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annotate src/editfns.c @ 4614:afbfad080ddd
The URLs in our current config.guess and config.sub files are obsolete.
Update to the latest upstream release to get correct URLs, as well as fixes
and enhancements to those scripts.
| author | Jerry James <james@xemacs.org> |
|---|---|
| date | Wed, 11 Feb 2009 11:09:35 -0700 |
| parents | c76b1bc6bd28 |
| children | 80cd90837ac5 |
| rev | line source |
|---|---|
| 428 | 1 /* Lisp functions pertaining to editing. |
| 2 Copyright (C) 1985-1987, 1989, 1992-1995 Free Software Foundation, Inc. | |
| 3 Copyright (C) 1995 Tinker Systems and INS Engineering Corp. | |
| 2367 | 4 Copyright (C) 1996, 2001, 2002, 2004 Ben Wing. |
| 428 | 5 |
| 6 This file is part of XEmacs. | |
| 7 | |
| 8 XEmacs is free software; you can redistribute it and/or modify it | |
| 9 under the terms of the GNU General Public License as published by the | |
| 10 Free Software Foundation; either version 2, or (at your option) any | |
| 11 later version. | |
| 12 | |
| 13 XEmacs is distributed in the hope that it will be useful, but WITHOUT | |
| 14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 16 for more details. | |
| 17 | |
| 18 You should have received a copy of the GNU General Public License | |
| 19 along with XEmacs; see the file COPYING. If not, write to | |
| 20 the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
| 21 Boston, MA 02111-1307, USA. */ | |
| 22 | |
| 23 /* Synched up with: Mule 2.0, FSF 19.30. */ | |
| 24 | |
| 771 | 25 /* This file has been Mule-ized, June 2001. */ |
| 428 | 26 |
| 27 /* Hacked on for Mule by Ben Wing, December 1994. */ | |
| 28 | |
| 29 #include <config.h> | |
| 30 #include "lisp.h" | |
| 31 | |
| 32 #include "buffer.h" | |
| 800 | 33 #include "casetab.h" |
| 34 #include "chartab.h" | |
| 877 | 35 #include "commands.h" /* for zmacs_region functions */ |
| 800 | 36 #include "device.h" |
| 428 | 37 #include "events.h" /* for EVENTP */ |
| 38 #include "frame.h" | |
| 39 #include "insdel.h" | |
| 800 | 40 #include "line-number.h" |
| 872 | 41 #include "process.h" |
| 428 | 42 #include "window.h" |
| 43 | |
| 800 | 44 #include "sysdep.h" |
| 45 #include "sysdir.h" | |
| 46 #include "sysfile.h" | |
| 47 #include "sysproc.h" /* for qxe_getpid() */ | |
| 48 #include "syspwd.h" | |
| 428 | 49 #include "systime.h" |
| 50 | |
| 51 /* Some static data, and a function to initialize it for each run */ | |
| 52 | |
| 53 Lisp_Object Vsystem_name; /* #### - I don't see why this should be */ | |
| 54 /* static, either... --Stig */ | |
| 55 #if 0 /* XEmacs - this is now dynamic */ | |
| 56 /* if at some point it's deemed desirable to | |
| 57 use lisp variables here, then they can be | |
| 58 initialized to nil and then set to their | |
| 59 real values upon the first call to the | |
| 60 functions that generate them. --stig */ | |
| 61 Lisp_Object Vuser_real_login_name; /* login name of current user ID */ | |
| 62 Lisp_Object Vuser_login_name; /* user name from LOGNAME or USER. */ | |
| 63 #endif | |
| 64 | |
| 65 /* It's useful to be able to set this as user customization, so we'll | |
| 66 keep it. */ | |
| 67 Lisp_Object Vuser_full_name; | |
| 68 EXFUN (Fuser_full_name, 1); | |
| 69 | |
| 70 Lisp_Object Qformat; | |
| 71 | |
| 72 Lisp_Object Qpoint, Qmark, Qregion_beginning, Qregion_end; | |
| 73 | |
| 74 Lisp_Object Quser_files_and_directories; | |
| 75 | |
| 76 /* This holds the value of `environ' produced by the previous | |
| 77 call to Fset_time_zone_rule, or 0 if Fset_time_zone_rule | |
| 78 has never been called. */ | |
| 771 | 79 static Extbyte **environbuf; |
| 428 | 80 |
| 81 void | |
| 82 init_editfns (void) | |
| 83 { | |
| 84 /* Only used in removed code below. */ | |
| 867 | 85 Ibyte *p; |
| 428 | 86 |
| 87 environbuf = 0; | |
| 88 | |
| 89 /* Set up system_name even when dumping. */ | |
| 90 init_system_name (); | |
| 91 | |
| 92 if (!initialized) | |
| 93 return; | |
| 94 | |
| 771 | 95 if ((p = egetenv ("NAME"))) |
| 428 | 96 /* I don't think it's the right thing to do the ampersand |
| 97 modification on NAME. Not that it matters anymore... -hniksic */ | |
| 771 | 98 Vuser_full_name = build_intstring (p); |
| 428 | 99 else |
| 100 Vuser_full_name = Fuser_full_name (Qnil); | |
| 101 } | |
| 102 | |
| 103 DEFUN ("char-to-string", Fchar_to_string, 1, 1, 0, /* | |
| 444 | 104 Convert CHARACTER to a one-character string containing that character. |
| 428 | 105 */ |
| 444 | 106 (character)) |
| 428 | 107 { |
| 108 Bytecount len; | |
| 867 | 109 Ibyte str[MAX_ICHAR_LEN]; |
| 428 | 110 |
| 444 | 111 if (EVENTP (character)) |
| 428 | 112 { |
| 2862 | 113 Lisp_Object ch2 = Fevent_to_character (character, Qt, Qnil, Qnil); |
| 428 | 114 if (NILP (ch2)) |
| 563 | 115 invalid_argument |
| 2828 | 116 ("key has no character equivalent:", Fcopy_event (character, Qnil)); |
| 444 | 117 character = ch2; |
| 428 | 118 } |
| 119 | |
| 444 | 120 CHECK_CHAR_COERCE_INT (character); |
| 428 | 121 |
| 867 | 122 len = set_itext_ichar (str, XCHAR (character)); |
| 428 | 123 return make_string (str, len); |
| 124 } | |
| 125 | |
| 126 DEFUN ("string-to-char", Fstring_to_char, 1, 1, 0, /* | |
| 127 Convert arg STRING to a character, the first character of that string. | |
| 128 An empty string will return the constant `nil'. | |
| 129 */ | |
| 444 | 130 (string)) |
| 428 | 131 { |
| 444 | 132 CHECK_STRING (string); |
| 428 | 133 |
| 793 | 134 if (XSTRING_LENGTH (string) != 0) |
| 867 | 135 return make_char (string_ichar (string, 0)); |
| 428 | 136 else |
| 137 /* This used to return Qzero. That is broken, broken, broken. */ | |
| 138 /* It might be kinder to signal an error directly. -slb */ | |
| 139 return Qnil; | |
| 140 } | |
| 141 | |
| 142 | |
| 143 static Lisp_Object | |
| 665 | 144 buildmark (Charbpos val, Lisp_Object buffer) |
| 428 | 145 { |
| 146 Lisp_Object mark = Fmake_marker (); | |
| 147 Fset_marker (mark, make_int (val), buffer); | |
| 148 return mark; | |
| 149 } | |
| 150 | |
| 151 DEFUN ("point", Fpoint, 0, 1, 0, /* | |
| 152 Return value of point, as an integer. | |
| 153 Beginning of buffer is position (point-min). | |
| 154 If BUFFER is nil, the current buffer is assumed. | |
| 155 */ | |
| 156 (buffer)) | |
| 157 { | |
| 158 struct buffer *b = decode_buffer (buffer, 1); | |
| 159 return make_int (BUF_PT (b)); | |
| 160 } | |
| 161 | |
| 162 DEFUN ("point-marker", Fpoint_marker, 0, 2, 0, /* | |
| 163 Return value of point, as a marker object. | |
| 164 This marker is a copy; you may modify it with reckless abandon. | |
| 165 If optional argument DONT-COPY-P is non-nil, then it returns the real | |
| 166 point-marker; modifying the position of this marker will move point. | |
| 167 It is illegal to change the buffer of it, or make it point nowhere. | |
| 168 If BUFFER is nil, the current buffer is assumed. | |
| 169 */ | |
| 170 (dont_copy_p, buffer)) | |
| 171 { | |
| 172 struct buffer *b = decode_buffer (buffer, 1); | |
| 173 if (NILP (dont_copy_p)) | |
| 174 return Fcopy_marker (b->point_marker, Qnil); | |
| 175 else | |
| 176 return b->point_marker; | |
| 177 } | |
| 178 | |
| 179 /* | |
| 180 * Chuck says: | |
| 181 * There is no absolute way to determine if goto-char is the function | |
| 182 * being run. this-command doesn't work because it is often eval'd | |
| 183 * and this-command ends up set to eval-expression. So this flag gets | |
| 184 * added for now. | |
| 185 * | |
| 186 * Jamie thinks he's wrong, but we'll leave this in for now. | |
| 187 */ | |
| 188 int atomic_extent_goto_char_p; | |
| 189 | |
| 190 DEFUN ("goto-char", Fgoto_char, 1, 2, "NGoto char: ", /* | |
| 191 Set point to POSITION, a number or marker. | |
| 192 Beginning of buffer is position (point-min), end is (point-max). | |
| 193 If BUFFER is nil, the current buffer is assumed. | |
| 194 Return value of POSITION, as an integer. | |
| 195 */ | |
| 196 (position, buffer)) | |
| 197 { | |
| 198 struct buffer *b = decode_buffer (buffer, 1); | |
| 665 | 199 Charbpos n = get_buffer_pos_char (b, position, GB_COERCE_RANGE); |
| 428 | 200 BUF_SET_PT (b, n); |
| 201 atomic_extent_goto_char_p = 1; | |
| 202 return make_int (n); | |
| 203 } | |
| 204 | |
| 205 static Lisp_Object | |
| 206 region_limit (int beginningp, struct buffer *b) | |
| 207 { | |
| 208 Lisp_Object m; | |
| 209 | |
| 210 #if 0 /* FSFmacs */ | |
| 211 if (!NILP (Vtransient_mark_mode) && NILP (Vmark_even_if_inactive) | |
| 212 && NILP (b->mark_active)) | |
| 213 Fsignal (Qmark_inactive, Qnil); | |
| 214 #endif | |
| 215 m = Fmarker_position (b->mark); | |
| 563 | 216 if (NILP (m)) invalid_operation ("There is no region now", Qunbound); |
| 428 | 217 if (!!(BUF_PT (b) < XINT (m)) == !!beginningp) |
| 218 return make_int (BUF_PT (b)); | |
| 219 else | |
| 220 return m; | |
| 221 } | |
| 222 | |
| 223 DEFUN ("region-beginning", Fregion_beginning, 0, 1, 0, /* | |
| 224 Return position of beginning of region in BUFFER, as an integer. | |
| 225 If BUFFER is nil, the current buffer is assumed. | |
| 226 */ | |
| 227 (buffer)) | |
| 228 { | |
| 229 return region_limit (1, decode_buffer (buffer, 1)); | |
| 230 } | |
| 231 | |
| 232 DEFUN ("region-end", Fregion_end, 0, 1, 0, /* | |
| 233 Return position of end of region in BUFFER, as an integer. | |
| 234 If BUFFER is nil, the current buffer is assumed. | |
| 235 */ | |
| 236 (buffer)) | |
| 237 { | |
| 238 return region_limit (0, decode_buffer (buffer, 1)); | |
| 239 } | |
| 240 | |
| 241 /* Whether to use lispm-style active-regions */ | |
| 242 int zmacs_regions; | |
| 243 | |
| 244 /* Whether the zmacs region is active. This is not per-buffer because | |
| 245 there can be only one active region at a time. #### Now that the | |
| 246 zmacs region are not directly tied to the X selections this may not | |
| 247 necessarily have to be true. */ | |
| 248 int zmacs_region_active_p; | |
| 249 | |
| 250 int zmacs_region_stays; | |
| 251 | |
| 252 Lisp_Object Qzmacs_update_region, Qzmacs_deactivate_region; | |
| 253 Lisp_Object Qzmacs_region_buffer; | |
| 254 | |
| 255 void | |
| 256 zmacs_update_region (void) | |
| 257 { | |
| 258 /* This function can GC */ | |
| 259 if (zmacs_region_active_p) | |
| 260 call0 (Qzmacs_update_region); | |
| 261 } | |
| 262 | |
| 263 void | |
| 264 zmacs_deactivate_region (void) | |
| 265 { | |
| 266 /* This function can GC */ | |
| 267 if (zmacs_region_active_p) | |
| 268 call0 (Qzmacs_deactivate_region); | |
| 269 } | |
| 270 | |
| 271 Lisp_Object | |
| 272 zmacs_region_buffer (void) | |
| 273 { | |
| 274 if (zmacs_region_active_p) | |
| 275 return call0 (Qzmacs_region_buffer); | |
| 276 else | |
| 277 return Qnil; | |
| 278 } | |
| 279 | |
| 280 DEFUN ("mark-marker", Fmark_marker, 0, 2, 0, /* | |
| 281 Return this buffer's mark, as a marker object. | |
| 282 If `zmacs-regions' is true, then this returns nil unless the region is | |
| 283 currently in the active (highlighted) state. If optional argument FORCE | |
| 284 is t, this returns the mark (if there is one) regardless of the zmacs-region | |
| 285 state. You should *generally* not use the mark unless the region is active, | |
| 286 if the user has expressed a preference for the zmacs-region model. | |
| 287 Watch out! Moving this marker changes the mark position. | |
| 288 If you set the marker not to point anywhere, the buffer will have no mark. | |
| 289 If BUFFER is nil, the current buffer is assumed. | |
| 290 */ | |
| 291 (force, buffer)) | |
| 292 { | |
| 293 struct buffer *b = decode_buffer (buffer, 1); | |
| 294 if (! zmacs_regions || zmacs_region_active_p || !NILP (force)) | |
| 295 return b->mark; | |
| 296 return Qnil; | |
| 297 } | |
| 298 | |
| 299 | |
| 300 /* The saved object is a cons: | |
| 301 | |
| 302 (COPY-OF-POINT-MARKER . COPY-OF-MARK) | |
| 303 | |
| 304 We used to have another cons for a VISIBLE-P element, which was t | |
| 305 if `(eq (current-buffer) (window-buffer (selected-window)))' but it | |
| 306 was unused for a long time, so I removed it. --hniksic */ | |
| 307 Lisp_Object | |
| 308 save_excursion_save (void) | |
| 309 { | |
| 310 struct buffer *b; | |
| 311 | |
| 853 | 312 /* There was once a check for preparing_for_armageddon here, which |
| 313 did nothing; perhaps a left-over from FSF Emacs. Obviously | |
| 314 incorrect. --ben */ | |
| 428 | 315 |
| 800 | 316 #ifdef ERROR_CHECK_TEXT |
| 428 | 317 assert (XINT (Fpoint (Qnil)) == |
| 318 XINT (Fmarker_position (Fpoint_marker (Qt, Qnil)))); | |
| 319 #endif | |
| 320 | |
| 321 b = current_buffer; | |
| 322 | |
| 323 return noseeum_cons (noseeum_copy_marker (b->point_marker, Qnil), | |
| 324 noseeum_copy_marker (b->mark, Qnil)); | |
| 325 } | |
| 326 | |
| 327 Lisp_Object | |
| 328 save_excursion_restore (Lisp_Object info) | |
| 329 { | |
| 330 Lisp_Object buffer = Fmarker_buffer (XCAR (info)); | |
| 331 | |
| 332 /* If buffer being returned to is now deleted, avoid error -- | |
| 333 otherwise could get error here while unwinding to top level and | |
| 334 crash. In that case, Fmarker_buffer returns nil now. */ | |
| 335 if (!NILP (buffer)) | |
| 336 { | |
| 337 struct buffer *buf = XBUFFER (buffer); | |
| 338 struct gcpro gcpro1; | |
| 339 GCPRO1 (info); | |
| 340 set_buffer_internal (buf); | |
| 341 Fgoto_char (XCAR (info), buffer); | |
| 342 Fset_marker (buf->mark, XCDR (info), buffer); | |
| 343 | |
| 344 #if 0 /* We used to make the current buffer visible in the selected window | |
| 345 if that was true previously. That avoids some anomalies. | |
| 346 But it creates others, and it wasn't documented, and it is simpler | |
| 347 and cleaner never to alter the window/buffer connections. */ | |
| 348 /* I'm certain some code somewhere depends on this behavior. --jwz */ | |
| 349 /* Even if it did, it certainly doesn't matter anymore, because | |
| 350 this has been the behavior for countless XEmacs releases | |
| 351 now. --hniksic */ | |
| 352 if (visible | |
| 353 && (current_buffer != XBUFFER (XWINDOW (selected_window)->buffer))) | |
| 354 switch_to_buffer (Fcurrent_buffer (), Qnil); | |
| 355 #endif | |
| 356 | |
| 357 UNGCPRO; | |
| 358 } | |
| 359 | |
| 360 /* Free all the junk we allocated, so that a `save-excursion' comes | |
| 361 for free in terms of GC junk. */ | |
| 1204 | 362 free_marker (XCAR (info)); |
| 363 free_marker (XCDR (info)); | |
| 853 | 364 free_cons (info); |
| 428 | 365 return Qnil; |
| 366 } | |
| 367 | |
| 368 DEFUN ("save-excursion", Fsave_excursion, 0, UNEVALLED, 0, /* | |
| 369 Save point, mark, and current buffer; execute BODY; restore those things. | |
| 370 Executes BODY just like `progn'. | |
| 371 The values of point, mark and the current buffer are restored | |
| 372 even in case of abnormal exit (throw or error). | |
| 373 */ | |
| 374 (args)) | |
| 375 { | |
| 376 /* This function can GC */ | |
| 377 int speccount = specpdl_depth (); | |
| 378 | |
| 379 record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
| 380 | |
| 771 | 381 return unbind_to_1 (speccount, Fprogn (args)); |
| 428 | 382 } |
| 383 | |
| 384 Lisp_Object | |
| 385 save_current_buffer_restore (Lisp_Object buffer) | |
| 386 { | |
| 387 struct buffer *buf = XBUFFER (buffer); | |
| 388 /* Avoid signaling an error if the buffer is no longer alive. This | |
| 389 is for consistency with save-excursion. */ | |
| 390 if (BUFFER_LIVE_P (buf)) | |
| 391 set_buffer_internal (buf); | |
| 392 return Qnil; | |
| 393 } | |
| 394 | |
| 395 DEFUN ("save-current-buffer", Fsave_current_buffer, 0, UNEVALLED, 0, /* | |
| 396 Save the current buffer; execute BODY; restore the current buffer. | |
| 397 Executes BODY just like `progn'. | |
| 398 */ | |
| 399 (args)) | |
| 400 { | |
| 401 /* This function can GC */ | |
| 402 int speccount = specpdl_depth (); | |
| 403 | |
| 404 record_unwind_protect (save_current_buffer_restore, Fcurrent_buffer ()); | |
| 405 | |
| 771 | 406 return unbind_to_1 (speccount, Fprogn (args)); |
| 428 | 407 } |
| 408 | |
| 409 DEFUN ("buffer-size", Fbuffer_size, 0, 1, 0, /* | |
| 410 Return the number of characters in BUFFER. | |
| 411 If BUFFER is nil, the current buffer is assumed. | |
| 412 */ | |
| 413 (buffer)) | |
| 414 { | |
| 415 struct buffer *b = decode_buffer (buffer, 1); | |
| 416 return make_int (BUF_SIZE (b)); | |
| 417 } | |
| 418 | |
| 419 DEFUN ("point-min", Fpoint_min, 0, 1, 0, /* | |
| 420 Return the minimum permissible value of point in BUFFER. | |
| 434 | 421 This is 1, unless narrowing (a buffer restriction) |
| 422 is in effect, in which case it may be greater. | |
| 428 | 423 If BUFFER is nil, the current buffer is assumed. |
| 424 */ | |
| 425 (buffer)) | |
| 426 { | |
| 427 struct buffer *b = decode_buffer (buffer, 1); | |
| 428 return make_int (BUF_BEGV (b)); | |
| 429 } | |
| 430 | |
| 431 DEFUN ("point-min-marker", Fpoint_min_marker, 0, 1, 0, /* | |
| 432 Return a marker to the minimum permissible value of point in BUFFER. | |
| 434 | 433 This is the beginning, unless narrowing (a buffer restriction) |
| 434 is in effect, in which case it may be greater. | |
| 428 | 435 If BUFFER is nil, the current buffer is assumed. |
| 436 */ | |
| 437 (buffer)) | |
| 438 { | |
| 439 struct buffer *b = decode_buffer (buffer, 1); | |
| 771 | 440 return buildmark (BUF_BEGV (b), wrap_buffer (b)); |
| 428 | 441 } |
| 442 | |
| 443 DEFUN ("point-max", Fpoint_max, 0, 1, 0, /* | |
| 444 Return the maximum permissible value of point in BUFFER. | |
| 445 This is (1+ (buffer-size)), unless narrowing (a buffer restriction) | |
| 434 | 446 is in effect, in which case it may be less. |
| 428 | 447 If BUFFER is nil, the current buffer is assumed. |
| 448 */ | |
| 449 (buffer)) | |
| 450 { | |
| 451 struct buffer *b = decode_buffer (buffer, 1); | |
| 452 return make_int (BUF_ZV (b)); | |
| 453 } | |
| 454 | |
| 455 DEFUN ("point-max-marker", Fpoint_max_marker, 0, 1, 0, /* | |
| 434 | 456 Return a marker to the maximum permissible value of point in BUFFER. |
| 428 | 457 This is (1+ (buffer-size)), unless narrowing (a buffer restriction) |
| 434 | 458 is in effect, in which case it may be less. |
| 428 | 459 If BUFFER is nil, the current buffer is assumed. |
| 460 */ | |
| 461 (buffer)) | |
| 462 { | |
| 463 struct buffer *b = decode_buffer (buffer, 1); | |
| 771 | 464 return buildmark (BUF_ZV (b), wrap_buffer (b)); |
| 428 | 465 } |
| 466 | |
| 467 DEFUN ("following-char", Ffollowing_char, 0, 1, 0, /* | |
| 468 Return the character following point. | |
| 469 At the end of the buffer or accessible region, return 0. | |
| 470 If BUFFER is nil, the current buffer is assumed. | |
| 471 */ | |
| 472 (buffer)) | |
| 473 { | |
| 474 struct buffer *b = decode_buffer (buffer, 1); | |
| 475 if (BUF_PT (b) >= BUF_ZV (b)) | |
| 476 return Qzero; /* #### Gag me! */ | |
| 477 else | |
| 478 return make_char (BUF_FETCH_CHAR (b, BUF_PT (b))); | |
| 479 } | |
| 480 | |
| 481 DEFUN ("preceding-char", Fpreceding_char, 0, 1, 0, /* | |
| 482 Return the character preceding point. | |
| 483 At the beginning of the buffer or accessible region, return 0. | |
| 484 If BUFFER is nil, the current buffer is assumed. | |
| 485 */ | |
| 486 (buffer)) | |
| 487 { | |
| 488 struct buffer *b = decode_buffer (buffer, 1); | |
| 489 if (BUF_PT (b) <= BUF_BEGV (b)) | |
| 490 return Qzero; /* #### Gag me! */ | |
| 491 else | |
| 492 return make_char (BUF_FETCH_CHAR (b, BUF_PT (b) - 1)); | |
| 493 } | |
| 494 | |
| 495 DEFUN ("bobp", Fbobp, 0, 1, 0, /* | |
| 496 Return t if point is at the beginning of the buffer. | |
| 497 If the buffer is narrowed, this means the beginning of the narrowed part. | |
| 498 If BUFFER is nil, the current buffer is assumed. | |
| 499 */ | |
| 500 (buffer)) | |
| 501 { | |
| 502 struct buffer *b = decode_buffer (buffer, 1); | |
| 503 return BUF_PT (b) == BUF_BEGV (b) ? Qt : Qnil; | |
| 504 } | |
| 505 | |
| 506 DEFUN ("eobp", Feobp, 0, 1, 0, /* | |
| 507 Return t if point is at the end of the buffer. | |
| 508 If the buffer is narrowed, this means the end of the narrowed part. | |
| 509 If BUFFER is nil, the current buffer is assumed. | |
| 510 */ | |
| 511 (buffer)) | |
| 512 { | |
| 513 struct buffer *b = decode_buffer (buffer, 1); | |
| 514 return BUF_PT (b) == BUF_ZV (b) ? Qt : Qnil; | |
| 515 } | |
| 516 | |
| 517 int | |
| 665 | 518 beginning_of_line_p (struct buffer *b, Charbpos pt) |
| 428 | 519 { |
| 520 return pt <= BUF_BEGV (b) || BUF_FETCH_CHAR (b, pt - 1) == '\n'; | |
| 521 } | |
| 522 | |
| 523 | |
| 524 DEFUN ("bolp", Fbolp, 0, 1, 0, /* | |
| 525 Return t if point is at the beginning of a line. | |
| 526 If BUFFER is nil, the current buffer is assumed. | |
| 527 */ | |
| 528 (buffer)) | |
| 529 { | |
| 530 struct buffer *b = decode_buffer (buffer, 1); | |
| 531 return beginning_of_line_p (b, BUF_PT (b)) ? Qt : Qnil; | |
| 532 } | |
| 533 | |
| 534 DEFUN ("eolp", Feolp, 0, 1, 0, /* | |
| 535 Return t if point is at the end of a line. | |
| 536 `End of a line' includes point being at the end of the buffer. | |
| 537 If BUFFER is nil, the current buffer is assumed. | |
| 538 */ | |
| 539 (buffer)) | |
| 540 { | |
| 541 struct buffer *b = decode_buffer (buffer, 1); | |
| 542 return (BUF_PT (b) == BUF_ZV (b) || BUF_FETCH_CHAR (b, BUF_PT (b)) == '\n') | |
| 543 ? Qt : Qnil; | |
| 544 } | |
| 545 | |
| 546 DEFUN ("char-after", Fchar_after, 0, 2, 0, /* | |
| 434 | 547 Return the character at position POS in BUFFER. |
| 548 POS is an integer or a marker. | |
| 428 | 549 If POS is out of range, the value is nil. |
| 434 | 550 if POS is nil, the value of point is assumed. |
| 428 | 551 If BUFFER is nil, the current buffer is assumed. |
| 552 */ | |
| 553 (pos, buffer)) | |
| 554 { | |
| 555 struct buffer *b = decode_buffer (buffer, 1); | |
| 665 | 556 Charbpos n = (NILP (pos) ? BUF_PT (b) : |
| 428 | 557 get_buffer_pos_char (b, pos, GB_NO_ERROR_IF_BAD)); |
| 558 | |
| 559 if (n < 0 || n == BUF_ZV (b)) | |
| 560 return Qnil; | |
| 561 return make_char (BUF_FETCH_CHAR (b, n)); | |
| 562 } | |
| 563 | |
| 564 DEFUN ("char-before", Fchar_before, 0, 2, 0, /* | |
| 434 | 565 Return the character preceding position POS in BUFFER. |
| 566 POS is an integer or a marker. | |
| 428 | 567 If POS is out of range, the value is nil. |
| 434 | 568 if POS is nil, the value of point is assumed. |
| 428 | 569 If BUFFER is nil, the current buffer is assumed. |
| 570 */ | |
| 571 (pos, buffer)) | |
| 572 { | |
| 573 struct buffer *b = decode_buffer (buffer, 1); | |
| 665 | 574 Charbpos n = (NILP (pos) ? BUF_PT (b) : |
| 434 | 575 get_buffer_pos_char (b, pos, GB_NO_ERROR_IF_BAD)); |
| 428 | 576 |
| 577 n--; | |
| 578 | |
| 579 if (n < BUF_BEGV (b)) | |
| 580 return Qnil; | |
| 581 return make_char (BUF_FETCH_CHAR (b, n)); | |
| 582 } | |
| 583 | |
| 584 | |
| 585 DEFUN ("temp-directory", Ftemp_directory, 0, 0, 0, /* | |
| 586 Return the pathname to the directory to use for temporary files. | |
| 442 | 587 On MS Windows, this is obtained from the TEMP or TMP environment variables, |
| 771 | 588 defaulting to c:\\ if they are both undefined. |
| 444 | 589 On Unix it is obtained from TMPDIR, with /tmp as the default. |
| 428 | 590 */ |
| 591 ()) | |
| 592 { | |
| 867 | 593 Ibyte *tmpdir; |
| 442 | 594 #if defined(WIN32_NATIVE) |
| 771 | 595 tmpdir = egetenv ("TEMP"); |
| 428 | 596 if (!tmpdir) |
| 771 | 597 tmpdir = egetenv ("TMP"); |
| 428 | 598 if (!tmpdir) |
| 867 | 599 tmpdir = (Ibyte *) "c:\\"; |
| 442 | 600 #else /* WIN32_NATIVE */ |
| 771 | 601 tmpdir = egetenv ("TMPDIR"); |
| 428 | 602 if (!tmpdir) |
| 442 | 603 { |
| 604 struct stat st; | |
| 771 | 605 int myuid = getuid (); |
| 867 | 606 Ibyte *login_name = user_login_name (NULL); |
| 771 | 607 DECLARE_EISTRING (eipath); |
| 867 | 608 Ibyte *path; |
| 442 | 609 |
| 2421 | 610 eicpy_ascii (eipath, "/tmp/"); |
| 771 | 611 eicat_rawz (eipath, login_name); |
| 612 path = eidata (eipath); | |
| 613 if (qxe_lstat (path, &st) < 0 && errno == ENOENT) | |
| 614 qxe_mkdir (path, 0700); /* ignore retval -- checked next anyway. */ | |
| 615 if (qxe_lstat (path, &st) == 0 && (int) st.st_uid == myuid | |
| 616 && S_ISDIR (st.st_mode)) | |
| 617 tmpdir = path; | |
| 442 | 618 else |
| 619 { | |
| 771 | 620 eicpy_rawz (eipath, egetenv ("HOME")); |
| 2421 | 621 eicat_ascii (eipath, "/tmp/"); |
| 771 | 622 path = eidata (eipath); |
| 623 if (qxe_stat (path, &st) < 0 && errno == ENOENT) | |
| 442 | 624 { |
| 625 int fd; | |
| 771 | 626 DECLARE_EISTRING (eiwarnpath); |
| 627 | |
| 628 qxe_mkdir (path, 0700); /* ignore retvals */ | |
| 629 eicpy_ei (eiwarnpath, eipath); | |
| 2421 | 630 eicat_ascii (eiwarnpath, ".created_by_xemacs"); |
| 771 | 631 if ((fd = qxe_open (eidata (eiwarnpath), |
| 632 O_WRONLY | O_CREAT, 0644)) > 0) | |
| 442 | 633 { |
| 771 | 634 retry_write (fd, "XEmacs created this directory because " |
| 635 "/tmp/<yourname> was unavailable -- \n" | |
| 636 "Please check !\n", 89); | |
| 637 retry_close (fd); | |
| 442 | 638 } |
| 639 } | |
| 771 | 640 if (qxe_stat (path, &st) == 0 && S_ISDIR (st.st_mode)) |
| 641 tmpdir = path; | |
| 442 | 642 else |
| 867 | 643 tmpdir = (Ibyte *) "/tmp"; |
| 442 | 644 } |
| 645 } | |
| 428 | 646 #endif |
| 647 | |
| 771 | 648 return build_intstring (tmpdir); |
| 428 | 649 } |
| 650 | |
| 651 DEFUN ("user-login-name", Fuser_login_name, 0, 1, 0, /* | |
| 652 Return the name under which the user logged in, as a string. | |
| 653 This is based on the effective uid, not the real uid. | |
| 654 Also, if the environment variable LOGNAME or USER is set, | |
| 655 that determines the value of this function. | |
| 656 If the optional argument UID is present, then environment variables are | |
| 657 ignored and this function returns the login name for that UID, or nil. | |
| 658 */ | |
| 659 (uid)) | |
| 660 { | |
| 867 | 661 Ibyte *returned_name; |
| 428 | 662 uid_t local_uid; |
| 663 | |
| 664 if (!NILP (uid)) | |
| 665 { | |
| 666 CHECK_INT (uid); | |
| 667 local_uid = XINT (uid); | |
| 668 returned_name = user_login_name (&local_uid); | |
| 669 } | |
| 670 else | |
| 671 { | |
| 672 returned_name = user_login_name (NULL); | |
| 673 } | |
| 674 /* #### - I believe this should return nil instead of "unknown" when pw==0 | |
| 675 pw=0 is indicated by a null return from user_login_name | |
| 676 */ | |
| 771 | 677 return returned_name ? build_intstring (returned_name) : Qnil; |
| 428 | 678 } |
| 679 | |
| 680 /* This function may be called from other C routines when a | |
| 681 character string representation of the user_login_name is | |
| 682 needed but a Lisp Object is not. The UID is passed by | |
| 683 reference. If UID == NULL, then the USER name | |
| 684 for the user running XEmacs will be returned. This | |
| 685 corresponds to a nil argument to Fuser_login_name. | |
| 771 | 686 |
| 793 | 687 WARNING: The string returned comes from the data of a Lisp string and |
| 771 | 688 therefore will become garbage after the next GC. |
| 428 | 689 */ |
| 867 | 690 Ibyte * |
| 428 | 691 user_login_name (uid_t *uid) |
| 692 { | |
| 693 /* uid == NULL to return name of this user */ | |
| 694 if (uid != NULL) | |
| 695 { | |
| 771 | 696 struct passwd *pw = qxe_getpwuid (*uid); |
| 867 | 697 return pw ? (Ibyte *) pw->pw_name : NULL; |
| 428 | 698 } |
| 699 else | |
| 700 { | |
| 701 /* #### - when euid != uid, then LOGNAME and USER are leftovers from the | |
| 702 old environment (I site observed behavior on sunos and linux), so the | |
| 703 environment variables should be disregarded in that case. --Stig */ | |
| 867 | 704 Ibyte *user_name = egetenv ("LOGNAME"); |
| 428 | 705 if (!user_name) |
| 771 | 706 user_name = egetenv ( |
| 442 | 707 #ifdef WIN32_NATIVE |
| 428 | 708 "USERNAME" /* it's USERNAME on NT */ |
| 709 #else | |
| 710 "USER" | |
| 711 #endif | |
| 712 ); | |
| 713 if (user_name) | |
| 771 | 714 return user_name; |
| 428 | 715 else |
| 716 { | |
| 771 | 717 struct passwd *pw = qxe_getpwuid (geteuid ()); |
| 442 | 718 #ifdef CYGWIN |
| 428 | 719 /* Since the Cygwin environment may not have an /etc/passwd, |
| 720 return "unknown" instead of the null if the username | |
| 721 cannot be determined. | |
| 722 */ | |
| 593 | 723 /* !!#### fix up in my mule ws */ |
| 867 | 724 return (Ibyte *) (pw ? pw->pw_name : "unknown"); |
| 428 | 725 #else |
| 726 /* For all but Cygwin return NULL (nil) */ | |
| 1204 | 727 return pw ? (Ibyte *) pw->pw_name : NULL; |
| 428 | 728 #endif |
| 729 } | |
| 730 } | |
| 731 } | |
| 732 | |
| 733 DEFUN ("user-real-login-name", Fuser_real_login_name, 0, 0, 0, /* | |
| 734 Return the name of the user's real uid, as a string. | |
| 735 This ignores the environment variables LOGNAME and USER, so it differs from | |
| 736 `user-login-name' when running under `su'. | |
| 737 */ | |
| 738 ()) | |
| 739 { | |
| 771 | 740 struct passwd *pw = qxe_getpwuid (getuid ()); |
| 428 | 741 /* #### - I believe this should return nil instead of "unknown" when pw==0 */ |
| 742 | |
| 793 | 743 return build_string (pw ? pw->pw_name : "unknown"); |
| 428 | 744 } |
| 745 | |
| 746 DEFUN ("user-uid", Fuser_uid, 0, 0, 0, /* | |
| 747 Return the effective uid of Emacs, as an integer. | |
| 748 */ | |
| 749 ()) | |
| 750 { | |
| 751 return make_int (geteuid ()); | |
| 752 } | |
| 753 | |
| 754 DEFUN ("user-real-uid", Fuser_real_uid, 0, 0, 0, /* | |
| 755 Return the real uid of Emacs, as an integer. | |
| 756 */ | |
| 757 ()) | |
| 758 { | |
| 759 return make_int (getuid ()); | |
| 760 } | |
| 761 | |
| 762 DEFUN ("user-full-name", Fuser_full_name, 0, 1, 0, /* | |
| 763 Return the full name of the user logged in, as a string. | |
| 764 If the optional argument USER is given, then the full name for that | |
| 765 user is returned, or nil. USER may be either a login name or a uid. | |
| 766 | |
| 767 If USER is nil, and `user-full-name' contains a string, the | |
| 768 value of `user-full-name' is returned. | |
| 769 */ | |
| 770 (user)) | |
| 771 { | |
| 772 Lisp_Object user_name; | |
| 773 struct passwd *pw = NULL; | |
| 774 Lisp_Object tem; | |
| 867 | 775 const Ibyte *p, *q; |
| 428 | 776 |
| 777 if (NILP (user) && STRINGP (Vuser_full_name)) | |
| 778 return Vuser_full_name; | |
| 779 | |
| 780 user_name = (STRINGP (user) ? user : Fuser_login_name (user)); | |
| 781 if (!NILP (user_name)) /* nil when nonexistent UID passed as arg */ | |
| 782 { | |
| 783 /* Fuck me. getpwnam() can call select() and (under IRIX at least) | |
| 784 things get wedged if a SIGIO arrives during this time. */ | |
| 785 slow_down_interrupts (); | |
| 771 | 786 pw = qxe_getpwnam (XSTRING_DATA (user_name)); |
| 428 | 787 speed_up_interrupts (); |
| 788 } | |
| 789 | |
| 790 /* #### - Stig sez: this should return nil instead of "unknown" when pw==0 */ | |
| 791 /* Ben sez: bad idea because it's likely to break something */ | |
| 792 #ifndef AMPERSAND_FULL_NAME | |
| 867 | 793 p = (Ibyte *) (pw ? USER_FULL_NAME : "unknown"); /* don't gettext */ |
| 771 | 794 q = qxestrchr (p, ','); |
| 428 | 795 #else |
| 867 | 796 p = (Ibyte *) (pw ? USER_FULL_NAME : "unknown"); /* don't gettext */ |
| 771 | 797 q = qxestrchr (p, ','); |
| 428 | 798 #endif |
| 799 tem = ((!NILP (user) && !pw) | |
| 800 ? Qnil | |
| 814 | 801 : make_string (p, (q ? (Bytecount) (q - p) : qxestrlen (p)))); |
| 428 | 802 |
| 803 #ifdef AMPERSAND_FULL_NAME | |
| 804 if (!NILP (tem)) | |
| 805 { | |
| 771 | 806 p = XSTRING_DATA (tem); |
| 807 q = qxestrchr (p, '&'); | |
| 428 | 808 /* Substitute the login name for the &, upcasing the first character. */ |
| 809 if (q) | |
| 810 { | |
| 771 | 811 DECLARE_EISTRING (r); |
| 812 eicpy_raw (r, p, q - p); | |
| 813 eicat_lstr (r, user_name); | |
| 814 eisetch (r, q - p, UPCASE (0, eigetch (r, q - p))); | |
| 815 eicat_rawz (r, q + 1); | |
| 816 tem = eimake_string (r); | |
| 428 | 817 } |
| 818 } | |
| 819 #endif /* AMPERSAND_FULL_NAME */ | |
| 820 | |
| 821 return tem; | |
| 822 } | |
| 823 | |
| 867 | 824 static Ibyte *cached_home_directory; |
| 428 | 825 |
| 826 void | |
| 827 uncache_home_directory (void) | |
| 828 { | |
| 771 | 829 if (cached_home_directory) |
| 1726 | 830 xfree (cached_home_directory, Ibyte *); |
| 771 | 831 cached_home_directory = NULL; |
| 428 | 832 } |
| 833 | |
| 771 | 834 /* Returns the home directory */ |
| 867 | 835 Ibyte * |
| 428 | 836 get_home_directory (void) |
| 837 { | |
| 838 int output_home_warning = 0; | |
| 839 | |
| 840 if (cached_home_directory == NULL) | |
| 841 { | |
| 771 | 842 cached_home_directory = egetenv ("HOME"); |
| 843 if (cached_home_directory) | |
| 844 cached_home_directory = qxestrdup (cached_home_directory); | |
| 845 else | |
| 428 | 846 { |
| 771 | 847 #if defined (WIN32_NATIVE) |
| 867 | 848 Ibyte *homedrive, *homepath; |
| 428 | 849 |
| 771 | 850 if ((homedrive = egetenv ("HOMEDRIVE")) != NULL && |
| 851 (homepath = egetenv ("HOMEPATH")) != NULL) | |
| 428 | 852 { |
| 853 cached_home_directory = | |
| 2367 | 854 xnew_ibytes (qxestrlen (homedrive) + qxestrlen (homepath) + |
| 855 ITEXT_ZTERM_SIZE); | |
| 771 | 856 qxesprintf (cached_home_directory, "%s%s", |
| 857 homedrive, | |
| 858 homepath); | |
| 428 | 859 } |
| 860 else | |
| 861 { | |
| 867 | 862 cached_home_directory = qxestrdup ((Ibyte *) "C:\\"); |
| 428 | 863 output_home_warning = 1; |
| 864 } | |
| 442 | 865 #else /* !WIN32_NATIVE */ |
| 428 | 866 /* |
| 867 * Unix, typically. | |
| 868 * Using "/" isn't quite right, but what should we do? | |
| 869 * We probably should try to extract pw_dir from /etc/passwd, | |
| 870 * before falling back to this. | |
| 871 */ | |
| 867 | 872 cached_home_directory = qxestrdup ((Ibyte *) "/"); |
| 428 | 873 output_home_warning = 1; |
| 442 | 874 #endif /* !WIN32_NATIVE */ |
| 428 | 875 } |
| 876 if (initialized && output_home_warning) | |
| 877 { | |
| 878 warn_when_safe (Quser_files_and_directories, Qwarning, "\n" | |
| 879 " XEmacs was unable to determine a good value for the user's $HOME\n" | |
| 880 " directory, and will be using the value:\n" | |
| 881 " %s\n" | |
| 882 " This is probably incorrect.", | |
| 883 cached_home_directory | |
| 884 ); | |
| 885 } | |
| 886 } | |
| 887 return cached_home_directory; | |
| 888 } | |
| 889 | |
| 890 DEFUN ("user-home-directory", Fuser_home_directory, 0, 0, 0, /* | |
| 891 Return the user's home directory, as a string. | |
| 892 */ | |
| 893 ()) | |
| 894 { | |
| 867 | 895 Ibyte *path = get_home_directory (); |
| 428 | 896 |
| 771 | 897 return !path ? Qnil : |
| 898 Fexpand_file_name (Fsubstitute_in_file_name (build_intstring (path)), | |
| 428 | 899 Qnil); |
| 900 } | |
| 901 | |
| 902 DEFUN ("system-name", Fsystem_name, 0, 0, 0, /* | |
| 903 Return the name of the machine you are running on, as a string. | |
| 904 */ | |
| 905 ()) | |
| 906 { | |
| 771 | 907 return Fcopy_sequence (Vsystem_name); |
| 428 | 908 } |
| 909 | |
| 910 DEFUN ("emacs-pid", Femacs_pid, 0, 0, 0, /* | |
| 911 Return the process ID of Emacs, as an integer. | |
| 912 */ | |
| 913 ()) | |
| 914 { | |
| 771 | 915 return make_int (qxe_getpid ()); |
| 428 | 916 } |
| 917 | |
| 918 DEFUN ("current-time", Fcurrent_time, 0, 0, 0, /* | |
| 919 Return the current time, as the number of seconds since 1970-01-01 00:00:00. | |
| 920 The time is returned as a list of three integers. The first has the | |
| 921 most significant 16 bits of the seconds, while the second has the | |
| 922 least significant 16 bits. The third integer gives the microsecond | |
| 923 count. | |
| 924 | |
| 925 The microsecond count is zero on systems that do not provide | |
| 926 resolution finer than a second. | |
| 927 */ | |
| 928 ()) | |
| 929 { | |
| 930 EMACS_TIME t; | |
| 931 | |
| 932 EMACS_GET_TIME (t); | |
| 933 return list3 (make_int ((EMACS_SECS (t) >> 16) & 0xffff), | |
| 934 make_int ((EMACS_SECS (t) >> 0) & 0xffff), | |
| 935 make_int (EMACS_USECS (t))); | |
| 936 } | |
| 937 | |
| 938 DEFUN ("current-process-time", Fcurrent_process_time, 0, 0, 0, /* | |
| 939 Return the amount of time used by this XEmacs process so far. | |
| 940 The return value is a list of three floating-point numbers, expressing | |
| 941 the user, system, and real times used by the process. The user time | |
| 942 measures the time actually spent by the CPU executing the code in this | |
| 943 process. The system time measures time spent by the CPU executing kernel | |
| 944 code on behalf of this process (e.g. I/O requests made by the process). | |
| 945 | |
| 946 Note that the user and system times measure processor time, as opposed | |
| 947 to real time, and only accrue when the processor is actually doing | |
| 948 something: Time spent in an idle wait (waiting for user events to come | |
| 949 in or for I/O on a disk drive or other device to complete) does not | |
| 950 count. Thus, the user and system times will often be considerably | |
| 951 less than the real time. | |
| 952 | |
| 953 Some systems do not allow the user and system times to be distinguished. | |
| 954 In this case, the user time will be the total processor time used by | |
| 955 the process, and the system time will be 0. | |
| 956 | |
| 957 Some systems do not allow the real and processor times to be distinguished. | |
| 958 In this case, the user and real times will be the same and the system | |
| 959 time will be 0. | |
| 960 */ | |
| 961 ()) | |
| 962 { | |
| 963 double user, sys, real; | |
| 964 | |
| 965 get_process_times (&user, &sys, &real); | |
| 966 return list3 (make_float (user), make_float (sys), make_float (real)); | |
| 967 } | |
| 968 | |
| 969 | |
| 970 int lisp_to_time (Lisp_Object specified_time, time_t *result); | |
| 971 int | |
| 972 lisp_to_time (Lisp_Object specified_time, time_t *result) | |
| 973 { | |
| 974 Lisp_Object high, low; | |
| 975 | |
| 976 if (NILP (specified_time)) | |
| 977 return time (result) != -1; | |
| 978 | |
| 979 CHECK_CONS (specified_time); | |
| 980 high = XCAR (specified_time); | |
| 981 low = XCDR (specified_time); | |
| 982 if (CONSP (low)) | |
| 983 low = XCAR (low); | |
| 984 CHECK_INT (high); | |
| 985 CHECK_INT (low); | |
| 986 *result = (XINT (high) << 16) + (XINT (low) & 0xffff); | |
| 987 return *result >> 16 == XINT (high); | |
| 988 } | |
| 989 | |
| 990 Lisp_Object time_to_lisp (time_t the_time); | |
| 991 Lisp_Object | |
| 992 time_to_lisp (time_t the_time) | |
| 993 { | |
| 994 unsigned int item = (unsigned int) the_time; | |
| 995 return Fcons (make_int (item >> 16), make_int (item & 0xffff)); | |
| 996 } | |
| 997 | |
| 771 | 998 size_t emacs_strftime (Extbyte *string, size_t max, const Extbyte *format, |
| 442 | 999 const struct tm *tm); |
| 1000 static long difftm (const struct tm *a, const struct tm *b); | |
| 428 | 1001 |
| 1002 | |
| 1003 DEFUN ("format-time-string", Fformat_time_string, 1, 2, 0, /* | |
| 1004 Use FORMAT-STRING to format the time TIME. | |
| 1005 TIME is specified as (HIGH LOW . IGNORED) or (HIGH . LOW), as from | |
| 1006 `current-time' and `file-attributes'. If TIME is not specified it | |
| 1007 defaults to the current time. | |
| 1008 FORMAT-STRING may contain %-sequences to substitute parts of the time. | |
| 1009 %a is replaced by the abbreviated name of the day of week. | |
| 1010 %A is replaced by the full name of the day of week. | |
| 1011 %b is replaced by the abbreviated name of the month. | |
| 1012 %B is replaced by the full name of the month. | |
| 1013 %c is a synonym for "%x %X". | |
| 1014 %C is a locale-specific synonym, which defaults to "%A, %B %e, %Y" in the C locale. | |
| 1015 %d is replaced by the day of month, zero-padded. | |
| 1016 %D is a synonym for "%m/%d/%y". | |
| 1017 %e is replaced by the day of month, blank-padded. | |
| 4203 | 1018 %G is replaced by the year containing the ISO 8601 week |
| 1019 %g is replaced by the year of the ISO 8601 week within the century (00-99) | |
| 428 | 1020 %h is a synonym for "%b". |
| 1021 %H is replaced by the hour (00-23). | |
| 1022 %I is replaced by the hour (00-12). | |
| 1023 %j is replaced by the day of the year (001-366). | |
| 1024 %k is replaced by the hour (0-23), blank padded. | |
| 1025 %l is replaced by the hour (1-12), blank padded. | |
| 1026 %m is replaced by the month (01-12). | |
| 1027 %M is replaced by the minute (00-59). | |
| 1028 %n is a synonym for "\\n". | |
| 1029 %p is replaced by AM or PM, as appropriate. | |
| 1030 %r is a synonym for "%I:%M:%S %p". | |
| 1031 %R is a synonym for "%H:%M". | |
| 1032 %s is replaced by the time in seconds since 00:00:00, Jan 1, 1970 (a | |
| 1033 nonstandard extension) | |
| 1034 %S is replaced by the second (00-60). | |
| 1035 %t is a synonym for "\\t". | |
| 1036 %T is a synonym for "%H:%M:%S". | |
| 1037 %U is replaced by the week of the year (00-53), first day of week is Sunday. | |
| 4203 | 1038 %V is replaced by the ISO 8601 week number |
| 428 | 1039 %w is replaced by the day of week (0-6), Sunday is day 0. |
| 1040 %W is replaced by the week of the year (00-53), first day of week is Monday. | |
| 1041 %x is a locale-specific synonym, which defaults to "%D" in the C locale. | |
| 1042 %X is a locale-specific synonym, which defaults to "%T" in the C locale. | |
| 1043 %y is replaced by the year without century (00-99). | |
| 1044 %Y is replaced by the year with century. | |
| 4203 | 1045 %z is replaced by the time zone as a numeric offset (e.g +0530, -0800 etc.) |
| 428 | 1046 %Z is replaced by the time zone abbreviation. |
| 1047 | |
| 1048 The number of options reflects the `strftime' function. | |
| 1049 | |
| 1050 BUG: If the charset used by the current locale is not ISO 8859-1, the | |
| 1051 characters appearing in the day and month names may be incorrect. | |
| 1052 */ | |
| 1053 (format_string, time_)) | |
| 1054 { | |
| 1055 time_t value; | |
| 665 | 1056 Bytecount size; |
| 428 | 1057 |
| 1058 CHECK_STRING (format_string); | |
| 1059 | |
| 1060 if (! lisp_to_time (time_, &value)) | |
| 563 | 1061 invalid_argument ("Invalid time specification", Qunbound); |
| 428 | 1062 |
| 1063 /* This is probably enough. */ | |
| 1064 size = XSTRING_LENGTH (format_string) * 6 + 50; | |
| 1065 | |
| 1066 while (1) | |
| 1067 { | |
| 2367 | 1068 Extbyte *buf = alloca_extbytes (size); |
| 771 | 1069 Extbyte *formext; |
| 4203 | 1070 /* make a copy of the static buffer returned by localtime() */ |
| 1071 struct tm tm = * localtime(&value); | |
| 1072 | |
| 428 | 1073 *buf = 1; |
| 771 | 1074 |
| 1075 /* !!#### this use of external here is not totally safe, and | |
| 1076 potentially data lossy. */ | |
| 1077 LISP_STRING_TO_EXTERNAL (format_string, formext, Qnative); | |
| 4203 | 1078 if (emacs_strftime (buf, size, formext, &tm) |
| 428 | 1079 || !*buf) |
| 771 | 1080 return build_ext_string (buf, Qnative); |
| 428 | 1081 /* If buffer was too small, make it bigger. */ |
| 1082 size *= 2; | |
| 1083 } | |
| 1084 } | |
| 1085 | |
| 1086 DEFUN ("decode-time", Fdecode_time, 0, 1, 0, /* | |
| 1087 Decode a time value as (SEC MINUTE HOUR DAY MONTH YEAR DOW DST ZONE). | |
| 1088 The optional SPECIFIED-TIME should be a list of (HIGH LOW . IGNORED) | |
| 1089 or (HIGH . LOW), as from `current-time' and `file-attributes', or `nil' | |
| 1090 to use the current time. The list has the following nine members: | |
| 1091 SEC is an integer between 0 and 60; SEC is 60 for a leap second, which | |
| 1092 only some operating systems support. MINUTE is an integer between 0 and 59. | |
| 1093 HOUR is an integer between 0 and 23. DAY is an integer between 1 and 31. | |
| 1094 MONTH is an integer between 1 and 12. YEAR is an integer indicating the | |
| 1095 four-digit year. DOW is the day of week, an integer between 0 and 6, where | |
| 1096 0 is Sunday. DST is t if daylight savings time is effect, otherwise nil. | |
| 1097 ZONE is an integer indicating the number of seconds east of Greenwich. | |
| 1098 \(Note that Common Lisp has different meanings for DOW and ZONE.) | |
| 1099 */ | |
| 1100 (specified_time)) | |
| 1101 { | |
| 1102 time_t time_spec; | |
| 1103 struct tm save_tm; | |
| 1104 struct tm *decoded_time; | |
| 1105 Lisp_Object list_args[9]; | |
| 1106 | |
| 1107 if (! lisp_to_time (specified_time, &time_spec)) | |
| 563 | 1108 invalid_argument ("Invalid time specification", Qunbound); |
| 428 | 1109 |
| 1110 decoded_time = localtime (&time_spec); | |
| 1111 list_args[0] = make_int (decoded_time->tm_sec); | |
| 1112 list_args[1] = make_int (decoded_time->tm_min); | |
| 1113 list_args[2] = make_int (decoded_time->tm_hour); | |
| 1114 list_args[3] = make_int (decoded_time->tm_mday); | |
| 1115 list_args[4] = make_int (decoded_time->tm_mon + 1); | |
| 1116 list_args[5] = make_int (decoded_time->tm_year + 1900); | |
| 1117 list_args[6] = make_int (decoded_time->tm_wday); | |
| 1118 list_args[7] = (decoded_time->tm_isdst)? Qt : Qnil; | |
| 1119 | |
| 1120 /* Make a copy, in case gmtime modifies the struct. */ | |
| 1121 save_tm = *decoded_time; | |
| 1122 decoded_time = gmtime (&time_spec); | |
| 1123 if (decoded_time == 0) | |
| 1124 list_args[8] = Qnil; | |
| 1125 else | |
| 1126 list_args[8] = make_int (difftm (&save_tm, decoded_time)); | |
| 1127 return Flist (9, list_args); | |
| 1128 } | |
| 1129 | |
| 771 | 1130 static void set_time_zone_rule (Extbyte *tzstring); |
| 428 | 1131 |
| 707 | 1132 /* from GNU Emacs 21, per Simon Josefsson, modified by stephen |
| 1133 The slight inefficiency is justified since negative times are weird. */ | |
| 1134 Lisp_Object | |
| 771 | 1135 make_time (time_t tiempo) |
| 707 | 1136 { |
| 771 | 1137 return list2 (make_int (tiempo < 0 ? tiempo / 0x10000 : tiempo >> 16), |
| 1138 make_int (tiempo & 0xFFFF)); | |
| 707 | 1139 } |
| 1140 | |
| 428 | 1141 DEFUN ("encode-time", Fencode_time, 6, MANY, 0, /* |
| 1142 Convert SECOND, MINUTE, HOUR, DAY, MONTH, YEAR and ZONE to internal time. | |
| 1143 This is the reverse operation of `decode-time', which see. | |
| 1144 ZONE defaults to the current time zone rule. This can | |
| 1145 be a string (as from `set-time-zone-rule'), or it can be a list | |
| 1146 \(as from `current-time-zone') or an integer (as from `decode-time') | |
| 1147 applied without consideration for daylight savings time. | |
| 1148 | |
| 1149 You can pass more than 7 arguments; then the first six arguments | |
| 1150 are used as SECOND through YEAR, and the *last* argument is used as ZONE. | |
| 1151 The intervening arguments are ignored. | |
| 1152 This feature lets (apply 'encode-time (decode-time ...)) work. | |
| 1153 | |
| 1154 Out-of-range values for SEC, MINUTE, HOUR, DAY, or MONTH are allowed; | |
| 1155 for example, a DAY of 0 means the day preceding the given month. | |
| 1156 Year numbers less than 100 are treated just like other year numbers. | |
| 1157 If you want them to stand for years in this century, you must do that yourself. | |
| 1158 */ | |
| 1159 (int nargs, Lisp_Object *args)) | |
| 1160 { | |
| 1161 time_t the_time; | |
| 1162 struct tm tm; | |
| 1163 Lisp_Object zone = (nargs > 6) ? args[nargs - 1] : Qnil; | |
| 1164 | |
| 1165 CHECK_INT (*args); tm.tm_sec = XINT (*args++); /* second */ | |
| 1166 CHECK_INT (*args); tm.tm_min = XINT (*args++); /* minute */ | |
| 1167 CHECK_INT (*args); tm.tm_hour = XINT (*args++); /* hour */ | |
| 1168 CHECK_INT (*args); tm.tm_mday = XINT (*args++); /* day */ | |
| 1169 CHECK_INT (*args); tm.tm_mon = XINT (*args++) - 1; /* month */ | |
| 1170 CHECK_INT (*args); tm.tm_year = XINT (*args++) - 1900;/* year */ | |
| 1171 | |
| 1172 tm.tm_isdst = -1; | |
| 1173 | |
| 1174 if (CONSP (zone)) | |
| 1175 zone = XCAR (zone); | |
| 1176 if (NILP (zone)) | |
| 1177 the_time = mktime (&tm); | |
| 1178 else | |
| 1179 { | |
| 771 | 1180 /* #### This business of modifying environ is horrendous! |
| 1181 Why don't we just putenv()? Why don't we implement our own | |
| 1182 funs that don't require this futzing? */ | |
| 1183 Extbyte tzbuf[100]; | |
| 1184 Extbyte *tzstring; | |
| 1185 Extbyte **oldenv = environ, **newenv; | |
| 428 | 1186 |
| 1187 if (STRINGP (zone)) | |
| 771 | 1188 LISP_STRING_TO_EXTERNAL (zone, tzstring, Qnative); |
| 428 | 1189 else if (INTP (zone)) |
| 1190 { | |
| 1191 int abszone = abs (XINT (zone)); | |
| 1192 sprintf (tzbuf, "XXX%s%d:%02d:%02d", "-" + (XINT (zone) < 0), | |
| 1193 abszone / (60*60), (abszone/60) % 60, abszone % 60); | |
| 1194 tzstring = tzbuf; | |
| 1195 } | |
| 1196 else | |
| 771 | 1197 invalid_argument ("Invalid time zone specification", Qunbound); |
| 428 | 1198 |
| 1199 /* Set TZ before calling mktime; merely adjusting mktime's returned | |
| 1200 value doesn't suffice, since that would mishandle leap seconds. */ | |
| 1201 set_time_zone_rule (tzstring); | |
| 1202 | |
| 1203 the_time = mktime (&tm); | |
| 1204 | |
| 1205 /* Restore TZ to previous value. */ | |
| 1206 newenv = environ; | |
| 1207 environ = oldenv; | |
| 1208 free (newenv); | |
| 1209 #ifdef LOCALTIME_CACHE | |
| 1210 tzset (); | |
| 1211 #endif | |
| 1212 } | |
| 1213 | |
| 1214 if (the_time == (time_t) -1) | |
| 563 | 1215 invalid_argument ("Specified time is not representable", Qunbound); |
| 428 | 1216 |
| 707 | 1217 return make_time (the_time); |
| 428 | 1218 } |
| 1219 | |
| 1220 DEFUN ("current-time-string", Fcurrent_time_string, 0, 1, 0, /* | |
| 1221 Return the current time, as a human-readable string. | |
| 1222 Programs can use this function to decode a time, | |
| 1223 since the number of columns in each field is fixed. | |
| 1224 The format is `Sun Sep 16 01:03:52 1973'. | |
| 1225 If an argument is given, it specifies a time to format | |
| 1226 instead of the current time. The argument should have the form: | |
| 1227 (HIGH . LOW) | |
| 1228 or the form: | |
| 1229 (HIGH LOW . IGNORED). | |
| 1230 Thus, you can use times obtained from `current-time' | |
| 1231 and from `file-attributes'. | |
| 1232 */ | |
| 1233 (specified_time)) | |
| 1234 { | |
| 1235 time_t value; | |
| 867 | 1236 Ibyte *the_ctime; |
| 647 | 1237 EMACS_INT len; /* this is what make_ext_string() accepts; #### |
| 665 | 1238 should it be an Bytecount? */ |
| 428 | 1239 |
| 1240 if (! lisp_to_time (specified_time, &value)) | |
| 1241 value = -1; | |
| 771 | 1242 the_ctime = qxe_ctime (&value); |
| 428 | 1243 |
| 442 | 1244 /* ctime is documented as always returning a "\n\0"-terminated |
| 1245 26-byte American time string, but let's be careful anyways. */ | |
| 1246 for (len = 0; the_ctime[len] != '\n' && the_ctime[len] != '\0'; len++) | |
| 1247 ; | |
| 428 | 1248 |
| 771 | 1249 return make_string (the_ctime, len); |
| 428 | 1250 } |
| 1251 | |
| 1252 #define TM_YEAR_ORIGIN 1900 | |
| 1253 | |
| 1254 /* Yield A - B, measured in seconds. */ | |
| 1255 static long | |
| 442 | 1256 difftm (const struct tm *a, const struct tm *b) |
| 428 | 1257 { |
| 1258 int ay = a->tm_year + (TM_YEAR_ORIGIN - 1); | |
| 1259 int by = b->tm_year + (TM_YEAR_ORIGIN - 1); | |
| 1260 /* Some compilers can't handle this as a single return statement. */ | |
| 1261 long days = ( | |
| 1262 /* difference in day of year */ | |
| 1263 a->tm_yday - b->tm_yday | |
| 1264 /* + intervening leap days */ | |
| 1265 + ((ay >> 2) - (by >> 2)) | |
| 1266 - (ay/100 - by/100) | |
| 1267 + ((ay/100 >> 2) - (by/100 >> 2)) | |
| 1268 /* + difference in years * 365 */ | |
| 1269 + (long)(ay-by) * 365 | |
| 1270 ); | |
| 1271 return (60*(60*(24*days + (a->tm_hour - b->tm_hour)) | |
| 1272 + (a->tm_min - b->tm_min)) | |
| 1273 + (a->tm_sec - b->tm_sec)); | |
| 1274 } | |
| 1275 | |
| 1276 DEFUN ("current-time-zone", Fcurrent_time_zone, 0, 1, 0, /* | |
| 1277 Return the offset and name for the local time zone. | |
| 1278 This returns a list of the form (OFFSET NAME). | |
| 1279 OFFSET is an integer number of seconds ahead of UTC (east of Greenwich). | |
| 1280 A negative value means west of Greenwich. | |
| 1281 NAME is a string giving the name of the time zone. | |
| 1282 If an argument is given, it specifies when the time zone offset is determined | |
| 1283 instead of using the current time. The argument should have the form: | |
| 1284 (HIGH . LOW) | |
| 1285 or the form: | |
| 1286 (HIGH LOW . IGNORED). | |
| 1287 Thus, you can use times obtained from `current-time' | |
| 1288 and from `file-attributes'. | |
| 1289 | |
| 1290 Some operating systems cannot provide all this information to Emacs; | |
| 1291 in this case, `current-time-zone' returns a list containing nil for | |
| 1292 the data it can't find. | |
| 1293 */ | |
| 1294 (specified_time)) | |
| 1295 { | |
| 1296 time_t value; | |
| 1297 struct tm *t = NULL; | |
| 1298 | |
| 1299 if (lisp_to_time (specified_time, &value) | |
| 1300 && (t = gmtime (&value)) != 0) | |
| 1301 { | |
| 1302 struct tm gmt = *t; /* Make a copy, in case localtime modifies *t. */ | |
| 1303 long offset; | |
| 771 | 1304 Extbyte *s; |
| 1305 Lisp_Object tem; | |
| 428 | 1306 |
| 1307 t = localtime (&value); | |
| 1308 offset = difftm (t, &gmt); | |
| 1309 s = 0; | |
| 1310 #ifdef HAVE_TM_ZONE | |
| 1311 if (t->tm_zone) | |
| 771 | 1312 s = (Extbyte *) t->tm_zone; |
| 428 | 1313 #else /* not HAVE_TM_ZONE */ |
| 1314 #ifdef HAVE_TZNAME | |
| 1315 if (t->tm_isdst == 0 || t->tm_isdst == 1) | |
| 1316 s = tzname[t->tm_isdst]; | |
| 1317 #endif | |
| 1318 #endif /* not HAVE_TM_ZONE */ | |
| 771 | 1319 if (s) |
| 1320 tem = build_ext_string (s, Qnative); | |
| 1321 else | |
| 428 | 1322 { |
| 867 | 1323 Ibyte buf[6]; |
| 771 | 1324 |
| 428 | 1325 /* No local time zone name is available; use "+-NNNN" instead. */ |
| 1326 int am = (offset < 0 ? -offset : offset) / 60; | |
| 771 | 1327 qxesprintf (buf, "%c%02d%02d", (offset < 0 ? '-' : '+'), am/60, |
| 1328 am%60); | |
| 1329 tem = build_intstring (buf); | |
| 428 | 1330 } |
| 771 | 1331 return list2 (make_int (offset), tem); |
| 428 | 1332 } |
| 1333 else | |
| 1334 return list2 (Qnil, Qnil); | |
| 1335 } | |
| 1336 | |
| 1337 #ifdef LOCALTIME_CACHE | |
| 1338 | |
| 1339 /* These two values are known to load tz files in buggy implementations, | |
| 1340 i.e. Solaris 1 executables running under either Solaris 1 or Solaris 2. | |
| 1341 Their values shouldn't matter in non-buggy implementations. | |
| 1342 We don't use string literals for these strings, | |
| 1343 since if a string in the environment is in readonly | |
| 1344 storage, it runs afoul of bugs in SVR4 and Solaris 2.3. | |
| 1345 See Sun bugs 1113095 and 1114114, ``Timezone routines | |
| 1346 improperly modify environment''. */ | |
| 1347 | |
| 2367 | 1348 static Ascbyte set_time_zone_rule_tz1[] = "TZ=GMT+0"; |
| 1349 static Ascbyte set_time_zone_rule_tz2[] = "TZ=GMT+1"; | |
| 428 | 1350 |
| 1351 #endif | |
| 1352 | |
| 1353 /* Set the local time zone rule to TZSTRING. | |
| 1354 This allocates memory into `environ', which it is the caller's | |
| 1355 responsibility to free. */ | |
| 1356 static void | |
| 771 | 1357 set_time_zone_rule (Extbyte *tzstring) |
| 428 | 1358 { |
| 1359 int envptrs; | |
| 771 | 1360 Extbyte **from, **to, **newenv; |
| 428 | 1361 |
| 1362 for (from = environ; *from; from++) | |
| 1363 continue; | |
| 1364 envptrs = from - environ + 2; | |
| 771 | 1365 newenv = to = (Extbyte **) xmalloc (envptrs * sizeof (Extbyte *) |
| 428 | 1366 + (tzstring ? strlen (tzstring) + 4 : 0)); |
| 1367 if (tzstring) | |
| 1368 { | |
| 771 | 1369 Extbyte *t = (Extbyte *) (to + envptrs); |
| 428 | 1370 strcpy (t, "TZ="); |
| 1371 strcat (t, tzstring); | |
| 1372 *to++ = t; | |
| 1373 } | |
| 1374 | |
| 1375 for (from = environ; *from; from++) | |
| 1376 if (strncmp (*from, "TZ=", 3) != 0) | |
| 1377 *to++ = *from; | |
| 1378 *to = 0; | |
| 1379 | |
| 1380 environ = newenv; | |
| 1381 | |
| 1382 #ifdef LOCALTIME_CACHE | |
| 1383 { | |
| 1384 /* In SunOS 4.1.3_U1 and 4.1.4, if TZ has a value like | |
| 1385 "US/Pacific" that loads a tz file, then changes to a value like | |
| 1386 "XXX0" that does not load a tz file, and then changes back to | |
| 1387 its original value, the last change is (incorrectly) ignored. | |
| 1388 Also, if TZ changes twice in succession to values that do | |
| 1389 not load a tz file, tzset can dump core (see Sun bug#1225179). | |
| 1390 The following code works around these bugs. */ | |
| 1391 | |
| 1392 if (tzstring) | |
| 1393 { | |
| 1394 /* Temporarily set TZ to a value that loads a tz file | |
| 1395 and that differs from tzstring. */ | |
| 771 | 1396 Extbyte *tz = *newenv; |
| 428 | 1397 *newenv = (strcmp (tzstring, set_time_zone_rule_tz1 + 3) == 0 |
| 1398 ? set_time_zone_rule_tz2 : set_time_zone_rule_tz1); | |
| 1399 tzset (); | |
| 1400 *newenv = tz; | |
| 1401 } | |
| 1402 else | |
| 1403 { | |
| 1404 /* The implied tzstring is unknown, so temporarily set TZ to | |
| 1405 two different values that each load a tz file. */ | |
| 1406 *to = set_time_zone_rule_tz1; | |
| 1407 to[1] = 0; | |
| 1408 tzset (); | |
| 1409 *to = set_time_zone_rule_tz2; | |
| 1410 tzset (); | |
| 1411 *to = 0; | |
| 1412 } | |
| 1413 | |
| 1414 /* Now TZ has the desired value, and tzset can be invoked safely. */ | |
| 1415 } | |
| 1416 | |
| 1417 tzset (); | |
| 1418 #endif | |
| 1419 } | |
| 1420 | |
| 1421 DEFUN ("set-time-zone-rule", Fset_time_zone_rule, 1, 1, 0, /* | |
| 1422 Set the local time zone using TZ, a string specifying a time zone rule. | |
| 1423 If TZ is nil, use implementation-defined default time zone information. | |
| 1424 */ | |
| 1425 (tz)) | |
| 1426 { | |
| 771 | 1427 Extbyte *tzstring; |
| 428 | 1428 |
| 1429 if (NILP (tz)) | |
| 1430 tzstring = 0; | |
| 1431 else | |
| 1432 { | |
| 1433 CHECK_STRING (tz); | |
| 771 | 1434 LISP_STRING_TO_EXTERNAL (tz, tzstring, Qnative); |
| 428 | 1435 } |
| 1436 | |
| 1437 set_time_zone_rule (tzstring); | |
| 1438 if (environbuf) | |
| 1726 | 1439 xfree (environbuf, Extbyte **); |
| 428 | 1440 environbuf = environ; |
| 1441 | |
| 1442 return Qnil; | |
| 1443 } | |
| 1444 | |
| 1445 | |
| 1446 void | |
| 1447 buffer_insert1 (struct buffer *buf, Lisp_Object arg) | |
| 1448 { | |
| 1449 /* This function can GC */ | |
| 1450 struct gcpro gcpro1; | |
| 1451 GCPRO1 (arg); | |
| 1452 retry: | |
| 1453 if (CHAR_OR_CHAR_INTP (arg)) | |
| 1454 { | |
| 1455 buffer_insert_emacs_char (buf, XCHAR_OR_CHAR_INT (arg)); | |
| 1456 } | |
| 1457 else if (STRINGP (arg)) | |
| 1458 { | |
| 1459 buffer_insert_lisp_string (buf, arg); | |
| 1460 } | |
| 1461 else | |
| 1462 { | |
| 1463 arg = wrong_type_argument (Qchar_or_string_p, arg); | |
| 1464 goto retry; | |
| 1465 } | |
| 1466 UNGCPRO; | |
| 1467 } | |
| 1468 | |
| 1469 | |
| 1470 /* Callers passing one argument to Finsert need not gcpro the | |
| 1471 argument "array", since the only element of the array will | |
| 1472 not be used after calling insert_emacs_char or insert_lisp_string, | |
| 1473 so we don't care if it gets trashed. */ | |
| 1474 | |
| 1475 DEFUN ("insert", Finsert, 0, MANY, 0, /* | |
| 1476 Insert the arguments, either strings or characters, at point. | |
| 1477 Point moves forward so that it ends up after the inserted text. | |
| 1478 Any other markers at the point of insertion remain before the text. | |
| 1479 If a string has non-null string-extent-data, new extents will be created. | |
| 1480 */ | |
| 1481 (int nargs, Lisp_Object *args)) | |
| 1482 { | |
| 1483 /* This function can GC */ | |
| 1484 REGISTER int argnum; | |
| 1485 | |
| 1486 for (argnum = 0; argnum < nargs; argnum++) | |
| 1487 { | |
| 1488 buffer_insert1 (current_buffer, args[argnum]); | |
| 1489 } | |
| 1490 | |
| 1491 return Qnil; | |
| 1492 } | |
| 1493 | |
| 1494 DEFUN ("insert-before-markers", Finsert_before_markers, 0, MANY, 0, /* | |
| 1495 Insert strings or characters at point, relocating markers after the text. | |
| 1496 Point moves forward so that it ends up after the inserted text. | |
| 1497 Any other markers at the point of insertion also end up after the text. | |
| 1498 */ | |
| 1499 (int nargs, Lisp_Object *args)) | |
| 1500 { | |
| 1501 /* This function can GC */ | |
| 1502 REGISTER int argnum; | |
| 1503 REGISTER Lisp_Object tem; | |
| 1504 | |
| 1505 for (argnum = 0; argnum < nargs; argnum++) | |
| 1506 { | |
| 1507 tem = args[argnum]; | |
| 1508 retry: | |
| 1509 if (CHAR_OR_CHAR_INTP (tem)) | |
| 1510 { | |
| 1511 buffer_insert_emacs_char_1 (current_buffer, -1, | |
| 1512 XCHAR_OR_CHAR_INT (tem), | |
| 1513 INSDEL_BEFORE_MARKERS); | |
| 1514 } | |
| 1515 else if (STRINGP (tem)) | |
| 1516 { | |
| 1517 buffer_insert_lisp_string_1 (current_buffer, -1, tem, | |
| 1518 INSDEL_BEFORE_MARKERS); | |
| 1519 } | |
| 1520 else | |
| 1521 { | |
| 1522 tem = wrong_type_argument (Qchar_or_string_p, tem); | |
| 1523 goto retry; | |
| 1524 } | |
| 1525 } | |
| 1526 return Qnil; | |
| 1527 } | |
| 1528 | |
| 1529 DEFUN ("insert-string", Finsert_string, 1, 2, 0, /* | |
| 1530 Insert STRING into BUFFER at BUFFER's point. | |
| 1531 Point moves forward so that it ends up after the inserted text. | |
| 1532 Any other markers at the point of insertion remain before the text. | |
| 1533 If a string has non-null string-extent-data, new extents will be created. | |
| 1534 BUFFER defaults to the current buffer. | |
| 1535 */ | |
| 1536 (string, buffer)) | |
| 1537 { | |
| 1538 struct buffer *b = decode_buffer (buffer, 1); | |
| 1539 CHECK_STRING (string); | |
| 1540 buffer_insert_lisp_string (b, string); | |
| 1541 return Qnil; | |
| 1542 } | |
| 1543 | |
| 1544 /* Third argument in FSF is INHERIT: | |
| 1545 | |
| 1546 "The optional third arg INHERIT, if non-nil, says to inherit text properties | |
| 1547 from adjoining text, if those properties are sticky." | |
| 1548 | |
| 1549 Jamie thinks this is bogus. */ | |
| 1550 | |
| 1551 | |
| 1552 DEFUN ("insert-char", Finsert_char, 1, 4, 0, /* | |
| 444 | 1553 Insert COUNT copies of CHARACTER into BUFFER. |
| 428 | 1554 Point and all markers are affected as in the function `insert'. |
| 1555 COUNT defaults to 1 if omitted. | |
| 1556 The optional third arg IGNORED is INHERIT under FSF Emacs. | |
| 1557 This is highly bogus, however, and XEmacs always behaves as if | |
| 1558 `t' were passed to INHERIT. | |
| 1559 The optional fourth arg BUFFER specifies the buffer to insert the | |
| 1560 text into. If BUFFER is nil, the current buffer is assumed. | |
| 1561 */ | |
| 2286 | 1562 (character, count, UNUSED (ignored), buffer)) |
| 428 | 1563 { |
| 1564 /* This function can GC */ | |
| 867 | 1565 REGISTER Ibyte *string; |
| 814 | 1566 REGISTER Bytecount slen; |
| 1567 REGISTER Bytecount i, j; | |
| 428 | 1568 REGISTER Bytecount n; |
| 1569 REGISTER Bytecount charlen; | |
| 867 | 1570 Ibyte str[MAX_ICHAR_LEN]; |
| 428 | 1571 struct buffer *b = decode_buffer (buffer, 1); |
| 1572 int cou; | |
| 1573 | |
| 444 | 1574 CHECK_CHAR_COERCE_INT (character); |
| 428 | 1575 if (NILP (count)) |
| 1576 cou = 1; | |
| 1577 else | |
| 1578 { | |
| 1579 CHECK_INT (count); | |
| 1580 cou = XINT (count); | |
| 1581 } | |
| 1582 | |
| 867 | 1583 charlen = set_itext_ichar (str, XCHAR (character)); |
| 428 | 1584 n = cou * charlen; |
| 1585 if (n <= 0) | |
| 1586 return Qnil; | |
| 814 | 1587 slen = min (n, (Bytecount) 768); |
| 2367 | 1588 string = alloca_ibytes (slen); |
| 428 | 1589 /* Write as many copies of the character into the temp string as will fit. */ |
| 1590 for (i = 0; i + charlen <= slen; i += charlen) | |
| 1591 for (j = 0; j < charlen; j++) | |
| 1592 string[i + j] = str[j]; | |
| 1593 slen = i; | |
| 1594 while (n >= slen) | |
| 1595 { | |
| 1596 buffer_insert_raw_string (b, string, slen); | |
| 1597 n -= slen; | |
| 1598 } | |
| 1599 if (n > 0) | |
| 1600 #if 0 /* FSFmacs bogosity */ | |
| 1601 { | |
| 1602 if (!NILP (inherit)) | |
| 1603 insert_and_inherit (string, n); | |
| 1604 else | |
| 1605 insert (string, n); | |
| 1606 } | |
| 1607 #else | |
| 1608 buffer_insert_raw_string (b, string, n); | |
| 1609 #endif | |
| 1610 | |
| 1611 return Qnil; | |
| 1612 } | |
| 1613 | |
| 1614 | |
| 1615 /* Making strings from buffer contents. */ | |
| 1616 | |
| 1617 DEFUN ("buffer-substring", Fbuffer_substring, 0, 3, 0, /* | |
| 1618 Return the contents of part of BUFFER as a string. | |
| 1619 The two arguments START and END are character positions; | |
| 1620 they can be in either order. If omitted, they default to the beginning | |
| 1621 and end of BUFFER, respectively. | |
| 1622 If there are duplicable extents in the region, the string remembers | |
| 1623 them in its extent data. | |
| 1624 If BUFFER is nil, the current buffer is assumed. | |
| 1625 */ | |
| 1626 (start, end, buffer)) | |
| 1627 { | |
| 1628 /* This function can GC */ | |
| 665 | 1629 Charbpos begv, zv; |
| 428 | 1630 struct buffer *b = decode_buffer (buffer, 1); |
| 1631 | |
| 1632 get_buffer_range_char (b, start, end, &begv, &zv, GB_ALLOW_NIL); | |
| 1633 return make_string_from_buffer (b, begv, zv - begv); | |
| 1634 } | |
| 1635 | |
| 1636 /* It might make more sense to name this | |
| 1637 `buffer-substring-no-extents', but this name is FSFmacs-compatible, | |
| 1638 and what the function does is probably good enough for what the | |
| 1639 user-code will typically want to use it for. */ | |
| 1640 DEFUN ("buffer-substring-no-properties", Fbuffer_substring_no_properties, 0, 3, 0, /* | |
| 444 | 1641 Return the text from START to END as a string, without copying the extents. |
| 428 | 1642 */ |
| 1643 (start, end, buffer)) | |
| 1644 { | |
| 1645 /* This function can GC */ | |
| 665 | 1646 Charbpos begv, zv; |
| 428 | 1647 struct buffer *b = decode_buffer (buffer, 1); |
| 1648 | |
| 1649 get_buffer_range_char (b, start, end, &begv, &zv, GB_ALLOW_NIL); | |
| 1650 return make_string_from_buffer_no_extents (b, begv, zv - begv); | |
| 1651 } | |
| 1652 | |
| 1653 DEFUN ("insert-buffer-substring", Finsert_buffer_substring, 1, 3, 0, /* | |
| 1654 Insert before point a substring of the contents of buffer BUFFER. | |
| 1655 BUFFER may be a buffer or a buffer name. | |
| 1656 Arguments START and END are character numbers specifying the substring. | |
| 1657 They default to the beginning and the end of BUFFER. | |
| 1658 */ | |
| 1659 (buffer, start, end)) | |
| 1660 { | |
| 1661 /* This function can GC */ | |
| 665 | 1662 Charbpos b, e; |
| 428 | 1663 struct buffer *bp; |
| 1664 | |
| 1665 bp = XBUFFER (get_buffer (buffer, 1)); | |
| 1666 get_buffer_range_char (bp, start, end, &b, &e, GB_ALLOW_NIL); | |
| 1667 | |
| 1668 if (b < e) | |
| 1669 buffer_insert_from_buffer (current_buffer, bp, b, e - b); | |
| 1670 | |
| 1671 return Qnil; | |
| 1672 } | |
| 1673 | |
| 1674 DEFUN ("compare-buffer-substrings", Fcompare_buffer_substrings, 6, 6, 0, /* | |
| 1675 Compare two substrings of two buffers; return result as number. | |
| 1676 the value is -N if first string is less after N-1 chars, | |
| 1677 +N if first string is greater after N-1 chars, or 0 if strings match. | |
| 1678 Each substring is represented as three arguments: BUFFER, START and END. | |
| 1679 That makes six args in all, three for each substring. | |
| 1680 | |
| 1681 The value of `case-fold-search' in the current buffer | |
| 1682 determines whether case is significant or ignored. | |
| 1683 */ | |
| 1684 (buffer1, start1, end1, buffer2, start2, end2)) | |
| 1685 { | |
| 665 | 1686 Charbpos begp1, endp1, begp2, endp2; |
| 428 | 1687 REGISTER Charcount len1, len2, length, i; |
| 1688 struct buffer *bp1, *bp2; | |
| 1689 Lisp_Object trt = ((!NILP (current_buffer->case_fold_search)) ? | |
| 446 | 1690 XCASE_TABLE_CANON (current_buffer->case_table) : Qnil); |
| 428 | 1691 |
| 1692 /* Find the first buffer and its substring. */ | |
| 1693 | |
| 1694 bp1 = decode_buffer (buffer1, 1); | |
| 1695 get_buffer_range_char (bp1, start1, end1, &begp1, &endp1, GB_ALLOW_NIL); | |
| 1696 | |
| 1697 /* Likewise for second substring. */ | |
| 1698 | |
| 1699 bp2 = decode_buffer (buffer2, 1); | |
| 1700 get_buffer_range_char (bp2, start2, end2, &begp2, &endp2, GB_ALLOW_NIL); | |
| 1701 | |
| 1702 len1 = endp1 - begp1; | |
| 1703 len2 = endp2 - begp2; | |
| 1704 length = len1; | |
| 1705 if (len2 < length) | |
| 1706 length = len2; | |
| 1707 | |
| 1708 for (i = 0; i < length; i++) | |
| 1709 { | |
| 867 | 1710 Ichar c1 = BUF_FETCH_CHAR (bp1, begp1 + i); |
| 1711 Ichar c2 = BUF_FETCH_CHAR (bp2, begp2 + i); | |
| 428 | 1712 if (!NILP (trt)) |
| 1713 { | |
| 1714 c1 = TRT_TABLE_OF (trt, c1); | |
| 1715 c2 = TRT_TABLE_OF (trt, c2); | |
| 1716 } | |
| 1717 if (c1 < c2) | |
| 1718 return make_int (- 1 - i); | |
| 1719 if (c1 > c2) | |
| 1720 return make_int (i + 1); | |
| 1721 } | |
| 1722 | |
| 1723 /* The strings match as far as they go. | |
| 1724 If one is shorter, that one is less. */ | |
| 1725 if (length < len1) | |
| 1726 return make_int (length + 1); | |
| 1727 else if (length < len2) | |
| 1728 return make_int (- length - 1); | |
| 1729 | |
| 1730 /* Same length too => they are equal. */ | |
| 1731 return Qzero; | |
| 1732 } | |
| 1733 | |
| 1734 | |
| 1735 static Lisp_Object | |
| 1736 subst_char_in_region_unwind (Lisp_Object arg) | |
| 1737 { | |
| 1738 XBUFFER (XCAR (arg))->undo_list = XCDR (arg); | |
| 1739 return Qnil; | |
| 1740 } | |
| 1741 | |
| 1742 static Lisp_Object | |
| 1743 subst_char_in_region_unwind_1 (Lisp_Object arg) | |
| 1744 { | |
| 1745 XBUFFER (XCAR (arg))->filename = XCDR (arg); | |
| 1746 return Qnil; | |
| 1747 } | |
| 1748 | |
| 1749 DEFUN ("subst-char-in-region", Fsubst_char_in_region, 4, 5, 0, /* | |
| 1750 From START to END, replace FROMCHAR with TOCHAR each time it occurs. | |
| 1751 If optional arg NOUNDO is non-nil, don't record this change for undo | |
| 1752 and don't mark the buffer as really changed. | |
| 1753 */ | |
| 1754 (start, end, fromchar, tochar, noundo)) | |
| 1755 { | |
| 1756 /* This function can GC */ | |
| 665 | 1757 Charbpos pos, stop; |
| 867 | 1758 Ichar fromc, toc; |
| 428 | 1759 int mc_count; |
| 1760 struct buffer *buf = current_buffer; | |
| 1761 int count = specpdl_depth (); | |
| 1762 | |
| 1763 get_buffer_range_char (buf, start, end, &pos, &stop, 0); | |
| 1764 CHECK_CHAR_COERCE_INT (fromchar); | |
| 1765 CHECK_CHAR_COERCE_INT (tochar); | |
| 1766 | |
| 1767 fromc = XCHAR (fromchar); | |
| 1768 toc = XCHAR (tochar); | |
| 1769 | |
| 1770 /* If we don't want undo, turn off putting stuff on the list. | |
| 1771 That's faster than getting rid of things, | |
| 1772 and it prevents even the entry for a first change. | |
| 1773 Also inhibit locking the file. */ | |
| 1774 if (!NILP (noundo)) | |
| 1775 { | |
| 1776 record_unwind_protect (subst_char_in_region_unwind, | |
| 1777 Fcons (Fcurrent_buffer (), buf->undo_list)); | |
| 1778 buf->undo_list = Qt; | |
| 1779 /* Don't do file-locking. */ | |
| 1780 record_unwind_protect (subst_char_in_region_unwind_1, | |
| 1781 Fcons (Fcurrent_buffer (), buf->filename)); | |
| 1782 buf->filename = Qnil; | |
| 1783 } | |
| 1784 | |
| 1785 mc_count = begin_multiple_change (buf, pos, stop); | |
| 1786 while (pos < stop) | |
| 1787 { | |
| 1788 if (BUF_FETCH_CHAR (buf, pos) == fromc) | |
| 1789 { | |
| 1790 /* There used to be some code here that set the buffer to | |
| 1791 unmodified if NOUNDO was specified and there was only | |
| 1792 one change to the buffer since it was last saved. | |
| 1793 This is a crock of shit, so I'm not duplicating this | |
| 1794 behavior. I think this was left over from when | |
| 1795 prepare_to_modify_buffer() actually bumped MODIFF, | |
| 1796 so that code was supposed to undo this change. --ben */ | |
| 1797 buffer_replace_char (buf, pos, toc, !NILP (noundo), 0); | |
| 1798 | |
| 1799 /* If noundo is not nil then we don't mark the buffer as | |
| 1800 modified. In reality that needs to happen externally | |
| 1801 only. Internally redisplay needs to know that the actual | |
| 1802 contents it should be displaying have changed. */ | |
| 1803 if (!NILP (noundo)) | |
| 1804 Fset_buffer_modified_p (Fbuffer_modified_p (Qnil), Qnil); | |
| 1805 } | |
| 1806 pos++; | |
| 1807 } | |
| 1808 end_multiple_change (buf, mc_count); | |
| 1809 | |
| 771 | 1810 unbind_to (count); |
| 428 | 1811 return Qnil; |
| 1812 } | |
| 1813 | |
| 1814 /* #### Shouldn't this also accept a BUFFER argument, in the good old | |
| 1815 XEmacs tradition? */ | |
| 1816 DEFUN ("translate-region", Ftranslate_region, 3, 3, 0, /* | |
| 1817 Translate characters from START to END according to TABLE. | |
| 1818 | |
| 1819 If TABLE is a string, the Nth character in it is the mapping for the | |
| 1820 character with code N. | |
| 1821 | |
| 1822 If TABLE is a vector, its Nth element is the mapping for character | |
| 1823 with code N. The values of elements may be characters, strings, or | |
| 1824 nil (nil meaning don't replace.) | |
| 1825 | |
| 1826 If TABLE is a char-table, its elements describe the mapping between | |
|
4469
c661944aa259
Fill out docstrings for #'translate-region, #'make-char-table.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4329
diff
changeset
|
1827 characters and their replacements. The char-table should be of type `char' |
|
4470
c76b1bc6bd28
Correct a thinko in the #'translate-region docstring
Aidan Kehoe <kehoea@parhasard.net>
parents:
4469
diff
changeset
|
1828 or `generic'. If the value given by `get-char-table' for a given character |
|
4469
c661944aa259
Fill out docstrings for #'translate-region, #'make-char-table.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4329
diff
changeset
|
1829 is nil, that character will not be translated by `translate-region'. Since |
|
4470
c76b1bc6bd28
Correct a thinko in the #'translate-region docstring
Aidan Kehoe <kehoea@parhasard.net>
parents:
4469
diff
changeset
|
1830 `get-char-table' can never return nil with a char table of type `char', and |
|
c76b1bc6bd28
Correct a thinko in the #'translate-region docstring
Aidan Kehoe <kehoea@parhasard.net>
parents:
4469
diff
changeset
|
1831 since most translation involves a subset of the possible XEmacs characters, |
|
c76b1bc6bd28
Correct a thinko in the #'translate-region docstring
Aidan Kehoe <kehoea@parhasard.net>
parents:
4469
diff
changeset
|
1832 not all of them, the most generally useful table type here is `generic'. |
| 428 | 1833 |
| 1834 Returns the number of substitutions performed. | |
| 1835 */ | |
| 1836 (start, end, table)) | |
| 1837 { | |
| 1838 /* This function can GC */ | |
| 665 | 1839 Charbpos pos, stop; /* Limits of the region. */ |
| 428 | 1840 int cnt = 0; /* Number of changes made. */ |
| 1841 int mc_count; | |
| 1842 struct buffer *buf = current_buffer; | |
| 867 | 1843 Ichar oc; |
| 428 | 1844 |
| 1845 get_buffer_range_char (buf, start, end, &pos, &stop, 0); | |
| 1846 mc_count = begin_multiple_change (buf, pos, stop); | |
| 1847 if (STRINGP (table)) | |
| 1848 { | |
| 826 | 1849 Charcount size = string_char_length (table); |
| 428 | 1850 #ifdef MULE |
| 867 | 1851 /* Under Mule, string_ichar(n) is O(n), so for large tables or |
| 1852 large regions it makes sense to create an array of Ichars. */ | |
| 428 | 1853 if (size * (stop - pos) > 65536) |
| 1854 { | |
| 867 | 1855 Ichar *etable = alloca_array (Ichar, size); |
| 1856 convert_ibyte_string_into_ichar_string | |
| 793 | 1857 (XSTRING_DATA (table), XSTRING_LENGTH (table), etable); |
| 428 | 1858 for (; pos < stop && (oc = BUF_FETCH_CHAR (buf, pos), 1); pos++) |
| 1859 { | |
| 1860 if (oc < size) | |
| 1861 { | |
| 867 | 1862 Ichar nc = etable[oc]; |
| 428 | 1863 if (nc != oc) |
| 1864 { | |
| 1865 buffer_replace_char (buf, pos, nc, 0, 0); | |
| 1866 ++cnt; | |
| 1867 } | |
| 1868 } | |
| 1869 } | |
| 1870 } | |
| 1871 else | |
| 1872 #endif /* MULE */ | |
| 1873 { | |
| 1874 for (; pos < stop && (oc = BUF_FETCH_CHAR (buf, pos), 1); pos++) | |
| 1875 { | |
| 1876 if (oc < size) | |
| 1877 { | |
| 867 | 1878 Ichar nc = string_ichar (table, oc); |
| 428 | 1879 if (nc != oc) |
| 1880 { | |
| 1881 buffer_replace_char (buf, pos, nc, 0, 0); | |
| 1882 ++cnt; | |
| 1883 } | |
| 1884 } | |
| 1885 } | |
| 1886 } | |
| 1887 } | |
| 1888 else if (VECTORP (table)) | |
| 1889 { | |
| 1890 Charcount size = XVECTOR_LENGTH (table); | |
| 1891 Lisp_Object *vtable = XVECTOR_DATA (table); | |
| 1892 | |
| 1893 for (; pos < stop && (oc = BUF_FETCH_CHAR (buf, pos), 1); pos++) | |
| 1894 { | |
| 1895 if (oc < size) | |
| 1896 { | |
| 1897 Lisp_Object replacement = vtable[oc]; | |
| 1898 retry: | |
| 1899 if (CHAR_OR_CHAR_INTP (replacement)) | |
| 1900 { | |
| 867 | 1901 Ichar nc = XCHAR_OR_CHAR_INT (replacement); |
| 428 | 1902 if (nc != oc) |
| 1903 { | |
| 1904 buffer_replace_char (buf, pos, nc, 0, 0); | |
| 1905 ++cnt; | |
| 1906 } | |
| 1907 } | |
| 1908 else if (STRINGP (replacement)) | |
| 1909 { | |
| 826 | 1910 Charcount incr = string_char_length (replacement) - 1; |
| 428 | 1911 buffer_delete_range (buf, pos, pos + 1, 0); |
| 1912 buffer_insert_lisp_string_1 (buf, pos, replacement, 0); | |
| 1913 pos += incr, stop += incr; | |
| 1914 ++cnt; | |
| 1915 } | |
| 1916 else if (!NILP (replacement)) | |
| 1917 { | |
| 1918 replacement = wrong_type_argument (Qchar_or_string_p, replacement); | |
| 1919 goto retry; | |
| 1920 } | |
| 1921 } | |
| 1922 } | |
| 1923 } | |
| 1924 else if (CHAR_TABLEP (table) | |
| 1925 && (XCHAR_TABLE_TYPE (table) == CHAR_TABLE_TYPE_GENERIC | |
| 1926 || XCHAR_TABLE_TYPE (table) == CHAR_TABLE_TYPE_CHAR)) | |
| 1927 { | |
| 1928 | |
| 1929 for (; pos < stop && (oc = BUF_FETCH_CHAR (buf, pos), 1); pos++) | |
| 1930 { | |
| 826 | 1931 Lisp_Object replacement = get_char_table (oc, table); |
| 428 | 1932 retry2: |
| 1933 if (CHAR_OR_CHAR_INTP (replacement)) | |
| 1934 { | |
| 867 | 1935 Ichar nc = XCHAR_OR_CHAR_INT (replacement); |
| 428 | 1936 if (nc != oc) |
| 1937 { | |
| 1938 buffer_replace_char (buf, pos, nc, 0, 0); | |
| 1939 ++cnt; | |
| 1940 } | |
| 1941 } | |
| 1942 else if (STRINGP (replacement)) | |
| 1943 { | |
| 826 | 1944 Charcount incr = string_char_length (replacement) - 1; |
| 428 | 1945 buffer_delete_range (buf, pos, pos + 1, 0); |
| 1946 buffer_insert_lisp_string_1 (buf, pos, replacement, 0); | |
| 1947 pos += incr, stop += incr; | |
| 1948 ++cnt; | |
| 1949 } | |
| 1950 else if (!NILP (replacement)) | |
| 1951 { | |
| 826 | 1952 replacement = wrong_type_argument (Qchar_or_string_p, |
| 1953 replacement); | |
| 428 | 1954 goto retry2; |
| 1955 } | |
| 1956 } | |
| 1957 } | |
| 1958 else | |
| 1959 dead_wrong_type_argument (Qstringp, table); | |
| 1960 end_multiple_change (buf, mc_count); | |
| 1961 | |
| 1962 return make_int (cnt); | |
| 1963 } | |
| 1964 | |
| 1965 DEFUN ("delete-region", Fdelete_region, 2, 3, "r", /* | |
| 1966 Delete the text between point and mark. | |
| 444 | 1967 When called from a program, expects two arguments START and END |
| 1968 \(integers or markers) specifying the stretch to be deleted. | |
| 1969 If optional third arg BUFFER is nil, the current buffer is assumed. | |
| 428 | 1970 */ |
| 444 | 1971 (start, end, buffer)) |
| 428 | 1972 { |
| 1973 /* This function can GC */ | |
| 826 | 1974 Charbpos char_start, char_end; |
| 428 | 1975 struct buffer *buf = decode_buffer (buffer, 1); |
| 1976 | |
| 826 | 1977 get_buffer_range_char (buf, start, end, &char_start, &char_end, 0); |
| 1978 buffer_delete_range (buf, char_start, char_end, 0); | |
| 428 | 1979 return Qnil; |
| 1980 } | |
| 1981 | |
| 1982 void | |
| 1983 widen_buffer (struct buffer *b, int no_clip) | |
| 1984 { | |
| 1985 if (BUF_BEGV (b) != BUF_BEG (b)) | |
| 1986 { | |
| 1987 clip_changed = 1; | |
| 826 | 1988 SET_BOTH_BUF_BEGV (b, BUF_BEG (b), BYTE_BUF_BEG (b)); |
| 428 | 1989 } |
| 1990 if (BUF_ZV (b) != BUF_Z (b)) | |
| 1991 { | |
| 1992 clip_changed = 1; | |
| 826 | 1993 SET_BOTH_BUF_ZV (b, BUF_Z (b), BYTE_BUF_Z (b)); |
| 428 | 1994 } |
| 1995 if (clip_changed) | |
| 1996 { | |
| 1997 if (!no_clip) | |
| 1998 MARK_CLIP_CHANGED; | |
| 1999 /* Changing the buffer bounds invalidates any recorded current | |
| 2000 column. */ | |
| 2001 invalidate_current_column (); | |
| 2002 narrow_line_number_cache (b); | |
| 2003 } | |
| 2004 } | |
| 2005 | |
| 2006 DEFUN ("widen", Fwiden, 0, 1, "", /* | |
| 2007 Remove restrictions (narrowing) from BUFFER. | |
| 2008 This allows the buffer's full text to be seen and edited. | |
| 2009 If BUFFER is nil, the current buffer is assumed. | |
| 2010 */ | |
| 2011 (buffer)) | |
| 2012 { | |
| 2013 struct buffer *b = decode_buffer (buffer, 1); | |
| 2014 widen_buffer (b, 0); | |
| 2015 return Qnil; | |
| 2016 } | |
| 2017 | |
| 2018 DEFUN ("narrow-to-region", Fnarrow_to_region, 2, 3, "r", /* | |
| 2019 Restrict editing in BUFFER to the current region. | |
| 2020 The rest of the text becomes temporarily invisible and untouchable | |
| 2021 but is not deleted; if you save the buffer in a file, the invisible | |
| 2022 text is included in the file. \\[widen] makes all visible again. | |
| 2023 If BUFFER is nil, the current buffer is assumed. | |
| 2024 See also `save-restriction'. | |
| 2025 | |
| 2026 When calling from a program, pass two arguments; positions (integers | |
| 2027 or markers) bounding the text that should remain visible. | |
| 2028 */ | |
| 444 | 2029 (start, end, buffer)) |
| 428 | 2030 { |
| 826 | 2031 Charbpos char_start, char_end; |
| 428 | 2032 struct buffer *buf = decode_buffer (buffer, 1); |
| 826 | 2033 Bytebpos byte_start, byte_end; |
| 428 | 2034 |
| 826 | 2035 get_buffer_range_char (buf, start, end, &char_start, &char_end, |
| 444 | 2036 GB_ALLOW_PAST_ACCESSIBLE); |
| 826 | 2037 byte_start = charbpos_to_bytebpos (buf, char_start); |
| 2038 byte_end = charbpos_to_bytebpos (buf, char_end); | |
| 428 | 2039 |
| 826 | 2040 SET_BOTH_BUF_BEGV (buf, char_start, byte_start); |
| 2041 SET_BOTH_BUF_ZV (buf, char_end, byte_end); | |
| 2042 if (BUF_PT (buf) < char_start) | |
| 2043 BUF_SET_PT (buf, char_start); | |
| 2044 if (BUF_PT (buf) > char_end) | |
| 2045 BUF_SET_PT (buf, char_end); | |
| 428 | 2046 MARK_CLIP_CHANGED; |
| 2047 /* Changing the buffer bounds invalidates any recorded current column. */ | |
| 2048 invalidate_current_column (); | |
| 2049 narrow_line_number_cache (buf); | |
| 2050 return Qnil; | |
| 2051 } | |
| 2052 | |
| 2053 Lisp_Object | |
| 844 | 2054 save_restriction_save (struct buffer *buf) |
| 428 | 2055 { |
| 844 | 2056 Lisp_Object bottom = noseeum_make_marker (); |
| 2057 Lisp_Object top = noseeum_make_marker (); | |
| 2058 | |
| 2059 /* Formerly, this function remembered the amount of text on either side | |
| 2060 of the restricted area, in a halfway attempt to account for insertion -- | |
| 2061 it handles insertion inside the old restricted area, but not outside. | |
| 2062 The comment read: | |
| 2063 | |
| 2064 [[ Note: I tried using markers here, but it does not win | |
| 428 | 2065 because insertion at the end of the saved region |
| 844 | 2066 does not advance mh and is considered "outside" the saved region. ]] |
| 2067 | |
| 2068 But that was clearly before the advent of marker-insertion-type. --ben */ | |
| 428 | 2069 |
| 844 | 2070 Fset_marker (bottom, make_int (BUF_BEGV (buf)), wrap_buffer (buf)); |
| 2071 Fset_marker (top, make_int (BUF_ZV (buf)), wrap_buffer (buf)); | |
| 2072 Fset_marker_insertion_type (top, Qt); | |
| 2073 | |
| 2074 return noseeum_cons (wrap_buffer (buf), noseeum_cons (bottom, top)); | |
| 428 | 2075 } |
| 2076 | |
| 2077 Lisp_Object | |
| 2078 save_restriction_restore (Lisp_Object data) | |
| 2079 { | |
| 2080 struct buffer *buf; | |
| 844 | 2081 Lisp_Object markers = XCDR (data); |
| 428 | 2082 int local_clip_changed = 0; |
| 2083 | |
| 2084 buf = XBUFFER (XCAR (data)); | |
| 844 | 2085 /* someone could have killed the buffer in the meantime ... */ |
| 2086 if (BUFFER_LIVE_P (buf)) | |
| 428 | 2087 { |
| 844 | 2088 Charbpos start = marker_position (XCAR (markers)); |
| 2089 Charbpos end = marker_position (XCDR (markers)); | |
| 2090 Bytebpos byte_start = charbpos_to_bytebpos (buf, start); | |
| 2091 Bytebpos byte_end = charbpos_to_bytebpos (buf, end); | |
| 428 | 2092 |
| 844 | 2093 if (BUF_BEGV (buf) != start) |
| 2094 { | |
| 2095 local_clip_changed = 1; | |
| 2096 SET_BOTH_BUF_BEGV (buf, start, byte_start); | |
| 2097 narrow_line_number_cache (buf); | |
| 2098 } | |
| 2099 if (BUF_ZV (buf) != end) | |
| 2100 { | |
| 2101 local_clip_changed = 1; | |
| 2102 SET_BOTH_BUF_ZV (buf, end, byte_end); | |
| 2103 } | |
| 428 | 2104 |
| 844 | 2105 if (local_clip_changed) |
| 2106 MARK_CLIP_CHANGED; | |
| 2107 | |
| 2108 /* If point is outside the new visible range, move it inside. */ | |
| 2109 BUF_SET_PT (buf, charbpos_clip_to_bounds (BUF_BEGV (buf), BUF_PT (buf), | |
| 2110 BUF_ZV (buf))); | |
| 428 | 2111 } |
| 2112 | |
| 844 | 2113 /* Free all the junk we allocated, so that a `save-restriction' comes |
| 2114 for free in terms of GC junk. */ | |
| 1204 | 2115 free_marker (XCAR (markers)); |
| 2116 free_marker (XCDR (markers)); | |
| 853 | 2117 free_cons (markers); |
| 2118 free_cons (data); | |
| 428 | 2119 |
| 2120 return Qnil; | |
| 2121 } | |
| 2122 | |
| 2123 DEFUN ("save-restriction", Fsave_restriction, 0, UNEVALLED, 0, /* | |
| 2124 Execute BODY, saving and restoring current buffer's restrictions. | |
| 2125 The buffer's restrictions make parts of the beginning and end invisible. | |
| 2126 \(They are set up with `narrow-to-region' and eliminated with `widen'.) | |
| 2127 This special form, `save-restriction', saves the current buffer's restrictions | |
| 2128 when it is entered, and restores them when it is exited. | |
| 2129 So any `narrow-to-region' within BODY lasts only until the end of the form. | |
| 2130 The old restrictions settings are restored | |
| 2131 even in case of abnormal exit (throw or error). | |
| 2132 | |
| 2133 The value returned is the value of the last form in BODY. | |
| 2134 | |
| 844 | 2135 As of XEmacs 22.0, `save-restriction' correctly handles all modifications |
| 2136 made within BODY. (Formerly, it got confused if, within the BODY, you | |
| 2137 widened and then made changes outside the old restricted area.) | |
| 428 | 2138 |
| 2139 Note: if you are using both `save-excursion' and `save-restriction', | |
| 2140 use `save-excursion' outermost: | |
| 2141 (save-excursion (save-restriction ...)) | |
| 2142 */ | |
| 2143 (body)) | |
| 2144 { | |
| 2145 /* This function can GC */ | |
| 844 | 2146 int speccount = |
| 2147 record_unwind_protect (save_restriction_restore, | |
| 2148 save_restriction_save (current_buffer)); | |
| 428 | 2149 |
| 771 | 2150 return unbind_to_1 (speccount, Fprogn (body)); |
| 428 | 2151 } |
| 2152 | |
| 2153 | |
| 2154 DEFUN ("format", Fformat, 1, MANY, 0, /* | |
| 2155 Format a string out of a control-string and arguments. | |
| 2156 The first argument is a control string. | |
| 2157 The other arguments are substituted into it to make the result, a string. | |
| 2158 It may contain %-sequences meaning to substitute the next argument. | |
| 2159 %s means print all objects as-is, using `princ'. | |
| 2160 %S means print all objects as s-expressions, using `prin1'. | |
| 2161 %d or %i means print as an integer in decimal (%o octal, %x lowercase hex, | |
|
4329
d9eb5ea14f65
Provide %b in #'format; use it for converting between ints and bit vectors.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4266
diff
changeset
|
2162 %X uppercase hex, %b binary). |
| 428 | 2163 %c means print as a single character. |
| 2164 %f means print as a floating-point number in fixed notation (e.g. 785.200). | |
| 2165 %e or %E means print as a floating-point number in scientific notation | |
| 2166 (e.g. 7.85200e+03). | |
| 2167 %g or %G means print as a floating-point number in "pretty format"; | |
| 2168 depending on the number, either %f or %e/%E format will be used, and | |
| 2169 trailing zeroes are removed from the fractional part. | |
| 2170 The argument used for all but %s and %S must be a number. It will be | |
| 2171 converted to an integer or a floating-point number as necessary. | |
| 2172 | |
| 2173 %$ means reposition to read a specific numbered argument; for example, | |
| 2174 %3$s would apply the `%s' to the third argument after the control string, | |
| 2175 and the next format directive would use the fourth argument, the | |
| 2176 following one the fifth argument, etc. (There must be a positive integer | |
| 2177 between the % and the $). | |
| 2178 Zero or more of the flag characters `-', `+', ` ', `0', and `#' may be | |
| 2179 specified between the optional repositioning spec and the conversion | |
| 2180 character; see below. | |
| 2181 An optional minimum field width may be specified after any flag characters | |
| 2182 and before the conversion character; it specifies the minimum number of | |
| 2183 characters that the converted argument will take up. Padding will be | |
| 2184 added on the left (or on the right, if the `-' flag is specified), as | |
| 2185 necessary. Padding is done with spaces, or with zeroes if the `0' flag | |
| 2186 is specified. | |
| 2187 If the field width is specified as `*', the field width is assumed to have | |
| 2188 been specified as an argument. Any repositioning specification that | |
| 2189 would normally specify the argument to be converted will now specify | |
| 2190 where to find this field width argument, not where to find the argument | |
| 2191 to be converted. If there is no repositioning specification, the normal | |
| 2192 next argument is used. The argument to be converted will be the next | |
| 2193 argument after the field width argument unless the precision is also | |
| 2194 specified as `*' (see below). | |
| 2195 | |
| 2196 An optional period character and precision may be specified after any | |
| 2197 minimum field width. It specifies the minimum number of digits to | |
| 2198 appear in %d, %i, %o, %x, and %X conversions (the number is padded | |
| 2199 on the left with zeroes as necessary); the number of digits printed | |
| 2200 after the decimal point for %f, %e, and %E conversions; the number | |
| 2201 of significant digits printed in %g and %G conversions; and the | |
| 2202 maximum number of non-padding characters printed in %s and %S | |
| 2203 conversions. The default precision for floating-point conversions | |
| 2204 is six. | |
| 2205 If the precision is specified as `*', the precision is assumed to have been | |
| 2206 specified as an argument. The argument used will be the next argument | |
| 2207 after the field width argument, if any. If the field width was not | |
| 2208 specified as an argument, any repositioning specification that would | |
| 2209 normally specify the argument to be converted will now specify where to | |
| 2210 find the precision argument. If there is no repositioning specification, | |
| 2211 the normal next argument is used. | |
| 2212 | |
| 2213 The ` ' and `+' flags mean prefix non-negative numbers with a space or | |
| 2214 plus sign, respectively. | |
| 2215 The `#' flag means print numbers in an alternate, more verbose format: | |
| 2216 octal numbers begin with zero; hex numbers begin with a 0x or 0X; | |
| 2217 a decimal point is printed in %f, %e, and %E conversions even if no | |
| 2218 numbers are printed after it; and trailing zeroes are not omitted in | |
| 2219 %g and %G conversions. | |
| 2220 | |
| 2221 Use %% to put a single % into the output. | |
| 2222 */ | |
| 2223 (int nargs, Lisp_Object *args)) | |
| 2224 { | |
| 2225 /* It should not be necessary to GCPRO ARGS, because | |
| 2226 the caller in the interpreter should take care of that. */ | |
| 2227 | |
| 2228 CHECK_STRING (args[0]); | |
| 771 | 2229 return emacs_vsprintf_string_lisp (0, args[0], nargs - 1, args + 1); |
| 428 | 2230 } |
| 2231 | |
| 2232 | |
| 2233 DEFUN ("char-equal", Fchar_equal, 2, 3, 0, /* | |
| 2234 Return t if two characters match, optionally ignoring case. | |
| 2235 Both arguments must be characters (i.e. NOT integers). | |
| 2236 Case is ignored if `case-fold-search' is non-nil in BUFFER. | |
| 2237 If BUFFER is nil, the current buffer is assumed. | |
| 2238 */ | |
| 444 | 2239 (character1, character2, buffer)) |
| 428 | 2240 { |
| 867 | 2241 Ichar x1, x2; |
| 428 | 2242 struct buffer *b = decode_buffer (buffer, 1); |
| 2243 | |
| 444 | 2244 CHECK_CHAR_COERCE_INT (character1); |
| 2245 CHECK_CHAR_COERCE_INT (character2); | |
| 2246 x1 = XCHAR (character1); | |
| 2247 x2 = XCHAR (character2); | |
| 428 | 2248 |
| 2249 return (!NILP (b->case_fold_search) | |
| 2250 ? DOWNCASE (b, x1) == DOWNCASE (b, x2) | |
| 2251 : x1 == x2) | |
| 2252 ? Qt : Qnil; | |
| 2253 } | |
| 2254 | |
| 434 | 2255 DEFUN ("char=", Fchar_Equal, 2, 2, 0, /* |
| 428 | 2256 Return t if two characters match, case is significant. |
| 2257 Both arguments must be characters (i.e. NOT integers). | |
| 2258 */ | |
| 444 | 2259 (character1, character2)) |
| 428 | 2260 { |
| 444 | 2261 CHECK_CHAR_COERCE_INT (character1); |
| 2262 CHECK_CHAR_COERCE_INT (character2); | |
| 428 | 2263 |
| 444 | 2264 return EQ (character1, character2) ? Qt : Qnil; |
| 428 | 2265 } |
| 2266 | |
| 2267 #if 0 /* Undebugged FSFmacs code */ | |
| 2268 /* Transpose the markers in two regions of the current buffer, and | |
| 2269 adjust the ones between them if necessary (i.e.: if the regions | |
| 2270 differ in size). | |
| 2271 | |
| 2272 Traverses the entire marker list of the buffer to do so, adding an | |
| 2273 appropriate amount to some, subtracting from some, and leaving the | |
| 2274 rest untouched. Most of this is copied from adjust_markers in insdel.c. | |
| 2275 | |
| 2276 It's the caller's job to see that (start1 <= end1 <= start2 <= end2). */ | |
| 2277 | |
| 2278 void | |
| 665 | 2279 transpose_markers (Charbpos start1, Charbpos end1, Charbpos start2, Charbpos end2) |
| 428 | 2280 { |
| 2281 Charcount amt1, amt2, diff; | |
| 2282 Lisp_Object marker; | |
| 2283 struct buffer *buf = current_buffer; | |
| 2284 | |
| 2285 /* Update point as if it were a marker. */ | |
| 2286 if (BUF_PT (buf) < start1) | |
| 2287 ; | |
| 2288 else if (BUF_PT (buf) < end1) | |
| 2289 BUF_SET_PT (buf, BUF_PT (buf) + (end2 - end1)); | |
| 2290 else if (BUF_PT (buf) < start2) | |
| 2291 BUF_SET_PT (buf, BUF_PT (buf) + (end2 - start2) - (end1 - start1)); | |
| 2292 else if (BUF_PT (buf) < end2) | |
| 2293 BUF_SET_PT (buf, BUF_PT (buf) - (start2 - start1)); | |
| 2294 | |
| 2295 /* We used to adjust the endpoints here to account for the gap, but that | |
| 2296 isn't good enough. Even if we assume the caller has tried to move the | |
| 2297 gap out of our way, it might still be at start1 exactly, for example; | |
| 2298 and that places it `inside' the interval, for our purposes. The amount | |
| 2299 of adjustment is nontrivial if there's a `denormalized' marker whose | |
| 2300 position is between GPT and GPT + GAP_SIZE, so it's simpler to leave | |
| 2301 the dirty work to Fmarker_position, below. */ | |
| 2302 | |
| 2303 /* The difference between the region's lengths */ | |
| 2304 diff = (end2 - start2) - (end1 - start1); | |
| 2305 | |
| 2306 /* For shifting each marker in a region by the length of the other | |
| 2307 * region plus the distance between the regions. | |
| 2308 */ | |
| 2309 amt1 = (end2 - start2) + (start2 - end1); | |
| 2310 amt2 = (end1 - start1) + (start2 - end1); | |
| 2311 | |
| 2312 for (marker = BUF_MARKERS (buf); !NILP (marker); | |
| 2313 marker = XMARKER (marker)->chain) | |
| 2314 { | |
| 665 | 2315 Charbpos mpos = marker_position (marker); |
| 428 | 2316 if (mpos >= start1 && mpos < end2) |
| 2317 { | |
| 2318 if (mpos < end1) | |
| 2319 mpos += amt1; | |
| 2320 else if (mpos < start2) | |
| 2321 mpos += diff; | |
| 2322 else | |
| 2323 mpos -= amt2; | |
| 2324 set_marker_position (marker, mpos); | |
| 2325 } | |
| 2326 } | |
| 2327 } | |
| 2328 | |
| 2329 #endif /* 0 */ | |
| 2330 | |
| 2331 DEFUN ("transpose-regions", Ftranspose_regions, 4, 5, 0, /* | |
| 2332 Transpose region START1 to END1 with START2 to END2. | |
| 2333 The regions may not be overlapping, because the size of the buffer is | |
| 2334 never changed in a transposition. | |
| 2335 | |
| 444 | 2336 Optional fifth arg LEAVE-MARKERS, if non-nil, means don't transpose |
| 428 | 2337 any markers that happen to be located in the regions. (#### BUG: currently |
| 444 | 2338 this function always acts as if LEAVE-MARKERS is non-nil.) |
| 428 | 2339 |
| 2340 Transposing beyond buffer boundaries is an error. | |
| 2341 */ | |
| 2286 | 2342 (start1, end1, start2, end2, UNUSED (leave_markers))) |
| 428 | 2343 { |
| 665 | 2344 Charbpos startr1, endr1, startr2, endr2; |
| 428 | 2345 Charcount len1, len2; |
| 2346 Lisp_Object string1, string2; | |
| 2347 struct buffer *buf = current_buffer; | |
| 2348 | |
| 444 | 2349 get_buffer_range_char (buf, start1, end1, &startr1, &endr1, 0); |
| 2350 get_buffer_range_char (buf, start2, end2, &startr2, &endr2, 0); | |
| 428 | 2351 |
| 444 | 2352 len1 = endr1 - startr1; |
| 2353 len2 = endr2 - startr2; | |
| 428 | 2354 |
| 444 | 2355 if (startr2 < endr1) |
| 563 | 2356 invalid_argument ("transposed regions not properly ordered", Qunbound); |
| 444 | 2357 else if (startr1 == endr1 || startr2 == endr2) |
| 563 | 2358 invalid_argument ("transposed region may not be of length 0", Qunbound); |
| 428 | 2359 |
| 444 | 2360 string1 = make_string_from_buffer (buf, startr1, len1); |
| 2361 string2 = make_string_from_buffer (buf, startr2, len2); | |
| 2362 buffer_delete_range (buf, startr2, endr2, 0); | |
| 2363 buffer_insert_lisp_string_1 (buf, startr2, string1, 0); | |
| 2364 buffer_delete_range (buf, startr1, endr1, 0); | |
| 2365 buffer_insert_lisp_string_1 (buf, startr1, string2, 0); | |
| 428 | 2366 |
| 2367 /* In FSFmacs there is a whole bunch of really ugly code here | |
| 2368 to attempt to transpose the regions without using up any | |
| 2369 extra memory. Although the intent may be good, the result | |
| 2370 was highly bogus. */ | |
| 2371 | |
| 2372 return Qnil; | |
| 2373 } | |
| 2374 | |
| 2375 | |
| 2376 /************************************************************************/ | |
| 2377 /* initialization */ | |
| 2378 /************************************************************************/ | |
| 2379 | |
| 2380 void | |
| 2381 syms_of_editfns (void) | |
| 2382 { | |
| 563 | 2383 DEFSYMBOL (Qpoint); |
| 2384 DEFSYMBOL (Qmark); | |
| 2385 DEFSYMBOL (Qregion_beginning); | |
| 2386 DEFSYMBOL (Qregion_end); | |
| 2387 DEFSYMBOL (Qformat); | |
| 2388 DEFSYMBOL (Quser_files_and_directories); | |
| 428 | 2389 |
| 2390 DEFSUBR (Fchar_equal); | |
| 2391 DEFSUBR (Fchar_Equal); | |
| 2392 DEFSUBR (Fgoto_char); | |
| 2393 DEFSUBR (Fstring_to_char); | |
| 2394 DEFSUBR (Fchar_to_string); | |
| 2395 DEFSUBR (Fbuffer_substring); | |
| 2396 DEFSUBR (Fbuffer_substring_no_properties); | |
| 2397 | |
| 2398 DEFSUBR (Fpoint_marker); | |
| 2399 DEFSUBR (Fmark_marker); | |
| 2400 DEFSUBR (Fpoint); | |
| 2401 DEFSUBR (Fregion_beginning); | |
| 2402 DEFSUBR (Fregion_end); | |
| 2403 DEFSUBR (Fsave_excursion); | |
| 2404 DEFSUBR (Fsave_current_buffer); | |
| 2405 | |
| 2406 DEFSUBR (Fbuffer_size); | |
| 2407 DEFSUBR (Fpoint_max); | |
| 2408 DEFSUBR (Fpoint_min); | |
| 2409 DEFSUBR (Fpoint_min_marker); | |
| 2410 DEFSUBR (Fpoint_max_marker); | |
| 2411 | |
| 2412 DEFSUBR (Fbobp); | |
| 2413 DEFSUBR (Feobp); | |
| 2414 DEFSUBR (Fbolp); | |
| 2415 DEFSUBR (Feolp); | |
| 2416 DEFSUBR (Ffollowing_char); | |
| 2417 DEFSUBR (Fpreceding_char); | |
| 2418 DEFSUBR (Fchar_after); | |
| 2419 DEFSUBR (Fchar_before); | |
| 2420 DEFSUBR (Finsert); | |
| 2421 DEFSUBR (Finsert_string); | |
| 2422 DEFSUBR (Finsert_before_markers); | |
| 2423 DEFSUBR (Finsert_char); | |
| 2424 | |
| 2425 DEFSUBR (Ftemp_directory); | |
| 2426 DEFSUBR (Fuser_login_name); | |
| 2427 DEFSUBR (Fuser_real_login_name); | |
| 2428 DEFSUBR (Fuser_uid); | |
| 2429 DEFSUBR (Fuser_real_uid); | |
| 2430 DEFSUBR (Fuser_full_name); | |
| 2431 DEFSUBR (Fuser_home_directory); | |
| 2432 DEFSUBR (Femacs_pid); | |
| 2433 DEFSUBR (Fcurrent_time); | |
| 2434 DEFSUBR (Fcurrent_process_time); | |
| 2435 DEFSUBR (Fformat_time_string); | |
| 2436 DEFSUBR (Fdecode_time); | |
| 2437 DEFSUBR (Fencode_time); | |
| 2438 DEFSUBR (Fcurrent_time_string); | |
| 2439 DEFSUBR (Fcurrent_time_zone); | |
| 2440 DEFSUBR (Fset_time_zone_rule); | |
| 2441 DEFSUBR (Fsystem_name); | |
| 2442 DEFSUBR (Fformat); | |
| 2443 | |
| 2444 DEFSUBR (Finsert_buffer_substring); | |
| 2445 DEFSUBR (Fcompare_buffer_substrings); | |
| 2446 DEFSUBR (Fsubst_char_in_region); | |
| 2447 DEFSUBR (Ftranslate_region); | |
| 2448 DEFSUBR (Fdelete_region); | |
| 2449 DEFSUBR (Fwiden); | |
| 2450 DEFSUBR (Fnarrow_to_region); | |
| 2451 DEFSUBR (Fsave_restriction); | |
| 2452 DEFSUBR (Ftranspose_regions); | |
| 2453 | |
| 563 | 2454 DEFSYMBOL (Qzmacs_update_region); |
| 2455 DEFSYMBOL (Qzmacs_deactivate_region); | |
| 2456 DEFSYMBOL (Qzmacs_region_buffer); | |
| 428 | 2457 } |
| 2458 | |
| 2459 void | |
| 2460 vars_of_editfns (void) | |
| 2461 { | |
| 2462 staticpro (&Vsystem_name); | |
| 2463 #if 0 | |
| 2464 staticpro (&Vuser_name); | |
| 2465 staticpro (&Vuser_real_name); | |
| 2466 #endif | |
| 2467 DEFVAR_BOOL ("zmacs-regions", &zmacs_regions /* | |
| 2468 *Whether LISPM-style active regions should be used. | |
| 2469 This means that commands which operate on the region (the area between the | |
| 2470 point and the mark) will only work while the region is in the ``active'' | |
| 2471 state, which is indicated by highlighting. Executing most commands causes | |
| 2472 the region to not be in the active state, so (for example) \\[kill-region] will only | |
| 2473 work immediately after activating the region. | |
| 2474 | |
| 2475 More specifically: | |
| 2476 | |
| 2477 - Commands which operate on the region only work if the region is active. | |
| 2478 - Only a very small set of commands cause the region to become active: | |
| 444 | 2479 Those commands whose semantics are to mark an area, like `mark-defun'. |
| 428 | 2480 - The region is deactivated after each command that is executed, except that: |
| 2481 - "Motion" commands do not change whether the region is active or not. | |
| 2482 | |
| 2483 set-mark-command (C-SPC) pushes a mark and activates the region. Moving the | |
| 2484 cursor with normal motion commands (C-n, C-p, etc) will cause the region | |
| 2485 between point and the recently-pushed mark to be highlighted. It will | |
| 2486 remain highlighted until some non-motion command is executed. | |
| 2487 | |
| 2488 exchange-point-and-mark (\\[exchange-point-and-mark]) activates the region. So if you mark a | |
| 2489 region and execute a command that operates on it, you can reactivate the | |
| 2490 same region with \\[exchange-point-and-mark] (or perhaps \\[exchange-point-and-mark] \\[exchange-point-and-mark]) to operate on it | |
| 2491 again. | |
| 2492 | |
| 2493 Generally, commands which push marks as a means of navigation (like | |
| 2494 beginning-of-buffer and end-of-buffer (M-< and M->)) do not activate the | |
| 2495 region. But commands which push marks as a means of marking an area of | |
| 2496 text (like mark-defun (\\[mark-defun]), mark-word (\\[mark-word]) or mark-whole-buffer (\\[mark-whole-buffer])) | |
| 2497 do activate the region. | |
| 2498 | |
| 2499 The way the command loop actually works with regard to deactivating the | |
| 2500 region is as follows: | |
| 2501 | |
| 2502 - If the variable `zmacs-region-stays' has been set to t during the command | |
| 2503 just executed, the region is left alone (this is how the motion commands | |
| 2504 make the region stay around; see the `_' flag in the `interactive' | |
| 2505 specification). `zmacs-region-stays' is reset to nil before each command | |
| 2506 is executed. | |
| 2507 - If the function `zmacs-activate-region' has been called during the command | |
| 2508 just executed, the region is left alone. Very few functions should | |
| 2509 actually call this function. | |
| 2510 - Otherwise, if the region is active, the region is deactivated and | |
| 2511 the `zmacs-deactivate-region-hook' is called. | |
| 2512 */ ); | |
| 2513 /* Zmacs style active regions are now ON by default */ | |
| 2514 zmacs_regions = 1; | |
| 2515 | |
| 2516 DEFVAR_BOOL ("zmacs-region-active-p", &zmacs_region_active_p /* | |
| 2517 Do not alter this. It is for internal use only. | |
| 2518 */ ); | |
| 2519 zmacs_region_active_p = 0; | |
| 2520 | |
| 2521 DEFVAR_BOOL ("zmacs-region-stays", &zmacs_region_stays /* | |
| 2522 Whether the current command will deactivate the region. | |
| 2523 Commands which do not wish to affect whether the region is currently | |
| 2524 highlighted should set this to t. Normally, the region is turned off after | |
| 2525 executing each command that did not explicitly turn it on with the function | |
| 2526 zmacs-activate-region. Setting this to true lets a command be non-intrusive. | |
| 2527 See the variable `zmacs-regions'. | |
| 2528 | |
| 2529 The same effect can be achieved using the `_' interactive specification. | |
| 442 | 2530 |
| 2531 `zmacs-region-stays' is reset to nil before each command is executed. | |
| 428 | 2532 */ ); |
| 2533 zmacs_region_stays = 0; | |
| 2534 | |
| 2535 DEFVAR_BOOL ("atomic-extent-goto-char-p", &atomic_extent_goto_char_p /* | |
| 2536 Do not use this -- it will be going away soon. | |
| 2537 Indicates if `goto-char' has just been run. This information is allegedly | |
| 2538 needed to get the desired behavior for atomic extents and unfortunately | |
| 2539 is not available by any other means. | |
| 2540 */ ); | |
| 2541 atomic_extent_goto_char_p = 0; | |
| 2542 #ifdef AMPERSAND_FULL_NAME | |
| 771 | 2543 Fprovide (intern ("ampersand-full-name")); |
| 428 | 2544 #endif |
| 2545 | |
| 2546 DEFVAR_LISP ("user-full-name", &Vuser_full_name /* | |
| 2547 *The name of the user. | |
| 4266 | 2548 The function `user-full-name' will return the value of this variable, when |
| 2549 called without arguments. | |
| 428 | 2550 This is initialized to the value of the NAME environment variable. |
| 2551 */ ); | |
| 2552 /* Initialized at run-time. */ | |
| 2553 Vuser_full_name = Qnil; | |
| 2554 } |