vi.c revision 1.27
1 /* $NetBSD: vi.c,v 1.27 2006/10/22 07:48:13 mrg 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 <sys/wait.h> 39 40 #if !defined(lint) && !defined(SCCSID) 41 #if 0 42 static char sccsid[] = "@(#)vi.c 8.1 (Berkeley) 6/4/93"; 43 #else 44 __RCSID("$NetBSD: vi.c,v 1.27 2006/10/22 07:48:13 mrg Exp $"); 45 #endif 46 #endif /* not lint && not SCCSID */ 47 48 /* 49 * vi.c: Vi mode commands. 50 */ 51 #include "el.h" 52 53 private el_action_t cv_action(EditLine *, int); 54 private el_action_t cv_paste(EditLine *, int); 55 56 /* cv_action(): 57 * Handle vi actions. 58 */ 59 private el_action_t 60 cv_action(EditLine *el, int c) 61 { 62 63 if (el->el_chared.c_vcmd.action != NOP) { 64 /* 'cc', 'dd' and (possibly) friends */ 65 if (c != el->el_chared.c_vcmd.action) 66 return CC_ERROR; 67 68 if (!(c & YANK)) 69 cv_undo(el); 70 cv_yank(el, el->el_line.buffer, 71 el->el_line.lastchar - el->el_line.buffer); 72 el->el_chared.c_vcmd.action = NOP; 73 el->el_chared.c_vcmd.pos = 0; 74 if (!(c & YANK)) { 75 el->el_line.lastchar = el->el_line.buffer; 76 el->el_line.cursor = el->el_line.buffer; 77 } 78 if (c & INSERT) 79 el->el_map.current = el->el_map.key; 80 81 return (CC_REFRESH); 82 } 83 el->el_chared.c_vcmd.pos = el->el_line.cursor; 84 el->el_chared.c_vcmd.action = c; 85 return (CC_ARGHACK); 86 } 87 88 /* cv_paste(): 89 * Paste previous deletion before or after the cursor 90 */ 91 private el_action_t 92 cv_paste(EditLine *el, int c) 93 { 94 c_kill_t *k = &el->el_chared.c_kill; 95 int len = k->last - k->buf; 96 97 if (k->buf == NULL || len == 0) 98 return (CC_ERROR); 99 #ifdef DEBUG_PASTE 100 (void) fprintf(el->el_errfile, "Paste: \"%.*s\"\n", len, k->buf); 101 #endif 102 103 cv_undo(el); 104 105 if (!c && el->el_line.cursor < el->el_line.lastchar) 106 el->el_line.cursor++; 107 108 c_insert(el, len); 109 if (el->el_line.cursor + len > el->el_line.lastchar) 110 return (CC_ERROR); 111 (void) memcpy(el->el_line.cursor, k->buf, len +0u); 112 113 return (CC_REFRESH); 114 } 115 116 117 /* vi_paste_next(): 118 * Vi paste previous deletion to the right of the cursor 119 * [p] 120 */ 121 protected el_action_t 122 /*ARGSUSED*/ 123 vi_paste_next(EditLine *el, int c __attribute__((__unused__))) 124 { 125 126 return (cv_paste(el, 0)); 127 } 128 129 130 /* vi_paste_prev(): 131 * Vi paste previous deletion to the left of the cursor 132 * [P] 133 */ 134 protected el_action_t 135 /*ARGSUSED*/ 136 vi_paste_prev(EditLine *el, int c __attribute__((__unused__))) 137 { 138 139 return (cv_paste(el, 1)); 140 } 141 142 143 /* vi_prev_big_word(): 144 * Vi move to the previous space delimited word 145 * [B] 146 */ 147 protected el_action_t 148 /*ARGSUSED*/ 149 vi_prev_big_word(EditLine *el, int c) 150 { 151 152 if (el->el_line.cursor == el->el_line.buffer) 153 return (CC_ERROR); 154 155 el->el_line.cursor = cv_prev_word(el->el_line.cursor, 156 el->el_line.buffer, 157 el->el_state.argument, 158 cv__isWord); 159 160 if (el->el_chared.c_vcmd.action != NOP) { 161 cv_delfini(el); 162 return (CC_REFRESH); 163 } 164 return (CC_CURSOR); 165 } 166 167 168 /* vi_prev_word(): 169 * Vi move to the previous word 170 * [b] 171 */ 172 protected el_action_t 173 /*ARGSUSED*/ 174 vi_prev_word(EditLine *el, int c __attribute__((__unused__))) 175 { 176 177 if (el->el_line.cursor == el->el_line.buffer) 178 return (CC_ERROR); 179 180 el->el_line.cursor = cv_prev_word(el->el_line.cursor, 181 el->el_line.buffer, 182 el->el_state.argument, 183 cv__isword); 184 185 if (el->el_chared.c_vcmd.action != NOP) { 186 cv_delfini(el); 187 return (CC_REFRESH); 188 } 189 return (CC_CURSOR); 190 } 191 192 193 /* vi_next_big_word(): 194 * Vi move to the next space delimited word 195 * [W] 196 */ 197 protected el_action_t 198 /*ARGSUSED*/ 199 vi_next_big_word(EditLine *el, int c) 200 { 201 202 if (el->el_line.cursor >= el->el_line.lastchar - 1) 203 return (CC_ERROR); 204 205 el->el_line.cursor = cv_next_word(el, el->el_line.cursor, 206 el->el_line.lastchar, el->el_state.argument, cv__isWord); 207 208 if (el->el_map.type == MAP_VI) 209 if (el->el_chared.c_vcmd.action != NOP) { 210 cv_delfini(el); 211 return (CC_REFRESH); 212 } 213 return (CC_CURSOR); 214 } 215 216 217 /* vi_next_word(): 218 * Vi move to the next word 219 * [w] 220 */ 221 protected el_action_t 222 /*ARGSUSED*/ 223 vi_next_word(EditLine *el, int c __attribute__((__unused__))) 224 { 225 226 if (el->el_line.cursor >= el->el_line.lastchar - 1) 227 return (CC_ERROR); 228 229 el->el_line.cursor = cv_next_word(el, el->el_line.cursor, 230 el->el_line.lastchar, el->el_state.argument, cv__isword); 231 232 if (el->el_map.type == MAP_VI) 233 if (el->el_chared.c_vcmd.action != NOP) { 234 cv_delfini(el); 235 return (CC_REFRESH); 236 } 237 return (CC_CURSOR); 238 } 239 240 241 /* vi_change_case(): 242 * Vi change case of character under the cursor and advance one character 243 * [~] 244 */ 245 protected el_action_t 246 vi_change_case(EditLine *el, int c) 247 { 248 int i; 249 250 if (el->el_line.cursor >= el->el_line.lastchar) 251 return (CC_ERROR); 252 cv_undo(el); 253 for (i = 0; i < el->el_state.argument; i++) { 254 255 c = *(unsigned char *)el->el_line.cursor; 256 if (isupper(c)) 257 *el->el_line.cursor = tolower(c); 258 else if (islower(c)) 259 *el->el_line.cursor = toupper(c); 260 261 if (++el->el_line.cursor >= el->el_line.lastchar) { 262 el->el_line.cursor--; 263 re_fastaddc(el); 264 break; 265 } 266 re_fastaddc(el); 267 } 268 return CC_NORM; 269 } 270 271 272 /* vi_change_meta(): 273 * Vi change prefix command 274 * [c] 275 */ 276 protected el_action_t 277 /*ARGSUSED*/ 278 vi_change_meta(EditLine *el, int c __attribute__((__unused__))) 279 { 280 281 /* 282 * Delete with insert == change: first we delete and then we leave in 283 * insert mode. 284 */ 285 return (cv_action(el, DELETE | INSERT)); 286 } 287 288 289 /* vi_insert_at_bol(): 290 * Vi enter insert mode at the beginning of line 291 * [I] 292 */ 293 protected el_action_t 294 /*ARGSUSED*/ 295 vi_insert_at_bol(EditLine *el, int c __attribute__((__unused__))) 296 { 297 298 el->el_line.cursor = el->el_line.buffer; 299 cv_undo(el); 300 el->el_map.current = el->el_map.key; 301 return (CC_CURSOR); 302 } 303 304 305 /* vi_replace_char(): 306 * Vi replace character under the cursor with the next character typed 307 * [r] 308 */ 309 protected el_action_t 310 /*ARGSUSED*/ 311 vi_replace_char(EditLine *el, int c __attribute__((__unused__))) 312 { 313 314 if (el->el_line.cursor >= el->el_line.lastchar) 315 return CC_ERROR; 316 317 el->el_map.current = el->el_map.key; 318 el->el_state.inputmode = MODE_REPLACE_1; 319 cv_undo(el); 320 return (CC_ARGHACK); 321 } 322 323 324 /* vi_replace_mode(): 325 * Vi enter replace mode 326 * [R] 327 */ 328 protected el_action_t 329 /*ARGSUSED*/ 330 vi_replace_mode(EditLine *el, int c __attribute__((__unused__))) 331 { 332 333 el->el_map.current = el->el_map.key; 334 el->el_state.inputmode = MODE_REPLACE; 335 cv_undo(el); 336 return (CC_NORM); 337 } 338 339 340 /* vi_substitute_char(): 341 * Vi replace character under the cursor and enter insert mode 342 * [s] 343 */ 344 protected el_action_t 345 /*ARGSUSED*/ 346 vi_substitute_char(EditLine *el, int c __attribute__((__unused__))) 347 { 348 349 c_delafter(el, el->el_state.argument); 350 el->el_map.current = el->el_map.key; 351 return (CC_REFRESH); 352 } 353 354 355 /* vi_substitute_line(): 356 * Vi substitute entire line 357 * [S] 358 */ 359 protected el_action_t 360 /*ARGSUSED*/ 361 vi_substitute_line(EditLine *el, int c __attribute__((__unused__))) 362 { 363 364 cv_undo(el); 365 cv_yank(el, el->el_line.buffer, 366 el->el_line.lastchar - el->el_line.buffer); 367 (void) em_kill_line(el, 0); 368 el->el_map.current = el->el_map.key; 369 return (CC_REFRESH); 370 } 371 372 373 /* vi_change_to_eol(): 374 * Vi change to end of line 375 * [C] 376 */ 377 protected el_action_t 378 /*ARGSUSED*/ 379 vi_change_to_eol(EditLine *el, int c __attribute__((__unused__))) 380 { 381 382 cv_undo(el); 383 cv_yank(el, el->el_line.cursor, 384 el->el_line.lastchar - el->el_line.cursor); 385 (void) ed_kill_line(el, 0); 386 el->el_map.current = el->el_map.key; 387 return (CC_REFRESH); 388 } 389 390 391 /* vi_insert(): 392 * Vi enter insert mode 393 * [i] 394 */ 395 protected el_action_t 396 /*ARGSUSED*/ 397 vi_insert(EditLine *el, int c __attribute__((__unused__))) 398 { 399 400 el->el_map.current = el->el_map.key; 401 cv_undo(el); 402 return (CC_NORM); 403 } 404 405 406 /* vi_add(): 407 * Vi enter insert mode after the cursor 408 * [a] 409 */ 410 protected el_action_t 411 /*ARGSUSED*/ 412 vi_add(EditLine *el, int c __attribute__((__unused__))) 413 { 414 int ret; 415 416 el->el_map.current = el->el_map.key; 417 if (el->el_line.cursor < el->el_line.lastchar) { 418 el->el_line.cursor++; 419 if (el->el_line.cursor > el->el_line.lastchar) 420 el->el_line.cursor = el->el_line.lastchar; 421 ret = CC_CURSOR; 422 } else 423 ret = CC_NORM; 424 425 cv_undo(el); 426 427 return (ret); 428 } 429 430 431 /* vi_add_at_eol(): 432 * Vi enter insert mode at end of line 433 * [A] 434 */ 435 protected el_action_t 436 /*ARGSUSED*/ 437 vi_add_at_eol(EditLine *el, int c __attribute__((__unused__))) 438 { 439 440 el->el_map.current = el->el_map.key; 441 el->el_line.cursor = el->el_line.lastchar; 442 cv_undo(el); 443 return (CC_CURSOR); 444 } 445 446 447 /* vi_delete_meta(): 448 * Vi delete prefix command 449 * [d] 450 */ 451 protected el_action_t 452 /*ARGSUSED*/ 453 vi_delete_meta(EditLine *el, int c __attribute__((__unused__))) 454 { 455 456 return (cv_action(el, DELETE)); 457 } 458 459 460 /* vi_end_big_word(): 461 * Vi move to the end of the current space delimited word 462 * [E] 463 */ 464 protected el_action_t 465 /*ARGSUSED*/ 466 vi_end_big_word(EditLine *el, int c) 467 { 468 469 if (el->el_line.cursor == el->el_line.lastchar) 470 return (CC_ERROR); 471 472 el->el_line.cursor = cv__endword(el->el_line.cursor, 473 el->el_line.lastchar, el->el_state.argument, cv__isWord); 474 475 if (el->el_chared.c_vcmd.action != NOP) { 476 el->el_line.cursor++; 477 cv_delfini(el); 478 return (CC_REFRESH); 479 } 480 return (CC_CURSOR); 481 } 482 483 484 /* vi_end_word(): 485 * Vi move to the end of the current word 486 * [e] 487 */ 488 protected el_action_t 489 /*ARGSUSED*/ 490 vi_end_word(EditLine *el, int c __attribute__((__unused__))) 491 { 492 493 if (el->el_line.cursor == el->el_line.lastchar) 494 return (CC_ERROR); 495 496 el->el_line.cursor = cv__endword(el->el_line.cursor, 497 el->el_line.lastchar, el->el_state.argument, cv__isword); 498 499 if (el->el_chared.c_vcmd.action != NOP) { 500 el->el_line.cursor++; 501 cv_delfini(el); 502 return (CC_REFRESH); 503 } 504 return (CC_CURSOR); 505 } 506 507 508 /* vi_undo(): 509 * Vi undo last change 510 * [u] 511 */ 512 protected el_action_t 513 /*ARGSUSED*/ 514 vi_undo(EditLine *el, int c __attribute__((__unused__))) 515 { 516 c_undo_t un = el->el_chared.c_undo; 517 518 if (un.len == -1) 519 return CC_ERROR; 520 521 /* switch line buffer and undo buffer */ 522 el->el_chared.c_undo.buf = el->el_line.buffer; 523 el->el_chared.c_undo.len = el->el_line.lastchar - el->el_line.buffer; 524 el->el_chared.c_undo.cursor = el->el_line.cursor - el->el_line.buffer; 525 el->el_line.limit = un.buf + (el->el_line.limit - el->el_line.buffer); 526 el->el_line.buffer = un.buf; 527 el->el_line.cursor = un.buf + un.cursor; 528 el->el_line.lastchar = un.buf + un.len; 529 530 return (CC_REFRESH); 531 } 532 533 534 /* vi_command_mode(): 535 * Vi enter command mode (use alternative key bindings) 536 * [<ESC>] 537 */ 538 protected el_action_t 539 /*ARGSUSED*/ 540 vi_command_mode(EditLine *el, int c __attribute__((__unused__))) 541 { 542 543 /* [Esc] cancels pending action */ 544 el->el_chared.c_vcmd.action = NOP; 545 el->el_chared.c_vcmd.pos = 0; 546 547 el->el_state.doingarg = 0; 548 549 el->el_state.inputmode = MODE_INSERT; 550 el->el_map.current = el->el_map.alt; 551 #ifdef VI_MOVE 552 if (el->el_line.cursor > el->el_line.buffer) 553 el->el_line.cursor--; 554 #endif 555 return (CC_CURSOR); 556 } 557 558 559 /* vi_zero(): 560 * Vi move to the beginning of line 561 * [0] 562 */ 563 protected el_action_t 564 vi_zero(EditLine *el, int c) 565 { 566 567 if (el->el_state.doingarg) 568 return ed_argument_digit(el, c); 569 570 el->el_line.cursor = el->el_line.buffer; 571 if (el->el_chared.c_vcmd.action != NOP) { 572 cv_delfini(el); 573 return (CC_REFRESH); 574 } 575 return (CC_CURSOR); 576 } 577 578 579 /* vi_delete_prev_char(): 580 * Vi move to previous character (backspace) 581 * [^H] in insert mode only 582 */ 583 protected el_action_t 584 /*ARGSUSED*/ 585 vi_delete_prev_char(EditLine *el, int c __attribute__((__unused__))) 586 { 587 588 if (el->el_line.cursor <= el->el_line.buffer) 589 return (CC_ERROR); 590 591 c_delbefore1(el); 592 el->el_line.cursor--; 593 return (CC_REFRESH); 594 } 595 596 597 /* vi_list_or_eof(): 598 * Vi list choices for completion or indicate end of file if empty line 599 * [^D] 600 */ 601 protected el_action_t 602 /*ARGSUSED*/ 603 vi_list_or_eof(EditLine *el, int c) 604 { 605 606 if (el->el_line.cursor == el->el_line.lastchar) { 607 if (el->el_line.cursor == el->el_line.buffer) { 608 term_writec(el, c); /* then do a EOF */ 609 return (CC_EOF); 610 } else { 611 /* 612 * Here we could list completions, but it is an 613 * error right now 614 */ 615 term_beep(el); 616 return (CC_ERROR); 617 } 618 } else { 619 #ifdef notyet 620 re_goto_bottom(el); 621 *el->el_line.lastchar = '\0'; /* just in case */ 622 return (CC_LIST_CHOICES); 623 #else 624 /* 625 * Just complain for now. 626 */ 627 term_beep(el); 628 return (CC_ERROR); 629 #endif 630 } 631 } 632 633 634 /* vi_kill_line_prev(): 635 * Vi cut from beginning of line to cursor 636 * [^U] 637 */ 638 protected el_action_t 639 /*ARGSUSED*/ 640 vi_kill_line_prev(EditLine *el, int c __attribute__((__unused__))) 641 { 642 char *kp, *cp; 643 644 cp = el->el_line.buffer; 645 kp = el->el_chared.c_kill.buf; 646 while (cp < el->el_line.cursor) 647 *kp++ = *cp++; /* copy it */ 648 el->el_chared.c_kill.last = kp; 649 c_delbefore(el, el->el_line.cursor - el->el_line.buffer); 650 el->el_line.cursor = el->el_line.buffer; /* zap! */ 651 return (CC_REFRESH); 652 } 653 654 655 /* vi_search_prev(): 656 * Vi search history previous 657 * [?] 658 */ 659 protected el_action_t 660 /*ARGSUSED*/ 661 vi_search_prev(EditLine *el, int c __attribute__((__unused__))) 662 { 663 664 return (cv_search(el, ED_SEARCH_PREV_HISTORY)); 665 } 666 667 668 /* vi_search_next(): 669 * Vi search history next 670 * [/] 671 */ 672 protected el_action_t 673 /*ARGSUSED*/ 674 vi_search_next(EditLine *el, int c __attribute__((__unused__))) 675 { 676 677 return (cv_search(el, ED_SEARCH_NEXT_HISTORY)); 678 } 679 680 681 /* vi_repeat_search_next(): 682 * Vi repeat current search in the same search direction 683 * [n] 684 */ 685 protected el_action_t 686 /*ARGSUSED*/ 687 vi_repeat_search_next(EditLine *el, int c __attribute__((__unused__))) 688 { 689 690 if (el->el_search.patlen == 0) 691 return (CC_ERROR); 692 else 693 return (cv_repeat_srch(el, el->el_search.patdir)); 694 } 695 696 697 /* vi_repeat_search_prev(): 698 * Vi repeat current search in the opposite search direction 699 * [N] 700 */ 701 /*ARGSUSED*/ 702 protected el_action_t 703 vi_repeat_search_prev(EditLine *el, int c __attribute__((__unused__))) 704 { 705 706 if (el->el_search.patlen == 0) 707 return (CC_ERROR); 708 else 709 return (cv_repeat_srch(el, 710 el->el_search.patdir == ED_SEARCH_PREV_HISTORY ? 711 ED_SEARCH_NEXT_HISTORY : ED_SEARCH_PREV_HISTORY)); 712 } 713 714 715 /* vi_next_char(): 716 * Vi move to the character specified next 717 * [f] 718 */ 719 protected el_action_t 720 /*ARGSUSED*/ 721 vi_next_char(EditLine *el, int c __attribute__((__unused__))) 722 { 723 return cv_csearch(el, CHAR_FWD, -1, el->el_state.argument, 0); 724 } 725 726 727 /* vi_prev_char(): 728 * Vi move to the character specified previous 729 * [F] 730 */ 731 protected el_action_t 732 /*ARGSUSED*/ 733 vi_prev_char(EditLine *el, int c __attribute__((__unused__))) 734 { 735 return cv_csearch(el, CHAR_BACK, -1, el->el_state.argument, 0); 736 } 737 738 739 /* vi_to_next_char(): 740 * Vi move up to the character specified next 741 * [t] 742 */ 743 protected el_action_t 744 /*ARGSUSED*/ 745 vi_to_next_char(EditLine *el, int c __attribute__((__unused__))) 746 { 747 return cv_csearch(el, CHAR_FWD, -1, el->el_state.argument, 1); 748 } 749 750 751 /* vi_to_prev_char(): 752 * Vi move up to the character specified previous 753 * [T] 754 */ 755 protected el_action_t 756 /*ARGSUSED*/ 757 vi_to_prev_char(EditLine *el, int c __attribute__((__unused__))) 758 { 759 return cv_csearch(el, CHAR_BACK, -1, el->el_state.argument, 1); 760 } 761 762 763 /* vi_repeat_next_char(): 764 * Vi repeat current character search in the same search direction 765 * [;] 766 */ 767 protected el_action_t 768 /*ARGSUSED*/ 769 vi_repeat_next_char(EditLine *el, int c __attribute__((__unused__))) 770 { 771 772 return cv_csearch(el, el->el_search.chadir, el->el_search.chacha, 773 el->el_state.argument, el->el_search.chatflg); 774 } 775 776 777 /* vi_repeat_prev_char(): 778 * Vi repeat current character search in the opposite search direction 779 * [,] 780 */ 781 protected el_action_t 782 /*ARGSUSED*/ 783 vi_repeat_prev_char(EditLine *el, int c __attribute__((__unused__))) 784 { 785 el_action_t r; 786 int dir = el->el_search.chadir; 787 788 r = cv_csearch(el, -dir, el->el_search.chacha, 789 el->el_state.argument, el->el_search.chatflg); 790 el->el_search.chadir = dir; 791 return r; 792 } 793 794 795 /* vi_match(): 796 * Vi go to matching () {} or [] 797 * [%] 798 */ 799 protected el_action_t 800 /*ARGSUSED*/ 801 vi_match(EditLine *el, int c) 802 { 803 const char match_chars[] = "()[]{}"; 804 char *cp; 805 int delta, i, count; 806 char o_ch, c_ch; 807 808 *el->el_line.lastchar = '\0'; /* just in case */ 809 810 i = strcspn(el->el_line.cursor, match_chars); 811 o_ch = el->el_line.cursor[i]; 812 if (o_ch == 0) 813 return CC_ERROR; 814 delta = strchr(match_chars, o_ch) - match_chars; 815 c_ch = match_chars[delta ^ 1]; 816 count = 1; 817 delta = 1 - (delta & 1) * 2; 818 819 for (cp = &el->el_line.cursor[i]; count; ) { 820 cp += delta; 821 if (cp < el->el_line.buffer || cp >= el->el_line.lastchar) 822 return CC_ERROR; 823 if (*cp == o_ch) 824 count++; 825 else if (*cp == c_ch) 826 count--; 827 } 828 829 el->el_line.cursor = cp; 830 831 if (el->el_chared.c_vcmd.action != NOP) { 832 /* NB posix says char under cursor should NOT be deleted 833 for -ve delta - this is different to netbsd vi. */ 834 if (delta > 0) 835 el->el_line.cursor++; 836 cv_delfini(el); 837 return (CC_REFRESH); 838 } 839 return (CC_CURSOR); 840 } 841 842 /* vi_undo_line(): 843 * Vi undo all changes to line 844 * [U] 845 */ 846 protected el_action_t 847 /*ARGSUSED*/ 848 vi_undo_line(EditLine *el, int c) 849 { 850 851 cv_undo(el); 852 return hist_get(el); 853 } 854 855 /* vi_to_column(): 856 * Vi go to specified column 857 * [|] 858 * NB netbsd vi goes to screen column 'n', posix says nth character 859 */ 860 protected el_action_t 861 /*ARGSUSED*/ 862 vi_to_column(EditLine *el, int c) 863 { 864 865 el->el_line.cursor = el->el_line.buffer; 866 el->el_state.argument--; 867 return ed_next_char(el, 0); 868 } 869 870 /* vi_yank_end(): 871 * Vi yank to end of line 872 * [Y] 873 */ 874 protected el_action_t 875 /*ARGSUSED*/ 876 vi_yank_end(EditLine *el, int c) 877 { 878 879 cv_yank(el, el->el_line.cursor, 880 el->el_line.lastchar - el->el_line.cursor); 881 return CC_REFRESH; 882 } 883 884 /* vi_yank(): 885 * Vi yank 886 * [y] 887 */ 888 protected el_action_t 889 /*ARGSUSED*/ 890 vi_yank(EditLine *el, int c) 891 { 892 893 return cv_action(el, YANK); 894 } 895 896 /* vi_comment_out(): 897 * Vi comment out current command 898 * [#] 899 */ 900 protected el_action_t 901 /*ARGSUSED*/ 902 vi_comment_out(EditLine *el, int c) 903 { 904 905 el->el_line.cursor = el->el_line.buffer; 906 c_insert(el, 1); 907 *el->el_line.cursor = '#'; 908 re_refresh(el); 909 return ed_newline(el, 0); 910 } 911 912 /* vi_alias(): 913 * Vi include shell alias 914 * [@] 915 * NB: posix implies that we should enter insert mode, however 916 * this is against historical precedent... 917 */ 918 #ifdef __weak_reference 919 extern char *get_alias_text(const char *) __weak_reference(get_alias_text); 920 #endif 921 protected el_action_t 922 /*ARGSUSED*/ 923 vi_alias(EditLine *el, int c) 924 { 925 #ifdef __weak_reference 926 char alias_name[3]; 927 char *alias_text; 928 929 if (get_alias_text == 0) { 930 return CC_ERROR; 931 } 932 933 alias_name[0] = '_'; 934 alias_name[2] = 0; 935 if (el_getc(el, &alias_name[1]) != 1) 936 return CC_ERROR; 937 938 alias_text = get_alias_text(alias_name); 939 if (alias_text != NULL) 940 el_push(el, alias_text); 941 return CC_NORM; 942 #else 943 return CC_ERROR; 944 #endif 945 } 946 947 /* vi_to_history_line(): 948 * Vi go to specified history file line. 949 * [G] 950 */ 951 protected el_action_t 952 /*ARGSUSED*/ 953 vi_to_history_line(EditLine *el, int c) 954 { 955 int sv_event_no = el->el_history.eventno; 956 el_action_t rval; 957 958 959 if (el->el_history.eventno == 0) { 960 (void) strncpy(el->el_history.buf, el->el_line.buffer, 961 EL_BUFSIZ); 962 el->el_history.last = el->el_history.buf + 963 (el->el_line.lastchar - el->el_line.buffer); 964 } 965 966 /* Lack of a 'count' means oldest, not 1 */ 967 if (!el->el_state.doingarg) { 968 el->el_history.eventno = 0x7fffffff; 969 hist_get(el); 970 } else { 971 /* This is brain dead, all the rest of this code counts 972 * upwards going into the past. Here we need count in the 973 * other direction (to match the output of fc -l). 974 * I could change the world, but this seems to suffice. 975 */ 976 el->el_history.eventno = 1; 977 if (hist_get(el) == CC_ERROR) 978 return CC_ERROR; 979 el->el_history.eventno = 1 + el->el_history.ev.num 980 - el->el_state.argument; 981 if (el->el_history.eventno < 0) { 982 el->el_history.eventno = sv_event_no; 983 return CC_ERROR; 984 } 985 } 986 rval = hist_get(el); 987 if (rval == CC_ERROR) 988 el->el_history.eventno = sv_event_no; 989 return rval; 990 } 991 992 /* vi_histedit(): 993 * Vi edit history line with vi 994 * [v] 995 */ 996 protected el_action_t 997 /*ARGSUSED*/ 998 vi_histedit(EditLine *el, int c) 999 { 1000 int fd; 1001 pid_t pid; 1002 int st; 1003 char tempfile[] = "/tmp/histedit.XXXXXXXXXX"; 1004 char *cp; 1005 1006 if (el->el_state.doingarg) { 1007 if (vi_to_history_line(el, 0) == CC_ERROR) 1008 return CC_ERROR; 1009 } 1010 1011 fd = mkstemp(tempfile); 1012 if (fd < 0) 1013 return CC_ERROR; 1014 cp = el->el_line.buffer; 1015 write(fd, cp, el->el_line.lastchar - cp +0u); 1016 write(fd, "\n", 1); 1017 pid = fork(); 1018 switch (pid) { 1019 case -1: 1020 close(fd); 1021 unlink(tempfile); 1022 return CC_ERROR; 1023 case 0: 1024 close(fd); 1025 execlp("vi", "vi", tempfile, NULL); 1026 exit(0); 1027 /*NOTREACHED*/ 1028 default: 1029 while (waitpid(pid, &st, 0) != pid) 1030 continue; 1031 lseek(fd, 0ll, SEEK_SET); 1032 st = read(fd, cp, el->el_line.limit - cp +0u); 1033 if (st > 0 && cp[st - 1] == '\n') 1034 st--; 1035 el->el_line.cursor = cp; 1036 el->el_line.lastchar = cp + st; 1037 break; 1038 } 1039 1040 close(fd); 1041 unlink(tempfile); 1042 /* return CC_REFRESH; */ 1043 return ed_newline(el, 0); 1044 } 1045 1046 /* vi_history_word(): 1047 * Vi append word from previous input line 1048 * [_] 1049 * Who knows where this one came from! 1050 * '_' in vi means 'entire current line', so 'cc' is a synonym for 'c_' 1051 */ 1052 protected el_action_t 1053 /*ARGSUSED*/ 1054 vi_history_word(EditLine *el, int c) 1055 { 1056 const char *wp = HIST_FIRST(el); 1057 const char *wep, *wsp; 1058 int len; 1059 char *cp; 1060 const char *lim; 1061 1062 if (wp == NULL) 1063 return CC_ERROR; 1064 1065 wep = wsp = 0; 1066 do { 1067 while (isspace((unsigned char)*wp)) 1068 wp++; 1069 if (*wp == 0) 1070 break; 1071 wsp = wp; 1072 while (*wp && !isspace((unsigned char)*wp)) 1073 wp++; 1074 wep = wp; 1075 } while ((!el->el_state.doingarg || --el->el_state.argument > 0) && *wp != 0); 1076 1077 if (wsp == 0 || (el->el_state.doingarg && el->el_state.argument != 0)) 1078 return CC_ERROR; 1079 1080 cv_undo(el); 1081 len = wep - wsp; 1082 if (el->el_line.cursor < el->el_line.lastchar) 1083 el->el_line.cursor++; 1084 c_insert(el, len + 1); 1085 cp = el->el_line.cursor; 1086 lim = el->el_line.limit; 1087 if (cp < lim) 1088 *cp++ = ' '; 1089 while (wsp < wep && cp < lim) 1090 *cp++ = *wsp++; 1091 el->el_line.cursor = cp; 1092 1093 el->el_map.current = el->el_map.key; 1094 return CC_REFRESH; 1095 } 1096 1097 /* vi_redo(): 1098 * Vi redo last non-motion command 1099 * [.] 1100 */ 1101 protected el_action_t 1102 /*ARGSUSED*/ 1103 vi_redo(EditLine *el, int c) 1104 { 1105 c_redo_t *r = &el->el_chared.c_redo; 1106 1107 if (!el->el_state.doingarg && r->count) { 1108 el->el_state.doingarg = 1; 1109 el->el_state.argument = r->count; 1110 } 1111 1112 el->el_chared.c_vcmd.pos = el->el_line.cursor; 1113 el->el_chared.c_vcmd.action = r->action; 1114 if (r->pos != r->buf) { 1115 if (r->pos + 1 > r->lim) 1116 /* sanity */ 1117 r->pos = r->lim - 1; 1118 r->pos[0] = 0; 1119 el_push(el, r->buf); 1120 } 1121 1122 el->el_state.thiscmd = r->cmd; 1123 el->el_state.thisch = r->ch; 1124 return (*el->el_map.func[r->cmd])(el, r->ch); 1125 } 1126
Indexes created Thu Oct 02 01:09:59 GMT 2025