Commit | Line | Data |
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35692fe0 | 1 | /* Lisp functions pertaining to editing. |
64c60c2f | 2 | |
acaf905b | 3 | Copyright (C) 1985-1987, 1989, 1993-2012 Free Software Foundation, Inc. |
35692fe0 JB |
4 | |
5 | This file is part of GNU Emacs. | |
6 | ||
9ec0b715 | 7 | GNU Emacs is free software: you can redistribute it and/or modify |
35692fe0 | 8 | it under the terms of the GNU General Public License as published by |
9ec0b715 GM |
9 | the Free Software Foundation, either version 3 of the License, or |
10 | (at your option) any later version. | |
35692fe0 JB |
11 | |
12 | GNU Emacs is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
9ec0b715 | 18 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
35692fe0 JB |
19 | |
20 | ||
18160b98 | 21 | #include <config.h> |
68c45bf0 | 22 | #include <sys/types.h> |
3c14598c | 23 | #include <stdio.h> |
d7306fe6 | 24 | #include <setjmp.h> |
bfb61299 | 25 | |
5b9c0a1d | 26 | #ifdef HAVE_PWD_H |
35692fe0 | 27 | #include <pwd.h> |
bfb61299 JB |
28 | #endif |
29 | ||
dfcf069d | 30 | #include <unistd.h> |
dfcf069d | 31 | |
3bb9abc8 ST |
32 | #ifdef HAVE_SYS_UTSNAME_H |
33 | #include <sys/utsname.h> | |
34 | #endif | |
35 | ||
b17f9379 DN |
36 | #include "lisp.h" |
37 | ||
3c14598c EZ |
38 | /* systime.h includes <sys/time.h> which, on some systems, is required |
39 | for <sys/resource.h>; thus systime.h must be included before | |
40 | <sys/resource.h> */ | |
41 | #include "systime.h" | |
21acf124 ST |
42 | |
43 | #if defined HAVE_SYS_RESOURCE_H | |
4211ee7d | 44 | #include <sys/resource.h> |
e0f712ba AC |
45 | #endif |
46 | ||
409847a1 | 47 | #include <ctype.h> |
37910ab2 | 48 | #include <float.h> |
b8d9bd41 PE |
49 | #include <limits.h> |
50 | #include <intprops.h> | |
16c3e636 | 51 | #include <strftime.h> |
37910ab2 | 52 | #include <verify.h> |
409847a1 | 53 | |
74d6d8c5 | 54 | #include "intervals.h" |
35692fe0 | 55 | #include "buffer.h" |
40fbd254 | 56 | #include "character.h" |
68c45bf0 | 57 | #include "coding.h" |
0ae83348 | 58 | #include "frame.h" |
35692fe0 | 59 | #include "window.h" |
b91834c3 | 60 | #include "blockinput.h" |
35692fe0 | 61 | |
a03eaf1c RS |
62 | #ifndef NULL |
63 | #define NULL 0 | |
64 | #endif | |
65 | ||
d823c26b EZ |
66 | #ifndef USER_FULL_NAME |
67 | #define USER_FULL_NAME pw->pw_gecos | |
68 | #endif | |
69 | ||
f12ef5eb | 70 | #ifndef USE_CRT_DLL |
c59b5089 | 71 | extern char **environ; |
f12ef5eb AI |
72 | #endif |
73 | ||
aac18aa4 PE |
74 | #define TM_YEAR_BASE 1900 |
75 | ||
d65b4235 PE |
76 | /* Nonzero if TM_YEAR is a struct tm's tm_year value that causes |
77 | asctime to have well-defined behavior. */ | |
78 | #ifndef TM_YEAR_IN_ASCTIME_RANGE | |
79 | # define TM_YEAR_IN_ASCTIME_RANGE(tm_year) \ | |
80 | (1000 - TM_YEAR_BASE <= (tm_year) && (tm_year) <= 9999 - TM_YEAR_BASE) | |
81 | #endif | |
82 | ||
c433c134 | 83 | #ifdef WINDOWSNT |
361358ea | 84 | extern Lisp_Object w32_get_internal_run_time (void); |
c433c134 JR |
85 | #endif |
86 | ||
fe31d94c | 87 | static void time_overflow (void) NO_RETURN; |
7da0b018 PE |
88 | static Lisp_Object format_time_string (char const *, ptrdiff_t, Lisp_Object, |
89 | int, time_t *, struct tm **); | |
f57e2426 | 90 | static int tm_diff (struct tm *, struct tm *); |
29cdc13e | 91 | static void update_buffer_properties (EMACS_INT, EMACS_INT); |
260e2e2a | 92 | |
955cbe7b | 93 | static Lisp_Object Qbuffer_access_fontify_functions; |
cd64ea1d | 94 | static Lisp_Object Fuser_full_name (Lisp_Object); |
e3ed8469 | 95 | |
acb7cc89 GM |
96 | /* Symbol for the text property used to mark fields. */ |
97 | ||
98 | Lisp_Object Qfield; | |
99 | ||
100 | /* A special value for Qfield properties. */ | |
101 | ||
955cbe7b | 102 | static Lisp_Object Qboundary; |
acb7cc89 GM |
103 | |
104 | ||
35692fe0 | 105 | void |
971de7fb | 106 | init_editfns (void) |
35692fe0 | 107 | { |
63c5d10b | 108 | const char *user_name; |
e7f8264d | 109 | register char *p; |
35692fe0 | 110 | struct passwd *pw; /* password entry for the current user */ |
35692fe0 JB |
111 | Lisp_Object tem; |
112 | ||
113 | /* Set up system_name even when dumping. */ | |
ac988277 | 114 | init_system_name (); |
35692fe0 JB |
115 | |
116 | #ifndef CANNOT_DUMP | |
117 | /* Don't bother with this on initial start when just dumping out */ | |
118 | if (!initialized) | |
119 | return; | |
120 | #endif /* not CANNOT_DUMP */ | |
121 | ||
63c5d10b | 122 | pw = getpwuid (getuid ()); |
87485d6f MW |
123 | #ifdef MSDOS |
124 | /* We let the real user name default to "root" because that's quite | |
125 | accurate on MSDOG and because it lets Emacs find the init file. | |
126 | (The DVX libraries override the Djgpp libraries here.) */ | |
35b34f72 | 127 | Vuser_real_login_name = build_string (pw ? pw->pw_name : "root"); |
87485d6f | 128 | #else |
35b34f72 | 129 | Vuser_real_login_name = build_string (pw ? pw->pw_name : "unknown"); |
87485d6f | 130 | #endif |
35692fe0 | 131 | |
52b14ac0 JB |
132 | /* Get the effective user name, by consulting environment variables, |
133 | or the effective uid if those are unset. */ | |
63c5d10b | 134 | user_name = getenv ("LOGNAME"); |
35692fe0 | 135 | if (!user_name) |
4691c06d | 136 | #ifdef WINDOWSNT |
63c5d10b | 137 | user_name = getenv ("USERNAME"); /* it's USERNAME on NT */ |
4691c06d | 138 | #else /* WINDOWSNT */ |
63c5d10b | 139 | user_name = getenv ("USER"); |
4691c06d | 140 | #endif /* WINDOWSNT */ |
52b14ac0 JB |
141 | if (!user_name) |
142 | { | |
63c5d10b PE |
143 | pw = getpwuid (geteuid ()); |
144 | user_name = pw ? pw->pw_name : "unknown"; | |
52b14ac0 | 145 | } |
35b34f72 | 146 | Vuser_login_name = build_string (user_name); |
35692fe0 | 147 | |
52b14ac0 JB |
148 | /* If the user name claimed in the environment vars differs from |
149 | the real uid, use the claimed name to find the full name. */ | |
35b34f72 | 150 | tem = Fstring_equal (Vuser_login_name, Vuser_real_login_name); |
5e617bc2 | 151 | Vuser_full_name = Fuser_full_name (NILP (tem)? make_number (geteuid ()) |
3415b0e9 | 152 | : Vuser_login_name); |
34a7a267 | 153 | |
e7f8264d | 154 | p = getenv ("NAME"); |
9d36d071 RS |
155 | if (p) |
156 | Vuser_full_name = build_string (p); | |
3347526c RS |
157 | else if (NILP (Vuser_full_name)) |
158 | Vuser_full_name = build_string ("unknown"); | |
3bb9abc8 ST |
159 | |
160 | #ifdef HAVE_SYS_UTSNAME_H | |
161 | { | |
162 | struct utsname uts; | |
163 | uname (&uts); | |
164 | Voperating_system_release = build_string (uts.release); | |
165 | } | |
166 | #else | |
167 | Voperating_system_release = Qnil; | |
168 | #endif | |
35692fe0 JB |
169 | } |
170 | \f | |
a7ca3326 | 171 | DEFUN ("char-to-string", Fchar_to_string, Schar_to_string, 1, 1, 0, |
06283081 PJ |
172 | doc: /* Convert arg CHAR to a string containing that character. |
173 | usage: (char-to-string CHAR) */) | |
5842a27b | 174 | (Lisp_Object character) |
35692fe0 | 175 | { |
13bdea59 | 176 | int c, len; |
d5c2c403 | 177 | unsigned char str[MAX_MULTIBYTE_LENGTH]; |
fb8106e8 | 178 | |
1b9c91ed | 179 | CHECK_CHARACTER (character); |
13bdea59 | 180 | c = XFASTINT (character); |
35692fe0 | 181 | |
13bdea59 | 182 | len = CHAR_STRING (c, str); |
e7f8264d | 183 | return make_string_from_bytes ((char *) str, 1, len); |
35692fe0 JB |
184 | } |
185 | ||
c3bb441d | 186 | DEFUN ("byte-to-string", Fbyte_to_string, Sbyte_to_string, 1, 1, 0, |
35f1de62 | 187 | doc: /* Convert arg BYTE to a unibyte string containing that byte. */) |
5842a27b | 188 | (Lisp_Object byte) |
c3bb441d | 189 | { |
64c60c2f | 190 | unsigned char b; |
c3bb441d | 191 | CHECK_NUMBER (byte); |
35f1de62 CY |
192 | if (XINT (byte) < 0 || XINT (byte) > 255) |
193 | error ("Invalid byte"); | |
64c60c2f | 194 | b = XINT (byte); |
e7f8264d | 195 | return make_string_from_bytes ((char *) &b, 1, 1); |
c3bb441d SM |
196 | } |
197 | ||
35692fe0 | 198 | DEFUN ("string-to-char", Fstring_to_char, Sstring_to_char, 1, 1, 0, |
da4adb04 | 199 | doc: /* Return the first character in STRING. */) |
5842a27b | 200 | (register Lisp_Object string) |
35692fe0 JB |
201 | { |
202 | register Lisp_Object val; | |
b7826503 | 203 | CHECK_STRING (string); |
4e491f8d | 204 | if (SCHARS (string)) |
d9d851ea KH |
205 | { |
206 | if (STRING_MULTIBYTE (string)) | |
62a6e103 | 207 | XSETFASTINT (val, STRING_CHAR (SDATA (string))); |
d9d851ea | 208 | else |
4e491f8d | 209 | XSETFASTINT (val, SREF (string, 0)); |
d9d851ea | 210 | } |
35692fe0 | 211 | else |
55561c63 | 212 | XSETFASTINT (val, 0); |
35692fe0 JB |
213 | return val; |
214 | } | |
215 | \f | |
216 | static Lisp_Object | |
29cdc13e | 217 | buildmark (EMACS_INT charpos, EMACS_INT bytepos) |
35692fe0 JB |
218 | { |
219 | register Lisp_Object mark; | |
220 | mark = Fmake_marker (); | |
ec1c14f6 | 221 | set_marker_both (mark, Qnil, charpos, bytepos); |
35692fe0 JB |
222 | return mark; |
223 | } | |
224 | ||
a7ca3326 | 225 | DEFUN ("point", Fpoint, Spoint, 0, 0, 0, |
7ee72033 MB |
226 | doc: /* Return value of point, as an integer. |
227 | Beginning of buffer is position (point-min). */) | |
5842a27b | 228 | (void) |
35692fe0 JB |
229 | { |
230 | Lisp_Object temp; | |
6ec8bbd2 | 231 | XSETFASTINT (temp, PT); |
35692fe0 JB |
232 | return temp; |
233 | } | |
234 | ||
a7ca3326 | 235 | DEFUN ("point-marker", Fpoint_marker, Spoint_marker, 0, 0, 0, |
7ee72033 | 236 | doc: /* Return value of point, as a marker object. */) |
5842a27b | 237 | (void) |
35692fe0 | 238 | { |
ec1c14f6 | 239 | return buildmark (PT, PT_BYTE); |
35692fe0 JB |
240 | } |
241 | ||
fe3537c3 | 242 | EMACS_INT |
29cdc13e | 243 | clip_to_bounds (EMACS_INT lower, EMACS_INT num, EMACS_INT upper) |
35692fe0 JB |
244 | { |
245 | if (num < lower) | |
246 | return lower; | |
247 | else if (num > upper) | |
248 | return upper; | |
249 | else | |
250 | return num; | |
251 | } | |
252 | ||
a7ca3326 | 253 | DEFUN ("goto-char", Fgoto_char, Sgoto_char, 1, 1, "NGoto char: ", |
7ee72033 | 254 | doc: /* Set point to POSITION, a number or marker. |
8696b557 EZ |
255 | Beginning of buffer is position (point-min), end is (point-max). |
256 | ||
257 | The return value is POSITION. */) | |
5842a27b | 258 | (register Lisp_Object position) |
35692fe0 | 259 | { |
29cdc13e | 260 | EMACS_INT pos; |
fb8106e8 | 261 | |
72ef82ec RS |
262 | if (MARKERP (position) |
263 | && current_buffer == XMARKER (position)->buffer) | |
ec1c14f6 RS |
264 | { |
265 | pos = marker_position (position); | |
266 | if (pos < BEGV) | |
267 | SET_PT_BOTH (BEGV, BEGV_BYTE); | |
268 | else if (pos > ZV) | |
269 | SET_PT_BOTH (ZV, ZV_BYTE); | |
270 | else | |
271 | SET_PT_BOTH (pos, marker_byte_position (position)); | |
272 | ||
273 | return position; | |
274 | } | |
275 | ||
b7826503 | 276 | CHECK_NUMBER_COERCE_MARKER (position); |
35692fe0 | 277 | |
fb8106e8 | 278 | pos = clip_to_bounds (BEGV, XINT (position), ZV); |
fb8106e8 | 279 | SET_PT (pos); |
2591ec64 | 280 | return position; |
35692fe0 JB |
281 | } |
282 | ||
acb7cc89 GM |
283 | |
284 | /* Return the start or end position of the region. | |
285 | BEGINNINGP non-zero means return the start. | |
286 | If there is no region active, signal an error. */ | |
287 | ||
35692fe0 | 288 | static Lisp_Object |
971de7fb | 289 | region_limit (int beginningp) |
35692fe0 | 290 | { |
acb7cc89 | 291 | Lisp_Object m; |
177c0ea7 | 292 | |
acb7cc89 GM |
293 | if (!NILP (Vtransient_mark_mode) |
294 | && NILP (Vmark_even_if_inactive) | |
4b4deea2 | 295 | && NILP (BVAR (current_buffer, mark_active))) |
8a0ff744 | 296 | xsignal0 (Qmark_inactive); |
177c0ea7 | 297 | |
4b4deea2 | 298 | m = Fmarker_position (BVAR (current_buffer, mark)); |
acb7cc89 | 299 | if (NILP (m)) |
7b5ad687 | 300 | error ("The mark is not set now, so there is no region"); |
177c0ea7 | 301 | |
f555f8cf | 302 | if ((PT < XFASTINT (m)) == (beginningp != 0)) |
acb7cc89 GM |
303 | m = make_number (PT); |
304 | return m; | |
35692fe0 JB |
305 | } |
306 | ||
307 | DEFUN ("region-beginning", Fregion_beginning, Sregion_beginning, 0, 0, 0, | |
7b0815ba | 308 | doc: /* Return the integer value of point or mark, whichever is smaller. */) |
5842a27b | 309 | (void) |
35692fe0 | 310 | { |
acb7cc89 | 311 | return region_limit (1); |
35692fe0 JB |
312 | } |
313 | ||
314 | DEFUN ("region-end", Fregion_end, Sregion_end, 0, 0, 0, | |
7b0815ba | 315 | doc: /* Return the integer value of point or mark, whichever is larger. */) |
5842a27b | 316 | (void) |
35692fe0 | 317 | { |
acb7cc89 | 318 | return region_limit (0); |
35692fe0 JB |
319 | } |
320 | ||
35692fe0 | 321 | DEFUN ("mark-marker", Fmark_marker, Smark_marker, 0, 0, 0, |
7ee72033 | 322 | doc: /* Return this buffer's mark, as a marker object. |
a1f17501 | 323 | Watch out! Moving this marker changes the mark position. |
7ee72033 | 324 | If you set the marker not to point anywhere, the buffer will have no mark. */) |
5842a27b | 325 | (void) |
35692fe0 | 326 | { |
4b4deea2 | 327 | return BVAR (current_buffer, mark); |
35692fe0 | 328 | } |
acb7cc89 | 329 | |
c9ed721d | 330 | \f |
58401a34 SM |
331 | /* Find all the overlays in the current buffer that touch position POS. |
332 | Return the number found, and store them in a vector in VEC | |
333 | of length LEN. */ | |
334 | ||
b081724f PE |
335 | static ptrdiff_t |
336 | overlays_around (EMACS_INT pos, Lisp_Object *vec, ptrdiff_t len) | |
58401a34 | 337 | { |
88006f77 SM |
338 | Lisp_Object overlay, start, end; |
339 | struct Lisp_Overlay *tail; | |
29cdc13e | 340 | EMACS_INT startpos, endpos; |
b081724f | 341 | ptrdiff_t idx = 0; |
58401a34 | 342 | |
88006f77 | 343 | for (tail = current_buffer->overlays_before; tail; tail = tail->next) |
58401a34 | 344 | { |
88006f77 | 345 | XSETMISC (overlay, tail); |
58401a34 SM |
346 | |
347 | end = OVERLAY_END (overlay); | |
348 | endpos = OVERLAY_POSITION (end); | |
349 | if (endpos < pos) | |
350 | break; | |
351 | start = OVERLAY_START (overlay); | |
352 | startpos = OVERLAY_POSITION (start); | |
353 | if (startpos <= pos) | |
354 | { | |
355 | if (idx < len) | |
356 | vec[idx] = overlay; | |
357 | /* Keep counting overlays even if we can't return them all. */ | |
358 | idx++; | |
359 | } | |
360 | } | |
361 | ||
88006f77 | 362 | for (tail = current_buffer->overlays_after; tail; tail = tail->next) |
58401a34 | 363 | { |
88006f77 | 364 | XSETMISC (overlay, tail); |
58401a34 SM |
365 | |
366 | start = OVERLAY_START (overlay); | |
367 | startpos = OVERLAY_POSITION (start); | |
368 | if (pos < startpos) | |
369 | break; | |
370 | end = OVERLAY_END (overlay); | |
371 | endpos = OVERLAY_POSITION (end); | |
372 | if (pos <= endpos) | |
373 | { | |
374 | if (idx < len) | |
375 | vec[idx] = overlay; | |
376 | idx++; | |
377 | } | |
378 | } | |
379 | ||
380 | return idx; | |
381 | } | |
382 | ||
383 | /* Return the value of property PROP, in OBJECT at POSITION. | |
384 | It's the value of PROP that a char inserted at POSITION would get. | |
385 | OBJECT is optional and defaults to the current buffer. | |
386 | If OBJECT is a buffer, then overlay properties are considered as well as | |
387 | text properties. | |
388 | If OBJECT is a window, then that window's buffer is used, but | |
389 | window-specific overlays are considered only if they are associated | |
390 | with OBJECT. */ | |
538f9462 | 391 | Lisp_Object |
971de7fb | 392 | get_pos_property (Lisp_Object position, register Lisp_Object prop, Lisp_Object object) |
58401a34 | 393 | { |
58401a34 SM |
394 | CHECK_NUMBER_COERCE_MARKER (position); |
395 | ||
396 | if (NILP (object)) | |
397 | XSETBUFFER (object, current_buffer); | |
dfe6cbf8 SM |
398 | else if (WINDOWP (object)) |
399 | object = XWINDOW (object)->buffer; | |
400 | ||
401 | if (!BUFFERP (object)) | |
402 | /* pos-property only makes sense in buffers right now, since strings | |
403 | have no overlays and no notion of insertion for which stickiness | |
404 | could be obeyed. */ | |
405 | return Fget_text_property (position, prop, object); | |
406 | else | |
58401a34 | 407 | { |
29cdc13e | 408 | EMACS_INT posn = XINT (position); |
b081724f | 409 | ptrdiff_t noverlays; |
58401a34 SM |
410 | Lisp_Object *overlay_vec, tem; |
411 | struct buffer *obuf = current_buffer; | |
412 | ||
413 | set_buffer_temp (XBUFFER (object)); | |
414 | ||
415 | /* First try with room for 40 overlays. */ | |
416 | noverlays = 40; | |
417 | overlay_vec = (Lisp_Object *) alloca (noverlays * sizeof (Lisp_Object)); | |
418 | noverlays = overlays_around (posn, overlay_vec, noverlays); | |
419 | ||
420 | /* If there are more than 40, | |
421 | make enough space for all, and try again. */ | |
422 | if (noverlays > 40) | |
423 | { | |
424 | overlay_vec = (Lisp_Object *) alloca (noverlays * sizeof (Lisp_Object)); | |
425 | noverlays = overlays_around (posn, overlay_vec, noverlays); | |
426 | } | |
427 | noverlays = sort_overlays (overlay_vec, noverlays, NULL); | |
428 | ||
429 | set_buffer_temp (obuf); | |
430 | ||
431 | /* Now check the overlays in order of decreasing priority. */ | |
432 | while (--noverlays >= 0) | |
433 | { | |
434 | Lisp_Object ol = overlay_vec[noverlays]; | |
435 | tem = Foverlay_get (ol, prop); | |
436 | if (!NILP (tem)) | |
437 | { | |
438 | /* Check the overlay is indeed active at point. */ | |
439 | Lisp_Object start = OVERLAY_START (ol), finish = OVERLAY_END (ol); | |
440 | if ((OVERLAY_POSITION (start) == posn | |
441 | && XMARKER (start)->insertion_type == 1) | |
442 | || (OVERLAY_POSITION (finish) == posn | |
443 | && XMARKER (finish)->insertion_type == 0)) | |
444 | ; /* The overlay will not cover a char inserted at point. */ | |
445 | else | |
446 | { | |
447 | return tem; | |
448 | } | |
449 | } | |
450 | } | |
177c0ea7 | 451 | |
7a6a86ad | 452 | { /* Now check the text properties. */ |
dfe6cbf8 SM |
453 | int stickiness = text_property_stickiness (prop, position, object); |
454 | if (stickiness > 0) | |
455 | return Fget_text_property (position, prop, object); | |
456 | else if (stickiness < 0 | |
457 | && XINT (position) > BUF_BEGV (XBUFFER (object))) | |
458 | return Fget_text_property (make_number (XINT (position) - 1), | |
459 | prop, object); | |
460 | else | |
461 | return Qnil; | |
462 | } | |
58401a34 | 463 | } |
58401a34 SM |
464 | } |
465 | ||
a3caef99 | 466 | /* Find the field surrounding POS in *BEG and *END. If POS is nil, |
59062dce | 467 | the value of point is used instead. If BEG or END is null, |
acb7cc89 | 468 | means don't store the beginning or end of the field. |
a3caef99 | 469 | |
9ac741c5 MB |
470 | BEG_LIMIT and END_LIMIT serve to limit the ranged of the returned |
471 | results; they do not effect boundary behavior. | |
472 | ||
a3caef99 | 473 | If MERGE_AT_BOUNDARY is nonzero, then if POS is at the very first |
ee547125 MB |
474 | position of a field, then the beginning of the previous field is |
475 | returned instead of the beginning of POS's field (since the end of a | |
476 | field is actually also the beginning of the next input field, this | |
477 | behavior is sometimes useful). Additionally in the MERGE_AT_BOUNDARY | |
478 | true case, if two fields are separated by a field with the special | |
479 | value `boundary', and POS lies within it, then the two separated | |
480 | fields are considered to be adjacent, and POS between them, when | |
481 | finding the beginning and ending of the "merged" field. | |
a3caef99 RS |
482 | |
483 | Either BEG or END may be 0, in which case the corresponding value | |
484 | is not stored. */ | |
485 | ||
acb7cc89 | 486 | static void |
413d18e7 EZ |
487 | find_field (Lisp_Object pos, Lisp_Object merge_at_boundary, |
488 | Lisp_Object beg_limit, | |
489 | EMACS_INT *beg, Lisp_Object end_limit, EMACS_INT *end) | |
0daf6e8d | 490 | { |
ee547125 MB |
491 | /* Fields right before and after the point. */ |
492 | Lisp_Object before_field, after_field; | |
a3caef99 RS |
493 | /* 1 if POS counts as the start of a field. */ |
494 | int at_field_start = 0; | |
495 | /* 1 if POS counts as the end of a field. */ | |
496 | int at_field_end = 0; | |
ee547125 | 497 | |
0daf6e8d GM |
498 | if (NILP (pos)) |
499 | XSETFASTINT (pos, PT); | |
500 | else | |
b7826503 | 501 | CHECK_NUMBER_COERCE_MARKER (pos); |
0daf6e8d | 502 | |
acb7cc89 | 503 | after_field |
58401a34 | 504 | = get_char_property_and_overlay (pos, Qfield, Qnil, NULL); |
acb7cc89 GM |
505 | before_field |
506 | = (XFASTINT (pos) > BEGV | |
7ae1c032 | 507 | ? get_char_property_and_overlay (make_number (XINT (pos) - 1), |
58401a34 | 508 | Qfield, Qnil, NULL) |
e477bb04 KL |
509 | /* Using nil here would be a more obvious choice, but it would |
510 | fail when the buffer starts with a non-sticky field. */ | |
511 | : after_field); | |
ee547125 MB |
512 | |
513 | /* See if we need to handle the case where MERGE_AT_BOUNDARY is nil | |
514 | and POS is at beginning of a field, which can also be interpreted | |
515 | as the end of the previous field. Note that the case where if | |
516 | MERGE_AT_BOUNDARY is non-nil (see function comment) is actually the | |
517 | more natural one; then we avoid treating the beginning of a field | |
518 | specially. */ | |
58401a34 | 519 | if (NILP (merge_at_boundary)) |
ee547125 | 520 | { |
58401a34 SM |
521 | Lisp_Object field = get_pos_property (pos, Qfield, Qnil); |
522 | if (!EQ (field, after_field)) | |
ee547125 | 523 | at_field_end = 1; |
58401a34 SM |
524 | if (!EQ (field, before_field)) |
525 | at_field_start = 1; | |
2db1186a SM |
526 | if (NILP (field) && at_field_start && at_field_end) |
527 | /* If an inserted char would have a nil field while the surrounding | |
528 | text is non-nil, we're probably not looking at a | |
529 | zero-length field, but instead at a non-nil field that's | |
530 | not intended for editing (such as comint's prompts). */ | |
531 | at_field_end = at_field_start = 0; | |
0daf6e8d GM |
532 | } |
533 | ||
ee547125 MB |
534 | /* Note about special `boundary' fields: |
535 | ||
536 | Consider the case where the point (`.') is between the fields `x' and `y': | |
537 | ||
538 | xxxx.yyyy | |
539 | ||
540 | In this situation, if merge_at_boundary is true, we consider the | |
541 | `x' and `y' fields as forming one big merged field, and so the end | |
542 | of the field is the end of `y'. | |
543 | ||
544 | However, if `x' and `y' are separated by a special `boundary' field | |
545 | (a field with a `field' char-property of 'boundary), then we ignore | |
546 | this special field when merging adjacent fields. Here's the same | |
547 | situation, but with a `boundary' field between the `x' and `y' fields: | |
548 | ||
549 | xxx.BBBByyyy | |
550 | ||
551 | Here, if point is at the end of `x', the beginning of `y', or | |
552 | anywhere in-between (within the `boundary' field), we merge all | |
553 | three fields and consider the beginning as being the beginning of | |
554 | the `x' field, and the end as being the end of the `y' field. */ | |
555 | ||
0daf6e8d | 556 | if (beg) |
acb7cc89 GM |
557 | { |
558 | if (at_field_start) | |
559 | /* POS is at the edge of a field, and we should consider it as | |
560 | the beginning of the following field. */ | |
561 | *beg = XFASTINT (pos); | |
562 | else | |
563 | /* Find the previous field boundary. */ | |
564 | { | |
58401a34 | 565 | Lisp_Object p = pos; |
acb7cc89 GM |
566 | if (!NILP (merge_at_boundary) && EQ (before_field, Qboundary)) |
567 | /* Skip a `boundary' field. */ | |
58401a34 | 568 | p = Fprevious_single_char_property_change (p, Qfield, Qnil, |
9ac741c5 | 569 | beg_limit); |
58401a34 SM |
570 | |
571 | p = Fprevious_single_char_property_change (p, Qfield, Qnil, | |
572 | beg_limit); | |
573 | *beg = NILP (p) ? BEGV : XFASTINT (p); | |
acb7cc89 GM |
574 | } |
575 | } | |
0daf6e8d GM |
576 | |
577 | if (end) | |
acb7cc89 GM |
578 | { |
579 | if (at_field_end) | |
580 | /* POS is at the edge of a field, and we should consider it as | |
581 | the end of the previous field. */ | |
582 | *end = XFASTINT (pos); | |
583 | else | |
584 | /* Find the next field boundary. */ | |
585 | { | |
586 | if (!NILP (merge_at_boundary) && EQ (after_field, Qboundary)) | |
587 | /* Skip a `boundary' field. */ | |
9ac741c5 MB |
588 | pos = Fnext_single_char_property_change (pos, Qfield, Qnil, |
589 | end_limit); | |
ee547125 | 590 | |
9ac741c5 MB |
591 | pos = Fnext_single_char_property_change (pos, Qfield, Qnil, |
592 | end_limit); | |
acb7cc89 GM |
593 | *end = NILP (pos) ? ZV : XFASTINT (pos); |
594 | } | |
595 | } | |
0daf6e8d | 596 | } |
acb7cc89 | 597 | |
0daf6e8d | 598 | \f |
d01f3570 | 599 | DEFUN ("delete-field", Fdelete_field, Sdelete_field, 0, 1, 0, |
7ee72033 | 600 | doc: /* Delete the field surrounding POS. |
a1f17501 | 601 | A field is a region of text with the same `field' property. |
f554db0f | 602 | If POS is nil, the value of point is used for POS. */) |
5842a27b | 603 | (Lisp_Object pos) |
0daf6e8d | 604 | { |
413d18e7 | 605 | EMACS_INT beg, end; |
9ac741c5 | 606 | find_field (pos, Qnil, Qnil, &beg, Qnil, &end); |
0daf6e8d GM |
607 | if (beg != end) |
608 | del_range (beg, end); | |
d01f3570 | 609 | return Qnil; |
0daf6e8d GM |
610 | } |
611 | ||
612 | DEFUN ("field-string", Ffield_string, Sfield_string, 0, 1, 0, | |
7ee72033 | 613 | doc: /* Return the contents of the field surrounding POS as a string. |
a1f17501 | 614 | A field is a region of text with the same `field' property. |
f554db0f | 615 | If POS is nil, the value of point is used for POS. */) |
5842a27b | 616 | (Lisp_Object pos) |
0daf6e8d | 617 | { |
413d18e7 | 618 | EMACS_INT beg, end; |
9ac741c5 | 619 | find_field (pos, Qnil, Qnil, &beg, Qnil, &end); |
0daf6e8d GM |
620 | return make_buffer_string (beg, end, 1); |
621 | } | |
622 | ||
623 | DEFUN ("field-string-no-properties", Ffield_string_no_properties, Sfield_string_no_properties, 0, 1, 0, | |
7a6a86ad | 624 | doc: /* Return the contents of the field around POS, without text properties. |
a1f17501 | 625 | A field is a region of text with the same `field' property. |
f554db0f | 626 | If POS is nil, the value of point is used for POS. */) |
5842a27b | 627 | (Lisp_Object pos) |
0daf6e8d | 628 | { |
413d18e7 | 629 | EMACS_INT beg, end; |
9ac741c5 | 630 | find_field (pos, Qnil, Qnil, &beg, Qnil, &end); |
0daf6e8d GM |
631 | return make_buffer_string (beg, end, 0); |
632 | } | |
633 | ||
9ac741c5 | 634 | DEFUN ("field-beginning", Ffield_beginning, Sfield_beginning, 0, 3, 0, |
7ee72033 | 635 | doc: /* Return the beginning of the field surrounding POS. |
a1f17501 PJ |
636 | A field is a region of text with the same `field' property. |
637 | If POS is nil, the value of point is used for POS. | |
638 | If ESCAPE-FROM-EDGE is non-nil and POS is at the beginning of its | |
9ac741c5 MB |
639 | field, then the beginning of the *previous* field is returned. |
640 | If LIMIT is non-nil, it is a buffer position; if the beginning of the field | |
f554db0f | 641 | is before LIMIT, then LIMIT will be returned instead. */) |
5842a27b | 642 | (Lisp_Object pos, Lisp_Object escape_from_edge, Lisp_Object limit) |
0daf6e8d | 643 | { |
413d18e7 | 644 | EMACS_INT beg; |
9ac741c5 | 645 | find_field (pos, escape_from_edge, limit, &beg, Qnil, 0); |
0daf6e8d GM |
646 | return make_number (beg); |
647 | } | |
648 | ||
a7ca3326 | 649 | DEFUN ("field-end", Ffield_end, Sfield_end, 0, 3, 0, |
7ee72033 | 650 | doc: /* Return the end of the field surrounding POS. |
a1f17501 PJ |
651 | A field is a region of text with the same `field' property. |
652 | If POS is nil, the value of point is used for POS. | |
653 | If ESCAPE-FROM-EDGE is non-nil and POS is at the end of its field, | |
9ac741c5 MB |
654 | then the end of the *following* field is returned. |
655 | If LIMIT is non-nil, it is a buffer position; if the end of the field | |
f554db0f | 656 | is after LIMIT, then LIMIT will be returned instead. */) |
5842a27b | 657 | (Lisp_Object pos, Lisp_Object escape_from_edge, Lisp_Object limit) |
0daf6e8d | 658 | { |
413d18e7 | 659 | EMACS_INT end; |
9ac741c5 | 660 | find_field (pos, escape_from_edge, Qnil, 0, limit, &end); |
0daf6e8d GM |
661 | return make_number (end); |
662 | } | |
663 | ||
a7ca3326 | 664 | DEFUN ("constrain-to-field", Fconstrain_to_field, Sconstrain_to_field, 2, 5, 0, |
7ee72033 | 665 | doc: /* Return the position closest to NEW-POS that is in the same field as OLD-POS. |
a1f17501 PJ |
666 | |
667 | A field is a region of text with the same `field' property. | |
668 | If NEW-POS is nil, then the current point is used instead, and set to the | |
669 | constrained position if that is different. | |
670 | ||
671 | If OLD-POS is at the boundary of two fields, then the allowable | |
672 | positions for NEW-POS depends on the value of the optional argument | |
673 | ESCAPE-FROM-EDGE: If ESCAPE-FROM-EDGE is nil, then NEW-POS is | |
674 | constrained to the field that has the same `field' char-property | |
675 | as any new characters inserted at OLD-POS, whereas if ESCAPE-FROM-EDGE | |
676 | is non-nil, NEW-POS is constrained to the union of the two adjacent | |
677 | fields. Additionally, if two fields are separated by another field with | |
678 | the special value `boundary', then any point within this special field is | |
679 | also considered to be `on the boundary'. | |
680 | ||
681 | If the optional argument ONLY-IN-LINE is non-nil and constraining | |
682 | NEW-POS would move it to a different line, NEW-POS is returned | |
683 | unconstrained. This useful for commands that move by line, like | |
684 | \\[next-line] or \\[beginning-of-line], which should generally respect field boundaries | |
685 | only in the case where they can still move to the right line. | |
686 | ||
687 | If the optional argument INHIBIT-CAPTURE-PROPERTY is non-nil, and OLD-POS has | |
688 | a non-nil property of that name, then any field boundaries are ignored. | |
689 | ||
7ee72033 | 690 | Field boundaries are not noticed if `inhibit-field-text-motion' is non-nil. */) |
5842a27b | 691 | (Lisp_Object new_pos, Lisp_Object old_pos, Lisp_Object escape_from_edge, Lisp_Object only_in_line, Lisp_Object inhibit_capture_property) |
0daf6e8d GM |
692 | { |
693 | /* If non-zero, then the original point, before re-positioning. */ | |
29cdc13e | 694 | EMACS_INT orig_point = 0; |
d63b4018 KR |
695 | int fwd; |
696 | Lisp_Object prev_old, prev_new; | |
aac18aa4 | 697 | |
0daf6e8d GM |
698 | if (NILP (new_pos)) |
699 | /* Use the current point, and afterwards, set it. */ | |
700 | { | |
701 | orig_point = PT; | |
702 | XSETFASTINT (new_pos, PT); | |
703 | } | |
704 | ||
e477bb04 KL |
705 | CHECK_NUMBER_COERCE_MARKER (new_pos); |
706 | CHECK_NUMBER_COERCE_MARKER (old_pos); | |
707 | ||
708 | fwd = (XFASTINT (new_pos) > XFASTINT (old_pos)); | |
709 | ||
710 | prev_old = make_number (XFASTINT (old_pos) - 1); | |
711 | prev_new = make_number (XFASTINT (new_pos) - 1); | |
aac18aa4 | 712 | |
ee5cd4db GM |
713 | if (NILP (Vinhibit_field_text_motion) |
714 | && !EQ (new_pos, old_pos) | |
42ab8e36 MB |
715 | && (!NILP (Fget_char_property (new_pos, Qfield, Qnil)) |
716 | || !NILP (Fget_char_property (old_pos, Qfield, Qnil)) | |
e477bb04 KL |
717 | /* To recognize field boundaries, we must also look at the |
718 | previous positions; we could use `get_pos_property' | |
719 | instead, but in itself that would fail inside non-sticky | |
720 | fields (like comint prompts). */ | |
721 | || (XFASTINT (new_pos) > BEGV | |
42ab8e36 | 722 | && !NILP (Fget_char_property (prev_new, Qfield, Qnil))) |
e477bb04 | 723 | || (XFASTINT (old_pos) > BEGV |
42ab8e36 | 724 | && !NILP (Fget_char_property (prev_old, Qfield, Qnil)))) |
ee547125 | 725 | && (NILP (inhibit_capture_property) |
e477bb04 KL |
726 | /* Field boundaries are again a problem; but now we must |
727 | decide the case exactly, so we need to call | |
728 | `get_pos_property' as well. */ | |
729 | || (NILP (get_pos_property (old_pos, inhibit_capture_property, Qnil)) | |
730 | && (XFASTINT (old_pos) <= BEGV | |
42ab8e36 MB |
731 | || NILP (Fget_char_property (old_pos, inhibit_capture_property, Qnil)) |
732 | || NILP (Fget_char_property (prev_old, inhibit_capture_property, Qnil)))))) | |
2cb3aec4 KL |
733 | /* It is possible that NEW_POS is not within the same field as |
734 | OLD_POS; try to move NEW_POS so that it is. */ | |
0daf6e8d | 735 | { |
a53e2e89 | 736 | EMACS_INT shortage; |
0daf6e8d GM |
737 | Lisp_Object field_bound; |
738 | ||
0daf6e8d | 739 | if (fwd) |
9ac741c5 | 740 | field_bound = Ffield_end (old_pos, escape_from_edge, new_pos); |
0daf6e8d | 741 | else |
9ac741c5 | 742 | field_bound = Ffield_beginning (old_pos, escape_from_edge, new_pos); |
0daf6e8d | 743 | |
10b0f752 MB |
744 | if (/* See if ESCAPE_FROM_EDGE caused FIELD_BOUND to jump to the |
745 | other side of NEW_POS, which would mean that NEW_POS is | |
746 | already acceptable, and it's not necessary to constrain it | |
747 | to FIELD_BOUND. */ | |
748 | ((XFASTINT (field_bound) < XFASTINT (new_pos)) ? fwd : !fwd) | |
749 | /* NEW_POS should be constrained, but only if either | |
750 | ONLY_IN_LINE is nil (in which case any constraint is OK), | |
751 | or NEW_POS and FIELD_BOUND are on the same line (in which | |
752 | case the constraint is OK even if ONLY_IN_LINE is non-nil). */ | |
753 | && (NILP (only_in_line) | |
754 | /* This is the ONLY_IN_LINE case, check that NEW_POS and | |
755 | FIELD_BOUND are on the same line by seeing whether | |
756 | there's an intervening newline or not. */ | |
757 | || (scan_buffer ('\n', | |
758 | XFASTINT (new_pos), XFASTINT (field_bound), | |
759 | fwd ? -1 : 1, &shortage, 1), | |
760 | shortage != 0))) | |
0daf6e8d GM |
761 | /* Constrain NEW_POS to FIELD_BOUND. */ |
762 | new_pos = field_bound; | |
763 | ||
764 | if (orig_point && XFASTINT (new_pos) != orig_point) | |
765 | /* The NEW_POS argument was originally nil, so automatically set PT. */ | |
766 | SET_PT (XFASTINT (new_pos)); | |
767 | } | |
768 | ||
769 | return new_pos; | |
770 | } | |
acb7cc89 | 771 | |
0daf6e8d | 772 | \f |
a7ca3326 | 773 | DEFUN ("line-beginning-position", |
6d57c318 | 774 | Fline_beginning_position, Sline_beginning_position, 0, 1, 0, |
7ee72033 | 775 | doc: /* Return the character position of the first character on the current line. |
a1f17501 PJ |
776 | With argument N not nil or 1, move forward N - 1 lines first. |
777 | If scan reaches end of buffer, return that position. | |
6d57c318 | 778 | |
cd21226d EZ |
779 | The returned position is of the first character in the logical order, |
780 | i.e. the one that has the smallest character position. | |
781 | ||
2cb3aec4 KL |
782 | This function constrains the returned position to the current field |
783 | unless that would be on a different line than the original, | |
784 | unconstrained result. If N is nil or 1, and a front-sticky field | |
785 | starts at point, the scan stops as soon as it starts. To ignore field | |
6d57c318 | 786 | boundaries bind `inhibit-field-text-motion' to t. |
a1f17501 | 787 | |
7ee72033 | 788 | This function does not move point. */) |
5842a27b | 789 | (Lisp_Object n) |
c9ed721d | 790 | { |
29cdc13e | 791 | EMACS_INT orig, orig_byte, end; |
4e8f005c CY |
792 | int count = SPECPDL_INDEX (); |
793 | specbind (Qinhibit_point_motion_hooks, Qt); | |
c9ed721d RS |
794 | |
795 | if (NILP (n)) | |
796 | XSETFASTINT (n, 1); | |
797 | else | |
b7826503 | 798 | CHECK_NUMBER (n); |
c9ed721d RS |
799 | |
800 | orig = PT; | |
ec1c14f6 | 801 | orig_byte = PT_BYTE; |
c9ed721d RS |
802 | Fforward_line (make_number (XINT (n) - 1)); |
803 | end = PT; | |
e2dae3f2 | 804 | |
ec1c14f6 | 805 | SET_PT_BOTH (orig, orig_byte); |
35692fe0 | 806 | |
4e8f005c CY |
807 | unbind_to (count, Qnil); |
808 | ||
0daf6e8d | 809 | /* Return END constrained to the current input field. */ |
ee5cd4db GM |
810 | return Fconstrain_to_field (make_number (end), make_number (orig), |
811 | XINT (n) != 1 ? Qt : Qnil, | |
ee547125 | 812 | Qt, Qnil); |
c9ed721d RS |
813 | } |
814 | ||
a7ca3326 | 815 | DEFUN ("line-end-position", Fline_end_position, Sline_end_position, 0, 1, 0, |
7ee72033 | 816 | doc: /* Return the character position of the last character on the current line. |
a1f17501 PJ |
817 | With argument N not nil or 1, move forward N - 1 lines first. |
818 | If scan reaches end of buffer, return that position. | |
6d57c318 | 819 | |
cd21226d EZ |
820 | The returned position is of the last character in the logical order, |
821 | i.e. the character whose buffer position is the largest one. | |
822 | ||
2cb3aec4 KL |
823 | This function constrains the returned position to the current field |
824 | unless that would be on a different line than the original, | |
825 | unconstrained result. If N is nil or 1, and a rear-sticky field ends | |
826 | at point, the scan stops as soon as it starts. To ignore field | |
6d57c318 MB |
827 | boundaries bind `inhibit-field-text-motion' to t. |
828 | ||
7ee72033 | 829 | This function does not move point. */) |
5842a27b | 830 | (Lisp_Object n) |
c9ed721d | 831 | { |
29cdc13e EZ |
832 | EMACS_INT end_pos; |
833 | EMACS_INT orig = PT; | |
0daf6e8d | 834 | |
c9ed721d RS |
835 | if (NILP (n)) |
836 | XSETFASTINT (n, 1); | |
837 | else | |
b7826503 | 838 | CHECK_NUMBER (n); |
c9ed721d | 839 | |
0daf6e8d GM |
840 | end_pos = find_before_next_newline (orig, 0, XINT (n) - (XINT (n) <= 0)); |
841 | ||
842 | /* Return END_POS constrained to the current input field. */ | |
ee5cd4db | 843 | return Fconstrain_to_field (make_number (end_pos), make_number (orig), |
ee547125 | 844 | Qnil, Qt, Qnil); |
c9ed721d | 845 | } |
6d57c318 | 846 | |
c9ed721d | 847 | \f |
35692fe0 | 848 | Lisp_Object |
971de7fb | 849 | save_excursion_save (void) |
35692fe0 | 850 | { |
acb7cc89 GM |
851 | int visible = (XBUFFER (XWINDOW (selected_window)->buffer) |
852 | == current_buffer); | |
35692fe0 JB |
853 | |
854 | return Fcons (Fpoint_marker (), | |
4b4deea2 | 855 | Fcons (Fcopy_marker (BVAR (current_buffer, mark), Qnil), |
9772455e | 856 | Fcons (visible ? Qt : Qnil, |
4b4deea2 | 857 | Fcons (BVAR (current_buffer, mark_active), |
2483cf58 | 858 | selected_window)))); |
35692fe0 JB |
859 | } |
860 | ||
861 | Lisp_Object | |
971de7fb | 862 | save_excursion_restore (Lisp_Object info) |
35692fe0 | 863 | { |
4ad8681a RS |
864 | Lisp_Object tem, tem1, omark, nmark; |
865 | struct gcpro gcpro1, gcpro2, gcpro3; | |
2483cf58 | 866 | int visible_p; |
35692fe0 | 867 | |
2483cf58 | 868 | tem = Fmarker_buffer (XCAR (info)); |
35692fe0 JB |
869 | /* If buffer being returned to is now deleted, avoid error */ |
870 | /* Otherwise could get error here while unwinding to top level | |
871 | and crash */ | |
872 | /* In that case, Fmarker_buffer returns nil now. */ | |
56a98455 | 873 | if (NILP (tem)) |
35692fe0 | 874 | return Qnil; |
4ad8681a RS |
875 | |
876 | omark = nmark = Qnil; | |
877 | GCPRO3 (info, omark, nmark); | |
878 | ||
35692fe0 | 879 | Fset_buffer (tem); |
2483cf58 GM |
880 | |
881 | /* Point marker. */ | |
882 | tem = XCAR (info); | |
35692fe0 | 883 | Fgoto_char (tem); |
12038f9f | 884 | unchain_marker (XMARKER (tem)); |
2483cf58 GM |
885 | |
886 | /* Mark marker. */ | |
887 | info = XCDR (info); | |
888 | tem = XCAR (info); | |
4b4deea2 TT |
889 | omark = Fmarker_position (BVAR (current_buffer, mark)); |
890 | Fset_marker (BVAR (current_buffer, mark), tem, Fcurrent_buffer ()); | |
03d18690 | 891 | nmark = Fmarker_position (tem); |
12038f9f | 892 | unchain_marker (XMARKER (tem)); |
2483cf58 GM |
893 | |
894 | /* visible */ | |
895 | info = XCDR (info); | |
896 | visible_p = !NILP (XCAR (info)); | |
177c0ea7 | 897 | |
ef580991 RS |
898 | #if 0 /* We used to make the current buffer visible in the selected window |
899 | if that was true previously. That avoids some anomalies. | |
900 | But it creates others, and it wasn't documented, and it is simpler | |
901 | and cleaner never to alter the window/buffer connections. */ | |
9772455e RS |
902 | tem1 = Fcar (tem); |
903 | if (!NILP (tem1) | |
0e2c9c70 | 904 | && current_buffer != XBUFFER (XWINDOW (selected_window)->buffer)) |
35692fe0 | 905 | Fswitch_to_buffer (Fcurrent_buffer (), Qnil); |
ef580991 | 906 | #endif /* 0 */ |
9772455e | 907 | |
2483cf58 GM |
908 | /* Mark active */ |
909 | info = XCDR (info); | |
910 | tem = XCAR (info); | |
4b4deea2 TT |
911 | tem1 = BVAR (current_buffer, mark_active); |
912 | BVAR (current_buffer, mark_active) = tem; | |
2483cf58 | 913 | |
dee091a3 JD |
914 | /* If mark is active now, and either was not active |
915 | or was at a different place, run the activate hook. */ | |
916 | if (! NILP (tem)) | |
9fed2b18 | 917 | { |
dee091a3 JD |
918 | if (! EQ (omark, nmark)) |
919 | { | |
920 | tem = intern ("activate-mark-hook"); | |
921 | Frun_hooks (1, &tem); | |
922 | } | |
923 | } | |
924 | /* If mark has ceased to be active, run deactivate hook. */ | |
925 | else if (! NILP (tem1)) | |
926 | { | |
927 | tem = intern ("deactivate-mark-hook"); | |
928 | Frun_hooks (1, &tem); | |
9fed2b18 | 929 | } |
2483cf58 GM |
930 | |
931 | /* If buffer was visible in a window, and a different window was | |
793cd2c8 GM |
932 | selected, and the old selected window is still showing this |
933 | buffer, restore point in that window. */ | |
2483cf58 GM |
934 | tem = XCDR (info); |
935 | if (visible_p | |
936 | && !EQ (tem, selected_window) | |
ba973f7a GM |
937 | && (tem1 = XWINDOW (tem)->buffer, |
938 | (/* Window is live... */ | |
939 | BUFFERP (tem1) | |
940 | /* ...and it shows the current buffer. */ | |
941 | && XBUFFER (tem1) == current_buffer))) | |
2483cf58 GM |
942 | Fset_window_point (tem, make_number (PT)); |
943 | ||
4ad8681a | 944 | UNGCPRO; |
35692fe0 JB |
945 | return Qnil; |
946 | } | |
947 | ||
948 | DEFUN ("save-excursion", Fsave_excursion, Ssave_excursion, 0, UNEVALLED, 0, | |
7ee72033 | 949 | doc: /* Save point, mark, and current buffer; execute BODY; restore those things. |
a1f17501 PJ |
950 | Executes BODY just like `progn'. |
951 | The values of point, mark and the current buffer are restored | |
952 | even in case of abnormal exit (throw or error). | |
953 | The state of activation of the mark is also restored. | |
954 | ||
955 | This construct does not save `deactivate-mark', and therefore | |
956 | functions that change the buffer will still cause deactivation | |
957 | of the mark at the end of the command. To prevent that, bind | |
33c2d29f MB |
958 | `deactivate-mark' with `let'. |
959 | ||
7450fd36 SM |
960 | If you only want to save the current buffer but not point nor mark, |
961 | then just use `save-current-buffer', or even `with-current-buffer'. | |
962 | ||
33c2d29f | 963 | usage: (save-excursion &rest BODY) */) |
5842a27b | 964 | (Lisp_Object args) |
35692fe0 JB |
965 | { |
966 | register Lisp_Object val; | |
aed13378 | 967 | int count = SPECPDL_INDEX (); |
35692fe0 JB |
968 | |
969 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
4bc8c7d2 RS |
970 | |
971 | val = Fprogn (args); | |
972 | return unbind_to (count, val); | |
973 | } | |
974 | ||
975 | DEFUN ("save-current-buffer", Fsave_current_buffer, Ssave_current_buffer, 0, UNEVALLED, 0, | |
7ee72033 | 976 | doc: /* Save the current buffer; execute BODY; restore the current buffer. |
33c2d29f MB |
977 | Executes BODY just like `progn'. |
978 | usage: (save-current-buffer &rest BODY) */) | |
5842a27b | 979 | (Lisp_Object args) |
4bc8c7d2 | 980 | { |
acb7cc89 | 981 | Lisp_Object val; |
aed13378 | 982 | int count = SPECPDL_INDEX (); |
4bc8c7d2 | 983 | |
cb5e5f74 | 984 | record_unwind_protect (set_buffer_if_live, Fcurrent_buffer ()); |
4bc8c7d2 | 985 | |
35692fe0 JB |
986 | val = Fprogn (args); |
987 | return unbind_to (count, val); | |
988 | } | |
989 | \f | |
95dccf75 | 990 | DEFUN ("buffer-size", Fbufsize, Sbufsize, 0, 1, 0, |
7ee72033 MB |
991 | doc: /* Return the number of characters in the current buffer. |
992 | If BUFFER, return the number of characters in that buffer instead. */) | |
5842a27b | 993 | (Lisp_Object buffer) |
35692fe0 | 994 | { |
95dccf75 RS |
995 | if (NILP (buffer)) |
996 | return make_number (Z - BEG); | |
02050596 RS |
997 | else |
998 | { | |
b7826503 | 999 | CHECK_BUFFER (buffer); |
02050596 RS |
1000 | return make_number (BUF_Z (XBUFFER (buffer)) |
1001 | - BUF_BEG (XBUFFER (buffer))); | |
1002 | } | |
35692fe0 JB |
1003 | } |
1004 | ||
1005 | DEFUN ("point-min", Fpoint_min, Spoint_min, 0, 0, 0, | |
7ee72033 MB |
1006 | doc: /* Return the minimum permissible value of point in the current buffer. |
1007 | This is 1, unless narrowing (a buffer restriction) is in effect. */) | |
5842a27b | 1008 | (void) |
35692fe0 JB |
1009 | { |
1010 | Lisp_Object temp; | |
55561c63 | 1011 | XSETFASTINT (temp, BEGV); |
35692fe0 JB |
1012 | return temp; |
1013 | } | |
1014 | ||
1015 | DEFUN ("point-min-marker", Fpoint_min_marker, Spoint_min_marker, 0, 0, 0, | |
7ee72033 MB |
1016 | doc: /* Return a marker to the minimum permissible value of point in this buffer. |
1017 | This is the beginning, unless narrowing (a buffer restriction) is in effect. */) | |
5842a27b | 1018 | (void) |
35692fe0 | 1019 | { |
ec1c14f6 | 1020 | return buildmark (BEGV, BEGV_BYTE); |
35692fe0 JB |
1021 | } |
1022 | ||
1023 | DEFUN ("point-max", Fpoint_max, Spoint_max, 0, 0, 0, | |
7ee72033 | 1024 | doc: /* Return the maximum permissible value of point in the current buffer. |
a1f17501 | 1025 | This is (1+ (buffer-size)), unless narrowing (a buffer restriction) |
7ee72033 | 1026 | is in effect, in which case it is less. */) |
5842a27b | 1027 | (void) |
35692fe0 JB |
1028 | { |
1029 | Lisp_Object temp; | |
55561c63 | 1030 | XSETFASTINT (temp, ZV); |
35692fe0 JB |
1031 | return temp; |
1032 | } | |
1033 | ||
a7ca3326 | 1034 | DEFUN ("point-max-marker", Fpoint_max_marker, Spoint_max_marker, 0, 0, 0, |
7ee72033 | 1035 | doc: /* Return a marker to the maximum permissible value of point in this buffer. |
a1f17501 | 1036 | This is (1+ (buffer-size)), unless narrowing (a buffer restriction) |
7ee72033 | 1037 | is in effect, in which case it is less. */) |
5842a27b | 1038 | (void) |
35692fe0 | 1039 | { |
ec1c14f6 | 1040 | return buildmark (ZV, ZV_BYTE); |
35692fe0 JB |
1041 | } |
1042 | ||
c86212b9 | 1043 | DEFUN ("gap-position", Fgap_position, Sgap_position, 0, 0, 0, |
7ee72033 MB |
1044 | doc: /* Return the position of the gap, in the current buffer. |
1045 | See also `gap-size'. */) | |
5842a27b | 1046 | (void) |
c86212b9 RS |
1047 | { |
1048 | Lisp_Object temp; | |
1049 | XSETFASTINT (temp, GPT); | |
1050 | return temp; | |
1051 | } | |
1052 | ||
1053 | DEFUN ("gap-size", Fgap_size, Sgap_size, 0, 0, 0, | |
7ee72033 MB |
1054 | doc: /* Return the size of the current buffer's gap. |
1055 | See also `gap-position'. */) | |
5842a27b | 1056 | (void) |
c86212b9 RS |
1057 | { |
1058 | Lisp_Object temp; | |
1059 | XSETFASTINT (temp, GAP_SIZE); | |
1060 | return temp; | |
1061 | } | |
1062 | ||
7df74da6 | 1063 | DEFUN ("position-bytes", Fposition_bytes, Sposition_bytes, 1, 1, 0, |
7ee72033 MB |
1064 | doc: /* Return the byte position for character position POSITION. |
1065 | If POSITION is out of range, the value is nil. */) | |
5842a27b | 1066 | (Lisp_Object position) |
7df74da6 | 1067 | { |
b7826503 | 1068 | CHECK_NUMBER_COERCE_MARKER (position); |
fcf9683e KH |
1069 | if (XINT (position) < BEG || XINT (position) > Z) |
1070 | return Qnil; | |
fa8a5a15 | 1071 | return make_number (CHAR_TO_BYTE (XINT (position))); |
7df74da6 | 1072 | } |
3ab0732d RS |
1073 | |
1074 | DEFUN ("byte-to-position", Fbyte_to_position, Sbyte_to_position, 1, 1, 0, | |
7ee72033 MB |
1075 | doc: /* Return the character position for byte position BYTEPOS. |
1076 | If BYTEPOS is out of range, the value is nil. */) | |
5842a27b | 1077 | (Lisp_Object bytepos) |
3ab0732d | 1078 | { |
b7826503 | 1079 | CHECK_NUMBER (bytepos); |
fcf9683e KH |
1080 | if (XINT (bytepos) < BEG_BYTE || XINT (bytepos) > Z_BYTE) |
1081 | return Qnil; | |
3ab0732d RS |
1082 | return make_number (BYTE_TO_CHAR (XINT (bytepos))); |
1083 | } | |
7df74da6 | 1084 | \f |
a7ca3326 | 1085 | DEFUN ("following-char", Ffollowing_char, Sfollowing_char, 0, 0, 0, |
7ee72033 MB |
1086 | doc: /* Return the character following point, as a number. |
1087 | At the end of the buffer or accessible region, return 0. */) | |
5842a27b | 1088 | (void) |
35692fe0 JB |
1089 | { |
1090 | Lisp_Object temp; | |
6ec8bbd2 | 1091 | if (PT >= ZV) |
55561c63 | 1092 | XSETFASTINT (temp, 0); |
850a8179 | 1093 | else |
ec1c14f6 | 1094 | XSETFASTINT (temp, FETCH_CHAR (PT_BYTE)); |
35692fe0 JB |
1095 | return temp; |
1096 | } | |
1097 | ||
a7ca3326 | 1098 | DEFUN ("preceding-char", Fprevious_char, Sprevious_char, 0, 0, 0, |
7ee72033 MB |
1099 | doc: /* Return the character preceding point, as a number. |
1100 | At the beginning of the buffer or accessible region, return 0. */) | |
5842a27b | 1101 | (void) |
35692fe0 JB |
1102 | { |
1103 | Lisp_Object temp; | |
6ec8bbd2 | 1104 | if (PT <= BEGV) |
55561c63 | 1105 | XSETFASTINT (temp, 0); |
4b4deea2 | 1106 | else if (!NILP (BVAR (current_buffer, enable_multibyte_characters))) |
fb8106e8 | 1107 | { |
29cdc13e | 1108 | EMACS_INT pos = PT_BYTE; |
fb8106e8 KH |
1109 | DEC_POS (pos); |
1110 | XSETFASTINT (temp, FETCH_CHAR (pos)); | |
1111 | } | |
35692fe0 | 1112 | else |
ec1c14f6 | 1113 | XSETFASTINT (temp, FETCH_BYTE (PT_BYTE - 1)); |
35692fe0 JB |
1114 | return temp; |
1115 | } | |
1116 | ||
a7ca3326 | 1117 | DEFUN ("bobp", Fbobp, Sbobp, 0, 0, 0, |
7ee72033 MB |
1118 | doc: /* Return t if point is at the beginning of the buffer. |
1119 | If the buffer is narrowed, this means the beginning of the narrowed part. */) | |
5842a27b | 1120 | (void) |
35692fe0 | 1121 | { |
6ec8bbd2 | 1122 | if (PT == BEGV) |
35692fe0 JB |
1123 | return Qt; |
1124 | return Qnil; | |
1125 | } | |
1126 | ||
a7ca3326 | 1127 | DEFUN ("eobp", Feobp, Seobp, 0, 0, 0, |
7ee72033 MB |
1128 | doc: /* Return t if point is at the end of the buffer. |
1129 | If the buffer is narrowed, this means the end of the narrowed part. */) | |
5842a27b | 1130 | (void) |
35692fe0 | 1131 | { |
6ec8bbd2 | 1132 | if (PT == ZV) |
35692fe0 JB |
1133 | return Qt; |
1134 | return Qnil; | |
1135 | } | |
1136 | ||
a7ca3326 | 1137 | DEFUN ("bolp", Fbolp, Sbolp, 0, 0, 0, |
7ee72033 | 1138 | doc: /* Return t if point is at the beginning of a line. */) |
5842a27b | 1139 | (void) |
35692fe0 | 1140 | { |
ec1c14f6 | 1141 | if (PT == BEGV || FETCH_BYTE (PT_BYTE - 1) == '\n') |
35692fe0 JB |
1142 | return Qt; |
1143 | return Qnil; | |
1144 | } | |
1145 | ||
a7ca3326 | 1146 | DEFUN ("eolp", Feolp, Seolp, 0, 0, 0, |
7ee72033 MB |
1147 | doc: /* Return t if point is at the end of a line. |
1148 | `End of a line' includes point being at the end of the buffer. */) | |
5842a27b | 1149 | (void) |
35692fe0 | 1150 | { |
ec1c14f6 | 1151 | if (PT == ZV || FETCH_BYTE (PT_BYTE) == '\n') |
35692fe0 JB |
1152 | return Qt; |
1153 | return Qnil; | |
1154 | } | |
1155 | ||
a7ca3326 | 1156 | DEFUN ("char-after", Fchar_after, Schar_after, 0, 1, 0, |
7ee72033 | 1157 | doc: /* Return character in current buffer at position POS. |
f555f8cf | 1158 | POS is an integer or a marker and defaults to point. |
7ee72033 | 1159 | If POS is out of range, the value is nil. */) |
5842a27b | 1160 | (Lisp_Object pos) |
35692fe0 | 1161 | { |
29cdc13e | 1162 | register EMACS_INT pos_byte; |
35692fe0 | 1163 | |
fa1d3816 | 1164 | if (NILP (pos)) |
39a4c932 RS |
1165 | { |
1166 | pos_byte = PT_BYTE; | |
3c52e568 | 1167 | XSETFASTINT (pos, PT); |
39a4c932 RS |
1168 | } |
1169 | ||
1170 | if (MARKERP (pos)) | |
85cac557 RS |
1171 | { |
1172 | pos_byte = marker_byte_position (pos); | |
1173 | if (pos_byte < BEGV_BYTE || pos_byte >= ZV_BYTE) | |
1174 | return Qnil; | |
1175 | } | |
fa1d3816 RS |
1176 | else |
1177 | { | |
b7826503 | 1178 | CHECK_NUMBER_COERCE_MARKER (pos); |
b98ef0dc | 1179 | if (XINT (pos) < BEGV || XINT (pos) >= ZV) |
85cac557 | 1180 | return Qnil; |
34a7a267 | 1181 | |
ec1c14f6 | 1182 | pos_byte = CHAR_TO_BYTE (XINT (pos)); |
fa1d3816 | 1183 | } |
35692fe0 | 1184 | |
ec1c14f6 | 1185 | return make_number (FETCH_CHAR (pos_byte)); |
35692fe0 | 1186 | } |
fb8106e8 | 1187 | |
fa1d3816 | 1188 | DEFUN ("char-before", Fchar_before, Schar_before, 0, 1, 0, |
7ee72033 | 1189 | doc: /* Return character in current buffer preceding position POS. |
f555f8cf | 1190 | POS is an integer or a marker and defaults to point. |
7ee72033 | 1191 | If POS is out of range, the value is nil. */) |
5842a27b | 1192 | (Lisp_Object pos) |
fb8106e8 KH |
1193 | { |
1194 | register Lisp_Object val; | |
29cdc13e | 1195 | register EMACS_INT pos_byte; |
fb8106e8 | 1196 | |
fa1d3816 | 1197 | if (NILP (pos)) |
39a4c932 RS |
1198 | { |
1199 | pos_byte = PT_BYTE; | |
3c52e568 | 1200 | XSETFASTINT (pos, PT); |
39a4c932 RS |
1201 | } |
1202 | ||
1203 | if (MARKERP (pos)) | |
85cac557 RS |
1204 | { |
1205 | pos_byte = marker_byte_position (pos); | |
1206 | ||
1207 | if (pos_byte <= BEGV_BYTE || pos_byte > ZV_BYTE) | |
1208 | return Qnil; | |
1209 | } | |
fa1d3816 RS |
1210 | else |
1211 | { | |
b7826503 | 1212 | CHECK_NUMBER_COERCE_MARKER (pos); |
fb8106e8 | 1213 | |
b98ef0dc | 1214 | if (XINT (pos) <= BEGV || XINT (pos) > ZV) |
85cac557 RS |
1215 | return Qnil; |
1216 | ||
ec1c14f6 | 1217 | pos_byte = CHAR_TO_BYTE (XINT (pos)); |
fa1d3816 | 1218 | } |
fb8106e8 | 1219 | |
4b4deea2 | 1220 | if (!NILP (BVAR (current_buffer, enable_multibyte_characters))) |
fb8106e8 | 1221 | { |
ec1c14f6 RS |
1222 | DEC_POS (pos_byte); |
1223 | XSETFASTINT (val, FETCH_CHAR (pos_byte)); | |
fb8106e8 KH |
1224 | } |
1225 | else | |
1226 | { | |
ec1c14f6 RS |
1227 | pos_byte--; |
1228 | XSETFASTINT (val, FETCH_BYTE (pos_byte)); | |
fb8106e8 KH |
1229 | } |
1230 | return val; | |
1231 | } | |
35692fe0 | 1232 | \f |
a7ca3326 | 1233 | DEFUN ("user-login-name", Fuser_login_name, Suser_login_name, 0, 1, 0, |
7ee72033 | 1234 | doc: /* Return the name under which the user logged in, as a string. |
a1f17501 | 1235 | This is based on the effective uid, not the real uid. |
412f1fab | 1236 | Also, if the environment variables LOGNAME or USER are set, |
a1f17501 PJ |
1237 | that determines the value of this function. |
1238 | ||
7b1c38a4 EZ |
1239 | If optional argument UID is an integer or a float, return the login name |
1240 | of the user with that uid, or nil if there is no such user. */) | |
5842a27b | 1241 | (Lisp_Object uid) |
35692fe0 | 1242 | { |
87485d6f | 1243 | struct passwd *pw; |
7b1c38a4 | 1244 | uid_t id; |
87485d6f | 1245 | |
f8a0e364 RS |
1246 | /* Set up the user name info if we didn't do it before. |
1247 | (That can happen if Emacs is dumpable | |
1248 | but you decide to run `temacs -l loadup' and not dump. */ | |
35b34f72 | 1249 | if (INTEGERP (Vuser_login_name)) |
f8a0e364 | 1250 | init_editfns (); |
87485d6f MW |
1251 | |
1252 | if (NILP (uid)) | |
35b34f72 | 1253 | return Vuser_login_name; |
87485d6f | 1254 | |
63c5d10b | 1255 | id = XFLOATINT (uid); |
b91834c3 | 1256 | BLOCK_INPUT; |
63c5d10b | 1257 | pw = getpwuid (id); |
b91834c3 | 1258 | UNBLOCK_INPUT; |
87485d6f | 1259 | return (pw ? build_string (pw->pw_name) : Qnil); |
35692fe0 JB |
1260 | } |
1261 | ||
1262 | DEFUN ("user-real-login-name", Fuser_real_login_name, Suser_real_login_name, | |
deb8e082 | 1263 | 0, 0, 0, |
7ee72033 | 1264 | doc: /* Return the name of the user's real uid, as a string. |
a1f17501 | 1265 | This ignores the environment variables LOGNAME and USER, so it differs from |
7ee72033 | 1266 | `user-login-name' when running under `su'. */) |
5842a27b | 1267 | (void) |
35692fe0 | 1268 | { |
f8a0e364 RS |
1269 | /* Set up the user name info if we didn't do it before. |
1270 | (That can happen if Emacs is dumpable | |
1271 | but you decide to run `temacs -l loadup' and not dump. */ | |
35b34f72 | 1272 | if (INTEGERP (Vuser_login_name)) |
f8a0e364 | 1273 | init_editfns (); |
35b34f72 | 1274 | return Vuser_real_login_name; |
35692fe0 JB |
1275 | } |
1276 | ||
1277 | DEFUN ("user-uid", Fuser_uid, Suser_uid, 0, 0, 0, | |
7ee72033 | 1278 | doc: /* Return the effective uid of Emacs. |
e00553bf | 1279 | Value is an integer or a float, depending on the value. */) |
5842a27b | 1280 | (void) |
35692fe0 | 1281 | { |
3aef3c0a EZ |
1282 | /* Assignment to EMACS_INT stops GCC whining about limited range of |
1283 | data type. */ | |
1284 | EMACS_INT euid = geteuid (); | |
e00553bf EZ |
1285 | |
1286 | /* Make sure we don't produce a negative UID due to signed integer | |
1287 | overflow. */ | |
1288 | if (euid < 0) | |
63c5d10b | 1289 | return make_float (geteuid ()); |
3aef3c0a | 1290 | return make_fixnum_or_float (euid); |
35692fe0 JB |
1291 | } |
1292 | ||
1293 | DEFUN ("user-real-uid", Fuser_real_uid, Suser_real_uid, 0, 0, 0, | |
7ee72033 | 1294 | doc: /* Return the real uid of Emacs. |
e00553bf | 1295 | Value is an integer or a float, depending on the value. */) |
5842a27b | 1296 | (void) |
35692fe0 | 1297 | { |
3aef3c0a EZ |
1298 | /* Assignment to EMACS_INT stops GCC whining about limited range of |
1299 | data type. */ | |
1300 | EMACS_INT uid = getuid (); | |
e00553bf EZ |
1301 | |
1302 | /* Make sure we don't produce a negative UID due to signed integer | |
1303 | overflow. */ | |
1304 | if (uid < 0) | |
63c5d10b | 1305 | return make_float (getuid ()); |
3aef3c0a | 1306 | return make_fixnum_or_float (uid); |
35692fe0 JB |
1307 | } |
1308 | ||
c9ed721d | 1309 | DEFUN ("user-full-name", Fuser_full_name, Suser_full_name, 0, 1, 0, |
7ee72033 | 1310 | doc: /* Return the full name of the user logged in, as a string. |
a1f17501 PJ |
1311 | If the full name corresponding to Emacs's userid is not known, |
1312 | return "unknown". | |
1313 | ||
1314 | If optional argument UID is an integer or float, return the full name | |
1315 | of the user with that uid, or nil if there is no such user. | |
1316 | If UID is a string, return the full name of the user with that login | |
7ee72033 | 1317 | name, or nil if there is no such user. */) |
5842a27b | 1318 | (Lisp_Object uid) |
35692fe0 | 1319 | { |
c9ed721d | 1320 | struct passwd *pw; |
e7f8264d | 1321 | register char *p, *q; |
3415b0e9 | 1322 | Lisp_Object full; |
c9ed721d RS |
1323 | |
1324 | if (NILP (uid)) | |
34a7a267 | 1325 | return Vuser_full_name; |
3415b0e9 | 1326 | else if (NUMBERP (uid)) |
b91834c3 | 1327 | { |
63c5d10b | 1328 | uid_t u = XFLOATINT (uid); |
b91834c3 | 1329 | BLOCK_INPUT; |
63c5d10b | 1330 | pw = getpwuid (u); |
b91834c3 YM |
1331 | UNBLOCK_INPUT; |
1332 | } | |
34a7a267 | 1333 | else if (STRINGP (uid)) |
b91834c3 YM |
1334 | { |
1335 | BLOCK_INPUT; | |
63c5d10b | 1336 | pw = getpwnam (SSDATA (uid)); |
b91834c3 YM |
1337 | UNBLOCK_INPUT; |
1338 | } | |
3415b0e9 RS |
1339 | else |
1340 | error ("Invalid UID specification"); | |
c9ed721d | 1341 | |
3415b0e9 | 1342 | if (!pw) |
3347526c | 1343 | return Qnil; |
34a7a267 | 1344 | |
e7f8264d | 1345 | p = USER_FULL_NAME; |
3415b0e9 | 1346 | /* Chop off everything after the first comma. */ |
e7f8264d | 1347 | q = strchr (p, ','); |
3415b0e9 | 1348 | full = make_string (p, q ? q - p : strlen (p)); |
34a7a267 | 1349 | |
3415b0e9 | 1350 | #ifdef AMPERSAND_FULL_NAME |
e7f8264d PE |
1351 | p = SSDATA (full); |
1352 | q = strchr (p, '&'); | |
3415b0e9 RS |
1353 | /* Substitute the login name for the &, upcasing the first character. */ |
1354 | if (q) | |
1355 | { | |
e7f8264d | 1356 | register char *r; |
3415b0e9 RS |
1357 | Lisp_Object login; |
1358 | ||
1359 | login = Fuser_login_name (make_number (pw->pw_uid)); | |
e7f8264d | 1360 | r = (char *) alloca (strlen (p) + SCHARS (login) + 1); |
72af86bd | 1361 | memcpy (r, p, q - p); |
3415b0e9 | 1362 | r[q - p] = 0; |
42a5b22f | 1363 | strcat (r, SSDATA (login)); |
5da9919f | 1364 | r[q - p] = upcase ((unsigned char) r[q - p]); |
3415b0e9 RS |
1365 | strcat (r, q + 1); |
1366 | full = build_string (r); | |
1367 | } | |
1368 | #endif /* AMPERSAND_FULL_NAME */ | |
1369 | ||
1370 | return full; | |
35692fe0 JB |
1371 | } |
1372 | ||
a7ca3326 | 1373 | DEFUN ("system-name", Fsystem_name, Ssystem_name, 0, 0, 0, |
1a7e0117 | 1374 | doc: /* Return the host name of the machine you are running on, as a string. */) |
5842a27b | 1375 | (void) |
35692fe0 JB |
1376 | { |
1377 | return Vsystem_name; | |
1378 | } | |
1379 | ||
8ea90aa3 | 1380 | const char * |
971de7fb | 1381 | get_system_name (void) |
ac988277 | 1382 | { |
3d976a9a | 1383 | if (STRINGP (Vsystem_name)) |
51b59d79 | 1384 | return SSDATA (Vsystem_name); |
3d976a9a RS |
1385 | else |
1386 | return ""; | |
ac988277 KH |
1387 | } |
1388 | ||
7fd233b3 | 1389 | DEFUN ("emacs-pid", Femacs_pid, Semacs_pid, 0, 0, 0, |
7ee72033 | 1390 | doc: /* Return the process ID of Emacs, as an integer. */) |
5842a27b | 1391 | (void) |
7fd233b3 RS |
1392 | { |
1393 | return make_number (getpid ()); | |
1394 | } | |
1395 | ||
b8d9bd41 PE |
1396 | \f |
1397 | ||
1398 | #ifndef TIME_T_MIN | |
1399 | # define TIME_T_MIN TYPE_MINIMUM (time_t) | |
1400 | #endif | |
1401 | #ifndef TIME_T_MAX | |
1402 | # define TIME_T_MAX TYPE_MAXIMUM (time_t) | |
1403 | #endif | |
1404 | ||
1405 | /* Report that a time value is out of range for Emacs. */ | |
1406 | static void | |
1407 | time_overflow (void) | |
1408 | { | |
1409 | error ("Specified time is not representable"); | |
1410 | } | |
1411 | ||
1412 | /* Return the upper part of the time T (everything but the bottom 16 bits), | |
1413 | making sure that it is representable. */ | |
1414 | static EMACS_INT | |
1415 | hi_time (time_t t) | |
1416 | { | |
1417 | time_t hi = t >> 16; | |
313c1e54 PE |
1418 | |
1419 | /* Check for overflow, helping the compiler for common cases where | |
1420 | no runtime check is needed, and taking care not to convert | |
1421 | negative numbers to unsigned before comparing them. */ | |
1422 | if (! ((! TYPE_SIGNED (time_t) | |
1423 | || MOST_NEGATIVE_FIXNUM <= TIME_T_MIN >> 16 | |
1424 | || MOST_NEGATIVE_FIXNUM <= hi) | |
1425 | && (TIME_T_MAX >> 16 <= MOST_POSITIVE_FIXNUM | |
1426 | || hi <= MOST_POSITIVE_FIXNUM))) | |
b8d9bd41 | 1427 | time_overflow (); |
313c1e54 | 1428 | |
b8d9bd41 PE |
1429 | return hi; |
1430 | } | |
1431 | ||
1432 | /* Return the bottom 16 bits of the time T. */ | |
1433 | static EMACS_INT | |
1434 | lo_time (time_t t) | |
1435 | { | |
1436 | return t & ((1 << 16) - 1); | |
1437 | } | |
1438 | ||
a7ca3326 | 1439 | DEFUN ("current-time", Fcurrent_time, Scurrent_time, 0, 0, 0, |
7ee72033 | 1440 | doc: /* Return the current time, as the number of seconds since 1970-01-01 00:00:00. |
a1f17501 PJ |
1441 | The time is returned as a list of three integers. The first has the |
1442 | most significant 16 bits of the seconds, while the second has the | |
1443 | least significant 16 bits. The third integer gives the microsecond | |
1444 | count. | |
1445 | ||
1446 | The microsecond count is zero on systems that do not provide | |
7ee72033 | 1447 | resolution finer than a second. */) |
5842a27b | 1448 | (void) |
d940e0e4 | 1449 | { |
956ace37 | 1450 | EMACS_TIME t; |
956ace37 JB |
1451 | |
1452 | EMACS_GET_TIME (t); | |
b8d9bd41 PE |
1453 | return list3 (make_number (hi_time (EMACS_SECS (t))), |
1454 | make_number (lo_time (EMACS_SECS (t))), | |
799734b0 | 1455 | make_number (EMACS_USECS (t))); |
d940e0e4 | 1456 | } |
4211ee7d | 1457 | |
a7ca3326 | 1458 | DEFUN ("get-internal-run-time", Fget_internal_run_time, Sget_internal_run_time, |
4211ee7d EZ |
1459 | 0, 0, 0, |
1460 | doc: /* Return the current run time used by Emacs. | |
1461 | The time is returned as a list of three integers. The first has the | |
1462 | most significant 16 bits of the seconds, while the second has the | |
1463 | least significant 16 bits. The third integer gives the microsecond | |
1464 | count. | |
1465 | ||
9671c13a JB |
1466 | On systems that can't determine the run time, `get-internal-run-time' |
1467 | does the same thing as `current-time'. The microsecond count is zero | |
1468 | on systems that do not provide resolution finer than a second. */) | |
5842a27b | 1469 | (void) |
4211ee7d EZ |
1470 | { |
1471 | #ifdef HAVE_GETRUSAGE | |
1472 | struct rusage usage; | |
b8d9bd41 PE |
1473 | time_t secs; |
1474 | int usecs; | |
4211ee7d EZ |
1475 | |
1476 | if (getrusage (RUSAGE_SELF, &usage) < 0) | |
1477 | /* This shouldn't happen. What action is appropriate? */ | |
8a0ff744 | 1478 | xsignal0 (Qerror); |
4211ee7d EZ |
1479 | |
1480 | /* Sum up user time and system time. */ | |
1481 | secs = usage.ru_utime.tv_sec + usage.ru_stime.tv_sec; | |
1482 | usecs = usage.ru_utime.tv_usec + usage.ru_stime.tv_usec; | |
1483 | if (usecs >= 1000000) | |
1484 | { | |
1485 | usecs -= 1000000; | |
1486 | secs++; | |
1487 | } | |
1488 | ||
b8d9bd41 PE |
1489 | return list3 (make_number (hi_time (secs)), |
1490 | make_number (lo_time (secs)), | |
799734b0 | 1491 | make_number (usecs)); |
c433c134 | 1492 | #else /* ! HAVE_GETRUSAGE */ |
43db14bb | 1493 | #ifdef WINDOWSNT |
c433c134 JR |
1494 | return w32_get_internal_run_time (); |
1495 | #else /* ! WINDOWSNT */ | |
4211ee7d | 1496 | return Fcurrent_time (); |
c433c134 JR |
1497 | #endif /* WINDOWSNT */ |
1498 | #endif /* HAVE_GETRUSAGE */ | |
4211ee7d | 1499 | } |
d940e0e4 JB |
1500 | \f |
1501 | ||
8be6f318 PE |
1502 | /* Make a Lisp list that represents the time T. */ |
1503 | Lisp_Object | |
1504 | make_time (time_t t) | |
1505 | { | |
b8d9bd41 PE |
1506 | return list2 (make_number (hi_time (t)), |
1507 | make_number (lo_time (t))); | |
8be6f318 PE |
1508 | } |
1509 | ||
1510 | /* Decode a Lisp list SPECIFIED_TIME that represents a time. | |
1511 | If SPECIFIED_TIME is nil, use the current time. | |
1512 | Set *RESULT to seconds since the Epoch. | |
1513 | If USEC is not null, set *USEC to the microseconds component. | |
1514 | Return nonzero if successful. */ | |
5c5718b6 | 1515 | int |
971de7fb | 1516 | lisp_time_argument (Lisp_Object specified_time, time_t *result, int *usec) |
e3120ab5 JB |
1517 | { |
1518 | if (NILP (specified_time)) | |
34a7a267 SS |
1519 | { |
1520 | if (usec) | |
1521 | { | |
1522 | EMACS_TIME t; | |
1523 | ||
c0261b5e | 1524 | EMACS_GET_TIME (t); |
34a7a267 SS |
1525 | *usec = EMACS_USECS (t); |
1526 | *result = EMACS_SECS (t); | |
1527 | return 1; | |
1528 | } | |
1529 | else | |
1530 | return time (result) != -1; | |
1531 | } | |
e3120ab5 JB |
1532 | else |
1533 | { | |
1534 | Lisp_Object high, low; | |
313c1e54 | 1535 | EMACS_INT hi; |
e3120ab5 | 1536 | high = Fcar (specified_time); |
b7826503 | 1537 | CHECK_NUMBER (high); |
e3120ab5 | 1538 | low = Fcdr (specified_time); |
ae683129 | 1539 | if (CONSP (low)) |
34a7a267 SS |
1540 | { |
1541 | if (usec) | |
1542 | { | |
1543 | Lisp_Object usec_l = Fcdr (low); | |
1544 | if (CONSP (usec_l)) | |
1545 | usec_l = Fcar (usec_l); | |
1546 | if (NILP (usec_l)) | |
1547 | *usec = 0; | |
1548 | else | |
1549 | { | |
b7826503 | 1550 | CHECK_NUMBER (usec_l); |
34a7a267 SS |
1551 | *usec = XINT (usec_l); |
1552 | } | |
1553 | } | |
1554 | low = Fcar (low); | |
1555 | } | |
1556 | else if (usec) | |
1557 | *usec = 0; | |
b7826503 | 1558 | CHECK_NUMBER (low); |
313c1e54 PE |
1559 | hi = XINT (high); |
1560 | ||
1561 | /* Check for overflow, helping the compiler for common cases | |
1562 | where no runtime check is needed, and taking care not to | |
1563 | convert negative numbers to unsigned before comparing them. */ | |
1564 | if (! ((TYPE_SIGNED (time_t) | |
1565 | ? (TIME_T_MIN >> 16 <= MOST_NEGATIVE_FIXNUM | |
1566 | || TIME_T_MIN >> 16 <= hi) | |
1567 | : 0 <= hi) | |
1568 | && (MOST_POSITIVE_FIXNUM <= TIME_T_MAX >> 16 | |
1569 | || hi <= TIME_T_MAX >> 16))) | |
1570 | return 0; | |
1571 | ||
1572 | *result = (hi << 16) + (XINT (low) & 0xffff); | |
1573 | return 1; | |
e3120ab5 JB |
1574 | } |
1575 | } | |
1576 | ||
34a7a267 | 1577 | DEFUN ("float-time", Ffloat_time, Sfloat_time, 0, 1, 0, |
7ee72033 | 1578 | doc: /* Return the current time, as a float number of seconds since the epoch. |
412f1fab | 1579 | If SPECIFIED-TIME is given, it is the time to convert to float |
5668fbb8 | 1580 | instead of the current time. The argument should have the form |
c6493cdd | 1581 | (HIGH LOW) or (HIGH LOW USEC). Thus, you can use times obtained from |
5668fbb8 LT |
1582 | `current-time' and from `file-attributes'. SPECIFIED-TIME can also |
1583 | have the form (HIGH . LOW), but this is considered obsolete. | |
a1f17501 PJ |
1584 | |
1585 | WARNING: Since the result is floating point, it may not be exact. | |
d427a9fa EZ |
1586 | If precise time stamps are required, use either `current-time', |
1587 | or (if you need time as a string) `format-time-string'. */) | |
5842a27b | 1588 | (Lisp_Object specified_time) |
34a7a267 SS |
1589 | { |
1590 | time_t sec; | |
1591 | int usec; | |
1592 | ||
1593 | if (! lisp_time_argument (specified_time, &sec, &usec)) | |
1594 | error ("Invalid time specification"); | |
1595 | ||
26fad6e5 | 1596 | return make_float ((sec * 1e6 + usec) / 1e6); |
34a7a267 SS |
1597 | } |
1598 | ||
70ebbe5f PE |
1599 | /* Write information into buffer S of size MAXSIZE, according to the |
1600 | FORMAT of length FORMAT_LEN, using time information taken from *TP. | |
68c45bf0 | 1601 | Default to Universal Time if UT is nonzero, local time otherwise. |
a4180391 | 1602 | Use NS as the number of nanoseconds in the %N directive. |
70ebbe5f PE |
1603 | Return the number of bytes written, not including the terminating |
1604 | '\0'. If S is NULL, nothing will be written anywhere; so to | |
1605 | determine how many bytes would be written, use NULL for S and | |
1606 | ((size_t) -1) for MAXSIZE. | |
1607 | ||
16c3e636 PE |
1608 | This function behaves like nstrftime, except it allows null |
1609 | bytes in FORMAT and it does not support nanoseconds. */ | |
70ebbe5f | 1610 | static size_t |
a4180391 PE |
1611 | emacs_nmemftime (char *s, size_t maxsize, const char *format, |
1612 | size_t format_len, const struct tm *tp, int ut, int ns) | |
70ebbe5f PE |
1613 | { |
1614 | size_t total = 0; | |
1615 | ||
be09e6e6 PE |
1616 | /* Loop through all the null-terminated strings in the format |
1617 | argument. Normally there's just one null-terminated string, but | |
1618 | there can be arbitrarily many, concatenated together, if the | |
16c3e636 | 1619 | format contains '\0' bytes. nstrftime stops at the first |
be09e6e6 | 1620 | '\0' byte so we must invoke it separately for each such string. */ |
70ebbe5f PE |
1621 | for (;;) |
1622 | { | |
1623 | size_t len; | |
1624 | size_t result; | |
1625 | ||
1626 | if (s) | |
1627 | s[0] = '\1'; | |
1628 | ||
a4180391 | 1629 | result = nstrftime (s, maxsize, format, tp, ut, ns); |
70ebbe5f PE |
1630 | |
1631 | if (s) | |
1632 | { | |
1633 | if (result == 0 && s[0] != '\0') | |
1634 | return 0; | |
1635 | s += result + 1; | |
1636 | } | |
1637 | ||
1638 | maxsize -= result + 1; | |
1639 | total += result; | |
1640 | len = strlen (format); | |
1641 | if (len == format_len) | |
1642 | return total; | |
1643 | total++; | |
1644 | format += len + 1; | |
1645 | format_len -= len + 1; | |
1646 | } | |
1647 | } | |
1648 | ||
3efcc98a | 1649 | DEFUN ("format-time-string", Fformat_time_string, Sformat_time_string, 1, 3, 0, |
7ee72033 | 1650 | doc: /* Use FORMAT-STRING to format the time TIME, or now if omitted. |
5668fbb8 LT |
1651 | TIME is specified as (HIGH LOW . IGNORED), as returned by |
1652 | `current-time' or `file-attributes'. The obsolete form (HIGH . LOW) | |
1653 | is also still accepted. | |
a1f17501 PJ |
1654 | The third, optional, argument UNIVERSAL, if non-nil, means describe TIME |
1655 | as Universal Time; nil means describe TIME in the local time zone. | |
1656 | The value is a copy of FORMAT-STRING, but with certain constructs replaced | |
1657 | by text that describes the specified date and time in TIME: | |
1658 | ||
1659 | %Y is the year, %y within the century, %C the century. | |
1660 | %G is the year corresponding to the ISO week, %g within the century. | |
1661 | %m is the numeric month. | |
1662 | %b and %h are the locale's abbreviated month name, %B the full name. | |
1663 | %d is the day of the month, zero-padded, %e is blank-padded. | |
1664 | %u is the numeric day of week from 1 (Monday) to 7, %w from 0 (Sunday) to 6. | |
1665 | %a is the locale's abbreviated name of the day of week, %A the full name. | |
1666 | %U is the week number starting on Sunday, %W starting on Monday, | |
1667 | %V according to ISO 8601. | |
1668 | %j is the day of the year. | |
1669 | ||
1670 | %H is the hour on a 24-hour clock, %I is on a 12-hour clock, %k is like %H | |
1671 | only blank-padded, %l is like %I blank-padded. | |
1672 | %p is the locale's equivalent of either AM or PM. | |
1673 | %M is the minute. | |
1674 | %S is the second. | |
a4180391 | 1675 | %N is the nanosecond, %6N the microsecond, %3N the millisecond, etc. |
a1f17501 PJ |
1676 | %Z is the time zone name, %z is the numeric form. |
1677 | %s is the number of seconds since 1970-01-01 00:00:00 +0000. | |
1678 | ||
1679 | %c is the locale's date and time format. | |
1680 | %x is the locale's "preferred" date format. | |
1681 | %D is like "%m/%d/%y". | |
1682 | ||
1683 | %R is like "%H:%M", %T is like "%H:%M:%S", %r is like "%I:%M:%S %p". | |
1684 | %X is the locale's "preferred" time format. | |
1685 | ||
1686 | Finally, %n is a newline, %t is a tab, %% is a literal %. | |
1687 | ||
1688 | Certain flags and modifiers are available with some format controls. | |
1689 | The flags are `_', `-', `^' and `#'. For certain characters X, | |
1690 | %_X is like %X, but padded with blanks; %-X is like %X, | |
a67a233b MR |
1691 | but without padding. %^X is like %X, but with all textual |
1692 | characters up-cased; %#X is like %X, but with letter-case of | |
a1f17501 PJ |
1693 | all textual characters reversed. |
1694 | %NX (where N stands for an integer) is like %X, | |
1695 | but takes up at least N (a number) positions. | |
1696 | The modifiers are `E' and `O'. For certain characters X, | |
1697 | %EX is a locale's alternative version of %X; | |
1698 | %OX is like %X, but uses the locale's number symbols. | |
1699 | ||
75bfc667 JL |
1700 | For example, to produce full ISO 8601 format, use "%Y-%m-%dT%T%z". |
1701 | ||
1702 | usage: (format-time-string FORMAT-STRING &optional TIME UNIVERSAL) */) | |
545b49b4 | 1703 | (Lisp_Object format_string, Lisp_Object timeval, Lisp_Object universal) |
a82d387c | 1704 | { |
7da0b018 PE |
1705 | time_t t; |
1706 | struct tm *tm; | |
1707 | ||
1708 | CHECK_STRING (format_string); | |
1709 | format_string = code_convert_string_norecord (format_string, | |
1710 | Vlocale_coding_system, 1); | |
1711 | return format_time_string (SSDATA (format_string), SBYTES (format_string), | |
1712 | timeval, ! NILP (universal), &t, &tm); | |
1713 | } | |
1714 | ||
1715 | static Lisp_Object | |
1716 | format_time_string (char const *format, ptrdiff_t formatlen, | |
1717 | Lisp_Object timeval, int ut, time_t *tval, struct tm **tmp) | |
1718 | { | |
da64016e | 1719 | ptrdiff_t size; |
a4180391 PE |
1720 | int usec; |
1721 | int ns; | |
177ea5f1 | 1722 | struct tm *tm; |
a82d387c | 1723 | |
7da0b018 | 1724 | if (! (lisp_time_argument (timeval, tval, &usec) |
a4180391 | 1725 | && 0 <= usec && usec < 1000000)) |
a82d387c | 1726 | error ("Invalid time specification"); |
a4180391 | 1727 | ns = usec * 1000; |
a82d387c RS |
1728 | |
1729 | /* This is probably enough. */ | |
7da0b018 | 1730 | size = formatlen; |
da64016e PE |
1731 | if (size <= (STRING_BYTES_BOUND - 50) / 6) |
1732 | size = size * 6 + 50; | |
a82d387c | 1733 | |
bcda42c8 | 1734 | BLOCK_INPUT; |
7da0b018 | 1735 | tm = ut ? gmtime (tval) : localtime (tval); |
bcda42c8 | 1736 | UNBLOCK_INPUT; |
177ea5f1 | 1737 | if (! tm) |
fe31d94c | 1738 | time_overflow (); |
7da0b018 | 1739 | *tmp = tm; |
177ea5f1 | 1740 | |
ca9c0567 | 1741 | synchronize_system_time_locale (); |
68c45bf0 | 1742 | |
a82d387c RS |
1743 | while (1) |
1744 | { | |
b48382a0 | 1745 | char *buf = (char *) alloca (size + 1); |
da64016e | 1746 | size_t result; |
b48382a0 | 1747 | |
bfbcc5ee | 1748 | buf[0] = '\1'; |
bcda42c8 | 1749 | BLOCK_INPUT; |
7da0b018 | 1750 | result = emacs_nmemftime (buf, size, format, formatlen, tm, ut, ns); |
bcda42c8 | 1751 | UNBLOCK_INPUT; |
bfbcc5ee | 1752 | if ((result > 0 && result < size) || (result == 0 && buf[0] == '\0')) |
04e28558 | 1753 | return code_convert_string_norecord (make_unibyte_string (buf, result), |
68c45bf0 | 1754 | Vlocale_coding_system, 0); |
b48382a0 RS |
1755 | |
1756 | /* If buffer was too small, make it bigger and try again. */ | |
bcda42c8 | 1757 | BLOCK_INPUT; |
7da0b018 | 1758 | result = emacs_nmemftime (NULL, (size_t) -1, format, formatlen, |
a4180391 | 1759 | tm, ut, ns); |
bcda42c8 | 1760 | UNBLOCK_INPUT; |
da64016e PE |
1761 | if (STRING_BYTES_BOUND <= result) |
1762 | string_overflow (); | |
b48382a0 | 1763 | size = result + 1; |
a82d387c RS |
1764 | } |
1765 | } | |
1766 | ||
4691c06d | 1767 | DEFUN ("decode-time", Fdecode_time, Sdecode_time, 0, 1, 0, |
7ee72033 | 1768 | doc: /* Decode a time value as (SEC MINUTE HOUR DAY MONTH YEAR DOW DST ZONE). |
5668fbb8 | 1769 | The optional SPECIFIED-TIME should be a list of (HIGH LOW . IGNORED), |
9671c13a | 1770 | as from `current-time' and `file-attributes', or nil to use the |
5668fbb8 LT |
1771 | current time. The obsolete form (HIGH . LOW) is also still accepted. |
1772 | The list has the following nine members: SEC is an integer between 0 | |
1773 | and 60; SEC is 60 for a leap second, which only some operating systems | |
1774 | support. MINUTE is an integer between 0 and 59. HOUR is an integer | |
1775 | between 0 and 23. DAY is an integer between 1 and 31. MONTH is an | |
1776 | integer between 1 and 12. YEAR is an integer indicating the | |
1777 | four-digit year. DOW is the day of week, an integer between 0 and 6, | |
f1767e2b | 1778 | where 0 is Sunday. DST is t if daylight saving time is in effect, |
5668fbb8 LT |
1779 | otherwise nil. ZONE is an integer indicating the number of seconds |
1780 | east of Greenwich. (Note that Common Lisp has different meanings for | |
1781 | DOW and ZONE.) */) | |
5842a27b | 1782 | (Lisp_Object specified_time) |
4691c06d RS |
1783 | { |
1784 | time_t time_spec; | |
3c887943 | 1785 | struct tm save_tm; |
4691c06d RS |
1786 | struct tm *decoded_time; |
1787 | Lisp_Object list_args[9]; | |
34a7a267 SS |
1788 | |
1789 | if (! lisp_time_argument (specified_time, &time_spec, NULL)) | |
4691c06d RS |
1790 | error ("Invalid time specification"); |
1791 | ||
bcda42c8 | 1792 | BLOCK_INPUT; |
4691c06d | 1793 | decoded_time = localtime (&time_spec); |
bcda42c8 | 1794 | UNBLOCK_INPUT; |
b8d9bd41 PE |
1795 | if (! (decoded_time |
1796 | && MOST_NEGATIVE_FIXNUM - TM_YEAR_BASE <= decoded_time->tm_year | |
1797 | && decoded_time->tm_year <= MOST_POSITIVE_FIXNUM - TM_YEAR_BASE)) | |
fe31d94c | 1798 | time_overflow (); |
3c887943 KH |
1799 | XSETFASTINT (list_args[0], decoded_time->tm_sec); |
1800 | XSETFASTINT (list_args[1], decoded_time->tm_min); | |
1801 | XSETFASTINT (list_args[2], decoded_time->tm_hour); | |
1802 | XSETFASTINT (list_args[3], decoded_time->tm_mday); | |
1803 | XSETFASTINT (list_args[4], decoded_time->tm_mon + 1); | |
71c3f28f EZ |
1804 | /* On 64-bit machines an int is narrower than EMACS_INT, thus the |
1805 | cast below avoids overflow in int arithmetics. */ | |
aac18aa4 | 1806 | XSETINT (list_args[5], TM_YEAR_BASE + (EMACS_INT) decoded_time->tm_year); |
3c887943 | 1807 | XSETFASTINT (list_args[6], decoded_time->tm_wday); |
4691c06d | 1808 | list_args[7] = (decoded_time->tm_isdst)? Qt : Qnil; |
3c887943 KH |
1809 | |
1810 | /* Make a copy, in case gmtime modifies the struct. */ | |
1811 | save_tm = *decoded_time; | |
bcda42c8 | 1812 | BLOCK_INPUT; |
3c887943 | 1813 | decoded_time = gmtime (&time_spec); |
bcda42c8 | 1814 | UNBLOCK_INPUT; |
3c887943 KH |
1815 | if (decoded_time == 0) |
1816 | list_args[8] = Qnil; | |
1817 | else | |
94751666 | 1818 | XSETINT (list_args[8], tm_diff (&save_tm, decoded_time)); |
4691c06d RS |
1819 | return Flist (9, list_args); |
1820 | } | |
1821 | ||
b8d9bd41 PE |
1822 | /* Return OBJ - OFFSET, checking that OBJ is a valid fixnum and that |
1823 | the result is representable as an int. Assume OFFSET is small and | |
1824 | nonnegative. */ | |
1825 | static int | |
1826 | check_tm_member (Lisp_Object obj, int offset) | |
1827 | { | |
1828 | EMACS_INT n; | |
1829 | CHECK_NUMBER (obj); | |
1830 | n = XINT (obj); | |
1831 | if (! (INT_MIN + offset <= n && n - offset <= INT_MAX)) | |
1832 | time_overflow (); | |
1833 | return n - offset; | |
1834 | } | |
1835 | ||
6ee9061c | 1836 | DEFUN ("encode-time", Fencode_time, Sencode_time, 6, MANY, 0, |
7ee72033 | 1837 | doc: /* Convert SECOND, MINUTE, HOUR, DAY, MONTH, YEAR and ZONE to internal time. |
a1f17501 PJ |
1838 | This is the reverse operation of `decode-time', which see. |
1839 | ZONE defaults to the current time zone rule. This can | |
1840 | be a string or t (as from `set-time-zone-rule'), or it can be a list | |
b57c2708 | 1841 | \(as from `current-time-zone') or an integer (as from `decode-time') |
9c279ddf | 1842 | applied without consideration for daylight saving time. |
a1f17501 PJ |
1843 | |
1844 | You can pass more than 7 arguments; then the first six arguments | |
1845 | are used as SECOND through YEAR, and the *last* argument is used as ZONE. | |
1846 | The intervening arguments are ignored. | |
1847 | This feature lets (apply 'encode-time (decode-time ...)) work. | |
1848 | ||
412f1fab | 1849 | Out-of-range values for SECOND, MINUTE, HOUR, DAY, or MONTH are allowed; |
a1f17501 PJ |
1850 | for example, a DAY of 0 means the day preceding the given month. |
1851 | Year numbers less than 100 are treated just like other year numbers. | |
4bfbe194 MB |
1852 | If you want them to stand for years in this century, you must do that yourself. |
1853 | ||
f555f8cf KH |
1854 | Years before 1970 are not guaranteed to work. On some systems, |
1855 | year values as low as 1901 do work. | |
1856 | ||
4bfbe194 | 1857 | usage: (encode-time SECOND MINUTE HOUR DAY MONTH YEAR &optional ZONE) */) |
f66c7cf8 | 1858 | (ptrdiff_t nargs, Lisp_Object *args) |
cce7b8a0 | 1859 | { |
545b49b4 | 1860 | time_t value; |
c59b5089 | 1861 | struct tm tm; |
60653898 | 1862 | Lisp_Object zone = (nargs > 6 ? args[nargs - 1] : Qnil); |
6ee9061c | 1863 | |
b8d9bd41 PE |
1864 | tm.tm_sec = check_tm_member (args[0], 0); |
1865 | tm.tm_min = check_tm_member (args[1], 0); | |
1866 | tm.tm_hour = check_tm_member (args[2], 0); | |
1867 | tm.tm_mday = check_tm_member (args[3], 0); | |
1868 | tm.tm_mon = check_tm_member (args[4], 1); | |
1869 | tm.tm_year = check_tm_member (args[5], TM_YEAR_BASE); | |
c59b5089 PE |
1870 | tm.tm_isdst = -1; |
1871 | ||
1872 | if (CONSP (zone)) | |
1873 | zone = Fcar (zone); | |
1b8fa736 | 1874 | if (NILP (zone)) |
bcda42c8 YM |
1875 | { |
1876 | BLOCK_INPUT; | |
545b49b4 | 1877 | value = mktime (&tm); |
bcda42c8 YM |
1878 | UNBLOCK_INPUT; |
1879 | } | |
c59b5089 | 1880 | else |
1b8fa736 | 1881 | { |
c59b5089 | 1882 | char tzbuf[100]; |
8ea90aa3 | 1883 | const char *tzstring; |
c59b5089 | 1884 | char **oldenv = environ, **newenv; |
34a7a267 | 1885 | |
2e34157c | 1886 | if (EQ (zone, Qt)) |
085e9fcb EN |
1887 | tzstring = "UTC0"; |
1888 | else if (STRINGP (zone)) | |
51b59d79 | 1889 | tzstring = SSDATA (zone); |
c59b5089 | 1890 | else if (INTEGERP (zone)) |
1b8fa736 | 1891 | { |
1ea40aa2 | 1892 | int abszone = eabs (XINT (zone)); |
c59b5089 PE |
1893 | sprintf (tzbuf, "XXX%s%d:%02d:%02d", "-" + (XINT (zone) < 0), |
1894 | abszone / (60*60), (abszone/60) % 60, abszone % 60); | |
1895 | tzstring = tzbuf; | |
1b8fa736 | 1896 | } |
c59b5089 PE |
1897 | else |
1898 | error ("Invalid time zone specification"); | |
1899 | ||
34a7a267 | 1900 | /* Set TZ before calling mktime; merely adjusting mktime's returned |
c59b5089 PE |
1901 | value doesn't suffice, since that would mishandle leap seconds. */ |
1902 | set_time_zone_rule (tzstring); | |
1903 | ||
bcda42c8 | 1904 | BLOCK_INPUT; |
545b49b4 | 1905 | value = mktime (&tm); |
bcda42c8 | 1906 | UNBLOCK_INPUT; |
c59b5089 PE |
1907 | |
1908 | /* Restore TZ to previous value. */ | |
1909 | newenv = environ; | |
1910 | environ = oldenv; | |
c0efcacf | 1911 | xfree (newenv); |
c59b5089 PE |
1912 | #ifdef LOCALTIME_CACHE |
1913 | tzset (); | |
1914 | #endif | |
1b8fa736 | 1915 | } |
1b8fa736 | 1916 | |
545b49b4 | 1917 | if (value == (time_t) -1) |
fe31d94c | 1918 | time_overflow (); |
c59b5089 | 1919 | |
545b49b4 | 1920 | return make_time (value); |
cce7b8a0 RS |
1921 | } |
1922 | ||
2148f2b4 | 1923 | DEFUN ("current-time-string", Fcurrent_time_string, Scurrent_time_string, 0, 1, 0, |
244b023e | 1924 | doc: /* Return the current local time, as a human-readable string. |
a1f17501 | 1925 | Programs can use this function to decode a time, |
d65b4235 PE |
1926 | since the number of columns in each field is fixed |
1927 | if the year is in the range 1000-9999. | |
a1f17501 PJ |
1928 | The format is `Sun Sep 16 01:03:52 1973'. |
1929 | However, see also the functions `decode-time' and `format-time-string' | |
1930 | which provide a much more powerful and general facility. | |
1931 | ||
5668fbb8 LT |
1932 | If SPECIFIED-TIME is given, it is a time to format instead of the |
1933 | current time. The argument should have the form (HIGH LOW . IGNORED). | |
1934 | Thus, you can use times obtained from `current-time' and from | |
1935 | `file-attributes'. SPECIFIED-TIME can also have the form (HIGH . LOW), | |
1936 | but this is considered obsolete. */) | |
5842a27b | 1937 | (Lisp_Object specified_time) |
2148f2b4 | 1938 | { |
e3120ab5 | 1939 | time_t value; |
aac18aa4 | 1940 | struct tm *tm; |
2148f2b4 RS |
1941 | register char *tem; |
1942 | ||
34a7a267 | 1943 | if (! lisp_time_argument (specified_time, &value, NULL)) |
aac18aa4 | 1944 | error ("Invalid time specification"); |
d65b4235 PE |
1945 | |
1946 | /* Convert to a string, checking for out-of-range time stamps. | |
1947 | Don't use 'ctime', as that might dump core if VALUE is out of | |
1948 | range. */ | |
bcda42c8 | 1949 | BLOCK_INPUT; |
aac18aa4 | 1950 | tm = localtime (&value); |
bcda42c8 | 1951 | UNBLOCK_INPUT; |
d65b4235 | 1952 | if (! (tm && TM_YEAR_IN_ASCTIME_RANGE (tm->tm_year) && (tem = asctime (tm)))) |
fe31d94c | 1953 | time_overflow (); |
35692fe0 | 1954 | |
d65b4235 PE |
1955 | /* Remove the trailing newline. */ |
1956 | tem[strlen (tem) - 1] = '\0'; | |
35692fe0 | 1957 | |
d65b4235 | 1958 | return build_string (tem); |
35692fe0 | 1959 | } |
c2662aea | 1960 | |
94751666 PE |
1961 | /* Yield A - B, measured in seconds. |
1962 | This function is copied from the GNU C Library. */ | |
1963 | static int | |
971de7fb | 1964 | tm_diff (struct tm *a, struct tm *b) |
e3120ab5 | 1965 | { |
94751666 PE |
1966 | /* Compute intervening leap days correctly even if year is negative. |
1967 | Take care to avoid int overflow in leap day calculations, | |
1968 | but it's OK to assume that A and B are close to each other. */ | |
1969 | int a4 = (a->tm_year >> 2) + (TM_YEAR_BASE >> 2) - ! (a->tm_year & 3); | |
1970 | int b4 = (b->tm_year >> 2) + (TM_YEAR_BASE >> 2) - ! (b->tm_year & 3); | |
1971 | int a100 = a4 / 25 - (a4 % 25 < 0); | |
1972 | int b100 = b4 / 25 - (b4 % 25 < 0); | |
1973 | int a400 = a100 >> 2; | |
1974 | int b400 = b100 >> 2; | |
1975 | int intervening_leap_days = (a4 - b4) - (a100 - b100) + (a400 - b400); | |
1976 | int years = a->tm_year - b->tm_year; | |
1977 | int days = (365 * years + intervening_leap_days | |
1978 | + (a->tm_yday - b->tm_yday)); | |
1979 | return (60 * (60 * (24 * days + (a->tm_hour - b->tm_hour)) | |
1980 | + (a->tm_min - b->tm_min)) | |
8e718b4e | 1981 | + (a->tm_sec - b->tm_sec)); |
e3120ab5 JB |
1982 | } |
1983 | ||
1984 | DEFUN ("current-time-zone", Fcurrent_time_zone, Scurrent_time_zone, 0, 1, 0, | |
7ee72033 | 1985 | doc: /* Return the offset and name for the local time zone. |
a1f17501 PJ |
1986 | This returns a list of the form (OFFSET NAME). |
1987 | OFFSET is an integer number of seconds ahead of UTC (east of Greenwich). | |
1988 | A negative value means west of Greenwich. | |
1989 | NAME is a string giving the name of the time zone. | |
412f1fab | 1990 | If SPECIFIED-TIME is given, the time zone offset is determined from it |
5668fbb8 LT |
1991 | instead of using the current time. The argument should have the form |
1992 | (HIGH LOW . IGNORED). Thus, you can use times obtained from | |
1993 | `current-time' and from `file-attributes'. SPECIFIED-TIME can also | |
1994 | have the form (HIGH . LOW), but this is considered obsolete. | |
a1f17501 PJ |
1995 | |
1996 | Some operating systems cannot provide all this information to Emacs; | |
1997 | in this case, `current-time-zone' returns a list containing nil for | |
7ee72033 | 1998 | the data it can't find. */) |
5842a27b | 1999 | (Lisp_Object specified_time) |
c2662aea | 2000 | { |
e3120ab5 JB |
2001 | time_t value; |
2002 | struct tm *t; | |
7da0b018 PE |
2003 | struct tm localtm; |
2004 | struct tm *localt; | |
2005 | Lisp_Object zone_offset, zone_name; | |
2006 | ||
2007 | zone_offset = Qnil; | |
2008 | zone_name = format_time_string ("%Z", sizeof "%Z" - 1, specified_time, | |
2009 | 0, &value, &localt); | |
2010 | localtm = *localt; | |
2011 | BLOCK_INPUT; | |
2012 | t = gmtime (&value); | |
2013 | UNBLOCK_INPUT; | |
bcda42c8 YM |
2014 | |
2015 | if (t) | |
e3120ab5 | 2016 | { |
7da0b018 PE |
2017 | int offset = tm_diff (&localtm, t); |
2018 | zone_offset = make_number (offset); | |
2019 | if (SCHARS (zone_name) == 0) | |
e3120ab5 JB |
2020 | { |
2021 | /* No local time zone name is available; use "+-NNNN" instead. */ | |
33ef5c64 PE |
2022 | int m = offset / 60; |
2023 | int am = offset < 0 ? - m : m; | |
7da0b018 | 2024 | char buf[sizeof "+00" + INT_STRLEN_BOUND (int)]; |
e3120ab5 | 2025 | sprintf (buf, "%c%02d%02d", (offset < 0 ? '-' : '+'), am/60, am%60); |
7da0b018 | 2026 | zone_name = build_string (buf); |
e3120ab5 | 2027 | } |
e3120ab5 | 2028 | } |
7da0b018 PE |
2029 | |
2030 | return list2 (zone_offset, zone_name); | |
c2662aea JB |
2031 | } |
2032 | ||
260e2e2a KH |
2033 | /* This holds the value of `environ' produced by the previous |
2034 | call to Fset_time_zone_rule, or 0 if Fset_time_zone_rule | |
2035 | has never been called. */ | |
2036 | static char **environbuf; | |
2037 | ||
a03fc5a6 JR |
2038 | /* This holds the startup value of the TZ environment variable so it |
2039 | can be restored if the user calls set-time-zone-rule with a nil | |
2040 | argument. */ | |
2041 | static char *initial_tz; | |
2042 | ||
143cb9a9 | 2043 | DEFUN ("set-time-zone-rule", Fset_time_zone_rule, Sset_time_zone_rule, 1, 1, 0, |
7ee72033 | 2044 | doc: /* Set the local time zone using TZ, a string specifying a time zone rule. |
a1f17501 | 2045 | If TZ is nil, use implementation-defined default time zone information. |
37e11a63 CY |
2046 | If TZ is t, use Universal Time. |
2047 | ||
2048 | Instead of calling this function, you typically want (setenv "TZ" TZ). | |
2049 | That changes both the environment of the Emacs process and the | |
2050 | variable `process-environment', whereas `set-time-zone-rule' affects | |
2051 | only the former. */) | |
5842a27b | 2052 | (Lisp_Object tz) |
143cb9a9 | 2053 | { |
8ea90aa3 | 2054 | const char *tzstring; |
143cb9a9 | 2055 | |
a03fc5a6 JR |
2056 | /* When called for the first time, save the original TZ. */ |
2057 | if (!environbuf) | |
2058 | initial_tz = (char *) getenv ("TZ"); | |
2059 | ||
143cb9a9 | 2060 | if (NILP (tz)) |
a03fc5a6 | 2061 | tzstring = initial_tz; |
2e34157c | 2062 | else if (EQ (tz, Qt)) |
085e9fcb | 2063 | tzstring = "UTC0"; |
143cb9a9 RS |
2064 | else |
2065 | { | |
b7826503 | 2066 | CHECK_STRING (tz); |
51b59d79 | 2067 | tzstring = SSDATA (tz); |
143cb9a9 RS |
2068 | } |
2069 | ||
c59b5089 | 2070 | set_time_zone_rule (tzstring); |
81d40c92 | 2071 | xfree (environbuf); |
c59b5089 PE |
2072 | environbuf = environ; |
2073 | ||
2074 | return Qnil; | |
2075 | } | |
2076 | ||
e0bf9faf PE |
2077 | #ifdef LOCALTIME_CACHE |
2078 | ||
2079 | /* These two values are known to load tz files in buggy implementations, | |
2080 | i.e. Solaris 1 executables running under either Solaris 1 or Solaris 2. | |
1155c453 | 2081 | Their values shouldn't matter in non-buggy implementations. |
34a7a267 | 2082 | We don't use string literals for these strings, |
1155c453 RS |
2083 | since if a string in the environment is in readonly |
2084 | storage, it runs afoul of bugs in SVR4 and Solaris 2.3. | |
2085 | See Sun bugs 1113095 and 1114114, ``Timezone routines | |
2086 | improperly modify environment''. */ | |
2087 | ||
e0bf9faf PE |
2088 | static char set_time_zone_rule_tz1[] = "TZ=GMT+0"; |
2089 | static char set_time_zone_rule_tz2[] = "TZ=GMT+1"; | |
2090 | ||
2091 | #endif | |
1155c453 | 2092 | |
c59b5089 PE |
2093 | /* Set the local time zone rule to TZSTRING. |
2094 | This allocates memory into `environ', which it is the caller's | |
2095 | responsibility to free. */ | |
acb7cc89 | 2096 | |
a92ae0ce | 2097 | void |
a8fe7202 | 2098 | set_time_zone_rule (const char *tzstring) |
c59b5089 | 2099 | { |
c9f8d652 | 2100 | ptrdiff_t envptrs; |
c59b5089 PE |
2101 | char **from, **to, **newenv; |
2102 | ||
aafe5147 | 2103 | /* Make the ENVIRON vector longer with room for TZSTRING. */ |
143cb9a9 RS |
2104 | for (from = environ; *from; from++) |
2105 | continue; | |
2106 | envptrs = from - environ + 2; | |
2107 | newenv = to = (char **) xmalloc (envptrs * sizeof (char *) | |
2108 | + (tzstring ? strlen (tzstring) + 4 : 0)); | |
aafe5147 RS |
2109 | |
2110 | /* Add TZSTRING to the end of environ, as a value for TZ. */ | |
143cb9a9 RS |
2111 | if (tzstring) |
2112 | { | |
2113 | char *t = (char *) (to + envptrs); | |
2114 | strcpy (t, "TZ="); | |
2115 | strcat (t, tzstring); | |
2116 | *to++ = t; | |
2117 | } | |
2118 | ||
aafe5147 RS |
2119 | /* Copy the old environ vector elements into NEWENV, |
2120 | but don't copy the TZ variable. | |
2121 | So we have only one definition of TZ, which came from TZSTRING. */ | |
143cb9a9 RS |
2122 | for (from = environ; *from; from++) |
2123 | if (strncmp (*from, "TZ=", 3) != 0) | |
2124 | *to++ = *from; | |
2125 | *to = 0; | |
2126 | ||
2127 | environ = newenv; | |
143cb9a9 | 2128 | |
aafe5147 RS |
2129 | /* If we do have a TZSTRING, NEWENV points to the vector slot where |
2130 | the TZ variable is stored. If we do not have a TZSTRING, | |
2131 | TO points to the vector slot which has the terminating null. */ | |
2132 | ||
143cb9a9 | 2133 | #ifdef LOCALTIME_CACHE |
aafe5147 RS |
2134 | { |
2135 | /* In SunOS 4.1.3_U1 and 4.1.4, if TZ has a value like | |
2136 | "US/Pacific" that loads a tz file, then changes to a value like | |
2137 | "XXX0" that does not load a tz file, and then changes back to | |
2138 | its original value, the last change is (incorrectly) ignored. | |
2139 | Also, if TZ changes twice in succession to values that do | |
2140 | not load a tz file, tzset can dump core (see Sun bug#1225179). | |
2141 | The following code works around these bugs. */ | |
2142 | ||
aafe5147 RS |
2143 | if (tzstring) |
2144 | { | |
2145 | /* Temporarily set TZ to a value that loads a tz file | |
2146 | and that differs from tzstring. */ | |
2147 | char *tz = *newenv; | |
1155c453 RS |
2148 | *newenv = (strcmp (tzstring, set_time_zone_rule_tz1 + 3) == 0 |
2149 | ? set_time_zone_rule_tz2 : set_time_zone_rule_tz1); | |
aafe5147 RS |
2150 | tzset (); |
2151 | *newenv = tz; | |
2152 | } | |
2153 | else | |
2154 | { | |
2155 | /* The implied tzstring is unknown, so temporarily set TZ to | |
2156 | two different values that each load a tz file. */ | |
1155c453 | 2157 | *to = set_time_zone_rule_tz1; |
aafe5147 RS |
2158 | to[1] = 0; |
2159 | tzset (); | |
1155c453 | 2160 | *to = set_time_zone_rule_tz2; |
aafe5147 RS |
2161 | tzset (); |
2162 | *to = 0; | |
2163 | } | |
2164 | ||
2165 | /* Now TZ has the desired value, and tzset can be invoked safely. */ | |
2166 | } | |
2167 | ||
143cb9a9 RS |
2168 | tzset (); |
2169 | #endif | |
143cb9a9 | 2170 | } |
35692fe0 | 2171 | \f |
fb8106e8 KH |
2172 | /* Insert NARGS Lisp objects in the array ARGS by calling INSERT_FUNC |
2173 | (if a type of object is Lisp_Int) or INSERT_FROM_STRING_FUNC (if a | |
2174 | type of object is Lisp_String). INHERIT is passed to | |
2175 | INSERT_FROM_STRING_FUNC as the last argument. */ | |
2176 | ||
acb7cc89 | 2177 | static void |
9628fed7 | 2178 | general_insert_function (void (*insert_func) |
b68864e5 | 2179 | (const char *, EMACS_INT), |
9628fed7 SM |
2180 | void (*insert_from_string_func) |
2181 | (Lisp_Object, EMACS_INT, EMACS_INT, | |
2182 | EMACS_INT, EMACS_INT, int), | |
f66c7cf8 | 2183 | int inherit, ptrdiff_t nargs, Lisp_Object *args) |
fb8106e8 | 2184 | { |
f66c7cf8 | 2185 | ptrdiff_t argnum; |
fb8106e8 KH |
2186 | register Lisp_Object val; |
2187 | ||
2188 | for (argnum = 0; argnum < nargs; argnum++) | |
2189 | { | |
2190 | val = args[argnum]; | |
1b9c91ed | 2191 | if (CHARACTERP (val)) |
fb8106e8 | 2192 | { |
13bdea59 | 2193 | int c = XFASTINT (val); |
d5c2c403 | 2194 | unsigned char str[MAX_MULTIBYTE_LENGTH]; |
fb8106e8 KH |
2195 | int len; |
2196 | ||
4b4deea2 | 2197 | if (!NILP (BVAR (current_buffer, enable_multibyte_characters))) |
13bdea59 | 2198 | len = CHAR_STRING (c, str); |
fb8106e8 | 2199 | else |
13c148b8 | 2200 | { |
abbd3d23 | 2201 | str[0] = ASCII_CHAR_P (c) ? c : multibyte_char_to_unibyte (c); |
13c148b8 KH |
2202 | len = 1; |
2203 | } | |
b68864e5 | 2204 | (*insert_func) ((char *) str, len); |
fb8106e8 KH |
2205 | } |
2206 | else if (STRINGP (val)) | |
2207 | { | |
1f24f4fd | 2208 | (*insert_from_string_func) (val, 0, 0, |
d5db4077 KR |
2209 | SCHARS (val), |
2210 | SBYTES (val), | |
1f24f4fd | 2211 | inherit); |
fb8106e8 KH |
2212 | } |
2213 | else | |
b7f34213 | 2214 | wrong_type_argument (Qchar_or_string_p, val); |
fb8106e8 KH |
2215 | } |
2216 | } | |
2217 | ||
35692fe0 | 2218 | void |
971de7fb | 2219 | insert1 (Lisp_Object arg) |
35692fe0 JB |
2220 | { |
2221 | Finsert (1, &arg); | |
2222 | } | |
2223 | ||
52b14ac0 JB |
2224 | |
2225 | /* Callers passing one argument to Finsert need not gcpro the | |
2226 | argument "array", since the only element of the array will | |
2227 | not be used after calling insert or insert_from_string, so | |
2228 | we don't care if it gets trashed. */ | |
2229 | ||
a7ca3326 | 2230 | DEFUN ("insert", Finsert, Sinsert, 0, MANY, 0, |
7ee72033 | 2231 | doc: /* Insert the arguments, either strings or characters, at point. |
a1f17501 PJ |
2232 | Point and before-insertion markers move forward to end up |
2233 | after the inserted text. | |
2234 | Any other markers at the point of insertion remain before the text. | |
2235 | ||
2236 | If the current buffer is multibyte, unibyte strings are converted | |
72bb55c6 | 2237 | to multibyte for insertion (see `string-make-multibyte'). |
a1f17501 | 2238 | If the current buffer is unibyte, multibyte strings are converted |
72bb55c6 KS |
2239 | to unibyte for insertion (see `string-make-unibyte'). |
2240 | ||
2241 | When operating on binary data, it may be necessary to preserve the | |
2242 | original bytes of a unibyte string when inserting it into a multibyte | |
2243 | buffer; to accomplish this, apply `string-as-multibyte' to the string | |
2244 | and insert the result. | |
4bfbe194 MB |
2245 | |
2246 | usage: (insert &rest ARGS) */) | |
f66c7cf8 | 2247 | (ptrdiff_t nargs, Lisp_Object *args) |
35692fe0 | 2248 | { |
fb8106e8 | 2249 | general_insert_function (insert, insert_from_string, 0, nargs, args); |
be91036a RS |
2250 | return Qnil; |
2251 | } | |
2252 | ||
2253 | DEFUN ("insert-and-inherit", Finsert_and_inherit, Sinsert_and_inherit, | |
2254 | 0, MANY, 0, | |
7ee72033 | 2255 | doc: /* Insert the arguments at point, inheriting properties from adjoining text. |
a1f17501 PJ |
2256 | Point and before-insertion markers move forward to end up |
2257 | after the inserted text. | |
2258 | Any other markers at the point of insertion remain before the text. | |
2259 | ||
2260 | If the current buffer is multibyte, unibyte strings are converted | |
2261 | to multibyte for insertion (see `unibyte-char-to-multibyte'). | |
2262 | If the current buffer is unibyte, multibyte strings are converted | |
4bfbe194 MB |
2263 | to unibyte for insertion. |
2264 | ||
2265 | usage: (insert-and-inherit &rest ARGS) */) | |
f66c7cf8 | 2266 | (ptrdiff_t nargs, Lisp_Object *args) |
be91036a | 2267 | { |
fb8106e8 KH |
2268 | general_insert_function (insert_and_inherit, insert_from_string, 1, |
2269 | nargs, args); | |
35692fe0 JB |
2270 | return Qnil; |
2271 | } | |
2272 | ||
2273 | DEFUN ("insert-before-markers", Finsert_before_markers, Sinsert_before_markers, 0, MANY, 0, | |
7ee72033 | 2274 | doc: /* Insert strings or characters at point, relocating markers after the text. |
a1f17501 PJ |
2275 | Point and markers move forward to end up after the inserted text. |
2276 | ||
2277 | If the current buffer is multibyte, unibyte strings are converted | |
2278 | to multibyte for insertion (see `unibyte-char-to-multibyte'). | |
2279 | If the current buffer is unibyte, multibyte strings are converted | |
4bfbe194 MB |
2280 | to unibyte for insertion. |
2281 | ||
2282 | usage: (insert-before-markers &rest ARGS) */) | |
f66c7cf8 | 2283 | (ptrdiff_t nargs, Lisp_Object *args) |
35692fe0 | 2284 | { |
fb8106e8 KH |
2285 | general_insert_function (insert_before_markers, |
2286 | insert_from_string_before_markers, 0, | |
2287 | nargs, args); | |
be91036a RS |
2288 | return Qnil; |
2289 | } | |
2290 | ||
a0d76c27 EN |
2291 | DEFUN ("insert-before-markers-and-inherit", Finsert_and_inherit_before_markers, |
2292 | Sinsert_and_inherit_before_markers, 0, MANY, 0, | |
7ee72033 | 2293 | doc: /* Insert text at point, relocating markers and inheriting properties. |
a1f17501 PJ |
2294 | Point and markers move forward to end up after the inserted text. |
2295 | ||
2296 | If the current buffer is multibyte, unibyte strings are converted | |
2297 | to multibyte for insertion (see `unibyte-char-to-multibyte'). | |
2298 | If the current buffer is unibyte, multibyte strings are converted | |
4bfbe194 MB |
2299 | to unibyte for insertion. |
2300 | ||
2301 | usage: (insert-before-markers-and-inherit &rest ARGS) */) | |
f66c7cf8 | 2302 | (ptrdiff_t nargs, Lisp_Object *args) |
be91036a | 2303 | { |
fb8106e8 KH |
2304 | general_insert_function (insert_before_markers_and_inherit, |
2305 | insert_from_string_before_markers, 1, | |
2306 | nargs, args); | |
35692fe0 JB |
2307 | return Qnil; |
2308 | } | |
2309 | \f | |
a7ca3326 | 2310 | DEFUN ("insert-char", Finsert_char, Sinsert_char, 2, 3, 0, |
9671c13a | 2311 | doc: /* Insert COUNT copies of CHARACTER. |
a1f17501 PJ |
2312 | Point, and before-insertion markers, are relocated as in the function `insert'. |
2313 | The optional third arg INHERIT, if non-nil, says to inherit text properties | |
7ee72033 | 2314 | from adjoining text, if those properties are sticky. */) |
5842a27b | 2315 | (Lisp_Object character, Lisp_Object count, Lisp_Object inherit) |
35692fe0 | 2316 | { |
21d890a4 | 2317 | int i, stringlen; |
29cdc13e | 2318 | register EMACS_INT n; |
13bdea59 | 2319 | int c, len; |
d5c2c403 | 2320 | unsigned char str[MAX_MULTIBYTE_LENGTH]; |
21d890a4 | 2321 | char string[4000]; |
35692fe0 | 2322 | |
13bdea59 | 2323 | CHECK_CHARACTER (character); |
b7826503 | 2324 | CHECK_NUMBER (count); |
13bdea59 | 2325 | c = XFASTINT (character); |
35692fe0 | 2326 | |
4b4deea2 | 2327 | if (!NILP (BVAR (current_buffer, enable_multibyte_characters))) |
13bdea59 | 2328 | len = CHAR_STRING (c, str); |
fb8106e8 | 2329 | else |
13bdea59 | 2330 | str[0] = c, len = 1; |
2e6813b0 PE |
2331 | if (XINT (count) <= 0) |
2332 | return Qnil; | |
d1f3d2af | 2333 | if (BUF_BYTES_MAX / len < XINT (count)) |
99561444 | 2334 | buffer_overflow (); |
fb8106e8 | 2335 | n = XINT (count) * len; |
21d890a4 | 2336 | stringlen = min (n, sizeof string - sizeof string % len); |
545b49b4 | 2337 | for (i = 0; i < stringlen; i++) |
fb8106e8 | 2338 | string[i] = str[i % len]; |
21d890a4 | 2339 | while (n > stringlen) |
35692fe0 | 2340 | { |
54e42e2d | 2341 | QUIT; |
e2eeabbb | 2342 | if (!NILP (inherit)) |
545b49b4 | 2343 | insert_and_inherit (string, stringlen); |
e2eeabbb | 2344 | else |
545b49b4 PE |
2345 | insert (string, stringlen); |
2346 | n -= stringlen; | |
35692fe0 | 2347 | } |
21d890a4 PE |
2348 | if (!NILP (inherit)) |
2349 | insert_and_inherit (string, n); | |
2350 | else | |
2351 | insert (string, n); | |
35692fe0 JB |
2352 | return Qnil; |
2353 | } | |
2354 | ||
48ef988f KH |
2355 | DEFUN ("insert-byte", Finsert_byte, Sinsert_byte, 2, 3, 0, |
2356 | doc: /* Insert COUNT (second arg) copies of BYTE (first arg). | |
2357 | Both arguments are required. | |
2358 | BYTE is a number of the range 0..255. | |
2359 | ||
2360 | If BYTE is 128..255 and the current buffer is multibyte, the | |
2361 | corresponding eight-bit character is inserted. | |
2362 | ||
2363 | Point, and before-insertion markers, are relocated as in the function `insert'. | |
2364 | The optional third arg INHERIT, if non-nil, says to inherit text properties | |
2365 | from adjoining text, if those properties are sticky. */) | |
5842a27b | 2366 | (Lisp_Object byte, Lisp_Object count, Lisp_Object inherit) |
48ef988f KH |
2367 | { |
2368 | CHECK_NUMBER (byte); | |
2369 | if (XINT (byte) < 0 || XINT (byte) > 255) | |
2370 | args_out_of_range_3 (byte, make_number (0), make_number (255)); | |
2371 | if (XINT (byte) >= 128 | |
4b4deea2 | 2372 | && ! NILP (BVAR (current_buffer, enable_multibyte_characters))) |
48ef988f | 2373 | XSETFASTINT (byte, BYTE8_TO_CHAR (XINT (byte))); |
ed398b0a | 2374 | return Finsert_char (byte, count, inherit); |
48ef988f KH |
2375 | } |
2376 | ||
35692fe0 | 2377 | \f |
ffd56f97 JB |
2378 | /* Making strings from buffer contents. */ |
2379 | ||
2380 | /* Return a Lisp_String containing the text of the current buffer from | |
74d6d8c5 | 2381 | START to END. If text properties are in use and the current buffer |
eb8c3be9 | 2382 | has properties in the range specified, the resulting string will also |
260e2e2a | 2383 | have them, if PROPS is nonzero. |
ffd56f97 JB |
2384 | |
2385 | We don't want to use plain old make_string here, because it calls | |
2386 | make_uninit_string, which can cause the buffer arena to be | |
2387 | compacted. make_string has no way of knowing that the data has | |
2388 | been moved, and thus copies the wrong data into the string. This | |
2389 | doesn't effect most of the other users of make_string, so it should | |
2390 | be left as is. But we should use this function when conjuring | |
2391 | buffer substrings. */ | |
74d6d8c5 | 2392 | |
ffd56f97 | 2393 | Lisp_Object |
413d18e7 | 2394 | make_buffer_string (EMACS_INT start, EMACS_INT end, int props) |
ffd56f97 | 2395 | { |
413d18e7 EZ |
2396 | EMACS_INT start_byte = CHAR_TO_BYTE (start); |
2397 | EMACS_INT end_byte = CHAR_TO_BYTE (end); | |
ffd56f97 | 2398 | |
88441c8e RS |
2399 | return make_buffer_string_both (start, start_byte, end, end_byte, props); |
2400 | } | |
2401 | ||
2402 | /* Return a Lisp_String containing the text of the current buffer from | |
2403 | START / START_BYTE to END / END_BYTE. | |
2404 | ||
2405 | If text properties are in use and the current buffer | |
2406 | has properties in the range specified, the resulting string will also | |
2407 | have them, if PROPS is nonzero. | |
2408 | ||
2409 | We don't want to use plain old make_string here, because it calls | |
2410 | make_uninit_string, which can cause the buffer arena to be | |
2411 | compacted. make_string has no way of knowing that the data has | |
2412 | been moved, and thus copies the wrong data into the string. This | |
2413 | doesn't effect most of the other users of make_string, so it should | |
2414 | be left as is. But we should use this function when conjuring | |
2415 | buffer substrings. */ | |
2416 | ||
2417 | Lisp_Object | |
413d18e7 EZ |
2418 | make_buffer_string_both (EMACS_INT start, EMACS_INT start_byte, |
2419 | EMACS_INT end, EMACS_INT end_byte, int props) | |
88441c8e RS |
2420 | { |
2421 | Lisp_Object result, tem, tem1; | |
2422 | ||
ffd56f97 JB |
2423 | if (start < GPT && GPT < end) |
2424 | move_gap (start); | |
2425 | ||
4b4deea2 | 2426 | if (! NILP (BVAR (current_buffer, enable_multibyte_characters))) |
5f75e666 RS |
2427 | result = make_uninit_multibyte_string (end - start, end_byte - start_byte); |
2428 | else | |
2429 | result = make_uninit_string (end - start); | |
72af86bd | 2430 | memcpy (SDATA (result), BYTE_POS_ADDR (start_byte), end_byte - start_byte); |
ffd56f97 | 2431 | |
260e2e2a | 2432 | /* If desired, update and copy the text properties. */ |
260e2e2a KH |
2433 | if (props) |
2434 | { | |
2435 | update_buffer_properties (start, end); | |
2436 | ||
2437 | tem = Fnext_property_change (make_number (start), Qnil, make_number (end)); | |
2438 | tem1 = Ftext_properties_at (make_number (start), Qnil); | |
2439 | ||
2440 | if (XINT (tem) != end || !NILP (tem1)) | |
ec1c14f6 RS |
2441 | copy_intervals_to_string (result, current_buffer, start, |
2442 | end - start); | |
260e2e2a | 2443 | } |
74d6d8c5 | 2444 | |
ffd56f97 JB |
2445 | return result; |
2446 | } | |
35692fe0 | 2447 | |
260e2e2a KH |
2448 | /* Call Vbuffer_access_fontify_functions for the range START ... END |
2449 | in the current buffer, if necessary. */ | |
2450 | ||
2451 | static void | |
29cdc13e | 2452 | update_buffer_properties (EMACS_INT start, EMACS_INT end) |
260e2e2a | 2453 | { |
260e2e2a KH |
2454 | /* If this buffer has some access functions, |
2455 | call them, specifying the range of the buffer being accessed. */ | |
2456 | if (!NILP (Vbuffer_access_fontify_functions)) | |
2457 | { | |
2458 | Lisp_Object args[3]; | |
2459 | Lisp_Object tem; | |
2460 | ||
2461 | args[0] = Qbuffer_access_fontify_functions; | |
2462 | XSETINT (args[1], start); | |
2463 | XSETINT (args[2], end); | |
2464 | ||
2465 | /* But don't call them if we can tell that the work | |
2466 | has already been done. */ | |
2467 | if (!NILP (Vbuffer_access_fontified_property)) | |
2468 | { | |
2469 | tem = Ftext_property_any (args[1], args[2], | |
2470 | Vbuffer_access_fontified_property, | |
2471 | Qnil, Qnil); | |
2472 | if (! NILP (tem)) | |
ced1d19a | 2473 | Frun_hook_with_args (3, args); |
260e2e2a KH |
2474 | } |
2475 | else | |
ced1d19a | 2476 | Frun_hook_with_args (3, args); |
260e2e2a | 2477 | } |
260e2e2a KH |
2478 | } |
2479 | ||
a7ca3326 | 2480 | DEFUN ("buffer-substring", Fbuffer_substring, Sbuffer_substring, 2, 2, 0, |
7ee72033 | 2481 | doc: /* Return the contents of part of the current buffer as a string. |
a1f17501 PJ |
2482 | The two arguments START and END are character positions; |
2483 | they can be in either order. | |
2484 | The string returned is multibyte if the buffer is multibyte. | |
2485 | ||
2486 | This function copies the text properties of that part of the buffer | |
2487 | into the result string; if you don't want the text properties, | |
7ee72033 | 2488 | use `buffer-substring-no-properties' instead. */) |
5842a27b | 2489 | (Lisp_Object start, Lisp_Object end) |
35692fe0 | 2490 | { |
413d18e7 | 2491 | register EMACS_INT b, e; |
35692fe0 | 2492 | |
2591ec64 EN |
2493 | validate_region (&start, &end); |
2494 | b = XINT (start); | |
2495 | e = XINT (end); | |
35692fe0 | 2496 | |
2591ec64 | 2497 | return make_buffer_string (b, e, 1); |
260e2e2a KH |
2498 | } |
2499 | ||
2500 | DEFUN ("buffer-substring-no-properties", Fbuffer_substring_no_properties, | |
2501 | Sbuffer_substring_no_properties, 2, 2, 0, | |
7ee72033 | 2502 | doc: /* Return the characters of part of the buffer, without the text properties. |
a1f17501 | 2503 | The two arguments START and END are character positions; |
7ee72033 | 2504 | they can be in either order. */) |
5842a27b | 2505 | (Lisp_Object start, Lisp_Object end) |
260e2e2a | 2506 | { |
413d18e7 | 2507 | register EMACS_INT b, e; |
260e2e2a | 2508 | |
2591ec64 EN |
2509 | validate_region (&start, &end); |
2510 | b = XINT (start); | |
2511 | e = XINT (end); | |
260e2e2a | 2512 | |
2591ec64 | 2513 | return make_buffer_string (b, e, 0); |
35692fe0 JB |
2514 | } |
2515 | ||
a7ca3326 | 2516 | DEFUN ("buffer-string", Fbuffer_string, Sbuffer_string, 0, 0, 0, |
7ee72033 | 2517 | doc: /* Return the contents of the current buffer as a string. |
a1f17501 | 2518 | If narrowing is in effect, this function returns only the visible part |
7ee72033 | 2519 | of the buffer. */) |
5842a27b | 2520 | (void) |
35692fe0 | 2521 | { |
0daf6e8d | 2522 | return make_buffer_string (BEGV, ZV, 1); |
35692fe0 JB |
2523 | } |
2524 | ||
2525 | DEFUN ("insert-buffer-substring", Finsert_buffer_substring, Sinsert_buffer_substring, | |
deb8e082 | 2526 | 1, 3, 0, |
658ec670 | 2527 | doc: /* Insert before point a substring of the contents of BUFFER. |
a1f17501 | 2528 | BUFFER may be a buffer or a buffer name. |
412f1fab JB |
2529 | Arguments START and END are character positions specifying the substring. |
2530 | They default to the values of (point-min) and (point-max) in BUFFER. */) | |
5842a27b | 2531 | (Lisp_Object buffer, Lisp_Object start, Lisp_Object end) |
35692fe0 | 2532 | { |
29cdc13e | 2533 | register EMACS_INT b, e, temp; |
260e2e2a | 2534 | register struct buffer *bp, *obuf; |
658ec670 | 2535 | Lisp_Object buf; |
35692fe0 | 2536 | |
658ec670 JB |
2537 | buf = Fget_buffer (buffer); |
2538 | if (NILP (buf)) | |
2539 | nsberror (buffer); | |
2540 | bp = XBUFFER (buf); | |
4b4deea2 | 2541 | if (NILP (BVAR (bp, name))) |
93b62e82 | 2542 | error ("Selecting deleted buffer"); |
35692fe0 | 2543 | |
2591ec64 EN |
2544 | if (NILP (start)) |
2545 | b = BUF_BEGV (bp); | |
35692fe0 JB |
2546 | else |
2547 | { | |
b7826503 | 2548 | CHECK_NUMBER_COERCE_MARKER (start); |
2591ec64 | 2549 | b = XINT (start); |
35692fe0 | 2550 | } |
2591ec64 EN |
2551 | if (NILP (end)) |
2552 | e = BUF_ZV (bp); | |
35692fe0 JB |
2553 | else |
2554 | { | |
b7826503 | 2555 | CHECK_NUMBER_COERCE_MARKER (end); |
2591ec64 | 2556 | e = XINT (end); |
35692fe0 JB |
2557 | } |
2558 | ||
2591ec64 EN |
2559 | if (b > e) |
2560 | temp = b, b = e, e = temp; | |
35692fe0 | 2561 | |
2591ec64 EN |
2562 | if (!(BUF_BEGV (bp) <= b && e <= BUF_ZV (bp))) |
2563 | args_out_of_range (start, end); | |
35692fe0 | 2564 | |
260e2e2a KH |
2565 | obuf = current_buffer; |
2566 | set_buffer_internal_1 (bp); | |
2591ec64 | 2567 | update_buffer_properties (b, e); |
260e2e2a KH |
2568 | set_buffer_internal_1 (obuf); |
2569 | ||
2591ec64 | 2570 | insert_from_buffer (bp, b, e - b, 0); |
35692fe0 JB |
2571 | return Qnil; |
2572 | } | |
e9cf2084 RS |
2573 | |
2574 | DEFUN ("compare-buffer-substrings", Fcompare_buffer_substrings, Scompare_buffer_substrings, | |
deb8e082 | 2575 | 6, 6, 0, |
7ee72033 | 2576 | doc: /* Compare two substrings of two buffers; return result as number. |
a1f17501 PJ |
2577 | the value is -N if first string is less after N-1 chars, |
2578 | +N if first string is greater after N-1 chars, or 0 if strings match. | |
2579 | Each substring is represented as three arguments: BUFFER, START and END. | |
2580 | That makes six args in all, three for each substring. | |
2581 | ||
2582 | The value of `case-fold-search' in the current buffer | |
7ee72033 | 2583 | determines whether case is significant or ignored. */) |
5842a27b | 2584 | (Lisp_Object buffer1, Lisp_Object start1, Lisp_Object end1, Lisp_Object buffer2, Lisp_Object start2, Lisp_Object end2) |
e9cf2084 | 2585 | { |
29cdc13e | 2586 | register EMACS_INT begp1, endp1, begp2, endp2, temp; |
e9cf2084 | 2587 | register struct buffer *bp1, *bp2; |
1149fd6f | 2588 | register Lisp_Object trt |
4b4deea2 TT |
2589 | = (!NILP (BVAR (current_buffer, case_fold_search)) |
2590 | ? BVAR (current_buffer, case_canon_table) : Qnil); | |
29cdc13e EZ |
2591 | EMACS_INT chars = 0; |
2592 | EMACS_INT i1, i2, i1_byte, i2_byte; | |
e9cf2084 RS |
2593 | |
2594 | /* Find the first buffer and its substring. */ | |
2595 | ||
2596 | if (NILP (buffer1)) | |
2597 | bp1 = current_buffer; | |
2598 | else | |
2599 | { | |
3fff2dfa RS |
2600 | Lisp_Object buf1; |
2601 | buf1 = Fget_buffer (buffer1); | |
2602 | if (NILP (buf1)) | |
2603 | nsberror (buffer1); | |
2604 | bp1 = XBUFFER (buf1); | |
4b4deea2 | 2605 | if (NILP (BVAR (bp1, name))) |
93b62e82 | 2606 | error ("Selecting deleted buffer"); |
e9cf2084 RS |
2607 | } |
2608 | ||
2609 | if (NILP (start1)) | |
2610 | begp1 = BUF_BEGV (bp1); | |
2611 | else | |
2612 | { | |
b7826503 | 2613 | CHECK_NUMBER_COERCE_MARKER (start1); |
e9cf2084 RS |
2614 | begp1 = XINT (start1); |
2615 | } | |
2616 | if (NILP (end1)) | |
2617 | endp1 = BUF_ZV (bp1); | |
2618 | else | |
2619 | { | |
b7826503 | 2620 | CHECK_NUMBER_COERCE_MARKER (end1); |
e9cf2084 RS |
2621 | endp1 = XINT (end1); |
2622 | } | |
2623 | ||
2624 | if (begp1 > endp1) | |
2625 | temp = begp1, begp1 = endp1, endp1 = temp; | |
2626 | ||
2627 | if (!(BUF_BEGV (bp1) <= begp1 | |
2628 | && begp1 <= endp1 | |
2629 | && endp1 <= BUF_ZV (bp1))) | |
2630 | args_out_of_range (start1, end1); | |
2631 | ||
2632 | /* Likewise for second substring. */ | |
2633 | ||
2634 | if (NILP (buffer2)) | |
2635 | bp2 = current_buffer; | |
2636 | else | |
2637 | { | |
3fff2dfa RS |
2638 | Lisp_Object buf2; |
2639 | buf2 = Fget_buffer (buffer2); | |
2640 | if (NILP (buf2)) | |
2641 | nsberror (buffer2); | |
3b1fdd85 | 2642 | bp2 = XBUFFER (buf2); |
4b4deea2 | 2643 | if (NILP (BVAR (bp2, name))) |
93b62e82 | 2644 | error ("Selecting deleted buffer"); |
e9cf2084 RS |
2645 | } |
2646 | ||
2647 | if (NILP (start2)) | |
2648 | begp2 = BUF_BEGV (bp2); | |
2649 | else | |
2650 | { | |
b7826503 | 2651 | CHECK_NUMBER_COERCE_MARKER (start2); |
e9cf2084 RS |
2652 | begp2 = XINT (start2); |
2653 | } | |
2654 | if (NILP (end2)) | |
2655 | endp2 = BUF_ZV (bp2); | |
2656 | else | |
2657 | { | |
b7826503 | 2658 | CHECK_NUMBER_COERCE_MARKER (end2); |
e9cf2084 RS |
2659 | endp2 = XINT (end2); |
2660 | } | |
2661 | ||
2662 | if (begp2 > endp2) | |
2663 | temp = begp2, begp2 = endp2, endp2 = temp; | |
2664 | ||
2665 | if (!(BUF_BEGV (bp2) <= begp2 | |
2666 | && begp2 <= endp2 | |
2667 | && endp2 <= BUF_ZV (bp2))) | |
2668 | args_out_of_range (start2, end2); | |
2669 | ||
07422a12 RS |
2670 | i1 = begp1; |
2671 | i2 = begp2; | |
2672 | i1_byte = buf_charpos_to_bytepos (bp1, i1); | |
2673 | i2_byte = buf_charpos_to_bytepos (bp2, i2); | |
e9cf2084 | 2674 | |
07422a12 | 2675 | while (i1 < endp1 && i2 < endp2) |
e9cf2084 | 2676 | { |
07422a12 RS |
2677 | /* When we find a mismatch, we must compare the |
2678 | characters, not just the bytes. */ | |
2679 | int c1, c2; | |
ec1c14f6 | 2680 | |
2221451f RS |
2681 | QUIT; |
2682 | ||
4b4deea2 | 2683 | if (! NILP (BVAR (bp1, enable_multibyte_characters))) |
07422a12 RS |
2684 | { |
2685 | c1 = BUF_FETCH_MULTIBYTE_CHAR (bp1, i1_byte); | |
2686 | BUF_INC_POS (bp1, i1_byte); | |
2687 | i1++; | |
2688 | } | |
2689 | else | |
2690 | { | |
2691 | c1 = BUF_FETCH_BYTE (bp1, i1); | |
4c0354d7 | 2692 | MAKE_CHAR_MULTIBYTE (c1); |
07422a12 RS |
2693 | i1++; |
2694 | } | |
2695 | ||
4b4deea2 | 2696 | if (! NILP (BVAR (bp2, enable_multibyte_characters))) |
07422a12 RS |
2697 | { |
2698 | c2 = BUF_FETCH_MULTIBYTE_CHAR (bp2, i2_byte); | |
2699 | BUF_INC_POS (bp2, i2_byte); | |
2700 | i2++; | |
2701 | } | |
2702 | else | |
2703 | { | |
2704 | c2 = BUF_FETCH_BYTE (bp2, i2); | |
4c0354d7 | 2705 | MAKE_CHAR_MULTIBYTE (c2); |
07422a12 RS |
2706 | i2++; |
2707 | } | |
ec1c14f6 | 2708 | |
1149fd6f | 2709 | if (!NILP (trt)) |
e9cf2084 | 2710 | { |
1149fd6f SM |
2711 | c1 = CHAR_TABLE_TRANSLATE (trt, c1); |
2712 | c2 = CHAR_TABLE_TRANSLATE (trt, c2); | |
e9cf2084 RS |
2713 | } |
2714 | if (c1 < c2) | |
ec1c14f6 | 2715 | return make_number (- 1 - chars); |
e9cf2084 | 2716 | if (c1 > c2) |
ec1c14f6 | 2717 | return make_number (chars + 1); |
07422a12 RS |
2718 | |
2719 | chars++; | |
e9cf2084 RS |
2720 | } |
2721 | ||
2722 | /* The strings match as far as they go. | |
2723 | If one is shorter, that one is less. */ | |
07422a12 | 2724 | if (chars < endp1 - begp1) |
ec1c14f6 | 2725 | return make_number (chars + 1); |
07422a12 | 2726 | else if (chars < endp2 - begp2) |
ec1c14f6 | 2727 | return make_number (- chars - 1); |
e9cf2084 RS |
2728 | |
2729 | /* Same length too => they are equal. */ | |
2730 | return make_number (0); | |
2731 | } | |
35692fe0 | 2732 | \f |
d5a539cd | 2733 | static Lisp_Object |
971de7fb | 2734 | subst_char_in_region_unwind (Lisp_Object arg) |
d5a539cd | 2735 | { |
4b4deea2 | 2736 | return BVAR (current_buffer, undo_list) = arg; |
d5a539cd RS |
2737 | } |
2738 | ||
c8e76b47 | 2739 | static Lisp_Object |
971de7fb | 2740 | subst_char_in_region_unwind_1 (Lisp_Object arg) |
c8e76b47 | 2741 | { |
4b4deea2 | 2742 | return BVAR (current_buffer, filename) = arg; |
c8e76b47 RS |
2743 | } |
2744 | ||
35692fe0 | 2745 | DEFUN ("subst-char-in-region", Fsubst_char_in_region, |
deb8e082 | 2746 | Ssubst_char_in_region, 4, 5, 0, |
7ee72033 | 2747 | doc: /* From START to END, replace FROMCHAR with TOCHAR each time it occurs. |
a1f17501 PJ |
2748 | If optional arg NOUNDO is non-nil, don't record this change for undo |
2749 | and don't mark the buffer as really changed. | |
7ee72033 | 2750 | Both characters must have the same length of multi-byte form. */) |
5842a27b | 2751 | (Lisp_Object start, Lisp_Object end, Lisp_Object fromchar, Lisp_Object tochar, Lisp_Object noundo) |
35692fe0 | 2752 | { |
c8a66ab8 | 2753 | register EMACS_INT pos, pos_byte, stop, i, len, end_byte; |
0f2e2a3b SM |
2754 | /* Keep track of the first change in the buffer: |
2755 | if 0 we haven't found it yet. | |
2756 | if < 0 we've found it and we've run the before-change-function. | |
2757 | if > 0 we've actually performed it and the value is its position. */ | |
29cdc13e | 2758 | EMACS_INT changed = 0; |
d5c2c403 KH |
2759 | unsigned char fromstr[MAX_MULTIBYTE_LENGTH], tostr[MAX_MULTIBYTE_LENGTH]; |
2760 | unsigned char *p; | |
aed13378 | 2761 | int count = SPECPDL_INDEX (); |
aa801467 KH |
2762 | #define COMBINING_NO 0 |
2763 | #define COMBINING_BEFORE 1 | |
2764 | #define COMBINING_AFTER 2 | |
2765 | #define COMBINING_BOTH (COMBINING_BEFORE | COMBINING_AFTER) | |
2766 | int maybe_byte_combining = COMBINING_NO; | |
29cdc13e | 2767 | EMACS_INT last_changed = 0; |
4b4deea2 | 2768 | int multibyte_p = !NILP (BVAR (current_buffer, enable_multibyte_characters)); |
13bdea59 | 2769 | int fromc, toc; |
35692fe0 | 2770 | |
0f2e2a3b SM |
2771 | restart: |
2772 | ||
35692fe0 | 2773 | validate_region (&start, &end); |
13bdea59 PE |
2774 | CHECK_CHARACTER (fromchar); |
2775 | CHECK_CHARACTER (tochar); | |
2776 | fromc = XFASTINT (fromchar); | |
2777 | toc = XFASTINT (tochar); | |
35692fe0 | 2778 | |
7439e5b9 | 2779 | if (multibyte_p) |
fb8106e8 | 2780 | { |
13bdea59 PE |
2781 | len = CHAR_STRING (fromc, fromstr); |
2782 | if (CHAR_STRING (toc, tostr) != len) | |
fdd6025e | 2783 | error ("Characters in `subst-char-in-region' have different byte-lengths"); |
aa801467 KH |
2784 | if (!ASCII_BYTE_P (*tostr)) |
2785 | { | |
2786 | /* If *TOSTR is in the range 0x80..0x9F and TOCHAR is not a | |
2787 | complete multibyte character, it may be combined with the | |
2788 | after bytes. If it is in the range 0xA0..0xFF, it may be | |
2789 | combined with the before and after bytes. */ | |
2790 | if (!CHAR_HEAD_P (*tostr)) | |
2791 | maybe_byte_combining = COMBINING_BOTH; | |
2792 | else if (BYTES_BY_CHAR_HEAD (*tostr) > len) | |
2793 | maybe_byte_combining = COMBINING_AFTER; | |
2794 | } | |
fb8106e8 KH |
2795 | } |
2796 | else | |
2797 | { | |
2798 | len = 1; | |
13bdea59 PE |
2799 | fromstr[0] = fromc; |
2800 | tostr[0] = toc; | |
fb8106e8 KH |
2801 | } |
2802 | ||
84246b95 KH |
2803 | pos = XINT (start); |
2804 | pos_byte = CHAR_TO_BYTE (pos); | |
ec1c14f6 RS |
2805 | stop = CHAR_TO_BYTE (XINT (end)); |
2806 | end_byte = stop; | |
35692fe0 | 2807 | |
d5a539cd RS |
2808 | /* If we don't want undo, turn off putting stuff on the list. |
2809 | That's faster than getting rid of things, | |
c8e76b47 RS |
2810 | and it prevents even the entry for a first change. |
2811 | Also inhibit locking the file. */ | |
0f2e2a3b | 2812 | if (!changed && !NILP (noundo)) |
d5a539cd RS |
2813 | { |
2814 | record_unwind_protect (subst_char_in_region_unwind, | |
4b4deea2 TT |
2815 | BVAR (current_buffer, undo_list)); |
2816 | BVAR (current_buffer, undo_list) = Qt; | |
c8e76b47 RS |
2817 | /* Don't do file-locking. */ |
2818 | record_unwind_protect (subst_char_in_region_unwind_1, | |
4b4deea2 TT |
2819 | BVAR (current_buffer, filename)); |
2820 | BVAR (current_buffer, filename) = Qnil; | |
d5a539cd RS |
2821 | } |
2822 | ||
84246b95 | 2823 | if (pos_byte < GPT_BYTE) |
ec1c14f6 | 2824 | stop = min (stop, GPT_BYTE); |
fb8106e8 | 2825 | while (1) |
35692fe0 | 2826 | { |
c8a66ab8 | 2827 | EMACS_INT pos_byte_next = pos_byte; |
a3360ff9 | 2828 | |
84246b95 | 2829 | if (pos_byte >= stop) |
fb8106e8 | 2830 | { |
84246b95 | 2831 | if (pos_byte >= end_byte) break; |
ec1c14f6 | 2832 | stop = end_byte; |
fb8106e8 | 2833 | } |
84246b95 | 2834 | p = BYTE_POS_ADDR (pos_byte); |
7439e5b9 GM |
2835 | if (multibyte_p) |
2836 | INC_POS (pos_byte_next); | |
2837 | else | |
2838 | ++pos_byte_next; | |
a3360ff9 KH |
2839 | if (pos_byte_next - pos_byte == len |
2840 | && p[0] == fromstr[0] | |
fb8106e8 KH |
2841 | && (len == 1 |
2842 | || (p[1] == fromstr[1] | |
2843 | && (len == 2 || (p[2] == fromstr[2] | |
2844 | && (len == 3 || p[3] == fromstr[3])))))) | |
35692fe0 | 2845 | { |
0f2e2a3b SM |
2846 | if (changed < 0) |
2847 | /* We've already seen this and run the before-change-function; | |
2848 | this time we only need to record the actual position. */ | |
2849 | changed = pos; | |
2850 | else if (!changed) | |
60b96ee7 | 2851 | { |
0f2e2a3b | 2852 | changed = -1; |
3e145152 | 2853 | modify_region (current_buffer, pos, XINT (end), 0); |
7653d030 RS |
2854 | |
2855 | if (! NILP (noundo)) | |
2856 | { | |
1e158d25 RS |
2857 | if (MODIFF - 1 == SAVE_MODIFF) |
2858 | SAVE_MODIFF++; | |
0b5397c2 SM |
2859 | if (MODIFF - 1 == BUF_AUTOSAVE_MODIFF (current_buffer)) |
2860 | BUF_AUTOSAVE_MODIFF (current_buffer)++; | |
7653d030 | 2861 | } |
0f2e2a3b SM |
2862 | |
2863 | /* The before-change-function may have moved the gap | |
2864 | or even modified the buffer so we should start over. */ | |
2865 | goto restart; | |
60b96ee7 RS |
2866 | } |
2867 | ||
0c1e3b85 | 2868 | /* Take care of the case where the new character |
34a7a267 | 2869 | combines with neighboring bytes. */ |
a3360ff9 | 2870 | if (maybe_byte_combining |
aa801467 KH |
2871 | && (maybe_byte_combining == COMBINING_AFTER |
2872 | ? (pos_byte_next < Z_BYTE | |
2873 | && ! CHAR_HEAD_P (FETCH_BYTE (pos_byte_next))) | |
2874 | : ((pos_byte_next < Z_BYTE | |
2875 | && ! CHAR_HEAD_P (FETCH_BYTE (pos_byte_next))) | |
2876 | || (pos_byte > BEG_BYTE | |
2877 | && ! ASCII_BYTE_P (FETCH_BYTE (pos_byte - 1)))))) | |
0c1e3b85 RS |
2878 | { |
2879 | Lisp_Object tem, string; | |
2880 | ||
2881 | struct gcpro gcpro1; | |
2882 | ||
4b4deea2 | 2883 | tem = BVAR (current_buffer, undo_list); |
0c1e3b85 RS |
2884 | GCPRO1 (tem); |
2885 | ||
aa801467 | 2886 | /* Make a multibyte string containing this single character. */ |
e7f8264d | 2887 | string = make_multibyte_string ((char *) tostr, 1, len); |
0c1e3b85 RS |
2888 | /* replace_range is less efficient, because it moves the gap, |
2889 | but it handles combining correctly. */ | |
2890 | replace_range (pos, pos + 1, string, | |
9869520f | 2891 | 0, 0, 1); |
a3360ff9 KH |
2892 | pos_byte_next = CHAR_TO_BYTE (pos); |
2893 | if (pos_byte_next > pos_byte) | |
2894 | /* Before combining happened. We should not increment | |
3f5409d3 KH |
2895 | POS. So, to cancel the later increment of POS, |
2896 | decrease it now. */ | |
2897 | pos--; | |
a3360ff9 | 2898 | else |
3f5409d3 | 2899 | INC_POS (pos_byte_next); |
34a7a267 | 2900 | |
0c1e3b85 | 2901 | if (! NILP (noundo)) |
4b4deea2 | 2902 | BVAR (current_buffer, undo_list) = tem; |
0c1e3b85 RS |
2903 | |
2904 | UNGCPRO; | |
2905 | } | |
2906 | else | |
2907 | { | |
2908 | if (NILP (noundo)) | |
2909 | record_change (pos, 1); | |
2910 | for (i = 0; i < len; i++) *p++ = tostr[i]; | |
2911 | } | |
d5c2c403 | 2912 | last_changed = pos + 1; |
35692fe0 | 2913 | } |
3f5409d3 KH |
2914 | pos_byte = pos_byte_next; |
2915 | pos++; | |
35692fe0 JB |
2916 | } |
2917 | ||
0f2e2a3b | 2918 | if (changed > 0) |
d5c2c403 KH |
2919 | { |
2920 | signal_after_change (changed, | |
2921 | last_changed - changed, last_changed - changed); | |
2922 | update_compositions (changed, last_changed, CHECK_ALL); | |
2923 | } | |
60b96ee7 | 2924 | |
d5a539cd | 2925 | unbind_to (count, Qnil); |
35692fe0 JB |
2926 | return Qnil; |
2927 | } | |
2928 | ||
f555f8cf | 2929 | |
c8a66ab8 EZ |
2930 | static Lisp_Object check_translation (EMACS_INT, EMACS_INT, EMACS_INT, |
2931 | Lisp_Object); | |
f555f8cf KH |
2932 | |
2933 | /* Helper function for Ftranslate_region_internal. | |
2934 | ||
2935 | Check if a character sequence at POS (POS_BYTE) matches an element | |
2936 | of VAL. VAL is a list (([FROM-CHAR ...] . TO) ...). If a matching | |
2937 | element is found, return it. Otherwise return Qnil. */ | |
2938 | ||
2939 | static Lisp_Object | |
c8a66ab8 EZ |
2940 | check_translation (EMACS_INT pos, EMACS_INT pos_byte, EMACS_INT end, |
2941 | Lisp_Object val) | |
f555f8cf KH |
2942 | { |
2943 | int buf_size = 16, buf_used = 0; | |
2944 | int *buf = alloca (sizeof (int) * buf_size); | |
2945 | ||
2946 | for (; CONSP (val); val = XCDR (val)) | |
2947 | { | |
2948 | Lisp_Object elt; | |
c8a66ab8 | 2949 | EMACS_INT len, i; |
f555f8cf KH |
2950 | |
2951 | elt = XCAR (val); | |
2952 | if (! CONSP (elt)) | |
2953 | continue; | |
2954 | elt = XCAR (elt); | |
2955 | if (! VECTORP (elt)) | |
2956 | continue; | |
2957 | len = ASIZE (elt); | |
2958 | if (len <= end - pos) | |
2959 | { | |
2960 | for (i = 0; i < len; i++) | |
2961 | { | |
2962 | if (buf_used <= i) | |
2963 | { | |
2964 | unsigned char *p = BYTE_POS_ADDR (pos_byte); | |
c8a66ab8 | 2965 | int len1; |
f555f8cf KH |
2966 | |
2967 | if (buf_used == buf_size) | |
2968 | { | |
2969 | int *newbuf; | |
2970 | ||
2971 | buf_size += 16; | |
2972 | newbuf = alloca (sizeof (int) * buf_size); | |
2973 | memcpy (newbuf, buf, sizeof (int) * buf_used); | |
2974 | buf = newbuf; | |
2975 | } | |
c8a66ab8 EZ |
2976 | buf[buf_used++] = STRING_CHAR_AND_LENGTH (p, len1); |
2977 | pos_byte += len1; | |
f555f8cf KH |
2978 | } |
2979 | if (XINT (AREF (elt, i)) != buf[i]) | |
2980 | break; | |
2981 | } | |
2982 | if (i == len) | |
2983 | return XCAR (val); | |
2984 | } | |
2985 | } | |
2986 | return Qnil; | |
2987 | } | |
2988 | ||
2989 | ||
8583605b KH |
2990 | DEFUN ("translate-region-internal", Ftranslate_region_internal, |
2991 | Stranslate_region_internal, 3, 3, 0, | |
2992 | doc: /* Internal use only. | |
2993 | From START to END, translate characters according to TABLE. | |
f555f8cf KH |
2994 | TABLE is a string or a char-table; the Nth character in it is the |
2995 | mapping for the character with code N. | |
7ee72033 | 2996 | It returns the number of characters changed. */) |
5842a27b | 2997 | (Lisp_Object start, Lisp_Object end, register Lisp_Object table) |
35692fe0 | 2998 | { |
35692fe0 | 2999 | register unsigned char *tt; /* Trans table. */ |
35692fe0 JB |
3000 | register int nc; /* New character. */ |
3001 | int cnt; /* Number of changes made. */ | |
faf8b5bc | 3002 | EMACS_INT size; /* Size of translate table. */ |
c8a66ab8 | 3003 | EMACS_INT pos, pos_byte, end_pos; |
4b4deea2 | 3004 | int multibyte = !NILP (BVAR (current_buffer, enable_multibyte_characters)); |
9710023e | 3005 | int string_multibyte IF_LINT (= 0); |
35692fe0 JB |
3006 | |
3007 | validate_region (&start, &end); | |
8583605b | 3008 | if (CHAR_TABLE_P (table)) |
f555f8cf KH |
3009 | { |
3010 | if (! EQ (XCHAR_TABLE (table)->purpose, Qtranslation_table)) | |
3011 | error ("Not a translation table"); | |
eb3d9ec7 | 3012 | size = MAX_CHAR; |
f555f8cf KH |
3013 | tt = NULL; |
3014 | } | |
8583605b KH |
3015 | else |
3016 | { | |
3017 | CHECK_STRING (table); | |
3018 | ||
eb3d9ec7 KH |
3019 | if (! multibyte && (SCHARS (table) < SBYTES (table))) |
3020 | table = string_make_unibyte (table); | |
8583605b KH |
3021 | string_multibyte = SCHARS (table) < SBYTES (table); |
3022 | size = SBYTES (table); | |
3023 | tt = SDATA (table); | |
3024 | } | |
35692fe0 | 3025 | |
1f24f4fd | 3026 | pos = XINT (start); |
8583605b | 3027 | pos_byte = CHAR_TO_BYTE (pos); |
e65837df | 3028 | end_pos = XINT (end); |
af6ea8ad | 3029 | modify_region (current_buffer, pos, end_pos, 0); |
35692fe0 JB |
3030 | |
3031 | cnt = 0; | |
f555f8cf | 3032 | for (; pos < end_pos; ) |
35692fe0 | 3033 | { |
ec1c14f6 | 3034 | register unsigned char *p = BYTE_POS_ADDR (pos_byte); |
8583605b KH |
3035 | unsigned char *str, buf[MAX_MULTIBYTE_LENGTH]; |
3036 | int len, str_len; | |
1f24f4fd | 3037 | int oc; |
f555f8cf | 3038 | Lisp_Object val; |
ec1c14f6 | 3039 | |
e8cce5af | 3040 | if (multibyte) |
62a6e103 | 3041 | oc = STRING_CHAR_AND_LENGTH (p, len); |
e8cce5af | 3042 | else |
eb3d9ec7 KH |
3043 | oc = *p, len = 1; |
3044 | if (oc < size) | |
35692fe0 | 3045 | { |
eb3d9ec7 | 3046 | if (tt) |
35692fe0 | 3047 | { |
fa056b08 KS |
3048 | /* Reload as signal_after_change in last iteration may GC. */ |
3049 | tt = SDATA (table); | |
8583605b | 3050 | if (string_multibyte) |
0c1e3b85 | 3051 | { |
8583605b | 3052 | str = tt + string_char_to_byte (table, oc); |
62a6e103 | 3053 | nc = STRING_CHAR_AND_LENGTH (str, str_len); |
0c1e3b85 RS |
3054 | } |
3055 | else | |
3056 | { | |
eb3d9ec7 KH |
3057 | nc = tt[oc]; |
3058 | if (! ASCII_BYTE_P (nc) && multibyte) | |
3059 | { | |
3060 | str_len = BYTE8_STRING (nc, buf); | |
3061 | str = buf; | |
3062 | } | |
3063 | else | |
3064 | { | |
3065 | str_len = 1; | |
3066 | str = tt + oc; | |
3067 | } | |
0c1e3b85 | 3068 | } |
35692fe0 | 3069 | } |
eb3d9ec7 | 3070 | else |
f555f8cf | 3071 | { |
eb3d9ec7 KH |
3072 | nc = oc; |
3073 | val = CHAR_TABLE_REF (table, oc); | |
045eb8d9 | 3074 | if (CHARACTERP (val)) |
eb3d9ec7 | 3075 | { |
045eb8d9 | 3076 | nc = XFASTINT (val); |
eb3d9ec7 KH |
3077 | str_len = CHAR_STRING (nc, buf); |
3078 | str = buf; | |
3079 | } | |
3080 | else if (VECTORP (val) || (CONSP (val))) | |
3081 | { | |
3082 | /* VAL is [TO_CHAR ...] or (([FROM-CHAR ...] . TO) ...) | |
3083 | where TO is TO-CHAR or [TO-CHAR ...]. */ | |
3084 | nc = -1; | |
3085 | } | |
f555f8cf | 3086 | } |
8583605b | 3087 | |
eb3d9ec7 | 3088 | if (nc != oc && nc >= 0) |
8583605b | 3089 | { |
f555f8cf KH |
3090 | /* Simple one char to one char translation. */ |
3091 | if (len != str_len) | |
3092 | { | |
3093 | Lisp_Object string; | |
8583605b | 3094 | |
f555f8cf KH |
3095 | /* This is less efficient, because it moves the gap, |
3096 | but it should handle multibyte characters correctly. */ | |
e7f8264d | 3097 | string = make_multibyte_string ((char *) str, 1, str_len); |
f555f8cf KH |
3098 | replace_range (pos, pos + 1, string, 1, 0, 1); |
3099 | len = str_len; | |
3100 | } | |
3101 | else | |
3102 | { | |
3103 | record_change (pos, 1); | |
3104 | while (str_len-- > 0) | |
3105 | *p++ = *str++; | |
3106 | signal_after_change (pos, 1, 1); | |
3107 | update_compositions (pos, pos + 1, CHECK_BORDER); | |
3108 | } | |
3109 | ++cnt; | |
8583605b | 3110 | } |
eb3d9ec7 | 3111 | else if (nc < 0) |
8583605b | 3112 | { |
f555f8cf KH |
3113 | Lisp_Object string; |
3114 | ||
3115 | if (CONSP (val)) | |
3116 | { | |
3117 | val = check_translation (pos, pos_byte, end_pos, val); | |
3118 | if (NILP (val)) | |
3119 | { | |
3120 | pos_byte += len; | |
3121 | pos++; | |
3122 | continue; | |
3123 | } | |
3124 | /* VAL is ([FROM-CHAR ...] . TO). */ | |
3125 | len = ASIZE (XCAR (val)); | |
3126 | val = XCDR (val); | |
3127 | } | |
3128 | else | |
3129 | len = 1; | |
3130 | ||
3131 | if (VECTORP (val)) | |
3132 | { | |
bde25748 | 3133 | string = Fconcat (1, &val); |
f555f8cf KH |
3134 | } |
3135 | else | |
3136 | { | |
3137 | string = Fmake_string (make_number (1), val); | |
3138 | } | |
3139 | replace_range (pos, pos + len, string, 1, 0, 1); | |
3140 | pos_byte += SBYTES (string); | |
3141 | pos += SCHARS (string); | |
3142 | cnt += SCHARS (string); | |
3143 | end_pos += SCHARS (string) - len; | |
3144 | continue; | |
8583605b | 3145 | } |
8583605b KH |
3146 | } |
3147 | pos_byte += len; | |
3f5409d3 | 3148 | pos++; |
35692fe0 JB |
3149 | } |
3150 | ||
ec1c14f6 | 3151 | return make_number (cnt); |
35692fe0 JB |
3152 | } |
3153 | ||
a7ca3326 | 3154 | DEFUN ("delete-region", Fdelete_region, Sdelete_region, 2, 2, "r", |
3bbd2265 | 3155 | doc: /* Delete the text between START and END. |
f0fcdf4b LMI |
3156 | If called interactively, delete the region between point and mark. |
3157 | This command deletes buffer text without modifying the kill ring. */) | |
5842a27b | 3158 | (Lisp_Object start, Lisp_Object end) |
35692fe0 | 3159 | { |
2591ec64 EN |
3160 | validate_region (&start, &end); |
3161 | del_range (XINT (start), XINT (end)); | |
35692fe0 JB |
3162 | return Qnil; |
3163 | } | |
7dae4502 SM |
3164 | |
3165 | DEFUN ("delete-and-extract-region", Fdelete_and_extract_region, | |
3166 | Sdelete_and_extract_region, 2, 2, 0, | |
7ee72033 | 3167 | doc: /* Delete the text between START and END and return it. */) |
5842a27b | 3168 | (Lisp_Object start, Lisp_Object end) |
7dae4502 SM |
3169 | { |
3170 | validate_region (&start, &end); | |
8550b998 | 3171 | if (XINT (start) == XINT (end)) |
977f6cfb | 3172 | return empty_unibyte_string; |
7dae4502 SM |
3173 | return del_range_1 (XINT (start), XINT (end), 1, 1); |
3174 | } | |
35692fe0 | 3175 | \f |
a7ca3326 | 3176 | DEFUN ("widen", Fwiden, Swiden, 0, 0, "", |
7ee72033 MB |
3177 | doc: /* Remove restrictions (narrowing) from current buffer. |
3178 | This allows the buffer's full text to be seen and edited. */) | |
5842a27b | 3179 | (void) |
35692fe0 | 3180 | { |
2cad2e34 RS |
3181 | if (BEG != BEGV || Z != ZV) |
3182 | current_buffer->clip_changed = 1; | |
35692fe0 | 3183 | BEGV = BEG; |
ec1c14f6 RS |
3184 | BEGV_BYTE = BEG_BYTE; |
3185 | SET_BUF_ZV_BOTH (current_buffer, Z, Z_BYTE); | |
52b14ac0 JB |
3186 | /* Changing the buffer bounds invalidates any recorded current column. */ |
3187 | invalidate_current_column (); | |
35692fe0 JB |
3188 | return Qnil; |
3189 | } | |
3190 | ||
a7ca3326 | 3191 | DEFUN ("narrow-to-region", Fnarrow_to_region, Snarrow_to_region, 2, 2, "r", |
7ee72033 | 3192 | doc: /* Restrict editing in this buffer to the current region. |
a1f17501 PJ |
3193 | The rest of the text becomes temporarily invisible and untouchable |
3194 | but is not deleted; if you save the buffer in a file, the invisible | |
3195 | text is included in the file. \\[widen] makes all visible again. | |
3196 | See also `save-restriction'. | |
3197 | ||
3198 | When calling from a program, pass two arguments; positions (integers | |
7ee72033 | 3199 | or markers) bounding the text that should remain visible. */) |
5842a27b | 3200 | (register Lisp_Object start, Lisp_Object end) |
35692fe0 | 3201 | { |
b7826503 PJ |
3202 | CHECK_NUMBER_COERCE_MARKER (start); |
3203 | CHECK_NUMBER_COERCE_MARKER (end); | |
35692fe0 | 3204 | |
2591ec64 | 3205 | if (XINT (start) > XINT (end)) |
35692fe0 | 3206 | { |
b5a6948e | 3207 | Lisp_Object tem; |
2591ec64 | 3208 | tem = start; start = end; end = tem; |
35692fe0 JB |
3209 | } |
3210 | ||
2591ec64 EN |
3211 | if (!(BEG <= XINT (start) && XINT (start) <= XINT (end) && XINT (end) <= Z)) |
3212 | args_out_of_range (start, end); | |
35692fe0 | 3213 | |
2cad2e34 RS |
3214 | if (BEGV != XFASTINT (start) || ZV != XFASTINT (end)) |
3215 | current_buffer->clip_changed = 1; | |
3216 | ||
ec1c14f6 | 3217 | SET_BUF_BEGV (current_buffer, XFASTINT (start)); |
2591ec64 | 3218 | SET_BUF_ZV (current_buffer, XFASTINT (end)); |
6ec8bbd2 | 3219 | if (PT < XFASTINT (start)) |
2591ec64 | 3220 | SET_PT (XFASTINT (start)); |
6ec8bbd2 | 3221 | if (PT > XFASTINT (end)) |
2591ec64 | 3222 | SET_PT (XFASTINT (end)); |
52b14ac0 JB |
3223 | /* Changing the buffer bounds invalidates any recorded current column. */ |
3224 | invalidate_current_column (); | |
35692fe0 JB |
3225 | return Qnil; |
3226 | } | |
3227 | ||
3228 | Lisp_Object | |
971de7fb | 3229 | save_restriction_save (void) |
35692fe0 | 3230 | { |
d6abb4c7 MB |
3231 | if (BEGV == BEG && ZV == Z) |
3232 | /* The common case that the buffer isn't narrowed. | |
3233 | We return just the buffer object, which save_restriction_restore | |
3234 | recognizes as meaning `no restriction'. */ | |
3235 | return Fcurrent_buffer (); | |
3236 | else | |
3237 | /* We have to save a restriction, so return a pair of markers, one | |
3238 | for the beginning and one for the end. */ | |
3239 | { | |
3240 | Lisp_Object beg, end; | |
3241 | ||
3242 | beg = buildmark (BEGV, BEGV_BYTE); | |
3243 | end = buildmark (ZV, ZV_BYTE); | |
35692fe0 | 3244 | |
d6abb4c7 | 3245 | /* END must move forward if text is inserted at its exact location. */ |
5e617bc2 | 3246 | XMARKER (end)->insertion_type = 1; |
d6abb4c7 MB |
3247 | |
3248 | return Fcons (beg, end); | |
3249 | } | |
35692fe0 JB |
3250 | } |
3251 | ||
3252 | Lisp_Object | |
971de7fb | 3253 | save_restriction_restore (Lisp_Object data) |
35692fe0 | 3254 | { |
d528b1ce SM |
3255 | struct buffer *cur = NULL; |
3256 | struct buffer *buf = (CONSP (data) | |
3257 | ? XMARKER (XCAR (data))->buffer | |
3258 | : XBUFFER (data)); | |
3259 | ||
4b4deea2 | 3260 | if (buf && buf != current_buffer && !NILP (BVAR (buf, pt_marker))) |
d528b1ce SM |
3261 | { /* If `buf' uses markers to keep track of PT, BEGV, and ZV (as |
3262 | is the case if it is or has an indirect buffer), then make | |
3263 | sure it is current before we update BEGV, so | |
3264 | set_buffer_internal takes care of managing those markers. */ | |
3265 | cur = current_buffer; | |
3266 | set_buffer_internal (buf); | |
3267 | } | |
3268 | ||
d6abb4c7 MB |
3269 | if (CONSP (data)) |
3270 | /* A pair of marks bounding a saved restriction. */ | |
35692fe0 | 3271 | { |
d6abb4c7 MB |
3272 | struct Lisp_Marker *beg = XMARKER (XCAR (data)); |
3273 | struct Lisp_Marker *end = XMARKER (XCDR (data)); | |
d528b1ce | 3274 | eassert (buf == end->buffer); |
2cad2e34 | 3275 | |
63884563 RS |
3276 | if (buf /* Verify marker still points to a buffer. */ |
3277 | && (beg->charpos != BUF_BEGV (buf) || end->charpos != BUF_ZV (buf))) | |
d6abb4c7 MB |
3278 | /* The restriction has changed from the saved one, so restore |
3279 | the saved restriction. */ | |
3280 | { | |
faf8b5bc | 3281 | EMACS_INT pt = BUF_PT (buf); |
d6abb4c7 MB |
3282 | |
3283 | SET_BUF_BEGV_BOTH (buf, beg->charpos, beg->bytepos); | |
3284 | SET_BUF_ZV_BOTH (buf, end->charpos, end->bytepos); | |
3285 | ||
3286 | if (pt < beg->charpos || pt > end->charpos) | |
3287 | /* The point is outside the new visible range, move it inside. */ | |
3288 | SET_BUF_PT_BOTH (buf, | |
3289 | clip_to_bounds (beg->charpos, pt, end->charpos), | |
63884563 | 3290 | clip_to_bounds (beg->bytepos, BUF_PT_BYTE (buf), |
d6abb4c7 | 3291 | end->bytepos)); |
177c0ea7 | 3292 | |
d6abb4c7 MB |
3293 | buf->clip_changed = 1; /* Remember that the narrowing changed. */ |
3294 | } | |
3295 | } | |
3296 | else | |
3297 | /* A buffer, which means that there was no old restriction. */ | |
3298 | { | |
63884563 RS |
3299 | if (buf /* Verify marker still points to a buffer. */ |
3300 | && (BUF_BEGV (buf) != BUF_BEG (buf) || BUF_ZV (buf) != BUF_Z (buf))) | |
d6abb4c7 MB |
3301 | /* The buffer has been narrowed, get rid of the narrowing. */ |
3302 | { | |
63884563 RS |
3303 | SET_BUF_BEGV_BOTH (buf, BUF_BEG (buf), BUF_BEG_BYTE (buf)); |
3304 | SET_BUF_ZV_BOTH (buf, BUF_Z (buf), BUF_Z_BYTE (buf)); | |
35692fe0 | 3305 | |
d6abb4c7 MB |
3306 | buf->clip_changed = 1; /* Remember that the narrowing changed. */ |
3307 | } | |
3308 | } | |
35692fe0 | 3309 | |
aca092ac SM |
3310 | /* Changing the buffer bounds invalidates any recorded current column. */ |
3311 | invalidate_current_column (); | |
3312 | ||
d528b1ce SM |
3313 | if (cur) |
3314 | set_buffer_internal (cur); | |
3315 | ||
35692fe0 JB |
3316 | return Qnil; |
3317 | } | |
3318 | ||
3319 | DEFUN ("save-restriction", Fsave_restriction, Ssave_restriction, 0, UNEVALLED, 0, | |
7ee72033 | 3320 | doc: /* Execute BODY, saving and restoring current buffer's restrictions. |
a1f17501 | 3321 | The buffer's restrictions make parts of the beginning and end invisible. |
9671c13a | 3322 | \(They are set up with `narrow-to-region' and eliminated with `widen'.) |
a1f17501 PJ |
3323 | This special form, `save-restriction', saves the current buffer's restrictions |
3324 | when it is entered, and restores them when it is exited. | |
3325 | So any `narrow-to-region' within BODY lasts only until the end of the form. | |
3326 | The old restrictions settings are restored | |
3327 | even in case of abnormal exit (throw or error). | |
3328 | ||
3329 | The value returned is the value of the last form in BODY. | |
3330 | ||
3331 | Note: if you are using both `save-excursion' and `save-restriction', | |
3332 | use `save-excursion' outermost: | |
33c2d29f MB |
3333 | (save-excursion (save-restriction ...)) |
3334 | ||
3335 | usage: (save-restriction &rest BODY) */) | |
5842a27b | 3336 | (Lisp_Object body) |
35692fe0 JB |
3337 | { |
3338 | register Lisp_Object val; | |
aed13378 | 3339 | int count = SPECPDL_INDEX (); |
35692fe0 JB |
3340 | |
3341 | record_unwind_protect (save_restriction_restore, save_restriction_save ()); | |
3342 | val = Fprogn (body); | |
3343 | return unbind_to (count, val); | |
3344 | } | |
3345 | \f | |
0ae83348 | 3346 | /* Buffer for the most recent text displayed by Fmessage_box. */ |
671fbc4d KH |
3347 | static char *message_text; |
3348 | ||
3349 | /* Allocated length of that buffer. */ | |
c9f8d652 | 3350 | static ptrdiff_t message_length; |
671fbc4d | 3351 | |
a7ca3326 | 3352 | DEFUN ("message", Fmessage, Smessage, 1, MANY, 0, |
db18da59 | 3353 | doc: /* Display a message at the bottom of the screen. |
281c1721 RS |
3354 | The message also goes into the `*Messages*' buffer. |
3355 | \(In keyboard macros, that's all it does.) | |
db18da59 | 3356 | Return the message. |
281c1721 | 3357 | |
a1f17501 PJ |
3358 | The first argument is a format control string, and the rest are data |
3359 | to be formatted under control of the string. See `format' for details. | |
3360 | ||
7bd5bcfb KS |
3361 | Note: Use (message "%s" VALUE) to print the value of expressions and |
3362 | variables to avoid accidentally interpreting `%' as format specifiers. | |
3363 | ||
fa056b08 KS |
3364 | If the first argument is nil or the empty string, the function clears |
3365 | any existing message; this lets the minibuffer contents show. See | |
3366 | also `current-message'. | |
4bfbe194 | 3367 | |
867b9600 | 3368 | usage: (message FORMAT-STRING &rest ARGS) */) |
f66c7cf8 | 3369 | (ptrdiff_t nargs, Lisp_Object *args) |
35692fe0 | 3370 | { |
6076e561 RS |
3371 | if (NILP (args[0]) |
3372 | || (STRINGP (args[0]) | |
3373 | && SBYTES (args[0]) == 0)) | |
f0250249 JB |
3374 | { |
3375 | message (0); | |
674a954a | 3376 | return args[0]; |
f0250249 | 3377 | } |
ccdac5be JB |
3378 | else |
3379 | { | |
3380 | register Lisp_Object val; | |
304f1f12 | 3381 | val = Fformat (nargs, args); |
d5db4077 | 3382 | message3 (val, SBYTES (val), STRING_MULTIBYTE (val)); |
ccdac5be JB |
3383 | return val; |
3384 | } | |
35692fe0 JB |
3385 | } |
3386 | ||
cacc3e2c | 3387 | DEFUN ("message-box", Fmessage_box, Smessage_box, 1, MANY, 0, |
7ee72033 | 3388 | doc: /* Display a message, in a dialog box if possible. |
a1f17501 PJ |
3389 | If a dialog box is not available, use the echo area. |
3390 | The first argument is a format control string, and the rest are data | |
3391 | to be formatted under control of the string. See `format' for details. | |
3392 | ||
fa056b08 KS |
3393 | If the first argument is nil or the empty string, clear any existing |
3394 | message; let the minibuffer contents show. | |
4bfbe194 | 3395 | |
867b9600 | 3396 | usage: (message-box FORMAT-STRING &rest ARGS) */) |
f66c7cf8 | 3397 | (ptrdiff_t nargs, Lisp_Object *args) |
cacc3e2c RS |
3398 | { |
3399 | if (NILP (args[0])) | |
3400 | { | |
3401 | message (0); | |
3402 | return Qnil; | |
3403 | } | |
3404 | else | |
3405 | { | |
3406 | register Lisp_Object val; | |
3407 | val = Fformat (nargs, args); | |
f8250f01 | 3408 | #ifdef HAVE_MENUS |
0ae83348 EZ |
3409 | /* The MS-DOS frames support popup menus even though they are |
3410 | not FRAME_WINDOW_P. */ | |
3411 | if (FRAME_WINDOW_P (XFRAME (selected_frame)) | |
3412 | || FRAME_MSDOS_P (XFRAME (selected_frame))) | |
cacc3e2c | 3413 | { |
f838ed7b | 3414 | Lisp_Object pane, menu; |
cacc3e2c RS |
3415 | struct gcpro gcpro1; |
3416 | pane = Fcons (Fcons (build_string ("OK"), Qt), Qnil); | |
3417 | GCPRO1 (pane); | |
3418 | menu = Fcons (val, pane); | |
f838ed7b | 3419 | Fx_popup_dialog (Qt, menu, Qt); |
cacc3e2c RS |
3420 | UNGCPRO; |
3421 | return val; | |
3422 | } | |
0ae83348 | 3423 | #endif /* HAVE_MENUS */ |
cacc3e2c RS |
3424 | /* Copy the data so that it won't move when we GC. */ |
3425 | if (! message_text) | |
3426 | { | |
3427 | message_text = (char *)xmalloc (80); | |
3428 | message_length = 80; | |
3429 | } | |
d5db4077 | 3430 | if (SBYTES (val) > message_length) |
cacc3e2c | 3431 | { |
c9f8d652 | 3432 | message_text = (char *) xrealloc (message_text, SBYTES (val)); |
d5db4077 | 3433 | message_length = SBYTES (val); |
cacc3e2c | 3434 | } |
72af86bd | 3435 | memcpy (message_text, SDATA (val), SBYTES (val)); |
d5db4077 | 3436 | message2 (message_text, SBYTES (val), |
d13a8480 | 3437 | STRING_MULTIBYTE (val)); |
cacc3e2c | 3438 | return val; |
cacc3e2c RS |
3439 | } |
3440 | } | |
f8250f01 | 3441 | |
cacc3e2c | 3442 | DEFUN ("message-or-box", Fmessage_or_box, Smessage_or_box, 1, MANY, 0, |
7ee72033 | 3443 | doc: /* Display a message in a dialog box or in the echo area. |
a1f17501 PJ |
3444 | If this command was invoked with the mouse, use a dialog box if |
3445 | `use-dialog-box' is non-nil. | |
3446 | Otherwise, use the echo area. | |
3447 | The first argument is a format control string, and the rest are data | |
3448 | to be formatted under control of the string. See `format' for details. | |
3449 | ||
fa056b08 KS |
3450 | If the first argument is nil or the empty string, clear any existing |
3451 | message; let the minibuffer contents show. | |
4bfbe194 | 3452 | |
867b9600 | 3453 | usage: (message-or-box FORMAT-STRING &rest ARGS) */) |
f66c7cf8 | 3454 | (ptrdiff_t nargs, Lisp_Object *args) |
cacc3e2c | 3455 | { |
f8250f01 | 3456 | #ifdef HAVE_MENUS |
5920df33 | 3457 | if ((NILP (last_nonmenu_event) || CONSP (last_nonmenu_event)) |
c01fbf95 | 3458 | && use_dialog_box) |
0a56ee6b | 3459 | return Fmessage_box (nargs, args); |
cacc3e2c RS |
3460 | #endif |
3461 | return Fmessage (nargs, args); | |
3462 | } | |
3463 | ||
a7ca3326 | 3464 | DEFUN ("current-message", Fcurrent_message, Scurrent_message, 0, 0, 0, |
7ee72033 | 3465 | doc: /* Return the string currently displayed in the echo area, or nil if none. */) |
5842a27b | 3466 | (void) |
b14dda8a | 3467 | { |
0634a78e | 3468 | return current_message (); |
b14dda8a RS |
3469 | } |
3470 | ||
2d9811c4 | 3471 | |
d2936d21 | 3472 | DEFUN ("propertize", Fpropertize, Spropertize, 1, MANY, 0, |
7ee72033 | 3473 | doc: /* Return a copy of STRING with text properties added. |
a1f17501 PJ |
3474 | First argument is the string to copy. |
3475 | Remaining arguments form a sequence of PROPERTY VALUE pairs for text | |
4bfbe194 MB |
3476 | properties to add to the result. |
3477 | usage: (propertize STRING &rest PROPERTIES) */) | |
f66c7cf8 | 3478 | (ptrdiff_t nargs, Lisp_Object *args) |
2d9811c4 GM |
3479 | { |
3480 | Lisp_Object properties, string; | |
3481 | struct gcpro gcpro1, gcpro2; | |
f66c7cf8 | 3482 | ptrdiff_t i; |
2d9811c4 GM |
3483 | |
3484 | /* Number of args must be odd. */ | |
c5101a77 | 3485 | if ((nargs & 1) == 0) |
2d9811c4 GM |
3486 | error ("Wrong number of arguments"); |
3487 | ||
3488 | properties = string = Qnil; | |
3489 | GCPRO2 (properties, string); | |
34a7a267 | 3490 | |
2d9811c4 | 3491 | /* First argument must be a string. */ |
b7826503 | 3492 | CHECK_STRING (args[0]); |
2d9811c4 GM |
3493 | string = Fcopy_sequence (args[0]); |
3494 | ||
3495 | for (i = 1; i < nargs; i += 2) | |
9b7a2369 | 3496 | properties = Fcons (args[i], Fcons (args[i + 1], properties)); |
2d9811c4 GM |
3497 | |
3498 | Fadd_text_properties (make_number (0), | |
d5db4077 | 3499 | make_number (SCHARS (string)), |
2d9811c4 GM |
3500 | properties, string); |
3501 | RETURN_UNGCPRO (string); | |
3502 | } | |
3503 | ||
a7ca3326 | 3504 | DEFUN ("format", Fformat, Sformat, 1, MANY, 0, |
867b9600 JL |
3505 | doc: /* Format a string out of a format-string and arguments. |
3506 | The first argument is a format control string. | |
a1f17501 | 3507 | The other arguments are substituted into it to make the result, a string. |
575b782f CY |
3508 | |
3509 | The format control string may contain %-sequences meaning to substitute | |
3510 | the next available argument: | |
3511 | ||
a1f17501 PJ |
3512 | %s means print a string argument. Actually, prints any object, with `princ'. |
3513 | %d means print as number in decimal (%o octal, %x hex). | |
3514 | %X is like %x, but uses upper case. | |
3515 | %e means print a number in exponential notation. | |
3516 | %f means print a number in decimal-point notation. | |
3517 | %g means print a number in exponential notation | |
3518 | or decimal-point notation, whichever uses fewer characters. | |
3519 | %c means print a number as a single character. | |
3520 | %S means print any object as an s-expression (using `prin1'). | |
575b782f CY |
3521 | |
3522 | The argument used for %d, %o, %x, %e, %f, %g or %c must be a number. | |
4bfbe194 MB |
3523 | Use %% to put a single % into the output. |
3524 | ||
575b782f CY |
3525 | A %-sequence may contain optional flag, width, and precision |
3526 | specifiers, as follows: | |
3527 | ||
3528 | %<flags><width><precision>character | |
3529 | ||
3530 | where flags is [+ #-0]+, width is [0-9]+, and precision is .[0-9]+ | |
3531 | ||
3532 | The + flag character inserts a + before any positive number, while a | |
3533 | space inserts a space before any positive number; these flags only | |
3534 | affect %d, %e, %f, and %g sequences, and the + flag takes precedence. | |
3535 | The # flag means to use an alternate display form for %o, %x, %X, %e, | |
3536 | %f, and %g sequences. The - and 0 flags affect the width specifier, | |
3537 | as described below. | |
3538 | ||
3539 | The width specifier supplies a lower limit for the length of the | |
3540 | printed representation. The padding, if any, normally goes on the | |
3541 | left, but it goes on the right if the - flag is present. The padding | |
3542 | character is normally a space, but it is 0 if the 0 flag is present. | |
a9ab721e LMI |
3543 | The 0 flag is ignored if the - flag is present, or the format sequence |
3544 | is something other than %d, %e, %f, and %g. | |
575b782f CY |
3545 | |
3546 | For %e, %f, and %g sequences, the number after the "." in the | |
3547 | precision specifier says how many decimal places to show; if zero, the | |
3548 | decimal point itself is omitted. For %s and %S, the precision | |
3549 | specifier truncates the string to the given width. | |
f555f8cf | 3550 | |
4bfbe194 | 3551 | usage: (format STRING &rest OBJECTS) */) |
f66c7cf8 | 3552 | (ptrdiff_t nargs, Lisp_Object *args) |
35692fe0 | 3553 | { |
f66c7cf8 | 3554 | ptrdiff_t n; /* The number of the next arg to substitute */ |
37910ab2 PE |
3555 | char initial_buffer[4000]; |
3556 | char *buf = initial_buffer; | |
3557 | EMACS_INT bufsize = sizeof initial_buffer; | |
c9d624c6 | 3558 | EMACS_INT max_bufsize = STRING_BYTES_BOUND + 1; |
37910ab2 PE |
3559 | char *p; |
3560 | Lisp_Object buf_save_value IF_LINT (= {0}); | |
e7f8264d | 3561 | register char *format, *end, *format_start; |
37910ab2 PE |
3562 | EMACS_INT formatlen, nchars; |
3563 | /* Nonzero if the format is multibyte. */ | |
3564 | int multibyte_format = 0; | |
1f24f4fd RS |
3565 | /* Nonzero if the output should be a multibyte string, |
3566 | which is true if any of the inputs is one. */ | |
3567 | int multibyte = 0; | |
8f2917e4 KH |
3568 | /* When we make a multibyte string, we must pay attention to the |
3569 | byte combining problem, i.e., a byte may be combined with a | |
3b59c351 | 3570 | multibyte character of the previous string. This flag tells if we |
8f2917e4 KH |
3571 | must consider such a situation or not. */ |
3572 | int maybe_combine_byte; | |
8d6179dc | 3573 | Lisp_Object val; |
d147ee84 | 3574 | int arg_intervals = 0; |
7e2c051b | 3575 | USE_SAFE_ALLOCA; |
d147ee84 RS |
3576 | |
3577 | /* discarded[I] is 1 if byte I of the format | |
3578 | string was not copied into the output. | |
3579 | It is 2 if byte I was not the first byte of its character. */ | |
37910ab2 | 3580 | char *discarded; |
d147ee84 RS |
3581 | |
3582 | /* Each element records, for one argument, | |
3583 | the start and end bytepos in the output string, | |
37910ab2 | 3584 | whether the argument has been converted to string (e.g., due to "%S"), |
d147ee84 RS |
3585 | and whether the argument is a string with intervals. |
3586 | info[0] is unused. Unused elements have -1 for start. */ | |
5e6d5493 GM |
3587 | struct info |
3588 | { | |
37910ab2 PE |
3589 | EMACS_INT start, end; |
3590 | int converted_to_string; | |
3591 | int intervals; | |
5e6d5493 | 3592 | } *info = 0; |
1f24f4fd | 3593 | |
35692fe0 JB |
3594 | /* It should not be necessary to GCPRO ARGS, because |
3595 | the caller in the interpreter should take care of that. */ | |
3596 | ||
37910ab2 PE |
3597 | CHECK_STRING (args[0]); |
3598 | format_start = SSDATA (args[0]); | |
3599 | formatlen = SBYTES (args[0]); | |
3600 | ||
3601 | /* Allocate the info and discarded tables. */ | |
3602 | { | |
f66c7cf8 | 3603 | ptrdiff_t i; |
37910ab2 | 3604 | if ((SIZE_MAX - formatlen) / sizeof (struct info) <= nargs) |
531b0165 | 3605 | memory_full (SIZE_MAX); |
37910ab2 PE |
3606 | SAFE_ALLOCA (info, struct info *, (nargs + 1) * sizeof *info + formatlen); |
3607 | discarded = (char *) &info[nargs + 1]; | |
3608 | for (i = 0; i < nargs + 1; i++) | |
3609 | { | |
3610 | info[i].start = -1; | |
3611 | info[i].intervals = info[i].converted_to_string = 0; | |
3612 | } | |
3613 | memset (discarded, 0, formatlen); | |
3614 | } | |
3615 | ||
e781c49e RS |
3616 | /* Try to determine whether the result should be multibyte. |
3617 | This is not always right; sometimes the result needs to be multibyte | |
3618 | because of an object that we will pass through prin1, | |
3619 | and in that case, we won't know it here. */ | |
37910ab2 PE |
3620 | multibyte_format = STRING_MULTIBYTE (args[0]); |
3621 | multibyte = multibyte_format; | |
3622 | for (n = 1; !multibyte && n < nargs; n++) | |
3623 | if (STRINGP (args[n]) && STRING_MULTIBYTE (args[n])) | |
3624 | multibyte = 1; | |
67965a98 | 3625 | |
e781c49e | 3626 | /* If we start out planning a unibyte result, |
37910ab2 | 3627 | then discover it has to be multibyte, we jump back to retry. */ |
e781c49e RS |
3628 | retry: |
3629 | ||
37910ab2 PE |
3630 | p = buf; |
3631 | nchars = 0; | |
3632 | n = 0; | |
d147ee84 | 3633 | |
37910ab2 PE |
3634 | /* Scan the format and store result in BUF. */ |
3635 | format = format_start; | |
3636 | end = format + formatlen; | |
3637 | maybe_combine_byte = 0; | |
35692fe0 | 3638 | |
35692fe0 | 3639 | while (format != end) |
37910ab2 PE |
3640 | { |
3641 | /* The values of N and FORMAT when the loop body is entered. */ | |
f66c7cf8 | 3642 | ptrdiff_t n0 = n; |
37910ab2 | 3643 | char *format0 = format; |
35692fe0 | 3644 | |
37910ab2 PE |
3645 | /* Bytes needed to represent the output of this conversion. */ |
3646 | EMACS_INT convbytes; | |
537dfb13 | 3647 | |
37910ab2 PE |
3648 | if (*format == '%') |
3649 | { | |
3650 | /* General format specifications look like | |
a432bfe5 | 3651 | |
37910ab2 | 3652 | '%' [flags] [field-width] [precision] format |
a432bfe5 | 3653 | |
37910ab2 | 3654 | where |
a432bfe5 | 3655 | |
37910ab2 PE |
3656 | flags ::= [-+0# ]+ |
3657 | field-width ::= [0-9]+ | |
3658 | precision ::= '.' [0-9]* | |
a432bfe5 | 3659 | |
37910ab2 PE |
3660 | If a field-width is specified, it specifies to which width |
3661 | the output should be padded with blanks, if the output | |
3662 | string is shorter than field-width. | |
a432bfe5 | 3663 | |
37910ab2 PE |
3664 | If precision is specified, it specifies the number of |
3665 | digits to print after the '.' for floats, or the max. | |
3666 | number of chars to print from a string. */ | |
a432bfe5 | 3667 | |
37910ab2 PE |
3668 | int minus_flag = 0; |
3669 | int plus_flag = 0; | |
3670 | int space_flag = 0; | |
3671 | int sharp_flag = 0; | |
3672 | int zero_flag = 0; | |
3673 | EMACS_INT field_width; | |
3674 | int precision_given; | |
3675 | uintmax_t precision = UINTMAX_MAX; | |
3676 | char *num_end; | |
3677 | char conversion; | |
a432bfe5 | 3678 | |
37910ab2 PE |
3679 | while (1) |
3680 | { | |
3681 | switch (*++format) | |
3682 | { | |
3683 | case '-': minus_flag = 1; continue; | |
3684 | case '+': plus_flag = 1; continue; | |
3685 | case ' ': space_flag = 1; continue; | |
3686 | case '#': sharp_flag = 1; continue; | |
3687 | case '0': zero_flag = 1; continue; | |
3688 | } | |
3689 | break; | |
3690 | } | |
35692fe0 | 3691 | |
37910ab2 PE |
3692 | /* Ignore flags when sprintf ignores them. */ |
3693 | space_flag &= ~ plus_flag; | |
3694 | zero_flag &= ~ minus_flag; | |
1f24f4fd | 3695 | |
35692fe0 | 3696 | { |
37910ab2 PE |
3697 | uintmax_t w = strtoumax (format, &num_end, 10); |
3698 | if (max_bufsize <= w) | |
3699 | string_overflow (); | |
3700 | field_width = w; | |
35692fe0 | 3701 | } |
37910ab2 PE |
3702 | precision_given = *num_end == '.'; |
3703 | if (precision_given) | |
3704 | precision = strtoumax (num_end + 1, &num_end, 10); | |
3705 | format = num_end; | |
3706 | ||
3707 | if (format == end) | |
3708 | error ("Format string ends in middle of format specifier"); | |
3709 | ||
3710 | memset (&discarded[format0 - format_start], 1, format - format0); | |
3711 | conversion = *format; | |
3712 | if (conversion == '%') | |
7812ba2d | 3713 | goto copy_char; |
d147ee84 | 3714 | discarded[format - format_start] = 1; |
1f24f4fd | 3715 | format++; |
fb893977 | 3716 | |
37910ab2 PE |
3717 | ++n; |
3718 | if (! (n < nargs)) | |
3719 | error ("Not enough arguments for format string"); | |
3720 | ||
3721 | /* For 'S', prin1 the argument, and then treat like 's'. | |
3722 | For 's', princ any argument that is not a string or | |
3723 | symbol. But don't do this conversion twice, which might | |
3724 | happen after retrying. */ | |
3725 | if ((conversion == 'S' | |
3726 | || (conversion == 's' | |
3727 | && ! STRINGP (args[n]) && ! SYMBOLP (args[n])))) | |
f555f8cf | 3728 | { |
37910ab2 | 3729 | if (! info[n].converted_to_string) |
f555f8cf | 3730 | { |
37910ab2 PE |
3731 | Lisp_Object noescape = conversion == 'S' ? Qnil : Qt; |
3732 | args[n] = Fprin1_to_string (args[n], noescape); | |
3733 | info[n].converted_to_string = 1; | |
3734 | if (STRING_MULTIBYTE (args[n]) && ! multibyte) | |
3735 | { | |
3736 | multibyte = 1; | |
3737 | goto retry; | |
3738 | } | |
f555f8cf | 3739 | } |
37910ab2 | 3740 | conversion = 's'; |
f555f8cf | 3741 | } |
37910ab2 PE |
3742 | else if (conversion == 'c') |
3743 | { | |
3744 | if (FLOATP (args[n])) | |
3745 | { | |
3746 | double d = XFLOAT_DATA (args[n]); | |
3747 | args[n] = make_number (FIXNUM_OVERFLOW_P (d) ? -1 : d); | |
3748 | } | |
f555f8cf | 3749 | |
37910ab2 PE |
3750 | if (INTEGERP (args[n]) && ! ASCII_CHAR_P (XINT (args[n]))) |
3751 | { | |
3752 | if (!multibyte) | |
3753 | { | |
3754 | multibyte = 1; | |
3755 | goto retry; | |
3756 | } | |
3757 | args[n] = Fchar_to_string (args[n]); | |
3758 | info[n].converted_to_string = 1; | |
3759 | } | |
f555f8cf | 3760 | |
37910ab2 PE |
3761 | if (info[n].converted_to_string) |
3762 | conversion = 's'; | |
3763 | zero_flag = 0; | |
d147ee84 | 3764 | } |
35692fe0 | 3765 | |
37910ab2 | 3766 | if (SYMBOLP (args[n])) |
1f24f4fd | 3767 | { |
37910ab2 PE |
3768 | args[n] = SYMBOL_NAME (args[n]); |
3769 | if (STRING_MULTIBYTE (args[n]) && ! multibyte) | |
3770 | { | |
3771 | multibyte = 1; | |
3772 | goto retry; | |
3773 | } | |
1f24f4fd RS |
3774 | } |
3775 | ||
37910ab2 | 3776 | if (conversion == 's') |
1f24f4fd | 3777 | { |
ac42d7b9 KG |
3778 | /* handle case (precision[n] >= 0) */ |
3779 | ||
37910ab2 | 3780 | EMACS_INT width, padding, nbytes; |
579c18d0 | 3781 | EMACS_INT nchars_string; |
ac42d7b9 | 3782 | |
37910ab2 PE |
3783 | EMACS_INT prec = -1; |
3784 | if (precision_given && precision <= TYPE_MAXIMUM (EMACS_INT)) | |
3785 | prec = precision; | |
3786 | ||
ac42d7b9 KG |
3787 | /* lisp_string_width ignores a precision of 0, but GNU |
3788 | libc functions print 0 characters when the precision | |
3789 | is 0. Imitate libc behavior here. Changing | |
3790 | lisp_string_width is the right thing, and will be | |
3791 | done, but meanwhile we work with it. */ | |
3792 | ||
37910ab2 | 3793 | if (prec == 0) |
ac42d7b9 | 3794 | width = nchars_string = nbytes = 0; |
ac42d7b9 | 3795 | else |
37910ab2 PE |
3796 | { |
3797 | EMACS_INT nch, nby; | |
3798 | width = lisp_string_width (args[n], prec, &nch, &nby); | |
3799 | if (prec < 0) | |
3800 | { | |
3801 | nchars_string = SCHARS (args[n]); | |
3802 | nbytes = SBYTES (args[n]); | |
3803 | } | |
3804 | else | |
3805 | { | |
3806 | nchars_string = nch; | |
3807 | nbytes = nby; | |
3808 | } | |
ac42d7b9 | 3809 | } |
25c9e7fb | 3810 | |
37910ab2 PE |
3811 | convbytes = nbytes; |
3812 | if (convbytes && multibyte && ! STRING_MULTIBYTE (args[n])) | |
3813 | convbytes = count_size_as_multibyte (SDATA (args[n]), nbytes); | |
1f24f4fd | 3814 | |
37910ab2 | 3815 | padding = width < field_width ? field_width - width : 0; |
ac42d7b9 | 3816 | |
37910ab2 PE |
3817 | if (max_bufsize - padding <= convbytes) |
3818 | string_overflow (); | |
3819 | convbytes += padding; | |
3820 | if (convbytes <= buf + bufsize - p) | |
3821 | { | |
3822 | if (! minus_flag) | |
3823 | { | |
3824 | memset (p, ' ', padding); | |
3825 | p += padding; | |
3826 | nchars += padding; | |
3827 | } | |
ac42d7b9 | 3828 | |
37910ab2 PE |
3829 | if (p > buf |
3830 | && multibyte | |
3831 | && !ASCII_BYTE_P (*((unsigned char *) p - 1)) | |
3832 | && STRING_MULTIBYTE (args[n]) | |
3833 | && !CHAR_HEAD_P (SREF (args[n], 0))) | |
3834 | maybe_combine_byte = 1; | |
1f24f4fd | 3835 | |
37910ab2 PE |
3836 | p += copy_text (SDATA (args[n]), (unsigned char *) p, |
3837 | nbytes, | |
3838 | STRING_MULTIBYTE (args[n]), multibyte); | |
8f2c9ed8 | 3839 | |
37910ab2 PE |
3840 | info[n].start = nchars; |
3841 | nchars += nchars_string; | |
3842 | info[n].end = nchars; | |
3843 | ||
3844 | if (minus_flag) | |
3845 | { | |
3846 | memset (p, ' ', padding); | |
3847 | p += padding; | |
3848 | nchars += padding; | |
3849 | } | |
5e6d5493 | 3850 | |
37910ab2 PE |
3851 | /* If this argument has text properties, record where |
3852 | in the result string it appears. */ | |
3853 | if (STRING_INTERVALS (args[n])) | |
3854 | info[n].intervals = arg_intervals = 1; | |
3855 | ||
3856 | continue; | |
3857 | } | |
1f24f4fd | 3858 | } |
37910ab2 PE |
3859 | else if (! (conversion == 'c' || conversion == 'd' |
3860 | || conversion == 'e' || conversion == 'f' | |
3861 | || conversion == 'g' || conversion == 'i' | |
3862 | || conversion == 'o' || conversion == 'x' | |
3863 | || conversion == 'X')) | |
3864 | error ("Invalid format operation %%%c", | |
3865 | STRING_CHAR ((unsigned char *) format - 1)); | |
3866 | else if (! (INTEGERP (args[n]) || FLOATP (args[n]))) | |
3867 | error ("Format specifier doesn't match argument type"); | |
3868 | else | |
1f24f4fd | 3869 | { |
37910ab2 PE |
3870 | enum |
3871 | { | |
3872 | /* Maximum precision for a %f conversion such that the | |
333f9019 | 3873 | trailing output digit might be nonzero. Any precision |
37910ab2 PE |
3874 | larger than this will not yield useful information. */ |
3875 | USEFUL_PRECISION_MAX = | |
3876 | ((1 - DBL_MIN_EXP) | |
3877 | * (FLT_RADIX == 2 || FLT_RADIX == 10 ? 1 | |
3878 | : FLT_RADIX == 16 ? 4 | |
3879 | : -1)), | |
3880 | ||
3881 | /* Maximum number of bytes generated by any format, if | |
81f7c12e | 3882 | precision is no more than USEFUL_PRECISION_MAX. |
37910ab2 PE |
3883 | On all practical hosts, %f is the worst case. */ |
3884 | SPRINTF_BUFSIZE = | |
a81d11a3 PE |
3885 | sizeof "-." + (DBL_MAX_10_EXP + 1) + USEFUL_PRECISION_MAX, |
3886 | ||
3887 | /* Length of pM (that is, of pMd without the | |
3888 | trailing "d"). */ | |
3889 | pMlen = sizeof pMd - 2 | |
37910ab2 PE |
3890 | }; |
3891 | verify (0 < USEFUL_PRECISION_MAX); | |
3892 | ||
3893 | int prec; | |
3894 | EMACS_INT padding, sprintf_bytes; | |
3895 | uintmax_t excess_precision, numwidth; | |
3896 | uintmax_t leading_zeros = 0, trailing_zeros = 0; | |
3897 | ||
3898 | char sprintf_buf[SPRINTF_BUFSIZE]; | |
3899 | ||
3900 | /* Copy of conversion specification, modified somewhat. | |
3901 | At most three flags F can be specified at once. */ | |
a81d11a3 | 3902 | char convspec[sizeof "%FFF.*d" + pMlen]; |
37910ab2 PE |
3903 | |
3904 | /* Avoid undefined behavior in underlying sprintf. */ | |
3905 | if (conversion == 'd' || conversion == 'i') | |
3906 | sharp_flag = 0; | |
3907 | ||
3908 | /* Create the copy of the conversion specification, with | |
3909 | any width and precision removed, with ".*" inserted, | |
a81d11a3 | 3910 | and with pM inserted for integer formats. */ |
37910ab2 PE |
3911 | { |
3912 | char *f = convspec; | |
3913 | *f++ = '%'; | |
3914 | *f = '-'; f += minus_flag; | |
3915 | *f = '+'; f += plus_flag; | |
3916 | *f = ' '; f += space_flag; | |
3917 | *f = '#'; f += sharp_flag; | |
3918 | *f = '0'; f += zero_flag; | |
3919 | *f++ = '.'; | |
3920 | *f++ = '*'; | |
3921 | if (conversion == 'd' || conversion == 'i' | |
3922 | || conversion == 'o' || conversion == 'x' | |
3923 | || conversion == 'X') | |
3924 | { | |
a81d11a3 PE |
3925 | memcpy (f, pMd, pMlen); |
3926 | f += pMlen; | |
37910ab2 PE |
3927 | zero_flag &= ~ precision_given; |
3928 | } | |
3929 | *f++ = conversion; | |
3930 | *f = '\0'; | |
3931 | } | |
1f24f4fd | 3932 | |
37910ab2 PE |
3933 | prec = -1; |
3934 | if (precision_given) | |
3935 | prec = min (precision, USEFUL_PRECISION_MAX); | |
3936 | ||
3937 | /* Use sprintf to format this number into sprintf_buf. Omit | |
3938 | padding and excess precision, though, because sprintf limits | |
3939 | output length to INT_MAX. | |
3940 | ||
3941 | There are four types of conversion: double, unsigned | |
3942 | char (passed as int), wide signed int, and wide | |
3943 | unsigned int. Treat them separately because the | |
3944 | sprintf ABI is sensitive to which type is passed. Be | |
3945 | careful about integer overflow, NaNs, infinities, and | |
3946 | conversions; for example, the min and max macros are | |
3947 | not suitable here. */ | |
3948 | if (conversion == 'e' || conversion == 'f' || conversion == 'g') | |
3949 | { | |
3950 | double x = (INTEGERP (args[n]) | |
3951 | ? XINT (args[n]) | |
3952 | : XFLOAT_DATA (args[n])); | |
3953 | sprintf_bytes = sprintf (sprintf_buf, convspec, prec, x); | |
3954 | } | |
3955 | else if (conversion == 'c') | |
3956 | { | |
3957 | /* Don't use sprintf here, as it might mishandle prec. */ | |
3958 | sprintf_buf[0] = XINT (args[n]); | |
3959 | sprintf_bytes = prec != 0; | |
3960 | } | |
3961 | else if (conversion == 'd') | |
3962 | { | |
3963 | /* For float, maybe we should use "%1.0f" | |
3964 | instead so it also works for values outside | |
3965 | the integer range. */ | |
a81d11a3 | 3966 | printmax_t x; |
37910ab2 PE |
3967 | if (INTEGERP (args[n])) |
3968 | x = XINT (args[n]); | |
3969 | else | |
3970 | { | |
3971 | double d = XFLOAT_DATA (args[n]); | |
3972 | if (d < 0) | |
3973 | { | |
a81d11a3 | 3974 | x = TYPE_MINIMUM (printmax_t); |
37910ab2 PE |
3975 | if (x < d) |
3976 | x = d; | |
3977 | } | |
3978 | else | |
3979 | { | |
a81d11a3 | 3980 | x = TYPE_MAXIMUM (printmax_t); |
37910ab2 PE |
3981 | if (d < x) |
3982 | x = d; | |
3983 | } | |
3984 | } | |
3985 | sprintf_bytes = sprintf (sprintf_buf, convspec, prec, x); | |
3986 | } | |
0f860bd7 | 3987 | else |
de92d4d4 | 3988 | { |
37910ab2 | 3989 | /* Don't sign-extend for octal or hex printing. */ |
a81d11a3 | 3990 | uprintmax_t x; |
37910ab2 PE |
3991 | if (INTEGERP (args[n])) |
3992 | x = XUINT (args[n]); | |
3993 | else | |
0f860bd7 | 3994 | { |
37910ab2 PE |
3995 | double d = XFLOAT_DATA (args[n]); |
3996 | if (d < 0) | |
3997 | x = 0; | |
3998 | else | |
3999 | { | |
a81d11a3 | 4000 | x = TYPE_MAXIMUM (uprintmax_t); |
37910ab2 PE |
4001 | if (d < x) |
4002 | x = d; | |
4003 | } | |
0f860bd7 | 4004 | } |
37910ab2 PE |
4005 | sprintf_bytes = sprintf (sprintf_buf, convspec, prec, x); |
4006 | } | |
0f860bd7 | 4007 | |
37910ab2 PE |
4008 | /* Now the length of the formatted item is known, except it omits |
4009 | padding and excess precision. Deal with excess precision | |
4010 | first. This happens only when the format specifies | |
4011 | ridiculously large precision. */ | |
4012 | excess_precision = precision - prec; | |
4013 | if (excess_precision) | |
4014 | { | |
4015 | if (conversion == 'e' || conversion == 'f' | |
4016 | || conversion == 'g') | |
ff6e6ac8 | 4017 | { |
37910ab2 PE |
4018 | if ((conversion == 'g' && ! sharp_flag) |
4019 | || ! ('0' <= sprintf_buf[sprintf_bytes - 1] | |
4020 | && sprintf_buf[sprintf_bytes - 1] <= '9')) | |
4021 | excess_precision = 0; | |
ff6e6ac8 | 4022 | else |
37910ab2 PE |
4023 | { |
4024 | if (conversion == 'g') | |
4025 | { | |
4026 | char *dot = strchr (sprintf_buf, '.'); | |
4027 | if (!dot) | |
4028 | excess_precision = 0; | |
4029 | } | |
4030 | } | |
4031 | trailing_zeros = excess_precision; | |
ff6e6ac8 | 4032 | } |
de92d4d4 | 4033 | else |
37910ab2 | 4034 | leading_zeros = excess_precision; |
de92d4d4 | 4035 | } |
1f24f4fd | 4036 | |
37910ab2 PE |
4037 | /* Compute the total bytes needed for this item, including |
4038 | excess precision and padding. */ | |
4039 | numwidth = sprintf_bytes + excess_precision; | |
4040 | padding = numwidth < field_width ? field_width - numwidth : 0; | |
4041 | if (max_bufsize - sprintf_bytes <= excess_precision | |
4042 | || max_bufsize - padding <= numwidth) | |
4043 | string_overflow (); | |
4044 | convbytes = numwidth + padding; | |
4045 | ||
4046 | if (convbytes <= buf + bufsize - p) | |
4047 | { | |
4048 | /* Copy the formatted item from sprintf_buf into buf, | |
4049 | inserting padding and excess-precision zeros. */ | |
4050 | ||
4051 | char *src = sprintf_buf; | |
4052 | char src0 = src[0]; | |
4053 | int exponent_bytes = 0; | |
4054 | int signedp = src0 == '-' || src0 == '+' || src0 == ' '; | |
4055 | int significand_bytes; | |
172418ad AS |
4056 | if (zero_flag |
4057 | && ((src[signedp] >= '0' && src[signedp] <= '9') | |
4058 | || (src[signedp] >= 'a' && src[signedp] <= 'f') | |
4059 | || (src[signedp] >= 'A' && src[signedp] <= 'F'))) | |
37910ab2 PE |
4060 | { |
4061 | leading_zeros += padding; | |
4062 | padding = 0; | |
4063 | } | |
4064 | ||
4065 | if (excess_precision | |
4066 | && (conversion == 'e' || conversion == 'g')) | |
4067 | { | |
4068 | char *e = strchr (src, 'e'); | |
4069 | if (e) | |
4070 | exponent_bytes = src + sprintf_bytes - e; | |
4071 | } | |
4072 | ||
4073 | if (! minus_flag) | |
4074 | { | |
4075 | memset (p, ' ', padding); | |
4076 | p += padding; | |
4077 | nchars += padding; | |
4078 | } | |
4079 | ||
4080 | *p = src0; | |
4081 | src += signedp; | |
4082 | p += signedp; | |
4083 | memset (p, '0', leading_zeros); | |
4084 | p += leading_zeros; | |
4085 | significand_bytes = sprintf_bytes - signedp - exponent_bytes; | |
4086 | memcpy (p, src, significand_bytes); | |
4087 | p += significand_bytes; | |
4088 | src += significand_bytes; | |
4089 | memset (p, '0', trailing_zeros); | |
4090 | p += trailing_zeros; | |
4091 | memcpy (p, src, exponent_bytes); | |
4092 | p += exponent_bytes; | |
4093 | ||
4094 | info[n].start = nchars; | |
4095 | nchars += leading_zeros + sprintf_bytes + trailing_zeros; | |
4096 | info[n].end = nchars; | |
4097 | ||
4098 | if (minus_flag) | |
4099 | { | |
4100 | memset (p, ' ', padding); | |
4101 | p += padding; | |
4102 | nchars += padding; | |
4103 | } | |
4104 | ||
4105 | continue; | |
4106 | } | |
4107 | } | |
4108 | } | |
4109 | else | |
4110 | copy_char: | |
4111 | { | |
4112 | /* Copy a single character from format to buf. */ | |
4113 | ||
4114 | char *src = format; | |
4115 | unsigned char str[MAX_MULTIBYTE_LENGTH]; | |
4116 | ||
4117 | if (multibyte_format) | |
4118 | { | |
4119 | /* Copy a whole multibyte character. */ | |
8f2917e4 | 4120 | if (p > buf |
25aa5d64 | 4121 | && !ASCII_BYTE_P (*((unsigned char *) p - 1)) |
37910ab2 | 4122 | && !CHAR_HEAD_P (*format)) |
8f2917e4 | 4123 | maybe_combine_byte = 1; |
37910ab2 PE |
4124 | |
4125 | do | |
4126 | format++; | |
4127 | while (! CHAR_HEAD_P (*format)); | |
4128 | ||
a02719a3 | 4129 | convbytes = format - src; |
7812ba2d | 4130 | memset (&discarded[src + 1 - format_start], 2, convbytes - 1); |
37910ab2 PE |
4131 | } |
4132 | else | |
4133 | { | |
4134 | unsigned char uc = *format++; | |
4135 | if (! multibyte || ASCII_BYTE_P (uc)) | |
4136 | convbytes = 1; | |
9a599130 | 4137 | else |
37910ab2 PE |
4138 | { |
4139 | int c = BYTE8_TO_CHAR (uc); | |
4140 | convbytes = CHAR_STRING (c, str); | |
4141 | src = (char *) str; | |
4142 | } | |
1f24f4fd | 4143 | } |
d147ee84 | 4144 | |
37910ab2 | 4145 | if (convbytes <= buf + bufsize - p) |
d147ee84 | 4146 | { |
37910ab2 PE |
4147 | memcpy (p, src, convbytes); |
4148 | p += convbytes; | |
4149 | nchars++; | |
4150 | continue; | |
d147ee84 | 4151 | } |
7df74da6 | 4152 | } |
1f24f4fd | 4153 | |
37910ab2 PE |
4154 | /* There wasn't enough room to store this conversion or single |
4155 | character. CONVBYTES says how much room is needed. Allocate | |
4156 | enough room (and then some) and do it again. */ | |
4157 | { | |
c9f8d652 | 4158 | ptrdiff_t used = p - buf; |
37910ab2 PE |
4159 | |
4160 | if (max_bufsize - used < convbytes) | |
4161 | string_overflow (); | |
4162 | bufsize = used + convbytes; | |
4163 | bufsize = bufsize < max_bufsize / 2 ? bufsize * 2 : max_bufsize; | |
4164 | ||
4165 | if (buf == initial_buffer) | |
4166 | { | |
4167 | buf = xmalloc (bufsize); | |
4168 | sa_must_free = 1; | |
4169 | buf_save_value = make_save_value (buf, 0); | |
4170 | record_unwind_protect (safe_alloca_unwind, buf_save_value); | |
4171 | memcpy (buf, initial_buffer, used); | |
4172 | } | |
4173 | else | |
4174 | XSAVE_VALUE (buf_save_value)->pointer = buf = xrealloc (buf, bufsize); | |
4175 | ||
4176 | p = buf + used; | |
4177 | } | |
4178 | ||
4179 | format = format0; | |
4180 | n = n0; | |
1f24f4fd RS |
4181 | } |
4182 | ||
37910ab2 | 4183 | if (bufsize < p - buf) |
a432bfe5 GM |
4184 | abort (); |
4185 | ||
8f2917e4 | 4186 | if (maybe_combine_byte) |
e7f8264d | 4187 | nchars = multibyte_chars_in_text ((unsigned char *) buf, p - buf); |
5f75e666 | 4188 | val = make_specified_string (buf, nchars, p - buf, multibyte); |
8d6179dc | 4189 | |
1f24f4fd | 4190 | /* If we allocated BUF with malloc, free it too. */ |
e65837df | 4191 | SAFE_FREE (); |
35692fe0 | 4192 | |
5e6d5493 GM |
4193 | /* If the format string has text properties, or any of the string |
4194 | arguments has text properties, set up text properties of the | |
4195 | result string. */ | |
34a7a267 | 4196 | |
d147ee84 | 4197 | if (STRING_INTERVALS (args[0]) || arg_intervals) |
5e6d5493 GM |
4198 | { |
4199 | Lisp_Object len, new_len, props; | |
4200 | struct gcpro gcpro1; | |
34a7a267 | 4201 | |
5e6d5493 | 4202 | /* Add text properties from the format string. */ |
d5db4077 | 4203 | len = make_number (SCHARS (args[0])); |
5e6d5493 GM |
4204 | props = text_property_list (args[0], make_number (0), len, Qnil); |
4205 | GCPRO1 (props); | |
34a7a267 | 4206 | |
5e6d5493 GM |
4207 | if (CONSP (props)) |
4208 | { | |
29cdc13e | 4209 | EMACS_INT bytepos = 0, position = 0, translated = 0; |
37910ab2 | 4210 | EMACS_INT argn = 1; |
d147ee84 RS |
4211 | Lisp_Object list; |
4212 | ||
4213 | /* Adjust the bounds of each text property | |
4214 | to the proper start and end in the output string. */ | |
d147ee84 | 4215 | |
15fad037 KS |
4216 | /* Put the positions in PROPS in increasing order, so that |
4217 | we can do (effectively) one scan through the position | |
4218 | space of the format string. */ | |
4219 | props = Fnreverse (props); | |
4220 | ||
4221 | /* BYTEPOS is the byte position in the format string, | |
d147ee84 RS |
4222 | POSITION is the untranslated char position in it, |
4223 | TRANSLATED is the translated char position in BUF, | |
4224 | and ARGN is the number of the next arg we will come to. */ | |
4225 | for (list = props; CONSP (list); list = XCDR (list)) | |
4226 | { | |
f3ce1df8 | 4227 | Lisp_Object item; |
29cdc13e | 4228 | EMACS_INT pos; |
d147ee84 RS |
4229 | |
4230 | item = XCAR (list); | |
4231 | ||
4232 | /* First adjust the property start position. */ | |
4233 | pos = XINT (XCAR (item)); | |
4234 | ||
4235 | /* Advance BYTEPOS, POSITION, TRANSLATED and ARGN | |
4236 | up to this position. */ | |
4237 | for (; position < pos; bytepos++) | |
4238 | { | |
4239 | if (! discarded[bytepos]) | |
4240 | position++, translated++; | |
4241 | else if (discarded[bytepos] == 1) | |
4242 | { | |
4243 | position++; | |
4244 | if (translated == info[argn].start) | |
4245 | { | |
4246 | translated += info[argn].end - info[argn].start; | |
4247 | argn++; | |
4248 | } | |
4249 | } | |
4250 | } | |
4251 | ||
4252 | XSETCAR (item, make_number (translated)); | |
4253 | ||
4254 | /* Likewise adjust the property end position. */ | |
4255 | pos = XINT (XCAR (XCDR (item))); | |
4256 | ||
d40ec4a0 | 4257 | for (; position < pos; bytepos++) |
d147ee84 RS |
4258 | { |
4259 | if (! discarded[bytepos]) | |
4260 | position++, translated++; | |
4261 | else if (discarded[bytepos] == 1) | |
4262 | { | |
4263 | position++; | |
4264 | if (translated == info[argn].start) | |
4265 | { | |
4266 | translated += info[argn].end - info[argn].start; | |
4267 | argn++; | |
4268 | } | |
4269 | } | |
4270 | } | |
4271 | ||
4272 | XSETCAR (XCDR (item), make_number (translated)); | |
4273 | } | |
4274 | ||
5e6d5493 GM |
4275 | add_text_properties_from_list (val, props, make_number (0)); |
4276 | } | |
4277 | ||
4278 | /* Add text properties from arguments. */ | |
d147ee84 | 4279 | if (arg_intervals) |
5e6d5493 | 4280 | for (n = 1; n < nargs; ++n) |
d147ee84 | 4281 | if (info[n].intervals) |
5e6d5493 | 4282 | { |
d5db4077 | 4283 | len = make_number (SCHARS (args[n])); |
5e6d5493 GM |
4284 | new_len = make_number (info[n].end - info[n].start); |
4285 | props = text_property_list (args[n], make_number (0), len, Qnil); | |
e398c61c CY |
4286 | props = extend_property_ranges (props, new_len); |
4287 | /* If successive arguments have properties, be sure that | |
be17069b KH |
4288 | the value of `composition' property be the copy. */ |
4289 | if (n > 1 && info[n - 1].end) | |
4290 | make_composition_value_copy (props); | |
5e6d5493 GM |
4291 | add_text_properties_from_list (val, props, |
4292 | make_number (info[n].start)); | |
4293 | } | |
4294 | ||
4295 | UNGCPRO; | |
4296 | } | |
4297 | ||
8d6179dc | 4298 | return val; |
35692fe0 JB |
4299 | } |
4300 | ||
35692fe0 | 4301 | Lisp_Object |
a8fe7202 | 4302 | format2 (const char *string1, Lisp_Object arg0, Lisp_Object arg1) |
d40dc1d0 RS |
4303 | { |
4304 | Lisp_Object args[3]; | |
d40dc1d0 RS |
4305 | args[0] = build_string (string1); |
4306 | args[1] = arg0; | |
4307 | args[2] = arg1; | |
4308 | return Fformat (3, args); | |
35692fe0 JB |
4309 | } |
4310 | \f | |
4311 | DEFUN ("char-equal", Fchar_equal, Schar_equal, 2, 2, 0, | |
7ee72033 | 4312 | doc: /* Return t if two characters match, optionally ignoring case. |
a1f17501 | 4313 | Both arguments must be characters (i.e. integers). |
7ee72033 | 4314 | Case is ignored if `case-fold-search' is non-nil in the current buffer. */) |
5842a27b | 4315 | (register Lisp_Object c1, Lisp_Object c2) |
35692fe0 | 4316 | { |
1b5d98bb | 4317 | int i1, i2; |
253c3c82 | 4318 | /* Check they're chars, not just integers, otherwise we could get array |
5da9919f | 4319 | bounds violations in downcase. */ |
253c3c82 SM |
4320 | CHECK_CHARACTER (c1); |
4321 | CHECK_CHARACTER (c2); | |
35692fe0 | 4322 | |
1b5d98bb | 4323 | if (XINT (c1) == XINT (c2)) |
35692fe0 | 4324 | return Qt; |
4b4deea2 | 4325 | if (NILP (BVAR (current_buffer, case_fold_search))) |
1b5d98bb RS |
4326 | return Qnil; |
4327 | ||
e5112ecb | 4328 | i1 = XFASTINT (c1); |
4b4deea2 | 4329 | if (NILP (BVAR (current_buffer, enable_multibyte_characters)) |
e5112ecb KH |
4330 | && ! ASCII_CHAR_P (i1)) |
4331 | { | |
4332 | MAKE_CHAR_MULTIBYTE (i1); | |
4333 | } | |
4334 | i2 = XFASTINT (c2); | |
4b4deea2 | 4335 | if (NILP (BVAR (current_buffer, enable_multibyte_characters)) |
e5112ecb KH |
4336 | && ! ASCII_CHAR_P (i2)) |
4337 | { | |
4338 | MAKE_CHAR_MULTIBYTE (i2); | |
4339 | } | |
0da09c43 | 4340 | return (downcase (i1) == downcase (i2) ? Qt : Qnil); |
35692fe0 | 4341 | } |
b229b8d1 RS |
4342 | \f |
4343 | /* Transpose the markers in two regions of the current buffer, and | |
4344 | adjust the ones between them if necessary (i.e.: if the regions | |
4345 | differ in size). | |
4346 | ||
ec1c14f6 RS |
4347 | START1, END1 are the character positions of the first region. |
4348 | START1_BYTE, END1_BYTE are the byte positions. | |
4349 | START2, END2 are the character positions of the second region. | |
4350 | START2_BYTE, END2_BYTE are the byte positions. | |
4351 | ||
b229b8d1 RS |
4352 | Traverses the entire marker list of the buffer to do so, adding an |
4353 | appropriate amount to some, subtracting from some, and leaving the | |
4354 | rest untouched. Most of this is copied from adjust_markers in insdel.c. | |
34a7a267 | 4355 | |
ec1c14f6 | 4356 | It's the caller's job to ensure that START1 <= END1 <= START2 <= END2. */ |
b229b8d1 | 4357 | |
acb7cc89 | 4358 | static void |
29cdc13e EZ |
4359 | transpose_markers (EMACS_INT start1, EMACS_INT end1, |
4360 | EMACS_INT start2, EMACS_INT end2, | |
4361 | EMACS_INT start1_byte, EMACS_INT end1_byte, | |
4362 | EMACS_INT start2_byte, EMACS_INT end2_byte) | |
b229b8d1 | 4363 | { |
29cdc13e | 4364 | register EMACS_INT amt1, amt1_byte, amt2, amt2_byte, diff, diff_byte, mpos; |
12038f9f | 4365 | register struct Lisp_Marker *marker; |
b229b8d1 | 4366 | |
03240d11 | 4367 | /* Update point as if it were a marker. */ |
8de1d5f0 KH |
4368 | if (PT < start1) |
4369 | ; | |
4370 | else if (PT < end1) | |
ec1c14f6 RS |
4371 | TEMP_SET_PT_BOTH (PT + (end2 - end1), |
4372 | PT_BYTE + (end2_byte - end1_byte)); | |
8de1d5f0 | 4373 | else if (PT < start2) |
ec1c14f6 RS |
4374 | TEMP_SET_PT_BOTH (PT + (end2 - start2) - (end1 - start1), |
4375 | (PT_BYTE + (end2_byte - start2_byte) | |
4376 | - (end1_byte - start1_byte))); | |
8de1d5f0 | 4377 | else if (PT < end2) |
ec1c14f6 RS |
4378 | TEMP_SET_PT_BOTH (PT - (start2 - start1), |
4379 | PT_BYTE - (start2_byte - start1_byte)); | |
8de1d5f0 | 4380 | |
03240d11 KH |
4381 | /* We used to adjust the endpoints here to account for the gap, but that |
4382 | isn't good enough. Even if we assume the caller has tried to move the | |
4383 | gap out of our way, it might still be at start1 exactly, for example; | |
4384 | and that places it `inside' the interval, for our purposes. The amount | |
4385 | of adjustment is nontrivial if there's a `denormalized' marker whose | |
4386 | position is between GPT and GPT + GAP_SIZE, so it's simpler to leave | |
4387 | the dirty work to Fmarker_position, below. */ | |
b229b8d1 RS |
4388 | |
4389 | /* The difference between the region's lengths */ | |
4390 | diff = (end2 - start2) - (end1 - start1); | |
ec1c14f6 | 4391 | diff_byte = (end2_byte - start2_byte) - (end1_byte - start1_byte); |
34a7a267 | 4392 | |
b229b8d1 | 4393 | /* For shifting each marker in a region by the length of the other |
ec1c14f6 | 4394 | region plus the distance between the regions. */ |
b229b8d1 RS |
4395 | amt1 = (end2 - start2) + (start2 - end1); |
4396 | amt2 = (end1 - start1) + (start2 - end1); | |
ec1c14f6 RS |
4397 | amt1_byte = (end2_byte - start2_byte) + (start2_byte - end1_byte); |
4398 | amt2_byte = (end1_byte - start1_byte) + (start2_byte - end1_byte); | |
b229b8d1 | 4399 | |
12038f9f | 4400 | for (marker = BUF_MARKERS (current_buffer); marker; marker = marker->next) |
b229b8d1 | 4401 | { |
12038f9f | 4402 | mpos = marker->bytepos; |
ec1c14f6 RS |
4403 | if (mpos >= start1_byte && mpos < end2_byte) |
4404 | { | |
4405 | if (mpos < end1_byte) | |
4406 | mpos += amt1_byte; | |
4407 | else if (mpos < start2_byte) | |
4408 | mpos += diff_byte; | |
4409 | else | |
4410 | mpos -= amt2_byte; | |
12038f9f | 4411 | marker->bytepos = mpos; |
ec1c14f6 | 4412 | } |
12038f9f | 4413 | mpos = marker->charpos; |
03240d11 KH |
4414 | if (mpos >= start1 && mpos < end2) |
4415 | { | |
4416 | if (mpos < end1) | |
4417 | mpos += amt1; | |
4418 | else if (mpos < start2) | |
4419 | mpos += diff; | |
4420 | else | |
4421 | mpos -= amt2; | |
03240d11 | 4422 | } |
12038f9f | 4423 | marker->charpos = mpos; |
b229b8d1 RS |
4424 | } |
4425 | } | |
4426 | ||
4427 | DEFUN ("transpose-regions", Ftranspose_regions, Stranspose_regions, 4, 5, 0, | |
412f1fab | 4428 | doc: /* Transpose region STARTR1 to ENDR1 with STARTR2 to ENDR2. |
27a69fd9 | 4429 | The regions should not be overlapping, because the size of the buffer is |
a1f17501 PJ |
4430 | never changed in a transposition. |
4431 | ||
412f1fab | 4432 | Optional fifth arg LEAVE-MARKERS, if non-nil, means don't update |
a1f17501 PJ |
4433 | any markers that happen to be located in the regions. |
4434 | ||
7ee72033 | 4435 | Transposing beyond buffer boundaries is an error. */) |
5842a27b | 4436 | (Lisp_Object startr1, Lisp_Object endr1, Lisp_Object startr2, Lisp_Object endr2, Lisp_Object leave_markers) |
b229b8d1 | 4437 | { |
d47ecf8b SM |
4438 | register EMACS_INT start1, end1, start2, end2; |
4439 | EMACS_INT start1_byte, start2_byte, len1_byte, len2_byte; | |
4440 | EMACS_INT gap, len1, len_mid, len2; | |
3c6bc7d0 | 4441 | unsigned char *start1_addr, *start2_addr, *temp; |
b229b8d1 | 4442 | |
6cd0f478 | 4443 | INTERVAL cur_intv, tmp_interval1, tmp_interval_mid, tmp_interval2, tmp_interval3; |
916480c4 CY |
4444 | Lisp_Object buf; |
4445 | ||
4446 | XSETBUFFER (buf, current_buffer); | |
1e158d25 | 4447 | cur_intv = BUF_INTERVALS (current_buffer); |
b229b8d1 RS |
4448 | |
4449 | validate_region (&startr1, &endr1); | |
4450 | validate_region (&startr2, &endr2); | |
4451 | ||
4452 | start1 = XFASTINT (startr1); | |
4453 | end1 = XFASTINT (endr1); | |
4454 | start2 = XFASTINT (startr2); | |
4455 | end2 = XFASTINT (endr2); | |
4456 | gap = GPT; | |
4457 | ||
4458 | /* Swap the regions if they're reversed. */ | |
4459 | if (start2 < end1) | |
4460 | { | |
29cdc13e | 4461 | register EMACS_INT glumph = start1; |
b229b8d1 RS |
4462 | start1 = start2; |
4463 | start2 = glumph; | |
4464 | glumph = end1; | |
4465 | end1 = end2; | |
4466 | end2 = glumph; | |
4467 | } | |
4468 | ||
b229b8d1 RS |
4469 | len1 = end1 - start1; |
4470 | len2 = end2 - start2; | |
4471 | ||
4472 | if (start2 < end1) | |
dc3620af | 4473 | error ("Transposed regions overlap"); |
0f4aebc0 LL |
4474 | /* Nothing to change for adjacent regions with one being empty */ |
4475 | else if ((start1 == end1 || start2 == end2) && end1 == start2) | |
4476 | return Qnil; | |
b229b8d1 RS |
4477 | |
4478 | /* The possibilities are: | |
4479 | 1. Adjacent (contiguous) regions, or separate but equal regions | |
4480 | (no, really equal, in this case!), or | |
4481 | 2. Separate regions of unequal size. | |
34a7a267 | 4482 | |
b229b8d1 RS |
4483 | The worst case is usually No. 2. It means that (aside from |
4484 | potential need for getting the gap out of the way), there also | |
4485 | needs to be a shifting of the text between the two regions. So | |
4486 | if they are spread far apart, we are that much slower... sigh. */ | |
4487 | ||
4488 | /* It must be pointed out that the really studly thing to do would | |
4489 | be not to move the gap at all, but to leave it in place and work | |
4490 | around it if necessary. This would be extremely efficient, | |
4491 | especially considering that people are likely to do | |
4492 | transpositions near where they are working interactively, which | |
4493 | is exactly where the gap would be found. However, such code | |
4494 | would be much harder to write and to read. So, if you are | |
4495 | reading this comment and are feeling squirrely, by all means have | |
4496 | a go! I just didn't feel like doing it, so I will simply move | |
4497 | the gap the minimum distance to get it out of the way, and then | |
4498 | deal with an unbroken array. */ | |
3c6bc7d0 RS |
4499 | |
4500 | /* Make sure the gap won't interfere, by moving it out of the text | |
4501 | we will operate on. */ | |
4502 | if (start1 < gap && gap < end2) | |
4503 | { | |
4504 | if (gap - start1 < end2 - gap) | |
4505 | move_gap (start1); | |
4506 | else | |
4507 | move_gap (end2); | |
4508 | } | |
ec1c14f6 RS |
4509 | |
4510 | start1_byte = CHAR_TO_BYTE (start1); | |
4511 | start2_byte = CHAR_TO_BYTE (start2); | |
4512 | len1_byte = CHAR_TO_BYTE (end1) - start1_byte; | |
4513 | len2_byte = CHAR_TO_BYTE (end2) - start2_byte; | |
dc3620af | 4514 | |
9a599130 | 4515 | #ifdef BYTE_COMBINING_DEBUG |
dc3620af RS |
4516 | if (end1 == start2) |
4517 | { | |
9a599130 KH |
4518 | if (count_combining_before (BYTE_POS_ADDR (start2_byte), |
4519 | len2_byte, start1, start1_byte) | |
4520 | || count_combining_before (BYTE_POS_ADDR (start1_byte), | |
4521 | len1_byte, end2, start2_byte + len2_byte) | |
4522 | || count_combining_after (BYTE_POS_ADDR (start1_byte), | |
4523 | len1_byte, end2, start2_byte + len2_byte)) | |
4524 | abort (); | |
dc3620af RS |
4525 | } |
4526 | else | |
4527 | { | |
9a599130 KH |
4528 | if (count_combining_before (BYTE_POS_ADDR (start2_byte), |
4529 | len2_byte, start1, start1_byte) | |
4530 | || count_combining_before (BYTE_POS_ADDR (start1_byte), | |
4531 | len1_byte, start2, start2_byte) | |
4532 | || count_combining_after (BYTE_POS_ADDR (start2_byte), | |
4533 | len2_byte, end1, start1_byte + len1_byte) | |
4534 | || count_combining_after (BYTE_POS_ADDR (start1_byte), | |
4535 | len1_byte, end2, start2_byte + len2_byte)) | |
4536 | abort (); | |
dc3620af | 4537 | } |
9a599130 | 4538 | #endif |
dc3620af | 4539 | |
b229b8d1 RS |
4540 | /* Hmmm... how about checking to see if the gap is large |
4541 | enough to use as the temporary storage? That would avoid an | |
4542 | allocation... interesting. Later, don't fool with it now. */ | |
4543 | ||
4544 | /* Working without memmove, for portability (sigh), so must be | |
4545 | careful of overlapping subsections of the array... */ | |
4546 | ||
4547 | if (end1 == start2) /* adjacent regions */ | |
4548 | { | |
3e145152 | 4549 | modify_region (current_buffer, start1, end2, 0); |
b229b8d1 RS |
4550 | record_change (start1, len1 + len2); |
4551 | ||
b229b8d1 RS |
4552 | tmp_interval1 = copy_intervals (cur_intv, start1, len1); |
4553 | tmp_interval2 = copy_intervals (cur_intv, start2, len2); | |
916480c4 CY |
4554 | /* Don't use Fset_text_properties: that can cause GC, which can |
4555 | clobber objects stored in the tmp_intervals. */ | |
6cd0f478 CY |
4556 | tmp_interval3 = validate_interval_range (buf, &startr1, &endr2, 0); |
4557 | if (!NULL_INTERVAL_P (tmp_interval3)) | |
4558 | set_text_properties_1 (startr1, endr2, Qnil, buf, tmp_interval3); | |
b229b8d1 RS |
4559 | |
4560 | /* First region smaller than second. */ | |
ec1c14f6 | 4561 | if (len1_byte < len2_byte) |
b229b8d1 | 4562 | { |
7e2c051b KS |
4563 | USE_SAFE_ALLOCA; |
4564 | ||
4565 | SAFE_ALLOCA (temp, unsigned char *, len2_byte); | |
03240d11 KH |
4566 | |
4567 | /* Don't precompute these addresses. We have to compute them | |
4568 | at the last minute, because the relocating allocator might | |
4569 | have moved the buffer around during the xmalloc. */ | |
23017390 KH |
4570 | start1_addr = BYTE_POS_ADDR (start1_byte); |
4571 | start2_addr = BYTE_POS_ADDR (start2_byte); | |
03240d11 | 4572 | |
72af86bd AS |
4573 | memcpy (temp, start2_addr, len2_byte); |
4574 | memcpy (start1_addr + len2_byte, start1_addr, len1_byte); | |
4575 | memcpy (start1_addr, temp, len2_byte); | |
e65837df | 4576 | SAFE_FREE (); |
b229b8d1 RS |
4577 | } |
4578 | else | |
4579 | /* First region not smaller than second. */ | |
4580 | { | |
7e2c051b KS |
4581 | USE_SAFE_ALLOCA; |
4582 | ||
4583 | SAFE_ALLOCA (temp, unsigned char *, len1_byte); | |
23017390 KH |
4584 | start1_addr = BYTE_POS_ADDR (start1_byte); |
4585 | start2_addr = BYTE_POS_ADDR (start2_byte); | |
72af86bd AS |
4586 | memcpy (temp, start1_addr, len1_byte); |
4587 | memcpy (start1_addr, start2_addr, len2_byte); | |
4588 | memcpy (start1_addr + len2_byte, temp, len1_byte); | |
e65837df | 4589 | SAFE_FREE (); |
b229b8d1 | 4590 | } |
b229b8d1 RS |
4591 | graft_intervals_into_buffer (tmp_interval1, start1 + len2, |
4592 | len1, current_buffer, 0); | |
4593 | graft_intervals_into_buffer (tmp_interval2, start1, | |
4594 | len2, current_buffer, 0); | |
d5c2c403 KH |
4595 | update_compositions (start1, start1 + len2, CHECK_BORDER); |
4596 | update_compositions (start1 + len2, end2, CHECK_TAIL); | |
b229b8d1 RS |
4597 | } |
4598 | /* Non-adjacent regions, because end1 != start2, bleagh... */ | |
4599 | else | |
4600 | { | |
ec1c14f6 RS |
4601 | len_mid = start2_byte - (start1_byte + len1_byte); |
4602 | ||
4603 | if (len1_byte == len2_byte) | |
b229b8d1 RS |
4604 | /* Regions are same size, though, how nice. */ |
4605 | { | |
7e2c051b KS |
4606 | USE_SAFE_ALLOCA; |
4607 | ||
3e145152 CY |
4608 | modify_region (current_buffer, start1, end1, 0); |
4609 | modify_region (current_buffer, start2, end2, 0); | |
b229b8d1 RS |
4610 | record_change (start1, len1); |
4611 | record_change (start2, len2); | |
b229b8d1 RS |
4612 | tmp_interval1 = copy_intervals (cur_intv, start1, len1); |
4613 | tmp_interval2 = copy_intervals (cur_intv, start2, len2); | |
6cd0f478 CY |
4614 | |
4615 | tmp_interval3 = validate_interval_range (buf, &startr1, &endr1, 0); | |
4616 | if (!NULL_INTERVAL_P (tmp_interval3)) | |
4617 | set_text_properties_1 (startr1, endr1, Qnil, buf, tmp_interval3); | |
4618 | ||
4619 | tmp_interval3 = validate_interval_range (buf, &startr2, &endr2, 0); | |
4620 | if (!NULL_INTERVAL_P (tmp_interval3)) | |
4621 | set_text_properties_1 (startr2, endr2, Qnil, buf, tmp_interval3); | |
b229b8d1 | 4622 | |
7e2c051b | 4623 | SAFE_ALLOCA (temp, unsigned char *, len1_byte); |
23017390 KH |
4624 | start1_addr = BYTE_POS_ADDR (start1_byte); |
4625 | start2_addr = BYTE_POS_ADDR (start2_byte); | |
72af86bd AS |
4626 | memcpy (temp, start1_addr, len1_byte); |
4627 | memcpy (start1_addr, start2_addr, len2_byte); | |
4628 | memcpy (start2_addr, temp, len1_byte); | |
e65837df | 4629 | SAFE_FREE (); |
7e2c051b | 4630 | |
b229b8d1 RS |
4631 | graft_intervals_into_buffer (tmp_interval1, start2, |
4632 | len1, current_buffer, 0); | |
4633 | graft_intervals_into_buffer (tmp_interval2, start1, | |
4634 | len2, current_buffer, 0); | |
b229b8d1 RS |
4635 | } |
4636 | ||
ec1c14f6 | 4637 | else if (len1_byte < len2_byte) /* Second region larger than first */ |
b229b8d1 RS |
4638 | /* Non-adjacent & unequal size, area between must also be shifted. */ |
4639 | { | |
7e2c051b KS |
4640 | USE_SAFE_ALLOCA; |
4641 | ||
3e145152 | 4642 | modify_region (current_buffer, start1, end2, 0); |
b229b8d1 | 4643 | record_change (start1, (end2 - start1)); |
b229b8d1 RS |
4644 | tmp_interval1 = copy_intervals (cur_intv, start1, len1); |
4645 | tmp_interval_mid = copy_intervals (cur_intv, end1, len_mid); | |
4646 | tmp_interval2 = copy_intervals (cur_intv, start2, len2); | |
6cd0f478 CY |
4647 | |
4648 | tmp_interval3 = validate_interval_range (buf, &startr1, &endr2, 0); | |
4649 | if (!NULL_INTERVAL_P (tmp_interval3)) | |
4650 | set_text_properties_1 (startr1, endr2, Qnil, buf, tmp_interval3); | |
b229b8d1 | 4651 | |
3c6bc7d0 | 4652 | /* holds region 2 */ |
7e2c051b | 4653 | SAFE_ALLOCA (temp, unsigned char *, len2_byte); |
23017390 KH |
4654 | start1_addr = BYTE_POS_ADDR (start1_byte); |
4655 | start2_addr = BYTE_POS_ADDR (start2_byte); | |
72af86bd AS |
4656 | memcpy (temp, start2_addr, len2_byte); |
4657 | memcpy (start1_addr + len_mid + len2_byte, start1_addr, len1_byte); | |
4658 | memmove (start1_addr + len2_byte, start1_addr + len1_byte, len_mid); | |
4659 | memcpy (start1_addr, temp, len2_byte); | |
e65837df | 4660 | SAFE_FREE (); |
7e2c051b | 4661 | |
b229b8d1 RS |
4662 | graft_intervals_into_buffer (tmp_interval1, end2 - len1, |
4663 | len1, current_buffer, 0); | |
4664 | graft_intervals_into_buffer (tmp_interval_mid, start1 + len2, | |
4665 | len_mid, current_buffer, 0); | |
4666 | graft_intervals_into_buffer (tmp_interval2, start1, | |
4667 | len2, current_buffer, 0); | |
b229b8d1 RS |
4668 | } |
4669 | else | |
4670 | /* Second region smaller than first. */ | |
4671 | { | |
7e2c051b KS |
4672 | USE_SAFE_ALLOCA; |
4673 | ||
b229b8d1 | 4674 | record_change (start1, (end2 - start1)); |
3e145152 | 4675 | modify_region (current_buffer, start1, end2, 0); |
b229b8d1 | 4676 | |
b229b8d1 RS |
4677 | tmp_interval1 = copy_intervals (cur_intv, start1, len1); |
4678 | tmp_interval_mid = copy_intervals (cur_intv, end1, len_mid); | |
4679 | tmp_interval2 = copy_intervals (cur_intv, start2, len2); | |
6cd0f478 CY |
4680 | |
4681 | tmp_interval3 = validate_interval_range (buf, &startr1, &endr2, 0); | |
4682 | if (!NULL_INTERVAL_P (tmp_interval3)) | |
4683 | set_text_properties_1 (startr1, endr2, Qnil, buf, tmp_interval3); | |
b229b8d1 | 4684 | |
3c6bc7d0 | 4685 | /* holds region 1 */ |
7e2c051b | 4686 | SAFE_ALLOCA (temp, unsigned char *, len1_byte); |
23017390 KH |
4687 | start1_addr = BYTE_POS_ADDR (start1_byte); |
4688 | start2_addr = BYTE_POS_ADDR (start2_byte); | |
72af86bd AS |
4689 | memcpy (temp, start1_addr, len1_byte); |
4690 | memcpy (start1_addr, start2_addr, len2_byte); | |
4691 | memcpy (start1_addr + len2_byte, start1_addr + len1_byte, len_mid); | |
4692 | memcpy (start1_addr + len2_byte + len_mid, temp, len1_byte); | |
e65837df | 4693 | SAFE_FREE (); |
7e2c051b | 4694 | |
b229b8d1 RS |
4695 | graft_intervals_into_buffer (tmp_interval1, end2 - len1, |
4696 | len1, current_buffer, 0); | |
4697 | graft_intervals_into_buffer (tmp_interval_mid, start1 + len2, | |
4698 | len_mid, current_buffer, 0); | |
4699 | graft_intervals_into_buffer (tmp_interval2, start1, | |
4700 | len2, current_buffer, 0); | |
b229b8d1 | 4701 | } |
d5c2c403 KH |
4702 | |
4703 | update_compositions (start1, start1 + len2, CHECK_BORDER); | |
4704 | update_compositions (end2 - len1, end2, CHECK_BORDER); | |
b229b8d1 RS |
4705 | } |
4706 | ||
ec1c14f6 RS |
4707 | /* When doing multiple transpositions, it might be nice |
4708 | to optimize this. Perhaps the markers in any one buffer | |
4709 | should be organized in some sorted data tree. */ | |
b229b8d1 | 4710 | if (NILP (leave_markers)) |
8de1d5f0 | 4711 | { |
ec1c14f6 RS |
4712 | transpose_markers (start1, end1, start2, end2, |
4713 | start1_byte, start1_byte + len1_byte, | |
4714 | start2_byte, start2_byte + len2_byte); | |
6b61353c | 4715 | fix_start_end_in_overlays (start1, end2); |
8de1d5f0 | 4716 | } |
b229b8d1 | 4717 | |
c10b2810 | 4718 | signal_after_change (start1, end2 - start1, end2 - start1); |
b229b8d1 RS |
4719 | return Qnil; |
4720 | } | |
35692fe0 | 4721 | |
35692fe0 JB |
4722 | \f |
4723 | void | |
971de7fb | 4724 | syms_of_editfns (void) |
35692fe0 | 4725 | { |
260e2e2a | 4726 | environbuf = 0; |
a03fc5a6 | 4727 | initial_tz = 0; |
260e2e2a | 4728 | |
cd3520a4 | 4729 | DEFSYM (Qbuffer_access_fontify_functions, "buffer-access-fontify-functions"); |
260e2e2a | 4730 | |
29208e82 | 4731 | DEFVAR_LISP ("inhibit-field-text-motion", Vinhibit_field_text_motion, |
7dcece14 | 4732 | doc: /* Non-nil means text motion commands don't notice fields. */); |
9a74e7e5 GM |
4733 | Vinhibit_field_text_motion = Qnil; |
4734 | ||
260e2e2a | 4735 | DEFVAR_LISP ("buffer-access-fontify-functions", |
29208e82 | 4736 | Vbuffer_access_fontify_functions, |
7ee72033 | 4737 | doc: /* List of functions called by `buffer-substring' to fontify if necessary. |
a1f17501 PJ |
4738 | Each function is called with two arguments which specify the range |
4739 | of the buffer being accessed. */); | |
260e2e2a KH |
4740 | Vbuffer_access_fontify_functions = Qnil; |
4741 | ||
af209db8 RS |
4742 | { |
4743 | Lisp_Object obuf; | |
af209db8 RS |
4744 | obuf = Fcurrent_buffer (); |
4745 | /* Do this here, because init_buffer_once is too early--it won't work. */ | |
4746 | Fset_buffer (Vprin1_to_string_buffer); | |
4747 | /* Make sure buffer-access-fontify-functions is nil in this buffer. */ | |
d67b4f80 | 4748 | Fset (Fmake_local_variable (intern_c_string ("buffer-access-fontify-functions")), |
af209db8 RS |
4749 | Qnil); |
4750 | Fset_buffer (obuf); | |
4751 | } | |
4752 | ||
0b6fd023 | 4753 | DEFVAR_LISP ("buffer-access-fontified-property", |
29208e82 | 4754 | Vbuffer_access_fontified_property, |
7ee72033 | 4755 | doc: /* Property which (if non-nil) indicates text has been fontified. |
a1f17501 PJ |
4756 | `buffer-substring' need not call the `buffer-access-fontify-functions' |
4757 | functions if all the text being accessed has this property. */); | |
260e2e2a KH |
4758 | Vbuffer_access_fontified_property = Qnil; |
4759 | ||
29208e82 | 4760 | DEFVAR_LISP ("system-name", Vsystem_name, |
1a7e0117 | 4761 | doc: /* The host name of the machine Emacs is running on. */); |
34a7a267 | 4762 | |
29208e82 | 4763 | DEFVAR_LISP ("user-full-name", Vuser_full_name, |
7ee72033 | 4764 | doc: /* The full name of the user logged in. */); |
f43754f6 | 4765 | |
29208e82 | 4766 | DEFVAR_LISP ("user-login-name", Vuser_login_name, |
7ee72033 | 4767 | doc: /* The user's name, taken from environment variables if possible. */); |
f43754f6 | 4768 | |
29208e82 | 4769 | DEFVAR_LISP ("user-real-login-name", Vuser_real_login_name, |
7ee72033 | 4770 | doc: /* The user's name, based upon the real uid only. */); |
35692fe0 | 4771 | |
29208e82 | 4772 | DEFVAR_LISP ("operating-system-release", Voperating_system_release, |
3bb9abc8 ST |
4773 | doc: /* The release of the operating system Emacs is running on. */); |
4774 | ||
0963334d | 4775 | defsubr (&Spropertize); |
35692fe0 JB |
4776 | defsubr (&Schar_equal); |
4777 | defsubr (&Sgoto_char); | |
4778 | defsubr (&Sstring_to_char); | |
4779 | defsubr (&Schar_to_string); | |
c3bb441d | 4780 | defsubr (&Sbyte_to_string); |
35692fe0 | 4781 | defsubr (&Sbuffer_substring); |
260e2e2a | 4782 | defsubr (&Sbuffer_substring_no_properties); |
35692fe0 JB |
4783 | defsubr (&Sbuffer_string); |
4784 | ||
4785 | defsubr (&Spoint_marker); | |
4786 | defsubr (&Smark_marker); | |
4787 | defsubr (&Spoint); | |
4788 | defsubr (&Sregion_beginning); | |
4789 | defsubr (&Sregion_end); | |
7df74da6 | 4790 | |
cd3520a4 JB |
4791 | DEFSYM (Qfield, "field"); |
4792 | DEFSYM (Qboundary, "boundary"); | |
0daf6e8d GM |
4793 | defsubr (&Sfield_beginning); |
4794 | defsubr (&Sfield_end); | |
4795 | defsubr (&Sfield_string); | |
4796 | defsubr (&Sfield_string_no_properties); | |
8bf64fe8 | 4797 | defsubr (&Sdelete_field); |
0daf6e8d GM |
4798 | defsubr (&Sconstrain_to_field); |
4799 | ||
7df74da6 RS |
4800 | defsubr (&Sline_beginning_position); |
4801 | defsubr (&Sline_end_position); | |
4802 | ||
35692fe0 JB |
4803 | /* defsubr (&Smark); */ |
4804 | /* defsubr (&Sset_mark); */ | |
4805 | defsubr (&Ssave_excursion); | |
4bc8c7d2 | 4806 | defsubr (&Ssave_current_buffer); |
35692fe0 JB |
4807 | |
4808 | defsubr (&Sbufsize); | |
4809 | defsubr (&Spoint_max); | |
4810 | defsubr (&Spoint_min); | |
4811 | defsubr (&Spoint_min_marker); | |
4812 | defsubr (&Spoint_max_marker); | |
c86212b9 RS |
4813 | defsubr (&Sgap_position); |
4814 | defsubr (&Sgap_size); | |
7df74da6 | 4815 | defsubr (&Sposition_bytes); |
3ab0732d | 4816 | defsubr (&Sbyte_to_position); |
c9ed721d | 4817 | |
35692fe0 JB |
4818 | defsubr (&Sbobp); |
4819 | defsubr (&Seobp); | |
4820 | defsubr (&Sbolp); | |
4821 | defsubr (&Seolp); | |
850a8179 JB |
4822 | defsubr (&Sfollowing_char); |
4823 | defsubr (&Sprevious_char); | |
35692fe0 | 4824 | defsubr (&Schar_after); |
fb8106e8 | 4825 | defsubr (&Schar_before); |
35692fe0 JB |
4826 | defsubr (&Sinsert); |
4827 | defsubr (&Sinsert_before_markers); | |
be91036a RS |
4828 | defsubr (&Sinsert_and_inherit); |
4829 | defsubr (&Sinsert_and_inherit_before_markers); | |
35692fe0 | 4830 | defsubr (&Sinsert_char); |
48ef988f | 4831 | defsubr (&Sinsert_byte); |
35692fe0 JB |
4832 | |
4833 | defsubr (&Suser_login_name); | |
4834 | defsubr (&Suser_real_login_name); | |
4835 | defsubr (&Suser_uid); | |
4836 | defsubr (&Suser_real_uid); | |
4837 | defsubr (&Suser_full_name); | |
7fd233b3 | 4838 | defsubr (&Semacs_pid); |
d940e0e4 | 4839 | defsubr (&Scurrent_time); |
4211ee7d | 4840 | defsubr (&Sget_internal_run_time); |
a82d387c | 4841 | defsubr (&Sformat_time_string); |
34a7a267 | 4842 | defsubr (&Sfloat_time); |
4691c06d | 4843 | defsubr (&Sdecode_time); |
cce7b8a0 | 4844 | defsubr (&Sencode_time); |
35692fe0 | 4845 | defsubr (&Scurrent_time_string); |
c2662aea | 4846 | defsubr (&Scurrent_time_zone); |
143cb9a9 | 4847 | defsubr (&Sset_time_zone_rule); |
35692fe0 | 4848 | defsubr (&Ssystem_name); |
35692fe0 | 4849 | defsubr (&Smessage); |
cacc3e2c RS |
4850 | defsubr (&Smessage_box); |
4851 | defsubr (&Smessage_or_box); | |
b14dda8a | 4852 | defsubr (&Scurrent_message); |
35692fe0 | 4853 | defsubr (&Sformat); |
35692fe0 JB |
4854 | |
4855 | defsubr (&Sinsert_buffer_substring); | |
e9cf2084 | 4856 | defsubr (&Scompare_buffer_substrings); |
35692fe0 | 4857 | defsubr (&Ssubst_char_in_region); |
8583605b | 4858 | defsubr (&Stranslate_region_internal); |
35692fe0 | 4859 | defsubr (&Sdelete_region); |
7dae4502 | 4860 | defsubr (&Sdelete_and_extract_region); |
35692fe0 JB |
4861 | defsubr (&Swiden); |
4862 | defsubr (&Snarrow_to_region); | |
4863 | defsubr (&Ssave_restriction); | |
b229b8d1 | 4864 | defsubr (&Stranspose_regions); |
35692fe0 | 4865 | } |