Commit | Line | Data |
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14d55bce | 1 | /* Lisp functions for making directory listings. |
0b5538bd | 2 | Copyright (C) 1985, 1986, 1993, 1994, 1999, 2000, 2001, 2002, 2003, |
8cabe764 | 3 | 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc. |
14d55bce RS |
4 | |
5 | This file is part of GNU Emacs. | |
6 | ||
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 | |
684d6f5b | 9 | the Free Software Foundation; either version 3, or (at your option) |
14d55bce RS |
10 | any later version. |
11 | ||
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. | |
16 | ||
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 | |
4fc5845f LK |
19 | the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
20 | Boston, MA 02110-1301, USA. */ | |
14d55bce RS |
21 | |
22 | ||
3964b9a7 RS |
23 | #include <config.h> |
24 | ||
14d55bce RS |
25 | #include <stdio.h> |
26 | #include <sys/types.h> | |
27 | #include <sys/stat.h> | |
28 | ||
5b9c0a1d | 29 | #ifdef HAVE_PWD_H |
6b61353c | 30 | #include <pwd.h> |
5b9c0a1d TTN |
31 | #endif |
32 | #ifndef VMS | |
6b61353c KH |
33 | #include <grp.h> |
34 | #endif | |
35 | ||
7cc9f69f | 36 | #include <errno.h> |
68c45bf0 | 37 | |
3ed991aa RS |
38 | #ifdef VMS |
39 | #include <string.h> | |
40 | #include <rms.h> | |
41 | #include <rmsdef.h> | |
42 | #endif | |
43 | ||
dfcf069d AS |
44 | #ifdef HAVE_UNISTD_H |
45 | #include <unistd.h> | |
46 | #endif | |
47 | ||
d6717cdb JB |
48 | /* The d_nameln member of a struct dirent includes the '\0' character |
49 | on some systems, but not on others. What's worse, you can't tell | |
50 | at compile-time which one it will be, since it really depends on | |
51 | the sort of system providing the filesystem you're reading from, | |
52 | not the system you are running on. Paul Eggert | |
53 | <eggert@bi.twinsun.com> says this occurs when Emacs is running on a | |
54 | SunOS 4.1.2 host, reading a directory that is remote-mounted from a | |
55 | Solaris 2.1 host and is in a native Solaris 2.1 filesystem. | |
56 | ||
57 | Since applying strlen to the name always works, we'll just do that. */ | |
58 | #define NAMLEN(p) strlen (p->d_name) | |
59 | ||
14d55bce RS |
60 | #ifdef SYSV_SYSTEM_DIR |
61 | ||
62 | #include <dirent.h> | |
63 | #define DIRENTRY struct dirent | |
14d55bce | 64 | |
128ecc89 | 65 | #else /* not SYSV_SYSTEM_DIR */ |
14d55bce RS |
66 | |
67 | #ifdef NONSYSTEM_DIR_LIBRARY | |
68 | #include "ndir.h" | |
69 | #else /* not NONSYSTEM_DIR_LIBRARY */ | |
128ecc89 RS |
70 | #ifdef MSDOS |
71 | #include <dirent.h> | |
72 | #else | |
14d55bce | 73 | #include <sys/dir.h> |
128ecc89 | 74 | #endif |
14d55bce RS |
75 | #endif /* not NONSYSTEM_DIR_LIBRARY */ |
76 | ||
851cab13 DL |
77 | #include <sys/stat.h> |
78 | ||
128ecc89 | 79 | #ifndef MSDOS |
14d55bce | 80 | #define DIRENTRY struct direct |
14d55bce RS |
81 | |
82 | extern DIR *opendir (); | |
83 | extern struct direct *readdir (); | |
84 | ||
128ecc89 RS |
85 | #endif /* not MSDOS */ |
86 | #endif /* not SYSV_SYSTEM_DIR */ | |
87 | ||
8f7f8c65 EZ |
88 | /* Some versions of Cygwin don't have d_ino in `struct dirent'. */ |
89 | #if defined(MSDOS) || defined(__CYGWIN__) | |
128ecc89 RS |
90 | #define DIRENTRY_NONEMPTY(p) ((p)->d_name[0] != 0) |
91 | #else | |
92 | #define DIRENTRY_NONEMPTY(p) ((p)->d_ino) | |
14d55bce RS |
93 | #endif |
94 | ||
14d55bce | 95 | #include "lisp.h" |
fa8459a3 | 96 | #include "systime.h" |
14d55bce RS |
97 | #include "buffer.h" |
98 | #include "commands.h" | |
d2f6dae8 | 99 | #include "character.h" |
bd33479f KH |
100 | #include "charset.h" |
101 | #include "coding.h" | |
14d55bce | 102 | #include "regex.h" |
8c8a7c58 | 103 | #include "blockinput.h" |
14d55bce | 104 | |
e50c66d3 KH |
105 | /* Returns a search buffer, with a fastmap allocated and ready to go. */ |
106 | extern struct re_pattern_buffer *compile_pattern (); | |
c7e466e1 | 107 | |
851cab13 DL |
108 | /* From filemode.c. Can't go in Lisp.h because of `stat'. */ |
109 | extern void filemodestring P_ ((struct stat *, char *)); | |
110 | ||
14d55bce RS |
111 | /* if system does not have symbolic links, it does not have lstat. |
112 | In that case, use ordinary stat instead. */ | |
113 | ||
114 | #ifndef S_IFLNK | |
115 | #define lstat stat | |
116 | #endif | |
117 | ||
97e98a56 | 118 | extern int completion_ignore_case; |
ecd3f8b2 | 119 | extern Lisp_Object Qcompletion_ignore_case; |
f676868d | 120 | extern Lisp_Object Vcompletion_regexp_list; |
ccbcf979 | 121 | |
14d55bce | 122 | Lisp_Object Vcompletion_ignored_extensions; |
32f4334d | 123 | Lisp_Object Qdirectory_files; |
4424b255 | 124 | Lisp_Object Qdirectory_files_and_attributes; |
32f4334d RS |
125 | Lisp_Object Qfile_name_completion; |
126 | Lisp_Object Qfile_name_all_completions; | |
434e6714 | 127 | Lisp_Object Qfile_attributes; |
4424b255 | 128 | Lisp_Object Qfile_attributes_lessp; |
b3f04ced RS |
129 | |
130 | static int scmp P_ ((unsigned char *, unsigned char *, int)); | |
14d55bce | 131 | \f |
2488aba5 AI |
132 | |
133 | Lisp_Object | |
134 | directory_files_internal_unwind (dh) | |
135 | Lisp_Object dh; | |
136 | { | |
9d291bdf | 137 | DIR *d = (DIR *) XSAVE_VALUE (dh)->pointer; |
d15b573e | 138 | BLOCK_INPUT; |
2488aba5 | 139 | closedir (d); |
d15b573e | 140 | UNBLOCK_INPUT; |
2488aba5 AI |
141 | return Qnil; |
142 | } | |
143 | ||
177c0ea7 | 144 | /* Function shared by Fdirectory_files and Fdirectory_files_and_attributes. |
4424b255 | 145 | When ATTRS is zero, return a list of directory filenames; when |
6b61353c KH |
146 | non-zero, return a list of directory filenames and their attributes. |
147 | In the latter case, ID_FORMAT is passed to Ffile_attributes. */ | |
f69f9da1 | 148 | |
4424b255 | 149 | Lisp_Object |
6b61353c | 150 | directory_files_internal (directory, full, match, nosort, attrs, id_format) |
23bd240f | 151 | Lisp_Object directory, full, match, nosort; |
4424b255 | 152 | int attrs; |
6b61353c | 153 | Lisp_Object id_format; |
14d55bce RS |
154 | { |
155 | DIR *d; | |
388ac098 GM |
156 | int directory_nbytes; |
157 | Lisp_Object list, dirfilename, encoded_directory; | |
6bbd7a29 | 158 | struct re_pattern_buffer *bufp = NULL; |
96d64004 | 159 | int needsep = 0; |
aed13378 | 160 | int count = SPECPDL_INDEX (); |
388ac098 | 161 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5; |
8e42f043 | 162 | DIRENTRY *dp; |
32f4334d | 163 | |
96d64004 | 164 | /* Because of file name handlers, these functions might call |
6155fae1 | 165 | Ffuncall, and cause a GC. */ |
388ac098 GM |
166 | list = encoded_directory = dirfilename = Qnil; |
167 | GCPRO5 (match, directory, list, dirfilename, encoded_directory); | |
96d64004 | 168 | dirfilename = Fdirectory_file_name (directory); |
6155fae1 | 169 | |
265a9e55 | 170 | if (!NILP (match)) |
14d55bce | 171 | { |
b7826503 | 172 | CHECK_STRING (match); |
ebb9e16f JB |
173 | |
174 | /* MATCH might be a flawed regular expression. Rather than | |
8e6208c5 | 175 | catching and signaling our own errors, we just call |
ebb9e16f | 176 | compile_pattern to do the work for us. */ |
c872c6b2 RS |
177 | /* Pass 1 for the MULTIBYTE arg |
178 | because we do make multibyte strings if the contents warrant. */ | |
14d55bce | 179 | #ifdef VMS |
e50c66d3 | 180 | bufp = compile_pattern (match, 0, |
3e937712 | 181 | buffer_defaults.downcase_table, 0, 1); |
1a9fbabe EZ |
182 | #else /* !VMS */ |
183 | # ifdef WINDOWSNT | |
184 | /* Windows users want case-insensitive wildcards. */ | |
185 | bufp = compile_pattern (match, 0, | |
186 | buffer_defaults.case_canon_table, 0, 1); | |
187 | # else /* !WINDOWSNT */ | |
3e937712 | 188 | bufp = compile_pattern (match, 0, Qnil, 0, 1); |
1a9fbabe EZ |
189 | # endif /* !WINDOWSNT */ |
190 | #endif /* !VMS */ | |
14d55bce RS |
191 | } |
192 | ||
b3edfc9b | 193 | /* Note: ENCODE_FILE and DECODE_FILE can GC because they can run |
388ac098 GM |
194 | run_pre_post_conversion_on_str which calls Lisp directly and |
195 | indirectly. */ | |
24c2a54f | 196 | dirfilename = ENCODE_FILE (dirfilename); |
24c2a54f RS |
197 | encoded_directory = ENCODE_FILE (directory); |
198 | ||
e50c66d3 | 199 | /* Now *bufp is the compiled form of MATCH; don't call anything |
6155fae1 JB |
200 | which might compile a new regexp until we're done with the loop! */ |
201 | ||
d15b573e | 202 | BLOCK_INPUT; |
d5db4077 | 203 | d = opendir (SDATA (dirfilename)); |
d15b573e | 204 | UNBLOCK_INPUT; |
388ac098 | 205 | if (d == NULL) |
23bd240f | 206 | report_file_error ("Opening directory", Fcons (directory, Qnil)); |
14d55bce | 207 | |
2488aba5 AI |
208 | /* Unfortunately, we can now invoke expand-file-name and |
209 | file-attributes on filenames, both of which can throw, so we must | |
210 | do a proper unwind-protect. */ | |
211 | record_unwind_protect (directory_files_internal_unwind, | |
9d291bdf | 212 | make_save_value (d, 0)); |
2488aba5 | 213 | |
d5db4077 | 214 | directory_nbytes = SBYTES (directory); |
c81a9bdc | 215 | re_match_object = Qt; |
14d55bce | 216 | |
96d64004 AS |
217 | /* Decide whether we need to add a directory separator. */ |
218 | #ifndef VMS | |
388ac098 | 219 | if (directory_nbytes == 0 |
d5db4077 | 220 | || !IS_ANY_SEP (SREF (directory, directory_nbytes - 1))) |
96d64004 | 221 | needsep = 1; |
e540cbed | 222 | #endif /* not VMS */ |
96d64004 | 223 | |
8e42f043 | 224 | /* Loop reading blocks until EOF or error. */ |
f69f9da1 | 225 | for (;;) |
14d55bce | 226 | { |
f69f9da1 GM |
227 | errno = 0; |
228 | dp = readdir (d); | |
229 | ||
9d291bdf | 230 | if (dp == NULL && (0 |
f69f9da1 | 231 | #ifdef EAGAIN |
9d291bdf SM |
232 | || errno == EAGAIN |
233 | #endif | |
234 | #ifdef EINTR | |
235 | || errno == EINTR | |
f69f9da1 | 236 | #endif |
9d291bdf SM |
237 | )) |
238 | { QUIT; continue; } | |
177c0ea7 | 239 | |
f69f9da1 GM |
240 | if (dp == NULL) |
241 | break; | |
242 | ||
128ecc89 | 243 | if (DIRENTRY_NONEMPTY (dp)) |
14d55bce | 244 | { |
e23f810c | 245 | int len; |
2488aba5 | 246 | int wanted = 0; |
388ac098 GM |
247 | Lisp_Object name, finalname; |
248 | struct gcpro gcpro1, gcpro2; | |
e23f810c KH |
249 | |
250 | len = NAMLEN (dp); | |
9ad4f3e5 | 251 | name = finalname = make_unibyte_string (dp->d_name, len); |
388ac098 | 252 | GCPRO2 (finalname, name); |
177c0ea7 | 253 | |
388ac098 GM |
254 | /* Note: ENCODE_FILE can GC; it should protect its argument, |
255 | though. */ | |
256 | name = DECODE_FILE (name); | |
d5db4077 | 257 | len = SBYTES (name); |
e23f810c | 258 | |
2488aba5 AI |
259 | /* Now that we have unwind_protect in place, we might as well |
260 | allow matching to be interrupted. */ | |
261 | immediate_quit = 1; | |
262 | QUIT; | |
263 | ||
265a9e55 | 264 | if (NILP (match) |
d5db4077 | 265 | || (0 <= re_search (bufp, SDATA (name), len, 0, len, 0))) |
388ac098 | 266 | wanted = 1; |
2488aba5 AI |
267 | |
268 | immediate_quit = 0; | |
269 | ||
270 | if (wanted) | |
14d55bce | 271 | { |
265a9e55 | 272 | if (!NILP (full)) |
14d55bce | 273 | { |
e23f810c | 274 | Lisp_Object fullname; |
388ac098 GM |
275 | int nbytes = len + directory_nbytes + needsep; |
276 | int nchars; | |
5617588f | 277 | |
388ac098 | 278 | fullname = make_uninit_multibyte_string (nbytes, nbytes); |
d5db4077 | 279 | bcopy (SDATA (directory), SDATA (fullname), |
388ac098 | 280 | directory_nbytes); |
177c0ea7 | 281 | |
5617588f | 282 | if (needsep) |
d549c5db | 283 | SSET (fullname, directory_nbytes, DIRECTORY_SEP); |
177c0ea7 | 284 | |
d5db4077 KR |
285 | bcopy (SDATA (name), |
286 | SDATA (fullname) + directory_nbytes + needsep, | |
388ac098 | 287 | len); |
177c0ea7 | 288 | |
d5db4077 | 289 | nchars = chars_in_text (SDATA (fullname), nbytes); |
388ac098 GM |
290 | |
291 | /* Some bug somewhere. */ | |
292 | if (nchars > nbytes) | |
293 | abort (); | |
177c0ea7 | 294 | |
437fcd47 | 295 | STRING_SET_CHARS (fullname, nchars); |
388ac098 | 296 | if (nchars == nbytes) |
d5db4077 | 297 | STRING_SET_UNIBYTE (fullname); |
177c0ea7 | 298 | |
4424b255 GV |
299 | finalname = fullname; |
300 | } | |
aab9c564 KH |
301 | else |
302 | finalname = name; | |
4424b255 GV |
303 | |
304 | if (attrs) | |
305 | { | |
306 | /* Construct an expanded filename for the directory entry. | |
307 | Use the decoded names for input to Ffile_attributes. */ | |
388ac098 GM |
308 | Lisp_Object decoded_fullname, fileattrs; |
309 | struct gcpro gcpro1, gcpro2; | |
310 | ||
311 | decoded_fullname = fileattrs = Qnil; | |
312 | GCPRO2 (decoded_fullname, fileattrs); | |
4424b255 | 313 | |
388ac098 | 314 | /* Both Fexpand_file_name and Ffile_attributes can GC. */ |
4424b255 | 315 | decoded_fullname = Fexpand_file_name (name, directory); |
6b61353c | 316 | fileattrs = Ffile_attributes (decoded_fullname, id_format); |
4424b255 GV |
317 | |
318 | list = Fcons (Fcons (finalname, fileattrs), list); | |
388ac098 | 319 | UNGCPRO; |
4424b255 GV |
320 | } |
321 | else | |
388ac098 | 322 | list = Fcons (finalname, list); |
14d55bce | 323 | } |
388ac098 GM |
324 | |
325 | UNGCPRO; | |
14d55bce RS |
326 | } |
327 | } | |
2488aba5 | 328 | |
d15b573e | 329 | BLOCK_INPUT; |
14d55bce | 330 | closedir (d); |
d15b573e | 331 | UNBLOCK_INPUT; |
2488aba5 AI |
332 | |
333 | /* Discard the unwind protect. */ | |
334 | specpdl_ptr = specpdl + count; | |
335 | ||
388ac098 GM |
336 | if (NILP (nosort)) |
337 | list = Fsort (Fnreverse (list), | |
338 | attrs ? Qfile_attributes_lessp : Qstring_lessp); | |
177c0ea7 | 339 | |
388ac098 | 340 | RETURN_UNGCPRO (list); |
14d55bce | 341 | } |
4424b255 GV |
342 | |
343 | ||
344 | DEFUN ("directory-files", Fdirectory_files, Sdirectory_files, 1, 4, 0, | |
335c5470 PJ |
345 | doc: /* Return a list of names of files in DIRECTORY. |
346 | There are three optional arguments: | |
347 | If FULL is non-nil, return absolute file names. Otherwise return names | |
348 | that are relative to the specified directory. | |
349 | If MATCH is non-nil, mention only file names that match the regexp MATCH. | |
350 | If NOSORT is non-nil, the list is not sorted--its order is unpredictable. | |
351 | NOSORT is useful if you plan to sort the result yourself. */) | |
352 | (directory, full, match, nosort) | |
4424b255 GV |
353 | Lisp_Object directory, full, match, nosort; |
354 | { | |
355 | Lisp_Object handler; | |
4ece81a6 | 356 | directory = Fexpand_file_name (directory, Qnil); |
4424b255 GV |
357 | |
358 | /* If the file name has special constructs in it, | |
359 | call the corresponding file handler. */ | |
360 | handler = Ffind_file_name_handler (directory, Qdirectory_files); | |
361 | if (!NILP (handler)) | |
6b61353c KH |
362 | return call5 (handler, Qdirectory_files, directory, |
363 | full, match, nosort); | |
4424b255 | 364 | |
6b61353c | 365 | return directory_files_internal (directory, full, match, nosort, 0, Qnil); |
4424b255 GV |
366 | } |
367 | ||
335c5470 | 368 | DEFUN ("directory-files-and-attributes", Fdirectory_files_and_attributes, |
6b61353c | 369 | Sdirectory_files_and_attributes, 1, 5, 0, |
335c5470 | 370 | doc: /* Return a list of names of files and their attributes in DIRECTORY. |
6b61353c | 371 | There are four optional arguments: |
335c5470 PJ |
372 | If FULL is non-nil, return absolute file names. Otherwise return names |
373 | that are relative to the specified directory. | |
374 | If MATCH is non-nil, mention only file names that match the regexp MATCH. | |
375 | If NOSORT is non-nil, the list is not sorted--its order is unpredictable. | |
6b61353c KH |
376 | NOSORT is useful if you plan to sort the result yourself. |
377 | ID-FORMAT specifies the preferred format of attributes uid and gid, see | |
378 | `file-attributes' for further documentation. */) | |
379 | (directory, full, match, nosort, id_format) | |
380 | Lisp_Object directory, full, match, nosort, id_format; | |
4424b255 GV |
381 | { |
382 | Lisp_Object handler; | |
4ece81a6 | 383 | directory = Fexpand_file_name (directory, Qnil); |
4424b255 GV |
384 | |
385 | /* If the file name has special constructs in it, | |
386 | call the corresponding file handler. */ | |
387 | handler = Ffind_file_name_handler (directory, Qdirectory_files_and_attributes); | |
388 | if (!NILP (handler)) | |
6b61353c KH |
389 | return call6 (handler, Qdirectory_files_and_attributes, |
390 | directory, full, match, nosort, id_format); | |
4424b255 | 391 | |
6b61353c | 392 | return directory_files_internal (directory, full, match, nosort, 1, id_format); |
4424b255 GV |
393 | } |
394 | ||
14d55bce RS |
395 | \f |
396 | Lisp_Object file_name_completion (); | |
397 | ||
398 | DEFUN ("file-name-completion", Ffile_name_completion, Sfile_name_completion, | |
abfb1932 | 399 | 2, 3, 0, |
335c5470 PJ |
400 | doc: /* Complete file name FILE in directory DIRECTORY. |
401 | Returns the longest string | |
402 | common to all file names in DIRECTORY that start with FILE. | |
403 | If there is only one and FILE matches it exactly, returns t. | |
2f60660a | 404 | Returns nil if DIRECTORY contains no name starting with FILE. |
335c5470 | 405 | |
b6ce54d6 RS |
406 | If PREDICATE is non-nil, call PREDICATE with each possible |
407 | completion (in absolute form) and ignore it if PREDICATE returns nil. | |
408 | ||
335c5470 PJ |
409 | This function ignores some of the possible completions as |
410 | determined by the variable `completion-ignored-extensions', which see. */) | |
abfb1932 RS |
411 | (file, directory, predicate) |
412 | Lisp_Object file, directory, predicate; | |
14d55bce | 413 | { |
32f4334d | 414 | Lisp_Object handler; |
32f4334d | 415 | |
8436e231 | 416 | /* If the directory name has special constructs in it, |
32f4334d | 417 | call the corresponding file handler. */ |
23bd240f | 418 | handler = Ffind_file_name_handler (directory, Qfile_name_completion); |
32f4334d | 419 | if (!NILP (handler)) |
abfb1932 | 420 | return call4 (handler, Qfile_name_completion, file, directory, predicate); |
32f4334d | 421 | |
8436e231 RS |
422 | /* If the file name has special constructs in it, |
423 | call the corresponding file handler. */ | |
424 | handler = Ffind_file_name_handler (file, Qfile_name_completion); | |
425 | if (!NILP (handler)) | |
abfb1932 | 426 | return call4 (handler, Qfile_name_completion, file, directory, predicate); |
8436e231 | 427 | |
abfb1932 | 428 | return file_name_completion (file, directory, 0, 0, predicate); |
14d55bce RS |
429 | } |
430 | ||
431 | DEFUN ("file-name-all-completions", Ffile_name_all_completions, | |
335c5470 PJ |
432 | Sfile_name_all_completions, 2, 2, 0, |
433 | doc: /* Return a list of all completions of file name FILE in directory DIRECTORY. | |
434 | These are all file names in directory DIRECTORY which begin with FILE. */) | |
435 | (file, directory) | |
23bd240f | 436 | Lisp_Object file, directory; |
14d55bce | 437 | { |
32f4334d RS |
438 | Lisp_Object handler; |
439 | ||
8436e231 | 440 | /* If the directory name has special constructs in it, |
32f4334d | 441 | call the corresponding file handler. */ |
23bd240f | 442 | handler = Ffind_file_name_handler (directory, Qfile_name_all_completions); |
32f4334d | 443 | if (!NILP (handler)) |
23bd240f | 444 | return call3 (handler, Qfile_name_all_completions, file, directory); |
32f4334d | 445 | |
8436e231 RS |
446 | /* If the file name has special constructs in it, |
447 | call the corresponding file handler. */ | |
448 | handler = Ffind_file_name_handler (file, Qfile_name_all_completions); | |
449 | if (!NILP (handler)) | |
23bd240f | 450 | return call3 (handler, Qfile_name_all_completions, file, directory); |
8436e231 | 451 | |
abfb1932 | 452 | return file_name_completion (file, directory, 1, 0, Qnil); |
14d55bce RS |
453 | } |
454 | ||
dfcf069d AS |
455 | static int file_name_completion_stat (); |
456 | ||
14d55bce | 457 | Lisp_Object |
abfb1932 | 458 | file_name_completion (file, dirname, all_flag, ver_flag, predicate) |
14d55bce RS |
459 | Lisp_Object file, dirname; |
460 | int all_flag, ver_flag; | |
abfb1932 | 461 | Lisp_Object predicate; |
14d55bce RS |
462 | { |
463 | DIR *d; | |
6bbd7a29 | 464 | int bestmatchsize = 0, skip; |
14d55bce RS |
465 | register int compare, matchsize; |
466 | unsigned char *p1, *p2; | |
467 | int matchcount = 0; | |
abfb1932 RS |
468 | /* If ALL_FLAG is 1, BESTMATCH is the list of all matches, decoded. |
469 | If ALL_FLAG is 0, BESTMATCH is either nil | |
470 | or the best match so far, not decoded. */ | |
14d55bce | 471 | Lisp_Object bestmatch, tem, elt, name; |
24c2a54f RS |
472 | Lisp_Object encoded_file; |
473 | Lisp_Object encoded_dir; | |
14d55bce RS |
474 | struct stat st; |
475 | int directoryp; | |
476 | int passcount; | |
aed13378 | 477 | int count = SPECPDL_INDEX (); |
24c2a54f | 478 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5; |
3fcc88cc | 479 | |
6bbd7a29 GM |
480 | elt = Qnil; |
481 | ||
14d55bce RS |
482 | #ifdef VMS |
483 | extern DIRENTRY * readdirver (); | |
484 | ||
485 | DIRENTRY *((* readfunc) ()); | |
486 | ||
487 | /* Filename completion on VMS ignores case, since VMS filesys does. */ | |
488 | specbind (Qcompletion_ignore_case, Qt); | |
489 | ||
490 | readfunc = readdir; | |
491 | if (ver_flag) | |
492 | readfunc = readdirver; | |
493 | file = Fupcase (file); | |
494 | #else /* not VMS */ | |
b7826503 | 495 | CHECK_STRING (file); |
14d55bce RS |
496 | #endif /* not VMS */ |
497 | ||
128ecc89 RS |
498 | #ifdef FILE_SYSTEM_CASE |
499 | file = FILE_SYSTEM_CASE (file); | |
500 | #endif | |
14d55bce | 501 | bestmatch = Qnil; |
24c2a54f RS |
502 | encoded_file = encoded_dir = Qnil; |
503 | GCPRO5 (file, dirname, bestmatch, encoded_file, encoded_dir); | |
3fcc88cc | 504 | dirname = Fexpand_file_name (dirname, Qnil); |
14d55bce | 505 | |
24c2a54f RS |
506 | /* Do completion on the encoded file name |
507 | because the other names in the directory are (we presume) | |
508 | encoded likewise. We decode the completed string at the end. */ | |
509 | encoded_file = ENCODE_FILE (file); | |
510 | ||
511 | encoded_dir = ENCODE_FILE (dirname); | |
512 | ||
14d55bce RS |
513 | /* With passcount = 0, ignore files that end in an ignored extension. |
514 | If nothing found then try again with passcount = 1, don't ignore them. | |
515 | If looking for all completions, start with passcount = 1, | |
516 | so always take even the ignored ones. | |
517 | ||
518 | ** It would not actually be helpful to the user to ignore any possible | |
519 | completions when making a list of them.** */ | |
520 | ||
265a9e55 | 521 | for (passcount = !!all_flag; NILP (bestmatch) && passcount < 2; passcount++) |
14d55bce | 522 | { |
c3a3229c RS |
523 | int inner_count = SPECPDL_INDEX (); |
524 | ||
d15b573e | 525 | BLOCK_INPUT; |
d5db4077 | 526 | d = opendir (SDATA (Fdirectory_file_name (encoded_dir))); |
d15b573e | 527 | UNBLOCK_INPUT; |
24c2a54f | 528 | if (!d) |
14d55bce RS |
529 | report_file_error ("Opening directory", Fcons (dirname, Qnil)); |
530 | ||
62e3881f | 531 | record_unwind_protect (directory_files_internal_unwind, |
9d291bdf | 532 | make_save_value (d, 0)); |
62e3881f | 533 | |
14d55bce RS |
534 | /* Loop reading blocks */ |
535 | /* (att3b compiler bug requires do a null comparison this way) */ | |
536 | while (1) | |
537 | { | |
538 | DIRENTRY *dp; | |
539 | int len; | |
540 | ||
541 | #ifdef VMS | |
542 | dp = (*readfunc) (d); | |
543 | #else | |
9d291bdf | 544 | errno = 0; |
14d55bce | 545 | dp = readdir (d); |
9d291bdf SM |
546 | if (dp == NULL && (0 |
547 | # ifdef EAGAIN | |
548 | || errno == EAGAIN | |
549 | # endif | |
550 | # ifdef EINTR | |
551 | || errno == EINTR | |
552 | # endif | |
553 | )) | |
554 | { QUIT; continue; } | |
14d55bce | 555 | #endif |
9d291bdf | 556 | |
14d55bce RS |
557 | if (!dp) break; |
558 | ||
559 | len = NAMLEN (dp); | |
560 | ||
c3a3229c | 561 | QUIT; |
128ecc89 | 562 | if (! DIRENTRY_NONEMPTY (dp) |
d5db4077 KR |
563 | || len < SCHARS (encoded_file) |
564 | || 0 <= scmp (dp->d_name, SDATA (encoded_file), | |
565 | SCHARS (encoded_file))) | |
14d55bce RS |
566 | continue; |
567 | ||
24c2a54f | 568 | if (file_name_completion_stat (encoded_dir, dp, &st) < 0) |
14d55bce RS |
569 | continue; |
570 | ||
571 | directoryp = ((st.st_mode & S_IFMT) == S_IFDIR); | |
572 | tem = Qnil; | |
ad456ad4 RS |
573 | if (directoryp) |
574 | { | |
575 | #ifndef TRIVIAL_DIRECTORY_ENTRY | |
576 | #define TRIVIAL_DIRECTORY_ENTRY(n) (!strcmp (n, ".") || !strcmp (n, "..")) | |
577 | #endif | |
abfb1932 RS |
578 | /* "." and ".." are never interesting as completions, and are |
579 | actually in the way in a directory with only one file. */ | |
ad456ad4 RS |
580 | if (!passcount && TRIVIAL_DIRECTORY_ENTRY (dp->d_name)) |
581 | continue; | |
d5db4077 | 582 | if (!passcount && len > SCHARS (encoded_file)) |
d013f29b EZ |
583 | /* Ignore directories if they match an element of |
584 | completion-ignored-extensions which ends in a slash. */ | |
585 | for (tem = Vcompletion_ignored_extensions; | |
586 | CONSP (tem); tem = XCDR (tem)) | |
587 | { | |
588 | int elt_len; | |
589 | ||
590 | elt = XCAR (tem); | |
591 | if (!STRINGP (elt)) | |
592 | continue; | |
a74aaa9d EZ |
593 | /* Need to encode ELT, since scmp compares unibyte |
594 | strings only. */ | |
595 | elt = ENCODE_FILE (elt); | |
d5db4077 | 596 | elt_len = SCHARS (elt) - 1; /* -1 for trailing / */ |
7a8d465a | 597 | if (elt_len <= 0) |
d013f29b | 598 | continue; |
d5db4077 | 599 | p1 = SDATA (elt); |
d013f29b EZ |
600 | if (p1[elt_len] != '/') |
601 | continue; | |
602 | skip = len - elt_len; | |
603 | if (skip < 0) | |
604 | continue; | |
605 | ||
606 | if (0 <= scmp (dp->d_name + skip, p1, elt_len)) | |
607 | continue; | |
608 | break; | |
609 | } | |
ad456ad4 RS |
610 | } |
611 | else | |
14d55bce RS |
612 | { |
613 | /* Compare extensions-to-be-ignored against end of this file name */ | |
614 | /* if name is not an exact match against specified string */ | |
d5db4077 | 615 | if (!passcount && len > SCHARS (encoded_file)) |
14d55bce RS |
616 | /* and exit this for loop if a match is found */ |
617 | for (tem = Vcompletion_ignored_extensions; | |
70949dac | 618 | CONSP (tem); tem = XCDR (tem)) |
14d55bce | 619 | { |
70949dac | 620 | elt = XCAR (tem); |
88cf1852 | 621 | if (!STRINGP (elt)) continue; |
a74aaa9d EZ |
622 | /* Need to encode ELT, since scmp compares unibyte |
623 | strings only. */ | |
624 | elt = ENCODE_FILE (elt); | |
d5db4077 | 625 | skip = len - SCHARS (elt); |
14d55bce RS |
626 | if (skip < 0) continue; |
627 | ||
628 | if (0 <= scmp (dp->d_name + skip, | |
d5db4077 KR |
629 | SDATA (elt), |
630 | SCHARS (elt))) | |
14d55bce RS |
631 | continue; |
632 | break; | |
633 | } | |
634 | } | |
635 | ||
f676868d KH |
636 | /* If an ignored-extensions match was found, |
637 | don't process this name as a completion. */ | |
638 | if (!passcount && CONSP (tem)) | |
639 | continue; | |
640 | ||
641 | if (!passcount) | |
14d55bce | 642 | { |
f676868d KH |
643 | Lisp_Object regexps; |
644 | Lisp_Object zero; | |
617b3bfe | 645 | XSETFASTINT (zero, 0); |
f676868d KH |
646 | |
647 | /* Ignore this element if it fails to match all the regexps. */ | |
648 | for (regexps = Vcompletion_regexp_list; CONSP (regexps); | |
70949dac | 649 | regexps = XCDR (regexps)) |
f676868d | 650 | { |
1c56232f EZ |
651 | tem = Fstring_match (XCAR (regexps), |
652 | make_string (dp->d_name, len), zero); | |
f676868d KH |
653 | if (NILP (tem)) |
654 | break; | |
655 | } | |
656 | if (CONSP (regexps)) | |
657 | continue; | |
658 | } | |
14d55bce | 659 | |
abfb1932 RS |
660 | /* This is a possible completion */ |
661 | if (directoryp) | |
662 | { | |
663 | /* This completion is a directory; make it end with '/' */ | |
664 | name = Ffile_name_as_directory (make_string (dp->d_name, len)); | |
665 | } | |
666 | else | |
667 | name = make_string (dp->d_name, len); | |
668 | ||
669 | /* Test the predicate, if any. */ | |
670 | ||
671 | if (!NILP (predicate)) | |
672 | { | |
673 | Lisp_Object decoded; | |
c4c52bb7 KS |
674 | Lisp_Object val; |
675 | struct gcpro gcpro1; | |
676 | ||
677 | GCPRO1 (name); | |
abfb1932 | 678 | decoded = Fexpand_file_name (DECODE_FILE (name), dirname); |
c4c52bb7 KS |
679 | val = call1 (predicate, decoded); |
680 | UNGCPRO; | |
681 | ||
682 | if (NILP (val)) | |
abfb1932 RS |
683 | continue; |
684 | } | |
685 | ||
686 | /* Suitably record this match. */ | |
14d55bce | 687 | |
f676868d KH |
688 | matchcount++; |
689 | ||
abfb1932 | 690 | if (all_flag) |
f676868d | 691 | { |
abfb1932 RS |
692 | name = DECODE_FILE (name); |
693 | bestmatch = Fcons (name, bestmatch); | |
694 | } | |
695 | else if (NILP (bestmatch)) | |
696 | { | |
697 | bestmatch = name; | |
698 | bestmatchsize = SCHARS (name); | |
f676868d KH |
699 | } |
700 | else | |
701 | { | |
702 | compare = min (bestmatchsize, len); | |
d5db4077 | 703 | p1 = SDATA (bestmatch); |
f676868d | 704 | p2 = (unsigned char *) dp->d_name; |
c4c52bb7 | 705 | matchsize = scmp (p1, p2, compare); |
f676868d KH |
706 | if (matchsize < 0) |
707 | matchsize = compare; | |
708 | if (completion_ignore_case) | |
709 | { | |
710 | /* If this is an exact match except for case, | |
711 | use it as the best match rather than one that is not | |
712 | an exact match. This way, we get the case pattern | |
713 | of the actual match. */ | |
f5ec5d3d RS |
714 | /* This tests that the current file is an exact match |
715 | but BESTMATCH is not (it is too long). */ | |
f676868d | 716 | if ((matchsize == len |
177c0ea7 | 717 | && matchsize + !!directoryp |
d5db4077 | 718 | < SCHARS (bestmatch)) |
f676868d KH |
719 | || |
720 | /* If there is no exact match ignoring case, | |
721 | prefer a match that does not change the case | |
722 | of the input. */ | |
f5ec5d3d RS |
723 | /* If there is more than one exact match aside from |
724 | case, and one of them is exact including case, | |
725 | prefer that one. */ | |
726 | /* This == checks that, of current file and BESTMATCH, | |
727 | either both or neither are exact. */ | |
f676868d KH |
728 | (((matchsize == len) |
729 | == | |
177c0ea7 | 730 | (matchsize + !!directoryp |
d5db4077 KR |
731 | == SCHARS (bestmatch))) |
732 | && !bcmp (p2, SDATA (encoded_file), SCHARS (encoded_file)) | |
733 | && bcmp (p1, SDATA (encoded_file), SCHARS (encoded_file)))) | |
abfb1932 | 734 | bestmatch = name; |
14d55bce | 735 | } |
f676868d KH |
736 | |
737 | /* If this dirname all matches, see if implicit following | |
738 | slash does too. */ | |
739 | if (directoryp | |
740 | && compare == matchsize | |
741 | && bestmatchsize > matchsize | |
0b39d75d | 742 | && IS_ANY_SEP (p1[matchsize])) |
f676868d KH |
743 | matchsize++; |
744 | bestmatchsize = matchsize; | |
14d55bce RS |
745 | } |
746 | } | |
c3a3229c RS |
747 | /* This closes the directory. */ |
748 | bestmatch = unbind_to (inner_count, bestmatch); | |
14d55bce RS |
749 | } |
750 | ||
3fcc88cc | 751 | UNGCPRO; |
c3a3229c | 752 | bestmatch = unbind_to (count, bestmatch); |
14d55bce | 753 | |
265a9e55 | 754 | if (all_flag || NILP (bestmatch)) |
24c2a54f | 755 | { |
bd33479f KH |
756 | if (STRINGP (bestmatch)) |
757 | bestmatch = DECODE_FILE (bestmatch); | |
24c2a54f RS |
758 | return bestmatch; |
759 | } | |
d5db4077 | 760 | if (matchcount == 1 && bestmatchsize == SCHARS (file)) |
14d55bce | 761 | return Qt; |
24c2a54f RS |
762 | bestmatch = Fsubstring (bestmatch, make_number (0), |
763 | make_number (bestmatchsize)); | |
764 | /* Now that we got the right initial segment of BESTMATCH, | |
765 | decode it from the coding system in use. */ | |
bd33479f | 766 | bestmatch = DECODE_FILE (bestmatch); |
24c2a54f | 767 | return bestmatch; |
14d55bce RS |
768 | } |
769 | ||
b3f04ced RS |
770 | /* Compare exactly LEN chars of strings at S1 and S2, |
771 | ignoring case if appropriate. | |
772 | Return -1 if strings match, | |
773 | else number of chars that match at the beginning. */ | |
774 | ||
775 | static int | |
776 | scmp (s1, s2, len) | |
777 | register unsigned char *s1, *s2; | |
778 | int len; | |
779 | { | |
780 | register int l = len; | |
781 | ||
782 | if (completion_ignore_case) | |
783 | { | |
784 | while (l && DOWNCASE (*s1++) == DOWNCASE (*s2++)) | |
785 | l--; | |
786 | } | |
787 | else | |
788 | { | |
789 | while (l && *s1++ == *s2++) | |
790 | l--; | |
791 | } | |
792 | if (l == 0) | |
793 | return -1; | |
794 | else | |
795 | return len - l; | |
796 | } | |
797 | ||
dfcf069d | 798 | static int |
14d55bce RS |
799 | file_name_completion_stat (dirname, dp, st_addr) |
800 | Lisp_Object dirname; | |
801 | DIRENTRY *dp; | |
802 | struct stat *st_addr; | |
803 | { | |
804 | int len = NAMLEN (dp); | |
d5db4077 | 805 | int pos = SCHARS (dirname); |
7e3cf34f | 806 | int value; |
14d55bce RS |
807 | char *fullname = (char *) alloca (len + pos + 2); |
808 | ||
04924ee3 RS |
809 | #ifdef MSDOS |
810 | #if __DJGPP__ > 1 | |
811 | /* Some fields of struct stat are *very* expensive to compute on MS-DOS, | |
812 | but aren't required here. Avoid computing the following fields: | |
813 | st_inode, st_size and st_nlink for directories, and the execute bits | |
814 | in st_mode for non-directory files with non-standard extensions. */ | |
815 | ||
816 | unsigned short save_djstat_flags = _djstat_flags; | |
817 | ||
818 | _djstat_flags = _STAT_INODE | _STAT_EXEC_MAGIC | _STAT_DIRSIZE; | |
819 | #endif /* __DJGPP__ > 1 */ | |
820 | #endif /* MSDOS */ | |
821 | ||
d5db4077 | 822 | bcopy (SDATA (dirname), fullname, pos); |
14d55bce | 823 | #ifndef VMS |
0b39d75d RS |
824 | if (!IS_DIRECTORY_SEP (fullname[pos - 1])) |
825 | fullname[pos++] = DIRECTORY_SEP; | |
14d55bce RS |
826 | #endif |
827 | ||
828 | bcopy (dp->d_name, fullname + pos, len); | |
829 | fullname[pos + len] = 0; | |
830 | ||
a889bd0e | 831 | #ifdef S_IFLNK |
7e3cf34f RS |
832 | /* We want to return success if a link points to a nonexistent file, |
833 | but we want to return the status for what the link points to, | |
834 | in case it is a directory. */ | |
835 | value = lstat (fullname, st_addr); | |
836 | stat (fullname, st_addr); | |
837 | return value; | |
a889bd0e | 838 | #else |
04924ee3 RS |
839 | value = stat (fullname, st_addr); |
840 | #ifdef MSDOS | |
841 | #if __DJGPP__ > 1 | |
842 | _djstat_flags = save_djstat_flags; | |
843 | #endif /* __DJGPP__ > 1 */ | |
844 | #endif /* MSDOS */ | |
845 | return value; | |
846 | #endif /* S_IFLNK */ | |
14d55bce RS |
847 | } |
848 | \f | |
3ed991aa RS |
849 | #ifdef VMS |
850 | ||
851 | DEFUN ("file-name-all-versions", Ffile_name_all_versions, | |
335c5470 PJ |
852 | Sfile_name_all_versions, 2, 2, 0, |
853 | doc: /* Return a list of all versions of file name FILE in directory DIRECTORY. */) | |
854 | (file, directory) | |
23bd240f | 855 | Lisp_Object file, directory; |
3ed991aa | 856 | { |
abfb1932 | 857 | return file_name_completion (file, directory, 1, 1, Qnil); |
3ed991aa RS |
858 | } |
859 | ||
860 | DEFUN ("file-version-limit", Ffile_version_limit, Sfile_version_limit, 1, 1, 0, | |
335c5470 PJ |
861 | doc: /* Return the maximum number of versions allowed for FILE. |
862 | Returns nil if the file cannot be opened or if there is no version limit. */) | |
863 | (filename) | |
3ed991aa RS |
864 | Lisp_Object filename; |
865 | { | |
866 | Lisp_Object retval; | |
867 | struct FAB fab; | |
868 | struct RAB rab; | |
869 | struct XABFHC xabfhc; | |
870 | int status; | |
871 | ||
872 | filename = Fexpand_file_name (filename, Qnil); | |
873 | fab = cc$rms_fab; | |
874 | xabfhc = cc$rms_xabfhc; | |
d5db4077 | 875 | fab.fab$l_fna = SDATA (filename); |
3ed991aa RS |
876 | fab.fab$b_fns = strlen (fab.fab$l_fna); |
877 | fab.fab$l_xab = (char *) &xabfhc; | |
878 | status = sys$open (&fab, 0, 0); | |
879 | if (status != RMS$_NORMAL) /* Probably non-existent file */ | |
880 | return Qnil; | |
881 | sys$close (&fab, 0, 0); | |
882 | if (xabfhc.xab$w_verlimit == 32767) | |
883 | return Qnil; /* No version limit */ | |
884 | else | |
885 | return make_number (xabfhc.xab$w_verlimit); | |
886 | } | |
887 | ||
888 | #endif /* VMS */ | |
889 | \f | |
14d55bce RS |
890 | Lisp_Object |
891 | make_time (time) | |
e5124be7 | 892 | time_t time; |
14d55bce RS |
893 | { |
894 | return Fcons (make_number (time >> 16), | |
895 | Fcons (make_number (time & 0177777), Qnil)); | |
896 | } | |
897 | ||
6b61353c | 898 | DEFUN ("file-attributes", Ffile_attributes, Sfile_attributes, 1, 2, 0, |
335c5470 PJ |
899 | doc: /* Return a list of attributes of file FILENAME. |
900 | Value is nil if specified file cannot be opened. | |
6b61353c KH |
901 | |
902 | ID-FORMAT specifies the preferred format of attributes uid and gid (see | |
903 | below) - valid values are 'string and 'integer. The latter is the default, | |
904 | but we plan to change that, so you should specify a non-nil value for | |
905 | ID-FORMAT if you use the returned uid or gid. | |
906 | ||
907 | Elements of the attribute list are: | |
335c5470 PJ |
908 | 0. t for directory, string (name linked to) for symbolic link, or nil. |
909 | 1. Number of links to file. | |
6b61353c KH |
910 | 2. File uid as a string or an integer. If a string value cannot be |
911 | looked up, the integer value is returned. | |
912 | 3. File gid, likewise. | |
335c5470 PJ |
913 | 4. Last access time, as a list of two integers. |
914 | First integer has high-order 16 bits of time, second has low 16 bits. | |
915 | 5. Last modification time, likewise. | |
916 | 6. Last status change time, likewise. | |
917 | 7. Size in bytes. | |
918 | This is a floating point number if the size is too large for an integer. | |
919 | 8. File modes, as a string of ten letters or dashes as in ls -l. | |
e0f24100 | 920 | 9. t if file's gid would change if file were deleted and recreated. |
335c5470 PJ |
921 | 10. inode number. If inode number is larger than the Emacs integer, |
922 | this is a cons cell containing two integers: first the high part, | |
923 | then the low 16 bits. | |
924 | 11. Device number. If it is larger than the Emacs integer, this is | |
6b61353c KH |
925 | a cons cell, similar to the inode number. */) |
926 | (filename, id_format) | |
927 | Lisp_Object filename, id_format; | |
14d55bce RS |
928 | { |
929 | Lisp_Object values[12]; | |
24c2a54f | 930 | Lisp_Object encoded; |
14d55bce | 931 | struct stat s; |
6b61353c KH |
932 | struct passwd *pw; |
933 | struct group *gr; | |
0a974c85 | 934 | #if defined (BSD4_2) || defined (BSD4_3) |
b3edfc9b | 935 | Lisp_Object dirname; |
14d55bce | 936 | struct stat sdir; |
b3edfc9b | 937 | #endif |
14d55bce | 938 | char modes[10]; |
32f4334d | 939 | Lisp_Object handler; |
7435aef8 | 940 | struct gcpro gcpro1; |
345c6b24 | 941 | EMACS_INT uid, gid, ino; |
14d55bce RS |
942 | |
943 | filename = Fexpand_file_name (filename, Qnil); | |
32f4334d RS |
944 | |
945 | /* If the file name has special constructs in it, | |
946 | call the corresponding file handler. */ | |
a617e913 | 947 | handler = Ffind_file_name_handler (filename, Qfile_attributes); |
32f4334d | 948 | if (!NILP (handler)) |
6b61353c KH |
949 | { /* Only pass the extra arg if it is used to help backward compatibility |
950 | with old file handlers which do not implement the new arg. --Stef */ | |
951 | if (NILP (id_format)) | |
952 | return call2 (handler, Qfile_attributes, filename); | |
953 | else | |
954 | return call3 (handler, Qfile_attributes, filename, id_format); | |
955 | } | |
32f4334d | 956 | |
7435aef8 | 957 | GCPRO1 (filename); |
24c2a54f | 958 | encoded = ENCODE_FILE (filename); |
7435aef8 | 959 | UNGCPRO; |
24c2a54f | 960 | |
d5db4077 | 961 | if (lstat (SDATA (encoded), &s) < 0) |
14d55bce RS |
962 | return Qnil; |
963 | ||
964 | switch (s.st_mode & S_IFMT) | |
965 | { | |
966 | default: | |
967 | values[0] = Qnil; break; | |
968 | case S_IFDIR: | |
969 | values[0] = Qt; break; | |
970 | #ifdef S_IFLNK | |
971 | case S_IFLNK: | |
972 | values[0] = Ffile_symlink_p (filename); break; | |
973 | #endif | |
974 | } | |
975 | values[1] = make_number (s.st_nlink); | |
b55445d6 EZ |
976 | /* When make_fixnum_or_float is called below with types that are |
977 | shorter than an int (e.g., `short'), GCC whines about comparison | |
978 | being always false due to limited range of data type. Fix by | |
979 | copying s.st_uid and s.st_gid into int variables. */ | |
980 | uid = s.st_uid; | |
981 | gid = s.st_gid; | |
6b61353c KH |
982 | if (NILP (id_format) || EQ (id_format, Qinteger)) |
983 | { | |
b55445d6 EZ |
984 | values[2] = make_fixnum_or_float (uid); |
985 | values[3] = make_fixnum_or_float (gid); | |
6b61353c KH |
986 | } |
987 | else | |
988 | { | |
8c8a7c58 | 989 | BLOCK_INPUT; |
b55445d6 | 990 | pw = (struct passwd *) getpwuid (uid); |
8b9ae6b0 | 991 | values[2] = (pw ? build_string (pw->pw_name) |
b55445d6 EZ |
992 | : make_fixnum_or_float (uid)); |
993 | gr = (struct group *) getgrgid (gid); | |
8b9ae6b0 | 994 | values[3] = (gr ? build_string (gr->gr_name) |
b55445d6 | 995 | : make_fixnum_or_float (gid)); |
8c8a7c58 | 996 | UNBLOCK_INPUT; |
6b61353c | 997 | } |
14d55bce RS |
998 | values[4] = make_time (s.st_atime); |
999 | values[5] = make_time (s.st_mtime); | |
1000 | values[6] = make_time (s.st_ctime); | |
68c45bf0 | 1001 | values[7] = make_number (s.st_size); |
cb1846b4 | 1002 | /* If the size is out of range for an integer, return a float. */ |
60fc6069 | 1003 | if (XINT (values[7]) != s.st_size) |
cb1846b4 | 1004 | values[7] = make_float ((double)s.st_size); |
4bc12672 JR |
1005 | /* If the size is negative, and its type is long, convert it back to |
1006 | positive. */ | |
1007 | if (s.st_size < 0 && sizeof (s.st_size) == sizeof (long)) | |
1008 | values[7] = make_float ((double) ((unsigned long) s.st_size)); | |
1009 | ||
14d55bce RS |
1010 | filemodestring (&s, modes); |
1011 | values[8] = make_string (modes, 10); | |
0a974c85 | 1012 | #if defined (BSD4_2) || defined (BSD4_3) /* file gid will be dir gid */ |
14d55bce | 1013 | dirname = Ffile_name_directory (filename); |
24c2a54f RS |
1014 | if (! NILP (dirname)) |
1015 | encoded = ENCODE_FILE (dirname); | |
d5db4077 | 1016 | if (! NILP (dirname) && stat (SDATA (encoded), &sdir) == 0) |
b55445d6 | 1017 | values[9] = (sdir.st_gid != gid) ? Qt : Qnil; |
14d55bce RS |
1018 | else /* if we can't tell, assume worst */ |
1019 | values[9] = Qt; | |
1020 | #else /* file gid will be egid */ | |
b55445d6 | 1021 | values[9] = (gid != getegid ()) ? Qt : Qnil; |
14d55bce | 1022 | #endif /* BSD4_2 (or BSD4_3) */ |
b55445d6 | 1023 | /* Shut up GCC warnings in FIXNUM_OVERFLOW_P below. */ |
294f1153 EZ |
1024 | #ifdef WINDOWSNT |
1025 | { | |
1026 | /* The bit-shuffling we do in w32.c:stat can turn on the MSB, which | |
1027 | will produce negative inode numbers. People don't like that, so | |
1028 | force a positive inode instead. */ | |
1029 | unsigned short tem = s.st_ino; | |
1030 | ino = tem; | |
1031 | } | |
1032 | #else | |
b55445d6 | 1033 | ino = s.st_ino; |
294f1153 | 1034 | #endif |
b55445d6 | 1035 | if (FIXNUM_OVERFLOW_P (ino)) |
4c637faa RS |
1036 | /* To allow inode numbers larger than VALBITS, separate the bottom |
1037 | 16 bits. */ | |
b55445d6 EZ |
1038 | values[10] = Fcons (make_number (ino >> 16), |
1039 | make_number (ino & 0xffff)); | |
4c637faa RS |
1040 | else |
1041 | /* But keep the most common cases as integers. */ | |
b55445d6 | 1042 | values[10] = make_number (ino); |
68c45bf0 PE |
1043 | |
1044 | /* Likewise for device. */ | |
f8edfd76 | 1045 | if (FIXNUM_OVERFLOW_P (s.st_dev)) |
68c45bf0 PE |
1046 | values[11] = Fcons (make_number (s.st_dev >> 16), |
1047 | make_number (s.st_dev & 0xffff)); | |
1048 | else | |
1049 | values[11] = make_number (s.st_dev); | |
1050 | ||
14d55bce RS |
1051 | return Flist (sizeof(values) / sizeof(values[0]), values); |
1052 | } | |
4424b255 GV |
1053 | |
1054 | DEFUN ("file-attributes-lessp", Ffile_attributes_lessp, Sfile_attributes_lessp, 2, 2, 0, | |
335c5470 PJ |
1055 | doc: /* Return t if first arg file attributes list is less than second. |
1056 | Comparison is in lexicographic order and case is significant. */) | |
1057 | (f1, f2) | |
4424b255 GV |
1058 | Lisp_Object f1, f2; |
1059 | { | |
1060 | return Fstring_lessp (Fcar (f1), Fcar (f2)); | |
1061 | } | |
14d55bce | 1062 | \f |
dfcf069d | 1063 | void |
14d55bce RS |
1064 | syms_of_dired () |
1065 | { | |
32f4334d | 1066 | Qdirectory_files = intern ("directory-files"); |
4424b255 | 1067 | Qdirectory_files_and_attributes = intern ("directory-files-and-attributes"); |
32f4334d RS |
1068 | Qfile_name_completion = intern ("file-name-completion"); |
1069 | Qfile_name_all_completions = intern ("file-name-all-completions"); | |
434e6714 | 1070 | Qfile_attributes = intern ("file-attributes"); |
4424b255 | 1071 | Qfile_attributes_lessp = intern ("file-attributes-lessp"); |
32f4334d | 1072 | |
a2d3836c | 1073 | staticpro (&Qdirectory_files); |
4424b255 | 1074 | staticpro (&Qdirectory_files_and_attributes); |
a2d3836c EN |
1075 | staticpro (&Qfile_name_completion); |
1076 | staticpro (&Qfile_name_all_completions); | |
1077 | staticpro (&Qfile_attributes); | |
4424b255 | 1078 | staticpro (&Qfile_attributes_lessp); |
a2d3836c | 1079 | |
14d55bce | 1080 | defsubr (&Sdirectory_files); |
4424b255 | 1081 | defsubr (&Sdirectory_files_and_attributes); |
14d55bce RS |
1082 | defsubr (&Sfile_name_completion); |
1083 | #ifdef VMS | |
1084 | defsubr (&Sfile_name_all_versions); | |
3ed991aa | 1085 | defsubr (&Sfile_version_limit); |
14d55bce RS |
1086 | #endif /* VMS */ |
1087 | defsubr (&Sfile_name_all_completions); | |
1088 | defsubr (&Sfile_attributes); | |
4424b255 | 1089 | defsubr (&Sfile_attributes_lessp); |
14d55bce | 1090 | |
14d55bce | 1091 | DEFVAR_LISP ("completion-ignored-extensions", &Vcompletion_ignored_extensions, |
407a52c4 LT |
1092 | doc: /* Completion ignores file names ending in any string in this list. |
1093 | It does not ignore them if all possible completions end in one of | |
1094 | these strings or when displaying a list of completions. | |
1095 | It ignores directory names if they match any string in this list which | |
1096 | ends in a slash. */); | |
14d55bce RS |
1097 | Vcompletion_ignored_extensions = Qnil; |
1098 | } | |
6b61353c KH |
1099 | |
1100 | /* arch-tag: 1ac8deca-4d8f-4d41-ade9-089154d98c03 | |
1101 | (do not change this comment) */ |