1 /* File IO for GNU Emacs.
2 Copyright (C) 1985,86,87,88,93,94,95,96,97,98,99,2000, 2001
3 Free Software Foundation, Inc.
5 This file is part of GNU Emacs.
7 GNU Emacs is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2, or (at your option)
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.
17 You should have received a copy of the GNU General Public License
18 along with GNU Emacs; see the file COPYING. If not, write to
19 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
24 #if defined (USG5) || defined (BSD_SYSTEM) || defined (GNU_LINUX)
29 #include <sys/types.h>
36 #if !defined (S_ISLNK) && defined (S_IFLNK)
37 # define S_ISLNK(m) (((m) & S_IFMT) == S_IFLNK)
40 #if !defined (S_ISFIFO) && defined (S_IFIFO)
41 # define S_ISFIFO(m) (((m) & S_IFMT) == S_IFIFO)
44 #if !defined (S_ISREG) && defined (S_IFREG)
45 # define S_ISREG(m) (((m) & S_IFMT) == S_IFREG)
76 #include "intervals.h"
87 #endif /* not WINDOWSNT */
91 #include <sys/param.h>
99 #define CORRECT_DIR_SEPS(s) \
100 do { if ('/' == DIRECTORY_SEP) dostounix_filename (s); \
101 else unixtodos_filename (s); \
103 /* On Windows, drive letters must be alphabetic - on DOS, the Netware
104 redirector allows the six letters between 'Z' and 'a' as well. */
106 #define IS_DRIVE(x) ((x) >= 'A' && (x) <= 'z')
109 #define IS_DRIVE(x) isalpha (x)
111 /* Need to lower-case the drive letter, or else expanded
112 filenames will sometimes compare inequal, because
113 `expand-file-name' doesn't always down-case the drive letter. */
114 #define DRIVE_LETTER(x) (tolower (x))
135 #include "commands.h"
136 extern int use_dialog_box
;
150 /* Nonzero during writing of auto-save files */
153 /* Set by auto_save_1 to mode of original file so Fwrite_region will create
154 a new file with the same mode as the original */
155 int auto_save_mode_bits
;
157 /* Coding system for file names, or nil if none. */
158 Lisp_Object Vfile_name_coding_system
;
160 /* Coding system for file names used only when
161 Vfile_name_coding_system is nil. */
162 Lisp_Object Vdefault_file_name_coding_system
;
164 /* Alist of elements (REGEXP . HANDLER) for file names
165 whose I/O is done with a special handler. */
166 Lisp_Object Vfile_name_handler_alist
;
168 /* Format for auto-save files */
169 Lisp_Object Vauto_save_file_format
;
171 /* Lisp functions for translating file formats */
172 Lisp_Object Qformat_decode
, Qformat_annotate_function
;
174 /* Function to be called to decide a coding system of a reading file. */
175 Lisp_Object Vset_auto_coding_function
;
177 /* Functions to be called to process text properties in inserted file. */
178 Lisp_Object Vafter_insert_file_functions
;
180 /* Functions to be called to create text property annotations for file. */
181 Lisp_Object Vwrite_region_annotate_functions
;
183 /* During build_annotations, each time an annotation function is called,
184 this holds the annotations made by the previous functions. */
185 Lisp_Object Vwrite_region_annotations_so_far
;
187 /* File name in which we write a list of all our auto save files. */
188 Lisp_Object Vauto_save_list_file_name
;
190 /* Function to call to read a file name. */
191 Lisp_Object Vread_file_name_function
;
193 /* Current predicate used by read_file_name_internal. */
194 Lisp_Object Vread_file_name_predicate
;
196 /* Nonzero means, when reading a filename in the minibuffer,
197 start out by inserting the default directory into the minibuffer. */
198 int insert_default_directory
;
200 /* On VMS, nonzero means write new files with record format stmlf.
201 Zero means use var format. */
204 /* On NT, specifies the directory separator character, used (eg.) when
205 expanding file names. This can be bound to / or \. */
206 Lisp_Object Vdirectory_sep_char
;
208 extern Lisp_Object Vuser_login_name
;
211 extern Lisp_Object Vw32_get_true_file_attributes
;
214 extern int minibuf_level
;
216 extern int minibuffer_auto_raise
;
218 /* These variables describe handlers that have "already" had a chance
219 to handle the current operation.
221 Vinhibit_file_name_handlers is a list of file name handlers.
222 Vinhibit_file_name_operation is the operation being handled.
223 If we try to handle that operation, we ignore those handlers. */
225 static Lisp_Object Vinhibit_file_name_handlers
;
226 static Lisp_Object Vinhibit_file_name_operation
;
228 Lisp_Object Qfile_error
, Qfile_already_exists
, Qfile_date_error
;
230 Lisp_Object Qfile_name_history
;
232 Lisp_Object Qcar_less_than_car
;
234 static int a_write
P_ ((int, Lisp_Object
, int, int,
235 Lisp_Object
*, struct coding_system
*));
236 static int e_write
P_ ((int, Lisp_Object
, int, int, struct coding_system
*));
240 report_file_error (string
, data
)
244 Lisp_Object errstring
;
247 synchronize_system_messages_locale ();
248 errstring
= code_convert_string_norecord (build_string (strerror (errorno
)),
249 Vlocale_coding_system
, 0);
255 Fsignal (Qfile_already_exists
, Fcons (errstring
, data
));
258 /* System error messages are capitalized. Downcase the initial
259 unless it is followed by a slash. */
260 if (SREF (errstring
, 1) != '/')
261 SSET (errstring
, 0, DOWNCASE (SREF (errstring
, 0)));
263 Fsignal (Qfile_error
,
264 Fcons (build_string (string
), Fcons (errstring
, data
)));
269 close_file_unwind (fd
)
272 emacs_close (XFASTINT (fd
));
276 /* Restore point, having saved it as a marker. */
279 restore_point_unwind (location
)
280 Lisp_Object location
;
282 Fgoto_char (location
);
283 Fset_marker (location
, Qnil
, Qnil
);
287 Lisp_Object Qexpand_file_name
;
288 Lisp_Object Qsubstitute_in_file_name
;
289 Lisp_Object Qdirectory_file_name
;
290 Lisp_Object Qfile_name_directory
;
291 Lisp_Object Qfile_name_nondirectory
;
292 Lisp_Object Qunhandled_file_name_directory
;
293 Lisp_Object Qfile_name_as_directory
;
294 Lisp_Object Qcopy_file
;
295 Lisp_Object Qmake_directory_internal
;
296 Lisp_Object Qmake_directory
;
297 Lisp_Object Qdelete_directory
;
298 Lisp_Object Qdelete_file
;
299 Lisp_Object Qrename_file
;
300 Lisp_Object Qadd_name_to_file
;
301 Lisp_Object Qmake_symbolic_link
;
302 Lisp_Object Qfile_exists_p
;
303 Lisp_Object Qfile_executable_p
;
304 Lisp_Object Qfile_readable_p
;
305 Lisp_Object Qfile_writable_p
;
306 Lisp_Object Qfile_symlink_p
;
307 Lisp_Object Qaccess_file
;
308 Lisp_Object Qfile_directory_p
;
309 Lisp_Object Qfile_regular_p
;
310 Lisp_Object Qfile_accessible_directory_p
;
311 Lisp_Object Qfile_modes
;
312 Lisp_Object Qset_file_modes
;
313 Lisp_Object Qfile_newer_than_file_p
;
314 Lisp_Object Qinsert_file_contents
;
315 Lisp_Object Qwrite_region
;
316 Lisp_Object Qverify_visited_file_modtime
;
317 Lisp_Object Qset_visited_file_modtime
;
319 DEFUN ("find-file-name-handler", Ffind_file_name_handler
, Sfind_file_name_handler
, 2, 2, 0,
320 doc
: /* Return FILENAME's handler function for OPERATION, if it has one.
321 Otherwise, return nil.
322 A file name is handled if one of the regular expressions in
323 `file-name-handler-alist' matches it.
325 If OPERATION equals `inhibit-file-name-operation', then we ignore
326 any handlers that are members of `inhibit-file-name-handlers',
327 but we still do run any other handlers. This lets handlers
328 use the standard functions without calling themselves recursively. */)
329 (filename
, operation
)
330 Lisp_Object filename
, operation
;
332 /* This function must not munge the match data. */
333 Lisp_Object chain
, inhibited_handlers
, result
;
337 CHECK_STRING (filename
);
339 if (EQ (operation
, Vinhibit_file_name_operation
))
340 inhibited_handlers
= Vinhibit_file_name_handlers
;
342 inhibited_handlers
= Qnil
;
344 for (chain
= Vfile_name_handler_alist
; CONSP (chain
);
345 chain
= XCDR (chain
))
355 && (match_pos
= fast_string_match (string
, filename
)) > pos
)
357 Lisp_Object handler
, tem
;
359 handler
= XCDR (elt
);
360 tem
= Fmemq (handler
, inhibited_handlers
);
374 DEFUN ("file-name-directory", Ffile_name_directory
, Sfile_name_directory
,
376 doc
: /* Return the directory component in file name FILENAME.
377 Return nil if FILENAME does not include a directory.
378 Otherwise return a directory spec.
379 Given a Unix syntax file name, returns a string ending in slash;
380 on VMS, perhaps instead a string ending in `:', `]' or `>'. */)
382 Lisp_Object filename
;
385 register const unsigned char *beg
;
387 register unsigned char *beg
;
389 register const unsigned char *p
;
392 CHECK_STRING (filename
);
394 /* If the file name has special constructs in it,
395 call the corresponding file handler. */
396 handler
= Ffind_file_name_handler (filename
, Qfile_name_directory
);
398 return call2 (handler
, Qfile_name_directory
, filename
);
400 #ifdef FILE_SYSTEM_CASE
401 filename
= FILE_SYSTEM_CASE (filename
);
403 beg
= SDATA (filename
);
405 beg
= strcpy (alloca (strlen (beg
) + 1), beg
);
407 p
= beg
+ SBYTES (filename
);
409 while (p
!= beg
&& !IS_DIRECTORY_SEP (p
[-1])
411 && p
[-1] != ':' && p
[-1] != ']' && p
[-1] != '>'
414 /* only recognise drive specifier at the beginning */
416 /* handle the "/:d:foo" and "/:foo" cases correctly */
417 && ((p
== beg
+ 2 && !IS_DIRECTORY_SEP (*beg
))
418 || (p
== beg
+ 4 && IS_DIRECTORY_SEP (*beg
))))
425 /* Expansion of "c:" to drive and default directory. */
428 /* MAXPATHLEN+1 is guaranteed to be enough space for getdefdir. */
429 unsigned char *res
= alloca (MAXPATHLEN
+ 1);
430 unsigned char *r
= res
;
432 if (p
== beg
+ 4 && IS_DIRECTORY_SEP (*beg
) && beg
[1] == ':')
434 strncpy (res
, beg
, 2);
439 if (getdefdir (toupper (*beg
) - 'A' + 1, r
))
441 if (!IS_DIRECTORY_SEP (res
[strlen (res
) - 1]))
444 p
= beg
+ strlen (beg
);
447 CORRECT_DIR_SEPS (beg
);
450 if (STRING_MULTIBYTE (filename
))
451 return make_string (beg
, p
- beg
);
452 return make_unibyte_string (beg
, p
- beg
);
455 DEFUN ("file-name-nondirectory", Ffile_name_nondirectory
,
456 Sfile_name_nondirectory
, 1, 1, 0,
457 doc
: /* Return file name FILENAME sans its directory.
458 For example, in a Unix-syntax file name,
459 this is everything after the last slash,
460 or the entire name if it contains no slash. */)
462 Lisp_Object filename
;
464 register const unsigned char *beg
, *p
, *end
;
467 CHECK_STRING (filename
);
469 /* If the file name has special constructs in it,
470 call the corresponding file handler. */
471 handler
= Ffind_file_name_handler (filename
, Qfile_name_nondirectory
);
473 return call2 (handler
, Qfile_name_nondirectory
, filename
);
475 beg
= SDATA (filename
);
476 end
= p
= beg
+ SBYTES (filename
);
478 while (p
!= beg
&& !IS_DIRECTORY_SEP (p
[-1])
480 && p
[-1] != ':' && p
[-1] != ']' && p
[-1] != '>'
483 /* only recognise drive specifier at beginning */
485 /* handle the "/:d:foo" case correctly */
486 && (p
== beg
+ 2 || (p
== beg
+ 4 && IS_DIRECTORY_SEP (*beg
))))
491 if (STRING_MULTIBYTE (filename
))
492 return make_string (p
, end
- p
);
493 return make_unibyte_string (p
, end
- p
);
496 DEFUN ("unhandled-file-name-directory", Funhandled_file_name_directory
,
497 Sunhandled_file_name_directory
, 1, 1, 0,
498 doc
: /* Return a directly usable directory name somehow associated with FILENAME.
499 A `directly usable' directory name is one that may be used without the
500 intervention of any file handler.
501 If FILENAME is a directly usable file itself, return
502 \(file-name-directory FILENAME).
503 The `call-process' and `start-process' functions use this function to
504 get a current directory to run processes in. */)
506 Lisp_Object filename
;
510 /* If the file name has special constructs in it,
511 call the corresponding file handler. */
512 handler
= Ffind_file_name_handler (filename
, Qunhandled_file_name_directory
);
514 return call2 (handler
, Qunhandled_file_name_directory
, filename
);
516 return Ffile_name_directory (filename
);
521 file_name_as_directory (out
, in
)
524 int size
= strlen (in
) - 1;
537 /* Is it already a directory string? */
538 if (in
[size
] == ':' || in
[size
] == ']' || in
[size
] == '>')
540 /* Is it a VMS directory file name? If so, hack VMS syntax. */
541 else if (! index (in
, '/')
542 && ((size
> 3 && ! strcmp (&in
[size
- 3], ".DIR"))
543 || (size
> 3 && ! strcmp (&in
[size
- 3], ".dir"))
544 || (size
> 5 && (! strncmp (&in
[size
- 5], ".DIR", 4)
545 || ! strncmp (&in
[size
- 5], ".dir", 4))
546 && (in
[size
- 1] == '.' || in
[size
- 1] == ';')
547 && in
[size
] == '1')))
549 register char *p
, *dot
;
553 dir:x.dir --> dir:[x]
554 dir:[x]y.dir --> dir:[x.y] */
556 while (p
!= in
&& *p
!= ':' && *p
!= '>' && *p
!= ']') p
--;
559 strncpy (out
, in
, p
- in
);
578 dot
= index (p
, '.');
581 /* blindly remove any extension */
582 size
= strlen (out
) + (dot
- p
);
583 strncat (out
, p
, dot
- p
);
594 /* For Unix syntax, Append a slash if necessary */
595 if (!IS_DIRECTORY_SEP (out
[size
]))
597 /* Cannot use DIRECTORY_SEP, which could have any value */
599 out
[size
+ 2] = '\0';
602 CORRECT_DIR_SEPS (out
);
608 DEFUN ("file-name-as-directory", Ffile_name_as_directory
,
609 Sfile_name_as_directory
, 1, 1, 0,
610 doc
: /* Return a string representing the file name FILE interpreted as a directory.
611 This operation exists because a directory is also a file, but its name as
612 a directory is different from its name as a file.
613 The result can be used as the value of `default-directory'
614 or passed as second argument to `expand-file-name'.
615 For a Unix-syntax file name, just appends a slash.
616 On VMS, converts \"[X]FOO.DIR\" to \"[X.FOO]\", etc. */)
627 /* If the file name has special constructs in it,
628 call the corresponding file handler. */
629 handler
= Ffind_file_name_handler (file
, Qfile_name_as_directory
);
631 return call2 (handler
, Qfile_name_as_directory
, file
);
633 buf
= (char *) alloca (SBYTES (file
) + 10);
634 return build_string (file_name_as_directory (buf
, SDATA (file
)));
638 * Convert from directory name to filename.
640 * xyzzy:[mukesh.emacs] => xyzzy:[mukesh]emacs.dir.1
641 * xyzzy:[mukesh] => xyzzy:[000000]mukesh.dir.1
642 * On UNIX, it's simple: just make sure there isn't a terminating /
644 * Value is nonzero if the string output is different from the input.
648 directory_file_name (src
, dst
)
656 struct FAB fab
= cc$rms_fab
;
657 struct NAM nam
= cc$rms_nam
;
658 char esa
[NAM$C_MAXRSS
];
663 if (! index (src
, '/')
664 && (src
[slen
- 1] == ']'
665 || src
[slen
- 1] == ':'
666 || src
[slen
- 1] == '>'))
668 /* VMS style - convert [x.y.z] to [x.y]z, [x] to [000000]x */
670 fab
.fab$b_fns
= slen
;
671 fab
.fab$l_nam
= &nam
;
672 fab
.fab$l_fop
= FAB$M_NAM
;
675 nam
.nam$b_ess
= sizeof esa
;
676 nam
.nam$b_nop
|= NAM$M_SYNCHK
;
678 /* We call SYS$PARSE to handle such things as [--] for us. */
679 if (SYS$
PARSE (&fab
, 0, 0) == RMS$_NORMAL
)
681 slen
= nam
.nam$b_esl
;
682 if (esa
[slen
- 1] == ';' && esa
[slen
- 2] == '.')
687 if (src
[slen
- 1] != ']' && src
[slen
- 1] != '>')
689 /* what about when we have logical_name:???? */
690 if (src
[slen
- 1] == ':')
691 { /* Xlate logical name and see what we get */
692 ptr
= strcpy (dst
, src
); /* upper case for getenv */
695 if ('a' <= *ptr
&& *ptr
<= 'z')
699 dst
[slen
- 1] = 0; /* remove colon */
700 if (!(src
= egetenv (dst
)))
702 /* should we jump to the beginning of this procedure?
703 Good points: allows us to use logical names that xlate
705 Bad points: can be a problem if we just translated to a device
707 For now, I'll punt and always expect VMS names, and hope for
710 if (src
[slen
- 1] != ']' && src
[slen
- 1] != '>')
711 { /* no recursion here! */
717 { /* not a directory spec */
722 bracket
= src
[slen
- 1];
724 /* If bracket is ']' or '>', bracket - 2 is the corresponding
726 ptr
= index (src
, bracket
- 2);
728 { /* no opening bracket */
732 if (!(rptr
= rindex (src
, '.')))
735 strncpy (dst
, src
, slen
);
739 dst
[slen
++] = bracket
;
744 /* If we have the top-level of a rooted directory (i.e. xx:[000000]),
745 then translate the device and recurse. */
746 if (dst
[slen
- 1] == ':'
747 && dst
[slen
- 2] != ':' /* skip decnet nodes */
748 && strcmp (src
+ slen
, "[000000]") == 0)
750 dst
[slen
- 1] = '\0';
751 if ((ptr
= egetenv (dst
))
752 && (rlen
= strlen (ptr
) - 1) > 0
753 && (ptr
[rlen
] == ']' || ptr
[rlen
] == '>')
754 && ptr
[rlen
- 1] == '.')
756 char * buf
= (char *) alloca (strlen (ptr
) + 1);
760 return directory_file_name (buf
, dst
);
765 strcat (dst
, "[000000]");
769 rlen
= strlen (rptr
) - 1;
770 strncat (dst
, rptr
, rlen
);
771 dst
[slen
+ rlen
] = '\0';
772 strcat (dst
, ".DIR.1");
776 /* Process as Unix format: just remove any final slash.
777 But leave "/" unchanged; do not change it to "". */
780 /* Handle // as root for apollo's. */
781 if ((slen
> 2 && dst
[slen
- 1] == '/')
782 || (slen
> 1 && dst
[0] != '/' && dst
[slen
- 1] == '/'))
786 && IS_DIRECTORY_SEP (dst
[slen
- 1])
788 && !IS_ANY_SEP (dst
[slen
- 2])
794 CORRECT_DIR_SEPS (dst
);
799 DEFUN ("directory-file-name", Fdirectory_file_name
, Sdirectory_file_name
,
801 doc
: /* Returns the file name of the directory named DIRECTORY.
802 This is the name of the file that holds the data for the directory DIRECTORY.
803 This operation exists because a directory is also a file, but its name as
804 a directory is different from its name as a file.
805 In Unix-syntax, this function just removes the final slash.
806 On VMS, given a VMS-syntax directory name such as \"[X.Y]\",
807 it returns a file name such as \"[X]Y.DIR.1\". */)
809 Lisp_Object directory
;
814 CHECK_STRING (directory
);
816 if (NILP (directory
))
819 /* If the file name has special constructs in it,
820 call the corresponding file handler. */
821 handler
= Ffind_file_name_handler (directory
, Qdirectory_file_name
);
823 return call2 (handler
, Qdirectory_file_name
, directory
);
826 /* 20 extra chars is insufficient for VMS, since we might perform a
827 logical name translation. an equivalence string can be up to 255
828 chars long, so grab that much extra space... - sss */
829 buf
= (char *) alloca (SBYTES (directory
) + 20 + 255);
831 buf
= (char *) alloca (SBYTES (directory
) + 20);
833 directory_file_name (SDATA (directory
), buf
);
834 return build_string (buf
);
837 static char make_temp_name_tbl
[64] =
839 'A','B','C','D','E','F','G','H',
840 'I','J','K','L','M','N','O','P',
841 'Q','R','S','T','U','V','W','X',
842 'Y','Z','a','b','c','d','e','f',
843 'g','h','i','j','k','l','m','n',
844 'o','p','q','r','s','t','u','v',
845 'w','x','y','z','0','1','2','3',
846 '4','5','6','7','8','9','-','_'
849 static unsigned make_temp_name_count
, make_temp_name_count_initialized_p
;
851 /* Value is a temporary file name starting with PREFIX, a string.
853 The Emacs process number forms part of the result, so there is
854 no danger of generating a name being used by another process.
855 In addition, this function makes an attempt to choose a name
856 which has no existing file. To make this work, PREFIX should be
857 an absolute file name.
859 BASE64_P non-zero means add the pid as 3 characters in base64
860 encoding. In this case, 6 characters will be added to PREFIX to
861 form the file name. Otherwise, if Emacs is running on a system
862 with long file names, add the pid as a decimal number.
864 This function signals an error if no unique file name could be
868 make_temp_name (prefix
, base64_p
)
875 unsigned char *p
, *data
;
879 CHECK_STRING (prefix
);
881 /* VAL is created by adding 6 characters to PREFIX. The first
882 three are the PID of this process, in base 64, and the second
883 three are incremented if the file already exists. This ensures
884 262144 unique file names per PID per PREFIX. */
886 pid
= (int) getpid ();
890 pidbuf
[0] = make_temp_name_tbl
[pid
& 63], pid
>>= 6;
891 pidbuf
[1] = make_temp_name_tbl
[pid
& 63], pid
>>= 6;
892 pidbuf
[2] = make_temp_name_tbl
[pid
& 63], pid
>>= 6;
897 #ifdef HAVE_LONG_FILE_NAMES
898 sprintf (pidbuf
, "%d", pid
);
899 pidlen
= strlen (pidbuf
);
901 pidbuf
[0] = make_temp_name_tbl
[pid
& 63], pid
>>= 6;
902 pidbuf
[1] = make_temp_name_tbl
[pid
& 63], pid
>>= 6;
903 pidbuf
[2] = make_temp_name_tbl
[pid
& 63], pid
>>= 6;
908 len
= SCHARS (prefix
);
909 val
= make_uninit_string (len
+ 3 + pidlen
);
911 bcopy(SDATA (prefix
), data
, len
);
914 bcopy (pidbuf
, p
, pidlen
);
917 /* Here we try to minimize useless stat'ing when this function is
918 invoked many times successively with the same PREFIX. We achieve
919 this by initializing count to a random value, and incrementing it
922 We don't want make-temp-name to be called while dumping,
923 because then make_temp_name_count_initialized_p would get set
924 and then make_temp_name_count would not be set when Emacs starts. */
926 if (!make_temp_name_count_initialized_p
)
928 make_temp_name_count
= (unsigned) time (NULL
);
929 make_temp_name_count_initialized_p
= 1;
935 unsigned num
= make_temp_name_count
;
937 p
[0] = make_temp_name_tbl
[num
& 63], num
>>= 6;
938 p
[1] = make_temp_name_tbl
[num
& 63], num
>>= 6;
939 p
[2] = make_temp_name_tbl
[num
& 63], num
>>= 6;
941 /* Poor man's congruential RN generator. Replace with
942 ++make_temp_name_count for debugging. */
943 make_temp_name_count
+= 25229;
944 make_temp_name_count
%= 225307;
946 if (stat (data
, &ignored
) < 0)
948 /* We want to return only if errno is ENOENT. */
952 /* The error here is dubious, but there is little else we
953 can do. The alternatives are to return nil, which is
954 as bad as (and in many cases worse than) throwing the
955 error, or to ignore the error, which will likely result
956 in looping through 225307 stat's, which is not only
957 dog-slow, but also useless since it will fallback to
958 the errow below, anyway. */
959 report_file_error ("Cannot create temporary name for prefix",
960 Fcons (prefix
, Qnil
));
965 error ("Cannot create temporary name for prefix `%s'",
971 DEFUN ("make-temp-name", Fmake_temp_name
, Smake_temp_name
, 1, 1, 0,
972 doc
: /* Generate temporary file name (string) starting with PREFIX (a string).
973 The Emacs process number forms part of the result,
974 so there is no danger of generating a name being used by another process.
976 In addition, this function makes an attempt to choose a name
977 which has no existing file. To make this work,
978 PREFIX should be an absolute file name.
980 There is a race condition between calling `make-temp-name' and creating the
981 file which opens all kinds of security holes. For that reason, you should
982 probably use `make-temp-file' instead, except in three circumstances:
984 * If you are creating the file in the user's home directory.
985 * If you are creating a directory rather than an ordinary file.
986 * If you are taking special precautions as `make-temp-file' does. */)
990 return make_temp_name (prefix
, 0);
995 DEFUN ("expand-file-name", Fexpand_file_name
, Sexpand_file_name
, 1, 2, 0,
996 doc
: /* Convert filename NAME to absolute, and canonicalize it.
997 Second arg DEFAULT-DIRECTORY is directory to start with if NAME is relative
998 (does not start with slash); if DEFAULT-DIRECTORY is nil or missing,
999 the current buffer's value of default-directory is used.
1000 File name components that are `.' are removed, and
1001 so are file name components followed by `..', along with the `..' itself;
1002 note that these simplifications are done without checking the resulting
1003 file names in the file system.
1004 An initial `~/' expands to your home directory.
1005 An initial `~USER/' expands to USER's home directory.
1006 See also the function `substitute-in-file-name'. */)
1007 (name
, default_directory
)
1008 Lisp_Object name
, default_directory
;
1012 register unsigned char *newdir
, *p
, *o
;
1014 unsigned char *target
;
1017 unsigned char * colon
= 0;
1018 unsigned char * close
= 0;
1019 unsigned char * slash
= 0;
1020 unsigned char * brack
= 0;
1021 int lbrack
= 0, rbrack
= 0;
1026 int collapse_newdir
= 1;
1030 Lisp_Object handler
;
1032 CHECK_STRING (name
);
1034 /* If the file name has special constructs in it,
1035 call the corresponding file handler. */
1036 handler
= Ffind_file_name_handler (name
, Qexpand_file_name
);
1037 if (!NILP (handler
))
1038 return call3 (handler
, Qexpand_file_name
, name
, default_directory
);
1040 /* Use the buffer's default-directory if DEFAULT_DIRECTORY is omitted. */
1041 if (NILP (default_directory
))
1042 default_directory
= current_buffer
->directory
;
1043 if (! STRINGP (default_directory
))
1046 /* "/" is not considered a root directory on DOS_NT, so using "/"
1047 here causes an infinite recursion in, e.g., the following:
1049 (let (default-directory)
1050 (expand-file-name "a"))
1052 To avoid this, we set default_directory to the root of the
1054 extern char *emacs_root_dir (void);
1056 default_directory
= build_string (emacs_root_dir ());
1058 default_directory
= build_string ("/");
1062 if (!NILP (default_directory
))
1064 handler
= Ffind_file_name_handler (default_directory
, Qexpand_file_name
);
1065 if (!NILP (handler
))
1066 return call3 (handler
, Qexpand_file_name
, name
, default_directory
);
1069 o
= SDATA (default_directory
);
1071 /* Make sure DEFAULT_DIRECTORY is properly expanded.
1072 It would be better to do this down below where we actually use
1073 default_directory. Unfortunately, calling Fexpand_file_name recursively
1074 could invoke GC, and the strings might be relocated. This would
1075 be annoying because we have pointers into strings lying around
1076 that would need adjusting, and people would add new pointers to
1077 the code and forget to adjust them, resulting in intermittent bugs.
1078 Putting this call here avoids all that crud.
1080 The EQ test avoids infinite recursion. */
1081 if (! NILP (default_directory
) && !EQ (default_directory
, name
)
1082 /* Save time in some common cases - as long as default_directory
1083 is not relative, it can be canonicalized with name below (if it
1084 is needed at all) without requiring it to be expanded now. */
1086 /* Detect MSDOS file names with drive specifiers. */
1087 && ! (IS_DRIVE (o
[0]) && IS_DEVICE_SEP (o
[1]) && IS_DIRECTORY_SEP (o
[2]))
1089 /* Detect Windows file names in UNC format. */
1090 && ! (IS_DIRECTORY_SEP (o
[0]) && IS_DIRECTORY_SEP (o
[1]))
1092 #else /* not DOS_NT */
1093 /* Detect Unix absolute file names (/... alone is not absolute on
1095 && ! (IS_DIRECTORY_SEP (o
[0]))
1096 #endif /* not DOS_NT */
1099 struct gcpro gcpro1
;
1102 default_directory
= Fexpand_file_name (default_directory
, Qnil
);
1107 /* Filenames on VMS are always upper case. */
1108 name
= Fupcase (name
);
1110 #ifdef FILE_SYSTEM_CASE
1111 name
= FILE_SYSTEM_CASE (name
);
1117 /* We will force directory separators to be either all \ or /, so make
1118 a local copy to modify, even if there ends up being no change. */
1119 nm
= strcpy (alloca (strlen (nm
) + 1), nm
);
1121 /* Note if special escape prefix is present, but remove for now. */
1122 if (nm
[0] == '/' && nm
[1] == ':')
1128 /* Find and remove drive specifier if present; this makes nm absolute
1129 even if the rest of the name appears to be relative. Only look for
1130 drive specifier at the beginning. */
1131 if (IS_DRIVE (nm
[0]) && IS_DEVICE_SEP (nm
[1]))
1138 /* If we see "c://somedir", we want to strip the first slash after the
1139 colon when stripping the drive letter. Otherwise, this expands to
1141 if (drive
&& IS_DIRECTORY_SEP (nm
[0]) && IS_DIRECTORY_SEP (nm
[1]))
1143 #endif /* WINDOWSNT */
1147 /* Discard any previous drive specifier if nm is now in UNC format. */
1148 if (IS_DIRECTORY_SEP (nm
[0]) && IS_DIRECTORY_SEP (nm
[1]))
1154 /* If nm is absolute, look for `/./' or `/../' or `//''sequences; if
1155 none are found, we can probably return right away. We will avoid
1156 allocating a new string if name is already fully expanded. */
1158 IS_DIRECTORY_SEP (nm
[0])
1160 && drive
&& !is_escaped
1163 && (drive
|| IS_DIRECTORY_SEP (nm
[1])) && !is_escaped
1170 /* If it turns out that the filename we want to return is just a
1171 suffix of FILENAME, we don't need to go through and edit
1172 things; we just need to construct a new string using data
1173 starting at the middle of FILENAME. If we set lose to a
1174 non-zero value, that means we've discovered that we can't do
1181 /* Since we know the name is absolute, we can assume that each
1182 element starts with a "/". */
1184 /* "." and ".." are hairy. */
1185 if (IS_DIRECTORY_SEP (p
[0])
1187 && (IS_DIRECTORY_SEP (p
[2])
1189 || (p
[2] == '.' && (IS_DIRECTORY_SEP (p
[3])
1192 /* We want to replace multiple `/' in a row with a single
1195 && IS_DIRECTORY_SEP (p
[0])
1196 && IS_DIRECTORY_SEP (p
[1]))
1203 /* if dev:[dir]/, move nm to / */
1204 if (!slash
&& p
> nm
&& (brack
|| colon
)) {
1205 nm
= (brack
? brack
+ 1 : colon
+ 1);
1206 lbrack
= rbrack
= 0;
1214 /* VMS pre V4.4,convert '-'s in filenames. */
1215 if (lbrack
== rbrack
)
1217 if (dots
< 2) /* this is to allow negative version numbers */
1222 if (lbrack
> rbrack
&&
1223 ((p
[-1] == '.' || p
[-1] == '[' || p
[-1] == '<') &&
1224 (p
[1] == '.' || p
[1] == ']' || p
[1] == '>')))
1230 /* count open brackets, reset close bracket pointer */
1231 if (p
[0] == '[' || p
[0] == '<')
1232 lbrack
++, brack
= 0;
1233 /* count close brackets, set close bracket pointer */
1234 if (p
[0] == ']' || p
[0] == '>')
1235 rbrack
++, brack
= p
;
1236 /* detect ][ or >< */
1237 if ((p
[0] == ']' || p
[0] == '>') && (p
[1] == '[' || p
[1] == '<'))
1239 if ((p
[0] == ':' || p
[0] == ']' || p
[0] == '>') && p
[1] == '~')
1240 nm
= p
+ 1, lose
= 1;
1241 if (p
[0] == ':' && (colon
|| slash
))
1242 /* if dev1:[dir]dev2:, move nm to dev2: */
1248 /* if /name/dev:, move nm to dev: */
1251 /* if node::dev:, move colon following dev */
1252 else if (colon
&& colon
[-1] == ':')
1254 /* if dev1:dev2:, move nm to dev2: */
1255 else if (colon
&& colon
[-1] != ':')
1260 if (p
[0] == ':' && !colon
)
1266 if (lbrack
== rbrack
)
1269 else if (p
[0] == '.')
1277 if (index (nm
, '/'))
1278 return build_string (sys_translate_unix (nm
));
1281 /* Make sure directories are all separated with / or \ as
1282 desired, but avoid allocation of a new string when not
1284 CORRECT_DIR_SEPS (nm
);
1286 if (IS_DIRECTORY_SEP (nm
[1]))
1288 if (strcmp (nm
, SDATA (name
)) != 0)
1289 name
= build_string (nm
);
1293 /* drive must be set, so this is okay */
1294 if (strcmp (nm
- 2, SDATA (name
)) != 0)
1296 name
= make_string (nm
- 2, p
- nm
+ 2);
1297 SSET (name
, 0, DRIVE_LETTER (drive
));
1298 SSET (name
, 1, ':');
1301 #else /* not DOS_NT */
1302 if (nm
== SDATA (name
))
1304 return build_string (nm
);
1305 #endif /* not DOS_NT */
1309 /* At this point, nm might or might not be an absolute file name. We
1310 need to expand ~ or ~user if present, otherwise prefix nm with
1311 default_directory if nm is not absolute, and finally collapse /./
1312 and /foo/../ sequences.
1314 We set newdir to be the appropriate prefix if one is needed:
1315 - the relevant user directory if nm starts with ~ or ~user
1316 - the specified drive's working dir (DOS/NT only) if nm does not
1318 - the value of default_directory.
1320 Note that these prefixes are not guaranteed to be absolute (except
1321 for the working dir of a drive). Therefore, to ensure we always
1322 return an absolute name, if the final prefix is not absolute we
1323 append it to the current working directory. */
1327 if (nm
[0] == '~') /* prefix ~ */
1329 if (IS_DIRECTORY_SEP (nm
[1])
1333 || nm
[1] == 0) /* ~ by itself */
1335 if (!(newdir
= (unsigned char *) egetenv ("HOME")))
1336 newdir
= (unsigned char *) "";
1339 collapse_newdir
= 0;
1342 nm
++; /* Don't leave the slash in nm. */
1345 else /* ~user/filename */
1347 for (p
= nm
; *p
&& (!IS_DIRECTORY_SEP (*p
)
1352 o
= (unsigned char *) alloca (p
- nm
+ 1);
1353 bcopy ((char *) nm
, o
, p
- nm
);
1356 pw
= (struct passwd
*) getpwnam (o
+ 1);
1359 newdir
= (unsigned char *) pw
-> pw_dir
;
1361 nm
= p
+ 1; /* skip the terminator */
1365 collapse_newdir
= 0;
1370 /* If we don't find a user of that name, leave the name
1371 unchanged; don't move nm forward to p. */
1376 /* On DOS and Windows, nm is absolute if a drive name was specified;
1377 use the drive's current directory as the prefix if needed. */
1378 if (!newdir
&& drive
)
1380 /* Get default directory if needed to make nm absolute. */
1381 if (!IS_DIRECTORY_SEP (nm
[0]))
1383 newdir
= alloca (MAXPATHLEN
+ 1);
1384 if (!getdefdir (toupper (drive
) - 'A' + 1, newdir
))
1389 /* Either nm starts with /, or drive isn't mounted. */
1390 newdir
= alloca (4);
1391 newdir
[0] = DRIVE_LETTER (drive
);
1399 /* Finally, if no prefix has been specified and nm is not absolute,
1400 then it must be expanded relative to default_directory. */
1404 /* /... alone is not absolute on DOS and Windows. */
1405 && !IS_DIRECTORY_SEP (nm
[0])
1408 && !(IS_DIRECTORY_SEP (nm
[0]) && IS_DIRECTORY_SEP (nm
[1]))
1415 newdir
= SDATA (default_directory
);
1417 /* Note if special escape prefix is present, but remove for now. */
1418 if (newdir
[0] == '/' && newdir
[1] == ':')
1429 /* First ensure newdir is an absolute name. */
1431 /* Detect MSDOS file names with drive specifiers. */
1432 ! (IS_DRIVE (newdir
[0])
1433 && IS_DEVICE_SEP (newdir
[1]) && IS_DIRECTORY_SEP (newdir
[2]))
1435 /* Detect Windows file names in UNC format. */
1436 && ! (IS_DIRECTORY_SEP (newdir
[0]) && IS_DIRECTORY_SEP (newdir
[1]))
1440 /* Effectively, let newdir be (expand-file-name newdir cwd).
1441 Because of the admonition against calling expand-file-name
1442 when we have pointers into lisp strings, we accomplish this
1443 indirectly by prepending newdir to nm if necessary, and using
1444 cwd (or the wd of newdir's drive) as the new newdir. */
1446 if (IS_DRIVE (newdir
[0]) && newdir
[1] == ':')
1451 if (!IS_DIRECTORY_SEP (nm
[0]))
1453 char * tmp
= alloca (strlen (newdir
) + strlen (nm
) + 2);
1454 file_name_as_directory (tmp
, newdir
);
1458 newdir
= alloca (MAXPATHLEN
+ 1);
1461 if (!getdefdir (toupper (drive
) - 'A' + 1, newdir
))
1468 /* Strip off drive name from prefix, if present. */
1469 if (IS_DRIVE (newdir
[0]) && newdir
[1] == ':')
1475 /* Keep only a prefix from newdir if nm starts with slash
1476 (//server/share for UNC, nothing otherwise). */
1477 if (IS_DIRECTORY_SEP (nm
[0]) && collapse_newdir
)
1480 if (IS_DIRECTORY_SEP (newdir
[0]) && IS_DIRECTORY_SEP (newdir
[1]))
1482 newdir
= strcpy (alloca (strlen (newdir
) + 1), newdir
);
1484 while (*p
&& !IS_DIRECTORY_SEP (*p
)) p
++;
1486 while (*p
&& !IS_DIRECTORY_SEP (*p
)) p
++;
1498 /* Get rid of any slash at the end of newdir, unless newdir is
1499 just / or // (an incomplete UNC name). */
1500 length
= strlen (newdir
);
1501 if (length
> 1 && IS_DIRECTORY_SEP (newdir
[length
- 1])
1503 && !(length
== 2 && IS_DIRECTORY_SEP (newdir
[0]))
1507 unsigned char *temp
= (unsigned char *) alloca (length
);
1508 bcopy (newdir
, temp
, length
- 1);
1509 temp
[length
- 1] = 0;
1517 /* Now concatenate the directory and name to new space in the stack frame */
1518 tlen
+= strlen (nm
) + 1;
1520 /* Reserve space for drive specifier and escape prefix, since either
1521 or both may need to be inserted. (The Microsoft x86 compiler
1522 produces incorrect code if the following two lines are combined.) */
1523 target
= (unsigned char *) alloca (tlen
+ 4);
1525 #else /* not DOS_NT */
1526 target
= (unsigned char *) alloca (tlen
);
1527 #endif /* not DOS_NT */
1533 if (nm
[0] == 0 || IS_DIRECTORY_SEP (nm
[0]))
1536 /* If newdir is effectively "C:/", then the drive letter will have
1537 been stripped and newdir will be "/". Concatenating with an
1538 absolute directory in nm produces "//", which will then be
1539 incorrectly treated as a network share. Ignore newdir in
1540 this case (keeping the drive letter). */
1541 if (!(drive
&& nm
[0] && IS_DIRECTORY_SEP (newdir
[0])
1542 && newdir
[1] == '\0'))
1544 strcpy (target
, newdir
);
1548 file_name_as_directory (target
, newdir
);
1551 strcat (target
, nm
);
1553 if (index (target
, '/'))
1554 strcpy (target
, sys_translate_unix (target
));
1557 /* ASSERT (IS_DIRECTORY_SEP (target[0])) if not VMS */
1559 /* Now canonicalize by removing `//', `/.' and `/foo/..' if they
1568 if (*p
!= ']' && *p
!= '>' && *p
!= '-')
1574 else if ((p
[0] == ']' || p
[0] == '>') && p
[0] == p
[1] + 2)
1575 /* brackets are offset from each other by 2 */
1578 if (*p
!= '.' && *p
!= '-' && o
[-1] != '.')
1579 /* convert [foo][bar] to [bar] */
1580 while (o
[-1] != '[' && o
[-1] != '<')
1582 else if (*p
== '-' && *o
!= '.')
1585 else if (p
[0] == '-' && o
[-1] == '.' &&
1586 (p
[1] == '.' || p
[1] == ']' || p
[1] == '>'))
1587 /* flush .foo.- ; leave - if stopped by '[' or '<' */
1591 while (o
[-1] != '.' && o
[-1] != '[' && o
[-1] != '<');
1592 if (p
[1] == '.') /* foo.-.bar ==> bar. */
1594 else if (o
[-1] == '.') /* '.foo.-]' ==> ']' */
1596 /* else [foo.-] ==> [-] */
1602 o
[-1] != '[' && o
[-1] != '<' && o
[-1] != '.' &&
1603 p
[1] != ']' && p
[1] != '>' && p
[1] != '.')
1609 if (!IS_DIRECTORY_SEP (*p
))
1613 else if (IS_DIRECTORY_SEP (p
[0])
1615 && (IS_DIRECTORY_SEP (p
[2])
1618 /* If "/." is the entire filename, keep the "/". Otherwise,
1619 just delete the whole "/.". */
1620 if (o
== target
&& p
[2] == '\0')
1624 else if (IS_DIRECTORY_SEP (p
[0]) && p
[1] == '.' && p
[2] == '.'
1625 /* `/../' is the "superroot" on certain file systems. */
1627 && (IS_DIRECTORY_SEP (p
[3]) || p
[3] == 0))
1629 while (o
!= target
&& (--o
) && !IS_DIRECTORY_SEP (*o
))
1631 /* Keep initial / only if this is the whole name. */
1632 if (o
== target
&& IS_ANY_SEP (*o
) && p
[3] == 0)
1637 && IS_DIRECTORY_SEP (p
[0]) && IS_DIRECTORY_SEP (p
[1]))
1639 /* Collapse multiple `/' in a row. */
1641 while (IS_DIRECTORY_SEP (*p
))
1648 #endif /* not VMS */
1652 /* At last, set drive name. */
1654 /* Except for network file name. */
1655 if (!(IS_DIRECTORY_SEP (target
[0]) && IS_DIRECTORY_SEP (target
[1])))
1656 #endif /* WINDOWSNT */
1658 if (!drive
) abort ();
1660 target
[0] = DRIVE_LETTER (drive
);
1663 /* Reinsert the escape prefix if required. */
1670 CORRECT_DIR_SEPS (target
);
1673 return make_string (target
, o
- target
);
1677 /* PLEASE DO NOT DELETE THIS COMMENTED-OUT VERSION!
1678 This is the old version of expand-file-name, before it was thoroughly
1679 rewritten for Emacs 10.31. We leave this version here commented-out,
1680 because the code is very complex and likely to have subtle bugs. If
1681 bugs _are_ found, it might be of interest to look at the old code and
1682 see what did it do in the relevant situation.
1684 Don't remove this code: it's true that it will be accessible via CVS,
1685 but a few years from deletion, people will forget it is there. */
1687 /* Changed this DEFUN to a DEAFUN, so as not to confuse `make-docfile'. */
1688 DEAFUN ("expand-file-name", Fexpand_file_name
, Sexpand_file_name
, 1, 2, 0,
1689 "Convert FILENAME to absolute, and canonicalize it.\n\
1690 Second arg DEFAULT is directory to start with if FILENAME is relative\n\
1691 (does not start with slash); if DEFAULT is nil or missing,\n\
1692 the current buffer's value of default-directory is used.\n\
1693 Filenames containing `.' or `..' as components are simplified;\n\
1694 initial `~/' expands to your home directory.\n\
1695 See also the function `substitute-in-file-name'.")
1697 Lisp_Object name
, defalt
;
1701 register unsigned char *newdir
, *p
, *o
;
1703 unsigned char *target
;
1707 unsigned char * colon
= 0;
1708 unsigned char * close
= 0;
1709 unsigned char * slash
= 0;
1710 unsigned char * brack
= 0;
1711 int lbrack
= 0, rbrack
= 0;
1715 CHECK_STRING (name
);
1718 /* Filenames on VMS are always upper case. */
1719 name
= Fupcase (name
);
1724 /* If nm is absolute, flush ...// and detect /./ and /../.
1725 If no /./ or /../ we can return right away. */
1737 if (p
[0] == '/' && p
[1] == '/'
1739 /* // at start of filename is meaningful on Apollo system. */
1744 if (p
[0] == '/' && p
[1] == '~')
1745 nm
= p
+ 1, lose
= 1;
1746 if (p
[0] == '/' && p
[1] == '.'
1747 && (p
[2] == '/' || p
[2] == 0
1748 || (p
[2] == '.' && (p
[3] == '/' || p
[3] == 0))))
1754 /* if dev:[dir]/, move nm to / */
1755 if (!slash
&& p
> nm
&& (brack
|| colon
)) {
1756 nm
= (brack
? brack
+ 1 : colon
+ 1);
1757 lbrack
= rbrack
= 0;
1765 /* VMS pre V4.4,convert '-'s in filenames. */
1766 if (lbrack
== rbrack
)
1768 if (dots
< 2) /* this is to allow negative version numbers */
1773 if (lbrack
> rbrack
&&
1774 ((p
[-1] == '.' || p
[-1] == '[' || p
[-1] == '<') &&
1775 (p
[1] == '.' || p
[1] == ']' || p
[1] == '>')))
1781 /* count open brackets, reset close bracket pointer */
1782 if (p
[0] == '[' || p
[0] == '<')
1783 lbrack
++, brack
= 0;
1784 /* count close brackets, set close bracket pointer */
1785 if (p
[0] == ']' || p
[0] == '>')
1786 rbrack
++, brack
= p
;
1787 /* detect ][ or >< */
1788 if ((p
[0] == ']' || p
[0] == '>') && (p
[1] == '[' || p
[1] == '<'))
1790 if ((p
[0] == ':' || p
[0] == ']' || p
[0] == '>') && p
[1] == '~')
1791 nm
= p
+ 1, lose
= 1;
1792 if (p
[0] == ':' && (colon
|| slash
))
1793 /* if dev1:[dir]dev2:, move nm to dev2: */
1799 /* If /name/dev:, move nm to dev: */
1802 /* If node::dev:, move colon following dev */
1803 else if (colon
&& colon
[-1] == ':')
1805 /* If dev1:dev2:, move nm to dev2: */
1806 else if (colon
&& colon
[-1] != ':')
1811 if (p
[0] == ':' && !colon
)
1817 if (lbrack
== rbrack
)
1820 else if (p
[0] == '.')
1828 if (index (nm
, '/'))
1829 return build_string (sys_translate_unix (nm
));
1831 if (nm
== SDATA (name
))
1833 return build_string (nm
);
1837 /* Now determine directory to start with and put it in NEWDIR */
1841 if (nm
[0] == '~') /* prefix ~ */
1846 || nm
[1] == 0)/* ~/filename */
1848 if (!(newdir
= (unsigned char *) egetenv ("HOME")))
1849 newdir
= (unsigned char *) "";
1852 nm
++; /* Don't leave the slash in nm. */
1855 else /* ~user/filename */
1857 /* Get past ~ to user */
1858 unsigned char *user
= nm
+ 1;
1859 /* Find end of name. */
1860 unsigned char *ptr
= (unsigned char *) index (user
, '/');
1861 int len
= ptr
? ptr
- user
: strlen (user
);
1863 unsigned char *ptr1
= index (user
, ':');
1864 if (ptr1
!= 0 && ptr1
- user
< len
)
1867 /* Copy the user name into temp storage. */
1868 o
= (unsigned char *) alloca (len
+ 1);
1869 bcopy ((char *) user
, o
, len
);
1872 /* Look up the user name. */
1873 pw
= (struct passwd
*) getpwnam (o
+ 1);
1875 error ("\"%s\" isn't a registered user", o
+ 1);
1877 newdir
= (unsigned char *) pw
->pw_dir
;
1879 /* Discard the user name from NM. */
1886 #endif /* not VMS */
1890 defalt
= current_buffer
->directory
;
1891 CHECK_STRING (defalt
);
1892 newdir
= SDATA (defalt
);
1895 /* Now concatenate the directory and name to new space in the stack frame */
1897 tlen
= (newdir
? strlen (newdir
) + 1 : 0) + strlen (nm
) + 1;
1898 target
= (unsigned char *) alloca (tlen
);
1904 if (nm
[0] == 0 || nm
[0] == '/')
1905 strcpy (target
, newdir
);
1908 file_name_as_directory (target
, newdir
);
1911 strcat (target
, nm
);
1913 if (index (target
, '/'))
1914 strcpy (target
, sys_translate_unix (target
));
1917 /* Now canonicalize by removing /. and /foo/.. if they appear */
1925 if (*p
!= ']' && *p
!= '>' && *p
!= '-')
1931 else if ((p
[0] == ']' || p
[0] == '>') && p
[0] == p
[1] + 2)
1932 /* brackets are offset from each other by 2 */
1935 if (*p
!= '.' && *p
!= '-' && o
[-1] != '.')
1936 /* convert [foo][bar] to [bar] */
1937 while (o
[-1] != '[' && o
[-1] != '<')
1939 else if (*p
== '-' && *o
!= '.')
1942 else if (p
[0] == '-' && o
[-1] == '.' &&
1943 (p
[1] == '.' || p
[1] == ']' || p
[1] == '>'))
1944 /* flush .foo.- ; leave - if stopped by '[' or '<' */
1948 while (o
[-1] != '.' && o
[-1] != '[' && o
[-1] != '<');
1949 if (p
[1] == '.') /* foo.-.bar ==> bar. */
1951 else if (o
[-1] == '.') /* '.foo.-]' ==> ']' */
1953 /* else [foo.-] ==> [-] */
1959 o
[-1] != '[' && o
[-1] != '<' && o
[-1] != '.' &&
1960 p
[1] != ']' && p
[1] != '>' && p
[1] != '.')
1970 else if (!strncmp (p
, "//", 2)
1972 /* // at start of filename is meaningful in Apollo system. */
1980 else if (p
[0] == '/' && p
[1] == '.' &&
1981 (p
[2] == '/' || p
[2] == 0))
1983 else if (!strncmp (p
, "/..", 3)
1984 /* `/../' is the "superroot" on certain file systems. */
1986 && (p
[3] == '/' || p
[3] == 0))
1988 while (o
!= target
&& *--o
!= '/')
1991 if (o
== target
+ 1 && o
[-1] == '/' && o
[0] == '/')
1995 if (o
== target
&& *o
== '/')
2003 #endif /* not VMS */
2006 return make_string (target
, o
- target
);
2010 DEFUN ("substitute-in-file-name", Fsubstitute_in_file_name
,
2011 Ssubstitute_in_file_name
, 1, 1, 0,
2012 doc
: /* Substitute environment variables referred to in FILENAME.
2013 `$FOO' where FOO is an environment variable name means to substitute
2014 the value of that variable. The variable name should be terminated
2015 with a character not a letter, digit or underscore; otherwise, enclose
2016 the entire variable name in braces.
2017 If `/~' appears, all of FILENAME through that `/' is discarded.
2019 On VMS, `$' substitution is not done; this function does little and only
2020 duplicates what `expand-file-name' does. */)
2022 Lisp_Object filename
;
2026 register unsigned char *s
, *p
, *o
, *x
, *endp
;
2027 unsigned char *target
= NULL
;
2029 int substituted
= 0;
2032 Lisp_Object handler
;
2034 CHECK_STRING (filename
);
2036 /* If the file name has special constructs in it,
2037 call the corresponding file handler. */
2038 handler
= Ffind_file_name_handler (filename
, Qsubstitute_in_file_name
);
2039 if (!NILP (handler
))
2040 return call2 (handler
, Qsubstitute_in_file_name
, filename
);
2042 nm
= SDATA (filename
);
2044 nm
= strcpy (alloca (strlen (nm
) + 1), nm
);
2045 CORRECT_DIR_SEPS (nm
);
2046 substituted
= (strcmp (nm
, SDATA (filename
)) != 0);
2048 endp
= nm
+ SBYTES (filename
);
2050 /* If /~ or // appears, discard everything through first slash. */
2052 for (p
= nm
; p
!= endp
; p
++)
2055 #if defined (APOLLO) || defined (WINDOWSNT)
2056 /* // at start of file name is meaningful in Apollo and
2057 WindowsNT systems. */
2058 || (IS_DIRECTORY_SEP (p
[0]) && p
- 1 != nm
)
2059 #else /* not (APOLLO || WINDOWSNT) */
2060 || IS_DIRECTORY_SEP (p
[0])
2061 #endif /* not (APOLLO || WINDOWSNT) */
2066 || p
[-1] == ':' || p
[-1] == ']' || p
[-1] == '>'
2068 || IS_DIRECTORY_SEP (p
[-1])))
2070 for (s
= p
; *s
&& (!IS_DIRECTORY_SEP (*s
)
2075 if (p
[0] == '~' && s
> p
+ 1) /* we've got "/~something/" */
2077 o
= (unsigned char *) alloca (s
- p
+ 1);
2078 bcopy ((char *) p
, o
, s
- p
);
2081 pw
= (struct passwd
*) getpwnam (o
+ 1);
2083 /* If we have ~/ or ~user and `user' exists, discard
2084 everything up to ~. But if `user' does not exist, leave
2085 ~user alone, it might be a literal file name. */
2086 if (IS_DIRECTORY_SEP (p
[0]) || s
== p
+ 1 || pw
)
2093 /* see comment in expand-file-name about drive specifiers */
2094 else if (IS_DRIVE (p
[0]) && p
[1] == ':'
2095 && p
> nm
&& IS_DIRECTORY_SEP (p
[-1]))
2104 return build_string (nm
);
2107 /* See if any variables are substituted into the string
2108 and find the total length of their values in `total' */
2110 for (p
= nm
; p
!= endp
;)
2120 /* "$$" means a single "$" */
2129 while (p
!= endp
&& *p
!= '}') p
++;
2130 if (*p
!= '}') goto missingclose
;
2136 while (p
!= endp
&& (isalnum (*p
) || *p
== '_')) p
++;
2140 /* Copy out the variable name */
2141 target
= (unsigned char *) alloca (s
- o
+ 1);
2142 strncpy (target
, o
, s
- o
);
2145 strupr (target
); /* $home == $HOME etc. */
2148 /* Get variable value */
2149 o
= (unsigned char *) egetenv (target
);
2152 total
+= strlen (o
);
2162 /* If substitution required, recopy the string and do it */
2163 /* Make space in stack frame for the new copy */
2164 xnm
= (unsigned char *) alloca (SBYTES (filename
) + total
+ 1);
2167 /* Copy the rest of the name through, replacing $ constructs with values */
2184 while (p
!= endp
&& *p
!= '}') p
++;
2185 if (*p
!= '}') goto missingclose
;
2191 while (p
!= endp
&& (isalnum (*p
) || *p
== '_')) p
++;
2195 /* Copy out the variable name */
2196 target
= (unsigned char *) alloca (s
- o
+ 1);
2197 strncpy (target
, o
, s
- o
);
2200 strupr (target
); /* $home == $HOME etc. */
2203 /* Get variable value */
2204 o
= (unsigned char *) egetenv (target
);
2208 strcpy (x
, target
); x
+= strlen (target
);
2210 else if (STRING_MULTIBYTE (filename
))
2212 /* If the original string is multibyte,
2213 convert what we substitute into multibyte. */
2216 int c
= unibyte_char_to_multibyte (*o
++);
2217 x
+= CHAR_STRING (c
, x
);
2229 /* If /~ or // appears, discard everything through first slash. */
2231 for (p
= xnm
; p
!= x
; p
++)
2233 #if defined (APOLLO) || defined (WINDOWSNT)
2234 || (IS_DIRECTORY_SEP (p
[0]) && p
- 1 != xnm
)
2235 #else /* not (APOLLO || WINDOWSNT) */
2236 || IS_DIRECTORY_SEP (p
[0])
2237 #endif /* not (APOLLO || WINDOWSNT) */
2239 && p
!= xnm
&& IS_DIRECTORY_SEP (p
[-1]))
2242 else if (IS_DRIVE (p
[0]) && p
[1] == ':'
2243 && p
> xnm
&& IS_DIRECTORY_SEP (p
[-1]))
2247 if (STRING_MULTIBYTE (filename
))
2248 return make_string (xnm
, x
- xnm
);
2249 return make_unibyte_string (xnm
, x
- xnm
);
2252 error ("Bad format environment-variable substitution");
2254 error ("Missing \"}\" in environment-variable substitution");
2256 error ("Substituting nonexistent environment variable \"%s\"", target
);
2259 #endif /* not VMS */
2263 /* A slightly faster and more convenient way to get
2264 (directory-file-name (expand-file-name FOO)). */
2267 expand_and_dir_to_file (filename
, defdir
)
2268 Lisp_Object filename
, defdir
;
2270 register Lisp_Object absname
;
2272 absname
= Fexpand_file_name (filename
, defdir
);
2275 register int c
= SREF (absname
, SBYTES (absname
) - 1);
2276 if (c
== ':' || c
== ']' || c
== '>')
2277 absname
= Fdirectory_file_name (absname
);
2280 /* Remove final slash, if any (unless this is the root dir).
2281 stat behaves differently depending! */
2282 if (SCHARS (absname
) > 1
2283 && IS_DIRECTORY_SEP (SREF (absname
, SBYTES (absname
) - 1))
2284 && !IS_DEVICE_SEP (SREF (absname
, SBYTES (absname
)-2)))
2285 /* We cannot take shortcuts; they might be wrong for magic file names. */
2286 absname
= Fdirectory_file_name (absname
);
2291 /* Signal an error if the file ABSNAME already exists.
2292 If INTERACTIVE is nonzero, ask the user whether to proceed,
2293 and bypass the error if the user says to go ahead.
2294 QUERYSTRING is a name for the action that is being considered
2297 *STATPTR is used to store the stat information if the file exists.
2298 If the file does not exist, STATPTR->st_mode is set to 0.
2299 If STATPTR is null, we don't store into it.
2301 If QUICK is nonzero, we ask for y or n, not yes or no. */
2304 barf_or_query_if_file_exists (absname
, querystring
, interactive
, statptr
, quick
)
2305 Lisp_Object absname
;
2306 unsigned char *querystring
;
2308 struct stat
*statptr
;
2311 register Lisp_Object tem
, encoded_filename
;
2312 struct stat statbuf
;
2313 struct gcpro gcpro1
;
2315 encoded_filename
= ENCODE_FILE (absname
);
2317 /* stat is a good way to tell whether the file exists,
2318 regardless of what access permissions it has. */
2319 if (stat (SDATA (encoded_filename
), &statbuf
) >= 0)
2322 Fsignal (Qfile_already_exists
,
2323 Fcons (build_string ("File already exists"),
2324 Fcons (absname
, Qnil
)));
2326 tem
= format1 ("File %s already exists; %s anyway? ",
2327 SDATA (absname
), querystring
);
2329 tem
= Fy_or_n_p (tem
);
2331 tem
= do_yes_or_no_p (tem
);
2334 Fsignal (Qfile_already_exists
,
2335 Fcons (build_string ("File already exists"),
2336 Fcons (absname
, Qnil
)));
2343 statptr
->st_mode
= 0;
2348 DEFUN ("copy-file", Fcopy_file
, Scopy_file
, 2, 4,
2349 "fCopy file: \nFCopy %s to file: \np\nP",
2350 doc
: /* Copy FILE to NEWNAME. Both args must be strings.
2351 If NEWNAME names a directory, copy FILE there.
2352 Signals a `file-already-exists' error if file NEWNAME already exists,
2353 unless a third argument OK-IF-ALREADY-EXISTS is supplied and non-nil.
2354 A number as third arg means request confirmation if NEWNAME already exists.
2355 This is what happens in interactive use with M-x.
2356 Fourth arg KEEP-TIME non-nil means give the new file the same
2357 last-modified time as the old one. (This works on only some systems.)
2358 A prefix arg makes KEEP-TIME non-nil. */)
2359 (file
, newname
, ok_if_already_exists
, keep_time
)
2360 Lisp_Object file
, newname
, ok_if_already_exists
, keep_time
;
2363 char buf
[16 * 1024];
2364 struct stat st
, out_st
;
2365 Lisp_Object handler
;
2366 struct gcpro gcpro1
, gcpro2
, gcpro3
, gcpro4
;
2367 int count
= SPECPDL_INDEX ();
2368 int input_file_statable_p
;
2369 Lisp_Object encoded_file
, encoded_newname
;
2371 encoded_file
= encoded_newname
= Qnil
;
2372 GCPRO4 (file
, newname
, encoded_file
, encoded_newname
);
2373 CHECK_STRING (file
);
2374 CHECK_STRING (newname
);
2376 if (!NILP (Ffile_directory_p (newname
)))
2377 newname
= Fexpand_file_name (file
, newname
);
2379 newname
= Fexpand_file_name (newname
, Qnil
);
2381 file
= Fexpand_file_name (file
, Qnil
);
2383 /* If the input file name has special constructs in it,
2384 call the corresponding file handler. */
2385 handler
= Ffind_file_name_handler (file
, Qcopy_file
);
2386 /* Likewise for output file name. */
2388 handler
= Ffind_file_name_handler (newname
, Qcopy_file
);
2389 if (!NILP (handler
))
2390 RETURN_UNGCPRO (call5 (handler
, Qcopy_file
, file
, newname
,
2391 ok_if_already_exists
, keep_time
));
2393 encoded_file
= ENCODE_FILE (file
);
2394 encoded_newname
= ENCODE_FILE (newname
);
2396 if (NILP (ok_if_already_exists
)
2397 || INTEGERP (ok_if_already_exists
))
2398 barf_or_query_if_file_exists (encoded_newname
, "copy to it",
2399 INTEGERP (ok_if_already_exists
), &out_st
, 0);
2400 else if (stat (SDATA (encoded_newname
), &out_st
) < 0)
2404 if (!CopyFile (SDATA (encoded_file
),
2405 SDATA (encoded_newname
),
2407 report_file_error ("Copying file", Fcons (file
, Fcons (newname
, Qnil
)));
2408 else if (!NILP (keep_time
))
2414 EMACS_GET_TIME (now
);
2415 filename
= SDATA (encoded_newname
);
2417 /* Ensure file is writable while its modified time is set. */
2418 attributes
= GetFileAttributes (filename
);
2419 SetFileAttributes (filename
, attributes
& ~FILE_ATTRIBUTE_READONLY
);
2420 if (set_file_times (filename
, now
, now
))
2422 /* Restore original attributes. */
2423 SetFileAttributes (filename
, attributes
);
2424 Fsignal (Qfile_date_error
,
2425 Fcons (build_string ("Cannot set file date"),
2426 Fcons (newname
, Qnil
)));
2428 /* Restore original attributes. */
2429 SetFileAttributes (filename
, attributes
);
2431 #else /* not WINDOWSNT */
2432 ifd
= emacs_open (SDATA (encoded_file
), O_RDONLY
, 0);
2434 report_file_error ("Opening input file", Fcons (file
, Qnil
));
2436 record_unwind_protect (close_file_unwind
, make_number (ifd
));
2438 /* We can only copy regular files and symbolic links. Other files are not
2440 input_file_statable_p
= (fstat (ifd
, &st
) >= 0);
2442 #if !defined (DOS_NT) || __DJGPP__ > 1
2443 if (out_st
.st_mode
!= 0
2444 && st
.st_dev
== out_st
.st_dev
&& st
.st_ino
== out_st
.st_ino
)
2447 report_file_error ("Input and output files are the same",
2448 Fcons (file
, Fcons (newname
, Qnil
)));
2452 #if defined (S_ISREG) && defined (S_ISLNK)
2453 if (input_file_statable_p
)
2455 if (!(S_ISREG (st
.st_mode
)) && !(S_ISLNK (st
.st_mode
)))
2457 #if defined (EISDIR)
2458 /* Get a better looking error message. */
2461 report_file_error ("Non-regular file", Fcons (file
, Qnil
));
2464 #endif /* S_ISREG && S_ISLNK */
2467 /* Create the copy file with the same record format as the input file */
2468 ofd
= sys_creat (SDATA (encoded_newname
), 0666, ifd
);
2471 /* System's default file type was set to binary by _fmode in emacs.c. */
2472 ofd
= creat (SDATA (encoded_newname
), S_IREAD
| S_IWRITE
);
2473 #else /* not MSDOS */
2474 ofd
= creat (SDATA (encoded_newname
), 0666);
2475 #endif /* not MSDOS */
2478 report_file_error ("Opening output file", Fcons (newname
, Qnil
));
2480 record_unwind_protect (close_file_unwind
, make_number (ofd
));
2484 while ((n
= emacs_read (ifd
, buf
, sizeof buf
)) > 0)
2485 if (emacs_write (ofd
, buf
, n
) != n
)
2486 report_file_error ("I/O error", Fcons (newname
, Qnil
));
2489 /* Closing the output clobbers the file times on some systems. */
2490 if (emacs_close (ofd
) < 0)
2491 report_file_error ("I/O error", Fcons (newname
, Qnil
));
2493 if (input_file_statable_p
)
2495 if (!NILP (keep_time
))
2497 EMACS_TIME atime
, mtime
;
2498 EMACS_SET_SECS_USECS (atime
, st
.st_atime
, 0);
2499 EMACS_SET_SECS_USECS (mtime
, st
.st_mtime
, 0);
2500 if (set_file_times (SDATA (encoded_newname
),
2502 Fsignal (Qfile_date_error
,
2503 Fcons (build_string ("Cannot set file date"),
2504 Fcons (newname
, Qnil
)));
2507 chmod (SDATA (encoded_newname
), st
.st_mode
& 07777);
2509 #if defined (__DJGPP__) && __DJGPP__ > 1
2510 /* In DJGPP v2.0 and later, fstat usually returns true file mode bits,
2511 and if it can't, it tells so. Otherwise, under MSDOS we usually
2512 get only the READ bit, which will make the copied file read-only,
2513 so it's better not to chmod at all. */
2514 if ((_djstat_flags
& _STFAIL_WRITEBIT
) == 0)
2515 chmod (SDATA (encoded_newname
), st
.st_mode
& 07777);
2516 #endif /* DJGPP version 2 or newer */
2521 #endif /* WINDOWSNT */
2523 /* Discard the unwind protects. */
2524 specpdl_ptr
= specpdl
+ count
;
2530 DEFUN ("make-directory-internal", Fmake_directory_internal
,
2531 Smake_directory_internal
, 1, 1, 0,
2532 doc
: /* Create a new directory named DIRECTORY. */)
2534 Lisp_Object directory
;
2536 const unsigned char *dir
;
2537 Lisp_Object handler
;
2538 Lisp_Object encoded_dir
;
2540 CHECK_STRING (directory
);
2541 directory
= Fexpand_file_name (directory
, Qnil
);
2543 handler
= Ffind_file_name_handler (directory
, Qmake_directory_internal
);
2544 if (!NILP (handler
))
2545 return call2 (handler
, Qmake_directory_internal
, directory
);
2547 encoded_dir
= ENCODE_FILE (directory
);
2549 dir
= SDATA (encoded_dir
);
2552 if (mkdir (dir
) != 0)
2554 if (mkdir (dir
, 0777) != 0)
2556 report_file_error ("Creating directory", Flist (1, &directory
));
2561 DEFUN ("delete-directory", Fdelete_directory
, Sdelete_directory
, 1, 1, "FDelete directory: ",
2562 doc
: /* Delete the directory named DIRECTORY. */)
2564 Lisp_Object directory
;
2566 const unsigned char *dir
;
2567 Lisp_Object handler
;
2568 Lisp_Object encoded_dir
;
2570 CHECK_STRING (directory
);
2571 directory
= Fdirectory_file_name (Fexpand_file_name (directory
, Qnil
));
2573 handler
= Ffind_file_name_handler (directory
, Qdelete_directory
);
2574 if (!NILP (handler
))
2575 return call2 (handler
, Qdelete_directory
, directory
);
2577 encoded_dir
= ENCODE_FILE (directory
);
2579 dir
= SDATA (encoded_dir
);
2581 if (rmdir (dir
) != 0)
2582 report_file_error ("Removing directory", Flist (1, &directory
));
2587 DEFUN ("delete-file", Fdelete_file
, Sdelete_file
, 1, 1, "fDelete file: ",
2588 doc
: /* Delete file named FILENAME.
2589 If file has multiple names, it continues to exist with the other names. */)
2591 Lisp_Object filename
;
2593 Lisp_Object handler
;
2594 Lisp_Object encoded_file
;
2596 CHECK_STRING (filename
);
2597 filename
= Fexpand_file_name (filename
, Qnil
);
2599 handler
= Ffind_file_name_handler (filename
, Qdelete_file
);
2600 if (!NILP (handler
))
2601 return call2 (handler
, Qdelete_file
, filename
);
2603 encoded_file
= ENCODE_FILE (filename
);
2605 if (0 > unlink (SDATA (encoded_file
)))
2606 report_file_error ("Removing old name", Flist (1, &filename
));
2611 internal_delete_file_1 (ignore
)
2617 /* Delete file FILENAME, returning 1 if successful and 0 if failed. */
2620 internal_delete_file (filename
)
2621 Lisp_Object filename
;
2623 return NILP (internal_condition_case_1 (Fdelete_file
, filename
,
2624 Qt
, internal_delete_file_1
));
2627 DEFUN ("rename-file", Frename_file
, Srename_file
, 2, 3,
2628 "fRename file: \nFRename %s to file: \np",
2629 doc
: /* Rename FILE as NEWNAME. Both args strings.
2630 If file has names other than FILE, it continues to have those names.
2631 Signals a `file-already-exists' error if a file NEWNAME already exists
2632 unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.
2633 A number as third arg means request confirmation if NEWNAME already exists.
2634 This is what happens in interactive use with M-x. */)
2635 (file
, newname
, ok_if_already_exists
)
2636 Lisp_Object file
, newname
, ok_if_already_exists
;
2639 Lisp_Object args
[2];
2641 Lisp_Object handler
;
2642 struct gcpro gcpro1
, gcpro2
, gcpro3
, gcpro4
;
2643 Lisp_Object encoded_file
, encoded_newname
;
2645 encoded_file
= encoded_newname
= Qnil
;
2646 GCPRO4 (file
, newname
, encoded_file
, encoded_newname
);
2647 CHECK_STRING (file
);
2648 CHECK_STRING (newname
);
2649 file
= Fexpand_file_name (file
, Qnil
);
2650 newname
= Fexpand_file_name (newname
, Qnil
);
2652 /* If the file name has special constructs in it,
2653 call the corresponding file handler. */
2654 handler
= Ffind_file_name_handler (file
, Qrename_file
);
2656 handler
= Ffind_file_name_handler (newname
, Qrename_file
);
2657 if (!NILP (handler
))
2658 RETURN_UNGCPRO (call4 (handler
, Qrename_file
,
2659 file
, newname
, ok_if_already_exists
));
2661 encoded_file
= ENCODE_FILE (file
);
2662 encoded_newname
= ENCODE_FILE (newname
);
2665 /* If the file names are identical but for the case, don't ask for
2666 confirmation: they simply want to change the letter-case of the
2668 if (NILP (Fstring_equal (Fdowncase (file
), Fdowncase (newname
))))
2670 if (NILP (ok_if_already_exists
)
2671 || INTEGERP (ok_if_already_exists
))
2672 barf_or_query_if_file_exists (encoded_newname
, "rename to it",
2673 INTEGERP (ok_if_already_exists
), 0, 0);
2675 if (0 > rename (SDATA (encoded_file
), SDATA (encoded_newname
)))
2677 if (0 > link (SDATA (encoded_file
), SDATA (encoded_newname
))
2678 || 0 > unlink (SDATA (encoded_file
)))
2683 Fcopy_file (file
, newname
,
2684 /* We have already prompted if it was an integer,
2685 so don't have copy-file prompt again. */
2686 NILP (ok_if_already_exists
) ? Qnil
: Qt
, Qt
);
2687 Fdelete_file (file
);
2694 report_file_error ("Renaming", Flist (2, args
));
2697 report_file_error ("Renaming", Flist (2, &file
));
2704 DEFUN ("add-name-to-file", Fadd_name_to_file
, Sadd_name_to_file
, 2, 3,
2705 "fAdd name to file: \nFName to add to %s: \np",
2706 doc
: /* Give FILE additional name NEWNAME. Both args strings.
2707 Signals a `file-already-exists' error if a file NEWNAME already exists
2708 unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.
2709 A number as third arg means request confirmation if NEWNAME already exists.
2710 This is what happens in interactive use with M-x. */)
2711 (file
, newname
, ok_if_already_exists
)
2712 Lisp_Object file
, newname
, ok_if_already_exists
;
2715 Lisp_Object args
[2];
2717 Lisp_Object handler
;
2718 Lisp_Object encoded_file
, encoded_newname
;
2719 struct gcpro gcpro1
, gcpro2
, gcpro3
, gcpro4
;
2721 GCPRO4 (file
, newname
, encoded_file
, encoded_newname
);
2722 encoded_file
= encoded_newname
= Qnil
;
2723 CHECK_STRING (file
);
2724 CHECK_STRING (newname
);
2725 file
= Fexpand_file_name (file
, Qnil
);
2726 newname
= Fexpand_file_name (newname
, Qnil
);
2728 /* If the file name has special constructs in it,
2729 call the corresponding file handler. */
2730 handler
= Ffind_file_name_handler (file
, Qadd_name_to_file
);
2731 if (!NILP (handler
))
2732 RETURN_UNGCPRO (call4 (handler
, Qadd_name_to_file
, file
,
2733 newname
, ok_if_already_exists
));
2735 /* If the new name has special constructs in it,
2736 call the corresponding file handler. */
2737 handler
= Ffind_file_name_handler (newname
, Qadd_name_to_file
);
2738 if (!NILP (handler
))
2739 RETURN_UNGCPRO (call4 (handler
, Qadd_name_to_file
, file
,
2740 newname
, ok_if_already_exists
));
2742 encoded_file
= ENCODE_FILE (file
);
2743 encoded_newname
= ENCODE_FILE (newname
);
2745 if (NILP (ok_if_already_exists
)
2746 || INTEGERP (ok_if_already_exists
))
2747 barf_or_query_if_file_exists (encoded_newname
, "make it a new name",
2748 INTEGERP (ok_if_already_exists
), 0, 0);
2750 unlink (SDATA (newname
));
2751 if (0 > link (SDATA (encoded_file
), SDATA (encoded_newname
)))
2756 report_file_error ("Adding new name", Flist (2, args
));
2758 report_file_error ("Adding new name", Flist (2, &file
));
2767 DEFUN ("make-symbolic-link", Fmake_symbolic_link
, Smake_symbolic_link
, 2, 3,
2768 "FMake symbolic link to file: \nFMake symbolic link to file %s: \np",
2769 doc
: /* Make a symbolic link to FILENAME, named LINKNAME. Both args strings.
2770 Signals a `file-already-exists' error if a file LINKNAME already exists
2771 unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.
2772 A number as third arg means request confirmation if LINKNAME already exists.
2773 This happens for interactive use with M-x. */)
2774 (filename
, linkname
, ok_if_already_exists
)
2775 Lisp_Object filename
, linkname
, ok_if_already_exists
;
2778 Lisp_Object args
[2];
2780 Lisp_Object handler
;
2781 Lisp_Object encoded_filename
, encoded_linkname
;
2782 struct gcpro gcpro1
, gcpro2
, gcpro3
, gcpro4
;
2784 GCPRO4 (filename
, linkname
, encoded_filename
, encoded_linkname
);
2785 encoded_filename
= encoded_linkname
= Qnil
;
2786 CHECK_STRING (filename
);
2787 CHECK_STRING (linkname
);
2788 /* If the link target has a ~, we must expand it to get
2789 a truly valid file name. Otherwise, do not expand;
2790 we want to permit links to relative file names. */
2791 if (SREF (filename
, 0) == '~')
2792 filename
= Fexpand_file_name (filename
, Qnil
);
2793 linkname
= Fexpand_file_name (linkname
, Qnil
);
2795 /* If the file name has special constructs in it,
2796 call the corresponding file handler. */
2797 handler
= Ffind_file_name_handler (filename
, Qmake_symbolic_link
);
2798 if (!NILP (handler
))
2799 RETURN_UNGCPRO (call4 (handler
, Qmake_symbolic_link
, filename
,
2800 linkname
, ok_if_already_exists
));
2802 /* If the new link name has special constructs in it,
2803 call the corresponding file handler. */
2804 handler
= Ffind_file_name_handler (linkname
, Qmake_symbolic_link
);
2805 if (!NILP (handler
))
2806 RETURN_UNGCPRO (call4 (handler
, Qmake_symbolic_link
, filename
,
2807 linkname
, ok_if_already_exists
));
2809 encoded_filename
= ENCODE_FILE (filename
);
2810 encoded_linkname
= ENCODE_FILE (linkname
);
2812 if (NILP (ok_if_already_exists
)
2813 || INTEGERP (ok_if_already_exists
))
2814 barf_or_query_if_file_exists (encoded_linkname
, "make it a link",
2815 INTEGERP (ok_if_already_exists
), 0, 0);
2816 if (0 > symlink (SDATA (encoded_filename
),
2817 SDATA (encoded_linkname
)))
2819 /* If we didn't complain already, silently delete existing file. */
2820 if (errno
== EEXIST
)
2822 unlink (SDATA (encoded_linkname
));
2823 if (0 <= symlink (SDATA (encoded_filename
),
2824 SDATA (encoded_linkname
)))
2834 report_file_error ("Making symbolic link", Flist (2, args
));
2836 report_file_error ("Making symbolic link", Flist (2, &filename
));
2842 #endif /* S_IFLNK */
2846 DEFUN ("define-logical-name", Fdefine_logical_name
, Sdefine_logical_name
,
2847 2, 2, "sDefine logical name: \nsDefine logical name %s as: ",
2848 doc
: /* Define the job-wide logical name NAME to have the value STRING.
2849 If STRING is nil or a null string, the logical name NAME is deleted. */)
2854 CHECK_STRING (name
);
2856 delete_logical_name (SDATA (name
));
2859 CHECK_STRING (string
);
2861 if (SCHARS (string
) == 0)
2862 delete_logical_name (SDATA (name
));
2864 define_logical_name (SDATA (name
), SDATA (string
));
2873 DEFUN ("sysnetunam", Fsysnetunam
, Ssysnetunam
, 2, 2, 0,
2874 doc
: /* Open a network connection to PATH using LOGIN as the login string. */)
2876 Lisp_Object path
, login
;
2880 CHECK_STRING (path
);
2881 CHECK_STRING (login
);
2883 netresult
= netunam (SDATA (path
), SDATA (login
));
2885 if (netresult
== -1)
2890 #endif /* HPUX_NET */
2892 DEFUN ("file-name-absolute-p", Ffile_name_absolute_p
, Sfile_name_absolute_p
,
2894 doc
: /* Return t if file FILENAME specifies an absolute file name.
2895 On Unix, this is a name starting with a `/' or a `~'. */)
2897 Lisp_Object filename
;
2899 const unsigned char *ptr
;
2901 CHECK_STRING (filename
);
2902 ptr
= SDATA (filename
);
2903 if (IS_DIRECTORY_SEP (*ptr
) || *ptr
== '~'
2905 /* ??? This criterion is probably wrong for '<'. */
2906 || index (ptr
, ':') || index (ptr
, '<')
2907 || (*ptr
== '[' && (ptr
[1] != '-' || (ptr
[2] != '.' && ptr
[2] != ']'))
2911 || (IS_DRIVE (*ptr
) && ptr
[1] == ':' && IS_DIRECTORY_SEP (ptr
[2]))
2919 /* Return nonzero if file FILENAME exists and can be executed. */
2922 check_executable (filename
)
2926 int len
= strlen (filename
);
2929 if (stat (filename
, &st
) < 0)
2931 #if defined (WINDOWSNT) || (defined (MSDOS) && __DJGPP__ > 1)
2932 return ((st
.st_mode
& S_IEXEC
) != 0);
2934 return (S_ISREG (st
.st_mode
)
2936 && (stricmp ((suffix
= filename
+ len
-4), ".com") == 0
2937 || stricmp (suffix
, ".exe") == 0
2938 || stricmp (suffix
, ".bat") == 0)
2939 || (st
.st_mode
& S_IFMT
) == S_IFDIR
);
2940 #endif /* not WINDOWSNT */
2941 #else /* not DOS_NT */
2942 #ifdef HAVE_EUIDACCESS
2943 return (euidaccess (filename
, 1) >= 0);
2945 /* Access isn't quite right because it uses the real uid
2946 and we really want to test with the effective uid.
2947 But Unix doesn't give us a right way to do it. */
2948 return (access (filename
, 1) >= 0);
2950 #endif /* not DOS_NT */
2953 /* Return nonzero if file FILENAME exists and can be written. */
2956 check_writable (filename
)
2961 if (stat (filename
, &st
) < 0)
2963 return (st
.st_mode
& S_IWRITE
|| (st
.st_mode
& S_IFMT
) == S_IFDIR
);
2964 #else /* not MSDOS */
2965 #ifdef HAVE_EUIDACCESS
2966 return (euidaccess (filename
, 2) >= 0);
2968 /* Access isn't quite right because it uses the real uid
2969 and we really want to test with the effective uid.
2970 But Unix doesn't give us a right way to do it.
2971 Opening with O_WRONLY could work for an ordinary file,
2972 but would lose for directories. */
2973 return (access (filename
, 2) >= 0);
2975 #endif /* not MSDOS */
2978 DEFUN ("file-exists-p", Ffile_exists_p
, Sfile_exists_p
, 1, 1, 0,
2979 doc
: /* Return t if file FILENAME exists. (This does not mean you can read it.)
2980 See also `file-readable-p' and `file-attributes'. */)
2982 Lisp_Object filename
;
2984 Lisp_Object absname
;
2985 Lisp_Object handler
;
2986 struct stat statbuf
;
2988 CHECK_STRING (filename
);
2989 absname
= Fexpand_file_name (filename
, Qnil
);
2991 /* If the file name has special constructs in it,
2992 call the corresponding file handler. */
2993 handler
= Ffind_file_name_handler (absname
, Qfile_exists_p
);
2994 if (!NILP (handler
))
2995 return call2 (handler
, Qfile_exists_p
, absname
);
2997 absname
= ENCODE_FILE (absname
);
2999 return (stat (SDATA (absname
), &statbuf
) >= 0) ? Qt
: Qnil
;
3002 DEFUN ("file-executable-p", Ffile_executable_p
, Sfile_executable_p
, 1, 1, 0,
3003 doc
: /* Return t if FILENAME can be executed by you.
3004 For a directory, this means you can access files in that directory. */)
3006 Lisp_Object filename
;
3008 Lisp_Object absname
;
3009 Lisp_Object handler
;
3011 CHECK_STRING (filename
);
3012 absname
= Fexpand_file_name (filename
, Qnil
);
3014 /* If the file name has special constructs in it,
3015 call the corresponding file handler. */
3016 handler
= Ffind_file_name_handler (absname
, Qfile_executable_p
);
3017 if (!NILP (handler
))
3018 return call2 (handler
, Qfile_executable_p
, absname
);
3020 absname
= ENCODE_FILE (absname
);
3022 return (check_executable (SDATA (absname
)) ? Qt
: Qnil
);
3025 DEFUN ("file-readable-p", Ffile_readable_p
, Sfile_readable_p
, 1, 1, 0,
3026 doc
: /* Return t if file FILENAME exists and you can read it.
3027 See also `file-exists-p' and `file-attributes'. */)
3029 Lisp_Object filename
;
3031 Lisp_Object absname
;
3032 Lisp_Object handler
;
3035 struct stat statbuf
;
3037 CHECK_STRING (filename
);
3038 absname
= Fexpand_file_name (filename
, Qnil
);
3040 /* If the file name has special constructs in it,
3041 call the corresponding file handler. */
3042 handler
= Ffind_file_name_handler (absname
, Qfile_readable_p
);
3043 if (!NILP (handler
))
3044 return call2 (handler
, Qfile_readable_p
, absname
);
3046 absname
= ENCODE_FILE (absname
);
3048 #if defined(DOS_NT) || defined(macintosh)
3049 /* Under MS-DOS, Windows, and Macintosh, open does not work for
3051 if (access (SDATA (absname
), 0) == 0)
3054 #else /* not DOS_NT and not macintosh */
3056 #if defined (S_ISFIFO) && defined (O_NONBLOCK)
3057 /* Opening a fifo without O_NONBLOCK can wait.
3058 We don't want to wait. But we don't want to mess wth O_NONBLOCK
3059 except in the case of a fifo, on a system which handles it. */
3060 desc
= stat (SDATA (absname
), &statbuf
);
3063 if (S_ISFIFO (statbuf
.st_mode
))
3064 flags
|= O_NONBLOCK
;
3066 desc
= emacs_open (SDATA (absname
), flags
, 0);
3071 #endif /* not DOS_NT and not macintosh */
3074 /* Having this before file-symlink-p mysteriously caused it to be forgotten
3076 DEFUN ("file-writable-p", Ffile_writable_p
, Sfile_writable_p
, 1, 1, 0,
3077 doc
: /* Return t if file FILENAME can be written or created by you. */)
3079 Lisp_Object filename
;
3081 Lisp_Object absname
, dir
, encoded
;
3082 Lisp_Object handler
;
3083 struct stat statbuf
;
3085 CHECK_STRING (filename
);
3086 absname
= Fexpand_file_name (filename
, Qnil
);
3088 /* If the file name has special constructs in it,
3089 call the corresponding file handler. */
3090 handler
= Ffind_file_name_handler (absname
, Qfile_writable_p
);
3091 if (!NILP (handler
))
3092 return call2 (handler
, Qfile_writable_p
, absname
);
3094 encoded
= ENCODE_FILE (absname
);
3095 if (stat (SDATA (encoded
), &statbuf
) >= 0)
3096 return (check_writable (SDATA (encoded
))
3099 dir
= Ffile_name_directory (absname
);
3102 dir
= Fdirectory_file_name (dir
);
3106 dir
= Fdirectory_file_name (dir
);
3109 dir
= ENCODE_FILE (dir
);
3111 /* The read-only attribute of the parent directory doesn't affect
3112 whether a file or directory can be created within it. Some day we
3113 should check ACLs though, which do affect this. */
3114 if (stat (SDATA (dir
), &statbuf
) < 0)
3116 return (statbuf
.st_mode
& S_IFMT
) == S_IFDIR
? Qt
: Qnil
;
3118 return (check_writable (!NILP (dir
) ? (char *) SDATA (dir
) : "")
3123 DEFUN ("access-file", Faccess_file
, Saccess_file
, 2, 2, 0,
3124 doc
: /* Access file FILENAME, and get an error if that does not work.
3125 The second argument STRING is used in the error message.
3126 If there is no error, we return nil. */)
3128 Lisp_Object filename
, string
;
3130 Lisp_Object handler
, encoded_filename
, absname
;
3133 CHECK_STRING (filename
);
3134 absname
= Fexpand_file_name (filename
, Qnil
);
3136 CHECK_STRING (string
);
3138 /* If the file name has special constructs in it,
3139 call the corresponding file handler. */
3140 handler
= Ffind_file_name_handler (absname
, Qaccess_file
);
3141 if (!NILP (handler
))
3142 return call3 (handler
, Qaccess_file
, absname
, string
);
3144 encoded_filename
= ENCODE_FILE (absname
);
3146 fd
= emacs_open (SDATA (encoded_filename
), O_RDONLY
, 0);
3148 report_file_error (SDATA (string
), Fcons (filename
, Qnil
));
3154 DEFUN ("file-symlink-p", Ffile_symlink_p
, Sfile_symlink_p
, 1, 1, 0,
3155 doc
: /* Return non-nil if file FILENAME is the name of a symbolic link.
3156 The value is the name of the file to which it is linked.
3157 Otherwise returns nil. */)
3159 Lisp_Object filename
;
3166 Lisp_Object handler
;
3168 CHECK_STRING (filename
);
3169 filename
= Fexpand_file_name (filename
, Qnil
);
3171 /* If the file name has special constructs in it,
3172 call the corresponding file handler. */
3173 handler
= Ffind_file_name_handler (filename
, Qfile_symlink_p
);
3174 if (!NILP (handler
))
3175 return call2 (handler
, Qfile_symlink_p
, filename
);
3177 filename
= ENCODE_FILE (filename
);
3184 buf
= (char *) xrealloc (buf
, bufsize
);
3185 bzero (buf
, bufsize
);
3188 valsize
= readlink (SDATA (filename
), buf
, bufsize
);
3192 /* HP-UX reports ERANGE if buffer is too small. */
3193 if (errno
== ERANGE
)
3203 while (valsize
>= bufsize
);
3205 val
= make_string (buf
, valsize
);
3206 if (buf
[0] == '/' && index (buf
, ':'))
3207 val
= concat2 (build_string ("/:"), val
);
3209 val
= DECODE_FILE (val
);
3211 #else /* not S_IFLNK */
3213 #endif /* not S_IFLNK */
3216 DEFUN ("file-directory-p", Ffile_directory_p
, Sfile_directory_p
, 1, 1, 0,
3217 doc
: /* Return t if FILENAME names an existing directory.
3218 Symbolic links to directories count as directories.
3219 See `file-symlink-p' to distinguish symlinks. */)
3221 Lisp_Object filename
;
3223 register Lisp_Object absname
;
3225 Lisp_Object handler
;
3227 absname
= expand_and_dir_to_file (filename
, current_buffer
->directory
);
3229 /* If the file name has special constructs in it,
3230 call the corresponding file handler. */
3231 handler
= Ffind_file_name_handler (absname
, Qfile_directory_p
);
3232 if (!NILP (handler
))
3233 return call2 (handler
, Qfile_directory_p
, absname
);
3235 absname
= ENCODE_FILE (absname
);
3237 if (stat (SDATA (absname
), &st
) < 0)
3239 return (st
.st_mode
& S_IFMT
) == S_IFDIR
? Qt
: Qnil
;
3242 DEFUN ("file-accessible-directory-p", Ffile_accessible_directory_p
, Sfile_accessible_directory_p
, 1, 1, 0,
3243 doc
: /* Return t if file FILENAME names a directory you can open.
3244 For the value to be t, FILENAME must specify the name of a directory as a file,
3245 and the directory must allow you to open files in it. In order to use a
3246 directory as a buffer's current directory, this predicate must return true.
3247 A directory name spec may be given instead; then the value is t
3248 if the directory so specified exists and really is a readable and
3249 searchable directory. */)
3251 Lisp_Object filename
;
3253 Lisp_Object handler
;
3255 struct gcpro gcpro1
;
3257 /* If the file name has special constructs in it,
3258 call the corresponding file handler. */
3259 handler
= Ffind_file_name_handler (filename
, Qfile_accessible_directory_p
);
3260 if (!NILP (handler
))
3261 return call2 (handler
, Qfile_accessible_directory_p
, filename
);
3263 /* It's an unlikely combination, but yes we really do need to gcpro:
3264 Suppose that file-accessible-directory-p has no handler, but
3265 file-directory-p does have a handler; this handler causes a GC which
3266 relocates the string in `filename'; and finally file-directory-p
3267 returns non-nil. Then we would end up passing a garbaged string
3268 to file-executable-p. */
3270 tem
= (NILP (Ffile_directory_p (filename
))
3271 || NILP (Ffile_executable_p (filename
)));
3273 return tem
? Qnil
: Qt
;
3276 DEFUN ("file-regular-p", Ffile_regular_p
, Sfile_regular_p
, 1, 1, 0,
3277 doc
: /* Return t if file FILENAME is the name of a regular file.
3278 This is the sort of file that holds an ordinary stream of data bytes. */)
3280 Lisp_Object filename
;
3282 register Lisp_Object absname
;
3284 Lisp_Object handler
;
3286 absname
= expand_and_dir_to_file (filename
, current_buffer
->directory
);
3288 /* If the file name has special constructs in it,
3289 call the corresponding file handler. */
3290 handler
= Ffind_file_name_handler (absname
, Qfile_regular_p
);
3291 if (!NILP (handler
))
3292 return call2 (handler
, Qfile_regular_p
, absname
);
3294 absname
= ENCODE_FILE (absname
);
3299 Lisp_Object tem
= Vw32_get_true_file_attributes
;
3301 /* Tell stat to use expensive method to get accurate info. */
3302 Vw32_get_true_file_attributes
= Qt
;
3303 result
= stat (SDATA (absname
), &st
);
3304 Vw32_get_true_file_attributes
= tem
;
3308 return (st
.st_mode
& S_IFMT
) == S_IFREG
? Qt
: Qnil
;
3311 if (stat (SDATA (absname
), &st
) < 0)
3313 return (st
.st_mode
& S_IFMT
) == S_IFREG
? Qt
: Qnil
;
3317 DEFUN ("file-modes", Ffile_modes
, Sfile_modes
, 1, 1, 0,
3318 doc
: /* Return mode bits of file named FILENAME, as an integer. */)
3320 Lisp_Object filename
;
3322 Lisp_Object absname
;
3324 Lisp_Object handler
;
3326 absname
= expand_and_dir_to_file (filename
, current_buffer
->directory
);
3328 /* If the file name has special constructs in it,
3329 call the corresponding file handler. */
3330 handler
= Ffind_file_name_handler (absname
, Qfile_modes
);
3331 if (!NILP (handler
))
3332 return call2 (handler
, Qfile_modes
, absname
);
3334 absname
= ENCODE_FILE (absname
);
3336 if (stat (SDATA (absname
), &st
) < 0)
3338 #if defined (MSDOS) && __DJGPP__ < 2
3339 if (check_executable (SDATA (absname
)))
3340 st
.st_mode
|= S_IEXEC
;
3341 #endif /* MSDOS && __DJGPP__ < 2 */
3343 return make_number (st
.st_mode
& 07777);
3346 DEFUN ("set-file-modes", Fset_file_modes
, Sset_file_modes
, 2, 2, 0,
3347 doc
: /* Set mode bits of file named FILENAME to MODE (an integer).
3348 Only the 12 low bits of MODE are used. */)
3350 Lisp_Object filename
, mode
;
3352 Lisp_Object absname
, encoded_absname
;
3353 Lisp_Object handler
;
3355 absname
= Fexpand_file_name (filename
, current_buffer
->directory
);
3356 CHECK_NUMBER (mode
);
3358 /* If the file name has special constructs in it,
3359 call the corresponding file handler. */
3360 handler
= Ffind_file_name_handler (absname
, Qset_file_modes
);
3361 if (!NILP (handler
))
3362 return call3 (handler
, Qset_file_modes
, absname
, mode
);
3364 encoded_absname
= ENCODE_FILE (absname
);
3366 if (chmod (SDATA (encoded_absname
), XINT (mode
)) < 0)
3367 report_file_error ("Doing chmod", Fcons (absname
, Qnil
));
3372 DEFUN ("set-default-file-modes", Fset_default_file_modes
, Sset_default_file_modes
, 1, 1, 0,
3373 doc
: /* Set the file permission bits for newly created files.
3374 The argument MODE should be an integer; only the low 9 bits are used.
3375 This setting is inherited by subprocesses. */)
3379 CHECK_NUMBER (mode
);
3381 umask ((~ XINT (mode
)) & 0777);
3386 DEFUN ("default-file-modes", Fdefault_file_modes
, Sdefault_file_modes
, 0, 0, 0,
3387 doc
: /* Return the default file protection for created files.
3388 The value is an integer. */)
3394 realmask
= umask (0);
3397 XSETINT (value
, (~ realmask
) & 0777);
3407 DEFUN ("unix-sync", Funix_sync
, Sunix_sync
, 0, 0, "",
3408 doc
: /* Tell Unix to finish all pending disk updates. */)
3417 DEFUN ("file-newer-than-file-p", Ffile_newer_than_file_p
, Sfile_newer_than_file_p
, 2, 2, 0,
3418 doc
: /* Return t if file FILE1 is newer than file FILE2.
3419 If FILE1 does not exist, the answer is nil;
3420 otherwise, if FILE2 does not exist, the answer is t. */)
3422 Lisp_Object file1
, file2
;
3424 Lisp_Object absname1
, absname2
;
3427 Lisp_Object handler
;
3428 struct gcpro gcpro1
, gcpro2
;
3430 CHECK_STRING (file1
);
3431 CHECK_STRING (file2
);
3434 GCPRO2 (absname1
, file2
);
3435 absname1
= expand_and_dir_to_file (file1
, current_buffer
->directory
);
3436 absname2
= expand_and_dir_to_file (file2
, current_buffer
->directory
);
3439 /* If the file name has special constructs in it,
3440 call the corresponding file handler. */
3441 handler
= Ffind_file_name_handler (absname1
, Qfile_newer_than_file_p
);
3443 handler
= Ffind_file_name_handler (absname2
, Qfile_newer_than_file_p
);
3444 if (!NILP (handler
))
3445 return call3 (handler
, Qfile_newer_than_file_p
, absname1
, absname2
);
3447 GCPRO2 (absname1
, absname2
);
3448 absname1
= ENCODE_FILE (absname1
);
3449 absname2
= ENCODE_FILE (absname2
);
3452 if (stat (SDATA (absname1
), &st
) < 0)
3455 mtime1
= st
.st_mtime
;
3457 if (stat (SDATA (absname2
), &st
) < 0)
3460 return (mtime1
> st
.st_mtime
) ? Qt
: Qnil
;
3464 Lisp_Object Qfind_buffer_file_type
;
3467 #ifndef READ_BUF_SIZE
3468 #define READ_BUF_SIZE (64 << 10)
3471 extern void adjust_markers_for_delete
P_ ((int, int, int, int));
3473 /* This function is called after Lisp functions to decide a coding
3474 system are called, or when they cause an error. Before they are
3475 called, the current buffer is set unibyte and it contains only a
3476 newly inserted text (thus the buffer was empty before the
3479 The functions may set markers, overlays, text properties, or even
3480 alter the buffer contents, change the current buffer.
3482 Here, we reset all those changes by:
3483 o set back the current buffer.
3484 o move all markers and overlays to BEG.
3485 o remove all text properties.
3486 o set back the buffer multibyteness. */
3489 decide_coding_unwind (unwind_data
)
3490 Lisp_Object unwind_data
;
3492 Lisp_Object multibyte
, undo_list
, buffer
;
3494 multibyte
= XCAR (unwind_data
);
3495 unwind_data
= XCDR (unwind_data
);
3496 undo_list
= XCAR (unwind_data
);
3497 buffer
= XCDR (unwind_data
);
3499 if (current_buffer
!= XBUFFER (buffer
))
3500 set_buffer_internal (XBUFFER (buffer
));
3501 adjust_markers_for_delete (BEG
, BEG_BYTE
, Z
, Z_BYTE
);
3502 adjust_overlays_for_delete (BEG
, Z
- BEG
);
3503 BUF_INTERVALS (current_buffer
) = 0;
3504 TEMP_SET_PT_BOTH (BEG
, BEG_BYTE
);
3506 /* Now we are safe to change the buffer's multibyteness directly. */
3507 current_buffer
->enable_multibyte_characters
= multibyte
;
3508 current_buffer
->undo_list
= undo_list
;
3514 /* Used to pass values from insert-file-contents to read_non_regular. */
3516 static int non_regular_fd
;
3517 static int non_regular_inserted
;
3518 static int non_regular_nbytes
;
3521 /* Read from a non-regular file.
3522 Read non_regular_trytry bytes max from non_regular_fd.
3523 Non_regular_inserted specifies where to put the read bytes.
3524 Value is the number of bytes read. */
3533 nbytes
= emacs_read (non_regular_fd
,
3534 BEG_ADDR
+ PT_BYTE
- BEG_BYTE
+ non_regular_inserted
,
3535 non_regular_nbytes
);
3537 return make_number (nbytes
);
3541 /* Condition-case handler used when reading from non-regular files
3542 in insert-file-contents. */
3545 read_non_regular_quit ()
3551 DEFUN ("insert-file-contents", Finsert_file_contents
, Sinsert_file_contents
,
3553 doc
: /* Insert contents of file FILENAME after point.
3554 Returns list of absolute file name and number of bytes inserted.
3555 If second argument VISIT is non-nil, the buffer's visited filename
3556 and last save file modtime are set, and it is marked unmodified.
3557 If visiting and the file does not exist, visiting is completed
3558 before the error is signaled.
3559 The optional third and fourth arguments BEG and END
3560 specify what portion of the file to insert.
3561 These arguments count bytes in the file, not characters in the buffer.
3562 If VISIT is non-nil, BEG and END must be nil.
3564 If optional fifth argument REPLACE is non-nil,
3565 it means replace the current buffer contents (in the accessible portion)
3566 with the file contents. This is better than simply deleting and inserting
3567 the whole thing because (1) it preserves some marker positions
3568 and (2) it puts less data in the undo list.
3569 When REPLACE is non-nil, the value is the number of characters actually read,
3570 which is often less than the number of characters to be read.
3572 This does code conversion according to the value of
3573 `coding-system-for-read' or `file-coding-system-alist',
3574 and sets the variable `last-coding-system-used' to the coding system
3576 (filename
, visit
, beg
, end
, replace
)
3577 Lisp_Object filename
, visit
, beg
, end
, replace
;
3582 register int how_much
;
3583 register int unprocessed
;
3584 int count
= SPECPDL_INDEX ();
3585 struct gcpro gcpro1
, gcpro2
, gcpro3
, gcpro4
;
3586 Lisp_Object handler
, val
, insval
, orig_filename
;
3589 int not_regular
= 0;
3590 unsigned char read_buf
[READ_BUF_SIZE
];
3591 struct coding_system coding
;
3592 unsigned char buffer
[1 << 14];
3593 int replace_handled
= 0;
3594 int set_coding_system
= 0;
3595 int coding_system_decided
= 0;
3598 if (current_buffer
->base_buffer
&& ! NILP (visit
))
3599 error ("Cannot do file visiting in an indirect buffer");
3601 if (!NILP (current_buffer
->read_only
))
3602 Fbarf_if_buffer_read_only ();
3606 orig_filename
= Qnil
;
3608 GCPRO4 (filename
, val
, p
, orig_filename
);
3610 CHECK_STRING (filename
);
3611 filename
= Fexpand_file_name (filename
, Qnil
);
3613 /* If the file name has special constructs in it,
3614 call the corresponding file handler. */
3615 handler
= Ffind_file_name_handler (filename
, Qinsert_file_contents
);
3616 if (!NILP (handler
))
3618 val
= call6 (handler
, Qinsert_file_contents
, filename
,
3619 visit
, beg
, end
, replace
);
3620 if (CONSP (val
) && CONSP (XCDR (val
)))
3621 inserted
= XINT (XCAR (XCDR (val
)));
3625 orig_filename
= filename
;
3626 filename
= ENCODE_FILE (filename
);
3632 Lisp_Object tem
= Vw32_get_true_file_attributes
;
3634 /* Tell stat to use expensive method to get accurate info. */
3635 Vw32_get_true_file_attributes
= Qt
;
3636 total
= stat (SDATA (filename
), &st
);
3637 Vw32_get_true_file_attributes
= tem
;
3642 if (stat (SDATA (filename
), &st
) < 0)
3644 if ((fd
= emacs_open (SDATA (filename
), O_RDONLY
, 0)) < 0
3645 || fstat (fd
, &st
) < 0)
3646 #endif /* not APOLLO */
3647 #endif /* WINDOWSNT */
3649 if (fd
>= 0) emacs_close (fd
);
3652 report_file_error ("Opening input file", Fcons (orig_filename
, Qnil
));
3655 if (!NILP (Vcoding_system_for_read
))
3656 Fset (Qbuffer_file_coding_system
, Vcoding_system_for_read
);
3661 /* This code will need to be changed in order to work on named
3662 pipes, and it's probably just not worth it. So we should at
3663 least signal an error. */
3664 if (!S_ISREG (st
.st_mode
))
3671 if (! NILP (replace
) || ! NILP (beg
) || ! NILP (end
))
3672 Fsignal (Qfile_error
,
3673 Fcons (build_string ("not a regular file"),
3674 Fcons (orig_filename
, Qnil
)));
3679 if ((fd
= emacs_open (SDATA (filename
), O_RDONLY
, 0)) < 0)
3682 /* Replacement should preserve point as it preserves markers. */
3683 if (!NILP (replace
))
3684 record_unwind_protect (restore_point_unwind
, Fpoint_marker ());
3686 record_unwind_protect (close_file_unwind
, make_number (fd
));
3688 /* Supposedly happens on VMS. */
3689 if (! not_regular
&& st
.st_size
< 0)
3690 error ("File size is negative");
3692 /* Prevent redisplay optimizations. */
3693 current_buffer
->clip_changed
= 1;
3697 if (!NILP (beg
) || !NILP (end
))
3698 error ("Attempt to visit less than an entire file");
3699 if (BEG
< Z
&& NILP (replace
))
3700 error ("Cannot do file visiting in a non-empty buffer");
3706 XSETFASTINT (beg
, 0);
3714 XSETINT (end
, st
.st_size
);
3716 /* Arithmetic overflow can occur if an Emacs integer cannot
3717 represent the file size, or if the calculations below
3718 overflow. The calculations below double the file size
3719 twice, so check that it can be multiplied by 4 safely. */
3720 if (XINT (end
) != st
.st_size
3721 || ((int) st
.st_size
* 4) / 4 != st
.st_size
)
3722 error ("Maximum buffer size exceeded");
3724 /* The file size returned from stat may be zero, but data
3725 may be readable nonetheless, for example when this is a
3726 file in the /proc filesystem. */
3727 if (st
.st_size
== 0)
3728 XSETINT (end
, READ_BUF_SIZE
);
3734 /* Decide the coding system to use for reading the file now
3735 because we can't use an optimized method for handling
3736 `coding:' tag if the current buffer is not empty. */
3740 if (!NILP (Vcoding_system_for_read
))
3741 val
= Vcoding_system_for_read
;
3742 else if (! NILP (replace
))
3743 /* In REPLACE mode, we can use the same coding system
3744 that was used to visit the file. */
3745 val
= current_buffer
->buffer_file_coding_system
;
3748 /* Don't try looking inside a file for a coding system
3749 specification if it is not seekable. */
3750 if (! not_regular
&& ! NILP (Vset_auto_coding_function
))
3752 /* Find a coding system specified in the heading two
3753 lines or in the tailing several lines of the file.
3754 We assume that the 1K-byte and 3K-byte for heading
3755 and tailing respectively are sufficient for this
3759 if (st
.st_size
<= (1024 * 4))
3760 nread
= emacs_read (fd
, read_buf
, 1024 * 4);
3763 nread
= emacs_read (fd
, read_buf
, 1024);
3766 if (lseek (fd
, st
.st_size
- (1024 * 3), 0) < 0)
3767 report_file_error ("Setting file position",
3768 Fcons (orig_filename
, Qnil
));
3769 nread
+= emacs_read (fd
, read_buf
+ nread
, 1024 * 3);
3774 error ("IO error reading %s: %s",
3775 SDATA (orig_filename
), emacs_strerror (errno
));
3778 struct buffer
*prev
= current_buffer
;
3782 record_unwind_protect (Fset_buffer
, Fcurrent_buffer ());
3784 buffer
= Fget_buffer_create (build_string (" *code-converting-work*"));
3785 buf
= XBUFFER (buffer
);
3787 buf
->directory
= current_buffer
->directory
;
3788 buf
->read_only
= Qnil
;
3789 buf
->filename
= Qnil
;
3790 buf
->undo_list
= Qt
;
3791 buf
->overlays_before
= Qnil
;
3792 buf
->overlays_after
= Qnil
;
3794 set_buffer_internal (buf
);
3796 buf
->enable_multibyte_characters
= Qnil
;
3798 insert_1_both (read_buf
, nread
, nread
, 0, 0, 0);
3799 TEMP_SET_PT_BOTH (BEG
, BEG_BYTE
);
3800 val
= call2 (Vset_auto_coding_function
,
3801 filename
, make_number (nread
));
3802 set_buffer_internal (prev
);
3804 /* Discard the unwind protect for recovering the
3808 /* Rewind the file for the actual read done later. */
3809 if (lseek (fd
, 0, 0) < 0)
3810 report_file_error ("Setting file position",
3811 Fcons (orig_filename
, Qnil
));
3817 /* If we have not yet decided a coding system, check
3818 file-coding-system-alist. */
3819 Lisp_Object args
[6], coding_systems
;
3821 args
[0] = Qinsert_file_contents
, args
[1] = orig_filename
;
3822 args
[2] = visit
, args
[3] = beg
, args
[4] = end
, args
[5] = replace
;
3823 coding_systems
= Ffind_operation_coding_system (6, args
);
3824 if (CONSP (coding_systems
))
3825 val
= XCAR (coding_systems
);
3829 setup_coding_system (Fcheck_coding_system (val
), &coding
);
3830 /* Ensure we set Vlast_coding_system_used. */
3831 set_coding_system
= 1;
3833 if (NILP (current_buffer
->enable_multibyte_characters
)
3835 /* We must suppress all character code conversion except for
3836 end-of-line conversion. */
3837 setup_raw_text_coding_system (&coding
);
3839 coding
.src_multibyte
= 0;
3840 coding
.dst_multibyte
3841 = !NILP (current_buffer
->enable_multibyte_characters
);
3842 coding_system_decided
= 1;
3845 /* If requested, replace the accessible part of the buffer
3846 with the file contents. Avoid replacing text at the
3847 beginning or end of the buffer that matches the file contents;
3848 that preserves markers pointing to the unchanged parts.
3850 Here we implement this feature in an optimized way
3851 for the case where code conversion is NOT needed.
3852 The following if-statement handles the case of conversion
3853 in a less optimal way.
3855 If the code conversion is "automatic" then we try using this
3856 method and hope for the best.
3857 But if we discover the need for conversion, we give up on this method
3858 and let the following if-statement handle the replace job. */
3861 && !(coding
.common_flags
& CODING_REQUIRE_DECODING_MASK
))
3863 /* same_at_start and same_at_end count bytes,
3864 because file access counts bytes
3865 and BEG and END count bytes. */
3866 int same_at_start
= BEGV_BYTE
;
3867 int same_at_end
= ZV_BYTE
;
3869 /* There is still a possibility we will find the need to do code
3870 conversion. If that happens, we set this variable to 1 to
3871 give up on handling REPLACE in the optimized way. */
3872 int giveup_match_end
= 0;
3874 if (XINT (beg
) != 0)
3876 if (lseek (fd
, XINT (beg
), 0) < 0)
3877 report_file_error ("Setting file position",
3878 Fcons (orig_filename
, Qnil
));
3883 /* Count how many chars at the start of the file
3884 match the text at the beginning of the buffer. */
3889 nread
= emacs_read (fd
, buffer
, sizeof buffer
);
3891 error ("IO error reading %s: %s",
3892 SDATA (orig_filename
), emacs_strerror (errno
));
3893 else if (nread
== 0)
3896 if (coding
.type
== coding_type_undecided
)
3897 detect_coding (&coding
, buffer
, nread
);
3898 if (coding
.common_flags
& CODING_REQUIRE_DECODING_MASK
)
3899 /* We found that the file should be decoded somehow.
3900 Let's give up here. */
3902 giveup_match_end
= 1;
3906 if (coding
.eol_type
== CODING_EOL_UNDECIDED
)
3907 detect_eol (&coding
, buffer
, nread
);
3908 if (coding
.eol_type
!= CODING_EOL_UNDECIDED
3909 && coding
.eol_type
!= CODING_EOL_LF
)
3910 /* We found that the format of eol should be decoded.
3911 Let's give up here. */
3913 giveup_match_end
= 1;
3918 while (bufpos
< nread
&& same_at_start
< ZV_BYTE
3919 && FETCH_BYTE (same_at_start
) == buffer
[bufpos
])
3920 same_at_start
++, bufpos
++;
3921 /* If we found a discrepancy, stop the scan.
3922 Otherwise loop around and scan the next bufferful. */
3923 if (bufpos
!= nread
)
3927 /* If the file matches the buffer completely,
3928 there's no need to replace anything. */
3929 if (same_at_start
- BEGV_BYTE
== XINT (end
))
3933 /* Truncate the buffer to the size of the file. */
3934 del_range_1 (same_at_start
, same_at_end
, 0, 0);
3939 /* Count how many chars at the end of the file
3940 match the text at the end of the buffer. But, if we have
3941 already found that decoding is necessary, don't waste time. */
3942 while (!giveup_match_end
)
3944 int total_read
, nread
, bufpos
, curpos
, trial
;
3946 /* At what file position are we now scanning? */
3947 curpos
= XINT (end
) - (ZV_BYTE
- same_at_end
);
3948 /* If the entire file matches the buffer tail, stop the scan. */
3951 /* How much can we scan in the next step? */
3952 trial
= min (curpos
, sizeof buffer
);
3953 if (lseek (fd
, curpos
- trial
, 0) < 0)
3954 report_file_error ("Setting file position",
3955 Fcons (orig_filename
, Qnil
));
3957 total_read
= nread
= 0;
3958 while (total_read
< trial
)
3960 nread
= emacs_read (fd
, buffer
+ total_read
, trial
- total_read
);
3962 error ("IO error reading %s: %s",
3963 SDATA (orig_filename
), emacs_strerror (errno
));
3964 else if (nread
== 0)
3966 total_read
+= nread
;
3969 /* Scan this bufferful from the end, comparing with
3970 the Emacs buffer. */
3971 bufpos
= total_read
;
3973 /* Compare with same_at_start to avoid counting some buffer text
3974 as matching both at the file's beginning and at the end. */
3975 while (bufpos
> 0 && same_at_end
> same_at_start
3976 && FETCH_BYTE (same_at_end
- 1) == buffer
[bufpos
- 1])
3977 same_at_end
--, bufpos
--;
3979 /* If we found a discrepancy, stop the scan.
3980 Otherwise loop around and scan the preceding bufferful. */
3983 /* If this discrepancy is because of code conversion,
3984 we cannot use this method; giveup and try the other. */
3985 if (same_at_end
> same_at_start
3986 && FETCH_BYTE (same_at_end
- 1) >= 0200
3987 && ! NILP (current_buffer
->enable_multibyte_characters
)
3988 && (CODING_MAY_REQUIRE_DECODING (&coding
)))
3989 giveup_match_end
= 1;
3998 if (! giveup_match_end
)
4002 /* We win! We can handle REPLACE the optimized way. */
4004 /* Extend the start of non-matching text area to multibyte
4005 character boundary. */
4006 if (! NILP (current_buffer
->enable_multibyte_characters
))
4007 while (same_at_start
> BEGV_BYTE
4008 && ! CHAR_HEAD_P (FETCH_BYTE (same_at_start
)))
4011 /* Extend the end of non-matching text area to multibyte
4012 character boundary. */
4013 if (! NILP (current_buffer
->enable_multibyte_characters
))
4014 while (same_at_end
< ZV_BYTE
4015 && ! CHAR_HEAD_P (FETCH_BYTE (same_at_end
)))
4018 /* Don't try to reuse the same piece of text twice. */
4019 overlap
= (same_at_start
- BEGV_BYTE
4020 - (same_at_end
+ st
.st_size
- ZV
));
4022 same_at_end
+= overlap
;
4024 /* Arrange to read only the nonmatching middle part of the file. */
4025 XSETFASTINT (beg
, XINT (beg
) + (same_at_start
- BEGV_BYTE
));
4026 XSETFASTINT (end
, XINT (end
) - (ZV_BYTE
- same_at_end
));
4028 del_range_byte (same_at_start
, same_at_end
, 0);
4029 /* Insert from the file at the proper position. */
4030 temp
= BYTE_TO_CHAR (same_at_start
);
4031 SET_PT_BOTH (temp
, same_at_start
);
4033 /* If display currently starts at beginning of line,
4034 keep it that way. */
4035 if (XBUFFER (XWINDOW (selected_window
)->buffer
) == current_buffer
)
4036 XWINDOW (selected_window
)->start_at_line_beg
= Fbolp ();
4038 replace_handled
= 1;
4042 /* If requested, replace the accessible part of the buffer
4043 with the file contents. Avoid replacing text at the
4044 beginning or end of the buffer that matches the file contents;
4045 that preserves markers pointing to the unchanged parts.
4047 Here we implement this feature for the case where code conversion
4048 is needed, in a simple way that needs a lot of memory.
4049 The preceding if-statement handles the case of no conversion
4050 in a more optimized way. */
4051 if (!NILP (replace
) && ! replace_handled
&& BEGV
< ZV
)
4053 int same_at_start
= BEGV_BYTE
;
4054 int same_at_end
= ZV_BYTE
;
4057 /* Make sure that the gap is large enough. */
4058 int bufsize
= 2 * st
.st_size
;
4059 unsigned char *conversion_buffer
= (unsigned char *) xmalloc (bufsize
);
4062 /* First read the whole file, performing code conversion into
4063 CONVERSION_BUFFER. */
4065 if (lseek (fd
, XINT (beg
), 0) < 0)
4067 xfree (conversion_buffer
);
4068 report_file_error ("Setting file position",
4069 Fcons (orig_filename
, Qnil
));
4072 total
= st
.st_size
; /* Total bytes in the file. */
4073 how_much
= 0; /* Bytes read from file so far. */
4074 inserted
= 0; /* Bytes put into CONVERSION_BUFFER so far. */
4075 unprocessed
= 0; /* Bytes not processed in previous loop. */
4077 while (how_much
< total
)
4079 /* try is reserved in some compilers (Microsoft C) */
4080 int trytry
= min (total
- how_much
, READ_BUF_SIZE
- unprocessed
);
4081 unsigned char *destination
= read_buf
+ unprocessed
;
4084 /* Allow quitting out of the actual I/O. */
4087 this = emacs_read (fd
, destination
, trytry
);
4090 if (this < 0 || this + unprocessed
== 0)
4098 if (CODING_MAY_REQUIRE_DECODING (&coding
))
4100 int require
, result
;
4102 this += unprocessed
;
4104 /* If we are using more space than estimated,
4105 make CONVERSION_BUFFER bigger. */
4106 require
= decoding_buffer_size (&coding
, this);
4107 if (inserted
+ require
+ 2 * (total
- how_much
) > bufsize
)
4109 bufsize
= inserted
+ require
+ 2 * (total
- how_much
);
4110 conversion_buffer
= (unsigned char *) xrealloc (conversion_buffer
, bufsize
);
4113 /* Convert this batch with results in CONVERSION_BUFFER. */
4114 if (how_much
>= total
) /* This is the last block. */
4115 coding
.mode
|= CODING_MODE_LAST_BLOCK
;
4116 if (coding
.composing
!= COMPOSITION_DISABLED
)
4117 coding_allocate_composition_data (&coding
, BEGV
);
4118 result
= decode_coding (&coding
, read_buf
,
4119 conversion_buffer
+ inserted
,
4120 this, bufsize
- inserted
);
4122 /* Save for next iteration whatever we didn't convert. */
4123 unprocessed
= this - coding
.consumed
;
4124 bcopy (read_buf
+ coding
.consumed
, read_buf
, unprocessed
);
4125 if (!NILP (current_buffer
->enable_multibyte_characters
))
4126 this = coding
.produced
;
4128 this = str_as_unibyte (conversion_buffer
+ inserted
,
4135 /* At this point, INSERTED is how many characters (i.e. bytes)
4136 are present in CONVERSION_BUFFER.
4137 HOW_MUCH should equal TOTAL,
4138 or should be <= 0 if we couldn't read the file. */
4142 xfree (conversion_buffer
);
4145 error ("IO error reading %s: %s",
4146 SDATA (orig_filename
), emacs_strerror (errno
));
4147 else if (how_much
== -2)
4148 error ("maximum buffer size exceeded");
4151 /* Compare the beginning of the converted file
4152 with the buffer text. */
4155 while (bufpos
< inserted
&& same_at_start
< same_at_end
4156 && FETCH_BYTE (same_at_start
) == conversion_buffer
[bufpos
])
4157 same_at_start
++, bufpos
++;
4159 /* If the file matches the buffer completely,
4160 there's no need to replace anything. */
4162 if (bufpos
== inserted
)
4164 xfree (conversion_buffer
);
4167 /* Truncate the buffer to the size of the file. */
4168 del_range_byte (same_at_start
, same_at_end
, 0);
4173 /* Extend the start of non-matching text area to multibyte
4174 character boundary. */
4175 if (! NILP (current_buffer
->enable_multibyte_characters
))
4176 while (same_at_start
> BEGV_BYTE
4177 && ! CHAR_HEAD_P (FETCH_BYTE (same_at_start
)))
4180 /* Scan this bufferful from the end, comparing with
4181 the Emacs buffer. */
4184 /* Compare with same_at_start to avoid counting some buffer text
4185 as matching both at the file's beginning and at the end. */
4186 while (bufpos
> 0 && same_at_end
> same_at_start
4187 && FETCH_BYTE (same_at_end
- 1) == conversion_buffer
[bufpos
- 1])
4188 same_at_end
--, bufpos
--;
4190 /* Extend the end of non-matching text area to multibyte
4191 character boundary. */
4192 if (! NILP (current_buffer
->enable_multibyte_characters
))
4193 while (same_at_end
< ZV_BYTE
4194 && ! CHAR_HEAD_P (FETCH_BYTE (same_at_end
)))
4197 /* Don't try to reuse the same piece of text twice. */
4198 overlap
= same_at_start
- BEGV_BYTE
- (same_at_end
+ inserted
- ZV_BYTE
);
4200 same_at_end
+= overlap
;
4202 /* If display currently starts at beginning of line,
4203 keep it that way. */
4204 if (XBUFFER (XWINDOW (selected_window
)->buffer
) == current_buffer
)
4205 XWINDOW (selected_window
)->start_at_line_beg
= Fbolp ();
4207 /* Replace the chars that we need to replace,
4208 and update INSERTED to equal the number of bytes
4209 we are taking from the file. */
4210 inserted
-= (Z_BYTE
- same_at_end
) + (same_at_start
- BEG_BYTE
);
4212 if (same_at_end
!= same_at_start
)
4214 del_range_byte (same_at_start
, same_at_end
, 0);
4216 same_at_start
= GPT_BYTE
;
4220 temp
= BYTE_TO_CHAR (same_at_start
);
4222 /* Insert from the file at the proper position. */
4223 SET_PT_BOTH (temp
, same_at_start
);
4224 insert_1 (conversion_buffer
+ same_at_start
- BEG_BYTE
, inserted
,
4226 if (coding
.cmp_data
&& coding
.cmp_data
->used
)
4227 coding_restore_composition (&coding
, Fcurrent_buffer ());
4228 coding_free_composition_data (&coding
);
4230 /* Set `inserted' to the number of inserted characters. */
4231 inserted
= PT
- temp
;
4233 xfree (conversion_buffer
);
4242 register Lisp_Object temp
;
4244 total
= XINT (end
) - XINT (beg
);
4246 /* Make sure point-max won't overflow after this insertion. */
4247 XSETINT (temp
, total
);
4248 if (total
!= XINT (temp
))
4249 error ("Maximum buffer size exceeded");
4252 /* For a special file, all we can do is guess. */
4253 total
= READ_BUF_SIZE
;
4255 if (NILP (visit
) && total
> 0)
4256 prepare_to_modify_buffer (PT
, PT
, NULL
);
4259 if (GAP_SIZE
< total
)
4260 make_gap (total
- GAP_SIZE
);
4262 if (XINT (beg
) != 0 || !NILP (replace
))
4264 if (lseek (fd
, XINT (beg
), 0) < 0)
4265 report_file_error ("Setting file position",
4266 Fcons (orig_filename
, Qnil
));
4269 /* In the following loop, HOW_MUCH contains the total bytes read so
4270 far for a regular file, and not changed for a special file. But,
4271 before exiting the loop, it is set to a negative value if I/O
4275 /* Total bytes inserted. */
4278 /* Here, we don't do code conversion in the loop. It is done by
4279 code_convert_region after all data are read into the buffer. */
4281 int gap_size
= GAP_SIZE
;
4283 while (how_much
< total
)
4285 /* try is reserved in some compilers (Microsoft C) */
4286 int trytry
= min (total
- how_much
, READ_BUF_SIZE
);
4293 /* Maybe make more room. */
4294 if (gap_size
< trytry
)
4296 make_gap (total
- gap_size
);
4297 gap_size
= GAP_SIZE
;
4300 /* Read from the file, capturing `quit'. When an
4301 error occurs, end the loop, and arrange for a quit
4302 to be signaled after decoding the text we read. */
4303 non_regular_fd
= fd
;
4304 non_regular_inserted
= inserted
;
4305 non_regular_nbytes
= trytry
;
4306 val
= internal_condition_case_1 (read_non_regular
, Qnil
, Qerror
,
4307 read_non_regular_quit
);
4318 /* Allow quitting out of the actual I/O. We don't make text
4319 part of the buffer until all the reading is done, so a C-g
4320 here doesn't do any harm. */
4323 this = emacs_read (fd
, BEG_ADDR
+ PT_BYTE
- BEG_BYTE
+ inserted
, trytry
);
4335 /* For a regular file, where TOTAL is the real size,
4336 count HOW_MUCH to compare with it.
4337 For a special file, where TOTAL is just a buffer size,
4338 so don't bother counting in HOW_MUCH.
4339 (INSERTED is where we count the number of characters inserted.) */
4346 /* Make the text read part of the buffer. */
4347 GAP_SIZE
-= inserted
;
4349 GPT_BYTE
+= inserted
;
4351 ZV_BYTE
+= inserted
;
4356 /* Put an anchor to ensure multi-byte form ends at gap. */
4361 /* Discard the unwind protect for closing the file. */
4365 error ("IO error reading %s: %s",
4366 SDATA (orig_filename
), emacs_strerror (errno
));
4370 if (! coding_system_decided
)
4372 /* The coding system is not yet decided. Decide it by an
4373 optimized method for handling `coding:' tag.
4375 Note that we can get here only if the buffer was empty
4376 before the insertion. */
4380 if (!NILP (Vcoding_system_for_read
))
4381 val
= Vcoding_system_for_read
;
4384 /* Since we are sure that the current buffer was empty
4385 before the insertion, we can toggle
4386 enable-multibyte-characters directly here without taking
4387 care of marker adjustment and byte combining problem. By
4388 this way, we can run Lisp program safely before decoding
4389 the inserted text. */
4390 Lisp_Object unwind_data
;
4391 int count
= SPECPDL_INDEX ();
4393 unwind_data
= Fcons (current_buffer
->enable_multibyte_characters
,
4394 Fcons (current_buffer
->undo_list
,
4395 Fcurrent_buffer ()));
4396 current_buffer
->enable_multibyte_characters
= Qnil
;
4397 current_buffer
->undo_list
= Qt
;
4398 record_unwind_protect (decide_coding_unwind
, unwind_data
);
4400 if (inserted
> 0 && ! NILP (Vset_auto_coding_function
))
4402 val
= call2 (Vset_auto_coding_function
,
4403 filename
, make_number (inserted
));
4408 /* If the coding system is not yet decided, check
4409 file-coding-system-alist. */
4410 Lisp_Object args
[6], coding_systems
;
4412 args
[0] = Qinsert_file_contents
, args
[1] = orig_filename
;
4413 args
[2] = visit
, args
[3] = beg
, args
[4] = end
, args
[5] = Qnil
;
4414 coding_systems
= Ffind_operation_coding_system (6, args
);
4415 if (CONSP (coding_systems
))
4416 val
= XCAR (coding_systems
);
4419 unbind_to (count
, Qnil
);
4420 inserted
= Z_BYTE
- BEG_BYTE
;
4423 /* The following kludgy code is to avoid some compiler bug.
4425 setup_coding_system (val, &coding);
4428 struct coding_system temp_coding
;
4429 setup_coding_system (val
, &temp_coding
);
4430 bcopy (&temp_coding
, &coding
, sizeof coding
);
4432 /* Ensure we set Vlast_coding_system_used. */
4433 set_coding_system
= 1;
4435 if (NILP (current_buffer
->enable_multibyte_characters
)
4437 /* We must suppress all character code conversion except for
4438 end-of-line conversion. */
4439 setup_raw_text_coding_system (&coding
);
4440 coding
.src_multibyte
= 0;
4441 coding
.dst_multibyte
4442 = !NILP (current_buffer
->enable_multibyte_characters
);
4446 /* Can't do this if part of the buffer might be preserved. */
4448 && (coding
.type
== coding_type_no_conversion
4449 || coding
.type
== coding_type_raw_text
))
4451 /* Visiting a file with these coding system makes the buffer
4453 current_buffer
->enable_multibyte_characters
= Qnil
;
4454 coding
.dst_multibyte
= 0;
4457 if (inserted
> 0 || coding
.type
== coding_type_ccl
)
4459 if (CODING_MAY_REQUIRE_DECODING (&coding
))
4461 code_convert_region (PT
, PT_BYTE
, PT
+ inserted
, PT_BYTE
+ inserted
,
4463 inserted
= coding
.produced_char
;
4466 adjust_after_insert (PT
, PT_BYTE
, PT
+ inserted
, PT_BYTE
+ inserted
,
4471 /* Use the conversion type to determine buffer-file-type
4472 (find-buffer-file-type is now used to help determine the
4474 if ((coding
.eol_type
== CODING_EOL_UNDECIDED
4475 || coding
.eol_type
== CODING_EOL_LF
)
4476 && ! CODING_REQUIRE_DECODING (&coding
))
4477 current_buffer
->buffer_file_type
= Qt
;
4479 current_buffer
->buffer_file_type
= Qnil
;
4486 if (!EQ (current_buffer
->undo_list
, Qt
))
4487 current_buffer
->undo_list
= Qnil
;
4489 stat (SDATA (filename
), &st
);
4494 current_buffer
->modtime
= st
.st_mtime
;
4495 current_buffer
->filename
= orig_filename
;
4498 SAVE_MODIFF
= MODIFF
;
4499 current_buffer
->auto_save_modified
= MODIFF
;
4500 XSETFASTINT (current_buffer
->save_length
, Z
- BEG
);
4501 #ifdef CLASH_DETECTION
4504 if (!NILP (current_buffer
->file_truename
))
4505 unlock_file (current_buffer
->file_truename
);
4506 unlock_file (filename
);
4508 #endif /* CLASH_DETECTION */
4510 Fsignal (Qfile_error
,
4511 Fcons (build_string ("not a regular file"),
4512 Fcons (orig_filename
, Qnil
)));
4515 /* Decode file format */
4518 int empty_undo_list_p
= 0;
4520 /* If we're anyway going to discard undo information, don't
4521 record it in the first place. The buffer's undo list at this
4522 point is either nil or t when visiting a file. */
4525 empty_undo_list_p
= NILP (current_buffer
->undo_list
);
4526 current_buffer
->undo_list
= Qt
;
4529 insval
= call3 (Qformat_decode
,
4530 Qnil
, make_number (inserted
), visit
);
4531 CHECK_NUMBER (insval
);
4532 inserted
= XFASTINT (insval
);
4535 current_buffer
->undo_list
= empty_undo_list_p
? Qnil
: Qt
;
4538 if (set_coding_system
)
4539 Vlast_coding_system_used
= coding
.symbol
;
4541 /* Call after-change hooks for the inserted text, aside from the case
4542 of normal visiting (not with REPLACE), which is done in a new buffer
4543 "before" the buffer is changed. */
4544 if (inserted
> 0 && total
> 0
4545 && (NILP (visit
) || !NILP (replace
)))
4547 signal_after_change (PT
, 0, inserted
);
4548 update_compositions (PT
, PT
, CHECK_BORDER
);
4551 p
= Vafter_insert_file_functions
;
4554 insval
= call1 (XCAR (p
), make_number (inserted
));
4557 CHECK_NUMBER (insval
);
4558 inserted
= XFASTINT (insval
);
4565 && current_buffer
->modtime
== -1)
4567 /* If visiting nonexistent file, return nil. */
4568 report_file_error ("Opening input file", Fcons (orig_filename
, Qnil
));
4572 Fsignal (Qquit
, Qnil
);
4574 /* ??? Retval needs to be dealt with in all cases consistently. */
4576 val
= Fcons (orig_filename
,
4577 Fcons (make_number (inserted
),
4580 RETURN_UNGCPRO (unbind_to (count
, val
));
4583 static Lisp_Object build_annotations
P_ ((Lisp_Object
, Lisp_Object
));
4584 static Lisp_Object build_annotations_2
P_ ((Lisp_Object
, Lisp_Object
,
4585 Lisp_Object
, Lisp_Object
));
4587 /* If build_annotations switched buffers, switch back to BUF.
4588 Kill the temporary buffer that was selected in the meantime.
4590 Since this kill only the last temporary buffer, some buffers remain
4591 not killed if build_annotations switched buffers more than once.
4595 build_annotations_unwind (buf
)
4600 if (XBUFFER (buf
) == current_buffer
)
4602 tembuf
= Fcurrent_buffer ();
4604 Fkill_buffer (tembuf
);
4608 /* Decide the coding-system to encode the data with. */
4611 choose_write_coding_system (start
, end
, filename
,
4612 append
, visit
, lockname
, coding
)
4613 Lisp_Object start
, end
, filename
, append
, visit
, lockname
;
4614 struct coding_system
*coding
;
4620 else if (!NILP (Vcoding_system_for_write
))
4621 val
= Vcoding_system_for_write
;
4624 /* If the variable `buffer-file-coding-system' is set locally,
4625 it means that the file was read with some kind of code
4626 conversion or the variable is explicitly set by users. We
4627 had better write it out with the same coding system even if
4628 `enable-multibyte-characters' is nil.
4630 If it is not set locally, we anyway have to convert EOL
4631 format if the default value of `buffer-file-coding-system'
4632 tells that it is not Unix-like (LF only) format. */
4633 int using_default_coding
= 0;
4634 int force_raw_text
= 0;
4636 val
= current_buffer
->buffer_file_coding_system
;
4638 || NILP (Flocal_variable_p (Qbuffer_file_coding_system
, Qnil
)))
4641 if (NILP (current_buffer
->enable_multibyte_characters
))
4647 /* Check file-coding-system-alist. */
4648 Lisp_Object args
[7], coding_systems
;
4650 args
[0] = Qwrite_region
; args
[1] = start
; args
[2] = end
;
4651 args
[3] = filename
; args
[4] = append
; args
[5] = visit
;
4653 coding_systems
= Ffind_operation_coding_system (7, args
);
4654 if (CONSP (coding_systems
) && !NILP (XCDR (coding_systems
)))
4655 val
= XCDR (coding_systems
);
4659 && !NILP (current_buffer
->buffer_file_coding_system
))
4661 /* If we still have not decided a coding system, use the
4662 default value of buffer-file-coding-system. */
4663 val
= current_buffer
->buffer_file_coding_system
;
4664 using_default_coding
= 1;
4668 && !NILP (Ffboundp (Vselect_safe_coding_system_function
)))
4669 /* Confirm that VAL can surely encode the current region. */
4670 val
= call5 (Vselect_safe_coding_system_function
,
4671 start
, end
, val
, Qnil
, filename
);
4673 setup_coding_system (Fcheck_coding_system (val
), coding
);
4674 if (coding
->eol_type
== CODING_EOL_UNDECIDED
4675 && !using_default_coding
)
4677 if (! EQ (default_buffer_file_coding
.symbol
,
4678 buffer_defaults
.buffer_file_coding_system
))
4679 setup_coding_system (buffer_defaults
.buffer_file_coding_system
,
4680 &default_buffer_file_coding
);
4681 if (default_buffer_file_coding
.eol_type
!= CODING_EOL_UNDECIDED
)
4683 Lisp_Object subsidiaries
;
4685 coding
->eol_type
= default_buffer_file_coding
.eol_type
;
4686 subsidiaries
= Fget (coding
->symbol
, Qeol_type
);
4687 if (VECTORP (subsidiaries
)
4688 && XVECTOR (subsidiaries
)->size
== 3)
4690 = XVECTOR (subsidiaries
)->contents
[coding
->eol_type
];
4695 setup_raw_text_coding_system (coding
);
4696 goto done_setup_coding
;
4699 setup_coding_system (Fcheck_coding_system (val
), coding
);
4702 if (!STRINGP (start
) && !NILP (current_buffer
->selective_display
))
4703 coding
->mode
|= CODING_MODE_SELECTIVE_DISPLAY
;
4706 DEFUN ("write-region", Fwrite_region
, Swrite_region
, 3, 7,
4707 "r\nFWrite region to file: \ni\ni\ni\np",
4708 doc
: /* Write current region into specified file.
4709 When called from a program, requires three arguments:
4710 START, END and FILENAME. START and END are normally buffer positions
4711 specifying the part of the buffer to write.
4712 If START is nil, that means to use the entire buffer contents.
4713 If START is a string, then output that string to the file
4714 instead of any buffer contents; END is ignored.
4716 Optional fourth argument APPEND if non-nil means
4717 append to existing file contents (if any). If it is an integer,
4718 seek to that offset in the file before writing.
4719 Optional fifth argument VISIT if t means
4720 set the last-save-file-modtime of buffer to this file's modtime
4721 and mark buffer not modified.
4722 If VISIT is a string, it is a second file name;
4723 the output goes to FILENAME, but the buffer is marked as visiting VISIT.
4724 VISIT is also the file name to lock and unlock for clash detection.
4725 If VISIT is neither t nor nil nor a string,
4726 that means do not display the \"Wrote file\" message.
4727 The optional sixth arg LOCKNAME, if non-nil, specifies the name to
4728 use for locking and unlocking, overriding FILENAME and VISIT.
4729 The optional seventh arg MUSTBENEW, if non-nil, insists on a check
4730 for an existing file with the same name. If MUSTBENEW is `excl',
4731 that means to get an error if the file already exists; never overwrite.
4732 If MUSTBENEW is neither nil nor `excl', that means ask for
4733 confirmation before overwriting, but do go ahead and overwrite the file
4734 if the user confirms.
4736 This does code conversion according to the value of
4737 `coding-system-for-write', `buffer-file-coding-system', or
4738 `file-coding-system-alist', and sets the variable
4739 `last-coding-system-used' to the coding system actually used. */)
4740 (start
, end
, filename
, append
, visit
, lockname
, mustbenew
)
4741 Lisp_Object start
, end
, filename
, append
, visit
, lockname
, mustbenew
;
4746 const unsigned char *fn
;
4749 int count
= SPECPDL_INDEX ();
4752 unsigned char *fname
= 0; /* If non-0, original filename (must rename) */
4754 Lisp_Object handler
;
4755 Lisp_Object visit_file
;
4756 Lisp_Object annotations
;
4757 Lisp_Object encoded_filename
;
4758 int visiting
= (EQ (visit
, Qt
) || STRINGP (visit
));
4759 int quietly
= !NILP (visit
);
4760 struct gcpro gcpro1
, gcpro2
, gcpro3
, gcpro4
, gcpro5
;
4761 struct buffer
*given_buffer
;
4763 int buffer_file_type
= O_BINARY
;
4765 struct coding_system coding
;
4767 if (current_buffer
->base_buffer
&& visiting
)
4768 error ("Cannot do file visiting in an indirect buffer");
4770 if (!NILP (start
) && !STRINGP (start
))
4771 validate_region (&start
, &end
);
4773 GCPRO5 (start
, filename
, visit
, visit_file
, lockname
);
4775 filename
= Fexpand_file_name (filename
, Qnil
);
4777 if (!NILP (mustbenew
) && !EQ (mustbenew
, Qexcl
))
4778 barf_or_query_if_file_exists (filename
, "overwrite", 1, 0, 1);
4780 if (STRINGP (visit
))
4781 visit_file
= Fexpand_file_name (visit
, Qnil
);
4783 visit_file
= filename
;
4785 if (NILP (lockname
))
4786 lockname
= visit_file
;
4790 /* If the file name has special constructs in it,
4791 call the corresponding file handler. */
4792 handler
= Ffind_file_name_handler (filename
, Qwrite_region
);
4793 /* If FILENAME has no handler, see if VISIT has one. */
4794 if (NILP (handler
) && STRINGP (visit
))
4795 handler
= Ffind_file_name_handler (visit
, Qwrite_region
);
4797 if (!NILP (handler
))
4800 val
= call6 (handler
, Qwrite_region
, start
, end
,
4801 filename
, append
, visit
);
4805 SAVE_MODIFF
= MODIFF
;
4806 XSETFASTINT (current_buffer
->save_length
, Z
- BEG
);
4807 current_buffer
->filename
= visit_file
;
4813 /* Special kludge to simplify auto-saving. */
4816 XSETFASTINT (start
, BEG
);
4817 XSETFASTINT (end
, Z
);
4820 record_unwind_protect (build_annotations_unwind
, Fcurrent_buffer ());
4821 count1
= SPECPDL_INDEX ();
4823 given_buffer
= current_buffer
;
4825 if (!STRINGP (start
))
4827 annotations
= build_annotations (start
, end
);
4829 if (current_buffer
!= given_buffer
)
4831 XSETFASTINT (start
, BEGV
);
4832 XSETFASTINT (end
, ZV
);
4838 GCPRO5 (start
, filename
, annotations
, visit_file
, lockname
);
4840 /* Decide the coding-system to encode the data with.
4841 We used to make this choice before calling build_annotations, but that
4842 leads to problems when a write-annotate-function takes care of
4843 unsavable chars (as was the case with X-Symbol). */
4844 choose_write_coding_system (start
, end
, filename
,
4845 append
, visit
, lockname
, &coding
);
4846 Vlast_coding_system_used
= coding
.symbol
;
4848 given_buffer
= current_buffer
;
4849 if (! STRINGP (start
))
4851 annotations
= build_annotations_2 (start
, end
,
4852 coding
.pre_write_conversion
, annotations
);
4853 if (current_buffer
!= given_buffer
)
4855 XSETFASTINT (start
, BEGV
);
4856 XSETFASTINT (end
, ZV
);
4860 #ifdef CLASH_DETECTION
4863 #if 0 /* This causes trouble for GNUS. */
4864 /* If we've locked this file for some other buffer,
4865 query before proceeding. */
4866 if (!visiting
&& EQ (Ffile_locked_p (lockname
), Qt
))
4867 call2 (intern ("ask-user-about-lock"), filename
, Vuser_login_name
);
4870 lock_file (lockname
);
4872 #endif /* CLASH_DETECTION */
4874 encoded_filename
= ENCODE_FILE (filename
);
4876 fn
= SDATA (encoded_filename
);
4880 desc
= emacs_open (fn
, O_WRONLY
| buffer_file_type
, 0);
4881 #else /* not DOS_NT */
4882 desc
= emacs_open (fn
, O_WRONLY
, 0);
4883 #endif /* not DOS_NT */
4885 if (desc
< 0 && (NILP (append
) || errno
== ENOENT
))
4887 if (auto_saving
) /* Overwrite any previous version of autosave file */
4889 vms_truncate (fn
); /* if fn exists, truncate to zero length */
4890 desc
= emacs_open (fn
, O_RDWR
, 0);
4892 desc
= creat_copy_attrs (STRINGP (current_buffer
->filename
)
4893 ? SDATA (current_buffer
->filename
) : 0,
4896 else /* Write to temporary name and rename if no errors */
4898 Lisp_Object temp_name
;
4899 temp_name
= Ffile_name_directory (filename
);
4901 if (!NILP (temp_name
))
4903 temp_name
= Fmake_temp_name (concat2 (temp_name
,
4904 build_string ("$$SAVE$$")));
4905 fname
= SDATA (filename
);
4906 fn
= SDATA (temp_name
);
4907 desc
= creat_copy_attrs (fname
, fn
);
4910 /* If we can't open the temporary file, try creating a new
4911 version of the original file. VMS "creat" creates a
4912 new version rather than truncating an existing file. */
4915 desc
= creat (fn
, 0666);
4916 #if 0 /* This can clobber an existing file and fail to replace it,
4917 if the user runs out of space. */
4920 /* We can't make a new version;
4921 try to truncate and rewrite existing version if any. */
4923 desc
= emacs_open (fn
, O_RDWR
, 0);
4929 desc
= creat (fn
, 0666);
4933 desc
= emacs_open (fn
,
4934 O_WRONLY
| O_CREAT
| buffer_file_type
4935 | (EQ (mustbenew
, Qexcl
) ? O_EXCL
: O_TRUNC
),
4936 S_IREAD
| S_IWRITE
);
4937 #else /* not DOS_NT */
4938 desc
= emacs_open (fn
, O_WRONLY
| O_TRUNC
| O_CREAT
4939 | (EQ (mustbenew
, Qexcl
) ? O_EXCL
: 0),
4940 auto_saving
? auto_save_mode_bits
: 0666);
4941 #endif /* not DOS_NT */
4942 #endif /* not VMS */
4946 #ifdef CLASH_DETECTION
4948 if (!auto_saving
) unlock_file (lockname
);
4950 #endif /* CLASH_DETECTION */
4952 report_file_error ("Opening output file", Fcons (filename
, Qnil
));
4955 record_unwind_protect (close_file_unwind
, make_number (desc
));
4957 if (!NILP (append
) && !NILP (Ffile_regular_p (filename
)))
4961 if (NUMBERP (append
))
4962 ret
= lseek (desc
, XINT (append
), 1);
4964 ret
= lseek (desc
, 0, 2);
4967 #ifdef CLASH_DETECTION
4968 if (!auto_saving
) unlock_file (lockname
);
4969 #endif /* CLASH_DETECTION */
4971 report_file_error ("Lseek error", Fcons (filename
, Qnil
));
4979 * Kludge Warning: The VMS C RTL likes to insert carriage returns
4980 * if we do writes that don't end with a carriage return. Furthermore
4981 * it cannot handle writes of more then 16K. The modified
4982 * version of "sys_write" in SYSDEP.C (see comment there) copes with
4983 * this EXCEPT for the last record (iff it doesn't end with a carriage
4984 * return). This implies that if your buffer doesn't end with a carriage
4985 * return, you get one free... tough. However it also means that if
4986 * we make two calls to sys_write (a la the following code) you can
4987 * get one at the gap as well. The easiest way to fix this (honest)
4988 * is to move the gap to the next newline (or the end of the buffer).
4993 if (GPT
> BEG
&& GPT_ADDR
[-1] != '\n')
4994 move_gap (find_next_newline (GPT
, 1));
4996 /* Whether VMS or not, we must move the gap to the next of newline
4997 when we must put designation sequences at beginning of line. */
4998 if (INTEGERP (start
)
4999 && coding
.type
== coding_type_iso2022
5000 && coding
.flags
& CODING_FLAG_ISO_DESIGNATE_AT_BOL
5001 && GPT
> BEG
&& GPT_ADDR
[-1] != '\n')
5003 int opoint
= PT
, opoint_byte
= PT_BYTE
;
5004 scan_newline (PT
, PT_BYTE
, ZV
, ZV_BYTE
, 1, 0);
5005 move_gap_both (PT
, PT_BYTE
);
5006 SET_PT_BOTH (opoint
, opoint_byte
);
5013 if (STRINGP (start
))
5015 failure
= 0 > a_write (desc
, start
, 0, SCHARS (start
),
5016 &annotations
, &coding
);
5019 else if (XINT (start
) != XINT (end
))
5021 tem
= CHAR_TO_BYTE (XINT (start
));
5023 if (XINT (start
) < GPT
)
5025 failure
= 0 > a_write (desc
, Qnil
, XINT (start
),
5026 min (GPT
, XINT (end
)) - XINT (start
),
5027 &annotations
, &coding
);
5031 if (XINT (end
) > GPT
&& !failure
)
5033 tem
= max (XINT (start
), GPT
);
5034 failure
= 0 > a_write (desc
, Qnil
, tem
, XINT (end
) - tem
,
5035 &annotations
, &coding
);
5041 /* If file was empty, still need to write the annotations */
5042 coding
.mode
|= CODING_MODE_LAST_BLOCK
;
5043 failure
= 0 > a_write (desc
, Qnil
, XINT (end
), 0, &annotations
, &coding
);
5047 if (CODING_REQUIRE_FLUSHING (&coding
)
5048 && !(coding
.mode
& CODING_MODE_LAST_BLOCK
)
5051 /* We have to flush out a data. */
5052 coding
.mode
|= CODING_MODE_LAST_BLOCK
;
5053 failure
= 0 > e_write (desc
, Qnil
, 0, 0, &coding
);
5060 /* Note fsync appears to change the modtime on BSD4.2 (both vax and sun).
5061 Disk full in NFS may be reported here. */
5062 /* mib says that closing the file will try to write as fast as NFS can do
5063 it, and that means the fsync here is not crucial for autosave files. */
5064 if (!auto_saving
&& fsync (desc
) < 0)
5066 /* If fsync fails with EINTR, don't treat that as serious. */
5068 failure
= 1, save_errno
= errno
;
5072 /* Spurious "file has changed on disk" warnings have been
5073 observed on Suns as well.
5074 It seems that `close' can change the modtime, under nfs.
5076 (This has supposedly been fixed in Sunos 4,
5077 but who knows about all the other machines with NFS?) */
5080 /* On VMS and APOLLO, must do the stat after the close
5081 since closing changes the modtime. */
5084 /* Recall that #if defined does not work on VMS. */
5091 /* NFS can report a write failure now. */
5092 if (emacs_close (desc
) < 0)
5093 failure
= 1, save_errno
= errno
;
5096 /* If we wrote to a temporary name and had no errors, rename to real name. */
5100 failure
= (rename (fn
, fname
) != 0), save_errno
= errno
;
5108 /* Discard the unwind protect for close_file_unwind. */
5109 specpdl_ptr
= specpdl
+ count1
;
5110 /* Restore the original current buffer. */
5111 visit_file
= unbind_to (count
, visit_file
);
5113 #ifdef CLASH_DETECTION
5115 unlock_file (lockname
);
5116 #endif /* CLASH_DETECTION */
5118 /* Do this before reporting IO error
5119 to avoid a "file has changed on disk" warning on
5120 next attempt to save. */
5122 current_buffer
->modtime
= st
.st_mtime
;
5125 error ("IO error writing %s: %s", SDATA (filename
),
5126 emacs_strerror (save_errno
));
5130 SAVE_MODIFF
= MODIFF
;
5131 XSETFASTINT (current_buffer
->save_length
, Z
- BEG
);
5132 current_buffer
->filename
= visit_file
;
5133 update_mode_lines
++;
5139 message_with_string ("Wrote %s", visit_file
, 1);
5144 Lisp_Object
merge ();
5146 DEFUN ("car-less-than-car", Fcar_less_than_car
, Scar_less_than_car
, 2, 2, 0,
5147 doc
: /* Return t if (car A) is numerically less than (car B). */)
5151 return Flss (Fcar (a
), Fcar (b
));
5154 /* Build the complete list of annotations appropriate for writing out
5155 the text between START and END, by calling all the functions in
5156 write-region-annotate-functions and merging the lists they return.
5157 If one of these functions switches to a different buffer, we assume
5158 that buffer contains altered text. Therefore, the caller must
5159 make sure to restore the current buffer in all cases,
5160 as save-excursion would do. */
5163 build_annotations (start
, end
)
5164 Lisp_Object start
, end
;
5166 Lisp_Object annotations
;
5168 struct gcpro gcpro1
, gcpro2
;
5169 Lisp_Object original_buffer
;
5172 XSETBUFFER (original_buffer
, current_buffer
);
5175 p
= Vwrite_region_annotate_functions
;
5176 GCPRO2 (annotations
, p
);
5179 struct buffer
*given_buffer
= current_buffer
;
5180 Vwrite_region_annotations_so_far
= annotations
;
5181 res
= call2 (XCAR (p
), start
, end
);
5182 /* If the function makes a different buffer current,
5183 assume that means this buffer contains altered text to be output.
5184 Reset START and END from the buffer bounds
5185 and discard all previous annotations because they should have
5186 been dealt with by this function. */
5187 if (current_buffer
!= given_buffer
)
5189 XSETFASTINT (start
, BEGV
);
5190 XSETFASTINT (end
, ZV
);
5193 Flength (res
); /* Check basic validity of return value */
5194 annotations
= merge (annotations
, res
, Qcar_less_than_car
);
5198 /* Now do the same for annotation functions implied by the file-format */
5199 if (auto_saving
&& (!EQ (Vauto_save_file_format
, Qt
)))
5200 p
= Vauto_save_file_format
;
5202 p
= current_buffer
->file_format
;
5203 for (i
= 0; CONSP (p
); p
= XCDR (p
), ++i
)
5205 struct buffer
*given_buffer
= current_buffer
;
5207 Vwrite_region_annotations_so_far
= annotations
;
5209 /* Value is either a list of annotations or nil if the function
5210 has written annotations to a temporary buffer, which is now
5212 res
= call5 (Qformat_annotate_function
, XCAR (p
), start
, end
,
5213 original_buffer
, make_number (i
));
5214 if (current_buffer
!= given_buffer
)
5216 XSETFASTINT (start
, BEGV
);
5217 XSETFASTINT (end
, ZV
);
5222 annotations
= merge (annotations
, res
, Qcar_less_than_car
);
5230 build_annotations_2 (start
, end
, pre_write_conversion
, annotations
)
5231 Lisp_Object start
, end
, pre_write_conversion
, annotations
;
5233 struct gcpro gcpro1
;
5236 GCPRO1 (annotations
);
5237 /* At last, do the same for the function PRE_WRITE_CONVERSION
5238 implied by the current coding-system. */
5239 if (!NILP (pre_write_conversion
))
5241 struct buffer
*given_buffer
= current_buffer
;
5242 Vwrite_region_annotations_so_far
= annotations
;
5243 res
= call2 (pre_write_conversion
, start
, end
);
5245 annotations
= (current_buffer
!= given_buffer
5247 : merge (annotations
, res
, Qcar_less_than_car
));
5254 /* Write to descriptor DESC the NCHARS chars starting at POS of STRING.
5255 If STRING is nil, POS is the character position in the current buffer.
5256 Intersperse with them the annotations from *ANNOT
5257 which fall within the range of POS to POS + NCHARS,
5258 each at its appropriate position.
5260 We modify *ANNOT by discarding elements as we use them up.
5262 The return value is negative in case of system call failure. */
5265 a_write (desc
, string
, pos
, nchars
, annot
, coding
)
5268 register int nchars
;
5271 struct coding_system
*coding
;
5275 int lastpos
= pos
+ nchars
;
5277 while (NILP (*annot
) || CONSP (*annot
))
5279 tem
= Fcar_safe (Fcar (*annot
));
5282 nextpos
= XFASTINT (tem
);
5284 /* If there are no more annotations in this range,
5285 output the rest of the range all at once. */
5286 if (! (nextpos
>= pos
&& nextpos
<= lastpos
))
5287 return e_write (desc
, string
, pos
, lastpos
, coding
);
5289 /* Output buffer text up to the next annotation's position. */
5292 if (0 > e_write (desc
, string
, pos
, nextpos
, coding
))
5296 /* Output the annotation. */
5297 tem
= Fcdr (Fcar (*annot
));
5300 if (0 > e_write (desc
, tem
, 0, SCHARS (tem
), coding
))
5303 *annot
= Fcdr (*annot
);
5308 #ifndef WRITE_BUF_SIZE
5309 #define WRITE_BUF_SIZE (16 * 1024)
5312 /* Write text in the range START and END into descriptor DESC,
5313 encoding them with coding system CODING. If STRING is nil, START
5314 and END are character positions of the current buffer, else they
5315 are indexes to the string STRING. */
5318 e_write (desc
, string
, start
, end
, coding
)
5322 struct coding_system
*coding
;
5324 register char *addr
;
5325 register int nbytes
;
5326 char buf
[WRITE_BUF_SIZE
];
5330 coding
->composing
= COMPOSITION_DISABLED
;
5331 if (coding
->composing
!= COMPOSITION_DISABLED
)
5332 coding_save_composition (coding
, start
, end
, string
);
5334 if (STRINGP (string
))
5336 addr
= SDATA (string
);
5337 nbytes
= SBYTES (string
);
5338 coding
->src_multibyte
= STRING_MULTIBYTE (string
);
5340 else if (start
< end
)
5342 /* It is assured that the gap is not in the range START and END-1. */
5343 addr
= CHAR_POS_ADDR (start
);
5344 nbytes
= CHAR_TO_BYTE (end
) - CHAR_TO_BYTE (start
);
5345 coding
->src_multibyte
5346 = !NILP (current_buffer
->enable_multibyte_characters
);
5352 coding
->src_multibyte
= 1;
5355 /* We used to have a code for handling selective display here. But,
5356 now it is handled within encode_coding. */
5361 result
= encode_coding (coding
, addr
, buf
, nbytes
, WRITE_BUF_SIZE
);
5362 if (coding
->produced
> 0)
5364 coding
->produced
-= emacs_write (desc
, buf
, coding
->produced
);
5365 if (coding
->produced
)
5371 nbytes
-= coding
->consumed
;
5372 addr
+= coding
->consumed
;
5373 if (result
== CODING_FINISH_INSUFFICIENT_SRC
5376 /* The source text ends by an incomplete multibyte form.
5377 There's no way other than write it out as is. */
5378 nbytes
-= emacs_write (desc
, addr
, nbytes
);
5387 start
+= coding
->consumed_char
;
5388 if (coding
->cmp_data
)
5389 coding_adjust_composition_offset (coding
, start
);
5392 if (coding
->cmp_data
)
5393 coding_free_composition_data (coding
);
5398 DEFUN ("verify-visited-file-modtime", Fverify_visited_file_modtime
,
5399 Sverify_visited_file_modtime
, 1, 1, 0,
5400 doc
: /* Return t if last mod time of BUF's visited file matches what BUF records.
5401 This means that the file has not been changed since it was visited or saved. */)
5407 Lisp_Object handler
;
5408 Lisp_Object filename
;
5413 if (!STRINGP (b
->filename
)) return Qt
;
5414 if (b
->modtime
== 0) return Qt
;
5416 /* If the file name has special constructs in it,
5417 call the corresponding file handler. */
5418 handler
= Ffind_file_name_handler (b
->filename
,
5419 Qverify_visited_file_modtime
);
5420 if (!NILP (handler
))
5421 return call2 (handler
, Qverify_visited_file_modtime
, buf
);
5423 filename
= ENCODE_FILE (b
->filename
);
5425 if (stat (SDATA (filename
), &st
) < 0)
5427 /* If the file doesn't exist now and didn't exist before,
5428 we say that it isn't modified, provided the error is a tame one. */
5429 if (errno
== ENOENT
|| errno
== EACCES
|| errno
== ENOTDIR
)
5434 if (st
.st_mtime
== b
->modtime
5435 /* If both are positive, accept them if they are off by one second. */
5436 || (st
.st_mtime
> 0 && b
->modtime
> 0
5437 && (st
.st_mtime
== b
->modtime
+ 1
5438 || st
.st_mtime
== b
->modtime
- 1)))
5443 DEFUN ("clear-visited-file-modtime", Fclear_visited_file_modtime
,
5444 Sclear_visited_file_modtime
, 0, 0, 0,
5445 doc
: /* Clear out records of last mod time of visited file.
5446 Next attempt to save will certainly not complain of a discrepancy. */)
5449 current_buffer
->modtime
= 0;
5453 DEFUN ("visited-file-modtime", Fvisited_file_modtime
,
5454 Svisited_file_modtime
, 0, 0, 0,
5455 doc
: /* Return the current buffer's recorded visited file modification time.
5456 The value is a list of the form (HIGH . LOW), like the time values
5457 that `file-attributes' returns. */)
5460 return long_to_cons ((unsigned long) current_buffer
->modtime
);
5463 DEFUN ("set-visited-file-modtime", Fset_visited_file_modtime
,
5464 Sset_visited_file_modtime
, 0, 1, 0,
5465 doc
: /* Update buffer's recorded modification time from the visited file's time.
5466 Useful if the buffer was not read from the file normally
5467 or if the file itself has been changed for some known benign reason.
5468 An argument specifies the modification time value to use
5469 \(instead of that of the visited file), in the form of a list
5470 \(HIGH . LOW) or (HIGH LOW). */)
5472 Lisp_Object time_list
;
5474 if (!NILP (time_list
))
5475 current_buffer
->modtime
= cons_to_long (time_list
);
5478 register Lisp_Object filename
;
5480 Lisp_Object handler
;
5482 filename
= Fexpand_file_name (current_buffer
->filename
, Qnil
);
5484 /* If the file name has special constructs in it,
5485 call the corresponding file handler. */
5486 handler
= Ffind_file_name_handler (filename
, Qset_visited_file_modtime
);
5487 if (!NILP (handler
))
5488 /* The handler can find the file name the same way we did. */
5489 return call2 (handler
, Qset_visited_file_modtime
, Qnil
);
5491 filename
= ENCODE_FILE (filename
);
5493 if (stat (SDATA (filename
), &st
) >= 0)
5494 current_buffer
->modtime
= st
.st_mtime
;
5501 auto_save_error (error
)
5504 Lisp_Object args
[3], msg
;
5506 struct gcpro gcpro1
;
5510 args
[0] = build_string ("Auto-saving %s: %s");
5511 args
[1] = current_buffer
->name
;
5512 args
[2] = Ferror_message_string (error
);
5513 msg
= Fformat (3, args
);
5515 nbytes
= SBYTES (msg
);
5517 for (i
= 0; i
< 3; ++i
)
5520 message2 (SDATA (msg
), nbytes
, STRING_MULTIBYTE (msg
));
5522 message2_nolog (SDATA (msg
), nbytes
, STRING_MULTIBYTE (msg
));
5523 Fsleep_for (make_number (1), Qnil
);
5535 /* Get visited file's mode to become the auto save file's mode. */
5536 if (! NILP (current_buffer
->filename
)
5537 && stat (SDATA (current_buffer
->filename
), &st
) >= 0)
5538 /* But make sure we can overwrite it later! */
5539 auto_save_mode_bits
= st
.st_mode
| 0600;
5541 auto_save_mode_bits
= 0666;
5544 Fwrite_region (Qnil
, Qnil
,
5545 current_buffer
->auto_save_file_name
,
5546 Qnil
, Qlambda
, Qnil
, Qnil
);
5550 do_auto_save_unwind (stream
) /* used as unwind-protect function */
5555 fclose ((FILE *) (XFASTINT (XCAR (stream
)) << 16
5556 | XFASTINT (XCDR (stream
))));
5561 do_auto_save_unwind_1 (value
) /* used as unwind-protect function */
5564 minibuffer_auto_raise
= XINT (value
);
5569 do_auto_save_make_dir (dir
)
5572 return call2 (Qmake_directory
, dir
, Qt
);
5576 do_auto_save_eh (ignore
)
5582 DEFUN ("do-auto-save", Fdo_auto_save
, Sdo_auto_save
, 0, 2, "",
5583 doc
: /* Auto-save all buffers that need it.
5584 This is all buffers that have auto-saving enabled
5585 and are changed since last auto-saved.
5586 Auto-saving writes the buffer into a file
5587 so that your editing is not lost if the system crashes.
5588 This file is not the file you visited; that changes only when you save.
5589 Normally we run the normal hook `auto-save-hook' before saving.
5591 A non-nil NO-MESSAGE argument means do not print any message if successful.
5592 A non-nil CURRENT-ONLY argument means save only current buffer. */)
5593 (no_message
, current_only
)
5594 Lisp_Object no_message
, current_only
;
5596 struct buffer
*old
= current_buffer
, *b
;
5597 Lisp_Object tail
, buf
;
5599 int do_handled_files
;
5602 Lisp_Object lispstream
;
5603 int count
= SPECPDL_INDEX ();
5604 int orig_minibuffer_auto_raise
= minibuffer_auto_raise
;
5605 int old_message_p
= 0;
5607 if (max_specpdl_size
< specpdl_size
+ 40)
5608 max_specpdl_size
= specpdl_size
+ 40;
5613 if (NILP (no_message
))
5615 old_message_p
= push_message ();
5616 record_unwind_protect (pop_message_unwind
, Qnil
);
5619 /* Ordinarily don't quit within this function,
5620 but don't make it impossible to quit (in case we get hung in I/O). */
5624 /* No GCPRO needed, because (when it matters) all Lisp_Object variables
5625 point to non-strings reached from Vbuffer_alist. */
5627 if (!NILP (Vrun_hooks
))
5628 call1 (Vrun_hooks
, intern ("auto-save-hook"));
5630 if (STRINGP (Vauto_save_list_file_name
))
5632 Lisp_Object listfile
;
5634 listfile
= Fexpand_file_name (Vauto_save_list_file_name
, Qnil
);
5636 /* Don't try to create the directory when shutting down Emacs,
5637 because creating the directory might signal an error, and
5638 that would leave Emacs in a strange state. */
5639 if (!NILP (Vrun_hooks
))
5642 dir
= Ffile_name_directory (listfile
);
5643 if (NILP (Ffile_directory_p (dir
)))
5644 internal_condition_case_1 (do_auto_save_make_dir
,
5645 dir
, Fcons (Fcons (Qfile_error
, Qnil
), Qnil
),
5649 stream
= fopen (SDATA (listfile
), "w");
5652 /* Arrange to close that file whether or not we get an error.
5653 Also reset auto_saving to 0. */
5654 lispstream
= Fcons (Qnil
, Qnil
);
5655 XSETCARFASTINT (lispstream
, (EMACS_UINT
)stream
>> 16);
5656 XSETCDRFASTINT (lispstream
, (EMACS_UINT
)stream
& 0xffff);
5667 record_unwind_protect (do_auto_save_unwind
, lispstream
);
5668 record_unwind_protect (do_auto_save_unwind_1
,
5669 make_number (minibuffer_auto_raise
));
5670 minibuffer_auto_raise
= 0;
5673 /* First, save all files which don't have handlers. If Emacs is
5674 crashing, the handlers may tweak what is causing Emacs to crash
5675 in the first place, and it would be a shame if Emacs failed to
5676 autosave perfectly ordinary files because it couldn't handle some
5678 for (do_handled_files
= 0; do_handled_files
< 2; do_handled_files
++)
5679 for (tail
= Vbuffer_alist
; GC_CONSP (tail
); tail
= XCDR (tail
))
5681 buf
= XCDR (XCAR (tail
));
5684 /* Record all the buffers that have auto save mode
5685 in the special file that lists them. For each of these buffers,
5686 Record visited name (if any) and auto save name. */
5687 if (STRINGP (b
->auto_save_file_name
)
5688 && stream
!= NULL
&& do_handled_files
== 0)
5690 if (!NILP (b
->filename
))
5692 fwrite (SDATA (b
->filename
), 1,
5693 SBYTES (b
->filename
), stream
);
5695 putc ('\n', stream
);
5696 fwrite (SDATA (b
->auto_save_file_name
), 1,
5697 SBYTES (b
->auto_save_file_name
), stream
);
5698 putc ('\n', stream
);
5701 if (!NILP (current_only
)
5702 && b
!= current_buffer
)
5705 /* Don't auto-save indirect buffers.
5706 The base buffer takes care of it. */
5710 /* Check for auto save enabled
5711 and file changed since last auto save
5712 and file changed since last real save. */
5713 if (STRINGP (b
->auto_save_file_name
)
5714 && BUF_SAVE_MODIFF (b
) < BUF_MODIFF (b
)
5715 && b
->auto_save_modified
< BUF_MODIFF (b
)
5716 /* -1 means we've turned off autosaving for a while--see below. */
5717 && XINT (b
->save_length
) >= 0
5718 && (do_handled_files
5719 || NILP (Ffind_file_name_handler (b
->auto_save_file_name
,
5722 EMACS_TIME before_time
, after_time
;
5724 EMACS_GET_TIME (before_time
);
5726 /* If we had a failure, don't try again for 20 minutes. */
5727 if (b
->auto_save_failure_time
>= 0
5728 && EMACS_SECS (before_time
) - b
->auto_save_failure_time
< 1200)
5731 if ((XFASTINT (b
->save_length
) * 10
5732 > (BUF_Z (b
) - BUF_BEG (b
)) * 13)
5733 /* A short file is likely to change a large fraction;
5734 spare the user annoying messages. */
5735 && XFASTINT (b
->save_length
) > 5000
5736 /* These messages are frequent and annoying for `*mail*'. */
5737 && !EQ (b
->filename
, Qnil
)
5738 && NILP (no_message
))
5740 /* It has shrunk too much; turn off auto-saving here. */
5741 minibuffer_auto_raise
= orig_minibuffer_auto_raise
;
5742 message_with_string ("Buffer %s has shrunk a lot; auto save disabled in that buffer until next real save",
5744 minibuffer_auto_raise
= 0;
5745 /* Turn off auto-saving until there's a real save,
5746 and prevent any more warnings. */
5747 XSETINT (b
->save_length
, -1);
5748 Fsleep_for (make_number (1), Qnil
);
5751 set_buffer_internal (b
);
5752 if (!auto_saved
&& NILP (no_message
))
5753 message1 ("Auto-saving...");
5754 internal_condition_case (auto_save_1
, Qt
, auto_save_error
);
5756 b
->auto_save_modified
= BUF_MODIFF (b
);
5757 XSETFASTINT (current_buffer
->save_length
, Z
- BEG
);
5758 set_buffer_internal (old
);
5760 EMACS_GET_TIME (after_time
);
5762 /* If auto-save took more than 60 seconds,
5763 assume it was an NFS failure that got a timeout. */
5764 if (EMACS_SECS (after_time
) - EMACS_SECS (before_time
) > 60)
5765 b
->auto_save_failure_time
= EMACS_SECS (after_time
);
5769 /* Prevent another auto save till enough input events come in. */
5770 record_auto_save ();
5772 if (auto_saved
&& NILP (no_message
))
5776 /* If we are going to restore an old message,
5777 give time to read ours. */
5778 sit_for (1, 0, 0, 0, 0);
5782 /* If we displayed a message and then restored a state
5783 with no message, leave a "done" message on the screen. */
5784 message1 ("Auto-saving...done");
5789 /* This restores the message-stack status. */
5790 unbind_to (count
, Qnil
);
5794 DEFUN ("set-buffer-auto-saved", Fset_buffer_auto_saved
,
5795 Sset_buffer_auto_saved
, 0, 0, 0,
5796 doc
: /* Mark current buffer as auto-saved with its current text.
5797 No auto-save file will be written until the buffer changes again. */)
5800 current_buffer
->auto_save_modified
= MODIFF
;
5801 XSETFASTINT (current_buffer
->save_length
, Z
- BEG
);
5802 current_buffer
->auto_save_failure_time
= -1;
5806 DEFUN ("clear-buffer-auto-save-failure", Fclear_buffer_auto_save_failure
,
5807 Sclear_buffer_auto_save_failure
, 0, 0, 0,
5808 doc
: /* Clear any record of a recent auto-save failure in the current buffer. */)
5811 current_buffer
->auto_save_failure_time
= -1;
5815 DEFUN ("recent-auto-save-p", Frecent_auto_save_p
, Srecent_auto_save_p
,
5817 doc
: /* Return t if buffer has been auto-saved since last read in or saved. */)
5820 return (SAVE_MODIFF
< current_buffer
->auto_save_modified
) ? Qt
: Qnil
;
5823 /* Reading and completing file names */
5824 extern Lisp_Object
Ffile_name_completion (), Ffile_name_all_completions ();
5826 /* In the string VAL, change each $ to $$ and return the result. */
5829 double_dollars (val
)
5832 register const unsigned char *old
;
5833 register unsigned char *new;
5837 osize
= SBYTES (val
);
5839 /* Count the number of $ characters. */
5840 for (n
= osize
, count
= 0, old
= SDATA (val
); n
> 0; n
--)
5841 if (*old
++ == '$') count
++;
5845 val
= make_uninit_multibyte_string (SCHARS (val
) + count
,
5848 for (n
= osize
; n
> 0; n
--)
5862 read_file_name_cleanup (arg
)
5865 return (current_buffer
->directory
= arg
);
5868 DEFUN ("read-file-name-internal", Fread_file_name_internal
, Sread_file_name_internal
,
5870 doc
: /* Internal subroutine for read-file-name. Do not call this. */)
5871 (string
, dir
, action
)
5872 Lisp_Object string
, dir
, action
;
5873 /* action is nil for complete, t for return list of completions,
5874 lambda for verify final value */
5876 Lisp_Object name
, specdir
, realdir
, val
, orig_string
;
5878 struct gcpro gcpro1
, gcpro2
, gcpro3
, gcpro4
, gcpro5
;
5880 CHECK_STRING (string
);
5887 /* No need to protect ACTION--we only compare it with t and nil. */
5888 GCPRO5 (string
, realdir
, name
, specdir
, orig_string
);
5890 if (SCHARS (string
) == 0)
5892 if (EQ (action
, Qlambda
))
5900 orig_string
= string
;
5901 string
= Fsubstitute_in_file_name (string
);
5902 changed
= NILP (Fstring_equal (string
, orig_string
));
5903 name
= Ffile_name_nondirectory (string
);
5904 val
= Ffile_name_directory (string
);
5906 realdir
= Fexpand_file_name (val
, realdir
);
5911 specdir
= Ffile_name_directory (string
);
5912 val
= Ffile_name_completion (name
, realdir
);
5917 return double_dollars (string
);
5921 if (!NILP (specdir
))
5922 val
= concat2 (specdir
, val
);
5924 return double_dollars (val
);
5927 #endif /* not VMS */
5931 if (EQ (action
, Qt
))
5933 Lisp_Object all
= Ffile_name_all_completions (name
, realdir
);
5937 if (NILP (Vread_file_name_predicate
)
5938 || EQ (Vread_file_name_predicate
, Qfile_exists_p
))
5942 if (EQ (Vread_file_name_predicate
, Qfile_directory_p
))
5944 /* Brute-force speed up for directory checking:
5945 Discard strings which don't end in a slash. */
5946 for (comp
= Qnil
; CONSP (all
); all
= XCDR (all
))
5948 Lisp_Object tem
= XCAR (all
);
5950 if (STRINGP (tem
) &&
5951 (len
= SCHARS (tem
), len
> 0) &&
5952 IS_DIRECTORY_SEP (SREF (tem
, len
-1)))
5953 comp
= Fcons (tem
, comp
);
5959 /* Must do it the hard (and slow) way. */
5960 GCPRO3 (all
, comp
, specdir
);
5961 count
= SPECPDL_INDEX ();
5962 record_unwind_protect (read_file_name_cleanup
, current_buffer
->directory
);
5963 current_buffer
->directory
= realdir
;
5964 for (comp
= Qnil
; CONSP (all
); all
= XCDR (all
))
5965 if (!NILP (call1 (Vread_file_name_predicate
, XCAR (all
))))
5966 comp
= Fcons (XCAR (all
), comp
);
5967 unbind_to (count
, Qnil
);
5970 return Fnreverse (comp
);
5973 /* Only other case actually used is ACTION = lambda */
5975 /* Supposedly this helps commands such as `cd' that read directory names,
5976 but can someone explain how it helps them? -- RMS */
5977 if (SCHARS (name
) == 0)
5980 if (!NILP (Vread_file_name_predicate
))
5981 return call1 (Vread_file_name_predicate
, string
);
5982 return Ffile_exists_p (string
);
5985 DEFUN ("read-file-name", Fread_file_name
, Sread_file_name
, 1, 6, 0,
5986 doc
: /* Read file name, prompting with PROMPT and completing in directory DIR.
5987 Value is not expanded---you must call `expand-file-name' yourself.
5988 Default name to DEFAULT-FILENAME if user enters a null string.
5989 (If DEFAULT-FILENAME is omitted, the visited file name is used,
5990 except that if INITIAL is specified, that combined with DIR is used.)
5991 Fourth arg MUSTMATCH non-nil means require existing file's name.
5992 Non-nil and non-t means also require confirmation after completion.
5993 Fifth arg INITIAL specifies text to start with.
5994 If optional sixth arg PREDICATE is non-nil, possible completions and the
5995 resulting file name must satisfy (funcall PREDICATE NAME).
5996 DIR defaults to current buffer's directory default.
5998 If this command was invoked with the mouse, use a file dialog box if
5999 `use-dialog-box' is non-nil, and the window system or X toolkit in use
6000 provides a file dialog box. */)
6001 (prompt
, dir
, default_filename
, mustmatch
, initial
, predicate
)
6002 Lisp_Object prompt
, dir
, default_filename
, mustmatch
, initial
, predicate
;
6004 Lisp_Object val
, insdef
, tem
;
6005 struct gcpro gcpro1
, gcpro2
;
6006 register char *homedir
;
6007 int replace_in_history
= 0;
6008 int add_to_history
= 0;
6012 dir
= current_buffer
->directory
;
6013 if (NILP (default_filename
))
6014 default_filename
= !NILP (initial
)
6015 ? Fexpand_file_name (initial
, dir
)
6016 : current_buffer
->filename
;
6018 /* If dir starts with user's homedir, change that to ~. */
6019 homedir
= (char *) egetenv ("HOME");
6021 /* homedir can be NULL in temacs, since Vprocess_environment is not
6022 yet set up. We shouldn't crash in that case. */
6025 homedir
= strcpy (alloca (strlen (homedir
) + 1), homedir
);
6026 CORRECT_DIR_SEPS (homedir
);
6031 && !strncmp (homedir
, SDATA (dir
), strlen (homedir
))
6032 && IS_DIRECTORY_SEP (SREF (dir
, strlen (homedir
))))
6034 dir
= make_string (SDATA (dir
) + strlen (homedir
) - 1,
6035 SBYTES (dir
) - strlen (homedir
) + 1);
6038 /* Likewise for default_filename. */
6040 && STRINGP (default_filename
)
6041 && !strncmp (homedir
, SDATA (default_filename
), strlen (homedir
))
6042 && IS_DIRECTORY_SEP (SREF (default_filename
, strlen (homedir
))))
6045 = make_string (SDATA (default_filename
) + strlen (homedir
) - 1,
6046 SBYTES (default_filename
) - strlen (homedir
) + 1);
6047 SSET (default_filename
, 0, '~');
6049 if (!NILP (default_filename
))
6051 CHECK_STRING (default_filename
);
6052 default_filename
= double_dollars (default_filename
);
6055 if (insert_default_directory
&& STRINGP (dir
))
6058 if (!NILP (initial
))
6060 Lisp_Object args
[2], pos
;
6064 insdef
= Fconcat (2, args
);
6065 pos
= make_number (SCHARS (double_dollars (dir
)));
6066 insdef
= Fcons (double_dollars (insdef
), pos
);
6069 insdef
= double_dollars (insdef
);
6071 else if (STRINGP (initial
))
6072 insdef
= Fcons (double_dollars (initial
), make_number (0));
6076 if (!NILP (Vread_file_name_function
))
6078 Lisp_Object args
[7];
6080 GCPRO2 (insdef
, default_filename
);
6081 args
[0] = Vread_file_name_function
;
6084 args
[3] = default_filename
;
6085 args
[4] = mustmatch
;
6087 args
[6] = predicate
;
6088 RETURN_UNGCPRO (Ffuncall (7, args
));
6091 count
= SPECPDL_INDEX ();
6093 specbind (intern ("completion-ignore-case"), Qt
);
6096 specbind (intern ("minibuffer-completing-file-name"), Qt
);
6097 specbind (intern ("read-file-name-predicate"),
6098 (NILP (predicate
) ? Qfile_exists_p
: predicate
));
6100 GCPRO2 (insdef
, default_filename
);
6102 #if defined (USE_MOTIF) || defined (HAVE_NTGUI)
6103 if ((NILP (last_nonmenu_event
) || CONSP (last_nonmenu_event
))
6107 /* If DIR contains a file name, split it. */
6109 file
= Ffile_name_nondirectory (dir
);
6110 if (SCHARS (file
) && NILP (default_filename
))
6112 default_filename
= file
;
6113 dir
= Ffile_name_directory (dir
);
6115 if (!NILP(default_filename
))
6116 default_filename
= Fexpand_file_name (default_filename
, dir
);
6117 val
= Fx_file_dialog (prompt
, dir
, default_filename
, mustmatch
);
6122 val
= Fcompleting_read (prompt
, intern ("read-file-name-internal"),
6123 dir
, mustmatch
, insdef
,
6124 Qfile_name_history
, default_filename
, Qnil
);
6126 tem
= Fsymbol_value (Qfile_name_history
);
6127 if (CONSP (tem
) && EQ (XCAR (tem
), val
))
6128 replace_in_history
= 1;
6130 /* If Fcompleting_read returned the inserted default string itself
6131 (rather than a new string with the same contents),
6132 it has to mean that the user typed RET with the minibuffer empty.
6133 In that case, we really want to return ""
6134 so that commands such as set-visited-file-name can distinguish. */
6135 if (EQ (val
, default_filename
))
6137 /* In this case, Fcompleting_read has not added an element
6138 to the history. Maybe we should. */
6139 if (! replace_in_history
)
6145 unbind_to (count
, Qnil
);
6148 error ("No file name specified");
6150 tem
= Fstring_equal (val
, CONSP (insdef
) ? XCAR (insdef
) : insdef
);
6152 if (!NILP (tem
) && !NILP (default_filename
))
6153 val
= default_filename
;
6154 else if (SCHARS (val
) == 0 && NILP (insdef
))
6156 if (!NILP (default_filename
))
6157 val
= default_filename
;
6159 error ("No default file name");
6161 val
= Fsubstitute_in_file_name (val
);
6163 if (replace_in_history
)
6164 /* Replace what Fcompleting_read added to the history
6165 with what we will actually return. */
6166 XSETCAR (Fsymbol_value (Qfile_name_history
), double_dollars (val
));
6167 else if (add_to_history
)
6169 /* Add the value to the history--but not if it matches
6170 the last value already there. */
6171 Lisp_Object val1
= double_dollars (val
);
6172 tem
= Fsymbol_value (Qfile_name_history
);
6173 if (! CONSP (tem
) || NILP (Fequal (XCAR (tem
), val1
)))
6174 Fset (Qfile_name_history
,
6185 /* Must be set before any path manipulation is performed. */
6186 XSETFASTINT (Vdirectory_sep_char
, '/');
6193 Qexpand_file_name
= intern ("expand-file-name");
6194 Qsubstitute_in_file_name
= intern ("substitute-in-file-name");
6195 Qdirectory_file_name
= intern ("directory-file-name");
6196 Qfile_name_directory
= intern ("file-name-directory");
6197 Qfile_name_nondirectory
= intern ("file-name-nondirectory");
6198 Qunhandled_file_name_directory
= intern ("unhandled-file-name-directory");
6199 Qfile_name_as_directory
= intern ("file-name-as-directory");
6200 Qcopy_file
= intern ("copy-file");
6201 Qmake_directory_internal
= intern ("make-directory-internal");
6202 Qmake_directory
= intern ("make-directory");
6203 Qdelete_directory
= intern ("delete-directory");
6204 Qdelete_file
= intern ("delete-file");
6205 Qrename_file
= intern ("rename-file");
6206 Qadd_name_to_file
= intern ("add-name-to-file");
6207 Qmake_symbolic_link
= intern ("make-symbolic-link");
6208 Qfile_exists_p
= intern ("file-exists-p");
6209 Qfile_executable_p
= intern ("file-executable-p");
6210 Qfile_readable_p
= intern ("file-readable-p");
6211 Qfile_writable_p
= intern ("file-writable-p");
6212 Qfile_symlink_p
= intern ("file-symlink-p");
6213 Qaccess_file
= intern ("access-file");
6214 Qfile_directory_p
= intern ("file-directory-p");
6215 Qfile_regular_p
= intern ("file-regular-p");
6216 Qfile_accessible_directory_p
= intern ("file-accessible-directory-p");
6217 Qfile_modes
= intern ("file-modes");
6218 Qset_file_modes
= intern ("set-file-modes");
6219 Qfile_newer_than_file_p
= intern ("file-newer-than-file-p");
6220 Qinsert_file_contents
= intern ("insert-file-contents");
6221 Qwrite_region
= intern ("write-region");
6222 Qverify_visited_file_modtime
= intern ("verify-visited-file-modtime");
6223 Qset_visited_file_modtime
= intern ("set-visited-file-modtime");
6225 staticpro (&Qexpand_file_name
);
6226 staticpro (&Qsubstitute_in_file_name
);
6227 staticpro (&Qdirectory_file_name
);
6228 staticpro (&Qfile_name_directory
);
6229 staticpro (&Qfile_name_nondirectory
);
6230 staticpro (&Qunhandled_file_name_directory
);
6231 staticpro (&Qfile_name_as_directory
);
6232 staticpro (&Qcopy_file
);
6233 staticpro (&Qmake_directory_internal
);
6234 staticpro (&Qmake_directory
);
6235 staticpro (&Qdelete_directory
);
6236 staticpro (&Qdelete_file
);
6237 staticpro (&Qrename_file
);
6238 staticpro (&Qadd_name_to_file
);
6239 staticpro (&Qmake_symbolic_link
);
6240 staticpro (&Qfile_exists_p
);
6241 staticpro (&Qfile_executable_p
);
6242 staticpro (&Qfile_readable_p
);
6243 staticpro (&Qfile_writable_p
);
6244 staticpro (&Qaccess_file
);
6245 staticpro (&Qfile_symlink_p
);
6246 staticpro (&Qfile_directory_p
);
6247 staticpro (&Qfile_regular_p
);
6248 staticpro (&Qfile_accessible_directory_p
);
6249 staticpro (&Qfile_modes
);
6250 staticpro (&Qset_file_modes
);
6251 staticpro (&Qfile_newer_than_file_p
);
6252 staticpro (&Qinsert_file_contents
);
6253 staticpro (&Qwrite_region
);
6254 staticpro (&Qverify_visited_file_modtime
);
6255 staticpro (&Qset_visited_file_modtime
);
6257 Qfile_name_history
= intern ("file-name-history");
6258 Fset (Qfile_name_history
, Qnil
);
6259 staticpro (&Qfile_name_history
);
6261 Qfile_error
= intern ("file-error");
6262 staticpro (&Qfile_error
);
6263 Qfile_already_exists
= intern ("file-already-exists");
6264 staticpro (&Qfile_already_exists
);
6265 Qfile_date_error
= intern ("file-date-error");
6266 staticpro (&Qfile_date_error
);
6267 Qexcl
= intern ("excl");
6271 Qfind_buffer_file_type
= intern ("find-buffer-file-type");
6272 staticpro (&Qfind_buffer_file_type
);
6275 DEFVAR_LISP ("file-name-coding-system", &Vfile_name_coding_system
,
6276 doc
: /* *Coding system for encoding file names.
6277 If it is nil, `default-file-name-coding-system' (which see) is used. */);
6278 Vfile_name_coding_system
= Qnil
;
6280 DEFVAR_LISP ("default-file-name-coding-system",
6281 &Vdefault_file_name_coding_system
,
6282 doc
: /* Default coding system for encoding file names.
6283 This variable is used only when `file-name-coding-system' is nil.
6285 This variable is set/changed by the command `set-language-environment'.
6286 User should not set this variable manually,
6287 instead use `file-name-coding-system' to get a constant encoding
6288 of file names regardless of the current language environment. */);
6289 Vdefault_file_name_coding_system
= Qnil
;
6291 DEFVAR_LISP ("auto-save-file-format", &Vauto_save_file_format
,
6292 doc
: /* *Format in which to write auto-save files.
6293 Should be a list of symbols naming formats that are defined in `format-alist'.
6294 If it is t, which is the default, auto-save files are written in the
6295 same format as a regular save would use. */);
6296 Vauto_save_file_format
= Qt
;
6298 Qformat_decode
= intern ("format-decode");
6299 staticpro (&Qformat_decode
);
6300 Qformat_annotate_function
= intern ("format-annotate-function");
6301 staticpro (&Qformat_annotate_function
);
6303 Qcar_less_than_car
= intern ("car-less-than-car");
6304 staticpro (&Qcar_less_than_car
);
6306 Fput (Qfile_error
, Qerror_conditions
,
6307 Fcons (Qfile_error
, Fcons (Qerror
, Qnil
)));
6308 Fput (Qfile_error
, Qerror_message
,
6309 build_string ("File error"));
6311 Fput (Qfile_already_exists
, Qerror_conditions
,
6312 Fcons (Qfile_already_exists
,
6313 Fcons (Qfile_error
, Fcons (Qerror
, Qnil
))));
6314 Fput (Qfile_already_exists
, Qerror_message
,
6315 build_string ("File already exists"));
6317 Fput (Qfile_date_error
, Qerror_conditions
,
6318 Fcons (Qfile_date_error
,
6319 Fcons (Qfile_error
, Fcons (Qerror
, Qnil
))));
6320 Fput (Qfile_date_error
, Qerror_message
,
6321 build_string ("Cannot set file date"));
6323 DEFVAR_LISP ("read-file-name-function", &Vread_file_name_function
,
6324 doc
: /* If this is non-nil, `read-file-name' does its work by calling this function. */);
6325 Vread_file_name_function
= Qnil
;
6327 DEFVAR_LISP ("read-file-name-predicate", &Vread_file_name_predicate
,
6328 doc
: /* Current predicate used by `read-file-name-internal'. */);
6329 Vread_file_name_predicate
= Qnil
;
6331 DEFVAR_BOOL ("insert-default-directory", &insert_default_directory
,
6332 doc
: /* *Non-nil means when reading a filename start with default dir in minibuffer. */);
6333 insert_default_directory
= 1;
6335 DEFVAR_BOOL ("vms-stmlf-recfm", &vms_stmlf_recfm
,
6336 doc
: /* *Non-nil means write new files with record format `stmlf'.
6337 nil means use format `var'. This variable is meaningful only on VMS. */);
6338 vms_stmlf_recfm
= 0;
6340 DEFVAR_LISP ("directory-sep-char", &Vdirectory_sep_char
,
6341 doc
: /* Directory separator character for built-in functions that return file names.
6342 The value should be either ?/ or ?\\ (any other value is treated as ?\\).
6343 This variable affects the built-in functions only on Windows,
6344 on other platforms, it is initialized so that Lisp code can find out
6345 what the normal separator is. */);
6347 DEFVAR_LISP ("file-name-handler-alist", &Vfile_name_handler_alist
,
6348 doc
: /* *Alist of elements (REGEXP . HANDLER) for file names handled specially.
6349 If a file name matches REGEXP, then all I/O on that file is done by calling
6352 The first argument given to HANDLER is the name of the I/O primitive
6353 to be handled; the remaining arguments are the arguments that were
6354 passed to that primitive. For example, if you do
6355 (file-exists-p FILENAME)
6356 and FILENAME is handled by HANDLER, then HANDLER is called like this:
6357 (funcall HANDLER 'file-exists-p FILENAME)
6358 The function `find-file-name-handler' checks this list for a handler
6359 for its argument. */);
6360 Vfile_name_handler_alist
= Qnil
;
6362 DEFVAR_LISP ("set-auto-coding-function",
6363 &Vset_auto_coding_function
,
6364 doc
: /* If non-nil, a function to call to decide a coding system of file.
6365 Two arguments are passed to this function: the file name
6366 and the length of a file contents following the point.
6367 This function should return a coding system to decode the file contents.
6368 It should check the file name against `auto-coding-alist'.
6369 If no coding system is decided, it should check a coding system
6370 specified in the heading lines with the format:
6371 -*- ... coding: CODING-SYSTEM; ... -*-
6372 or local variable spec of the tailing lines with `coding:' tag. */);
6373 Vset_auto_coding_function
= Qnil
;
6375 DEFVAR_LISP ("after-insert-file-functions", &Vafter_insert_file_functions
,
6376 doc
: /* A list of functions to be called at the end of `insert-file-contents'.
6377 Each is passed one argument, the number of bytes inserted. It should return
6378 the new byte count, and leave point the same. If `insert-file-contents' is
6379 intercepted by a handler from `file-name-handler-alist', that handler is
6380 responsible for calling the after-insert-file-functions if appropriate. */);
6381 Vafter_insert_file_functions
= Qnil
;
6383 DEFVAR_LISP ("write-region-annotate-functions", &Vwrite_region_annotate_functions
,
6384 doc
: /* A list of functions to be called at the start of `write-region'.
6385 Each is passed two arguments, START and END as for `write-region'.
6386 These are usually two numbers but not always; see the documentation
6387 for `write-region'. The function should return a list of pairs
6388 of the form (POSITION . STRING), consisting of strings to be effectively
6389 inserted at the specified positions of the file being written (1 means to
6390 insert before the first byte written). The POSITIONs must be sorted into
6391 increasing order. If there are several functions in the list, the several
6392 lists are merged destructively. Alternatively, the function can return
6393 with a different buffer current and value nil.*/);
6394 Vwrite_region_annotate_functions
= Qnil
;
6396 DEFVAR_LISP ("write-region-annotations-so-far",
6397 &Vwrite_region_annotations_so_far
,
6398 doc
: /* When an annotation function is called, this holds the previous annotations.
6399 These are the annotations made by other annotation functions
6400 that were already called. See also `write-region-annotate-functions'. */);
6401 Vwrite_region_annotations_so_far
= Qnil
;
6403 DEFVAR_LISP ("inhibit-file-name-handlers", &Vinhibit_file_name_handlers
,
6404 doc
: /* A list of file name handlers that temporarily should not be used.
6405 This applies only to the operation `inhibit-file-name-operation'. */);
6406 Vinhibit_file_name_handlers
= Qnil
;
6408 DEFVAR_LISP ("inhibit-file-name-operation", &Vinhibit_file_name_operation
,
6409 doc
: /* The operation for which `inhibit-file-name-handlers' is applicable. */);
6410 Vinhibit_file_name_operation
= Qnil
;
6412 DEFVAR_LISP ("auto-save-list-file-name", &Vauto_save_list_file_name
,
6413 doc
: /* File name in which we write a list of all auto save file names.
6414 This variable is initialized automatically from `auto-save-list-file-prefix'
6415 shortly after Emacs reads your `.emacs' file, if you have not yet given it
6416 a non-nil value. */);
6417 Vauto_save_list_file_name
= Qnil
;
6419 defsubr (&Sfind_file_name_handler
);
6420 defsubr (&Sfile_name_directory
);
6421 defsubr (&Sfile_name_nondirectory
);
6422 defsubr (&Sunhandled_file_name_directory
);
6423 defsubr (&Sfile_name_as_directory
);
6424 defsubr (&Sdirectory_file_name
);
6425 defsubr (&Smake_temp_name
);
6426 defsubr (&Sexpand_file_name
);
6427 defsubr (&Ssubstitute_in_file_name
);
6428 defsubr (&Scopy_file
);
6429 defsubr (&Smake_directory_internal
);
6430 defsubr (&Sdelete_directory
);
6431 defsubr (&Sdelete_file
);
6432 defsubr (&Srename_file
);
6433 defsubr (&Sadd_name_to_file
);
6435 defsubr (&Smake_symbolic_link
);
6436 #endif /* S_IFLNK */
6438 defsubr (&Sdefine_logical_name
);
6441 defsubr (&Ssysnetunam
);
6442 #endif /* HPUX_NET */
6443 defsubr (&Sfile_name_absolute_p
);
6444 defsubr (&Sfile_exists_p
);
6445 defsubr (&Sfile_executable_p
);
6446 defsubr (&Sfile_readable_p
);
6447 defsubr (&Sfile_writable_p
);
6448 defsubr (&Saccess_file
);
6449 defsubr (&Sfile_symlink_p
);
6450 defsubr (&Sfile_directory_p
);
6451 defsubr (&Sfile_accessible_directory_p
);
6452 defsubr (&Sfile_regular_p
);
6453 defsubr (&Sfile_modes
);
6454 defsubr (&Sset_file_modes
);
6455 defsubr (&Sset_default_file_modes
);
6456 defsubr (&Sdefault_file_modes
);
6457 defsubr (&Sfile_newer_than_file_p
);
6458 defsubr (&Sinsert_file_contents
);
6459 defsubr (&Swrite_region
);
6460 defsubr (&Scar_less_than_car
);
6461 defsubr (&Sverify_visited_file_modtime
);
6462 defsubr (&Sclear_visited_file_modtime
);
6463 defsubr (&Svisited_file_modtime
);
6464 defsubr (&Sset_visited_file_modtime
);
6465 defsubr (&Sdo_auto_save
);
6466 defsubr (&Sset_buffer_auto_saved
);
6467 defsubr (&Sclear_buffer_auto_save_failure
);
6468 defsubr (&Srecent_auto_save_p
);
6470 defsubr (&Sread_file_name_internal
);
6471 defsubr (&Sread_file_name
);
6474 defsubr (&Sunix_sync
);