Mercurial > hg > xemacs-beta
annotate src/editfns.c @ 4733:a5210e70ffbe
No need to fatal () on startup if $PWD doesn't exist; chdir to "/" instead.
src/ChangeLog addition:
2009-11-08 Aidan Kehoe <kehoea@parhasard.net>
* sysfile.h (DEFAULT_DIRECTORY_FALLBACK):
New #define, "/" on Unix and "C:\\" on Win32 native, a directory
that should "always" be available.
* fileio.c (Fexpand_file_name): Use DEFAULT_DIRECTORY_FALLBACK
here, instead of conditionalising on WIN32_NATIVE.
* editfns.c (get_home_directory):
Use DEFAULT_DIRECTORY_FALLBACK if looking up the home directory
fails, on both Windows and Unix.
* buffer.c (init_initial_directory):
Don't give a fatal error if the current directory doesn't exist,
chdir to DEFAULT_DIRECTORY_FALLBACK instead.
| author | Aidan Kehoe <kehoea@parhasard.net> |
|---|---|
| date | Sun, 08 Nov 2009 17:27:26 +0000 |
| parents | 80cd90837ac5 |
| children | d261888e5069 |
| rev | line source |
|---|---|
| 428 | 1 /* Lisp functions pertaining to editing. |
| 2 Copyright (C) 1985-1987, 1989, 1992-1995 Free Software Foundation, Inc. | |
| 3 Copyright (C) 1995 Tinker Systems and INS Engineering Corp. | |
| 2367 | 4 Copyright (C) 1996, 2001, 2002, 2004 Ben Wing. |
| 428 | 5 |
| 6 This file is part of XEmacs. | |
| 7 | |
| 8 XEmacs is free software; you can redistribute it and/or modify it | |
| 9 under the terms of the GNU General Public License as published by the | |
| 10 Free Software Foundation; either version 2, or (at your option) any | |
| 11 later version. | |
| 12 | |
| 13 XEmacs is distributed in the hope that it will be useful, but WITHOUT | |
| 14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 16 for more details. | |
| 17 | |
| 18 You should have received a copy of the GNU General Public License | |
| 19 along with XEmacs; see the file COPYING. If not, write to | |
| 20 the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
| 21 Boston, MA 02111-1307, USA. */ | |
| 22 | |
| 23 /* Synched up with: Mule 2.0, FSF 19.30. */ | |
| 24 | |
| 771 | 25 /* This file has been Mule-ized, June 2001. */ |
| 428 | 26 |
| 27 /* Hacked on for Mule by Ben Wing, December 1994. */ | |
| 28 | |
| 29 #include <config.h> | |
| 30 #include "lisp.h" | |
| 31 | |
| 32 #include "buffer.h" | |
| 800 | 33 #include "casetab.h" |
| 34 #include "chartab.h" | |
| 877 | 35 #include "commands.h" /* for zmacs_region functions */ |
| 800 | 36 #include "device.h" |
| 428 | 37 #include "events.h" /* for EVENTP */ |
| 38 #include "frame.h" | |
| 39 #include "insdel.h" | |
| 800 | 40 #include "line-number.h" |
| 872 | 41 #include "process.h" |
| 428 | 42 #include "window.h" |
| 43 | |
| 800 | 44 #include "sysdep.h" |
| 45 #include "sysdir.h" | |
| 46 #include "sysfile.h" | |
| 47 #include "sysproc.h" /* for qxe_getpid() */ | |
| 48 #include "syspwd.h" | |
| 428 | 49 #include "systime.h" |
| 50 | |
| 51 /* Some static data, and a function to initialize it for each run */ | |
| 52 | |
| 53 Lisp_Object Vsystem_name; /* #### - I don't see why this should be */ | |
| 54 /* static, either... --Stig */ | |
| 55 #if 0 /* XEmacs - this is now dynamic */ | |
| 56 /* if at some point it's deemed desirable to | |
| 57 use lisp variables here, then they can be | |
| 58 initialized to nil and then set to their | |
| 59 real values upon the first call to the | |
| 60 functions that generate them. --stig */ | |
| 61 Lisp_Object Vuser_real_login_name; /* login name of current user ID */ | |
| 62 Lisp_Object Vuser_login_name; /* user name from LOGNAME or USER. */ | |
| 63 #endif | |
| 64 | |
| 65 /* It's useful to be able to set this as user customization, so we'll | |
| 66 keep it. */ | |
| 67 Lisp_Object Vuser_full_name; | |
| 68 EXFUN (Fuser_full_name, 1); | |
| 69 | |
| 70 Lisp_Object Qformat; | |
| 71 | |
| 72 Lisp_Object Qpoint, Qmark, Qregion_beginning, Qregion_end; | |
| 73 | |
| 74 Lisp_Object Quser_files_and_directories; | |
| 75 | |
| 76 /* This holds the value of `environ' produced by the previous | |
| 77 call to Fset_time_zone_rule, or 0 if Fset_time_zone_rule | |
| 78 has never been called. */ | |
| 771 | 79 static Extbyte **environbuf; |
| 428 | 80 |
| 81 void | |
| 82 init_editfns (void) | |
| 83 { | |
| 84 /* Only used in removed code below. */ | |
| 867 | 85 Ibyte *p; |
| 428 | 86 |
| 87 environbuf = 0; | |
| 88 | |
| 89 /* Set up system_name even when dumping. */ | |
| 90 init_system_name (); | |
| 91 | |
| 92 if (!initialized) | |
| 93 return; | |
| 94 | |
| 771 | 95 if ((p = egetenv ("NAME"))) |
| 428 | 96 /* I don't think it's the right thing to do the ampersand |
| 97 modification on NAME. Not that it matters anymore... -hniksic */ | |
| 771 | 98 Vuser_full_name = build_intstring (p); |
| 428 | 99 else |
| 100 Vuser_full_name = Fuser_full_name (Qnil); | |
| 101 } | |
| 102 | |
| 103 DEFUN ("char-to-string", Fchar_to_string, 1, 1, 0, /* | |
| 444 | 104 Convert CHARACTER to a one-character string containing that character. |
| 428 | 105 */ |
| 444 | 106 (character)) |
| 428 | 107 { |
| 108 Bytecount len; | |
| 867 | 109 Ibyte str[MAX_ICHAR_LEN]; |
| 428 | 110 |
| 444 | 111 if (EVENTP (character)) |
| 428 | 112 { |
| 2862 | 113 Lisp_Object ch2 = Fevent_to_character (character, Qt, Qnil, Qnil); |
| 428 | 114 if (NILP (ch2)) |
| 563 | 115 invalid_argument |
| 2828 | 116 ("key has no character equivalent:", Fcopy_event (character, Qnil)); |
| 444 | 117 character = ch2; |
| 428 | 118 } |
| 119 | |
| 444 | 120 CHECK_CHAR_COERCE_INT (character); |
| 428 | 121 |
| 867 | 122 len = set_itext_ichar (str, XCHAR (character)); |
| 428 | 123 return make_string (str, len); |
| 124 } | |
| 125 | |
| 126 DEFUN ("string-to-char", Fstring_to_char, 1, 1, 0, /* | |
| 127 Convert arg STRING to a character, the first character of that string. | |
| 128 An empty string will return the constant `nil'. | |
| 129 */ | |
| 444 | 130 (string)) |
| 428 | 131 { |
| 444 | 132 CHECK_STRING (string); |
| 428 | 133 |
| 793 | 134 if (XSTRING_LENGTH (string) != 0) |
| 867 | 135 return make_char (string_ichar (string, 0)); |
| 428 | 136 else |
| 137 /* This used to return Qzero. That is broken, broken, broken. */ | |
| 138 /* It might be kinder to signal an error directly. -slb */ | |
| 139 return Qnil; | |
| 140 } | |
| 141 | |
| 142 | |
| 143 static Lisp_Object | |
| 665 | 144 buildmark (Charbpos val, Lisp_Object buffer) |
| 428 | 145 { |
| 146 Lisp_Object mark = Fmake_marker (); | |
| 147 Fset_marker (mark, make_int (val), buffer); | |
| 148 return mark; | |
| 149 } | |
| 150 | |
| 151 DEFUN ("point", Fpoint, 0, 1, 0, /* | |
| 152 Return value of point, as an integer. | |
| 153 Beginning of buffer is position (point-min). | |
| 154 If BUFFER is nil, the current buffer is assumed. | |
| 155 */ | |
| 156 (buffer)) | |
| 157 { | |
| 158 struct buffer *b = decode_buffer (buffer, 1); | |
| 159 return make_int (BUF_PT (b)); | |
| 160 } | |
| 161 | |
| 162 DEFUN ("point-marker", Fpoint_marker, 0, 2, 0, /* | |
| 163 Return value of point, as a marker object. | |
| 164 This marker is a copy; you may modify it with reckless abandon. | |
| 165 If optional argument DONT-COPY-P is non-nil, then it returns the real | |
| 166 point-marker; modifying the position of this marker will move point. | |
| 167 It is illegal to change the buffer of it, or make it point nowhere. | |
| 168 If BUFFER is nil, the current buffer is assumed. | |
| 169 */ | |
| 170 (dont_copy_p, buffer)) | |
| 171 { | |
| 172 struct buffer *b = decode_buffer (buffer, 1); | |
| 173 if (NILP (dont_copy_p)) | |
| 174 return Fcopy_marker (b->point_marker, Qnil); | |
| 175 else | |
| 176 return b->point_marker; | |
| 177 } | |
| 178 | |
| 179 /* | |
| 180 * Chuck says: | |
| 181 * There is no absolute way to determine if goto-char is the function | |
| 182 * being run. this-command doesn't work because it is often eval'd | |
| 183 * and this-command ends up set to eval-expression. So this flag gets | |
| 184 * added for now. | |
| 185 * | |
| 186 * Jamie thinks he's wrong, but we'll leave this in for now. | |
| 187 */ | |
| 188 int atomic_extent_goto_char_p; | |
| 189 | |
| 190 DEFUN ("goto-char", Fgoto_char, 1, 2, "NGoto char: ", /* | |
| 191 Set point to POSITION, a number or marker. | |
| 192 Beginning of buffer is position (point-min), end is (point-max). | |
| 193 If BUFFER is nil, the current buffer is assumed. | |
| 194 Return value of POSITION, as an integer. | |
| 195 */ | |
| 196 (position, buffer)) | |
| 197 { | |
| 198 struct buffer *b = decode_buffer (buffer, 1); | |
| 665 | 199 Charbpos n = get_buffer_pos_char (b, position, GB_COERCE_RANGE); |
| 428 | 200 BUF_SET_PT (b, n); |
| 201 atomic_extent_goto_char_p = 1; | |
| 202 return make_int (n); | |
| 203 } | |
| 204 | |
| 205 static Lisp_Object | |
| 206 region_limit (int beginningp, struct buffer *b) | |
| 207 { | |
| 208 Lisp_Object m; | |
| 209 | |
| 210 #if 0 /* FSFmacs */ | |
| 211 if (!NILP (Vtransient_mark_mode) && NILP (Vmark_even_if_inactive) | |
| 212 && NILP (b->mark_active)) | |
| 213 Fsignal (Qmark_inactive, Qnil); | |
| 214 #endif | |
| 215 m = Fmarker_position (b->mark); | |
| 563 | 216 if (NILP (m)) invalid_operation ("There is no region now", Qunbound); |
| 428 | 217 if (!!(BUF_PT (b) < XINT (m)) == !!beginningp) |
| 218 return make_int (BUF_PT (b)); | |
| 219 else | |
| 220 return m; | |
| 221 } | |
| 222 | |
| 223 DEFUN ("region-beginning", Fregion_beginning, 0, 1, 0, /* | |
| 224 Return position of beginning of region in BUFFER, as an integer. | |
| 225 If BUFFER is nil, the current buffer is assumed. | |
| 226 */ | |
| 227 (buffer)) | |
| 228 { | |
| 229 return region_limit (1, decode_buffer (buffer, 1)); | |
| 230 } | |
| 231 | |
| 232 DEFUN ("region-end", Fregion_end, 0, 1, 0, /* | |
| 233 Return position of end of region in BUFFER, as an integer. | |
| 234 If BUFFER is nil, the current buffer is assumed. | |
| 235 */ | |
| 236 (buffer)) | |
| 237 { | |
| 238 return region_limit (0, decode_buffer (buffer, 1)); | |
| 239 } | |
| 240 | |
| 241 /* Whether to use lispm-style active-regions */ | |
| 242 int zmacs_regions; | |
| 243 | |
| 244 /* Whether the zmacs region is active. This is not per-buffer because | |
| 245 there can be only one active region at a time. #### Now that the | |
| 246 zmacs region are not directly tied to the X selections this may not | |
| 247 necessarily have to be true. */ | |
| 248 int zmacs_region_active_p; | |
| 249 | |
| 250 int zmacs_region_stays; | |
| 251 | |
| 252 Lisp_Object Qzmacs_update_region, Qzmacs_deactivate_region; | |
| 253 Lisp_Object Qzmacs_region_buffer; | |
| 254 | |
| 255 void | |
| 256 zmacs_update_region (void) | |
| 257 { | |
| 258 /* This function can GC */ | |
| 259 if (zmacs_region_active_p) | |
| 260 call0 (Qzmacs_update_region); | |
| 261 } | |
| 262 | |
| 263 void | |
| 264 zmacs_deactivate_region (void) | |
| 265 { | |
| 266 /* This function can GC */ | |
| 267 if (zmacs_region_active_p) | |
| 268 call0 (Qzmacs_deactivate_region); | |
| 269 } | |
| 270 | |
| 271 Lisp_Object | |
| 272 zmacs_region_buffer (void) | |
| 273 { | |
| 274 if (zmacs_region_active_p) | |
| 275 return call0 (Qzmacs_region_buffer); | |
| 276 else | |
| 277 return Qnil; | |
| 278 } | |
| 279 | |
| 280 DEFUN ("mark-marker", Fmark_marker, 0, 2, 0, /* | |
| 281 Return this buffer's mark, as a marker object. | |
| 282 If `zmacs-regions' is true, then this returns nil unless the region is | |
| 283 currently in the active (highlighted) state. If optional argument FORCE | |
| 284 is t, this returns the mark (if there is one) regardless of the zmacs-region | |
| 285 state. You should *generally* not use the mark unless the region is active, | |
| 286 if the user has expressed a preference for the zmacs-region model. | |
| 287 Watch out! Moving this marker changes the mark position. | |
| 288 If you set the marker not to point anywhere, the buffer will have no mark. | |
| 289 If BUFFER is nil, the current buffer is assumed. | |
| 290 */ | |
| 291 (force, buffer)) | |
| 292 { | |
| 293 struct buffer *b = decode_buffer (buffer, 1); | |
| 294 if (! zmacs_regions || zmacs_region_active_p || !NILP (force)) | |
| 295 return b->mark; | |
| 296 return Qnil; | |
| 297 } | |
| 298 | |
| 299 | |
| 300 /* The saved object is a cons: | |
| 301 | |
| 302 (COPY-OF-POINT-MARKER . COPY-OF-MARK) | |
| 303 | |
| 304 We used to have another cons for a VISIBLE-P element, which was t | |
| 305 if `(eq (current-buffer) (window-buffer (selected-window)))' but it | |
| 306 was unused for a long time, so I removed it. --hniksic */ | |
| 307 Lisp_Object | |
| 308 save_excursion_save (void) | |
| 309 { | |
| 310 struct buffer *b; | |
| 311 | |
| 853 | 312 /* There was once a check for preparing_for_armageddon here, which |
| 313 did nothing; perhaps a left-over from FSF Emacs. Obviously | |
| 314 incorrect. --ben */ | |
| 428 | 315 |
| 800 | 316 #ifdef ERROR_CHECK_TEXT |
| 428 | 317 assert (XINT (Fpoint (Qnil)) == |
| 318 XINT (Fmarker_position (Fpoint_marker (Qt, Qnil)))); | |
| 319 #endif | |
| 320 | |
| 321 b = current_buffer; | |
| 322 | |
| 323 return noseeum_cons (noseeum_copy_marker (b->point_marker, Qnil), | |
| 324 noseeum_copy_marker (b->mark, Qnil)); | |
| 325 } | |
| 326 | |
| 327 Lisp_Object | |
| 328 save_excursion_restore (Lisp_Object info) | |
| 329 { | |
| 330 Lisp_Object buffer = Fmarker_buffer (XCAR (info)); | |
| 331 | |
| 332 /* If buffer being returned to is now deleted, avoid error -- | |
| 333 otherwise could get error here while unwinding to top level and | |
| 334 crash. In that case, Fmarker_buffer returns nil now. */ | |
| 335 if (!NILP (buffer)) | |
| 336 { | |
| 337 struct buffer *buf = XBUFFER (buffer); | |
| 338 struct gcpro gcpro1; | |
| 339 GCPRO1 (info); | |
| 340 set_buffer_internal (buf); | |
| 341 Fgoto_char (XCAR (info), buffer); | |
| 342 Fset_marker (buf->mark, XCDR (info), buffer); | |
| 343 | |
| 344 #if 0 /* We used to make the current buffer visible in the selected window | |
| 345 if that was true previously. That avoids some anomalies. | |
| 346 But it creates others, and it wasn't documented, and it is simpler | |
| 347 and cleaner never to alter the window/buffer connections. */ | |
| 348 /* I'm certain some code somewhere depends on this behavior. --jwz */ | |
| 349 /* Even if it did, it certainly doesn't matter anymore, because | |
| 350 this has been the behavior for countless XEmacs releases | |
| 351 now. --hniksic */ | |
| 352 if (visible | |
| 353 && (current_buffer != XBUFFER (XWINDOW (selected_window)->buffer))) | |
| 354 switch_to_buffer (Fcurrent_buffer (), Qnil); | |
| 355 #endif | |
| 356 | |
| 357 UNGCPRO; | |
| 358 } | |
| 359 | |
| 360 /* Free all the junk we allocated, so that a `save-excursion' comes | |
| 361 for free in terms of GC junk. */ | |
| 1204 | 362 free_marker (XCAR (info)); |
| 363 free_marker (XCDR (info)); | |
| 853 | 364 free_cons (info); |
| 428 | 365 return Qnil; |
| 366 } | |
| 367 | |
| 368 DEFUN ("save-excursion", Fsave_excursion, 0, UNEVALLED, 0, /* | |
| 369 Save point, mark, and current buffer; execute BODY; restore those things. | |
| 370 Executes BODY just like `progn'. | |
| 371 The values of point, mark and the current buffer are restored | |
| 372 even in case of abnormal exit (throw or error). | |
|
4693
80cd90837ac5
Add argument information to remaining MANY or UNEVALLED C subrs.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4470
diff
changeset
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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 | |
| 771 | 652 return build_intstring (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 */ | |
| 771 | 681 return returned_name ? build_intstring (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 | |
| 793 | 747 return build_string (pw ? pw->pw_name : "unknown"); |
| 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) |
| 1726 | 834 xfree (cached_home_directory, Ibyte *); |
| 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 | |
|
4733
a5210e70ffbe
No need to fatal () on startup if $PWD doesn't exist; chdir to "/" instead.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4693
diff
changeset
|
865 #endif /* !WIN32_NATIVE */ |
| 428 | 866 { |
|
4733
a5210e70ffbe
No need to fatal () on startup if $PWD doesn't exist; chdir to "/" instead.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4693
diff
changeset
|
867 /* Unix, typically. |
|
a5210e70ffbe
No need to fatal () on startup if $PWD doesn't exist; chdir to "/" instead.
Aidan Kehoe <kehoea@parhasard.net>
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
No need to fatal () on startup if $PWD doesn't exist; chdir to "/" instead.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4693
diff
changeset
|
870 before falling back to this. */ |
|
a5210e70ffbe
No need to fatal () on startup if $PWD doesn't exist; chdir to "/" instead.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4693
diff
changeset
|
871 cached_home_directory = qxestrdup (DEFAULT_DIRECTORY_FALLBACK); |
| 428 | 872 output_home_warning = 1; |
| 873 } | |
| 874 } | |
| 875 if (initialized && output_home_warning) | |
| 876 { | |
| 877 warn_when_safe (Quser_files_and_directories, Qwarning, "\n" | |
| 878 " XEmacs was unable to determine a good value for the user's $HOME\n" | |
| 879 " directory, and will be using the value:\n" | |
| 880 " %s\n" | |
| 881 " This is probably incorrect.", | |
| 882 cached_home_directory | |
| 883 ); | |
| 884 } | |
| 885 } | |
| 886 return cached_home_directory; | |
| 887 } | |
| 888 | |
| 889 DEFUN ("user-home-directory", Fuser_home_directory, 0, 0, 0, /* | |
| 890 Return the user's home directory, as a string. | |
| 891 */ | |
| 892 ()) | |
| 893 { | |
| 867 | 894 Ibyte *path = get_home_directory (); |
| 428 | 895 |
| 771 | 896 return !path ? Qnil : |
| 897 Fexpand_file_name (Fsubstitute_in_file_name (build_intstring (path)), | |
| 428 | 898 Qnil); |
| 899 } | |
| 900 | |
| 901 DEFUN ("system-name", Fsystem_name, 0, 0, 0, /* | |
| 902 Return the name of the machine you are running on, as a string. | |
| 903 */ | |
| 904 ()) | |
| 905 { | |
| 771 | 906 return Fcopy_sequence (Vsystem_name); |
| 428 | 907 } |
| 908 | |
| 909 DEFUN ("emacs-pid", Femacs_pid, 0, 0, 0, /* | |
| 910 Return the process ID of Emacs, as an integer. | |
| 911 */ | |
| 912 ()) | |
| 913 { | |
| 771 | 914 return make_int (qxe_getpid ()); |
| 428 | 915 } |
| 916 | |
| 917 DEFUN ("current-time", Fcurrent_time, 0, 0, 0, /* | |
| 918 Return the current time, as the number of seconds since 1970-01-01 00:00:00. | |
| 919 The time is returned as a list of three integers. The first has the | |
| 920 most significant 16 bits of the seconds, while the second has the | |
| 921 least significant 16 bits. The third integer gives the microsecond | |
| 922 count. | |
| 923 | |
| 924 The microsecond count is zero on systems that do not provide | |
| 925 resolution finer than a second. | |
| 926 */ | |
| 927 ()) | |
| 928 { | |
| 929 EMACS_TIME t; | |
| 930 | |
| 931 EMACS_GET_TIME (t); | |
| 932 return list3 (make_int ((EMACS_SECS (t) >> 16) & 0xffff), | |
| 933 make_int ((EMACS_SECS (t) >> 0) & 0xffff), | |
| 934 make_int (EMACS_USECS (t))); | |
| 935 } | |
| 936 | |
| 937 DEFUN ("current-process-time", Fcurrent_process_time, 0, 0, 0, /* | |
| 938 Return the amount of time used by this XEmacs process so far. | |
| 939 The return value is a list of three floating-point numbers, expressing | |
| 940 the user, system, and real times used by the process. The user time | |
| 941 measures the time actually spent by the CPU executing the code in this | |
| 942 process. The system time measures time spent by the CPU executing kernel | |
| 943 code on behalf of this process (e.g. I/O requests made by the process). | |
| 944 | |
| 945 Note that the user and system times measure processor time, as opposed | |
| 946 to real time, and only accrue when the processor is actually doing | |
| 947 something: Time spent in an idle wait (waiting for user events to come | |
| 948 in or for I/O on a disk drive or other device to complete) does not | |
| 949 count. Thus, the user and system times will often be considerably | |
| 950 less than the real time. | |
| 951 | |
| 952 Some systems do not allow the user and system times to be distinguished. | |
| 953 In this case, the user time will be the total processor time used by | |
| 954 the process, and the system time will be 0. | |
| 955 | |
| 956 Some systems do not allow the real and processor times to be distinguished. | |
| 957 In this case, the user and real times will be the same and the system | |
| 958 time will be 0. | |
| 959 */ | |
| 960 ()) | |
| 961 { | |
| 962 double user, sys, real; | |
| 963 | |
| 964 get_process_times (&user, &sys, &real); | |
| 965 return list3 (make_float (user), make_float (sys), make_float (real)); | |
| 966 } | |
| 967 | |
| 968 | |
| 969 int lisp_to_time (Lisp_Object specified_time, time_t *result); | |
| 970 int | |
| 971 lisp_to_time (Lisp_Object specified_time, time_t *result) | |
| 972 { | |
| 973 Lisp_Object high, low; | |
| 974 | |
| 975 if (NILP (specified_time)) | |
| 976 return time (result) != -1; | |
| 977 | |
| 978 CHECK_CONS (specified_time); | |
| 979 high = XCAR (specified_time); | |
| 980 low = XCDR (specified_time); | |
| 981 if (CONSP (low)) | |
| 982 low = XCAR (low); | |
| 983 CHECK_INT (high); | |
| 984 CHECK_INT (low); | |
| 985 *result = (XINT (high) << 16) + (XINT (low) & 0xffff); | |
| 986 return *result >> 16 == XINT (high); | |
| 987 } | |
| 988 | |
| 989 Lisp_Object time_to_lisp (time_t the_time); | |
| 990 Lisp_Object | |
| 991 time_to_lisp (time_t the_time) | |
| 992 { | |
| 993 unsigned int item = (unsigned int) the_time; | |
| 994 return Fcons (make_int (item >> 16), make_int (item & 0xffff)); | |
| 995 } | |
| 996 | |
| 771 | 997 size_t emacs_strftime (Extbyte *string, size_t max, const Extbyte *format, |
| 442 | 998 const struct tm *tm); |
| 999 static long difftm (const struct tm *a, const struct tm *b); | |
| 428 | 1000 |
| 1001 | |
| 1002 DEFUN ("format-time-string", Fformat_time_string, 1, 2, 0, /* | |
| 1003 Use FORMAT-STRING to format the time TIME. | |
| 1004 TIME is specified as (HIGH LOW . IGNORED) or (HIGH . LOW), as from | |
| 1005 `current-time' and `file-attributes'. If TIME is not specified it | |
| 1006 defaults to the current time. | |
| 1007 FORMAT-STRING may contain %-sequences to substitute parts of the time. | |
| 1008 %a is replaced by the abbreviated name of the day of week. | |
| 1009 %A is replaced by the full name of the day of week. | |
| 1010 %b is replaced by the abbreviated name of the month. | |
| 1011 %B is replaced by the full name of the month. | |
| 1012 %c is a synonym for "%x %X". | |
| 1013 %C is a locale-specific synonym, which defaults to "%A, %B %e, %Y" in the C locale. | |
| 1014 %d is replaced by the day of month, zero-padded. | |
| 1015 %D is a synonym for "%m/%d/%y". | |
| 1016 %e is replaced by the day of month, blank-padded. | |
| 4203 | 1017 %G is replaced by the year containing the ISO 8601 week |
| 1018 %g is replaced by the year of the ISO 8601 week within the century (00-99) | |
| 428 | 1019 %h is a synonym for "%b". |
| 1020 %H is replaced by the hour (00-23). | |
| 1021 %I is replaced by the hour (00-12). | |
| 1022 %j is replaced by the day of the year (001-366). | |
| 1023 %k is replaced by the hour (0-23), blank padded. | |
| 1024 %l is replaced by the hour (1-12), blank padded. | |
| 1025 %m is replaced by the month (01-12). | |
| 1026 %M is replaced by the minute (00-59). | |
| 1027 %n is a synonym for "\\n". | |
| 1028 %p is replaced by AM or PM, as appropriate. | |
| 1029 %r is a synonym for "%I:%M:%S %p". | |
| 1030 %R is a synonym for "%H:%M". | |
| 1031 %s is replaced by the time in seconds since 00:00:00, Jan 1, 1970 (a | |
| 1032 nonstandard extension) | |
| 1033 %S is replaced by the second (00-60). | |
| 1034 %t is a synonym for "\\t". | |
| 1035 %T is a synonym for "%H:%M:%S". | |
| 1036 %U is replaced by the week of the year (00-53), first day of week is Sunday. | |
| 4203 | 1037 %V is replaced by the ISO 8601 week number |
| 428 | 1038 %w is replaced by the day of week (0-6), Sunday is day 0. |
| 1039 %W is replaced by the week of the year (00-53), first day of week is Monday. | |
| 1040 %x is a locale-specific synonym, which defaults to "%D" in the C locale. | |
| 1041 %X is a locale-specific synonym, which defaults to "%T" in the C locale. | |
| 1042 %y is replaced by the year without century (00-99). | |
| 1043 %Y is replaced by the year with century. | |
| 4203 | 1044 %z is replaced by the time zone as a numeric offset (e.g +0530, -0800 etc.) |
| 428 | 1045 %Z is replaced by the time zone abbreviation. |
| 1046 | |
| 1047 The number of options reflects the `strftime' function. | |
| 1048 | |
| 1049 BUG: If the charset used by the current locale is not ISO 8859-1, the | |
| 1050 characters appearing in the day and month names may be incorrect. | |
| 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() */ |
| 1070 struct tm tm = * localtime(&value); | |
| 1071 | |
| 428 | 1072 *buf = 1; |
| 771 | 1073 |
| 1074 /* !!#### this use of external here is not totally safe, and | |
| 1075 potentially data lossy. */ | |
| 1076 LISP_STRING_TO_EXTERNAL (format_string, formext, Qnative); | |
| 4203 | 1077 if (emacs_strftime (buf, size, formext, &tm) |
| 428 | 1078 || !*buf) |
| 771 | 1079 return build_ext_string (buf, Qnative); |
| 428 | 1080 /* If buffer was too small, make it bigger. */ |
| 1081 size *= 2; | |
| 1082 } | |
| 1083 } | |
| 1084 | |
| 1085 DEFUN ("decode-time", Fdecode_time, 0, 1, 0, /* | |
| 1086 Decode a time value as (SEC MINUTE HOUR DAY MONTH YEAR DOW DST ZONE). | |
| 1087 The optional SPECIFIED-TIME should be a list of (HIGH LOW . IGNORED) | |
| 1088 or (HIGH . LOW), as from `current-time' and `file-attributes', or `nil' | |
| 1089 to use the current time. The list has the following nine members: | |
| 1090 SEC is an integer between 0 and 60; SEC is 60 for a leap second, which | |
| 1091 only some operating systems support. MINUTE is an integer between 0 and 59. | |
| 1092 HOUR is an integer between 0 and 23. DAY is an integer between 1 and 31. | |
| 1093 MONTH is an integer between 1 and 12. YEAR is an integer indicating the | |
| 1094 four-digit year. DOW is the day of week, an integer between 0 and 6, where | |
| 1095 0 is Sunday. DST is t if daylight savings time is effect, otherwise nil. | |
| 1096 ZONE is an integer indicating the number of seconds east of Greenwich. | |
| 1097 \(Note that Common Lisp has different meanings for DOW and ZONE.) | |
| 1098 */ | |
| 1099 (specified_time)) | |
| 1100 { | |
| 1101 time_t time_spec; | |
| 1102 struct tm save_tm; | |
| 1103 struct tm *decoded_time; | |
| 1104 Lisp_Object list_args[9]; | |
| 1105 | |
| 1106 if (! lisp_to_time (specified_time, &time_spec)) | |
| 563 | 1107 invalid_argument ("Invalid time specification", Qunbound); |
| 428 | 1108 |
| 1109 decoded_time = localtime (&time_spec); | |
| 1110 list_args[0] = make_int (decoded_time->tm_sec); | |
| 1111 list_args[1] = make_int (decoded_time->tm_min); | |
| 1112 list_args[2] = make_int (decoded_time->tm_hour); | |
| 1113 list_args[3] = make_int (decoded_time->tm_mday); | |
| 1114 list_args[4] = make_int (decoded_time->tm_mon + 1); | |
| 1115 list_args[5] = make_int (decoded_time->tm_year + 1900); | |
| 1116 list_args[6] = make_int (decoded_time->tm_wday); | |
| 1117 list_args[7] = (decoded_time->tm_isdst)? Qt : Qnil; | |
| 1118 | |
| 1119 /* Make a copy, in case gmtime modifies the struct. */ | |
| 1120 save_tm = *decoded_time; | |
| 1121 decoded_time = gmtime (&time_spec); | |
| 1122 if (decoded_time == 0) | |
| 1123 list_args[8] = Qnil; | |
| 1124 else | |
| 1125 list_args[8] = make_int (difftm (&save_tm, decoded_time)); | |
| 1126 return Flist (9, list_args); | |
| 1127 } | |
| 1128 | |
| 771 | 1129 static void set_time_zone_rule (Extbyte *tzstring); |
| 428 | 1130 |
| 707 | 1131 /* from GNU Emacs 21, per Simon Josefsson, modified by stephen |
| 1132 The slight inefficiency is justified since negative times are weird. */ | |
| 1133 Lisp_Object | |
| 771 | 1134 make_time (time_t tiempo) |
| 707 | 1135 { |
| 771 | 1136 return list2 (make_int (tiempo < 0 ? tiempo / 0x10000 : tiempo >> 16), |
| 1137 make_int (tiempo & 0xFFFF)); | |
| 707 | 1138 } |
| 1139 | |
| 428 | 1140 DEFUN ("encode-time", Fencode_time, 6, MANY, 0, /* |
|
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Aidan Kehoe <kehoea@parhasard.net>
parents:
4470
diff
changeset
|
1141 Convert SECOND, MINUTE, HOUR, DAY, MONTH, YEAR and ZONE to internal time. |
| 428 | 1142 This is the reverse operation of `decode-time', which see. |
| 1143 ZONE defaults to the current time zone rule. This can | |
| 1144 be a string (as from `set-time-zone-rule'), or it can be a list | |
| 1145 \(as from `current-time-zone') or an integer (as from `decode-time') | |
| 1146 applied without consideration for daylight savings time. | |
| 1147 | |
| 1148 You can pass more than 7 arguments; then the first six arguments | |
| 1149 are used as SECOND through YEAR, and the *last* argument is used as ZONE. | |
| 1150 The intervening arguments are ignored. | |
| 1151 This feature lets (apply 'encode-time (decode-time ...)) work. | |
| 1152 | |
| 1153 Out-of-range values for SEC, MINUTE, HOUR, DAY, or MONTH are allowed; | |
| 1154 for example, a DAY of 0 means the day preceding the given month. | |
| 1155 Year numbers less than 100 are treated just like other year numbers. | |
| 1156 If you want them to stand for years in this century, you must do that yourself. | |
|
4693
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Add argument information to remaining MANY or UNEVALLED C subrs.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4470
diff
changeset
|
1157 |
|
80cd90837ac5
Add argument information to remaining MANY or UNEVALLED C subrs.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4470
diff
changeset
|
1158 arguments: (SECOND MINUTE HOUR DAY MONTH YEAR &optional ZONE &rest REST) |
| 428 | 1159 */ |
| 1160 (int nargs, Lisp_Object *args)) | |
| 1161 { | |
| 1162 time_t the_time; | |
| 1163 struct tm tm; | |
| 1164 Lisp_Object zone = (nargs > 6) ? args[nargs - 1] : Qnil; | |
| 1165 | |
| 1166 CHECK_INT (*args); tm.tm_sec = XINT (*args++); /* second */ | |
| 1167 CHECK_INT (*args); tm.tm_min = XINT (*args++); /* minute */ | |
| 1168 CHECK_INT (*args); tm.tm_hour = XINT (*args++); /* hour */ | |
| 1169 CHECK_INT (*args); tm.tm_mday = XINT (*args++); /* day */ | |
| 1170 CHECK_INT (*args); tm.tm_mon = XINT (*args++) - 1; /* month */ | |
| 1171 CHECK_INT (*args); tm.tm_year = XINT (*args++) - 1900;/* year */ | |
| 1172 | |
| 1173 tm.tm_isdst = -1; | |
| 1174 | |
| 1175 if (CONSP (zone)) | |
| 1176 zone = XCAR (zone); | |
| 1177 if (NILP (zone)) | |
| 1178 the_time = mktime (&tm); | |
| 1179 else | |
| 1180 { | |
| 771 | 1181 /* #### This business of modifying environ is horrendous! |
| 1182 Why don't we just putenv()? Why don't we implement our own | |
| 1183 funs that don't require this futzing? */ | |
| 1184 Extbyte tzbuf[100]; | |
| 1185 Extbyte *tzstring; | |
| 1186 Extbyte **oldenv = environ, **newenv; | |
| 428 | 1187 |
| 1188 if (STRINGP (zone)) | |
| 771 | 1189 LISP_STRING_TO_EXTERNAL (zone, tzstring, Qnative); |
| 428 | 1190 else if (INTP (zone)) |
| 1191 { | |
| 1192 int abszone = abs (XINT (zone)); | |
| 1193 sprintf (tzbuf, "XXX%s%d:%02d:%02d", "-" + (XINT (zone) < 0), | |
| 1194 abszone / (60*60), (abszone/60) % 60, abszone % 60); | |
| 1195 tzstring = tzbuf; | |
| 1196 } | |
| 1197 else | |
| 771 | 1198 invalid_argument ("Invalid time zone specification", Qunbound); |
| 428 | 1199 |
| 1200 /* Set TZ before calling mktime; merely adjusting mktime's returned | |
| 1201 value doesn't suffice, since that would mishandle leap seconds. */ | |
| 1202 set_time_zone_rule (tzstring); | |
| 1203 | |
| 1204 the_time = mktime (&tm); | |
| 1205 | |
| 1206 /* Restore TZ to previous value. */ | |
| 1207 newenv = environ; | |
| 1208 environ = oldenv; | |
| 1209 free (newenv); | |
| 1210 #ifdef LOCALTIME_CACHE | |
| 1211 tzset (); | |
| 1212 #endif | |
| 1213 } | |
| 1214 | |
| 1215 if (the_time == (time_t) -1) | |
| 563 | 1216 invalid_argument ("Specified time is not representable", Qunbound); |
| 428 | 1217 |
| 707 | 1218 return make_time (the_time); |
| 428 | 1219 } |
| 1220 | |
| 1221 DEFUN ("current-time-string", Fcurrent_time_string, 0, 1, 0, /* | |
| 1222 Return the current time, as a human-readable string. | |
| 1223 Programs can use this function to decode a time, | |
| 1224 since the number of columns in each field is fixed. | |
| 1225 The format is `Sun Sep 16 01:03:52 1973'. | |
| 1226 If an argument is given, it specifies a time to format | |
| 1227 instead of the current time. The argument should have the form: | |
| 1228 (HIGH . LOW) | |
| 1229 or the form: | |
| 1230 (HIGH LOW . IGNORED). | |
| 1231 Thus, you can use times obtained from `current-time' | |
| 1232 and from `file-attributes'. | |
| 1233 */ | |
| 1234 (specified_time)) | |
| 1235 { | |
| 1236 time_t value; | |
| 867 | 1237 Ibyte *the_ctime; |
| 647 | 1238 EMACS_INT len; /* this is what make_ext_string() accepts; #### |
| 665 | 1239 should it be an Bytecount? */ |
| 428 | 1240 |
| 1241 if (! lisp_to_time (specified_time, &value)) | |
| 1242 value = -1; | |
| 771 | 1243 the_ctime = qxe_ctime (&value); |
| 428 | 1244 |
| 442 | 1245 /* ctime is documented as always returning a "\n\0"-terminated |
| 1246 26-byte American time string, but let's be careful anyways. */ | |
| 1247 for (len = 0; the_ctime[len] != '\n' && the_ctime[len] != '\0'; len++) | |
| 1248 ; | |
| 428 | 1249 |
| 771 | 1250 return make_string (the_ctime, len); |
| 428 | 1251 } |
| 1252 | |
| 1253 #define TM_YEAR_ORIGIN 1900 | |
| 1254 | |
| 1255 /* Yield A - B, measured in seconds. */ | |
| 1256 static long | |
| 442 | 1257 difftm (const struct tm *a, const struct tm *b) |
| 428 | 1258 { |
| 1259 int ay = a->tm_year + (TM_YEAR_ORIGIN - 1); | |
| 1260 int by = b->tm_year + (TM_YEAR_ORIGIN - 1); | |
| 1261 /* Some compilers can't handle this as a single return statement. */ | |
| 1262 long days = ( | |
| 1263 /* difference in day of year */ | |
| 1264 a->tm_yday - b->tm_yday | |
| 1265 /* + intervening leap days */ | |
| 1266 + ((ay >> 2) - (by >> 2)) | |
| 1267 - (ay/100 - by/100) | |
| 1268 + ((ay/100 >> 2) - (by/100 >> 2)) | |
| 1269 /* + difference in years * 365 */ | |
| 1270 + (long)(ay-by) * 365 | |
| 1271 ); | |
| 1272 return (60*(60*(24*days + (a->tm_hour - b->tm_hour)) | |
| 1273 + (a->tm_min - b->tm_min)) | |
| 1274 + (a->tm_sec - b->tm_sec)); | |
| 1275 } | |
| 1276 | |
| 1277 DEFUN ("current-time-zone", Fcurrent_time_zone, 0, 1, 0, /* | |
| 1278 Return the offset and name for the local time zone. | |
| 1279 This returns a list of the form (OFFSET NAME). | |
| 1280 OFFSET is an integer number of seconds ahead of UTC (east of Greenwich). | |
| 1281 A negative value means west of Greenwich. | |
| 1282 NAME is a string giving the name of the time zone. | |
| 1283 If an argument is given, it specifies when the time zone offset is determined | |
| 1284 instead of using the current time. The argument should have the form: | |
| 1285 (HIGH . LOW) | |
| 1286 or the form: | |
| 1287 (HIGH LOW . IGNORED). | |
| 1288 Thus, you can use times obtained from `current-time' | |
| 1289 and from `file-attributes'. | |
| 1290 | |
| 1291 Some operating systems cannot provide all this information to Emacs; | |
| 1292 in this case, `current-time-zone' returns a list containing nil for | |
| 1293 the data it can't find. | |
| 1294 */ | |
| 1295 (specified_time)) | |
| 1296 { | |
| 1297 time_t value; | |
| 1298 struct tm *t = NULL; | |
| 1299 | |
| 1300 if (lisp_to_time (specified_time, &value) | |
| 1301 && (t = gmtime (&value)) != 0) | |
| 1302 { | |
| 1303 struct tm gmt = *t; /* Make a copy, in case localtime modifies *t. */ | |
| 1304 long offset; | |
| 771 | 1305 Extbyte *s; |
| 1306 Lisp_Object tem; | |
| 428 | 1307 |
| 1308 t = localtime (&value); | |
| 1309 offset = difftm (t, &gmt); | |
| 1310 s = 0; | |
| 1311 #ifdef HAVE_TM_ZONE | |
| 1312 if (t->tm_zone) | |
| 771 | 1313 s = (Extbyte *) t->tm_zone; |
| 428 | 1314 #else /* not HAVE_TM_ZONE */ |
| 1315 #ifdef HAVE_TZNAME | |
| 1316 if (t->tm_isdst == 0 || t->tm_isdst == 1) | |
| 1317 s = tzname[t->tm_isdst]; | |
| 1318 #endif | |
| 1319 #endif /* not HAVE_TM_ZONE */ | |
| 771 | 1320 if (s) |
| 1321 tem = build_ext_string (s, Qnative); | |
| 1322 else | |
| 428 | 1323 { |
| 867 | 1324 Ibyte buf[6]; |
| 771 | 1325 |
| 428 | 1326 /* No local time zone name is available; use "+-NNNN" instead. */ |
| 1327 int am = (offset < 0 ? -offset : offset) / 60; | |
| 771 | 1328 qxesprintf (buf, "%c%02d%02d", (offset < 0 ? '-' : '+'), am/60, |
| 1329 am%60); | |
| 1330 tem = build_intstring (buf); | |
| 428 | 1331 } |
| 771 | 1332 return list2 (make_int (offset), tem); |
| 428 | 1333 } |
| 1334 else | |
| 1335 return list2 (Qnil, Qnil); | |
| 1336 } | |
| 1337 | |
| 1338 #ifdef LOCALTIME_CACHE | |
| 1339 | |
| 1340 /* These two values are known to load tz files in buggy implementations, | |
| 1341 i.e. Solaris 1 executables running under either Solaris 1 or Solaris 2. | |
| 1342 Their values shouldn't matter in non-buggy implementations. | |
| 1343 We don't use string literals for these strings, | |
| 1344 since if a string in the environment is in readonly | |
| 1345 storage, it runs afoul of bugs in SVR4 and Solaris 2.3. | |
| 1346 See Sun bugs 1113095 and 1114114, ``Timezone routines | |
| 1347 improperly modify environment''. */ | |
| 1348 | |
| 2367 | 1349 static Ascbyte set_time_zone_rule_tz1[] = "TZ=GMT+0"; |
| 1350 static Ascbyte set_time_zone_rule_tz2[] = "TZ=GMT+1"; | |
| 428 | 1351 |
| 1352 #endif | |
| 1353 | |
| 1354 /* Set the local time zone rule to TZSTRING. | |
| 1355 This allocates memory into `environ', which it is the caller's | |
| 1356 responsibility to free. */ | |
| 1357 static void | |
| 771 | 1358 set_time_zone_rule (Extbyte *tzstring) |
| 428 | 1359 { |
| 1360 int envptrs; | |
| 771 | 1361 Extbyte **from, **to, **newenv; |
| 428 | 1362 |
| 1363 for (from = environ; *from; from++) | |
| 1364 continue; | |
| 1365 envptrs = from - environ + 2; | |
| 771 | 1366 newenv = to = (Extbyte **) xmalloc (envptrs * sizeof (Extbyte *) |
| 428 | 1367 + (tzstring ? strlen (tzstring) + 4 : 0)); |
| 1368 if (tzstring) | |
| 1369 { | |
| 771 | 1370 Extbyte *t = (Extbyte *) (to + envptrs); |
| 428 | 1371 strcpy (t, "TZ="); |
| 1372 strcat (t, tzstring); | |
| 1373 *to++ = t; | |
| 1374 } | |
| 1375 | |
| 1376 for (from = environ; *from; from++) | |
| 1377 if (strncmp (*from, "TZ=", 3) != 0) | |
| 1378 *to++ = *from; | |
| 1379 *to = 0; | |
| 1380 | |
| 1381 environ = newenv; | |
| 1382 | |
| 1383 #ifdef LOCALTIME_CACHE | |
| 1384 { | |
| 1385 /* In SunOS 4.1.3_U1 and 4.1.4, if TZ has a value like | |
| 1386 "US/Pacific" that loads a tz file, then changes to a value like | |
| 1387 "XXX0" that does not load a tz file, and then changes back to | |
| 1388 its original value, the last change is (incorrectly) ignored. | |
| 1389 Also, if TZ changes twice in succession to values that do | |
| 1390 not load a tz file, tzset can dump core (see Sun bug#1225179). | |
| 1391 The following code works around these bugs. */ | |
| 1392 | |
| 1393 if (tzstring) | |
| 1394 { | |
| 1395 /* Temporarily set TZ to a value that loads a tz file | |
| 1396 and that differs from tzstring. */ | |
| 771 | 1397 Extbyte *tz = *newenv; |
| 428 | 1398 *newenv = (strcmp (tzstring, set_time_zone_rule_tz1 + 3) == 0 |
| 1399 ? set_time_zone_rule_tz2 : set_time_zone_rule_tz1); | |
| 1400 tzset (); | |
| 1401 *newenv = tz; | |
| 1402 } | |
| 1403 else | |
| 1404 { | |
| 1405 /* The implied tzstring is unknown, so temporarily set TZ to | |
| 1406 two different values that each load a tz file. */ | |
| 1407 *to = set_time_zone_rule_tz1; | |
| 1408 to[1] = 0; | |
| 1409 tzset (); | |
| 1410 *to = set_time_zone_rule_tz2; | |
| 1411 tzset (); | |
| 1412 *to = 0; | |
| 1413 } | |
| 1414 | |
| 1415 /* Now TZ has the desired value, and tzset can be invoked safely. */ | |
| 1416 } | |
| 1417 | |
| 1418 tzset (); | |
| 1419 #endif | |
| 1420 } | |
| 1421 | |
| 1422 DEFUN ("set-time-zone-rule", Fset_time_zone_rule, 1, 1, 0, /* | |
| 1423 Set the local time zone using TZ, a string specifying a time zone rule. | |
| 1424 If TZ is nil, use implementation-defined default time zone information. | |
| 1425 */ | |
| 1426 (tz)) | |
| 1427 { | |
| 771 | 1428 Extbyte *tzstring; |
| 428 | 1429 |
| 1430 if (NILP (tz)) | |
| 1431 tzstring = 0; | |
| 1432 else | |
| 1433 { | |
| 1434 CHECK_STRING (tz); | |
| 771 | 1435 LISP_STRING_TO_EXTERNAL (tz, tzstring, Qnative); |
| 428 | 1436 } |
| 1437 | |
| 1438 set_time_zone_rule (tzstring); | |
| 1439 if (environbuf) | |
| 1726 | 1440 xfree (environbuf, Extbyte **); |
| 428 | 1441 environbuf = environ; |
| 1442 | |
| 1443 return Qnil; | |
| 1444 } | |
| 1445 | |
| 1446 | |
| 1447 void | |
| 1448 buffer_insert1 (struct buffer *buf, Lisp_Object arg) | |
| 1449 { | |
| 1450 /* This function can GC */ | |
| 1451 struct gcpro gcpro1; | |
| 1452 GCPRO1 (arg); | |
| 1453 retry: | |
| 1454 if (CHAR_OR_CHAR_INTP (arg)) | |
| 1455 { | |
| 1456 buffer_insert_emacs_char (buf, XCHAR_OR_CHAR_INT (arg)); | |
| 1457 } | |
| 1458 else if (STRINGP (arg)) | |
| 1459 { | |
| 1460 buffer_insert_lisp_string (buf, arg); | |
| 1461 } | |
| 1462 else | |
| 1463 { | |
| 1464 arg = wrong_type_argument (Qchar_or_string_p, arg); | |
| 1465 goto retry; | |
| 1466 } | |
| 1467 UNGCPRO; | |
| 1468 } | |
| 1469 | |
| 1470 | |
| 1471 /* Callers passing one argument to Finsert need not gcpro the | |
| 1472 argument "array", since the only element of the array will | |
| 1473 not be used after calling insert_emacs_char or insert_lisp_string, | |
| 1474 so we don't care if it gets trashed. */ | |
| 1475 | |
| 1476 DEFUN ("insert", Finsert, 0, MANY, 0, /* | |
|
4693
80cd90837ac5
Add argument information to remaining MANY or UNEVALLED C subrs.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4470
diff
changeset
|
1477 Insert ARGS, either strings or characters, at point. |
| 428 | 1478 Point moves forward so that it ends up after the inserted text. |
| 1479 Any other markers at the point of insertion remain before the text. | |
| 1480 If a string has non-null string-extent-data, new extents will be created. | |
|
4693
80cd90837ac5
Add argument information to remaining MANY or UNEVALLED C subrs.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4470
diff
changeset
|
1481 |
|
80cd90837ac5
Add argument information to remaining MANY or UNEVALLED C subrs.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4470
diff
changeset
|
1482 arguments: (&rest ARGS) |
| 428 | 1483 */ |
| 1484 (int nargs, Lisp_Object *args)) | |
| 1485 { | |
| 1486 /* This function can GC */ | |
| 1487 REGISTER int argnum; | |
| 1488 | |
| 1489 for (argnum = 0; argnum < nargs; argnum++) | |
| 1490 { | |
| 1491 buffer_insert1 (current_buffer, args[argnum]); | |
| 1492 } | |
| 1493 | |
| 1494 return Qnil; | |
| 1495 } | |
| 1496 | |
| 1497 DEFUN ("insert-before-markers", Finsert_before_markers, 0, MANY, 0, /* | |
| 1498 Insert strings or characters at point, relocating markers after the text. | |
| 1499 Point moves forward so that it ends up after the inserted text. | |
| 1500 Any other markers at the point of insertion also end up after the text. | |
|
4693
80cd90837ac5
Add argument information to remaining MANY or UNEVALLED C subrs.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4470
diff
changeset
|
1501 |
|
80cd90837ac5
Add argument information to remaining MANY or UNEVALLED C subrs.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4470
diff
changeset
|
1502 arguments: (&rest ARGS) |
| 428 | 1503 */ |
| 1504 (int nargs, Lisp_Object *args)) | |
| 1505 { | |
| 1506 /* This function can GC */ | |
| 1507 REGISTER int argnum; | |
| 1508 REGISTER Lisp_Object tem; | |
| 1509 | |
| 1510 for (argnum = 0; argnum < nargs; argnum++) | |
| 1511 { | |
| 1512 tem = args[argnum]; | |
| 1513 retry: | |
| 1514 if (CHAR_OR_CHAR_INTP (tem)) | |
| 1515 { | |
| 1516 buffer_insert_emacs_char_1 (current_buffer, -1, | |
| 1517 XCHAR_OR_CHAR_INT (tem), | |
| 1518 INSDEL_BEFORE_MARKERS); | |
| 1519 } | |
| 1520 else if (STRINGP (tem)) | |
| 1521 { | |
| 1522 buffer_insert_lisp_string_1 (current_buffer, -1, tem, | |
| 1523 INSDEL_BEFORE_MARKERS); | |
| 1524 } | |
| 1525 else | |
| 1526 { | |
| 1527 tem = wrong_type_argument (Qchar_or_string_p, tem); | |
| 1528 goto retry; | |
| 1529 } | |
| 1530 } | |
| 1531 return Qnil; | |
| 1532 } | |
| 1533 | |
| 1534 DEFUN ("insert-string", Finsert_string, 1, 2, 0, /* | |
| 1535 Insert STRING into BUFFER at BUFFER's point. | |
| 1536 Point moves forward so that it ends up after the inserted text. | |
| 1537 Any other markers at the point of insertion remain before the text. | |
| 1538 If a string has non-null string-extent-data, new extents will be created. | |
| 1539 BUFFER defaults to the current buffer. | |
| 1540 */ | |
| 1541 (string, buffer)) | |
| 1542 { | |
| 1543 struct buffer *b = decode_buffer (buffer, 1); | |
| 1544 CHECK_STRING (string); | |
| 1545 buffer_insert_lisp_string (b, string); | |
| 1546 return Qnil; | |
| 1547 } | |
| 1548 | |
| 1549 /* Third argument in FSF is INHERIT: | |
| 1550 | |
| 1551 "The optional third arg INHERIT, if non-nil, says to inherit text properties | |
| 1552 from adjoining text, if those properties are sticky." | |
| 1553 | |
| 1554 Jamie thinks this is bogus. */ | |
| 1555 | |
| 1556 | |
| 1557 DEFUN ("insert-char", Finsert_char, 1, 4, 0, /* | |
| 444 | 1558 Insert COUNT copies of CHARACTER into BUFFER. |
| 428 | 1559 Point and all markers are affected as in the function `insert'. |
| 1560 COUNT defaults to 1 if omitted. | |
| 1561 The optional third arg IGNORED is INHERIT under FSF Emacs. | |
| 1562 This is highly bogus, however, and XEmacs always behaves as if | |
| 1563 `t' were passed to INHERIT. | |
| 1564 The optional fourth arg BUFFER specifies the buffer to insert the | |
| 1565 text into. If BUFFER is nil, the current buffer is assumed. | |
| 1566 */ | |
| 2286 | 1567 (character, count, UNUSED (ignored), buffer)) |
| 428 | 1568 { |
| 1569 /* This function can GC */ | |
| 867 | 1570 REGISTER Ibyte *string; |
| 814 | 1571 REGISTER Bytecount slen; |
| 1572 REGISTER Bytecount i, j; | |
| 428 | 1573 REGISTER Bytecount n; |
| 1574 REGISTER Bytecount charlen; | |
| 867 | 1575 Ibyte str[MAX_ICHAR_LEN]; |
| 428 | 1576 struct buffer *b = decode_buffer (buffer, 1); |
| 1577 int cou; | |
| 1578 | |
| 444 | 1579 CHECK_CHAR_COERCE_INT (character); |
| 428 | 1580 if (NILP (count)) |
| 1581 cou = 1; | |
| 1582 else | |
| 1583 { | |
| 1584 CHECK_INT (count); | |
| 1585 cou = XINT (count); | |
| 1586 } | |
| 1587 | |
| 867 | 1588 charlen = set_itext_ichar (str, XCHAR (character)); |
| 428 | 1589 n = cou * charlen; |
| 1590 if (n <= 0) | |
| 1591 return Qnil; | |
| 814 | 1592 slen = min (n, (Bytecount) 768); |
| 2367 | 1593 string = alloca_ibytes (slen); |
| 428 | 1594 /* Write as many copies of the character into the temp string as will fit. */ |
| 1595 for (i = 0; i + charlen <= slen; i += charlen) | |
| 1596 for (j = 0; j < charlen; j++) | |
| 1597 string[i + j] = str[j]; | |
| 1598 slen = i; | |
| 1599 while (n >= slen) | |
| 1600 { | |
| 1601 buffer_insert_raw_string (b, string, slen); | |
| 1602 n -= slen; | |
| 1603 } | |
| 1604 if (n > 0) | |
| 1605 #if 0 /* FSFmacs bogosity */ | |
| 1606 { | |
| 1607 if (!NILP (inherit)) | |
| 1608 insert_and_inherit (string, n); | |
| 1609 else | |
| 1610 insert (string, n); | |
| 1611 } | |
| 1612 #else | |
| 1613 buffer_insert_raw_string (b, string, n); | |
| 1614 #endif | |
| 1615 | |
| 1616 return Qnil; | |
| 1617 } | |
| 1618 | |
| 1619 | |
| 1620 /* Making strings from buffer contents. */ | |
| 1621 | |
| 1622 DEFUN ("buffer-substring", Fbuffer_substring, 0, 3, 0, /* | |
| 1623 Return the contents of part of BUFFER as a string. | |
| 1624 The two arguments START and END are character positions; | |
| 1625 they can be in either order. If omitted, they default to the beginning | |
| 1626 and end of BUFFER, respectively. | |
| 1627 If there are duplicable extents in the region, the string remembers | |
| 1628 them in its extent data. | |
| 1629 If BUFFER is nil, the current buffer is assumed. | |
| 1630 */ | |
| 1631 (start, end, buffer)) | |
| 1632 { | |
| 1633 /* This function can GC */ | |
| 665 | 1634 Charbpos begv, zv; |
| 428 | 1635 struct buffer *b = decode_buffer (buffer, 1); |
| 1636 | |
| 1637 get_buffer_range_char (b, start, end, &begv, &zv, GB_ALLOW_NIL); | |
| 1638 return make_string_from_buffer (b, begv, zv - begv); | |
| 1639 } | |
| 1640 | |
| 1641 /* It might make more sense to name this | |
| 1642 `buffer-substring-no-extents', but this name is FSFmacs-compatible, | |
| 1643 and what the function does is probably good enough for what the | |
| 1644 user-code will typically want to use it for. */ | |
| 1645 DEFUN ("buffer-substring-no-properties", Fbuffer_substring_no_properties, 0, 3, 0, /* | |
| 444 | 1646 Return the text from START to END as a string, without copying the extents. |
| 428 | 1647 */ |
| 1648 (start, end, buffer)) | |
| 1649 { | |
| 1650 /* This function can GC */ | |
| 665 | 1651 Charbpos begv, zv; |
| 428 | 1652 struct buffer *b = decode_buffer (buffer, 1); |
| 1653 | |
| 1654 get_buffer_range_char (b, start, end, &begv, &zv, GB_ALLOW_NIL); | |
| 1655 return make_string_from_buffer_no_extents (b, begv, zv - begv); | |
| 1656 } | |
| 1657 | |
| 1658 DEFUN ("insert-buffer-substring", Finsert_buffer_substring, 1, 3, 0, /* | |
| 1659 Insert before point a substring of the contents of buffer BUFFER. | |
| 1660 BUFFER may be a buffer or a buffer name. | |
| 1661 Arguments START and END are character numbers specifying the substring. | |
| 1662 They default to the beginning and the end of BUFFER. | |
| 1663 */ | |
| 1664 (buffer, start, end)) | |
| 1665 { | |
| 1666 /* This function can GC */ | |
| 665 | 1667 Charbpos b, e; |
| 428 | 1668 struct buffer *bp; |
| 1669 | |
| 1670 bp = XBUFFER (get_buffer (buffer, 1)); | |
| 1671 get_buffer_range_char (bp, start, end, &b, &e, GB_ALLOW_NIL); | |
| 1672 | |
| 1673 if (b < e) | |
| 1674 buffer_insert_from_buffer (current_buffer, bp, b, e - b); | |
| 1675 | |
| 1676 return Qnil; | |
| 1677 } | |
| 1678 | |
| 1679 DEFUN ("compare-buffer-substrings", Fcompare_buffer_substrings, 6, 6, 0, /* | |
| 1680 Compare two substrings of two buffers; return result as number. | |
| 1681 the value is -N if first string is less after N-1 chars, | |
| 1682 +N if first string is greater after N-1 chars, or 0 if strings match. | |
| 1683 Each substring is represented as three arguments: BUFFER, START and END. | |
| 1684 That makes six args in all, three for each substring. | |
| 1685 | |
| 1686 The value of `case-fold-search' in the current buffer | |
| 1687 determines whether case is significant or ignored. | |
| 1688 */ | |
| 1689 (buffer1, start1, end1, buffer2, start2, end2)) | |
| 1690 { | |
| 665 | 1691 Charbpos begp1, endp1, begp2, endp2; |
| 428 | 1692 REGISTER Charcount len1, len2, length, i; |
| 1693 struct buffer *bp1, *bp2; | |
| 1694 Lisp_Object trt = ((!NILP (current_buffer->case_fold_search)) ? | |
| 446 | 1695 XCASE_TABLE_CANON (current_buffer->case_table) : Qnil); |
| 428 | 1696 |
| 1697 /* Find the first buffer and its substring. */ | |
| 1698 | |
| 1699 bp1 = decode_buffer (buffer1, 1); | |
| 1700 get_buffer_range_char (bp1, start1, end1, &begp1, &endp1, GB_ALLOW_NIL); | |
| 1701 | |
| 1702 /* Likewise for second substring. */ | |
| 1703 | |
| 1704 bp2 = decode_buffer (buffer2, 1); | |
| 1705 get_buffer_range_char (bp2, start2, end2, &begp2, &endp2, GB_ALLOW_NIL); | |
| 1706 | |
| 1707 len1 = endp1 - begp1; | |
| 1708 len2 = endp2 - begp2; | |
| 1709 length = len1; | |
| 1710 if (len2 < length) | |
| 1711 length = len2; | |
| 1712 | |
| 1713 for (i = 0; i < length; i++) | |
| 1714 { | |
| 867 | 1715 Ichar c1 = BUF_FETCH_CHAR (bp1, begp1 + i); |
| 1716 Ichar c2 = BUF_FETCH_CHAR (bp2, begp2 + i); | |
| 428 | 1717 if (!NILP (trt)) |
| 1718 { | |
| 1719 c1 = TRT_TABLE_OF (trt, c1); | |
| 1720 c2 = TRT_TABLE_OF (trt, c2); | |
| 1721 } | |
| 1722 if (c1 < c2) | |
| 1723 return make_int (- 1 - i); | |
| 1724 if (c1 > c2) | |
| 1725 return make_int (i + 1); | |
| 1726 } | |
| 1727 | |
| 1728 /* The strings match as far as they go. | |
| 1729 If one is shorter, that one is less. */ | |
| 1730 if (length < len1) | |
| 1731 return make_int (length + 1); | |
| 1732 else if (length < len2) | |
| 1733 return make_int (- length - 1); | |
| 1734 | |
| 1735 /* Same length too => they are equal. */ | |
| 1736 return Qzero; | |
| 1737 } | |
| 1738 | |
| 1739 | |
| 1740 static Lisp_Object | |
| 1741 subst_char_in_region_unwind (Lisp_Object arg) | |
| 1742 { | |
| 1743 XBUFFER (XCAR (arg))->undo_list = XCDR (arg); | |
| 1744 return Qnil; | |
| 1745 } | |
| 1746 | |
| 1747 static Lisp_Object | |
| 1748 subst_char_in_region_unwind_1 (Lisp_Object arg) | |
| 1749 { | |
| 1750 XBUFFER (XCAR (arg))->filename = XCDR (arg); | |
| 1751 return Qnil; | |
| 1752 } | |
| 1753 | |
| 1754 DEFUN ("subst-char-in-region", Fsubst_char_in_region, 4, 5, 0, /* | |
| 1755 From START to END, replace FROMCHAR with TOCHAR each time it occurs. | |
| 1756 If optional arg NOUNDO is non-nil, don't record this change for undo | |
| 1757 and don't mark the buffer as really changed. | |
| 1758 */ | |
| 1759 (start, end, fromchar, tochar, noundo)) | |
| 1760 { | |
| 1761 /* This function can GC */ | |
| 665 | 1762 Charbpos pos, stop; |
| 867 | 1763 Ichar fromc, toc; |
| 428 | 1764 int mc_count; |
| 1765 struct buffer *buf = current_buffer; | |
| 1766 int count = specpdl_depth (); | |
| 1767 | |
| 1768 get_buffer_range_char (buf, start, end, &pos, &stop, 0); | |
| 1769 CHECK_CHAR_COERCE_INT (fromchar); | |
| 1770 CHECK_CHAR_COERCE_INT (tochar); | |
| 1771 | |
| 1772 fromc = XCHAR (fromchar); | |
| 1773 toc = XCHAR (tochar); | |
| 1774 | |
| 1775 /* If we don't want undo, turn off putting stuff on the list. | |
| 1776 That's faster than getting rid of things, | |
| 1777 and it prevents even the entry for a first change. | |
| 1778 Also inhibit locking the file. */ | |
| 1779 if (!NILP (noundo)) | |
| 1780 { | |
| 1781 record_unwind_protect (subst_char_in_region_unwind, | |
| 1782 Fcons (Fcurrent_buffer (), buf->undo_list)); | |
| 1783 buf->undo_list = Qt; | |
| 1784 /* Don't do file-locking. */ | |
| 1785 record_unwind_protect (subst_char_in_region_unwind_1, | |
| 1786 Fcons (Fcurrent_buffer (), buf->filename)); | |
| 1787 buf->filename = Qnil; | |
| 1788 } | |
| 1789 | |
| 1790 mc_count = begin_multiple_change (buf, pos, stop); | |
| 1791 while (pos < stop) | |
| 1792 { | |
| 1793 if (BUF_FETCH_CHAR (buf, pos) == fromc) | |
| 1794 { | |
| 1795 /* There used to be some code here that set the buffer to | |
| 1796 unmodified if NOUNDO was specified and there was only | |
| 1797 one change to the buffer since it was last saved. | |
| 1798 This is a crock of shit, so I'm not duplicating this | |
| 1799 behavior. I think this was left over from when | |
| 1800 prepare_to_modify_buffer() actually bumped MODIFF, | |
| 1801 so that code was supposed to undo this change. --ben */ | |
| 1802 buffer_replace_char (buf, pos, toc, !NILP (noundo), 0); | |
| 1803 | |
| 1804 /* If noundo is not nil then we don't mark the buffer as | |
| 1805 modified. In reality that needs to happen externally | |
| 1806 only. Internally redisplay needs to know that the actual | |
| 1807 contents it should be displaying have changed. */ | |
| 1808 if (!NILP (noundo)) | |
| 1809 Fset_buffer_modified_p (Fbuffer_modified_p (Qnil), Qnil); | |
| 1810 } | |
| 1811 pos++; | |
| 1812 } | |
| 1813 end_multiple_change (buf, mc_count); | |
| 1814 | |
| 771 | 1815 unbind_to (count); |
| 428 | 1816 return Qnil; |
| 1817 } | |
| 1818 | |
| 1819 /* #### Shouldn't this also accept a BUFFER argument, in the good old | |
| 1820 XEmacs tradition? */ | |
| 1821 DEFUN ("translate-region", Ftranslate_region, 3, 3, 0, /* | |
| 1822 Translate characters from START to END according to TABLE. | |
| 1823 | |
| 1824 If TABLE is a string, the Nth character in it is the mapping for the | |
| 1825 character with code N. | |
| 1826 | |
| 1827 If TABLE is a vector, its Nth element is the mapping for character | |
| 1828 with code N. The values of elements may be characters, strings, or | |
| 1829 nil (nil meaning don't replace.) | |
| 1830 | |
| 1831 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
|
1832 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
|
1833 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
|
1834 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
|
1835 `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
|
1836 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
|
1837 not all of them, the most generally useful table type here is `generic'. |
| 428 | 1838 |
| 1839 Returns the number of substitutions performed. | |
| 1840 */ | |
| 1841 (start, end, table)) | |
| 1842 { | |
| 1843 /* This function can GC */ | |
| 665 | 1844 Charbpos pos, stop; /* Limits of the region. */ |
| 428 | 1845 int cnt = 0; /* Number of changes made. */ |
| 1846 int mc_count; | |
| 1847 struct buffer *buf = current_buffer; | |
| 867 | 1848 Ichar oc; |
| 428 | 1849 |
| 1850 get_buffer_range_char (buf, start, end, &pos, &stop, 0); | |
| 1851 mc_count = begin_multiple_change (buf, pos, stop); | |
| 1852 if (STRINGP (table)) | |
| 1853 { | |
| 826 | 1854 Charcount size = string_char_length (table); |
| 428 | 1855 #ifdef MULE |
| 867 | 1856 /* Under Mule, string_ichar(n) is O(n), so for large tables or |
| 1857 large regions it makes sense to create an array of Ichars. */ | |
| 428 | 1858 if (size * (stop - pos) > 65536) |
| 1859 { | |
| 867 | 1860 Ichar *etable = alloca_array (Ichar, size); |
| 1861 convert_ibyte_string_into_ichar_string | |
| 793 | 1862 (XSTRING_DATA (table), XSTRING_LENGTH (table), etable); |
| 428 | 1863 for (; pos < stop && (oc = BUF_FETCH_CHAR (buf, pos), 1); pos++) |
| 1864 { | |
| 1865 if (oc < size) | |
| 1866 { | |
| 867 | 1867 Ichar nc = etable[oc]; |
| 428 | 1868 if (nc != oc) |
| 1869 { | |
| 1870 buffer_replace_char (buf, pos, nc, 0, 0); | |
| 1871 ++cnt; | |
| 1872 } | |
| 1873 } | |
| 1874 } | |
| 1875 } | |
| 1876 else | |
| 1877 #endif /* MULE */ | |
| 1878 { | |
| 1879 for (; pos < stop && (oc = BUF_FETCH_CHAR (buf, pos), 1); pos++) | |
| 1880 { | |
| 1881 if (oc < size) | |
| 1882 { | |
| 867 | 1883 Ichar nc = string_ichar (table, oc); |
| 428 | 1884 if (nc != oc) |
| 1885 { | |
| 1886 buffer_replace_char (buf, pos, nc, 0, 0); | |
| 1887 ++cnt; | |
| 1888 } | |
| 1889 } | |
| 1890 } | |
| 1891 } | |
| 1892 } | |
| 1893 else if (VECTORP (table)) | |
| 1894 { | |
| 1895 Charcount size = XVECTOR_LENGTH (table); | |
| 1896 Lisp_Object *vtable = XVECTOR_DATA (table); | |
| 1897 | |
| 1898 for (; pos < stop && (oc = BUF_FETCH_CHAR (buf, pos), 1); pos++) | |
| 1899 { | |
| 1900 if (oc < size) | |
| 1901 { | |
| 1902 Lisp_Object replacement = vtable[oc]; | |
| 1903 retry: | |
| 1904 if (CHAR_OR_CHAR_INTP (replacement)) | |
| 1905 { | |
| 867 | 1906 Ichar nc = XCHAR_OR_CHAR_INT (replacement); |
| 428 | 1907 if (nc != oc) |
| 1908 { | |
| 1909 buffer_replace_char (buf, pos, nc, 0, 0); | |
| 1910 ++cnt; | |
| 1911 } | |
| 1912 } | |
| 1913 else if (STRINGP (replacement)) | |
| 1914 { | |
| 826 | 1915 Charcount incr = string_char_length (replacement) - 1; |
| 428 | 1916 buffer_delete_range (buf, pos, pos + 1, 0); |
| 1917 buffer_insert_lisp_string_1 (buf, pos, replacement, 0); | |
| 1918 pos += incr, stop += incr; | |
| 1919 ++cnt; | |
| 1920 } | |
| 1921 else if (!NILP (replacement)) | |
| 1922 { | |
| 1923 replacement = wrong_type_argument (Qchar_or_string_p, replacement); | |
| 1924 goto retry; | |
| 1925 } | |
| 1926 } | |
| 1927 } | |
| 1928 } | |
| 1929 else if (CHAR_TABLEP (table) | |
| 1930 && (XCHAR_TABLE_TYPE (table) == CHAR_TABLE_TYPE_GENERIC | |
| 1931 || XCHAR_TABLE_TYPE (table) == CHAR_TABLE_TYPE_CHAR)) | |
| 1932 { | |
| 1933 | |
| 1934 for (; pos < stop && (oc = BUF_FETCH_CHAR (buf, pos), 1); pos++) | |
| 1935 { | |
| 826 | 1936 Lisp_Object replacement = get_char_table (oc, table); |
| 428 | 1937 retry2: |
| 1938 if (CHAR_OR_CHAR_INTP (replacement)) | |
| 1939 { | |
| 867 | 1940 Ichar nc = XCHAR_OR_CHAR_INT (replacement); |
| 428 | 1941 if (nc != oc) |
| 1942 { | |
| 1943 buffer_replace_char (buf, pos, nc, 0, 0); | |
| 1944 ++cnt; | |
| 1945 } | |
| 1946 } | |
| 1947 else if (STRINGP (replacement)) | |
| 1948 { | |
| 826 | 1949 Charcount incr = string_char_length (replacement) - 1; |
| 428 | 1950 buffer_delete_range (buf, pos, pos + 1, 0); |
| 1951 buffer_insert_lisp_string_1 (buf, pos, replacement, 0); | |
| 1952 pos += incr, stop += incr; | |
| 1953 ++cnt; | |
| 1954 } | |
| 1955 else if (!NILP (replacement)) | |
| 1956 { | |
| 826 | 1957 replacement = wrong_type_argument (Qchar_or_string_p, |
| 1958 replacement); | |
| 428 | 1959 goto retry2; |
| 1960 } | |
| 1961 } | |
| 1962 } | |
| 1963 else | |
| 1964 dead_wrong_type_argument (Qstringp, table); | |
| 1965 end_multiple_change (buf, mc_count); | |
| 1966 | |
| 1967 return make_int (cnt); | |
| 1968 } | |
| 1969 | |
| 1970 DEFUN ("delete-region", Fdelete_region, 2, 3, "r", /* | |
| 1971 Delete the text between point and mark. | |
| 444 | 1972 When called from a program, expects two arguments START and END |
| 1973 \(integers or markers) specifying the stretch to be deleted. | |
| 1974 If optional third arg BUFFER is nil, the current buffer is assumed. | |
| 428 | 1975 */ |
| 444 | 1976 (start, end, buffer)) |
| 428 | 1977 { |
| 1978 /* This function can GC */ | |
| 826 | 1979 Charbpos char_start, char_end; |
| 428 | 1980 struct buffer *buf = decode_buffer (buffer, 1); |
| 1981 | |
| 826 | 1982 get_buffer_range_char (buf, start, end, &char_start, &char_end, 0); |
| 1983 buffer_delete_range (buf, char_start, char_end, 0); | |
| 428 | 1984 return Qnil; |
| 1985 } | |
| 1986 | |
| 1987 void | |
| 1988 widen_buffer (struct buffer *b, int no_clip) | |
| 1989 { | |
| 1990 if (BUF_BEGV (b) != BUF_BEG (b)) | |
| 1991 { | |
| 1992 clip_changed = 1; | |
| 826 | 1993 SET_BOTH_BUF_BEGV (b, BUF_BEG (b), BYTE_BUF_BEG (b)); |
| 428 | 1994 } |
| 1995 if (BUF_ZV (b) != BUF_Z (b)) | |
| 1996 { | |
| 1997 clip_changed = 1; | |
| 826 | 1998 SET_BOTH_BUF_ZV (b, BUF_Z (b), BYTE_BUF_Z (b)); |
| 428 | 1999 } |
| 2000 if (clip_changed) | |
| 2001 { | |
| 2002 if (!no_clip) | |
| 2003 MARK_CLIP_CHANGED; | |
| 2004 /* Changing the buffer bounds invalidates any recorded current | |
| 2005 column. */ | |
| 2006 invalidate_current_column (); | |
| 2007 narrow_line_number_cache (b); | |
| 2008 } | |
| 2009 } | |
| 2010 | |
| 2011 DEFUN ("widen", Fwiden, 0, 1, "", /* | |
| 2012 Remove restrictions (narrowing) from BUFFER. | |
| 2013 This allows the buffer's full text to be seen and edited. | |
| 2014 If BUFFER is nil, the current buffer is assumed. | |
| 2015 */ | |
| 2016 (buffer)) | |
| 2017 { | |
| 2018 struct buffer *b = decode_buffer (buffer, 1); | |
| 2019 widen_buffer (b, 0); | |
| 2020 return Qnil; | |
| 2021 } | |
| 2022 | |
| 2023 DEFUN ("narrow-to-region", Fnarrow_to_region, 2, 3, "r", /* | |
| 2024 Restrict editing in BUFFER to the current region. | |
| 2025 The rest of the text becomes temporarily invisible and untouchable | |
| 2026 but is not deleted; if you save the buffer in a file, the invisible | |
| 2027 text is included in the file. \\[widen] makes all visible again. | |
| 2028 If BUFFER is nil, the current buffer is assumed. | |
| 2029 See also `save-restriction'. | |
| 2030 | |
| 2031 When calling from a program, pass two arguments; positions (integers | |
| 2032 or markers) bounding the text that should remain visible. | |
| 2033 */ | |
| 444 | 2034 (start, end, buffer)) |
| 428 | 2035 { |
| 826 | 2036 Charbpos char_start, char_end; |
| 428 | 2037 struct buffer *buf = decode_buffer (buffer, 1); |
| 826 | 2038 Bytebpos byte_start, byte_end; |
| 428 | 2039 |
| 826 | 2040 get_buffer_range_char (buf, start, end, &char_start, &char_end, |
| 444 | 2041 GB_ALLOW_PAST_ACCESSIBLE); |
| 826 | 2042 byte_start = charbpos_to_bytebpos (buf, char_start); |
| 2043 byte_end = charbpos_to_bytebpos (buf, char_end); | |
| 428 | 2044 |
| 826 | 2045 SET_BOTH_BUF_BEGV (buf, char_start, byte_start); |
| 2046 SET_BOTH_BUF_ZV (buf, char_end, byte_end); | |
| 2047 if (BUF_PT (buf) < char_start) | |
| 2048 BUF_SET_PT (buf, char_start); | |
| 2049 if (BUF_PT (buf) > char_end) | |
| 2050 BUF_SET_PT (buf, char_end); | |
| 428 | 2051 MARK_CLIP_CHANGED; |
| 2052 /* Changing the buffer bounds invalidates any recorded current column. */ | |
| 2053 invalidate_current_column (); | |
| 2054 narrow_line_number_cache (buf); | |
| 2055 return Qnil; | |
| 2056 } | |
| 2057 | |
| 2058 Lisp_Object | |
| 844 | 2059 save_restriction_save (struct buffer *buf) |
| 428 | 2060 { |
| 844 | 2061 Lisp_Object bottom = noseeum_make_marker (); |
| 2062 Lisp_Object top = noseeum_make_marker (); | |
| 2063 | |
| 2064 /* Formerly, this function remembered the amount of text on either side | |
| 2065 of the restricted area, in a halfway attempt to account for insertion -- | |
| 2066 it handles insertion inside the old restricted area, but not outside. | |
| 2067 The comment read: | |
| 2068 | |
| 2069 [[ Note: I tried using markers here, but it does not win | |
| 428 | 2070 because insertion at the end of the saved region |
| 844 | 2071 does not advance mh and is considered "outside" the saved region. ]] |
| 2072 | |
| 2073 But that was clearly before the advent of marker-insertion-type. --ben */ | |
| 428 | 2074 |
| 844 | 2075 Fset_marker (bottom, make_int (BUF_BEGV (buf)), wrap_buffer (buf)); |
| 2076 Fset_marker (top, make_int (BUF_ZV (buf)), wrap_buffer (buf)); | |
| 2077 Fset_marker_insertion_type (top, Qt); | |
| 2078 | |
| 2079 return noseeum_cons (wrap_buffer (buf), noseeum_cons (bottom, top)); | |
| 428 | 2080 } |
| 2081 | |
| 2082 Lisp_Object | |
| 2083 save_restriction_restore (Lisp_Object data) | |
| 2084 { | |
| 2085 struct buffer *buf; | |
| 844 | 2086 Lisp_Object markers = XCDR (data); |
| 428 | 2087 int local_clip_changed = 0; |
| 2088 | |
| 2089 buf = XBUFFER (XCAR (data)); | |
| 844 | 2090 /* someone could have killed the buffer in the meantime ... */ |
| 2091 if (BUFFER_LIVE_P (buf)) | |
| 428 | 2092 { |
| 844 | 2093 Charbpos start = marker_position (XCAR (markers)); |
| 2094 Charbpos end = marker_position (XCDR (markers)); | |
| 2095 Bytebpos byte_start = charbpos_to_bytebpos (buf, start); | |
| 2096 Bytebpos byte_end = charbpos_to_bytebpos (buf, end); | |
| 428 | 2097 |
| 844 | 2098 if (BUF_BEGV (buf) != start) |
| 2099 { | |
| 2100 local_clip_changed = 1; | |
| 2101 SET_BOTH_BUF_BEGV (buf, start, byte_start); | |
| 2102 narrow_line_number_cache (buf); | |
| 2103 } | |
| 2104 if (BUF_ZV (buf) != end) | |
| 2105 { | |
| 2106 local_clip_changed = 1; | |
| 2107 SET_BOTH_BUF_ZV (buf, end, byte_end); | |
| 2108 } | |
| 428 | 2109 |
| 844 | 2110 if (local_clip_changed) |
| 2111 MARK_CLIP_CHANGED; | |
| 2112 | |
| 2113 /* If point is outside the new visible range, move it inside. */ | |
| 2114 BUF_SET_PT (buf, charbpos_clip_to_bounds (BUF_BEGV (buf), BUF_PT (buf), | |
| 2115 BUF_ZV (buf))); | |
| 428 | 2116 } |
| 2117 | |
| 844 | 2118 /* Free all the junk we allocated, so that a `save-restriction' comes |
| 2119 for free in terms of GC junk. */ | |
| 1204 | 2120 free_marker (XCAR (markers)); |
| 2121 free_marker (XCDR (markers)); | |
| 853 | 2122 free_cons (markers); |
| 2123 free_cons (data); | |
| 428 | 2124 |
| 2125 return Qnil; | |
| 2126 } | |
| 2127 | |
| 2128 DEFUN ("save-restriction", Fsave_restriction, 0, UNEVALLED, 0, /* | |
| 2129 Execute BODY, saving and restoring current buffer's restrictions. | |
| 2130 The buffer's restrictions make parts of the beginning and end invisible. | |
| 2131 \(They are set up with `narrow-to-region' and eliminated with `widen'.) | |
| 2132 This special form, `save-restriction', saves the current buffer's restrictions | |
| 2133 when it is entered, and restores them when it is exited. | |
| 2134 So any `narrow-to-region' within BODY lasts only until the end of the form. | |
| 2135 The old restrictions settings are restored | |
| 2136 even in case of abnormal exit (throw or error). | |
| 2137 | |
| 2138 The value returned is the value of the last form in BODY. | |
| 2139 | |
| 844 | 2140 As of XEmacs 22.0, `save-restriction' correctly handles all modifications |
| 2141 made within BODY. (Formerly, it got confused if, within the BODY, you | |
| 2142 widened and then made changes outside the old restricted area.) | |
| 428 | 2143 |
| 2144 Note: if you are using both `save-excursion' and `save-restriction', | |
| 2145 use `save-excursion' outermost: | |
| 2146 (save-excursion (save-restriction ...)) | |
|
4693
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diff
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|
2147 |
|
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diff
changeset
|
2148 arguments: (&rest BODY) |
| 428 | 2149 */ |
| 2150 (body)) | |
| 2151 { | |
| 2152 /* This function can GC */ | |
| 844 | 2153 int speccount = |
| 2154 record_unwind_protect (save_restriction_restore, | |
| 2155 save_restriction_save (current_buffer)); | |
| 428 | 2156 |
| 771 | 2157 return unbind_to_1 (speccount, Fprogn (body)); |
| 428 | 2158 } |
| 2159 | |
| 2160 | |
| 2161 DEFUN ("format", Fformat, 1, MANY, 0, /* | |
| 2162 Format a string out of a control-string and arguments. | |
| 2163 The first argument is a control string. | |
| 2164 The other arguments are substituted into it to make the result, a string. | |
| 2165 It may contain %-sequences meaning to substitute the next argument. | |
| 2166 %s means print all objects as-is, using `princ'. | |
| 2167 %S means print all objects as s-expressions, using `prin1'. | |
| 2168 %d or %i means print as an integer in decimal (%o octal, %x lowercase hex, | |
|
4329
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4266
diff
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|
2169 %X uppercase hex, %b binary). |
| 428 | 2170 %c means print as a single character. |
| 2171 %f means print as a floating-point number in fixed notation (e.g. 785.200). | |
| 2172 %e or %E means print as a floating-point number in scientific notation | |
| 2173 (e.g. 7.85200e+03). | |
| 2174 %g or %G means print as a floating-point number in "pretty format"; | |
| 2175 depending on the number, either %f or %e/%E format will be used, and | |
| 2176 trailing zeroes are removed from the fractional part. | |
| 2177 The argument used for all but %s and %S must be a number. It will be | |
| 2178 converted to an integer or a floating-point number as necessary. | |
| 2179 | |
| 2180 %$ means reposition to read a specific numbered argument; for example, | |
| 2181 %3$s would apply the `%s' to the third argument after the control string, | |
| 2182 and the next format directive would use the fourth argument, the | |
| 2183 following one the fifth argument, etc. (There must be a positive integer | |
| 2184 between the % and the $). | |
| 2185 Zero or more of the flag characters `-', `+', ` ', `0', and `#' may be | |
| 2186 specified between the optional repositioning spec and the conversion | |
| 2187 character; see below. | |
| 2188 An optional minimum field width may be specified after any flag characters | |
| 2189 and before the conversion character; it specifies the minimum number of | |
| 2190 characters that the converted argument will take up. Padding will be | |
| 2191 added on the left (or on the right, if the `-' flag is specified), as | |
| 2192 necessary. Padding is done with spaces, or with zeroes if the `0' flag | |
| 2193 is specified. | |
| 2194 If the field width is specified as `*', the field width is assumed to have | |
| 2195 been specified as an argument. Any repositioning specification that | |
| 2196 would normally specify the argument to be converted will now specify | |
| 2197 where to find this field width argument, not where to find the argument | |
| 2198 to be converted. If there is no repositioning specification, the normal | |
| 2199 next argument is used. The argument to be converted will be the next | |
| 2200 argument after the field width argument unless the precision is also | |
| 2201 specified as `*' (see below). | |
| 2202 | |
| 2203 An optional period character and precision may be specified after any | |
| 2204 minimum field width. It specifies the minimum number of digits to | |
| 2205 appear in %d, %i, %o, %x, and %X conversions (the number is padded | |
| 2206 on the left with zeroes as necessary); the number of digits printed | |
| 2207 after the decimal point for %f, %e, and %E conversions; the number | |
| 2208 of significant digits printed in %g and %G conversions; and the | |
| 2209 maximum number of non-padding characters printed in %s and %S | |
| 2210 conversions. The default precision for floating-point conversions | |
| 2211 is six. | |
| 2212 If the precision is specified as `*', the precision is assumed to have been | |
| 2213 specified as an argument. The argument used will be the next argument | |
| 2214 after the field width argument, if any. If the field width was not | |
| 2215 specified as an argument, any repositioning specification that would | |
| 2216 normally specify the argument to be converted will now specify where to | |
| 2217 find the precision argument. If there is no repositioning specification, | |
| 2218 the normal next argument is used. | |
| 2219 | |
| 2220 The ` ' and `+' flags mean prefix non-negative numbers with a space or | |
| 2221 plus sign, respectively. | |
| 2222 The `#' flag means print numbers in an alternate, more verbose format: | |
| 2223 octal numbers begin with zero; hex numbers begin with a 0x or 0X; | |
| 2224 a decimal point is printed in %f, %e, and %E conversions even if no | |
| 2225 numbers are printed after it; and trailing zeroes are not omitted in | |
| 2226 %g and %G conversions. | |
| 2227 | |
| 2228 Use %% to put a single % into the output. | |
|
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Aidan Kehoe <kehoea@parhasard.net>
parents:
4470
diff
changeset
|
2229 |
|
80cd90837ac5
Add argument information to remaining MANY or UNEVALLED C subrs.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4470
diff
changeset
|
2230 arguments: (CONTROL-STRING &rest ARGS) |
| 428 | 2231 */ |
| 2232 (int nargs, Lisp_Object *args)) | |
| 2233 { | |
| 2234 /* It should not be necessary to GCPRO ARGS, because | |
| 2235 the caller in the interpreter should take care of that. */ | |
| 2236 | |
| 2237 CHECK_STRING (args[0]); | |
| 771 | 2238 return emacs_vsprintf_string_lisp (0, args[0], nargs - 1, args + 1); |
| 428 | 2239 } |
| 2240 | |
| 2241 | |
| 2242 DEFUN ("char-equal", Fchar_equal, 2, 3, 0, /* | |
| 2243 Return t if two characters match, optionally ignoring case. | |
| 2244 Both arguments must be characters (i.e. NOT integers). | |
| 2245 Case is ignored if `case-fold-search' is non-nil in BUFFER. | |
| 2246 If BUFFER is nil, the current buffer is assumed. | |
| 2247 */ | |
| 444 | 2248 (character1, character2, buffer)) |
| 428 | 2249 { |
| 867 | 2250 Ichar x1, x2; |
| 428 | 2251 struct buffer *b = decode_buffer (buffer, 1); |
| 2252 | |
| 444 | 2253 CHECK_CHAR_COERCE_INT (character1); |
| 2254 CHECK_CHAR_COERCE_INT (character2); | |
| 2255 x1 = XCHAR (character1); | |
| 2256 x2 = XCHAR (character2); | |
| 428 | 2257 |
| 2258 return (!NILP (b->case_fold_search) | |
| 2259 ? DOWNCASE (b, x1) == DOWNCASE (b, x2) | |
| 2260 : x1 == x2) | |
| 2261 ? Qt : Qnil; | |
| 2262 } | |
| 2263 | |
| 434 | 2264 DEFUN ("char=", Fchar_Equal, 2, 2, 0, /* |
| 428 | 2265 Return t if two characters match, case is significant. |
| 2266 Both arguments must be characters (i.e. NOT integers). | |
| 2267 */ | |
| 444 | 2268 (character1, character2)) |
| 428 | 2269 { |
| 444 | 2270 CHECK_CHAR_COERCE_INT (character1); |
| 2271 CHECK_CHAR_COERCE_INT (character2); | |
| 428 | 2272 |
| 444 | 2273 return EQ (character1, character2) ? Qt : Qnil; |
| 428 | 2274 } |
| 2275 | |
| 2276 #if 0 /* Undebugged FSFmacs code */ | |
| 2277 /* Transpose the markers in two regions of the current buffer, and | |
| 2278 adjust the ones between them if necessary (i.e.: if the regions | |
| 2279 differ in size). | |
| 2280 | |
| 2281 Traverses the entire marker list of the buffer to do so, adding an | |
| 2282 appropriate amount to some, subtracting from some, and leaving the | |
| 2283 rest untouched. Most of this is copied from adjust_markers in insdel.c. | |
| 2284 | |
| 2285 It's the caller's job to see that (start1 <= end1 <= start2 <= end2). */ | |
| 2286 | |
| 2287 void | |
| 665 | 2288 transpose_markers (Charbpos start1, Charbpos end1, Charbpos start2, Charbpos end2) |
| 428 | 2289 { |
| 2290 Charcount amt1, amt2, diff; | |
| 2291 Lisp_Object marker; | |
| 2292 struct buffer *buf = current_buffer; | |
| 2293 | |
| 2294 /* Update point as if it were a marker. */ | |
| 2295 if (BUF_PT (buf) < start1) | |
| 2296 ; | |
| 2297 else if (BUF_PT (buf) < end1) | |
| 2298 BUF_SET_PT (buf, BUF_PT (buf) + (end2 - end1)); | |
| 2299 else if (BUF_PT (buf) < start2) | |
| 2300 BUF_SET_PT (buf, BUF_PT (buf) + (end2 - start2) - (end1 - start1)); | |
| 2301 else if (BUF_PT (buf) < end2) | |
| 2302 BUF_SET_PT (buf, BUF_PT (buf) - (start2 - start1)); | |
| 2303 | |
| 2304 /* We used to adjust the endpoints here to account for the gap, but that | |
| 2305 isn't good enough. Even if we assume the caller has tried to move the | |
| 2306 gap out of our way, it might still be at start1 exactly, for example; | |
| 2307 and that places it `inside' the interval, for our purposes. The amount | |
| 2308 of adjustment is nontrivial if there's a `denormalized' marker whose | |
| 2309 position is between GPT and GPT + GAP_SIZE, so it's simpler to leave | |
| 2310 the dirty work to Fmarker_position, below. */ | |
| 2311 | |
| 2312 /* The difference between the region's lengths */ | |
| 2313 diff = (end2 - start2) - (end1 - start1); | |
| 2314 | |
| 2315 /* For shifting each marker in a region by the length of the other | |
| 2316 * region plus the distance between the regions. | |
| 2317 */ | |
| 2318 amt1 = (end2 - start2) + (start2 - end1); | |
| 2319 amt2 = (end1 - start1) + (start2 - end1); | |
| 2320 | |
| 2321 for (marker = BUF_MARKERS (buf); !NILP (marker); | |
| 2322 marker = XMARKER (marker)->chain) | |
| 2323 { | |
| 665 | 2324 Charbpos mpos = marker_position (marker); |
| 428 | 2325 if (mpos >= start1 && mpos < end2) |
| 2326 { | |
| 2327 if (mpos < end1) | |
| 2328 mpos += amt1; | |
| 2329 else if (mpos < start2) | |
| 2330 mpos += diff; | |
| 2331 else | |
| 2332 mpos -= amt2; | |
| 2333 set_marker_position (marker, mpos); | |
| 2334 } | |
| 2335 } | |
| 2336 } | |
| 2337 | |
| 2338 #endif /* 0 */ | |
| 2339 | |
| 2340 DEFUN ("transpose-regions", Ftranspose_regions, 4, 5, 0, /* | |
| 2341 Transpose region START1 to END1 with START2 to END2. | |
| 2342 The regions may not be overlapping, because the size of the buffer is | |
| 2343 never changed in a transposition. | |
| 2344 | |
| 444 | 2345 Optional fifth arg LEAVE-MARKERS, if non-nil, means don't transpose |
| 428 | 2346 any markers that happen to be located in the regions. (#### BUG: currently |
| 444 | 2347 this function always acts as if LEAVE-MARKERS is non-nil.) |
| 428 | 2348 |
| 2349 Transposing beyond buffer boundaries is an error. | |
| 2350 */ | |
| 2286 | 2351 (start1, end1, start2, end2, UNUSED (leave_markers))) |
| 428 | 2352 { |
| 665 | 2353 Charbpos startr1, endr1, startr2, endr2; |
| 428 | 2354 Charcount len1, len2; |
| 2355 Lisp_Object string1, string2; | |
| 2356 struct buffer *buf = current_buffer; | |
| 2357 | |
| 444 | 2358 get_buffer_range_char (buf, start1, end1, &startr1, &endr1, 0); |
| 2359 get_buffer_range_char (buf, start2, end2, &startr2, &endr2, 0); | |
| 428 | 2360 |
| 444 | 2361 len1 = endr1 - startr1; |
| 2362 len2 = endr2 - startr2; | |
| 428 | 2363 |
| 444 | 2364 if (startr2 < endr1) |
| 563 | 2365 invalid_argument ("transposed regions not properly ordered", Qunbound); |
| 444 | 2366 else if (startr1 == endr1 || startr2 == endr2) |
| 563 | 2367 invalid_argument ("transposed region may not be of length 0", Qunbound); |
| 428 | 2368 |
| 444 | 2369 string1 = make_string_from_buffer (buf, startr1, len1); |
| 2370 string2 = make_string_from_buffer (buf, startr2, len2); | |
| 2371 buffer_delete_range (buf, startr2, endr2, 0); | |
| 2372 buffer_insert_lisp_string_1 (buf, startr2, string1, 0); | |
| 2373 buffer_delete_range (buf, startr1, endr1, 0); | |
| 2374 buffer_insert_lisp_string_1 (buf, startr1, string2, 0); | |
| 428 | 2375 |
| 2376 /* In FSFmacs there is a whole bunch of really ugly code here | |
| 2377 to attempt to transpose the regions without using up any | |
| 2378 extra memory. Although the intent may be good, the result | |
| 2379 was highly bogus. */ | |
| 2380 | |
| 2381 return Qnil; | |
| 2382 } | |
| 2383 | |
| 2384 | |
| 2385 /************************************************************************/ | |
| 2386 /* initialization */ | |
| 2387 /************************************************************************/ | |
| 2388 | |
| 2389 void | |
| 2390 syms_of_editfns (void) | |
| 2391 { | |
| 563 | 2392 DEFSYMBOL (Qpoint); |
| 2393 DEFSYMBOL (Qmark); | |
| 2394 DEFSYMBOL (Qregion_beginning); | |
| 2395 DEFSYMBOL (Qregion_end); | |
| 2396 DEFSYMBOL (Qformat); | |
| 2397 DEFSYMBOL (Quser_files_and_directories); | |
| 428 | 2398 |
| 2399 DEFSUBR (Fchar_equal); | |
| 2400 DEFSUBR (Fchar_Equal); | |
| 2401 DEFSUBR (Fgoto_char); | |
| 2402 DEFSUBR (Fstring_to_char); | |
| 2403 DEFSUBR (Fchar_to_string); | |
| 2404 DEFSUBR (Fbuffer_substring); | |
| 2405 DEFSUBR (Fbuffer_substring_no_properties); | |
| 2406 | |
| 2407 DEFSUBR (Fpoint_marker); | |
| 2408 DEFSUBR (Fmark_marker); | |
| 2409 DEFSUBR (Fpoint); | |
| 2410 DEFSUBR (Fregion_beginning); | |
| 2411 DEFSUBR (Fregion_end); | |
| 2412 DEFSUBR (Fsave_excursion); | |
| 2413 DEFSUBR (Fsave_current_buffer); | |
| 2414 | |
| 2415 DEFSUBR (Fbuffer_size); | |
| 2416 DEFSUBR (Fpoint_max); | |
| 2417 DEFSUBR (Fpoint_min); | |
| 2418 DEFSUBR (Fpoint_min_marker); | |
| 2419 DEFSUBR (Fpoint_max_marker); | |
| 2420 | |
| 2421 DEFSUBR (Fbobp); | |
| 2422 DEFSUBR (Feobp); | |
| 2423 DEFSUBR (Fbolp); | |
| 2424 DEFSUBR (Feolp); | |
| 2425 DEFSUBR (Ffollowing_char); | |
| 2426 DEFSUBR (Fpreceding_char); | |
| 2427 DEFSUBR (Fchar_after); | |
| 2428 DEFSUBR (Fchar_before); | |
| 2429 DEFSUBR (Finsert); | |
| 2430 DEFSUBR (Finsert_string); | |
| 2431 DEFSUBR (Finsert_before_markers); | |
| 2432 DEFSUBR (Finsert_char); | |
| 2433 | |
| 2434 DEFSUBR (Ftemp_directory); | |
| 2435 DEFSUBR (Fuser_login_name); | |
| 2436 DEFSUBR (Fuser_real_login_name); | |
| 2437 DEFSUBR (Fuser_uid); | |
| 2438 DEFSUBR (Fuser_real_uid); | |
| 2439 DEFSUBR (Fuser_full_name); | |
| 2440 DEFSUBR (Fuser_home_directory); | |
| 2441 DEFSUBR (Femacs_pid); | |
| 2442 DEFSUBR (Fcurrent_time); | |
| 2443 DEFSUBR (Fcurrent_process_time); | |
| 2444 DEFSUBR (Fformat_time_string); | |
| 2445 DEFSUBR (Fdecode_time); | |
| 2446 DEFSUBR (Fencode_time); | |
| 2447 DEFSUBR (Fcurrent_time_string); | |
| 2448 DEFSUBR (Fcurrent_time_zone); | |
| 2449 DEFSUBR (Fset_time_zone_rule); | |
| 2450 DEFSUBR (Fsystem_name); | |
| 2451 DEFSUBR (Fformat); | |
| 2452 | |
| 2453 DEFSUBR (Finsert_buffer_substring); | |
| 2454 DEFSUBR (Fcompare_buffer_substrings); | |
| 2455 DEFSUBR (Fsubst_char_in_region); | |
| 2456 DEFSUBR (Ftranslate_region); | |
| 2457 DEFSUBR (Fdelete_region); | |
| 2458 DEFSUBR (Fwiden); | |
| 2459 DEFSUBR (Fnarrow_to_region); | |
| 2460 DEFSUBR (Fsave_restriction); | |
| 2461 DEFSUBR (Ftranspose_regions); | |
| 2462 | |
| 563 | 2463 DEFSYMBOL (Qzmacs_update_region); |
| 2464 DEFSYMBOL (Qzmacs_deactivate_region); | |
| 2465 DEFSYMBOL (Qzmacs_region_buffer); | |
| 428 | 2466 } |
| 2467 | |
| 2468 void | |
| 2469 vars_of_editfns (void) | |
| 2470 { | |
| 2471 staticpro (&Vsystem_name); | |
| 2472 #if 0 | |
| 2473 staticpro (&Vuser_name); | |
| 2474 staticpro (&Vuser_real_name); | |
| 2475 #endif | |
| 2476 DEFVAR_BOOL ("zmacs-regions", &zmacs_regions /* | |
| 2477 *Whether LISPM-style active regions should be used. | |
| 2478 This means that commands which operate on the region (the area between the | |
| 2479 point and the mark) will only work while the region is in the ``active'' | |
| 2480 state, which is indicated by highlighting. Executing most commands causes | |
| 2481 the region to not be in the active state, so (for example) \\[kill-region] will only | |
| 2482 work immediately after activating the region. | |
| 2483 | |
| 2484 More specifically: | |
| 2485 | |
| 2486 - Commands which operate on the region only work if the region is active. | |
| 2487 - Only a very small set of commands cause the region to become active: | |
| 444 | 2488 Those commands whose semantics are to mark an area, like `mark-defun'. |
| 428 | 2489 - The region is deactivated after each command that is executed, except that: |
| 2490 - "Motion" commands do not change whether the region is active or not. | |
| 2491 | |
| 2492 set-mark-command (C-SPC) pushes a mark and activates the region. Moving the | |
| 2493 cursor with normal motion commands (C-n, C-p, etc) will cause the region | |
| 2494 between point and the recently-pushed mark to be highlighted. It will | |
| 2495 remain highlighted until some non-motion command is executed. | |
| 2496 | |
| 2497 exchange-point-and-mark (\\[exchange-point-and-mark]) activates the region. So if you mark a | |
| 2498 region and execute a command that operates on it, you can reactivate the | |
| 2499 same region with \\[exchange-point-and-mark] (or perhaps \\[exchange-point-and-mark] \\[exchange-point-and-mark]) to operate on it | |
| 2500 again. | |
| 2501 | |
| 2502 Generally, commands which push marks as a means of navigation (like | |
| 2503 beginning-of-buffer and end-of-buffer (M-< and M->)) do not activate the | |
| 2504 region. But commands which push marks as a means of marking an area of | |
| 2505 text (like mark-defun (\\[mark-defun]), mark-word (\\[mark-word]) or mark-whole-buffer (\\[mark-whole-buffer])) | |
| 2506 do activate the region. | |
| 2507 | |
| 2508 The way the command loop actually works with regard to deactivating the | |
| 2509 region is as follows: | |
| 2510 | |
| 2511 - If the variable `zmacs-region-stays' has been set to t during the command | |
| 2512 just executed, the region is left alone (this is how the motion commands | |
| 2513 make the region stay around; see the `_' flag in the `interactive' | |
| 2514 specification). `zmacs-region-stays' is reset to nil before each command | |
| 2515 is executed. | |
| 2516 - If the function `zmacs-activate-region' has been called during the command | |
| 2517 just executed, the region is left alone. Very few functions should | |
| 2518 actually call this function. | |
| 2519 - Otherwise, if the region is active, the region is deactivated and | |
| 2520 the `zmacs-deactivate-region-hook' is called. | |
| 2521 */ ); | |
| 2522 /* Zmacs style active regions are now ON by default */ | |
| 2523 zmacs_regions = 1; | |
| 2524 | |
| 2525 DEFVAR_BOOL ("zmacs-region-active-p", &zmacs_region_active_p /* | |
| 2526 Do not alter this. It is for internal use only. | |
| 2527 */ ); | |
| 2528 zmacs_region_active_p = 0; | |
| 2529 | |
| 2530 DEFVAR_BOOL ("zmacs-region-stays", &zmacs_region_stays /* | |
| 2531 Whether the current command will deactivate the region. | |
| 2532 Commands which do not wish to affect whether the region is currently | |
| 2533 highlighted should set this to t. Normally, the region is turned off after | |
| 2534 executing each command that did not explicitly turn it on with the function | |
| 2535 zmacs-activate-region. Setting this to true lets a command be non-intrusive. | |
| 2536 See the variable `zmacs-regions'. | |
| 2537 | |
| 2538 The same effect can be achieved using the `_' interactive specification. | |
| 442 | 2539 |
| 2540 `zmacs-region-stays' is reset to nil before each command is executed. | |
| 428 | 2541 */ ); |
| 2542 zmacs_region_stays = 0; | |
| 2543 | |
| 2544 DEFVAR_BOOL ("atomic-extent-goto-char-p", &atomic_extent_goto_char_p /* | |
| 2545 Do not use this -- it will be going away soon. | |
| 2546 Indicates if `goto-char' has just been run. This information is allegedly | |
| 2547 needed to get the desired behavior for atomic extents and unfortunately | |
| 2548 is not available by any other means. | |
| 2549 */ ); | |
| 2550 atomic_extent_goto_char_p = 0; | |
| 2551 #ifdef AMPERSAND_FULL_NAME | |
| 771 | 2552 Fprovide (intern ("ampersand-full-name")); |
| 428 | 2553 #endif |
| 2554 | |
| 2555 DEFVAR_LISP ("user-full-name", &Vuser_full_name /* | |
| 2556 *The name of the user. | |
| 4266 | 2557 The function `user-full-name' will return the value of this variable, when |
| 2558 called without arguments. | |
| 428 | 2559 This is initialized to the value of the NAME environment variable. |
| 2560 */ ); | |
| 2561 /* Initialized at run-time. */ | |
| 2562 Vuser_full_name = Qnil; | |
| 2563 } |