lib/libedit/common.c

   1 /*-
   2  * Copyright (c) 1992, 1993
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * This code is derived from software contributed to Berkeley by
   6  * Christos Zoulas of Cornell University.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  * 3. Neither the name of the University nor the names of its contributors
  17  *    may be used to endorse or promote products derived from this software
  18  *    without specific prior written permission.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  23  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  30  * SUCH DAMAGE.
  31  *
  32  *      $NetBSD: common.c,v 1.23 2009/02/27 04:18:45 msaitoh Exp $
  33  */
  34
  35 #if !defined(lint) && !defined(SCCSID)
  36 static char sccsid[] = "@(#)common.c    8.1 (Berkeley) 6/4/93";
  37 #endif /* not lint && not SCCSID */
  38 #include <sys/cdefs.h>
  39 __FBSDID("$FreeBSD$");
  40
  41 /*
  42  * common.c: Common Editor functions
  43  */
  44 #include "sys.h"
  45 #include "el.h"
  46
  47 /* ed_end_of_file():
  48  *      Indicate end of file
  49  *      [^D]
  50  */
  51 protected el_action_t
  52 /*ARGSUSED*/
  53 ed_end_of_file(EditLine *el, int c __unused)
  54 {
  55
  56         re_goto_bottom(el);
  57         *el->el_line.lastchar = '\0';
  58         return (CC_EOF);
  59 }
  60
  61
  62 /* ed_insert():
  63  *      Add character to the line
  64  *      Insert a character [bound to all insert keys]
  65  */
  66 protected el_action_t
  67 ed_insert(EditLine *el, int c)
  68 {
  69         int count = el->el_state.argument;
  70
  71         if (c == '\0')
  72                 return (CC_ERROR);
  73
  74         if (el->el_line.lastchar + el->el_state.argument >=
  75             el->el_line.limit) {
  76                 /* end of buffer space, try to allocate more */
  77                 if (!ch_enlargebufs(el, (size_t) count))
  78                         return CC_ERROR;        /* error allocating more */
  79         }
  80
  81         if (count == 1) {
  82                 if (el->el_state.inputmode == MODE_INSERT
  83                     || el->el_line.cursor >= el->el_line.lastchar)
  84                         c_insert(el, 1);
  85
  86                 *el->el_line.cursor++ = c;
  87                 re_fastaddc(el);                /* fast refresh for one char. */
  88         } else {
  89                 if (el->el_state.inputmode != MODE_REPLACE_1)
  90                         c_insert(el, el->el_state.argument);
  91
  92                 while (count-- && el->el_line.cursor < el->el_line.lastchar)
  93                         *el->el_line.cursor++ = c;
  94                 re_refresh(el);
  95         }
  96
  97         if (el->el_state.inputmode == MODE_REPLACE_1)
  98                 return vi_command_mode(el, 0);
  99
 100         return (CC_NORM);
 101 }
 102
 103
 104 /* ed_delete_prev_word():
 105  *      Delete from beginning of current word to cursor
 106  *      [M-^?] [^W]
 107  */
 108 protected el_action_t
 109 /*ARGSUSED*/
 110 ed_delete_prev_word(EditLine *el, int c __unused)
 111 {
 112         char *cp, *p, *kp;
 113
 114         if (el->el_line.cursor == el->el_line.buffer)
 115                 return (CC_ERROR);
 116
 117         cp = c__prev_word(el->el_line.cursor, el->el_line.buffer,
 118             el->el_state.argument, ce__isword);
 119
 120         for (p = cp, kp = el->el_chared.c_kill.buf; p < el->el_line.cursor; p++)
 121                 *kp++ = *p;
 122         el->el_chared.c_kill.last = kp;
 123
 124         c_delbefore(el, (int)(el->el_line.cursor - cp));/* delete before dot */
 125         el->el_line.cursor = cp;
 126         if (el->el_line.cursor < el->el_line.buffer)
 127                 el->el_line.cursor = el->el_line.buffer; /* bounds check */
 128         return (CC_REFRESH);
 129 }
 130
 131
 132 /* ed_delete_next_char():
 133  *      Delete character under cursor
 134  *      [^D] [x]
 135  */
 136 protected el_action_t
 137 /*ARGSUSED*/
 138 ed_delete_next_char(EditLine *el, int c)
 139 {
 140 #ifdef notdef                   /* XXX */
 141 #define EL      el->el_line
 142         (void) fprintf(el->el_errlfile,
 143             "\nD(b: %x(%s)  c: %x(%s) last: %x(%s) limit: %x(%s)\n",
 144             EL.buffer, EL.buffer, EL.cursor, EL.cursor, EL.lastchar,
 145             EL.lastchar, EL.limit, EL.limit);
 146 #endif
 147         if (el->el_line.cursor == el->el_line.lastchar) {
 148                         /* if I'm at the end */
 149                 if (el->el_map.type == MAP_VI) {
 150                         if (el->el_line.cursor == el->el_line.buffer) {
 151                                 /* if I'm also at the beginning */
 152 #ifdef KSHVI
 153                                 return (CC_ERROR);
 154 #else
 155                                 /* then do an EOF */
 156                                 term_writechar(el, c);
 157                                 return (CC_EOF);
 158 #endif
 159                         } else {
 160 #ifdef KSHVI
 161                                 el->el_line.cursor--;
 162 #else
 163                                 return (CC_ERROR);
 164 #endif
 165                         }
 166                 } else
 167                         return (CC_ERROR);
 168         }
 169         c_delafter(el, el->el_state.argument);  /* delete after dot */
 170         if (el->el_map.type == MAP_VI &&
 171             el->el_line.cursor >= el->el_line.lastchar &&
 172             el->el_line.cursor > el->el_line.buffer)
 173                         /* bounds check */
 174                 el->el_line.cursor = el->el_line.lastchar - 1;
 175         return (CC_REFRESH);
 176 }
 177
 178
 179 /* ed_kill_line():
 180  *      Cut to the end of line
 181  *      [^K] [^K]
 182  */
 183 protected el_action_t
 184 /*ARGSUSED*/
 185 ed_kill_line(EditLine *el, int c __unused)
 186 {
 187         char *kp, *cp;
 188
 189         cp = el->el_line.cursor;
 190         kp = el->el_chared.c_kill.buf;
 191         while (cp < el->el_line.lastchar)
 192                 *kp++ = *cp++;  /* copy it */
 193         el->el_chared.c_kill.last = kp;
 194                         /* zap! -- delete to end */
 195         el->el_line.lastchar = el->el_line.cursor;
 196         return (CC_REFRESH);
 197 }
 198
 199
 200 /* ed_move_to_end():
 201  *      Move cursor to the end of line
 202  *      [^E] [^E]
 203  */
 204 protected el_action_t
 205 /*ARGSUSED*/
 206 ed_move_to_end(EditLine *el, int c __unused)
 207 {
 208
 209         el->el_line.cursor = el->el_line.lastchar;
 210         if (el->el_map.type == MAP_VI) {
 211                 if (el->el_chared.c_vcmd.action != NOP) {
 212                         cv_delfini(el);
 213                         return (CC_REFRESH);
 214                 }
 215         }
 216         return (CC_CURSOR);
 217 }
 218
 219
 220 /* ed_move_to_beg():
 221  *      Move cursor to the beginning of line
 222  *      [^A] [^A]
 223  */
 224 protected el_action_t
 225 /*ARGSUSED*/
 226 ed_move_to_beg(EditLine *el, int c __unused)
 227 {
 228
 229         el->el_line.cursor = el->el_line.buffer;
 230
 231         if (el->el_map.type == MAP_VI) {
 232                         /* We want FIRST non space character */
 233                 while (isspace((unsigned char) *el->el_line.cursor))
 234                         el->el_line.cursor++;
 235                 if (el->el_chared.c_vcmd.action != NOP) {
 236                         cv_delfini(el);
 237                         return (CC_REFRESH);
 238                 }
 239         }
 240         return (CC_CURSOR);
 241 }
 242
 243
 244 /* ed_transpose_chars():
 245  *      Exchange the character to the left of the cursor with the one under it
 246  *      [^T] [^T]
 247  */
 248 protected el_action_t
 249 ed_transpose_chars(EditLine *el, int c)
 250 {
 251
 252         if (el->el_line.cursor < el->el_line.lastchar) {
 253                 if (el->el_line.lastchar <= &el->el_line.buffer[1])
 254                         return (CC_ERROR);
 255                 else
 256                         el->el_line.cursor++;
 257         }
 258         if (el->el_line.cursor > &el->el_line.buffer[1]) {
 259                 /* must have at least two chars entered */
 260                 c = el->el_line.cursor[-2];
 261                 el->el_line.cursor[-2] = el->el_line.cursor[-1];
 262                 el->el_line.cursor[-1] = c;
 263                 return (CC_REFRESH);
 264         } else
 265                 return (CC_ERROR);
 266 }
 267
 268
 269 /* ed_next_char():
 270  *      Move to the right one character
 271  *      [^F] [^F]
 272  */
 273 protected el_action_t
 274 /*ARGSUSED*/
 275 ed_next_char(EditLine *el, int c __unused)
 276 {
 277         char *lim = el->el_line.lastchar;
 278
 279         if (el->el_line.cursor >= lim ||
 280             (el->el_line.cursor == lim - 1 &&
 281             el->el_map.type == MAP_VI &&
 282             el->el_chared.c_vcmd.action == NOP))
 283                 return (CC_ERROR);
 284
 285         el->el_line.cursor += el->el_state.argument;
 286         if (el->el_line.cursor > lim)
 287                 el->el_line.cursor = lim;
 288
 289         if (el->el_map.type == MAP_VI)
 290                 if (el->el_chared.c_vcmd.action != NOP) {
 291                         cv_delfini(el);
 292                         return (CC_REFRESH);
 293                 }
 294         return (CC_CURSOR);
 295 }
 296
 297
 298 /* ed_prev_word():
 299  *      Move to the beginning of the current word
 300  *      [M-b] [b]
 301  */
 302 protected el_action_t
 303 /*ARGSUSED*/
 304 ed_prev_word(EditLine *el, int c __unused)
 305 {
 306
 307         if (el->el_line.cursor == el->el_line.buffer)
 308                 return (CC_ERROR);
 309
 310         el->el_line.cursor = c__prev_word(el->el_line.cursor,
 311             el->el_line.buffer,
 312             el->el_state.argument,
 313             ce__isword);
 314
 315         if (el->el_map.type == MAP_VI)
 316                 if (el->el_chared.c_vcmd.action != NOP) {
 317                         cv_delfini(el);
 318                         return (CC_REFRESH);
 319                 }
 320         return (CC_CURSOR);
 321 }
 322
 323
 324 /* ed_prev_char():
 325  *      Move to the left one character
 326  *      [^B] [^B]
 327  */
 328 protected el_action_t
 329 /*ARGSUSED*/
 330 ed_prev_char(EditLine *el, int c __unused)
 331 {
 332
 333         if (el->el_line.cursor > el->el_line.buffer) {
 334                 el->el_line.cursor -= el->el_state.argument;
 335                 if (el->el_line.cursor < el->el_line.buffer)
 336                         el->el_line.cursor = el->el_line.buffer;
 337
 338                 if (el->el_map.type == MAP_VI)
 339                         if (el->el_chared.c_vcmd.action != NOP) {
 340                                 cv_delfini(el);
 341                                 return (CC_REFRESH);
 342                         }
 343                 return (CC_CURSOR);
 344         } else
 345                 return (CC_ERROR);
 346 }
 347
 348
 349 /* ed_quoted_insert():
 350  *      Add the next character typed verbatim
 351  *      [^V] [^V]
 352  */
 353 protected el_action_t
 354 ed_quoted_insert(EditLine *el, int c)
 355 {
 356         int num;
 357         char tc;
 358
 359         tty_quotemode(el);
 360         num = el_getc(el, &tc);
 361         c = (unsigned char) tc;
 362         tty_noquotemode(el);
 363         if (num == 1)
 364                 return (ed_insert(el, c));
 365         else
 366                 return (ed_end_of_file(el, 0));
 367 }
 368
 369
 370 /* ed_digit():
 371  *      Adds to argument or enters a digit
 372  */
 373 protected el_action_t
 374 ed_digit(EditLine *el, int c)
 375 {
 376
 377         if (!isdigit((unsigned char) c))
 378                 return (CC_ERROR);
 379
 380         if (el->el_state.doingarg) {
 381                         /* if doing an arg, add this in... */
 382                 if (el->el_state.lastcmd == EM_UNIVERSAL_ARGUMENT)
 383                         el->el_state.argument = c - '0';
 384                 else {
 385                         if (el->el_state.argument > 1000000)
 386                                 return (CC_ERROR);
 387                         el->el_state.argument =
 388                             (el->el_state.argument * 10) + (c - '0');
 389                 }
 390                 return (CC_ARGHACK);
 391         }
 392
 393         return ed_insert(el, c);
 394 }
 395
 396
 397 /* ed_argument_digit():
 398  *      Digit that starts argument
 399  *      For ESC-n
 400  */
 401 protected el_action_t
 402 ed_argument_digit(EditLine *el, int c)
 403 {
 404
 405         if (!isdigit((unsigned char) c))
 406                 return (CC_ERROR);
 407
 408         if (el->el_state.doingarg) {
 409                 if (el->el_state.argument > 1000000)
 410                         return (CC_ERROR);
 411                 el->el_state.argument = (el->el_state.argument * 10) +
 412                     (c - '0');
 413         } else {                /* else starting an argument */
 414                 el->el_state.argument = c - '0';
 415                 el->el_state.doingarg = 1;
 416         }
 417         return (CC_ARGHACK);
 418 }
 419
 420
 421 /* ed_unassigned():
 422  *      Indicates unbound character
 423  *      Bound to keys that are not assigned
 424  */
 425 protected el_action_t
 426 /*ARGSUSED*/
 427 ed_unassigned(EditLine *el, int c __unused)
 428 {
 429
 430         return (CC_ERROR);
 431 }
 432
 433
 434 /**
 435  ** TTY key handling.
 436  **/
 437
 438 /* ed_tty_sigint():
 439  *      Tty interrupt character
 440  *      [^C]
 441  */
 442 protected el_action_t
 443 /*ARGSUSED*/
 444 ed_tty_sigint(EditLine *el __unused,
 445               int c __unused)
 446 {
 447
 448         return (CC_NORM);
 449 }
 450
 451
 452 /* ed_tty_dsusp():
 453  *      Tty delayed suspend character
 454  *      [^Y]
 455  */
 456 protected el_action_t
 457 /*ARGSUSED*/
 458 ed_tty_dsusp(EditLine *el __unused,
 459              int c __unused)
 460 {
 461
 462         return (CC_NORM);
 463 }
 464
 465
 466 /* ed_tty_flush_output():
 467  *      Tty flush output characters
 468  *      [^O]
 469  */
 470 protected el_action_t
 471 /*ARGSUSED*/
 472 ed_tty_flush_output(EditLine *el __unused,
 473                     int c __unused)
 474 {
 475
 476         return (CC_NORM);
 477 }
 478
 479
 480 /* ed_tty_sigquit():
 481  *      Tty quit character
 482  *      [^\]
 483  */
 484 protected el_action_t
 485 /*ARGSUSED*/
 486 ed_tty_sigquit(EditLine *el __unused,
 487                int c __unused)
 488 {
 489
 490         return (CC_NORM);
 491 }
 492
 493
 494 /* ed_tty_sigtstp():
 495  *      Tty suspend character
 496  *      [^Z]
 497  */
 498 protected el_action_t
 499 /*ARGSUSED*/
 500 ed_tty_sigtstp(EditLine *el __unused,
 501                int c __unused)
 502 {
 503
 504         return (CC_NORM);
 505 }
 506
 507
 508 /* ed_tty_stop_output():
 509  *      Tty disallow output characters
 510  *      [^S]
 511  */
 512 protected el_action_t
 513 /*ARGSUSED*/
 514 ed_tty_stop_output(EditLine *el __unused,
 515                    int c __unused)
 516 {
 517
 518         return (CC_NORM);
 519 }
 520
 521
 522 /* ed_tty_start_output():
 523  *      Tty allow output characters
 524  *      [^Q]
 525  */
 526 protected el_action_t
 527 /*ARGSUSED*/
 528 ed_tty_start_output(EditLine *el __unused,
 529                     int c __unused)
 530 {
 531
 532         return (CC_NORM);
 533 }
 534
 535
 536 /* ed_newline():
 537  *      Execute command
 538  *      [^J]
 539  */
 540 protected el_action_t
 541 /*ARGSUSED*/
 542 ed_newline(EditLine *el, int c __unused)
 543 {
 544
 545         re_goto_bottom(el);
 546         *el->el_line.lastchar++ = '\n';
 547         *el->el_line.lastchar = '\0';
 548         return (CC_NEWLINE);
 549 }
 550
 551
 552 /* ed_delete_prev_char():
 553  *      Delete the character to the left of the cursor
 554  *      [^?]
 555  */
 556 protected el_action_t
 557 /*ARGSUSED*/
 558 ed_delete_prev_char(EditLine *el, int c __unused)
 559 {
 560
 561         if (el->el_line.cursor <= el->el_line.buffer)
 562                 return (CC_ERROR);
 563
 564         c_delbefore(el, el->el_state.argument);
 565         el->el_line.cursor -= el->el_state.argument;
 566         if (el->el_line.cursor < el->el_line.buffer)
 567                 el->el_line.cursor = el->el_line.buffer;
 568         return (CC_REFRESH);
 569 }
 570
 571
 572 /* ed_clear_screen():
 573  *      Clear screen leaving current line at the top
 574  *      [^L]
 575  */
 576 protected el_action_t
 577 /*ARGSUSED*/
 578 ed_clear_screen(EditLine *el, int c __unused)
 579 {
 580
 581         term_clear_screen(el);  /* clear the whole real screen */
 582         re_clear_display(el);   /* reset everything */
 583         return (CC_REFRESH);
 584 }
 585
 586
 587 /* ed_redisplay():
 588  *      Redisplay everything
 589  *      ^R
 590  */
 591 protected el_action_t
 592 /*ARGSUSED*/
 593 ed_redisplay(EditLine *el __unused,
 594              int c __unused)
 595 {
 596
 597         return (CC_REDISPLAY);
 598 }
 599
 600
 601 /* ed_start_over():
 602  *      Erase current line and start from scratch
 603  *      [^G]
 604  */
 605 protected el_action_t
 606 /*ARGSUSED*/
 607 ed_start_over(EditLine *el, int c __unused)
 608 {
 609
 610         ch_reset(el, 0);
 611         return (CC_REFRESH);
 612 }
 613
 614
 615 /* ed_sequence_lead_in():
 616  *      First character in a bound sequence
 617  *      Placeholder for external keys
 618  */
 619 protected el_action_t
 620 /*ARGSUSED*/
 621 ed_sequence_lead_in(EditLine *el __unused,
 622                     int c __unused)
 623 {
 624
 625         return (CC_NORM);
 626 }
 627
 628
 629 /* ed_prev_history():
 630  *      Move to the previous history line
 631  *      [^P] [k]
 632  */
 633 protected el_action_t
 634 /*ARGSUSED*/
 635 ed_prev_history(EditLine *el, int c __unused)
 636 {
 637         char beep = 0;
 638         int sv_event = el->el_history.eventno;
 639
 640         el->el_chared.c_undo.len = -1;
 641         *el->el_line.lastchar = '\0';           /* just in case */
 642
 643         if (el->el_history.eventno == 0) {      /* save the current buffer
 644                                                  * away */
 645                 (void) strncpy(el->el_history.buf, el->el_line.buffer,
 646                     EL_BUFSIZ);
 647                 el->el_history.last = el->el_history.buf +
 648                     (el->el_line.lastchar - el->el_line.buffer);
 649         }
 650         el->el_history.eventno += el->el_state.argument;
 651
 652         if (hist_get(el) == CC_ERROR) {
 653                 if (el->el_map.type == MAP_VI) {
 654                         el->el_history.eventno = sv_event;
 655                         return CC_ERROR;
 656                 }
 657                 beep = 1;
 658                 /* el->el_history.eventno was fixed by first call */
 659                 (void) hist_get(el);
 660         }
 661         if (beep)
 662                 return CC_REFRESH_BEEP;
 663         return CC_REFRESH;
 664 }
 665
 666
 667 /* ed_next_history():
 668  *      Move to the next history line
 669  *      [^N] [j]
 670  */
 671 protected el_action_t
 672 /*ARGSUSED*/
 673 ed_next_history(EditLine *el, int c __unused)
 674 {
 675         el_action_t beep = CC_REFRESH, rval;
 676
 677         el->el_chared.c_undo.len = -1;
 678         *el->el_line.lastchar = '\0';   /* just in case */
 679
 680         el->el_history.eventno -= el->el_state.argument;
 681
 682         if (el->el_history.eventno < 0) {
 683                 el->el_history.eventno = 0;
 684                 beep = CC_REFRESH_BEEP;
 685         }
 686         rval = hist_get(el);
 687         if (rval == CC_REFRESH)
 688                 return beep;
 689         return rval;
 690
 691 }
 692
 693
 694 /* ed_search_prev_history():
 695  *      Search previous in history for a line matching the current
 696  *      next search history [M-P] [K]
 697  */
 698 protected el_action_t
 699 /*ARGSUSED*/
 700 ed_search_prev_history(EditLine *el, int c __unused)
 701 {
 702         const char *hp;
 703         int h;
 704         bool_t found = 0;
 705
 706         el->el_chared.c_vcmd.action = NOP;
 707         el->el_chared.c_undo.len = -1;
 708         *el->el_line.lastchar = '\0';   /* just in case */
 709         if (el->el_history.eventno < 0) {
 710 #ifdef DEBUG_EDIT
 711                 (void) fprintf(el->el_errfile,
 712                     "e_prev_search_hist(): eventno < 0;\n");
 713 #endif
 714                 el->el_history.eventno = 0;
 715                 return (CC_ERROR);
 716         }
 717         if (el->el_history.eventno == 0) {
 718                 (void) strncpy(el->el_history.buf, el->el_line.buffer,
 719                     EL_BUFSIZ);
 720                 el->el_history.last = el->el_history.buf +
 721                     (el->el_line.lastchar - el->el_line.buffer);
 722         }
 723         if (el->el_history.ref == NULL)
 724                 return (CC_ERROR);
 725
 726         hp = HIST_FIRST(el);
 727         if (hp == NULL)
 728                 return (CC_ERROR);
 729
 730         c_setpat(el);           /* Set search pattern !! */
 731
 732         for (h = 1; h <= el->el_history.eventno; h++)
 733                 hp = HIST_NEXT(el);
 734
 735         while (hp != NULL) {
 736 #ifdef SDEBUG
 737                 (void) fprintf(el->el_errfile, "Comparing with \"%s\"\n", hp);
 738 #endif
 739                 if ((strncmp(hp, el->el_line.buffer, (size_t)
 740                             (el->el_line.lastchar - el->el_line.buffer)) ||
 741                         hp[el->el_line.lastchar - el->el_line.buffer]) &&
 742                     c_hmatch(el, hp)) {
 743                         found++;
 744                         break;
 745                 }
 746                 h++;
 747                 hp = HIST_NEXT(el);
 748         }
 749
 750         if (!found) {
 751 #ifdef SDEBUG
 752                 (void) fprintf(el->el_errfile, "not found\n");
 753 #endif
 754                 return (CC_ERROR);
 755         }
 756         el->el_history.eventno = h;
 757
 758         return (hist_get(el));
 759 }
 760
 761
 762 /* ed_search_next_history():
 763  *      Search next in history for a line matching the current
 764  *      [M-N] [J]
 765  */
 766 protected el_action_t
 767 /*ARGSUSED*/
 768 ed_search_next_history(EditLine *el, int c __unused)
 769 {
 770         const char *hp;
 771         int h;
 772         bool_t found = 0;
 773
 774         el->el_chared.c_vcmd.action = NOP;
 775         el->el_chared.c_undo.len = -1;
 776         *el->el_line.lastchar = '\0';   /* just in case */
 777
 778         if (el->el_history.eventno == 0)
 779                 return (CC_ERROR);
 780
 781         if (el->el_history.ref == NULL)
 782                 return (CC_ERROR);
 783
 784         hp = HIST_FIRST(el);
 785         if (hp == NULL)
 786                 return (CC_ERROR);
 787
 788         c_setpat(el);           /* Set search pattern !! */
 789
 790         for (h = 1; h < el->el_history.eventno && hp; h++) {
 791 #ifdef SDEBUG
 792                 (void) fprintf(el->el_errfile, "Comparing with \"%s\"\n", hp);
 793 #endif
 794                 if ((strncmp(hp, el->el_line.buffer, (size_t)
 795                             (el->el_line.lastchar - el->el_line.buffer)) ||
 796                         hp[el->el_line.lastchar - el->el_line.buffer]) &&
 797                     c_hmatch(el, hp))
 798                         found = h;
 799                 hp = HIST_NEXT(el);
 800         }
 801
 802         if (!found) {           /* is it the current history number? */
 803                 if (!c_hmatch(el, el->el_history.buf)) {
 804 #ifdef SDEBUG
 805                         (void) fprintf(el->el_errfile, "not found\n");
 806 #endif
 807                         return (CC_ERROR);
 808                 }
 809         }
 810         el->el_history.eventno = found;
 811
 812         return (hist_get(el));
 813 }
 814
 815
 816 /* ed_prev_line():
 817  *      Move up one line
 818  *      Could be [k] [^p]
 819  */
 820 protected el_action_t
 821 /*ARGSUSED*/
 822 ed_prev_line(EditLine *el, int c __unused)
 823 {
 824         char *ptr;
 825         int nchars = c_hpos(el);
 826
 827         /*
 828          * Move to the line requested
 829          */
 830         if (*(ptr = el->el_line.cursor) == '\n')
 831                 ptr--;
 832
 833         for (; ptr >= el->el_line.buffer; ptr--)
 834                 if (*ptr == '\n' && --el->el_state.argument <= 0)
 835                         break;
 836
 837         if (el->el_state.argument > 0)
 838                 return (CC_ERROR);
 839
 840         /*
 841          * Move to the beginning of the line
 842          */
 843         for (ptr--; ptr >= el->el_line.buffer && *ptr != '\n'; ptr--)
 844                 continue;
 845
 846         /*
 847          * Move to the character requested
 848          */
 849         for (ptr++;
 850             nchars-- > 0 && ptr < el->el_line.lastchar && *ptr != '\n';
 851             ptr++)
 852                 continue;
 853
 854         el->el_line.cursor = ptr;
 855         return (CC_CURSOR);
 856 }
 857
 858
 859 /* ed_next_line():
 860  *      Move down one line
 861  *      Could be [j] [^n]
 862  */
 863 protected el_action_t
 864 /*ARGSUSED*/
 865 ed_next_line(EditLine *el, int c __unused)
 866 {
 867         char *ptr;
 868         int nchars = c_hpos(el);
 869
 870         /*
 871          * Move to the line requested
 872          */
 873         for (ptr = el->el_line.cursor; ptr < el->el_line.lastchar; ptr++)
 874                 if (*ptr == '\n' && --el->el_state.argument <= 0)
 875                         break;
 876
 877         if (el->el_state.argument > 0)
 878                 return (CC_ERROR);
 879
 880         /*
 881          * Move to the character requested
 882          */
 883         for (ptr++;
 884             nchars-- > 0 && ptr < el->el_line.lastchar && *ptr != '\n';
 885             ptr++)
 886                 continue;
 887
 888         el->el_line.cursor = ptr;
 889         return (CC_CURSOR);
 890 }
 891
 892
 893 /* ed_command():
 894  *      Editline extended command
 895  *      [M-X] [:]
 896  */
 897 protected el_action_t
 898 /*ARGSUSED*/
 899 ed_command(EditLine *el, int c __unused)
 900 {
 901         char tmpbuf[EL_BUFSIZ];
 902         int tmplen;
 903
 904         tmplen = c_gets(el, tmpbuf, "\n: ");
 905         term__putc(el, '\n');
 906
 907         if (tmplen < 0 || (tmpbuf[tmplen] = 0, parse_line(el, tmpbuf)) == -1)
 908                 term_beep(el);
 909
 910         el->el_map.current = el->el_map.key;
 911         re_clear_display(el);
 912         return CC_REFRESH;
 913 }