vi.c revision 1.21
1 /* $NetBSD: vi.c,v 1.21 2005/04/25 01:06:03 matt 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 1.21 2005/04/25 01:06:03 matt 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 el->el_line.lastchar = el->el_line.buffer; 75 el->el_line.cursor = el->el_line.buffer; 76 if (c & INSERT) 77 el->el_map.current = el->el_map.key; 78 79 return (CC_REFRESH); 80 } 81 el->el_chared.c_vcmd.pos = el->el_line.cursor; 82 el->el_chared.c_vcmd.action = c; 83 return (CC_ARGHACK); 84 } 85 86 /* cv_paste(): 87 * Paste previous deletion before or after the cursor 88 */ 89 private el_action_t 90 cv_paste(EditLine *el, int c) 91 { 92 char *ptr; 93 c_kill_t *k = &el->el_chared.c_kill; 94 int len = k->last - k->buf; 95 96 if (k->buf == NULL || len == 0) 97 return (CC_ERROR); 98 #ifdef DEBUG_PASTE 99 (void) fprintf(el->el_errfile, "Paste: \"%.*s\"\n", len, k->buf); 100 #endif 101 102 cv_undo(el); 103 104 if (!c && el->el_line.cursor < el->el_line.lastchar) 105 el->el_line.cursor++; 106 ptr = 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(ptr, k->buf, len +0u); 112 return (CC_REFRESH); 113 } 114 115 116 /* vi_paste_next(): 117 * Vi paste previous deletion to the right of the cursor 118 * [p] 119 */ 120 protected el_action_t 121 /*ARGSUSED*/ 122 vi_paste_next(EditLine *el, int c __attribute__((__unused__))) 123 { 124 125 return (cv_paste(el, 0)); 126 } 127 128 129 /* vi_paste_prev(): 130 * Vi paste previous deletion to the left of the cursor 131 * [P] 132 */ 133 protected el_action_t 134 /*ARGSUSED*/ 135 vi_paste_prev(EditLine *el, int c __attribute__((__unused__))) 136 { 137 138 return (cv_paste(el, 1)); 139 } 140 141 142 /* vi_prev_big_word(): 143 * Vi move to the previous space delimited word 144 * [B] 145 */ 146 protected el_action_t 147 /*ARGSUSED*/ 148 vi_prev_big_word(EditLine *el, int c) 149 { 150 151 if (el->el_line.cursor == el->el_line.buffer) 152 return (CC_ERROR); 153 154 el->el_line.cursor = cv_prev_word(el->el_line.cursor, 155 el->el_line.buffer, 156 el->el_state.argument, 157 cv__isWord); 158 159 if (el->el_chared.c_vcmd.action != NOP) { 160 cv_delfini(el); 161 return (CC_REFRESH); 162 } 163 return (CC_CURSOR); 164 } 165 166 167 /* vi_prev_word(): 168 * Vi move to the previous word 169 * [b] 170 */ 171 protected el_action_t 172 /*ARGSUSED*/ 173 vi_prev_word(EditLine *el, int c __attribute__((__unused__))) 174 { 175 176 if (el->el_line.cursor == el->el_line.buffer) 177 return (CC_ERROR); 178 179 el->el_line.cursor = cv_prev_word(el->el_line.cursor, 180 el->el_line.buffer, 181 el->el_state.argument, 182 cv__isword); 183 184 if (el->el_chared.c_vcmd.action != NOP) { 185 cv_delfini(el); 186 return (CC_REFRESH); 187 } 188 return (CC_CURSOR); 189 } 190 191 192 /* vi_next_big_word(): 193 * Vi move to the next space delimited word 194 * [W] 195 */ 196 protected el_action_t 197 /*ARGSUSED*/ 198 vi_next_big_word(EditLine *el, int c) 199 { 200 201 if (el->el_line.cursor >= el->el_line.lastchar - 1) 202 return (CC_ERROR); 203 204 el->el_line.cursor = cv_next_word(el, el->el_line.cursor, 205 el->el_line.lastchar, el->el_state.argument, cv__isWord); 206 207 if (el->el_map.type == MAP_VI) 208 if (el->el_chared.c_vcmd.action != NOP) { 209 cv_delfini(el); 210 return (CC_REFRESH); 211 } 212 return (CC_CURSOR); 213 } 214 215 216 /* vi_next_word(): 217 * Vi move to the next word 218 * [w] 219 */ 220 protected el_action_t 221 /*ARGSUSED*/ 222 vi_next_word(EditLine *el, int c __attribute__((__unused__))) 223 { 224 225 if (el->el_line.cursor >= el->el_line.lastchar - 1) 226 return (CC_ERROR); 227 228 el->el_line.cursor = cv_next_word(el, el->el_line.cursor, 229 el->el_line.lastchar, el->el_state.argument, cv__isword); 230 231 if (el->el_map.type == MAP_VI) 232 if (el->el_chared.c_vcmd.action != NOP) { 233 cv_delfini(el); 234 return (CC_REFRESH); 235 } 236 return (CC_CURSOR); 237 } 238 239 240 /* vi_change_case(): 241 * Vi change case of character under the cursor and advance one character 242 * [~] 243 */ 244 protected el_action_t 245 vi_change_case(EditLine *el, int c) 246 { 247 int i; 248 249 if (el->el_line.cursor >= el->el_line.lastchar) 250 return (CC_ERROR); 251 cv_undo(el); 252 for (i = 0; i < el->el_state.argument; i++) { 253 254 c = *(unsigned char *)el->el_line.cursor; 255 if (isupper(c)) 256 *el->el_line.cursor = tolower(c); 257 else if (islower(c)) 258 *el->el_line.cursor = toupper(c); 259 260 if (++el->el_line.cursor >= el->el_line.lastchar) { 261 el->el_line.cursor--; 262 re_fastaddc(el); 263 break; 264 } 265 re_fastaddc(el); 266 } 267 return CC_NORM; 268 } 269 270 271 /* vi_change_meta(): 272 * Vi change prefix command 273 * [c] 274 */ 275 protected el_action_t 276 /*ARGSUSED*/ 277 vi_change_meta(EditLine *el, int c __attribute__((__unused__))) 278 { 279 280 /* 281 * Delete with insert == change: first we delete and then we leave in 282 * insert mode. 283 */ 284 return (cv_action(el, DELETE | INSERT)); 285 } 286 287 288 /* vi_insert_at_bol(): 289 * Vi enter insert mode at the beginning of line 290 * [I] 291 */ 292 protected el_action_t 293 /*ARGSUSED*/ 294 vi_insert_at_bol(EditLine *el, int c __attribute__((__unused__))) 295 { 296 297 el->el_line.cursor = el->el_line.buffer; 298 cv_undo(el); 299 el->el_map.current = el->el_map.key; 300 return (CC_CURSOR); 301 } 302 303 304 /* vi_replace_char(): 305 * Vi replace character under the cursor with the next character typed 306 * [r] 307 */ 308 protected el_action_t 309 /*ARGSUSED*/ 310 vi_replace_char(EditLine *el, int c __attribute__((__unused__))) 311 { 312 313 if (el->el_line.cursor >= el->el_line.lastchar) 314 return CC_ERROR; 315 316 el->el_map.current = el->el_map.key; 317 el->el_state.inputmode = MODE_REPLACE_1; 318 cv_undo(el); 319 return (CC_ARGHACK); 320 } 321 322 323 /* vi_replace_mode(): 324 * Vi enter replace mode 325 * [R] 326 */ 327 protected el_action_t 328 /*ARGSUSED*/ 329 vi_replace_mode(EditLine *el, int c __attribute__((__unused__))) 330 { 331 332 el->el_map.current = el->el_map.key; 333 el->el_state.inputmode = MODE_REPLACE; 334 cv_undo(el); 335 return (CC_NORM); 336 } 337 338 339 /* vi_substitute_char(): 340 * Vi replace character under the cursor and enter insert mode 341 * [s] 342 */ 343 protected el_action_t 344 /*ARGSUSED*/ 345 vi_substitute_char(EditLine *el, int c __attribute__((__unused__))) 346 { 347 348 c_delafter(el, el->el_state.argument); 349 el->el_map.current = el->el_map.key; 350 return (CC_REFRESH); 351 } 352 353 354 /* vi_substitute_line(): 355 * Vi substitute entire line 356 * [S] 357 */ 358 protected el_action_t 359 /*ARGSUSED*/ 360 vi_substitute_line(EditLine *el, int c __attribute__((__unused__))) 361 { 362 363 cv_undo(el); 364 cv_yank(el, el->el_line.buffer, 365 el->el_line.lastchar - el->el_line.buffer); 366 (void) em_kill_line(el, 0); 367 el->el_map.current = el->el_map.key; 368 return (CC_REFRESH); 369 } 370 371 372 /* vi_change_to_eol(): 373 * Vi change to end of line 374 * [C] 375 */ 376 protected el_action_t 377 /*ARGSUSED*/ 378 vi_change_to_eol(EditLine *el, int c __attribute__((__unused__))) 379 { 380 381 cv_undo(el); 382 cv_yank(el, el->el_line.cursor, 383 el->el_line.lastchar - el->el_line.cursor); 384 (void) ed_kill_line(el, 0); 385 el->el_map.current = el->el_map.key; 386 return (CC_REFRESH); 387 } 388 389 390 /* vi_insert(): 391 * Vi enter insert mode 392 * [i] 393 */ 394 protected el_action_t 395 /*ARGSUSED*/ 396 vi_insert(EditLine *el, int c __attribute__((__unused__))) 397 { 398 399 el->el_map.current = el->el_map.key; 400 cv_undo(el); 401 return (CC_NORM); 402 } 403 404 405 /* vi_add(): 406 * Vi enter insert mode after the cursor 407 * [a] 408 */ 409 protected el_action_t 410 /*ARGSUSED*/ 411 vi_add(EditLine *el, int c __attribute__((__unused__))) 412 { 413 int ret; 414 415 el->el_map.current = el->el_map.key; 416 if (el->el_line.cursor < el->el_line.lastchar) { 417 el->el_line.cursor++; 418 if (el->el_line.cursor > el->el_line.lastchar) 419 el->el_line.cursor = el->el_line.lastchar; 420 ret = CC_CURSOR; 421 } else 422 ret = CC_NORM; 423 424 cv_undo(el); 425 426 return (ret); 427 } 428 429 430 /* vi_add_at_eol(): 431 * Vi enter insert mode at end of line 432 * [A] 433 */ 434 protected el_action_t 435 /*ARGSUSED*/ 436 vi_add_at_eol(EditLine *el, int c __attribute__((__unused__))) 437 { 438 439 el->el_map.current = el->el_map.key; 440 el->el_line.cursor = el->el_line.lastchar; 441 cv_undo(el); 442 return (CC_CURSOR); 443 } 444 445 446 /* vi_delete_meta(): 447 * Vi delete prefix command 448 * [d] 449 */ 450 protected el_action_t 451 /*ARGSUSED*/ 452 vi_delete_meta(EditLine *el, int c __attribute__((__unused__))) 453 { 454 455 return (cv_action(el, DELETE)); 456 } 457 458 459 /* vi_end_big_word(): 460 * Vi move to the end of the current space delimited word 461 * [E] 462 */ 463 protected el_action_t 464 /*ARGSUSED*/ 465 vi_end_big_word(EditLine *el, int c) 466 { 467 468 if (el->el_line.cursor == el->el_line.lastchar) 469 return (CC_ERROR); 470 471 el->el_line.cursor = cv__endword(el->el_line.cursor, 472 el->el_line.lastchar, el->el_state.argument, cv__isWord); 473 474 if (el->el_chared.c_vcmd.action != NOP) { 475 el->el_line.cursor++; 476 cv_delfini(el); 477 return (CC_REFRESH); 478 } 479 return (CC_CURSOR); 480 } 481 482 483 /* vi_end_word(): 484 * Vi move to the end of the current word 485 * [e] 486 */ 487 protected el_action_t 488 /*ARGSUSED*/ 489 vi_end_word(EditLine *el, int c __attribute__((__unused__))) 490 { 491 492 if (el->el_line.cursor == el->el_line.lastchar) 493 return (CC_ERROR); 494 495 el->el_line.cursor = cv__endword(el->el_line.cursor, 496 el->el_line.lastchar, el->el_state.argument, cv__isword); 497 498 if (el->el_chared.c_vcmd.action != NOP) { 499 el->el_line.cursor++; 500 cv_delfini(el); 501 return (CC_REFRESH); 502 } 503 return (CC_CURSOR); 504 } 505 506 507 /* vi_undo(): 508 * Vi undo last change 509 * [u] 510 */ 511 protected el_action_t 512 /*ARGSUSED*/ 513 vi_undo(EditLine *el, int c __attribute__((__unused__))) 514 { 515 c_undo_t un = el->el_chared.c_undo; 516 517 if (un.len == -1) 518 return CC_ERROR; 519 520 /* switch line buffer and undo buffer */ 521 el->el_chared.c_undo.buf = el->el_line.buffer; 522 el->el_chared.c_undo.len = el->el_line.lastchar - el->el_line.buffer; 523 el->el_chared.c_undo.cursor = el->el_line.cursor - el->el_line.buffer; 524 el->el_line.limit = un.buf + (el->el_line.limit - el->el_line.buffer); 525 el->el_line.buffer = un.buf; 526 el->el_line.cursor = un.buf + un.cursor; 527 el->el_line.lastchar = un.buf + un.len; 528 529 return (CC_REFRESH); 530 } 531 532 533 /* vi_command_mode(): 534 * Vi enter command mode (use alternative key bindings) 535 * [<ESC>] 536 */ 537 protected el_action_t 538 /*ARGSUSED*/ 539 vi_command_mode(EditLine *el, int c __attribute__((__unused__))) 540 { 541 542 /* [Esc] cancels pending action */ 543 el->el_chared.c_vcmd.action = NOP; 544 el->el_chared.c_vcmd.pos = 0; 545 546 el->el_state.doingarg = 0; 547 548 el->el_state.inputmode = MODE_INSERT; 549 el->el_map.current = el->el_map.alt; 550 #ifdef VI_MOVE 551 if (el->el_line.cursor > el->el_line.buffer) 552 el->el_line.cursor--; 553 #endif 554 return (CC_CURSOR); 555 } 556 557 558 /* vi_zero(): 559 * Vi move to the beginning of line 560 * [0] 561 */ 562 protected el_action_t 563 vi_zero(EditLine *el, int c) 564 { 565 566 if (el->el_state.doingarg) 567 return ed_argument_digit(el, c); 568 569 el->el_line.cursor = el->el_line.buffer; 570 if (el->el_chared.c_vcmd.action != NOP) { 571 cv_delfini(el); 572 return (CC_REFRESH); 573 } 574 return (CC_CURSOR); 575 } 576 577 578 /* vi_delete_prev_char(): 579 * Vi move to previous character (backspace) 580 * [^H] in insert mode only 581 */ 582 protected el_action_t 583 /*ARGSUSED*/ 584 vi_delete_prev_char(EditLine *el, int c __attribute__((__unused__))) 585 { 586 587 if (el->el_line.cursor <= el->el_line.buffer) 588 return (CC_ERROR); 589 590 c_delbefore1(el); 591 el->el_line.cursor--; 592 return (CC_REFRESH); 593 } 594 595 596 /* vi_list_or_eof(): 597 * Vi list choices for completion or indicate end of file if empty line 598 * [^D] 599 */ 600 protected el_action_t 601 /*ARGSUSED*/ 602 vi_list_or_eof(EditLine *el, int c __attribute__((__unused__))) 603 { 604 605 if (el->el_line.cursor == el->el_line.lastchar) { 606 if (el->el_line.cursor == el->el_line.buffer) { 607 term_overwrite(el, STReof, 4); /* then do a EOF */ 608 term__flush(); 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 * [c] 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 impiles that we should enter insert mode, however 916 * this is against historical precedent... 917 */ 918 protected el_action_t 919 /*ARGSUSED*/ 920 vi_alias(EditLine *el, int c) 921 { 922 #ifdef __weak_extern 923 char alias_name[3]; 924 char *alias_text; 925 extern char *get_alias_text(const char *); 926 __weak_extern(get_alias_text); 927 928 if (get_alias_text == 0) { 929 return CC_ERROR; 930 } 931 932 alias_name[0] = '_'; 933 alias_name[2] = 0; 934 if (el_getc(el, &alias_name[1]) != 1) 935 return CC_ERROR; 936 937 alias_text = get_alias_text(alias_name); 938 if (alias_text != NULL) 939 el_push(el, alias_text); 940 return CC_NORM; 941 #else 942 return CC_ERROR; 943 #endif 944 } 945 946 /* vi_to_history_line(): 947 * Vi go to specified history file line. 948 * [G] 949 */ 950 protected el_action_t 951 /*ARGSUSED*/ 952 vi_to_history_line(EditLine *el, int c) 953 { 954 int sv_event_no = el->el_history.eventno; 955 el_action_t rval; 956 957 958 if (el->el_history.eventno == 0) { 959 (void) strncpy(el->el_history.buf, el->el_line.buffer, 960 EL_BUFSIZ); 961 el->el_history.last = el->el_history.buf + 962 (el->el_line.lastchar - el->el_line.buffer); 963 } 964 965 /* Lack of a 'count' means oldest, not 1 */ 966 if (!el->el_state.doingarg) { 967 el->el_history.eventno = 0x7fffffff; 968 hist_get(el); 969 } else { 970 /* This is brain dead, all the rest of this code counts 971 * upwards going into the past. Here we need count in the 972 * other direction (to match the output of fc -l). 973 * I could change the world, but this seems to suffice. 974 */ 975 el->el_history.eventno = 1; 976 if (hist_get(el) == CC_ERROR) 977 return CC_ERROR; 978 el->el_history.eventno = 1 + el->el_history.ev.num 979 - el->el_state.argument; 980 if (el->el_history.eventno < 0) { 981 el->el_history.eventno = sv_event_no; 982 return CC_ERROR; 983 } 984 } 985 rval = hist_get(el); 986 if (rval == CC_ERROR) 987 el->el_history.eventno = sv_event_no; 988 return rval; 989 } 990 991 /* vi_histedit(): 992 * Vi edit history line with vi 993 * [v] 994 */ 995 protected el_action_t 996 /*ARGSUSED*/ 997 vi_histedit(EditLine *el, int c) 998 { 999 int fd; 1000 pid_t pid; 1001 int st; 1002 char tempfile[] = "/tmp/histedit.XXXXXXXXXX"; 1003 char *cp; 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 cp = el->el_line.buffer; 1014 write(fd, cp, el->el_line.lastchar - cp +0u); 1015 write(fd, "\n", 1); 1016 pid = fork(); 1017 switch (pid) { 1018 case -1: 1019 close(fd); 1020 unlink(tempfile); 1021 return CC_ERROR; 1022 case 0: 1023 close(fd); 1024 execlp("vi", "vi", tempfile, NULL); 1025 exit(0); 1026 /*NOTREACHED*/ 1027 default: 1028 while (waitpid(pid, &st, 0) != pid) 1029 continue; 1030 lseek(fd, 0ll, SEEK_SET); 1031 st = read(fd, cp, el->el_line.limit - cp +0u); 1032 if (st > 0 && cp[st - 1] == '\n') 1033 st--; 1034 el->el_line.cursor = cp; 1035 el->el_line.lastchar = cp + st; 1036 break; 1037 } 1038 1039 close(fd); 1040 unlink(tempfile); 1041 /* return CC_REFRESH; */ 1042 return ed_newline(el, 0); 1043 } 1044 1045 /* vi_history_word(): 1046 * Vi append word from previous input line 1047 * [_] 1048 * Who knows where this one came from! 1049 * '_' in vi means 'entire current line', so 'cc' is a synonym for 'c_' 1050 */ 1051 protected el_action_t 1052 /*ARGSUSED*/ 1053 vi_history_word(EditLine *el, int c) 1054 { 1055 const char *wp = HIST_FIRST(el); 1056 const char *wep, *wsp; 1057 int len; 1058 char *cp; 1059 const char *lim; 1060 1061 if (wp == NULL) 1062 return CC_ERROR; 1063 1064 wep = wsp = 0; 1065 do { 1066 while (isspace((unsigned char)*wp)) 1067 wp++; 1068 if (*wp == 0) 1069 break; 1070 wsp = wp; 1071 while (*wp && !isspace((unsigned char)*wp)) 1072 wp++; 1073 wep = wp; 1074 } while ((!el->el_state.doingarg || --el->el_state.argument > 0) && *wp != 0); 1075 1076 if (wsp == 0 || (el->el_state.doingarg && el->el_state.argument != 0)) 1077 return CC_ERROR; 1078 1079 cv_undo(el); 1080 len = wep - wsp; 1081 if (el->el_line.cursor < el->el_line.lastchar) 1082 el->el_line.cursor++; 1083 c_insert(el, len + 1); 1084 cp = el->el_line.cursor; 1085 lim = el->el_line.limit; 1086 if (cp < lim) 1087 *cp++ = ' '; 1088 while (wsp < wep && cp < lim) 1089 *cp++ = *wsp++; 1090 el->el_line.cursor = cp; 1091 1092 el->el_map.current = el->el_map.key; 1093 return CC_REFRESH; 1094 } 1095 1096 /* vi_redo(): 1097 * Vi redo last non-motion command 1098 * [.] 1099 */ 1100 protected el_action_t 1101 /*ARGSUSED*/ 1102 vi_redo(EditLine *el, int c) 1103 { 1104 c_redo_t *r = &el->el_chared.c_redo; 1105 1106 if (!el->el_state.doingarg && r->count) { 1107 el->el_state.doingarg = 1; 1108 el->el_state.argument = r->count; 1109 } 1110 1111 el->el_chared.c_vcmd.pos = el->el_line.cursor; 1112 el->el_chared.c_vcmd.action = r->action; 1113 if (r->pos != r->buf) { 1114 if (r->pos + 1 > r->lim) 1115 /* sanity */ 1116 r->pos = r->lim - 1; 1117 r->pos[0] = 0; 1118 el_push(el, r->buf); 1119 } 1120 1121 el->el_state.thiscmd = r->cmd; 1122 el->el_state.thisch = r->ch; 1123 return (*el->el_map.func[r->cmd])(el, r->ch); 1124 } 1125
Indexes created Thu Oct 02 01:09:59 GMT 2025