1 /* File IO for GNU Emacs.
3 Copyright (C) 1985-1988, 1993-2012 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 3 of the License, or
10 (at your option) any later version.
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. If not, see <http://www.gnu.org/licenses/>. */
24 #include <sys/types.h>
34 #ifdef HAVE_LIBSELINUX
35 #include <selinux/selinux.h>
36 #include <selinux/context.h>
46 #include "intervals.h"
47 #include "character.h"
51 #include "blockinput.h"
53 #include "dispextern.h"
61 #endif /* not WINDOWSNT */
65 #include <sys/param.h>
70 /* On Windows, drive letters must be alphabetic - on DOS, the Netware
71 redirector allows the six letters between 'Z' and 'a' as well. */
73 #define IS_DRIVE(x) ((x) >= 'A' && (x) <= 'z')
76 #define IS_DRIVE(x) c_isalpha (x)
78 /* Need to lower-case the drive letter, or else expanded
79 filenames will sometimes compare unequal, because
80 `expand-file-name' doesn't always down-case the drive letter. */
81 #define DRIVE_LETTER(x) c_tolower (x)
85 #include <stat-time.h>
93 /* True during writing of auto-save files. */
94 static bool auto_saving
;
96 /* Nonzero umask during creation of auto-save directories. */
97 static mode_t auto_saving_dir_umask
;
99 /* Set by auto_save_1 to mode of original file so Fwrite_region will create
100 a new file with the same mode as the original. */
101 static mode_t auto_save_mode_bits
;
103 /* Set by auto_save_1 if an error occurred during the last auto-save. */
104 static bool auto_save_error_occurred
;
106 /* The symbol bound to coding-system-for-read when
107 insert-file-contents is called for recovering a file. This is not
108 an actual coding system name, but just an indicator to tell
109 insert-file-contents to use `emacs-mule' with a special flag for
110 auto saving and recovering a file. */
111 static Lisp_Object Qauto_save_coding
;
113 /* Property name of a file name handler,
114 which gives a list of operations it handles.. */
115 static Lisp_Object Qoperations
;
117 /* Lisp functions for translating file formats. */
118 static Lisp_Object Qformat_decode
, Qformat_annotate_function
;
120 /* Lisp function for setting buffer-file-coding-system and the
121 multibyteness of the current buffer after inserting a file. */
122 static Lisp_Object Qafter_insert_file_set_coding
;
124 static Lisp_Object Qwrite_region_annotate_functions
;
125 /* Each time an annotation function changes the buffer, the new buffer
127 static Lisp_Object Vwrite_region_annotation_buffers
;
132 static Lisp_Object Qdelete_by_moving_to_trash
;
134 /* Lisp function for moving files to trash. */
135 static Lisp_Object Qmove_file_to_trash
;
137 /* Lisp function for recursively copying directories. */
138 static Lisp_Object Qcopy_directory
;
140 /* Lisp function for recursively deleting directories. */
141 static Lisp_Object Qdelete_directory
;
146 Lisp_Object Qfile_error
;
147 static Lisp_Object Qfile_already_exists
, Qfile_date_error
;
148 static Lisp_Object Qexcl
;
149 Lisp_Object Qfile_name_history
;
151 static Lisp_Object Qcar_less_than_car
;
153 static bool a_write (int, Lisp_Object
, ptrdiff_t, ptrdiff_t,
154 Lisp_Object
*, struct coding_system
*);
155 static bool e_write (int, Lisp_Object
, ptrdiff_t, ptrdiff_t,
156 struct coding_system
*);
160 report_file_error (const char *string
, Lisp_Object data
)
162 Lisp_Object errstring
;
166 synchronize_system_messages_locale ();
167 str
= strerror (errorno
);
168 errstring
= code_convert_string_norecord (build_unibyte_string (str
),
169 Vlocale_coding_system
, 0);
175 xsignal (Qfile_already_exists
, Fcons (errstring
, data
));
178 /* System error messages are capitalized. Downcase the initial
179 unless it is followed by a slash. (The slash case caters to
180 error messages that begin with "I/O" or, in German, "E/A".) */
181 if (STRING_MULTIBYTE (errstring
)
182 && ! EQ (Faref (errstring
, make_number (1)), make_number ('/')))
186 str
= SSDATA (errstring
);
187 c
= STRING_CHAR ((unsigned char *) str
);
188 Faset (errstring
, make_number (0), make_number (downcase (c
)));
191 xsignal (Qfile_error
,
192 Fcons (build_string (string
), Fcons (errstring
, data
)));
197 close_file_unwind (Lisp_Object fd
)
199 emacs_close (XFASTINT (fd
));
203 /* Restore point, having saved it as a marker. */
206 restore_point_unwind (Lisp_Object location
)
208 Fgoto_char (location
);
209 Fset_marker (location
, Qnil
, Qnil
);
214 static Lisp_Object Qexpand_file_name
;
215 static Lisp_Object Qsubstitute_in_file_name
;
216 static Lisp_Object Qdirectory_file_name
;
217 static Lisp_Object Qfile_name_directory
;
218 static Lisp_Object Qfile_name_nondirectory
;
219 static Lisp_Object Qunhandled_file_name_directory
;
220 static Lisp_Object Qfile_name_as_directory
;
221 static Lisp_Object Qcopy_file
;
222 static Lisp_Object Qmake_directory_internal
;
223 static Lisp_Object Qmake_directory
;
224 static Lisp_Object Qdelete_directory_internal
;
225 Lisp_Object Qdelete_file
;
226 static Lisp_Object Qrename_file
;
227 static Lisp_Object Qadd_name_to_file
;
228 static Lisp_Object Qmake_symbolic_link
;
229 Lisp_Object Qfile_exists_p
;
230 static Lisp_Object Qfile_executable_p
;
231 static Lisp_Object Qfile_readable_p
;
232 static Lisp_Object Qfile_writable_p
;
233 static Lisp_Object Qfile_symlink_p
;
234 static Lisp_Object Qaccess_file
;
235 Lisp_Object Qfile_directory_p
;
236 static Lisp_Object Qfile_regular_p
;
237 static Lisp_Object Qfile_accessible_directory_p
;
238 static Lisp_Object Qfile_modes
;
239 static Lisp_Object Qset_file_modes
;
240 static Lisp_Object Qset_file_times
;
241 static Lisp_Object Qfile_selinux_context
;
242 static Lisp_Object Qset_file_selinux_context
;
243 static Lisp_Object Qfile_acl
;
244 static Lisp_Object Qset_file_acl
;
245 static Lisp_Object Qfile_newer_than_file_p
;
246 Lisp_Object Qinsert_file_contents
;
247 Lisp_Object Qwrite_region
;
248 static Lisp_Object Qverify_visited_file_modtime
;
249 static Lisp_Object Qset_visited_file_modtime
;
251 DEFUN ("find-file-name-handler", Ffind_file_name_handler
,
252 Sfind_file_name_handler
, 2, 2, 0,
253 doc
: /* Return FILENAME's handler function for OPERATION, if it has one.
254 Otherwise, return nil.
255 A file name is handled if one of the regular expressions in
256 `file-name-handler-alist' matches it.
258 If OPERATION equals `inhibit-file-name-operation', then we ignore
259 any handlers that are members of `inhibit-file-name-handlers',
260 but we still do run any other handlers. This lets handlers
261 use the standard functions without calling themselves recursively. */)
262 (Lisp_Object filename
, Lisp_Object operation
)
264 /* This function must not munge the match data. */
265 Lisp_Object chain
, inhibited_handlers
, result
;
269 CHECK_STRING (filename
);
271 if (EQ (operation
, Vinhibit_file_name_operation
))
272 inhibited_handlers
= Vinhibit_file_name_handlers
;
274 inhibited_handlers
= Qnil
;
276 for (chain
= Vfile_name_handler_alist
; CONSP (chain
);
277 chain
= XCDR (chain
))
283 Lisp_Object string
= XCAR (elt
);
285 Lisp_Object handler
= XCDR (elt
);
286 Lisp_Object operations
= Qnil
;
288 if (SYMBOLP (handler
))
289 operations
= Fget (handler
, Qoperations
);
292 && (match_pos
= fast_string_match (string
, filename
)) > pos
293 && (NILP (operations
) || ! NILP (Fmemq (operation
, operations
))))
297 handler
= XCDR (elt
);
298 tem
= Fmemq (handler
, inhibited_handlers
);
312 DEFUN ("file-name-directory", Ffile_name_directory
, Sfile_name_directory
,
314 doc
: /* Return the directory component in file name FILENAME.
315 Return nil if FILENAME does not include a directory.
316 Otherwise return a directory name.
317 Given a Unix syntax file name, returns a string ending in slash. */)
318 (Lisp_Object filename
)
321 register const char *beg
;
326 register const char *p
;
329 CHECK_STRING (filename
);
331 /* If the file name has special constructs in it,
332 call the corresponding file handler. */
333 handler
= Ffind_file_name_handler (filename
, Qfile_name_directory
);
336 Lisp_Object handled_name
= call2 (handler
, Qfile_name_directory
,
338 return STRINGP (handled_name
) ? handled_name
: Qnil
;
342 beg
= alloca (SBYTES (filename
) + 1);
343 memcpy (beg
, SSDATA (filename
), SBYTES (filename
) + 1);
345 beg
= SSDATA (filename
);
347 p
= beg
+ SBYTES (filename
);
349 while (p
!= beg
&& !IS_DIRECTORY_SEP (p
[-1])
351 /* only recognize drive specifier at the beginning */
353 /* handle the "/:d:foo" and "/:foo" cases correctly */
354 && ((p
== beg
+ 2 && !IS_DIRECTORY_SEP (*beg
))
355 || (p
== beg
+ 4 && IS_DIRECTORY_SEP (*beg
))))
362 /* Expansion of "c:" to drive and default directory. */
365 /* MAXPATHLEN+1 is guaranteed to be enough space for getdefdir. */
366 char *res
= alloca (MAXPATHLEN
+ 1);
369 if (p
== beg
+ 4 && IS_DIRECTORY_SEP (*beg
) && beg
[1] == ':')
371 memcpy (res
, beg
, 2);
376 if (getdefdir (c_toupper (*beg
) - 'A' + 1, r
))
378 if (!IS_DIRECTORY_SEP (res
[strlen (res
) - 1]))
381 p
= beg
+ strlen (beg
);
384 tem_fn
= ENCODE_FILE (make_specified_string (beg
, -1, p
- beg
,
385 STRING_MULTIBYTE (filename
)));
386 dostounix_filename (SSDATA (tem_fn
));
387 return DECODE_FILE (tem_fn
);
389 return make_specified_string (beg
, -1, p
- beg
, STRING_MULTIBYTE (filename
));
393 DEFUN ("file-name-nondirectory", Ffile_name_nondirectory
,
394 Sfile_name_nondirectory
, 1, 1, 0,
395 doc
: /* Return file name FILENAME sans its directory.
396 For example, in a Unix-syntax file name,
397 this is everything after the last slash,
398 or the entire name if it contains no slash. */)
399 (Lisp_Object filename
)
401 register const char *beg
, *p
, *end
;
404 CHECK_STRING (filename
);
406 /* If the file name has special constructs in it,
407 call the corresponding file handler. */
408 handler
= Ffind_file_name_handler (filename
, Qfile_name_nondirectory
);
411 Lisp_Object handled_name
= call2 (handler
, Qfile_name_nondirectory
,
413 if (STRINGP (handled_name
))
415 error ("Invalid handler in `file-name-handler-alist'");
418 beg
= SSDATA (filename
);
419 end
= p
= beg
+ SBYTES (filename
);
421 while (p
!= beg
&& !IS_DIRECTORY_SEP (p
[-1])
423 /* only recognize drive specifier at beginning */
425 /* handle the "/:d:foo" case correctly */
426 && (p
== beg
+ 2 || (p
== beg
+ 4 && IS_DIRECTORY_SEP (*beg
))))
431 return make_specified_string (p
, -1, end
- p
, STRING_MULTIBYTE (filename
));
434 DEFUN ("unhandled-file-name-directory", Funhandled_file_name_directory
,
435 Sunhandled_file_name_directory
, 1, 1, 0,
436 doc
: /* Return a directly usable directory name somehow associated with FILENAME.
437 A `directly usable' directory name is one that may be used without the
438 intervention of any file handler.
439 If FILENAME is a directly usable file itself, return
440 \(file-name-directory FILENAME).
441 If FILENAME refers to a file which is not accessible from a local process,
442 then this should return nil.
443 The `call-process' and `start-process' functions use this function to
444 get a current directory to run processes in. */)
445 (Lisp_Object filename
)
449 /* If the file name has special constructs in it,
450 call the corresponding file handler. */
451 handler
= Ffind_file_name_handler (filename
, Qunhandled_file_name_directory
);
454 Lisp_Object handled_name
= call2 (handler
, Qunhandled_file_name_directory
,
456 return STRINGP (handled_name
) ? handled_name
: Qnil
;
459 return Ffile_name_directory (filename
);
462 /* Convert from file name SRC of length SRCLEN to directory name
463 in DST. On UNIX, just make sure there is a terminating /.
464 Return the length of DST in bytes. */
467 file_name_as_directory (char *dst
, const char *src
, ptrdiff_t srclen
)
479 if (!IS_DIRECTORY_SEP (dst
[srclen
- 1]))
481 dst
[srclen
] = DIRECTORY_SEP
;
482 dst
[srclen
+ 1] = '\0';
487 Lisp_Object tem_fn
= make_specified_string (dst
, -1, srclen
, 1);
489 tem_fn
= ENCODE_FILE (tem_fn
);
490 dostounix_filename (SSDATA (tem_fn
));
491 tem_fn
= DECODE_FILE (tem_fn
);
492 memcpy (dst
, SSDATA (tem_fn
), (srclen
= SBYTES (tem_fn
)) + 1);
498 DEFUN ("file-name-as-directory", Ffile_name_as_directory
,
499 Sfile_name_as_directory
, 1, 1, 0,
500 doc
: /* Return a string representing the file name FILE interpreted as a directory.
501 This operation exists because a directory is also a file, but its name as
502 a directory is different from its name as a file.
503 The result can be used as the value of `default-directory'
504 or passed as second argument to `expand-file-name'.
505 For a Unix-syntax file name, just appends a slash. */)
516 /* If the file name has special constructs in it,
517 call the corresponding file handler. */
518 handler
= Ffind_file_name_handler (file
, Qfile_name_as_directory
);
521 Lisp_Object handled_name
= call2 (handler
, Qfile_name_as_directory
,
523 if (STRINGP (handled_name
))
525 error ("Invalid handler in `file-name-handler-alist'");
528 buf
= alloca (SBYTES (file
) + 10);
529 length
= file_name_as_directory (buf
, SSDATA (file
), SBYTES (file
));
530 return make_specified_string (buf
, -1, length
, STRING_MULTIBYTE (file
));
533 /* Convert from directory name SRC of length SRCLEN to
534 file name in DST. On UNIX, just make sure there isn't
535 a terminating /. Return the length of DST in bytes. */
538 directory_file_name (char *dst
, char *src
, ptrdiff_t srclen
)
540 /* Process as Unix format: just remove any final slash.
541 But leave "/" unchanged; do not change it to "". */
544 && IS_DIRECTORY_SEP (dst
[srclen
- 1])
546 && !IS_ANY_SEP (dst
[srclen
- 2])
555 Lisp_Object tem_fn
= make_specified_string (dst
, -1, srclen
, 1);
557 tem_fn
= ENCODE_FILE (tem_fn
);
558 dostounix_filename (SSDATA (tem_fn
));
559 tem_fn
= DECODE_FILE (tem_fn
);
560 memcpy (dst
, SSDATA (tem_fn
), (srclen
= SBYTES (tem_fn
)) + 1);
566 DEFUN ("directory-file-name", Fdirectory_file_name
, Sdirectory_file_name
,
568 doc
: /* Returns the file name of the directory named DIRECTORY.
569 This is the name of the file that holds the data for the directory DIRECTORY.
570 This operation exists because a directory is also a file, but its name as
571 a directory is different from its name as a file.
572 In Unix-syntax, this function just removes the final slash. */)
573 (Lisp_Object directory
)
579 CHECK_STRING (directory
);
581 if (NILP (directory
))
584 /* If the file name has special constructs in it,
585 call the corresponding file handler. */
586 handler
= Ffind_file_name_handler (directory
, Qdirectory_file_name
);
589 Lisp_Object handled_name
= call2 (handler
, Qdirectory_file_name
,
591 if (STRINGP (handled_name
))
593 error ("Invalid handler in `file-name-handler-alist'");
596 buf
= alloca (SBYTES (directory
) + 20);
597 length
= directory_file_name (buf
, SSDATA (directory
), SBYTES (directory
));
598 return make_specified_string (buf
, -1, length
, STRING_MULTIBYTE (directory
));
601 static const char make_temp_name_tbl
[64] =
603 'A','B','C','D','E','F','G','H',
604 'I','J','K','L','M','N','O','P',
605 'Q','R','S','T','U','V','W','X',
606 'Y','Z','a','b','c','d','e','f',
607 'g','h','i','j','k','l','m','n',
608 'o','p','q','r','s','t','u','v',
609 'w','x','y','z','0','1','2','3',
610 '4','5','6','7','8','9','-','_'
613 static unsigned make_temp_name_count
, make_temp_name_count_initialized_p
;
615 /* Value is a temporary file name starting with PREFIX, a string.
617 The Emacs process number forms part of the result, so there is
618 no danger of generating a name being used by another process.
619 In addition, this function makes an attempt to choose a name
620 which has no existing file. To make this work, PREFIX should be
621 an absolute file name.
623 BASE64_P means add the pid as 3 characters in base64
624 encoding. In this case, 6 characters will be added to PREFIX to
625 form the file name. Otherwise, if Emacs is running on a system
626 with long file names, add the pid as a decimal number.
628 This function signals an error if no unique file name could be
632 make_temp_name (Lisp_Object prefix
, bool base64_p
)
638 char pidbuf
[INT_BUFSIZE_BOUND (printmax_t
)];
641 CHECK_STRING (prefix
);
643 /* VAL is created by adding 6 characters to PREFIX. The first
644 three are the PID of this process, in base 64, and the second
645 three are incremented if the file already exists. This ensures
646 262144 unique file names per PID per PREFIX. */
652 pidbuf
[0] = make_temp_name_tbl
[pid
& 63], pid
>>= 6;
653 pidbuf
[1] = make_temp_name_tbl
[pid
& 63], pid
>>= 6;
654 pidbuf
[2] = make_temp_name_tbl
[pid
& 63], pid
>>= 6;
659 #ifdef HAVE_LONG_FILE_NAMES
660 pidlen
= sprintf (pidbuf
, "%"pMd
, pid
);
662 pidbuf
[0] = make_temp_name_tbl
[pid
& 63], pid
>>= 6;
663 pidbuf
[1] = make_temp_name_tbl
[pid
& 63], pid
>>= 6;
664 pidbuf
[2] = make_temp_name_tbl
[pid
& 63], pid
>>= 6;
669 len
= SBYTES (prefix
); clen
= SCHARS (prefix
);
670 val
= make_uninit_multibyte_string (clen
+ 3 + pidlen
, len
+ 3 + pidlen
);
671 if (!STRING_MULTIBYTE (prefix
))
672 STRING_SET_UNIBYTE (val
);
674 memcpy (data
, SSDATA (prefix
), len
);
677 memcpy (p
, pidbuf
, pidlen
);
680 /* Here we try to minimize useless stat'ing when this function is
681 invoked many times successively with the same PREFIX. We achieve
682 this by initializing count to a random value, and incrementing it
685 We don't want make-temp-name to be called while dumping,
686 because then make_temp_name_count_initialized_p would get set
687 and then make_temp_name_count would not be set when Emacs starts. */
689 if (!make_temp_name_count_initialized_p
)
691 make_temp_name_count
= time (NULL
);
692 make_temp_name_count_initialized_p
= 1;
697 unsigned num
= make_temp_name_count
;
699 p
[0] = make_temp_name_tbl
[num
& 63], num
>>= 6;
700 p
[1] = make_temp_name_tbl
[num
& 63], num
>>= 6;
701 p
[2] = make_temp_name_tbl
[num
& 63], num
>>= 6;
703 /* Poor man's congruential RN generator. Replace with
704 ++make_temp_name_count for debugging. */
705 make_temp_name_count
+= 25229;
706 make_temp_name_count
%= 225307;
708 if (!check_existing (data
))
710 /* We want to return only if errno is ENOENT. */
714 /* The error here is dubious, but there is little else we
715 can do. The alternatives are to return nil, which is
716 as bad as (and in many cases worse than) throwing the
717 error, or to ignore the error, which will likely result
718 in looping through 225307 stat's, which is not only
719 dog-slow, but also useless since eventually nil would
720 have to be returned anyway. */
721 report_file_error ("Cannot create temporary name for prefix",
722 Fcons (prefix
, Qnil
));
729 DEFUN ("make-temp-name", Fmake_temp_name
, Smake_temp_name
, 1, 1, 0,
730 doc
: /* Generate temporary file name (string) starting with PREFIX (a string).
731 The Emacs process number forms part of the result,
732 so there is no danger of generating a name being used by another process.
734 In addition, this function makes an attempt to choose a name
735 which has no existing file. To make this work,
736 PREFIX should be an absolute file name.
738 There is a race condition between calling `make-temp-name' and creating the
739 file which opens all kinds of security holes. For that reason, you should
740 probably use `make-temp-file' instead, except in three circumstances:
742 * If you are creating the file in the user's home directory.
743 * If you are creating a directory rather than an ordinary file.
744 * If you are taking special precautions as `make-temp-file' does. */)
747 return make_temp_name (prefix
, 0);
752 DEFUN ("expand-file-name", Fexpand_file_name
, Sexpand_file_name
, 1, 2, 0,
753 doc
: /* Convert filename NAME to absolute, and canonicalize it.
754 Second arg DEFAULT-DIRECTORY is directory to start with if NAME is relative
755 \(does not start with slash or tilde); if DEFAULT-DIRECTORY is nil or missing,
756 the current buffer's value of `default-directory' is used.
757 NAME should be a string that is a valid file name for the underlying
759 File name components that are `.' are removed, and
760 so are file name components followed by `..', along with the `..' itself;
761 note that these simplifications are done without checking the resulting
762 file names in the file system.
763 Multiple consecutive slashes are collapsed into a single slash,
764 except at the beginning of the file name when they are significant (e.g.,
765 UNC file names on MS-Windows.)
766 An initial `~/' expands to your home directory.
767 An initial `~USER/' expands to USER's home directory.
768 See also the function `substitute-in-file-name'.
770 For technical reasons, this function can return correct but
771 non-intuitive results for the root directory; for instance,
772 \(expand-file-name ".." "/") returns "/..". For this reason, use
773 \(directory-file-name (file-name-directory dirname)) to traverse a
774 filesystem tree, not (expand-file-name ".." dirname). */)
775 (Lisp_Object name
, Lisp_Object default_directory
)
777 /* These point to SDATA and need to be careful with string-relocation
778 during GC (via DECODE_FILE). */
781 /* This should only point to alloca'd data. */
788 bool collapse_newdir
= 1;
792 Lisp_Object handler
, result
, handled_name
;
798 /* If the file name has special constructs in it,
799 call the corresponding file handler. */
800 handler
= Ffind_file_name_handler (name
, Qexpand_file_name
);
803 handled_name
= call3 (handler
, Qexpand_file_name
,
804 name
, default_directory
);
805 if (STRINGP (handled_name
))
807 error ("Invalid handler in `file-name-handler-alist'");
811 /* Use the buffer's default-directory if DEFAULT_DIRECTORY is omitted. */
812 if (NILP (default_directory
))
813 default_directory
= BVAR (current_buffer
, directory
);
814 if (! STRINGP (default_directory
))
817 /* "/" is not considered a root directory on DOS_NT, so using "/"
818 here causes an infinite recursion in, e.g., the following:
820 (let (default-directory)
821 (expand-file-name "a"))
823 To avoid this, we set default_directory to the root of the
825 default_directory
= build_string (emacs_root_dir ());
827 default_directory
= build_string ("/");
831 if (!NILP (default_directory
))
833 handler
= Ffind_file_name_handler (default_directory
, Qexpand_file_name
);
836 handled_name
= call3 (handler
, Qexpand_file_name
,
837 name
, default_directory
);
838 if (STRINGP (handled_name
))
840 error ("Invalid handler in `file-name-handler-alist'");
845 char *o
= SSDATA (default_directory
);
847 /* Make sure DEFAULT_DIRECTORY is properly expanded.
848 It would be better to do this down below where we actually use
849 default_directory. Unfortunately, calling Fexpand_file_name recursively
850 could invoke GC, and the strings might be relocated. This would
851 be annoying because we have pointers into strings lying around
852 that would need adjusting, and people would add new pointers to
853 the code and forget to adjust them, resulting in intermittent bugs.
854 Putting this call here avoids all that crud.
856 The EQ test avoids infinite recursion. */
857 if (! NILP (default_directory
) && !EQ (default_directory
, name
)
858 /* Save time in some common cases - as long as default_directory
859 is not relative, it can be canonicalized with name below (if it
860 is needed at all) without requiring it to be expanded now. */
862 /* Detect MSDOS file names with drive specifiers. */
863 && ! (IS_DRIVE (o
[0]) && IS_DEVICE_SEP (o
[1])
864 && IS_DIRECTORY_SEP (o
[2]))
866 /* Detect Windows file names in UNC format. */
867 && ! (IS_DIRECTORY_SEP (o
[0]) && IS_DIRECTORY_SEP (o
[1]))
869 #else /* not DOS_NT */
870 /* Detect Unix absolute file names (/... alone is not absolute on
872 && ! (IS_DIRECTORY_SEP (o
[0]))
873 #endif /* not DOS_NT */
879 default_directory
= Fexpand_file_name (default_directory
, Qnil
);
883 multibyte
= STRING_MULTIBYTE (name
);
884 if (multibyte
!= STRING_MULTIBYTE (default_directory
))
887 default_directory
= string_to_multibyte (default_directory
);
890 name
= string_to_multibyte (name
);
895 /* Make a local copy of nm[] to protect it from GC in DECODE_FILE below. */
896 nm
= alloca (SBYTES (name
) + 1);
897 memcpy (nm
, SSDATA (name
), SBYTES (name
) + 1);
900 /* Note if special escape prefix is present, but remove for now. */
901 if (nm
[0] == '/' && nm
[1] == ':')
907 /* Find and remove drive specifier if present; this makes nm absolute
908 even if the rest of the name appears to be relative. Only look for
909 drive specifier at the beginning. */
910 if (IS_DRIVE (nm
[0]) && IS_DEVICE_SEP (nm
[1]))
912 drive
= (unsigned char) nm
[0];
917 /* If we see "c://somedir", we want to strip the first slash after the
918 colon when stripping the drive letter. Otherwise, this expands to
920 if (drive
&& IS_DIRECTORY_SEP (nm
[0]) && IS_DIRECTORY_SEP (nm
[1]))
923 /* Discard any previous drive specifier if nm is now in UNC format. */
924 if (IS_DIRECTORY_SEP (nm
[0]) && IS_DIRECTORY_SEP (nm
[1]))
928 #endif /* WINDOWSNT */
931 /* If nm is absolute, look for `/./' or `/../' or `//''sequences; if
932 none are found, we can probably return right away. We will avoid
933 allocating a new string if name is already fully expanded. */
935 IS_DIRECTORY_SEP (nm
[0])
937 && drive
&& !is_escaped
940 && (drive
|| IS_DIRECTORY_SEP (nm
[1])) && !is_escaped
944 /* If it turns out that the filename we want to return is just a
945 suffix of FILENAME, we don't need to go through and edit
946 things; we just need to construct a new string using data
947 starting at the middle of FILENAME. If we set LOSE, that
948 means we've discovered that we can't do that cool trick. */
954 /* Since we know the name is absolute, we can assume that each
955 element starts with a "/". */
957 /* "." and ".." are hairy. */
958 if (IS_DIRECTORY_SEP (p
[0])
960 && (IS_DIRECTORY_SEP (p
[2])
962 || (p
[2] == '.' && (IS_DIRECTORY_SEP (p
[3])
965 /* We want to replace multiple `/' in a row with a single
968 && IS_DIRECTORY_SEP (p
[0])
969 && IS_DIRECTORY_SEP (p
[1]))
976 /* Make sure directories are all separated with /, but
977 avoid allocation of a new string when not required. */
980 Lisp_Object tem_name
= make_specified_string (nm
, -1, strlen (nm
),
983 tem_name
= ENCODE_FILE (tem_name
);
984 dostounix_filename (SSDATA (tem_name
));
985 tem_name
= DECODE_FILE (tem_name
);
986 memcpy (nm
, SSDATA (tem_name
), SBYTES (tem_name
) + 1);
989 dostounix_filename (nm
);
991 if (IS_DIRECTORY_SEP (nm
[1]))
993 if (strcmp (nm
, SSDATA (name
)) != 0)
994 name
= make_specified_string (nm
, -1, strlen (nm
), multibyte
);
998 /* Drive must be set, so this is okay. */
999 if (strcmp (nm
- 2, SSDATA (name
)) != 0)
1003 name
= make_specified_string (nm
, -1, p
- nm
, multibyte
);
1004 temp
[0] = DRIVE_LETTER (drive
);
1005 name
= concat2 (build_string (temp
), name
);
1008 #else /* not DOS_NT */
1009 if (strcmp (nm
, SSDATA (name
)) == 0)
1011 return make_specified_string (nm
, -1, strlen (nm
), multibyte
);
1012 #endif /* not DOS_NT */
1016 /* At this point, nm might or might not be an absolute file name. We
1017 need to expand ~ or ~user if present, otherwise prefix nm with
1018 default_directory if nm is not absolute, and finally collapse /./
1019 and /foo/../ sequences.
1021 We set newdir to be the appropriate prefix if one is needed:
1022 - the relevant user directory if nm starts with ~ or ~user
1023 - the specified drive's working dir (DOS/NT only) if nm does not
1025 - the value of default_directory.
1027 Note that these prefixes are not guaranteed to be absolute (except
1028 for the working dir of a drive). Therefore, to ensure we always
1029 return an absolute name, if the final prefix is not absolute we
1030 append it to the current working directory. */
1034 if (nm
[0] == '~') /* prefix ~ */
1036 if (IS_DIRECTORY_SEP (nm
[1])
1037 || nm
[1] == 0) /* ~ by itself */
1041 if (!(newdir
= egetenv ("HOME")))
1044 /* `egetenv' may return a unibyte string, which will bite us since
1045 we expect the directory to be multibyte. */
1046 tem
= build_string (newdir
);
1047 if (!STRING_MULTIBYTE (tem
))
1049 hdir
= DECODE_FILE (tem
);
1050 newdir
= SSDATA (hdir
);
1053 collapse_newdir
= 0;
1056 else /* ~user/filename */
1059 for (p
= nm
; *p
&& (!IS_DIRECTORY_SEP (*p
)); p
++);
1060 o
= alloca (p
- nm
+ 1);
1061 memcpy (o
, nm
, p
- nm
);
1065 pw
= getpwnam (o
+ 1);
1069 newdir
= pw
->pw_dir
;
1072 collapse_newdir
= 0;
1076 /* If we don't find a user of that name, leave the name
1077 unchanged; don't move nm forward to p. */
1082 /* On DOS and Windows, nm is absolute if a drive name was specified;
1083 use the drive's current directory as the prefix if needed. */
1084 if (!newdir
&& drive
)
1086 /* Get default directory if needed to make nm absolute. */
1088 if (!IS_DIRECTORY_SEP (nm
[0]))
1090 adir
= alloca (MAXPATHLEN
+ 1);
1091 if (!getdefdir (c_toupper (drive
) - 'A' + 1, adir
))
1096 /* Either nm starts with /, or drive isn't mounted. */
1098 adir
[0] = DRIVE_LETTER (drive
);
1107 /* Finally, if no prefix has been specified and nm is not absolute,
1108 then it must be expanded relative to default_directory. */
1112 /* /... alone is not absolute on DOS and Windows. */
1113 && !IS_DIRECTORY_SEP (nm
[0])
1116 && !(IS_DIRECTORY_SEP (nm
[0]) && IS_DIRECTORY_SEP (nm
[1]))
1120 newdir
= SSDATA (default_directory
);
1122 /* Note if special escape prefix is present, but remove for now. */
1123 if (newdir
[0] == '/' && newdir
[1] == ':')
1134 /* First ensure newdir is an absolute name. */
1136 /* Detect MSDOS file names with drive specifiers. */
1137 ! (IS_DRIVE (newdir
[0])
1138 && IS_DEVICE_SEP (newdir
[1]) && IS_DIRECTORY_SEP (newdir
[2]))
1140 /* Detect Windows file names in UNC format. */
1141 && ! (IS_DIRECTORY_SEP (newdir
[0]) && IS_DIRECTORY_SEP (newdir
[1]))
1145 /* Effectively, let newdir be (expand-file-name newdir cwd).
1146 Because of the admonition against calling expand-file-name
1147 when we have pointers into lisp strings, we accomplish this
1148 indirectly by prepending newdir to nm if necessary, and using
1149 cwd (or the wd of newdir's drive) as the new newdir. */
1151 if (IS_DRIVE (newdir
[0]) && IS_DEVICE_SEP (newdir
[1]))
1153 drive
= (unsigned char) newdir
[0];
1156 if (!IS_DIRECTORY_SEP (nm
[0]))
1158 ptrdiff_t newlen
= strlen (newdir
);
1159 char *tmp
= alloca (newlen
+ strlen (nm
) + 2);
1160 file_name_as_directory (tmp
, newdir
, newlen
);
1164 adir
= alloca (MAXPATHLEN
+ 1);
1167 if (!getdefdir (c_toupper (drive
) - 'A' + 1, adir
))
1171 getcwd (adir
, MAXPATHLEN
+ 1);
1175 /* Strip off drive name from prefix, if present. */
1176 if (IS_DRIVE (newdir
[0]) && IS_DEVICE_SEP (newdir
[1]))
1182 /* Keep only a prefix from newdir if nm starts with slash
1183 (//server/share for UNC, nothing otherwise). */
1184 if (IS_DIRECTORY_SEP (nm
[0]) && collapse_newdir
)
1187 if (IS_DIRECTORY_SEP (newdir
[0]) && IS_DIRECTORY_SEP (newdir
[1]))
1189 char *adir
= strcpy (alloca (strlen (newdir
) + 1), newdir
);
1191 while (*p
&& !IS_DIRECTORY_SEP (*p
)) p
++;
1193 while (*p
&& !IS_DIRECTORY_SEP (*p
)) p
++;
1206 /* Get rid of any slash at the end of newdir, unless newdir is
1207 just / or // (an incomplete UNC name). */
1208 length
= strlen (newdir
);
1210 if (length
> 1 && IS_DIRECTORY_SEP (newdir
[length
- 1])
1212 && !(length
== 2 && IS_DIRECTORY_SEP (newdir
[0]))
1216 char *temp
= alloca (length
);
1217 memcpy (temp
, newdir
, length
- 1);
1218 temp
[length
- 1] = 0;
1229 /* Now concatenate the directory and name to new space in the stack frame. */
1230 tlen
+= strlen (nm
) + 1;
1232 /* Reserve space for drive specifier and escape prefix, since either
1233 or both may need to be inserted. (The Microsoft x86 compiler
1234 produces incorrect code if the following two lines are combined.) */
1235 target
= alloca (tlen
+ 4);
1237 #else /* not DOS_NT */
1238 target
= alloca (tlen
);
1239 #endif /* not DOS_NT */
1244 if (nm
[0] == 0 || IS_DIRECTORY_SEP (nm
[0]))
1247 /* If newdir is effectively "C:/", then the drive letter will have
1248 been stripped and newdir will be "/". Concatenating with an
1249 absolute directory in nm produces "//", which will then be
1250 incorrectly treated as a network share. Ignore newdir in
1251 this case (keeping the drive letter). */
1252 if (!(drive
&& nm
[0] && IS_DIRECTORY_SEP (newdir
[0])
1253 && newdir
[1] == '\0'))
1255 strcpy (target
, newdir
);
1258 file_name_as_directory (target
, newdir
, length
);
1261 strcat (target
, nm
);
1263 /* Now canonicalize by removing `//', `/.' and `/foo/..' if they
1271 if (!IS_DIRECTORY_SEP (*p
))
1275 else if (p
[1] == '.'
1276 && (IS_DIRECTORY_SEP (p
[2])
1279 /* If "/." is the entire filename, keep the "/". Otherwise,
1280 just delete the whole "/.". */
1281 if (o
== target
&& p
[2] == '\0')
1285 else if (p
[1] == '.' && p
[2] == '.'
1286 /* `/../' is the "superroot" on certain file systems.
1287 Turned off on DOS_NT systems because they have no
1288 "superroot" and because this causes us to produce
1289 file names like "d:/../foo" which fail file-related
1290 functions of the underlying OS. (To reproduce, try a
1291 long series of "../../" in default_directory, longer
1292 than the number of levels from the root.) */
1296 && (IS_DIRECTORY_SEP (p
[3]) || p
[3] == 0))
1301 while (o
!= target
&& (--o
) && !IS_DIRECTORY_SEP (*o
))
1304 /* Don't go below server level in UNC filenames. */
1305 if (o
== target
+ 1 && IS_DIRECTORY_SEP (*o
)
1306 && IS_DIRECTORY_SEP (*target
))
1310 /* Keep initial / only if this is the whole name. */
1311 if (o
== target
&& IS_ANY_SEP (*o
) && p
[3] == 0)
1315 else if (p
> target
&& IS_DIRECTORY_SEP (p
[1]))
1316 /* Collapse multiple `/' in a row. */
1325 /* At last, set drive name. */
1327 /* Except for network file name. */
1328 if (!(IS_DIRECTORY_SEP (target
[0]) && IS_DIRECTORY_SEP (target
[1])))
1329 #endif /* WINDOWSNT */
1331 if (!drive
) emacs_abort ();
1333 target
[0] = DRIVE_LETTER (drive
);
1336 /* Reinsert the escape prefix if required. */
1343 result
= make_specified_string (target
, -1, o
- target
, multibyte
);
1344 result
= ENCODE_FILE (result
);
1345 dostounix_filename (SSDATA (result
));
1346 result
= DECODE_FILE (result
);
1348 result
= make_specified_string (target
, -1, o
- target
, multibyte
);
1349 #endif /* !DOS_NT */
1352 /* Again look to see if the file name has special constructs in it
1353 and perhaps call the corresponding file handler. This is needed
1354 for filenames such as "/foo/../user@host:/bar/../baz". Expanding
1355 the ".." component gives us "/user@host:/bar/../baz" which needs
1356 to be expanded again. */
1357 handler
= Ffind_file_name_handler (result
, Qexpand_file_name
);
1358 if (!NILP (handler
))
1360 handled_name
= call3 (handler
, Qexpand_file_name
,
1361 result
, default_directory
);
1362 if (STRINGP (handled_name
))
1363 return handled_name
;
1364 error ("Invalid handler in `file-name-handler-alist'");
1371 /* PLEASE DO NOT DELETE THIS COMMENTED-OUT VERSION!
1372 This is the old version of expand-file-name, before it was thoroughly
1373 rewritten for Emacs 10.31. We leave this version here commented-out,
1374 because the code is very complex and likely to have subtle bugs. If
1375 bugs _are_ found, it might be of interest to look at the old code and
1376 see what did it do in the relevant situation.
1378 Don't remove this code: it's true that it will be accessible
1379 from the repository, but a few years from deletion, people will
1380 forget it is there. */
1382 /* Changed this DEFUN to a DEAFUN, so as not to confuse `make-docfile'. */
1383 DEAFUN ("expand-file-name", Fexpand_file_name
, Sexpand_file_name
, 1, 2, 0,
1384 "Convert FILENAME to absolute, and canonicalize it.\n\
1385 Second arg DEFAULT is directory to start with if FILENAME is relative\n\
1386 \(does not start with slash); if DEFAULT is nil or missing,\n\
1387 the current buffer's value of default-directory is used.\n\
1388 Filenames containing `.' or `..' as components are simplified;\n\
1389 initial `~/' expands to your home directory.\n\
1390 See also the function `substitute-in-file-name'.")
1392 Lisp_Object name
, defalt
;
1396 register unsigned char *newdir
, *p
, *o
;
1398 unsigned char *target
;
1401 CHECK_STRING (name
);
1404 /* If nm is absolute, flush ...// and detect /./ and /../.
1405 If no /./ or /../ we can return right away. */
1412 if (p
[0] == '/' && p
[1] == '/')
1414 if (p
[0] == '/' && p
[1] == '~')
1415 nm
= p
+ 1, lose
= 1;
1416 if (p
[0] == '/' && p
[1] == '.'
1417 && (p
[2] == '/' || p
[2] == 0
1418 || (p
[2] == '.' && (p
[3] == '/' || p
[3] == 0))))
1424 if (nm
== SDATA (name
))
1426 return build_string (nm
);
1430 /* Now determine directory to start with and put it in NEWDIR. */
1434 if (nm
[0] == '~') /* prefix ~ */
1435 if (nm
[1] == '/' || nm
[1] == 0)/* ~/filename */
1437 if (!(newdir
= (unsigned char *) egetenv ("HOME")))
1438 newdir
= (unsigned char *) "";
1441 else /* ~user/filename */
1443 /* Get past ~ to user. */
1444 unsigned char *user
= nm
+ 1;
1445 /* Find end of name. */
1446 unsigned char *ptr
= (unsigned char *) strchr (user
, '/');
1447 ptrdiff_t len
= ptr
? ptr
- user
: strlen (user
);
1448 /* Copy the user name into temp storage. */
1449 o
= alloca (len
+ 1);
1450 memcpy (o
, user
, len
);
1453 /* Look up the user name. */
1455 pw
= (struct passwd
*) getpwnam (o
+ 1);
1458 error ("\"%s\" isn't a registered user", o
+ 1);
1460 newdir
= (unsigned char *) pw
->pw_dir
;
1462 /* Discard the user name from NM. */
1466 if (nm
[0] != '/' && !newdir
)
1469 defalt
= current_buffer
->directory
;
1470 CHECK_STRING (defalt
);
1471 newdir
= SDATA (defalt
);
1474 /* Now concatenate the directory and name to new space in the stack frame. */
1476 tlen
= (newdir
? strlen (newdir
) + 1 : 0) + strlen (nm
) + 1;
1477 target
= alloca (tlen
);
1482 if (nm
[0] == 0 || nm
[0] == '/')
1483 strcpy (target
, newdir
);
1485 file_name_as_directory (target
, newdir
);
1488 strcat (target
, nm
);
1490 /* Now canonicalize by removing /. and /foo/.. if they appear. */
1501 else if (!strncmp (p
, "//", 2)
1507 else if (p
[0] == '/' && p
[1] == '.'
1508 && (p
[2] == '/' || p
[2] == 0))
1510 else if (!strncmp (p
, "/..", 3)
1511 /* `/../' is the "superroot" on certain file systems. */
1513 && (p
[3] == '/' || p
[3] == 0))
1515 while (o
!= target
&& *--o
!= '/')
1517 if (o
== target
&& *o
== '/')
1527 return make_string (target
, o
- target
);
1531 /* If /~ or // appears, discard everything through first slash. */
1533 file_name_absolute_p (const char *filename
)
1536 (IS_DIRECTORY_SEP (*filename
) || *filename
== '~'
1538 || (IS_DRIVE (*filename
) && IS_DEVICE_SEP (filename
[1])
1539 && IS_DIRECTORY_SEP (filename
[2]))
1545 search_embedded_absfilename (char *nm
, char *endp
)
1549 for (p
= nm
+ 1; p
< endp
; p
++)
1551 if (IS_DIRECTORY_SEP (p
[-1])
1552 && file_name_absolute_p (p
)
1553 #if defined (WINDOWSNT) || defined (CYGWIN)
1554 /* // at start of file name is meaningful in Apollo,
1555 WindowsNT and Cygwin systems. */
1556 && !(IS_DIRECTORY_SEP (p
[0]) && p
- 1 == nm
)
1557 #endif /* not (WINDOWSNT || CYGWIN) */
1560 for (s
= p
; *s
&& !IS_DIRECTORY_SEP (*s
); s
++);
1561 if (p
[0] == '~' && s
> p
+ 1) /* We've got "/~something/". */
1563 char *o
= alloca (s
- p
+ 1);
1565 memcpy (o
, p
, s
- p
);
1568 /* If we have ~user and `user' exists, discard
1569 everything up to ~. But if `user' does not exist, leave
1570 ~user alone, it might be a literal file name. */
1572 pw
= getpwnam (o
+ 1);
1584 DEFUN ("substitute-in-file-name", Fsubstitute_in_file_name
,
1585 Ssubstitute_in_file_name
, 1, 1, 0,
1586 doc
: /* Substitute environment variables referred to in FILENAME.
1587 `$FOO' where FOO is an environment variable name means to substitute
1588 the value of that variable. The variable name should be terminated
1589 with a character not a letter, digit or underscore; otherwise, enclose
1590 the entire variable name in braces.
1592 If `/~' appears, all of FILENAME through that `/' is discarded.
1593 If `//' appears, everything up to and including the first of
1594 those `/' is discarded. */)
1595 (Lisp_Object filename
)
1597 char *nm
, *s
, *p
, *o
, *x
, *endp
;
1598 char *target
= NULL
;
1599 ptrdiff_t total
= 0;
1600 bool substituted
= 0;
1603 Lisp_Object handler
;
1605 CHECK_STRING (filename
);
1607 multibyte
= STRING_MULTIBYTE (filename
);
1609 /* If the file name has special constructs in it,
1610 call the corresponding file handler. */
1611 handler
= Ffind_file_name_handler (filename
, Qsubstitute_in_file_name
);
1612 if (!NILP (handler
))
1614 Lisp_Object handled_name
= call2 (handler
, Qsubstitute_in_file_name
,
1616 if (STRINGP (handled_name
))
1617 return handled_name
;
1618 error ("Invalid handler in `file-name-handler-alist'");
1621 /* Always work on a copy of the string, in case GC happens during
1622 decode of environment variables, causing the original Lisp_String
1623 data to be relocated. */
1624 nm
= alloca (SBYTES (filename
) + 1);
1625 memcpy (nm
, SDATA (filename
), SBYTES (filename
) + 1);
1629 Lisp_Object encoded_filename
= ENCODE_FILE (filename
);
1632 dostounix_filename (SDATA (encoded_filename
));
1633 tem_fn
= DECODE_FILE (encoded_filename
);
1634 nm
= alloca (SBYTES (tem_fn
) + 1);
1635 memcpy (nm
, SDATA (tem_fn
), SBYTES (tem_fn
) + 1);
1636 substituted
= (memcmp (nm
, SDATA (filename
), SBYTES (filename
)) != 0);
1641 endp
= nm
+ SBYTES (filename
);
1643 /* If /~ or // appears, discard everything through first slash. */
1644 p
= search_embedded_absfilename (nm
, endp
);
1646 /* Start over with the new string, so we check the file-name-handler
1647 again. Important with filenames like "/home/foo//:/hello///there"
1648 which would substitute to "/:/hello///there" rather than "/there". */
1649 return Fsubstitute_in_file_name
1650 (make_specified_string (p
, -1, endp
- p
, multibyte
));
1652 /* See if any variables are substituted into the string
1653 and find the total length of their values in `total'. */
1655 for (p
= nm
; p
!= endp
;)
1665 /* "$$" means a single "$". */
1674 while (p
!= endp
&& *p
!= '}') p
++;
1675 if (*p
!= '}') goto missingclose
;
1681 while (p
!= endp
&& (c_isalnum (*p
) || *p
== '_')) p
++;
1685 /* Copy out the variable name. */
1686 target
= alloca (s
- o
+ 1);
1687 memcpy (target
, o
, s
- o
);
1690 strupr (target
); /* $home == $HOME etc. */
1693 /* Get variable value. */
1694 o
= egetenv (target
);
1697 /* Don't try to guess a maximum length - UTF8 can use up to
1698 four bytes per character. This code is unlikely to run
1699 in a situation that requires performance, so decoding the
1700 env variables twice should be acceptable. Note that
1701 decoding may cause a garbage collect. */
1702 Lisp_Object orig
, decoded
;
1703 orig
= build_unibyte_string (o
);
1704 decoded
= DECODE_FILE (orig
);
1705 total
+= SBYTES (decoded
);
1715 /* If substitution required, recopy the string and do it. */
1716 /* Make space in stack frame for the new copy. */
1717 xnm
= alloca (SBYTES (filename
) + total
+ 1);
1720 /* Copy the rest of the name through, replacing $ constructs with values. */
1737 while (p
!= endp
&& *p
!= '}') p
++;
1738 if (*p
!= '}') goto missingclose
;
1744 while (p
!= endp
&& (c_isalnum (*p
) || *p
== '_')) p
++;
1748 /* Copy out the variable name. */
1749 target
= alloca (s
- o
+ 1);
1750 memcpy (target
, o
, s
- o
);
1753 strupr (target
); /* $home == $HOME etc. */
1756 /* Get variable value. */
1757 o
= egetenv (target
);
1761 strcpy (x
, target
); x
+= strlen (target
);
1765 Lisp_Object orig
, decoded
;
1766 ptrdiff_t orig_length
, decoded_length
;
1767 orig_length
= strlen (o
);
1768 orig
= make_unibyte_string (o
, orig_length
);
1769 decoded
= DECODE_FILE (orig
);
1770 decoded_length
= SBYTES (decoded
);
1771 memcpy (x
, SDATA (decoded
), decoded_length
);
1772 x
+= decoded_length
;
1774 /* If environment variable needed decoding, return value
1775 needs to be multibyte. */
1776 if (decoded_length
!= orig_length
1777 || memcmp (SDATA (decoded
), o
, orig_length
))
1784 /* If /~ or // appears, discard everything through first slash. */
1785 while ((p
= search_embedded_absfilename (xnm
, x
)) != NULL
)
1786 /* This time we do not start over because we've already expanded envvars
1787 and replaced $$ with $. Maybe we should start over as well, but we'd
1788 need to quote some $ to $$ first. */
1791 return make_specified_string (xnm
, -1, x
- xnm
, multibyte
);
1794 error ("Bad format environment-variable substitution");
1796 error ("Missing \"}\" in environment-variable substitution");
1798 error ("Substituting nonexistent environment variable \"%s\"", target
);
1804 /* A slightly faster and more convenient way to get
1805 (directory-file-name (expand-file-name FOO)). */
1808 expand_and_dir_to_file (Lisp_Object filename
, Lisp_Object defdir
)
1810 register Lisp_Object absname
;
1812 absname
= Fexpand_file_name (filename
, defdir
);
1814 /* Remove final slash, if any (unless this is the root dir).
1815 stat behaves differently depending! */
1816 if (SCHARS (absname
) > 1
1817 && IS_DIRECTORY_SEP (SREF (absname
, SBYTES (absname
) - 1))
1818 && !IS_DEVICE_SEP (SREF (absname
, SBYTES (absname
) - 2)))
1819 /* We cannot take shortcuts; they might be wrong for magic file names. */
1820 absname
= Fdirectory_file_name (absname
);
1824 /* Signal an error if the file ABSNAME already exists.
1825 If INTERACTIVE, ask the user whether to proceed,
1826 and bypass the error if the user says to go ahead.
1827 QUERYSTRING is a name for the action that is being considered
1830 *STATPTR is used to store the stat information if the file exists.
1831 If the file does not exist, STATPTR->st_mode is set to 0.
1832 If STATPTR is null, we don't store into it.
1834 If QUICK, ask for y or n, not yes or no. */
1837 barf_or_query_if_file_exists (Lisp_Object absname
, const char *querystring
,
1838 bool interactive
, struct stat
*statptr
,
1841 Lisp_Object tem
, encoded_filename
;
1842 struct stat statbuf
;
1843 struct gcpro gcpro1
;
1845 encoded_filename
= ENCODE_FILE (absname
);
1847 /* `stat' is a good way to tell whether the file exists,
1848 regardless of what access permissions it has. */
1849 if (lstat (SSDATA (encoded_filename
), &statbuf
) >= 0)
1851 if (S_ISDIR (statbuf
.st_mode
))
1852 xsignal2 (Qfile_error
,
1853 build_string ("File is a directory"), absname
);
1856 xsignal2 (Qfile_already_exists
,
1857 build_string ("File already exists"), absname
);
1859 tem
= format2 ("File %s already exists; %s anyway? ",
1860 absname
, build_string (querystring
));
1862 tem
= call1 (intern ("y-or-n-p"), tem
);
1864 tem
= do_yes_or_no_p (tem
);
1867 xsignal2 (Qfile_already_exists
,
1868 build_string ("File already exists"), absname
);
1875 statptr
->st_mode
= 0;
1880 DEFUN ("copy-file", Fcopy_file
, Scopy_file
, 2, 6,
1881 "fCopy file: \nGCopy %s to file: \np\nP",
1882 doc
: /* Copy FILE to NEWNAME. Both args must be strings.
1883 If NEWNAME names a directory, copy FILE there.
1885 This function always sets the file modes of the output file to match
1888 The optional third argument OK-IF-ALREADY-EXISTS specifies what to do
1889 if file NEWNAME already exists. If OK-IF-ALREADY-EXISTS is nil, we
1890 signal a `file-already-exists' error without overwriting. If
1891 OK-IF-ALREADY-EXISTS is a number, we request confirmation from the user
1892 about overwriting; this is what happens in interactive use with M-x.
1893 Any other value for OK-IF-ALREADY-EXISTS means to overwrite the
1896 Fourth arg KEEP-TIME non-nil means give the output file the same
1897 last-modified time as the old one. (This works on only some systems.)
1899 A prefix arg makes KEEP-TIME non-nil.
1901 If PRESERVE-UID-GID is non-nil, we try to transfer the
1902 uid and gid of FILE to NEWNAME.
1904 If PRESERVE-EXTENDED-ATTRIBUTES is non-nil, we try to copy additional
1905 attributes of FILE to NEWNAME, such as its SELinux context and ACL
1906 entries (depending on how Emacs was built). */)
1907 (Lisp_Object file
, Lisp_Object newname
, Lisp_Object ok_if_already_exists
, Lisp_Object keep_time
, Lisp_Object preserve_uid_gid
, Lisp_Object preserve_extended_attributes
)
1911 char buf
[16 * 1024];
1912 struct stat st
, out_st
;
1913 Lisp_Object handler
;
1914 struct gcpro gcpro1
, gcpro2
, gcpro3
, gcpro4
;
1915 ptrdiff_t count
= SPECPDL_INDEX ();
1916 Lisp_Object encoded_file
, encoded_newname
;
1918 security_context_t con
;
1921 #ifdef HAVE_POSIX_ACL
1925 encoded_file
= encoded_newname
= Qnil
;
1926 GCPRO4 (file
, newname
, encoded_file
, encoded_newname
);
1927 CHECK_STRING (file
);
1928 CHECK_STRING (newname
);
1930 if (!NILP (Ffile_directory_p (newname
)))
1931 newname
= Fexpand_file_name (Ffile_name_nondirectory (file
), newname
);
1933 newname
= Fexpand_file_name (newname
, Qnil
);
1935 file
= Fexpand_file_name (file
, Qnil
);
1937 /* If the input file name has special constructs in it,
1938 call the corresponding file handler. */
1939 handler
= Ffind_file_name_handler (file
, Qcopy_file
);
1940 /* Likewise for output file name. */
1942 handler
= Ffind_file_name_handler (newname
, Qcopy_file
);
1943 if (!NILP (handler
))
1944 RETURN_UNGCPRO (call7 (handler
, Qcopy_file
, file
, newname
,
1945 ok_if_already_exists
, keep_time
, preserve_uid_gid
,
1946 preserve_extended_attributes
));
1948 encoded_file
= ENCODE_FILE (file
);
1949 encoded_newname
= ENCODE_FILE (newname
);
1951 if (NILP (ok_if_already_exists
)
1952 || INTEGERP (ok_if_already_exists
))
1953 barf_or_query_if_file_exists (newname
, "copy to it",
1954 INTEGERP (ok_if_already_exists
), &out_st
, 0);
1955 else if (stat (SSDATA (encoded_newname
), &out_st
) < 0)
1959 if (!CopyFile (SDATA (encoded_file
),
1960 SDATA (encoded_newname
),
1962 report_file_error ("Copying file", Fcons (file
, Fcons (newname
, Qnil
)));
1963 /* CopyFile retains the timestamp by default. */
1964 else if (NILP (keep_time
))
1970 filename
= SDATA (encoded_newname
);
1972 /* Ensure file is writable while its modified time is set. */
1973 attributes
= GetFileAttributes (filename
);
1974 SetFileAttributes (filename
, attributes
& ~FILE_ATTRIBUTE_READONLY
);
1975 now
= current_emacs_time ();
1976 if (set_file_times (-1, filename
, now
, now
))
1978 /* Restore original attributes. */
1979 SetFileAttributes (filename
, attributes
);
1980 xsignal2 (Qfile_date_error
,
1981 build_string ("Cannot set file date"), newname
);
1983 /* Restore original attributes. */
1984 SetFileAttributes (filename
, attributes
);
1986 #else /* not WINDOWSNT */
1988 ifd
= emacs_open (SSDATA (encoded_file
), O_RDONLY
, 0);
1992 report_file_error ("Opening input file", Fcons (file
, Qnil
));
1994 record_unwind_protect (close_file_unwind
, make_number (ifd
));
1996 if (fstat (ifd
, &st
) != 0)
1997 report_file_error ("Input file status", Fcons (file
, Qnil
));
1999 if (!NILP (preserve_extended_attributes
))
2002 if (is_selinux_enabled ())
2004 conlength
= fgetfilecon (ifd
, &con
);
2005 if (conlength
== -1)
2006 report_file_error ("Doing fgetfilecon", Fcons (file
, Qnil
));
2010 #ifdef HAVE_POSIX_ACL
2011 acl
= acl_get_fd (ifd
);
2012 if (acl
== NULL
&& errno
!= ENOTSUP
)
2013 report_file_error ("Getting ACL", Fcons (file
, Qnil
));
2017 if (out_st
.st_mode
!= 0
2018 && st
.st_dev
== out_st
.st_dev
&& st
.st_ino
== out_st
.st_ino
)
2021 report_file_error ("Input and output files are the same",
2022 Fcons (file
, Fcons (newname
, Qnil
)));
2025 /* We can copy only regular files. */
2026 if (!S_ISREG (st
.st_mode
))
2028 /* Get a better looking error message. */
2029 errno
= S_ISDIR (st
.st_mode
) ? EISDIR
: EINVAL
;
2030 report_file_error ("Non-regular file", Fcons (file
, Qnil
));
2034 /* System's default file type was set to binary by _fmode in emacs.c. */
2035 ofd
= emacs_open (SDATA (encoded_newname
),
2036 O_WRONLY
| O_TRUNC
| O_CREAT
2037 | (NILP (ok_if_already_exists
) ? O_EXCL
: 0),
2038 S_IREAD
| S_IWRITE
);
2039 #else /* not MSDOS */
2041 mode_t new_mask
= !NILP (preserve_uid_gid
) ? 0600 : 0666;
2042 new_mask
&= st
.st_mode
;
2043 ofd
= emacs_open (SSDATA (encoded_newname
),
2044 (O_WRONLY
| O_TRUNC
| O_CREAT
2045 | (NILP (ok_if_already_exists
) ? O_EXCL
: 0)),
2048 #endif /* not MSDOS */
2050 report_file_error ("Opening output file", Fcons (newname
, Qnil
));
2052 record_unwind_protect (close_file_unwind
, make_number (ofd
));
2056 while ((n
= emacs_read (ifd
, buf
, sizeof buf
)) > 0)
2057 if (emacs_write (ofd
, buf
, n
) != n
)
2058 report_file_error ("I/O error", Fcons (newname
, Qnil
));
2062 /* Preserve the original file modes, and if requested, also its
2065 mode_t mode_mask
= 07777;
2066 if (!NILP (preserve_uid_gid
))
2068 /* Attempt to change owner and group. If that doesn't work
2069 attempt to change just the group, as that is sometimes allowed.
2070 Adjust the mode mask to eliminate setuid or setgid bits
2071 that are inappropriate if the owner and group are wrong. */
2072 if (fchown (ofd
, st
.st_uid
, st
.st_gid
) != 0)
2074 mode_mask
&= ~06000;
2075 if (fchown (ofd
, -1, st
.st_gid
) == 0)
2079 if (fchmod (ofd
, st
.st_mode
& mode_mask
) != 0)
2080 report_file_error ("Doing chmod", Fcons (newname
, Qnil
));
2082 #endif /* not MSDOS */
2087 /* Set the modified context back to the file. */
2088 bool fail
= fsetfilecon (ofd
, con
) != 0;
2089 /* See http://debbugs.gnu.org/11245 for ENOTSUP. */
2090 if (fail
&& errno
!= ENOTSUP
)
2091 report_file_error ("Doing fsetfilecon", Fcons (newname
, Qnil
));
2097 #ifdef HAVE_POSIX_ACL
2100 bool fail
= acl_set_fd (ofd
, acl
) != 0;
2101 if (fail
&& errno
!= ENOTSUP
)
2102 report_file_error ("Setting ACL", Fcons (newname
, Qnil
));
2108 if (!NILP (keep_time
))
2110 EMACS_TIME atime
= get_stat_atime (&st
);
2111 EMACS_TIME mtime
= get_stat_mtime (&st
);
2112 if (set_file_times (ofd
, SSDATA (encoded_newname
), atime
, mtime
))
2113 xsignal2 (Qfile_date_error
,
2114 build_string ("Cannot set file date"), newname
);
2117 if (emacs_close (ofd
) < 0)
2118 report_file_error ("I/O error", Fcons (newname
, Qnil
));
2123 /* In DJGPP v2.0 and later, fstat usually returns true file mode bits,
2124 and if it can't, it tells so. Otherwise, under MSDOS we usually
2125 get only the READ bit, which will make the copied file read-only,
2126 so it's better not to chmod at all. */
2127 if ((_djstat_flags
& _STFAIL_WRITEBIT
) == 0)
2128 chmod (SDATA (encoded_newname
), st
.st_mode
& 07777);
2130 #endif /* not WINDOWSNT */
2132 /* Discard the unwind protects. */
2133 specpdl_ptr
= specpdl
+ count
;
2139 DEFUN ("make-directory-internal", Fmake_directory_internal
,
2140 Smake_directory_internal
, 1, 1, 0,
2141 doc
: /* Create a new directory named DIRECTORY. */)
2142 (Lisp_Object directory
)
2145 Lisp_Object handler
;
2146 Lisp_Object encoded_dir
;
2148 CHECK_STRING (directory
);
2149 directory
= Fexpand_file_name (directory
, Qnil
);
2151 handler
= Ffind_file_name_handler (directory
, Qmake_directory_internal
);
2152 if (!NILP (handler
))
2153 return call2 (handler
, Qmake_directory_internal
, directory
);
2155 encoded_dir
= ENCODE_FILE (directory
);
2157 dir
= SSDATA (encoded_dir
);
2160 if (mkdir (dir
) != 0)
2162 if (mkdir (dir
, 0777 & ~auto_saving_dir_umask
) != 0)
2164 report_file_error ("Creating directory", list1 (directory
));
2169 DEFUN ("delete-directory-internal", Fdelete_directory_internal
,
2170 Sdelete_directory_internal
, 1, 1, 0,
2171 doc
: /* Delete the directory named DIRECTORY. Does not follow symlinks. */)
2172 (Lisp_Object directory
)
2175 Lisp_Object encoded_dir
;
2177 CHECK_STRING (directory
);
2178 directory
= Fdirectory_file_name (Fexpand_file_name (directory
, Qnil
));
2179 encoded_dir
= ENCODE_FILE (directory
);
2180 dir
= SSDATA (encoded_dir
);
2182 if (rmdir (dir
) != 0)
2183 report_file_error ("Removing directory", list1 (directory
));
2188 DEFUN ("delete-file", Fdelete_file
, Sdelete_file
, 1, 2,
2189 "(list (read-file-name \
2190 (if (and delete-by-moving-to-trash (null current-prefix-arg)) \
2191 \"Move file to trash: \" \"Delete file: \") \
2192 nil default-directory (confirm-nonexistent-file-or-buffer)) \
2193 (null current-prefix-arg))",
2194 doc
: /* Delete file named FILENAME. If it is a symlink, remove the symlink.
2195 If file has multiple names, it continues to exist with the other names.
2196 TRASH non-nil means to trash the file instead of deleting, provided
2197 `delete-by-moving-to-trash' is non-nil.
2199 When called interactively, TRASH is t if no prefix argument is given.
2200 With a prefix argument, TRASH is nil. */)
2201 (Lisp_Object filename
, Lisp_Object trash
)
2203 Lisp_Object handler
;
2204 Lisp_Object encoded_file
;
2205 struct gcpro gcpro1
;
2208 if (!NILP (Ffile_directory_p (filename
))
2209 && NILP (Ffile_symlink_p (filename
)))
2210 xsignal2 (Qfile_error
,
2211 build_string ("Removing old name: is a directory"),
2214 filename
= Fexpand_file_name (filename
, Qnil
);
2216 handler
= Ffind_file_name_handler (filename
, Qdelete_file
);
2217 if (!NILP (handler
))
2218 return call3 (handler
, Qdelete_file
, filename
, trash
);
2220 if (delete_by_moving_to_trash
&& !NILP (trash
))
2221 return call1 (Qmove_file_to_trash
, filename
);
2223 encoded_file
= ENCODE_FILE (filename
);
2225 if (unlink (SSDATA (encoded_file
)) < 0)
2226 report_file_error ("Removing old name", list1 (filename
));
2231 internal_delete_file_1 (Lisp_Object ignore
)
2236 /* Delete file FILENAME, returning true if successful.
2237 This ignores `delete-by-moving-to-trash'. */
2240 internal_delete_file (Lisp_Object filename
)
2244 tem
= internal_condition_case_2 (Fdelete_file
, filename
, Qnil
,
2245 Qt
, internal_delete_file_1
);
2249 DEFUN ("rename-file", Frename_file
, Srename_file
, 2, 3,
2250 "fRename file: \nGRename %s to file: \np",
2251 doc
: /* Rename FILE as NEWNAME. Both args must be strings.
2252 If file has names other than FILE, it continues to have those names.
2253 Signals a `file-already-exists' error if a file NEWNAME already exists
2254 unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.
2255 A number as third arg means request confirmation if NEWNAME already exists.
2256 This is what happens in interactive use with M-x. */)
2257 (Lisp_Object file
, Lisp_Object newname
, Lisp_Object ok_if_already_exists
)
2259 Lisp_Object handler
;
2260 struct gcpro gcpro1
, gcpro2
, gcpro3
, gcpro4
, gcpro5
;
2261 Lisp_Object encoded_file
, encoded_newname
, symlink_target
;
2263 symlink_target
= encoded_file
= encoded_newname
= Qnil
;
2264 GCPRO5 (file
, newname
, encoded_file
, encoded_newname
, symlink_target
);
2265 CHECK_STRING (file
);
2266 CHECK_STRING (newname
);
2267 file
= Fexpand_file_name (file
, Qnil
);
2269 if ((!NILP (Ffile_directory_p (newname
)))
2271 /* If the file names are identical but for the case,
2272 don't attempt to move directory to itself. */
2273 && (NILP (Fstring_equal (Fdowncase (file
), Fdowncase (newname
))))
2277 Lisp_Object fname
= (NILP (Ffile_directory_p (file
))
2278 ? file
: Fdirectory_file_name (file
));
2279 newname
= Fexpand_file_name (Ffile_name_nondirectory (fname
), newname
);
2282 newname
= Fexpand_file_name (newname
, Qnil
);
2284 /* If the file name has special constructs in it,
2285 call the corresponding file handler. */
2286 handler
= Ffind_file_name_handler (file
, Qrename_file
);
2288 handler
= Ffind_file_name_handler (newname
, Qrename_file
);
2289 if (!NILP (handler
))
2290 RETURN_UNGCPRO (call4 (handler
, Qrename_file
,
2291 file
, newname
, ok_if_already_exists
));
2293 encoded_file
= ENCODE_FILE (file
);
2294 encoded_newname
= ENCODE_FILE (newname
);
2297 /* If the file names are identical but for the case, don't ask for
2298 confirmation: they simply want to change the letter-case of the
2300 if (NILP (Fstring_equal (Fdowncase (file
), Fdowncase (newname
))))
2302 if (NILP (ok_if_already_exists
)
2303 || INTEGERP (ok_if_already_exists
))
2304 barf_or_query_if_file_exists (newname
, "rename to it",
2305 INTEGERP (ok_if_already_exists
), 0, 0);
2306 if (rename (SSDATA (encoded_file
), SSDATA (encoded_newname
)) < 0)
2311 symlink_target
= Ffile_symlink_p (file
);
2312 if (! NILP (symlink_target
))
2313 Fmake_symbolic_link (symlink_target
, newname
,
2314 NILP (ok_if_already_exists
) ? Qnil
: Qt
);
2315 else if (!NILP (Ffile_directory_p (file
)))
2316 call4 (Qcopy_directory
, file
, newname
, Qt
, Qnil
);
2318 /* We have already prompted if it was an integer, so don't
2319 have copy-file prompt again. */
2320 Fcopy_file (file
, newname
,
2321 NILP (ok_if_already_exists
) ? Qnil
: Qt
,
2324 count
= SPECPDL_INDEX ();
2325 specbind (Qdelete_by_moving_to_trash
, Qnil
);
2327 if (!NILP (Ffile_directory_p (file
)) && NILP (symlink_target
))
2328 call2 (Qdelete_directory
, file
, Qt
);
2330 Fdelete_file (file
, Qnil
);
2331 unbind_to (count
, Qnil
);
2334 report_file_error ("Renaming", list2 (file
, newname
));
2340 DEFUN ("add-name-to-file", Fadd_name_to_file
, Sadd_name_to_file
, 2, 3,
2341 "fAdd name to file: \nGName to add to %s: \np",
2342 doc
: /* Give FILE additional name NEWNAME. Both args must be strings.
2343 Signals a `file-already-exists' error if a file NEWNAME already exists
2344 unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.
2345 A number as third arg means request confirmation if NEWNAME already exists.
2346 This is what happens in interactive use with M-x. */)
2347 (Lisp_Object file
, Lisp_Object newname
, Lisp_Object ok_if_already_exists
)
2349 Lisp_Object handler
;
2350 Lisp_Object encoded_file
, encoded_newname
;
2351 struct gcpro gcpro1
, gcpro2
, gcpro3
, gcpro4
;
2353 GCPRO4 (file
, newname
, encoded_file
, encoded_newname
);
2354 encoded_file
= encoded_newname
= Qnil
;
2355 CHECK_STRING (file
);
2356 CHECK_STRING (newname
);
2357 file
= Fexpand_file_name (file
, Qnil
);
2359 if (!NILP (Ffile_directory_p (newname
)))
2360 newname
= Fexpand_file_name (Ffile_name_nondirectory (file
), newname
);
2362 newname
= Fexpand_file_name (newname
, Qnil
);
2364 /* If the file name has special constructs in it,
2365 call the corresponding file handler. */
2366 handler
= Ffind_file_name_handler (file
, Qadd_name_to_file
);
2367 if (!NILP (handler
))
2368 RETURN_UNGCPRO (call4 (handler
, Qadd_name_to_file
, file
,
2369 newname
, ok_if_already_exists
));
2371 /* If the new name has special constructs in it,
2372 call the corresponding file handler. */
2373 handler
= Ffind_file_name_handler (newname
, Qadd_name_to_file
);
2374 if (!NILP (handler
))
2375 RETURN_UNGCPRO (call4 (handler
, Qadd_name_to_file
, file
,
2376 newname
, ok_if_already_exists
));
2378 encoded_file
= ENCODE_FILE (file
);
2379 encoded_newname
= ENCODE_FILE (newname
);
2381 if (NILP (ok_if_already_exists
)
2382 || INTEGERP (ok_if_already_exists
))
2383 barf_or_query_if_file_exists (newname
, "make it a new name",
2384 INTEGERP (ok_if_already_exists
), 0, 0);
2386 unlink (SSDATA (newname
));
2387 if (link (SSDATA (encoded_file
), SSDATA (encoded_newname
)) < 0)
2388 report_file_error ("Adding new name", list2 (file
, newname
));
2394 DEFUN ("make-symbolic-link", Fmake_symbolic_link
, Smake_symbolic_link
, 2, 3,
2395 "FMake symbolic link to file: \nGMake symbolic link to file %s: \np",
2396 doc
: /* Make a symbolic link to FILENAME, named LINKNAME.
2397 Both args must be strings.
2398 Signals a `file-already-exists' error if a file LINKNAME already exists
2399 unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.
2400 A number as third arg means request confirmation if LINKNAME already exists.
2401 This happens for interactive use with M-x. */)
2402 (Lisp_Object filename
, Lisp_Object linkname
, Lisp_Object ok_if_already_exists
)
2404 Lisp_Object handler
;
2405 Lisp_Object encoded_filename
, encoded_linkname
;
2406 struct gcpro gcpro1
, gcpro2
, gcpro3
, gcpro4
;
2408 GCPRO4 (filename
, linkname
, encoded_filename
, encoded_linkname
);
2409 encoded_filename
= encoded_linkname
= Qnil
;
2410 CHECK_STRING (filename
);
2411 CHECK_STRING (linkname
);
2412 /* If the link target has a ~, we must expand it to get
2413 a truly valid file name. Otherwise, do not expand;
2414 we want to permit links to relative file names. */
2415 if (SREF (filename
, 0) == '~')
2416 filename
= Fexpand_file_name (filename
, Qnil
);
2418 if (!NILP (Ffile_directory_p (linkname
)))
2419 linkname
= Fexpand_file_name (Ffile_name_nondirectory (filename
), linkname
);
2421 linkname
= Fexpand_file_name (linkname
, Qnil
);
2423 /* If the file name has special constructs in it,
2424 call the corresponding file handler. */
2425 handler
= Ffind_file_name_handler (filename
, Qmake_symbolic_link
);
2426 if (!NILP (handler
))
2427 RETURN_UNGCPRO (call4 (handler
, Qmake_symbolic_link
, filename
,
2428 linkname
, ok_if_already_exists
));
2430 /* If the new link name has special constructs in it,
2431 call the corresponding file handler. */
2432 handler
= Ffind_file_name_handler (linkname
, Qmake_symbolic_link
);
2433 if (!NILP (handler
))
2434 RETURN_UNGCPRO (call4 (handler
, Qmake_symbolic_link
, filename
,
2435 linkname
, ok_if_already_exists
));
2437 encoded_filename
= ENCODE_FILE (filename
);
2438 encoded_linkname
= ENCODE_FILE (linkname
);
2440 if (NILP (ok_if_already_exists
)
2441 || INTEGERP (ok_if_already_exists
))
2442 barf_or_query_if_file_exists (linkname
, "make it a link",
2443 INTEGERP (ok_if_already_exists
), 0, 0);
2444 if (symlink (SSDATA (encoded_filename
), SSDATA (encoded_linkname
)) < 0)
2446 /* If we didn't complain already, silently delete existing file. */
2447 if (errno
== EEXIST
)
2449 unlink (SSDATA (encoded_linkname
));
2450 if (symlink (SSDATA (encoded_filename
), SSDATA (encoded_linkname
))
2457 if (errno
== ENOSYS
)
2460 xsignal1 (Qfile_error
,
2461 build_string ("Symbolic links are not supported"));
2464 report_file_error ("Making symbolic link", list2 (filename
, linkname
));
2471 DEFUN ("file-name-absolute-p", Ffile_name_absolute_p
, Sfile_name_absolute_p
,
2473 doc
: /* Return t if file FILENAME specifies an absolute file name.
2474 On Unix, this is a name starting with a `/' or a `~'. */)
2475 (Lisp_Object filename
)
2477 CHECK_STRING (filename
);
2478 return file_name_absolute_p (SSDATA (filename
)) ? Qt
: Qnil
;
2481 /* Return true if FILENAME exists. */
2483 check_existing (const char *filename
)
2485 return faccessat (AT_FDCWD
, filename
, F_OK
, AT_EACCESS
) == 0;
2488 /* Return true if file FILENAME exists and can be executed. */
2491 check_executable (char *filename
)
2493 return faccessat (AT_FDCWD
, filename
, X_OK
, AT_EACCESS
) == 0;
2496 /* Return true if file FILENAME exists and can be accessed
2497 according to AMODE, which should include W_OK.
2498 On failure, return false and set errno. */
2501 check_writable (const char *filename
, int amode
)
2504 /* FIXME: an faccessat implementation should be added to the
2505 DOS/Windows ports and this #ifdef branch should be removed. */
2507 if (stat (filename
, &st
) < 0)
2510 return (st
.st_mode
& S_IWRITE
|| S_ISDIR (st
.st_mode
));
2511 #else /* not MSDOS */
2512 bool res
= faccessat (AT_FDCWD
, filename
, amode
, AT_EACCESS
) == 0;
2514 /* faccessat may have returned failure because Cygwin couldn't
2515 determine the file's UID or GID; if so, we return success. */
2518 int faccessat_errno
= errno
;
2520 if (stat (filename
, &st
) < 0)
2522 res
= (st
.st_uid
== -1 || st
.st_gid
== -1);
2523 errno
= faccessat_errno
;
2527 #endif /* not MSDOS */
2530 DEFUN ("file-exists-p", Ffile_exists_p
, Sfile_exists_p
, 1, 1, 0,
2531 doc
: /* Return t if file FILENAME exists (whether or not you can read it.)
2532 See also `file-readable-p' and `file-attributes'.
2533 This returns nil for a symlink to a nonexistent file.
2534 Use `file-symlink-p' to test for such links. */)
2535 (Lisp_Object filename
)
2537 Lisp_Object absname
;
2538 Lisp_Object handler
;
2540 CHECK_STRING (filename
);
2541 absname
= Fexpand_file_name (filename
, Qnil
);
2543 /* If the file name has special constructs in it,
2544 call the corresponding file handler. */
2545 handler
= Ffind_file_name_handler (absname
, Qfile_exists_p
);
2546 if (!NILP (handler
))
2547 return call2 (handler
, Qfile_exists_p
, absname
);
2549 absname
= ENCODE_FILE (absname
);
2551 return (check_existing (SSDATA (absname
))) ? Qt
: Qnil
;
2554 DEFUN ("file-executable-p", Ffile_executable_p
, Sfile_executable_p
, 1, 1, 0,
2555 doc
: /* Return t if FILENAME can be executed by you.
2556 For a directory, this means you can access files in that directory. */)
2557 (Lisp_Object filename
)
2559 Lisp_Object absname
;
2560 Lisp_Object handler
;
2562 CHECK_STRING (filename
);
2563 absname
= Fexpand_file_name (filename
, Qnil
);
2565 /* If the file name has special constructs in it,
2566 call the corresponding file handler. */
2567 handler
= Ffind_file_name_handler (absname
, Qfile_executable_p
);
2568 if (!NILP (handler
))
2569 return call2 (handler
, Qfile_executable_p
, absname
);
2571 absname
= ENCODE_FILE (absname
);
2573 return (check_executable (SSDATA (absname
)) ? Qt
: Qnil
);
2576 DEFUN ("file-readable-p", Ffile_readable_p
, Sfile_readable_p
, 1, 1, 0,
2577 doc
: /* Return t if file FILENAME exists and you can read it.
2578 See also `file-exists-p' and `file-attributes'. */)
2579 (Lisp_Object filename
)
2581 Lisp_Object absname
;
2582 Lisp_Object handler
;
2584 CHECK_STRING (filename
);
2585 absname
= Fexpand_file_name (filename
, Qnil
);
2587 /* If the file name has special constructs in it,
2588 call the corresponding file handler. */
2589 handler
= Ffind_file_name_handler (absname
, Qfile_readable_p
);
2590 if (!NILP (handler
))
2591 return call2 (handler
, Qfile_readable_p
, absname
);
2593 absname
= ENCODE_FILE (absname
);
2594 return (faccessat (AT_FDCWD
, SSDATA (absname
), R_OK
, AT_EACCESS
) == 0
2598 DEFUN ("file-writable-p", Ffile_writable_p
, Sfile_writable_p
, 1, 1, 0,
2599 doc
: /* Return t if file FILENAME can be written or created by you. */)
2600 (Lisp_Object filename
)
2602 Lisp_Object absname
, dir
, encoded
;
2603 Lisp_Object handler
;
2605 CHECK_STRING (filename
);
2606 absname
= Fexpand_file_name (filename
, Qnil
);
2608 /* If the file name has special constructs in it,
2609 call the corresponding file handler. */
2610 handler
= Ffind_file_name_handler (absname
, Qfile_writable_p
);
2611 if (!NILP (handler
))
2612 return call2 (handler
, Qfile_writable_p
, absname
);
2614 encoded
= ENCODE_FILE (absname
);
2615 if (check_writable (SSDATA (encoded
), W_OK
))
2617 if (errno
!= ENOENT
)
2620 dir
= Ffile_name_directory (absname
);
2621 eassert (!NILP (dir
));
2623 dir
= Fdirectory_file_name (dir
);
2626 dir
= ENCODE_FILE (dir
);
2628 /* The read-only attribute of the parent directory doesn't affect
2629 whether a file or directory can be created within it. Some day we
2630 should check ACLs though, which do affect this. */
2631 return file_directory_p (SDATA (dir
)) ? Qt
: Qnil
;
2633 return check_writable (SSDATA (dir
), W_OK
| X_OK
) ? Qt
: Qnil
;
2637 DEFUN ("access-file", Faccess_file
, Saccess_file
, 2, 2, 0,
2638 doc
: /* Access file FILENAME, and get an error if that does not work.
2639 The second argument STRING is used in the error message.
2640 If there is no error, returns nil. */)
2641 (Lisp_Object filename
, Lisp_Object string
)
2643 Lisp_Object handler
, encoded_filename
, absname
;
2646 CHECK_STRING (filename
);
2647 absname
= Fexpand_file_name (filename
, Qnil
);
2649 CHECK_STRING (string
);
2651 /* If the file name has special constructs in it,
2652 call the corresponding file handler. */
2653 handler
= Ffind_file_name_handler (absname
, Qaccess_file
);
2654 if (!NILP (handler
))
2655 return call3 (handler
, Qaccess_file
, absname
, string
);
2657 encoded_filename
= ENCODE_FILE (absname
);
2659 fd
= emacs_open (SSDATA (encoded_filename
), O_RDONLY
, 0);
2661 report_file_error (SSDATA (string
), Fcons (filename
, Qnil
));
2667 DEFUN ("file-symlink-p", Ffile_symlink_p
, Sfile_symlink_p
, 1, 1, 0,
2668 doc
: /* Return non-nil if file FILENAME is the name of a symbolic link.
2669 The value is the link target, as a string.
2670 Otherwise it returns nil.
2672 This function returns t when given the name of a symlink that
2673 points to a nonexistent file. */)
2674 (Lisp_Object filename
)
2676 Lisp_Object handler
;
2679 char readlink_buf
[READLINK_BUFSIZE
];
2681 CHECK_STRING (filename
);
2682 filename
= Fexpand_file_name (filename
, Qnil
);
2684 /* If the file name has special constructs in it,
2685 call the corresponding file handler. */
2686 handler
= Ffind_file_name_handler (filename
, Qfile_symlink_p
);
2687 if (!NILP (handler
))
2688 return call2 (handler
, Qfile_symlink_p
, filename
);
2690 filename
= ENCODE_FILE (filename
);
2692 buf
= emacs_readlink (SSDATA (filename
), readlink_buf
);
2696 val
= build_string (buf
);
2697 if (buf
[0] == '/' && strchr (buf
, ':'))
2698 val
= concat2 (build_string ("/:"), val
);
2699 if (buf
!= readlink_buf
)
2701 val
= DECODE_FILE (val
);
2705 DEFUN ("file-directory-p", Ffile_directory_p
, Sfile_directory_p
, 1, 1, 0,
2706 doc
: /* Return t if FILENAME names an existing directory.
2707 Symbolic links to directories count as directories.
2708 See `file-symlink-p' to distinguish symlinks. */)
2709 (Lisp_Object filename
)
2711 Lisp_Object absname
;
2712 Lisp_Object handler
;
2714 absname
= expand_and_dir_to_file (filename
, BVAR (current_buffer
, directory
));
2716 /* If the file name has special constructs in it,
2717 call the corresponding file handler. */
2718 handler
= Ffind_file_name_handler (absname
, Qfile_directory_p
);
2719 if (!NILP (handler
))
2720 return call2 (handler
, Qfile_directory_p
, absname
);
2722 absname
= ENCODE_FILE (absname
);
2724 return file_directory_p (SSDATA (absname
)) ? Qt
: Qnil
;
2727 /* Return true if FILE is a directory or a symlink to a directory. */
2729 file_directory_p (char const *file
)
2732 /* This is cheaper than 'stat'. */
2733 return faccessat (AT_FDCWD
, file
, D_OK
, AT_EACCESS
) == 0;
2736 return stat (file
, &st
) == 0 && S_ISDIR (st
.st_mode
);
2740 DEFUN ("file-accessible-directory-p", Ffile_accessible_directory_p
,
2741 Sfile_accessible_directory_p
, 1, 1, 0,
2742 doc
: /* Return t if file FILENAME names a directory you can open.
2743 For the value to be t, FILENAME must specify the name of a directory as a file,
2744 and the directory must allow you to open files in it. In order to use a
2745 directory as a buffer's current directory, this predicate must return true.
2746 A directory name spec may be given instead; then the value is t
2747 if the directory so specified exists and really is a readable and
2748 searchable directory. */)
2749 (Lisp_Object filename
)
2751 Lisp_Object absname
;
2752 Lisp_Object handler
;
2754 CHECK_STRING (filename
);
2755 absname
= Fexpand_file_name (filename
, Qnil
);
2757 /* If the file name has special constructs in it,
2758 call the corresponding file handler. */
2759 handler
= Ffind_file_name_handler (absname
, Qfile_accessible_directory_p
);
2760 if (!NILP (handler
))
2761 return call2 (handler
, Qfile_accessible_directory_p
, absname
);
2763 absname
= ENCODE_FILE (absname
);
2764 return file_accessible_directory_p (SSDATA (absname
)) ? Qt
: Qnil
;
2767 /* If FILE is a searchable directory or a symlink to a
2768 searchable directory, return true. Otherwise return
2769 false and set errno to an error number. */
2771 file_accessible_directory_p (char const *file
)
2774 /* There's no need to test whether FILE is searchable, as the
2775 searchable/executable bit is invented on DOS_NT platforms. */
2776 return file_directory_p (file
);
2778 /* On POSIXish platforms, use just one system call; this avoids a
2779 race and is typically faster. */
2780 ptrdiff_t len
= strlen (file
);
2786 /* Normally a file "FOO" is an accessible directory if "FOO/." exists.
2787 There are three exceptions: "", "/", and "//". Leave "" alone,
2788 as it's invalid. Append only "." to the other two exceptions as
2789 "/" and "//" are distinct on some platforms, whereas "/", "///",
2790 "////", etc. are all equivalent. */
2795 /* Just check for trailing '/' when deciding whether to append '/'.
2796 That's simpler than testing the two special cases "/" and "//",
2797 and it's a safe optimization here. */
2798 char *buf
= SAFE_ALLOCA (len
+ 3);
2799 memcpy (buf
, file
, len
);
2800 strcpy (buf
+ len
, "/." + (file
[len
- 1] == '/'));
2804 ok
= check_existing (dir
);
2805 saved_errno
= errno
;
2807 errno
= saved_errno
;
2812 DEFUN ("file-regular-p", Ffile_regular_p
, Sfile_regular_p
, 1, 1, 0,
2813 doc
: /* Return t if FILENAME names a regular file.
2814 This is the sort of file that holds an ordinary stream of data bytes.
2815 Symbolic links to regular files count as regular files.
2816 See `file-symlink-p' to distinguish symlinks. */)
2817 (Lisp_Object filename
)
2819 register Lisp_Object absname
;
2821 Lisp_Object handler
;
2823 absname
= expand_and_dir_to_file (filename
, BVAR (current_buffer
, directory
));
2825 /* If the file name has special constructs in it,
2826 call the corresponding file handler. */
2827 handler
= Ffind_file_name_handler (absname
, Qfile_regular_p
);
2828 if (!NILP (handler
))
2829 return call2 (handler
, Qfile_regular_p
, absname
);
2831 absname
= ENCODE_FILE (absname
);
2836 Lisp_Object tem
= Vw32_get_true_file_attributes
;
2838 /* Tell stat to use expensive method to get accurate info. */
2839 Vw32_get_true_file_attributes
= Qt
;
2840 result
= stat (SDATA (absname
), &st
);
2841 Vw32_get_true_file_attributes
= tem
;
2845 return S_ISREG (st
.st_mode
) ? Qt
: Qnil
;
2848 if (stat (SSDATA (absname
), &st
) < 0)
2850 return S_ISREG (st
.st_mode
) ? Qt
: Qnil
;
2854 DEFUN ("file-selinux-context", Ffile_selinux_context
,
2855 Sfile_selinux_context
, 1, 1, 0,
2856 doc
: /* Return SELinux context of file named FILENAME.
2857 The return value is a list (USER ROLE TYPE RANGE), where the list
2858 elements are strings naming the user, role, type, and range of the
2859 file's SELinux security context.
2861 Return (nil nil nil nil) if the file is nonexistent or inaccessible,
2862 or if SELinux is disabled, or if Emacs lacks SELinux support. */)
2863 (Lisp_Object filename
)
2865 Lisp_Object absname
;
2866 Lisp_Object values
[4];
2867 Lisp_Object handler
;
2869 security_context_t con
;
2874 absname
= expand_and_dir_to_file (filename
, BVAR (current_buffer
, directory
));
2876 /* If the file name has special constructs in it,
2877 call the corresponding file handler. */
2878 handler
= Ffind_file_name_handler (absname
, Qfile_selinux_context
);
2879 if (!NILP (handler
))
2880 return call2 (handler
, Qfile_selinux_context
, absname
);
2882 absname
= ENCODE_FILE (absname
);
2889 if (is_selinux_enabled ())
2891 conlength
= lgetfilecon (SSDATA (absname
), &con
);
2894 context
= context_new (con
);
2895 if (context_user_get (context
))
2896 values
[0] = build_string (context_user_get (context
));
2897 if (context_role_get (context
))
2898 values
[1] = build_string (context_role_get (context
));
2899 if (context_type_get (context
))
2900 values
[2] = build_string (context_type_get (context
));
2901 if (context_range_get (context
))
2902 values
[3] = build_string (context_range_get (context
));
2903 context_free (context
);
2909 return Flist (sizeof (values
) / sizeof (values
[0]), values
);
2912 DEFUN ("set-file-selinux-context", Fset_file_selinux_context
,
2913 Sset_file_selinux_context
, 2, 2, 0,
2914 doc
: /* Set SELinux context of file named FILENAME to CONTEXT.
2915 CONTEXT should be a list (USER ROLE TYPE RANGE), where the list
2916 elements are strings naming the components of a SELinux context.
2918 This function does nothing if SELinux is disabled, or if Emacs was not
2919 compiled with SELinux support. */)
2920 (Lisp_Object filename
, Lisp_Object context
)
2922 Lisp_Object absname
;
2923 Lisp_Object handler
;
2925 Lisp_Object encoded_absname
;
2926 Lisp_Object user
= CAR_SAFE (context
);
2927 Lisp_Object role
= CAR_SAFE (CDR_SAFE (context
));
2928 Lisp_Object type
= CAR_SAFE (CDR_SAFE (CDR_SAFE (context
)));
2929 Lisp_Object range
= CAR_SAFE (CDR_SAFE (CDR_SAFE (CDR_SAFE (context
))));
2930 security_context_t con
;
2933 context_t parsed_con
;
2936 absname
= Fexpand_file_name (filename
, BVAR (current_buffer
, directory
));
2938 /* If the file name has special constructs in it,
2939 call the corresponding file handler. */
2940 handler
= Ffind_file_name_handler (absname
, Qset_file_selinux_context
);
2941 if (!NILP (handler
))
2942 return call3 (handler
, Qset_file_selinux_context
, absname
, context
);
2945 if (is_selinux_enabled ())
2947 /* Get current file context. */
2948 encoded_absname
= ENCODE_FILE (absname
);
2949 conlength
= lgetfilecon (SSDATA (encoded_absname
), &con
);
2952 parsed_con
= context_new (con
);
2953 /* Change the parts defined in the parameter.*/
2956 if (context_user_set (parsed_con
, SSDATA (user
)))
2957 error ("Doing context_user_set");
2961 if (context_role_set (parsed_con
, SSDATA (role
)))
2962 error ("Doing context_role_set");
2966 if (context_type_set (parsed_con
, SSDATA (type
)))
2967 error ("Doing context_type_set");
2969 if (STRINGP (range
))
2971 if (context_range_set (parsed_con
, SSDATA (range
)))
2972 error ("Doing context_range_set");
2975 /* Set the modified context back to the file. */
2976 fail
= (lsetfilecon (SSDATA (encoded_absname
),
2977 context_str (parsed_con
))
2979 /* See http://debbugs.gnu.org/11245 for ENOTSUP. */
2980 if (fail
&& errno
!= ENOTSUP
)
2981 report_file_error ("Doing lsetfilecon", Fcons (absname
, Qnil
));
2983 context_free (parsed_con
);
2987 report_file_error ("Doing lgetfilecon", Fcons (absname
, Qnil
));
2994 DEFUN ("file-acl", Ffile_acl
, Sfile_acl
, 1, 1, 0,
2995 doc
: /* Return ACL entries of file named FILENAME, as a string.
2996 Return nil if file does not exist or is not accessible, or if Emacs
2997 was unable to determine the ACL entries. The latter can happen for
2998 local files if Emacs was not compiled with ACL support, or for remote
2999 files if the file handler returns nil for the file's ACL entries. */)
3000 (Lisp_Object filename
)
3002 Lisp_Object absname
;
3003 Lisp_Object handler
;
3004 #ifdef HAVE_POSIX_ACL
3006 Lisp_Object acl_string
;
3010 absname
= expand_and_dir_to_file (filename
,
3011 BVAR (current_buffer
, directory
));
3013 /* If the file name has special constructs in it,
3014 call the corresponding file handler. */
3015 handler
= Ffind_file_name_handler (absname
, Qfile_acl
);
3016 if (!NILP (handler
))
3017 return call2 (handler
, Qfile_acl
, absname
);
3019 #ifdef HAVE_POSIX_ACL
3020 absname
= ENCODE_FILE (absname
);
3022 acl
= acl_get_file (SSDATA (absname
), ACL_TYPE_ACCESS
);
3026 str
= acl_to_text (acl
, NULL
);
3033 acl_string
= build_string (str
);
3043 DEFUN ("set-file-acl", Fset_file_acl
, Sset_file_acl
,
3045 doc
: /* Set ACL of file named FILENAME to ACL-STRING.
3046 ACL-STRING should contain the textual representation of the ACL
3047 entries in a format suitable for the platform.
3049 Setting ACL for local files requires Emacs to be built with ACL
3051 (Lisp_Object filename
, Lisp_Object acl_string
)
3053 Lisp_Object absname
;
3054 Lisp_Object handler
;
3055 #ifdef HAVE_POSIX_ACL
3056 Lisp_Object encoded_absname
;
3061 absname
= Fexpand_file_name (filename
, BVAR (current_buffer
, directory
));
3063 /* If the file name has special constructs in it,
3064 call the corresponding file handler. */
3065 handler
= Ffind_file_name_handler (absname
, Qset_file_acl
);
3066 if (!NILP (handler
))
3067 return call3 (handler
, Qset_file_acl
, absname
, acl_string
);
3069 #ifdef HAVE_POSIX_ACL
3070 if (STRINGP (acl_string
))
3072 acl
= acl_from_text (SSDATA (acl_string
));
3075 report_file_error ("Converting ACL", Fcons (absname
, Qnil
));
3079 encoded_absname
= ENCODE_FILE (absname
);
3081 fail
= (acl_set_file (SSDATA (encoded_absname
), ACL_TYPE_ACCESS
,
3084 if (fail
&& errno
!= ENOTSUP
)
3085 report_file_error ("Setting ACL", Fcons (absname
, Qnil
));
3094 DEFUN ("file-modes", Ffile_modes
, Sfile_modes
, 1, 1, 0,
3095 doc
: /* Return mode bits of file named FILENAME, as an integer.
3096 Return nil, if file does not exist or is not accessible. */)
3097 (Lisp_Object filename
)
3099 Lisp_Object absname
;
3101 Lisp_Object handler
;
3103 absname
= expand_and_dir_to_file (filename
, BVAR (current_buffer
, directory
));
3105 /* If the file name has special constructs in it,
3106 call the corresponding file handler. */
3107 handler
= Ffind_file_name_handler (absname
, Qfile_modes
);
3108 if (!NILP (handler
))
3109 return call2 (handler
, Qfile_modes
, absname
);
3111 absname
= ENCODE_FILE (absname
);
3113 if (stat (SSDATA (absname
), &st
) < 0)
3116 return make_number (st
.st_mode
& 07777);
3119 DEFUN ("set-file-modes", Fset_file_modes
, Sset_file_modes
, 2, 2,
3120 "(let ((file (read-file-name \"File: \"))) \
3121 (list file (read-file-modes nil file)))",
3122 doc
: /* Set mode bits of file named FILENAME to MODE (an integer).
3123 Only the 12 low bits of MODE are used.
3125 Interactively, mode bits are read by `read-file-modes', which accepts
3126 symbolic notation, like the `chmod' command from GNU Coreutils. */)
3127 (Lisp_Object filename
, Lisp_Object mode
)
3129 Lisp_Object absname
, encoded_absname
;
3130 Lisp_Object handler
;
3132 absname
= Fexpand_file_name (filename
, BVAR (current_buffer
, directory
));
3133 CHECK_NUMBER (mode
);
3135 /* If the file name has special constructs in it,
3136 call the corresponding file handler. */
3137 handler
= Ffind_file_name_handler (absname
, Qset_file_modes
);
3138 if (!NILP (handler
))
3139 return call3 (handler
, Qset_file_modes
, absname
, mode
);
3141 encoded_absname
= ENCODE_FILE (absname
);
3143 if (chmod (SSDATA (encoded_absname
), XINT (mode
) & 07777) < 0)
3144 report_file_error ("Doing chmod", Fcons (absname
, Qnil
));
3149 DEFUN ("set-default-file-modes", Fset_default_file_modes
, Sset_default_file_modes
, 1, 1, 0,
3150 doc
: /* Set the file permission bits for newly created files.
3151 The argument MODE should be an integer; only the low 9 bits are used.
3152 This setting is inherited by subprocesses. */)
3155 CHECK_NUMBER (mode
);
3157 umask ((~ XINT (mode
)) & 0777);
3162 DEFUN ("default-file-modes", Fdefault_file_modes
, Sdefault_file_modes
, 0, 0, 0,
3163 doc
: /* Return the default file protection for created files.
3164 The value is an integer. */)
3171 realmask
= umask (0);
3175 XSETINT (value
, (~ realmask
) & 0777);
3180 DEFUN ("set-file-times", Fset_file_times
, Sset_file_times
, 1, 2, 0,
3181 doc
: /* Set times of file FILENAME to TIMESTAMP.
3182 Set both access and modification times.
3183 Return t on success, else nil.
3184 Use the current time if TIMESTAMP is nil. TIMESTAMP is in the format of
3186 (Lisp_Object filename
, Lisp_Object timestamp
)
3188 Lisp_Object absname
, encoded_absname
;
3189 Lisp_Object handler
;
3190 EMACS_TIME t
= lisp_time_argument (timestamp
);
3192 absname
= Fexpand_file_name (filename
, BVAR (current_buffer
, directory
));
3194 /* If the file name has special constructs in it,
3195 call the corresponding file handler. */
3196 handler
= Ffind_file_name_handler (absname
, Qset_file_times
);
3197 if (!NILP (handler
))
3198 return call3 (handler
, Qset_file_times
, absname
, timestamp
);
3200 encoded_absname
= ENCODE_FILE (absname
);
3203 if (set_file_times (-1, SSDATA (encoded_absname
), t
, t
))
3206 /* Setting times on a directory always fails. */
3207 if (file_directory_p (SSDATA (encoded_absname
)))
3210 report_file_error ("Setting file times", Fcons (absname
, Qnil
));
3219 DEFUN ("unix-sync", Funix_sync
, Sunix_sync
, 0, 0, "",
3220 doc
: /* Tell Unix to finish all pending disk updates. */)
3227 #endif /* HAVE_SYNC */
3229 DEFUN ("file-newer-than-file-p", Ffile_newer_than_file_p
, Sfile_newer_than_file_p
, 2, 2, 0,
3230 doc
: /* Return t if file FILE1 is newer than file FILE2.
3231 If FILE1 does not exist, the answer is nil;
3232 otherwise, if FILE2 does not exist, the answer is t. */)
3233 (Lisp_Object file1
, Lisp_Object file2
)
3235 Lisp_Object absname1
, absname2
;
3236 struct stat st1
, st2
;
3237 Lisp_Object handler
;
3238 struct gcpro gcpro1
, gcpro2
;
3240 CHECK_STRING (file1
);
3241 CHECK_STRING (file2
);
3244 GCPRO2 (absname1
, file2
);
3245 absname1
= expand_and_dir_to_file (file1
, BVAR (current_buffer
, directory
));
3246 absname2
= expand_and_dir_to_file (file2
, BVAR (current_buffer
, directory
));
3249 /* If the file name has special constructs in it,
3250 call the corresponding file handler. */
3251 handler
= Ffind_file_name_handler (absname1
, Qfile_newer_than_file_p
);
3253 handler
= Ffind_file_name_handler (absname2
, Qfile_newer_than_file_p
);
3254 if (!NILP (handler
))
3255 return call3 (handler
, Qfile_newer_than_file_p
, absname1
, absname2
);
3257 GCPRO2 (absname1
, absname2
);
3258 absname1
= ENCODE_FILE (absname1
);
3259 absname2
= ENCODE_FILE (absname2
);
3262 if (stat (SSDATA (absname1
), &st1
) < 0)
3265 if (stat (SSDATA (absname2
), &st2
) < 0)
3268 return (EMACS_TIME_GT (get_stat_mtime (&st1
), get_stat_mtime (&st2
))
3272 #ifndef READ_BUF_SIZE
3273 #define READ_BUF_SIZE (64 << 10)
3275 /* Some buffer offsets are stored in 'int' variables. */
3276 verify (READ_BUF_SIZE
<= INT_MAX
);
3278 /* This function is called after Lisp functions to decide a coding
3279 system are called, or when they cause an error. Before they are
3280 called, the current buffer is set unibyte and it contains only a
3281 newly inserted text (thus the buffer was empty before the
3284 The functions may set markers, overlays, text properties, or even
3285 alter the buffer contents, change the current buffer.
3287 Here, we reset all those changes by:
3288 o set back the current buffer.
3289 o move all markers and overlays to BEG.
3290 o remove all text properties.
3291 o set back the buffer multibyteness. */
3294 decide_coding_unwind (Lisp_Object unwind_data
)
3296 Lisp_Object multibyte
, undo_list
, buffer
;
3298 multibyte
= XCAR (unwind_data
);
3299 unwind_data
= XCDR (unwind_data
);
3300 undo_list
= XCAR (unwind_data
);
3301 buffer
= XCDR (unwind_data
);
3303 set_buffer_internal (XBUFFER (buffer
));
3304 adjust_markers_for_delete (BEG
, BEG_BYTE
, Z
, Z_BYTE
);
3305 adjust_overlays_for_delete (BEG
, Z
- BEG
);
3306 set_buffer_intervals (current_buffer
, NULL
);
3307 TEMP_SET_PT_BOTH (BEG
, BEG_BYTE
);
3309 /* Now we are safe to change the buffer's multibyteness directly. */
3310 bset_enable_multibyte_characters (current_buffer
, multibyte
);
3311 bset_undo_list (current_buffer
, undo_list
);
3317 /* Used to pass values from insert-file-contents to read_non_regular. */
3319 static int non_regular_fd
;
3320 static ptrdiff_t non_regular_inserted
;
3321 static int non_regular_nbytes
;
3324 /* Read from a non-regular file.
3325 Read non_regular_nbytes bytes max from non_regular_fd.
3326 Non_regular_inserted specifies where to put the read bytes.
3327 Value is the number of bytes read. */
3330 read_non_regular (Lisp_Object ignore
)
3336 nbytes
= emacs_read (non_regular_fd
,
3337 ((char *) BEG_ADDR
+ PT_BYTE
- BEG_BYTE
3338 + non_regular_inserted
),
3339 non_regular_nbytes
);
3341 return make_number (nbytes
);
3345 /* Condition-case handler used when reading from non-regular files
3346 in insert-file-contents. */
3349 read_non_regular_quit (Lisp_Object ignore
)
3354 /* Reposition FD to OFFSET, based on WHENCE. This acts like lseek
3355 except that it also tests for OFFSET being out of lseek's range. */
3357 emacs_lseek (int fd
, EMACS_INT offset
, int whence
)
3359 /* Use "&" rather than "&&" to suppress a bogus GCC warning; see
3360 <http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43772>. */
3361 if (! ((offset
>= TYPE_MINIMUM (off_t
)) & (offset
<= TYPE_MAXIMUM (off_t
))))
3366 return lseek (fd
, offset
, whence
);
3369 /* Return a special time value indicating the error number ERRNUM. */
3371 time_error_value (int errnum
)
3373 int ns
= (errnum
== ENOENT
|| errnum
== EACCES
|| errnum
== ENOTDIR
3374 ? NONEXISTENT_MODTIME_NSECS
3375 : UNKNOWN_MODTIME_NSECS
);
3376 return make_emacs_time (0, ns
);
3379 DEFUN ("insert-file-contents", Finsert_file_contents
, Sinsert_file_contents
,
3381 doc
: /* Insert contents of file FILENAME after point.
3382 Returns list of absolute file name and number of characters inserted.
3383 If second argument VISIT is non-nil, the buffer's visited filename and
3384 last save file modtime are set, and it is marked unmodified. If
3385 visiting and the file does not exist, visiting is completed before the
3388 The optional third and fourth arguments BEG and END specify what portion
3389 of the file to insert. These arguments count bytes in the file, not
3390 characters in the buffer. If VISIT is non-nil, BEG and END must be nil.
3392 If optional fifth argument REPLACE is non-nil, replace the current
3393 buffer contents (in the accessible portion) with the file contents.
3394 This is better than simply deleting and inserting the whole thing
3395 because (1) it preserves some marker positions and (2) it puts less data
3396 in the undo list. When REPLACE is non-nil, the second return value is
3397 the number of characters that replace previous buffer contents.
3399 This function does code conversion according to the value of
3400 `coding-system-for-read' or `file-coding-system-alist', and sets the
3401 variable `last-coding-system-used' to the coding system actually used. */)
3402 (Lisp_Object filename
, Lisp_Object visit
, Lisp_Object beg
, Lisp_Object end
, Lisp_Object replace
)
3408 ptrdiff_t inserted
= 0;
3411 off_t beg_offset
, end_offset
;
3413 ptrdiff_t count
= SPECPDL_INDEX ();
3414 struct gcpro gcpro1
, gcpro2
, gcpro3
, gcpro4
, gcpro5
;
3415 Lisp_Object handler
, val
, insval
, orig_filename
, old_undo
;
3417 ptrdiff_t total
= 0;
3418 bool not_regular
= 0;
3420 char read_buf
[READ_BUF_SIZE
];
3421 struct coding_system coding
;
3422 char buffer
[1 << 14];
3423 bool replace_handled
= 0;
3424 bool set_coding_system
= 0;
3425 Lisp_Object coding_system
;
3427 Lisp_Object old_Vdeactivate_mark
= Vdeactivate_mark
;
3428 bool we_locked_file
= 0;
3429 bool deferred_remove_unwind_protect
= 0;
3431 if (current_buffer
->base_buffer
&& ! NILP (visit
))
3432 error ("Cannot do file visiting in an indirect buffer");
3434 if (!NILP (BVAR (current_buffer
, read_only
)))
3435 Fbarf_if_buffer_read_only ();
3439 orig_filename
= Qnil
;
3442 GCPRO5 (filename
, val
, p
, orig_filename
, old_undo
);
3444 CHECK_STRING (filename
);
3445 filename
= Fexpand_file_name (filename
, Qnil
);
3447 /* The value Qnil means that the coding system is not yet
3449 coding_system
= Qnil
;
3451 /* If the file name has special constructs in it,
3452 call the corresponding file handler. */
3453 handler
= Ffind_file_name_handler (filename
, Qinsert_file_contents
);
3454 if (!NILP (handler
))
3456 val
= call6 (handler
, Qinsert_file_contents
, filename
,
3457 visit
, beg
, end
, replace
);
3458 if (CONSP (val
) && CONSP (XCDR (val
))
3459 && RANGED_INTEGERP (0, XCAR (XCDR (val
)), ZV
- PT
))
3460 inserted
= XINT (XCAR (XCDR (val
)));
3464 orig_filename
= filename
;
3465 filename
= ENCODE_FILE (filename
);
3471 Lisp_Object tem
= Vw32_get_true_file_attributes
;
3473 /* Tell stat to use expensive method to get accurate info. */
3474 Vw32_get_true_file_attributes
= Qt
;
3475 file_status
= stat (SSDATA (filename
), &st
);
3476 Vw32_get_true_file_attributes
= tem
;
3479 file_status
= stat (SSDATA (filename
), &st
);
3480 #endif /* WINDOWSNT */
3482 if (file_status
== 0)
3483 mtime
= get_stat_mtime (&st
);
3489 report_file_error ("Opening input file", Fcons (orig_filename
, Qnil
));
3490 mtime
= time_error_value (save_errno
);
3493 if (!NILP (Vcoding_system_for_read
))
3494 Fset (Qbuffer_file_coding_system
, Vcoding_system_for_read
);
3498 /* This code will need to be changed in order to work on named
3499 pipes, and it's probably just not worth it. So we should at
3500 least signal an error. */
3501 if (!S_ISREG (st
.st_mode
))
3508 if (! NILP (replace
) || ! NILP (beg
) || ! NILP (end
))
3509 xsignal2 (Qfile_error
,
3510 build_string ("not a regular file"), orig_filename
);
3514 if ((fd
= emacs_open (SSDATA (filename
), O_RDONLY
, 0)) < 0)
3517 /* Replacement should preserve point as it preserves markers. */
3518 if (!NILP (replace
))
3519 record_unwind_protect (restore_point_unwind
, Fpoint_marker ());
3521 record_unwind_protect (close_file_unwind
, make_number (fd
));
3526 if (!NILP (beg
) || !NILP (end
))
3527 error ("Attempt to visit less than an entire file");
3528 if (BEG
< Z
&& NILP (replace
))
3529 error ("Cannot do file visiting in a non-empty buffer");
3534 if (! RANGED_INTEGERP (0, beg
, TYPE_MAXIMUM (off_t
)))
3535 wrong_type_argument (intern ("file-offset"), beg
);
3536 beg_offset
= XFASTINT (beg
);
3543 if (! RANGED_INTEGERP (0, end
, TYPE_MAXIMUM (off_t
)))
3544 wrong_type_argument (intern ("file-offset"), end
);
3545 end_offset
= XFASTINT (end
);
3550 end_offset
= TYPE_MAXIMUM (off_t
);
3553 end_offset
= st
.st_size
;
3555 /* A negative size can happen on a platform that allows file
3556 sizes greater than the maximum off_t value. */
3560 /* The file size returned from stat may be zero, but data
3561 may be readable nonetheless, for example when this is a
3562 file in the /proc filesystem. */
3563 if (end_offset
== 0)
3564 end_offset
= READ_BUF_SIZE
;
3568 /* Check now whether the buffer will become too large,
3569 in the likely case where the file's length is not changing.
3570 This saves a lot of needless work before a buffer overflow. */
3573 /* The likely offset where we will stop reading. We could read
3574 more (or less), if the file grows (or shrinks) as we read it. */
3575 off_t likely_end
= min (end_offset
, st
.st_size
);
3577 if (beg_offset
< likely_end
)
3580 = Z_BYTE
- (!NILP (replace
) ? ZV_BYTE
- BEGV_BYTE
: 0);
3581 ptrdiff_t buf_growth_max
= BUF_BYTES_MAX
- buf_bytes
;
3582 off_t likely_growth
= likely_end
- beg_offset
;
3583 if (buf_growth_max
< likely_growth
)
3588 /* Prevent redisplay optimizations. */
3589 current_buffer
->clip_changed
= 1;
3591 if (EQ (Vcoding_system_for_read
, Qauto_save_coding
))
3593 coding_system
= coding_inherit_eol_type (Qutf_8_emacs
, Qunix
);
3594 setup_coding_system (coding_system
, &coding
);
3595 /* Ensure we set Vlast_coding_system_used. */
3596 set_coding_system
= 1;
3600 /* Decide the coding system to use for reading the file now
3601 because we can't use an optimized method for handling
3602 `coding:' tag if the current buffer is not empty. */
3603 if (!NILP (Vcoding_system_for_read
))
3604 coding_system
= Vcoding_system_for_read
;
3607 /* Don't try looking inside a file for a coding system
3608 specification if it is not seekable. */
3609 if (! not_regular
&& ! NILP (Vset_auto_coding_function
))
3611 /* Find a coding system specified in the heading two
3612 lines or in the tailing several lines of the file.
3613 We assume that the 1K-byte and 3K-byte for heading
3614 and tailing respectively are sufficient for this
3618 if (st
.st_size
<= (1024 * 4))
3619 nread
= emacs_read (fd
, read_buf
, 1024 * 4);
3622 nread
= emacs_read (fd
, read_buf
, 1024);
3626 if (lseek (fd
, - (1024 * 3), SEEK_END
) < 0)
3627 report_file_error ("Setting file position",
3628 Fcons (orig_filename
, Qnil
));
3629 ntail
= emacs_read (fd
, read_buf
+ nread
, 1024 * 3);
3630 nread
= ntail
< 0 ? ntail
: nread
+ ntail
;
3635 error ("IO error reading %s: %s",
3636 SDATA (orig_filename
), emacs_strerror (errno
));
3639 struct buffer
*prev
= current_buffer
;
3640 Lisp_Object workbuf
;
3643 record_unwind_current_buffer ();
3645 workbuf
= Fget_buffer_create (build_string (" *code-converting-work*"));
3646 buf
= XBUFFER (workbuf
);
3648 delete_all_overlays (buf
);
3649 bset_directory (buf
, BVAR (current_buffer
, directory
));
3650 bset_read_only (buf
, Qnil
);
3651 bset_filename (buf
, Qnil
);
3652 bset_undo_list (buf
, Qt
);
3653 eassert (buf
->overlays_before
== NULL
);
3654 eassert (buf
->overlays_after
== NULL
);
3656 set_buffer_internal (buf
);
3658 bset_enable_multibyte_characters (buf
, Qnil
);
3660 insert_1_both ((char *) read_buf
, nread
, nread
, 0, 0, 0);
3661 TEMP_SET_PT_BOTH (BEG
, BEG_BYTE
);
3662 coding_system
= call2 (Vset_auto_coding_function
,
3663 filename
, make_number (nread
));
3664 set_buffer_internal (prev
);
3666 /* Discard the unwind protect for recovering the
3670 /* Rewind the file for the actual read done later. */
3671 if (lseek (fd
, 0, SEEK_SET
) < 0)
3672 report_file_error ("Setting file position",
3673 Fcons (orig_filename
, Qnil
));
3677 if (NILP (coding_system
))
3679 /* If we have not yet decided a coding system, check
3680 file-coding-system-alist. */
3681 Lisp_Object args
[6];
3683 args
[0] = Qinsert_file_contents
, args
[1] = orig_filename
;
3684 args
[2] = visit
, args
[3] = beg
, args
[4] = end
, args
[5] = replace
;
3685 coding_system
= Ffind_operation_coding_system (6, args
);
3686 if (CONSP (coding_system
))
3687 coding_system
= XCAR (coding_system
);
3691 if (NILP (coding_system
))
3692 coding_system
= Qundecided
;
3694 CHECK_CODING_SYSTEM (coding_system
);
3696 if (NILP (BVAR (current_buffer
, enable_multibyte_characters
)))
3697 /* We must suppress all character code conversion except for
3698 end-of-line conversion. */
3699 coding_system
= raw_text_coding_system (coding_system
);
3701 setup_coding_system (coding_system
, &coding
);
3702 /* Ensure we set Vlast_coding_system_used. */
3703 set_coding_system
= 1;
3706 /* If requested, replace the accessible part of the buffer
3707 with the file contents. Avoid replacing text at the
3708 beginning or end of the buffer that matches the file contents;
3709 that preserves markers pointing to the unchanged parts.
3711 Here we implement this feature in an optimized way
3712 for the case where code conversion is NOT needed.
3713 The following if-statement handles the case of conversion
3714 in a less optimal way.
3716 If the code conversion is "automatic" then we try using this
3717 method and hope for the best.
3718 But if we discover the need for conversion, we give up on this method
3719 and let the following if-statement handle the replace job. */
3722 && (NILP (coding_system
)
3723 || ! CODING_REQUIRE_DECODING (&coding
)))
3725 /* same_at_start and same_at_end count bytes,
3726 because file access counts bytes
3727 and BEG and END count bytes. */
3728 ptrdiff_t same_at_start
= BEGV_BYTE
;
3729 ptrdiff_t same_at_end
= ZV_BYTE
;
3731 /* There is still a possibility we will find the need to do code
3732 conversion. If that happens, set this variable to
3733 give up on handling REPLACE in the optimized way. */
3734 bool giveup_match_end
= 0;
3736 if (beg_offset
!= 0)
3738 if (lseek (fd
, beg_offset
, SEEK_SET
) < 0)
3739 report_file_error ("Setting file position",
3740 Fcons (orig_filename
, Qnil
));
3745 /* Count how many chars at the start of the file
3746 match the text at the beginning of the buffer. */
3751 nread
= emacs_read (fd
, buffer
, sizeof buffer
);
3753 error ("IO error reading %s: %s",
3754 SSDATA (orig_filename
), emacs_strerror (errno
));
3755 else if (nread
== 0)
3758 if (CODING_REQUIRE_DETECTION (&coding
))
3760 coding_system
= detect_coding_system ((unsigned char *) buffer
,
3763 setup_coding_system (coding_system
, &coding
);
3766 if (CODING_REQUIRE_DECODING (&coding
))
3767 /* We found that the file should be decoded somehow.
3768 Let's give up here. */
3770 giveup_match_end
= 1;
3775 while (bufpos
< nread
&& same_at_start
< ZV_BYTE
3776 && FETCH_BYTE (same_at_start
) == buffer
[bufpos
])
3777 same_at_start
++, bufpos
++;
3778 /* If we found a discrepancy, stop the scan.
3779 Otherwise loop around and scan the next bufferful. */
3780 if (bufpos
!= nread
)
3784 /* If the file matches the buffer completely,
3785 there's no need to replace anything. */
3786 if (same_at_start
- BEGV_BYTE
== end_offset
- beg_offset
)
3790 /* Truncate the buffer to the size of the file. */
3791 del_range_1 (same_at_start
, same_at_end
, 0, 0);
3796 /* Count how many chars at the end of the file
3797 match the text at the end of the buffer. But, if we have
3798 already found that decoding is necessary, don't waste time. */
3799 while (!giveup_match_end
)
3801 int total_read
, nread
, bufpos
, trial
;
3804 /* At what file position are we now scanning? */
3805 curpos
= end_offset
- (ZV_BYTE
- same_at_end
);
3806 /* If the entire file matches the buffer tail, stop the scan. */
3809 /* How much can we scan in the next step? */
3810 trial
= min (curpos
, sizeof buffer
);
3811 if (lseek (fd
, curpos
- trial
, SEEK_SET
) < 0)
3812 report_file_error ("Setting file position",
3813 Fcons (orig_filename
, Qnil
));
3815 total_read
= nread
= 0;
3816 while (total_read
< trial
)
3818 nread
= emacs_read (fd
, buffer
+ total_read
, trial
- total_read
);
3820 error ("IO error reading %s: %s",
3821 SDATA (orig_filename
), emacs_strerror (errno
));
3822 else if (nread
== 0)
3824 total_read
+= nread
;
3827 /* Scan this bufferful from the end, comparing with
3828 the Emacs buffer. */
3829 bufpos
= total_read
;
3831 /* Compare with same_at_start to avoid counting some buffer text
3832 as matching both at the file's beginning and at the end. */
3833 while (bufpos
> 0 && same_at_end
> same_at_start
3834 && FETCH_BYTE (same_at_end
- 1) == buffer
[bufpos
- 1])
3835 same_at_end
--, bufpos
--;
3837 /* If we found a discrepancy, stop the scan.
3838 Otherwise loop around and scan the preceding bufferful. */
3841 /* If this discrepancy is because of code conversion,
3842 we cannot use this method; giveup and try the other. */
3843 if (same_at_end
> same_at_start
3844 && FETCH_BYTE (same_at_end
- 1) >= 0200
3845 && ! NILP (BVAR (current_buffer
, enable_multibyte_characters
))
3846 && (CODING_MAY_REQUIRE_DECODING (&coding
)))
3847 giveup_match_end
= 1;
3856 if (! giveup_match_end
)
3860 /* We win! We can handle REPLACE the optimized way. */
3862 /* Extend the start of non-matching text area to multibyte
3863 character boundary. */
3864 if (! NILP (BVAR (current_buffer
, enable_multibyte_characters
)))
3865 while (same_at_start
> BEGV_BYTE
3866 && ! CHAR_HEAD_P (FETCH_BYTE (same_at_start
)))
3869 /* Extend the end of non-matching text area to multibyte
3870 character boundary. */
3871 if (! NILP (BVAR (current_buffer
, enable_multibyte_characters
)))
3872 while (same_at_end
< ZV_BYTE
3873 && ! CHAR_HEAD_P (FETCH_BYTE (same_at_end
)))
3876 /* Don't try to reuse the same piece of text twice. */
3877 overlap
= (same_at_start
- BEGV_BYTE
3879 + (! NILP (end
) ? end_offset
: st
.st_size
) - ZV_BYTE
));
3881 same_at_end
+= overlap
;
3883 /* Arrange to read only the nonmatching middle part of the file. */
3884 beg_offset
+= same_at_start
- BEGV_BYTE
;
3885 end_offset
-= ZV_BYTE
- same_at_end
;
3887 del_range_byte (same_at_start
, same_at_end
, 0);
3888 /* Insert from the file at the proper position. */
3889 temp
= BYTE_TO_CHAR (same_at_start
);
3890 SET_PT_BOTH (temp
, same_at_start
);
3892 /* If display currently starts at beginning of line,
3893 keep it that way. */
3894 if (XBUFFER (XWINDOW (selected_window
)->buffer
) == current_buffer
)
3895 XWINDOW (selected_window
)->start_at_line_beg
= !NILP (Fbolp ());
3897 replace_handled
= 1;
3901 /* If requested, replace the accessible part of the buffer
3902 with the file contents. Avoid replacing text at the
3903 beginning or end of the buffer that matches the file contents;
3904 that preserves markers pointing to the unchanged parts.
3906 Here we implement this feature for the case where code conversion
3907 is needed, in a simple way that needs a lot of memory.
3908 The preceding if-statement handles the case of no conversion
3909 in a more optimized way. */
3910 if (!NILP (replace
) && ! replace_handled
&& BEGV
< ZV
)
3912 ptrdiff_t same_at_start
= BEGV_BYTE
;
3913 ptrdiff_t same_at_end
= ZV_BYTE
;
3914 ptrdiff_t same_at_start_charpos
;
3915 ptrdiff_t inserted_chars
;
3918 unsigned char *decoded
;
3921 ptrdiff_t this_count
= SPECPDL_INDEX ();
3923 = ! NILP (BVAR (current_buffer
, enable_multibyte_characters
));
3924 Lisp_Object conversion_buffer
;
3925 struct gcpro gcpro1
;
3927 conversion_buffer
= code_conversion_save (1, multibyte
);
3929 /* First read the whole file, performing code conversion into
3930 CONVERSION_BUFFER. */
3932 if (lseek (fd
, beg_offset
, SEEK_SET
) < 0)
3933 report_file_error ("Setting file position",
3934 Fcons (orig_filename
, Qnil
));
3936 total
= st
.st_size
; /* Total bytes in the file. */
3937 how_much
= 0; /* Bytes read from file so far. */
3938 inserted
= 0; /* Bytes put into CONVERSION_BUFFER so far. */
3939 unprocessed
= 0; /* Bytes not processed in previous loop. */
3941 GCPRO1 (conversion_buffer
);
3942 while (how_much
< total
)
3944 /* We read one bunch by one (READ_BUF_SIZE bytes) to allow
3945 quitting while reading a huge while. */
3946 /* `try'' is reserved in some compilers (Microsoft C). */
3947 int trytry
= min (total
- how_much
, READ_BUF_SIZE
- unprocessed
);
3949 /* Allow quitting out of the actual I/O. */
3952 this = emacs_read (fd
, read_buf
+ unprocessed
, trytry
);
3960 BUF_TEMP_SET_PT (XBUFFER (conversion_buffer
),
3961 BUF_Z (XBUFFER (conversion_buffer
)));
3962 decode_coding_c_string (&coding
, (unsigned char *) read_buf
,
3963 unprocessed
+ this, conversion_buffer
);
3964 unprocessed
= coding
.carryover_bytes
;
3965 if (coding
.carryover_bytes
> 0)
3966 memcpy (read_buf
, coding
.carryover
, unprocessed
);
3971 /* We should remove the unwind_protect calling
3972 close_file_unwind, but other stuff has been added the stack,
3973 so defer the removal till we reach the `handled' label. */
3974 deferred_remove_unwind_protect
= 1;
3976 /* At this point, HOW_MUCH should equal TOTAL, or should be <= 0
3977 if we couldn't read the file. */
3980 error ("IO error reading %s: %s",
3981 SDATA (orig_filename
), emacs_strerror (errno
));
3983 if (unprocessed
> 0)
3985 coding
.mode
|= CODING_MODE_LAST_BLOCK
;
3986 decode_coding_c_string (&coding
, (unsigned char *) read_buf
,
3987 unprocessed
, conversion_buffer
);
3988 coding
.mode
&= ~CODING_MODE_LAST_BLOCK
;
3991 coding_system
= CODING_ID_NAME (coding
.id
);
3992 set_coding_system
= 1;
3993 decoded
= BUF_BEG_ADDR (XBUFFER (conversion_buffer
));
3994 inserted
= (BUF_Z_BYTE (XBUFFER (conversion_buffer
))
3995 - BUF_BEG_BYTE (XBUFFER (conversion_buffer
)));
3997 /* Compare the beginning of the converted string with the buffer
4001 while (bufpos
< inserted
&& same_at_start
< same_at_end
4002 && FETCH_BYTE (same_at_start
) == decoded
[bufpos
])
4003 same_at_start
++, bufpos
++;
4005 /* If the file matches the head of buffer completely,
4006 there's no need to replace anything. */
4008 if (bufpos
== inserted
)
4010 /* Truncate the buffer to the size of the file. */
4011 if (same_at_start
== same_at_end
)
4014 del_range_byte (same_at_start
, same_at_end
, 0);
4017 unbind_to (this_count
, Qnil
);
4021 /* Extend the start of non-matching text area to the previous
4022 multibyte character boundary. */
4023 if (! NILP (BVAR (current_buffer
, enable_multibyte_characters
)))
4024 while (same_at_start
> BEGV_BYTE
4025 && ! CHAR_HEAD_P (FETCH_BYTE (same_at_start
)))
4028 /* Scan this bufferful from the end, comparing with
4029 the Emacs buffer. */
4032 /* Compare with same_at_start to avoid counting some buffer text
4033 as matching both at the file's beginning and at the end. */
4034 while (bufpos
> 0 && same_at_end
> same_at_start
4035 && FETCH_BYTE (same_at_end
- 1) == decoded
[bufpos
- 1])
4036 same_at_end
--, bufpos
--;
4038 /* Extend the end of non-matching text area to the next
4039 multibyte character boundary. */
4040 if (! NILP (BVAR (current_buffer
, enable_multibyte_characters
)))
4041 while (same_at_end
< ZV_BYTE
4042 && ! CHAR_HEAD_P (FETCH_BYTE (same_at_end
)))
4045 /* Don't try to reuse the same piece of text twice. */
4046 overlap
= same_at_start
- BEGV_BYTE
- (same_at_end
+ inserted
- ZV_BYTE
);
4048 same_at_end
+= overlap
;
4050 /* If display currently starts at beginning of line,
4051 keep it that way. */
4052 if (XBUFFER (XWINDOW (selected_window
)->buffer
) == current_buffer
)
4053 XWINDOW (selected_window
)->start_at_line_beg
= !NILP (Fbolp ());
4055 /* Replace the chars that we need to replace,
4056 and update INSERTED to equal the number of bytes
4057 we are taking from the decoded string. */
4058 inserted
-= (ZV_BYTE
- same_at_end
) + (same_at_start
- BEGV_BYTE
);
4060 if (same_at_end
!= same_at_start
)
4062 del_range_byte (same_at_start
, same_at_end
, 0);
4064 same_at_start
= GPT_BYTE
;
4068 temp
= BYTE_TO_CHAR (same_at_start
);
4070 /* Insert from the file at the proper position. */
4071 SET_PT_BOTH (temp
, same_at_start
);
4072 same_at_start_charpos
4073 = buf_bytepos_to_charpos (XBUFFER (conversion_buffer
),
4074 same_at_start
- BEGV_BYTE
4075 + BUF_BEG_BYTE (XBUFFER (conversion_buffer
)));
4077 = (buf_bytepos_to_charpos (XBUFFER (conversion_buffer
),
4078 same_at_start
+ inserted
- BEGV_BYTE
4079 + BUF_BEG_BYTE (XBUFFER (conversion_buffer
)))
4080 - same_at_start_charpos
);
4081 /* This binding is to avoid ask-user-about-supersession-threat
4082 being called in insert_from_buffer (via in
4083 prepare_to_modify_buffer). */
4084 specbind (intern ("buffer-file-name"), Qnil
);
4085 insert_from_buffer (XBUFFER (conversion_buffer
),
4086 same_at_start_charpos
, inserted_chars
, 0);
4087 /* Set `inserted' to the number of inserted characters. */
4088 inserted
= PT
- temp
;
4089 /* Set point before the inserted characters. */
4090 SET_PT_BOTH (temp
, same_at_start
);
4092 unbind_to (this_count
, Qnil
);
4098 total
= end_offset
- beg_offset
;
4100 /* For a special file, all we can do is guess. */
4101 total
= READ_BUF_SIZE
;
4103 if (NILP (visit
) && total
> 0)
4105 #ifdef CLASH_DETECTION
4106 if (!NILP (BVAR (current_buffer
, file_truename
))
4107 /* Make binding buffer-file-name to nil effective. */
4108 && !NILP (BVAR (current_buffer
, filename
))
4109 && SAVE_MODIFF
>= MODIFF
)
4111 #endif /* CLASH_DETECTION */
4112 prepare_to_modify_buffer (GPT
, GPT
, NULL
);
4116 if (GAP_SIZE
< total
)
4117 make_gap (total
- GAP_SIZE
);
4119 if (beg_offset
!= 0 || !NILP (replace
))
4121 if (lseek (fd
, beg_offset
, SEEK_SET
) < 0)
4122 report_file_error ("Setting file position",
4123 Fcons (orig_filename
, Qnil
));
4126 /* In the following loop, HOW_MUCH contains the total bytes read so
4127 far for a regular file, and not changed for a special file. But,
4128 before exiting the loop, it is set to a negative value if I/O
4132 /* Total bytes inserted. */
4135 /* Here, we don't do code conversion in the loop. It is done by
4136 decode_coding_gap after all data are read into the buffer. */
4138 ptrdiff_t gap_size
= GAP_SIZE
;
4140 while (how_much
< total
)
4142 /* try is reserved in some compilers (Microsoft C) */
4143 int trytry
= min (total
- how_much
, READ_BUF_SIZE
);
4150 /* Maybe make more room. */
4151 if (gap_size
< trytry
)
4153 make_gap (total
- gap_size
);
4154 gap_size
= GAP_SIZE
;
4157 /* Read from the file, capturing `quit'. When an
4158 error occurs, end the loop, and arrange for a quit
4159 to be signaled after decoding the text we read. */
4160 non_regular_fd
= fd
;
4161 non_regular_inserted
= inserted
;
4162 non_regular_nbytes
= trytry
;
4163 nbytes
= internal_condition_case_1 (read_non_regular
,
4165 read_non_regular_quit
);
4172 this = XINT (nbytes
);
4176 /* Allow quitting out of the actual I/O. We don't make text
4177 part of the buffer until all the reading is done, so a C-g
4178 here doesn't do any harm. */
4181 this = emacs_read (fd
,
4182 ((char *) BEG_ADDR
+ PT_BYTE
- BEG_BYTE
4196 /* For a regular file, where TOTAL is the real size,
4197 count HOW_MUCH to compare with it.
4198 For a special file, where TOTAL is just a buffer size,
4199 so don't bother counting in HOW_MUCH.
4200 (INSERTED is where we count the number of characters inserted.) */
4207 /* Now we have read all the file data into the gap.
4208 If it was empty, undo marking the buffer modified. */
4212 #ifdef CLASH_DETECTION
4214 unlock_file (BVAR (current_buffer
, file_truename
));
4216 Vdeactivate_mark
= old_Vdeactivate_mark
;
4219 Vdeactivate_mark
= Qt
;
4221 /* Make the text read part of the buffer. */
4222 GAP_SIZE
-= inserted
;
4224 GPT_BYTE
+= inserted
;
4226 ZV_BYTE
+= inserted
;
4231 /* Put an anchor to ensure multi-byte form ends at gap. */
4236 /* Discard the unwind protect for closing the file. */
4240 error ("IO error reading %s: %s",
4241 SDATA (orig_filename
), emacs_strerror (errno
));
4245 if (NILP (coding_system
))
4247 /* The coding system is not yet decided. Decide it by an
4248 optimized method for handling `coding:' tag.
4250 Note that we can get here only if the buffer was empty
4251 before the insertion. */
4253 if (!NILP (Vcoding_system_for_read
))
4254 coding_system
= Vcoding_system_for_read
;
4257 /* Since we are sure that the current buffer was empty
4258 before the insertion, we can toggle
4259 enable-multibyte-characters directly here without taking
4260 care of marker adjustment. By this way, we can run Lisp
4261 program safely before decoding the inserted text. */
4262 Lisp_Object unwind_data
;
4263 ptrdiff_t count1
= SPECPDL_INDEX ();
4265 unwind_data
= Fcons (BVAR (current_buffer
, enable_multibyte_characters
),
4266 Fcons (BVAR (current_buffer
, undo_list
),
4267 Fcurrent_buffer ()));
4268 bset_enable_multibyte_characters (current_buffer
, Qnil
);
4269 bset_undo_list (current_buffer
, Qt
);
4270 record_unwind_protect (decide_coding_unwind
, unwind_data
);
4272 if (inserted
> 0 && ! NILP (Vset_auto_coding_function
))
4274 coding_system
= call2 (Vset_auto_coding_function
,
4275 filename
, make_number (inserted
));
4278 if (NILP (coding_system
))
4280 /* If the coding system is not yet decided, check
4281 file-coding-system-alist. */
4282 Lisp_Object args
[6];
4284 args
[0] = Qinsert_file_contents
, args
[1] = orig_filename
;
4285 args
[2] = visit
, args
[3] = beg
, args
[4] = end
, args
[5] = Qnil
;
4286 coding_system
= Ffind_operation_coding_system (6, args
);
4287 if (CONSP (coding_system
))
4288 coding_system
= XCAR (coding_system
);
4290 unbind_to (count1
, Qnil
);
4291 inserted
= Z_BYTE
- BEG_BYTE
;
4294 if (NILP (coding_system
))
4295 coding_system
= Qundecided
;
4297 CHECK_CODING_SYSTEM (coding_system
);
4299 if (NILP (BVAR (current_buffer
, enable_multibyte_characters
)))
4300 /* We must suppress all character code conversion except for
4301 end-of-line conversion. */
4302 coding_system
= raw_text_coding_system (coding_system
);
4303 setup_coding_system (coding_system
, &coding
);
4304 /* Ensure we set Vlast_coding_system_used. */
4305 set_coding_system
= 1;
4310 /* When we visit a file by raw-text, we change the buffer to
4312 if (CODING_FOR_UNIBYTE (&coding
)
4313 /* Can't do this if part of the buffer might be preserved. */
4315 /* Visiting a file with these coding system makes the buffer
4317 bset_enable_multibyte_characters (current_buffer
, Qnil
);
4320 coding
.dst_multibyte
= ! NILP (BVAR (current_buffer
, enable_multibyte_characters
));
4321 if (CODING_MAY_REQUIRE_DECODING (&coding
)
4322 && (inserted
> 0 || CODING_REQUIRE_FLUSHING (&coding
)))
4324 move_gap_both (PT
, PT_BYTE
);
4325 GAP_SIZE
+= inserted
;
4326 ZV_BYTE
-= inserted
;
4330 decode_coding_gap (&coding
, inserted
, inserted
);
4331 inserted
= coding
.produced_char
;
4332 coding_system
= CODING_ID_NAME (coding
.id
);
4334 else if (inserted
> 0)
4335 adjust_after_insert (PT
, PT_BYTE
, PT
+ inserted
, PT_BYTE
+ inserted
,
4338 /* Call after-change hooks for the inserted text, aside from the case
4339 of normal visiting (not with REPLACE), which is done in a new buffer
4340 "before" the buffer is changed. */
4341 if (inserted
> 0 && total
> 0
4342 && (NILP (visit
) || !NILP (replace
)))
4344 signal_after_change (PT
, 0, inserted
);
4345 update_compositions (PT
, PT
, CHECK_BORDER
);
4348 /* Now INSERTED is measured in characters. */
4352 if (deferred_remove_unwind_protect
)
4353 /* If requested above, discard the unwind protect for closing the
4359 if (!EQ (BVAR (current_buffer
, undo_list
), Qt
) && !nochange
)
4360 bset_undo_list (current_buffer
, Qnil
);
4364 current_buffer
->modtime
= mtime
;
4365 current_buffer
->modtime_size
= st
.st_size
;
4366 bset_filename (current_buffer
, orig_filename
);
4369 SAVE_MODIFF
= MODIFF
;
4370 BUF_AUTOSAVE_MODIFF (current_buffer
) = MODIFF
;
4371 XSETFASTINT (BVAR (current_buffer
, save_length
), Z
- BEG
);
4372 #ifdef CLASH_DETECTION
4375 if (!NILP (BVAR (current_buffer
, file_truename
)))
4376 unlock_file (BVAR (current_buffer
, file_truename
));
4377 unlock_file (filename
);
4379 #endif /* CLASH_DETECTION */
4381 xsignal2 (Qfile_error
,
4382 build_string ("not a regular file"), orig_filename
);
4385 if (set_coding_system
)
4386 Vlast_coding_system_used
= coding_system
;
4388 if (! NILP (Ffboundp (Qafter_insert_file_set_coding
)))
4390 insval
= call2 (Qafter_insert_file_set_coding
, make_number (inserted
),
4392 if (! NILP (insval
))
4394 if (! RANGED_INTEGERP (0, insval
, ZV
- PT
))
4395 wrong_type_argument (intern ("inserted-chars"), insval
);
4396 inserted
= XFASTINT (insval
);
4400 /* Decode file format. */
4403 /* Don't run point motion or modification hooks when decoding. */
4404 ptrdiff_t count1
= SPECPDL_INDEX ();
4405 ptrdiff_t old_inserted
= inserted
;
4406 specbind (Qinhibit_point_motion_hooks
, Qt
);
4407 specbind (Qinhibit_modification_hooks
, Qt
);
4409 /* Save old undo list and don't record undo for decoding. */
4410 old_undo
= BVAR (current_buffer
, undo_list
);
4411 bset_undo_list (current_buffer
, Qt
);
4415 insval
= call3 (Qformat_decode
,
4416 Qnil
, make_number (inserted
), visit
);
4417 if (! RANGED_INTEGERP (0, insval
, ZV
- PT
))
4418 wrong_type_argument (intern ("inserted-chars"), insval
);
4419 inserted
= XFASTINT (insval
);
4423 /* If REPLACE is non-nil and we succeeded in not replacing the
4424 beginning or end of the buffer text with the file's contents,
4425 call format-decode with `point' positioned at the beginning
4426 of the buffer and `inserted' equaling the number of
4427 characters in the buffer. Otherwise, format-decode might
4428 fail to correctly analyze the beginning or end of the buffer.
4429 Hence we temporarily save `point' and `inserted' here and
4430 restore `point' iff format-decode did not insert or delete
4431 any text. Otherwise we leave `point' at point-min. */
4432 ptrdiff_t opoint
= PT
;
4433 ptrdiff_t opoint_byte
= PT_BYTE
;
4434 ptrdiff_t oinserted
= ZV
- BEGV
;
4435 EMACS_INT ochars_modiff
= CHARS_MODIFF
;
4437 TEMP_SET_PT_BOTH (BEGV
, BEGV_BYTE
);
4438 insval
= call3 (Qformat_decode
,
4439 Qnil
, make_number (oinserted
), visit
);
4440 if (! RANGED_INTEGERP (0, insval
, ZV
- PT
))
4441 wrong_type_argument (intern ("inserted-chars"), insval
);
4442 if (ochars_modiff
== CHARS_MODIFF
)
4443 /* format_decode didn't modify buffer's characters => move
4444 point back to position before inserted text and leave
4445 value of inserted alone. */
4446 SET_PT_BOTH (opoint
, opoint_byte
);
4448 /* format_decode modified buffer's characters => consider
4449 entire buffer changed and leave point at point-min. */
4450 inserted
= XFASTINT (insval
);
4453 /* For consistency with format-decode call these now iff inserted > 0
4454 (martin 2007-06-28). */
4455 p
= Vafter_insert_file_functions
;
4460 insval
= call1 (XCAR (p
), make_number (inserted
));
4463 if (! RANGED_INTEGERP (0, insval
, ZV
- PT
))
4464 wrong_type_argument (intern ("inserted-chars"), insval
);
4465 inserted
= XFASTINT (insval
);
4470 /* For the rationale of this see the comment on
4471 format-decode above. */
4472 ptrdiff_t opoint
= PT
;
4473 ptrdiff_t opoint_byte
= PT_BYTE
;
4474 ptrdiff_t oinserted
= ZV
- BEGV
;
4475 EMACS_INT ochars_modiff
= CHARS_MODIFF
;
4477 TEMP_SET_PT_BOTH (BEGV
, BEGV_BYTE
);
4478 insval
= call1 (XCAR (p
), make_number (oinserted
));
4481 if (! RANGED_INTEGERP (0, insval
, ZV
- PT
))
4482 wrong_type_argument (intern ("inserted-chars"), insval
);
4483 if (ochars_modiff
== CHARS_MODIFF
)
4484 /* after_insert_file_functions didn't modify
4485 buffer's characters => move point back to
4486 position before inserted text and leave value of
4488 SET_PT_BOTH (opoint
, opoint_byte
);
4490 /* after_insert_file_functions did modify buffer's
4491 characters => consider entire buffer changed and
4492 leave point at point-min. */
4493 inserted
= XFASTINT (insval
);
4503 bset_undo_list (current_buffer
, old_undo
);
4504 if (CONSP (old_undo
) && inserted
!= old_inserted
)
4506 /* Adjust the last undo record for the size change during
4507 the format conversion. */
4508 Lisp_Object tem
= XCAR (old_undo
);
4509 if (CONSP (tem
) && INTEGERP (XCAR (tem
))
4510 && INTEGERP (XCDR (tem
))
4511 && XFASTINT (XCDR (tem
)) == PT
+ old_inserted
)
4512 XSETCDR (tem
, make_number (PT
+ inserted
));
4516 /* If undo_list was Qt before, keep it that way.
4517 Otherwise start with an empty undo_list. */
4518 bset_undo_list (current_buffer
, EQ (old_undo
, Qt
) ? Qt
: Qnil
);
4520 unbind_to (count1
, Qnil
);
4524 && EMACS_NSECS (current_buffer
->modtime
) == NONEXISTENT_MODTIME_NSECS
)
4526 /* If visiting nonexistent file, return nil. */
4528 report_file_error ("Opening input file", Fcons (orig_filename
, Qnil
));
4532 Fsignal (Qquit
, Qnil
);
4534 /* ??? Retval needs to be dealt with in all cases consistently. */
4536 val
= Fcons (orig_filename
,
4537 Fcons (make_number (inserted
),
4540 RETURN_UNGCPRO (unbind_to (count
, val
));
4543 static Lisp_Object
build_annotations (Lisp_Object
, Lisp_Object
);
4546 build_annotations_unwind (Lisp_Object arg
)
4548 Vwrite_region_annotation_buffers
= arg
;
4552 /* Decide the coding-system to encode the data with. */
4555 choose_write_coding_system (Lisp_Object start
, Lisp_Object end
, Lisp_Object filename
,
4556 Lisp_Object append
, Lisp_Object visit
, Lisp_Object lockname
,
4557 struct coding_system
*coding
)
4560 Lisp_Object eol_parent
= Qnil
;
4563 && NILP (Fstring_equal (BVAR (current_buffer
, filename
),
4564 BVAR (current_buffer
, auto_save_file_name
))))
4569 else if (!NILP (Vcoding_system_for_write
))
4571 val
= Vcoding_system_for_write
;
4572 if (coding_system_require_warning
4573 && !NILP (Ffboundp (Vselect_safe_coding_system_function
)))
4574 /* Confirm that VAL can surely encode the current region. */
4575 val
= call5 (Vselect_safe_coding_system_function
,
4576 start
, end
, Fcons (Qt
, Fcons (val
, Qnil
)),
4581 /* If the variable `buffer-file-coding-system' is set locally,
4582 it means that the file was read with some kind of code
4583 conversion or the variable is explicitly set by users. We
4584 had better write it out with the same coding system even if
4585 `enable-multibyte-characters' is nil.
4587 If it is not set locally, we anyway have to convert EOL
4588 format if the default value of `buffer-file-coding-system'
4589 tells that it is not Unix-like (LF only) format. */
4590 bool using_default_coding
= 0;
4591 bool force_raw_text
= 0;
4593 val
= BVAR (current_buffer
, buffer_file_coding_system
);
4595 || NILP (Flocal_variable_p (Qbuffer_file_coding_system
, Qnil
)))
4598 if (NILP (BVAR (current_buffer
, enable_multibyte_characters
)))
4604 /* Check file-coding-system-alist. */
4605 Lisp_Object args
[7], coding_systems
;
4607 args
[0] = Qwrite_region
; args
[1] = start
; args
[2] = end
;
4608 args
[3] = filename
; args
[4] = append
; args
[5] = visit
;
4610 coding_systems
= Ffind_operation_coding_system (7, args
);
4611 if (CONSP (coding_systems
) && !NILP (XCDR (coding_systems
)))
4612 val
= XCDR (coding_systems
);
4617 /* If we still have not decided a coding system, use the
4618 default value of buffer-file-coding-system. */
4619 val
= BVAR (current_buffer
, buffer_file_coding_system
);
4620 using_default_coding
= 1;
4623 if (! NILP (val
) && ! force_raw_text
)
4625 Lisp_Object spec
, attrs
;
4627 CHECK_CODING_SYSTEM_GET_SPEC (val
, spec
);
4628 attrs
= AREF (spec
, 0);
4629 if (EQ (CODING_ATTR_TYPE (attrs
), Qraw_text
))
4634 && !NILP (Ffboundp (Vselect_safe_coding_system_function
)))
4635 /* Confirm that VAL can surely encode the current region. */
4636 val
= call5 (Vselect_safe_coding_system_function
,
4637 start
, end
, val
, Qnil
, filename
);
4639 /* If the decided coding-system doesn't specify end-of-line
4640 format, we use that of
4641 `default-buffer-file-coding-system'. */
4642 if (! using_default_coding
4643 && ! NILP (BVAR (&buffer_defaults
, buffer_file_coding_system
)))
4644 val
= (coding_inherit_eol_type
4645 (val
, BVAR (&buffer_defaults
, buffer_file_coding_system
)));
4647 /* If we decide not to encode text, use `raw-text' or one of its
4650 val
= raw_text_coding_system (val
);
4653 val
= coding_inherit_eol_type (val
, eol_parent
);
4654 setup_coding_system (val
, coding
);
4656 if (!STRINGP (start
) && !NILP (BVAR (current_buffer
, selective_display
)))
4657 coding
->mode
|= CODING_MODE_SELECTIVE_DISPLAY
;
4661 DEFUN ("write-region", Fwrite_region
, Swrite_region
, 3, 7,
4662 "r\nFWrite region to file: \ni\ni\ni\np",
4663 doc
: /* Write current region into specified file.
4664 When called from a program, requires three arguments:
4665 START, END and FILENAME. START and END are normally buffer positions
4666 specifying the part of the buffer to write.
4667 If START is nil, that means to use the entire buffer contents.
4668 If START is a string, then output that string to the file
4669 instead of any buffer contents; END is ignored.
4671 Optional fourth argument APPEND if non-nil means
4672 append to existing file contents (if any). If it is an integer,
4673 seek to that offset in the file before writing.
4674 Optional fifth argument VISIT, if t or a string, means
4675 set the last-save-file-modtime of buffer to this file's modtime
4676 and mark buffer not modified.
4677 If VISIT is a string, it is a second file name;
4678 the output goes to FILENAME, but the buffer is marked as visiting VISIT.
4679 VISIT is also the file name to lock and unlock for clash detection.
4680 If VISIT is neither t nor nil nor a string,
4681 that means do not display the \"Wrote file\" message.
4682 The optional sixth arg LOCKNAME, if non-nil, specifies the name to
4683 use for locking and unlocking, overriding FILENAME and VISIT.
4684 The optional seventh arg MUSTBENEW, if non-nil, insists on a check
4685 for an existing file with the same name. If MUSTBENEW is `excl',
4686 that means to get an error if the file already exists; never overwrite.
4687 If MUSTBENEW is neither nil nor `excl', that means ask for
4688 confirmation before overwriting, but do go ahead and overwrite the file
4689 if the user confirms.
4691 This does code conversion according to the value of
4692 `coding-system-for-write', `buffer-file-coding-system', or
4693 `file-coding-system-alist', and sets the variable
4694 `last-coding-system-used' to the coding system actually used.
4696 This calls `write-region-annotate-functions' at the start, and
4697 `write-region-post-annotation-function' at the end. */)
4698 (Lisp_Object start
, Lisp_Object end
, Lisp_Object filename
, Lisp_Object append
, Lisp_Object visit
, Lisp_Object lockname
, Lisp_Object mustbenew
)
4706 ptrdiff_t count
= SPECPDL_INDEX ();
4708 Lisp_Object handler
;
4709 Lisp_Object visit_file
;
4710 Lisp_Object annotations
;
4711 Lisp_Object encoded_filename
;
4712 bool visiting
= (EQ (visit
, Qt
) || STRINGP (visit
));
4713 bool quietly
= !NILP (visit
);
4714 struct gcpro gcpro1
, gcpro2
, gcpro3
, gcpro4
, gcpro5
;
4715 struct buffer
*given_buffer
;
4716 struct coding_system coding
;
4718 if (current_buffer
->base_buffer
&& visiting
)
4719 error ("Cannot do file visiting in an indirect buffer");
4721 if (!NILP (start
) && !STRINGP (start
))
4722 validate_region (&start
, &end
);
4725 GCPRO5 (start
, filename
, visit
, visit_file
, lockname
);
4727 filename
= Fexpand_file_name (filename
, Qnil
);
4729 if (!NILP (mustbenew
) && !EQ (mustbenew
, Qexcl
))
4730 barf_or_query_if_file_exists (filename
, "overwrite", 1, 0, 1);
4732 if (STRINGP (visit
))
4733 visit_file
= Fexpand_file_name (visit
, Qnil
);
4735 visit_file
= filename
;
4737 if (NILP (lockname
))
4738 lockname
= visit_file
;
4742 /* If the file name has special constructs in it,
4743 call the corresponding file handler. */
4744 handler
= Ffind_file_name_handler (filename
, Qwrite_region
);
4745 /* If FILENAME has no handler, see if VISIT has one. */
4746 if (NILP (handler
) && STRINGP (visit
))
4747 handler
= Ffind_file_name_handler (visit
, Qwrite_region
);
4749 if (!NILP (handler
))
4752 val
= call6 (handler
, Qwrite_region
, start
, end
,
4753 filename
, append
, visit
);
4757 SAVE_MODIFF
= MODIFF
;
4758 XSETFASTINT (BVAR (current_buffer
, save_length
), Z
- BEG
);
4759 bset_filename (current_buffer
, visit_file
);
4765 record_unwind_protect (save_restriction_restore
, save_restriction_save ());
4767 /* Special kludge to simplify auto-saving. */
4770 /* Do it later, so write-region-annotate-function can work differently
4771 if we save "the buffer" vs "a region".
4772 This is useful in tar-mode. --Stef
4773 XSETFASTINT (start, BEG);
4774 XSETFASTINT (end, Z); */
4778 record_unwind_protect (build_annotations_unwind
,
4779 Vwrite_region_annotation_buffers
);
4780 Vwrite_region_annotation_buffers
= Fcons (Fcurrent_buffer (), Qnil
);
4781 count1
= SPECPDL_INDEX ();
4783 given_buffer
= current_buffer
;
4785 if (!STRINGP (start
))
4787 annotations
= build_annotations (start
, end
);
4789 if (current_buffer
!= given_buffer
)
4791 XSETFASTINT (start
, BEGV
);
4792 XSETFASTINT (end
, ZV
);
4798 XSETFASTINT (start
, BEGV
);
4799 XSETFASTINT (end
, ZV
);
4804 GCPRO5 (start
, filename
, annotations
, visit_file
, lockname
);
4806 /* Decide the coding-system to encode the data with.
4807 We used to make this choice before calling build_annotations, but that
4808 leads to problems when a write-annotate-function takes care of
4809 unsavable chars (as was the case with X-Symbol). */
4810 Vlast_coding_system_used
4811 = choose_write_coding_system (start
, end
, filename
,
4812 append
, visit
, lockname
, &coding
);
4814 #ifdef CLASH_DETECTION
4816 lock_file (lockname
);
4817 #endif /* CLASH_DETECTION */
4819 encoded_filename
= ENCODE_FILE (filename
);
4821 fn
= SSDATA (encoded_filename
);
4825 desc
= emacs_open (fn
, O_WRONLY
| O_BINARY
, 0);
4826 #else /* not DOS_NT */
4827 desc
= emacs_open (fn
, O_WRONLY
, 0);
4828 #endif /* not DOS_NT */
4830 if (desc
< 0 && (NILP (append
) || errno
== ENOENT
))
4832 desc
= emacs_open (fn
,
4833 O_WRONLY
| O_CREAT
| O_BINARY
4834 | (EQ (mustbenew
, Qexcl
) ? O_EXCL
: O_TRUNC
),
4835 S_IREAD
| S_IWRITE
);
4836 #else /* not DOS_NT */
4837 desc
= emacs_open (fn
, O_WRONLY
| O_TRUNC
| O_CREAT
4838 | (EQ (mustbenew
, Qexcl
) ? O_EXCL
: 0),
4839 auto_saving
? auto_save_mode_bits
: 0666);
4840 #endif /* not DOS_NT */
4844 #ifdef CLASH_DETECTION
4846 if (!auto_saving
) unlock_file (lockname
);
4848 #endif /* CLASH_DETECTION */
4850 report_file_error ("Opening output file", Fcons (filename
, Qnil
));
4853 record_unwind_protect (close_file_unwind
, make_number (desc
));
4855 if (!NILP (append
) && !NILP (Ffile_regular_p (filename
)))
4859 if (NUMBERP (append
))
4860 ret
= emacs_lseek (desc
, XINT (append
), SEEK_CUR
);
4862 ret
= lseek (desc
, 0, SEEK_END
);
4865 #ifdef CLASH_DETECTION
4867 if (!auto_saving
) unlock_file (lockname
);
4869 #endif /* CLASH_DETECTION */
4871 report_file_error ("Lseek error", Fcons (filename
, Qnil
));
4879 if (STRINGP (start
))
4880 ok
= a_write (desc
, start
, 0, SCHARS (start
), &annotations
, &coding
);
4881 else if (XINT (start
) != XINT (end
))
4882 ok
= a_write (desc
, Qnil
, XINT (start
), XINT (end
) - XINT (start
),
4883 &annotations
, &coding
);
4886 /* If file was empty, still need to write the annotations. */
4887 coding
.mode
|= CODING_MODE_LAST_BLOCK
;
4888 ok
= a_write (desc
, Qnil
, XINT (end
), 0, &annotations
, &coding
);
4892 if (ok
&& CODING_REQUIRE_FLUSHING (&coding
)
4893 && !(coding
.mode
& CODING_MODE_LAST_BLOCK
))
4895 /* We have to flush out a data. */
4896 coding
.mode
|= CODING_MODE_LAST_BLOCK
;
4897 ok
= e_write (desc
, Qnil
, 1, 1, &coding
);
4904 /* Note fsync appears to change the modtime on BSD4.2 (both vax and sun).
4905 Disk full in NFS may be reported here. */
4906 /* mib says that closing the file will try to write as fast as NFS can do
4907 it, and that means the fsync here is not crucial for autosave files. */
4908 if (!auto_saving
&& !write_region_inhibit_fsync
&& fsync (desc
) < 0)
4910 /* If fsync fails with EINTR, don't treat that as serious. Also
4911 ignore EINVAL which happens when fsync is not supported on this
4913 if (errno
!= EINTR
&& errno
!= EINVAL
)
4914 ok
= 0, save_errno
= errno
;
4918 modtime
= invalid_emacs_time ();
4921 if (fstat (desc
, &st
) == 0)
4922 modtime
= get_stat_mtime (&st
);
4924 ok
= 0, save_errno
= errno
;
4927 /* NFS can report a write failure now. */
4928 if (emacs_close (desc
) < 0)
4929 ok
= 0, save_errno
= errno
;
4931 /* Discard the unwind protect for close_file_unwind. */
4932 specpdl_ptr
= specpdl
+ count1
;
4934 /* Call write-region-post-annotation-function. */
4935 while (CONSP (Vwrite_region_annotation_buffers
))
4937 Lisp_Object buf
= XCAR (Vwrite_region_annotation_buffers
);
4938 if (!NILP (Fbuffer_live_p (buf
)))
4941 if (FUNCTIONP (Vwrite_region_post_annotation_function
))
4942 call0 (Vwrite_region_post_annotation_function
);
4944 Vwrite_region_annotation_buffers
4945 = XCDR (Vwrite_region_annotation_buffers
);
4948 unbind_to (count
, Qnil
);
4950 #ifdef CLASH_DETECTION
4952 unlock_file (lockname
);
4953 #endif /* CLASH_DETECTION */
4955 /* Do this before reporting IO error
4956 to avoid a "file has changed on disk" warning on
4957 next attempt to save. */
4958 if (EMACS_TIME_VALID_P (modtime
))
4960 current_buffer
->modtime
= modtime
;
4961 current_buffer
->modtime_size
= st
.st_size
;
4965 error ("IO error writing %s: %s", SDATA (filename
),
4966 emacs_strerror (save_errno
));
4970 SAVE_MODIFF
= MODIFF
;
4971 XSETFASTINT (BVAR (current_buffer
, save_length
), Z
- BEG
);
4972 bset_filename (current_buffer
, visit_file
);
4973 update_mode_lines
++;
4978 && ! NILP (Fstring_equal (BVAR (current_buffer
, filename
),
4979 BVAR (current_buffer
, auto_save_file_name
))))
4980 SAVE_MODIFF
= MODIFF
;
4986 message_with_string ((INTEGERP (append
)
4996 Lisp_Object
merge (Lisp_Object
, Lisp_Object
, Lisp_Object
);
4998 DEFUN ("car-less-than-car", Fcar_less_than_car
, Scar_less_than_car
, 2, 2, 0,
4999 doc
: /* Return t if (car A) is numerically less than (car B). */)
5000 (Lisp_Object a
, Lisp_Object b
)
5002 return Flss (Fcar (a
), Fcar (b
));
5005 /* Build the complete list of annotations appropriate for writing out
5006 the text between START and END, by calling all the functions in
5007 write-region-annotate-functions and merging the lists they return.
5008 If one of these functions switches to a different buffer, we assume
5009 that buffer contains altered text. Therefore, the caller must
5010 make sure to restore the current buffer in all cases,
5011 as save-excursion would do. */
5014 build_annotations (Lisp_Object start
, Lisp_Object end
)
5016 Lisp_Object annotations
;
5018 struct gcpro gcpro1
, gcpro2
;
5019 Lisp_Object original_buffer
;
5021 bool used_global
= 0;
5023 XSETBUFFER (original_buffer
, current_buffer
);
5026 p
= Vwrite_region_annotate_functions
;
5027 GCPRO2 (annotations
, p
);
5030 struct buffer
*given_buffer
= current_buffer
;
5031 if (EQ (Qt
, XCAR (p
)) && !used_global
)
5032 { /* Use the global value of the hook. */
5035 arg
[0] = Fdefault_value (Qwrite_region_annotate_functions
);
5037 p
= Fappend (2, arg
);
5040 Vwrite_region_annotations_so_far
= annotations
;
5041 res
= call2 (XCAR (p
), start
, end
);
5042 /* If the function makes a different buffer current,
5043 assume that means this buffer contains altered text to be output.
5044 Reset START and END from the buffer bounds
5045 and discard all previous annotations because they should have
5046 been dealt with by this function. */
5047 if (current_buffer
!= given_buffer
)
5049 Vwrite_region_annotation_buffers
5050 = Fcons (Fcurrent_buffer (),
5051 Vwrite_region_annotation_buffers
);
5052 XSETFASTINT (start
, BEGV
);
5053 XSETFASTINT (end
, ZV
);
5056 Flength (res
); /* Check basic validity of return value */
5057 annotations
= merge (annotations
, res
, Qcar_less_than_car
);
5061 /* Now do the same for annotation functions implied by the file-format */
5062 if (auto_saving
&& (!EQ (BVAR (current_buffer
, auto_save_file_format
), Qt
)))
5063 p
= BVAR (current_buffer
, auto_save_file_format
);
5065 p
= BVAR (current_buffer
, file_format
);
5066 for (i
= 0; CONSP (p
); p
= XCDR (p
), ++i
)
5068 struct buffer
*given_buffer
= current_buffer
;
5070 Vwrite_region_annotations_so_far
= annotations
;
5072 /* Value is either a list of annotations or nil if the function
5073 has written annotations to a temporary buffer, which is now
5075 res
= call5 (Qformat_annotate_function
, XCAR (p
), start
, end
,
5076 original_buffer
, make_number (i
));
5077 if (current_buffer
!= given_buffer
)
5079 XSETFASTINT (start
, BEGV
);
5080 XSETFASTINT (end
, ZV
);
5085 annotations
= merge (annotations
, res
, Qcar_less_than_car
);
5093 /* Write to descriptor DESC the NCHARS chars starting at POS of STRING.
5094 If STRING is nil, POS is the character position in the current buffer.
5095 Intersperse with them the annotations from *ANNOT
5096 which fall within the range of POS to POS + NCHARS,
5097 each at its appropriate position.
5099 We modify *ANNOT by discarding elements as we use them up.
5101 Return true if successful. */
5104 a_write (int desc
, Lisp_Object string
, ptrdiff_t pos
,
5105 ptrdiff_t nchars
, Lisp_Object
*annot
,
5106 struct coding_system
*coding
)
5110 ptrdiff_t lastpos
= pos
+ nchars
;
5112 while (NILP (*annot
) || CONSP (*annot
))
5114 tem
= Fcar_safe (Fcar (*annot
));
5117 nextpos
= XFASTINT (tem
);
5119 /* If there are no more annotations in this range,
5120 output the rest of the range all at once. */
5121 if (! (nextpos
>= pos
&& nextpos
<= lastpos
))
5122 return e_write (desc
, string
, pos
, lastpos
, coding
);
5124 /* Output buffer text up to the next annotation's position. */
5127 if (!e_write (desc
, string
, pos
, nextpos
, coding
))
5131 /* Output the annotation. */
5132 tem
= Fcdr (Fcar (*annot
));
5135 if (!e_write (desc
, tem
, 0, SCHARS (tem
), coding
))
5138 *annot
= Fcdr (*annot
);
5144 /* Write text in the range START and END into descriptor DESC,
5145 encoding them with coding system CODING. If STRING is nil, START
5146 and END are character positions of the current buffer, else they
5147 are indexes to the string STRING. Return true if successful. */
5150 e_write (int desc
, Lisp_Object string
, ptrdiff_t start
, ptrdiff_t end
,
5151 struct coding_system
*coding
)
5153 if (STRINGP (string
))
5156 end
= SCHARS (string
);
5159 /* We used to have a code for handling selective display here. But,
5160 now it is handled within encode_coding. */
5164 if (STRINGP (string
))
5166 coding
->src_multibyte
= SCHARS (string
) < SBYTES (string
);
5167 if (CODING_REQUIRE_ENCODING (coding
))
5169 encode_coding_object (coding
, string
,
5170 start
, string_char_to_byte (string
, start
),
5171 end
, string_char_to_byte (string
, end
), Qt
);
5175 coding
->dst_object
= string
;
5176 coding
->consumed_char
= SCHARS (string
);
5177 coding
->produced
= SBYTES (string
);
5182 ptrdiff_t start_byte
= CHAR_TO_BYTE (start
);
5183 ptrdiff_t end_byte
= CHAR_TO_BYTE (end
);
5185 coding
->src_multibyte
= (end
- start
) < (end_byte
- start_byte
);
5186 if (CODING_REQUIRE_ENCODING (coding
))
5188 encode_coding_object (coding
, Fcurrent_buffer (),
5189 start
, start_byte
, end
, end_byte
, Qt
);
5193 coding
->dst_object
= Qnil
;
5194 coding
->dst_pos_byte
= start_byte
;
5195 if (start
>= GPT
|| end
<= GPT
)
5197 coding
->consumed_char
= end
- start
;
5198 coding
->produced
= end_byte
- start_byte
;
5202 coding
->consumed_char
= GPT
- start
;
5203 coding
->produced
= GPT_BYTE
- start_byte
;
5208 if (coding
->produced
> 0)
5211 -= emacs_write (desc
,
5212 STRINGP (coding
->dst_object
)
5213 ? SSDATA (coding
->dst_object
)
5214 : (char *) BYTE_POS_ADDR (coding
->dst_pos_byte
),
5217 if (coding
->produced
)
5220 start
+= coding
->consumed_char
;
5226 DEFUN ("verify-visited-file-modtime", Fverify_visited_file_modtime
,
5227 Sverify_visited_file_modtime
, 0, 1, 0,
5228 doc
: /* Return t if last mod time of BUF's visited file matches what BUF records.
5229 This means that the file has not been changed since it was visited or saved.
5230 If BUF is omitted or nil, it defaults to the current buffer.
5231 See Info node `(elisp)Modification Time' for more details. */)
5236 Lisp_Object handler
;
5237 Lisp_Object filename
;
5248 if (!STRINGP (BVAR (b
, filename
))) return Qt
;
5249 if (EMACS_NSECS (b
->modtime
) == UNKNOWN_MODTIME_NSECS
) return Qt
;
5251 /* If the file name has special constructs in it,
5252 call the corresponding file handler. */
5253 handler
= Ffind_file_name_handler (BVAR (b
, filename
),
5254 Qverify_visited_file_modtime
);
5255 if (!NILP (handler
))
5256 return call2 (handler
, Qverify_visited_file_modtime
, buf
);
5258 filename
= ENCODE_FILE (BVAR (b
, filename
));
5260 mtime
= (stat (SSDATA (filename
), &st
) == 0
5261 ? get_stat_mtime (&st
)
5262 : time_error_value (errno
));
5263 if (EMACS_TIME_EQ (mtime
, b
->modtime
)
5264 && (b
->modtime_size
< 0
5265 || st
.st_size
== b
->modtime_size
))
5270 DEFUN ("clear-visited-file-modtime", Fclear_visited_file_modtime
,
5271 Sclear_visited_file_modtime
, 0, 0, 0,
5272 doc
: /* Clear out records of last mod time of visited file.
5273 Next attempt to save will certainly not complain of a discrepancy. */)
5276 current_buffer
->modtime
= make_emacs_time (0, UNKNOWN_MODTIME_NSECS
);
5277 current_buffer
->modtime_size
= -1;
5281 DEFUN ("visited-file-modtime", Fvisited_file_modtime
,
5282 Svisited_file_modtime
, 0, 0, 0,
5283 doc
: /* Return the current buffer's recorded visited file modification time.
5284 The value is a list of the form (HIGH LOW USEC PSEC), like the time values that
5285 `file-attributes' returns. If the current buffer has no recorded file
5286 modification time, this function returns 0. If the visited file
5287 doesn't exist, HIGH will be -1.
5288 See Info node `(elisp)Modification Time' for more details. */)
5291 if (EMACS_NSECS (current_buffer
->modtime
) < 0)
5293 if (EMACS_NSECS (current_buffer
->modtime
) == NONEXISTENT_MODTIME_NSECS
)
5295 /* make_lisp_time won't work here if time_t is unsigned. */
5296 return list4 (make_number (-1), make_number (65535),
5297 make_number (0), make_number (0));
5299 return make_number (0);
5301 return make_lisp_time (current_buffer
->modtime
);
5304 DEFUN ("set-visited-file-modtime", Fset_visited_file_modtime
,
5305 Sset_visited_file_modtime
, 0, 1, 0,
5306 doc
: /* Update buffer's recorded modification time from the visited file's time.
5307 Useful if the buffer was not read from the file normally
5308 or if the file itself has been changed for some known benign reason.
5309 An argument specifies the modification time value to use
5310 \(instead of that of the visited file), in the form of a list
5311 \(HIGH LOW USEC PSEC) as returned by `current-time'. */)
5312 (Lisp_Object time_list
)
5314 if (!NILP (time_list
))
5316 current_buffer
->modtime
= lisp_time_argument (time_list
);
5317 current_buffer
->modtime_size
= -1;
5321 register Lisp_Object filename
;
5323 Lisp_Object handler
;
5325 filename
= Fexpand_file_name (BVAR (current_buffer
, filename
), Qnil
);
5327 /* If the file name has special constructs in it,
5328 call the corresponding file handler. */
5329 handler
= Ffind_file_name_handler (filename
, Qset_visited_file_modtime
);
5330 if (!NILP (handler
))
5331 /* The handler can find the file name the same way we did. */
5332 return call2 (handler
, Qset_visited_file_modtime
, Qnil
);
5334 filename
= ENCODE_FILE (filename
);
5336 if (stat (SSDATA (filename
), &st
) >= 0)
5338 current_buffer
->modtime
= get_stat_mtime (&st
);
5339 current_buffer
->modtime_size
= st
.st_size
;
5347 auto_save_error (Lisp_Object error_val
)
5349 Lisp_Object args
[3], msg
;
5351 struct gcpro gcpro1
;
5355 auto_save_error_occurred
= 1;
5357 ring_bell (XFRAME (selected_frame
));
5359 args
[0] = build_string ("Auto-saving %s: %s");
5360 args
[1] = BVAR (current_buffer
, name
);
5361 args
[2] = Ferror_message_string (error_val
);
5362 msg
= Fformat (3, args
);
5364 nbytes
= SBYTES (msg
);
5365 msgbuf
= SAFE_ALLOCA (nbytes
);
5366 memcpy (msgbuf
, SDATA (msg
), nbytes
);
5368 for (i
= 0; i
< 3; ++i
)
5371 message2 (msgbuf
, nbytes
, STRING_MULTIBYTE (msg
));
5373 message2_nolog (msgbuf
, nbytes
, STRING_MULTIBYTE (msg
));
5374 Fsleep_for (make_number (1), Qnil
);
5388 auto_save_mode_bits
= 0666;
5390 /* Get visited file's mode to become the auto save file's mode. */
5391 if (! NILP (BVAR (current_buffer
, filename
)))
5393 if (stat (SSDATA (BVAR (current_buffer
, filename
)), &st
) >= 0)
5394 /* But make sure we can overwrite it later! */
5395 auto_save_mode_bits
= (st
.st_mode
| 0600) & 0777;
5396 else if (modes
= Ffile_modes (BVAR (current_buffer
, filename
)),
5398 /* Remote files don't cooperate with stat. */
5399 auto_save_mode_bits
= (XINT (modes
) | 0600) & 0777;
5403 Fwrite_region (Qnil
, Qnil
, BVAR (current_buffer
, auto_save_file_name
), Qnil
,
5404 NILP (Vauto_save_visited_file_name
) ? Qlambda
: Qt
,
5409 do_auto_save_unwind (Lisp_Object arg
) /* used as unwind-protect function */
5412 FILE *stream
= (FILE *) XSAVE_VALUE (arg
)->pointer
;
5424 do_auto_save_unwind_1 (Lisp_Object value
) /* used as unwind-protect function */
5427 minibuffer_auto_raise
= XINT (value
);
5432 do_auto_save_make_dir (Lisp_Object dir
)
5436 auto_saving_dir_umask
= 077;
5437 result
= call2 (Qmake_directory
, dir
, Qt
);
5438 auto_saving_dir_umask
= 0;
5443 do_auto_save_eh (Lisp_Object ignore
)
5445 auto_saving_dir_umask
= 0;
5449 DEFUN ("do-auto-save", Fdo_auto_save
, Sdo_auto_save
, 0, 2, "",
5450 doc
: /* Auto-save all buffers that need it.
5451 This is all buffers that have auto-saving enabled
5452 and are changed since last auto-saved.
5453 Auto-saving writes the buffer into a file
5454 so that your editing is not lost if the system crashes.
5455 This file is not the file you visited; that changes only when you save.
5456 Normally we run the normal hook `auto-save-hook' before saving.
5458 A non-nil NO-MESSAGE argument means do not print any message if successful.
5459 A non-nil CURRENT-ONLY argument means save only current buffer. */)
5460 (Lisp_Object no_message
, Lisp_Object current_only
)
5462 struct buffer
*old
= current_buffer
, *b
;
5463 Lisp_Object tail
, buf
, hook
;
5464 bool auto_saved
= 0;
5465 int do_handled_files
;
5467 FILE *stream
= NULL
;
5468 ptrdiff_t count
= SPECPDL_INDEX ();
5469 bool orig_minibuffer_auto_raise
= minibuffer_auto_raise
;
5470 bool old_message_p
= 0;
5471 struct gcpro gcpro1
, gcpro2
;
5473 if (max_specpdl_size
< specpdl_size
+ 40)
5474 max_specpdl_size
= specpdl_size
+ 40;
5479 if (NILP (no_message
))
5481 old_message_p
= push_message ();
5482 record_unwind_protect (pop_message_unwind
, Qnil
);
5485 /* Ordinarily don't quit within this function,
5486 but don't make it impossible to quit (in case we get hung in I/O). */
5490 /* No GCPRO needed, because (when it matters) all Lisp_Object variables
5491 point to non-strings reached from Vbuffer_alist. */
5493 hook
= intern ("auto-save-hook");
5494 Frun_hooks (1, &hook
);
5496 if (STRINGP (Vauto_save_list_file_name
))
5498 Lisp_Object listfile
;
5500 listfile
= Fexpand_file_name (Vauto_save_list_file_name
, Qnil
);
5502 /* Don't try to create the directory when shutting down Emacs,
5503 because creating the directory might signal an error, and
5504 that would leave Emacs in a strange state. */
5505 if (!NILP (Vrun_hooks
))
5509 GCPRO2 (dir
, listfile
);
5510 dir
= Ffile_name_directory (listfile
);
5511 if (NILP (Ffile_directory_p (dir
)))
5512 internal_condition_case_1 (do_auto_save_make_dir
,
5518 stream
= fopen (SSDATA (listfile
), "w");
5521 record_unwind_protect (do_auto_save_unwind
,
5522 make_save_value (stream
, 0));
5523 record_unwind_protect (do_auto_save_unwind_1
,
5524 make_number (minibuffer_auto_raise
));
5525 minibuffer_auto_raise
= 0;
5527 auto_save_error_occurred
= 0;
5529 /* On first pass, save all files that don't have handlers.
5530 On second pass, save all files that do have handlers.
5532 If Emacs is crashing, the handlers may tweak what is causing
5533 Emacs to crash in the first place, and it would be a shame if
5534 Emacs failed to autosave perfectly ordinary files because it
5535 couldn't handle some ange-ftp'd file. */
5537 for (do_handled_files
= 0; do_handled_files
< 2; do_handled_files
++)
5538 for (tail
= Vbuffer_alist
; CONSP (tail
); tail
= XCDR (tail
))
5540 buf
= XCDR (XCAR (tail
));
5543 /* Record all the buffers that have auto save mode
5544 in the special file that lists them. For each of these buffers,
5545 Record visited name (if any) and auto save name. */
5546 if (STRINGP (BVAR (b
, auto_save_file_name
))
5547 && stream
!= NULL
&& do_handled_files
== 0)
5550 if (!NILP (BVAR (b
, filename
)))
5552 fwrite (SDATA (BVAR (b
, filename
)), 1,
5553 SBYTES (BVAR (b
, filename
)), stream
);
5555 putc ('\n', stream
);
5556 fwrite (SDATA (BVAR (b
, auto_save_file_name
)), 1,
5557 SBYTES (BVAR (b
, auto_save_file_name
)), stream
);
5558 putc ('\n', stream
);
5562 if (!NILP (current_only
)
5563 && b
!= current_buffer
)
5566 /* Don't auto-save indirect buffers.
5567 The base buffer takes care of it. */
5571 /* Check for auto save enabled
5572 and file changed since last auto save
5573 and file changed since last real save. */
5574 if (STRINGP (BVAR (b
, auto_save_file_name
))
5575 && BUF_SAVE_MODIFF (b
) < BUF_MODIFF (b
)
5576 && BUF_AUTOSAVE_MODIFF (b
) < BUF_MODIFF (b
)
5577 /* -1 means we've turned off autosaving for a while--see below. */
5578 && XINT (BVAR (b
, save_length
)) >= 0
5579 && (do_handled_files
5580 || NILP (Ffind_file_name_handler (BVAR (b
, auto_save_file_name
),
5583 EMACS_TIME before_time
= current_emacs_time ();
5584 EMACS_TIME after_time
;
5586 /* If we had a failure, don't try again for 20 minutes. */
5587 if (b
->auto_save_failure_time
> 0
5588 && EMACS_SECS (before_time
) - b
->auto_save_failure_time
< 1200)
5591 set_buffer_internal (b
);
5592 if (NILP (Vauto_save_include_big_deletions
)
5593 && (XFASTINT (BVAR (b
, save_length
)) * 10
5594 > (BUF_Z (b
) - BUF_BEG (b
)) * 13)
5595 /* A short file is likely to change a large fraction;
5596 spare the user annoying messages. */
5597 && XFASTINT (BVAR (b
, save_length
)) > 5000
5598 /* These messages are frequent and annoying for `*mail*'. */
5599 && !EQ (BVAR (b
, filename
), Qnil
)
5600 && NILP (no_message
))
5602 /* It has shrunk too much; turn off auto-saving here. */
5603 minibuffer_auto_raise
= orig_minibuffer_auto_raise
;
5604 message_with_string ("Buffer %s has shrunk a lot; auto save disabled in that buffer until next real save",
5606 minibuffer_auto_raise
= 0;
5607 /* Turn off auto-saving until there's a real save,
5608 and prevent any more warnings. */
5609 XSETINT (BVAR (b
, save_length
), -1);
5610 Fsleep_for (make_number (1), Qnil
);
5613 if (!auto_saved
&& NILP (no_message
))
5614 message1 ("Auto-saving...");
5615 internal_condition_case (auto_save_1
, Qt
, auto_save_error
);
5617 BUF_AUTOSAVE_MODIFF (b
) = BUF_MODIFF (b
);
5618 XSETFASTINT (BVAR (current_buffer
, save_length
), Z
- BEG
);
5619 set_buffer_internal (old
);
5621 after_time
= current_emacs_time ();
5623 /* If auto-save took more than 60 seconds,
5624 assume it was an NFS failure that got a timeout. */
5625 if (EMACS_SECS (after_time
) - EMACS_SECS (before_time
) > 60)
5626 b
->auto_save_failure_time
= EMACS_SECS (after_time
);
5630 /* Prevent another auto save till enough input events come in. */
5631 record_auto_save ();
5633 if (auto_saved
&& NILP (no_message
))
5637 /* If we are going to restore an old message,
5638 give time to read ours. */
5639 sit_for (make_number (1), 0, 0);
5642 else if (!auto_save_error_occurred
)
5643 /* Don't overwrite the error message if an error occurred.
5644 If we displayed a message and then restored a state
5645 with no message, leave a "done" message on the screen. */
5646 message1 ("Auto-saving...done");
5651 /* This restores the message-stack status. */
5652 unbind_to (count
, Qnil
);
5656 DEFUN ("set-buffer-auto-saved", Fset_buffer_auto_saved
,
5657 Sset_buffer_auto_saved
, 0, 0, 0,
5658 doc
: /* Mark current buffer as auto-saved with its current text.
5659 No auto-save file will be written until the buffer changes again. */)
5662 /* FIXME: This should not be called in indirect buffers, since
5663 they're not autosaved. */
5664 BUF_AUTOSAVE_MODIFF (current_buffer
) = MODIFF
;
5665 XSETFASTINT (BVAR (current_buffer
, save_length
), Z
- BEG
);
5666 current_buffer
->auto_save_failure_time
= 0;
5670 DEFUN ("clear-buffer-auto-save-failure", Fclear_buffer_auto_save_failure
,
5671 Sclear_buffer_auto_save_failure
, 0, 0, 0,
5672 doc
: /* Clear any record of a recent auto-save failure in the current buffer. */)
5675 current_buffer
->auto_save_failure_time
= 0;
5679 DEFUN ("recent-auto-save-p", Frecent_auto_save_p
, Srecent_auto_save_p
,
5681 doc
: /* Return t if current buffer has been auto-saved recently.
5682 More precisely, if it has been auto-saved since last read from or saved
5683 in the visited file. If the buffer has no visited file,
5684 then any auto-save counts as "recent". */)
5687 /* FIXME: maybe we should return nil for indirect buffers since
5688 they're never autosaved. */
5689 return (SAVE_MODIFF
< BUF_AUTOSAVE_MODIFF (current_buffer
) ? Qt
: Qnil
);
5692 /* Reading and completing file names */
5694 DEFUN ("next-read-file-uses-dialog-p", Fnext_read_file_uses_dialog_p
,
5695 Snext_read_file_uses_dialog_p
, 0, 0, 0,
5696 doc
: /* Return t if a call to `read-file-name' will use a dialog.
5697 The return value is only relevant for a call to `read-file-name' that happens
5698 before any other event (mouse or keypress) is handled. */)
5701 #if defined (USE_MOTIF) || defined (HAVE_NTGUI) || defined (USE_GTK) \
5702 || defined (HAVE_NS)
5703 if ((NILP (last_nonmenu_event
) || CONSP (last_nonmenu_event
))
5713 Fread_file_name (Lisp_Object prompt
, Lisp_Object dir
, Lisp_Object default_filename
, Lisp_Object mustmatch
, Lisp_Object initial
, Lisp_Object predicate
)
5715 struct gcpro gcpro1
;
5716 Lisp_Object args
[7];
5718 GCPRO1 (default_filename
);
5719 args
[0] = intern ("read-file-name");
5722 args
[3] = default_filename
;
5723 args
[4] = mustmatch
;
5725 args
[6] = predicate
;
5726 RETURN_UNGCPRO (Ffuncall (7, args
));
5731 syms_of_fileio (void)
5733 DEFSYM (Qoperations
, "operations");
5734 DEFSYM (Qexpand_file_name
, "expand-file-name");
5735 DEFSYM (Qsubstitute_in_file_name
, "substitute-in-file-name");
5736 DEFSYM (Qdirectory_file_name
, "directory-file-name");
5737 DEFSYM (Qfile_name_directory
, "file-name-directory");
5738 DEFSYM (Qfile_name_nondirectory
, "file-name-nondirectory");
5739 DEFSYM (Qunhandled_file_name_directory
, "unhandled-file-name-directory");
5740 DEFSYM (Qfile_name_as_directory
, "file-name-as-directory");
5741 DEFSYM (Qcopy_file
, "copy-file");
5742 DEFSYM (Qmake_directory_internal
, "make-directory-internal");
5743 DEFSYM (Qmake_directory
, "make-directory");
5744 DEFSYM (Qdelete_directory_internal
, "delete-directory-internal");
5745 DEFSYM (Qdelete_file
, "delete-file");
5746 DEFSYM (Qrename_file
, "rename-file");
5747 DEFSYM (Qadd_name_to_file
, "add-name-to-file");
5748 DEFSYM (Qmake_symbolic_link
, "make-symbolic-link");
5749 DEFSYM (Qfile_exists_p
, "file-exists-p");
5750 DEFSYM (Qfile_executable_p
, "file-executable-p");
5751 DEFSYM (Qfile_readable_p
, "file-readable-p");
5752 DEFSYM (Qfile_writable_p
, "file-writable-p");
5753 DEFSYM (Qfile_symlink_p
, "file-symlink-p");
5754 DEFSYM (Qaccess_file
, "access-file");
5755 DEFSYM (Qfile_directory_p
, "file-directory-p");
5756 DEFSYM (Qfile_regular_p
, "file-regular-p");
5757 DEFSYM (Qfile_accessible_directory_p
, "file-accessible-directory-p");
5758 DEFSYM (Qfile_modes
, "file-modes");
5759 DEFSYM (Qset_file_modes
, "set-file-modes");
5760 DEFSYM (Qset_file_times
, "set-file-times");
5761 DEFSYM (Qfile_selinux_context
, "file-selinux-context");
5762 DEFSYM (Qset_file_selinux_context
, "set-file-selinux-context");
5763 DEFSYM (Qfile_acl
, "file-acl");
5764 DEFSYM (Qset_file_acl
, "set-file-acl");
5765 DEFSYM (Qfile_newer_than_file_p
, "file-newer-than-file-p");
5766 DEFSYM (Qinsert_file_contents
, "insert-file-contents");
5767 DEFSYM (Qwrite_region
, "write-region");
5768 DEFSYM (Qverify_visited_file_modtime
, "verify-visited-file-modtime");
5769 DEFSYM (Qset_visited_file_modtime
, "set-visited-file-modtime");
5770 DEFSYM (Qauto_save_coding
, "auto-save-coding");
5772 DEFSYM (Qfile_name_history
, "file-name-history");
5773 Fset (Qfile_name_history
, Qnil
);
5775 DEFSYM (Qfile_error
, "file-error");
5776 DEFSYM (Qfile_already_exists
, "file-already-exists");
5777 DEFSYM (Qfile_date_error
, "file-date-error");
5778 DEFSYM (Qexcl
, "excl");
5780 DEFVAR_LISP ("file-name-coding-system", Vfile_name_coding_system
,
5781 doc
: /* Coding system for encoding file names.
5782 If it is nil, `default-file-name-coding-system' (which see) is used. */);
5783 Vfile_name_coding_system
= Qnil
;
5785 DEFVAR_LISP ("default-file-name-coding-system",
5786 Vdefault_file_name_coding_system
,
5787 doc
: /* Default coding system for encoding file names.
5788 This variable is used only when `file-name-coding-system' is nil.
5790 This variable is set/changed by the command `set-language-environment'.
5791 User should not set this variable manually,
5792 instead use `file-name-coding-system' to get a constant encoding
5793 of file names regardless of the current language environment. */);
5794 Vdefault_file_name_coding_system
= Qnil
;
5796 DEFSYM (Qformat_decode
, "format-decode");
5797 DEFSYM (Qformat_annotate_function
, "format-annotate-function");
5798 DEFSYM (Qafter_insert_file_set_coding
, "after-insert-file-set-coding");
5799 DEFSYM (Qcar_less_than_car
, "car-less-than-car");
5801 Fput (Qfile_error
, Qerror_conditions
,
5802 Fpurecopy (list2 (Qfile_error
, Qerror
)));
5803 Fput (Qfile_error
, Qerror_message
,
5804 build_pure_c_string ("File error"));
5806 Fput (Qfile_already_exists
, Qerror_conditions
,
5807 Fpurecopy (list3 (Qfile_already_exists
, Qfile_error
, Qerror
)));
5808 Fput (Qfile_already_exists
, Qerror_message
,
5809 build_pure_c_string ("File already exists"));
5811 Fput (Qfile_date_error
, Qerror_conditions
,
5812 Fpurecopy (list3 (Qfile_date_error
, Qfile_error
, Qerror
)));
5813 Fput (Qfile_date_error
, Qerror_message
,
5814 build_pure_c_string ("Cannot set file date"));
5816 DEFVAR_LISP ("file-name-handler-alist", Vfile_name_handler_alist
,
5817 doc
: /* Alist of elements (REGEXP . HANDLER) for file names handled specially.
5818 If a file name matches REGEXP, all I/O on that file is done by calling
5819 HANDLER. If a file name matches more than one handler, the handler
5820 whose match starts last in the file name gets precedence. The
5821 function `find-file-name-handler' checks this list for a handler for
5824 HANDLER should be a function. The first argument given to it is the
5825 name of the I/O primitive to be handled; the remaining arguments are
5826 the arguments that were passed to that primitive. For example, if you
5827 do (file-exists-p FILENAME) and FILENAME is handled by HANDLER, then
5828 HANDLER is called like this:
5830 (funcall HANDLER 'file-exists-p FILENAME)
5832 Note that HANDLER must be able to handle all I/O primitives; if it has
5833 nothing special to do for a primitive, it should reinvoke the
5834 primitive to handle the operation \"the usual way\".
5835 See Info node `(elisp)Magic File Names' for more details. */);
5836 Vfile_name_handler_alist
= Qnil
;
5838 DEFVAR_LISP ("set-auto-coding-function",
5839 Vset_auto_coding_function
,
5840 doc
: /* If non-nil, a function to call to decide a coding system of file.
5841 Two arguments are passed to this function: the file name
5842 and the length of a file contents following the point.
5843 This function should return a coding system to decode the file contents.
5844 It should check the file name against `auto-coding-alist'.
5845 If no coding system is decided, it should check a coding system
5846 specified in the heading lines with the format:
5847 -*- ... coding: CODING-SYSTEM; ... -*-
5848 or local variable spec of the tailing lines with `coding:' tag. */);
5849 Vset_auto_coding_function
= Qnil
;
5851 DEFVAR_LISP ("after-insert-file-functions", Vafter_insert_file_functions
,
5852 doc
: /* A list of functions to be called at the end of `insert-file-contents'.
5853 Each is passed one argument, the number of characters inserted,
5854 with point at the start of the inserted text. Each function
5855 should leave point the same, and return the new character count.
5856 If `insert-file-contents' is intercepted by a handler from
5857 `file-name-handler-alist', that handler is responsible for calling the
5858 functions in `after-insert-file-functions' if appropriate. */);
5859 Vafter_insert_file_functions
= Qnil
;
5861 DEFVAR_LISP ("write-region-annotate-functions", Vwrite_region_annotate_functions
,
5862 doc
: /* A list of functions to be called at the start of `write-region'.
5863 Each is passed two arguments, START and END as for `write-region'.
5864 These are usually two numbers but not always; see the documentation
5865 for `write-region'. The function should return a list of pairs
5866 of the form (POSITION . STRING), consisting of strings to be effectively
5867 inserted at the specified positions of the file being written (1 means to
5868 insert before the first byte written). The POSITIONs must be sorted into
5871 If there are several annotation functions, the lists returned by these
5872 functions are merged destructively. As each annotation function runs,
5873 the variable `write-region-annotations-so-far' contains a list of all
5874 annotations returned by previous annotation functions.
5876 An annotation function can return with a different buffer current.
5877 Doing so removes the annotations returned by previous functions, and
5878 resets START and END to `point-min' and `point-max' of the new buffer.
5880 After `write-region' completes, Emacs calls the function stored in
5881 `write-region-post-annotation-function', once for each buffer that was
5882 current when building the annotations (i.e., at least once), with that
5883 buffer current. */);
5884 Vwrite_region_annotate_functions
= Qnil
;
5885 DEFSYM (Qwrite_region_annotate_functions
, "write-region-annotate-functions");
5887 DEFVAR_LISP ("write-region-post-annotation-function",
5888 Vwrite_region_post_annotation_function
,
5889 doc
: /* Function to call after `write-region' completes.
5890 The function is called with no arguments. If one or more of the
5891 annotation functions in `write-region-annotate-functions' changed the
5892 current buffer, the function stored in this variable is called for
5893 each of those additional buffers as well, in addition to the original
5894 buffer. The relevant buffer is current during each function call. */);
5895 Vwrite_region_post_annotation_function
= Qnil
;
5896 staticpro (&Vwrite_region_annotation_buffers
);
5898 DEFVAR_LISP ("write-region-annotations-so-far",
5899 Vwrite_region_annotations_so_far
,
5900 doc
: /* When an annotation function is called, this holds the previous annotations.
5901 These are the annotations made by other annotation functions
5902 that were already called. See also `write-region-annotate-functions'. */);
5903 Vwrite_region_annotations_so_far
= Qnil
;
5905 DEFVAR_LISP ("inhibit-file-name-handlers", Vinhibit_file_name_handlers
,
5906 doc
: /* A list of file name handlers that temporarily should not be used.
5907 This applies only to the operation `inhibit-file-name-operation'. */);
5908 Vinhibit_file_name_handlers
= Qnil
;
5910 DEFVAR_LISP ("inhibit-file-name-operation", Vinhibit_file_name_operation
,
5911 doc
: /* The operation for which `inhibit-file-name-handlers' is applicable. */);
5912 Vinhibit_file_name_operation
= Qnil
;
5914 DEFVAR_LISP ("auto-save-list-file-name", Vauto_save_list_file_name
,
5915 doc
: /* File name in which we write a list of all auto save file names.
5916 This variable is initialized automatically from `auto-save-list-file-prefix'
5917 shortly after Emacs reads your init file, if you have not yet given it
5918 a non-nil value. */);
5919 Vauto_save_list_file_name
= Qnil
;
5921 DEFVAR_LISP ("auto-save-visited-file-name", Vauto_save_visited_file_name
,
5922 doc
: /* Non-nil says auto-save a buffer in the file it is visiting, when practical.
5923 Normally auto-save files are written under other names. */);
5924 Vauto_save_visited_file_name
= Qnil
;
5926 DEFVAR_LISP ("auto-save-include-big-deletions", Vauto_save_include_big_deletions
,
5927 doc
: /* If non-nil, auto-save even if a large part of the text is deleted.
5928 If nil, deleting a substantial portion of the text disables auto-save
5929 in the buffer; this is the default behavior, because the auto-save
5930 file is usually more useful if it contains the deleted text. */);
5931 Vauto_save_include_big_deletions
= Qnil
;
5934 DEFVAR_BOOL ("write-region-inhibit-fsync", write_region_inhibit_fsync
,
5935 doc
: /* Non-nil means don't call fsync in `write-region'.
5936 This variable affects calls to `write-region' as well as save commands.
5937 A non-nil value may result in data loss! */);
5938 write_region_inhibit_fsync
= 0;
5941 DEFVAR_BOOL ("delete-by-moving-to-trash", delete_by_moving_to_trash
,
5942 doc
: /* Specifies whether to use the system's trash can.
5943 When non-nil, certain file deletion commands use the function
5944 `move-file-to-trash' instead of deleting files outright.
5945 This includes interactive calls to `delete-file' and
5946 `delete-directory' and the Dired deletion commands. */);
5947 delete_by_moving_to_trash
= 0;
5948 Qdelete_by_moving_to_trash
= intern_c_string ("delete-by-moving-to-trash");
5950 DEFSYM (Qmove_file_to_trash
, "move-file-to-trash");
5951 DEFSYM (Qcopy_directory
, "copy-directory");
5952 DEFSYM (Qdelete_directory
, "delete-directory");
5954 defsubr (&Sfind_file_name_handler
);
5955 defsubr (&Sfile_name_directory
);
5956 defsubr (&Sfile_name_nondirectory
);
5957 defsubr (&Sunhandled_file_name_directory
);
5958 defsubr (&Sfile_name_as_directory
);
5959 defsubr (&Sdirectory_file_name
);
5960 defsubr (&Smake_temp_name
);
5961 defsubr (&Sexpand_file_name
);
5962 defsubr (&Ssubstitute_in_file_name
);
5963 defsubr (&Scopy_file
);
5964 defsubr (&Smake_directory_internal
);
5965 defsubr (&Sdelete_directory_internal
);
5966 defsubr (&Sdelete_file
);
5967 defsubr (&Srename_file
);
5968 defsubr (&Sadd_name_to_file
);
5969 defsubr (&Smake_symbolic_link
);
5970 defsubr (&Sfile_name_absolute_p
);
5971 defsubr (&Sfile_exists_p
);
5972 defsubr (&Sfile_executable_p
);
5973 defsubr (&Sfile_readable_p
);
5974 defsubr (&Sfile_writable_p
);
5975 defsubr (&Saccess_file
);
5976 defsubr (&Sfile_symlink_p
);
5977 defsubr (&Sfile_directory_p
);
5978 defsubr (&Sfile_accessible_directory_p
);
5979 defsubr (&Sfile_regular_p
);
5980 defsubr (&Sfile_modes
);
5981 defsubr (&Sset_file_modes
);
5982 defsubr (&Sset_file_times
);
5983 defsubr (&Sfile_selinux_context
);
5984 defsubr (&Sfile_acl
);
5985 defsubr (&Sset_file_acl
);
5986 defsubr (&Sset_file_selinux_context
);
5987 defsubr (&Sset_default_file_modes
);
5988 defsubr (&Sdefault_file_modes
);
5989 defsubr (&Sfile_newer_than_file_p
);
5990 defsubr (&Sinsert_file_contents
);
5991 defsubr (&Swrite_region
);
5992 defsubr (&Scar_less_than_car
);
5993 defsubr (&Sverify_visited_file_modtime
);
5994 defsubr (&Sclear_visited_file_modtime
);
5995 defsubr (&Svisited_file_modtime
);
5996 defsubr (&Sset_visited_file_modtime
);
5997 defsubr (&Sdo_auto_save
);
5998 defsubr (&Sset_buffer_auto_saved
);
5999 defsubr (&Sclear_buffer_auto_save_failure
);
6000 defsubr (&Srecent_auto_save_p
);
6002 defsubr (&Snext_read_file_uses_dialog_p
);
6005 defsubr (&Sunix_sync
);