1 /* Lisp functions pertaining to editing.
2 Copyright (C) 1985,86,87,89,93,94,95,96,97,98 Free Software Foundation, Inc.
4 This file is part of GNU Emacs.
6 GNU Emacs is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2, or (at your option)
11 GNU Emacs is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with GNU Emacs; see the file COPYING. If not, write to
18 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA. */
22 #include <sys/types.h>
41 #include "intervals.h"
48 #define min(a, b) ((a) < (b) ? (a) : (b))
49 #define max(a, b) ((a) > (b) ? (a) : (b))
55 extern char **environ
;
56 extern Lisp_Object
make_time ();
57 extern void insert_from_buffer ();
58 static int tm_diff ();
59 static void update_buffer_properties ();
60 size_t emacs_strftime ();
61 void set_time_zone_rule ();
63 Lisp_Object Vbuffer_access_fontify_functions
;
64 Lisp_Object Qbuffer_access_fontify_functions
;
65 Lisp_Object Vbuffer_access_fontified_property
;
67 Lisp_Object
Fuser_full_name ();
69 /* Some static data, and a function to initialize it for each run */
71 Lisp_Object Vsystem_name
;
72 Lisp_Object Vuser_real_login_name
; /* login name of current user ID */
73 Lisp_Object Vuser_full_name
; /* full name of current user */
74 Lisp_Object Vuser_login_name
; /* user name from LOGNAME or USER */
80 register unsigned char *p
, *q
, *r
;
81 struct passwd
*pw
; /* password entry for the current user */
84 /* Set up system_name even when dumping. */
88 /* Don't bother with this on initial start when just dumping out */
91 #endif /* not CANNOT_DUMP */
93 pw
= (struct passwd
*) getpwuid (getuid ());
95 /* We let the real user name default to "root" because that's quite
96 accurate on MSDOG and because it lets Emacs find the init file.
97 (The DVX libraries override the Djgpp libraries here.) */
98 Vuser_real_login_name
= build_string (pw
? pw
->pw_name
: "root");
100 Vuser_real_login_name
= build_string (pw
? pw
->pw_name
: "unknown");
103 /* Get the effective user name, by consulting environment variables,
104 or the effective uid if those are unset. */
105 user_name
= (char *) getenv ("LOGNAME");
108 user_name
= (char *) getenv ("USERNAME"); /* it's USERNAME on NT */
109 #else /* WINDOWSNT */
110 user_name
= (char *) getenv ("USER");
111 #endif /* WINDOWSNT */
114 pw
= (struct passwd
*) getpwuid (geteuid ());
115 user_name
= (char *) (pw
? pw
->pw_name
: "unknown");
117 Vuser_login_name
= build_string (user_name
);
119 /* If the user name claimed in the environment vars differs from
120 the real uid, use the claimed name to find the full name. */
121 tem
= Fstring_equal (Vuser_login_name
, Vuser_real_login_name
);
122 Vuser_full_name
= Fuser_full_name (NILP (tem
)? make_number (geteuid())
125 p
= (unsigned char *) getenv ("NAME");
127 Vuser_full_name
= build_string (p
);
128 else if (NILP (Vuser_full_name
))
129 Vuser_full_name
= build_string ("unknown");
132 DEFUN ("char-to-string", Fchar_to_string
, Schar_to_string
, 1, 1, 0,
133 "Convert arg CHAR to a string containing that character.")
135 Lisp_Object character
;
138 unsigned char workbuf
[4], *str
;
140 CHECK_NUMBER (character
, 0);
142 len
= CHAR_STRING (XFASTINT (character
), workbuf
, str
);
143 return make_string_from_bytes (str
, 1, len
);
146 DEFUN ("string-to-char", Fstring_to_char
, Sstring_to_char
, 1, 1, 0,
147 "Convert arg STRING to a character, the first character of that string.\n\
148 A multibyte character is handled correctly.")
150 register Lisp_Object string
;
152 register Lisp_Object val
;
153 register struct Lisp_String
*p
;
154 CHECK_STRING (string
, 0);
155 p
= XSTRING (string
);
157 XSETFASTINT (val
, STRING_CHAR (p
->data
, STRING_BYTES (p
)));
159 XSETFASTINT (val
, 0);
164 buildmark (charpos
, bytepos
)
165 int charpos
, bytepos
;
167 register Lisp_Object mark
;
168 mark
= Fmake_marker ();
169 set_marker_both (mark
, Qnil
, charpos
, bytepos
);
173 DEFUN ("point", Fpoint
, Spoint
, 0, 0, 0,
174 "Return value of point, as an integer.\n\
175 Beginning of buffer is position (point-min)")
179 XSETFASTINT (temp
, PT
);
183 DEFUN ("point-marker", Fpoint_marker
, Spoint_marker
, 0, 0, 0,
184 "Return value of point, as a marker object.")
187 return buildmark (PT
, PT_BYTE
);
191 clip_to_bounds (lower
, num
, upper
)
192 int lower
, num
, upper
;
196 else if (num
> upper
)
202 DEFUN ("goto-char", Fgoto_char
, Sgoto_char
, 1, 1, "NGoto char: ",
203 "Set point to POSITION, a number or marker.\n\
204 Beginning of buffer is position (point-min), end is (point-max).\n\
205 If the position is in the middle of a multibyte form,\n\
206 the actual point is set at the head of the multibyte form\n\
207 except in the case that `enable-multibyte-characters' is nil.")
209 register Lisp_Object position
;
214 if (MARKERP (position
)
215 && current_buffer
== XMARKER (position
)->buffer
)
217 pos
= marker_position (position
);
219 SET_PT_BOTH (BEGV
, BEGV_BYTE
);
221 SET_PT_BOTH (ZV
, ZV_BYTE
);
223 SET_PT_BOTH (pos
, marker_byte_position (position
));
228 CHECK_NUMBER_COERCE_MARKER (position
, 0);
230 pos
= clip_to_bounds (BEGV
, XINT (position
), ZV
);
236 region_limit (beginningp
)
239 extern Lisp_Object Vmark_even_if_inactive
; /* Defined in callint.c. */
240 register Lisp_Object m
;
241 if (!NILP (Vtransient_mark_mode
) && NILP (Vmark_even_if_inactive
)
242 && NILP (current_buffer
->mark_active
))
243 Fsignal (Qmark_inactive
, Qnil
);
244 m
= Fmarker_position (current_buffer
->mark
);
245 if (NILP (m
)) error ("There is no region now");
246 if ((PT
< XFASTINT (m
)) == beginningp
)
247 return (make_number (PT
));
252 DEFUN ("region-beginning", Fregion_beginning
, Sregion_beginning
, 0, 0, 0,
253 "Return position of beginning of region, as an integer.")
256 return (region_limit (1));
259 DEFUN ("region-end", Fregion_end
, Sregion_end
, 0, 0, 0,
260 "Return position of end of region, as an integer.")
263 return (region_limit (0));
266 DEFUN ("mark-marker", Fmark_marker
, Smark_marker
, 0, 0, 0,
267 "Return this buffer's mark, as a marker object.\n\
268 Watch out! Moving this marker changes the mark position.\n\
269 If you set the marker not to point anywhere, the buffer will have no mark.")
272 return current_buffer
->mark
;
275 DEFUN ("line-beginning-position", Fline_beginning_position
, Sline_beginning_position
,
277 "Return the character position of the first character on the current line.\n\
278 With argument N not nil or 1, move forward N - 1 lines first.\n\
279 If scan reaches end of buffer, return that position.\n\
280 This function does not move point.")
284 register int orig
, orig_byte
, end
;
293 Fforward_line (make_number (XINT (n
) - 1));
295 SET_PT_BOTH (orig
, orig_byte
);
297 return make_number (end
);
300 DEFUN ("line-end-position", Fline_end_position
, Sline_end_position
,
302 "Return the character position of the last character on the current line.\n\
303 With argument N not nil or 1, move forward N - 1 lines first.\n\
304 If scan reaches end of buffer, return that position.\n\
305 This function does not move point.")
314 return make_number (find_before_next_newline
315 (PT
, 0, XINT (n
) - (XINT (n
) <= 0)));
319 save_excursion_save ()
321 register int visible
= (XBUFFER (XWINDOW (selected_window
)->buffer
)
324 return Fcons (Fpoint_marker (),
325 Fcons (Fcopy_marker (current_buffer
->mark
, Qnil
),
326 Fcons (visible
? Qt
: Qnil
,
327 current_buffer
->mark_active
)));
331 save_excursion_restore (info
)
334 Lisp_Object tem
, tem1
, omark
, nmark
;
335 struct gcpro gcpro1
, gcpro2
, gcpro3
;
337 tem
= Fmarker_buffer (Fcar (info
));
338 /* If buffer being returned to is now deleted, avoid error */
339 /* Otherwise could get error here while unwinding to top level
341 /* In that case, Fmarker_buffer returns nil now. */
345 omark
= nmark
= Qnil
;
346 GCPRO3 (info
, omark
, nmark
);
351 unchain_marker (tem
);
352 tem
= Fcar (Fcdr (info
));
353 omark
= Fmarker_position (current_buffer
->mark
);
354 Fset_marker (current_buffer
->mark
, tem
, Fcurrent_buffer ());
355 nmark
= Fmarker_position (tem
);
356 unchain_marker (tem
);
357 tem
= Fcdr (Fcdr (info
));
358 #if 0 /* We used to make the current buffer visible in the selected window
359 if that was true previously. That avoids some anomalies.
360 But it creates others, and it wasn't documented, and it is simpler
361 and cleaner never to alter the window/buffer connections. */
364 && current_buffer
!= XBUFFER (XWINDOW (selected_window
)->buffer
))
365 Fswitch_to_buffer (Fcurrent_buffer (), Qnil
);
368 tem1
= current_buffer
->mark_active
;
369 current_buffer
->mark_active
= Fcdr (tem
);
370 if (!NILP (Vrun_hooks
))
372 /* If mark is active now, and either was not active
373 or was at a different place, run the activate hook. */
374 if (! NILP (current_buffer
->mark_active
))
376 if (! EQ (omark
, nmark
))
377 call1 (Vrun_hooks
, intern ("activate-mark-hook"));
379 /* If mark has ceased to be active, run deactivate hook. */
380 else if (! NILP (tem1
))
381 call1 (Vrun_hooks
, intern ("deactivate-mark-hook"));
387 DEFUN ("save-excursion", Fsave_excursion
, Ssave_excursion
, 0, UNEVALLED
, 0,
388 "Save point, mark, and current buffer; execute BODY; restore those things.\n\
389 Executes BODY just like `progn'.\n\
390 The values of point, mark and the current buffer are restored\n\
391 even in case of abnormal exit (throw or error).\n\
392 The state of activation of the mark is also restored.\n\
394 This construct does not save `deactivate-mark', and therefore\n\
395 functions that change the buffer will still cause deactivation\n\
396 of the mark at the end of the command. To prevent that, bind\n\
397 `deactivate-mark' with `let'.")
401 register Lisp_Object val
;
402 int count
= specpdl_ptr
- specpdl
;
404 record_unwind_protect (save_excursion_restore
, save_excursion_save ());
407 return unbind_to (count
, val
);
410 DEFUN ("save-current-buffer", Fsave_current_buffer
, Ssave_current_buffer
, 0, UNEVALLED
, 0,
411 "Save the current buffer; execute BODY; restore the current buffer.\n\
412 Executes BODY just like `progn'.")
416 register Lisp_Object val
;
417 int count
= specpdl_ptr
- specpdl
;
419 record_unwind_protect (set_buffer_if_live
, Fcurrent_buffer ());
422 return unbind_to (count
, val
);
425 DEFUN ("buffer-size", Fbufsize
, Sbufsize
, 0, 0, 0,
426 "Return the number of characters in the current buffer.")
430 XSETFASTINT (temp
, Z
- BEG
);
434 DEFUN ("point-min", Fpoint_min
, Spoint_min
, 0, 0, 0,
435 "Return the minimum permissible value of point in the current buffer.\n\
436 This is 1, unless narrowing (a buffer restriction) is in effect.")
440 XSETFASTINT (temp
, BEGV
);
444 DEFUN ("point-min-marker", Fpoint_min_marker
, Spoint_min_marker
, 0, 0, 0,
445 "Return a marker to the minimum permissible value of point in this buffer.\n\
446 This is the beginning, unless narrowing (a buffer restriction) is in effect.")
449 return buildmark (BEGV
, BEGV_BYTE
);
452 DEFUN ("point-max", Fpoint_max
, Spoint_max
, 0, 0, 0,
453 "Return the maximum permissible value of point in the current buffer.\n\
454 This is (1+ (buffer-size)), unless narrowing (a buffer restriction)\n\
455 is in effect, in which case it is less.")
459 XSETFASTINT (temp
, ZV
);
463 DEFUN ("point-max-marker", Fpoint_max_marker
, Spoint_max_marker
, 0, 0, 0,
464 "Return a marker to the maximum permissible value of point in this buffer.\n\
465 This is (1+ (buffer-size)), unless narrowing (a buffer restriction)\n\
466 is in effect, in which case it is less.")
469 return buildmark (ZV
, ZV_BYTE
);
472 DEFUN ("gap-position", Fgap_position
, Sgap_position
, 0, 0, 0,
473 "Return the position of the gap, in the current buffer.\n\
474 See also `gap-size'.")
478 XSETFASTINT (temp
, GPT
);
482 DEFUN ("gap-size", Fgap_size
, Sgap_size
, 0, 0, 0,
483 "Return the size of the current buffer's gap.\n\
484 See also `gap-position'.")
488 XSETFASTINT (temp
, GAP_SIZE
);
492 DEFUN ("position-bytes", Fposition_bytes
, Sposition_bytes
, 1, 1, 0,
493 "Return the byte position for character position POSITION.\n\
494 If POSITION is out of range, the value is nil.")
496 Lisp_Object position
;
498 CHECK_NUMBER_COERCE_MARKER (position
, 1);
499 if (XINT (position
) < BEG
|| XINT (position
) > Z
)
501 return make_number (CHAR_TO_BYTE (XINT (position
)));
504 DEFUN ("byte-to-position", Fbyte_to_position
, Sbyte_to_position
, 1, 1, 0,
505 "Return the character position for byte position BYTEPOS.\n\
506 If BYTEPOS is out of range, the value is nil.")
510 CHECK_NUMBER (bytepos
, 1);
511 if (XINT (bytepos
) < BEG_BYTE
|| XINT (bytepos
) > Z_BYTE
)
513 return make_number (BYTE_TO_CHAR (XINT (bytepos
)));
516 DEFUN ("following-char", Ffollowing_char
, Sfollowing_char
, 0, 0, 0,
517 "Return the character following point, as a number.\n\
518 At the end of the buffer or accessible region, return 0.\n\
519 If `enable-multibyte-characters' is nil or point is not\n\
520 at character boundary, multibyte form is ignored,\n\
521 and only one byte following point is returned as a character.")
526 XSETFASTINT (temp
, 0);
528 XSETFASTINT (temp
, FETCH_CHAR (PT_BYTE
));
532 DEFUN ("preceding-char", Fprevious_char
, Sprevious_char
, 0, 0, 0,
533 "Return the character preceding point, as a number.\n\
534 At the beginning of the buffer or accessible region, return 0.\n\
535 If `enable-multibyte-characters' is nil or point is not\n\
536 at character boundary, multi-byte form is ignored,\n\
537 and only one byte preceding point is returned as a character.")
542 XSETFASTINT (temp
, 0);
543 else if (!NILP (current_buffer
->enable_multibyte_characters
))
547 XSETFASTINT (temp
, FETCH_CHAR (pos
));
550 XSETFASTINT (temp
, FETCH_BYTE (PT_BYTE
- 1));
554 DEFUN ("bobp", Fbobp
, Sbobp
, 0, 0, 0,
555 "Return t if point is at the beginning of the buffer.\n\
556 If the buffer is narrowed, this means the beginning of the narrowed part.")
564 DEFUN ("eobp", Feobp
, Seobp
, 0, 0, 0,
565 "Return t if point is at the end of the buffer.\n\
566 If the buffer is narrowed, this means the end of the narrowed part.")
574 DEFUN ("bolp", Fbolp
, Sbolp
, 0, 0, 0,
575 "Return t if point is at the beginning of a line.")
578 if (PT
== BEGV
|| FETCH_BYTE (PT_BYTE
- 1) == '\n')
583 DEFUN ("eolp", Feolp
, Seolp
, 0, 0, 0,
584 "Return t if point is at the end of a line.\n\
585 `End of a line' includes point being at the end of the buffer.")
588 if (PT
== ZV
|| FETCH_BYTE (PT_BYTE
) == '\n')
593 DEFUN ("char-after", Fchar_after
, Schar_after
, 0, 1, 0,
594 "Return character in current buffer at position POS.\n\
595 POS is an integer or a buffer pointer.\n\
596 If POS is out of range, the value is nil.")
600 register int pos_byte
;
601 register Lisp_Object val
;
611 pos_byte
= marker_byte_position (pos
);
612 if (pos_byte
< BEGV_BYTE
|| pos_byte
>= ZV_BYTE
)
617 CHECK_NUMBER_COERCE_MARKER (pos
, 0);
618 if (XINT (pos
) < BEGV
|| XINT (pos
) >= ZV
)
621 pos_byte
= CHAR_TO_BYTE (XINT (pos
));
624 return make_number (FETCH_CHAR (pos_byte
));
627 DEFUN ("char-before", Fchar_before
, Schar_before
, 0, 1, 0,
628 "Return character in current buffer preceding position POS.\n\
629 POS is an integer or a buffer pointer.\n\
630 If POS is out of range, the value is nil.")
634 register Lisp_Object val
;
635 register int pos_byte
;
645 pos_byte
= marker_byte_position (pos
);
647 if (pos_byte
<= BEGV_BYTE
|| pos_byte
> ZV_BYTE
)
652 CHECK_NUMBER_COERCE_MARKER (pos
, 0);
654 if (XINT (pos
) <= BEGV
|| XINT (pos
) > ZV
)
657 pos_byte
= CHAR_TO_BYTE (XINT (pos
));
660 if (!NILP (current_buffer
->enable_multibyte_characters
))
663 XSETFASTINT (val
, FETCH_CHAR (pos_byte
));
668 XSETFASTINT (val
, FETCH_BYTE (pos_byte
));
673 DEFUN ("user-login-name", Fuser_login_name
, Suser_login_name
, 0, 1, 0,
674 "Return the name under which the user logged in, as a string.\n\
675 This is based on the effective uid, not the real uid.\n\
676 Also, if the environment variable LOGNAME or USER is set,\n\
677 that determines the value of this function.\n\n\
678 If optional argument UID is an integer, return the login name of the user\n\
679 with that uid, or nil if there is no such user.")
685 /* Set up the user name info if we didn't do it before.
686 (That can happen if Emacs is dumpable
687 but you decide to run `temacs -l loadup' and not dump. */
688 if (INTEGERP (Vuser_login_name
))
692 return Vuser_login_name
;
694 CHECK_NUMBER (uid
, 0);
695 pw
= (struct passwd
*) getpwuid (XINT (uid
));
696 return (pw
? build_string (pw
->pw_name
) : Qnil
);
699 DEFUN ("user-real-login-name", Fuser_real_login_name
, Suser_real_login_name
,
701 "Return the name of the user's real uid, as a string.\n\
702 This ignores the environment variables LOGNAME and USER, so it differs from\n\
703 `user-login-name' when running under `su'.")
706 /* Set up the user name info if we didn't do it before.
707 (That can happen if Emacs is dumpable
708 but you decide to run `temacs -l loadup' and not dump. */
709 if (INTEGERP (Vuser_login_name
))
711 return Vuser_real_login_name
;
714 DEFUN ("user-uid", Fuser_uid
, Suser_uid
, 0, 0, 0,
715 "Return the effective uid of Emacs, as an integer.")
718 return make_number (geteuid ());
721 DEFUN ("user-real-uid", Fuser_real_uid
, Suser_real_uid
, 0, 0, 0,
722 "Return the real uid of Emacs, as an integer.")
725 return make_number (getuid ());
728 DEFUN ("user-full-name", Fuser_full_name
, Suser_full_name
, 0, 1, 0,
729 "Return the full name of the user logged in, as a string.\n\
730 If optional argument UID is an integer, return the full name of the user\n\
731 with that uid, or \"unknown\" if there is no such user.\n\
732 If UID is a string, return the full name of the user with that login\n\
733 name, or \"unknown\" if no such user could be found.")
738 register unsigned char *p
, *q
;
739 extern char *index ();
743 return Vuser_full_name
;
744 else if (NUMBERP (uid
))
745 pw
= (struct passwd
*) getpwuid (XINT (uid
));
746 else if (STRINGP (uid
))
747 pw
= (struct passwd
*) getpwnam (XSTRING (uid
)->data
);
749 error ("Invalid UID specification");
754 p
= (unsigned char *) USER_FULL_NAME
;
755 /* Chop off everything after the first comma. */
756 q
= (unsigned char *) index (p
, ',');
757 full
= make_string (p
, q
? q
- p
: strlen (p
));
759 #ifdef AMPERSAND_FULL_NAME
760 p
= XSTRING (full
)->data
;
761 q
= (unsigned char *) index (p
, '&');
762 /* Substitute the login name for the &, upcasing the first character. */
765 register unsigned char *r
;
768 login
= Fuser_login_name (make_number (pw
->pw_uid
));
769 r
= (unsigned char *) alloca (strlen (p
) + XSTRING (login
)->size
+ 1);
772 strcat (r
, XSTRING (login
)->data
);
773 r
[q
- p
] = UPCASE (r
[q
- p
]);
775 full
= build_string (r
);
777 #endif /* AMPERSAND_FULL_NAME */
782 DEFUN ("system-name", Fsystem_name
, Ssystem_name
, 0, 0, 0,
783 "Return the name of the machine you are running on, as a string.")
789 /* For the benefit of callers who don't want to include lisp.h */
793 if (STRINGP (Vsystem_name
))
794 return (char *) XSTRING (Vsystem_name
)->data
;
799 DEFUN ("emacs-pid", Femacs_pid
, Semacs_pid
, 0, 0, 0,
800 "Return the process ID of Emacs, as an integer.")
803 return make_number (getpid ());
806 DEFUN ("current-time", Fcurrent_time
, Scurrent_time
, 0, 0, 0,
807 "Return the current time, as the number of seconds since 1970-01-01 00:00:00.\n\
808 The time is returned as a list of three integers. The first has the\n\
809 most significant 16 bits of the seconds, while the second has the\n\
810 least significant 16 bits. The third integer gives the microsecond\n\
813 The microsecond count is zero on systems that do not provide\n\
814 resolution finer than a second.")
818 Lisp_Object result
[3];
821 XSETINT (result
[0], (EMACS_SECS (t
) >> 16) & 0xffff);
822 XSETINT (result
[1], (EMACS_SECS (t
) >> 0) & 0xffff);
823 XSETINT (result
[2], EMACS_USECS (t
));
825 return Flist (3, result
);
830 lisp_time_argument (specified_time
, result
)
831 Lisp_Object specified_time
;
834 if (NILP (specified_time
))
835 return time (result
) != -1;
838 Lisp_Object high
, low
;
839 high
= Fcar (specified_time
);
840 CHECK_NUMBER (high
, 0);
841 low
= Fcdr (specified_time
);
844 CHECK_NUMBER (low
, 0);
845 *result
= (XINT (high
) << 16) + (XINT (low
) & 0xffff);
846 return *result
>> 16 == XINT (high
);
850 /* Write information into buffer S of size MAXSIZE, according to the
851 FORMAT of length FORMAT_LEN, using time information taken from *TP.
852 Return the number of bytes written, not including the terminating
853 '\0'. If S is NULL, nothing will be written anywhere; so to
854 determine how many bytes would be written, use NULL for S and
855 ((size_t) -1) for MAXSIZE.
857 This function behaves like emacs_strftime, except it allows null
860 emacs_memftime (s
, maxsize
, format
, format_len
, tp
)
869 /* Loop through all the null-terminated strings in the format
870 argument. Normally there's just one null-terminated string, but
871 there can be arbitrarily many, concatenated together, if the
872 format contains '\0' bytes. emacs_strftime stops at the first
873 '\0' byte so we must invoke it separately for each such string. */
882 result
= emacs_strftime (s
, maxsize
, format
, tp
);
886 if (result
== 0 && s
[0] != '\0')
891 maxsize
-= result
+ 1;
893 len
= strlen (format
);
894 if (len
== format_len
)
898 format_len
-= len
+ 1;
903 DEFUN ("format-time-string", Fformat_time_string, Sformat_time_string, 1, 3, 0,
904 "Use FORMAT-STRING to format the time TIME, or now if omitted.\n\
905 TIME is specified as (HIGH LOW . IGNORED) or (HIGH . LOW), as returned by\n\
906 `current-time' or `file-attributes'.\n\
907 The third, optional, argument UNIVERSAL, if non-nil, means describe TIME\n\
908 as Universal Time; nil means describe TIME in the local time zone.\n\
909 The value is a copy of FORMAT-STRING, but with certain constructs replaced\n\
910 by text that describes the specified date and time in TIME:\n\
912 %Y is the year, %y within the century, %C the century.\n\
913 %G is the year corresponding to the ISO week, %g within the century.\n\
914 %m is the numeric month.\n\
915 %b and %h are the locale's abbreviated month name, %B the full name.\n\
916 %d is the day of the month, zero-padded, %e is blank-padded.\n\
917 %u is the numeric day of week from 1 (Monday) to 7, %w from 0 (Sunday) to 6.\n\
918 %a is the locale's abbreviated name of the day of week, %A the full name.\n\
919 %U is the week number starting on Sunday, %W starting on Monday,\n\
920 %V according to ISO 8601.\n\
921 %j is the day of the year.\n\
923 %H is the hour on a 24-hour clock, %I is on a 12-hour clock, %k is like %H\n\
924 only blank-padded, %l is like %I blank-padded.\n\
925 %p is the locale's equivalent of either AM or PM.\n\
928 %Z is the time zone name, %z is the numeric form.\n\
929 %s is the number of seconds since 1970-01-01 00:00:00 +0000.\n\
931 %c is the locale's date and time format.\n\
932 %x is the locale's \"preferred\" date format.\n\
933 %D is like \"%m/%d/%y\".\n\
935 %R is like \"%H:%M\", %T is like \"%H:%M:%S\", %r is like \"%I:%M:%S %p\".\n\
936 %X is the locale's \"preferred\" time format.\n\
938 Finally, %n is a newline, %t is a tab, %% is a literal %.\n\
940 Certain flags and modifiers are available with some format controls.\n\
941 The flags are `_' and `-'. For certain characters X, %_X is like %X,\n\
942 but padded with blanks; %-X is like %X, but without padding.\n\
943 %NX (where N stands for an integer) is like %X,\n\
944 but takes up at least N (a number) positions.\n\
945 The modifiers are `E' and `O'. For certain characters X,\n\
946 %EX is a locale's alternative version of %X;\n\
947 %OX is like %X, but uses the locale's number symbols.\n\
949 For example, to produce full ISO 8601 format, use \"%Y-%m-%dT%T%z\".")
950 (format_string, time, universal)
953 DEFUN ("format-time-string", Fformat_time_string
, Sformat_time_string
, 1, 3, 0,
954 0 /* See immediately above */)
955 (format_string
, time
, universal
)
956 Lisp_Object format_string
, time
, universal
;
962 CHECK_STRING (format_string
, 1);
964 if (! lisp_time_argument (time
, &value
))
965 error ("Invalid time specification");
967 /* This is probably enough. */
968 size
= STRING_BYTES (XSTRING (format_string
)) * 6 + 50;
970 tm
= NILP (universal
) ? localtime (&value
) : gmtime (&value
);
972 error ("Specified time is not representable");
976 char *buf
= (char *) alloca (size
+ 1);
980 result
= emacs_memftime (buf
, size
, XSTRING (format_string
)->data
,
981 STRING_BYTES (XSTRING (format_string
)),
983 if ((result
> 0 && result
< size
) || (result
== 0 && buf
[0] == '\0'))
984 return make_string (buf
, result
);
986 /* If buffer was too small, make it bigger and try again. */
987 result
= emacs_memftime (NULL
, (size_t) -1,
988 XSTRING (format_string
)->data
,
989 STRING_BYTES (XSTRING (format_string
)),
995 DEFUN ("decode-time", Fdecode_time
, Sdecode_time
, 0, 1, 0,
996 "Decode a time value as (SEC MINUTE HOUR DAY MONTH YEAR DOW DST ZONE).\n\
997 The optional SPECIFIED-TIME should be a list of (HIGH LOW . IGNORED)\n\
998 or (HIGH . LOW), as from `current-time' and `file-attributes', or `nil'\n\
999 to use the current time. The list has the following nine members:\n\
1000 SEC is an integer between 0 and 60; SEC is 60 for a leap second, which\n\
1001 only some operating systems support. MINUTE is an integer between 0 and 59.\n\
1002 HOUR is an integer between 0 and 23. DAY is an integer between 1 and 31.\n\
1003 MONTH is an integer between 1 and 12. YEAR is an integer indicating the\n\
1004 four-digit year. DOW is the day of week, an integer between 0 and 6, where\n\
1005 0 is Sunday. DST is t if daylight savings time is effect, otherwise nil.\n\
1006 ZONE is an integer indicating the number of seconds east of Greenwich.\n\
1007 \(Note that Common Lisp has different meanings for DOW and ZONE.)")
1009 Lisp_Object specified_time
;
1013 struct tm
*decoded_time
;
1014 Lisp_Object list_args
[9];
1016 if (! lisp_time_argument (specified_time
, &time_spec
))
1017 error ("Invalid time specification");
1019 decoded_time
= localtime (&time_spec
);
1021 error ("Specified time is not representable");
1022 XSETFASTINT (list_args
[0], decoded_time
->tm_sec
);
1023 XSETFASTINT (list_args
[1], decoded_time
->tm_min
);
1024 XSETFASTINT (list_args
[2], decoded_time
->tm_hour
);
1025 XSETFASTINT (list_args
[3], decoded_time
->tm_mday
);
1026 XSETFASTINT (list_args
[4], decoded_time
->tm_mon
+ 1);
1027 XSETINT (list_args
[5], decoded_time
->tm_year
+ 1900);
1028 XSETFASTINT (list_args
[6], decoded_time
->tm_wday
);
1029 list_args
[7] = (decoded_time
->tm_isdst
)? Qt
: Qnil
;
1031 /* Make a copy, in case gmtime modifies the struct. */
1032 save_tm
= *decoded_time
;
1033 decoded_time
= gmtime (&time_spec
);
1034 if (decoded_time
== 0)
1035 list_args
[8] = Qnil
;
1037 XSETINT (list_args
[8], tm_diff (&save_tm
, decoded_time
));
1038 return Flist (9, list_args
);
1041 DEFUN ("encode-time", Fencode_time
, Sencode_time
, 6, MANY
, 0,
1042 "Convert SECOND, MINUTE, HOUR, DAY, MONTH, YEAR and ZONE to internal time.\n\
1043 This is the reverse operation of `decode-time', which see.\n\
1044 ZONE defaults to the current time zone rule. This can\n\
1045 be a string or t (as from `set-time-zone-rule'), or it can be a list\n\
1046 \(as from `current-time-zone') or an integer (as from `decode-time')\n\
1047 applied without consideration for daylight savings time.\n\
1049 You can pass more than 7 arguments; then the first six arguments\n\
1050 are used as SECOND through YEAR, and the *last* argument is used as ZONE.\n\
1051 The intervening arguments are ignored.\n\
1052 This feature lets (apply 'encode-time (decode-time ...)) work.\n\
1054 Out-of-range values for SEC, MINUTE, HOUR, DAY, or MONTH are allowed;\n\
1055 for example, a DAY of 0 means the day preceding the given month.\n\
1056 Year numbers less than 100 are treated just like other year numbers.\n\
1057 If you want them to stand for years in this century, you must do that yourself.")
1060 register Lisp_Object
*args
;
1064 Lisp_Object zone
= (nargs
> 6 ? args
[nargs
- 1] : Qnil
);
1066 CHECK_NUMBER (args
[0], 0); /* second */
1067 CHECK_NUMBER (args
[1], 1); /* minute */
1068 CHECK_NUMBER (args
[2], 2); /* hour */
1069 CHECK_NUMBER (args
[3], 3); /* day */
1070 CHECK_NUMBER (args
[4], 4); /* month */
1071 CHECK_NUMBER (args
[5], 5); /* year */
1073 tm
.tm_sec
= XINT (args
[0]);
1074 tm
.tm_min
= XINT (args
[1]);
1075 tm
.tm_hour
= XINT (args
[2]);
1076 tm
.tm_mday
= XINT (args
[3]);
1077 tm
.tm_mon
= XINT (args
[4]) - 1;
1078 tm
.tm_year
= XINT (args
[5]) - 1900;
1084 time
= mktime (&tm
);
1089 char **oldenv
= environ
, **newenv
;
1093 else if (STRINGP (zone
))
1094 tzstring
= (char *) XSTRING (zone
)->data
;
1095 else if (INTEGERP (zone
))
1097 int abszone
= abs (XINT (zone
));
1098 sprintf (tzbuf
, "XXX%s%d:%02d:%02d", "-" + (XINT (zone
) < 0),
1099 abszone
/ (60*60), (abszone
/60) % 60, abszone
% 60);
1103 error ("Invalid time zone specification");
1105 /* Set TZ before calling mktime; merely adjusting mktime's returned
1106 value doesn't suffice, since that would mishandle leap seconds. */
1107 set_time_zone_rule (tzstring
);
1109 time
= mktime (&tm
);
1111 /* Restore TZ to previous value. */
1115 #ifdef LOCALTIME_CACHE
1120 if (time
== (time_t) -1)
1121 error ("Specified time is not representable");
1123 return make_time (time
);
1126 DEFUN ("current-time-string", Fcurrent_time_string
, Scurrent_time_string
, 0, 1, 0,
1127 "Return the current time, as a human-readable string.\n\
1128 Programs can use this function to decode a time,\n\
1129 since the number of columns in each field is fixed.\n\
1130 The format is `Sun Sep 16 01:03:52 1973'.\n\
1131 However, see also the functions `decode-time' and `format-time-string'\n\
1132 which provide a much more powerful and general facility.\n\
1134 If an argument is given, it specifies a time to format\n\
1135 instead of the current time. The argument should have the form:\n\
1138 (HIGH LOW . IGNORED).\n\
1139 Thus, you can use times obtained from `current-time'\n\
1140 and from `file-attributes'.")
1142 Lisp_Object specified_time
;
1148 if (! lisp_time_argument (specified_time
, &value
))
1150 tem
= (char *) ctime (&value
);
1152 strncpy (buf
, tem
, 24);
1155 return build_string (buf
);
1158 #define TM_YEAR_BASE 1900
1160 /* Yield A - B, measured in seconds.
1161 This function is copied from the GNU C Library. */
1166 /* Compute intervening leap days correctly even if year is negative.
1167 Take care to avoid int overflow in leap day calculations,
1168 but it's OK to assume that A and B are close to each other. */
1169 int a4
= (a
->tm_year
>> 2) + (TM_YEAR_BASE
>> 2) - ! (a
->tm_year
& 3);
1170 int b4
= (b
->tm_year
>> 2) + (TM_YEAR_BASE
>> 2) - ! (b
->tm_year
& 3);
1171 int a100
= a4
/ 25 - (a4
% 25 < 0);
1172 int b100
= b4
/ 25 - (b4
% 25 < 0);
1173 int a400
= a100
>> 2;
1174 int b400
= b100
>> 2;
1175 int intervening_leap_days
= (a4
- b4
) - (a100
- b100
) + (a400
- b400
);
1176 int years
= a
->tm_year
- b
->tm_year
;
1177 int days
= (365 * years
+ intervening_leap_days
1178 + (a
->tm_yday
- b
->tm_yday
));
1179 return (60 * (60 * (24 * days
+ (a
->tm_hour
- b
->tm_hour
))
1180 + (a
->tm_min
- b
->tm_min
))
1181 + (a
->tm_sec
- b
->tm_sec
));
1184 DEFUN ("current-time-zone", Fcurrent_time_zone
, Scurrent_time_zone
, 0, 1, 0,
1185 "Return the offset and name for the local time zone.\n\
1186 This returns a list of the form (OFFSET NAME).\n\
1187 OFFSET is an integer number of seconds ahead of UTC (east of Greenwich).\n\
1188 A negative value means west of Greenwich.\n\
1189 NAME is a string giving the name of the time zone.\n\
1190 If an argument is given, it specifies when the time zone offset is determined\n\
1191 instead of using the current time. The argument should have the form:\n\
1194 (HIGH LOW . IGNORED).\n\
1195 Thus, you can use times obtained from `current-time'\n\
1196 and from `file-attributes'.\n\
1198 Some operating systems cannot provide all this information to Emacs;\n\
1199 in this case, `current-time-zone' returns a list containing nil for\n\
1200 the data it can't find.")
1202 Lisp_Object specified_time
;
1208 if (lisp_time_argument (specified_time
, &value
)
1209 && (t
= gmtime (&value
)) != 0
1210 && (gmt
= *t
, t
= localtime (&value
)) != 0)
1212 int offset
= tm_diff (t
, &gmt
);
1217 s
= (char *)t
->tm_zone
;
1218 #else /* not HAVE_TM_ZONE */
1220 if (t
->tm_isdst
== 0 || t
->tm_isdst
== 1)
1221 s
= tzname
[t
->tm_isdst
];
1223 #endif /* not HAVE_TM_ZONE */
1226 /* No local time zone name is available; use "+-NNNN" instead. */
1227 int am
= (offset
< 0 ? -offset
: offset
) / 60;
1228 sprintf (buf
, "%c%02d%02d", (offset
< 0 ? '-' : '+'), am
/60, am
%60);
1231 return Fcons (make_number (offset
), Fcons (build_string (s
), Qnil
));
1234 return Fmake_list (make_number (2), Qnil
);
1237 /* This holds the value of `environ' produced by the previous
1238 call to Fset_time_zone_rule, or 0 if Fset_time_zone_rule
1239 has never been called. */
1240 static char **environbuf
;
1242 DEFUN ("set-time-zone-rule", Fset_time_zone_rule
, Sset_time_zone_rule
, 1, 1, 0,
1243 "Set the local time zone using TZ, a string specifying a time zone rule.\n\
1244 If TZ is nil, use implementation-defined default time zone information.\n\
1245 If TZ is t, use Universal Time.")
1253 else if (EQ (tz
, Qt
))
1257 CHECK_STRING (tz
, 0);
1258 tzstring
= (char *) XSTRING (tz
)->data
;
1261 set_time_zone_rule (tzstring
);
1264 environbuf
= environ
;
1269 #ifdef LOCALTIME_CACHE
1271 /* These two values are known to load tz files in buggy implementations,
1272 i.e. Solaris 1 executables running under either Solaris 1 or Solaris 2.
1273 Their values shouldn't matter in non-buggy implementations.
1274 We don't use string literals for these strings,
1275 since if a string in the environment is in readonly
1276 storage, it runs afoul of bugs in SVR4 and Solaris 2.3.
1277 See Sun bugs 1113095 and 1114114, ``Timezone routines
1278 improperly modify environment''. */
1280 static char set_time_zone_rule_tz1
[] = "TZ=GMT+0";
1281 static char set_time_zone_rule_tz2
[] = "TZ=GMT+1";
1285 /* Set the local time zone rule to TZSTRING.
1286 This allocates memory into `environ', which it is the caller's
1287 responsibility to free. */
1289 set_time_zone_rule (tzstring
)
1293 char **from
, **to
, **newenv
;
1295 /* Make the ENVIRON vector longer with room for TZSTRING. */
1296 for (from
= environ
; *from
; from
++)
1298 envptrs
= from
- environ
+ 2;
1299 newenv
= to
= (char **) xmalloc (envptrs
* sizeof (char *)
1300 + (tzstring
? strlen (tzstring
) + 4 : 0));
1302 /* Add TZSTRING to the end of environ, as a value for TZ. */
1305 char *t
= (char *) (to
+ envptrs
);
1307 strcat (t
, tzstring
);
1311 /* Copy the old environ vector elements into NEWENV,
1312 but don't copy the TZ variable.
1313 So we have only one definition of TZ, which came from TZSTRING. */
1314 for (from
= environ
; *from
; from
++)
1315 if (strncmp (*from
, "TZ=", 3) != 0)
1321 /* If we do have a TZSTRING, NEWENV points to the vector slot where
1322 the TZ variable is stored. If we do not have a TZSTRING,
1323 TO points to the vector slot which has the terminating null. */
1325 #ifdef LOCALTIME_CACHE
1327 /* In SunOS 4.1.3_U1 and 4.1.4, if TZ has a value like
1328 "US/Pacific" that loads a tz file, then changes to a value like
1329 "XXX0" that does not load a tz file, and then changes back to
1330 its original value, the last change is (incorrectly) ignored.
1331 Also, if TZ changes twice in succession to values that do
1332 not load a tz file, tzset can dump core (see Sun bug#1225179).
1333 The following code works around these bugs. */
1337 /* Temporarily set TZ to a value that loads a tz file
1338 and that differs from tzstring. */
1340 *newenv
= (strcmp (tzstring
, set_time_zone_rule_tz1
+ 3) == 0
1341 ? set_time_zone_rule_tz2
: set_time_zone_rule_tz1
);
1347 /* The implied tzstring is unknown, so temporarily set TZ to
1348 two different values that each load a tz file. */
1349 *to
= set_time_zone_rule_tz1
;
1352 *to
= set_time_zone_rule_tz2
;
1357 /* Now TZ has the desired value, and tzset can be invoked safely. */
1364 /* Insert NARGS Lisp objects in the array ARGS by calling INSERT_FUNC
1365 (if a type of object is Lisp_Int) or INSERT_FROM_STRING_FUNC (if a
1366 type of object is Lisp_String). INHERIT is passed to
1367 INSERT_FROM_STRING_FUNC as the last argument. */
1370 general_insert_function (insert_func
, insert_from_string_func
,
1371 inherit
, nargs
, args
)
1372 void (*insert_func
) P_ ((unsigned char *, int));
1373 void (*insert_from_string_func
) P_ ((Lisp_Object
, int, int, int, int, int));
1375 register Lisp_Object
*args
;
1377 register int argnum
;
1378 register Lisp_Object val
;
1380 for (argnum
= 0; argnum
< nargs
; argnum
++)
1386 unsigned char workbuf
[4], *str
;
1389 if (!NILP (current_buffer
->enable_multibyte_characters
))
1390 len
= CHAR_STRING (XFASTINT (val
), workbuf
, str
);
1393 workbuf
[0] = (SINGLE_BYTE_CHAR_P (XINT (val
))
1395 : multibyte_char_to_unibyte (XINT (val
), Qnil
));
1399 (*insert_func
) (str
, len
);
1401 else if (STRINGP (val
))
1403 (*insert_from_string_func
) (val
, 0, 0,
1404 XSTRING (val
)->size
,
1405 STRING_BYTES (XSTRING (val
)),
1410 val
= wrong_type_argument (Qchar_or_string_p
, val
);
1424 /* Callers passing one argument to Finsert need not gcpro the
1425 argument "array", since the only element of the array will
1426 not be used after calling insert or insert_from_string, so
1427 we don't care if it gets trashed. */
1429 DEFUN ("insert", Finsert
, Sinsert
, 0, MANY
, 0,
1430 "Insert the arguments, either strings or characters, at point.\n\
1431 Point and before-insertion markers move forward to end up\n\
1432 after the inserted text.\n\
1433 Any other markers at the point of insertion remain before the text.\n\
1435 If the current buffer is multibyte, unibyte strings are converted\n\
1436 to multibyte for insertion (see `unibyte-char-to-multibyte').\n\
1437 If the current buffer is unibyte, multibyte strings are converted\n\
1438 to unibyte for insertion.")
1441 register Lisp_Object
*args
;
1443 general_insert_function (insert
, insert_from_string
, 0, nargs
, args
);
1447 DEFUN ("insert-and-inherit", Finsert_and_inherit
, Sinsert_and_inherit
,
1449 "Insert the arguments at point, inheriting properties from adjoining text.\n\
1450 Point and before-insertion markers move forward to end up\n\
1451 after the inserted text.\n\
1452 Any other markers at the point of insertion remain before the text.\n\
1454 If the current buffer is multibyte, unibyte strings are converted\n\
1455 to multibyte for insertion (see `unibyte-char-to-multibyte').\n\
1456 If the current buffer is unibyte, multibyte strings are converted\n\
1457 to unibyte for insertion.")
1460 register Lisp_Object
*args
;
1462 general_insert_function (insert_and_inherit
, insert_from_string
, 1,
1467 DEFUN ("insert-before-markers", Finsert_before_markers
, Sinsert_before_markers
, 0, MANY
, 0,
1468 "Insert strings or characters at point, relocating markers after the text.\n\
1469 Point and markers move forward to end up after the inserted text.\n\
1471 If the current buffer is multibyte, unibyte strings are converted\n\
1472 to multibyte for insertion (see `unibyte-char-to-multibyte').\n\
1473 If the current buffer is unibyte, multibyte strings are converted\n\
1474 to unibyte for insertion.")
1477 register Lisp_Object
*args
;
1479 general_insert_function (insert_before_markers
,
1480 insert_from_string_before_markers
, 0,
1485 DEFUN ("insert-before-markers-and-inherit", Finsert_and_inherit_before_markers
,
1486 Sinsert_and_inherit_before_markers
, 0, MANY
, 0,
1487 "Insert text at point, relocating markers and inheriting properties.\n\
1488 Point and markers move forward to end up after the inserted text.\n\
1490 If the current buffer is multibyte, unibyte strings are converted\n\
1491 to multibyte for insertion (see `unibyte-char-to-multibyte').\n\
1492 If the current buffer is unibyte, multibyte strings are converted\n\
1493 to unibyte for insertion.")
1496 register Lisp_Object
*args
;
1498 general_insert_function (insert_before_markers_and_inherit
,
1499 insert_from_string_before_markers
, 1,
1504 DEFUN ("insert-char", Finsert_char
, Sinsert_char
, 2, 3, 0,
1505 "Insert COUNT (second arg) copies of CHARACTER (first arg).\n\
1506 Both arguments are required.\n\
1507 Point, and before-insertion markers, are relocated as in the function `insert'.\n\
1508 The optional third arg INHERIT, if non-nil, says to inherit text properties\n\
1509 from adjoining text, if those properties are sticky.")
1510 (character
, count
, inherit
)
1511 Lisp_Object character
, count
, inherit
;
1513 register unsigned char *string
;
1514 register int strlen
;
1517 unsigned char workbuf
[4], *str
;
1519 CHECK_NUMBER (character
, 0);
1520 CHECK_NUMBER (count
, 1);
1522 if (!NILP (current_buffer
->enable_multibyte_characters
))
1523 len
= CHAR_STRING (XFASTINT (character
), workbuf
, str
);
1525 workbuf
[0] = XFASTINT (character
), str
= workbuf
, len
= 1;
1526 n
= XINT (count
) * len
;
1529 strlen
= min (n
, 256 * len
);
1530 string
= (unsigned char *) alloca (strlen
);
1531 for (i
= 0; i
< strlen
; i
++)
1532 string
[i
] = str
[i
% len
];
1536 if (!NILP (inherit
))
1537 insert_and_inherit (string
, strlen
);
1539 insert (string
, strlen
);
1544 if (!NILP (inherit
))
1545 insert_and_inherit (string
, n
);
1553 /* Making strings from buffer contents. */
1555 /* Return a Lisp_String containing the text of the current buffer from
1556 START to END. If text properties are in use and the current buffer
1557 has properties in the range specified, the resulting string will also
1558 have them, if PROPS is nonzero.
1560 We don't want to use plain old make_string here, because it calls
1561 make_uninit_string, which can cause the buffer arena to be
1562 compacted. make_string has no way of knowing that the data has
1563 been moved, and thus copies the wrong data into the string. This
1564 doesn't effect most of the other users of make_string, so it should
1565 be left as is. But we should use this function when conjuring
1566 buffer substrings. */
1569 make_buffer_string (start
, end
, props
)
1573 int start_byte
= CHAR_TO_BYTE (start
);
1574 int end_byte
= CHAR_TO_BYTE (end
);
1576 return make_buffer_string_both (start
, start_byte
, end
, end_byte
, props
);
1579 /* Return a Lisp_String containing the text of the current buffer from
1580 START / START_BYTE to END / END_BYTE.
1582 If text properties are in use and the current buffer
1583 has properties in the range specified, the resulting string will also
1584 have them, if PROPS is nonzero.
1586 We don't want to use plain old make_string here, because it calls
1587 make_uninit_string, which can cause the buffer arena to be
1588 compacted. make_string has no way of knowing that the data has
1589 been moved, and thus copies the wrong data into the string. This
1590 doesn't effect most of the other users of make_string, so it should
1591 be left as is. But we should use this function when conjuring
1592 buffer substrings. */
1595 make_buffer_string_both (start
, start_byte
, end
, end_byte
, props
)
1596 int start
, start_byte
, end
, end_byte
;
1599 Lisp_Object result
, tem
, tem1
;
1601 if (start
< GPT
&& GPT
< end
)
1604 if (! NILP (current_buffer
->enable_multibyte_characters
))
1605 result
= make_uninit_multibyte_string (end
- start
, end_byte
- start_byte
);
1607 result
= make_uninit_string (end
- start
);
1608 bcopy (BYTE_POS_ADDR (start_byte
), XSTRING (result
)->data
,
1609 end_byte
- start_byte
);
1611 /* If desired, update and copy the text properties. */
1612 #ifdef USE_TEXT_PROPERTIES
1615 update_buffer_properties (start
, end
);
1617 tem
= Fnext_property_change (make_number (start
), Qnil
, make_number (end
));
1618 tem1
= Ftext_properties_at (make_number (start
), Qnil
);
1620 if (XINT (tem
) != end
|| !NILP (tem1
))
1621 copy_intervals_to_string (result
, current_buffer
, start
,
1629 /* Call Vbuffer_access_fontify_functions for the range START ... END
1630 in the current buffer, if necessary. */
1633 update_buffer_properties (start
, end
)
1636 #ifdef USE_TEXT_PROPERTIES
1637 /* If this buffer has some access functions,
1638 call them, specifying the range of the buffer being accessed. */
1639 if (!NILP (Vbuffer_access_fontify_functions
))
1641 Lisp_Object args
[3];
1644 args
[0] = Qbuffer_access_fontify_functions
;
1645 XSETINT (args
[1], start
);
1646 XSETINT (args
[2], end
);
1648 /* But don't call them if we can tell that the work
1649 has already been done. */
1650 if (!NILP (Vbuffer_access_fontified_property
))
1652 tem
= Ftext_property_any (args
[1], args
[2],
1653 Vbuffer_access_fontified_property
,
1656 Frun_hook_with_args (3, args
);
1659 Frun_hook_with_args (3, args
);
1664 DEFUN ("buffer-substring", Fbuffer_substring
, Sbuffer_substring
, 2, 2, 0,
1665 "Return the contents of part of the current buffer as a string.\n\
1666 The two arguments START and END are character positions;\n\
1667 they can be in either order.\n\
1668 The string returned is multibyte if the buffer is multibyte.")
1670 Lisp_Object start
, end
;
1674 validate_region (&start
, &end
);
1678 return make_buffer_string (b
, e
, 1);
1681 DEFUN ("buffer-substring-no-properties", Fbuffer_substring_no_properties
,
1682 Sbuffer_substring_no_properties
, 2, 2, 0,
1683 "Return the characters of part of the buffer, without the text properties.\n\
1684 The two arguments START and END are character positions;\n\
1685 they can be in either order.")
1687 Lisp_Object start
, end
;
1691 validate_region (&start
, &end
);
1695 return make_buffer_string (b
, e
, 0);
1698 DEFUN ("buffer-string", Fbuffer_string
, Sbuffer_string
, 0, 0, 0,
1699 "Return the contents of the current buffer as a string.\n\
1700 If narrowing is in effect, this function returns only the visible part\n\
1704 return make_buffer_string (BEGV
, ZV
, 1);
1707 DEFUN ("insert-buffer-substring", Finsert_buffer_substring
, Sinsert_buffer_substring
,
1709 "Insert before point a substring of the contents of buffer BUFFER.\n\
1710 BUFFER may be a buffer or a buffer name.\n\
1711 Arguments START and END are character numbers specifying the substring.\n\
1712 They default to the beginning and the end of BUFFER.")
1714 Lisp_Object buf
, start
, end
;
1716 register int b
, e
, temp
;
1717 register struct buffer
*bp
, *obuf
;
1720 buffer
= Fget_buffer (buf
);
1723 bp
= XBUFFER (buffer
);
1724 if (NILP (bp
->name
))
1725 error ("Selecting deleted buffer");
1731 CHECK_NUMBER_COERCE_MARKER (start
, 0);
1738 CHECK_NUMBER_COERCE_MARKER (end
, 1);
1743 temp
= b
, b
= e
, e
= temp
;
1745 if (!(BUF_BEGV (bp
) <= b
&& e
<= BUF_ZV (bp
)))
1746 args_out_of_range (start
, end
);
1748 obuf
= current_buffer
;
1749 set_buffer_internal_1 (bp
);
1750 update_buffer_properties (b
, e
);
1751 set_buffer_internal_1 (obuf
);
1753 insert_from_buffer (bp
, b
, e
- b
, 0);
1757 DEFUN ("compare-buffer-substrings", Fcompare_buffer_substrings
, Scompare_buffer_substrings
,
1759 "Compare two substrings of two buffers; return result as number.\n\
1760 the value is -N if first string is less after N-1 chars,\n\
1761 +N if first string is greater after N-1 chars, or 0 if strings match.\n\
1762 Each substring is represented as three arguments: BUFFER, START and END.\n\
1763 That makes six args in all, three for each substring.\n\n\
1764 The value of `case-fold-search' in the current buffer\n\
1765 determines whether case is significant or ignored.")
1766 (buffer1
, start1
, end1
, buffer2
, start2
, end2
)
1767 Lisp_Object buffer1
, start1
, end1
, buffer2
, start2
, end2
;
1769 register int begp1
, endp1
, begp2
, endp2
, temp
;
1770 register struct buffer
*bp1
, *bp2
;
1771 register Lisp_Object
*trt
1772 = (!NILP (current_buffer
->case_fold_search
)
1773 ? XCHAR_TABLE (current_buffer
->case_canon_table
)->contents
: 0);
1775 int i1
, i2
, i1_byte
, i2_byte
;
1777 /* Find the first buffer and its substring. */
1780 bp1
= current_buffer
;
1784 buf1
= Fget_buffer (buffer1
);
1787 bp1
= XBUFFER (buf1
);
1788 if (NILP (bp1
->name
))
1789 error ("Selecting deleted buffer");
1793 begp1
= BUF_BEGV (bp1
);
1796 CHECK_NUMBER_COERCE_MARKER (start1
, 1);
1797 begp1
= XINT (start1
);
1800 endp1
= BUF_ZV (bp1
);
1803 CHECK_NUMBER_COERCE_MARKER (end1
, 2);
1804 endp1
= XINT (end1
);
1808 temp
= begp1
, begp1
= endp1
, endp1
= temp
;
1810 if (!(BUF_BEGV (bp1
) <= begp1
1812 && endp1
<= BUF_ZV (bp1
)))
1813 args_out_of_range (start1
, end1
);
1815 /* Likewise for second substring. */
1818 bp2
= current_buffer
;
1822 buf2
= Fget_buffer (buffer2
);
1825 bp2
= XBUFFER (buf2
);
1826 if (NILP (bp2
->name
))
1827 error ("Selecting deleted buffer");
1831 begp2
= BUF_BEGV (bp2
);
1834 CHECK_NUMBER_COERCE_MARKER (start2
, 4);
1835 begp2
= XINT (start2
);
1838 endp2
= BUF_ZV (bp2
);
1841 CHECK_NUMBER_COERCE_MARKER (end2
, 5);
1842 endp2
= XINT (end2
);
1846 temp
= begp2
, begp2
= endp2
, endp2
= temp
;
1848 if (!(BUF_BEGV (bp2
) <= begp2
1850 && endp2
<= BUF_ZV (bp2
)))
1851 args_out_of_range (start2
, end2
);
1855 i1_byte
= buf_charpos_to_bytepos (bp1
, i1
);
1856 i2_byte
= buf_charpos_to_bytepos (bp2
, i2
);
1858 while (i1
< endp1
&& i2
< endp2
)
1860 /* When we find a mismatch, we must compare the
1861 characters, not just the bytes. */
1864 if (! NILP (bp1
->enable_multibyte_characters
))
1866 c1
= BUF_FETCH_MULTIBYTE_CHAR (bp1
, i1_byte
);
1867 BUF_INC_POS (bp1
, i1_byte
);
1872 c1
= BUF_FETCH_BYTE (bp1
, i1
);
1873 c1
= unibyte_char_to_multibyte (c1
);
1877 if (! NILP (bp2
->enable_multibyte_characters
))
1879 c2
= BUF_FETCH_MULTIBYTE_CHAR (bp2
, i2_byte
);
1880 BUF_INC_POS (bp2
, i2_byte
);
1885 c2
= BUF_FETCH_BYTE (bp2
, i2
);
1886 c2
= unibyte_char_to_multibyte (c2
);
1892 c1
= XINT (trt
[c1
]);
1893 c2
= XINT (trt
[c2
]);
1896 return make_number (- 1 - chars
);
1898 return make_number (chars
+ 1);
1903 /* The strings match as far as they go.
1904 If one is shorter, that one is less. */
1905 if (chars
< endp1
- begp1
)
1906 return make_number (chars
+ 1);
1907 else if (chars
< endp2
- begp2
)
1908 return make_number (- chars
- 1);
1910 /* Same length too => they are equal. */
1911 return make_number (0);
1915 subst_char_in_region_unwind (arg
)
1918 return current_buffer
->undo_list
= arg
;
1922 subst_char_in_region_unwind_1 (arg
)
1925 return current_buffer
->filename
= arg
;
1928 DEFUN ("subst-char-in-region", Fsubst_char_in_region
,
1929 Ssubst_char_in_region
, 4, 5, 0,
1930 "From START to END, replace FROMCHAR with TOCHAR each time it occurs.\n\
1931 If optional arg NOUNDO is non-nil, don't record this change for undo\n\
1932 and don't mark the buffer as really changed.\n\
1933 Both characters must have the same length of multi-byte form.")
1934 (start
, end
, fromchar
, tochar
, noundo
)
1935 Lisp_Object start
, end
, fromchar
, tochar
, noundo
;
1937 register int pos
, pos_byte
, stop
, i
, len
, end_byte
;
1939 unsigned char fromwork
[4], *fromstr
, towork
[4], *tostr
, *p
;
1940 int count
= specpdl_ptr
- specpdl
;
1942 validate_region (&start
, &end
);
1943 CHECK_NUMBER (fromchar
, 2);
1944 CHECK_NUMBER (tochar
, 3);
1946 if (! NILP (current_buffer
->enable_multibyte_characters
))
1948 len
= CHAR_STRING (XFASTINT (fromchar
), fromwork
, fromstr
);
1949 if (CHAR_STRING (XFASTINT (tochar
), towork
, tostr
) != len
)
1950 error ("Characters in subst-char-in-region have different byte-lengths");
1955 fromwork
[0] = XFASTINT (fromchar
), fromstr
= fromwork
;
1956 towork
[0] = XFASTINT (tochar
), tostr
= towork
;
1960 pos_byte
= CHAR_TO_BYTE (pos
);
1961 stop
= CHAR_TO_BYTE (XINT (end
));
1964 /* If we don't want undo, turn off putting stuff on the list.
1965 That's faster than getting rid of things,
1966 and it prevents even the entry for a first change.
1967 Also inhibit locking the file. */
1970 record_unwind_protect (subst_char_in_region_unwind
,
1971 current_buffer
->undo_list
);
1972 current_buffer
->undo_list
= Qt
;
1973 /* Don't do file-locking. */
1974 record_unwind_protect (subst_char_in_region_unwind_1
,
1975 current_buffer
->filename
);
1976 current_buffer
->filename
= Qnil
;
1979 if (pos_byte
< GPT_BYTE
)
1980 stop
= min (stop
, GPT_BYTE
);
1983 if (pos_byte
>= stop
)
1985 if (pos_byte
>= end_byte
) break;
1988 p
= BYTE_POS_ADDR (pos_byte
);
1989 if (p
[0] == fromstr
[0]
1991 || (p
[1] == fromstr
[1]
1992 && (len
== 2 || (p
[2] == fromstr
[2]
1993 && (len
== 3 || p
[3] == fromstr
[3]))))))
1997 modify_region (current_buffer
, XINT (start
), XINT (end
));
1999 if (! NILP (noundo
))
2001 if (MODIFF
- 1 == SAVE_MODIFF
)
2003 if (MODIFF
- 1 == current_buffer
->auto_save_modified
)
2004 current_buffer
->auto_save_modified
++;
2010 /* Take care of the case where the new character
2011 combines with neighboring bytes. */
2013 && ((! CHAR_HEAD_P (tostr
[0])
2014 && pos_byte
> BEGV_BYTE
2015 && ! ASCII_BYTE_P (FETCH_BYTE (pos_byte
- 1)))
2017 (! ASCII_BYTE_P (tostr
[0])
2018 && pos_byte
+ 1 < ZV_BYTE
2019 && ! CHAR_HEAD_P (FETCH_BYTE (pos_byte
+ 1)))))
2021 Lisp_Object tem
, string
;
2023 struct gcpro gcpro1
;
2025 tem
= current_buffer
->undo_list
;
2028 /* Make a multibyte string containing this
2029 single-byte character. */
2030 string
= Fmake_string (make_number (1),
2031 make_number (tochar
));
2032 SET_STRING_BYTES (XSTRING (string
), 1);
2033 /* replace_range is less efficient, because it moves the gap,
2034 but it handles combining correctly. */
2035 replace_range (pos
, pos
+ 1, string
,
2037 if (! NILP (noundo
))
2038 current_buffer
->undo_list
= tem
;
2045 record_change (pos
, 1);
2046 for (i
= 0; i
< len
; i
++) *p
++ = tostr
[i
];
2049 INC_BOTH (pos
, pos_byte
);
2053 signal_after_change (XINT (start
),
2054 XINT (end
) - XINT (start
), XINT (end
) - XINT (start
));
2056 unbind_to (count
, Qnil
);
2060 DEFUN ("translate-region", Ftranslate_region
, Stranslate_region
, 3, 3, 0,
2061 "From START to END, translate characters according to TABLE.\n\
2062 TABLE is a string; the Nth character in it is the mapping\n\
2063 for the character with code N.\n\
2064 This function does not alter multibyte characters.\n\
2065 It returns the number of characters changed.")
2069 register Lisp_Object table
;
2071 register int pos_byte
, stop
; /* Limits of the region. */
2072 register unsigned char *tt
; /* Trans table. */
2073 register int nc
; /* New character. */
2074 int cnt
; /* Number of changes made. */
2075 int size
; /* Size of translate table. */
2078 validate_region (&start
, &end
);
2079 CHECK_STRING (table
, 2);
2081 size
= STRING_BYTES (XSTRING (table
));
2082 tt
= XSTRING (table
)->data
;
2084 pos_byte
= CHAR_TO_BYTE (XINT (start
));
2085 stop
= CHAR_TO_BYTE (XINT (end
));
2086 modify_region (current_buffer
, XINT (start
), XINT (end
));
2090 for (; pos_byte
< stop
; )
2092 register unsigned char *p
= BYTE_POS_ADDR (pos_byte
);
2096 oc
= STRING_CHAR_AND_LENGTH (p
, stop
- pos_byte
, len
);
2097 if (oc
< size
&& len
== 1)
2102 /* Take care of the case where the new character
2103 combines with neighboring bytes. */
2104 if ((! CHAR_HEAD_P (nc
)
2105 && pos_byte
> BEGV_BYTE
2106 && ! ASCII_BYTE_P (FETCH_BYTE (pos_byte
- 1)))
2108 (! ASCII_BYTE_P (nc
)
2109 && pos_byte
+ 1 < ZV_BYTE
2110 && ! CHAR_HEAD_P (FETCH_BYTE (pos_byte
+ 1))))
2114 string
= Fmake_string (make_number (1),
2116 SET_STRING_BYTES (XSTRING (string
), 1);
2118 /* This is less efficient, because it moves the gap,
2119 but it handles combining correctly. */
2120 replace_range (pos
, pos
+ 1, string
,
2125 record_change (pos
, 1);
2127 signal_after_change (pos
, 1, 1);
2136 return make_number (cnt
);
2139 DEFUN ("delete-region", Fdelete_region
, Sdelete_region
, 2, 2, "r",
2140 "Delete the text between point and mark.\n\
2141 When called from a program, expects two arguments,\n\
2142 positions (integers or markers) specifying the stretch to be deleted.")
2144 Lisp_Object start
, end
;
2146 validate_region (&start
, &end
);
2147 del_range (XINT (start
), XINT (end
));
2151 DEFUN ("widen", Fwiden
, Swiden
, 0, 0, "",
2152 "Remove restrictions (narrowing) from current buffer.\n\
2153 This allows the buffer's full text to be seen and edited.")
2156 if (BEG
!= BEGV
|| Z
!= ZV
)
2157 current_buffer
->clip_changed
= 1;
2159 BEGV_BYTE
= BEG_BYTE
;
2160 SET_BUF_ZV_BOTH (current_buffer
, Z
, Z_BYTE
);
2161 /* Changing the buffer bounds invalidates any recorded current column. */
2162 invalidate_current_column ();
2166 DEFUN ("narrow-to-region", Fnarrow_to_region
, Snarrow_to_region
, 2, 2, "r",
2167 "Restrict editing in this buffer to the current region.\n\
2168 The rest of the text becomes temporarily invisible and untouchable\n\
2169 but is not deleted; if you save the buffer in a file, the invisible\n\
2170 text is included in the file. \\[widen] makes all visible again.\n\
2171 See also `save-restriction'.\n\
2173 When calling from a program, pass two arguments; positions (integers\n\
2174 or markers) bounding the text that should remain visible.")
2176 register Lisp_Object start
, end
;
2178 CHECK_NUMBER_COERCE_MARKER (start
, 0);
2179 CHECK_NUMBER_COERCE_MARKER (end
, 1);
2181 if (XINT (start
) > XINT (end
))
2184 tem
= start
; start
= end
; end
= tem
;
2187 if (!(BEG
<= XINT (start
) && XINT (start
) <= XINT (end
) && XINT (end
) <= Z
))
2188 args_out_of_range (start
, end
);
2190 if (BEGV
!= XFASTINT (start
) || ZV
!= XFASTINT (end
))
2191 current_buffer
->clip_changed
= 1;
2193 SET_BUF_BEGV (current_buffer
, XFASTINT (start
));
2194 SET_BUF_ZV (current_buffer
, XFASTINT (end
));
2195 if (PT
< XFASTINT (start
))
2196 SET_PT (XFASTINT (start
));
2197 if (PT
> XFASTINT (end
))
2198 SET_PT (XFASTINT (end
));
2199 /* Changing the buffer bounds invalidates any recorded current column. */
2200 invalidate_current_column ();
2205 save_restriction_save ()
2207 register Lisp_Object bottom
, top
;
2208 /* Note: I tried using markers here, but it does not win
2209 because insertion at the end of the saved region
2210 does not advance mh and is considered "outside" the saved region. */
2211 XSETFASTINT (bottom
, BEGV
- BEG
);
2212 XSETFASTINT (top
, Z
- ZV
);
2214 return Fcons (Fcurrent_buffer (), Fcons (bottom
, top
));
2218 save_restriction_restore (data
)
2221 register struct buffer
*buf
;
2222 register int newhead
, newtail
;
2223 register Lisp_Object tem
;
2226 buf
= XBUFFER (XCONS (data
)->car
);
2228 data
= XCONS (data
)->cdr
;
2230 tem
= XCONS (data
)->car
;
2231 newhead
= XINT (tem
);
2232 tem
= XCONS (data
)->cdr
;
2233 newtail
= XINT (tem
);
2234 if (newhead
+ newtail
> BUF_Z (buf
) - BUF_BEG (buf
))
2240 obegv
= BUF_BEGV (buf
);
2243 SET_BUF_BEGV (buf
, BUF_BEG (buf
) + newhead
);
2244 SET_BUF_ZV (buf
, BUF_Z (buf
) - newtail
);
2246 if (obegv
!= BUF_BEGV (buf
) || ozv
!= BUF_ZV (buf
))
2247 current_buffer
->clip_changed
= 1;
2249 /* If point is outside the new visible range, move it inside. */
2250 SET_BUF_PT_BOTH (buf
,
2251 clip_to_bounds (BUF_BEGV (buf
), BUF_PT (buf
), BUF_ZV (buf
)),
2252 clip_to_bounds (BUF_BEGV_BYTE (buf
), BUF_PT_BYTE (buf
),
2253 BUF_ZV_BYTE (buf
)));
2258 DEFUN ("save-restriction", Fsave_restriction
, Ssave_restriction
, 0, UNEVALLED
, 0,
2259 "Execute BODY, saving and restoring current buffer's restrictions.\n\
2260 The buffer's restrictions make parts of the beginning and end invisible.\n\
2261 \(They are set up with `narrow-to-region' and eliminated with `widen'.)\n\
2262 This special form, `save-restriction', saves the current buffer's restrictions\n\
2263 when it is entered, and restores them when it is exited.\n\
2264 So any `narrow-to-region' within BODY lasts only until the end of the form.\n\
2265 The old restrictions settings are restored\n\
2266 even in case of abnormal exit (throw or error).\n\
2268 The value returned is the value of the last form in BODY.\n\
2270 `save-restriction' can get confused if, within the BODY, you widen\n\
2271 and then make changes outside the area within the saved restrictions.\n\
2272 See Info node `(elisp)Narrowing' for details and an appropriate technique.\n\
2274 Note: if you are using both `save-excursion' and `save-restriction',\n\
2275 use `save-excursion' outermost:\n\
2276 (save-excursion (save-restriction ...))")
2280 register Lisp_Object val
;
2281 int count
= specpdl_ptr
- specpdl
;
2283 record_unwind_protect (save_restriction_restore
, save_restriction_save ());
2284 val
= Fprogn (body
);
2285 return unbind_to (count
, val
);
2288 /* Buffer for the most recent text displayed by Fmessage. */
2289 static char *message_text
;
2291 /* Allocated length of that buffer. */
2292 static int message_length
;
2294 DEFUN ("message", Fmessage
, Smessage
, 1, MANY
, 0,
2295 "Print a one-line message at the bottom of the screen.\n\
2296 The first argument is a format control string, and the rest are data\n\
2297 to be formatted under control of the string. See `format' for details.\n\
2299 If the first argument is nil, clear any existing message; let the\n\
2300 minibuffer contents show.")
2312 register Lisp_Object val
;
2313 val
= Fformat (nargs
, args
);
2314 /* Copy the data so that it won't move when we GC. */
2317 message_text
= (char *)xmalloc (80);
2318 message_length
= 80;
2320 if (STRING_BYTES (XSTRING (val
)) > message_length
)
2322 message_length
= STRING_BYTES (XSTRING (val
));
2323 message_text
= (char *)xrealloc (message_text
, message_length
);
2325 bcopy (XSTRING (val
)->data
, message_text
, STRING_BYTES (XSTRING (val
)));
2326 message2 (message_text
, STRING_BYTES (XSTRING (val
)),
2327 STRING_MULTIBYTE (val
));
2332 DEFUN ("message-box", Fmessage_box
, Smessage_box
, 1, MANY
, 0,
2333 "Display a message, in a dialog box if possible.\n\
2334 If a dialog box is not available, use the echo area.\n\
2335 The first argument is a format control string, and the rest are data\n\
2336 to be formatted under control of the string. See `format' for details.\n\
2338 If the first argument is nil, clear any existing message; let the\n\
2339 minibuffer contents show.")
2351 register Lisp_Object val
;
2352 val
= Fformat (nargs
, args
);
2355 Lisp_Object pane
, menu
, obj
;
2356 struct gcpro gcpro1
;
2357 pane
= Fcons (Fcons (build_string ("OK"), Qt
), Qnil
);
2359 menu
= Fcons (val
, pane
);
2360 obj
= Fx_popup_dialog (Qt
, menu
);
2364 #else /* not HAVE_MENUS */
2365 /* Copy the data so that it won't move when we GC. */
2368 message_text
= (char *)xmalloc (80);
2369 message_length
= 80;
2371 if (STRING_BYTES (XSTRING (val
)) > message_length
)
2373 message_length
= STRING_BYTES (XSTRING (val
));
2374 message_text
= (char *)xrealloc (message_text
, message_length
);
2376 bcopy (XSTRING (val
)->data
, message_text
, STRING_BYTES (XSTRING (val
)));
2377 message2 (message_text
, STRING_BYTES (XSTRING (val
)),
2378 STRING_MULTIBYTE (val
));
2380 #endif /* not HAVE_MENUS */
2384 extern Lisp_Object last_nonmenu_event
;
2387 DEFUN ("message-or-box", Fmessage_or_box
, Smessage_or_box
, 1, MANY
, 0,
2388 "Display a message in a dialog box or in the echo area.\n\
2389 If this command was invoked with the mouse, use a dialog box.\n\
2390 Otherwise, use the echo area.\n\
2391 The first argument is a format control string, and the rest are data\n\
2392 to be formatted under control of the string. See `format' for details.\n\
2394 If the first argument is nil, clear any existing message; let the\n\
2395 minibuffer contents show.")
2401 if (NILP (last_nonmenu_event
) || CONSP (last_nonmenu_event
))
2402 return Fmessage_box (nargs
, args
);
2404 return Fmessage (nargs
, args
);
2407 DEFUN ("current-message", Fcurrent_message
, Scurrent_message
, 0, 0, 0,
2408 "Return the string currently displayed in the echo area, or nil if none.")
2411 return (echo_area_glyphs
2412 ? make_string (echo_area_glyphs
, echo_area_glyphs_length
)
2416 /* Number of bytes that STRING will occupy when put into the result.
2417 MULTIBYTE is nonzero if the result should be multibyte. */
2419 #define CONVERTED_BYTE_SIZE(MULTIBYTE, STRING) \
2420 (((MULTIBYTE) && ! STRING_MULTIBYTE (STRING)) \
2421 ? count_size_as_multibyte (XSTRING (STRING)->data, \
2422 STRING_BYTES (XSTRING (STRING))) \
2423 : STRING_BYTES (XSTRING (STRING)))
2425 DEFUN ("format", Fformat
, Sformat
, 1, MANY
, 0,
2426 "Format a string out of a control-string and arguments.\n\
2427 The first argument is a control string.\n\
2428 The other arguments are substituted into it to make the result, a string.\n\
2429 It may contain %-sequences meaning to substitute the next argument.\n\
2430 %s means print a string argument. Actually, prints any object, with `princ'.\n\
2431 %d means print as number in decimal (%o octal, %x hex).\n\
2432 %e means print a number in exponential notation.\n\
2433 %f means print a number in decimal-point notation.\n\
2434 %g means print a number in exponential notation\n\
2435 or decimal-point notation, whichever uses fewer characters.\n\
2436 %c means print a number as a single character.\n\
2437 %S means print any object as an s-expression (using prin1).\n\
2438 The argument used for %d, %o, %x, %e, %f, %g or %c must be a number.\n\
2439 Use %% to put a single % into the output.")
2442 register Lisp_Object
*args
;
2444 register int n
; /* The number of the next arg to substitute */
2445 register int total
; /* An estimate of the final length */
2447 register unsigned char *format
, *end
;
2449 /* Nonzero if the output should be a multibyte string,
2450 which is true if any of the inputs is one. */
2452 /* When we make a multibyte string, we must pay attention to the
2453 byte combining problem, i.e., a byte may be combined with a
2454 multibyte charcter of the previous string. This flag tells if we
2455 must consider such a situation or not. */
2456 int maybe_combine_byte
;
2457 unsigned char *this_format
;
2461 extern char *index ();
2463 /* It should not be necessary to GCPRO ARGS, because
2464 the caller in the interpreter should take care of that. */
2466 /* Try to determine whether the result should be multibyte.
2467 This is not always right; sometimes the result needs to be multibyte
2468 because of an object that we will pass through prin1,
2469 and in that case, we won't know it here. */
2470 for (n
= 0; n
< nargs
; n
++)
2471 if (STRINGP (args
[n
]) && STRING_MULTIBYTE (args
[n
]))
2474 CHECK_STRING (args
[0], 0);
2476 /* If we start out planning a unibyte result,
2477 and later find it has to be multibyte, we jump back to retry. */
2480 format
= XSTRING (args
[0])->data
;
2481 end
= format
+ STRING_BYTES (XSTRING (args
[0]));
2484 /* Make room in result for all the non-%-codes in the control string. */
2485 total
= 5 + CONVERTED_BYTE_SIZE (multibyte
, args
[0]);
2487 /* Add to TOTAL enough space to hold the converted arguments. */
2490 while (format
!= end
)
2491 if (*format
++ == '%')
2493 int minlen
, thissize
= 0;
2494 unsigned char *this_format_start
= format
- 1;
2496 /* Process a numeric arg and skip it. */
2497 minlen
= atoi (format
);
2501 while ((*format
>= '0' && *format
<= '9')
2502 || *format
== '-' || *format
== ' ' || *format
== '.')
2505 if (format
- this_format_start
+ 1 > longest_format
)
2506 longest_format
= format
- this_format_start
+ 1;
2509 error ("Format string ends in middle of format specifier");
2512 else if (++n
>= nargs
)
2513 error ("Not enough arguments for format string");
2514 else if (*format
== 'S')
2516 /* For `S', prin1 the argument and then treat like a string. */
2517 register Lisp_Object tem
;
2518 tem
= Fprin1_to_string (args
[n
], Qnil
);
2519 if (STRING_MULTIBYTE (tem
) && ! multibyte
)
2527 else if (SYMBOLP (args
[n
]))
2529 XSETSTRING (args
[n
], XSYMBOL (args
[n
])->name
);
2530 if (STRING_MULTIBYTE (args
[n
]) && ! multibyte
)
2537 else if (STRINGP (args
[n
]))
2540 if (*format
!= 's' && *format
!= 'S')
2541 error ("Format specifier doesn't match argument type");
2542 thissize
= CONVERTED_BYTE_SIZE (multibyte
, args
[n
]);
2544 /* Would get MPV otherwise, since Lisp_Int's `point' to low memory. */
2545 else if (INTEGERP (args
[n
]) && *format
!= 's')
2547 #ifdef LISP_FLOAT_TYPE
2548 /* The following loop assumes the Lisp type indicates
2549 the proper way to pass the argument.
2550 So make sure we have a flonum if the argument should
2552 if (*format
== 'e' || *format
== 'f' || *format
== 'g')
2553 args
[n
] = Ffloat (args
[n
]);
2557 && (! SINGLE_BYTE_CHAR_P (XINT (args
[n
]))
2558 || XINT (args
[n
]) == 0))
2565 args
[n
] = Fchar_to_string (args
[n
]);
2566 thissize
= STRING_BYTES (XSTRING (args
[n
]));
2569 #ifdef LISP_FLOAT_TYPE
2570 else if (FLOATP (args
[n
]) && *format
!= 's')
2572 if (! (*format
== 'e' || *format
== 'f' || *format
== 'g'))
2573 args
[n
] = Ftruncate (args
[n
], Qnil
);
2579 /* Anything but a string, convert to a string using princ. */
2580 register Lisp_Object tem
;
2581 tem
= Fprin1_to_string (args
[n
], Qt
);
2582 if (STRING_MULTIBYTE (tem
) & ! multibyte
)
2591 if (thissize
< minlen
)
2594 total
+= thissize
+ 4;
2597 /* Now we can no longer jump to retry.
2598 TOTAL and LONGEST_FORMAT are known for certain. */
2600 this_format
= (unsigned char *) alloca (longest_format
+ 1);
2602 /* Allocate the space for the result.
2603 Note that TOTAL is an overestimate. */
2605 buf
= (char *) alloca (total
+ 1);
2607 buf
= (char *) xmalloc (total
+ 1);
2613 /* Scan the format and store result in BUF. */
2614 format
= XSTRING (args
[0])->data
;
2615 maybe_combine_byte
= 0;
2616 while (format
!= end
)
2622 unsigned char *this_format_start
= format
;
2626 /* Process a numeric arg and skip it. */
2627 minlen
= atoi (format
);
2629 minlen
= - minlen
, negative
= 1;
2631 while ((*format
>= '0' && *format
<= '9')
2632 || *format
== '-' || *format
== ' ' || *format
== '.')
2635 if (*format
++ == '%')
2644 if (STRINGP (args
[n
]))
2646 int padding
, nbytes
;
2647 int width
= strwidth (XSTRING (args
[n
])->data
,
2648 STRING_BYTES (XSTRING (args
[n
])));
2650 /* If spec requires it, pad on right with spaces. */
2651 padding
= minlen
- width
;
2653 while (padding
-- > 0)
2661 && !ASCII_BYTE_P (*((unsigned char *) p
- 1))
2662 && STRING_MULTIBYTE (args
[n
])
2663 && !CHAR_HEAD_P (XSTRING (args
[n
])->data
[0]))
2664 maybe_combine_byte
= 1;
2665 nbytes
= copy_text (XSTRING (args
[n
])->data
, p
,
2666 STRING_BYTES (XSTRING (args
[n
])),
2667 STRING_MULTIBYTE (args
[n
]), multibyte
);
2669 nchars
+= XSTRING (args
[n
])->size
;
2672 while (padding
-- > 0)
2678 else if (INTEGERP (args
[n
]) || FLOATP (args
[n
]))
2682 bcopy (this_format_start
, this_format
,
2683 format
- this_format_start
);
2684 this_format
[format
- this_format_start
] = 0;
2686 if (INTEGERP (args
[n
]))
2687 sprintf (p
, this_format
, XINT (args
[n
]));
2689 sprintf (p
, this_format
, XFLOAT (args
[n
])->data
);
2693 && !ASCII_BYTE_P (*((unsigned char *) p
- 1))
2694 && !CHAR_HEAD_P (*((unsigned char *) p
)))
2695 maybe_combine_byte
= 1;
2696 this_nchars
= strlen (p
);
2698 nchars
+= this_nchars
;
2701 else if (STRING_MULTIBYTE (args
[0]))
2703 /* Copy a whole multibyte character. */
2706 && !ASCII_BYTE_P (*((unsigned char *) p
- 1))
2707 && !CHAR_HEAD_P (*format
))
2708 maybe_combine_byte
= 1;
2710 while (! CHAR_HEAD_P (*format
)) *p
++ = *format
++;
2715 /* Convert a single-byte character to multibyte. */
2716 int len
= copy_text (format
, p
, 1, 0, 1);
2723 *p
++ = *format
++, nchars
++;
2726 if (maybe_combine_byte
)
2727 nchars
= multibyte_chars_in_text (buf
, p
- buf
);
2728 val
= make_specified_string (buf
, nchars
, p
- buf
, multibyte
);
2730 /* If we allocated BUF with malloc, free it too. */
2740 format1 (string1
, arg0
, arg1
, arg2
, arg3
, arg4
)
2741 EMACS_INT arg0
, arg1
, arg2
, arg3
, arg4
;
2755 doprnt (buf
, sizeof buf
, string1
, (char *)0, 5, (char **) args
);
2757 doprnt (buf
, sizeof buf
, string1
, (char *)0, 5, &string1
+ 1);
2759 return build_string (buf
);
2762 DEFUN ("char-equal", Fchar_equal
, Schar_equal
, 2, 2, 0,
2763 "Return t if two characters match, optionally ignoring case.\n\
2764 Both arguments must be characters (i.e. integers).\n\
2765 Case is ignored if `case-fold-search' is non-nil in the current buffer.")
2767 register Lisp_Object c1
, c2
;
2770 CHECK_NUMBER (c1
, 0);
2771 CHECK_NUMBER (c2
, 1);
2773 if (XINT (c1
) == XINT (c2
))
2775 if (NILP (current_buffer
->case_fold_search
))
2778 /* Do these in separate statements,
2779 then compare the variables.
2780 because of the way DOWNCASE uses temp variables. */
2781 i1
= DOWNCASE (XFASTINT (c1
));
2782 i2
= DOWNCASE (XFASTINT (c2
));
2783 return (i1
== i2
? Qt
: Qnil
);
2786 /* Transpose the markers in two regions of the current buffer, and
2787 adjust the ones between them if necessary (i.e.: if the regions
2790 START1, END1 are the character positions of the first region.
2791 START1_BYTE, END1_BYTE are the byte positions.
2792 START2, END2 are the character positions of the second region.
2793 START2_BYTE, END2_BYTE are the byte positions.
2795 Traverses the entire marker list of the buffer to do so, adding an
2796 appropriate amount to some, subtracting from some, and leaving the
2797 rest untouched. Most of this is copied from adjust_markers in insdel.c.
2799 It's the caller's job to ensure that START1 <= END1 <= START2 <= END2. */
2802 transpose_markers (start1
, end1
, start2
, end2
,
2803 start1_byte
, end1_byte
, start2_byte
, end2_byte
)
2804 register int start1
, end1
, start2
, end2
;
2805 register int start1_byte
, end1_byte
, start2_byte
, end2_byte
;
2807 register int amt1
, amt1_byte
, amt2
, amt2_byte
, diff
, diff_byte
, mpos
;
2808 register Lisp_Object marker
;
2810 /* Update point as if it were a marker. */
2814 TEMP_SET_PT_BOTH (PT
+ (end2
- end1
),
2815 PT_BYTE
+ (end2_byte
- end1_byte
));
2816 else if (PT
< start2
)
2817 TEMP_SET_PT_BOTH (PT
+ (end2
- start2
) - (end1
- start1
),
2818 (PT_BYTE
+ (end2_byte
- start2_byte
)
2819 - (end1_byte
- start1_byte
)));
2821 TEMP_SET_PT_BOTH (PT
- (start2
- start1
),
2822 PT_BYTE
- (start2_byte
- start1_byte
));
2824 /* We used to adjust the endpoints here to account for the gap, but that
2825 isn't good enough. Even if we assume the caller has tried to move the
2826 gap out of our way, it might still be at start1 exactly, for example;
2827 and that places it `inside' the interval, for our purposes. The amount
2828 of adjustment is nontrivial if there's a `denormalized' marker whose
2829 position is between GPT and GPT + GAP_SIZE, so it's simpler to leave
2830 the dirty work to Fmarker_position, below. */
2832 /* The difference between the region's lengths */
2833 diff
= (end2
- start2
) - (end1
- start1
);
2834 diff_byte
= (end2_byte
- start2_byte
) - (end1_byte
- start1_byte
);
2836 /* For shifting each marker in a region by the length of the other
2837 region plus the distance between the regions. */
2838 amt1
= (end2
- start2
) + (start2
- end1
);
2839 amt2
= (end1
- start1
) + (start2
- end1
);
2840 amt1_byte
= (end2_byte
- start2_byte
) + (start2_byte
- end1_byte
);
2841 amt2_byte
= (end1_byte
- start1_byte
) + (start2_byte
- end1_byte
);
2843 for (marker
= BUF_MARKERS (current_buffer
); !NILP (marker
);
2844 marker
= XMARKER (marker
)->chain
)
2846 mpos
= marker_byte_position (marker
);
2847 if (mpos
>= start1_byte
&& mpos
< end2_byte
)
2849 if (mpos
< end1_byte
)
2851 else if (mpos
< start2_byte
)
2855 XMARKER (marker
)->bytepos
= mpos
;
2857 mpos
= XMARKER (marker
)->charpos
;
2858 if (mpos
>= start1
&& mpos
< end2
)
2862 else if (mpos
< start2
)
2867 XMARKER (marker
)->charpos
= mpos
;
2871 DEFUN ("transpose-regions", Ftranspose_regions
, Stranspose_regions
, 4, 5, 0,
2872 "Transpose region START1 to END1 with START2 to END2.\n\
2873 The regions may not be overlapping, because the size of the buffer is\n\
2874 never changed in a transposition.\n\
2876 Optional fifth arg LEAVE_MARKERS, if non-nil, means don't update\n\
2877 any markers that happen to be located in the regions.\n\
2879 Transposing beyond buffer boundaries is an error.")
2880 (startr1
, endr1
, startr2
, endr2
, leave_markers
)
2881 Lisp_Object startr1
, endr1
, startr2
, endr2
, leave_markers
;
2883 register int start1
, end1
, start2
, end2
;
2884 int start1_byte
, start2_byte
, len1_byte
, len2_byte
;
2885 int gap
, len1
, len_mid
, len2
;
2886 unsigned char *start1_addr
, *start2_addr
, *temp
;
2887 int combined_before_bytes_1
, combined_after_bytes_1
;
2888 int combined_before_bytes_2
, combined_after_bytes_2
;
2889 struct gcpro gcpro1
, gcpro2
;
2891 #ifdef USE_TEXT_PROPERTIES
2892 INTERVAL cur_intv
, tmp_interval1
, tmp_interval_mid
, tmp_interval2
;
2893 cur_intv
= BUF_INTERVALS (current_buffer
);
2894 #endif /* USE_TEXT_PROPERTIES */
2896 validate_region (&startr1
, &endr1
);
2897 validate_region (&startr2
, &endr2
);
2899 start1
= XFASTINT (startr1
);
2900 end1
= XFASTINT (endr1
);
2901 start2
= XFASTINT (startr2
);
2902 end2
= XFASTINT (endr2
);
2905 /* Swap the regions if they're reversed. */
2908 register int glumph
= start1
;
2916 len1
= end1
- start1
;
2917 len2
= end2
- start2
;
2920 error ("Transposed regions overlap");
2921 else if (start1
== end1
|| start2
== end2
)
2922 error ("Transposed region has length 0");
2924 /* The possibilities are:
2925 1. Adjacent (contiguous) regions, or separate but equal regions
2926 (no, really equal, in this case!), or
2927 2. Separate regions of unequal size.
2929 The worst case is usually No. 2. It means that (aside from
2930 potential need for getting the gap out of the way), there also
2931 needs to be a shifting of the text between the two regions. So
2932 if they are spread far apart, we are that much slower... sigh. */
2934 /* It must be pointed out that the really studly thing to do would
2935 be not to move the gap at all, but to leave it in place and work
2936 around it if necessary. This would be extremely efficient,
2937 especially considering that people are likely to do
2938 transpositions near where they are working interactively, which
2939 is exactly where the gap would be found. However, such code
2940 would be much harder to write and to read. So, if you are
2941 reading this comment and are feeling squirrely, by all means have
2942 a go! I just didn't feel like doing it, so I will simply move
2943 the gap the minimum distance to get it out of the way, and then
2944 deal with an unbroken array. */
2946 /* Make sure the gap won't interfere, by moving it out of the text
2947 we will operate on. */
2948 if (start1
< gap
&& gap
< end2
)
2950 if (gap
- start1
< end2
- gap
)
2956 start1_byte
= CHAR_TO_BYTE (start1
);
2957 start2_byte
= CHAR_TO_BYTE (start2
);
2958 len1_byte
= CHAR_TO_BYTE (end1
) - start1_byte
;
2959 len2_byte
= CHAR_TO_BYTE (end2
) - start2_byte
;
2963 combined_before_bytes_2
2964 = count_combining_before (BYTE_POS_ADDR (start2_byte
),
2965 len2_byte
, start1
, start1_byte
);
2966 combined_before_bytes_1
2967 = count_combining_before (BYTE_POS_ADDR (start1_byte
),
2968 len1_byte
, end2
, start2_byte
+ len2_byte
);
2969 combined_after_bytes_1
2970 = count_combining_after (BYTE_POS_ADDR (start1_byte
),
2971 len1_byte
, end2
, start2_byte
+ len2_byte
);
2972 combined_after_bytes_2
= 0;
2976 combined_before_bytes_2
2977 = count_combining_before (BYTE_POS_ADDR (start2_byte
),
2978 len2_byte
, start1
, start1_byte
);
2979 combined_before_bytes_1
2980 = count_combining_before (BYTE_POS_ADDR (start1_byte
),
2981 len1_byte
, start2
, start2_byte
);
2982 combined_after_bytes_2
2983 = count_combining_after (BYTE_POS_ADDR (start2_byte
),
2984 len2_byte
, end1
, start1_byte
+ len1_byte
);
2985 combined_after_bytes_1
2986 = count_combining_after (BYTE_POS_ADDR (start1_byte
),
2987 len1_byte
, end2
, start2_byte
+ len2_byte
);
2990 /* If any combining is going to happen, do this the stupid way,
2991 because replace handles combining properly. */
2992 if (combined_before_bytes_1
|| combined_before_bytes_2
2993 || combined_after_bytes_1
|| combined_after_bytes_2
)
2995 Lisp_Object text1
, text2
;
2997 text1
= text2
= Qnil
;
2998 GCPRO2 (text1
, text2
);
3000 text1
= make_buffer_string_both (start1
, start1_byte
,
3001 end1
, start1_byte
+ len1_byte
, 1);
3002 text2
= make_buffer_string_both (start2
, start2_byte
,
3003 end2
, start2_byte
+ len2_byte
, 1);
3005 transpose_markers (start1
, end1
, start2
, end2
,
3006 start1_byte
, start1_byte
+ len1_byte
,
3007 start2_byte
, start2_byte
+ len2_byte
);
3009 replace_range (start2
, end2
, text1
, 1, 0, 0);
3010 replace_range (start1
, end1
, text2
, 1, 0, 0);
3016 /* Hmmm... how about checking to see if the gap is large
3017 enough to use as the temporary storage? That would avoid an
3018 allocation... interesting. Later, don't fool with it now. */
3020 /* Working without memmove, for portability (sigh), so must be
3021 careful of overlapping subsections of the array... */
3023 if (end1
== start2
) /* adjacent regions */
3025 modify_region (current_buffer
, start1
, end2
);
3026 record_change (start1
, len1
+ len2
);
3028 #ifdef USE_TEXT_PROPERTIES
3029 tmp_interval1
= copy_intervals (cur_intv
, start1
, len1
);
3030 tmp_interval2
= copy_intervals (cur_intv
, start2
, len2
);
3031 Fset_text_properties (make_number (start1
), make_number (end2
),
3033 #endif /* USE_TEXT_PROPERTIES */
3035 /* First region smaller than second. */
3036 if (len1_byte
< len2_byte
)
3038 /* We use alloca only if it is small,
3039 because we want to avoid stack overflow. */
3040 if (len2_byte
> 20000)
3041 temp
= (unsigned char *) xmalloc (len2_byte
);
3043 temp
= (unsigned char *) alloca (len2_byte
);
3045 /* Don't precompute these addresses. We have to compute them
3046 at the last minute, because the relocating allocator might
3047 have moved the buffer around during the xmalloc. */
3048 start1_addr
= BYTE_POS_ADDR (start1_byte
);
3049 start2_addr
= BYTE_POS_ADDR (start2_byte
);
3051 bcopy (start2_addr
, temp
, len2_byte
);
3052 bcopy (start1_addr
, start1_addr
+ len2_byte
, len1_byte
);
3053 bcopy (temp
, start1_addr
, len2_byte
);
3054 if (len2_byte
> 20000)
3058 /* First region not smaller than second. */
3060 if (len1_byte
> 20000)
3061 temp
= (unsigned char *) xmalloc (len1_byte
);
3063 temp
= (unsigned char *) alloca (len1_byte
);
3064 start1_addr
= BYTE_POS_ADDR (start1_byte
);
3065 start2_addr
= BYTE_POS_ADDR (start2_byte
);
3066 bcopy (start1_addr
, temp
, len1_byte
);
3067 bcopy (start2_addr
, start1_addr
, len2_byte
);
3068 bcopy (temp
, start1_addr
+ len2_byte
, len1_byte
);
3069 if (len1_byte
> 20000)
3072 #ifdef USE_TEXT_PROPERTIES
3073 graft_intervals_into_buffer (tmp_interval1
, start1
+ len2
,
3074 len1
, current_buffer
, 0);
3075 graft_intervals_into_buffer (tmp_interval2
, start1
,
3076 len2
, current_buffer
, 0);
3077 #endif /* USE_TEXT_PROPERTIES */
3079 /* Non-adjacent regions, because end1 != start2, bleagh... */
3082 len_mid
= start2_byte
- (start1_byte
+ len1_byte
);
3084 if (len1_byte
== len2_byte
)
3085 /* Regions are same size, though, how nice. */
3087 modify_region (current_buffer
, start1
, end1
);
3088 modify_region (current_buffer
, start2
, end2
);
3089 record_change (start1
, len1
);
3090 record_change (start2
, len2
);
3091 #ifdef USE_TEXT_PROPERTIES
3092 tmp_interval1
= copy_intervals (cur_intv
, start1
, len1
);
3093 tmp_interval2
= copy_intervals (cur_intv
, start2
, len2
);
3094 Fset_text_properties (make_number (start1
), make_number (end1
),
3096 Fset_text_properties (make_number (start2
), make_number (end2
),
3098 #endif /* USE_TEXT_PROPERTIES */
3100 if (len1_byte
> 20000)
3101 temp
= (unsigned char *) xmalloc (len1_byte
);
3103 temp
= (unsigned char *) alloca (len1_byte
);
3104 start1_addr
= BYTE_POS_ADDR (start1_byte
);
3105 start2_addr
= BYTE_POS_ADDR (start2_byte
);
3106 bcopy (start1_addr
, temp
, len1_byte
);
3107 bcopy (start2_addr
, start1_addr
, len2_byte
);
3108 bcopy (temp
, start2_addr
, len1_byte
);
3109 if (len1_byte
> 20000)
3111 #ifdef USE_TEXT_PROPERTIES
3112 graft_intervals_into_buffer (tmp_interval1
, start2
,
3113 len1
, current_buffer
, 0);
3114 graft_intervals_into_buffer (tmp_interval2
, start1
,
3115 len2
, current_buffer
, 0);
3116 #endif /* USE_TEXT_PROPERTIES */
3119 else if (len1_byte
< len2_byte
) /* Second region larger than first */
3120 /* Non-adjacent & unequal size, area between must also be shifted. */
3122 modify_region (current_buffer
, start1
, end2
);
3123 record_change (start1
, (end2
- start1
));
3124 #ifdef USE_TEXT_PROPERTIES
3125 tmp_interval1
= copy_intervals (cur_intv
, start1
, len1
);
3126 tmp_interval_mid
= copy_intervals (cur_intv
, end1
, len_mid
);
3127 tmp_interval2
= copy_intervals (cur_intv
, start2
, len2
);
3128 Fset_text_properties (make_number (start1
), make_number (end2
),
3130 #endif /* USE_TEXT_PROPERTIES */
3132 /* holds region 2 */
3133 if (len2_byte
> 20000)
3134 temp
= (unsigned char *) xmalloc (len2_byte
);
3136 temp
= (unsigned char *) alloca (len2_byte
);
3137 start1_addr
= BYTE_POS_ADDR (start1_byte
);
3138 start2_addr
= BYTE_POS_ADDR (start2_byte
);
3139 bcopy (start2_addr
, temp
, len2_byte
);
3140 bcopy (start1_addr
, start1_addr
+ len_mid
+ len2_byte
, len1_byte
);
3141 safe_bcopy (start1_addr
+ len1_byte
, start1_addr
+ len2_byte
, len_mid
);
3142 bcopy (temp
, start1_addr
, len2_byte
);
3143 if (len2_byte
> 20000)
3145 #ifdef USE_TEXT_PROPERTIES
3146 graft_intervals_into_buffer (tmp_interval1
, end2
- len1
,
3147 len1
, current_buffer
, 0);
3148 graft_intervals_into_buffer (tmp_interval_mid
, start1
+ len2
,
3149 len_mid
, current_buffer
, 0);
3150 graft_intervals_into_buffer (tmp_interval2
, start1
,
3151 len2
, current_buffer
, 0);
3152 #endif /* USE_TEXT_PROPERTIES */
3155 /* Second region smaller than first. */
3157 record_change (start1
, (end2
- start1
));
3158 modify_region (current_buffer
, start1
, end2
);
3160 #ifdef USE_TEXT_PROPERTIES
3161 tmp_interval1
= copy_intervals (cur_intv
, start1
, len1
);
3162 tmp_interval_mid
= copy_intervals (cur_intv
, end1
, len_mid
);
3163 tmp_interval2
= copy_intervals (cur_intv
, start2
, len2
);
3164 Fset_text_properties (make_number (start1
), make_number (end2
),
3166 #endif /* USE_TEXT_PROPERTIES */
3168 /* holds region 1 */
3169 if (len1_byte
> 20000)
3170 temp
= (unsigned char *) xmalloc (len1_byte
);
3172 temp
= (unsigned char *) alloca (len1_byte
);
3173 start1_addr
= BYTE_POS_ADDR (start1_byte
);
3174 start2_addr
= BYTE_POS_ADDR (start2_byte
);
3175 bcopy (start1_addr
, temp
, len1_byte
);
3176 bcopy (start2_addr
, start1_addr
, len2_byte
);
3177 bcopy (start1_addr
+ len1_byte
, start1_addr
+ len2_byte
, len_mid
);
3178 bcopy (temp
, start1_addr
+ len2_byte
+ len_mid
, len1_byte
);
3179 if (len1_byte
> 20000)
3181 #ifdef USE_TEXT_PROPERTIES
3182 graft_intervals_into_buffer (tmp_interval1
, end2
- len1
,
3183 len1
, current_buffer
, 0);
3184 graft_intervals_into_buffer (tmp_interval_mid
, start1
+ len2
,
3185 len_mid
, current_buffer
, 0);
3186 graft_intervals_into_buffer (tmp_interval2
, start1
,
3187 len2
, current_buffer
, 0);
3188 #endif /* USE_TEXT_PROPERTIES */
3192 /* When doing multiple transpositions, it might be nice
3193 to optimize this. Perhaps the markers in any one buffer
3194 should be organized in some sorted data tree. */
3195 if (NILP (leave_markers
))
3197 transpose_markers (start1
, end1
, start2
, end2
,
3198 start1_byte
, start1_byte
+ len1_byte
,
3199 start2_byte
, start2_byte
+ len2_byte
);
3200 fix_overlays_in_range (start1
, end2
);
3212 Qbuffer_access_fontify_functions
3213 = intern ("buffer-access-fontify-functions");
3214 staticpro (&Qbuffer_access_fontify_functions
);
3216 DEFVAR_LISP ("buffer-access-fontify-functions",
3217 &Vbuffer_access_fontify_functions
,
3218 "List of functions called by `buffer-substring' to fontify if necessary.\n\
3219 Each function is called with two arguments which specify the range\n\
3220 of the buffer being accessed.");
3221 Vbuffer_access_fontify_functions
= Qnil
;
3225 extern Lisp_Object Vprin1_to_string_buffer
;
3226 obuf
= Fcurrent_buffer ();
3227 /* Do this here, because init_buffer_once is too early--it won't work. */
3228 Fset_buffer (Vprin1_to_string_buffer
);
3229 /* Make sure buffer-access-fontify-functions is nil in this buffer. */
3230 Fset (Fmake_local_variable (intern ("buffer-access-fontify-functions")),
3235 DEFVAR_LISP ("buffer-access-fontified-property",
3236 &Vbuffer_access_fontified_property
,
3237 "Property which (if non-nil) indicates text has been fontified.\n\
3238 `buffer-substring' need not call the `buffer-access-fontify-functions'\n\
3239 functions if all the text being accessed has this property.");
3240 Vbuffer_access_fontified_property
= Qnil
;
3242 DEFVAR_LISP ("system-name", &Vsystem_name
,
3243 "The name of the machine Emacs is running on.");
3245 DEFVAR_LISP ("user-full-name", &Vuser_full_name
,
3246 "The full name of the user logged in.");
3248 DEFVAR_LISP ("user-login-name", &Vuser_login_name
,
3249 "The user's name, taken from environment variables if possible.");
3251 DEFVAR_LISP ("user-real-login-name", &Vuser_real_login_name
,
3252 "The user's name, based upon the real uid only.");
3254 defsubr (&Schar_equal
);
3255 defsubr (&Sgoto_char
);
3256 defsubr (&Sstring_to_char
);
3257 defsubr (&Schar_to_string
);
3258 defsubr (&Sbuffer_substring
);
3259 defsubr (&Sbuffer_substring_no_properties
);
3260 defsubr (&Sbuffer_string
);
3262 defsubr (&Spoint_marker
);
3263 defsubr (&Smark_marker
);
3265 defsubr (&Sregion_beginning
);
3266 defsubr (&Sregion_end
);
3268 defsubr (&Sline_beginning_position
);
3269 defsubr (&Sline_end_position
);
3271 /* defsubr (&Smark); */
3272 /* defsubr (&Sset_mark); */
3273 defsubr (&Ssave_excursion
);
3274 defsubr (&Ssave_current_buffer
);
3276 defsubr (&Sbufsize
);
3277 defsubr (&Spoint_max
);
3278 defsubr (&Spoint_min
);
3279 defsubr (&Spoint_min_marker
);
3280 defsubr (&Spoint_max_marker
);
3281 defsubr (&Sgap_position
);
3282 defsubr (&Sgap_size
);
3283 defsubr (&Sposition_bytes
);
3284 defsubr (&Sbyte_to_position
);
3290 defsubr (&Sfollowing_char
);
3291 defsubr (&Sprevious_char
);
3292 defsubr (&Schar_after
);
3293 defsubr (&Schar_before
);
3295 defsubr (&Sinsert_before_markers
);
3296 defsubr (&Sinsert_and_inherit
);
3297 defsubr (&Sinsert_and_inherit_before_markers
);
3298 defsubr (&Sinsert_char
);
3300 defsubr (&Suser_login_name
);
3301 defsubr (&Suser_real_login_name
);
3302 defsubr (&Suser_uid
);
3303 defsubr (&Suser_real_uid
);
3304 defsubr (&Suser_full_name
);
3305 defsubr (&Semacs_pid
);
3306 defsubr (&Scurrent_time
);
3307 defsubr (&Sformat_time_string
);
3308 defsubr (&Sdecode_time
);
3309 defsubr (&Sencode_time
);
3310 defsubr (&Scurrent_time_string
);
3311 defsubr (&Scurrent_time_zone
);
3312 defsubr (&Sset_time_zone_rule
);
3313 defsubr (&Ssystem_name
);
3314 defsubr (&Smessage
);
3315 defsubr (&Smessage_box
);
3316 defsubr (&Smessage_or_box
);
3317 defsubr (&Scurrent_message
);
3320 defsubr (&Sinsert_buffer_substring
);
3321 defsubr (&Scompare_buffer_substrings
);
3322 defsubr (&Ssubst_char_in_region
);
3323 defsubr (&Stranslate_region
);
3324 defsubr (&Sdelete_region
);
3326 defsubr (&Snarrow_to_region
);
3327 defsubr (&Ssave_restriction
);
3328 defsubr (&Stranspose_regions
);