5712 #endif
5713 #ifdef USE_CR
5714 p[i] = '\r';
5715 #else
5716 p[i] = '\n';
5717 #endif
5718 lnum++;
5719 j = -1;
5720 }
5721 else
5722 p[i] = y_ptr->y_array[lnum][j];
5723 }
5724 return y_ptr->y_type;
5725 }
5726
5727
5728 # if defined(FEAT_VISUAL) || defined(FEAT_EVAL)
5729 /*
5730 * If we have written to a clipboard register, send the text to the clipboard.
5731 */
5732 static void
5733 may_set_selection()
5734 {
5735 if (y_current == &(y_regs[STAR_REGISTER]) && clip_star.available)
5736 {
5737 clip_own_selection(&clip_star);
5738 clip_gen_set_selection(&clip_star);
5739 }
5740 else if (y_current == &(y_regs[PLUS_REGISTER]) && clip_plus.available)
5741 {
5742 clip_own_selection(&clip_plus);
5743 clip_gen_set_selection(&clip_plus);
5744 }
5745 }
5746 # endif
5747
5748 #endif /* FEAT_CLIPBOARD || PROTO */
5749
5750
5751 #if defined(FEAT_DND) || defined(PROTO)
5752 /*
5753 * Replace the contents of the '~' register with str.
5754 */
5755 void
5756 dnd_yank_drag_data(str, len)
5757 char_u *str;
5758 long len;
5759 {
5760 struct yankreg *curr;
5761
5762 curr = y_current;
5763 y_current = &y_regs[TILDE_REGISTER];
5764 free_yank_all();
5765 str_to_reg(y_current, MCHAR, str, len, 0L);
5766 y_current = curr;
5767 }
5768 #endif
5769
5770
5771 #if defined(FEAT_EVAL) || defined(PROTO)
5772 /*
5773 * Return the type of a register.
5774 * Used for getregtype()
5775 * Returns MAUTO for error.
5776 */
5777 char_u
5778 get_reg_type(regname, reglen)
5779 int regname;
5780 long *reglen;
5781 {
5782 switch (regname)
5783 {
5784 case '%': /* file name */
5785 case '#': /* alternate file name */
5786 case '=': /* expression */
5787 case ':': /* last command line */
5788 case '/': /* last search-pattern */
5789 case '.': /* last inserted text */
5790 #ifdef FEAT_SEARCHPATH
5791 case Ctrl_F: /* Filename under cursor */
5792 case Ctrl_P: /* Path under cursor, expand via "path" */
5793 #endif
5794 case Ctrl_W: /* word under cursor */
5795 case Ctrl_A: /* WORD (mnemonic All) under cursor */
5796 case '_': /* black hole: always empty */
5797 return MCHAR;
5798 }
5799
5800 #ifdef FEAT_CLIPBOARD
5801 regname = may_get_selection(regname);
5802 #endif
5803
5804 /* Should we check for a valid name? */
5805 get_yank_register(regname, FALSE);
5806
5807 if (y_current->y_array != NULL)
5808 {
5809 #ifdef FEAT_VISUAL
5810 if (reglen != NULL && y_current->y_type == MBLOCK)
5811 *reglen = y_current->y_width;
5812 #endif
5813 return y_current->y_type;
5814 }
5815 return MAUTO;
5816 }
5817
5818 /*
5819 * Return the contents of a register as a single allocated string.
5820 * Used for "@r" in expressions and for getreg().
5821 * Returns NULL for error.
5822 */
5823 char_u *
5824 get_reg_contents(regname, allowexpr, expr_src)
5825 int regname;
5826 int allowexpr; /* allow "=" register */
5827 int expr_src; /* get expression for "=" register */
5828 {
5829 long i;
5830 char_u *retval;
5831 int allocated;
5832 long len;
5833
5834 /* Don't allow using an expression register inside an expression */
5835 if (regname == '=')
5836 {
5837 if (allowexpr)
5838 {
5839 if (expr_src)
5840 return get_expr_line_src();
5841 return get_expr_line();
5842 }
5843 return NULL;
5844 }
5845
5846 if (regname == '@') /* "@@" is used for unnamed register */
5847 regname = '"';
5848
5849 /* check for valid regname */
5850 if (regname != NUL && !valid_yank_reg(regname, FALSE))
5851 return NULL;
5852
5853 #ifdef FEAT_CLIPBOARD
5854 regname = may_get_selection(regname);
5855 #endif
5856
5857 if (get_spec_reg(regname, &retval, &allocated, FALSE))
5858 {
5859 if (retval == NULL)
5860 return NULL;
5861 if (!allocated)
5862 retval = vim_strsave(retval);
5863 return retval;
5864 }
5865
5866 get_yank_register(regname, FALSE);
5867 if (y_current->y_array == NULL)
5868 return NULL;
5869
5870 /*
5871 * Compute length of resulting string.
5872 */
5873 len = 0;
5874 for (i = 0; i < y_current->y_size; ++i)
5875 {
5876 len += (long)STRLEN(y_current->y_array[i]);
5877 /*
5878 * Insert a newline between lines and after last line if
5879 * y_type is MLINE.
5880 */
5881 if (y_current->y_type == MLINE || i < y_current->y_size - 1)
5882 ++len;
5883 }
5884
5885 retval = lalloc(len + 1, TRUE);
5886
5887 /*
5888 * Copy the lines of the yank register into the string.
5889 */
5890 if (retval != NULL)
5891 {
5892 len = 0;
5893 for (i = 0; i < y_current->y_size; ++i)
5894 {
5895 STRCPY(retval + len, y_current->y_array[i]);
5896 len += (long)STRLEN(retval + len);
5897
5898 /*
5899 * Insert a NL between lines and after the last line if y_type is
5900 * MLINE.
5901 */
5902 if (y_current->y_type == MLINE || i < y_current->y_size - 1)
5903 retval[len++] = '\n';
5904 }
5905 retval[len] = NUL;
5906 }
5907
5908 return retval;
5909 }
5910
5911 /*
5912 * Store string "str" in register "name".
5913 * "maxlen" is the maximum number of bytes to use, -1 for all bytes.
5914 * If "must_append" is TRUE, always append to the register. Otherwise append
5915 * if "name" is an uppercase letter.
5916 * Note: "maxlen" and "must_append" don't work for the "/" register.
5917 * Careful: 'str' is modified, you may have to use a copy!
5918 * If "str" ends in '\n' or '\r', use linewise, otherwise use characterwise.
5919 */
5920 void
5921 write_reg_contents(name, str, maxlen, must_append)
5922 int name;
5923 char_u *str;
5924 int maxlen;
5925 int must_append;
5926 {
5927 write_reg_contents_ex(name, str, maxlen, must_append, MAUTO, 0L);
5928 }
5929
5930 void
5931 write_reg_contents_ex(name, str, maxlen, must_append, yank_type, block_len)
5932 int name;
5933 char_u *str;
5934 int maxlen;
5935 int must_append;
5936 int yank_type;
5937 long block_len;
5938 {
5939 struct yankreg *old_y_previous, *old_y_current;
5940 long len;
5941
5942 if (maxlen >= 0)
5943 len = maxlen;
5944 else
5945 len = (long)STRLEN(str);
5946
5947 /* Special case: '/' search pattern */
5948 if (name == '/')
5949 {
5950 set_last_search_pat(str, RE_SEARCH, TRUE, TRUE);
5951 return;
5952 }
5953
5954 #ifdef FEAT_EVAL
5955 if (name == '=')
5956 {
5957 char_u *p, *s;
5958
5959 p = vim_strnsave(str, (int)len);
5960 if (p == NULL)
5961 return;
5962 if (must_append)
5963 {
5964 s = concat_str(get_expr_line_src(), p);
5965 vim_free(p);
5966 p = s;
5967
5968 }
5969 set_expr_line(p);
5970 return;
5971 }
5972 #endif
5973
5974 if (!valid_yank_reg(name, TRUE)) /* check for valid reg name */
5975 {
5976 emsg_invreg(name);
5977 return;
5978 }
5979
5980 if (name == '_') /* black hole: nothing to do */
5981 return;
5982
5983 /* Don't want to change the current (unnamed) register */
5984 old_y_previous = y_previous;
5985 old_y_current = y_current;
5986
5987 get_yank_register(name, TRUE);
5988 if (!y_append && !must_append)
5989 free_yank_all();
5990 #ifndef FEAT_VISUAL
5991 /* Just in case - make sure we don't use MBLOCK */
5992 if (yank_type == MBLOCK)
5993 yank_type = MAUTO;
5994 #endif
5995 if (yank_type == MAUTO)
5996 yank_type = ((len > 0 && (str[len - 1] == '\n' || str[len - 1] == '\r'))
5997 ? MLINE : MCHAR);
5998 str_to_reg(y_current, yank_type, str, len, block_len);
5999
6000 # ifdef FEAT_CLIPBOARD
6001 /* Send text of clipboard register to the clipboard. */
6002 may_set_selection();
6003 # endif
6004
6005 /* ':let @" = "val"' should change the meaning of the "" register */
6006 if (name != '"')
6007 y_previous = old_y_previous;
6008 y_current = old_y_current;
6009 }
6010 #endif /* FEAT_EVAL */
6011
6012 #if defined(FEAT_CLIPBOARD) || defined(FEAT_EVAL)
6013 /*
6014 * Put a string into a register. When the register is not empty, the string
6015 * is appended.
6016 */
6017 static void
6018 str_to_reg(y_ptr, type, str, len, blocklen)
6019 struct yankreg *y_ptr; /* pointer to yank register */
6020 int type; /* MCHAR, MLINE or MBLOCK */
6021 char_u *str; /* string to put in register */
6022 long len; /* length of string */
6023 long blocklen; /* width of Visual block */
6024 {
6025 int lnum;
6026 long start;
6027 long i;
6028 int extra;
6029 int newlines; /* number of lines added */
6030 int extraline = 0; /* extra line at the end */
6031 int append = FALSE; /* append to last line in register */
6032 char_u *s;
6033 char_u **pp;
6034 #ifdef FEAT_VISUAL
6035 long maxlen;
6036 #endif
6037
6038 if (y_ptr->y_array == NULL) /* NULL means emtpy register */
6039 y_ptr->y_size = 0;
6040
6041 /*
6042 * Count the number of lines within the string
6043 */
6044 newlines = 0;
6045 for (i = 0; i < len; i++)
6046 if (str[i] == '\n')
6047 ++newlines;
6048 if (type == MCHAR || len == 0 || str[len - 1] != '\n')
6049 {
6050 extraline = 1;
6051 ++newlines; /* count extra newline at the end */
6052 }
6053 if (y_ptr->y_size > 0 && y_ptr->y_type == MCHAR)
6054 {
6055 append = TRUE;
6056 --newlines; /* uncount newline when appending first line */
6057 }
6058
6059 /*
6060 * Allocate an array to hold the pointers to the new register lines.
6061 * If the register was not empty, move the existing lines to the new array.
6062 */
6063 pp = (char_u **)lalloc_clear((y_ptr->y_size + newlines)
6064 * sizeof(char_u *), TRUE);
6065 if (pp == NULL) /* out of memory */
6066 return;
6067 for (lnum = 0; lnum < y_ptr->y_size; ++lnum)
6068 pp[lnum] = y_ptr->y_array[lnum];
6069 vim_free(y_ptr->y_array);
6070 y_ptr->y_array = pp;
6071 #ifdef FEAT_VISUAL
6072 maxlen = 0;
6073 #endif
6074
6075 /*
6076 * Find the end of each line and save it into the array.
6077 */
6078 for (start = 0; start < len + extraline; start += i + 1)
6079 {
6080 for (i = start; i < len; ++i) /* find the end of the line */
6081 if (str[i] == '\n')
6082 break;
6083 i -= start; /* i is now length of line */
6084 #ifdef FEAT_VISUAL
6085 if (i > maxlen)
6086 maxlen = i;
6087 #endif
6088 if (append)
6089 {
6090 --lnum;
6091 extra = (int)STRLEN(y_ptr->y_array[lnum]);
6092 }
6093 else
6094 extra = 0;
6095 s = alloc((unsigned)(i + extra + 1));
6096 if (s == NULL)
6097 break;
6098 if (extra)
6099 mch_memmove(s, y_ptr->y_array[lnum], (size_t)extra);
6100 if (append)
6101 vim_free(y_ptr->y_array[lnum]);
6102 if (i)
6103 mch_memmove(s + extra, str + start, (size_t)i);
6104 extra += i;
6105 s[extra] = NUL;
6106 y_ptr->y_array[lnum++] = s;
6107 while (--extra >= 0)
6108 {
6109 if (*s == NUL)
6110 *s = '\n'; /* replace NUL with newline */
6111 ++s;
6112 }
6113 append = FALSE; /* only first line is appended */
6114 }
6115 y_ptr->y_type = type;
6116 y_ptr->y_size = lnum;
6117 # ifdef FEAT_VISUAL
6118 if (type == MBLOCK)
6119 y_ptr->y_width = (blocklen < 0 ? maxlen - 1 : blocklen);
6120 else
6121 y_ptr->y_width = 0;
6122 # endif
6123 }
6124 #endif /* FEAT_CLIPBOARD || FEAT_EVAL || PROTO */
6125
6126 void
6127 clear_oparg(oap)
6128 oparg_T *oap;
6129 {
6130 vim_memset(oap, 0, sizeof(oparg_T));
6131 }
6132
6133 static long line_count_info __ARGS((char_u *line, long *wc, long *cc, long limit, int eol_size));
6134
6135 /*
6136 * Count the number of bytes, characters and "words" in a line.
6137 *
6138 * "Words" are counted by looking for boundaries between non-space and
6139 * space characters. (it seems to produce results that match 'wc'.)
6140 *
6141 * Return value is byte count; word count for the line is added to "*wc".
6142 * Char count is added to "*cc".
6143 *
6144 * The function will only examine the first "limit" characters in the
6145 * line, stopping if it encounters an end-of-line (NUL byte). In that
6146 * case, eol_size will be added to the character count to account for
6147 * the size of the EOL character.
6148 */
6149 static long
6150 line_count_info(line, wc, cc, limit, eol_size)
6151 char_u *line;
6152 long *wc;
6153 long *cc;
6154 long limit;
6155 int eol_size;
6156 {
6157 long i;
6158 long words = 0;
6159 long chars = 0;
6160 int is_word = 0;
6161
6162 for (i = 0; line[i] && i < limit; )
6163 {
6164 if (is_word)
6165 {
6166 if (vim_isspace(line[i]))
6167 {
6168 words++;
6169 is_word = 0;
6170 }
6171 }
6172 else if (!vim_isspace(line[i]))
6173 is_word = 1;
6174 ++chars;
6175 #ifdef FEAT_MBYTE
6176 i += (*mb_ptr2len)(line + i);
6177 #else
6178 ++i;
6179 #endif
6180 }
6181
6182 if (is_word)
6183 words++;
6184 *wc += words;
6185
6186 /* Add eol_size if the end of line was reached before hitting limit. */
6187 if (line[i] == NUL && i < limit)
6188 {
6189 i += eol_size;
6190 chars += eol_size;
6191 }
6192 *cc += chars;
6193 return i;
6194 }
6195
6196 /*
6197 * Give some info about the position of the cursor (for "g CTRL-G").
6198 * In Visual mode, give some info about the selected region. (In this case,
6199 * the *_count_cursor variables store running totals for the selection.)
6200 */
6201 void
6202 cursor_pos_info()
6203 {
6204 char_u *p;
6205 char_u buf1[50];
6206 char_u buf2[40];
6207 linenr_T lnum;
6208 long byte_count = 0;
6209 long byte_count_cursor = 0;
6210 long char_count = 0;
6211 long char_count_cursor = 0;
6212 long word_count = 0;
6213 long word_count_cursor = 0;
6214 int eol_size;
6215 long last_check = 100000L;
6216 #ifdef FEAT_VISUAL
6217 long line_count_selected = 0;
6218 pos_T min_pos, max_pos;
6219 oparg_T oparg;
6220 struct block_def bd;
6221 #endif
6222
6223 /*
6224 * Compute the length of the file in characters.
6225 */
6226 if (curbuf->b_ml.ml_flags & ML_EMPTY)
6227 {
6228 MSG(_(no_lines_msg));
6229 }
6230 else
6231 {
6232 if (get_fileformat(curbuf) == EOL_DOS)
6233 eol_size = 2;
6234 else
6235 eol_size = 1;
6236
6237 #ifdef FEAT_VISUAL
6238 if (VIsual_active)
6239 {
6240 if (lt(VIsual, curwin->w_cursor))
6241 {
6242 min_pos = VIsual;
6243 max_pos = curwin->w_cursor;
6244 }
6245 else
6246 {
6247 min_pos = curwin->w_cursor;
6248 max_pos = VIsual;
6249 }
6250 if (*p_sel == 'e' && max_pos.col > 0)
6251 --max_pos.col;
6252
6253 if (VIsual_mode == Ctrl_V)
6254 {
6255 oparg.is_VIsual = 1;
6256 oparg.block_mode = TRUE;
6257 oparg.op_type = OP_NOP;
6258 getvcols(curwin, &min_pos, &max_pos,
6259 &oparg.start_vcol, &oparg.end_vcol);
6260 if (curwin->w_curswant == MAXCOL)
6261 oparg.end_vcol = MAXCOL;
6262 /* Swap the start, end vcol if needed */
6263 if (oparg.end_vcol < oparg.start_vcol)
6264 {
6265 oparg.end_vcol += oparg.start_vcol;
6266 oparg.start_vcol = oparg.end_vcol - oparg.start_vcol;
6267 oparg.end_vcol -= oparg.start_vcol;
6268 }
6269 }
6270 line_count_selected = max_pos.lnum - min_pos.lnum + 1;
6271 }
6272 #endif
6273
6274 for (lnum = 1; lnum <= curbuf->b_ml.ml_line_count; ++lnum)
6275 {
6276 /* Check for a CTRL-C every 100000 characters. */
6277 if (byte_count > last_check)
6278 {
6279 ui_breakcheck();
6280 if (got_int)
6281 return;
6282 last_check = byte_count + 100000L;
6283 }
6284
6285 #ifdef FEAT_VISUAL
6286 /* Do extra processing for VIsual mode. */
6287 if (VIsual_active
6288 && lnum >= min_pos.lnum && lnum <= max_pos.lnum)
6289 {
6290 char_u *s = NULL;
6291 long len = 0L;
6292
6293 switch (VIsual_mode)
6294 {
6295 case Ctrl_V:
6296 # ifdef FEAT_VIRTUALEDIT
6297 virtual_op = virtual_active();
6298 # endif
6299 block_prep(&oparg, &bd, lnum, 0);
6300 # ifdef FEAT_VIRTUALEDIT
6301 virtual_op = MAYBE;
6302 # endif
6303 s = bd.textstart;
6304 len = (long)bd.textlen;
6305 break;
6306 case 'V':
6307 s = ml_get(lnum);
6308 len = MAXCOL;
6309 break;
6310 case 'v':
6311 {
6312 colnr_T start_col = (lnum == min_pos.lnum)
6313 ? min_pos.col : 0;
6314 colnr_T end_col = (lnum == max_pos.lnum)
6315 ? max_pos.col - start_col + 1 : MAXCOL;
6316
6317 s = ml_get(lnum) + start_col;
6318 len = end_col;
6319 }
6320 break;
6321 }
6322 if (s != NULL)
6323 {
6324 byte_count_cursor += line_count_info(s, &word_count_cursor,
6325 &char_count_cursor, len, eol_size);
6326 if (lnum == curbuf->b_ml.ml_line_count
6327 && !curbuf->b_p_eol
6328 && curbuf->b_p_bin
6329 && (long)STRLEN(s) < len)
6330 byte_count_cursor -= eol_size;
6331 }
6332 }
6333 else
6334 #endif
6335 {
6336 /* In non-visual mode, check for the line the cursor is on */
6337 if (lnum == curwin->w_cursor.lnum)
6338 {
6339 word_count_cursor += word_count;
6340 char_count_cursor += char_count;
6341 byte_count_cursor = byte_count +
6342 line_count_info(ml_get(lnum),
6343 &word_count_cursor, &char_count_cursor,
6344 (long)(curwin->w_cursor.col + 1), eol_size);
6345 }
6346 }
6347 /* Add to the running totals */
6348 byte_count += line_count_info(ml_get(lnum), &word_count,
6349 &char_count, (long)MAXCOL, eol_size);
6350 }
6351
6352 /* Correction for when last line doesn't have an EOL. */
6353 if (!curbuf->b_p_eol && curbuf->b_p_bin)
6354 byte_count -= eol_size;
6355
6356 #ifdef FEAT_VISUAL
6357 if (VIsual_active)
6358 {
6359 if (VIsual_mode == Ctrl_V && curwin->w_curswant < MAXCOL)
6360 {
6361 getvcols(curwin, &min_pos, &max_pos, &min_pos.col,
6362 &max_pos.col);
6363 sprintf((char *)buf1, _("%ld Cols; "),
6364 (long)(oparg.end_vcol - oparg.start_vcol + 1));
6365 }
6366 else
6367 buf1[0] = NUL;
6368
6369 if (char_count_cursor == byte_count_cursor
6370 && char_count == byte_count)
6371 sprintf((char *)IObuff, _("Selected %s%ld of %ld Lines; %ld of %ld Words; %ld of %ld Bytes"),
6372 buf1, line_count_selected,
6373 (long)curbuf->b_ml.ml_line_count,
6374 word_count_cursor, word_count,
6375 byte_count_cursor, byte_count);
6376 else
6377 sprintf((char *)IObuff, _("Selected %s%ld of %ld Lines; %ld of %ld Words; %ld of %ld Chars; %ld of %ld Bytes"),
6378 buf1, line_count_selected,
6379 (long)curbuf->b_ml.ml_line_count,
6380 word_count_cursor, word_count,
6381 char_count_cursor, char_count,
6382 byte_count_cursor, byte_count);
6383 }
6384 else
6385 #endif
6386 {
6387 p = ml_get_curline();
6388 validate_virtcol();
6389 col_print(buf1, (int)curwin->w_cursor.col + 1,
6390 (int)curwin->w_virtcol + 1);
6391 col_print(buf2, (int)STRLEN(p), linetabsize(p));
6392
6393 if (char_count_cursor == byte_count_cursor
6394 && char_count == byte_count)
6395 sprintf((char *)IObuff, _("Col %s of %s; Line %ld of %ld; Word %ld of %ld; Byte %ld of %ld"),
6396 (char *)buf1, (char *)buf2,
6397 (long)curwin->w_cursor.lnum,
6398 (long)curbuf->b_ml.ml_line_count,
6399 word_count_cursor, word_count,
6400 byte_count_cursor, byte_count);
6401 else
6402 sprintf((char *)IObuff, _("Col %s of %s; Line %ld of %ld; Word %ld of %ld; Char %ld of %ld; Byte %ld of %ld"),
6403 (char *)buf1, (char *)buf2,
6404 (long)curwin->w_cursor.lnum,
6405 (long)curbuf->b_ml.ml_line_count,
6406 word_count_cursor, word_count,
6407 char_count_cursor, char_count,
6408 byte_count_cursor, byte_count);
6409 }
6410
6411 #ifdef FEAT_MBYTE
6412 byte_count = bomb_size();
6413 if (byte_count > 0)
6414 sprintf((char *)IObuff + STRLEN(IObuff), _("(+%ld for BOM)"),
6415 byte_count);
6416 #endif
6417 /* Don't shorten this message, the user asked for it. */
6418 p = p_shm;
6419 p_shm = (char_u *)"";
6420 msg(IObuff);
6421 p_shm = p;
6422 }
6423 }
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