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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 | |
e50c66d3 KH |
83 | /* Returns a search buffer, with a fastmap allocated and ready to go. */ |
84 | extern struct re_pattern_buffer *compile_pattern (); | |
c7e466e1 | 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; |
14d55bce | 99 | Lisp_Object Qcompletion_ignore_case; |
32f4334d RS |
100 | Lisp_Object Qdirectory_files; |
101 | Lisp_Object Qfile_name_completion; | |
102 | Lisp_Object Qfile_name_all_completions; | |
434e6714 | 103 | Lisp_Object Qfile_attributes; |
14d55bce RS |
104 | \f |
105 | DEFUN ("directory-files", Fdirectory_files, Sdirectory_files, 1, 4, 0, | |
106 | "Return a list of names of files in DIRECTORY.\n\ | |
107 | There are three optional arguments:\n\ | |
108 | If FULL is non-nil, absolute pathnames of the files are returned.\n\ | |
109 | If MATCH is non-nil, only pathnames containing that regexp are returned.\n\ | |
110 | If NOSORT is non-nil, the list is not sorted--its order is unpredictable.\n\ | |
111 | NOSORT is useful if you plan to sort the result yourself.") | |
112 | (dirname, full, match, nosort) | |
113 | Lisp_Object dirname, full, match, nosort; | |
114 | { | |
115 | DIR *d; | |
116 | int length; | |
6155fae1 | 117 | Lisp_Object list, name, dirfilename; |
32f4334d | 118 | Lisp_Object handler; |
e50c66d3 | 119 | struct re_pattern_buffer *bufp; |
32f4334d RS |
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 |
e50c66d3 KH |
158 | bufp = compile_pattern (match, 0, |
159 | buffer_defaults.downcase_table->contents); | |
14d55bce | 160 | #else |
e50c66d3 | 161 | bufp = compile_pattern (match, 0, 0); |
14d55bce RS |
162 | #endif |
163 | } | |
164 | ||
e50c66d3 | 165 | /* Now *bufp is the compiled form of MATCH; don't call anything |
6155fae1 JB |
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) |
e50c66d3 | 190 | || (0 <= re_search (bufp, dp->d_name, len, 0, len, 0))) |
14d55bce | 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; |
32f4334d RS |
237 | |
238 | /* If the file name has special constructs in it, | |
239 | call the corresponding file handler. */ | |
a617e913 | 240 | handler = Ffind_file_name_handler (dirname, Qfile_name_completion); |
32f4334d RS |
241 | if (!NILP (handler)) |
242 | return call3 (handler, Qfile_name_completion, file, dirname); | |
243 | ||
14d55bce RS |
244 | return file_name_completion (file, dirname, 0, 0); |
245 | } | |
246 | ||
247 | DEFUN ("file-name-all-completions", Ffile_name_all_completions, | |
248 | Sfile_name_all_completions, 2, 2, 0, | |
249 | "Return a list of all completions of file name FILE in directory DIR.\n\ | |
250 | These are all file names in directory DIR which begin with FILE.") | |
251 | (file, dirname) | |
252 | Lisp_Object file, dirname; | |
253 | { | |
32f4334d RS |
254 | Lisp_Object handler; |
255 | ||
256 | /* If the file name has special constructs in it, | |
257 | call the corresponding file handler. */ | |
a617e913 | 258 | handler = Ffind_file_name_handler (dirname, Qfile_name_all_completions); |
32f4334d RS |
259 | if (!NILP (handler)) |
260 | return call3 (handler, Qfile_name_all_completions, file, dirname); | |
261 | ||
14d55bce RS |
262 | return file_name_completion (file, dirname, 1, 0); |
263 | } | |
264 | ||
14d55bce RS |
265 | Lisp_Object |
266 | file_name_completion (file, dirname, all_flag, ver_flag) | |
267 | Lisp_Object file, dirname; | |
268 | int all_flag, ver_flag; | |
269 | { | |
270 | DIR *d; | |
271 | DIRENTRY *dp; | |
272 | int bestmatchsize, skip; | |
273 | register int compare, matchsize; | |
274 | unsigned char *p1, *p2; | |
275 | int matchcount = 0; | |
276 | Lisp_Object bestmatch, tem, elt, name; | |
277 | struct stat st; | |
278 | int directoryp; | |
279 | int passcount; | |
280 | int count = specpdl_ptr - specpdl; | |
3fcc88cc RS |
281 | struct gcpro gcpro1, gcpro2, gcpro3; |
282 | ||
14d55bce RS |
283 | #ifdef VMS |
284 | extern DIRENTRY * readdirver (); | |
285 | ||
286 | DIRENTRY *((* readfunc) ()); | |
287 | ||
288 | /* Filename completion on VMS ignores case, since VMS filesys does. */ | |
289 | specbind (Qcompletion_ignore_case, Qt); | |
290 | ||
291 | readfunc = readdir; | |
292 | if (ver_flag) | |
293 | readfunc = readdirver; | |
294 | file = Fupcase (file); | |
295 | #else /* not VMS */ | |
296 | CHECK_STRING (file, 0); | |
297 | #endif /* not VMS */ | |
298 | ||
128ecc89 RS |
299 | #ifdef FILE_SYSTEM_CASE |
300 | file = FILE_SYSTEM_CASE (file); | |
301 | #endif | |
14d55bce | 302 | bestmatch = Qnil; |
3fcc88cc RS |
303 | GCPRO3 (file, dirname, bestmatch); |
304 | dirname = Fexpand_file_name (dirname, Qnil); | |
14d55bce RS |
305 | |
306 | /* With passcount = 0, ignore files that end in an ignored extension. | |
307 | If nothing found then try again with passcount = 1, don't ignore them. | |
308 | If looking for all completions, start with passcount = 1, | |
309 | so always take even the ignored ones. | |
310 | ||
311 | ** It would not actually be helpful to the user to ignore any possible | |
312 | completions when making a list of them.** */ | |
313 | ||
265a9e55 | 314 | for (passcount = !!all_flag; NILP (bestmatch) && passcount < 2; passcount++) |
14d55bce RS |
315 | { |
316 | if (!(d = opendir (XSTRING (Fdirectory_file_name (dirname))->data))) | |
317 | report_file_error ("Opening directory", Fcons (dirname, Qnil)); | |
318 | ||
319 | /* Loop reading blocks */ | |
320 | /* (att3b compiler bug requires do a null comparison this way) */ | |
321 | while (1) | |
322 | { | |
323 | DIRENTRY *dp; | |
324 | int len; | |
325 | ||
326 | #ifdef VMS | |
327 | dp = (*readfunc) (d); | |
328 | #else | |
329 | dp = readdir (d); | |
330 | #endif | |
331 | if (!dp) break; | |
332 | ||
333 | len = NAMLEN (dp); | |
334 | ||
265a9e55 | 335 | if (!NILP (Vquit_flag) && NILP (Vinhibit_quit)) |
14d55bce | 336 | goto quit; |
128ecc89 | 337 | if (! DIRENTRY_NONEMPTY (dp) |
14d55bce RS |
338 | || len < XSTRING (file)->size |
339 | || 0 <= scmp (dp->d_name, XSTRING (file)->data, | |
340 | XSTRING (file)->size)) | |
341 | continue; | |
342 | ||
343 | if (file_name_completion_stat (dirname, dp, &st) < 0) | |
344 | continue; | |
345 | ||
346 | directoryp = ((st.st_mode & S_IFMT) == S_IFDIR); | |
347 | tem = Qnil; | |
ad456ad4 RS |
348 | if (directoryp) |
349 | { | |
350 | #ifndef TRIVIAL_DIRECTORY_ENTRY | |
351 | #define TRIVIAL_DIRECTORY_ENTRY(n) (!strcmp (n, ".") || !strcmp (n, "..")) | |
352 | #endif | |
353 | /* "." and ".." are never interesting as completions, but are | |
354 | actually in the way in a directory contains only one file. */ | |
355 | if (!passcount && TRIVIAL_DIRECTORY_ENTRY (dp->d_name)) | |
356 | continue; | |
357 | } | |
358 | else | |
14d55bce RS |
359 | { |
360 | /* Compare extensions-to-be-ignored against end of this file name */ | |
361 | /* if name is not an exact match against specified string */ | |
362 | if (!passcount && len > XSTRING (file)->size) | |
363 | /* and exit this for loop if a match is found */ | |
364 | for (tem = Vcompletion_ignored_extensions; | |
365 | CONSP (tem); tem = XCONS (tem)->cdr) | |
366 | { | |
367 | elt = XCONS (tem)->car; | |
88cf1852 | 368 | if (!STRINGP (elt)) continue; |
14d55bce RS |
369 | skip = len - XSTRING (elt)->size; |
370 | if (skip < 0) continue; | |
371 | ||
372 | if (0 <= scmp (dp->d_name + skip, | |
373 | XSTRING (elt)->data, | |
374 | XSTRING (elt)->size)) | |
375 | continue; | |
376 | break; | |
377 | } | |
378 | } | |
379 | ||
f676868d KH |
380 | /* If an ignored-extensions match was found, |
381 | don't process this name as a completion. */ | |
382 | if (!passcount && CONSP (tem)) | |
383 | continue; | |
384 | ||
385 | if (!passcount) | |
14d55bce | 386 | { |
f676868d KH |
387 | Lisp_Object regexps; |
388 | Lisp_Object zero; | |
617b3bfe | 389 | XSETFASTINT (zero, 0); |
f676868d KH |
390 | |
391 | /* Ignore this element if it fails to match all the regexps. */ | |
392 | for (regexps = Vcompletion_regexp_list; CONSP (regexps); | |
393 | regexps = XCONS (regexps)->cdr) | |
394 | { | |
395 | tem = Fstring_match (XCONS (regexps)->car, elt, zero); | |
396 | if (NILP (tem)) | |
397 | break; | |
398 | } | |
399 | if (CONSP (regexps)) | |
400 | continue; | |
401 | } | |
14d55bce | 402 | |
f676868d | 403 | /* Update computation of how much all possible completions match */ |
14d55bce | 404 | |
f676868d KH |
405 | matchcount++; |
406 | ||
407 | if (all_flag || NILP (bestmatch)) | |
408 | { | |
409 | /* This is a possible completion */ | |
410 | if (directoryp) | |
14d55bce | 411 | { |
f676868d KH |
412 | /* This completion is a directory; make it end with '/' */ |
413 | name = Ffile_name_as_directory (make_string (dp->d_name, len)); | |
414 | } | |
415 | else | |
416 | name = make_string (dp->d_name, len); | |
417 | if (all_flag) | |
418 | { | |
419 | bestmatch = Fcons (name, bestmatch); | |
14d55bce RS |
420 | } |
421 | else | |
422 | { | |
f676868d KH |
423 | bestmatch = name; |
424 | bestmatchsize = XSTRING (name)->size; | |
425 | } | |
426 | } | |
427 | else | |
428 | { | |
429 | compare = min (bestmatchsize, len); | |
430 | p1 = XSTRING (bestmatch)->data; | |
431 | p2 = (unsigned char *) dp->d_name; | |
432 | matchsize = scmp(p1, p2, compare); | |
433 | if (matchsize < 0) | |
434 | matchsize = compare; | |
435 | if (completion_ignore_case) | |
436 | { | |
437 | /* If this is an exact match except for case, | |
438 | use it as the best match rather than one that is not | |
439 | an exact match. This way, we get the case pattern | |
440 | of the actual match. */ | |
441 | if ((matchsize == len | |
442 | && matchsize + !!directoryp | |
443 | < XSTRING (bestmatch)->size) | |
444 | || | |
445 | /* If there is no exact match ignoring case, | |
446 | prefer a match that does not change the case | |
447 | of the input. */ | |
448 | (((matchsize == len) | |
449 | == | |
450 | (matchsize + !!directoryp | |
451 | == XSTRING (bestmatch)->size)) | |
452 | /* If there is more than one exact match aside from | |
453 | case, and one of them is exact including case, | |
454 | prefer that one. */ | |
455 | && !bcmp (p2, XSTRING (file)->data, XSTRING (file)->size) | |
456 | && bcmp (p1, XSTRING (file)->data, XSTRING (file)->size))) | |
97e98a56 | 457 | { |
f676868d KH |
458 | bestmatch = make_string (dp->d_name, len); |
459 | if (directoryp) | |
460 | bestmatch = Ffile_name_as_directory (bestmatch); | |
97e98a56 | 461 | } |
14d55bce | 462 | } |
f676868d KH |
463 | |
464 | /* If this dirname all matches, see if implicit following | |
465 | slash does too. */ | |
466 | if (directoryp | |
467 | && compare == matchsize | |
468 | && bestmatchsize > matchsize | |
469 | && p1[matchsize] == '/') | |
470 | matchsize++; | |
471 | bestmatchsize = matchsize; | |
14d55bce RS |
472 | } |
473 | } | |
474 | closedir (d); | |
475 | } | |
476 | ||
3fcc88cc RS |
477 | UNGCPRO; |
478 | bestmatch = unbind_to (count, bestmatch); | |
14d55bce | 479 | |
265a9e55 | 480 | if (all_flag || NILP (bestmatch)) |
14d55bce RS |
481 | return bestmatch; |
482 | if (matchcount == 1 && bestmatchsize == XSTRING (file)->size) | |
483 | return Qt; | |
484 | return Fsubstring (bestmatch, make_number (0), make_number (bestmatchsize)); | |
485 | quit: | |
486 | if (d) closedir (d); | |
487 | Vquit_flag = Qnil; | |
488 | return Fsignal (Qquit, Qnil); | |
489 | } | |
490 | ||
491 | file_name_completion_stat (dirname, dp, st_addr) | |
492 | Lisp_Object dirname; | |
493 | DIRENTRY *dp; | |
494 | struct stat *st_addr; | |
495 | { | |
496 | int len = NAMLEN (dp); | |
497 | int pos = XSTRING (dirname)->size; | |
7e3cf34f | 498 | int value; |
14d55bce RS |
499 | char *fullname = (char *) alloca (len + pos + 2); |
500 | ||
501 | bcopy (XSTRING (dirname)->data, fullname, pos); | |
502 | #ifndef VMS | |
503 | if (fullname[pos - 1] != '/') | |
504 | fullname[pos++] = '/'; | |
505 | #endif | |
506 | ||
507 | bcopy (dp->d_name, fullname + pos, len); | |
508 | fullname[pos + len] = 0; | |
509 | ||
a889bd0e | 510 | #ifdef S_IFLNK |
7e3cf34f RS |
511 | /* We want to return success if a link points to a nonexistent file, |
512 | but we want to return the status for what the link points to, | |
513 | in case it is a directory. */ | |
514 | value = lstat (fullname, st_addr); | |
515 | stat (fullname, st_addr); | |
516 | return value; | |
a889bd0e | 517 | #else |
14d55bce | 518 | return stat (fullname, st_addr); |
a889bd0e | 519 | #endif |
14d55bce RS |
520 | } |
521 | \f | |
3ed991aa RS |
522 | #ifdef VMS |
523 | ||
524 | DEFUN ("file-name-all-versions", Ffile_name_all_versions, | |
525 | Sfile_name_all_versions, 2, 2, 0, | |
526 | "Return a list of all versions of file name FILE in directory DIR.") | |
527 | (file, dirname) | |
528 | Lisp_Object file, dirname; | |
529 | { | |
530 | return file_name_completion (file, dirname, 1, 1); | |
531 | } | |
532 | ||
533 | DEFUN ("file-version-limit", Ffile_version_limit, Sfile_version_limit, 1, 1, 0, | |
534 | "Return the maximum number of versions allowed for FILE.\n\ | |
535 | Returns nil if the file cannot be opened or if there is no version limit.") | |
536 | (filename) | |
537 | Lisp_Object filename; | |
538 | { | |
539 | Lisp_Object retval; | |
540 | struct FAB fab; | |
541 | struct RAB rab; | |
542 | struct XABFHC xabfhc; | |
543 | int status; | |
544 | ||
545 | filename = Fexpand_file_name (filename, Qnil); | |
546 | fab = cc$rms_fab; | |
547 | xabfhc = cc$rms_xabfhc; | |
548 | fab.fab$l_fna = XSTRING (filename)->data; | |
549 | fab.fab$b_fns = strlen (fab.fab$l_fna); | |
550 | fab.fab$l_xab = (char *) &xabfhc; | |
551 | status = sys$open (&fab, 0, 0); | |
552 | if (status != RMS$_NORMAL) /* Probably non-existent file */ | |
553 | return Qnil; | |
554 | sys$close (&fab, 0, 0); | |
555 | if (xabfhc.xab$w_verlimit == 32767) | |
556 | return Qnil; /* No version limit */ | |
557 | else | |
558 | return make_number (xabfhc.xab$w_verlimit); | |
559 | } | |
560 | ||
561 | #endif /* VMS */ | |
562 | \f | |
14d55bce RS |
563 | Lisp_Object |
564 | make_time (time) | |
565 | int time; | |
566 | { | |
567 | return Fcons (make_number (time >> 16), | |
568 | Fcons (make_number (time & 0177777), Qnil)); | |
569 | } | |
570 | ||
571 | DEFUN ("file-attributes", Ffile_attributes, Sfile_attributes, 1, 1, 0, | |
572 | "Return a list of attributes of file FILENAME.\n\ | |
573 | Value is nil if specified file cannot be opened.\n\ | |
574 | Otherwise, list elements are:\n\ | |
575 | 0. t for directory, string (name linked to) for symbolic link, or nil.\n\ | |
576 | 1. Number of links to file.\n\ | |
577 | 2. File uid.\n\ | |
578 | 3. File gid.\n\ | |
579 | 4. Last access time, as a list of two integers.\n\ | |
580 | First integer has high-order 16 bits of time, second has low 16 bits.\n\ | |
581 | 5. Last modification time, likewise.\n\ | |
582 | 6. Last status change time, likewise.\n\ | |
60fc6069 | 583 | 7. Size in bytes (-1, if number is out of range).\n\ |
14d55bce RS |
584 | 8. File modes, as a string of ten letters or dashes as in ls -l.\n\ |
585 | 9. t iff file's gid would change if file were deleted and recreated.\n\ | |
586 | 10. inode number.\n\ | |
587 | 11. Device number.\n\ | |
588 | \n\ | |
ccbcf979 | 589 | If file does not exist, returns nil.") |
14d55bce RS |
590 | (filename) |
591 | Lisp_Object filename; | |
592 | { | |
593 | Lisp_Object values[12]; | |
594 | Lisp_Object dirname; | |
595 | struct stat s; | |
596 | struct stat sdir; | |
597 | char modes[10]; | |
32f4334d | 598 | Lisp_Object handler; |
14d55bce RS |
599 | |
600 | filename = Fexpand_file_name (filename, Qnil); | |
32f4334d RS |
601 | |
602 | /* If the file name has special constructs in it, | |
603 | call the corresponding file handler. */ | |
a617e913 | 604 | handler = Ffind_file_name_handler (filename, Qfile_attributes); |
32f4334d RS |
605 | if (!NILP (handler)) |
606 | return call2 (handler, Qfile_attributes, filename); | |
607 | ||
14d55bce RS |
608 | if (lstat (XSTRING (filename)->data, &s) < 0) |
609 | return Qnil; | |
610 | ||
128ecc89 RS |
611 | #ifdef MSDOS |
612 | { | |
613 | char *tmpnam = XSTRING (Ffile_name_nondirectory (filename))->data; | |
614 | int l = strlen (tmpnam); | |
615 | ||
616 | if (l >= 5 | |
617 | && S_ISREG (s.st_mode) | |
618 | && (stricmp (&tmpnam[l - 4], ".com") == 0 | |
619 | || stricmp (&tmpnam[l - 4], ".exe") == 0 | |
620 | || stricmp (&tmpnam[l - 4], ".bat") == 0)) | |
621 | { | |
622 | s.st_mode |= S_IEXEC; | |
623 | } | |
624 | } | |
625 | #endif /* MSDOS */ | |
626 | ||
14d55bce RS |
627 | switch (s.st_mode & S_IFMT) |
628 | { | |
629 | default: | |
630 | values[0] = Qnil; break; | |
631 | case S_IFDIR: | |
632 | values[0] = Qt; break; | |
633 | #ifdef S_IFLNK | |
634 | case S_IFLNK: | |
635 | values[0] = Ffile_symlink_p (filename); break; | |
636 | #endif | |
637 | } | |
638 | values[1] = make_number (s.st_nlink); | |
639 | values[2] = make_number (s.st_uid); | |
640 | values[3] = make_number (s.st_gid); | |
641 | values[4] = make_time (s.st_atime); | |
642 | values[5] = make_time (s.st_mtime); | |
643 | values[6] = make_time (s.st_ctime); | |
ed2ef6c9 | 644 | values[7] = make_number ((int) s.st_size); |
60fc6069 RS |
645 | /* If the size is out of range, give back -1. */ |
646 | if (XINT (values[7]) != s.st_size) | |
647 | XSETINT (values[7], -1); | |
14d55bce RS |
648 | filemodestring (&s, modes); |
649 | values[8] = make_string (modes, 10); | |
650 | #ifdef BSD4_3 /* Gross kludge to avoid lack of "#if defined(...)" in VMS */ | |
eb8c3be9 | 651 | #define BSD4_2 /* A new meaning to the term `backwards compatibility' */ |
14d55bce RS |
652 | #endif |
653 | #ifdef BSD4_2 /* file gid will be dir gid */ | |
654 | dirname = Ffile_name_directory (filename); | |
ccbcf979 | 655 | if (! NILP (dirname) && stat (XSTRING (dirname)->data, &sdir) == 0) |
14d55bce RS |
656 | values[9] = (sdir.st_gid != s.st_gid) ? Qt : Qnil; |
657 | else /* if we can't tell, assume worst */ | |
658 | values[9] = Qt; | |
659 | #else /* file gid will be egid */ | |
660 | values[9] = (s.st_gid != getegid ()) ? Qt : Qnil; | |
661 | #endif /* BSD4_2 (or BSD4_3) */ | |
662 | #ifdef BSD4_3 | |
663 | #undef BSD4_2 /* ok, you can look again without throwing up */ | |
664 | #endif | |
665 | values[10] = make_number (s.st_ino); | |
666 | values[11] = make_number (s.st_dev); | |
667 | return Flist (sizeof(values) / sizeof(values[0]), values); | |
668 | } | |
669 | \f | |
670 | syms_of_dired () | |
671 | { | |
32f4334d RS |
672 | Qdirectory_files = intern ("directory-files"); |
673 | Qfile_name_completion = intern ("file-name-completion"); | |
674 | Qfile_name_all_completions = intern ("file-name-all-completions"); | |
434e6714 | 675 | Qfile_attributes = intern ("file-attributes"); |
32f4334d | 676 | |
14d55bce RS |
677 | defsubr (&Sdirectory_files); |
678 | defsubr (&Sfile_name_completion); | |
679 | #ifdef VMS | |
680 | defsubr (&Sfile_name_all_versions); | |
3ed991aa | 681 | defsubr (&Sfile_version_limit); |
14d55bce RS |
682 | #endif /* VMS */ |
683 | defsubr (&Sfile_name_all_completions); | |
684 | defsubr (&Sfile_attributes); | |
685 | ||
686 | #ifdef VMS | |
687 | Qcompletion_ignore_case = intern ("completion-ignore-case"); | |
688 | staticpro (&Qcompletion_ignore_case); | |
689 | #endif /* VMS */ | |
690 | ||
691 | DEFVAR_LISP ("completion-ignored-extensions", &Vcompletion_ignored_extensions, | |
692 | "*Completion ignores filenames ending in any string in this list.\n\ | |
693 | This variable does not affect lists of possible completions,\n\ | |
694 | but does affect the commands that actually do completions."); | |
695 | Vcompletion_ignored_extensions = Qnil; | |
696 | } |