contrib/libedit/src/vi.c

   1 /*      $NetBSD: vi.c,v 1.45 2014/06/18 18:12:28 christos Exp $ */
   2
   3 /*-
   4  * Copyright (c) 1992, 1993
   5  *      The Regents of the University of California.  All rights reserved.
   6  *
   7  * This code is derived from software contributed to Berkeley by
   8  * Christos Zoulas of Cornell University.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  * 3. Neither the name of the University nor the names of its contributors
  19  *    may be used to endorse or promote products derived from this software
  20  *    without specific prior written permission.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  32  * SUCH DAMAGE.
  33  */
  34
  35 #include "config.h"
  36 #include <stdlib.h>
  37 #include <unistd.h>
  38 #include <limits.h>
  39 #include <sys/wait.h>
  40
  41 #if !defined(lint) && !defined(SCCSID)
  42 #if 0
  43 static char sccsid[] = "@(#)vi.c        8.1 (Berkeley) 6/4/93";
  44 #else
  45 __RCSID("$NetBSD: vi.c,v 1.45 2014/06/18 18:12:28 christos Exp $");
  46 #endif
  47 #endif /* not lint && not SCCSID */
  48
  49 /*
  50  * vi.c: Vi mode commands.
  51  */
  52 #include "el.h"
  53
  54 private el_action_t     cv_action(EditLine *, Int);
  55 private el_action_t     cv_paste(EditLine *, Int);
  56
  57 /* cv_action():
  58  *      Handle vi actions.
  59  */
  60 private el_action_t
  61 cv_action(EditLine *el, Int c)
  62 {
  63
  64         if (el->el_chared.c_vcmd.action != NOP) {
  65                 /* 'cc', 'dd' and (possibly) friends */
  66                 if (c != (Int)el->el_chared.c_vcmd.action)
  67                         return CC_ERROR;
  68
  69                 if (!(c & YANK))
  70                         cv_undo(el);
  71                 cv_yank(el, el->el_line.buffer,
  72                     (int)(el->el_line.lastchar - el->el_line.buffer));
  73                 el->el_chared.c_vcmd.action = NOP;
  74                 el->el_chared.c_vcmd.pos = 0;
  75                 if (!(c & YANK)) {
  76                         el->el_line.lastchar = el->el_line.buffer;
  77                         el->el_line.cursor = el->el_line.buffer;
  78                 }
  79                 if (c & INSERT)
  80                         el->el_map.current = el->el_map.key;
  81
  82                 return CC_REFRESH;
  83         }
  84         el->el_chared.c_vcmd.pos = el->el_line.cursor;
  85         el->el_chared.c_vcmd.action = c;
  86         return CC_ARGHACK;
  87 }
  88
  89 /* cv_paste():
  90  *      Paste previous deletion before or after the cursor
  91  */
  92 private el_action_t
  93 cv_paste(EditLine *el, Int c)
  94 {
  95         c_kill_t *k = &el->el_chared.c_kill;
  96         size_t len = (size_t)(k->last - k->buf);
  97
  98         if (k->buf == NULL || len == 0)
  99                 return CC_ERROR;
 100 #ifdef DEBUG_PASTE
 101         (void) fprintf(el->el_errfile, "Paste: \"%.*s\"\n", (int)len, k->buf);
 102 #endif
 103
 104         cv_undo(el);
 105
 106         if (!c && el->el_line.cursor < el->el_line.lastchar)
 107                 el->el_line.cursor++;
 108
 109         c_insert(el, (int)len);
 110         if (el->el_line.cursor + len > el->el_line.lastchar)
 111                 return CC_ERROR;
 112         (void) memcpy(el->el_line.cursor, k->buf, len *
 113             sizeof(*el->el_line.cursor));
 114
 115         return CC_REFRESH;
 116 }
 117
 118
 119 /* vi_paste_next():
 120  *      Vi paste previous deletion to the right of the cursor
 121  *      [p]
 122  */
 123 protected el_action_t
 124 /*ARGSUSED*/
 125 vi_paste_next(EditLine *el, Int c __attribute__((__unused__)))
 126 {
 127
 128         return cv_paste(el, 0);
 129 }
 130
 131
 132 /* vi_paste_prev():
 133  *      Vi paste previous deletion to the left of the cursor
 134  *      [P]
 135  */
 136 protected el_action_t
 137 /*ARGSUSED*/
 138 vi_paste_prev(EditLine *el, Int c __attribute__((__unused__)))
 139 {
 140
 141         return cv_paste(el, 1);
 142 }
 143
 144
 145 /* vi_prev_big_word():
 146  *      Vi move to the previous space delimited word
 147  *      [B]
 148  */
 149 protected el_action_t
 150 /*ARGSUSED*/
 151 vi_prev_big_word(EditLine *el, Int c __attribute__((__unused__)))
 152 {
 153
 154         if (el->el_line.cursor == el->el_line.buffer)
 155                 return CC_ERROR;
 156
 157         el->el_line.cursor = cv_prev_word(el->el_line.cursor,
 158             el->el_line.buffer,
 159             el->el_state.argument,
 160             cv__isWord);
 161
 162         if (el->el_chared.c_vcmd.action != NOP) {
 163                 cv_delfini(el);
 164                 return CC_REFRESH;
 165         }
 166         return CC_CURSOR;
 167 }
 168
 169
 170 /* vi_prev_word():
 171  *      Vi move to the previous word
 172  *      [b]
 173  */
 174 protected el_action_t
 175 /*ARGSUSED*/
 176 vi_prev_word(EditLine *el, Int c __attribute__((__unused__)))
 177 {
 178
 179         if (el->el_line.cursor == el->el_line.buffer)
 180                 return CC_ERROR;
 181
 182         el->el_line.cursor = cv_prev_word(el->el_line.cursor,
 183             el->el_line.buffer,
 184             el->el_state.argument,
 185             cv__isword);
 186
 187         if (el->el_chared.c_vcmd.action != NOP) {
 188                 cv_delfini(el);
 189                 return CC_REFRESH;
 190         }
 191         return CC_CURSOR;
 192 }
 193
 194
 195 /* vi_next_big_word():
 196  *      Vi move to the next space delimited word
 197  *      [W]
 198  */
 199 protected el_action_t
 200 /*ARGSUSED*/
 201 vi_next_big_word(EditLine *el, Int c __attribute__((__unused__)))
 202 {
 203
 204         if (el->el_line.cursor >= el->el_line.lastchar - 1)
 205                 return CC_ERROR;
 206
 207         el->el_line.cursor = cv_next_word(el, el->el_line.cursor,
 208             el->el_line.lastchar, el->el_state.argument, cv__isWord);
 209
 210         if (el->el_map.type == MAP_VI)
 211                 if (el->el_chared.c_vcmd.action != NOP) {
 212                         cv_delfini(el);
 213                         return CC_REFRESH;
 214                 }
 215         return CC_CURSOR;
 216 }
 217
 218
 219 /* vi_next_word():
 220  *      Vi move to the next word
 221  *      [w]
 222  */
 223 protected el_action_t
 224 /*ARGSUSED*/
 225 vi_next_word(EditLine *el, Int c __attribute__((__unused__)))
 226 {
 227
 228         if (el->el_line.cursor >= el->el_line.lastchar - 1)
 229                 return CC_ERROR;
 230
 231         el->el_line.cursor = cv_next_word(el, el->el_line.cursor,
 232             el->el_line.lastchar, el->el_state.argument, cv__isword);
 233
 234         if (el->el_map.type == MAP_VI)
 235                 if (el->el_chared.c_vcmd.action != NOP) {
 236                         cv_delfini(el);
 237                         return CC_REFRESH;
 238                 }
 239         return CC_CURSOR;
 240 }
 241
 242
 243 /* vi_change_case():
 244  *      Vi change case of character under the cursor and advance one character
 245  *      [~]
 246  */
 247 protected el_action_t
 248 vi_change_case(EditLine *el, Int c)
 249 {
 250         int i;
 251
 252         if (el->el_line.cursor >= el->el_line.lastchar)
 253                 return CC_ERROR;
 254         cv_undo(el);
 255         for (i = 0; i < el->el_state.argument; i++) {
 256
 257                 c = *el->el_line.cursor;
 258                 if (Isupper(c))
 259                         *el->el_line.cursor = Tolower(c);
 260                 else if (Islower(c))
 261                         *el->el_line.cursor = Toupper(c);
 262
 263                 if (++el->el_line.cursor >= el->el_line.lastchar) {
 264                         el->el_line.cursor--;
 265                         re_fastaddc(el);
 266                         break;
 267                 }
 268                 re_fastaddc(el);
 269         }
 270         return CC_NORM;
 271 }
 272
 273
 274 /* vi_change_meta():
 275  *      Vi change prefix command
 276  *      [c]
 277  */
 278 protected el_action_t
 279 /*ARGSUSED*/
 280 vi_change_meta(EditLine *el, Int c __attribute__((__unused__)))
 281 {
 282
 283         /*
 284          * Delete with insert == change: first we delete and then we leave in
 285          * insert mode.
 286          */
 287         return cv_action(el, DELETE | INSERT);
 288 }
 289
 290
 291 /* vi_insert_at_bol():
 292  *      Vi enter insert mode at the beginning of line
 293  *      [I]
 294  */
 295 protected el_action_t
 296 /*ARGSUSED*/
 297 vi_insert_at_bol(EditLine *el, Int c __attribute__((__unused__)))
 298 {
 299
 300         el->el_line.cursor = el->el_line.buffer;
 301         cv_undo(el);
 302         el->el_map.current = el->el_map.key;
 303         return CC_CURSOR;
 304 }
 305
 306
 307 /* vi_replace_char():
 308  *      Vi replace character under the cursor with the next character typed
 309  *      [r]
 310  */
 311 protected el_action_t
 312 /*ARGSUSED*/
 313 vi_replace_char(EditLine *el, Int c __attribute__((__unused__)))
 314 {
 315
 316         if (el->el_line.cursor >= el->el_line.lastchar)
 317                 return CC_ERROR;
 318
 319         el->el_map.current = el->el_map.key;
 320         el->el_state.inputmode = MODE_REPLACE_1;
 321         cv_undo(el);
 322         return CC_ARGHACK;
 323 }
 324
 325
 326 /* vi_replace_mode():
 327  *      Vi enter replace mode
 328  *      [R]
 329  */
 330 protected el_action_t
 331 /*ARGSUSED*/
 332 vi_replace_mode(EditLine *el, Int c __attribute__((__unused__)))
 333 {
 334
 335         el->el_map.current = el->el_map.key;
 336         el->el_state.inputmode = MODE_REPLACE;
 337         cv_undo(el);
 338         return CC_NORM;
 339 }
 340
 341
 342 /* vi_substitute_char():
 343  *      Vi replace character under the cursor and enter insert mode
 344  *      [s]
 345  */
 346 protected el_action_t
 347 /*ARGSUSED*/
 348 vi_substitute_char(EditLine *el, Int c __attribute__((__unused__)))
 349 {
 350
 351         c_delafter(el, el->el_state.argument);
 352         el->el_map.current = el->el_map.key;
 353         return CC_REFRESH;
 354 }
 355
 356
 357 /* vi_substitute_line():
 358  *      Vi substitute entire line
 359  *      [S]
 360  */
 361 protected el_action_t
 362 /*ARGSUSED*/
 363 vi_substitute_line(EditLine *el, Int c __attribute__((__unused__)))
 364 {
 365
 366         cv_undo(el);
 367         cv_yank(el, el->el_line.buffer,
 368             (int)(el->el_line.lastchar - el->el_line.buffer));
 369         (void) em_kill_line(el, 0);
 370         el->el_map.current = el->el_map.key;
 371         return CC_REFRESH;
 372 }
 373
 374
 375 /* vi_change_to_eol():
 376  *      Vi change to end of line
 377  *      [C]
 378  */
 379 protected el_action_t
 380 /*ARGSUSED*/
 381 vi_change_to_eol(EditLine *el, Int c __attribute__((__unused__)))
 382 {
 383
 384         cv_undo(el);
 385         cv_yank(el, el->el_line.cursor,
 386             (int)(el->el_line.lastchar - el->el_line.cursor));
 387         (void) ed_kill_line(el, 0);
 388         el->el_map.current = el->el_map.key;
 389         return CC_REFRESH;
 390 }
 391
 392
 393 /* vi_insert():
 394  *      Vi enter insert mode
 395  *      [i]
 396  */
 397 protected el_action_t
 398 /*ARGSUSED*/
 399 vi_insert(EditLine *el, Int c __attribute__((__unused__)))
 400 {
 401
 402         el->el_map.current = el->el_map.key;
 403         cv_undo(el);
 404         return CC_NORM;
 405 }
 406
 407
 408 /* vi_add():
 409  *      Vi enter insert mode after the cursor
 410  *      [a]
 411  */
 412 protected el_action_t
 413 /*ARGSUSED*/
 414 vi_add(EditLine *el, Int c __attribute__((__unused__)))
 415 {
 416         int ret;
 417
 418         el->el_map.current = el->el_map.key;
 419         if (el->el_line.cursor < el->el_line.lastchar) {
 420                 el->el_line.cursor++;
 421                 if (el->el_line.cursor > el->el_line.lastchar)
 422                         el->el_line.cursor = el->el_line.lastchar;
 423                 ret = CC_CURSOR;
 424         } else
 425                 ret = CC_NORM;
 426
 427         cv_undo(el);
 428
 429         return (el_action_t)ret;
 430 }
 431
 432
 433 /* vi_add_at_eol():
 434  *      Vi enter insert mode at end of line
 435  *      [A]
 436  */
 437 protected el_action_t
 438 /*ARGSUSED*/
 439 vi_add_at_eol(EditLine *el, Int c __attribute__((__unused__)))
 440 {
 441
 442         el->el_map.current = el->el_map.key;
 443         el->el_line.cursor = el->el_line.lastchar;
 444         cv_undo(el);
 445         return CC_CURSOR;
 446 }
 447
 448
 449 /* vi_delete_meta():
 450  *      Vi delete prefix command
 451  *      [d]
 452  */
 453 protected el_action_t
 454 /*ARGSUSED*/
 455 vi_delete_meta(EditLine *el, Int c __attribute__((__unused__)))
 456 {
 457
 458         return cv_action(el, DELETE);
 459 }
 460
 461
 462 /* vi_end_big_word():
 463  *      Vi move to the end of the current space delimited word
 464  *      [E]
 465  */
 466 protected el_action_t
 467 /*ARGSUSED*/
 468 vi_end_big_word(EditLine *el, Int c __attribute__((__unused__)))
 469 {
 470
 471         if (el->el_line.cursor == el->el_line.lastchar)
 472                 return CC_ERROR;
 473
 474         el->el_line.cursor = cv__endword(el->el_line.cursor,
 475             el->el_line.lastchar, el->el_state.argument, cv__isWord);
 476
 477         if (el->el_chared.c_vcmd.action != NOP) {
 478                 el->el_line.cursor++;
 479                 cv_delfini(el);
 480                 return CC_REFRESH;
 481         }
 482         return CC_CURSOR;
 483 }
 484
 485
 486 /* vi_end_word():
 487  *      Vi move to the end of the current word
 488  *      [e]
 489  */
 490 protected el_action_t
 491 /*ARGSUSED*/
 492 vi_end_word(EditLine *el, Int c __attribute__((__unused__)))
 493 {
 494
 495         if (el->el_line.cursor == el->el_line.lastchar)
 496                 return CC_ERROR;
 497
 498         el->el_line.cursor = cv__endword(el->el_line.cursor,
 499             el->el_line.lastchar, el->el_state.argument, cv__isword);
 500
 501         if (el->el_chared.c_vcmd.action != NOP) {
 502                 el->el_line.cursor++;
 503                 cv_delfini(el);
 504                 return CC_REFRESH;
 505         }
 506         return CC_CURSOR;
 507 }
 508
 509
 510 /* vi_undo():
 511  *      Vi undo last change
 512  *      [u]
 513  */
 514 protected el_action_t
 515 /*ARGSUSED*/
 516 vi_undo(EditLine *el, Int c __attribute__((__unused__)))
 517 {
 518         c_undo_t un = el->el_chared.c_undo;
 519
 520         if (un.len == -1)
 521                 return CC_ERROR;
 522
 523         /* switch line buffer and undo buffer */
 524         el->el_chared.c_undo.buf = el->el_line.buffer;
 525         el->el_chared.c_undo.len = el->el_line.lastchar - el->el_line.buffer;
 526         el->el_chared.c_undo.cursor =
 527             (int)(el->el_line.cursor - el->el_line.buffer);
 528         el->el_line.limit = un.buf + (el->el_line.limit - el->el_line.buffer);
 529         el->el_line.buffer = un.buf;
 530         el->el_line.cursor = un.buf + un.cursor;
 531         el->el_line.lastchar = un.buf + un.len;
 532
 533         return CC_REFRESH;
 534 }
 535
 536
 537 /* vi_command_mode():
 538  *      Vi enter command mode (use alternative key bindings)
 539  *      [<ESC>]
 540  */
 541 protected el_action_t
 542 /*ARGSUSED*/
 543 vi_command_mode(EditLine *el, Int c __attribute__((__unused__)))
 544 {
 545
 546         /* [Esc] cancels pending action */
 547         el->el_chared.c_vcmd.action = NOP;
 548         el->el_chared.c_vcmd.pos = 0;
 549
 550         el->el_state.doingarg = 0;
 551
 552         el->el_state.inputmode = MODE_INSERT;
 553         el->el_map.current = el->el_map.alt;
 554 #ifdef VI_MOVE
 555         if (el->el_line.cursor > el->el_line.buffer)
 556                 el->el_line.cursor--;
 557 #endif
 558         return CC_CURSOR;
 559 }
 560
 561
 562 /* vi_zero():
 563  *      Vi move to the beginning of line
 564  *      [0]
 565  */
 566 protected el_action_t
 567 vi_zero(EditLine *el, Int c)
 568 {
 569
 570         if (el->el_state.doingarg)
 571                 return ed_argument_digit(el, c);
 572
 573         el->el_line.cursor = el->el_line.buffer;
 574         if (el->el_chared.c_vcmd.action != NOP) {
 575                 cv_delfini(el);
 576                 return CC_REFRESH;
 577         }
 578         return CC_CURSOR;
 579 }
 580
 581
 582 /* vi_delete_prev_char():
 583  *      Vi move to previous character (backspace)
 584  *      [^H] in insert mode only
 585  */
 586 protected el_action_t
 587 /*ARGSUSED*/
 588 vi_delete_prev_char(EditLine *el, Int c __attribute__((__unused__)))
 589 {
 590
 591         if (el->el_line.cursor <= el->el_line.buffer)
 592                 return CC_ERROR;
 593
 594         c_delbefore1(el);
 595         el->el_line.cursor--;
 596         return CC_REFRESH;
 597 }
 598
 599
 600 /* vi_list_or_eof():
 601  *      Vi list choices for completion or indicate end of file if empty line
 602  *      [^D]
 603  */
 604 protected el_action_t
 605 /*ARGSUSED*/
 606 vi_list_or_eof(EditLine *el, Int c)
 607 {
 608
 609         if (el->el_line.cursor == el->el_line.lastchar) {
 610                 if (el->el_line.cursor == el->el_line.buffer) {
 611                         terminal_writec(el, c); /* then do a EOF */
 612                         return CC_EOF;
 613                 } else {
 614                         /*
 615                          * Here we could list completions, but it is an
 616                          * error right now
 617                          */
 618                         terminal_beep(el);
 619                         return CC_ERROR;
 620                 }
 621         } else {
 622 #ifdef notyet
 623                 re_goto_bottom(el);
 624                 *el->el_line.lastchar = '\0';   /* just in case */
 625                 return CC_LIST_CHOICES;
 626 #else
 627                 /*
 628                  * Just complain for now.
 629                  */
 630                 terminal_beep(el);
 631                 return CC_ERROR;
 632 #endif
 633         }
 634 }
 635
 636
 637 /* vi_kill_line_prev():
 638  *      Vi cut from beginning of line to cursor
 639  *      [^U]
 640  */
 641 protected el_action_t
 642 /*ARGSUSED*/
 643 vi_kill_line_prev(EditLine *el, Int c __attribute__((__unused__)))
 644 {
 645         Char *kp, *cp;
 646
 647         cp = el->el_line.buffer;
 648         kp = el->el_chared.c_kill.buf;
 649         while (cp < el->el_line.cursor)
 650                 *kp++ = *cp++;  /* copy it */
 651         el->el_chared.c_kill.last = kp;
 652         c_delbefore(el, (int)(el->el_line.cursor - el->el_line.buffer));
 653         el->el_line.cursor = el->el_line.buffer;        /* zap! */
 654         return CC_REFRESH;
 655 }
 656
 657
 658 /* vi_search_prev():
 659  *      Vi search history previous
 660  *      [?]
 661  */
 662 protected el_action_t
 663 /*ARGSUSED*/
 664 vi_search_prev(EditLine *el, Int c __attribute__((__unused__)))
 665 {
 666
 667         return cv_search(el, ED_SEARCH_PREV_HISTORY);
 668 }
 669
 670
 671 /* vi_search_next():
 672  *      Vi search history next
 673  *      [/]
 674  */
 675 protected el_action_t
 676 /*ARGSUSED*/
 677 vi_search_next(EditLine *el, Int c __attribute__((__unused__)))
 678 {
 679
 680         return cv_search(el, ED_SEARCH_NEXT_HISTORY);
 681 }
 682
 683
 684 /* vi_repeat_search_next():
 685  *      Vi repeat current search in the same search direction
 686  *      [n]
 687  */
 688 protected el_action_t
 689 /*ARGSUSED*/
 690 vi_repeat_search_next(EditLine *el, Int c __attribute__((__unused__)))
 691 {
 692
 693         if (el->el_search.patlen == 0)
 694                 return CC_ERROR;
 695         else
 696                 return cv_repeat_srch(el, el->el_search.patdir);
 697 }
 698
 699
 700 /* vi_repeat_search_prev():
 701  *      Vi repeat current search in the opposite search direction
 702  *      [N]
 703  */
 704 /*ARGSUSED*/
 705 protected el_action_t
 706 vi_repeat_search_prev(EditLine *el, Int c __attribute__((__unused__)))
 707 {
 708
 709         if (el->el_search.patlen == 0)
 710                 return CC_ERROR;
 711         else
 712                 return (cv_repeat_srch(el,
 713                     el->el_search.patdir == ED_SEARCH_PREV_HISTORY ?
 714                     ED_SEARCH_NEXT_HISTORY : ED_SEARCH_PREV_HISTORY));
 715 }
 716
 717
 718 /* vi_next_char():
 719  *      Vi move to the character specified next
 720  *      [f]
 721  */
 722 protected el_action_t
 723 /*ARGSUSED*/
 724 vi_next_char(EditLine *el, Int c __attribute__((__unused__)))
 725 {
 726         return cv_csearch(el, CHAR_FWD, -1, el->el_state.argument, 0);
 727 }
 728
 729
 730 /* vi_prev_char():
 731  *      Vi move to the character specified previous
 732  *      [F]
 733  */
 734 protected el_action_t
 735 /*ARGSUSED*/
 736 vi_prev_char(EditLine *el, Int c __attribute__((__unused__)))
 737 {
 738         return cv_csearch(el, CHAR_BACK, -1, el->el_state.argument, 0);
 739 }
 740
 741
 742 /* vi_to_next_char():
 743  *      Vi move up to the character specified next
 744  *      [t]
 745  */
 746 protected el_action_t
 747 /*ARGSUSED*/
 748 vi_to_next_char(EditLine *el, Int c __attribute__((__unused__)))
 749 {
 750         return cv_csearch(el, CHAR_FWD, -1, el->el_state.argument, 1);
 751 }
 752
 753
 754 /* vi_to_prev_char():
 755  *      Vi move up to the character specified previous
 756  *      [T]
 757  */
 758 protected el_action_t
 759 /*ARGSUSED*/
 760 vi_to_prev_char(EditLine *el, Int c __attribute__((__unused__)))
 761 {
 762         return cv_csearch(el, CHAR_BACK, -1, el->el_state.argument, 1);
 763 }
 764
 765
 766 /* vi_repeat_next_char():
 767  *      Vi repeat current character search in the same search direction
 768  *      [;]
 769  */
 770 protected el_action_t
 771 /*ARGSUSED*/
 772 vi_repeat_next_char(EditLine *el, Int c __attribute__((__unused__)))
 773 {
 774
 775         return cv_csearch(el, el->el_search.chadir, el->el_search.chacha,
 776                 el->el_state.argument, el->el_search.chatflg);
 777 }
 778
 779
 780 /* vi_repeat_prev_char():
 781  *      Vi repeat current character search in the opposite search direction
 782  *      [,]
 783  */
 784 protected el_action_t
 785 /*ARGSUSED*/
 786 vi_repeat_prev_char(EditLine *el, Int c __attribute__((__unused__)))
 787 {
 788         el_action_t r;
 789         int dir = el->el_search.chadir;
 790
 791         r = cv_csearch(el, -dir, el->el_search.chacha,
 792                 el->el_state.argument, el->el_search.chatflg);
 793         el->el_search.chadir = dir;
 794         return r;
 795 }
 796
 797
 798 /* vi_match():
 799  *      Vi go to matching () {} or []
 800  *      [%]
 801  */
 802 protected el_action_t
 803 /*ARGSUSED*/
 804 vi_match(EditLine *el, Int c __attribute__((__unused__)))
 805 {
 806         const Char match_chars[] = STR("()[]{}");
 807         Char *cp;
 808         size_t delta, i, count;
 809         Char o_ch, c_ch;
 810
 811         *el->el_line.lastchar = '\0';           /* just in case */
 812
 813         i = Strcspn(el->el_line.cursor, match_chars);
 814         o_ch = el->el_line.cursor[i];
 815         if (o_ch == 0)
 816                 return CC_ERROR;
 817         delta = (size_t)(Strchr(match_chars, o_ch) - match_chars);
 818         c_ch = match_chars[delta ^ 1];
 819         count = 1;
 820         delta = 1 - (delta & 1) * 2;
 821
 822         for (cp = &el->el_line.cursor[i]; count; ) {
 823                 cp += delta;
 824                 if (cp < el->el_line.buffer || cp >= el->el_line.lastchar)
 825                         return CC_ERROR;
 826                 if (*cp == o_ch)
 827                         count++;
 828                 else if (*cp == c_ch)
 829                         count--;
 830         }
 831
 832         el->el_line.cursor = cp;
 833
 834         if (el->el_chared.c_vcmd.action != NOP) {
 835                 /* NB posix says char under cursor should NOT be deleted
 836                    for -ve delta - this is different to netbsd vi. */
 837                 if (delta > 0)
 838                         el->el_line.cursor++;
 839                 cv_delfini(el);
 840                 return CC_REFRESH;
 841         }
 842         return CC_CURSOR;
 843 }
 844
 845 /* vi_undo_line():
 846  *      Vi undo all changes to line
 847  *      [U]
 848  */
 849 protected el_action_t
 850 /*ARGSUSED*/
 851 vi_undo_line(EditLine *el, Int c __attribute__((__unused__)))
 852 {
 853
 854         cv_undo(el);
 855         return hist_get(el);
 856 }
 857
 858 /* vi_to_column():
 859  *      Vi go to specified column
 860  *      [|]
 861  * NB netbsd vi goes to screen column 'n', posix says nth character
 862  */
 863 protected el_action_t
 864 /*ARGSUSED*/
 865 vi_to_column(EditLine *el, Int c __attribute__((__unused__)))
 866 {
 867
 868         el->el_line.cursor = el->el_line.buffer;
 869         el->el_state.argument--;
 870         return ed_next_char(el, 0);
 871 }
 872
 873 /* vi_yank_end():
 874  *      Vi yank to end of line
 875  *      [Y]
 876  */
 877 protected el_action_t
 878 /*ARGSUSED*/
 879 vi_yank_end(EditLine *el, Int c __attribute__((__unused__)))
 880 {
 881
 882         cv_yank(el, el->el_line.cursor,
 883             (int)(el->el_line.lastchar - el->el_line.cursor));
 884         return CC_REFRESH;
 885 }
 886
 887 /* vi_yank():
 888  *      Vi yank
 889  *      [y]
 890  */
 891 protected el_action_t
 892 /*ARGSUSED*/
 893 vi_yank(EditLine *el, Int c __attribute__((__unused__)))
 894 {
 895
 896         return cv_action(el, YANK);
 897 }
 898
 899 /* vi_comment_out():
 900  *      Vi comment out current command
 901  *      [#]
 902  */
 903 protected el_action_t
 904 /*ARGSUSED*/
 905 vi_comment_out(EditLine *el, Int c __attribute__((__unused__)))
 906 {
 907
 908         el->el_line.cursor = el->el_line.buffer;
 909         c_insert(el, 1);
 910         *el->el_line.cursor = '#';
 911         re_refresh(el);
 912         return ed_newline(el, 0);
 913 }
 914
 915 /* vi_alias():
 916  *      Vi include shell alias
 917  *      [@]
 918  * NB: posix implies that we should enter insert mode, however
 919  * this is against historical precedent...
 920  */
 921 protected el_action_t
 922 /*ARGSUSED*/
 923 vi_alias(EditLine *el __attribute__((__unused__)), Int c __attribute__((__unused__)))
 924 {
 925         char alias_name[3];
 926         const char *alias_text;
 927
 928         if (el->el_chared.c_aliasfun == NULL)
 929                 return CC_ERROR;
 930
 931         alias_name[0] = '_';
 932         alias_name[2] = 0;
 933         if (el_getc(el, &alias_name[1]) != 1)
 934                 return CC_ERROR;
 935
 936         alias_text = (*el->el_chared.c_aliasfun)(el->el_chared.c_aliasarg,
 937             alias_name);
 938         if (alias_text != NULL)
 939                 FUN(el,push)(el, ct_decode_string(alias_text, &el->el_scratch));
 940         return CC_NORM;
 941 }
 942
 943 /* vi_to_history_line():
 944  *      Vi go to specified history file line.
 945  *      [G]
 946  */
 947 protected el_action_t
 948 /*ARGSUSED*/
 949 vi_to_history_line(EditLine *el, Int c __attribute__((__unused__)))
 950 {
 951         int sv_event_no = el->el_history.eventno;
 952         el_action_t rval;
 953
 954
 955         if (el->el_history.eventno == 0) {
 956                  (void) Strncpy(el->el_history.buf, el->el_line.buffer,
 957                      EL_BUFSIZ);
 958                  el->el_history.last = el->el_history.buf +
 959                          (el->el_line.lastchar - el->el_line.buffer);
 960         }
 961
 962         /* Lack of a 'count' means oldest, not 1 */
 963         if (!el->el_state.doingarg) {
 964                 el->el_history.eventno = 0x7fffffff;
 965                 hist_get(el);
 966         } else {
 967                 /* This is brain dead, all the rest of this code counts
 968                  * upwards going into the past.  Here we need count in the
 969                  * other direction (to match the output of fc -l).
 970                  * I could change the world, but this seems to suffice.
 971                  */
 972                 el->el_history.eventno = 1;
 973                 if (hist_get(el) == CC_ERROR)
 974                         return CC_ERROR;
 975                 el->el_history.eventno = 1 + el->el_history.ev.num
 976                                         - el->el_state.argument;
 977                 if (el->el_history.eventno < 0) {
 978                         el->el_history.eventno = sv_event_no;
 979                         return CC_ERROR;
 980                 }
 981         }
 982         rval = hist_get(el);
 983         if (rval == CC_ERROR)
 984                 el->el_history.eventno = sv_event_no;
 985         return rval;
 986 }
 987
 988 /* vi_histedit():
 989  *      Vi edit history line with vi
 990  *      [v]
 991  */
 992 protected el_action_t
 993 /*ARGSUSED*/
 994 vi_histedit(EditLine *el, Int c __attribute__((__unused__)))
 995 {
 996         int fd;
 997         pid_t pid;
 998         ssize_t st;
 999         int status;
1000         char tempfile[] = "/tmp/histedit.XXXXXXXXXX";
1001         char *cp = NULL;
1002         size_t len;
1003         Char *line = NULL;
1004
1005         if (el->el_state.doingarg) {
1006                 if (vi_to_history_line(el, 0) == CC_ERROR)
1007                         return CC_ERROR;
1008         }
1009
1010         fd = mkstemp(tempfile);
1011         if (fd < 0)
1012                 return CC_ERROR;
1013         len = (size_t)(el->el_line.lastchar - el->el_line.buffer);
1014 #define TMP_BUFSIZ (EL_BUFSIZ * MB_LEN_MAX)
1015         cp = el_malloc(TMP_BUFSIZ * sizeof(*cp));
1016         if (cp == NULL)
1017                 goto error;
1018         line = el_malloc(len * sizeof(*line) + 1);
1019         if (line == NULL)
1020                 goto error;
1021         Strncpy(line, el->el_line.buffer, len);
1022         line[len] = '\0';
1023         ct_wcstombs(cp, line, TMP_BUFSIZ - 1);
1024         cp[TMP_BUFSIZ - 1] = '\0';
1025         len = strlen(cp);
1026         write(fd, cp, len);
1027         write(fd, "\n", (size_t)1);
1028         pid = fork();
1029         switch (pid) {
1030         case -1:
1031                 goto error;
1032         case 0:
1033                 close(fd);
1034                 execlp("vi", "vi", tempfile, (char *)NULL);
1035                 exit(0);
1036                 /*NOTREACHED*/
1037         default:
1038                 while (waitpid(pid, &status, 0) != pid)
1039                         continue;
1040                 lseek(fd, (off_t)0, SEEK_SET);
1041                 st = read(fd, cp, TMP_BUFSIZ);
1042                 if (st > 0) {
1043                         len = (size_t)(el->el_line.lastchar -
1044                             el->el_line.buffer);
1045                         len = ct_mbstowcs(el->el_line.buffer, cp, len);
1046                         if (len > 0 && el->el_line.buffer[len -1] == '\n')
1047                                 --len;
1048                 }
1049                 else
1050                         len = 0;
1051                 el->el_line.cursor = el->el_line.buffer;
1052                 el->el_line.lastchar = el->el_line.buffer + len;
1053                 el_free(cp);
1054                 el_free(line);
1055                 break;
1056         }
1057
1058         close(fd);
1059         unlink(tempfile);
1060         /* return CC_REFRESH; */
1061         return ed_newline(el, 0);
1062 error:
1063         el_free(line);
1064         el_free(cp);
1065         close(fd);
1066         unlink(tempfile);
1067         return CC_ERROR;
1068 }
1069
1070 /* vi_history_word():
1071  *      Vi append word from previous input line
1072  *      [_]
1073  * Who knows where this one came from!
1074  * '_' in vi means 'entire current line', so 'cc' is a synonym for 'c_'
1075  */
1076 protected el_action_t
1077 /*ARGSUSED*/
1078 vi_history_word(EditLine *el, Int c __attribute__((__unused__)))
1079 {
1080         const Char *wp = HIST_FIRST(el);
1081         const Char *wep, *wsp;
1082         int len;
1083         Char *cp;
1084         const Char *lim;
1085
1086         if (wp == NULL)
1087                 return CC_ERROR;
1088
1089         wep = wsp = 0;
1090         do {
1091                 while (Isspace(*wp))
1092                         wp++;
1093                 if (*wp == 0)
1094                         break;
1095                 wsp = wp;
1096                 while (*wp && !Isspace(*wp))
1097                         wp++;
1098                 wep = wp;
1099         } while ((!el->el_state.doingarg || --el->el_state.argument > 0)
1100             && *wp != 0);
1101
1102         if (wsp == 0 || (el->el_state.doingarg && el->el_state.argument != 0))
1103                 return CC_ERROR;
1104
1105         cv_undo(el);
1106         len = (int)(wep - wsp);
1107         if (el->el_line.cursor < el->el_line.lastchar)
1108                 el->el_line.cursor++;
1109         c_insert(el, len + 1);
1110         cp = el->el_line.cursor;
1111         lim = el->el_line.limit;
1112         if (cp < lim)
1113                 *cp++ = ' ';
1114         while (wsp < wep && cp < lim)
1115                 *cp++ = *wsp++;
1116         el->el_line.cursor = cp;
1117
1118         el->el_map.current = el->el_map.key;
1119         return CC_REFRESH;
1120 }
1121
1122 /* vi_redo():
1123  *      Vi redo last non-motion command
1124  *      [.]
1125  */
1126 protected el_action_t
1127 /*ARGSUSED*/
1128 vi_redo(EditLine *el, Int c __attribute__((__unused__)))
1129 {
1130         c_redo_t *r = &el->el_chared.c_redo;
1131
1132         if (!el->el_state.doingarg && r->count) {
1133                 el->el_state.doingarg = 1;
1134                 el->el_state.argument = r->count;
1135         }
1136
1137         el->el_chared.c_vcmd.pos = el->el_line.cursor;
1138         el->el_chared.c_vcmd.action = r->action;
1139         if (r->pos != r->buf) {
1140                 if (r->pos + 1 > r->lim)
1141                         /* sanity */
1142                         r->pos = r->lim - 1;
1143                 r->pos[0] = 0;
1144                 FUN(el,push)(el, r->buf);
1145         }
1146
1147         el->el_state.thiscmd = r->cmd;
1148         el->el_state.thisch = r->ch;
1149         return (*el->el_map.func[r->cmd])(el, r->ch);
1150 }