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35692fe0 | 1 | /* Lisp functions pertaining to editing. |
31c8f881 | 2 | Copyright (C) 1985,86,87,89,93,94,95,96,97,98 Free Software Foundation, Inc. |
35692fe0 JB |
3 | |
4 | This file is part of GNU Emacs. | |
5 | ||
6 | GNU Emacs is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
7c938215 | 8 | the Free Software Foundation; either version 2, or (at your option) |
35692fe0 JB |
9 | any later version. |
10 | ||
11 | GNU Emacs is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GNU Emacs; see the file COPYING. If not, write to | |
5a7670bf RS |
18 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
19 | Boston, MA 02111-1307, USA. */ | |
35692fe0 JB |
20 | |
21 | ||
738429d1 JB |
22 | #include <sys/types.h> |
23 | ||
18160b98 | 24 | #include <config.h> |
bfb61299 JB |
25 | |
26 | #ifdef VMS | |
956ace37 | 27 | #include "vms-pwd.h" |
bfb61299 | 28 | #else |
35692fe0 | 29 | #include <pwd.h> |
bfb61299 JB |
30 | #endif |
31 | ||
dfcf069d AS |
32 | #ifdef STDC_HEADERS |
33 | #include <stdlib.h> | |
34 | #endif | |
35 | ||
36 | #ifdef HAVE_UNISTD_H | |
37 | #include <unistd.h> | |
38 | #endif | |
39 | ||
35692fe0 | 40 | #include "lisp.h" |
74d6d8c5 | 41 | #include "intervals.h" |
35692fe0 | 42 | #include "buffer.h" |
fb8106e8 | 43 | #include "charset.h" |
35692fe0 JB |
44 | #include "window.h" |
45 | ||
956ace37 | 46 | #include "systime.h" |
35692fe0 JB |
47 | |
48 | #define min(a, b) ((a) < (b) ? (a) : (b)) | |
49 | #define max(a, b) ((a) > (b) ? (a) : (b)) | |
50 | ||
a03eaf1c RS |
51 | #ifndef NULL |
52 | #define NULL 0 | |
53 | #endif | |
54 | ||
c59b5089 PE |
55 | extern char **environ; |
56 | extern Lisp_Object make_time (); | |
b1b0ee5a | 57 | extern void insert_from_buffer (); |
94751666 | 58 | static int tm_diff (); |
260e2e2a | 59 | static void update_buffer_properties (); |
b771d0da | 60 | size_t emacs_strftime (); |
a92ae0ce | 61 | void set_time_zone_rule (); |
260e2e2a KH |
62 | |
63 | Lisp_Object Vbuffer_access_fontify_functions; | |
64 | Lisp_Object Qbuffer_access_fontify_functions; | |
65 | Lisp_Object Vbuffer_access_fontified_property; | |
b1b0ee5a | 66 | |
e3ed8469 KH |
67 | Lisp_Object Fuser_full_name (); |
68 | ||
35692fe0 JB |
69 | /* Some static data, and a function to initialize it for each run */ |
70 | ||
71 | Lisp_Object Vsystem_name; | |
35b34f72 KH |
72 | Lisp_Object Vuser_real_login_name; /* login name of current user ID */ |
73 | Lisp_Object Vuser_full_name; /* full name of current user */ | |
74 | Lisp_Object Vuser_login_name; /* user name from LOGNAME or USER */ | |
35692fe0 JB |
75 | |
76 | void | |
77 | init_editfns () | |
78 | { | |
52b14ac0 | 79 | char *user_name; |
35692fe0 JB |
80 | register unsigned char *p, *q, *r; |
81 | struct passwd *pw; /* password entry for the current user */ | |
35692fe0 JB |
82 | Lisp_Object tem; |
83 | ||
84 | /* Set up system_name even when dumping. */ | |
ac988277 | 85 | init_system_name (); |
35692fe0 JB |
86 | |
87 | #ifndef CANNOT_DUMP | |
88 | /* Don't bother with this on initial start when just dumping out */ | |
89 | if (!initialized) | |
90 | return; | |
91 | #endif /* not CANNOT_DUMP */ | |
92 | ||
93 | pw = (struct passwd *) getpwuid (getuid ()); | |
87485d6f MW |
94 | #ifdef MSDOS |
95 | /* We let the real user name default to "root" because that's quite | |
96 | accurate on MSDOG and because it lets Emacs find the init file. | |
97 | (The DVX libraries override the Djgpp libraries here.) */ | |
35b34f72 | 98 | Vuser_real_login_name = build_string (pw ? pw->pw_name : "root"); |
87485d6f | 99 | #else |
35b34f72 | 100 | Vuser_real_login_name = build_string (pw ? pw->pw_name : "unknown"); |
87485d6f | 101 | #endif |
35692fe0 | 102 | |
52b14ac0 JB |
103 | /* Get the effective user name, by consulting environment variables, |
104 | or the effective uid if those are unset. */ | |
2c9ae24e | 105 | user_name = (char *) getenv ("LOGNAME"); |
35692fe0 | 106 | if (!user_name) |
4691c06d RS |
107 | #ifdef WINDOWSNT |
108 | user_name = (char *) getenv ("USERNAME"); /* it's USERNAME on NT */ | |
109 | #else /* WINDOWSNT */ | |
2c9ae24e | 110 | user_name = (char *) getenv ("USER"); |
4691c06d | 111 | #endif /* WINDOWSNT */ |
52b14ac0 JB |
112 | if (!user_name) |
113 | { | |
114 | pw = (struct passwd *) getpwuid (geteuid ()); | |
115 | user_name = (char *) (pw ? pw->pw_name : "unknown"); | |
116 | } | |
35b34f72 | 117 | Vuser_login_name = build_string (user_name); |
35692fe0 | 118 | |
52b14ac0 JB |
119 | /* If the user name claimed in the environment vars differs from |
120 | the real uid, use the claimed name to find the full name. */ | |
35b34f72 | 121 | tem = Fstring_equal (Vuser_login_name, Vuser_real_login_name); |
3415b0e9 RS |
122 | Vuser_full_name = Fuser_full_name (NILP (tem)? make_number (geteuid()) |
123 | : Vuser_login_name); | |
35692fe0 | 124 | |
8f1e2d16 | 125 | p = (unsigned char *) getenv ("NAME"); |
9d36d071 RS |
126 | if (p) |
127 | Vuser_full_name = build_string (p); | |
3347526c RS |
128 | else if (NILP (Vuser_full_name)) |
129 | Vuser_full_name = build_string ("unknown"); | |
35692fe0 JB |
130 | } |
131 | \f | |
132 | DEFUN ("char-to-string", Fchar_to_string, Schar_to_string, 1, 1, 0, | |
5f75e666 | 133 | "Convert arg CHAR to a string containing that character.") |
2591ec64 EN |
134 | (character) |
135 | Lisp_Object character; | |
35692fe0 | 136 | { |
fb8106e8 | 137 | int len; |
d11ba98c | 138 | unsigned char workbuf[4], *str; |
fb8106e8 | 139 | |
2591ec64 | 140 | CHECK_NUMBER (character, 0); |
35692fe0 | 141 | |
fb8106e8 | 142 | len = CHAR_STRING (XFASTINT (character), workbuf, str); |
5f75e666 | 143 | return make_string_from_bytes (str, 1, len); |
35692fe0 JB |
144 | } |
145 | ||
146 | DEFUN ("string-to-char", Fstring_to_char, Sstring_to_char, 1, 1, 0, | |
fb8106e8 KH |
147 | "Convert arg STRING to a character, the first character of that string.\n\ |
148 | A multibyte character is handled correctly.") | |
2591ec64 EN |
149 | (string) |
150 | register Lisp_Object string; | |
35692fe0 JB |
151 | { |
152 | register Lisp_Object val; | |
153 | register struct Lisp_String *p; | |
2591ec64 | 154 | CHECK_STRING (string, 0); |
2591ec64 | 155 | p = XSTRING (string); |
35692fe0 | 156 | if (p->size) |
dc3620af | 157 | XSETFASTINT (val, STRING_CHAR (p->data, STRING_BYTES (p))); |
35692fe0 | 158 | else |
55561c63 | 159 | XSETFASTINT (val, 0); |
35692fe0 JB |
160 | return val; |
161 | } | |
162 | \f | |
163 | static Lisp_Object | |
ec1c14f6 RS |
164 | buildmark (charpos, bytepos) |
165 | int charpos, bytepos; | |
35692fe0 JB |
166 | { |
167 | register Lisp_Object mark; | |
168 | mark = Fmake_marker (); | |
ec1c14f6 | 169 | set_marker_both (mark, Qnil, charpos, bytepos); |
35692fe0 JB |
170 | return mark; |
171 | } | |
172 | ||
173 | DEFUN ("point", Fpoint, Spoint, 0, 0, 0, | |
174 | "Return value of point, as an integer.\n\ | |
175 | Beginning of buffer is position (point-min)") | |
176 | () | |
177 | { | |
178 | Lisp_Object temp; | |
6ec8bbd2 | 179 | XSETFASTINT (temp, PT); |
35692fe0 JB |
180 | return temp; |
181 | } | |
182 | ||
183 | DEFUN ("point-marker", Fpoint_marker, Spoint_marker, 0, 0, 0, | |
184 | "Return value of point, as a marker object.") | |
185 | () | |
186 | { | |
ec1c14f6 | 187 | return buildmark (PT, PT_BYTE); |
35692fe0 JB |
188 | } |
189 | ||
190 | int | |
191 | clip_to_bounds (lower, num, upper) | |
192 | int lower, num, upper; | |
193 | { | |
194 | if (num < lower) | |
195 | return lower; | |
196 | else if (num > upper) | |
197 | return upper; | |
198 | else | |
199 | return num; | |
200 | } | |
201 | ||
202 | DEFUN ("goto-char", Fgoto_char, Sgoto_char, 1, 1, "NGoto char: ", | |
203 | "Set point to POSITION, a number or marker.\n\ | |
fb8106e8 KH |
204 | Beginning of buffer is position (point-min), end is (point-max).\n\ |
205 | If the position is in the middle of a multibyte form,\n\ | |
206 | the actual point is set at the head of the multibyte form\n\ | |
207 | except in the case that `enable-multibyte-characters' is nil.") | |
2591ec64 EN |
208 | (position) |
209 | register Lisp_Object position; | |
35692fe0 | 210 | { |
fb8106e8 KH |
211 | int pos; |
212 | unsigned char *p; | |
213 | ||
72ef82ec RS |
214 | if (MARKERP (position) |
215 | && current_buffer == XMARKER (position)->buffer) | |
ec1c14f6 RS |
216 | { |
217 | pos = marker_position (position); | |
218 | if (pos < BEGV) | |
219 | SET_PT_BOTH (BEGV, BEGV_BYTE); | |
220 | else if (pos > ZV) | |
221 | SET_PT_BOTH (ZV, ZV_BYTE); | |
222 | else | |
223 | SET_PT_BOTH (pos, marker_byte_position (position)); | |
224 | ||
225 | return position; | |
226 | } | |
227 | ||
2591ec64 | 228 | CHECK_NUMBER_COERCE_MARKER (position, 0); |
35692fe0 | 229 | |
fb8106e8 | 230 | pos = clip_to_bounds (BEGV, XINT (position), ZV); |
fb8106e8 | 231 | SET_PT (pos); |
2591ec64 | 232 | return position; |
35692fe0 JB |
233 | } |
234 | ||
235 | static Lisp_Object | |
236 | region_limit (beginningp) | |
237 | int beginningp; | |
238 | { | |
646d9d18 | 239 | extern Lisp_Object Vmark_even_if_inactive; /* Defined in callint.c. */ |
35692fe0 | 240 | register Lisp_Object m; |
c9dd14e1 RM |
241 | if (!NILP (Vtransient_mark_mode) && NILP (Vmark_even_if_inactive) |
242 | && NILP (current_buffer->mark_active)) | |
243 | Fsignal (Qmark_inactive, Qnil); | |
35692fe0 | 244 | m = Fmarker_position (current_buffer->mark); |
56a98455 | 245 | if (NILP (m)) error ("There is no region now"); |
6ec8bbd2 KH |
246 | if ((PT < XFASTINT (m)) == beginningp) |
247 | return (make_number (PT)); | |
35692fe0 JB |
248 | else |
249 | return (m); | |
250 | } | |
251 | ||
252 | DEFUN ("region-beginning", Fregion_beginning, Sregion_beginning, 0, 0, 0, | |
253 | "Return position of beginning of region, as an integer.") | |
254 | () | |
255 | { | |
256 | return (region_limit (1)); | |
257 | } | |
258 | ||
259 | DEFUN ("region-end", Fregion_end, Sregion_end, 0, 0, 0, | |
260 | "Return position of end of region, as an integer.") | |
261 | () | |
262 | { | |
263 | return (region_limit (0)); | |
264 | } | |
265 | ||
35692fe0 JB |
266 | DEFUN ("mark-marker", Fmark_marker, Smark_marker, 0, 0, 0, |
267 | "Return this buffer's mark, as a marker object.\n\ | |
268 | Watch out! Moving this marker changes the mark position.\n\ | |
269 | If you set the marker not to point anywhere, the buffer will have no mark.") | |
270 | () | |
271 | { | |
272 | return current_buffer->mark; | |
273 | } | |
c9ed721d RS |
274 | \f |
275 | DEFUN ("line-beginning-position", Fline_beginning_position, Sline_beginning_position, | |
276 | 0, 1, 0, | |
277 | "Return the character position of the first character on the current line.\n\ | |
278 | With argument N not nil or 1, move forward N - 1 lines first.\n\ | |
279 | If scan reaches end of buffer, return that position.\n\ | |
280 | This function does not move point.") | |
281 | (n) | |
282 | Lisp_Object n; | |
283 | { | |
ec1c14f6 | 284 | register int orig, orig_byte, end; |
c9ed721d RS |
285 | |
286 | if (NILP (n)) | |
287 | XSETFASTINT (n, 1); | |
288 | else | |
289 | CHECK_NUMBER (n, 0); | |
290 | ||
291 | orig = PT; | |
ec1c14f6 | 292 | orig_byte = PT_BYTE; |
c9ed721d RS |
293 | Fforward_line (make_number (XINT (n) - 1)); |
294 | end = PT; | |
ec1c14f6 | 295 | SET_PT_BOTH (orig, orig_byte); |
35692fe0 | 296 | |
c9ed721d RS |
297 | return make_number (end); |
298 | } | |
299 | ||
300 | DEFUN ("line-end-position", Fline_end_position, Sline_end_position, | |
301 | 0, 1, 0, | |
302 | "Return the character position of the last character on the current line.\n\ | |
303 | With argument N not nil or 1, move forward N - 1 lines first.\n\ | |
304 | If scan reaches end of buffer, return that position.\n\ | |
305 | This function does not move point.") | |
306 | (n) | |
307 | Lisp_Object n; | |
308 | { | |
309 | if (NILP (n)) | |
310 | XSETFASTINT (n, 1); | |
311 | else | |
312 | CHECK_NUMBER (n, 0); | |
313 | ||
314 | return make_number (find_before_next_newline | |
315 | (PT, 0, XINT (n) - (XINT (n) <= 0))); | |
316 | } | |
317 | \f | |
35692fe0 JB |
318 | Lisp_Object |
319 | save_excursion_save () | |
320 | { | |
0e2c9c70 JB |
321 | register int visible = (XBUFFER (XWINDOW (selected_window)->buffer) |
322 | == current_buffer); | |
35692fe0 JB |
323 | |
324 | return Fcons (Fpoint_marker (), | |
aea4a109 | 325 | Fcons (Fcopy_marker (current_buffer->mark, Qnil), |
9772455e RS |
326 | Fcons (visible ? Qt : Qnil, |
327 | current_buffer->mark_active))); | |
35692fe0 JB |
328 | } |
329 | ||
330 | Lisp_Object | |
331 | save_excursion_restore (info) | |
4ad8681a | 332 | Lisp_Object info; |
35692fe0 | 333 | { |
4ad8681a RS |
334 | Lisp_Object tem, tem1, omark, nmark; |
335 | struct gcpro gcpro1, gcpro2, gcpro3; | |
35692fe0 JB |
336 | |
337 | tem = Fmarker_buffer (Fcar (info)); | |
338 | /* If buffer being returned to is now deleted, avoid error */ | |
339 | /* Otherwise could get error here while unwinding to top level | |
340 | and crash */ | |
341 | /* In that case, Fmarker_buffer returns nil now. */ | |
56a98455 | 342 | if (NILP (tem)) |
35692fe0 | 343 | return Qnil; |
4ad8681a RS |
344 | |
345 | omark = nmark = Qnil; | |
346 | GCPRO3 (info, omark, nmark); | |
347 | ||
35692fe0 JB |
348 | Fset_buffer (tem); |
349 | tem = Fcar (info); | |
350 | Fgoto_char (tem); | |
351 | unchain_marker (tem); | |
352 | tem = Fcar (Fcdr (info)); | |
03d18690 | 353 | omark = Fmarker_position (current_buffer->mark); |
35692fe0 | 354 | Fset_marker (current_buffer->mark, tem, Fcurrent_buffer ()); |
03d18690 | 355 | nmark = Fmarker_position (tem); |
35692fe0 JB |
356 | unchain_marker (tem); |
357 | tem = Fcdr (Fcdr (info)); | |
ef580991 RS |
358 | #if 0 /* We used to make the current buffer visible in the selected window |
359 | if that was true previously. That avoids some anomalies. | |
360 | But it creates others, and it wasn't documented, and it is simpler | |
361 | and cleaner never to alter the window/buffer connections. */ | |
9772455e RS |
362 | tem1 = Fcar (tem); |
363 | if (!NILP (tem1) | |
0e2c9c70 | 364 | && current_buffer != XBUFFER (XWINDOW (selected_window)->buffer)) |
35692fe0 | 365 | Fswitch_to_buffer (Fcurrent_buffer (), Qnil); |
ef580991 | 366 | #endif /* 0 */ |
9772455e RS |
367 | |
368 | tem1 = current_buffer->mark_active; | |
369 | current_buffer->mark_active = Fcdr (tem); | |
9fed2b18 RS |
370 | if (!NILP (Vrun_hooks)) |
371 | { | |
03d18690 RS |
372 | /* If mark is active now, and either was not active |
373 | or was at a different place, run the activate hook. */ | |
9fed2b18 | 374 | if (! NILP (current_buffer->mark_active)) |
03d18690 RS |
375 | { |
376 | if (! EQ (omark, nmark)) | |
377 | call1 (Vrun_hooks, intern ("activate-mark-hook")); | |
378 | } | |
379 | /* If mark has ceased to be active, run deactivate hook. */ | |
9fed2b18 RS |
380 | else if (! NILP (tem1)) |
381 | call1 (Vrun_hooks, intern ("deactivate-mark-hook")); | |
382 | } | |
4ad8681a | 383 | UNGCPRO; |
35692fe0 JB |
384 | return Qnil; |
385 | } | |
386 | ||
387 | DEFUN ("save-excursion", Fsave_excursion, Ssave_excursion, 0, UNEVALLED, 0, | |
388 | "Save point, mark, and current buffer; execute BODY; restore those things.\n\ | |
389 | Executes BODY just like `progn'.\n\ | |
390 | The values of point, mark and the current buffer are restored\n\ | |
9772455e | 391 | even in case of abnormal exit (throw or error).\n\ |
85cac557 RS |
392 | The state of activation of the mark is also restored.\n\ |
393 | \n\ | |
394 | This construct does not save `deactivate-mark', and therefore\n\ | |
395 | functions that change the buffer will still cause deactivation\n\ | |
396 | of the mark at the end of the command. To prevent that, bind\n\ | |
397 | `deactivate-mark' with `let'.") | |
35692fe0 JB |
398 | (args) |
399 | Lisp_Object args; | |
400 | { | |
401 | register Lisp_Object val; | |
402 | int count = specpdl_ptr - specpdl; | |
403 | ||
404 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
4bc8c7d2 RS |
405 | |
406 | val = Fprogn (args); | |
407 | return unbind_to (count, val); | |
408 | } | |
409 | ||
410 | DEFUN ("save-current-buffer", Fsave_current_buffer, Ssave_current_buffer, 0, UNEVALLED, 0, | |
411 | "Save the current buffer; execute BODY; restore the current buffer.\n\ | |
412 | Executes BODY just like `progn'.") | |
413 | (args) | |
414 | Lisp_Object args; | |
415 | { | |
416 | register Lisp_Object val; | |
417 | int count = specpdl_ptr - specpdl; | |
418 | ||
cb5e5f74 | 419 | record_unwind_protect (set_buffer_if_live, Fcurrent_buffer ()); |
4bc8c7d2 | 420 | |
35692fe0 JB |
421 | val = Fprogn (args); |
422 | return unbind_to (count, val); | |
423 | } | |
424 | \f | |
425 | DEFUN ("buffer-size", Fbufsize, Sbufsize, 0, 0, 0, | |
426 | "Return the number of characters in the current buffer.") | |
427 | () | |
428 | { | |
429 | Lisp_Object temp; | |
55561c63 | 430 | XSETFASTINT (temp, Z - BEG); |
35692fe0 JB |
431 | return temp; |
432 | } | |
433 | ||
434 | DEFUN ("point-min", Fpoint_min, Spoint_min, 0, 0, 0, | |
435 | "Return the minimum permissible value of point in the current buffer.\n\ | |
4c390850 | 436 | This is 1, unless narrowing (a buffer restriction) is in effect.") |
35692fe0 JB |
437 | () |
438 | { | |
439 | Lisp_Object temp; | |
55561c63 | 440 | XSETFASTINT (temp, BEGV); |
35692fe0 JB |
441 | return temp; |
442 | } | |
443 | ||
444 | DEFUN ("point-min-marker", Fpoint_min_marker, Spoint_min_marker, 0, 0, 0, | |
445 | "Return a marker to the minimum permissible value of point in this buffer.\n\ | |
4c390850 | 446 | This is the beginning, unless narrowing (a buffer restriction) is in effect.") |
35692fe0 JB |
447 | () |
448 | { | |
ec1c14f6 | 449 | return buildmark (BEGV, BEGV_BYTE); |
35692fe0 JB |
450 | } |
451 | ||
452 | DEFUN ("point-max", Fpoint_max, Spoint_max, 0, 0, 0, | |
453 | "Return the maximum permissible value of point in the current buffer.\n\ | |
4c390850 RS |
454 | This is (1+ (buffer-size)), unless narrowing (a buffer restriction)\n\ |
455 | is in effect, in which case it is less.") | |
35692fe0 JB |
456 | () |
457 | { | |
458 | Lisp_Object temp; | |
55561c63 | 459 | XSETFASTINT (temp, ZV); |
35692fe0 JB |
460 | return temp; |
461 | } | |
462 | ||
463 | DEFUN ("point-max-marker", Fpoint_max_marker, Spoint_max_marker, 0, 0, 0, | |
464 | "Return a marker to the maximum permissible value of point in this buffer.\n\ | |
4c390850 RS |
465 | This is (1+ (buffer-size)), unless narrowing (a buffer restriction)\n\ |
466 | is in effect, in which case it is less.") | |
35692fe0 JB |
467 | () |
468 | { | |
ec1c14f6 | 469 | return buildmark (ZV, ZV_BYTE); |
35692fe0 JB |
470 | } |
471 | ||
7df74da6 RS |
472 | DEFUN ("position-bytes", Fposition_bytes, Sposition_bytes, 1, 1, 0, |
473 | "Return the byte position for character position POSITION.") | |
474 | (position) | |
80e01f8d | 475 | Lisp_Object position; |
7df74da6 | 476 | { |
fa8a5a15 KH |
477 | CHECK_NUMBER_COERCE_MARKER (position, 1); |
478 | return make_number (CHAR_TO_BYTE (XINT (position))); | |
7df74da6 RS |
479 | } |
480 | \f | |
850a8179 JB |
481 | DEFUN ("following-char", Ffollowing_char, Sfollowing_char, 0, 0, 0, |
482 | "Return the character following point, as a number.\n\ | |
fb8106e8 KH |
483 | At the end of the buffer or accessible region, return 0.\n\ |
484 | If `enable-multibyte-characters' is nil or point is not\n\ | |
485 | at character boundary, multibyte form is ignored,\n\ | |
486 | and only one byte following point is returned as a character.") | |
35692fe0 JB |
487 | () |
488 | { | |
489 | Lisp_Object temp; | |
6ec8bbd2 | 490 | if (PT >= ZV) |
55561c63 | 491 | XSETFASTINT (temp, 0); |
850a8179 | 492 | else |
ec1c14f6 | 493 | XSETFASTINT (temp, FETCH_CHAR (PT_BYTE)); |
35692fe0 JB |
494 | return temp; |
495 | } | |
496 | ||
850a8179 JB |
497 | DEFUN ("preceding-char", Fprevious_char, Sprevious_char, 0, 0, 0, |
498 | "Return the character preceding point, as a number.\n\ | |
fb8106e8 KH |
499 | At the beginning of the buffer or accessible region, return 0.\n\ |
500 | If `enable-multibyte-characters' is nil or point is not\n\ | |
501 | at character boundary, multi-byte form is ignored,\n\ | |
502 | and only one byte preceding point is returned as a character.") | |
35692fe0 JB |
503 | () |
504 | { | |
505 | Lisp_Object temp; | |
6ec8bbd2 | 506 | if (PT <= BEGV) |
55561c63 | 507 | XSETFASTINT (temp, 0); |
fb8106e8 KH |
508 | else if (!NILP (current_buffer->enable_multibyte_characters)) |
509 | { | |
ec1c14f6 | 510 | int pos = PT_BYTE; |
fb8106e8 KH |
511 | DEC_POS (pos); |
512 | XSETFASTINT (temp, FETCH_CHAR (pos)); | |
513 | } | |
35692fe0 | 514 | else |
ec1c14f6 | 515 | XSETFASTINT (temp, FETCH_BYTE (PT_BYTE - 1)); |
35692fe0 JB |
516 | return temp; |
517 | } | |
518 | ||
519 | DEFUN ("bobp", Fbobp, Sbobp, 0, 0, 0, | |
ec1c14f6 | 520 | "Return t if point is at the beginning of the buffer.\n\ |
35692fe0 JB |
521 | If the buffer is narrowed, this means the beginning of the narrowed part.") |
522 | () | |
523 | { | |
6ec8bbd2 | 524 | if (PT == BEGV) |
35692fe0 JB |
525 | return Qt; |
526 | return Qnil; | |
527 | } | |
528 | ||
529 | DEFUN ("eobp", Feobp, Seobp, 0, 0, 0, | |
ec1c14f6 | 530 | "Return t if point is at the end of the buffer.\n\ |
35692fe0 JB |
531 | If the buffer is narrowed, this means the end of the narrowed part.") |
532 | () | |
533 | { | |
6ec8bbd2 | 534 | if (PT == ZV) |
35692fe0 JB |
535 | return Qt; |
536 | return Qnil; | |
537 | } | |
538 | ||
539 | DEFUN ("bolp", Fbolp, Sbolp, 0, 0, 0, | |
ec1c14f6 | 540 | "Return t if point is at the beginning of a line.") |
35692fe0 JB |
541 | () |
542 | { | |
ec1c14f6 | 543 | if (PT == BEGV || FETCH_BYTE (PT_BYTE - 1) == '\n') |
35692fe0 JB |
544 | return Qt; |
545 | return Qnil; | |
546 | } | |
547 | ||
548 | DEFUN ("eolp", Feolp, Seolp, 0, 0, 0, | |
ec1c14f6 | 549 | "Return t if point is at the end of a line.\n\ |
35692fe0 JB |
550 | `End of a line' includes point being at the end of the buffer.") |
551 | () | |
552 | { | |
ec1c14f6 | 553 | if (PT == ZV || FETCH_BYTE (PT_BYTE) == '\n') |
35692fe0 JB |
554 | return Qt; |
555 | return Qnil; | |
556 | } | |
557 | ||
fa1d3816 | 558 | DEFUN ("char-after", Fchar_after, Schar_after, 0, 1, 0, |
35692fe0 JB |
559 | "Return character in current buffer at position POS.\n\ |
560 | POS is an integer or a buffer pointer.\n\ | |
fb8106e8 KH |
561 | If POS is out of range, the value is nil.\n\ |
562 | If `enable-multibyte-characters' is nil or POS is not at character boundary,\n\ | |
563 | multi-byte form is ignored, and only one byte at POS\n\ | |
564 | is returned as a character.") | |
35692fe0 JB |
565 | (pos) |
566 | Lisp_Object pos; | |
567 | { | |
ec1c14f6 | 568 | register int pos_byte; |
35692fe0 | 569 | register Lisp_Object val; |
35692fe0 | 570 | |
fa1d3816 | 571 | if (NILP (pos)) |
85cac557 RS |
572 | pos_byte = PT_BYTE; |
573 | else if (MARKERP (pos)) | |
574 | { | |
575 | pos_byte = marker_byte_position (pos); | |
576 | if (pos_byte < BEGV_BYTE || pos_byte >= ZV_BYTE) | |
577 | return Qnil; | |
578 | } | |
fa1d3816 RS |
579 | else |
580 | { | |
581 | CHECK_NUMBER_COERCE_MARKER (pos, 0); | |
b98ef0dc | 582 | if (XINT (pos) < BEGV || XINT (pos) >= ZV) |
85cac557 | 583 | return Qnil; |
ec1c14f6 RS |
584 | |
585 | pos_byte = CHAR_TO_BYTE (XINT (pos)); | |
fa1d3816 | 586 | } |
35692fe0 | 587 | |
ec1c14f6 | 588 | return make_number (FETCH_CHAR (pos_byte)); |
35692fe0 | 589 | } |
fb8106e8 | 590 | |
fa1d3816 | 591 | DEFUN ("char-before", Fchar_before, Schar_before, 0, 1, 0, |
fb8106e8 KH |
592 | "Return character in current buffer preceding position POS.\n\ |
593 | POS is an integer or a buffer pointer.\n\ | |
594 | If POS is out of range, the value is nil.\n\ | |
595 | If `enable-multibyte-characters' is nil or POS is not at character boundary,\n\ | |
596 | multi-byte form is ignored, and only one byte preceding POS\n\ | |
597 | is returned as a character.") | |
598 | (pos) | |
599 | Lisp_Object pos; | |
600 | { | |
601 | register Lisp_Object val; | |
ec1c14f6 | 602 | register int pos_byte; |
fb8106e8 | 603 | |
fa1d3816 | 604 | if (NILP (pos)) |
ec1c14f6 RS |
605 | pos_byte = PT_BYTE; |
606 | else if (MARKERP (pos)) | |
85cac557 RS |
607 | { |
608 | pos_byte = marker_byte_position (pos); | |
609 | ||
610 | if (pos_byte <= BEGV_BYTE || pos_byte > ZV_BYTE) | |
611 | return Qnil; | |
612 | } | |
fa1d3816 RS |
613 | else |
614 | { | |
615 | CHECK_NUMBER_COERCE_MARKER (pos, 0); | |
fb8106e8 | 616 | |
b98ef0dc | 617 | if (XINT (pos) <= BEGV || XINT (pos) > ZV) |
85cac557 RS |
618 | return Qnil; |
619 | ||
ec1c14f6 | 620 | pos_byte = CHAR_TO_BYTE (XINT (pos)); |
fa1d3816 | 621 | } |
fb8106e8 KH |
622 | |
623 | if (!NILP (current_buffer->enable_multibyte_characters)) | |
624 | { | |
ec1c14f6 RS |
625 | DEC_POS (pos_byte); |
626 | XSETFASTINT (val, FETCH_CHAR (pos_byte)); | |
fb8106e8 KH |
627 | } |
628 | else | |
629 | { | |
ec1c14f6 RS |
630 | pos_byte--; |
631 | XSETFASTINT (val, FETCH_BYTE (pos_byte)); | |
fb8106e8 KH |
632 | } |
633 | return val; | |
634 | } | |
35692fe0 | 635 | \f |
87485d6f | 636 | DEFUN ("user-login-name", Fuser_login_name, Suser_login_name, 0, 1, 0, |
35692fe0 JB |
637 | "Return the name under which the user logged in, as a string.\n\ |
638 | This is based on the effective uid, not the real uid.\n\ | |
2c9ae24e | 639 | Also, if the environment variable LOGNAME or USER is set,\n\ |
87485d6f MW |
640 | that determines the value of this function.\n\n\ |
641 | If optional argument UID is an integer, return the login name of the user\n\ | |
642 | with that uid, or nil if there is no such user.") | |
643 | (uid) | |
644 | Lisp_Object uid; | |
35692fe0 | 645 | { |
87485d6f MW |
646 | struct passwd *pw; |
647 | ||
f8a0e364 RS |
648 | /* Set up the user name info if we didn't do it before. |
649 | (That can happen if Emacs is dumpable | |
650 | but you decide to run `temacs -l loadup' and not dump. */ | |
35b34f72 | 651 | if (INTEGERP (Vuser_login_name)) |
f8a0e364 | 652 | init_editfns (); |
87485d6f MW |
653 | |
654 | if (NILP (uid)) | |
35b34f72 | 655 | return Vuser_login_name; |
87485d6f MW |
656 | |
657 | CHECK_NUMBER (uid, 0); | |
658 | pw = (struct passwd *) getpwuid (XINT (uid)); | |
659 | return (pw ? build_string (pw->pw_name) : Qnil); | |
35692fe0 JB |
660 | } |
661 | ||
662 | DEFUN ("user-real-login-name", Fuser_real_login_name, Suser_real_login_name, | |
663 | 0, 0, 0, | |
664 | "Return the name of the user's real uid, as a string.\n\ | |
9658bdd0 | 665 | This ignores the environment variables LOGNAME and USER, so it differs from\n\ |
b1da234a | 666 | `user-login-name' when running under `su'.") |
35692fe0 JB |
667 | () |
668 | { | |
f8a0e364 RS |
669 | /* Set up the user name info if we didn't do it before. |
670 | (That can happen if Emacs is dumpable | |
671 | but you decide to run `temacs -l loadup' and not dump. */ | |
35b34f72 | 672 | if (INTEGERP (Vuser_login_name)) |
f8a0e364 | 673 | init_editfns (); |
35b34f72 | 674 | return Vuser_real_login_name; |
35692fe0 JB |
675 | } |
676 | ||
677 | DEFUN ("user-uid", Fuser_uid, Suser_uid, 0, 0, 0, | |
678 | "Return the effective uid of Emacs, as an integer.") | |
679 | () | |
680 | { | |
681 | return make_number (geteuid ()); | |
682 | } | |
683 | ||
684 | DEFUN ("user-real-uid", Fuser_real_uid, Suser_real_uid, 0, 0, 0, | |
685 | "Return the real uid of Emacs, as an integer.") | |
686 | () | |
687 | { | |
688 | return make_number (getuid ()); | |
689 | } | |
690 | ||
c9ed721d RS |
691 | DEFUN ("user-full-name", Fuser_full_name, Suser_full_name, 0, 1, 0, |
692 | "Return the full name of the user logged in, as a string.\n\ | |
693 | If optional argument UID is an integer, return the full name of the user\n\ | |
ca38bbb2 | 694 | with that uid, or \"unknown\" if there is no such user.\n\ |
3415b0e9 RS |
695 | If UID is a string, return the full name of the user with that login\n\ |
696 | name, or \"unknown\" if no such user could be found.") | |
c9ed721d RS |
697 | (uid) |
698 | Lisp_Object uid; | |
35692fe0 | 699 | { |
c9ed721d | 700 | struct passwd *pw; |
b0e92acd | 701 | register unsigned char *p, *q; |
3415b0e9 RS |
702 | extern char *index (); |
703 | Lisp_Object full; | |
c9ed721d RS |
704 | |
705 | if (NILP (uid)) | |
3415b0e9 RS |
706 | return Vuser_full_name; |
707 | else if (NUMBERP (uid)) | |
708 | pw = (struct passwd *) getpwuid (XINT (uid)); | |
709 | else if (STRINGP (uid)) | |
710 | pw = (struct passwd *) getpwnam (XSTRING (uid)->data); | |
711 | else | |
712 | error ("Invalid UID specification"); | |
c9ed721d | 713 | |
3415b0e9 | 714 | if (!pw) |
3347526c | 715 | return Qnil; |
3415b0e9 RS |
716 | |
717 | p = (unsigned char *) USER_FULL_NAME; | |
718 | /* Chop off everything after the first comma. */ | |
719 | q = (unsigned char *) index (p, ','); | |
720 | full = make_string (p, q ? q - p : strlen (p)); | |
721 | ||
722 | #ifdef AMPERSAND_FULL_NAME | |
723 | p = XSTRING (full)->data; | |
724 | q = (unsigned char *) index (p, '&'); | |
725 | /* Substitute the login name for the &, upcasing the first character. */ | |
726 | if (q) | |
727 | { | |
b0e92acd | 728 | register unsigned char *r; |
3415b0e9 RS |
729 | Lisp_Object login; |
730 | ||
731 | login = Fuser_login_name (make_number (pw->pw_uid)); | |
732 | r = (unsigned char *) alloca (strlen (p) + XSTRING (login)->size + 1); | |
733 | bcopy (p, r, q - p); | |
734 | r[q - p] = 0; | |
735 | strcat (r, XSTRING (login)->data); | |
736 | r[q - p] = UPCASE (r[q - p]); | |
737 | strcat (r, q + 1); | |
738 | full = build_string (r); | |
739 | } | |
740 | #endif /* AMPERSAND_FULL_NAME */ | |
741 | ||
742 | return full; | |
35692fe0 JB |
743 | } |
744 | ||
745 | DEFUN ("system-name", Fsystem_name, Ssystem_name, 0, 0, 0, | |
746 | "Return the name of the machine you are running on, as a string.") | |
747 | () | |
748 | { | |
749 | return Vsystem_name; | |
750 | } | |
751 | ||
ac988277 KH |
752 | /* For the benefit of callers who don't want to include lisp.h */ |
753 | char * | |
754 | get_system_name () | |
755 | { | |
3d976a9a RS |
756 | if (STRINGP (Vsystem_name)) |
757 | return (char *) XSTRING (Vsystem_name)->data; | |
758 | else | |
759 | return ""; | |
ac988277 KH |
760 | } |
761 | ||
7fd233b3 RS |
762 | DEFUN ("emacs-pid", Femacs_pid, Semacs_pid, 0, 0, 0, |
763 | "Return the process ID of Emacs, as an integer.") | |
764 | () | |
765 | { | |
766 | return make_number (getpid ()); | |
767 | } | |
768 | ||
d940e0e4 | 769 | DEFUN ("current-time", Fcurrent_time, Scurrent_time, 0, 0, 0, |
e983fdb2 | 770 | "Return the current time, as the number of seconds since 1970-01-01 00:00:00.\n\ |
956ace37 JB |
771 | The time is returned as a list of three integers. The first has the\n\ |
772 | most significant 16 bits of the seconds, while the second has the\n\ | |
773 | least significant 16 bits. The third integer gives the microsecond\n\ | |
774 | count.\n\ | |
775 | \n\ | |
776 | The microsecond count is zero on systems that do not provide\n\ | |
777 | resolution finer than a second.") | |
d940e0e4 JB |
778 | () |
779 | { | |
956ace37 JB |
780 | EMACS_TIME t; |
781 | Lisp_Object result[3]; | |
782 | ||
783 | EMACS_GET_TIME (t); | |
d2fd0445 KH |
784 | XSETINT (result[0], (EMACS_SECS (t) >> 16) & 0xffff); |
785 | XSETINT (result[1], (EMACS_SECS (t) >> 0) & 0xffff); | |
786 | XSETINT (result[2], EMACS_USECS (t)); | |
956ace37 JB |
787 | |
788 | return Flist (3, result); | |
d940e0e4 JB |
789 | } |
790 | \f | |
791 | ||
e3120ab5 JB |
792 | static int |
793 | lisp_time_argument (specified_time, result) | |
794 | Lisp_Object specified_time; | |
795 | time_t *result; | |
796 | { | |
797 | if (NILP (specified_time)) | |
798 | return time (result) != -1; | |
799 | else | |
800 | { | |
801 | Lisp_Object high, low; | |
802 | high = Fcar (specified_time); | |
803 | CHECK_NUMBER (high, 0); | |
804 | low = Fcdr (specified_time); | |
ae683129 | 805 | if (CONSP (low)) |
e3120ab5 JB |
806 | low = Fcar (low); |
807 | CHECK_NUMBER (low, 0); | |
808 | *result = (XINT (high) << 16) + (XINT (low) & 0xffff); | |
809 | return *result >> 16 == XINT (high); | |
810 | } | |
811 | } | |
812 | ||
3efcc98a | 813 | /* |
b48382a0 RS |
814 | DEFUN ("format-time-string", Fformat_time_string, Sformat_time_string, 1, 3, 0, |
815 | "Use FORMAT-STRING to format the time TIME, or now if omitted.\n\ | |
816 | TIME is specified as (HIGH LOW . IGNORED) or (HIGH . LOW), as returned by\n\ | |
817 | `current-time' or `file-attributes'.\n\ | |
818 | The third, optional, argument UNIVERSAL, if non-nil, means describe TIME\n\ | |
819 | as Universal Time; nil means describe TIME in the local time zone.\n\ | |
820 | The value is a copy of FORMAT-STRING, but with certain constructs replaced\n\ | |
821 | by text that describes the specified date and time in TIME:\n\ | |
a82d387c | 822 | \n\ |
b48382a0 RS |
823 | %Y is the year, %y within the century, %C the century.\n\ |
824 | %G is the year corresponding to the ISO week, %g within the century.\n\ | |
b771d0da PE |
825 | %m is the numeric month.\n\ |
826 | %b and %h are the locale's abbreviated month name, %B the full name.\n\ | |
b48382a0 RS |
827 | %d is the day of the month, zero-padded, %e is blank-padded.\n\ |
828 | %u is the numeric day of week from 1 (Monday) to 7, %w from 0 (Sunday) to 6.\n\ | |
b771d0da | 829 | %a is the locale's abbreviated name of the day of week, %A the full name.\n\ |
b48382a0 RS |
830 | %U is the week number starting on Sunday, %W starting on Monday,\n\ |
831 | %V according to ISO 8601.\n\ | |
832 | %j is the day of the year.\n\ | |
833 | \n\ | |
834 | %H is the hour on a 24-hour clock, %I is on a 12-hour clock, %k is like %H\n\ | |
835 | only blank-padded, %l is like %I blank-padded.\n\ | |
b771d0da | 836 | %p is the locale's equivalent of either AM or PM.\n\ |
b48382a0 RS |
837 | %M is the minute.\n\ |
838 | %S is the second.\n\ | |
839 | %Z is the time zone name, %z is the numeric form.\n\ | |
840 | %s is the number of seconds since 1970-01-01 00:00:00 +0000.\n\ | |
841 | \n\ | |
842 | %c is the locale's date and time format.\n\ | |
843 | %x is the locale's \"preferred\" date format.\n\ | |
844 | %D is like \"%m/%d/%y\".\n\ | |
845 | \n\ | |
846 | %R is like \"%H:%M\", %T is like \"%H:%M:%S\", %r is like \"%I:%M:%S %p\".\n\ | |
847 | %X is the locale's \"preferred\" time format.\n\ | |
848 | \n\ | |
b771d0da | 849 | Finally, %n is a newline, %t is a tab, %% is a literal %.\n\ |
b48382a0 | 850 | \n\ |
3efcc98a | 851 | Certain flags and modifiers are available with some format controls.\n\ |
b48382a0 RS |
852 | The flags are `_' and `-'. For certain characters X, %_X is like %X,\n\ |
853 | but padded with blanks; %-X is like %X, but without padding.\n\ | |
854 | %NX (where N stands for an integer) is like %X,\n\ | |
855 | but takes up at least N (a number) positions.\n\ | |
856 | The modifiers are `E' and `O'. For certain characters X,\n\ | |
857 | %EX is a locale's alternative version of %X;\n\ | |
858 | %OX is like %X, but uses the locale's number symbols.\n\ | |
859 | \n\ | |
860 | For example, to produce full ISO 8601 format, use \"%Y-%m-%dT%T%z\".") | |
726ed0da | 861 | (format_string, time, universal) |
3efcc98a RS |
862 | */ |
863 | ||
864 | DEFUN ("format-time-string", Fformat_time_string, Sformat_time_string, 1, 3, 0, | |
865 | 0 /* See immediately above */) | |
b48382a0 RS |
866 | (format_string, time, universal) |
867 | Lisp_Object format_string, time, universal; | |
a82d387c RS |
868 | { |
869 | time_t value; | |
870 | int size; | |
871 | ||
872 | CHECK_STRING (format_string, 1); | |
873 | ||
874 | if (! lisp_time_argument (time, &value)) | |
875 | error ("Invalid time specification"); | |
876 | ||
877 | /* This is probably enough. */ | |
dc3620af | 878 | size = STRING_BYTES (XSTRING (format_string)) * 6 + 50; |
a82d387c RS |
879 | |
880 | while (1) | |
881 | { | |
b48382a0 RS |
882 | char *buf = (char *) alloca (size + 1); |
883 | int result; | |
884 | ||
bfbcc5ee | 885 | buf[0] = '\1'; |
b48382a0 RS |
886 | result = emacs_strftime (buf, size, XSTRING (format_string)->data, |
887 | (NILP (universal) ? localtime (&value) | |
888 | : gmtime (&value))); | |
bfbcc5ee | 889 | if ((result > 0 && result < size) || (result == 0 && buf[0] == '\0')) |
a82d387c | 890 | return build_string (buf); |
b48382a0 RS |
891 | |
892 | /* If buffer was too small, make it bigger and try again. */ | |
bfbcc5ee | 893 | result = emacs_strftime (NULL, 0x7fffffff, XSTRING (format_string)->data, |
b48382a0 RS |
894 | (NILP (universal) ? localtime (&value) |
895 | : gmtime (&value))); | |
896 | size = result + 1; | |
a82d387c RS |
897 | } |
898 | } | |
899 | ||
4691c06d RS |
900 | DEFUN ("decode-time", Fdecode_time, Sdecode_time, 0, 1, 0, |
901 | "Decode a time value as (SEC MINUTE HOUR DAY MONTH YEAR DOW DST ZONE).\n\ | |
902 | The optional SPECIFIED-TIME should be a list of (HIGH LOW . IGNORED)\n\ | |
903 | or (HIGH . LOW), as from `current-time' and `file-attributes', or `nil'\n\ | |
904 | to use the current time. The list has the following nine members:\n\ | |
145b0681 RS |
905 | SEC is an integer between 0 and 60; SEC is 60 for a leap second, which\n\ |
906 | only some operating systems support. MINUTE is an integer between 0 and 59.\n\ | |
4691c06d RS |
907 | HOUR is an integer between 0 and 23. DAY is an integer between 1 and 31.\n\ |
908 | MONTH is an integer between 1 and 12. YEAR is an integer indicating the\n\ | |
909 | four-digit year. DOW is the day of week, an integer between 0 and 6, where\n\ | |
910 | 0 is Sunday. DST is t if daylight savings time is effect, otherwise nil.\n\ | |
911 | ZONE is an integer indicating the number of seconds east of Greenwich.\n\ | |
2c6c7c72 | 912 | \(Note that Common Lisp has different meanings for DOW and ZONE.)") |
4691c06d RS |
913 | (specified_time) |
914 | Lisp_Object specified_time; | |
915 | { | |
916 | time_t time_spec; | |
3c887943 | 917 | struct tm save_tm; |
4691c06d RS |
918 | struct tm *decoded_time; |
919 | Lisp_Object list_args[9]; | |
920 | ||
921 | if (! lisp_time_argument (specified_time, &time_spec)) | |
922 | error ("Invalid time specification"); | |
923 | ||
924 | decoded_time = localtime (&time_spec); | |
3c887943 KH |
925 | XSETFASTINT (list_args[0], decoded_time->tm_sec); |
926 | XSETFASTINT (list_args[1], decoded_time->tm_min); | |
927 | XSETFASTINT (list_args[2], decoded_time->tm_hour); | |
928 | XSETFASTINT (list_args[3], decoded_time->tm_mday); | |
929 | XSETFASTINT (list_args[4], decoded_time->tm_mon + 1); | |
236ebf35 | 930 | XSETINT (list_args[5], decoded_time->tm_year + 1900); |
3c887943 | 931 | XSETFASTINT (list_args[6], decoded_time->tm_wday); |
4691c06d | 932 | list_args[7] = (decoded_time->tm_isdst)? Qt : Qnil; |
3c887943 KH |
933 | |
934 | /* Make a copy, in case gmtime modifies the struct. */ | |
935 | save_tm = *decoded_time; | |
936 | decoded_time = gmtime (&time_spec); | |
937 | if (decoded_time == 0) | |
938 | list_args[8] = Qnil; | |
939 | else | |
94751666 | 940 | XSETINT (list_args[8], tm_diff (&save_tm, decoded_time)); |
4691c06d RS |
941 | return Flist (9, list_args); |
942 | } | |
943 | ||
6ee9061c | 944 | DEFUN ("encode-time", Fencode_time, Sencode_time, 6, MANY, 0, |
2591ec64 | 945 | "Convert SECOND, MINUTE, HOUR, DAY, MONTH, YEAR and ZONE to internal time.\n\ |
6ee9061c RS |
946 | This is the reverse operation of `decode-time', which see.\n\ |
947 | ZONE defaults to the current time zone rule. This can\n\ | |
085e9fcb | 948 | be a string or t (as from `set-time-zone-rule'), or it can be a list\n\ |
7459d65b | 949 | \(as from `current-time-zone') or an integer (as from `decode-time')\n\ |
c59b5089 | 950 | applied without consideration for daylight savings time.\n\ |
6ee9061c RS |
951 | \n\ |
952 | You can pass more than 7 arguments; then the first six arguments\n\ | |
953 | are used as SECOND through YEAR, and the *last* argument is used as ZONE.\n\ | |
954 | The intervening arguments are ignored.\n\ | |
955 | This feature lets (apply 'encode-time (decode-time ...)) work.\n\ | |
956 | \n\ | |
c59b5089 PE |
957 | Out-of-range values for SEC, MINUTE, HOUR, DAY, or MONTH are allowed;\n\ |
958 | for example, a DAY of 0 means the day preceding the given month.\n\ | |
01ba8cce | 959 | Year numbers less than 100 are treated just like other year numbers.\n\ |
c59b5089 | 960 | If you want them to stand for years in this century, you must do that yourself.") |
6ee9061c RS |
961 | (nargs, args) |
962 | int nargs; | |
963 | register Lisp_Object *args; | |
cce7b8a0 | 964 | { |
1b8fa736 | 965 | time_t time; |
c59b5089 | 966 | struct tm tm; |
60653898 | 967 | Lisp_Object zone = (nargs > 6 ? args[nargs - 1] : Qnil); |
6ee9061c RS |
968 | |
969 | CHECK_NUMBER (args[0], 0); /* second */ | |
970 | CHECK_NUMBER (args[1], 1); /* minute */ | |
971 | CHECK_NUMBER (args[2], 2); /* hour */ | |
972 | CHECK_NUMBER (args[3], 3); /* day */ | |
973 | CHECK_NUMBER (args[4], 4); /* month */ | |
974 | CHECK_NUMBER (args[5], 5); /* year */ | |
975 | ||
976 | tm.tm_sec = XINT (args[0]); | |
977 | tm.tm_min = XINT (args[1]); | |
978 | tm.tm_hour = XINT (args[2]); | |
979 | tm.tm_mday = XINT (args[3]); | |
980 | tm.tm_mon = XINT (args[4]) - 1; | |
981 | tm.tm_year = XINT (args[5]) - 1900; | |
c59b5089 PE |
982 | tm.tm_isdst = -1; |
983 | ||
984 | if (CONSP (zone)) | |
985 | zone = Fcar (zone); | |
1b8fa736 | 986 | if (NILP (zone)) |
c59b5089 PE |
987 | time = mktime (&tm); |
988 | else | |
1b8fa736 | 989 | { |
c59b5089 PE |
990 | char tzbuf[100]; |
991 | char *tzstring; | |
992 | char **oldenv = environ, **newenv; | |
993 | ||
2e34157c | 994 | if (EQ (zone, Qt)) |
085e9fcb EN |
995 | tzstring = "UTC0"; |
996 | else if (STRINGP (zone)) | |
4d4c1514 | 997 | tzstring = (char *) XSTRING (zone)->data; |
c59b5089 | 998 | else if (INTEGERP (zone)) |
1b8fa736 | 999 | { |
c59b5089 PE |
1000 | int abszone = abs (XINT (zone)); |
1001 | sprintf (tzbuf, "XXX%s%d:%02d:%02d", "-" + (XINT (zone) < 0), | |
1002 | abszone / (60*60), (abszone/60) % 60, abszone % 60); | |
1003 | tzstring = tzbuf; | |
1b8fa736 | 1004 | } |
c59b5089 PE |
1005 | else |
1006 | error ("Invalid time zone specification"); | |
1007 | ||
1008 | /* Set TZ before calling mktime; merely adjusting mktime's returned | |
1009 | value doesn't suffice, since that would mishandle leap seconds. */ | |
1010 | set_time_zone_rule (tzstring); | |
1011 | ||
1012 | time = mktime (&tm); | |
1013 | ||
1014 | /* Restore TZ to previous value. */ | |
1015 | newenv = environ; | |
1016 | environ = oldenv; | |
c0efcacf | 1017 | xfree (newenv); |
c59b5089 PE |
1018 | #ifdef LOCALTIME_CACHE |
1019 | tzset (); | |
1020 | #endif | |
1b8fa736 | 1021 | } |
1b8fa736 | 1022 | |
c59b5089 PE |
1023 | if (time == (time_t) -1) |
1024 | error ("Specified time is not representable"); | |
1025 | ||
1026 | return make_time (time); | |
cce7b8a0 RS |
1027 | } |
1028 | ||
2148f2b4 | 1029 | DEFUN ("current-time-string", Fcurrent_time_string, Scurrent_time_string, 0, 1, 0, |
35692fe0 | 1030 | "Return the current time, as a human-readable string.\n\ |
2148f2b4 RS |
1031 | Programs can use this function to decode a time,\n\ |
1032 | since the number of columns in each field is fixed.\n\ | |
1033 | The format is `Sun Sep 16 01:03:52 1973'.\n\ | |
7a8630da RS |
1034 | However, see also the functions `decode-time' and `format-time-string'\n\ |
1035 | which provide a much more powerful and general facility.\n\ | |
1036 | \n\ | |
2148f2b4 RS |
1037 | If an argument is given, it specifies a time to format\n\ |
1038 | instead of the current time. The argument should have the form:\n\ | |
1039 | (HIGH . LOW)\n\ | |
1040 | or the form:\n\ | |
1041 | (HIGH LOW . IGNORED).\n\ | |
1042 | Thus, you can use times obtained from `current-time'\n\ | |
1043 | and from `file-attributes'.") | |
1044 | (specified_time) | |
1045 | Lisp_Object specified_time; | |
1046 | { | |
e3120ab5 | 1047 | time_t value; |
35692fe0 | 1048 | char buf[30]; |
2148f2b4 RS |
1049 | register char *tem; |
1050 | ||
e3120ab5 JB |
1051 | if (! lisp_time_argument (specified_time, &value)) |
1052 | value = -1; | |
2148f2b4 | 1053 | tem = (char *) ctime (&value); |
35692fe0 JB |
1054 | |
1055 | strncpy (buf, tem, 24); | |
1056 | buf[24] = 0; | |
1057 | ||
1058 | return build_string (buf); | |
1059 | } | |
c2662aea | 1060 | |
94751666 | 1061 | #define TM_YEAR_BASE 1900 |
e3120ab5 | 1062 | |
94751666 PE |
1063 | /* Yield A - B, measured in seconds. |
1064 | This function is copied from the GNU C Library. */ | |
1065 | static int | |
1066 | tm_diff (a, b) | |
e3120ab5 JB |
1067 | struct tm *a, *b; |
1068 | { | |
94751666 PE |
1069 | /* Compute intervening leap days correctly even if year is negative. |
1070 | Take care to avoid int overflow in leap day calculations, | |
1071 | but it's OK to assume that A and B are close to each other. */ | |
1072 | int a4 = (a->tm_year >> 2) + (TM_YEAR_BASE >> 2) - ! (a->tm_year & 3); | |
1073 | int b4 = (b->tm_year >> 2) + (TM_YEAR_BASE >> 2) - ! (b->tm_year & 3); | |
1074 | int a100 = a4 / 25 - (a4 % 25 < 0); | |
1075 | int b100 = b4 / 25 - (b4 % 25 < 0); | |
1076 | int a400 = a100 >> 2; | |
1077 | int b400 = b100 >> 2; | |
1078 | int intervening_leap_days = (a4 - b4) - (a100 - b100) + (a400 - b400); | |
1079 | int years = a->tm_year - b->tm_year; | |
1080 | int days = (365 * years + intervening_leap_days | |
1081 | + (a->tm_yday - b->tm_yday)); | |
1082 | return (60 * (60 * (24 * days + (a->tm_hour - b->tm_hour)) | |
1083 | + (a->tm_min - b->tm_min)) | |
8e718b4e | 1084 | + (a->tm_sec - b->tm_sec)); |
e3120ab5 JB |
1085 | } |
1086 | ||
1087 | DEFUN ("current-time-zone", Fcurrent_time_zone, Scurrent_time_zone, 0, 1, 0, | |
1088 | "Return the offset and name for the local time zone.\n\ | |
1089 | This returns a list of the form (OFFSET NAME).\n\ | |
1090 | OFFSET is an integer number of seconds ahead of UTC (east of Greenwich).\n\ | |
1091 | A negative value means west of Greenwich.\n\ | |
1092 | NAME is a string giving the name of the time zone.\n\ | |
1093 | If an argument is given, it specifies when the time zone offset is determined\n\ | |
1094 | instead of using the current time. The argument should have the form:\n\ | |
1095 | (HIGH . LOW)\n\ | |
1096 | or the form:\n\ | |
1097 | (HIGH LOW . IGNORED).\n\ | |
1098 | Thus, you can use times obtained from `current-time'\n\ | |
1099 | and from `file-attributes'.\n\ | |
773c1fd3 JB |
1100 | \n\ |
1101 | Some operating systems cannot provide all this information to Emacs;\n\ | |
2d88f747 | 1102 | in this case, `current-time-zone' returns a list containing nil for\n\ |
773c1fd3 | 1103 | the data it can't find.") |
e3120ab5 JB |
1104 | (specified_time) |
1105 | Lisp_Object specified_time; | |
c2662aea | 1106 | { |
e3120ab5 JB |
1107 | time_t value; |
1108 | struct tm *t; | |
c2662aea | 1109 | |
e3120ab5 | 1110 | if (lisp_time_argument (specified_time, &value) |
2d88f747 | 1111 | && (t = gmtime (&value)) != 0) |
e3120ab5 | 1112 | { |
2d88f747 | 1113 | struct tm gmt; |
94751666 | 1114 | int offset; |
e3120ab5 | 1115 | char *s, buf[6]; |
2d88f747 RS |
1116 | |
1117 | gmt = *t; /* Make a copy, in case localtime modifies *t. */ | |
1118 | t = localtime (&value); | |
94751666 | 1119 | offset = tm_diff (t, &gmt); |
e3120ab5 JB |
1120 | s = 0; |
1121 | #ifdef HAVE_TM_ZONE | |
1122 | if (t->tm_zone) | |
5fd4de15 | 1123 | s = (char *)t->tm_zone; |
a7971c39 RS |
1124 | #else /* not HAVE_TM_ZONE */ |
1125 | #ifdef HAVE_TZNAME | |
1126 | if (t->tm_isdst == 0 || t->tm_isdst == 1) | |
1127 | s = tzname[t->tm_isdst]; | |
c2662aea | 1128 | #endif |
a7971c39 | 1129 | #endif /* not HAVE_TM_ZONE */ |
e3120ab5 JB |
1130 | if (!s) |
1131 | { | |
1132 | /* No local time zone name is available; use "+-NNNN" instead. */ | |
00fc94d0 | 1133 | int am = (offset < 0 ? -offset : offset) / 60; |
e3120ab5 JB |
1134 | sprintf (buf, "%c%02d%02d", (offset < 0 ? '-' : '+'), am/60, am%60); |
1135 | s = buf; | |
1136 | } | |
1137 | return Fcons (make_number (offset), Fcons (build_string (s), Qnil)); | |
1138 | } | |
1139 | else | |
09dbcf71 | 1140 | return Fmake_list (make_number (2), Qnil); |
c2662aea JB |
1141 | } |
1142 | ||
260e2e2a KH |
1143 | /* This holds the value of `environ' produced by the previous |
1144 | call to Fset_time_zone_rule, or 0 if Fset_time_zone_rule | |
1145 | has never been called. */ | |
1146 | static char **environbuf; | |
1147 | ||
143cb9a9 RS |
1148 | DEFUN ("set-time-zone-rule", Fset_time_zone_rule, Sset_time_zone_rule, 1, 1, 0, |
1149 | "Set the local time zone using TZ, a string specifying a time zone rule.\n\ | |
085e9fcb EN |
1150 | If TZ is nil, use implementation-defined default time zone information.\n\ |
1151 | If TZ is t, use Universal Time.") | |
143cb9a9 RS |
1152 | (tz) |
1153 | Lisp_Object tz; | |
1154 | { | |
143cb9a9 RS |
1155 | char *tzstring; |
1156 | ||
1157 | if (NILP (tz)) | |
1158 | tzstring = 0; | |
2e34157c | 1159 | else if (EQ (tz, Qt)) |
085e9fcb | 1160 | tzstring = "UTC0"; |
143cb9a9 RS |
1161 | else |
1162 | { | |
1163 | CHECK_STRING (tz, 0); | |
4d4c1514 | 1164 | tzstring = (char *) XSTRING (tz)->data; |
143cb9a9 RS |
1165 | } |
1166 | ||
c59b5089 PE |
1167 | set_time_zone_rule (tzstring); |
1168 | if (environbuf) | |
1169 | free (environbuf); | |
1170 | environbuf = environ; | |
1171 | ||
1172 | return Qnil; | |
1173 | } | |
1174 | ||
e0bf9faf PE |
1175 | #ifdef LOCALTIME_CACHE |
1176 | ||
1177 | /* These two values are known to load tz files in buggy implementations, | |
1178 | i.e. Solaris 1 executables running under either Solaris 1 or Solaris 2. | |
1155c453 RS |
1179 | Their values shouldn't matter in non-buggy implementations. |
1180 | We don't use string literals for these strings, | |
1181 | since if a string in the environment is in readonly | |
1182 | storage, it runs afoul of bugs in SVR4 and Solaris 2.3. | |
1183 | See Sun bugs 1113095 and 1114114, ``Timezone routines | |
1184 | improperly modify environment''. */ | |
1185 | ||
e0bf9faf PE |
1186 | static char set_time_zone_rule_tz1[] = "TZ=GMT+0"; |
1187 | static char set_time_zone_rule_tz2[] = "TZ=GMT+1"; | |
1188 | ||
1189 | #endif | |
1155c453 | 1190 | |
c59b5089 PE |
1191 | /* Set the local time zone rule to TZSTRING. |
1192 | This allocates memory into `environ', which it is the caller's | |
1193 | responsibility to free. */ | |
a92ae0ce | 1194 | void |
c59b5089 PE |
1195 | set_time_zone_rule (tzstring) |
1196 | char *tzstring; | |
1197 | { | |
1198 | int envptrs; | |
1199 | char **from, **to, **newenv; | |
1200 | ||
aafe5147 | 1201 | /* Make the ENVIRON vector longer with room for TZSTRING. */ |
143cb9a9 RS |
1202 | for (from = environ; *from; from++) |
1203 | continue; | |
1204 | envptrs = from - environ + 2; | |
1205 | newenv = to = (char **) xmalloc (envptrs * sizeof (char *) | |
1206 | + (tzstring ? strlen (tzstring) + 4 : 0)); | |
aafe5147 RS |
1207 | |
1208 | /* Add TZSTRING to the end of environ, as a value for TZ. */ | |
143cb9a9 RS |
1209 | if (tzstring) |
1210 | { | |
1211 | char *t = (char *) (to + envptrs); | |
1212 | strcpy (t, "TZ="); | |
1213 | strcat (t, tzstring); | |
1214 | *to++ = t; | |
1215 | } | |
1216 | ||
aafe5147 RS |
1217 | /* Copy the old environ vector elements into NEWENV, |
1218 | but don't copy the TZ variable. | |
1219 | So we have only one definition of TZ, which came from TZSTRING. */ | |
143cb9a9 RS |
1220 | for (from = environ; *from; from++) |
1221 | if (strncmp (*from, "TZ=", 3) != 0) | |
1222 | *to++ = *from; | |
1223 | *to = 0; | |
1224 | ||
1225 | environ = newenv; | |
143cb9a9 | 1226 | |
aafe5147 RS |
1227 | /* If we do have a TZSTRING, NEWENV points to the vector slot where |
1228 | the TZ variable is stored. If we do not have a TZSTRING, | |
1229 | TO points to the vector slot which has the terminating null. */ | |
1230 | ||
143cb9a9 | 1231 | #ifdef LOCALTIME_CACHE |
aafe5147 RS |
1232 | { |
1233 | /* In SunOS 4.1.3_U1 and 4.1.4, if TZ has a value like | |
1234 | "US/Pacific" that loads a tz file, then changes to a value like | |
1235 | "XXX0" that does not load a tz file, and then changes back to | |
1236 | its original value, the last change is (incorrectly) ignored. | |
1237 | Also, if TZ changes twice in succession to values that do | |
1238 | not load a tz file, tzset can dump core (see Sun bug#1225179). | |
1239 | The following code works around these bugs. */ | |
1240 | ||
aafe5147 RS |
1241 | if (tzstring) |
1242 | { | |
1243 | /* Temporarily set TZ to a value that loads a tz file | |
1244 | and that differs from tzstring. */ | |
1245 | char *tz = *newenv; | |
1155c453 RS |
1246 | *newenv = (strcmp (tzstring, set_time_zone_rule_tz1 + 3) == 0 |
1247 | ? set_time_zone_rule_tz2 : set_time_zone_rule_tz1); | |
aafe5147 RS |
1248 | tzset (); |
1249 | *newenv = tz; | |
1250 | } | |
1251 | else | |
1252 | { | |
1253 | /* The implied tzstring is unknown, so temporarily set TZ to | |
1254 | two different values that each load a tz file. */ | |
1155c453 | 1255 | *to = set_time_zone_rule_tz1; |
aafe5147 RS |
1256 | to[1] = 0; |
1257 | tzset (); | |
1155c453 | 1258 | *to = set_time_zone_rule_tz2; |
aafe5147 RS |
1259 | tzset (); |
1260 | *to = 0; | |
1261 | } | |
1262 | ||
1263 | /* Now TZ has the desired value, and tzset can be invoked safely. */ | |
1264 | } | |
1265 | ||
143cb9a9 RS |
1266 | tzset (); |
1267 | #endif | |
143cb9a9 | 1268 | } |
35692fe0 | 1269 | \f |
fb8106e8 KH |
1270 | /* Insert NARGS Lisp objects in the array ARGS by calling INSERT_FUNC |
1271 | (if a type of object is Lisp_Int) or INSERT_FROM_STRING_FUNC (if a | |
1272 | type of object is Lisp_String). INHERIT is passed to | |
1273 | INSERT_FROM_STRING_FUNC as the last argument. */ | |
1274 | ||
d11ba98c | 1275 | void |
fb8106e8 KH |
1276 | general_insert_function (insert_func, insert_from_string_func, |
1277 | inherit, nargs, args) | |
d11ba98c | 1278 | void (*insert_func) P_ ((unsigned char *, int)); |
1f24f4fd | 1279 | void (*insert_from_string_func) P_ ((Lisp_Object, int, int, int, int, int)); |
fb8106e8 KH |
1280 | int inherit, nargs; |
1281 | register Lisp_Object *args; | |
1282 | { | |
1283 | register int argnum; | |
1284 | register Lisp_Object val; | |
1285 | ||
1286 | for (argnum = 0; argnum < nargs; argnum++) | |
1287 | { | |
1288 | val = args[argnum]; | |
1289 | retry: | |
1290 | if (INTEGERP (val)) | |
1291 | { | |
d11ba98c | 1292 | unsigned char workbuf[4], *str; |
fb8106e8 KH |
1293 | int len; |
1294 | ||
1295 | if (!NILP (current_buffer->enable_multibyte_characters)) | |
1296 | len = CHAR_STRING (XFASTINT (val), workbuf, str); | |
1297 | else | |
1298 | workbuf[0] = XINT (val), str = workbuf, len = 1; | |
1299 | (*insert_func) (str, len); | |
1300 | } | |
1301 | else if (STRINGP (val)) | |
1302 | { | |
1f24f4fd RS |
1303 | (*insert_from_string_func) (val, 0, 0, |
1304 | XSTRING (val)->size, | |
dc3620af | 1305 | STRING_BYTES (XSTRING (val)), |
1f24f4fd | 1306 | inherit); |
fb8106e8 KH |
1307 | } |
1308 | else | |
1309 | { | |
1310 | val = wrong_type_argument (Qchar_or_string_p, val); | |
1311 | goto retry; | |
1312 | } | |
1313 | } | |
1314 | } | |
1315 | ||
35692fe0 JB |
1316 | void |
1317 | insert1 (arg) | |
1318 | Lisp_Object arg; | |
1319 | { | |
1320 | Finsert (1, &arg); | |
1321 | } | |
1322 | ||
52b14ac0 JB |
1323 | |
1324 | /* Callers passing one argument to Finsert need not gcpro the | |
1325 | argument "array", since the only element of the array will | |
1326 | not be used after calling insert or insert_from_string, so | |
1327 | we don't care if it gets trashed. */ | |
1328 | ||
35692fe0 JB |
1329 | DEFUN ("insert", Finsert, Sinsert, 0, MANY, 0, |
1330 | "Insert the arguments, either strings or characters, at point.\n\ | |
fb8106e8 KH |
1331 | Point and before-insertion-markers move forward so that it ends up\n\ |
1332 | after the inserted text.\n\ | |
35692fe0 JB |
1333 | Any other markers at the point of insertion remain before the text.") |
1334 | (nargs, args) | |
1335 | int nargs; | |
1336 | register Lisp_Object *args; | |
1337 | { | |
fb8106e8 | 1338 | general_insert_function (insert, insert_from_string, 0, nargs, args); |
be91036a RS |
1339 | return Qnil; |
1340 | } | |
1341 | ||
1342 | DEFUN ("insert-and-inherit", Finsert_and_inherit, Sinsert_and_inherit, | |
1343 | 0, MANY, 0, | |
1344 | "Insert the arguments at point, inheriting properties from adjoining text.\n\ | |
fb8106e8 KH |
1345 | Point and before-insertion-markers move forward so that it ends up\n\ |
1346 | after the inserted text.\n\ | |
be91036a RS |
1347 | Any other markers at the point of insertion remain before the text.") |
1348 | (nargs, args) | |
1349 | int nargs; | |
1350 | register Lisp_Object *args; | |
1351 | { | |
fb8106e8 KH |
1352 | general_insert_function (insert_and_inherit, insert_from_string, 1, |
1353 | nargs, args); | |
35692fe0 JB |
1354 | return Qnil; |
1355 | } | |
1356 | ||
1357 | DEFUN ("insert-before-markers", Finsert_before_markers, Sinsert_before_markers, 0, MANY, 0, | |
1358 | "Insert strings or characters at point, relocating markers after the text.\n\ | |
fb8106e8 KH |
1359 | Point and before-insertion-markers move forward so that it ends up\n\ |
1360 | after the inserted text.\n\ | |
35692fe0 JB |
1361 | Any other markers at the point of insertion also end up after the text.") |
1362 | (nargs, args) | |
1363 | int nargs; | |
1364 | register Lisp_Object *args; | |
1365 | { | |
fb8106e8 KH |
1366 | general_insert_function (insert_before_markers, |
1367 | insert_from_string_before_markers, 0, | |
1368 | nargs, args); | |
be91036a RS |
1369 | return Qnil; |
1370 | } | |
1371 | ||
a0d76c27 EN |
1372 | DEFUN ("insert-before-markers-and-inherit", Finsert_and_inherit_before_markers, |
1373 | Sinsert_and_inherit_before_markers, 0, MANY, 0, | |
be91036a RS |
1374 | "Insert text at point, relocating markers and inheriting properties.\n\ |
1375 | Point moves forward so that it ends up after the inserted text.\n\ | |
1376 | Any other markers at the point of insertion also end up after the text.") | |
1377 | (nargs, args) | |
1378 | int nargs; | |
1379 | register Lisp_Object *args; | |
1380 | { | |
fb8106e8 KH |
1381 | general_insert_function (insert_before_markers_and_inherit, |
1382 | insert_from_string_before_markers, 1, | |
1383 | nargs, args); | |
35692fe0 JB |
1384 | return Qnil; |
1385 | } | |
1386 | \f | |
e2eeabbb | 1387 | DEFUN ("insert-char", Finsert_char, Sinsert_char, 2, 3, 0, |
2591ec64 | 1388 | "Insert COUNT (second arg) copies of CHARACTER (first arg).\n\ |
fb8106e8 | 1389 | Point and before-insertion-markers are affected as in the function `insert'.\n\ |
e2eeabbb RS |
1390 | Both arguments are required.\n\ |
1391 | The optional third arg INHERIT, if non-nil, says to inherit text properties\n\ | |
1392 | from adjoining text, if those properties are sticky.") | |
2591ec64 EN |
1393 | (character, count, inherit) |
1394 | Lisp_Object character, count, inherit; | |
35692fe0 JB |
1395 | { |
1396 | register unsigned char *string; | |
1397 | register int strlen; | |
1398 | register int i, n; | |
fb8106e8 KH |
1399 | int len; |
1400 | unsigned char workbuf[4], *str; | |
35692fe0 | 1401 | |
2591ec64 | 1402 | CHECK_NUMBER (character, 0); |
35692fe0 JB |
1403 | CHECK_NUMBER (count, 1); |
1404 | ||
fb8106e8 KH |
1405 | if (!NILP (current_buffer->enable_multibyte_characters)) |
1406 | len = CHAR_STRING (XFASTINT (character), workbuf, str); | |
1407 | else | |
1408 | workbuf[0] = XFASTINT (character), str = workbuf, len = 1; | |
1409 | n = XINT (count) * len; | |
35692fe0 JB |
1410 | if (n <= 0) |
1411 | return Qnil; | |
fb8106e8 | 1412 | strlen = min (n, 256 * len); |
35692fe0 JB |
1413 | string = (unsigned char *) alloca (strlen); |
1414 | for (i = 0; i < strlen; i++) | |
fb8106e8 | 1415 | string[i] = str[i % len]; |
35692fe0 JB |
1416 | while (n >= strlen) |
1417 | { | |
54e42e2d | 1418 | QUIT; |
e2eeabbb RS |
1419 | if (!NILP (inherit)) |
1420 | insert_and_inherit (string, strlen); | |
1421 | else | |
1422 | insert (string, strlen); | |
35692fe0 JB |
1423 | n -= strlen; |
1424 | } | |
1425 | if (n > 0) | |
83951f1e KH |
1426 | { |
1427 | if (!NILP (inherit)) | |
1428 | insert_and_inherit (string, n); | |
1429 | else | |
1430 | insert (string, n); | |
1431 | } | |
35692fe0 JB |
1432 | return Qnil; |
1433 | } | |
1434 | ||
1435 | \f | |
ffd56f97 JB |
1436 | /* Making strings from buffer contents. */ |
1437 | ||
1438 | /* Return a Lisp_String containing the text of the current buffer from | |
74d6d8c5 | 1439 | START to END. If text properties are in use and the current buffer |
eb8c3be9 | 1440 | has properties in the range specified, the resulting string will also |
260e2e2a | 1441 | have them, if PROPS is nonzero. |
ffd56f97 JB |
1442 | |
1443 | We don't want to use plain old make_string here, because it calls | |
1444 | make_uninit_string, which can cause the buffer arena to be | |
1445 | compacted. make_string has no way of knowing that the data has | |
1446 | been moved, and thus copies the wrong data into the string. This | |
1447 | doesn't effect most of the other users of make_string, so it should | |
1448 | be left as is. But we should use this function when conjuring | |
1449 | buffer substrings. */ | |
74d6d8c5 | 1450 | |
ffd56f97 | 1451 | Lisp_Object |
260e2e2a | 1452 | make_buffer_string (start, end, props) |
ffd56f97 | 1453 | int start, end; |
260e2e2a | 1454 | int props; |
ffd56f97 | 1455 | { |
ec1c14f6 RS |
1456 | int start_byte = CHAR_TO_BYTE (start); |
1457 | int end_byte = CHAR_TO_BYTE (end); | |
ffd56f97 | 1458 | |
88441c8e RS |
1459 | return make_buffer_string_both (start, start_byte, end, end_byte, props); |
1460 | } | |
1461 | ||
1462 | /* Return a Lisp_String containing the text of the current buffer from | |
1463 | START / START_BYTE to END / END_BYTE. | |
1464 | ||
1465 | If text properties are in use and the current buffer | |
1466 | has properties in the range specified, the resulting string will also | |
1467 | have them, if PROPS is nonzero. | |
1468 | ||
1469 | We don't want to use plain old make_string here, because it calls | |
1470 | make_uninit_string, which can cause the buffer arena to be | |
1471 | compacted. make_string has no way of knowing that the data has | |
1472 | been moved, and thus copies the wrong data into the string. This | |
1473 | doesn't effect most of the other users of make_string, so it should | |
1474 | be left as is. But we should use this function when conjuring | |
1475 | buffer substrings. */ | |
1476 | ||
1477 | Lisp_Object | |
1478 | make_buffer_string_both (start, start_byte, end, end_byte, props) | |
1479 | int start, start_byte, end, end_byte; | |
1480 | int props; | |
1481 | { | |
1482 | Lisp_Object result, tem, tem1; | |
1483 | ||
ffd56f97 JB |
1484 | if (start < GPT && GPT < end) |
1485 | move_gap (start); | |
1486 | ||
5f75e666 RS |
1487 | if (! NILP (current_buffer->enable_multibyte_characters)) |
1488 | result = make_uninit_multibyte_string (end - start, end_byte - start_byte); | |
1489 | else | |
1490 | result = make_uninit_string (end - start); | |
ec1c14f6 RS |
1491 | bcopy (BYTE_POS_ADDR (start_byte), XSTRING (result)->data, |
1492 | end_byte - start_byte); | |
ffd56f97 | 1493 | |
260e2e2a | 1494 | /* If desired, update and copy the text properties. */ |
60b96ee7 | 1495 | #ifdef USE_TEXT_PROPERTIES |
260e2e2a KH |
1496 | if (props) |
1497 | { | |
1498 | update_buffer_properties (start, end); | |
1499 | ||
1500 | tem = Fnext_property_change (make_number (start), Qnil, make_number (end)); | |
1501 | tem1 = Ftext_properties_at (make_number (start), Qnil); | |
1502 | ||
1503 | if (XINT (tem) != end || !NILP (tem1)) | |
ec1c14f6 RS |
1504 | copy_intervals_to_string (result, current_buffer, start, |
1505 | end - start); | |
260e2e2a | 1506 | } |
60b96ee7 | 1507 | #endif |
74d6d8c5 | 1508 | |
ffd56f97 JB |
1509 | return result; |
1510 | } | |
35692fe0 | 1511 | |
260e2e2a KH |
1512 | /* Call Vbuffer_access_fontify_functions for the range START ... END |
1513 | in the current buffer, if necessary. */ | |
1514 | ||
1515 | static void | |
1516 | update_buffer_properties (start, end) | |
1517 | int start, end; | |
1518 | { | |
1519 | #ifdef USE_TEXT_PROPERTIES | |
1520 | /* If this buffer has some access functions, | |
1521 | call them, specifying the range of the buffer being accessed. */ | |
1522 | if (!NILP (Vbuffer_access_fontify_functions)) | |
1523 | { | |
1524 | Lisp_Object args[3]; | |
1525 | Lisp_Object tem; | |
1526 | ||
1527 | args[0] = Qbuffer_access_fontify_functions; | |
1528 | XSETINT (args[1], start); | |
1529 | XSETINT (args[2], end); | |
1530 | ||
1531 | /* But don't call them if we can tell that the work | |
1532 | has already been done. */ | |
1533 | if (!NILP (Vbuffer_access_fontified_property)) | |
1534 | { | |
1535 | tem = Ftext_property_any (args[1], args[2], | |
1536 | Vbuffer_access_fontified_property, | |
1537 | Qnil, Qnil); | |
1538 | if (! NILP (tem)) | |
ced1d19a | 1539 | Frun_hook_with_args (3, args); |
260e2e2a KH |
1540 | } |
1541 | else | |
ced1d19a | 1542 | Frun_hook_with_args (3, args); |
260e2e2a KH |
1543 | } |
1544 | #endif | |
1545 | } | |
1546 | ||
35692fe0 JB |
1547 | DEFUN ("buffer-substring", Fbuffer_substring, Sbuffer_substring, 2, 2, 0, |
1548 | "Return the contents of part of the current buffer as a string.\n\ | |
1549 | The two arguments START and END are character positions;\n\ | |
1550 | they can be in either order.") | |
2591ec64 EN |
1551 | (start, end) |
1552 | Lisp_Object start, end; | |
35692fe0 | 1553 | { |
2591ec64 | 1554 | register int b, e; |
35692fe0 | 1555 | |
2591ec64 EN |
1556 | validate_region (&start, &end); |
1557 | b = XINT (start); | |
1558 | e = XINT (end); | |
35692fe0 | 1559 | |
2591ec64 | 1560 | return make_buffer_string (b, e, 1); |
260e2e2a KH |
1561 | } |
1562 | ||
1563 | DEFUN ("buffer-substring-no-properties", Fbuffer_substring_no_properties, | |
1564 | Sbuffer_substring_no_properties, 2, 2, 0, | |
1565 | "Return the characters of part of the buffer, without the text properties.\n\ | |
1566 | The two arguments START and END are character positions;\n\ | |
1567 | they can be in either order.") | |
2591ec64 EN |
1568 | (start, end) |
1569 | Lisp_Object start, end; | |
260e2e2a | 1570 | { |
2591ec64 | 1571 | register int b, e; |
260e2e2a | 1572 | |
2591ec64 EN |
1573 | validate_region (&start, &end); |
1574 | b = XINT (start); | |
1575 | e = XINT (end); | |
260e2e2a | 1576 | |
2591ec64 | 1577 | return make_buffer_string (b, e, 0); |
35692fe0 JB |
1578 | } |
1579 | ||
1580 | DEFUN ("buffer-string", Fbuffer_string, Sbuffer_string, 0, 0, 0, | |
af7bd86c KH |
1581 | "Return the contents of the current buffer as a string.\n\ |
1582 | If narrowing is in effect, this function returns only the visible part\n\ | |
1583 | of the buffer.") | |
35692fe0 JB |
1584 | () |
1585 | { | |
260e2e2a | 1586 | return make_buffer_string (BEGV, ZV, 1); |
35692fe0 JB |
1587 | } |
1588 | ||
1589 | DEFUN ("insert-buffer-substring", Finsert_buffer_substring, Sinsert_buffer_substring, | |
1590 | 1, 3, 0, | |
83ea6fc2 | 1591 | "Insert before point a substring of the contents of buffer BUFFER.\n\ |
35692fe0 JB |
1592 | BUFFER may be a buffer or a buffer name.\n\ |
1593 | Arguments START and END are character numbers specifying the substring.\n\ | |
1594 | They default to the beginning and the end of BUFFER.") | |
2591ec64 EN |
1595 | (buf, start, end) |
1596 | Lisp_Object buf, start, end; | |
35692fe0 | 1597 | { |
2591ec64 | 1598 | register int b, e, temp; |
260e2e2a | 1599 | register struct buffer *bp, *obuf; |
3fff2dfa | 1600 | Lisp_Object buffer; |
35692fe0 | 1601 | |
3fff2dfa RS |
1602 | buffer = Fget_buffer (buf); |
1603 | if (NILP (buffer)) | |
1604 | nsberror (buf); | |
1605 | bp = XBUFFER (buffer); | |
93b62e82 KH |
1606 | if (NILP (bp->name)) |
1607 | error ("Selecting deleted buffer"); | |
35692fe0 | 1608 | |
2591ec64 EN |
1609 | if (NILP (start)) |
1610 | b = BUF_BEGV (bp); | |
35692fe0 JB |
1611 | else |
1612 | { | |
2591ec64 EN |
1613 | CHECK_NUMBER_COERCE_MARKER (start, 0); |
1614 | b = XINT (start); | |
35692fe0 | 1615 | } |
2591ec64 EN |
1616 | if (NILP (end)) |
1617 | e = BUF_ZV (bp); | |
35692fe0 JB |
1618 | else |
1619 | { | |
2591ec64 EN |
1620 | CHECK_NUMBER_COERCE_MARKER (end, 1); |
1621 | e = XINT (end); | |
35692fe0 JB |
1622 | } |
1623 | ||
2591ec64 EN |
1624 | if (b > e) |
1625 | temp = b, b = e, e = temp; | |
35692fe0 | 1626 | |
2591ec64 EN |
1627 | if (!(BUF_BEGV (bp) <= b && e <= BUF_ZV (bp))) |
1628 | args_out_of_range (start, end); | |
35692fe0 | 1629 | |
260e2e2a KH |
1630 | obuf = current_buffer; |
1631 | set_buffer_internal_1 (bp); | |
2591ec64 | 1632 | update_buffer_properties (b, e); |
260e2e2a KH |
1633 | set_buffer_internal_1 (obuf); |
1634 | ||
2591ec64 | 1635 | insert_from_buffer (bp, b, e - b, 0); |
35692fe0 JB |
1636 | return Qnil; |
1637 | } | |
e9cf2084 RS |
1638 | |
1639 | DEFUN ("compare-buffer-substrings", Fcompare_buffer_substrings, Scompare_buffer_substrings, | |
1640 | 6, 6, 0, | |
1641 | "Compare two substrings of two buffers; return result as number.\n\ | |
1642 | the value is -N if first string is less after N-1 chars,\n\ | |
1643 | +N if first string is greater after N-1 chars, or 0 if strings match.\n\ | |
1644 | Each substring is represented as three arguments: BUFFER, START and END.\n\ | |
1645 | That makes six args in all, three for each substring.\n\n\ | |
1646 | The value of `case-fold-search' in the current buffer\n\ | |
1647 | determines whether case is significant or ignored.") | |
1648 | (buffer1, start1, end1, buffer2, start2, end2) | |
1649 | Lisp_Object buffer1, start1, end1, buffer2, start2, end2; | |
1650 | { | |
1651 | register int begp1, endp1, begp2, endp2, temp, len1, len2, length, i; | |
1652 | register struct buffer *bp1, *bp2; | |
2a8b0ff0 | 1653 | register Lisp_Object *trt |
e9cf2084 | 1654 | = (!NILP (current_buffer->case_fold_search) |
2a8b0ff0 | 1655 | ? XCHAR_TABLE (current_buffer->case_canon_table)->contents : 0); |
ec1c14f6 RS |
1656 | int chars = 0; |
1657 | int beg1_byte, beg2_byte; | |
e9cf2084 RS |
1658 | |
1659 | /* Find the first buffer and its substring. */ | |
1660 | ||
1661 | if (NILP (buffer1)) | |
1662 | bp1 = current_buffer; | |
1663 | else | |
1664 | { | |
3fff2dfa RS |
1665 | Lisp_Object buf1; |
1666 | buf1 = Fget_buffer (buffer1); | |
1667 | if (NILP (buf1)) | |
1668 | nsberror (buffer1); | |
1669 | bp1 = XBUFFER (buf1); | |
93b62e82 KH |
1670 | if (NILP (bp1->name)) |
1671 | error ("Selecting deleted buffer"); | |
e9cf2084 RS |
1672 | } |
1673 | ||
1674 | if (NILP (start1)) | |
1675 | begp1 = BUF_BEGV (bp1); | |
1676 | else | |
1677 | { | |
1678 | CHECK_NUMBER_COERCE_MARKER (start1, 1); | |
1679 | begp1 = XINT (start1); | |
1680 | } | |
1681 | if (NILP (end1)) | |
1682 | endp1 = BUF_ZV (bp1); | |
1683 | else | |
1684 | { | |
1685 | CHECK_NUMBER_COERCE_MARKER (end1, 2); | |
1686 | endp1 = XINT (end1); | |
1687 | } | |
1688 | ||
1689 | if (begp1 > endp1) | |
1690 | temp = begp1, begp1 = endp1, endp1 = temp; | |
1691 | ||
1692 | if (!(BUF_BEGV (bp1) <= begp1 | |
1693 | && begp1 <= endp1 | |
1694 | && endp1 <= BUF_ZV (bp1))) | |
1695 | args_out_of_range (start1, end1); | |
1696 | ||
1697 | /* Likewise for second substring. */ | |
1698 | ||
1699 | if (NILP (buffer2)) | |
1700 | bp2 = current_buffer; | |
1701 | else | |
1702 | { | |
3fff2dfa RS |
1703 | Lisp_Object buf2; |
1704 | buf2 = Fget_buffer (buffer2); | |
1705 | if (NILP (buf2)) | |
1706 | nsberror (buffer2); | |
3b1fdd85 | 1707 | bp2 = XBUFFER (buf2); |
93b62e82 KH |
1708 | if (NILP (bp2->name)) |
1709 | error ("Selecting deleted buffer"); | |
e9cf2084 RS |
1710 | } |
1711 | ||
1712 | if (NILP (start2)) | |
1713 | begp2 = BUF_BEGV (bp2); | |
1714 | else | |
1715 | { | |
1716 | CHECK_NUMBER_COERCE_MARKER (start2, 4); | |
1717 | begp2 = XINT (start2); | |
1718 | } | |
1719 | if (NILP (end2)) | |
1720 | endp2 = BUF_ZV (bp2); | |
1721 | else | |
1722 | { | |
1723 | CHECK_NUMBER_COERCE_MARKER (end2, 5); | |
1724 | endp2 = XINT (end2); | |
1725 | } | |
1726 | ||
1727 | if (begp2 > endp2) | |
1728 | temp = begp2, begp2 = endp2, endp2 = temp; | |
1729 | ||
1730 | if (!(BUF_BEGV (bp2) <= begp2 | |
1731 | && begp2 <= endp2 | |
1732 | && endp2 <= BUF_ZV (bp2))) | |
1733 | args_out_of_range (start2, end2); | |
1734 | ||
ec1c14f6 RS |
1735 | beg1_byte = buf_charpos_to_bytepos (bp1, begp1); |
1736 | beg2_byte = buf_charpos_to_bytepos (bp2, begp2); | |
1737 | len1 = buf_charpos_to_bytepos (bp1, endp1) - begp1; | |
1738 | len2 = buf_charpos_to_bytepos (bp2, endp2) - begp2; | |
e9cf2084 RS |
1739 | length = len1; |
1740 | if (len2 < length) | |
1741 | length = len2; | |
1742 | ||
1743 | for (i = 0; i < length; i++) | |
1744 | { | |
ec1c14f6 RS |
1745 | unsigned char *p1 = BUF_BYTE_ADDRESS (bp1, beg1_byte + i); |
1746 | int c1 = *p1; | |
1747 | int c2 = *BUF_BYTE_ADDRESS (bp2, beg2_byte + i); | |
1748 | ||
1749 | /* If a character begins here, | |
1750 | count the previous character now. */ | |
1751 | if (i > 0 | |
1752 | && (NILP (current_buffer->enable_multibyte_characters) | |
1753 | || CHAR_HEAD_P (*p1))) | |
1754 | chars++; | |
1755 | ||
e9cf2084 RS |
1756 | if (trt) |
1757 | { | |
1b10fb77 RS |
1758 | c1 = XINT (trt[c1]); |
1759 | c2 = XINT (trt[c2]); | |
e9cf2084 RS |
1760 | } |
1761 | if (c1 < c2) | |
ec1c14f6 | 1762 | return make_number (- 1 - chars); |
e9cf2084 | 1763 | if (c1 > c2) |
ec1c14f6 | 1764 | return make_number (chars + 1); |
e9cf2084 RS |
1765 | } |
1766 | ||
1767 | /* The strings match as far as they go. | |
1768 | If one is shorter, that one is less. */ | |
1769 | if (length < len1) | |
ec1c14f6 | 1770 | return make_number (chars + 1); |
e9cf2084 | 1771 | else if (length < len2) |
ec1c14f6 | 1772 | return make_number (- chars - 1); |
e9cf2084 RS |
1773 | |
1774 | /* Same length too => they are equal. */ | |
1775 | return make_number (0); | |
1776 | } | |
35692fe0 | 1777 | \f |
d5a539cd RS |
1778 | static Lisp_Object |
1779 | subst_char_in_region_unwind (arg) | |
1780 | Lisp_Object arg; | |
1781 | { | |
1782 | return current_buffer->undo_list = arg; | |
1783 | } | |
1784 | ||
c8e76b47 RS |
1785 | static Lisp_Object |
1786 | subst_char_in_region_unwind_1 (arg) | |
1787 | Lisp_Object arg; | |
1788 | { | |
1789 | return current_buffer->filename = arg; | |
1790 | } | |
1791 | ||
35692fe0 JB |
1792 | DEFUN ("subst-char-in-region", Fsubst_char_in_region, |
1793 | Ssubst_char_in_region, 4, 5, 0, | |
1794 | "From START to END, replace FROMCHAR with TOCHAR each time it occurs.\n\ | |
1795 | If optional arg NOUNDO is non-nil, don't record this change for undo\n\ | |
fb8106e8 KH |
1796 | and don't mark the buffer as really changed.\n\ |
1797 | Both characters must have the same length of multi-byte form.") | |
35692fe0 JB |
1798 | (start, end, fromchar, tochar, noundo) |
1799 | Lisp_Object start, end, fromchar, tochar, noundo; | |
1800 | { | |
84246b95 | 1801 | register int pos, pos_byte, stop, i, len, end_byte; |
60b96ee7 | 1802 | int changed = 0; |
fb8106e8 | 1803 | unsigned char fromwork[4], *fromstr, towork[4], *tostr, *p; |
d5a539cd | 1804 | int count = specpdl_ptr - specpdl; |
35692fe0 JB |
1805 | |
1806 | validate_region (&start, &end); | |
1807 | CHECK_NUMBER (fromchar, 2); | |
1808 | CHECK_NUMBER (tochar, 3); | |
1809 | ||
fb8106e8 KH |
1810 | if (! NILP (current_buffer->enable_multibyte_characters)) |
1811 | { | |
1812 | len = CHAR_STRING (XFASTINT (fromchar), fromwork, fromstr); | |
1813 | if (CHAR_STRING (XFASTINT (tochar), towork, tostr) != len) | |
1814 | error ("Characters in subst-char-in-region have different byte-lengths"); | |
1815 | } | |
1816 | else | |
1817 | { | |
1818 | len = 1; | |
1819 | fromwork[0] = XFASTINT (fromchar), fromstr = fromwork; | |
1820 | towork[0] = XFASTINT (tochar), tostr = towork; | |
1821 | } | |
1822 | ||
84246b95 KH |
1823 | pos = XINT (start); |
1824 | pos_byte = CHAR_TO_BYTE (pos); | |
ec1c14f6 RS |
1825 | stop = CHAR_TO_BYTE (XINT (end)); |
1826 | end_byte = stop; | |
35692fe0 | 1827 | |
d5a539cd RS |
1828 | /* If we don't want undo, turn off putting stuff on the list. |
1829 | That's faster than getting rid of things, | |
c8e76b47 RS |
1830 | and it prevents even the entry for a first change. |
1831 | Also inhibit locking the file. */ | |
d5a539cd RS |
1832 | if (!NILP (noundo)) |
1833 | { | |
1834 | record_unwind_protect (subst_char_in_region_unwind, | |
1835 | current_buffer->undo_list); | |
1836 | current_buffer->undo_list = Qt; | |
c8e76b47 RS |
1837 | /* Don't do file-locking. */ |
1838 | record_unwind_protect (subst_char_in_region_unwind_1, | |
1839 | current_buffer->filename); | |
1840 | current_buffer->filename = Qnil; | |
d5a539cd RS |
1841 | } |
1842 | ||
84246b95 | 1843 | if (pos_byte < GPT_BYTE) |
ec1c14f6 | 1844 | stop = min (stop, GPT_BYTE); |
fb8106e8 | 1845 | while (1) |
35692fe0 | 1846 | { |
84246b95 | 1847 | if (pos_byte >= stop) |
fb8106e8 | 1848 | { |
84246b95 | 1849 | if (pos_byte >= end_byte) break; |
ec1c14f6 | 1850 | stop = end_byte; |
fb8106e8 | 1851 | } |
84246b95 | 1852 | p = BYTE_POS_ADDR (pos_byte); |
fb8106e8 KH |
1853 | if (p[0] == fromstr[0] |
1854 | && (len == 1 | |
1855 | || (p[1] == fromstr[1] | |
1856 | && (len == 2 || (p[2] == fromstr[2] | |
1857 | && (len == 3 || p[3] == fromstr[3])))))) | |
35692fe0 | 1858 | { |
60b96ee7 RS |
1859 | if (! changed) |
1860 | { | |
fb8106e8 | 1861 | modify_region (current_buffer, XINT (start), XINT (end)); |
7653d030 RS |
1862 | |
1863 | if (! NILP (noundo)) | |
1864 | { | |
1e158d25 RS |
1865 | if (MODIFF - 1 == SAVE_MODIFF) |
1866 | SAVE_MODIFF++; | |
7653d030 RS |
1867 | if (MODIFF - 1 == current_buffer->auto_save_modified) |
1868 | current_buffer->auto_save_modified++; | |
1869 | } | |
1870 | ||
fb8106e8 | 1871 | changed = 1; |
60b96ee7 RS |
1872 | } |
1873 | ||
56a98455 | 1874 | if (NILP (noundo)) |
84246b95 | 1875 | record_change (pos, 1); |
fb8106e8 | 1876 | for (i = 0; i < len; i++) *p++ = tostr[i]; |
35692fe0 | 1877 | } |
84246b95 | 1878 | INC_BOTH (pos, pos_byte); |
35692fe0 JB |
1879 | } |
1880 | ||
60b96ee7 RS |
1881 | if (changed) |
1882 | signal_after_change (XINT (start), | |
84246b95 | 1883 | XINT (end) - XINT (start), XINT (end) - XINT (start)); |
60b96ee7 | 1884 | |
d5a539cd | 1885 | unbind_to (count, Qnil); |
35692fe0 JB |
1886 | return Qnil; |
1887 | } | |
1888 | ||
1889 | DEFUN ("translate-region", Ftranslate_region, Stranslate_region, 3, 3, 0, | |
1890 | "From START to END, translate characters according to TABLE.\n\ | |
1891 | TABLE is a string; the Nth character in it is the mapping\n\ | |
1f24f4fd RS |
1892 | for the character with code N.\n\ |
1893 | This function does not alter multibyte characters.\n\ | |
1894 | It returns the number of characters changed.") | |
35692fe0 JB |
1895 | (start, end, table) |
1896 | Lisp_Object start; | |
1897 | Lisp_Object end; | |
1898 | register Lisp_Object table; | |
1899 | { | |
ec1c14f6 | 1900 | register int pos_byte, stop; /* Limits of the region. */ |
35692fe0 | 1901 | register unsigned char *tt; /* Trans table. */ |
35692fe0 JB |
1902 | register int nc; /* New character. */ |
1903 | int cnt; /* Number of changes made. */ | |
35692fe0 | 1904 | int size; /* Size of translate table. */ |
1f24f4fd | 1905 | int pos; |
35692fe0 JB |
1906 | |
1907 | validate_region (&start, &end); | |
1908 | CHECK_STRING (table, 2); | |
1909 | ||
dc3620af | 1910 | size = STRING_BYTES (XSTRING (table)); |
35692fe0 JB |
1911 | tt = XSTRING (table)->data; |
1912 | ||
ec1c14f6 RS |
1913 | pos_byte = CHAR_TO_BYTE (XINT (start)); |
1914 | stop = CHAR_TO_BYTE (XINT (end)); | |
1915 | modify_region (current_buffer, XINT (start), XINT (end)); | |
1f24f4fd | 1916 | pos = XINT (start); |
35692fe0 JB |
1917 | |
1918 | cnt = 0; | |
1f24f4fd | 1919 | for (; pos_byte < stop; ) |
35692fe0 | 1920 | { |
ec1c14f6 | 1921 | register unsigned char *p = BYTE_POS_ADDR (pos_byte); |
1f24f4fd RS |
1922 | int len; |
1923 | int oc; | |
ec1c14f6 | 1924 | |
1f24f4fd RS |
1925 | oc = STRING_CHAR_AND_LENGTH (p, stop - pos_byte, len); |
1926 | if (oc < size && len == 1) | |
35692fe0 JB |
1927 | { |
1928 | nc = tt[oc]; | |
1929 | if (nc != oc) | |
1930 | { | |
1f24f4fd | 1931 | record_change (pos, 1); |
ec1c14f6 | 1932 | *p = nc; |
1f24f4fd | 1933 | signal_after_change (pos, 1, 1); |
35692fe0 JB |
1934 | ++cnt; |
1935 | } | |
1936 | } | |
1f24f4fd RS |
1937 | pos_byte += len; |
1938 | pos++; | |
35692fe0 JB |
1939 | } |
1940 | ||
ec1c14f6 | 1941 | return make_number (cnt); |
35692fe0 JB |
1942 | } |
1943 | ||
1944 | DEFUN ("delete-region", Fdelete_region, Sdelete_region, 2, 2, "r", | |
1945 | "Delete the text between point and mark.\n\ | |
1946 | When called from a program, expects two arguments,\n\ | |
1947 | positions (integers or markers) specifying the stretch to be deleted.") | |
2591ec64 EN |
1948 | (start, end) |
1949 | Lisp_Object start, end; | |
35692fe0 | 1950 | { |
2591ec64 EN |
1951 | validate_region (&start, &end); |
1952 | del_range (XINT (start), XINT (end)); | |
35692fe0 JB |
1953 | return Qnil; |
1954 | } | |
1955 | \f | |
1956 | DEFUN ("widen", Fwiden, Swiden, 0, 0, "", | |
1957 | "Remove restrictions (narrowing) from current buffer.\n\ | |
1958 | This allows the buffer's full text to be seen and edited.") | |
1959 | () | |
1960 | { | |
2cad2e34 RS |
1961 | if (BEG != BEGV || Z != ZV) |
1962 | current_buffer->clip_changed = 1; | |
35692fe0 | 1963 | BEGV = BEG; |
ec1c14f6 RS |
1964 | BEGV_BYTE = BEG_BYTE; |
1965 | SET_BUF_ZV_BOTH (current_buffer, Z, Z_BYTE); | |
52b14ac0 JB |
1966 | /* Changing the buffer bounds invalidates any recorded current column. */ |
1967 | invalidate_current_column (); | |
35692fe0 JB |
1968 | return Qnil; |
1969 | } | |
1970 | ||
1971 | DEFUN ("narrow-to-region", Fnarrow_to_region, Snarrow_to_region, 2, 2, "r", | |
1972 | "Restrict editing in this buffer to the current region.\n\ | |
1973 | The rest of the text becomes temporarily invisible and untouchable\n\ | |
1974 | but is not deleted; if you save the buffer in a file, the invisible\n\ | |
1975 | text is included in the file. \\[widen] makes all visible again.\n\ | |
1976 | See also `save-restriction'.\n\ | |
1977 | \n\ | |
1978 | When calling from a program, pass two arguments; positions (integers\n\ | |
1979 | or markers) bounding the text that should remain visible.") | |
2591ec64 EN |
1980 | (start, end) |
1981 | register Lisp_Object start, end; | |
35692fe0 | 1982 | { |
2591ec64 EN |
1983 | CHECK_NUMBER_COERCE_MARKER (start, 0); |
1984 | CHECK_NUMBER_COERCE_MARKER (end, 1); | |
35692fe0 | 1985 | |
2591ec64 | 1986 | if (XINT (start) > XINT (end)) |
35692fe0 | 1987 | { |
b5a6948e | 1988 | Lisp_Object tem; |
2591ec64 | 1989 | tem = start; start = end; end = tem; |
35692fe0 JB |
1990 | } |
1991 | ||
2591ec64 EN |
1992 | if (!(BEG <= XINT (start) && XINT (start) <= XINT (end) && XINT (end) <= Z)) |
1993 | args_out_of_range (start, end); | |
35692fe0 | 1994 | |
2cad2e34 RS |
1995 | if (BEGV != XFASTINT (start) || ZV != XFASTINT (end)) |
1996 | current_buffer->clip_changed = 1; | |
1997 | ||
ec1c14f6 | 1998 | SET_BUF_BEGV (current_buffer, XFASTINT (start)); |
2591ec64 | 1999 | SET_BUF_ZV (current_buffer, XFASTINT (end)); |
6ec8bbd2 | 2000 | if (PT < XFASTINT (start)) |
2591ec64 | 2001 | SET_PT (XFASTINT (start)); |
6ec8bbd2 | 2002 | if (PT > XFASTINT (end)) |
2591ec64 | 2003 | SET_PT (XFASTINT (end)); |
52b14ac0 JB |
2004 | /* Changing the buffer bounds invalidates any recorded current column. */ |
2005 | invalidate_current_column (); | |
35692fe0 JB |
2006 | return Qnil; |
2007 | } | |
2008 | ||
2009 | Lisp_Object | |
2010 | save_restriction_save () | |
2011 | { | |
2012 | register Lisp_Object bottom, top; | |
2013 | /* Note: I tried using markers here, but it does not win | |
2014 | because insertion at the end of the saved region | |
2015 | does not advance mh and is considered "outside" the saved region. */ | |
55561c63 KH |
2016 | XSETFASTINT (bottom, BEGV - BEG); |
2017 | XSETFASTINT (top, Z - ZV); | |
35692fe0 JB |
2018 | |
2019 | return Fcons (Fcurrent_buffer (), Fcons (bottom, top)); | |
2020 | } | |
2021 | ||
2022 | Lisp_Object | |
2023 | save_restriction_restore (data) | |
2024 | Lisp_Object data; | |
2025 | { | |
2026 | register struct buffer *buf; | |
2027 | register int newhead, newtail; | |
2028 | register Lisp_Object tem; | |
2cad2e34 | 2029 | int obegv, ozv; |
35692fe0 JB |
2030 | |
2031 | buf = XBUFFER (XCONS (data)->car); | |
2032 | ||
2033 | data = XCONS (data)->cdr; | |
2034 | ||
2035 | tem = XCONS (data)->car; | |
2036 | newhead = XINT (tem); | |
2037 | tem = XCONS (data)->cdr; | |
2038 | newtail = XINT (tem); | |
2039 | if (newhead + newtail > BUF_Z (buf) - BUF_BEG (buf)) | |
2040 | { | |
2041 | newhead = 0; | |
2042 | newtail = 0; | |
2043 | } | |
2cad2e34 RS |
2044 | |
2045 | obegv = BUF_BEGV (buf); | |
2046 | ozv = BUF_ZV (buf); | |
2047 | ||
ec1c14f6 | 2048 | SET_BUF_BEGV (buf, BUF_BEG (buf) + newhead); |
35692fe0 | 2049 | SET_BUF_ZV (buf, BUF_Z (buf) - newtail); |
2cad2e34 RS |
2050 | |
2051 | if (obegv != BUF_BEGV (buf) || ozv != BUF_ZV (buf)) | |
2052 | current_buffer->clip_changed = 1; | |
35692fe0 JB |
2053 | |
2054 | /* If point is outside the new visible range, move it inside. */ | |
ec1c14f6 RS |
2055 | SET_BUF_PT_BOTH (buf, |
2056 | clip_to_bounds (BUF_BEGV (buf), BUF_PT (buf), BUF_ZV (buf)), | |
2057 | clip_to_bounds (BUF_BEGV_BYTE (buf), BUF_PT_BYTE (buf), | |
2058 | BUF_ZV_BYTE (buf))); | |
35692fe0 JB |
2059 | |
2060 | return Qnil; | |
2061 | } | |
2062 | ||
2063 | DEFUN ("save-restriction", Fsave_restriction, Ssave_restriction, 0, UNEVALLED, 0, | |
2064 | "Execute BODY, saving and restoring current buffer's restrictions.\n\ | |
2065 | The buffer's restrictions make parts of the beginning and end invisible.\n\ | |
2066 | \(They are set up with `narrow-to-region' and eliminated with `widen'.)\n\ | |
2067 | This special form, `save-restriction', saves the current buffer's restrictions\n\ | |
2068 | when it is entered, and restores them when it is exited.\n\ | |
2069 | So any `narrow-to-region' within BODY lasts only until the end of the form.\n\ | |
2070 | The old restrictions settings are restored\n\ | |
2071 | even in case of abnormal exit (throw or error).\n\ | |
2072 | \n\ | |
2073 | The value returned is the value of the last form in BODY.\n\ | |
2074 | \n\ | |
2075 | `save-restriction' can get confused if, within the BODY, you widen\n\ | |
2076 | and then make changes outside the area within the saved restrictions.\n\ | |
2077 | \n\ | |
2078 | Note: if you are using both `save-excursion' and `save-restriction',\n\ | |
2079 | use `save-excursion' outermost:\n\ | |
2080 | (save-excursion (save-restriction ...))") | |
2081 | (body) | |
2082 | Lisp_Object body; | |
2083 | { | |
2084 | register Lisp_Object val; | |
2085 | int count = specpdl_ptr - specpdl; | |
2086 | ||
2087 | record_unwind_protect (save_restriction_restore, save_restriction_save ()); | |
2088 | val = Fprogn (body); | |
2089 | return unbind_to (count, val); | |
2090 | } | |
2091 | \f | |
671fbc4d KH |
2092 | /* Buffer for the most recent text displayed by Fmessage. */ |
2093 | static char *message_text; | |
2094 | ||
2095 | /* Allocated length of that buffer. */ | |
2096 | static int message_length; | |
2097 | ||
35692fe0 JB |
2098 | DEFUN ("message", Fmessage, Smessage, 1, MANY, 0, |
2099 | "Print a one-line message at the bottom of the screen.\n\ | |
98fc5c3c RS |
2100 | The first argument is a format control string, and the rest are data\n\ |
2101 | to be formatted under control of the string. See `format' for details.\n\ | |
2102 | \n\ | |
ccdac5be JB |
2103 | If the first argument is nil, clear any existing message; let the\n\ |
2104 | minibuffer contents show.") | |
35692fe0 JB |
2105 | (nargs, args) |
2106 | int nargs; | |
2107 | Lisp_Object *args; | |
2108 | { | |
ccdac5be | 2109 | if (NILP (args[0])) |
f0250249 JB |
2110 | { |
2111 | message (0); | |
2112 | return Qnil; | |
2113 | } | |
ccdac5be JB |
2114 | else |
2115 | { | |
2116 | register Lisp_Object val; | |
2117 | val = Fformat (nargs, args); | |
671fbc4d KH |
2118 | /* Copy the data so that it won't move when we GC. */ |
2119 | if (! message_text) | |
2120 | { | |
2121 | message_text = (char *)xmalloc (80); | |
2122 | message_length = 80; | |
2123 | } | |
dc3620af | 2124 | if (STRING_BYTES (XSTRING (val)) > message_length) |
671fbc4d | 2125 | { |
dc3620af | 2126 | message_length = STRING_BYTES (XSTRING (val)); |
671fbc4d KH |
2127 | message_text = (char *)xrealloc (message_text, message_length); |
2128 | } | |
dc3620af RS |
2129 | bcopy (XSTRING (val)->data, message_text, STRING_BYTES (XSTRING (val))); |
2130 | message2 (message_text, STRING_BYTES (XSTRING (val)), | |
1f24f4fd | 2131 | STRING_MULTIBYTE (val)); |
ccdac5be JB |
2132 | return val; |
2133 | } | |
35692fe0 JB |
2134 | } |
2135 | ||
cacc3e2c RS |
2136 | DEFUN ("message-box", Fmessage_box, Smessage_box, 1, MANY, 0, |
2137 | "Display a message, in a dialog box if possible.\n\ | |
2138 | If a dialog box is not available, use the echo area.\n\ | |
f8250f01 RS |
2139 | The first argument is a format control string, and the rest are data\n\ |
2140 | to be formatted under control of the string. See `format' for details.\n\ | |
2141 | \n\ | |
cacc3e2c RS |
2142 | If the first argument is nil, clear any existing message; let the\n\ |
2143 | minibuffer contents show.") | |
2144 | (nargs, args) | |
2145 | int nargs; | |
2146 | Lisp_Object *args; | |
2147 | { | |
2148 | if (NILP (args[0])) | |
2149 | { | |
2150 | message (0); | |
2151 | return Qnil; | |
2152 | } | |
2153 | else | |
2154 | { | |
2155 | register Lisp_Object val; | |
2156 | val = Fformat (nargs, args); | |
f8250f01 | 2157 | #ifdef HAVE_MENUS |
cacc3e2c RS |
2158 | { |
2159 | Lisp_Object pane, menu, obj; | |
2160 | struct gcpro gcpro1; | |
2161 | pane = Fcons (Fcons (build_string ("OK"), Qt), Qnil); | |
2162 | GCPRO1 (pane); | |
2163 | menu = Fcons (val, pane); | |
2164 | obj = Fx_popup_dialog (Qt, menu); | |
2165 | UNGCPRO; | |
2166 | return val; | |
2167 | } | |
f8250f01 | 2168 | #else /* not HAVE_MENUS */ |
cacc3e2c RS |
2169 | /* Copy the data so that it won't move when we GC. */ |
2170 | if (! message_text) | |
2171 | { | |
2172 | message_text = (char *)xmalloc (80); | |
2173 | message_length = 80; | |
2174 | } | |
dc3620af | 2175 | if (STRING_BYTES (XSTRING (val)) > message_length) |
cacc3e2c | 2176 | { |
dc3620af | 2177 | message_length = STRING_BYTES (XSTRING (val)); |
cacc3e2c RS |
2178 | message_text = (char *)xrealloc (message_text, message_length); |
2179 | } | |
dc3620af | 2180 | bcopy (XSTRING (val)->data, message_text, STRING_BYTES (XSTRING (val))); |
d13a8480 RS |
2181 | message2 (message_text, STRING_BYTES (XSTRING (val)), |
2182 | STRING_MULTIBYTE (val)); | |
cacc3e2c | 2183 | return val; |
f8250f01 | 2184 | #endif /* not HAVE_MENUS */ |
cacc3e2c RS |
2185 | } |
2186 | } | |
f8250f01 | 2187 | #ifdef HAVE_MENUS |
cacc3e2c RS |
2188 | extern Lisp_Object last_nonmenu_event; |
2189 | #endif | |
f8250f01 | 2190 | |
cacc3e2c RS |
2191 | DEFUN ("message-or-box", Fmessage_or_box, Smessage_or_box, 1, MANY, 0, |
2192 | "Display a message in a dialog box or in the echo area.\n\ | |
2193 | If this command was invoked with the mouse, use a dialog box.\n\ | |
2194 | Otherwise, use the echo area.\n\ | |
f8250f01 RS |
2195 | The first argument is a format control string, and the rest are data\n\ |
2196 | to be formatted under control of the string. See `format' for details.\n\ | |
cacc3e2c | 2197 | \n\ |
cacc3e2c RS |
2198 | If the first argument is nil, clear any existing message; let the\n\ |
2199 | minibuffer contents show.") | |
2200 | (nargs, args) | |
2201 | int nargs; | |
2202 | Lisp_Object *args; | |
2203 | { | |
f8250f01 | 2204 | #ifdef HAVE_MENUS |
cacc3e2c | 2205 | if (NILP (last_nonmenu_event) || CONSP (last_nonmenu_event)) |
0a56ee6b | 2206 | return Fmessage_box (nargs, args); |
cacc3e2c RS |
2207 | #endif |
2208 | return Fmessage (nargs, args); | |
2209 | } | |
2210 | ||
b14dda8a RS |
2211 | DEFUN ("current-message", Fcurrent_message, Scurrent_message, 0, 0, 0, |
2212 | "Return the string currently displayed in the echo area, or nil if none.") | |
2213 | () | |
2214 | { | |
2215 | return (echo_area_glyphs | |
2216 | ? make_string (echo_area_glyphs, echo_area_glyphs_length) | |
2217 | : Qnil); | |
2218 | } | |
2219 | ||
1f24f4fd RS |
2220 | /* Number of bytes that STRING will occupy when put into the result. |
2221 | MULTIBYTE is nonzero if the result should be multibyte. */ | |
2222 | ||
2223 | #define CONVERTED_BYTE_SIZE(MULTIBYTE, STRING) \ | |
2224 | (((MULTIBYTE) && ! STRING_MULTIBYTE (STRING)) \ | |
8d6179dc | 2225 | ? count_size_as_multibyte (XSTRING (STRING)->data, \ |
dc3620af RS |
2226 | STRING_BYTES (XSTRING (STRING))) \ |
2227 | : STRING_BYTES (XSTRING (STRING))) | |
1f24f4fd | 2228 | |
35692fe0 JB |
2229 | DEFUN ("format", Fformat, Sformat, 1, MANY, 0, |
2230 | "Format a string out of a control-string and arguments.\n\ | |
2231 | The first argument is a control string.\n\ | |
2232 | The other arguments are substituted into it to make the result, a string.\n\ | |
2233 | It may contain %-sequences meaning to substitute the next argument.\n\ | |
2234 | %s means print a string argument. Actually, prints any object, with `princ'.\n\ | |
2235 | %d means print as number in decimal (%o octal, %x hex).\n\ | |
9db1775a RS |
2236 | %e means print a number in exponential notation.\n\ |
2237 | %f means print a number in decimal-point notation.\n\ | |
2238 | %g means print a number in exponential notation\n\ | |
2239 | or decimal-point notation, whichever uses fewer characters.\n\ | |
35692fe0 JB |
2240 | %c means print a number as a single character.\n\ |
2241 | %S means print any object as an s-expression (using prin1).\n\ | |
9db1775a | 2242 | The argument used for %d, %o, %x, %e, %f, %g or %c must be a number.\n\ |
52b14ac0 | 2243 | Use %% to put a single % into the output.") |
35692fe0 JB |
2244 | (nargs, args) |
2245 | int nargs; | |
2246 | register Lisp_Object *args; | |
2247 | { | |
2248 | register int n; /* The number of the next arg to substitute */ | |
e781c49e | 2249 | register int total; /* An estimate of the final length */ |
1f24f4fd | 2250 | char *buf, *p; |
35692fe0 | 2251 | register unsigned char *format, *end; |
1f24f4fd RS |
2252 | int length, nchars; |
2253 | /* Nonzero if the output should be a multibyte string, | |
2254 | which is true if any of the inputs is one. */ | |
2255 | int multibyte = 0; | |
2256 | unsigned char *this_format; | |
e781c49e | 2257 | int longest_format; |
8d6179dc | 2258 | Lisp_Object val; |
1f24f4fd | 2259 | |
35692fe0 | 2260 | extern char *index (); |
1f24f4fd | 2261 | |
35692fe0 JB |
2262 | /* It should not be necessary to GCPRO ARGS, because |
2263 | the caller in the interpreter should take care of that. */ | |
2264 | ||
e781c49e RS |
2265 | /* Try to determine whether the result should be multibyte. |
2266 | This is not always right; sometimes the result needs to be multibyte | |
2267 | because of an object that we will pass through prin1, | |
2268 | and in that case, we won't know it here. */ | |
1f24f4fd RS |
2269 | for (n = 0; n < nargs; n++) |
2270 | if (STRINGP (args[n]) && STRING_MULTIBYTE (args[n])) | |
2271 | multibyte = 1; | |
2272 | ||
35692fe0 | 2273 | CHECK_STRING (args[0], 0); |
e781c49e RS |
2274 | |
2275 | /* If we start out planning a unibyte result, | |
2276 | and later find it has to be multibyte, we jump back to retry. */ | |
2277 | retry: | |
2278 | ||
35692fe0 | 2279 | format = XSTRING (args[0])->data; |
dc3620af | 2280 | end = format + STRING_BYTES (XSTRING (args[0])); |
e781c49e | 2281 | longest_format = 0; |
1f24f4fd RS |
2282 | |
2283 | /* Make room in result for all the non-%-codes in the control string. */ | |
e781c49e | 2284 | total = 5 + CONVERTED_BYTE_SIZE (multibyte, args[0]); |
1f24f4fd RS |
2285 | |
2286 | /* Add to TOTAL enough space to hold the converted arguments. */ | |
35692fe0 JB |
2287 | |
2288 | n = 0; | |
2289 | while (format != end) | |
2290 | if (*format++ == '%') | |
2291 | { | |
1f24f4fd RS |
2292 | int minlen, thissize = 0; |
2293 | unsigned char *this_format_start = format - 1; | |
35692fe0 JB |
2294 | |
2295 | /* Process a numeric arg and skip it. */ | |
2296 | minlen = atoi (format); | |
537dfb13 RS |
2297 | if (minlen < 0) |
2298 | minlen = - minlen; | |
2299 | ||
35692fe0 JB |
2300 | while ((*format >= '0' && *format <= '9') |
2301 | || *format == '-' || *format == ' ' || *format == '.') | |
2302 | format++; | |
2303 | ||
1f24f4fd RS |
2304 | if (format - this_format_start + 1 > longest_format) |
2305 | longest_format = format - this_format_start + 1; | |
2306 | ||
35692fe0 JB |
2307 | if (*format == '%') |
2308 | format++; | |
2309 | else if (++n >= nargs) | |
537dfb13 | 2310 | error ("Not enough arguments for format string"); |
35692fe0 JB |
2311 | else if (*format == 'S') |
2312 | { | |
2313 | /* For `S', prin1 the argument and then treat like a string. */ | |
2314 | register Lisp_Object tem; | |
2315 | tem = Fprin1_to_string (args[n], Qnil); | |
e781c49e RS |
2316 | if (STRING_MULTIBYTE (tem) && ! multibyte) |
2317 | { | |
2318 | multibyte = 1; | |
2319 | goto retry; | |
2320 | } | |
35692fe0 JB |
2321 | args[n] = tem; |
2322 | goto string; | |
2323 | } | |
ae683129 | 2324 | else if (SYMBOLP (args[n])) |
35692fe0 | 2325 | { |
d2fd0445 | 2326 | XSETSTRING (args[n], XSYMBOL (args[n])->name); |
7df74da6 RS |
2327 | if (STRING_MULTIBYTE (args[n]) && ! multibyte) |
2328 | { | |
2329 | multibyte = 1; | |
2330 | goto retry; | |
2331 | } | |
35692fe0 JB |
2332 | goto string; |
2333 | } | |
ae683129 | 2334 | else if (STRINGP (args[n])) |
35692fe0 JB |
2335 | { |
2336 | string: | |
b22e7ecc KH |
2337 | if (*format != 's' && *format != 'S') |
2338 | error ("format specifier doesn't match argument type"); | |
1f24f4fd | 2339 | thissize = CONVERTED_BYTE_SIZE (multibyte, args[n]); |
35692fe0 JB |
2340 | } |
2341 | /* Would get MPV otherwise, since Lisp_Int's `point' to low memory. */ | |
ae683129 | 2342 | else if (INTEGERP (args[n]) && *format != 's') |
35692fe0 | 2343 | { |
4746118a | 2344 | #ifdef LISP_FLOAT_TYPE |
eb8c3be9 | 2345 | /* The following loop assumes the Lisp type indicates |
35692fe0 JB |
2346 | the proper way to pass the argument. |
2347 | So make sure we have a flonum if the argument should | |
2348 | be a double. */ | |
2349 | if (*format == 'e' || *format == 'f' || *format == 'g') | |
2350 | args[n] = Ffloat (args[n]); | |
4746118a | 2351 | #endif |
f49a2d74 | 2352 | thissize = 30; |
25c9e7fb RS |
2353 | if (*format == 'c' |
2354 | && (! SINGLE_BYTE_CHAR_P (XINT (args[n])) | |
2355 | || XINT (args[n]) == 0)) | |
f49a2d74 KH |
2356 | { |
2357 | if (! multibyte) | |
2358 | { | |
2359 | multibyte = 1; | |
2360 | goto retry; | |
2361 | } | |
2362 | args[n] = Fchar_to_string (args[n]); | |
dc3620af | 2363 | thissize = STRING_BYTES (XSTRING (args[n])); |
f49a2d74 | 2364 | } |
35692fe0 | 2365 | } |
4746118a | 2366 | #ifdef LISP_FLOAT_TYPE |
ae683129 | 2367 | else if (FLOATP (args[n]) && *format != 's') |
35692fe0 JB |
2368 | { |
2369 | if (! (*format == 'e' || *format == 'f' || *format == 'g')) | |
247422ce | 2370 | args[n] = Ftruncate (args[n], Qnil); |
1f24f4fd | 2371 | thissize = 60; |
35692fe0 | 2372 | } |
4746118a | 2373 | #endif |
35692fe0 JB |
2374 | else |
2375 | { | |
2376 | /* Anything but a string, convert to a string using princ. */ | |
2377 | register Lisp_Object tem; | |
2378 | tem = Fprin1_to_string (args[n], Qt); | |
a4e91443 | 2379 | if (STRING_MULTIBYTE (tem) & ! multibyte) |
e781c49e RS |
2380 | { |
2381 | multibyte = 1; | |
2382 | goto retry; | |
2383 | } | |
35692fe0 JB |
2384 | args[n] = tem; |
2385 | goto string; | |
2386 | } | |
1f24f4fd RS |
2387 | |
2388 | if (thissize < minlen) | |
2389 | thissize = minlen; | |
2390 | ||
2391 | total += thissize + 4; | |
35692fe0 JB |
2392 | } |
2393 | ||
e781c49e RS |
2394 | /* Now we can no longer jump to retry. |
2395 | TOTAL and LONGEST_FORMAT are known for certain. */ | |
2396 | ||
1f24f4fd | 2397 | this_format = (unsigned char *) alloca (longest_format + 1); |
50aa2f90 | 2398 | |
1f24f4fd RS |
2399 | /* Allocate the space for the result. |
2400 | Note that TOTAL is an overestimate. */ | |
2401 | if (total < 1000) | |
2402 | buf = (unsigned char *) alloca (total + 1); | |
2403 | else | |
2404 | buf = (unsigned char *) xmalloc (total + 1); | |
35692fe0 | 2405 | |
1f24f4fd RS |
2406 | p = buf; |
2407 | nchars = 0; | |
2408 | n = 0; | |
35692fe0 | 2409 | |
1f24f4fd RS |
2410 | /* Scan the format and store result in BUF. */ |
2411 | format = XSTRING (args[0])->data; | |
2412 | while (format != end) | |
2413 | { | |
2414 | if (*format == '%') | |
2415 | { | |
2416 | int minlen; | |
25c9e7fb | 2417 | int negative = 0; |
1f24f4fd | 2418 | unsigned char *this_format_start = format; |
35692fe0 | 2419 | |
1f24f4fd | 2420 | format++; |
fb893977 | 2421 | |
1f24f4fd RS |
2422 | /* Process a numeric arg and skip it. */ |
2423 | minlen = atoi (format); | |
2424 | if (minlen < 0) | |
25c9e7fb | 2425 | minlen = - minlen, negative = 1; |
35692fe0 | 2426 | |
1f24f4fd RS |
2427 | while ((*format >= '0' && *format <= '9') |
2428 | || *format == '-' || *format == ' ' || *format == '.') | |
2429 | format++; | |
35692fe0 | 2430 | |
1f24f4fd RS |
2431 | if (*format++ == '%') |
2432 | { | |
2433 | *p++ = '%'; | |
2434 | nchars++; | |
2435 | continue; | |
2436 | } | |
2437 | ||
2438 | ++n; | |
2439 | ||
2440 | if (STRINGP (args[n])) | |
2441 | { | |
25c9e7fb RS |
2442 | int padding, nbytes; |
2443 | int width = strwidth (XSTRING (args[n])->data, | |
dc3620af | 2444 | STRING_BYTES (XSTRING (args[n]))); |
25c9e7fb RS |
2445 | |
2446 | /* If spec requires it, pad on right with spaces. */ | |
2447 | padding = minlen - width; | |
2448 | if (! negative) | |
2449 | while (padding-- > 0) | |
2450 | { | |
2451 | *p++ = ' '; | |
2452 | nchars++; | |
2453 | } | |
1f24f4fd RS |
2454 | |
2455 | nbytes = copy_text (XSTRING (args[n])->data, p, | |
dc3620af | 2456 | STRING_BYTES (XSTRING (args[n])), |
1f24f4fd RS |
2457 | STRING_MULTIBYTE (args[n]), multibyte); |
2458 | p += nbytes; | |
2459 | nchars += XSTRING (args[n])->size; | |
2460 | ||
25c9e7fb RS |
2461 | if (negative) |
2462 | while (padding-- > 0) | |
2463 | { | |
2464 | *p++ = ' '; | |
2465 | nchars++; | |
2466 | } | |
1f24f4fd RS |
2467 | } |
2468 | else if (INTEGERP (args[n]) || FLOATP (args[n])) | |
2469 | { | |
2470 | int this_nchars; | |
2471 | ||
2472 | bcopy (this_format_start, this_format, | |
2473 | format - this_format_start); | |
2474 | this_format[format - this_format_start] = 0; | |
2475 | ||
d0183d38 RS |
2476 | if (INTEGERP (args[n])) |
2477 | sprintf (p, this_format, XINT (args[n])); | |
2478 | else | |
2479 | sprintf (p, this_format, XFLOAT (args[n])->data); | |
1f24f4fd RS |
2480 | |
2481 | this_nchars = strlen (p); | |
2482 | p += this_nchars; | |
2483 | nchars += this_nchars; | |
2484 | } | |
2485 | } | |
7df74da6 RS |
2486 | else if (STRING_MULTIBYTE (args[0])) |
2487 | { | |
2488 | /* Copy a whole multibyte character. */ | |
2489 | *p++ = *format++; | |
2490 | while (! CHAR_HEAD_P (*format)) *p++ = *format++; | |
2491 | nchars++; | |
2492 | } | |
2493 | else if (multibyte) | |
1f24f4fd RS |
2494 | { |
2495 | /* Convert a single-byte character to multibyte. */ | |
2496 | int len = copy_text (format, p, 1, 0, 1); | |
2497 | ||
2498 | p += len; | |
2499 | format++; | |
2500 | nchars++; | |
2501 | } | |
2502 | else | |
2503 | *p++ = *format++, nchars++; | |
2504 | } | |
2505 | ||
5f75e666 | 2506 | val = make_specified_string (buf, nchars, p - buf, multibyte); |
8d6179dc | 2507 | |
1f24f4fd RS |
2508 | /* If we allocated BUF with malloc, free it too. */ |
2509 | if (total >= 1000) | |
2510 | xfree (buf); | |
35692fe0 | 2511 | |
8d6179dc | 2512 | return val; |
35692fe0 JB |
2513 | } |
2514 | ||
2515 | /* VARARGS 1 */ | |
2516 | Lisp_Object | |
2517 | #ifdef NO_ARG_ARRAY | |
2518 | format1 (string1, arg0, arg1, arg2, arg3, arg4) | |
679e18b1 | 2519 | EMACS_INT arg0, arg1, arg2, arg3, arg4; |
35692fe0 JB |
2520 | #else |
2521 | format1 (string1) | |
2522 | #endif | |
2523 | char *string1; | |
2524 | { | |
2525 | char buf[100]; | |
2526 | #ifdef NO_ARG_ARRAY | |
679e18b1 | 2527 | EMACS_INT args[5]; |
35692fe0 JB |
2528 | args[0] = arg0; |
2529 | args[1] = arg1; | |
2530 | args[2] = arg2; | |
2531 | args[3] = arg3; | |
2532 | args[4] = arg4; | |
e3670faa | 2533 | doprnt (buf, sizeof buf, string1, (char *)0, 5, (char **) args); |
35692fe0 | 2534 | #else |
ea4d2909 | 2535 | doprnt (buf, sizeof buf, string1, (char *)0, 5, &string1 + 1); |
35692fe0 JB |
2536 | #endif |
2537 | return build_string (buf); | |
2538 | } | |
2539 | \f | |
2540 | DEFUN ("char-equal", Fchar_equal, Schar_equal, 2, 2, 0, | |
2541 | "Return t if two characters match, optionally ignoring case.\n\ | |
2542 | Both arguments must be characters (i.e. integers).\n\ | |
2543 | Case is ignored if `case-fold-search' is non-nil in the current buffer.") | |
2544 | (c1, c2) | |
2545 | register Lisp_Object c1, c2; | |
2546 | { | |
1b5d98bb | 2547 | int i1, i2; |
35692fe0 JB |
2548 | CHECK_NUMBER (c1, 0); |
2549 | CHECK_NUMBER (c2, 1); | |
2550 | ||
1b5d98bb | 2551 | if (XINT (c1) == XINT (c2)) |
35692fe0 | 2552 | return Qt; |
1b5d98bb RS |
2553 | if (NILP (current_buffer->case_fold_search)) |
2554 | return Qnil; | |
2555 | ||
2556 | /* Do these in separate statements, | |
2557 | then compare the variables. | |
2558 | because of the way DOWNCASE uses temp variables. */ | |
2559 | i1 = DOWNCASE (XFASTINT (c1)); | |
2560 | i2 = DOWNCASE (XFASTINT (c2)); | |
2561 | return (i1 == i2 ? Qt : Qnil); | |
35692fe0 | 2562 | } |
b229b8d1 RS |
2563 | \f |
2564 | /* Transpose the markers in two regions of the current buffer, and | |
2565 | adjust the ones between them if necessary (i.e.: if the regions | |
2566 | differ in size). | |
2567 | ||
ec1c14f6 RS |
2568 | START1, END1 are the character positions of the first region. |
2569 | START1_BYTE, END1_BYTE are the byte positions. | |
2570 | START2, END2 are the character positions of the second region. | |
2571 | START2_BYTE, END2_BYTE are the byte positions. | |
2572 | ||
b229b8d1 RS |
2573 | Traverses the entire marker list of the buffer to do so, adding an |
2574 | appropriate amount to some, subtracting from some, and leaving the | |
2575 | rest untouched. Most of this is copied from adjust_markers in insdel.c. | |
2576 | ||
ec1c14f6 | 2577 | It's the caller's job to ensure that START1 <= END1 <= START2 <= END2. */ |
b229b8d1 RS |
2578 | |
2579 | void | |
ec1c14f6 RS |
2580 | transpose_markers (start1, end1, start2, end2, |
2581 | start1_byte, end1_byte, start2_byte, end2_byte) | |
b229b8d1 | 2582 | register int start1, end1, start2, end2; |
ec1c14f6 | 2583 | register int start1_byte, end1_byte, start2_byte, end2_byte; |
b229b8d1 | 2584 | { |
ec1c14f6 | 2585 | register int amt1, amt1_byte, amt2, amt2_byte, diff, diff_byte, mpos; |
b229b8d1 | 2586 | register Lisp_Object marker; |
b229b8d1 | 2587 | |
03240d11 | 2588 | /* Update point as if it were a marker. */ |
8de1d5f0 KH |
2589 | if (PT < start1) |
2590 | ; | |
2591 | else if (PT < end1) | |
ec1c14f6 RS |
2592 | TEMP_SET_PT_BOTH (PT + (end2 - end1), |
2593 | PT_BYTE + (end2_byte - end1_byte)); | |
8de1d5f0 | 2594 | else if (PT < start2) |
ec1c14f6 RS |
2595 | TEMP_SET_PT_BOTH (PT + (end2 - start2) - (end1 - start1), |
2596 | (PT_BYTE + (end2_byte - start2_byte) | |
2597 | - (end1_byte - start1_byte))); | |
8de1d5f0 | 2598 | else if (PT < end2) |
ec1c14f6 RS |
2599 | TEMP_SET_PT_BOTH (PT - (start2 - start1), |
2600 | PT_BYTE - (start2_byte - start1_byte)); | |
8de1d5f0 | 2601 | |
03240d11 KH |
2602 | /* We used to adjust the endpoints here to account for the gap, but that |
2603 | isn't good enough. Even if we assume the caller has tried to move the | |
2604 | gap out of our way, it might still be at start1 exactly, for example; | |
2605 | and that places it `inside' the interval, for our purposes. The amount | |
2606 | of adjustment is nontrivial if there's a `denormalized' marker whose | |
2607 | position is between GPT and GPT + GAP_SIZE, so it's simpler to leave | |
2608 | the dirty work to Fmarker_position, below. */ | |
b229b8d1 RS |
2609 | |
2610 | /* The difference between the region's lengths */ | |
2611 | diff = (end2 - start2) - (end1 - start1); | |
ec1c14f6 | 2612 | diff_byte = (end2_byte - start2_byte) - (end1_byte - start1_byte); |
b229b8d1 RS |
2613 | |
2614 | /* For shifting each marker in a region by the length of the other | |
ec1c14f6 | 2615 | region plus the distance between the regions. */ |
b229b8d1 RS |
2616 | amt1 = (end2 - start2) + (start2 - end1); |
2617 | amt2 = (end1 - start1) + (start2 - end1); | |
ec1c14f6 RS |
2618 | amt1_byte = (end2_byte - start2_byte) + (start2_byte - end1_byte); |
2619 | amt2_byte = (end1_byte - start1_byte) + (start2_byte - end1_byte); | |
b229b8d1 | 2620 | |
1e158d25 | 2621 | for (marker = BUF_MARKERS (current_buffer); !NILP (marker); |
03240d11 | 2622 | marker = XMARKER (marker)->chain) |
b229b8d1 | 2623 | { |
ec1c14f6 RS |
2624 | mpos = marker_byte_position (marker); |
2625 | if (mpos >= start1_byte && mpos < end2_byte) | |
2626 | { | |
2627 | if (mpos < end1_byte) | |
2628 | mpos += amt1_byte; | |
2629 | else if (mpos < start2_byte) | |
2630 | mpos += diff_byte; | |
2631 | else | |
2632 | mpos -= amt2_byte; | |
f3e1f752 | 2633 | XMARKER (marker)->bytepos = mpos; |
ec1c14f6 RS |
2634 | } |
2635 | mpos = XMARKER (marker)->charpos; | |
03240d11 KH |
2636 | if (mpos >= start1 && mpos < end2) |
2637 | { | |
2638 | if (mpos < end1) | |
2639 | mpos += amt1; | |
2640 | else if (mpos < start2) | |
2641 | mpos += diff; | |
2642 | else | |
2643 | mpos -= amt2; | |
03240d11 | 2644 | } |
ec1c14f6 | 2645 | XMARKER (marker)->charpos = mpos; |
b229b8d1 RS |
2646 | } |
2647 | } | |
2648 | ||
2649 | DEFUN ("transpose-regions", Ftranspose_regions, Stranspose_regions, 4, 5, 0, | |
2650 | "Transpose region START1 to END1 with START2 to END2.\n\ | |
2651 | The regions may not be overlapping, because the size of the buffer is\n\ | |
2652 | never changed in a transposition.\n\ | |
2653 | \n\ | |
ec1c14f6 | 2654 | Optional fifth arg LEAVE_MARKERS, if non-nil, means don't update\n\ |
b229b8d1 RS |
2655 | any markers that happen to be located in the regions.\n\ |
2656 | \n\ | |
2657 | Transposing beyond buffer boundaries is an error.") | |
2658 | (startr1, endr1, startr2, endr2, leave_markers) | |
2659 | Lisp_Object startr1, endr1, startr2, endr2, leave_markers; | |
2660 | { | |
ec1c14f6 RS |
2661 | register int start1, end1, start2, end2; |
2662 | int start1_byte, start2_byte, len1_byte, len2_byte; | |
2663 | int gap, len1, len_mid, len2; | |
3c6bc7d0 | 2664 | unsigned char *start1_addr, *start2_addr, *temp; |
dc3620af RS |
2665 | int combined_before_bytes_1, combined_after_bytes_1; |
2666 | int combined_before_bytes_2, combined_after_bytes_2; | |
2667 | struct gcpro gcpro1, gcpro2; | |
b229b8d1 RS |
2668 | |
2669 | #ifdef USE_TEXT_PROPERTIES | |
2670 | INTERVAL cur_intv, tmp_interval1, tmp_interval_mid, tmp_interval2; | |
1e158d25 | 2671 | cur_intv = BUF_INTERVALS (current_buffer); |
b229b8d1 RS |
2672 | #endif /* USE_TEXT_PROPERTIES */ |
2673 | ||
2674 | validate_region (&startr1, &endr1); | |
2675 | validate_region (&startr2, &endr2); | |
2676 | ||
2677 | start1 = XFASTINT (startr1); | |
2678 | end1 = XFASTINT (endr1); | |
2679 | start2 = XFASTINT (startr2); | |
2680 | end2 = XFASTINT (endr2); | |
2681 | gap = GPT; | |
2682 | ||
2683 | /* Swap the regions if they're reversed. */ | |
2684 | if (start2 < end1) | |
2685 | { | |
2686 | register int glumph = start1; | |
2687 | start1 = start2; | |
2688 | start2 = glumph; | |
2689 | glumph = end1; | |
2690 | end1 = end2; | |
2691 | end2 = glumph; | |
2692 | } | |
2693 | ||
b229b8d1 RS |
2694 | len1 = end1 - start1; |
2695 | len2 = end2 - start2; | |
2696 | ||
2697 | if (start2 < end1) | |
dc3620af | 2698 | error ("Transposed regions overlap"); |
b229b8d1 | 2699 | else if (start1 == end1 || start2 == end2) |
dc3620af | 2700 | error ("Transposed region has length 0"); |
b229b8d1 RS |
2701 | |
2702 | /* The possibilities are: | |
2703 | 1. Adjacent (contiguous) regions, or separate but equal regions | |
2704 | (no, really equal, in this case!), or | |
2705 | 2. Separate regions of unequal size. | |
2706 | ||
2707 | The worst case is usually No. 2. It means that (aside from | |
2708 | potential need for getting the gap out of the way), there also | |
2709 | needs to be a shifting of the text between the two regions. So | |
2710 | if they are spread far apart, we are that much slower... sigh. */ | |
2711 | ||
2712 | /* It must be pointed out that the really studly thing to do would | |
2713 | be not to move the gap at all, but to leave it in place and work | |
2714 | around it if necessary. This would be extremely efficient, | |
2715 | especially considering that people are likely to do | |
2716 | transpositions near where they are working interactively, which | |
2717 | is exactly where the gap would be found. However, such code | |
2718 | would be much harder to write and to read. So, if you are | |
2719 | reading this comment and are feeling squirrely, by all means have | |
2720 | a go! I just didn't feel like doing it, so I will simply move | |
2721 | the gap the minimum distance to get it out of the way, and then | |
2722 | deal with an unbroken array. */ | |
3c6bc7d0 RS |
2723 | |
2724 | /* Make sure the gap won't interfere, by moving it out of the text | |
2725 | we will operate on. */ | |
2726 | if (start1 < gap && gap < end2) | |
2727 | { | |
2728 | if (gap - start1 < end2 - gap) | |
2729 | move_gap (start1); | |
2730 | else | |
2731 | move_gap (end2); | |
2732 | } | |
ec1c14f6 RS |
2733 | |
2734 | start1_byte = CHAR_TO_BYTE (start1); | |
2735 | start2_byte = CHAR_TO_BYTE (start2); | |
2736 | len1_byte = CHAR_TO_BYTE (end1) - start1_byte; | |
2737 | len2_byte = CHAR_TO_BYTE (end2) - start2_byte; | |
dc3620af RS |
2738 | |
2739 | if (end1 == start2) | |
2740 | { | |
2741 | combined_before_bytes_2 | |
2742 | = count_combining_before (BYTE_POS_ADDR (start2_byte), | |
2743 | len2_byte, start1, start1_byte); | |
2744 | combined_before_bytes_1 | |
2745 | = count_combining_before (BYTE_POS_ADDR (start1_byte), | |
2746 | len1_byte, end2, start2_byte + len2_byte); | |
2747 | combined_after_bytes_1 | |
2748 | = count_combining_after (BYTE_POS_ADDR (start1_byte), | |
2749 | len1_byte, end2, start2_byte + len2_byte); | |
2750 | combined_after_bytes_2 = 0; | |
2751 | } | |
2752 | else | |
2753 | { | |
2754 | combined_before_bytes_2 | |
2755 | = count_combining_before (BYTE_POS_ADDR (start2_byte), | |
2756 | len2_byte, start1, start1_byte); | |
2757 | combined_before_bytes_1 | |
2758 | = count_combining_before (BYTE_POS_ADDR (start1_byte), | |
2759 | len1_byte, start2, start2_byte); | |
2760 | combined_after_bytes_2 | |
2761 | = count_combining_after (BYTE_POS_ADDR (start2_byte), | |
2762 | len2_byte, end1, start1_byte + len1_byte); | |
2763 | combined_after_bytes_1 | |
2764 | = count_combining_after (BYTE_POS_ADDR (start1_byte), | |
2765 | len1_byte, end2, start2_byte + len2_byte); | |
2766 | } | |
2767 | ||
2768 | /* If any combining is going to happen, do this the stupid way, | |
2769 | because replace handles combining properly. */ | |
2770 | if (combined_before_bytes_1 || combined_before_bytes_2 | |
2771 | || combined_after_bytes_1 || combined_after_bytes_2) | |
2772 | { | |
2773 | Lisp_Object text1, text2; | |
2774 | ||
2775 | text1 = text2 = Qnil; | |
2776 | GCPRO2 (text1, text2); | |
2777 | ||
2778 | text1 = make_buffer_string_both (start1, start1_byte, | |
2779 | end1, start1_byte + len1_byte, 1); | |
2780 | text2 = make_buffer_string_both (start2, start2_byte, | |
2781 | end2, start2_byte + len2_byte, 1); | |
2782 | ||
2783 | transpose_markers (start1, end1, start2, end2, | |
2784 | start1_byte, start1_byte + len1_byte, | |
2785 | start2_byte, start2_byte + len2_byte); | |
2786 | ||
8daf7106 AS |
2787 | replace_range (start2, end2, text1, 1, 0, 1); |
2788 | replace_range (start1, end1, text2, 1, 0, 1); | |
dc3620af RS |
2789 | |
2790 | UNGCPRO; | |
2791 | return Qnil; | |
2792 | } | |
b229b8d1 RS |
2793 | |
2794 | /* Hmmm... how about checking to see if the gap is large | |
2795 | enough to use as the temporary storage? That would avoid an | |
2796 | allocation... interesting. Later, don't fool with it now. */ | |
2797 | ||
2798 | /* Working without memmove, for portability (sigh), so must be | |
2799 | careful of overlapping subsections of the array... */ | |
2800 | ||
2801 | if (end1 == start2) /* adjacent regions */ | |
2802 | { | |
b229b8d1 RS |
2803 | modify_region (current_buffer, start1, end2); |
2804 | record_change (start1, len1 + len2); | |
2805 | ||
2806 | #ifdef USE_TEXT_PROPERTIES | |
2807 | tmp_interval1 = copy_intervals (cur_intv, start1, len1); | |
2808 | tmp_interval2 = copy_intervals (cur_intv, start2, len2); | |
09dbcf71 RS |
2809 | Fset_text_properties (make_number (start1), make_number (end2), |
2810 | Qnil, Qnil); | |
b229b8d1 RS |
2811 | #endif /* USE_TEXT_PROPERTIES */ |
2812 | ||
2813 | /* First region smaller than second. */ | |
ec1c14f6 | 2814 | if (len1_byte < len2_byte) |
b229b8d1 | 2815 | { |
3c6bc7d0 RS |
2816 | /* We use alloca only if it is small, |
2817 | because we want to avoid stack overflow. */ | |
ec1c14f6 RS |
2818 | if (len2_byte > 20000) |
2819 | temp = (unsigned char *) xmalloc (len2_byte); | |
3c6bc7d0 | 2820 | else |
ec1c14f6 | 2821 | temp = (unsigned char *) alloca (len2_byte); |
03240d11 KH |
2822 | |
2823 | /* Don't precompute these addresses. We have to compute them | |
2824 | at the last minute, because the relocating allocator might | |
2825 | have moved the buffer around during the xmalloc. */ | |
ec1c14f6 RS |
2826 | start1_addr = BUF_CHAR_ADDRESS (current_buffer, start1_byte); |
2827 | start2_addr = BUF_CHAR_ADDRESS (current_buffer, start2_byte); | |
03240d11 | 2828 | |
ec1c14f6 RS |
2829 | bcopy (start2_addr, temp, len2_byte); |
2830 | bcopy (start1_addr, start1_addr + len2_byte, len1_byte); | |
2831 | bcopy (temp, start1_addr, len2_byte); | |
2832 | if (len2_byte > 20000) | |
3c6bc7d0 | 2833 | free (temp); |
b229b8d1 RS |
2834 | } |
2835 | else | |
2836 | /* First region not smaller than second. */ | |
2837 | { | |
ec1c14f6 RS |
2838 | if (len1_byte > 20000) |
2839 | temp = (unsigned char *) xmalloc (len1_byte); | |
3c6bc7d0 | 2840 | else |
ec1c14f6 RS |
2841 | temp = (unsigned char *) alloca (len1_byte); |
2842 | start1_addr = BUF_CHAR_ADDRESS (current_buffer, start1_byte); | |
2843 | start2_addr = BUF_CHAR_ADDRESS (current_buffer, start2_byte); | |
2844 | bcopy (start1_addr, temp, len1_byte); | |
2845 | bcopy (start2_addr, start1_addr, len2_byte); | |
2846 | bcopy (temp, start1_addr + len2_byte, len1_byte); | |
2847 | if (len1_byte > 20000) | |
3c6bc7d0 | 2848 | free (temp); |
b229b8d1 RS |
2849 | } |
2850 | #ifdef USE_TEXT_PROPERTIES | |
2851 | graft_intervals_into_buffer (tmp_interval1, start1 + len2, | |
2852 | len1, current_buffer, 0); | |
2853 | graft_intervals_into_buffer (tmp_interval2, start1, | |
2854 | len2, current_buffer, 0); | |
2855 | #endif /* USE_TEXT_PROPERTIES */ | |
2856 | } | |
2857 | /* Non-adjacent regions, because end1 != start2, bleagh... */ | |
2858 | else | |
2859 | { | |
ec1c14f6 RS |
2860 | len_mid = start2_byte - (start1_byte + len1_byte); |
2861 | ||
2862 | if (len1_byte == len2_byte) | |
b229b8d1 RS |
2863 | /* Regions are same size, though, how nice. */ |
2864 | { | |
2865 | modify_region (current_buffer, start1, end1); | |
2866 | modify_region (current_buffer, start2, end2); | |
2867 | record_change (start1, len1); | |
2868 | record_change (start2, len2); | |
2869 | #ifdef USE_TEXT_PROPERTIES | |
2870 | tmp_interval1 = copy_intervals (cur_intv, start1, len1); | |
2871 | tmp_interval2 = copy_intervals (cur_intv, start2, len2); | |
09dbcf71 RS |
2872 | Fset_text_properties (make_number (start1), make_number (end1), |
2873 | Qnil, Qnil); | |
2874 | Fset_text_properties (make_number (start2), make_number (end2), | |
2875 | Qnil, Qnil); | |
b229b8d1 RS |
2876 | #endif /* USE_TEXT_PROPERTIES */ |
2877 | ||
ec1c14f6 RS |
2878 | if (len1_byte > 20000) |
2879 | temp = (unsigned char *) xmalloc (len1_byte); | |
3c6bc7d0 | 2880 | else |
ec1c14f6 RS |
2881 | temp = (unsigned char *) alloca (len1_byte); |
2882 | start1_addr = BUF_CHAR_ADDRESS (current_buffer, start1_byte); | |
2883 | start2_addr = BUF_CHAR_ADDRESS (current_buffer, start2_byte); | |
2884 | bcopy (start1_addr, temp, len1_byte); | |
2885 | bcopy (start2_addr, start1_addr, len2_byte); | |
2886 | bcopy (temp, start2_addr, len1_byte); | |
2887 | if (len1_byte > 20000) | |
3c6bc7d0 | 2888 | free (temp); |
b229b8d1 RS |
2889 | #ifdef USE_TEXT_PROPERTIES |
2890 | graft_intervals_into_buffer (tmp_interval1, start2, | |
2891 | len1, current_buffer, 0); | |
2892 | graft_intervals_into_buffer (tmp_interval2, start1, | |
2893 | len2, current_buffer, 0); | |
2894 | #endif /* USE_TEXT_PROPERTIES */ | |
2895 | } | |
2896 | ||
ec1c14f6 | 2897 | else if (len1_byte < len2_byte) /* Second region larger than first */ |
b229b8d1 RS |
2898 | /* Non-adjacent & unequal size, area between must also be shifted. */ |
2899 | { | |
b229b8d1 RS |
2900 | modify_region (current_buffer, start1, end2); |
2901 | record_change (start1, (end2 - start1)); | |
2902 | #ifdef USE_TEXT_PROPERTIES | |
2903 | tmp_interval1 = copy_intervals (cur_intv, start1, len1); | |
2904 | tmp_interval_mid = copy_intervals (cur_intv, end1, len_mid); | |
2905 | tmp_interval2 = copy_intervals (cur_intv, start2, len2); | |
09dbcf71 RS |
2906 | Fset_text_properties (make_number (start1), make_number (end2), |
2907 | Qnil, Qnil); | |
b229b8d1 RS |
2908 | #endif /* USE_TEXT_PROPERTIES */ |
2909 | ||
3c6bc7d0 | 2910 | /* holds region 2 */ |
ec1c14f6 RS |
2911 | if (len2_byte > 20000) |
2912 | temp = (unsigned char *) xmalloc (len2_byte); | |
3c6bc7d0 | 2913 | else |
ec1c14f6 RS |
2914 | temp = (unsigned char *) alloca (len2_byte); |
2915 | start1_addr = BUF_CHAR_ADDRESS (current_buffer, start1_byte); | |
2916 | start2_addr = BUF_CHAR_ADDRESS (current_buffer, start2_byte); | |
2917 | bcopy (start2_addr, temp, len2_byte); | |
2918 | bcopy (start1_addr, start1_addr + len_mid + len2_byte, len1_byte); | |
2919 | safe_bcopy (start1_addr + len1_byte, start1_addr + len2_byte, len_mid); | |
2920 | bcopy (temp, start1_addr, len2_byte); | |
2921 | if (len2_byte > 20000) | |
3c6bc7d0 | 2922 | free (temp); |
b229b8d1 RS |
2923 | #ifdef USE_TEXT_PROPERTIES |
2924 | graft_intervals_into_buffer (tmp_interval1, end2 - len1, | |
2925 | len1, current_buffer, 0); | |
2926 | graft_intervals_into_buffer (tmp_interval_mid, start1 + len2, | |
2927 | len_mid, current_buffer, 0); | |
2928 | graft_intervals_into_buffer (tmp_interval2, start1, | |
2929 | len2, current_buffer, 0); | |
2930 | #endif /* USE_TEXT_PROPERTIES */ | |
2931 | } | |
2932 | else | |
2933 | /* Second region smaller than first. */ | |
2934 | { | |
b229b8d1 RS |
2935 | record_change (start1, (end2 - start1)); |
2936 | modify_region (current_buffer, start1, end2); | |
2937 | ||
2938 | #ifdef USE_TEXT_PROPERTIES | |
2939 | tmp_interval1 = copy_intervals (cur_intv, start1, len1); | |
2940 | tmp_interval_mid = copy_intervals (cur_intv, end1, len_mid); | |
2941 | tmp_interval2 = copy_intervals (cur_intv, start2, len2); | |
09dbcf71 RS |
2942 | Fset_text_properties (make_number (start1), make_number (end2), |
2943 | Qnil, Qnil); | |
b229b8d1 RS |
2944 | #endif /* USE_TEXT_PROPERTIES */ |
2945 | ||
3c6bc7d0 | 2946 | /* holds region 1 */ |
ec1c14f6 RS |
2947 | if (len1_byte > 20000) |
2948 | temp = (unsigned char *) xmalloc (len1_byte); | |
3c6bc7d0 | 2949 | else |
ec1c14f6 RS |
2950 | temp = (unsigned char *) alloca (len1_byte); |
2951 | start1_addr = BUF_CHAR_ADDRESS (current_buffer, start1_byte); | |
2952 | start2_addr = BUF_CHAR_ADDRESS (current_buffer, start2_byte); | |
2953 | bcopy (start1_addr, temp, len1_byte); | |
2954 | bcopy (start2_addr, start1_addr, len2_byte); | |
2955 | bcopy (start1_addr + len1_byte, start1_addr + len2_byte, len_mid); | |
2956 | bcopy (temp, start1_addr + len2_byte + len_mid, len1_byte); | |
2957 | if (len1_byte > 20000) | |
3c6bc7d0 | 2958 | free (temp); |
b229b8d1 RS |
2959 | #ifdef USE_TEXT_PROPERTIES |
2960 | graft_intervals_into_buffer (tmp_interval1, end2 - len1, | |
2961 | len1, current_buffer, 0); | |
2962 | graft_intervals_into_buffer (tmp_interval_mid, start1 + len2, | |
2963 | len_mid, current_buffer, 0); | |
2964 | graft_intervals_into_buffer (tmp_interval2, start1, | |
2965 | len2, current_buffer, 0); | |
2966 | #endif /* USE_TEXT_PROPERTIES */ | |
2967 | } | |
2968 | } | |
2969 | ||
ec1c14f6 RS |
2970 | /* When doing multiple transpositions, it might be nice |
2971 | to optimize this. Perhaps the markers in any one buffer | |
2972 | should be organized in some sorted data tree. */ | |
b229b8d1 | 2973 | if (NILP (leave_markers)) |
8de1d5f0 | 2974 | { |
ec1c14f6 RS |
2975 | transpose_markers (start1, end1, start2, end2, |
2976 | start1_byte, start1_byte + len1_byte, | |
2977 | start2_byte, start2_byte + len2_byte); | |
8de1d5f0 KH |
2978 | fix_overlays_in_range (start1, end2); |
2979 | } | |
b229b8d1 RS |
2980 | |
2981 | return Qnil; | |
2982 | } | |
35692fe0 | 2983 | |
35692fe0 JB |
2984 | \f |
2985 | void | |
2986 | syms_of_editfns () | |
2987 | { | |
260e2e2a KH |
2988 | environbuf = 0; |
2989 | ||
2990 | Qbuffer_access_fontify_functions | |
2991 | = intern ("buffer-access-fontify-functions"); | |
2992 | staticpro (&Qbuffer_access_fontify_functions); | |
2993 | ||
2994 | DEFVAR_LISP ("buffer-access-fontify-functions", | |
2995 | &Vbuffer_access_fontify_functions, | |
2996 | "List of functions called by `buffer-substring' to fontify if necessary.\n\ | |
2997 | Each function is called with two arguments which specify the range\n\ | |
2998 | of the buffer being accessed."); | |
2999 | Vbuffer_access_fontify_functions = Qnil; | |
3000 | ||
af209db8 RS |
3001 | { |
3002 | Lisp_Object obuf; | |
3003 | extern Lisp_Object Vprin1_to_string_buffer; | |
3004 | obuf = Fcurrent_buffer (); | |
3005 | /* Do this here, because init_buffer_once is too early--it won't work. */ | |
3006 | Fset_buffer (Vprin1_to_string_buffer); | |
3007 | /* Make sure buffer-access-fontify-functions is nil in this buffer. */ | |
3008 | Fset (Fmake_local_variable (intern ("buffer-access-fontify-functions")), | |
3009 | Qnil); | |
3010 | Fset_buffer (obuf); | |
3011 | } | |
3012 | ||
0b6fd023 | 3013 | DEFVAR_LISP ("buffer-access-fontified-property", |
260e2e2a KH |
3014 | &Vbuffer_access_fontified_property, |
3015 | "Property which (if non-nil) indicates text has been fontified.\n\ | |
3016 | `buffer-substring' need not call the `buffer-access-fontify-functions'\n\ | |
3017 | functions if all the text being accessed has this property."); | |
3018 | Vbuffer_access_fontified_property = Qnil; | |
3019 | ||
f43754f6 KH |
3020 | DEFVAR_LISP ("system-name", &Vsystem_name, |
3021 | "The name of the machine Emacs is running on."); | |
3022 | ||
3023 | DEFVAR_LISP ("user-full-name", &Vuser_full_name, | |
3024 | "The full name of the user logged in."); | |
3025 | ||
35b34f72 | 3026 | DEFVAR_LISP ("user-login-name", &Vuser_login_name, |
f43754f6 KH |
3027 | "The user's name, taken from environment variables if possible."); |
3028 | ||
35b34f72 | 3029 | DEFVAR_LISP ("user-real-login-name", &Vuser_real_login_name, |
f43754f6 | 3030 | "The user's name, based upon the real uid only."); |
35692fe0 JB |
3031 | |
3032 | defsubr (&Schar_equal); | |
3033 | defsubr (&Sgoto_char); | |
3034 | defsubr (&Sstring_to_char); | |
3035 | defsubr (&Schar_to_string); | |
3036 | defsubr (&Sbuffer_substring); | |
260e2e2a | 3037 | defsubr (&Sbuffer_substring_no_properties); |
35692fe0 JB |
3038 | defsubr (&Sbuffer_string); |
3039 | ||
3040 | defsubr (&Spoint_marker); | |
3041 | defsubr (&Smark_marker); | |
3042 | defsubr (&Spoint); | |
3043 | defsubr (&Sregion_beginning); | |
3044 | defsubr (&Sregion_end); | |
7df74da6 RS |
3045 | |
3046 | defsubr (&Sline_beginning_position); | |
3047 | defsubr (&Sline_end_position); | |
3048 | ||
35692fe0 JB |
3049 | /* defsubr (&Smark); */ |
3050 | /* defsubr (&Sset_mark); */ | |
3051 | defsubr (&Ssave_excursion); | |
4bc8c7d2 | 3052 | defsubr (&Ssave_current_buffer); |
35692fe0 JB |
3053 | |
3054 | defsubr (&Sbufsize); | |
3055 | defsubr (&Spoint_max); | |
3056 | defsubr (&Spoint_min); | |
3057 | defsubr (&Spoint_min_marker); | |
3058 | defsubr (&Spoint_max_marker); | |
7df74da6 | 3059 | defsubr (&Sposition_bytes); |
c9ed721d | 3060 | |
35692fe0 JB |
3061 | defsubr (&Sbobp); |
3062 | defsubr (&Seobp); | |
3063 | defsubr (&Sbolp); | |
3064 | defsubr (&Seolp); | |
850a8179 JB |
3065 | defsubr (&Sfollowing_char); |
3066 | defsubr (&Sprevious_char); | |
35692fe0 | 3067 | defsubr (&Schar_after); |
fb8106e8 | 3068 | defsubr (&Schar_before); |
35692fe0 JB |
3069 | defsubr (&Sinsert); |
3070 | defsubr (&Sinsert_before_markers); | |
be91036a RS |
3071 | defsubr (&Sinsert_and_inherit); |
3072 | defsubr (&Sinsert_and_inherit_before_markers); | |
35692fe0 JB |
3073 | defsubr (&Sinsert_char); |
3074 | ||
3075 | defsubr (&Suser_login_name); | |
3076 | defsubr (&Suser_real_login_name); | |
3077 | defsubr (&Suser_uid); | |
3078 | defsubr (&Suser_real_uid); | |
3079 | defsubr (&Suser_full_name); | |
7fd233b3 | 3080 | defsubr (&Semacs_pid); |
d940e0e4 | 3081 | defsubr (&Scurrent_time); |
a82d387c | 3082 | defsubr (&Sformat_time_string); |
4691c06d | 3083 | defsubr (&Sdecode_time); |
cce7b8a0 | 3084 | defsubr (&Sencode_time); |
35692fe0 | 3085 | defsubr (&Scurrent_time_string); |
c2662aea | 3086 | defsubr (&Scurrent_time_zone); |
143cb9a9 | 3087 | defsubr (&Sset_time_zone_rule); |
35692fe0 | 3088 | defsubr (&Ssystem_name); |
35692fe0 | 3089 | defsubr (&Smessage); |
cacc3e2c RS |
3090 | defsubr (&Smessage_box); |
3091 | defsubr (&Smessage_or_box); | |
b14dda8a | 3092 | defsubr (&Scurrent_message); |
35692fe0 | 3093 | defsubr (&Sformat); |
35692fe0 JB |
3094 | |
3095 | defsubr (&Sinsert_buffer_substring); | |
e9cf2084 | 3096 | defsubr (&Scompare_buffer_substrings); |
35692fe0 JB |
3097 | defsubr (&Ssubst_char_in_region); |
3098 | defsubr (&Stranslate_region); | |
3099 | defsubr (&Sdelete_region); | |
3100 | defsubr (&Swiden); | |
3101 | defsubr (&Snarrow_to_region); | |
3102 | defsubr (&Ssave_restriction); | |
b229b8d1 | 3103 | defsubr (&Stranspose_regions); |
35692fe0 | 3104 | } |