Commit | Line | Data |
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14d55bce | 1 | /* Lisp functions for making directory listings. |
3a22ee35 | 2 | Copyright (C) 1985, 1986, 1993, 1994 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 | ||
3964b9a7 RS |
21 | #include <config.h> |
22 | ||
14d55bce RS |
23 | #include <stdio.h> |
24 | #include <sys/types.h> | |
25 | #include <sys/stat.h> | |
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; |
f676868d | 96 | extern Lisp_Object Vcompletion_regexp_list; |
ccbcf979 | 97 | |
14d55bce | 98 | Lisp_Object Vcompletion_ignored_extensions; |
408e56e1 | 99 | Lisp_Object Qcompletion_ignored_extensions; |
14d55bce | 100 | Lisp_Object Qcompletion_ignore_case; |
32f4334d RS |
101 | Lisp_Object Qdirectory_files; |
102 | Lisp_Object Qfile_name_completion; | |
103 | Lisp_Object Qfile_name_all_completions; | |
434e6714 | 104 | Lisp_Object Qfile_attributes; |
14d55bce RS |
105 | \f |
106 | DEFUN ("directory-files", Fdirectory_files, Sdirectory_files, 1, 4, 0, | |
107 | "Return a list of names of files in DIRECTORY.\n\ | |
108 | There are three optional arguments:\n\ | |
109 | If FULL is non-nil, absolute pathnames of the files are returned.\n\ | |
110 | If MATCH is non-nil, only pathnames containing that regexp are returned.\n\ | |
111 | If NOSORT is non-nil, the list is not sorted--its order is unpredictable.\n\ | |
112 | NOSORT is useful if you plan to sort the result yourself.") | |
113 | (dirname, full, match, nosort) | |
114 | Lisp_Object dirname, full, match, nosort; | |
115 | { | |
116 | DIR *d; | |
117 | int length; | |
6155fae1 | 118 | Lisp_Object list, name, dirfilename; |
32f4334d RS |
119 | Lisp_Object handler; |
120 | ||
121 | /* If the file name has special constructs in it, | |
122 | call the corresponding file handler. */ | |
a617e913 | 123 | handler = Ffind_file_name_handler (dirname, Qdirectory_files); |
32f4334d RS |
124 | if (!NILP (handler)) |
125 | { | |
126 | Lisp_Object args[6]; | |
127 | ||
128 | args[0] = handler; | |
129 | args[1] = Qdirectory_files; | |
130 | args[2] = dirname; | |
131 | args[3] = full; | |
132 | args[4] = match; | |
133 | args[5] = nosort; | |
134 | return Ffuncall (6, args); | |
135 | } | |
14d55bce | 136 | |
6155fae1 JB |
137 | { |
138 | struct gcpro gcpro1, gcpro2; | |
139 | ||
140 | /* Because of file name handlers, these functions might call | |
141 | Ffuncall, and cause a GC. */ | |
142 | GCPRO1 (match); | |
143 | dirname = Fexpand_file_name (dirname, Qnil); | |
3254eb1e | 144 | UNGCPRO; |
6155fae1 JB |
145 | GCPRO2 (match, dirname); |
146 | dirfilename = Fdirectory_file_name (dirname); | |
147 | UNGCPRO; | |
148 | } | |
149 | ||
265a9e55 | 150 | if (!NILP (match)) |
14d55bce RS |
151 | { |
152 | CHECK_STRING (match, 3); | |
ebb9e16f JB |
153 | |
154 | /* MATCH might be a flawed regular expression. Rather than | |
155 | catching and signalling our own errors, we just call | |
156 | compile_pattern to do the work for us. */ | |
14d55bce | 157 | #ifdef VMS |
986ffb24 | 158 | compile_pattern (match, &searchbuf, 0, |
14d55bce RS |
159 | buffer_defaults.downcase_table->contents); |
160 | #else | |
ebb9e16f | 161 | compile_pattern (match, &searchbuf, 0, 0); |
14d55bce RS |
162 | #endif |
163 | } | |
164 | ||
6155fae1 JB |
165 | /* Now searchbuf is the compiled form of MATCH; don't call anything |
166 | which might compile a new regexp until we're done with the loop! */ | |
167 | ||
168 | /* Do this opendir after anything which might signal an error; if | |
169 | an error is signalled while the directory stream is open, we | |
170 | have to make sure it gets closed, and setting up an | |
171 | unwind_protect to do so would be a pain. */ | |
172 | d = opendir (XSTRING (dirfilename)->data); | |
173 | if (! d) | |
14d55bce RS |
174 | report_file_error ("Opening directory", Fcons (dirname, Qnil)); |
175 | ||
176 | list = Qnil; | |
177 | length = XSTRING (dirname)->size; | |
178 | ||
179 | /* Loop reading blocks */ | |
180 | while (1) | |
181 | { | |
182 | DIRENTRY *dp = readdir (d); | |
183 | int len; | |
184 | ||
185 | if (!dp) break; | |
186 | len = NAMLEN (dp); | |
128ecc89 | 187 | if (DIRENTRY_NONEMPTY (dp)) |
14d55bce | 188 | { |
265a9e55 | 189 | if (NILP (match) |
14d55bce RS |
190 | || (0 <= re_search (&searchbuf, dp->d_name, len, 0, len, 0))) |
191 | { | |
265a9e55 | 192 | if (!NILP (full)) |
14d55bce RS |
193 | { |
194 | int index = XSTRING (dirname)->size; | |
195 | int total = len + index; | |
196 | #ifndef VMS | |
197 | if (length == 0 | |
198 | || XSTRING (dirname)->data[length - 1] != '/') | |
199 | total++; | |
200 | #endif /* VMS */ | |
201 | ||
202 | name = make_uninit_string (total); | |
203 | bcopy (XSTRING (dirname)->data, XSTRING (name)->data, | |
204 | index); | |
205 | #ifndef VMS | |
206 | if (length == 0 | |
207 | || XSTRING (dirname)->data[length - 1] != '/') | |
208 | XSTRING (name)->data[index++] = '/'; | |
209 | #endif /* VMS */ | |
210 | bcopy (dp->d_name, XSTRING (name)->data + index, len); | |
211 | } | |
212 | else | |
213 | name = make_string (dp->d_name, len); | |
214 | list = Fcons (name, list); | |
215 | } | |
216 | } | |
217 | } | |
218 | closedir (d); | |
265a9e55 | 219 | if (!NILP (nosort)) |
14d55bce RS |
220 | return list; |
221 | return Fsort (Fnreverse (list), Qstring_lessp); | |
222 | } | |
223 | \f | |
224 | Lisp_Object file_name_completion (); | |
225 | ||
226 | DEFUN ("file-name-completion", Ffile_name_completion, Sfile_name_completion, | |
227 | 2, 2, 0, | |
228 | "Complete file name FILE in directory DIR.\n\ | |
229 | Returns the longest string\n\ | |
230 | common to all filenames in DIR that start with FILE.\n\ | |
231 | If there is only one and FILE matches it exactly, returns t.\n\ | |
232 | Returns nil if DIR contains no name starting with FILE.") | |
233 | (file, dirname) | |
234 | Lisp_Object file, dirname; | |
235 | { | |
32f4334d | 236 | Lisp_Object handler; |
14d55bce RS |
237 | /* Don't waste time trying to complete a null string. |
238 | Besides, this case happens when user is being asked for | |
239 | a directory name and has supplied one ending in a /. | |
240 | We would not want to add anything in that case | |
241 | even if there are some unique characters in that directory. */ | |
88cf1852 | 242 | if (STRINGP (file) && XSTRING (file)->size == 0) |
14d55bce | 243 | return file; |
32f4334d RS |
244 | |
245 | /* If the file name has special constructs in it, | |
246 | call the corresponding file handler. */ | |
a617e913 | 247 | handler = Ffind_file_name_handler (dirname, Qfile_name_completion); |
32f4334d RS |
248 | if (!NILP (handler)) |
249 | return call3 (handler, Qfile_name_completion, file, dirname); | |
250 | ||
14d55bce RS |
251 | return file_name_completion (file, dirname, 0, 0); |
252 | } | |
253 | ||
254 | DEFUN ("file-name-all-completions", Ffile_name_all_completions, | |
255 | Sfile_name_all_completions, 2, 2, 0, | |
256 | "Return a list of all completions of file name FILE in directory DIR.\n\ | |
257 | These are all file names in directory DIR which begin with FILE.") | |
258 | (file, dirname) | |
259 | Lisp_Object file, dirname; | |
260 | { | |
32f4334d RS |
261 | Lisp_Object handler; |
262 | ||
263 | /* If the file name has special constructs in it, | |
264 | call the corresponding file handler. */ | |
a617e913 | 265 | handler = Ffind_file_name_handler (dirname, Qfile_name_all_completions); |
32f4334d RS |
266 | if (!NILP (handler)) |
267 | return call3 (handler, Qfile_name_all_completions, file, dirname); | |
268 | ||
14d55bce RS |
269 | return file_name_completion (file, dirname, 1, 0); |
270 | } | |
271 | ||
14d55bce RS |
272 | Lisp_Object |
273 | file_name_completion (file, dirname, all_flag, ver_flag) | |
274 | Lisp_Object file, dirname; | |
275 | int all_flag, ver_flag; | |
276 | { | |
277 | DIR *d; | |
278 | DIRENTRY *dp; | |
279 | int bestmatchsize, skip; | |
280 | register int compare, matchsize; | |
281 | unsigned char *p1, *p2; | |
282 | int matchcount = 0; | |
283 | Lisp_Object bestmatch, tem, elt, name; | |
284 | struct stat st; | |
285 | int directoryp; | |
286 | int passcount; | |
287 | int count = specpdl_ptr - specpdl; | |
3fcc88cc RS |
288 | struct gcpro gcpro1, gcpro2, gcpro3; |
289 | ||
14d55bce RS |
290 | #ifdef VMS |
291 | extern DIRENTRY * readdirver (); | |
292 | ||
293 | DIRENTRY *((* readfunc) ()); | |
294 | ||
295 | /* Filename completion on VMS ignores case, since VMS filesys does. */ | |
296 | specbind (Qcompletion_ignore_case, Qt); | |
297 | ||
298 | readfunc = readdir; | |
299 | if (ver_flag) | |
300 | readfunc = readdirver; | |
301 | file = Fupcase (file); | |
302 | #else /* not VMS */ | |
303 | CHECK_STRING (file, 0); | |
304 | #endif /* not VMS */ | |
305 | ||
128ecc89 RS |
306 | #ifdef FILE_SYSTEM_CASE |
307 | file = FILE_SYSTEM_CASE (file); | |
308 | #endif | |
14d55bce | 309 | bestmatch = Qnil; |
3fcc88cc RS |
310 | GCPRO3 (file, dirname, bestmatch); |
311 | dirname = Fexpand_file_name (dirname, Qnil); | |
14d55bce RS |
312 | |
313 | /* With passcount = 0, ignore files that end in an ignored extension. | |
314 | If nothing found then try again with passcount = 1, don't ignore them. | |
315 | If looking for all completions, start with passcount = 1, | |
316 | so always take even the ignored ones. | |
317 | ||
318 | ** It would not actually be helpful to the user to ignore any possible | |
319 | completions when making a list of them.** */ | |
320 | ||
265a9e55 | 321 | for (passcount = !!all_flag; NILP (bestmatch) && passcount < 2; passcount++) |
14d55bce RS |
322 | { |
323 | if (!(d = opendir (XSTRING (Fdirectory_file_name (dirname))->data))) | |
324 | report_file_error ("Opening directory", Fcons (dirname, Qnil)); | |
325 | ||
326 | /* Loop reading blocks */ | |
327 | /* (att3b compiler bug requires do a null comparison this way) */ | |
328 | while (1) | |
329 | { | |
330 | DIRENTRY *dp; | |
331 | int len; | |
332 | ||
333 | #ifdef VMS | |
334 | dp = (*readfunc) (d); | |
335 | #else | |
336 | dp = readdir (d); | |
337 | #endif | |
338 | if (!dp) break; | |
339 | ||
340 | len = NAMLEN (dp); | |
341 | ||
265a9e55 | 342 | if (!NILP (Vquit_flag) && NILP (Vinhibit_quit)) |
14d55bce | 343 | goto quit; |
128ecc89 | 344 | if (! DIRENTRY_NONEMPTY (dp) |
14d55bce RS |
345 | || len < XSTRING (file)->size |
346 | || 0 <= scmp (dp->d_name, XSTRING (file)->data, | |
347 | XSTRING (file)->size)) | |
348 | continue; | |
349 | ||
350 | if (file_name_completion_stat (dirname, dp, &st) < 0) | |
351 | continue; | |
352 | ||
353 | directoryp = ((st.st_mode & S_IFMT) == S_IFDIR); | |
354 | tem = Qnil; | |
355 | if (!directoryp) | |
356 | { | |
357 | /* Compare extensions-to-be-ignored against end of this file name */ | |
358 | /* if name is not an exact match against specified string */ | |
359 | if (!passcount && len > XSTRING (file)->size) | |
360 | /* and exit this for loop if a match is found */ | |
361 | for (tem = Vcompletion_ignored_extensions; | |
362 | CONSP (tem); tem = XCONS (tem)->cdr) | |
363 | { | |
364 | elt = XCONS (tem)->car; | |
88cf1852 | 365 | if (!STRINGP (elt)) continue; |
14d55bce RS |
366 | skip = len - XSTRING (elt)->size; |
367 | if (skip < 0) continue; | |
368 | ||
369 | if (0 <= scmp (dp->d_name + skip, | |
370 | XSTRING (elt)->data, | |
371 | XSTRING (elt)->size)) | |
372 | continue; | |
373 | break; | |
374 | } | |
375 | } | |
376 | ||
f676868d KH |
377 | /* If an ignored-extensions match was found, |
378 | don't process this name as a completion. */ | |
379 | if (!passcount && CONSP (tem)) | |
380 | continue; | |
381 | ||
382 | if (!passcount) | |
14d55bce | 383 | { |
f676868d KH |
384 | Lisp_Object regexps; |
385 | Lisp_Object zero; | |
386 | XFASTINT (zero) = 0; | |
387 | ||
388 | /* Ignore this element if it fails to match all the regexps. */ | |
389 | for (regexps = Vcompletion_regexp_list; CONSP (regexps); | |
390 | regexps = XCONS (regexps)->cdr) | |
391 | { | |
392 | tem = Fstring_match (XCONS (regexps)->car, elt, zero); | |
393 | if (NILP (tem)) | |
394 | break; | |
395 | } | |
396 | if (CONSP (regexps)) | |
397 | continue; | |
398 | } | |
14d55bce | 399 | |
f676868d | 400 | /* Update computation of how much all possible completions match */ |
14d55bce | 401 | |
f676868d KH |
402 | matchcount++; |
403 | ||
404 | if (all_flag || NILP (bestmatch)) | |
405 | { | |
406 | /* This is a possible completion */ | |
407 | if (directoryp) | |
14d55bce | 408 | { |
f676868d KH |
409 | /* This completion is a directory; make it end with '/' */ |
410 | name = Ffile_name_as_directory (make_string (dp->d_name, len)); | |
411 | } | |
412 | else | |
413 | name = make_string (dp->d_name, len); | |
414 | if (all_flag) | |
415 | { | |
416 | bestmatch = Fcons (name, bestmatch); | |
14d55bce RS |
417 | } |
418 | else | |
419 | { | |
f676868d KH |
420 | bestmatch = name; |
421 | bestmatchsize = XSTRING (name)->size; | |
422 | } | |
423 | } | |
424 | else | |
425 | { | |
426 | compare = min (bestmatchsize, len); | |
427 | p1 = XSTRING (bestmatch)->data; | |
428 | p2 = (unsigned char *) dp->d_name; | |
429 | matchsize = scmp(p1, p2, compare); | |
430 | if (matchsize < 0) | |
431 | matchsize = compare; | |
432 | if (completion_ignore_case) | |
433 | { | |
434 | /* If this is an exact match except for case, | |
435 | use it as the best match rather than one that is not | |
436 | an exact match. This way, we get the case pattern | |
437 | of the actual match. */ | |
438 | if ((matchsize == len | |
439 | && matchsize + !!directoryp | |
440 | < XSTRING (bestmatch)->size) | |
441 | || | |
442 | /* If there is no exact match ignoring case, | |
443 | prefer a match that does not change the case | |
444 | of the input. */ | |
445 | (((matchsize == len) | |
446 | == | |
447 | (matchsize + !!directoryp | |
448 | == XSTRING (bestmatch)->size)) | |
449 | /* If there is more than one exact match aside from | |
450 | case, and one of them is exact including case, | |
451 | prefer that one. */ | |
452 | && !bcmp (p2, XSTRING (file)->data, XSTRING (file)->size) | |
453 | && bcmp (p1, XSTRING (file)->data, XSTRING (file)->size))) | |
97e98a56 | 454 | { |
f676868d KH |
455 | bestmatch = make_string (dp->d_name, len); |
456 | if (directoryp) | |
457 | bestmatch = Ffile_name_as_directory (bestmatch); | |
97e98a56 | 458 | } |
14d55bce | 459 | } |
f676868d KH |
460 | |
461 | /* If this dirname all matches, see if implicit following | |
462 | slash does too. */ | |
463 | if (directoryp | |
464 | && compare == matchsize | |
465 | && bestmatchsize > matchsize | |
466 | && p1[matchsize] == '/') | |
467 | matchsize++; | |
468 | bestmatchsize = matchsize; | |
14d55bce RS |
469 | } |
470 | } | |
471 | closedir (d); | |
472 | } | |
473 | ||
3fcc88cc RS |
474 | UNGCPRO; |
475 | bestmatch = unbind_to (count, bestmatch); | |
14d55bce | 476 | |
265a9e55 | 477 | if (all_flag || NILP (bestmatch)) |
14d55bce RS |
478 | return bestmatch; |
479 | if (matchcount == 1 && bestmatchsize == XSTRING (file)->size) | |
480 | return Qt; | |
481 | return Fsubstring (bestmatch, make_number (0), make_number (bestmatchsize)); | |
482 | quit: | |
483 | if (d) closedir (d); | |
484 | Vquit_flag = Qnil; | |
485 | return Fsignal (Qquit, Qnil); | |
486 | } | |
487 | ||
488 | file_name_completion_stat (dirname, dp, st_addr) | |
489 | Lisp_Object dirname; | |
490 | DIRENTRY *dp; | |
491 | struct stat *st_addr; | |
492 | { | |
493 | int len = NAMLEN (dp); | |
494 | int pos = XSTRING (dirname)->size; | |
7e3cf34f | 495 | int value; |
14d55bce RS |
496 | char *fullname = (char *) alloca (len + pos + 2); |
497 | ||
498 | bcopy (XSTRING (dirname)->data, fullname, pos); | |
499 | #ifndef VMS | |
500 | if (fullname[pos - 1] != '/') | |
501 | fullname[pos++] = '/'; | |
502 | #endif | |
503 | ||
504 | bcopy (dp->d_name, fullname + pos, len); | |
505 | fullname[pos + len] = 0; | |
506 | ||
a889bd0e | 507 | #ifdef S_IFLNK |
7e3cf34f RS |
508 | /* We want to return success if a link points to a nonexistent file, |
509 | but we want to return the status for what the link points to, | |
510 | in case it is a directory. */ | |
511 | value = lstat (fullname, st_addr); | |
512 | stat (fullname, st_addr); | |
513 | return value; | |
a889bd0e | 514 | #else |
14d55bce | 515 | return stat (fullname, st_addr); |
a889bd0e | 516 | #endif |
14d55bce RS |
517 | } |
518 | \f | |
3ed991aa RS |
519 | #ifdef VMS |
520 | ||
521 | DEFUN ("file-name-all-versions", Ffile_name_all_versions, | |
522 | Sfile_name_all_versions, 2, 2, 0, | |
523 | "Return a list of all versions of file name FILE in directory DIR.") | |
524 | (file, dirname) | |
525 | Lisp_Object file, dirname; | |
526 | { | |
527 | return file_name_completion (file, dirname, 1, 1); | |
528 | } | |
529 | ||
530 | DEFUN ("file-version-limit", Ffile_version_limit, Sfile_version_limit, 1, 1, 0, | |
531 | "Return the maximum number of versions allowed for FILE.\n\ | |
532 | Returns nil if the file cannot be opened or if there is no version limit.") | |
533 | (filename) | |
534 | Lisp_Object filename; | |
535 | { | |
536 | Lisp_Object retval; | |
537 | struct FAB fab; | |
538 | struct RAB rab; | |
539 | struct XABFHC xabfhc; | |
540 | int status; | |
541 | ||
542 | filename = Fexpand_file_name (filename, Qnil); | |
543 | fab = cc$rms_fab; | |
544 | xabfhc = cc$rms_xabfhc; | |
545 | fab.fab$l_fna = XSTRING (filename)->data; | |
546 | fab.fab$b_fns = strlen (fab.fab$l_fna); | |
547 | fab.fab$l_xab = (char *) &xabfhc; | |
548 | status = sys$open (&fab, 0, 0); | |
549 | if (status != RMS$_NORMAL) /* Probably non-existent file */ | |
550 | return Qnil; | |
551 | sys$close (&fab, 0, 0); | |
552 | if (xabfhc.xab$w_verlimit == 32767) | |
553 | return Qnil; /* No version limit */ | |
554 | else | |
555 | return make_number (xabfhc.xab$w_verlimit); | |
556 | } | |
557 | ||
558 | #endif /* VMS */ | |
559 | \f | |
14d55bce RS |
560 | Lisp_Object |
561 | make_time (time) | |
562 | int time; | |
563 | { | |
564 | return Fcons (make_number (time >> 16), | |
565 | Fcons (make_number (time & 0177777), Qnil)); | |
566 | } | |
567 | ||
568 | DEFUN ("file-attributes", Ffile_attributes, Sfile_attributes, 1, 1, 0, | |
569 | "Return a list of attributes of file FILENAME.\n\ | |
570 | Value is nil if specified file cannot be opened.\n\ | |
571 | Otherwise, list elements are:\n\ | |
572 | 0. t for directory, string (name linked to) for symbolic link, or nil.\n\ | |
573 | 1. Number of links to file.\n\ | |
574 | 2. File uid.\n\ | |
575 | 3. File gid.\n\ | |
576 | 4. Last access time, as a list of two integers.\n\ | |
577 | First integer has high-order 16 bits of time, second has low 16 bits.\n\ | |
578 | 5. Last modification time, likewise.\n\ | |
579 | 6. Last status change time, likewise.\n\ | |
60fc6069 | 580 | 7. Size in bytes (-1, if number is out of range).\n\ |
14d55bce RS |
581 | 8. File modes, as a string of ten letters or dashes as in ls -l.\n\ |
582 | 9. t iff file's gid would change if file were deleted and recreated.\n\ | |
583 | 10. inode number.\n\ | |
584 | 11. Device number.\n\ | |
585 | \n\ | |
ccbcf979 | 586 | If file does not exist, returns nil.") |
14d55bce RS |
587 | (filename) |
588 | Lisp_Object filename; | |
589 | { | |
590 | Lisp_Object values[12]; | |
591 | Lisp_Object dirname; | |
592 | struct stat s; | |
593 | struct stat sdir; | |
594 | char modes[10]; | |
32f4334d | 595 | Lisp_Object handler; |
14d55bce RS |
596 | |
597 | filename = Fexpand_file_name (filename, Qnil); | |
32f4334d RS |
598 | |
599 | /* If the file name has special constructs in it, | |
600 | call the corresponding file handler. */ | |
a617e913 | 601 | handler = Ffind_file_name_handler (filename, Qfile_attributes); |
32f4334d RS |
602 | if (!NILP (handler)) |
603 | return call2 (handler, Qfile_attributes, filename); | |
604 | ||
14d55bce RS |
605 | if (lstat (XSTRING (filename)->data, &s) < 0) |
606 | return Qnil; | |
607 | ||
128ecc89 RS |
608 | #ifdef MSDOS |
609 | { | |
610 | char *tmpnam = XSTRING (Ffile_name_nondirectory (filename))->data; | |
611 | int l = strlen (tmpnam); | |
612 | ||
613 | if (l >= 5 | |
614 | && S_ISREG (s.st_mode) | |
615 | && (stricmp (&tmpnam[l - 4], ".com") == 0 | |
616 | || stricmp (&tmpnam[l - 4], ".exe") == 0 | |
617 | || stricmp (&tmpnam[l - 4], ".bat") == 0)) | |
618 | { | |
619 | s.st_mode |= S_IEXEC; | |
620 | } | |
621 | } | |
622 | #endif /* MSDOS */ | |
623 | ||
14d55bce RS |
624 | switch (s.st_mode & S_IFMT) |
625 | { | |
626 | default: | |
627 | values[0] = Qnil; break; | |
628 | case S_IFDIR: | |
629 | values[0] = Qt; break; | |
630 | #ifdef S_IFLNK | |
631 | case S_IFLNK: | |
632 | values[0] = Ffile_symlink_p (filename); break; | |
633 | #endif | |
634 | } | |
635 | values[1] = make_number (s.st_nlink); | |
636 | values[2] = make_number (s.st_uid); | |
637 | values[3] = make_number (s.st_gid); | |
638 | values[4] = make_time (s.st_atime); | |
639 | values[5] = make_time (s.st_mtime); | |
640 | values[6] = make_time (s.st_ctime); | |
ed2ef6c9 | 641 | values[7] = make_number ((int) s.st_size); |
60fc6069 RS |
642 | /* If the size is out of range, give back -1. */ |
643 | if (XINT (values[7]) != s.st_size) | |
644 | XSETINT (values[7], -1); | |
14d55bce RS |
645 | filemodestring (&s, modes); |
646 | values[8] = make_string (modes, 10); | |
647 | #ifdef BSD4_3 /* Gross kludge to avoid lack of "#if defined(...)" in VMS */ | |
eb8c3be9 | 648 | #define BSD4_2 /* A new meaning to the term `backwards compatibility' */ |
14d55bce RS |
649 | #endif |
650 | #ifdef BSD4_2 /* file gid will be dir gid */ | |
651 | dirname = Ffile_name_directory (filename); | |
ccbcf979 | 652 | if (! NILP (dirname) && stat (XSTRING (dirname)->data, &sdir) == 0) |
14d55bce RS |
653 | values[9] = (sdir.st_gid != s.st_gid) ? Qt : Qnil; |
654 | else /* if we can't tell, assume worst */ | |
655 | values[9] = Qt; | |
656 | #else /* file gid will be egid */ | |
657 | values[9] = (s.st_gid != getegid ()) ? Qt : Qnil; | |
658 | #endif /* BSD4_2 (or BSD4_3) */ | |
659 | #ifdef BSD4_3 | |
660 | #undef BSD4_2 /* ok, you can look again without throwing up */ | |
661 | #endif | |
662 | values[10] = make_number (s.st_ino); | |
663 | values[11] = make_number (s.st_dev); | |
664 | return Flist (sizeof(values) / sizeof(values[0]), values); | |
665 | } | |
666 | \f | |
667 | syms_of_dired () | |
668 | { | |
32f4334d RS |
669 | Qdirectory_files = intern ("directory-files"); |
670 | Qfile_name_completion = intern ("file-name-completion"); | |
671 | Qfile_name_all_completions = intern ("file-name-all-completions"); | |
434e6714 | 672 | Qfile_attributes = intern ("file-attributes"); |
32f4334d | 673 | |
14d55bce RS |
674 | defsubr (&Sdirectory_files); |
675 | defsubr (&Sfile_name_completion); | |
676 | #ifdef VMS | |
677 | defsubr (&Sfile_name_all_versions); | |
3ed991aa | 678 | defsubr (&Sfile_version_limit); |
14d55bce RS |
679 | #endif /* VMS */ |
680 | defsubr (&Sfile_name_all_completions); | |
681 | defsubr (&Sfile_attributes); | |
682 | ||
683 | #ifdef VMS | |
684 | Qcompletion_ignore_case = intern ("completion-ignore-case"); | |
685 | staticpro (&Qcompletion_ignore_case); | |
686 | #endif /* VMS */ | |
687 | ||
408e56e1 KH |
688 | Qcompletion_ignored_extensions = intern ("completion-ignored-extensions"); |
689 | staticpro (&Qcompletion_ignored_extensions); | |
14d55bce RS |
690 | DEFVAR_LISP ("completion-ignored-extensions", &Vcompletion_ignored_extensions, |
691 | "*Completion ignores filenames ending in any string in this list.\n\ | |
692 | This variable does not affect lists of possible completions,\n\ | |
693 | but does affect the commands that actually do completions."); | |
694 | Vcompletion_ignored_extensions = Qnil; | |
695 | } |