Mercurial > hg > xemacs-beta
annotate src/editfns.c @ 4693:80cd90837ac5
Add argument information to remaining MANY or UNEVALLED C subrs.
src/ChangeLog addition:
2009-09-20 Aidan Kehoe <kehoea@parhasard.net>
* alloc.c (Flist):
(Fvector):
(Fbit_vector):
(Fmake_byte_code):
(Fstring):
* data.c (Feqlsign):
(Flss):
(Fgtr):
(Fleq):
(Fgeq):
(Fneq):
(Fgtr):
(Fplus):
(Fminus):
(Ftimes):
(Fdiv):
(Fquo):
(Fmax):
(Fmin):
(Flogand):
(Flogior):
(Flogxor):
* editfns.c (Fsave_excursion):
(Fsave_current_buffer):
(Fencode_time):
(Finsert):
(Finsert_before_markers):
(Fsave_restriction):
(Fformat):
* elhash.c (Fmake_hash_table):
* eval.c (Fdefun):
(Fdefmacro):
(Fcatch):
(Funwind_protect):
(Fcall_with_condition_handler):
(Ffuncall):
(Fapply):
(Frun_hooks):
* fns.c (Fappend):
(Fconcat):
(Fvconcat):
(Fbvconcat):
(Fnconc):
* print.c (Fwith_output_to_temp_buffer):
* process.c (Fstart_process_internal):
* window.c (Fsave_window_excursion):
* widget.c (Fwidget_apply):
Add argument information, in a form understood by
#'function-arglist, to all these MANY or UNEVALLED (that is to
say, special-operator) built-in functions.
| author | Aidan Kehoe <kehoea@parhasard.net> |
|---|---|
| date | Sun, 20 Sep 2009 21:29:00 +0100 |
| parents | c76b1bc6bd28 |
| children | a5210e70ffbe |
| 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
|
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 | |
| 865 { | |
| 867 | 866 cached_home_directory = qxestrdup ((Ibyte *) "C:\\"); |
| 428 | 867 output_home_warning = 1; |
| 868 } | |
| 442 | 869 #else /* !WIN32_NATIVE */ |
| 428 | 870 /* |
| 871 * Unix, typically. | |
| 872 * Using "/" isn't quite right, but what should we do? | |
| 873 * We probably should try to extract pw_dir from /etc/passwd, | |
| 874 * before falling back to this. | |
| 875 */ | |
| 867 | 876 cached_home_directory = qxestrdup ((Ibyte *) "/"); |
| 428 | 877 output_home_warning = 1; |
| 442 | 878 #endif /* !WIN32_NATIVE */ |
| 428 | 879 } |
| 880 if (initialized && output_home_warning) | |
| 881 { | |
| 882 warn_when_safe (Quser_files_and_directories, Qwarning, "\n" | |
| 883 " XEmacs was unable to determine a good value for the user's $HOME\n" | |
| 884 " directory, and will be using the value:\n" | |
| 885 " %s\n" | |
| 886 " This is probably incorrect.", | |
| 887 cached_home_directory | |
| 888 ); | |
| 889 } | |
| 890 } | |
| 891 return cached_home_directory; | |
| 892 } | |
| 893 | |
| 894 DEFUN ("user-home-directory", Fuser_home_directory, 0, 0, 0, /* | |
| 895 Return the user's home directory, as a string. | |
| 896 */ | |
| 897 ()) | |
| 898 { | |
| 867 | 899 Ibyte *path = get_home_directory (); |
| 428 | 900 |
| 771 | 901 return !path ? Qnil : |
| 902 Fexpand_file_name (Fsubstitute_in_file_name (build_intstring (path)), | |
| 428 | 903 Qnil); |
| 904 } | |
| 905 | |
| 906 DEFUN ("system-name", Fsystem_name, 0, 0, 0, /* | |
| 907 Return the name of the machine you are running on, as a string. | |
| 908 */ | |
| 909 ()) | |
| 910 { | |
| 771 | 911 return Fcopy_sequence (Vsystem_name); |
| 428 | 912 } |
| 913 | |
| 914 DEFUN ("emacs-pid", Femacs_pid, 0, 0, 0, /* | |
| 915 Return the process ID of Emacs, as an integer. | |
| 916 */ | |
| 917 ()) | |
| 918 { | |
| 771 | 919 return make_int (qxe_getpid ()); |
| 428 | 920 } |
| 921 | |
| 922 DEFUN ("current-time", Fcurrent_time, 0, 0, 0, /* | |
| 923 Return the current time, as the number of seconds since 1970-01-01 00:00:00. | |
| 924 The time is returned as a list of three integers. The first has the | |
| 925 most significant 16 bits of the seconds, while the second has the | |
| 926 least significant 16 bits. The third integer gives the microsecond | |
| 927 count. | |
| 928 | |
| 929 The microsecond count is zero on systems that do not provide | |
| 930 resolution finer than a second. | |
| 931 */ | |
| 932 ()) | |
| 933 { | |
| 934 EMACS_TIME t; | |
| 935 | |
| 936 EMACS_GET_TIME (t); | |
| 937 return list3 (make_int ((EMACS_SECS (t) >> 16) & 0xffff), | |
| 938 make_int ((EMACS_SECS (t) >> 0) & 0xffff), | |
| 939 make_int (EMACS_USECS (t))); | |
| 940 } | |
| 941 | |
| 942 DEFUN ("current-process-time", Fcurrent_process_time, 0, 0, 0, /* | |
| 943 Return the amount of time used by this XEmacs process so far. | |
| 944 The return value is a list of three floating-point numbers, expressing | |
| 945 the user, system, and real times used by the process. The user time | |
| 946 measures the time actually spent by the CPU executing the code in this | |
| 947 process. The system time measures time spent by the CPU executing kernel | |
| 948 code on behalf of this process (e.g. I/O requests made by the process). | |
| 949 | |
| 950 Note that the user and system times measure processor time, as opposed | |
| 951 to real time, and only accrue when the processor is actually doing | |
| 952 something: Time spent in an idle wait (waiting for user events to come | |
| 953 in or for I/O on a disk drive or other device to complete) does not | |
| 954 count. Thus, the user and system times will often be considerably | |
| 955 less than the real time. | |
| 956 | |
| 957 Some systems do not allow the user and system times to be distinguished. | |
| 958 In this case, the user time will be the total processor time used by | |
| 959 the process, and the system time will be 0. | |
| 960 | |
| 961 Some systems do not allow the real and processor times to be distinguished. | |
| 962 In this case, the user and real times will be the same and the system | |
| 963 time will be 0. | |
| 964 */ | |
| 965 ()) | |
| 966 { | |
| 967 double user, sys, real; | |
| 968 | |
| 969 get_process_times (&user, &sys, &real); | |
| 970 return list3 (make_float (user), make_float (sys), make_float (real)); | |
| 971 } | |
| 972 | |
| 973 | |
| 974 int lisp_to_time (Lisp_Object specified_time, time_t *result); | |
| 975 int | |
| 976 lisp_to_time (Lisp_Object specified_time, time_t *result) | |
| 977 { | |
| 978 Lisp_Object high, low; | |
| 979 | |
| 980 if (NILP (specified_time)) | |
| 981 return time (result) != -1; | |
| 982 | |
| 983 CHECK_CONS (specified_time); | |
| 984 high = XCAR (specified_time); | |
| 985 low = XCDR (specified_time); | |
| 986 if (CONSP (low)) | |
| 987 low = XCAR (low); | |
| 988 CHECK_INT (high); | |
| 989 CHECK_INT (low); | |
| 990 *result = (XINT (high) << 16) + (XINT (low) & 0xffff); | |
| 991 return *result >> 16 == XINT (high); | |
| 992 } | |
| 993 | |
| 994 Lisp_Object time_to_lisp (time_t the_time); | |
| 995 Lisp_Object | |
| 996 time_to_lisp (time_t the_time) | |
| 997 { | |
| 998 unsigned int item = (unsigned int) the_time; | |
| 999 return Fcons (make_int (item >> 16), make_int (item & 0xffff)); | |
| 1000 } | |
| 1001 | |
| 771 | 1002 size_t emacs_strftime (Extbyte *string, size_t max, const Extbyte *format, |
| 442 | 1003 const struct tm *tm); |
| 1004 static long difftm (const struct tm *a, const struct tm *b); | |
| 428 | 1005 |
| 1006 | |
| 1007 DEFUN ("format-time-string", Fformat_time_string, 1, 2, 0, /* | |
| 1008 Use FORMAT-STRING to format the time TIME. | |
| 1009 TIME is specified as (HIGH LOW . IGNORED) or (HIGH . LOW), as from | |
| 1010 `current-time' and `file-attributes'. If TIME is not specified it | |
| 1011 defaults to the current time. | |
| 1012 FORMAT-STRING may contain %-sequences to substitute parts of the time. | |
| 1013 %a is replaced by the abbreviated name of the day of week. | |
| 1014 %A is replaced by the full name of the day of week. | |
| 1015 %b is replaced by the abbreviated name of the month. | |
| 1016 %B is replaced by the full name of the month. | |
| 1017 %c is a synonym for "%x %X". | |
| 1018 %C is a locale-specific synonym, which defaults to "%A, %B %e, %Y" in the C locale. | |
| 1019 %d is replaced by the day of month, zero-padded. | |
| 1020 %D is a synonym for "%m/%d/%y". | |
| 1021 %e is replaced by the day of month, blank-padded. | |
| 4203 | 1022 %G is replaced by the year containing the ISO 8601 week |
| 1023 %g is replaced by the year of the ISO 8601 week within the century (00-99) | |
| 428 | 1024 %h is a synonym for "%b". |
| 1025 %H is replaced by the hour (00-23). | |
| 1026 %I is replaced by the hour (00-12). | |
| 1027 %j is replaced by the day of the year (001-366). | |
| 1028 %k is replaced by the hour (0-23), blank padded. | |
| 1029 %l is replaced by the hour (1-12), blank padded. | |
| 1030 %m is replaced by the month (01-12). | |
| 1031 %M is replaced by the minute (00-59). | |
| 1032 %n is a synonym for "\\n". | |
| 1033 %p is replaced by AM or PM, as appropriate. | |
| 1034 %r is a synonym for "%I:%M:%S %p". | |
| 1035 %R is a synonym for "%H:%M". | |
| 1036 %s is replaced by the time in seconds since 00:00:00, Jan 1, 1970 (a | |
| 1037 nonstandard extension) | |
| 1038 %S is replaced by the second (00-60). | |
| 1039 %t is a synonym for "\\t". | |
| 1040 %T is a synonym for "%H:%M:%S". | |
| 1041 %U is replaced by the week of the year (00-53), first day of week is Sunday. | |
| 4203 | 1042 %V is replaced by the ISO 8601 week number |
| 428 | 1043 %w is replaced by the day of week (0-6), Sunday is day 0. |
| 1044 %W is replaced by the week of the year (00-53), first day of week is Monday. | |
| 1045 %x is a locale-specific synonym, which defaults to "%D" in the C locale. | |
| 1046 %X is a locale-specific synonym, which defaults to "%T" in the C locale. | |
| 1047 %y is replaced by the year without century (00-99). | |
| 1048 %Y is replaced by the year with century. | |
| 4203 | 1049 %z is replaced by the time zone as a numeric offset (e.g +0530, -0800 etc.) |
| 428 | 1050 %Z is replaced by the time zone abbreviation. |
| 1051 | |
| 1052 The number of options reflects the `strftime' function. | |
| 1053 | |
| 1054 BUG: If the charset used by the current locale is not ISO 8859-1, the | |
| 1055 characters appearing in the day and month names may be incorrect. | |
| 1056 */ | |
| 1057 (format_string, time_)) | |
| 1058 { | |
| 1059 time_t value; | |
| 665 | 1060 Bytecount size; |
| 428 | 1061 |
| 1062 CHECK_STRING (format_string); | |
| 1063 | |
| 1064 if (! lisp_to_time (time_, &value)) | |
| 563 | 1065 invalid_argument ("Invalid time specification", Qunbound); |
| 428 | 1066 |
| 1067 /* This is probably enough. */ | |
| 1068 size = XSTRING_LENGTH (format_string) * 6 + 50; | |
| 1069 | |
| 1070 while (1) | |
| 1071 { | |
| 2367 | 1072 Extbyte *buf = alloca_extbytes (size); |
| 771 | 1073 Extbyte *formext; |
| 4203 | 1074 /* make a copy of the static buffer returned by localtime() */ |
| 1075 struct tm tm = * localtime(&value); | |
| 1076 | |
| 428 | 1077 *buf = 1; |
| 771 | 1078 |
| 1079 /* !!#### this use of external here is not totally safe, and | |
| 1080 potentially data lossy. */ | |
| 1081 LISP_STRING_TO_EXTERNAL (format_string, formext, Qnative); | |
| 4203 | 1082 if (emacs_strftime (buf, size, formext, &tm) |
| 428 | 1083 || !*buf) |
| 771 | 1084 return build_ext_string (buf, Qnative); |
| 428 | 1085 /* If buffer was too small, make it bigger. */ |
| 1086 size *= 2; | |
| 1087 } | |
| 1088 } | |
| 1089 | |
| 1090 DEFUN ("decode-time", Fdecode_time, 0, 1, 0, /* | |
| 1091 Decode a time value as (SEC MINUTE HOUR DAY MONTH YEAR DOW DST ZONE). | |
| 1092 The optional SPECIFIED-TIME should be a list of (HIGH LOW . IGNORED) | |
| 1093 or (HIGH . LOW), as from `current-time' and `file-attributes', or `nil' | |
| 1094 to use the current time. The list has the following nine members: | |
| 1095 SEC is an integer between 0 and 60; SEC is 60 for a leap second, which | |
| 1096 only some operating systems support. MINUTE is an integer between 0 and 59. | |
| 1097 HOUR is an integer between 0 and 23. DAY is an integer between 1 and 31. | |
| 1098 MONTH is an integer between 1 and 12. YEAR is an integer indicating the | |
| 1099 four-digit year. DOW is the day of week, an integer between 0 and 6, where | |
| 1100 0 is Sunday. DST is t if daylight savings time is effect, otherwise nil. | |
| 1101 ZONE is an integer indicating the number of seconds east of Greenwich. | |
| 1102 \(Note that Common Lisp has different meanings for DOW and ZONE.) | |
| 1103 */ | |
| 1104 (specified_time)) | |
| 1105 { | |
| 1106 time_t time_spec; | |
| 1107 struct tm save_tm; | |
| 1108 struct tm *decoded_time; | |
| 1109 Lisp_Object list_args[9]; | |
| 1110 | |
| 1111 if (! lisp_to_time (specified_time, &time_spec)) | |
| 563 | 1112 invalid_argument ("Invalid time specification", Qunbound); |
| 428 | 1113 |
| 1114 decoded_time = localtime (&time_spec); | |
| 1115 list_args[0] = make_int (decoded_time->tm_sec); | |
| 1116 list_args[1] = make_int (decoded_time->tm_min); | |
| 1117 list_args[2] = make_int (decoded_time->tm_hour); | |
| 1118 list_args[3] = make_int (decoded_time->tm_mday); | |
| 1119 list_args[4] = make_int (decoded_time->tm_mon + 1); | |
| 1120 list_args[5] = make_int (decoded_time->tm_year + 1900); | |
| 1121 list_args[6] = make_int (decoded_time->tm_wday); | |
| 1122 list_args[7] = (decoded_time->tm_isdst)? Qt : Qnil; | |
| 1123 | |
| 1124 /* Make a copy, in case gmtime modifies the struct. */ | |
| 1125 save_tm = *decoded_time; | |
| 1126 decoded_time = gmtime (&time_spec); | |
| 1127 if (decoded_time == 0) | |
| 1128 list_args[8] = Qnil; | |
| 1129 else | |
| 1130 list_args[8] = make_int (difftm (&save_tm, decoded_time)); | |
| 1131 return Flist (9, list_args); | |
| 1132 } | |
| 1133 | |
| 771 | 1134 static void set_time_zone_rule (Extbyte *tzstring); |
| 428 | 1135 |
| 707 | 1136 /* from GNU Emacs 21, per Simon Josefsson, modified by stephen |
| 1137 The slight inefficiency is justified since negative times are weird. */ | |
| 1138 Lisp_Object | |
| 771 | 1139 make_time (time_t tiempo) |
| 707 | 1140 { |
| 771 | 1141 return list2 (make_int (tiempo < 0 ? tiempo / 0x10000 : tiempo >> 16), |
| 1142 make_int (tiempo & 0xFFFF)); | |
| 707 | 1143 } |
| 1144 | |
| 428 | 1145 DEFUN ("encode-time", Fencode_time, 6, MANY, 0, /* |
|
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Aidan Kehoe <kehoea@parhasard.net>
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4470
diff
changeset
|
1146 Convert SECOND, MINUTE, HOUR, DAY, MONTH, YEAR and ZONE to internal time. |
| 428 | 1147 This is the reverse operation of `decode-time', which see. |
| 1148 ZONE defaults to the current time zone rule. This can | |
| 1149 be a string (as from `set-time-zone-rule'), or it can be a list | |
| 1150 \(as from `current-time-zone') or an integer (as from `decode-time') | |
| 1151 applied without consideration for daylight savings time. | |
| 1152 | |
| 1153 You can pass more than 7 arguments; then the first six arguments | |
| 1154 are used as SECOND through YEAR, and the *last* argument is used as ZONE. | |
| 1155 The intervening arguments are ignored. | |
| 1156 This feature lets (apply 'encode-time (decode-time ...)) work. | |
| 1157 | |
| 1158 Out-of-range values for SEC, MINUTE, HOUR, DAY, or MONTH are allowed; | |
| 1159 for example, a DAY of 0 means the day preceding the given month. | |
| 1160 Year numbers less than 100 are treated just like other year numbers. | |
| 1161 If you want them to stand for years in this century, you must do that yourself. | |
|
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4470
diff
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|
1162 |
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Add argument information to remaining MANY or UNEVALLED C subrs.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4470
diff
changeset
|
1163 arguments: (SECOND MINUTE HOUR DAY MONTH YEAR &optional ZONE &rest REST) |
| 428 | 1164 */ |
| 1165 (int nargs, Lisp_Object *args)) | |
| 1166 { | |
| 1167 time_t the_time; | |
| 1168 struct tm tm; | |
| 1169 Lisp_Object zone = (nargs > 6) ? args[nargs - 1] : Qnil; | |
| 1170 | |
| 1171 CHECK_INT (*args); tm.tm_sec = XINT (*args++); /* second */ | |
| 1172 CHECK_INT (*args); tm.tm_min = XINT (*args++); /* minute */ | |
| 1173 CHECK_INT (*args); tm.tm_hour = XINT (*args++); /* hour */ | |
| 1174 CHECK_INT (*args); tm.tm_mday = XINT (*args++); /* day */ | |
| 1175 CHECK_INT (*args); tm.tm_mon = XINT (*args++) - 1; /* month */ | |
| 1176 CHECK_INT (*args); tm.tm_year = XINT (*args++) - 1900;/* year */ | |
| 1177 | |
| 1178 tm.tm_isdst = -1; | |
| 1179 | |
| 1180 if (CONSP (zone)) | |
| 1181 zone = XCAR (zone); | |
| 1182 if (NILP (zone)) | |
| 1183 the_time = mktime (&tm); | |
| 1184 else | |
| 1185 { | |
| 771 | 1186 /* #### This business of modifying environ is horrendous! |
| 1187 Why don't we just putenv()? Why don't we implement our own | |
| 1188 funs that don't require this futzing? */ | |
| 1189 Extbyte tzbuf[100]; | |
| 1190 Extbyte *tzstring; | |
| 1191 Extbyte **oldenv = environ, **newenv; | |
| 428 | 1192 |
| 1193 if (STRINGP (zone)) | |
| 771 | 1194 LISP_STRING_TO_EXTERNAL (zone, tzstring, Qnative); |
| 428 | 1195 else if (INTP (zone)) |
| 1196 { | |
| 1197 int abszone = abs (XINT (zone)); | |
| 1198 sprintf (tzbuf, "XXX%s%d:%02d:%02d", "-" + (XINT (zone) < 0), | |
| 1199 abszone / (60*60), (abszone/60) % 60, abszone % 60); | |
| 1200 tzstring = tzbuf; | |
| 1201 } | |
| 1202 else | |
| 771 | 1203 invalid_argument ("Invalid time zone specification", Qunbound); |
| 428 | 1204 |
| 1205 /* Set TZ before calling mktime; merely adjusting mktime's returned | |
| 1206 value doesn't suffice, since that would mishandle leap seconds. */ | |
| 1207 set_time_zone_rule (tzstring); | |
| 1208 | |
| 1209 the_time = mktime (&tm); | |
| 1210 | |
| 1211 /* Restore TZ to previous value. */ | |
| 1212 newenv = environ; | |
| 1213 environ = oldenv; | |
| 1214 free (newenv); | |
| 1215 #ifdef LOCALTIME_CACHE | |
| 1216 tzset (); | |
| 1217 #endif | |
| 1218 } | |
| 1219 | |
| 1220 if (the_time == (time_t) -1) | |
| 563 | 1221 invalid_argument ("Specified time is not representable", Qunbound); |
| 428 | 1222 |
| 707 | 1223 return make_time (the_time); |
| 428 | 1224 } |
| 1225 | |
| 1226 DEFUN ("current-time-string", Fcurrent_time_string, 0, 1, 0, /* | |
| 1227 Return the current time, as a human-readable string. | |
| 1228 Programs can use this function to decode a time, | |
| 1229 since the number of columns in each field is fixed. | |
| 1230 The format is `Sun Sep 16 01:03:52 1973'. | |
| 1231 If an argument is given, it specifies a time to format | |
| 1232 instead of the current time. The argument should have the form: | |
| 1233 (HIGH . LOW) | |
| 1234 or the form: | |
| 1235 (HIGH LOW . IGNORED). | |
| 1236 Thus, you can use times obtained from `current-time' | |
| 1237 and from `file-attributes'. | |
| 1238 */ | |
| 1239 (specified_time)) | |
| 1240 { | |
| 1241 time_t value; | |
| 867 | 1242 Ibyte *the_ctime; |
| 647 | 1243 EMACS_INT len; /* this is what make_ext_string() accepts; #### |
| 665 | 1244 should it be an Bytecount? */ |
| 428 | 1245 |
| 1246 if (! lisp_to_time (specified_time, &value)) | |
| 1247 value = -1; | |
| 771 | 1248 the_ctime = qxe_ctime (&value); |
| 428 | 1249 |
| 442 | 1250 /* ctime is documented as always returning a "\n\0"-terminated |
| 1251 26-byte American time string, but let's be careful anyways. */ | |
| 1252 for (len = 0; the_ctime[len] != '\n' && the_ctime[len] != '\0'; len++) | |
| 1253 ; | |
| 428 | 1254 |
| 771 | 1255 return make_string (the_ctime, len); |
| 428 | 1256 } |
| 1257 | |
| 1258 #define TM_YEAR_ORIGIN 1900 | |
| 1259 | |
| 1260 /* Yield A - B, measured in seconds. */ | |
| 1261 static long | |
| 442 | 1262 difftm (const struct tm *a, const struct tm *b) |
| 428 | 1263 { |
| 1264 int ay = a->tm_year + (TM_YEAR_ORIGIN - 1); | |
| 1265 int by = b->tm_year + (TM_YEAR_ORIGIN - 1); | |
| 1266 /* Some compilers can't handle this as a single return statement. */ | |
| 1267 long days = ( | |
| 1268 /* difference in day of year */ | |
| 1269 a->tm_yday - b->tm_yday | |
| 1270 /* + intervening leap days */ | |
| 1271 + ((ay >> 2) - (by >> 2)) | |
| 1272 - (ay/100 - by/100) | |
| 1273 + ((ay/100 >> 2) - (by/100 >> 2)) | |
| 1274 /* + difference in years * 365 */ | |
| 1275 + (long)(ay-by) * 365 | |
| 1276 ); | |
| 1277 return (60*(60*(24*days + (a->tm_hour - b->tm_hour)) | |
| 1278 + (a->tm_min - b->tm_min)) | |
| 1279 + (a->tm_sec - b->tm_sec)); | |
| 1280 } | |
| 1281 | |
| 1282 DEFUN ("current-time-zone", Fcurrent_time_zone, 0, 1, 0, /* | |
| 1283 Return the offset and name for the local time zone. | |
| 1284 This returns a list of the form (OFFSET NAME). | |
| 1285 OFFSET is an integer number of seconds ahead of UTC (east of Greenwich). | |
| 1286 A negative value means west of Greenwich. | |
| 1287 NAME is a string giving the name of the time zone. | |
| 1288 If an argument is given, it specifies when the time zone offset is determined | |
| 1289 instead of using the current time. The argument should have the form: | |
| 1290 (HIGH . LOW) | |
| 1291 or the form: | |
| 1292 (HIGH LOW . IGNORED). | |
| 1293 Thus, you can use times obtained from `current-time' | |
| 1294 and from `file-attributes'. | |
| 1295 | |
| 1296 Some operating systems cannot provide all this information to Emacs; | |
| 1297 in this case, `current-time-zone' returns a list containing nil for | |
| 1298 the data it can't find. | |
| 1299 */ | |
| 1300 (specified_time)) | |
| 1301 { | |
| 1302 time_t value; | |
| 1303 struct tm *t = NULL; | |
| 1304 | |
| 1305 if (lisp_to_time (specified_time, &value) | |
| 1306 && (t = gmtime (&value)) != 0) | |
| 1307 { | |
| 1308 struct tm gmt = *t; /* Make a copy, in case localtime modifies *t. */ | |
| 1309 long offset; | |
| 771 | 1310 Extbyte *s; |
| 1311 Lisp_Object tem; | |
| 428 | 1312 |
| 1313 t = localtime (&value); | |
| 1314 offset = difftm (t, &gmt); | |
| 1315 s = 0; | |
| 1316 #ifdef HAVE_TM_ZONE | |
| 1317 if (t->tm_zone) | |
| 771 | 1318 s = (Extbyte *) t->tm_zone; |
| 428 | 1319 #else /* not HAVE_TM_ZONE */ |
| 1320 #ifdef HAVE_TZNAME | |
| 1321 if (t->tm_isdst == 0 || t->tm_isdst == 1) | |
| 1322 s = tzname[t->tm_isdst]; | |
| 1323 #endif | |
| 1324 #endif /* not HAVE_TM_ZONE */ | |
| 771 | 1325 if (s) |
| 1326 tem = build_ext_string (s, Qnative); | |
| 1327 else | |
| 428 | 1328 { |
| 867 | 1329 Ibyte buf[6]; |
| 771 | 1330 |
| 428 | 1331 /* No local time zone name is available; use "+-NNNN" instead. */ |
| 1332 int am = (offset < 0 ? -offset : offset) / 60; | |
| 771 | 1333 qxesprintf (buf, "%c%02d%02d", (offset < 0 ? '-' : '+'), am/60, |
| 1334 am%60); | |
| 1335 tem = build_intstring (buf); | |
| 428 | 1336 } |
| 771 | 1337 return list2 (make_int (offset), tem); |
| 428 | 1338 } |
| 1339 else | |
| 1340 return list2 (Qnil, Qnil); | |
| 1341 } | |
| 1342 | |
| 1343 #ifdef LOCALTIME_CACHE | |
| 1344 | |
| 1345 /* These two values are known to load tz files in buggy implementations, | |
| 1346 i.e. Solaris 1 executables running under either Solaris 1 or Solaris 2. | |
| 1347 Their values shouldn't matter in non-buggy implementations. | |
| 1348 We don't use string literals for these strings, | |
| 1349 since if a string in the environment is in readonly | |
| 1350 storage, it runs afoul of bugs in SVR4 and Solaris 2.3. | |
| 1351 See Sun bugs 1113095 and 1114114, ``Timezone routines | |
| 1352 improperly modify environment''. */ | |
| 1353 | |
| 2367 | 1354 static Ascbyte set_time_zone_rule_tz1[] = "TZ=GMT+0"; |
| 1355 static Ascbyte set_time_zone_rule_tz2[] = "TZ=GMT+1"; | |
| 428 | 1356 |
| 1357 #endif | |
| 1358 | |
| 1359 /* Set the local time zone rule to TZSTRING. | |
| 1360 This allocates memory into `environ', which it is the caller's | |
| 1361 responsibility to free. */ | |
| 1362 static void | |
| 771 | 1363 set_time_zone_rule (Extbyte *tzstring) |
| 428 | 1364 { |
| 1365 int envptrs; | |
| 771 | 1366 Extbyte **from, **to, **newenv; |
| 428 | 1367 |
| 1368 for (from = environ; *from; from++) | |
| 1369 continue; | |
| 1370 envptrs = from - environ + 2; | |
| 771 | 1371 newenv = to = (Extbyte **) xmalloc (envptrs * sizeof (Extbyte *) |
| 428 | 1372 + (tzstring ? strlen (tzstring) + 4 : 0)); |
| 1373 if (tzstring) | |
| 1374 { | |
| 771 | 1375 Extbyte *t = (Extbyte *) (to + envptrs); |
| 428 | 1376 strcpy (t, "TZ="); |
| 1377 strcat (t, tzstring); | |
| 1378 *to++ = t; | |
| 1379 } | |
| 1380 | |
| 1381 for (from = environ; *from; from++) | |
| 1382 if (strncmp (*from, "TZ=", 3) != 0) | |
| 1383 *to++ = *from; | |
| 1384 *to = 0; | |
| 1385 | |
| 1386 environ = newenv; | |
| 1387 | |
| 1388 #ifdef LOCALTIME_CACHE | |
| 1389 { | |
| 1390 /* In SunOS 4.1.3_U1 and 4.1.4, if TZ has a value like | |
| 1391 "US/Pacific" that loads a tz file, then changes to a value like | |
| 1392 "XXX0" that does not load a tz file, and then changes back to | |
| 1393 its original value, the last change is (incorrectly) ignored. | |
| 1394 Also, if TZ changes twice in succession to values that do | |
| 1395 not load a tz file, tzset can dump core (see Sun bug#1225179). | |
| 1396 The following code works around these bugs. */ | |
| 1397 | |
| 1398 if (tzstring) | |
| 1399 { | |
| 1400 /* Temporarily set TZ to a value that loads a tz file | |
| 1401 and that differs from tzstring. */ | |
| 771 | 1402 Extbyte *tz = *newenv; |
| 428 | 1403 *newenv = (strcmp (tzstring, set_time_zone_rule_tz1 + 3) == 0 |
| 1404 ? set_time_zone_rule_tz2 : set_time_zone_rule_tz1); | |
| 1405 tzset (); | |
| 1406 *newenv = tz; | |
| 1407 } | |
| 1408 else | |
| 1409 { | |
| 1410 /* The implied tzstring is unknown, so temporarily set TZ to | |
| 1411 two different values that each load a tz file. */ | |
| 1412 *to = set_time_zone_rule_tz1; | |
| 1413 to[1] = 0; | |
| 1414 tzset (); | |
| 1415 *to = set_time_zone_rule_tz2; | |
| 1416 tzset (); | |
| 1417 *to = 0; | |
| 1418 } | |
| 1419 | |
| 1420 /* Now TZ has the desired value, and tzset can be invoked safely. */ | |
| 1421 } | |
| 1422 | |
| 1423 tzset (); | |
| 1424 #endif | |
| 1425 } | |
| 1426 | |
| 1427 DEFUN ("set-time-zone-rule", Fset_time_zone_rule, 1, 1, 0, /* | |
| 1428 Set the local time zone using TZ, a string specifying a time zone rule. | |
| 1429 If TZ is nil, use implementation-defined default time zone information. | |
| 1430 */ | |
| 1431 (tz)) | |
| 1432 { | |
| 771 | 1433 Extbyte *tzstring; |
| 428 | 1434 |
| 1435 if (NILP (tz)) | |
| 1436 tzstring = 0; | |
| 1437 else | |
| 1438 { | |
| 1439 CHECK_STRING (tz); | |
| 771 | 1440 LISP_STRING_TO_EXTERNAL (tz, tzstring, Qnative); |
| 428 | 1441 } |
| 1442 | |
| 1443 set_time_zone_rule (tzstring); | |
| 1444 if (environbuf) | |
| 1726 | 1445 xfree (environbuf, Extbyte **); |
| 428 | 1446 environbuf = environ; |
| 1447 | |
| 1448 return Qnil; | |
| 1449 } | |
| 1450 | |
| 1451 | |
| 1452 void | |
| 1453 buffer_insert1 (struct buffer *buf, Lisp_Object arg) | |
| 1454 { | |
| 1455 /* This function can GC */ | |
| 1456 struct gcpro gcpro1; | |
| 1457 GCPRO1 (arg); | |
| 1458 retry: | |
| 1459 if (CHAR_OR_CHAR_INTP (arg)) | |
| 1460 { | |
| 1461 buffer_insert_emacs_char (buf, XCHAR_OR_CHAR_INT (arg)); | |
| 1462 } | |
| 1463 else if (STRINGP (arg)) | |
| 1464 { | |
| 1465 buffer_insert_lisp_string (buf, arg); | |
| 1466 } | |
| 1467 else | |
| 1468 { | |
| 1469 arg = wrong_type_argument (Qchar_or_string_p, arg); | |
| 1470 goto retry; | |
| 1471 } | |
| 1472 UNGCPRO; | |
| 1473 } | |
| 1474 | |
| 1475 | |
| 1476 /* Callers passing one argument to Finsert need not gcpro the | |
| 1477 argument "array", since the only element of the array will | |
| 1478 not be used after calling insert_emacs_char or insert_lisp_string, | |
| 1479 so we don't care if it gets trashed. */ | |
| 1480 | |
| 1481 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
|
1482 Insert ARGS, either strings or characters, at point. |
| 428 | 1483 Point moves forward so that it ends up after the inserted text. |
| 1484 Any other markers at the point of insertion remain before the text. | |
| 1485 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
|
1486 |
|
80cd90837ac5
Add argument information to remaining MANY or UNEVALLED C subrs.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4470
diff
changeset
|
1487 arguments: (&rest ARGS) |
| 428 | 1488 */ |
| 1489 (int nargs, Lisp_Object *args)) | |
| 1490 { | |
| 1491 /* This function can GC */ | |
| 1492 REGISTER int argnum; | |
| 1493 | |
| 1494 for (argnum = 0; argnum < nargs; argnum++) | |
| 1495 { | |
| 1496 buffer_insert1 (current_buffer, args[argnum]); | |
| 1497 } | |
| 1498 | |
| 1499 return Qnil; | |
| 1500 } | |
| 1501 | |
| 1502 DEFUN ("insert-before-markers", Finsert_before_markers, 0, MANY, 0, /* | |
| 1503 Insert strings or characters at point, relocating markers after the text. | |
| 1504 Point moves forward so that it ends up after the inserted text. | |
| 1505 Any other markers at the point of insertion also end up after the text. | |
|
4693
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Aidan Kehoe <kehoea@parhasard.net>
parents:
4470
diff
changeset
|
1506 |
|
80cd90837ac5
Add argument information to remaining MANY or UNEVALLED C subrs.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4470
diff
changeset
|
1507 arguments: (&rest ARGS) |
| 428 | 1508 */ |
| 1509 (int nargs, Lisp_Object *args)) | |
| 1510 { | |
| 1511 /* This function can GC */ | |
| 1512 REGISTER int argnum; | |
| 1513 REGISTER Lisp_Object tem; | |
| 1514 | |
| 1515 for (argnum = 0; argnum < nargs; argnum++) | |
| 1516 { | |
| 1517 tem = args[argnum]; | |
| 1518 retry: | |
| 1519 if (CHAR_OR_CHAR_INTP (tem)) | |
| 1520 { | |
| 1521 buffer_insert_emacs_char_1 (current_buffer, -1, | |
| 1522 XCHAR_OR_CHAR_INT (tem), | |
| 1523 INSDEL_BEFORE_MARKERS); | |
| 1524 } | |
| 1525 else if (STRINGP (tem)) | |
| 1526 { | |
| 1527 buffer_insert_lisp_string_1 (current_buffer, -1, tem, | |
| 1528 INSDEL_BEFORE_MARKERS); | |
| 1529 } | |
| 1530 else | |
| 1531 { | |
| 1532 tem = wrong_type_argument (Qchar_or_string_p, tem); | |
| 1533 goto retry; | |
| 1534 } | |
| 1535 } | |
| 1536 return Qnil; | |
| 1537 } | |
| 1538 | |
| 1539 DEFUN ("insert-string", Finsert_string, 1, 2, 0, /* | |
| 1540 Insert STRING into BUFFER at BUFFER's point. | |
| 1541 Point moves forward so that it ends up after the inserted text. | |
| 1542 Any other markers at the point of insertion remain before the text. | |
| 1543 If a string has non-null string-extent-data, new extents will be created. | |
| 1544 BUFFER defaults to the current buffer. | |
| 1545 */ | |
| 1546 (string, buffer)) | |
| 1547 { | |
| 1548 struct buffer *b = decode_buffer (buffer, 1); | |
| 1549 CHECK_STRING (string); | |
| 1550 buffer_insert_lisp_string (b, string); | |
| 1551 return Qnil; | |
| 1552 } | |
| 1553 | |
| 1554 /* Third argument in FSF is INHERIT: | |
| 1555 | |
| 1556 "The optional third arg INHERIT, if non-nil, says to inherit text properties | |
| 1557 from adjoining text, if those properties are sticky." | |
| 1558 | |
| 1559 Jamie thinks this is bogus. */ | |
| 1560 | |
| 1561 | |
| 1562 DEFUN ("insert-char", Finsert_char, 1, 4, 0, /* | |
| 444 | 1563 Insert COUNT copies of CHARACTER into BUFFER. |
| 428 | 1564 Point and all markers are affected as in the function `insert'. |
| 1565 COUNT defaults to 1 if omitted. | |
| 1566 The optional third arg IGNORED is INHERIT under FSF Emacs. | |
| 1567 This is highly bogus, however, and XEmacs always behaves as if | |
| 1568 `t' were passed to INHERIT. | |
| 1569 The optional fourth arg BUFFER specifies the buffer to insert the | |
| 1570 text into. If BUFFER is nil, the current buffer is assumed. | |
| 1571 */ | |
| 2286 | 1572 (character, count, UNUSED (ignored), buffer)) |
| 428 | 1573 { |
| 1574 /* This function can GC */ | |
| 867 | 1575 REGISTER Ibyte *string; |
| 814 | 1576 REGISTER Bytecount slen; |
| 1577 REGISTER Bytecount i, j; | |
| 428 | 1578 REGISTER Bytecount n; |
| 1579 REGISTER Bytecount charlen; | |
| 867 | 1580 Ibyte str[MAX_ICHAR_LEN]; |
| 428 | 1581 struct buffer *b = decode_buffer (buffer, 1); |
| 1582 int cou; | |
| 1583 | |
| 444 | 1584 CHECK_CHAR_COERCE_INT (character); |
| 428 | 1585 if (NILP (count)) |
| 1586 cou = 1; | |
| 1587 else | |
| 1588 { | |
| 1589 CHECK_INT (count); | |
| 1590 cou = XINT (count); | |
| 1591 } | |
| 1592 | |
| 867 | 1593 charlen = set_itext_ichar (str, XCHAR (character)); |
| 428 | 1594 n = cou * charlen; |
| 1595 if (n <= 0) | |
| 1596 return Qnil; | |
| 814 | 1597 slen = min (n, (Bytecount) 768); |
| 2367 | 1598 string = alloca_ibytes (slen); |
| 428 | 1599 /* Write as many copies of the character into the temp string as will fit. */ |
| 1600 for (i = 0; i + charlen <= slen; i += charlen) | |
| 1601 for (j = 0; j < charlen; j++) | |
| 1602 string[i + j] = str[j]; | |
| 1603 slen = i; | |
| 1604 while (n >= slen) | |
| 1605 { | |
| 1606 buffer_insert_raw_string (b, string, slen); | |
| 1607 n -= slen; | |
| 1608 } | |
| 1609 if (n > 0) | |
| 1610 #if 0 /* FSFmacs bogosity */ | |
| 1611 { | |
| 1612 if (!NILP (inherit)) | |
| 1613 insert_and_inherit (string, n); | |
| 1614 else | |
| 1615 insert (string, n); | |
| 1616 } | |
| 1617 #else | |
| 1618 buffer_insert_raw_string (b, string, n); | |
| 1619 #endif | |
| 1620 | |
| 1621 return Qnil; | |
| 1622 } | |
| 1623 | |
| 1624 | |
| 1625 /* Making strings from buffer contents. */ | |
| 1626 | |
| 1627 DEFUN ("buffer-substring", Fbuffer_substring, 0, 3, 0, /* | |
| 1628 Return the contents of part of BUFFER as a string. | |
| 1629 The two arguments START and END are character positions; | |
| 1630 they can be in either order. If omitted, they default to the beginning | |
| 1631 and end of BUFFER, respectively. | |
| 1632 If there are duplicable extents in the region, the string remembers | |
| 1633 them in its extent data. | |
| 1634 If BUFFER is nil, the current buffer is assumed. | |
| 1635 */ | |
| 1636 (start, end, buffer)) | |
| 1637 { | |
| 1638 /* This function can GC */ | |
| 665 | 1639 Charbpos begv, zv; |
| 428 | 1640 struct buffer *b = decode_buffer (buffer, 1); |
| 1641 | |
| 1642 get_buffer_range_char (b, start, end, &begv, &zv, GB_ALLOW_NIL); | |
| 1643 return make_string_from_buffer (b, begv, zv - begv); | |
| 1644 } | |
| 1645 | |
| 1646 /* It might make more sense to name this | |
| 1647 `buffer-substring-no-extents', but this name is FSFmacs-compatible, | |
| 1648 and what the function does is probably good enough for what the | |
| 1649 user-code will typically want to use it for. */ | |
| 1650 DEFUN ("buffer-substring-no-properties", Fbuffer_substring_no_properties, 0, 3, 0, /* | |
| 444 | 1651 Return the text from START to END as a string, without copying the extents. |
| 428 | 1652 */ |
| 1653 (start, end, buffer)) | |
| 1654 { | |
| 1655 /* This function can GC */ | |
| 665 | 1656 Charbpos begv, zv; |
| 428 | 1657 struct buffer *b = decode_buffer (buffer, 1); |
| 1658 | |
| 1659 get_buffer_range_char (b, start, end, &begv, &zv, GB_ALLOW_NIL); | |
| 1660 return make_string_from_buffer_no_extents (b, begv, zv - begv); | |
| 1661 } | |
| 1662 | |
| 1663 DEFUN ("insert-buffer-substring", Finsert_buffer_substring, 1, 3, 0, /* | |
| 1664 Insert before point a substring of the contents of buffer BUFFER. | |
| 1665 BUFFER may be a buffer or a buffer name. | |
| 1666 Arguments START and END are character numbers specifying the substring. | |
| 1667 They default to the beginning and the end of BUFFER. | |
| 1668 */ | |
| 1669 (buffer, start, end)) | |
| 1670 { | |
| 1671 /* This function can GC */ | |
| 665 | 1672 Charbpos b, e; |
| 428 | 1673 struct buffer *bp; |
| 1674 | |
| 1675 bp = XBUFFER (get_buffer (buffer, 1)); | |
| 1676 get_buffer_range_char (bp, start, end, &b, &e, GB_ALLOW_NIL); | |
| 1677 | |
| 1678 if (b < e) | |
| 1679 buffer_insert_from_buffer (current_buffer, bp, b, e - b); | |
| 1680 | |
| 1681 return Qnil; | |
| 1682 } | |
| 1683 | |
| 1684 DEFUN ("compare-buffer-substrings", Fcompare_buffer_substrings, 6, 6, 0, /* | |
| 1685 Compare two substrings of two buffers; return result as number. | |
| 1686 the value is -N if first string is less after N-1 chars, | |
| 1687 +N if first string is greater after N-1 chars, or 0 if strings match. | |
| 1688 Each substring is represented as three arguments: BUFFER, START and END. | |
| 1689 That makes six args in all, three for each substring. | |
| 1690 | |
| 1691 The value of `case-fold-search' in the current buffer | |
| 1692 determines whether case is significant or ignored. | |
| 1693 */ | |
| 1694 (buffer1, start1, end1, buffer2, start2, end2)) | |
| 1695 { | |
| 665 | 1696 Charbpos begp1, endp1, begp2, endp2; |
| 428 | 1697 REGISTER Charcount len1, len2, length, i; |
| 1698 struct buffer *bp1, *bp2; | |
| 1699 Lisp_Object trt = ((!NILP (current_buffer->case_fold_search)) ? | |
| 446 | 1700 XCASE_TABLE_CANON (current_buffer->case_table) : Qnil); |
| 428 | 1701 |
| 1702 /* Find the first buffer and its substring. */ | |
| 1703 | |
| 1704 bp1 = decode_buffer (buffer1, 1); | |
| 1705 get_buffer_range_char (bp1, start1, end1, &begp1, &endp1, GB_ALLOW_NIL); | |
| 1706 | |
| 1707 /* Likewise for second substring. */ | |
| 1708 | |
| 1709 bp2 = decode_buffer (buffer2, 1); | |
| 1710 get_buffer_range_char (bp2, start2, end2, &begp2, &endp2, GB_ALLOW_NIL); | |
| 1711 | |
| 1712 len1 = endp1 - begp1; | |
| 1713 len2 = endp2 - begp2; | |
| 1714 length = len1; | |
| 1715 if (len2 < length) | |
| 1716 length = len2; | |
| 1717 | |
| 1718 for (i = 0; i < length; i++) | |
| 1719 { | |
| 867 | 1720 Ichar c1 = BUF_FETCH_CHAR (bp1, begp1 + i); |
| 1721 Ichar c2 = BUF_FETCH_CHAR (bp2, begp2 + i); | |
| 428 | 1722 if (!NILP (trt)) |
| 1723 { | |
| 1724 c1 = TRT_TABLE_OF (trt, c1); | |
| 1725 c2 = TRT_TABLE_OF (trt, c2); | |
| 1726 } | |
| 1727 if (c1 < c2) | |
| 1728 return make_int (- 1 - i); | |
| 1729 if (c1 > c2) | |
| 1730 return make_int (i + 1); | |
| 1731 } | |
| 1732 | |
| 1733 /* The strings match as far as they go. | |
| 1734 If one is shorter, that one is less. */ | |
| 1735 if (length < len1) | |
| 1736 return make_int (length + 1); | |
| 1737 else if (length < len2) | |
| 1738 return make_int (- length - 1); | |
| 1739 | |
| 1740 /* Same length too => they are equal. */ | |
| 1741 return Qzero; | |
| 1742 } | |
| 1743 | |
| 1744 | |
| 1745 static Lisp_Object | |
| 1746 subst_char_in_region_unwind (Lisp_Object arg) | |
| 1747 { | |
| 1748 XBUFFER (XCAR (arg))->undo_list = XCDR (arg); | |
| 1749 return Qnil; | |
| 1750 } | |
| 1751 | |
| 1752 static Lisp_Object | |
| 1753 subst_char_in_region_unwind_1 (Lisp_Object arg) | |
| 1754 { | |
| 1755 XBUFFER (XCAR (arg))->filename = XCDR (arg); | |
| 1756 return Qnil; | |
| 1757 } | |
| 1758 | |
| 1759 DEFUN ("subst-char-in-region", Fsubst_char_in_region, 4, 5, 0, /* | |
| 1760 From START to END, replace FROMCHAR with TOCHAR each time it occurs. | |
| 1761 If optional arg NOUNDO is non-nil, don't record this change for undo | |
| 1762 and don't mark the buffer as really changed. | |
| 1763 */ | |
| 1764 (start, end, fromchar, tochar, noundo)) | |
| 1765 { | |
| 1766 /* This function can GC */ | |
| 665 | 1767 Charbpos pos, stop; |
| 867 | 1768 Ichar fromc, toc; |
| 428 | 1769 int mc_count; |
| 1770 struct buffer *buf = current_buffer; | |
| 1771 int count = specpdl_depth (); | |
| 1772 | |
| 1773 get_buffer_range_char (buf, start, end, &pos, &stop, 0); | |
| 1774 CHECK_CHAR_COERCE_INT (fromchar); | |
| 1775 CHECK_CHAR_COERCE_INT (tochar); | |
| 1776 | |
| 1777 fromc = XCHAR (fromchar); | |
| 1778 toc = XCHAR (tochar); | |
| 1779 | |
| 1780 /* If we don't want undo, turn off putting stuff on the list. | |
| 1781 That's faster than getting rid of things, | |
| 1782 and it prevents even the entry for a first change. | |
| 1783 Also inhibit locking the file. */ | |
| 1784 if (!NILP (noundo)) | |
| 1785 { | |
| 1786 record_unwind_protect (subst_char_in_region_unwind, | |
| 1787 Fcons (Fcurrent_buffer (), buf->undo_list)); | |
| 1788 buf->undo_list = Qt; | |
| 1789 /* Don't do file-locking. */ | |
| 1790 record_unwind_protect (subst_char_in_region_unwind_1, | |
| 1791 Fcons (Fcurrent_buffer (), buf->filename)); | |
| 1792 buf->filename = Qnil; | |
| 1793 } | |
| 1794 | |
| 1795 mc_count = begin_multiple_change (buf, pos, stop); | |
| 1796 while (pos < stop) | |
| 1797 { | |
| 1798 if (BUF_FETCH_CHAR (buf, pos) == fromc) | |
| 1799 { | |
| 1800 /* There used to be some code here that set the buffer to | |
| 1801 unmodified if NOUNDO was specified and there was only | |
| 1802 one change to the buffer since it was last saved. | |
| 1803 This is a crock of shit, so I'm not duplicating this | |
| 1804 behavior. I think this was left over from when | |
| 1805 prepare_to_modify_buffer() actually bumped MODIFF, | |
| 1806 so that code was supposed to undo this change. --ben */ | |
| 1807 buffer_replace_char (buf, pos, toc, !NILP (noundo), 0); | |
| 1808 | |
| 1809 /* If noundo is not nil then we don't mark the buffer as | |
| 1810 modified. In reality that needs to happen externally | |
| 1811 only. Internally redisplay needs to know that the actual | |
| 1812 contents it should be displaying have changed. */ | |
| 1813 if (!NILP (noundo)) | |
| 1814 Fset_buffer_modified_p (Fbuffer_modified_p (Qnil), Qnil); | |
| 1815 } | |
| 1816 pos++; | |
| 1817 } | |
| 1818 end_multiple_change (buf, mc_count); | |
| 1819 | |
| 771 | 1820 unbind_to (count); |
| 428 | 1821 return Qnil; |
| 1822 } | |
| 1823 | |
| 1824 /* #### Shouldn't this also accept a BUFFER argument, in the good old | |
| 1825 XEmacs tradition? */ | |
| 1826 DEFUN ("translate-region", Ftranslate_region, 3, 3, 0, /* | |
| 1827 Translate characters from START to END according to TABLE. | |
| 1828 | |
| 1829 If TABLE is a string, the Nth character in it is the mapping for the | |
| 1830 character with code N. | |
| 1831 | |
| 1832 If TABLE is a vector, its Nth element is the mapping for character | |
| 1833 with code N. The values of elements may be characters, strings, or | |
| 1834 nil (nil meaning don't replace.) | |
| 1835 | |
| 1836 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
|
1837 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
|
1838 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
|
1839 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
|
1840 `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
|
1841 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
|
1842 not all of them, the most generally useful table type here is `generic'. |
| 428 | 1843 |
| 1844 Returns the number of substitutions performed. | |
| 1845 */ | |
| 1846 (start, end, table)) | |
| 1847 { | |
| 1848 /* This function can GC */ | |
| 665 | 1849 Charbpos pos, stop; /* Limits of the region. */ |
| 428 | 1850 int cnt = 0; /* Number of changes made. */ |
| 1851 int mc_count; | |
| 1852 struct buffer *buf = current_buffer; | |
| 867 | 1853 Ichar oc; |
| 428 | 1854 |
| 1855 get_buffer_range_char (buf, start, end, &pos, &stop, 0); | |
| 1856 mc_count = begin_multiple_change (buf, pos, stop); | |
| 1857 if (STRINGP (table)) | |
| 1858 { | |
| 826 | 1859 Charcount size = string_char_length (table); |
| 428 | 1860 #ifdef MULE |
| 867 | 1861 /* Under Mule, string_ichar(n) is O(n), so for large tables or |
| 1862 large regions it makes sense to create an array of Ichars. */ | |
| 428 | 1863 if (size * (stop - pos) > 65536) |
| 1864 { | |
| 867 | 1865 Ichar *etable = alloca_array (Ichar, size); |
| 1866 convert_ibyte_string_into_ichar_string | |
| 793 | 1867 (XSTRING_DATA (table), XSTRING_LENGTH (table), etable); |
| 428 | 1868 for (; pos < stop && (oc = BUF_FETCH_CHAR (buf, pos), 1); pos++) |
| 1869 { | |
| 1870 if (oc < size) | |
| 1871 { | |
| 867 | 1872 Ichar nc = etable[oc]; |
| 428 | 1873 if (nc != oc) |
| 1874 { | |
| 1875 buffer_replace_char (buf, pos, nc, 0, 0); | |
| 1876 ++cnt; | |
| 1877 } | |
| 1878 } | |
| 1879 } | |
| 1880 } | |
| 1881 else | |
| 1882 #endif /* MULE */ | |
| 1883 { | |
| 1884 for (; pos < stop && (oc = BUF_FETCH_CHAR (buf, pos), 1); pos++) | |
| 1885 { | |
| 1886 if (oc < size) | |
| 1887 { | |
| 867 | 1888 Ichar nc = string_ichar (table, oc); |
| 428 | 1889 if (nc != oc) |
| 1890 { | |
| 1891 buffer_replace_char (buf, pos, nc, 0, 0); | |
| 1892 ++cnt; | |
| 1893 } | |
| 1894 } | |
| 1895 } | |
| 1896 } | |
| 1897 } | |
| 1898 else if (VECTORP (table)) | |
| 1899 { | |
| 1900 Charcount size = XVECTOR_LENGTH (table); | |
| 1901 Lisp_Object *vtable = XVECTOR_DATA (table); | |
| 1902 | |
| 1903 for (; pos < stop && (oc = BUF_FETCH_CHAR (buf, pos), 1); pos++) | |
| 1904 { | |
| 1905 if (oc < size) | |
| 1906 { | |
| 1907 Lisp_Object replacement = vtable[oc]; | |
| 1908 retry: | |
| 1909 if (CHAR_OR_CHAR_INTP (replacement)) | |
| 1910 { | |
| 867 | 1911 Ichar nc = XCHAR_OR_CHAR_INT (replacement); |
| 428 | 1912 if (nc != oc) |
| 1913 { | |
| 1914 buffer_replace_char (buf, pos, nc, 0, 0); | |
| 1915 ++cnt; | |
| 1916 } | |
| 1917 } | |
| 1918 else if (STRINGP (replacement)) | |
| 1919 { | |
| 826 | 1920 Charcount incr = string_char_length (replacement) - 1; |
| 428 | 1921 buffer_delete_range (buf, pos, pos + 1, 0); |
| 1922 buffer_insert_lisp_string_1 (buf, pos, replacement, 0); | |
| 1923 pos += incr, stop += incr; | |
| 1924 ++cnt; | |
| 1925 } | |
| 1926 else if (!NILP (replacement)) | |
| 1927 { | |
| 1928 replacement = wrong_type_argument (Qchar_or_string_p, replacement); | |
| 1929 goto retry; | |
| 1930 } | |
| 1931 } | |
| 1932 } | |
| 1933 } | |
| 1934 else if (CHAR_TABLEP (table) | |
| 1935 && (XCHAR_TABLE_TYPE (table) == CHAR_TABLE_TYPE_GENERIC | |
| 1936 || XCHAR_TABLE_TYPE (table) == CHAR_TABLE_TYPE_CHAR)) | |
| 1937 { | |
| 1938 | |
| 1939 for (; pos < stop && (oc = BUF_FETCH_CHAR (buf, pos), 1); pos++) | |
| 1940 { | |
| 826 | 1941 Lisp_Object replacement = get_char_table (oc, table); |
| 428 | 1942 retry2: |
| 1943 if (CHAR_OR_CHAR_INTP (replacement)) | |
| 1944 { | |
| 867 | 1945 Ichar nc = XCHAR_OR_CHAR_INT (replacement); |
| 428 | 1946 if (nc != oc) |
| 1947 { | |
| 1948 buffer_replace_char (buf, pos, nc, 0, 0); | |
| 1949 ++cnt; | |
| 1950 } | |
| 1951 } | |
| 1952 else if (STRINGP (replacement)) | |
| 1953 { | |
| 826 | 1954 Charcount incr = string_char_length (replacement) - 1; |
| 428 | 1955 buffer_delete_range (buf, pos, pos + 1, 0); |
| 1956 buffer_insert_lisp_string_1 (buf, pos, replacement, 0); | |
| 1957 pos += incr, stop += incr; | |
| 1958 ++cnt; | |
| 1959 } | |
| 1960 else if (!NILP (replacement)) | |
| 1961 { | |
| 826 | 1962 replacement = wrong_type_argument (Qchar_or_string_p, |
| 1963 replacement); | |
| 428 | 1964 goto retry2; |
| 1965 } | |
| 1966 } | |
| 1967 } | |
| 1968 else | |
| 1969 dead_wrong_type_argument (Qstringp, table); | |
| 1970 end_multiple_change (buf, mc_count); | |
| 1971 | |
| 1972 return make_int (cnt); | |
| 1973 } | |
| 1974 | |
| 1975 DEFUN ("delete-region", Fdelete_region, 2, 3, "r", /* | |
| 1976 Delete the text between point and mark. | |
| 444 | 1977 When called from a program, expects two arguments START and END |
| 1978 \(integers or markers) specifying the stretch to be deleted. | |
| 1979 If optional third arg BUFFER is nil, the current buffer is assumed. | |
| 428 | 1980 */ |
| 444 | 1981 (start, end, buffer)) |
| 428 | 1982 { |
| 1983 /* This function can GC */ | |
| 826 | 1984 Charbpos char_start, char_end; |
| 428 | 1985 struct buffer *buf = decode_buffer (buffer, 1); |
| 1986 | |
| 826 | 1987 get_buffer_range_char (buf, start, end, &char_start, &char_end, 0); |
| 1988 buffer_delete_range (buf, char_start, char_end, 0); | |
| 428 | 1989 return Qnil; |
| 1990 } | |
| 1991 | |
| 1992 void | |
| 1993 widen_buffer (struct buffer *b, int no_clip) | |
| 1994 { | |
| 1995 if (BUF_BEGV (b) != BUF_BEG (b)) | |
| 1996 { | |
| 1997 clip_changed = 1; | |
| 826 | 1998 SET_BOTH_BUF_BEGV (b, BUF_BEG (b), BYTE_BUF_BEG (b)); |
| 428 | 1999 } |
| 2000 if (BUF_ZV (b) != BUF_Z (b)) | |
| 2001 { | |
| 2002 clip_changed = 1; | |
| 826 | 2003 SET_BOTH_BUF_ZV (b, BUF_Z (b), BYTE_BUF_Z (b)); |
| 428 | 2004 } |
| 2005 if (clip_changed) | |
| 2006 { | |
| 2007 if (!no_clip) | |
| 2008 MARK_CLIP_CHANGED; | |
| 2009 /* Changing the buffer bounds invalidates any recorded current | |
| 2010 column. */ | |
| 2011 invalidate_current_column (); | |
| 2012 narrow_line_number_cache (b); | |
| 2013 } | |
| 2014 } | |
| 2015 | |
| 2016 DEFUN ("widen", Fwiden, 0, 1, "", /* | |
| 2017 Remove restrictions (narrowing) from BUFFER. | |
| 2018 This allows the buffer's full text to be seen and edited. | |
| 2019 If BUFFER is nil, the current buffer is assumed. | |
| 2020 */ | |
| 2021 (buffer)) | |
| 2022 { | |
| 2023 struct buffer *b = decode_buffer (buffer, 1); | |
| 2024 widen_buffer (b, 0); | |
| 2025 return Qnil; | |
| 2026 } | |
| 2027 | |
| 2028 DEFUN ("narrow-to-region", Fnarrow_to_region, 2, 3, "r", /* | |
| 2029 Restrict editing in BUFFER to the current region. | |
| 2030 The rest of the text becomes temporarily invisible and untouchable | |
| 2031 but is not deleted; if you save the buffer in a file, the invisible | |
| 2032 text is included in the file. \\[widen] makes all visible again. | |
| 2033 If BUFFER is nil, the current buffer is assumed. | |
| 2034 See also `save-restriction'. | |
| 2035 | |
| 2036 When calling from a program, pass two arguments; positions (integers | |
| 2037 or markers) bounding the text that should remain visible. | |
| 2038 */ | |
| 444 | 2039 (start, end, buffer)) |
| 428 | 2040 { |
| 826 | 2041 Charbpos char_start, char_end; |
| 428 | 2042 struct buffer *buf = decode_buffer (buffer, 1); |
| 826 | 2043 Bytebpos byte_start, byte_end; |
| 428 | 2044 |
| 826 | 2045 get_buffer_range_char (buf, start, end, &char_start, &char_end, |
| 444 | 2046 GB_ALLOW_PAST_ACCESSIBLE); |
| 826 | 2047 byte_start = charbpos_to_bytebpos (buf, char_start); |
| 2048 byte_end = charbpos_to_bytebpos (buf, char_end); | |
| 428 | 2049 |
| 826 | 2050 SET_BOTH_BUF_BEGV (buf, char_start, byte_start); |
| 2051 SET_BOTH_BUF_ZV (buf, char_end, byte_end); | |
| 2052 if (BUF_PT (buf) < char_start) | |
| 2053 BUF_SET_PT (buf, char_start); | |
| 2054 if (BUF_PT (buf) > char_end) | |
| 2055 BUF_SET_PT (buf, char_end); | |
| 428 | 2056 MARK_CLIP_CHANGED; |
| 2057 /* Changing the buffer bounds invalidates any recorded current column. */ | |
| 2058 invalidate_current_column (); | |
| 2059 narrow_line_number_cache (buf); | |
| 2060 return Qnil; | |
| 2061 } | |
| 2062 | |
| 2063 Lisp_Object | |
| 844 | 2064 save_restriction_save (struct buffer *buf) |
| 428 | 2065 { |
| 844 | 2066 Lisp_Object bottom = noseeum_make_marker (); |
| 2067 Lisp_Object top = noseeum_make_marker (); | |
| 2068 | |
| 2069 /* Formerly, this function remembered the amount of text on either side | |
| 2070 of the restricted area, in a halfway attempt to account for insertion -- | |
| 2071 it handles insertion inside the old restricted area, but not outside. | |
| 2072 The comment read: | |
| 2073 | |
| 2074 [[ Note: I tried using markers here, but it does not win | |
| 428 | 2075 because insertion at the end of the saved region |
| 844 | 2076 does not advance mh and is considered "outside" the saved region. ]] |
| 2077 | |
| 2078 But that was clearly before the advent of marker-insertion-type. --ben */ | |
| 428 | 2079 |
| 844 | 2080 Fset_marker (bottom, make_int (BUF_BEGV (buf)), wrap_buffer (buf)); |
| 2081 Fset_marker (top, make_int (BUF_ZV (buf)), wrap_buffer (buf)); | |
| 2082 Fset_marker_insertion_type (top, Qt); | |
| 2083 | |
| 2084 return noseeum_cons (wrap_buffer (buf), noseeum_cons (bottom, top)); | |
| 428 | 2085 } |
| 2086 | |
| 2087 Lisp_Object | |
| 2088 save_restriction_restore (Lisp_Object data) | |
| 2089 { | |
| 2090 struct buffer *buf; | |
| 844 | 2091 Lisp_Object markers = XCDR (data); |
| 428 | 2092 int local_clip_changed = 0; |
| 2093 | |
| 2094 buf = XBUFFER (XCAR (data)); | |
| 844 | 2095 /* someone could have killed the buffer in the meantime ... */ |
| 2096 if (BUFFER_LIVE_P (buf)) | |
| 428 | 2097 { |
| 844 | 2098 Charbpos start = marker_position (XCAR (markers)); |
| 2099 Charbpos end = marker_position (XCDR (markers)); | |
| 2100 Bytebpos byte_start = charbpos_to_bytebpos (buf, start); | |
| 2101 Bytebpos byte_end = charbpos_to_bytebpos (buf, end); | |
| 428 | 2102 |
| 844 | 2103 if (BUF_BEGV (buf) != start) |
| 2104 { | |
| 2105 local_clip_changed = 1; | |
| 2106 SET_BOTH_BUF_BEGV (buf, start, byte_start); | |
| 2107 narrow_line_number_cache (buf); | |
| 2108 } | |
| 2109 if (BUF_ZV (buf) != end) | |
| 2110 { | |
| 2111 local_clip_changed = 1; | |
| 2112 SET_BOTH_BUF_ZV (buf, end, byte_end); | |
| 2113 } | |
| 428 | 2114 |
| 844 | 2115 if (local_clip_changed) |
| 2116 MARK_CLIP_CHANGED; | |
| 2117 | |
| 2118 /* If point is outside the new visible range, move it inside. */ | |
| 2119 BUF_SET_PT (buf, charbpos_clip_to_bounds (BUF_BEGV (buf), BUF_PT (buf), | |
| 2120 BUF_ZV (buf))); | |
| 428 | 2121 } |
| 2122 | |
| 844 | 2123 /* Free all the junk we allocated, so that a `save-restriction' comes |
| 2124 for free in terms of GC junk. */ | |
| 1204 | 2125 free_marker (XCAR (markers)); |
| 2126 free_marker (XCDR (markers)); | |
| 853 | 2127 free_cons (markers); |
| 2128 free_cons (data); | |
| 428 | 2129 |
| 2130 return Qnil; | |
| 2131 } | |
| 2132 | |
| 2133 DEFUN ("save-restriction", Fsave_restriction, 0, UNEVALLED, 0, /* | |
| 2134 Execute BODY, saving and restoring current buffer's restrictions. | |
| 2135 The buffer's restrictions make parts of the beginning and end invisible. | |
| 2136 \(They are set up with `narrow-to-region' and eliminated with `widen'.) | |
| 2137 This special form, `save-restriction', saves the current buffer's restrictions | |
| 2138 when it is entered, and restores them when it is exited. | |
| 2139 So any `narrow-to-region' within BODY lasts only until the end of the form. | |
| 2140 The old restrictions settings are restored | |
| 2141 even in case of abnormal exit (throw or error). | |
| 2142 | |
| 2143 The value returned is the value of the last form in BODY. | |
| 2144 | |
| 844 | 2145 As of XEmacs 22.0, `save-restriction' correctly handles all modifications |
| 2146 made within BODY. (Formerly, it got confused if, within the BODY, you | |
| 2147 widened and then made changes outside the old restricted area.) | |
| 428 | 2148 |
| 2149 Note: if you are using both `save-excursion' and `save-restriction', | |
| 2150 use `save-excursion' outermost: | |
| 2151 (save-excursion (save-restriction ...)) | |
|
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2152 |
|
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diff
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|
2153 arguments: (&rest BODY) |
| 428 | 2154 */ |
| 2155 (body)) | |
| 2156 { | |
| 2157 /* This function can GC */ | |
| 844 | 2158 int speccount = |
| 2159 record_unwind_protect (save_restriction_restore, | |
| 2160 save_restriction_save (current_buffer)); | |
| 428 | 2161 |
| 771 | 2162 return unbind_to_1 (speccount, Fprogn (body)); |
| 428 | 2163 } |
| 2164 | |
| 2165 | |
| 2166 DEFUN ("format", Fformat, 1, MANY, 0, /* | |
| 2167 Format a string out of a control-string and arguments. | |
| 2168 The first argument is a control string. | |
| 2169 The other arguments are substituted into it to make the result, a string. | |
| 2170 It may contain %-sequences meaning to substitute the next argument. | |
| 2171 %s means print all objects as-is, using `princ'. | |
| 2172 %S means print all objects as s-expressions, using `prin1'. | |
| 2173 %d or %i means print as an integer in decimal (%o octal, %x lowercase hex, | |
|
4329
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|
2174 %X uppercase hex, %b binary). |
| 428 | 2175 %c means print as a single character. |
| 2176 %f means print as a floating-point number in fixed notation (e.g. 785.200). | |
| 2177 %e or %E means print as a floating-point number in scientific notation | |
| 2178 (e.g. 7.85200e+03). | |
| 2179 %g or %G means print as a floating-point number in "pretty format"; | |
| 2180 depending on the number, either %f or %e/%E format will be used, and | |
| 2181 trailing zeroes are removed from the fractional part. | |
| 2182 The argument used for all but %s and %S must be a number. It will be | |
| 2183 converted to an integer or a floating-point number as necessary. | |
| 2184 | |
| 2185 %$ means reposition to read a specific numbered argument; for example, | |
| 2186 %3$s would apply the `%s' to the third argument after the control string, | |
| 2187 and the next format directive would use the fourth argument, the | |
| 2188 following one the fifth argument, etc. (There must be a positive integer | |
| 2189 between the % and the $). | |
| 2190 Zero or more of the flag characters `-', `+', ` ', `0', and `#' may be | |
| 2191 specified between the optional repositioning spec and the conversion | |
| 2192 character; see below. | |
| 2193 An optional minimum field width may be specified after any flag characters | |
| 2194 and before the conversion character; it specifies the minimum number of | |
| 2195 characters that the converted argument will take up. Padding will be | |
| 2196 added on the left (or on the right, if the `-' flag is specified), as | |
| 2197 necessary. Padding is done with spaces, or with zeroes if the `0' flag | |
| 2198 is specified. | |
| 2199 If the field width is specified as `*', the field width is assumed to have | |
| 2200 been specified as an argument. Any repositioning specification that | |
| 2201 would normally specify the argument to be converted will now specify | |
| 2202 where to find this field width argument, not where to find the argument | |
| 2203 to be converted. If there is no repositioning specification, the normal | |
| 2204 next argument is used. The argument to be converted will be the next | |
| 2205 argument after the field width argument unless the precision is also | |
| 2206 specified as `*' (see below). | |
| 2207 | |
| 2208 An optional period character and precision may be specified after any | |
| 2209 minimum field width. It specifies the minimum number of digits to | |
| 2210 appear in %d, %i, %o, %x, and %X conversions (the number is padded | |
| 2211 on the left with zeroes as necessary); the number of digits printed | |
| 2212 after the decimal point for %f, %e, and %E conversions; the number | |
| 2213 of significant digits printed in %g and %G conversions; and the | |
| 2214 maximum number of non-padding characters printed in %s and %S | |
| 2215 conversions. The default precision for floating-point conversions | |
| 2216 is six. | |
| 2217 If the precision is specified as `*', the precision is assumed to have been | |
| 2218 specified as an argument. The argument used will be the next argument | |
| 2219 after the field width argument, if any. If the field width was not | |
| 2220 specified as an argument, any repositioning specification that would | |
| 2221 normally specify the argument to be converted will now specify where to | |
| 2222 find the precision argument. If there is no repositioning specification, | |
| 2223 the normal next argument is used. | |
| 2224 | |
| 2225 The ` ' and `+' flags mean prefix non-negative numbers with a space or | |
| 2226 plus sign, respectively. | |
| 2227 The `#' flag means print numbers in an alternate, more verbose format: | |
| 2228 octal numbers begin with zero; hex numbers begin with a 0x or 0X; | |
| 2229 a decimal point is printed in %f, %e, and %E conversions even if no | |
| 2230 numbers are printed after it; and trailing zeroes are not omitted in | |
| 2231 %g and %G conversions. | |
| 2232 | |
| 2233 Use %% to put a single % into the output. | |
|
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4470
diff
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|
2234 |
|
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parents:
4470
diff
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|
2235 arguments: (CONTROL-STRING &rest ARGS) |
| 428 | 2236 */ |
| 2237 (int nargs, Lisp_Object *args)) | |
| 2238 { | |
| 2239 /* It should not be necessary to GCPRO ARGS, because | |
| 2240 the caller in the interpreter should take care of that. */ | |
| 2241 | |
| 2242 CHECK_STRING (args[0]); | |
| 771 | 2243 return emacs_vsprintf_string_lisp (0, args[0], nargs - 1, args + 1); |
| 428 | 2244 } |
| 2245 | |
| 2246 | |
| 2247 DEFUN ("char-equal", Fchar_equal, 2, 3, 0, /* | |
| 2248 Return t if two characters match, optionally ignoring case. | |
| 2249 Both arguments must be characters (i.e. NOT integers). | |
| 2250 Case is ignored if `case-fold-search' is non-nil in BUFFER. | |
| 2251 If BUFFER is nil, the current buffer is assumed. | |
| 2252 */ | |
| 444 | 2253 (character1, character2, buffer)) |
| 428 | 2254 { |
| 867 | 2255 Ichar x1, x2; |
| 428 | 2256 struct buffer *b = decode_buffer (buffer, 1); |
| 2257 | |
| 444 | 2258 CHECK_CHAR_COERCE_INT (character1); |
| 2259 CHECK_CHAR_COERCE_INT (character2); | |
| 2260 x1 = XCHAR (character1); | |
| 2261 x2 = XCHAR (character2); | |
| 428 | 2262 |
| 2263 return (!NILP (b->case_fold_search) | |
| 2264 ? DOWNCASE (b, x1) == DOWNCASE (b, x2) | |
| 2265 : x1 == x2) | |
| 2266 ? Qt : Qnil; | |
| 2267 } | |
| 2268 | |
| 434 | 2269 DEFUN ("char=", Fchar_Equal, 2, 2, 0, /* |
| 428 | 2270 Return t if two characters match, case is significant. |
| 2271 Both arguments must be characters (i.e. NOT integers). | |
| 2272 */ | |
| 444 | 2273 (character1, character2)) |
| 428 | 2274 { |
| 444 | 2275 CHECK_CHAR_COERCE_INT (character1); |
| 2276 CHECK_CHAR_COERCE_INT (character2); | |
| 428 | 2277 |
| 444 | 2278 return EQ (character1, character2) ? Qt : Qnil; |
| 428 | 2279 } |
| 2280 | |
| 2281 #if 0 /* Undebugged FSFmacs code */ | |
| 2282 /* Transpose the markers in two regions of the current buffer, and | |
| 2283 adjust the ones between them if necessary (i.e.: if the regions | |
| 2284 differ in size). | |
| 2285 | |
| 2286 Traverses the entire marker list of the buffer to do so, adding an | |
| 2287 appropriate amount to some, subtracting from some, and leaving the | |
| 2288 rest untouched. Most of this is copied from adjust_markers in insdel.c. | |
| 2289 | |
| 2290 It's the caller's job to see that (start1 <= end1 <= start2 <= end2). */ | |
| 2291 | |
| 2292 void | |
| 665 | 2293 transpose_markers (Charbpos start1, Charbpos end1, Charbpos start2, Charbpos end2) |
| 428 | 2294 { |
| 2295 Charcount amt1, amt2, diff; | |
| 2296 Lisp_Object marker; | |
| 2297 struct buffer *buf = current_buffer; | |
| 2298 | |
| 2299 /* Update point as if it were a marker. */ | |
| 2300 if (BUF_PT (buf) < start1) | |
| 2301 ; | |
| 2302 else if (BUF_PT (buf) < end1) | |
| 2303 BUF_SET_PT (buf, BUF_PT (buf) + (end2 - end1)); | |
| 2304 else if (BUF_PT (buf) < start2) | |
| 2305 BUF_SET_PT (buf, BUF_PT (buf) + (end2 - start2) - (end1 - start1)); | |
| 2306 else if (BUF_PT (buf) < end2) | |
| 2307 BUF_SET_PT (buf, BUF_PT (buf) - (start2 - start1)); | |
| 2308 | |
| 2309 /* We used to adjust the endpoints here to account for the gap, but that | |
| 2310 isn't good enough. Even if we assume the caller has tried to move the | |
| 2311 gap out of our way, it might still be at start1 exactly, for example; | |
| 2312 and that places it `inside' the interval, for our purposes. The amount | |
| 2313 of adjustment is nontrivial if there's a `denormalized' marker whose | |
| 2314 position is between GPT and GPT + GAP_SIZE, so it's simpler to leave | |
| 2315 the dirty work to Fmarker_position, below. */ | |
| 2316 | |
| 2317 /* The difference between the region's lengths */ | |
| 2318 diff = (end2 - start2) - (end1 - start1); | |
| 2319 | |
| 2320 /* For shifting each marker in a region by the length of the other | |
| 2321 * region plus the distance between the regions. | |
| 2322 */ | |
| 2323 amt1 = (end2 - start2) + (start2 - end1); | |
| 2324 amt2 = (end1 - start1) + (start2 - end1); | |
| 2325 | |
| 2326 for (marker = BUF_MARKERS (buf); !NILP (marker); | |
| 2327 marker = XMARKER (marker)->chain) | |
| 2328 { | |
| 665 | 2329 Charbpos mpos = marker_position (marker); |
| 428 | 2330 if (mpos >= start1 && mpos < end2) |
| 2331 { | |
| 2332 if (mpos < end1) | |
| 2333 mpos += amt1; | |
| 2334 else if (mpos < start2) | |
| 2335 mpos += diff; | |
| 2336 else | |
| 2337 mpos -= amt2; | |
| 2338 set_marker_position (marker, mpos); | |
| 2339 } | |
| 2340 } | |
| 2341 } | |
| 2342 | |
| 2343 #endif /* 0 */ | |
| 2344 | |
| 2345 DEFUN ("transpose-regions", Ftranspose_regions, 4, 5, 0, /* | |
| 2346 Transpose region START1 to END1 with START2 to END2. | |
| 2347 The regions may not be overlapping, because the size of the buffer is | |
| 2348 never changed in a transposition. | |
| 2349 | |
| 444 | 2350 Optional fifth arg LEAVE-MARKERS, if non-nil, means don't transpose |
| 428 | 2351 any markers that happen to be located in the regions. (#### BUG: currently |
| 444 | 2352 this function always acts as if LEAVE-MARKERS is non-nil.) |
| 428 | 2353 |
| 2354 Transposing beyond buffer boundaries is an error. | |
| 2355 */ | |
| 2286 | 2356 (start1, end1, start2, end2, UNUSED (leave_markers))) |
| 428 | 2357 { |
| 665 | 2358 Charbpos startr1, endr1, startr2, endr2; |
| 428 | 2359 Charcount len1, len2; |
| 2360 Lisp_Object string1, string2; | |
| 2361 struct buffer *buf = current_buffer; | |
| 2362 | |
| 444 | 2363 get_buffer_range_char (buf, start1, end1, &startr1, &endr1, 0); |
| 2364 get_buffer_range_char (buf, start2, end2, &startr2, &endr2, 0); | |
| 428 | 2365 |
| 444 | 2366 len1 = endr1 - startr1; |
| 2367 len2 = endr2 - startr2; | |
| 428 | 2368 |
| 444 | 2369 if (startr2 < endr1) |
| 563 | 2370 invalid_argument ("transposed regions not properly ordered", Qunbound); |
| 444 | 2371 else if (startr1 == endr1 || startr2 == endr2) |
| 563 | 2372 invalid_argument ("transposed region may not be of length 0", Qunbound); |
| 428 | 2373 |
| 444 | 2374 string1 = make_string_from_buffer (buf, startr1, len1); |
| 2375 string2 = make_string_from_buffer (buf, startr2, len2); | |
| 2376 buffer_delete_range (buf, startr2, endr2, 0); | |
| 2377 buffer_insert_lisp_string_1 (buf, startr2, string1, 0); | |
| 2378 buffer_delete_range (buf, startr1, endr1, 0); | |
| 2379 buffer_insert_lisp_string_1 (buf, startr1, string2, 0); | |
| 428 | 2380 |
| 2381 /* In FSFmacs there is a whole bunch of really ugly code here | |
| 2382 to attempt to transpose the regions without using up any | |
| 2383 extra memory. Although the intent may be good, the result | |
| 2384 was highly bogus. */ | |
| 2385 | |
| 2386 return Qnil; | |
| 2387 } | |
| 2388 | |
| 2389 | |
| 2390 /************************************************************************/ | |
| 2391 /* initialization */ | |
| 2392 /************************************************************************/ | |
| 2393 | |
| 2394 void | |
| 2395 syms_of_editfns (void) | |
| 2396 { | |
| 563 | 2397 DEFSYMBOL (Qpoint); |
| 2398 DEFSYMBOL (Qmark); | |
| 2399 DEFSYMBOL (Qregion_beginning); | |
| 2400 DEFSYMBOL (Qregion_end); | |
| 2401 DEFSYMBOL (Qformat); | |
| 2402 DEFSYMBOL (Quser_files_and_directories); | |
| 428 | 2403 |
| 2404 DEFSUBR (Fchar_equal); | |
| 2405 DEFSUBR (Fchar_Equal); | |
| 2406 DEFSUBR (Fgoto_char); | |
| 2407 DEFSUBR (Fstring_to_char); | |
| 2408 DEFSUBR (Fchar_to_string); | |
| 2409 DEFSUBR (Fbuffer_substring); | |
| 2410 DEFSUBR (Fbuffer_substring_no_properties); | |
| 2411 | |
| 2412 DEFSUBR (Fpoint_marker); | |
| 2413 DEFSUBR (Fmark_marker); | |
| 2414 DEFSUBR (Fpoint); | |
| 2415 DEFSUBR (Fregion_beginning); | |
| 2416 DEFSUBR (Fregion_end); | |
| 2417 DEFSUBR (Fsave_excursion); | |
| 2418 DEFSUBR (Fsave_current_buffer); | |
| 2419 | |
| 2420 DEFSUBR (Fbuffer_size); | |
| 2421 DEFSUBR (Fpoint_max); | |
| 2422 DEFSUBR (Fpoint_min); | |
| 2423 DEFSUBR (Fpoint_min_marker); | |
| 2424 DEFSUBR (Fpoint_max_marker); | |
| 2425 | |
| 2426 DEFSUBR (Fbobp); | |
| 2427 DEFSUBR (Feobp); | |
| 2428 DEFSUBR (Fbolp); | |
| 2429 DEFSUBR (Feolp); | |
| 2430 DEFSUBR (Ffollowing_char); | |
| 2431 DEFSUBR (Fpreceding_char); | |
| 2432 DEFSUBR (Fchar_after); | |
| 2433 DEFSUBR (Fchar_before); | |
| 2434 DEFSUBR (Finsert); | |
| 2435 DEFSUBR (Finsert_string); | |
| 2436 DEFSUBR (Finsert_before_markers); | |
| 2437 DEFSUBR (Finsert_char); | |
| 2438 | |
| 2439 DEFSUBR (Ftemp_directory); | |
| 2440 DEFSUBR (Fuser_login_name); | |
| 2441 DEFSUBR (Fuser_real_login_name); | |
| 2442 DEFSUBR (Fuser_uid); | |
| 2443 DEFSUBR (Fuser_real_uid); | |
| 2444 DEFSUBR (Fuser_full_name); | |
| 2445 DEFSUBR (Fuser_home_directory); | |
| 2446 DEFSUBR (Femacs_pid); | |
| 2447 DEFSUBR (Fcurrent_time); | |
| 2448 DEFSUBR (Fcurrent_process_time); | |
| 2449 DEFSUBR (Fformat_time_string); | |
| 2450 DEFSUBR (Fdecode_time); | |
| 2451 DEFSUBR (Fencode_time); | |
| 2452 DEFSUBR (Fcurrent_time_string); | |
| 2453 DEFSUBR (Fcurrent_time_zone); | |
| 2454 DEFSUBR (Fset_time_zone_rule); | |
| 2455 DEFSUBR (Fsystem_name); | |
| 2456 DEFSUBR (Fformat); | |
| 2457 | |
| 2458 DEFSUBR (Finsert_buffer_substring); | |
| 2459 DEFSUBR (Fcompare_buffer_substrings); | |
| 2460 DEFSUBR (Fsubst_char_in_region); | |
| 2461 DEFSUBR (Ftranslate_region); | |
| 2462 DEFSUBR (Fdelete_region); | |
| 2463 DEFSUBR (Fwiden); | |
| 2464 DEFSUBR (Fnarrow_to_region); | |
| 2465 DEFSUBR (Fsave_restriction); | |
| 2466 DEFSUBR (Ftranspose_regions); | |
| 2467 | |
| 563 | 2468 DEFSYMBOL (Qzmacs_update_region); |
| 2469 DEFSYMBOL (Qzmacs_deactivate_region); | |
| 2470 DEFSYMBOL (Qzmacs_region_buffer); | |
| 428 | 2471 } |
| 2472 | |
| 2473 void | |
| 2474 vars_of_editfns (void) | |
| 2475 { | |
| 2476 staticpro (&Vsystem_name); | |
| 2477 #if 0 | |
| 2478 staticpro (&Vuser_name); | |
| 2479 staticpro (&Vuser_real_name); | |
| 2480 #endif | |
| 2481 DEFVAR_BOOL ("zmacs-regions", &zmacs_regions /* | |
| 2482 *Whether LISPM-style active regions should be used. | |
| 2483 This means that commands which operate on the region (the area between the | |
| 2484 point and the mark) will only work while the region is in the ``active'' | |
| 2485 state, which is indicated by highlighting. Executing most commands causes | |
| 2486 the region to not be in the active state, so (for example) \\[kill-region] will only | |
| 2487 work immediately after activating the region. | |
| 2488 | |
| 2489 More specifically: | |
| 2490 | |
| 2491 - Commands which operate on the region only work if the region is active. | |
| 2492 - Only a very small set of commands cause the region to become active: | |
| 444 | 2493 Those commands whose semantics are to mark an area, like `mark-defun'. |
| 428 | 2494 - The region is deactivated after each command that is executed, except that: |
| 2495 - "Motion" commands do not change whether the region is active or not. | |
| 2496 | |
| 2497 set-mark-command (C-SPC) pushes a mark and activates the region. Moving the | |
| 2498 cursor with normal motion commands (C-n, C-p, etc) will cause the region | |
| 2499 between point and the recently-pushed mark to be highlighted. It will | |
| 2500 remain highlighted until some non-motion command is executed. | |
| 2501 | |
| 2502 exchange-point-and-mark (\\[exchange-point-and-mark]) activates the region. So if you mark a | |
| 2503 region and execute a command that operates on it, you can reactivate the | |
| 2504 same region with \\[exchange-point-and-mark] (or perhaps \\[exchange-point-and-mark] \\[exchange-point-and-mark]) to operate on it | |
| 2505 again. | |
| 2506 | |
| 2507 Generally, commands which push marks as a means of navigation (like | |
| 2508 beginning-of-buffer and end-of-buffer (M-< and M->)) do not activate the | |
| 2509 region. But commands which push marks as a means of marking an area of | |
| 2510 text (like mark-defun (\\[mark-defun]), mark-word (\\[mark-word]) or mark-whole-buffer (\\[mark-whole-buffer])) | |
| 2511 do activate the region. | |
| 2512 | |
| 2513 The way the command loop actually works with regard to deactivating the | |
| 2514 region is as follows: | |
| 2515 | |
| 2516 - If the variable `zmacs-region-stays' has been set to t during the command | |
| 2517 just executed, the region is left alone (this is how the motion commands | |
| 2518 make the region stay around; see the `_' flag in the `interactive' | |
| 2519 specification). `zmacs-region-stays' is reset to nil before each command | |
| 2520 is executed. | |
| 2521 - If the function `zmacs-activate-region' has been called during the command | |
| 2522 just executed, the region is left alone. Very few functions should | |
| 2523 actually call this function. | |
| 2524 - Otherwise, if the region is active, the region is deactivated and | |
| 2525 the `zmacs-deactivate-region-hook' is called. | |
| 2526 */ ); | |
| 2527 /* Zmacs style active regions are now ON by default */ | |
| 2528 zmacs_regions = 1; | |
| 2529 | |
| 2530 DEFVAR_BOOL ("zmacs-region-active-p", &zmacs_region_active_p /* | |
| 2531 Do not alter this. It is for internal use only. | |
| 2532 */ ); | |
| 2533 zmacs_region_active_p = 0; | |
| 2534 | |
| 2535 DEFVAR_BOOL ("zmacs-region-stays", &zmacs_region_stays /* | |
| 2536 Whether the current command will deactivate the region. | |
| 2537 Commands which do not wish to affect whether the region is currently | |
| 2538 highlighted should set this to t. Normally, the region is turned off after | |
| 2539 executing each command that did not explicitly turn it on with the function | |
| 2540 zmacs-activate-region. Setting this to true lets a command be non-intrusive. | |
| 2541 See the variable `zmacs-regions'. | |
| 2542 | |
| 2543 The same effect can be achieved using the `_' interactive specification. | |
| 442 | 2544 |
| 2545 `zmacs-region-stays' is reset to nil before each command is executed. | |
| 428 | 2546 */ ); |
| 2547 zmacs_region_stays = 0; | |
| 2548 | |
| 2549 DEFVAR_BOOL ("atomic-extent-goto-char-p", &atomic_extent_goto_char_p /* | |
| 2550 Do not use this -- it will be going away soon. | |
| 2551 Indicates if `goto-char' has just been run. This information is allegedly | |
| 2552 needed to get the desired behavior for atomic extents and unfortunately | |
| 2553 is not available by any other means. | |
| 2554 */ ); | |
| 2555 atomic_extent_goto_char_p = 0; | |
| 2556 #ifdef AMPERSAND_FULL_NAME | |
| 771 | 2557 Fprovide (intern ("ampersand-full-name")); |
| 428 | 2558 #endif |
| 2559 | |
| 2560 DEFVAR_LISP ("user-full-name", &Vuser_full_name /* | |
| 2561 *The name of the user. | |
| 4266 | 2562 The function `user-full-name' will return the value of this variable, when |
| 2563 called without arguments. | |
| 428 | 2564 This is initialized to the value of the NAME environment variable. |
| 2565 */ ); | |
| 2566 /* Initialized at run-time. */ | |
| 2567 Vuser_full_name = Qnil; | |
| 2568 } |