1 /* Lisp functions for making directory listings.
2 Copyright (C) 1985, 1986, 1993, 1994, 1999, 2000, 2001, 2002, 2003,
3 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
5 This file is part of GNU Emacs.
7 GNU Emacs is free software: you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation, either version 3 of the License, or
10 (at your option) any later version.
12 GNU Emacs is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
24 #include <sys/types.h>
38 /* The d_nameln member of a struct dirent includes the '\0' character
39 on some systems, but not on others. What's worse, you can't tell
40 at compile-time which one it will be, since it really depends on
41 the sort of system providing the filesystem you're reading from,
42 not the system you are running on. Paul Eggert
43 <eggert@bi.twinsun.com> says this occurs when Emacs is running on a
44 SunOS 4.1.2 host, reading a directory that is remote-mounted from a
45 Solaris 2.1 host and is in a native Solaris 2.1 filesystem.
47 Since applying strlen to the name always works, we'll just do that. */
48 #define NAMLEN(p) strlen (p->d_name)
50 #ifdef SYSV_SYSTEM_DIR
53 #define DIRENTRY struct dirent
55 #else /* not SYSV_SYSTEM_DIR */
66 #define DIRENTRY struct direct
68 extern DIR *opendir ();
69 extern struct direct
*readdir ();
71 #endif /* not MSDOS */
72 #endif /* not SYSV_SYSTEM_DIR */
74 /* Some versions of Cygwin don't have d_ino in `struct dirent'. */
75 #if defined(MSDOS) || defined(__CYGWIN__)
76 #define DIRENTRY_NONEMPTY(p) ((p)->d_name[0] != 0)
78 #define DIRENTRY_NONEMPTY(p) ((p)->d_ino)
85 #include "character.h"
89 #include "blockinput.h"
91 /* Returns a search buffer, with a fastmap allocated and ready to go. */
92 extern struct re_pattern_buffer
*compile_pattern ();
94 /* From filemode.c. Can't go in Lisp.h because of `stat'. */
95 extern void filemodestring
P_ ((struct stat
*, char *));
97 /* if system does not have symbolic links, it does not have lstat.
98 In that case, use ordinary stat instead. */
104 extern int completion_ignore_case
;
105 extern Lisp_Object Qcompletion_ignore_case
;
106 extern Lisp_Object Vcompletion_regexp_list
;
108 Lisp_Object Vcompletion_ignored_extensions
;
109 Lisp_Object Qdirectory_files
;
110 Lisp_Object Qdirectory_files_and_attributes
;
111 Lisp_Object Qfile_name_completion
;
112 Lisp_Object Qfile_name_all_completions
;
113 Lisp_Object Qfile_attributes
;
114 Lisp_Object Qfile_attributes_lessp
;
116 static int scmp
P_ ((unsigned char *, unsigned char *, int));
120 directory_files_internal_unwind (dh
)
123 DIR *d
= (DIR *) XSAVE_VALUE (dh
)->pointer
;
130 /* Function shared by Fdirectory_files and Fdirectory_files_and_attributes.
131 When ATTRS is zero, return a list of directory filenames; when
132 non-zero, return a list of directory filenames and their attributes.
133 In the latter case, ID_FORMAT is passed to Ffile_attributes. */
136 directory_files_internal (directory
, full
, match
, nosort
, attrs
, id_format
)
137 Lisp_Object directory
, full
, match
, nosort
;
139 Lisp_Object id_format
;
142 int directory_nbytes
;
143 Lisp_Object list
, dirfilename
, encoded_directory
;
144 struct re_pattern_buffer
*bufp
= NULL
;
146 int count
= SPECPDL_INDEX ();
147 struct gcpro gcpro1
, gcpro2
, gcpro3
, gcpro4
, gcpro5
;
150 /* Because of file name handlers, these functions might call
151 Ffuncall, and cause a GC. */
152 list
= encoded_directory
= dirfilename
= Qnil
;
153 GCPRO5 (match
, directory
, list
, dirfilename
, encoded_directory
);
154 dirfilename
= Fdirectory_file_name (directory
);
158 CHECK_STRING (match
);
160 /* MATCH might be a flawed regular expression. Rather than
161 catching and signaling our own errors, we just call
162 compile_pattern to do the work for us. */
163 /* Pass 1 for the MULTIBYTE arg
164 because we do make multibyte strings if the contents warrant. */
166 /* Windows users want case-insensitive wildcards. */
167 bufp
= compile_pattern (match
, 0,
168 buffer_defaults
.case_canon_table
, 0, 1);
169 # else /* !WINDOWSNT */
170 bufp
= compile_pattern (match
, 0, Qnil
, 0, 1);
171 # endif /* !WINDOWSNT */
174 /* Note: ENCODE_FILE and DECODE_FILE can GC because they can run
175 run_pre_post_conversion_on_str which calls Lisp directly and
177 if (STRING_MULTIBYTE (dirfilename
))
178 dirfilename
= ENCODE_FILE (dirfilename
);
179 encoded_directory
= (STRING_MULTIBYTE (directory
)
180 ? ENCODE_FILE (directory
) : directory
);
182 /* Now *bufp is the compiled form of MATCH; don't call anything
183 which might compile a new regexp until we're done with the loop! */
186 d
= opendir (SDATA (dirfilename
));
189 report_file_error ("Opening directory", Fcons (directory
, Qnil
));
191 /* Unfortunately, we can now invoke expand-file-name and
192 file-attributes on filenames, both of which can throw, so we must
193 do a proper unwind-protect. */
194 record_unwind_protect (directory_files_internal_unwind
,
195 make_save_value (d
, 0));
197 directory_nbytes
= SBYTES (directory
);
198 re_match_object
= Qt
;
200 /* Decide whether we need to add a directory separator. */
201 if (directory_nbytes
== 0
202 || !IS_ANY_SEP (SREF (directory
, directory_nbytes
- 1)))
205 /* Loop reading blocks until EOF or error. */
224 if (DIRENTRY_NONEMPTY (dp
))
228 Lisp_Object name
, finalname
;
229 struct gcpro gcpro1
, gcpro2
;
232 name
= finalname
= make_unibyte_string (dp
->d_name
, len
);
233 GCPRO2 (finalname
, name
);
235 /* Note: DECODE_FILE can GC; it should protect its argument,
237 name
= DECODE_FILE (name
);
240 /* Now that we have unwind_protect in place, we might as well
241 allow matching to be interrupted. */
246 || (0 <= re_search (bufp
, SDATA (name
), len
, 0, len
, 0)))
255 Lisp_Object fullname
;
256 int nbytes
= len
+ directory_nbytes
+ needsep
;
259 fullname
= make_uninit_multibyte_string (nbytes
, nbytes
);
260 bcopy (SDATA (directory
), SDATA (fullname
),
264 SSET (fullname
, directory_nbytes
, DIRECTORY_SEP
);
267 SDATA (fullname
) + directory_nbytes
+ needsep
,
270 nchars
= chars_in_text (SDATA (fullname
), nbytes
);
272 /* Some bug somewhere. */
276 STRING_SET_CHARS (fullname
, nchars
);
277 if (nchars
== nbytes
)
278 STRING_SET_UNIBYTE (fullname
);
280 finalname
= fullname
;
287 /* Construct an expanded filename for the directory entry.
288 Use the decoded names for input to Ffile_attributes. */
289 Lisp_Object decoded_fullname
, fileattrs
;
290 struct gcpro gcpro1
, gcpro2
;
292 decoded_fullname
= fileattrs
= Qnil
;
293 GCPRO2 (decoded_fullname
, fileattrs
);
295 /* Both Fexpand_file_name and Ffile_attributes can GC. */
296 decoded_fullname
= Fexpand_file_name (name
, directory
);
297 fileattrs
= Ffile_attributes (decoded_fullname
, id_format
);
299 list
= Fcons (Fcons (finalname
, fileattrs
), list
);
303 list
= Fcons (finalname
, list
);
314 /* Discard the unwind protect. */
315 specpdl_ptr
= specpdl
+ count
;
318 list
= Fsort (Fnreverse (list
),
319 attrs
? Qfile_attributes_lessp
: Qstring_lessp
);
321 RETURN_UNGCPRO (list
);
325 DEFUN ("directory-files", Fdirectory_files
, Sdirectory_files
, 1, 4, 0,
326 doc
: /* Return a list of names of files in DIRECTORY.
327 There are three optional arguments:
328 If FULL is non-nil, return absolute file names. Otherwise return names
329 that are relative to the specified directory.
330 If MATCH is non-nil, mention only file names that match the regexp MATCH.
331 If NOSORT is non-nil, the list is not sorted--its order is unpredictable.
332 Otherwise, the list returned is sorted with `stringp-lessp'.
333 NOSORT is useful if you plan to sort the result yourself. */)
334 (directory
, full
, match
, nosort
)
335 Lisp_Object directory
, full
, match
, nosort
;
338 directory
= Fexpand_file_name (directory
, Qnil
);
340 /* If the file name has special constructs in it,
341 call the corresponding file handler. */
342 handler
= Ffind_file_name_handler (directory
, Qdirectory_files
);
344 return call5 (handler
, Qdirectory_files
, directory
,
345 full
, match
, nosort
);
347 return directory_files_internal (directory
, full
, match
, nosort
, 0, Qnil
);
350 DEFUN ("directory-files-and-attributes", Fdirectory_files_and_attributes
,
351 Sdirectory_files_and_attributes
, 1, 5, 0,
352 doc
: /* Return a list of names of files and their attributes in DIRECTORY.
353 There are four optional arguments:
354 If FULL is non-nil, return absolute file names. Otherwise return names
355 that are relative to the specified directory.
356 If MATCH is non-nil, mention only file names that match the regexp MATCH.
357 If NOSORT is non-nil, the list is not sorted--its order is unpredictable.
358 NOSORT is useful if you plan to sort the result yourself.
359 ID-FORMAT specifies the preferred format of attributes uid and gid, see
360 `file-attributes' for further documentation.
361 On MS-Windows, performance depends on `w32-get-true-file-attributes',
363 (directory
, full
, match
, nosort
, id_format
)
364 Lisp_Object directory
, full
, match
, nosort
, id_format
;
367 directory
= Fexpand_file_name (directory
, Qnil
);
369 /* If the file name has special constructs in it,
370 call the corresponding file handler. */
371 handler
= Ffind_file_name_handler (directory
, Qdirectory_files_and_attributes
);
373 return call6 (handler
, Qdirectory_files_and_attributes
,
374 directory
, full
, match
, nosort
, id_format
);
376 return directory_files_internal (directory
, full
, match
, nosort
, 1, id_format
);
380 Lisp_Object
file_name_completion ();
382 DEFUN ("file-name-completion", Ffile_name_completion
, Sfile_name_completion
,
384 doc
: /* Complete file name FILE in directory DIRECTORY.
385 Returns the longest string
386 common to all file names in DIRECTORY that start with FILE.
387 If there is only one and FILE matches it exactly, returns t.
388 Returns nil if DIRECTORY contains no name starting with FILE.
390 If PREDICATE is non-nil, call PREDICATE with each possible
391 completion (in absolute form) and ignore it if PREDICATE returns nil.
393 This function ignores some of the possible completions as
394 determined by the variable `completion-ignored-extensions', which see. */)
395 (file
, directory
, predicate
)
396 Lisp_Object file
, directory
, predicate
;
400 /* If the directory name has special constructs in it,
401 call the corresponding file handler. */
402 handler
= Ffind_file_name_handler (directory
, Qfile_name_completion
);
404 return call4 (handler
, Qfile_name_completion
, file
, directory
, predicate
);
406 /* If the file name has special constructs in it,
407 call the corresponding file handler. */
408 handler
= Ffind_file_name_handler (file
, Qfile_name_completion
);
410 return call4 (handler
, Qfile_name_completion
, file
, directory
, predicate
);
412 return file_name_completion (file
, directory
, 0, 0, predicate
);
415 DEFUN ("file-name-all-completions", Ffile_name_all_completions
,
416 Sfile_name_all_completions
, 2, 2, 0,
417 doc
: /* Return a list of all completions of file name FILE in directory DIRECTORY.
418 These are all file names in directory DIRECTORY which begin with FILE. */)
420 Lisp_Object file
, directory
;
424 /* If the directory name has special constructs in it,
425 call the corresponding file handler. */
426 handler
= Ffind_file_name_handler (directory
, Qfile_name_all_completions
);
428 return call3 (handler
, Qfile_name_all_completions
, file
, directory
);
430 /* If the file name has special constructs in it,
431 call the corresponding file handler. */
432 handler
= Ffind_file_name_handler (file
, Qfile_name_all_completions
);
434 return call3 (handler
, Qfile_name_all_completions
, file
, directory
);
436 return file_name_completion (file
, directory
, 1, 0, Qnil
);
439 static int file_name_completion_stat ();
440 Lisp_Object Qdefault_directory
;
443 file_name_completion (file
, dirname
, all_flag
, ver_flag
, predicate
)
444 Lisp_Object file
, dirname
;
445 int all_flag
, ver_flag
;
446 Lisp_Object predicate
;
449 int bestmatchsize
= 0;
451 /* If ALL_FLAG is 1, BESTMATCH is the list of all matches, decoded.
452 If ALL_FLAG is 0, BESTMATCH is either nil
453 or the best match so far, not decoded. */
454 Lisp_Object bestmatch
, tem
, elt
, name
;
455 Lisp_Object encoded_file
;
456 Lisp_Object encoded_dir
;
459 /* If includeall is zero, exclude files in completion-ignored-extensions as
460 well as "." and "..". Until shown otherwise, assume we can't exclude
463 int count
= SPECPDL_INDEX ();
464 struct gcpro gcpro1
, gcpro2
, gcpro3
, gcpro4
, gcpro5
;
470 #ifdef FILE_SYSTEM_CASE
471 file
= FILE_SYSTEM_CASE (file
);
474 encoded_file
= encoded_dir
= Qnil
;
475 GCPRO5 (file
, dirname
, bestmatch
, encoded_file
, encoded_dir
);
476 dirname
= Fexpand_file_name (dirname
, Qnil
);
477 specbind (Qdefault_directory
, dirname
);
479 /* Do completion on the encoded file name
480 because the other names in the directory are (we presume)
481 encoded likewise. We decode the completed string at the end. */
482 /* Actually, this is not quite true any more: we do most of the completion
483 work with decoded file names, but we still do some filtering based
484 on the encoded file name. */
485 encoded_file
= STRING_MULTIBYTE (file
) ? ENCODE_FILE (file
) : file
;
487 encoded_dir
= ENCODE_FILE (dirname
);
490 d
= opendir (SDATA (Fdirectory_file_name (encoded_dir
)));
493 report_file_error ("Opening directory", Fcons (dirname
, Qnil
));
495 record_unwind_protect (directory_files_internal_unwind
,
496 make_save_value (d
, 0));
498 /* Loop reading blocks */
499 /* (att3b compiler bug requires do a null comparison this way) */
523 if (! DIRENTRY_NONEMPTY (dp
)
524 || len
< SCHARS (encoded_file
)
525 || 0 <= scmp (dp
->d_name
, SDATA (encoded_file
),
526 SCHARS (encoded_file
)))
529 if (file_name_completion_stat (encoded_dir
, dp
, &st
) < 0)
532 directoryp
= ((st
.st_mode
& S_IFMT
) == S_IFDIR
);
534 /* If all_flag is set, always include all.
535 It would not actually be helpful to the user to ignore any possible
536 completions when making a list of them. */
542 #ifndef TRIVIAL_DIRECTORY_ENTRY
543 #define TRIVIAL_DIRECTORY_ENTRY(n) (!strcmp (n, ".") || !strcmp (n, ".."))
545 /* "." and ".." are never interesting as completions, and are
546 actually in the way in a directory with only one file. */
547 if (TRIVIAL_DIRECTORY_ENTRY (dp
->d_name
))
549 else if (len
> SCHARS (encoded_file
))
550 /* Ignore directories if they match an element of
551 completion-ignored-extensions which ends in a slash. */
552 for (tem
= Vcompletion_ignored_extensions
;
553 CONSP (tem
); tem
= XCDR (tem
))
561 /* Need to encode ELT, since scmp compares unibyte
563 elt
= ENCODE_FILE (elt
);
564 elt_len
= SCHARS (elt
) - 1; /* -1 for trailing / */
568 if (p1
[elt_len
] != '/')
570 skip
= len
- elt_len
;
574 if (0 <= scmp (dp
->d_name
+ skip
, p1
, elt_len
))
581 /* Compare extensions-to-be-ignored against end of this file name */
582 /* if name is not an exact match against specified string */
583 if (len
> SCHARS (encoded_file
))
584 /* and exit this for loop if a match is found */
585 for (tem
= Vcompletion_ignored_extensions
;
586 CONSP (tem
); tem
= XCDR (tem
))
589 if (!STRINGP (elt
)) continue;
590 /* Need to encode ELT, since scmp compares unibyte
592 elt
= ENCODE_FILE (elt
);
593 skip
= len
- SCHARS (elt
);
594 if (skip
< 0) continue;
596 if (0 <= scmp (dp
->d_name
+ skip
,
604 /* If an ignored-extensions match was found,
605 don't process this name as a completion. */
609 if (!includeall
&& canexclude
)
610 /* We're not including all files and this file can be excluded. */
613 if (includeall
&& !canexclude
)
614 { /* If we have one non-excludable file, we want to exclude the
617 /* Throw away any previous excludable match found. */
623 /* FIXME: If we move this `decode' earlier we can eliminate
624 the repeated ENCODE_FILE on Vcompletion_ignored_extensions. */
625 name
= make_unibyte_string (dp
->d_name
, len
);
626 name
= DECODE_FILE (name
);
631 XSETFASTINT (zero
, 0);
633 /* Ignore this element if it fails to match all the regexps. */
634 for (regexps
= Vcompletion_regexp_list
; CONSP (regexps
);
635 regexps
= XCDR (regexps
))
636 if (fast_string_match (XCAR (regexps
), name
) < 0)
642 /* This is a possible completion */
644 /* This completion is a directory; make it end with '/'. */
645 name
= Ffile_name_as_directory (name
);
647 /* Test the predicate, if any. */
648 if (!NILP (predicate
))
654 val
= call1 (predicate
, name
);
661 /* Suitably record this match. */
666 bestmatch
= Fcons (name
, bestmatch
);
667 else if (NILP (bestmatch
))
670 bestmatchsize
= SCHARS (name
);
674 Lisp_Object zero
= make_number (0);
675 /* FIXME: This is a copy of the code in Ftry_completion. */
676 int compare
= min (bestmatchsize
, SCHARS (name
));
678 = Fcompare_strings (bestmatch
, zero
,
679 make_number (compare
),
681 make_number (compare
),
682 completion_ignore_case
? Qt
: Qnil
);
684 = (EQ (tem
, Qt
) ? compare
685 : XINT (tem
) < 0 ? - XINT (tem
) - 1
688 if (completion_ignore_case
)
690 /* If this is an exact match except for case,
691 use it as the best match rather than one that is not
692 an exact match. This way, we get the case pattern
693 of the actual match. */
694 /* This tests that the current file is an exact match
695 but BESTMATCH is not (it is too long). */
696 if ((matchsize
== SCHARS (name
)
697 && matchsize
+ !!directoryp
698 < SCHARS (bestmatch
))
700 /* If there is no exact match ignoring case,
701 prefer a match that does not change the case
703 /* If there is more than one exact match aside from
704 case, and one of them is exact including case,
706 /* This == checks that, of current file and BESTMATCH,
707 either both or neither are exact. */
708 (((matchsize
== SCHARS (name
))
710 (matchsize
+ !!directoryp
== SCHARS (bestmatch
)))
711 && (tem
= Fcompare_strings (name
, zero
,
712 make_number (SCHARS (file
)),
717 && (tem
= Fcompare_strings (bestmatch
, zero
,
718 make_number (SCHARS (file
)),
725 bestmatchsize
= matchsize
;
730 /* This closes the directory. */
731 bestmatch
= unbind_to (count
, bestmatch
);
733 if (all_flag
|| NILP (bestmatch
))
735 /* Return t if the supplied string is an exact match (counting case);
736 it does not require any change to be made. */
737 if (matchcount
== 1 && !NILP (Fequal (bestmatch
, file
)))
739 bestmatch
= Fsubstring (bestmatch
, make_number (0),
740 make_number (bestmatchsize
));
744 /* Compare exactly LEN chars of strings at S1 and S2,
745 ignoring case if appropriate.
746 Return -1 if strings match,
747 else number of chars that match at the beginning. */
751 register unsigned char *s1
, *s2
;
754 register int l
= len
;
756 if (completion_ignore_case
)
758 while (l
&& DOWNCASE (*s1
++) == DOWNCASE (*s2
++))
763 while (l
&& *s1
++ == *s2
++)
773 file_name_completion_stat (dirname
, dp
, st_addr
)
776 struct stat
*st_addr
;
778 int len
= NAMLEN (dp
);
779 int pos
= SCHARS (dirname
);
781 char *fullname
= (char *) alloca (len
+ pos
+ 2);
785 /* Some fields of struct stat are *very* expensive to compute on MS-DOS,
786 but aren't required here. Avoid computing the following fields:
787 st_inode, st_size and st_nlink for directories, and the execute bits
788 in st_mode for non-directory files with non-standard extensions. */
790 unsigned short save_djstat_flags
= _djstat_flags
;
792 _djstat_flags
= _STAT_INODE
| _STAT_EXEC_MAGIC
| _STAT_DIRSIZE
;
793 #endif /* __DJGPP__ > 1 */
796 bcopy (SDATA (dirname
), fullname
, pos
);
797 if (!IS_DIRECTORY_SEP (fullname
[pos
- 1]))
798 fullname
[pos
++] = DIRECTORY_SEP
;
800 bcopy (dp
->d_name
, fullname
+ pos
, len
);
801 fullname
[pos
+ len
] = 0;
804 /* We want to return success if a link points to a nonexistent file,
805 but we want to return the status for what the link points to,
806 in case it is a directory. */
807 value
= lstat (fullname
, st_addr
);
808 stat (fullname
, st_addr
);
811 value
= stat (fullname
, st_addr
);
814 _djstat_flags
= save_djstat_flags
;
815 #endif /* __DJGPP__ > 1 */
825 return Fcons (make_number (time
>> 16),
826 Fcons (make_number (time
& 0177777), Qnil
));
830 stat_uname (struct stat
*st
)
835 struct passwd
*pw
= (struct passwd
*) getpwuid (st
->st_uid
);
845 stat_gname (struct stat
*st
)
850 struct group
*gr
= (struct group
*) getgrgid (st
->st_gid
);
859 DEFUN ("file-attributes", Ffile_attributes
, Sfile_attributes
, 1, 2, 0,
860 doc
: /* Return a list of attributes of file FILENAME.
861 Value is nil if specified file cannot be opened.
863 ID-FORMAT specifies the preferred format of attributes uid and gid (see
864 below) - valid values are 'string and 'integer. The latter is the default,
865 but we plan to change that, so you should specify a non-nil value for
866 ID-FORMAT if you use the returned uid or gid.
868 Elements of the attribute list are:
869 0. t for directory, string (name linked to) for symbolic link, or nil.
870 1. Number of links to file.
871 2. File uid as a string or an integer. If a string value cannot be
872 looked up, the integer value is returned.
873 3. File gid, likewise.
874 4. Last access time, as a list of two integers.
875 First integer has high-order 16 bits of time, second has low 16 bits.
876 5. Last modification time, likewise.
877 6. Last status change time, likewise.
879 This is a floating point number if the size is too large for an integer.
880 8. File modes, as a string of ten letters or dashes as in ls -l.
881 9. t if file's gid would change if file were deleted and recreated.
882 10. inode number. If inode number is larger than the Emacs integer,
883 but still fits into a 32-bit number, this is a cons cell containing two
884 integers: first the high part, then the low 16 bits. If the inode number
885 is wider than 32 bits, this is a cons cell containing three integers:
886 first the high 24 bits, then middle 24 bits, and finally the low 16 bits.
887 11. Device number. If it is larger than the Emacs integer, this is
888 a cons cell, similar to the inode number.
890 On MS-Windows, performance depends on `w32-get-true-file-attributes',
892 (filename
, id_format
)
893 Lisp_Object filename
, id_format
;
895 Lisp_Object values
[12];
898 #if defined (BSD4_2) || defined (BSD4_3)
905 EMACS_INT ino
, uid
, gid
;
908 filename
= Fexpand_file_name (filename
, Qnil
);
910 /* If the file name has special constructs in it,
911 call the corresponding file handler. */
912 handler
= Ffind_file_name_handler (filename
, Qfile_attributes
);
914 { /* Only pass the extra arg if it is used to help backward compatibility
915 with old file handlers which do not implement the new arg. --Stef */
916 if (NILP (id_format
))
917 return call2 (handler
, Qfile_attributes
, filename
);
919 return call3 (handler
, Qfile_attributes
, filename
, id_format
);
923 encoded
= ENCODE_FILE (filename
);
926 if (lstat (SDATA (encoded
), &s
) < 0)
929 switch (s
.st_mode
& S_IFMT
)
932 values
[0] = Qnil
; break;
934 values
[0] = Qt
; break;
937 values
[0] = Ffile_symlink_p (filename
); break;
940 values
[1] = make_number (s
.st_nlink
);
943 if (NILP (id_format
) || EQ (id_format
, Qinteger
))
945 values
[2] = make_fixnum_or_float (uid
);
946 values
[3] = make_fixnum_or_float (gid
);
951 uname
= stat_uname (&s
);
952 values
[2] = (uname
? build_string (uname
)
953 : make_fixnum_or_float (uid
));
954 gname
= stat_gname (&s
);
955 values
[3] = (gname
? build_string (gname
)
956 : make_fixnum_or_float (gid
));
959 values
[4] = make_time (s
.st_atime
);
960 values
[5] = make_time (s
.st_mtime
);
961 values
[6] = make_time (s
.st_ctime
);
962 values
[7] = make_number (s
.st_size
);
963 /* If the size is out of range for an integer, return a float. */
964 if (XINT (values
[7]) != s
.st_size
)
965 values
[7] = make_float ((double)s
.st_size
);
966 /* If the size is negative, and its type is long, convert it back to
968 if (s
.st_size
< 0 && sizeof (s
.st_size
) == sizeof (long))
969 values
[7] = make_float ((double) ((unsigned long) s
.st_size
));
971 filemodestring (&s
, modes
);
972 values
[8] = make_string (modes
, 10);
973 #if defined (BSD4_2) || defined (BSD4_3) /* file gid will be dir gid */
974 dirname
= Ffile_name_directory (filename
);
975 if (! NILP (dirname
))
976 encoded
= ENCODE_FILE (dirname
);
977 if (! NILP (dirname
) && stat (SDATA (encoded
), &sdir
) == 0)
978 values
[9] = (sdir
.st_gid
!= s
.st_gid
) ? Qt
: Qnil
;
979 else /* if we can't tell, assume worst */
981 #else /* file gid will be egid */
982 values
[9] = (s
.st_gid
!= getegid ()) ? Qt
: Qnil
;
983 #endif /* BSD4_2 (or BSD4_3) */
984 /* Shut up GCC warnings in FIXNUM_OVERFLOW_P below. */
985 if (sizeof (s
.st_ino
) > sizeof (ino
))
986 ino
= (EMACS_INT
)(s
.st_ino
& 0xffffffff);
989 if (!FIXNUM_OVERFLOW_P (ino
)
990 && (sizeof (s
.st_ino
) <= sizeof (ino
) || (s
.st_ino
& ~INTMASK
) == 0))
991 /* Keep the most common cases as integers. */
992 values
[10] = make_number (ino
);
993 else if (sizeof (s
.st_ino
) <= sizeof (ino
)
994 || ((s
.st_ino
>> 16) & ~INTMASK
) == 0)
995 /* To allow inode numbers larger than VALBITS, separate the bottom
997 values
[10] = Fcons (make_number ((EMACS_INT
)(s
.st_ino
>> 16)),
998 make_number ((EMACS_INT
)(s
.st_ino
& 0xffff)));
1001 /* To allow inode numbers beyond 32 bits, separate into 2 24-bit
1002 high parts and a 16-bit bottom part.
1003 The code on the next line avoids a compiler warning on
1004 systems where st_ino is 32 bit wide. (bug#766). */
1005 EMACS_INT high_ino
= s
.st_ino
>> 31 >> 1;
1006 EMACS_INT low_ino
= s
.st_ino
& 0xffffffff;
1008 values
[10] = Fcons (make_number (high_ino
>> 8),
1009 Fcons (make_number (((high_ino
& 0xff) << 16)
1011 make_number (low_ino
& 0xffff)));
1014 /* Likewise for device, but don't let it become negative. We used
1015 to use FIXNUM_OVERFLOW_P here, but that won't catch large
1016 positive numbers such as 0xFFEEDDCC. */
1017 if ((EMACS_INT
)s
.st_dev
< 0
1018 || (EMACS_INT
)s
.st_dev
> MOST_POSITIVE_FIXNUM
)
1019 values
[11] = Fcons (make_number (s
.st_dev
>> 16),
1020 make_number (s
.st_dev
& 0xffff));
1022 values
[11] = make_number (s
.st_dev
);
1024 return Flist (sizeof(values
) / sizeof(values
[0]), values
);
1027 DEFUN ("file-attributes-lessp", Ffile_attributes_lessp
, Sfile_attributes_lessp
, 2, 2, 0,
1028 doc
: /* Return t if first arg file attributes list is less than second.
1029 Comparison is in lexicographic order and case is significant. */)
1033 return Fstring_lessp (Fcar (f1
), Fcar (f2
));
1039 Qdirectory_files
= intern ("directory-files");
1040 Qdirectory_files_and_attributes
= intern ("directory-files-and-attributes");
1041 Qfile_name_completion
= intern ("file-name-completion");
1042 Qfile_name_all_completions
= intern ("file-name-all-completions");
1043 Qfile_attributes
= intern ("file-attributes");
1044 Qfile_attributes_lessp
= intern ("file-attributes-lessp");
1045 Qdefault_directory
= intern ("default-directory");
1047 staticpro (&Qdirectory_files
);
1048 staticpro (&Qdirectory_files_and_attributes
);
1049 staticpro (&Qfile_name_completion
);
1050 staticpro (&Qfile_name_all_completions
);
1051 staticpro (&Qfile_attributes
);
1052 staticpro (&Qfile_attributes_lessp
);
1053 staticpro (&Qdefault_directory
);
1055 defsubr (&Sdirectory_files
);
1056 defsubr (&Sdirectory_files_and_attributes
);
1057 defsubr (&Sfile_name_completion
);
1058 defsubr (&Sfile_name_all_completions
);
1059 defsubr (&Sfile_attributes
);
1060 defsubr (&Sfile_attributes_lessp
);
1062 DEFVAR_LISP ("completion-ignored-extensions", &Vcompletion_ignored_extensions
,
1063 doc
: /* Completion ignores file names ending in any string in this list.
1064 It does not ignore them if all possible completions end in one of
1065 these strings or when displaying a list of completions.
1066 It ignores directory names if they match any string in this list which
1067 ends in a slash. */);
1068 Vcompletion_ignored_extensions
= Qnil
;
1071 /* arch-tag: 1ac8deca-4d8f-4d41-ade9-089154d98c03
1072 (do not change this comment) */