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. */
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 */
2433 ifd
= emacs_open (SDATA (encoded_file
), O_RDONLY
, 0);
2437 report_file_error ("Opening input file", Fcons (file
, Qnil
));
2439 record_unwind_protect (close_file_unwind
, make_number (ifd
));
2441 /* We can only copy regular files and symbolic links. Other files are not
2443 input_file_statable_p
= (fstat (ifd
, &st
) >= 0);
2445 #if !defined (DOS_NT) || __DJGPP__ > 1
2446 if (out_st
.st_mode
!= 0
2447 && st
.st_dev
== out_st
.st_dev
&& st
.st_ino
== out_st
.st_ino
)
2450 report_file_error ("Input and output files are the same",
2451 Fcons (file
, Fcons (newname
, Qnil
)));
2455 #if defined (S_ISREG) && defined (S_ISLNK)
2456 if (input_file_statable_p
)
2458 if (!(S_ISREG (st
.st_mode
)) && !(S_ISLNK (st
.st_mode
)))
2460 #if defined (EISDIR)
2461 /* Get a better looking error message. */
2464 report_file_error ("Non-regular file", Fcons (file
, Qnil
));
2467 #endif /* S_ISREG && S_ISLNK */
2470 /* Create the copy file with the same record format as the input file */
2471 ofd
= sys_creat (SDATA (encoded_newname
), 0666, ifd
);
2474 /* System's default file type was set to binary by _fmode in emacs.c. */
2475 ofd
= creat (SDATA (encoded_newname
), S_IREAD
| S_IWRITE
);
2476 #else /* not MSDOS */
2477 ofd
= creat (SDATA (encoded_newname
), 0666);
2478 #endif /* not MSDOS */
2481 report_file_error ("Opening output file", Fcons (newname
, Qnil
));
2483 record_unwind_protect (close_file_unwind
, make_number (ofd
));
2487 while ((n
= emacs_read (ifd
, buf
, sizeof buf
)) > 0)
2488 if (emacs_write (ofd
, buf
, n
) != n
)
2489 report_file_error ("I/O error", Fcons (newname
, Qnil
));
2492 /* Closing the output clobbers the file times on some systems. */
2493 if (emacs_close (ofd
) < 0)
2494 report_file_error ("I/O error", Fcons (newname
, Qnil
));
2496 if (input_file_statable_p
)
2498 if (!NILP (keep_time
))
2500 EMACS_TIME atime
, mtime
;
2501 EMACS_SET_SECS_USECS (atime
, st
.st_atime
, 0);
2502 EMACS_SET_SECS_USECS (mtime
, st
.st_mtime
, 0);
2503 if (set_file_times (SDATA (encoded_newname
),
2505 Fsignal (Qfile_date_error
,
2506 Fcons (build_string ("Cannot set file date"),
2507 Fcons (newname
, Qnil
)));
2510 chmod (SDATA (encoded_newname
), st
.st_mode
& 07777);
2512 #if defined (__DJGPP__) && __DJGPP__ > 1
2513 /* In DJGPP v2.0 and later, fstat usually returns true file mode bits,
2514 and if it can't, it tells so. Otherwise, under MSDOS we usually
2515 get only the READ bit, which will make the copied file read-only,
2516 so it's better not to chmod at all. */
2517 if ((_djstat_flags
& _STFAIL_WRITEBIT
) == 0)
2518 chmod (SDATA (encoded_newname
), st
.st_mode
& 07777);
2519 #endif /* DJGPP version 2 or newer */
2524 #endif /* WINDOWSNT */
2526 /* Discard the unwind protects. */
2527 specpdl_ptr
= specpdl
+ count
;
2533 DEFUN ("make-directory-internal", Fmake_directory_internal
,
2534 Smake_directory_internal
, 1, 1, 0,
2535 doc
: /* Create a new directory named DIRECTORY. */)
2537 Lisp_Object directory
;
2539 const unsigned char *dir
;
2540 Lisp_Object handler
;
2541 Lisp_Object encoded_dir
;
2543 CHECK_STRING (directory
);
2544 directory
= Fexpand_file_name (directory
, Qnil
);
2546 handler
= Ffind_file_name_handler (directory
, Qmake_directory_internal
);
2547 if (!NILP (handler
))
2548 return call2 (handler
, Qmake_directory_internal
, directory
);
2550 encoded_dir
= ENCODE_FILE (directory
);
2552 dir
= SDATA (encoded_dir
);
2555 if (mkdir (dir
) != 0)
2557 if (mkdir (dir
, 0777) != 0)
2559 report_file_error ("Creating directory", Flist (1, &directory
));
2564 DEFUN ("delete-directory", Fdelete_directory
, Sdelete_directory
, 1, 1, "FDelete directory: ",
2565 doc
: /* Delete the directory named DIRECTORY. */)
2567 Lisp_Object directory
;
2569 const unsigned char *dir
;
2570 Lisp_Object handler
;
2571 Lisp_Object encoded_dir
;
2573 CHECK_STRING (directory
);
2574 directory
= Fdirectory_file_name (Fexpand_file_name (directory
, Qnil
));
2576 handler
= Ffind_file_name_handler (directory
, Qdelete_directory
);
2577 if (!NILP (handler
))
2578 return call2 (handler
, Qdelete_directory
, directory
);
2580 encoded_dir
= ENCODE_FILE (directory
);
2582 dir
= SDATA (encoded_dir
);
2584 if (rmdir (dir
) != 0)
2585 report_file_error ("Removing directory", Flist (1, &directory
));
2590 DEFUN ("delete-file", Fdelete_file
, Sdelete_file
, 1, 1, "fDelete file: ",
2591 doc
: /* Delete file named FILENAME.
2592 If file has multiple names, it continues to exist with the other names. */)
2594 Lisp_Object filename
;
2596 Lisp_Object handler
;
2597 Lisp_Object encoded_file
;
2599 CHECK_STRING (filename
);
2600 filename
= Fexpand_file_name (filename
, Qnil
);
2602 handler
= Ffind_file_name_handler (filename
, Qdelete_file
);
2603 if (!NILP (handler
))
2604 return call2 (handler
, Qdelete_file
, filename
);
2606 encoded_file
= ENCODE_FILE (filename
);
2608 if (0 > unlink (SDATA (encoded_file
)))
2609 report_file_error ("Removing old name", Flist (1, &filename
));
2614 internal_delete_file_1 (ignore
)
2620 /* Delete file FILENAME, returning 1 if successful and 0 if failed. */
2623 internal_delete_file (filename
)
2624 Lisp_Object filename
;
2626 return NILP (internal_condition_case_1 (Fdelete_file
, filename
,
2627 Qt
, internal_delete_file_1
));
2630 DEFUN ("rename-file", Frename_file
, Srename_file
, 2, 3,
2631 "fRename file: \nFRename %s to file: \np",
2632 doc
: /* Rename FILE as NEWNAME. Both args strings.
2633 If file has names other than FILE, it continues to have those names.
2634 Signals a `file-already-exists' error if a file NEWNAME already exists
2635 unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.
2636 A number as third arg means request confirmation if NEWNAME already exists.
2637 This is what happens in interactive use with M-x. */)
2638 (file
, newname
, ok_if_already_exists
)
2639 Lisp_Object file
, newname
, ok_if_already_exists
;
2642 Lisp_Object args
[2];
2644 Lisp_Object handler
;
2645 struct gcpro gcpro1
, gcpro2
, gcpro3
, gcpro4
;
2646 Lisp_Object encoded_file
, encoded_newname
;
2648 encoded_file
= encoded_newname
= Qnil
;
2649 GCPRO4 (file
, newname
, encoded_file
, encoded_newname
);
2650 CHECK_STRING (file
);
2651 CHECK_STRING (newname
);
2652 file
= Fexpand_file_name (file
, Qnil
);
2653 newname
= Fexpand_file_name (newname
, Qnil
);
2655 /* If the file name has special constructs in it,
2656 call the corresponding file handler. */
2657 handler
= Ffind_file_name_handler (file
, Qrename_file
);
2659 handler
= Ffind_file_name_handler (newname
, Qrename_file
);
2660 if (!NILP (handler
))
2661 RETURN_UNGCPRO (call4 (handler
, Qrename_file
,
2662 file
, newname
, ok_if_already_exists
));
2664 encoded_file
= ENCODE_FILE (file
);
2665 encoded_newname
= ENCODE_FILE (newname
);
2668 /* If the file names are identical but for the case, don't ask for
2669 confirmation: they simply want to change the letter-case of the
2671 if (NILP (Fstring_equal (Fdowncase (file
), Fdowncase (newname
))))
2673 if (NILP (ok_if_already_exists
)
2674 || INTEGERP (ok_if_already_exists
))
2675 barf_or_query_if_file_exists (encoded_newname
, "rename to it",
2676 INTEGERP (ok_if_already_exists
), 0, 0);
2678 if (0 > rename (SDATA (encoded_file
), SDATA (encoded_newname
)))
2680 if (0 > link (SDATA (encoded_file
), SDATA (encoded_newname
))
2681 || 0 > unlink (SDATA (encoded_file
)))
2686 Fcopy_file (file
, newname
,
2687 /* We have already prompted if it was an integer,
2688 so don't have copy-file prompt again. */
2689 NILP (ok_if_already_exists
) ? Qnil
: Qt
, Qt
);
2690 Fdelete_file (file
);
2697 report_file_error ("Renaming", Flist (2, args
));
2700 report_file_error ("Renaming", Flist (2, &file
));
2707 DEFUN ("add-name-to-file", Fadd_name_to_file
, Sadd_name_to_file
, 2, 3,
2708 "fAdd name to file: \nFName to add to %s: \np",
2709 doc
: /* Give FILE additional name NEWNAME. Both args strings.
2710 Signals a `file-already-exists' error if a file NEWNAME already exists
2711 unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.
2712 A number as third arg means request confirmation if NEWNAME already exists.
2713 This is what happens in interactive use with M-x. */)
2714 (file
, newname
, ok_if_already_exists
)
2715 Lisp_Object file
, newname
, ok_if_already_exists
;
2718 Lisp_Object args
[2];
2720 Lisp_Object handler
;
2721 Lisp_Object encoded_file
, encoded_newname
;
2722 struct gcpro gcpro1
, gcpro2
, gcpro3
, gcpro4
;
2724 GCPRO4 (file
, newname
, encoded_file
, encoded_newname
);
2725 encoded_file
= encoded_newname
= Qnil
;
2726 CHECK_STRING (file
);
2727 CHECK_STRING (newname
);
2728 file
= Fexpand_file_name (file
, Qnil
);
2729 newname
= Fexpand_file_name (newname
, Qnil
);
2731 /* If the file name has special constructs in it,
2732 call the corresponding file handler. */
2733 handler
= Ffind_file_name_handler (file
, Qadd_name_to_file
);
2734 if (!NILP (handler
))
2735 RETURN_UNGCPRO (call4 (handler
, Qadd_name_to_file
, file
,
2736 newname
, ok_if_already_exists
));
2738 /* If the new name has special constructs in it,
2739 call the corresponding file handler. */
2740 handler
= Ffind_file_name_handler (newname
, Qadd_name_to_file
);
2741 if (!NILP (handler
))
2742 RETURN_UNGCPRO (call4 (handler
, Qadd_name_to_file
, file
,
2743 newname
, ok_if_already_exists
));
2745 encoded_file
= ENCODE_FILE (file
);
2746 encoded_newname
= ENCODE_FILE (newname
);
2748 if (NILP (ok_if_already_exists
)
2749 || INTEGERP (ok_if_already_exists
))
2750 barf_or_query_if_file_exists (encoded_newname
, "make it a new name",
2751 INTEGERP (ok_if_already_exists
), 0, 0);
2753 unlink (SDATA (newname
));
2754 if (0 > link (SDATA (encoded_file
), SDATA (encoded_newname
)))
2759 report_file_error ("Adding new name", Flist (2, args
));
2761 report_file_error ("Adding new name", Flist (2, &file
));
2770 DEFUN ("make-symbolic-link", Fmake_symbolic_link
, Smake_symbolic_link
, 2, 3,
2771 "FMake symbolic link to file: \nFMake symbolic link to file %s: \np",
2772 doc
: /* Make a symbolic link to FILENAME, named LINKNAME. Both args strings.
2773 Signals a `file-already-exists' error if a file LINKNAME already exists
2774 unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.
2775 A number as third arg means request confirmation if LINKNAME already exists.
2776 This happens for interactive use with M-x. */)
2777 (filename
, linkname
, ok_if_already_exists
)
2778 Lisp_Object filename
, linkname
, ok_if_already_exists
;
2781 Lisp_Object args
[2];
2783 Lisp_Object handler
;
2784 Lisp_Object encoded_filename
, encoded_linkname
;
2785 struct gcpro gcpro1
, gcpro2
, gcpro3
, gcpro4
;
2787 GCPRO4 (filename
, linkname
, encoded_filename
, encoded_linkname
);
2788 encoded_filename
= encoded_linkname
= Qnil
;
2789 CHECK_STRING (filename
);
2790 CHECK_STRING (linkname
);
2791 /* If the link target has a ~, we must expand it to get
2792 a truly valid file name. Otherwise, do not expand;
2793 we want to permit links to relative file names. */
2794 if (SREF (filename
, 0) == '~')
2795 filename
= Fexpand_file_name (filename
, Qnil
);
2796 linkname
= Fexpand_file_name (linkname
, Qnil
);
2798 /* If the file name has special constructs in it,
2799 call the corresponding file handler. */
2800 handler
= Ffind_file_name_handler (filename
, Qmake_symbolic_link
);
2801 if (!NILP (handler
))
2802 RETURN_UNGCPRO (call4 (handler
, Qmake_symbolic_link
, filename
,
2803 linkname
, ok_if_already_exists
));
2805 /* If the new link name has special constructs in it,
2806 call the corresponding file handler. */
2807 handler
= Ffind_file_name_handler (linkname
, Qmake_symbolic_link
);
2808 if (!NILP (handler
))
2809 RETURN_UNGCPRO (call4 (handler
, Qmake_symbolic_link
, filename
,
2810 linkname
, ok_if_already_exists
));
2812 encoded_filename
= ENCODE_FILE (filename
);
2813 encoded_linkname
= ENCODE_FILE (linkname
);
2815 if (NILP (ok_if_already_exists
)
2816 || INTEGERP (ok_if_already_exists
))
2817 barf_or_query_if_file_exists (encoded_linkname
, "make it a link",
2818 INTEGERP (ok_if_already_exists
), 0, 0);
2819 if (0 > symlink (SDATA (encoded_filename
),
2820 SDATA (encoded_linkname
)))
2822 /* If we didn't complain already, silently delete existing file. */
2823 if (errno
== EEXIST
)
2825 unlink (SDATA (encoded_linkname
));
2826 if (0 <= symlink (SDATA (encoded_filename
),
2827 SDATA (encoded_linkname
)))
2837 report_file_error ("Making symbolic link", Flist (2, args
));
2839 report_file_error ("Making symbolic link", Flist (2, &filename
));
2845 #endif /* S_IFLNK */
2849 DEFUN ("define-logical-name", Fdefine_logical_name
, Sdefine_logical_name
,
2850 2, 2, "sDefine logical name: \nsDefine logical name %s as: ",
2851 doc
: /* Define the job-wide logical name NAME to have the value STRING.
2852 If STRING is nil or a null string, the logical name NAME is deleted. */)
2857 CHECK_STRING (name
);
2859 delete_logical_name (SDATA (name
));
2862 CHECK_STRING (string
);
2864 if (SCHARS (string
) == 0)
2865 delete_logical_name (SDATA (name
));
2867 define_logical_name (SDATA (name
), SDATA (string
));
2876 DEFUN ("sysnetunam", Fsysnetunam
, Ssysnetunam
, 2, 2, 0,
2877 doc
: /* Open a network connection to PATH using LOGIN as the login string. */)
2879 Lisp_Object path
, login
;
2883 CHECK_STRING (path
);
2884 CHECK_STRING (login
);
2886 netresult
= netunam (SDATA (path
), SDATA (login
));
2888 if (netresult
== -1)
2893 #endif /* HPUX_NET */
2895 DEFUN ("file-name-absolute-p", Ffile_name_absolute_p
, Sfile_name_absolute_p
,
2897 doc
: /* Return t if file FILENAME specifies an absolute file name.
2898 On Unix, this is a name starting with a `/' or a `~'. */)
2900 Lisp_Object filename
;
2902 const unsigned char *ptr
;
2904 CHECK_STRING (filename
);
2905 ptr
= SDATA (filename
);
2906 if (IS_DIRECTORY_SEP (*ptr
) || *ptr
== '~'
2908 /* ??? This criterion is probably wrong for '<'. */
2909 || index (ptr
, ':') || index (ptr
, '<')
2910 || (*ptr
== '[' && (ptr
[1] != '-' || (ptr
[2] != '.' && ptr
[2] != ']'))
2914 || (IS_DRIVE (*ptr
) && ptr
[1] == ':' && IS_DIRECTORY_SEP (ptr
[2]))
2922 /* Return nonzero if file FILENAME exists and can be executed. */
2925 check_executable (filename
)
2929 int len
= strlen (filename
);
2932 if (stat (filename
, &st
) < 0)
2934 #if defined (WINDOWSNT) || (defined (MSDOS) && __DJGPP__ > 1)
2935 return ((st
.st_mode
& S_IEXEC
) != 0);
2937 return (S_ISREG (st
.st_mode
)
2939 && (stricmp ((suffix
= filename
+ len
-4), ".com") == 0
2940 || stricmp (suffix
, ".exe") == 0
2941 || stricmp (suffix
, ".bat") == 0)
2942 || (st
.st_mode
& S_IFMT
) == S_IFDIR
);
2943 #endif /* not WINDOWSNT */
2944 #else /* not DOS_NT */
2945 #ifdef HAVE_EUIDACCESS
2946 return (euidaccess (filename
, 1) >= 0);
2948 /* Access isn't quite right because it uses the real uid
2949 and we really want to test with the effective uid.
2950 But Unix doesn't give us a right way to do it. */
2951 return (access (filename
, 1) >= 0);
2953 #endif /* not DOS_NT */
2956 /* Return nonzero if file FILENAME exists and can be written. */
2959 check_writable (filename
)
2964 if (stat (filename
, &st
) < 0)
2966 return (st
.st_mode
& S_IWRITE
|| (st
.st_mode
& S_IFMT
) == S_IFDIR
);
2967 #else /* not MSDOS */
2968 #ifdef HAVE_EUIDACCESS
2969 return (euidaccess (filename
, 2) >= 0);
2971 /* Access isn't quite right because it uses the real uid
2972 and we really want to test with the effective uid.
2973 But Unix doesn't give us a right way to do it.
2974 Opening with O_WRONLY could work for an ordinary file,
2975 but would lose for directories. */
2976 return (access (filename
, 2) >= 0);
2978 #endif /* not MSDOS */
2981 DEFUN ("file-exists-p", Ffile_exists_p
, Sfile_exists_p
, 1, 1, 0,
2982 doc
: /* Return t if file FILENAME exists. (This does not mean you can read it.)
2983 See also `file-readable-p' and `file-attributes'. */)
2985 Lisp_Object filename
;
2987 Lisp_Object absname
;
2988 Lisp_Object handler
;
2989 struct stat statbuf
;
2991 CHECK_STRING (filename
);
2992 absname
= Fexpand_file_name (filename
, Qnil
);
2994 /* If the file name has special constructs in it,
2995 call the corresponding file handler. */
2996 handler
= Ffind_file_name_handler (absname
, Qfile_exists_p
);
2997 if (!NILP (handler
))
2998 return call2 (handler
, Qfile_exists_p
, absname
);
3000 absname
= ENCODE_FILE (absname
);
3002 return (stat (SDATA (absname
), &statbuf
) >= 0) ? Qt
: Qnil
;
3005 DEFUN ("file-executable-p", Ffile_executable_p
, Sfile_executable_p
, 1, 1, 0,
3006 doc
: /* Return t if FILENAME can be executed by you.
3007 For a directory, this means you can access files in that directory. */)
3009 Lisp_Object filename
;
3011 Lisp_Object absname
;
3012 Lisp_Object handler
;
3014 CHECK_STRING (filename
);
3015 absname
= Fexpand_file_name (filename
, Qnil
);
3017 /* If the file name has special constructs in it,
3018 call the corresponding file handler. */
3019 handler
= Ffind_file_name_handler (absname
, Qfile_executable_p
);
3020 if (!NILP (handler
))
3021 return call2 (handler
, Qfile_executable_p
, absname
);
3023 absname
= ENCODE_FILE (absname
);
3025 return (check_executable (SDATA (absname
)) ? Qt
: Qnil
);
3028 DEFUN ("file-readable-p", Ffile_readable_p
, Sfile_readable_p
, 1, 1, 0,
3029 doc
: /* Return t if file FILENAME exists and you can read it.
3030 See also `file-exists-p' and `file-attributes'. */)
3032 Lisp_Object filename
;
3034 Lisp_Object absname
;
3035 Lisp_Object handler
;
3038 struct stat statbuf
;
3040 CHECK_STRING (filename
);
3041 absname
= Fexpand_file_name (filename
, Qnil
);
3043 /* If the file name has special constructs in it,
3044 call the corresponding file handler. */
3045 handler
= Ffind_file_name_handler (absname
, Qfile_readable_p
);
3046 if (!NILP (handler
))
3047 return call2 (handler
, Qfile_readable_p
, absname
);
3049 absname
= ENCODE_FILE (absname
);
3051 #if defined(DOS_NT) || defined(macintosh)
3052 /* Under MS-DOS, Windows, and Macintosh, open does not work for
3054 if (access (SDATA (absname
), 0) == 0)
3057 #else /* not DOS_NT and not macintosh */
3059 #if defined (S_ISFIFO) && defined (O_NONBLOCK)
3060 /* Opening a fifo without O_NONBLOCK can wait.
3061 We don't want to wait. But we don't want to mess wth O_NONBLOCK
3062 except in the case of a fifo, on a system which handles it. */
3063 desc
= stat (SDATA (absname
), &statbuf
);
3066 if (S_ISFIFO (statbuf
.st_mode
))
3067 flags
|= O_NONBLOCK
;
3069 desc
= emacs_open (SDATA (absname
), flags
, 0);
3074 #endif /* not DOS_NT and not macintosh */
3077 /* Having this before file-symlink-p mysteriously caused it to be forgotten
3079 DEFUN ("file-writable-p", Ffile_writable_p
, Sfile_writable_p
, 1, 1, 0,
3080 doc
: /* Return t if file FILENAME can be written or created by you. */)
3082 Lisp_Object filename
;
3084 Lisp_Object absname
, dir
, encoded
;
3085 Lisp_Object handler
;
3086 struct stat statbuf
;
3088 CHECK_STRING (filename
);
3089 absname
= Fexpand_file_name (filename
, Qnil
);
3091 /* If the file name has special constructs in it,
3092 call the corresponding file handler. */
3093 handler
= Ffind_file_name_handler (absname
, Qfile_writable_p
);
3094 if (!NILP (handler
))
3095 return call2 (handler
, Qfile_writable_p
, absname
);
3097 encoded
= ENCODE_FILE (absname
);
3098 if (stat (SDATA (encoded
), &statbuf
) >= 0)
3099 return (check_writable (SDATA (encoded
))
3102 dir
= Ffile_name_directory (absname
);
3105 dir
= Fdirectory_file_name (dir
);
3109 dir
= Fdirectory_file_name (dir
);
3112 dir
= ENCODE_FILE (dir
);
3114 /* The read-only attribute of the parent directory doesn't affect
3115 whether a file or directory can be created within it. Some day we
3116 should check ACLs though, which do affect this. */
3117 if (stat (SDATA (dir
), &statbuf
) < 0)
3119 return (statbuf
.st_mode
& S_IFMT
) == S_IFDIR
? Qt
: Qnil
;
3121 return (check_writable (!NILP (dir
) ? (char *) SDATA (dir
) : "")
3126 DEFUN ("access-file", Faccess_file
, Saccess_file
, 2, 2, 0,
3127 doc
: /* Access file FILENAME, and get an error if that does not work.
3128 The second argument STRING is used in the error message.
3129 If there is no error, we return nil. */)
3131 Lisp_Object filename
, string
;
3133 Lisp_Object handler
, encoded_filename
, absname
;
3136 CHECK_STRING (filename
);
3137 absname
= Fexpand_file_name (filename
, Qnil
);
3139 CHECK_STRING (string
);
3141 /* If the file name has special constructs in it,
3142 call the corresponding file handler. */
3143 handler
= Ffind_file_name_handler (absname
, Qaccess_file
);
3144 if (!NILP (handler
))
3145 return call3 (handler
, Qaccess_file
, absname
, string
);
3147 encoded_filename
= ENCODE_FILE (absname
);
3149 fd
= emacs_open (SDATA (encoded_filename
), O_RDONLY
, 0);
3151 report_file_error (SDATA (string
), Fcons (filename
, Qnil
));
3157 DEFUN ("file-symlink-p", Ffile_symlink_p
, Sfile_symlink_p
, 1, 1, 0,
3158 doc
: /* Return non-nil if file FILENAME is the name of a symbolic link.
3159 The value is the name of the file to which it is linked.
3160 Otherwise returns nil. */)
3162 Lisp_Object filename
;
3169 Lisp_Object handler
;
3171 CHECK_STRING (filename
);
3172 filename
= Fexpand_file_name (filename
, Qnil
);
3174 /* If the file name has special constructs in it,
3175 call the corresponding file handler. */
3176 handler
= Ffind_file_name_handler (filename
, Qfile_symlink_p
);
3177 if (!NILP (handler
))
3178 return call2 (handler
, Qfile_symlink_p
, filename
);
3180 filename
= ENCODE_FILE (filename
);
3187 buf
= (char *) xrealloc (buf
, bufsize
);
3188 bzero (buf
, bufsize
);
3191 valsize
= readlink (SDATA (filename
), buf
, bufsize
);
3195 /* HP-UX reports ERANGE if buffer is too small. */
3196 if (errno
== ERANGE
)
3206 while (valsize
>= bufsize
);
3208 val
= make_string (buf
, valsize
);
3209 if (buf
[0] == '/' && index (buf
, ':'))
3210 val
= concat2 (build_string ("/:"), val
);
3212 val
= DECODE_FILE (val
);
3214 #else /* not S_IFLNK */
3216 #endif /* not S_IFLNK */
3219 DEFUN ("file-directory-p", Ffile_directory_p
, Sfile_directory_p
, 1, 1, 0,
3220 doc
: /* Return t if FILENAME names an existing directory.
3221 Symbolic links to directories count as directories.
3222 See `file-symlink-p' to distinguish symlinks. */)
3224 Lisp_Object filename
;
3226 register Lisp_Object absname
;
3228 Lisp_Object handler
;
3230 absname
= expand_and_dir_to_file (filename
, current_buffer
->directory
);
3232 /* If the file name has special constructs in it,
3233 call the corresponding file handler. */
3234 handler
= Ffind_file_name_handler (absname
, Qfile_directory_p
);
3235 if (!NILP (handler
))
3236 return call2 (handler
, Qfile_directory_p
, absname
);
3238 absname
= ENCODE_FILE (absname
);
3240 if (stat (SDATA (absname
), &st
) < 0)
3242 return (st
.st_mode
& S_IFMT
) == S_IFDIR
? Qt
: Qnil
;
3245 DEFUN ("file-accessible-directory-p", Ffile_accessible_directory_p
, Sfile_accessible_directory_p
, 1, 1, 0,
3246 doc
: /* Return t if file FILENAME names a directory you can open.
3247 For the value to be t, FILENAME must specify the name of a directory as a file,
3248 and the directory must allow you to open files in it. In order to use a
3249 directory as a buffer's current directory, this predicate must return true.
3250 A directory name spec may be given instead; then the value is t
3251 if the directory so specified exists and really is a readable and
3252 searchable directory. */)
3254 Lisp_Object filename
;
3256 Lisp_Object handler
;
3258 struct gcpro gcpro1
;
3260 /* If the file name has special constructs in it,
3261 call the corresponding file handler. */
3262 handler
= Ffind_file_name_handler (filename
, Qfile_accessible_directory_p
);
3263 if (!NILP (handler
))
3264 return call2 (handler
, Qfile_accessible_directory_p
, filename
);
3267 tem
= (NILP (Ffile_directory_p (filename
))
3268 || NILP (Ffile_executable_p (filename
)));
3270 return tem
? Qnil
: Qt
;
3273 DEFUN ("file-regular-p", Ffile_regular_p
, Sfile_regular_p
, 1, 1, 0,
3274 doc
: /* Return t if file FILENAME is the name of a regular file.
3275 This is the sort of file that holds an ordinary stream of data bytes. */)
3277 Lisp_Object filename
;
3279 register Lisp_Object absname
;
3281 Lisp_Object handler
;
3283 absname
= expand_and_dir_to_file (filename
, current_buffer
->directory
);
3285 /* If the file name has special constructs in it,
3286 call the corresponding file handler. */
3287 handler
= Ffind_file_name_handler (absname
, Qfile_regular_p
);
3288 if (!NILP (handler
))
3289 return call2 (handler
, Qfile_regular_p
, absname
);
3291 absname
= ENCODE_FILE (absname
);
3296 Lisp_Object tem
= Vw32_get_true_file_attributes
;
3298 /* Tell stat to use expensive method to get accurate info. */
3299 Vw32_get_true_file_attributes
= Qt
;
3300 result
= stat (SDATA (absname
), &st
);
3301 Vw32_get_true_file_attributes
= tem
;
3305 return (st
.st_mode
& S_IFMT
) == S_IFREG
? Qt
: Qnil
;
3308 if (stat (SDATA (absname
), &st
) < 0)
3310 return (st
.st_mode
& S_IFMT
) == S_IFREG
? Qt
: Qnil
;
3314 DEFUN ("file-modes", Ffile_modes
, Sfile_modes
, 1, 1, 0,
3315 doc
: /* Return mode bits of file named FILENAME, as an integer. */)
3317 Lisp_Object filename
;
3319 Lisp_Object absname
;
3321 Lisp_Object handler
;
3323 absname
= expand_and_dir_to_file (filename
, current_buffer
->directory
);
3325 /* If the file name has special constructs in it,
3326 call the corresponding file handler. */
3327 handler
= Ffind_file_name_handler (absname
, Qfile_modes
);
3328 if (!NILP (handler
))
3329 return call2 (handler
, Qfile_modes
, absname
);
3331 absname
= ENCODE_FILE (absname
);
3333 if (stat (SDATA (absname
), &st
) < 0)
3335 #if defined (MSDOS) && __DJGPP__ < 2
3336 if (check_executable (SDATA (absname
)))
3337 st
.st_mode
|= S_IEXEC
;
3338 #endif /* MSDOS && __DJGPP__ < 2 */
3340 return make_number (st
.st_mode
& 07777);
3343 DEFUN ("set-file-modes", Fset_file_modes
, Sset_file_modes
, 2, 2, 0,
3344 doc
: /* Set mode bits of file named FILENAME to MODE (an integer).
3345 Only the 12 low bits of MODE are used. */)
3347 Lisp_Object filename
, mode
;
3349 Lisp_Object absname
, encoded_absname
;
3350 Lisp_Object handler
;
3352 absname
= Fexpand_file_name (filename
, current_buffer
->directory
);
3353 CHECK_NUMBER (mode
);
3355 /* If the file name has special constructs in it,
3356 call the corresponding file handler. */
3357 handler
= Ffind_file_name_handler (absname
, Qset_file_modes
);
3358 if (!NILP (handler
))
3359 return call3 (handler
, Qset_file_modes
, absname
, mode
);
3361 encoded_absname
= ENCODE_FILE (absname
);
3363 if (chmod (SDATA (encoded_absname
), XINT (mode
)) < 0)
3364 report_file_error ("Doing chmod", Fcons (absname
, Qnil
));
3369 DEFUN ("set-default-file-modes", Fset_default_file_modes
, Sset_default_file_modes
, 1, 1, 0,
3370 doc
: /* Set the file permission bits for newly created files.
3371 The argument MODE should be an integer; only the low 9 bits are used.
3372 This setting is inherited by subprocesses. */)
3376 CHECK_NUMBER (mode
);
3378 umask ((~ XINT (mode
)) & 0777);
3383 DEFUN ("default-file-modes", Fdefault_file_modes
, Sdefault_file_modes
, 0, 0, 0,
3384 doc
: /* Return the default file protection for created files.
3385 The value is an integer. */)
3391 realmask
= umask (0);
3394 XSETINT (value
, (~ realmask
) & 0777);
3404 DEFUN ("unix-sync", Funix_sync
, Sunix_sync
, 0, 0, "",
3405 doc
: /* Tell Unix to finish all pending disk updates. */)
3414 DEFUN ("file-newer-than-file-p", Ffile_newer_than_file_p
, Sfile_newer_than_file_p
, 2, 2, 0,
3415 doc
: /* Return t if file FILE1 is newer than file FILE2.
3416 If FILE1 does not exist, the answer is nil;
3417 otherwise, if FILE2 does not exist, the answer is t. */)
3419 Lisp_Object file1
, file2
;
3421 Lisp_Object absname1
, absname2
;
3424 Lisp_Object handler
;
3425 struct gcpro gcpro1
, gcpro2
;
3427 CHECK_STRING (file1
);
3428 CHECK_STRING (file2
);
3431 GCPRO2 (absname1
, file2
);
3432 absname1
= expand_and_dir_to_file (file1
, current_buffer
->directory
);
3433 absname2
= expand_and_dir_to_file (file2
, current_buffer
->directory
);
3436 /* If the file name has special constructs in it,
3437 call the corresponding file handler. */
3438 handler
= Ffind_file_name_handler (absname1
, Qfile_newer_than_file_p
);
3440 handler
= Ffind_file_name_handler (absname2
, Qfile_newer_than_file_p
);
3441 if (!NILP (handler
))
3442 return call3 (handler
, Qfile_newer_than_file_p
, absname1
, absname2
);
3444 GCPRO2 (absname1
, absname2
);
3445 absname1
= ENCODE_FILE (absname1
);
3446 absname2
= ENCODE_FILE (absname2
);
3449 if (stat (SDATA (absname1
), &st
) < 0)
3452 mtime1
= st
.st_mtime
;
3454 if (stat (SDATA (absname2
), &st
) < 0)
3457 return (mtime1
> st
.st_mtime
) ? Qt
: Qnil
;
3461 Lisp_Object Qfind_buffer_file_type
;
3464 #ifndef READ_BUF_SIZE
3465 #define READ_BUF_SIZE (64 << 10)
3468 extern void adjust_markers_for_delete
P_ ((int, int, int, int));
3470 /* This function is called after Lisp functions to decide a coding
3471 system are called, or when they cause an error. Before they are
3472 called, the current buffer is set unibyte and it contains only a
3473 newly inserted text (thus the buffer was empty before the
3476 The functions may set markers, overlays, text properties, or even
3477 alter the buffer contents, change the current buffer.
3479 Here, we reset all those changes by:
3480 o set back the current buffer.
3481 o move all markers and overlays to BEG.
3482 o remove all text properties.
3483 o set back the buffer multibyteness. */
3486 decide_coding_unwind (unwind_data
)
3487 Lisp_Object unwind_data
;
3489 Lisp_Object multibyte
, undo_list
, buffer
;
3491 multibyte
= XCAR (unwind_data
);
3492 unwind_data
= XCDR (unwind_data
);
3493 undo_list
= XCAR (unwind_data
);
3494 buffer
= XCDR (unwind_data
);
3496 if (current_buffer
!= XBUFFER (buffer
))
3497 set_buffer_internal (XBUFFER (buffer
));
3498 adjust_markers_for_delete (BEG
, BEG_BYTE
, Z
, Z_BYTE
);
3499 adjust_overlays_for_delete (BEG
, Z
- BEG
);
3500 BUF_INTERVALS (current_buffer
) = 0;
3501 TEMP_SET_PT_BOTH (BEG
, BEG_BYTE
);
3503 /* Now we are safe to change the buffer's multibyteness directly. */
3504 current_buffer
->enable_multibyte_characters
= multibyte
;
3505 current_buffer
->undo_list
= undo_list
;
3511 /* Used to pass values from insert-file-contents to read_non_regular. */
3513 static int non_regular_fd
;
3514 static int non_regular_inserted
;
3515 static int non_regular_nbytes
;
3518 /* Read from a non-regular file.
3519 Read non_regular_trytry bytes max from non_regular_fd.
3520 Non_regular_inserted specifies where to put the read bytes.
3521 Value is the number of bytes read. */
3530 nbytes
= emacs_read (non_regular_fd
,
3531 BEG_ADDR
+ PT_BYTE
- BEG_BYTE
+ non_regular_inserted
,
3532 non_regular_nbytes
);
3534 return make_number (nbytes
);
3538 /* Condition-case handler used when reading from non-regular files
3539 in insert-file-contents. */
3542 read_non_regular_quit ()
3548 DEFUN ("insert-file-contents", Finsert_file_contents
, Sinsert_file_contents
,
3550 doc
: /* Insert contents of file FILENAME after point.
3551 Returns list of absolute file name and number of bytes inserted.
3552 If second argument VISIT is non-nil, the buffer's visited filename
3553 and last save file modtime are set, and it is marked unmodified.
3554 If visiting and the file does not exist, visiting is completed
3555 before the error is signaled.
3556 The optional third and fourth arguments BEG and END
3557 specify what portion of the file to insert.
3558 These arguments count bytes in the file, not characters in the buffer.
3559 If VISIT is non-nil, BEG and END must be nil.
3561 If optional fifth argument REPLACE is non-nil,
3562 it means replace the current buffer contents (in the accessible portion)
3563 with the file contents. This is better than simply deleting and inserting
3564 the whole thing because (1) it preserves some marker positions
3565 and (2) it puts less data in the undo list.
3566 When REPLACE is non-nil, the value is the number of characters actually read,
3567 which is often less than the number of characters to be read.
3569 This does code conversion according to the value of
3570 `coding-system-for-read' or `file-coding-system-alist',
3571 and sets the variable `last-coding-system-used' to the coding system
3573 (filename
, visit
, beg
, end
, replace
)
3574 Lisp_Object filename
, visit
, beg
, end
, replace
;
3579 register int how_much
;
3580 register int unprocessed
;
3581 int count
= SPECPDL_INDEX ();
3582 struct gcpro gcpro1
, gcpro2
, gcpro3
, gcpro4
;
3583 Lisp_Object handler
, val
, insval
, orig_filename
;
3586 int not_regular
= 0;
3587 unsigned char read_buf
[READ_BUF_SIZE
];
3588 struct coding_system coding
;
3589 unsigned char buffer
[1 << 14];
3590 int replace_handled
= 0;
3591 int set_coding_system
= 0;
3592 int coding_system_decided
= 0;
3595 if (current_buffer
->base_buffer
&& ! NILP (visit
))
3596 error ("Cannot do file visiting in an indirect buffer");
3598 if (!NILP (current_buffer
->read_only
))
3599 Fbarf_if_buffer_read_only ();
3603 orig_filename
= Qnil
;
3605 GCPRO4 (filename
, val
, p
, orig_filename
);
3607 CHECK_STRING (filename
);
3608 filename
= Fexpand_file_name (filename
, Qnil
);
3610 /* If the file name has special constructs in it,
3611 call the corresponding file handler. */
3612 handler
= Ffind_file_name_handler (filename
, Qinsert_file_contents
);
3613 if (!NILP (handler
))
3615 val
= call6 (handler
, Qinsert_file_contents
, filename
,
3616 visit
, beg
, end
, replace
);
3617 if (CONSP (val
) && CONSP (XCDR (val
)))
3618 inserted
= XINT (XCAR (XCDR (val
)));
3622 orig_filename
= filename
;
3623 filename
= ENCODE_FILE (filename
);
3629 Lisp_Object tem
= Vw32_get_true_file_attributes
;
3631 /* Tell stat to use expensive method to get accurate info. */
3632 Vw32_get_true_file_attributes
= Qt
;
3633 total
= stat (SDATA (filename
), &st
);
3634 Vw32_get_true_file_attributes
= tem
;
3639 if (stat (SDATA (filename
), &st
) < 0)
3641 if ((fd
= emacs_open (SDATA (filename
), O_RDONLY
, 0)) < 0
3642 || fstat (fd
, &st
) < 0)
3643 #endif /* not APOLLO */
3644 #endif /* WINDOWSNT */
3646 if (fd
>= 0) emacs_close (fd
);
3649 report_file_error ("Opening input file", Fcons (orig_filename
, Qnil
));
3652 if (!NILP (Vcoding_system_for_read
))
3653 Fset (Qbuffer_file_coding_system
, Vcoding_system_for_read
);
3658 /* This code will need to be changed in order to work on named
3659 pipes, and it's probably just not worth it. So we should at
3660 least signal an error. */
3661 if (!S_ISREG (st
.st_mode
))
3668 if (! NILP (replace
) || ! NILP (beg
) || ! NILP (end
))
3669 Fsignal (Qfile_error
,
3670 Fcons (build_string ("not a regular file"),
3671 Fcons (orig_filename
, Qnil
)));
3676 if ((fd
= emacs_open (SDATA (filename
), O_RDONLY
, 0)) < 0)
3679 /* Replacement should preserve point as it preserves markers. */
3680 if (!NILP (replace
))
3681 record_unwind_protect (restore_point_unwind
, Fpoint_marker ());
3683 record_unwind_protect (close_file_unwind
, make_number (fd
));
3685 /* Supposedly happens on VMS. */
3686 /* Can happen on any platform that uses long as type of off_t, but allows
3687 file sizes to exceed 2Gb. VMS is no longer officially supported, so
3688 give a message suitable for the latter case. */
3689 if (! not_regular
&& st
.st_size
< 0)
3690 error ("Maximum buffer size exceeded");
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
))
4622 val
= Vcoding_system_for_write
;
4623 if (coding_system_require_warning
4624 && !NILP (Ffboundp (Vselect_safe_coding_system_function
)))
4625 /* Confirm that VAL can surely encode the current region. */
4626 val
= call5 (Vselect_safe_coding_system_function
,
4627 start
, end
, Fcons (Qt
, Fcons (val
, Qnil
)),
4632 /* If the variable `buffer-file-coding-system' is set locally,
4633 it means that the file was read with some kind of code
4634 conversion or the variable is explicitly set by users. We
4635 had better write it out with the same coding system even if
4636 `enable-multibyte-characters' is nil.
4638 If it is not set locally, we anyway have to convert EOL
4639 format if the default value of `buffer-file-coding-system'
4640 tells that it is not Unix-like (LF only) format. */
4641 int using_default_coding
= 0;
4642 int force_raw_text
= 0;
4644 val
= current_buffer
->buffer_file_coding_system
;
4646 || NILP (Flocal_variable_p (Qbuffer_file_coding_system
, Qnil
)))
4649 if (NILP (current_buffer
->enable_multibyte_characters
))
4655 /* Check file-coding-system-alist. */
4656 Lisp_Object args
[7], coding_systems
;
4658 args
[0] = Qwrite_region
; args
[1] = start
; args
[2] = end
;
4659 args
[3] = filename
; args
[4] = append
; args
[5] = visit
;
4661 coding_systems
= Ffind_operation_coding_system (7, args
);
4662 if (CONSP (coding_systems
) && !NILP (XCDR (coding_systems
)))
4663 val
= XCDR (coding_systems
);
4667 && !NILP (current_buffer
->buffer_file_coding_system
))
4669 /* If we still have not decided a coding system, use the
4670 default value of buffer-file-coding-system. */
4671 val
= current_buffer
->buffer_file_coding_system
;
4672 using_default_coding
= 1;
4676 && !NILP (Ffboundp (Vselect_safe_coding_system_function
)))
4677 /* Confirm that VAL can surely encode the current region. */
4678 val
= call5 (Vselect_safe_coding_system_function
,
4679 start
, end
, val
, Qnil
, filename
);
4681 setup_coding_system (Fcheck_coding_system (val
), coding
);
4682 if (coding
->eol_type
== CODING_EOL_UNDECIDED
4683 && !using_default_coding
)
4685 if (! EQ (default_buffer_file_coding
.symbol
,
4686 buffer_defaults
.buffer_file_coding_system
))
4687 setup_coding_system (buffer_defaults
.buffer_file_coding_system
,
4688 &default_buffer_file_coding
);
4689 if (default_buffer_file_coding
.eol_type
!= CODING_EOL_UNDECIDED
)
4691 Lisp_Object subsidiaries
;
4693 coding
->eol_type
= default_buffer_file_coding
.eol_type
;
4694 subsidiaries
= Fget (coding
->symbol
, Qeol_type
);
4695 if (VECTORP (subsidiaries
)
4696 && XVECTOR (subsidiaries
)->size
== 3)
4698 = XVECTOR (subsidiaries
)->contents
[coding
->eol_type
];
4703 setup_raw_text_coding_system (coding
);
4704 goto done_setup_coding
;
4707 setup_coding_system (Fcheck_coding_system (val
), coding
);
4710 if (!STRINGP (start
) && !NILP (current_buffer
->selective_display
))
4711 coding
->mode
|= CODING_MODE_SELECTIVE_DISPLAY
;
4714 DEFUN ("write-region", Fwrite_region
, Swrite_region
, 3, 7,
4715 "r\nFWrite region to file: \ni\ni\ni\np",
4716 doc
: /* Write current region into specified file.
4717 When called from a program, requires three arguments:
4718 START, END and FILENAME. START and END are normally buffer positions
4719 specifying the part of the buffer to write.
4720 If START is nil, that means to use the entire buffer contents.
4721 If START is a string, then output that string to the file
4722 instead of any buffer contents; END is ignored.
4724 Optional fourth argument APPEND if non-nil means
4725 append to existing file contents (if any). If it is an integer,
4726 seek to that offset in the file before writing.
4727 Optional fifth argument VISIT if t means
4728 set the last-save-file-modtime of buffer to this file's modtime
4729 and mark buffer not modified.
4730 If VISIT is a string, it is a second file name;
4731 the output goes to FILENAME, but the buffer is marked as visiting VISIT.
4732 VISIT is also the file name to lock and unlock for clash detection.
4733 If VISIT is neither t nor nil nor a string,
4734 that means do not display the \"Wrote file\" message.
4735 The optional sixth arg LOCKNAME, if non-nil, specifies the name to
4736 use for locking and unlocking, overriding FILENAME and VISIT.
4737 The optional seventh arg MUSTBENEW, if non-nil, insists on a check
4738 for an existing file with the same name. If MUSTBENEW is `excl',
4739 that means to get an error if the file already exists; never overwrite.
4740 If MUSTBENEW is neither nil nor `excl', that means ask for
4741 confirmation before overwriting, but do go ahead and overwrite the file
4742 if the user confirms.
4744 This does code conversion according to the value of
4745 `coding-system-for-write', `buffer-file-coding-system', or
4746 `file-coding-system-alist', and sets the variable
4747 `last-coding-system-used' to the coding system actually used. */)
4748 (start
, end
, filename
, append
, visit
, lockname
, mustbenew
)
4749 Lisp_Object start
, end
, filename
, append
, visit
, lockname
, mustbenew
;
4754 const unsigned char *fn
;
4757 int count
= SPECPDL_INDEX ();
4760 unsigned char *fname
= 0; /* If non-0, original filename (must rename) */
4762 Lisp_Object handler
;
4763 Lisp_Object visit_file
;
4764 Lisp_Object annotations
;
4765 Lisp_Object encoded_filename
;
4766 int visiting
= (EQ (visit
, Qt
) || STRINGP (visit
));
4767 int quietly
= !NILP (visit
);
4768 struct gcpro gcpro1
, gcpro2
, gcpro3
, gcpro4
, gcpro5
;
4769 struct buffer
*given_buffer
;
4771 int buffer_file_type
= O_BINARY
;
4773 struct coding_system coding
;
4775 if (current_buffer
->base_buffer
&& visiting
)
4776 error ("Cannot do file visiting in an indirect buffer");
4778 if (!NILP (start
) && !STRINGP (start
))
4779 validate_region (&start
, &end
);
4781 GCPRO5 (start
, filename
, visit
, visit_file
, lockname
);
4783 filename
= Fexpand_file_name (filename
, Qnil
);
4785 if (!NILP (mustbenew
) && !EQ (mustbenew
, Qexcl
))
4786 barf_or_query_if_file_exists (filename
, "overwrite", 1, 0, 1);
4788 if (STRINGP (visit
))
4789 visit_file
= Fexpand_file_name (visit
, Qnil
);
4791 visit_file
= filename
;
4793 if (NILP (lockname
))
4794 lockname
= visit_file
;
4798 /* If the file name has special constructs in it,
4799 call the corresponding file handler. */
4800 handler
= Ffind_file_name_handler (filename
, Qwrite_region
);
4801 /* If FILENAME has no handler, see if VISIT has one. */
4802 if (NILP (handler
) && STRINGP (visit
))
4803 handler
= Ffind_file_name_handler (visit
, Qwrite_region
);
4805 if (!NILP (handler
))
4808 val
= call6 (handler
, Qwrite_region
, start
, end
,
4809 filename
, append
, visit
);
4813 SAVE_MODIFF
= MODIFF
;
4814 XSETFASTINT (current_buffer
->save_length
, Z
- BEG
);
4815 current_buffer
->filename
= visit_file
;
4821 /* Special kludge to simplify auto-saving. */
4824 XSETFASTINT (start
, BEG
);
4825 XSETFASTINT (end
, Z
);
4828 record_unwind_protect (build_annotations_unwind
, Fcurrent_buffer ());
4829 count1
= SPECPDL_INDEX ();
4831 given_buffer
= current_buffer
;
4833 if (!STRINGP (start
))
4835 annotations
= build_annotations (start
, end
);
4837 if (current_buffer
!= given_buffer
)
4839 XSETFASTINT (start
, BEGV
);
4840 XSETFASTINT (end
, ZV
);
4846 GCPRO5 (start
, filename
, annotations
, visit_file
, lockname
);
4848 /* Decide the coding-system to encode the data with.
4849 We used to make this choice before calling build_annotations, but that
4850 leads to problems when a write-annotate-function takes care of
4851 unsavable chars (as was the case with X-Symbol). */
4852 choose_write_coding_system (start
, end
, filename
,
4853 append
, visit
, lockname
, &coding
);
4854 Vlast_coding_system_used
= coding
.symbol
;
4856 given_buffer
= current_buffer
;
4857 if (! STRINGP (start
))
4859 annotations
= build_annotations_2 (start
, end
,
4860 coding
.pre_write_conversion
, annotations
);
4861 if (current_buffer
!= given_buffer
)
4863 XSETFASTINT (start
, BEGV
);
4864 XSETFASTINT (end
, ZV
);
4868 #ifdef CLASH_DETECTION
4871 #if 0 /* This causes trouble for GNUS. */
4872 /* If we've locked this file for some other buffer,
4873 query before proceeding. */
4874 if (!visiting
&& EQ (Ffile_locked_p (lockname
), Qt
))
4875 call2 (intern ("ask-user-about-lock"), filename
, Vuser_login_name
);
4878 lock_file (lockname
);
4880 #endif /* CLASH_DETECTION */
4882 encoded_filename
= ENCODE_FILE (filename
);
4884 fn
= SDATA (encoded_filename
);
4888 desc
= emacs_open (fn
, O_WRONLY
| buffer_file_type
, 0);
4889 #else /* not DOS_NT */
4890 desc
= emacs_open (fn
, O_WRONLY
, 0);
4891 #endif /* not DOS_NT */
4893 if (desc
< 0 && (NILP (append
) || errno
== ENOENT
))
4895 if (auto_saving
) /* Overwrite any previous version of autosave file */
4897 vms_truncate (fn
); /* if fn exists, truncate to zero length */
4898 desc
= emacs_open (fn
, O_RDWR
, 0);
4900 desc
= creat_copy_attrs (STRINGP (current_buffer
->filename
)
4901 ? SDATA (current_buffer
->filename
) : 0,
4904 else /* Write to temporary name and rename if no errors */
4906 Lisp_Object temp_name
;
4907 temp_name
= Ffile_name_directory (filename
);
4909 if (!NILP (temp_name
))
4911 temp_name
= Fmake_temp_name (concat2 (temp_name
,
4912 build_string ("$$SAVE$$")));
4913 fname
= SDATA (filename
);
4914 fn
= SDATA (temp_name
);
4915 desc
= creat_copy_attrs (fname
, fn
);
4918 /* If we can't open the temporary file, try creating a new
4919 version of the original file. VMS "creat" creates a
4920 new version rather than truncating an existing file. */
4923 desc
= creat (fn
, 0666);
4924 #if 0 /* This can clobber an existing file and fail to replace it,
4925 if the user runs out of space. */
4928 /* We can't make a new version;
4929 try to truncate and rewrite existing version if any. */
4931 desc
= emacs_open (fn
, O_RDWR
, 0);
4937 desc
= creat (fn
, 0666);
4941 desc
= emacs_open (fn
,
4942 O_WRONLY
| O_CREAT
| buffer_file_type
4943 | (EQ (mustbenew
, Qexcl
) ? O_EXCL
: O_TRUNC
),
4944 S_IREAD
| S_IWRITE
);
4945 #else /* not DOS_NT */
4946 desc
= emacs_open (fn
, O_WRONLY
| O_TRUNC
| O_CREAT
4947 | (EQ (mustbenew
, Qexcl
) ? O_EXCL
: 0),
4948 auto_saving
? auto_save_mode_bits
: 0666);
4949 #endif /* not DOS_NT */
4950 #endif /* not VMS */
4954 #ifdef CLASH_DETECTION
4956 if (!auto_saving
) unlock_file (lockname
);
4958 #endif /* CLASH_DETECTION */
4960 report_file_error ("Opening output file", Fcons (filename
, Qnil
));
4963 record_unwind_protect (close_file_unwind
, make_number (desc
));
4965 if (!NILP (append
) && !NILP (Ffile_regular_p (filename
)))
4969 if (NUMBERP (append
))
4970 ret
= lseek (desc
, XINT (append
), 1);
4972 ret
= lseek (desc
, 0, 2);
4975 #ifdef CLASH_DETECTION
4976 if (!auto_saving
) unlock_file (lockname
);
4977 #endif /* CLASH_DETECTION */
4979 report_file_error ("Lseek error", Fcons (filename
, Qnil
));
4987 * Kludge Warning: The VMS C RTL likes to insert carriage returns
4988 * if we do writes that don't end with a carriage return. Furthermore
4989 * it cannot handle writes of more then 16K. The modified
4990 * version of "sys_write" in SYSDEP.C (see comment there) copes with
4991 * this EXCEPT for the last record (iff it doesn't end with a carriage
4992 * return). This implies that if your buffer doesn't end with a carriage
4993 * return, you get one free... tough. However it also means that if
4994 * we make two calls to sys_write (a la the following code) you can
4995 * get one at the gap as well. The easiest way to fix this (honest)
4996 * is to move the gap to the next newline (or the end of the buffer).
5001 if (GPT
> BEG
&& GPT_ADDR
[-1] != '\n')
5002 move_gap (find_next_newline (GPT
, 1));
5004 /* Whether VMS or not, we must move the gap to the next of newline
5005 when we must put designation sequences at beginning of line. */
5006 if (INTEGERP (start
)
5007 && coding
.type
== coding_type_iso2022
5008 && coding
.flags
& CODING_FLAG_ISO_DESIGNATE_AT_BOL
5009 && GPT
> BEG
&& GPT_ADDR
[-1] != '\n')
5011 int opoint
= PT
, opoint_byte
= PT_BYTE
;
5012 scan_newline (PT
, PT_BYTE
, ZV
, ZV_BYTE
, 1, 0);
5013 move_gap_both (PT
, PT_BYTE
);
5014 SET_PT_BOTH (opoint
, opoint_byte
);
5021 if (STRINGP (start
))
5023 failure
= 0 > a_write (desc
, start
, 0, SCHARS (start
),
5024 &annotations
, &coding
);
5027 else if (XINT (start
) != XINT (end
))
5029 tem
= CHAR_TO_BYTE (XINT (start
));
5031 if (XINT (start
) < GPT
)
5033 failure
= 0 > a_write (desc
, Qnil
, XINT (start
),
5034 min (GPT
, XINT (end
)) - XINT (start
),
5035 &annotations
, &coding
);
5039 if (XINT (end
) > GPT
&& !failure
)
5041 tem
= max (XINT (start
), GPT
);
5042 failure
= 0 > a_write (desc
, Qnil
, tem
, XINT (end
) - tem
,
5043 &annotations
, &coding
);
5049 /* If file was empty, still need to write the annotations */
5050 coding
.mode
|= CODING_MODE_LAST_BLOCK
;
5051 failure
= 0 > a_write (desc
, Qnil
, XINT (end
), 0, &annotations
, &coding
);
5055 if (CODING_REQUIRE_FLUSHING (&coding
)
5056 && !(coding
.mode
& CODING_MODE_LAST_BLOCK
)
5059 /* We have to flush out a data. */
5060 coding
.mode
|= CODING_MODE_LAST_BLOCK
;
5061 failure
= 0 > e_write (desc
, Qnil
, 0, 0, &coding
);
5068 /* Note fsync appears to change the modtime on BSD4.2 (both vax and sun).
5069 Disk full in NFS may be reported here. */
5070 /* mib says that closing the file will try to write as fast as NFS can do
5071 it, and that means the fsync here is not crucial for autosave files. */
5072 if (!auto_saving
&& fsync (desc
) < 0)
5074 /* If fsync fails with EINTR, don't treat that as serious. */
5076 failure
= 1, save_errno
= errno
;
5080 /* Spurious "file has changed on disk" warnings have been
5081 observed on Suns as well.
5082 It seems that `close' can change the modtime, under nfs.
5084 (This has supposedly been fixed in Sunos 4,
5085 but who knows about all the other machines with NFS?) */
5088 /* On VMS and APOLLO, must do the stat after the close
5089 since closing changes the modtime. */
5092 /* Recall that #if defined does not work on VMS. */
5099 /* NFS can report a write failure now. */
5100 if (emacs_close (desc
) < 0)
5101 failure
= 1, save_errno
= errno
;
5104 /* If we wrote to a temporary name and had no errors, rename to real name. */
5108 failure
= (rename (fn
, fname
) != 0), save_errno
= errno
;
5116 /* Discard the unwind protect for close_file_unwind. */
5117 specpdl_ptr
= specpdl
+ count1
;
5118 /* Restore the original current buffer. */
5119 visit_file
= unbind_to (count
, visit_file
);
5121 #ifdef CLASH_DETECTION
5123 unlock_file (lockname
);
5124 #endif /* CLASH_DETECTION */
5126 /* Do this before reporting IO error
5127 to avoid a "file has changed on disk" warning on
5128 next attempt to save. */
5130 current_buffer
->modtime
= st
.st_mtime
;
5133 error ("IO error writing %s: %s", SDATA (filename
),
5134 emacs_strerror (save_errno
));
5138 SAVE_MODIFF
= MODIFF
;
5139 XSETFASTINT (current_buffer
->save_length
, Z
- BEG
);
5140 current_buffer
->filename
= visit_file
;
5141 update_mode_lines
++;
5147 message_with_string ("Wrote %s", visit_file
, 1);
5152 Lisp_Object
merge ();
5154 DEFUN ("car-less-than-car", Fcar_less_than_car
, Scar_less_than_car
, 2, 2, 0,
5155 doc
: /* Return t if (car A) is numerically less than (car B). */)
5159 return Flss (Fcar (a
), Fcar (b
));
5162 /* Build the complete list of annotations appropriate for writing out
5163 the text between START and END, by calling all the functions in
5164 write-region-annotate-functions and merging the lists they return.
5165 If one of these functions switches to a different buffer, we assume
5166 that buffer contains altered text. Therefore, the caller must
5167 make sure to restore the current buffer in all cases,
5168 as save-excursion would do. */
5171 build_annotations (start
, end
)
5172 Lisp_Object start
, end
;
5174 Lisp_Object annotations
;
5176 struct gcpro gcpro1
, gcpro2
;
5177 Lisp_Object original_buffer
;
5180 XSETBUFFER (original_buffer
, current_buffer
);
5183 p
= Vwrite_region_annotate_functions
;
5184 GCPRO2 (annotations
, p
);
5187 struct buffer
*given_buffer
= current_buffer
;
5188 Vwrite_region_annotations_so_far
= annotations
;
5189 res
= call2 (XCAR (p
), start
, end
);
5190 /* If the function makes a different buffer current,
5191 assume that means this buffer contains altered text to be output.
5192 Reset START and END from the buffer bounds
5193 and discard all previous annotations because they should have
5194 been dealt with by this function. */
5195 if (current_buffer
!= given_buffer
)
5197 XSETFASTINT (start
, BEGV
);
5198 XSETFASTINT (end
, ZV
);
5201 Flength (res
); /* Check basic validity of return value */
5202 annotations
= merge (annotations
, res
, Qcar_less_than_car
);
5206 /* Now do the same for annotation functions implied by the file-format */
5207 if (auto_saving
&& (!EQ (Vauto_save_file_format
, Qt
)))
5208 p
= Vauto_save_file_format
;
5210 p
= current_buffer
->file_format
;
5211 for (i
= 0; CONSP (p
); p
= XCDR (p
), ++i
)
5213 struct buffer
*given_buffer
= current_buffer
;
5215 Vwrite_region_annotations_so_far
= annotations
;
5217 /* Value is either a list of annotations or nil if the function
5218 has written annotations to a temporary buffer, which is now
5220 res
= call5 (Qformat_annotate_function
, XCAR (p
), start
, end
,
5221 original_buffer
, make_number (i
));
5222 if (current_buffer
!= given_buffer
)
5224 XSETFASTINT (start
, BEGV
);
5225 XSETFASTINT (end
, ZV
);
5230 annotations
= merge (annotations
, res
, Qcar_less_than_car
);
5238 build_annotations_2 (start
, end
, pre_write_conversion
, annotations
)
5239 Lisp_Object start
, end
, pre_write_conversion
, annotations
;
5241 struct gcpro gcpro1
;
5244 GCPRO1 (annotations
);
5245 /* At last, do the same for the function PRE_WRITE_CONVERSION
5246 implied by the current coding-system. */
5247 if (!NILP (pre_write_conversion
))
5249 struct buffer
*given_buffer
= current_buffer
;
5250 Vwrite_region_annotations_so_far
= annotations
;
5251 res
= call2 (pre_write_conversion
, start
, end
);
5253 annotations
= (current_buffer
!= given_buffer
5255 : merge (annotations
, res
, Qcar_less_than_car
));
5262 /* Write to descriptor DESC the NCHARS chars starting at POS of STRING.
5263 If STRING is nil, POS is the character position in the current buffer.
5264 Intersperse with them the annotations from *ANNOT
5265 which fall within the range of POS to POS + NCHARS,
5266 each at its appropriate position.
5268 We modify *ANNOT by discarding elements as we use them up.
5270 The return value is negative in case of system call failure. */
5273 a_write (desc
, string
, pos
, nchars
, annot
, coding
)
5276 register int nchars
;
5279 struct coding_system
*coding
;
5283 int lastpos
= pos
+ nchars
;
5285 while (NILP (*annot
) || CONSP (*annot
))
5287 tem
= Fcar_safe (Fcar (*annot
));
5290 nextpos
= XFASTINT (tem
);
5292 /* If there are no more annotations in this range,
5293 output the rest of the range all at once. */
5294 if (! (nextpos
>= pos
&& nextpos
<= lastpos
))
5295 return e_write (desc
, string
, pos
, lastpos
, coding
);
5297 /* Output buffer text up to the next annotation's position. */
5300 if (0 > e_write (desc
, string
, pos
, nextpos
, coding
))
5304 /* Output the annotation. */
5305 tem
= Fcdr (Fcar (*annot
));
5308 if (0 > e_write (desc
, tem
, 0, SCHARS (tem
), coding
))
5311 *annot
= Fcdr (*annot
);
5316 #ifndef WRITE_BUF_SIZE
5317 #define WRITE_BUF_SIZE (16 * 1024)
5320 /* Write text in the range START and END into descriptor DESC,
5321 encoding them with coding system CODING. If STRING is nil, START
5322 and END are character positions of the current buffer, else they
5323 are indexes to the string STRING. */
5326 e_write (desc
, string
, start
, end
, coding
)
5330 struct coding_system
*coding
;
5332 register char *addr
;
5333 register int nbytes
;
5334 char buf
[WRITE_BUF_SIZE
];
5338 coding
->composing
= COMPOSITION_DISABLED
;
5339 if (coding
->composing
!= COMPOSITION_DISABLED
)
5340 coding_save_composition (coding
, start
, end
, string
);
5342 if (STRINGP (string
))
5344 addr
= SDATA (string
);
5345 nbytes
= SBYTES (string
);
5346 coding
->src_multibyte
= STRING_MULTIBYTE (string
);
5348 else if (start
< end
)
5350 /* It is assured that the gap is not in the range START and END-1. */
5351 addr
= CHAR_POS_ADDR (start
);
5352 nbytes
= CHAR_TO_BYTE (end
) - CHAR_TO_BYTE (start
);
5353 coding
->src_multibyte
5354 = !NILP (current_buffer
->enable_multibyte_characters
);
5360 coding
->src_multibyte
= 1;
5363 /* We used to have a code for handling selective display here. But,
5364 now it is handled within encode_coding. */
5369 result
= encode_coding (coding
, addr
, buf
, nbytes
, WRITE_BUF_SIZE
);
5370 if (coding
->produced
> 0)
5372 coding
->produced
-= emacs_write (desc
, buf
, coding
->produced
);
5373 if (coding
->produced
)
5379 nbytes
-= coding
->consumed
;
5380 addr
+= coding
->consumed
;
5381 if (result
== CODING_FINISH_INSUFFICIENT_SRC
5384 /* The source text ends by an incomplete multibyte form.
5385 There's no way other than write it out as is. */
5386 nbytes
-= emacs_write (desc
, addr
, nbytes
);
5395 start
+= coding
->consumed_char
;
5396 if (coding
->cmp_data
)
5397 coding_adjust_composition_offset (coding
, start
);
5400 if (coding
->cmp_data
)
5401 coding_free_composition_data (coding
);
5406 DEFUN ("verify-visited-file-modtime", Fverify_visited_file_modtime
,
5407 Sverify_visited_file_modtime
, 1, 1, 0,
5408 doc
: /* Return t if last mod time of BUF's visited file matches what BUF records.
5409 This means that the file has not been changed since it was visited or saved. */)
5415 Lisp_Object handler
;
5416 Lisp_Object filename
;
5421 if (!STRINGP (b
->filename
)) return Qt
;
5422 if (b
->modtime
== 0) return Qt
;
5424 /* If the file name has special constructs in it,
5425 call the corresponding file handler. */
5426 handler
= Ffind_file_name_handler (b
->filename
,
5427 Qverify_visited_file_modtime
);
5428 if (!NILP (handler
))
5429 return call2 (handler
, Qverify_visited_file_modtime
, buf
);
5431 filename
= ENCODE_FILE (b
->filename
);
5433 if (stat (SDATA (filename
), &st
) < 0)
5435 /* If the file doesn't exist now and didn't exist before,
5436 we say that it isn't modified, provided the error is a tame one. */
5437 if (errno
== ENOENT
|| errno
== EACCES
|| errno
== ENOTDIR
)
5442 if (st
.st_mtime
== b
->modtime
5443 /* If both are positive, accept them if they are off by one second. */
5444 || (st
.st_mtime
> 0 && b
->modtime
> 0
5445 && (st
.st_mtime
== b
->modtime
+ 1
5446 || st
.st_mtime
== b
->modtime
- 1)))
5451 DEFUN ("clear-visited-file-modtime", Fclear_visited_file_modtime
,
5452 Sclear_visited_file_modtime
, 0, 0, 0,
5453 doc
: /* Clear out records of last mod time of visited file.
5454 Next attempt to save will certainly not complain of a discrepancy. */)
5457 current_buffer
->modtime
= 0;
5461 DEFUN ("visited-file-modtime", Fvisited_file_modtime
,
5462 Svisited_file_modtime
, 0, 0, 0,
5463 doc
: /* Return the current buffer's recorded visited file modification time.
5464 The value is a list of the form (HIGH . LOW), like the time values
5465 that `file-attributes' returns. */)
5468 return long_to_cons ((unsigned long) current_buffer
->modtime
);
5471 DEFUN ("set-visited-file-modtime", Fset_visited_file_modtime
,
5472 Sset_visited_file_modtime
, 0, 1, 0,
5473 doc
: /* Update buffer's recorded modification time from the visited file's time.
5474 Useful if the buffer was not read from the file normally
5475 or if the file itself has been changed for some known benign reason.
5476 An argument specifies the modification time value to use
5477 \(instead of that of the visited file), in the form of a list
5478 \(HIGH . LOW) or (HIGH LOW). */)
5480 Lisp_Object time_list
;
5482 if (!NILP (time_list
))
5483 current_buffer
->modtime
= cons_to_long (time_list
);
5486 register Lisp_Object filename
;
5488 Lisp_Object handler
;
5490 filename
= Fexpand_file_name (current_buffer
->filename
, Qnil
);
5492 /* If the file name has special constructs in it,
5493 call the corresponding file handler. */
5494 handler
= Ffind_file_name_handler (filename
, Qset_visited_file_modtime
);
5495 if (!NILP (handler
))
5496 /* The handler can find the file name the same way we did. */
5497 return call2 (handler
, Qset_visited_file_modtime
, Qnil
);
5499 filename
= ENCODE_FILE (filename
);
5501 if (stat (SDATA (filename
), &st
) >= 0)
5502 current_buffer
->modtime
= st
.st_mtime
;
5509 auto_save_error (error
)
5512 Lisp_Object args
[3], msg
;
5514 struct gcpro gcpro1
;
5518 args
[0] = build_string ("Auto-saving %s: %s");
5519 args
[1] = current_buffer
->name
;
5520 args
[2] = Ferror_message_string (error
);
5521 msg
= Fformat (3, args
);
5523 nbytes
= SBYTES (msg
);
5525 for (i
= 0; i
< 3; ++i
)
5528 message2 (SDATA (msg
), nbytes
, STRING_MULTIBYTE (msg
));
5530 message2_nolog (SDATA (msg
), nbytes
, STRING_MULTIBYTE (msg
));
5531 Fsleep_for (make_number (1), Qnil
);
5543 /* Get visited file's mode to become the auto save file's mode. */
5544 if (! NILP (current_buffer
->filename
)
5545 && stat (SDATA (current_buffer
->filename
), &st
) >= 0)
5546 /* But make sure we can overwrite it later! */
5547 auto_save_mode_bits
= st
.st_mode
| 0600;
5549 auto_save_mode_bits
= 0666;
5552 Fwrite_region (Qnil
, Qnil
,
5553 current_buffer
->auto_save_file_name
,
5554 Qnil
, Qlambda
, Qnil
, Qnil
);
5558 do_auto_save_unwind (stream
) /* used as unwind-protect function */
5563 fclose ((FILE *) (XFASTINT (XCAR (stream
)) << 16
5564 | XFASTINT (XCDR (stream
))));
5569 do_auto_save_unwind_1 (value
) /* used as unwind-protect function */
5572 minibuffer_auto_raise
= XINT (value
);
5577 do_auto_save_make_dir (dir
)
5580 return call2 (Qmake_directory
, dir
, Qt
);
5584 do_auto_save_eh (ignore
)
5590 DEFUN ("do-auto-save", Fdo_auto_save
, Sdo_auto_save
, 0, 2, "",
5591 doc
: /* Auto-save all buffers that need it.
5592 This is all buffers that have auto-saving enabled
5593 and are changed since last auto-saved.
5594 Auto-saving writes the buffer into a file
5595 so that your editing is not lost if the system crashes.
5596 This file is not the file you visited; that changes only when you save.
5597 Normally we run the normal hook `auto-save-hook' before saving.
5599 A non-nil NO-MESSAGE argument means do not print any message if successful.
5600 A non-nil CURRENT-ONLY argument means save only current buffer. */)
5601 (no_message
, current_only
)
5602 Lisp_Object no_message
, current_only
;
5604 struct buffer
*old
= current_buffer
, *b
;
5605 Lisp_Object tail
, buf
;
5607 int do_handled_files
;
5610 Lisp_Object lispstream
;
5611 int count
= SPECPDL_INDEX ();
5612 int orig_minibuffer_auto_raise
= minibuffer_auto_raise
;
5613 int old_message_p
= 0;
5614 struct gcpro gcpro1
, gcpro2
;
5616 if (max_specpdl_size
< specpdl_size
+ 40)
5617 max_specpdl_size
= specpdl_size
+ 40;
5622 if (NILP (no_message
))
5624 old_message_p
= push_message ();
5625 record_unwind_protect (pop_message_unwind
, Qnil
);
5628 /* Ordinarily don't quit within this function,
5629 but don't make it impossible to quit (in case we get hung in I/O). */
5633 /* No GCPRO needed, because (when it matters) all Lisp_Object variables
5634 point to non-strings reached from Vbuffer_alist. */
5636 if (!NILP (Vrun_hooks
))
5637 call1 (Vrun_hooks
, intern ("auto-save-hook"));
5639 if (STRINGP (Vauto_save_list_file_name
))
5641 Lisp_Object listfile
;
5643 listfile
= Fexpand_file_name (Vauto_save_list_file_name
, Qnil
);
5645 /* Don't try to create the directory when shutting down Emacs,
5646 because creating the directory might signal an error, and
5647 that would leave Emacs in a strange state. */
5648 if (!NILP (Vrun_hooks
))
5652 GCPRO2 (dir
, listfile
);
5653 dir
= Ffile_name_directory (listfile
);
5654 if (NILP (Ffile_directory_p (dir
)))
5655 internal_condition_case_1 (do_auto_save_make_dir
,
5656 dir
, Fcons (Fcons (Qfile_error
, Qnil
), Qnil
),
5661 stream
= fopen (SDATA (listfile
), "w");
5664 /* Arrange to close that file whether or not we get an error.
5665 Also reset auto_saving to 0. */
5666 lispstream
= Fcons (Qnil
, Qnil
);
5667 XSETCARFASTINT (lispstream
, (EMACS_UINT
)stream
>> 16);
5668 XSETCDRFASTINT (lispstream
, (EMACS_UINT
)stream
& 0xffff);
5679 record_unwind_protect (do_auto_save_unwind
, lispstream
);
5680 record_unwind_protect (do_auto_save_unwind_1
,
5681 make_number (minibuffer_auto_raise
));
5682 minibuffer_auto_raise
= 0;
5685 /* First, save all files which don't have handlers. If Emacs is
5686 crashing, the handlers may tweak what is causing Emacs to crash
5687 in the first place, and it would be a shame if Emacs failed to
5688 autosave perfectly ordinary files because it couldn't handle some
5690 for (do_handled_files
= 0; do_handled_files
< 2; do_handled_files
++)
5691 for (tail
= Vbuffer_alist
; GC_CONSP (tail
); tail
= XCDR (tail
))
5693 buf
= XCDR (XCAR (tail
));
5696 /* Record all the buffers that have auto save mode
5697 in the special file that lists them. For each of these buffers,
5698 Record visited name (if any) and auto save name. */
5699 if (STRINGP (b
->auto_save_file_name
)
5700 && stream
!= NULL
&& do_handled_files
== 0)
5702 if (!NILP (b
->filename
))
5704 fwrite (SDATA (b
->filename
), 1,
5705 SBYTES (b
->filename
), stream
);
5707 putc ('\n', stream
);
5708 fwrite (SDATA (b
->auto_save_file_name
), 1,
5709 SBYTES (b
->auto_save_file_name
), stream
);
5710 putc ('\n', stream
);
5713 if (!NILP (current_only
)
5714 && b
!= current_buffer
)
5717 /* Don't auto-save indirect buffers.
5718 The base buffer takes care of it. */
5722 /* Check for auto save enabled
5723 and file changed since last auto save
5724 and file changed since last real save. */
5725 if (STRINGP (b
->auto_save_file_name
)
5726 && BUF_SAVE_MODIFF (b
) < BUF_MODIFF (b
)
5727 && b
->auto_save_modified
< BUF_MODIFF (b
)
5728 /* -1 means we've turned off autosaving for a while--see below. */
5729 && XINT (b
->save_length
) >= 0
5730 && (do_handled_files
5731 || NILP (Ffind_file_name_handler (b
->auto_save_file_name
,
5734 EMACS_TIME before_time
, after_time
;
5736 EMACS_GET_TIME (before_time
);
5738 /* If we had a failure, don't try again for 20 minutes. */
5739 if (b
->auto_save_failure_time
>= 0
5740 && EMACS_SECS (before_time
) - b
->auto_save_failure_time
< 1200)
5743 if ((XFASTINT (b
->save_length
) * 10
5744 > (BUF_Z (b
) - BUF_BEG (b
)) * 13)
5745 /* A short file is likely to change a large fraction;
5746 spare the user annoying messages. */
5747 && XFASTINT (b
->save_length
) > 5000
5748 /* These messages are frequent and annoying for `*mail*'. */
5749 && !EQ (b
->filename
, Qnil
)
5750 && NILP (no_message
))
5752 /* It has shrunk too much; turn off auto-saving here. */
5753 minibuffer_auto_raise
= orig_minibuffer_auto_raise
;
5754 message_with_string ("Buffer %s has shrunk a lot; auto save disabled in that buffer until next real save",
5756 minibuffer_auto_raise
= 0;
5757 /* Turn off auto-saving until there's a real save,
5758 and prevent any more warnings. */
5759 XSETINT (b
->save_length
, -1);
5760 Fsleep_for (make_number (1), Qnil
);
5763 set_buffer_internal (b
);
5764 if (!auto_saved
&& NILP (no_message
))
5765 message1 ("Auto-saving...");
5766 internal_condition_case (auto_save_1
, Qt
, auto_save_error
);
5768 b
->auto_save_modified
= BUF_MODIFF (b
);
5769 XSETFASTINT (current_buffer
->save_length
, Z
- BEG
);
5770 set_buffer_internal (old
);
5772 EMACS_GET_TIME (after_time
);
5774 /* If auto-save took more than 60 seconds,
5775 assume it was an NFS failure that got a timeout. */
5776 if (EMACS_SECS (after_time
) - EMACS_SECS (before_time
) > 60)
5777 b
->auto_save_failure_time
= EMACS_SECS (after_time
);
5781 /* Prevent another auto save till enough input events come in. */
5782 record_auto_save ();
5784 if (auto_saved
&& NILP (no_message
))
5788 /* If we are going to restore an old message,
5789 give time to read ours. */
5790 sit_for (1, 0, 0, 0, 0);
5794 /* If we displayed a message and then restored a state
5795 with no message, leave a "done" message on the screen. */
5796 message1 ("Auto-saving...done");
5801 /* This restores the message-stack status. */
5802 unbind_to (count
, Qnil
);
5806 DEFUN ("set-buffer-auto-saved", Fset_buffer_auto_saved
,
5807 Sset_buffer_auto_saved
, 0, 0, 0,
5808 doc
: /* Mark current buffer as auto-saved with its current text.
5809 No auto-save file will be written until the buffer changes again. */)
5812 current_buffer
->auto_save_modified
= MODIFF
;
5813 XSETFASTINT (current_buffer
->save_length
, Z
- BEG
);
5814 current_buffer
->auto_save_failure_time
= -1;
5818 DEFUN ("clear-buffer-auto-save-failure", Fclear_buffer_auto_save_failure
,
5819 Sclear_buffer_auto_save_failure
, 0, 0, 0,
5820 doc
: /* Clear any record of a recent auto-save failure in the current buffer. */)
5823 current_buffer
->auto_save_failure_time
= -1;
5827 DEFUN ("recent-auto-save-p", Frecent_auto_save_p
, Srecent_auto_save_p
,
5829 doc
: /* Return t if buffer has been auto-saved since last read in or saved. */)
5832 return (SAVE_MODIFF
< current_buffer
->auto_save_modified
) ? Qt
: Qnil
;
5835 /* Reading and completing file names */
5836 extern Lisp_Object
Ffile_name_completion (), Ffile_name_all_completions ();
5838 /* In the string VAL, change each $ to $$ and return the result. */
5841 double_dollars (val
)
5844 register const unsigned char *old
;
5845 register unsigned char *new;
5849 osize
= SBYTES (val
);
5851 /* Count the number of $ characters. */
5852 for (n
= osize
, count
= 0, old
= SDATA (val
); n
> 0; n
--)
5853 if (*old
++ == '$') count
++;
5857 val
= make_uninit_multibyte_string (SCHARS (val
) + count
,
5860 for (n
= osize
; n
> 0; n
--)
5874 read_file_name_cleanup (arg
)
5877 return (current_buffer
->directory
= arg
);
5880 DEFUN ("read-file-name-internal", Fread_file_name_internal
, Sread_file_name_internal
,
5882 doc
: /* Internal subroutine for read-file-name. Do not call this. */)
5883 (string
, dir
, action
)
5884 Lisp_Object string
, dir
, action
;
5885 /* action is nil for complete, t for return list of completions,
5886 lambda for verify final value */
5888 Lisp_Object name
, specdir
, realdir
, val
, orig_string
;
5890 struct gcpro gcpro1
, gcpro2
, gcpro3
, gcpro4
, gcpro5
;
5892 CHECK_STRING (string
);
5899 /* No need to protect ACTION--we only compare it with t and nil. */
5900 GCPRO5 (string
, realdir
, name
, specdir
, orig_string
);
5902 if (SCHARS (string
) == 0)
5904 if (EQ (action
, Qlambda
))
5912 orig_string
= string
;
5913 string
= Fsubstitute_in_file_name (string
);
5914 changed
= NILP (Fstring_equal (string
, orig_string
));
5915 name
= Ffile_name_nondirectory (string
);
5916 val
= Ffile_name_directory (string
);
5918 realdir
= Fexpand_file_name (val
, realdir
);
5923 specdir
= Ffile_name_directory (string
);
5924 val
= Ffile_name_completion (name
, realdir
);
5929 return double_dollars (string
);
5933 if (!NILP (specdir
))
5934 val
= concat2 (specdir
, val
);
5936 return double_dollars (val
);
5939 #endif /* not VMS */
5943 if (EQ (action
, Qt
))
5945 Lisp_Object all
= Ffile_name_all_completions (name
, realdir
);
5949 if (NILP (Vread_file_name_predicate
)
5950 || EQ (Vread_file_name_predicate
, Qfile_exists_p
))
5954 if (EQ (Vread_file_name_predicate
, Qfile_directory_p
))
5956 /* Brute-force speed up for directory checking:
5957 Discard strings which don't end in a slash. */
5958 for (comp
= Qnil
; CONSP (all
); all
= XCDR (all
))
5960 Lisp_Object tem
= XCAR (all
);
5962 if (STRINGP (tem
) &&
5963 (len
= SCHARS (tem
), len
> 0) &&
5964 IS_DIRECTORY_SEP (SREF (tem
, len
-1)))
5965 comp
= Fcons (tem
, comp
);
5971 /* Must do it the hard (and slow) way. */
5972 GCPRO3 (all
, comp
, specdir
);
5973 count
= SPECPDL_INDEX ();
5974 record_unwind_protect (read_file_name_cleanup
, current_buffer
->directory
);
5975 current_buffer
->directory
= realdir
;
5976 for (comp
= Qnil
; CONSP (all
); all
= XCDR (all
))
5977 if (!NILP (call1 (Vread_file_name_predicate
, XCAR (all
))))
5978 comp
= Fcons (XCAR (all
), comp
);
5979 unbind_to (count
, Qnil
);
5982 return Fnreverse (comp
);
5985 /* Only other case actually used is ACTION = lambda */
5987 /* Supposedly this helps commands such as `cd' that read directory names,
5988 but can someone explain how it helps them? -- RMS */
5989 if (SCHARS (name
) == 0)
5992 if (!NILP (Vread_file_name_predicate
))
5993 return call1 (Vread_file_name_predicate
, string
);
5994 return Ffile_exists_p (string
);
5997 DEFUN ("read-file-name", Fread_file_name
, Sread_file_name
, 1, 6, 0,
5998 doc
: /* Read file name, prompting with PROMPT and completing in directory DIR.
5999 Value is not expanded---you must call `expand-file-name' yourself.
6000 Default name to DEFAULT-FILENAME if user enters a null string.
6001 (If DEFAULT-FILENAME is omitted, the visited file name is used,
6002 except that if INITIAL is specified, that combined with DIR is used.)
6003 Fourth arg MUSTMATCH non-nil means require existing file's name.
6004 Non-nil and non-t means also require confirmation after completion.
6005 Fifth arg INITIAL specifies text to start with.
6006 If optional sixth arg PREDICATE is non-nil, possible completions and the
6007 resulting file name must satisfy (funcall PREDICATE NAME).
6008 DIR defaults to current buffer's directory default.
6010 If this command was invoked with the mouse, use a file dialog box if
6011 `use-dialog-box' is non-nil, and the window system or X toolkit in use
6012 provides a file dialog box. */)
6013 (prompt
, dir
, default_filename
, mustmatch
, initial
, predicate
)
6014 Lisp_Object prompt
, dir
, default_filename
, mustmatch
, initial
, predicate
;
6016 Lisp_Object val
, insdef
, tem
;
6017 struct gcpro gcpro1
, gcpro2
;
6018 register char *homedir
;
6019 int replace_in_history
= 0;
6020 int add_to_history
= 0;
6024 dir
= current_buffer
->directory
;
6025 if (NILP (default_filename
))
6026 default_filename
= !NILP (initial
)
6027 ? Fexpand_file_name (initial
, dir
)
6028 : current_buffer
->filename
;
6030 /* If dir starts with user's homedir, change that to ~. */
6031 homedir
= (char *) egetenv ("HOME");
6033 /* homedir can be NULL in temacs, since Vprocess_environment is not
6034 yet set up. We shouldn't crash in that case. */
6037 homedir
= strcpy (alloca (strlen (homedir
) + 1), homedir
);
6038 CORRECT_DIR_SEPS (homedir
);
6043 && !strncmp (homedir
, SDATA (dir
), strlen (homedir
))
6044 && IS_DIRECTORY_SEP (SREF (dir
, strlen (homedir
))))
6046 dir
= make_string (SDATA (dir
) + strlen (homedir
) - 1,
6047 SBYTES (dir
) - strlen (homedir
) + 1);
6050 /* Likewise for default_filename. */
6052 && STRINGP (default_filename
)
6053 && !strncmp (homedir
, SDATA (default_filename
), strlen (homedir
))
6054 && IS_DIRECTORY_SEP (SREF (default_filename
, strlen (homedir
))))
6057 = make_string (SDATA (default_filename
) + strlen (homedir
) - 1,
6058 SBYTES (default_filename
) - strlen (homedir
) + 1);
6059 SSET (default_filename
, 0, '~');
6061 if (!NILP (default_filename
))
6063 CHECK_STRING (default_filename
);
6064 default_filename
= double_dollars (default_filename
);
6067 if (insert_default_directory
&& STRINGP (dir
))
6070 if (!NILP (initial
))
6072 Lisp_Object args
[2], pos
;
6076 insdef
= Fconcat (2, args
);
6077 pos
= make_number (SCHARS (double_dollars (dir
)));
6078 insdef
= Fcons (double_dollars (insdef
), pos
);
6081 insdef
= double_dollars (insdef
);
6083 else if (STRINGP (initial
))
6084 insdef
= Fcons (double_dollars (initial
), make_number (0));
6088 if (!NILP (Vread_file_name_function
))
6090 Lisp_Object args
[7];
6092 GCPRO2 (insdef
, default_filename
);
6093 args
[0] = Vread_file_name_function
;
6096 args
[3] = default_filename
;
6097 args
[4] = mustmatch
;
6099 args
[6] = predicate
;
6100 RETURN_UNGCPRO (Ffuncall (7, args
));
6103 count
= SPECPDL_INDEX ();
6105 specbind (intern ("completion-ignore-case"), Qt
);
6108 specbind (intern ("minibuffer-completing-file-name"), Qt
);
6109 specbind (intern ("read-file-name-predicate"),
6110 (NILP (predicate
) ? Qfile_exists_p
: predicate
));
6112 GCPRO2 (insdef
, default_filename
);
6114 #if defined (USE_MOTIF) || defined (HAVE_NTGUI)
6115 if ((NILP (last_nonmenu_event
) || CONSP (last_nonmenu_event
))
6119 /* If DIR contains a file name, split it. */
6121 file
= Ffile_name_nondirectory (dir
);
6122 if (SCHARS (file
) && NILP (default_filename
))
6124 default_filename
= file
;
6125 dir
= Ffile_name_directory (dir
);
6127 if (!NILP(default_filename
))
6128 default_filename
= Fexpand_file_name (default_filename
, dir
);
6129 val
= Fx_file_dialog (prompt
, dir
, default_filename
, mustmatch
);
6134 val
= Fcompleting_read (prompt
, intern ("read-file-name-internal"),
6135 dir
, mustmatch
, insdef
,
6136 Qfile_name_history
, default_filename
, Qnil
);
6138 tem
= Fsymbol_value (Qfile_name_history
);
6139 if (CONSP (tem
) && EQ (XCAR (tem
), val
))
6140 replace_in_history
= 1;
6142 /* If Fcompleting_read returned the inserted default string itself
6143 (rather than a new string with the same contents),
6144 it has to mean that the user typed RET with the minibuffer empty.
6145 In that case, we really want to return ""
6146 so that commands such as set-visited-file-name can distinguish. */
6147 if (EQ (val
, default_filename
))
6149 /* In this case, Fcompleting_read has not added an element
6150 to the history. Maybe we should. */
6151 if (! replace_in_history
)
6157 unbind_to (count
, Qnil
);
6160 error ("No file name specified");
6162 tem
= Fstring_equal (val
, CONSP (insdef
) ? XCAR (insdef
) : insdef
);
6164 if (!NILP (tem
) && !NILP (default_filename
))
6165 val
= default_filename
;
6166 else if (SCHARS (val
) == 0 && NILP (insdef
))
6168 if (!NILP (default_filename
))
6169 val
= default_filename
;
6171 error ("No default file name");
6173 val
= Fsubstitute_in_file_name (val
);
6175 if (replace_in_history
)
6176 /* Replace what Fcompleting_read added to the history
6177 with what we will actually return. */
6178 XSETCAR (Fsymbol_value (Qfile_name_history
), double_dollars (val
));
6179 else if (add_to_history
)
6181 /* Add the value to the history--but not if it matches
6182 the last value already there. */
6183 Lisp_Object val1
= double_dollars (val
);
6184 tem
= Fsymbol_value (Qfile_name_history
);
6185 if (! CONSP (tem
) || NILP (Fequal (XCAR (tem
), val1
)))
6186 Fset (Qfile_name_history
,
6197 /* Must be set before any path manipulation is performed. */
6198 XSETFASTINT (Vdirectory_sep_char
, '/');
6205 Qexpand_file_name
= intern ("expand-file-name");
6206 Qsubstitute_in_file_name
= intern ("substitute-in-file-name");
6207 Qdirectory_file_name
= intern ("directory-file-name");
6208 Qfile_name_directory
= intern ("file-name-directory");
6209 Qfile_name_nondirectory
= intern ("file-name-nondirectory");
6210 Qunhandled_file_name_directory
= intern ("unhandled-file-name-directory");
6211 Qfile_name_as_directory
= intern ("file-name-as-directory");
6212 Qcopy_file
= intern ("copy-file");
6213 Qmake_directory_internal
= intern ("make-directory-internal");
6214 Qmake_directory
= intern ("make-directory");
6215 Qdelete_directory
= intern ("delete-directory");
6216 Qdelete_file
= intern ("delete-file");
6217 Qrename_file
= intern ("rename-file");
6218 Qadd_name_to_file
= intern ("add-name-to-file");
6219 Qmake_symbolic_link
= intern ("make-symbolic-link");
6220 Qfile_exists_p
= intern ("file-exists-p");
6221 Qfile_executable_p
= intern ("file-executable-p");
6222 Qfile_readable_p
= intern ("file-readable-p");
6223 Qfile_writable_p
= intern ("file-writable-p");
6224 Qfile_symlink_p
= intern ("file-symlink-p");
6225 Qaccess_file
= intern ("access-file");
6226 Qfile_directory_p
= intern ("file-directory-p");
6227 Qfile_regular_p
= intern ("file-regular-p");
6228 Qfile_accessible_directory_p
= intern ("file-accessible-directory-p");
6229 Qfile_modes
= intern ("file-modes");
6230 Qset_file_modes
= intern ("set-file-modes");
6231 Qfile_newer_than_file_p
= intern ("file-newer-than-file-p");
6232 Qinsert_file_contents
= intern ("insert-file-contents");
6233 Qwrite_region
= intern ("write-region");
6234 Qverify_visited_file_modtime
= intern ("verify-visited-file-modtime");
6235 Qset_visited_file_modtime
= intern ("set-visited-file-modtime");
6237 staticpro (&Qexpand_file_name
);
6238 staticpro (&Qsubstitute_in_file_name
);
6239 staticpro (&Qdirectory_file_name
);
6240 staticpro (&Qfile_name_directory
);
6241 staticpro (&Qfile_name_nondirectory
);
6242 staticpro (&Qunhandled_file_name_directory
);
6243 staticpro (&Qfile_name_as_directory
);
6244 staticpro (&Qcopy_file
);
6245 staticpro (&Qmake_directory_internal
);
6246 staticpro (&Qmake_directory
);
6247 staticpro (&Qdelete_directory
);
6248 staticpro (&Qdelete_file
);
6249 staticpro (&Qrename_file
);
6250 staticpro (&Qadd_name_to_file
);
6251 staticpro (&Qmake_symbolic_link
);
6252 staticpro (&Qfile_exists_p
);
6253 staticpro (&Qfile_executable_p
);
6254 staticpro (&Qfile_readable_p
);
6255 staticpro (&Qfile_writable_p
);
6256 staticpro (&Qaccess_file
);
6257 staticpro (&Qfile_symlink_p
);
6258 staticpro (&Qfile_directory_p
);
6259 staticpro (&Qfile_regular_p
);
6260 staticpro (&Qfile_accessible_directory_p
);
6261 staticpro (&Qfile_modes
);
6262 staticpro (&Qset_file_modes
);
6263 staticpro (&Qfile_newer_than_file_p
);
6264 staticpro (&Qinsert_file_contents
);
6265 staticpro (&Qwrite_region
);
6266 staticpro (&Qverify_visited_file_modtime
);
6267 staticpro (&Qset_visited_file_modtime
);
6269 Qfile_name_history
= intern ("file-name-history");
6270 Fset (Qfile_name_history
, Qnil
);
6271 staticpro (&Qfile_name_history
);
6273 Qfile_error
= intern ("file-error");
6274 staticpro (&Qfile_error
);
6275 Qfile_already_exists
= intern ("file-already-exists");
6276 staticpro (&Qfile_already_exists
);
6277 Qfile_date_error
= intern ("file-date-error");
6278 staticpro (&Qfile_date_error
);
6279 Qexcl
= intern ("excl");
6283 Qfind_buffer_file_type
= intern ("find-buffer-file-type");
6284 staticpro (&Qfind_buffer_file_type
);
6287 DEFVAR_LISP ("file-name-coding-system", &Vfile_name_coding_system
,
6288 doc
: /* *Coding system for encoding file names.
6289 If it is nil, `default-file-name-coding-system' (which see) is used. */);
6290 Vfile_name_coding_system
= Qnil
;
6292 DEFVAR_LISP ("default-file-name-coding-system",
6293 &Vdefault_file_name_coding_system
,
6294 doc
: /* Default coding system for encoding file names.
6295 This variable is used only when `file-name-coding-system' is nil.
6297 This variable is set/changed by the command `set-language-environment'.
6298 User should not set this variable manually,
6299 instead use `file-name-coding-system' to get a constant encoding
6300 of file names regardless of the current language environment. */);
6301 Vdefault_file_name_coding_system
= Qnil
;
6303 DEFVAR_LISP ("auto-save-file-format", &Vauto_save_file_format
,
6304 doc
: /* *Format in which to write auto-save files.
6305 Should be a list of symbols naming formats that are defined in `format-alist'.
6306 If it is t, which is the default, auto-save files are written in the
6307 same format as a regular save would use. */);
6308 Vauto_save_file_format
= Qt
;
6310 Qformat_decode
= intern ("format-decode");
6311 staticpro (&Qformat_decode
);
6312 Qformat_annotate_function
= intern ("format-annotate-function");
6313 staticpro (&Qformat_annotate_function
);
6315 Qcar_less_than_car
= intern ("car-less-than-car");
6316 staticpro (&Qcar_less_than_car
);
6318 Fput (Qfile_error
, Qerror_conditions
,
6319 Fcons (Qfile_error
, Fcons (Qerror
, Qnil
)));
6320 Fput (Qfile_error
, Qerror_message
,
6321 build_string ("File error"));
6323 Fput (Qfile_already_exists
, Qerror_conditions
,
6324 Fcons (Qfile_already_exists
,
6325 Fcons (Qfile_error
, Fcons (Qerror
, Qnil
))));
6326 Fput (Qfile_already_exists
, Qerror_message
,
6327 build_string ("File already exists"));
6329 Fput (Qfile_date_error
, Qerror_conditions
,
6330 Fcons (Qfile_date_error
,
6331 Fcons (Qfile_error
, Fcons (Qerror
, Qnil
))));
6332 Fput (Qfile_date_error
, Qerror_message
,
6333 build_string ("Cannot set file date"));
6335 DEFVAR_LISP ("read-file-name-function", &Vread_file_name_function
,
6336 doc
: /* If this is non-nil, `read-file-name' does its work by calling this function. */);
6337 Vread_file_name_function
= Qnil
;
6339 DEFVAR_LISP ("read-file-name-predicate", &Vread_file_name_predicate
,
6340 doc
: /* Current predicate used by `read-file-name-internal'. */);
6341 Vread_file_name_predicate
= Qnil
;
6343 DEFVAR_BOOL ("insert-default-directory", &insert_default_directory
,
6344 doc
: /* *Non-nil means when reading a filename start with default dir in minibuffer. */);
6345 insert_default_directory
= 1;
6347 DEFVAR_BOOL ("vms-stmlf-recfm", &vms_stmlf_recfm
,
6348 doc
: /* *Non-nil means write new files with record format `stmlf'.
6349 nil means use format `var'. This variable is meaningful only on VMS. */);
6350 vms_stmlf_recfm
= 0;
6352 DEFVAR_LISP ("directory-sep-char", &Vdirectory_sep_char
,
6353 doc
: /* Directory separator character for built-in functions that return file names.
6354 The value is always ?/. Don't use this variable, just use `/'. */);
6356 DEFVAR_LISP ("file-name-handler-alist", &Vfile_name_handler_alist
,
6357 doc
: /* *Alist of elements (REGEXP . HANDLER) for file names handled specially.
6358 If a file name matches REGEXP, then all I/O on that file is done by calling
6361 The first argument given to HANDLER is the name of the I/O primitive
6362 to be handled; the remaining arguments are the arguments that were
6363 passed to that primitive. For example, if you do
6364 (file-exists-p FILENAME)
6365 and FILENAME is handled by HANDLER, then HANDLER is called like this:
6366 (funcall HANDLER 'file-exists-p FILENAME)
6367 The function `find-file-name-handler' checks this list for a handler
6368 for its argument. */);
6369 Vfile_name_handler_alist
= Qnil
;
6371 DEFVAR_LISP ("set-auto-coding-function",
6372 &Vset_auto_coding_function
,
6373 doc
: /* If non-nil, a function to call to decide a coding system of file.
6374 Two arguments are passed to this function: the file name
6375 and the length of a file contents following the point.
6376 This function should return a coding system to decode the file contents.
6377 It should check the file name against `auto-coding-alist'.
6378 If no coding system is decided, it should check a coding system
6379 specified in the heading lines with the format:
6380 -*- ... coding: CODING-SYSTEM; ... -*-
6381 or local variable spec of the tailing lines with `coding:' tag. */);
6382 Vset_auto_coding_function
= Qnil
;
6384 DEFVAR_LISP ("after-insert-file-functions", &Vafter_insert_file_functions
,
6385 doc
: /* A list of functions to be called at the end of `insert-file-contents'.
6386 Each is passed one argument, the number of bytes inserted. It should return
6387 the new byte count, and leave point the same. If `insert-file-contents' is
6388 intercepted by a handler from `file-name-handler-alist', that handler is
6389 responsible for calling the after-insert-file-functions if appropriate. */);
6390 Vafter_insert_file_functions
= Qnil
;
6392 DEFVAR_LISP ("write-region-annotate-functions", &Vwrite_region_annotate_functions
,
6393 doc
: /* A list of functions to be called at the start of `write-region'.
6394 Each is passed two arguments, START and END as for `write-region'.
6395 These are usually two numbers but not always; see the documentation
6396 for `write-region'. The function should return a list of pairs
6397 of the form (POSITION . STRING), consisting of strings to be effectively
6398 inserted at the specified positions of the file being written (1 means to
6399 insert before the first byte written). The POSITIONs must be sorted into
6400 increasing order. If there are several functions in the list, the several
6401 lists are merged destructively. Alternatively, the function can return
6402 with a different buffer current and value nil.*/);
6403 Vwrite_region_annotate_functions
= Qnil
;
6405 DEFVAR_LISP ("write-region-annotations-so-far",
6406 &Vwrite_region_annotations_so_far
,
6407 doc
: /* When an annotation function is called, this holds the previous annotations.
6408 These are the annotations made by other annotation functions
6409 that were already called. See also `write-region-annotate-functions'. */);
6410 Vwrite_region_annotations_so_far
= Qnil
;
6412 DEFVAR_LISP ("inhibit-file-name-handlers", &Vinhibit_file_name_handlers
,
6413 doc
: /* A list of file name handlers that temporarily should not be used.
6414 This applies only to the operation `inhibit-file-name-operation'. */);
6415 Vinhibit_file_name_handlers
= Qnil
;
6417 DEFVAR_LISP ("inhibit-file-name-operation", &Vinhibit_file_name_operation
,
6418 doc
: /* The operation for which `inhibit-file-name-handlers' is applicable. */);
6419 Vinhibit_file_name_operation
= Qnil
;
6421 DEFVAR_LISP ("auto-save-list-file-name", &Vauto_save_list_file_name
,
6422 doc
: /* File name in which we write a list of all auto save file names.
6423 This variable is initialized automatically from `auto-save-list-file-prefix'
6424 shortly after Emacs reads your `.emacs' file, if you have not yet given it
6425 a non-nil value. */);
6426 Vauto_save_list_file_name
= Qnil
;
6428 defsubr (&Sfind_file_name_handler
);
6429 defsubr (&Sfile_name_directory
);
6430 defsubr (&Sfile_name_nondirectory
);
6431 defsubr (&Sunhandled_file_name_directory
);
6432 defsubr (&Sfile_name_as_directory
);
6433 defsubr (&Sdirectory_file_name
);
6434 defsubr (&Smake_temp_name
);
6435 defsubr (&Sexpand_file_name
);
6436 defsubr (&Ssubstitute_in_file_name
);
6437 defsubr (&Scopy_file
);
6438 defsubr (&Smake_directory_internal
);
6439 defsubr (&Sdelete_directory
);
6440 defsubr (&Sdelete_file
);
6441 defsubr (&Srename_file
);
6442 defsubr (&Sadd_name_to_file
);
6444 defsubr (&Smake_symbolic_link
);
6445 #endif /* S_IFLNK */
6447 defsubr (&Sdefine_logical_name
);
6450 defsubr (&Ssysnetunam
);
6451 #endif /* HPUX_NET */
6452 defsubr (&Sfile_name_absolute_p
);
6453 defsubr (&Sfile_exists_p
);
6454 defsubr (&Sfile_executable_p
);
6455 defsubr (&Sfile_readable_p
);
6456 defsubr (&Sfile_writable_p
);
6457 defsubr (&Saccess_file
);
6458 defsubr (&Sfile_symlink_p
);
6459 defsubr (&Sfile_directory_p
);
6460 defsubr (&Sfile_accessible_directory_p
);
6461 defsubr (&Sfile_regular_p
);
6462 defsubr (&Sfile_modes
);
6463 defsubr (&Sset_file_modes
);
6464 defsubr (&Sset_default_file_modes
);
6465 defsubr (&Sdefault_file_modes
);
6466 defsubr (&Sfile_newer_than_file_p
);
6467 defsubr (&Sinsert_file_contents
);
6468 defsubr (&Swrite_region
);
6469 defsubr (&Scar_less_than_car
);
6470 defsubr (&Sverify_visited_file_modtime
);
6471 defsubr (&Sclear_visited_file_modtime
);
6472 defsubr (&Svisited_file_modtime
);
6473 defsubr (&Sset_visited_file_modtime
);
6474 defsubr (&Sdo_auto_save
);
6475 defsubr (&Sset_buffer_auto_saved
);
6476 defsubr (&Sclear_buffer_auto_save_failure
);
6477 defsubr (&Srecent_auto_save_p
);
6479 defsubr (&Sread_file_name_internal
);
6480 defsubr (&Sread_file_name
);
6483 defsubr (&Sunix_sync
);