Commit | Line | Data |
---|---|---|
14d55bce | 1 | /* Lisp functions for making directory listings. |
c6c5df7f | 2 | Copyright (C) 1985, 1986, 1993 Free Software Foundation, Inc. |
14d55bce RS |
3 | |
4 | This file is part of GNU Emacs. | |
5 | ||
6 | GNU Emacs is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 1, or (at your option) | |
9 | any later version. | |
10 | ||
11 | GNU Emacs is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GNU Emacs; see the file COPYING. If not, write to | |
18 | the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
19 | ||
20 | ||
21 | #include <stdio.h> | |
22 | #include <sys/types.h> | |
23 | #include <sys/stat.h> | |
24 | ||
18160b98 | 25 | #include <config.h> |
14d55bce | 26 | |
3ed991aa RS |
27 | #ifdef VMS |
28 | #include <string.h> | |
29 | #include <rms.h> | |
30 | #include <rmsdef.h> | |
31 | #endif | |
32 | ||
d6717cdb JB |
33 | /* The d_nameln member of a struct dirent includes the '\0' character |
34 | on some systems, but not on others. What's worse, you can't tell | |
35 | at compile-time which one it will be, since it really depends on | |
36 | the sort of system providing the filesystem you're reading from, | |
37 | not the system you are running on. Paul Eggert | |
38 | <eggert@bi.twinsun.com> says this occurs when Emacs is running on a | |
39 | SunOS 4.1.2 host, reading a directory that is remote-mounted from a | |
40 | Solaris 2.1 host and is in a native Solaris 2.1 filesystem. | |
41 | ||
42 | Since applying strlen to the name always works, we'll just do that. */ | |
43 | #define NAMLEN(p) strlen (p->d_name) | |
44 | ||
14d55bce RS |
45 | #ifdef SYSV_SYSTEM_DIR |
46 | ||
47 | #include <dirent.h> | |
48 | #define DIRENTRY struct dirent | |
14d55bce | 49 | |
128ecc89 | 50 | #else /* not SYSV_SYSTEM_DIR */ |
14d55bce RS |
51 | |
52 | #ifdef NONSYSTEM_DIR_LIBRARY | |
53 | #include "ndir.h" | |
54 | #else /* not NONSYSTEM_DIR_LIBRARY */ | |
128ecc89 RS |
55 | #ifdef MSDOS |
56 | #include <dirent.h> | |
57 | #else | |
14d55bce | 58 | #include <sys/dir.h> |
128ecc89 | 59 | #endif |
14d55bce RS |
60 | #endif /* not NONSYSTEM_DIR_LIBRARY */ |
61 | ||
128ecc89 | 62 | #ifndef MSDOS |
14d55bce | 63 | #define DIRENTRY struct direct |
14d55bce RS |
64 | |
65 | extern DIR *opendir (); | |
66 | extern struct direct *readdir (); | |
67 | ||
128ecc89 RS |
68 | #endif /* not MSDOS */ |
69 | #endif /* not SYSV_SYSTEM_DIR */ | |
70 | ||
71 | #ifdef MSDOS | |
72 | #define DIRENTRY_NONEMPTY(p) ((p)->d_name[0] != 0) | |
73 | #else | |
74 | #define DIRENTRY_NONEMPTY(p) ((p)->d_ino) | |
14d55bce RS |
75 | #endif |
76 | ||
14d55bce RS |
77 | #include "lisp.h" |
78 | #include "buffer.h" | |
79 | #include "commands.h" | |
80 | ||
81 | #include "regex.h" | |
14d55bce | 82 | |
c7e466e1 RS |
83 | /* A search buffer, with a fastmap allocated and ready to go. */ |
84 | extern struct re_pattern_buffer searchbuf; | |
85 | ||
14d55bce RS |
86 | #define min(a, b) ((a) < (b) ? (a) : (b)) |
87 | ||
88 | /* if system does not have symbolic links, it does not have lstat. | |
89 | In that case, use ordinary stat instead. */ | |
90 | ||
91 | #ifndef S_IFLNK | |
92 | #define lstat stat | |
93 | #endif | |
94 | ||
97e98a56 | 95 | extern int completion_ignore_case; |
997bf68d | 96 | extern Lisp_Object Ffind_file_name_handler (); |
ccbcf979 | 97 | |
14d55bce RS |
98 | Lisp_Object Vcompletion_ignored_extensions; |
99 | ||
100 | Lisp_Object Qcompletion_ignore_case; | |
32f4334d RS |
101 | |
102 | Lisp_Object Qdirectory_files; | |
103 | Lisp_Object Qfile_name_completion; | |
104 | Lisp_Object Qfile_name_all_completions; | |
434e6714 | 105 | Lisp_Object Qfile_attributes; |
14d55bce RS |
106 | \f |
107 | DEFUN ("directory-files", Fdirectory_files, Sdirectory_files, 1, 4, 0, | |
108 | "Return a list of names of files in DIRECTORY.\n\ | |
109 | There are three optional arguments:\n\ | |
110 | If FULL is non-nil, absolute pathnames of the files are returned.\n\ | |
111 | If MATCH is non-nil, only pathnames containing that regexp are returned.\n\ | |
112 | If NOSORT is non-nil, the list is not sorted--its order is unpredictable.\n\ | |
113 | NOSORT is useful if you plan to sort the result yourself.") | |
114 | (dirname, full, match, nosort) | |
115 | Lisp_Object dirname, full, match, nosort; | |
116 | { | |
117 | DIR *d; | |
118 | int length; | |
6155fae1 | 119 | Lisp_Object list, name, dirfilename; |
32f4334d RS |
120 | Lisp_Object handler; |
121 | ||
122 | /* If the file name has special constructs in it, | |
123 | call the corresponding file handler. */ | |
997bf68d | 124 | handler = Ffind_file_name_handler (dirname); |
32f4334d RS |
125 | if (!NILP (handler)) |
126 | { | |
127 | Lisp_Object args[6]; | |
128 | ||
129 | args[0] = handler; | |
130 | args[1] = Qdirectory_files; | |
131 | args[2] = dirname; | |
132 | args[3] = full; | |
133 | args[4] = match; | |
134 | args[5] = nosort; | |
135 | return Ffuncall (6, args); | |
136 | } | |
14d55bce | 137 | |
6155fae1 JB |
138 | { |
139 | struct gcpro gcpro1, gcpro2; | |
140 | ||
141 | /* Because of file name handlers, these functions might call | |
142 | Ffuncall, and cause a GC. */ | |
143 | GCPRO1 (match); | |
144 | dirname = Fexpand_file_name (dirname, Qnil); | |
3254eb1e | 145 | UNGCPRO; |
6155fae1 JB |
146 | GCPRO2 (match, dirname); |
147 | dirfilename = Fdirectory_file_name (dirname); | |
148 | UNGCPRO; | |
149 | } | |
150 | ||
265a9e55 | 151 | if (!NILP (match)) |
14d55bce RS |
152 | { |
153 | CHECK_STRING (match, 3); | |
ebb9e16f JB |
154 | |
155 | /* MATCH might be a flawed regular expression. Rather than | |
156 | catching and signalling our own errors, we just call | |
157 | compile_pattern to do the work for us. */ | |
14d55bce | 158 | #ifdef VMS |
986ffb24 | 159 | compile_pattern (match, &searchbuf, 0, |
14d55bce RS |
160 | buffer_defaults.downcase_table->contents); |
161 | #else | |
ebb9e16f | 162 | compile_pattern (match, &searchbuf, 0, 0); |
14d55bce RS |
163 | #endif |
164 | } | |
165 | ||
6155fae1 JB |
166 | /* Now searchbuf is the compiled form of MATCH; don't call anything |
167 | which might compile a new regexp until we're done with the loop! */ | |
168 | ||
169 | /* Do this opendir after anything which might signal an error; if | |
170 | an error is signalled while the directory stream is open, we | |
171 | have to make sure it gets closed, and setting up an | |
172 | unwind_protect to do so would be a pain. */ | |
173 | d = opendir (XSTRING (dirfilename)->data); | |
174 | if (! d) | |
14d55bce RS |
175 | report_file_error ("Opening directory", Fcons (dirname, Qnil)); |
176 | ||
177 | list = Qnil; | |
178 | length = XSTRING (dirname)->size; | |
179 | ||
180 | /* Loop reading blocks */ | |
181 | while (1) | |
182 | { | |
183 | DIRENTRY *dp = readdir (d); | |
184 | int len; | |
185 | ||
186 | if (!dp) break; | |
187 | len = NAMLEN (dp); | |
128ecc89 | 188 | if (DIRENTRY_NONEMPTY (dp)) |
14d55bce | 189 | { |
265a9e55 | 190 | if (NILP (match) |
14d55bce RS |
191 | || (0 <= re_search (&searchbuf, dp->d_name, len, 0, len, 0))) |
192 | { | |
265a9e55 | 193 | if (!NILP (full)) |
14d55bce RS |
194 | { |
195 | int index = XSTRING (dirname)->size; | |
196 | int total = len + index; | |
197 | #ifndef VMS | |
198 | if (length == 0 | |
199 | || XSTRING (dirname)->data[length - 1] != '/') | |
200 | total++; | |
201 | #endif /* VMS */ | |
202 | ||
203 | name = make_uninit_string (total); | |
204 | bcopy (XSTRING (dirname)->data, XSTRING (name)->data, | |
205 | index); | |
206 | #ifndef VMS | |
207 | if (length == 0 | |
208 | || XSTRING (dirname)->data[length - 1] != '/') | |
209 | XSTRING (name)->data[index++] = '/'; | |
210 | #endif /* VMS */ | |
211 | bcopy (dp->d_name, XSTRING (name)->data + index, len); | |
212 | } | |
213 | else | |
214 | name = make_string (dp->d_name, len); | |
215 | list = Fcons (name, list); | |
216 | } | |
217 | } | |
218 | } | |
219 | closedir (d); | |
265a9e55 | 220 | if (!NILP (nosort)) |
14d55bce RS |
221 | return list; |
222 | return Fsort (Fnreverse (list), Qstring_lessp); | |
223 | } | |
224 | \f | |
225 | Lisp_Object file_name_completion (); | |
226 | ||
227 | DEFUN ("file-name-completion", Ffile_name_completion, Sfile_name_completion, | |
228 | 2, 2, 0, | |
229 | "Complete file name FILE in directory DIR.\n\ | |
230 | Returns the longest string\n\ | |
231 | common to all filenames in DIR that start with FILE.\n\ | |
232 | If there is only one and FILE matches it exactly, returns t.\n\ | |
233 | Returns nil if DIR contains no name starting with FILE.") | |
234 | (file, dirname) | |
235 | Lisp_Object file, dirname; | |
236 | { | |
32f4334d | 237 | Lisp_Object handler; |
14d55bce RS |
238 | /* Don't waste time trying to complete a null string. |
239 | Besides, this case happens when user is being asked for | |
240 | a directory name and has supplied one ending in a /. | |
241 | We would not want to add anything in that case | |
242 | even if there are some unique characters in that directory. */ | |
243 | if (XTYPE (file) == Lisp_String && XSTRING (file)->size == 0) | |
244 | return file; | |
32f4334d RS |
245 | |
246 | /* If the file name has special constructs in it, | |
247 | call the corresponding file handler. */ | |
997bf68d | 248 | handler = Ffind_file_name_handler (dirname); |
32f4334d RS |
249 | if (!NILP (handler)) |
250 | return call3 (handler, Qfile_name_completion, file, dirname); | |
251 | ||
14d55bce RS |
252 | return file_name_completion (file, dirname, 0, 0); |
253 | } | |
254 | ||
255 | DEFUN ("file-name-all-completions", Ffile_name_all_completions, | |
256 | Sfile_name_all_completions, 2, 2, 0, | |
257 | "Return a list of all completions of file name FILE in directory DIR.\n\ | |
258 | These are all file names in directory DIR which begin with FILE.") | |
259 | (file, dirname) | |
260 | Lisp_Object file, dirname; | |
261 | { | |
32f4334d RS |
262 | Lisp_Object handler; |
263 | ||
264 | /* If the file name has special constructs in it, | |
265 | call the corresponding file handler. */ | |
997bf68d | 266 | handler = Ffind_file_name_handler (dirname); |
32f4334d RS |
267 | if (!NILP (handler)) |
268 | return call3 (handler, Qfile_name_all_completions, file, dirname); | |
269 | ||
14d55bce RS |
270 | return file_name_completion (file, dirname, 1, 0); |
271 | } | |
272 | ||
14d55bce RS |
273 | Lisp_Object |
274 | file_name_completion (file, dirname, all_flag, ver_flag) | |
275 | Lisp_Object file, dirname; | |
276 | int all_flag, ver_flag; | |
277 | { | |
278 | DIR *d; | |
279 | DIRENTRY *dp; | |
280 | int bestmatchsize, skip; | |
281 | register int compare, matchsize; | |
282 | unsigned char *p1, *p2; | |
283 | int matchcount = 0; | |
284 | Lisp_Object bestmatch, tem, elt, name; | |
285 | struct stat st; | |
286 | int directoryp; | |
287 | int passcount; | |
288 | int count = specpdl_ptr - specpdl; | |
3fcc88cc RS |
289 | struct gcpro gcpro1, gcpro2, gcpro3; |
290 | ||
14d55bce RS |
291 | #ifdef VMS |
292 | extern DIRENTRY * readdirver (); | |
293 | ||
294 | DIRENTRY *((* readfunc) ()); | |
295 | ||
296 | /* Filename completion on VMS ignores case, since VMS filesys does. */ | |
297 | specbind (Qcompletion_ignore_case, Qt); | |
298 | ||
299 | readfunc = readdir; | |
300 | if (ver_flag) | |
301 | readfunc = readdirver; | |
302 | file = Fupcase (file); | |
303 | #else /* not VMS */ | |
304 | CHECK_STRING (file, 0); | |
305 | #endif /* not VMS */ | |
306 | ||
128ecc89 RS |
307 | #ifdef FILE_SYSTEM_CASE |
308 | file = FILE_SYSTEM_CASE (file); | |
309 | #endif | |
14d55bce | 310 | bestmatch = Qnil; |
3fcc88cc RS |
311 | GCPRO3 (file, dirname, bestmatch); |
312 | dirname = Fexpand_file_name (dirname, Qnil); | |
14d55bce RS |
313 | |
314 | /* With passcount = 0, ignore files that end in an ignored extension. | |
315 | If nothing found then try again with passcount = 1, don't ignore them. | |
316 | If looking for all completions, start with passcount = 1, | |
317 | so always take even the ignored ones. | |
318 | ||
319 | ** It would not actually be helpful to the user to ignore any possible | |
320 | completions when making a list of them.** */ | |
321 | ||
265a9e55 | 322 | for (passcount = !!all_flag; NILP (bestmatch) && passcount < 2; passcount++) |
14d55bce RS |
323 | { |
324 | if (!(d = opendir (XSTRING (Fdirectory_file_name (dirname))->data))) | |
325 | report_file_error ("Opening directory", Fcons (dirname, Qnil)); | |
326 | ||
327 | /* Loop reading blocks */ | |
328 | /* (att3b compiler bug requires do a null comparison this way) */ | |
329 | while (1) | |
330 | { | |
331 | DIRENTRY *dp; | |
332 | int len; | |
333 | ||
334 | #ifdef VMS | |
335 | dp = (*readfunc) (d); | |
336 | #else | |
337 | dp = readdir (d); | |
338 | #endif | |
339 | if (!dp) break; | |
340 | ||
341 | len = NAMLEN (dp); | |
342 | ||
265a9e55 | 343 | if (!NILP (Vquit_flag) && NILP (Vinhibit_quit)) |
14d55bce | 344 | goto quit; |
128ecc89 | 345 | if (! DIRENTRY_NONEMPTY (dp) |
14d55bce RS |
346 | || len < XSTRING (file)->size |
347 | || 0 <= scmp (dp->d_name, XSTRING (file)->data, | |
348 | XSTRING (file)->size)) | |
349 | continue; | |
350 | ||
351 | if (file_name_completion_stat (dirname, dp, &st) < 0) | |
352 | continue; | |
353 | ||
354 | directoryp = ((st.st_mode & S_IFMT) == S_IFDIR); | |
355 | tem = Qnil; | |
356 | if (!directoryp) | |
357 | { | |
358 | /* Compare extensions-to-be-ignored against end of this file name */ | |
359 | /* if name is not an exact match against specified string */ | |
360 | if (!passcount && len > XSTRING (file)->size) | |
361 | /* and exit this for loop if a match is found */ | |
362 | for (tem = Vcompletion_ignored_extensions; | |
363 | CONSP (tem); tem = XCONS (tem)->cdr) | |
364 | { | |
365 | elt = XCONS (tem)->car; | |
366 | if (XTYPE (elt) != Lisp_String) continue; | |
367 | skip = len - XSTRING (elt)->size; | |
368 | if (skip < 0) continue; | |
369 | ||
370 | if (0 <= scmp (dp->d_name + skip, | |
371 | XSTRING (elt)->data, | |
372 | XSTRING (elt)->size)) | |
373 | continue; | |
374 | break; | |
375 | } | |
376 | } | |
377 | ||
378 | /* Unless an ignored-extensions match was found, | |
379 | process this name as a completion */ | |
380 | if (passcount || !CONSP (tem)) | |
381 | { | |
382 | /* Update computation of how much all possible completions match */ | |
383 | ||
384 | matchcount++; | |
385 | ||
265a9e55 | 386 | if (all_flag || NILP (bestmatch)) |
14d55bce RS |
387 | { |
388 | /* This is a possible completion */ | |
389 | if (directoryp) | |
390 | { | |
391 | /* This completion is a directory; make it end with '/' */ | |
392 | name = Ffile_name_as_directory (make_string (dp->d_name, len)); | |
393 | } | |
394 | else | |
395 | name = make_string (dp->d_name, len); | |
396 | if (all_flag) | |
397 | { | |
398 | bestmatch = Fcons (name, bestmatch); | |
399 | } | |
400 | else | |
401 | { | |
402 | bestmatch = name; | |
403 | bestmatchsize = XSTRING (name)->size; | |
404 | } | |
405 | } | |
406 | else | |
407 | { | |
408 | compare = min (bestmatchsize, len); | |
409 | p1 = XSTRING (bestmatch)->data; | |
410 | p2 = (unsigned char *) dp->d_name; | |
411 | matchsize = scmp(p1, p2, compare); | |
412 | if (matchsize < 0) | |
413 | matchsize = compare; | |
97e98a56 BF |
414 | if (completion_ignore_case) |
415 | { | |
416 | /* If this is an exact match except for case, | |
417 | use it as the best match rather than one that is not | |
418 | an exact match. This way, we get the case pattern | |
419 | of the actual match. */ | |
420 | if ((matchsize == len | |
421 | && matchsize + !!directoryp | |
422 | < XSTRING (bestmatch)->size) | |
423 | || | |
424 | /* If there is no exact match ignoring case, | |
425 | prefer a match that does not change the case | |
426 | of the input. */ | |
427 | (((matchsize == len) | |
428 | == | |
429 | (matchsize + !!directoryp | |
430 | == XSTRING (bestmatch)->size)) | |
431 | /* If there is more than one exact match aside from | |
432 | case, and one of them is exact including case, | |
433 | prefer that one. */ | |
434 | && !bcmp (p2, XSTRING (file)->data, XSTRING (file)->size) | |
435 | && bcmp (p1, XSTRING (file)->data, XSTRING (file)->size))) | |
436 | { | |
437 | bestmatch = make_string (dp->d_name, len); | |
438 | if (directoryp) | |
439 | bestmatch = Ffile_name_as_directory (bestmatch); | |
440 | } | |
441 | } | |
442 | ||
443 | /* If this dirname all matches, see if implicit following | |
444 | slash does too. */ | |
14d55bce RS |
445 | if (directoryp |
446 | && compare == matchsize | |
447 | && bestmatchsize > matchsize | |
448 | && p1[matchsize] == '/') | |
449 | matchsize++; | |
97e98a56 | 450 | bestmatchsize = matchsize; |
14d55bce RS |
451 | } |
452 | } | |
453 | } | |
454 | closedir (d); | |
455 | } | |
456 | ||
3fcc88cc RS |
457 | UNGCPRO; |
458 | bestmatch = unbind_to (count, bestmatch); | |
14d55bce | 459 | |
265a9e55 | 460 | if (all_flag || NILP (bestmatch)) |
14d55bce RS |
461 | return bestmatch; |
462 | if (matchcount == 1 && bestmatchsize == XSTRING (file)->size) | |
463 | return Qt; | |
464 | return Fsubstring (bestmatch, make_number (0), make_number (bestmatchsize)); | |
465 | quit: | |
466 | if (d) closedir (d); | |
467 | Vquit_flag = Qnil; | |
468 | return Fsignal (Qquit, Qnil); | |
469 | } | |
470 | ||
471 | file_name_completion_stat (dirname, dp, st_addr) | |
472 | Lisp_Object dirname; | |
473 | DIRENTRY *dp; | |
474 | struct stat *st_addr; | |
475 | { | |
476 | int len = NAMLEN (dp); | |
477 | int pos = XSTRING (dirname)->size; | |
478 | char *fullname = (char *) alloca (len + pos + 2); | |
479 | ||
480 | bcopy (XSTRING (dirname)->data, fullname, pos); | |
481 | #ifndef VMS | |
482 | if (fullname[pos - 1] != '/') | |
483 | fullname[pos++] = '/'; | |
484 | #endif | |
485 | ||
486 | bcopy (dp->d_name, fullname + pos, len); | |
487 | fullname[pos + len] = 0; | |
488 | ||
a889bd0e RS |
489 | #ifdef S_IFLNK |
490 | return lstat (fullname, st_addr); | |
491 | #else | |
14d55bce | 492 | return stat (fullname, st_addr); |
a889bd0e | 493 | #endif |
14d55bce RS |
494 | } |
495 | \f | |
3ed991aa RS |
496 | #ifdef VMS |
497 | ||
498 | DEFUN ("file-name-all-versions", Ffile_name_all_versions, | |
499 | Sfile_name_all_versions, 2, 2, 0, | |
500 | "Return a list of all versions of file name FILE in directory DIR.") | |
501 | (file, dirname) | |
502 | Lisp_Object file, dirname; | |
503 | { | |
504 | return file_name_completion (file, dirname, 1, 1); | |
505 | } | |
506 | ||
507 | DEFUN ("file-version-limit", Ffile_version_limit, Sfile_version_limit, 1, 1, 0, | |
508 | "Return the maximum number of versions allowed for FILE.\n\ | |
509 | Returns nil if the file cannot be opened or if there is no version limit.") | |
510 | (filename) | |
511 | Lisp_Object filename; | |
512 | { | |
513 | Lisp_Object retval; | |
514 | struct FAB fab; | |
515 | struct RAB rab; | |
516 | struct XABFHC xabfhc; | |
517 | int status; | |
518 | ||
519 | filename = Fexpand_file_name (filename, Qnil); | |
520 | fab = cc$rms_fab; | |
521 | xabfhc = cc$rms_xabfhc; | |
522 | fab.fab$l_fna = XSTRING (filename)->data; | |
523 | fab.fab$b_fns = strlen (fab.fab$l_fna); | |
524 | fab.fab$l_xab = (char *) &xabfhc; | |
525 | status = sys$open (&fab, 0, 0); | |
526 | if (status != RMS$_NORMAL) /* Probably non-existent file */ | |
527 | return Qnil; | |
528 | sys$close (&fab, 0, 0); | |
529 | if (xabfhc.xab$w_verlimit == 32767) | |
530 | return Qnil; /* No version limit */ | |
531 | else | |
532 | return make_number (xabfhc.xab$w_verlimit); | |
533 | } | |
534 | ||
535 | #endif /* VMS */ | |
536 | \f | |
14d55bce RS |
537 | Lisp_Object |
538 | make_time (time) | |
539 | int time; | |
540 | { | |
541 | return Fcons (make_number (time >> 16), | |
542 | Fcons (make_number (time & 0177777), Qnil)); | |
543 | } | |
544 | ||
545 | DEFUN ("file-attributes", Ffile_attributes, Sfile_attributes, 1, 1, 0, | |
546 | "Return a list of attributes of file FILENAME.\n\ | |
547 | Value is nil if specified file cannot be opened.\n\ | |
548 | Otherwise, list elements are:\n\ | |
549 | 0. t for directory, string (name linked to) for symbolic link, or nil.\n\ | |
550 | 1. Number of links to file.\n\ | |
551 | 2. File uid.\n\ | |
552 | 3. File gid.\n\ | |
553 | 4. Last access time, as a list of two integers.\n\ | |
554 | First integer has high-order 16 bits of time, second has low 16 bits.\n\ | |
555 | 5. Last modification time, likewise.\n\ | |
556 | 6. Last status change time, likewise.\n\ | |
60fc6069 | 557 | 7. Size in bytes (-1, if number is out of range).\n\ |
14d55bce RS |
558 | 8. File modes, as a string of ten letters or dashes as in ls -l.\n\ |
559 | 9. t iff file's gid would change if file were deleted and recreated.\n\ | |
560 | 10. inode number.\n\ | |
561 | 11. Device number.\n\ | |
562 | \n\ | |
ccbcf979 | 563 | If file does not exist, returns nil.") |
14d55bce RS |
564 | (filename) |
565 | Lisp_Object filename; | |
566 | { | |
567 | Lisp_Object values[12]; | |
568 | Lisp_Object dirname; | |
569 | struct stat s; | |
570 | struct stat sdir; | |
571 | char modes[10]; | |
32f4334d | 572 | Lisp_Object handler; |
14d55bce RS |
573 | |
574 | filename = Fexpand_file_name (filename, Qnil); | |
32f4334d RS |
575 | |
576 | /* If the file name has special constructs in it, | |
577 | call the corresponding file handler. */ | |
997bf68d | 578 | handler = Ffind_file_name_handler (filename); |
32f4334d RS |
579 | if (!NILP (handler)) |
580 | return call2 (handler, Qfile_attributes, filename); | |
581 | ||
14d55bce RS |
582 | if (lstat (XSTRING (filename)->data, &s) < 0) |
583 | return Qnil; | |
584 | ||
128ecc89 RS |
585 | #ifdef MSDOS |
586 | { | |
587 | char *tmpnam = XSTRING (Ffile_name_nondirectory (filename))->data; | |
588 | int l = strlen (tmpnam); | |
589 | ||
590 | if (l >= 5 | |
591 | && S_ISREG (s.st_mode) | |
592 | && (stricmp (&tmpnam[l - 4], ".com") == 0 | |
593 | || stricmp (&tmpnam[l - 4], ".exe") == 0 | |
594 | || stricmp (&tmpnam[l - 4], ".bat") == 0)) | |
595 | { | |
596 | s.st_mode |= S_IEXEC; | |
597 | } | |
598 | } | |
599 | #endif /* MSDOS */ | |
600 | ||
14d55bce RS |
601 | switch (s.st_mode & S_IFMT) |
602 | { | |
603 | default: | |
604 | values[0] = Qnil; break; | |
605 | case S_IFDIR: | |
606 | values[0] = Qt; break; | |
607 | #ifdef S_IFLNK | |
608 | case S_IFLNK: | |
609 | values[0] = Ffile_symlink_p (filename); break; | |
610 | #endif | |
611 | } | |
612 | values[1] = make_number (s.st_nlink); | |
613 | values[2] = make_number (s.st_uid); | |
614 | values[3] = make_number (s.st_gid); | |
615 | values[4] = make_time (s.st_atime); | |
616 | values[5] = make_time (s.st_mtime); | |
617 | values[6] = make_time (s.st_ctime); | |
14d55bce | 618 | values[7] = make_number (s.st_size); |
60fc6069 RS |
619 | /* If the size is out of range, give back -1. */ |
620 | if (XINT (values[7]) != s.st_size) | |
621 | XSETINT (values[7], -1); | |
14d55bce RS |
622 | filemodestring (&s, modes); |
623 | values[8] = make_string (modes, 10); | |
624 | #ifdef BSD4_3 /* Gross kludge to avoid lack of "#if defined(...)" in VMS */ | |
eb8c3be9 | 625 | #define BSD4_2 /* A new meaning to the term `backwards compatibility' */ |
14d55bce RS |
626 | #endif |
627 | #ifdef BSD4_2 /* file gid will be dir gid */ | |
628 | dirname = Ffile_name_directory (filename); | |
ccbcf979 | 629 | if (! NILP (dirname) && stat (XSTRING (dirname)->data, &sdir) == 0) |
14d55bce RS |
630 | values[9] = (sdir.st_gid != s.st_gid) ? Qt : Qnil; |
631 | else /* if we can't tell, assume worst */ | |
632 | values[9] = Qt; | |
633 | #else /* file gid will be egid */ | |
634 | values[9] = (s.st_gid != getegid ()) ? Qt : Qnil; | |
635 | #endif /* BSD4_2 (or BSD4_3) */ | |
636 | #ifdef BSD4_3 | |
637 | #undef BSD4_2 /* ok, you can look again without throwing up */ | |
638 | #endif | |
639 | values[10] = make_number (s.st_ino); | |
640 | values[11] = make_number (s.st_dev); | |
641 | return Flist (sizeof(values) / sizeof(values[0]), values); | |
642 | } | |
643 | \f | |
644 | syms_of_dired () | |
645 | { | |
32f4334d RS |
646 | Qdirectory_files = intern ("directory-files"); |
647 | Qfile_name_completion = intern ("file-name-completion"); | |
648 | Qfile_name_all_completions = intern ("file-name-all-completions"); | |
434e6714 | 649 | Qfile_attributes = intern ("file-attributes"); |
32f4334d | 650 | |
14d55bce RS |
651 | defsubr (&Sdirectory_files); |
652 | defsubr (&Sfile_name_completion); | |
653 | #ifdef VMS | |
654 | defsubr (&Sfile_name_all_versions); | |
3ed991aa | 655 | defsubr (&Sfile_version_limit); |
14d55bce RS |
656 | #endif /* VMS */ |
657 | defsubr (&Sfile_name_all_completions); | |
658 | defsubr (&Sfile_attributes); | |
659 | ||
660 | #ifdef VMS | |
661 | Qcompletion_ignore_case = intern ("completion-ignore-case"); | |
662 | staticpro (&Qcompletion_ignore_case); | |
663 | #endif /* VMS */ | |
664 | ||
665 | DEFVAR_LISP ("completion-ignored-extensions", &Vcompletion_ignored_extensions, | |
666 | "*Completion ignores filenames ending in any string in this list.\n\ | |
667 | This variable does not affect lists of possible completions,\n\ | |
668 | but does affect the commands that actually do completions."); | |
669 | Vcompletion_ignored_extensions = Qnil; | |
670 | } |