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