| 1 | /* text.c -- text handling commands for readline. */ |
| 2 | |
| 3 | /* Copyright (C) 1987-2005 Free Software Foundation, Inc. |
| 4 | |
| 5 | This file is part of the GNU Readline Library, a library for |
| 6 | reading lines of text with interactive input and history editing. |
| 7 | |
| 8 | The GNU Readline Library is free software; you can redistribute it |
| 9 | and/or modify it under the terms of the GNU General Public License |
| 10 | as published by the Free Software Foundation; either version 2, or |
| 11 | (at your option) any later version. |
| 12 | |
| 13 | The GNU Readline Library is distributed in the hope that it will be |
| 14 | useful, but WITHOUT ANY WARRANTY; without even the implied warranty |
| 15 | of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | GNU General Public License for more details. |
| 17 | |
| 18 | The GNU General Public License is often shipped with GNU software, and |
| 19 | is generally kept in a file called COPYING or LICENSE. If you do not |
| 20 | have a copy of the license, write to the Free Software Foundation, |
| 21 | 59 Temple Place, Suite 330, Boston, MA 02111 USA. */ |
| 22 | #define READLINE_LIBRARY |
| 23 | |
| 24 | #if defined (HAVE_CONFIG_H) |
| 25 | # include <config.h> |
| 26 | #endif |
| 27 | |
| 28 | #if defined (HAVE_UNISTD_H) |
| 29 | # include <unistd.h> |
| 30 | #endif /* HAVE_UNISTD_H */ |
| 31 | |
| 32 | #if defined (HAVE_STDLIB_H) |
| 33 | # include <stdlib.h> |
| 34 | #else |
| 35 | # include "ansi_stdlib.h" |
| 36 | #endif /* HAVE_STDLIB_H */ |
| 37 | |
| 38 | #if defined (HAVE_LOCALE_H) |
| 39 | # include <locale.h> |
| 40 | #endif |
| 41 | |
| 42 | #include <stdio.h> |
| 43 | |
| 44 | /* System-specific feature definitions and include files. */ |
| 45 | #include "rldefs.h" |
| 46 | #include "rlmbutil.h" |
| 47 | |
| 48 | #if defined (__EMX__) |
| 49 | # define INCL_DOSPROCESS |
| 50 | # include <os2.h> |
| 51 | #endif /* __EMX__ */ |
| 52 | |
| 53 | /* Some standard library routines. */ |
| 54 | #include "readline.h" |
| 55 | #include "history.h" |
| 56 | |
| 57 | #include "rlprivate.h" |
| 58 | #include "rlshell.h" |
| 59 | #include "xmalloc.h" |
| 60 | |
| 61 | /* Forward declarations. */ |
| 62 | static int rl_change_case PARAMS((int, int)); |
| 63 | static int _rl_char_search PARAMS((int, int, int)); |
| 64 | |
| 65 | #if defined (READLINE_CALLBACKS) |
| 66 | static int _rl_insert_next_callback PARAMS((_rl_callback_generic_arg *)); |
| 67 | static int _rl_char_search_callback PARAMS((_rl_callback_generic_arg *)); |
| 68 | #endif |
| 69 | |
| 70 | /* **************************************************************** */ |
| 71 | /* */ |
| 72 | /* Insert and Delete */ |
| 73 | /* */ |
| 74 | /* **************************************************************** */ |
| 75 | |
| 76 | /* Insert a string of text into the line at point. This is the only |
| 77 | way that you should do insertion. _rl_insert_char () calls this |
| 78 | function. Returns the number of characters inserted. */ |
| 79 | int |
| 80 | rl_insert_text (string) |
| 81 | const char *string; |
| 82 | { |
| 83 | register int i, l; |
| 84 | |
| 85 | l = (string && *string) ? strlen (string) : 0; |
| 86 | if (l == 0) |
| 87 | return 0; |
| 88 | |
| 89 | if (rl_end + l >= rl_line_buffer_len) |
| 90 | rl_extend_line_buffer (rl_end + l); |
| 91 | |
| 92 | for (i = rl_end; i >= rl_point; i--) |
| 93 | rl_line_buffer[i + l] = rl_line_buffer[i]; |
| 94 | strncpy (rl_line_buffer + rl_point, string, l); |
| 95 | |
| 96 | /* Remember how to undo this if we aren't undoing something. */ |
| 97 | if (_rl_doing_an_undo == 0) |
| 98 | { |
| 99 | /* If possible and desirable, concatenate the undos. */ |
| 100 | if ((l == 1) && |
| 101 | rl_undo_list && |
| 102 | (rl_undo_list->what == UNDO_INSERT) && |
| 103 | (rl_undo_list->end == rl_point) && |
| 104 | (rl_undo_list->end - rl_undo_list->start < 20)) |
| 105 | rl_undo_list->end++; |
| 106 | else |
| 107 | rl_add_undo (UNDO_INSERT, rl_point, rl_point + l, (char *)NULL); |
| 108 | } |
| 109 | rl_point += l; |
| 110 | rl_end += l; |
| 111 | rl_line_buffer[rl_end] = '\0'; |
| 112 | return l; |
| 113 | } |
| 114 | |
| 115 | /* Delete the string between FROM and TO. FROM is inclusive, TO is not. |
| 116 | Returns the number of characters deleted. */ |
| 117 | int |
| 118 | rl_delete_text (from, to) |
| 119 | int from, to; |
| 120 | { |
| 121 | register char *text; |
| 122 | register int diff, i; |
| 123 | |
| 124 | /* Fix it if the caller is confused. */ |
| 125 | if (from > to) |
| 126 | SWAP (from, to); |
| 127 | |
| 128 | /* fix boundaries */ |
| 129 | if (to > rl_end) |
| 130 | { |
| 131 | to = rl_end; |
| 132 | if (from > to) |
| 133 | from = to; |
| 134 | } |
| 135 | if (from < 0) |
| 136 | from = 0; |
| 137 | |
| 138 | text = rl_copy_text (from, to); |
| 139 | |
| 140 | /* Some versions of strncpy() can't handle overlapping arguments. */ |
| 141 | diff = to - from; |
| 142 | for (i = from; i < rl_end - diff; i++) |
| 143 | rl_line_buffer[i] = rl_line_buffer[i + diff]; |
| 144 | |
| 145 | /* Remember how to undo this delete. */ |
| 146 | if (_rl_doing_an_undo == 0) |
| 147 | rl_add_undo (UNDO_DELETE, from, to, text); |
| 148 | else |
| 149 | free (text); |
| 150 | |
| 151 | rl_end -= diff; |
| 152 | rl_line_buffer[rl_end] = '\0'; |
| 153 | return (diff); |
| 154 | } |
| 155 | |
| 156 | /* Fix up point so that it is within the line boundaries after killing |
| 157 | text. If FIX_MARK_TOO is non-zero, the mark is forced within line |
| 158 | boundaries also. */ |
| 159 | |
| 160 | #define _RL_FIX_POINT(x) \ |
| 161 | do { \ |
| 162 | if (x > rl_end) \ |
| 163 | x = rl_end; \ |
| 164 | else if (x < 0) \ |
| 165 | x = 0; \ |
| 166 | } while (0) |
| 167 | |
| 168 | void |
| 169 | _rl_fix_point (fix_mark_too) |
| 170 | int fix_mark_too; |
| 171 | { |
| 172 | _RL_FIX_POINT (rl_point); |
| 173 | if (fix_mark_too) |
| 174 | _RL_FIX_POINT (rl_mark); |
| 175 | } |
| 176 | #undef _RL_FIX_POINT |
| 177 | |
| 178 | /* Replace the contents of the line buffer between START and END with |
| 179 | TEXT. The operation is undoable. To replace the entire line in an |
| 180 | undoable mode, use _rl_replace_text(text, 0, rl_end); */ |
| 181 | int |
| 182 | _rl_replace_text (text, start, end) |
| 183 | const char *text; |
| 184 | int start, end; |
| 185 | { |
| 186 | int n; |
| 187 | |
| 188 | rl_begin_undo_group (); |
| 189 | rl_delete_text (start, end + 1); |
| 190 | rl_point = start; |
| 191 | n = rl_insert_text (text); |
| 192 | rl_end_undo_group (); |
| 193 | |
| 194 | return n; |
| 195 | } |
| 196 | |
| 197 | /* Replace the current line buffer contents with TEXT. If CLEAR_UNDO is |
| 198 | non-zero, we free the current undo list. */ |
| 199 | void |
| 200 | rl_replace_line (text, clear_undo) |
| 201 | const char *text; |
| 202 | int clear_undo; |
| 203 | { |
| 204 | int len; |
| 205 | |
| 206 | len = strlen (text); |
| 207 | if (len >= rl_line_buffer_len) |
| 208 | rl_extend_line_buffer (len); |
| 209 | strcpy (rl_line_buffer, text); |
| 210 | rl_end = len; |
| 211 | |
| 212 | if (clear_undo) |
| 213 | rl_free_undo_list (); |
| 214 | |
| 215 | _rl_fix_point (1); |
| 216 | } |
| 217 | |
| 218 | /* **************************************************************** */ |
| 219 | /* */ |
| 220 | /* Readline character functions */ |
| 221 | /* */ |
| 222 | /* **************************************************************** */ |
| 223 | |
| 224 | /* This is not a gap editor, just a stupid line input routine. No hair |
| 225 | is involved in writing any of the functions, and none should be. */ |
| 226 | |
| 227 | /* Note that: |
| 228 | |
| 229 | rl_end is the place in the string that we would place '\0'; |
| 230 | i.e., it is always safe to place '\0' there. |
| 231 | |
| 232 | rl_point is the place in the string where the cursor is. Sometimes |
| 233 | this is the same as rl_end. |
| 234 | |
| 235 | Any command that is called interactively receives two arguments. |
| 236 | The first is a count: the numeric arg pased to this command. |
| 237 | The second is the key which invoked this command. |
| 238 | */ |
| 239 | |
| 240 | /* **************************************************************** */ |
| 241 | /* */ |
| 242 | /* Movement Commands */ |
| 243 | /* */ |
| 244 | /* **************************************************************** */ |
| 245 | |
| 246 | /* Note that if you `optimize' the display for these functions, you cannot |
| 247 | use said functions in other functions which do not do optimizing display. |
| 248 | I.e., you will have to update the data base for rl_redisplay, and you |
| 249 | might as well let rl_redisplay do that job. */ |
| 250 | |
| 251 | /* Move forward COUNT bytes. */ |
| 252 | int |
| 253 | rl_forward_byte (count, key) |
| 254 | int count, key; |
| 255 | { |
| 256 | if (count < 0) |
| 257 | return (rl_backward_byte (-count, key)); |
| 258 | |
| 259 | if (count > 0) |
| 260 | { |
| 261 | int end = rl_point + count; |
| 262 | #if defined (VI_MODE) |
| 263 | int lend = rl_end > 0 ? rl_end - (rl_editing_mode == vi_mode) : rl_end; |
| 264 | #else |
| 265 | int lend = rl_end; |
| 266 | #endif |
| 267 | |
| 268 | if (end > lend) |
| 269 | { |
| 270 | rl_point = lend; |
| 271 | rl_ding (); |
| 272 | } |
| 273 | else |
| 274 | rl_point = end; |
| 275 | } |
| 276 | |
| 277 | if (rl_end < 0) |
| 278 | rl_end = 0; |
| 279 | |
| 280 | return 0; |
| 281 | } |
| 282 | |
| 283 | #if defined (HANDLE_MULTIBYTE) |
| 284 | /* Move forward COUNT characters. */ |
| 285 | int |
| 286 | rl_forward_char (count, key) |
| 287 | int count, key; |
| 288 | { |
| 289 | int point; |
| 290 | |
| 291 | if (MB_CUR_MAX == 1 || rl_byte_oriented) |
| 292 | return (rl_forward_byte (count, key)); |
| 293 | |
| 294 | if (count < 0) |
| 295 | return (rl_backward_char (-count, key)); |
| 296 | |
| 297 | if (count > 0) |
| 298 | { |
| 299 | point = _rl_find_next_mbchar (rl_line_buffer, rl_point, count, MB_FIND_NONZERO); |
| 300 | |
| 301 | #if defined (VI_MODE) |
| 302 | if (rl_end <= point && rl_editing_mode == vi_mode) |
| 303 | point = _rl_find_prev_mbchar (rl_line_buffer, rl_end, MB_FIND_NONZERO); |
| 304 | #endif |
| 305 | |
| 306 | if (rl_point == point) |
| 307 | rl_ding (); |
| 308 | |
| 309 | rl_point = point; |
| 310 | |
| 311 | if (rl_end < 0) |
| 312 | rl_end = 0; |
| 313 | } |
| 314 | |
| 315 | return 0; |
| 316 | } |
| 317 | #else /* !HANDLE_MULTIBYTE */ |
| 318 | int |
| 319 | rl_forward_char (count, key) |
| 320 | int count, key; |
| 321 | { |
| 322 | return (rl_forward_byte (count, key)); |
| 323 | } |
| 324 | #endif /* !HANDLE_MULTIBYTE */ |
| 325 | |
| 326 | /* Backwards compatibility. */ |
| 327 | int |
| 328 | rl_forward (count, key) |
| 329 | int count, key; |
| 330 | { |
| 331 | return (rl_forward_char (count, key)); |
| 332 | } |
| 333 | |
| 334 | /* Move backward COUNT bytes. */ |
| 335 | int |
| 336 | rl_backward_byte (count, key) |
| 337 | int count, key; |
| 338 | { |
| 339 | if (count < 0) |
| 340 | return (rl_forward_byte (-count, key)); |
| 341 | |
| 342 | if (count > 0) |
| 343 | { |
| 344 | if (rl_point < count) |
| 345 | { |
| 346 | rl_point = 0; |
| 347 | rl_ding (); |
| 348 | } |
| 349 | else |
| 350 | rl_point -= count; |
| 351 | } |
| 352 | |
| 353 | if (rl_point < 0) |
| 354 | rl_point = 0; |
| 355 | |
| 356 | return 0; |
| 357 | } |
| 358 | |
| 359 | #if defined (HANDLE_MULTIBYTE) |
| 360 | /* Move backward COUNT characters. */ |
| 361 | int |
| 362 | rl_backward_char (count, key) |
| 363 | int count, key; |
| 364 | { |
| 365 | int point; |
| 366 | |
| 367 | if (MB_CUR_MAX == 1 || rl_byte_oriented) |
| 368 | return (rl_backward_byte (count, key)); |
| 369 | |
| 370 | if (count < 0) |
| 371 | return (rl_forward_char (-count, key)); |
| 372 | |
| 373 | if (count > 0) |
| 374 | { |
| 375 | point = rl_point; |
| 376 | |
| 377 | while (count > 0 && point > 0) |
| 378 | { |
| 379 | point = _rl_find_prev_mbchar (rl_line_buffer, point, MB_FIND_NONZERO); |
| 380 | count--; |
| 381 | } |
| 382 | if (count > 0) |
| 383 | { |
| 384 | rl_point = 0; |
| 385 | rl_ding (); |
| 386 | } |
| 387 | else |
| 388 | rl_point = point; |
| 389 | } |
| 390 | |
| 391 | return 0; |
| 392 | } |
| 393 | #else |
| 394 | int |
| 395 | rl_backward_char (count, key) |
| 396 | int count, key; |
| 397 | { |
| 398 | return (rl_backward_byte (count, key)); |
| 399 | } |
| 400 | #endif |
| 401 | |
| 402 | /* Backwards compatibility. */ |
| 403 | int |
| 404 | rl_backward (count, key) |
| 405 | int count, key; |
| 406 | { |
| 407 | return (rl_backward_char (count, key)); |
| 408 | } |
| 409 | |
| 410 | /* Move to the beginning of the line. */ |
| 411 | int |
| 412 | rl_beg_of_line (count, key) |
| 413 | int count, key; |
| 414 | { |
| 415 | rl_point = 0; |
| 416 | return 0; |
| 417 | } |
| 418 | |
| 419 | /* Move to the end of the line. */ |
| 420 | int |
| 421 | rl_end_of_line (count, key) |
| 422 | int count, key; |
| 423 | { |
| 424 | rl_point = rl_end; |
| 425 | return 0; |
| 426 | } |
| 427 | |
| 428 | /* Move forward a word. We do what Emacs does. Handles multibyte chars. */ |
| 429 | int |
| 430 | rl_forward_word (count, key) |
| 431 | int count, key; |
| 432 | { |
| 433 | int c; |
| 434 | |
| 435 | if (count < 0) |
| 436 | return (rl_backward_word (-count, key)); |
| 437 | |
| 438 | while (count) |
| 439 | { |
| 440 | if (rl_point == rl_end) |
| 441 | return 0; |
| 442 | |
| 443 | /* If we are not in a word, move forward until we are in one. |
| 444 | Then, move forward until we hit a non-alphabetic character. */ |
| 445 | c = _rl_char_value (rl_line_buffer, rl_point); |
| 446 | |
| 447 | if (_rl_walphabetic (c) == 0) |
| 448 | { |
| 449 | rl_point = MB_NEXTCHAR (rl_line_buffer, rl_point, 1, MB_FIND_NONZERO); |
| 450 | while (rl_point < rl_end) |
| 451 | { |
| 452 | c = _rl_char_value (rl_line_buffer, rl_point); |
| 453 | if (_rl_walphabetic (c)) |
| 454 | break; |
| 455 | rl_point = MB_NEXTCHAR (rl_line_buffer, rl_point, 1, MB_FIND_NONZERO); |
| 456 | } |
| 457 | } |
| 458 | |
| 459 | if (rl_point == rl_end) |
| 460 | return 0; |
| 461 | |
| 462 | rl_point = MB_NEXTCHAR (rl_line_buffer, rl_point, 1, MB_FIND_NONZERO); |
| 463 | while (rl_point < rl_end) |
| 464 | { |
| 465 | c = _rl_char_value (rl_line_buffer, rl_point); |
| 466 | if (_rl_walphabetic (c) == 0) |
| 467 | break; |
| 468 | rl_point = MB_NEXTCHAR (rl_line_buffer, rl_point, 1, MB_FIND_NONZERO); |
| 469 | } |
| 470 | |
| 471 | --count; |
| 472 | } |
| 473 | |
| 474 | return 0; |
| 475 | } |
| 476 | |
| 477 | /* Move backward a word. We do what Emacs does. Handles multibyte chars. */ |
| 478 | int |
| 479 | rl_backward_word (count, key) |
| 480 | int count, key; |
| 481 | { |
| 482 | int c, p; |
| 483 | |
| 484 | if (count < 0) |
| 485 | return (rl_forward_word (-count, key)); |
| 486 | |
| 487 | while (count) |
| 488 | { |
| 489 | if (rl_point == 0) |
| 490 | return 0; |
| 491 | |
| 492 | /* Like rl_forward_word (), except that we look at the characters |
| 493 | just before point. */ |
| 494 | |
| 495 | p = MB_PREVCHAR (rl_line_buffer, rl_point, MB_FIND_NONZERO); |
| 496 | c = _rl_char_value (rl_line_buffer, p); |
| 497 | |
| 498 | if (_rl_walphabetic (c) == 0) |
| 499 | { |
| 500 | rl_point = p; |
| 501 | while (rl_point > 0) |
| 502 | { |
| 503 | p = MB_PREVCHAR (rl_line_buffer, rl_point, MB_FIND_NONZERO); |
| 504 | c = _rl_char_value (rl_line_buffer, p); |
| 505 | if (_rl_walphabetic (c)) |
| 506 | break; |
| 507 | rl_point = p; |
| 508 | } |
| 509 | } |
| 510 | |
| 511 | while (rl_point) |
| 512 | { |
| 513 | p = MB_PREVCHAR (rl_line_buffer, rl_point, MB_FIND_NONZERO); |
| 514 | c = _rl_char_value (rl_line_buffer, p); |
| 515 | if (_rl_walphabetic (c) == 0) |
| 516 | break; |
| 517 | else |
| 518 | rl_point = p; |
| 519 | } |
| 520 | |
| 521 | --count; |
| 522 | } |
| 523 | |
| 524 | return 0; |
| 525 | } |
| 526 | |
| 527 | /* Clear the current line. Numeric argument to C-l does this. */ |
| 528 | int |
| 529 | rl_refresh_line (ignore1, ignore2) |
| 530 | int ignore1, ignore2; |
| 531 | { |
| 532 | int curr_line; |
| 533 | |
| 534 | curr_line = _rl_current_display_line (); |
| 535 | |
| 536 | _rl_move_vert (curr_line); |
| 537 | _rl_move_cursor_relative (0, rl_line_buffer); /* XXX is this right */ |
| 538 | |
| 539 | _rl_clear_to_eol (0); /* arg of 0 means to not use spaces */ |
| 540 | |
| 541 | rl_forced_update_display (); |
| 542 | rl_display_fixed = 1; |
| 543 | |
| 544 | return 0; |
| 545 | } |
| 546 | |
| 547 | /* C-l typed to a line without quoting clears the screen, and then reprints |
| 548 | the prompt and the current input line. Given a numeric arg, redraw only |
| 549 | the current line. */ |
| 550 | int |
| 551 | rl_clear_screen (count, key) |
| 552 | int count, key; |
| 553 | { |
| 554 | if (rl_explicit_arg) |
| 555 | { |
| 556 | rl_refresh_line (count, key); |
| 557 | return 0; |
| 558 | } |
| 559 | |
| 560 | _rl_clear_screen (); /* calls termcap function to clear screen */ |
| 561 | rl_forced_update_display (); |
| 562 | rl_display_fixed = 1; |
| 563 | |
| 564 | return 0; |
| 565 | } |
| 566 | |
| 567 | int |
| 568 | rl_arrow_keys (count, c) |
| 569 | int count, c; |
| 570 | { |
| 571 | int ch; |
| 572 | |
| 573 | RL_SETSTATE(RL_STATE_MOREINPUT); |
| 574 | ch = rl_read_key (); |
| 575 | RL_UNSETSTATE(RL_STATE_MOREINPUT); |
| 576 | |
| 577 | switch (_rl_to_upper (ch)) |
| 578 | { |
| 579 | case 'A': |
| 580 | rl_get_previous_history (count, ch); |
| 581 | break; |
| 582 | |
| 583 | case 'B': |
| 584 | rl_get_next_history (count, ch); |
| 585 | break; |
| 586 | |
| 587 | case 'C': |
| 588 | if (MB_CUR_MAX > 1 && rl_byte_oriented == 0) |
| 589 | rl_forward_char (count, ch); |
| 590 | else |
| 591 | rl_forward_byte (count, ch); |
| 592 | break; |
| 593 | |
| 594 | case 'D': |
| 595 | if (MB_CUR_MAX > 1 && rl_byte_oriented == 0) |
| 596 | rl_backward_char (count, ch); |
| 597 | else |
| 598 | rl_backward_byte (count, ch); |
| 599 | break; |
| 600 | |
| 601 | default: |
| 602 | rl_ding (); |
| 603 | } |
| 604 | |
| 605 | return 0; |
| 606 | } |
| 607 | |
| 608 | /* **************************************************************** */ |
| 609 | /* */ |
| 610 | /* Text commands */ |
| 611 | /* */ |
| 612 | /* **************************************************************** */ |
| 613 | |
| 614 | #ifdef HANDLE_MULTIBYTE |
| 615 | static char pending_bytes[MB_LEN_MAX]; |
| 616 | static int pending_bytes_length = 0; |
| 617 | static mbstate_t ps = {0}; |
| 618 | #endif |
| 619 | |
| 620 | /* Insert the character C at the current location, moving point forward. |
| 621 | If C introduces a multibyte sequence, we read the whole sequence and |
| 622 | then insert the multibyte char into the line buffer. */ |
| 623 | int |
| 624 | _rl_insert_char (count, c) |
| 625 | int count, c; |
| 626 | { |
| 627 | register int i; |
| 628 | char *string; |
| 629 | #ifdef HANDLE_MULTIBYTE |
| 630 | int string_size; |
| 631 | char incoming[MB_LEN_MAX + 1]; |
| 632 | int incoming_length = 0; |
| 633 | mbstate_t ps_back; |
| 634 | static int stored_count = 0; |
| 635 | #endif |
| 636 | |
| 637 | if (count <= 0) |
| 638 | return 0; |
| 639 | |
| 640 | #if defined (HANDLE_MULTIBYTE) |
| 641 | if (MB_CUR_MAX == 1 || rl_byte_oriented) |
| 642 | { |
| 643 | incoming[0] = c; |
| 644 | incoming[1] = '\0'; |
| 645 | incoming_length = 1; |
| 646 | } |
| 647 | else |
| 648 | { |
| 649 | wchar_t wc; |
| 650 | size_t ret; |
| 651 | |
| 652 | if (stored_count <= 0) |
| 653 | stored_count = count; |
| 654 | else |
| 655 | count = stored_count; |
| 656 | |
| 657 | ps_back = ps; |
| 658 | pending_bytes[pending_bytes_length++] = c; |
| 659 | ret = mbrtowc (&wc, pending_bytes, pending_bytes_length, &ps); |
| 660 | |
| 661 | if (ret == (size_t)-2) |
| 662 | { |
| 663 | /* Bytes too short to compose character, try to wait for next byte. |
| 664 | Restore the state of the byte sequence, because in this case the |
| 665 | effect of mbstate is undefined. */ |
| 666 | ps = ps_back; |
| 667 | return 1; |
| 668 | } |
| 669 | else if (ret == (size_t)-1) |
| 670 | { |
| 671 | /* Invalid byte sequence for the current locale. Treat first byte |
| 672 | as a single character. */ |
| 673 | incoming[0] = pending_bytes[0]; |
| 674 | incoming[1] = '\0'; |
| 675 | incoming_length = 1; |
| 676 | pending_bytes_length--; |
| 677 | memmove (pending_bytes, pending_bytes + 1, pending_bytes_length); |
| 678 | /* Clear the state of the byte sequence, because in this case the |
| 679 | effect of mbstate is undefined. */ |
| 680 | memset (&ps, 0, sizeof (mbstate_t)); |
| 681 | } |
| 682 | else if (ret == (size_t)0) |
| 683 | { |
| 684 | incoming[0] = '\0'; |
| 685 | incoming_length = 0; |
| 686 | pending_bytes_length--; |
| 687 | /* Clear the state of the byte sequence, because in this case the |
| 688 | effect of mbstate is undefined. */ |
| 689 | memset (&ps, 0, sizeof (mbstate_t)); |
| 690 | } |
| 691 | else |
| 692 | { |
| 693 | /* We successfully read a single multibyte character. */ |
| 694 | memcpy (incoming, pending_bytes, pending_bytes_length); |
| 695 | incoming[pending_bytes_length] = '\0'; |
| 696 | incoming_length = pending_bytes_length; |
| 697 | pending_bytes_length = 0; |
| 698 | } |
| 699 | } |
| 700 | #endif /* HANDLE_MULTIBYTE */ |
| 701 | |
| 702 | /* If we can optimize, then do it. But don't let people crash |
| 703 | readline because of extra large arguments. */ |
| 704 | if (count > 1 && count <= 1024) |
| 705 | { |
| 706 | #if defined (HANDLE_MULTIBYTE) |
| 707 | string_size = count * incoming_length; |
| 708 | string = (char *)xmalloc (1 + string_size); |
| 709 | |
| 710 | i = 0; |
| 711 | while (i < string_size) |
| 712 | { |
| 713 | strncpy (string + i, incoming, incoming_length); |
| 714 | i += incoming_length; |
| 715 | } |
| 716 | incoming_length = 0; |
| 717 | stored_count = 0; |
| 718 | #else /* !HANDLE_MULTIBYTE */ |
| 719 | string = (char *)xmalloc (1 + count); |
| 720 | |
| 721 | for (i = 0; i < count; i++) |
| 722 | string[i] = c; |
| 723 | #endif /* !HANDLE_MULTIBYTE */ |
| 724 | |
| 725 | string[i] = '\0'; |
| 726 | rl_insert_text (string); |
| 727 | free (string); |
| 728 | |
| 729 | return 0; |
| 730 | } |
| 731 | |
| 732 | if (count > 1024) |
| 733 | { |
| 734 | int decreaser; |
| 735 | #if defined (HANDLE_MULTIBYTE) |
| 736 | string_size = incoming_length * 1024; |
| 737 | string = (char *)xmalloc (1 + string_size); |
| 738 | |
| 739 | i = 0; |
| 740 | while (i < string_size) |
| 741 | { |
| 742 | strncpy (string + i, incoming, incoming_length); |
| 743 | i += incoming_length; |
| 744 | } |
| 745 | |
| 746 | while (count) |
| 747 | { |
| 748 | decreaser = (count > 1024) ? 1024 : count; |
| 749 | string[decreaser*incoming_length] = '\0'; |
| 750 | rl_insert_text (string); |
| 751 | count -= decreaser; |
| 752 | } |
| 753 | |
| 754 | free (string); |
| 755 | incoming_length = 0; |
| 756 | stored_count = 0; |
| 757 | #else /* !HANDLE_MULTIBYTE */ |
| 758 | char str[1024+1]; |
| 759 | |
| 760 | for (i = 0; i < 1024; i++) |
| 761 | str[i] = c; |
| 762 | |
| 763 | while (count) |
| 764 | { |
| 765 | decreaser = (count > 1024 ? 1024 : count); |
| 766 | str[decreaser] = '\0'; |
| 767 | rl_insert_text (str); |
| 768 | count -= decreaser; |
| 769 | } |
| 770 | #endif /* !HANDLE_MULTIBYTE */ |
| 771 | |
| 772 | return 0; |
| 773 | } |
| 774 | |
| 775 | if (MB_CUR_MAX == 1 || rl_byte_oriented) |
| 776 | { |
| 777 | /* We are inserting a single character. |
| 778 | If there is pending input, then make a string of all of the |
| 779 | pending characters that are bound to rl_insert, and insert |
| 780 | them all. */ |
| 781 | if (_rl_any_typein ()) |
| 782 | _rl_insert_typein (c); |
| 783 | else |
| 784 | { |
| 785 | /* Inserting a single character. */ |
| 786 | char str[2]; |
| 787 | |
| 788 | str[1] = '\0'; |
| 789 | str[0] = c; |
| 790 | rl_insert_text (str); |
| 791 | } |
| 792 | } |
| 793 | #if defined (HANDLE_MULTIBYTE) |
| 794 | else |
| 795 | { |
| 796 | rl_insert_text (incoming); |
| 797 | stored_count = 0; |
| 798 | } |
| 799 | #endif |
| 800 | |
| 801 | return 0; |
| 802 | } |
| 803 | |
| 804 | /* Overwrite the character at point (or next COUNT characters) with C. |
| 805 | If C introduces a multibyte character sequence, read the entire sequence |
| 806 | before starting the overwrite loop. */ |
| 807 | int |
| 808 | _rl_overwrite_char (count, c) |
| 809 | int count, c; |
| 810 | { |
| 811 | int i; |
| 812 | #if defined (HANDLE_MULTIBYTE) |
| 813 | char mbkey[MB_LEN_MAX]; |
| 814 | int k; |
| 815 | |
| 816 | /* Read an entire multibyte character sequence to insert COUNT times. */ |
| 817 | if (count > 0 && MB_CUR_MAX > 1 && rl_byte_oriented == 0) |
| 818 | k = _rl_read_mbstring (c, mbkey, MB_LEN_MAX); |
| 819 | #endif |
| 820 | |
| 821 | rl_begin_undo_group (); |
| 822 | |
| 823 | for (i = 0; i < count; i++) |
| 824 | { |
| 825 | #if defined (HANDLE_MULTIBYTE) |
| 826 | if (MB_CUR_MAX > 1 && rl_byte_oriented == 0) |
| 827 | rl_insert_text (mbkey); |
| 828 | else |
| 829 | #endif |
| 830 | _rl_insert_char (1, c); |
| 831 | |
| 832 | if (rl_point < rl_end) |
| 833 | rl_delete (1, c); |
| 834 | } |
| 835 | |
| 836 | rl_end_undo_group (); |
| 837 | |
| 838 | return 0; |
| 839 | } |
| 840 | |
| 841 | int |
| 842 | rl_insert (count, c) |
| 843 | int count, c; |
| 844 | { |
| 845 | return (rl_insert_mode == RL_IM_INSERT ? _rl_insert_char (count, c) |
| 846 | : _rl_overwrite_char (count, c)); |
| 847 | } |
| 848 | |
| 849 | /* Insert the next typed character verbatim. */ |
| 850 | static int |
| 851 | _rl_insert_next (count) |
| 852 | int count; |
| 853 | { |
| 854 | int c; |
| 855 | |
| 856 | RL_SETSTATE(RL_STATE_MOREINPUT); |
| 857 | c = rl_read_key (); |
| 858 | RL_UNSETSTATE(RL_STATE_MOREINPUT); |
| 859 | |
| 860 | #if defined (HANDLE_SIGNALS) |
| 861 | if (RL_ISSTATE (RL_STATE_CALLBACK) == 0) |
| 862 | _rl_restore_tty_signals (); |
| 863 | #endif |
| 864 | |
| 865 | return (_rl_insert_char (count, c)); |
| 866 | } |
| 867 | |
| 868 | #if defined (READLINE_CALLBACKS) |
| 869 | static int |
| 870 | _rl_insert_next_callback (data) |
| 871 | _rl_callback_generic_arg *data; |
| 872 | { |
| 873 | int count; |
| 874 | |
| 875 | count = data->count; |
| 876 | |
| 877 | /* Deregister function, let rl_callback_read_char deallocate data */ |
| 878 | _rl_callback_func = 0; |
| 879 | _rl_want_redisplay = 1; |
| 880 | |
| 881 | return _rl_insert_next (count); |
| 882 | } |
| 883 | #endif |
| 884 | |
| 885 | int |
| 886 | rl_quoted_insert (count, key) |
| 887 | int count, key; |
| 888 | { |
| 889 | /* Let's see...should the callback interface futz with signal handling? */ |
| 890 | #if defined (HANDLE_SIGNALS) |
| 891 | if (RL_ISSTATE (RL_STATE_CALLBACK) == 0) |
| 892 | _rl_disable_tty_signals (); |
| 893 | #endif |
| 894 | |
| 895 | #if defined (READLINE_CALLBACKS) |
| 896 | if (RL_ISSTATE (RL_STATE_CALLBACK)) |
| 897 | { |
| 898 | _rl_callback_data = _rl_callback_data_alloc (count); |
| 899 | _rl_callback_func = _rl_insert_next_callback; |
| 900 | return (0); |
| 901 | } |
| 902 | #endif |
| 903 | |
| 904 | return _rl_insert_next (count); |
| 905 | } |
| 906 | |
| 907 | /* Insert a tab character. */ |
| 908 | int |
| 909 | rl_tab_insert (count, key) |
| 910 | int count, key; |
| 911 | { |
| 912 | return (_rl_insert_char (count, '\t')); |
| 913 | } |
| 914 | |
| 915 | /* What to do when a NEWLINE is pressed. We accept the whole line. |
| 916 | KEY is the key that invoked this command. I guess it could have |
| 917 | meaning in the future. */ |
| 918 | int |
| 919 | rl_newline (count, key) |
| 920 | int count, key; |
| 921 | { |
| 922 | rl_done = 1; |
| 923 | |
| 924 | if (_rl_history_preserve_point) |
| 925 | _rl_history_saved_point = (rl_point == rl_end) ? -1 : rl_point; |
| 926 | |
| 927 | RL_SETSTATE(RL_STATE_DONE); |
| 928 | |
| 929 | #if defined (VI_MODE) |
| 930 | if (rl_editing_mode == vi_mode) |
| 931 | { |
| 932 | _rl_vi_done_inserting (); |
| 933 | if (_rl_vi_textmod_command (_rl_vi_last_command) == 0) /* XXX */ |
| 934 | _rl_vi_reset_last (); |
| 935 | } |
| 936 | #endif /* VI_MODE */ |
| 937 | |
| 938 | /* If we've been asked to erase empty lines, suppress the final update, |
| 939 | since _rl_update_final calls rl_crlf(). */ |
| 940 | if (rl_erase_empty_line && rl_point == 0 && rl_end == 0) |
| 941 | return 0; |
| 942 | |
| 943 | if (readline_echoing_p) |
| 944 | _rl_update_final (); |
| 945 | return 0; |
| 946 | } |
| 947 | |
| 948 | /* What to do for some uppercase characters, like meta characters, |
| 949 | and some characters appearing in emacs_ctlx_keymap. This function |
| 950 | is just a stub, you bind keys to it and the code in _rl_dispatch () |
| 951 | is special cased. */ |
| 952 | int |
| 953 | rl_do_lowercase_version (ignore1, ignore2) |
| 954 | int ignore1, ignore2; |
| 955 | { |
| 956 | return 0; |
| 957 | } |
| 958 | |
| 959 | /* This is different from what vi does, so the code's not shared. Emacs |
| 960 | rubout in overwrite mode has one oddity: it replaces a control |
| 961 | character that's displayed as two characters (^X) with two spaces. */ |
| 962 | int |
| 963 | _rl_overwrite_rubout (count, key) |
| 964 | int count, key; |
| 965 | { |
| 966 | int opoint; |
| 967 | int i, l; |
| 968 | |
| 969 | if (rl_point == 0) |
| 970 | { |
| 971 | rl_ding (); |
| 972 | return 1; |
| 973 | } |
| 974 | |
| 975 | opoint = rl_point; |
| 976 | |
| 977 | /* L == number of spaces to insert */ |
| 978 | for (i = l = 0; i < count; i++) |
| 979 | { |
| 980 | rl_backward_char (1, key); |
| 981 | l += rl_character_len (rl_line_buffer[rl_point], rl_point); /* not exactly right */ |
| 982 | } |
| 983 | |
| 984 | rl_begin_undo_group (); |
| 985 | |
| 986 | if (count > 1 || rl_explicit_arg) |
| 987 | rl_kill_text (opoint, rl_point); |
| 988 | else |
| 989 | rl_delete_text (opoint, rl_point); |
| 990 | |
| 991 | /* Emacs puts point at the beginning of the sequence of spaces. */ |
| 992 | if (rl_point < rl_end) |
| 993 | { |
| 994 | opoint = rl_point; |
| 995 | _rl_insert_char (l, ' '); |
| 996 | rl_point = opoint; |
| 997 | } |
| 998 | |
| 999 | rl_end_undo_group (); |
| 1000 | |
| 1001 | return 0; |
| 1002 | } |
| 1003 | |
| 1004 | /* Rubout the character behind point. */ |
| 1005 | int |
| 1006 | rl_rubout (count, key) |
| 1007 | int count, key; |
| 1008 | { |
| 1009 | if (count < 0) |
| 1010 | return (rl_delete (-count, key)); |
| 1011 | |
| 1012 | if (!rl_point) |
| 1013 | { |
| 1014 | rl_ding (); |
| 1015 | return -1; |
| 1016 | } |
| 1017 | |
| 1018 | if (rl_insert_mode == RL_IM_OVERWRITE) |
| 1019 | return (_rl_overwrite_rubout (count, key)); |
| 1020 | |
| 1021 | return (_rl_rubout_char (count, key)); |
| 1022 | } |
| 1023 | |
| 1024 | int |
| 1025 | _rl_rubout_char (count, key) |
| 1026 | int count, key; |
| 1027 | { |
| 1028 | int orig_point; |
| 1029 | unsigned char c; |
| 1030 | |
| 1031 | /* Duplicated code because this is called from other parts of the library. */ |
| 1032 | if (count < 0) |
| 1033 | return (rl_delete (-count, key)); |
| 1034 | |
| 1035 | if (rl_point == 0) |
| 1036 | { |
| 1037 | rl_ding (); |
| 1038 | return -1; |
| 1039 | } |
| 1040 | |
| 1041 | orig_point = rl_point; |
| 1042 | if (count > 1 || rl_explicit_arg) |
| 1043 | { |
| 1044 | rl_backward_char (count, key); |
| 1045 | rl_kill_text (orig_point, rl_point); |
| 1046 | } |
| 1047 | else if (MB_CUR_MAX == 1 || rl_byte_oriented) |
| 1048 | { |
| 1049 | c = rl_line_buffer[--rl_point]; |
| 1050 | rl_delete_text (rl_point, orig_point); |
| 1051 | /* The erase-at-end-of-line hack is of questionable merit now. */ |
| 1052 | if (rl_point == rl_end && ISPRINT (c) && _rl_last_c_pos) |
| 1053 | { |
| 1054 | int l; |
| 1055 | l = rl_character_len (c, rl_point); |
| 1056 | _rl_erase_at_end_of_line (l); |
| 1057 | } |
| 1058 | } |
| 1059 | else |
| 1060 | { |
| 1061 | rl_point = _rl_find_prev_mbchar (rl_line_buffer, rl_point, MB_FIND_NONZERO); |
| 1062 | rl_delete_text (rl_point, orig_point); |
| 1063 | } |
| 1064 | |
| 1065 | return 0; |
| 1066 | } |
| 1067 | |
| 1068 | /* Delete the character under the cursor. Given a numeric argument, |
| 1069 | kill that many characters instead. */ |
| 1070 | int |
| 1071 | rl_delete (count, key) |
| 1072 | int count, key; |
| 1073 | { |
| 1074 | if (count < 0) |
| 1075 | return (_rl_rubout_char (-count, key)); |
| 1076 | |
| 1077 | if (rl_point == rl_end) |
| 1078 | { |
| 1079 | rl_ding (); |
| 1080 | return -1; |
| 1081 | } |
| 1082 | |
| 1083 | if (count > 1 || rl_explicit_arg) |
| 1084 | { |
| 1085 | int orig_point = rl_point; |
| 1086 | if (MB_CUR_MAX > 1 && rl_byte_oriented == 0) |
| 1087 | rl_forward_char (count, key); |
| 1088 | else |
| 1089 | rl_forward_byte (count, key); |
| 1090 | |
| 1091 | rl_kill_text (orig_point, rl_point); |
| 1092 | rl_point = orig_point; |
| 1093 | } |
| 1094 | else |
| 1095 | { |
| 1096 | int new_point; |
| 1097 | |
| 1098 | new_point = MB_NEXTCHAR (rl_line_buffer, rl_point, 1, MB_FIND_NONZERO); |
| 1099 | rl_delete_text (rl_point, new_point); |
| 1100 | } |
| 1101 | return 0; |
| 1102 | } |
| 1103 | |
| 1104 | /* Delete the character under the cursor, unless the insertion |
| 1105 | point is at the end of the line, in which case the character |
| 1106 | behind the cursor is deleted. COUNT is obeyed and may be used |
| 1107 | to delete forward or backward that many characters. */ |
| 1108 | int |
| 1109 | rl_rubout_or_delete (count, key) |
| 1110 | int count, key; |
| 1111 | { |
| 1112 | if (rl_end != 0 && rl_point == rl_end) |
| 1113 | return (_rl_rubout_char (count, key)); |
| 1114 | else |
| 1115 | return (rl_delete (count, key)); |
| 1116 | } |
| 1117 | |
| 1118 | /* Delete all spaces and tabs around point. */ |
| 1119 | int |
| 1120 | rl_delete_horizontal_space (count, ignore) |
| 1121 | int count, ignore; |
| 1122 | { |
| 1123 | int start = rl_point; |
| 1124 | |
| 1125 | while (rl_point && whitespace (rl_line_buffer[rl_point - 1])) |
| 1126 | rl_point--; |
| 1127 | |
| 1128 | start = rl_point; |
| 1129 | |
| 1130 | while (rl_point < rl_end && whitespace (rl_line_buffer[rl_point])) |
| 1131 | rl_point++; |
| 1132 | |
| 1133 | if (start != rl_point) |
| 1134 | { |
| 1135 | rl_delete_text (start, rl_point); |
| 1136 | rl_point = start; |
| 1137 | } |
| 1138 | |
| 1139 | if (rl_point < 0) |
| 1140 | rl_point = 0; |
| 1141 | |
| 1142 | return 0; |
| 1143 | } |
| 1144 | |
| 1145 | /* Like the tcsh editing function delete-char-or-list. The eof character |
| 1146 | is caught before this is invoked, so this really does the same thing as |
| 1147 | delete-char-or-list-or-eof, as long as it's bound to the eof character. */ |
| 1148 | int |
| 1149 | rl_delete_or_show_completions (count, key) |
| 1150 | int count, key; |
| 1151 | { |
| 1152 | if (rl_end != 0 && rl_point == rl_end) |
| 1153 | return (rl_possible_completions (count, key)); |
| 1154 | else |
| 1155 | return (rl_delete (count, key)); |
| 1156 | } |
| 1157 | |
| 1158 | #ifndef RL_COMMENT_BEGIN_DEFAULT |
| 1159 | #define RL_COMMENT_BEGIN_DEFAULT "#" |
| 1160 | #endif |
| 1161 | |
| 1162 | /* Turn the current line into a comment in shell history. |
| 1163 | A K*rn shell style function. */ |
| 1164 | int |
| 1165 | rl_insert_comment (count, key) |
| 1166 | int count, key; |
| 1167 | { |
| 1168 | char *rl_comment_text; |
| 1169 | int rl_comment_len; |
| 1170 | |
| 1171 | rl_beg_of_line (1, key); |
| 1172 | rl_comment_text = _rl_comment_begin ? _rl_comment_begin : RL_COMMENT_BEGIN_DEFAULT; |
| 1173 | |
| 1174 | if (rl_explicit_arg == 0) |
| 1175 | rl_insert_text (rl_comment_text); |
| 1176 | else |
| 1177 | { |
| 1178 | rl_comment_len = strlen (rl_comment_text); |
| 1179 | if (STREQN (rl_comment_text, rl_line_buffer, rl_comment_len)) |
| 1180 | rl_delete_text (rl_point, rl_point + rl_comment_len); |
| 1181 | else |
| 1182 | rl_insert_text (rl_comment_text); |
| 1183 | } |
| 1184 | |
| 1185 | (*rl_redisplay_function) (); |
| 1186 | rl_newline (1, '\n'); |
| 1187 | |
| 1188 | return (0); |
| 1189 | } |
| 1190 | |
| 1191 | /* **************************************************************** */ |
| 1192 | /* */ |
| 1193 | /* Changing Case */ |
| 1194 | /* */ |
| 1195 | /* **************************************************************** */ |
| 1196 | |
| 1197 | /* The three kinds of things that we know how to do. */ |
| 1198 | #define UpCase 1 |
| 1199 | #define DownCase 2 |
| 1200 | #define CapCase 3 |
| 1201 | |
| 1202 | /* Uppercase the word at point. */ |
| 1203 | int |
| 1204 | rl_upcase_word (count, key) |
| 1205 | int count, key; |
| 1206 | { |
| 1207 | return (rl_change_case (count, UpCase)); |
| 1208 | } |
| 1209 | |
| 1210 | /* Lowercase the word at point. */ |
| 1211 | int |
| 1212 | rl_downcase_word (count, key) |
| 1213 | int count, key; |
| 1214 | { |
| 1215 | return (rl_change_case (count, DownCase)); |
| 1216 | } |
| 1217 | |
| 1218 | /* Upcase the first letter, downcase the rest. */ |
| 1219 | int |
| 1220 | rl_capitalize_word (count, key) |
| 1221 | int count, key; |
| 1222 | { |
| 1223 | return (rl_change_case (count, CapCase)); |
| 1224 | } |
| 1225 | |
| 1226 | /* The meaty function. |
| 1227 | Change the case of COUNT words, performing OP on them. |
| 1228 | OP is one of UpCase, DownCase, or CapCase. |
| 1229 | If a negative argument is given, leave point where it started, |
| 1230 | otherwise, leave it where it moves to. */ |
| 1231 | static int |
| 1232 | rl_change_case (count, op) |
| 1233 | int count, op; |
| 1234 | { |
| 1235 | int start, next, end; |
| 1236 | int inword, c, nc, nop; |
| 1237 | #if defined (HANDLE_MULTIBYTE) |
| 1238 | wchar_t wc, nwc; |
| 1239 | char mb[MB_LEN_MAX+1]; |
| 1240 | int mblen, p; |
| 1241 | mbstate_t ps; |
| 1242 | #endif |
| 1243 | |
| 1244 | start = rl_point; |
| 1245 | rl_forward_word (count, 0); |
| 1246 | end = rl_point; |
| 1247 | |
| 1248 | if (op != UpCase && op != DownCase && op != CapCase) |
| 1249 | { |
| 1250 | rl_ding (); |
| 1251 | return -1; |
| 1252 | } |
| 1253 | |
| 1254 | if (count < 0) |
| 1255 | SWAP (start, end); |
| 1256 | |
| 1257 | #if defined (HANDLE_MULTIBYTE) |
| 1258 | memset (&ps, 0, sizeof (mbstate_t)); |
| 1259 | #endif |
| 1260 | |
| 1261 | /* We are going to modify some text, so let's prepare to undo it. */ |
| 1262 | rl_modifying (start, end); |
| 1263 | |
| 1264 | inword = 0; |
| 1265 | while (start < end) |
| 1266 | { |
| 1267 | c = _rl_char_value (rl_line_buffer, start); |
| 1268 | /* This assumes that the upper and lower case versions are the same width. */ |
| 1269 | next = MB_NEXTCHAR (rl_line_buffer, start, 1, MB_FIND_NONZERO); |
| 1270 | |
| 1271 | if (_rl_walphabetic (c) == 0) |
| 1272 | { |
| 1273 | inword = 0; |
| 1274 | start = next; |
| 1275 | continue; |
| 1276 | } |
| 1277 | |
| 1278 | if (op == CapCase) |
| 1279 | { |
| 1280 | nop = inword ? DownCase : UpCase; |
| 1281 | inword = 1; |
| 1282 | } |
| 1283 | else |
| 1284 | nop = op; |
| 1285 | if (MB_CUR_MAX == 1 || rl_byte_oriented || isascii (c)) |
| 1286 | { |
| 1287 | nc = (nop == UpCase) ? _rl_to_upper (c) : _rl_to_lower (c); |
| 1288 | rl_line_buffer[start] = nc; |
| 1289 | } |
| 1290 | #if defined (HANDLE_MULTIBYTE) |
| 1291 | else |
| 1292 | { |
| 1293 | mbrtowc (&wc, rl_line_buffer + start, end - start, &ps); |
| 1294 | nwc = (nop == UpCase) ? _rl_to_wupper (wc) : _rl_to_wlower (wc); |
| 1295 | if (nwc != wc) /* just skip unchanged characters */ |
| 1296 | { |
| 1297 | mblen = wcrtomb (mb, nwc, &ps); |
| 1298 | if (mblen > 0) |
| 1299 | mb[mblen] = '\0'; |
| 1300 | /* Assume the same width */ |
| 1301 | strncpy (rl_line_buffer + start, mb, mblen); |
| 1302 | } |
| 1303 | } |
| 1304 | #endif |
| 1305 | |
| 1306 | start = next; |
| 1307 | } |
| 1308 | |
| 1309 | rl_point = end; |
| 1310 | return 0; |
| 1311 | } |
| 1312 | |
| 1313 | /* **************************************************************** */ |
| 1314 | /* */ |
| 1315 | /* Transposition */ |
| 1316 | /* */ |
| 1317 | /* **************************************************************** */ |
| 1318 | |
| 1319 | /* Transpose the words at point. If point is at the end of the line, |
| 1320 | transpose the two words before point. */ |
| 1321 | int |
| 1322 | rl_transpose_words (count, key) |
| 1323 | int count, key; |
| 1324 | { |
| 1325 | char *word1, *word2; |
| 1326 | int w1_beg, w1_end, w2_beg, w2_end; |
| 1327 | int orig_point = rl_point; |
| 1328 | |
| 1329 | if (!count) |
| 1330 | return 0; |
| 1331 | |
| 1332 | /* Find the two words. */ |
| 1333 | rl_forward_word (count, key); |
| 1334 | w2_end = rl_point; |
| 1335 | rl_backward_word (1, key); |
| 1336 | w2_beg = rl_point; |
| 1337 | rl_backward_word (count, key); |
| 1338 | w1_beg = rl_point; |
| 1339 | rl_forward_word (1, key); |
| 1340 | w1_end = rl_point; |
| 1341 | |
| 1342 | /* Do some check to make sure that there really are two words. */ |
| 1343 | if ((w1_beg == w2_beg) || (w2_beg < w1_end)) |
| 1344 | { |
| 1345 | rl_ding (); |
| 1346 | rl_point = orig_point; |
| 1347 | return -1; |
| 1348 | } |
| 1349 | |
| 1350 | /* Get the text of the words. */ |
| 1351 | word1 = rl_copy_text (w1_beg, w1_end); |
| 1352 | word2 = rl_copy_text (w2_beg, w2_end); |
| 1353 | |
| 1354 | /* We are about to do many insertions and deletions. Remember them |
| 1355 | as one operation. */ |
| 1356 | rl_begin_undo_group (); |
| 1357 | |
| 1358 | /* Do the stuff at word2 first, so that we don't have to worry |
| 1359 | about word1 moving. */ |
| 1360 | rl_point = w2_beg; |
| 1361 | rl_delete_text (w2_beg, w2_end); |
| 1362 | rl_insert_text (word1); |
| 1363 | |
| 1364 | rl_point = w1_beg; |
| 1365 | rl_delete_text (w1_beg, w1_end); |
| 1366 | rl_insert_text (word2); |
| 1367 | |
| 1368 | /* This is exactly correct since the text before this point has not |
| 1369 | changed in length. */ |
| 1370 | rl_point = w2_end; |
| 1371 | |
| 1372 | /* I think that does it. */ |
| 1373 | rl_end_undo_group (); |
| 1374 | free (word1); |
| 1375 | free (word2); |
| 1376 | |
| 1377 | return 0; |
| 1378 | } |
| 1379 | |
| 1380 | /* Transpose the characters at point. If point is at the end of the line, |
| 1381 | then transpose the characters before point. */ |
| 1382 | int |
| 1383 | rl_transpose_chars (count, key) |
| 1384 | int count, key; |
| 1385 | { |
| 1386 | #if defined (HANDLE_MULTIBYTE) |
| 1387 | char *dummy; |
| 1388 | int i; |
| 1389 | #else |
| 1390 | char dummy[2]; |
| 1391 | #endif |
| 1392 | int char_length, prev_point; |
| 1393 | |
| 1394 | if (count == 0) |
| 1395 | return 0; |
| 1396 | |
| 1397 | if (!rl_point || rl_end < 2) |
| 1398 | { |
| 1399 | rl_ding (); |
| 1400 | return -1; |
| 1401 | } |
| 1402 | |
| 1403 | rl_begin_undo_group (); |
| 1404 | |
| 1405 | if (rl_point == rl_end) |
| 1406 | { |
| 1407 | rl_point = MB_PREVCHAR (rl_line_buffer, rl_point, MB_FIND_NONZERO); |
| 1408 | count = 1; |
| 1409 | } |
| 1410 | |
| 1411 | prev_point = rl_point; |
| 1412 | rl_point = MB_PREVCHAR (rl_line_buffer, rl_point, MB_FIND_NONZERO); |
| 1413 | |
| 1414 | #if defined (HANDLE_MULTIBYTE) |
| 1415 | char_length = prev_point - rl_point; |
| 1416 | dummy = (char *)xmalloc (char_length + 1); |
| 1417 | for (i = 0; i < char_length; i++) |
| 1418 | dummy[i] = rl_line_buffer[rl_point + i]; |
| 1419 | dummy[i] = '\0'; |
| 1420 | #else |
| 1421 | dummy[0] = rl_line_buffer[rl_point]; |
| 1422 | dummy[char_length = 1] = '\0'; |
| 1423 | #endif |
| 1424 | |
| 1425 | rl_delete_text (rl_point, rl_point + char_length); |
| 1426 | |
| 1427 | rl_point = _rl_find_next_mbchar (rl_line_buffer, rl_point, count, MB_FIND_NONZERO); |
| 1428 | |
| 1429 | _rl_fix_point (0); |
| 1430 | rl_insert_text (dummy); |
| 1431 | rl_end_undo_group (); |
| 1432 | |
| 1433 | #if defined (HANDLE_MULTIBYTE) |
| 1434 | free (dummy); |
| 1435 | #endif |
| 1436 | |
| 1437 | return 0; |
| 1438 | } |
| 1439 | |
| 1440 | /* **************************************************************** */ |
| 1441 | /* */ |
| 1442 | /* Character Searching */ |
| 1443 | /* */ |
| 1444 | /* **************************************************************** */ |
| 1445 | |
| 1446 | int |
| 1447 | #if defined (HANDLE_MULTIBYTE) |
| 1448 | _rl_char_search_internal (count, dir, smbchar, len) |
| 1449 | int count, dir; |
| 1450 | char *smbchar; |
| 1451 | int len; |
| 1452 | #else |
| 1453 | _rl_char_search_internal (count, dir, schar) |
| 1454 | int count, dir, schar; |
| 1455 | #endif |
| 1456 | { |
| 1457 | int pos, inc; |
| 1458 | #if defined (HANDLE_MULTIBYTE) |
| 1459 | int prepos; |
| 1460 | #endif |
| 1461 | |
| 1462 | pos = rl_point; |
| 1463 | inc = (dir < 0) ? -1 : 1; |
| 1464 | while (count) |
| 1465 | { |
| 1466 | if ((dir < 0 && pos <= 0) || (dir > 0 && pos >= rl_end)) |
| 1467 | { |
| 1468 | rl_ding (); |
| 1469 | return -1; |
| 1470 | } |
| 1471 | |
| 1472 | #if defined (HANDLE_MULTIBYTE) |
| 1473 | pos = (inc > 0) ? _rl_find_next_mbchar (rl_line_buffer, pos, 1, MB_FIND_ANY) |
| 1474 | : _rl_find_prev_mbchar (rl_line_buffer, pos, MB_FIND_ANY); |
| 1475 | #else |
| 1476 | pos += inc; |
| 1477 | #endif |
| 1478 | do |
| 1479 | { |
| 1480 | #if defined (HANDLE_MULTIBYTE) |
| 1481 | if (_rl_is_mbchar_matched (rl_line_buffer, pos, rl_end, smbchar, len)) |
| 1482 | #else |
| 1483 | if (rl_line_buffer[pos] == schar) |
| 1484 | #endif |
| 1485 | { |
| 1486 | count--; |
| 1487 | if (dir < 0) |
| 1488 | rl_point = (dir == BTO) ? _rl_find_next_mbchar (rl_line_buffer, pos, 1, MB_FIND_ANY) |
| 1489 | : pos; |
| 1490 | else |
| 1491 | rl_point = (dir == FTO) ? _rl_find_prev_mbchar (rl_line_buffer, pos, MB_FIND_ANY) |
| 1492 | : pos; |
| 1493 | break; |
| 1494 | } |
| 1495 | #if defined (HANDLE_MULTIBYTE) |
| 1496 | prepos = pos; |
| 1497 | #endif |
| 1498 | } |
| 1499 | #if defined (HANDLE_MULTIBYTE) |
| 1500 | while ((dir < 0) ? (pos = _rl_find_prev_mbchar (rl_line_buffer, pos, MB_FIND_ANY)) != prepos |
| 1501 | : (pos = _rl_find_next_mbchar (rl_line_buffer, pos, 1, MB_FIND_ANY)) != prepos); |
| 1502 | #else |
| 1503 | while ((dir < 0) ? pos-- : ++pos < rl_end); |
| 1504 | #endif |
| 1505 | } |
| 1506 | return (0); |
| 1507 | } |
| 1508 | |
| 1509 | /* Search COUNT times for a character read from the current input stream. |
| 1510 | FDIR is the direction to search if COUNT is non-negative; otherwise |
| 1511 | the search goes in BDIR. So much is dependent on HANDLE_MULTIBYTE |
| 1512 | that there are two separate versions of this function. */ |
| 1513 | #if defined (HANDLE_MULTIBYTE) |
| 1514 | static int |
| 1515 | _rl_char_search (count, fdir, bdir) |
| 1516 | int count, fdir, bdir; |
| 1517 | { |
| 1518 | char mbchar[MB_LEN_MAX]; |
| 1519 | int mb_len; |
| 1520 | |
| 1521 | mb_len = _rl_read_mbchar (mbchar, MB_LEN_MAX); |
| 1522 | |
| 1523 | if (count < 0) |
| 1524 | return (_rl_char_search_internal (-count, bdir, mbchar, mb_len)); |
| 1525 | else |
| 1526 | return (_rl_char_search_internal (count, fdir, mbchar, mb_len)); |
| 1527 | } |
| 1528 | #else /* !HANDLE_MULTIBYTE */ |
| 1529 | static int |
| 1530 | _rl_char_search (count, fdir, bdir) |
| 1531 | int count, fdir, bdir; |
| 1532 | { |
| 1533 | int c; |
| 1534 | |
| 1535 | RL_SETSTATE(RL_STATE_MOREINPUT); |
| 1536 | c = rl_read_key (); |
| 1537 | RL_UNSETSTATE(RL_STATE_MOREINPUT); |
| 1538 | |
| 1539 | if (count < 0) |
| 1540 | return (_rl_char_search_internal (-count, bdir, c)); |
| 1541 | else |
| 1542 | return (_rl_char_search_internal (count, fdir, c)); |
| 1543 | } |
| 1544 | #endif /* !HANDLE_MULTIBYTE */ |
| 1545 | |
| 1546 | #if defined (READLINE_CALLBACKS) |
| 1547 | static int |
| 1548 | _rl_char_search_callback (data) |
| 1549 | _rl_callback_generic_arg *data; |
| 1550 | { |
| 1551 | _rl_callback_func = 0; |
| 1552 | _rl_want_redisplay = 1; |
| 1553 | |
| 1554 | return (_rl_char_search (data->count, data->i1, data->i2)); |
| 1555 | } |
| 1556 | #endif |
| 1557 | |
| 1558 | int |
| 1559 | rl_char_search (count, key) |
| 1560 | int count, key; |
| 1561 | { |
| 1562 | #if defined (READLINE_CALLBACKS) |
| 1563 | if (RL_ISSTATE (RL_STATE_CALLBACK)) |
| 1564 | { |
| 1565 | _rl_callback_data = _rl_callback_data_alloc (count); |
| 1566 | _rl_callback_data->i1 = FFIND; |
| 1567 | _rl_callback_data->i2 = BFIND; |
| 1568 | _rl_callback_func = _rl_char_search_callback; |
| 1569 | return (0); |
| 1570 | } |
| 1571 | #endif |
| 1572 | |
| 1573 | return (_rl_char_search (count, FFIND, BFIND)); |
| 1574 | } |
| 1575 | |
| 1576 | int |
| 1577 | rl_backward_char_search (count, key) |
| 1578 | int count, key; |
| 1579 | { |
| 1580 | #if defined (READLINE_CALLBACKS) |
| 1581 | if (RL_ISSTATE (RL_STATE_CALLBACK)) |
| 1582 | { |
| 1583 | _rl_callback_data = _rl_callback_data_alloc (count); |
| 1584 | _rl_callback_data->i1 = BFIND; |
| 1585 | _rl_callback_data->i2 = FFIND; |
| 1586 | _rl_callback_func = _rl_char_search_callback; |
| 1587 | return (0); |
| 1588 | } |
| 1589 | #endif |
| 1590 | |
| 1591 | return (_rl_char_search (count, BFIND, FFIND)); |
| 1592 | } |
| 1593 | |
| 1594 | /* **************************************************************** */ |
| 1595 | /* */ |
| 1596 | /* The Mark and the Region. */ |
| 1597 | /* */ |
| 1598 | /* **************************************************************** */ |
| 1599 | |
| 1600 | /* Set the mark at POSITION. */ |
| 1601 | int |
| 1602 | _rl_set_mark_at_pos (position) |
| 1603 | int position; |
| 1604 | { |
| 1605 | if (position > rl_end) |
| 1606 | return -1; |
| 1607 | |
| 1608 | rl_mark = position; |
| 1609 | return 0; |
| 1610 | } |
| 1611 | |
| 1612 | /* A bindable command to set the mark. */ |
| 1613 | int |
| 1614 | rl_set_mark (count, key) |
| 1615 | int count, key; |
| 1616 | { |
| 1617 | return (_rl_set_mark_at_pos (rl_explicit_arg ? count : rl_point)); |
| 1618 | } |
| 1619 | |
| 1620 | /* Exchange the position of mark and point. */ |
| 1621 | int |
| 1622 | rl_exchange_point_and_mark (count, key) |
| 1623 | int count, key; |
| 1624 | { |
| 1625 | if (rl_mark > rl_end) |
| 1626 | rl_mark = -1; |
| 1627 | |
| 1628 | if (rl_mark == -1) |
| 1629 | { |
| 1630 | rl_ding (); |
| 1631 | return -1; |
| 1632 | } |
| 1633 | else |
| 1634 | SWAP (rl_point, rl_mark); |
| 1635 | |
| 1636 | return 0; |
| 1637 | } |