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35692fe0 | 1 | /* Lisp functions pertaining to editing. |
956ace37 | 2 | Copyright (C) 1985, 1986, 1987, 1989, 1992 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 | |
8 | the Free Software Foundation; either version 1, or (at your option) | |
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 | ||
21 | #include "config.h" | |
bfb61299 JB |
22 | |
23 | #ifdef VMS | |
956ace37 | 24 | #include "vms-pwd.h" |
bfb61299 | 25 | #else |
35692fe0 | 26 | #include <pwd.h> |
bfb61299 JB |
27 | #endif |
28 | ||
35692fe0 JB |
29 | #include "lisp.h" |
30 | #include "buffer.h" | |
31 | #include "window.h" | |
32 | ||
956ace37 | 33 | #include "systime.h" |
35692fe0 JB |
34 | |
35 | #define min(a, b) ((a) < (b) ? (a) : (b)) | |
36 | #define max(a, b) ((a) > (b) ? (a) : (b)) | |
37 | ||
38 | /* Some static data, and a function to initialize it for each run */ | |
39 | ||
40 | Lisp_Object Vsystem_name; | |
41 | Lisp_Object Vuser_real_name; /* login name of current user ID */ | |
42 | Lisp_Object Vuser_full_name; /* full name of current user */ | |
43 | Lisp_Object Vuser_name; /* user name from USER or LOGNAME. */ | |
44 | ||
45 | void | |
46 | init_editfns () | |
47 | { | |
52b14ac0 | 48 | char *user_name; |
35692fe0 JB |
49 | register unsigned char *p, *q, *r; |
50 | struct passwd *pw; /* password entry for the current user */ | |
51 | extern char *index (); | |
52 | Lisp_Object tem; | |
53 | ||
54 | /* Set up system_name even when dumping. */ | |
55 | ||
56 | Vsystem_name = build_string (get_system_name ()); | |
57 | p = XSTRING (Vsystem_name)->data; | |
58 | while (*p) | |
59 | { | |
60 | if (*p == ' ' || *p == '\t') | |
61 | *p = '-'; | |
62 | p++; | |
63 | } | |
64 | ||
65 | #ifndef CANNOT_DUMP | |
66 | /* Don't bother with this on initial start when just dumping out */ | |
67 | if (!initialized) | |
68 | return; | |
69 | #endif /* not CANNOT_DUMP */ | |
70 | ||
71 | pw = (struct passwd *) getpwuid (getuid ()); | |
72 | Vuser_real_name = build_string (pw ? pw->pw_name : "unknown"); | |
73 | ||
52b14ac0 JB |
74 | /* Get the effective user name, by consulting environment variables, |
75 | or the effective uid if those are unset. */ | |
76 | user_name = (char *) getenv ("USER"); | |
35692fe0 | 77 | if (!user_name) |
52b14ac0 JB |
78 | user_name = (char *) getenv ("LOGNAME"); |
79 | if (!user_name) | |
80 | { | |
81 | pw = (struct passwd *) getpwuid (geteuid ()); | |
82 | user_name = (char *) (pw ? pw->pw_name : "unknown"); | |
83 | } | |
84 | Vuser_name = build_string (user_name); | |
35692fe0 | 85 | |
52b14ac0 JB |
86 | /* If the user name claimed in the environment vars differs from |
87 | the real uid, use the claimed name to find the full name. */ | |
35692fe0 | 88 | tem = Fstring_equal (Vuser_name, Vuser_real_name); |
56a98455 | 89 | if (NILP (tem)) |
52b14ac0 | 90 | pw = (struct passwd *) getpwnam (XSTRING (Vuser_name)->data); |
35692fe0 JB |
91 | |
92 | p = (unsigned char *) (pw ? USER_FULL_NAME : "unknown"); | |
93 | q = (unsigned char *) index (p, ','); | |
94 | Vuser_full_name = make_string (p, q ? q - p : strlen (p)); | |
95 | ||
96 | #ifdef AMPERSAND_FULL_NAME | |
97 | p = XSTRING (Vuser_full_name)->data; | |
98 | q = (char *) index (p, '&'); | |
99 | /* Substitute the login name for the &, upcasing the first character. */ | |
100 | if (q) | |
101 | { | |
102 | r = (char *) alloca (strlen (p) + XSTRING (Vuser_name)->size + 1); | |
103 | bcopy (p, r, q - p); | |
104 | r[q - p] = 0; | |
52b14ac0 | 105 | strcat (r, XSTRING (Vuser_name)->data); |
35692fe0 JB |
106 | r[q - p] = UPCASE (r[q - p]); |
107 | strcat (r, q + 1); | |
108 | Vuser_full_name = build_string (r); | |
109 | } | |
110 | #endif /* AMPERSAND_FULL_NAME */ | |
111 | } | |
112 | \f | |
113 | DEFUN ("char-to-string", Fchar_to_string, Schar_to_string, 1, 1, 0, | |
114 | "Convert arg CHAR to a one-character string containing that character.") | |
115 | (n) | |
116 | Lisp_Object n; | |
117 | { | |
118 | char c; | |
119 | CHECK_NUMBER (n, 0); | |
120 | ||
121 | c = XINT (n); | |
122 | return make_string (&c, 1); | |
123 | } | |
124 | ||
125 | DEFUN ("string-to-char", Fstring_to_char, Sstring_to_char, 1, 1, 0, | |
126 | "Convert arg STRING to a character, the first character of that string.") | |
127 | (str) | |
128 | register Lisp_Object str; | |
129 | { | |
130 | register Lisp_Object val; | |
131 | register struct Lisp_String *p; | |
132 | CHECK_STRING (str, 0); | |
133 | ||
134 | p = XSTRING (str); | |
135 | if (p->size) | |
136 | XFASTINT (val) = ((unsigned char *) p->data)[0]; | |
137 | else | |
138 | XFASTINT (val) = 0; | |
139 | return val; | |
140 | } | |
141 | \f | |
142 | static Lisp_Object | |
143 | buildmark (val) | |
144 | int val; | |
145 | { | |
146 | register Lisp_Object mark; | |
147 | mark = Fmake_marker (); | |
148 | Fset_marker (mark, make_number (val), Qnil); | |
149 | return mark; | |
150 | } | |
151 | ||
152 | DEFUN ("point", Fpoint, Spoint, 0, 0, 0, | |
153 | "Return value of point, as an integer.\n\ | |
154 | Beginning of buffer is position (point-min)") | |
155 | () | |
156 | { | |
157 | Lisp_Object temp; | |
158 | XFASTINT (temp) = point; | |
159 | return temp; | |
160 | } | |
161 | ||
162 | DEFUN ("point-marker", Fpoint_marker, Spoint_marker, 0, 0, 0, | |
163 | "Return value of point, as a marker object.") | |
164 | () | |
165 | { | |
166 | return buildmark (point); | |
167 | } | |
168 | ||
169 | int | |
170 | clip_to_bounds (lower, num, upper) | |
171 | int lower, num, upper; | |
172 | { | |
173 | if (num < lower) | |
174 | return lower; | |
175 | else if (num > upper) | |
176 | return upper; | |
177 | else | |
178 | return num; | |
179 | } | |
180 | ||
181 | DEFUN ("goto-char", Fgoto_char, Sgoto_char, 1, 1, "NGoto char: ", | |
182 | "Set point to POSITION, a number or marker.\n\ | |
183 | Beginning of buffer is position (point-min), end is (point-max).") | |
184 | (n) | |
185 | register Lisp_Object n; | |
186 | { | |
187 | CHECK_NUMBER_COERCE_MARKER (n, 0); | |
188 | ||
189 | SET_PT (clip_to_bounds (BEGV, XINT (n), ZV)); | |
190 | return n; | |
191 | } | |
192 | ||
193 | static Lisp_Object | |
194 | region_limit (beginningp) | |
195 | int beginningp; | |
196 | { | |
197 | register Lisp_Object m; | |
198 | m = Fmarker_position (current_buffer->mark); | |
56a98455 | 199 | if (NILP (m)) error ("There is no region now"); |
35692fe0 JB |
200 | if ((point < XFASTINT (m)) == beginningp) |
201 | return (make_number (point)); | |
202 | else | |
203 | return (m); | |
204 | } | |
205 | ||
206 | DEFUN ("region-beginning", Fregion_beginning, Sregion_beginning, 0, 0, 0, | |
207 | "Return position of beginning of region, as an integer.") | |
208 | () | |
209 | { | |
210 | return (region_limit (1)); | |
211 | } | |
212 | ||
213 | DEFUN ("region-end", Fregion_end, Sregion_end, 0, 0, 0, | |
214 | "Return position of end of region, as an integer.") | |
215 | () | |
216 | { | |
217 | return (region_limit (0)); | |
218 | } | |
219 | ||
220 | #if 0 /* now in lisp code */ | |
221 | DEFUN ("mark", Fmark, Smark, 0, 0, 0, | |
222 | "Return this buffer's mark value as integer, or nil if no mark.\n\ | |
223 | If you are using this in an editing command, you are most likely making\n\ | |
224 | a mistake; see the documentation of `set-mark'.") | |
225 | () | |
226 | { | |
227 | return Fmarker_position (current_buffer->mark); | |
228 | } | |
229 | #endif /* commented out code */ | |
230 | ||
231 | DEFUN ("mark-marker", Fmark_marker, Smark_marker, 0, 0, 0, | |
232 | "Return this buffer's mark, as a marker object.\n\ | |
233 | Watch out! Moving this marker changes the mark position.\n\ | |
234 | If you set the marker not to point anywhere, the buffer will have no mark.") | |
235 | () | |
236 | { | |
237 | return current_buffer->mark; | |
238 | } | |
239 | ||
240 | #if 0 /* this is now in lisp code */ | |
241 | DEFUN ("set-mark", Fset_mark, Sset_mark, 1, 1, 0, | |
242 | "Set this buffer's mark to POS. Don't use this function!\n\ | |
243 | That is to say, don't use this function unless you want\n\ | |
244 | the user to see that the mark has moved, and you want the previous\n\ | |
245 | mark position to be lost.\n\ | |
246 | \n\ | |
247 | Normally, when a new mark is set, the old one should go on the stack.\n\ | |
248 | This is why most applications should use push-mark, not set-mark.\n\ | |
249 | \n\ | |
250 | Novice programmers often try to use the mark for the wrong purposes.\n\ | |
251 | The mark saves a location for the user's convenience.\n\ | |
252 | Most editing commands should not alter the mark.\n\ | |
253 | To remember a location for internal use in the Lisp program,\n\ | |
254 | store it in a Lisp variable. Example:\n\ | |
255 | \n\ | |
256 | (let ((beg (point))) (forward-line 1) (delete-region beg (point))).") | |
257 | (pos) | |
258 | Lisp_Object pos; | |
259 | { | |
56a98455 | 260 | if (NILP (pos)) |
35692fe0 JB |
261 | { |
262 | current_buffer->mark = Qnil; | |
263 | return Qnil; | |
264 | } | |
265 | CHECK_NUMBER_COERCE_MARKER (pos, 0); | |
266 | ||
56a98455 | 267 | if (NILP (current_buffer->mark)) |
35692fe0 JB |
268 | current_buffer->mark = Fmake_marker (); |
269 | ||
270 | Fset_marker (current_buffer->mark, pos, Qnil); | |
271 | return pos; | |
272 | } | |
273 | #endif /* commented-out code */ | |
274 | ||
275 | Lisp_Object | |
276 | save_excursion_save () | |
277 | { | |
278 | register int visible = XBUFFER (XWINDOW (selected_window)->buffer) == current_buffer; | |
279 | ||
280 | return Fcons (Fpoint_marker (), | |
281 | Fcons (Fcopy_marker (current_buffer->mark), visible ? Qt : Qnil)); | |
282 | } | |
283 | ||
284 | Lisp_Object | |
285 | save_excursion_restore (info) | |
286 | register Lisp_Object info; | |
287 | { | |
288 | register Lisp_Object tem; | |
289 | ||
290 | tem = Fmarker_buffer (Fcar (info)); | |
291 | /* If buffer being returned to is now deleted, avoid error */ | |
292 | /* Otherwise could get error here while unwinding to top level | |
293 | and crash */ | |
294 | /* In that case, Fmarker_buffer returns nil now. */ | |
56a98455 | 295 | if (NILP (tem)) |
35692fe0 JB |
296 | return Qnil; |
297 | Fset_buffer (tem); | |
298 | tem = Fcar (info); | |
299 | Fgoto_char (tem); | |
300 | unchain_marker (tem); | |
301 | tem = Fcar (Fcdr (info)); | |
302 | Fset_marker (current_buffer->mark, tem, Fcurrent_buffer ()); | |
303 | unchain_marker (tem); | |
304 | tem = Fcdr (Fcdr (info)); | |
56a98455 | 305 | if (!NILP (tem) && current_buffer != XBUFFER (XWINDOW (selected_window)->buffer)) |
35692fe0 JB |
306 | Fswitch_to_buffer (Fcurrent_buffer (), Qnil); |
307 | return Qnil; | |
308 | } | |
309 | ||
310 | DEFUN ("save-excursion", Fsave_excursion, Ssave_excursion, 0, UNEVALLED, 0, | |
311 | "Save point, mark, and current buffer; execute BODY; restore those things.\n\ | |
312 | Executes BODY just like `progn'.\n\ | |
313 | The values of point, mark and the current buffer are restored\n\ | |
314 | even in case of abnormal exit (throw or error).") | |
315 | (args) | |
316 | Lisp_Object args; | |
317 | { | |
318 | register Lisp_Object val; | |
319 | int count = specpdl_ptr - specpdl; | |
320 | ||
321 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
322 | ||
323 | val = Fprogn (args); | |
324 | return unbind_to (count, val); | |
325 | } | |
326 | \f | |
327 | DEFUN ("buffer-size", Fbufsize, Sbufsize, 0, 0, 0, | |
328 | "Return the number of characters in the current buffer.") | |
329 | () | |
330 | { | |
331 | Lisp_Object temp; | |
332 | XFASTINT (temp) = Z - BEG; | |
333 | return temp; | |
334 | } | |
335 | ||
336 | DEFUN ("point-min", Fpoint_min, Spoint_min, 0, 0, 0, | |
337 | "Return the minimum permissible value of point in the current buffer.\n\ | |
338 | This is 1, unless a clipping restriction is in effect.") | |
339 | () | |
340 | { | |
341 | Lisp_Object temp; | |
342 | XFASTINT (temp) = BEGV; | |
343 | return temp; | |
344 | } | |
345 | ||
346 | DEFUN ("point-min-marker", Fpoint_min_marker, Spoint_min_marker, 0, 0, 0, | |
347 | "Return a marker to the minimum permissible value of point in this buffer.\n\ | |
348 | This is the beginning, unless a clipping restriction is in effect.") | |
349 | () | |
350 | { | |
351 | return buildmark (BEGV); | |
352 | } | |
353 | ||
354 | DEFUN ("point-max", Fpoint_max, Spoint_max, 0, 0, 0, | |
355 | "Return the maximum permissible value of point in the current buffer.\n\ | |
356 | This is (1+ (buffer-size)), unless a clipping restriction is in effect,\n\ | |
357 | in which case it is less.") | |
358 | () | |
359 | { | |
360 | Lisp_Object temp; | |
361 | XFASTINT (temp) = ZV; | |
362 | return temp; | |
363 | } | |
364 | ||
365 | DEFUN ("point-max-marker", Fpoint_max_marker, Spoint_max_marker, 0, 0, 0, | |
366 | "Return a marker to the maximum permissible value of point in this buffer.\n\ | |
367 | This is (1+ (buffer-size)), unless a clipping restriction is in effect,\n\ | |
368 | in which case it is less.") | |
369 | () | |
370 | { | |
371 | return buildmark (ZV); | |
372 | } | |
373 | ||
850a8179 JB |
374 | DEFUN ("following-char", Ffollowing_char, Sfollowing_char, 0, 0, 0, |
375 | "Return the character following point, as a number.\n\ | |
376 | At the end of the buffer or accessible region, return 0.") | |
35692fe0 JB |
377 | () |
378 | { | |
379 | Lisp_Object temp; | |
850a8179 JB |
380 | if (point >= ZV) |
381 | XFASTINT (temp) = 0; | |
382 | else | |
383 | XFASTINT (temp) = FETCH_CHAR (point); | |
35692fe0 JB |
384 | return temp; |
385 | } | |
386 | ||
850a8179 JB |
387 | DEFUN ("preceding-char", Fprevious_char, Sprevious_char, 0, 0, 0, |
388 | "Return the character preceding point, as a number.\n\ | |
389 | At the beginning of the buffer or accessible region, return 0.") | |
35692fe0 JB |
390 | () |
391 | { | |
392 | Lisp_Object temp; | |
393 | if (point <= BEGV) | |
394 | XFASTINT (temp) = 0; | |
395 | else | |
396 | XFASTINT (temp) = FETCH_CHAR (point - 1); | |
397 | return temp; | |
398 | } | |
399 | ||
400 | DEFUN ("bobp", Fbobp, Sbobp, 0, 0, 0, | |
401 | "Return T if point is at the beginning of the buffer.\n\ | |
402 | If the buffer is narrowed, this means the beginning of the narrowed part.") | |
403 | () | |
404 | { | |
405 | if (point == BEGV) | |
406 | return Qt; | |
407 | return Qnil; | |
408 | } | |
409 | ||
410 | DEFUN ("eobp", Feobp, Seobp, 0, 0, 0, | |
411 | "Return T if point is at the end of the buffer.\n\ | |
412 | If the buffer is narrowed, this means the end of the narrowed part.") | |
413 | () | |
414 | { | |
415 | if (point == ZV) | |
416 | return Qt; | |
417 | return Qnil; | |
418 | } | |
419 | ||
420 | DEFUN ("bolp", Fbolp, Sbolp, 0, 0, 0, | |
421 | "Return T if point is at the beginning of a line.") | |
422 | () | |
423 | { | |
424 | if (point == BEGV || FETCH_CHAR (point - 1) == '\n') | |
425 | return Qt; | |
426 | return Qnil; | |
427 | } | |
428 | ||
429 | DEFUN ("eolp", Feolp, Seolp, 0, 0, 0, | |
430 | "Return T if point is at the end of a line.\n\ | |
431 | `End of a line' includes point being at the end of the buffer.") | |
432 | () | |
433 | { | |
434 | if (point == ZV || FETCH_CHAR (point) == '\n') | |
435 | return Qt; | |
436 | return Qnil; | |
437 | } | |
438 | ||
439 | DEFUN ("char-after", Fchar_after, Schar_after, 1, 1, 0, | |
440 | "Return character in current buffer at position POS.\n\ | |
441 | POS is an integer or a buffer pointer.\n\ | |
442 | If POS is out of range, the value is nil.") | |
443 | (pos) | |
444 | Lisp_Object pos; | |
445 | { | |
446 | register Lisp_Object val; | |
447 | register int n; | |
448 | ||
449 | CHECK_NUMBER_COERCE_MARKER (pos, 0); | |
450 | ||
451 | n = XINT (pos); | |
452 | if (n < BEGV || n >= ZV) return Qnil; | |
453 | ||
454 | XFASTINT (val) = FETCH_CHAR (n); | |
455 | return val; | |
456 | } | |
457 | \f | |
458 | DEFUN ("user-login-name", Fuser_login_name, Suser_login_name, 0, 0, 0, | |
459 | "Return the name under which the user logged in, as a string.\n\ | |
460 | This is based on the effective uid, not the real uid.\n\ | |
461 | Also, if the environment variable USER or LOGNAME is set,\n\ | |
462 | that determines the value of this function.") | |
463 | () | |
464 | { | |
465 | return Vuser_name; | |
466 | } | |
467 | ||
468 | DEFUN ("user-real-login-name", Fuser_real_login_name, Suser_real_login_name, | |
469 | 0, 0, 0, | |
470 | "Return the name of the user's real uid, as a string.\n\ | |
471 | Differs from `user-login-name' when running under `su'.") | |
472 | () | |
473 | { | |
474 | return Vuser_real_name; | |
475 | } | |
476 | ||
477 | DEFUN ("user-uid", Fuser_uid, Suser_uid, 0, 0, 0, | |
478 | "Return the effective uid of Emacs, as an integer.") | |
479 | () | |
480 | { | |
481 | return make_number (geteuid ()); | |
482 | } | |
483 | ||
484 | DEFUN ("user-real-uid", Fuser_real_uid, Suser_real_uid, 0, 0, 0, | |
485 | "Return the real uid of Emacs, as an integer.") | |
486 | () | |
487 | { | |
488 | return make_number (getuid ()); | |
489 | } | |
490 | ||
491 | DEFUN ("user-full-name", Fuser_full_name, Suser_full_name, 0, 0, 0, | |
492 | "Return the full name of the user logged in, as a string.") | |
493 | () | |
494 | { | |
495 | return Vuser_full_name; | |
496 | } | |
497 | ||
498 | DEFUN ("system-name", Fsystem_name, Ssystem_name, 0, 0, 0, | |
499 | "Return the name of the machine you are running on, as a string.") | |
500 | () | |
501 | { | |
502 | return Vsystem_name; | |
503 | } | |
504 | ||
d940e0e4 | 505 | DEFUN ("current-time", Fcurrent_time, Scurrent_time, 0, 0, 0, |
956ace37 JB |
506 | "Return the current time, as the number of seconds since 12:00 AM January 1970.\n\ |
507 | The time is returned as a list of three integers. The first has the\n\ | |
508 | most significant 16 bits of the seconds, while the second has the\n\ | |
509 | least significant 16 bits. The third integer gives the microsecond\n\ | |
510 | count.\n\ | |
511 | \n\ | |
512 | The microsecond count is zero on systems that do not provide\n\ | |
513 | resolution finer than a second.") | |
d940e0e4 JB |
514 | () |
515 | { | |
956ace37 JB |
516 | EMACS_TIME t; |
517 | Lisp_Object result[3]; | |
518 | ||
519 | EMACS_GET_TIME (t); | |
520 | XSET (result[0], Lisp_Int, (EMACS_SECS (t) >> 16) & 0xffff); | |
521 | XSET (result[1], Lisp_Int, (EMACS_SECS (t) >> 0) & 0xffff); | |
522 | XSET (result[2], Lisp_Int, EMACS_USECS (t)); | |
523 | ||
524 | return Flist (3, result); | |
d940e0e4 JB |
525 | } |
526 | \f | |
527 | ||
35692fe0 JB |
528 | DEFUN ("current-time-string", Fcurrent_time_string, Scurrent_time_string, 0, 0, 0, |
529 | "Return the current time, as a human-readable string.\n\ | |
530 | Programs can use it too, since the number of columns in each field is fixed.\n\ | |
531 | The format is `Sun Sep 16 01:03:52 1973'.\n\ | |
4b93635c | 532 | In a future Emacs version, the time zone may be added at the end.") |
35692fe0 JB |
533 | () |
534 | { | |
535 | long current_time = time ((long *) 0); | |
536 | char buf[30]; | |
537 | register char *tem = (char *) ctime (¤t_time); | |
538 | ||
539 | strncpy (buf, tem, 24); | |
540 | buf[24] = 0; | |
541 | ||
542 | return build_string (buf); | |
543 | } | |
c2662aea JB |
544 | |
545 | DEFUN ("current-time-zone", Fcurrent_time_zone, Scurrent_time_zone, 0, 0, 0, | |
546 | "Return the offset, savings state, and names for the current time zone.\n\ | |
547 | This returns a list of the form (OFFSET SAVINGS-FLAG STANDARD SAVINGS).\n\ | |
548 | OFFSET is an integer specifying how many minutes east of Greenwich the\n\ | |
549 | current time zone is located. A negative value means west of\n\ | |
550 | Greenwich. Note that this describes the standard time; If daylight\n\ | |
551 | savings time is in effect, it does not affect this value.\n\ | |
552 | SAVINGS-FLAG is non-nil iff daylight savings time or some other sort\n\ | |
553 | of seasonal time adjustment is in effect.\n\ | |
554 | STANDARD is a string giving the name of the time zone when no seasonal\n\ | |
555 | time adjustment is in effect.\n\ | |
556 | SAVINGS is a string giving the name of the time zone when there is a\n\ | |
557 | seasonal time adjustment in effect.\n\ | |
558 | If the local area does not use a seasonal time adjustment,\n\ | |
559 | SAVINGS-FLAG will always be nil, and STANDARD and SAVINGS will be the\n\ | |
560 | same.") | |
561 | () | |
562 | { | |
563 | #ifdef EMACS_CURRENT_TIME_ZONE | |
564 | int offset, savings_flag; | |
565 | char standard[11]; | |
566 | char savings[11]; | |
567 | ||
568 | EMACS_CURRENT_TIME_ZONE (&offset, &savings_flag, standard, savings); | |
569 | ||
570 | return Fcons (make_number (offset), | |
571 | Fcons ((savings_flag ? Qt : Qnil), | |
572 | Fcons (build_string (standard), | |
573 | Fcons (build_string (savings), | |
574 | Qnil)))); | |
575 | #else | |
576 | error | |
577 | ("current-time-zone has not been implemented on this operating system."); | |
578 | #endif | |
579 | } | |
580 | ||
35692fe0 JB |
581 | \f |
582 | void | |
583 | insert1 (arg) | |
584 | Lisp_Object arg; | |
585 | { | |
586 | Finsert (1, &arg); | |
587 | } | |
588 | ||
52b14ac0 JB |
589 | |
590 | /* Callers passing one argument to Finsert need not gcpro the | |
591 | argument "array", since the only element of the array will | |
592 | not be used after calling insert or insert_from_string, so | |
593 | we don't care if it gets trashed. */ | |
594 | ||
35692fe0 JB |
595 | DEFUN ("insert", Finsert, Sinsert, 0, MANY, 0, |
596 | "Insert the arguments, either strings or characters, at point.\n\ | |
597 | Point moves forward so that it ends up after the inserted text.\n\ | |
598 | Any other markers at the point of insertion remain before the text.") | |
599 | (nargs, args) | |
600 | int nargs; | |
601 | register Lisp_Object *args; | |
602 | { | |
603 | register int argnum; | |
604 | register Lisp_Object tem; | |
605 | char str[1]; | |
35692fe0 JB |
606 | |
607 | for (argnum = 0; argnum < nargs; argnum++) | |
608 | { | |
609 | tem = args[argnum]; | |
610 | retry: | |
611 | if (XTYPE (tem) == Lisp_Int) | |
612 | { | |
613 | str[0] = XINT (tem); | |
614 | insert (str, 1); | |
615 | } | |
616 | else if (XTYPE (tem) == Lisp_String) | |
617 | { | |
618 | insert_from_string (tem, 0, XSTRING (tem)->size); | |
619 | } | |
620 | else | |
621 | { | |
622 | tem = wrong_type_argument (Qchar_or_string_p, tem); | |
623 | goto retry; | |
624 | } | |
625 | } | |
626 | ||
35692fe0 JB |
627 | return Qnil; |
628 | } | |
629 | ||
630 | DEFUN ("insert-before-markers", Finsert_before_markers, Sinsert_before_markers, 0, MANY, 0, | |
631 | "Insert strings or characters at point, relocating markers after the text.\n\ | |
632 | Point moves forward so that it ends up after the inserted text.\n\ | |
633 | Any other markers at the point of insertion also end up after the text.") | |
634 | (nargs, args) | |
635 | int nargs; | |
636 | register Lisp_Object *args; | |
637 | { | |
638 | register int argnum; | |
639 | register Lisp_Object tem; | |
640 | char str[1]; | |
35692fe0 JB |
641 | |
642 | for (argnum = 0; argnum < nargs; argnum++) | |
643 | { | |
644 | tem = args[argnum]; | |
645 | retry: | |
646 | if (XTYPE (tem) == Lisp_Int) | |
647 | { | |
648 | str[0] = XINT (tem); | |
649 | insert_before_markers (str, 1); | |
650 | } | |
651 | else if (XTYPE (tem) == Lisp_String) | |
652 | { | |
653 | insert_from_string_before_markers (tem, 0, XSTRING (tem)->size); | |
654 | } | |
655 | else | |
656 | { | |
657 | tem = wrong_type_argument (Qchar_or_string_p, tem); | |
658 | goto retry; | |
659 | } | |
660 | } | |
661 | ||
35692fe0 JB |
662 | return Qnil; |
663 | } | |
664 | \f | |
665 | DEFUN ("insert-char", Finsert_char, Sinsert_char, 2, 2, 0, | |
666 | "Insert COUNT (second arg) copies of CHAR (first arg).\n\ | |
667 | Point and all markers are affected as in the function `insert'.\n\ | |
668 | Both arguments are required.") | |
669 | (chr, count) | |
670 | Lisp_Object chr, count; | |
671 | { | |
672 | register unsigned char *string; | |
673 | register int strlen; | |
674 | register int i, n; | |
675 | ||
676 | CHECK_NUMBER (chr, 0); | |
677 | CHECK_NUMBER (count, 1); | |
678 | ||
679 | n = XINT (count); | |
680 | if (n <= 0) | |
681 | return Qnil; | |
682 | strlen = min (n, 256); | |
683 | string = (unsigned char *) alloca (strlen); | |
684 | for (i = 0; i < strlen; i++) | |
685 | string[i] = XFASTINT (chr); | |
686 | while (n >= strlen) | |
687 | { | |
688 | insert (string, strlen); | |
689 | n -= strlen; | |
690 | } | |
691 | if (n > 0) | |
692 | insert (string, n); | |
693 | return Qnil; | |
694 | } | |
695 | ||
696 | \f | |
ffd56f97 JB |
697 | /* Making strings from buffer contents. */ |
698 | ||
699 | /* Return a Lisp_String containing the text of the current buffer from | |
700 | START to END. | |
701 | ||
702 | We don't want to use plain old make_string here, because it calls | |
703 | make_uninit_string, which can cause the buffer arena to be | |
704 | compacted. make_string has no way of knowing that the data has | |
705 | been moved, and thus copies the wrong data into the string. This | |
706 | doesn't effect most of the other users of make_string, so it should | |
707 | be left as is. But we should use this function when conjuring | |
708 | buffer substrings. */ | |
709 | Lisp_Object | |
710 | make_buffer_string (start, end) | |
711 | int start, end; | |
712 | { | |
713 | Lisp_Object result; | |
714 | ||
715 | if (start < GPT && GPT < end) | |
716 | move_gap (start); | |
717 | ||
718 | result = make_uninit_string (end - start); | |
719 | bcopy (&FETCH_CHAR (start), XSTRING (result)->data, end - start); | |
720 | ||
721 | return result; | |
722 | } | |
35692fe0 JB |
723 | |
724 | DEFUN ("buffer-substring", Fbuffer_substring, Sbuffer_substring, 2, 2, 0, | |
725 | "Return the contents of part of the current buffer as a string.\n\ | |
726 | The two arguments START and END are character positions;\n\ | |
727 | they can be in either order.") | |
728 | (b, e) | |
729 | Lisp_Object b, e; | |
730 | { | |
731 | register int beg, end; | |
35692fe0 JB |
732 | |
733 | validate_region (&b, &e); | |
734 | beg = XINT (b); | |
735 | end = XINT (e); | |
736 | ||
ffd56f97 | 737 | return make_buffer_string (beg, end); |
35692fe0 JB |
738 | } |
739 | ||
740 | DEFUN ("buffer-string", Fbuffer_string, Sbuffer_string, 0, 0, 0, | |
741 | "Return the contents of the current buffer as a string.") | |
742 | () | |
743 | { | |
ffd56f97 | 744 | return make_buffer_string (BEGV, ZV); |
35692fe0 JB |
745 | } |
746 | ||
747 | DEFUN ("insert-buffer-substring", Finsert_buffer_substring, Sinsert_buffer_substring, | |
748 | 1, 3, 0, | |
749 | "Insert before point a substring of the contents buffer BUFFER.\n\ | |
750 | BUFFER may be a buffer or a buffer name.\n\ | |
751 | Arguments START and END are character numbers specifying the substring.\n\ | |
752 | They default to the beginning and the end of BUFFER.") | |
753 | (buf, b, e) | |
754 | Lisp_Object buf, b, e; | |
755 | { | |
756 | register int beg, end, exch; | |
757 | register struct buffer *bp; | |
758 | ||
759 | buf = Fget_buffer (buf); | |
760 | bp = XBUFFER (buf); | |
761 | ||
56a98455 | 762 | if (NILP (b)) |
35692fe0 JB |
763 | beg = BUF_BEGV (bp); |
764 | else | |
765 | { | |
766 | CHECK_NUMBER_COERCE_MARKER (b, 0); | |
767 | beg = XINT (b); | |
768 | } | |
56a98455 | 769 | if (NILP (e)) |
35692fe0 JB |
770 | end = BUF_ZV (bp); |
771 | else | |
772 | { | |
773 | CHECK_NUMBER_COERCE_MARKER (e, 1); | |
774 | end = XINT (e); | |
775 | } | |
776 | ||
777 | if (beg > end) | |
778 | exch = beg, beg = end, end = exch; | |
779 | ||
780 | /* Move the gap or create enough gap in the current buffer. */ | |
781 | ||
782 | if (point != GPT) | |
783 | move_gap (point); | |
784 | if (GAP_SIZE < end - beg) | |
785 | make_gap (end - beg - GAP_SIZE); | |
786 | ||
787 | if (!(BUF_BEGV (bp) <= beg | |
788 | && beg <= end | |
789 | && end <= BUF_ZV (bp))) | |
790 | args_out_of_range (b, e); | |
791 | ||
792 | /* Now the actual insertion will not do any gap motion, | |
793 | so it matters not if BUF is the current buffer. */ | |
794 | if (beg < BUF_GPT (bp)) | |
795 | { | |
796 | insert (BUF_CHAR_ADDRESS (bp, beg), min (end, BUF_GPT (bp)) - beg); | |
797 | beg = min (end, BUF_GPT (bp)); | |
798 | } | |
799 | if (beg < end) | |
800 | insert (BUF_CHAR_ADDRESS (bp, beg), end - beg); | |
801 | ||
802 | return Qnil; | |
803 | } | |
804 | \f | |
805 | DEFUN ("subst-char-in-region", Fsubst_char_in_region, | |
806 | Ssubst_char_in_region, 4, 5, 0, | |
807 | "From START to END, replace FROMCHAR with TOCHAR each time it occurs.\n\ | |
808 | If optional arg NOUNDO is non-nil, don't record this change for undo\n\ | |
809 | and don't mark the buffer as really changed.") | |
810 | (start, end, fromchar, tochar, noundo) | |
811 | Lisp_Object start, end, fromchar, tochar, noundo; | |
812 | { | |
813 | register int pos, stop, look; | |
814 | ||
815 | validate_region (&start, &end); | |
816 | CHECK_NUMBER (fromchar, 2); | |
817 | CHECK_NUMBER (tochar, 3); | |
818 | ||
819 | pos = XINT (start); | |
820 | stop = XINT (end); | |
821 | look = XINT (fromchar); | |
822 | ||
823 | modify_region (pos, stop); | |
56a98455 | 824 | if (! NILP (noundo)) |
35692fe0 JB |
825 | { |
826 | if (MODIFF - 1 == current_buffer->save_modified) | |
827 | current_buffer->save_modified++; | |
828 | if (MODIFF - 1 == current_buffer->auto_save_modified) | |
829 | current_buffer->auto_save_modified++; | |
830 | } | |
831 | ||
832 | while (pos < stop) | |
833 | { | |
834 | if (FETCH_CHAR (pos) == look) | |
835 | { | |
56a98455 | 836 | if (NILP (noundo)) |
35692fe0 JB |
837 | record_change (pos, 1); |
838 | FETCH_CHAR (pos) = XINT (tochar); | |
56a98455 | 839 | if (NILP (noundo)) |
35692fe0 JB |
840 | signal_after_change (pos, 1, 1); |
841 | } | |
842 | pos++; | |
843 | } | |
844 | ||
845 | return Qnil; | |
846 | } | |
847 | ||
848 | DEFUN ("translate-region", Ftranslate_region, Stranslate_region, 3, 3, 0, | |
849 | "From START to END, translate characters according to TABLE.\n\ | |
850 | TABLE is a string; the Nth character in it is the mapping\n\ | |
851 | for the character with code N. Returns the number of characters changed.") | |
852 | (start, end, table) | |
853 | Lisp_Object start; | |
854 | Lisp_Object end; | |
855 | register Lisp_Object table; | |
856 | { | |
857 | register int pos, stop; /* Limits of the region. */ | |
858 | register unsigned char *tt; /* Trans table. */ | |
859 | register int oc; /* Old character. */ | |
860 | register int nc; /* New character. */ | |
861 | int cnt; /* Number of changes made. */ | |
862 | Lisp_Object z; /* Return. */ | |
863 | int size; /* Size of translate table. */ | |
864 | ||
865 | validate_region (&start, &end); | |
866 | CHECK_STRING (table, 2); | |
867 | ||
868 | size = XSTRING (table)->size; | |
869 | tt = XSTRING (table)->data; | |
870 | ||
871 | pos = XINT (start); | |
872 | stop = XINT (end); | |
873 | modify_region (pos, stop); | |
874 | ||
875 | cnt = 0; | |
876 | for (; pos < stop; ++pos) | |
877 | { | |
878 | oc = FETCH_CHAR (pos); | |
879 | if (oc < size) | |
880 | { | |
881 | nc = tt[oc]; | |
882 | if (nc != oc) | |
883 | { | |
884 | record_change (pos, 1); | |
885 | FETCH_CHAR (pos) = nc; | |
886 | signal_after_change (pos, 1, 1); | |
887 | ++cnt; | |
888 | } | |
889 | } | |
890 | } | |
891 | ||
892 | XFASTINT (z) = cnt; | |
893 | return (z); | |
894 | } | |
895 | ||
896 | DEFUN ("delete-region", Fdelete_region, Sdelete_region, 2, 2, "r", | |
897 | "Delete the text between point and mark.\n\ | |
898 | When called from a program, expects two arguments,\n\ | |
899 | positions (integers or markers) specifying the stretch to be deleted.") | |
900 | (b, e) | |
901 | Lisp_Object b, e; | |
902 | { | |
903 | validate_region (&b, &e); | |
904 | del_range (XINT (b), XINT (e)); | |
905 | return Qnil; | |
906 | } | |
907 | \f | |
908 | DEFUN ("widen", Fwiden, Swiden, 0, 0, "", | |
909 | "Remove restrictions (narrowing) from current buffer.\n\ | |
910 | This allows the buffer's full text to be seen and edited.") | |
911 | () | |
912 | { | |
913 | BEGV = BEG; | |
914 | SET_BUF_ZV (current_buffer, Z); | |
915 | clip_changed = 1; | |
52b14ac0 JB |
916 | /* Changing the buffer bounds invalidates any recorded current column. */ |
917 | invalidate_current_column (); | |
35692fe0 JB |
918 | return Qnil; |
919 | } | |
920 | ||
921 | DEFUN ("narrow-to-region", Fnarrow_to_region, Snarrow_to_region, 2, 2, "r", | |
922 | "Restrict editing in this buffer to the current region.\n\ | |
923 | The rest of the text becomes temporarily invisible and untouchable\n\ | |
924 | but is not deleted; if you save the buffer in a file, the invisible\n\ | |
925 | text is included in the file. \\[widen] makes all visible again.\n\ | |
926 | See also `save-restriction'.\n\ | |
927 | \n\ | |
928 | When calling from a program, pass two arguments; positions (integers\n\ | |
929 | or markers) bounding the text that should remain visible.") | |
930 | (b, e) | |
931 | register Lisp_Object b, e; | |
932 | { | |
933 | register int i; | |
934 | ||
935 | CHECK_NUMBER_COERCE_MARKER (b, 0); | |
936 | CHECK_NUMBER_COERCE_MARKER (e, 1); | |
937 | ||
938 | if (XINT (b) > XINT (e)) | |
939 | { | |
940 | i = XFASTINT (b); | |
941 | b = e; | |
942 | XFASTINT (e) = i; | |
943 | } | |
944 | ||
945 | if (!(BEG <= XINT (b) && XINT (b) <= XINT (e) && XINT (e) <= Z)) | |
946 | args_out_of_range (b, e); | |
947 | ||
948 | BEGV = XFASTINT (b); | |
949 | SET_BUF_ZV (current_buffer, XFASTINT (e)); | |
950 | if (point < XFASTINT (b)) | |
951 | SET_PT (XFASTINT (b)); | |
952 | if (point > XFASTINT (e)) | |
953 | SET_PT (XFASTINT (e)); | |
954 | clip_changed = 1; | |
52b14ac0 JB |
955 | /* Changing the buffer bounds invalidates any recorded current column. */ |
956 | invalidate_current_column (); | |
35692fe0 JB |
957 | return Qnil; |
958 | } | |
959 | ||
960 | Lisp_Object | |
961 | save_restriction_save () | |
962 | { | |
963 | register Lisp_Object bottom, top; | |
964 | /* Note: I tried using markers here, but it does not win | |
965 | because insertion at the end of the saved region | |
966 | does not advance mh and is considered "outside" the saved region. */ | |
967 | XFASTINT (bottom) = BEGV - BEG; | |
968 | XFASTINT (top) = Z - ZV; | |
969 | ||
970 | return Fcons (Fcurrent_buffer (), Fcons (bottom, top)); | |
971 | } | |
972 | ||
973 | Lisp_Object | |
974 | save_restriction_restore (data) | |
975 | Lisp_Object data; | |
976 | { | |
977 | register struct buffer *buf; | |
978 | register int newhead, newtail; | |
979 | register Lisp_Object tem; | |
980 | ||
981 | buf = XBUFFER (XCONS (data)->car); | |
982 | ||
983 | data = XCONS (data)->cdr; | |
984 | ||
985 | tem = XCONS (data)->car; | |
986 | newhead = XINT (tem); | |
987 | tem = XCONS (data)->cdr; | |
988 | newtail = XINT (tem); | |
989 | if (newhead + newtail > BUF_Z (buf) - BUF_BEG (buf)) | |
990 | { | |
991 | newhead = 0; | |
992 | newtail = 0; | |
993 | } | |
994 | BUF_BEGV (buf) = BUF_BEG (buf) + newhead; | |
995 | SET_BUF_ZV (buf, BUF_Z (buf) - newtail); | |
996 | clip_changed = 1; | |
997 | ||
998 | /* If point is outside the new visible range, move it inside. */ | |
999 | SET_BUF_PT (buf, | |
1000 | clip_to_bounds (BUF_BEGV (buf), BUF_PT (buf), BUF_ZV (buf))); | |
1001 | ||
1002 | return Qnil; | |
1003 | } | |
1004 | ||
1005 | DEFUN ("save-restriction", Fsave_restriction, Ssave_restriction, 0, UNEVALLED, 0, | |
1006 | "Execute BODY, saving and restoring current buffer's restrictions.\n\ | |
1007 | The buffer's restrictions make parts of the beginning and end invisible.\n\ | |
1008 | \(They are set up with `narrow-to-region' and eliminated with `widen'.)\n\ | |
1009 | This special form, `save-restriction', saves the current buffer's restrictions\n\ | |
1010 | when it is entered, and restores them when it is exited.\n\ | |
1011 | So any `narrow-to-region' within BODY lasts only until the end of the form.\n\ | |
1012 | The old restrictions settings are restored\n\ | |
1013 | even in case of abnormal exit (throw or error).\n\ | |
1014 | \n\ | |
1015 | The value returned is the value of the last form in BODY.\n\ | |
1016 | \n\ | |
1017 | `save-restriction' can get confused if, within the BODY, you widen\n\ | |
1018 | and then make changes outside the area within the saved restrictions.\n\ | |
1019 | \n\ | |
1020 | Note: if you are using both `save-excursion' and `save-restriction',\n\ | |
1021 | use `save-excursion' outermost:\n\ | |
1022 | (save-excursion (save-restriction ...))") | |
1023 | (body) | |
1024 | Lisp_Object body; | |
1025 | { | |
1026 | register Lisp_Object val; | |
1027 | int count = specpdl_ptr - specpdl; | |
1028 | ||
1029 | record_unwind_protect (save_restriction_restore, save_restriction_save ()); | |
1030 | val = Fprogn (body); | |
1031 | return unbind_to (count, val); | |
1032 | } | |
1033 | \f | |
1034 | DEFUN ("message", Fmessage, Smessage, 1, MANY, 0, | |
1035 | "Print a one-line message at the bottom of the screen.\n\ | |
1036 | The first argument is a control string.\n\ | |
1037 | It may contain %s or %d or %c to print successive following arguments.\n\ | |
1038 | %s means print an argument as a string, %d means print as number in decimal,\n\ | |
1039 | %c means print a number as a single character.\n\ | |
1040 | The argument used by %s must be a string or a symbol;\n\ | |
1041 | the argument used by %d or %c must be a number.") | |
1042 | (nargs, args) | |
1043 | int nargs; | |
1044 | Lisp_Object *args; | |
1045 | { | |
1046 | register Lisp_Object val; | |
1047 | ||
35692fe0 JB |
1048 | val = Fformat (nargs, args); |
1049 | message ("%s", XSTRING (val)->data); | |
1050 | return val; | |
1051 | } | |
1052 | ||
1053 | DEFUN ("format", Fformat, Sformat, 1, MANY, 0, | |
1054 | "Format a string out of a control-string and arguments.\n\ | |
1055 | The first argument is a control string.\n\ | |
1056 | The other arguments are substituted into it to make the result, a string.\n\ | |
1057 | It may contain %-sequences meaning to substitute the next argument.\n\ | |
1058 | %s means print a string argument. Actually, prints any object, with `princ'.\n\ | |
1059 | %d means print as number in decimal (%o octal, %x hex).\n\ | |
1060 | %c means print a number as a single character.\n\ | |
1061 | %S means print any object as an s-expression (using prin1).\n\ | |
52b14ac0 JB |
1062 | The argument used for %d, %o, %x or %c must be a number.\n\ |
1063 | Use %% to put a single % into the output.") | |
35692fe0 JB |
1064 | (nargs, args) |
1065 | int nargs; | |
1066 | register Lisp_Object *args; | |
1067 | { | |
1068 | register int n; /* The number of the next arg to substitute */ | |
1069 | register int total = 5; /* An estimate of the final length */ | |
1070 | char *buf; | |
1071 | register unsigned char *format, *end; | |
1072 | int length; | |
1073 | extern char *index (); | |
1074 | /* It should not be necessary to GCPRO ARGS, because | |
1075 | the caller in the interpreter should take care of that. */ | |
1076 | ||
1077 | CHECK_STRING (args[0], 0); | |
1078 | format = XSTRING (args[0])->data; | |
1079 | end = format + XSTRING (args[0])->size; | |
1080 | ||
1081 | n = 0; | |
1082 | while (format != end) | |
1083 | if (*format++ == '%') | |
1084 | { | |
1085 | int minlen; | |
1086 | ||
1087 | /* Process a numeric arg and skip it. */ | |
1088 | minlen = atoi (format); | |
1089 | if (minlen > 0) | |
1090 | total += minlen; | |
1091 | else | |
1092 | total -= minlen; | |
1093 | while ((*format >= '0' && *format <= '9') | |
1094 | || *format == '-' || *format == ' ' || *format == '.') | |
1095 | format++; | |
1096 | ||
1097 | if (*format == '%') | |
1098 | format++; | |
1099 | else if (++n >= nargs) | |
1100 | ; | |
1101 | else if (*format == 'S') | |
1102 | { | |
1103 | /* For `S', prin1 the argument and then treat like a string. */ | |
1104 | register Lisp_Object tem; | |
1105 | tem = Fprin1_to_string (args[n], Qnil); | |
1106 | args[n] = tem; | |
1107 | goto string; | |
1108 | } | |
1109 | else if (XTYPE (args[n]) == Lisp_Symbol) | |
1110 | { | |
1111 | XSET (args[n], Lisp_String, XSYMBOL (args[n])->name); | |
1112 | goto string; | |
1113 | } | |
1114 | else if (XTYPE (args[n]) == Lisp_String) | |
1115 | { | |
1116 | string: | |
1117 | total += XSTRING (args[n])->size; | |
1118 | } | |
1119 | /* Would get MPV otherwise, since Lisp_Int's `point' to low memory. */ | |
1120 | else if (XTYPE (args[n]) == Lisp_Int && *format != 's') | |
1121 | { | |
4746118a | 1122 | #ifdef LISP_FLOAT_TYPE |
35692fe0 JB |
1123 | /* The following loop issumes the Lisp type indicates |
1124 | the proper way to pass the argument. | |
1125 | So make sure we have a flonum if the argument should | |
1126 | be a double. */ | |
1127 | if (*format == 'e' || *format == 'f' || *format == 'g') | |
1128 | args[n] = Ffloat (args[n]); | |
4746118a | 1129 | #endif |
35692fe0 JB |
1130 | total += 10; |
1131 | } | |
4746118a | 1132 | #ifdef LISP_FLOAT_TYPE |
35692fe0 JB |
1133 | else if (XTYPE (args[n]) == Lisp_Float && *format != 's') |
1134 | { | |
1135 | if (! (*format == 'e' || *format == 'f' || *format == 'g')) | |
1136 | args[n] = Ftruncate (args[n]); | |
1137 | total += 20; | |
1138 | } | |
4746118a | 1139 | #endif |
35692fe0 JB |
1140 | else |
1141 | { | |
1142 | /* Anything but a string, convert to a string using princ. */ | |
1143 | register Lisp_Object tem; | |
1144 | tem = Fprin1_to_string (args[n], Qt); | |
1145 | args[n] = tem; | |
1146 | goto string; | |
1147 | } | |
1148 | } | |
1149 | ||
1150 | { | |
1151 | register int nstrings = n + 1; | |
1152 | register unsigned char **strings | |
1153 | = (unsigned char **) alloca (nstrings * sizeof (unsigned char *)); | |
1154 | ||
1155 | for (n = 0; n < nstrings; n++) | |
1156 | { | |
1157 | if (n >= nargs) | |
1158 | strings[n] = (unsigned char *) ""; | |
1159 | else if (XTYPE (args[n]) == Lisp_Int) | |
1160 | /* We checked above that the corresponding format effector | |
1161 | isn't %s, which would cause MPV. */ | |
1162 | strings[n] = (unsigned char *) XINT (args[n]); | |
4746118a | 1163 | #ifdef LISP_FLOAT_TYPE |
35692fe0 JB |
1164 | else if (XTYPE (args[n]) == Lisp_Float) |
1165 | { | |
1166 | union { double d; int half[2]; } u; | |
1167 | ||
1168 | u.d = XFLOAT (args[n])->data; | |
1169 | strings[n++] = (unsigned char *) u.half[0]; | |
1170 | strings[n] = (unsigned char *) u.half[1]; | |
1171 | } | |
4746118a | 1172 | #endif |
35692fe0 JB |
1173 | else |
1174 | strings[n] = XSTRING (args[n])->data; | |
1175 | } | |
1176 | ||
1177 | /* Format it in bigger and bigger buf's until it all fits. */ | |
1178 | while (1) | |
1179 | { | |
1180 | buf = (char *) alloca (total + 1); | |
1181 | buf[total - 1] = 0; | |
1182 | ||
1183 | length = doprnt (buf, total + 1, strings[0], end, nargs, strings + 1); | |
1184 | if (buf[total - 1] == 0) | |
1185 | break; | |
1186 | ||
1187 | total *= 2; | |
1188 | } | |
1189 | } | |
1190 | ||
1191 | /* UNGCPRO; */ | |
1192 | return make_string (buf, length); | |
1193 | } | |
1194 | ||
1195 | /* VARARGS 1 */ | |
1196 | Lisp_Object | |
1197 | #ifdef NO_ARG_ARRAY | |
1198 | format1 (string1, arg0, arg1, arg2, arg3, arg4) | |
1199 | int arg0, arg1, arg2, arg3, arg4; | |
1200 | #else | |
1201 | format1 (string1) | |
1202 | #endif | |
1203 | char *string1; | |
1204 | { | |
1205 | char buf[100]; | |
1206 | #ifdef NO_ARG_ARRAY | |
1207 | int args[5]; | |
1208 | args[0] = arg0; | |
1209 | args[1] = arg1; | |
1210 | args[2] = arg2; | |
1211 | args[3] = arg3; | |
1212 | args[4] = arg4; | |
1213 | doprnt (buf, sizeof buf, string1, 0, 5, args); | |
1214 | #else | |
1215 | doprnt (buf, sizeof buf, string1, 0, 5, &string1 + 1); | |
1216 | #endif | |
1217 | return build_string (buf); | |
1218 | } | |
1219 | \f | |
1220 | DEFUN ("char-equal", Fchar_equal, Schar_equal, 2, 2, 0, | |
1221 | "Return t if two characters match, optionally ignoring case.\n\ | |
1222 | Both arguments must be characters (i.e. integers).\n\ | |
1223 | Case is ignored if `case-fold-search' is non-nil in the current buffer.") | |
1224 | (c1, c2) | |
1225 | register Lisp_Object c1, c2; | |
1226 | { | |
1227 | unsigned char *downcase = DOWNCASE_TABLE; | |
1228 | CHECK_NUMBER (c1, 0); | |
1229 | CHECK_NUMBER (c2, 1); | |
1230 | ||
56a98455 | 1231 | if (!NILP (current_buffer->case_fold_search) |
35692fe0 JB |
1232 | ? downcase[0xff & XFASTINT (c1)] == downcase[0xff & XFASTINT (c2)] |
1233 | : XINT (c1) == XINT (c2)) | |
1234 | return Qt; | |
1235 | return Qnil; | |
1236 | } | |
1237 | ||
35692fe0 JB |
1238 | \f |
1239 | void | |
1240 | syms_of_editfns () | |
1241 | { | |
1242 | DEFVAR_LISP ("system-name", &Vsystem_name, | |
1243 | "The name of the machine Emacs is running on."); | |
1244 | ||
1245 | DEFVAR_LISP ("user-full-name", &Vuser_full_name, | |
1246 | "The full name of the user logged in."); | |
1247 | ||
1248 | DEFVAR_LISP ("user-name", &Vuser_name, | |
1249 | "The user's name, based on the effective uid."); | |
1250 | ||
1251 | DEFVAR_LISP ("user-real-name", &Vuser_real_name, | |
1252 | "The user's name, base upon the real uid."); | |
1253 | ||
1254 | defsubr (&Schar_equal); | |
1255 | defsubr (&Sgoto_char); | |
1256 | defsubr (&Sstring_to_char); | |
1257 | defsubr (&Schar_to_string); | |
1258 | defsubr (&Sbuffer_substring); | |
1259 | defsubr (&Sbuffer_string); | |
1260 | ||
1261 | defsubr (&Spoint_marker); | |
1262 | defsubr (&Smark_marker); | |
1263 | defsubr (&Spoint); | |
1264 | defsubr (&Sregion_beginning); | |
1265 | defsubr (&Sregion_end); | |
1266 | /* defsubr (&Smark); */ | |
1267 | /* defsubr (&Sset_mark); */ | |
1268 | defsubr (&Ssave_excursion); | |
1269 | ||
1270 | defsubr (&Sbufsize); | |
1271 | defsubr (&Spoint_max); | |
1272 | defsubr (&Spoint_min); | |
1273 | defsubr (&Spoint_min_marker); | |
1274 | defsubr (&Spoint_max_marker); | |
1275 | ||
1276 | defsubr (&Sbobp); | |
1277 | defsubr (&Seobp); | |
1278 | defsubr (&Sbolp); | |
1279 | defsubr (&Seolp); | |
850a8179 JB |
1280 | defsubr (&Sfollowing_char); |
1281 | defsubr (&Sprevious_char); | |
35692fe0 JB |
1282 | defsubr (&Schar_after); |
1283 | defsubr (&Sinsert); | |
1284 | defsubr (&Sinsert_before_markers); | |
1285 | defsubr (&Sinsert_char); | |
1286 | ||
1287 | defsubr (&Suser_login_name); | |
1288 | defsubr (&Suser_real_login_name); | |
1289 | defsubr (&Suser_uid); | |
1290 | defsubr (&Suser_real_uid); | |
1291 | defsubr (&Suser_full_name); | |
d940e0e4 | 1292 | defsubr (&Scurrent_time); |
35692fe0 | 1293 | defsubr (&Scurrent_time_string); |
c2662aea | 1294 | defsubr (&Scurrent_time_zone); |
35692fe0 | 1295 | defsubr (&Ssystem_name); |
35692fe0 JB |
1296 | defsubr (&Smessage); |
1297 | defsubr (&Sformat); | |
35692fe0 JB |
1298 | |
1299 | defsubr (&Sinsert_buffer_substring); | |
1300 | defsubr (&Ssubst_char_in_region); | |
1301 | defsubr (&Stranslate_region); | |
1302 | defsubr (&Sdelete_region); | |
1303 | defsubr (&Swiden); | |
1304 | defsubr (&Snarrow_to_region); | |
1305 | defsubr (&Ssave_restriction); | |
1306 | } |