common.c revision 1.14
1/* $OpenBSD: common.c,v 1.14 2016/03/20 23:48:27 schwarze Exp $ */ 2/* $NetBSD: common.c,v 1.24 2009/12/30 22:37:40 christos Exp $ */ 3 4/*- 5 * Copyright (c) 1992, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * This code is derived from software contributed to Berkeley by 9 * Christos Zoulas of Cornell University. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36#include "config.h" 37 38/* 39 * common.c: Common Editor functions 40 */ 41#include <ctype.h> 42#include <string.h> 43 44#include "el.h" 45#include "common.h" 46#include "parse.h" 47#include "vi.h" 48 49/* ed_end_of_file(): 50 * Indicate end of file 51 * [^D] 52 */ 53protected el_action_t 54/*ARGSUSED*/ 55ed_end_of_file(EditLine *el, wint_t c __attribute__((__unused__))) 56{ 57 58 re_goto_bottom(el); 59 *el->el_line.lastchar = '\0'; 60 return CC_EOF; 61} 62 63 64/* ed_insert(): 65 * Add character to the line 66 * Insert a character [bound to all insert keys] 67 */ 68protected el_action_t 69ed_insert(EditLine *el, wint_t c) 70{ 71 int count = el->el_state.argument; 72 73 if (c == '\0') 74 return CC_ERROR; 75 76 if (el->el_line.lastchar + el->el_state.argument >= 77 el->el_line.limit) { 78 /* end of buffer space, try to allocate more */ 79 if (!ch_enlargebufs(el, (size_t) count)) 80 return CC_ERROR; /* error allocating more */ 81 } 82 83 if (count == 1) { 84 if (el->el_state.inputmode == MODE_INSERT 85 || el->el_line.cursor >= el->el_line.lastchar) 86 c_insert(el, 1); 87 88 *el->el_line.cursor++ = c; 89 re_fastaddc(el); /* fast refresh for one char. */ 90 } else { 91 if (el->el_state.inputmode != MODE_REPLACE_1) 92 c_insert(el, el->el_state.argument); 93 94 while (count-- && el->el_line.cursor < el->el_line.lastchar) 95 *el->el_line.cursor++ = c; 96 re_refresh(el); 97 } 98 99 if (el->el_state.inputmode == MODE_REPLACE_1) 100 return vi_command_mode(el, 0); 101 102 return CC_NORM; 103} 104 105 106/* ed_delete_prev_word(): 107 * Delete from beginning of current word to cursor 108 * [M-^?] [^W] 109 */ 110protected el_action_t 111/*ARGSUSED*/ 112ed_delete_prev_word(EditLine *el, wint_t c __attribute__((__unused__))) 113{ 114 Char *cp, *p, *kp; 115 116 if (el->el_line.cursor == el->el_line.buffer) 117 return CC_ERROR; 118 119 cp = c__prev_word(el->el_line.cursor, el->el_line.buffer, 120 el->el_state.argument, ce__isword); 121 122 for (p = cp, kp = el->el_chared.c_kill.buf; p < el->el_line.cursor; p++) 123 *kp++ = *p; 124 el->el_chared.c_kill.last = kp; 125 126 c_delbefore(el, (int)(el->el_line.cursor - cp));/* delete before dot */ 127 el->el_line.cursor = cp; 128 if (el->el_line.cursor < el->el_line.buffer) 129 el->el_line.cursor = el->el_line.buffer; /* bounds check */ 130 return CC_REFRESH; 131} 132 133 134/* ed_delete_next_char(): 135 * Delete character under cursor 136 * [^D] [x] 137 */ 138protected el_action_t 139/*ARGSUSED*/ 140ed_delete_next_char(EditLine *el, wint_t c) 141{ 142#ifdef notdef /* XXX */ 143#define EL el->el_line 144 (void) fprintf(el->el_errlfile, 145 "\nD(b: %x(%s) c: %x(%s) last: %x(%s) limit: %x(%s)\n", 146 EL.buffer, EL.buffer, EL.cursor, EL.cursor, EL.lastchar, 147 EL.lastchar, EL.limit, EL.limit); 148#endif 149 if (el->el_line.cursor == el->el_line.lastchar) { 150 /* if I'm at the end */ 151 if (el->el_map.type == MAP_VI) { 152 if (el->el_line.cursor == el->el_line.buffer) { 153 /* if I'm also at the beginning */ 154#ifdef KSHVI 155 return CC_ERROR; 156#else 157 /* then do an EOF */ 158 terminal_writec(el, c); 159 return CC_EOF; 160#endif 161 } else { 162#ifdef KSHVI 163 el->el_line.cursor--; 164#else 165 return CC_ERROR; 166#endif 167 } 168 } else { 169 if (el->el_line.cursor != el->el_line.buffer) 170 el->el_line.cursor--; 171 else 172 return CC_ERROR; 173 } 174 } 175 c_delafter(el, el->el_state.argument); /* delete after dot */ 176 if (el->el_line.cursor >= el->el_line.lastchar && 177 el->el_line.cursor > el->el_line.buffer) 178 /* bounds check */ 179 el->el_line.cursor = el->el_line.lastchar - 1; 180 return CC_REFRESH; 181} 182 183 184/* ed_kill_line(): 185 * Cut to the end of line 186 * [^K] [^K] 187 */ 188protected el_action_t 189/*ARGSUSED*/ 190ed_kill_line(EditLine *el, wint_t c __attribute__((__unused__))) 191{ 192 Char *kp, *cp; 193 194 cp = el->el_line.cursor; 195 kp = el->el_chared.c_kill.buf; 196 while (cp < el->el_line.lastchar) 197 *kp++ = *cp++; /* copy it */ 198 el->el_chared.c_kill.last = kp; 199 /* zap! -- delete to end */ 200 el->el_line.lastchar = el->el_line.cursor; 201 return CC_REFRESH; 202} 203 204 205/* ed_move_to_end(): 206 * Move cursor to the end of line 207 * [^E] [^E] 208 */ 209protected el_action_t 210/*ARGSUSED*/ 211ed_move_to_end(EditLine *el, wint_t c __attribute__((__unused__))) 212{ 213 214 el->el_line.cursor = el->el_line.lastchar; 215 if (el->el_map.type == MAP_VI) { 216 if (el->el_chared.c_vcmd.action != NOP) { 217 cv_delfini(el); 218 return CC_REFRESH; 219 } 220#ifdef VI_MOVE 221 el->el_line.cursor--; 222#endif 223 } 224 return CC_CURSOR; 225} 226 227 228/* ed_move_to_beg(): 229 * Move cursor to the beginning of line 230 * [^A] [^A] 231 */ 232protected el_action_t 233/*ARGSUSED*/ 234ed_move_to_beg(EditLine *el, wint_t c __attribute__((__unused__))) 235{ 236 237 el->el_line.cursor = el->el_line.buffer; 238 239 if (el->el_map.type == MAP_VI) { 240 /* We want FIRST non space character */ 241 while (Isspace(*el->el_line.cursor)) 242 el->el_line.cursor++; 243 if (el->el_chared.c_vcmd.action != NOP) { 244 cv_delfini(el); 245 return CC_REFRESH; 246 } 247 } 248 return CC_CURSOR; 249} 250 251 252/* ed_transpose_chars(): 253 * Exchange the character to the left of the cursor with the one under it 254 * [^T] [^T] 255 */ 256protected el_action_t 257ed_transpose_chars(EditLine *el, wint_t c) 258{ 259 260 if (el->el_line.cursor < el->el_line.lastchar) { 261 if (el->el_line.lastchar <= &el->el_line.buffer[1]) 262 return CC_ERROR; 263 else 264 el->el_line.cursor++; 265 } 266 if (el->el_line.cursor > &el->el_line.buffer[1]) { 267 /* must have at least two chars entered */ 268 c = el->el_line.cursor[-2]; 269 el->el_line.cursor[-2] = el->el_line.cursor[-1]; 270 el->el_line.cursor[-1] = c; 271 return CC_REFRESH; 272 } else 273 return CC_ERROR; 274} 275 276 277/* ed_next_char(): 278 * Move to the right one character 279 * [^F] [^F] 280 */ 281protected el_action_t 282/*ARGSUSED*/ 283ed_next_char(EditLine *el, wint_t c __attribute__((__unused__))) 284{ 285 Char *lim = el->el_line.lastchar; 286 287 if (el->el_line.cursor >= lim || 288 (el->el_line.cursor == lim - 1 && 289 el->el_map.type == MAP_VI && 290 el->el_chared.c_vcmd.action == NOP)) 291 return CC_ERROR; 292 293 el->el_line.cursor += el->el_state.argument; 294 if (el->el_line.cursor > lim) 295 el->el_line.cursor = lim; 296 297 if (el->el_map.type == MAP_VI) 298 if (el->el_chared.c_vcmd.action != NOP) { 299 cv_delfini(el); 300 return CC_REFRESH; 301 } 302 return CC_CURSOR; 303} 304 305 306/* ed_prev_word(): 307 * Move to the beginning of the current word 308 * [M-b] [b] 309 */ 310protected el_action_t 311/*ARGSUSED*/ 312ed_prev_word(EditLine *el, wint_t c __attribute__((__unused__))) 313{ 314 315 if (el->el_line.cursor == el->el_line.buffer) 316 return CC_ERROR; 317 318 el->el_line.cursor = c__prev_word(el->el_line.cursor, 319 el->el_line.buffer, 320 el->el_state.argument, 321 ce__isword); 322 323 if (el->el_map.type == MAP_VI) 324 if (el->el_chared.c_vcmd.action != NOP) { 325 cv_delfini(el); 326 return CC_REFRESH; 327 } 328 return CC_CURSOR; 329} 330 331 332/* ed_prev_char(): 333 * Move to the left one character 334 * [^B] [^B] 335 */ 336protected el_action_t 337/*ARGSUSED*/ 338ed_prev_char(EditLine *el, wint_t c __attribute__((__unused__))) 339{ 340 341 if (el->el_line.cursor > el->el_line.buffer) { 342 el->el_line.cursor -= el->el_state.argument; 343 if (el->el_line.cursor < el->el_line.buffer) 344 el->el_line.cursor = el->el_line.buffer; 345 346 if (el->el_map.type == MAP_VI) 347 if (el->el_chared.c_vcmd.action != NOP) { 348 cv_delfini(el); 349 return CC_REFRESH; 350 } 351 return CC_CURSOR; 352 } else 353 return CC_ERROR; 354} 355 356 357/* ed_quoted_insert(): 358 * Add the next character typed verbatim 359 * [^V] [^V] 360 */ 361protected el_action_t 362ed_quoted_insert(EditLine *el, wint_t c) 363{ 364 int num; 365 Char tc; 366 367 tty_quotemode(el); 368 num = FUN(el,getc)(el, &tc); 369 c = tc; 370 tty_noquotemode(el); 371 if (num == 1) 372 return ed_insert(el, c); 373 else 374 return ed_end_of_file(el, 0); 375} 376 377 378/* ed_digit(): 379 * Adds to argument or enters a digit 380 */ 381protected el_action_t 382ed_digit(EditLine *el, wint_t c) 383{ 384 385 if (!Isdigit(c)) 386 return CC_ERROR; 387 388 if (el->el_state.doingarg) { 389 /* if doing an arg, add this in... */ 390 if (el->el_state.lastcmd == EM_UNIVERSAL_ARGUMENT) 391 el->el_state.argument = c - '0'; 392 else { 393 if (el->el_state.argument > 1000000) 394 return CC_ERROR; 395 el->el_state.argument = 396 (el->el_state.argument * 10) + (c - '0'); 397 } 398 return CC_ARGHACK; 399 } 400 401 return ed_insert(el, c); 402} 403 404 405/* ed_argument_digit(): 406 * Digit that starts argument 407 * For ESC-n 408 */ 409protected el_action_t 410ed_argument_digit(EditLine *el, wint_t c) 411{ 412 413 if (!Isdigit(c)) 414 return CC_ERROR; 415 416 if (el->el_state.doingarg) { 417 if (el->el_state.argument > 1000000) 418 return CC_ERROR; 419 el->el_state.argument = (el->el_state.argument * 10) + 420 (c - '0'); 421 } else { /* else starting an argument */ 422 el->el_state.argument = c - '0'; 423 el->el_state.doingarg = 1; 424 } 425 return CC_ARGHACK; 426} 427 428 429/* ed_unassigned(): 430 * Indicates unbound character 431 * Bound to keys that are not assigned 432 */ 433protected el_action_t 434/*ARGSUSED*/ 435ed_unassigned(EditLine *el, wint_t c __attribute__((__unused__))) 436{ 437 438 return CC_ERROR; 439} 440 441 442/** 443 ** TTY key handling. 444 **/ 445 446/* ed_tty_sigint(): 447 * Tty interrupt character 448 * [^C] 449 */ 450protected el_action_t 451/*ARGSUSED*/ 452ed_tty_sigint(EditLine *el __attribute__((__unused__)), 453 wint_t c __attribute__((__unused__))) 454{ 455 456 return CC_NORM; 457} 458 459 460/* ed_tty_dsusp(): 461 * Tty delayed suspend character 462 * [^Y] 463 */ 464protected el_action_t 465/*ARGSUSED*/ 466ed_tty_dsusp(EditLine *el __attribute__((__unused__)), 467 wint_t c __attribute__((__unused__))) 468{ 469 470 return CC_NORM; 471} 472 473 474/* ed_tty_flush_output(): 475 * Tty flush output characters 476 * [^O] 477 */ 478protected el_action_t 479/*ARGSUSED*/ 480ed_tty_flush_output(EditLine *el __attribute__((__unused__)), 481 wint_t c __attribute__((__unused__))) 482{ 483 484 return CC_NORM; 485} 486 487 488/* ed_tty_sigquit(): 489 * Tty quit character 490 * [^\] 491 */ 492protected el_action_t 493/*ARGSUSED*/ 494ed_tty_sigquit(EditLine *el __attribute__((__unused__)), 495 wint_t c __attribute__((__unused__))) 496{ 497 498 return CC_NORM; 499} 500 501 502/* ed_tty_sigtstp(): 503 * Tty suspend character 504 * [^Z] 505 */ 506protected el_action_t 507/*ARGSUSED*/ 508ed_tty_sigtstp(EditLine *el __attribute__((__unused__)), 509 wint_t c __attribute__((__unused__))) 510{ 511 512 return CC_NORM; 513} 514 515 516/* ed_tty_stop_output(): 517 * Tty disallow output characters 518 * [^S] 519 */ 520protected el_action_t 521/*ARGSUSED*/ 522ed_tty_stop_output(EditLine *el __attribute__((__unused__)), 523 wint_t c __attribute__((__unused__))) 524{ 525 526 return CC_NORM; 527} 528 529 530/* ed_tty_start_output(): 531 * Tty allow output characters 532 * [^Q] 533 */ 534protected el_action_t 535/*ARGSUSED*/ 536ed_tty_start_output(EditLine *el __attribute__((__unused__)), 537 wint_t c __attribute__((__unused__))) 538{ 539 540 return CC_NORM; 541} 542 543 544/* ed_newline(): 545 * Execute command 546 * [^J] 547 */ 548protected el_action_t 549/*ARGSUSED*/ 550ed_newline(EditLine *el, wint_t c __attribute__((__unused__))) 551{ 552 553 re_goto_bottom(el); 554 *el->el_line.lastchar++ = '\n'; 555 *el->el_line.lastchar = '\0'; 556 return CC_NEWLINE; 557} 558 559 560/* ed_delete_prev_char(): 561 * Delete the character to the left of the cursor 562 * [^?] 563 */ 564protected el_action_t 565/*ARGSUSED*/ 566ed_delete_prev_char(EditLine *el, wint_t c __attribute__((__unused__))) 567{ 568 569 if (el->el_line.cursor <= el->el_line.buffer) 570 return CC_ERROR; 571 572 c_delbefore(el, el->el_state.argument); 573 el->el_line.cursor -= el->el_state.argument; 574 if (el->el_line.cursor < el->el_line.buffer) 575 el->el_line.cursor = el->el_line.buffer; 576 return CC_REFRESH; 577} 578 579 580/* ed_clear_screen(): 581 * Clear screen leaving current line at the top 582 * [^L] 583 */ 584protected el_action_t 585/*ARGSUSED*/ 586ed_clear_screen(EditLine *el, wint_t c __attribute__((__unused__))) 587{ 588 589 terminal_clear_screen(el); /* clear the whole real screen */ 590 re_clear_display(el); /* reset everything */ 591 return CC_REFRESH; 592} 593 594 595/* ed_redisplay(): 596 * Redisplay everything 597 * ^R 598 */ 599protected el_action_t 600/*ARGSUSED*/ 601ed_redisplay(EditLine *el __attribute__((__unused__)), 602 wint_t c __attribute__((__unused__))) 603{ 604 605 return CC_REDISPLAY; 606} 607 608 609/* ed_start_over(): 610 * Erase current line and start from scratch 611 * [^G] 612 */ 613protected el_action_t 614/*ARGSUSED*/ 615ed_start_over(EditLine *el, wint_t c __attribute__((__unused__))) 616{ 617 618 ch_reset(el, 0); 619 return CC_REFRESH; 620} 621 622 623/* ed_sequence_lead_in(): 624 * First character in a bound sequence 625 * Placeholder for external keys 626 */ 627protected el_action_t 628/*ARGSUSED*/ 629ed_sequence_lead_in(EditLine *el __attribute__((__unused__)), 630 wint_t c __attribute__((__unused__))) 631{ 632 633 return CC_NORM; 634} 635 636 637/* ed_prev_history(): 638 * Move to the previous history line 639 * [^P] [k] 640 */ 641protected el_action_t 642/*ARGSUSED*/ 643ed_prev_history(EditLine *el, wint_t c __attribute__((__unused__))) 644{ 645 char beep = 0; 646 int sv_event = el->el_history.eventno; 647 648 el->el_chared.c_undo.len = -1; 649 *el->el_line.lastchar = '\0'; /* just in case */ 650 651 if (el->el_history.eventno == 0) { /* save the current buffer 652 * away */ 653 (void) Strncpy(el->el_history.buf, el->el_line.buffer, 654 EL_BUFSIZ); 655 el->el_history.last = el->el_history.buf + 656 (el->el_line.lastchar - el->el_line.buffer); 657 } 658 el->el_history.eventno += el->el_state.argument; 659 660 if (hist_get(el) == CC_ERROR) { 661 if (el->el_map.type == MAP_VI) { 662 el->el_history.eventno = sv_event; 663 } 664 beep = 1; 665 /* el->el_history.eventno was fixed by first call */ 666 (void) hist_get(el); 667 } 668 if (beep) 669 return CC_REFRESH_BEEP; 670 return CC_REFRESH; 671} 672 673 674/* ed_next_history(): 675 * Move to the next history line 676 * [^N] [j] 677 */ 678protected el_action_t 679/*ARGSUSED*/ 680ed_next_history(EditLine *el, wint_t c __attribute__((__unused__))) 681{ 682 el_action_t beep = CC_REFRESH, rval; 683 684 el->el_chared.c_undo.len = -1; 685 *el->el_line.lastchar = '\0'; /* just in case */ 686 687 el->el_history.eventno -= el->el_state.argument; 688 689 if (el->el_history.eventno < 0) { 690 el->el_history.eventno = 0; 691 beep = CC_REFRESH_BEEP; 692 } 693 rval = hist_get(el); 694 if (rval == CC_REFRESH) 695 return beep; 696 return rval; 697 698} 699 700 701/* ed_search_prev_history(): 702 * Search previous in history for a line matching the current 703 * next search history [M-P] [K] 704 */ 705protected el_action_t 706/*ARGSUSED*/ 707ed_search_prev_history(EditLine *el, wint_t c __attribute__((__unused__))) 708{ 709 const Char *hp; 710 int h; 711 int found = 0; 712 713 el->el_chared.c_vcmd.action = NOP; 714 el->el_chared.c_undo.len = -1; 715 *el->el_line.lastchar = '\0'; /* just in case */ 716 if (el->el_history.eventno < 0) { 717#ifdef DEBUG_EDIT 718 (void) fprintf(el->el_errfile, 719 "e_prev_search_hist(): eventno < 0;\n"); 720#endif 721 el->el_history.eventno = 0; 722 return CC_ERROR; 723 } 724 if (el->el_history.eventno == 0) { 725 (void) Strncpy(el->el_history.buf, el->el_line.buffer, 726 EL_BUFSIZ); 727 el->el_history.last = el->el_history.buf + 728 (el->el_line.lastchar - el->el_line.buffer); 729 } 730 if (el->el_history.ref == NULL) 731 return CC_ERROR; 732 733 hp = HIST_FIRST(el); 734 if (hp == NULL) 735 return CC_ERROR; 736 737 c_setpat(el); /* Set search pattern !! */ 738 739 for (h = 1; h <= el->el_history.eventno; h++) 740 hp = HIST_NEXT(el); 741 742 while (hp != NULL) { 743#ifdef SDEBUG 744 (void) fprintf(el->el_errfile, "Comparing with \"%s\"\n", hp); 745#endif 746 if ((Strncmp(hp, el->el_line.buffer, (size_t) 747 (el->el_line.lastchar - el->el_line.buffer)) || 748 hp[el->el_line.lastchar - el->el_line.buffer]) && 749 c_hmatch(el, hp)) { 750 found = 1; 751 break; 752 } 753 h++; 754 hp = HIST_NEXT(el); 755 } 756 757 if (!found) { 758#ifdef SDEBUG 759 (void) fprintf(el->el_errfile, "not found\n"); 760#endif 761 return CC_ERROR; 762 } 763 el->el_history.eventno = h; 764 765 return hist_get(el); 766} 767 768 769/* ed_search_next_history(): 770 * Search next in history for a line matching the current 771 * [M-N] [J] 772 */ 773protected el_action_t 774/*ARGSUSED*/ 775ed_search_next_history(EditLine *el, wint_t c __attribute__((__unused__))) 776{ 777 const Char *hp; 778 int h; 779 int found = 0; 780 781 el->el_chared.c_vcmd.action = NOP; 782 el->el_chared.c_undo.len = -1; 783 *el->el_line.lastchar = '\0'; /* just in case */ 784 785 if (el->el_history.eventno == 0) 786 return CC_ERROR; 787 788 if (el->el_history.ref == NULL) 789 return CC_ERROR; 790 791 hp = HIST_FIRST(el); 792 if (hp == NULL) 793 return CC_ERROR; 794 795 c_setpat(el); /* Set search pattern !! */ 796 797 for (h = 1; h < el->el_history.eventno && hp; h++) { 798#ifdef SDEBUG 799 (void) fprintf(el->el_errfile, "Comparing with \"%s\"\n", hp); 800#endif 801 if ((Strncmp(hp, el->el_line.buffer, (size_t) 802 (el->el_line.lastchar - el->el_line.buffer)) || 803 hp[el->el_line.lastchar - el->el_line.buffer]) && 804 c_hmatch(el, hp)) 805 found = h; 806 hp = HIST_NEXT(el); 807 } 808 809 if (!found) { /* is it the current history number? */ 810 if (!c_hmatch(el, el->el_history.buf)) { 811#ifdef SDEBUG 812 (void) fprintf(el->el_errfile, "not found\n"); 813#endif 814 return CC_ERROR; 815 } 816 } 817 el->el_history.eventno = found; 818 819 return hist_get(el); 820} 821 822 823/* ed_prev_line(): 824 * Move up one line 825 * Could be [k] [^p] 826 */ 827protected el_action_t 828/*ARGSUSED*/ 829ed_prev_line(EditLine *el, wint_t c __attribute__((__unused__))) 830{ 831 Char *ptr; 832 int nchars = c_hpos(el); 833 834 /* 835 * Move to the line requested 836 */ 837 if (*(ptr = el->el_line.cursor) == '\n') 838 ptr--; 839 840 for (; ptr >= el->el_line.buffer; ptr--) 841 if (*ptr == '\n' && --el->el_state.argument <= 0) 842 break; 843 844 if (el->el_state.argument > 0) 845 return CC_ERROR; 846 847 /* 848 * Move to the beginning of the line 849 */ 850 for (ptr--; ptr >= el->el_line.buffer && *ptr != '\n'; ptr--) 851 continue; 852 853 /* 854 * Move to the character requested 855 */ 856 for (ptr++; 857 nchars-- > 0 && ptr < el->el_line.lastchar && *ptr != '\n'; 858 ptr++) 859 continue; 860 861 el->el_line.cursor = ptr; 862 return CC_CURSOR; 863} 864 865 866/* ed_next_line(): 867 * Move down one line 868 * Could be [j] [^n] 869 */ 870protected el_action_t 871/*ARGSUSED*/ 872ed_next_line(EditLine *el, wint_t c __attribute__((__unused__))) 873{ 874 Char *ptr; 875 int nchars = c_hpos(el); 876 877 /* 878 * Move to the line requested 879 */ 880 for (ptr = el->el_line.cursor; ptr < el->el_line.lastchar; ptr++) 881 if (*ptr == '\n' && --el->el_state.argument <= 0) 882 break; 883 884 if (el->el_state.argument > 0) 885 return CC_ERROR; 886 887 /* 888 * Move to the character requested 889 */ 890 for (ptr++; 891 nchars-- > 0 && ptr < el->el_line.lastchar && *ptr != '\n'; 892 ptr++) 893 continue; 894 895 el->el_line.cursor = ptr; 896 return CC_CURSOR; 897} 898 899 900/* ed_command(): 901 * Editline extended command 902 * [M-X] [:] 903 */ 904protected el_action_t 905/*ARGSUSED*/ 906ed_command(EditLine *el, wint_t c __attribute__((__unused__))) 907{ 908 Char tmpbuf[EL_BUFSIZ]; 909 int tmplen; 910 911 tmplen = c_gets(el, tmpbuf, STR("\n: ")); 912 terminal__putc(el, '\n'); 913 914 if (tmplen < 0 || (tmpbuf[tmplen] = 0, parse_line(el, tmpbuf)) == -1) 915 terminal_beep(el); 916 917 el->el_map.current = el->el_map.key; 918 re_clear_display(el); 919 return CC_REFRESH; 920} 921