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35692fe0 | 1 | /* Lisp functions pertaining to editing. |
f8c25f1b | 2 | Copyright (C) 1985,86,87,89,93,94,95 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 | |
18 | the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
19 | ||
20 | ||
738429d1 JB |
21 | #include <sys/types.h> |
22 | ||
18160b98 | 23 | #include <config.h> |
bfb61299 JB |
24 | |
25 | #ifdef VMS | |
956ace37 | 26 | #include "vms-pwd.h" |
bfb61299 | 27 | #else |
35692fe0 | 28 | #include <pwd.h> |
bfb61299 JB |
29 | #endif |
30 | ||
35692fe0 | 31 | #include "lisp.h" |
74d6d8c5 | 32 | #include "intervals.h" |
35692fe0 JB |
33 | #include "buffer.h" |
34 | #include "window.h" | |
35 | ||
956ace37 | 36 | #include "systime.h" |
35692fe0 JB |
37 | |
38 | #define min(a, b) ((a) < (b) ? (a) : (b)) | |
39 | #define max(a, b) ((a) > (b) ? (a) : (b)) | |
40 | ||
c59b5089 PE |
41 | extern char **environ; |
42 | extern Lisp_Object make_time (); | |
b1b0ee5a | 43 | extern void insert_from_buffer (); |
3c887943 | 44 | static long difftm (); |
c59b5089 | 45 | static void set_time_zone_rule (); |
b1b0ee5a | 46 | |
35692fe0 JB |
47 | /* Some static data, and a function to initialize it for each run */ |
48 | ||
49 | Lisp_Object Vsystem_name; | |
35b34f72 KH |
50 | Lisp_Object Vuser_real_login_name; /* login name of current user ID */ |
51 | Lisp_Object Vuser_full_name; /* full name of current user */ | |
52 | Lisp_Object Vuser_login_name; /* user name from LOGNAME or USER */ | |
35692fe0 JB |
53 | |
54 | void | |
55 | init_editfns () | |
56 | { | |
52b14ac0 | 57 | char *user_name; |
35692fe0 JB |
58 | register unsigned char *p, *q, *r; |
59 | struct passwd *pw; /* password entry for the current user */ | |
60 | extern char *index (); | |
61 | Lisp_Object tem; | |
62 | ||
63 | /* Set up system_name even when dumping. */ | |
ac988277 | 64 | init_system_name (); |
35692fe0 JB |
65 | |
66 | #ifndef CANNOT_DUMP | |
67 | /* Don't bother with this on initial start when just dumping out */ | |
68 | if (!initialized) | |
69 | return; | |
70 | #endif /* not CANNOT_DUMP */ | |
71 | ||
72 | pw = (struct passwd *) getpwuid (getuid ()); | |
87485d6f MW |
73 | #ifdef MSDOS |
74 | /* We let the real user name default to "root" because that's quite | |
75 | accurate on MSDOG and because it lets Emacs find the init file. | |
76 | (The DVX libraries override the Djgpp libraries here.) */ | |
35b34f72 | 77 | Vuser_real_login_name = build_string (pw ? pw->pw_name : "root"); |
87485d6f | 78 | #else |
35b34f72 | 79 | Vuser_real_login_name = build_string (pw ? pw->pw_name : "unknown"); |
87485d6f | 80 | #endif |
35692fe0 | 81 | |
52b14ac0 JB |
82 | /* Get the effective user name, by consulting environment variables, |
83 | or the effective uid if those are unset. */ | |
2c9ae24e | 84 | user_name = (char *) getenv ("LOGNAME"); |
35692fe0 | 85 | if (!user_name) |
4691c06d RS |
86 | #ifdef WINDOWSNT |
87 | user_name = (char *) getenv ("USERNAME"); /* it's USERNAME on NT */ | |
88 | #else /* WINDOWSNT */ | |
2c9ae24e | 89 | user_name = (char *) getenv ("USER"); |
4691c06d | 90 | #endif /* WINDOWSNT */ |
52b14ac0 JB |
91 | if (!user_name) |
92 | { | |
93 | pw = (struct passwd *) getpwuid (geteuid ()); | |
94 | user_name = (char *) (pw ? pw->pw_name : "unknown"); | |
95 | } | |
35b34f72 | 96 | Vuser_login_name = build_string (user_name); |
35692fe0 | 97 | |
52b14ac0 JB |
98 | /* If the user name claimed in the environment vars differs from |
99 | the real uid, use the claimed name to find the full name. */ | |
35b34f72 | 100 | tem = Fstring_equal (Vuser_login_name, Vuser_real_login_name); |
56a98455 | 101 | if (NILP (tem)) |
35b34f72 | 102 | pw = (struct passwd *) getpwnam (XSTRING (Vuser_login_name)->data); |
35692fe0 JB |
103 | |
104 | p = (unsigned char *) (pw ? USER_FULL_NAME : "unknown"); | |
105 | q = (unsigned char *) index (p, ','); | |
106 | Vuser_full_name = make_string (p, q ? q - p : strlen (p)); | |
107 | ||
108 | #ifdef AMPERSAND_FULL_NAME | |
109 | p = XSTRING (Vuser_full_name)->data; | |
8f1e2d16 | 110 | q = (unsigned char *) index (p, '&'); |
35692fe0 JB |
111 | /* Substitute the login name for the &, upcasing the first character. */ |
112 | if (q) | |
113 | { | |
35b34f72 KH |
114 | r = (unsigned char *) alloca (strlen (p) |
115 | + XSTRING (Vuser_login_name)->size + 1); | |
35692fe0 JB |
116 | bcopy (p, r, q - p); |
117 | r[q - p] = 0; | |
35b34f72 | 118 | strcat (r, XSTRING (Vuser_login_name)->data); |
35692fe0 JB |
119 | r[q - p] = UPCASE (r[q - p]); |
120 | strcat (r, q + 1); | |
121 | Vuser_full_name = build_string (r); | |
122 | } | |
123 | #endif /* AMPERSAND_FULL_NAME */ | |
9d36d071 | 124 | |
8f1e2d16 | 125 | p = (unsigned char *) getenv ("NAME"); |
9d36d071 RS |
126 | if (p) |
127 | Vuser_full_name = build_string (p); | |
35692fe0 JB |
128 | } |
129 | \f | |
130 | DEFUN ("char-to-string", Fchar_to_string, Schar_to_string, 1, 1, 0, | |
131 | "Convert arg CHAR to a one-character string containing that character.") | |
132 | (n) | |
133 | Lisp_Object n; | |
134 | { | |
135 | char c; | |
136 | CHECK_NUMBER (n, 0); | |
137 | ||
138 | c = XINT (n); | |
139 | return make_string (&c, 1); | |
140 | } | |
141 | ||
142 | DEFUN ("string-to-char", Fstring_to_char, Sstring_to_char, 1, 1, 0, | |
143 | "Convert arg STRING to a character, the first character of that string.") | |
144 | (str) | |
145 | register Lisp_Object str; | |
146 | { | |
147 | register Lisp_Object val; | |
148 | register struct Lisp_String *p; | |
149 | CHECK_STRING (str, 0); | |
150 | ||
151 | p = XSTRING (str); | |
152 | if (p->size) | |
55561c63 | 153 | XSETFASTINT (val, ((unsigned char *) p->data)[0]); |
35692fe0 | 154 | else |
55561c63 | 155 | XSETFASTINT (val, 0); |
35692fe0 JB |
156 | return val; |
157 | } | |
158 | \f | |
159 | static Lisp_Object | |
160 | buildmark (val) | |
161 | int val; | |
162 | { | |
163 | register Lisp_Object mark; | |
164 | mark = Fmake_marker (); | |
165 | Fset_marker (mark, make_number (val), Qnil); | |
166 | return mark; | |
167 | } | |
168 | ||
169 | DEFUN ("point", Fpoint, Spoint, 0, 0, 0, | |
170 | "Return value of point, as an integer.\n\ | |
171 | Beginning of buffer is position (point-min)") | |
172 | () | |
173 | { | |
174 | Lisp_Object temp; | |
55561c63 | 175 | XSETFASTINT (temp, point); |
35692fe0 JB |
176 | return temp; |
177 | } | |
178 | ||
179 | DEFUN ("point-marker", Fpoint_marker, Spoint_marker, 0, 0, 0, | |
180 | "Return value of point, as a marker object.") | |
181 | () | |
182 | { | |
183 | return buildmark (point); | |
184 | } | |
185 | ||
186 | int | |
187 | clip_to_bounds (lower, num, upper) | |
188 | int lower, num, upper; | |
189 | { | |
190 | if (num < lower) | |
191 | return lower; | |
192 | else if (num > upper) | |
193 | return upper; | |
194 | else | |
195 | return num; | |
196 | } | |
197 | ||
198 | DEFUN ("goto-char", Fgoto_char, Sgoto_char, 1, 1, "NGoto char: ", | |
199 | "Set point to POSITION, a number or marker.\n\ | |
200 | Beginning of buffer is position (point-min), end is (point-max).") | |
201 | (n) | |
202 | register Lisp_Object n; | |
203 | { | |
204 | CHECK_NUMBER_COERCE_MARKER (n, 0); | |
205 | ||
206 | SET_PT (clip_to_bounds (BEGV, XINT (n), ZV)); | |
207 | return n; | |
208 | } | |
209 | ||
210 | static Lisp_Object | |
211 | region_limit (beginningp) | |
212 | int beginningp; | |
213 | { | |
646d9d18 | 214 | extern Lisp_Object Vmark_even_if_inactive; /* Defined in callint.c. */ |
35692fe0 | 215 | register Lisp_Object m; |
c9dd14e1 RM |
216 | if (!NILP (Vtransient_mark_mode) && NILP (Vmark_even_if_inactive) |
217 | && NILP (current_buffer->mark_active)) | |
218 | Fsignal (Qmark_inactive, Qnil); | |
35692fe0 | 219 | m = Fmarker_position (current_buffer->mark); |
56a98455 | 220 | if (NILP (m)) error ("There is no region now"); |
35692fe0 JB |
221 | if ((point < XFASTINT (m)) == beginningp) |
222 | return (make_number (point)); | |
223 | else | |
224 | return (m); | |
225 | } | |
226 | ||
227 | DEFUN ("region-beginning", Fregion_beginning, Sregion_beginning, 0, 0, 0, | |
228 | "Return position of beginning of region, as an integer.") | |
229 | () | |
230 | { | |
231 | return (region_limit (1)); | |
232 | } | |
233 | ||
234 | DEFUN ("region-end", Fregion_end, Sregion_end, 0, 0, 0, | |
235 | "Return position of end of region, as an integer.") | |
236 | () | |
237 | { | |
238 | return (region_limit (0)); | |
239 | } | |
240 | ||
35692fe0 JB |
241 | DEFUN ("mark-marker", Fmark_marker, Smark_marker, 0, 0, 0, |
242 | "Return this buffer's mark, as a marker object.\n\ | |
243 | Watch out! Moving this marker changes the mark position.\n\ | |
244 | If you set the marker not to point anywhere, the buffer will have no mark.") | |
245 | () | |
246 | { | |
247 | return current_buffer->mark; | |
248 | } | |
249 | ||
35692fe0 JB |
250 | Lisp_Object |
251 | save_excursion_save () | |
252 | { | |
0e2c9c70 JB |
253 | register int visible = (XBUFFER (XWINDOW (selected_window)->buffer) |
254 | == current_buffer); | |
35692fe0 JB |
255 | |
256 | return Fcons (Fpoint_marker (), | |
aea4a109 | 257 | Fcons (Fcopy_marker (current_buffer->mark, Qnil), |
9772455e RS |
258 | Fcons (visible ? Qt : Qnil, |
259 | current_buffer->mark_active))); | |
35692fe0 JB |
260 | } |
261 | ||
262 | Lisp_Object | |
263 | save_excursion_restore (info) | |
264 | register Lisp_Object info; | |
265 | { | |
03d18690 | 266 | register Lisp_Object tem, tem1, omark, nmark; |
35692fe0 JB |
267 | |
268 | tem = Fmarker_buffer (Fcar (info)); | |
269 | /* If buffer being returned to is now deleted, avoid error */ | |
270 | /* Otherwise could get error here while unwinding to top level | |
271 | and crash */ | |
272 | /* In that case, Fmarker_buffer returns nil now. */ | |
56a98455 | 273 | if (NILP (tem)) |
35692fe0 JB |
274 | return Qnil; |
275 | Fset_buffer (tem); | |
276 | tem = Fcar (info); | |
277 | Fgoto_char (tem); | |
278 | unchain_marker (tem); | |
279 | tem = Fcar (Fcdr (info)); | |
03d18690 | 280 | omark = Fmarker_position (current_buffer->mark); |
35692fe0 | 281 | Fset_marker (current_buffer->mark, tem, Fcurrent_buffer ()); |
03d18690 | 282 | nmark = Fmarker_position (tem); |
35692fe0 JB |
283 | unchain_marker (tem); |
284 | tem = Fcdr (Fcdr (info)); | |
ef580991 RS |
285 | #if 0 /* We used to make the current buffer visible in the selected window |
286 | if that was true previously. That avoids some anomalies. | |
287 | But it creates others, and it wasn't documented, and it is simpler | |
288 | and cleaner never to alter the window/buffer connections. */ | |
9772455e RS |
289 | tem1 = Fcar (tem); |
290 | if (!NILP (tem1) | |
0e2c9c70 | 291 | && current_buffer != XBUFFER (XWINDOW (selected_window)->buffer)) |
35692fe0 | 292 | Fswitch_to_buffer (Fcurrent_buffer (), Qnil); |
ef580991 | 293 | #endif /* 0 */ |
9772455e RS |
294 | |
295 | tem1 = current_buffer->mark_active; | |
296 | current_buffer->mark_active = Fcdr (tem); | |
9fed2b18 RS |
297 | if (!NILP (Vrun_hooks)) |
298 | { | |
03d18690 RS |
299 | /* If mark is active now, and either was not active |
300 | or was at a different place, run the activate hook. */ | |
9fed2b18 | 301 | if (! NILP (current_buffer->mark_active)) |
03d18690 RS |
302 | { |
303 | if (! EQ (omark, nmark)) | |
304 | call1 (Vrun_hooks, intern ("activate-mark-hook")); | |
305 | } | |
306 | /* If mark has ceased to be active, run deactivate hook. */ | |
9fed2b18 RS |
307 | else if (! NILP (tem1)) |
308 | call1 (Vrun_hooks, intern ("deactivate-mark-hook")); | |
309 | } | |
35692fe0 JB |
310 | return Qnil; |
311 | } | |
312 | ||
313 | DEFUN ("save-excursion", Fsave_excursion, Ssave_excursion, 0, UNEVALLED, 0, | |
314 | "Save point, mark, and current buffer; execute BODY; restore those things.\n\ | |
315 | Executes BODY just like `progn'.\n\ | |
316 | The values of point, mark and the current buffer are restored\n\ | |
9772455e RS |
317 | even in case of abnormal exit (throw or error).\n\ |
318 | The state of activation of the mark is also restored.") | |
35692fe0 JB |
319 | (args) |
320 | Lisp_Object args; | |
321 | { | |
322 | register Lisp_Object val; | |
323 | int count = specpdl_ptr - specpdl; | |
324 | ||
325 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
326 | ||
327 | val = Fprogn (args); | |
328 | return unbind_to (count, val); | |
329 | } | |
330 | \f | |
331 | DEFUN ("buffer-size", Fbufsize, Sbufsize, 0, 0, 0, | |
332 | "Return the number of characters in the current buffer.") | |
333 | () | |
334 | { | |
335 | Lisp_Object temp; | |
55561c63 | 336 | XSETFASTINT (temp, Z - BEG); |
35692fe0 JB |
337 | return temp; |
338 | } | |
339 | ||
340 | DEFUN ("point-min", Fpoint_min, Spoint_min, 0, 0, 0, | |
341 | "Return the minimum permissible value of point in the current buffer.\n\ | |
4c390850 | 342 | This is 1, unless narrowing (a buffer restriction) is in effect.") |
35692fe0 JB |
343 | () |
344 | { | |
345 | Lisp_Object temp; | |
55561c63 | 346 | XSETFASTINT (temp, BEGV); |
35692fe0 JB |
347 | return temp; |
348 | } | |
349 | ||
350 | DEFUN ("point-min-marker", Fpoint_min_marker, Spoint_min_marker, 0, 0, 0, | |
351 | "Return a marker to the minimum permissible value of point in this buffer.\n\ | |
4c390850 | 352 | This is the beginning, unless narrowing (a buffer restriction) is in effect.") |
35692fe0 JB |
353 | () |
354 | { | |
355 | return buildmark (BEGV); | |
356 | } | |
357 | ||
358 | DEFUN ("point-max", Fpoint_max, Spoint_max, 0, 0, 0, | |
359 | "Return the maximum permissible value of point in the current buffer.\n\ | |
4c390850 RS |
360 | This is (1+ (buffer-size)), unless narrowing (a buffer restriction)\n\ |
361 | is in effect, in which case it is less.") | |
35692fe0 JB |
362 | () |
363 | { | |
364 | Lisp_Object temp; | |
55561c63 | 365 | XSETFASTINT (temp, ZV); |
35692fe0 JB |
366 | return temp; |
367 | } | |
368 | ||
369 | DEFUN ("point-max-marker", Fpoint_max_marker, Spoint_max_marker, 0, 0, 0, | |
370 | "Return a marker to the maximum permissible value of point in this buffer.\n\ | |
4c390850 RS |
371 | This is (1+ (buffer-size)), unless narrowing (a buffer restriction)\n\ |
372 | is in effect, in which case it is less.") | |
35692fe0 JB |
373 | () |
374 | { | |
375 | return buildmark (ZV); | |
376 | } | |
377 | ||
850a8179 JB |
378 | DEFUN ("following-char", Ffollowing_char, Sfollowing_char, 0, 0, 0, |
379 | "Return the character following point, as a number.\n\ | |
380 | At the end of the buffer or accessible region, return 0.") | |
35692fe0 JB |
381 | () |
382 | { | |
383 | Lisp_Object temp; | |
850a8179 | 384 | if (point >= ZV) |
55561c63 | 385 | XSETFASTINT (temp, 0); |
850a8179 | 386 | else |
55561c63 | 387 | XSETFASTINT (temp, FETCH_CHAR (point)); |
35692fe0 JB |
388 | return temp; |
389 | } | |
390 | ||
850a8179 JB |
391 | DEFUN ("preceding-char", Fprevious_char, Sprevious_char, 0, 0, 0, |
392 | "Return the character preceding point, as a number.\n\ | |
393 | At the beginning of the buffer or accessible region, return 0.") | |
35692fe0 JB |
394 | () |
395 | { | |
396 | Lisp_Object temp; | |
397 | if (point <= BEGV) | |
55561c63 | 398 | XSETFASTINT (temp, 0); |
35692fe0 | 399 | else |
55561c63 | 400 | XSETFASTINT (temp, FETCH_CHAR (point - 1)); |
35692fe0 JB |
401 | return temp; |
402 | } | |
403 | ||
404 | DEFUN ("bobp", Fbobp, Sbobp, 0, 0, 0, | |
405 | "Return T if point is at the beginning of the buffer.\n\ | |
406 | If the buffer is narrowed, this means the beginning of the narrowed part.") | |
407 | () | |
408 | { | |
409 | if (point == BEGV) | |
410 | return Qt; | |
411 | return Qnil; | |
412 | } | |
413 | ||
414 | DEFUN ("eobp", Feobp, Seobp, 0, 0, 0, | |
415 | "Return T if point is at the end of the buffer.\n\ | |
416 | If the buffer is narrowed, this means the end of the narrowed part.") | |
417 | () | |
418 | { | |
419 | if (point == ZV) | |
420 | return Qt; | |
421 | return Qnil; | |
422 | } | |
423 | ||
424 | DEFUN ("bolp", Fbolp, Sbolp, 0, 0, 0, | |
425 | "Return T if point is at the beginning of a line.") | |
426 | () | |
427 | { | |
428 | if (point == BEGV || FETCH_CHAR (point - 1) == '\n') | |
429 | return Qt; | |
430 | return Qnil; | |
431 | } | |
432 | ||
433 | DEFUN ("eolp", Feolp, Seolp, 0, 0, 0, | |
434 | "Return T if point is at the end of a line.\n\ | |
435 | `End of a line' includes point being at the end of the buffer.") | |
436 | () | |
437 | { | |
438 | if (point == ZV || FETCH_CHAR (point) == '\n') | |
439 | return Qt; | |
440 | return Qnil; | |
441 | } | |
442 | ||
443 | DEFUN ("char-after", Fchar_after, Schar_after, 1, 1, 0, | |
444 | "Return character in current buffer at position POS.\n\ | |
445 | POS is an integer or a buffer pointer.\n\ | |
446 | If POS is out of range, the value is nil.") | |
447 | (pos) | |
448 | Lisp_Object pos; | |
449 | { | |
450 | register Lisp_Object val; | |
451 | register int n; | |
452 | ||
453 | CHECK_NUMBER_COERCE_MARKER (pos, 0); | |
454 | ||
455 | n = XINT (pos); | |
456 | if (n < BEGV || n >= ZV) return Qnil; | |
457 | ||
55561c63 | 458 | XSETFASTINT (val, FETCH_CHAR (n)); |
35692fe0 JB |
459 | return val; |
460 | } | |
461 | \f | |
87485d6f | 462 | DEFUN ("user-login-name", Fuser_login_name, Suser_login_name, 0, 1, 0, |
35692fe0 JB |
463 | "Return the name under which the user logged in, as a string.\n\ |
464 | This is based on the effective uid, not the real uid.\n\ | |
2c9ae24e | 465 | Also, if the environment variable LOGNAME or USER is set,\n\ |
87485d6f MW |
466 | that determines the value of this function.\n\n\ |
467 | If optional argument UID is an integer, return the login name of the user\n\ | |
468 | with that uid, or nil if there is no such user.") | |
469 | (uid) | |
470 | Lisp_Object uid; | |
35692fe0 | 471 | { |
87485d6f MW |
472 | struct passwd *pw; |
473 | ||
f8a0e364 RS |
474 | /* Set up the user name info if we didn't do it before. |
475 | (That can happen if Emacs is dumpable | |
476 | but you decide to run `temacs -l loadup' and not dump. */ | |
35b34f72 | 477 | if (INTEGERP (Vuser_login_name)) |
f8a0e364 | 478 | init_editfns (); |
87485d6f MW |
479 | |
480 | if (NILP (uid)) | |
35b34f72 | 481 | return Vuser_login_name; |
87485d6f MW |
482 | |
483 | CHECK_NUMBER (uid, 0); | |
484 | pw = (struct passwd *) getpwuid (XINT (uid)); | |
485 | return (pw ? build_string (pw->pw_name) : Qnil); | |
35692fe0 JB |
486 | } |
487 | ||
488 | DEFUN ("user-real-login-name", Fuser_real_login_name, Suser_real_login_name, | |
489 | 0, 0, 0, | |
490 | "Return the name of the user's real uid, as a string.\n\ | |
9658bdd0 | 491 | This ignores the environment variables LOGNAME and USER, so it differs from\n\ |
b1da234a | 492 | `user-login-name' when running under `su'.") |
35692fe0 JB |
493 | () |
494 | { | |
f8a0e364 RS |
495 | /* Set up the user name info if we didn't do it before. |
496 | (That can happen if Emacs is dumpable | |
497 | but you decide to run `temacs -l loadup' and not dump. */ | |
35b34f72 | 498 | if (INTEGERP (Vuser_login_name)) |
f8a0e364 | 499 | init_editfns (); |
35b34f72 | 500 | return Vuser_real_login_name; |
35692fe0 JB |
501 | } |
502 | ||
503 | DEFUN ("user-uid", Fuser_uid, Suser_uid, 0, 0, 0, | |
504 | "Return the effective uid of Emacs, as an integer.") | |
505 | () | |
506 | { | |
507 | return make_number (geteuid ()); | |
508 | } | |
509 | ||
510 | DEFUN ("user-real-uid", Fuser_real_uid, Suser_real_uid, 0, 0, 0, | |
511 | "Return the real uid of Emacs, as an integer.") | |
512 | () | |
513 | { | |
514 | return make_number (getuid ()); | |
515 | } | |
516 | ||
517 | DEFUN ("user-full-name", Fuser_full_name, Suser_full_name, 0, 0, 0, | |
518 | "Return the full name of the user logged in, as a string.") | |
519 | () | |
520 | { | |
521 | return Vuser_full_name; | |
522 | } | |
523 | ||
524 | DEFUN ("system-name", Fsystem_name, Ssystem_name, 0, 0, 0, | |
525 | "Return the name of the machine you are running on, as a string.") | |
526 | () | |
527 | { | |
528 | return Vsystem_name; | |
529 | } | |
530 | ||
ac988277 KH |
531 | /* For the benefit of callers who don't want to include lisp.h */ |
532 | char * | |
533 | get_system_name () | |
534 | { | |
316506b2 | 535 | return (char *) XSTRING (Vsystem_name)->data; |
ac988277 KH |
536 | } |
537 | ||
7fd233b3 RS |
538 | DEFUN ("emacs-pid", Femacs_pid, Semacs_pid, 0, 0, 0, |
539 | "Return the process ID of Emacs, as an integer.") | |
540 | () | |
541 | { | |
542 | return make_number (getpid ()); | |
543 | } | |
544 | ||
d940e0e4 | 545 | DEFUN ("current-time", Fcurrent_time, Scurrent_time, 0, 0, 0, |
e983fdb2 | 546 | "Return the current time, as the number of seconds since 1970-01-01 00:00:00.\n\ |
956ace37 JB |
547 | The time is returned as a list of three integers. The first has the\n\ |
548 | most significant 16 bits of the seconds, while the second has the\n\ | |
549 | least significant 16 bits. The third integer gives the microsecond\n\ | |
550 | count.\n\ | |
551 | \n\ | |
552 | The microsecond count is zero on systems that do not provide\n\ | |
553 | resolution finer than a second.") | |
d940e0e4 JB |
554 | () |
555 | { | |
956ace37 JB |
556 | EMACS_TIME t; |
557 | Lisp_Object result[3]; | |
558 | ||
559 | EMACS_GET_TIME (t); | |
d2fd0445 KH |
560 | XSETINT (result[0], (EMACS_SECS (t) >> 16) & 0xffff); |
561 | XSETINT (result[1], (EMACS_SECS (t) >> 0) & 0xffff); | |
562 | XSETINT (result[2], EMACS_USECS (t)); | |
956ace37 JB |
563 | |
564 | return Flist (3, result); | |
d940e0e4 JB |
565 | } |
566 | \f | |
567 | ||
e3120ab5 JB |
568 | static int |
569 | lisp_time_argument (specified_time, result) | |
570 | Lisp_Object specified_time; | |
571 | time_t *result; | |
572 | { | |
573 | if (NILP (specified_time)) | |
574 | return time (result) != -1; | |
575 | else | |
576 | { | |
577 | Lisp_Object high, low; | |
578 | high = Fcar (specified_time); | |
579 | CHECK_NUMBER (high, 0); | |
580 | low = Fcdr (specified_time); | |
ae683129 | 581 | if (CONSP (low)) |
e3120ab5 JB |
582 | low = Fcar (low); |
583 | CHECK_NUMBER (low, 0); | |
584 | *result = (XINT (high) << 16) + (XINT (low) & 0xffff); | |
585 | return *result >> 16 == XINT (high); | |
586 | } | |
587 | } | |
588 | ||
a82d387c RS |
589 | DEFUN ("format-time-string", Fformat_time_string, Sformat_time_string, 2, 2, 0, |
590 | "Use FORMAT-STRING to format the time TIME.\n\ | |
591 | TIME is specified as (HIGH LOW . IGNORED) or (HIGH . LOW), as from\n\ | |
592 | `current-time' and `file-attributes'.\n\ | |
593 | FORMAT-STRING may contain %-sequences to substitute parts of the time.\n\ | |
594 | %a is replaced by the abbreviated name of the day of week.\n\ | |
595 | %A is replaced by the full name of the day of week.\n\ | |
596 | %b is replaced by the abbreviated name of the month.\n\ | |
597 | %B is replaced by the full name of the month.\n\ | |
598 | %c is a synonym for \"%x %X\".\n\ | |
599 | %C is a locale-specific synonym, which defaults to \"%A, %B %e, %Y\" in the C locale.\n\ | |
600 | %d is replaced by the day of month, zero-padded.\n\ | |
601 | %D is a synonym for \"%m/%d/%y\".\n\ | |
602 | %e is replaced by the day of month, blank-padded.\n\ | |
603 | %h is a synonym for \"%b\".\n\ | |
604 | %H is replaced by the hour (00-23).\n\ | |
605 | %I is replaced by the hour (00-12).\n\ | |
606 | %j is replaced by the day of the year (001-366).\n\ | |
607 | %k is replaced by the hour (0-23), blank padded.\n\ | |
608 | %l is replaced by the hour (1-12), blank padded.\n\ | |
609 | %m is replaced by the month (01-12).\n\ | |
610 | %M is replaced by the minut (00-59).\n\ | |
611 | %n is a synonym for \"\\n\".\n\ | |
612 | %p is replaced by AM or PM, as appropriate.\n\ | |
613 | %r is a synonym for \"%I:%M:%S %p\".\n\ | |
614 | %R is a synonym for \"%H:%M\".\n\ | |
615 | %S is replaced by the seconds (00-60).\n\ | |
616 | %t is a synonym for \"\\t\".\n\ | |
617 | %T is a synonym for \"%H:%M:%S\".\n\ | |
618 | %U is replaced by the week of the year (01-52), first day of week is Sunday.\n\ | |
619 | %w is replaced by the day of week (0-6), Sunday is day 0.\n\ | |
620 | %W is replaced by the week of the year (01-52), first day of week is Monday.\n\ | |
621 | %x is a locale-specific synonym, which defaults to \"%D\" in the C locale.\n\ | |
622 | %X is a locale-specific synonym, which defaults to \"%T\" in the C locale.\n\ | |
623 | %y is replaced by the year without century (00-99).\n\ | |
624 | %Y is replaced by the year with century.\n\ | |
625 | %Z is replaced by the time zone abbreviation.\n\ | |
626 | \n\ | |
57937a87 | 627 | The number of options reflects the `strftime' function.") |
a82d387c RS |
628 | (format_string, time) |
629 | Lisp_Object format_string, time; | |
630 | { | |
631 | time_t value; | |
632 | int size; | |
633 | ||
634 | CHECK_STRING (format_string, 1); | |
635 | ||
636 | if (! lisp_time_argument (time, &value)) | |
637 | error ("Invalid time specification"); | |
638 | ||
639 | /* This is probably enough. */ | |
640 | size = XSTRING (format_string)->size * 6 + 50; | |
641 | ||
642 | while (1) | |
643 | { | |
644 | char *buf = (char *) alloca (size); | |
57937a87 RS |
645 | if (emacs_strftime (buf, size, XSTRING (format_string)->data, |
646 | localtime (&value))) | |
a82d387c RS |
647 | return build_string (buf); |
648 | /* If buffer was too small, make it bigger. */ | |
649 | size *= 2; | |
650 | } | |
651 | } | |
652 | ||
4691c06d RS |
653 | DEFUN ("decode-time", Fdecode_time, Sdecode_time, 0, 1, 0, |
654 | "Decode a time value as (SEC MINUTE HOUR DAY MONTH YEAR DOW DST ZONE).\n\ | |
655 | The optional SPECIFIED-TIME should be a list of (HIGH LOW . IGNORED)\n\ | |
656 | or (HIGH . LOW), as from `current-time' and `file-attributes', or `nil'\n\ | |
657 | to use the current time. The list has the following nine members:\n\ | |
145b0681 RS |
658 | SEC is an integer between 0 and 60; SEC is 60 for a leap second, which\n\ |
659 | only some operating systems support. MINUTE is an integer between 0 and 59.\n\ | |
4691c06d RS |
660 | HOUR is an integer between 0 and 23. DAY is an integer between 1 and 31.\n\ |
661 | MONTH is an integer between 1 and 12. YEAR is an integer indicating the\n\ | |
662 | four-digit year. DOW is the day of week, an integer between 0 and 6, where\n\ | |
663 | 0 is Sunday. DST is t if daylight savings time is effect, otherwise nil.\n\ | |
664 | ZONE is an integer indicating the number of seconds east of Greenwich.\n\ | |
2c6c7c72 | 665 | \(Note that Common Lisp has different meanings for DOW and ZONE.)") |
4691c06d RS |
666 | (specified_time) |
667 | Lisp_Object specified_time; | |
668 | { | |
669 | time_t time_spec; | |
3c887943 | 670 | struct tm save_tm; |
4691c06d RS |
671 | struct tm *decoded_time; |
672 | Lisp_Object list_args[9]; | |
673 | ||
674 | if (! lisp_time_argument (specified_time, &time_spec)) | |
675 | error ("Invalid time specification"); | |
676 | ||
677 | decoded_time = localtime (&time_spec); | |
3c887943 KH |
678 | XSETFASTINT (list_args[0], decoded_time->tm_sec); |
679 | XSETFASTINT (list_args[1], decoded_time->tm_min); | |
680 | XSETFASTINT (list_args[2], decoded_time->tm_hour); | |
681 | XSETFASTINT (list_args[3], decoded_time->tm_mday); | |
682 | XSETFASTINT (list_args[4], decoded_time->tm_mon + 1); | |
683 | XSETFASTINT (list_args[5], decoded_time->tm_year + 1900); | |
684 | XSETFASTINT (list_args[6], decoded_time->tm_wday); | |
4691c06d | 685 | list_args[7] = (decoded_time->tm_isdst)? Qt : Qnil; |
3c887943 KH |
686 | |
687 | /* Make a copy, in case gmtime modifies the struct. */ | |
688 | save_tm = *decoded_time; | |
689 | decoded_time = gmtime (&time_spec); | |
690 | if (decoded_time == 0) | |
691 | list_args[8] = Qnil; | |
692 | else | |
693 | XSETINT (list_args[8], difftm (&save_tm, decoded_time)); | |
4691c06d RS |
694 | return Flist (9, list_args); |
695 | } | |
696 | ||
cce7b8a0 | 697 | DEFUN ("encode-time", Fencode_time, Sencode_time, 6, 7, 0, |
d65666d5 | 698 | "Convert SEC, MINUTE, HOUR, DAY, MONTH, YEAR and ZONE to internal time.\n\ |
167d976b | 699 | This is the reverse operation of `decode-time', which see. ZONE defaults\n\ |
c59b5089 PE |
700 | to the current time zone rule if not specified; if specified, it can\n\ |
701 | be a string (as from `set-time-zone-rule'), or it can be a list\n\ | |
702 | (as from `current-time-zone') or an integer (as from `decode-time')\n\ | |
703 | applied without consideration for daylight savings time.\n\ | |
704 | Out-of-range values for SEC, MINUTE, HOUR, DAY, or MONTH are allowed;\n\ | |
705 | for example, a DAY of 0 means the day preceding the given month.\n\ | |
01ba8cce | 706 | Year numbers less than 100 are treated just like other year numbers.\n\ |
c59b5089 | 707 | If you want them to stand for years in this century, you must do that yourself.") |
d65666d5 RS |
708 | (sec, minute, hour, day, month, year, zone) |
709 | Lisp_Object sec, minute, hour, day, month, year, zone; | |
cce7b8a0 | 710 | { |
1b8fa736 | 711 | time_t time; |
c59b5089 PE |
712 | struct tm tm; |
713 | ||
714 | CHECK_NUMBER (sec, 0); | |
715 | CHECK_NUMBER (minute, 1); | |
716 | CHECK_NUMBER (hour, 2); | |
717 | CHECK_NUMBER (day, 3); | |
718 | CHECK_NUMBER (month, 4); | |
719 | CHECK_NUMBER (year, 5); | |
720 | ||
721 | tm.tm_sec = XINT (sec); | |
722 | tm.tm_min = XINT (minute); | |
723 | tm.tm_hour = XINT (hour); | |
724 | tm.tm_mday = XINT (day); | |
725 | tm.tm_mon = XINT (month) - 1; | |
726 | tm.tm_year = XINT (year) - 1900; | |
727 | tm.tm_isdst = -1; | |
728 | ||
729 | if (CONSP (zone)) | |
730 | zone = Fcar (zone); | |
1b8fa736 | 731 | if (NILP (zone)) |
c59b5089 PE |
732 | time = mktime (&tm); |
733 | else | |
1b8fa736 | 734 | { |
c59b5089 PE |
735 | char tzbuf[100]; |
736 | char *tzstring; | |
737 | char **oldenv = environ, **newenv; | |
738 | ||
739 | if (STRINGP (zone)) | |
4d4c1514 | 740 | tzstring = (char *) XSTRING (zone)->data; |
c59b5089 | 741 | else if (INTEGERP (zone)) |
1b8fa736 | 742 | { |
c59b5089 PE |
743 | int abszone = abs (XINT (zone)); |
744 | sprintf (tzbuf, "XXX%s%d:%02d:%02d", "-" + (XINT (zone) < 0), | |
745 | abszone / (60*60), (abszone/60) % 60, abszone % 60); | |
746 | tzstring = tzbuf; | |
1b8fa736 | 747 | } |
c59b5089 PE |
748 | else |
749 | error ("Invalid time zone specification"); | |
750 | ||
751 | /* Set TZ before calling mktime; merely adjusting mktime's returned | |
752 | value doesn't suffice, since that would mishandle leap seconds. */ | |
753 | set_time_zone_rule (tzstring); | |
754 | ||
755 | time = mktime (&tm); | |
756 | ||
757 | /* Restore TZ to previous value. */ | |
758 | newenv = environ; | |
759 | environ = oldenv; | |
760 | free (newenv); | |
761 | #ifdef LOCALTIME_CACHE | |
762 | tzset (); | |
763 | #endif | |
1b8fa736 | 764 | } |
1b8fa736 | 765 | |
c59b5089 PE |
766 | if (time == (time_t) -1) |
767 | error ("Specified time is not representable"); | |
768 | ||
769 | return make_time (time); | |
cce7b8a0 RS |
770 | } |
771 | ||
2148f2b4 | 772 | DEFUN ("current-time-string", Fcurrent_time_string, Scurrent_time_string, 0, 1, 0, |
35692fe0 | 773 | "Return the current time, as a human-readable string.\n\ |
2148f2b4 RS |
774 | Programs can use this function to decode a time,\n\ |
775 | since the number of columns in each field is fixed.\n\ | |
776 | The format is `Sun Sep 16 01:03:52 1973'.\n\ | |
777 | If an argument is given, it specifies a time to format\n\ | |
778 | instead of the current time. The argument should have the form:\n\ | |
779 | (HIGH . LOW)\n\ | |
780 | or the form:\n\ | |
781 | (HIGH LOW . IGNORED).\n\ | |
782 | Thus, you can use times obtained from `current-time'\n\ | |
783 | and from `file-attributes'.") | |
784 | (specified_time) | |
785 | Lisp_Object specified_time; | |
786 | { | |
e3120ab5 | 787 | time_t value; |
35692fe0 | 788 | char buf[30]; |
2148f2b4 RS |
789 | register char *tem; |
790 | ||
e3120ab5 JB |
791 | if (! lisp_time_argument (specified_time, &value)) |
792 | value = -1; | |
2148f2b4 | 793 | tem = (char *) ctime (&value); |
35692fe0 JB |
794 | |
795 | strncpy (buf, tem, 24); | |
796 | buf[24] = 0; | |
797 | ||
798 | return build_string (buf); | |
799 | } | |
c2662aea | 800 | |
e3120ab5 JB |
801 | #define TM_YEAR_ORIGIN 1900 |
802 | ||
803 | /* Yield A - B, measured in seconds. */ | |
804 | static long | |
8e718b4e | 805 | difftm (a, b) |
e3120ab5 JB |
806 | struct tm *a, *b; |
807 | { | |
808 | int ay = a->tm_year + (TM_YEAR_ORIGIN - 1); | |
809 | int by = b->tm_year + (TM_YEAR_ORIGIN - 1); | |
8e718b4e | 810 | /* Some compilers can't handle this as a single return statement. */ |
68a49b18 | 811 | long days = ( |
8e718b4e KH |
812 | /* difference in day of year */ |
813 | a->tm_yday - b->tm_yday | |
814 | /* + intervening leap days */ | |
815 | + ((ay >> 2) - (by >> 2)) | |
816 | - (ay/100 - by/100) | |
817 | + ((ay/100 >> 2) - (by/100 >> 2)) | |
818 | /* + difference in years * 365 */ | |
819 | + (long)(ay-by) * 365 | |
820 | ); | |
821 | return (60*(60*(24*days + (a->tm_hour - b->tm_hour)) | |
822 | + (a->tm_min - b->tm_min)) | |
823 | + (a->tm_sec - b->tm_sec)); | |
e3120ab5 JB |
824 | } |
825 | ||
826 | DEFUN ("current-time-zone", Fcurrent_time_zone, Scurrent_time_zone, 0, 1, 0, | |
827 | "Return the offset and name for the local time zone.\n\ | |
828 | This returns a list of the form (OFFSET NAME).\n\ | |
829 | OFFSET is an integer number of seconds ahead of UTC (east of Greenwich).\n\ | |
830 | A negative value means west of Greenwich.\n\ | |
831 | NAME is a string giving the name of the time zone.\n\ | |
832 | If an argument is given, it specifies when the time zone offset is determined\n\ | |
833 | instead of using the current time. The argument should have the form:\n\ | |
834 | (HIGH . LOW)\n\ | |
835 | or the form:\n\ | |
836 | (HIGH LOW . IGNORED).\n\ | |
837 | Thus, you can use times obtained from `current-time'\n\ | |
838 | and from `file-attributes'.\n\ | |
773c1fd3 JB |
839 | \n\ |
840 | Some operating systems cannot provide all this information to Emacs;\n\ | |
2d88f747 | 841 | in this case, `current-time-zone' returns a list containing nil for\n\ |
773c1fd3 | 842 | the data it can't find.") |
e3120ab5 JB |
843 | (specified_time) |
844 | Lisp_Object specified_time; | |
c2662aea | 845 | { |
e3120ab5 JB |
846 | time_t value; |
847 | struct tm *t; | |
c2662aea | 848 | |
e3120ab5 | 849 | if (lisp_time_argument (specified_time, &value) |
2d88f747 | 850 | && (t = gmtime (&value)) != 0) |
e3120ab5 | 851 | { |
2d88f747 | 852 | struct tm gmt; |
e3120ab5 JB |
853 | long offset; |
854 | char *s, buf[6]; | |
2d88f747 RS |
855 | |
856 | gmt = *t; /* Make a copy, in case localtime modifies *t. */ | |
857 | t = localtime (&value); | |
858 | offset = difftm (t, &gmt); | |
e3120ab5 JB |
859 | s = 0; |
860 | #ifdef HAVE_TM_ZONE | |
861 | if (t->tm_zone) | |
5fd4de15 | 862 | s = (char *)t->tm_zone; |
a7971c39 RS |
863 | #else /* not HAVE_TM_ZONE */ |
864 | #ifdef HAVE_TZNAME | |
865 | if (t->tm_isdst == 0 || t->tm_isdst == 1) | |
866 | s = tzname[t->tm_isdst]; | |
c2662aea | 867 | #endif |
a7971c39 | 868 | #endif /* not HAVE_TM_ZONE */ |
e3120ab5 JB |
869 | if (!s) |
870 | { | |
871 | /* No local time zone name is available; use "+-NNNN" instead. */ | |
00fc94d0 | 872 | int am = (offset < 0 ? -offset : offset) / 60; |
e3120ab5 JB |
873 | sprintf (buf, "%c%02d%02d", (offset < 0 ? '-' : '+'), am/60, am%60); |
874 | s = buf; | |
875 | } | |
876 | return Fcons (make_number (offset), Fcons (build_string (s), Qnil)); | |
877 | } | |
878 | else | |
879 | return Fmake_list (2, Qnil); | |
c2662aea JB |
880 | } |
881 | ||
143cb9a9 RS |
882 | DEFUN ("set-time-zone-rule", Fset_time_zone_rule, Sset_time_zone_rule, 1, 1, 0, |
883 | "Set the local time zone using TZ, a string specifying a time zone rule.\n\ | |
884 | If TZ is nil, use implementation-defined default time zone information.") | |
885 | (tz) | |
886 | Lisp_Object tz; | |
887 | { | |
143cb9a9 | 888 | static char **environbuf; |
143cb9a9 RS |
889 | char *tzstring; |
890 | ||
891 | if (NILP (tz)) | |
892 | tzstring = 0; | |
893 | else | |
894 | { | |
895 | CHECK_STRING (tz, 0); | |
4d4c1514 | 896 | tzstring = (char *) XSTRING (tz)->data; |
143cb9a9 RS |
897 | } |
898 | ||
c59b5089 PE |
899 | set_time_zone_rule (tzstring); |
900 | if (environbuf) | |
901 | free (environbuf); | |
902 | environbuf = environ; | |
903 | ||
904 | return Qnil; | |
905 | } | |
906 | ||
907 | /* Set the local time zone rule to TZSTRING. | |
908 | This allocates memory into `environ', which it is the caller's | |
909 | responsibility to free. */ | |
910 | static void | |
911 | set_time_zone_rule (tzstring) | |
912 | char *tzstring; | |
913 | { | |
914 | int envptrs; | |
915 | char **from, **to, **newenv; | |
916 | ||
143cb9a9 RS |
917 | for (from = environ; *from; from++) |
918 | continue; | |
919 | envptrs = from - environ + 2; | |
920 | newenv = to = (char **) xmalloc (envptrs * sizeof (char *) | |
921 | + (tzstring ? strlen (tzstring) + 4 : 0)); | |
922 | if (tzstring) | |
923 | { | |
924 | char *t = (char *) (to + envptrs); | |
925 | strcpy (t, "TZ="); | |
926 | strcat (t, tzstring); | |
927 | *to++ = t; | |
928 | } | |
929 | ||
930 | for (from = environ; *from; from++) | |
931 | if (strncmp (*from, "TZ=", 3) != 0) | |
932 | *to++ = *from; | |
933 | *to = 0; | |
934 | ||
935 | environ = newenv; | |
143cb9a9 RS |
936 | |
937 | #ifdef LOCALTIME_CACHE | |
938 | tzset (); | |
939 | #endif | |
143cb9a9 | 940 | } |
35692fe0 JB |
941 | \f |
942 | void | |
943 | insert1 (arg) | |
944 | Lisp_Object arg; | |
945 | { | |
946 | Finsert (1, &arg); | |
947 | } | |
948 | ||
52b14ac0 JB |
949 | |
950 | /* Callers passing one argument to Finsert need not gcpro the | |
951 | argument "array", since the only element of the array will | |
952 | not be used after calling insert or insert_from_string, so | |
953 | we don't care if it gets trashed. */ | |
954 | ||
35692fe0 JB |
955 | DEFUN ("insert", Finsert, Sinsert, 0, MANY, 0, |
956 | "Insert the arguments, either strings or characters, at point.\n\ | |
957 | Point moves forward so that it ends up after the inserted text.\n\ | |
958 | Any other markers at the point of insertion remain before the text.") | |
959 | (nargs, args) | |
960 | int nargs; | |
961 | register Lisp_Object *args; | |
962 | { | |
963 | register int argnum; | |
964 | register Lisp_Object tem; | |
965 | char str[1]; | |
35692fe0 JB |
966 | |
967 | for (argnum = 0; argnum < nargs; argnum++) | |
968 | { | |
969 | tem = args[argnum]; | |
970 | retry: | |
ae683129 | 971 | if (INTEGERP (tem)) |
35692fe0 JB |
972 | { |
973 | str[0] = XINT (tem); | |
974 | insert (str, 1); | |
975 | } | |
ae683129 | 976 | else if (STRINGP (tem)) |
35692fe0 | 977 | { |
be91036a RS |
978 | insert_from_string (tem, 0, XSTRING (tem)->size, 0); |
979 | } | |
980 | else | |
981 | { | |
982 | tem = wrong_type_argument (Qchar_or_string_p, tem); | |
983 | goto retry; | |
984 | } | |
985 | } | |
986 | ||
987 | return Qnil; | |
988 | } | |
989 | ||
990 | DEFUN ("insert-and-inherit", Finsert_and_inherit, Sinsert_and_inherit, | |
991 | 0, MANY, 0, | |
992 | "Insert the arguments at point, inheriting properties from adjoining text.\n\ | |
993 | Point moves forward so that it ends up after the inserted text.\n\ | |
994 | Any other markers at the point of insertion remain before the text.") | |
995 | (nargs, args) | |
996 | int nargs; | |
997 | register Lisp_Object *args; | |
998 | { | |
999 | register int argnum; | |
1000 | register Lisp_Object tem; | |
1001 | char str[1]; | |
1002 | ||
1003 | for (argnum = 0; argnum < nargs; argnum++) | |
1004 | { | |
1005 | tem = args[argnum]; | |
1006 | retry: | |
ae683129 | 1007 | if (INTEGERP (tem)) |
be91036a RS |
1008 | { |
1009 | str[0] = XINT (tem); | |
107740f5 | 1010 | insert_and_inherit (str, 1); |
be91036a | 1011 | } |
ae683129 | 1012 | else if (STRINGP (tem)) |
be91036a RS |
1013 | { |
1014 | insert_from_string (tem, 0, XSTRING (tem)->size, 1); | |
35692fe0 JB |
1015 | } |
1016 | else | |
1017 | { | |
1018 | tem = wrong_type_argument (Qchar_or_string_p, tem); | |
1019 | goto retry; | |
1020 | } | |
1021 | } | |
1022 | ||
35692fe0 JB |
1023 | return Qnil; |
1024 | } | |
1025 | ||
1026 | DEFUN ("insert-before-markers", Finsert_before_markers, Sinsert_before_markers, 0, MANY, 0, | |
1027 | "Insert strings or characters at point, relocating markers after the text.\n\ | |
1028 | Point moves forward so that it ends up after the inserted text.\n\ | |
1029 | Any other markers at the point of insertion also end up after the text.") | |
1030 | (nargs, args) | |
1031 | int nargs; | |
1032 | register Lisp_Object *args; | |
1033 | { | |
1034 | register int argnum; | |
1035 | register Lisp_Object tem; | |
1036 | char str[1]; | |
35692fe0 JB |
1037 | |
1038 | for (argnum = 0; argnum < nargs; argnum++) | |
1039 | { | |
1040 | tem = args[argnum]; | |
1041 | retry: | |
ae683129 | 1042 | if (INTEGERP (tem)) |
35692fe0 JB |
1043 | { |
1044 | str[0] = XINT (tem); | |
1045 | insert_before_markers (str, 1); | |
1046 | } | |
ae683129 | 1047 | else if (STRINGP (tem)) |
35692fe0 | 1048 | { |
be91036a RS |
1049 | insert_from_string_before_markers (tem, 0, XSTRING (tem)->size, 0); |
1050 | } | |
1051 | else | |
1052 | { | |
1053 | tem = wrong_type_argument (Qchar_or_string_p, tem); | |
1054 | goto retry; | |
1055 | } | |
1056 | } | |
1057 | ||
1058 | return Qnil; | |
1059 | } | |
1060 | ||
1061 | DEFUN ("insert-before-markers-and-inherit", | |
1062 | Finsert_and_inherit_before_markers, Sinsert_and_inherit_before_markers, | |
1063 | 0, MANY, 0, | |
1064 | "Insert text at point, relocating markers and inheriting properties.\n\ | |
1065 | Point moves forward so that it ends up after the inserted text.\n\ | |
1066 | Any other markers at the point of insertion also end up after the text.") | |
1067 | (nargs, args) | |
1068 | int nargs; | |
1069 | register Lisp_Object *args; | |
1070 | { | |
1071 | register int argnum; | |
1072 | register Lisp_Object tem; | |
1073 | char str[1]; | |
1074 | ||
1075 | for (argnum = 0; argnum < nargs; argnum++) | |
1076 | { | |
1077 | tem = args[argnum]; | |
1078 | retry: | |
ae683129 | 1079 | if (INTEGERP (tem)) |
be91036a RS |
1080 | { |
1081 | str[0] = XINT (tem); | |
107740f5 | 1082 | insert_before_markers_and_inherit (str, 1); |
be91036a | 1083 | } |
ae683129 | 1084 | else if (STRINGP (tem)) |
be91036a RS |
1085 | { |
1086 | insert_from_string_before_markers (tem, 0, XSTRING (tem)->size, 1); | |
35692fe0 JB |
1087 | } |
1088 | else | |
1089 | { | |
1090 | tem = wrong_type_argument (Qchar_or_string_p, tem); | |
1091 | goto retry; | |
1092 | } | |
1093 | } | |
1094 | ||
35692fe0 JB |
1095 | return Qnil; |
1096 | } | |
1097 | \f | |
e2eeabbb | 1098 | DEFUN ("insert-char", Finsert_char, Sinsert_char, 2, 3, 0, |
35692fe0 JB |
1099 | "Insert COUNT (second arg) copies of CHAR (first arg).\n\ |
1100 | Point and all markers are affected as in the function `insert'.\n\ | |
e2eeabbb RS |
1101 | Both arguments are required.\n\ |
1102 | The optional third arg INHERIT, if non-nil, says to inherit text properties\n\ | |
1103 | from adjoining text, if those properties are sticky.") | |
1104 | (chr, count, inherit) | |
1105 | Lisp_Object chr, count, inherit; | |
35692fe0 JB |
1106 | { |
1107 | register unsigned char *string; | |
1108 | register int strlen; | |
1109 | register int i, n; | |
1110 | ||
1111 | CHECK_NUMBER (chr, 0); | |
1112 | CHECK_NUMBER (count, 1); | |
1113 | ||
1114 | n = XINT (count); | |
1115 | if (n <= 0) | |
1116 | return Qnil; | |
1117 | strlen = min (n, 256); | |
1118 | string = (unsigned char *) alloca (strlen); | |
1119 | for (i = 0; i < strlen; i++) | |
1120 | string[i] = XFASTINT (chr); | |
1121 | while (n >= strlen) | |
1122 | { | |
e2eeabbb RS |
1123 | if (!NILP (inherit)) |
1124 | insert_and_inherit (string, strlen); | |
1125 | else | |
1126 | insert (string, strlen); | |
35692fe0 JB |
1127 | n -= strlen; |
1128 | } | |
1129 | if (n > 0) | |
83951f1e KH |
1130 | { |
1131 | if (!NILP (inherit)) | |
1132 | insert_and_inherit (string, n); | |
1133 | else | |
1134 | insert (string, n); | |
1135 | } | |
35692fe0 JB |
1136 | return Qnil; |
1137 | } | |
1138 | ||
1139 | \f | |
ffd56f97 JB |
1140 | /* Making strings from buffer contents. */ |
1141 | ||
1142 | /* Return a Lisp_String containing the text of the current buffer from | |
74d6d8c5 | 1143 | START to END. If text properties are in use and the current buffer |
eb8c3be9 | 1144 | has properties in the range specified, the resulting string will also |
74d6d8c5 | 1145 | have them. |
ffd56f97 JB |
1146 | |
1147 | We don't want to use plain old make_string here, because it calls | |
1148 | make_uninit_string, which can cause the buffer arena to be | |
1149 | compacted. make_string has no way of knowing that the data has | |
1150 | been moved, and thus copies the wrong data into the string. This | |
1151 | doesn't effect most of the other users of make_string, so it should | |
1152 | be left as is. But we should use this function when conjuring | |
1153 | buffer substrings. */ | |
74d6d8c5 | 1154 | |
ffd56f97 JB |
1155 | Lisp_Object |
1156 | make_buffer_string (start, end) | |
1157 | int start, end; | |
1158 | { | |
36b0d50e | 1159 | Lisp_Object result, tem, tem1; |
ffd56f97 JB |
1160 | |
1161 | if (start < GPT && GPT < end) | |
1162 | move_gap (start); | |
1163 | ||
1164 | result = make_uninit_string (end - start); | |
1165 | bcopy (&FETCH_CHAR (start), XSTRING (result)->data, end - start); | |
1166 | ||
60b96ee7 | 1167 | tem = Fnext_property_change (make_number (start), Qnil, make_number (end)); |
36b0d50e | 1168 | tem1 = Ftext_properties_at (make_number (start), Qnil); |
60b96ee7 RS |
1169 | |
1170 | #ifdef USE_TEXT_PROPERTIES | |
36b0d50e | 1171 | if (XINT (tem) != end || !NILP (tem1)) |
60b96ee7 RS |
1172 | copy_intervals_to_string (result, current_buffer, start, end - start); |
1173 | #endif | |
74d6d8c5 | 1174 | |
ffd56f97 JB |
1175 | return result; |
1176 | } | |
35692fe0 JB |
1177 | |
1178 | DEFUN ("buffer-substring", Fbuffer_substring, Sbuffer_substring, 2, 2, 0, | |
1179 | "Return the contents of part of the current buffer as a string.\n\ | |
1180 | The two arguments START and END are character positions;\n\ | |
1181 | they can be in either order.") | |
1182 | (b, e) | |
1183 | Lisp_Object b, e; | |
1184 | { | |
1185 | register int beg, end; | |
35692fe0 JB |
1186 | |
1187 | validate_region (&b, &e); | |
1188 | beg = XINT (b); | |
1189 | end = XINT (e); | |
1190 | ||
ffd56f97 | 1191 | return make_buffer_string (beg, end); |
35692fe0 JB |
1192 | } |
1193 | ||
1194 | DEFUN ("buffer-string", Fbuffer_string, Sbuffer_string, 0, 0, 0, | |
af7bd86c KH |
1195 | "Return the contents of the current buffer as a string.\n\ |
1196 | If narrowing is in effect, this function returns only the visible part\n\ | |
1197 | of the buffer.") | |
35692fe0 JB |
1198 | () |
1199 | { | |
ffd56f97 | 1200 | return make_buffer_string (BEGV, ZV); |
35692fe0 JB |
1201 | } |
1202 | ||
1203 | DEFUN ("insert-buffer-substring", Finsert_buffer_substring, Sinsert_buffer_substring, | |
1204 | 1, 3, 0, | |
83ea6fc2 | 1205 | "Insert before point a substring of the contents of buffer BUFFER.\n\ |
35692fe0 JB |
1206 | BUFFER may be a buffer or a buffer name.\n\ |
1207 | Arguments START and END are character numbers specifying the substring.\n\ | |
1208 | They default to the beginning and the end of BUFFER.") | |
1209 | (buf, b, e) | |
1210 | Lisp_Object buf, b, e; | |
1211 | { | |
b1b0ee5a | 1212 | register int beg, end, temp; |
35692fe0 | 1213 | register struct buffer *bp; |
3fff2dfa | 1214 | Lisp_Object buffer; |
35692fe0 | 1215 | |
3fff2dfa RS |
1216 | buffer = Fget_buffer (buf); |
1217 | if (NILP (buffer)) | |
1218 | nsberror (buf); | |
1219 | bp = XBUFFER (buffer); | |
35692fe0 | 1220 | |
56a98455 | 1221 | if (NILP (b)) |
35692fe0 JB |
1222 | beg = BUF_BEGV (bp); |
1223 | else | |
1224 | { | |
1225 | CHECK_NUMBER_COERCE_MARKER (b, 0); | |
1226 | beg = XINT (b); | |
1227 | } | |
56a98455 | 1228 | if (NILP (e)) |
35692fe0 JB |
1229 | end = BUF_ZV (bp); |
1230 | else | |
1231 | { | |
1232 | CHECK_NUMBER_COERCE_MARKER (e, 1); | |
1233 | end = XINT (e); | |
1234 | } | |
1235 | ||
1236 | if (beg > end) | |
74d6d8c5 | 1237 | temp = beg, beg = end, end = temp; |
35692fe0 | 1238 | |
b1b0ee5a | 1239 | if (!(BUF_BEGV (bp) <= beg && end <= BUF_ZV (bp))) |
35692fe0 JB |
1240 | args_out_of_range (b, e); |
1241 | ||
b1b0ee5a | 1242 | insert_from_buffer (bp, beg, end - beg, 0); |
35692fe0 JB |
1243 | return Qnil; |
1244 | } | |
e9cf2084 RS |
1245 | |
1246 | DEFUN ("compare-buffer-substrings", Fcompare_buffer_substrings, Scompare_buffer_substrings, | |
1247 | 6, 6, 0, | |
1248 | "Compare two substrings of two buffers; return result as number.\n\ | |
1249 | the value is -N if first string is less after N-1 chars,\n\ | |
1250 | +N if first string is greater after N-1 chars, or 0 if strings match.\n\ | |
1251 | Each substring is represented as three arguments: BUFFER, START and END.\n\ | |
1252 | That makes six args in all, three for each substring.\n\n\ | |
1253 | The value of `case-fold-search' in the current buffer\n\ | |
1254 | determines whether case is significant or ignored.") | |
1255 | (buffer1, start1, end1, buffer2, start2, end2) | |
1256 | Lisp_Object buffer1, start1, end1, buffer2, start2, end2; | |
1257 | { | |
1258 | register int begp1, endp1, begp2, endp2, temp, len1, len2, length, i; | |
1259 | register struct buffer *bp1, *bp2; | |
1260 | register unsigned char *trt | |
1261 | = (!NILP (current_buffer->case_fold_search) | |
1262 | ? XSTRING (current_buffer->case_canon_table)->data : 0); | |
1263 | ||
1264 | /* Find the first buffer and its substring. */ | |
1265 | ||
1266 | if (NILP (buffer1)) | |
1267 | bp1 = current_buffer; | |
1268 | else | |
1269 | { | |
3fff2dfa RS |
1270 | Lisp_Object buf1; |
1271 | buf1 = Fget_buffer (buffer1); | |
1272 | if (NILP (buf1)) | |
1273 | nsberror (buffer1); | |
1274 | bp1 = XBUFFER (buf1); | |
e9cf2084 RS |
1275 | } |
1276 | ||
1277 | if (NILP (start1)) | |
1278 | begp1 = BUF_BEGV (bp1); | |
1279 | else | |
1280 | { | |
1281 | CHECK_NUMBER_COERCE_MARKER (start1, 1); | |
1282 | begp1 = XINT (start1); | |
1283 | } | |
1284 | if (NILP (end1)) | |
1285 | endp1 = BUF_ZV (bp1); | |
1286 | else | |
1287 | { | |
1288 | CHECK_NUMBER_COERCE_MARKER (end1, 2); | |
1289 | endp1 = XINT (end1); | |
1290 | } | |
1291 | ||
1292 | if (begp1 > endp1) | |
1293 | temp = begp1, begp1 = endp1, endp1 = temp; | |
1294 | ||
1295 | if (!(BUF_BEGV (bp1) <= begp1 | |
1296 | && begp1 <= endp1 | |
1297 | && endp1 <= BUF_ZV (bp1))) | |
1298 | args_out_of_range (start1, end1); | |
1299 | ||
1300 | /* Likewise for second substring. */ | |
1301 | ||
1302 | if (NILP (buffer2)) | |
1303 | bp2 = current_buffer; | |
1304 | else | |
1305 | { | |
3fff2dfa RS |
1306 | Lisp_Object buf2; |
1307 | buf2 = Fget_buffer (buffer2); | |
1308 | if (NILP (buf2)) | |
1309 | nsberror (buffer2); | |
e9cf2084 RS |
1310 | bp2 = XBUFFER (buffer2); |
1311 | } | |
1312 | ||
1313 | if (NILP (start2)) | |
1314 | begp2 = BUF_BEGV (bp2); | |
1315 | else | |
1316 | { | |
1317 | CHECK_NUMBER_COERCE_MARKER (start2, 4); | |
1318 | begp2 = XINT (start2); | |
1319 | } | |
1320 | if (NILP (end2)) | |
1321 | endp2 = BUF_ZV (bp2); | |
1322 | else | |
1323 | { | |
1324 | CHECK_NUMBER_COERCE_MARKER (end2, 5); | |
1325 | endp2 = XINT (end2); | |
1326 | } | |
1327 | ||
1328 | if (begp2 > endp2) | |
1329 | temp = begp2, begp2 = endp2, endp2 = temp; | |
1330 | ||
1331 | if (!(BUF_BEGV (bp2) <= begp2 | |
1332 | && begp2 <= endp2 | |
1333 | && endp2 <= BUF_ZV (bp2))) | |
1334 | args_out_of_range (start2, end2); | |
1335 | ||
1336 | len1 = endp1 - begp1; | |
1337 | len2 = endp2 - begp2; | |
1338 | length = len1; | |
1339 | if (len2 < length) | |
1340 | length = len2; | |
1341 | ||
1342 | for (i = 0; i < length; i++) | |
1343 | { | |
1344 | int c1 = *BUF_CHAR_ADDRESS (bp1, begp1 + i); | |
1345 | int c2 = *BUF_CHAR_ADDRESS (bp2, begp2 + i); | |
1346 | if (trt) | |
1347 | { | |
1348 | c1 = trt[c1]; | |
1349 | c2 = trt[c2]; | |
1350 | } | |
1351 | if (c1 < c2) | |
1352 | return make_number (- 1 - i); | |
1353 | if (c1 > c2) | |
1354 | return make_number (i + 1); | |
1355 | } | |
1356 | ||
1357 | /* The strings match as far as they go. | |
1358 | If one is shorter, that one is less. */ | |
1359 | if (length < len1) | |
1360 | return make_number (length + 1); | |
1361 | else if (length < len2) | |
1362 | return make_number (- length - 1); | |
1363 | ||
1364 | /* Same length too => they are equal. */ | |
1365 | return make_number (0); | |
1366 | } | |
35692fe0 | 1367 | \f |
d5a539cd RS |
1368 | static Lisp_Object |
1369 | subst_char_in_region_unwind (arg) | |
1370 | Lisp_Object arg; | |
1371 | { | |
1372 | return current_buffer->undo_list = arg; | |
1373 | } | |
1374 | ||
c8e76b47 RS |
1375 | static Lisp_Object |
1376 | subst_char_in_region_unwind_1 (arg) | |
1377 | Lisp_Object arg; | |
1378 | { | |
1379 | return current_buffer->filename = arg; | |
1380 | } | |
1381 | ||
35692fe0 JB |
1382 | DEFUN ("subst-char-in-region", Fsubst_char_in_region, |
1383 | Ssubst_char_in_region, 4, 5, 0, | |
1384 | "From START to END, replace FROMCHAR with TOCHAR each time it occurs.\n\ | |
1385 | If optional arg NOUNDO is non-nil, don't record this change for undo\n\ | |
1386 | and don't mark the buffer as really changed.") | |
1387 | (start, end, fromchar, tochar, noundo) | |
1388 | Lisp_Object start, end, fromchar, tochar, noundo; | |
1389 | { | |
1390 | register int pos, stop, look; | |
60b96ee7 | 1391 | int changed = 0; |
d5a539cd | 1392 | int count = specpdl_ptr - specpdl; |
35692fe0 JB |
1393 | |
1394 | validate_region (&start, &end); | |
1395 | CHECK_NUMBER (fromchar, 2); | |
1396 | CHECK_NUMBER (tochar, 3); | |
1397 | ||
1398 | pos = XINT (start); | |
1399 | stop = XINT (end); | |
1400 | look = XINT (fromchar); | |
1401 | ||
d5a539cd RS |
1402 | /* If we don't want undo, turn off putting stuff on the list. |
1403 | That's faster than getting rid of things, | |
c8e76b47 RS |
1404 | and it prevents even the entry for a first change. |
1405 | Also inhibit locking the file. */ | |
d5a539cd RS |
1406 | if (!NILP (noundo)) |
1407 | { | |
1408 | record_unwind_protect (subst_char_in_region_unwind, | |
1409 | current_buffer->undo_list); | |
1410 | current_buffer->undo_list = Qt; | |
c8e76b47 RS |
1411 | /* Don't do file-locking. */ |
1412 | record_unwind_protect (subst_char_in_region_unwind_1, | |
1413 | current_buffer->filename); | |
1414 | current_buffer->filename = Qnil; | |
d5a539cd RS |
1415 | } |
1416 | ||
35692fe0 JB |
1417 | while (pos < stop) |
1418 | { | |
1419 | if (FETCH_CHAR (pos) == look) | |
1420 | { | |
60b96ee7 RS |
1421 | if (! changed) |
1422 | { | |
1423 | modify_region (current_buffer, XINT (start), stop); | |
7653d030 RS |
1424 | |
1425 | if (! NILP (noundo)) | |
1426 | { | |
1e158d25 RS |
1427 | if (MODIFF - 1 == SAVE_MODIFF) |
1428 | SAVE_MODIFF++; | |
7653d030 RS |
1429 | if (MODIFF - 1 == current_buffer->auto_save_modified) |
1430 | current_buffer->auto_save_modified++; | |
1431 | } | |
1432 | ||
1433 | changed = 1; | |
60b96ee7 RS |
1434 | } |
1435 | ||
56a98455 | 1436 | if (NILP (noundo)) |
35692fe0 JB |
1437 | record_change (pos, 1); |
1438 | FETCH_CHAR (pos) = XINT (tochar); | |
35692fe0 JB |
1439 | } |
1440 | pos++; | |
1441 | } | |
1442 | ||
60b96ee7 RS |
1443 | if (changed) |
1444 | signal_after_change (XINT (start), | |
1445 | stop - XINT (start), stop - XINT (start)); | |
1446 | ||
d5a539cd | 1447 | unbind_to (count, Qnil); |
35692fe0 JB |
1448 | return Qnil; |
1449 | } | |
1450 | ||
1451 | DEFUN ("translate-region", Ftranslate_region, Stranslate_region, 3, 3, 0, | |
1452 | "From START to END, translate characters according to TABLE.\n\ | |
1453 | TABLE is a string; the Nth character in it is the mapping\n\ | |
1454 | for the character with code N. Returns the number of characters changed.") | |
1455 | (start, end, table) | |
1456 | Lisp_Object start; | |
1457 | Lisp_Object end; | |
1458 | register Lisp_Object table; | |
1459 | { | |
1460 | register int pos, stop; /* Limits of the region. */ | |
1461 | register unsigned char *tt; /* Trans table. */ | |
1462 | register int oc; /* Old character. */ | |
1463 | register int nc; /* New character. */ | |
1464 | int cnt; /* Number of changes made. */ | |
1465 | Lisp_Object z; /* Return. */ | |
1466 | int size; /* Size of translate table. */ | |
1467 | ||
1468 | validate_region (&start, &end); | |
1469 | CHECK_STRING (table, 2); | |
1470 | ||
1471 | size = XSTRING (table)->size; | |
1472 | tt = XSTRING (table)->data; | |
1473 | ||
1474 | pos = XINT (start); | |
1475 | stop = XINT (end); | |
04a759c8 | 1476 | modify_region (current_buffer, pos, stop); |
35692fe0 JB |
1477 | |
1478 | cnt = 0; | |
1479 | for (; pos < stop; ++pos) | |
1480 | { | |
1481 | oc = FETCH_CHAR (pos); | |
1482 | if (oc < size) | |
1483 | { | |
1484 | nc = tt[oc]; | |
1485 | if (nc != oc) | |
1486 | { | |
1487 | record_change (pos, 1); | |
1488 | FETCH_CHAR (pos) = nc; | |
1489 | signal_after_change (pos, 1, 1); | |
1490 | ++cnt; | |
1491 | } | |
1492 | } | |
1493 | } | |
1494 | ||
55561c63 | 1495 | XSETFASTINT (z, cnt); |
35692fe0 JB |
1496 | return (z); |
1497 | } | |
1498 | ||
1499 | DEFUN ("delete-region", Fdelete_region, Sdelete_region, 2, 2, "r", | |
1500 | "Delete the text between point and mark.\n\ | |
1501 | When called from a program, expects two arguments,\n\ | |
1502 | positions (integers or markers) specifying the stretch to be deleted.") | |
1503 | (b, e) | |
1504 | Lisp_Object b, e; | |
1505 | { | |
1506 | validate_region (&b, &e); | |
1507 | del_range (XINT (b), XINT (e)); | |
1508 | return Qnil; | |
1509 | } | |
1510 | \f | |
1511 | DEFUN ("widen", Fwiden, Swiden, 0, 0, "", | |
1512 | "Remove restrictions (narrowing) from current buffer.\n\ | |
1513 | This allows the buffer's full text to be seen and edited.") | |
1514 | () | |
1515 | { | |
1516 | BEGV = BEG; | |
1517 | SET_BUF_ZV (current_buffer, Z); | |
18744e17 | 1518 | current_buffer->clip_changed = 1; |
52b14ac0 JB |
1519 | /* Changing the buffer bounds invalidates any recorded current column. */ |
1520 | invalidate_current_column (); | |
35692fe0 JB |
1521 | return Qnil; |
1522 | } | |
1523 | ||
1524 | DEFUN ("narrow-to-region", Fnarrow_to_region, Snarrow_to_region, 2, 2, "r", | |
1525 | "Restrict editing in this buffer to the current region.\n\ | |
1526 | The rest of the text becomes temporarily invisible and untouchable\n\ | |
1527 | but is not deleted; if you save the buffer in a file, the invisible\n\ | |
1528 | text is included in the file. \\[widen] makes all visible again.\n\ | |
1529 | See also `save-restriction'.\n\ | |
1530 | \n\ | |
1531 | When calling from a program, pass two arguments; positions (integers\n\ | |
1532 | or markers) bounding the text that should remain visible.") | |
1533 | (b, e) | |
1534 | register Lisp_Object b, e; | |
1535 | { | |
35692fe0 JB |
1536 | CHECK_NUMBER_COERCE_MARKER (b, 0); |
1537 | CHECK_NUMBER_COERCE_MARKER (e, 1); | |
1538 | ||
1539 | if (XINT (b) > XINT (e)) | |
1540 | { | |
b5a6948e KH |
1541 | Lisp_Object tem; |
1542 | tem = b; b = e; e = tem; | |
35692fe0 JB |
1543 | } |
1544 | ||
1545 | if (!(BEG <= XINT (b) && XINT (b) <= XINT (e) && XINT (e) <= Z)) | |
1546 | args_out_of_range (b, e); | |
1547 | ||
1548 | BEGV = XFASTINT (b); | |
1549 | SET_BUF_ZV (current_buffer, XFASTINT (e)); | |
1550 | if (point < XFASTINT (b)) | |
1551 | SET_PT (XFASTINT (b)); | |
1552 | if (point > XFASTINT (e)) | |
1553 | SET_PT (XFASTINT (e)); | |
18744e17 | 1554 | current_buffer->clip_changed = 1; |
52b14ac0 JB |
1555 | /* Changing the buffer bounds invalidates any recorded current column. */ |
1556 | invalidate_current_column (); | |
35692fe0 JB |
1557 | return Qnil; |
1558 | } | |
1559 | ||
1560 | Lisp_Object | |
1561 | save_restriction_save () | |
1562 | { | |
1563 | register Lisp_Object bottom, top; | |
1564 | /* Note: I tried using markers here, but it does not win | |
1565 | because insertion at the end of the saved region | |
1566 | does not advance mh and is considered "outside" the saved region. */ | |
55561c63 KH |
1567 | XSETFASTINT (bottom, BEGV - BEG); |
1568 | XSETFASTINT (top, Z - ZV); | |
35692fe0 JB |
1569 | |
1570 | return Fcons (Fcurrent_buffer (), Fcons (bottom, top)); | |
1571 | } | |
1572 | ||
1573 | Lisp_Object | |
1574 | save_restriction_restore (data) | |
1575 | Lisp_Object data; | |
1576 | { | |
1577 | register struct buffer *buf; | |
1578 | register int newhead, newtail; | |
1579 | register Lisp_Object tem; | |
1580 | ||
1581 | buf = XBUFFER (XCONS (data)->car); | |
1582 | ||
1583 | data = XCONS (data)->cdr; | |
1584 | ||
1585 | tem = XCONS (data)->car; | |
1586 | newhead = XINT (tem); | |
1587 | tem = XCONS (data)->cdr; | |
1588 | newtail = XINT (tem); | |
1589 | if (newhead + newtail > BUF_Z (buf) - BUF_BEG (buf)) | |
1590 | { | |
1591 | newhead = 0; | |
1592 | newtail = 0; | |
1593 | } | |
1594 | BUF_BEGV (buf) = BUF_BEG (buf) + newhead; | |
1595 | SET_BUF_ZV (buf, BUF_Z (buf) - newtail); | |
18744e17 | 1596 | current_buffer->clip_changed = 1; |
35692fe0 JB |
1597 | |
1598 | /* If point is outside the new visible range, move it inside. */ | |
1599 | SET_BUF_PT (buf, | |
1600 | clip_to_bounds (BUF_BEGV (buf), BUF_PT (buf), BUF_ZV (buf))); | |
1601 | ||
1602 | return Qnil; | |
1603 | } | |
1604 | ||
1605 | DEFUN ("save-restriction", Fsave_restriction, Ssave_restriction, 0, UNEVALLED, 0, | |
1606 | "Execute BODY, saving and restoring current buffer's restrictions.\n\ | |
1607 | The buffer's restrictions make parts of the beginning and end invisible.\n\ | |
1608 | \(They are set up with `narrow-to-region' and eliminated with `widen'.)\n\ | |
1609 | This special form, `save-restriction', saves the current buffer's restrictions\n\ | |
1610 | when it is entered, and restores them when it is exited.\n\ | |
1611 | So any `narrow-to-region' within BODY lasts only until the end of the form.\n\ | |
1612 | The old restrictions settings are restored\n\ | |
1613 | even in case of abnormal exit (throw or error).\n\ | |
1614 | \n\ | |
1615 | The value returned is the value of the last form in BODY.\n\ | |
1616 | \n\ | |
1617 | `save-restriction' can get confused if, within the BODY, you widen\n\ | |
1618 | and then make changes outside the area within the saved restrictions.\n\ | |
1619 | \n\ | |
1620 | Note: if you are using both `save-excursion' and `save-restriction',\n\ | |
1621 | use `save-excursion' outermost:\n\ | |
1622 | (save-excursion (save-restriction ...))") | |
1623 | (body) | |
1624 | Lisp_Object body; | |
1625 | { | |
1626 | register Lisp_Object val; | |
1627 | int count = specpdl_ptr - specpdl; | |
1628 | ||
1629 | record_unwind_protect (save_restriction_restore, save_restriction_save ()); | |
1630 | val = Fprogn (body); | |
1631 | return unbind_to (count, val); | |
1632 | } | |
1633 | \f | |
671fbc4d KH |
1634 | /* Buffer for the most recent text displayed by Fmessage. */ |
1635 | static char *message_text; | |
1636 | ||
1637 | /* Allocated length of that buffer. */ | |
1638 | static int message_length; | |
1639 | ||
35692fe0 JB |
1640 | DEFUN ("message", Fmessage, Smessage, 1, MANY, 0, |
1641 | "Print a one-line message at the bottom of the screen.\n\ | |
98fc5c3c RS |
1642 | The first argument is a format control string, and the rest are data\n\ |
1643 | to be formatted under control of the string. See `format' for details.\n\ | |
1644 | \n\ | |
ccdac5be JB |
1645 | If the first argument is nil, clear any existing message; let the\n\ |
1646 | minibuffer contents show.") | |
35692fe0 JB |
1647 | (nargs, args) |
1648 | int nargs; | |
1649 | Lisp_Object *args; | |
1650 | { | |
ccdac5be | 1651 | if (NILP (args[0])) |
f0250249 JB |
1652 | { |
1653 | message (0); | |
1654 | return Qnil; | |
1655 | } | |
ccdac5be JB |
1656 | else |
1657 | { | |
1658 | register Lisp_Object val; | |
1659 | val = Fformat (nargs, args); | |
671fbc4d KH |
1660 | /* Copy the data so that it won't move when we GC. */ |
1661 | if (! message_text) | |
1662 | { | |
1663 | message_text = (char *)xmalloc (80); | |
1664 | message_length = 80; | |
1665 | } | |
1666 | if (XSTRING (val)->size > message_length) | |
1667 | { | |
1668 | message_length = XSTRING (val)->size; | |
1669 | message_text = (char *)xrealloc (message_text, message_length); | |
1670 | } | |
1671 | bcopy (XSTRING (val)->data, message_text, XSTRING (val)->size); | |
1672 | message2 (message_text, XSTRING (val)->size); | |
ccdac5be JB |
1673 | return val; |
1674 | } | |
35692fe0 JB |
1675 | } |
1676 | ||
cacc3e2c RS |
1677 | DEFUN ("message-box", Fmessage_box, Smessage_box, 1, MANY, 0, |
1678 | "Display a message, in a dialog box if possible.\n\ | |
1679 | If a dialog box is not available, use the echo area.\n\ | |
1680 | The first argument is a control string.\n\ | |
1681 | It may contain %s or %d or %c to print successive following arguments.\n\ | |
1682 | %s means print an argument as a string, %d means print as number in decimal,\n\ | |
1683 | %c means print a number as a single character.\n\ | |
1684 | The argument used by %s must be a string or a symbol;\n\ | |
1685 | the argument used by %d or %c must be a number.\n\ | |
1686 | If the first argument is nil, clear any existing message; let the\n\ | |
1687 | minibuffer contents show.") | |
1688 | (nargs, args) | |
1689 | int nargs; | |
1690 | Lisp_Object *args; | |
1691 | { | |
1692 | if (NILP (args[0])) | |
1693 | { | |
1694 | message (0); | |
1695 | return Qnil; | |
1696 | } | |
1697 | else | |
1698 | { | |
1699 | register Lisp_Object val; | |
1700 | val = Fformat (nargs, args); | |
1701 | #ifdef HAVE_X_MENU | |
1702 | { | |
1703 | Lisp_Object pane, menu, obj; | |
1704 | struct gcpro gcpro1; | |
1705 | pane = Fcons (Fcons (build_string ("OK"), Qt), Qnil); | |
1706 | GCPRO1 (pane); | |
1707 | menu = Fcons (val, pane); | |
1708 | obj = Fx_popup_dialog (Qt, menu); | |
1709 | UNGCPRO; | |
1710 | return val; | |
1711 | } | |
1712 | #else | |
1713 | /* Copy the data so that it won't move when we GC. */ | |
1714 | if (! message_text) | |
1715 | { | |
1716 | message_text = (char *)xmalloc (80); | |
1717 | message_length = 80; | |
1718 | } | |
1719 | if (XSTRING (val)->size > message_length) | |
1720 | { | |
1721 | message_length = XSTRING (val)->size; | |
1722 | message_text = (char *)xrealloc (message_text, message_length); | |
1723 | } | |
1724 | bcopy (XSTRING (val)->data, message_text, XSTRING (val)->size); | |
1725 | message2 (message_text, XSTRING (val)->size); | |
1726 | return val; | |
1727 | #endif | |
1728 | } | |
1729 | } | |
1730 | #ifdef HAVE_X_MENU | |
1731 | extern Lisp_Object last_nonmenu_event; | |
1732 | #endif | |
1733 | DEFUN ("message-or-box", Fmessage_or_box, Smessage_or_box, 1, MANY, 0, | |
1734 | "Display a message in a dialog box or in the echo area.\n\ | |
1735 | If this command was invoked with the mouse, use a dialog box.\n\ | |
1736 | Otherwise, use the echo area.\n\ | |
1737 | \n\ | |
1738 | The first argument is a control string.\n\ | |
1739 | It may contain %s or %d or %c to print successive following arguments.\n\ | |
1740 | %s means print an argument as a string, %d means print as number in decimal,\n\ | |
1741 | %c means print a number as a single character.\n\ | |
1742 | The argument used by %s must be a string or a symbol;\n\ | |
1743 | the argument used by %d or %c must be a number.\n\ | |
1744 | If the first argument is nil, clear any existing message; let the\n\ | |
1745 | minibuffer contents show.") | |
1746 | (nargs, args) | |
1747 | int nargs; | |
1748 | Lisp_Object *args; | |
1749 | { | |
1750 | #ifdef HAVE_X_MENU | |
1751 | if (NILP (last_nonmenu_event) || CONSP (last_nonmenu_event)) | |
0a56ee6b | 1752 | return Fmessage_box (nargs, args); |
cacc3e2c RS |
1753 | #endif |
1754 | return Fmessage (nargs, args); | |
1755 | } | |
1756 | ||
35692fe0 JB |
1757 | DEFUN ("format", Fformat, Sformat, 1, MANY, 0, |
1758 | "Format a string out of a control-string and arguments.\n\ | |
1759 | The first argument is a control string.\n\ | |
1760 | The other arguments are substituted into it to make the result, a string.\n\ | |
1761 | It may contain %-sequences meaning to substitute the next argument.\n\ | |
1762 | %s means print a string argument. Actually, prints any object, with `princ'.\n\ | |
1763 | %d means print as number in decimal (%o octal, %x hex).\n\ | |
9db1775a RS |
1764 | %e means print a number in exponential notation.\n\ |
1765 | %f means print a number in decimal-point notation.\n\ | |
1766 | %g means print a number in exponential notation\n\ | |
1767 | or decimal-point notation, whichever uses fewer characters.\n\ | |
35692fe0 JB |
1768 | %c means print a number as a single character.\n\ |
1769 | %S means print any object as an s-expression (using prin1).\n\ | |
9db1775a | 1770 | The argument used for %d, %o, %x, %e, %f, %g or %c must be a number.\n\ |
52b14ac0 | 1771 | Use %% to put a single % into the output.") |
35692fe0 JB |
1772 | (nargs, args) |
1773 | int nargs; | |
1774 | register Lisp_Object *args; | |
1775 | { | |
1776 | register int n; /* The number of the next arg to substitute */ | |
1777 | register int total = 5; /* An estimate of the final length */ | |
1778 | char *buf; | |
1779 | register unsigned char *format, *end; | |
1780 | int length; | |
1781 | extern char *index (); | |
1782 | /* It should not be necessary to GCPRO ARGS, because | |
1783 | the caller in the interpreter should take care of that. */ | |
1784 | ||
1785 | CHECK_STRING (args[0], 0); | |
1786 | format = XSTRING (args[0])->data; | |
1787 | end = format + XSTRING (args[0])->size; | |
1788 | ||
1789 | n = 0; | |
1790 | while (format != end) | |
1791 | if (*format++ == '%') | |
1792 | { | |
1793 | int minlen; | |
1794 | ||
1795 | /* Process a numeric arg and skip it. */ | |
1796 | minlen = atoi (format); | |
537dfb13 RS |
1797 | if (minlen < 0) |
1798 | minlen = - minlen; | |
1799 | ||
35692fe0 JB |
1800 | while ((*format >= '0' && *format <= '9') |
1801 | || *format == '-' || *format == ' ' || *format == '.') | |
1802 | format++; | |
1803 | ||
1804 | if (*format == '%') | |
1805 | format++; | |
1806 | else if (++n >= nargs) | |
537dfb13 | 1807 | error ("Not enough arguments for format string"); |
35692fe0 JB |
1808 | else if (*format == 'S') |
1809 | { | |
1810 | /* For `S', prin1 the argument and then treat like a string. */ | |
1811 | register Lisp_Object tem; | |
1812 | tem = Fprin1_to_string (args[n], Qnil); | |
1813 | args[n] = tem; | |
1814 | goto string; | |
1815 | } | |
ae683129 | 1816 | else if (SYMBOLP (args[n])) |
35692fe0 | 1817 | { |
d2fd0445 | 1818 | XSETSTRING (args[n], XSYMBOL (args[n])->name); |
35692fe0 JB |
1819 | goto string; |
1820 | } | |
ae683129 | 1821 | else if (STRINGP (args[n])) |
35692fe0 JB |
1822 | { |
1823 | string: | |
b22e7ecc KH |
1824 | if (*format != 's' && *format != 'S') |
1825 | error ("format specifier doesn't match argument type"); | |
35692fe0 | 1826 | total += XSTRING (args[n])->size; |
537dfb13 RS |
1827 | /* We have to put an arbitrary limit on minlen |
1828 | since otherwise it could make alloca fail. */ | |
1829 | if (minlen < XSTRING (args[n])->size + 1000) | |
1830 | total += minlen; | |
35692fe0 JB |
1831 | } |
1832 | /* Would get MPV otherwise, since Lisp_Int's `point' to low memory. */ | |
ae683129 | 1833 | else if (INTEGERP (args[n]) && *format != 's') |
35692fe0 | 1834 | { |
4746118a | 1835 | #ifdef LISP_FLOAT_TYPE |
eb8c3be9 | 1836 | /* The following loop assumes the Lisp type indicates |
35692fe0 JB |
1837 | the proper way to pass the argument. |
1838 | So make sure we have a flonum if the argument should | |
1839 | be a double. */ | |
1840 | if (*format == 'e' || *format == 'f' || *format == 'g') | |
1841 | args[n] = Ffloat (args[n]); | |
4746118a | 1842 | #endif |
d65666d5 | 1843 | total += 30; |
537dfb13 RS |
1844 | /* We have to put an arbitrary limit on minlen |
1845 | since otherwise it could make alloca fail. */ | |
1846 | if (minlen < 1000) | |
1847 | total += minlen; | |
35692fe0 | 1848 | } |
4746118a | 1849 | #ifdef LISP_FLOAT_TYPE |
ae683129 | 1850 | else if (FLOATP (args[n]) && *format != 's') |
35692fe0 JB |
1851 | { |
1852 | if (! (*format == 'e' || *format == 'f' || *format == 'g')) | |
1853 | args[n] = Ftruncate (args[n]); | |
d65666d5 | 1854 | total += 30; |
537dfb13 RS |
1855 | /* We have to put an arbitrary limit on minlen |
1856 | since otherwise it could make alloca fail. */ | |
1857 | if (minlen < 1000) | |
1858 | total += minlen; | |
35692fe0 | 1859 | } |
4746118a | 1860 | #endif |
35692fe0 JB |
1861 | else |
1862 | { | |
1863 | /* Anything but a string, convert to a string using princ. */ | |
1864 | register Lisp_Object tem; | |
1865 | tem = Fprin1_to_string (args[n], Qt); | |
1866 | args[n] = tem; | |
1867 | goto string; | |
1868 | } | |
1869 | } | |
1870 | ||
1871 | { | |
1872 | register int nstrings = n + 1; | |
50aa2f90 JB |
1873 | |
1874 | /* Allocate twice as many strings as we have %-escapes; floats occupy | |
1875 | two slots, and we're not sure how many of those we have. */ | |
35692fe0 | 1876 | register unsigned char **strings |
50aa2f90 JB |
1877 | = (unsigned char **) alloca (2 * nstrings * sizeof (unsigned char *)); |
1878 | int i; | |
35692fe0 | 1879 | |
50aa2f90 | 1880 | i = 0; |
35692fe0 JB |
1881 | for (n = 0; n < nstrings; n++) |
1882 | { | |
1883 | if (n >= nargs) | |
50aa2f90 | 1884 | strings[i++] = (unsigned char *) ""; |
ae683129 | 1885 | else if (INTEGERP (args[n])) |
35692fe0 JB |
1886 | /* We checked above that the corresponding format effector |
1887 | isn't %s, which would cause MPV. */ | |
50aa2f90 | 1888 | strings[i++] = (unsigned char *) XINT (args[n]); |
4746118a | 1889 | #ifdef LISP_FLOAT_TYPE |
ae683129 | 1890 | else if (FLOATP (args[n])) |
35692fe0 | 1891 | { |
86246708 | 1892 | union { double d; char *half[2]; } u; |
35692fe0 JB |
1893 | |
1894 | u.d = XFLOAT (args[n])->data; | |
86246708 KH |
1895 | strings[i++] = (unsigned char *) u.half[0]; |
1896 | strings[i++] = (unsigned char *) u.half[1]; | |
35692fe0 | 1897 | } |
4746118a | 1898 | #endif |
102cfe92 RS |
1899 | else if (i == 0) |
1900 | /* The first string is treated differently | |
1901 | because it is the format string. */ | |
50aa2f90 | 1902 | strings[i++] = XSTRING (args[n])->data; |
102cfe92 RS |
1903 | else |
1904 | strings[i++] = (unsigned char *) XFASTINT (args[n]); | |
35692fe0 JB |
1905 | } |
1906 | ||
fb893977 RS |
1907 | /* Make room in result for all the non-%-codes in the control string. */ |
1908 | total += XSTRING (args[0])->size; | |
1909 | ||
35692fe0 JB |
1910 | /* Format it in bigger and bigger buf's until it all fits. */ |
1911 | while (1) | |
1912 | { | |
1913 | buf = (char *) alloca (total + 1); | |
1914 | buf[total - 1] = 0; | |
1915 | ||
102cfe92 RS |
1916 | length = doprnt_lisp (buf, total + 1, strings[0], |
1917 | end, i-1, strings + 1); | |
35692fe0 JB |
1918 | if (buf[total - 1] == 0) |
1919 | break; | |
1920 | ||
1921 | total *= 2; | |
1922 | } | |
1923 | } | |
1924 | ||
1925 | /* UNGCPRO; */ | |
1926 | return make_string (buf, length); | |
1927 | } | |
1928 | ||
1929 | /* VARARGS 1 */ | |
1930 | Lisp_Object | |
1931 | #ifdef NO_ARG_ARRAY | |
1932 | format1 (string1, arg0, arg1, arg2, arg3, arg4) | |
679e18b1 | 1933 | EMACS_INT arg0, arg1, arg2, arg3, arg4; |
35692fe0 JB |
1934 | #else |
1935 | format1 (string1) | |
1936 | #endif | |
1937 | char *string1; | |
1938 | { | |
1939 | char buf[100]; | |
1940 | #ifdef NO_ARG_ARRAY | |
679e18b1 | 1941 | EMACS_INT args[5]; |
35692fe0 JB |
1942 | args[0] = arg0; |
1943 | args[1] = arg1; | |
1944 | args[2] = arg2; | |
1945 | args[3] = arg3; | |
1946 | args[4] = arg4; | |
ea4d2909 | 1947 | doprnt (buf, sizeof buf, string1, (char *)0, 5, args); |
35692fe0 | 1948 | #else |
ea4d2909 | 1949 | doprnt (buf, sizeof buf, string1, (char *)0, 5, &string1 + 1); |
35692fe0 JB |
1950 | #endif |
1951 | return build_string (buf); | |
1952 | } | |
1953 | \f | |
1954 | DEFUN ("char-equal", Fchar_equal, Schar_equal, 2, 2, 0, | |
1955 | "Return t if two characters match, optionally ignoring case.\n\ | |
1956 | Both arguments must be characters (i.e. integers).\n\ | |
1957 | Case is ignored if `case-fold-search' is non-nil in the current buffer.") | |
1958 | (c1, c2) | |
1959 | register Lisp_Object c1, c2; | |
1960 | { | |
be46733f | 1961 | Lisp_Object *downcase = DOWNCASE_TABLE; |
35692fe0 JB |
1962 | CHECK_NUMBER (c1, 0); |
1963 | CHECK_NUMBER (c2, 1); | |
1964 | ||
56a98455 | 1965 | if (!NILP (current_buffer->case_fold_search) |
be46733f RS |
1966 | ? ((XINT (downcase[0xff & XFASTINT (c1)]) |
1967 | == XINT (downcase[0xff & XFASTINT (c2)])) | |
c34beca9 | 1968 | && (XFASTINT (c1) & ~0xff) == (XFASTINT (c2) & ~0xff)) |
35692fe0 JB |
1969 | : XINT (c1) == XINT (c2)) |
1970 | return Qt; | |
1971 | return Qnil; | |
1972 | } | |
b229b8d1 RS |
1973 | \f |
1974 | /* Transpose the markers in two regions of the current buffer, and | |
1975 | adjust the ones between them if necessary (i.e.: if the regions | |
1976 | differ in size). | |
1977 | ||
1978 | Traverses the entire marker list of the buffer to do so, adding an | |
1979 | appropriate amount to some, subtracting from some, and leaving the | |
1980 | rest untouched. Most of this is copied from adjust_markers in insdel.c. | |
1981 | ||
03240d11 | 1982 | It's the caller's job to see that (start1 <= end1 <= start2 <= end2). */ |
b229b8d1 RS |
1983 | |
1984 | void | |
1985 | transpose_markers (start1, end1, start2, end2) | |
1986 | register int start1, end1, start2, end2; | |
1987 | { | |
1988 | register int amt1, amt2, diff, mpos; | |
1989 | register Lisp_Object marker; | |
b229b8d1 | 1990 | |
03240d11 | 1991 | /* Update point as if it were a marker. */ |
8de1d5f0 KH |
1992 | if (PT < start1) |
1993 | ; | |
1994 | else if (PT < end1) | |
1995 | TEMP_SET_PT (PT + (end2 - end1)); | |
1996 | else if (PT < start2) | |
1997 | TEMP_SET_PT (PT + (end2 - start2) - (end1 - start1)); | |
1998 | else if (PT < end2) | |
1999 | TEMP_SET_PT (PT - (start2 - start1)); | |
2000 | ||
03240d11 KH |
2001 | /* We used to adjust the endpoints here to account for the gap, but that |
2002 | isn't good enough. Even if we assume the caller has tried to move the | |
2003 | gap out of our way, it might still be at start1 exactly, for example; | |
2004 | and that places it `inside' the interval, for our purposes. The amount | |
2005 | of adjustment is nontrivial if there's a `denormalized' marker whose | |
2006 | position is between GPT and GPT + GAP_SIZE, so it's simpler to leave | |
2007 | the dirty work to Fmarker_position, below. */ | |
b229b8d1 RS |
2008 | |
2009 | /* The difference between the region's lengths */ | |
2010 | diff = (end2 - start2) - (end1 - start1); | |
2011 | ||
2012 | /* For shifting each marker in a region by the length of the other | |
2013 | * region plus the distance between the regions. | |
2014 | */ | |
2015 | amt1 = (end2 - start2) + (start2 - end1); | |
2016 | amt2 = (end1 - start1) + (start2 - end1); | |
2017 | ||
1e158d25 | 2018 | for (marker = BUF_MARKERS (current_buffer); !NILP (marker); |
03240d11 | 2019 | marker = XMARKER (marker)->chain) |
b229b8d1 | 2020 | { |
03240d11 KH |
2021 | mpos = Fmarker_position (marker); |
2022 | if (mpos >= start1 && mpos < end2) | |
2023 | { | |
2024 | if (mpos < end1) | |
2025 | mpos += amt1; | |
2026 | else if (mpos < start2) | |
2027 | mpos += diff; | |
2028 | else | |
2029 | mpos -= amt2; | |
2030 | if (mpos > GPT) mpos += GAP_SIZE; | |
2031 | XMARKER (marker)->bufpos = mpos; | |
2032 | } | |
b229b8d1 RS |
2033 | } |
2034 | } | |
2035 | ||
2036 | DEFUN ("transpose-regions", Ftranspose_regions, Stranspose_regions, 4, 5, 0, | |
2037 | "Transpose region START1 to END1 with START2 to END2.\n\ | |
2038 | The regions may not be overlapping, because the size of the buffer is\n\ | |
2039 | never changed in a transposition.\n\ | |
2040 | \n\ | |
2041 | Optional fifth arg LEAVE_MARKERS, if non-nil, means don't transpose\n\ | |
2042 | any markers that happen to be located in the regions.\n\ | |
2043 | \n\ | |
2044 | Transposing beyond buffer boundaries is an error.") | |
2045 | (startr1, endr1, startr2, endr2, leave_markers) | |
2046 | Lisp_Object startr1, endr1, startr2, endr2, leave_markers; | |
2047 | { | |
2048 | register int start1, end1, start2, end2, | |
2049 | gap, len1, len_mid, len2; | |
3c6bc7d0 | 2050 | unsigned char *start1_addr, *start2_addr, *temp; |
b229b8d1 RS |
2051 | |
2052 | #ifdef USE_TEXT_PROPERTIES | |
2053 | INTERVAL cur_intv, tmp_interval1, tmp_interval_mid, tmp_interval2; | |
1e158d25 | 2054 | cur_intv = BUF_INTERVALS (current_buffer); |
b229b8d1 RS |
2055 | #endif /* USE_TEXT_PROPERTIES */ |
2056 | ||
2057 | validate_region (&startr1, &endr1); | |
2058 | validate_region (&startr2, &endr2); | |
2059 | ||
2060 | start1 = XFASTINT (startr1); | |
2061 | end1 = XFASTINT (endr1); | |
2062 | start2 = XFASTINT (startr2); | |
2063 | end2 = XFASTINT (endr2); | |
2064 | gap = GPT; | |
2065 | ||
2066 | /* Swap the regions if they're reversed. */ | |
2067 | if (start2 < end1) | |
2068 | { | |
2069 | register int glumph = start1; | |
2070 | start1 = start2; | |
2071 | start2 = glumph; | |
2072 | glumph = end1; | |
2073 | end1 = end2; | |
2074 | end2 = glumph; | |
2075 | } | |
2076 | ||
b229b8d1 RS |
2077 | len1 = end1 - start1; |
2078 | len2 = end2 - start2; | |
2079 | ||
2080 | if (start2 < end1) | |
2081 | error ("transposed regions not properly ordered"); | |
2082 | else if (start1 == end1 || start2 == end2) | |
2083 | error ("transposed region may not be of length 0"); | |
2084 | ||
2085 | /* The possibilities are: | |
2086 | 1. Adjacent (contiguous) regions, or separate but equal regions | |
2087 | (no, really equal, in this case!), or | |
2088 | 2. Separate regions of unequal size. | |
2089 | ||
2090 | The worst case is usually No. 2. It means that (aside from | |
2091 | potential need for getting the gap out of the way), there also | |
2092 | needs to be a shifting of the text between the two regions. So | |
2093 | if they are spread far apart, we are that much slower... sigh. */ | |
2094 | ||
2095 | /* It must be pointed out that the really studly thing to do would | |
2096 | be not to move the gap at all, but to leave it in place and work | |
2097 | around it if necessary. This would be extremely efficient, | |
2098 | especially considering that people are likely to do | |
2099 | transpositions near where they are working interactively, which | |
2100 | is exactly where the gap would be found. However, such code | |
2101 | would be much harder to write and to read. So, if you are | |
2102 | reading this comment and are feeling squirrely, by all means have | |
2103 | a go! I just didn't feel like doing it, so I will simply move | |
2104 | the gap the minimum distance to get it out of the way, and then | |
2105 | deal with an unbroken array. */ | |
3c6bc7d0 RS |
2106 | |
2107 | /* Make sure the gap won't interfere, by moving it out of the text | |
2108 | we will operate on. */ | |
2109 | if (start1 < gap && gap < end2) | |
2110 | { | |
2111 | if (gap - start1 < end2 - gap) | |
2112 | move_gap (start1); | |
2113 | else | |
2114 | move_gap (end2); | |
2115 | } | |
b229b8d1 RS |
2116 | |
2117 | /* Hmmm... how about checking to see if the gap is large | |
2118 | enough to use as the temporary storage? That would avoid an | |
2119 | allocation... interesting. Later, don't fool with it now. */ | |
2120 | ||
2121 | /* Working without memmove, for portability (sigh), so must be | |
2122 | careful of overlapping subsections of the array... */ | |
2123 | ||
2124 | if (end1 == start2) /* adjacent regions */ | |
2125 | { | |
b229b8d1 RS |
2126 | modify_region (current_buffer, start1, end2); |
2127 | record_change (start1, len1 + len2); | |
2128 | ||
2129 | #ifdef USE_TEXT_PROPERTIES | |
2130 | tmp_interval1 = copy_intervals (cur_intv, start1, len1); | |
2131 | tmp_interval2 = copy_intervals (cur_intv, start2, len2); | |
2132 | Fset_text_properties (start1, end2, Qnil, Qnil); | |
2133 | #endif /* USE_TEXT_PROPERTIES */ | |
2134 | ||
2135 | /* First region smaller than second. */ | |
2136 | if (len1 < len2) | |
2137 | { | |
3c6bc7d0 RS |
2138 | /* We use alloca only if it is small, |
2139 | because we want to avoid stack overflow. */ | |
2140 | if (len2 > 20000) | |
2141 | temp = (unsigned char *) xmalloc (len2); | |
2142 | else | |
2143 | temp = (unsigned char *) alloca (len2); | |
03240d11 KH |
2144 | |
2145 | /* Don't precompute these addresses. We have to compute them | |
2146 | at the last minute, because the relocating allocator might | |
2147 | have moved the buffer around during the xmalloc. */ | |
2148 | start1_addr = BUF_CHAR_ADDRESS (current_buffer, start1); | |
2149 | start2_addr = BUF_CHAR_ADDRESS (current_buffer, start2); | |
2150 | ||
b229b8d1 RS |
2151 | bcopy (start2_addr, temp, len2); |
2152 | bcopy (start1_addr, start1_addr + len2, len1); | |
2153 | bcopy (temp, start1_addr, len2); | |
3c6bc7d0 RS |
2154 | if (len2 > 20000) |
2155 | free (temp); | |
b229b8d1 RS |
2156 | } |
2157 | else | |
2158 | /* First region not smaller than second. */ | |
2159 | { | |
3c6bc7d0 RS |
2160 | if (len1 > 20000) |
2161 | temp = (unsigned char *) xmalloc (len1); | |
2162 | else | |
2163 | temp = (unsigned char *) alloca (len1); | |
03240d11 KH |
2164 | start1_addr = BUF_CHAR_ADDRESS (current_buffer, start1); |
2165 | start2_addr = BUF_CHAR_ADDRESS (current_buffer, start2); | |
b229b8d1 RS |
2166 | bcopy (start1_addr, temp, len1); |
2167 | bcopy (start2_addr, start1_addr, len2); | |
2168 | bcopy (temp, start1_addr + len2, len1); | |
3c6bc7d0 RS |
2169 | if (len1 > 20000) |
2170 | free (temp); | |
b229b8d1 RS |
2171 | } |
2172 | #ifdef USE_TEXT_PROPERTIES | |
2173 | graft_intervals_into_buffer (tmp_interval1, start1 + len2, | |
2174 | len1, current_buffer, 0); | |
2175 | graft_intervals_into_buffer (tmp_interval2, start1, | |
2176 | len2, current_buffer, 0); | |
2177 | #endif /* USE_TEXT_PROPERTIES */ | |
2178 | } | |
2179 | /* Non-adjacent regions, because end1 != start2, bleagh... */ | |
2180 | else | |
2181 | { | |
b229b8d1 RS |
2182 | if (len1 == len2) |
2183 | /* Regions are same size, though, how nice. */ | |
2184 | { | |
2185 | modify_region (current_buffer, start1, end1); | |
2186 | modify_region (current_buffer, start2, end2); | |
2187 | record_change (start1, len1); | |
2188 | record_change (start2, len2); | |
2189 | #ifdef USE_TEXT_PROPERTIES | |
2190 | tmp_interval1 = copy_intervals (cur_intv, start1, len1); | |
2191 | tmp_interval2 = copy_intervals (cur_intv, start2, len2); | |
2192 | Fset_text_properties (start1, end1, Qnil, Qnil); | |
2193 | Fset_text_properties (start2, end2, Qnil, Qnil); | |
2194 | #endif /* USE_TEXT_PROPERTIES */ | |
2195 | ||
3c6bc7d0 RS |
2196 | if (len1 > 20000) |
2197 | temp = (unsigned char *) xmalloc (len1); | |
2198 | else | |
2199 | temp = (unsigned char *) alloca (len1); | |
03240d11 KH |
2200 | start1_addr = BUF_CHAR_ADDRESS (current_buffer, start1); |
2201 | start2_addr = BUF_CHAR_ADDRESS (current_buffer, start2); | |
b229b8d1 RS |
2202 | bcopy (start1_addr, temp, len1); |
2203 | bcopy (start2_addr, start1_addr, len2); | |
2204 | bcopy (temp, start2_addr, len1); | |
3c6bc7d0 RS |
2205 | if (len1 > 20000) |
2206 | free (temp); | |
b229b8d1 RS |
2207 | #ifdef USE_TEXT_PROPERTIES |
2208 | graft_intervals_into_buffer (tmp_interval1, start2, | |
2209 | len1, current_buffer, 0); | |
2210 | graft_intervals_into_buffer (tmp_interval2, start1, | |
2211 | len2, current_buffer, 0); | |
2212 | #endif /* USE_TEXT_PROPERTIES */ | |
2213 | } | |
2214 | ||
2215 | else if (len1 < len2) /* Second region larger than first */ | |
2216 | /* Non-adjacent & unequal size, area between must also be shifted. */ | |
2217 | { | |
2218 | len_mid = start2 - end1; | |
2219 | modify_region (current_buffer, start1, end2); | |
2220 | record_change (start1, (end2 - start1)); | |
2221 | #ifdef USE_TEXT_PROPERTIES | |
2222 | tmp_interval1 = copy_intervals (cur_intv, start1, len1); | |
2223 | tmp_interval_mid = copy_intervals (cur_intv, end1, len_mid); | |
2224 | tmp_interval2 = copy_intervals (cur_intv, start2, len2); | |
2225 | Fset_text_properties (start1, end2, Qnil, Qnil); | |
2226 | #endif /* USE_TEXT_PROPERTIES */ | |
2227 | ||
3c6bc7d0 RS |
2228 | /* holds region 2 */ |
2229 | if (len2 > 20000) | |
2230 | temp = (unsigned char *) xmalloc (len2); | |
2231 | else | |
2232 | temp = (unsigned char *) alloca (len2); | |
03240d11 KH |
2233 | start1_addr = BUF_CHAR_ADDRESS (current_buffer, start1); |
2234 | start2_addr = BUF_CHAR_ADDRESS (current_buffer, start2); | |
3c6bc7d0 | 2235 | bcopy (start2_addr, temp, len2); |
b229b8d1 | 2236 | bcopy (start1_addr, start1_addr + len_mid + len2, len1); |
3c6bc7d0 RS |
2237 | safe_bcopy (start1_addr + len1, start1_addr + len2, len_mid); |
2238 | bcopy (temp, start1_addr, len2); | |
2239 | if (len2 > 20000) | |
2240 | free (temp); | |
b229b8d1 RS |
2241 | #ifdef USE_TEXT_PROPERTIES |
2242 | graft_intervals_into_buffer (tmp_interval1, end2 - len1, | |
2243 | len1, current_buffer, 0); | |
2244 | graft_intervals_into_buffer (tmp_interval_mid, start1 + len2, | |
2245 | len_mid, current_buffer, 0); | |
2246 | graft_intervals_into_buffer (tmp_interval2, start1, | |
2247 | len2, current_buffer, 0); | |
2248 | #endif /* USE_TEXT_PROPERTIES */ | |
2249 | } | |
2250 | else | |
2251 | /* Second region smaller than first. */ | |
2252 | { | |
2253 | len_mid = start2 - end1; | |
2254 | record_change (start1, (end2 - start1)); | |
2255 | modify_region (current_buffer, start1, end2); | |
2256 | ||
2257 | #ifdef USE_TEXT_PROPERTIES | |
2258 | tmp_interval1 = copy_intervals (cur_intv, start1, len1); | |
2259 | tmp_interval_mid = copy_intervals (cur_intv, end1, len_mid); | |
2260 | tmp_interval2 = copy_intervals (cur_intv, start2, len2); | |
2261 | Fset_text_properties (start1, end2, Qnil, Qnil); | |
2262 | #endif /* USE_TEXT_PROPERTIES */ | |
2263 | ||
3c6bc7d0 RS |
2264 | /* holds region 1 */ |
2265 | if (len1 > 20000) | |
2266 | temp = (unsigned char *) xmalloc (len1); | |
2267 | else | |
2268 | temp = (unsigned char *) alloca (len1); | |
03240d11 KH |
2269 | start1_addr = BUF_CHAR_ADDRESS (current_buffer, start1); |
2270 | start2_addr = BUF_CHAR_ADDRESS (current_buffer, start2); | |
3c6bc7d0 | 2271 | bcopy (start1_addr, temp, len1); |
b229b8d1 | 2272 | bcopy (start2_addr, start1_addr, len2); |
3c6bc7d0 RS |
2273 | bcopy (start1_addr + len1, start1_addr + len2, len_mid); |
2274 | bcopy (temp, start1_addr + len2 + len_mid, len1); | |
2275 | if (len1 > 20000) | |
2276 | free (temp); | |
b229b8d1 RS |
2277 | #ifdef USE_TEXT_PROPERTIES |
2278 | graft_intervals_into_buffer (tmp_interval1, end2 - len1, | |
2279 | len1, current_buffer, 0); | |
2280 | graft_intervals_into_buffer (tmp_interval_mid, start1 + len2, | |
2281 | len_mid, current_buffer, 0); | |
2282 | graft_intervals_into_buffer (tmp_interval2, start1, | |
2283 | len2, current_buffer, 0); | |
2284 | #endif /* USE_TEXT_PROPERTIES */ | |
2285 | } | |
2286 | } | |
2287 | ||
2288 | /* todo: this will be slow, because for every transposition, we | |
2289 | traverse the whole friggin marker list. Possible solutions: | |
2290 | somehow get a list of *all* the markers across multiple | |
2291 | transpositions and do it all in one swell phoop. Or maybe modify | |
2292 | Emacs' marker code to keep an ordered list or tree. This might | |
2293 | be nicer, and more beneficial in the long run, but would be a | |
2294 | bunch of work. Plus the way they're arranged now is nice. */ | |
2295 | if (NILP (leave_markers)) | |
8de1d5f0 KH |
2296 | { |
2297 | transpose_markers (start1, end1, start2, end2); | |
2298 | fix_overlays_in_range (start1, end2); | |
2299 | } | |
b229b8d1 RS |
2300 | |
2301 | return Qnil; | |
2302 | } | |
35692fe0 | 2303 | |
35692fe0 JB |
2304 | \f |
2305 | void | |
2306 | syms_of_editfns () | |
2307 | { | |
f43754f6 KH |
2308 | DEFVAR_LISP ("system-name", &Vsystem_name, |
2309 | "The name of the machine Emacs is running on."); | |
2310 | ||
2311 | DEFVAR_LISP ("user-full-name", &Vuser_full_name, | |
2312 | "The full name of the user logged in."); | |
2313 | ||
35b34f72 | 2314 | DEFVAR_LISP ("user-login-name", &Vuser_login_name, |
f43754f6 KH |
2315 | "The user's name, taken from environment variables if possible."); |
2316 | ||
35b34f72 | 2317 | DEFVAR_LISP ("user-real-login-name", &Vuser_real_login_name, |
f43754f6 | 2318 | "The user's name, based upon the real uid only."); |
35692fe0 JB |
2319 | |
2320 | defsubr (&Schar_equal); | |
2321 | defsubr (&Sgoto_char); | |
2322 | defsubr (&Sstring_to_char); | |
2323 | defsubr (&Schar_to_string); | |
2324 | defsubr (&Sbuffer_substring); | |
2325 | defsubr (&Sbuffer_string); | |
2326 | ||
2327 | defsubr (&Spoint_marker); | |
2328 | defsubr (&Smark_marker); | |
2329 | defsubr (&Spoint); | |
2330 | defsubr (&Sregion_beginning); | |
2331 | defsubr (&Sregion_end); | |
2332 | /* defsubr (&Smark); */ | |
2333 | /* defsubr (&Sset_mark); */ | |
2334 | defsubr (&Ssave_excursion); | |
2335 | ||
2336 | defsubr (&Sbufsize); | |
2337 | defsubr (&Spoint_max); | |
2338 | defsubr (&Spoint_min); | |
2339 | defsubr (&Spoint_min_marker); | |
2340 | defsubr (&Spoint_max_marker); | |
2341 | ||
2342 | defsubr (&Sbobp); | |
2343 | defsubr (&Seobp); | |
2344 | defsubr (&Sbolp); | |
2345 | defsubr (&Seolp); | |
850a8179 JB |
2346 | defsubr (&Sfollowing_char); |
2347 | defsubr (&Sprevious_char); | |
35692fe0 JB |
2348 | defsubr (&Schar_after); |
2349 | defsubr (&Sinsert); | |
2350 | defsubr (&Sinsert_before_markers); | |
be91036a RS |
2351 | defsubr (&Sinsert_and_inherit); |
2352 | defsubr (&Sinsert_and_inherit_before_markers); | |
35692fe0 JB |
2353 | defsubr (&Sinsert_char); |
2354 | ||
2355 | defsubr (&Suser_login_name); | |
2356 | defsubr (&Suser_real_login_name); | |
2357 | defsubr (&Suser_uid); | |
2358 | defsubr (&Suser_real_uid); | |
2359 | defsubr (&Suser_full_name); | |
7fd233b3 | 2360 | defsubr (&Semacs_pid); |
d940e0e4 | 2361 | defsubr (&Scurrent_time); |
a82d387c | 2362 | defsubr (&Sformat_time_string); |
4691c06d | 2363 | defsubr (&Sdecode_time); |
cce7b8a0 | 2364 | defsubr (&Sencode_time); |
35692fe0 | 2365 | defsubr (&Scurrent_time_string); |
c2662aea | 2366 | defsubr (&Scurrent_time_zone); |
143cb9a9 | 2367 | defsubr (&Sset_time_zone_rule); |
35692fe0 | 2368 | defsubr (&Ssystem_name); |
35692fe0 | 2369 | defsubr (&Smessage); |
cacc3e2c RS |
2370 | defsubr (&Smessage_box); |
2371 | defsubr (&Smessage_or_box); | |
35692fe0 | 2372 | defsubr (&Sformat); |
35692fe0 JB |
2373 | |
2374 | defsubr (&Sinsert_buffer_substring); | |
e9cf2084 | 2375 | defsubr (&Scompare_buffer_substrings); |
35692fe0 JB |
2376 | defsubr (&Ssubst_char_in_region); |
2377 | defsubr (&Stranslate_region); | |
2378 | defsubr (&Sdelete_region); | |
2379 | defsubr (&Swiden); | |
2380 | defsubr (&Snarrow_to_region); | |
2381 | defsubr (&Ssave_restriction); | |
b229b8d1 | 2382 | defsubr (&Stranspose_regions); |
35692fe0 | 2383 | } |