Mercurial > hg > xemacs-beta
annotate src/editfns.c @ 5043:d0c14ea98592
various frame-geometry fixes
-------------------- ChangeLog entries follow: --------------------
src/ChangeLog addition:
2010-02-15 Ben Wing <ben@xemacs.org>
* EmacsFrame.c:
* EmacsFrame.c (EmacsFrameResize):
* console-msw-impl.h:
* console-msw-impl.h (struct mswindows_frame):
* console-msw-impl.h (FRAME_MSWINDOWS_TARGET_RECT):
* device-tty.c:
* device-tty.c (tty_asynch_device_change):
* event-msw.c:
* event-msw.c (mswindows_wnd_proc):
* faces.c (Fface_list):
* faces.h:
* frame-gtk.c:
* frame-gtk.c (gtk_set_initial_frame_size):
* frame-gtk.c (gtk_set_frame_size):
* frame-msw.c:
* frame-msw.c (mswindows_init_frame_1):
* frame-msw.c (mswindows_set_frame_size):
* frame-msw.c (mswindows_size_frame_internal):
* frame-msw.c (msprinter_init_frame_3):
* frame.c:
* frame.c (enum):
* frame.c (Fmake_frame):
* frame.c (adjust_frame_size):
* frame.c (store_minibuf_frame_prop):
* frame.c (Fframe_property):
* frame.c (Fframe_properties):
* frame.c (Fframe_displayable_pixel_height):
* frame.c (Fframe_displayable_pixel_width):
* frame.c (internal_set_frame_size):
* frame.c (Fset_frame_height):
* frame.c (Fset_frame_pixel_height):
* frame.c (Fset_frame_displayable_pixel_height):
* frame.c (Fset_frame_width):
* frame.c (Fset_frame_pixel_width):
* frame.c (Fset_frame_displayable_pixel_width):
* frame.c (Fset_frame_size):
* frame.c (Fset_frame_pixel_size):
* frame.c (Fset_frame_displayable_pixel_size):
* frame.c (frame_conversion_internal_1):
* frame.c (get_frame_displayable_pixel_size):
* frame.c (change_frame_size_1):
* frame.c (change_frame_size):
* frame.c (generate_title_string):
* frame.h:
* gtk-xemacs.c:
* gtk-xemacs.c (gtk_xemacs_size_request):
* gtk-xemacs.c (gtk_xemacs_size_allocate):
* gtk-xemacs.c (gtk_xemacs_paint):
* gutter.c:
* gutter.c (update_gutter_geometry):
* redisplay.c (end_hold_frame_size_changes):
* redisplay.c (redisplay_frame):
* toolbar.c:
* toolbar.c (update_frame_toolbars_geometry):
* window.c:
* window.c (frame_pixsize_valid_p):
* window.c (check_frame_size):
Various fixes to frame geometry to make it a bit easier to understand
and fix some bugs.
1. IMPORTANT: Some renamings. Will need to be applied carefully to
the carbon repository, in the following order:
-- pixel_to_char_size -> pixel_to_frame_unit_size
-- char_to_pixel_size -> frame_unit_to_pixel_size
-- pixel_to_real_char_size -> pixel_to_char_size
-- char_to_real_pixel_size -> char_to_pixel_size
-- Reverse second and third arguments of change_frame_size() and
change_frame_size_1() to try to make functions consistent in
putting width before height.
-- Eliminate old round_size_to_char, because it didn't really
do anything differently from round_size_to_real_char()
-- round_size_to_real_char -> round_size_to_char; any places that
called the old round_size_to_char should just call the new one.
2. IMPORTANT FOR CARBON: The set_frame_size() method is now passed
sizes in "frame units", like all other frame-sizing functions,
rather than some hacked-up combination of char-cell units and
total pixel size. This only affects window systems that use
"pixelated geometry", and I'm not sure if Carbon is one of them.
MS Windows is pixelated, X and GTK are not. For pixelated-geometry
systems, the size in set_frame_size() is in displayable pixels
rather than total pixels and needs to be converted appropriately;
take a look at the changes made to mswindows_set_frame_size()
method if necessary.
3. Add a big long comment in frame.c describing how frame geometry
works.
4. Remove MS Windows-specific character height and width fields,
duplicative and unused.
5. frame-displayable-pixel-* and set-frame-displayable-pixel-*
didn't use to work on MS Windows, but they do now.
6. In general, clean up the handling of "pixelated geometry" so
that fewer functions have to worry about this. This is really
an abomination that should be removed entirely but that will
have to happen later. Fix some buggy code in
frame_conversion_internal() that happened to "work" because it
was countered by oppositely buggy code in change_frame_size().
7. Clean up some frame-size code in toolbar.c and use functions
already provided in frame.c instead of rolling its own.
8. Fix check_frame_size() in window.c, which formerly didn't take
pixelated geometry into account.
| author | Ben Wing <ben@xemacs.org> |
|---|---|
| date | Mon, 15 Feb 2010 22:14:11 -0600 |
| parents | 3c3c1d139863 |
| children | 1537701f08a1 |
| rev | line source |
|---|---|
| 428 | 1 /* Lisp functions pertaining to editing. |
| 2 Copyright (C) 1985-1987, 1989, 1992-1995 Free Software Foundation, Inc. | |
| 3 Copyright (C) 1995 Tinker Systems and INS Engineering Corp. | |
| 2367 | 4 Copyright (C) 1996, 2001, 2002, 2004 Ben Wing. |
| 428 | 5 |
| 6 This file is part of XEmacs. | |
| 7 | |
| 8 XEmacs is free software; you can redistribute it and/or modify it | |
| 9 under the terms of the GNU General Public License as published by the | |
| 10 Free Software Foundation; either version 2, or (at your option) any | |
| 11 later version. | |
| 12 | |
| 13 XEmacs is distributed in the hope that it will be useful, but WITHOUT | |
| 14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 16 for more details. | |
| 17 | |
| 18 You should have received a copy of the GNU General Public License | |
| 19 along with XEmacs; see the file COPYING. If not, write to | |
| 20 the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
| 21 Boston, MA 02111-1307, USA. */ | |
| 22 | |
| 23 /* Synched up with: Mule 2.0, FSF 19.30. */ | |
| 24 | |
| 771 | 25 /* This file has been Mule-ized, June 2001. */ |
| 428 | 26 |
| 27 /* Hacked on for Mule by Ben Wing, December 1994. */ | |
| 28 | |
| 29 #include <config.h> | |
| 30 #include "lisp.h" | |
| 31 | |
| 32 #include "buffer.h" | |
| 800 | 33 #include "casetab.h" |
| 34 #include "chartab.h" | |
| 877 | 35 #include "commands.h" /* for zmacs_region functions */ |
| 800 | 36 #include "device.h" |
| 428 | 37 #include "events.h" /* for EVENTP */ |
| 38 #include "frame.h" | |
| 39 #include "insdel.h" | |
| 800 | 40 #include "line-number.h" |
| 872 | 41 #include "process.h" |
| 428 | 42 #include "window.h" |
| 43 | |
| 800 | 44 #include "sysdep.h" |
| 45 #include "sysdir.h" | |
| 46 #include "sysfile.h" | |
| 47 #include "sysproc.h" /* for qxe_getpid() */ | |
| 48 #include "syspwd.h" | |
| 428 | 49 #include "systime.h" |
| 50 | |
| 51 /* Some static data, and a function to initialize it for each run */ | |
| 52 | |
| 53 Lisp_Object Vsystem_name; /* #### - I don't see why this should be */ | |
| 54 /* static, either... --Stig */ | |
| 55 #if 0 /* XEmacs - this is now dynamic */ | |
| 56 /* if at some point it's deemed desirable to | |
| 57 use lisp variables here, then they can be | |
| 58 initialized to nil and then set to their | |
| 59 real values upon the first call to the | |
| 60 functions that generate them. --stig */ | |
| 61 Lisp_Object Vuser_real_login_name; /* login name of current user ID */ | |
| 62 Lisp_Object Vuser_login_name; /* user name from LOGNAME or USER. */ | |
| 63 #endif | |
| 64 | |
| 65 /* It's useful to be able to set this as user customization, so we'll | |
| 66 keep it. */ | |
| 67 Lisp_Object Vuser_full_name; | |
| 68 EXFUN (Fuser_full_name, 1); | |
| 69 | |
| 70 Lisp_Object Qformat; | |
| 71 | |
| 72 Lisp_Object Qpoint, Qmark, Qregion_beginning, Qregion_end; | |
| 73 | |
| 74 Lisp_Object Quser_files_and_directories; | |
| 75 | |
| 76 /* This holds the value of `environ' produced by the previous | |
| 77 call to Fset_time_zone_rule, or 0 if Fset_time_zone_rule | |
| 78 has never been called. */ | |
| 771 | 79 static Extbyte **environbuf; |
| 428 | 80 |
| 81 void | |
| 82 init_editfns (void) | |
| 83 { | |
| 84 /* Only used in removed code below. */ | |
| 867 | 85 Ibyte *p; |
| 428 | 86 |
| 87 environbuf = 0; | |
| 88 | |
| 89 /* Set up system_name even when dumping. */ | |
| 90 init_system_name (); | |
| 91 | |
| 92 if (!initialized) | |
| 93 return; | |
| 94 | |
| 771 | 95 if ((p = egetenv ("NAME"))) |
| 428 | 96 /* I don't think it's the right thing to do the ampersand |
| 97 modification on NAME. Not that it matters anymore... -hniksic */ | |
|
4953
304aebb79cd3
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Ben Wing <ben@xemacs.org>
parents:
4952
diff
changeset
|
98 Vuser_full_name = build_istring (p); |
| 428 | 99 else |
| 100 Vuser_full_name = Fuser_full_name (Qnil); | |
| 101 } | |
| 102 | |
| 103 DEFUN ("char-to-string", Fchar_to_string, 1, 1, 0, /* | |
| 444 | 104 Convert CHARACTER to a one-character string containing that character. |
| 428 | 105 */ |
| 444 | 106 (character)) |
| 428 | 107 { |
| 108 Bytecount len; | |
| 867 | 109 Ibyte str[MAX_ICHAR_LEN]; |
| 428 | 110 |
| 444 | 111 if (EVENTP (character)) |
| 428 | 112 { |
| 2862 | 113 Lisp_Object ch2 = Fevent_to_character (character, Qt, Qnil, Qnil); |
| 428 | 114 if (NILP (ch2)) |
| 563 | 115 invalid_argument |
| 2828 | 116 ("key has no character equivalent:", Fcopy_event (character, Qnil)); |
| 444 | 117 character = ch2; |
| 428 | 118 } |
| 119 | |
| 444 | 120 CHECK_CHAR_COERCE_INT (character); |
| 428 | 121 |
| 867 | 122 len = set_itext_ichar (str, XCHAR (character)); |
| 428 | 123 return make_string (str, len); |
| 124 } | |
| 125 | |
| 126 DEFUN ("string-to-char", Fstring_to_char, 1, 1, 0, /* | |
| 127 Convert arg STRING to a character, the first character of that string. | |
| 128 An empty string will return the constant `nil'. | |
| 129 */ | |
| 444 | 130 (string)) |
| 428 | 131 { |
| 444 | 132 CHECK_STRING (string); |
| 428 | 133 |
| 793 | 134 if (XSTRING_LENGTH (string) != 0) |
| 867 | 135 return make_char (string_ichar (string, 0)); |
| 428 | 136 else |
| 137 /* This used to return Qzero. That is broken, broken, broken. */ | |
| 138 /* It might be kinder to signal an error directly. -slb */ | |
| 139 return Qnil; | |
| 140 } | |
| 141 | |
| 142 | |
| 143 static Lisp_Object | |
| 665 | 144 buildmark (Charbpos val, Lisp_Object buffer) |
| 428 | 145 { |
| 146 Lisp_Object mark = Fmake_marker (); | |
| 147 Fset_marker (mark, make_int (val), buffer); | |
| 148 return mark; | |
| 149 } | |
| 150 | |
| 151 DEFUN ("point", Fpoint, 0, 1, 0, /* | |
| 152 Return value of point, as an integer. | |
| 153 Beginning of buffer is position (point-min). | |
| 154 If BUFFER is nil, the current buffer is assumed. | |
| 155 */ | |
| 156 (buffer)) | |
| 157 { | |
| 158 struct buffer *b = decode_buffer (buffer, 1); | |
| 159 return make_int (BUF_PT (b)); | |
| 160 } | |
| 161 | |
| 162 DEFUN ("point-marker", Fpoint_marker, 0, 2, 0, /* | |
| 163 Return value of point, as a marker object. | |
| 164 This marker is a copy; you may modify it with reckless abandon. | |
| 165 If optional argument DONT-COPY-P is non-nil, then it returns the real | |
| 166 point-marker; modifying the position of this marker will move point. | |
| 167 It is illegal to change the buffer of it, or make it point nowhere. | |
| 168 If BUFFER is nil, the current buffer is assumed. | |
| 169 */ | |
| 170 (dont_copy_p, buffer)) | |
| 171 { | |
| 172 struct buffer *b = decode_buffer (buffer, 1); | |
| 173 if (NILP (dont_copy_p)) | |
| 174 return Fcopy_marker (b->point_marker, Qnil); | |
| 175 else | |
| 176 return b->point_marker; | |
| 177 } | |
| 178 | |
| 179 /* | |
| 180 * Chuck says: | |
| 181 * There is no absolute way to determine if goto-char is the function | |
| 182 * being run. this-command doesn't work because it is often eval'd | |
| 183 * and this-command ends up set to eval-expression. So this flag gets | |
| 184 * added for now. | |
| 185 * | |
| 186 * Jamie thinks he's wrong, but we'll leave this in for now. | |
| 187 */ | |
| 188 int atomic_extent_goto_char_p; | |
| 189 | |
| 190 DEFUN ("goto-char", Fgoto_char, 1, 2, "NGoto char: ", /* | |
| 191 Set point to POSITION, a number or marker. | |
| 192 Beginning of buffer is position (point-min), end is (point-max). | |
| 193 If BUFFER is nil, the current buffer is assumed. | |
| 194 Return value of POSITION, as an integer. | |
| 195 */ | |
| 196 (position, buffer)) | |
| 197 { | |
| 198 struct buffer *b = decode_buffer (buffer, 1); | |
| 665 | 199 Charbpos n = get_buffer_pos_char (b, position, GB_COERCE_RANGE); |
| 428 | 200 BUF_SET_PT (b, n); |
| 201 atomic_extent_goto_char_p = 1; | |
| 202 return make_int (n); | |
| 203 } | |
| 204 | |
| 205 static Lisp_Object | |
| 206 region_limit (int beginningp, struct buffer *b) | |
| 207 { | |
| 208 Lisp_Object m; | |
| 209 | |
| 210 #if 0 /* FSFmacs */ | |
| 211 if (!NILP (Vtransient_mark_mode) && NILP (Vmark_even_if_inactive) | |
| 212 && NILP (b->mark_active)) | |
| 213 Fsignal (Qmark_inactive, Qnil); | |
| 214 #endif | |
| 215 m = Fmarker_position (b->mark); | |
| 563 | 216 if (NILP (m)) invalid_operation ("There is no region now", Qunbound); |
| 428 | 217 if (!!(BUF_PT (b) < XINT (m)) == !!beginningp) |
| 218 return make_int (BUF_PT (b)); | |
| 219 else | |
| 220 return m; | |
| 221 } | |
| 222 | |
| 223 DEFUN ("region-beginning", Fregion_beginning, 0, 1, 0, /* | |
| 224 Return position of beginning of region in BUFFER, as an integer. | |
| 225 If BUFFER is nil, the current buffer is assumed. | |
| 226 */ | |
| 227 (buffer)) | |
| 228 { | |
| 229 return region_limit (1, decode_buffer (buffer, 1)); | |
| 230 } | |
| 231 | |
| 232 DEFUN ("region-end", Fregion_end, 0, 1, 0, /* | |
| 233 Return position of end of region in BUFFER, as an integer. | |
| 234 If BUFFER is nil, the current buffer is assumed. | |
| 235 */ | |
| 236 (buffer)) | |
| 237 { | |
| 238 return region_limit (0, decode_buffer (buffer, 1)); | |
| 239 } | |
| 240 | |
| 241 /* Whether to use lispm-style active-regions */ | |
| 242 int zmacs_regions; | |
| 243 | |
| 244 /* Whether the zmacs region is active. This is not per-buffer because | |
| 245 there can be only one active region at a time. #### Now that the | |
| 246 zmacs region are not directly tied to the X selections this may not | |
| 247 necessarily have to be true. */ | |
| 248 int zmacs_region_active_p; | |
| 249 | |
| 250 int zmacs_region_stays; | |
| 251 | |
| 252 Lisp_Object Qzmacs_update_region, Qzmacs_deactivate_region; | |
| 253 Lisp_Object Qzmacs_region_buffer; | |
| 254 | |
| 255 void | |
| 256 zmacs_update_region (void) | |
| 257 { | |
| 258 /* This function can GC */ | |
| 259 if (zmacs_region_active_p) | |
| 260 call0 (Qzmacs_update_region); | |
| 261 } | |
| 262 | |
| 263 void | |
| 264 zmacs_deactivate_region (void) | |
| 265 { | |
| 266 /* This function can GC */ | |
| 267 if (zmacs_region_active_p) | |
| 268 call0 (Qzmacs_deactivate_region); | |
| 269 } | |
| 270 | |
| 271 Lisp_Object | |
| 272 zmacs_region_buffer (void) | |
| 273 { | |
| 274 if (zmacs_region_active_p) | |
| 275 return call0 (Qzmacs_region_buffer); | |
| 276 else | |
| 277 return Qnil; | |
| 278 } | |
| 279 | |
| 280 DEFUN ("mark-marker", Fmark_marker, 0, 2, 0, /* | |
| 281 Return this buffer's mark, as a marker object. | |
| 282 If `zmacs-regions' is true, then this returns nil unless the region is | |
| 283 currently in the active (highlighted) state. If optional argument FORCE | |
| 284 is t, this returns the mark (if there is one) regardless of the zmacs-region | |
| 285 state. You should *generally* not use the mark unless the region is active, | |
| 286 if the user has expressed a preference for the zmacs-region model. | |
| 287 Watch out! Moving this marker changes the mark position. | |
| 288 If you set the marker not to point anywhere, the buffer will have no mark. | |
| 289 If BUFFER is nil, the current buffer is assumed. | |
| 290 */ | |
| 291 (force, buffer)) | |
| 292 { | |
| 293 struct buffer *b = decode_buffer (buffer, 1); | |
| 294 if (! zmacs_regions || zmacs_region_active_p || !NILP (force)) | |
| 295 return b->mark; | |
| 296 return Qnil; | |
| 297 } | |
| 298 | |
| 299 | |
| 300 /* The saved object is a cons: | |
| 301 | |
| 302 (COPY-OF-POINT-MARKER . COPY-OF-MARK) | |
| 303 | |
| 304 We used to have another cons for a VISIBLE-P element, which was t | |
| 305 if `(eq (current-buffer) (window-buffer (selected-window)))' but it | |
| 306 was unused for a long time, so I removed it. --hniksic */ | |
| 307 Lisp_Object | |
| 308 save_excursion_save (void) | |
| 309 { | |
| 310 struct buffer *b; | |
| 311 | |
| 853 | 312 /* There was once a check for preparing_for_armageddon here, which |
| 313 did nothing; perhaps a left-over from FSF Emacs. Obviously | |
| 314 incorrect. --ben */ | |
| 428 | 315 |
| 800 | 316 #ifdef ERROR_CHECK_TEXT |
| 428 | 317 assert (XINT (Fpoint (Qnil)) == |
| 318 XINT (Fmarker_position (Fpoint_marker (Qt, Qnil)))); | |
| 319 #endif | |
| 320 | |
| 321 b = current_buffer; | |
| 322 | |
| 323 return noseeum_cons (noseeum_copy_marker (b->point_marker, Qnil), | |
| 324 noseeum_copy_marker (b->mark, Qnil)); | |
| 325 } | |
| 326 | |
| 327 Lisp_Object | |
| 328 save_excursion_restore (Lisp_Object info) | |
| 329 { | |
| 330 Lisp_Object buffer = Fmarker_buffer (XCAR (info)); | |
| 331 | |
| 332 /* If buffer being returned to is now deleted, avoid error -- | |
| 333 otherwise could get error here while unwinding to top level and | |
| 334 crash. In that case, Fmarker_buffer returns nil now. */ | |
| 335 if (!NILP (buffer)) | |
| 336 { | |
| 337 struct buffer *buf = XBUFFER (buffer); | |
| 338 struct gcpro gcpro1; | |
| 339 GCPRO1 (info); | |
| 340 set_buffer_internal (buf); | |
| 341 Fgoto_char (XCAR (info), buffer); | |
| 342 Fset_marker (buf->mark, XCDR (info), buffer); | |
| 343 | |
| 344 #if 0 /* We used to make the current buffer visible in the selected window | |
| 345 if that was true previously. That avoids some anomalies. | |
| 346 But it creates others, and it wasn't documented, and it is simpler | |
| 347 and cleaner never to alter the window/buffer connections. */ | |
| 348 /* I'm certain some code somewhere depends on this behavior. --jwz */ | |
| 349 /* Even if it did, it certainly doesn't matter anymore, because | |
| 350 this has been the behavior for countless XEmacs releases | |
| 351 now. --hniksic */ | |
| 352 if (visible | |
| 353 && (current_buffer != XBUFFER (XWINDOW (selected_window)->buffer))) | |
| 354 switch_to_buffer (Fcurrent_buffer (), Qnil); | |
| 355 #endif | |
| 356 | |
| 357 UNGCPRO; | |
| 358 } | |
| 359 | |
| 360 /* Free all the junk we allocated, so that a `save-excursion' comes | |
| 361 for free in terms of GC junk. */ | |
| 1204 | 362 free_marker (XCAR (info)); |
| 363 free_marker (XCDR (info)); | |
| 853 | 364 free_cons (info); |
| 428 | 365 return Qnil; |
| 366 } | |
| 367 | |
| 368 DEFUN ("save-excursion", Fsave_excursion, 0, UNEVALLED, 0, /* | |
| 369 Save point, mark, and current buffer; execute BODY; restore those things. | |
| 370 Executes BODY just like `progn'. | |
| 371 The values of point, mark and the current buffer are restored | |
| 372 even in case of abnormal exit (throw or error). | |
|
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373 |
|
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parents:
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|
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
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Aidan Kehoe <kehoea@parhasard.net>
parents:
4470
diff
changeset
|
400 |
|
80cd90837ac5
Add argument information to remaining MANY or UNEVALLED C subrs.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4470
diff
changeset
|
401 arguments: (&rest BODY) |
| 428 | 402 */ |
| 403 (args)) | |
| 404 { | |
| 405 /* This function can GC */ | |
| 406 int speccount = specpdl_depth (); | |
| 407 | |
| 408 record_unwind_protect (save_current_buffer_restore, Fcurrent_buffer ()); | |
| 409 | |
| 771 | 410 return unbind_to_1 (speccount, Fprogn (args)); |
| 428 | 411 } |
| 412 | |
| 413 DEFUN ("buffer-size", Fbuffer_size, 0, 1, 0, /* | |
| 414 Return the number of characters in BUFFER. | |
| 415 If BUFFER is nil, the current buffer is assumed. | |
| 416 */ | |
| 417 (buffer)) | |
| 418 { | |
| 419 struct buffer *b = decode_buffer (buffer, 1); | |
| 420 return make_int (BUF_SIZE (b)); | |
| 421 } | |
| 422 | |
| 423 DEFUN ("point-min", Fpoint_min, 0, 1, 0, /* | |
| 424 Return the minimum permissible value of point in BUFFER. | |
| 434 | 425 This is 1, unless narrowing (a buffer restriction) |
| 426 is in effect, in which case it may be greater. | |
| 428 | 427 If BUFFER is nil, the current buffer is assumed. |
| 428 */ | |
| 429 (buffer)) | |
| 430 { | |
| 431 struct buffer *b = decode_buffer (buffer, 1); | |
| 432 return make_int (BUF_BEGV (b)); | |
| 433 } | |
| 434 | |
| 435 DEFUN ("point-min-marker", Fpoint_min_marker, 0, 1, 0, /* | |
| 436 Return a marker to the minimum permissible value of point in BUFFER. | |
| 434 | 437 This is the beginning, unless narrowing (a buffer restriction) |
| 438 is in effect, in which case it may be greater. | |
| 428 | 439 If BUFFER is nil, the current buffer is assumed. |
| 440 */ | |
| 441 (buffer)) | |
| 442 { | |
| 443 struct buffer *b = decode_buffer (buffer, 1); | |
| 771 | 444 return buildmark (BUF_BEGV (b), wrap_buffer (b)); |
| 428 | 445 } |
| 446 | |
| 447 DEFUN ("point-max", Fpoint_max, 0, 1, 0, /* | |
| 448 Return the maximum permissible value of point in BUFFER. | |
| 449 This is (1+ (buffer-size)), unless narrowing (a buffer restriction) | |
| 434 | 450 is in effect, in which case it may be less. |
| 428 | 451 If BUFFER is nil, the current buffer is assumed. |
| 452 */ | |
| 453 (buffer)) | |
| 454 { | |
| 455 struct buffer *b = decode_buffer (buffer, 1); | |
| 456 return make_int (BUF_ZV (b)); | |
| 457 } | |
| 458 | |
| 459 DEFUN ("point-max-marker", Fpoint_max_marker, 0, 1, 0, /* | |
| 434 | 460 Return a marker to the maximum permissible value of point in BUFFER. |
| 428 | 461 This is (1+ (buffer-size)), unless narrowing (a buffer restriction) |
| 434 | 462 is in effect, in which case it may be less. |
| 428 | 463 If BUFFER is nil, the current buffer is assumed. |
| 464 */ | |
| 465 (buffer)) | |
| 466 { | |
| 467 struct buffer *b = decode_buffer (buffer, 1); | |
| 771 | 468 return buildmark (BUF_ZV (b), wrap_buffer (b)); |
| 428 | 469 } |
| 470 | |
| 471 DEFUN ("following-char", Ffollowing_char, 0, 1, 0, /* | |
| 472 Return the character following point. | |
| 473 At the end of the buffer or accessible region, return 0. | |
| 474 If BUFFER is nil, the current buffer is assumed. | |
| 475 */ | |
| 476 (buffer)) | |
| 477 { | |
| 478 struct buffer *b = decode_buffer (buffer, 1); | |
| 479 if (BUF_PT (b) >= BUF_ZV (b)) | |
| 480 return Qzero; /* #### Gag me! */ | |
| 481 else | |
| 482 return make_char (BUF_FETCH_CHAR (b, BUF_PT (b))); | |
| 483 } | |
| 484 | |
| 485 DEFUN ("preceding-char", Fpreceding_char, 0, 1, 0, /* | |
| 486 Return the character preceding point. | |
| 487 At the beginning of the buffer or accessible region, return 0. | |
| 488 If BUFFER is nil, the current buffer is assumed. | |
| 489 */ | |
| 490 (buffer)) | |
| 491 { | |
| 492 struct buffer *b = decode_buffer (buffer, 1); | |
| 493 if (BUF_PT (b) <= BUF_BEGV (b)) | |
| 494 return Qzero; /* #### Gag me! */ | |
| 495 else | |
| 496 return make_char (BUF_FETCH_CHAR (b, BUF_PT (b) - 1)); | |
| 497 } | |
| 498 | |
| 499 DEFUN ("bobp", Fbobp, 0, 1, 0, /* | |
| 500 Return t if point is at the beginning of the buffer. | |
| 501 If the buffer is narrowed, this means the beginning of the narrowed part. | |
| 502 If BUFFER is nil, the current buffer is assumed. | |
| 503 */ | |
| 504 (buffer)) | |
| 505 { | |
| 506 struct buffer *b = decode_buffer (buffer, 1); | |
| 507 return BUF_PT (b) == BUF_BEGV (b) ? Qt : Qnil; | |
| 508 } | |
| 509 | |
| 510 DEFUN ("eobp", Feobp, 0, 1, 0, /* | |
| 511 Return t if point is at the end of the buffer. | |
| 512 If the buffer is narrowed, this means the end of the narrowed part. | |
| 513 If BUFFER is nil, the current buffer is assumed. | |
| 514 */ | |
| 515 (buffer)) | |
| 516 { | |
| 517 struct buffer *b = decode_buffer (buffer, 1); | |
| 518 return BUF_PT (b) == BUF_ZV (b) ? Qt : Qnil; | |
| 519 } | |
| 520 | |
| 521 int | |
| 665 | 522 beginning_of_line_p (struct buffer *b, Charbpos pt) |
| 428 | 523 { |
| 524 return pt <= BUF_BEGV (b) || BUF_FETCH_CHAR (b, pt - 1) == '\n'; | |
| 525 } | |
| 526 | |
| 527 | |
| 528 DEFUN ("bolp", Fbolp, 0, 1, 0, /* | |
| 529 Return t if point is at the beginning of a line. | |
| 530 If BUFFER is nil, the current buffer is assumed. | |
| 531 */ | |
| 532 (buffer)) | |
| 533 { | |
| 534 struct buffer *b = decode_buffer (buffer, 1); | |
| 535 return beginning_of_line_p (b, BUF_PT (b)) ? Qt : Qnil; | |
| 536 } | |
| 537 | |
| 538 DEFUN ("eolp", Feolp, 0, 1, 0, /* | |
| 539 Return t if point is at the end of a line. | |
| 540 `End of a line' includes point being at the end of the buffer. | |
| 541 If BUFFER is nil, the current buffer is assumed. | |
| 542 */ | |
| 543 (buffer)) | |
| 544 { | |
| 545 struct buffer *b = decode_buffer (buffer, 1); | |
| 546 return (BUF_PT (b) == BUF_ZV (b) || BUF_FETCH_CHAR (b, BUF_PT (b)) == '\n') | |
| 547 ? Qt : Qnil; | |
| 548 } | |
| 549 | |
| 550 DEFUN ("char-after", Fchar_after, 0, 2, 0, /* | |
| 434 | 551 Return the character at position POS in BUFFER. |
| 552 POS is an integer or a marker. | |
| 428 | 553 If POS is out of range, the value is nil. |
| 434 | 554 if POS is nil, the value of point is assumed. |
| 428 | 555 If BUFFER is nil, the current buffer is assumed. |
| 556 */ | |
| 557 (pos, buffer)) | |
| 558 { | |
| 559 struct buffer *b = decode_buffer (buffer, 1); | |
| 665 | 560 Charbpos n = (NILP (pos) ? BUF_PT (b) : |
| 428 | 561 get_buffer_pos_char (b, pos, GB_NO_ERROR_IF_BAD)); |
| 562 | |
| 563 if (n < 0 || n == BUF_ZV (b)) | |
| 564 return Qnil; | |
| 565 return make_char (BUF_FETCH_CHAR (b, n)); | |
| 566 } | |
| 567 | |
| 568 DEFUN ("char-before", Fchar_before, 0, 2, 0, /* | |
| 434 | 569 Return the character preceding position POS in BUFFER. |
| 570 POS is an integer or a marker. | |
| 428 | 571 If POS is out of range, the value is nil. |
| 434 | 572 if POS is nil, the value of point is assumed. |
| 428 | 573 If BUFFER is nil, the current buffer is assumed. |
| 574 */ | |
| 575 (pos, buffer)) | |
| 576 { | |
| 577 struct buffer *b = decode_buffer (buffer, 1); | |
| 665 | 578 Charbpos n = (NILP (pos) ? BUF_PT (b) : |
| 434 | 579 get_buffer_pos_char (b, pos, GB_NO_ERROR_IF_BAD)); |
| 428 | 580 |
| 581 n--; | |
| 582 | |
| 583 if (n < BUF_BEGV (b)) | |
| 584 return Qnil; | |
| 585 return make_char (BUF_FETCH_CHAR (b, n)); | |
| 586 } | |
| 587 | |
| 588 | |
| 589 DEFUN ("temp-directory", Ftemp_directory, 0, 0, 0, /* | |
| 590 Return the pathname to the directory to use for temporary files. | |
| 442 | 591 On MS Windows, this is obtained from the TEMP or TMP environment variables, |
| 771 | 592 defaulting to c:\\ if they are both undefined. |
| 444 | 593 On Unix it is obtained from TMPDIR, with /tmp as the default. |
| 428 | 594 */ |
| 595 ()) | |
| 596 { | |
| 867 | 597 Ibyte *tmpdir; |
| 442 | 598 #if defined(WIN32_NATIVE) |
| 771 | 599 tmpdir = egetenv ("TEMP"); |
| 428 | 600 if (!tmpdir) |
| 771 | 601 tmpdir = egetenv ("TMP"); |
| 428 | 602 if (!tmpdir) |
| 867 | 603 tmpdir = (Ibyte *) "c:\\"; |
| 442 | 604 #else /* WIN32_NATIVE */ |
| 771 | 605 tmpdir = egetenv ("TMPDIR"); |
| 428 | 606 if (!tmpdir) |
| 442 | 607 { |
| 608 struct stat st; | |
| 771 | 609 int myuid = getuid (); |
| 867 | 610 Ibyte *login_name = user_login_name (NULL); |
| 771 | 611 DECLARE_EISTRING (eipath); |
| 867 | 612 Ibyte *path; |
| 442 | 613 |
| 2421 | 614 eicpy_ascii (eipath, "/tmp/"); |
| 771 | 615 eicat_rawz (eipath, login_name); |
| 616 path = eidata (eipath); | |
| 617 if (qxe_lstat (path, &st) < 0 && errno == ENOENT) | |
| 618 qxe_mkdir (path, 0700); /* ignore retval -- checked next anyway. */ | |
| 619 if (qxe_lstat (path, &st) == 0 && (int) st.st_uid == myuid | |
| 620 && S_ISDIR (st.st_mode)) | |
| 621 tmpdir = path; | |
| 442 | 622 else |
| 623 { | |
| 771 | 624 eicpy_rawz (eipath, egetenv ("HOME")); |
| 2421 | 625 eicat_ascii (eipath, "/tmp/"); |
| 771 | 626 path = eidata (eipath); |
| 627 if (qxe_stat (path, &st) < 0 && errno == ENOENT) | |
| 442 | 628 { |
| 629 int fd; | |
| 771 | 630 DECLARE_EISTRING (eiwarnpath); |
| 631 | |
| 632 qxe_mkdir (path, 0700); /* ignore retvals */ | |
| 633 eicpy_ei (eiwarnpath, eipath); | |
| 2421 | 634 eicat_ascii (eiwarnpath, ".created_by_xemacs"); |
| 771 | 635 if ((fd = qxe_open (eidata (eiwarnpath), |
| 636 O_WRONLY | O_CREAT, 0644)) > 0) | |
| 442 | 637 { |
| 771 | 638 retry_write (fd, "XEmacs created this directory because " |
| 639 "/tmp/<yourname> was unavailable -- \n" | |
| 640 "Please check !\n", 89); | |
| 641 retry_close (fd); | |
| 442 | 642 } |
| 643 } | |
| 771 | 644 if (qxe_stat (path, &st) == 0 && S_ISDIR (st.st_mode)) |
| 645 tmpdir = path; | |
| 442 | 646 else |
| 867 | 647 tmpdir = (Ibyte *) "/tmp"; |
| 442 | 648 } |
| 649 } | |
| 428 | 650 #endif |
| 651 | |
|
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diff
changeset
|
652 return build_istring (tmpdir); |
| 428 | 653 } |
| 654 | |
| 655 DEFUN ("user-login-name", Fuser_login_name, 0, 1, 0, /* | |
| 656 Return the name under which the user logged in, as a string. | |
| 657 This is based on the effective uid, not the real uid. | |
| 658 Also, if the environment variable LOGNAME or USER is set, | |
| 659 that determines the value of this function. | |
| 660 If the optional argument UID is present, then environment variables are | |
| 661 ignored and this function returns the login name for that UID, or nil. | |
| 662 */ | |
| 663 (uid)) | |
| 664 { | |
| 867 | 665 Ibyte *returned_name; |
| 428 | 666 uid_t local_uid; |
| 667 | |
| 668 if (!NILP (uid)) | |
| 669 { | |
| 670 CHECK_INT (uid); | |
| 671 local_uid = XINT (uid); | |
| 672 returned_name = user_login_name (&local_uid); | |
| 673 } | |
| 674 else | |
| 675 { | |
| 676 returned_name = user_login_name (NULL); | |
| 677 } | |
| 678 /* #### - I believe this should return nil instead of "unknown" when pw==0 | |
| 679 pw=0 is indicated by a null return from user_login_name | |
| 680 */ | |
|
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changeset
|
681 return returned_name ? build_istring (returned_name) : Qnil; |
| 428 | 682 } |
| 683 | |
| 684 /* This function may be called from other C routines when a | |
| 685 character string representation of the user_login_name is | |
| 686 needed but a Lisp Object is not. The UID is passed by | |
| 687 reference. If UID == NULL, then the USER name | |
| 688 for the user running XEmacs will be returned. This | |
| 689 corresponds to a nil argument to Fuser_login_name. | |
| 771 | 690 |
| 793 | 691 WARNING: The string returned comes from the data of a Lisp string and |
| 771 | 692 therefore will become garbage after the next GC. |
| 428 | 693 */ |
| 867 | 694 Ibyte * |
| 428 | 695 user_login_name (uid_t *uid) |
| 696 { | |
| 697 /* uid == NULL to return name of this user */ | |
| 698 if (uid != NULL) | |
| 699 { | |
| 771 | 700 struct passwd *pw = qxe_getpwuid (*uid); |
| 867 | 701 return pw ? (Ibyte *) pw->pw_name : NULL; |
| 428 | 702 } |
| 703 else | |
| 704 { | |
| 705 /* #### - when euid != uid, then LOGNAME and USER are leftovers from the | |
| 706 old environment (I site observed behavior on sunos and linux), so the | |
| 707 environment variables should be disregarded in that case. --Stig */ | |
| 867 | 708 Ibyte *user_name = egetenv ("LOGNAME"); |
| 428 | 709 if (!user_name) |
| 771 | 710 user_name = egetenv ( |
| 442 | 711 #ifdef WIN32_NATIVE |
| 428 | 712 "USERNAME" /* it's USERNAME on NT */ |
| 713 #else | |
| 714 "USER" | |
| 715 #endif | |
| 716 ); | |
| 717 if (user_name) | |
| 771 | 718 return user_name; |
| 428 | 719 else |
| 720 { | |
| 771 | 721 struct passwd *pw = qxe_getpwuid (geteuid ()); |
| 442 | 722 #ifdef CYGWIN |
| 428 | 723 /* Since the Cygwin environment may not have an /etc/passwd, |
| 724 return "unknown" instead of the null if the username | |
| 725 cannot be determined. | |
| 726 */ | |
| 593 | 727 /* !!#### fix up in my mule ws */ |
| 867 | 728 return (Ibyte *) (pw ? pw->pw_name : "unknown"); |
| 428 | 729 #else |
| 730 /* For all but Cygwin return NULL (nil) */ | |
| 1204 | 731 return pw ? (Ibyte *) pw->pw_name : NULL; |
| 428 | 732 #endif |
| 733 } | |
| 734 } | |
| 735 } | |
| 736 | |
| 737 DEFUN ("user-real-login-name", Fuser_real_login_name, 0, 0, 0, /* | |
| 738 Return the name of the user's real uid, as a string. | |
| 739 This ignores the environment variables LOGNAME and USER, so it differs from | |
| 740 `user-login-name' when running under `su'. | |
| 741 */ | |
| 742 ()) | |
| 743 { | |
| 771 | 744 struct passwd *pw = qxe_getpwuid (getuid ()); |
| 428 | 745 /* #### - I believe this should return nil instead of "unknown" when pw==0 */ |
| 746 | |
|
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diff
changeset
|
747 return build_extstring (pw ? pw->pw_name : "unknown", Quser_name_encoding); |
| 428 | 748 } |
| 749 | |
| 750 DEFUN ("user-uid", Fuser_uid, 0, 0, 0, /* | |
| 751 Return the effective uid of Emacs, as an integer. | |
| 752 */ | |
| 753 ()) | |
| 754 { | |
| 755 return make_int (geteuid ()); | |
| 756 } | |
| 757 | |
| 758 DEFUN ("user-real-uid", Fuser_real_uid, 0, 0, 0, /* | |
| 759 Return the real uid of Emacs, as an integer. | |
| 760 */ | |
| 761 ()) | |
| 762 { | |
| 763 return make_int (getuid ()); | |
| 764 } | |
| 765 | |
| 766 DEFUN ("user-full-name", Fuser_full_name, 0, 1, 0, /* | |
| 767 Return the full name of the user logged in, as a string. | |
| 768 If the optional argument USER is given, then the full name for that | |
| 769 user is returned, or nil. USER may be either a login name or a uid. | |
| 770 | |
| 771 If USER is nil, and `user-full-name' contains a string, the | |
| 772 value of `user-full-name' is returned. | |
| 773 */ | |
| 774 (user)) | |
| 775 { | |
| 776 Lisp_Object user_name; | |
| 777 struct passwd *pw = NULL; | |
| 778 Lisp_Object tem; | |
| 867 | 779 const Ibyte *p, *q; |
| 428 | 780 |
| 781 if (NILP (user) && STRINGP (Vuser_full_name)) | |
| 782 return Vuser_full_name; | |
| 783 | |
| 784 user_name = (STRINGP (user) ? user : Fuser_login_name (user)); | |
| 785 if (!NILP (user_name)) /* nil when nonexistent UID passed as arg */ | |
| 786 { | |
| 787 /* Fuck me. getpwnam() can call select() and (under IRIX at least) | |
| 788 things get wedged if a SIGIO arrives during this time. */ | |
| 789 slow_down_interrupts (); | |
| 771 | 790 pw = qxe_getpwnam (XSTRING_DATA (user_name)); |
| 428 | 791 speed_up_interrupts (); |
| 792 } | |
| 793 | |
| 794 /* #### - Stig sez: this should return nil instead of "unknown" when pw==0 */ | |
| 795 /* Ben sez: bad idea because it's likely to break something */ | |
| 796 #ifndef AMPERSAND_FULL_NAME | |
| 867 | 797 p = (Ibyte *) (pw ? USER_FULL_NAME : "unknown"); /* don't gettext */ |
| 771 | 798 q = qxestrchr (p, ','); |
| 428 | 799 #else |
| 867 | 800 p = (Ibyte *) (pw ? USER_FULL_NAME : "unknown"); /* don't gettext */ |
| 771 | 801 q = qxestrchr (p, ','); |
| 428 | 802 #endif |
| 803 tem = ((!NILP (user) && !pw) | |
| 804 ? Qnil | |
| 814 | 805 : make_string (p, (q ? (Bytecount) (q - p) : qxestrlen (p)))); |
| 428 | 806 |
| 807 #ifdef AMPERSAND_FULL_NAME | |
| 808 if (!NILP (tem)) | |
| 809 { | |
| 771 | 810 p = XSTRING_DATA (tem); |
| 811 q = qxestrchr (p, '&'); | |
| 428 | 812 /* Substitute the login name for the &, upcasing the first character. */ |
| 813 if (q) | |
| 814 { | |
| 771 | 815 DECLARE_EISTRING (r); |
| 816 eicpy_raw (r, p, q - p); | |
| 817 eicat_lstr (r, user_name); | |
| 818 eisetch (r, q - p, UPCASE (0, eigetch (r, q - p))); | |
| 819 eicat_rawz (r, q + 1); | |
| 820 tem = eimake_string (r); | |
| 428 | 821 } |
| 822 } | |
| 823 #endif /* AMPERSAND_FULL_NAME */ | |
| 824 | |
| 825 return tem; | |
| 826 } | |
| 827 | |
| 867 | 828 static Ibyte *cached_home_directory; |
| 428 | 829 |
| 830 void | |
| 831 uncache_home_directory (void) | |
| 832 { | |
| 771 | 833 if (cached_home_directory) |
|
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Rename xfree(FOO, TYPE) -> xfree(FOO)
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diff
changeset
|
834 xfree (cached_home_directory); |
| 771 | 835 cached_home_directory = NULL; |
| 428 | 836 } |
| 837 | |
| 771 | 838 /* Returns the home directory */ |
| 867 | 839 Ibyte * |
| 428 | 840 get_home_directory (void) |
| 841 { | |
| 842 int output_home_warning = 0; | |
| 843 | |
| 844 if (cached_home_directory == NULL) | |
| 845 { | |
| 771 | 846 cached_home_directory = egetenv ("HOME"); |
| 847 if (cached_home_directory) | |
| 848 cached_home_directory = qxestrdup (cached_home_directory); | |
| 849 else | |
| 428 | 850 { |
| 771 | 851 #if defined (WIN32_NATIVE) |
| 867 | 852 Ibyte *homedrive, *homepath; |
| 428 | 853 |
| 771 | 854 if ((homedrive = egetenv ("HOMEDRIVE")) != NULL && |
| 855 (homepath = egetenv ("HOMEPATH")) != NULL) | |
| 428 | 856 { |
| 857 cached_home_directory = | |
| 2367 | 858 xnew_ibytes (qxestrlen (homedrive) + qxestrlen (homepath) + |
| 859 ITEXT_ZTERM_SIZE); | |
| 771 | 860 qxesprintf (cached_home_directory, "%s%s", |
| 861 homedrive, | |
| 862 homepath); | |
| 428 | 863 } |
| 864 else | |
|
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No need to fatal () on startup if $PWD doesn't exist; chdir to "/" instead.
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diff
changeset
|
865 #endif /* !WIN32_NATIVE */ |
| 428 | 866 { |
|
4733
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No need to fatal () on startup if $PWD doesn't exist; chdir to "/" instead.
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parents:
4693
diff
changeset
|
867 /* Unix, typically. |
|
a5210e70ffbe
No need to fatal () on startup if $PWD doesn't exist; chdir to "/" instead.
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4693
diff
changeset
|
868 Using "/" isn't quite right, but what should we do? |
|
a5210e70ffbe
No need to fatal () on startup if $PWD doesn't exist; chdir to "/" instead.
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parents:
4693
diff
changeset
|
869 We probably should try to extract pw_dir from /etc/passwd, |
|
a5210e70ffbe
No need to fatal () on startup if $PWD doesn't exist; chdir to "/" instead.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4693
diff
changeset
|
870 before falling back to this. */ |
|
4736
d261888e5069
Fix Win32 native build after my DEFAULT_DIRECTORY_FALLBACK change, thanks Vin!
Aidan Kehoe <kehoea@parhasard.net>
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4733
diff
changeset
|
871 cached_home_directory |
|
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parents:
4834
diff
changeset
|
872 = qxestrdup ((const Ibyte *) DEFAULT_DIRECTORY_FALLBACK); |
| 428 | 873 output_home_warning = 1; |
| 874 } | |
| 875 } | |
| 876 if (initialized && output_home_warning) | |
| 877 { | |
| 878 warn_when_safe (Quser_files_and_directories, Qwarning, "\n" | |
| 879 " XEmacs was unable to determine a good value for the user's $HOME\n" | |
| 880 " directory, and will be using the value:\n" | |
| 881 " %s\n" | |
| 882 " This is probably incorrect.", | |
| 883 cached_home_directory | |
| 884 ); | |
| 885 } | |
| 886 } | |
| 887 return cached_home_directory; | |
| 888 } | |
| 889 | |
| 890 DEFUN ("user-home-directory", Fuser_home_directory, 0, 0, 0, /* | |
| 891 Return the user's home directory, as a string. | |
| 892 */ | |
| 893 ()) | |
| 894 { | |
| 867 | 895 Ibyte *path = get_home_directory (); |
| 428 | 896 |
| 771 | 897 return !path ? Qnil : |
|
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|
898 Fexpand_file_name (Fsubstitute_in_file_name (build_istring (path)), |
| 428 | 899 Qnil); |
| 900 } | |
| 901 | |
| 902 DEFUN ("system-name", Fsystem_name, 0, 0, 0, /* | |
| 903 Return the name of the machine you are running on, as a string. | |
| 904 */ | |
| 905 ()) | |
| 906 { | |
| 771 | 907 return Fcopy_sequence (Vsystem_name); |
| 428 | 908 } |
| 909 | |
| 910 DEFUN ("emacs-pid", Femacs_pid, 0, 0, 0, /* | |
| 911 Return the process ID of Emacs, as an integer. | |
| 912 */ | |
| 913 ()) | |
| 914 { | |
| 771 | 915 return make_int (qxe_getpid ()); |
| 428 | 916 } |
| 917 | |
| 918 DEFUN ("current-time", Fcurrent_time, 0, 0, 0, /* | |
| 919 Return the current time, as the number of seconds since 1970-01-01 00:00:00. | |
| 920 The time is returned as a list of three integers. The first has the | |
| 921 most significant 16 bits of the seconds, while the second has the | |
| 922 least significant 16 bits. The third integer gives the microsecond | |
| 923 count. | |
| 924 | |
| 925 The microsecond count is zero on systems that do not provide | |
| 926 resolution finer than a second. | |
| 927 */ | |
| 928 ()) | |
| 929 { | |
| 930 EMACS_TIME t; | |
| 931 | |
| 932 EMACS_GET_TIME (t); | |
| 933 return list3 (make_int ((EMACS_SECS (t) >> 16) & 0xffff), | |
| 934 make_int ((EMACS_SECS (t) >> 0) & 0xffff), | |
| 935 make_int (EMACS_USECS (t))); | |
| 936 } | |
| 937 | |
| 938 DEFUN ("current-process-time", Fcurrent_process_time, 0, 0, 0, /* | |
| 939 Return the amount of time used by this XEmacs process so far. | |
| 940 The return value is a list of three floating-point numbers, expressing | |
| 941 the user, system, and real times used by the process. The user time | |
| 942 measures the time actually spent by the CPU executing the code in this | |
| 943 process. The system time measures time spent by the CPU executing kernel | |
| 944 code on behalf of this process (e.g. I/O requests made by the process). | |
| 945 | |
| 946 Note that the user and system times measure processor time, as opposed | |
| 947 to real time, and only accrue when the processor is actually doing | |
| 948 something: Time spent in an idle wait (waiting for user events to come | |
| 949 in or for I/O on a disk drive or other device to complete) does not | |
| 950 count. Thus, the user and system times will often be considerably | |
| 951 less than the real time. | |
| 952 | |
| 953 Some systems do not allow the user and system times to be distinguished. | |
| 954 In this case, the user time will be the total processor time used by | |
| 955 the process, and the system time will be 0. | |
| 956 | |
| 957 Some systems do not allow the real and processor times to be distinguished. | |
| 958 In this case, the user and real times will be the same and the system | |
| 959 time will be 0. | |
| 960 */ | |
| 961 ()) | |
| 962 { | |
| 963 double user, sys, real; | |
| 964 | |
| 965 get_process_times (&user, &sys, &real); | |
| 966 return list3 (make_float (user), make_float (sys), make_float (real)); | |
| 967 } | |
| 968 | |
| 969 | |
| 970 int lisp_to_time (Lisp_Object specified_time, time_t *result); | |
| 971 int | |
| 972 lisp_to_time (Lisp_Object specified_time, time_t *result) | |
| 973 { | |
| 974 Lisp_Object high, low; | |
| 975 | |
| 976 if (NILP (specified_time)) | |
| 977 return time (result) != -1; | |
| 978 | |
| 979 CHECK_CONS (specified_time); | |
| 980 high = XCAR (specified_time); | |
| 981 low = XCDR (specified_time); | |
| 982 if (CONSP (low)) | |
| 983 low = XCAR (low); | |
| 984 CHECK_INT (high); | |
| 985 CHECK_INT (low); | |
| 986 *result = (XINT (high) << 16) + (XINT (low) & 0xffff); | |
| 987 return *result >> 16 == XINT (high); | |
| 988 } | |
| 989 | |
| 990 Lisp_Object time_to_lisp (time_t the_time); | |
| 991 Lisp_Object | |
| 992 time_to_lisp (time_t the_time) | |
| 993 { | |
| 994 unsigned int item = (unsigned int) the_time; | |
| 995 return Fcons (make_int (item >> 16), make_int (item & 0xffff)); | |
| 996 } | |
| 997 | |
| 771 | 998 size_t emacs_strftime (Extbyte *string, size_t max, const Extbyte *format, |
| 442 | 999 const struct tm *tm); |
| 1000 static long difftm (const struct tm *a, const struct tm *b); | |
| 428 | 1001 |
| 1002 | |
| 1003 DEFUN ("format-time-string", Fformat_time_string, 1, 2, 0, /* | |
| 1004 Use FORMAT-STRING to format the time TIME. | |
| 1005 TIME is specified as (HIGH LOW . IGNORED) or (HIGH . LOW), as from | |
| 1006 `current-time' and `file-attributes'. If TIME is not specified it | |
| 1007 defaults to the current time. | |
| 1008 FORMAT-STRING may contain %-sequences to substitute parts of the time. | |
| 1009 %a is replaced by the abbreviated name of the day of week. | |
| 1010 %A is replaced by the full name of the day of week. | |
| 1011 %b is replaced by the abbreviated name of the month. | |
| 1012 %B is replaced by the full name of the month. | |
| 1013 %c is a synonym for "%x %X". | |
| 1014 %C is a locale-specific synonym, which defaults to "%A, %B %e, %Y" in the C locale. | |
| 1015 %d is replaced by the day of month, zero-padded. | |
| 1016 %D is a synonym for "%m/%d/%y". | |
| 1017 %e is replaced by the day of month, blank-padded. | |
| 4203 | 1018 %G is replaced by the year containing the ISO 8601 week |
| 1019 %g is replaced by the year of the ISO 8601 week within the century (00-99) | |
| 428 | 1020 %h is a synonym for "%b". |
| 1021 %H is replaced by the hour (00-23). | |
| 1022 %I is replaced by the hour (00-12). | |
| 1023 %j is replaced by the day of the year (001-366). | |
| 1024 %k is replaced by the hour (0-23), blank padded. | |
| 1025 %l is replaced by the hour (1-12), blank padded. | |
| 1026 %m is replaced by the month (01-12). | |
| 1027 %M is replaced by the minute (00-59). | |
| 1028 %n is a synonym for "\\n". | |
| 1029 %p is replaced by AM or PM, as appropriate. | |
| 1030 %r is a synonym for "%I:%M:%S %p". | |
| 1031 %R is a synonym for "%H:%M". | |
| 1032 %s is replaced by the time in seconds since 00:00:00, Jan 1, 1970 (a | |
| 1033 nonstandard extension) | |
| 1034 %S is replaced by the second (00-60). | |
| 1035 %t is a synonym for "\\t". | |
| 1036 %T is a synonym for "%H:%M:%S". | |
| 1037 %U is replaced by the week of the year (00-53), first day of week is Sunday. | |
| 4203 | 1038 %V is replaced by the ISO 8601 week number |
| 428 | 1039 %w is replaced by the day of week (0-6), Sunday is day 0. |
| 1040 %W is replaced by the week of the year (00-53), first day of week is Monday. | |
| 1041 %x is a locale-specific synonym, which defaults to "%D" in the C locale. | |
| 1042 %X is a locale-specific synonym, which defaults to "%T" in the C locale. | |
| 1043 %y is replaced by the year without century (00-99). | |
| 1044 %Y is replaced by the year with century. | |
| 4203 | 1045 %z is replaced by the time zone as a numeric offset (e.g +0530, -0800 etc.) |
| 428 | 1046 %Z is replaced by the time zone abbreviation. |
| 1047 | |
| 1048 The number of options reflects the `strftime' function. | |
| 1049 | |
| 1050 BUG: If the charset used by the current locale is not ISO 8859-1, the | |
| 1051 characters appearing in the day and month names may be incorrect. | |
| 1052 */ | |
| 1053 (format_string, time_)) | |
| 1054 { | |
| 1055 time_t value; | |
| 665 | 1056 Bytecount size; |
| 428 | 1057 |
| 1058 CHECK_STRING (format_string); | |
| 1059 | |
| 1060 if (! lisp_to_time (time_, &value)) | |
| 563 | 1061 invalid_argument ("Invalid time specification", Qunbound); |
| 428 | 1062 |
| 1063 /* This is probably enough. */ | |
| 1064 size = XSTRING_LENGTH (format_string) * 6 + 50; | |
| 1065 | |
| 1066 while (1) | |
| 1067 { | |
| 2367 | 1068 Extbyte *buf = alloca_extbytes (size); |
| 771 | 1069 Extbyte *formext; |
| 4203 | 1070 /* make a copy of the static buffer returned by localtime() */ |
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1071 struct tm tm = *localtime (&value); |
| 4203 | 1072 |
| 428 | 1073 *buf = 1; |
| 771 | 1074 |
| 1075 /* !!#### this use of external here is not totally safe, and | |
| 1076 potentially data lossy. */ | |
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1077 formext = LISP_STRING_TO_EXTERNAL (format_string, |
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1078 Qtime_function_encoding); |
| 4203 | 1079 if (emacs_strftime (buf, size, formext, &tm) |
| 428 | 1080 || !*buf) |
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1081 return build_extstring (buf, Qtime_function_encoding); |
| 428 | 1082 /* If buffer was too small, make it bigger. */ |
| 1083 size *= 2; | |
| 1084 } | |
| 1085 } | |
| 1086 | |
| 1087 DEFUN ("decode-time", Fdecode_time, 0, 1, 0, /* | |
| 1088 Decode a time value as (SEC MINUTE HOUR DAY MONTH YEAR DOW DST ZONE). | |
| 1089 The optional SPECIFIED-TIME should be a list of (HIGH LOW . IGNORED) | |
| 1090 or (HIGH . LOW), as from `current-time' and `file-attributes', or `nil' | |
| 1091 to use the current time. The list has the following nine members: | |
| 1092 SEC is an integer between 0 and 60; SEC is 60 for a leap second, which | |
| 1093 only some operating systems support. MINUTE is an integer between 0 and 59. | |
| 1094 HOUR is an integer between 0 and 23. DAY is an integer between 1 and 31. | |
| 1095 MONTH is an integer between 1 and 12. YEAR is an integer indicating the | |
| 1096 four-digit year. DOW is the day of week, an integer between 0 and 6, where | |
| 1097 0 is Sunday. DST is t if daylight savings time is effect, otherwise nil. | |
| 1098 ZONE is an integer indicating the number of seconds east of Greenwich. | |
| 1099 \(Note that Common Lisp has different meanings for DOW and ZONE.) | |
| 1100 */ | |
| 1101 (specified_time)) | |
| 1102 { | |
| 1103 time_t time_spec; | |
| 1104 struct tm save_tm; | |
| 1105 struct tm *decoded_time; | |
| 1106 Lisp_Object list_args[9]; | |
| 1107 | |
| 1108 if (! lisp_to_time (specified_time, &time_spec)) | |
| 563 | 1109 invalid_argument ("Invalid time specification", Qunbound); |
| 428 | 1110 |
| 1111 decoded_time = localtime (&time_spec); | |
| 1112 list_args[0] = make_int (decoded_time->tm_sec); | |
| 1113 list_args[1] = make_int (decoded_time->tm_min); | |
| 1114 list_args[2] = make_int (decoded_time->tm_hour); | |
| 1115 list_args[3] = make_int (decoded_time->tm_mday); | |
| 1116 list_args[4] = make_int (decoded_time->tm_mon + 1); | |
| 1117 list_args[5] = make_int (decoded_time->tm_year + 1900); | |
| 1118 list_args[6] = make_int (decoded_time->tm_wday); | |
| 1119 list_args[7] = (decoded_time->tm_isdst)? Qt : Qnil; | |
| 1120 | |
| 1121 /* Make a copy, in case gmtime modifies the struct. */ | |
| 1122 save_tm = *decoded_time; | |
| 1123 decoded_time = gmtime (&time_spec); | |
| 1124 if (decoded_time == 0) | |
| 1125 list_args[8] = Qnil; | |
| 1126 else | |
| 1127 list_args[8] = make_int (difftm (&save_tm, decoded_time)); | |
| 1128 return Flist (9, list_args); | |
| 1129 } | |
| 1130 | |
| 771 | 1131 static void set_time_zone_rule (Extbyte *tzstring); |
| 428 | 1132 |
| 707 | 1133 /* from GNU Emacs 21, per Simon Josefsson, modified by stephen |
| 1134 The slight inefficiency is justified since negative times are weird. */ | |
| 1135 Lisp_Object | |
| 771 | 1136 make_time (time_t tiempo) |
| 707 | 1137 { |
| 771 | 1138 return list2 (make_int (tiempo < 0 ? tiempo / 0x10000 : tiempo >> 16), |
| 1139 make_int (tiempo & 0xFFFF)); | |
| 707 | 1140 } |
| 1141 | |
| 428 | 1142 DEFUN ("encode-time", Fencode_time, 6, MANY, 0, /* |
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1143 Convert SECOND, MINUTE, HOUR, DAY, MONTH, YEAR and ZONE to internal time. |
| 428 | 1144 This is the reverse operation of `decode-time', which see. |
| 1145 ZONE defaults to the current time zone rule. This can | |
| 1146 be a string (as from `set-time-zone-rule'), or it can be a list | |
| 1147 \(as from `current-time-zone') or an integer (as from `decode-time') | |
| 1148 applied without consideration for daylight savings time. | |
| 1149 | |
| 1150 You can pass more than 7 arguments; then the first six arguments | |
| 1151 are used as SECOND through YEAR, and the *last* argument is used as ZONE. | |
| 1152 The intervening arguments are ignored. | |
| 1153 This feature lets (apply 'encode-time (decode-time ...)) work. | |
| 1154 | |
| 1155 Out-of-range values for SEC, MINUTE, HOUR, DAY, or MONTH are allowed; | |
| 1156 for example, a DAY of 0 means the day preceding the given month. | |
| 1157 Year numbers less than 100 are treated just like other year numbers. | |
| 1158 If you want them to stand for years in this century, you must do that yourself. | |
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1159 |
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1160 arguments: (SECOND MINUTE HOUR DAY MONTH YEAR &optional ZONE &rest REST) |
| 428 | 1161 */ |
| 1162 (int nargs, Lisp_Object *args)) | |
| 1163 { | |
| 1164 time_t the_time; | |
| 1165 struct tm tm; | |
| 1166 Lisp_Object zone = (nargs > 6) ? args[nargs - 1] : Qnil; | |
| 1167 | |
| 1168 CHECK_INT (*args); tm.tm_sec = XINT (*args++); /* second */ | |
| 1169 CHECK_INT (*args); tm.tm_min = XINT (*args++); /* minute */ | |
| 1170 CHECK_INT (*args); tm.tm_hour = XINT (*args++); /* hour */ | |
| 1171 CHECK_INT (*args); tm.tm_mday = XINT (*args++); /* day */ | |
| 1172 CHECK_INT (*args); tm.tm_mon = XINT (*args++) - 1; /* month */ | |
| 1173 CHECK_INT (*args); tm.tm_year = XINT (*args++) - 1900;/* year */ | |
| 1174 | |
| 1175 tm.tm_isdst = -1; | |
| 1176 | |
| 1177 if (CONSP (zone)) | |
| 1178 zone = XCAR (zone); | |
| 1179 if (NILP (zone)) | |
| 1180 the_time = mktime (&tm); | |
| 1181 else | |
| 1182 { | |
| 771 | 1183 /* #### This business of modifying environ is horrendous! |
| 1184 Why don't we just putenv()? Why don't we implement our own | |
| 1185 funs that don't require this futzing? */ | |
| 1186 Extbyte tzbuf[100]; | |
| 1187 Extbyte *tzstring; | |
| 1188 Extbyte **oldenv = environ, **newenv; | |
| 428 | 1189 |
| 1190 if (STRINGP (zone)) | |
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1191 tzstring = LISP_STRING_TO_EXTERNAL (zone, Qtime_zone_encoding); |
| 428 | 1192 else if (INTP (zone)) |
| 1193 { | |
| 1194 int abszone = abs (XINT (zone)); | |
| 1195 sprintf (tzbuf, "XXX%s%d:%02d:%02d", "-" + (XINT (zone) < 0), | |
| 1196 abszone / (60*60), (abszone/60) % 60, abszone % 60); | |
| 1197 tzstring = tzbuf; | |
| 1198 } | |
| 1199 else | |
| 771 | 1200 invalid_argument ("Invalid time zone specification", Qunbound); |
| 428 | 1201 |
| 1202 /* Set TZ before calling mktime; merely adjusting mktime's returned | |
| 1203 value doesn't suffice, since that would mishandle leap seconds. */ | |
| 1204 set_time_zone_rule (tzstring); | |
| 1205 | |
| 1206 the_time = mktime (&tm); | |
| 1207 | |
| 1208 /* Restore TZ to previous value. */ | |
| 1209 newenv = environ; | |
| 1210 environ = oldenv; | |
| 1211 free (newenv); | |
| 1212 #ifdef LOCALTIME_CACHE | |
| 1213 tzset (); | |
| 1214 #endif | |
| 1215 } | |
| 1216 | |
| 1217 if (the_time == (time_t) -1) | |
| 563 | 1218 invalid_argument ("Specified time is not representable", Qunbound); |
| 428 | 1219 |
| 707 | 1220 return make_time (the_time); |
| 428 | 1221 } |
| 1222 | |
| 1223 DEFUN ("current-time-string", Fcurrent_time_string, 0, 1, 0, /* | |
| 1224 Return the current time, as a human-readable string. | |
| 1225 Programs can use this function to decode a time, | |
| 1226 since the number of columns in each field is fixed. | |
| 1227 The format is `Sun Sep 16 01:03:52 1973'. | |
| 1228 If an argument is given, it specifies a time to format | |
| 1229 instead of the current time. The argument should have the form: | |
| 1230 (HIGH . LOW) | |
| 1231 or the form: | |
| 1232 (HIGH LOW . IGNORED). | |
| 1233 Thus, you can use times obtained from `current-time' | |
| 1234 and from `file-attributes'. | |
| 1235 */ | |
| 1236 (specified_time)) | |
| 1237 { | |
| 1238 time_t value; | |
| 867 | 1239 Ibyte *the_ctime; |
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1240 EMACS_INT len; /* this is what make_extstring() accepts; #### |
| 665 | 1241 should it be an Bytecount? */ |
| 428 | 1242 |
| 1243 if (! lisp_to_time (specified_time, &value)) | |
| 1244 value = -1; | |
| 771 | 1245 the_ctime = qxe_ctime (&value); |
| 428 | 1246 |
| 442 | 1247 /* ctime is documented as always returning a "\n\0"-terminated |
| 1248 26-byte American time string, but let's be careful anyways. */ | |
| 1249 for (len = 0; the_ctime[len] != '\n' && the_ctime[len] != '\0'; len++) | |
| 1250 ; | |
| 428 | 1251 |
| 771 | 1252 return make_string (the_ctime, len); |
| 428 | 1253 } |
| 1254 | |
| 1255 #define TM_YEAR_ORIGIN 1900 | |
| 1256 | |
| 1257 /* Yield A - B, measured in seconds. */ | |
| 1258 static long | |
| 442 | 1259 difftm (const struct tm *a, const struct tm *b) |
| 428 | 1260 { |
| 1261 int ay = a->tm_year + (TM_YEAR_ORIGIN - 1); | |
| 1262 int by = b->tm_year + (TM_YEAR_ORIGIN - 1); | |
| 1263 /* Some compilers can't handle this as a single return statement. */ | |
| 1264 long days = ( | |
| 1265 /* difference in day of year */ | |
| 1266 a->tm_yday - b->tm_yday | |
| 1267 /* + intervening leap days */ | |
| 1268 + ((ay >> 2) - (by >> 2)) | |
| 1269 - (ay/100 - by/100) | |
| 1270 + ((ay/100 >> 2) - (by/100 >> 2)) | |
| 1271 /* + difference in years * 365 */ | |
| 1272 + (long)(ay-by) * 365 | |
| 1273 ); | |
| 1274 return (60*(60*(24*days + (a->tm_hour - b->tm_hour)) | |
| 1275 + (a->tm_min - b->tm_min)) | |
| 1276 + (a->tm_sec - b->tm_sec)); | |
| 1277 } | |
| 1278 | |
| 1279 DEFUN ("current-time-zone", Fcurrent_time_zone, 0, 1, 0, /* | |
| 1280 Return the offset and name for the local time zone. | |
| 1281 This returns a list of the form (OFFSET NAME). | |
| 1282 OFFSET is an integer number of seconds ahead of UTC (east of Greenwich). | |
| 1283 A negative value means west of Greenwich. | |
| 1284 NAME is a string giving the name of the time zone. | |
| 1285 If an argument is given, it specifies when the time zone offset is determined | |
| 1286 instead of using the current time. The argument should have the form: | |
| 1287 (HIGH . LOW) | |
| 1288 or the form: | |
| 1289 (HIGH LOW . IGNORED). | |
| 1290 Thus, you can use times obtained from `current-time' | |
| 1291 and from `file-attributes'. | |
| 1292 | |
| 1293 Some operating systems cannot provide all this information to Emacs; | |
| 1294 in this case, `current-time-zone' returns a list containing nil for | |
| 1295 the data it can't find. | |
| 1296 */ | |
| 1297 (specified_time)) | |
| 1298 { | |
| 1299 time_t value; | |
| 1300 struct tm *t = NULL; | |
| 1301 | |
| 1302 if (lisp_to_time (specified_time, &value) | |
| 1303 && (t = gmtime (&value)) != 0) | |
| 1304 { | |
| 1305 struct tm gmt = *t; /* Make a copy, in case localtime modifies *t. */ | |
| 1306 long offset; | |
| 771 | 1307 Extbyte *s; |
| 1308 Lisp_Object tem; | |
| 428 | 1309 |
| 1310 t = localtime (&value); | |
| 1311 offset = difftm (t, &gmt); | |
| 1312 s = 0; | |
| 1313 #ifdef HAVE_TM_ZONE | |
| 1314 if (t->tm_zone) | |
| 771 | 1315 s = (Extbyte *) t->tm_zone; |
| 428 | 1316 #else /* not HAVE_TM_ZONE */ |
| 1317 #ifdef HAVE_TZNAME | |
| 1318 if (t->tm_isdst == 0 || t->tm_isdst == 1) | |
| 1319 s = tzname[t->tm_isdst]; | |
| 1320 #endif | |
| 1321 #endif /* not HAVE_TM_ZONE */ | |
| 771 | 1322 if (s) |
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1323 tem = build_extstring (s, Qtime_zone_encoding); |
| 771 | 1324 else |
| 428 | 1325 { |
| 867 | 1326 Ibyte buf[6]; |
| 771 | 1327 |
| 428 | 1328 /* No local time zone name is available; use "+-NNNN" instead. */ |
| 1329 int am = (offset < 0 ? -offset : offset) / 60; | |
| 771 | 1330 qxesprintf (buf, "%c%02d%02d", (offset < 0 ? '-' : '+'), am/60, |
| 1331 am%60); | |
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1332 tem = build_istring (buf); |
| 428 | 1333 } |
| 771 | 1334 return list2 (make_int (offset), tem); |
| 428 | 1335 } |
| 1336 else | |
| 1337 return list2 (Qnil, Qnil); | |
| 1338 } | |
| 1339 | |
| 1340 #ifdef LOCALTIME_CACHE | |
| 1341 | |
| 1342 /* These two values are known to load tz files in buggy implementations, | |
| 1343 i.e. Solaris 1 executables running under either Solaris 1 or Solaris 2. | |
| 1344 Their values shouldn't matter in non-buggy implementations. | |
| 1345 We don't use string literals for these strings, | |
| 1346 since if a string in the environment is in readonly | |
| 1347 storage, it runs afoul of bugs in SVR4 and Solaris 2.3. | |
| 1348 See Sun bugs 1113095 and 1114114, ``Timezone routines | |
| 1349 improperly modify environment''. */ | |
| 1350 | |
| 2367 | 1351 static Ascbyte set_time_zone_rule_tz1[] = "TZ=GMT+0"; |
| 1352 static Ascbyte set_time_zone_rule_tz2[] = "TZ=GMT+1"; | |
| 428 | 1353 |
| 1354 #endif | |
| 1355 | |
| 1356 /* Set the local time zone rule to TZSTRING. | |
| 1357 This allocates memory into `environ', which it is the caller's | |
| 1358 responsibility to free. */ | |
| 1359 static void | |
| 771 | 1360 set_time_zone_rule (Extbyte *tzstring) |
| 428 | 1361 { |
| 1362 int envptrs; | |
| 771 | 1363 Extbyte **from, **to, **newenv; |
| 428 | 1364 |
| 1365 for (from = environ; *from; from++) | |
| 1366 continue; | |
| 1367 envptrs = from - environ + 2; | |
| 771 | 1368 newenv = to = (Extbyte **) xmalloc (envptrs * sizeof (Extbyte *) |
| 428 | 1369 + (tzstring ? strlen (tzstring) + 4 : 0)); |
| 1370 if (tzstring) | |
| 1371 { | |
| 771 | 1372 Extbyte *t = (Extbyte *) (to + envptrs); |
| 428 | 1373 strcpy (t, "TZ="); |
| 1374 strcat (t, tzstring); | |
| 1375 *to++ = t; | |
| 1376 } | |
| 1377 | |
| 1378 for (from = environ; *from; from++) | |
| 1379 if (strncmp (*from, "TZ=", 3) != 0) | |
| 1380 *to++ = *from; | |
| 1381 *to = 0; | |
| 1382 | |
| 1383 environ = newenv; | |
| 1384 | |
| 1385 #ifdef LOCALTIME_CACHE | |
| 1386 { | |
| 1387 /* In SunOS 4.1.3_U1 and 4.1.4, if TZ has a value like | |
| 1388 "US/Pacific" that loads a tz file, then changes to a value like | |
| 1389 "XXX0" that does not load a tz file, and then changes back to | |
| 1390 its original value, the last change is (incorrectly) ignored. | |
| 1391 Also, if TZ changes twice in succession to values that do | |
| 1392 not load a tz file, tzset can dump core (see Sun bug#1225179). | |
| 1393 The following code works around these bugs. */ | |
| 1394 | |
| 1395 if (tzstring) | |
| 1396 { | |
| 1397 /* Temporarily set TZ to a value that loads a tz file | |
| 1398 and that differs from tzstring. */ | |
| 771 | 1399 Extbyte *tz = *newenv; |
| 428 | 1400 *newenv = (strcmp (tzstring, set_time_zone_rule_tz1 + 3) == 0 |
| 1401 ? set_time_zone_rule_tz2 : set_time_zone_rule_tz1); | |
| 1402 tzset (); | |
| 1403 *newenv = tz; | |
| 1404 } | |
| 1405 else | |
| 1406 { | |
| 1407 /* The implied tzstring is unknown, so temporarily set TZ to | |
| 1408 two different values that each load a tz file. */ | |
| 1409 *to = set_time_zone_rule_tz1; | |
| 1410 to[1] = 0; | |
| 1411 tzset (); | |
| 1412 *to = set_time_zone_rule_tz2; | |
| 1413 tzset (); | |
| 1414 *to = 0; | |
| 1415 } | |
| 1416 | |
| 1417 /* Now TZ has the desired value, and tzset can be invoked safely. */ | |
| 1418 } | |
| 1419 | |
| 1420 tzset (); | |
| 1421 #endif | |
| 1422 } | |
| 1423 | |
| 1424 DEFUN ("set-time-zone-rule", Fset_time_zone_rule, 1, 1, 0, /* | |
| 1425 Set the local time zone using TZ, a string specifying a time zone rule. | |
| 1426 If TZ is nil, use implementation-defined default time zone information. | |
| 1427 */ | |
| 1428 (tz)) | |
| 1429 { | |
| 771 | 1430 Extbyte *tzstring; |
| 428 | 1431 |
| 1432 if (NILP (tz)) | |
| 1433 tzstring = 0; | |
| 1434 else | |
| 1435 { | |
| 1436 CHECK_STRING (tz); | |
|
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Ben Wing <ben@xemacs.org>
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4962
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changeset
|
1437 tzstring = LISP_STRING_TO_EXTERNAL (tz, Qtime_zone_encoding); |
| 428 | 1438 } |
| 1439 | |
| 1440 set_time_zone_rule (tzstring); | |
| 1441 if (environbuf) | |
|
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Rename xfree(FOO, TYPE) -> xfree(FOO)
Ben Wing <ben@xemacs.org>
parents:
4962
diff
changeset
|
1442 xfree (environbuf); |
| 428 | 1443 environbuf = environ; |
| 1444 | |
| 1445 return Qnil; | |
| 1446 } | |
| 1447 | |
| 1448 | |
| 1449 void | |
| 1450 buffer_insert1 (struct buffer *buf, Lisp_Object arg) | |
| 1451 { | |
| 1452 /* This function can GC */ | |
| 1453 struct gcpro gcpro1; | |
| 1454 GCPRO1 (arg); | |
| 1455 retry: | |
| 1456 if (CHAR_OR_CHAR_INTP (arg)) | |
| 1457 { | |
| 1458 buffer_insert_emacs_char (buf, XCHAR_OR_CHAR_INT (arg)); | |
| 1459 } | |
| 1460 else if (STRINGP (arg)) | |
| 1461 { | |
| 1462 buffer_insert_lisp_string (buf, arg); | |
| 1463 } | |
| 1464 else | |
| 1465 { | |
| 1466 arg = wrong_type_argument (Qchar_or_string_p, arg); | |
| 1467 goto retry; | |
| 1468 } | |
| 1469 UNGCPRO; | |
| 1470 } | |
| 1471 | |
| 1472 | |
| 1473 /* Callers passing one argument to Finsert need not gcpro the | |
| 1474 argument "array", since the only element of the array will | |
| 1475 not be used after calling insert_emacs_char or insert_lisp_string, | |
| 1476 so we don't care if it gets trashed. */ | |
| 1477 | |
| 1478 DEFUN ("insert", Finsert, 0, MANY, 0, /* | |
|
4693
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Add argument information to remaining MANY or UNEVALLED C subrs.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4470
diff
changeset
|
1479 Insert ARGS, either strings or characters, at point. |
| 428 | 1480 Point moves forward so that it ends up after the inserted text. |
| 1481 Any other markers at the point of insertion remain before the text. | |
| 1482 If a string has non-null string-extent-data, new extents will be created. | |
|
4693
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Aidan Kehoe <kehoea@parhasard.net>
parents:
4470
diff
changeset
|
1483 |
|
80cd90837ac5
Add argument information to remaining MANY or UNEVALLED C subrs.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4470
diff
changeset
|
1484 arguments: (&rest ARGS) |
| 428 | 1485 */ |
| 1486 (int nargs, Lisp_Object *args)) | |
| 1487 { | |
| 1488 /* This function can GC */ | |
| 1489 REGISTER int argnum; | |
| 1490 | |
| 1491 for (argnum = 0; argnum < nargs; argnum++) | |
| 1492 { | |
| 1493 buffer_insert1 (current_buffer, args[argnum]); | |
| 1494 } | |
| 1495 | |
| 1496 return Qnil; | |
| 1497 } | |
| 1498 | |
| 1499 DEFUN ("insert-before-markers", Finsert_before_markers, 0, MANY, 0, /* | |
| 1500 Insert strings or characters at point, relocating markers after the text. | |
| 1501 Point moves forward so that it ends up after the inserted text. | |
| 1502 Any other markers at the point of insertion also end up after the text. | |
|
4693
80cd90837ac5
Add argument information to remaining MANY or UNEVALLED C subrs.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4470
diff
changeset
|
1503 |
|
80cd90837ac5
Add argument information to remaining MANY or UNEVALLED C subrs.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4470
diff
changeset
|
1504 arguments: (&rest ARGS) |
| 428 | 1505 */ |
| 1506 (int nargs, Lisp_Object *args)) | |
| 1507 { | |
| 1508 /* This function can GC */ | |
| 1509 REGISTER int argnum; | |
| 1510 REGISTER Lisp_Object tem; | |
| 1511 | |
| 1512 for (argnum = 0; argnum < nargs; argnum++) | |
| 1513 { | |
| 1514 tem = args[argnum]; | |
| 1515 retry: | |
| 1516 if (CHAR_OR_CHAR_INTP (tem)) | |
| 1517 { | |
| 1518 buffer_insert_emacs_char_1 (current_buffer, -1, | |
| 1519 XCHAR_OR_CHAR_INT (tem), | |
| 1520 INSDEL_BEFORE_MARKERS); | |
| 1521 } | |
| 1522 else if (STRINGP (tem)) | |
| 1523 { | |
| 1524 buffer_insert_lisp_string_1 (current_buffer, -1, tem, | |
| 1525 INSDEL_BEFORE_MARKERS); | |
| 1526 } | |
| 1527 else | |
| 1528 { | |
| 1529 tem = wrong_type_argument (Qchar_or_string_p, tem); | |
| 1530 goto retry; | |
| 1531 } | |
| 1532 } | |
| 1533 return Qnil; | |
| 1534 } | |
| 1535 | |
| 1536 DEFUN ("insert-string", Finsert_string, 1, 2, 0, /* | |
| 1537 Insert STRING into BUFFER at BUFFER's point. | |
| 1538 Point moves forward so that it ends up after the inserted text. | |
| 1539 Any other markers at the point of insertion remain before the text. | |
| 1540 If a string has non-null string-extent-data, new extents will be created. | |
| 1541 BUFFER defaults to the current buffer. | |
| 1542 */ | |
| 1543 (string, buffer)) | |
| 1544 { | |
| 1545 struct buffer *b = decode_buffer (buffer, 1); | |
| 1546 CHECK_STRING (string); | |
| 1547 buffer_insert_lisp_string (b, string); | |
| 1548 return Qnil; | |
| 1549 } | |
| 1550 | |
| 1551 /* Third argument in FSF is INHERIT: | |
| 1552 | |
| 1553 "The optional third arg INHERIT, if non-nil, says to inherit text properties | |
| 1554 from adjoining text, if those properties are sticky." | |
| 1555 | |
| 1556 Jamie thinks this is bogus. */ | |
| 1557 | |
| 1558 | |
| 1559 DEFUN ("insert-char", Finsert_char, 1, 4, 0, /* | |
| 444 | 1560 Insert COUNT copies of CHARACTER into BUFFER. |
| 428 | 1561 Point and all markers are affected as in the function `insert'. |
| 1562 COUNT defaults to 1 if omitted. | |
| 1563 The optional third arg IGNORED is INHERIT under FSF Emacs. | |
| 1564 This is highly bogus, however, and XEmacs always behaves as if | |
| 1565 `t' were passed to INHERIT. | |
| 1566 The optional fourth arg BUFFER specifies the buffer to insert the | |
| 1567 text into. If BUFFER is nil, the current buffer is assumed. | |
| 1568 */ | |
| 2286 | 1569 (character, count, UNUSED (ignored), buffer)) |
| 428 | 1570 { |
| 1571 /* This function can GC */ | |
| 867 | 1572 REGISTER Ibyte *string; |
| 814 | 1573 REGISTER Bytecount slen; |
| 1574 REGISTER Bytecount i, j; | |
| 428 | 1575 REGISTER Bytecount n; |
| 1576 REGISTER Bytecount charlen; | |
| 867 | 1577 Ibyte str[MAX_ICHAR_LEN]; |
| 428 | 1578 struct buffer *b = decode_buffer (buffer, 1); |
| 1579 int cou; | |
| 1580 | |
| 444 | 1581 CHECK_CHAR_COERCE_INT (character); |
| 428 | 1582 if (NILP (count)) |
| 1583 cou = 1; | |
| 1584 else | |
| 1585 { | |
| 1586 CHECK_INT (count); | |
| 1587 cou = XINT (count); | |
| 1588 } | |
| 1589 | |
| 867 | 1590 charlen = set_itext_ichar (str, XCHAR (character)); |
| 428 | 1591 n = cou * charlen; |
| 1592 if (n <= 0) | |
| 1593 return Qnil; | |
| 814 | 1594 slen = min (n, (Bytecount) 768); |
| 2367 | 1595 string = alloca_ibytes (slen); |
| 428 | 1596 /* Write as many copies of the character into the temp string as will fit. */ |
| 1597 for (i = 0; i + charlen <= slen; i += charlen) | |
| 1598 for (j = 0; j < charlen; j++) | |
| 1599 string[i + j] = str[j]; | |
| 1600 slen = i; | |
| 1601 while (n >= slen) | |
| 1602 { | |
| 1603 buffer_insert_raw_string (b, string, slen); | |
| 1604 n -= slen; | |
| 1605 } | |
| 1606 if (n > 0) | |
| 1607 #if 0 /* FSFmacs bogosity */ | |
| 1608 { | |
| 1609 if (!NILP (inherit)) | |
| 1610 insert_and_inherit (string, n); | |
| 1611 else | |
| 1612 insert (string, n); | |
| 1613 } | |
| 1614 #else | |
| 1615 buffer_insert_raw_string (b, string, n); | |
| 1616 #endif | |
| 1617 | |
| 1618 return Qnil; | |
| 1619 } | |
| 1620 | |
| 1621 | |
| 1622 /* Making strings from buffer contents. */ | |
| 1623 | |
| 1624 DEFUN ("buffer-substring", Fbuffer_substring, 0, 3, 0, /* | |
| 1625 Return the contents of part of BUFFER as a string. | |
| 1626 The two arguments START and END are character positions; | |
| 1627 they can be in either order. If omitted, they default to the beginning | |
| 1628 and end of BUFFER, respectively. | |
| 1629 If there are duplicable extents in the region, the string remembers | |
| 1630 them in its extent data. | |
| 1631 If BUFFER is nil, the current buffer is assumed. | |
| 1632 */ | |
| 1633 (start, end, buffer)) | |
| 1634 { | |
| 1635 /* This function can GC */ | |
| 665 | 1636 Charbpos begv, zv; |
| 428 | 1637 struct buffer *b = decode_buffer (buffer, 1); |
| 1638 | |
| 1639 get_buffer_range_char (b, start, end, &begv, &zv, GB_ALLOW_NIL); | |
| 1640 return make_string_from_buffer (b, begv, zv - begv); | |
| 1641 } | |
| 1642 | |
| 1643 /* It might make more sense to name this | |
| 1644 `buffer-substring-no-extents', but this name is FSFmacs-compatible, | |
| 1645 and what the function does is probably good enough for what the | |
| 1646 user-code will typically want to use it for. */ | |
| 1647 DEFUN ("buffer-substring-no-properties", Fbuffer_substring_no_properties, 0, 3, 0, /* | |
| 444 | 1648 Return the text from START to END as a string, without copying the extents. |
| 428 | 1649 */ |
| 1650 (start, end, buffer)) | |
| 1651 { | |
| 1652 /* This function can GC */ | |
| 665 | 1653 Charbpos begv, zv; |
| 428 | 1654 struct buffer *b = decode_buffer (buffer, 1); |
| 1655 | |
| 1656 get_buffer_range_char (b, start, end, &begv, &zv, GB_ALLOW_NIL); | |
| 1657 return make_string_from_buffer_no_extents (b, begv, zv - begv); | |
| 1658 } | |
| 1659 | |
| 1660 DEFUN ("insert-buffer-substring", Finsert_buffer_substring, 1, 3, 0, /* | |
| 1661 Insert before point a substring of the contents of buffer BUFFER. | |
| 1662 BUFFER may be a buffer or a buffer name. | |
| 1663 Arguments START and END are character numbers specifying the substring. | |
| 1664 They default to the beginning and the end of BUFFER. | |
| 1665 */ | |
| 1666 (buffer, start, end)) | |
| 1667 { | |
| 1668 /* This function can GC */ | |
| 665 | 1669 Charbpos b, e; |
| 428 | 1670 struct buffer *bp; |
| 1671 | |
| 1672 bp = XBUFFER (get_buffer (buffer, 1)); | |
| 1673 get_buffer_range_char (bp, start, end, &b, &e, GB_ALLOW_NIL); | |
| 1674 | |
| 1675 if (b < e) | |
| 1676 buffer_insert_from_buffer (current_buffer, bp, b, e - b); | |
| 1677 | |
| 1678 return Qnil; | |
| 1679 } | |
| 1680 | |
| 1681 DEFUN ("compare-buffer-substrings", Fcompare_buffer_substrings, 6, 6, 0, /* | |
| 1682 Compare two substrings of two buffers; return result as number. | |
| 1683 the value is -N if first string is less after N-1 chars, | |
| 1684 +N if first string is greater after N-1 chars, or 0 if strings match. | |
| 1685 Each substring is represented as three arguments: BUFFER, START and END. | |
| 1686 That makes six args in all, three for each substring. | |
| 1687 | |
| 1688 The value of `case-fold-search' in the current buffer | |
| 1689 determines whether case is significant or ignored. | |
| 1690 */ | |
| 1691 (buffer1, start1, end1, buffer2, start2, end2)) | |
| 1692 { | |
| 665 | 1693 Charbpos begp1, endp1, begp2, endp2; |
| 428 | 1694 REGISTER Charcount len1, len2, length, i; |
| 1695 struct buffer *bp1, *bp2; | |
| 1696 Lisp_Object trt = ((!NILP (current_buffer->case_fold_search)) ? | |
| 446 | 1697 XCASE_TABLE_CANON (current_buffer->case_table) : Qnil); |
| 428 | 1698 |
| 1699 /* Find the first buffer and its substring. */ | |
| 1700 | |
| 1701 bp1 = decode_buffer (buffer1, 1); | |
| 1702 get_buffer_range_char (bp1, start1, end1, &begp1, &endp1, GB_ALLOW_NIL); | |
| 1703 | |
| 1704 /* Likewise for second substring. */ | |
| 1705 | |
| 1706 bp2 = decode_buffer (buffer2, 1); | |
| 1707 get_buffer_range_char (bp2, start2, end2, &begp2, &endp2, GB_ALLOW_NIL); | |
| 1708 | |
| 1709 len1 = endp1 - begp1; | |
| 1710 len2 = endp2 - begp2; | |
| 1711 length = len1; | |
| 1712 if (len2 < length) | |
| 1713 length = len2; | |
| 1714 | |
| 1715 for (i = 0; i < length; i++) | |
| 1716 { | |
| 867 | 1717 Ichar c1 = BUF_FETCH_CHAR (bp1, begp1 + i); |
| 1718 Ichar c2 = BUF_FETCH_CHAR (bp2, begp2 + i); | |
| 428 | 1719 if (!NILP (trt)) |
| 1720 { | |
| 1721 c1 = TRT_TABLE_OF (trt, c1); | |
| 1722 c2 = TRT_TABLE_OF (trt, c2); | |
| 1723 } | |
| 1724 if (c1 < c2) | |
| 1725 return make_int (- 1 - i); | |
| 1726 if (c1 > c2) | |
| 1727 return make_int (i + 1); | |
| 1728 } | |
| 1729 | |
| 1730 /* The strings match as far as they go. | |
| 1731 If one is shorter, that one is less. */ | |
| 1732 if (length < len1) | |
| 1733 return make_int (length + 1); | |
| 1734 else if (length < len2) | |
| 1735 return make_int (- length - 1); | |
| 1736 | |
| 1737 /* Same length too => they are equal. */ | |
| 1738 return Qzero; | |
| 1739 } | |
| 1740 | |
| 1741 | |
| 1742 static Lisp_Object | |
| 1743 subst_char_in_region_unwind (Lisp_Object arg) | |
| 1744 { | |
| 1745 XBUFFER (XCAR (arg))->undo_list = XCDR (arg); | |
| 1746 return Qnil; | |
| 1747 } | |
| 1748 | |
| 1749 static Lisp_Object | |
| 1750 subst_char_in_region_unwind_1 (Lisp_Object arg) | |
| 1751 { | |
| 1752 XBUFFER (XCAR (arg))->filename = XCDR (arg); | |
| 1753 return Qnil; | |
| 1754 } | |
| 1755 | |
| 1756 DEFUN ("subst-char-in-region", Fsubst_char_in_region, 4, 5, 0, /* | |
| 1757 From START to END, replace FROMCHAR with TOCHAR each time it occurs. | |
| 1758 If optional arg NOUNDO is non-nil, don't record this change for undo | |
| 1759 and don't mark the buffer as really changed. | |
| 1760 */ | |
| 1761 (start, end, fromchar, tochar, noundo)) | |
| 1762 { | |
| 1763 /* This function can GC */ | |
| 665 | 1764 Charbpos pos, stop; |
| 867 | 1765 Ichar fromc, toc; |
| 428 | 1766 int mc_count; |
| 1767 struct buffer *buf = current_buffer; | |
| 1768 int count = specpdl_depth (); | |
| 1769 | |
| 1770 get_buffer_range_char (buf, start, end, &pos, &stop, 0); | |
| 1771 CHECK_CHAR_COERCE_INT (fromchar); | |
| 1772 CHECK_CHAR_COERCE_INT (tochar); | |
| 1773 | |
| 1774 fromc = XCHAR (fromchar); | |
| 1775 toc = XCHAR (tochar); | |
| 1776 | |
| 1777 /* If we don't want undo, turn off putting stuff on the list. | |
| 1778 That's faster than getting rid of things, | |
| 1779 and it prevents even the entry for a first change. | |
| 1780 Also inhibit locking the file. */ | |
| 1781 if (!NILP (noundo)) | |
| 1782 { | |
| 1783 record_unwind_protect (subst_char_in_region_unwind, | |
| 1784 Fcons (Fcurrent_buffer (), buf->undo_list)); | |
| 1785 buf->undo_list = Qt; | |
| 1786 /* Don't do file-locking. */ | |
| 1787 record_unwind_protect (subst_char_in_region_unwind_1, | |
| 1788 Fcons (Fcurrent_buffer (), buf->filename)); | |
| 1789 buf->filename = Qnil; | |
| 1790 } | |
| 1791 | |
| 1792 mc_count = begin_multiple_change (buf, pos, stop); | |
| 1793 while (pos < stop) | |
| 1794 { | |
| 1795 if (BUF_FETCH_CHAR (buf, pos) == fromc) | |
| 1796 { | |
| 1797 /* There used to be some code here that set the buffer to | |
| 1798 unmodified if NOUNDO was specified and there was only | |
| 1799 one change to the buffer since it was last saved. | |
| 1800 This is a crock of shit, so I'm not duplicating this | |
| 1801 behavior. I think this was left over from when | |
| 1802 prepare_to_modify_buffer() actually bumped MODIFF, | |
| 1803 so that code was supposed to undo this change. --ben */ | |
| 1804 buffer_replace_char (buf, pos, toc, !NILP (noundo), 0); | |
| 1805 | |
| 1806 /* If noundo is not nil then we don't mark the buffer as | |
| 1807 modified. In reality that needs to happen externally | |
| 1808 only. Internally redisplay needs to know that the actual | |
| 1809 contents it should be displaying have changed. */ | |
| 1810 if (!NILP (noundo)) | |
| 1811 Fset_buffer_modified_p (Fbuffer_modified_p (Qnil), Qnil); | |
| 1812 } | |
| 1813 pos++; | |
| 1814 } | |
| 1815 end_multiple_change (buf, mc_count); | |
| 1816 | |
| 771 | 1817 unbind_to (count); |
| 428 | 1818 return Qnil; |
| 1819 } | |
| 1820 | |
| 1821 /* #### Shouldn't this also accept a BUFFER argument, in the good old | |
| 1822 XEmacs tradition? */ | |
| 1823 DEFUN ("translate-region", Ftranslate_region, 3, 3, 0, /* | |
| 1824 Translate characters from START to END according to TABLE. | |
| 1825 | |
| 1826 If TABLE is a string, the Nth character in it is the mapping for the | |
| 1827 character with code N. | |
| 1828 | |
| 1829 If TABLE is a vector, its Nth element is the mapping for character | |
| 1830 with code N. The values of elements may be characters, strings, or | |
| 1831 nil (nil meaning don't replace.) | |
| 1832 | |
| 1833 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
|
1834 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
|
1835 or `generic'. If the value given by `get-char-table' for a given character |
|
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Fill out docstrings for #'translate-region, #'make-char-table.
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parents:
4329
diff
changeset
|
1836 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
|
1837 `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
|
1838 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
|
1839 not all of them, the most generally useful table type here is `generic'. |
| 428 | 1840 |
| 1841 Returns the number of substitutions performed. | |
| 1842 */ | |
| 1843 (start, end, table)) | |
| 1844 { | |
| 1845 /* This function can GC */ | |
| 665 | 1846 Charbpos pos, stop; /* Limits of the region. */ |
| 428 | 1847 int cnt = 0; /* Number of changes made. */ |
| 1848 int mc_count; | |
| 1849 struct buffer *buf = current_buffer; | |
| 867 | 1850 Ichar oc; |
| 428 | 1851 |
| 1852 get_buffer_range_char (buf, start, end, &pos, &stop, 0); | |
| 1853 mc_count = begin_multiple_change (buf, pos, stop); | |
| 1854 if (STRINGP (table)) | |
| 1855 { | |
| 826 | 1856 Charcount size = string_char_length (table); |
| 428 | 1857 #ifdef MULE |
| 867 | 1858 /* Under Mule, string_ichar(n) is O(n), so for large tables or |
| 1859 large regions it makes sense to create an array of Ichars. */ | |
| 428 | 1860 if (size * (stop - pos) > 65536) |
| 1861 { | |
| 867 | 1862 Ichar *etable = alloca_array (Ichar, size); |
| 1863 convert_ibyte_string_into_ichar_string | |
| 793 | 1864 (XSTRING_DATA (table), XSTRING_LENGTH (table), etable); |
| 428 | 1865 for (; pos < stop && (oc = BUF_FETCH_CHAR (buf, pos), 1); pos++) |
| 1866 { | |
| 1867 if (oc < size) | |
| 1868 { | |
| 867 | 1869 Ichar nc = etable[oc]; |
| 428 | 1870 if (nc != oc) |
| 1871 { | |
| 1872 buffer_replace_char (buf, pos, nc, 0, 0); | |
| 1873 ++cnt; | |
| 1874 } | |
| 1875 } | |
| 1876 } | |
| 1877 } | |
| 1878 else | |
| 1879 #endif /* MULE */ | |
| 1880 { | |
| 1881 for (; pos < stop && (oc = BUF_FETCH_CHAR (buf, pos), 1); pos++) | |
| 1882 { | |
| 1883 if (oc < size) | |
| 1884 { | |
| 867 | 1885 Ichar nc = string_ichar (table, oc); |
| 428 | 1886 if (nc != oc) |
| 1887 { | |
| 1888 buffer_replace_char (buf, pos, nc, 0, 0); | |
| 1889 ++cnt; | |
| 1890 } | |
| 1891 } | |
| 1892 } | |
| 1893 } | |
| 1894 } | |
| 1895 else if (VECTORP (table)) | |
| 1896 { | |
| 1897 Charcount size = XVECTOR_LENGTH (table); | |
| 1898 Lisp_Object *vtable = XVECTOR_DATA (table); | |
| 1899 | |
| 1900 for (; pos < stop && (oc = BUF_FETCH_CHAR (buf, pos), 1); pos++) | |
| 1901 { | |
| 1902 if (oc < size) | |
| 1903 { | |
| 1904 Lisp_Object replacement = vtable[oc]; | |
| 1905 retry: | |
| 1906 if (CHAR_OR_CHAR_INTP (replacement)) | |
| 1907 { | |
| 867 | 1908 Ichar nc = XCHAR_OR_CHAR_INT (replacement); |
| 428 | 1909 if (nc != oc) |
| 1910 { | |
| 1911 buffer_replace_char (buf, pos, nc, 0, 0); | |
| 1912 ++cnt; | |
| 1913 } | |
| 1914 } | |
| 1915 else if (STRINGP (replacement)) | |
| 1916 { | |
| 826 | 1917 Charcount incr = string_char_length (replacement) - 1; |
| 428 | 1918 buffer_delete_range (buf, pos, pos + 1, 0); |
| 1919 buffer_insert_lisp_string_1 (buf, pos, replacement, 0); | |
| 1920 pos += incr, stop += incr; | |
| 1921 ++cnt; | |
| 1922 } | |
| 1923 else if (!NILP (replacement)) | |
| 1924 { | |
| 1925 replacement = wrong_type_argument (Qchar_or_string_p, replacement); | |
| 1926 goto retry; | |
| 1927 } | |
| 1928 } | |
| 1929 } | |
| 1930 } | |
| 1931 else if (CHAR_TABLEP (table) | |
| 1932 && (XCHAR_TABLE_TYPE (table) == CHAR_TABLE_TYPE_GENERIC | |
| 1933 || XCHAR_TABLE_TYPE (table) == CHAR_TABLE_TYPE_CHAR)) | |
| 1934 { | |
| 1935 | |
| 1936 for (; pos < stop && (oc = BUF_FETCH_CHAR (buf, pos), 1); pos++) | |
| 1937 { | |
| 826 | 1938 Lisp_Object replacement = get_char_table (oc, table); |
| 428 | 1939 retry2: |
| 1940 if (CHAR_OR_CHAR_INTP (replacement)) | |
| 1941 { | |
| 867 | 1942 Ichar nc = XCHAR_OR_CHAR_INT (replacement); |
| 428 | 1943 if (nc != oc) |
| 1944 { | |
| 1945 buffer_replace_char (buf, pos, nc, 0, 0); | |
| 1946 ++cnt; | |
| 1947 } | |
| 1948 } | |
| 1949 else if (STRINGP (replacement)) | |
| 1950 { | |
| 826 | 1951 Charcount incr = string_char_length (replacement) - 1; |
| 428 | 1952 buffer_delete_range (buf, pos, pos + 1, 0); |
| 1953 buffer_insert_lisp_string_1 (buf, pos, replacement, 0); | |
| 1954 pos += incr, stop += incr; | |
| 1955 ++cnt; | |
| 1956 } | |
| 1957 else if (!NILP (replacement)) | |
| 1958 { | |
| 826 | 1959 replacement = wrong_type_argument (Qchar_or_string_p, |
| 1960 replacement); | |
| 428 | 1961 goto retry2; |
| 1962 } | |
| 1963 } | |
| 1964 } | |
| 1965 else | |
| 1966 dead_wrong_type_argument (Qstringp, table); | |
| 1967 end_multiple_change (buf, mc_count); | |
| 1968 | |
| 1969 return make_int (cnt); | |
| 1970 } | |
| 1971 | |
| 1972 DEFUN ("delete-region", Fdelete_region, 2, 3, "r", /* | |
| 1973 Delete the text between point and mark. | |
| 444 | 1974 When called from a program, expects two arguments START and END |
| 1975 \(integers or markers) specifying the stretch to be deleted. | |
| 1976 If optional third arg BUFFER is nil, the current buffer is assumed. | |
| 428 | 1977 */ |
| 444 | 1978 (start, end, buffer)) |
| 428 | 1979 { |
| 1980 /* This function can GC */ | |
| 826 | 1981 Charbpos char_start, char_end; |
| 428 | 1982 struct buffer *buf = decode_buffer (buffer, 1); |
| 1983 | |
| 826 | 1984 get_buffer_range_char (buf, start, end, &char_start, &char_end, 0); |
| 1985 buffer_delete_range (buf, char_start, char_end, 0); | |
| 428 | 1986 return Qnil; |
| 1987 } | |
| 1988 | |
| 1989 void | |
| 1990 widen_buffer (struct buffer *b, int no_clip) | |
| 1991 { | |
| 1992 if (BUF_BEGV (b) != BUF_BEG (b)) | |
| 1993 { | |
| 1994 clip_changed = 1; | |
| 826 | 1995 SET_BOTH_BUF_BEGV (b, BUF_BEG (b), BYTE_BUF_BEG (b)); |
| 428 | 1996 } |
| 1997 if (BUF_ZV (b) != BUF_Z (b)) | |
| 1998 { | |
| 1999 clip_changed = 1; | |
| 826 | 2000 SET_BOTH_BUF_ZV (b, BUF_Z (b), BYTE_BUF_Z (b)); |
| 428 | 2001 } |
| 2002 if (clip_changed) | |
| 2003 { | |
| 2004 if (!no_clip) | |
| 2005 MARK_CLIP_CHANGED; | |
| 2006 /* Changing the buffer bounds invalidates any recorded current | |
| 2007 column. */ | |
| 2008 invalidate_current_column (); | |
| 2009 narrow_line_number_cache (b); | |
| 2010 } | |
| 2011 } | |
| 2012 | |
| 2013 DEFUN ("widen", Fwiden, 0, 1, "", /* | |
| 2014 Remove restrictions (narrowing) from BUFFER. | |
| 2015 This allows the buffer's full text to be seen and edited. | |
| 2016 If BUFFER is nil, the current buffer is assumed. | |
| 2017 */ | |
| 2018 (buffer)) | |
| 2019 { | |
| 2020 struct buffer *b = decode_buffer (buffer, 1); | |
| 2021 widen_buffer (b, 0); | |
| 2022 return Qnil; | |
| 2023 } | |
| 2024 | |
| 2025 DEFUN ("narrow-to-region", Fnarrow_to_region, 2, 3, "r", /* | |
| 2026 Restrict editing in BUFFER to the current region. | |
| 2027 The rest of the text becomes temporarily invisible and untouchable | |
| 2028 but is not deleted; if you save the buffer in a file, the invisible | |
| 2029 text is included in the file. \\[widen] makes all visible again. | |
| 2030 If BUFFER is nil, the current buffer is assumed. | |
| 2031 See also `save-restriction'. | |
| 2032 | |
| 2033 When calling from a program, pass two arguments; positions (integers | |
| 2034 or markers) bounding the text that should remain visible. | |
| 2035 */ | |
| 444 | 2036 (start, end, buffer)) |
| 428 | 2037 { |
| 826 | 2038 Charbpos char_start, char_end; |
| 428 | 2039 struct buffer *buf = decode_buffer (buffer, 1); |
| 826 | 2040 Bytebpos byte_start, byte_end; |
| 428 | 2041 |
| 826 | 2042 get_buffer_range_char (buf, start, end, &char_start, &char_end, |
| 444 | 2043 GB_ALLOW_PAST_ACCESSIBLE); |
| 826 | 2044 byte_start = charbpos_to_bytebpos (buf, char_start); |
| 2045 byte_end = charbpos_to_bytebpos (buf, char_end); | |
| 428 | 2046 |
| 826 | 2047 SET_BOTH_BUF_BEGV (buf, char_start, byte_start); |
| 2048 SET_BOTH_BUF_ZV (buf, char_end, byte_end); | |
| 2049 if (BUF_PT (buf) < char_start) | |
| 2050 BUF_SET_PT (buf, char_start); | |
| 2051 if (BUF_PT (buf) > char_end) | |
| 2052 BUF_SET_PT (buf, char_end); | |
| 428 | 2053 MARK_CLIP_CHANGED; |
| 2054 /* Changing the buffer bounds invalidates any recorded current column. */ | |
| 2055 invalidate_current_column (); | |
| 2056 narrow_line_number_cache (buf); | |
| 2057 return Qnil; | |
| 2058 } | |
| 2059 | |
| 2060 Lisp_Object | |
| 844 | 2061 save_restriction_save (struct buffer *buf) |
| 428 | 2062 { |
| 844 | 2063 Lisp_Object bottom = noseeum_make_marker (); |
| 2064 Lisp_Object top = noseeum_make_marker (); | |
| 2065 | |
| 2066 /* Formerly, this function remembered the amount of text on either side | |
| 2067 of the restricted area, in a halfway attempt to account for insertion -- | |
| 2068 it handles insertion inside the old restricted area, but not outside. | |
| 2069 The comment read: | |
| 2070 | |
| 2071 [[ Note: I tried using markers here, but it does not win | |
| 428 | 2072 because insertion at the end of the saved region |
| 844 | 2073 does not advance mh and is considered "outside" the saved region. ]] |
| 2074 | |
| 2075 But that was clearly before the advent of marker-insertion-type. --ben */ | |
| 428 | 2076 |
| 844 | 2077 Fset_marker (bottom, make_int (BUF_BEGV (buf)), wrap_buffer (buf)); |
| 2078 Fset_marker (top, make_int (BUF_ZV (buf)), wrap_buffer (buf)); | |
| 2079 Fset_marker_insertion_type (top, Qt); | |
| 2080 | |
| 2081 return noseeum_cons (wrap_buffer (buf), noseeum_cons (bottom, top)); | |
| 428 | 2082 } |
| 2083 | |
| 2084 Lisp_Object | |
| 2085 save_restriction_restore (Lisp_Object data) | |
| 2086 { | |
| 2087 struct buffer *buf; | |
| 844 | 2088 Lisp_Object markers = XCDR (data); |
| 428 | 2089 int local_clip_changed = 0; |
| 2090 | |
| 2091 buf = XBUFFER (XCAR (data)); | |
| 844 | 2092 /* someone could have killed the buffer in the meantime ... */ |
| 2093 if (BUFFER_LIVE_P (buf)) | |
| 428 | 2094 { |
| 844 | 2095 Charbpos start = marker_position (XCAR (markers)); |
| 2096 Charbpos end = marker_position (XCDR (markers)); | |
| 2097 Bytebpos byte_start = charbpos_to_bytebpos (buf, start); | |
| 2098 Bytebpos byte_end = charbpos_to_bytebpos (buf, end); | |
| 428 | 2099 |
| 844 | 2100 if (BUF_BEGV (buf) != start) |
| 2101 { | |
| 2102 local_clip_changed = 1; | |
| 2103 SET_BOTH_BUF_BEGV (buf, start, byte_start); | |
| 2104 narrow_line_number_cache (buf); | |
| 2105 } | |
| 2106 if (BUF_ZV (buf) != end) | |
| 2107 { | |
| 2108 local_clip_changed = 1; | |
| 2109 SET_BOTH_BUF_ZV (buf, end, byte_end); | |
| 2110 } | |
| 428 | 2111 |
| 844 | 2112 if (local_clip_changed) |
| 2113 MARK_CLIP_CHANGED; | |
| 2114 | |
| 2115 /* If point is outside the new visible range, move it inside. */ | |
| 2116 BUF_SET_PT (buf, charbpos_clip_to_bounds (BUF_BEGV (buf), BUF_PT (buf), | |
| 2117 BUF_ZV (buf))); | |
| 428 | 2118 } |
| 2119 | |
| 844 | 2120 /* Free all the junk we allocated, so that a `save-restriction' comes |
| 2121 for free in terms of GC junk. */ | |
| 1204 | 2122 free_marker (XCAR (markers)); |
| 2123 free_marker (XCDR (markers)); | |
| 853 | 2124 free_cons (markers); |
| 2125 free_cons (data); | |
| 428 | 2126 |
| 2127 return Qnil; | |
| 2128 } | |
| 2129 | |
| 2130 DEFUN ("save-restriction", Fsave_restriction, 0, UNEVALLED, 0, /* | |
| 2131 Execute BODY, saving and restoring current buffer's restrictions. | |
| 2132 The buffer's restrictions make parts of the beginning and end invisible. | |
| 2133 \(They are set up with `narrow-to-region' and eliminated with `widen'.) | |
|
4905
755ae5b97edb
Change "special form" to "special operator" in our sources.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4834
diff
changeset
|
2134 This special operator, `save-restriction', saves the current buffer's |
|
755ae5b97edb
Change "special form" to "special operator" in our sources.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4834
diff
changeset
|
2135 restrictions when it is entered, and restores them when it is exited. |
| 428 | 2136 So any `narrow-to-region' within BODY lasts only until the end of the form. |
| 2137 The old restrictions settings are restored | |
| 2138 even in case of abnormal exit (throw or error). | |
| 2139 | |
| 2140 The value returned is the value of the last form in BODY. | |
| 2141 | |
| 844 | 2142 As of XEmacs 22.0, `save-restriction' correctly handles all modifications |
| 2143 made within BODY. (Formerly, it got confused if, within the BODY, you | |
| 2144 widened and then made changes outside the old restricted area.) | |
| 428 | 2145 |
| 2146 Note: if you are using both `save-excursion' and `save-restriction', | |
| 2147 use `save-excursion' outermost: | |
| 2148 (save-excursion (save-restriction ...)) | |
|
4693
80cd90837ac5
Add argument information to remaining MANY or UNEVALLED C subrs.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4470
diff
changeset
|
2149 |
|
80cd90837ac5
Add argument information to remaining MANY or UNEVALLED C subrs.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4470
diff
changeset
|
2150 arguments: (&rest BODY) |
| 428 | 2151 */ |
| 2152 (body)) | |
| 2153 { | |
| 2154 /* This function can GC */ | |
| 844 | 2155 int speccount = |
| 2156 record_unwind_protect (save_restriction_restore, | |
| 2157 save_restriction_save (current_buffer)); | |
| 428 | 2158 |
| 771 | 2159 return unbind_to_1 (speccount, Fprogn (body)); |
| 428 | 2160 } |
| 2161 | |
| 2162 | |
| 2163 DEFUN ("format", Fformat, 1, MANY, 0, /* | |
| 2164 Format a string out of a control-string and arguments. | |
| 2165 The first argument is a control string. | |
| 2166 The other arguments are substituted into it to make the result, a string. | |
| 2167 It may contain %-sequences meaning to substitute the next argument. | |
| 2168 %s means print all objects as-is, using `princ'. | |
| 2169 %S means print all objects as s-expressions, using `prin1'. | |
| 2170 %d or %i means print as an integer in decimal (%o octal, %x lowercase hex, | |
|
4329
d9eb5ea14f65
Provide %b in #'format; use it for converting between ints and bit vectors.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4266
diff
changeset
|
2171 %X uppercase hex, %b binary). |
| 428 | 2172 %c means print as a single character. |
| 2173 %f means print as a floating-point number in fixed notation (e.g. 785.200). | |
| 2174 %e or %E means print as a floating-point number in scientific notation | |
| 2175 (e.g. 7.85200e+03). | |
| 2176 %g or %G means print as a floating-point number in "pretty format"; | |
| 2177 depending on the number, either %f or %e/%E format will be used, and | |
| 2178 trailing zeroes are removed from the fractional part. | |
| 2179 The argument used for all but %s and %S must be a number. It will be | |
| 2180 converted to an integer or a floating-point number as necessary. | |
| 2181 | |
| 2182 %$ means reposition to read a specific numbered argument; for example, | |
| 2183 %3$s would apply the `%s' to the third argument after the control string, | |
| 2184 and the next format directive would use the fourth argument, the | |
| 2185 following one the fifth argument, etc. (There must be a positive integer | |
| 2186 between the % and the $). | |
| 2187 Zero or more of the flag characters `-', `+', ` ', `0', and `#' may be | |
| 2188 specified between the optional repositioning spec and the conversion | |
| 2189 character; see below. | |
| 2190 An optional minimum field width may be specified after any flag characters | |
| 2191 and before the conversion character; it specifies the minimum number of | |
| 2192 characters that the converted argument will take up. Padding will be | |
| 2193 added on the left (or on the right, if the `-' flag is specified), as | |
| 2194 necessary. Padding is done with spaces, or with zeroes if the `0' flag | |
| 2195 is specified. | |
| 2196 If the field width is specified as `*', the field width is assumed to have | |
| 2197 been specified as an argument. Any repositioning specification that | |
| 2198 would normally specify the argument to be converted will now specify | |
| 2199 where to find this field width argument, not where to find the argument | |
| 2200 to be converted. If there is no repositioning specification, the normal | |
| 2201 next argument is used. The argument to be converted will be the next | |
| 2202 argument after the field width argument unless the precision is also | |
| 2203 specified as `*' (see below). | |
| 2204 | |
| 2205 An optional period character and precision may be specified after any | |
| 2206 minimum field width. It specifies the minimum number of digits to | |
| 2207 appear in %d, %i, %o, %x, and %X conversions (the number is padded | |
| 2208 on the left with zeroes as necessary); the number of digits printed | |
| 2209 after the decimal point for %f, %e, and %E conversions; the number | |
| 2210 of significant digits printed in %g and %G conversions; and the | |
| 2211 maximum number of non-padding characters printed in %s and %S | |
| 2212 conversions. The default precision for floating-point conversions | |
| 2213 is six. | |
| 2214 If the precision is specified as `*', the precision is assumed to have been | |
| 2215 specified as an argument. The argument used will be the next argument | |
| 2216 after the field width argument, if any. If the field width was not | |
| 2217 specified as an argument, any repositioning specification that would | |
| 2218 normally specify the argument to be converted will now specify where to | |
| 2219 find the precision argument. If there is no repositioning specification, | |
| 2220 the normal next argument is used. | |
| 2221 | |
| 2222 The ` ' and `+' flags mean prefix non-negative numbers with a space or | |
| 2223 plus sign, respectively. | |
| 2224 The `#' flag means print numbers in an alternate, more verbose format: | |
| 2225 octal numbers begin with zero; hex numbers begin with a 0x or 0X; | |
| 2226 a decimal point is printed in %f, %e, and %E conversions even if no | |
| 2227 numbers are printed after it; and trailing zeroes are not omitted in | |
| 2228 %g and %G conversions. | |
| 2229 | |
| 2230 Use %% to put a single % into the output. | |
|
4693
80cd90837ac5
Add argument information to remaining MANY or UNEVALLED C subrs.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4470
diff
changeset
|
2231 |
|
80cd90837ac5
Add argument information to remaining MANY or UNEVALLED C subrs.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4470
diff
changeset
|
2232 arguments: (CONTROL-STRING &rest ARGS) |
| 428 | 2233 */ |
| 2234 (int nargs, Lisp_Object *args)) | |
| 2235 { | |
| 2236 /* It should not be necessary to GCPRO ARGS, because | |
| 2237 the caller in the interpreter should take care of that. */ | |
| 2238 | |
| 2239 CHECK_STRING (args[0]); | |
| 771 | 2240 return emacs_vsprintf_string_lisp (0, args[0], nargs - 1, args + 1); |
| 428 | 2241 } |
| 2242 | |
| 2243 | |
| 2244 DEFUN ("char-equal", Fchar_equal, 2, 3, 0, /* | |
| 2245 Return t if two characters match, optionally ignoring case. | |
| 2246 Both arguments must be characters (i.e. NOT integers). | |
| 2247 Case is ignored if `case-fold-search' is non-nil in BUFFER. | |
| 2248 If BUFFER is nil, the current buffer is assumed. | |
| 2249 */ | |
| 444 | 2250 (character1, character2, buffer)) |
| 428 | 2251 { |
| 867 | 2252 Ichar x1, x2; |
| 428 | 2253 struct buffer *b = decode_buffer (buffer, 1); |
| 2254 | |
| 444 | 2255 CHECK_CHAR_COERCE_INT (character1); |
| 2256 CHECK_CHAR_COERCE_INT (character2); | |
| 2257 x1 = XCHAR (character1); | |
| 2258 x2 = XCHAR (character2); | |
| 428 | 2259 |
| 2260 return (!NILP (b->case_fold_search) | |
|
4906
6ef8256a020a
implement equalp in C, fix case-folding, add equal() method for keymaps
Ben Wing <ben@xemacs.org>
parents:
4834
diff
changeset
|
2261 ? CANONCASE (b, x1) == CANONCASE (b, x2) |
| 428 | 2262 : x1 == x2) |
| 2263 ? Qt : Qnil; | |
| 2264 } | |
| 2265 | |
| 434 | 2266 DEFUN ("char=", Fchar_Equal, 2, 2, 0, /* |
| 428 | 2267 Return t if two characters match, case is significant. |
| 2268 Both arguments must be characters (i.e. NOT integers). | |
| 2269 */ | |
| 444 | 2270 (character1, character2)) |
| 428 | 2271 { |
| 444 | 2272 CHECK_CHAR_COERCE_INT (character1); |
| 2273 CHECK_CHAR_COERCE_INT (character2); | |
| 428 | 2274 |
| 444 | 2275 return EQ (character1, character2) ? Qt : Qnil; |
| 428 | 2276 } |
| 2277 | |
| 2278 #if 0 /* Undebugged FSFmacs code */ | |
| 2279 /* Transpose the markers in two regions of the current buffer, and | |
| 2280 adjust the ones between them if necessary (i.e.: if the regions | |
| 2281 differ in size). | |
| 2282 | |
| 2283 Traverses the entire marker list of the buffer to do so, adding an | |
| 2284 appropriate amount to some, subtracting from some, and leaving the | |
| 2285 rest untouched. Most of this is copied from adjust_markers in insdel.c. | |
| 2286 | |
| 2287 It's the caller's job to see that (start1 <= end1 <= start2 <= end2). */ | |
| 2288 | |
| 2289 void | |
| 665 | 2290 transpose_markers (Charbpos start1, Charbpos end1, Charbpos start2, Charbpos end2) |
| 428 | 2291 { |
| 2292 Charcount amt1, amt2, diff; | |
| 2293 Lisp_Object marker; | |
| 2294 struct buffer *buf = current_buffer; | |
| 2295 | |
| 2296 /* Update point as if it were a marker. */ | |
| 2297 if (BUF_PT (buf) < start1) | |
| 2298 ; | |
| 2299 else if (BUF_PT (buf) < end1) | |
| 2300 BUF_SET_PT (buf, BUF_PT (buf) + (end2 - end1)); | |
| 2301 else if (BUF_PT (buf) < start2) | |
| 2302 BUF_SET_PT (buf, BUF_PT (buf) + (end2 - start2) - (end1 - start1)); | |
| 2303 else if (BUF_PT (buf) < end2) | |
| 2304 BUF_SET_PT (buf, BUF_PT (buf) - (start2 - start1)); | |
| 2305 | |
| 2306 /* We used to adjust the endpoints here to account for the gap, but that | |
| 2307 isn't good enough. Even if we assume the caller has tried to move the | |
| 2308 gap out of our way, it might still be at start1 exactly, for example; | |
| 2309 and that places it `inside' the interval, for our purposes. The amount | |
| 2310 of adjustment is nontrivial if there's a `denormalized' marker whose | |
| 2311 position is between GPT and GPT + GAP_SIZE, so it's simpler to leave | |
| 2312 the dirty work to Fmarker_position, below. */ | |
| 2313 | |
| 2314 /* The difference between the region's lengths */ | |
| 2315 diff = (end2 - start2) - (end1 - start1); | |
| 2316 | |
| 2317 /* For shifting each marker in a region by the length of the other | |
| 2318 * region plus the distance between the regions. | |
| 2319 */ | |
| 2320 amt1 = (end2 - start2) + (start2 - end1); | |
| 2321 amt2 = (end1 - start1) + (start2 - end1); | |
| 2322 | |
| 2323 for (marker = BUF_MARKERS (buf); !NILP (marker); | |
| 2324 marker = XMARKER (marker)->chain) | |
| 2325 { | |
| 665 | 2326 Charbpos mpos = marker_position (marker); |
| 428 | 2327 if (mpos >= start1 && mpos < end2) |
| 2328 { | |
| 2329 if (mpos < end1) | |
| 2330 mpos += amt1; | |
| 2331 else if (mpos < start2) | |
| 2332 mpos += diff; | |
| 2333 else | |
| 2334 mpos -= amt2; | |
| 2335 set_marker_position (marker, mpos); | |
| 2336 } | |
| 2337 } | |
| 2338 } | |
| 2339 | |
| 2340 #endif /* 0 */ | |
| 2341 | |
| 2342 DEFUN ("transpose-regions", Ftranspose_regions, 4, 5, 0, /* | |
| 2343 Transpose region START1 to END1 with START2 to END2. | |
| 2344 The regions may not be overlapping, because the size of the buffer is | |
| 2345 never changed in a transposition. | |
| 2346 | |
| 444 | 2347 Optional fifth arg LEAVE-MARKERS, if non-nil, means don't transpose |
| 428 | 2348 any markers that happen to be located in the regions. (#### BUG: currently |
| 444 | 2349 this function always acts as if LEAVE-MARKERS is non-nil.) |
| 428 | 2350 |
| 2351 Transposing beyond buffer boundaries is an error. | |
| 2352 */ | |
| 2286 | 2353 (start1, end1, start2, end2, UNUSED (leave_markers))) |
| 428 | 2354 { |
| 665 | 2355 Charbpos startr1, endr1, startr2, endr2; |
| 428 | 2356 Charcount len1, len2; |
| 2357 Lisp_Object string1, string2; | |
| 2358 struct buffer *buf = current_buffer; | |
| 2359 | |
| 444 | 2360 get_buffer_range_char (buf, start1, end1, &startr1, &endr1, 0); |
| 2361 get_buffer_range_char (buf, start2, end2, &startr2, &endr2, 0); | |
| 428 | 2362 |
| 444 | 2363 len1 = endr1 - startr1; |
| 2364 len2 = endr2 - startr2; | |
| 428 | 2365 |
| 444 | 2366 if (startr2 < endr1) |
| 563 | 2367 invalid_argument ("transposed regions not properly ordered", Qunbound); |
| 444 | 2368 else if (startr1 == endr1 || startr2 == endr2) |
| 563 | 2369 invalid_argument ("transposed region may not be of length 0", Qunbound); |
| 428 | 2370 |
| 444 | 2371 string1 = make_string_from_buffer (buf, startr1, len1); |
| 2372 string2 = make_string_from_buffer (buf, startr2, len2); | |
| 2373 buffer_delete_range (buf, startr2, endr2, 0); | |
| 2374 buffer_insert_lisp_string_1 (buf, startr2, string1, 0); | |
| 2375 buffer_delete_range (buf, startr1, endr1, 0); | |
| 2376 buffer_insert_lisp_string_1 (buf, startr1, string2, 0); | |
| 428 | 2377 |
| 2378 /* In FSFmacs there is a whole bunch of really ugly code here | |
| 2379 to attempt to transpose the regions without using up any | |
| 2380 extra memory. Although the intent may be good, the result | |
| 2381 was highly bogus. */ | |
| 2382 | |
| 2383 return Qnil; | |
| 2384 } | |
| 2385 | |
| 2386 | |
| 2387 /************************************************************************/ | |
| 2388 /* initialization */ | |
| 2389 /************************************************************************/ | |
| 2390 | |
| 2391 void | |
| 2392 syms_of_editfns (void) | |
| 2393 { | |
| 563 | 2394 DEFSYMBOL (Qpoint); |
| 2395 DEFSYMBOL (Qmark); | |
| 2396 DEFSYMBOL (Qregion_beginning); | |
| 2397 DEFSYMBOL (Qregion_end); | |
| 2398 DEFSYMBOL (Qformat); | |
| 2399 DEFSYMBOL (Quser_files_and_directories); | |
| 428 | 2400 |
| 2401 DEFSUBR (Fchar_equal); | |
| 2402 DEFSUBR (Fchar_Equal); | |
| 2403 DEFSUBR (Fgoto_char); | |
| 2404 DEFSUBR (Fstring_to_char); | |
| 2405 DEFSUBR (Fchar_to_string); | |
| 2406 DEFSUBR (Fbuffer_substring); | |
| 2407 DEFSUBR (Fbuffer_substring_no_properties); | |
| 2408 | |
| 2409 DEFSUBR (Fpoint_marker); | |
| 2410 DEFSUBR (Fmark_marker); | |
| 2411 DEFSUBR (Fpoint); | |
| 2412 DEFSUBR (Fregion_beginning); | |
| 2413 DEFSUBR (Fregion_end); | |
| 2414 DEFSUBR (Fsave_excursion); | |
| 2415 DEFSUBR (Fsave_current_buffer); | |
| 2416 | |
| 2417 DEFSUBR (Fbuffer_size); | |
| 2418 DEFSUBR (Fpoint_max); | |
| 2419 DEFSUBR (Fpoint_min); | |
| 2420 DEFSUBR (Fpoint_min_marker); | |
| 2421 DEFSUBR (Fpoint_max_marker); | |
| 2422 | |
| 2423 DEFSUBR (Fbobp); | |
| 2424 DEFSUBR (Feobp); | |
| 2425 DEFSUBR (Fbolp); | |
| 2426 DEFSUBR (Feolp); | |
| 2427 DEFSUBR (Ffollowing_char); | |
| 2428 DEFSUBR (Fpreceding_char); | |
| 2429 DEFSUBR (Fchar_after); | |
| 2430 DEFSUBR (Fchar_before); | |
| 2431 DEFSUBR (Finsert); | |
| 2432 DEFSUBR (Finsert_string); | |
| 2433 DEFSUBR (Finsert_before_markers); | |
| 2434 DEFSUBR (Finsert_char); | |
| 2435 | |
| 2436 DEFSUBR (Ftemp_directory); | |
| 2437 DEFSUBR (Fuser_login_name); | |
| 2438 DEFSUBR (Fuser_real_login_name); | |
| 2439 DEFSUBR (Fuser_uid); | |
| 2440 DEFSUBR (Fuser_real_uid); | |
| 2441 DEFSUBR (Fuser_full_name); | |
| 2442 DEFSUBR (Fuser_home_directory); | |
| 2443 DEFSUBR (Femacs_pid); | |
| 2444 DEFSUBR (Fcurrent_time); | |
| 2445 DEFSUBR (Fcurrent_process_time); | |
| 2446 DEFSUBR (Fformat_time_string); | |
| 2447 DEFSUBR (Fdecode_time); | |
| 2448 DEFSUBR (Fencode_time); | |
| 2449 DEFSUBR (Fcurrent_time_string); | |
| 2450 DEFSUBR (Fcurrent_time_zone); | |
| 2451 DEFSUBR (Fset_time_zone_rule); | |
| 2452 DEFSUBR (Fsystem_name); | |
| 2453 DEFSUBR (Fformat); | |
| 2454 | |
| 2455 DEFSUBR (Finsert_buffer_substring); | |
| 2456 DEFSUBR (Fcompare_buffer_substrings); | |
| 2457 DEFSUBR (Fsubst_char_in_region); | |
| 2458 DEFSUBR (Ftranslate_region); | |
| 2459 DEFSUBR (Fdelete_region); | |
| 2460 DEFSUBR (Fwiden); | |
| 2461 DEFSUBR (Fnarrow_to_region); | |
| 2462 DEFSUBR (Fsave_restriction); | |
| 2463 DEFSUBR (Ftranspose_regions); | |
| 2464 | |
| 563 | 2465 DEFSYMBOL (Qzmacs_update_region); |
| 2466 DEFSYMBOL (Qzmacs_deactivate_region); | |
| 2467 DEFSYMBOL (Qzmacs_region_buffer); | |
| 428 | 2468 } |
| 2469 | |
| 2470 void | |
| 2471 vars_of_editfns (void) | |
| 2472 { | |
| 2473 staticpro (&Vsystem_name); | |
| 2474 #if 0 | |
| 2475 staticpro (&Vuser_name); | |
| 2476 staticpro (&Vuser_real_name); | |
| 2477 #endif | |
| 2478 DEFVAR_BOOL ("zmacs-regions", &zmacs_regions /* | |
| 2479 *Whether LISPM-style active regions should be used. | |
| 2480 This means that commands which operate on the region (the area between the | |
| 2481 point and the mark) will only work while the region is in the ``active'' | |
| 2482 state, which is indicated by highlighting. Executing most commands causes | |
| 2483 the region to not be in the active state, so (for example) \\[kill-region] will only | |
| 2484 work immediately after activating the region. | |
| 2485 | |
| 2486 More specifically: | |
| 2487 | |
| 2488 - Commands which operate on the region only work if the region is active. | |
| 2489 - Only a very small set of commands cause the region to become active: | |
| 444 | 2490 Those commands whose semantics are to mark an area, like `mark-defun'. |
| 428 | 2491 - The region is deactivated after each command that is executed, except that: |
| 2492 - "Motion" commands do not change whether the region is active or not. | |
| 2493 | |
| 2494 set-mark-command (C-SPC) pushes a mark and activates the region. Moving the | |
| 2495 cursor with normal motion commands (C-n, C-p, etc) will cause the region | |
| 2496 between point and the recently-pushed mark to be highlighted. It will | |
| 2497 remain highlighted until some non-motion command is executed. | |
| 2498 | |
| 2499 exchange-point-and-mark (\\[exchange-point-and-mark]) activates the region. So if you mark a | |
| 2500 region and execute a command that operates on it, you can reactivate the | |
| 2501 same region with \\[exchange-point-and-mark] (or perhaps \\[exchange-point-and-mark] \\[exchange-point-and-mark]) to operate on it | |
| 2502 again. | |
| 2503 | |
| 2504 Generally, commands which push marks as a means of navigation (like | |
| 2505 beginning-of-buffer and end-of-buffer (M-< and M->)) do not activate the | |
| 2506 region. But commands which push marks as a means of marking an area of | |
| 2507 text (like mark-defun (\\[mark-defun]), mark-word (\\[mark-word]) or mark-whole-buffer (\\[mark-whole-buffer])) | |
| 2508 do activate the region. | |
| 2509 | |
| 2510 The way the command loop actually works with regard to deactivating the | |
| 2511 region is as follows: | |
| 2512 | |
| 2513 - If the variable `zmacs-region-stays' has been set to t during the command | |
| 2514 just executed, the region is left alone (this is how the motion commands | |
| 2515 make the region stay around; see the `_' flag in the `interactive' | |
| 2516 specification). `zmacs-region-stays' is reset to nil before each command | |
| 2517 is executed. | |
| 2518 - If the function `zmacs-activate-region' has been called during the command | |
| 2519 just executed, the region is left alone. Very few functions should | |
| 2520 actually call this function. | |
| 2521 - Otherwise, if the region is active, the region is deactivated and | |
| 2522 the `zmacs-deactivate-region-hook' is called. | |
| 2523 */ ); | |
| 2524 /* Zmacs style active regions are now ON by default */ | |
| 2525 zmacs_regions = 1; | |
| 2526 | |
| 2527 DEFVAR_BOOL ("zmacs-region-active-p", &zmacs_region_active_p /* | |
| 2528 Do not alter this. It is for internal use only. | |
| 2529 */ ); | |
| 2530 zmacs_region_active_p = 0; | |
| 2531 | |
| 2532 DEFVAR_BOOL ("zmacs-region-stays", &zmacs_region_stays /* | |
| 2533 Whether the current command will deactivate the region. | |
| 2534 Commands which do not wish to affect whether the region is currently | |
| 2535 highlighted should set this to t. Normally, the region is turned off after | |
| 2536 executing each command that did not explicitly turn it on with the function | |
| 2537 zmacs-activate-region. Setting this to true lets a command be non-intrusive. | |
| 2538 See the variable `zmacs-regions'. | |
| 2539 | |
| 2540 The same effect can be achieved using the `_' interactive specification. | |
| 442 | 2541 |
| 2542 `zmacs-region-stays' is reset to nil before each command is executed. | |
| 428 | 2543 */ ); |
| 2544 zmacs_region_stays = 0; | |
| 2545 | |
| 2546 DEFVAR_BOOL ("atomic-extent-goto-char-p", &atomic_extent_goto_char_p /* | |
| 2547 Do not use this -- it will be going away soon. | |
| 2548 Indicates if `goto-char' has just been run. This information is allegedly | |
| 2549 needed to get the desired behavior for atomic extents and unfortunately | |
| 2550 is not available by any other means. | |
| 2551 */ ); | |
| 2552 atomic_extent_goto_char_p = 0; | |
| 2553 #ifdef AMPERSAND_FULL_NAME | |
| 771 | 2554 Fprovide (intern ("ampersand-full-name")); |
| 428 | 2555 #endif |
| 2556 | |
| 2557 DEFVAR_LISP ("user-full-name", &Vuser_full_name /* | |
| 2558 *The name of the user. | |
| 4266 | 2559 The function `user-full-name' will return the value of this variable, when |
| 2560 called without arguments. | |
| 428 | 2561 This is initialized to the value of the NAME environment variable. |
| 2562 */ ); | |
| 2563 /* Initialized at run-time. */ | |
| 2564 Vuser_full_name = Qnil; | |
| 2565 } |