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 1.19 2006/03/06 21:11:56 christos 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, 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                         if (el->el_line.cursor != el->el_line.buffer)
 168                                 el->el_line.cursor--;
 169                         else
 170                                 return (CC_ERROR);
 171                 }
 172         }
 173         c_delafter(el, el->el_state.argument);  /* delete after dot */
 174         if (el->el_line.cursor >= el->el_line.lastchar &&
 175             el->el_line.cursor > el->el_line.buffer)
 176                         /* bounds check */
 177                 el->el_line.cursor = el->el_line.lastchar - 1;
 178         return (CC_REFRESH);
 179 }
 180
 181
 182 /* ed_kill_line():
 183  *      Cut to the end of line
 184  *      [^K] [^K]
 185  */
 186 protected el_action_t
 187 /*ARGSUSED*/
 188 ed_kill_line(EditLine *el, int c __unused)
 189 {
 190         char *kp, *cp;
 191
 192         cp = el->el_line.cursor;
 193         kp = el->el_chared.c_kill.buf;
 194         while (cp < el->el_line.lastchar)
 195                 *kp++ = *cp++;  /* copy it */
 196         el->el_chared.c_kill.last = kp;
 197                         /* zap! -- delete to end */
 198         el->el_line.lastchar = el->el_line.cursor;
 199         return (CC_REFRESH);
 200 }
 201
 202
 203 /* ed_move_to_end():
 204  *      Move cursor to the end of line
 205  *      [^E] [^E]
 206  */
 207 protected el_action_t
 208 /*ARGSUSED*/
 209 ed_move_to_end(EditLine *el, int c __unused)
 210 {
 211
 212         el->el_line.cursor = el->el_line.lastchar;
 213         if (el->el_map.type == MAP_VI) {
 214 #ifdef VI_MOVE
 215                 el->el_line.cursor--;
 216 #endif
 217                 if (el->el_chared.c_vcmd.action != NOP) {
 218                         cv_delfini(el);
 219                         return (CC_REFRESH);
 220                 }
 221         }
 222         return (CC_CURSOR);
 223 }
 224
 225
 226 /* ed_move_to_beg():
 227  *      Move cursor to the beginning of line
 228  *      [^A] [^A]
 229  */
 230 protected el_action_t
 231 /*ARGSUSED*/
 232 ed_move_to_beg(EditLine *el, int c __unused)
 233 {
 234
 235         el->el_line.cursor = el->el_line.buffer;
 236
 237         if (el->el_map.type == MAP_VI) {
 238                         /* We want FIRST non space character */
 239                 while (isspace((unsigned char) *el->el_line.cursor))
 240                         el->el_line.cursor++;
 241                 if (el->el_chared.c_vcmd.action != NOP) {
 242                         cv_delfini(el);
 243                         return (CC_REFRESH);
 244                 }
 245         }
 246         return (CC_CURSOR);
 247 }
 248
 249
 250 /* ed_transpose_chars():
 251  *      Exchange the character to the left of the cursor with the one under it
 252  *      [^T] [^T]
 253  */
 254 protected el_action_t
 255 ed_transpose_chars(EditLine *el, int c)
 256 {
 257
 258         if (el->el_line.cursor < el->el_line.lastchar) {
 259                 if (el->el_line.lastchar <= &el->el_line.buffer[1])
 260                         return (CC_ERROR);
 261                 else
 262                         el->el_line.cursor++;
 263         }
 264         if (el->el_line.cursor > &el->el_line.buffer[1]) {
 265                 /* must have at least two chars entered */
 266                 c = el->el_line.cursor[-2];
 267                 el->el_line.cursor[-2] = el->el_line.cursor[-1];
 268                 el->el_line.cursor[-1] = c;
 269                 return (CC_REFRESH);
 270         } else
 271                 return (CC_ERROR);
 272 }
 273
 274
 275 /* ed_next_char():
 276  *      Move to the right one character
 277  *      [^F] [^F]
 278  */
 279 protected el_action_t
 280 /*ARGSUSED*/
 281 ed_next_char(EditLine *el, int c __unused)
 282 {
 283         char *lim = el->el_line.lastchar;
 284
 285         if (el->el_line.cursor >= lim ||
 286             (el->el_line.cursor == lim - 1 &&
 287             el->el_map.type == MAP_VI &&
 288             el->el_chared.c_vcmd.action == NOP))
 289                 return (CC_ERROR);
 290
 291         el->el_line.cursor += el->el_state.argument;
 292         if (el->el_line.cursor > lim)
 293                 el->el_line.cursor = lim;
 294
 295         if (el->el_map.type == MAP_VI)
 296                 if (el->el_chared.c_vcmd.action != NOP) {
 297                         cv_delfini(el);
 298                         return (CC_REFRESH);
 299                 }
 300         return (CC_CURSOR);
 301 }
 302
 303
 304 /* ed_prev_word():
 305  *      Move to the beginning of the current word
 306  *      [M-b] [b]
 307  */
 308 protected el_action_t
 309 /*ARGSUSED*/
 310 ed_prev_word(EditLine *el, int c __unused)
 311 {
 312
 313         if (el->el_line.cursor == el->el_line.buffer)
 314                 return (CC_ERROR);
 315
 316         el->el_line.cursor = c__prev_word(el->el_line.cursor,
 317             el->el_line.buffer,
 318             el->el_state.argument,
 319             ce__isword);
 320
 321         if (el->el_map.type == MAP_VI)
 322                 if (el->el_chared.c_vcmd.action != NOP) {
 323                         cv_delfini(el);
 324                         return (CC_REFRESH);
 325                 }
 326         return (CC_CURSOR);
 327 }
 328
 329
 330 /* ed_prev_char():
 331  *      Move to the left one character
 332  *      [^B] [^B]
 333  */
 334 protected el_action_t
 335 /*ARGSUSED*/
 336 ed_prev_char(EditLine *el, int c __unused)
 337 {
 338
 339         if (el->el_line.cursor > el->el_line.buffer) {
 340                 el->el_line.cursor -= el->el_state.argument;
 341                 if (el->el_line.cursor < el->el_line.buffer)
 342                         el->el_line.cursor = el->el_line.buffer;
 343
 344                 if (el->el_map.type == MAP_VI)
 345                         if (el->el_chared.c_vcmd.action != NOP) {
 346                                 cv_delfini(el);
 347                                 return (CC_REFRESH);
 348                         }
 349                 return (CC_CURSOR);
 350         } else
 351                 return (CC_ERROR);
 352 }
 353
 354
 355 /* ed_quoted_insert():
 356  *      Add the next character typed verbatim
 357  *      [^V] [^V]
 358  */
 359 protected el_action_t
 360 ed_quoted_insert(EditLine *el, int c)
 361 {
 362         int num;
 363         char tc;
 364
 365         tty_quotemode(el);
 366         num = el_getc(el, &tc);
 367         c = (unsigned char) tc;
 368         tty_noquotemode(el);
 369         if (num == 1)
 370                 return (ed_insert(el, c));
 371         else
 372                 return (ed_end_of_file(el, 0));
 373 }
 374
 375
 376 /* ed_digit():
 377  *      Adds to argument or enters a digit
 378  */
 379 protected el_action_t
 380 ed_digit(EditLine *el, int c)
 381 {
 382
 383         if (!isdigit((unsigned char) c))
 384                 return (CC_ERROR);
 385
 386         if (el->el_state.doingarg) {
 387                         /* if doing an arg, add this in... */
 388                 if (el->el_state.lastcmd == EM_UNIVERSAL_ARGUMENT)
 389                         el->el_state.argument = c - '0';
 390                 else {
 391                         if (el->el_state.argument > 1000000)
 392                                 return (CC_ERROR);
 393                         el->el_state.argument =
 394                             (el->el_state.argument * 10) + (c - '0');
 395                 }
 396                 return (CC_ARGHACK);
 397         }
 398
 399         return ed_insert(el, c);
 400 }
 401
 402
 403 /* ed_argument_digit():
 404  *      Digit that starts argument
 405  *      For ESC-n
 406  */
 407 protected el_action_t
 408 ed_argument_digit(EditLine *el, int c)
 409 {
 410
 411         if (!isdigit((unsigned char) c))
 412                 return (CC_ERROR);
 413
 414         if (el->el_state.doingarg) {
 415                 if (el->el_state.argument > 1000000)
 416                         return (CC_ERROR);
 417                 el->el_state.argument = (el->el_state.argument * 10) +
 418                     (c - '0');
 419         } else {                /* else starting an argument */
 420                 el->el_state.argument = c - '0';
 421                 el->el_state.doingarg = 1;
 422         }
 423         return (CC_ARGHACK);
 424 }
 425
 426
 427 /* ed_unassigned():
 428  *      Indicates unbound character
 429  *      Bound to keys that are not assigned
 430  */
 431 protected el_action_t
 432 /*ARGSUSED*/
 433 ed_unassigned(EditLine *el, int c __unused)
 434 {
 435
 436         return (CC_ERROR);
 437 }
 438
 439
 440 /**
 441  ** TTY key handling.
 442  **/
 443
 444 /* ed_tty_sigint():
 445  *      Tty interrupt character
 446  *      [^C]
 447  */
 448 protected el_action_t
 449 /*ARGSUSED*/
 450 ed_tty_sigint(EditLine *el __unused,
 451               int c __unused)
 452 {
 453
 454         return (CC_NORM);
 455 }
 456
 457
 458 /* ed_tty_dsusp():
 459  *      Tty delayed suspend character
 460  *      [^Y]
 461  */
 462 protected el_action_t
 463 /*ARGSUSED*/
 464 ed_tty_dsusp(EditLine *el __unused,
 465              int c __unused)
 466 {
 467
 468         return (CC_NORM);
 469 }
 470
 471
 472 /* ed_tty_flush_output():
 473  *      Tty flush output characters
 474  *      [^O]
 475  */
 476 protected el_action_t
 477 /*ARGSUSED*/
 478 ed_tty_flush_output(EditLine *el __unused,
 479                     int c __unused)
 480 {
 481
 482         return (CC_NORM);
 483 }
 484
 485
 486 /* ed_tty_sigquit():
 487  *      Tty quit character
 488  *      [^\]
 489  */
 490 protected el_action_t
 491 /*ARGSUSED*/
 492 ed_tty_sigquit(EditLine *el __unused,
 493                int c __unused)
 494 {
 495
 496         return (CC_NORM);
 497 }
 498
 499
 500 /* ed_tty_sigtstp():
 501  *      Tty suspend character
 502  *      [^Z]
 503  */
 504 protected el_action_t
 505 /*ARGSUSED*/
 506 ed_tty_sigtstp(EditLine *el __unused,
 507                int c __unused)
 508 {
 509
 510         return (CC_NORM);
 511 }
 512
 513
 514 /* ed_tty_stop_output():
 515  *      Tty disallow output characters
 516  *      [^S]
 517  */
 518 protected el_action_t
 519 /*ARGSUSED*/
 520 ed_tty_stop_output(EditLine *el __unused,
 521                    int c __unused)
 522 {
 523
 524         return (CC_NORM);
 525 }
 526
 527
 528 /* ed_tty_start_output():
 529  *      Tty allow output characters
 530  *      [^Q]
 531  */
 532 protected el_action_t
 533 /*ARGSUSED*/
 534 ed_tty_start_output(EditLine *el __unused,
 535                     int c __unused)
 536 {
 537
 538         return (CC_NORM);
 539 }
 540
 541
 542 /* ed_newline():
 543  *      Execute command
 544  *      [^J]
 545  */
 546 protected el_action_t
 547 /*ARGSUSED*/
 548 ed_newline(EditLine *el, int c __unused)
 549 {
 550
 551         re_goto_bottom(el);
 552         *el->el_line.lastchar++ = '\n';
 553         *el->el_line.lastchar = '\0';
 554         return (CC_NEWLINE);
 555 }
 556
 557
 558 /* ed_delete_prev_char():
 559  *      Delete the character to the left of the cursor
 560  *      [^?]
 561  */
 562 protected el_action_t
 563 /*ARGSUSED*/
 564 ed_delete_prev_char(EditLine *el, int c __unused)
 565 {
 566
 567         if (el->el_line.cursor <= el->el_line.buffer)
 568                 return (CC_ERROR);
 569
 570         c_delbefore(el, el->el_state.argument);
 571         el->el_line.cursor -= el->el_state.argument;
 572         if (el->el_line.cursor < el->el_line.buffer)
 573                 el->el_line.cursor = el->el_line.buffer;
 574         return (CC_REFRESH);
 575 }
 576
 577
 578 /* ed_clear_screen():
 579  *      Clear screen leaving current line at the top
 580  *      [^L]
 581  */
 582 protected el_action_t
 583 /*ARGSUSED*/
 584 ed_clear_screen(EditLine *el, int c __unused)
 585 {
 586
 587         term_clear_screen(el);  /* clear the whole real screen */
 588         re_clear_display(el);   /* reset everything */
 589         return (CC_REFRESH);
 590 }
 591
 592
 593 /* ed_redisplay():
 594  *      Redisplay everything
 595  *      ^R
 596  */
 597 protected el_action_t
 598 /*ARGSUSED*/
 599 ed_redisplay(EditLine *el __unused,
 600              int c __unused)
 601 {
 602
 603         return (CC_REDISPLAY);
 604 }
 605
 606
 607 /* ed_start_over():
 608  *      Erase current line and start from scratch
 609  *      [^G]
 610  */
 611 protected el_action_t
 612 /*ARGSUSED*/
 613 ed_start_over(EditLine *el, int c __unused)
 614 {
 615
 616         ch_reset(el, 0);
 617         return (CC_REFRESH);
 618 }
 619
 620
 621 /* ed_sequence_lead_in():
 622  *      First character in a bound sequence
 623  *      Placeholder for external keys
 624  */
 625 protected el_action_t
 626 /*ARGSUSED*/
 627 ed_sequence_lead_in(EditLine *el __unused,
 628                     int c __unused)
 629 {
 630
 631         return (CC_NORM);
 632 }
 633
 634
 635 /* ed_prev_history():
 636  *      Move to the previous history line
 637  *      [^P] [k]
 638  */
 639 protected el_action_t
 640 /*ARGSUSED*/
 641 ed_prev_history(EditLine *el, int c __unused)
 642 {
 643         char beep = 0;
 644         int sv_event = el->el_history.eventno;
 645
 646         el->el_chared.c_undo.len = -1;
 647         *el->el_line.lastchar = '\0';           /* just in case */
 648
 649         if (el->el_history.eventno == 0) {      /* save the current buffer
 650                                                  * away */
 651                 (void) strncpy(el->el_history.buf, el->el_line.buffer,
 652                     EL_BUFSIZ);
 653                 el->el_history.last = el->el_history.buf +
 654                     (el->el_line.lastchar - el->el_line.buffer);
 655         }
 656         el->el_history.eventno += el->el_state.argument;
 657
 658         if (hist_get(el) == CC_ERROR) {
 659                 if (el->el_map.type == MAP_VI) {
 660                         el->el_history.eventno = sv_event;
 661                         return CC_ERROR;
 662                 }
 663                 beep = 1;
 664                 /* el->el_history.eventno was fixed by first call */
 665                 (void) hist_get(el);
 666         }
 667         if (beep)
 668                 return CC_REFRESH_BEEP;
 669         return CC_REFRESH;
 670 }
 671
 672
 673 /* ed_next_history():
 674  *      Move to the next history line
 675  *      [^N] [j]
 676  */
 677 protected el_action_t
 678 /*ARGSUSED*/
 679 ed_next_history(EditLine *el, int c __unused)
 680 {
 681         el_action_t beep = CC_REFRESH, rval;
 682
 683         el->el_chared.c_undo.len = -1;
 684         *el->el_line.lastchar = '\0';   /* just in case */
 685
 686         el->el_history.eventno -= el->el_state.argument;
 687
 688         if (el->el_history.eventno < 0) {
 689                 el->el_history.eventno = 0;
 690                 beep = CC_REFRESH_BEEP;
 691         }
 692         rval = hist_get(el);
 693         if (rval == CC_REFRESH)
 694                 return beep;
 695         return rval;
 696
 697 }
 698
 699
 700 /* ed_search_prev_history():
 701  *      Search previous in history for a line matching the current
 702  *      next search history [M-P] [K]
 703  */
 704 protected el_action_t
 705 /*ARGSUSED*/
 706 ed_search_prev_history(EditLine *el, int c __unused)
 707 {
 708         const char *hp;
 709         int h;
 710         bool_t found = 0;
 711
 712         el->el_chared.c_vcmd.action = NOP;
 713         el->el_chared.c_undo.len = -1;
 714         *el->el_line.lastchar = '\0';   /* just in case */
 715         if (el->el_history.eventno < 0) {
 716 #ifdef DEBUG_EDIT
 717                 (void) fprintf(el->el_errfile,
 718                     "e_prev_search_hist(): eventno < 0;\n");
 719 #endif
 720                 el->el_history.eventno = 0;
 721                 return (CC_ERROR);
 722         }
 723         if (el->el_history.eventno == 0) {
 724                 (void) strncpy(el->el_history.buf, el->el_line.buffer,
 725                     EL_BUFSIZ);
 726                 el->el_history.last = el->el_history.buf +
 727                     (el->el_line.lastchar - el->el_line.buffer);
 728         }
 729         if (el->el_history.ref == NULL)
 730                 return (CC_ERROR);
 731
 732         hp = HIST_FIRST(el);
 733         if (hp == NULL)
 734                 return (CC_ERROR);
 735
 736         c_setpat(el);           /* Set search pattern !! */
 737
 738         for (h = 1; h <= el->el_history.eventno; h++)
 739                 hp = HIST_NEXT(el);
 740
 741         while (hp != NULL) {
 742 #ifdef SDEBUG
 743                 (void) fprintf(el->el_errfile, "Comparing with \"%s\"\n", hp);
 744 #endif
 745                 if ((strncmp(hp, el->el_line.buffer, (size_t)
 746                             (el->el_line.lastchar - el->el_line.buffer)) ||
 747                         hp[el->el_line.lastchar - el->el_line.buffer]) &&
 748                     c_hmatch(el, hp)) {
 749                         found++;
 750                         break;
 751                 }
 752                 h++;
 753                 hp = HIST_NEXT(el);
 754         }
 755
 756         if (!found) {
 757 #ifdef SDEBUG
 758                 (void) fprintf(el->el_errfile, "not found\n");
 759 #endif
 760                 return (CC_ERROR);
 761         }
 762         el->el_history.eventno = h;
 763
 764         return (hist_get(el));
 765 }
 766
 767
 768 /* ed_search_next_history():
 769  *      Search next in history for a line matching the current
 770  *      [M-N] [J]
 771  */
 772 protected el_action_t
 773 /*ARGSUSED*/
 774 ed_search_next_history(EditLine *el, int c __unused)
 775 {
 776         const char *hp;
 777         int h;
 778         bool_t found = 0;
 779
 780         el->el_chared.c_vcmd.action = NOP;
 781         el->el_chared.c_undo.len = -1;
 782         *el->el_line.lastchar = '\0';   /* just in case */
 783
 784         if (el->el_history.eventno == 0)
 785                 return (CC_ERROR);
 786
 787         if (el->el_history.ref == NULL)
 788                 return (CC_ERROR);
 789
 790         hp = HIST_FIRST(el);
 791         if (hp == NULL)
 792                 return (CC_ERROR);
 793
 794         c_setpat(el);           /* Set search pattern !! */
 795
 796         for (h = 1; h < el->el_history.eventno && hp; h++) {
 797 #ifdef SDEBUG
 798                 (void) fprintf(el->el_errfile, "Comparing with \"%s\"\n", hp);
 799 #endif
 800                 if ((strncmp(hp, el->el_line.buffer, (size_t)
 801                             (el->el_line.lastchar - el->el_line.buffer)) ||
 802                         hp[el->el_line.lastchar - el->el_line.buffer]) &&
 803                     c_hmatch(el, hp))
 804                         found = h;
 805                 hp = HIST_NEXT(el);
 806         }
 807
 808         if (!found) {           /* is it the current history number? */
 809                 if (!c_hmatch(el, el->el_history.buf)) {
 810 #ifdef SDEBUG
 811                         (void) fprintf(el->el_errfile, "not found\n");
 812 #endif
 813                         return (CC_ERROR);
 814                 }
 815         }
 816         el->el_history.eventno = found;
 817
 818         return (hist_get(el));
 819 }
 820
 821
 822 /* ed_prev_line():
 823  *      Move up one line
 824  *      Could be [k] [^p]
 825  */
 826 protected el_action_t
 827 /*ARGSUSED*/
 828 ed_prev_line(EditLine *el, int c __unused)
 829 {
 830         char *ptr;
 831         int nchars = c_hpos(el);
 832
 833         /*
 834          * Move to the line requested
 835          */
 836         if (*(ptr = el->el_line.cursor) == '\n')
 837                 ptr--;
 838
 839         for (; ptr >= el->el_line.buffer; ptr--)
 840                 if (*ptr == '\n' && --el->el_state.argument <= 0)
 841                         break;
 842
 843         if (el->el_state.argument > 0)
 844                 return (CC_ERROR);
 845
 846         /*
 847          * Move to the beginning of the line
 848          */
 849         for (ptr--; ptr >= el->el_line.buffer && *ptr != '\n'; ptr--)
 850                 continue;
 851
 852         /*
 853          * Move to the character requested
 854          */
 855         for (ptr++;
 856             nchars-- > 0 && ptr < el->el_line.lastchar && *ptr != '\n';
 857             ptr++)
 858                 continue;
 859
 860         el->el_line.cursor = ptr;
 861         return (CC_CURSOR);
 862 }
 863
 864
 865 /* ed_next_line():
 866  *      Move down one line
 867  *      Could be [j] [^n]
 868  */
 869 protected el_action_t
 870 /*ARGSUSED*/
 871 ed_next_line(EditLine *el, int c __unused)
 872 {
 873         char *ptr;
 874         int nchars = c_hpos(el);
 875
 876         /*
 877          * Move to the line requested
 878          */
 879         for (ptr = el->el_line.cursor; ptr < el->el_line.lastchar; ptr++)
 880                 if (*ptr == '\n' && --el->el_state.argument <= 0)
 881                         break;
 882
 883         if (el->el_state.argument > 0)
 884                 return (CC_ERROR);
 885
 886         /*
 887          * Move to the character requested
 888          */
 889         for (ptr++;
 890             nchars-- > 0 && ptr < el->el_line.lastchar && *ptr != '\n';
 891             ptr++)
 892                 continue;
 893
 894         el->el_line.cursor = ptr;
 895         return (CC_CURSOR);
 896 }
 897
 898
 899 /* ed_command():
 900  *      Editline extended command
 901  *      [M-X] [:]
 902  */
 903 protected el_action_t
 904 /*ARGSUSED*/
 905 ed_command(EditLine *el, int c __unused)
 906 {
 907         char tmpbuf[EL_BUFSIZ];
 908         int tmplen;
 909
 910         tmplen = c_gets(el, tmpbuf, "\n: ");
 911         term__putc('\n');
 912
 913         if (tmplen < 0 || (tmpbuf[tmplen] = 0, parse_line(el, tmpbuf)) == -1)
 914                 term_beep(el);
 915
 916         el->el_map.current = el->el_map.key;
 917         re_clear_display(el);
 918         return CC_REFRESH;
 919 }