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35692fe0 | 1 | /* Lisp functions pertaining to editing. |
c9ac7fca | 2 | Copyright (C) 1985,86,87,89,93,94,95,96 Free Software Foundation, Inc. |
35692fe0 JB |
3 | |
4 | This file is part of GNU Emacs. | |
5 | ||
6 | GNU Emacs is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
7c938215 | 8 | the Free Software Foundation; either version 2, or (at your option) |
35692fe0 JB |
9 | any later version. |
10 | ||
11 | GNU Emacs is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GNU Emacs; see the file COPYING. If not, write to | |
5a7670bf RS |
18 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
19 | Boston, MA 02111-1307, USA. */ | |
35692fe0 JB |
20 | |
21 | ||
738429d1 JB |
22 | #include <sys/types.h> |
23 | ||
18160b98 | 24 | #include <config.h> |
bfb61299 JB |
25 | |
26 | #ifdef VMS | |
956ace37 | 27 | #include "vms-pwd.h" |
bfb61299 | 28 | #else |
35692fe0 | 29 | #include <pwd.h> |
bfb61299 JB |
30 | #endif |
31 | ||
35692fe0 | 32 | #include "lisp.h" |
74d6d8c5 | 33 | #include "intervals.h" |
35692fe0 JB |
34 | #include "buffer.h" |
35 | #include "window.h" | |
36 | ||
956ace37 | 37 | #include "systime.h" |
35692fe0 JB |
38 | |
39 | #define min(a, b) ((a) < (b) ? (a) : (b)) | |
40 | #define max(a, b) ((a) > (b) ? (a) : (b)) | |
41 | ||
c59b5089 PE |
42 | extern char **environ; |
43 | extern Lisp_Object make_time (); | |
b1b0ee5a | 44 | extern void insert_from_buffer (); |
94751666 | 45 | static int tm_diff (); |
260e2e2a | 46 | static void update_buffer_properties (); |
a92ae0ce | 47 | void set_time_zone_rule (); |
260e2e2a KH |
48 | |
49 | Lisp_Object Vbuffer_access_fontify_functions; | |
50 | Lisp_Object Qbuffer_access_fontify_functions; | |
51 | Lisp_Object Vbuffer_access_fontified_property; | |
b1b0ee5a | 52 | |
35692fe0 JB |
53 | /* Some static data, and a function to initialize it for each run */ |
54 | ||
55 | Lisp_Object Vsystem_name; | |
35b34f72 KH |
56 | Lisp_Object Vuser_real_login_name; /* login name of current user ID */ |
57 | Lisp_Object Vuser_full_name; /* full name of current user */ | |
58 | Lisp_Object Vuser_login_name; /* user name from LOGNAME or USER */ | |
35692fe0 JB |
59 | |
60 | void | |
61 | init_editfns () | |
62 | { | |
52b14ac0 | 63 | char *user_name; |
35692fe0 JB |
64 | register unsigned char *p, *q, *r; |
65 | struct passwd *pw; /* password entry for the current user */ | |
35692fe0 JB |
66 | Lisp_Object tem; |
67 | ||
68 | /* Set up system_name even when dumping. */ | |
ac988277 | 69 | init_system_name (); |
35692fe0 JB |
70 | |
71 | #ifndef CANNOT_DUMP | |
72 | /* Don't bother with this on initial start when just dumping out */ | |
73 | if (!initialized) | |
74 | return; | |
75 | #endif /* not CANNOT_DUMP */ | |
76 | ||
77 | pw = (struct passwd *) getpwuid (getuid ()); | |
87485d6f MW |
78 | #ifdef MSDOS |
79 | /* We let the real user name default to "root" because that's quite | |
80 | accurate on MSDOG and because it lets Emacs find the init file. | |
81 | (The DVX libraries override the Djgpp libraries here.) */ | |
35b34f72 | 82 | Vuser_real_login_name = build_string (pw ? pw->pw_name : "root"); |
87485d6f | 83 | #else |
35b34f72 | 84 | Vuser_real_login_name = build_string (pw ? pw->pw_name : "unknown"); |
87485d6f | 85 | #endif |
35692fe0 | 86 | |
52b14ac0 JB |
87 | /* Get the effective user name, by consulting environment variables, |
88 | or the effective uid if those are unset. */ | |
2c9ae24e | 89 | user_name = (char *) getenv ("LOGNAME"); |
35692fe0 | 90 | if (!user_name) |
4691c06d RS |
91 | #ifdef WINDOWSNT |
92 | user_name = (char *) getenv ("USERNAME"); /* it's USERNAME on NT */ | |
93 | #else /* WINDOWSNT */ | |
2c9ae24e | 94 | user_name = (char *) getenv ("USER"); |
4691c06d | 95 | #endif /* WINDOWSNT */ |
52b14ac0 JB |
96 | if (!user_name) |
97 | { | |
98 | pw = (struct passwd *) getpwuid (geteuid ()); | |
99 | user_name = (char *) (pw ? pw->pw_name : "unknown"); | |
100 | } | |
35b34f72 | 101 | Vuser_login_name = build_string (user_name); |
35692fe0 | 102 | |
52b14ac0 JB |
103 | /* If the user name claimed in the environment vars differs from |
104 | the real uid, use the claimed name to find the full name. */ | |
35b34f72 | 105 | tem = Fstring_equal (Vuser_login_name, Vuser_real_login_name); |
3415b0e9 RS |
106 | Vuser_full_name = Fuser_full_name (NILP (tem)? make_number (geteuid()) |
107 | : Vuser_login_name); | |
35692fe0 | 108 | |
8f1e2d16 | 109 | p = (unsigned char *) getenv ("NAME"); |
9d36d071 RS |
110 | if (p) |
111 | Vuser_full_name = build_string (p); | |
3347526c RS |
112 | else if (NILP (Vuser_full_name)) |
113 | Vuser_full_name = build_string ("unknown"); | |
35692fe0 JB |
114 | } |
115 | \f | |
116 | DEFUN ("char-to-string", Fchar_to_string, Schar_to_string, 1, 1, 0, | |
2591ec64 EN |
117 | "Convert arg CHARACTER to a one-character string containing that character.") |
118 | (character) | |
119 | Lisp_Object character; | |
35692fe0 JB |
120 | { |
121 | char c; | |
2591ec64 | 122 | CHECK_NUMBER (character, 0); |
35692fe0 | 123 | |
2591ec64 | 124 | c = XINT (character); |
35692fe0 JB |
125 | return make_string (&c, 1); |
126 | } | |
127 | ||
128 | DEFUN ("string-to-char", Fstring_to_char, Sstring_to_char, 1, 1, 0, | |
129 | "Convert arg STRING to a character, the first character of that string.") | |
2591ec64 EN |
130 | (string) |
131 | register Lisp_Object string; | |
35692fe0 JB |
132 | { |
133 | register Lisp_Object val; | |
134 | register struct Lisp_String *p; | |
2591ec64 | 135 | CHECK_STRING (string, 0); |
35692fe0 | 136 | |
2591ec64 | 137 | p = XSTRING (string); |
35692fe0 | 138 | if (p->size) |
55561c63 | 139 | XSETFASTINT (val, ((unsigned char *) p->data)[0]); |
35692fe0 | 140 | else |
55561c63 | 141 | XSETFASTINT (val, 0); |
35692fe0 JB |
142 | return val; |
143 | } | |
144 | \f | |
145 | static Lisp_Object | |
146 | buildmark (val) | |
147 | int val; | |
148 | { | |
149 | register Lisp_Object mark; | |
150 | mark = Fmake_marker (); | |
151 | Fset_marker (mark, make_number (val), Qnil); | |
152 | return mark; | |
153 | } | |
154 | ||
155 | DEFUN ("point", Fpoint, Spoint, 0, 0, 0, | |
156 | "Return value of point, as an integer.\n\ | |
157 | Beginning of buffer is position (point-min)") | |
158 | () | |
159 | { | |
160 | Lisp_Object temp; | |
6ec8bbd2 | 161 | XSETFASTINT (temp, PT); |
35692fe0 JB |
162 | return temp; |
163 | } | |
164 | ||
165 | DEFUN ("point-marker", Fpoint_marker, Spoint_marker, 0, 0, 0, | |
166 | "Return value of point, as a marker object.") | |
167 | () | |
168 | { | |
6ec8bbd2 | 169 | return buildmark (PT); |
35692fe0 JB |
170 | } |
171 | ||
172 | int | |
173 | clip_to_bounds (lower, num, upper) | |
174 | int lower, num, upper; | |
175 | { | |
176 | if (num < lower) | |
177 | return lower; | |
178 | else if (num > upper) | |
179 | return upper; | |
180 | else | |
181 | return num; | |
182 | } | |
183 | ||
184 | DEFUN ("goto-char", Fgoto_char, Sgoto_char, 1, 1, "NGoto char: ", | |
185 | "Set point to POSITION, a number or marker.\n\ | |
186 | Beginning of buffer is position (point-min), end is (point-max).") | |
2591ec64 EN |
187 | (position) |
188 | register Lisp_Object position; | |
35692fe0 | 189 | { |
2591ec64 | 190 | CHECK_NUMBER_COERCE_MARKER (position, 0); |
35692fe0 | 191 | |
2591ec64 EN |
192 | SET_PT (clip_to_bounds (BEGV, XINT (position), ZV)); |
193 | return position; | |
35692fe0 JB |
194 | } |
195 | ||
196 | static Lisp_Object | |
197 | region_limit (beginningp) | |
198 | int beginningp; | |
199 | { | |
646d9d18 | 200 | extern Lisp_Object Vmark_even_if_inactive; /* Defined in callint.c. */ |
35692fe0 | 201 | register Lisp_Object m; |
c9dd14e1 RM |
202 | if (!NILP (Vtransient_mark_mode) && NILP (Vmark_even_if_inactive) |
203 | && NILP (current_buffer->mark_active)) | |
204 | Fsignal (Qmark_inactive, Qnil); | |
35692fe0 | 205 | m = Fmarker_position (current_buffer->mark); |
56a98455 | 206 | if (NILP (m)) error ("There is no region now"); |
6ec8bbd2 KH |
207 | if ((PT < XFASTINT (m)) == beginningp) |
208 | return (make_number (PT)); | |
35692fe0 JB |
209 | else |
210 | return (m); | |
211 | } | |
212 | ||
213 | DEFUN ("region-beginning", Fregion_beginning, Sregion_beginning, 0, 0, 0, | |
214 | "Return position of beginning of region, as an integer.") | |
215 | () | |
216 | { | |
217 | return (region_limit (1)); | |
218 | } | |
219 | ||
220 | DEFUN ("region-end", Fregion_end, Sregion_end, 0, 0, 0, | |
221 | "Return position of end of region, as an integer.") | |
222 | () | |
223 | { | |
224 | return (region_limit (0)); | |
225 | } | |
226 | ||
35692fe0 JB |
227 | DEFUN ("mark-marker", Fmark_marker, Smark_marker, 0, 0, 0, |
228 | "Return this buffer's mark, as a marker object.\n\ | |
229 | Watch out! Moving this marker changes the mark position.\n\ | |
230 | If you set the marker not to point anywhere, the buffer will have no mark.") | |
231 | () | |
232 | { | |
233 | return current_buffer->mark; | |
234 | } | |
c9ed721d RS |
235 | \f |
236 | DEFUN ("line-beginning-position", Fline_beginning_position, Sline_beginning_position, | |
237 | 0, 1, 0, | |
238 | "Return the character position of the first character on the current line.\n\ | |
239 | With argument N not nil or 1, move forward N - 1 lines first.\n\ | |
240 | If scan reaches end of buffer, return that position.\n\ | |
241 | This function does not move point.") | |
242 | (n) | |
243 | Lisp_Object n; | |
244 | { | |
245 | register int orig, end; | |
246 | ||
247 | if (NILP (n)) | |
248 | XSETFASTINT (n, 1); | |
249 | else | |
250 | CHECK_NUMBER (n, 0); | |
251 | ||
252 | orig = PT; | |
253 | Fforward_line (make_number (XINT (n) - 1)); | |
254 | end = PT; | |
255 | SET_PT (orig); | |
35692fe0 | 256 | |
c9ed721d RS |
257 | return make_number (end); |
258 | } | |
259 | ||
260 | DEFUN ("line-end-position", Fline_end_position, Sline_end_position, | |
261 | 0, 1, 0, | |
262 | "Return the character position of the last character on the current line.\n\ | |
263 | With argument N not nil or 1, move forward N - 1 lines first.\n\ | |
264 | If scan reaches end of buffer, return that position.\n\ | |
265 | This function does not move point.") | |
266 | (n) | |
267 | Lisp_Object n; | |
268 | { | |
269 | if (NILP (n)) | |
270 | XSETFASTINT (n, 1); | |
271 | else | |
272 | CHECK_NUMBER (n, 0); | |
273 | ||
274 | return make_number (find_before_next_newline | |
275 | (PT, 0, XINT (n) - (XINT (n) <= 0))); | |
276 | } | |
277 | \f | |
35692fe0 JB |
278 | Lisp_Object |
279 | save_excursion_save () | |
280 | { | |
0e2c9c70 JB |
281 | register int visible = (XBUFFER (XWINDOW (selected_window)->buffer) |
282 | == current_buffer); | |
35692fe0 JB |
283 | |
284 | return Fcons (Fpoint_marker (), | |
aea4a109 | 285 | Fcons (Fcopy_marker (current_buffer->mark, Qnil), |
9772455e RS |
286 | Fcons (visible ? Qt : Qnil, |
287 | current_buffer->mark_active))); | |
35692fe0 JB |
288 | } |
289 | ||
290 | Lisp_Object | |
291 | save_excursion_restore (info) | |
4ad8681a | 292 | Lisp_Object info; |
35692fe0 | 293 | { |
4ad8681a RS |
294 | Lisp_Object tem, tem1, omark, nmark; |
295 | struct gcpro gcpro1, gcpro2, gcpro3; | |
35692fe0 JB |
296 | |
297 | tem = Fmarker_buffer (Fcar (info)); | |
298 | /* If buffer being returned to is now deleted, avoid error */ | |
299 | /* Otherwise could get error here while unwinding to top level | |
300 | and crash */ | |
301 | /* In that case, Fmarker_buffer returns nil now. */ | |
56a98455 | 302 | if (NILP (tem)) |
35692fe0 | 303 | return Qnil; |
4ad8681a RS |
304 | |
305 | omark = nmark = Qnil; | |
306 | GCPRO3 (info, omark, nmark); | |
307 | ||
35692fe0 JB |
308 | Fset_buffer (tem); |
309 | tem = Fcar (info); | |
310 | Fgoto_char (tem); | |
311 | unchain_marker (tem); | |
312 | tem = Fcar (Fcdr (info)); | |
03d18690 | 313 | omark = Fmarker_position (current_buffer->mark); |
35692fe0 | 314 | Fset_marker (current_buffer->mark, tem, Fcurrent_buffer ()); |
03d18690 | 315 | nmark = Fmarker_position (tem); |
35692fe0 JB |
316 | unchain_marker (tem); |
317 | tem = Fcdr (Fcdr (info)); | |
ef580991 RS |
318 | #if 0 /* We used to make the current buffer visible in the selected window |
319 | if that was true previously. That avoids some anomalies. | |
320 | But it creates others, and it wasn't documented, and it is simpler | |
321 | and cleaner never to alter the window/buffer connections. */ | |
9772455e RS |
322 | tem1 = Fcar (tem); |
323 | if (!NILP (tem1) | |
0e2c9c70 | 324 | && current_buffer != XBUFFER (XWINDOW (selected_window)->buffer)) |
35692fe0 | 325 | Fswitch_to_buffer (Fcurrent_buffer (), Qnil); |
ef580991 | 326 | #endif /* 0 */ |
9772455e RS |
327 | |
328 | tem1 = current_buffer->mark_active; | |
329 | current_buffer->mark_active = Fcdr (tem); | |
9fed2b18 RS |
330 | if (!NILP (Vrun_hooks)) |
331 | { | |
03d18690 RS |
332 | /* If mark is active now, and either was not active |
333 | or was at a different place, run the activate hook. */ | |
9fed2b18 | 334 | if (! NILP (current_buffer->mark_active)) |
03d18690 RS |
335 | { |
336 | if (! EQ (omark, nmark)) | |
337 | call1 (Vrun_hooks, intern ("activate-mark-hook")); | |
338 | } | |
339 | /* If mark has ceased to be active, run deactivate hook. */ | |
9fed2b18 RS |
340 | else if (! NILP (tem1)) |
341 | call1 (Vrun_hooks, intern ("deactivate-mark-hook")); | |
342 | } | |
4ad8681a | 343 | UNGCPRO; |
35692fe0 JB |
344 | return Qnil; |
345 | } | |
346 | ||
347 | DEFUN ("save-excursion", Fsave_excursion, Ssave_excursion, 0, UNEVALLED, 0, | |
348 | "Save point, mark, and current buffer; execute BODY; restore those things.\n\ | |
349 | Executes BODY just like `progn'.\n\ | |
350 | The values of point, mark and the current buffer are restored\n\ | |
9772455e RS |
351 | even in case of abnormal exit (throw or error).\n\ |
352 | The state of activation of the mark is also restored.") | |
35692fe0 JB |
353 | (args) |
354 | Lisp_Object args; | |
355 | { | |
356 | register Lisp_Object val; | |
357 | int count = specpdl_ptr - specpdl; | |
358 | ||
359 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
4bc8c7d2 RS |
360 | |
361 | val = Fprogn (args); | |
362 | return unbind_to (count, val); | |
363 | } | |
364 | ||
365 | DEFUN ("save-current-buffer", Fsave_current_buffer, Ssave_current_buffer, 0, UNEVALLED, 0, | |
366 | "Save the current buffer; execute BODY; restore the current buffer.\n\ | |
367 | Executes BODY just like `progn'.") | |
368 | (args) | |
369 | Lisp_Object args; | |
370 | { | |
371 | register Lisp_Object val; | |
372 | int count = specpdl_ptr - specpdl; | |
373 | ||
374 | record_unwind_protect (Fset_buffer, Fcurrent_buffer ()); | |
375 | ||
35692fe0 JB |
376 | val = Fprogn (args); |
377 | return unbind_to (count, val); | |
378 | } | |
379 | \f | |
380 | DEFUN ("buffer-size", Fbufsize, Sbufsize, 0, 0, 0, | |
381 | "Return the number of characters in the current buffer.") | |
382 | () | |
383 | { | |
384 | Lisp_Object temp; | |
55561c63 | 385 | XSETFASTINT (temp, Z - BEG); |
35692fe0 JB |
386 | return temp; |
387 | } | |
388 | ||
389 | DEFUN ("point-min", Fpoint_min, Spoint_min, 0, 0, 0, | |
390 | "Return the minimum permissible value of point in the current buffer.\n\ | |
4c390850 | 391 | This is 1, unless narrowing (a buffer restriction) is in effect.") |
35692fe0 JB |
392 | () |
393 | { | |
394 | Lisp_Object temp; | |
55561c63 | 395 | XSETFASTINT (temp, BEGV); |
35692fe0 JB |
396 | return temp; |
397 | } | |
398 | ||
399 | DEFUN ("point-min-marker", Fpoint_min_marker, Spoint_min_marker, 0, 0, 0, | |
400 | "Return a marker to the minimum permissible value of point in this buffer.\n\ | |
4c390850 | 401 | This is the beginning, unless narrowing (a buffer restriction) is in effect.") |
35692fe0 JB |
402 | () |
403 | { | |
404 | return buildmark (BEGV); | |
405 | } | |
406 | ||
407 | DEFUN ("point-max", Fpoint_max, Spoint_max, 0, 0, 0, | |
408 | "Return the maximum permissible value of point in the current buffer.\n\ | |
4c390850 RS |
409 | This is (1+ (buffer-size)), unless narrowing (a buffer restriction)\n\ |
410 | is in effect, in which case it is less.") | |
35692fe0 JB |
411 | () |
412 | { | |
413 | Lisp_Object temp; | |
55561c63 | 414 | XSETFASTINT (temp, ZV); |
35692fe0 JB |
415 | return temp; |
416 | } | |
417 | ||
418 | DEFUN ("point-max-marker", Fpoint_max_marker, Spoint_max_marker, 0, 0, 0, | |
419 | "Return a marker to the maximum permissible value of point in this buffer.\n\ | |
4c390850 RS |
420 | This is (1+ (buffer-size)), unless narrowing (a buffer restriction)\n\ |
421 | is in effect, in which case it is less.") | |
35692fe0 JB |
422 | () |
423 | { | |
424 | return buildmark (ZV); | |
425 | } | |
426 | ||
850a8179 JB |
427 | DEFUN ("following-char", Ffollowing_char, Sfollowing_char, 0, 0, 0, |
428 | "Return the character following point, as a number.\n\ | |
429 | At the end of the buffer or accessible region, return 0.") | |
35692fe0 JB |
430 | () |
431 | { | |
432 | Lisp_Object temp; | |
6ec8bbd2 | 433 | if (PT >= ZV) |
55561c63 | 434 | XSETFASTINT (temp, 0); |
850a8179 | 435 | else |
6ec8bbd2 | 436 | XSETFASTINT (temp, FETCH_CHAR (PT)); |
35692fe0 JB |
437 | return temp; |
438 | } | |
439 | ||
850a8179 JB |
440 | DEFUN ("preceding-char", Fprevious_char, Sprevious_char, 0, 0, 0, |
441 | "Return the character preceding point, as a number.\n\ | |
442 | At the beginning of the buffer or accessible region, return 0.") | |
35692fe0 JB |
443 | () |
444 | { | |
445 | Lisp_Object temp; | |
6ec8bbd2 | 446 | if (PT <= BEGV) |
55561c63 | 447 | XSETFASTINT (temp, 0); |
35692fe0 | 448 | else |
6ec8bbd2 | 449 | XSETFASTINT (temp, FETCH_CHAR (PT - 1)); |
35692fe0 JB |
450 | return temp; |
451 | } | |
452 | ||
453 | DEFUN ("bobp", Fbobp, Sbobp, 0, 0, 0, | |
454 | "Return T if point is at the beginning of the buffer.\n\ | |
455 | If the buffer is narrowed, this means the beginning of the narrowed part.") | |
456 | () | |
457 | { | |
6ec8bbd2 | 458 | if (PT == BEGV) |
35692fe0 JB |
459 | return Qt; |
460 | return Qnil; | |
461 | } | |
462 | ||
463 | DEFUN ("eobp", Feobp, Seobp, 0, 0, 0, | |
464 | "Return T if point is at the end of the buffer.\n\ | |
465 | If the buffer is narrowed, this means the end of the narrowed part.") | |
466 | () | |
467 | { | |
6ec8bbd2 | 468 | if (PT == ZV) |
35692fe0 JB |
469 | return Qt; |
470 | return Qnil; | |
471 | } | |
472 | ||
473 | DEFUN ("bolp", Fbolp, Sbolp, 0, 0, 0, | |
474 | "Return T if point is at the beginning of a line.") | |
475 | () | |
476 | { | |
6ec8bbd2 | 477 | if (PT == BEGV || FETCH_CHAR (PT - 1) == '\n') |
35692fe0 JB |
478 | return Qt; |
479 | return Qnil; | |
480 | } | |
481 | ||
482 | DEFUN ("eolp", Feolp, Seolp, 0, 0, 0, | |
483 | "Return T if point is at the end of a line.\n\ | |
484 | `End of a line' includes point being at the end of the buffer.") | |
485 | () | |
486 | { | |
6ec8bbd2 | 487 | if (PT == ZV || FETCH_CHAR (PT) == '\n') |
35692fe0 JB |
488 | return Qt; |
489 | return Qnil; | |
490 | } | |
491 | ||
492 | DEFUN ("char-after", Fchar_after, Schar_after, 1, 1, 0, | |
493 | "Return character in current buffer at position POS.\n\ | |
494 | POS is an integer or a buffer pointer.\n\ | |
495 | If POS is out of range, the value is nil.") | |
496 | (pos) | |
497 | Lisp_Object pos; | |
498 | { | |
499 | register Lisp_Object val; | |
500 | register int n; | |
501 | ||
502 | CHECK_NUMBER_COERCE_MARKER (pos, 0); | |
503 | ||
504 | n = XINT (pos); | |
505 | if (n < BEGV || n >= ZV) return Qnil; | |
506 | ||
55561c63 | 507 | XSETFASTINT (val, FETCH_CHAR (n)); |
35692fe0 JB |
508 | return val; |
509 | } | |
510 | \f | |
87485d6f | 511 | DEFUN ("user-login-name", Fuser_login_name, Suser_login_name, 0, 1, 0, |
35692fe0 JB |
512 | "Return the name under which the user logged in, as a string.\n\ |
513 | This is based on the effective uid, not the real uid.\n\ | |
2c9ae24e | 514 | Also, if the environment variable LOGNAME or USER is set,\n\ |
87485d6f MW |
515 | that determines the value of this function.\n\n\ |
516 | If optional argument UID is an integer, return the login name of the user\n\ | |
517 | with that uid, or nil if there is no such user.") | |
518 | (uid) | |
519 | Lisp_Object uid; | |
35692fe0 | 520 | { |
87485d6f MW |
521 | struct passwd *pw; |
522 | ||
f8a0e364 RS |
523 | /* Set up the user name info if we didn't do it before. |
524 | (That can happen if Emacs is dumpable | |
525 | but you decide to run `temacs -l loadup' and not dump. */ | |
35b34f72 | 526 | if (INTEGERP (Vuser_login_name)) |
f8a0e364 | 527 | init_editfns (); |
87485d6f MW |
528 | |
529 | if (NILP (uid)) | |
35b34f72 | 530 | return Vuser_login_name; |
87485d6f MW |
531 | |
532 | CHECK_NUMBER (uid, 0); | |
533 | pw = (struct passwd *) getpwuid (XINT (uid)); | |
534 | return (pw ? build_string (pw->pw_name) : Qnil); | |
35692fe0 JB |
535 | } |
536 | ||
537 | DEFUN ("user-real-login-name", Fuser_real_login_name, Suser_real_login_name, | |
538 | 0, 0, 0, | |
539 | "Return the name of the user's real uid, as a string.\n\ | |
9658bdd0 | 540 | This ignores the environment variables LOGNAME and USER, so it differs from\n\ |
b1da234a | 541 | `user-login-name' when running under `su'.") |
35692fe0 JB |
542 | () |
543 | { | |
f8a0e364 RS |
544 | /* Set up the user name info if we didn't do it before. |
545 | (That can happen if Emacs is dumpable | |
546 | but you decide to run `temacs -l loadup' and not dump. */ | |
35b34f72 | 547 | if (INTEGERP (Vuser_login_name)) |
f8a0e364 | 548 | init_editfns (); |
35b34f72 | 549 | return Vuser_real_login_name; |
35692fe0 JB |
550 | } |
551 | ||
552 | DEFUN ("user-uid", Fuser_uid, Suser_uid, 0, 0, 0, | |
553 | "Return the effective uid of Emacs, as an integer.") | |
554 | () | |
555 | { | |
556 | return make_number (geteuid ()); | |
557 | } | |
558 | ||
559 | DEFUN ("user-real-uid", Fuser_real_uid, Suser_real_uid, 0, 0, 0, | |
560 | "Return the real uid of Emacs, as an integer.") | |
561 | () | |
562 | { | |
563 | return make_number (getuid ()); | |
564 | } | |
565 | ||
c9ed721d RS |
566 | DEFUN ("user-full-name", Fuser_full_name, Suser_full_name, 0, 1, 0, |
567 | "Return the full name of the user logged in, as a string.\n\ | |
568 | If optional argument UID is an integer, return the full name of the user\n\ | |
3415b0e9 RS |
569 | with that uid, or \"unknown\" if there is no such user. |
570 | If UID is a string, return the full name of the user with that login\n\ | |
571 | name, or \"unknown\" if no such user could be found.") | |
c9ed721d RS |
572 | (uid) |
573 | Lisp_Object uid; | |
35692fe0 | 574 | { |
c9ed721d | 575 | struct passwd *pw; |
3415b0e9 RS |
576 | register char *p, *q; |
577 | extern char *index (); | |
578 | Lisp_Object full; | |
c9ed721d RS |
579 | |
580 | if (NILP (uid)) | |
3415b0e9 RS |
581 | return Vuser_full_name; |
582 | else if (NUMBERP (uid)) | |
583 | pw = (struct passwd *) getpwuid (XINT (uid)); | |
584 | else if (STRINGP (uid)) | |
585 | pw = (struct passwd *) getpwnam (XSTRING (uid)->data); | |
586 | else | |
587 | error ("Invalid UID specification"); | |
c9ed721d | 588 | |
3415b0e9 | 589 | if (!pw) |
3347526c | 590 | return Qnil; |
3415b0e9 RS |
591 | |
592 | p = (unsigned char *) USER_FULL_NAME; | |
593 | /* Chop off everything after the first comma. */ | |
594 | q = (unsigned char *) index (p, ','); | |
595 | full = make_string (p, q ? q - p : strlen (p)); | |
596 | ||
597 | #ifdef AMPERSAND_FULL_NAME | |
598 | p = XSTRING (full)->data; | |
599 | q = (unsigned char *) index (p, '&'); | |
600 | /* Substitute the login name for the &, upcasing the first character. */ | |
601 | if (q) | |
602 | { | |
603 | register char *r; | |
604 | Lisp_Object login; | |
605 | ||
606 | login = Fuser_login_name (make_number (pw->pw_uid)); | |
607 | r = (unsigned char *) alloca (strlen (p) + XSTRING (login)->size + 1); | |
608 | bcopy (p, r, q - p); | |
609 | r[q - p] = 0; | |
610 | strcat (r, XSTRING (login)->data); | |
611 | r[q - p] = UPCASE (r[q - p]); | |
612 | strcat (r, q + 1); | |
613 | full = build_string (r); | |
614 | } | |
615 | #endif /* AMPERSAND_FULL_NAME */ | |
616 | ||
617 | return full; | |
35692fe0 JB |
618 | } |
619 | ||
620 | DEFUN ("system-name", Fsystem_name, Ssystem_name, 0, 0, 0, | |
621 | "Return the name of the machine you are running on, as a string.") | |
622 | () | |
623 | { | |
624 | return Vsystem_name; | |
625 | } | |
626 | ||
ac988277 KH |
627 | /* For the benefit of callers who don't want to include lisp.h */ |
628 | char * | |
629 | get_system_name () | |
630 | { | |
316506b2 | 631 | return (char *) XSTRING (Vsystem_name)->data; |
ac988277 KH |
632 | } |
633 | ||
7fd233b3 RS |
634 | DEFUN ("emacs-pid", Femacs_pid, Semacs_pid, 0, 0, 0, |
635 | "Return the process ID of Emacs, as an integer.") | |
636 | () | |
637 | { | |
638 | return make_number (getpid ()); | |
639 | } | |
640 | ||
d940e0e4 | 641 | DEFUN ("current-time", Fcurrent_time, Scurrent_time, 0, 0, 0, |
e983fdb2 | 642 | "Return the current time, as the number of seconds since 1970-01-01 00:00:00.\n\ |
956ace37 JB |
643 | The time is returned as a list of three integers. The first has the\n\ |
644 | most significant 16 bits of the seconds, while the second has the\n\ | |
645 | least significant 16 bits. The third integer gives the microsecond\n\ | |
646 | count.\n\ | |
647 | \n\ | |
648 | The microsecond count is zero on systems that do not provide\n\ | |
649 | resolution finer than a second.") | |
d940e0e4 JB |
650 | () |
651 | { | |
956ace37 JB |
652 | EMACS_TIME t; |
653 | Lisp_Object result[3]; | |
654 | ||
655 | EMACS_GET_TIME (t); | |
d2fd0445 KH |
656 | XSETINT (result[0], (EMACS_SECS (t) >> 16) & 0xffff); |
657 | XSETINT (result[1], (EMACS_SECS (t) >> 0) & 0xffff); | |
658 | XSETINT (result[2], EMACS_USECS (t)); | |
956ace37 JB |
659 | |
660 | return Flist (3, result); | |
d940e0e4 JB |
661 | } |
662 | \f | |
663 | ||
e3120ab5 JB |
664 | static int |
665 | lisp_time_argument (specified_time, result) | |
666 | Lisp_Object specified_time; | |
667 | time_t *result; | |
668 | { | |
669 | if (NILP (specified_time)) | |
670 | return time (result) != -1; | |
671 | else | |
672 | { | |
673 | Lisp_Object high, low; | |
674 | high = Fcar (specified_time); | |
675 | CHECK_NUMBER (high, 0); | |
676 | low = Fcdr (specified_time); | |
ae683129 | 677 | if (CONSP (low)) |
e3120ab5 JB |
678 | low = Fcar (low); |
679 | CHECK_NUMBER (low, 0); | |
680 | *result = (XINT (high) << 16) + (XINT (low) & 0xffff); | |
681 | return *result >> 16 == XINT (high); | |
682 | } | |
683 | } | |
684 | ||
2591ec64 | 685 | DEFUN ("format-time-string", Fformat_time_string, Sformat_time_string, 1, 2, 0, |
a82d387c RS |
686 | "Use FORMAT-STRING to format the time TIME.\n\ |
687 | TIME is specified as (HIGH LOW . IGNORED) or (HIGH . LOW), as from\n\ | |
688 | `current-time' and `file-attributes'.\n\ | |
689 | FORMAT-STRING may contain %-sequences to substitute parts of the time.\n\ | |
690 | %a is replaced by the abbreviated name of the day of week.\n\ | |
691 | %A is replaced by the full name of the day of week.\n\ | |
692 | %b is replaced by the abbreviated name of the month.\n\ | |
693 | %B is replaced by the full name of the month.\n\ | |
efa15de4 | 694 | %c stands for the preferred date/time format of the C locale.\n\ |
a82d387c RS |
695 | %d is replaced by the day of month, zero-padded.\n\ |
696 | %D is a synonym for \"%m/%d/%y\".\n\ | |
697 | %e is replaced by the day of month, blank-padded.\n\ | |
698 | %h is a synonym for \"%b\".\n\ | |
699 | %H is replaced by the hour (00-23).\n\ | |
700 | %I is replaced by the hour (00-12).\n\ | |
701 | %j is replaced by the day of the year (001-366).\n\ | |
702 | %k is replaced by the hour (0-23), blank padded.\n\ | |
703 | %l is replaced by the hour (1-12), blank padded.\n\ | |
704 | %m is replaced by the month (01-12).\n\ | |
d28acb97 | 705 | %M is replaced by the minute (00-59).\n\ |
a82d387c RS |
706 | %n is a synonym for \"\\n\".\n\ |
707 | %p is replaced by AM or PM, as appropriate.\n\ | |
708 | %r is a synonym for \"%I:%M:%S %p\".\n\ | |
709 | %R is a synonym for \"%H:%M\".\n\ | |
d28acb97 | 710 | %S is replaced by the second (00-60).\n\ |
a82d387c RS |
711 | %t is a synonym for \"\\t\".\n\ |
712 | %T is a synonym for \"%H:%M:%S\".\n\ | |
79c0ac7e | 713 | %U is replaced by the week of the year (00-53), first day of week is Sunday.\n\ |
a82d387c | 714 | %w is replaced by the day of week (0-6), Sunday is day 0.\n\ |
79c0ac7e | 715 | %W is replaced by the week of the year (00-53), first day of week is Monday.\n\ |
a82d387c RS |
716 | %x is a locale-specific synonym, which defaults to \"%D\" in the C locale.\n\ |
717 | %X is a locale-specific synonym, which defaults to \"%T\" in the C locale.\n\ | |
718 | %y is replaced by the year without century (00-99).\n\ | |
719 | %Y is replaced by the year with century.\n\ | |
720 | %Z is replaced by the time zone abbreviation.\n\ | |
721 | \n\ | |
57937a87 | 722 | The number of options reflects the `strftime' function.") |
a82d387c RS |
723 | (format_string, time) |
724 | Lisp_Object format_string, time; | |
725 | { | |
726 | time_t value; | |
727 | int size; | |
728 | ||
729 | CHECK_STRING (format_string, 1); | |
730 | ||
731 | if (! lisp_time_argument (time, &value)) | |
732 | error ("Invalid time specification"); | |
733 | ||
734 | /* This is probably enough. */ | |
735 | size = XSTRING (format_string)->size * 6 + 50; | |
736 | ||
737 | while (1) | |
738 | { | |
739 | char *buf = (char *) alloca (size); | |
d28acb97 | 740 | *buf = 1; |
57937a87 | 741 | if (emacs_strftime (buf, size, XSTRING (format_string)->data, |
d28acb97 PE |
742 | localtime (&value)) |
743 | || !*buf) | |
a82d387c RS |
744 | return build_string (buf); |
745 | /* If buffer was too small, make it bigger. */ | |
746 | size *= 2; | |
747 | } | |
748 | } | |
749 | ||
4691c06d RS |
750 | DEFUN ("decode-time", Fdecode_time, Sdecode_time, 0, 1, 0, |
751 | "Decode a time value as (SEC MINUTE HOUR DAY MONTH YEAR DOW DST ZONE).\n\ | |
752 | The optional SPECIFIED-TIME should be a list of (HIGH LOW . IGNORED)\n\ | |
753 | or (HIGH . LOW), as from `current-time' and `file-attributes', or `nil'\n\ | |
754 | to use the current time. The list has the following nine members:\n\ | |
145b0681 RS |
755 | SEC is an integer between 0 and 60; SEC is 60 for a leap second, which\n\ |
756 | only some operating systems support. MINUTE is an integer between 0 and 59.\n\ | |
4691c06d RS |
757 | HOUR is an integer between 0 and 23. DAY is an integer between 1 and 31.\n\ |
758 | MONTH is an integer between 1 and 12. YEAR is an integer indicating the\n\ | |
759 | four-digit year. DOW is the day of week, an integer between 0 and 6, where\n\ | |
760 | 0 is Sunday. DST is t if daylight savings time is effect, otherwise nil.\n\ | |
761 | ZONE is an integer indicating the number of seconds east of Greenwich.\n\ | |
2c6c7c72 | 762 | \(Note that Common Lisp has different meanings for DOW and ZONE.)") |
4691c06d RS |
763 | (specified_time) |
764 | Lisp_Object specified_time; | |
765 | { | |
766 | time_t time_spec; | |
3c887943 | 767 | struct tm save_tm; |
4691c06d RS |
768 | struct tm *decoded_time; |
769 | Lisp_Object list_args[9]; | |
770 | ||
771 | if (! lisp_time_argument (specified_time, &time_spec)) | |
772 | error ("Invalid time specification"); | |
773 | ||
774 | decoded_time = localtime (&time_spec); | |
3c887943 KH |
775 | XSETFASTINT (list_args[0], decoded_time->tm_sec); |
776 | XSETFASTINT (list_args[1], decoded_time->tm_min); | |
777 | XSETFASTINT (list_args[2], decoded_time->tm_hour); | |
778 | XSETFASTINT (list_args[3], decoded_time->tm_mday); | |
779 | XSETFASTINT (list_args[4], decoded_time->tm_mon + 1); | |
236ebf35 | 780 | XSETINT (list_args[5], decoded_time->tm_year + 1900); |
3c887943 | 781 | XSETFASTINT (list_args[6], decoded_time->tm_wday); |
4691c06d | 782 | list_args[7] = (decoded_time->tm_isdst)? Qt : Qnil; |
3c887943 KH |
783 | |
784 | /* Make a copy, in case gmtime modifies the struct. */ | |
785 | save_tm = *decoded_time; | |
786 | decoded_time = gmtime (&time_spec); | |
787 | if (decoded_time == 0) | |
788 | list_args[8] = Qnil; | |
789 | else | |
94751666 | 790 | XSETINT (list_args[8], tm_diff (&save_tm, decoded_time)); |
4691c06d RS |
791 | return Flist (9, list_args); |
792 | } | |
793 | ||
6ee9061c | 794 | DEFUN ("encode-time", Fencode_time, Sencode_time, 6, MANY, 0, |
2591ec64 | 795 | "Convert SECOND, MINUTE, HOUR, DAY, MONTH, YEAR and ZONE to internal time.\n\ |
6ee9061c RS |
796 | This is the reverse operation of `decode-time', which see.\n\ |
797 | ZONE defaults to the current time zone rule. This can\n\ | |
085e9fcb | 798 | be a string or t (as from `set-time-zone-rule'), or it can be a list\n\ |
7459d65b | 799 | \(as from `current-time-zone') or an integer (as from `decode-time')\n\ |
c59b5089 | 800 | applied without consideration for daylight savings time.\n\ |
6ee9061c RS |
801 | \n\ |
802 | You can pass more than 7 arguments; then the first six arguments\n\ | |
803 | are used as SECOND through YEAR, and the *last* argument is used as ZONE.\n\ | |
804 | The intervening arguments are ignored.\n\ | |
805 | This feature lets (apply 'encode-time (decode-time ...)) work.\n\ | |
806 | \n\ | |
c59b5089 PE |
807 | Out-of-range values for SEC, MINUTE, HOUR, DAY, or MONTH are allowed;\n\ |
808 | for example, a DAY of 0 means the day preceding the given month.\n\ | |
01ba8cce | 809 | Year numbers less than 100 are treated just like other year numbers.\n\ |
c59b5089 | 810 | If you want them to stand for years in this century, you must do that yourself.") |
6ee9061c RS |
811 | (nargs, args) |
812 | int nargs; | |
813 | register Lisp_Object *args; | |
cce7b8a0 | 814 | { |
1b8fa736 | 815 | time_t time; |
c59b5089 | 816 | struct tm tm; |
6ee9061c RS |
817 | Lisp_Object zone = (nargs > 6)? args[nargs - 1] : Qnil; |
818 | ||
819 | CHECK_NUMBER (args[0], 0); /* second */ | |
820 | CHECK_NUMBER (args[1], 1); /* minute */ | |
821 | CHECK_NUMBER (args[2], 2); /* hour */ | |
822 | CHECK_NUMBER (args[3], 3); /* day */ | |
823 | CHECK_NUMBER (args[4], 4); /* month */ | |
824 | CHECK_NUMBER (args[5], 5); /* year */ | |
825 | ||
826 | tm.tm_sec = XINT (args[0]); | |
827 | tm.tm_min = XINT (args[1]); | |
828 | tm.tm_hour = XINT (args[2]); | |
829 | tm.tm_mday = XINT (args[3]); | |
830 | tm.tm_mon = XINT (args[4]) - 1; | |
831 | tm.tm_year = XINT (args[5]) - 1900; | |
c59b5089 PE |
832 | tm.tm_isdst = -1; |
833 | ||
834 | if (CONSP (zone)) | |
835 | zone = Fcar (zone); | |
1b8fa736 | 836 | if (NILP (zone)) |
c59b5089 PE |
837 | time = mktime (&tm); |
838 | else | |
1b8fa736 | 839 | { |
c59b5089 PE |
840 | char tzbuf[100]; |
841 | char *tzstring; | |
842 | char **oldenv = environ, **newenv; | |
843 | ||
085e9fcb EN |
844 | if (zone == Qt) |
845 | tzstring = "UTC0"; | |
846 | else if (STRINGP (zone)) | |
4d4c1514 | 847 | tzstring = (char *) XSTRING (zone)->data; |
c59b5089 | 848 | else if (INTEGERP (zone)) |
1b8fa736 | 849 | { |
c59b5089 PE |
850 | int abszone = abs (XINT (zone)); |
851 | sprintf (tzbuf, "XXX%s%d:%02d:%02d", "-" + (XINT (zone) < 0), | |
852 | abszone / (60*60), (abszone/60) % 60, abszone % 60); | |
853 | tzstring = tzbuf; | |
1b8fa736 | 854 | } |
c59b5089 PE |
855 | else |
856 | error ("Invalid time zone specification"); | |
857 | ||
858 | /* Set TZ before calling mktime; merely adjusting mktime's returned | |
859 | value doesn't suffice, since that would mishandle leap seconds. */ | |
860 | set_time_zone_rule (tzstring); | |
861 | ||
862 | time = mktime (&tm); | |
863 | ||
864 | /* Restore TZ to previous value. */ | |
865 | newenv = environ; | |
866 | environ = oldenv; | |
c0efcacf | 867 | xfree (newenv); |
c59b5089 PE |
868 | #ifdef LOCALTIME_CACHE |
869 | tzset (); | |
870 | #endif | |
1b8fa736 | 871 | } |
1b8fa736 | 872 | |
c59b5089 PE |
873 | if (time == (time_t) -1) |
874 | error ("Specified time is not representable"); | |
875 | ||
876 | return make_time (time); | |
cce7b8a0 RS |
877 | } |
878 | ||
2148f2b4 | 879 | DEFUN ("current-time-string", Fcurrent_time_string, Scurrent_time_string, 0, 1, 0, |
35692fe0 | 880 | "Return the current time, as a human-readable string.\n\ |
2148f2b4 RS |
881 | Programs can use this function to decode a time,\n\ |
882 | since the number of columns in each field is fixed.\n\ | |
883 | The format is `Sun Sep 16 01:03:52 1973'.\n\ | |
884 | If an argument is given, it specifies a time to format\n\ | |
885 | instead of the current time. The argument should have the form:\n\ | |
886 | (HIGH . LOW)\n\ | |
887 | or the form:\n\ | |
888 | (HIGH LOW . IGNORED).\n\ | |
889 | Thus, you can use times obtained from `current-time'\n\ | |
890 | and from `file-attributes'.") | |
891 | (specified_time) | |
892 | Lisp_Object specified_time; | |
893 | { | |
e3120ab5 | 894 | time_t value; |
35692fe0 | 895 | char buf[30]; |
2148f2b4 RS |
896 | register char *tem; |
897 | ||
e3120ab5 JB |
898 | if (! lisp_time_argument (specified_time, &value)) |
899 | value = -1; | |
2148f2b4 | 900 | tem = (char *) ctime (&value); |
35692fe0 JB |
901 | |
902 | strncpy (buf, tem, 24); | |
903 | buf[24] = 0; | |
904 | ||
905 | return build_string (buf); | |
906 | } | |
c2662aea | 907 | |
94751666 | 908 | #define TM_YEAR_BASE 1900 |
e3120ab5 | 909 | |
94751666 PE |
910 | /* Yield A - B, measured in seconds. |
911 | This function is copied from the GNU C Library. */ | |
912 | static int | |
913 | tm_diff (a, b) | |
e3120ab5 JB |
914 | struct tm *a, *b; |
915 | { | |
94751666 PE |
916 | /* Compute intervening leap days correctly even if year is negative. |
917 | Take care to avoid int overflow in leap day calculations, | |
918 | but it's OK to assume that A and B are close to each other. */ | |
919 | int a4 = (a->tm_year >> 2) + (TM_YEAR_BASE >> 2) - ! (a->tm_year & 3); | |
920 | int b4 = (b->tm_year >> 2) + (TM_YEAR_BASE >> 2) - ! (b->tm_year & 3); | |
921 | int a100 = a4 / 25 - (a4 % 25 < 0); | |
922 | int b100 = b4 / 25 - (b4 % 25 < 0); | |
923 | int a400 = a100 >> 2; | |
924 | int b400 = b100 >> 2; | |
925 | int intervening_leap_days = (a4 - b4) - (a100 - b100) + (a400 - b400); | |
926 | int years = a->tm_year - b->tm_year; | |
927 | int days = (365 * years + intervening_leap_days | |
928 | + (a->tm_yday - b->tm_yday)); | |
929 | return (60 * (60 * (24 * days + (a->tm_hour - b->tm_hour)) | |
930 | + (a->tm_min - b->tm_min)) | |
8e718b4e | 931 | + (a->tm_sec - b->tm_sec)); |
e3120ab5 JB |
932 | } |
933 | ||
934 | DEFUN ("current-time-zone", Fcurrent_time_zone, Scurrent_time_zone, 0, 1, 0, | |
935 | "Return the offset and name for the local time zone.\n\ | |
936 | This returns a list of the form (OFFSET NAME).\n\ | |
937 | OFFSET is an integer number of seconds ahead of UTC (east of Greenwich).\n\ | |
938 | A negative value means west of Greenwich.\n\ | |
939 | NAME is a string giving the name of the time zone.\n\ | |
940 | If an argument is given, it specifies when the time zone offset is determined\n\ | |
941 | instead of using the current time. The argument should have the form:\n\ | |
942 | (HIGH . LOW)\n\ | |
943 | or the form:\n\ | |
944 | (HIGH LOW . IGNORED).\n\ | |
945 | Thus, you can use times obtained from `current-time'\n\ | |
946 | and from `file-attributes'.\n\ | |
773c1fd3 JB |
947 | \n\ |
948 | Some operating systems cannot provide all this information to Emacs;\n\ | |
2d88f747 | 949 | in this case, `current-time-zone' returns a list containing nil for\n\ |
773c1fd3 | 950 | the data it can't find.") |
e3120ab5 JB |
951 | (specified_time) |
952 | Lisp_Object specified_time; | |
c2662aea | 953 | { |
e3120ab5 JB |
954 | time_t value; |
955 | struct tm *t; | |
c2662aea | 956 | |
e3120ab5 | 957 | if (lisp_time_argument (specified_time, &value) |
2d88f747 | 958 | && (t = gmtime (&value)) != 0) |
e3120ab5 | 959 | { |
2d88f747 | 960 | struct tm gmt; |
94751666 | 961 | int offset; |
e3120ab5 | 962 | char *s, buf[6]; |
2d88f747 RS |
963 | |
964 | gmt = *t; /* Make a copy, in case localtime modifies *t. */ | |
965 | t = localtime (&value); | |
94751666 | 966 | offset = tm_diff (t, &gmt); |
e3120ab5 JB |
967 | s = 0; |
968 | #ifdef HAVE_TM_ZONE | |
969 | if (t->tm_zone) | |
5fd4de15 | 970 | s = (char *)t->tm_zone; |
a7971c39 RS |
971 | #else /* not HAVE_TM_ZONE */ |
972 | #ifdef HAVE_TZNAME | |
973 | if (t->tm_isdst == 0 || t->tm_isdst == 1) | |
974 | s = tzname[t->tm_isdst]; | |
c2662aea | 975 | #endif |
a7971c39 | 976 | #endif /* not HAVE_TM_ZONE */ |
e3120ab5 JB |
977 | if (!s) |
978 | { | |
979 | /* No local time zone name is available; use "+-NNNN" instead. */ | |
00fc94d0 | 980 | int am = (offset < 0 ? -offset : offset) / 60; |
e3120ab5 JB |
981 | sprintf (buf, "%c%02d%02d", (offset < 0 ? '-' : '+'), am/60, am%60); |
982 | s = buf; | |
983 | } | |
984 | return Fcons (make_number (offset), Fcons (build_string (s), Qnil)); | |
985 | } | |
986 | else | |
987 | return Fmake_list (2, Qnil); | |
c2662aea JB |
988 | } |
989 | ||
260e2e2a KH |
990 | /* This holds the value of `environ' produced by the previous |
991 | call to Fset_time_zone_rule, or 0 if Fset_time_zone_rule | |
992 | has never been called. */ | |
993 | static char **environbuf; | |
994 | ||
143cb9a9 RS |
995 | DEFUN ("set-time-zone-rule", Fset_time_zone_rule, Sset_time_zone_rule, 1, 1, 0, |
996 | "Set the local time zone using TZ, a string specifying a time zone rule.\n\ | |
085e9fcb EN |
997 | If TZ is nil, use implementation-defined default time zone information.\n\ |
998 | If TZ is t, use Universal Time.") | |
143cb9a9 RS |
999 | (tz) |
1000 | Lisp_Object tz; | |
1001 | { | |
143cb9a9 RS |
1002 | char *tzstring; |
1003 | ||
1004 | if (NILP (tz)) | |
1005 | tzstring = 0; | |
085e9fcb EN |
1006 | else if (tz == Qt) |
1007 | tzstring = "UTC0"; | |
143cb9a9 RS |
1008 | else |
1009 | { | |
1010 | CHECK_STRING (tz, 0); | |
4d4c1514 | 1011 | tzstring = (char *) XSTRING (tz)->data; |
143cb9a9 RS |
1012 | } |
1013 | ||
c59b5089 PE |
1014 | set_time_zone_rule (tzstring); |
1015 | if (environbuf) | |
1016 | free (environbuf); | |
1017 | environbuf = environ; | |
1018 | ||
1019 | return Qnil; | |
1020 | } | |
1021 | ||
1155c453 RS |
1022 | /* These two values are known to load tz files in buggy implementations. |
1023 | Their values shouldn't matter in non-buggy implementations. | |
1024 | We don't use string literals for these strings, | |
1025 | since if a string in the environment is in readonly | |
1026 | storage, it runs afoul of bugs in SVR4 and Solaris 2.3. | |
1027 | See Sun bugs 1113095 and 1114114, ``Timezone routines | |
1028 | improperly modify environment''. */ | |
1029 | ||
1030 | static char set_time_zone_rule_tz1[] = "TZ=GMT0"; | |
1031 | static char set_time_zone_rule_tz2[] = "TZ=GMT1"; | |
1032 | ||
c59b5089 PE |
1033 | /* Set the local time zone rule to TZSTRING. |
1034 | This allocates memory into `environ', which it is the caller's | |
1035 | responsibility to free. */ | |
a92ae0ce | 1036 | void |
c59b5089 PE |
1037 | set_time_zone_rule (tzstring) |
1038 | char *tzstring; | |
1039 | { | |
1040 | int envptrs; | |
1041 | char **from, **to, **newenv; | |
1042 | ||
aafe5147 | 1043 | /* Make the ENVIRON vector longer with room for TZSTRING. */ |
143cb9a9 RS |
1044 | for (from = environ; *from; from++) |
1045 | continue; | |
1046 | envptrs = from - environ + 2; | |
1047 | newenv = to = (char **) xmalloc (envptrs * sizeof (char *) | |
1048 | + (tzstring ? strlen (tzstring) + 4 : 0)); | |
aafe5147 RS |
1049 | |
1050 | /* Add TZSTRING to the end of environ, as a value for TZ. */ | |
143cb9a9 RS |
1051 | if (tzstring) |
1052 | { | |
1053 | char *t = (char *) (to + envptrs); | |
1054 | strcpy (t, "TZ="); | |
1055 | strcat (t, tzstring); | |
1056 | *to++ = t; | |
1057 | } | |
1058 | ||
aafe5147 RS |
1059 | /* Copy the old environ vector elements into NEWENV, |
1060 | but don't copy the TZ variable. | |
1061 | So we have only one definition of TZ, which came from TZSTRING. */ | |
143cb9a9 RS |
1062 | for (from = environ; *from; from++) |
1063 | if (strncmp (*from, "TZ=", 3) != 0) | |
1064 | *to++ = *from; | |
1065 | *to = 0; | |
1066 | ||
1067 | environ = newenv; | |
143cb9a9 | 1068 | |
aafe5147 RS |
1069 | /* If we do have a TZSTRING, NEWENV points to the vector slot where |
1070 | the TZ variable is stored. If we do not have a TZSTRING, | |
1071 | TO points to the vector slot which has the terminating null. */ | |
1072 | ||
143cb9a9 | 1073 | #ifdef LOCALTIME_CACHE |
aafe5147 RS |
1074 | { |
1075 | /* In SunOS 4.1.3_U1 and 4.1.4, if TZ has a value like | |
1076 | "US/Pacific" that loads a tz file, then changes to a value like | |
1077 | "XXX0" that does not load a tz file, and then changes back to | |
1078 | its original value, the last change is (incorrectly) ignored. | |
1079 | Also, if TZ changes twice in succession to values that do | |
1080 | not load a tz file, tzset can dump core (see Sun bug#1225179). | |
1081 | The following code works around these bugs. */ | |
1082 | ||
aafe5147 RS |
1083 | if (tzstring) |
1084 | { | |
1085 | /* Temporarily set TZ to a value that loads a tz file | |
1086 | and that differs from tzstring. */ | |
1087 | char *tz = *newenv; | |
1155c453 RS |
1088 | *newenv = (strcmp (tzstring, set_time_zone_rule_tz1 + 3) == 0 |
1089 | ? set_time_zone_rule_tz2 : set_time_zone_rule_tz1); | |
aafe5147 RS |
1090 | tzset (); |
1091 | *newenv = tz; | |
1092 | } | |
1093 | else | |
1094 | { | |
1095 | /* The implied tzstring is unknown, so temporarily set TZ to | |
1096 | two different values that each load a tz file. */ | |
1155c453 | 1097 | *to = set_time_zone_rule_tz1; |
aafe5147 RS |
1098 | to[1] = 0; |
1099 | tzset (); | |
1155c453 | 1100 | *to = set_time_zone_rule_tz2; |
aafe5147 RS |
1101 | tzset (); |
1102 | *to = 0; | |
1103 | } | |
1104 | ||
1105 | /* Now TZ has the desired value, and tzset can be invoked safely. */ | |
1106 | } | |
1107 | ||
143cb9a9 RS |
1108 | tzset (); |
1109 | #endif | |
143cb9a9 | 1110 | } |
35692fe0 JB |
1111 | \f |
1112 | void | |
1113 | insert1 (arg) | |
1114 | Lisp_Object arg; | |
1115 | { | |
1116 | Finsert (1, &arg); | |
1117 | } | |
1118 | ||
52b14ac0 JB |
1119 | |
1120 | /* Callers passing one argument to Finsert need not gcpro the | |
1121 | argument "array", since the only element of the array will | |
1122 | not be used after calling insert or insert_from_string, so | |
1123 | we don't care if it gets trashed. */ | |
1124 | ||
35692fe0 JB |
1125 | DEFUN ("insert", Finsert, Sinsert, 0, MANY, 0, |
1126 | "Insert the arguments, either strings or characters, at point.\n\ | |
1127 | Point moves forward so that it ends up after the inserted text.\n\ | |
1128 | Any other markers at the point of insertion remain before the text.") | |
1129 | (nargs, args) | |
1130 | int nargs; | |
1131 | register Lisp_Object *args; | |
1132 | { | |
1133 | register int argnum; | |
1134 | register Lisp_Object tem; | |
1135 | char str[1]; | |
35692fe0 JB |
1136 | |
1137 | for (argnum = 0; argnum < nargs; argnum++) | |
1138 | { | |
1139 | tem = args[argnum]; | |
1140 | retry: | |
ae683129 | 1141 | if (INTEGERP (tem)) |
35692fe0 JB |
1142 | { |
1143 | str[0] = XINT (tem); | |
1144 | insert (str, 1); | |
1145 | } | |
ae683129 | 1146 | else if (STRINGP (tem)) |
35692fe0 | 1147 | { |
be91036a RS |
1148 | insert_from_string (tem, 0, XSTRING (tem)->size, 0); |
1149 | } | |
1150 | else | |
1151 | { | |
1152 | tem = wrong_type_argument (Qchar_or_string_p, tem); | |
1153 | goto retry; | |
1154 | } | |
1155 | } | |
1156 | ||
1157 | return Qnil; | |
1158 | } | |
1159 | ||
1160 | DEFUN ("insert-and-inherit", Finsert_and_inherit, Sinsert_and_inherit, | |
1161 | 0, MANY, 0, | |
1162 | "Insert the arguments at point, inheriting properties from adjoining text.\n\ | |
1163 | Point moves forward so that it ends up after the inserted text.\n\ | |
1164 | Any other markers at the point of insertion remain before the text.") | |
1165 | (nargs, args) | |
1166 | int nargs; | |
1167 | register Lisp_Object *args; | |
1168 | { | |
1169 | register int argnum; | |
1170 | register Lisp_Object tem; | |
1171 | char str[1]; | |
1172 | ||
1173 | for (argnum = 0; argnum < nargs; argnum++) | |
1174 | { | |
1175 | tem = args[argnum]; | |
1176 | retry: | |
ae683129 | 1177 | if (INTEGERP (tem)) |
be91036a RS |
1178 | { |
1179 | str[0] = XINT (tem); | |
107740f5 | 1180 | insert_and_inherit (str, 1); |
be91036a | 1181 | } |
ae683129 | 1182 | else if (STRINGP (tem)) |
be91036a RS |
1183 | { |
1184 | insert_from_string (tem, 0, XSTRING (tem)->size, 1); | |
35692fe0 JB |
1185 | } |
1186 | else | |
1187 | { | |
1188 | tem = wrong_type_argument (Qchar_or_string_p, tem); | |
1189 | goto retry; | |
1190 | } | |
1191 | } | |
1192 | ||
35692fe0 JB |
1193 | return Qnil; |
1194 | } | |
1195 | ||
1196 | DEFUN ("insert-before-markers", Finsert_before_markers, Sinsert_before_markers, 0, MANY, 0, | |
1197 | "Insert strings or characters at point, relocating markers after the text.\n\ | |
1198 | Point moves forward so that it ends up after the inserted text.\n\ | |
1199 | Any other markers at the point of insertion also end up after the text.") | |
1200 | (nargs, args) | |
1201 | int nargs; | |
1202 | register Lisp_Object *args; | |
1203 | { | |
1204 | register int argnum; | |
1205 | register Lisp_Object tem; | |
1206 | char str[1]; | |
35692fe0 JB |
1207 | |
1208 | for (argnum = 0; argnum < nargs; argnum++) | |
1209 | { | |
1210 | tem = args[argnum]; | |
1211 | retry: | |
ae683129 | 1212 | if (INTEGERP (tem)) |
35692fe0 JB |
1213 | { |
1214 | str[0] = XINT (tem); | |
1215 | insert_before_markers (str, 1); | |
1216 | } | |
ae683129 | 1217 | else if (STRINGP (tem)) |
35692fe0 | 1218 | { |
be91036a RS |
1219 | insert_from_string_before_markers (tem, 0, XSTRING (tem)->size, 0); |
1220 | } | |
1221 | else | |
1222 | { | |
1223 | tem = wrong_type_argument (Qchar_or_string_p, tem); | |
1224 | goto retry; | |
1225 | } | |
1226 | } | |
1227 | ||
1228 | return Qnil; | |
1229 | } | |
1230 | ||
a0d76c27 EN |
1231 | DEFUN ("insert-before-markers-and-inherit", Finsert_and_inherit_before_markers, |
1232 | Sinsert_and_inherit_before_markers, 0, MANY, 0, | |
be91036a RS |
1233 | "Insert text at point, relocating markers and inheriting properties.\n\ |
1234 | Point moves forward so that it ends up after the inserted text.\n\ | |
1235 | Any other markers at the point of insertion also end up after the text.") | |
1236 | (nargs, args) | |
1237 | int nargs; | |
1238 | register Lisp_Object *args; | |
1239 | { | |
1240 | register int argnum; | |
1241 | register Lisp_Object tem; | |
1242 | char str[1]; | |
1243 | ||
1244 | for (argnum = 0; argnum < nargs; argnum++) | |
1245 | { | |
1246 | tem = args[argnum]; | |
1247 | retry: | |
ae683129 | 1248 | if (INTEGERP (tem)) |
be91036a RS |
1249 | { |
1250 | str[0] = XINT (tem); | |
107740f5 | 1251 | insert_before_markers_and_inherit (str, 1); |
be91036a | 1252 | } |
ae683129 | 1253 | else if (STRINGP (tem)) |
be91036a RS |
1254 | { |
1255 | insert_from_string_before_markers (tem, 0, XSTRING (tem)->size, 1); | |
35692fe0 JB |
1256 | } |
1257 | else | |
1258 | { | |
1259 | tem = wrong_type_argument (Qchar_or_string_p, tem); | |
1260 | goto retry; | |
1261 | } | |
1262 | } | |
1263 | ||
35692fe0 JB |
1264 | return Qnil; |
1265 | } | |
1266 | \f | |
e2eeabbb | 1267 | DEFUN ("insert-char", Finsert_char, Sinsert_char, 2, 3, 0, |
2591ec64 | 1268 | "Insert COUNT (second arg) copies of CHARACTER (first arg).\n\ |
35692fe0 | 1269 | Point and all markers are affected as in the function `insert'.\n\ |
e2eeabbb RS |
1270 | Both arguments are required.\n\ |
1271 | The optional third arg INHERIT, if non-nil, says to inherit text properties\n\ | |
1272 | from adjoining text, if those properties are sticky.") | |
2591ec64 EN |
1273 | (character, count, inherit) |
1274 | Lisp_Object character, count, inherit; | |
35692fe0 JB |
1275 | { |
1276 | register unsigned char *string; | |
1277 | register int strlen; | |
1278 | register int i, n; | |
1279 | ||
2591ec64 | 1280 | CHECK_NUMBER (character, 0); |
35692fe0 JB |
1281 | CHECK_NUMBER (count, 1); |
1282 | ||
1283 | n = XINT (count); | |
1284 | if (n <= 0) | |
1285 | return Qnil; | |
1286 | strlen = min (n, 256); | |
1287 | string = (unsigned char *) alloca (strlen); | |
1288 | for (i = 0; i < strlen; i++) | |
2591ec64 | 1289 | string[i] = XFASTINT (character); |
35692fe0 JB |
1290 | while (n >= strlen) |
1291 | { | |
e2eeabbb RS |
1292 | if (!NILP (inherit)) |
1293 | insert_and_inherit (string, strlen); | |
1294 | else | |
1295 | insert (string, strlen); | |
35692fe0 JB |
1296 | n -= strlen; |
1297 | } | |
1298 | if (n > 0) | |
83951f1e KH |
1299 | { |
1300 | if (!NILP (inherit)) | |
1301 | insert_and_inherit (string, n); | |
1302 | else | |
1303 | insert (string, n); | |
1304 | } | |
35692fe0 JB |
1305 | return Qnil; |
1306 | } | |
1307 | ||
1308 | \f | |
ffd56f97 JB |
1309 | /* Making strings from buffer contents. */ |
1310 | ||
1311 | /* Return a Lisp_String containing the text of the current buffer from | |
74d6d8c5 | 1312 | START to END. If text properties are in use and the current buffer |
eb8c3be9 | 1313 | has properties in the range specified, the resulting string will also |
260e2e2a | 1314 | have them, if PROPS is nonzero. |
ffd56f97 JB |
1315 | |
1316 | We don't want to use plain old make_string here, because it calls | |
1317 | make_uninit_string, which can cause the buffer arena to be | |
1318 | compacted. make_string has no way of knowing that the data has | |
1319 | been moved, and thus copies the wrong data into the string. This | |
1320 | doesn't effect most of the other users of make_string, so it should | |
1321 | be left as is. But we should use this function when conjuring | |
1322 | buffer substrings. */ | |
74d6d8c5 | 1323 | |
ffd56f97 | 1324 | Lisp_Object |
260e2e2a | 1325 | make_buffer_string (start, end, props) |
ffd56f97 | 1326 | int start, end; |
260e2e2a | 1327 | int props; |
ffd56f97 | 1328 | { |
36b0d50e | 1329 | Lisp_Object result, tem, tem1; |
ffd56f97 JB |
1330 | |
1331 | if (start < GPT && GPT < end) | |
1332 | move_gap (start); | |
1333 | ||
1334 | result = make_uninit_string (end - start); | |
1335 | bcopy (&FETCH_CHAR (start), XSTRING (result)->data, end - start); | |
1336 | ||
260e2e2a | 1337 | /* If desired, update and copy the text properties. */ |
60b96ee7 | 1338 | #ifdef USE_TEXT_PROPERTIES |
260e2e2a KH |
1339 | if (props) |
1340 | { | |
1341 | update_buffer_properties (start, end); | |
1342 | ||
1343 | tem = Fnext_property_change (make_number (start), Qnil, make_number (end)); | |
1344 | tem1 = Ftext_properties_at (make_number (start), Qnil); | |
1345 | ||
1346 | if (XINT (tem) != end || !NILP (tem1)) | |
1347 | copy_intervals_to_string (result, current_buffer, start, end - start); | |
1348 | } | |
60b96ee7 | 1349 | #endif |
74d6d8c5 | 1350 | |
ffd56f97 JB |
1351 | return result; |
1352 | } | |
35692fe0 | 1353 | |
260e2e2a KH |
1354 | /* Call Vbuffer_access_fontify_functions for the range START ... END |
1355 | in the current buffer, if necessary. */ | |
1356 | ||
1357 | static void | |
1358 | update_buffer_properties (start, end) | |
1359 | int start, end; | |
1360 | { | |
1361 | #ifdef USE_TEXT_PROPERTIES | |
1362 | /* If this buffer has some access functions, | |
1363 | call them, specifying the range of the buffer being accessed. */ | |
1364 | if (!NILP (Vbuffer_access_fontify_functions)) | |
1365 | { | |
1366 | Lisp_Object args[3]; | |
1367 | Lisp_Object tem; | |
1368 | ||
1369 | args[0] = Qbuffer_access_fontify_functions; | |
1370 | XSETINT (args[1], start); | |
1371 | XSETINT (args[2], end); | |
1372 | ||
1373 | /* But don't call them if we can tell that the work | |
1374 | has already been done. */ | |
1375 | if (!NILP (Vbuffer_access_fontified_property)) | |
1376 | { | |
1377 | tem = Ftext_property_any (args[1], args[2], | |
1378 | Vbuffer_access_fontified_property, | |
1379 | Qnil, Qnil); | |
1380 | if (! NILP (tem)) | |
ced1d19a | 1381 | Frun_hook_with_args (3, args); |
260e2e2a KH |
1382 | } |
1383 | else | |
ced1d19a | 1384 | Frun_hook_with_args (3, args); |
260e2e2a KH |
1385 | } |
1386 | #endif | |
1387 | } | |
1388 | ||
35692fe0 JB |
1389 | DEFUN ("buffer-substring", Fbuffer_substring, Sbuffer_substring, 2, 2, 0, |
1390 | "Return the contents of part of the current buffer as a string.\n\ | |
1391 | The two arguments START and END are character positions;\n\ | |
1392 | they can be in either order.") | |
2591ec64 EN |
1393 | (start, end) |
1394 | Lisp_Object start, end; | |
35692fe0 | 1395 | { |
2591ec64 | 1396 | register int b, e; |
35692fe0 | 1397 | |
2591ec64 EN |
1398 | validate_region (&start, &end); |
1399 | b = XINT (start); | |
1400 | e = XINT (end); | |
35692fe0 | 1401 | |
2591ec64 | 1402 | return make_buffer_string (b, e, 1); |
260e2e2a KH |
1403 | } |
1404 | ||
1405 | DEFUN ("buffer-substring-no-properties", Fbuffer_substring_no_properties, | |
1406 | Sbuffer_substring_no_properties, 2, 2, 0, | |
1407 | "Return the characters of part of the buffer, without the text properties.\n\ | |
1408 | The two arguments START and END are character positions;\n\ | |
1409 | they can be in either order.") | |
2591ec64 EN |
1410 | (start, end) |
1411 | Lisp_Object start, end; | |
260e2e2a | 1412 | { |
2591ec64 | 1413 | register int b, e; |
260e2e2a | 1414 | |
2591ec64 EN |
1415 | validate_region (&start, &end); |
1416 | b = XINT (start); | |
1417 | e = XINT (end); | |
260e2e2a | 1418 | |
2591ec64 | 1419 | return make_buffer_string (b, e, 0); |
35692fe0 JB |
1420 | } |
1421 | ||
1422 | DEFUN ("buffer-string", Fbuffer_string, Sbuffer_string, 0, 0, 0, | |
af7bd86c KH |
1423 | "Return the contents of the current buffer as a string.\n\ |
1424 | If narrowing is in effect, this function returns only the visible part\n\ | |
1425 | of the buffer.") | |
35692fe0 JB |
1426 | () |
1427 | { | |
260e2e2a | 1428 | return make_buffer_string (BEGV, ZV, 1); |
35692fe0 JB |
1429 | } |
1430 | ||
1431 | DEFUN ("insert-buffer-substring", Finsert_buffer_substring, Sinsert_buffer_substring, | |
1432 | 1, 3, 0, | |
83ea6fc2 | 1433 | "Insert before point a substring of the contents of buffer BUFFER.\n\ |
35692fe0 JB |
1434 | BUFFER may be a buffer or a buffer name.\n\ |
1435 | Arguments START and END are character numbers specifying the substring.\n\ | |
1436 | They default to the beginning and the end of BUFFER.") | |
2591ec64 EN |
1437 | (buf, start, end) |
1438 | Lisp_Object buf, start, end; | |
35692fe0 | 1439 | { |
2591ec64 | 1440 | register int b, e, temp; |
260e2e2a | 1441 | register struct buffer *bp, *obuf; |
3fff2dfa | 1442 | Lisp_Object buffer; |
35692fe0 | 1443 | |
3fff2dfa RS |
1444 | buffer = Fget_buffer (buf); |
1445 | if (NILP (buffer)) | |
1446 | nsberror (buf); | |
1447 | bp = XBUFFER (buffer); | |
93b62e82 KH |
1448 | if (NILP (bp->name)) |
1449 | error ("Selecting deleted buffer"); | |
35692fe0 | 1450 | |
2591ec64 EN |
1451 | if (NILP (start)) |
1452 | b = BUF_BEGV (bp); | |
35692fe0 JB |
1453 | else |
1454 | { | |
2591ec64 EN |
1455 | CHECK_NUMBER_COERCE_MARKER (start, 0); |
1456 | b = XINT (start); | |
35692fe0 | 1457 | } |
2591ec64 EN |
1458 | if (NILP (end)) |
1459 | e = BUF_ZV (bp); | |
35692fe0 JB |
1460 | else |
1461 | { | |
2591ec64 EN |
1462 | CHECK_NUMBER_COERCE_MARKER (end, 1); |
1463 | e = XINT (end); | |
35692fe0 JB |
1464 | } |
1465 | ||
2591ec64 EN |
1466 | if (b > e) |
1467 | temp = b, b = e, e = temp; | |
35692fe0 | 1468 | |
2591ec64 EN |
1469 | if (!(BUF_BEGV (bp) <= b && e <= BUF_ZV (bp))) |
1470 | args_out_of_range (start, end); | |
35692fe0 | 1471 | |
260e2e2a KH |
1472 | obuf = current_buffer; |
1473 | set_buffer_internal_1 (bp); | |
2591ec64 | 1474 | update_buffer_properties (b, e); |
260e2e2a KH |
1475 | set_buffer_internal_1 (obuf); |
1476 | ||
2591ec64 | 1477 | insert_from_buffer (bp, b, e - b, 0); |
35692fe0 JB |
1478 | return Qnil; |
1479 | } | |
e9cf2084 RS |
1480 | |
1481 | DEFUN ("compare-buffer-substrings", Fcompare_buffer_substrings, Scompare_buffer_substrings, | |
1482 | 6, 6, 0, | |
1483 | "Compare two substrings of two buffers; return result as number.\n\ | |
1484 | the value is -N if first string is less after N-1 chars,\n\ | |
1485 | +N if first string is greater after N-1 chars, or 0 if strings match.\n\ | |
1486 | Each substring is represented as three arguments: BUFFER, START and END.\n\ | |
1487 | That makes six args in all, three for each substring.\n\n\ | |
1488 | The value of `case-fold-search' in the current buffer\n\ | |
1489 | determines whether case is significant or ignored.") | |
1490 | (buffer1, start1, end1, buffer2, start2, end2) | |
1491 | Lisp_Object buffer1, start1, end1, buffer2, start2, end2; | |
1492 | { | |
1493 | register int begp1, endp1, begp2, endp2, temp, len1, len2, length, i; | |
1494 | register struct buffer *bp1, *bp2; | |
2a8b0ff0 | 1495 | register Lisp_Object *trt |
e9cf2084 | 1496 | = (!NILP (current_buffer->case_fold_search) |
2a8b0ff0 | 1497 | ? XCHAR_TABLE (current_buffer->case_canon_table)->contents : 0); |
e9cf2084 RS |
1498 | |
1499 | /* Find the first buffer and its substring. */ | |
1500 | ||
1501 | if (NILP (buffer1)) | |
1502 | bp1 = current_buffer; | |
1503 | else | |
1504 | { | |
3fff2dfa RS |
1505 | Lisp_Object buf1; |
1506 | buf1 = Fget_buffer (buffer1); | |
1507 | if (NILP (buf1)) | |
1508 | nsberror (buffer1); | |
1509 | bp1 = XBUFFER (buf1); | |
93b62e82 KH |
1510 | if (NILP (bp1->name)) |
1511 | error ("Selecting deleted buffer"); | |
e9cf2084 RS |
1512 | } |
1513 | ||
1514 | if (NILP (start1)) | |
1515 | begp1 = BUF_BEGV (bp1); | |
1516 | else | |
1517 | { | |
1518 | CHECK_NUMBER_COERCE_MARKER (start1, 1); | |
1519 | begp1 = XINT (start1); | |
1520 | } | |
1521 | if (NILP (end1)) | |
1522 | endp1 = BUF_ZV (bp1); | |
1523 | else | |
1524 | { | |
1525 | CHECK_NUMBER_COERCE_MARKER (end1, 2); | |
1526 | endp1 = XINT (end1); | |
1527 | } | |
1528 | ||
1529 | if (begp1 > endp1) | |
1530 | temp = begp1, begp1 = endp1, endp1 = temp; | |
1531 | ||
1532 | if (!(BUF_BEGV (bp1) <= begp1 | |
1533 | && begp1 <= endp1 | |
1534 | && endp1 <= BUF_ZV (bp1))) | |
1535 | args_out_of_range (start1, end1); | |
1536 | ||
1537 | /* Likewise for second substring. */ | |
1538 | ||
1539 | if (NILP (buffer2)) | |
1540 | bp2 = current_buffer; | |
1541 | else | |
1542 | { | |
3fff2dfa RS |
1543 | Lisp_Object buf2; |
1544 | buf2 = Fget_buffer (buffer2); | |
1545 | if (NILP (buf2)) | |
1546 | nsberror (buffer2); | |
3b1fdd85 | 1547 | bp2 = XBUFFER (buf2); |
93b62e82 KH |
1548 | if (NILP (bp2->name)) |
1549 | error ("Selecting deleted buffer"); | |
e9cf2084 RS |
1550 | } |
1551 | ||
1552 | if (NILP (start2)) | |
1553 | begp2 = BUF_BEGV (bp2); | |
1554 | else | |
1555 | { | |
1556 | CHECK_NUMBER_COERCE_MARKER (start2, 4); | |
1557 | begp2 = XINT (start2); | |
1558 | } | |
1559 | if (NILP (end2)) | |
1560 | endp2 = BUF_ZV (bp2); | |
1561 | else | |
1562 | { | |
1563 | CHECK_NUMBER_COERCE_MARKER (end2, 5); | |
1564 | endp2 = XINT (end2); | |
1565 | } | |
1566 | ||
1567 | if (begp2 > endp2) | |
1568 | temp = begp2, begp2 = endp2, endp2 = temp; | |
1569 | ||
1570 | if (!(BUF_BEGV (bp2) <= begp2 | |
1571 | && begp2 <= endp2 | |
1572 | && endp2 <= BUF_ZV (bp2))) | |
1573 | args_out_of_range (start2, end2); | |
1574 | ||
1575 | len1 = endp1 - begp1; | |
1576 | len2 = endp2 - begp2; | |
1577 | length = len1; | |
1578 | if (len2 < length) | |
1579 | length = len2; | |
1580 | ||
1581 | for (i = 0; i < length; i++) | |
1582 | { | |
1583 | int c1 = *BUF_CHAR_ADDRESS (bp1, begp1 + i); | |
1584 | int c2 = *BUF_CHAR_ADDRESS (bp2, begp2 + i); | |
1585 | if (trt) | |
1586 | { | |
1587 | c1 = trt[c1]; | |
1588 | c2 = trt[c2]; | |
1589 | } | |
1590 | if (c1 < c2) | |
1591 | return make_number (- 1 - i); | |
1592 | if (c1 > c2) | |
1593 | return make_number (i + 1); | |
1594 | } | |
1595 | ||
1596 | /* The strings match as far as they go. | |
1597 | If one is shorter, that one is less. */ | |
1598 | if (length < len1) | |
1599 | return make_number (length + 1); | |
1600 | else if (length < len2) | |
1601 | return make_number (- length - 1); | |
1602 | ||
1603 | /* Same length too => they are equal. */ | |
1604 | return make_number (0); | |
1605 | } | |
35692fe0 | 1606 | \f |
d5a539cd RS |
1607 | static Lisp_Object |
1608 | subst_char_in_region_unwind (arg) | |
1609 | Lisp_Object arg; | |
1610 | { | |
1611 | return current_buffer->undo_list = arg; | |
1612 | } | |
1613 | ||
c8e76b47 RS |
1614 | static Lisp_Object |
1615 | subst_char_in_region_unwind_1 (arg) | |
1616 | Lisp_Object arg; | |
1617 | { | |
1618 | return current_buffer->filename = arg; | |
1619 | } | |
1620 | ||
35692fe0 JB |
1621 | DEFUN ("subst-char-in-region", Fsubst_char_in_region, |
1622 | Ssubst_char_in_region, 4, 5, 0, | |
1623 | "From START to END, replace FROMCHAR with TOCHAR each time it occurs.\n\ | |
1624 | If optional arg NOUNDO is non-nil, don't record this change for undo\n\ | |
1625 | and don't mark the buffer as really changed.") | |
1626 | (start, end, fromchar, tochar, noundo) | |
1627 | Lisp_Object start, end, fromchar, tochar, noundo; | |
1628 | { | |
1629 | register int pos, stop, look; | |
60b96ee7 | 1630 | int changed = 0; |
d5a539cd | 1631 | int count = specpdl_ptr - specpdl; |
35692fe0 JB |
1632 | |
1633 | validate_region (&start, &end); | |
1634 | CHECK_NUMBER (fromchar, 2); | |
1635 | CHECK_NUMBER (tochar, 3); | |
1636 | ||
1637 | pos = XINT (start); | |
1638 | stop = XINT (end); | |
1639 | look = XINT (fromchar); | |
1640 | ||
d5a539cd RS |
1641 | /* If we don't want undo, turn off putting stuff on the list. |
1642 | That's faster than getting rid of things, | |
c8e76b47 RS |
1643 | and it prevents even the entry for a first change. |
1644 | Also inhibit locking the file. */ | |
d5a539cd RS |
1645 | if (!NILP (noundo)) |
1646 | { | |
1647 | record_unwind_protect (subst_char_in_region_unwind, | |
1648 | current_buffer->undo_list); | |
1649 | current_buffer->undo_list = Qt; | |
c8e76b47 RS |
1650 | /* Don't do file-locking. */ |
1651 | record_unwind_protect (subst_char_in_region_unwind_1, | |
1652 | current_buffer->filename); | |
1653 | current_buffer->filename = Qnil; | |
d5a539cd RS |
1654 | } |
1655 | ||
35692fe0 JB |
1656 | while (pos < stop) |
1657 | { | |
1658 | if (FETCH_CHAR (pos) == look) | |
1659 | { | |
60b96ee7 RS |
1660 | if (! changed) |
1661 | { | |
1662 | modify_region (current_buffer, XINT (start), stop); | |
7653d030 RS |
1663 | |
1664 | if (! NILP (noundo)) | |
1665 | { | |
1e158d25 RS |
1666 | if (MODIFF - 1 == SAVE_MODIFF) |
1667 | SAVE_MODIFF++; | |
7653d030 RS |
1668 | if (MODIFF - 1 == current_buffer->auto_save_modified) |
1669 | current_buffer->auto_save_modified++; | |
1670 | } | |
1671 | ||
1672 | changed = 1; | |
60b96ee7 RS |
1673 | } |
1674 | ||
56a98455 | 1675 | if (NILP (noundo)) |
35692fe0 JB |
1676 | record_change (pos, 1); |
1677 | FETCH_CHAR (pos) = XINT (tochar); | |
35692fe0 JB |
1678 | } |
1679 | pos++; | |
1680 | } | |
1681 | ||
60b96ee7 RS |
1682 | if (changed) |
1683 | signal_after_change (XINT (start), | |
1684 | stop - XINT (start), stop - XINT (start)); | |
1685 | ||
d5a539cd | 1686 | unbind_to (count, Qnil); |
35692fe0 JB |
1687 | return Qnil; |
1688 | } | |
1689 | ||
1690 | DEFUN ("translate-region", Ftranslate_region, Stranslate_region, 3, 3, 0, | |
1691 | "From START to END, translate characters according to TABLE.\n\ | |
1692 | TABLE is a string; the Nth character in it is the mapping\n\ | |
1693 | for the character with code N. Returns the number of characters changed.") | |
1694 | (start, end, table) | |
1695 | Lisp_Object start; | |
1696 | Lisp_Object end; | |
1697 | register Lisp_Object table; | |
1698 | { | |
1699 | register int pos, stop; /* Limits of the region. */ | |
1700 | register unsigned char *tt; /* Trans table. */ | |
1701 | register int oc; /* Old character. */ | |
1702 | register int nc; /* New character. */ | |
1703 | int cnt; /* Number of changes made. */ | |
1704 | Lisp_Object z; /* Return. */ | |
1705 | int size; /* Size of translate table. */ | |
1706 | ||
1707 | validate_region (&start, &end); | |
1708 | CHECK_STRING (table, 2); | |
1709 | ||
1710 | size = XSTRING (table)->size; | |
1711 | tt = XSTRING (table)->data; | |
1712 | ||
1713 | pos = XINT (start); | |
1714 | stop = XINT (end); | |
04a759c8 | 1715 | modify_region (current_buffer, pos, stop); |
35692fe0 JB |
1716 | |
1717 | cnt = 0; | |
1718 | for (; pos < stop; ++pos) | |
1719 | { | |
1720 | oc = FETCH_CHAR (pos); | |
1721 | if (oc < size) | |
1722 | { | |
1723 | nc = tt[oc]; | |
1724 | if (nc != oc) | |
1725 | { | |
1726 | record_change (pos, 1); | |
1727 | FETCH_CHAR (pos) = nc; | |
1728 | signal_after_change (pos, 1, 1); | |
1729 | ++cnt; | |
1730 | } | |
1731 | } | |
1732 | } | |
1733 | ||
55561c63 | 1734 | XSETFASTINT (z, cnt); |
35692fe0 JB |
1735 | return (z); |
1736 | } | |
1737 | ||
1738 | DEFUN ("delete-region", Fdelete_region, Sdelete_region, 2, 2, "r", | |
1739 | "Delete the text between point and mark.\n\ | |
1740 | When called from a program, expects two arguments,\n\ | |
1741 | positions (integers or markers) specifying the stretch to be deleted.") | |
2591ec64 EN |
1742 | (start, end) |
1743 | Lisp_Object start, end; | |
35692fe0 | 1744 | { |
2591ec64 EN |
1745 | validate_region (&start, &end); |
1746 | del_range (XINT (start), XINT (end)); | |
35692fe0 JB |
1747 | return Qnil; |
1748 | } | |
1749 | \f | |
1750 | DEFUN ("widen", Fwiden, Swiden, 0, 0, "", | |
1751 | "Remove restrictions (narrowing) from current buffer.\n\ | |
1752 | This allows the buffer's full text to be seen and edited.") | |
1753 | () | |
1754 | { | |
1755 | BEGV = BEG; | |
1756 | SET_BUF_ZV (current_buffer, Z); | |
18744e17 | 1757 | current_buffer->clip_changed = 1; |
52b14ac0 JB |
1758 | /* Changing the buffer bounds invalidates any recorded current column. */ |
1759 | invalidate_current_column (); | |
35692fe0 JB |
1760 | return Qnil; |
1761 | } | |
1762 | ||
1763 | DEFUN ("narrow-to-region", Fnarrow_to_region, Snarrow_to_region, 2, 2, "r", | |
1764 | "Restrict editing in this buffer to the current region.\n\ | |
1765 | The rest of the text becomes temporarily invisible and untouchable\n\ | |
1766 | but is not deleted; if you save the buffer in a file, the invisible\n\ | |
1767 | text is included in the file. \\[widen] makes all visible again.\n\ | |
1768 | See also `save-restriction'.\n\ | |
1769 | \n\ | |
1770 | When calling from a program, pass two arguments; positions (integers\n\ | |
1771 | or markers) bounding the text that should remain visible.") | |
2591ec64 EN |
1772 | (start, end) |
1773 | register Lisp_Object start, end; | |
35692fe0 | 1774 | { |
2591ec64 EN |
1775 | CHECK_NUMBER_COERCE_MARKER (start, 0); |
1776 | CHECK_NUMBER_COERCE_MARKER (end, 1); | |
35692fe0 | 1777 | |
2591ec64 | 1778 | if (XINT (start) > XINT (end)) |
35692fe0 | 1779 | { |
b5a6948e | 1780 | Lisp_Object tem; |
2591ec64 | 1781 | tem = start; start = end; end = tem; |
35692fe0 JB |
1782 | } |
1783 | ||
2591ec64 EN |
1784 | if (!(BEG <= XINT (start) && XINT (start) <= XINT (end) && XINT (end) <= Z)) |
1785 | args_out_of_range (start, end); | |
35692fe0 | 1786 | |
2591ec64 EN |
1787 | BEGV = XFASTINT (start); |
1788 | SET_BUF_ZV (current_buffer, XFASTINT (end)); | |
6ec8bbd2 | 1789 | if (PT < XFASTINT (start)) |
2591ec64 | 1790 | SET_PT (XFASTINT (start)); |
6ec8bbd2 | 1791 | if (PT > XFASTINT (end)) |
2591ec64 | 1792 | SET_PT (XFASTINT (end)); |
18744e17 | 1793 | current_buffer->clip_changed = 1; |
52b14ac0 JB |
1794 | /* Changing the buffer bounds invalidates any recorded current column. */ |
1795 | invalidate_current_column (); | |
35692fe0 JB |
1796 | return Qnil; |
1797 | } | |
1798 | ||
1799 | Lisp_Object | |
1800 | save_restriction_save () | |
1801 | { | |
1802 | register Lisp_Object bottom, top; | |
1803 | /* Note: I tried using markers here, but it does not win | |
1804 | because insertion at the end of the saved region | |
1805 | does not advance mh and is considered "outside" the saved region. */ | |
55561c63 KH |
1806 | XSETFASTINT (bottom, BEGV - BEG); |
1807 | XSETFASTINT (top, Z - ZV); | |
35692fe0 JB |
1808 | |
1809 | return Fcons (Fcurrent_buffer (), Fcons (bottom, top)); | |
1810 | } | |
1811 | ||
1812 | Lisp_Object | |
1813 | save_restriction_restore (data) | |
1814 | Lisp_Object data; | |
1815 | { | |
1816 | register struct buffer *buf; | |
1817 | register int newhead, newtail; | |
1818 | register Lisp_Object tem; | |
1819 | ||
1820 | buf = XBUFFER (XCONS (data)->car); | |
1821 | ||
1822 | data = XCONS (data)->cdr; | |
1823 | ||
1824 | tem = XCONS (data)->car; | |
1825 | newhead = XINT (tem); | |
1826 | tem = XCONS (data)->cdr; | |
1827 | newtail = XINT (tem); | |
1828 | if (newhead + newtail > BUF_Z (buf) - BUF_BEG (buf)) | |
1829 | { | |
1830 | newhead = 0; | |
1831 | newtail = 0; | |
1832 | } | |
1833 | BUF_BEGV (buf) = BUF_BEG (buf) + newhead; | |
1834 | SET_BUF_ZV (buf, BUF_Z (buf) - newtail); | |
18744e17 | 1835 | current_buffer->clip_changed = 1; |
35692fe0 JB |
1836 | |
1837 | /* If point is outside the new visible range, move it inside. */ | |
1838 | SET_BUF_PT (buf, | |
1839 | clip_to_bounds (BUF_BEGV (buf), BUF_PT (buf), BUF_ZV (buf))); | |
1840 | ||
1841 | return Qnil; | |
1842 | } | |
1843 | ||
1844 | DEFUN ("save-restriction", Fsave_restriction, Ssave_restriction, 0, UNEVALLED, 0, | |
1845 | "Execute BODY, saving and restoring current buffer's restrictions.\n\ | |
1846 | The buffer's restrictions make parts of the beginning and end invisible.\n\ | |
1847 | \(They are set up with `narrow-to-region' and eliminated with `widen'.)\n\ | |
1848 | This special form, `save-restriction', saves the current buffer's restrictions\n\ | |
1849 | when it is entered, and restores them when it is exited.\n\ | |
1850 | So any `narrow-to-region' within BODY lasts only until the end of the form.\n\ | |
1851 | The old restrictions settings are restored\n\ | |
1852 | even in case of abnormal exit (throw or error).\n\ | |
1853 | \n\ | |
1854 | The value returned is the value of the last form in BODY.\n\ | |
1855 | \n\ | |
1856 | `save-restriction' can get confused if, within the BODY, you widen\n\ | |
1857 | and then make changes outside the area within the saved restrictions.\n\ | |
1858 | \n\ | |
1859 | Note: if you are using both `save-excursion' and `save-restriction',\n\ | |
1860 | use `save-excursion' outermost:\n\ | |
1861 | (save-excursion (save-restriction ...))") | |
1862 | (body) | |
1863 | Lisp_Object body; | |
1864 | { | |
1865 | register Lisp_Object val; | |
1866 | int count = specpdl_ptr - specpdl; | |
1867 | ||
1868 | record_unwind_protect (save_restriction_restore, save_restriction_save ()); | |
1869 | val = Fprogn (body); | |
1870 | return unbind_to (count, val); | |
1871 | } | |
1872 | \f | |
671fbc4d KH |
1873 | /* Buffer for the most recent text displayed by Fmessage. */ |
1874 | static char *message_text; | |
1875 | ||
1876 | /* Allocated length of that buffer. */ | |
1877 | static int message_length; | |
1878 | ||
35692fe0 JB |
1879 | DEFUN ("message", Fmessage, Smessage, 1, MANY, 0, |
1880 | "Print a one-line message at the bottom of the screen.\n\ | |
98fc5c3c RS |
1881 | The first argument is a format control string, and the rest are data\n\ |
1882 | to be formatted under control of the string. See `format' for details.\n\ | |
1883 | \n\ | |
ccdac5be JB |
1884 | If the first argument is nil, clear any existing message; let the\n\ |
1885 | minibuffer contents show.") | |
35692fe0 JB |
1886 | (nargs, args) |
1887 | int nargs; | |
1888 | Lisp_Object *args; | |
1889 | { | |
ccdac5be | 1890 | if (NILP (args[0])) |
f0250249 JB |
1891 | { |
1892 | message (0); | |
1893 | return Qnil; | |
1894 | } | |
ccdac5be JB |
1895 | else |
1896 | { | |
1897 | register Lisp_Object val; | |
1898 | val = Fformat (nargs, args); | |
671fbc4d KH |
1899 | /* Copy the data so that it won't move when we GC. */ |
1900 | if (! message_text) | |
1901 | { | |
1902 | message_text = (char *)xmalloc (80); | |
1903 | message_length = 80; | |
1904 | } | |
1905 | if (XSTRING (val)->size > message_length) | |
1906 | { | |
1907 | message_length = XSTRING (val)->size; | |
1908 | message_text = (char *)xrealloc (message_text, message_length); | |
1909 | } | |
1910 | bcopy (XSTRING (val)->data, message_text, XSTRING (val)->size); | |
1911 | message2 (message_text, XSTRING (val)->size); | |
ccdac5be JB |
1912 | return val; |
1913 | } | |
35692fe0 JB |
1914 | } |
1915 | ||
cacc3e2c RS |
1916 | DEFUN ("message-box", Fmessage_box, Smessage_box, 1, MANY, 0, |
1917 | "Display a message, in a dialog box if possible.\n\ | |
1918 | If a dialog box is not available, use the echo area.\n\ | |
f8250f01 RS |
1919 | The first argument is a format control string, and the rest are data\n\ |
1920 | to be formatted under control of the string. See `format' for details.\n\ | |
1921 | \n\ | |
cacc3e2c RS |
1922 | If the first argument is nil, clear any existing message; let the\n\ |
1923 | minibuffer contents show.") | |
1924 | (nargs, args) | |
1925 | int nargs; | |
1926 | Lisp_Object *args; | |
1927 | { | |
1928 | if (NILP (args[0])) | |
1929 | { | |
1930 | message (0); | |
1931 | return Qnil; | |
1932 | } | |
1933 | else | |
1934 | { | |
1935 | register Lisp_Object val; | |
1936 | val = Fformat (nargs, args); | |
f8250f01 | 1937 | #ifdef HAVE_MENUS |
cacc3e2c RS |
1938 | { |
1939 | Lisp_Object pane, menu, obj; | |
1940 | struct gcpro gcpro1; | |
1941 | pane = Fcons (Fcons (build_string ("OK"), Qt), Qnil); | |
1942 | GCPRO1 (pane); | |
1943 | menu = Fcons (val, pane); | |
1944 | obj = Fx_popup_dialog (Qt, menu); | |
1945 | UNGCPRO; | |
1946 | return val; | |
1947 | } | |
f8250f01 | 1948 | #else /* not HAVE_MENUS */ |
cacc3e2c RS |
1949 | /* Copy the data so that it won't move when we GC. */ |
1950 | if (! message_text) | |
1951 | { | |
1952 | message_text = (char *)xmalloc (80); | |
1953 | message_length = 80; | |
1954 | } | |
1955 | if (XSTRING (val)->size > message_length) | |
1956 | { | |
1957 | message_length = XSTRING (val)->size; | |
1958 | message_text = (char *)xrealloc (message_text, message_length); | |
1959 | } | |
1960 | bcopy (XSTRING (val)->data, message_text, XSTRING (val)->size); | |
1961 | message2 (message_text, XSTRING (val)->size); | |
1962 | return val; | |
f8250f01 | 1963 | #endif /* not HAVE_MENUS */ |
cacc3e2c RS |
1964 | } |
1965 | } | |
f8250f01 | 1966 | #ifdef HAVE_MENUS |
cacc3e2c RS |
1967 | extern Lisp_Object last_nonmenu_event; |
1968 | #endif | |
f8250f01 | 1969 | |
cacc3e2c RS |
1970 | DEFUN ("message-or-box", Fmessage_or_box, Smessage_or_box, 1, MANY, 0, |
1971 | "Display a message in a dialog box or in the echo area.\n\ | |
1972 | If this command was invoked with the mouse, use a dialog box.\n\ | |
1973 | Otherwise, use the echo area.\n\ | |
f8250f01 RS |
1974 | The first argument is a format control string, and the rest are data\n\ |
1975 | to be formatted under control of the string. See `format' for details.\n\ | |
cacc3e2c | 1976 | \n\ |
cacc3e2c RS |
1977 | If the first argument is nil, clear any existing message; let the\n\ |
1978 | minibuffer contents show.") | |
1979 | (nargs, args) | |
1980 | int nargs; | |
1981 | Lisp_Object *args; | |
1982 | { | |
f8250f01 | 1983 | #ifdef HAVE_MENUS |
cacc3e2c | 1984 | if (NILP (last_nonmenu_event) || CONSP (last_nonmenu_event)) |
0a56ee6b | 1985 | return Fmessage_box (nargs, args); |
cacc3e2c RS |
1986 | #endif |
1987 | return Fmessage (nargs, args); | |
1988 | } | |
1989 | ||
35692fe0 JB |
1990 | DEFUN ("format", Fformat, Sformat, 1, MANY, 0, |
1991 | "Format a string out of a control-string and arguments.\n\ | |
1992 | The first argument is a control string.\n\ | |
1993 | The other arguments are substituted into it to make the result, a string.\n\ | |
1994 | It may contain %-sequences meaning to substitute the next argument.\n\ | |
1995 | %s means print a string argument. Actually, prints any object, with `princ'.\n\ | |
1996 | %d means print as number in decimal (%o octal, %x hex).\n\ | |
9db1775a RS |
1997 | %e means print a number in exponential notation.\n\ |
1998 | %f means print a number in decimal-point notation.\n\ | |
1999 | %g means print a number in exponential notation\n\ | |
2000 | or decimal-point notation, whichever uses fewer characters.\n\ | |
35692fe0 JB |
2001 | %c means print a number as a single character.\n\ |
2002 | %S means print any object as an s-expression (using prin1).\n\ | |
9db1775a | 2003 | The argument used for %d, %o, %x, %e, %f, %g or %c must be a number.\n\ |
52b14ac0 | 2004 | Use %% to put a single % into the output.") |
35692fe0 JB |
2005 | (nargs, args) |
2006 | int nargs; | |
2007 | register Lisp_Object *args; | |
2008 | { | |
2009 | register int n; /* The number of the next arg to substitute */ | |
2010 | register int total = 5; /* An estimate of the final length */ | |
2011 | char *buf; | |
2012 | register unsigned char *format, *end; | |
2013 | int length; | |
2014 | extern char *index (); | |
2015 | /* It should not be necessary to GCPRO ARGS, because | |
2016 | the caller in the interpreter should take care of that. */ | |
2017 | ||
2018 | CHECK_STRING (args[0], 0); | |
2019 | format = XSTRING (args[0])->data; | |
2020 | end = format + XSTRING (args[0])->size; | |
2021 | ||
2022 | n = 0; | |
2023 | while (format != end) | |
2024 | if (*format++ == '%') | |
2025 | { | |
2026 | int minlen; | |
2027 | ||
2028 | /* Process a numeric arg and skip it. */ | |
2029 | minlen = atoi (format); | |
537dfb13 RS |
2030 | if (minlen < 0) |
2031 | minlen = - minlen; | |
2032 | ||
35692fe0 JB |
2033 | while ((*format >= '0' && *format <= '9') |
2034 | || *format == '-' || *format == ' ' || *format == '.') | |
2035 | format++; | |
2036 | ||
2037 | if (*format == '%') | |
2038 | format++; | |
2039 | else if (++n >= nargs) | |
537dfb13 | 2040 | error ("Not enough arguments for format string"); |
35692fe0 JB |
2041 | else if (*format == 'S') |
2042 | { | |
2043 | /* For `S', prin1 the argument and then treat like a string. */ | |
2044 | register Lisp_Object tem; | |
2045 | tem = Fprin1_to_string (args[n], Qnil); | |
2046 | args[n] = tem; | |
2047 | goto string; | |
2048 | } | |
ae683129 | 2049 | else if (SYMBOLP (args[n])) |
35692fe0 | 2050 | { |
d2fd0445 | 2051 | XSETSTRING (args[n], XSYMBOL (args[n])->name); |
35692fe0 JB |
2052 | goto string; |
2053 | } | |
ae683129 | 2054 | else if (STRINGP (args[n])) |
35692fe0 JB |
2055 | { |
2056 | string: | |
b22e7ecc KH |
2057 | if (*format != 's' && *format != 'S') |
2058 | error ("format specifier doesn't match argument type"); | |
35692fe0 | 2059 | total += XSTRING (args[n])->size; |
537dfb13 RS |
2060 | /* We have to put an arbitrary limit on minlen |
2061 | since otherwise it could make alloca fail. */ | |
2062 | if (minlen < XSTRING (args[n])->size + 1000) | |
2063 | total += minlen; | |
35692fe0 JB |
2064 | } |
2065 | /* Would get MPV otherwise, since Lisp_Int's `point' to low memory. */ | |
ae683129 | 2066 | else if (INTEGERP (args[n]) && *format != 's') |
35692fe0 | 2067 | { |
4746118a | 2068 | #ifdef LISP_FLOAT_TYPE |
eb8c3be9 | 2069 | /* The following loop assumes the Lisp type indicates |
35692fe0 JB |
2070 | the proper way to pass the argument. |
2071 | So make sure we have a flonum if the argument should | |
2072 | be a double. */ | |
2073 | if (*format == 'e' || *format == 'f' || *format == 'g') | |
2074 | args[n] = Ffloat (args[n]); | |
4746118a | 2075 | #endif |
d65666d5 | 2076 | total += 30; |
537dfb13 RS |
2077 | /* We have to put an arbitrary limit on minlen |
2078 | since otherwise it could make alloca fail. */ | |
2079 | if (minlen < 1000) | |
2080 | total += minlen; | |
35692fe0 | 2081 | } |
4746118a | 2082 | #ifdef LISP_FLOAT_TYPE |
ae683129 | 2083 | else if (FLOATP (args[n]) && *format != 's') |
35692fe0 JB |
2084 | { |
2085 | if (! (*format == 'e' || *format == 'f' || *format == 'g')) | |
2086 | args[n] = Ftruncate (args[n]); | |
d65666d5 | 2087 | total += 30; |
537dfb13 RS |
2088 | /* We have to put an arbitrary limit on minlen |
2089 | since otherwise it could make alloca fail. */ | |
2090 | if (minlen < 1000) | |
2091 | total += minlen; | |
35692fe0 | 2092 | } |
4746118a | 2093 | #endif |
35692fe0 JB |
2094 | else |
2095 | { | |
2096 | /* Anything but a string, convert to a string using princ. */ | |
2097 | register Lisp_Object tem; | |
2098 | tem = Fprin1_to_string (args[n], Qt); | |
2099 | args[n] = tem; | |
2100 | goto string; | |
2101 | } | |
2102 | } | |
2103 | ||
2104 | { | |
2105 | register int nstrings = n + 1; | |
50aa2f90 JB |
2106 | |
2107 | /* Allocate twice as many strings as we have %-escapes; floats occupy | |
2108 | two slots, and we're not sure how many of those we have. */ | |
35692fe0 | 2109 | register unsigned char **strings |
50aa2f90 JB |
2110 | = (unsigned char **) alloca (2 * nstrings * sizeof (unsigned char *)); |
2111 | int i; | |
35692fe0 | 2112 | |
50aa2f90 | 2113 | i = 0; |
35692fe0 JB |
2114 | for (n = 0; n < nstrings; n++) |
2115 | { | |
2116 | if (n >= nargs) | |
50aa2f90 | 2117 | strings[i++] = (unsigned char *) ""; |
ae683129 | 2118 | else if (INTEGERP (args[n])) |
35692fe0 JB |
2119 | /* We checked above that the corresponding format effector |
2120 | isn't %s, which would cause MPV. */ | |
50aa2f90 | 2121 | strings[i++] = (unsigned char *) XINT (args[n]); |
4746118a | 2122 | #ifdef LISP_FLOAT_TYPE |
ae683129 | 2123 | else if (FLOATP (args[n])) |
35692fe0 | 2124 | { |
86246708 | 2125 | union { double d; char *half[2]; } u; |
35692fe0 JB |
2126 | |
2127 | u.d = XFLOAT (args[n])->data; | |
86246708 KH |
2128 | strings[i++] = (unsigned char *) u.half[0]; |
2129 | strings[i++] = (unsigned char *) u.half[1]; | |
35692fe0 | 2130 | } |
4746118a | 2131 | #endif |
102cfe92 RS |
2132 | else if (i == 0) |
2133 | /* The first string is treated differently | |
2134 | because it is the format string. */ | |
50aa2f90 | 2135 | strings[i++] = XSTRING (args[n])->data; |
102cfe92 | 2136 | else |
aa8fe325 | 2137 | strings[i++] = (unsigned char *) XSTRING (args[n]); |
35692fe0 JB |
2138 | } |
2139 | ||
fb893977 RS |
2140 | /* Make room in result for all the non-%-codes in the control string. */ |
2141 | total += XSTRING (args[0])->size; | |
2142 | ||
35692fe0 JB |
2143 | /* Format it in bigger and bigger buf's until it all fits. */ |
2144 | while (1) | |
2145 | { | |
2146 | buf = (char *) alloca (total + 1); | |
2147 | buf[total - 1] = 0; | |
2148 | ||
102cfe92 RS |
2149 | length = doprnt_lisp (buf, total + 1, strings[0], |
2150 | end, i-1, strings + 1); | |
35692fe0 JB |
2151 | if (buf[total - 1] == 0) |
2152 | break; | |
2153 | ||
2154 | total *= 2; | |
2155 | } | |
2156 | } | |
2157 | ||
2158 | /* UNGCPRO; */ | |
2159 | return make_string (buf, length); | |
2160 | } | |
2161 | ||
2162 | /* VARARGS 1 */ | |
2163 | Lisp_Object | |
2164 | #ifdef NO_ARG_ARRAY | |
2165 | format1 (string1, arg0, arg1, arg2, arg3, arg4) | |
679e18b1 | 2166 | EMACS_INT arg0, arg1, arg2, arg3, arg4; |
35692fe0 JB |
2167 | #else |
2168 | format1 (string1) | |
2169 | #endif | |
2170 | char *string1; | |
2171 | { | |
2172 | char buf[100]; | |
2173 | #ifdef NO_ARG_ARRAY | |
679e18b1 | 2174 | EMACS_INT args[5]; |
35692fe0 JB |
2175 | args[0] = arg0; |
2176 | args[1] = arg1; | |
2177 | args[2] = arg2; | |
2178 | args[3] = arg3; | |
2179 | args[4] = arg4; | |
ea4d2909 | 2180 | doprnt (buf, sizeof buf, string1, (char *)0, 5, args); |
35692fe0 | 2181 | #else |
ea4d2909 | 2182 | doprnt (buf, sizeof buf, string1, (char *)0, 5, &string1 + 1); |
35692fe0 JB |
2183 | #endif |
2184 | return build_string (buf); | |
2185 | } | |
2186 | \f | |
2187 | DEFUN ("char-equal", Fchar_equal, Schar_equal, 2, 2, 0, | |
2188 | "Return t if two characters match, optionally ignoring case.\n\ | |
2189 | Both arguments must be characters (i.e. integers).\n\ | |
2190 | Case is ignored if `case-fold-search' is non-nil in the current buffer.") | |
2191 | (c1, c2) | |
2192 | register Lisp_Object c1, c2; | |
2193 | { | |
be46733f | 2194 | Lisp_Object *downcase = DOWNCASE_TABLE; |
35692fe0 JB |
2195 | CHECK_NUMBER (c1, 0); |
2196 | CHECK_NUMBER (c2, 1); | |
2197 | ||
56a98455 | 2198 | if (!NILP (current_buffer->case_fold_search) |
be46733f RS |
2199 | ? ((XINT (downcase[0xff & XFASTINT (c1)]) |
2200 | == XINT (downcase[0xff & XFASTINT (c2)])) | |
c34beca9 | 2201 | && (XFASTINT (c1) & ~0xff) == (XFASTINT (c2) & ~0xff)) |
35692fe0 JB |
2202 | : XINT (c1) == XINT (c2)) |
2203 | return Qt; | |
2204 | return Qnil; | |
2205 | } | |
b229b8d1 RS |
2206 | \f |
2207 | /* Transpose the markers in two regions of the current buffer, and | |
2208 | adjust the ones between them if necessary (i.e.: if the regions | |
2209 | differ in size). | |
2210 | ||
2211 | Traverses the entire marker list of the buffer to do so, adding an | |
2212 | appropriate amount to some, subtracting from some, and leaving the | |
2213 | rest untouched. Most of this is copied from adjust_markers in insdel.c. | |
2214 | ||
03240d11 | 2215 | It's the caller's job to see that (start1 <= end1 <= start2 <= end2). */ |
b229b8d1 RS |
2216 | |
2217 | void | |
2218 | transpose_markers (start1, end1, start2, end2) | |
2219 | register int start1, end1, start2, end2; | |
2220 | { | |
2221 | register int amt1, amt2, diff, mpos; | |
2222 | register Lisp_Object marker; | |
b229b8d1 | 2223 | |
03240d11 | 2224 | /* Update point as if it were a marker. */ |
8de1d5f0 KH |
2225 | if (PT < start1) |
2226 | ; | |
2227 | else if (PT < end1) | |
2228 | TEMP_SET_PT (PT + (end2 - end1)); | |
2229 | else if (PT < start2) | |
2230 | TEMP_SET_PT (PT + (end2 - start2) - (end1 - start1)); | |
2231 | else if (PT < end2) | |
2232 | TEMP_SET_PT (PT - (start2 - start1)); | |
2233 | ||
03240d11 KH |
2234 | /* We used to adjust the endpoints here to account for the gap, but that |
2235 | isn't good enough. Even if we assume the caller has tried to move the | |
2236 | gap out of our way, it might still be at start1 exactly, for example; | |
2237 | and that places it `inside' the interval, for our purposes. The amount | |
2238 | of adjustment is nontrivial if there's a `denormalized' marker whose | |
2239 | position is between GPT and GPT + GAP_SIZE, so it's simpler to leave | |
2240 | the dirty work to Fmarker_position, below. */ | |
b229b8d1 RS |
2241 | |
2242 | /* The difference between the region's lengths */ | |
2243 | diff = (end2 - start2) - (end1 - start1); | |
2244 | ||
2245 | /* For shifting each marker in a region by the length of the other | |
2246 | * region plus the distance between the regions. | |
2247 | */ | |
2248 | amt1 = (end2 - start2) + (start2 - end1); | |
2249 | amt2 = (end1 - start1) + (start2 - end1); | |
2250 | ||
1e158d25 | 2251 | for (marker = BUF_MARKERS (current_buffer); !NILP (marker); |
03240d11 | 2252 | marker = XMARKER (marker)->chain) |
b229b8d1 | 2253 | { |
03240d11 KH |
2254 | mpos = Fmarker_position (marker); |
2255 | if (mpos >= start1 && mpos < end2) | |
2256 | { | |
2257 | if (mpos < end1) | |
2258 | mpos += amt1; | |
2259 | else if (mpos < start2) | |
2260 | mpos += diff; | |
2261 | else | |
2262 | mpos -= amt2; | |
2263 | if (mpos > GPT) mpos += GAP_SIZE; | |
2264 | XMARKER (marker)->bufpos = mpos; | |
2265 | } | |
b229b8d1 RS |
2266 | } |
2267 | } | |
2268 | ||
2269 | DEFUN ("transpose-regions", Ftranspose_regions, Stranspose_regions, 4, 5, 0, | |
2270 | "Transpose region START1 to END1 with START2 to END2.\n\ | |
2271 | The regions may not be overlapping, because the size of the buffer is\n\ | |
2272 | never changed in a transposition.\n\ | |
2273 | \n\ | |
2274 | Optional fifth arg LEAVE_MARKERS, if non-nil, means don't transpose\n\ | |
2275 | any markers that happen to be located in the regions.\n\ | |
2276 | \n\ | |
2277 | Transposing beyond buffer boundaries is an error.") | |
2278 | (startr1, endr1, startr2, endr2, leave_markers) | |
2279 | Lisp_Object startr1, endr1, startr2, endr2, leave_markers; | |
2280 | { | |
2281 | register int start1, end1, start2, end2, | |
2282 | gap, len1, len_mid, len2; | |
3c6bc7d0 | 2283 | unsigned char *start1_addr, *start2_addr, *temp; |
b229b8d1 RS |
2284 | |
2285 | #ifdef USE_TEXT_PROPERTIES | |
2286 | INTERVAL cur_intv, tmp_interval1, tmp_interval_mid, tmp_interval2; | |
1e158d25 | 2287 | cur_intv = BUF_INTERVALS (current_buffer); |
b229b8d1 RS |
2288 | #endif /* USE_TEXT_PROPERTIES */ |
2289 | ||
2290 | validate_region (&startr1, &endr1); | |
2291 | validate_region (&startr2, &endr2); | |
2292 | ||
2293 | start1 = XFASTINT (startr1); | |
2294 | end1 = XFASTINT (endr1); | |
2295 | start2 = XFASTINT (startr2); | |
2296 | end2 = XFASTINT (endr2); | |
2297 | gap = GPT; | |
2298 | ||
2299 | /* Swap the regions if they're reversed. */ | |
2300 | if (start2 < end1) | |
2301 | { | |
2302 | register int glumph = start1; | |
2303 | start1 = start2; | |
2304 | start2 = glumph; | |
2305 | glumph = end1; | |
2306 | end1 = end2; | |
2307 | end2 = glumph; | |
2308 | } | |
2309 | ||
b229b8d1 RS |
2310 | len1 = end1 - start1; |
2311 | len2 = end2 - start2; | |
2312 | ||
2313 | if (start2 < end1) | |
2314 | error ("transposed regions not properly ordered"); | |
2315 | else if (start1 == end1 || start2 == end2) | |
2316 | error ("transposed region may not be of length 0"); | |
2317 | ||
2318 | /* The possibilities are: | |
2319 | 1. Adjacent (contiguous) regions, or separate but equal regions | |
2320 | (no, really equal, in this case!), or | |
2321 | 2. Separate regions of unequal size. | |
2322 | ||
2323 | The worst case is usually No. 2. It means that (aside from | |
2324 | potential need for getting the gap out of the way), there also | |
2325 | needs to be a shifting of the text between the two regions. So | |
2326 | if they are spread far apart, we are that much slower... sigh. */ | |
2327 | ||
2328 | /* It must be pointed out that the really studly thing to do would | |
2329 | be not to move the gap at all, but to leave it in place and work | |
2330 | around it if necessary. This would be extremely efficient, | |
2331 | especially considering that people are likely to do | |
2332 | transpositions near where they are working interactively, which | |
2333 | is exactly where the gap would be found. However, such code | |
2334 | would be much harder to write and to read. So, if you are | |
2335 | reading this comment and are feeling squirrely, by all means have | |
2336 | a go! I just didn't feel like doing it, so I will simply move | |
2337 | the gap the minimum distance to get it out of the way, and then | |
2338 | deal with an unbroken array. */ | |
3c6bc7d0 RS |
2339 | |
2340 | /* Make sure the gap won't interfere, by moving it out of the text | |
2341 | we will operate on. */ | |
2342 | if (start1 < gap && gap < end2) | |
2343 | { | |
2344 | if (gap - start1 < end2 - gap) | |
2345 | move_gap (start1); | |
2346 | else | |
2347 | move_gap (end2); | |
2348 | } | |
b229b8d1 RS |
2349 | |
2350 | /* Hmmm... how about checking to see if the gap is large | |
2351 | enough to use as the temporary storage? That would avoid an | |
2352 | allocation... interesting. Later, don't fool with it now. */ | |
2353 | ||
2354 | /* Working without memmove, for portability (sigh), so must be | |
2355 | careful of overlapping subsections of the array... */ | |
2356 | ||
2357 | if (end1 == start2) /* adjacent regions */ | |
2358 | { | |
b229b8d1 RS |
2359 | modify_region (current_buffer, start1, end2); |
2360 | record_change (start1, len1 + len2); | |
2361 | ||
2362 | #ifdef USE_TEXT_PROPERTIES | |
2363 | tmp_interval1 = copy_intervals (cur_intv, start1, len1); | |
2364 | tmp_interval2 = copy_intervals (cur_intv, start2, len2); | |
2365 | Fset_text_properties (start1, end2, Qnil, Qnil); | |
2366 | #endif /* USE_TEXT_PROPERTIES */ | |
2367 | ||
2368 | /* First region smaller than second. */ | |
2369 | if (len1 < len2) | |
2370 | { | |
3c6bc7d0 RS |
2371 | /* We use alloca only if it is small, |
2372 | because we want to avoid stack overflow. */ | |
2373 | if (len2 > 20000) | |
2374 | temp = (unsigned char *) xmalloc (len2); | |
2375 | else | |
2376 | temp = (unsigned char *) alloca (len2); | |
03240d11 KH |
2377 | |
2378 | /* Don't precompute these addresses. We have to compute them | |
2379 | at the last minute, because the relocating allocator might | |
2380 | have moved the buffer around during the xmalloc. */ | |
2381 | start1_addr = BUF_CHAR_ADDRESS (current_buffer, start1); | |
2382 | start2_addr = BUF_CHAR_ADDRESS (current_buffer, start2); | |
2383 | ||
b229b8d1 RS |
2384 | bcopy (start2_addr, temp, len2); |
2385 | bcopy (start1_addr, start1_addr + len2, len1); | |
2386 | bcopy (temp, start1_addr, len2); | |
3c6bc7d0 RS |
2387 | if (len2 > 20000) |
2388 | free (temp); | |
b229b8d1 RS |
2389 | } |
2390 | else | |
2391 | /* First region not smaller than second. */ | |
2392 | { | |
3c6bc7d0 RS |
2393 | if (len1 > 20000) |
2394 | temp = (unsigned char *) xmalloc (len1); | |
2395 | else | |
2396 | temp = (unsigned char *) alloca (len1); | |
03240d11 KH |
2397 | start1_addr = BUF_CHAR_ADDRESS (current_buffer, start1); |
2398 | start2_addr = BUF_CHAR_ADDRESS (current_buffer, start2); | |
b229b8d1 RS |
2399 | bcopy (start1_addr, temp, len1); |
2400 | bcopy (start2_addr, start1_addr, len2); | |
2401 | bcopy (temp, start1_addr + len2, len1); | |
3c6bc7d0 RS |
2402 | if (len1 > 20000) |
2403 | free (temp); | |
b229b8d1 RS |
2404 | } |
2405 | #ifdef USE_TEXT_PROPERTIES | |
2406 | graft_intervals_into_buffer (tmp_interval1, start1 + len2, | |
2407 | len1, current_buffer, 0); | |
2408 | graft_intervals_into_buffer (tmp_interval2, start1, | |
2409 | len2, current_buffer, 0); | |
2410 | #endif /* USE_TEXT_PROPERTIES */ | |
2411 | } | |
2412 | /* Non-adjacent regions, because end1 != start2, bleagh... */ | |
2413 | else | |
2414 | { | |
b229b8d1 RS |
2415 | if (len1 == len2) |
2416 | /* Regions are same size, though, how nice. */ | |
2417 | { | |
2418 | modify_region (current_buffer, start1, end1); | |
2419 | modify_region (current_buffer, start2, end2); | |
2420 | record_change (start1, len1); | |
2421 | record_change (start2, len2); | |
2422 | #ifdef USE_TEXT_PROPERTIES | |
2423 | tmp_interval1 = copy_intervals (cur_intv, start1, len1); | |
2424 | tmp_interval2 = copy_intervals (cur_intv, start2, len2); | |
2425 | Fset_text_properties (start1, end1, Qnil, Qnil); | |
2426 | Fset_text_properties (start2, end2, Qnil, Qnil); | |
2427 | #endif /* USE_TEXT_PROPERTIES */ | |
2428 | ||
3c6bc7d0 RS |
2429 | if (len1 > 20000) |
2430 | temp = (unsigned char *) xmalloc (len1); | |
2431 | else | |
2432 | temp = (unsigned char *) alloca (len1); | |
03240d11 KH |
2433 | start1_addr = BUF_CHAR_ADDRESS (current_buffer, start1); |
2434 | start2_addr = BUF_CHAR_ADDRESS (current_buffer, start2); | |
b229b8d1 RS |
2435 | bcopy (start1_addr, temp, len1); |
2436 | bcopy (start2_addr, start1_addr, len2); | |
2437 | bcopy (temp, start2_addr, len1); | |
3c6bc7d0 RS |
2438 | if (len1 > 20000) |
2439 | free (temp); | |
b229b8d1 RS |
2440 | #ifdef USE_TEXT_PROPERTIES |
2441 | graft_intervals_into_buffer (tmp_interval1, start2, | |
2442 | len1, current_buffer, 0); | |
2443 | graft_intervals_into_buffer (tmp_interval2, start1, | |
2444 | len2, current_buffer, 0); | |
2445 | #endif /* USE_TEXT_PROPERTIES */ | |
2446 | } | |
2447 | ||
2448 | else if (len1 < len2) /* Second region larger than first */ | |
2449 | /* Non-adjacent & unequal size, area between must also be shifted. */ | |
2450 | { | |
2451 | len_mid = start2 - end1; | |
2452 | modify_region (current_buffer, start1, end2); | |
2453 | record_change (start1, (end2 - start1)); | |
2454 | #ifdef USE_TEXT_PROPERTIES | |
2455 | tmp_interval1 = copy_intervals (cur_intv, start1, len1); | |
2456 | tmp_interval_mid = copy_intervals (cur_intv, end1, len_mid); | |
2457 | tmp_interval2 = copy_intervals (cur_intv, start2, len2); | |
2458 | Fset_text_properties (start1, end2, Qnil, Qnil); | |
2459 | #endif /* USE_TEXT_PROPERTIES */ | |
2460 | ||
3c6bc7d0 RS |
2461 | /* holds region 2 */ |
2462 | if (len2 > 20000) | |
2463 | temp = (unsigned char *) xmalloc (len2); | |
2464 | else | |
2465 | temp = (unsigned char *) alloca (len2); | |
03240d11 KH |
2466 | start1_addr = BUF_CHAR_ADDRESS (current_buffer, start1); |
2467 | start2_addr = BUF_CHAR_ADDRESS (current_buffer, start2); | |
3c6bc7d0 | 2468 | bcopy (start2_addr, temp, len2); |
b229b8d1 | 2469 | bcopy (start1_addr, start1_addr + len_mid + len2, len1); |
3c6bc7d0 RS |
2470 | safe_bcopy (start1_addr + len1, start1_addr + len2, len_mid); |
2471 | bcopy (temp, start1_addr, len2); | |
2472 | if (len2 > 20000) | |
2473 | free (temp); | |
b229b8d1 RS |
2474 | #ifdef USE_TEXT_PROPERTIES |
2475 | graft_intervals_into_buffer (tmp_interval1, end2 - len1, | |
2476 | len1, current_buffer, 0); | |
2477 | graft_intervals_into_buffer (tmp_interval_mid, start1 + len2, | |
2478 | len_mid, current_buffer, 0); | |
2479 | graft_intervals_into_buffer (tmp_interval2, start1, | |
2480 | len2, current_buffer, 0); | |
2481 | #endif /* USE_TEXT_PROPERTIES */ | |
2482 | } | |
2483 | else | |
2484 | /* Second region smaller than first. */ | |
2485 | { | |
2486 | len_mid = start2 - end1; | |
2487 | record_change (start1, (end2 - start1)); | |
2488 | modify_region (current_buffer, start1, end2); | |
2489 | ||
2490 | #ifdef USE_TEXT_PROPERTIES | |
2491 | tmp_interval1 = copy_intervals (cur_intv, start1, len1); | |
2492 | tmp_interval_mid = copy_intervals (cur_intv, end1, len_mid); | |
2493 | tmp_interval2 = copy_intervals (cur_intv, start2, len2); | |
2494 | Fset_text_properties (start1, end2, Qnil, Qnil); | |
2495 | #endif /* USE_TEXT_PROPERTIES */ | |
2496 | ||
3c6bc7d0 RS |
2497 | /* holds region 1 */ |
2498 | if (len1 > 20000) | |
2499 | temp = (unsigned char *) xmalloc (len1); | |
2500 | else | |
2501 | temp = (unsigned char *) alloca (len1); | |
03240d11 KH |
2502 | start1_addr = BUF_CHAR_ADDRESS (current_buffer, start1); |
2503 | start2_addr = BUF_CHAR_ADDRESS (current_buffer, start2); | |
3c6bc7d0 | 2504 | bcopy (start1_addr, temp, len1); |
b229b8d1 | 2505 | bcopy (start2_addr, start1_addr, len2); |
3c6bc7d0 RS |
2506 | bcopy (start1_addr + len1, start1_addr + len2, len_mid); |
2507 | bcopy (temp, start1_addr + len2 + len_mid, len1); | |
2508 | if (len1 > 20000) | |
2509 | free (temp); | |
b229b8d1 RS |
2510 | #ifdef USE_TEXT_PROPERTIES |
2511 | graft_intervals_into_buffer (tmp_interval1, end2 - len1, | |
2512 | len1, current_buffer, 0); | |
2513 | graft_intervals_into_buffer (tmp_interval_mid, start1 + len2, | |
2514 | len_mid, current_buffer, 0); | |
2515 | graft_intervals_into_buffer (tmp_interval2, start1, | |
2516 | len2, current_buffer, 0); | |
2517 | #endif /* USE_TEXT_PROPERTIES */ | |
2518 | } | |
2519 | } | |
2520 | ||
2521 | /* todo: this will be slow, because for every transposition, we | |
2522 | traverse the whole friggin marker list. Possible solutions: | |
2523 | somehow get a list of *all* the markers across multiple | |
2524 | transpositions and do it all in one swell phoop. Or maybe modify | |
2525 | Emacs' marker code to keep an ordered list or tree. This might | |
2526 | be nicer, and more beneficial in the long run, but would be a | |
2527 | bunch of work. Plus the way they're arranged now is nice. */ | |
2528 | if (NILP (leave_markers)) | |
8de1d5f0 KH |
2529 | { |
2530 | transpose_markers (start1, end1, start2, end2); | |
2531 | fix_overlays_in_range (start1, end2); | |
2532 | } | |
b229b8d1 RS |
2533 | |
2534 | return Qnil; | |
2535 | } | |
35692fe0 | 2536 | |
35692fe0 JB |
2537 | \f |
2538 | void | |
2539 | syms_of_editfns () | |
2540 | { | |
260e2e2a KH |
2541 | environbuf = 0; |
2542 | ||
2543 | Qbuffer_access_fontify_functions | |
2544 | = intern ("buffer-access-fontify-functions"); | |
2545 | staticpro (&Qbuffer_access_fontify_functions); | |
2546 | ||
2547 | DEFVAR_LISP ("buffer-access-fontify-functions", | |
2548 | &Vbuffer_access_fontify_functions, | |
2549 | "List of functions called by `buffer-substring' to fontify if necessary.\n\ | |
2550 | Each function is called with two arguments which specify the range\n\ | |
2551 | of the buffer being accessed."); | |
2552 | Vbuffer_access_fontify_functions = Qnil; | |
2553 | ||
af209db8 RS |
2554 | { |
2555 | Lisp_Object obuf; | |
2556 | extern Lisp_Object Vprin1_to_string_buffer; | |
2557 | obuf = Fcurrent_buffer (); | |
2558 | /* Do this here, because init_buffer_once is too early--it won't work. */ | |
2559 | Fset_buffer (Vprin1_to_string_buffer); | |
2560 | /* Make sure buffer-access-fontify-functions is nil in this buffer. */ | |
2561 | Fset (Fmake_local_variable (intern ("buffer-access-fontify-functions")), | |
2562 | Qnil); | |
2563 | Fset_buffer (obuf); | |
2564 | } | |
2565 | ||
0b6fd023 | 2566 | DEFVAR_LISP ("buffer-access-fontified-property", |
260e2e2a KH |
2567 | &Vbuffer_access_fontified_property, |
2568 | "Property which (if non-nil) indicates text has been fontified.\n\ | |
2569 | `buffer-substring' need not call the `buffer-access-fontify-functions'\n\ | |
2570 | functions if all the text being accessed has this property."); | |
2571 | Vbuffer_access_fontified_property = Qnil; | |
2572 | ||
f43754f6 KH |
2573 | DEFVAR_LISP ("system-name", &Vsystem_name, |
2574 | "The name of the machine Emacs is running on."); | |
2575 | ||
2576 | DEFVAR_LISP ("user-full-name", &Vuser_full_name, | |
2577 | "The full name of the user logged in."); | |
2578 | ||
35b34f72 | 2579 | DEFVAR_LISP ("user-login-name", &Vuser_login_name, |
f43754f6 KH |
2580 | "The user's name, taken from environment variables if possible."); |
2581 | ||
35b34f72 | 2582 | DEFVAR_LISP ("user-real-login-name", &Vuser_real_login_name, |
f43754f6 | 2583 | "The user's name, based upon the real uid only."); |
35692fe0 JB |
2584 | |
2585 | defsubr (&Schar_equal); | |
2586 | defsubr (&Sgoto_char); | |
2587 | defsubr (&Sstring_to_char); | |
2588 | defsubr (&Schar_to_string); | |
2589 | defsubr (&Sbuffer_substring); | |
260e2e2a | 2590 | defsubr (&Sbuffer_substring_no_properties); |
35692fe0 JB |
2591 | defsubr (&Sbuffer_string); |
2592 | ||
2593 | defsubr (&Spoint_marker); | |
2594 | defsubr (&Smark_marker); | |
2595 | defsubr (&Spoint); | |
2596 | defsubr (&Sregion_beginning); | |
2597 | defsubr (&Sregion_end); | |
2598 | /* defsubr (&Smark); */ | |
2599 | /* defsubr (&Sset_mark); */ | |
2600 | defsubr (&Ssave_excursion); | |
4bc8c7d2 | 2601 | defsubr (&Ssave_current_buffer); |
35692fe0 JB |
2602 | |
2603 | defsubr (&Sbufsize); | |
2604 | defsubr (&Spoint_max); | |
2605 | defsubr (&Spoint_min); | |
2606 | defsubr (&Spoint_min_marker); | |
2607 | defsubr (&Spoint_max_marker); | |
2608 | ||
c9ed721d RS |
2609 | defsubr (&Sline_beginning_position); |
2610 | defsubr (&Sline_end_position); | |
2611 | ||
35692fe0 JB |
2612 | defsubr (&Sbobp); |
2613 | defsubr (&Seobp); | |
2614 | defsubr (&Sbolp); | |
2615 | defsubr (&Seolp); | |
850a8179 JB |
2616 | defsubr (&Sfollowing_char); |
2617 | defsubr (&Sprevious_char); | |
35692fe0 JB |
2618 | defsubr (&Schar_after); |
2619 | defsubr (&Sinsert); | |
2620 | defsubr (&Sinsert_before_markers); | |
be91036a RS |
2621 | defsubr (&Sinsert_and_inherit); |
2622 | defsubr (&Sinsert_and_inherit_before_markers); | |
35692fe0 JB |
2623 | defsubr (&Sinsert_char); |
2624 | ||
2625 | defsubr (&Suser_login_name); | |
2626 | defsubr (&Suser_real_login_name); | |
2627 | defsubr (&Suser_uid); | |
2628 | defsubr (&Suser_real_uid); | |
2629 | defsubr (&Suser_full_name); | |
7fd233b3 | 2630 | defsubr (&Semacs_pid); |
d940e0e4 | 2631 | defsubr (&Scurrent_time); |
a82d387c | 2632 | defsubr (&Sformat_time_string); |
4691c06d | 2633 | defsubr (&Sdecode_time); |
cce7b8a0 | 2634 | defsubr (&Sencode_time); |
35692fe0 | 2635 | defsubr (&Scurrent_time_string); |
c2662aea | 2636 | defsubr (&Scurrent_time_zone); |
143cb9a9 | 2637 | defsubr (&Sset_time_zone_rule); |
35692fe0 | 2638 | defsubr (&Ssystem_name); |
35692fe0 | 2639 | defsubr (&Smessage); |
cacc3e2c RS |
2640 | defsubr (&Smessage_box); |
2641 | defsubr (&Smessage_or_box); | |
35692fe0 | 2642 | defsubr (&Sformat); |
35692fe0 JB |
2643 | |
2644 | defsubr (&Sinsert_buffer_substring); | |
e9cf2084 | 2645 | defsubr (&Scompare_buffer_substrings); |
35692fe0 JB |
2646 | defsubr (&Ssubst_char_in_region); |
2647 | defsubr (&Stranslate_region); | |
2648 | defsubr (&Sdelete_region); | |
2649 | defsubr (&Swiden); | |
2650 | defsubr (&Snarrow_to_region); | |
2651 | defsubr (&Ssave_restriction); | |
b229b8d1 | 2652 | defsubr (&Stranspose_regions); |
35692fe0 | 2653 | } |