| 1 | /* vi_mode.c -- A vi emulation mode for Bash. |
| 2 | Derived from code written by Jeff Sparkes (jsparkes@bnr.ca). */ |
| 3 | |
| 4 | /* Copyright (C) 1988, 1991 Free Software Foundation, Inc. |
| 5 | |
| 6 | This file is part of the GNU Readline Library (the Library), a set of |
| 7 | routines for providing Emacs style line input to programs that ask |
| 8 | for it. |
| 9 | |
| 10 | The Library is free software; you can redistribute it and/or modify |
| 11 | it under the terms of the GNU General Public License as published by |
| 12 | the Free Software Foundation; either version 1, or (at your option) |
| 13 | any later version. |
| 14 | |
| 15 | The Library is distributed in the hope that it will be useful, but |
| 16 | WITHOUT ANY WARRANTY; without even the implied warranty of |
| 17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 18 | General Public License for more details. |
| 19 | |
| 20 | The GNU General Public License is often shipped with GNU software, and |
| 21 | is generally kept in a file called COPYING or LICENSE. If you do not |
| 22 | have a copy of the license, write to the Free Software Foundation, |
| 23 | 675 Mass Ave, Cambridge, MA 02139, USA. */ |
| 24 | \f |
| 25 | /* **************************************************************** */ |
| 26 | /* */ |
| 27 | /* VI Emulation Mode */ |
| 28 | /* */ |
| 29 | /* **************************************************************** */ |
| 30 | #if defined (VI_MODE) |
| 31 | |
| 32 | #include <stdio.h> |
| 33 | |
| 34 | #if defined (__GNUC__) |
| 35 | # define alloca __builtin_alloca |
| 36 | #else |
| 37 | # if defined (sparc) || defined (HAVE_ALLOCA_H) |
| 38 | # include <alloca.h> |
| 39 | # endif |
| 40 | #endif |
| 41 | |
| 42 | /* Some standard library routines. */ |
| 43 | #include "readline.h" |
| 44 | #include "history.h" |
| 45 | |
| 46 | #ifndef digit |
| 47 | #define digit(c) ((c) >= '0' && (c) <= '9') |
| 48 | #endif |
| 49 | |
| 50 | #ifndef isletter |
| 51 | #define isletter(c) (((c) >= 'A' && (c) <= 'Z') || ((c) >= 'a' && (c) <= 'z')) |
| 52 | #endif |
| 53 | |
| 54 | #ifndef digit_value |
| 55 | #define digit_value(c) ((c) - '0') |
| 56 | #endif |
| 57 | |
| 58 | #ifndef member |
| 59 | #define member(c, s) ((c) ? index ((s), (c)) : 0) |
| 60 | #endif |
| 61 | |
| 62 | #ifndef isident |
| 63 | #define isident(c) ((isletter(c) || digit(c) || c == '_')) |
| 64 | #endif |
| 65 | |
| 66 | #ifndef exchange |
| 67 | #define exchange(x, y) {int temp = x; x = y; y = temp;} |
| 68 | #endif |
| 69 | |
| 70 | /* Variables imported from readline.c */ |
| 71 | extern int rl_point, rl_end, rl_mark, rl_done; |
| 72 | extern FILE *rl_instream; |
| 73 | extern int rl_line_buffer_len, rl_explicit_arg, rl_numeric_arg; |
| 74 | extern Keymap keymap; |
| 75 | extern char *rl_prompt; |
| 76 | extern char *rl_line_buffer; |
| 77 | extern int rl_arg_sign; |
| 78 | |
| 79 | extern char *xmalloc (), *xrealloc (); |
| 80 | extern void rl_extend_line_buffer (); |
| 81 | |
| 82 | /* Last string searched for from `/' or `?'. */ |
| 83 | static char *vi_last_search = (char *)NULL; |
| 84 | static int vi_histpos; |
| 85 | |
| 86 | /* Non-zero means enter insertion mode. */ |
| 87 | int vi_doing_insert = 0; |
| 88 | |
| 89 | /* String inserted into the line by rl_vi_comment (). */ |
| 90 | char *rl_vi_comment_begin = (char *)NULL; |
| 91 | |
| 92 | /* *** UNCLEAN *** */ |
| 93 | /* Command keys which do movement for xxx_to commands. */ |
| 94 | static char *vi_motion = " hl^$0ftFt;,%wbeWBE|"; |
| 95 | |
| 96 | /* Keymap used for vi replace characters. Created dynamically since |
| 97 | rarely used. */ |
| 98 | static Keymap vi_replace_map = (Keymap)NULL; |
| 99 | |
| 100 | /* The number of characters inserted in the last replace operation. */ |
| 101 | static int vi_replace_count = 0; |
| 102 | |
| 103 | /* Yank the nth arg from the previous line into this line at point. */ |
| 104 | rl_vi_yank_arg (count) |
| 105 | int count; |
| 106 | { |
| 107 | /* Readline thinks that the first word on a line is the 0th, while vi |
| 108 | thinks the first word on a line is the 1st. Compensate. */ |
| 109 | if (rl_explicit_arg) |
| 110 | rl_yank_nth_arg (count - 1, 0); |
| 111 | else |
| 112 | rl_yank_nth_arg ('$', 0); |
| 113 | } |
| 114 | |
| 115 | /* With an argument, move back that many history lines, else move to the |
| 116 | beginning of history. */ |
| 117 | rl_vi_fetch_history (count, c) |
| 118 | int count, c; |
| 119 | { |
| 120 | extern int rl_explicit_arg; |
| 121 | int current = where_history (); |
| 122 | |
| 123 | /* Giving an argument of n means we want the nth command in the history |
| 124 | file. The command number is interpreted the same way that the bash |
| 125 | `history' command does it -- that is, giving an argument count of 450 |
| 126 | to this command would get the command listed as number 450 in the |
| 127 | output of `history'. */ |
| 128 | if (rl_explicit_arg) |
| 129 | { |
| 130 | int wanted = history_base + current - count; |
| 131 | if (wanted <= 0) |
| 132 | rl_beginning_of_history (0, 0); |
| 133 | else |
| 134 | rl_get_previous_history (wanted); |
| 135 | } |
| 136 | else |
| 137 | rl_beginning_of_history (count, 0); |
| 138 | } |
| 139 | |
| 140 | /* Search again for the last thing searched for. */ |
| 141 | rl_vi_search_again (ignore, key) |
| 142 | int ignore, key; |
| 143 | { |
| 144 | switch (key) |
| 145 | { |
| 146 | case 'n': |
| 147 | rl_vi_dosearch (vi_last_search, -1); |
| 148 | break; |
| 149 | |
| 150 | case 'N': |
| 151 | rl_vi_dosearch (vi_last_search, 1); |
| 152 | break; |
| 153 | } |
| 154 | } |
| 155 | |
| 156 | /* Do a vi style search. */ |
| 157 | rl_vi_search (count, key) |
| 158 | int count, key; |
| 159 | { |
| 160 | int dir, c, save_pos; |
| 161 | char *p; |
| 162 | |
| 163 | switch (key) |
| 164 | { |
| 165 | case '?': |
| 166 | dir = 1; |
| 167 | break; |
| 168 | |
| 169 | case '/': |
| 170 | dir = -1; |
| 171 | break; |
| 172 | |
| 173 | default: |
| 174 | ding (); |
| 175 | return; |
| 176 | } |
| 177 | |
| 178 | vi_histpos = where_history (); |
| 179 | maybe_save_line (); |
| 180 | save_pos = rl_point; |
| 181 | |
| 182 | /* Reuse the line input buffer to read the search string. */ |
| 183 | rl_line_buffer[0] = 0; |
| 184 | rl_end = rl_point = 0; |
| 185 | p = (char *)alloca (2 + (rl_prompt ? strlen (rl_prompt) : 0)); |
| 186 | |
| 187 | sprintf (p, "%s%c", rl_prompt ? rl_prompt : "", key); |
| 188 | |
| 189 | rl_message (p, 0, 0); |
| 190 | |
| 191 | while (c = rl_read_key ()) |
| 192 | { |
| 193 | switch (c) |
| 194 | { |
| 195 | case CTRL('H'): |
| 196 | case RUBOUT: |
| 197 | if (rl_point == 0) |
| 198 | { |
| 199 | maybe_unsave_line (); |
| 200 | rl_clear_message (); |
| 201 | rl_point = save_pos; |
| 202 | return; |
| 203 | } |
| 204 | |
| 205 | case CTRL('W'): |
| 206 | case CTRL('U'): |
| 207 | rl_dispatch (c, keymap); |
| 208 | break; |
| 209 | |
| 210 | case ESC: |
| 211 | case RETURN: |
| 212 | case NEWLINE: |
| 213 | goto dosearch; |
| 214 | break; |
| 215 | |
| 216 | case CTRL('C'): |
| 217 | maybe_unsave_line (); |
| 218 | rl_clear_message (); |
| 219 | rl_point = 0; |
| 220 | ding (); |
| 221 | return; |
| 222 | |
| 223 | default: |
| 224 | rl_insert (1, c); |
| 225 | break; |
| 226 | } |
| 227 | rl_redisplay (); |
| 228 | } |
| 229 | dosearch: |
| 230 | if (vi_last_search) |
| 231 | free (vi_last_search); |
| 232 | |
| 233 | vi_last_search = savestring (rl_line_buffer); |
| 234 | rl_vi_dosearch (rl_line_buffer, dir); |
| 235 | } |
| 236 | |
| 237 | /* Search for STRING in the history list. DIR is < 0 for searching |
| 238 | backwards. POS is an absolute index into the history list at |
| 239 | which point to begin searching. If the first character of STRING |
| 240 | is `^', the string must match a prefix of a history line, otherwise |
| 241 | a full substring match is performed. */ |
| 242 | static int |
| 243 | vi_history_search_pos (string, dir, pos) |
| 244 | char *string; |
| 245 | int dir, pos; |
| 246 | { |
| 247 | int ret, old = where_history (); |
| 248 | |
| 249 | history_set_pos (pos); |
| 250 | |
| 251 | if (*string == '^') |
| 252 | ret = history_search_prefix (string + 1, dir); |
| 253 | else |
| 254 | ret = history_search (string, dir); |
| 255 | |
| 256 | if (ret == -1) |
| 257 | { |
| 258 | history_set_pos (old); |
| 259 | return (-1); |
| 260 | } |
| 261 | |
| 262 | ret = where_history (); |
| 263 | history_set_pos (old); |
| 264 | return ret; |
| 265 | } |
| 266 | |
| 267 | rl_vi_dosearch (string, dir) |
| 268 | char *string; |
| 269 | int dir; |
| 270 | { |
| 271 | int old, save = vi_histpos; |
| 272 | HIST_ENTRY *h; |
| 273 | |
| 274 | if (string == 0 || *string == 0 || vi_histpos < 0) |
| 275 | { |
| 276 | ding (); |
| 277 | return; |
| 278 | } |
| 279 | |
| 280 | if ((save = vi_history_search_pos (string, dir, vi_histpos + dir)) == -1) |
| 281 | { |
| 282 | maybe_unsave_line (); |
| 283 | rl_clear_message (); |
| 284 | rl_point = 0; |
| 285 | ding (); |
| 286 | return; |
| 287 | } |
| 288 | |
| 289 | vi_histpos = save; |
| 290 | |
| 291 | old = where_history (); |
| 292 | history_set_pos (vi_histpos); |
| 293 | h = current_history (); |
| 294 | history_set_pos (old); |
| 295 | |
| 296 | { |
| 297 | int line_len = strlen (h->line); |
| 298 | |
| 299 | if (line_len >= rl_line_buffer_len) |
| 300 | rl_extend_line_buffer (line_len); |
| 301 | strcpy (rl_line_buffer, h->line); |
| 302 | } |
| 303 | |
| 304 | rl_undo_list = (UNDO_LIST *)h->data; |
| 305 | rl_end = strlen (rl_line_buffer); |
| 306 | rl_point = 0; |
| 307 | rl_clear_message (); |
| 308 | } |
| 309 | |
| 310 | /* Completion, from vi's point of view. */ |
| 311 | rl_vi_complete (ignore, key) |
| 312 | int ignore, key; |
| 313 | { |
| 314 | if ((rl_point < rl_end) && (!whitespace (rl_line_buffer[rl_point]))) |
| 315 | { |
| 316 | if (!whitespace (rl_line_buffer[rl_point + 1])) |
| 317 | rl_vi_end_word (1, 'E'); |
| 318 | rl_point++; |
| 319 | } |
| 320 | |
| 321 | if (key == '*') |
| 322 | rl_complete_internal ('*'); /* Expansion and replacement. */ |
| 323 | else if (key == '=') |
| 324 | rl_complete_internal ('?'); /* List possible completions. */ |
| 325 | else if (key == '\\') |
| 326 | rl_complete_internal (TAB); /* Standard Readline completion. */ |
| 327 | else |
| 328 | rl_complete (0, key); |
| 329 | } |
| 330 | |
| 331 | /* Previous word in vi mode. */ |
| 332 | rl_vi_prev_word (count, key) |
| 333 | int count, key; |
| 334 | { |
| 335 | if (count < 0) |
| 336 | { |
| 337 | rl_vi_next_word (-count, key); |
| 338 | return; |
| 339 | } |
| 340 | |
| 341 | if (rl_point == 0) |
| 342 | { |
| 343 | ding (); |
| 344 | return; |
| 345 | } |
| 346 | |
| 347 | if (uppercase_p (key)) |
| 348 | rl_vi_bWord (count); |
| 349 | else |
| 350 | rl_vi_bword (count); |
| 351 | } |
| 352 | |
| 353 | /* Next word in vi mode. */ |
| 354 | rl_vi_next_word (count, key) |
| 355 | int count; |
| 356 | { |
| 357 | if (count < 0) |
| 358 | { |
| 359 | rl_vi_prev_word (-count, key); |
| 360 | return; |
| 361 | } |
| 362 | |
| 363 | if (rl_point >= (rl_end - 1)) |
| 364 | { |
| 365 | ding (); |
| 366 | return; |
| 367 | } |
| 368 | |
| 369 | if (uppercase_p (key)) |
| 370 | rl_vi_fWord (count); |
| 371 | else |
| 372 | rl_vi_fword (count); |
| 373 | } |
| 374 | |
| 375 | /* Move to the end of the ?next? word. */ |
| 376 | rl_vi_end_word (count, key) |
| 377 | int count, key; |
| 378 | { |
| 379 | if (count < 0) |
| 380 | { |
| 381 | ding (); |
| 382 | return; |
| 383 | } |
| 384 | |
| 385 | if (uppercase_p (key)) |
| 386 | rl_vi_eWord (count); |
| 387 | else |
| 388 | rl_vi_eword (count); |
| 389 | } |
| 390 | |
| 391 | /* Move forward a word the way that 'W' does. */ |
| 392 | rl_vi_fWord (count) |
| 393 | int count; |
| 394 | { |
| 395 | while (count-- && rl_point < (rl_end - 1)) |
| 396 | { |
| 397 | /* Skip until whitespace. */ |
| 398 | while (!whitespace (rl_line_buffer[rl_point]) && rl_point < rl_end) |
| 399 | rl_point++; |
| 400 | |
| 401 | /* Now skip whitespace. */ |
| 402 | while (whitespace (rl_line_buffer[rl_point]) && rl_point < rl_end) |
| 403 | rl_point++; |
| 404 | } |
| 405 | } |
| 406 | |
| 407 | rl_vi_bWord (count) |
| 408 | int count; |
| 409 | { |
| 410 | while (count-- && rl_point > 0) |
| 411 | { |
| 412 | /* If we are at the start of a word, move back to whitespace so |
| 413 | we will go back to the start of the previous word. */ |
| 414 | if (!whitespace (rl_line_buffer[rl_point]) && |
| 415 | whitespace (rl_line_buffer[rl_point - 1])) |
| 416 | rl_point--; |
| 417 | |
| 418 | while (rl_point > 0 && whitespace (rl_line_buffer[rl_point])) |
| 419 | rl_point--; |
| 420 | |
| 421 | if (rl_point > 0) |
| 422 | { |
| 423 | while (--rl_point >= 0 && !whitespace (rl_line_buffer[rl_point])); |
| 424 | rl_point++; |
| 425 | } |
| 426 | } |
| 427 | } |
| 428 | |
| 429 | rl_vi_eWord (count) |
| 430 | int count; |
| 431 | { |
| 432 | while (count-- && rl_point < (rl_end - 1)) |
| 433 | { |
| 434 | if (!whitespace (rl_line_buffer[rl_point])) |
| 435 | rl_point++; |
| 436 | |
| 437 | /* Move to the next non-whitespace character (to the start of the |
| 438 | next word). */ |
| 439 | while (++rl_point < rl_end && whitespace (rl_line_buffer[rl_point])); |
| 440 | |
| 441 | if (rl_point && rl_point < rl_end) |
| 442 | { |
| 443 | /* Skip whitespace. */ |
| 444 | while (rl_point < rl_end && whitespace (rl_line_buffer[rl_point])) |
| 445 | rl_point++; |
| 446 | |
| 447 | /* Skip until whitespace. */ |
| 448 | while (rl_point < rl_end && !whitespace (rl_line_buffer[rl_point])) |
| 449 | rl_point++; |
| 450 | |
| 451 | /* Move back to the last character of the word. */ |
| 452 | rl_point--; |
| 453 | } |
| 454 | } |
| 455 | } |
| 456 | |
| 457 | rl_vi_fword (count) |
| 458 | int count; |
| 459 | { |
| 460 | while (count-- && rl_point < (rl_end - 1)) |
| 461 | { |
| 462 | /* Move to white space (really non-identifer). */ |
| 463 | if (isident (rl_line_buffer[rl_point])) |
| 464 | { |
| 465 | while (isident (rl_line_buffer[rl_point]) && rl_point < rl_end) |
| 466 | rl_point++; |
| 467 | } |
| 468 | else /* if (!whitespace (rl_line_buffer[rl_point])) */ |
| 469 | { |
| 470 | while (!isident (rl_line_buffer[rl_point]) && |
| 471 | !whitespace (rl_line_buffer[rl_point]) && rl_point < rl_end) |
| 472 | rl_point++; |
| 473 | } |
| 474 | |
| 475 | /* Move past whitespace. */ |
| 476 | while (whitespace (rl_line_buffer[rl_point]) && rl_point < rl_end) |
| 477 | rl_point++; |
| 478 | } |
| 479 | } |
| 480 | |
| 481 | rl_vi_bword (count) |
| 482 | int count; |
| 483 | { |
| 484 | while (count-- && rl_point > 0) |
| 485 | { |
| 486 | int last_is_ident; |
| 487 | |
| 488 | /* If we are at the start of a word, move back to whitespace |
| 489 | so we will go back to the start of the previous word. */ |
| 490 | if (!whitespace (rl_line_buffer[rl_point]) && |
| 491 | whitespace (rl_line_buffer[rl_point - 1])) |
| 492 | rl_point--; |
| 493 | |
| 494 | /* If this character and the previous character are `opposite', move |
| 495 | back so we don't get messed up by the rl_point++ down there in |
| 496 | the while loop. Without this code, words like `l;' screw up the |
| 497 | function. */ |
| 498 | last_is_ident = isident (rl_line_buffer[rl_point - 1]); |
| 499 | if ((isident (rl_line_buffer[rl_point]) && !last_is_ident) || |
| 500 | (!isident (rl_line_buffer[rl_point]) && last_is_ident)) |
| 501 | rl_point--; |
| 502 | |
| 503 | while (rl_point > 0 && whitespace (rl_line_buffer[rl_point])) |
| 504 | rl_point--; |
| 505 | |
| 506 | if (rl_point > 0) |
| 507 | { |
| 508 | if (isident (rl_line_buffer[rl_point])) |
| 509 | while (--rl_point >= 0 && isident (rl_line_buffer[rl_point])); |
| 510 | else |
| 511 | while (--rl_point >= 0 && !isident (rl_line_buffer[rl_point]) && |
| 512 | !whitespace (rl_line_buffer[rl_point])); |
| 513 | rl_point++; |
| 514 | } |
| 515 | } |
| 516 | } |
| 517 | |
| 518 | rl_vi_eword (count) |
| 519 | int count; |
| 520 | { |
| 521 | while (count-- && rl_point < rl_end - 1) |
| 522 | { |
| 523 | if (!whitespace (rl_line_buffer[rl_point])) |
| 524 | rl_point++; |
| 525 | |
| 526 | while (rl_point < rl_end && whitespace (rl_line_buffer[rl_point])) |
| 527 | rl_point++; |
| 528 | |
| 529 | if (rl_point < rl_end) |
| 530 | { |
| 531 | if (isident (rl_line_buffer[rl_point])) |
| 532 | while (++rl_point < rl_end && isident (rl_line_buffer[rl_point])); |
| 533 | else |
| 534 | while (++rl_point < rl_end && !isident (rl_line_buffer[rl_point]) |
| 535 | && !whitespace (rl_line_buffer[rl_point])); |
| 536 | } |
| 537 | rl_point--; |
| 538 | } |
| 539 | } |
| 540 | |
| 541 | rl_vi_insert_beg () |
| 542 | { |
| 543 | rl_beg_of_line (); |
| 544 | rl_vi_insertion_mode (); |
| 545 | return 0; |
| 546 | } |
| 547 | |
| 548 | rl_vi_append_mode () |
| 549 | { |
| 550 | if (rl_point < rl_end) |
| 551 | rl_point += 1; |
| 552 | rl_vi_insertion_mode (); |
| 553 | return 0; |
| 554 | } |
| 555 | |
| 556 | rl_vi_append_eol () |
| 557 | { |
| 558 | rl_end_of_line (); |
| 559 | rl_vi_append_mode (); |
| 560 | return 0; |
| 561 | } |
| 562 | |
| 563 | /* What to do in the case of C-d. */ |
| 564 | rl_vi_eof_maybe (count, c) |
| 565 | int count, c; |
| 566 | { |
| 567 | rl_newline (1, '\n'); |
| 568 | } |
| 569 | |
| 570 | /* Insertion mode stuff. */ |
| 571 | |
| 572 | /* Switching from one mode to the other really just involves |
| 573 | switching keymaps. */ |
| 574 | rl_vi_insertion_mode () |
| 575 | { |
| 576 | keymap = vi_insertion_keymap; |
| 577 | } |
| 578 | |
| 579 | rl_vi_movement_mode () |
| 580 | { |
| 581 | if (rl_point > 0) |
| 582 | rl_backward (1); |
| 583 | |
| 584 | keymap = vi_movement_keymap; |
| 585 | vi_done_inserting (); |
| 586 | } |
| 587 | |
| 588 | vi_done_inserting () |
| 589 | { |
| 590 | if (vi_doing_insert) |
| 591 | { |
| 592 | rl_end_undo_group (); |
| 593 | vi_doing_insert = 0; |
| 594 | } |
| 595 | } |
| 596 | |
| 597 | rl_vi_arg_digit (count, c) |
| 598 | int count, c; |
| 599 | { |
| 600 | if (c == '0' && rl_numeric_arg == 1 && !rl_explicit_arg) |
| 601 | rl_beg_of_line (); |
| 602 | else |
| 603 | rl_digit_argument (count, c); |
| 604 | } |
| 605 | |
| 606 | rl_vi_change_case (count, ignore) |
| 607 | int count, ignore; |
| 608 | { |
| 609 | char c = 0; |
| 610 | |
| 611 | /* Don't try this on an empty line. */ |
| 612 | if (rl_point >= rl_end) |
| 613 | return; |
| 614 | |
| 615 | while (count-- && rl_point < rl_end) |
| 616 | { |
| 617 | if (uppercase_p (rl_line_buffer[rl_point])) |
| 618 | c = to_lower (rl_line_buffer[rl_point]); |
| 619 | else if (lowercase_p (rl_line_buffer[rl_point])) |
| 620 | c = to_upper (rl_line_buffer[rl_point]); |
| 621 | |
| 622 | /* Vi is kind of strange here. */ |
| 623 | if (c) |
| 624 | { |
| 625 | rl_begin_undo_group (); |
| 626 | rl_delete (1, c); |
| 627 | rl_insert (1, c); |
| 628 | rl_end_undo_group (); |
| 629 | rl_vi_check (); |
| 630 | } |
| 631 | else |
| 632 | rl_forward (1); |
| 633 | } |
| 634 | } |
| 635 | |
| 636 | rl_vi_put (count, key) |
| 637 | int count, key; |
| 638 | { |
| 639 | if (!uppercase_p (key) && (rl_point + 1 <= rl_end)) |
| 640 | rl_point++; |
| 641 | |
| 642 | rl_yank (); |
| 643 | rl_backward (1); |
| 644 | } |
| 645 | |
| 646 | rl_vi_check () |
| 647 | { |
| 648 | if (rl_point && rl_point == rl_end) |
| 649 | rl_point--; |
| 650 | } |
| 651 | |
| 652 | rl_vi_column (count) |
| 653 | { |
| 654 | if (count > rl_end) |
| 655 | rl_end_of_line (); |
| 656 | else |
| 657 | rl_point = count - 1; |
| 658 | } |
| 659 | |
| 660 | int |
| 661 | rl_vi_domove (key, nextkey) |
| 662 | int key, *nextkey; |
| 663 | { |
| 664 | int c, save; |
| 665 | int old_end, added_blank; |
| 666 | |
| 667 | added_blank = 0; |
| 668 | |
| 669 | rl_mark = rl_point; |
| 670 | c = rl_read_key (); |
| 671 | *nextkey = c; |
| 672 | |
| 673 | if (!member (c, vi_motion)) |
| 674 | { |
| 675 | if (digit (c)) |
| 676 | { |
| 677 | save = rl_numeric_arg; |
| 678 | rl_numeric_arg = digit_value (c); |
| 679 | rl_digit_loop1 (); |
| 680 | rl_numeric_arg *= save; |
| 681 | c = rl_read_key (); /* real command */ |
| 682 | *nextkey = c; |
| 683 | } |
| 684 | else if ((key == 'd' && c == 'd') || |
| 685 | (key == 'y' && c == 'y') || |
| 686 | (key == 'c' && c == 'c')) |
| 687 | { |
| 688 | rl_mark = rl_end; |
| 689 | rl_beg_of_line (); |
| 690 | return (0); |
| 691 | } |
| 692 | else |
| 693 | return (-1); |
| 694 | } |
| 695 | |
| 696 | /* Append a blank character temporarily so that the motion routines |
| 697 | work right at the end of the line. */ |
| 698 | old_end = rl_end; |
| 699 | rl_line_buffer[rl_end++] = ' '; /* This looks pretty bogus to me??? */ |
| 700 | rl_line_buffer[rl_end] = '\0'; |
| 701 | added_blank++; |
| 702 | |
| 703 | rl_dispatch (c, keymap); |
| 704 | |
| 705 | /* Remove the blank that we added. */ |
| 706 | rl_end = old_end; |
| 707 | rl_line_buffer[rl_end] = '\0'; |
| 708 | if (rl_point > rl_end) |
| 709 | rl_point = rl_end - 1; |
| 710 | |
| 711 | /* No change in position means the command failed. */ |
| 712 | if (rl_mark == rl_point) |
| 713 | return (-1); |
| 714 | |
| 715 | /* rl_vi_f[wW]ord () leaves the cursor on the first character of the next |
| 716 | word. If we are not at the end of the line, and we are on a |
| 717 | non-whitespace character, move back one (presumably to whitespace). */ |
| 718 | if ((c == 'w' || c == 'W') && (rl_point < rl_end) && |
| 719 | !whitespace (rl_line_buffer[rl_point])) |
| 720 | rl_point--; |
| 721 | |
| 722 | /* If cw or cW, back up to the end of a word, so the behaviour of ce |
| 723 | or cE is the actual result. Brute-force, no subtlety. Do the same |
| 724 | thing for dw or dW. */ |
| 725 | if (key == 'c' && (to_upper (c) == 'W')) |
| 726 | { |
| 727 | while (rl_point && whitespace (rl_line_buffer[rl_point])) |
| 728 | rl_point--; |
| 729 | } |
| 730 | |
| 731 | if (rl_mark < rl_point) |
| 732 | exchange (rl_point, rl_mark); |
| 733 | |
| 734 | return (0); |
| 735 | } |
| 736 | |
| 737 | /* A simplified loop for vi. Don't dispatch key at end. |
| 738 | Don't recognize minus sign? */ |
| 739 | rl_digit_loop1 () |
| 740 | { |
| 741 | int key, c; |
| 742 | |
| 743 | while (1) |
| 744 | { |
| 745 | rl_message ("(arg: %d) ", rl_arg_sign * rl_numeric_arg, 0); |
| 746 | key = c = rl_read_key (); |
| 747 | |
| 748 | if (keymap[c].type == ISFUNC && |
| 749 | keymap[c].function == rl_universal_argument) |
| 750 | { |
| 751 | rl_numeric_arg *= 4; |
| 752 | continue; |
| 753 | } |
| 754 | |
| 755 | c = UNMETA (c); |
| 756 | if (numeric (c)) |
| 757 | { |
| 758 | if (rl_explicit_arg) |
| 759 | rl_numeric_arg = (rl_numeric_arg * 10) + digit_value (c); |
| 760 | else |
| 761 | rl_numeric_arg = digit_value (c); |
| 762 | rl_explicit_arg = 1; |
| 763 | } |
| 764 | else |
| 765 | { |
| 766 | rl_clear_message (); |
| 767 | rl_stuff_char (key); |
| 768 | break; |
| 769 | } |
| 770 | } |
| 771 | } |
| 772 | |
| 773 | rl_vi_delete_to (count, key) |
| 774 | int count, key; |
| 775 | { |
| 776 | int c; |
| 777 | |
| 778 | if (uppercase_p (key)) |
| 779 | rl_stuff_char ('$'); |
| 780 | |
| 781 | if (rl_vi_domove (key, &c)) |
| 782 | { |
| 783 | ding (); |
| 784 | return; |
| 785 | } |
| 786 | |
| 787 | if ((c != 'l') && (c != '|') && (c != 'h') && rl_mark < rl_end) |
| 788 | rl_mark++; |
| 789 | |
| 790 | rl_kill_text (rl_point, rl_mark); |
| 791 | } |
| 792 | |
| 793 | rl_vi_change_to (count, key) |
| 794 | int count, key; |
| 795 | { |
| 796 | int c; |
| 797 | |
| 798 | if (uppercase_p (key)) |
| 799 | rl_stuff_char ('$'); |
| 800 | |
| 801 | if (rl_vi_domove (key, &c)) |
| 802 | { |
| 803 | ding (); |
| 804 | return; |
| 805 | } |
| 806 | |
| 807 | if ((c != 'l') && (c != '|') && (c != 'h') && rl_mark < rl_end) |
| 808 | rl_mark++; |
| 809 | |
| 810 | rl_begin_undo_group (); |
| 811 | vi_doing_insert = 1; |
| 812 | rl_kill_text (rl_point, rl_mark); |
| 813 | rl_vi_insertion_mode (); |
| 814 | } |
| 815 | |
| 816 | rl_vi_yank_to (count, key) |
| 817 | int count, key; |
| 818 | { |
| 819 | int c, save = rl_point; |
| 820 | |
| 821 | if (uppercase_p (key)) |
| 822 | rl_stuff_char ('$'); |
| 823 | |
| 824 | if (rl_vi_domove (key, &c)) |
| 825 | { |
| 826 | ding (); |
| 827 | return; |
| 828 | } |
| 829 | |
| 830 | if ((c != 'l') && (c != '|') && (c != 'h') && rl_mark < rl_end) |
| 831 | rl_mark++; |
| 832 | |
| 833 | rl_begin_undo_group (); |
| 834 | rl_kill_text (rl_point, rl_mark); |
| 835 | rl_end_undo_group (); |
| 836 | rl_do_undo (); |
| 837 | rl_point = save; |
| 838 | } |
| 839 | |
| 840 | rl_vi_delete (count) |
| 841 | { |
| 842 | int end; |
| 843 | |
| 844 | if (rl_end == 0) |
| 845 | { |
| 846 | ding (); |
| 847 | return; |
| 848 | } |
| 849 | |
| 850 | end = rl_point + count; |
| 851 | |
| 852 | if (end >= rl_end) |
| 853 | end = rl_end; |
| 854 | |
| 855 | rl_kill_text (rl_point, end); |
| 856 | |
| 857 | if (rl_point > 0 && rl_point == rl_end) |
| 858 | rl_backward (1); |
| 859 | } |
| 860 | |
| 861 | /* Turn the current line into a comment in shell history. |
| 862 | A K*rn shell style function. */ |
| 863 | rl_vi_comment () |
| 864 | { |
| 865 | rl_beg_of_line (); |
| 866 | |
| 867 | if (rl_vi_comment_begin != (char *)NULL) |
| 868 | rl_insert_text (rl_vi_comment_begin); |
| 869 | else |
| 870 | rl_insert_text (": "); /* Default. */ |
| 871 | |
| 872 | rl_redisplay (); |
| 873 | rl_newline (1, '\010'); |
| 874 | } |
| 875 | |
| 876 | rl_vi_first_print () |
| 877 | { |
| 878 | rl_back_to_indent (); |
| 879 | } |
| 880 | |
| 881 | rl_back_to_indent (ignore1, ignore2) |
| 882 | int ignore1, ignore2; |
| 883 | { |
| 884 | rl_beg_of_line (); |
| 885 | while (rl_point < rl_end && whitespace (rl_line_buffer[rl_point])) |
| 886 | rl_point++; |
| 887 | } |
| 888 | |
| 889 | /* NOTE: it is necessary that opposite directions are inverses */ |
| 890 | #define FTO 1 /* forward to */ |
| 891 | #define BTO -1 /* backward to */ |
| 892 | #define FFIND 2 /* forward find */ |
| 893 | #define BFIND -2 /* backward find */ |
| 894 | |
| 895 | rl_vi_char_search (count, key) |
| 896 | int count, key; |
| 897 | { |
| 898 | static char target; |
| 899 | static int orig_dir, dir; |
| 900 | int pos; |
| 901 | |
| 902 | if (key == ';' || key == ',') |
| 903 | dir = (key == ';' ? orig_dir : -orig_dir); |
| 904 | else |
| 905 | { |
| 906 | target = rl_getc (rl_instream); |
| 907 | |
| 908 | switch (key) |
| 909 | { |
| 910 | case 't': |
| 911 | orig_dir = dir = FTO; |
| 912 | break; |
| 913 | |
| 914 | case 'T': |
| 915 | orig_dir = dir = BTO; |
| 916 | break; |
| 917 | |
| 918 | case 'f': |
| 919 | orig_dir = dir = FFIND; |
| 920 | break; |
| 921 | |
| 922 | case 'F': |
| 923 | orig_dir = dir = BFIND; |
| 924 | break; |
| 925 | } |
| 926 | } |
| 927 | |
| 928 | pos = rl_point; |
| 929 | |
| 930 | while (count--) |
| 931 | { |
| 932 | if (dir < 0) |
| 933 | { |
| 934 | if (pos == 0) |
| 935 | { |
| 936 | ding (); |
| 937 | return; |
| 938 | } |
| 939 | |
| 940 | pos--; |
| 941 | do |
| 942 | { |
| 943 | if (rl_line_buffer[pos] == target) |
| 944 | { |
| 945 | if (dir == BTO) |
| 946 | rl_point = pos + 1; |
| 947 | else |
| 948 | rl_point = pos; |
| 949 | break; |
| 950 | } |
| 951 | } |
| 952 | while (pos--); |
| 953 | |
| 954 | if (pos < 0) |
| 955 | { |
| 956 | ding (); |
| 957 | return; |
| 958 | } |
| 959 | } |
| 960 | else |
| 961 | { /* dir > 0 */ |
| 962 | if (pos >= rl_end) |
| 963 | { |
| 964 | ding (); |
| 965 | return; |
| 966 | } |
| 967 | |
| 968 | pos++; |
| 969 | do |
| 970 | { |
| 971 | if (rl_line_buffer[pos] == target) |
| 972 | { |
| 973 | if (dir == FTO) |
| 974 | rl_point = pos - 1; |
| 975 | else |
| 976 | rl_point = pos; |
| 977 | break; |
| 978 | } |
| 979 | } |
| 980 | while (++pos < rl_end); |
| 981 | |
| 982 | if (pos >= (rl_end - 1)) |
| 983 | { |
| 984 | ding (); |
| 985 | return; |
| 986 | } |
| 987 | } |
| 988 | } |
| 989 | } |
| 990 | |
| 991 | /* Match brackets */ |
| 992 | rl_vi_match () |
| 993 | { |
| 994 | int count = 1, brack, pos; |
| 995 | |
| 996 | pos = rl_point; |
| 997 | if ((brack = rl_vi_bracktype (rl_line_buffer[rl_point])) == 0) |
| 998 | { |
| 999 | while ((brack = rl_vi_bracktype (rl_line_buffer[rl_point])) == 0 && |
| 1000 | rl_point < rl_end - 1) |
| 1001 | rl_forward (1); |
| 1002 | |
| 1003 | if (brack <= 0) |
| 1004 | { |
| 1005 | rl_point = pos; |
| 1006 | ding (); |
| 1007 | return; |
| 1008 | } |
| 1009 | } |
| 1010 | |
| 1011 | pos = rl_point; |
| 1012 | |
| 1013 | if (brack < 0) |
| 1014 | { |
| 1015 | while (count) |
| 1016 | { |
| 1017 | if (--pos >= 0) |
| 1018 | { |
| 1019 | int b = rl_vi_bracktype (rl_line_buffer[pos]); |
| 1020 | if (b == -brack) |
| 1021 | count--; |
| 1022 | else if (b == brack) |
| 1023 | count++; |
| 1024 | } |
| 1025 | else |
| 1026 | { |
| 1027 | ding (); |
| 1028 | return; |
| 1029 | } |
| 1030 | } |
| 1031 | } |
| 1032 | else |
| 1033 | { /* brack > 0 */ |
| 1034 | while (count) |
| 1035 | { |
| 1036 | if (++pos < rl_end) |
| 1037 | { |
| 1038 | int b = rl_vi_bracktype (rl_line_buffer[pos]); |
| 1039 | if (b == -brack) |
| 1040 | count--; |
| 1041 | else if (b == brack) |
| 1042 | count++; |
| 1043 | } |
| 1044 | else |
| 1045 | { |
| 1046 | ding (); |
| 1047 | return; |
| 1048 | } |
| 1049 | } |
| 1050 | } |
| 1051 | rl_point = pos; |
| 1052 | } |
| 1053 | |
| 1054 | int |
| 1055 | rl_vi_bracktype (c) |
| 1056 | int c; |
| 1057 | { |
| 1058 | switch (c) |
| 1059 | { |
| 1060 | case '(': return 1; |
| 1061 | case ')': return -1; |
| 1062 | case '[': return 2; |
| 1063 | case ']': return -2; |
| 1064 | case '{': return 3; |
| 1065 | case '}': return -3; |
| 1066 | default: return 0; |
| 1067 | } |
| 1068 | } |
| 1069 | |
| 1070 | rl_vi_change_char (count, key) |
| 1071 | int count, key; |
| 1072 | { |
| 1073 | int c; |
| 1074 | |
| 1075 | c = rl_getc (rl_instream); |
| 1076 | |
| 1077 | if (c == '\033' || c == CTRL ('C')) |
| 1078 | return; |
| 1079 | |
| 1080 | while (count-- && rl_point < rl_end) |
| 1081 | { |
| 1082 | rl_begin_undo_group (); |
| 1083 | |
| 1084 | rl_delete (1, c); |
| 1085 | rl_insert (1, c); |
| 1086 | if (count == 0) |
| 1087 | rl_backward (1); |
| 1088 | |
| 1089 | rl_end_undo_group (); |
| 1090 | } |
| 1091 | } |
| 1092 | |
| 1093 | rl_vi_subst (count, key) |
| 1094 | int count, key; |
| 1095 | { |
| 1096 | rl_begin_undo_group (); |
| 1097 | vi_doing_insert = 1; |
| 1098 | |
| 1099 | if (uppercase_p (key)) |
| 1100 | { |
| 1101 | rl_beg_of_line (); |
| 1102 | rl_kill_line (1); |
| 1103 | } |
| 1104 | else |
| 1105 | rl_delete (count, key); |
| 1106 | |
| 1107 | rl_vi_insertion_mode (); |
| 1108 | } |
| 1109 | |
| 1110 | rl_vi_overstrike (count, key) |
| 1111 | int count, key; |
| 1112 | { |
| 1113 | int i; |
| 1114 | |
| 1115 | if (vi_doing_insert == 0) |
| 1116 | { |
| 1117 | vi_doing_insert = 1; |
| 1118 | rl_begin_undo_group (); |
| 1119 | } |
| 1120 | |
| 1121 | for (i = 0; i < count; i++) |
| 1122 | { |
| 1123 | vi_replace_count++; |
| 1124 | rl_begin_undo_group (); |
| 1125 | |
| 1126 | if (rl_point < rl_end) |
| 1127 | { |
| 1128 | rl_delete (1, key); |
| 1129 | rl_insert (1, key); |
| 1130 | } |
| 1131 | else |
| 1132 | rl_insert (1, key); |
| 1133 | |
| 1134 | rl_end_undo_group (); |
| 1135 | } |
| 1136 | } |
| 1137 | |
| 1138 | rl_vi_overstrike_delete (count) |
| 1139 | int count; |
| 1140 | { |
| 1141 | int i, s; |
| 1142 | |
| 1143 | for (i = 0; i < count; i++) |
| 1144 | { |
| 1145 | if (vi_replace_count == 0) |
| 1146 | { |
| 1147 | ding (); |
| 1148 | break; |
| 1149 | } |
| 1150 | s = rl_point; |
| 1151 | |
| 1152 | if (rl_do_undo ()) |
| 1153 | vi_replace_count--; |
| 1154 | |
| 1155 | if (rl_point == s) |
| 1156 | rl_backward (1); |
| 1157 | } |
| 1158 | |
| 1159 | if (vi_replace_count == 0 && vi_doing_insert) |
| 1160 | { |
| 1161 | rl_end_undo_group (); |
| 1162 | rl_do_undo (); |
| 1163 | vi_doing_insert = 0; |
| 1164 | } |
| 1165 | } |
| 1166 | |
| 1167 | rl_vi_replace (count, key) |
| 1168 | int count, key; |
| 1169 | { |
| 1170 | int i; |
| 1171 | |
| 1172 | vi_replace_count = 0; |
| 1173 | |
| 1174 | if (!vi_replace_map) |
| 1175 | { |
| 1176 | vi_replace_map = rl_make_bare_keymap (); |
| 1177 | |
| 1178 | for (i = ' '; i < 127; i++) |
| 1179 | vi_replace_map[i].function = rl_vi_overstrike; |
| 1180 | |
| 1181 | vi_replace_map[RUBOUT].function = rl_vi_overstrike_delete; |
| 1182 | vi_replace_map[ESC].function = rl_vi_movement_mode; |
| 1183 | vi_replace_map[RETURN].function = rl_newline; |
| 1184 | vi_replace_map[NEWLINE].function = rl_newline; |
| 1185 | |
| 1186 | /* If the normal vi insertion keymap has ^H bound to erase, do the |
| 1187 | same here. Probably should remove the assignment to RUBOUT up |
| 1188 | there, but I don't think it will make a difference in real life. */ |
| 1189 | if (vi_insertion_keymap[CTRL ('H')].type == ISFUNC && |
| 1190 | vi_insertion_keymap[CTRL ('H')].function == rl_rubout) |
| 1191 | vi_replace_map[CTRL ('H')].function = rl_vi_overstrike_delete; |
| 1192 | |
| 1193 | } |
| 1194 | keymap = vi_replace_map; |
| 1195 | } |
| 1196 | |
| 1197 | /* |
| 1198 | * Try to complete the word we are standing on or the word that ends with |
| 1199 | * the previous character. A space matches everything. |
| 1200 | * Word delimiters are space and ;. |
| 1201 | */ |
| 1202 | rl_vi_possible_completions() |
| 1203 | { |
| 1204 | int save_pos = rl_point; |
| 1205 | |
| 1206 | if (!index (" ;", rl_line_buffer[rl_point])) |
| 1207 | { |
| 1208 | while (!index(" ;", rl_line_buffer[++rl_point])) |
| 1209 | ; |
| 1210 | } |
| 1211 | else if (rl_line_buffer[rl_point-1] == ';') |
| 1212 | { |
| 1213 | ding (); |
| 1214 | return (0); |
| 1215 | } |
| 1216 | |
| 1217 | rl_possible_completions (); |
| 1218 | rl_point = save_pos; |
| 1219 | |
| 1220 | return (0); |
| 1221 | } |
| 1222 | |
| 1223 | #endif /* VI_MODE */ |