1 /* File IO for GNU Emacs.
2 Copyright (C) 1985, 1986, 1987, 1988, 1993, 1994, 1995, 1996, 1997, 1998,
3 1999, 2000, 2001, 2003, 2004, 2005 Free Software Foundation, Inc.
5 This file is part of GNU Emacs.
7 GNU Emacs is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2, or (at your option)
12 GNU Emacs is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GNU Emacs; see the file COPYING. If not, write to
19 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
29 #include <sys/types.h>
36 #if !defined (S_ISLNK) && defined (S_IFLNK)
37 # define S_ISLNK(m) (((m) & S_IFMT) == S_IFLNK)
40 #if !defined (S_ISFIFO) && defined (S_IFIFO)
41 # define S_ISFIFO(m) (((m) & S_IFMT) == S_IFIFO)
44 #if !defined (S_ISREG) && defined (S_IFREG)
45 # define S_ISREG(m) (((m) & S_IFMT) == S_IFREG)
76 #include "intervals.h"
78 #include "character.h"
87 #endif /* not WINDOWSNT */
91 #include <sys/param.h>
99 #define CORRECT_DIR_SEPS(s) \
100 do { if ('/' == DIRECTORY_SEP) dostounix_filename (s); \
101 else unixtodos_filename (s); \
103 /* On Windows, drive letters must be alphabetic - on DOS, the Netware
104 redirector allows the six letters between 'Z' and 'a' as well. */
106 #define IS_DRIVE(x) ((x) >= 'A' && (x) <= 'z')
109 #define IS_DRIVE(x) isalpha (x)
111 /* Need to lower-case the drive letter, or else expanded
112 filenames will sometimes compare inequal, because
113 `expand-file-name' doesn't always down-case the drive letter. */
114 #define DRIVE_LETTER(x) (tolower (x))
135 #include "commands.h"
136 extern int use_dialog_box
;
137 extern int use_file_dialog
;
151 #ifndef FILE_SYSTEM_CASE
152 #define FILE_SYSTEM_CASE(filename) (filename)
155 /* Nonzero during writing of auto-save files */
158 /* Set by auto_save_1 to mode of original file so Fwrite_region will create
159 a new file with the same mode as the original */
160 int auto_save_mode_bits
;
162 /* The symbol bound to coding-system-for-read when
163 insert-file-contents is called for recovering a file. This is not
164 an actual coding system name, but just an indicator to tell
165 insert-file-contents to use `emacs-mule' with a special flag for
166 auto saving and recovering a file. */
167 Lisp_Object Qauto_save_coding
;
169 /* Coding system for file names, or nil if none. */
170 Lisp_Object Vfile_name_coding_system
;
172 /* Coding system for file names used only when
173 Vfile_name_coding_system is nil. */
174 Lisp_Object Vdefault_file_name_coding_system
;
176 /* Alist of elements (REGEXP . HANDLER) for file names
177 whose I/O is done with a special handler. */
178 Lisp_Object Vfile_name_handler_alist
;
180 /* Lisp functions for translating file formats */
181 Lisp_Object Qformat_decode
, Qformat_annotate_function
;
183 /* Function to be called to decide a coding system of a reading file. */
184 Lisp_Object Vset_auto_coding_function
;
186 /* Functions to be called to process text properties in inserted file. */
187 Lisp_Object Vafter_insert_file_functions
;
189 /* Lisp function for setting buffer-file-coding-system and the
190 multibyteness of the current buffer after inserting a file. */
191 Lisp_Object Qafter_insert_file_set_coding
;
193 /* Functions to be called to create text property annotations for file. */
194 Lisp_Object Vwrite_region_annotate_functions
;
195 Lisp_Object Qwrite_region_annotate_functions
;
197 /* During build_annotations, each time an annotation function is called,
198 this holds the annotations made by the previous functions. */
199 Lisp_Object Vwrite_region_annotations_so_far
;
201 /* File name in which we write a list of all our auto save files. */
202 Lisp_Object Vauto_save_list_file_name
;
204 /* Function to call to read a file name. */
205 Lisp_Object Vread_file_name_function
;
207 /* Current predicate used by read_file_name_internal. */
208 Lisp_Object Vread_file_name_predicate
;
210 /* Nonzero means completion ignores case when reading file name. */
211 int read_file_name_completion_ignore_case
;
213 /* Nonzero means, when reading a filename in the minibuffer,
214 start out by inserting the default directory into the minibuffer. */
215 int insert_default_directory
;
217 /* On VMS, nonzero means write new files with record format stmlf.
218 Zero means use var format. */
221 /* On NT, specifies the directory separator character, used (eg.) when
222 expanding file names. This can be bound to / or \. */
223 Lisp_Object Vdirectory_sep_char
;
225 extern Lisp_Object Vuser_login_name
;
228 extern Lisp_Object Vw32_get_true_file_attributes
;
231 extern int minibuf_level
;
233 extern int minibuffer_auto_raise
;
235 extern int history_delete_duplicates
;
237 /* These variables describe handlers that have "already" had a chance
238 to handle the current operation.
240 Vinhibit_file_name_handlers is a list of file name handlers.
241 Vinhibit_file_name_operation is the operation being handled.
242 If we try to handle that operation, we ignore those handlers. */
244 static Lisp_Object Vinhibit_file_name_handlers
;
245 static Lisp_Object Vinhibit_file_name_operation
;
247 Lisp_Object Qfile_error
, Qfile_already_exists
, Qfile_date_error
;
249 Lisp_Object Qfile_name_history
;
251 Lisp_Object Qcar_less_than_car
;
253 static int a_write
P_ ((int, Lisp_Object
, int, int,
254 Lisp_Object
*, struct coding_system
*));
255 static int e_write
P_ ((int, Lisp_Object
, int, int, struct coding_system
*));
259 report_file_error (string
, data
)
263 Lisp_Object errstring
;
267 synchronize_system_messages_locale ();
268 str
= strerror (errorno
);
269 errstring
= code_convert_string_norecord (make_unibyte_string (str
,
271 Vlocale_coding_system
, 0);
277 Fsignal (Qfile_already_exists
, Fcons (errstring
, data
));
280 /* System error messages are capitalized. Downcase the initial
281 unless it is followed by a slash. */
282 if (SREF (errstring
, 1) != '/')
283 SSET (errstring
, 0, DOWNCASE (SREF (errstring
, 0)));
285 Fsignal (Qfile_error
,
286 Fcons (build_string (string
), Fcons (errstring
, data
)));
291 close_file_unwind (fd
)
294 emacs_close (XFASTINT (fd
));
298 /* Restore point, having saved it as a marker. */
301 restore_point_unwind (location
)
302 Lisp_Object location
;
304 Fgoto_char (location
);
305 Fset_marker (location
, Qnil
, Qnil
);
310 Lisp_Object Qexpand_file_name
;
311 Lisp_Object Qsubstitute_in_file_name
;
312 Lisp_Object Qdirectory_file_name
;
313 Lisp_Object Qfile_name_directory
;
314 Lisp_Object Qfile_name_nondirectory
;
315 Lisp_Object Qunhandled_file_name_directory
;
316 Lisp_Object Qfile_name_as_directory
;
317 Lisp_Object Qcopy_file
;
318 Lisp_Object Qmake_directory_internal
;
319 Lisp_Object Qmake_directory
;
320 Lisp_Object Qdelete_directory
;
321 Lisp_Object Qdelete_file
;
322 Lisp_Object Qrename_file
;
323 Lisp_Object Qadd_name_to_file
;
324 Lisp_Object Qmake_symbolic_link
;
325 Lisp_Object Qfile_exists_p
;
326 Lisp_Object Qfile_executable_p
;
327 Lisp_Object Qfile_readable_p
;
328 Lisp_Object Qfile_writable_p
;
329 Lisp_Object Qfile_symlink_p
;
330 Lisp_Object Qaccess_file
;
331 Lisp_Object Qfile_directory_p
;
332 Lisp_Object Qfile_regular_p
;
333 Lisp_Object Qfile_accessible_directory_p
;
334 Lisp_Object Qfile_modes
;
335 Lisp_Object Qset_file_modes
;
336 Lisp_Object Qset_file_times
;
337 Lisp_Object Qfile_newer_than_file_p
;
338 Lisp_Object Qinsert_file_contents
;
339 Lisp_Object Qwrite_region
;
340 Lisp_Object Qverify_visited_file_modtime
;
341 Lisp_Object Qset_visited_file_modtime
;
343 DEFUN ("find-file-name-handler", Ffind_file_name_handler
, Sfind_file_name_handler
, 2, 2, 0,
344 doc
: /* Return FILENAME's handler function for OPERATION, if it has one.
345 Otherwise, return nil.
346 A file name is handled if one of the regular expressions in
347 `file-name-handler-alist' matches it.
349 If OPERATION equals `inhibit-file-name-operation', then we ignore
350 any handlers that are members of `inhibit-file-name-handlers',
351 but we still do run any other handlers. This lets handlers
352 use the standard functions without calling themselves recursively. */)
353 (filename
, operation
)
354 Lisp_Object filename
, operation
;
356 /* This function must not munge the match data. */
357 Lisp_Object chain
, inhibited_handlers
, result
;
361 CHECK_STRING (filename
);
363 if (EQ (operation
, Vinhibit_file_name_operation
))
364 inhibited_handlers
= Vinhibit_file_name_handlers
;
366 inhibited_handlers
= Qnil
;
368 for (chain
= Vfile_name_handler_alist
; CONSP (chain
);
369 chain
= XCDR (chain
))
379 && (match_pos
= fast_string_match (string
, filename
)) > pos
)
381 Lisp_Object handler
, tem
;
383 handler
= XCDR (elt
);
384 tem
= Fmemq (handler
, inhibited_handlers
);
398 DEFUN ("file-name-directory", Ffile_name_directory
, Sfile_name_directory
,
400 doc
: /* Return the directory component in file name FILENAME.
401 Return nil if FILENAME does not include a directory.
402 Otherwise return a directory spec.
403 Given a Unix syntax file name, returns a string ending in slash;
404 on VMS, perhaps instead a string ending in `:', `]' or `>'. */)
406 Lisp_Object filename
;
409 register const unsigned char *beg
;
411 register unsigned char *beg
;
413 register const unsigned char *p
;
416 CHECK_STRING (filename
);
418 /* If the file name has special constructs in it,
419 call the corresponding file handler. */
420 handler
= Ffind_file_name_handler (filename
, Qfile_name_directory
);
422 return call2 (handler
, Qfile_name_directory
, filename
);
424 filename
= FILE_SYSTEM_CASE (filename
);
425 beg
= SDATA (filename
);
427 beg
= strcpy (alloca (strlen (beg
) + 1), beg
);
429 p
= beg
+ SBYTES (filename
);
431 while (p
!= beg
&& !IS_DIRECTORY_SEP (p
[-1])
433 && p
[-1] != ':' && p
[-1] != ']' && p
[-1] != '>'
436 /* only recognise drive specifier at the beginning */
438 /* handle the "/:d:foo" and "/:foo" cases correctly */
439 && ((p
== beg
+ 2 && !IS_DIRECTORY_SEP (*beg
))
440 || (p
== beg
+ 4 && IS_DIRECTORY_SEP (*beg
))))
447 /* Expansion of "c:" to drive and default directory. */
450 /* MAXPATHLEN+1 is guaranteed to be enough space for getdefdir. */
451 unsigned char *res
= alloca (MAXPATHLEN
+ 1);
452 unsigned char *r
= res
;
454 if (p
== beg
+ 4 && IS_DIRECTORY_SEP (*beg
) && beg
[1] == ':')
456 strncpy (res
, beg
, 2);
461 if (getdefdir (toupper (*beg
) - 'A' + 1, r
))
463 if (!IS_DIRECTORY_SEP (res
[strlen (res
) - 1]))
466 p
= beg
+ strlen (beg
);
469 CORRECT_DIR_SEPS (beg
);
472 return make_specified_string (beg
, -1, p
- beg
, STRING_MULTIBYTE (filename
));
475 DEFUN ("file-name-nondirectory", Ffile_name_nondirectory
,
476 Sfile_name_nondirectory
, 1, 1, 0,
477 doc
: /* Return file name FILENAME sans its directory.
478 For example, in a Unix-syntax file name,
479 this is everything after the last slash,
480 or the entire name if it contains no slash. */)
482 Lisp_Object filename
;
484 register const unsigned char *beg
, *p
, *end
;
487 CHECK_STRING (filename
);
489 /* If the file name has special constructs in it,
490 call the corresponding file handler. */
491 handler
= Ffind_file_name_handler (filename
, Qfile_name_nondirectory
);
493 return call2 (handler
, Qfile_name_nondirectory
, filename
);
495 beg
= SDATA (filename
);
496 end
= p
= beg
+ SBYTES (filename
);
498 while (p
!= beg
&& !IS_DIRECTORY_SEP (p
[-1])
500 && p
[-1] != ':' && p
[-1] != ']' && p
[-1] != '>'
503 /* only recognise drive specifier at beginning */
505 /* handle the "/:d:foo" case correctly */
506 && (p
== beg
+ 2 || (p
== beg
+ 4 && IS_DIRECTORY_SEP (*beg
))))
511 return make_specified_string (p
, -1, end
- p
, STRING_MULTIBYTE (filename
));
514 DEFUN ("unhandled-file-name-directory", Funhandled_file_name_directory
,
515 Sunhandled_file_name_directory
, 1, 1, 0,
516 doc
: /* Return a directly usable directory name somehow associated with FILENAME.
517 A `directly usable' directory name is one that may be used without the
518 intervention of any file handler.
519 If FILENAME is a directly usable file itself, return
520 \(file-name-directory FILENAME).
521 The `call-process' and `start-process' functions use this function to
522 get a current directory to run processes in. */)
524 Lisp_Object filename
;
528 /* If the file name has special constructs in it,
529 call the corresponding file handler. */
530 handler
= Ffind_file_name_handler (filename
, Qunhandled_file_name_directory
);
532 return call2 (handler
, Qunhandled_file_name_directory
, filename
);
534 return Ffile_name_directory (filename
);
539 file_name_as_directory (out
, in
)
542 int size
= strlen (in
) - 1;
555 /* Is it already a directory string? */
556 if (in
[size
] == ':' || in
[size
] == ']' || in
[size
] == '>')
558 /* Is it a VMS directory file name? If so, hack VMS syntax. */
559 else if (! index (in
, '/')
560 && ((size
> 3 && ! strcmp (&in
[size
- 3], ".DIR"))
561 || (size
> 3 && ! strcmp (&in
[size
- 3], ".dir"))
562 || (size
> 5 && (! strncmp (&in
[size
- 5], ".DIR", 4)
563 || ! strncmp (&in
[size
- 5], ".dir", 4))
564 && (in
[size
- 1] == '.' || in
[size
- 1] == ';')
565 && in
[size
] == '1')))
567 register char *p
, *dot
;
571 dir:x.dir --> dir:[x]
572 dir:[x]y.dir --> dir:[x.y] */
574 while (p
!= in
&& *p
!= ':' && *p
!= '>' && *p
!= ']') p
--;
577 strncpy (out
, in
, p
- in
);
596 dot
= index (p
, '.');
599 /* blindly remove any extension */
600 size
= strlen (out
) + (dot
- p
);
601 strncat (out
, p
, dot
- p
);
612 /* For Unix syntax, Append a slash if necessary */
613 if (!IS_DIRECTORY_SEP (out
[size
]))
615 /* Cannot use DIRECTORY_SEP, which could have any value */
617 out
[size
+ 2] = '\0';
620 CORRECT_DIR_SEPS (out
);
626 DEFUN ("file-name-as-directory", Ffile_name_as_directory
,
627 Sfile_name_as_directory
, 1, 1, 0,
628 doc
: /* Return a string representing the file name FILE interpreted as a directory.
629 This operation exists because a directory is also a file, but its name as
630 a directory is different from its name as a file.
631 The result can be used as the value of `default-directory'
632 or passed as second argument to `expand-file-name'.
633 For a Unix-syntax file name, just appends a slash.
634 On VMS, converts \"[X]FOO.DIR\" to \"[X.FOO]\", etc. */)
645 /* If the file name has special constructs in it,
646 call the corresponding file handler. */
647 handler
= Ffind_file_name_handler (file
, Qfile_name_as_directory
);
649 return call2 (handler
, Qfile_name_as_directory
, file
);
651 buf
= (char *) alloca (SBYTES (file
) + 10);
652 file_name_as_directory (buf
, SDATA (file
));
653 return make_specified_string (buf
, -1, strlen (buf
),
654 STRING_MULTIBYTE (file
));
658 * Convert from directory name to filename.
660 * xyzzy:[mukesh.emacs] => xyzzy:[mukesh]emacs.dir.1
661 * xyzzy:[mukesh] => xyzzy:[000000]mukesh.dir.1
662 * On UNIX, it's simple: just make sure there isn't a terminating /
664 * Value is nonzero if the string output is different from the input.
668 directory_file_name (src
, dst
)
676 struct FAB fab
= cc$rms_fab
;
677 struct NAM nam
= cc$rms_nam
;
678 char esa
[NAM$C_MAXRSS
];
683 if (! index (src
, '/')
684 && (src
[slen
- 1] == ']'
685 || src
[slen
- 1] == ':'
686 || src
[slen
- 1] == '>'))
688 /* VMS style - convert [x.y.z] to [x.y]z, [x] to [000000]x */
690 fab
.fab$b_fns
= slen
;
691 fab
.fab$l_nam
= &nam
;
692 fab
.fab$l_fop
= FAB$M_NAM
;
695 nam
.nam$b_ess
= sizeof esa
;
696 nam
.nam$b_nop
|= NAM$M_SYNCHK
;
698 /* We call SYS$PARSE to handle such things as [--] for us. */
699 if (SYS$
PARSE (&fab
, 0, 0) == RMS$_NORMAL
)
701 slen
= nam
.nam$b_esl
;
702 if (esa
[slen
- 1] == ';' && esa
[slen
- 2] == '.')
707 if (src
[slen
- 1] != ']' && src
[slen
- 1] != '>')
709 /* what about when we have logical_name:???? */
710 if (src
[slen
- 1] == ':')
711 { /* Xlate logical name and see what we get */
712 ptr
= strcpy (dst
, src
); /* upper case for getenv */
715 if ('a' <= *ptr
&& *ptr
<= 'z')
719 dst
[slen
- 1] = 0; /* remove colon */
720 if (!(src
= egetenv (dst
)))
722 /* should we jump to the beginning of this procedure?
723 Good points: allows us to use logical names that xlate
725 Bad points: can be a problem if we just translated to a device
727 For now, I'll punt and always expect VMS names, and hope for
730 if (src
[slen
- 1] != ']' && src
[slen
- 1] != '>')
731 { /* no recursion here! */
737 { /* not a directory spec */
742 bracket
= src
[slen
- 1];
744 /* If bracket is ']' or '>', bracket - 2 is the corresponding
746 ptr
= index (src
, bracket
- 2);
748 { /* no opening bracket */
752 if (!(rptr
= rindex (src
, '.')))
755 strncpy (dst
, src
, slen
);
759 dst
[slen
++] = bracket
;
764 /* If we have the top-level of a rooted directory (i.e. xx:[000000]),
765 then translate the device and recurse. */
766 if (dst
[slen
- 1] == ':'
767 && dst
[slen
- 2] != ':' /* skip decnet nodes */
768 && strcmp (src
+ slen
, "[000000]") == 0)
770 dst
[slen
- 1] = '\0';
771 if ((ptr
= egetenv (dst
))
772 && (rlen
= strlen (ptr
) - 1) > 0
773 && (ptr
[rlen
] == ']' || ptr
[rlen
] == '>')
774 && ptr
[rlen
- 1] == '.')
776 char * buf
= (char *) alloca (strlen (ptr
) + 1);
780 return directory_file_name (buf
, dst
);
785 strcat (dst
, "[000000]");
789 rlen
= strlen (rptr
) - 1;
790 strncat (dst
, rptr
, rlen
);
791 dst
[slen
+ rlen
] = '\0';
792 strcat (dst
, ".DIR.1");
796 /* Process as Unix format: just remove any final slash.
797 But leave "/" unchanged; do not change it to "". */
800 /* Handle // as root for apollo's. */
801 if ((slen
> 2 && dst
[slen
- 1] == '/')
802 || (slen
> 1 && dst
[0] != '/' && dst
[slen
- 1] == '/'))
806 && IS_DIRECTORY_SEP (dst
[slen
- 1])
808 && !IS_ANY_SEP (dst
[slen
- 2])
814 CORRECT_DIR_SEPS (dst
);
819 DEFUN ("directory-file-name", Fdirectory_file_name
, Sdirectory_file_name
,
821 doc
: /* Returns the file name of the directory named DIRECTORY.
822 This is the name of the file that holds the data for the directory DIRECTORY.
823 This operation exists because a directory is also a file, but its name as
824 a directory is different from its name as a file.
825 In Unix-syntax, this function just removes the final slash.
826 On VMS, given a VMS-syntax directory name such as \"[X.Y]\",
827 it returns a file name such as \"[X]Y.DIR.1\". */)
829 Lisp_Object directory
;
834 CHECK_STRING (directory
);
836 if (NILP (directory
))
839 /* If the file name has special constructs in it,
840 call the corresponding file handler. */
841 handler
= Ffind_file_name_handler (directory
, Qdirectory_file_name
);
843 return call2 (handler
, Qdirectory_file_name
, directory
);
846 /* 20 extra chars is insufficient for VMS, since we might perform a
847 logical name translation. an equivalence string can be up to 255
848 chars long, so grab that much extra space... - sss */
849 buf
= (char *) alloca (SBYTES (directory
) + 20 + 255);
851 buf
= (char *) alloca (SBYTES (directory
) + 20);
853 directory_file_name (SDATA (directory
), buf
);
854 return make_specified_string (buf
, -1, strlen (buf
),
855 STRING_MULTIBYTE (directory
));
858 static char make_temp_name_tbl
[64] =
860 'A','B','C','D','E','F','G','H',
861 'I','J','K','L','M','N','O','P',
862 'Q','R','S','T','U','V','W','X',
863 'Y','Z','a','b','c','d','e','f',
864 'g','h','i','j','k','l','m','n',
865 'o','p','q','r','s','t','u','v',
866 'w','x','y','z','0','1','2','3',
867 '4','5','6','7','8','9','-','_'
870 static unsigned make_temp_name_count
, make_temp_name_count_initialized_p
;
872 /* Value is a temporary file name starting with PREFIX, a string.
874 The Emacs process number forms part of the result, so there is
875 no danger of generating a name being used by another process.
876 In addition, this function makes an attempt to choose a name
877 which has no existing file. To make this work, PREFIX should be
878 an absolute file name.
880 BASE64_P non-zero means add the pid as 3 characters in base64
881 encoding. In this case, 6 characters will be added to PREFIX to
882 form the file name. Otherwise, if Emacs is running on a system
883 with long file names, add the pid as a decimal number.
885 This function signals an error if no unique file name could be
889 make_temp_name (prefix
, base64_p
)
896 unsigned char *p
, *data
;
900 CHECK_STRING (prefix
);
902 /* VAL is created by adding 6 characters to PREFIX. The first
903 three are the PID of this process, in base 64, and the second
904 three are incremented if the file already exists. This ensures
905 262144 unique file names per PID per PREFIX. */
907 pid
= (int) getpid ();
911 pidbuf
[0] = make_temp_name_tbl
[pid
& 63], pid
>>= 6;
912 pidbuf
[1] = make_temp_name_tbl
[pid
& 63], pid
>>= 6;
913 pidbuf
[2] = make_temp_name_tbl
[pid
& 63], pid
>>= 6;
918 #ifdef HAVE_LONG_FILE_NAMES
919 sprintf (pidbuf
, "%d", pid
);
920 pidlen
= strlen (pidbuf
);
922 pidbuf
[0] = make_temp_name_tbl
[pid
& 63], pid
>>= 6;
923 pidbuf
[1] = make_temp_name_tbl
[pid
& 63], pid
>>= 6;
924 pidbuf
[2] = make_temp_name_tbl
[pid
& 63], pid
>>= 6;
929 len
= SBYTES (prefix
); clen
= SCHARS (prefix
);
930 val
= make_uninit_multibyte_string (clen
+ 3 + pidlen
, len
+ 3 + pidlen
);
931 if (!STRING_MULTIBYTE (prefix
))
932 STRING_SET_UNIBYTE (val
);
934 bcopy(SDATA (prefix
), data
, len
);
937 bcopy (pidbuf
, p
, pidlen
);
940 /* Here we try to minimize useless stat'ing when this function is
941 invoked many times successively with the same PREFIX. We achieve
942 this by initializing count to a random value, and incrementing it
945 We don't want make-temp-name to be called while dumping,
946 because then make_temp_name_count_initialized_p would get set
947 and then make_temp_name_count would not be set when Emacs starts. */
949 if (!make_temp_name_count_initialized_p
)
951 make_temp_name_count
= (unsigned) time (NULL
);
952 make_temp_name_count_initialized_p
= 1;
958 unsigned num
= make_temp_name_count
;
960 p
[0] = make_temp_name_tbl
[num
& 63], num
>>= 6;
961 p
[1] = make_temp_name_tbl
[num
& 63], num
>>= 6;
962 p
[2] = make_temp_name_tbl
[num
& 63], num
>>= 6;
964 /* Poor man's congruential RN generator. Replace with
965 ++make_temp_name_count for debugging. */
966 make_temp_name_count
+= 25229;
967 make_temp_name_count
%= 225307;
969 if (stat (data
, &ignored
) < 0)
971 /* We want to return only if errno is ENOENT. */
975 /* The error here is dubious, but there is little else we
976 can do. The alternatives are to return nil, which is
977 as bad as (and in many cases worse than) throwing the
978 error, or to ignore the error, which will likely result
979 in looping through 225307 stat's, which is not only
980 dog-slow, but also useless since it will fallback to
981 the errow below, anyway. */
982 report_file_error ("Cannot create temporary name for prefix",
983 Fcons (prefix
, Qnil
));
988 error ("Cannot create temporary name for prefix `%s'",
994 DEFUN ("make-temp-name", Fmake_temp_name
, Smake_temp_name
, 1, 1, 0,
995 doc
: /* Generate temporary file name (string) starting with PREFIX (a string).
996 The Emacs process number forms part of the result,
997 so there is no danger of generating a name being used by another process.
999 In addition, this function makes an attempt to choose a name
1000 which has no existing file. To make this work,
1001 PREFIX should be an absolute file name.
1003 There is a race condition between calling `make-temp-name' and creating the
1004 file which opens all kinds of security holes. For that reason, you should
1005 probably use `make-temp-file' instead, except in three circumstances:
1007 * If you are creating the file in the user's home directory.
1008 * If you are creating a directory rather than an ordinary file.
1009 * If you are taking special precautions as `make-temp-file' does. */)
1013 return make_temp_name (prefix
, 0);
1018 DEFUN ("expand-file-name", Fexpand_file_name
, Sexpand_file_name
, 1, 2, 0,
1019 doc
: /* Convert filename NAME to absolute, and canonicalize it.
1020 Second arg DEFAULT-DIRECTORY is directory to start with if NAME is relative
1021 (does not start with slash); if DEFAULT-DIRECTORY is nil or missing,
1022 the current buffer's value of default-directory is used.
1023 File name components that are `.' are removed, and
1024 so are file name components followed by `..', along with the `..' itself;
1025 note that these simplifications are done without checking the resulting
1026 file names in the file system.
1027 An initial `~/' expands to your home directory.
1028 An initial `~USER/' expands to USER's home directory.
1029 See also the function `substitute-in-file-name'. */)
1030 (name
, default_directory
)
1031 Lisp_Object name
, default_directory
;
1035 register unsigned char *newdir
, *p
, *o
;
1037 unsigned char *target
;
1040 unsigned char * colon
= 0;
1041 unsigned char * close
= 0;
1042 unsigned char * slash
= 0;
1043 unsigned char * brack
= 0;
1044 int lbrack
= 0, rbrack
= 0;
1049 int collapse_newdir
= 1;
1053 Lisp_Object handler
, result
;
1055 CHECK_STRING (name
);
1057 /* If the file name has special constructs in it,
1058 call the corresponding file handler. */
1059 handler
= Ffind_file_name_handler (name
, Qexpand_file_name
);
1060 if (!NILP (handler
))
1061 return call3 (handler
, Qexpand_file_name
, name
, default_directory
);
1063 /* Use the buffer's default-directory if DEFAULT_DIRECTORY is omitted. */
1064 if (NILP (default_directory
))
1065 default_directory
= current_buffer
->directory
;
1066 if (! STRINGP (default_directory
))
1069 /* "/" is not considered a root directory on DOS_NT, so using "/"
1070 here causes an infinite recursion in, e.g., the following:
1072 (let (default-directory)
1073 (expand-file-name "a"))
1075 To avoid this, we set default_directory to the root of the
1077 extern char *emacs_root_dir (void);
1079 default_directory
= build_string (emacs_root_dir ());
1081 default_directory
= build_string ("/");
1085 if (!NILP (default_directory
))
1087 handler
= Ffind_file_name_handler (default_directory
, Qexpand_file_name
);
1088 if (!NILP (handler
))
1089 return call3 (handler
, Qexpand_file_name
, name
, default_directory
);
1092 o
= SDATA (default_directory
);
1094 /* Make sure DEFAULT_DIRECTORY is properly expanded.
1095 It would be better to do this down below where we actually use
1096 default_directory. Unfortunately, calling Fexpand_file_name recursively
1097 could invoke GC, and the strings might be relocated. This would
1098 be annoying because we have pointers into strings lying around
1099 that would need adjusting, and people would add new pointers to
1100 the code and forget to adjust them, resulting in intermittent bugs.
1101 Putting this call here avoids all that crud.
1103 The EQ test avoids infinite recursion. */
1104 if (! NILP (default_directory
) && !EQ (default_directory
, name
)
1105 /* Save time in some common cases - as long as default_directory
1106 is not relative, it can be canonicalized with name below (if it
1107 is needed at all) without requiring it to be expanded now. */
1109 /* Detect MSDOS file names with drive specifiers. */
1110 && ! (IS_DRIVE (o
[0]) && IS_DEVICE_SEP (o
[1]) && IS_DIRECTORY_SEP (o
[2]))
1112 /* Detect Windows file names in UNC format. */
1113 && ! (IS_DIRECTORY_SEP (o
[0]) && IS_DIRECTORY_SEP (o
[1]))
1115 #else /* not DOS_NT */
1116 /* Detect Unix absolute file names (/... alone is not absolute on
1118 && ! (IS_DIRECTORY_SEP (o
[0]))
1119 #endif /* not DOS_NT */
1122 struct gcpro gcpro1
;
1125 default_directory
= Fexpand_file_name (default_directory
, Qnil
);
1129 name
= FILE_SYSTEM_CASE (name
);
1133 /* We will force directory separators to be either all \ or /, so make
1134 a local copy to modify, even if there ends up being no change. */
1135 nm
= strcpy (alloca (strlen (nm
) + 1), nm
);
1137 /* Note if special escape prefix is present, but remove for now. */
1138 if (nm
[0] == '/' && nm
[1] == ':')
1144 /* Find and remove drive specifier if present; this makes nm absolute
1145 even if the rest of the name appears to be relative. Only look for
1146 drive specifier at the beginning. */
1147 if (IS_DRIVE (nm
[0]) && IS_DEVICE_SEP (nm
[1]))
1154 /* If we see "c://somedir", we want to strip the first slash after the
1155 colon when stripping the drive letter. Otherwise, this expands to
1157 if (drive
&& IS_DIRECTORY_SEP (nm
[0]) && IS_DIRECTORY_SEP (nm
[1]))
1159 #endif /* WINDOWSNT */
1163 /* Discard any previous drive specifier if nm is now in UNC format. */
1164 if (IS_DIRECTORY_SEP (nm
[0]) && IS_DIRECTORY_SEP (nm
[1]))
1170 /* If nm is absolute, look for `/./' or `/../' or `//''sequences; if
1171 none are found, we can probably return right away. We will avoid
1172 allocating a new string if name is already fully expanded. */
1174 IS_DIRECTORY_SEP (nm
[0])
1176 && drive
&& !is_escaped
1179 && (drive
|| IS_DIRECTORY_SEP (nm
[1])) && !is_escaped
1186 /* If it turns out that the filename we want to return is just a
1187 suffix of FILENAME, we don't need to go through and edit
1188 things; we just need to construct a new string using data
1189 starting at the middle of FILENAME. If we set lose to a
1190 non-zero value, that means we've discovered that we can't do
1197 /* Since we know the name is absolute, we can assume that each
1198 element starts with a "/". */
1200 /* "." and ".." are hairy. */
1201 if (IS_DIRECTORY_SEP (p
[0])
1203 && (IS_DIRECTORY_SEP (p
[2])
1205 || (p
[2] == '.' && (IS_DIRECTORY_SEP (p
[3])
1208 /* We want to replace multiple `/' in a row with a single
1211 && IS_DIRECTORY_SEP (p
[0])
1212 && IS_DIRECTORY_SEP (p
[1]))
1219 /* if dev:[dir]/, move nm to / */
1220 if (!slash
&& p
> nm
&& (brack
|| colon
)) {
1221 nm
= (brack
? brack
+ 1 : colon
+ 1);
1222 lbrack
= rbrack
= 0;
1229 #ifdef NO_HYPHENS_IN_FILENAMES
1230 if (lbrack
== rbrack
)
1232 /* Avoid clobbering negative version numbers. */
1237 #endif /* NO_HYPHENS_IN_FILENAMES */
1238 if (lbrack
> rbrack
&&
1239 ((p
[-1] == '.' || p
[-1] == '[' || p
[-1] == '<') &&
1240 (p
[1] == '.' || p
[1] == ']' || p
[1] == '>')))
1242 #ifdef NO_HYPHENS_IN_FILENAMES
1245 #endif /* NO_HYPHENS_IN_FILENAMES */
1246 /* count open brackets, reset close bracket pointer */
1247 if (p
[0] == '[' || p
[0] == '<')
1248 lbrack
++, brack
= 0;
1249 /* count close brackets, set close bracket pointer */
1250 if (p
[0] == ']' || p
[0] == '>')
1251 rbrack
++, brack
= p
;
1252 /* detect ][ or >< */
1253 if ((p
[0] == ']' || p
[0] == '>') && (p
[1] == '[' || p
[1] == '<'))
1255 if ((p
[0] == ':' || p
[0] == ']' || p
[0] == '>') && p
[1] == '~')
1256 nm
= p
+ 1, lose
= 1;
1257 if (p
[0] == ':' && (colon
|| slash
))
1258 /* if dev1:[dir]dev2:, move nm to dev2: */
1264 /* if /name/dev:, move nm to dev: */
1267 /* if node::dev:, move colon following dev */
1268 else if (colon
&& colon
[-1] == ':')
1270 /* if dev1:dev2:, move nm to dev2: */
1271 else if (colon
&& colon
[-1] != ':')
1276 if (p
[0] == ':' && !colon
)
1282 if (lbrack
== rbrack
)
1285 else if (p
[0] == '.')
1293 if (index (nm
, '/'))
1295 nm
= sys_translate_unix (nm
);
1296 return make_specified_string (nm
, -1, strlen (nm
),
1297 STRING_MULTIBYTE (name
));
1301 /* Make sure directories are all separated with / or \ as
1302 desired, but avoid allocation of a new string when not
1304 CORRECT_DIR_SEPS (nm
);
1306 if (IS_DIRECTORY_SEP (nm
[1]))
1308 if (strcmp (nm
, SDATA (name
)) != 0)
1309 name
= make_specified_string (nm
, -1, strlen (nm
),
1310 STRING_MULTIBYTE (name
));
1314 /* drive must be set, so this is okay */
1315 if (strcmp (nm
- 2, SDATA (name
)) != 0)
1319 name
= make_specified_string (nm
, -1, p
- nm
,
1320 STRING_MULTIBYTE (name
));
1321 temp
[0] = DRIVE_LETTER (drive
);
1322 name
= concat2 (build_string (temp
), name
);
1325 #else /* not DOS_NT */
1326 if (nm
== SDATA (name
))
1328 return make_specified_string (nm
, -1, strlen (nm
),
1329 STRING_MULTIBYTE (name
));
1330 #endif /* not DOS_NT */
1334 /* At this point, nm might or might not be an absolute file name. We
1335 need to expand ~ or ~user if present, otherwise prefix nm with
1336 default_directory if nm is not absolute, and finally collapse /./
1337 and /foo/../ sequences.
1339 We set newdir to be the appropriate prefix if one is needed:
1340 - the relevant user directory if nm starts with ~ or ~user
1341 - the specified drive's working dir (DOS/NT only) if nm does not
1343 - the value of default_directory.
1345 Note that these prefixes are not guaranteed to be absolute (except
1346 for the working dir of a drive). Therefore, to ensure we always
1347 return an absolute name, if the final prefix is not absolute we
1348 append it to the current working directory. */
1352 if (nm
[0] == '~') /* prefix ~ */
1354 if (IS_DIRECTORY_SEP (nm
[1])
1358 || nm
[1] == 0) /* ~ by itself */
1360 if (!(newdir
= (unsigned char *) egetenv ("HOME")))
1361 newdir
= (unsigned char *) "";
1364 collapse_newdir
= 0;
1367 nm
++; /* Don't leave the slash in nm. */
1370 else /* ~user/filename */
1372 for (p
= nm
; *p
&& (!IS_DIRECTORY_SEP (*p
)
1377 o
= (unsigned char *) alloca (p
- nm
+ 1);
1378 bcopy ((char *) nm
, o
, p
- nm
);
1381 pw
= (struct passwd
*) getpwnam (o
+ 1);
1384 newdir
= (unsigned char *) pw
-> pw_dir
;
1386 nm
= p
+ 1; /* skip the terminator */
1390 collapse_newdir
= 0;
1395 /* If we don't find a user of that name, leave the name
1396 unchanged; don't move nm forward to p. */
1401 /* On DOS and Windows, nm is absolute if a drive name was specified;
1402 use the drive's current directory as the prefix if needed. */
1403 if (!newdir
&& drive
)
1405 /* Get default directory if needed to make nm absolute. */
1406 if (!IS_DIRECTORY_SEP (nm
[0]))
1408 newdir
= alloca (MAXPATHLEN
+ 1);
1409 if (!getdefdir (toupper (drive
) - 'A' + 1, newdir
))
1414 /* Either nm starts with /, or drive isn't mounted. */
1415 newdir
= alloca (4);
1416 newdir
[0] = DRIVE_LETTER (drive
);
1424 /* Finally, if no prefix has been specified and nm is not absolute,
1425 then it must be expanded relative to default_directory. */
1429 /* /... alone is not absolute on DOS and Windows. */
1430 && !IS_DIRECTORY_SEP (nm
[0])
1433 && !(IS_DIRECTORY_SEP (nm
[0]) && IS_DIRECTORY_SEP (nm
[1]))
1440 newdir
= SDATA (default_directory
);
1442 /* Note if special escape prefix is present, but remove for now. */
1443 if (newdir
[0] == '/' && newdir
[1] == ':')
1454 /* First ensure newdir is an absolute name. */
1456 /* Detect MSDOS file names with drive specifiers. */
1457 ! (IS_DRIVE (newdir
[0])
1458 && IS_DEVICE_SEP (newdir
[1]) && IS_DIRECTORY_SEP (newdir
[2]))
1460 /* Detect Windows file names in UNC format. */
1461 && ! (IS_DIRECTORY_SEP (newdir
[0]) && IS_DIRECTORY_SEP (newdir
[1]))
1465 /* Effectively, let newdir be (expand-file-name newdir cwd).
1466 Because of the admonition against calling expand-file-name
1467 when we have pointers into lisp strings, we accomplish this
1468 indirectly by prepending newdir to nm if necessary, and using
1469 cwd (or the wd of newdir's drive) as the new newdir. */
1471 if (IS_DRIVE (newdir
[0]) && newdir
[1] == ':')
1476 if (!IS_DIRECTORY_SEP (nm
[0]))
1478 char * tmp
= alloca (strlen (newdir
) + strlen (nm
) + 2);
1479 file_name_as_directory (tmp
, newdir
);
1483 newdir
= alloca (MAXPATHLEN
+ 1);
1486 if (!getdefdir (toupper (drive
) - 'A' + 1, newdir
))
1493 /* Strip off drive name from prefix, if present. */
1494 if (IS_DRIVE (newdir
[0]) && newdir
[1] == ':')
1500 /* Keep only a prefix from newdir if nm starts with slash
1501 (//server/share for UNC, nothing otherwise). */
1502 if (IS_DIRECTORY_SEP (nm
[0]) && collapse_newdir
)
1505 if (IS_DIRECTORY_SEP (newdir
[0]) && IS_DIRECTORY_SEP (newdir
[1]))
1507 newdir
= strcpy (alloca (strlen (newdir
) + 1), newdir
);
1509 while (*p
&& !IS_DIRECTORY_SEP (*p
)) p
++;
1511 while (*p
&& !IS_DIRECTORY_SEP (*p
)) p
++;
1523 /* Get rid of any slash at the end of newdir, unless newdir is
1524 just / or // (an incomplete UNC name). */
1525 length
= strlen (newdir
);
1526 if (length
> 1 && IS_DIRECTORY_SEP (newdir
[length
- 1])
1528 && !(length
== 2 && IS_DIRECTORY_SEP (newdir
[0]))
1532 unsigned char *temp
= (unsigned char *) alloca (length
);
1533 bcopy (newdir
, temp
, length
- 1);
1534 temp
[length
- 1] = 0;
1542 /* Now concatenate the directory and name to new space in the stack frame */
1543 tlen
+= strlen (nm
) + 1;
1545 /* Reserve space for drive specifier and escape prefix, since either
1546 or both may need to be inserted. (The Microsoft x86 compiler
1547 produces incorrect code if the following two lines are combined.) */
1548 target
= (unsigned char *) alloca (tlen
+ 4);
1550 #else /* not DOS_NT */
1551 target
= (unsigned char *) alloca (tlen
);
1552 #endif /* not DOS_NT */
1558 if (nm
[0] == 0 || IS_DIRECTORY_SEP (nm
[0]))
1561 /* If newdir is effectively "C:/", then the drive letter will have
1562 been stripped and newdir will be "/". Concatenating with an
1563 absolute directory in nm produces "//", which will then be
1564 incorrectly treated as a network share. Ignore newdir in
1565 this case (keeping the drive letter). */
1566 if (!(drive
&& nm
[0] && IS_DIRECTORY_SEP (newdir
[0])
1567 && newdir
[1] == '\0'))
1569 strcpy (target
, newdir
);
1573 file_name_as_directory (target
, newdir
);
1576 strcat (target
, nm
);
1578 if (index (target
, '/'))
1579 strcpy (target
, sys_translate_unix (target
));
1582 /* ASSERT (IS_DIRECTORY_SEP (target[0])) if not VMS */
1584 /* Now canonicalize by removing `//', `/.' and `/foo/..' if they
1593 if (*p
!= ']' && *p
!= '>' && *p
!= '-')
1599 else if ((p
[0] == ']' || p
[0] == '>') && p
[0] == p
[1] + 2)
1600 /* brackets are offset from each other by 2 */
1603 if (*p
!= '.' && *p
!= '-' && o
[-1] != '.')
1604 /* convert [foo][bar] to [bar] */
1605 while (o
[-1] != '[' && o
[-1] != '<')
1607 else if (*p
== '-' && *o
!= '.')
1610 else if (p
[0] == '-' && o
[-1] == '.' &&
1611 (p
[1] == '.' || p
[1] == ']' || p
[1] == '>'))
1612 /* flush .foo.- ; leave - if stopped by '[' or '<' */
1616 while (o
[-1] != '.' && o
[-1] != '[' && o
[-1] != '<');
1617 if (p
[1] == '.') /* foo.-.bar ==> bar. */
1619 else if (o
[-1] == '.') /* '.foo.-]' ==> ']' */
1621 /* else [foo.-] ==> [-] */
1625 #ifdef NO_HYPHENS_IN_FILENAMES
1627 o
[-1] != '[' && o
[-1] != '<' && o
[-1] != '.' &&
1628 p
[1] != ']' && p
[1] != '>' && p
[1] != '.')
1630 #endif /* NO_HYPHENS_IN_FILENAMES */
1634 if (!IS_DIRECTORY_SEP (*p
))
1638 else if (IS_DIRECTORY_SEP (p
[0])
1640 && (IS_DIRECTORY_SEP (p
[2])
1643 /* If "/." is the entire filename, keep the "/". Otherwise,
1644 just delete the whole "/.". */
1645 if (o
== target
&& p
[2] == '\0')
1649 else if (IS_DIRECTORY_SEP (p
[0]) && p
[1] == '.' && p
[2] == '.'
1650 /* `/../' is the "superroot" on certain file systems. */
1652 && (IS_DIRECTORY_SEP (p
[3]) || p
[3] == 0))
1654 while (o
!= target
&& (--o
) && !IS_DIRECTORY_SEP (*o
))
1656 /* Keep initial / only if this is the whole name. */
1657 if (o
== target
&& IS_ANY_SEP (*o
) && p
[3] == 0)
1662 && IS_DIRECTORY_SEP (p
[0]) && IS_DIRECTORY_SEP (p
[1]))
1664 /* Collapse multiple `/' in a row. */
1666 while (IS_DIRECTORY_SEP (*p
))
1673 #endif /* not VMS */
1677 /* At last, set drive name. */
1679 /* Except for network file name. */
1680 if (!(IS_DIRECTORY_SEP (target
[0]) && IS_DIRECTORY_SEP (target
[1])))
1681 #endif /* WINDOWSNT */
1683 if (!drive
) abort ();
1685 target
[0] = DRIVE_LETTER (drive
);
1688 /* Reinsert the escape prefix if required. */
1695 CORRECT_DIR_SEPS (target
);
1698 result
= make_specified_string (target
, -1, o
- target
,
1699 STRING_MULTIBYTE (name
));
1701 /* Again look to see if the file name has special constructs in it
1702 and perhaps call the corresponding file handler. This is needed
1703 for filenames such as "/foo/../user@host:/bar/../baz". Expanding
1704 the ".." component gives us "/user@host:/bar/../baz" which needs
1705 to be expanded again. */
1706 handler
= Ffind_file_name_handler (result
, Qexpand_file_name
);
1707 if (!NILP (handler
))
1708 return call3 (handler
, Qexpand_file_name
, result
, default_directory
);
1714 /* PLEASE DO NOT DELETE THIS COMMENTED-OUT VERSION!
1715 This is the old version of expand-file-name, before it was thoroughly
1716 rewritten for Emacs 10.31. We leave this version here commented-out,
1717 because the code is very complex and likely to have subtle bugs. If
1718 bugs _are_ found, it might be of interest to look at the old code and
1719 see what did it do in the relevant situation.
1721 Don't remove this code: it's true that it will be accessible via CVS,
1722 but a few years from deletion, people will forget it is there. */
1724 /* Changed this DEFUN to a DEAFUN, so as not to confuse `make-docfile'. */
1725 DEAFUN ("expand-file-name", Fexpand_file_name
, Sexpand_file_name
, 1, 2, 0,
1726 "Convert FILENAME to absolute, and canonicalize it.\n\
1727 Second arg DEFAULT is directory to start with if FILENAME is relative\n\
1728 (does not start with slash); if DEFAULT is nil or missing,\n\
1729 the current buffer's value of default-directory is used.\n\
1730 Filenames containing `.' or `..' as components are simplified;\n\
1731 initial `~/' expands to your home directory.\n\
1732 See also the function `substitute-in-file-name'.")
1734 Lisp_Object name
, defalt
;
1738 register unsigned char *newdir
, *p
, *o
;
1740 unsigned char *target
;
1744 unsigned char * colon
= 0;
1745 unsigned char * close
= 0;
1746 unsigned char * slash
= 0;
1747 unsigned char * brack
= 0;
1748 int lbrack
= 0, rbrack
= 0;
1752 CHECK_STRING (name
);
1755 /* Filenames on VMS are always upper case. */
1756 name
= Fupcase (name
);
1761 /* If nm is absolute, flush ...// and detect /./ and /../.
1762 If no /./ or /../ we can return right away. */
1774 if (p
[0] == '/' && p
[1] == '/'
1776 /* // at start of filename is meaningful on Apollo system. */
1781 if (p
[0] == '/' && p
[1] == '~')
1782 nm
= p
+ 1, lose
= 1;
1783 if (p
[0] == '/' && p
[1] == '.'
1784 && (p
[2] == '/' || p
[2] == 0
1785 || (p
[2] == '.' && (p
[3] == '/' || p
[3] == 0))))
1791 /* if dev:[dir]/, move nm to / */
1792 if (!slash
&& p
> nm
&& (brack
|| colon
)) {
1793 nm
= (brack
? brack
+ 1 : colon
+ 1);
1794 lbrack
= rbrack
= 0;
1802 /* VMS pre V4.4,convert '-'s in filenames. */
1803 if (lbrack
== rbrack
)
1805 if (dots
< 2) /* this is to allow negative version numbers */
1810 if (lbrack
> rbrack
&&
1811 ((p
[-1] == '.' || p
[-1] == '[' || p
[-1] == '<') &&
1812 (p
[1] == '.' || p
[1] == ']' || p
[1] == '>')))
1818 /* count open brackets, reset close bracket pointer */
1819 if (p
[0] == '[' || p
[0] == '<')
1820 lbrack
++, brack
= 0;
1821 /* count close brackets, set close bracket pointer */
1822 if (p
[0] == ']' || p
[0] == '>')
1823 rbrack
++, brack
= p
;
1824 /* detect ][ or >< */
1825 if ((p
[0] == ']' || p
[0] == '>') && (p
[1] == '[' || p
[1] == '<'))
1827 if ((p
[0] == ':' || p
[0] == ']' || p
[0] == '>') && p
[1] == '~')
1828 nm
= p
+ 1, lose
= 1;
1829 if (p
[0] == ':' && (colon
|| slash
))
1830 /* if dev1:[dir]dev2:, move nm to dev2: */
1836 /* If /name/dev:, move nm to dev: */
1839 /* If node::dev:, move colon following dev */
1840 else if (colon
&& colon
[-1] == ':')
1842 /* If dev1:dev2:, move nm to dev2: */
1843 else if (colon
&& colon
[-1] != ':')
1848 if (p
[0] == ':' && !colon
)
1854 if (lbrack
== rbrack
)
1857 else if (p
[0] == '.')
1865 if (index (nm
, '/'))
1866 return build_string (sys_translate_unix (nm
));
1868 if (nm
== SDATA (name
))
1870 return build_string (nm
);
1874 /* Now determine directory to start with and put it in NEWDIR */
1878 if (nm
[0] == '~') /* prefix ~ */
1883 || nm
[1] == 0)/* ~/filename */
1885 if (!(newdir
= (unsigned char *) egetenv ("HOME")))
1886 newdir
= (unsigned char *) "";
1889 nm
++; /* Don't leave the slash in nm. */
1892 else /* ~user/filename */
1894 /* Get past ~ to user */
1895 unsigned char *user
= nm
+ 1;
1896 /* Find end of name. */
1897 unsigned char *ptr
= (unsigned char *) index (user
, '/');
1898 int len
= ptr
? ptr
- user
: strlen (user
);
1900 unsigned char *ptr1
= index (user
, ':');
1901 if (ptr1
!= 0 && ptr1
- user
< len
)
1904 /* Copy the user name into temp storage. */
1905 o
= (unsigned char *) alloca (len
+ 1);
1906 bcopy ((char *) user
, o
, len
);
1909 /* Look up the user name. */
1910 pw
= (struct passwd
*) getpwnam (o
+ 1);
1912 error ("\"%s\" isn't a registered user", o
+ 1);
1914 newdir
= (unsigned char *) pw
->pw_dir
;
1916 /* Discard the user name from NM. */
1923 #endif /* not VMS */
1927 defalt
= current_buffer
->directory
;
1928 CHECK_STRING (defalt
);
1929 newdir
= SDATA (defalt
);
1932 /* Now concatenate the directory and name to new space in the stack frame */
1934 tlen
= (newdir
? strlen (newdir
) + 1 : 0) + strlen (nm
) + 1;
1935 target
= (unsigned char *) alloca (tlen
);
1941 if (nm
[0] == 0 || nm
[0] == '/')
1942 strcpy (target
, newdir
);
1945 file_name_as_directory (target
, newdir
);
1948 strcat (target
, nm
);
1950 if (index (target
, '/'))
1951 strcpy (target
, sys_translate_unix (target
));
1954 /* Now canonicalize by removing /. and /foo/.. if they appear */
1962 if (*p
!= ']' && *p
!= '>' && *p
!= '-')
1968 else if ((p
[0] == ']' || p
[0] == '>') && p
[0] == p
[1] + 2)
1969 /* brackets are offset from each other by 2 */
1972 if (*p
!= '.' && *p
!= '-' && o
[-1] != '.')
1973 /* convert [foo][bar] to [bar] */
1974 while (o
[-1] != '[' && o
[-1] != '<')
1976 else if (*p
== '-' && *o
!= '.')
1979 else if (p
[0] == '-' && o
[-1] == '.' &&
1980 (p
[1] == '.' || p
[1] == ']' || p
[1] == '>'))
1981 /* flush .foo.- ; leave - if stopped by '[' or '<' */
1985 while (o
[-1] != '.' && o
[-1] != '[' && o
[-1] != '<');
1986 if (p
[1] == '.') /* foo.-.bar ==> bar. */
1988 else if (o
[-1] == '.') /* '.foo.-]' ==> ']' */
1990 /* else [foo.-] ==> [-] */
1996 o
[-1] != '[' && o
[-1] != '<' && o
[-1] != '.' &&
1997 p
[1] != ']' && p
[1] != '>' && p
[1] != '.')
2007 else if (!strncmp (p
, "//", 2)
2009 /* // at start of filename is meaningful in Apollo system. */
2017 else if (p
[0] == '/' && p
[1] == '.' &&
2018 (p
[2] == '/' || p
[2] == 0))
2020 else if (!strncmp (p
, "/..", 3)
2021 /* `/../' is the "superroot" on certain file systems. */
2023 && (p
[3] == '/' || p
[3] == 0))
2025 while (o
!= target
&& *--o
!= '/')
2028 if (o
== target
+ 1 && o
[-1] == '/' && o
[0] == '/')
2032 if (o
== target
&& *o
== '/')
2040 #endif /* not VMS */
2043 return make_string (target
, o
- target
);
2047 DEFUN ("substitute-in-file-name", Fsubstitute_in_file_name
,
2048 Ssubstitute_in_file_name
, 1, 1, 0,
2049 doc
: /* Substitute environment variables referred to in FILENAME.
2050 `$FOO' where FOO is an environment variable name means to substitute
2051 the value of that variable. The variable name should be terminated
2052 with a character not a letter, digit or underscore; otherwise, enclose
2053 the entire variable name in braces.
2054 If `/~' appears, all of FILENAME through that `/' is discarded.
2056 On VMS, `$' substitution is not done; this function does little and only
2057 duplicates what `expand-file-name' does. */)
2059 Lisp_Object filename
;
2063 register unsigned char *s
, *p
, *o
, *x
, *endp
;
2064 unsigned char *target
= NULL
;
2066 int substituted
= 0;
2069 Lisp_Object handler
;
2071 CHECK_STRING (filename
);
2073 /* If the file name has special constructs in it,
2074 call the corresponding file handler. */
2075 handler
= Ffind_file_name_handler (filename
, Qsubstitute_in_file_name
);
2076 if (!NILP (handler
))
2077 return call2 (handler
, Qsubstitute_in_file_name
, filename
);
2079 nm
= SDATA (filename
);
2081 nm
= strcpy (alloca (strlen (nm
) + 1), nm
);
2082 CORRECT_DIR_SEPS (nm
);
2083 substituted
= (strcmp (nm
, SDATA (filename
)) != 0);
2085 endp
= nm
+ SBYTES (filename
);
2087 /* If /~ or // appears, discard everything through first slash. */
2089 for (p
= nm
; p
!= endp
; p
++)
2092 #if defined (APOLLO) || defined (WINDOWSNT) || defined(CYGWIN)
2093 /* // at start of file name is meaningful in Apollo,
2094 WindowsNT and Cygwin systems. */
2095 || (IS_DIRECTORY_SEP (p
[0]) && p
- 1 != nm
)
2096 #else /* not (APOLLO || WINDOWSNT || CYGWIN) */
2097 || IS_DIRECTORY_SEP (p
[0])
2098 #endif /* not (APOLLO || WINDOWSNT || CYGWIN) */
2103 || p
[-1] == ':' || p
[-1] == ']' || p
[-1] == '>'
2105 || IS_DIRECTORY_SEP (p
[-1])))
2107 for (s
= p
; *s
&& (!IS_DIRECTORY_SEP (*s
)
2112 if (p
[0] == '~' && s
> p
+ 1) /* we've got "/~something/" */
2114 o
= (unsigned char *) alloca (s
- p
+ 1);
2115 bcopy ((char *) p
, o
, s
- p
);
2118 pw
= (struct passwd
*) getpwnam (o
+ 1);
2120 /* If we have ~/ or ~user and `user' exists, discard
2121 everything up to ~. But if `user' does not exist, leave
2122 ~user alone, it might be a literal file name. */
2123 if (IS_DIRECTORY_SEP (p
[0]) || s
== p
+ 1 || pw
)
2130 /* see comment in expand-file-name about drive specifiers */
2131 else if (IS_DRIVE (p
[0]) && p
[1] == ':'
2132 && p
> nm
&& IS_DIRECTORY_SEP (p
[-1]))
2141 return make_specified_string (nm
, -1, strlen (nm
),
2142 STRING_MULTIBYTE (filename
));
2145 /* See if any variables are substituted into the string
2146 and find the total length of their values in `total' */
2148 for (p
= nm
; p
!= endp
;)
2158 /* "$$" means a single "$" */
2167 while (p
!= endp
&& *p
!= '}') p
++;
2168 if (*p
!= '}') goto missingclose
;
2174 while (p
!= endp
&& (isalnum (*p
) || *p
== '_')) p
++;
2178 /* Copy out the variable name */
2179 target
= (unsigned char *) alloca (s
- o
+ 1);
2180 strncpy (target
, o
, s
- o
);
2183 strupr (target
); /* $home == $HOME etc. */
2186 /* Get variable value */
2187 o
= (unsigned char *) egetenv (target
);
2190 total
+= strlen (o
);
2200 /* If substitution required, recopy the string and do it */
2201 /* Make space in stack frame for the new copy */
2202 xnm
= (unsigned char *) alloca (SBYTES (filename
) + total
+ 1);
2205 /* Copy the rest of the name through, replacing $ constructs with values */
2222 while (p
!= endp
&& *p
!= '}') p
++;
2223 if (*p
!= '}') goto missingclose
;
2229 while (p
!= endp
&& (isalnum (*p
) || *p
== '_')) p
++;
2233 /* Copy out the variable name */
2234 target
= (unsigned char *) alloca (s
- o
+ 1);
2235 strncpy (target
, o
, s
- o
);
2238 strupr (target
); /* $home == $HOME etc. */
2241 /* Get variable value */
2242 o
= (unsigned char *) egetenv (target
);
2246 strcpy (x
, target
); x
+= strlen (target
);
2248 else if (STRING_MULTIBYTE (filename
))
2250 /* If the original string is multibyte,
2251 convert what we substitute into multibyte. */
2255 c
= unibyte_char_to_multibyte (c
);
2256 x
+= CHAR_STRING (c
, x
);
2268 /* If /~ or // appears, discard everything through first slash. */
2270 for (p
= xnm
; p
!= x
; p
++)
2272 #if defined (APOLLO) || defined (WINDOWSNT) || defined(CYGWIN)
2273 || (IS_DIRECTORY_SEP (p
[0]) && p
- 1 != xnm
)
2274 #else /* not (APOLLO || WINDOWSNT || CYGWIN) */
2275 || IS_DIRECTORY_SEP (p
[0])
2276 #endif /* not (APOLLO || WINDOWSNT || CYGWIN) */
2278 && p
!= xnm
&& IS_DIRECTORY_SEP (p
[-1]))
2281 else if (IS_DRIVE (p
[0]) && p
[1] == ':'
2282 && p
> xnm
&& IS_DIRECTORY_SEP (p
[-1]))
2286 return make_specified_string (xnm
, -1, x
- xnm
, STRING_MULTIBYTE (filename
));
2289 error ("Bad format environment-variable substitution");
2291 error ("Missing \"}\" in environment-variable substitution");
2293 error ("Substituting nonexistent environment variable \"%s\"", target
);
2296 #endif /* not VMS */
2300 /* A slightly faster and more convenient way to get
2301 (directory-file-name (expand-file-name FOO)). */
2304 expand_and_dir_to_file (filename
, defdir
)
2305 Lisp_Object filename
, defdir
;
2307 register Lisp_Object absname
;
2309 absname
= Fexpand_file_name (filename
, defdir
);
2312 register int c
= SREF (absname
, SBYTES (absname
) - 1);
2313 if (c
== ':' || c
== ']' || c
== '>')
2314 absname
= Fdirectory_file_name (absname
);
2317 /* Remove final slash, if any (unless this is the root dir).
2318 stat behaves differently depending! */
2319 if (SCHARS (absname
) > 1
2320 && IS_DIRECTORY_SEP (SREF (absname
, SBYTES (absname
) - 1))
2321 && !IS_DEVICE_SEP (SREF (absname
, SBYTES (absname
)-2)))
2322 /* We cannot take shortcuts; they might be wrong for magic file names. */
2323 absname
= Fdirectory_file_name (absname
);
2328 /* Signal an error if the file ABSNAME already exists.
2329 If INTERACTIVE is nonzero, ask the user whether to proceed,
2330 and bypass the error if the user says to go ahead.
2331 QUERYSTRING is a name for the action that is being considered
2334 *STATPTR is used to store the stat information if the file exists.
2335 If the file does not exist, STATPTR->st_mode is set to 0.
2336 If STATPTR is null, we don't store into it.
2338 If QUICK is nonzero, we ask for y or n, not yes or no. */
2341 barf_or_query_if_file_exists (absname
, querystring
, interactive
, statptr
, quick
)
2342 Lisp_Object absname
;
2343 unsigned char *querystring
;
2345 struct stat
*statptr
;
2348 register Lisp_Object tem
, encoded_filename
;
2349 struct stat statbuf
;
2350 struct gcpro gcpro1
;
2352 encoded_filename
= ENCODE_FILE (absname
);
2354 /* stat is a good way to tell whether the file exists,
2355 regardless of what access permissions it has. */
2356 if (lstat (SDATA (encoded_filename
), &statbuf
) >= 0)
2359 Fsignal (Qfile_already_exists
,
2360 Fcons (build_string ("File already exists"),
2361 Fcons (absname
, Qnil
)));
2363 tem
= format2 ("File %s already exists; %s anyway? ",
2364 absname
, build_string (querystring
));
2366 tem
= Fy_or_n_p (tem
);
2368 tem
= do_yes_or_no_p (tem
);
2371 Fsignal (Qfile_already_exists
,
2372 Fcons (build_string ("File already exists"),
2373 Fcons (absname
, Qnil
)));
2380 statptr
->st_mode
= 0;
2385 DEFUN ("copy-file", Fcopy_file
, Scopy_file
, 2, 4,
2386 "fCopy file: \nGCopy %s to file: \np\nP",
2387 doc
: /* Copy FILE to NEWNAME. Both args must be strings.
2388 If NEWNAME names a directory, copy FILE there.
2389 Signals a `file-already-exists' error if file NEWNAME already exists,
2390 unless a third argument OK-IF-ALREADY-EXISTS is supplied and non-nil.
2391 A number as third arg means request confirmation if NEWNAME already exists.
2392 This is what happens in interactive use with M-x.
2393 Always sets the file modes of the output file to match the input file.
2394 Fourth arg KEEP-TIME non-nil means give the output file the same
2395 last-modified time as the old one. (This works on only some systems.)
2396 A prefix arg makes KEEP-TIME non-nil. */)
2397 (file
, newname
, ok_if_already_exists
, keep_time
)
2398 Lisp_Object file
, newname
, ok_if_already_exists
, keep_time
;
2401 char buf
[16 * 1024];
2402 struct stat st
, out_st
;
2403 Lisp_Object handler
;
2404 struct gcpro gcpro1
, gcpro2
, gcpro3
, gcpro4
;
2405 int count
= SPECPDL_INDEX ();
2406 int input_file_statable_p
;
2407 Lisp_Object encoded_file
, encoded_newname
;
2409 encoded_file
= encoded_newname
= Qnil
;
2410 GCPRO4 (file
, newname
, encoded_file
, encoded_newname
);
2411 CHECK_STRING (file
);
2412 CHECK_STRING (newname
);
2414 if (!NILP (Ffile_directory_p (newname
)))
2415 newname
= Fexpand_file_name (Ffile_name_nondirectory (file
), newname
);
2417 newname
= Fexpand_file_name (newname
, Qnil
);
2419 file
= Fexpand_file_name (file
, Qnil
);
2421 /* If the input file name has special constructs in it,
2422 call the corresponding file handler. */
2423 handler
= Ffind_file_name_handler (file
, Qcopy_file
);
2424 /* Likewise for output file name. */
2426 handler
= Ffind_file_name_handler (newname
, Qcopy_file
);
2427 if (!NILP (handler
))
2428 RETURN_UNGCPRO (call5 (handler
, Qcopy_file
, file
, newname
,
2429 ok_if_already_exists
, keep_time
));
2431 encoded_file
= ENCODE_FILE (file
);
2432 encoded_newname
= ENCODE_FILE (newname
);
2434 if (NILP (ok_if_already_exists
)
2435 || INTEGERP (ok_if_already_exists
))
2436 barf_or_query_if_file_exists (encoded_newname
, "copy to it",
2437 INTEGERP (ok_if_already_exists
), &out_st
, 0);
2438 else if (stat (SDATA (encoded_newname
), &out_st
) < 0)
2442 if (!CopyFile (SDATA (encoded_file
),
2443 SDATA (encoded_newname
),
2445 report_file_error ("Copying file", Fcons (file
, Fcons (newname
, Qnil
)));
2446 /* CopyFile retains the timestamp by default. */
2447 else if (NILP (keep_time
))
2453 EMACS_GET_TIME (now
);
2454 filename
= SDATA (encoded_newname
);
2456 /* Ensure file is writable while its modified time is set. */
2457 attributes
= GetFileAttributes (filename
);
2458 SetFileAttributes (filename
, attributes
& ~FILE_ATTRIBUTE_READONLY
);
2459 if (set_file_times (filename
, now
, now
))
2461 /* Restore original attributes. */
2462 SetFileAttributes (filename
, attributes
);
2463 Fsignal (Qfile_date_error
,
2464 Fcons (build_string ("Cannot set file date"),
2465 Fcons (newname
, Qnil
)));
2467 /* Restore original attributes. */
2468 SetFileAttributes (filename
, attributes
);
2470 #else /* not WINDOWSNT */
2472 ifd
= emacs_open (SDATA (encoded_file
), O_RDONLY
, 0);
2476 report_file_error ("Opening input file", Fcons (file
, Qnil
));
2478 record_unwind_protect (close_file_unwind
, make_number (ifd
));
2480 /* We can only copy regular files and symbolic links. Other files are not
2482 input_file_statable_p
= (fstat (ifd
, &st
) >= 0);
2484 #if !defined (DOS_NT) || __DJGPP__ > 1
2485 if (out_st
.st_mode
!= 0
2486 && st
.st_dev
== out_st
.st_dev
&& st
.st_ino
== out_st
.st_ino
)
2489 report_file_error ("Input and output files are the same",
2490 Fcons (file
, Fcons (newname
, Qnil
)));
2494 #if defined (S_ISREG) && defined (S_ISLNK)
2495 if (input_file_statable_p
)
2497 if (!(S_ISREG (st
.st_mode
)) && !(S_ISLNK (st
.st_mode
)))
2499 #if defined (EISDIR)
2500 /* Get a better looking error message. */
2503 report_file_error ("Non-regular file", Fcons (file
, Qnil
));
2506 #endif /* S_ISREG && S_ISLNK */
2509 /* Create the copy file with the same record format as the input file */
2510 ofd
= sys_creat (SDATA (encoded_newname
), 0666, ifd
);
2513 /* System's default file type was set to binary by _fmode in emacs.c. */
2514 ofd
= creat (SDATA (encoded_newname
), S_IREAD
| S_IWRITE
);
2515 #else /* not MSDOS */
2516 ofd
= creat (SDATA (encoded_newname
), 0666);
2517 #endif /* not MSDOS */
2520 report_file_error ("Opening output file", Fcons (newname
, Qnil
));
2522 record_unwind_protect (close_file_unwind
, make_number (ofd
));
2526 while ((n
= emacs_read (ifd
, buf
, sizeof buf
)) > 0)
2527 if (emacs_write (ofd
, buf
, n
) != n
)
2528 report_file_error ("I/O error", Fcons (newname
, Qnil
));
2531 /* Closing the output clobbers the file times on some systems. */
2532 if (emacs_close (ofd
) < 0)
2533 report_file_error ("I/O error", Fcons (newname
, Qnil
));
2535 if (input_file_statable_p
)
2537 if (!NILP (keep_time
))
2539 EMACS_TIME atime
, mtime
;
2540 EMACS_SET_SECS_USECS (atime
, st
.st_atime
, 0);
2541 EMACS_SET_SECS_USECS (mtime
, st
.st_mtime
, 0);
2542 if (set_file_times (SDATA (encoded_newname
),
2544 Fsignal (Qfile_date_error
,
2545 Fcons (build_string ("Cannot set file date"),
2546 Fcons (newname
, Qnil
)));
2549 chmod (SDATA (encoded_newname
), st
.st_mode
& 07777);
2551 #if defined (__DJGPP__) && __DJGPP__ > 1
2552 /* In DJGPP v2.0 and later, fstat usually returns true file mode bits,
2553 and if it can't, it tells so. Otherwise, under MSDOS we usually
2554 get only the READ bit, which will make the copied file read-only,
2555 so it's better not to chmod at all. */
2556 if ((_djstat_flags
& _STFAIL_WRITEBIT
) == 0)
2557 chmod (SDATA (encoded_newname
), st
.st_mode
& 07777);
2558 #endif /* DJGPP version 2 or newer */
2563 #endif /* WINDOWSNT */
2565 /* Discard the unwind protects. */
2566 specpdl_ptr
= specpdl
+ count
;
2572 DEFUN ("make-directory-internal", Fmake_directory_internal
,
2573 Smake_directory_internal
, 1, 1, 0,
2574 doc
: /* Create a new directory named DIRECTORY. */)
2576 Lisp_Object directory
;
2578 const unsigned char *dir
;
2579 Lisp_Object handler
;
2580 Lisp_Object encoded_dir
;
2582 CHECK_STRING (directory
);
2583 directory
= Fexpand_file_name (directory
, Qnil
);
2585 handler
= Ffind_file_name_handler (directory
, Qmake_directory_internal
);
2586 if (!NILP (handler
))
2587 return call2 (handler
, Qmake_directory_internal
, directory
);
2589 encoded_dir
= ENCODE_FILE (directory
);
2591 dir
= SDATA (encoded_dir
);
2594 if (mkdir (dir
) != 0)
2596 if (mkdir (dir
, 0777) != 0)
2598 report_file_error ("Creating directory", Flist (1, &directory
));
2603 DEFUN ("delete-directory", Fdelete_directory
, Sdelete_directory
, 1, 1, "FDelete directory: ",
2604 doc
: /* Delete the directory named DIRECTORY. Does not follow symlinks. */)
2606 Lisp_Object directory
;
2608 const unsigned char *dir
;
2609 Lisp_Object handler
;
2610 Lisp_Object encoded_dir
;
2612 CHECK_STRING (directory
);
2613 directory
= Fdirectory_file_name (Fexpand_file_name (directory
, Qnil
));
2615 handler
= Ffind_file_name_handler (directory
, Qdelete_directory
);
2616 if (!NILP (handler
))
2617 return call2 (handler
, Qdelete_directory
, directory
);
2619 encoded_dir
= ENCODE_FILE (directory
);
2621 dir
= SDATA (encoded_dir
);
2623 if (rmdir (dir
) != 0)
2624 report_file_error ("Removing directory", Flist (1, &directory
));
2629 DEFUN ("delete-file", Fdelete_file
, Sdelete_file
, 1, 1, "fDelete file: ",
2630 doc
: /* Delete file named FILENAME. If it is a symlink, remove the symlink.
2631 If file has multiple names, it continues to exist with the other names. */)
2633 Lisp_Object filename
;
2635 Lisp_Object handler
;
2636 Lisp_Object encoded_file
;
2637 struct gcpro gcpro1
;
2640 if (!NILP (Ffile_directory_p (filename
))
2641 && NILP (Ffile_symlink_p (filename
)))
2642 Fsignal (Qfile_error
,
2643 Fcons (build_string ("Removing old name: is a directory"),
2644 Fcons (filename
, Qnil
)));
2646 filename
= Fexpand_file_name (filename
, Qnil
);
2648 handler
= Ffind_file_name_handler (filename
, Qdelete_file
);
2649 if (!NILP (handler
))
2650 return call2 (handler
, Qdelete_file
, filename
);
2652 encoded_file
= ENCODE_FILE (filename
);
2654 if (0 > unlink (SDATA (encoded_file
)))
2655 report_file_error ("Removing old name", Flist (1, &filename
));
2660 internal_delete_file_1 (ignore
)
2666 /* Delete file FILENAME, returning 1 if successful and 0 if failed. */
2669 internal_delete_file (filename
)
2670 Lisp_Object filename
;
2672 return NILP (internal_condition_case_1 (Fdelete_file
, filename
,
2673 Qt
, internal_delete_file_1
));
2676 DEFUN ("rename-file", Frename_file
, Srename_file
, 2, 3,
2677 "fRename file: \nGRename %s to file: \np",
2678 doc
: /* Rename FILE as NEWNAME. Both args strings.
2679 If file has names other than FILE, it continues to have those names.
2680 Signals a `file-already-exists' error if a file NEWNAME already exists
2681 unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.
2682 A number as third arg means request confirmation if NEWNAME already exists.
2683 This is what happens in interactive use with M-x. */)
2684 (file
, newname
, ok_if_already_exists
)
2685 Lisp_Object file
, newname
, ok_if_already_exists
;
2688 Lisp_Object args
[2];
2690 Lisp_Object handler
;
2691 struct gcpro gcpro1
, gcpro2
, gcpro3
, gcpro4
, gcpro5
;
2692 Lisp_Object encoded_file
, encoded_newname
, symlink_target
;
2694 symlink_target
= encoded_file
= encoded_newname
= Qnil
;
2695 GCPRO5 (file
, newname
, encoded_file
, encoded_newname
, symlink_target
);
2696 CHECK_STRING (file
);
2697 CHECK_STRING (newname
);
2698 file
= Fexpand_file_name (file
, Qnil
);
2700 if (!NILP (Ffile_directory_p (newname
)))
2701 newname
= Fexpand_file_name (Ffile_name_nondirectory (file
), newname
);
2703 newname
= Fexpand_file_name (newname
, Qnil
);
2705 /* If the file name has special constructs in it,
2706 call the corresponding file handler. */
2707 handler
= Ffind_file_name_handler (file
, Qrename_file
);
2709 handler
= Ffind_file_name_handler (newname
, Qrename_file
);
2710 if (!NILP (handler
))
2711 RETURN_UNGCPRO (call4 (handler
, Qrename_file
,
2712 file
, newname
, ok_if_already_exists
));
2714 encoded_file
= ENCODE_FILE (file
);
2715 encoded_newname
= ENCODE_FILE (newname
);
2718 /* If the file names are identical but for the case, don't ask for
2719 confirmation: they simply want to change the letter-case of the
2721 if (NILP (Fstring_equal (Fdowncase (file
), Fdowncase (newname
))))
2723 if (NILP (ok_if_already_exists
)
2724 || INTEGERP (ok_if_already_exists
))
2725 barf_or_query_if_file_exists (encoded_newname
, "rename to it",
2726 INTEGERP (ok_if_already_exists
), 0, 0);
2728 if (0 > rename (SDATA (encoded_file
), SDATA (encoded_newname
)))
2730 if (0 > link (SDATA (encoded_file
), SDATA (encoded_newname
))
2731 || 0 > unlink (SDATA (encoded_file
)))
2737 symlink_target
= Ffile_symlink_p (file
);
2738 if (! NILP (symlink_target
))
2739 Fmake_symbolic_link (symlink_target
, newname
,
2740 NILP (ok_if_already_exists
) ? Qnil
: Qt
);
2743 Fcopy_file (file
, newname
,
2744 /* We have already prompted if it was an integer,
2745 so don't have copy-file prompt again. */
2746 NILP (ok_if_already_exists
) ? Qnil
: Qt
, Qt
);
2747 Fdelete_file (file
);
2754 report_file_error ("Renaming", Flist (2, args
));
2757 report_file_error ("Renaming", Flist (2, &file
));
2764 DEFUN ("add-name-to-file", Fadd_name_to_file
, Sadd_name_to_file
, 2, 3,
2765 "fAdd name to file: \nGName to add to %s: \np",
2766 doc
: /* Give FILE additional name NEWNAME. Both args strings.
2767 Signals a `file-already-exists' error if a file NEWNAME already exists
2768 unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.
2769 A number as third arg means request confirmation if NEWNAME already exists.
2770 This is what happens in interactive use with M-x. */)
2771 (file
, newname
, ok_if_already_exists
)
2772 Lisp_Object file
, newname
, ok_if_already_exists
;
2775 Lisp_Object args
[2];
2777 Lisp_Object handler
;
2778 Lisp_Object encoded_file
, encoded_newname
;
2779 struct gcpro gcpro1
, gcpro2
, gcpro3
, gcpro4
;
2781 GCPRO4 (file
, newname
, encoded_file
, encoded_newname
);
2782 encoded_file
= encoded_newname
= Qnil
;
2783 CHECK_STRING (file
);
2784 CHECK_STRING (newname
);
2785 file
= Fexpand_file_name (file
, Qnil
);
2787 if (!NILP (Ffile_directory_p (newname
)))
2788 newname
= Fexpand_file_name (Ffile_name_nondirectory (file
), newname
);
2790 newname
= Fexpand_file_name (newname
, Qnil
);
2792 /* If the file name has special constructs in it,
2793 call the corresponding file handler. */
2794 handler
= Ffind_file_name_handler (file
, Qadd_name_to_file
);
2795 if (!NILP (handler
))
2796 RETURN_UNGCPRO (call4 (handler
, Qadd_name_to_file
, file
,
2797 newname
, ok_if_already_exists
));
2799 /* If the new name has special constructs in it,
2800 call the corresponding file handler. */
2801 handler
= Ffind_file_name_handler (newname
, Qadd_name_to_file
);
2802 if (!NILP (handler
))
2803 RETURN_UNGCPRO (call4 (handler
, Qadd_name_to_file
, file
,
2804 newname
, ok_if_already_exists
));
2806 encoded_file
= ENCODE_FILE (file
);
2807 encoded_newname
= ENCODE_FILE (newname
);
2809 if (NILP (ok_if_already_exists
)
2810 || INTEGERP (ok_if_already_exists
))
2811 barf_or_query_if_file_exists (encoded_newname
, "make it a new name",
2812 INTEGERP (ok_if_already_exists
), 0, 0);
2814 unlink (SDATA (newname
));
2815 if (0 > link (SDATA (encoded_file
), SDATA (encoded_newname
)))
2820 report_file_error ("Adding new name", Flist (2, args
));
2822 report_file_error ("Adding new name", Flist (2, &file
));
2831 DEFUN ("make-symbolic-link", Fmake_symbolic_link
, Smake_symbolic_link
, 2, 3,
2832 "FMake symbolic link to file: \nGMake symbolic link to file %s: \np",
2833 doc
: /* Make a symbolic link to FILENAME, named LINKNAME. Both args strings.
2834 Signals a `file-already-exists' error if a file LINKNAME already exists
2835 unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.
2836 A number as third arg means request confirmation if LINKNAME already exists.
2837 This happens for interactive use with M-x. */)
2838 (filename
, linkname
, ok_if_already_exists
)
2839 Lisp_Object filename
, linkname
, ok_if_already_exists
;
2842 Lisp_Object args
[2];
2844 Lisp_Object handler
;
2845 Lisp_Object encoded_filename
, encoded_linkname
;
2846 struct gcpro gcpro1
, gcpro2
, gcpro3
, gcpro4
;
2848 GCPRO4 (filename
, linkname
, encoded_filename
, encoded_linkname
);
2849 encoded_filename
= encoded_linkname
= Qnil
;
2850 CHECK_STRING (filename
);
2851 CHECK_STRING (linkname
);
2852 /* If the link target has a ~, we must expand it to get
2853 a truly valid file name. Otherwise, do not expand;
2854 we want to permit links to relative file names. */
2855 if (SREF (filename
, 0) == '~')
2856 filename
= Fexpand_file_name (filename
, Qnil
);
2858 if (!NILP (Ffile_directory_p (linkname
)))
2859 linkname
= Fexpand_file_name (Ffile_name_nondirectory (filename
), linkname
);
2861 linkname
= Fexpand_file_name (linkname
, Qnil
);
2863 /* If the file name has special constructs in it,
2864 call the corresponding file handler. */
2865 handler
= Ffind_file_name_handler (filename
, Qmake_symbolic_link
);
2866 if (!NILP (handler
))
2867 RETURN_UNGCPRO (call4 (handler
, Qmake_symbolic_link
, filename
,
2868 linkname
, ok_if_already_exists
));
2870 /* If the new link name has special constructs in it,
2871 call the corresponding file handler. */
2872 handler
= Ffind_file_name_handler (linkname
, Qmake_symbolic_link
);
2873 if (!NILP (handler
))
2874 RETURN_UNGCPRO (call4 (handler
, Qmake_symbolic_link
, filename
,
2875 linkname
, ok_if_already_exists
));
2877 encoded_filename
= ENCODE_FILE (filename
);
2878 encoded_linkname
= ENCODE_FILE (linkname
);
2880 if (NILP (ok_if_already_exists
)
2881 || INTEGERP (ok_if_already_exists
))
2882 barf_or_query_if_file_exists (encoded_linkname
, "make it a link",
2883 INTEGERP (ok_if_already_exists
), 0, 0);
2884 if (0 > symlink (SDATA (encoded_filename
),
2885 SDATA (encoded_linkname
)))
2887 /* If we didn't complain already, silently delete existing file. */
2888 if (errno
== EEXIST
)
2890 unlink (SDATA (encoded_linkname
));
2891 if (0 <= symlink (SDATA (encoded_filename
),
2892 SDATA (encoded_linkname
)))
2902 report_file_error ("Making symbolic link", Flist (2, args
));
2904 report_file_error ("Making symbolic link", Flist (2, &filename
));
2910 #endif /* S_IFLNK */
2914 DEFUN ("define-logical-name", Fdefine_logical_name
, Sdefine_logical_name
,
2915 2, 2, "sDefine logical name: \nsDefine logical name %s as: ",
2916 doc
: /* Define the job-wide logical name NAME to have the value STRING.
2917 If STRING is nil or a null string, the logical name NAME is deleted. */)
2922 CHECK_STRING (name
);
2924 delete_logical_name (SDATA (name
));
2927 CHECK_STRING (string
);
2929 if (SCHARS (string
) == 0)
2930 delete_logical_name (SDATA (name
));
2932 define_logical_name (SDATA (name
), SDATA (string
));
2941 DEFUN ("sysnetunam", Fsysnetunam
, Ssysnetunam
, 2, 2, 0,
2942 doc
: /* Open a network connection to PATH using LOGIN as the login string. */)
2944 Lisp_Object path
, login
;
2948 CHECK_STRING (path
);
2949 CHECK_STRING (login
);
2951 netresult
= netunam (SDATA (path
), SDATA (login
));
2953 if (netresult
== -1)
2958 #endif /* HPUX_NET */
2960 DEFUN ("file-name-absolute-p", Ffile_name_absolute_p
, Sfile_name_absolute_p
,
2962 doc
: /* Return t if file FILENAME specifies an absolute file name.
2963 On Unix, this is a name starting with a `/' or a `~'. */)
2965 Lisp_Object filename
;
2967 const unsigned char *ptr
;
2969 CHECK_STRING (filename
);
2970 ptr
= SDATA (filename
);
2971 if (IS_DIRECTORY_SEP (*ptr
) || *ptr
== '~'
2973 /* ??? This criterion is probably wrong for '<'. */
2974 || index (ptr
, ':') || index (ptr
, '<')
2975 || (*ptr
== '[' && (ptr
[1] != '-' || (ptr
[2] != '.' && ptr
[2] != ']'))
2979 || (IS_DRIVE (*ptr
) && ptr
[1] == ':' && IS_DIRECTORY_SEP (ptr
[2]))
2987 /* Return nonzero if file FILENAME exists and can be executed. */
2990 check_executable (filename
)
2994 int len
= strlen (filename
);
2997 if (stat (filename
, &st
) < 0)
2999 #if defined (WINDOWSNT) || (defined (MSDOS) && __DJGPP__ > 1)
3000 return ((st
.st_mode
& S_IEXEC
) != 0);
3002 return (S_ISREG (st
.st_mode
)
3004 && (stricmp ((suffix
= filename
+ len
-4), ".com") == 0
3005 || stricmp (suffix
, ".exe") == 0
3006 || stricmp (suffix
, ".bat") == 0)
3007 || (st
.st_mode
& S_IFMT
) == S_IFDIR
);
3008 #endif /* not WINDOWSNT */
3009 #else /* not DOS_NT */
3010 #ifdef HAVE_EUIDACCESS
3011 return (euidaccess (filename
, 1) >= 0);
3013 /* Access isn't quite right because it uses the real uid
3014 and we really want to test with the effective uid.
3015 But Unix doesn't give us a right way to do it. */
3016 return (access (filename
, 1) >= 0);
3018 #endif /* not DOS_NT */
3021 /* Return nonzero if file FILENAME exists and can be written. */
3024 check_writable (filename
)
3029 if (stat (filename
, &st
) < 0)
3031 return (st
.st_mode
& S_IWRITE
|| (st
.st_mode
& S_IFMT
) == S_IFDIR
);
3032 #else /* not MSDOS */
3033 #ifdef HAVE_EUIDACCESS
3034 return (euidaccess (filename
, 2) >= 0);
3036 /* Access isn't quite right because it uses the real uid
3037 and we really want to test with the effective uid.
3038 But Unix doesn't give us a right way to do it.
3039 Opening with O_WRONLY could work for an ordinary file,
3040 but would lose for directories. */
3041 return (access (filename
, 2) >= 0);
3043 #endif /* not MSDOS */
3046 DEFUN ("file-exists-p", Ffile_exists_p
, Sfile_exists_p
, 1, 1, 0,
3047 doc
: /* Return t if file FILENAME exists. (This does not mean you can read it.)
3048 See also `file-readable-p' and `file-attributes'. */)
3050 Lisp_Object filename
;
3052 Lisp_Object absname
;
3053 Lisp_Object handler
;
3054 struct stat statbuf
;
3056 CHECK_STRING (filename
);
3057 absname
= Fexpand_file_name (filename
, Qnil
);
3059 /* If the file name has special constructs in it,
3060 call the corresponding file handler. */
3061 handler
= Ffind_file_name_handler (absname
, Qfile_exists_p
);
3062 if (!NILP (handler
))
3063 return call2 (handler
, Qfile_exists_p
, absname
);
3065 absname
= ENCODE_FILE (absname
);
3067 return (stat (SDATA (absname
), &statbuf
) >= 0) ? Qt
: Qnil
;
3070 DEFUN ("file-executable-p", Ffile_executable_p
, Sfile_executable_p
, 1, 1, 0,
3071 doc
: /* Return t if FILENAME can be executed by you.
3072 For a directory, this means you can access files in that directory. */)
3074 Lisp_Object filename
;
3076 Lisp_Object absname
;
3077 Lisp_Object handler
;
3079 CHECK_STRING (filename
);
3080 absname
= Fexpand_file_name (filename
, Qnil
);
3082 /* If the file name has special constructs in it,
3083 call the corresponding file handler. */
3084 handler
= Ffind_file_name_handler (absname
, Qfile_executable_p
);
3085 if (!NILP (handler
))
3086 return call2 (handler
, Qfile_executable_p
, absname
);
3088 absname
= ENCODE_FILE (absname
);
3090 return (check_executable (SDATA (absname
)) ? Qt
: Qnil
);
3093 DEFUN ("file-readable-p", Ffile_readable_p
, Sfile_readable_p
, 1, 1, 0,
3094 doc
: /* Return t if file FILENAME exists and you can read it.
3095 See also `file-exists-p' and `file-attributes'. */)
3097 Lisp_Object filename
;
3099 Lisp_Object absname
;
3100 Lisp_Object handler
;
3103 struct stat statbuf
;
3105 CHECK_STRING (filename
);
3106 absname
= Fexpand_file_name (filename
, Qnil
);
3108 /* If the file name has special constructs in it,
3109 call the corresponding file handler. */
3110 handler
= Ffind_file_name_handler (absname
, Qfile_readable_p
);
3111 if (!NILP (handler
))
3112 return call2 (handler
, Qfile_readable_p
, absname
);
3114 absname
= ENCODE_FILE (absname
);
3116 #if defined(DOS_NT) || defined(macintosh)
3117 /* Under MS-DOS, Windows, and Macintosh, open does not work for
3119 if (access (SDATA (absname
), 0) == 0)
3122 #else /* not DOS_NT and not macintosh */
3124 #if defined (S_ISFIFO) && defined (O_NONBLOCK)
3125 /* Opening a fifo without O_NONBLOCK can wait.
3126 We don't want to wait. But we don't want to mess wth O_NONBLOCK
3127 except in the case of a fifo, on a system which handles it. */
3128 desc
= stat (SDATA (absname
), &statbuf
);
3131 if (S_ISFIFO (statbuf
.st_mode
))
3132 flags
|= O_NONBLOCK
;
3134 desc
= emacs_open (SDATA (absname
), flags
, 0);
3139 #endif /* not DOS_NT and not macintosh */
3142 /* Having this before file-symlink-p mysteriously caused it to be forgotten
3144 DEFUN ("file-writable-p", Ffile_writable_p
, Sfile_writable_p
, 1, 1, 0,
3145 doc
: /* Return t if file FILENAME can be written or created by you. */)
3147 Lisp_Object filename
;
3149 Lisp_Object absname
, dir
, encoded
;
3150 Lisp_Object handler
;
3151 struct stat statbuf
;
3153 CHECK_STRING (filename
);
3154 absname
= Fexpand_file_name (filename
, Qnil
);
3156 /* If the file name has special constructs in it,
3157 call the corresponding file handler. */
3158 handler
= Ffind_file_name_handler (absname
, Qfile_writable_p
);
3159 if (!NILP (handler
))
3160 return call2 (handler
, Qfile_writable_p
, absname
);
3162 encoded
= ENCODE_FILE (absname
);
3163 if (stat (SDATA (encoded
), &statbuf
) >= 0)
3164 return (check_writable (SDATA (encoded
))
3167 dir
= Ffile_name_directory (absname
);
3170 dir
= Fdirectory_file_name (dir
);
3174 dir
= Fdirectory_file_name (dir
);
3177 dir
= ENCODE_FILE (dir
);
3179 /* The read-only attribute of the parent directory doesn't affect
3180 whether a file or directory can be created within it. Some day we
3181 should check ACLs though, which do affect this. */
3182 if (stat (SDATA (dir
), &statbuf
) < 0)
3184 return (statbuf
.st_mode
& S_IFMT
) == S_IFDIR
? Qt
: Qnil
;
3186 return (check_writable (!NILP (dir
) ? (char *) SDATA (dir
) : "")
3191 DEFUN ("access-file", Faccess_file
, Saccess_file
, 2, 2, 0,
3192 doc
: /* Access file FILENAME, and get an error if that does not work.
3193 The second argument STRING is used in the error message.
3194 If there is no error, we return nil. */)
3196 Lisp_Object filename
, string
;
3198 Lisp_Object handler
, encoded_filename
, absname
;
3201 CHECK_STRING (filename
);
3202 absname
= Fexpand_file_name (filename
, Qnil
);
3204 CHECK_STRING (string
);
3206 /* If the file name has special constructs in it,
3207 call the corresponding file handler. */
3208 handler
= Ffind_file_name_handler (absname
, Qaccess_file
);
3209 if (!NILP (handler
))
3210 return call3 (handler
, Qaccess_file
, absname
, string
);
3212 encoded_filename
= ENCODE_FILE (absname
);
3214 fd
= emacs_open (SDATA (encoded_filename
), O_RDONLY
, 0);
3216 report_file_error (SDATA (string
), Fcons (filename
, Qnil
));
3222 DEFUN ("file-symlink-p", Ffile_symlink_p
, Sfile_symlink_p
, 1, 1, 0,
3223 doc
: /* Return non-nil if file FILENAME is the name of a symbolic link.
3224 The value is the link target, as a string.
3225 Otherwise returns nil. */)
3227 Lisp_Object filename
;
3229 Lisp_Object handler
;
3231 CHECK_STRING (filename
);
3232 filename
= Fexpand_file_name (filename
, Qnil
);
3234 /* If the file name has special constructs in it,
3235 call the corresponding file handler. */
3236 handler
= Ffind_file_name_handler (filename
, Qfile_symlink_p
);
3237 if (!NILP (handler
))
3238 return call2 (handler
, Qfile_symlink_p
, filename
);
3247 filename
= ENCODE_FILE (filename
);
3254 buf
= (char *) xrealloc (buf
, bufsize
);
3255 bzero (buf
, bufsize
);
3258 valsize
= readlink (SDATA (filename
), buf
, bufsize
);
3262 /* HP-UX reports ERANGE if buffer is too small. */
3263 if (errno
== ERANGE
)
3273 while (valsize
>= bufsize
);
3275 val
= make_string (buf
, valsize
);
3276 if (buf
[0] == '/' && index (buf
, ':'))
3277 val
= concat2 (build_string ("/:"), val
);
3279 val
= DECODE_FILE (val
);
3282 #else /* not S_IFLNK */
3284 #endif /* not S_IFLNK */
3287 DEFUN ("file-directory-p", Ffile_directory_p
, Sfile_directory_p
, 1, 1, 0,
3288 doc
: /* Return t if FILENAME names an existing directory.
3289 Symbolic links to directories count as directories.
3290 See `file-symlink-p' to distinguish symlinks. */)
3292 Lisp_Object filename
;
3294 register Lisp_Object absname
;
3296 Lisp_Object handler
;
3298 absname
= expand_and_dir_to_file (filename
, current_buffer
->directory
);
3300 /* If the file name has special constructs in it,
3301 call the corresponding file handler. */
3302 handler
= Ffind_file_name_handler (absname
, Qfile_directory_p
);
3303 if (!NILP (handler
))
3304 return call2 (handler
, Qfile_directory_p
, absname
);
3306 absname
= ENCODE_FILE (absname
);
3308 if (stat (SDATA (absname
), &st
) < 0)
3310 return (st
.st_mode
& S_IFMT
) == S_IFDIR
? Qt
: Qnil
;
3313 DEFUN ("file-accessible-directory-p", Ffile_accessible_directory_p
, Sfile_accessible_directory_p
, 1, 1, 0,
3314 doc
: /* Return t if file FILENAME names a directory you can open.
3315 For the value to be t, FILENAME must specify the name of a directory as a file,
3316 and the directory must allow you to open files in it. In order to use a
3317 directory as a buffer's current directory, this predicate must return true.
3318 A directory name spec may be given instead; then the value is t
3319 if the directory so specified exists and really is a readable and
3320 searchable directory. */)
3322 Lisp_Object filename
;
3324 Lisp_Object handler
;
3326 struct gcpro gcpro1
;
3328 /* If the file name has special constructs in it,
3329 call the corresponding file handler. */
3330 handler
= Ffind_file_name_handler (filename
, Qfile_accessible_directory_p
);
3331 if (!NILP (handler
))
3332 return call2 (handler
, Qfile_accessible_directory_p
, filename
);
3335 tem
= (NILP (Ffile_directory_p (filename
))
3336 || NILP (Ffile_executable_p (filename
)));
3338 return tem
? Qnil
: Qt
;
3341 DEFUN ("file-regular-p", Ffile_regular_p
, Sfile_regular_p
, 1, 1, 0,
3342 doc
: /* Return t if file FILENAME is the name of a regular file.
3343 This is the sort of file that holds an ordinary stream of data bytes. */)
3345 Lisp_Object filename
;
3347 register Lisp_Object absname
;
3349 Lisp_Object handler
;
3351 absname
= expand_and_dir_to_file (filename
, current_buffer
->directory
);
3353 /* If the file name has special constructs in it,
3354 call the corresponding file handler. */
3355 handler
= Ffind_file_name_handler (absname
, Qfile_regular_p
);
3356 if (!NILP (handler
))
3357 return call2 (handler
, Qfile_regular_p
, absname
);
3359 absname
= ENCODE_FILE (absname
);
3364 Lisp_Object tem
= Vw32_get_true_file_attributes
;
3366 /* Tell stat to use expensive method to get accurate info. */
3367 Vw32_get_true_file_attributes
= Qt
;
3368 result
= stat (SDATA (absname
), &st
);
3369 Vw32_get_true_file_attributes
= tem
;
3373 return (st
.st_mode
& S_IFMT
) == S_IFREG
? Qt
: Qnil
;
3376 if (stat (SDATA (absname
), &st
) < 0)
3378 return (st
.st_mode
& S_IFMT
) == S_IFREG
? Qt
: Qnil
;
3382 DEFUN ("file-modes", Ffile_modes
, Sfile_modes
, 1, 1, 0,
3383 doc
: /* Return mode bits of file named FILENAME, as an integer.
3384 Return nil, if file does not exist or is not accessible. */)
3386 Lisp_Object filename
;
3388 Lisp_Object absname
;
3390 Lisp_Object handler
;
3392 absname
= expand_and_dir_to_file (filename
, current_buffer
->directory
);
3394 /* If the file name has special constructs in it,
3395 call the corresponding file handler. */
3396 handler
= Ffind_file_name_handler (absname
, Qfile_modes
);
3397 if (!NILP (handler
))
3398 return call2 (handler
, Qfile_modes
, absname
);
3400 absname
= ENCODE_FILE (absname
);
3402 if (stat (SDATA (absname
), &st
) < 0)
3404 #if defined (MSDOS) && __DJGPP__ < 2
3405 if (check_executable (SDATA (absname
)))
3406 st
.st_mode
|= S_IEXEC
;
3407 #endif /* MSDOS && __DJGPP__ < 2 */
3409 return make_number (st
.st_mode
& 07777);
3412 DEFUN ("set-file-modes", Fset_file_modes
, Sset_file_modes
, 2, 2, 0,
3413 doc
: /* Set mode bits of file named FILENAME to MODE (an integer).
3414 Only the 12 low bits of MODE are used. */)
3416 Lisp_Object filename
, mode
;
3418 Lisp_Object absname
, encoded_absname
;
3419 Lisp_Object handler
;
3421 absname
= Fexpand_file_name (filename
, current_buffer
->directory
);
3422 CHECK_NUMBER (mode
);
3424 /* If the file name has special constructs in it,
3425 call the corresponding file handler. */
3426 handler
= Ffind_file_name_handler (absname
, Qset_file_modes
);
3427 if (!NILP (handler
))
3428 return call3 (handler
, Qset_file_modes
, absname
, mode
);
3430 encoded_absname
= ENCODE_FILE (absname
);
3432 if (chmod (SDATA (encoded_absname
), XINT (mode
)) < 0)
3433 report_file_error ("Doing chmod", Fcons (absname
, Qnil
));
3438 DEFUN ("set-default-file-modes", Fset_default_file_modes
, Sset_default_file_modes
, 1, 1, 0,
3439 doc
: /* Set the file permission bits for newly created files.
3440 The argument MODE should be an integer; only the low 9 bits are used.
3441 This setting is inherited by subprocesses. */)
3445 CHECK_NUMBER (mode
);
3447 umask ((~ XINT (mode
)) & 0777);
3452 DEFUN ("default-file-modes", Fdefault_file_modes
, Sdefault_file_modes
, 0, 0, 0,
3453 doc
: /* Return the default file protection for created files.
3454 The value is an integer. */)
3460 realmask
= umask (0);
3463 XSETINT (value
, (~ realmask
) & 0777);
3467 extern int lisp_time_argument
P_ ((Lisp_Object
, time_t *, int *));
3469 DEFUN ("set-file-times", Fset_file_times
, Sset_file_times
, 1, 2, 0,
3470 doc
: /* Set times of file FILENAME to TIME.
3471 Set both access and modification times.
3472 Return t on success, else nil.
3473 Use the current time if TIME is nil. TIME is in the format of
3476 Lisp_Object filename
, time
;
3478 Lisp_Object absname
, encoded_absname
;
3479 Lisp_Object handler
;
3483 if (! lisp_time_argument (time
, &sec
, &usec
))
3484 error ("Invalid time specification");
3486 absname
= Fexpand_file_name (filename
, current_buffer
->directory
);
3488 /* If the file name has special constructs in it,
3489 call the corresponding file handler. */
3490 handler
= Ffind_file_name_handler (absname
, Qset_file_times
);
3491 if (!NILP (handler
))
3492 return call3 (handler
, Qset_file_times
, absname
, time
);
3494 encoded_absname
= ENCODE_FILE (absname
);
3499 EMACS_SET_SECS (t
, sec
);
3500 EMACS_SET_USECS (t
, usec
);
3502 if (set_file_times (SDATA (encoded_absname
), t
, t
))
3507 /* Setting times on a directory always fails. */
3508 if (stat (SDATA (encoded_absname
), &st
) == 0
3509 && (st
.st_mode
& S_IFMT
) == S_IFDIR
)
3512 report_file_error ("Setting file times", Fcons (absname
, Qnil
));
3525 DEFUN ("unix-sync", Funix_sync
, Sunix_sync
, 0, 0, "",
3526 doc
: /* Tell Unix to finish all pending disk updates. */)
3535 DEFUN ("file-newer-than-file-p", Ffile_newer_than_file_p
, Sfile_newer_than_file_p
, 2, 2, 0,
3536 doc
: /* Return t if file FILE1 is newer than file FILE2.
3537 If FILE1 does not exist, the answer is nil;
3538 otherwise, if FILE2 does not exist, the answer is t. */)
3540 Lisp_Object file1
, file2
;
3542 Lisp_Object absname1
, absname2
;
3545 Lisp_Object handler
;
3546 struct gcpro gcpro1
, gcpro2
;
3548 CHECK_STRING (file1
);
3549 CHECK_STRING (file2
);
3552 GCPRO2 (absname1
, file2
);
3553 absname1
= expand_and_dir_to_file (file1
, current_buffer
->directory
);
3554 absname2
= expand_and_dir_to_file (file2
, current_buffer
->directory
);
3557 /* If the file name has special constructs in it,
3558 call the corresponding file handler. */
3559 handler
= Ffind_file_name_handler (absname1
, Qfile_newer_than_file_p
);
3561 handler
= Ffind_file_name_handler (absname2
, Qfile_newer_than_file_p
);
3562 if (!NILP (handler
))
3563 return call3 (handler
, Qfile_newer_than_file_p
, absname1
, absname2
);
3565 GCPRO2 (absname1
, absname2
);
3566 absname1
= ENCODE_FILE (absname1
);
3567 absname2
= ENCODE_FILE (absname2
);
3570 if (stat (SDATA (absname1
), &st
) < 0)
3573 mtime1
= st
.st_mtime
;
3575 if (stat (SDATA (absname2
), &st
) < 0)
3578 return (mtime1
> st
.st_mtime
) ? Qt
: Qnil
;
3582 Lisp_Object Qfind_buffer_file_type
;
3585 #ifndef READ_BUF_SIZE
3586 #define READ_BUF_SIZE (64 << 10)
3589 extern void adjust_markers_for_delete
P_ ((int, int, int, int));
3591 /* This function is called after Lisp functions to decide a coding
3592 system are called, or when they cause an error. Before they are
3593 called, the current buffer is set unibyte and it contains only a
3594 newly inserted text (thus the buffer was empty before the
3597 The functions may set markers, overlays, text properties, or even
3598 alter the buffer contents, change the current buffer.
3600 Here, we reset all those changes by:
3601 o set back the current buffer.
3602 o move all markers and overlays to BEG.
3603 o remove all text properties.
3604 o set back the buffer multibyteness. */
3607 decide_coding_unwind (unwind_data
)
3608 Lisp_Object unwind_data
;
3610 Lisp_Object multibyte
, undo_list
, buffer
;
3612 multibyte
= XCAR (unwind_data
);
3613 unwind_data
= XCDR (unwind_data
);
3614 undo_list
= XCAR (unwind_data
);
3615 buffer
= XCDR (unwind_data
);
3617 if (current_buffer
!= XBUFFER (buffer
))
3618 set_buffer_internal (XBUFFER (buffer
));
3619 adjust_markers_for_delete (BEG
, BEG_BYTE
, Z
, Z_BYTE
);
3620 adjust_overlays_for_delete (BEG
, Z
- BEG
);
3621 BUF_INTERVALS (current_buffer
) = 0;
3622 TEMP_SET_PT_BOTH (BEG
, BEG_BYTE
);
3624 /* Now we are safe to change the buffer's multibyteness directly. */
3625 current_buffer
->enable_multibyte_characters
= multibyte
;
3626 current_buffer
->undo_list
= undo_list
;
3632 /* Used to pass values from insert-file-contents to read_non_regular. */
3634 static int non_regular_fd
;
3635 static int non_regular_inserted
;
3636 static int non_regular_nbytes
;
3639 /* Read from a non-regular file.
3640 Read non_regular_trytry bytes max from non_regular_fd.
3641 Non_regular_inserted specifies where to put the read bytes.
3642 Value is the number of bytes read. */
3651 nbytes
= emacs_read (non_regular_fd
,
3652 BEG_ADDR
+ PT_BYTE
- BEG_BYTE
+ non_regular_inserted
,
3653 non_regular_nbytes
);
3655 return make_number (nbytes
);
3659 /* Condition-case handler used when reading from non-regular files
3660 in insert-file-contents. */
3663 read_non_regular_quit ()
3669 DEFUN ("insert-file-contents", Finsert_file_contents
, Sinsert_file_contents
,
3671 doc
: /* Insert contents of file FILENAME after point.
3672 Returns list of absolute file name and number of characters inserted.
3673 If second argument VISIT is non-nil, the buffer's visited filename
3674 and last save file modtime are set, and it is marked unmodified.
3675 If visiting and the file does not exist, visiting is completed
3676 before the error is signaled.
3677 The optional third and fourth arguments BEG and END
3678 specify what portion of the file to insert.
3679 These arguments count bytes in the file, not characters in the buffer.
3680 If VISIT is non-nil, BEG and END must be nil.
3682 If optional fifth argument REPLACE is non-nil,
3683 it means replace the current buffer contents (in the accessible portion)
3684 with the file contents. This is better than simply deleting and inserting
3685 the whole thing because (1) it preserves some marker positions
3686 and (2) it puts less data in the undo list.
3687 When REPLACE is non-nil, the value is the number of characters actually read,
3688 which is often less than the number of characters to be read.
3690 This does code conversion according to the value of
3691 `coding-system-for-read' or `file-coding-system-alist',
3692 and sets the variable `last-coding-system-used' to the coding system
3694 (filename
, visit
, beg
, end
, replace
)
3695 Lisp_Object filename
, visit
, beg
, end
, replace
;
3700 register int how_much
;
3701 register int unprocessed
;
3702 int count
= SPECPDL_INDEX ();
3703 struct gcpro gcpro1
, gcpro2
, gcpro3
, gcpro4
;
3704 Lisp_Object handler
, val
, insval
, orig_filename
;
3707 int not_regular
= 0;
3708 unsigned char read_buf
[READ_BUF_SIZE
];
3709 struct coding_system coding
;
3710 unsigned char buffer
[1 << 14];
3711 int replace_handled
= 0;
3712 int set_coding_system
= 0;
3713 Lisp_Object coding_system
;
3716 if (current_buffer
->base_buffer
&& ! NILP (visit
))
3717 error ("Cannot do file visiting in an indirect buffer");
3719 if (!NILP (current_buffer
->read_only
))
3720 Fbarf_if_buffer_read_only ();
3724 orig_filename
= Qnil
;
3726 GCPRO4 (filename
, val
, p
, orig_filename
);
3728 CHECK_STRING (filename
);
3729 filename
= Fexpand_file_name (filename
, Qnil
);
3731 /* The value Qnil means that the coding system is not yet
3733 coding_system
= Qnil
;
3735 /* If the file name has special constructs in it,
3736 call the corresponding file handler. */
3737 handler
= Ffind_file_name_handler (filename
, Qinsert_file_contents
);
3738 if (!NILP (handler
))
3740 val
= call6 (handler
, Qinsert_file_contents
, filename
,
3741 visit
, beg
, end
, replace
);
3742 if (CONSP (val
) && CONSP (XCDR (val
)))
3743 inserted
= XINT (XCAR (XCDR (val
)));
3747 orig_filename
= filename
;
3748 filename
= ENCODE_FILE (filename
);
3754 Lisp_Object tem
= Vw32_get_true_file_attributes
;
3756 /* Tell stat to use expensive method to get accurate info. */
3757 Vw32_get_true_file_attributes
= Qt
;
3758 total
= stat (SDATA (filename
), &st
);
3759 Vw32_get_true_file_attributes
= tem
;
3764 if (stat (SDATA (filename
), &st
) < 0)
3766 if ((fd
= emacs_open (SDATA (filename
), O_RDONLY
, 0)) < 0
3767 || fstat (fd
, &st
) < 0)
3768 #endif /* not APOLLO */
3769 #endif /* WINDOWSNT */
3771 if (fd
>= 0) emacs_close (fd
);
3774 report_file_error ("Opening input file", Fcons (orig_filename
, Qnil
));
3777 if (!NILP (Vcoding_system_for_read
))
3778 Fset (Qbuffer_file_coding_system
, Vcoding_system_for_read
);
3783 /* This code will need to be changed in order to work on named
3784 pipes, and it's probably just not worth it. So we should at
3785 least signal an error. */
3786 if (!S_ISREG (st
.st_mode
))
3793 if (! NILP (replace
) || ! NILP (beg
) || ! NILP (end
))
3794 Fsignal (Qfile_error
,
3795 Fcons (build_string ("not a regular file"),
3796 Fcons (orig_filename
, Qnil
)));
3801 if ((fd
= emacs_open (SDATA (filename
), O_RDONLY
, 0)) < 0)
3804 /* Replacement should preserve point as it preserves markers. */
3805 if (!NILP (replace
))
3806 record_unwind_protect (restore_point_unwind
, Fpoint_marker ());
3808 record_unwind_protect (close_file_unwind
, make_number (fd
));
3810 /* Supposedly happens on VMS. */
3811 /* Can happen on any platform that uses long as type of off_t, but allows
3812 file sizes to exceed 2Gb. VMS is no longer officially supported, so
3813 give a message suitable for the latter case. */
3814 if (! not_regular
&& st
.st_size
< 0)
3815 error ("Maximum buffer size exceeded");
3817 /* Prevent redisplay optimizations. */
3818 current_buffer
->clip_changed
= 1;
3822 if (!NILP (beg
) || !NILP (end
))
3823 error ("Attempt to visit less than an entire file");
3824 if (BEG
< Z
&& NILP (replace
))
3825 error ("Cannot do file visiting in a non-empty buffer");
3831 XSETFASTINT (beg
, 0);
3839 XSETINT (end
, st
.st_size
);
3841 /* Arithmetic overflow can occur if an Emacs integer cannot
3842 represent the file size, or if the calculations below
3843 overflow. The calculations below double the file size
3844 twice, so check that it can be multiplied by 4 safely. */
3845 if (XINT (end
) != st
.st_size
3846 || ((int) st
.st_size
* 4) / 4 != st
.st_size
)
3847 error ("Maximum buffer size exceeded");
3849 /* The file size returned from stat may be zero, but data
3850 may be readable nonetheless, for example when this is a
3851 file in the /proc filesystem. */
3852 if (st
.st_size
== 0)
3853 XSETINT (end
, READ_BUF_SIZE
);
3857 if (EQ (Vcoding_system_for_read
, Qauto_save_coding
))
3859 coding_system
= Qutf_8_emacs
;
3860 setup_coding_system (coding_system
, &coding
);
3861 /* Ensure we set Vlast_coding_system_used. */
3862 set_coding_system
= 1;
3866 /* Decide the coding system to use for reading the file now
3867 because we can't use an optimized method for handling
3868 `coding:' tag if the current buffer is not empty. */
3869 if (!NILP (Vcoding_system_for_read
))
3870 coding_system
= Vcoding_system_for_read
;
3873 /* Don't try looking inside a file for a coding system
3874 specification if it is not seekable. */
3875 if (! not_regular
&& ! NILP (Vset_auto_coding_function
))
3877 /* Find a coding system specified in the heading two
3878 lines or in the tailing several lines of the file.
3879 We assume that the 1K-byte and 3K-byte for heading
3880 and tailing respectively are sufficient for this
3884 if (st
.st_size
<= (1024 * 4))
3885 nread
= emacs_read (fd
, read_buf
, 1024 * 4);
3888 nread
= emacs_read (fd
, read_buf
, 1024);
3891 if (lseek (fd
, st
.st_size
- (1024 * 3), 0) < 0)
3892 report_file_error ("Setting file position",
3893 Fcons (orig_filename
, Qnil
));
3894 nread
+= emacs_read (fd
, read_buf
+ nread
, 1024 * 3);
3899 error ("IO error reading %s: %s",
3900 SDATA (orig_filename
), emacs_strerror (errno
));
3903 struct buffer
*prev
= current_buffer
;
3907 record_unwind_protect (Fset_buffer
, Fcurrent_buffer ());
3909 buffer
= Fget_buffer_create (build_string (" *code-converting-work*"));
3910 buf
= XBUFFER (buffer
);
3912 delete_all_overlays (buf
);
3913 buf
->directory
= current_buffer
->directory
;
3914 buf
->read_only
= Qnil
;
3915 buf
->filename
= Qnil
;
3916 buf
->undo_list
= Qt
;
3917 eassert (buf
->overlays_before
== NULL
);
3918 eassert (buf
->overlays_after
== NULL
);
3920 set_buffer_internal (buf
);
3922 buf
->enable_multibyte_characters
= Qnil
;
3924 insert_1_both (read_buf
, nread
, nread
, 0, 0, 0);
3925 TEMP_SET_PT_BOTH (BEG
, BEG_BYTE
);
3926 coding_system
= call2 (Vset_auto_coding_function
,
3927 filename
, make_number (nread
));
3928 set_buffer_internal (prev
);
3930 /* Discard the unwind protect for recovering the
3934 /* Rewind the file for the actual read done later. */
3935 if (lseek (fd
, 0, 0) < 0)
3936 report_file_error ("Setting file position",
3937 Fcons (orig_filename
, Qnil
));
3941 if (NILP (coding_system
))
3943 /* If we have not yet decided a coding system, check
3944 file-coding-system-alist. */
3945 Lisp_Object args
[6];
3947 args
[0] = Qinsert_file_contents
, args
[1] = orig_filename
;
3948 args
[2] = visit
, args
[3] = beg
, args
[4] = end
, args
[5] = replace
;
3949 coding_system
= Ffind_operation_coding_system (6, args
);
3950 if (CONSP (coding_system
))
3951 coding_system
= XCAR (coding_system
);
3955 if (NILP (coding_system
))
3956 coding_system
= Qundecided
;
3958 CHECK_CODING_SYSTEM (coding_system
);
3960 if (NILP (current_buffer
->enable_multibyte_characters
))
3961 /* We must suppress all character code conversion except for
3962 end-of-line conversion. */
3963 coding_system
= raw_text_coding_system (coding_system
);
3965 setup_coding_system (coding_system
, &coding
);
3966 /* Ensure we set Vlast_coding_system_used. */
3967 set_coding_system
= 1;
3970 /* If requested, replace the accessible part of the buffer
3971 with the file contents. Avoid replacing text at the
3972 beginning or end of the buffer that matches the file contents;
3973 that preserves markers pointing to the unchanged parts.
3975 Here we implement this feature in an optimized way
3976 for the case where code conversion is NOT needed.
3977 The following if-statement handles the case of conversion
3978 in a less optimal way.
3980 If the code conversion is "automatic" then we try using this
3981 method and hope for the best.
3982 But if we discover the need for conversion, we give up on this method
3983 and let the following if-statement handle the replace job. */
3986 && (NILP (coding_system
)
3987 || ! CODING_REQUIRE_DECODING (&coding
)))
3989 /* same_at_start and same_at_end count bytes,
3990 because file access counts bytes
3991 and BEG and END count bytes. */
3992 int same_at_start
= BEGV_BYTE
;
3993 int same_at_end
= ZV_BYTE
;
3995 /* There is still a possibility we will find the need to do code
3996 conversion. If that happens, we set this variable to 1 to
3997 give up on handling REPLACE in the optimized way. */
3998 int giveup_match_end
= 0;
4000 if (XINT (beg
) != 0)
4002 if (lseek (fd
, XINT (beg
), 0) < 0)
4003 report_file_error ("Setting file position",
4004 Fcons (orig_filename
, Qnil
));
4009 /* Count how many chars at the start of the file
4010 match the text at the beginning of the buffer. */
4015 nread
= emacs_read (fd
, buffer
, sizeof buffer
);
4017 error ("IO error reading %s: %s",
4018 SDATA (orig_filename
), emacs_strerror (errno
));
4019 else if (nread
== 0)
4022 if (CODING_REQUIRE_DETECTION (&coding
))
4024 coding_system
= detect_coding_system (buffer
, nread
, nread
, 1, 0,
4026 setup_coding_system (coding_system
, &coding
);
4029 if (CODING_REQUIRE_DECODING (&coding
))
4030 /* We found that the file should be decoded somehow.
4031 Let's give up here. */
4033 giveup_match_end
= 1;
4038 while (bufpos
< nread
&& same_at_start
< ZV_BYTE
4039 && FETCH_BYTE (same_at_start
) == buffer
[bufpos
])
4040 same_at_start
++, bufpos
++;
4041 /* If we found a discrepancy, stop the scan.
4042 Otherwise loop around and scan the next bufferful. */
4043 if (bufpos
!= nread
)
4047 /* If the file matches the buffer completely,
4048 there's no need to replace anything. */
4049 if (same_at_start
- BEGV_BYTE
== XINT (end
))
4053 /* Truncate the buffer to the size of the file. */
4054 del_range_1 (same_at_start
, same_at_end
, 0, 0);
4059 /* Count how many chars at the end of the file
4060 match the text at the end of the buffer. But, if we have
4061 already found that decoding is necessary, don't waste time. */
4062 while (!giveup_match_end
)
4064 int total_read
, nread
, bufpos
, curpos
, trial
;
4066 /* At what file position are we now scanning? */
4067 curpos
= XINT (end
) - (ZV_BYTE
- same_at_end
);
4068 /* If the entire file matches the buffer tail, stop the scan. */
4071 /* How much can we scan in the next step? */
4072 trial
= min (curpos
, sizeof buffer
);
4073 if (lseek (fd
, curpos
- trial
, 0) < 0)
4074 report_file_error ("Setting file position",
4075 Fcons (orig_filename
, Qnil
));
4077 total_read
= nread
= 0;
4078 while (total_read
< trial
)
4080 nread
= emacs_read (fd
, buffer
+ total_read
, trial
- total_read
);
4082 error ("IO error reading %s: %s",
4083 SDATA (orig_filename
), emacs_strerror (errno
));
4084 else if (nread
== 0)
4086 total_read
+= nread
;
4089 /* Scan this bufferful from the end, comparing with
4090 the Emacs buffer. */
4091 bufpos
= total_read
;
4093 /* Compare with same_at_start to avoid counting some buffer text
4094 as matching both at the file's beginning and at the end. */
4095 while (bufpos
> 0 && same_at_end
> same_at_start
4096 && FETCH_BYTE (same_at_end
- 1) == buffer
[bufpos
- 1])
4097 same_at_end
--, bufpos
--;
4099 /* If we found a discrepancy, stop the scan.
4100 Otherwise loop around and scan the preceding bufferful. */
4103 /* If this discrepancy is because of code conversion,
4104 we cannot use this method; giveup and try the other. */
4105 if (same_at_end
> same_at_start
4106 && FETCH_BYTE (same_at_end
- 1) >= 0200
4107 && ! NILP (current_buffer
->enable_multibyte_characters
)
4108 && (CODING_MAY_REQUIRE_DECODING (&coding
)))
4109 giveup_match_end
= 1;
4118 if (! giveup_match_end
)
4122 /* We win! We can handle REPLACE the optimized way. */
4124 /* Extend the start of non-matching text area to multibyte
4125 character boundary. */
4126 if (! NILP (current_buffer
->enable_multibyte_characters
))
4127 while (same_at_start
> BEGV_BYTE
4128 && ! CHAR_HEAD_P (FETCH_BYTE (same_at_start
)))
4131 /* Extend the end of non-matching text area to multibyte
4132 character boundary. */
4133 if (! NILP (current_buffer
->enable_multibyte_characters
))
4134 while (same_at_end
< ZV_BYTE
4135 && ! CHAR_HEAD_P (FETCH_BYTE (same_at_end
)))
4138 /* Don't try to reuse the same piece of text twice. */
4139 overlap
= (same_at_start
- BEGV_BYTE
4140 - (same_at_end
+ st
.st_size
- ZV
));
4142 same_at_end
+= overlap
;
4144 /* Arrange to read only the nonmatching middle part of the file. */
4145 XSETFASTINT (beg
, XINT (beg
) + (same_at_start
- BEGV_BYTE
));
4146 XSETFASTINT (end
, XINT (end
) - (ZV_BYTE
- same_at_end
));
4148 del_range_byte (same_at_start
, same_at_end
, 0);
4149 /* Insert from the file at the proper position. */
4150 temp
= BYTE_TO_CHAR (same_at_start
);
4151 SET_PT_BOTH (temp
, same_at_start
);
4153 /* If display currently starts at beginning of line,
4154 keep it that way. */
4155 if (XBUFFER (XWINDOW (selected_window
)->buffer
) == current_buffer
)
4156 XWINDOW (selected_window
)->start_at_line_beg
= Fbolp ();
4158 replace_handled
= 1;
4162 /* If requested, replace the accessible part of the buffer
4163 with the file contents. Avoid replacing text at the
4164 beginning or end of the buffer that matches the file contents;
4165 that preserves markers pointing to the unchanged parts.
4167 Here we implement this feature for the case where code conversion
4168 is needed, in a simple way that needs a lot of memory.
4169 The preceding if-statement handles the case of no conversion
4170 in a more optimized way. */
4171 if (!NILP (replace
) && ! replace_handled
&& BEGV
< ZV
)
4173 int same_at_start
= BEGV_BYTE
;
4174 int same_at_end
= ZV_BYTE
;
4175 int same_at_start_charpos
;
4179 unsigned char *decoded
;
4181 int this_count
= SPECPDL_INDEX ();
4182 int multibyte
= ! NILP (current_buffer
->enable_multibyte_characters
);
4183 Lisp_Object conversion_buffer
;
4185 conversion_buffer
= code_conversion_save (1, multibyte
);
4187 /* First read the whole file, performing code conversion into
4188 CONVERSION_BUFFER. */
4190 if (lseek (fd
, XINT (beg
), 0) < 0)
4191 report_file_error ("Setting file position",
4192 Fcons (orig_filename
, Qnil
));
4194 total
= st
.st_size
; /* Total bytes in the file. */
4195 how_much
= 0; /* Bytes read from file so far. */
4196 inserted
= 0; /* Bytes put into CONVERSION_BUFFER so far. */
4197 unprocessed
= 0; /* Bytes not processed in previous loop. */
4199 GCPRO1 (conversion_buffer
);
4200 while (how_much
< total
)
4202 /* We read one bunch by one (READ_BUF_SIZE bytes) to allow
4203 quitting while reading a huge while. */
4204 /* try is reserved in some compilers (Microsoft C) */
4205 int trytry
= min (total
- how_much
, READ_BUF_SIZE
- unprocessed
);
4208 /* Allow quitting out of the actual I/O. */
4211 this = emacs_read (fd
, read_buf
+ unprocessed
, trytry
);
4223 BUF_SET_PT (XBUFFER (conversion_buffer
),
4224 BUF_Z (XBUFFER (conversion_buffer
)));
4225 decode_coding_c_string (&coding
, read_buf
, unprocessed
+ this,
4227 unprocessed
= coding
.carryover_bytes
;
4228 if (coding
.carryover_bytes
> 0)
4229 bcopy (coding
.carryover
, read_buf
, unprocessed
);
4234 /* At this point, HOW_MUCH should equal TOTAL, or should be <= 0
4235 if we couldn't read the file. */
4240 error ("IO error reading %s: %s",
4241 SDATA (orig_filename
), emacs_strerror (errno
));
4242 else if (how_much
== -2)
4243 error ("maximum buffer size exceeded");
4246 if (unprocessed
> 0)
4248 coding
.mode
|= CODING_MODE_LAST_BLOCK
;
4249 decode_coding_c_string (&coding
, read_buf
, unprocessed
,
4251 coding
.mode
&= ~CODING_MODE_LAST_BLOCK
;
4254 decoded
= BUF_BEG_ADDR (XBUFFER (conversion_buffer
));
4255 inserted
= (BUF_Z_BYTE (XBUFFER (conversion_buffer
))
4256 - BUF_BEG_BYTE (XBUFFER (conversion_buffer
)));
4258 /* Compare the beginning of the converted string with the buffer
4262 while (bufpos
< inserted
&& same_at_start
< same_at_end
4263 && FETCH_BYTE (same_at_start
) == decoded
[bufpos
])
4264 same_at_start
++, bufpos
++;
4266 /* If the file matches the head of buffer completely,
4267 there's no need to replace anything. */
4269 if (bufpos
== inserted
)
4272 /* Truncate the buffer to the size of the file. */
4273 del_range_byte (same_at_start
, same_at_end
, 0);
4276 unbind_to (this_count
, Qnil
);
4280 /* Extend the start of non-matching text area to the previous
4281 multibyte character boundary. */
4282 if (! NILP (current_buffer
->enable_multibyte_characters
))
4283 while (same_at_start
> BEGV_BYTE
4284 && ! CHAR_HEAD_P (FETCH_BYTE (same_at_start
)))
4287 /* Scan this bufferful from the end, comparing with
4288 the Emacs buffer. */
4291 /* Compare with same_at_start to avoid counting some buffer text
4292 as matching both at the file's beginning and at the end. */
4293 while (bufpos
> 0 && same_at_end
> same_at_start
4294 && FETCH_BYTE (same_at_end
- 1) == decoded
[bufpos
- 1])
4295 same_at_end
--, bufpos
--;
4297 /* Extend the end of non-matching text area to the next
4298 multibyte character boundary. */
4299 if (! NILP (current_buffer
->enable_multibyte_characters
))
4300 while (same_at_end
< ZV_BYTE
4301 && ! CHAR_HEAD_P (FETCH_BYTE (same_at_end
)))
4304 /* Don't try to reuse the same piece of text twice. */
4305 overlap
= same_at_start
- BEGV_BYTE
- (same_at_end
+ inserted
- ZV_BYTE
);
4307 same_at_end
+= overlap
;
4309 /* If display currently starts at beginning of line,
4310 keep it that way. */
4311 if (XBUFFER (XWINDOW (selected_window
)->buffer
) == current_buffer
)
4312 XWINDOW (selected_window
)->start_at_line_beg
= Fbolp ();
4314 /* Replace the chars that we need to replace,
4315 and update INSERTED to equal the number of bytes
4316 we are taking from the decoded string. */
4317 inserted
-= (ZV_BYTE
- same_at_end
) + (same_at_start
- BEGV_BYTE
);
4319 if (same_at_end
!= same_at_start
)
4321 del_range_byte (same_at_start
, same_at_end
, 0);
4323 same_at_start
= GPT_BYTE
;
4327 temp
= BYTE_TO_CHAR (same_at_start
);
4329 /* Insert from the file at the proper position. */
4330 SET_PT_BOTH (temp
, same_at_start
);
4331 same_at_start_charpos
4332 = buf_bytepos_to_charpos (XBUFFER (conversion_buffer
),
4335 = (buf_bytepos_to_charpos (XBUFFER (conversion_buffer
),
4336 same_at_start
+ inserted
)
4337 - same_at_start_charpos
);
4338 insert_from_buffer (XBUFFER (conversion_buffer
),
4339 same_at_start_charpos
, inserted_chars
, 0);
4340 /* Set `inserted' to the number of inserted characters. */
4341 inserted
= PT
- temp
;
4343 unbind_to (this_count
, Qnil
);
4350 register Lisp_Object temp
;
4352 total
= XINT (end
) - XINT (beg
);
4354 /* Make sure point-max won't overflow after this insertion. */
4355 XSETINT (temp
, total
);
4356 if (total
!= XINT (temp
))
4357 error ("Maximum buffer size exceeded");
4360 /* For a special file, all we can do is guess. */
4361 total
= READ_BUF_SIZE
;
4363 if (NILP (visit
) && total
> 0)
4364 prepare_to_modify_buffer (PT
, PT
, NULL
);
4367 if (GAP_SIZE
< total
)
4368 make_gap (total
- GAP_SIZE
);
4370 if (XINT (beg
) != 0 || !NILP (replace
))
4372 if (lseek (fd
, XINT (beg
), 0) < 0)
4373 report_file_error ("Setting file position",
4374 Fcons (orig_filename
, Qnil
));
4377 /* In the following loop, HOW_MUCH contains the total bytes read so
4378 far for a regular file, and not changed for a special file. But,
4379 before exiting the loop, it is set to a negative value if I/O
4383 /* Total bytes inserted. */
4386 /* Here, we don't do code conversion in the loop. It is done by
4387 decode_coding_gap after all data are read into the buffer. */
4389 int gap_size
= GAP_SIZE
;
4391 while (how_much
< total
)
4393 /* try is reserved in some compilers (Microsoft C) */
4394 int trytry
= min (total
- how_much
, READ_BUF_SIZE
);
4401 /* Maybe make more room. */
4402 if (gap_size
< trytry
)
4404 make_gap (total
- gap_size
);
4405 gap_size
= GAP_SIZE
;
4408 /* Read from the file, capturing `quit'. When an
4409 error occurs, end the loop, and arrange for a quit
4410 to be signaled after decoding the text we read. */
4411 non_regular_fd
= fd
;
4412 non_regular_inserted
= inserted
;
4413 non_regular_nbytes
= trytry
;
4414 val
= internal_condition_case_1 (read_non_regular
, Qnil
, Qerror
,
4415 read_non_regular_quit
);
4426 /* Allow quitting out of the actual I/O. We don't make text
4427 part of the buffer until all the reading is done, so a C-g
4428 here doesn't do any harm. */
4431 this = emacs_read (fd
, BEG_ADDR
+ PT_BYTE
- BEG_BYTE
+ inserted
, trytry
);
4443 /* For a regular file, where TOTAL is the real size,
4444 count HOW_MUCH to compare with it.
4445 For a special file, where TOTAL is just a buffer size,
4446 so don't bother counting in HOW_MUCH.
4447 (INSERTED is where we count the number of characters inserted.) */
4454 /* Make the text read part of the buffer. */
4455 GAP_SIZE
-= inserted
;
4457 GPT_BYTE
+= inserted
;
4459 ZV_BYTE
+= inserted
;
4464 /* Put an anchor to ensure multi-byte form ends at gap. */
4469 /* Discard the unwind protect for closing the file. */
4473 error ("IO error reading %s: %s",
4474 SDATA (orig_filename
), emacs_strerror (errno
));
4478 if (NILP (coding_system
))
4480 /* The coding system is not yet decided. Decide it by an
4481 optimized method for handling `coding:' tag.
4483 Note that we can get here only if the buffer was empty
4484 before the insertion. */
4486 if (!NILP (Vcoding_system_for_read
))
4487 coding_system
= Vcoding_system_for_read
;
4490 /* Since we are sure that the current buffer was empty
4491 before the insertion, we can toggle
4492 enable-multibyte-characters directly here without taking
4493 care of marker adjustment. By this way, we can run Lisp
4494 program safely before decoding the inserted text. */
4495 Lisp_Object unwind_data
;
4496 int count
= SPECPDL_INDEX ();
4498 unwind_data
= Fcons (current_buffer
->enable_multibyte_characters
,
4499 Fcons (current_buffer
->undo_list
,
4500 Fcurrent_buffer ()));
4501 current_buffer
->enable_multibyte_characters
= Qnil
;
4502 current_buffer
->undo_list
= Qt
;
4503 record_unwind_protect (decide_coding_unwind
, unwind_data
);
4505 if (inserted
> 0 && ! NILP (Vset_auto_coding_function
))
4507 coding_system
= call2 (Vset_auto_coding_function
,
4508 filename
, make_number (inserted
));
4511 if (NILP (coding_system
))
4513 /* If the coding system is not yet decided, check
4514 file-coding-system-alist. */
4515 Lisp_Object args
[6];
4517 args
[0] = Qinsert_file_contents
, args
[1] = orig_filename
;
4518 args
[2] = visit
, args
[3] = beg
, args
[4] = end
, args
[5] = Qnil
;
4519 coding_system
= Ffind_operation_coding_system (6, args
);
4520 if (CONSP (coding_system
))
4521 coding_system
= XCAR (coding_system
);
4523 unbind_to (count
, Qnil
);
4524 inserted
= Z_BYTE
- BEG_BYTE
;
4527 if (NILP (coding_system
))
4528 coding_system
= Qundecided
;
4530 CHECK_CODING_SYSTEM (coding_system
);
4532 if (NILP (current_buffer
->enable_multibyte_characters
))
4533 /* We must suppress all character code conversion except for
4534 end-of-line conversion. */
4535 coding_system
= raw_text_coding_system (coding_system
);
4536 setup_coding_system (coding_system
, &coding
);
4537 /* Ensure we set Vlast_coding_system_used. */
4538 set_coding_system
= 1;
4543 /* When we visit a file by raw-text, we change the buffer to
4545 if (CODING_FOR_UNIBYTE (&coding
)
4546 /* Can't do this if part of the buffer might be preserved. */
4548 /* Visiting a file with these coding system makes the buffer
4550 current_buffer
->enable_multibyte_characters
= Qnil
;
4553 coding
.dst_multibyte
= ! NILP (current_buffer
->enable_multibyte_characters
);
4554 if (CODING_MAY_REQUIRE_DECODING (&coding
)
4555 && (inserted
> 0 || CODING_REQUIRE_FLUSHING (&coding
)))
4557 move_gap_both (PT
, PT_BYTE
);
4558 GAP_SIZE
+= inserted
;
4559 ZV_BYTE
-= inserted
;
4563 decode_coding_gap (&coding
, inserted
, inserted
);
4564 inserted
= coding
.produced_char
;
4565 coding_system
= CODING_ID_NAME (coding
.id
);
4567 else if (inserted
> 0)
4568 adjust_after_insert (PT
, PT_BYTE
, PT
+ inserted
, PT_BYTE
+ inserted
,
4571 /* Now INSERTED is measured in characters. */
4574 /* Use the conversion type to determine buffer-file-type
4575 (find-buffer-file-type is now used to help determine the
4577 if ((VECTORP (CODING_ID_EOL_TYPE (coding
.id
))
4578 || EQ (CODING_ID_EOL_TYPE (coding
.id
), Qunix
))
4579 && ! CODING_REQUIRE_DECODING (&coding
))
4580 current_buffer
->buffer_file_type
= Qt
;
4582 current_buffer
->buffer_file_type
= Qnil
;
4589 if (!EQ (current_buffer
->undo_list
, Qt
))
4590 current_buffer
->undo_list
= Qnil
;
4592 stat (SDATA (filename
), &st
);
4597 current_buffer
->modtime
= st
.st_mtime
;
4598 current_buffer
->filename
= orig_filename
;
4601 SAVE_MODIFF
= MODIFF
;
4602 current_buffer
->auto_save_modified
= MODIFF
;
4603 XSETFASTINT (current_buffer
->save_length
, Z
- BEG
);
4604 #ifdef CLASH_DETECTION
4607 if (!NILP (current_buffer
->file_truename
))
4608 unlock_file (current_buffer
->file_truename
);
4609 unlock_file (filename
);
4611 #endif /* CLASH_DETECTION */
4613 Fsignal (Qfile_error
,
4614 Fcons (build_string ("not a regular file"),
4615 Fcons (orig_filename
, Qnil
)));
4618 if (set_coding_system
)
4619 Vlast_coding_system_used
= coding_system
;
4621 if (! NILP (Ffboundp (Qafter_insert_file_set_coding
)))
4623 insval
= call2 (Qafter_insert_file_set_coding
, make_number (inserted
),
4625 if (! NILP (insval
))
4627 CHECK_NUMBER (insval
);
4628 inserted
= XFASTINT (insval
);
4632 /* Decode file format */
4635 int empty_undo_list_p
= 0;
4637 /* If we're anyway going to discard undo information, don't
4638 record it in the first place. The buffer's undo list at this
4639 point is either nil or t when visiting a file. */
4642 empty_undo_list_p
= NILP (current_buffer
->undo_list
);
4643 current_buffer
->undo_list
= Qt
;
4646 insval
= call3 (Qformat_decode
,
4647 Qnil
, make_number (inserted
), visit
);
4648 CHECK_NUMBER (insval
);
4649 inserted
= XFASTINT (insval
);
4652 current_buffer
->undo_list
= empty_undo_list_p
? Qnil
: Qt
;
4655 /* Call after-change hooks for the inserted text, aside from the case
4656 of normal visiting (not with REPLACE), which is done in a new buffer
4657 "before" the buffer is changed. */
4658 if (inserted
> 0 && total
> 0
4659 && (NILP (visit
) || !NILP (replace
)))
4661 signal_after_change (PT
, 0, inserted
);
4662 update_compositions (PT
, PT
, CHECK_BORDER
);
4665 p
= Vafter_insert_file_functions
;
4668 insval
= call1 (XCAR (p
), make_number (inserted
));
4671 CHECK_NUMBER (insval
);
4672 inserted
= XFASTINT (insval
);
4679 && current_buffer
->modtime
== -1)
4681 /* If visiting nonexistent file, return nil. */
4682 report_file_error ("Opening input file", Fcons (orig_filename
, Qnil
));
4686 Fsignal (Qquit
, Qnil
);
4688 /* ??? Retval needs to be dealt with in all cases consistently. */
4690 val
= Fcons (orig_filename
,
4691 Fcons (make_number (inserted
),
4694 RETURN_UNGCPRO (unbind_to (count
, val
));
4697 static Lisp_Object build_annotations
P_ ((Lisp_Object
, Lisp_Object
));
4699 /* If build_annotations switched buffers, switch back to BUF.
4700 Kill the temporary buffer that was selected in the meantime.
4702 Since this kill only the last temporary buffer, some buffers remain
4703 not killed if build_annotations switched buffers more than once.
4707 build_annotations_unwind (buf
)
4712 if (XBUFFER (buf
) == current_buffer
)
4714 tembuf
= Fcurrent_buffer ();
4716 Fkill_buffer (tembuf
);
4720 /* Decide the coding-system to encode the data with. */
4723 choose_write_coding_system (start
, end
, filename
,
4724 append
, visit
, lockname
, coding
)
4725 Lisp_Object start
, end
, filename
, append
, visit
, lockname
;
4726 struct coding_system
*coding
;
4731 && NILP (Fstring_equal (current_buffer
->filename
,
4732 current_buffer
->auto_save_file_name
)))
4734 else if (!NILP (Vcoding_system_for_write
))
4736 val
= Vcoding_system_for_write
;
4737 if (coding_system_require_warning
4738 && !NILP (Ffboundp (Vselect_safe_coding_system_function
)))
4739 /* Confirm that VAL can surely encode the current region. */
4740 val
= call5 (Vselect_safe_coding_system_function
,
4741 start
, end
, Fcons (Qt
, Fcons (val
, Qnil
)),
4746 /* If the variable `buffer-file-coding-system' is set locally,
4747 it means that the file was read with some kind of code
4748 conversion or the variable is explicitly set by users. We
4749 had better write it out with the same coding system even if
4750 `enable-multibyte-characters' is nil.
4752 If it is not set locally, we anyway have to convert EOL
4753 format if the default value of `buffer-file-coding-system'
4754 tells that it is not Unix-like (LF only) format. */
4755 int using_default_coding
= 0;
4756 int force_raw_text
= 0;
4758 val
= current_buffer
->buffer_file_coding_system
;
4760 || NILP (Flocal_variable_p (Qbuffer_file_coding_system
, Qnil
)))
4763 if (NILP (current_buffer
->enable_multibyte_characters
))
4769 /* Check file-coding-system-alist. */
4770 Lisp_Object args
[7], coding_systems
;
4772 args
[0] = Qwrite_region
; args
[1] = start
; args
[2] = end
;
4773 args
[3] = filename
; args
[4] = append
; args
[5] = visit
;
4775 coding_systems
= Ffind_operation_coding_system (7, args
);
4776 if (CONSP (coding_systems
) && !NILP (XCDR (coding_systems
)))
4777 val
= XCDR (coding_systems
);
4782 /* If we still have not decided a coding system, use the
4783 default value of buffer-file-coding-system. */
4784 val
= current_buffer
->buffer_file_coding_system
;
4785 using_default_coding
= 1;
4788 if (! NILP (val
) && ! force_raw_text
)
4790 Lisp_Object spec
, attrs
;
4792 CHECK_CODING_SYSTEM_GET_SPEC (val
, spec
);
4793 attrs
= AREF (spec
, 0);
4794 if (EQ (CODING_ATTR_TYPE (attrs
), Qraw_text
))
4799 && !NILP (Ffboundp (Vselect_safe_coding_system_function
)))
4800 /* Confirm that VAL can surely encode the current region. */
4801 val
= call5 (Vselect_safe_coding_system_function
,
4802 start
, end
, val
, Qnil
, filename
);
4804 /* If the decided coding-system doesn't specify end-of-line
4805 format, we use that of
4806 `default-buffer-file-coding-system'. */
4807 if (! using_default_coding
4808 && ! NILP (buffer_defaults
.buffer_file_coding_system
))
4809 val
= (coding_inherit_eol_type
4810 (val
, buffer_defaults
.buffer_file_coding_system
));
4812 /* If we decide not to encode text, use `raw-text' or one of its
4815 val
= raw_text_coding_system (val
);
4818 setup_coding_system (val
, coding
);
4820 && VECTORP (CODING_ID_EOL_TYPE (coding
->id
)))
4821 val
= AREF (CODING_ID_EOL_TYPE (coding
->id
), 0);
4823 if (!STRINGP (start
) && !NILP (current_buffer
->selective_display
))
4824 coding
->mode
|= CODING_MODE_SELECTIVE_DISPLAY
;
4828 DEFUN ("write-region", Fwrite_region
, Swrite_region
, 3, 7,
4829 "r\nFWrite region to file: \ni\ni\ni\np",
4830 doc
: /* Write current region into specified file.
4831 When called from a program, requires three arguments:
4832 START, END and FILENAME. START and END are normally buffer positions
4833 specifying the part of the buffer to write.
4834 If START is nil, that means to use the entire buffer contents.
4835 If START is a string, then output that string to the file
4836 instead of any buffer contents; END is ignored.
4838 Optional fourth argument APPEND if non-nil means
4839 append to existing file contents (if any). If it is an integer,
4840 seek to that offset in the file before writing.
4841 Optional fifth argument VISIT, if t or a string, means
4842 set the last-save-file-modtime of buffer to this file's modtime
4843 and mark buffer not modified.
4844 If VISIT is a string, it is a second file name;
4845 the output goes to FILENAME, but the buffer is marked as visiting VISIT.
4846 VISIT is also the file name to lock and unlock for clash detection.
4847 If VISIT is neither t nor nil nor a string,
4848 that means do not display the \"Wrote file\" message.
4849 The optional sixth arg LOCKNAME, if non-nil, specifies the name to
4850 use for locking and unlocking, overriding FILENAME and VISIT.
4851 The optional seventh arg MUSTBENEW, if non-nil, insists on a check
4852 for an existing file with the same name. If MUSTBENEW is `excl',
4853 that means to get an error if the file already exists; never overwrite.
4854 If MUSTBENEW is neither nil nor `excl', that means ask for
4855 confirmation before overwriting, but do go ahead and overwrite the file
4856 if the user confirms.
4858 This does code conversion according to the value of
4859 `coding-system-for-write', `buffer-file-coding-system', or
4860 `file-coding-system-alist', and sets the variable
4861 `last-coding-system-used' to the coding system actually used. */)
4862 (start
, end
, filename
, append
, visit
, lockname
, mustbenew
)
4863 Lisp_Object start
, end
, filename
, append
, visit
, lockname
, mustbenew
;
4868 const unsigned char *fn
;
4870 int count
= SPECPDL_INDEX ();
4873 unsigned char *fname
= 0; /* If non-0, original filename (must rename) */
4875 Lisp_Object handler
;
4876 Lisp_Object visit_file
;
4877 Lisp_Object annotations
;
4878 Lisp_Object encoded_filename
;
4879 int visiting
= (EQ (visit
, Qt
) || STRINGP (visit
));
4880 int quietly
= !NILP (visit
);
4881 struct gcpro gcpro1
, gcpro2
, gcpro3
, gcpro4
, gcpro5
;
4882 struct buffer
*given_buffer
;
4884 int buffer_file_type
= O_BINARY
;
4886 struct coding_system coding
;
4888 if (current_buffer
->base_buffer
&& visiting
)
4889 error ("Cannot do file visiting in an indirect buffer");
4891 if (!NILP (start
) && !STRINGP (start
))
4892 validate_region (&start
, &end
);
4894 GCPRO5 (start
, filename
, visit
, visit_file
, lockname
);
4896 filename
= Fexpand_file_name (filename
, Qnil
);
4898 if (!NILP (mustbenew
) && !EQ (mustbenew
, Qexcl
))
4899 barf_or_query_if_file_exists (filename
, "overwrite", 1, 0, 1);
4901 if (STRINGP (visit
))
4902 visit_file
= Fexpand_file_name (visit
, Qnil
);
4904 visit_file
= filename
;
4906 if (NILP (lockname
))
4907 lockname
= visit_file
;
4911 /* If the file name has special constructs in it,
4912 call the corresponding file handler. */
4913 handler
= Ffind_file_name_handler (filename
, Qwrite_region
);
4914 /* If FILENAME has no handler, see if VISIT has one. */
4915 if (NILP (handler
) && STRINGP (visit
))
4916 handler
= Ffind_file_name_handler (visit
, Qwrite_region
);
4918 if (!NILP (handler
))
4921 val
= call6 (handler
, Qwrite_region
, start
, end
,
4922 filename
, append
, visit
);
4926 SAVE_MODIFF
= MODIFF
;
4927 XSETFASTINT (current_buffer
->save_length
, Z
- BEG
);
4928 current_buffer
->filename
= visit_file
;
4934 record_unwind_protect (save_restriction_restore
, save_restriction_save ());
4936 /* Special kludge to simplify auto-saving. */
4939 XSETFASTINT (start
, BEG
);
4940 XSETFASTINT (end
, Z
);
4944 record_unwind_protect (build_annotations_unwind
, Fcurrent_buffer ());
4945 count1
= SPECPDL_INDEX ();
4947 given_buffer
= current_buffer
;
4949 if (!STRINGP (start
))
4951 annotations
= build_annotations (start
, end
);
4953 if (current_buffer
!= given_buffer
)
4955 XSETFASTINT (start
, BEGV
);
4956 XSETFASTINT (end
, ZV
);
4962 GCPRO5 (start
, filename
, annotations
, visit_file
, lockname
);
4964 /* Decide the coding-system to encode the data with.
4965 We used to make this choice before calling build_annotations, but that
4966 leads to problems when a write-annotate-function takes care of
4967 unsavable chars (as was the case with X-Symbol). */
4968 Vlast_coding_system_used
4969 = choose_write_coding_system (start
, end
, filename
,
4970 append
, visit
, lockname
, &coding
);
4972 #ifdef CLASH_DETECTION
4975 #if 0 /* This causes trouble for GNUS. */
4976 /* If we've locked this file for some other buffer,
4977 query before proceeding. */
4978 if (!visiting
&& EQ (Ffile_locked_p (lockname
), Qt
))
4979 call2 (intern ("ask-user-about-lock"), filename
, Vuser_login_name
);
4982 lock_file (lockname
);
4984 #endif /* CLASH_DETECTION */
4986 encoded_filename
= ENCODE_FILE (filename
);
4988 fn
= SDATA (encoded_filename
);
4992 desc
= emacs_open (fn
, O_WRONLY
| buffer_file_type
, 0);
4993 #else /* not DOS_NT */
4994 desc
= emacs_open (fn
, O_WRONLY
, 0);
4995 #endif /* not DOS_NT */
4997 if (desc
< 0 && (NILP (append
) || errno
== ENOENT
))
4999 if (auto_saving
) /* Overwrite any previous version of autosave file */
5001 vms_truncate (fn
); /* if fn exists, truncate to zero length */
5002 desc
= emacs_open (fn
, O_RDWR
, 0);
5004 desc
= creat_copy_attrs (STRINGP (current_buffer
->filename
)
5005 ? SDATA (current_buffer
->filename
) : 0,
5008 else /* Write to temporary name and rename if no errors */
5010 Lisp_Object temp_name
;
5011 temp_name
= Ffile_name_directory (filename
);
5013 if (!NILP (temp_name
))
5015 temp_name
= Fmake_temp_name (concat2 (temp_name
,
5016 build_string ("$$SAVE$$")));
5017 fname
= SDATA (filename
);
5018 fn
= SDATA (temp_name
);
5019 desc
= creat_copy_attrs (fname
, fn
);
5022 /* If we can't open the temporary file, try creating a new
5023 version of the original file. VMS "creat" creates a
5024 new version rather than truncating an existing file. */
5027 desc
= creat (fn
, 0666);
5028 #if 0 /* This can clobber an existing file and fail to replace it,
5029 if the user runs out of space. */
5032 /* We can't make a new version;
5033 try to truncate and rewrite existing version if any. */
5035 desc
= emacs_open (fn
, O_RDWR
, 0);
5041 desc
= creat (fn
, 0666);
5045 desc
= emacs_open (fn
,
5046 O_WRONLY
| O_CREAT
| buffer_file_type
5047 | (EQ (mustbenew
, Qexcl
) ? O_EXCL
: O_TRUNC
),
5048 S_IREAD
| S_IWRITE
);
5049 #else /* not DOS_NT */
5050 desc
= emacs_open (fn
, O_WRONLY
| O_TRUNC
| O_CREAT
5051 | (EQ (mustbenew
, Qexcl
) ? O_EXCL
: 0),
5052 auto_saving
? auto_save_mode_bits
: 0666);
5053 #endif /* not DOS_NT */
5054 #endif /* not VMS */
5058 #ifdef CLASH_DETECTION
5060 if (!auto_saving
) unlock_file (lockname
);
5062 #endif /* CLASH_DETECTION */
5064 report_file_error ("Opening output file", Fcons (filename
, Qnil
));
5067 record_unwind_protect (close_file_unwind
, make_number (desc
));
5069 if (!NILP (append
) && !NILP (Ffile_regular_p (filename
)))
5073 if (NUMBERP (append
))
5074 ret
= lseek (desc
, XINT (append
), 1);
5076 ret
= lseek (desc
, 0, 2);
5079 #ifdef CLASH_DETECTION
5080 if (!auto_saving
) unlock_file (lockname
);
5081 #endif /* CLASH_DETECTION */
5083 report_file_error ("Lseek error", Fcons (filename
, Qnil
));
5091 * Kludge Warning: The VMS C RTL likes to insert carriage returns
5092 * if we do writes that don't end with a carriage return. Furthermore
5093 * it cannot handle writes of more then 16K. The modified
5094 * version of "sys_write" in SYSDEP.C (see comment there) copes with
5095 * this EXCEPT for the last record (iff it doesn't end with a carriage
5096 * return). This implies that if your buffer doesn't end with a carriage
5097 * return, you get one free... tough. However it also means that if
5098 * we make two calls to sys_write (a la the following code) you can
5099 * get one at the gap as well. The easiest way to fix this (honest)
5100 * is to move the gap to the next newline (or the end of the buffer).
5105 if (GPT
> BEG
&& GPT_ADDR
[-1] != '\n')
5106 move_gap (find_next_newline (GPT
, 1));
5109 /* The new encoding routine doesn't require the following. */
5111 /* Whether VMS or not, we must move the gap to the next of newline
5112 when we must put designation sequences at beginning of line. */
5113 if (INTEGERP (start
)
5114 && coding
.type
== coding_type_iso2022
5115 && coding
.flags
& CODING_FLAG_ISO_DESIGNATE_AT_BOL
5116 && GPT
> BEG
&& GPT_ADDR
[-1] != '\n')
5118 int opoint
= PT
, opoint_byte
= PT_BYTE
;
5119 scan_newline (PT
, PT_BYTE
, ZV
, ZV_BYTE
, 1, 0);
5120 move_gap_both (PT
, PT_BYTE
);
5121 SET_PT_BOTH (opoint
, opoint_byte
);
5129 if (STRINGP (start
))
5131 failure
= 0 > a_write (desc
, start
, 0, SCHARS (start
),
5132 &annotations
, &coding
);
5135 else if (XINT (start
) != XINT (end
))
5137 failure
= 0 > a_write (desc
, Qnil
,
5138 XINT (start
), XINT (end
) - XINT (start
),
5139 &annotations
, &coding
);
5144 /* If file was empty, still need to write the annotations */
5145 coding
.mode
|= CODING_MODE_LAST_BLOCK
;
5146 failure
= 0 > a_write (desc
, Qnil
, XINT (end
), 0, &annotations
, &coding
);
5150 if (CODING_REQUIRE_FLUSHING (&coding
)
5151 && !(coding
.mode
& CODING_MODE_LAST_BLOCK
)
5154 /* We have to flush out a data. */
5155 coding
.mode
|= CODING_MODE_LAST_BLOCK
;
5156 failure
= 0 > e_write (desc
, Qnil
, 1, 1, &coding
);
5163 /* Note fsync appears to change the modtime on BSD4.2 (both vax and sun).
5164 Disk full in NFS may be reported here. */
5165 /* mib says that closing the file will try to write as fast as NFS can do
5166 it, and that means the fsync here is not crucial for autosave files. */
5167 if (!auto_saving
&& fsync (desc
) < 0)
5169 /* If fsync fails with EINTR, don't treat that as serious. */
5171 failure
= 1, save_errno
= errno
;
5175 /* Spurious "file has changed on disk" warnings have been
5176 observed on Suns as well.
5177 It seems that `close' can change the modtime, under nfs.
5179 (This has supposedly been fixed in Sunos 4,
5180 but who knows about all the other machines with NFS?) */
5183 /* On VMS and APOLLO, must do the stat after the close
5184 since closing changes the modtime. */
5187 /* Recall that #if defined does not work on VMS. */
5194 /* NFS can report a write failure now. */
5195 if (emacs_close (desc
) < 0)
5196 failure
= 1, save_errno
= errno
;
5199 /* If we wrote to a temporary name and had no errors, rename to real name. */
5203 failure
= (rename (fn
, fname
) != 0), save_errno
= errno
;
5211 /* Discard the unwind protect for close_file_unwind. */
5212 specpdl_ptr
= specpdl
+ count1
;
5213 /* Restore the original current buffer. */
5214 visit_file
= unbind_to (count
, visit_file
);
5216 #ifdef CLASH_DETECTION
5218 unlock_file (lockname
);
5219 #endif /* CLASH_DETECTION */
5221 /* Do this before reporting IO error
5222 to avoid a "file has changed on disk" warning on
5223 next attempt to save. */
5225 current_buffer
->modtime
= st
.st_mtime
;
5228 error ("IO error writing %s: %s", SDATA (filename
),
5229 emacs_strerror (save_errno
));
5233 SAVE_MODIFF
= MODIFF
;
5234 XSETFASTINT (current_buffer
->save_length
, Z
- BEG
);
5235 current_buffer
->filename
= visit_file
;
5236 update_mode_lines
++;
5241 && ! NILP (Fstring_equal (current_buffer
->filename
,
5242 current_buffer
->auto_save_file_name
)))
5243 SAVE_MODIFF
= MODIFF
;
5249 message_with_string ((INTEGERP (append
)
5259 Lisp_Object
merge ();
5261 DEFUN ("car-less-than-car", Fcar_less_than_car
, Scar_less_than_car
, 2, 2, 0,
5262 doc
: /* Return t if (car A) is numerically less than (car B). */)
5266 return Flss (Fcar (a
), Fcar (b
));
5269 /* Build the complete list of annotations appropriate for writing out
5270 the text between START and END, by calling all the functions in
5271 write-region-annotate-functions and merging the lists they return.
5272 If one of these functions switches to a different buffer, we assume
5273 that buffer contains altered text. Therefore, the caller must
5274 make sure to restore the current buffer in all cases,
5275 as save-excursion would do. */
5278 build_annotations (start
, end
)
5279 Lisp_Object start
, end
;
5281 Lisp_Object annotations
;
5283 struct gcpro gcpro1
, gcpro2
;
5284 Lisp_Object original_buffer
;
5285 int i
, used_global
= 0;
5287 XSETBUFFER (original_buffer
, current_buffer
);
5290 p
= Vwrite_region_annotate_functions
;
5291 GCPRO2 (annotations
, p
);
5294 struct buffer
*given_buffer
= current_buffer
;
5295 if (EQ (Qt
, XCAR (p
)) && !used_global
)
5296 { /* Use the global value of the hook. */
5299 arg
[0] = Fdefault_value (Qwrite_region_annotate_functions
);
5301 p
= Fappend (2, arg
);
5304 Vwrite_region_annotations_so_far
= annotations
;
5305 res
= call2 (XCAR (p
), start
, end
);
5306 /* If the function makes a different buffer current,
5307 assume that means this buffer contains altered text to be output.
5308 Reset START and END from the buffer bounds
5309 and discard all previous annotations because they should have
5310 been dealt with by this function. */
5311 if (current_buffer
!= given_buffer
)
5313 XSETFASTINT (start
, BEGV
);
5314 XSETFASTINT (end
, ZV
);
5317 Flength (res
); /* Check basic validity of return value */
5318 annotations
= merge (annotations
, res
, Qcar_less_than_car
);
5322 /* Now do the same for annotation functions implied by the file-format */
5323 if (auto_saving
&& (!EQ (current_buffer
->auto_save_file_format
, Qt
)))
5324 p
= current_buffer
->auto_save_file_format
;
5326 p
= current_buffer
->file_format
;
5327 for (i
= 0; CONSP (p
); p
= XCDR (p
), ++i
)
5329 struct buffer
*given_buffer
= current_buffer
;
5331 Vwrite_region_annotations_so_far
= annotations
;
5333 /* Value is either a list of annotations or nil if the function
5334 has written annotations to a temporary buffer, which is now
5336 res
= call5 (Qformat_annotate_function
, XCAR (p
), start
, end
,
5337 original_buffer
, make_number (i
));
5338 if (current_buffer
!= given_buffer
)
5340 XSETFASTINT (start
, BEGV
);
5341 XSETFASTINT (end
, ZV
);
5346 annotations
= merge (annotations
, res
, Qcar_less_than_car
);
5354 /* Write to descriptor DESC the NCHARS chars starting at POS of STRING.
5355 If STRING is nil, POS is the character position in the current buffer.
5356 Intersperse with them the annotations from *ANNOT
5357 which fall within the range of POS to POS + NCHARS,
5358 each at its appropriate position.
5360 We modify *ANNOT by discarding elements as we use them up.
5362 The return value is negative in case of system call failure. */
5365 a_write (desc
, string
, pos
, nchars
, annot
, coding
)
5368 register int nchars
;
5371 struct coding_system
*coding
;
5375 int lastpos
= pos
+ nchars
;
5377 while (NILP (*annot
) || CONSP (*annot
))
5379 tem
= Fcar_safe (Fcar (*annot
));
5382 nextpos
= XFASTINT (tem
);
5384 /* If there are no more annotations in this range,
5385 output the rest of the range all at once. */
5386 if (! (nextpos
>= pos
&& nextpos
<= lastpos
))
5387 return e_write (desc
, string
, pos
, lastpos
, coding
);
5389 /* Output buffer text up to the next annotation's position. */
5392 if (0 > e_write (desc
, string
, pos
, nextpos
, coding
))
5396 /* Output the annotation. */
5397 tem
= Fcdr (Fcar (*annot
));
5400 if (0 > e_write (desc
, tem
, 0, SCHARS (tem
), coding
))
5403 *annot
= Fcdr (*annot
);
5409 /* Write text in the range START and END into descriptor DESC,
5410 encoding them with coding system CODING. If STRING is nil, START
5411 and END are character positions of the current buffer, else they
5412 are indexes to the string STRING. */
5415 e_write (desc
, string
, start
, end
, coding
)
5419 struct coding_system
*coding
;
5421 if (STRINGP (string
))
5424 end
= SCHARS (string
);
5427 /* We used to have a code for handling selective display here. But,
5428 now it is handled within encode_coding. */
5432 if (STRINGP (string
))
5434 coding
->src_multibyte
= SCHARS (string
) < SBYTES (string
);
5435 if (CODING_REQUIRE_ENCODING (coding
))
5437 encode_coding_object (coding
, string
,
5438 start
, string_char_to_byte (string
, start
),
5439 end
, string_char_to_byte (string
, end
), Qt
);
5443 coding
->dst_object
= string
;
5444 coding
->consumed_char
= SCHARS (string
);
5445 coding
->produced
= SBYTES (string
);
5450 int start_byte
= CHAR_TO_BYTE (start
);
5451 int end_byte
= CHAR_TO_BYTE (end
);
5453 coding
->src_multibyte
= (end
- start
) < (end_byte
- start_byte
);
5454 if (CODING_REQUIRE_ENCODING (coding
))
5456 encode_coding_object (coding
, Fcurrent_buffer (),
5457 start
, start_byte
, end
, end_byte
, Qt
);
5461 coding
->dst_object
= Qnil
;
5462 coding
->dst_pos_byte
= start_byte
;
5463 if (start
>= GPT
|| end
<= GPT
)
5465 coding
->consumed_char
= end
- start
;
5466 coding
->produced
= end_byte
- start_byte
;
5470 coding
->consumed_char
= GPT
- start
;
5471 coding
->produced
= GPT_BYTE
- start_byte
;
5476 if (coding
->produced
> 0)
5480 STRINGP (coding
->dst_object
)
5481 ? SDATA (coding
->dst_object
)
5482 : BYTE_POS_ADDR (coding
->dst_pos_byte
),
5485 if (coding
->produced
)
5488 start
+= coding
->consumed_char
;
5494 DEFUN ("verify-visited-file-modtime", Fverify_visited_file_modtime
,
5495 Sverify_visited_file_modtime
, 1, 1, 0,
5496 doc
: /* Return t if last mod time of BUF's visited file matches what BUF records.
5497 This means that the file has not been changed since it was visited or saved.
5498 See Info node `(elisp)Modification Time' for more details. */)
5504 Lisp_Object handler
;
5505 Lisp_Object filename
;
5510 if (!STRINGP (b
->filename
)) return Qt
;
5511 if (b
->modtime
== 0) return Qt
;
5513 /* If the file name has special constructs in it,
5514 call the corresponding file handler. */
5515 handler
= Ffind_file_name_handler (b
->filename
,
5516 Qverify_visited_file_modtime
);
5517 if (!NILP (handler
))
5518 return call2 (handler
, Qverify_visited_file_modtime
, buf
);
5520 filename
= ENCODE_FILE (b
->filename
);
5522 if (stat (SDATA (filename
), &st
) < 0)
5524 /* If the file doesn't exist now and didn't exist before,
5525 we say that it isn't modified, provided the error is a tame one. */
5526 if (errno
== ENOENT
|| errno
== EACCES
|| errno
== ENOTDIR
)
5531 if (st
.st_mtime
== b
->modtime
5532 /* If both are positive, accept them if they are off by one second. */
5533 || (st
.st_mtime
> 0 && b
->modtime
> 0
5534 && (st
.st_mtime
== b
->modtime
+ 1
5535 || st
.st_mtime
== b
->modtime
- 1)))
5540 DEFUN ("clear-visited-file-modtime", Fclear_visited_file_modtime
,
5541 Sclear_visited_file_modtime
, 0, 0, 0,
5542 doc
: /* Clear out records of last mod time of visited file.
5543 Next attempt to save will certainly not complain of a discrepancy. */)
5546 current_buffer
->modtime
= 0;
5550 DEFUN ("visited-file-modtime", Fvisited_file_modtime
,
5551 Svisited_file_modtime
, 0, 0, 0,
5552 doc
: /* Return the current buffer's recorded visited file modification time.
5553 The value is a list of the form (HIGH LOW), like the time values
5554 that `file-attributes' returns. If the current buffer has no recorded
5555 file modification time, this function returns 0.
5556 See Info node `(elisp)Modification Time' for more details. */)
5560 tcons
= long_to_cons ((unsigned long) current_buffer
->modtime
);
5562 return list2 (XCAR (tcons
), XCDR (tcons
));
5566 DEFUN ("set-visited-file-modtime", Fset_visited_file_modtime
,
5567 Sset_visited_file_modtime
, 0, 1, 0,
5568 doc
: /* Update buffer's recorded modification time from the visited file's time.
5569 Useful if the buffer was not read from the file normally
5570 or if the file itself has been changed for some known benign reason.
5571 An argument specifies the modification time value to use
5572 \(instead of that of the visited file), in the form of a list
5573 \(HIGH . LOW) or (HIGH LOW). */)
5575 Lisp_Object time_list
;
5577 if (!NILP (time_list
))
5578 current_buffer
->modtime
= cons_to_long (time_list
);
5581 register Lisp_Object filename
;
5583 Lisp_Object handler
;
5585 filename
= Fexpand_file_name (current_buffer
->filename
, Qnil
);
5587 /* If the file name has special constructs in it,
5588 call the corresponding file handler. */
5589 handler
= Ffind_file_name_handler (filename
, Qset_visited_file_modtime
);
5590 if (!NILP (handler
))
5591 /* The handler can find the file name the same way we did. */
5592 return call2 (handler
, Qset_visited_file_modtime
, Qnil
);
5594 filename
= ENCODE_FILE (filename
);
5596 if (stat (SDATA (filename
), &st
) >= 0)
5597 current_buffer
->modtime
= st
.st_mtime
;
5604 auto_save_error (error
)
5607 Lisp_Object args
[3], msg
;
5609 struct gcpro gcpro1
;
5613 args
[0] = build_string ("Auto-saving %s: %s");
5614 args
[1] = current_buffer
->name
;
5615 args
[2] = Ferror_message_string (error
);
5616 msg
= Fformat (3, args
);
5618 nbytes
= SBYTES (msg
);
5620 for (i
= 0; i
< 3; ++i
)
5623 message2 (SDATA (msg
), nbytes
, STRING_MULTIBYTE (msg
));
5625 message2_nolog (SDATA (msg
), nbytes
, STRING_MULTIBYTE (msg
));
5626 Fsleep_for (make_number (1), Qnil
);
5639 auto_save_mode_bits
= 0666;
5641 /* Get visited file's mode to become the auto save file's mode. */
5642 if (! NILP (current_buffer
->filename
))
5644 if (stat (SDATA (current_buffer
->filename
), &st
) >= 0)
5645 /* But make sure we can overwrite it later! */
5646 auto_save_mode_bits
= st
.st_mode
| 0600;
5647 else if ((modes
= Ffile_modes (current_buffer
->filename
),
5649 /* Remote files don't cooperate with stat. */
5650 auto_save_mode_bits
= XINT (modes
) | 0600;
5654 Fwrite_region (Qnil
, Qnil
,
5655 current_buffer
->auto_save_file_name
,
5656 Qnil
, Qlambda
, Qnil
, Qnil
);
5660 do_auto_save_unwind (stream
) /* used as unwind-protect function */
5665 fclose ((FILE *) (XFASTINT (XCAR (stream
)) << 16
5666 | XFASTINT (XCDR (stream
))));
5671 do_auto_save_unwind_1 (value
) /* used as unwind-protect function */
5674 minibuffer_auto_raise
= XINT (value
);
5679 do_auto_save_make_dir (dir
)
5682 return call2 (Qmake_directory
, dir
, Qt
);
5686 do_auto_save_eh (ignore
)
5692 DEFUN ("do-auto-save", Fdo_auto_save
, Sdo_auto_save
, 0, 2, "",
5693 doc
: /* Auto-save all buffers that need it.
5694 This is all buffers that have auto-saving enabled
5695 and are changed since last auto-saved.
5696 Auto-saving writes the buffer into a file
5697 so that your editing is not lost if the system crashes.
5698 This file is not the file you visited; that changes only when you save.
5699 Normally we run the normal hook `auto-save-hook' before saving.
5701 A non-nil NO-MESSAGE argument means do not print any message if successful.
5702 A non-nil CURRENT-ONLY argument means save only current buffer. */)
5703 (no_message
, current_only
)
5704 Lisp_Object no_message
, current_only
;
5706 struct buffer
*old
= current_buffer
, *b
;
5707 Lisp_Object tail
, buf
;
5709 int do_handled_files
;
5712 Lisp_Object lispstream
;
5713 int count
= SPECPDL_INDEX ();
5714 int orig_minibuffer_auto_raise
= minibuffer_auto_raise
;
5715 int old_message_p
= 0;
5716 struct gcpro gcpro1
, gcpro2
;
5718 if (max_specpdl_size
< specpdl_size
+ 40)
5719 max_specpdl_size
= specpdl_size
+ 40;
5724 if (NILP (no_message
))
5726 old_message_p
= push_message ();
5727 record_unwind_protect (pop_message_unwind
, Qnil
);
5730 /* Ordinarily don't quit within this function,
5731 but don't make it impossible to quit (in case we get hung in I/O). */
5735 /* No GCPRO needed, because (when it matters) all Lisp_Object variables
5736 point to non-strings reached from Vbuffer_alist. */
5738 if (!NILP (Vrun_hooks
))
5739 call1 (Vrun_hooks
, intern ("auto-save-hook"));
5741 if (STRINGP (Vauto_save_list_file_name
))
5743 Lisp_Object listfile
;
5745 listfile
= Fexpand_file_name (Vauto_save_list_file_name
, Qnil
);
5747 /* Don't try to create the directory when shutting down Emacs,
5748 because creating the directory might signal an error, and
5749 that would leave Emacs in a strange state. */
5750 if (!NILP (Vrun_hooks
))
5754 GCPRO2 (dir
, listfile
);
5755 dir
= Ffile_name_directory (listfile
);
5756 if (NILP (Ffile_directory_p (dir
)))
5757 internal_condition_case_1 (do_auto_save_make_dir
,
5758 dir
, Fcons (Fcons (Qfile_error
, Qnil
), Qnil
),
5763 stream
= fopen (SDATA (listfile
), "w");
5766 /* Arrange to close that file whether or not we get an error.
5767 Also reset auto_saving to 0. */
5768 lispstream
= Fcons (Qnil
, Qnil
);
5769 XSETCARFASTINT (lispstream
, (EMACS_UINT
)stream
>> 16);
5770 XSETCDRFASTINT (lispstream
, (EMACS_UINT
)stream
& 0xffff);
5781 record_unwind_protect (do_auto_save_unwind
, lispstream
);
5782 record_unwind_protect (do_auto_save_unwind_1
,
5783 make_number (minibuffer_auto_raise
));
5784 minibuffer_auto_raise
= 0;
5787 /* On first pass, save all files that don't have handlers.
5788 On second pass, save all files that do have handlers.
5790 If Emacs is crashing, the handlers may tweak what is causing
5791 Emacs to crash in the first place, and it would be a shame if
5792 Emacs failed to autosave perfectly ordinary files because it
5793 couldn't handle some ange-ftp'd file. */
5795 for (do_handled_files
= 0; do_handled_files
< 2; do_handled_files
++)
5796 for (tail
= Vbuffer_alist
; GC_CONSP (tail
); tail
= XCDR (tail
))
5798 buf
= XCDR (XCAR (tail
));
5801 /* Record all the buffers that have auto save mode
5802 in the special file that lists them. For each of these buffers,
5803 Record visited name (if any) and auto save name. */
5804 if (STRINGP (b
->auto_save_file_name
)
5805 && stream
!= NULL
&& do_handled_files
== 0)
5807 if (!NILP (b
->filename
))
5809 fwrite (SDATA (b
->filename
), 1,
5810 SBYTES (b
->filename
), stream
);
5812 putc ('\n', stream
);
5813 fwrite (SDATA (b
->auto_save_file_name
), 1,
5814 SBYTES (b
->auto_save_file_name
), stream
);
5815 putc ('\n', stream
);
5818 if (!NILP (current_only
)
5819 && b
!= current_buffer
)
5822 /* Don't auto-save indirect buffers.
5823 The base buffer takes care of it. */
5827 /* Check for auto save enabled
5828 and file changed since last auto save
5829 and file changed since last real save. */
5830 if (STRINGP (b
->auto_save_file_name
)
5831 && BUF_SAVE_MODIFF (b
) < BUF_MODIFF (b
)
5832 && b
->auto_save_modified
< BUF_MODIFF (b
)
5833 /* -1 means we've turned off autosaving for a while--see below. */
5834 && XINT (b
->save_length
) >= 0
5835 && (do_handled_files
5836 || NILP (Ffind_file_name_handler (b
->auto_save_file_name
,
5839 EMACS_TIME before_time
, after_time
;
5841 EMACS_GET_TIME (before_time
);
5843 /* If we had a failure, don't try again for 20 minutes. */
5844 if (b
->auto_save_failure_time
>= 0
5845 && EMACS_SECS (before_time
) - b
->auto_save_failure_time
< 1200)
5848 if ((XFASTINT (b
->save_length
) * 10
5849 > (BUF_Z (b
) - BUF_BEG (b
)) * 13)
5850 /* A short file is likely to change a large fraction;
5851 spare the user annoying messages. */
5852 && XFASTINT (b
->save_length
) > 5000
5853 /* These messages are frequent and annoying for `*mail*'. */
5854 && !EQ (b
->filename
, Qnil
)
5855 && NILP (no_message
))
5857 /* It has shrunk too much; turn off auto-saving here. */
5858 minibuffer_auto_raise
= orig_minibuffer_auto_raise
;
5859 message_with_string ("Buffer %s has shrunk a lot; auto save disabled in that buffer until next real save",
5861 minibuffer_auto_raise
= 0;
5862 /* Turn off auto-saving until there's a real save,
5863 and prevent any more warnings. */
5864 XSETINT (b
->save_length
, -1);
5865 Fsleep_for (make_number (1), Qnil
);
5868 set_buffer_internal (b
);
5869 if (!auto_saved
&& NILP (no_message
))
5870 message1 ("Auto-saving...");
5871 internal_condition_case (auto_save_1
, Qt
, auto_save_error
);
5873 b
->auto_save_modified
= BUF_MODIFF (b
);
5874 XSETFASTINT (current_buffer
->save_length
, Z
- BEG
);
5875 set_buffer_internal (old
);
5877 EMACS_GET_TIME (after_time
);
5879 /* If auto-save took more than 60 seconds,
5880 assume it was an NFS failure that got a timeout. */
5881 if (EMACS_SECS (after_time
) - EMACS_SECS (before_time
) > 60)
5882 b
->auto_save_failure_time
= EMACS_SECS (after_time
);
5886 /* Prevent another auto save till enough input events come in. */
5887 record_auto_save ();
5889 if (auto_saved
&& NILP (no_message
))
5893 /* If we are going to restore an old message,
5894 give time to read ours. */
5895 sit_for (1, 0, 0, 0, 0);
5899 /* If we displayed a message and then restored a state
5900 with no message, leave a "done" message on the screen. */
5901 message1 ("Auto-saving...done");
5906 /* This restores the message-stack status. */
5907 unbind_to (count
, Qnil
);
5911 DEFUN ("set-buffer-auto-saved", Fset_buffer_auto_saved
,
5912 Sset_buffer_auto_saved
, 0, 0, 0,
5913 doc
: /* Mark current buffer as auto-saved with its current text.
5914 No auto-save file will be written until the buffer changes again. */)
5917 current_buffer
->auto_save_modified
= MODIFF
;
5918 XSETFASTINT (current_buffer
->save_length
, Z
- BEG
);
5919 current_buffer
->auto_save_failure_time
= -1;
5923 DEFUN ("clear-buffer-auto-save-failure", Fclear_buffer_auto_save_failure
,
5924 Sclear_buffer_auto_save_failure
, 0, 0, 0,
5925 doc
: /* Clear any record of a recent auto-save failure in the current buffer. */)
5928 current_buffer
->auto_save_failure_time
= -1;
5932 DEFUN ("recent-auto-save-p", Frecent_auto_save_p
, Srecent_auto_save_p
,
5934 doc
: /* Return t if buffer has been auto-saved since last read in or saved. */)
5937 return (SAVE_MODIFF
< current_buffer
->auto_save_modified
) ? Qt
: Qnil
;
5940 /* Reading and completing file names */
5941 extern Lisp_Object
Ffile_name_completion (), Ffile_name_all_completions ();
5943 /* In the string VAL, change each $ to $$ and return the result. */
5946 double_dollars (val
)
5949 register const unsigned char *old
;
5950 register unsigned char *new;
5954 osize
= SBYTES (val
);
5956 /* Count the number of $ characters. */
5957 for (n
= osize
, count
= 0, old
= SDATA (val
); n
> 0; n
--)
5958 if (*old
++ == '$') count
++;
5962 val
= make_uninit_multibyte_string (SCHARS (val
) + count
,
5965 for (n
= osize
; n
> 0; n
--)
5979 read_file_name_cleanup (arg
)
5982 return (current_buffer
->directory
= arg
);
5985 DEFUN ("read-file-name-internal", Fread_file_name_internal
, Sread_file_name_internal
,
5987 doc
: /* Internal subroutine for read-file-name. Do not call this. */)
5988 (string
, dir
, action
)
5989 Lisp_Object string
, dir
, action
;
5990 /* action is nil for complete, t for return list of completions,
5991 lambda for verify final value */
5993 Lisp_Object name
, specdir
, realdir
, val
, orig_string
;
5995 struct gcpro gcpro1
, gcpro2
, gcpro3
, gcpro4
, gcpro5
;
5997 CHECK_STRING (string
);
6004 /* No need to protect ACTION--we only compare it with t and nil. */
6005 GCPRO5 (string
, realdir
, name
, specdir
, orig_string
);
6007 if (SCHARS (string
) == 0)
6009 if (EQ (action
, Qlambda
))
6017 orig_string
= string
;
6018 string
= Fsubstitute_in_file_name (string
);
6019 changed
= NILP (Fstring_equal (string
, orig_string
));
6020 name
= Ffile_name_nondirectory (string
);
6021 val
= Ffile_name_directory (string
);
6023 realdir
= Fexpand_file_name (val
, realdir
);
6028 specdir
= Ffile_name_directory (string
);
6029 val
= Ffile_name_completion (name
, realdir
);
6034 return double_dollars (string
);
6038 if (!NILP (specdir
))
6039 val
= concat2 (specdir
, val
);
6041 return double_dollars (val
);
6044 #endif /* not VMS */
6048 if (EQ (action
, Qt
))
6050 Lisp_Object all
= Ffile_name_all_completions (name
, realdir
);
6054 if (NILP (Vread_file_name_predicate
)
6055 || EQ (Vread_file_name_predicate
, Qfile_exists_p
))
6059 if (EQ (Vread_file_name_predicate
, Qfile_directory_p
))
6061 /* Brute-force speed up for directory checking:
6062 Discard strings which don't end in a slash. */
6063 for (comp
= Qnil
; CONSP (all
); all
= XCDR (all
))
6065 Lisp_Object tem
= XCAR (all
);
6067 if (STRINGP (tem
) &&
6068 (len
= SCHARS (tem
), len
> 0) &&
6069 IS_DIRECTORY_SEP (SREF (tem
, len
-1)))
6070 comp
= Fcons (tem
, comp
);
6076 /* Must do it the hard (and slow) way. */
6077 GCPRO3 (all
, comp
, specdir
);
6078 count
= SPECPDL_INDEX ();
6079 record_unwind_protect (read_file_name_cleanup
, current_buffer
->directory
);
6080 current_buffer
->directory
= realdir
;
6081 for (comp
= Qnil
; CONSP (all
); all
= XCDR (all
))
6082 if (!NILP (call1 (Vread_file_name_predicate
, XCAR (all
))))
6083 comp
= Fcons (XCAR (all
), comp
);
6084 unbind_to (count
, Qnil
);
6087 return Fnreverse (comp
);
6090 /* Only other case actually used is ACTION = lambda */
6092 /* Supposedly this helps commands such as `cd' that read directory names,
6093 but can someone explain how it helps them? -- RMS */
6094 if (SCHARS (name
) == 0)
6097 string
= Fexpand_file_name (string
, dir
);
6098 if (!NILP (Vread_file_name_predicate
))
6099 return call1 (Vread_file_name_predicate
, string
);
6100 return Ffile_exists_p (string
);
6103 DEFUN ("next-read-file-uses-dialog-p", Fnext_read_file_uses_dialog_p
,
6104 Snext_read_file_uses_dialog_p
, 0, 0, 0,
6105 doc
: /* Return t if a call to `read-file-name' will use a dialog.
6106 The return value is only relevant for a call to `read-file-name' that happens
6107 before any other event (mouse or keypress) is handeled. */)
6110 #if defined (USE_MOTIF) || defined (HAVE_NTGUI) || defined (USE_GTK) || defined (HAVE_CARBON)
6111 if ((NILP (last_nonmenu_event
) || CONSP (last_nonmenu_event
))
6120 DEFUN ("read-file-name", Fread_file_name
, Sread_file_name
, 1, 6, 0,
6121 doc
: /* Read file name, prompting with PROMPT and completing in directory DIR.
6122 Value is not expanded---you must call `expand-file-name' yourself.
6123 Default name to DEFAULT-FILENAME if user exits the minibuffer with
6124 the same non-empty string that was inserted by this function.
6125 (If DEFAULT-FILENAME is omitted, the visited file name is used,
6126 except that if INITIAL is specified, that combined with DIR is used.)
6127 If the user exits with an empty minibuffer, this function returns
6128 an empty string. (This can only happen if the user erased the
6129 pre-inserted contents or if `insert-default-directory' is nil.)
6130 Fourth arg MUSTMATCH non-nil means require existing file's name.
6131 Non-nil and non-t means also require confirmation after completion.
6132 Fifth arg INITIAL specifies text to start with.
6133 If optional sixth arg PREDICATE is non-nil, possible completions and
6134 the resulting file name must satisfy (funcall PREDICATE NAME).
6135 DIR should be an absolute directory name. It defaults to the value of
6136 `default-directory'.
6138 If this command was invoked with the mouse, use a file dialog box if
6139 `use-dialog-box' is non-nil, and the window system or X toolkit in use
6140 provides a file dialog box.
6142 See also `read-file-name-completion-ignore-case'
6143 and `read-file-name-function'. */)
6144 (prompt
, dir
, default_filename
, mustmatch
, initial
, predicate
)
6145 Lisp_Object prompt
, dir
, default_filename
, mustmatch
, initial
, predicate
;
6147 Lisp_Object val
, insdef
, tem
;
6148 struct gcpro gcpro1
, gcpro2
;
6149 register char *homedir
;
6150 Lisp_Object decoded_homedir
;
6151 int replace_in_history
= 0;
6152 int add_to_history
= 0;
6156 dir
= current_buffer
->directory
;
6157 if (NILP (Ffile_name_absolute_p (dir
)))
6158 dir
= Fexpand_file_name (dir
, Qnil
);
6159 if (NILP (default_filename
))
6162 ? Fexpand_file_name (initial
, dir
)
6163 : current_buffer
->filename
);
6165 /* If dir starts with user's homedir, change that to ~. */
6166 homedir
= (char *) egetenv ("HOME");
6168 /* homedir can be NULL in temacs, since Vprocess_environment is not
6169 yet set up. We shouldn't crash in that case. */
6172 homedir
= strcpy (alloca (strlen (homedir
) + 1), homedir
);
6173 CORRECT_DIR_SEPS (homedir
);
6178 = DECODE_FILE (make_unibyte_string (homedir
, strlen (homedir
)));
6181 && !strncmp (SDATA (decoded_homedir
), SDATA (dir
),
6182 SBYTES (decoded_homedir
))
6183 && IS_DIRECTORY_SEP (SREF (dir
, SBYTES (decoded_homedir
))))
6185 dir
= Fsubstring (dir
, make_number (SCHARS (decoded_homedir
)), Qnil
);
6186 dir
= concat2 (build_string ("~"), dir
);
6188 /* Likewise for default_filename. */
6190 && STRINGP (default_filename
)
6191 && !strncmp (SDATA (decoded_homedir
), SDATA (default_filename
),
6192 SBYTES (decoded_homedir
))
6193 && IS_DIRECTORY_SEP (SREF (default_filename
, SBYTES (decoded_homedir
))))
6196 = Fsubstring (default_filename
,
6197 make_number (SCHARS (decoded_homedir
)), Qnil
);
6198 default_filename
= concat2 (build_string ("~"), default_filename
);
6200 if (!NILP (default_filename
))
6202 CHECK_STRING (default_filename
);
6203 default_filename
= double_dollars (default_filename
);
6206 if (insert_default_directory
&& STRINGP (dir
))
6209 if (!NILP (initial
))
6211 Lisp_Object args
[2], pos
;
6215 insdef
= Fconcat (2, args
);
6216 pos
= make_number (SCHARS (double_dollars (dir
)));
6217 insdef
= Fcons (double_dollars (insdef
), pos
);
6220 insdef
= double_dollars (insdef
);
6222 else if (STRINGP (initial
))
6223 insdef
= Fcons (double_dollars (initial
), make_number (0));
6227 if (!NILP (Vread_file_name_function
))
6229 Lisp_Object args
[7];
6231 GCPRO2 (insdef
, default_filename
);
6232 args
[0] = Vread_file_name_function
;
6235 args
[3] = default_filename
;
6236 args
[4] = mustmatch
;
6238 args
[6] = predicate
;
6239 RETURN_UNGCPRO (Ffuncall (7, args
));
6242 count
= SPECPDL_INDEX ();
6243 specbind (intern ("completion-ignore-case"),
6244 read_file_name_completion_ignore_case
? Qt
: Qnil
);
6245 specbind (intern ("minibuffer-completing-file-name"), Qt
);
6246 specbind (intern ("read-file-name-predicate"),
6247 (NILP (predicate
) ? Qfile_exists_p
: predicate
));
6249 GCPRO2 (insdef
, default_filename
);
6251 #if defined (USE_MOTIF) || defined (HAVE_NTGUI) || defined (USE_GTK) || defined (HAVE_CARBON)
6252 if (! NILP (Fnext_read_file_uses_dialog_p ()))
6254 /* If DIR contains a file name, split it. */
6256 file
= Ffile_name_nondirectory (dir
);
6257 if (SCHARS (file
) && NILP (default_filename
))
6259 default_filename
= file
;
6260 dir
= Ffile_name_directory (dir
);
6262 if (!NILP(default_filename
))
6263 default_filename
= Fexpand_file_name (default_filename
, dir
);
6264 val
= Fx_file_dialog (prompt
, dir
, default_filename
, mustmatch
,
6265 EQ (predicate
, Qfile_directory_p
) ? Qt
: Qnil
);
6270 val
= Fcompleting_read (prompt
, intern ("read-file-name-internal"),
6271 dir
, mustmatch
, insdef
,
6272 Qfile_name_history
, default_filename
, Qnil
);
6274 tem
= Fsymbol_value (Qfile_name_history
);
6275 if (CONSP (tem
) && EQ (XCAR (tem
), val
))
6276 replace_in_history
= 1;
6278 /* If Fcompleting_read returned the inserted default string itself
6279 (rather than a new string with the same contents),
6280 it has to mean that the user typed RET with the minibuffer empty.
6281 In that case, we really want to return ""
6282 so that commands such as set-visited-file-name can distinguish. */
6283 if (EQ (val
, default_filename
))
6285 /* In this case, Fcompleting_read has not added an element
6286 to the history. Maybe we should. */
6287 if (! replace_in_history
)
6293 unbind_to (count
, Qnil
);
6296 error ("No file name specified");
6298 tem
= Fstring_equal (val
, CONSP (insdef
) ? XCAR (insdef
) : insdef
);
6300 if (!NILP (tem
) && !NILP (default_filename
))
6301 val
= default_filename
;
6302 val
= Fsubstitute_in_file_name (val
);
6304 if (replace_in_history
)
6305 /* Replace what Fcompleting_read added to the history
6306 with what we will actually return. */
6308 Lisp_Object val1
= double_dollars (val
);
6309 tem
= Fsymbol_value (Qfile_name_history
);
6310 if (history_delete_duplicates
)
6311 XSETCDR (tem
, Fdelete (val1
, XCDR(tem
)));
6312 XSETCAR (tem
, val1
);
6314 else if (add_to_history
)
6316 /* Add the value to the history--but not if it matches
6317 the last value already there. */
6318 Lisp_Object val1
= double_dollars (val
);
6319 tem
= Fsymbol_value (Qfile_name_history
);
6320 if (! CONSP (tem
) || NILP (Fequal (XCAR (tem
), val1
)))
6322 if (history_delete_duplicates
) tem
= Fdelete (val1
, tem
);
6323 Fset (Qfile_name_history
, Fcons (val1
, tem
));
6334 /* Must be set before any path manipulation is performed. */
6335 XSETFASTINT (Vdirectory_sep_char
, '/');
6342 Qexpand_file_name
= intern ("expand-file-name");
6343 Qsubstitute_in_file_name
= intern ("substitute-in-file-name");
6344 Qdirectory_file_name
= intern ("directory-file-name");
6345 Qfile_name_directory
= intern ("file-name-directory");
6346 Qfile_name_nondirectory
= intern ("file-name-nondirectory");
6347 Qunhandled_file_name_directory
= intern ("unhandled-file-name-directory");
6348 Qfile_name_as_directory
= intern ("file-name-as-directory");
6349 Qcopy_file
= intern ("copy-file");
6350 Qmake_directory_internal
= intern ("make-directory-internal");
6351 Qmake_directory
= intern ("make-directory");
6352 Qdelete_directory
= intern ("delete-directory");
6353 Qdelete_file
= intern ("delete-file");
6354 Qrename_file
= intern ("rename-file");
6355 Qadd_name_to_file
= intern ("add-name-to-file");
6356 Qmake_symbolic_link
= intern ("make-symbolic-link");
6357 Qfile_exists_p
= intern ("file-exists-p");
6358 Qfile_executable_p
= intern ("file-executable-p");
6359 Qfile_readable_p
= intern ("file-readable-p");
6360 Qfile_writable_p
= intern ("file-writable-p");
6361 Qfile_symlink_p
= intern ("file-symlink-p");
6362 Qaccess_file
= intern ("access-file");
6363 Qfile_directory_p
= intern ("file-directory-p");
6364 Qfile_regular_p
= intern ("file-regular-p");
6365 Qfile_accessible_directory_p
= intern ("file-accessible-directory-p");
6366 Qfile_modes
= intern ("file-modes");
6367 Qset_file_modes
= intern ("set-file-modes");
6368 Qset_file_times
= intern ("set-file-times");
6369 Qfile_newer_than_file_p
= intern ("file-newer-than-file-p");
6370 Qinsert_file_contents
= intern ("insert-file-contents");
6371 Qwrite_region
= intern ("write-region");
6372 Qverify_visited_file_modtime
= intern ("verify-visited-file-modtime");
6373 Qset_visited_file_modtime
= intern ("set-visited-file-modtime");
6374 Qauto_save_coding
= intern ("auto-save-coding");
6376 staticpro (&Qexpand_file_name
);
6377 staticpro (&Qsubstitute_in_file_name
);
6378 staticpro (&Qdirectory_file_name
);
6379 staticpro (&Qfile_name_directory
);
6380 staticpro (&Qfile_name_nondirectory
);
6381 staticpro (&Qunhandled_file_name_directory
);
6382 staticpro (&Qfile_name_as_directory
);
6383 staticpro (&Qcopy_file
);
6384 staticpro (&Qmake_directory_internal
);
6385 staticpro (&Qmake_directory
);
6386 staticpro (&Qdelete_directory
);
6387 staticpro (&Qdelete_file
);
6388 staticpro (&Qrename_file
);
6389 staticpro (&Qadd_name_to_file
);
6390 staticpro (&Qmake_symbolic_link
);
6391 staticpro (&Qfile_exists_p
);
6392 staticpro (&Qfile_executable_p
);
6393 staticpro (&Qfile_readable_p
);
6394 staticpro (&Qfile_writable_p
);
6395 staticpro (&Qaccess_file
);
6396 staticpro (&Qfile_symlink_p
);
6397 staticpro (&Qfile_directory_p
);
6398 staticpro (&Qfile_regular_p
);
6399 staticpro (&Qfile_accessible_directory_p
);
6400 staticpro (&Qfile_modes
);
6401 staticpro (&Qset_file_modes
);
6402 staticpro (&Qset_file_times
);
6403 staticpro (&Qfile_newer_than_file_p
);
6404 staticpro (&Qinsert_file_contents
);
6405 staticpro (&Qwrite_region
);
6406 staticpro (&Qverify_visited_file_modtime
);
6407 staticpro (&Qset_visited_file_modtime
);
6408 staticpro (&Qauto_save_coding
);
6410 Qfile_name_history
= intern ("file-name-history");
6411 Fset (Qfile_name_history
, Qnil
);
6412 staticpro (&Qfile_name_history
);
6414 Qfile_error
= intern ("file-error");
6415 staticpro (&Qfile_error
);
6416 Qfile_already_exists
= intern ("file-already-exists");
6417 staticpro (&Qfile_already_exists
);
6418 Qfile_date_error
= intern ("file-date-error");
6419 staticpro (&Qfile_date_error
);
6420 Qexcl
= intern ("excl");
6424 Qfind_buffer_file_type
= intern ("find-buffer-file-type");
6425 staticpro (&Qfind_buffer_file_type
);
6428 DEFVAR_LISP ("file-name-coding-system", &Vfile_name_coding_system
,
6429 doc
: /* *Coding system for encoding file names.
6430 If it is nil, `default-file-name-coding-system' (which see) is used. */);
6431 Vfile_name_coding_system
= Qnil
;
6433 DEFVAR_LISP ("default-file-name-coding-system",
6434 &Vdefault_file_name_coding_system
,
6435 doc
: /* Default coding system for encoding file names.
6436 This variable is used only when `file-name-coding-system' is nil.
6438 This variable is set/changed by the command `set-language-environment'.
6439 User should not set this variable manually,
6440 instead use `file-name-coding-system' to get a constant encoding
6441 of file names regardless of the current language environment. */);
6442 Vdefault_file_name_coding_system
= Qnil
;
6444 Qformat_decode
= intern ("format-decode");
6445 staticpro (&Qformat_decode
);
6446 Qformat_annotate_function
= intern ("format-annotate-function");
6447 staticpro (&Qformat_annotate_function
);
6448 Qafter_insert_file_set_coding
= intern ("after-insert-file-set-coding");
6449 staticpro (&Qafter_insert_file_set_coding
);
6451 Qcar_less_than_car
= intern ("car-less-than-car");
6452 staticpro (&Qcar_less_than_car
);
6454 Fput (Qfile_error
, Qerror_conditions
,
6455 Fcons (Qfile_error
, Fcons (Qerror
, Qnil
)));
6456 Fput (Qfile_error
, Qerror_message
,
6457 build_string ("File error"));
6459 Fput (Qfile_already_exists
, Qerror_conditions
,
6460 Fcons (Qfile_already_exists
,
6461 Fcons (Qfile_error
, Fcons (Qerror
, Qnil
))));
6462 Fput (Qfile_already_exists
, Qerror_message
,
6463 build_string ("File already exists"));
6465 Fput (Qfile_date_error
, Qerror_conditions
,
6466 Fcons (Qfile_date_error
,
6467 Fcons (Qfile_error
, Fcons (Qerror
, Qnil
))));
6468 Fput (Qfile_date_error
, Qerror_message
,
6469 build_string ("Cannot set file date"));
6471 DEFVAR_LISP ("read-file-name-function", &Vread_file_name_function
,
6472 doc
: /* If this is non-nil, `read-file-name' does its work by calling this function. */);
6473 Vread_file_name_function
= Qnil
;
6475 DEFVAR_LISP ("read-file-name-predicate", &Vread_file_name_predicate
,
6476 doc
: /* Current predicate used by `read-file-name-internal'. */);
6477 Vread_file_name_predicate
= Qnil
;
6479 DEFVAR_BOOL ("read-file-name-completion-ignore-case", &read_file_name_completion_ignore_case
,
6480 doc
: /* *Non-nil means when reading a file name completion ignores case. */);
6481 #if defined VMS || defined DOS_NT || defined MAC_OS
6482 read_file_name_completion_ignore_case
= 1;
6484 read_file_name_completion_ignore_case
= 0;
6487 DEFVAR_BOOL ("insert-default-directory", &insert_default_directory
,
6488 doc
: /* *Non-nil means when reading a filename start with default dir in minibuffer.
6489 If the initial minibuffer contents are non-empty, you can usually
6490 request a default filename by typing RETURN without editing. For some
6491 commands, exiting with an empty minibuffer has a special meaning,
6492 such as making the current buffer visit no file in the case of
6493 `set-visited-file-name'.
6494 If this variable is non-nil, the minibuffer contents are always
6495 initially non-empty and typing RETURN without editing will fetch the
6496 default name, if one is provided. Note however that this default name
6497 is not necessarily the name originally inserted in the minibuffer, if
6498 that is just the default directory.
6499 If this variable is nil, the minibuffer often starts out empty. In
6500 that case you may have to explicitly fetch the next history element to
6501 request the default name. */);
6502 insert_default_directory
= 1;
6504 DEFVAR_BOOL ("vms-stmlf-recfm", &vms_stmlf_recfm
,
6505 doc
: /* *Non-nil means write new files with record format `stmlf'.
6506 nil means use format `var'. This variable is meaningful only on VMS. */);
6507 vms_stmlf_recfm
= 0;
6509 DEFVAR_LISP ("directory-sep-char", &Vdirectory_sep_char
,
6510 doc
: /* Directory separator character for built-in functions that return file names.
6511 The value is always ?/. Don't use this variable, just use `/'. */);
6513 DEFVAR_LISP ("file-name-handler-alist", &Vfile_name_handler_alist
,
6514 doc
: /* *Alist of elements (REGEXP . HANDLER) for file names handled specially.
6515 If a file name matches REGEXP, then all I/O on that file is done by calling
6518 The first argument given to HANDLER is the name of the I/O primitive
6519 to be handled; the remaining arguments are the arguments that were
6520 passed to that primitive. For example, if you do
6521 (file-exists-p FILENAME)
6522 and FILENAME is handled by HANDLER, then HANDLER is called like this:
6523 (funcall HANDLER 'file-exists-p FILENAME)
6524 The function `find-file-name-handler' checks this list for a handler
6525 for its argument. */);
6526 Vfile_name_handler_alist
= Qnil
;
6528 DEFVAR_LISP ("set-auto-coding-function",
6529 &Vset_auto_coding_function
,
6530 doc
: /* If non-nil, a function to call to decide a coding system of file.
6531 Two arguments are passed to this function: the file name
6532 and the length of a file contents following the point.
6533 This function should return a coding system to decode the file contents.
6534 It should check the file name against `auto-coding-alist'.
6535 If no coding system is decided, it should check a coding system
6536 specified in the heading lines with the format:
6537 -*- ... coding: CODING-SYSTEM; ... -*-
6538 or local variable spec of the tailing lines with `coding:' tag. */);
6539 Vset_auto_coding_function
= Qnil
;
6541 DEFVAR_LISP ("after-insert-file-functions", &Vafter_insert_file_functions
,
6542 doc
: /* A list of functions to be called at the end of `insert-file-contents'.
6543 Each is passed one argument, the number of characters inserted.
6544 It should return the new character count, and leave point the same.
6545 If `insert-file-contents' is intercepted by a handler from
6546 `file-name-handler-alist', that handler is responsible for calling the
6547 functions in `after-insert-file-functions' if appropriate. */);
6548 Vafter_insert_file_functions
= Qnil
;
6550 DEFVAR_LISP ("write-region-annotate-functions", &Vwrite_region_annotate_functions
,
6551 doc
: /* A list of functions to be called at the start of `write-region'.
6552 Each is passed two arguments, START and END as for `write-region'.
6553 These are usually two numbers but not always; see the documentation
6554 for `write-region'. The function should return a list of pairs
6555 of the form (POSITION . STRING), consisting of strings to be effectively
6556 inserted at the specified positions of the file being written (1 means to
6557 insert before the first byte written). The POSITIONs must be sorted into
6558 increasing order. If there are several functions in the list, the several
6559 lists are merged destructively. Alternatively, the function can return
6560 with a different buffer current; in that case it should pay attention
6561 to the annotations returned by previous functions and listed in
6562 `write-region-annotations-so-far'.*/);
6563 Vwrite_region_annotate_functions
= Qnil
;
6564 staticpro (&Qwrite_region_annotate_functions
);
6565 Qwrite_region_annotate_functions
6566 = intern ("write-region-annotate-functions");
6568 DEFVAR_LISP ("write-region-annotations-so-far",
6569 &Vwrite_region_annotations_so_far
,
6570 doc
: /* When an annotation function is called, this holds the previous annotations.
6571 These are the annotations made by other annotation functions
6572 that were already called. See also `write-region-annotate-functions'. */);
6573 Vwrite_region_annotations_so_far
= Qnil
;
6575 DEFVAR_LISP ("inhibit-file-name-handlers", &Vinhibit_file_name_handlers
,
6576 doc
: /* A list of file name handlers that temporarily should not be used.
6577 This applies only to the operation `inhibit-file-name-operation'. */);
6578 Vinhibit_file_name_handlers
= Qnil
;
6580 DEFVAR_LISP ("inhibit-file-name-operation", &Vinhibit_file_name_operation
,
6581 doc
: /* The operation for which `inhibit-file-name-handlers' is applicable. */);
6582 Vinhibit_file_name_operation
= Qnil
;
6584 DEFVAR_LISP ("auto-save-list-file-name", &Vauto_save_list_file_name
,
6585 doc
: /* File name in which we write a list of all auto save file names.
6586 This variable is initialized automatically from `auto-save-list-file-prefix'
6587 shortly after Emacs reads your `.emacs' file, if you have not yet given it
6588 a non-nil value. */);
6589 Vauto_save_list_file_name
= Qnil
;
6591 defsubr (&Sfind_file_name_handler
);
6592 defsubr (&Sfile_name_directory
);
6593 defsubr (&Sfile_name_nondirectory
);
6594 defsubr (&Sunhandled_file_name_directory
);
6595 defsubr (&Sfile_name_as_directory
);
6596 defsubr (&Sdirectory_file_name
);
6597 defsubr (&Smake_temp_name
);
6598 defsubr (&Sexpand_file_name
);
6599 defsubr (&Ssubstitute_in_file_name
);
6600 defsubr (&Scopy_file
);
6601 defsubr (&Smake_directory_internal
);
6602 defsubr (&Sdelete_directory
);
6603 defsubr (&Sdelete_file
);
6604 defsubr (&Srename_file
);
6605 defsubr (&Sadd_name_to_file
);
6607 defsubr (&Smake_symbolic_link
);
6608 #endif /* S_IFLNK */
6610 defsubr (&Sdefine_logical_name
);
6613 defsubr (&Ssysnetunam
);
6614 #endif /* HPUX_NET */
6615 defsubr (&Sfile_name_absolute_p
);
6616 defsubr (&Sfile_exists_p
);
6617 defsubr (&Sfile_executable_p
);
6618 defsubr (&Sfile_readable_p
);
6619 defsubr (&Sfile_writable_p
);
6620 defsubr (&Saccess_file
);
6621 defsubr (&Sfile_symlink_p
);
6622 defsubr (&Sfile_directory_p
);
6623 defsubr (&Sfile_accessible_directory_p
);
6624 defsubr (&Sfile_regular_p
);
6625 defsubr (&Sfile_modes
);
6626 defsubr (&Sset_file_modes
);
6627 defsubr (&Sset_file_times
);
6628 defsubr (&Sset_default_file_modes
);
6629 defsubr (&Sdefault_file_modes
);
6630 defsubr (&Sfile_newer_than_file_p
);
6631 defsubr (&Sinsert_file_contents
);
6632 defsubr (&Swrite_region
);
6633 defsubr (&Scar_less_than_car
);
6634 defsubr (&Sverify_visited_file_modtime
);
6635 defsubr (&Sclear_visited_file_modtime
);
6636 defsubr (&Svisited_file_modtime
);
6637 defsubr (&Sset_visited_file_modtime
);
6638 defsubr (&Sdo_auto_save
);
6639 defsubr (&Sset_buffer_auto_saved
);
6640 defsubr (&Sclear_buffer_auto_save_failure
);
6641 defsubr (&Srecent_auto_save_p
);
6643 defsubr (&Sread_file_name_internal
);
6644 defsubr (&Sread_file_name
);
6645 defsubr (&Snext_read_file_uses_dialog_p
);
6648 defsubr (&Sunix_sync
);
6652 /* arch-tag: 64ba3fd7-f844-4fb2-ba4b-427eb928786c
6653 (do not change this comment) */