Mercurial > hg > xemacs-beta
annotate src/editfns.c @ 5258:1ed4cefddd12
Add a couple of extra docstring backslashes, #'format-time-string
2010-09-05 Aidan Kehoe <kehoea@parhasard.net>
* editfns.c (Fformat_time_string):
Use two backslashes so that there is at least one present in the
output of describe function, when describing the Roman month
number syntax in this function's docstring. Thanks for provoking
me to look at this, Stephen Turnbull.
| author | Aidan Kehoe <kehoea@parhasard.net> |
|---|---|
| date | Sun, 05 Sep 2010 19:22:37 +0100 |
| parents | 1537701f08a1 |
| children | af961911bcb2 308d34e9f07d |
| 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 */ | |
|
4953
304aebb79cd3
function renamings to track names of char typedefs
Ben Wing <ben@xemacs.org>
parents:
4952
diff
changeset
|
98 Vuser_full_name = build_istring (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). | |
|
4693
80cd90837ac5
Add argument information to remaining MANY or UNEVALLED C subrs.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4470
diff
changeset
|
373 |
|
80cd90837ac5
Add argument information to remaining MANY or UNEVALLED C subrs.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4470
diff
changeset
|
374 arguments: (&rest BODY) |
| 428 | 375 */ |
| 376 (args)) | |
| 377 { | |
| 378 /* This function can GC */ | |
| 379 int speccount = specpdl_depth (); | |
| 380 | |
| 381 record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
| 382 | |
| 771 | 383 return unbind_to_1 (speccount, Fprogn (args)); |
| 428 | 384 } |
| 385 | |
| 386 Lisp_Object | |
| 387 save_current_buffer_restore (Lisp_Object buffer) | |
| 388 { | |
| 389 struct buffer *buf = XBUFFER (buffer); | |
| 390 /* Avoid signaling an error if the buffer is no longer alive. This | |
| 391 is for consistency with save-excursion. */ | |
| 392 if (BUFFER_LIVE_P (buf)) | |
| 393 set_buffer_internal (buf); | |
| 394 return Qnil; | |
| 395 } | |
| 396 | |
| 397 DEFUN ("save-current-buffer", Fsave_current_buffer, 0, UNEVALLED, 0, /* | |
| 398 Save the current buffer; execute BODY; restore the current buffer. | |
| 399 Executes BODY just like `progn'. | |
|
4693
80cd90837ac5
Add argument information to remaining MANY or UNEVALLED C subrs.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4470
diff
changeset
|
400 |
|
80cd90837ac5
Add argument information to remaining MANY or UNEVALLED C subrs.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4470
diff
changeset
|
401 arguments: (&rest BODY) |
| 428 | 402 */ |
| 403 (args)) | |
| 404 { | |
| 405 /* This function can GC */ | |
| 406 int speccount = specpdl_depth (); | |
| 407 | |
| 408 record_unwind_protect (save_current_buffer_restore, Fcurrent_buffer ()); | |
| 409 | |
| 771 | 410 return unbind_to_1 (speccount, Fprogn (args)); |
| 428 | 411 } |
| 412 | |
| 413 DEFUN ("buffer-size", Fbuffer_size, 0, 1, 0, /* | |
| 414 Return the number of characters in BUFFER. | |
| 415 If BUFFER is nil, the current buffer is assumed. | |
| 416 */ | |
| 417 (buffer)) | |
| 418 { | |
| 419 struct buffer *b = decode_buffer (buffer, 1); | |
| 420 return make_int (BUF_SIZE (b)); | |
| 421 } | |
| 422 | |
| 423 DEFUN ("point-min", Fpoint_min, 0, 1, 0, /* | |
| 424 Return the minimum permissible value of point in BUFFER. | |
| 434 | 425 This is 1, unless narrowing (a buffer restriction) |
| 426 is in effect, in which case it may be greater. | |
| 428 | 427 If BUFFER is nil, the current buffer is assumed. |
| 428 */ | |
| 429 (buffer)) | |
| 430 { | |
| 431 struct buffer *b = decode_buffer (buffer, 1); | |
| 432 return make_int (BUF_BEGV (b)); | |
| 433 } | |
| 434 | |
| 435 DEFUN ("point-min-marker", Fpoint_min_marker, 0, 1, 0, /* | |
| 436 Return a marker to the minimum permissible value of point in BUFFER. | |
| 434 | 437 This is the beginning, unless narrowing (a buffer restriction) |
| 438 is in effect, in which case it may be greater. | |
| 428 | 439 If BUFFER is nil, the current buffer is assumed. |
| 440 */ | |
| 441 (buffer)) | |
| 442 { | |
| 443 struct buffer *b = decode_buffer (buffer, 1); | |
| 771 | 444 return buildmark (BUF_BEGV (b), wrap_buffer (b)); |
| 428 | 445 } |
| 446 | |
| 447 DEFUN ("point-max", Fpoint_max, 0, 1, 0, /* | |
| 448 Return the maximum permissible value of point in BUFFER. | |
| 449 This is (1+ (buffer-size)), unless narrowing (a buffer restriction) | |
| 434 | 450 is in effect, in which case it may be less. |
| 428 | 451 If BUFFER is nil, the current buffer is assumed. |
| 452 */ | |
| 453 (buffer)) | |
| 454 { | |
| 455 struct buffer *b = decode_buffer (buffer, 1); | |
| 456 return make_int (BUF_ZV (b)); | |
| 457 } | |
| 458 | |
| 459 DEFUN ("point-max-marker", Fpoint_max_marker, 0, 1, 0, /* | |
| 434 | 460 Return a marker to the maximum permissible value of point in BUFFER. |
| 428 | 461 This is (1+ (buffer-size)), unless narrowing (a buffer restriction) |
| 434 | 462 is in effect, in which case it may be less. |
| 428 | 463 If BUFFER is nil, the current buffer is assumed. |
| 464 */ | |
| 465 (buffer)) | |
| 466 { | |
| 467 struct buffer *b = decode_buffer (buffer, 1); | |
| 771 | 468 return buildmark (BUF_ZV (b), wrap_buffer (b)); |
| 428 | 469 } |
| 470 | |
| 471 DEFUN ("following-char", Ffollowing_char, 0, 1, 0, /* | |
| 472 Return the character following point. | |
| 473 At the end of the buffer or accessible region, return 0. | |
| 474 If BUFFER is nil, the current buffer is assumed. | |
| 475 */ | |
| 476 (buffer)) | |
| 477 { | |
| 478 struct buffer *b = decode_buffer (buffer, 1); | |
| 479 if (BUF_PT (b) >= BUF_ZV (b)) | |
| 480 return Qzero; /* #### Gag me! */ | |
| 481 else | |
| 482 return make_char (BUF_FETCH_CHAR (b, BUF_PT (b))); | |
| 483 } | |
| 484 | |
| 485 DEFUN ("preceding-char", Fpreceding_char, 0, 1, 0, /* | |
| 486 Return the character preceding point. | |
| 487 At the beginning of the buffer or accessible region, return 0. | |
| 488 If BUFFER is nil, the current buffer is assumed. | |
| 489 */ | |
| 490 (buffer)) | |
| 491 { | |
| 492 struct buffer *b = decode_buffer (buffer, 1); | |
| 493 if (BUF_PT (b) <= BUF_BEGV (b)) | |
| 494 return Qzero; /* #### Gag me! */ | |
| 495 else | |
| 496 return make_char (BUF_FETCH_CHAR (b, BUF_PT (b) - 1)); | |
| 497 } | |
| 498 | |
| 499 DEFUN ("bobp", Fbobp, 0, 1, 0, /* | |
| 500 Return t if point is at the beginning of the buffer. | |
| 501 If the buffer is narrowed, this means the beginning of the narrowed part. | |
| 502 If BUFFER is nil, the current buffer is assumed. | |
| 503 */ | |
| 504 (buffer)) | |
| 505 { | |
| 506 struct buffer *b = decode_buffer (buffer, 1); | |
| 507 return BUF_PT (b) == BUF_BEGV (b) ? Qt : Qnil; | |
| 508 } | |
| 509 | |
| 510 DEFUN ("eobp", Feobp, 0, 1, 0, /* | |
| 511 Return t if point is at the end of the buffer. | |
| 512 If the buffer is narrowed, this means the end of the narrowed part. | |
| 513 If BUFFER is nil, the current buffer is assumed. | |
| 514 */ | |
| 515 (buffer)) | |
| 516 { | |
| 517 struct buffer *b = decode_buffer (buffer, 1); | |
| 518 return BUF_PT (b) == BUF_ZV (b) ? Qt : Qnil; | |
| 519 } | |
| 520 | |
| 521 int | |
| 665 | 522 beginning_of_line_p (struct buffer *b, Charbpos pt) |
| 428 | 523 { |
| 524 return pt <= BUF_BEGV (b) || BUF_FETCH_CHAR (b, pt - 1) == '\n'; | |
| 525 } | |
| 526 | |
| 527 | |
| 528 DEFUN ("bolp", Fbolp, 0, 1, 0, /* | |
| 529 Return t if point is at the beginning of a line. | |
| 530 If BUFFER is nil, the current buffer is assumed. | |
| 531 */ | |
| 532 (buffer)) | |
| 533 { | |
| 534 struct buffer *b = decode_buffer (buffer, 1); | |
| 535 return beginning_of_line_p (b, BUF_PT (b)) ? Qt : Qnil; | |
| 536 } | |
| 537 | |
| 538 DEFUN ("eolp", Feolp, 0, 1, 0, /* | |
| 539 Return t if point is at the end of a line. | |
| 540 `End of a line' includes point being at the end of the buffer. | |
| 541 If BUFFER is nil, the current buffer is assumed. | |
| 542 */ | |
| 543 (buffer)) | |
| 544 { | |
| 545 struct buffer *b = decode_buffer (buffer, 1); | |
| 546 return (BUF_PT (b) == BUF_ZV (b) || BUF_FETCH_CHAR (b, BUF_PT (b)) == '\n') | |
| 547 ? Qt : Qnil; | |
| 548 } | |
| 549 | |
| 550 DEFUN ("char-after", Fchar_after, 0, 2, 0, /* | |
| 434 | 551 Return the character at position POS in BUFFER. |
| 552 POS is an integer or a marker. | |
| 428 | 553 If POS is out of range, the value is nil. |
| 434 | 554 if POS is nil, the value of point is assumed. |
| 428 | 555 If BUFFER is nil, the current buffer is assumed. |
| 556 */ | |
| 557 (pos, buffer)) | |
| 558 { | |
| 559 struct buffer *b = decode_buffer (buffer, 1); | |
| 665 | 560 Charbpos n = (NILP (pos) ? BUF_PT (b) : |
| 428 | 561 get_buffer_pos_char (b, pos, GB_NO_ERROR_IF_BAD)); |
| 562 | |
| 563 if (n < 0 || n == BUF_ZV (b)) | |
| 564 return Qnil; | |
| 565 return make_char (BUF_FETCH_CHAR (b, n)); | |
| 566 } | |
| 567 | |
| 568 DEFUN ("char-before", Fchar_before, 0, 2, 0, /* | |
| 434 | 569 Return the character preceding position POS in BUFFER. |
| 570 POS is an integer or a marker. | |
| 428 | 571 If POS is out of range, the value is nil. |
| 434 | 572 if POS is nil, the value of point is assumed. |
| 428 | 573 If BUFFER is nil, the current buffer is assumed. |
| 574 */ | |
| 575 (pos, buffer)) | |
| 576 { | |
| 577 struct buffer *b = decode_buffer (buffer, 1); | |
| 665 | 578 Charbpos n = (NILP (pos) ? BUF_PT (b) : |
| 434 | 579 get_buffer_pos_char (b, pos, GB_NO_ERROR_IF_BAD)); |
| 428 | 580 |
| 581 n--; | |
| 582 | |
| 583 if (n < BUF_BEGV (b)) | |
| 584 return Qnil; | |
| 585 return make_char (BUF_FETCH_CHAR (b, n)); | |
| 586 } | |
| 587 | |
| 588 | |
| 589 DEFUN ("temp-directory", Ftemp_directory, 0, 0, 0, /* | |
| 590 Return the pathname to the directory to use for temporary files. | |
| 442 | 591 On MS Windows, this is obtained from the TEMP or TMP environment variables, |
| 771 | 592 defaulting to c:\\ if they are both undefined. |
| 444 | 593 On Unix it is obtained from TMPDIR, with /tmp as the default. |
| 428 | 594 */ |
| 595 ()) | |
| 596 { | |
| 867 | 597 Ibyte *tmpdir; |
| 442 | 598 #if defined(WIN32_NATIVE) |
| 771 | 599 tmpdir = egetenv ("TEMP"); |
| 428 | 600 if (!tmpdir) |
| 771 | 601 tmpdir = egetenv ("TMP"); |
| 428 | 602 if (!tmpdir) |
| 867 | 603 tmpdir = (Ibyte *) "c:\\"; |
| 442 | 604 #else /* WIN32_NATIVE */ |
| 771 | 605 tmpdir = egetenv ("TMPDIR"); |
| 428 | 606 if (!tmpdir) |
| 442 | 607 { |
| 608 struct stat st; | |
| 771 | 609 int myuid = getuid (); |
| 867 | 610 Ibyte *login_name = user_login_name (NULL); |
| 771 | 611 DECLARE_EISTRING (eipath); |
| 867 | 612 Ibyte *path; |
| 442 | 613 |
| 2421 | 614 eicpy_ascii (eipath, "/tmp/"); |
| 771 | 615 eicat_rawz (eipath, login_name); |
| 616 path = eidata (eipath); | |
| 617 if (qxe_lstat (path, &st) < 0 && errno == ENOENT) | |
| 618 qxe_mkdir (path, 0700); /* ignore retval -- checked next anyway. */ | |
| 619 if (qxe_lstat (path, &st) == 0 && (int) st.st_uid == myuid | |
| 620 && S_ISDIR (st.st_mode)) | |
| 621 tmpdir = path; | |
| 442 | 622 else |
| 623 { | |
| 771 | 624 eicpy_rawz (eipath, egetenv ("HOME")); |
| 2421 | 625 eicat_ascii (eipath, "/tmp/"); |
| 771 | 626 path = eidata (eipath); |
| 627 if (qxe_stat (path, &st) < 0 && errno == ENOENT) | |
| 442 | 628 { |
| 629 int fd; | |
| 771 | 630 DECLARE_EISTRING (eiwarnpath); |
| 631 | |
| 632 qxe_mkdir (path, 0700); /* ignore retvals */ | |
| 633 eicpy_ei (eiwarnpath, eipath); | |
| 2421 | 634 eicat_ascii (eiwarnpath, ".created_by_xemacs"); |
| 771 | 635 if ((fd = qxe_open (eidata (eiwarnpath), |
| 636 O_WRONLY | O_CREAT, 0644)) > 0) | |
| 442 | 637 { |
| 771 | 638 retry_write (fd, "XEmacs created this directory because " |
| 639 "/tmp/<yourname> was unavailable -- \n" | |
| 640 "Please check !\n", 89); | |
| 641 retry_close (fd); | |
| 442 | 642 } |
| 643 } | |
| 771 | 644 if (qxe_stat (path, &st) == 0 && S_ISDIR (st.st_mode)) |
| 645 tmpdir = path; | |
| 442 | 646 else |
| 867 | 647 tmpdir = (Ibyte *) "/tmp"; |
| 442 | 648 } |
| 649 } | |
| 428 | 650 #endif |
| 651 | |
|
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|
652 return build_istring (tmpdir); |
| 428 | 653 } |
| 654 | |
| 655 DEFUN ("user-login-name", Fuser_login_name, 0, 1, 0, /* | |
| 656 Return the name under which the user logged in, as a string. | |
| 657 This is based on the effective uid, not the real uid. | |
| 658 Also, if the environment variable LOGNAME or USER is set, | |
| 659 that determines the value of this function. | |
| 660 If the optional argument UID is present, then environment variables are | |
| 661 ignored and this function returns the login name for that UID, or nil. | |
| 662 */ | |
| 663 (uid)) | |
| 664 { | |
| 867 | 665 Ibyte *returned_name; |
| 428 | 666 uid_t local_uid; |
| 667 | |
| 668 if (!NILP (uid)) | |
| 669 { | |
| 670 CHECK_INT (uid); | |
| 671 local_uid = XINT (uid); | |
| 672 returned_name = user_login_name (&local_uid); | |
| 673 } | |
| 674 else | |
| 675 { | |
| 676 returned_name = user_login_name (NULL); | |
| 677 } | |
| 678 /* #### - I believe this should return nil instead of "unknown" when pw==0 | |
| 679 pw=0 is indicated by a null return from user_login_name | |
| 680 */ | |
|
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|
681 return returned_name ? build_istring (returned_name) : Qnil; |
| 428 | 682 } |
| 683 | |
| 684 /* This function may be called from other C routines when a | |
| 685 character string representation of the user_login_name is | |
| 686 needed but a Lisp Object is not. The UID is passed by | |
| 687 reference. If UID == NULL, then the USER name | |
| 688 for the user running XEmacs will be returned. This | |
| 689 corresponds to a nil argument to Fuser_login_name. | |
| 771 | 690 |
| 793 | 691 WARNING: The string returned comes from the data of a Lisp string and |
| 771 | 692 therefore will become garbage after the next GC. |
| 428 | 693 */ |
| 867 | 694 Ibyte * |
| 428 | 695 user_login_name (uid_t *uid) |
| 696 { | |
| 697 /* uid == NULL to return name of this user */ | |
| 698 if (uid != NULL) | |
| 699 { | |
| 771 | 700 struct passwd *pw = qxe_getpwuid (*uid); |
| 867 | 701 return pw ? (Ibyte *) pw->pw_name : NULL; |
| 428 | 702 } |
| 703 else | |
| 704 { | |
| 705 /* #### - when euid != uid, then LOGNAME and USER are leftovers from the | |
| 706 old environment (I site observed behavior on sunos and linux), so the | |
| 707 environment variables should be disregarded in that case. --Stig */ | |
| 867 | 708 Ibyte *user_name = egetenv ("LOGNAME"); |
| 428 | 709 if (!user_name) |
| 771 | 710 user_name = egetenv ( |
| 442 | 711 #ifdef WIN32_NATIVE |
| 428 | 712 "USERNAME" /* it's USERNAME on NT */ |
| 713 #else | |
| 714 "USER" | |
| 715 #endif | |
| 716 ); | |
| 717 if (user_name) | |
| 771 | 718 return user_name; |
| 428 | 719 else |
| 720 { | |
| 771 | 721 struct passwd *pw = qxe_getpwuid (geteuid ()); |
| 442 | 722 #ifdef CYGWIN |
| 428 | 723 /* Since the Cygwin environment may not have an /etc/passwd, |
| 724 return "unknown" instead of the null if the username | |
| 725 cannot be determined. | |
| 726 */ | |
| 593 | 727 /* !!#### fix up in my mule ws */ |
| 867 | 728 return (Ibyte *) (pw ? pw->pw_name : "unknown"); |
| 428 | 729 #else |
| 730 /* For all but Cygwin return NULL (nil) */ | |
| 1204 | 731 return pw ? (Ibyte *) pw->pw_name : NULL; |
| 428 | 732 #endif |
| 733 } | |
| 734 } | |
| 735 } | |
| 736 | |
| 737 DEFUN ("user-real-login-name", Fuser_real_login_name, 0, 0, 0, /* | |
| 738 Return the name of the user's real uid, as a string. | |
| 739 This ignores the environment variables LOGNAME and USER, so it differs from | |
| 740 `user-login-name' when running under `su'. | |
| 741 */ | |
| 742 ()) | |
| 743 { | |
| 771 | 744 struct passwd *pw = qxe_getpwuid (getuid ()); |
| 428 | 745 /* #### - I believe this should return nil instead of "unknown" when pw==0 */ |
| 746 | |
|
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diff
changeset
|
747 return build_extstring (pw ? pw->pw_name : "unknown", Quser_name_encoding); |
| 428 | 748 } |
| 749 | |
| 750 DEFUN ("user-uid", Fuser_uid, 0, 0, 0, /* | |
| 751 Return the effective uid of Emacs, as an integer. | |
| 752 */ | |
| 753 ()) | |
| 754 { | |
| 755 return make_int (geteuid ()); | |
| 756 } | |
| 757 | |
| 758 DEFUN ("user-real-uid", Fuser_real_uid, 0, 0, 0, /* | |
| 759 Return the real uid of Emacs, as an integer. | |
| 760 */ | |
| 761 ()) | |
| 762 { | |
| 763 return make_int (getuid ()); | |
| 764 } | |
| 765 | |
| 766 DEFUN ("user-full-name", Fuser_full_name, 0, 1, 0, /* | |
| 767 Return the full name of the user logged in, as a string. | |
| 768 If the optional argument USER is given, then the full name for that | |
| 769 user is returned, or nil. USER may be either a login name or a uid. | |
| 770 | |
| 771 If USER is nil, and `user-full-name' contains a string, the | |
| 772 value of `user-full-name' is returned. | |
| 773 */ | |
| 774 (user)) | |
| 775 { | |
| 776 Lisp_Object user_name; | |
| 777 struct passwd *pw = NULL; | |
| 778 Lisp_Object tem; | |
| 867 | 779 const Ibyte *p, *q; |
| 428 | 780 |
| 781 if (NILP (user) && STRINGP (Vuser_full_name)) | |
| 782 return Vuser_full_name; | |
| 783 | |
| 784 user_name = (STRINGP (user) ? user : Fuser_login_name (user)); | |
| 785 if (!NILP (user_name)) /* nil when nonexistent UID passed as arg */ | |
| 786 { | |
| 787 /* Fuck me. getpwnam() can call select() and (under IRIX at least) | |
| 788 things get wedged if a SIGIO arrives during this time. */ | |
| 789 slow_down_interrupts (); | |
| 771 | 790 pw = qxe_getpwnam (XSTRING_DATA (user_name)); |
| 428 | 791 speed_up_interrupts (); |
| 792 } | |
| 793 | |
| 794 /* #### - Stig sez: this should return nil instead of "unknown" when pw==0 */ | |
| 795 /* Ben sez: bad idea because it's likely to break something */ | |
| 796 #ifndef AMPERSAND_FULL_NAME | |
| 867 | 797 p = (Ibyte *) (pw ? USER_FULL_NAME : "unknown"); /* don't gettext */ |
| 771 | 798 q = qxestrchr (p, ','); |
| 428 | 799 #else |
| 867 | 800 p = (Ibyte *) (pw ? USER_FULL_NAME : "unknown"); /* don't gettext */ |
| 771 | 801 q = qxestrchr (p, ','); |
| 428 | 802 #endif |
| 803 tem = ((!NILP (user) && !pw) | |
| 804 ? Qnil | |
| 814 | 805 : make_string (p, (q ? (Bytecount) (q - p) : qxestrlen (p)))); |
| 428 | 806 |
| 807 #ifdef AMPERSAND_FULL_NAME | |
| 808 if (!NILP (tem)) | |
| 809 { | |
| 771 | 810 p = XSTRING_DATA (tem); |
| 811 q = qxestrchr (p, '&'); | |
| 428 | 812 /* Substitute the login name for the &, upcasing the first character. */ |
| 813 if (q) | |
| 814 { | |
| 771 | 815 DECLARE_EISTRING (r); |
| 816 eicpy_raw (r, p, q - p); | |
| 817 eicat_lstr (r, user_name); | |
| 818 eisetch (r, q - p, UPCASE (0, eigetch (r, q - p))); | |
| 819 eicat_rawz (r, q + 1); | |
| 820 tem = eimake_string (r); | |
| 428 | 821 } |
| 822 } | |
| 823 #endif /* AMPERSAND_FULL_NAME */ | |
| 824 | |
| 825 return tem; | |
| 826 } | |
| 827 | |
| 867 | 828 static Ibyte *cached_home_directory; |
| 428 | 829 |
| 830 void | |
| 831 uncache_home_directory (void) | |
| 832 { | |
| 771 | 833 if (cached_home_directory) |
|
4976
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Rename xfree(FOO, TYPE) -> xfree(FOO)
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4962
diff
changeset
|
834 xfree (cached_home_directory); |
| 771 | 835 cached_home_directory = NULL; |
| 428 | 836 } |
| 837 | |
| 771 | 838 /* Returns the home directory */ |
| 867 | 839 Ibyte * |
| 428 | 840 get_home_directory (void) |
| 841 { | |
| 842 int output_home_warning = 0; | |
| 843 | |
| 844 if (cached_home_directory == NULL) | |
| 845 { | |
| 771 | 846 cached_home_directory = egetenv ("HOME"); |
| 847 if (cached_home_directory) | |
| 848 cached_home_directory = qxestrdup (cached_home_directory); | |
| 849 else | |
| 428 | 850 { |
| 771 | 851 #if defined (WIN32_NATIVE) |
| 867 | 852 Ibyte *homedrive, *homepath; |
| 428 | 853 |
| 771 | 854 if ((homedrive = egetenv ("HOMEDRIVE")) != NULL && |
| 855 (homepath = egetenv ("HOMEPATH")) != NULL) | |
| 428 | 856 { |
| 857 cached_home_directory = | |
| 2367 | 858 xnew_ibytes (qxestrlen (homedrive) + qxestrlen (homepath) + |
| 859 ITEXT_ZTERM_SIZE); | |
| 771 | 860 qxesprintf (cached_home_directory, "%s%s", |
| 861 homedrive, | |
| 862 homepath); | |
| 428 | 863 } |
| 864 else | |
|
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No need to fatal () on startup if $PWD doesn't exist; chdir to "/" instead.
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diff
changeset
|
865 #endif /* !WIN32_NATIVE */ |
| 428 | 866 { |
|
4733
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No need to fatal () on startup if $PWD doesn't exist; chdir to "/" instead.
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parents:
4693
diff
changeset
|
867 /* Unix, typically. |
|
a5210e70ffbe
No need to fatal () on startup if $PWD doesn't exist; chdir to "/" instead.
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parents:
4693
diff
changeset
|
868 Using "/" isn't quite right, but what should we do? |
|
a5210e70ffbe
No need to fatal () on startup if $PWD doesn't exist; chdir to "/" instead.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4693
diff
changeset
|
869 We probably should try to extract pw_dir from /etc/passwd, |
|
a5210e70ffbe
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Aidan Kehoe <kehoea@parhasard.net>
parents:
4693
diff
changeset
|
870 before falling back to this. */ |
|
4736
d261888e5069
Fix Win32 native build after my DEFAULT_DIRECTORY_FALLBACK change, thanks Vin!
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diff
changeset
|
871 cached_home_directory |
|
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4834
diff
changeset
|
872 = qxestrdup ((const Ibyte *) DEFAULT_DIRECTORY_FALLBACK); |
| 428 | 873 output_home_warning = 1; |
| 874 } | |
| 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 : |
|
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|
898 Fexpand_file_name (Fsubstitute_in_file_name (build_istring (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. |
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1047 %\\xe6 is replaced by the month as a lowercase Roman number (i-xii) |
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1048 %\\xc6 is replaced by the month as an uppercase Roman number (I-XII) |
| 428 | 1049 |
| 1050 The number of options reflects the `strftime' function. | |
| 1051 */ | |
| 1052 (format_string, time_)) | |
| 1053 { | |
| 1054 time_t value; | |
| 665 | 1055 Bytecount size; |
| 428 | 1056 |
| 1057 CHECK_STRING (format_string); | |
| 1058 | |
| 1059 if (! lisp_to_time (time_, &value)) | |
| 563 | 1060 invalid_argument ("Invalid time specification", Qunbound); |
| 428 | 1061 |
| 1062 /* This is probably enough. */ | |
| 1063 size = XSTRING_LENGTH (format_string) * 6 + 50; | |
| 1064 | |
| 1065 while (1) | |
| 1066 { | |
| 2367 | 1067 Extbyte *buf = alloca_extbytes (size); |
| 771 | 1068 Extbyte *formext; |
| 4203 | 1069 /* make a copy of the static buffer returned by localtime() */ |
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1070 struct tm tm = *localtime (&value); |
| 4203 | 1071 |
| 428 | 1072 *buf = 1; |
| 771 | 1073 |
| 1074 /* !!#### this use of external here is not totally safe, and | |
| 1075 potentially data lossy. */ | |
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1076 formext = LISP_STRING_TO_EXTERNAL (format_string, |
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1077 Qtime_function_encoding); |
| 4203 | 1078 if (emacs_strftime (buf, size, formext, &tm) |
| 428 | 1079 || !*buf) |
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1080 return build_extstring (buf, Qtime_function_encoding); |
| 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, /* |
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1142 Convert SECOND, MINUTE, HOUR, DAY, MONTH, YEAR and ZONE to internal time. |
| 428 | 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. | |
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1158 |
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1159 arguments: (SECOND MINUTE HOUR DAY MONTH YEAR &optional ZONE &rest REST) |
| 428 | 1160 */ |
| 1161 (int nargs, Lisp_Object *args)) | |
| 1162 { | |
| 1163 time_t the_time; | |
| 1164 struct tm tm; | |
| 1165 Lisp_Object zone = (nargs > 6) ? args[nargs - 1] : Qnil; | |
| 1166 | |
| 1167 CHECK_INT (*args); tm.tm_sec = XINT (*args++); /* second */ | |
| 1168 CHECK_INT (*args); tm.tm_min = XINT (*args++); /* minute */ | |
| 1169 CHECK_INT (*args); tm.tm_hour = XINT (*args++); /* hour */ | |
| 1170 CHECK_INT (*args); tm.tm_mday = XINT (*args++); /* day */ | |
| 1171 CHECK_INT (*args); tm.tm_mon = XINT (*args++) - 1; /* month */ | |
| 1172 CHECK_INT (*args); tm.tm_year = XINT (*args++) - 1900;/* year */ | |
| 1173 | |
| 1174 tm.tm_isdst = -1; | |
| 1175 | |
| 1176 if (CONSP (zone)) | |
| 1177 zone = XCAR (zone); | |
| 1178 if (NILP (zone)) | |
| 1179 the_time = mktime (&tm); | |
| 1180 else | |
| 1181 { | |
| 771 | 1182 /* #### This business of modifying environ is horrendous! |
| 1183 Why don't we just putenv()? Why don't we implement our own | |
| 1184 funs that don't require this futzing? */ | |
| 1185 Extbyte tzbuf[100]; | |
| 1186 Extbyte *tzstring; | |
| 1187 Extbyte **oldenv = environ, **newenv; | |
| 428 | 1188 |
| 1189 if (STRINGP (zone)) | |
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1190 tzstring = LISP_STRING_TO_EXTERNAL (zone, Qtime_zone_encoding); |
| 428 | 1191 else if (INTP (zone)) |
| 1192 { | |
| 1193 int abszone = abs (XINT (zone)); | |
| 1194 sprintf (tzbuf, "XXX%s%d:%02d:%02d", "-" + (XINT (zone) < 0), | |
| 1195 abszone / (60*60), (abszone/60) % 60, abszone % 60); | |
| 1196 tzstring = tzbuf; | |
| 1197 } | |
| 1198 else | |
| 771 | 1199 invalid_argument ("Invalid time zone specification", Qunbound); |
| 428 | 1200 |
| 1201 /* Set TZ before calling mktime; merely adjusting mktime's returned | |
| 1202 value doesn't suffice, since that would mishandle leap seconds. */ | |
| 1203 set_time_zone_rule (tzstring); | |
| 1204 | |
| 1205 the_time = mktime (&tm); | |
| 1206 | |
| 1207 /* Restore TZ to previous value. */ | |
| 1208 newenv = environ; | |
| 1209 environ = oldenv; | |
| 1210 free (newenv); | |
| 1211 #ifdef LOCALTIME_CACHE | |
| 1212 tzset (); | |
| 1213 #endif | |
| 1214 } | |
| 1215 | |
| 1216 if (the_time == (time_t) -1) | |
| 563 | 1217 invalid_argument ("Specified time is not representable", Qunbound); |
| 428 | 1218 |
| 707 | 1219 return make_time (the_time); |
| 428 | 1220 } |
| 1221 | |
| 1222 DEFUN ("current-time-string", Fcurrent_time_string, 0, 1, 0, /* | |
| 1223 Return the current time, as a human-readable string. | |
| 1224 Programs can use this function to decode a time, | |
| 1225 since the number of columns in each field is fixed. | |
| 1226 The format is `Sun Sep 16 01:03:52 1973'. | |
| 1227 If an argument is given, it specifies a time to format | |
| 1228 instead of the current time. The argument should have the form: | |
| 1229 (HIGH . LOW) | |
| 1230 or the form: | |
| 1231 (HIGH LOW . IGNORED). | |
| 1232 Thus, you can use times obtained from `current-time' | |
| 1233 and from `file-attributes'. | |
| 1234 */ | |
| 1235 (specified_time)) | |
| 1236 { | |
| 1237 time_t value; | |
| 867 | 1238 Ibyte *the_ctime; |
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1239 EMACS_INT len; /* this is what make_extstring() accepts; #### |
| 665 | 1240 should it be an Bytecount? */ |
| 428 | 1241 |
| 1242 if (! lisp_to_time (specified_time, &value)) | |
| 1243 value = -1; | |
| 771 | 1244 the_ctime = qxe_ctime (&value); |
| 428 | 1245 |
| 442 | 1246 /* ctime is documented as always returning a "\n\0"-terminated |
| 1247 26-byte American time string, but let's be careful anyways. */ | |
| 1248 for (len = 0; the_ctime[len] != '\n' && the_ctime[len] != '\0'; len++) | |
| 1249 ; | |
| 428 | 1250 |
| 771 | 1251 return make_string (the_ctime, len); |
| 428 | 1252 } |
| 1253 | |
| 1254 #define TM_YEAR_ORIGIN 1900 | |
| 1255 | |
| 1256 /* Yield A - B, measured in seconds. */ | |
| 1257 static long | |
| 442 | 1258 difftm (const struct tm *a, const struct tm *b) |
| 428 | 1259 { |
| 1260 int ay = a->tm_year + (TM_YEAR_ORIGIN - 1); | |
| 1261 int by = b->tm_year + (TM_YEAR_ORIGIN - 1); | |
| 1262 /* Some compilers can't handle this as a single return statement. */ | |
| 1263 long days = ( | |
| 1264 /* difference in day of year */ | |
| 1265 a->tm_yday - b->tm_yday | |
| 1266 /* + intervening leap days */ | |
| 1267 + ((ay >> 2) - (by >> 2)) | |
| 1268 - (ay/100 - by/100) | |
| 1269 + ((ay/100 >> 2) - (by/100 >> 2)) | |
| 1270 /* + difference in years * 365 */ | |
| 1271 + (long)(ay-by) * 365 | |
| 1272 ); | |
| 1273 return (60*(60*(24*days + (a->tm_hour - b->tm_hour)) | |
| 1274 + (a->tm_min - b->tm_min)) | |
| 1275 + (a->tm_sec - b->tm_sec)); | |
| 1276 } | |
| 1277 | |
| 1278 DEFUN ("current-time-zone", Fcurrent_time_zone, 0, 1, 0, /* | |
| 1279 Return the offset and name for the local time zone. | |
| 1280 This returns a list of the form (OFFSET NAME). | |
| 1281 OFFSET is an integer number of seconds ahead of UTC (east of Greenwich). | |
| 1282 A negative value means west of Greenwich. | |
| 1283 NAME is a string giving the name of the time zone. | |
| 1284 If an argument is given, it specifies when the time zone offset is determined | |
| 1285 instead of using the current time. The argument should have the form: | |
| 1286 (HIGH . LOW) | |
| 1287 or the form: | |
| 1288 (HIGH LOW . IGNORED). | |
| 1289 Thus, you can use times obtained from `current-time' | |
| 1290 and from `file-attributes'. | |
| 1291 | |
| 1292 Some operating systems cannot provide all this information to Emacs; | |
| 1293 in this case, `current-time-zone' returns a list containing nil for | |
| 1294 the data it can't find. | |
| 1295 */ | |
| 1296 (specified_time)) | |
| 1297 { | |
| 1298 time_t value; | |
| 1299 struct tm *t = NULL; | |
| 1300 | |
| 1301 if (lisp_to_time (specified_time, &value) | |
| 1302 && (t = gmtime (&value)) != 0) | |
| 1303 { | |
| 1304 struct tm gmt = *t; /* Make a copy, in case localtime modifies *t. */ | |
| 1305 long offset; | |
| 771 | 1306 Extbyte *s; |
| 1307 Lisp_Object tem; | |
| 428 | 1308 |
| 1309 t = localtime (&value); | |
| 1310 offset = difftm (t, &gmt); | |
| 1311 s = 0; | |
| 1312 #ifdef HAVE_TM_ZONE | |
| 1313 if (t->tm_zone) | |
| 771 | 1314 s = (Extbyte *) t->tm_zone; |
| 428 | 1315 #else /* not HAVE_TM_ZONE */ |
| 1316 #ifdef HAVE_TZNAME | |
| 1317 if (t->tm_isdst == 0 || t->tm_isdst == 1) | |
| 1318 s = tzname[t->tm_isdst]; | |
| 1319 #endif | |
| 1320 #endif /* not HAVE_TM_ZONE */ | |
| 771 | 1321 if (s) |
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1322 tem = build_extstring (s, Qtime_zone_encoding); |
| 771 | 1323 else |
| 428 | 1324 { |
| 867 | 1325 Ibyte buf[6]; |
| 771 | 1326 |
| 428 | 1327 /* No local time zone name is available; use "+-NNNN" instead. */ |
| 1328 int am = (offset < 0 ? -offset : offset) / 60; | |
| 771 | 1329 qxesprintf (buf, "%c%02d%02d", (offset < 0 ? '-' : '+'), am/60, |
| 1330 am%60); | |
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1331 tem = build_istring (buf); |
| 428 | 1332 } |
| 771 | 1333 return list2 (make_int (offset), tem); |
| 428 | 1334 } |
| 1335 else | |
| 1336 return list2 (Qnil, Qnil); | |
| 1337 } | |
| 1338 | |
| 1339 #ifdef LOCALTIME_CACHE | |
| 1340 | |
| 1341 /* These two values are known to load tz files in buggy implementations, | |
| 1342 i.e. Solaris 1 executables running under either Solaris 1 or Solaris 2. | |
| 1343 Their values shouldn't matter in non-buggy implementations. | |
| 1344 We don't use string literals for these strings, | |
| 1345 since if a string in the environment is in readonly | |
| 1346 storage, it runs afoul of bugs in SVR4 and Solaris 2.3. | |
| 1347 See Sun bugs 1113095 and 1114114, ``Timezone routines | |
| 1348 improperly modify environment''. */ | |
| 1349 | |
| 2367 | 1350 static Ascbyte set_time_zone_rule_tz1[] = "TZ=GMT+0"; |
| 1351 static Ascbyte set_time_zone_rule_tz2[] = "TZ=GMT+1"; | |
| 428 | 1352 |
| 1353 #endif | |
| 1354 | |
| 1355 /* Set the local time zone rule to TZSTRING. | |
| 1356 This allocates memory into `environ', which it is the caller's | |
| 1357 responsibility to free. */ | |
| 1358 static void | |
| 771 | 1359 set_time_zone_rule (Extbyte *tzstring) |
| 428 | 1360 { |
| 1361 int envptrs; | |
| 771 | 1362 Extbyte **from, **to, **newenv; |
| 428 | 1363 |
| 1364 for (from = environ; *from; from++) | |
| 1365 continue; | |
| 1366 envptrs = from - environ + 2; | |
| 771 | 1367 newenv = to = (Extbyte **) xmalloc (envptrs * sizeof (Extbyte *) |
| 428 | 1368 + (tzstring ? strlen (tzstring) + 4 : 0)); |
| 1369 if (tzstring) | |
| 1370 { | |
| 771 | 1371 Extbyte *t = (Extbyte *) (to + envptrs); |
| 428 | 1372 strcpy (t, "TZ="); |
| 1373 strcat (t, tzstring); | |
| 1374 *to++ = t; | |
| 1375 } | |
| 1376 | |
| 1377 for (from = environ; *from; from++) | |
| 1378 if (strncmp (*from, "TZ=", 3) != 0) | |
| 1379 *to++ = *from; | |
| 1380 *to = 0; | |
| 1381 | |
| 1382 environ = newenv; | |
| 1383 | |
| 1384 #ifdef LOCALTIME_CACHE | |
| 1385 { | |
| 1386 /* In SunOS 4.1.3_U1 and 4.1.4, if TZ has a value like | |
| 1387 "US/Pacific" that loads a tz file, then changes to a value like | |
| 1388 "XXX0" that does not load a tz file, and then changes back to | |
| 1389 its original value, the last change is (incorrectly) ignored. | |
| 1390 Also, if TZ changes twice in succession to values that do | |
| 1391 not load a tz file, tzset can dump core (see Sun bug#1225179). | |
| 1392 The following code works around these bugs. */ | |
| 1393 | |
| 1394 if (tzstring) | |
| 1395 { | |
| 1396 /* Temporarily set TZ to a value that loads a tz file | |
| 1397 and that differs from tzstring. */ | |
| 771 | 1398 Extbyte *tz = *newenv; |
| 428 | 1399 *newenv = (strcmp (tzstring, set_time_zone_rule_tz1 + 3) == 0 |
| 1400 ? set_time_zone_rule_tz2 : set_time_zone_rule_tz1); | |
| 1401 tzset (); | |
| 1402 *newenv = tz; | |
| 1403 } | |
| 1404 else | |
| 1405 { | |
| 1406 /* The implied tzstring is unknown, so temporarily set TZ to | |
| 1407 two different values that each load a tz file. */ | |
| 1408 *to = set_time_zone_rule_tz1; | |
| 1409 to[1] = 0; | |
| 1410 tzset (); | |
| 1411 *to = set_time_zone_rule_tz2; | |
| 1412 tzset (); | |
| 1413 *to = 0; | |
| 1414 } | |
| 1415 | |
| 1416 /* Now TZ has the desired value, and tzset can be invoked safely. */ | |
| 1417 } | |
| 1418 | |
| 1419 tzset (); | |
| 1420 #endif | |
| 1421 } | |
| 1422 | |
| 1423 DEFUN ("set-time-zone-rule", Fset_time_zone_rule, 1, 1, 0, /* | |
| 1424 Set the local time zone using TZ, a string specifying a time zone rule. | |
| 1425 If TZ is nil, use implementation-defined default time zone information. | |
| 1426 */ | |
| 1427 (tz)) | |
| 1428 { | |
| 771 | 1429 Extbyte *tzstring; |
| 428 | 1430 |
| 1431 if (NILP (tz)) | |
| 1432 tzstring = 0; | |
| 1433 else | |
| 1434 { | |
| 1435 CHECK_STRING (tz); | |
|
4981
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Cleanups/renaming of EXTERNAL_TO_C_STRING and friends
Ben Wing <ben@xemacs.org>
parents:
4962
diff
changeset
|
1436 tzstring = LISP_STRING_TO_EXTERNAL (tz, Qtime_zone_encoding); |
| 428 | 1437 } |
| 1438 | |
| 1439 set_time_zone_rule (tzstring); | |
| 1440 if (environbuf) | |
|
4976
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Rename xfree(FOO, TYPE) -> xfree(FOO)
Ben Wing <ben@xemacs.org>
parents:
4962
diff
changeset
|
1441 xfree (environbuf); |
| 428 | 1442 environbuf = environ; |
| 1443 | |
| 1444 return Qnil; | |
| 1445 } | |
| 1446 | |
| 1447 | |
| 1448 void | |
| 1449 buffer_insert1 (struct buffer *buf, Lisp_Object arg) | |
| 1450 { | |
| 1451 /* This function can GC */ | |
| 1452 struct gcpro gcpro1; | |
| 1453 GCPRO1 (arg); | |
| 1454 retry: | |
| 1455 if (CHAR_OR_CHAR_INTP (arg)) | |
| 1456 { | |
| 1457 buffer_insert_emacs_char (buf, XCHAR_OR_CHAR_INT (arg)); | |
| 1458 } | |
| 1459 else if (STRINGP (arg)) | |
| 1460 { | |
| 1461 buffer_insert_lisp_string (buf, arg); | |
| 1462 } | |
| 1463 else | |
| 1464 { | |
| 1465 arg = wrong_type_argument (Qchar_or_string_p, arg); | |
| 1466 goto retry; | |
| 1467 } | |
| 1468 UNGCPRO; | |
| 1469 } | |
| 1470 | |
| 1471 | |
| 1472 /* Callers passing one argument to Finsert need not gcpro the | |
| 1473 argument "array", since the only element of the array will | |
| 1474 not be used after calling insert_emacs_char or insert_lisp_string, | |
| 1475 so we don't care if it gets trashed. */ | |
| 1476 | |
| 1477 DEFUN ("insert", Finsert, 0, MANY, 0, /* | |
|
4693
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Add argument information to remaining MANY or UNEVALLED C subrs.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4470
diff
changeset
|
1478 Insert ARGS, either strings or characters, at point. |
| 428 | 1479 Point moves forward so that it ends up after the inserted text. |
| 1480 Any other markers at the point of insertion remain before the text. | |
| 1481 If a string has non-null string-extent-data, new extents will be created. | |
|
4693
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Aidan Kehoe <kehoea@parhasard.net>
parents:
4470
diff
changeset
|
1482 |
|
80cd90837ac5
Add argument information to remaining MANY or UNEVALLED C subrs.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4470
diff
changeset
|
1483 arguments: (&rest ARGS) |
| 428 | 1484 */ |
| 1485 (int nargs, Lisp_Object *args)) | |
| 1486 { | |
| 1487 /* This function can GC */ | |
| 1488 REGISTER int argnum; | |
| 1489 | |
| 1490 for (argnum = 0; argnum < nargs; argnum++) | |
| 1491 { | |
| 1492 buffer_insert1 (current_buffer, args[argnum]); | |
| 1493 } | |
| 1494 | |
| 1495 return Qnil; | |
| 1496 } | |
| 1497 | |
| 1498 DEFUN ("insert-before-markers", Finsert_before_markers, 0, MANY, 0, /* | |
| 1499 Insert strings or characters at point, relocating markers after the text. | |
| 1500 Point moves forward so that it ends up after the inserted text. | |
| 1501 Any other markers at the point of insertion also end up after the text. | |
|
4693
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Aidan Kehoe <kehoea@parhasard.net>
parents:
4470
diff
changeset
|
1502 |
|
80cd90837ac5
Add argument information to remaining MANY or UNEVALLED C subrs.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4470
diff
changeset
|
1503 arguments: (&rest ARGS) |
| 428 | 1504 */ |
| 1505 (int nargs, Lisp_Object *args)) | |
| 1506 { | |
| 1507 /* This function can GC */ | |
| 1508 REGISTER int argnum; | |
| 1509 REGISTER Lisp_Object tem; | |
| 1510 | |
| 1511 for (argnum = 0; argnum < nargs; argnum++) | |
| 1512 { | |
| 1513 tem = args[argnum]; | |
| 1514 retry: | |
| 1515 if (CHAR_OR_CHAR_INTP (tem)) | |
| 1516 { | |
| 1517 buffer_insert_emacs_char_1 (current_buffer, -1, | |
| 1518 XCHAR_OR_CHAR_INT (tem), | |
| 1519 INSDEL_BEFORE_MARKERS); | |
| 1520 } | |
| 1521 else if (STRINGP (tem)) | |
| 1522 { | |
| 1523 buffer_insert_lisp_string_1 (current_buffer, -1, tem, | |
| 1524 INSDEL_BEFORE_MARKERS); | |
| 1525 } | |
| 1526 else | |
| 1527 { | |
| 1528 tem = wrong_type_argument (Qchar_or_string_p, tem); | |
| 1529 goto retry; | |
| 1530 } | |
| 1531 } | |
| 1532 return Qnil; | |
| 1533 } | |
| 1534 | |
| 1535 DEFUN ("insert-string", Finsert_string, 1, 2, 0, /* | |
| 1536 Insert STRING into BUFFER at BUFFER's point. | |
| 1537 Point moves forward so that it ends up after the inserted text. | |
| 1538 Any other markers at the point of insertion remain before the text. | |
| 1539 If a string has non-null string-extent-data, new extents will be created. | |
| 1540 BUFFER defaults to the current buffer. | |
| 1541 */ | |
| 1542 (string, buffer)) | |
| 1543 { | |
| 1544 struct buffer *b = decode_buffer (buffer, 1); | |
| 1545 CHECK_STRING (string); | |
| 1546 buffer_insert_lisp_string (b, string); | |
| 1547 return Qnil; | |
| 1548 } | |
| 1549 | |
| 1550 /* Third argument in FSF is INHERIT: | |
| 1551 | |
| 1552 "The optional third arg INHERIT, if non-nil, says to inherit text properties | |
| 1553 from adjoining text, if those properties are sticky." | |
| 1554 | |
| 1555 Jamie thinks this is bogus. */ | |
| 1556 | |
| 1557 | |
| 1558 DEFUN ("insert-char", Finsert_char, 1, 4, 0, /* | |
| 444 | 1559 Insert COUNT copies of CHARACTER into BUFFER. |
| 428 | 1560 Point and all markers are affected as in the function `insert'. |
| 1561 COUNT defaults to 1 if omitted. | |
| 1562 The optional third arg IGNORED is INHERIT under FSF Emacs. | |
| 1563 This is highly bogus, however, and XEmacs always behaves as if | |
| 1564 `t' were passed to INHERIT. | |
| 1565 The optional fourth arg BUFFER specifies the buffer to insert the | |
| 1566 text into. If BUFFER is nil, the current buffer is assumed. | |
| 1567 */ | |
| 2286 | 1568 (character, count, UNUSED (ignored), buffer)) |
| 428 | 1569 { |
| 1570 /* This function can GC */ | |
| 867 | 1571 REGISTER Ibyte *string; |
| 814 | 1572 REGISTER Bytecount slen; |
| 1573 REGISTER Bytecount i, j; | |
| 428 | 1574 REGISTER Bytecount n; |
| 1575 REGISTER Bytecount charlen; | |
| 867 | 1576 Ibyte str[MAX_ICHAR_LEN]; |
| 428 | 1577 struct buffer *b = decode_buffer (buffer, 1); |
| 1578 int cou; | |
| 1579 | |
| 444 | 1580 CHECK_CHAR_COERCE_INT (character); |
| 428 | 1581 if (NILP (count)) |
| 1582 cou = 1; | |
| 1583 else | |
| 1584 { | |
| 1585 CHECK_INT (count); | |
| 1586 cou = XINT (count); | |
| 1587 } | |
| 1588 | |
| 867 | 1589 charlen = set_itext_ichar (str, XCHAR (character)); |
| 428 | 1590 n = cou * charlen; |
| 1591 if (n <= 0) | |
| 1592 return Qnil; | |
| 814 | 1593 slen = min (n, (Bytecount) 768); |
| 2367 | 1594 string = alloca_ibytes (slen); |
| 428 | 1595 /* Write as many copies of the character into the temp string as will fit. */ |
| 1596 for (i = 0; i + charlen <= slen; i += charlen) | |
| 1597 for (j = 0; j < charlen; j++) | |
| 1598 string[i + j] = str[j]; | |
| 1599 slen = i; | |
| 1600 while (n >= slen) | |
| 1601 { | |
| 1602 buffer_insert_raw_string (b, string, slen); | |
| 1603 n -= slen; | |
| 1604 } | |
| 1605 if (n > 0) | |
| 1606 #if 0 /* FSFmacs bogosity */ | |
| 1607 { | |
| 1608 if (!NILP (inherit)) | |
| 1609 insert_and_inherit (string, n); | |
| 1610 else | |
| 1611 insert (string, n); | |
| 1612 } | |
| 1613 #else | |
| 1614 buffer_insert_raw_string (b, string, n); | |
| 1615 #endif | |
| 1616 | |
| 1617 return Qnil; | |
| 1618 } | |
| 1619 | |
| 1620 | |
| 1621 /* Making strings from buffer contents. */ | |
| 1622 | |
| 1623 DEFUN ("buffer-substring", Fbuffer_substring, 0, 3, 0, /* | |
| 1624 Return the contents of part of BUFFER as a string. | |
| 1625 The two arguments START and END are character positions; | |
| 1626 they can be in either order. If omitted, they default to the beginning | |
| 1627 and end of BUFFER, respectively. | |
| 1628 If there are duplicable extents in the region, the string remembers | |
| 1629 them in its extent data. | |
| 1630 If BUFFER is nil, the current buffer is assumed. | |
| 1631 */ | |
| 1632 (start, end, buffer)) | |
| 1633 { | |
| 1634 /* This function can GC */ | |
| 665 | 1635 Charbpos begv, zv; |
| 428 | 1636 struct buffer *b = decode_buffer (buffer, 1); |
| 1637 | |
| 1638 get_buffer_range_char (b, start, end, &begv, &zv, GB_ALLOW_NIL); | |
| 1639 return make_string_from_buffer (b, begv, zv - begv); | |
| 1640 } | |
| 1641 | |
| 1642 /* It might make more sense to name this | |
| 1643 `buffer-substring-no-extents', but this name is FSFmacs-compatible, | |
| 1644 and what the function does is probably good enough for what the | |
| 1645 user-code will typically want to use it for. */ | |
| 1646 DEFUN ("buffer-substring-no-properties", Fbuffer_substring_no_properties, 0, 3, 0, /* | |
| 444 | 1647 Return the text from START to END as a string, without copying the extents. |
| 428 | 1648 */ |
| 1649 (start, end, buffer)) | |
| 1650 { | |
| 1651 /* This function can GC */ | |
| 665 | 1652 Charbpos begv, zv; |
| 428 | 1653 struct buffer *b = decode_buffer (buffer, 1); |
| 1654 | |
| 1655 get_buffer_range_char (b, start, end, &begv, &zv, GB_ALLOW_NIL); | |
| 1656 return make_string_from_buffer_no_extents (b, begv, zv - begv); | |
| 1657 } | |
| 1658 | |
| 1659 DEFUN ("insert-buffer-substring", Finsert_buffer_substring, 1, 3, 0, /* | |
| 1660 Insert before point a substring of the contents of buffer BUFFER. | |
| 1661 BUFFER may be a buffer or a buffer name. | |
| 1662 Arguments START and END are character numbers specifying the substring. | |
| 1663 They default to the beginning and the end of BUFFER. | |
| 1664 */ | |
| 1665 (buffer, start, end)) | |
| 1666 { | |
| 1667 /* This function can GC */ | |
| 665 | 1668 Charbpos b, e; |
| 428 | 1669 struct buffer *bp; |
| 1670 | |
| 1671 bp = XBUFFER (get_buffer (buffer, 1)); | |
| 1672 get_buffer_range_char (bp, start, end, &b, &e, GB_ALLOW_NIL); | |
| 1673 | |
| 1674 if (b < e) | |
| 1675 buffer_insert_from_buffer (current_buffer, bp, b, e - b); | |
| 1676 | |
| 1677 return Qnil; | |
| 1678 } | |
| 1679 | |
| 1680 DEFUN ("compare-buffer-substrings", Fcompare_buffer_substrings, 6, 6, 0, /* | |
| 1681 Compare two substrings of two buffers; return result as number. | |
| 1682 the value is -N if first string is less after N-1 chars, | |
| 1683 +N if first string is greater after N-1 chars, or 0 if strings match. | |
| 1684 Each substring is represented as three arguments: BUFFER, START and END. | |
| 1685 That makes six args in all, three for each substring. | |
| 1686 | |
| 1687 The value of `case-fold-search' in the current buffer | |
| 1688 determines whether case is significant or ignored. | |
| 1689 */ | |
| 1690 (buffer1, start1, end1, buffer2, start2, end2)) | |
| 1691 { | |
| 665 | 1692 Charbpos begp1, endp1, begp2, endp2; |
| 428 | 1693 REGISTER Charcount len1, len2, length, i; |
| 1694 struct buffer *bp1, *bp2; | |
| 1695 Lisp_Object trt = ((!NILP (current_buffer->case_fold_search)) ? | |
| 446 | 1696 XCASE_TABLE_CANON (current_buffer->case_table) : Qnil); |
| 428 | 1697 |
| 1698 /* Find the first buffer and its substring. */ | |
| 1699 | |
| 1700 bp1 = decode_buffer (buffer1, 1); | |
| 1701 get_buffer_range_char (bp1, start1, end1, &begp1, &endp1, GB_ALLOW_NIL); | |
| 1702 | |
| 1703 /* Likewise for second substring. */ | |
| 1704 | |
| 1705 bp2 = decode_buffer (buffer2, 1); | |
| 1706 get_buffer_range_char (bp2, start2, end2, &begp2, &endp2, GB_ALLOW_NIL); | |
| 1707 | |
| 1708 len1 = endp1 - begp1; | |
| 1709 len2 = endp2 - begp2; | |
| 1710 length = len1; | |
| 1711 if (len2 < length) | |
| 1712 length = len2; | |
| 1713 | |
| 1714 for (i = 0; i < length; i++) | |
| 1715 { | |
| 867 | 1716 Ichar c1 = BUF_FETCH_CHAR (bp1, begp1 + i); |
| 1717 Ichar c2 = BUF_FETCH_CHAR (bp2, begp2 + i); | |
| 428 | 1718 if (!NILP (trt)) |
| 1719 { | |
| 1720 c1 = TRT_TABLE_OF (trt, c1); | |
| 1721 c2 = TRT_TABLE_OF (trt, c2); | |
| 1722 } | |
| 1723 if (c1 < c2) | |
| 1724 return make_int (- 1 - i); | |
| 1725 if (c1 > c2) | |
| 1726 return make_int (i + 1); | |
| 1727 } | |
| 1728 | |
| 1729 /* The strings match as far as they go. | |
| 1730 If one is shorter, that one is less. */ | |
| 1731 if (length < len1) | |
| 1732 return make_int (length + 1); | |
| 1733 else if (length < len2) | |
| 1734 return make_int (- length - 1); | |
| 1735 | |
| 1736 /* Same length too => they are equal. */ | |
| 1737 return Qzero; | |
| 1738 } | |
| 1739 | |
| 1740 | |
| 1741 static Lisp_Object | |
| 1742 subst_char_in_region_unwind (Lisp_Object arg) | |
| 1743 { | |
| 1744 XBUFFER (XCAR (arg))->undo_list = XCDR (arg); | |
| 1745 return Qnil; | |
| 1746 } | |
| 1747 | |
| 1748 static Lisp_Object | |
| 1749 subst_char_in_region_unwind_1 (Lisp_Object arg) | |
| 1750 { | |
| 1751 XBUFFER (XCAR (arg))->filename = XCDR (arg); | |
| 1752 return Qnil; | |
| 1753 } | |
| 1754 | |
| 1755 DEFUN ("subst-char-in-region", Fsubst_char_in_region, 4, 5, 0, /* | |
| 1756 From START to END, replace FROMCHAR with TOCHAR each time it occurs. | |
| 1757 If optional arg NOUNDO is non-nil, don't record this change for undo | |
| 1758 and don't mark the buffer as really changed. | |
| 1759 */ | |
| 1760 (start, end, fromchar, tochar, noundo)) | |
| 1761 { | |
| 1762 /* This function can GC */ | |
| 665 | 1763 Charbpos pos, stop; |
| 867 | 1764 Ichar fromc, toc; |
| 428 | 1765 int mc_count; |
| 1766 struct buffer *buf = current_buffer; | |
| 1767 int count = specpdl_depth (); | |
| 1768 | |
| 1769 get_buffer_range_char (buf, start, end, &pos, &stop, 0); | |
| 1770 CHECK_CHAR_COERCE_INT (fromchar); | |
| 1771 CHECK_CHAR_COERCE_INT (tochar); | |
| 1772 | |
| 1773 fromc = XCHAR (fromchar); | |
| 1774 toc = XCHAR (tochar); | |
| 1775 | |
| 1776 /* If we don't want undo, turn off putting stuff on the list. | |
| 1777 That's faster than getting rid of things, | |
| 1778 and it prevents even the entry for a first change. | |
| 1779 Also inhibit locking the file. */ | |
| 1780 if (!NILP (noundo)) | |
| 1781 { | |
| 1782 record_unwind_protect (subst_char_in_region_unwind, | |
| 1783 Fcons (Fcurrent_buffer (), buf->undo_list)); | |
| 1784 buf->undo_list = Qt; | |
| 1785 /* Don't do file-locking. */ | |
| 1786 record_unwind_protect (subst_char_in_region_unwind_1, | |
| 1787 Fcons (Fcurrent_buffer (), buf->filename)); | |
| 1788 buf->filename = Qnil; | |
| 1789 } | |
| 1790 | |
| 1791 mc_count = begin_multiple_change (buf, pos, stop); | |
| 1792 while (pos < stop) | |
| 1793 { | |
| 1794 if (BUF_FETCH_CHAR (buf, pos) == fromc) | |
| 1795 { | |
| 1796 /* There used to be some code here that set the buffer to | |
| 1797 unmodified if NOUNDO was specified and there was only | |
| 1798 one change to the buffer since it was last saved. | |
| 1799 This is a crock of shit, so I'm not duplicating this | |
| 1800 behavior. I think this was left over from when | |
| 1801 prepare_to_modify_buffer() actually bumped MODIFF, | |
| 1802 so that code was supposed to undo this change. --ben */ | |
| 1803 buffer_replace_char (buf, pos, toc, !NILP (noundo), 0); | |
| 1804 | |
| 1805 /* If noundo is not nil then we don't mark the buffer as | |
| 1806 modified. In reality that needs to happen externally | |
| 1807 only. Internally redisplay needs to know that the actual | |
| 1808 contents it should be displaying have changed. */ | |
| 1809 if (!NILP (noundo)) | |
| 1810 Fset_buffer_modified_p (Fbuffer_modified_p (Qnil), Qnil); | |
| 1811 } | |
| 1812 pos++; | |
| 1813 } | |
| 1814 end_multiple_change (buf, mc_count); | |
| 1815 | |
| 771 | 1816 unbind_to (count); |
| 428 | 1817 return Qnil; |
| 1818 } | |
| 1819 | |
| 1820 /* #### Shouldn't this also accept a BUFFER argument, in the good old | |
| 1821 XEmacs tradition? */ | |
| 1822 DEFUN ("translate-region", Ftranslate_region, 3, 3, 0, /* | |
| 1823 Translate characters from START to END according to TABLE. | |
| 1824 | |
| 1825 If TABLE is a string, the Nth character in it is the mapping for the | |
| 1826 character with code N. | |
| 1827 | |
| 1828 If TABLE is a vector, its Nth element is the mapping for character | |
| 1829 with code N. The values of elements may be characters, strings, or | |
| 1830 nil (nil meaning don't replace.) | |
| 1831 | |
| 1832 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
|
1833 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
|
1834 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
|
1835 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
|
1836 `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
|
1837 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
|
1838 not all of them, the most generally useful table type here is `generic'. |
| 428 | 1839 |
| 1840 Returns the number of substitutions performed. | |
| 1841 */ | |
| 1842 (start, end, table)) | |
| 1843 { | |
| 1844 /* This function can GC */ | |
| 665 | 1845 Charbpos pos, stop; /* Limits of the region. */ |
| 428 | 1846 int cnt = 0; /* Number of changes made. */ |
| 1847 int mc_count; | |
| 1848 struct buffer *buf = current_buffer; | |
| 867 | 1849 Ichar oc; |
| 428 | 1850 |
| 1851 get_buffer_range_char (buf, start, end, &pos, &stop, 0); | |
| 1852 mc_count = begin_multiple_change (buf, pos, stop); | |
| 1853 if (STRINGP (table)) | |
| 1854 { | |
| 826 | 1855 Charcount size = string_char_length (table); |
| 428 | 1856 #ifdef MULE |
| 867 | 1857 /* Under Mule, string_ichar(n) is O(n), so for large tables or |
| 1858 large regions it makes sense to create an array of Ichars. */ | |
| 428 | 1859 if (size * (stop - pos) > 65536) |
| 1860 { | |
| 867 | 1861 Ichar *etable = alloca_array (Ichar, size); |
| 1862 convert_ibyte_string_into_ichar_string | |
| 793 | 1863 (XSTRING_DATA (table), XSTRING_LENGTH (table), etable); |
| 428 | 1864 for (; pos < stop && (oc = BUF_FETCH_CHAR (buf, pos), 1); pos++) |
| 1865 { | |
| 1866 if (oc < size) | |
| 1867 { | |
| 867 | 1868 Ichar nc = etable[oc]; |
| 428 | 1869 if (nc != oc) |
| 1870 { | |
| 1871 buffer_replace_char (buf, pos, nc, 0, 0); | |
| 1872 ++cnt; | |
| 1873 } | |
| 1874 } | |
| 1875 } | |
| 1876 } | |
| 1877 else | |
| 1878 #endif /* MULE */ | |
| 1879 { | |
| 1880 for (; pos < stop && (oc = BUF_FETCH_CHAR (buf, pos), 1); pos++) | |
| 1881 { | |
| 1882 if (oc < size) | |
| 1883 { | |
| 867 | 1884 Ichar nc = string_ichar (table, oc); |
| 428 | 1885 if (nc != oc) |
| 1886 { | |
| 1887 buffer_replace_char (buf, pos, nc, 0, 0); | |
| 1888 ++cnt; | |
| 1889 } | |
| 1890 } | |
| 1891 } | |
| 1892 } | |
| 1893 } | |
| 1894 else if (VECTORP (table)) | |
| 1895 { | |
| 1896 Charcount size = XVECTOR_LENGTH (table); | |
| 1897 Lisp_Object *vtable = XVECTOR_DATA (table); | |
| 1898 | |
| 1899 for (; pos < stop && (oc = BUF_FETCH_CHAR (buf, pos), 1); pos++) | |
| 1900 { | |
| 1901 if (oc < size) | |
| 1902 { | |
| 1903 Lisp_Object replacement = vtable[oc]; | |
| 1904 retry: | |
| 1905 if (CHAR_OR_CHAR_INTP (replacement)) | |
| 1906 { | |
| 867 | 1907 Ichar nc = XCHAR_OR_CHAR_INT (replacement); |
| 428 | 1908 if (nc != oc) |
| 1909 { | |
| 1910 buffer_replace_char (buf, pos, nc, 0, 0); | |
| 1911 ++cnt; | |
| 1912 } | |
| 1913 } | |
| 1914 else if (STRINGP (replacement)) | |
| 1915 { | |
| 826 | 1916 Charcount incr = string_char_length (replacement) - 1; |
| 428 | 1917 buffer_delete_range (buf, pos, pos + 1, 0); |
| 1918 buffer_insert_lisp_string_1 (buf, pos, replacement, 0); | |
| 1919 pos += incr, stop += incr; | |
| 1920 ++cnt; | |
| 1921 } | |
| 1922 else if (!NILP (replacement)) | |
| 1923 { | |
| 1924 replacement = wrong_type_argument (Qchar_or_string_p, replacement); | |
| 1925 goto retry; | |
| 1926 } | |
| 1927 } | |
| 1928 } | |
| 1929 } | |
| 1930 else if (CHAR_TABLEP (table) | |
| 1931 && (XCHAR_TABLE_TYPE (table) == CHAR_TABLE_TYPE_GENERIC | |
| 1932 || XCHAR_TABLE_TYPE (table) == CHAR_TABLE_TYPE_CHAR)) | |
| 1933 { | |
| 1934 | |
| 1935 for (; pos < stop && (oc = BUF_FETCH_CHAR (buf, pos), 1); pos++) | |
| 1936 { | |
| 826 | 1937 Lisp_Object replacement = get_char_table (oc, table); |
| 428 | 1938 retry2: |
| 1939 if (CHAR_OR_CHAR_INTP (replacement)) | |
| 1940 { | |
| 867 | 1941 Ichar nc = XCHAR_OR_CHAR_INT (replacement); |
| 428 | 1942 if (nc != oc) |
| 1943 { | |
| 1944 buffer_replace_char (buf, pos, nc, 0, 0); | |
| 1945 ++cnt; | |
| 1946 } | |
| 1947 } | |
| 1948 else if (STRINGP (replacement)) | |
| 1949 { | |
| 826 | 1950 Charcount incr = string_char_length (replacement) - 1; |
| 428 | 1951 buffer_delete_range (buf, pos, pos + 1, 0); |
| 1952 buffer_insert_lisp_string_1 (buf, pos, replacement, 0); | |
| 1953 pos += incr, stop += incr; | |
| 1954 ++cnt; | |
| 1955 } | |
| 1956 else if (!NILP (replacement)) | |
| 1957 { | |
| 826 | 1958 replacement = wrong_type_argument (Qchar_or_string_p, |
| 1959 replacement); | |
| 428 | 1960 goto retry2; |
| 1961 } | |
| 1962 } | |
| 1963 } | |
| 1964 else | |
| 1965 dead_wrong_type_argument (Qstringp, table); | |
| 1966 end_multiple_change (buf, mc_count); | |
| 1967 | |
| 1968 return make_int (cnt); | |
| 1969 } | |
| 1970 | |
| 1971 DEFUN ("delete-region", Fdelete_region, 2, 3, "r", /* | |
| 1972 Delete the text between point and mark. | |
| 444 | 1973 When called from a program, expects two arguments START and END |
| 1974 \(integers or markers) specifying the stretch to be deleted. | |
| 1975 If optional third arg BUFFER is nil, the current buffer is assumed. | |
| 428 | 1976 */ |
| 444 | 1977 (start, end, buffer)) |
| 428 | 1978 { |
| 1979 /* This function can GC */ | |
| 826 | 1980 Charbpos char_start, char_end; |
| 428 | 1981 struct buffer *buf = decode_buffer (buffer, 1); |
| 1982 | |
| 826 | 1983 get_buffer_range_char (buf, start, end, &char_start, &char_end, 0); |
| 1984 buffer_delete_range (buf, char_start, char_end, 0); | |
| 428 | 1985 return Qnil; |
| 1986 } | |
| 1987 | |
| 1988 void | |
| 1989 widen_buffer (struct buffer *b, int no_clip) | |
| 1990 { | |
| 1991 if (BUF_BEGV (b) != BUF_BEG (b)) | |
| 1992 { | |
| 1993 clip_changed = 1; | |
| 826 | 1994 SET_BOTH_BUF_BEGV (b, BUF_BEG (b), BYTE_BUF_BEG (b)); |
| 428 | 1995 } |
| 1996 if (BUF_ZV (b) != BUF_Z (b)) | |
| 1997 { | |
| 1998 clip_changed = 1; | |
| 826 | 1999 SET_BOTH_BUF_ZV (b, BUF_Z (b), BYTE_BUF_Z (b)); |
| 428 | 2000 } |
| 2001 if (clip_changed) | |
| 2002 { | |
| 2003 if (!no_clip) | |
| 2004 MARK_CLIP_CHANGED; | |
| 2005 /* Changing the buffer bounds invalidates any recorded current | |
| 2006 column. */ | |
| 2007 invalidate_current_column (); | |
| 2008 narrow_line_number_cache (b); | |
| 2009 } | |
| 2010 } | |
| 2011 | |
| 2012 DEFUN ("widen", Fwiden, 0, 1, "", /* | |
| 2013 Remove restrictions (narrowing) from BUFFER. | |
| 2014 This allows the buffer's full text to be seen and edited. | |
| 2015 If BUFFER is nil, the current buffer is assumed. | |
| 2016 */ | |
| 2017 (buffer)) | |
| 2018 { | |
| 2019 struct buffer *b = decode_buffer (buffer, 1); | |
| 2020 widen_buffer (b, 0); | |
| 2021 return Qnil; | |
| 2022 } | |
| 2023 | |
| 2024 DEFUN ("narrow-to-region", Fnarrow_to_region, 2, 3, "r", /* | |
| 2025 Restrict editing in BUFFER to the current region. | |
| 2026 The rest of the text becomes temporarily invisible and untouchable | |
| 2027 but is not deleted; if you save the buffer in a file, the invisible | |
| 2028 text is included in the file. \\[widen] makes all visible again. | |
| 2029 If BUFFER is nil, the current buffer is assumed. | |
| 2030 See also `save-restriction'. | |
| 2031 | |
| 2032 When calling from a program, pass two arguments; positions (integers | |
| 2033 or markers) bounding the text that should remain visible. | |
| 2034 */ | |
| 444 | 2035 (start, end, buffer)) |
| 428 | 2036 { |
| 826 | 2037 Charbpos char_start, char_end; |
| 428 | 2038 struct buffer *buf = decode_buffer (buffer, 1); |
| 826 | 2039 Bytebpos byte_start, byte_end; |
| 428 | 2040 |
| 826 | 2041 get_buffer_range_char (buf, start, end, &char_start, &char_end, |
| 444 | 2042 GB_ALLOW_PAST_ACCESSIBLE); |
| 826 | 2043 byte_start = charbpos_to_bytebpos (buf, char_start); |
| 2044 byte_end = charbpos_to_bytebpos (buf, char_end); | |
| 428 | 2045 |
| 826 | 2046 SET_BOTH_BUF_BEGV (buf, char_start, byte_start); |
| 2047 SET_BOTH_BUF_ZV (buf, char_end, byte_end); | |
| 2048 if (BUF_PT (buf) < char_start) | |
| 2049 BUF_SET_PT (buf, char_start); | |
| 2050 if (BUF_PT (buf) > char_end) | |
| 2051 BUF_SET_PT (buf, char_end); | |
| 428 | 2052 MARK_CLIP_CHANGED; |
| 2053 /* Changing the buffer bounds invalidates any recorded current column. */ | |
| 2054 invalidate_current_column (); | |
| 2055 narrow_line_number_cache (buf); | |
| 2056 return Qnil; | |
| 2057 } | |
| 2058 | |
| 2059 Lisp_Object | |
| 844 | 2060 save_restriction_save (struct buffer *buf) |
| 428 | 2061 { |
| 844 | 2062 Lisp_Object bottom = noseeum_make_marker (); |
| 2063 Lisp_Object top = noseeum_make_marker (); | |
| 2064 | |
| 2065 /* Formerly, this function remembered the amount of text on either side | |
| 2066 of the restricted area, in a halfway attempt to account for insertion -- | |
| 2067 it handles insertion inside the old restricted area, but not outside. | |
| 2068 The comment read: | |
| 2069 | |
| 2070 [[ Note: I tried using markers here, but it does not win | |
| 428 | 2071 because insertion at the end of the saved region |
| 844 | 2072 does not advance mh and is considered "outside" the saved region. ]] |
| 2073 | |
| 2074 But that was clearly before the advent of marker-insertion-type. --ben */ | |
| 428 | 2075 |
| 844 | 2076 Fset_marker (bottom, make_int (BUF_BEGV (buf)), wrap_buffer (buf)); |
| 2077 Fset_marker (top, make_int (BUF_ZV (buf)), wrap_buffer (buf)); | |
| 2078 Fset_marker_insertion_type (top, Qt); | |
| 2079 | |
| 2080 return noseeum_cons (wrap_buffer (buf), noseeum_cons (bottom, top)); | |
| 428 | 2081 } |
| 2082 | |
| 2083 Lisp_Object | |
| 2084 save_restriction_restore (Lisp_Object data) | |
| 2085 { | |
| 2086 struct buffer *buf; | |
| 844 | 2087 Lisp_Object markers = XCDR (data); |
| 428 | 2088 int local_clip_changed = 0; |
| 2089 | |
| 2090 buf = XBUFFER (XCAR (data)); | |
| 844 | 2091 /* someone could have killed the buffer in the meantime ... */ |
| 2092 if (BUFFER_LIVE_P (buf)) | |
| 428 | 2093 { |
| 844 | 2094 Charbpos start = marker_position (XCAR (markers)); |
| 2095 Charbpos end = marker_position (XCDR (markers)); | |
| 2096 Bytebpos byte_start = charbpos_to_bytebpos (buf, start); | |
| 2097 Bytebpos byte_end = charbpos_to_bytebpos (buf, end); | |
| 428 | 2098 |
| 844 | 2099 if (BUF_BEGV (buf) != start) |
| 2100 { | |
| 2101 local_clip_changed = 1; | |
| 2102 SET_BOTH_BUF_BEGV (buf, start, byte_start); | |
| 2103 narrow_line_number_cache (buf); | |
| 2104 } | |
| 2105 if (BUF_ZV (buf) != end) | |
| 2106 { | |
| 2107 local_clip_changed = 1; | |
| 2108 SET_BOTH_BUF_ZV (buf, end, byte_end); | |
| 2109 } | |
| 428 | 2110 |
| 844 | 2111 if (local_clip_changed) |
| 2112 MARK_CLIP_CHANGED; | |
| 2113 | |
| 2114 /* If point is outside the new visible range, move it inside. */ | |
| 2115 BUF_SET_PT (buf, charbpos_clip_to_bounds (BUF_BEGV (buf), BUF_PT (buf), | |
| 2116 BUF_ZV (buf))); | |
| 428 | 2117 } |
| 2118 | |
| 844 | 2119 /* Free all the junk we allocated, so that a `save-restriction' comes |
| 2120 for free in terms of GC junk. */ | |
| 1204 | 2121 free_marker (XCAR (markers)); |
| 2122 free_marker (XCDR (markers)); | |
| 853 | 2123 free_cons (markers); |
| 2124 free_cons (data); | |
| 428 | 2125 |
| 2126 return Qnil; | |
| 2127 } | |
| 2128 | |
| 2129 DEFUN ("save-restriction", Fsave_restriction, 0, UNEVALLED, 0, /* | |
| 2130 Execute BODY, saving and restoring current buffer's restrictions. | |
| 2131 The buffer's restrictions make parts of the beginning and end invisible. | |
| 2132 \(They are set up with `narrow-to-region' and eliminated with `widen'.) | |
|
4905
755ae5b97edb
Change "special form" to "special operator" in our sources.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4834
diff
changeset
|
2133 This special operator, `save-restriction', saves the current buffer's |
|
755ae5b97edb
Change "special form" to "special operator" in our sources.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4834
diff
changeset
|
2134 restrictions when it is entered, and restores them when it is exited. |
| 428 | 2135 So any `narrow-to-region' within BODY lasts only until the end of the form. |
| 2136 The old restrictions settings are restored | |
| 2137 even in case of abnormal exit (throw or error). | |
| 2138 | |
| 2139 The value returned is the value of the last form in BODY. | |
| 2140 | |
| 844 | 2141 As of XEmacs 22.0, `save-restriction' correctly handles all modifications |
| 2142 made within BODY. (Formerly, it got confused if, within the BODY, you | |
| 2143 widened and then made changes outside the old restricted area.) | |
| 428 | 2144 |
| 2145 Note: if you are using both `save-excursion' and `save-restriction', | |
| 2146 use `save-excursion' outermost: | |
| 2147 (save-excursion (save-restriction ...)) | |
|
4693
80cd90837ac5
Add argument information to remaining MANY or UNEVALLED C subrs.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4470
diff
changeset
|
2148 |
|
80cd90837ac5
Add argument information to remaining MANY or UNEVALLED C subrs.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4470
diff
changeset
|
2149 arguments: (&rest BODY) |
| 428 | 2150 */ |
| 2151 (body)) | |
| 2152 { | |
| 2153 /* This function can GC */ | |
| 844 | 2154 int speccount = |
| 2155 record_unwind_protect (save_restriction_restore, | |
| 2156 save_restriction_save (current_buffer)); | |
| 428 | 2157 |
| 771 | 2158 return unbind_to_1 (speccount, Fprogn (body)); |
| 428 | 2159 } |
| 2160 | |
| 2161 | |
| 2162 DEFUN ("format", Fformat, 1, MANY, 0, /* | |
| 2163 Format a string out of a control-string and arguments. | |
| 2164 The first argument is a control string. | |
| 2165 The other arguments are substituted into it to make the result, a string. | |
| 2166 It may contain %-sequences meaning to substitute the next argument. | |
| 2167 %s means print all objects as-is, using `princ'. | |
| 2168 %S means print all objects as s-expressions, using `prin1'. | |
| 2169 %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
|
2170 %X uppercase hex, %b binary). |
| 428 | 2171 %c means print as a single character. |
| 2172 %f means print as a floating-point number in fixed notation (e.g. 785.200). | |
| 2173 %e or %E means print as a floating-point number in scientific notation | |
| 2174 (e.g. 7.85200e+03). | |
| 2175 %g or %G means print as a floating-point number in "pretty format"; | |
| 2176 depending on the number, either %f or %e/%E format will be used, and | |
| 2177 trailing zeroes are removed from the fractional part. | |
| 2178 The argument used for all but %s and %S must be a number. It will be | |
| 2179 converted to an integer or a floating-point number as necessary. | |
| 2180 | |
| 2181 %$ means reposition to read a specific numbered argument; for example, | |
| 2182 %3$s would apply the `%s' to the third argument after the control string, | |
| 2183 and the next format directive would use the fourth argument, the | |
| 2184 following one the fifth argument, etc. (There must be a positive integer | |
| 2185 between the % and the $). | |
| 2186 Zero or more of the flag characters `-', `+', ` ', `0', and `#' may be | |
| 2187 specified between the optional repositioning spec and the conversion | |
| 2188 character; see below. | |
| 2189 An optional minimum field width may be specified after any flag characters | |
| 2190 and before the conversion character; it specifies the minimum number of | |
| 2191 characters that the converted argument will take up. Padding will be | |
| 2192 added on the left (or on the right, if the `-' flag is specified), as | |
| 2193 necessary. Padding is done with spaces, or with zeroes if the `0' flag | |
| 2194 is specified. | |
| 2195 If the field width is specified as `*', the field width is assumed to have | |
| 2196 been specified as an argument. Any repositioning specification that | |
| 2197 would normally specify the argument to be converted will now specify | |
| 2198 where to find this field width argument, not where to find the argument | |
| 2199 to be converted. If there is no repositioning specification, the normal | |
| 2200 next argument is used. The argument to be converted will be the next | |
| 2201 argument after the field width argument unless the precision is also | |
| 2202 specified as `*' (see below). | |
| 2203 | |
| 2204 An optional period character and precision may be specified after any | |
| 2205 minimum field width. It specifies the minimum number of digits to | |
| 2206 appear in %d, %i, %o, %x, and %X conversions (the number is padded | |
| 2207 on the left with zeroes as necessary); the number of digits printed | |
| 2208 after the decimal point for %f, %e, and %E conversions; the number | |
| 2209 of significant digits printed in %g and %G conversions; and the | |
| 2210 maximum number of non-padding characters printed in %s and %S | |
| 2211 conversions. The default precision for floating-point conversions | |
| 2212 is six. | |
| 2213 If the precision is specified as `*', the precision is assumed to have been | |
| 2214 specified as an argument. The argument used will be the next argument | |
| 2215 after the field width argument, if any. If the field width was not | |
| 2216 specified as an argument, any repositioning specification that would | |
| 2217 normally specify the argument to be converted will now specify where to | |
| 2218 find the precision argument. If there is no repositioning specification, | |
| 2219 the normal next argument is used. | |
| 2220 | |
| 2221 The ` ' and `+' flags mean prefix non-negative numbers with a space or | |
| 2222 plus sign, respectively. | |
| 2223 The `#' flag means print numbers in an alternate, more verbose format: | |
| 2224 octal numbers begin with zero; hex numbers begin with a 0x or 0X; | |
| 2225 a decimal point is printed in %f, %e, and %E conversions even if no | |
| 2226 numbers are printed after it; and trailing zeroes are not omitted in | |
| 2227 %g and %G conversions. | |
| 2228 | |
| 2229 Use %% to put a single % into the output. | |
|
4693
80cd90837ac5
Add argument information to remaining MANY or UNEVALLED C subrs.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4470
diff
changeset
|
2230 |
|
80cd90837ac5
Add argument information to remaining MANY or UNEVALLED C subrs.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4470
diff
changeset
|
2231 arguments: (CONTROL-STRING &rest ARGS) |
| 428 | 2232 */ |
| 2233 (int nargs, Lisp_Object *args)) | |
| 2234 { | |
| 2235 /* It should not be necessary to GCPRO ARGS, because | |
| 2236 the caller in the interpreter should take care of that. */ | |
| 2237 | |
| 2238 CHECK_STRING (args[0]); | |
| 771 | 2239 return emacs_vsprintf_string_lisp (0, args[0], nargs - 1, args + 1); |
| 428 | 2240 } |
| 2241 | |
| 2242 | |
| 2243 DEFUN ("char-equal", Fchar_equal, 2, 3, 0, /* | |
| 2244 Return t if two characters match, optionally ignoring case. | |
| 2245 Both arguments must be characters (i.e. NOT integers). | |
| 2246 Case is ignored if `case-fold-search' is non-nil in BUFFER. | |
| 2247 If BUFFER is nil, the current buffer is assumed. | |
| 2248 */ | |
| 444 | 2249 (character1, character2, buffer)) |
| 428 | 2250 { |
| 867 | 2251 Ichar x1, x2; |
| 428 | 2252 struct buffer *b = decode_buffer (buffer, 1); |
| 2253 | |
| 444 | 2254 CHECK_CHAR_COERCE_INT (character1); |
| 2255 CHECK_CHAR_COERCE_INT (character2); | |
| 2256 x1 = XCHAR (character1); | |
| 2257 x2 = XCHAR (character2); | |
| 428 | 2258 |
| 2259 return (!NILP (b->case_fold_search) | |
|
4906
6ef8256a020a
implement equalp in C, fix case-folding, add equal() method for keymaps
Ben Wing <ben@xemacs.org>
parents:
4834
diff
changeset
|
2260 ? CANONCASE (b, x1) == CANONCASE (b, x2) |
| 428 | 2261 : x1 == x2) |
| 2262 ? Qt : Qnil; | |
| 2263 } | |
| 2264 | |
| 434 | 2265 DEFUN ("char=", Fchar_Equal, 2, 2, 0, /* |
| 428 | 2266 Return t if two characters match, case is significant. |
| 2267 Both arguments must be characters (i.e. NOT integers). | |
| 2268 */ | |
| 444 | 2269 (character1, character2)) |
| 428 | 2270 { |
| 444 | 2271 CHECK_CHAR_COERCE_INT (character1); |
| 2272 CHECK_CHAR_COERCE_INT (character2); | |
| 428 | 2273 |
| 444 | 2274 return EQ (character1, character2) ? Qt : Qnil; |
| 428 | 2275 } |
| 2276 | |
| 2277 #if 0 /* Undebugged FSFmacs code */ | |
| 2278 /* Transpose the markers in two regions of the current buffer, and | |
| 2279 adjust the ones between them if necessary (i.e.: if the regions | |
| 2280 differ in size). | |
| 2281 | |
| 2282 Traverses the entire marker list of the buffer to do so, adding an | |
| 2283 appropriate amount to some, subtracting from some, and leaving the | |
| 2284 rest untouched. Most of this is copied from adjust_markers in insdel.c. | |
| 2285 | |
| 2286 It's the caller's job to see that (start1 <= end1 <= start2 <= end2). */ | |
| 2287 | |
| 2288 void | |
| 665 | 2289 transpose_markers (Charbpos start1, Charbpos end1, Charbpos start2, Charbpos end2) |
| 428 | 2290 { |
| 2291 Charcount amt1, amt2, diff; | |
| 2292 Lisp_Object marker; | |
| 2293 struct buffer *buf = current_buffer; | |
| 2294 | |
| 2295 /* Update point as if it were a marker. */ | |
| 2296 if (BUF_PT (buf) < start1) | |
| 2297 ; | |
| 2298 else if (BUF_PT (buf) < end1) | |
| 2299 BUF_SET_PT (buf, BUF_PT (buf) + (end2 - end1)); | |
| 2300 else if (BUF_PT (buf) < start2) | |
| 2301 BUF_SET_PT (buf, BUF_PT (buf) + (end2 - start2) - (end1 - start1)); | |
| 2302 else if (BUF_PT (buf) < end2) | |
| 2303 BUF_SET_PT (buf, BUF_PT (buf) - (start2 - start1)); | |
| 2304 | |
| 2305 /* We used to adjust the endpoints here to account for the gap, but that | |
| 2306 isn't good enough. Even if we assume the caller has tried to move the | |
| 2307 gap out of our way, it might still be at start1 exactly, for example; | |
| 2308 and that places it `inside' the interval, for our purposes. The amount | |
| 2309 of adjustment is nontrivial if there's a `denormalized' marker whose | |
| 2310 position is between GPT and GPT + GAP_SIZE, so it's simpler to leave | |
| 2311 the dirty work to Fmarker_position, below. */ | |
| 2312 | |
| 2313 /* The difference between the region's lengths */ | |
| 2314 diff = (end2 - start2) - (end1 - start1); | |
| 2315 | |
| 2316 /* For shifting each marker in a region by the length of the other | |
| 2317 * region plus the distance between the regions. | |
| 2318 */ | |
| 2319 amt1 = (end2 - start2) + (start2 - end1); | |
| 2320 amt2 = (end1 - start1) + (start2 - end1); | |
| 2321 | |
| 2322 for (marker = BUF_MARKERS (buf); !NILP (marker); | |
| 2323 marker = XMARKER (marker)->chain) | |
| 2324 { | |
| 665 | 2325 Charbpos mpos = marker_position (marker); |
| 428 | 2326 if (mpos >= start1 && mpos < end2) |
| 2327 { | |
| 2328 if (mpos < end1) | |
| 2329 mpos += amt1; | |
| 2330 else if (mpos < start2) | |
| 2331 mpos += diff; | |
| 2332 else | |
| 2333 mpos -= amt2; | |
| 2334 set_marker_position (marker, mpos); | |
| 2335 } | |
| 2336 } | |
| 2337 } | |
| 2338 | |
| 2339 #endif /* 0 */ | |
| 2340 | |
| 2341 DEFUN ("transpose-regions", Ftranspose_regions, 4, 5, 0, /* | |
| 2342 Transpose region START1 to END1 with START2 to END2. | |
| 2343 The regions may not be overlapping, because the size of the buffer is | |
| 2344 never changed in a transposition. | |
| 2345 | |
| 444 | 2346 Optional fifth arg LEAVE-MARKERS, if non-nil, means don't transpose |
| 428 | 2347 any markers that happen to be located in the regions. (#### BUG: currently |
| 444 | 2348 this function always acts as if LEAVE-MARKERS is non-nil.) |
| 428 | 2349 |
| 2350 Transposing beyond buffer boundaries is an error. | |
| 2351 */ | |
| 2286 | 2352 (start1, end1, start2, end2, UNUSED (leave_markers))) |
| 428 | 2353 { |
| 665 | 2354 Charbpos startr1, endr1, startr2, endr2; |
| 428 | 2355 Charcount len1, len2; |
| 2356 Lisp_Object string1, string2; | |
| 2357 struct buffer *buf = current_buffer; | |
| 2358 | |
| 444 | 2359 get_buffer_range_char (buf, start1, end1, &startr1, &endr1, 0); |
| 2360 get_buffer_range_char (buf, start2, end2, &startr2, &endr2, 0); | |
| 428 | 2361 |
| 444 | 2362 len1 = endr1 - startr1; |
| 2363 len2 = endr2 - startr2; | |
| 428 | 2364 |
| 444 | 2365 if (startr2 < endr1) |
| 563 | 2366 invalid_argument ("transposed regions not properly ordered", Qunbound); |
| 444 | 2367 else if (startr1 == endr1 || startr2 == endr2) |
| 563 | 2368 invalid_argument ("transposed region may not be of length 0", Qunbound); |
| 428 | 2369 |
| 444 | 2370 string1 = make_string_from_buffer (buf, startr1, len1); |
| 2371 string2 = make_string_from_buffer (buf, startr2, len2); | |
| 2372 buffer_delete_range (buf, startr2, endr2, 0); | |
| 2373 buffer_insert_lisp_string_1 (buf, startr2, string1, 0); | |
| 2374 buffer_delete_range (buf, startr1, endr1, 0); | |
| 2375 buffer_insert_lisp_string_1 (buf, startr1, string2, 0); | |
| 428 | 2376 |
| 2377 /* In FSFmacs there is a whole bunch of really ugly code here | |
| 2378 to attempt to transpose the regions without using up any | |
| 2379 extra memory. Although the intent may be good, the result | |
| 2380 was highly bogus. */ | |
| 2381 | |
| 2382 return Qnil; | |
| 2383 } | |
| 2384 | |
| 2385 | |
| 2386 /************************************************************************/ | |
| 2387 /* initialization */ | |
| 2388 /************************************************************************/ | |
| 2389 | |
| 2390 void | |
| 2391 syms_of_editfns (void) | |
| 2392 { | |
| 563 | 2393 DEFSYMBOL (Qpoint); |
| 2394 DEFSYMBOL (Qmark); | |
| 2395 DEFSYMBOL (Qregion_beginning); | |
| 2396 DEFSYMBOL (Qregion_end); | |
| 2397 DEFSYMBOL (Qformat); | |
| 2398 DEFSYMBOL (Quser_files_and_directories); | |
| 428 | 2399 |
| 2400 DEFSUBR (Fchar_equal); | |
| 2401 DEFSUBR (Fchar_Equal); | |
| 2402 DEFSUBR (Fgoto_char); | |
| 2403 DEFSUBR (Fstring_to_char); | |
| 2404 DEFSUBR (Fchar_to_string); | |
| 2405 DEFSUBR (Fbuffer_substring); | |
| 2406 DEFSUBR (Fbuffer_substring_no_properties); | |
| 2407 | |
| 2408 DEFSUBR (Fpoint_marker); | |
| 2409 DEFSUBR (Fmark_marker); | |
| 2410 DEFSUBR (Fpoint); | |
| 2411 DEFSUBR (Fregion_beginning); | |
| 2412 DEFSUBR (Fregion_end); | |
| 2413 DEFSUBR (Fsave_excursion); | |
| 2414 DEFSUBR (Fsave_current_buffer); | |
| 2415 | |
| 2416 DEFSUBR (Fbuffer_size); | |
| 2417 DEFSUBR (Fpoint_max); | |
| 2418 DEFSUBR (Fpoint_min); | |
| 2419 DEFSUBR (Fpoint_min_marker); | |
| 2420 DEFSUBR (Fpoint_max_marker); | |
| 2421 | |
| 2422 DEFSUBR (Fbobp); | |
| 2423 DEFSUBR (Feobp); | |
| 2424 DEFSUBR (Fbolp); | |
| 2425 DEFSUBR (Feolp); | |
| 2426 DEFSUBR (Ffollowing_char); | |
| 2427 DEFSUBR (Fpreceding_char); | |
| 2428 DEFSUBR (Fchar_after); | |
| 2429 DEFSUBR (Fchar_before); | |
| 2430 DEFSUBR (Finsert); | |
| 2431 DEFSUBR (Finsert_string); | |
| 2432 DEFSUBR (Finsert_before_markers); | |
| 2433 DEFSUBR (Finsert_char); | |
| 2434 | |
| 2435 DEFSUBR (Ftemp_directory); | |
| 2436 DEFSUBR (Fuser_login_name); | |
| 2437 DEFSUBR (Fuser_real_login_name); | |
| 2438 DEFSUBR (Fuser_uid); | |
| 2439 DEFSUBR (Fuser_real_uid); | |
| 2440 DEFSUBR (Fuser_full_name); | |
| 2441 DEFSUBR (Fuser_home_directory); | |
| 2442 DEFSUBR (Femacs_pid); | |
| 2443 DEFSUBR (Fcurrent_time); | |
| 2444 DEFSUBR (Fcurrent_process_time); | |
| 2445 DEFSUBR (Fformat_time_string); | |
| 2446 DEFSUBR (Fdecode_time); | |
| 2447 DEFSUBR (Fencode_time); | |
| 2448 DEFSUBR (Fcurrent_time_string); | |
| 2449 DEFSUBR (Fcurrent_time_zone); | |
| 2450 DEFSUBR (Fset_time_zone_rule); | |
| 2451 DEFSUBR (Fsystem_name); | |
| 2452 DEFSUBR (Fformat); | |
| 2453 | |
| 2454 DEFSUBR (Finsert_buffer_substring); | |
| 2455 DEFSUBR (Fcompare_buffer_substrings); | |
| 2456 DEFSUBR (Fsubst_char_in_region); | |
| 2457 DEFSUBR (Ftranslate_region); | |
| 2458 DEFSUBR (Fdelete_region); | |
| 2459 DEFSUBR (Fwiden); | |
| 2460 DEFSUBR (Fnarrow_to_region); | |
| 2461 DEFSUBR (Fsave_restriction); | |
| 2462 DEFSUBR (Ftranspose_regions); | |
| 2463 | |
| 563 | 2464 DEFSYMBOL (Qzmacs_update_region); |
| 2465 DEFSYMBOL (Qzmacs_deactivate_region); | |
| 2466 DEFSYMBOL (Qzmacs_region_buffer); | |
| 428 | 2467 } |
| 2468 | |
| 2469 void | |
| 2470 vars_of_editfns (void) | |
| 2471 { | |
| 2472 staticpro (&Vsystem_name); | |
| 2473 #if 0 | |
| 2474 staticpro (&Vuser_name); | |
| 2475 staticpro (&Vuser_real_name); | |
| 2476 #endif | |
| 2477 DEFVAR_BOOL ("zmacs-regions", &zmacs_regions /* | |
| 2478 *Whether LISPM-style active regions should be used. | |
| 2479 This means that commands which operate on the region (the area between the | |
| 2480 point and the mark) will only work while the region is in the ``active'' | |
| 2481 state, which is indicated by highlighting. Executing most commands causes | |
| 2482 the region to not be in the active state, so (for example) \\[kill-region] will only | |
| 2483 work immediately after activating the region. | |
| 2484 | |
| 2485 More specifically: | |
| 2486 | |
| 2487 - Commands which operate on the region only work if the region is active. | |
| 2488 - Only a very small set of commands cause the region to become active: | |
| 444 | 2489 Those commands whose semantics are to mark an area, like `mark-defun'. |
| 428 | 2490 - The region is deactivated after each command that is executed, except that: |
| 2491 - "Motion" commands do not change whether the region is active or not. | |
| 2492 | |
| 2493 set-mark-command (C-SPC) pushes a mark and activates the region. Moving the | |
| 2494 cursor with normal motion commands (C-n, C-p, etc) will cause the region | |
| 2495 between point and the recently-pushed mark to be highlighted. It will | |
| 2496 remain highlighted until some non-motion command is executed. | |
| 2497 | |
| 2498 exchange-point-and-mark (\\[exchange-point-and-mark]) activates the region. So if you mark a | |
| 2499 region and execute a command that operates on it, you can reactivate the | |
| 2500 same region with \\[exchange-point-and-mark] (or perhaps \\[exchange-point-and-mark] \\[exchange-point-and-mark]) to operate on it | |
| 2501 again. | |
| 2502 | |
| 2503 Generally, commands which push marks as a means of navigation (like | |
| 2504 beginning-of-buffer and end-of-buffer (M-< and M->)) do not activate the | |
| 2505 region. But commands which push marks as a means of marking an area of | |
| 2506 text (like mark-defun (\\[mark-defun]), mark-word (\\[mark-word]) or mark-whole-buffer (\\[mark-whole-buffer])) | |
| 2507 do activate the region. | |
| 2508 | |
| 2509 The way the command loop actually works with regard to deactivating the | |
| 2510 region is as follows: | |
| 2511 | |
| 2512 - If the variable `zmacs-region-stays' has been set to t during the command | |
| 2513 just executed, the region is left alone (this is how the motion commands | |
| 2514 make the region stay around; see the `_' flag in the `interactive' | |
| 2515 specification). `zmacs-region-stays' is reset to nil before each command | |
| 2516 is executed. | |
| 2517 - If the function `zmacs-activate-region' has been called during the command | |
| 2518 just executed, the region is left alone. Very few functions should | |
| 2519 actually call this function. | |
| 2520 - Otherwise, if the region is active, the region is deactivated and | |
| 2521 the `zmacs-deactivate-region-hook' is called. | |
| 2522 */ ); | |
| 2523 /* Zmacs style active regions are now ON by default */ | |
| 2524 zmacs_regions = 1; | |
| 2525 | |
| 2526 DEFVAR_BOOL ("zmacs-region-active-p", &zmacs_region_active_p /* | |
| 2527 Do not alter this. It is for internal use only. | |
| 2528 */ ); | |
| 2529 zmacs_region_active_p = 0; | |
| 2530 | |
| 2531 DEFVAR_BOOL ("zmacs-region-stays", &zmacs_region_stays /* | |
| 2532 Whether the current command will deactivate the region. | |
| 2533 Commands which do not wish to affect whether the region is currently | |
| 2534 highlighted should set this to t. Normally, the region is turned off after | |
| 2535 executing each command that did not explicitly turn it on with the function | |
| 2536 zmacs-activate-region. Setting this to true lets a command be non-intrusive. | |
| 2537 See the variable `zmacs-regions'. | |
| 2538 | |
| 2539 The same effect can be achieved using the `_' interactive specification. | |
| 442 | 2540 |
| 2541 `zmacs-region-stays' is reset to nil before each command is executed. | |
| 428 | 2542 */ ); |
| 2543 zmacs_region_stays = 0; | |
| 2544 | |
| 2545 DEFVAR_BOOL ("atomic-extent-goto-char-p", &atomic_extent_goto_char_p /* | |
| 2546 Do not use this -- it will be going away soon. | |
| 2547 Indicates if `goto-char' has just been run. This information is allegedly | |
| 2548 needed to get the desired behavior for atomic extents and unfortunately | |
| 2549 is not available by any other means. | |
| 2550 */ ); | |
| 2551 atomic_extent_goto_char_p = 0; | |
| 2552 #ifdef AMPERSAND_FULL_NAME | |
| 771 | 2553 Fprovide (intern ("ampersand-full-name")); |
| 428 | 2554 #endif |
| 2555 | |
| 2556 DEFVAR_LISP ("user-full-name", &Vuser_full_name /* | |
| 2557 *The name of the user. | |
| 4266 | 2558 The function `user-full-name' will return the value of this variable, when |
| 2559 called without arguments. | |
| 428 | 2560 This is initialized to the value of the NAME environment variable. |
| 2561 */ ); | |
| 2562 /* Initialized at run-time. */ | |
| 2563 Vuser_full_name = Qnil; | |
| 2564 } |