1/* $NetBSD: common.c,v 1.27 2011/07/29 15:20:39 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#if !defined(lint) && !defined(SCCSID) 37#if 0 38static char sccsid[] = "@(#)common.c 8.1 (Berkeley) 6/4/93"; 39#else 40__RCSID("$NetBSD: common.c,v 1.27 2011/07/29 15:20:39 christos Exp $"); 41#endif 42#endif /* not lint && not SCCSID */ 43 44/* 45 * common.c: Common Editor functions 46 */ 47#include "el.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, Int 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, Int 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, Int 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, Int c __attribute__((__unused__))) 141{ 142#ifdef DEBUG_EDIT 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, Int 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, Int 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, Int 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, Int 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, Int 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, Int 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, Int 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, Int 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, Int 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, Int 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 __attribute__((__unused__)), 436 Int c __attribute__((__unused__))) 437{ 438 439 return CC_ERROR; 440} 441 442 443/** 444 ** TTY key handling. 445 **/ 446 447/* ed_tty_sigint(): 448 * Tty interrupt character 449 * [^C] 450 */ 451protected el_action_t 452/*ARGSUSED*/ 453ed_tty_sigint(EditLine *el __attribute__((__unused__)), 454 Int c __attribute__((__unused__))) 455{ 456 457 return CC_NORM; 458} 459 460 461/* ed_tty_dsusp(): 462 * Tty delayed suspend character 463 * [^Y] 464 */ 465protected el_action_t 466/*ARGSUSED*/ 467ed_tty_dsusp(EditLine *el __attribute__((__unused__)), 468 Int c __attribute__((__unused__))) 469{ 470 471 return CC_NORM; 472} 473 474 475/* ed_tty_flush_output(): 476 * Tty flush output characters 477 * [^O] 478 */ 479protected el_action_t 480/*ARGSUSED*/ 481ed_tty_flush_output(EditLine *el __attribute__((__unused__)), 482 Int c __attribute__((__unused__))) 483{ 484 485 return CC_NORM; 486} 487 488 489/* ed_tty_sigquit(): 490 * Tty quit character 491 * [^\] 492 */ 493protected el_action_t 494/*ARGSUSED*/ 495ed_tty_sigquit(EditLine *el __attribute__((__unused__)), 496 Int c __attribute__((__unused__))) 497{ 498 499 return CC_NORM; 500} 501 502 503/* ed_tty_sigtstp(): 504 * Tty suspend character 505 * [^Z] 506 */ 507protected el_action_t 508/*ARGSUSED*/ 509ed_tty_sigtstp(EditLine *el __attribute__((__unused__)), 510 Int c __attribute__((__unused__))) 511{ 512 513 return CC_NORM; 514} 515 516 517/* ed_tty_stop_output(): 518 * Tty disallow output characters 519 * [^S] 520 */ 521protected el_action_t 522/*ARGSUSED*/ 523ed_tty_stop_output(EditLine *el __attribute__((__unused__)), 524 Int c __attribute__((__unused__))) 525{ 526 527 return CC_NORM; 528} 529 530 531/* ed_tty_start_output(): 532 * Tty allow output characters 533 * [^Q] 534 */ 535protected el_action_t 536/*ARGSUSED*/ 537ed_tty_start_output(EditLine *el __attribute__((__unused__)), 538 Int c __attribute__((__unused__))) 539{ 540 541 return CC_NORM; 542} 543 544 545/* ed_newline(): 546 * Execute command 547 * [^J] 548 */ 549protected el_action_t 550/*ARGSUSED*/ 551ed_newline(EditLine *el, Int c __attribute__((__unused__))) 552{ 553 554 re_goto_bottom(el); 555 *el->el_line.lastchar++ = '\n'; 556 *el->el_line.lastchar = '\0'; 557 return CC_NEWLINE; 558} 559 560 561/* ed_delete_prev_char(): 562 * Delete the character to the left of the cursor 563 * [^?] 564 */ 565protected el_action_t 566/*ARGSUSED*/ 567ed_delete_prev_char(EditLine *el, Int c __attribute__((__unused__))) 568{ 569 570 if (el->el_line.cursor <= el->el_line.buffer) 571 return CC_ERROR; 572 573 c_delbefore(el, el->el_state.argument); 574 el->el_line.cursor -= el->el_state.argument; 575 if (el->el_line.cursor < el->el_line.buffer) 576 el->el_line.cursor = el->el_line.buffer; 577 return CC_REFRESH; 578} 579 580 581/* ed_clear_screen(): 582 * Clear screen leaving current line at the top 583 * [^L] 584 */ 585protected el_action_t 586/*ARGSUSED*/ 587ed_clear_screen(EditLine *el, Int c __attribute__((__unused__))) 588{ 589 590 terminal_clear_screen(el); /* clear the whole real screen */ 591 re_clear_display(el); /* reset everything */ 592 return CC_REFRESH; 593} 594 595 596/* ed_redisplay(): 597 * Redisplay everything 598 * ^R 599 */ 600protected el_action_t 601/*ARGSUSED*/ 602ed_redisplay(EditLine *el __attribute__((__unused__)), 603 Int c __attribute__((__unused__))) 604{ 605 606 return CC_REDISPLAY; 607} 608 609 610/* ed_start_over(): 611 * Erase current line and start from scratch 612 * [^G] 613 */ 614protected el_action_t 615/*ARGSUSED*/ 616ed_start_over(EditLine *el, Int c __attribute__((__unused__))) 617{ 618 619 ch_reset(el, 0); 620 return CC_REFRESH; 621} 622 623 624/* ed_sequence_lead_in(): 625 * First character in a bound sequence 626 * Placeholder for external keys 627 */ 628protected el_action_t 629/*ARGSUSED*/ 630ed_sequence_lead_in(EditLine *el __attribute__((__unused__)), 631 Int c __attribute__((__unused__))) 632{ 633 634 return CC_NORM; 635} 636 637 638/* ed_prev_history(): 639 * Move to the previous history line 640 * [^P] [k] 641 */ 642protected el_action_t 643/*ARGSUSED*/ 644ed_prev_history(EditLine *el, Int c __attribute__((__unused__))) 645{ 646 char beep = 0; 647 int sv_event = el->el_history.eventno; 648 649 el->el_chared.c_undo.len = -1; 650 *el->el_line.lastchar = '\0'; /* just in case */ 651 652 if (el->el_history.eventno == 0) { /* save the current buffer 653 * away */ 654 (void) Strncpy(el->el_history.buf, el->el_line.buffer, 655 EL_BUFSIZ); 656 el->el_history.last = el->el_history.buf + 657 (el->el_line.lastchar - el->el_line.buffer); 658 } 659 el->el_history.eventno += el->el_state.argument; 660 661 if (hist_get(el) == CC_ERROR) { 662 if (el->el_map.type == MAP_VI) { 663 el->el_history.eventno = sv_event; 664 665 } 666 beep = 1; 667 /* el->el_history.eventno was fixed by first call */ 668 (void) hist_get(el); 669 } 670 if (beep) 671 return CC_REFRESH_BEEP; 672 return CC_REFRESH; 673} 674 675 676/* ed_next_history(): 677 * Move to the next history line 678 * [^N] [j] 679 */ 680protected el_action_t 681/*ARGSUSED*/ 682ed_next_history(EditLine *el, Int c __attribute__((__unused__))) 683{ 684 el_action_t beep = CC_REFRESH, rval; 685 686 el->el_chared.c_undo.len = -1; 687 *el->el_line.lastchar = '\0'; /* just in case */ 688 689 el->el_history.eventno -= el->el_state.argument; 690 691 if (el->el_history.eventno < 0) { 692 el->el_history.eventno = 0; 693 beep = CC_REFRESH_BEEP; 694 } 695 rval = hist_get(el); 696 if (rval == CC_REFRESH) 697 return beep; 698 return rval; 699 700} 701 702 703/* ed_search_prev_history(): 704 * Search previous in history for a line matching the current 705 * next search history [M-P] [K] 706 */ 707protected el_action_t 708/*ARGSUSED*/ 709ed_search_prev_history(EditLine *el, Int c __attribute__((__unused__))) 710{ 711 const Char *hp; 712 int h; 713 bool_t found = 0; 714 715 el->el_chared.c_vcmd.action = NOP; 716 el->el_chared.c_undo.len = -1; 717 *el->el_line.lastchar = '\0'; /* just in case */ 718 if (el->el_history.eventno < 0) { 719#ifdef DEBUG_EDIT 720 (void) fprintf(el->el_errfile, 721 "e_prev_search_hist(): eventno < 0;\n"); 722#endif 723 el->el_history.eventno = 0; 724 return CC_ERROR; 725 } 726 if (el->el_history.eventno == 0) { 727 (void) Strncpy(el->el_history.buf, el->el_line.buffer, 728 EL_BUFSIZ); 729 el->el_history.last = el->el_history.buf + 730 (el->el_line.lastchar - el->el_line.buffer); 731 } 732 if (el->el_history.ref == NULL) 733 return CC_ERROR; 734 735 hp = HIST_FIRST(el); 736 if (hp == NULL) 737 return CC_ERROR; 738 739 c_setpat(el); /* Set search pattern !! */ 740 741 for (h = 1; h <= el->el_history.eventno; h++) 742 hp = HIST_NEXT(el); 743 744 while (hp != NULL) { 745#ifdef SDEBUG 746 (void) fprintf(el->el_errfile, "Comparing with \"%s\"\n", hp); 747#endif 748 if ((Strncmp(hp, el->el_line.buffer, (size_t) 749 (el->el_line.lastchar - el->el_line.buffer)) || 750 hp[el->el_line.lastchar - el->el_line.buffer]) && 751 c_hmatch(el, hp)) { 752 found++; 753 break; 754 } 755 h++; 756 hp = HIST_NEXT(el); 757 } 758 759 if (!found) { 760#ifdef SDEBUG 761 (void) fprintf(el->el_errfile, "not found\n"); 762#endif 763 return CC_ERROR; 764 } 765 el->el_history.eventno = h; 766 767 return hist_get(el); 768} 769 770 771/* ed_search_next_history(): 772 * Search next in history for a line matching the current 773 * [M-N] [J] 774 */ 775protected el_action_t 776/*ARGSUSED*/ 777ed_search_next_history(EditLine *el, Int c __attribute__((__unused__))) 778{ 779 const Char *hp; 780 int h; 781 bool_t found = 0; 782 783 el->el_chared.c_vcmd.action = NOP; 784 el->el_chared.c_undo.len = -1; 785 *el->el_line.lastchar = '\0'; /* just in case */ 786 787 if (el->el_history.eventno == 0) 788 return CC_ERROR; 789 790 if (el->el_history.ref == NULL) 791 return CC_ERROR; 792 793 hp = HIST_FIRST(el); 794 if (hp == NULL) 795 return CC_ERROR; 796 797 c_setpat(el); /* Set search pattern !! */ 798 799 for (h = 1; h < el->el_history.eventno && hp; h++) { 800#ifdef SDEBUG 801 (void) fprintf(el->el_errfile, "Comparing with \"%s\"\n", hp); 802#endif 803 if ((Strncmp(hp, el->el_line.buffer, (size_t) 804 (el->el_line.lastchar - el->el_line.buffer)) || 805 hp[el->el_line.lastchar - el->el_line.buffer]) && 806 c_hmatch(el, hp)) 807 found = h; 808 hp = HIST_NEXT(el); 809 } 810 811 if (!found) { /* is it the current history number? */ 812 if (!c_hmatch(el, el->el_history.buf)) { 813#ifdef SDEBUG 814 (void) fprintf(el->el_errfile, "not found\n"); 815#endif 816 return CC_ERROR; 817 } 818 } 819 el->el_history.eventno = found; 820 821 return hist_get(el); 822} 823 824 825/* ed_prev_line(): 826 * Move up one line 827 * Could be [k] [^p] 828 */ 829protected el_action_t 830/*ARGSUSED*/ 831ed_prev_line(EditLine *el, Int c __attribute__((__unused__))) 832{ 833 Char *ptr; 834 int nchars = c_hpos(el); 835 836 /* 837 * Move to the line requested 838 */ 839 if (*(ptr = el->el_line.cursor) == '\n') 840 ptr--; 841 842 for (; ptr >= el->el_line.buffer; ptr--) 843 if (*ptr == '\n' && --el->el_state.argument <= 0) 844 break; 845 846 if (el->el_state.argument > 0) 847 return CC_ERROR; 848 849 /* 850 * Move to the beginning of the line 851 */ 852 for (ptr--; ptr >= el->el_line.buffer && *ptr != '\n'; ptr--) 853 continue; 854 855 /* 856 * Move to the character requested 857 */ 858 for (ptr++; 859 nchars-- > 0 && ptr < el->el_line.lastchar && *ptr != '\n'; 860 ptr++) 861 continue; 862 863 el->el_line.cursor = ptr; 864 return CC_CURSOR; 865} 866 867 868/* ed_next_line(): 869 * Move down one line 870 * Could be [j] [^n] 871 */ 872protected el_action_t 873/*ARGSUSED*/ 874ed_next_line(EditLine *el, Int c __attribute__((__unused__))) 875{ 876 Char *ptr; 877 int nchars = c_hpos(el); 878 879 /* 880 * Move to the line requested 881 */ 882 for (ptr = el->el_line.cursor; ptr < el->el_line.lastchar; ptr++) 883 if (*ptr == '\n' && --el->el_state.argument <= 0) 884 break; 885 886 if (el->el_state.argument > 0) 887 return CC_ERROR; 888 889 /* 890 * Move to the character requested 891 */ 892 for (ptr++; 893 nchars-- > 0 && ptr < el->el_line.lastchar && *ptr != '\n'; 894 ptr++) 895 continue; 896 897 el->el_line.cursor = ptr; 898 return CC_CURSOR; 899} 900 901 902/* ed_command(): 903 * Editline extended command 904 * [M-X] [:] 905 */ 906protected el_action_t 907/*ARGSUSED*/ 908ed_command(EditLine *el, Int c __attribute__((__unused__))) 909{ 910 Char tmpbuf[EL_BUFSIZ]; 911 int tmplen; 912 913 tmplen = c_gets(el, tmpbuf, STR("\n: ")); 914 terminal__putc(el, '\n'); 915 916 if (tmplen < 0 || (tmpbuf[tmplen] = 0, parse_line(el, tmpbuf)) == -1) 917 terminal_beep(el); 918 919 el->el_map.current = el->el_map.key; 920 re_clear_display(el); 921 return CC_REFRESH; 922} 923