Commit | Line | Data |
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35692fe0 | 1 | /* Lisp functions pertaining to editing. |
0b5538bd TTN |
2 | Copyright (C) 1985, 1986, 1987, 1989, 1993, 1994, 1995, 1996, |
3 | 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, | |
c5c6b2cc | 4 | 2005, 2006, 2007 Free Software Foundation, Inc. |
35692fe0 JB |
5 | |
6 | This file is part of GNU Emacs. | |
7 | ||
8 | GNU Emacs is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
7c938215 | 10 | the Free Software Foundation; either version 2, or (at your option) |
35692fe0 JB |
11 | any later version. |
12 | ||
13 | GNU Emacs is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with GNU Emacs; see the file COPYING. If not, write to | |
4fc5845f LK |
20 | the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
21 | Boston, MA 02110-1301, USA. */ | |
35692fe0 JB |
22 | |
23 | ||
18160b98 | 24 | #include <config.h> |
68c45bf0 | 25 | #include <sys/types.h> |
3c14598c | 26 | #include <stdio.h> |
bfb61299 | 27 | |
5b9c0a1d | 28 | #ifdef HAVE_PWD_H |
35692fe0 | 29 | #include <pwd.h> |
bfb61299 JB |
30 | #endif |
31 | ||
dfcf069d AS |
32 | #ifdef HAVE_UNISTD_H |
33 | #include <unistd.h> | |
34 | #endif | |
35 | ||
3bb9abc8 ST |
36 | #ifdef HAVE_SYS_UTSNAME_H |
37 | #include <sys/utsname.h> | |
38 | #endif | |
39 | ||
b17f9379 DN |
40 | #include "lisp.h" |
41 | ||
3c14598c EZ |
42 | /* systime.h includes <sys/time.h> which, on some systems, is required |
43 | for <sys/resource.h>; thus systime.h must be included before | |
44 | <sys/resource.h> */ | |
45 | #include "systime.h" | |
21acf124 ST |
46 | |
47 | #if defined HAVE_SYS_RESOURCE_H | |
4211ee7d EZ |
48 | #include <sys/resource.h> |
49 | #endif | |
50 | ||
409847a1 RS |
51 | #include <ctype.h> |
52 | ||
74d6d8c5 | 53 | #include "intervals.h" |
35692fe0 | 54 | #include "buffer.h" |
fb8106e8 | 55 | #include "charset.h" |
68c45bf0 | 56 | #include "coding.h" |
0ae83348 | 57 | #include "frame.h" |
35692fe0 | 58 | #include "window.h" |
b91834c3 | 59 | #include "blockinput.h" |
35692fe0 | 60 | |
ea229bec GM |
61 | #ifdef STDC_HEADERS |
62 | #include <float.h> | |
63 | #define MAX_10_EXP DBL_MAX_10_EXP | |
64 | #else | |
65 | #define MAX_10_EXP 310 | |
66 | #endif | |
67 | ||
a03eaf1c RS |
68 | #ifndef NULL |
69 | #define NULL 0 | |
70 | #endif | |
71 | ||
f12ef5eb | 72 | #ifndef USE_CRT_DLL |
c59b5089 | 73 | extern char **environ; |
f12ef5eb AI |
74 | #endif |
75 | ||
aac18aa4 PE |
76 | #define TM_YEAR_BASE 1900 |
77 | ||
d65b4235 PE |
78 | /* Nonzero if TM_YEAR is a struct tm's tm_year value that causes |
79 | asctime to have well-defined behavior. */ | |
80 | #ifndef TM_YEAR_IN_ASCTIME_RANGE | |
81 | # define TM_YEAR_IN_ASCTIME_RANGE(tm_year) \ | |
82 | (1000 - TM_YEAR_BASE <= (tm_year) && (tm_year) <= 9999 - TM_YEAR_BASE) | |
83 | #endif | |
84 | ||
acb7cc89 GM |
85 | extern size_t emacs_strftimeu P_ ((char *, size_t, const char *, |
86 | const struct tm *, int)); | |
87 | static int tm_diff P_ ((struct tm *, struct tm *)); | |
9ac741c5 | 88 | static void find_field P_ ((Lisp_Object, Lisp_Object, Lisp_Object, int *, Lisp_Object, int *)); |
acb7cc89 GM |
89 | static void update_buffer_properties P_ ((int, int)); |
90 | static Lisp_Object region_limit P_ ((int)); | |
5c5718b6 | 91 | int lisp_time_argument P_ ((Lisp_Object, time_t *, int *)); |
acb7cc89 GM |
92 | static size_t emacs_memftimeu P_ ((char *, size_t, const char *, |
93 | size_t, const struct tm *, int)); | |
439e8af4 | 94 | static void general_insert_function P_ ((void (*) (const unsigned char *, int), |
acb7cc89 GM |
95 | void (*) (Lisp_Object, int, int, int, |
96 | int, int), | |
97 | int, int, Lisp_Object *)); | |
98 | static Lisp_Object subst_char_in_region_unwind P_ ((Lisp_Object)); | |
99 | static Lisp_Object subst_char_in_region_unwind_1 P_ ((Lisp_Object)); | |
100 | static void transpose_markers P_ ((int, int, int, int, int, int, int, int)); | |
260e2e2a | 101 | |
8892f40b GM |
102 | #ifdef HAVE_INDEX |
103 | extern char *index P_ ((const char *, int)); | |
104 | #endif | |
105 | ||
260e2e2a KH |
106 | Lisp_Object Vbuffer_access_fontify_functions; |
107 | Lisp_Object Qbuffer_access_fontify_functions; | |
108 | Lisp_Object Vbuffer_access_fontified_property; | |
b1b0ee5a | 109 | |
acb7cc89 | 110 | Lisp_Object Fuser_full_name P_ ((Lisp_Object)); |
e3ed8469 | 111 | |
9a74e7e5 GM |
112 | /* Non-nil means don't stop at field boundary in text motion commands. */ |
113 | ||
114 | Lisp_Object Vinhibit_field_text_motion; | |
115 | ||
35692fe0 JB |
116 | /* Some static data, and a function to initialize it for each run */ |
117 | ||
118 | Lisp_Object Vsystem_name; | |
35b34f72 KH |
119 | Lisp_Object Vuser_real_login_name; /* login name of current user ID */ |
120 | Lisp_Object Vuser_full_name; /* full name of current user */ | |
121 | Lisp_Object Vuser_login_name; /* user name from LOGNAME or USER */ | |
3bb9abc8 | 122 | Lisp_Object Voperating_system_release; /* Operating System Release */ |
35692fe0 | 123 | |
acb7cc89 GM |
124 | /* Symbol for the text property used to mark fields. */ |
125 | ||
126 | Lisp_Object Qfield; | |
127 | ||
128 | /* A special value for Qfield properties. */ | |
129 | ||
130 | Lisp_Object Qboundary; | |
131 | ||
132 | ||
35692fe0 JB |
133 | void |
134 | init_editfns () | |
135 | { | |
52b14ac0 | 136 | char *user_name; |
2ea0266e | 137 | register unsigned char *p; |
35692fe0 | 138 | struct passwd *pw; /* password entry for the current user */ |
35692fe0 JB |
139 | Lisp_Object tem; |
140 | ||
141 | /* Set up system_name even when dumping. */ | |
ac988277 | 142 | init_system_name (); |
35692fe0 JB |
143 | |
144 | #ifndef CANNOT_DUMP | |
145 | /* Don't bother with this on initial start when just dumping out */ | |
146 | if (!initialized) | |
147 | return; | |
148 | #endif /* not CANNOT_DUMP */ | |
149 | ||
150 | pw = (struct passwd *) getpwuid (getuid ()); | |
87485d6f MW |
151 | #ifdef MSDOS |
152 | /* We let the real user name default to "root" because that's quite | |
153 | accurate on MSDOG and because it lets Emacs find the init file. | |
154 | (The DVX libraries override the Djgpp libraries here.) */ | |
35b34f72 | 155 | Vuser_real_login_name = build_string (pw ? pw->pw_name : "root"); |
87485d6f | 156 | #else |
35b34f72 | 157 | Vuser_real_login_name = build_string (pw ? pw->pw_name : "unknown"); |
87485d6f | 158 | #endif |
35692fe0 | 159 | |
52b14ac0 JB |
160 | /* Get the effective user name, by consulting environment variables, |
161 | or the effective uid if those are unset. */ | |
2c9ae24e | 162 | user_name = (char *) getenv ("LOGNAME"); |
35692fe0 | 163 | if (!user_name) |
4691c06d RS |
164 | #ifdef WINDOWSNT |
165 | user_name = (char *) getenv ("USERNAME"); /* it's USERNAME on NT */ | |
166 | #else /* WINDOWSNT */ | |
2c9ae24e | 167 | user_name = (char *) getenv ("USER"); |
4691c06d | 168 | #endif /* WINDOWSNT */ |
52b14ac0 JB |
169 | if (!user_name) |
170 | { | |
171 | pw = (struct passwd *) getpwuid (geteuid ()); | |
172 | user_name = (char *) (pw ? pw->pw_name : "unknown"); | |
173 | } | |
35b34f72 | 174 | Vuser_login_name = build_string (user_name); |
35692fe0 | 175 | |
52b14ac0 JB |
176 | /* If the user name claimed in the environment vars differs from |
177 | the real uid, use the claimed name to find the full name. */ | |
35b34f72 | 178 | tem = Fstring_equal (Vuser_login_name, Vuser_real_login_name); |
3415b0e9 RS |
179 | Vuser_full_name = Fuser_full_name (NILP (tem)? make_number (geteuid()) |
180 | : Vuser_login_name); | |
34a7a267 | 181 | |
8f1e2d16 | 182 | p = (unsigned char *) getenv ("NAME"); |
9d36d071 RS |
183 | if (p) |
184 | Vuser_full_name = build_string (p); | |
3347526c RS |
185 | else if (NILP (Vuser_full_name)) |
186 | Vuser_full_name = build_string ("unknown"); | |
3bb9abc8 ST |
187 | |
188 | #ifdef HAVE_SYS_UTSNAME_H | |
189 | { | |
190 | struct utsname uts; | |
191 | uname (&uts); | |
192 | Voperating_system_release = build_string (uts.release); | |
193 | } | |
194 | #else | |
195 | Voperating_system_release = Qnil; | |
196 | #endif | |
35692fe0 JB |
197 | } |
198 | \f | |
199 | DEFUN ("char-to-string", Fchar_to_string, Schar_to_string, 1, 1, 0, | |
06283081 PJ |
200 | doc: /* Convert arg CHAR to a string containing that character. |
201 | usage: (char-to-string CHAR) */) | |
7ee72033 | 202 | (character) |
2591ec64 | 203 | Lisp_Object character; |
35692fe0 | 204 | { |
fb8106e8 | 205 | int len; |
d5c2c403 | 206 | unsigned char str[MAX_MULTIBYTE_LENGTH]; |
fb8106e8 | 207 | |
b7826503 | 208 | CHECK_NUMBER (character); |
35692fe0 | 209 | |
603a8d59 KH |
210 | len = (SINGLE_BYTE_CHAR_P (XFASTINT (character)) |
211 | ? (*str = (unsigned char)(XFASTINT (character)), 1) | |
212 | : char_to_string (XFASTINT (character), str)); | |
5f75e666 | 213 | return make_string_from_bytes (str, 1, len); |
35692fe0 JB |
214 | } |
215 | ||
216 | DEFUN ("string-to-char", Fstring_to_char, Sstring_to_char, 1, 1, 0, | |
7ee72033 MB |
217 | doc: /* Convert arg STRING to a character, the first character of that string. |
218 | A multibyte character is handled correctly. */) | |
219 | (string) | |
2591ec64 | 220 | register Lisp_Object string; |
35692fe0 JB |
221 | { |
222 | register Lisp_Object val; | |
b7826503 | 223 | CHECK_STRING (string); |
4e491f8d | 224 | if (SCHARS (string)) |
d9d851ea KH |
225 | { |
226 | if (STRING_MULTIBYTE (string)) | |
4e491f8d | 227 | XSETFASTINT (val, STRING_CHAR (SDATA (string), SBYTES (string))); |
d9d851ea | 228 | else |
4e491f8d | 229 | XSETFASTINT (val, SREF (string, 0)); |
d9d851ea | 230 | } |
35692fe0 | 231 | else |
55561c63 | 232 | XSETFASTINT (val, 0); |
35692fe0 JB |
233 | return val; |
234 | } | |
235 | \f | |
236 | static Lisp_Object | |
ec1c14f6 RS |
237 | buildmark (charpos, bytepos) |
238 | int charpos, bytepos; | |
35692fe0 JB |
239 | { |
240 | register Lisp_Object mark; | |
241 | mark = Fmake_marker (); | |
ec1c14f6 | 242 | set_marker_both (mark, Qnil, charpos, bytepos); |
35692fe0 JB |
243 | return mark; |
244 | } | |
245 | ||
246 | DEFUN ("point", Fpoint, Spoint, 0, 0, 0, | |
7ee72033 MB |
247 | doc: /* Return value of point, as an integer. |
248 | Beginning of buffer is position (point-min). */) | |
249 | () | |
35692fe0 JB |
250 | { |
251 | Lisp_Object temp; | |
6ec8bbd2 | 252 | XSETFASTINT (temp, PT); |
35692fe0 JB |
253 | return temp; |
254 | } | |
255 | ||
256 | DEFUN ("point-marker", Fpoint_marker, Spoint_marker, 0, 0, 0, | |
7ee72033 MB |
257 | doc: /* Return value of point, as a marker object. */) |
258 | () | |
35692fe0 | 259 | { |
ec1c14f6 | 260 | return buildmark (PT, PT_BYTE); |
35692fe0 JB |
261 | } |
262 | ||
263 | int | |
264 | clip_to_bounds (lower, num, upper) | |
265 | int lower, num, upper; | |
266 | { | |
267 | if (num < lower) | |
268 | return lower; | |
269 | else if (num > upper) | |
270 | return upper; | |
271 | else | |
272 | return num; | |
273 | } | |
274 | ||
275 | DEFUN ("goto-char", Fgoto_char, Sgoto_char, 1, 1, "NGoto char: ", | |
7ee72033 | 276 | doc: /* Set point to POSITION, a number or marker. |
8696b557 EZ |
277 | Beginning of buffer is position (point-min), end is (point-max). |
278 | ||
279 | The return value is POSITION. */) | |
7ee72033 | 280 | (position) |
2591ec64 | 281 | register Lisp_Object position; |
35692fe0 | 282 | { |
fb8106e8 | 283 | int pos; |
fb8106e8 | 284 | |
72ef82ec RS |
285 | if (MARKERP (position) |
286 | && current_buffer == XMARKER (position)->buffer) | |
ec1c14f6 RS |
287 | { |
288 | pos = marker_position (position); | |
289 | if (pos < BEGV) | |
290 | SET_PT_BOTH (BEGV, BEGV_BYTE); | |
291 | else if (pos > ZV) | |
292 | SET_PT_BOTH (ZV, ZV_BYTE); | |
293 | else | |
294 | SET_PT_BOTH (pos, marker_byte_position (position)); | |
295 | ||
296 | return position; | |
297 | } | |
298 | ||
b7826503 | 299 | CHECK_NUMBER_COERCE_MARKER (position); |
35692fe0 | 300 | |
fb8106e8 | 301 | pos = clip_to_bounds (BEGV, XINT (position), ZV); |
fb8106e8 | 302 | SET_PT (pos); |
2591ec64 | 303 | return position; |
35692fe0 JB |
304 | } |
305 | ||
acb7cc89 GM |
306 | |
307 | /* Return the start or end position of the region. | |
308 | BEGINNINGP non-zero means return the start. | |
309 | If there is no region active, signal an error. */ | |
310 | ||
35692fe0 JB |
311 | static Lisp_Object |
312 | region_limit (beginningp) | |
313 | int beginningp; | |
314 | { | |
646d9d18 | 315 | extern Lisp_Object Vmark_even_if_inactive; /* Defined in callint.c. */ |
acb7cc89 | 316 | Lisp_Object m; |
177c0ea7 | 317 | |
acb7cc89 GM |
318 | if (!NILP (Vtransient_mark_mode) |
319 | && NILP (Vmark_even_if_inactive) | |
c9dd14e1 | 320 | && NILP (current_buffer->mark_active)) |
8a0ff744 | 321 | xsignal0 (Qmark_inactive); |
177c0ea7 | 322 | |
35692fe0 | 323 | m = Fmarker_position (current_buffer->mark); |
acb7cc89 | 324 | if (NILP (m)) |
7b5ad687 | 325 | error ("The mark is not set now, so there is no region"); |
177c0ea7 | 326 | |
2063d89c | 327 | if ((PT < XFASTINT (m)) == (beginningp != 0)) |
acb7cc89 GM |
328 | m = make_number (PT); |
329 | return m; | |
35692fe0 JB |
330 | } |
331 | ||
332 | DEFUN ("region-beginning", Fregion_beginning, Sregion_beginning, 0, 0, 0, | |
7ee72033 MB |
333 | doc: /* Return position of beginning of region, as an integer. */) |
334 | () | |
35692fe0 | 335 | { |
acb7cc89 | 336 | return region_limit (1); |
35692fe0 JB |
337 | } |
338 | ||
339 | DEFUN ("region-end", Fregion_end, Sregion_end, 0, 0, 0, | |
7ee72033 MB |
340 | doc: /* Return position of end of region, as an integer. */) |
341 | () | |
35692fe0 | 342 | { |
acb7cc89 | 343 | return region_limit (0); |
35692fe0 JB |
344 | } |
345 | ||
35692fe0 | 346 | DEFUN ("mark-marker", Fmark_marker, Smark_marker, 0, 0, 0, |
7ee72033 | 347 | doc: /* Return this buffer's mark, as a marker object. |
a1f17501 | 348 | Watch out! Moving this marker changes the mark position. |
7ee72033 MB |
349 | If you set the marker not to point anywhere, the buffer will have no mark. */) |
350 | () | |
35692fe0 JB |
351 | { |
352 | return current_buffer->mark; | |
353 | } | |
acb7cc89 | 354 | |
c9ed721d | 355 | \f |
58401a34 SM |
356 | /* Find all the overlays in the current buffer that touch position POS. |
357 | Return the number found, and store them in a vector in VEC | |
358 | of length LEN. */ | |
359 | ||
360 | static int | |
361 | overlays_around (pos, vec, len) | |
362 | int pos; | |
363 | Lisp_Object *vec; | |
364 | int len; | |
365 | { | |
88006f77 SM |
366 | Lisp_Object overlay, start, end; |
367 | struct Lisp_Overlay *tail; | |
58401a34 SM |
368 | int startpos, endpos; |
369 | int idx = 0; | |
370 | ||
88006f77 | 371 | for (tail = current_buffer->overlays_before; tail; tail = tail->next) |
58401a34 | 372 | { |
88006f77 | 373 | XSETMISC (overlay, tail); |
58401a34 SM |
374 | |
375 | end = OVERLAY_END (overlay); | |
376 | endpos = OVERLAY_POSITION (end); | |
377 | if (endpos < pos) | |
378 | break; | |
379 | start = OVERLAY_START (overlay); | |
380 | startpos = OVERLAY_POSITION (start); | |
381 | if (startpos <= pos) | |
382 | { | |
383 | if (idx < len) | |
384 | vec[idx] = overlay; | |
385 | /* Keep counting overlays even if we can't return them all. */ | |
386 | idx++; | |
387 | } | |
388 | } | |
389 | ||
88006f77 | 390 | for (tail = current_buffer->overlays_after; tail; tail = tail->next) |
58401a34 | 391 | { |
88006f77 | 392 | XSETMISC (overlay, tail); |
58401a34 SM |
393 | |
394 | start = OVERLAY_START (overlay); | |
395 | startpos = OVERLAY_POSITION (start); | |
396 | if (pos < startpos) | |
397 | break; | |
398 | end = OVERLAY_END (overlay); | |
399 | endpos = OVERLAY_POSITION (end); | |
400 | if (pos <= endpos) | |
401 | { | |
402 | if (idx < len) | |
403 | vec[idx] = overlay; | |
404 | idx++; | |
405 | } | |
406 | } | |
407 | ||
408 | return idx; | |
409 | } | |
410 | ||
411 | /* Return the value of property PROP, in OBJECT at POSITION. | |
412 | It's the value of PROP that a char inserted at POSITION would get. | |
413 | OBJECT is optional and defaults to the current buffer. | |
414 | If OBJECT is a buffer, then overlay properties are considered as well as | |
415 | text properties. | |
416 | If OBJECT is a window, then that window's buffer is used, but | |
417 | window-specific overlays are considered only if they are associated | |
418 | with OBJECT. */ | |
538f9462 | 419 | Lisp_Object |
58401a34 SM |
420 | get_pos_property (position, prop, object) |
421 | Lisp_Object position, object; | |
422 | register Lisp_Object prop; | |
423 | { | |
58401a34 SM |
424 | CHECK_NUMBER_COERCE_MARKER (position); |
425 | ||
426 | if (NILP (object)) | |
427 | XSETBUFFER (object, current_buffer); | |
dfe6cbf8 SM |
428 | else if (WINDOWP (object)) |
429 | object = XWINDOW (object)->buffer; | |
430 | ||
431 | if (!BUFFERP (object)) | |
432 | /* pos-property only makes sense in buffers right now, since strings | |
433 | have no overlays and no notion of insertion for which stickiness | |
434 | could be obeyed. */ | |
435 | return Fget_text_property (position, prop, object); | |
436 | else | |
58401a34 SM |
437 | { |
438 | int posn = XINT (position); | |
439 | int noverlays; | |
440 | Lisp_Object *overlay_vec, tem; | |
441 | struct buffer *obuf = current_buffer; | |
442 | ||
443 | set_buffer_temp (XBUFFER (object)); | |
444 | ||
445 | /* First try with room for 40 overlays. */ | |
446 | noverlays = 40; | |
447 | overlay_vec = (Lisp_Object *) alloca (noverlays * sizeof (Lisp_Object)); | |
448 | noverlays = overlays_around (posn, overlay_vec, noverlays); | |
449 | ||
450 | /* If there are more than 40, | |
451 | make enough space for all, and try again. */ | |
452 | if (noverlays > 40) | |
453 | { | |
454 | overlay_vec = (Lisp_Object *) alloca (noverlays * sizeof (Lisp_Object)); | |
455 | noverlays = overlays_around (posn, overlay_vec, noverlays); | |
456 | } | |
457 | noverlays = sort_overlays (overlay_vec, noverlays, NULL); | |
458 | ||
459 | set_buffer_temp (obuf); | |
460 | ||
461 | /* Now check the overlays in order of decreasing priority. */ | |
462 | while (--noverlays >= 0) | |
463 | { | |
464 | Lisp_Object ol = overlay_vec[noverlays]; | |
465 | tem = Foverlay_get (ol, prop); | |
466 | if (!NILP (tem)) | |
467 | { | |
468 | /* Check the overlay is indeed active at point. */ | |
469 | Lisp_Object start = OVERLAY_START (ol), finish = OVERLAY_END (ol); | |
470 | if ((OVERLAY_POSITION (start) == posn | |
471 | && XMARKER (start)->insertion_type == 1) | |
472 | || (OVERLAY_POSITION (finish) == posn | |
473 | && XMARKER (finish)->insertion_type == 0)) | |
474 | ; /* The overlay will not cover a char inserted at point. */ | |
475 | else | |
476 | { | |
477 | return tem; | |
478 | } | |
479 | } | |
480 | } | |
177c0ea7 | 481 | |
dfe6cbf8 SM |
482 | { /* Now check the text-properties. */ |
483 | int stickiness = text_property_stickiness (prop, position, object); | |
484 | if (stickiness > 0) | |
485 | return Fget_text_property (position, prop, object); | |
486 | else if (stickiness < 0 | |
487 | && XINT (position) > BUF_BEGV (XBUFFER (object))) | |
488 | return Fget_text_property (make_number (XINT (position) - 1), | |
489 | prop, object); | |
490 | else | |
491 | return Qnil; | |
492 | } | |
58401a34 | 493 | } |
58401a34 SM |
494 | } |
495 | ||
a3caef99 | 496 | /* Find the field surrounding POS in *BEG and *END. If POS is nil, |
59062dce | 497 | the value of point is used instead. If BEG or END is null, |
acb7cc89 | 498 | means don't store the beginning or end of the field. |
a3caef99 | 499 | |
9ac741c5 MB |
500 | BEG_LIMIT and END_LIMIT serve to limit the ranged of the returned |
501 | results; they do not effect boundary behavior. | |
502 | ||
51d793da MB |
503 | If MERGE_AT_BOUNDARY is nonzero, then if POS is at the very first |
504 | position of a field, then the beginning of the previous field is | |
505 | returned instead of the beginning of POS's field (since the end of a | |
506 | field is actually also the beginning of the next input field, this | |
507 | behavior is sometimes useful). Additionally in the MERGE_AT_BOUNDARY | |
ee547125 MB |
508 | true case, if two fields are separated by a field with the special |
509 | value `boundary', and POS lies within it, then the two separated | |
510 | fields are considered to be adjacent, and POS between them, when | |
51d793da MB |
511 | finding the beginning and ending of the "merged" field. |
512 | ||
513 | Either BEG or END may be 0, in which case the corresponding value | |
514 | is not stored. */ | |
a3caef99 | 515 | |
acb7cc89 | 516 | static void |
9ac741c5 | 517 | find_field (pos, merge_at_boundary, beg_limit, beg, end_limit, end) |
0daf6e8d GM |
518 | Lisp_Object pos; |
519 | Lisp_Object merge_at_boundary; | |
9ac741c5 | 520 | Lisp_Object beg_limit, end_limit; |
0daf6e8d GM |
521 | int *beg, *end; |
522 | { | |
ee547125 MB |
523 | /* Fields right before and after the point. */ |
524 | Lisp_Object before_field, after_field; | |
a3caef99 RS |
525 | /* 1 if POS counts as the start of a field. */ |
526 | int at_field_start = 0; | |
527 | /* 1 if POS counts as the end of a field. */ | |
528 | int at_field_end = 0; | |
ee547125 | 529 | |
0daf6e8d GM |
530 | if (NILP (pos)) |
531 | XSETFASTINT (pos, PT); | |
532 | else | |
b7826503 | 533 | CHECK_NUMBER_COERCE_MARKER (pos); |
0daf6e8d | 534 | |
acb7cc89 | 535 | after_field |
58401a34 | 536 | = get_char_property_and_overlay (pos, Qfield, Qnil, NULL); |
acb7cc89 GM |
537 | before_field |
538 | = (XFASTINT (pos) > BEGV | |
7ae1c032 | 539 | ? get_char_property_and_overlay (make_number (XINT (pos) - 1), |
58401a34 | 540 | Qfield, Qnil, NULL) |
e477bb04 KL |
541 | /* Using nil here would be a more obvious choice, but it would |
542 | fail when the buffer starts with a non-sticky field. */ | |
543 | : after_field); | |
ee547125 MB |
544 | |
545 | /* See if we need to handle the case where MERGE_AT_BOUNDARY is nil | |
546 | and POS is at beginning of a field, which can also be interpreted | |
547 | as the end of the previous field. Note that the case where if | |
548 | MERGE_AT_BOUNDARY is non-nil (see function comment) is actually the | |
549 | more natural one; then we avoid treating the beginning of a field | |
550 | specially. */ | |
58401a34 | 551 | if (NILP (merge_at_boundary)) |
ee547125 | 552 | { |
58401a34 SM |
553 | Lisp_Object field = get_pos_property (pos, Qfield, Qnil); |
554 | if (!EQ (field, after_field)) | |
ee547125 | 555 | at_field_end = 1; |
58401a34 SM |
556 | if (!EQ (field, before_field)) |
557 | at_field_start = 1; | |
2db1186a SM |
558 | if (NILP (field) && at_field_start && at_field_end) |
559 | /* If an inserted char would have a nil field while the surrounding | |
560 | text is non-nil, we're probably not looking at a | |
561 | zero-length field, but instead at a non-nil field that's | |
562 | not intended for editing (such as comint's prompts). */ | |
563 | at_field_end = at_field_start = 0; | |
0daf6e8d GM |
564 | } |
565 | ||
ee547125 MB |
566 | /* Note about special `boundary' fields: |
567 | ||
568 | Consider the case where the point (`.') is between the fields `x' and `y': | |
569 | ||
570 | xxxx.yyyy | |
571 | ||
572 | In this situation, if merge_at_boundary is true, we consider the | |
573 | `x' and `y' fields as forming one big merged field, and so the end | |
574 | of the field is the end of `y'. | |
575 | ||
576 | However, if `x' and `y' are separated by a special `boundary' field | |
577 | (a field with a `field' char-property of 'boundary), then we ignore | |
578 | this special field when merging adjacent fields. Here's the same | |
579 | situation, but with a `boundary' field between the `x' and `y' fields: | |
580 | ||
581 | xxx.BBBByyyy | |
582 | ||
583 | Here, if point is at the end of `x', the beginning of `y', or | |
584 | anywhere in-between (within the `boundary' field), we merge all | |
585 | three fields and consider the beginning as being the beginning of | |
586 | the `x' field, and the end as being the end of the `y' field. */ | |
587 | ||
0daf6e8d | 588 | if (beg) |
acb7cc89 GM |
589 | { |
590 | if (at_field_start) | |
591 | /* POS is at the edge of a field, and we should consider it as | |
592 | the beginning of the following field. */ | |
593 | *beg = XFASTINT (pos); | |
594 | else | |
595 | /* Find the previous field boundary. */ | |
596 | { | |
58401a34 | 597 | Lisp_Object p = pos; |
acb7cc89 GM |
598 | if (!NILP (merge_at_boundary) && EQ (before_field, Qboundary)) |
599 | /* Skip a `boundary' field. */ | |
58401a34 | 600 | p = Fprevious_single_char_property_change (p, Qfield, Qnil, |
9ac741c5 | 601 | beg_limit); |
58401a34 SM |
602 | |
603 | p = Fprevious_single_char_property_change (p, Qfield, Qnil, | |
604 | beg_limit); | |
605 | *beg = NILP (p) ? BEGV : XFASTINT (p); | |
acb7cc89 GM |
606 | } |
607 | } | |
0daf6e8d GM |
608 | |
609 | if (end) | |
acb7cc89 GM |
610 | { |
611 | if (at_field_end) | |
612 | /* POS is at the edge of a field, and we should consider it as | |
613 | the end of the previous field. */ | |
614 | *end = XFASTINT (pos); | |
615 | else | |
616 | /* Find the next field boundary. */ | |
617 | { | |
618 | if (!NILP (merge_at_boundary) && EQ (after_field, Qboundary)) | |
619 | /* Skip a `boundary' field. */ | |
9ac741c5 MB |
620 | pos = Fnext_single_char_property_change (pos, Qfield, Qnil, |
621 | end_limit); | |
ee547125 | 622 | |
9ac741c5 MB |
623 | pos = Fnext_single_char_property_change (pos, Qfield, Qnil, |
624 | end_limit); | |
acb7cc89 GM |
625 | *end = NILP (pos) ? ZV : XFASTINT (pos); |
626 | } | |
627 | } | |
0daf6e8d | 628 | } |
acb7cc89 | 629 | |
0daf6e8d | 630 | \f |
d01f3570 | 631 | DEFUN ("delete-field", Fdelete_field, Sdelete_field, 0, 1, 0, |
7ee72033 | 632 | doc: /* Delete the field surrounding POS. |
a1f17501 | 633 | A field is a region of text with the same `field' property. |
f554db0f | 634 | If POS is nil, the value of point is used for POS. */) |
7ee72033 | 635 | (pos) |
0daf6e8d GM |
636 | Lisp_Object pos; |
637 | { | |
638 | int beg, end; | |
9ac741c5 | 639 | find_field (pos, Qnil, Qnil, &beg, Qnil, &end); |
0daf6e8d GM |
640 | if (beg != end) |
641 | del_range (beg, end); | |
d01f3570 | 642 | return Qnil; |
0daf6e8d GM |
643 | } |
644 | ||
645 | DEFUN ("field-string", Ffield_string, Sfield_string, 0, 1, 0, | |
7ee72033 | 646 | doc: /* Return the contents of the field surrounding POS as a string. |
a1f17501 | 647 | A field is a region of text with the same `field' property. |
f554db0f | 648 | If POS is nil, the value of point is used for POS. */) |
7ee72033 | 649 | (pos) |
0daf6e8d GM |
650 | Lisp_Object pos; |
651 | { | |
652 | int beg, end; | |
9ac741c5 | 653 | find_field (pos, Qnil, Qnil, &beg, Qnil, &end); |
0daf6e8d GM |
654 | return make_buffer_string (beg, end, 1); |
655 | } | |
656 | ||
657 | DEFUN ("field-string-no-properties", Ffield_string_no_properties, Sfield_string_no_properties, 0, 1, 0, | |
7ee72033 | 658 | doc: /* Return the contents of the field around POS, without text-properties. |
a1f17501 | 659 | A field is a region of text with the same `field' property. |
f554db0f | 660 | If POS is nil, the value of point is used for POS. */) |
7ee72033 | 661 | (pos) |
0daf6e8d GM |
662 | Lisp_Object pos; |
663 | { | |
664 | int beg, end; | |
9ac741c5 | 665 | find_field (pos, Qnil, Qnil, &beg, Qnil, &end); |
0daf6e8d GM |
666 | return make_buffer_string (beg, end, 0); |
667 | } | |
668 | ||
9ac741c5 | 669 | DEFUN ("field-beginning", Ffield_beginning, Sfield_beginning, 0, 3, 0, |
7ee72033 | 670 | doc: /* Return the beginning of the field surrounding POS. |
a1f17501 PJ |
671 | A field is a region of text with the same `field' property. |
672 | If POS is nil, the value of point is used for POS. | |
673 | If ESCAPE-FROM-EDGE is non-nil and POS is at the beginning of its | |
9ac741c5 MB |
674 | field, then the beginning of the *previous* field is returned. |
675 | If LIMIT is non-nil, it is a buffer position; if the beginning of the field | |
f554db0f | 676 | is before LIMIT, then LIMIT will be returned instead. */) |
9ac741c5 MB |
677 | (pos, escape_from_edge, limit) |
678 | Lisp_Object pos, escape_from_edge, limit; | |
0daf6e8d | 679 | { |
51d793da MB |
680 | int beg; |
681 | find_field (pos, escape_from_edge, limit, &beg, Qnil, 0); | |
682 | return make_number (beg); | |
0daf6e8d GM |
683 | } |
684 | ||
9ac741c5 | 685 | DEFUN ("field-end", Ffield_end, Sfield_end, 0, 3, 0, |
7ee72033 | 686 | doc: /* Return the end of the field surrounding POS. |
a1f17501 PJ |
687 | A field is a region of text with the same `field' property. |
688 | If POS is nil, the value of point is used for POS. | |
689 | If ESCAPE-FROM-EDGE is non-nil and POS is at the end of its field, | |
9ac741c5 MB |
690 | then the end of the *following* field is returned. |
691 | If LIMIT is non-nil, it is a buffer position; if the end of the field | |
f554db0f | 692 | is after LIMIT, then LIMIT will be returned instead. */) |
9ac741c5 MB |
693 | (pos, escape_from_edge, limit) |
694 | Lisp_Object pos, escape_from_edge, limit; | |
0daf6e8d GM |
695 | { |
696 | int end; | |
9ac741c5 | 697 | find_field (pos, escape_from_edge, Qnil, 0, limit, &end); |
0daf6e8d GM |
698 | return make_number (end); |
699 | } | |
700 | ||
ee547125 | 701 | DEFUN ("constrain-to-field", Fconstrain_to_field, Sconstrain_to_field, 2, 5, 0, |
7ee72033 | 702 | doc: /* Return the position closest to NEW-POS that is in the same field as OLD-POS. |
a1f17501 PJ |
703 | |
704 | A field is a region of text with the same `field' property. | |
705 | If NEW-POS is nil, then the current point is used instead, and set to the | |
706 | constrained position if that is different. | |
707 | ||
708 | If OLD-POS is at the boundary of two fields, then the allowable | |
709 | positions for NEW-POS depends on the value of the optional argument | |
710 | ESCAPE-FROM-EDGE: If ESCAPE-FROM-EDGE is nil, then NEW-POS is | |
711 | constrained to the field that has the same `field' char-property | |
712 | as any new characters inserted at OLD-POS, whereas if ESCAPE-FROM-EDGE | |
713 | is non-nil, NEW-POS is constrained to the union of the two adjacent | |
714 | fields. Additionally, if two fields are separated by another field with | |
715 | the special value `boundary', then any point within this special field is | |
716 | also considered to be `on the boundary'. | |
717 | ||
718 | If the optional argument ONLY-IN-LINE is non-nil and constraining | |
719 | NEW-POS would move it to a different line, NEW-POS is returned | |
720 | unconstrained. This useful for commands that move by line, like | |
721 | \\[next-line] or \\[beginning-of-line], which should generally respect field boundaries | |
722 | only in the case where they can still move to the right line. | |
723 | ||
724 | If the optional argument INHIBIT-CAPTURE-PROPERTY is non-nil, and OLD-POS has | |
725 | a non-nil property of that name, then any field boundaries are ignored. | |
726 | ||
7ee72033 MB |
727 | Field boundaries are not noticed if `inhibit-field-text-motion' is non-nil. */) |
728 | (new_pos, old_pos, escape_from_edge, only_in_line, inhibit_capture_property) | |
ee547125 MB |
729 | Lisp_Object new_pos, old_pos; |
730 | Lisp_Object escape_from_edge, only_in_line, inhibit_capture_property; | |
0daf6e8d GM |
731 | { |
732 | /* If non-zero, then the original point, before re-positioning. */ | |
733 | int orig_point = 0; | |
d63b4018 KR |
734 | int fwd; |
735 | Lisp_Object prev_old, prev_new; | |
aac18aa4 | 736 | |
0daf6e8d GM |
737 | if (NILP (new_pos)) |
738 | /* Use the current point, and afterwards, set it. */ | |
739 | { | |
740 | orig_point = PT; | |
741 | XSETFASTINT (new_pos, PT); | |
742 | } | |
743 | ||
e477bb04 KL |
744 | CHECK_NUMBER_COERCE_MARKER (new_pos); |
745 | CHECK_NUMBER_COERCE_MARKER (old_pos); | |
746 | ||
747 | fwd = (XFASTINT (new_pos) > XFASTINT (old_pos)); | |
748 | ||
749 | prev_old = make_number (XFASTINT (old_pos) - 1); | |
750 | prev_new = make_number (XFASTINT (new_pos) - 1); | |
aac18aa4 | 751 | |
ee5cd4db GM |
752 | if (NILP (Vinhibit_field_text_motion) |
753 | && !EQ (new_pos, old_pos) | |
42ab8e36 MB |
754 | && (!NILP (Fget_char_property (new_pos, Qfield, Qnil)) |
755 | || !NILP (Fget_char_property (old_pos, Qfield, Qnil)) | |
e477bb04 KL |
756 | /* To recognize field boundaries, we must also look at the |
757 | previous positions; we could use `get_pos_property' | |
758 | instead, but in itself that would fail inside non-sticky | |
759 | fields (like comint prompts). */ | |
760 | || (XFASTINT (new_pos) > BEGV | |
42ab8e36 | 761 | && !NILP (Fget_char_property (prev_new, Qfield, Qnil))) |
e477bb04 | 762 | || (XFASTINT (old_pos) > BEGV |
42ab8e36 | 763 | && !NILP (Fget_char_property (prev_old, Qfield, Qnil)))) |
ee547125 | 764 | && (NILP (inhibit_capture_property) |
e477bb04 KL |
765 | /* Field boundaries are again a problem; but now we must |
766 | decide the case exactly, so we need to call | |
767 | `get_pos_property' as well. */ | |
768 | || (NILP (get_pos_property (old_pos, inhibit_capture_property, Qnil)) | |
769 | && (XFASTINT (old_pos) <= BEGV | |
42ab8e36 MB |
770 | || NILP (Fget_char_property (old_pos, inhibit_capture_property, Qnil)) |
771 | || NILP (Fget_char_property (prev_old, inhibit_capture_property, Qnil)))))) | |
2cb3aec4 KL |
772 | /* It is possible that NEW_POS is not within the same field as |
773 | OLD_POS; try to move NEW_POS so that it is. */ | |
0daf6e8d | 774 | { |
e477bb04 | 775 | int shortage; |
0daf6e8d GM |
776 | Lisp_Object field_bound; |
777 | ||
0daf6e8d | 778 | if (fwd) |
9ac741c5 | 779 | field_bound = Ffield_end (old_pos, escape_from_edge, new_pos); |
0daf6e8d | 780 | else |
9ac741c5 | 781 | field_bound = Ffield_beginning (old_pos, escape_from_edge, new_pos); |
0daf6e8d | 782 | |
10b0f752 MB |
783 | if (/* See if ESCAPE_FROM_EDGE caused FIELD_BOUND to jump to the |
784 | other side of NEW_POS, which would mean that NEW_POS is | |
785 | already acceptable, and it's not necessary to constrain it | |
786 | to FIELD_BOUND. */ | |
787 | ((XFASTINT (field_bound) < XFASTINT (new_pos)) ? fwd : !fwd) | |
788 | /* NEW_POS should be constrained, but only if either | |
789 | ONLY_IN_LINE is nil (in which case any constraint is OK), | |
790 | or NEW_POS and FIELD_BOUND are on the same line (in which | |
791 | case the constraint is OK even if ONLY_IN_LINE is non-nil). */ | |
792 | && (NILP (only_in_line) | |
793 | /* This is the ONLY_IN_LINE case, check that NEW_POS and | |
794 | FIELD_BOUND are on the same line by seeing whether | |
795 | there's an intervening newline or not. */ | |
796 | || (scan_buffer ('\n', | |
797 | XFASTINT (new_pos), XFASTINT (field_bound), | |
798 | fwd ? -1 : 1, &shortage, 1), | |
799 | shortage != 0))) | |
0daf6e8d GM |
800 | /* Constrain NEW_POS to FIELD_BOUND. */ |
801 | new_pos = field_bound; | |
802 | ||
803 | if (orig_point && XFASTINT (new_pos) != orig_point) | |
804 | /* The NEW_POS argument was originally nil, so automatically set PT. */ | |
805 | SET_PT (XFASTINT (new_pos)); | |
806 | } | |
807 | ||
808 | return new_pos; | |
809 | } | |
acb7cc89 | 810 | |
0daf6e8d | 811 | \f |
6d57c318 MB |
812 | DEFUN ("line-beginning-position", |
813 | Fline_beginning_position, Sline_beginning_position, 0, 1, 0, | |
7ee72033 | 814 | doc: /* Return the character position of the first character on the current line. |
a1f17501 PJ |
815 | With argument N not nil or 1, move forward N - 1 lines first. |
816 | If scan reaches end of buffer, return that position. | |
6d57c318 | 817 | |
2cb3aec4 KL |
818 | This function constrains the returned position to the current field |
819 | unless that would be on a different line than the original, | |
820 | unconstrained result. If N is nil or 1, and a front-sticky field | |
821 | starts at point, the scan stops as soon as it starts. To ignore field | |
6d57c318 | 822 | boundaries bind `inhibit-field-text-motion' to t. |
a1f17501 | 823 | |
7ee72033 MB |
824 | This function does not move point. */) |
825 | (n) | |
c9ed721d RS |
826 | Lisp_Object n; |
827 | { | |
acb7cc89 | 828 | int orig, orig_byte, end; |
4e8f005c CY |
829 | int count = SPECPDL_INDEX (); |
830 | specbind (Qinhibit_point_motion_hooks, Qt); | |
c9ed721d RS |
831 | |
832 | if (NILP (n)) | |
833 | XSETFASTINT (n, 1); | |
834 | else | |
b7826503 | 835 | CHECK_NUMBER (n); |
c9ed721d RS |
836 | |
837 | orig = PT; | |
ec1c14f6 | 838 | orig_byte = PT_BYTE; |
c9ed721d RS |
839 | Fforward_line (make_number (XINT (n) - 1)); |
840 | end = PT; | |
e2dae3f2 | 841 | |
ec1c14f6 | 842 | SET_PT_BOTH (orig, orig_byte); |
35692fe0 | 843 | |
4e8f005c CY |
844 | unbind_to (count, Qnil); |
845 | ||
0daf6e8d | 846 | /* Return END constrained to the current input field. */ |
ee5cd4db GM |
847 | return Fconstrain_to_field (make_number (end), make_number (orig), |
848 | XINT (n) != 1 ? Qt : Qnil, | |
ee547125 | 849 | Qt, Qnil); |
c9ed721d RS |
850 | } |
851 | ||
6d57c318 | 852 | DEFUN ("line-end-position", Fline_end_position, Sline_end_position, 0, 1, 0, |
7ee72033 | 853 | doc: /* Return the character position of the last character on the current line. |
a1f17501 PJ |
854 | With argument N not nil or 1, move forward N - 1 lines first. |
855 | If scan reaches end of buffer, return that position. | |
6d57c318 | 856 | |
2cb3aec4 KL |
857 | This function constrains the returned position to the current field |
858 | unless that would be on a different line than the original, | |
859 | unconstrained result. If N is nil or 1, and a rear-sticky field ends | |
860 | at point, the scan stops as soon as it starts. To ignore field | |
6d57c318 MB |
861 | boundaries bind `inhibit-field-text-motion' to t. |
862 | ||
7ee72033 MB |
863 | This function does not move point. */) |
864 | (n) | |
c9ed721d RS |
865 | Lisp_Object n; |
866 | { | |
0daf6e8d | 867 | int end_pos; |
acb7cc89 | 868 | int orig = PT; |
0daf6e8d | 869 | |
c9ed721d RS |
870 | if (NILP (n)) |
871 | XSETFASTINT (n, 1); | |
872 | else | |
b7826503 | 873 | CHECK_NUMBER (n); |
c9ed721d | 874 | |
0daf6e8d GM |
875 | end_pos = find_before_next_newline (orig, 0, XINT (n) - (XINT (n) <= 0)); |
876 | ||
877 | /* Return END_POS constrained to the current input field. */ | |
ee5cd4db | 878 | return Fconstrain_to_field (make_number (end_pos), make_number (orig), |
ee547125 | 879 | Qnil, Qt, Qnil); |
c9ed721d | 880 | } |
6d57c318 | 881 | |
c9ed721d | 882 | \f |
35692fe0 JB |
883 | Lisp_Object |
884 | save_excursion_save () | |
885 | { | |
acb7cc89 GM |
886 | int visible = (XBUFFER (XWINDOW (selected_window)->buffer) |
887 | == current_buffer); | |
35692fe0 JB |
888 | |
889 | return Fcons (Fpoint_marker (), | |
aea4a109 | 890 | Fcons (Fcopy_marker (current_buffer->mark, Qnil), |
9772455e | 891 | Fcons (visible ? Qt : Qnil, |
2483cf58 GM |
892 | Fcons (current_buffer->mark_active, |
893 | selected_window)))); | |
35692fe0 JB |
894 | } |
895 | ||
896 | Lisp_Object | |
897 | save_excursion_restore (info) | |
4ad8681a | 898 | Lisp_Object info; |
35692fe0 | 899 | { |
4ad8681a RS |
900 | Lisp_Object tem, tem1, omark, nmark; |
901 | struct gcpro gcpro1, gcpro2, gcpro3; | |
2483cf58 | 902 | int visible_p; |
35692fe0 | 903 | |
2483cf58 | 904 | tem = Fmarker_buffer (XCAR (info)); |
35692fe0 JB |
905 | /* If buffer being returned to is now deleted, avoid error */ |
906 | /* Otherwise could get error here while unwinding to top level | |
907 | and crash */ | |
908 | /* In that case, Fmarker_buffer returns nil now. */ | |
56a98455 | 909 | if (NILP (tem)) |
35692fe0 | 910 | return Qnil; |
4ad8681a RS |
911 | |
912 | omark = nmark = Qnil; | |
913 | GCPRO3 (info, omark, nmark); | |
914 | ||
35692fe0 | 915 | Fset_buffer (tem); |
2483cf58 GM |
916 | |
917 | /* Point marker. */ | |
918 | tem = XCAR (info); | |
35692fe0 | 919 | Fgoto_char (tem); |
12038f9f | 920 | unchain_marker (XMARKER (tem)); |
2483cf58 GM |
921 | |
922 | /* Mark marker. */ | |
923 | info = XCDR (info); | |
924 | tem = XCAR (info); | |
03d18690 | 925 | omark = Fmarker_position (current_buffer->mark); |
35692fe0 | 926 | Fset_marker (current_buffer->mark, tem, Fcurrent_buffer ()); |
03d18690 | 927 | nmark = Fmarker_position (tem); |
12038f9f | 928 | unchain_marker (XMARKER (tem)); |
2483cf58 GM |
929 | |
930 | /* visible */ | |
931 | info = XCDR (info); | |
932 | visible_p = !NILP (XCAR (info)); | |
177c0ea7 | 933 | |
ef580991 RS |
934 | #if 0 /* We used to make the current buffer visible in the selected window |
935 | if that was true previously. That avoids some anomalies. | |
936 | But it creates others, and it wasn't documented, and it is simpler | |
937 | and cleaner never to alter the window/buffer connections. */ | |
9772455e RS |
938 | tem1 = Fcar (tem); |
939 | if (!NILP (tem1) | |
0e2c9c70 | 940 | && current_buffer != XBUFFER (XWINDOW (selected_window)->buffer)) |
35692fe0 | 941 | Fswitch_to_buffer (Fcurrent_buffer (), Qnil); |
ef580991 | 942 | #endif /* 0 */ |
9772455e | 943 | |
2483cf58 GM |
944 | /* Mark active */ |
945 | info = XCDR (info); | |
946 | tem = XCAR (info); | |
9772455e | 947 | tem1 = current_buffer->mark_active; |
2483cf58 GM |
948 | current_buffer->mark_active = tem; |
949 | ||
9fed2b18 RS |
950 | if (!NILP (Vrun_hooks)) |
951 | { | |
03d18690 RS |
952 | /* If mark is active now, and either was not active |
953 | or was at a different place, run the activate hook. */ | |
9fed2b18 | 954 | if (! NILP (current_buffer->mark_active)) |
03d18690 RS |
955 | { |
956 | if (! EQ (omark, nmark)) | |
957 | call1 (Vrun_hooks, intern ("activate-mark-hook")); | |
958 | } | |
959 | /* If mark has ceased to be active, run deactivate hook. */ | |
9fed2b18 RS |
960 | else if (! NILP (tem1)) |
961 | call1 (Vrun_hooks, intern ("deactivate-mark-hook")); | |
962 | } | |
2483cf58 GM |
963 | |
964 | /* If buffer was visible in a window, and a different window was | |
793cd2c8 GM |
965 | selected, and the old selected window is still showing this |
966 | buffer, restore point in that window. */ | |
2483cf58 GM |
967 | tem = XCDR (info); |
968 | if (visible_p | |
969 | && !EQ (tem, selected_window) | |
ba973f7a GM |
970 | && (tem1 = XWINDOW (tem)->buffer, |
971 | (/* Window is live... */ | |
972 | BUFFERP (tem1) | |
973 | /* ...and it shows the current buffer. */ | |
974 | && XBUFFER (tem1) == current_buffer))) | |
2483cf58 GM |
975 | Fset_window_point (tem, make_number (PT)); |
976 | ||
4ad8681a | 977 | UNGCPRO; |
35692fe0 JB |
978 | return Qnil; |
979 | } | |
980 | ||
981 | DEFUN ("save-excursion", Fsave_excursion, Ssave_excursion, 0, UNEVALLED, 0, | |
7ee72033 | 982 | doc: /* Save point, mark, and current buffer; execute BODY; restore those things. |
a1f17501 PJ |
983 | Executes BODY just like `progn'. |
984 | The values of point, mark and the current buffer are restored | |
985 | even in case of abnormal exit (throw or error). | |
986 | The state of activation of the mark is also restored. | |
987 | ||
988 | This construct does not save `deactivate-mark', and therefore | |
989 | functions that change the buffer will still cause deactivation | |
990 | of the mark at the end of the command. To prevent that, bind | |
33c2d29f MB |
991 | `deactivate-mark' with `let'. |
992 | ||
993 | usage: (save-excursion &rest BODY) */) | |
7ee72033 | 994 | (args) |
35692fe0 JB |
995 | Lisp_Object args; |
996 | { | |
997 | register Lisp_Object val; | |
aed13378 | 998 | int count = SPECPDL_INDEX (); |
35692fe0 JB |
999 | |
1000 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
4bc8c7d2 RS |
1001 | |
1002 | val = Fprogn (args); | |
1003 | return unbind_to (count, val); | |
1004 | } | |
1005 | ||
1006 | DEFUN ("save-current-buffer", Fsave_current_buffer, Ssave_current_buffer, 0, UNEVALLED, 0, | |
7ee72033 | 1007 | doc: /* Save the current buffer; execute BODY; restore the current buffer. |
33c2d29f MB |
1008 | Executes BODY just like `progn'. |
1009 | usage: (save-current-buffer &rest BODY) */) | |
7ee72033 | 1010 | (args) |
4bc8c7d2 RS |
1011 | Lisp_Object args; |
1012 | { | |
acb7cc89 | 1013 | Lisp_Object val; |
aed13378 | 1014 | int count = SPECPDL_INDEX (); |
4bc8c7d2 | 1015 | |
cb5e5f74 | 1016 | record_unwind_protect (set_buffer_if_live, Fcurrent_buffer ()); |
4bc8c7d2 | 1017 | |
35692fe0 JB |
1018 | val = Fprogn (args); |
1019 | return unbind_to (count, val); | |
1020 | } | |
1021 | \f | |
95dccf75 | 1022 | DEFUN ("buffer-size", Fbufsize, Sbufsize, 0, 1, 0, |
7ee72033 MB |
1023 | doc: /* Return the number of characters in the current buffer. |
1024 | If BUFFER, return the number of characters in that buffer instead. */) | |
1025 | (buffer) | |
95dccf75 | 1026 | Lisp_Object buffer; |
35692fe0 | 1027 | { |
95dccf75 RS |
1028 | if (NILP (buffer)) |
1029 | return make_number (Z - BEG); | |
02050596 RS |
1030 | else |
1031 | { | |
b7826503 | 1032 | CHECK_BUFFER (buffer); |
02050596 RS |
1033 | return make_number (BUF_Z (XBUFFER (buffer)) |
1034 | - BUF_BEG (XBUFFER (buffer))); | |
1035 | } | |
35692fe0 JB |
1036 | } |
1037 | ||
1038 | DEFUN ("point-min", Fpoint_min, Spoint_min, 0, 0, 0, | |
7ee72033 MB |
1039 | doc: /* Return the minimum permissible value of point in the current buffer. |
1040 | This is 1, unless narrowing (a buffer restriction) is in effect. */) | |
1041 | () | |
35692fe0 JB |
1042 | { |
1043 | Lisp_Object temp; | |
55561c63 | 1044 | XSETFASTINT (temp, BEGV); |
35692fe0 JB |
1045 | return temp; |
1046 | } | |
1047 | ||
1048 | DEFUN ("point-min-marker", Fpoint_min_marker, Spoint_min_marker, 0, 0, 0, | |
7ee72033 MB |
1049 | doc: /* Return a marker to the minimum permissible value of point in this buffer. |
1050 | This is the beginning, unless narrowing (a buffer restriction) is in effect. */) | |
1051 | () | |
35692fe0 | 1052 | { |
ec1c14f6 | 1053 | return buildmark (BEGV, BEGV_BYTE); |
35692fe0 JB |
1054 | } |
1055 | ||
1056 | DEFUN ("point-max", Fpoint_max, Spoint_max, 0, 0, 0, | |
7ee72033 | 1057 | doc: /* Return the maximum permissible value of point in the current buffer. |
a1f17501 | 1058 | This is (1+ (buffer-size)), unless narrowing (a buffer restriction) |
7ee72033 MB |
1059 | is in effect, in which case it is less. */) |
1060 | () | |
35692fe0 JB |
1061 | { |
1062 | Lisp_Object temp; | |
55561c63 | 1063 | XSETFASTINT (temp, ZV); |
35692fe0 JB |
1064 | return temp; |
1065 | } | |
1066 | ||
1067 | DEFUN ("point-max-marker", Fpoint_max_marker, Spoint_max_marker, 0, 0, 0, | |
7ee72033 | 1068 | doc: /* Return a marker to the maximum permissible value of point in this buffer. |
a1f17501 | 1069 | This is (1+ (buffer-size)), unless narrowing (a buffer restriction) |
7ee72033 MB |
1070 | is in effect, in which case it is less. */) |
1071 | () | |
35692fe0 | 1072 | { |
ec1c14f6 | 1073 | return buildmark (ZV, ZV_BYTE); |
35692fe0 JB |
1074 | } |
1075 | ||
c86212b9 | 1076 | DEFUN ("gap-position", Fgap_position, Sgap_position, 0, 0, 0, |
7ee72033 MB |
1077 | doc: /* Return the position of the gap, in the current buffer. |
1078 | See also `gap-size'. */) | |
1079 | () | |
c86212b9 RS |
1080 | { |
1081 | Lisp_Object temp; | |
1082 | XSETFASTINT (temp, GPT); | |
1083 | return temp; | |
1084 | } | |
1085 | ||
1086 | DEFUN ("gap-size", Fgap_size, Sgap_size, 0, 0, 0, | |
7ee72033 MB |
1087 | doc: /* Return the size of the current buffer's gap. |
1088 | See also `gap-position'. */) | |
1089 | () | |
c86212b9 RS |
1090 | { |
1091 | Lisp_Object temp; | |
1092 | XSETFASTINT (temp, GAP_SIZE); | |
1093 | return temp; | |
1094 | } | |
1095 | ||
7df74da6 | 1096 | DEFUN ("position-bytes", Fposition_bytes, Sposition_bytes, 1, 1, 0, |
7ee72033 MB |
1097 | doc: /* Return the byte position for character position POSITION. |
1098 | If POSITION is out of range, the value is nil. */) | |
1099 | (position) | |
80e01f8d | 1100 | Lisp_Object position; |
7df74da6 | 1101 | { |
b7826503 | 1102 | CHECK_NUMBER_COERCE_MARKER (position); |
fcf9683e KH |
1103 | if (XINT (position) < BEG || XINT (position) > Z) |
1104 | return Qnil; | |
fa8a5a15 | 1105 | return make_number (CHAR_TO_BYTE (XINT (position))); |
7df74da6 | 1106 | } |
3ab0732d RS |
1107 | |
1108 | DEFUN ("byte-to-position", Fbyte_to_position, Sbyte_to_position, 1, 1, 0, | |
7ee72033 MB |
1109 | doc: /* Return the character position for byte position BYTEPOS. |
1110 | If BYTEPOS is out of range, the value is nil. */) | |
1111 | (bytepos) | |
3ab0732d RS |
1112 | Lisp_Object bytepos; |
1113 | { | |
b7826503 | 1114 | CHECK_NUMBER (bytepos); |
fcf9683e KH |
1115 | if (XINT (bytepos) < BEG_BYTE || XINT (bytepos) > Z_BYTE) |
1116 | return Qnil; | |
3ab0732d RS |
1117 | return make_number (BYTE_TO_CHAR (XINT (bytepos))); |
1118 | } | |
7df74da6 | 1119 | \f |
850a8179 | 1120 | DEFUN ("following-char", Ffollowing_char, Sfollowing_char, 0, 0, 0, |
7ee72033 MB |
1121 | doc: /* Return the character following point, as a number. |
1122 | At the end of the buffer or accessible region, return 0. */) | |
1123 | () | |
35692fe0 JB |
1124 | { |
1125 | Lisp_Object temp; | |
6ec8bbd2 | 1126 | if (PT >= ZV) |
55561c63 | 1127 | XSETFASTINT (temp, 0); |
850a8179 | 1128 | else |
ec1c14f6 | 1129 | XSETFASTINT (temp, FETCH_CHAR (PT_BYTE)); |
35692fe0 JB |
1130 | return temp; |
1131 | } | |
1132 | ||
850a8179 | 1133 | DEFUN ("preceding-char", Fprevious_char, Sprevious_char, 0, 0, 0, |
7ee72033 MB |
1134 | doc: /* Return the character preceding point, as a number. |
1135 | At the beginning of the buffer or accessible region, return 0. */) | |
1136 | () | |
35692fe0 JB |
1137 | { |
1138 | Lisp_Object temp; | |
6ec8bbd2 | 1139 | if (PT <= BEGV) |
55561c63 | 1140 | XSETFASTINT (temp, 0); |
fb8106e8 KH |
1141 | else if (!NILP (current_buffer->enable_multibyte_characters)) |
1142 | { | |
ec1c14f6 | 1143 | int pos = PT_BYTE; |
fb8106e8 KH |
1144 | DEC_POS (pos); |
1145 | XSETFASTINT (temp, FETCH_CHAR (pos)); | |
1146 | } | |
35692fe0 | 1147 | else |
ec1c14f6 | 1148 | XSETFASTINT (temp, FETCH_BYTE (PT_BYTE - 1)); |
35692fe0 JB |
1149 | return temp; |
1150 | } | |
1151 | ||
1152 | DEFUN ("bobp", Fbobp, Sbobp, 0, 0, 0, | |
7ee72033 MB |
1153 | doc: /* Return t if point is at the beginning of the buffer. |
1154 | If the buffer is narrowed, this means the beginning of the narrowed part. */) | |
1155 | () | |
35692fe0 | 1156 | { |
6ec8bbd2 | 1157 | if (PT == BEGV) |
35692fe0 JB |
1158 | return Qt; |
1159 | return Qnil; | |
1160 | } | |
1161 | ||
1162 | DEFUN ("eobp", Feobp, Seobp, 0, 0, 0, | |
7ee72033 MB |
1163 | doc: /* Return t if point is at the end of the buffer. |
1164 | If the buffer is narrowed, this means the end of the narrowed part. */) | |
1165 | () | |
35692fe0 | 1166 | { |
6ec8bbd2 | 1167 | if (PT == ZV) |
35692fe0 JB |
1168 | return Qt; |
1169 | return Qnil; | |
1170 | } | |
1171 | ||
1172 | DEFUN ("bolp", Fbolp, Sbolp, 0, 0, 0, | |
7ee72033 MB |
1173 | doc: /* Return t if point is at the beginning of a line. */) |
1174 | () | |
35692fe0 | 1175 | { |
ec1c14f6 | 1176 | if (PT == BEGV || FETCH_BYTE (PT_BYTE - 1) == '\n') |
35692fe0 JB |
1177 | return Qt; |
1178 | return Qnil; | |
1179 | } | |
1180 | ||
1181 | DEFUN ("eolp", Feolp, Seolp, 0, 0, 0, | |
7ee72033 MB |
1182 | doc: /* Return t if point is at the end of a line. |
1183 | `End of a line' includes point being at the end of the buffer. */) | |
1184 | () | |
35692fe0 | 1185 | { |
ec1c14f6 | 1186 | if (PT == ZV || FETCH_BYTE (PT_BYTE) == '\n') |
35692fe0 JB |
1187 | return Qt; |
1188 | return Qnil; | |
1189 | } | |
1190 | ||
fa1d3816 | 1191 | DEFUN ("char-after", Fchar_after, Schar_after, 0, 1, 0, |
7ee72033 | 1192 | doc: /* Return character in current buffer at position POS. |
64d1e373 | 1193 | POS is an integer or a marker and defaults to point. |
7ee72033 MB |
1194 | If POS is out of range, the value is nil. */) |
1195 | (pos) | |
35692fe0 JB |
1196 | Lisp_Object pos; |
1197 | { | |
ec1c14f6 | 1198 | register int pos_byte; |
35692fe0 | 1199 | |
fa1d3816 | 1200 | if (NILP (pos)) |
39a4c932 RS |
1201 | { |
1202 | pos_byte = PT_BYTE; | |
3c52e568 | 1203 | XSETFASTINT (pos, PT); |
39a4c932 RS |
1204 | } |
1205 | ||
1206 | if (MARKERP (pos)) | |
85cac557 RS |
1207 | { |
1208 | pos_byte = marker_byte_position (pos); | |
1209 | if (pos_byte < BEGV_BYTE || pos_byte >= ZV_BYTE) | |
1210 | return Qnil; | |
1211 | } | |
fa1d3816 RS |
1212 | else |
1213 | { | |
b7826503 | 1214 | CHECK_NUMBER_COERCE_MARKER (pos); |
b98ef0dc | 1215 | if (XINT (pos) < BEGV || XINT (pos) >= ZV) |
85cac557 | 1216 | return Qnil; |
34a7a267 | 1217 | |
ec1c14f6 | 1218 | pos_byte = CHAR_TO_BYTE (XINT (pos)); |
fa1d3816 | 1219 | } |
35692fe0 | 1220 | |
ec1c14f6 | 1221 | return make_number (FETCH_CHAR (pos_byte)); |
35692fe0 | 1222 | } |
fb8106e8 | 1223 | |
fa1d3816 | 1224 | DEFUN ("char-before", Fchar_before, Schar_before, 0, 1, 0, |
7ee72033 | 1225 | doc: /* Return character in current buffer preceding position POS. |
64d1e373 | 1226 | POS is an integer or a marker and defaults to point. |
7ee72033 MB |
1227 | If POS is out of range, the value is nil. */) |
1228 | (pos) | |
fb8106e8 KH |
1229 | Lisp_Object pos; |
1230 | { | |
1231 | register Lisp_Object val; | |
ec1c14f6 | 1232 | register int pos_byte; |
fb8106e8 | 1233 | |
fa1d3816 | 1234 | if (NILP (pos)) |
39a4c932 RS |
1235 | { |
1236 | pos_byte = PT_BYTE; | |
3c52e568 | 1237 | XSETFASTINT (pos, PT); |
39a4c932 RS |
1238 | } |
1239 | ||
1240 | if (MARKERP (pos)) | |
85cac557 RS |
1241 | { |
1242 | pos_byte = marker_byte_position (pos); | |
1243 | ||
1244 | if (pos_byte <= BEGV_BYTE || pos_byte > ZV_BYTE) | |
1245 | return Qnil; | |
1246 | } | |
fa1d3816 RS |
1247 | else |
1248 | { | |
b7826503 | 1249 | CHECK_NUMBER_COERCE_MARKER (pos); |
fb8106e8 | 1250 | |
b98ef0dc | 1251 | if (XINT (pos) <= BEGV || XINT (pos) > ZV) |
85cac557 RS |
1252 | return Qnil; |
1253 | ||
ec1c14f6 | 1254 | pos_byte = CHAR_TO_BYTE (XINT (pos)); |
fa1d3816 | 1255 | } |
fb8106e8 KH |
1256 | |
1257 | if (!NILP (current_buffer->enable_multibyte_characters)) | |
1258 | { | |
ec1c14f6 RS |
1259 | DEC_POS (pos_byte); |
1260 | XSETFASTINT (val, FETCH_CHAR (pos_byte)); | |
fb8106e8 KH |
1261 | } |
1262 | else | |
1263 | { | |
ec1c14f6 RS |
1264 | pos_byte--; |
1265 | XSETFASTINT (val, FETCH_BYTE (pos_byte)); | |
fb8106e8 KH |
1266 | } |
1267 | return val; | |
1268 | } | |
35692fe0 | 1269 | \f |
87485d6f | 1270 | DEFUN ("user-login-name", Fuser_login_name, Suser_login_name, 0, 1, 0, |
7ee72033 | 1271 | doc: /* Return the name under which the user logged in, as a string. |
a1f17501 | 1272 | This is based on the effective uid, not the real uid. |
412f1fab | 1273 | Also, if the environment variables LOGNAME or USER are set, |
a1f17501 PJ |
1274 | that determines the value of this function. |
1275 | ||
1276 | If optional argument UID is an integer, return the login name of the user | |
7ee72033 MB |
1277 | with that uid, or nil if there is no such user. */) |
1278 | (uid) | |
87485d6f | 1279 | Lisp_Object uid; |
35692fe0 | 1280 | { |
87485d6f MW |
1281 | struct passwd *pw; |
1282 | ||
f8a0e364 RS |
1283 | /* Set up the user name info if we didn't do it before. |
1284 | (That can happen if Emacs is dumpable | |
1285 | but you decide to run `temacs -l loadup' and not dump. */ | |
35b34f72 | 1286 | if (INTEGERP (Vuser_login_name)) |
f8a0e364 | 1287 | init_editfns (); |
87485d6f MW |
1288 | |
1289 | if (NILP (uid)) | |
35b34f72 | 1290 | return Vuser_login_name; |
87485d6f | 1291 | |
b7826503 | 1292 | CHECK_NUMBER (uid); |
b91834c3 | 1293 | BLOCK_INPUT; |
87485d6f | 1294 | pw = (struct passwd *) getpwuid (XINT (uid)); |
b91834c3 | 1295 | UNBLOCK_INPUT; |
87485d6f | 1296 | return (pw ? build_string (pw->pw_name) : Qnil); |
35692fe0 JB |
1297 | } |
1298 | ||
1299 | DEFUN ("user-real-login-name", Fuser_real_login_name, Suser_real_login_name, | |
deb8e082 | 1300 | 0, 0, 0, |
7ee72033 | 1301 | doc: /* Return the name of the user's real uid, as a string. |
a1f17501 | 1302 | This ignores the environment variables LOGNAME and USER, so it differs from |
7ee72033 MB |
1303 | `user-login-name' when running under `su'. */) |
1304 | () | |
35692fe0 | 1305 | { |
f8a0e364 RS |
1306 | /* Set up the user name info if we didn't do it before. |
1307 | (That can happen if Emacs is dumpable | |
1308 | but you decide to run `temacs -l loadup' and not dump. */ | |
35b34f72 | 1309 | if (INTEGERP (Vuser_login_name)) |
f8a0e364 | 1310 | init_editfns (); |
35b34f72 | 1311 | return Vuser_real_login_name; |
35692fe0 JB |
1312 | } |
1313 | ||
1314 | DEFUN ("user-uid", Fuser_uid, Suser_uid, 0, 0, 0, | |
7ee72033 MB |
1315 | doc: /* Return the effective uid of Emacs. |
1316 | Value is an integer or float, depending on the value. */) | |
1317 | () | |
35692fe0 | 1318 | { |
3aef3c0a EZ |
1319 | /* Assignment to EMACS_INT stops GCC whining about limited range of |
1320 | data type. */ | |
1321 | EMACS_INT euid = geteuid (); | |
1322 | return make_fixnum_or_float (euid); | |
35692fe0 JB |
1323 | } |
1324 | ||
1325 | DEFUN ("user-real-uid", Fuser_real_uid, Suser_real_uid, 0, 0, 0, | |
7ee72033 MB |
1326 | doc: /* Return the real uid of Emacs. |
1327 | Value is an integer or float, depending on the value. */) | |
1328 | () | |
35692fe0 | 1329 | { |
3aef3c0a EZ |
1330 | /* Assignment to EMACS_INT stops GCC whining about limited range of |
1331 | data type. */ | |
1332 | EMACS_INT uid = getuid (); | |
1333 | return make_fixnum_or_float (uid); | |
35692fe0 JB |
1334 | } |
1335 | ||
c9ed721d | 1336 | DEFUN ("user-full-name", Fuser_full_name, Suser_full_name, 0, 1, 0, |
7ee72033 | 1337 | doc: /* Return the full name of the user logged in, as a string. |
a1f17501 PJ |
1338 | If the full name corresponding to Emacs's userid is not known, |
1339 | return "unknown". | |
1340 | ||
1341 | If optional argument UID is an integer or float, return the full name | |
1342 | of the user with that uid, or nil if there is no such user. | |
1343 | If UID is a string, return the full name of the user with that login | |
7ee72033 MB |
1344 | name, or nil if there is no such user. */) |
1345 | (uid) | |
c9ed721d | 1346 | Lisp_Object uid; |
35692fe0 | 1347 | { |
c9ed721d | 1348 | struct passwd *pw; |
b0e92acd | 1349 | register unsigned char *p, *q; |
3415b0e9 | 1350 | Lisp_Object full; |
c9ed721d RS |
1351 | |
1352 | if (NILP (uid)) | |
34a7a267 | 1353 | return Vuser_full_name; |
3415b0e9 | 1354 | else if (NUMBERP (uid)) |
b91834c3 YM |
1355 | { |
1356 | BLOCK_INPUT; | |
1357 | pw = (struct passwd *) getpwuid ((uid_t) XFLOATINT (uid)); | |
1358 | UNBLOCK_INPUT; | |
1359 | } | |
34a7a267 | 1360 | else if (STRINGP (uid)) |
b91834c3 YM |
1361 | { |
1362 | BLOCK_INPUT; | |
1363 | pw = (struct passwd *) getpwnam (SDATA (uid)); | |
1364 | UNBLOCK_INPUT; | |
1365 | } | |
3415b0e9 RS |
1366 | else |
1367 | error ("Invalid UID specification"); | |
c9ed721d | 1368 | |
3415b0e9 | 1369 | if (!pw) |
3347526c | 1370 | return Qnil; |
34a7a267 | 1371 | |
3415b0e9 RS |
1372 | p = (unsigned char *) USER_FULL_NAME; |
1373 | /* Chop off everything after the first comma. */ | |
1374 | q = (unsigned char *) index (p, ','); | |
1375 | full = make_string (p, q ? q - p : strlen (p)); | |
34a7a267 | 1376 | |
3415b0e9 | 1377 | #ifdef AMPERSAND_FULL_NAME |
d5db4077 | 1378 | p = SDATA (full); |
3415b0e9 RS |
1379 | q = (unsigned char *) index (p, '&'); |
1380 | /* Substitute the login name for the &, upcasing the first character. */ | |
1381 | if (q) | |
1382 | { | |
b0e92acd | 1383 | register unsigned char *r; |
3415b0e9 RS |
1384 | Lisp_Object login; |
1385 | ||
1386 | login = Fuser_login_name (make_number (pw->pw_uid)); | |
d5db4077 | 1387 | r = (unsigned char *) alloca (strlen (p) + SCHARS (login) + 1); |
3415b0e9 RS |
1388 | bcopy (p, r, q - p); |
1389 | r[q - p] = 0; | |
d5db4077 | 1390 | strcat (r, SDATA (login)); |
3415b0e9 RS |
1391 | r[q - p] = UPCASE (r[q - p]); |
1392 | strcat (r, q + 1); | |
1393 | full = build_string (r); | |
1394 | } | |
1395 | #endif /* AMPERSAND_FULL_NAME */ | |
1396 | ||
1397 | return full; | |
35692fe0 JB |
1398 | } |
1399 | ||
1400 | DEFUN ("system-name", Fsystem_name, Ssystem_name, 0, 0, 0, | |
1a7e0117 | 1401 | doc: /* Return the host name of the machine you are running on, as a string. */) |
7ee72033 | 1402 | () |
35692fe0 JB |
1403 | { |
1404 | return Vsystem_name; | |
1405 | } | |
1406 | ||
ac988277 | 1407 | /* For the benefit of callers who don't want to include lisp.h */ |
acb7cc89 | 1408 | |
ac988277 KH |
1409 | char * |
1410 | get_system_name () | |
1411 | { | |
3d976a9a | 1412 | if (STRINGP (Vsystem_name)) |
d5db4077 | 1413 | return (char *) SDATA (Vsystem_name); |
3d976a9a RS |
1414 | else |
1415 | return ""; | |
ac988277 KH |
1416 | } |
1417 | ||
a15252fd ST |
1418 | char * |
1419 | get_operating_system_release() | |
1420 | { | |
1421 | if (STRINGP (Voperating_system_release)) | |
1422 | return (char *) SDATA (Voperating_system_release); | |
1423 | else | |
1424 | return ""; | |
1425 | } | |
1426 | ||
7fd233b3 | 1427 | DEFUN ("emacs-pid", Femacs_pid, Semacs_pid, 0, 0, 0, |
7ee72033 MB |
1428 | doc: /* Return the process ID of Emacs, as an integer. */) |
1429 | () | |
7fd233b3 RS |
1430 | { |
1431 | return make_number (getpid ()); | |
1432 | } | |
1433 | ||
d940e0e4 | 1434 | DEFUN ("current-time", Fcurrent_time, Scurrent_time, 0, 0, 0, |
7ee72033 | 1435 | doc: /* Return the current time, as the number of seconds since 1970-01-01 00:00:00. |
a1f17501 PJ |
1436 | The time is returned as a list of three integers. The first has the |
1437 | most significant 16 bits of the seconds, while the second has the | |
1438 | least significant 16 bits. The third integer gives the microsecond | |
1439 | count. | |
1440 | ||
1441 | The microsecond count is zero on systems that do not provide | |
7ee72033 MB |
1442 | resolution finer than a second. */) |
1443 | () | |
d940e0e4 | 1444 | { |
956ace37 | 1445 | EMACS_TIME t; |
956ace37 JB |
1446 | |
1447 | EMACS_GET_TIME (t); | |
799734b0 KS |
1448 | return list3 (make_number ((EMACS_SECS (t) >> 16) & 0xffff), |
1449 | make_number ((EMACS_SECS (t) >> 0) & 0xffff), | |
1450 | make_number (EMACS_USECS (t))); | |
d940e0e4 | 1451 | } |
4211ee7d EZ |
1452 | |
1453 | DEFUN ("get-internal-run-time", Fget_internal_run_time, Sget_internal_run_time, | |
1454 | 0, 0, 0, | |
1455 | doc: /* Return the current run time used by Emacs. | |
1456 | The time is returned as a list of three integers. The first has the | |
1457 | most significant 16 bits of the seconds, while the second has the | |
1458 | least significant 16 bits. The third integer gives the microsecond | |
1459 | count. | |
1460 | ||
9671c13a JB |
1461 | On systems that can't determine the run time, `get-internal-run-time' |
1462 | does the same thing as `current-time'. The microsecond count is zero | |
1463 | on systems that do not provide resolution finer than a second. */) | |
4211ee7d EZ |
1464 | () |
1465 | { | |
1466 | #ifdef HAVE_GETRUSAGE | |
1467 | struct rusage usage; | |
4211ee7d EZ |
1468 | int secs, usecs; |
1469 | ||
1470 | if (getrusage (RUSAGE_SELF, &usage) < 0) | |
1471 | /* This shouldn't happen. What action is appropriate? */ | |
8a0ff744 | 1472 | xsignal0 (Qerror); |
4211ee7d EZ |
1473 | |
1474 | /* Sum up user time and system time. */ | |
1475 | secs = usage.ru_utime.tv_sec + usage.ru_stime.tv_sec; | |
1476 | usecs = usage.ru_utime.tv_usec + usage.ru_stime.tv_usec; | |
1477 | if (usecs >= 1000000) | |
1478 | { | |
1479 | usecs -= 1000000; | |
1480 | secs++; | |
1481 | } | |
1482 | ||
799734b0 KS |
1483 | return list3 (make_number ((secs >> 16) & 0xffff), |
1484 | make_number ((secs >> 0) & 0xffff), | |
1485 | make_number (usecs)); | |
4211ee7d EZ |
1486 | #else |
1487 | return Fcurrent_time (); | |
1488 | #endif | |
1489 | } | |
d940e0e4 JB |
1490 | \f |
1491 | ||
5c5718b6 | 1492 | int |
34a7a267 | 1493 | lisp_time_argument (specified_time, result, usec) |
e3120ab5 JB |
1494 | Lisp_Object specified_time; |
1495 | time_t *result; | |
34a7a267 | 1496 | int *usec; |
e3120ab5 JB |
1497 | { |
1498 | if (NILP (specified_time)) | |
34a7a267 SS |
1499 | { |
1500 | if (usec) | |
1501 | { | |
1502 | EMACS_TIME t; | |
1503 | ||
c0261b5e | 1504 | EMACS_GET_TIME (t); |
34a7a267 SS |
1505 | *usec = EMACS_USECS (t); |
1506 | *result = EMACS_SECS (t); | |
1507 | return 1; | |
1508 | } | |
1509 | else | |
1510 | return time (result) != -1; | |
1511 | } | |
e3120ab5 JB |
1512 | else |
1513 | { | |
1514 | Lisp_Object high, low; | |
1515 | high = Fcar (specified_time); | |
b7826503 | 1516 | CHECK_NUMBER (high); |
e3120ab5 | 1517 | low = Fcdr (specified_time); |
ae683129 | 1518 | if (CONSP (low)) |
34a7a267 SS |
1519 | { |
1520 | if (usec) | |
1521 | { | |
1522 | Lisp_Object usec_l = Fcdr (low); | |
1523 | if (CONSP (usec_l)) | |
1524 | usec_l = Fcar (usec_l); | |
1525 | if (NILP (usec_l)) | |
1526 | *usec = 0; | |
1527 | else | |
1528 | { | |
b7826503 | 1529 | CHECK_NUMBER (usec_l); |
34a7a267 SS |
1530 | *usec = XINT (usec_l); |
1531 | } | |
1532 | } | |
1533 | low = Fcar (low); | |
1534 | } | |
1535 | else if (usec) | |
1536 | *usec = 0; | |
b7826503 | 1537 | CHECK_NUMBER (low); |
e3120ab5 JB |
1538 | *result = (XINT (high) << 16) + (XINT (low) & 0xffff); |
1539 | return *result >> 16 == XINT (high); | |
1540 | } | |
1541 | } | |
1542 | ||
34a7a267 | 1543 | DEFUN ("float-time", Ffloat_time, Sfloat_time, 0, 1, 0, |
7ee72033 | 1544 | doc: /* Return the current time, as a float number of seconds since the epoch. |
412f1fab | 1545 | If SPECIFIED-TIME is given, it is the time to convert to float |
5668fbb8 LT |
1546 | instead of the current time. The argument should have the form |
1547 | (HIGH LOW . IGNORED). Thus, you can use times obtained from | |
1548 | `current-time' and from `file-attributes'. SPECIFIED-TIME can also | |
1549 | have the form (HIGH . LOW), but this is considered obsolete. | |
a1f17501 PJ |
1550 | |
1551 | WARNING: Since the result is floating point, it may not be exact. | |
7ee72033 MB |
1552 | Do not use this function if precise time stamps are required. */) |
1553 | (specified_time) | |
34a7a267 SS |
1554 | Lisp_Object specified_time; |
1555 | { | |
1556 | time_t sec; | |
1557 | int usec; | |
1558 | ||
1559 | if (! lisp_time_argument (specified_time, &sec, &usec)) | |
1560 | error ("Invalid time specification"); | |
1561 | ||
26fad6e5 | 1562 | return make_float ((sec * 1e6 + usec) / 1e6); |
34a7a267 SS |
1563 | } |
1564 | ||
70ebbe5f PE |
1565 | /* Write information into buffer S of size MAXSIZE, according to the |
1566 | FORMAT of length FORMAT_LEN, using time information taken from *TP. | |
68c45bf0 | 1567 | Default to Universal Time if UT is nonzero, local time otherwise. |
70ebbe5f PE |
1568 | Return the number of bytes written, not including the terminating |
1569 | '\0'. If S is NULL, nothing will be written anywhere; so to | |
1570 | determine how many bytes would be written, use NULL for S and | |
1571 | ((size_t) -1) for MAXSIZE. | |
1572 | ||
68c45bf0 | 1573 | This function behaves like emacs_strftimeu, except it allows null |
70ebbe5f PE |
1574 | bytes in FORMAT. */ |
1575 | static size_t | |
68c45bf0 | 1576 | emacs_memftimeu (s, maxsize, format, format_len, tp, ut) |
70ebbe5f PE |
1577 | char *s; |
1578 | size_t maxsize; | |
1579 | const char *format; | |
1580 | size_t format_len; | |
1581 | const struct tm *tp; | |
68c45bf0 | 1582 | int ut; |
70ebbe5f PE |
1583 | { |
1584 | size_t total = 0; | |
1585 | ||
be09e6e6 PE |
1586 | /* Loop through all the null-terminated strings in the format |
1587 | argument. Normally there's just one null-terminated string, but | |
1588 | there can be arbitrarily many, concatenated together, if the | |
68c45bf0 | 1589 | format contains '\0' bytes. emacs_strftimeu stops at the first |
be09e6e6 | 1590 | '\0' byte so we must invoke it separately for each such string. */ |
70ebbe5f PE |
1591 | for (;;) |
1592 | { | |
1593 | size_t len; | |
1594 | size_t result; | |
1595 | ||
1596 | if (s) | |
1597 | s[0] = '\1'; | |
1598 | ||
68c45bf0 | 1599 | result = emacs_strftimeu (s, maxsize, format, tp, ut); |
70ebbe5f PE |
1600 | |
1601 | if (s) | |
1602 | { | |
1603 | if (result == 0 && s[0] != '\0') | |
1604 | return 0; | |
1605 | s += result + 1; | |
1606 | } | |
1607 | ||
1608 | maxsize -= result + 1; | |
1609 | total += result; | |
1610 | len = strlen (format); | |
1611 | if (len == format_len) | |
1612 | return total; | |
1613 | total++; | |
1614 | format += len + 1; | |
1615 | format_len -= len + 1; | |
1616 | } | |
1617 | } | |
1618 | ||
3efcc98a | 1619 | DEFUN ("format-time-string", Fformat_time_string, Sformat_time_string, 1, 3, 0, |
7ee72033 | 1620 | doc: /* Use FORMAT-STRING to format the time TIME, or now if omitted. |
5668fbb8 LT |
1621 | TIME is specified as (HIGH LOW . IGNORED), as returned by |
1622 | `current-time' or `file-attributes'. The obsolete form (HIGH . LOW) | |
1623 | is also still accepted. | |
a1f17501 PJ |
1624 | The third, optional, argument UNIVERSAL, if non-nil, means describe TIME |
1625 | as Universal Time; nil means describe TIME in the local time zone. | |
1626 | The value is a copy of FORMAT-STRING, but with certain constructs replaced | |
1627 | by text that describes the specified date and time in TIME: | |
1628 | ||
1629 | %Y is the year, %y within the century, %C the century. | |
1630 | %G is the year corresponding to the ISO week, %g within the century. | |
1631 | %m is the numeric month. | |
1632 | %b and %h are the locale's abbreviated month name, %B the full name. | |
1633 | %d is the day of the month, zero-padded, %e is blank-padded. | |
1634 | %u is the numeric day of week from 1 (Monday) to 7, %w from 0 (Sunday) to 6. | |
1635 | %a is the locale's abbreviated name of the day of week, %A the full name. | |
1636 | %U is the week number starting on Sunday, %W starting on Monday, | |
1637 | %V according to ISO 8601. | |
1638 | %j is the day of the year. | |
1639 | ||
1640 | %H is the hour on a 24-hour clock, %I is on a 12-hour clock, %k is like %H | |
1641 | only blank-padded, %l is like %I blank-padded. | |
1642 | %p is the locale's equivalent of either AM or PM. | |
1643 | %M is the minute. | |
1644 | %S is the second. | |
1645 | %Z is the time zone name, %z is the numeric form. | |
1646 | %s is the number of seconds since 1970-01-01 00:00:00 +0000. | |
1647 | ||
1648 | %c is the locale's date and time format. | |
1649 | %x is the locale's "preferred" date format. | |
1650 | %D is like "%m/%d/%y". | |
1651 | ||
1652 | %R is like "%H:%M", %T is like "%H:%M:%S", %r is like "%I:%M:%S %p". | |
1653 | %X is the locale's "preferred" time format. | |
1654 | ||
1655 | Finally, %n is a newline, %t is a tab, %% is a literal %. | |
1656 | ||
1657 | Certain flags and modifiers are available with some format controls. | |
1658 | The flags are `_', `-', `^' and `#'. For certain characters X, | |
1659 | %_X is like %X, but padded with blanks; %-X is like %X, | |
a67a233b MR |
1660 | but without padding. %^X is like %X, but with all textual |
1661 | characters up-cased; %#X is like %X, but with letter-case of | |
a1f17501 PJ |
1662 | all textual characters reversed. |
1663 | %NX (where N stands for an integer) is like %X, | |
1664 | but takes up at least N (a number) positions. | |
1665 | The modifiers are `E' and `O'. For certain characters X, | |
1666 | %EX is a locale's alternative version of %X; | |
1667 | %OX is like %X, but uses the locale's number symbols. | |
1668 | ||
7ee72033 MB |
1669 | For example, to produce full ISO 8601 format, use "%Y-%m-%dT%T%z". */) |
1670 | (format_string, time, universal) | |
b48382a0 | 1671 | Lisp_Object format_string, time, universal; |
a82d387c RS |
1672 | { |
1673 | time_t value; | |
1674 | int size; | |
177ea5f1 | 1675 | struct tm *tm; |
68c45bf0 | 1676 | int ut = ! NILP (universal); |
a82d387c | 1677 | |
b7826503 | 1678 | CHECK_STRING (format_string); |
a82d387c | 1679 | |
34a7a267 | 1680 | if (! lisp_time_argument (time, &value, NULL)) |
a82d387c RS |
1681 | error ("Invalid time specification"); |
1682 | ||
68c45bf0 PE |
1683 | format_string = code_convert_string_norecord (format_string, |
1684 | Vlocale_coding_system, 1); | |
1685 | ||
a82d387c | 1686 | /* This is probably enough. */ |
d5db4077 | 1687 | size = SBYTES (format_string) * 6 + 50; |
a82d387c | 1688 | |
bcda42c8 | 1689 | BLOCK_INPUT; |
68c45bf0 | 1690 | tm = ut ? gmtime (&value) : localtime (&value); |
bcda42c8 | 1691 | UNBLOCK_INPUT; |
177ea5f1 PE |
1692 | if (! tm) |
1693 | error ("Specified time is not representable"); | |
1694 | ||
ca9c0567 | 1695 | synchronize_system_time_locale (); |
68c45bf0 | 1696 | |
a82d387c RS |
1697 | while (1) |
1698 | { | |
b48382a0 RS |
1699 | char *buf = (char *) alloca (size + 1); |
1700 | int result; | |
1701 | ||
bfbcc5ee | 1702 | buf[0] = '\1'; |
bcda42c8 | 1703 | BLOCK_INPUT; |
d5db4077 KR |
1704 | result = emacs_memftimeu (buf, size, SDATA (format_string), |
1705 | SBYTES (format_string), | |
68c45bf0 | 1706 | tm, ut); |
bcda42c8 | 1707 | UNBLOCK_INPUT; |
bfbcc5ee | 1708 | if ((result > 0 && result < size) || (result == 0 && buf[0] == '\0')) |
04e28558 | 1709 | return code_convert_string_norecord (make_unibyte_string (buf, result), |
68c45bf0 | 1710 | Vlocale_coding_system, 0); |
b48382a0 RS |
1711 | |
1712 | /* If buffer was too small, make it bigger and try again. */ | |
bcda42c8 | 1713 | BLOCK_INPUT; |
68c45bf0 | 1714 | result = emacs_memftimeu (NULL, (size_t) -1, |
d5db4077 KR |
1715 | SDATA (format_string), |
1716 | SBYTES (format_string), | |
68c45bf0 | 1717 | tm, ut); |
bcda42c8 | 1718 | UNBLOCK_INPUT; |
b48382a0 | 1719 | size = result + 1; |
a82d387c RS |
1720 | } |
1721 | } | |
1722 | ||
4691c06d | 1723 | DEFUN ("decode-time", Fdecode_time, Sdecode_time, 0, 1, 0, |
7ee72033 | 1724 | doc: /* Decode a time value as (SEC MINUTE HOUR DAY MONTH YEAR DOW DST ZONE). |
5668fbb8 | 1725 | The optional SPECIFIED-TIME should be a list of (HIGH LOW . IGNORED), |
9671c13a | 1726 | as from `current-time' and `file-attributes', or nil to use the |
5668fbb8 LT |
1727 | current time. The obsolete form (HIGH . LOW) is also still accepted. |
1728 | The list has the following nine members: SEC is an integer between 0 | |
1729 | and 60; SEC is 60 for a leap second, which only some operating systems | |
1730 | support. MINUTE is an integer between 0 and 59. HOUR is an integer | |
1731 | between 0 and 23. DAY is an integer between 1 and 31. MONTH is an | |
1732 | integer between 1 and 12. YEAR is an integer indicating the | |
1733 | four-digit year. DOW is the day of week, an integer between 0 and 6, | |
f1767e2b | 1734 | where 0 is Sunday. DST is t if daylight saving time is in effect, |
5668fbb8 LT |
1735 | otherwise nil. ZONE is an integer indicating the number of seconds |
1736 | east of Greenwich. (Note that Common Lisp has different meanings for | |
1737 | DOW and ZONE.) */) | |
7ee72033 | 1738 | (specified_time) |
4691c06d RS |
1739 | Lisp_Object specified_time; |
1740 | { | |
1741 | time_t time_spec; | |
3c887943 | 1742 | struct tm save_tm; |
4691c06d RS |
1743 | struct tm *decoded_time; |
1744 | Lisp_Object list_args[9]; | |
34a7a267 SS |
1745 | |
1746 | if (! lisp_time_argument (specified_time, &time_spec, NULL)) | |
4691c06d RS |
1747 | error ("Invalid time specification"); |
1748 | ||
bcda42c8 | 1749 | BLOCK_INPUT; |
4691c06d | 1750 | decoded_time = localtime (&time_spec); |
bcda42c8 | 1751 | UNBLOCK_INPUT; |
177ea5f1 PE |
1752 | if (! decoded_time) |
1753 | error ("Specified time is not representable"); | |
3c887943 KH |
1754 | XSETFASTINT (list_args[0], decoded_time->tm_sec); |
1755 | XSETFASTINT (list_args[1], decoded_time->tm_min); | |
1756 | XSETFASTINT (list_args[2], decoded_time->tm_hour); | |
1757 | XSETFASTINT (list_args[3], decoded_time->tm_mday); | |
1758 | XSETFASTINT (list_args[4], decoded_time->tm_mon + 1); | |
71c3f28f EZ |
1759 | /* On 64-bit machines an int is narrower than EMACS_INT, thus the |
1760 | cast below avoids overflow in int arithmetics. */ | |
aac18aa4 | 1761 | XSETINT (list_args[5], TM_YEAR_BASE + (EMACS_INT) decoded_time->tm_year); |
3c887943 | 1762 | XSETFASTINT (list_args[6], decoded_time->tm_wday); |
4691c06d | 1763 | list_args[7] = (decoded_time->tm_isdst)? Qt : Qnil; |
3c887943 KH |
1764 | |
1765 | /* Make a copy, in case gmtime modifies the struct. */ | |
1766 | save_tm = *decoded_time; | |
bcda42c8 | 1767 | BLOCK_INPUT; |
3c887943 | 1768 | decoded_time = gmtime (&time_spec); |
bcda42c8 | 1769 | UNBLOCK_INPUT; |
3c887943 KH |
1770 | if (decoded_time == 0) |
1771 | list_args[8] = Qnil; | |
1772 | else | |
94751666 | 1773 | XSETINT (list_args[8], tm_diff (&save_tm, decoded_time)); |
4691c06d RS |
1774 | return Flist (9, list_args); |
1775 | } | |
1776 | ||
6ee9061c | 1777 | DEFUN ("encode-time", Fencode_time, Sencode_time, 6, MANY, 0, |
7ee72033 | 1778 | doc: /* Convert SECOND, MINUTE, HOUR, DAY, MONTH, YEAR and ZONE to internal time. |
a1f17501 PJ |
1779 | This is the reverse operation of `decode-time', which see. |
1780 | ZONE defaults to the current time zone rule. This can | |
1781 | be a string or t (as from `set-time-zone-rule'), or it can be a list | |
b57c2708 | 1782 | \(as from `current-time-zone') or an integer (as from `decode-time') |
9c279ddf | 1783 | applied without consideration for daylight saving time. |
a1f17501 PJ |
1784 | |
1785 | You can pass more than 7 arguments; then the first six arguments | |
1786 | are used as SECOND through YEAR, and the *last* argument is used as ZONE. | |
1787 | The intervening arguments are ignored. | |
1788 | This feature lets (apply 'encode-time (decode-time ...)) work. | |
1789 | ||
412f1fab | 1790 | Out-of-range values for SECOND, MINUTE, HOUR, DAY, or MONTH are allowed; |
a1f17501 PJ |
1791 | for example, a DAY of 0 means the day preceding the given month. |
1792 | Year numbers less than 100 are treated just like other year numbers. | |
4bfbe194 MB |
1793 | If you want them to stand for years in this century, you must do that yourself. |
1794 | ||
c24e982c RS |
1795 | Years before 1970 are not guaranteed to work. On some systems, |
1796 | year values as low as 1901 do work. | |
1797 | ||
4bfbe194 | 1798 | usage: (encode-time SECOND MINUTE HOUR DAY MONTH YEAR &optional ZONE) */) |
7ee72033 | 1799 | (nargs, args) |
6ee9061c RS |
1800 | int nargs; |
1801 | register Lisp_Object *args; | |
cce7b8a0 | 1802 | { |
1b8fa736 | 1803 | time_t time; |
c59b5089 | 1804 | struct tm tm; |
60653898 | 1805 | Lisp_Object zone = (nargs > 6 ? args[nargs - 1] : Qnil); |
6ee9061c | 1806 | |
b7826503 PJ |
1807 | CHECK_NUMBER (args[0]); /* second */ |
1808 | CHECK_NUMBER (args[1]); /* minute */ | |
1809 | CHECK_NUMBER (args[2]); /* hour */ | |
1810 | CHECK_NUMBER (args[3]); /* day */ | |
1811 | CHECK_NUMBER (args[4]); /* month */ | |
1812 | CHECK_NUMBER (args[5]); /* year */ | |
6ee9061c RS |
1813 | |
1814 | tm.tm_sec = XINT (args[0]); | |
1815 | tm.tm_min = XINT (args[1]); | |
1816 | tm.tm_hour = XINT (args[2]); | |
1817 | tm.tm_mday = XINT (args[3]); | |
1818 | tm.tm_mon = XINT (args[4]) - 1; | |
aac18aa4 | 1819 | tm.tm_year = XINT (args[5]) - TM_YEAR_BASE; |
c59b5089 PE |
1820 | tm.tm_isdst = -1; |
1821 | ||
1822 | if (CONSP (zone)) | |
1823 | zone = Fcar (zone); | |
1b8fa736 | 1824 | if (NILP (zone)) |
bcda42c8 YM |
1825 | { |
1826 | BLOCK_INPUT; | |
1827 | time = mktime (&tm); | |
1828 | UNBLOCK_INPUT; | |
1829 | } | |
c59b5089 | 1830 | else |
1b8fa736 | 1831 | { |
c59b5089 PE |
1832 | char tzbuf[100]; |
1833 | char *tzstring; | |
1834 | char **oldenv = environ, **newenv; | |
34a7a267 | 1835 | |
2e34157c | 1836 | if (EQ (zone, Qt)) |
085e9fcb EN |
1837 | tzstring = "UTC0"; |
1838 | else if (STRINGP (zone)) | |
d5db4077 | 1839 | tzstring = (char *) SDATA (zone); |
c59b5089 | 1840 | else if (INTEGERP (zone)) |
1b8fa736 | 1841 | { |
c59b5089 PE |
1842 | int abszone = abs (XINT (zone)); |
1843 | sprintf (tzbuf, "XXX%s%d:%02d:%02d", "-" + (XINT (zone) < 0), | |
1844 | abszone / (60*60), (abszone/60) % 60, abszone % 60); | |
1845 | tzstring = tzbuf; | |
1b8fa736 | 1846 | } |
c59b5089 PE |
1847 | else |
1848 | error ("Invalid time zone specification"); | |
1849 | ||
34a7a267 | 1850 | /* Set TZ before calling mktime; merely adjusting mktime's returned |
c59b5089 PE |
1851 | value doesn't suffice, since that would mishandle leap seconds. */ |
1852 | set_time_zone_rule (tzstring); | |
1853 | ||
bcda42c8 | 1854 | BLOCK_INPUT; |
c59b5089 | 1855 | time = mktime (&tm); |
bcda42c8 | 1856 | UNBLOCK_INPUT; |
c59b5089 PE |
1857 | |
1858 | /* Restore TZ to previous value. */ | |
1859 | newenv = environ; | |
1860 | environ = oldenv; | |
c0efcacf | 1861 | xfree (newenv); |
c59b5089 PE |
1862 | #ifdef LOCALTIME_CACHE |
1863 | tzset (); | |
1864 | #endif | |
1b8fa736 | 1865 | } |
1b8fa736 | 1866 | |
c59b5089 PE |
1867 | if (time == (time_t) -1) |
1868 | error ("Specified time is not representable"); | |
1869 | ||
1870 | return make_time (time); | |
cce7b8a0 RS |
1871 | } |
1872 | ||
2148f2b4 | 1873 | DEFUN ("current-time-string", Fcurrent_time_string, Scurrent_time_string, 0, 1, 0, |
7ee72033 | 1874 | doc: /* Return the current time, as a human-readable string. |
a1f17501 | 1875 | Programs can use this function to decode a time, |
d65b4235 PE |
1876 | since the number of columns in each field is fixed |
1877 | if the year is in the range 1000-9999. | |
a1f17501 PJ |
1878 | The format is `Sun Sep 16 01:03:52 1973'. |
1879 | However, see also the functions `decode-time' and `format-time-string' | |
1880 | which provide a much more powerful and general facility. | |
1881 | ||
5668fbb8 LT |
1882 | If SPECIFIED-TIME is given, it is a time to format instead of the |
1883 | current time. The argument should have the form (HIGH LOW . IGNORED). | |
1884 | Thus, you can use times obtained from `current-time' and from | |
1885 | `file-attributes'. SPECIFIED-TIME can also have the form (HIGH . LOW), | |
1886 | but this is considered obsolete. */) | |
7ee72033 | 1887 | (specified_time) |
2148f2b4 RS |
1888 | Lisp_Object specified_time; |
1889 | { | |
e3120ab5 | 1890 | time_t value; |
aac18aa4 | 1891 | struct tm *tm; |
2148f2b4 RS |
1892 | register char *tem; |
1893 | ||
34a7a267 | 1894 | if (! lisp_time_argument (specified_time, &value, NULL)) |
aac18aa4 | 1895 | error ("Invalid time specification"); |
d65b4235 PE |
1896 | |
1897 | /* Convert to a string, checking for out-of-range time stamps. | |
1898 | Don't use 'ctime', as that might dump core if VALUE is out of | |
1899 | range. */ | |
bcda42c8 | 1900 | BLOCK_INPUT; |
aac18aa4 | 1901 | tm = localtime (&value); |
bcda42c8 | 1902 | UNBLOCK_INPUT; |
d65b4235 | 1903 | if (! (tm && TM_YEAR_IN_ASCTIME_RANGE (tm->tm_year) && (tem = asctime (tm)))) |
aac18aa4 | 1904 | error ("Specified time is not representable"); |
35692fe0 | 1905 | |
d65b4235 PE |
1906 | /* Remove the trailing newline. */ |
1907 | tem[strlen (tem) - 1] = '\0'; | |
35692fe0 | 1908 | |
d65b4235 | 1909 | return build_string (tem); |
35692fe0 | 1910 | } |
c2662aea | 1911 | |
94751666 PE |
1912 | /* Yield A - B, measured in seconds. |
1913 | This function is copied from the GNU C Library. */ | |
1914 | static int | |
1915 | tm_diff (a, b) | |
e3120ab5 JB |
1916 | struct tm *a, *b; |
1917 | { | |
94751666 PE |
1918 | /* Compute intervening leap days correctly even if year is negative. |
1919 | Take care to avoid int overflow in leap day calculations, | |
1920 | but it's OK to assume that A and B are close to each other. */ | |
1921 | int a4 = (a->tm_year >> 2) + (TM_YEAR_BASE >> 2) - ! (a->tm_year & 3); | |
1922 | int b4 = (b->tm_year >> 2) + (TM_YEAR_BASE >> 2) - ! (b->tm_year & 3); | |
1923 | int a100 = a4 / 25 - (a4 % 25 < 0); | |
1924 | int b100 = b4 / 25 - (b4 % 25 < 0); | |
1925 | int a400 = a100 >> 2; | |
1926 | int b400 = b100 >> 2; | |
1927 | int intervening_leap_days = (a4 - b4) - (a100 - b100) + (a400 - b400); | |
1928 | int years = a->tm_year - b->tm_year; | |
1929 | int days = (365 * years + intervening_leap_days | |
1930 | + (a->tm_yday - b->tm_yday)); | |
1931 | return (60 * (60 * (24 * days + (a->tm_hour - b->tm_hour)) | |
1932 | + (a->tm_min - b->tm_min)) | |
8e718b4e | 1933 | + (a->tm_sec - b->tm_sec)); |
e3120ab5 JB |
1934 | } |
1935 | ||
1936 | DEFUN ("current-time-zone", Fcurrent_time_zone, Scurrent_time_zone, 0, 1, 0, | |
7ee72033 | 1937 | doc: /* Return the offset and name for the local time zone. |
a1f17501 PJ |
1938 | This returns a list of the form (OFFSET NAME). |
1939 | OFFSET is an integer number of seconds ahead of UTC (east of Greenwich). | |
1940 | A negative value means west of Greenwich. | |
1941 | NAME is a string giving the name of the time zone. | |
412f1fab | 1942 | If SPECIFIED-TIME is given, the time zone offset is determined from it |
5668fbb8 LT |
1943 | instead of using the current time. The argument should have the form |
1944 | (HIGH LOW . IGNORED). Thus, you can use times obtained from | |
1945 | `current-time' and from `file-attributes'. SPECIFIED-TIME can also | |
1946 | have the form (HIGH . LOW), but this is considered obsolete. | |
a1f17501 PJ |
1947 | |
1948 | Some operating systems cannot provide all this information to Emacs; | |
1949 | in this case, `current-time-zone' returns a list containing nil for | |
7ee72033 MB |
1950 | the data it can't find. */) |
1951 | (specified_time) | |
e3120ab5 | 1952 | Lisp_Object specified_time; |
c2662aea | 1953 | { |
e3120ab5 JB |
1954 | time_t value; |
1955 | struct tm *t; | |
177ea5f1 | 1956 | struct tm gmt; |
c2662aea | 1957 | |
bcda42c8 YM |
1958 | if (!lisp_time_argument (specified_time, &value, NULL)) |
1959 | t = NULL; | |
1960 | else | |
1961 | { | |
1962 | BLOCK_INPUT; | |
1963 | t = gmtime (&value); | |
1964 | if (t) | |
1965 | { | |
1966 | gmt = *t; | |
1967 | t = localtime (&value); | |
1968 | } | |
1969 | UNBLOCK_INPUT; | |
1970 | } | |
1971 | ||
1972 | if (t) | |
e3120ab5 | 1973 | { |
177ea5f1 PE |
1974 | int offset = tm_diff (t, &gmt); |
1975 | char *s = 0; | |
1976 | char buf[6]; | |
e3120ab5 JB |
1977 | #ifdef HAVE_TM_ZONE |
1978 | if (t->tm_zone) | |
5fd4de15 | 1979 | s = (char *)t->tm_zone; |
a7971c39 RS |
1980 | #else /* not HAVE_TM_ZONE */ |
1981 | #ifdef HAVE_TZNAME | |
1982 | if (t->tm_isdst == 0 || t->tm_isdst == 1) | |
1983 | s = tzname[t->tm_isdst]; | |
c2662aea | 1984 | #endif |
a7971c39 | 1985 | #endif /* not HAVE_TM_ZONE */ |
cda0f4da GM |
1986 | |
1987 | #if defined HAVE_TM_ZONE || defined HAVE_TZNAME | |
1988 | if (s) | |
1989 | { | |
1990 | /* On Japanese w32, we can get a Japanese string as time | |
1991 | zone name. Don't accept that. */ | |
1992 | char *p; | |
9fac18bf | 1993 | for (p = s; *p && (isalnum ((unsigned char)*p) || *p == ' '); ++p) |
cda0f4da GM |
1994 | ; |
1995 | if (p == s || *p) | |
1996 | s = NULL; | |
1997 | } | |
1998 | #endif | |
1999 | ||
e3120ab5 JB |
2000 | if (!s) |
2001 | { | |
2002 | /* No local time zone name is available; use "+-NNNN" instead. */ | |
00fc94d0 | 2003 | int am = (offset < 0 ? -offset : offset) / 60; |
e3120ab5 JB |
2004 | sprintf (buf, "%c%02d%02d", (offset < 0 ? '-' : '+'), am/60, am%60); |
2005 | s = buf; | |
2006 | } | |
2007 | return Fcons (make_number (offset), Fcons (build_string (s), Qnil)); | |
2008 | } | |
2009 | else | |
09dbcf71 | 2010 | return Fmake_list (make_number (2), Qnil); |
c2662aea JB |
2011 | } |
2012 | ||
260e2e2a KH |
2013 | /* This holds the value of `environ' produced by the previous |
2014 | call to Fset_time_zone_rule, or 0 if Fset_time_zone_rule | |
2015 | has never been called. */ | |
2016 | static char **environbuf; | |
2017 | ||
143cb9a9 | 2018 | DEFUN ("set-time-zone-rule", Fset_time_zone_rule, Sset_time_zone_rule, 1, 1, 0, |
7ee72033 | 2019 | doc: /* Set the local time zone using TZ, a string specifying a time zone rule. |
a1f17501 | 2020 | If TZ is nil, use implementation-defined default time zone information. |
7ee72033 MB |
2021 | If TZ is t, use Universal Time. */) |
2022 | (tz) | |
143cb9a9 RS |
2023 | Lisp_Object tz; |
2024 | { | |
143cb9a9 RS |
2025 | char *tzstring; |
2026 | ||
2027 | if (NILP (tz)) | |
2028 | tzstring = 0; | |
2e34157c | 2029 | else if (EQ (tz, Qt)) |
085e9fcb | 2030 | tzstring = "UTC0"; |
143cb9a9 RS |
2031 | else |
2032 | { | |
b7826503 | 2033 | CHECK_STRING (tz); |
d5db4077 | 2034 | tzstring = (char *) SDATA (tz); |
143cb9a9 RS |
2035 | } |
2036 | ||
c59b5089 PE |
2037 | set_time_zone_rule (tzstring); |
2038 | if (environbuf) | |
2039 | free (environbuf); | |
2040 | environbuf = environ; | |
2041 | ||
2042 | return Qnil; | |
2043 | } | |
2044 | ||
e0bf9faf PE |
2045 | #ifdef LOCALTIME_CACHE |
2046 | ||
2047 | /* These two values are known to load tz files in buggy implementations, | |
2048 | i.e. Solaris 1 executables running under either Solaris 1 or Solaris 2. | |
1155c453 | 2049 | Their values shouldn't matter in non-buggy implementations. |
34a7a267 | 2050 | We don't use string literals for these strings, |
1155c453 RS |
2051 | since if a string in the environment is in readonly |
2052 | storage, it runs afoul of bugs in SVR4 and Solaris 2.3. | |
2053 | See Sun bugs 1113095 and 1114114, ``Timezone routines | |
2054 | improperly modify environment''. */ | |
2055 | ||
e0bf9faf PE |
2056 | static char set_time_zone_rule_tz1[] = "TZ=GMT+0"; |
2057 | static char set_time_zone_rule_tz2[] = "TZ=GMT+1"; | |
2058 | ||
2059 | #endif | |
1155c453 | 2060 | |
c59b5089 PE |
2061 | /* Set the local time zone rule to TZSTRING. |
2062 | This allocates memory into `environ', which it is the caller's | |
2063 | responsibility to free. */ | |
acb7cc89 | 2064 | |
a92ae0ce | 2065 | void |
c59b5089 PE |
2066 | set_time_zone_rule (tzstring) |
2067 | char *tzstring; | |
2068 | { | |
2069 | int envptrs; | |
2070 | char **from, **to, **newenv; | |
2071 | ||
aafe5147 | 2072 | /* Make the ENVIRON vector longer with room for TZSTRING. */ |
143cb9a9 RS |
2073 | for (from = environ; *from; from++) |
2074 | continue; | |
2075 | envptrs = from - environ + 2; | |
2076 | newenv = to = (char **) xmalloc (envptrs * sizeof (char *) | |
2077 | + (tzstring ? strlen (tzstring) + 4 : 0)); | |
aafe5147 RS |
2078 | |
2079 | /* Add TZSTRING to the end of environ, as a value for TZ. */ | |
143cb9a9 RS |
2080 | if (tzstring) |
2081 | { | |
2082 | char *t = (char *) (to + envptrs); | |
2083 | strcpy (t, "TZ="); | |
2084 | strcat (t, tzstring); | |
2085 | *to++ = t; | |
2086 | } | |
2087 | ||
aafe5147 RS |
2088 | /* Copy the old environ vector elements into NEWENV, |
2089 | but don't copy the TZ variable. | |
2090 | So we have only one definition of TZ, which came from TZSTRING. */ | |
143cb9a9 RS |
2091 | for (from = environ; *from; from++) |
2092 | if (strncmp (*from, "TZ=", 3) != 0) | |
2093 | *to++ = *from; | |
2094 | *to = 0; | |
2095 | ||
2096 | environ = newenv; | |
143cb9a9 | 2097 | |
aafe5147 RS |
2098 | /* If we do have a TZSTRING, NEWENV points to the vector slot where |
2099 | the TZ variable is stored. If we do not have a TZSTRING, | |
2100 | TO points to the vector slot which has the terminating null. */ | |
2101 | ||
143cb9a9 | 2102 | #ifdef LOCALTIME_CACHE |
aafe5147 RS |
2103 | { |
2104 | /* In SunOS 4.1.3_U1 and 4.1.4, if TZ has a value like | |
2105 | "US/Pacific" that loads a tz file, then changes to a value like | |
2106 | "XXX0" that does not load a tz file, and then changes back to | |
2107 | its original value, the last change is (incorrectly) ignored. | |
2108 | Also, if TZ changes twice in succession to values that do | |
2109 | not load a tz file, tzset can dump core (see Sun bug#1225179). | |
2110 | The following code works around these bugs. */ | |
2111 | ||
aafe5147 RS |
2112 | if (tzstring) |
2113 | { | |
2114 | /* Temporarily set TZ to a value that loads a tz file | |
2115 | and that differs from tzstring. */ | |
2116 | char *tz = *newenv; | |
1155c453 RS |
2117 | *newenv = (strcmp (tzstring, set_time_zone_rule_tz1 + 3) == 0 |
2118 | ? set_time_zone_rule_tz2 : set_time_zone_rule_tz1); | |
aafe5147 RS |
2119 | tzset (); |
2120 | *newenv = tz; | |
2121 | } | |
2122 | else | |
2123 | { | |
2124 | /* The implied tzstring is unknown, so temporarily set TZ to | |
2125 | two different values that each load a tz file. */ | |
1155c453 | 2126 | *to = set_time_zone_rule_tz1; |
aafe5147 RS |
2127 | to[1] = 0; |
2128 | tzset (); | |
1155c453 | 2129 | *to = set_time_zone_rule_tz2; |
aafe5147 RS |
2130 | tzset (); |
2131 | *to = 0; | |
2132 | } | |
2133 | ||
2134 | /* Now TZ has the desired value, and tzset can be invoked safely. */ | |
2135 | } | |
2136 | ||
143cb9a9 RS |
2137 | tzset (); |
2138 | #endif | |
143cb9a9 | 2139 | } |
35692fe0 | 2140 | \f |
fb8106e8 KH |
2141 | /* Insert NARGS Lisp objects in the array ARGS by calling INSERT_FUNC |
2142 | (if a type of object is Lisp_Int) or INSERT_FROM_STRING_FUNC (if a | |
2143 | type of object is Lisp_String). INHERIT is passed to | |
2144 | INSERT_FROM_STRING_FUNC as the last argument. */ | |
2145 | ||
acb7cc89 | 2146 | static void |
fb8106e8 KH |
2147 | general_insert_function (insert_func, insert_from_string_func, |
2148 | inherit, nargs, args) | |
439e8af4 | 2149 | void (*insert_func) P_ ((const unsigned char *, int)); |
1f24f4fd | 2150 | void (*insert_from_string_func) P_ ((Lisp_Object, int, int, int, int, int)); |
fb8106e8 KH |
2151 | int inherit, nargs; |
2152 | register Lisp_Object *args; | |
2153 | { | |
2154 | register int argnum; | |
2155 | register Lisp_Object val; | |
2156 | ||
2157 | for (argnum = 0; argnum < nargs; argnum++) | |
2158 | { | |
2159 | val = args[argnum]; | |
fb8106e8 KH |
2160 | if (INTEGERP (val)) |
2161 | { | |
d5c2c403 | 2162 | unsigned char str[MAX_MULTIBYTE_LENGTH]; |
fb8106e8 KH |
2163 | int len; |
2164 | ||
2165 | if (!NILP (current_buffer->enable_multibyte_characters)) | |
d5c2c403 | 2166 | len = CHAR_STRING (XFASTINT (val), str); |
fb8106e8 | 2167 | else |
13c148b8 | 2168 | { |
d5c2c403 KH |
2169 | str[0] = (SINGLE_BYTE_CHAR_P (XINT (val)) |
2170 | ? XINT (val) | |
2171 | : multibyte_char_to_unibyte (XINT (val), Qnil)); | |
13c148b8 KH |
2172 | len = 1; |
2173 | } | |
fb8106e8 KH |
2174 | (*insert_func) (str, len); |
2175 | } | |
2176 | else if (STRINGP (val)) | |
2177 | { | |
1f24f4fd | 2178 | (*insert_from_string_func) (val, 0, 0, |
d5db4077 KR |
2179 | SCHARS (val), |
2180 | SBYTES (val), | |
1f24f4fd | 2181 | inherit); |
fb8106e8 KH |
2182 | } |
2183 | else | |
b7f34213 | 2184 | wrong_type_argument (Qchar_or_string_p, val); |
fb8106e8 KH |
2185 | } |
2186 | } | |
2187 | ||
35692fe0 JB |
2188 | void |
2189 | insert1 (arg) | |
2190 | Lisp_Object arg; | |
2191 | { | |
2192 | Finsert (1, &arg); | |
2193 | } | |
2194 | ||
52b14ac0 JB |
2195 | |
2196 | /* Callers passing one argument to Finsert need not gcpro the | |
2197 | argument "array", since the only element of the array will | |
2198 | not be used after calling insert or insert_from_string, so | |
2199 | we don't care if it gets trashed. */ | |
2200 | ||
35692fe0 | 2201 | DEFUN ("insert", Finsert, Sinsert, 0, MANY, 0, |
7ee72033 | 2202 | doc: /* Insert the arguments, either strings or characters, at point. |
a1f17501 PJ |
2203 | Point and before-insertion markers move forward to end up |
2204 | after the inserted text. | |
2205 | Any other markers at the point of insertion remain before the text. | |
2206 | ||
2207 | If the current buffer is multibyte, unibyte strings are converted | |
72bb55c6 | 2208 | to multibyte for insertion (see `string-make-multibyte'). |
a1f17501 | 2209 | If the current buffer is unibyte, multibyte strings are converted |
72bb55c6 KS |
2210 | to unibyte for insertion (see `string-make-unibyte'). |
2211 | ||
2212 | When operating on binary data, it may be necessary to preserve the | |
2213 | original bytes of a unibyte string when inserting it into a multibyte | |
2214 | buffer; to accomplish this, apply `string-as-multibyte' to the string | |
2215 | and insert the result. | |
4bfbe194 MB |
2216 | |
2217 | usage: (insert &rest ARGS) */) | |
7ee72033 | 2218 | (nargs, args) |
35692fe0 JB |
2219 | int nargs; |
2220 | register Lisp_Object *args; | |
2221 | { | |
fb8106e8 | 2222 | general_insert_function (insert, insert_from_string, 0, nargs, args); |
be91036a RS |
2223 | return Qnil; |
2224 | } | |
2225 | ||
2226 | DEFUN ("insert-and-inherit", Finsert_and_inherit, Sinsert_and_inherit, | |
2227 | 0, MANY, 0, | |
7ee72033 | 2228 | doc: /* Insert the arguments at point, inheriting properties from adjoining text. |
a1f17501 PJ |
2229 | Point and before-insertion markers move forward to end up |
2230 | after the inserted text. | |
2231 | Any other markers at the point of insertion remain before the text. | |
2232 | ||
2233 | If the current buffer is multibyte, unibyte strings are converted | |
2234 | to multibyte for insertion (see `unibyte-char-to-multibyte'). | |
2235 | If the current buffer is unibyte, multibyte strings are converted | |
4bfbe194 MB |
2236 | to unibyte for insertion. |
2237 | ||
2238 | usage: (insert-and-inherit &rest ARGS) */) | |
7ee72033 | 2239 | (nargs, args) |
be91036a RS |
2240 | int nargs; |
2241 | register Lisp_Object *args; | |
2242 | { | |
fb8106e8 KH |
2243 | general_insert_function (insert_and_inherit, insert_from_string, 1, |
2244 | nargs, args); | |
35692fe0 JB |
2245 | return Qnil; |
2246 | } | |
2247 | ||
2248 | DEFUN ("insert-before-markers", Finsert_before_markers, Sinsert_before_markers, 0, MANY, 0, | |
7ee72033 | 2249 | doc: /* Insert strings or characters at point, relocating markers after the text. |
a1f17501 PJ |
2250 | Point and markers move forward to end up after the inserted text. |
2251 | ||
2252 | If the current buffer is multibyte, unibyte strings are converted | |
2253 | to multibyte for insertion (see `unibyte-char-to-multibyte'). | |
2254 | If the current buffer is unibyte, multibyte strings are converted | |
4bfbe194 MB |
2255 | to unibyte for insertion. |
2256 | ||
2257 | usage: (insert-before-markers &rest ARGS) */) | |
7ee72033 | 2258 | (nargs, args) |
35692fe0 JB |
2259 | int nargs; |
2260 | register Lisp_Object *args; | |
2261 | { | |
fb8106e8 KH |
2262 | general_insert_function (insert_before_markers, |
2263 | insert_from_string_before_markers, 0, | |
2264 | nargs, args); | |
be91036a RS |
2265 | return Qnil; |
2266 | } | |
2267 | ||
a0d76c27 EN |
2268 | DEFUN ("insert-before-markers-and-inherit", Finsert_and_inherit_before_markers, |
2269 | Sinsert_and_inherit_before_markers, 0, MANY, 0, | |
7ee72033 | 2270 | doc: /* Insert text at point, relocating markers and inheriting properties. |
a1f17501 PJ |
2271 | Point and markers move forward to end up after the inserted text. |
2272 | ||
2273 | If the current buffer is multibyte, unibyte strings are converted | |
2274 | to multibyte for insertion (see `unibyte-char-to-multibyte'). | |
2275 | If the current buffer is unibyte, multibyte strings are converted | |
4bfbe194 MB |
2276 | to unibyte for insertion. |
2277 | ||
2278 | usage: (insert-before-markers-and-inherit &rest ARGS) */) | |
7ee72033 | 2279 | (nargs, args) |
be91036a RS |
2280 | int nargs; |
2281 | register Lisp_Object *args; | |
2282 | { | |
fb8106e8 KH |
2283 | general_insert_function (insert_before_markers_and_inherit, |
2284 | insert_from_string_before_markers, 1, | |
2285 | nargs, args); | |
35692fe0 JB |
2286 | return Qnil; |
2287 | } | |
2288 | \f | |
e2eeabbb | 2289 | DEFUN ("insert-char", Finsert_char, Sinsert_char, 2, 3, 0, |
9671c13a | 2290 | doc: /* Insert COUNT copies of CHARACTER. |
a1f17501 PJ |
2291 | Point, and before-insertion markers, are relocated as in the function `insert'. |
2292 | The optional third arg INHERIT, if non-nil, says to inherit text properties | |
7ee72033 MB |
2293 | from adjoining text, if those properties are sticky. */) |
2294 | (character, count, inherit) | |
2591ec64 | 2295 | Lisp_Object character, count, inherit; |
35692fe0 JB |
2296 | { |
2297 | register unsigned char *string; | |
2298 | register int strlen; | |
2299 | register int i, n; | |
fb8106e8 | 2300 | int len; |
d5c2c403 | 2301 | unsigned char str[MAX_MULTIBYTE_LENGTH]; |
35692fe0 | 2302 | |
b7826503 PJ |
2303 | CHECK_NUMBER (character); |
2304 | CHECK_NUMBER (count); | |
35692fe0 | 2305 | |
fb8106e8 | 2306 | if (!NILP (current_buffer->enable_multibyte_characters)) |
d5c2c403 | 2307 | len = CHAR_STRING (XFASTINT (character), str); |
fb8106e8 | 2308 | else |
d5c2c403 | 2309 | str[0] = XFASTINT (character), len = 1; |
fb8106e8 | 2310 | n = XINT (count) * len; |
35692fe0 JB |
2311 | if (n <= 0) |
2312 | return Qnil; | |
fb8106e8 | 2313 | strlen = min (n, 256 * len); |
35692fe0 JB |
2314 | string = (unsigned char *) alloca (strlen); |
2315 | for (i = 0; i < strlen; i++) | |
fb8106e8 | 2316 | string[i] = str[i % len]; |
35692fe0 JB |
2317 | while (n >= strlen) |
2318 | { | |
54e42e2d | 2319 | QUIT; |
e2eeabbb RS |
2320 | if (!NILP (inherit)) |
2321 | insert_and_inherit (string, strlen); | |
2322 | else | |
2323 | insert (string, strlen); | |
35692fe0 JB |
2324 | n -= strlen; |
2325 | } | |
2326 | if (n > 0) | |
83951f1e KH |
2327 | { |
2328 | if (!NILP (inherit)) | |
2329 | insert_and_inherit (string, n); | |
2330 | else | |
2331 | insert (string, n); | |
2332 | } | |
35692fe0 JB |
2333 | return Qnil; |
2334 | } | |
2335 | ||
2336 | \f | |
ffd56f97 JB |
2337 | /* Making strings from buffer contents. */ |
2338 | ||
2339 | /* Return a Lisp_String containing the text of the current buffer from | |
74d6d8c5 | 2340 | START to END. If text properties are in use and the current buffer |
eb8c3be9 | 2341 | has properties in the range specified, the resulting string will also |
260e2e2a | 2342 | have them, if PROPS is nonzero. |
ffd56f97 JB |
2343 | |
2344 | We don't want to use plain old make_string here, because it calls | |
2345 | make_uninit_string, which can cause the buffer arena to be | |
2346 | compacted. make_string has no way of knowing that the data has | |
2347 | been moved, and thus copies the wrong data into the string. This | |
2348 | doesn't effect most of the other users of make_string, so it should | |
2349 | be left as is. But we should use this function when conjuring | |
2350 | buffer substrings. */ | |
74d6d8c5 | 2351 | |
ffd56f97 | 2352 | Lisp_Object |
260e2e2a | 2353 | make_buffer_string (start, end, props) |
ffd56f97 | 2354 | int start, end; |
260e2e2a | 2355 | int props; |
ffd56f97 | 2356 | { |
ec1c14f6 RS |
2357 | int start_byte = CHAR_TO_BYTE (start); |
2358 | int end_byte = CHAR_TO_BYTE (end); | |
ffd56f97 | 2359 | |
88441c8e RS |
2360 | return make_buffer_string_both (start, start_byte, end, end_byte, props); |
2361 | } | |
2362 | ||
2363 | /* Return a Lisp_String containing the text of the current buffer from | |
2364 | START / START_BYTE to END / END_BYTE. | |
2365 | ||
2366 | If text properties are in use and the current buffer | |
2367 | has properties in the range specified, the resulting string will also | |
2368 | have them, if PROPS is nonzero. | |
2369 | ||
2370 | We don't want to use plain old make_string here, because it calls | |
2371 | make_uninit_string, which can cause the buffer arena to be | |
2372 | compacted. make_string has no way of knowing that the data has | |
2373 | been moved, and thus copies the wrong data into the string. This | |
2374 | doesn't effect most of the other users of make_string, so it should | |
2375 | be left as is. But we should use this function when conjuring | |
2376 | buffer substrings. */ | |
2377 | ||
2378 | Lisp_Object | |
2379 | make_buffer_string_both (start, start_byte, end, end_byte, props) | |
2380 | int start, start_byte, end, end_byte; | |
2381 | int props; | |
2382 | { | |
2383 | Lisp_Object result, tem, tem1; | |
2384 | ||
ffd56f97 JB |
2385 | if (start < GPT && GPT < end) |
2386 | move_gap (start); | |
2387 | ||
5f75e666 RS |
2388 | if (! NILP (current_buffer->enable_multibyte_characters)) |
2389 | result = make_uninit_multibyte_string (end - start, end_byte - start_byte); | |
2390 | else | |
2391 | result = make_uninit_string (end - start); | |
d5db4077 | 2392 | bcopy (BYTE_POS_ADDR (start_byte), SDATA (result), |
ec1c14f6 | 2393 | end_byte - start_byte); |
ffd56f97 | 2394 | |
260e2e2a | 2395 | /* If desired, update and copy the text properties. */ |
260e2e2a KH |
2396 | if (props) |
2397 | { | |
2398 | update_buffer_properties (start, end); | |
2399 | ||
2400 | tem = Fnext_property_change (make_number (start), Qnil, make_number (end)); | |
2401 | tem1 = Ftext_properties_at (make_number (start), Qnil); | |
2402 | ||
2403 | if (XINT (tem) != end || !NILP (tem1)) | |
ec1c14f6 RS |
2404 | copy_intervals_to_string (result, current_buffer, start, |
2405 | end - start); | |
260e2e2a | 2406 | } |
74d6d8c5 | 2407 | |
ffd56f97 JB |
2408 | return result; |
2409 | } | |
35692fe0 | 2410 | |
260e2e2a KH |
2411 | /* Call Vbuffer_access_fontify_functions for the range START ... END |
2412 | in the current buffer, if necessary. */ | |
2413 | ||
2414 | static void | |
2415 | update_buffer_properties (start, end) | |
2416 | int start, end; | |
2417 | { | |
260e2e2a KH |
2418 | /* If this buffer has some access functions, |
2419 | call them, specifying the range of the buffer being accessed. */ | |
2420 | if (!NILP (Vbuffer_access_fontify_functions)) | |
2421 | { | |
2422 | Lisp_Object args[3]; | |
2423 | Lisp_Object tem; | |
2424 | ||
2425 | args[0] = Qbuffer_access_fontify_functions; | |
2426 | XSETINT (args[1], start); | |
2427 | XSETINT (args[2], end); | |
2428 | ||
2429 | /* But don't call them if we can tell that the work | |
2430 | has already been done. */ | |
2431 | if (!NILP (Vbuffer_access_fontified_property)) | |
2432 | { | |
2433 | tem = Ftext_property_any (args[1], args[2], | |
2434 | Vbuffer_access_fontified_property, | |
2435 | Qnil, Qnil); | |
2436 | if (! NILP (tem)) | |
ced1d19a | 2437 | Frun_hook_with_args (3, args); |
260e2e2a KH |
2438 | } |
2439 | else | |
ced1d19a | 2440 | Frun_hook_with_args (3, args); |
260e2e2a | 2441 | } |
260e2e2a KH |
2442 | } |
2443 | ||
35692fe0 | 2444 | DEFUN ("buffer-substring", Fbuffer_substring, Sbuffer_substring, 2, 2, 0, |
7ee72033 | 2445 | doc: /* Return the contents of part of the current buffer as a string. |
a1f17501 PJ |
2446 | The two arguments START and END are character positions; |
2447 | they can be in either order. | |
2448 | The string returned is multibyte if the buffer is multibyte. | |
2449 | ||
2450 | This function copies the text properties of that part of the buffer | |
2451 | into the result string; if you don't want the text properties, | |
7ee72033 MB |
2452 | use `buffer-substring-no-properties' instead. */) |
2453 | (start, end) | |
2591ec64 | 2454 | Lisp_Object start, end; |
35692fe0 | 2455 | { |
2591ec64 | 2456 | register int b, e; |
35692fe0 | 2457 | |
2591ec64 EN |
2458 | validate_region (&start, &end); |
2459 | b = XINT (start); | |
2460 | e = XINT (end); | |
35692fe0 | 2461 | |
2591ec64 | 2462 | return make_buffer_string (b, e, 1); |
260e2e2a KH |
2463 | } |
2464 | ||
2465 | DEFUN ("buffer-substring-no-properties", Fbuffer_substring_no_properties, | |
2466 | Sbuffer_substring_no_properties, 2, 2, 0, | |
7ee72033 | 2467 | doc: /* Return the characters of part of the buffer, without the text properties. |
a1f17501 | 2468 | The two arguments START and END are character positions; |
7ee72033 MB |
2469 | they can be in either order. */) |
2470 | (start, end) | |
2591ec64 | 2471 | Lisp_Object start, end; |
260e2e2a | 2472 | { |
2591ec64 | 2473 | register int b, e; |
260e2e2a | 2474 | |
2591ec64 EN |
2475 | validate_region (&start, &end); |
2476 | b = XINT (start); | |
2477 | e = XINT (end); | |
260e2e2a | 2478 | |
2591ec64 | 2479 | return make_buffer_string (b, e, 0); |
35692fe0 JB |
2480 | } |
2481 | ||
2482 | DEFUN ("buffer-string", Fbuffer_string, Sbuffer_string, 0, 0, 0, | |
7ee72033 | 2483 | doc: /* Return the contents of the current buffer as a string. |
a1f17501 | 2484 | If narrowing is in effect, this function returns only the visible part |
7ee72033 MB |
2485 | of the buffer. */) |
2486 | () | |
35692fe0 | 2487 | { |
0daf6e8d | 2488 | return make_buffer_string (BEGV, ZV, 1); |
35692fe0 JB |
2489 | } |
2490 | ||
2491 | DEFUN ("insert-buffer-substring", Finsert_buffer_substring, Sinsert_buffer_substring, | |
deb8e082 | 2492 | 1, 3, 0, |
658ec670 | 2493 | doc: /* Insert before point a substring of the contents of BUFFER. |
a1f17501 | 2494 | BUFFER may be a buffer or a buffer name. |
412f1fab JB |
2495 | Arguments START and END are character positions specifying the substring. |
2496 | They default to the values of (point-min) and (point-max) in BUFFER. */) | |
658ec670 JB |
2497 | (buffer, start, end) |
2498 | Lisp_Object buffer, start, end; | |
35692fe0 | 2499 | { |
2591ec64 | 2500 | register int b, e, temp; |
260e2e2a | 2501 | register struct buffer *bp, *obuf; |
658ec670 | 2502 | Lisp_Object buf; |
35692fe0 | 2503 | |
658ec670 JB |
2504 | buf = Fget_buffer (buffer); |
2505 | if (NILP (buf)) | |
2506 | nsberror (buffer); | |
2507 | bp = XBUFFER (buf); | |
93b62e82 KH |
2508 | if (NILP (bp->name)) |
2509 | error ("Selecting deleted buffer"); | |
35692fe0 | 2510 | |
2591ec64 EN |
2511 | if (NILP (start)) |
2512 | b = BUF_BEGV (bp); | |
35692fe0 JB |
2513 | else |
2514 | { | |
b7826503 | 2515 | CHECK_NUMBER_COERCE_MARKER (start); |
2591ec64 | 2516 | b = XINT (start); |
35692fe0 | 2517 | } |
2591ec64 EN |
2518 | if (NILP (end)) |
2519 | e = BUF_ZV (bp); | |
35692fe0 JB |
2520 | else |
2521 | { | |
b7826503 | 2522 | CHECK_NUMBER_COERCE_MARKER (end); |
2591ec64 | 2523 | e = XINT (end); |
35692fe0 JB |
2524 | } |
2525 | ||
2591ec64 EN |
2526 | if (b > e) |
2527 | temp = b, b = e, e = temp; | |
35692fe0 | 2528 | |
2591ec64 EN |
2529 | if (!(BUF_BEGV (bp) <= b && e <= BUF_ZV (bp))) |
2530 | args_out_of_range (start, end); | |
35692fe0 | 2531 | |
260e2e2a KH |
2532 | obuf = current_buffer; |
2533 | set_buffer_internal_1 (bp); | |
2591ec64 | 2534 | update_buffer_properties (b, e); |
260e2e2a KH |
2535 | set_buffer_internal_1 (obuf); |
2536 | ||
2591ec64 | 2537 | insert_from_buffer (bp, b, e - b, 0); |
35692fe0 JB |
2538 | return Qnil; |
2539 | } | |
e9cf2084 RS |
2540 | |
2541 | DEFUN ("compare-buffer-substrings", Fcompare_buffer_substrings, Scompare_buffer_substrings, | |
deb8e082 | 2542 | 6, 6, 0, |
7ee72033 | 2543 | doc: /* Compare two substrings of two buffers; return result as number. |
a1f17501 PJ |
2544 | the value is -N if first string is less after N-1 chars, |
2545 | +N if first string is greater after N-1 chars, or 0 if strings match. | |
2546 | Each substring is represented as three arguments: BUFFER, START and END. | |
2547 | That makes six args in all, three for each substring. | |
2548 | ||
2549 | The value of `case-fold-search' in the current buffer | |
7ee72033 MB |
2550 | determines whether case is significant or ignored. */) |
2551 | (buffer1, start1, end1, buffer2, start2, end2) | |
e9cf2084 RS |
2552 | Lisp_Object buffer1, start1, end1, buffer2, start2, end2; |
2553 | { | |
07422a12 | 2554 | register int begp1, endp1, begp2, endp2, temp; |
e9cf2084 | 2555 | register struct buffer *bp1, *bp2; |
1149fd6f | 2556 | register Lisp_Object trt |
e9cf2084 | 2557 | = (!NILP (current_buffer->case_fold_search) |
60758816 | 2558 | ? current_buffer->case_canon_table : Qnil); |
ec1c14f6 | 2559 | int chars = 0; |
07422a12 | 2560 | int i1, i2, i1_byte, i2_byte; |
e9cf2084 RS |
2561 | |
2562 | /* Find the first buffer and its substring. */ | |
2563 | ||
2564 | if (NILP (buffer1)) | |
2565 | bp1 = current_buffer; | |
2566 | else | |
2567 | { | |
3fff2dfa RS |
2568 | Lisp_Object buf1; |
2569 | buf1 = Fget_buffer (buffer1); | |
2570 | if (NILP (buf1)) | |
2571 | nsberror (buffer1); | |
2572 | bp1 = XBUFFER (buf1); | |
93b62e82 KH |
2573 | if (NILP (bp1->name)) |
2574 | error ("Selecting deleted buffer"); | |
e9cf2084 RS |
2575 | } |
2576 | ||
2577 | if (NILP (start1)) | |
2578 | begp1 = BUF_BEGV (bp1); | |
2579 | else | |
2580 | { | |
b7826503 | 2581 | CHECK_NUMBER_COERCE_MARKER (start1); |
e9cf2084 RS |
2582 | begp1 = XINT (start1); |
2583 | } | |
2584 | if (NILP (end1)) | |
2585 | endp1 = BUF_ZV (bp1); | |
2586 | else | |
2587 | { | |
b7826503 | 2588 | CHECK_NUMBER_COERCE_MARKER (end1); |
e9cf2084 RS |
2589 | endp1 = XINT (end1); |
2590 | } | |
2591 | ||
2592 | if (begp1 > endp1) | |
2593 | temp = begp1, begp1 = endp1, endp1 = temp; | |
2594 | ||
2595 | if (!(BUF_BEGV (bp1) <= begp1 | |
2596 | && begp1 <= endp1 | |
2597 | && endp1 <= BUF_ZV (bp1))) | |
2598 | args_out_of_range (start1, end1); | |
2599 | ||
2600 | /* Likewise for second substring. */ | |
2601 | ||
2602 | if (NILP (buffer2)) | |
2603 | bp2 = current_buffer; | |
2604 | else | |
2605 | { | |
3fff2dfa RS |
2606 | Lisp_Object buf2; |
2607 | buf2 = Fget_buffer (buffer2); | |
2608 | if (NILP (buf2)) | |
2609 | nsberror (buffer2); | |
3b1fdd85 | 2610 | bp2 = XBUFFER (buf2); |
93b62e82 KH |
2611 | if (NILP (bp2->name)) |
2612 | error ("Selecting deleted buffer"); | |
e9cf2084 RS |
2613 | } |
2614 | ||
2615 | if (NILP (start2)) | |
2616 | begp2 = BUF_BEGV (bp2); | |
2617 | else | |
2618 | { | |
b7826503 | 2619 | CHECK_NUMBER_COERCE_MARKER (start2); |
e9cf2084 RS |
2620 | begp2 = XINT (start2); |
2621 | } | |
2622 | if (NILP (end2)) | |
2623 | endp2 = BUF_ZV (bp2); | |
2624 | else | |
2625 | { | |
b7826503 | 2626 | CHECK_NUMBER_COERCE_MARKER (end2); |
e9cf2084 RS |
2627 | endp2 = XINT (end2); |
2628 | } | |
2629 | ||
2630 | if (begp2 > endp2) | |
2631 | temp = begp2, begp2 = endp2, endp2 = temp; | |
2632 | ||
2633 | if (!(BUF_BEGV (bp2) <= begp2 | |
2634 | && begp2 <= endp2 | |
2635 | && endp2 <= BUF_ZV (bp2))) | |
2636 | args_out_of_range (start2, end2); | |
2637 | ||
07422a12 RS |
2638 | i1 = begp1; |
2639 | i2 = begp2; | |
2640 | i1_byte = buf_charpos_to_bytepos (bp1, i1); | |
2641 | i2_byte = buf_charpos_to_bytepos (bp2, i2); | |
e9cf2084 | 2642 | |
07422a12 | 2643 | while (i1 < endp1 && i2 < endp2) |
e9cf2084 | 2644 | { |
07422a12 RS |
2645 | /* When we find a mismatch, we must compare the |
2646 | characters, not just the bytes. */ | |
2647 | int c1, c2; | |
ec1c14f6 | 2648 | |
2221451f RS |
2649 | QUIT; |
2650 | ||
07422a12 RS |
2651 | if (! NILP (bp1->enable_multibyte_characters)) |
2652 | { | |
2653 | c1 = BUF_FETCH_MULTIBYTE_CHAR (bp1, i1_byte); | |
2654 | BUF_INC_POS (bp1, i1_byte); | |
2655 | i1++; | |
2656 | } | |
2657 | else | |
2658 | { | |
2659 | c1 = BUF_FETCH_BYTE (bp1, i1); | |
2660 | c1 = unibyte_char_to_multibyte (c1); | |
2661 | i1++; | |
2662 | } | |
2663 | ||
2664 | if (! NILP (bp2->enable_multibyte_characters)) | |
2665 | { | |
2666 | c2 = BUF_FETCH_MULTIBYTE_CHAR (bp2, i2_byte); | |
2667 | BUF_INC_POS (bp2, i2_byte); | |
2668 | i2++; | |
2669 | } | |
2670 | else | |
2671 | { | |
2672 | c2 = BUF_FETCH_BYTE (bp2, i2); | |
2673 | c2 = unibyte_char_to_multibyte (c2); | |
2674 | i2++; | |
2675 | } | |
ec1c14f6 | 2676 | |
1149fd6f | 2677 | if (!NILP (trt)) |
e9cf2084 | 2678 | { |
1149fd6f SM |
2679 | c1 = CHAR_TABLE_TRANSLATE (trt, c1); |
2680 | c2 = CHAR_TABLE_TRANSLATE (trt, c2); | |
e9cf2084 RS |
2681 | } |
2682 | if (c1 < c2) | |
ec1c14f6 | 2683 | return make_number (- 1 - chars); |
e9cf2084 | 2684 | if (c1 > c2) |
ec1c14f6 | 2685 | return make_number (chars + 1); |
07422a12 RS |
2686 | |
2687 | chars++; | |
e9cf2084 RS |
2688 | } |
2689 | ||
2690 | /* The strings match as far as they go. | |
2691 | If one is shorter, that one is less. */ | |
07422a12 | 2692 | if (chars < endp1 - begp1) |
ec1c14f6 | 2693 | return make_number (chars + 1); |
07422a12 | 2694 | else if (chars < endp2 - begp2) |
ec1c14f6 | 2695 | return make_number (- chars - 1); |
e9cf2084 RS |
2696 | |
2697 | /* Same length too => they are equal. */ | |
2698 | return make_number (0); | |
2699 | } | |
35692fe0 | 2700 | \f |
d5a539cd RS |
2701 | static Lisp_Object |
2702 | subst_char_in_region_unwind (arg) | |
2703 | Lisp_Object arg; | |
2704 | { | |
2705 | return current_buffer->undo_list = arg; | |
2706 | } | |
2707 | ||
c8e76b47 RS |
2708 | static Lisp_Object |
2709 | subst_char_in_region_unwind_1 (arg) | |
2710 | Lisp_Object arg; | |
2711 | { | |
2712 | return current_buffer->filename = arg; | |
2713 | } | |
2714 | ||
35692fe0 | 2715 | DEFUN ("subst-char-in-region", Fsubst_char_in_region, |
deb8e082 | 2716 | Ssubst_char_in_region, 4, 5, 0, |
7ee72033 | 2717 | doc: /* From START to END, replace FROMCHAR with TOCHAR each time it occurs. |
a1f17501 PJ |
2718 | If optional arg NOUNDO is non-nil, don't record this change for undo |
2719 | and don't mark the buffer as really changed. | |
7ee72033 MB |
2720 | Both characters must have the same length of multi-byte form. */) |
2721 | (start, end, fromchar, tochar, noundo) | |
35692fe0 JB |
2722 | Lisp_Object start, end, fromchar, tochar, noundo; |
2723 | { | |
84246b95 | 2724 | register int pos, pos_byte, stop, i, len, end_byte; |
0f2e2a3b SM |
2725 | /* Keep track of the first change in the buffer: |
2726 | if 0 we haven't found it yet. | |
2727 | if < 0 we've found it and we've run the before-change-function. | |
2728 | if > 0 we've actually performed it and the value is its position. */ | |
60b96ee7 | 2729 | int changed = 0; |
d5c2c403 KH |
2730 | unsigned char fromstr[MAX_MULTIBYTE_LENGTH], tostr[MAX_MULTIBYTE_LENGTH]; |
2731 | unsigned char *p; | |
aed13378 | 2732 | int count = SPECPDL_INDEX (); |
aa801467 KH |
2733 | #define COMBINING_NO 0 |
2734 | #define COMBINING_BEFORE 1 | |
2735 | #define COMBINING_AFTER 2 | |
2736 | #define COMBINING_BOTH (COMBINING_BEFORE | COMBINING_AFTER) | |
2737 | int maybe_byte_combining = COMBINING_NO; | |
2483cf58 | 2738 | int last_changed = 0; |
7439e5b9 | 2739 | int multibyte_p = !NILP (current_buffer->enable_multibyte_characters); |
35692fe0 | 2740 | |
0f2e2a3b SM |
2741 | restart: |
2742 | ||
35692fe0 | 2743 | validate_region (&start, &end); |
b7826503 PJ |
2744 | CHECK_NUMBER (fromchar); |
2745 | CHECK_NUMBER (tochar); | |
35692fe0 | 2746 | |
7439e5b9 | 2747 | if (multibyte_p) |
fb8106e8 | 2748 | { |
d5c2c403 KH |
2749 | len = CHAR_STRING (XFASTINT (fromchar), fromstr); |
2750 | if (CHAR_STRING (XFASTINT (tochar), tostr) != len) | |
fdd6025e | 2751 | error ("Characters in `subst-char-in-region' have different byte-lengths"); |
aa801467 KH |
2752 | if (!ASCII_BYTE_P (*tostr)) |
2753 | { | |
2754 | /* If *TOSTR is in the range 0x80..0x9F and TOCHAR is not a | |
2755 | complete multibyte character, it may be combined with the | |
2756 | after bytes. If it is in the range 0xA0..0xFF, it may be | |
2757 | combined with the before and after bytes. */ | |
2758 | if (!CHAR_HEAD_P (*tostr)) | |
2759 | maybe_byte_combining = COMBINING_BOTH; | |
2760 | else if (BYTES_BY_CHAR_HEAD (*tostr) > len) | |
2761 | maybe_byte_combining = COMBINING_AFTER; | |
2762 | } | |
fb8106e8 KH |
2763 | } |
2764 | else | |
2765 | { | |
2766 | len = 1; | |
d5c2c403 KH |
2767 | fromstr[0] = XFASTINT (fromchar); |
2768 | tostr[0] = XFASTINT (tochar); | |
fb8106e8 KH |
2769 | } |
2770 | ||
84246b95 KH |
2771 | pos = XINT (start); |
2772 | pos_byte = CHAR_TO_BYTE (pos); | |
ec1c14f6 RS |
2773 | stop = CHAR_TO_BYTE (XINT (end)); |
2774 | end_byte = stop; | |
35692fe0 | 2775 | |
d5a539cd RS |
2776 | /* If we don't want undo, turn off putting stuff on the list. |
2777 | That's faster than getting rid of things, | |
c8e76b47 RS |
2778 | and it prevents even the entry for a first change. |
2779 | Also inhibit locking the file. */ | |
0f2e2a3b | 2780 | if (!changed && !NILP (noundo)) |
d5a539cd RS |
2781 | { |
2782 | record_unwind_protect (subst_char_in_region_unwind, | |
2783 | current_buffer->undo_list); | |
2784 | current_buffer->undo_list = Qt; | |
c8e76b47 RS |
2785 | /* Don't do file-locking. */ |
2786 | record_unwind_protect (subst_char_in_region_unwind_1, | |
2787 | current_buffer->filename); | |
2788 | current_buffer->filename = Qnil; | |
d5a539cd RS |
2789 | } |
2790 | ||
84246b95 | 2791 | if (pos_byte < GPT_BYTE) |
ec1c14f6 | 2792 | stop = min (stop, GPT_BYTE); |
fb8106e8 | 2793 | while (1) |
35692fe0 | 2794 | { |
a3360ff9 KH |
2795 | int pos_byte_next = pos_byte; |
2796 | ||
84246b95 | 2797 | if (pos_byte >= stop) |
fb8106e8 | 2798 | { |
84246b95 | 2799 | if (pos_byte >= end_byte) break; |
ec1c14f6 | 2800 | stop = end_byte; |
fb8106e8 | 2801 | } |
84246b95 | 2802 | p = BYTE_POS_ADDR (pos_byte); |
7439e5b9 GM |
2803 | if (multibyte_p) |
2804 | INC_POS (pos_byte_next); | |
2805 | else | |
2806 | ++pos_byte_next; | |
a3360ff9 KH |
2807 | if (pos_byte_next - pos_byte == len |
2808 | && p[0] == fromstr[0] | |
fb8106e8 KH |
2809 | && (len == 1 |
2810 | || (p[1] == fromstr[1] | |
2811 | && (len == 2 || (p[2] == fromstr[2] | |
2812 | && (len == 3 || p[3] == fromstr[3])))))) | |
35692fe0 | 2813 | { |
0f2e2a3b SM |
2814 | if (changed < 0) |
2815 | /* We've already seen this and run the before-change-function; | |
2816 | this time we only need to record the actual position. */ | |
2817 | changed = pos; | |
2818 | else if (!changed) | |
60b96ee7 | 2819 | { |
0f2e2a3b | 2820 | changed = -1; |
3e145152 | 2821 | modify_region (current_buffer, pos, XINT (end), 0); |
7653d030 RS |
2822 | |
2823 | if (! NILP (noundo)) | |
2824 | { | |
1e158d25 RS |
2825 | if (MODIFF - 1 == SAVE_MODIFF) |
2826 | SAVE_MODIFF++; | |
7653d030 RS |
2827 | if (MODIFF - 1 == current_buffer->auto_save_modified) |
2828 | current_buffer->auto_save_modified++; | |
2829 | } | |
0f2e2a3b SM |
2830 | |
2831 | /* The before-change-function may have moved the gap | |
2832 | or even modified the buffer so we should start over. */ | |
2833 | goto restart; | |
60b96ee7 RS |
2834 | } |
2835 | ||
0c1e3b85 | 2836 | /* Take care of the case where the new character |
34a7a267 | 2837 | combines with neighboring bytes. */ |
a3360ff9 | 2838 | if (maybe_byte_combining |
aa801467 KH |
2839 | && (maybe_byte_combining == COMBINING_AFTER |
2840 | ? (pos_byte_next < Z_BYTE | |
2841 | && ! CHAR_HEAD_P (FETCH_BYTE (pos_byte_next))) | |
2842 | : ((pos_byte_next < Z_BYTE | |
2843 | && ! CHAR_HEAD_P (FETCH_BYTE (pos_byte_next))) | |
2844 | || (pos_byte > BEG_BYTE | |
2845 | && ! ASCII_BYTE_P (FETCH_BYTE (pos_byte - 1)))))) | |
0c1e3b85 RS |
2846 | { |
2847 | Lisp_Object tem, string; | |
2848 | ||
2849 | struct gcpro gcpro1; | |
2850 | ||
2851 | tem = current_buffer->undo_list; | |
2852 | GCPRO1 (tem); | |
2853 | ||
aa801467 KH |
2854 | /* Make a multibyte string containing this single character. */ |
2855 | string = make_multibyte_string (tostr, 1, len); | |
0c1e3b85 RS |
2856 | /* replace_range is less efficient, because it moves the gap, |
2857 | but it handles combining correctly. */ | |
2858 | replace_range (pos, pos + 1, string, | |
9869520f | 2859 | 0, 0, 1); |
a3360ff9 KH |
2860 | pos_byte_next = CHAR_TO_BYTE (pos); |
2861 | if (pos_byte_next > pos_byte) | |
2862 | /* Before combining happened. We should not increment | |
3f5409d3 KH |
2863 | POS. So, to cancel the later increment of POS, |
2864 | decrease it now. */ | |
2865 | pos--; | |
a3360ff9 | 2866 | else |
3f5409d3 | 2867 | INC_POS (pos_byte_next); |
34a7a267 | 2868 | |
0c1e3b85 RS |
2869 | if (! NILP (noundo)) |
2870 | current_buffer->undo_list = tem; | |
2871 | ||
2872 | UNGCPRO; | |
2873 | } | |
2874 | else | |
2875 | { | |
2876 | if (NILP (noundo)) | |
2877 | record_change (pos, 1); | |
2878 | for (i = 0; i < len; i++) *p++ = tostr[i]; | |
2879 | } | |
d5c2c403 | 2880 | last_changed = pos + 1; |
35692fe0 | 2881 | } |
3f5409d3 KH |
2882 | pos_byte = pos_byte_next; |
2883 | pos++; | |
35692fe0 JB |
2884 | } |
2885 | ||
0f2e2a3b | 2886 | if (changed > 0) |
d5c2c403 KH |
2887 | { |
2888 | signal_after_change (changed, | |
2889 | last_changed - changed, last_changed - changed); | |
2890 | update_compositions (changed, last_changed, CHECK_ALL); | |
2891 | } | |
60b96ee7 | 2892 | |
d5a539cd | 2893 | unbind_to (count, Qnil); |
35692fe0 JB |
2894 | return Qnil; |
2895 | } | |
2896 | ||
365d1467 KH |
2897 | DEFUN ("translate-region-internal", Ftranslate_region_internal, |
2898 | Stranslate_region_internal, 3, 3, 0, | |
2899 | doc: /* Internal use only. | |
2900 | From START to END, translate characters according to TABLE. | |
a1f17501 PJ |
2901 | TABLE is a string; the Nth character in it is the mapping |
2902 | for the character with code N. | |
7ee72033 MB |
2903 | It returns the number of characters changed. */) |
2904 | (start, end, table) | |
35692fe0 JB |
2905 | Lisp_Object start; |
2906 | Lisp_Object end; | |
2907 | register Lisp_Object table; | |
2908 | { | |
35692fe0 | 2909 | register unsigned char *tt; /* Trans table. */ |
35692fe0 JB |
2910 | register int nc; /* New character. */ |
2911 | int cnt; /* Number of changes made. */ | |
35692fe0 | 2912 | int size; /* Size of translate table. */ |
365d1467 | 2913 | int pos, pos_byte, end_pos; |
e8cce5af | 2914 | int multibyte = !NILP (current_buffer->enable_multibyte_characters); |
10475277 | 2915 | int string_multibyte; |
35692fe0 JB |
2916 | |
2917 | validate_region (&start, &end); | |
365d1467 KH |
2918 | if (CHAR_TABLE_P (table)) |
2919 | { | |
2920 | size = MAX_CHAR; | |
2921 | tt = NULL; | |
2922 | } | |
2923 | else | |
2924 | { | |
2925 | CHECK_STRING (table); | |
10475277 | 2926 | |
365d1467 KH |
2927 | if (! multibyte && (SCHARS (table) < SBYTES (table))) |
2928 | table = string_make_unibyte (table); | |
2929 | string_multibyte = SCHARS (table) < SBYTES (table); | |
2930 | size = SCHARS (table); | |
2931 | tt = SDATA (table); | |
2932 | } | |
35692fe0 | 2933 | |
1f24f4fd | 2934 | pos = XINT (start); |
c99ffedf | 2935 | pos_byte = CHAR_TO_BYTE (pos); |
e65837df | 2936 | end_pos = XINT (end); |
3e145152 | 2937 | modify_region (current_buffer, pos, XINT (end), 0); |
35692fe0 JB |
2938 | |
2939 | cnt = 0; | |
365d1467 | 2940 | for (; pos < end_pos; ) |
35692fe0 | 2941 | { |
ec1c14f6 | 2942 | register unsigned char *p = BYTE_POS_ADDR (pos_byte); |
365d1467 | 2943 | unsigned char *str, buf[MAX_MULTIBYTE_LENGTH]; |
10475277 | 2944 | int len, str_len; |
1f24f4fd | 2945 | int oc; |
ec1c14f6 | 2946 | |
e8cce5af | 2947 | if (multibyte) |
c99ffedf | 2948 | oc = STRING_CHAR_AND_LENGTH (p, MAX_MULTIBYTE_LENGTH, len); |
e8cce5af KH |
2949 | else |
2950 | oc = *p, len = 1; | |
10475277 | 2951 | if (oc < size) |
35692fe0 | 2952 | { |
365d1467 | 2953 | if (tt) |
10475277 | 2954 | { |
fa056b08 KS |
2955 | /* Reload as signal_after_change in last iteration may GC. */ |
2956 | tt = SDATA (table); | |
365d1467 KH |
2957 | if (string_multibyte) |
2958 | { | |
2959 | str = tt + string_char_to_byte (table, oc); | |
2960 | nc = STRING_CHAR_AND_LENGTH (str, MAX_MULTIBYTE_LENGTH, | |
2961 | str_len); | |
2962 | } | |
2963 | else | |
2964 | { | |
2965 | nc = tt[oc]; | |
2966 | if (! ASCII_BYTE_P (nc) && multibyte) | |
2967 | { | |
2968 | str_len = CHAR_STRING (nc, buf); | |
2969 | str = buf; | |
2970 | } | |
2971 | else | |
2972 | { | |
2973 | str_len = 1; | |
2974 | str = tt + oc; | |
2975 | } | |
2976 | } | |
10475277 KH |
2977 | } |
2978 | else | |
2979 | { | |
365d1467 KH |
2980 | Lisp_Object val; |
2981 | int c; | |
2982 | ||
2983 | nc = oc; | |
2984 | val = CHAR_TABLE_REF (table, oc); | |
2985 | if (INTEGERP (val) | |
2986 | && (c = XINT (val), CHAR_VALID_P (c, 0))) | |
2987 | { | |
2988 | nc = c; | |
2989 | str_len = CHAR_STRING (nc, buf); | |
2990 | str = buf; | |
2991 | } | |
10475277 | 2992 | } |
365d1467 | 2993 | |
35692fe0 JB |
2994 | if (nc != oc) |
2995 | { | |
c99ffedf | 2996 | if (len != str_len) |
0c1e3b85 RS |
2997 | { |
2998 | Lisp_Object string; | |
2999 | ||
0c1e3b85 | 3000 | /* This is less efficient, because it moves the gap, |
c99ffedf KH |
3001 | but it should multibyte characters correctly. */ |
3002 | string = make_multibyte_string (str, 1, str_len); | |
3003 | replace_range (pos, pos + 1, string, 1, 0, 1); | |
3004 | len = str_len; | |
0c1e3b85 RS |
3005 | } |
3006 | else | |
3007 | { | |
3008 | record_change (pos, 1); | |
10475277 KH |
3009 | while (str_len-- > 0) |
3010 | *p++ = *str++; | |
0c1e3b85 | 3011 | signal_after_change (pos, 1, 1); |
d5c2c403 | 3012 | update_compositions (pos, pos + 1, CHECK_BORDER); |
0c1e3b85 | 3013 | } |
35692fe0 JB |
3014 | ++cnt; |
3015 | } | |
3016 | } | |
c99ffedf | 3017 | pos_byte += len; |
3f5409d3 | 3018 | pos++; |
35692fe0 JB |
3019 | } |
3020 | ||
ec1c14f6 | 3021 | return make_number (cnt); |
35692fe0 JB |
3022 | } |
3023 | ||
3024 | DEFUN ("delete-region", Fdelete_region, Sdelete_region, 2, 2, "r", | |
7ee72033 | 3025 | doc: /* Delete the text between point and mark. |
412f1fab | 3026 | |
a1f17501 | 3027 | When called from a program, expects two arguments, |
7ee72033 MB |
3028 | positions (integers or markers) specifying the stretch to be deleted. */) |
3029 | (start, end) | |
2591ec64 | 3030 | Lisp_Object start, end; |
35692fe0 | 3031 | { |
2591ec64 EN |
3032 | validate_region (&start, &end); |
3033 | del_range (XINT (start), XINT (end)); | |
35692fe0 JB |
3034 | return Qnil; |
3035 | } | |
7dae4502 SM |
3036 | |
3037 | DEFUN ("delete-and-extract-region", Fdelete_and_extract_region, | |
3038 | Sdelete_and_extract_region, 2, 2, 0, | |
7ee72033 MB |
3039 | doc: /* Delete the text between START and END and return it. */) |
3040 | (start, end) | |
7dae4502 SM |
3041 | Lisp_Object start, end; |
3042 | { | |
3043 | validate_region (&start, &end); | |
8550b998 RS |
3044 | if (XINT (start) == XINT (end)) |
3045 | return build_string (""); | |
7dae4502 SM |
3046 | return del_range_1 (XINT (start), XINT (end), 1, 1); |
3047 | } | |
35692fe0 JB |
3048 | \f |
3049 | DEFUN ("widen", Fwiden, Swiden, 0, 0, "", | |
7ee72033 MB |
3050 | doc: /* Remove restrictions (narrowing) from current buffer. |
3051 | This allows the buffer's full text to be seen and edited. */) | |
3052 | () | |
35692fe0 | 3053 | { |
2cad2e34 RS |
3054 | if (BEG != BEGV || Z != ZV) |
3055 | current_buffer->clip_changed = 1; | |
35692fe0 | 3056 | BEGV = BEG; |
ec1c14f6 RS |
3057 | BEGV_BYTE = BEG_BYTE; |
3058 | SET_BUF_ZV_BOTH (current_buffer, Z, Z_BYTE); | |
52b14ac0 JB |
3059 | /* Changing the buffer bounds invalidates any recorded current column. */ |
3060 | invalidate_current_column (); | |
35692fe0 JB |
3061 | return Qnil; |
3062 | } | |
3063 | ||
3064 | DEFUN ("narrow-to-region", Fnarrow_to_region, Snarrow_to_region, 2, 2, "r", | |
7ee72033 | 3065 | doc: /* Restrict editing in this buffer to the current region. |
a1f17501 PJ |
3066 | The rest of the text becomes temporarily invisible and untouchable |
3067 | but is not deleted; if you save the buffer in a file, the invisible | |
3068 | text is included in the file. \\[widen] makes all visible again. | |
3069 | See also `save-restriction'. | |
3070 | ||
3071 | When calling from a program, pass two arguments; positions (integers | |
7ee72033 MB |
3072 | or markers) bounding the text that should remain visible. */) |
3073 | (start, end) | |
2591ec64 | 3074 | register Lisp_Object start, end; |
35692fe0 | 3075 | { |
b7826503 PJ |
3076 | CHECK_NUMBER_COERCE_MARKER (start); |
3077 | CHECK_NUMBER_COERCE_MARKER (end); | |
35692fe0 | 3078 | |
2591ec64 | 3079 | if (XINT (start) > XINT (end)) |
35692fe0 | 3080 | { |
b5a6948e | 3081 | Lisp_Object tem; |
2591ec64 | 3082 | tem = start; start = end; end = tem; |
35692fe0 JB |
3083 | } |
3084 | ||
2591ec64 EN |
3085 | if (!(BEG <= XINT (start) && XINT (start) <= XINT (end) && XINT (end) <= Z)) |
3086 | args_out_of_range (start, end); | |
35692fe0 | 3087 | |
2cad2e34 RS |
3088 | if (BEGV != XFASTINT (start) || ZV != XFASTINT (end)) |
3089 | current_buffer->clip_changed = 1; | |
3090 | ||
ec1c14f6 | 3091 | SET_BUF_BEGV (current_buffer, XFASTINT (start)); |
2591ec64 | 3092 | SET_BUF_ZV (current_buffer, XFASTINT (end)); |
6ec8bbd2 | 3093 | if (PT < XFASTINT (start)) |
2591ec64 | 3094 | SET_PT (XFASTINT (start)); |
6ec8bbd2 | 3095 | if (PT > XFASTINT (end)) |
2591ec64 | 3096 | SET_PT (XFASTINT (end)); |
52b14ac0 JB |
3097 | /* Changing the buffer bounds invalidates any recorded current column. */ |
3098 | invalidate_current_column (); | |
35692fe0 JB |
3099 | return Qnil; |
3100 | } | |
3101 | ||
3102 | Lisp_Object | |
3103 | save_restriction_save () | |
3104 | { | |
d6abb4c7 MB |
3105 | if (BEGV == BEG && ZV == Z) |
3106 | /* The common case that the buffer isn't narrowed. | |
3107 | We return just the buffer object, which save_restriction_restore | |
3108 | recognizes as meaning `no restriction'. */ | |
3109 | return Fcurrent_buffer (); | |
3110 | else | |
3111 | /* We have to save a restriction, so return a pair of markers, one | |
3112 | for the beginning and one for the end. */ | |
3113 | { | |
3114 | Lisp_Object beg, end; | |
3115 | ||
3116 | beg = buildmark (BEGV, BEGV_BYTE); | |
3117 | end = buildmark (ZV, ZV_BYTE); | |
35692fe0 | 3118 | |
d6abb4c7 MB |
3119 | /* END must move forward if text is inserted at its exact location. */ |
3120 | XMARKER(end)->insertion_type = 1; | |
3121 | ||
3122 | return Fcons (beg, end); | |
3123 | } | |
35692fe0 JB |
3124 | } |
3125 | ||
3126 | Lisp_Object | |
3127 | save_restriction_restore (data) | |
3128 | Lisp_Object data; | |
3129 | { | |
d6abb4c7 MB |
3130 | if (CONSP (data)) |
3131 | /* A pair of marks bounding a saved restriction. */ | |
35692fe0 | 3132 | { |
d6abb4c7 MB |
3133 | struct Lisp_Marker *beg = XMARKER (XCAR (data)); |
3134 | struct Lisp_Marker *end = XMARKER (XCDR (data)); | |
3135 | struct buffer *buf = beg->buffer; /* END should have the same buffer. */ | |
2cad2e34 | 3136 | |
63884563 RS |
3137 | if (buf /* Verify marker still points to a buffer. */ |
3138 | && (beg->charpos != BUF_BEGV (buf) || end->charpos != BUF_ZV (buf))) | |
d6abb4c7 MB |
3139 | /* The restriction has changed from the saved one, so restore |
3140 | the saved restriction. */ | |
3141 | { | |
3142 | int pt = BUF_PT (buf); | |
3143 | ||
3144 | SET_BUF_BEGV_BOTH (buf, beg->charpos, beg->bytepos); | |
3145 | SET_BUF_ZV_BOTH (buf, end->charpos, end->bytepos); | |
3146 | ||
3147 | if (pt < beg->charpos || pt > end->charpos) | |
3148 | /* The point is outside the new visible range, move it inside. */ | |
3149 | SET_BUF_PT_BOTH (buf, | |
3150 | clip_to_bounds (beg->charpos, pt, end->charpos), | |
63884563 | 3151 | clip_to_bounds (beg->bytepos, BUF_PT_BYTE (buf), |
d6abb4c7 | 3152 | end->bytepos)); |
177c0ea7 | 3153 | |
d6abb4c7 MB |
3154 | buf->clip_changed = 1; /* Remember that the narrowing changed. */ |
3155 | } | |
3156 | } | |
3157 | else | |
3158 | /* A buffer, which means that there was no old restriction. */ | |
3159 | { | |
3160 | struct buffer *buf = XBUFFER (data); | |
2cad2e34 | 3161 | |
63884563 RS |
3162 | if (buf /* Verify marker still points to a buffer. */ |
3163 | && (BUF_BEGV (buf) != BUF_BEG (buf) || BUF_ZV (buf) != BUF_Z (buf))) | |
d6abb4c7 MB |
3164 | /* The buffer has been narrowed, get rid of the narrowing. */ |
3165 | { | |
63884563 RS |
3166 | SET_BUF_BEGV_BOTH (buf, BUF_BEG (buf), BUF_BEG_BYTE (buf)); |
3167 | SET_BUF_ZV_BOTH (buf, BUF_Z (buf), BUF_Z_BYTE (buf)); | |
35692fe0 | 3168 | |
d6abb4c7 MB |
3169 | buf->clip_changed = 1; /* Remember that the narrowing changed. */ |
3170 | } | |
3171 | } | |
35692fe0 JB |
3172 | |
3173 | return Qnil; | |
3174 | } | |
3175 | ||
3176 | DEFUN ("save-restriction", Fsave_restriction, Ssave_restriction, 0, UNEVALLED, 0, | |
7ee72033 | 3177 | doc: /* Execute BODY, saving and restoring current buffer's restrictions. |
a1f17501 | 3178 | The buffer's restrictions make parts of the beginning and end invisible. |
9671c13a | 3179 | \(They are set up with `narrow-to-region' and eliminated with `widen'.) |
a1f17501 PJ |
3180 | This special form, `save-restriction', saves the current buffer's restrictions |
3181 | when it is entered, and restores them when it is exited. | |
3182 | So any `narrow-to-region' within BODY lasts only until the end of the form. | |
3183 | The old restrictions settings are restored | |
3184 | even in case of abnormal exit (throw or error). | |
3185 | ||
3186 | The value returned is the value of the last form in BODY. | |
3187 | ||
3188 | Note: if you are using both `save-excursion' and `save-restriction', | |
3189 | use `save-excursion' outermost: | |
33c2d29f MB |
3190 | (save-excursion (save-restriction ...)) |
3191 | ||
3192 | usage: (save-restriction &rest BODY) */) | |
7ee72033 | 3193 | (body) |
35692fe0 JB |
3194 | Lisp_Object body; |
3195 | { | |
3196 | register Lisp_Object val; | |
aed13378 | 3197 | int count = SPECPDL_INDEX (); |
35692fe0 JB |
3198 | |
3199 | record_unwind_protect (save_restriction_restore, save_restriction_save ()); | |
3200 | val = Fprogn (body); | |
3201 | return unbind_to (count, val); | |
3202 | } | |
3203 | \f | |
0ae83348 | 3204 | /* Buffer for the most recent text displayed by Fmessage_box. */ |
671fbc4d KH |
3205 | static char *message_text; |
3206 | ||
3207 | /* Allocated length of that buffer. */ | |
3208 | static int message_length; | |
3209 | ||
35692fe0 | 3210 | DEFUN ("message", Fmessage, Smessage, 1, MANY, 0, |
db18da59 | 3211 | doc: /* Display a message at the bottom of the screen. |
281c1721 RS |
3212 | The message also goes into the `*Messages*' buffer. |
3213 | \(In keyboard macros, that's all it does.) | |
db18da59 | 3214 | Return the message. |
281c1721 | 3215 | |
a1f17501 PJ |
3216 | The first argument is a format control string, and the rest are data |
3217 | to be formatted under control of the string. See `format' for details. | |
3218 | ||
7bd5bcfb KS |
3219 | Note: Use (message "%s" VALUE) to print the value of expressions and |
3220 | variables to avoid accidentally interpreting `%' as format specifiers. | |
3221 | ||
fa056b08 KS |
3222 | If the first argument is nil or the empty string, the function clears |
3223 | any existing message; this lets the minibuffer contents show. See | |
3224 | also `current-message'. | |
4bfbe194 | 3225 | |
867b9600 | 3226 | usage: (message FORMAT-STRING &rest ARGS) */) |
7ee72033 | 3227 | (nargs, args) |
35692fe0 JB |
3228 | int nargs; |
3229 | Lisp_Object *args; | |
3230 | { | |
6076e561 RS |
3231 | if (NILP (args[0]) |
3232 | || (STRINGP (args[0]) | |
3233 | && SBYTES (args[0]) == 0)) | |
f0250249 JB |
3234 | { |
3235 | message (0); | |
674a954a | 3236 | return args[0]; |
f0250249 | 3237 | } |
ccdac5be JB |
3238 | else |
3239 | { | |
3240 | register Lisp_Object val; | |
304f1f12 | 3241 | val = Fformat (nargs, args); |
d5db4077 | 3242 | message3 (val, SBYTES (val), STRING_MULTIBYTE (val)); |
ccdac5be JB |
3243 | return val; |
3244 | } | |
35692fe0 JB |
3245 | } |
3246 | ||
cacc3e2c | 3247 | DEFUN ("message-box", Fmessage_box, Smessage_box, 1, MANY, 0, |
7ee72033 | 3248 | doc: /* Display a message, in a dialog box if possible. |
a1f17501 PJ |
3249 | If a dialog box is not available, use the echo area. |
3250 | The first argument is a format control string, and the rest are data | |
3251 | to be formatted under control of the string. See `format' for details. | |
3252 | ||
fa056b08 KS |
3253 | If the first argument is nil or the empty string, clear any existing |
3254 | message; let the minibuffer contents show. | |
4bfbe194 | 3255 | |
867b9600 | 3256 | usage: (message-box FORMAT-STRING &rest ARGS) */) |
7ee72033 | 3257 | (nargs, args) |
cacc3e2c RS |
3258 | int nargs; |
3259 | Lisp_Object *args; | |
3260 | { | |
3261 | if (NILP (args[0])) | |
3262 | { | |
3263 | message (0); | |
3264 | return Qnil; | |
3265 | } | |
3266 | else | |
3267 | { | |
3268 | register Lisp_Object val; | |
3269 | val = Fformat (nargs, args); | |
f8250f01 | 3270 | #ifdef HAVE_MENUS |
0ae83348 EZ |
3271 | /* The MS-DOS frames support popup menus even though they are |
3272 | not FRAME_WINDOW_P. */ | |
3273 | if (FRAME_WINDOW_P (XFRAME (selected_frame)) | |
3274 | || FRAME_MSDOS_P (XFRAME (selected_frame))) | |
cacc3e2c RS |
3275 | { |
3276 | Lisp_Object pane, menu, obj; | |
3277 | struct gcpro gcpro1; | |
3278 | pane = Fcons (Fcons (build_string ("OK"), Qt), Qnil); | |
3279 | GCPRO1 (pane); | |
3280 | menu = Fcons (val, pane); | |
87944384 | 3281 | obj = Fx_popup_dialog (Qt, menu, Qt); |
cacc3e2c RS |
3282 | UNGCPRO; |
3283 | return val; | |
3284 | } | |
0ae83348 | 3285 | #endif /* HAVE_MENUS */ |
cacc3e2c RS |
3286 | /* Copy the data so that it won't move when we GC. */ |
3287 | if (! message_text) | |
3288 | { | |
3289 | message_text = (char *)xmalloc (80); | |
3290 | message_length = 80; | |
3291 | } | |
d5db4077 | 3292 | if (SBYTES (val) > message_length) |
cacc3e2c | 3293 | { |
d5db4077 | 3294 | message_length = SBYTES (val); |
cacc3e2c RS |
3295 | message_text = (char *)xrealloc (message_text, message_length); |
3296 | } | |
d5db4077 KR |
3297 | bcopy (SDATA (val), message_text, SBYTES (val)); |
3298 | message2 (message_text, SBYTES (val), | |
d13a8480 | 3299 | STRING_MULTIBYTE (val)); |
cacc3e2c | 3300 | return val; |
cacc3e2c RS |
3301 | } |
3302 | } | |
f8250f01 | 3303 | #ifdef HAVE_MENUS |
cacc3e2c RS |
3304 | extern Lisp_Object last_nonmenu_event; |
3305 | #endif | |
f8250f01 | 3306 | |
cacc3e2c | 3307 | DEFUN ("message-or-box", Fmessage_or_box, Smessage_or_box, 1, MANY, 0, |
7ee72033 | 3308 | doc: /* Display a message in a dialog box or in the echo area. |
a1f17501 PJ |
3309 | If this command was invoked with the mouse, use a dialog box if |
3310 | `use-dialog-box' is non-nil. | |
3311 | Otherwise, use the echo area. | |
3312 | The first argument is a format control string, and the rest are data | |
3313 | to be formatted under control of the string. See `format' for details. | |
3314 | ||
fa056b08 KS |
3315 | If the first argument is nil or the empty string, clear any existing |
3316 | message; let the minibuffer contents show. | |
4bfbe194 | 3317 | |
867b9600 | 3318 | usage: (message-or-box FORMAT-STRING &rest ARGS) */) |
7ee72033 | 3319 | (nargs, args) |
cacc3e2c RS |
3320 | int nargs; |
3321 | Lisp_Object *args; | |
3322 | { | |
f8250f01 | 3323 | #ifdef HAVE_MENUS |
5920df33 | 3324 | if ((NILP (last_nonmenu_event) || CONSP (last_nonmenu_event)) |
c01fbf95 | 3325 | && use_dialog_box) |
0a56ee6b | 3326 | return Fmessage_box (nargs, args); |
cacc3e2c RS |
3327 | #endif |
3328 | return Fmessage (nargs, args); | |
3329 | } | |
3330 | ||
b14dda8a | 3331 | DEFUN ("current-message", Fcurrent_message, Scurrent_message, 0, 0, 0, |
7ee72033 MB |
3332 | doc: /* Return the string currently displayed in the echo area, or nil if none. */) |
3333 | () | |
b14dda8a | 3334 | { |
0634a78e | 3335 | return current_message (); |
b14dda8a RS |
3336 | } |
3337 | ||
2d9811c4 | 3338 | |
d2936d21 | 3339 | DEFUN ("propertize", Fpropertize, Spropertize, 1, MANY, 0, |
7ee72033 | 3340 | doc: /* Return a copy of STRING with text properties added. |
a1f17501 PJ |
3341 | First argument is the string to copy. |
3342 | Remaining arguments form a sequence of PROPERTY VALUE pairs for text | |
4bfbe194 MB |
3343 | properties to add to the result. |
3344 | usage: (propertize STRING &rest PROPERTIES) */) | |
7ee72033 | 3345 | (nargs, args) |
2d9811c4 GM |
3346 | int nargs; |
3347 | Lisp_Object *args; | |
3348 | { | |
3349 | Lisp_Object properties, string; | |
3350 | struct gcpro gcpro1, gcpro2; | |
3351 | int i; | |
3352 | ||
3353 | /* Number of args must be odd. */ | |
d2936d21 | 3354 | if ((nargs & 1) == 0 || nargs < 1) |
2d9811c4 GM |
3355 | error ("Wrong number of arguments"); |
3356 | ||
3357 | properties = string = Qnil; | |
3358 | GCPRO2 (properties, string); | |
34a7a267 | 3359 | |
2d9811c4 | 3360 | /* First argument must be a string. */ |
b7826503 | 3361 | CHECK_STRING (args[0]); |
2d9811c4 GM |
3362 | string = Fcopy_sequence (args[0]); |
3363 | ||
3364 | for (i = 1; i < nargs; i += 2) | |
9b7a2369 | 3365 | properties = Fcons (args[i], Fcons (args[i + 1], properties)); |
2d9811c4 GM |
3366 | |
3367 | Fadd_text_properties (make_number (0), | |
d5db4077 | 3368 | make_number (SCHARS (string)), |
2d9811c4 GM |
3369 | properties, string); |
3370 | RETURN_UNGCPRO (string); | |
3371 | } | |
3372 | ||
3373 | ||
1f24f4fd RS |
3374 | /* Number of bytes that STRING will occupy when put into the result. |
3375 | MULTIBYTE is nonzero if the result should be multibyte. */ | |
3376 | ||
3377 | #define CONVERTED_BYTE_SIZE(MULTIBYTE, STRING) \ | |
3378 | (((MULTIBYTE) && ! STRING_MULTIBYTE (STRING)) \ | |
d5db4077 KR |
3379 | ? count_size_as_multibyte (SDATA (STRING), SBYTES (STRING)) \ |
3380 | : SBYTES (STRING)) | |
1f24f4fd | 3381 | |
35692fe0 | 3382 | DEFUN ("format", Fformat, Sformat, 1, MANY, 0, |
867b9600 JL |
3383 | doc: /* Format a string out of a format-string and arguments. |
3384 | The first argument is a format control string. | |
a1f17501 PJ |
3385 | The other arguments are substituted into it to make the result, a string. |
3386 | It may contain %-sequences meaning to substitute the next argument. | |
3387 | %s means print a string argument. Actually, prints any object, with `princ'. | |
3388 | %d means print as number in decimal (%o octal, %x hex). | |
3389 | %X is like %x, but uses upper case. | |
3390 | %e means print a number in exponential notation. | |
3391 | %f means print a number in decimal-point notation. | |
3392 | %g means print a number in exponential notation | |
3393 | or decimal-point notation, whichever uses fewer characters. | |
3394 | %c means print a number as a single character. | |
3395 | %S means print any object as an s-expression (using `prin1'). | |
3396 | The argument used for %d, %o, %x, %e, %f, %g or %c must be a number. | |
4bfbe194 MB |
3397 | Use %% to put a single % into the output. |
3398 | ||
728345f8 JY |
3399 | The basic structure of a %-sequence is |
3400 | % <flags> <width> <precision> character | |
cb06e570 | 3401 | where flags is [-+ #0]+, width is [0-9]+, and precision is .[0-9]+ |
728345f8 | 3402 | |
4bfbe194 | 3403 | usage: (format STRING &rest OBJECTS) */) |
7ee72033 | 3404 | (nargs, args) |
35692fe0 JB |
3405 | int nargs; |
3406 | register Lisp_Object *args; | |
3407 | { | |
3408 | register int n; /* The number of the next arg to substitute */ | |
e781c49e | 3409 | register int total; /* An estimate of the final length */ |
1f24f4fd | 3410 | char *buf, *p; |
d147ee84 | 3411 | register unsigned char *format, *end, *format_start; |
2ea0266e | 3412 | int nchars; |
1f24f4fd RS |
3413 | /* Nonzero if the output should be a multibyte string, |
3414 | which is true if any of the inputs is one. */ | |
3415 | int multibyte = 0; | |
8f2917e4 KH |
3416 | /* When we make a multibyte string, we must pay attention to the |
3417 | byte combining problem, i.e., a byte may be combined with a | |
3418 | multibyte charcter of the previous string. This flag tells if we | |
3419 | must consider such a situation or not. */ | |
3420 | int maybe_combine_byte; | |
1f24f4fd | 3421 | unsigned char *this_format; |
ac42d7b9 KG |
3422 | /* Precision for each spec, or -1, a flag value meaning no precision |
3423 | was given in that spec. Element 0, corresonding to the format | |
3424 | string itself, will not be used. Element NARGS, corresponding to | |
3425 | no argument, *will* be assigned to in the case that a `%' and `.' | |
3426 | occur after the final format specifier. */ | |
d68de522 | 3427 | int *precision = (int *) (alloca((nargs + 1) * sizeof (int))); |
e781c49e | 3428 | int longest_format; |
8d6179dc | 3429 | Lisp_Object val; |
d147ee84 | 3430 | int arg_intervals = 0; |
7e2c051b | 3431 | USE_SAFE_ALLOCA; |
d147ee84 RS |
3432 | |
3433 | /* discarded[I] is 1 if byte I of the format | |
3434 | string was not copied into the output. | |
3435 | It is 2 if byte I was not the first byte of its character. */ | |
e65837df | 3436 | char *discarded = 0; |
d147ee84 RS |
3437 | |
3438 | /* Each element records, for one argument, | |
3439 | the start and end bytepos in the output string, | |
3440 | and whether the argument is a string with intervals. | |
3441 | info[0] is unused. Unused elements have -1 for start. */ | |
5e6d5493 GM |
3442 | struct info |
3443 | { | |
d147ee84 | 3444 | int start, end, intervals; |
5e6d5493 | 3445 | } *info = 0; |
1f24f4fd | 3446 | |
35692fe0 JB |
3447 | /* It should not be necessary to GCPRO ARGS, because |
3448 | the caller in the interpreter should take care of that. */ | |
3449 | ||
e781c49e RS |
3450 | /* Try to determine whether the result should be multibyte. |
3451 | This is not always right; sometimes the result needs to be multibyte | |
3452 | because of an object that we will pass through prin1, | |
3453 | and in that case, we won't know it here. */ | |
d147ee84 RS |
3454 | for (n = 0; n < nargs; n++) |
3455 | { | |
3456 | if (STRINGP (args[n]) && STRING_MULTIBYTE (args[n])) | |
3457 | multibyte = 1; | |
3458 | /* Piggyback on this loop to initialize precision[N]. */ | |
3459 | precision[n] = -1; | |
3460 | } | |
7c111482 | 3461 | precision[nargs] = -1; |
1f24f4fd | 3462 | |
b7826503 | 3463 | CHECK_STRING (args[0]); |
aa8b70ae KH |
3464 | /* We may have to change "%S" to "%s". */ |
3465 | args[0] = Fcopy_sequence (args[0]); | |
e781c49e | 3466 | |
67965a98 RS |
3467 | /* GC should never happen here, so abort if it does. */ |
3468 | abort_on_gc++; | |
3469 | ||
e781c49e | 3470 | /* If we start out planning a unibyte result, |
67965a98 RS |
3471 | then discover it has to be multibyte, we jump back to retry. |
3472 | That can only happen from the first large while loop below. */ | |
e781c49e RS |
3473 | retry: |
3474 | ||
d5db4077 | 3475 | format = SDATA (args[0]); |
d147ee84 | 3476 | format_start = format; |
d5db4077 | 3477 | end = format + SBYTES (args[0]); |
e781c49e | 3478 | longest_format = 0; |
1f24f4fd RS |
3479 | |
3480 | /* Make room in result for all the non-%-codes in the control string. */ | |
7e2c051b | 3481 | total = 5 + CONVERTED_BYTE_SIZE (multibyte, args[0]) + 1; |
1f24f4fd | 3482 | |
d68de522 | 3483 | /* Allocate the info and discarded tables. */ |
d147ee84 | 3484 | { |
7c111482 | 3485 | int nbytes = (nargs+1) * sizeof *info; |
d147ee84 | 3486 | int i; |
e65837df KS |
3487 | if (!info) |
3488 | info = (struct info *) alloca (nbytes); | |
d147ee84 | 3489 | bzero (info, nbytes); |
7c111482 | 3490 | for (i = 0; i <= nargs; i++) |
d147ee84 | 3491 | info[i].start = -1; |
e65837df KS |
3492 | if (!discarded) |
3493 | SAFE_ALLOCA (discarded, char *, SBYTES (args[0])); | |
d147ee84 RS |
3494 | bzero (discarded, SBYTES (args[0])); |
3495 | } | |
3496 | ||
1f24f4fd | 3497 | /* Add to TOTAL enough space to hold the converted arguments. */ |
35692fe0 JB |
3498 | |
3499 | n = 0; | |
3500 | while (format != end) | |
3501 | if (*format++ == '%') | |
3502 | { | |
a432bfe5 | 3503 | int thissize = 0; |
308dd672 | 3504 | int actual_width = 0; |
1f24f4fd | 3505 | unsigned char *this_format_start = format - 1; |
ac42d7b9 | 3506 | int field_width = 0; |
35692fe0 | 3507 | |
a432bfe5 | 3508 | /* General format specifications look like |
537dfb13 | 3509 | |
a432bfe5 GM |
3510 | '%' [flags] [field-width] [precision] format |
3511 | ||
3512 | where | |
3513 | ||
cb06e570 | 3514 | flags ::= [-+ #0]+ |
a432bfe5 GM |
3515 | field-width ::= [0-9]+ |
3516 | precision ::= '.' [0-9]* | |
3517 | ||
3518 | If a field-width is specified, it specifies to which width | |
3519 | the output should be padded with blanks, iff the output | |
3520 | string is shorter than field-width. | |
3521 | ||
ac42d7b9 | 3522 | If precision is specified, it specifies the number of |
a432bfe5 GM |
3523 | digits to print after the '.' for floats, or the max. |
3524 | number of chars to print from a string. */ | |
3525 | ||
913f73d4 RS |
3526 | while (format != end |
3527 | && (*format == '-' || *format == '0' || *format == '#' | |
cb06e570 | 3528 | || * format == ' ' || *format == '+')) |
a432bfe5 GM |
3529 | ++format; |
3530 | ||
3531 | if (*format >= '0' && *format <= '9') | |
3532 | { | |
3533 | for (field_width = 0; *format >= '0' && *format <= '9'; ++format) | |
3534 | field_width = 10 * field_width + *format - '0'; | |
3535 | } | |
3536 | ||
ac42d7b9 KG |
3537 | /* N is not incremented for another few lines below, so refer to |
3538 | element N+1 (which might be precision[NARGS]). */ | |
a432bfe5 GM |
3539 | if (*format == '.') |
3540 | { | |
3541 | ++format; | |
ac42d7b9 KG |
3542 | for (precision[n+1] = 0; *format >= '0' && *format <= '9'; ++format) |
3543 | precision[n+1] = 10 * precision[n+1] + *format - '0'; | |
a432bfe5 | 3544 | } |
35692fe0 | 3545 | |
1f24f4fd RS |
3546 | if (format - this_format_start + 1 > longest_format) |
3547 | longest_format = format - this_format_start + 1; | |
3548 | ||
bf6ab66c KH |
3549 | if (format == end) |
3550 | error ("Format string ends in middle of format specifier"); | |
35692fe0 JB |
3551 | if (*format == '%') |
3552 | format++; | |
3553 | else if (++n >= nargs) | |
537dfb13 | 3554 | error ("Not enough arguments for format string"); |
35692fe0 JB |
3555 | else if (*format == 'S') |
3556 | { | |
3557 | /* For `S', prin1 the argument and then treat like a string. */ | |
3558 | register Lisp_Object tem; | |
3559 | tem = Fprin1_to_string (args[n], Qnil); | |
e781c49e RS |
3560 | if (STRING_MULTIBYTE (tem) && ! multibyte) |
3561 | { | |
3562 | multibyte = 1; | |
3563 | goto retry; | |
3564 | } | |
35692fe0 | 3565 | args[n] = tem; |
aa8b70ae KH |
3566 | /* If we restart the loop, we should not come here again |
3567 | because args[n] is now a string and calling | |
3568 | Fprin1_to_string on it produces superflous double | |
3569 | quotes. So, change "%S" to "%s" now. */ | |
3570 | *format = 's'; | |
35692fe0 JB |
3571 | goto string; |
3572 | } | |
ae683129 | 3573 | else if (SYMBOLP (args[n])) |
35692fe0 | 3574 | { |
1e5d9116 | 3575 | args[n] = SYMBOL_NAME (args[n]); |
7df74da6 RS |
3576 | if (STRING_MULTIBYTE (args[n]) && ! multibyte) |
3577 | { | |
3578 | multibyte = 1; | |
3579 | goto retry; | |
3580 | } | |
35692fe0 JB |
3581 | goto string; |
3582 | } | |
ae683129 | 3583 | else if (STRINGP (args[n])) |
35692fe0 JB |
3584 | { |
3585 | string: | |
b22e7ecc | 3586 | if (*format != 's' && *format != 'S') |
bf6ab66c | 3587 | error ("Format specifier doesn't match argument type"); |
ac42d7b9 KG |
3588 | /* In the case (PRECISION[N] > 0), THISSIZE may not need |
3589 | to be as large as is calculated here. Easy check for | |
3590 | the case PRECISION = 0. */ | |
3591 | thissize = precision[n] ? CONVERTED_BYTE_SIZE (multibyte, args[n]) : 0; | |
308dd672 | 3592 | actual_width = lisp_string_width (args[n], -1, NULL, NULL); |
35692fe0 JB |
3593 | } |
3594 | /* Would get MPV otherwise, since Lisp_Int's `point' to low memory. */ | |
ae683129 | 3595 | else if (INTEGERP (args[n]) && *format != 's') |
35692fe0 | 3596 | { |
eb8c3be9 | 3597 | /* The following loop assumes the Lisp type indicates |
35692fe0 JB |
3598 | the proper way to pass the argument. |
3599 | So make sure we have a flonum if the argument should | |
3600 | be a double. */ | |
3601 | if (*format == 'e' || *format == 'f' || *format == 'g') | |
3602 | args[n] = Ffloat (args[n]); | |
4224cb62 | 3603 | else |
4224cb62 | 3604 | if (*format != 'd' && *format != 'o' && *format != 'x' |
00d65216 | 3605 | && *format != 'i' && *format != 'X' && *format != 'c') |
4224cb62 KH |
3606 | error ("Invalid format operation %%%c", *format); |
3607 | ||
34a7a267 | 3608 | thissize = 30; |
063b53b1 | 3609 | if (*format == 'c') |
f49a2d74 | 3610 | { |
063b53b1 | 3611 | if (! SINGLE_BYTE_CHAR_P (XINT (args[n])) |
728345f8 | 3612 | /* Note: No one can remember why we have to treat |
231a3316 KH |
3613 | the character 0 as a multibyte character here. |
3614 | But, until it causes a real problem, let's | |
3615 | don't change it. */ | |
063b53b1 | 3616 | || XINT (args[n]) == 0) |
f49a2d74 | 3617 | { |
063b53b1 KH |
3618 | if (! multibyte) |
3619 | { | |
3620 | multibyte = 1; | |
3621 | goto retry; | |
3622 | } | |
3623 | args[n] = Fchar_to_string (args[n]); | |
3624 | thissize = SBYTES (args[n]); | |
3625 | } | |
3626 | else if (! ASCII_BYTE_P (XINT (args[n])) && multibyte) | |
3627 | { | |
3628 | args[n] | |
3629 | = Fchar_to_string (Funibyte_char_to_multibyte (args[n])); | |
3630 | thissize = SBYTES (args[n]); | |
f49a2d74 | 3631 | } |
f49a2d74 | 3632 | } |
35692fe0 | 3633 | } |
ae683129 | 3634 | else if (FLOATP (args[n]) && *format != 's') |
35692fe0 JB |
3635 | { |
3636 | if (! (*format == 'e' || *format == 'f' || *format == 'g')) | |
f98176d2 RS |
3637 | { |
3638 | if (*format != 'd' && *format != 'o' && *format != 'x' | |
3639 | && *format != 'i' && *format != 'X' && *format != 'c') | |
3640 | error ("Invalid format operation %%%c", *format); | |
c5c6b2cc SM |
3641 | /* This fails unnecessarily if args[n] is bigger than |
3642 | most-positive-fixnum but smaller than MAXINT. | |
3643 | These cases are important because we sometimes use floats | |
3644 | to represent such integer values (typically such values | |
3645 | come from UIDs or PIDs). */ | |
3646 | /* args[n] = Ftruncate (args[n], Qnil); */ | |
f98176d2 | 3647 | } |
a432bfe5 GM |
3648 | |
3649 | /* Note that we're using sprintf to print floats, | |
3650 | so we have to take into account what that function | |
3651 | prints. */ | |
b11f1d8a | 3652 | /* Filter out flag value of -1. */ |
6b381c3a RS |
3653 | thissize = (MAX_10_EXP + 100 |
3654 | + (precision[n] > 0 ? precision[n] : 0)); | |
35692fe0 JB |
3655 | } |
3656 | else | |
3657 | { | |
3658 | /* Anything but a string, convert to a string using princ. */ | |
3659 | register Lisp_Object tem; | |
3660 | tem = Fprin1_to_string (args[n], Qt); | |
3a9f36e6 | 3661 | if (STRING_MULTIBYTE (tem) && ! multibyte) |
e781c49e RS |
3662 | { |
3663 | multibyte = 1; | |
3664 | goto retry; | |
3665 | } | |
35692fe0 JB |
3666 | args[n] = tem; |
3667 | goto string; | |
3668 | } | |
34a7a267 | 3669 | |
308dd672 | 3670 | thissize += max (0, field_width - actual_width); |
1f24f4fd | 3671 | total += thissize + 4; |
35692fe0 JB |
3672 | } |
3673 | ||
67965a98 RS |
3674 | abort_on_gc--; |
3675 | ||
e781c49e RS |
3676 | /* Now we can no longer jump to retry. |
3677 | TOTAL and LONGEST_FORMAT are known for certain. */ | |
3678 | ||
1f24f4fd | 3679 | this_format = (unsigned char *) alloca (longest_format + 1); |
50aa2f90 | 3680 | |
1f24f4fd RS |
3681 | /* Allocate the space for the result. |
3682 | Note that TOTAL is an overestimate. */ | |
7e2c051b | 3683 | SAFE_ALLOCA (buf, char *, total); |
35692fe0 | 3684 | |
1f24f4fd RS |
3685 | p = buf; |
3686 | nchars = 0; | |
3687 | n = 0; | |
35692fe0 | 3688 | |
1f24f4fd | 3689 | /* Scan the format and store result in BUF. */ |
d5db4077 | 3690 | format = SDATA (args[0]); |
67965a98 RS |
3691 | format_start = format; |
3692 | end = format + SBYTES (args[0]); | |
8f2917e4 | 3693 | maybe_combine_byte = 0; |
1f24f4fd RS |
3694 | while (format != end) |
3695 | { | |
3696 | if (*format == '%') | |
3697 | { | |
3698 | int minlen; | |
25c9e7fb | 3699 | int negative = 0; |
1f24f4fd | 3700 | unsigned char *this_format_start = format; |
35692fe0 | 3701 | |
d147ee84 | 3702 | discarded[format - format_start] = 1; |
1f24f4fd | 3703 | format++; |
fb893977 | 3704 | |
cb06e570 | 3705 | while (index("-+0# ", *format)) |
728345f8 JY |
3706 | { |
3707 | if (*format == '-') | |
3708 | { | |
3709 | negative = 1; | |
3710 | } | |
3711 | discarded[format - format_start] = 1; | |
3712 | ++format; | |
3713 | } | |
3714 | ||
1f24f4fd | 3715 | minlen = atoi (format); |
728345f8 JY |
3716 | |
3717 | while ((*format >= '0' && *format <= '9') || *format == '.') | |
d147ee84 RS |
3718 | { |
3719 | discarded[format - format_start] = 1; | |
3720 | format++; | |
3721 | } | |
35692fe0 | 3722 | |
1f24f4fd RS |
3723 | if (*format++ == '%') |
3724 | { | |
3725 | *p++ = '%'; | |
3726 | nchars++; | |
3727 | continue; | |
3728 | } | |
3729 | ||
3730 | ++n; | |
3731 | ||
d147ee84 RS |
3732 | discarded[format - format_start - 1] = 1; |
3733 | info[n].start = nchars; | |
3734 | ||
1f24f4fd RS |
3735 | if (STRINGP (args[n])) |
3736 | { | |
ac42d7b9 KG |
3737 | /* handle case (precision[n] >= 0) */ |
3738 | ||
3739 | int width, padding; | |
3740 | int nbytes, start, end; | |
3741 | int nchars_string; | |
3742 | ||
3743 | /* lisp_string_width ignores a precision of 0, but GNU | |
3744 | libc functions print 0 characters when the precision | |
3745 | is 0. Imitate libc behavior here. Changing | |
3746 | lisp_string_width is the right thing, and will be | |
3747 | done, but meanwhile we work with it. */ | |
3748 | ||
3749 | if (precision[n] == 0) | |
3750 | width = nchars_string = nbytes = 0; | |
3751 | else if (precision[n] > 0) | |
3752 | width = lisp_string_width (args[n], precision[n], &nchars_string, &nbytes); | |
3753 | else | |
3754 | { /* no precision spec given for this argument */ | |
3755 | width = lisp_string_width (args[n], -1, NULL, NULL); | |
3756 | nbytes = SBYTES (args[n]); | |
3757 | nchars_string = SCHARS (args[n]); | |
3758 | } | |
25c9e7fb RS |
3759 | |
3760 | /* If spec requires it, pad on right with spaces. */ | |
3761 | padding = minlen - width; | |
3762 | if (! negative) | |
3763 | while (padding-- > 0) | |
3764 | { | |
3765 | *p++ = ' '; | |
50606b4c | 3766 | ++nchars; |
25c9e7fb | 3767 | } |
1f24f4fd | 3768 | |
8f2c9ed8 | 3769 | info[n].start = start = nchars; |
ac42d7b9 KG |
3770 | nchars += nchars_string; |
3771 | end = nchars; | |
3772 | ||
8f2917e4 KH |
3773 | if (p > buf |
3774 | && multibyte | |
25aa5d64 | 3775 | && !ASCII_BYTE_P (*((unsigned char *) p - 1)) |
8f2917e4 | 3776 | && STRING_MULTIBYTE (args[n]) |
d5db4077 | 3777 | && !CHAR_HEAD_P (SREF (args[n], 0))) |
8f2917e4 | 3778 | maybe_combine_byte = 1; |
ac42d7b9 KG |
3779 | |
3780 | p += copy_text (SDATA (args[n]), p, | |
3781 | nbytes, | |
3782 | STRING_MULTIBYTE (args[n]), multibyte); | |
1f24f4fd | 3783 | |
8f2c9ed8 RS |
3784 | info[n].end = nchars; |
3785 | ||
25c9e7fb RS |
3786 | if (negative) |
3787 | while (padding-- > 0) | |
3788 | { | |
3789 | *p++ = ' '; | |
3790 | nchars++; | |
3791 | } | |
5e6d5493 GM |
3792 | |
3793 | /* If this argument has text properties, record where | |
3794 | in the result string it appears. */ | |
d5db4077 | 3795 | if (STRING_INTERVALS (args[n])) |
d147ee84 | 3796 | info[n].intervals = arg_intervals = 1; |
1f24f4fd RS |
3797 | } |
3798 | else if (INTEGERP (args[n]) || FLOATP (args[n])) | |
3799 | { | |
3800 | int this_nchars; | |
3801 | ||
3802 | bcopy (this_format_start, this_format, | |
3803 | format - this_format_start); | |
3804 | this_format[format - this_format_start] = 0; | |
3805 | ||
d0183d38 | 3806 | if (INTEGERP (args[n])) |
de92d4d4 RS |
3807 | { |
3808 | if (format[-1] == 'd') | |
3809 | sprintf (p, this_format, XINT (args[n])); | |
3810 | /* Don't sign-extend for octal or hex printing. */ | |
3811 | else | |
3812 | sprintf (p, this_format, XUINT (args[n])); | |
3813 | } | |
c5c6b2cc | 3814 | else if (format[-1] == 'e' || format[-1] == 'f' || format[-1] == 'g') |
03699b14 | 3815 | sprintf (p, this_format, XFLOAT_DATA (args[n])); |
c5c6b2cc SM |
3816 | else if (format[-1] == 'd') |
3817 | /* Maybe we should use "%1.0f" instead so it also works | |
3818 | for values larger than MAXINT. */ | |
3819 | sprintf (p, this_format, (EMACS_INT) XFLOAT_DATA (args[n])); | |
3820 | else | |
3821 | /* Don't sign-extend for octal or hex printing. */ | |
3822 | sprintf (p, this_format, (EMACS_UINT) XFLOAT_DATA (args[n])); | |
1f24f4fd | 3823 | |
8f2917e4 KH |
3824 | if (p > buf |
3825 | && multibyte | |
25aa5d64 KH |
3826 | && !ASCII_BYTE_P (*((unsigned char *) p - 1)) |
3827 | && !CHAR_HEAD_P (*((unsigned char *) p))) | |
8f2917e4 | 3828 | maybe_combine_byte = 1; |
1f24f4fd | 3829 | this_nchars = strlen (p); |
9a599130 | 3830 | if (multibyte) |
7e2c051b | 3831 | p += str_to_multibyte (p, buf + total - 1 - p, this_nchars); |
9a599130 KH |
3832 | else |
3833 | p += this_nchars; | |
1f24f4fd | 3834 | nchars += this_nchars; |
8f2c9ed8 | 3835 | info[n].end = nchars; |
1f24f4fd | 3836 | } |
d147ee84 | 3837 | |
1f24f4fd | 3838 | } |
7df74da6 RS |
3839 | else if (STRING_MULTIBYTE (args[0])) |
3840 | { | |
3841 | /* Copy a whole multibyte character. */ | |
8f2917e4 KH |
3842 | if (p > buf |
3843 | && multibyte | |
25aa5d64 KH |
3844 | && !ASCII_BYTE_P (*((unsigned char *) p - 1)) |
3845 | && !CHAR_HEAD_P (*format)) | |
8f2917e4 | 3846 | maybe_combine_byte = 1; |
7df74da6 | 3847 | *p++ = *format++; |
d147ee84 RS |
3848 | while (! CHAR_HEAD_P (*format)) |
3849 | { | |
3850 | discarded[format - format_start] = 2; | |
3851 | *p++ = *format++; | |
3852 | } | |
7df74da6 RS |
3853 | nchars++; |
3854 | } | |
3855 | else if (multibyte) | |
1f24f4fd RS |
3856 | { |
3857 | /* Convert a single-byte character to multibyte. */ | |
3858 | int len = copy_text (format, p, 1, 0, 1); | |
3859 | ||
3860 | p += len; | |
3861 | format++; | |
3862 | nchars++; | |
3863 | } | |
3864 | else | |
3865 | *p++ = *format++, nchars++; | |
3866 | } | |
3867 | ||
7e2c051b | 3868 | if (p > buf + total) |
a432bfe5 GM |
3869 | abort (); |
3870 | ||
8f2917e4 KH |
3871 | if (maybe_combine_byte) |
3872 | nchars = multibyte_chars_in_text (buf, p - buf); | |
5f75e666 | 3873 | val = make_specified_string (buf, nchars, p - buf, multibyte); |
8d6179dc | 3874 | |
1f24f4fd | 3875 | /* If we allocated BUF with malloc, free it too. */ |
e65837df | 3876 | SAFE_FREE (); |
35692fe0 | 3877 | |
5e6d5493 GM |
3878 | /* If the format string has text properties, or any of the string |
3879 | arguments has text properties, set up text properties of the | |
3880 | result string. */ | |
34a7a267 | 3881 | |
d147ee84 | 3882 | if (STRING_INTERVALS (args[0]) || arg_intervals) |
5e6d5493 GM |
3883 | { |
3884 | Lisp_Object len, new_len, props; | |
3885 | struct gcpro gcpro1; | |
34a7a267 | 3886 | |
5e6d5493 | 3887 | /* Add text properties from the format string. */ |
d5db4077 | 3888 | len = make_number (SCHARS (args[0])); |
5e6d5493 GM |
3889 | props = text_property_list (args[0], make_number (0), len, Qnil); |
3890 | GCPRO1 (props); | |
34a7a267 | 3891 | |
5e6d5493 GM |
3892 | if (CONSP (props)) |
3893 | { | |
d147ee84 RS |
3894 | int bytepos = 0, position = 0, translated = 0, argn = 1; |
3895 | Lisp_Object list; | |
3896 | ||
3897 | /* Adjust the bounds of each text property | |
3898 | to the proper start and end in the output string. */ | |
d147ee84 | 3899 | |
15fad037 KS |
3900 | /* Put the positions in PROPS in increasing order, so that |
3901 | we can do (effectively) one scan through the position | |
3902 | space of the format string. */ | |
3903 | props = Fnreverse (props); | |
3904 | ||
3905 | /* BYTEPOS is the byte position in the format string, | |
d147ee84 RS |
3906 | POSITION is the untranslated char position in it, |
3907 | TRANSLATED is the translated char position in BUF, | |
3908 | and ARGN is the number of the next arg we will come to. */ | |
3909 | for (list = props; CONSP (list); list = XCDR (list)) | |
3910 | { | |
f3ce1df8 SM |
3911 | Lisp_Object item; |
3912 | int pos; | |
d147ee84 RS |
3913 | |
3914 | item = XCAR (list); | |
3915 | ||
3916 | /* First adjust the property start position. */ | |
3917 | pos = XINT (XCAR (item)); | |
3918 | ||
3919 | /* Advance BYTEPOS, POSITION, TRANSLATED and ARGN | |
3920 | up to this position. */ | |
3921 | for (; position < pos; bytepos++) | |
3922 | { | |
3923 | if (! discarded[bytepos]) | |
3924 | position++, translated++; | |
3925 | else if (discarded[bytepos] == 1) | |
3926 | { | |
3927 | position++; | |
3928 | if (translated == info[argn].start) | |
3929 | { | |
3930 | translated += info[argn].end - info[argn].start; | |
3931 | argn++; | |
3932 | } | |
3933 | } | |
3934 | } | |
3935 | ||
3936 | XSETCAR (item, make_number (translated)); | |
3937 | ||
3938 | /* Likewise adjust the property end position. */ | |
3939 | pos = XINT (XCAR (XCDR (item))); | |
3940 | ||
d40ec4a0 | 3941 | for (; position < pos; bytepos++) |
d147ee84 RS |
3942 | { |
3943 | if (! discarded[bytepos]) | |
3944 | position++, translated++; | |
3945 | else if (discarded[bytepos] == 1) | |
3946 | { | |
3947 | position++; | |
3948 | if (translated == info[argn].start) | |
3949 | { | |
3950 | translated += info[argn].end - info[argn].start; | |
3951 | argn++; | |
3952 | } | |
3953 | } | |
3954 | } | |
3955 | ||
3956 | XSETCAR (XCDR (item), make_number (translated)); | |
3957 | } | |
3958 | ||
5e6d5493 GM |
3959 | add_text_properties_from_list (val, props, make_number (0)); |
3960 | } | |
3961 | ||
3962 | /* Add text properties from arguments. */ | |
d147ee84 | 3963 | if (arg_intervals) |
5e6d5493 | 3964 | for (n = 1; n < nargs; ++n) |
d147ee84 | 3965 | if (info[n].intervals) |
5e6d5493 | 3966 | { |
d5db4077 | 3967 | len = make_number (SCHARS (args[n])); |
5e6d5493 GM |
3968 | new_len = make_number (info[n].end - info[n].start); |
3969 | props = text_property_list (args[n], make_number (0), len, Qnil); | |
3970 | extend_property_ranges (props, len, new_len); | |
be17069b KH |
3971 | /* If successive arguments have properites, be sure that |
3972 | the value of `composition' property be the copy. */ | |
3973 | if (n > 1 && info[n - 1].end) | |
3974 | make_composition_value_copy (props); | |
5e6d5493 GM |
3975 | add_text_properties_from_list (val, props, |
3976 | make_number (info[n].start)); | |
3977 | } | |
3978 | ||
3979 | UNGCPRO; | |
3980 | } | |
3981 | ||
8d6179dc | 3982 | return val; |
35692fe0 JB |
3983 | } |
3984 | ||
35692fe0 | 3985 | Lisp_Object |
d40dc1d0 | 3986 | format2 (string1, arg0, arg1) |
35692fe0 | 3987 | char *string1; |
d40dc1d0 RS |
3988 | Lisp_Object arg0, arg1; |
3989 | { | |
3990 | Lisp_Object args[3]; | |
d40dc1d0 RS |
3991 | args[0] = build_string (string1); |
3992 | args[1] = arg0; | |
3993 | args[2] = arg1; | |
3994 | return Fformat (3, args); | |
35692fe0 JB |
3995 | } |
3996 | \f | |
3997 | DEFUN ("char-equal", Fchar_equal, Schar_equal, 2, 2, 0, | |
7ee72033 | 3998 | doc: /* Return t if two characters match, optionally ignoring case. |
a1f17501 | 3999 | Both arguments must be characters (i.e. integers). |
7ee72033 MB |
4000 | Case is ignored if `case-fold-search' is non-nil in the current buffer. */) |
4001 | (c1, c2) | |
35692fe0 JB |
4002 | register Lisp_Object c1, c2; |
4003 | { | |
1b5d98bb | 4004 | int i1, i2; |
b7826503 PJ |
4005 | CHECK_NUMBER (c1); |
4006 | CHECK_NUMBER (c2); | |
35692fe0 | 4007 | |
1b5d98bb | 4008 | if (XINT (c1) == XINT (c2)) |
35692fe0 | 4009 | return Qt; |
1b5d98bb RS |
4010 | if (NILP (current_buffer->case_fold_search)) |
4011 | return Qnil; | |
4012 | ||
4013 | /* Do these in separate statements, | |
4014 | then compare the variables. | |
4015 | because of the way DOWNCASE uses temp variables. */ | |
4016 | i1 = DOWNCASE (XFASTINT (c1)); | |
4017 | i2 = DOWNCASE (XFASTINT (c2)); | |
4018 | return (i1 == i2 ? Qt : Qnil); | |
35692fe0 | 4019 | } |
b229b8d1 RS |
4020 | \f |
4021 | /* Transpose the markers in two regions of the current buffer, and | |
4022 | adjust the ones between them if necessary (i.e.: if the regions | |
4023 | differ in size). | |
4024 | ||
ec1c14f6 RS |
4025 | START1, END1 are the character positions of the first region. |
4026 | START1_BYTE, END1_BYTE are the byte positions. | |
4027 | START2, END2 are the character positions of the second region. | |
4028 | START2_BYTE, END2_BYTE are the byte positions. | |
4029 | ||
b229b8d1 RS |
4030 | Traverses the entire marker list of the buffer to do so, adding an |
4031 | appropriate amount to some, subtracting from some, and leaving the | |
4032 | rest untouched. Most of this is copied from adjust_markers in insdel.c. | |
34a7a267 | 4033 | |
ec1c14f6 | 4034 | It's the caller's job to ensure that START1 <= END1 <= START2 <= END2. */ |
b229b8d1 | 4035 | |
acb7cc89 | 4036 | static void |
ec1c14f6 RS |
4037 | transpose_markers (start1, end1, start2, end2, |
4038 | start1_byte, end1_byte, start2_byte, end2_byte) | |
b229b8d1 | 4039 | register int start1, end1, start2, end2; |
ec1c14f6 | 4040 | register int start1_byte, end1_byte, start2_byte, end2_byte; |
b229b8d1 | 4041 | { |
ec1c14f6 | 4042 | register int amt1, amt1_byte, amt2, amt2_byte, diff, diff_byte, mpos; |
12038f9f | 4043 | register struct Lisp_Marker *marker; |
b229b8d1 | 4044 | |
03240d11 | 4045 | /* Update point as if it were a marker. */ |
8de1d5f0 KH |
4046 | if (PT < start1) |
4047 | ; | |
4048 | else if (PT < end1) | |
ec1c14f6 RS |
4049 | TEMP_SET_PT_BOTH (PT + (end2 - end1), |
4050 | PT_BYTE + (end2_byte - end1_byte)); | |
8de1d5f0 | 4051 | else if (PT < start2) |
ec1c14f6 RS |
4052 | TEMP_SET_PT_BOTH (PT + (end2 - start2) - (end1 - start1), |
4053 | (PT_BYTE + (end2_byte - start2_byte) | |
4054 | - (end1_byte - start1_byte))); | |
8de1d5f0 | 4055 | else if (PT < end2) |
ec1c14f6 RS |
4056 | TEMP_SET_PT_BOTH (PT - (start2 - start1), |
4057 | PT_BYTE - (start2_byte - start1_byte)); | |
8de1d5f0 | 4058 | |
03240d11 KH |
4059 | /* We used to adjust the endpoints here to account for the gap, but that |
4060 | isn't good enough. Even if we assume the caller has tried to move the | |
4061 | gap out of our way, it might still be at start1 exactly, for example; | |
4062 | and that places it `inside' the interval, for our purposes. The amount | |
4063 | of adjustment is nontrivial if there's a `denormalized' marker whose | |
4064 | position is between GPT and GPT + GAP_SIZE, so it's simpler to leave | |
4065 | the dirty work to Fmarker_position, below. */ | |
b229b8d1 RS |
4066 | |
4067 | /* The difference between the region's lengths */ | |
4068 | diff = (end2 - start2) - (end1 - start1); | |
ec1c14f6 | 4069 | diff_byte = (end2_byte - start2_byte) - (end1_byte - start1_byte); |
34a7a267 | 4070 | |
b229b8d1 | 4071 | /* For shifting each marker in a region by the length of the other |
ec1c14f6 | 4072 | region plus the distance between the regions. */ |
b229b8d1 RS |
4073 | amt1 = (end2 - start2) + (start2 - end1); |
4074 | amt2 = (end1 - start1) + (start2 - end1); | |
ec1c14f6 RS |
4075 | amt1_byte = (end2_byte - start2_byte) + (start2_byte - end1_byte); |
4076 | amt2_byte = (end1_byte - start1_byte) + (start2_byte - end1_byte); | |
b229b8d1 | 4077 | |
12038f9f | 4078 | for (marker = BUF_MARKERS (current_buffer); marker; marker = marker->next) |
b229b8d1 | 4079 | { |
12038f9f | 4080 | mpos = marker->bytepos; |
ec1c14f6 RS |
4081 | if (mpos >= start1_byte && mpos < end2_byte) |
4082 | { | |
4083 | if (mpos < end1_byte) | |
4084 | mpos += amt1_byte; | |
4085 | else if (mpos < start2_byte) | |
4086 | mpos += diff_byte; | |
4087 | else | |
4088 | mpos -= amt2_byte; | |
12038f9f | 4089 | marker->bytepos = mpos; |
ec1c14f6 | 4090 | } |
12038f9f | 4091 | mpos = marker->charpos; |
03240d11 KH |
4092 | if (mpos >= start1 && mpos < end2) |
4093 | { | |
4094 | if (mpos < end1) | |
4095 | mpos += amt1; | |
4096 | else if (mpos < start2) | |
4097 | mpos += diff; | |
4098 | else | |
4099 | mpos -= amt2; | |
03240d11 | 4100 | } |
12038f9f | 4101 | marker->charpos = mpos; |
b229b8d1 RS |
4102 | } |
4103 | } | |
4104 | ||
4105 | DEFUN ("transpose-regions", Ftranspose_regions, Stranspose_regions, 4, 5, 0, | |
412f1fab | 4106 | doc: /* Transpose region STARTR1 to ENDR1 with STARTR2 to ENDR2. |
a1f17501 PJ |
4107 | The regions may not be overlapping, because the size of the buffer is |
4108 | never changed in a transposition. | |
4109 | ||
412f1fab | 4110 | Optional fifth arg LEAVE-MARKERS, if non-nil, means don't update |
a1f17501 PJ |
4111 | any markers that happen to be located in the regions. |
4112 | ||
7ee72033 MB |
4113 | Transposing beyond buffer boundaries is an error. */) |
4114 | (startr1, endr1, startr2, endr2, leave_markers) | |
b229b8d1 RS |
4115 | Lisp_Object startr1, endr1, startr2, endr2, leave_markers; |
4116 | { | |
ec1c14f6 RS |
4117 | register int start1, end1, start2, end2; |
4118 | int start1_byte, start2_byte, len1_byte, len2_byte; | |
4119 | int gap, len1, len_mid, len2; | |
3c6bc7d0 | 4120 | unsigned char *start1_addr, *start2_addr, *temp; |
b229b8d1 | 4121 | |
6cd0f478 | 4122 | INTERVAL cur_intv, tmp_interval1, tmp_interval_mid, tmp_interval2, tmp_interval3; |
916480c4 CY |
4123 | Lisp_Object buf; |
4124 | ||
4125 | XSETBUFFER (buf, current_buffer); | |
1e158d25 | 4126 | cur_intv = BUF_INTERVALS (current_buffer); |
b229b8d1 RS |
4127 | |
4128 | validate_region (&startr1, &endr1); | |
4129 | validate_region (&startr2, &endr2); | |
4130 | ||
4131 | start1 = XFASTINT (startr1); | |
4132 | end1 = XFASTINT (endr1); | |
4133 | start2 = XFASTINT (startr2); | |
4134 | end2 = XFASTINT (endr2); | |
4135 | gap = GPT; | |
4136 | ||
4137 | /* Swap the regions if they're reversed. */ | |
4138 | if (start2 < end1) | |
4139 | { | |
4140 | register int glumph = start1; | |
4141 | start1 = start2; | |
4142 | start2 = glumph; | |
4143 | glumph = end1; | |
4144 | end1 = end2; | |
4145 | end2 = glumph; | |
4146 | } | |
4147 | ||
b229b8d1 RS |
4148 | len1 = end1 - start1; |
4149 | len2 = end2 - start2; | |
4150 | ||
4151 | if (start2 < end1) | |
dc3620af | 4152 | error ("Transposed regions overlap"); |
b229b8d1 | 4153 | else if (start1 == end1 || start2 == end2) |
dc3620af | 4154 | error ("Transposed region has length 0"); |
b229b8d1 RS |
4155 | |
4156 | /* The possibilities are: | |
4157 | 1. Adjacent (contiguous) regions, or separate but equal regions | |
4158 | (no, really equal, in this case!), or | |
4159 | 2. Separate regions of unequal size. | |
34a7a267 | 4160 | |
b229b8d1 RS |
4161 | The worst case is usually No. 2. It means that (aside from |
4162 | potential need for getting the gap out of the way), there also | |
4163 | needs to be a shifting of the text between the two regions. So | |
4164 | if they are spread far apart, we are that much slower... sigh. */ | |
4165 | ||
4166 | /* It must be pointed out that the really studly thing to do would | |
4167 | be not to move the gap at all, but to leave it in place and work | |
4168 | around it if necessary. This would be extremely efficient, | |
4169 | especially considering that people are likely to do | |
4170 | transpositions near where they are working interactively, which | |
4171 | is exactly where the gap would be found. However, such code | |
4172 | would be much harder to write and to read. So, if you are | |
4173 | reading this comment and are feeling squirrely, by all means have | |
4174 | a go! I just didn't feel like doing it, so I will simply move | |
4175 | the gap the minimum distance to get it out of the way, and then | |
4176 | deal with an unbroken array. */ | |
3c6bc7d0 RS |
4177 | |
4178 | /* Make sure the gap won't interfere, by moving it out of the text | |
4179 | we will operate on. */ | |
4180 | if (start1 < gap && gap < end2) | |
4181 | { | |
4182 | if (gap - start1 < end2 - gap) | |
4183 | move_gap (start1); | |
4184 | else | |
4185 | move_gap (end2); | |
4186 | } | |
ec1c14f6 RS |
4187 | |
4188 | start1_byte = CHAR_TO_BYTE (start1); | |
4189 | start2_byte = CHAR_TO_BYTE (start2); | |
4190 | len1_byte = CHAR_TO_BYTE (end1) - start1_byte; | |
4191 | len2_byte = CHAR_TO_BYTE (end2) - start2_byte; | |
dc3620af | 4192 | |
9a599130 | 4193 | #ifdef BYTE_COMBINING_DEBUG |
dc3620af RS |
4194 | if (end1 == start2) |
4195 | { | |
9a599130 KH |
4196 | if (count_combining_before (BYTE_POS_ADDR (start2_byte), |
4197 | len2_byte, start1, start1_byte) | |
4198 | || count_combining_before (BYTE_POS_ADDR (start1_byte), | |
4199 | len1_byte, end2, start2_byte + len2_byte) | |
4200 | || count_combining_after (BYTE_POS_ADDR (start1_byte), | |
4201 | len1_byte, end2, start2_byte + len2_byte)) | |
4202 | abort (); | |
dc3620af RS |
4203 | } |
4204 | else | |
4205 | { | |
9a599130 KH |
4206 | if (count_combining_before (BYTE_POS_ADDR (start2_byte), |
4207 | len2_byte, start1, start1_byte) | |
4208 | || count_combining_before (BYTE_POS_ADDR (start1_byte), | |
4209 | len1_byte, start2, start2_byte) | |
4210 | || count_combining_after (BYTE_POS_ADDR (start2_byte), | |
4211 | len2_byte, end1, start1_byte + len1_byte) | |
4212 | || count_combining_after (BYTE_POS_ADDR (start1_byte), | |
4213 | len1_byte, end2, start2_byte + len2_byte)) | |
4214 | abort (); | |
dc3620af | 4215 | } |
9a599130 | 4216 | #endif |
dc3620af | 4217 | |
b229b8d1 RS |
4218 | /* Hmmm... how about checking to see if the gap is large |
4219 | enough to use as the temporary storage? That would avoid an | |
4220 | allocation... interesting. Later, don't fool with it now. */ | |
4221 | ||
4222 | /* Working without memmove, for portability (sigh), so must be | |
4223 | careful of overlapping subsections of the array... */ | |
4224 | ||
4225 | if (end1 == start2) /* adjacent regions */ | |
4226 | { | |
3e145152 | 4227 | modify_region (current_buffer, start1, end2, 0); |
b229b8d1 RS |
4228 | record_change (start1, len1 + len2); |
4229 | ||
b229b8d1 RS |
4230 | tmp_interval1 = copy_intervals (cur_intv, start1, len1); |
4231 | tmp_interval2 = copy_intervals (cur_intv, start2, len2); | |
916480c4 CY |
4232 | /* Don't use Fset_text_properties: that can cause GC, which can |
4233 | clobber objects stored in the tmp_intervals. */ | |
6cd0f478 CY |
4234 | tmp_interval3 = validate_interval_range (buf, &startr1, &endr2, 0); |
4235 | if (!NULL_INTERVAL_P (tmp_interval3)) | |
4236 | set_text_properties_1 (startr1, endr2, Qnil, buf, tmp_interval3); | |
b229b8d1 RS |
4237 | |
4238 | /* First region smaller than second. */ | |
ec1c14f6 | 4239 | if (len1_byte < len2_byte) |
b229b8d1 | 4240 | { |
7e2c051b KS |
4241 | USE_SAFE_ALLOCA; |
4242 | ||
4243 | SAFE_ALLOCA (temp, unsigned char *, len2_byte); | |
03240d11 KH |
4244 | |
4245 | /* Don't precompute these addresses. We have to compute them | |
4246 | at the last minute, because the relocating allocator might | |
4247 | have moved the buffer around during the xmalloc. */ | |
23017390 KH |
4248 | start1_addr = BYTE_POS_ADDR (start1_byte); |
4249 | start2_addr = BYTE_POS_ADDR (start2_byte); | |
03240d11 | 4250 | |
ec1c14f6 RS |
4251 | bcopy (start2_addr, temp, len2_byte); |
4252 | bcopy (start1_addr, start1_addr + len2_byte, len1_byte); | |
4253 | bcopy (temp, start1_addr, len2_byte); | |
e65837df | 4254 | SAFE_FREE (); |
b229b8d1 RS |
4255 | } |
4256 | else | |
4257 | /* First region not smaller than second. */ | |
4258 | { | |
7e2c051b KS |
4259 | USE_SAFE_ALLOCA; |
4260 | ||
4261 | SAFE_ALLOCA (temp, unsigned char *, len1_byte); | |
23017390 KH |
4262 | start1_addr = BYTE_POS_ADDR (start1_byte); |
4263 | start2_addr = BYTE_POS_ADDR (start2_byte); | |
ec1c14f6 RS |
4264 | bcopy (start1_addr, temp, len1_byte); |
4265 | bcopy (start2_addr, start1_addr, len2_byte); | |
4266 | bcopy (temp, start1_addr + len2_byte, len1_byte); | |
e65837df | 4267 | SAFE_FREE (); |
b229b8d1 | 4268 | } |
b229b8d1 RS |
4269 | graft_intervals_into_buffer (tmp_interval1, start1 + len2, |
4270 | len1, current_buffer, 0); | |
4271 | graft_intervals_into_buffer (tmp_interval2, start1, | |
4272 | len2, current_buffer, 0); | |
d5c2c403 KH |
4273 | update_compositions (start1, start1 + len2, CHECK_BORDER); |
4274 | update_compositions (start1 + len2, end2, CHECK_TAIL); | |
b229b8d1 RS |
4275 | } |
4276 | /* Non-adjacent regions, because end1 != start2, bleagh... */ | |
4277 | else | |
4278 | { | |
ec1c14f6 RS |
4279 | len_mid = start2_byte - (start1_byte + len1_byte); |
4280 | ||
4281 | if (len1_byte == len2_byte) | |
b229b8d1 RS |
4282 | /* Regions are same size, though, how nice. */ |
4283 | { | |
7e2c051b KS |
4284 | USE_SAFE_ALLOCA; |
4285 | ||
3e145152 CY |
4286 | modify_region (current_buffer, start1, end1, 0); |
4287 | modify_region (current_buffer, start2, end2, 0); | |
b229b8d1 RS |
4288 | record_change (start1, len1); |
4289 | record_change (start2, len2); | |
b229b8d1 RS |
4290 | tmp_interval1 = copy_intervals (cur_intv, start1, len1); |
4291 | tmp_interval2 = copy_intervals (cur_intv, start2, len2); | |
6cd0f478 CY |
4292 | |
4293 | tmp_interval3 = validate_interval_range (buf, &startr1, &endr1, 0); | |
4294 | if (!NULL_INTERVAL_P (tmp_interval3)) | |
4295 | set_text_properties_1 (startr1, endr1, Qnil, buf, tmp_interval3); | |
4296 | ||
4297 | tmp_interval3 = validate_interval_range (buf, &startr2, &endr2, 0); | |
4298 | if (!NULL_INTERVAL_P (tmp_interval3)) | |
4299 | set_text_properties_1 (startr2, endr2, Qnil, buf, tmp_interval3); | |
b229b8d1 | 4300 | |
7e2c051b | 4301 | SAFE_ALLOCA (temp, unsigned char *, len1_byte); |
23017390 KH |
4302 | start1_addr = BYTE_POS_ADDR (start1_byte); |
4303 | start2_addr = BYTE_POS_ADDR (start2_byte); | |
ec1c14f6 RS |
4304 | bcopy (start1_addr, temp, len1_byte); |
4305 | bcopy (start2_addr, start1_addr, len2_byte); | |
4306 | bcopy (temp, start2_addr, len1_byte); | |
e65837df | 4307 | SAFE_FREE (); |
7e2c051b | 4308 | |
b229b8d1 RS |
4309 | graft_intervals_into_buffer (tmp_interval1, start2, |
4310 | len1, current_buffer, 0); | |
4311 | graft_intervals_into_buffer (tmp_interval2, start1, | |
4312 | len2, current_buffer, 0); | |
b229b8d1 RS |
4313 | } |
4314 | ||
ec1c14f6 | 4315 | else if (len1_byte < len2_byte) /* Second region larger than first */ |
b229b8d1 RS |
4316 | /* Non-adjacent & unequal size, area between must also be shifted. */ |
4317 | { | |
7e2c051b KS |
4318 | USE_SAFE_ALLOCA; |
4319 | ||
3e145152 | 4320 | modify_region (current_buffer, start1, end2, 0); |
b229b8d1 | 4321 | record_change (start1, (end2 - start1)); |
b229b8d1 RS |
4322 | tmp_interval1 = copy_intervals (cur_intv, start1, len1); |
4323 | tmp_interval_mid = copy_intervals (cur_intv, end1, len_mid); | |
4324 | tmp_interval2 = copy_intervals (cur_intv, start2, len2); | |
6cd0f478 CY |
4325 | |
4326 | tmp_interval3 = validate_interval_range (buf, &startr1, &endr2, 0); | |
4327 | if (!NULL_INTERVAL_P (tmp_interval3)) | |
4328 | set_text_properties_1 (startr1, endr2, Qnil, buf, tmp_interval3); | |
b229b8d1 | 4329 | |
3c6bc7d0 | 4330 | /* holds region 2 */ |
7e2c051b | 4331 | SAFE_ALLOCA (temp, unsigned char *, len2_byte); |
23017390 KH |
4332 | start1_addr = BYTE_POS_ADDR (start1_byte); |
4333 | start2_addr = BYTE_POS_ADDR (start2_byte); | |
ec1c14f6 RS |
4334 | bcopy (start2_addr, temp, len2_byte); |
4335 | bcopy (start1_addr, start1_addr + len_mid + len2_byte, len1_byte); | |
4336 | safe_bcopy (start1_addr + len1_byte, start1_addr + len2_byte, len_mid); | |
4337 | bcopy (temp, start1_addr, len2_byte); | |
e65837df | 4338 | SAFE_FREE (); |
7e2c051b | 4339 | |
b229b8d1 RS |
4340 | graft_intervals_into_buffer (tmp_interval1, end2 - len1, |
4341 | len1, current_buffer, 0); | |
4342 | graft_intervals_into_buffer (tmp_interval_mid, start1 + len2, | |
4343 | len_mid, current_buffer, 0); | |
4344 | graft_intervals_into_buffer (tmp_interval2, start1, | |
4345 | len2, current_buffer, 0); | |
b229b8d1 RS |
4346 | } |
4347 | else | |
4348 | /* Second region smaller than first. */ | |
4349 | { | |
7e2c051b KS |
4350 | USE_SAFE_ALLOCA; |
4351 | ||
b229b8d1 | 4352 | record_change (start1, (end2 - start1)); |
3e145152 | 4353 | modify_region (current_buffer, start1, end2, 0); |
b229b8d1 | 4354 | |
b229b8d1 RS |
4355 | tmp_interval1 = copy_intervals (cur_intv, start1, len1); |
4356 | tmp_interval_mid = copy_intervals (cur_intv, end1, len_mid); | |
4357 | tmp_interval2 = copy_intervals (cur_intv, start2, len2); | |
6cd0f478 CY |
4358 | |
4359 | tmp_interval3 = validate_interval_range (buf, &startr1, &endr2, 0); | |
4360 | if (!NULL_INTERVAL_P (tmp_interval3)) | |
4361 | set_text_properties_1 (startr1, endr2, Qnil, buf, tmp_interval3); | |
b229b8d1 | 4362 | |
3c6bc7d0 | 4363 | /* holds region 1 */ |
7e2c051b | 4364 | SAFE_ALLOCA (temp, unsigned char *, len1_byte); |
23017390 KH |
4365 | start1_addr = BYTE_POS_ADDR (start1_byte); |
4366 | start2_addr = BYTE_POS_ADDR (start2_byte); | |
ec1c14f6 RS |
4367 | bcopy (start1_addr, temp, len1_byte); |
4368 | bcopy (start2_addr, start1_addr, len2_byte); | |
4369 | bcopy (start1_addr + len1_byte, start1_addr + len2_byte, len_mid); | |
4370 | bcopy (temp, start1_addr + len2_byte + len_mid, len1_byte); | |
e65837df | 4371 | SAFE_FREE (); |
7e2c051b | 4372 | |
b229b8d1 RS |
4373 | graft_intervals_into_buffer (tmp_interval1, end2 - len1, |
4374 | len1, current_buffer, 0); | |
4375 | graft_intervals_into_buffer (tmp_interval_mid, start1 + len2, | |
4376 | len_mid, current_buffer, 0); | |
4377 | graft_intervals_into_buffer (tmp_interval2, start1, | |
4378 | len2, current_buffer, 0); | |
b229b8d1 | 4379 | } |
d5c2c403 KH |
4380 | |
4381 | update_compositions (start1, start1 + len2, CHECK_BORDER); | |
4382 | update_compositions (end2 - len1, end2, CHECK_BORDER); | |
b229b8d1 RS |
4383 | } |
4384 | ||
ec1c14f6 RS |
4385 | /* When doing multiple transpositions, it might be nice |
4386 | to optimize this. Perhaps the markers in any one buffer | |
4387 | should be organized in some sorted data tree. */ | |
b229b8d1 | 4388 | if (NILP (leave_markers)) |
8de1d5f0 | 4389 | { |
ec1c14f6 RS |
4390 | transpose_markers (start1, end1, start2, end2, |
4391 | start1_byte, start1_byte + len1_byte, | |
4392 | start2_byte, start2_byte + len2_byte); | |
abdb9b83 | 4393 | fix_start_end_in_overlays (start1, end2); |
8de1d5f0 | 4394 | } |
b229b8d1 | 4395 | |
c10b2810 | 4396 | signal_after_change (start1, end2 - start1, end2 - start1); |
b229b8d1 RS |
4397 | return Qnil; |
4398 | } | |
35692fe0 | 4399 | |
35692fe0 JB |
4400 | \f |
4401 | void | |
4402 | syms_of_editfns () | |
4403 | { | |
260e2e2a KH |
4404 | environbuf = 0; |
4405 | ||
4406 | Qbuffer_access_fontify_functions | |
4407 | = intern ("buffer-access-fontify-functions"); | |
4408 | staticpro (&Qbuffer_access_fontify_functions); | |
4409 | ||
7ee72033 | 4410 | DEFVAR_LISP ("inhibit-field-text-motion", &Vinhibit_field_text_motion, |
7dcece14 | 4411 | doc: /* Non-nil means text motion commands don't notice fields. */); |
9a74e7e5 GM |
4412 | Vinhibit_field_text_motion = Qnil; |
4413 | ||
260e2e2a | 4414 | DEFVAR_LISP ("buffer-access-fontify-functions", |
7ee72033 MB |
4415 | &Vbuffer_access_fontify_functions, |
4416 | doc: /* List of functions called by `buffer-substring' to fontify if necessary. | |
a1f17501 PJ |
4417 | Each function is called with two arguments which specify the range |
4418 | of the buffer being accessed. */); | |
260e2e2a KH |
4419 | Vbuffer_access_fontify_functions = Qnil; |
4420 | ||
af209db8 RS |
4421 | { |
4422 | Lisp_Object obuf; | |
4423 | extern Lisp_Object Vprin1_to_string_buffer; | |
4424 | obuf = Fcurrent_buffer (); | |
4425 | /* Do this here, because init_buffer_once is too early--it won't work. */ | |
4426 | Fset_buffer (Vprin1_to_string_buffer); | |
4427 | /* Make sure buffer-access-fontify-functions is nil in this buffer. */ | |
4428 | Fset (Fmake_local_variable (intern ("buffer-access-fontify-functions")), | |
4429 | Qnil); | |
4430 | Fset_buffer (obuf); | |
4431 | } | |
4432 | ||
0b6fd023 | 4433 | DEFVAR_LISP ("buffer-access-fontified-property", |
7ee72033 MB |
4434 | &Vbuffer_access_fontified_property, |
4435 | doc: /* Property which (if non-nil) indicates text has been fontified. | |
a1f17501 PJ |
4436 | `buffer-substring' need not call the `buffer-access-fontify-functions' |
4437 | functions if all the text being accessed has this property. */); | |
260e2e2a KH |
4438 | Vbuffer_access_fontified_property = Qnil; |
4439 | ||
7ee72033 | 4440 | DEFVAR_LISP ("system-name", &Vsystem_name, |
1a7e0117 | 4441 | doc: /* The host name of the machine Emacs is running on. */); |
34a7a267 | 4442 | |
7ee72033 MB |
4443 | DEFVAR_LISP ("user-full-name", &Vuser_full_name, |
4444 | doc: /* The full name of the user logged in. */); | |
f43754f6 | 4445 | |
7ee72033 MB |
4446 | DEFVAR_LISP ("user-login-name", &Vuser_login_name, |
4447 | doc: /* The user's name, taken from environment variables if possible. */); | |
f43754f6 | 4448 | |
7ee72033 MB |
4449 | DEFVAR_LISP ("user-real-login-name", &Vuser_real_login_name, |
4450 | doc: /* The user's name, based upon the real uid only. */); | |
35692fe0 | 4451 | |
3bb9abc8 ST |
4452 | DEFVAR_LISP ("operating-system-release", &Voperating_system_release, |
4453 | doc: /* The release of the operating system Emacs is running on. */); | |
4454 | ||
0963334d | 4455 | defsubr (&Spropertize); |
35692fe0 JB |
4456 | defsubr (&Schar_equal); |
4457 | defsubr (&Sgoto_char); | |
4458 | defsubr (&Sstring_to_char); | |
4459 | defsubr (&Schar_to_string); | |
4460 | defsubr (&Sbuffer_substring); | |
260e2e2a | 4461 | defsubr (&Sbuffer_substring_no_properties); |
35692fe0 JB |
4462 | defsubr (&Sbuffer_string); |
4463 | ||
4464 | defsubr (&Spoint_marker); | |
4465 | defsubr (&Smark_marker); | |
4466 | defsubr (&Spoint); | |
4467 | defsubr (&Sregion_beginning); | |
4468 | defsubr (&Sregion_end); | |
7df74da6 | 4469 | |
0daf6e8d GM |
4470 | staticpro (&Qfield); |
4471 | Qfield = intern ("field"); | |
ee547125 MB |
4472 | staticpro (&Qboundary); |
4473 | Qboundary = intern ("boundary"); | |
0daf6e8d GM |
4474 | defsubr (&Sfield_beginning); |
4475 | defsubr (&Sfield_end); | |
4476 | defsubr (&Sfield_string); | |
4477 | defsubr (&Sfield_string_no_properties); | |
8bf64fe8 | 4478 | defsubr (&Sdelete_field); |
0daf6e8d GM |
4479 | defsubr (&Sconstrain_to_field); |
4480 | ||
7df74da6 RS |
4481 | defsubr (&Sline_beginning_position); |
4482 | defsubr (&Sline_end_position); | |
4483 | ||
35692fe0 JB |
4484 | /* defsubr (&Smark); */ |
4485 | /* defsubr (&Sset_mark); */ | |
4486 | defsubr (&Ssave_excursion); | |
4bc8c7d2 | 4487 | defsubr (&Ssave_current_buffer); |
35692fe0 JB |
4488 | |
4489 | defsubr (&Sbufsize); | |
4490 | defsubr (&Spoint_max); | |
4491 | defsubr (&Spoint_min); | |
4492 | defsubr (&Spoint_min_marker); | |
4493 | defsubr (&Spoint_max_marker); | |
c86212b9 RS |
4494 | defsubr (&Sgap_position); |
4495 | defsubr (&Sgap_size); | |
7df74da6 | 4496 | defsubr (&Sposition_bytes); |
3ab0732d | 4497 | defsubr (&Sbyte_to_position); |
c9ed721d | 4498 | |
35692fe0 JB |
4499 | defsubr (&Sbobp); |
4500 | defsubr (&Seobp); | |
4501 | defsubr (&Sbolp); | |
4502 | defsubr (&Seolp); | |
850a8179 JB |
4503 | defsubr (&Sfollowing_char); |
4504 | defsubr (&Sprevious_char); | |
35692fe0 | 4505 | defsubr (&Schar_after); |
fb8106e8 | 4506 | defsubr (&Schar_before); |
35692fe0 JB |
4507 | defsubr (&Sinsert); |
4508 | defsubr (&Sinsert_before_markers); | |
be91036a RS |
4509 | defsubr (&Sinsert_and_inherit); |
4510 | defsubr (&Sinsert_and_inherit_before_markers); | |
35692fe0 JB |
4511 | defsubr (&Sinsert_char); |
4512 | ||
4513 | defsubr (&Suser_login_name); | |
4514 | defsubr (&Suser_real_login_name); | |
4515 | defsubr (&Suser_uid); | |
4516 | defsubr (&Suser_real_uid); | |
4517 | defsubr (&Suser_full_name); | |
7fd233b3 | 4518 | defsubr (&Semacs_pid); |
d940e0e4 | 4519 | defsubr (&Scurrent_time); |
4211ee7d | 4520 | defsubr (&Sget_internal_run_time); |
a82d387c | 4521 | defsubr (&Sformat_time_string); |
34a7a267 | 4522 | defsubr (&Sfloat_time); |
4691c06d | 4523 | defsubr (&Sdecode_time); |
cce7b8a0 | 4524 | defsubr (&Sencode_time); |
35692fe0 | 4525 | defsubr (&Scurrent_time_string); |
c2662aea | 4526 | defsubr (&Scurrent_time_zone); |
143cb9a9 | 4527 | defsubr (&Sset_time_zone_rule); |
35692fe0 | 4528 | defsubr (&Ssystem_name); |
35692fe0 | 4529 | defsubr (&Smessage); |
cacc3e2c RS |
4530 | defsubr (&Smessage_box); |
4531 | defsubr (&Smessage_or_box); | |
b14dda8a | 4532 | defsubr (&Scurrent_message); |
35692fe0 | 4533 | defsubr (&Sformat); |
35692fe0 JB |
4534 | |
4535 | defsubr (&Sinsert_buffer_substring); | |
e9cf2084 | 4536 | defsubr (&Scompare_buffer_substrings); |
35692fe0 | 4537 | defsubr (&Ssubst_char_in_region); |
365d1467 | 4538 | defsubr (&Stranslate_region_internal); |
35692fe0 | 4539 | defsubr (&Sdelete_region); |
7dae4502 | 4540 | defsubr (&Sdelete_and_extract_region); |
35692fe0 JB |
4541 | defsubr (&Swiden); |
4542 | defsubr (&Snarrow_to_region); | |
4543 | defsubr (&Ssave_restriction); | |
b229b8d1 | 4544 | defsubr (&Stranspose_regions); |
35692fe0 | 4545 | } |
ab5796a9 MB |
4546 | |
4547 | /* arch-tag: fc3827d8-6f60-4067-b11e-c3218031b018 | |
4548 | (do not change this comment) */ |