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 | |
7c938215 | 8 | the Free Software Foundation; either version 2, or (at your option) |
14d55bce RS |
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 | |
3b7ad313 EN |
18 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
19 | Boston, MA 02111-1307, USA. */ | |
14d55bce RS |
20 | |
21 | ||
3964b9a7 RS |
22 | #include <config.h> |
23 | ||
14d55bce RS |
24 | #include <stdio.h> |
25 | #include <sys/types.h> | |
26 | #include <sys/stat.h> | |
27 | ||
3ed991aa RS |
28 | #ifdef VMS |
29 | #include <string.h> | |
30 | #include <rms.h> | |
31 | #include <rmsdef.h> | |
32 | #endif | |
33 | ||
d6717cdb JB |
34 | /* The d_nameln member of a struct dirent includes the '\0' character |
35 | on some systems, but not on others. What's worse, you can't tell | |
36 | at compile-time which one it will be, since it really depends on | |
37 | the sort of system providing the filesystem you're reading from, | |
38 | not the system you are running on. Paul Eggert | |
39 | <eggert@bi.twinsun.com> says this occurs when Emacs is running on a | |
40 | SunOS 4.1.2 host, reading a directory that is remote-mounted from a | |
41 | Solaris 2.1 host and is in a native Solaris 2.1 filesystem. | |
42 | ||
43 | Since applying strlen to the name always works, we'll just do that. */ | |
44 | #define NAMLEN(p) strlen (p->d_name) | |
45 | ||
14d55bce RS |
46 | #ifdef SYSV_SYSTEM_DIR |
47 | ||
48 | #include <dirent.h> | |
49 | #define DIRENTRY struct dirent | |
14d55bce | 50 | |
128ecc89 | 51 | #else /* not SYSV_SYSTEM_DIR */ |
14d55bce RS |
52 | |
53 | #ifdef NONSYSTEM_DIR_LIBRARY | |
54 | #include "ndir.h" | |
55 | #else /* not NONSYSTEM_DIR_LIBRARY */ | |
128ecc89 RS |
56 | #ifdef MSDOS |
57 | #include <dirent.h> | |
58 | #else | |
14d55bce | 59 | #include <sys/dir.h> |
128ecc89 | 60 | #endif |
14d55bce RS |
61 | #endif /* not NONSYSTEM_DIR_LIBRARY */ |
62 | ||
128ecc89 | 63 | #ifndef MSDOS |
14d55bce | 64 | #define DIRENTRY struct direct |
14d55bce RS |
65 | |
66 | extern DIR *opendir (); | |
67 | extern struct direct *readdir (); | |
68 | ||
128ecc89 RS |
69 | #endif /* not MSDOS */ |
70 | #endif /* not SYSV_SYSTEM_DIR */ | |
71 | ||
72 | #ifdef MSDOS | |
73 | #define DIRENTRY_NONEMPTY(p) ((p)->d_name[0] != 0) | |
74 | #else | |
75 | #define DIRENTRY_NONEMPTY(p) ((p)->d_ino) | |
14d55bce RS |
76 | #endif |
77 | ||
14d55bce RS |
78 | #include "lisp.h" |
79 | #include "buffer.h" | |
80 | #include "commands.h" | |
81 | ||
82 | #include "regex.h" | |
14d55bce | 83 | |
e50c66d3 KH |
84 | /* Returns a search buffer, with a fastmap allocated and ready to go. */ |
85 | extern struct re_pattern_buffer *compile_pattern (); | |
c7e466e1 | 86 | |
14d55bce RS |
87 | #define min(a, b) ((a) < (b) ? (a) : (b)) |
88 | ||
89 | /* if system does not have symbolic links, it does not have lstat. | |
90 | In that case, use ordinary stat instead. */ | |
91 | ||
92 | #ifndef S_IFLNK | |
93 | #define lstat stat | |
94 | #endif | |
95 | ||
97e98a56 | 96 | extern int completion_ignore_case; |
f676868d | 97 | extern Lisp_Object Vcompletion_regexp_list; |
ccbcf979 | 98 | |
14d55bce | 99 | Lisp_Object Vcompletion_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\ | |
7b6540dd RS |
109 | If FULL is non-nil, return absolute file names. Otherwise return names\n\ |
110 | that are relative to the specified directory.\n\ | |
111 | If MATCH is non-nil, mention only file names that match the regexp MATCH.\n\ | |
14d55bce RS |
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.") | |
23bd240f EN |
114 | (directory, full, match, nosort) |
115 | Lisp_Object directory, full, match, nosort; | |
14d55bce RS |
116 | { |
117 | DIR *d; | |
5617588f | 118 | int dirnamelen; |
6155fae1 | 119 | Lisp_Object list, name, dirfilename; |
32f4334d | 120 | Lisp_Object handler; |
e50c66d3 | 121 | struct re_pattern_buffer *bufp; |
32f4334d RS |
122 | |
123 | /* If the file name has special constructs in it, | |
124 | call the corresponding file handler. */ | |
23bd240f | 125 | handler = Ffind_file_name_handler (directory, Qdirectory_files); |
32f4334d RS |
126 | if (!NILP (handler)) |
127 | { | |
128 | Lisp_Object args[6]; | |
129 | ||
130 | args[0] = handler; | |
131 | args[1] = Qdirectory_files; | |
23bd240f | 132 | args[2] = directory; |
32f4334d RS |
133 | args[3] = full; |
134 | args[4] = match; | |
135 | args[5] = nosort; | |
136 | return Ffuncall (6, args); | |
137 | } | |
14d55bce | 138 | |
6155fae1 JB |
139 | { |
140 | struct gcpro gcpro1, gcpro2; | |
141 | ||
142 | /* Because of file name handlers, these functions might call | |
143 | Ffuncall, and cause a GC. */ | |
144 | GCPRO1 (match); | |
23bd240f | 145 | directory = Fexpand_file_name (directory, Qnil); |
3254eb1e | 146 | UNGCPRO; |
23bd240f EN |
147 | GCPRO2 (match, directory); |
148 | dirfilename = Fdirectory_file_name (directory); | |
6155fae1 JB |
149 | UNGCPRO; |
150 | } | |
151 | ||
265a9e55 | 152 | if (!NILP (match)) |
14d55bce RS |
153 | { |
154 | CHECK_STRING (match, 3); | |
ebb9e16f JB |
155 | |
156 | /* MATCH might be a flawed regular expression. Rather than | |
8e6208c5 | 157 | catching and signaling our own errors, we just call |
ebb9e16f | 158 | compile_pattern to do the work for us. */ |
14d55bce | 159 | #ifdef VMS |
e50c66d3 | 160 | bufp = compile_pattern (match, 0, |
8a590062 | 161 | buffer_defaults.downcase_table->contents, 0); |
14d55bce | 162 | #else |
8a590062 | 163 | bufp = compile_pattern (match, 0, 0, 0); |
14d55bce RS |
164 | #endif |
165 | } | |
166 | ||
e50c66d3 | 167 | /* Now *bufp is the compiled form of MATCH; don't call anything |
6155fae1 JB |
168 | which might compile a new regexp until we're done with the loop! */ |
169 | ||
170 | /* Do this opendir after anything which might signal an error; if | |
8e6208c5 | 171 | an error is signaled while the directory stream is open, we |
6155fae1 JB |
172 | have to make sure it gets closed, and setting up an |
173 | unwind_protect to do so would be a pain. */ | |
174 | d = opendir (XSTRING (dirfilename)->data); | |
175 | if (! d) | |
23bd240f | 176 | report_file_error ("Opening directory", Fcons (directory, Qnil)); |
14d55bce RS |
177 | |
178 | list = Qnil; | |
23bd240f | 179 | dirnamelen = XSTRING (directory)->size; |
c81a9bdc | 180 | re_match_object = Qt; |
14d55bce RS |
181 | |
182 | /* Loop reading blocks */ | |
183 | while (1) | |
184 | { | |
185 | DIRENTRY *dp = readdir (d); | |
186 | int len; | |
187 | ||
188 | if (!dp) break; | |
189 | len = NAMLEN (dp); | |
128ecc89 | 190 | if (DIRENTRY_NONEMPTY (dp)) |
14d55bce | 191 | { |
265a9e55 | 192 | if (NILP (match) |
e50c66d3 | 193 | || (0 <= re_search (bufp, dp->d_name, len, 0, len, 0))) |
14d55bce | 194 | { |
265a9e55 | 195 | if (!NILP (full)) |
14d55bce | 196 | { |
5617588f RS |
197 | int afterdirindex = dirnamelen; |
198 | int total = len + dirnamelen; | |
199 | int needsep = 0; | |
200 | ||
201 | /* Decide whether we need to add a directory separator. */ | |
14d55bce | 202 | #ifndef VMS |
5617588f | 203 | if (dirnamelen == 0 |
23bd240f | 204 | || !IS_ANY_SEP (XSTRING (directory)->data[dirnamelen - 1])) |
5617588f | 205 | needsep = 1; |
14d55bce RS |
206 | #endif /* VMS */ |
207 | ||
5617588f | 208 | name = make_uninit_string (total + needsep); |
23bd240f | 209 | bcopy (XSTRING (directory)->data, XSTRING (name)->data, |
5617588f RS |
210 | dirnamelen); |
211 | if (needsep) | |
212 | XSTRING (name)->data[afterdirindex++] = DIRECTORY_SEP; | |
213 | bcopy (dp->d_name, | |
214 | XSTRING (name)->data + afterdirindex, len); | |
14d55bce RS |
215 | } |
216 | else | |
217 | name = make_string (dp->d_name, len); | |
218 | list = Fcons (name, list); | |
219 | } | |
220 | } | |
221 | } | |
222 | closedir (d); | |
265a9e55 | 223 | if (!NILP (nosort)) |
14d55bce RS |
224 | return list; |
225 | return Fsort (Fnreverse (list), Qstring_lessp); | |
226 | } | |
227 | \f | |
228 | Lisp_Object file_name_completion (); | |
229 | ||
230 | DEFUN ("file-name-completion", Ffile_name_completion, Sfile_name_completion, | |
231 | 2, 2, 0, | |
23bd240f | 232 | "Complete file name FILE in directory DIRECTORY.\n\ |
14d55bce | 233 | Returns the longest string\n\ |
7b6540dd | 234 | common to all file names in DIRECTORY that start with FILE.\n\ |
14d55bce RS |
235 | If there is only one and FILE matches it exactly, returns t.\n\ |
236 | Returns nil if DIR contains no name starting with FILE.") | |
23bd240f EN |
237 | (file, directory) |
238 | Lisp_Object file, directory; | |
14d55bce | 239 | { |
32f4334d | 240 | Lisp_Object handler; |
32f4334d | 241 | |
8436e231 | 242 | /* If the directory name has special constructs in it, |
32f4334d | 243 | call the corresponding file handler. */ |
23bd240f | 244 | handler = Ffind_file_name_handler (directory, Qfile_name_completion); |
32f4334d | 245 | if (!NILP (handler)) |
23bd240f | 246 | return call3 (handler, Qfile_name_completion, file, directory); |
32f4334d | 247 | |
8436e231 RS |
248 | /* If the file name has special constructs in it, |
249 | call the corresponding file handler. */ | |
250 | handler = Ffind_file_name_handler (file, Qfile_name_completion); | |
251 | if (!NILP (handler)) | |
23bd240f | 252 | return call3 (handler, Qfile_name_completion, file, directory); |
8436e231 | 253 | |
23bd240f | 254 | return file_name_completion (file, directory, 0, 0); |
14d55bce RS |
255 | } |
256 | ||
257 | DEFUN ("file-name-all-completions", Ffile_name_all_completions, | |
258 | Sfile_name_all_completions, 2, 2, 0, | |
23bd240f EN |
259 | "Return a list of all completions of file name FILE in directory DIRECTORY.\n\ |
260 | These are all file names in directory DIRECTORY which begin with FILE.") | |
261 | (file, directory) | |
262 | Lisp_Object file, directory; | |
14d55bce | 263 | { |
32f4334d RS |
264 | Lisp_Object handler; |
265 | ||
8436e231 | 266 | /* If the directory name has special constructs in it, |
32f4334d | 267 | call the corresponding file handler. */ |
23bd240f | 268 | handler = Ffind_file_name_handler (directory, Qfile_name_all_completions); |
32f4334d | 269 | if (!NILP (handler)) |
23bd240f | 270 | return call3 (handler, Qfile_name_all_completions, file, directory); |
32f4334d | 271 | |
8436e231 RS |
272 | /* If the file name has special constructs in it, |
273 | call the corresponding file handler. */ | |
274 | handler = Ffind_file_name_handler (file, Qfile_name_all_completions); | |
275 | if (!NILP (handler)) | |
23bd240f | 276 | return call3 (handler, Qfile_name_all_completions, file, directory); |
8436e231 | 277 | |
23bd240f | 278 | return file_name_completion (file, directory, 1, 0); |
14d55bce RS |
279 | } |
280 | ||
14d55bce RS |
281 | Lisp_Object |
282 | file_name_completion (file, dirname, all_flag, ver_flag) | |
283 | Lisp_Object file, dirname; | |
284 | int all_flag, ver_flag; | |
285 | { | |
286 | DIR *d; | |
287 | DIRENTRY *dp; | |
288 | int bestmatchsize, skip; | |
289 | register int compare, matchsize; | |
290 | unsigned char *p1, *p2; | |
291 | int matchcount = 0; | |
292 | Lisp_Object bestmatch, tem, elt, name; | |
293 | struct stat st; | |
294 | int directoryp; | |
295 | int passcount; | |
296 | int count = specpdl_ptr - specpdl; | |
3fcc88cc RS |
297 | struct gcpro gcpro1, gcpro2, gcpro3; |
298 | ||
14d55bce RS |
299 | #ifdef VMS |
300 | extern DIRENTRY * readdirver (); | |
301 | ||
302 | DIRENTRY *((* readfunc) ()); | |
303 | ||
304 | /* Filename completion on VMS ignores case, since VMS filesys does. */ | |
305 | specbind (Qcompletion_ignore_case, Qt); | |
306 | ||
307 | readfunc = readdir; | |
308 | if (ver_flag) | |
309 | readfunc = readdirver; | |
310 | file = Fupcase (file); | |
311 | #else /* not VMS */ | |
312 | CHECK_STRING (file, 0); | |
313 | #endif /* not VMS */ | |
314 | ||
128ecc89 RS |
315 | #ifdef FILE_SYSTEM_CASE |
316 | file = FILE_SYSTEM_CASE (file); | |
317 | #endif | |
14d55bce | 318 | bestmatch = Qnil; |
3fcc88cc RS |
319 | GCPRO3 (file, dirname, bestmatch); |
320 | dirname = Fexpand_file_name (dirname, Qnil); | |
14d55bce RS |
321 | |
322 | /* With passcount = 0, ignore files that end in an ignored extension. | |
323 | If nothing found then try again with passcount = 1, don't ignore them. | |
324 | If looking for all completions, start with passcount = 1, | |
325 | so always take even the ignored ones. | |
326 | ||
327 | ** It would not actually be helpful to the user to ignore any possible | |
328 | completions when making a list of them.** */ | |
329 | ||
265a9e55 | 330 | for (passcount = !!all_flag; NILP (bestmatch) && passcount < 2; passcount++) |
14d55bce RS |
331 | { |
332 | if (!(d = opendir (XSTRING (Fdirectory_file_name (dirname))->data))) | |
333 | report_file_error ("Opening directory", Fcons (dirname, Qnil)); | |
334 | ||
335 | /* Loop reading blocks */ | |
336 | /* (att3b compiler bug requires do a null comparison this way) */ | |
337 | while (1) | |
338 | { | |
339 | DIRENTRY *dp; | |
340 | int len; | |
341 | ||
342 | #ifdef VMS | |
343 | dp = (*readfunc) (d); | |
344 | #else | |
345 | dp = readdir (d); | |
346 | #endif | |
347 | if (!dp) break; | |
348 | ||
349 | len = NAMLEN (dp); | |
350 | ||
265a9e55 | 351 | if (!NILP (Vquit_flag) && NILP (Vinhibit_quit)) |
14d55bce | 352 | goto quit; |
128ecc89 | 353 | if (! DIRENTRY_NONEMPTY (dp) |
14d55bce RS |
354 | || len < XSTRING (file)->size |
355 | || 0 <= scmp (dp->d_name, XSTRING (file)->data, | |
356 | XSTRING (file)->size)) | |
357 | continue; | |
358 | ||
359 | if (file_name_completion_stat (dirname, dp, &st) < 0) | |
360 | continue; | |
361 | ||
362 | directoryp = ((st.st_mode & S_IFMT) == S_IFDIR); | |
363 | tem = Qnil; | |
ad456ad4 RS |
364 | if (directoryp) |
365 | { | |
366 | #ifndef TRIVIAL_DIRECTORY_ENTRY | |
367 | #define TRIVIAL_DIRECTORY_ENTRY(n) (!strcmp (n, ".") || !strcmp (n, "..")) | |
368 | #endif | |
369 | /* "." and ".." are never interesting as completions, but are | |
370 | actually in the way in a directory contains only one file. */ | |
371 | if (!passcount && TRIVIAL_DIRECTORY_ENTRY (dp->d_name)) | |
372 | continue; | |
373 | } | |
374 | else | |
14d55bce RS |
375 | { |
376 | /* Compare extensions-to-be-ignored against end of this file name */ | |
377 | /* if name is not an exact match against specified string */ | |
378 | if (!passcount && len > XSTRING (file)->size) | |
379 | /* and exit this for loop if a match is found */ | |
380 | for (tem = Vcompletion_ignored_extensions; | |
381 | CONSP (tem); tem = XCONS (tem)->cdr) | |
382 | { | |
383 | elt = XCONS (tem)->car; | |
88cf1852 | 384 | if (!STRINGP (elt)) continue; |
14d55bce RS |
385 | skip = len - XSTRING (elt)->size; |
386 | if (skip < 0) continue; | |
387 | ||
388 | if (0 <= scmp (dp->d_name + skip, | |
389 | XSTRING (elt)->data, | |
390 | XSTRING (elt)->size)) | |
391 | continue; | |
392 | break; | |
393 | } | |
394 | } | |
395 | ||
f676868d KH |
396 | /* If an ignored-extensions match was found, |
397 | don't process this name as a completion. */ | |
398 | if (!passcount && CONSP (tem)) | |
399 | continue; | |
400 | ||
401 | if (!passcount) | |
14d55bce | 402 | { |
f676868d KH |
403 | Lisp_Object regexps; |
404 | Lisp_Object zero; | |
617b3bfe | 405 | XSETFASTINT (zero, 0); |
f676868d KH |
406 | |
407 | /* Ignore this element if it fails to match all the regexps. */ | |
408 | for (regexps = Vcompletion_regexp_list; CONSP (regexps); | |
409 | regexps = XCONS (regexps)->cdr) | |
410 | { | |
411 | tem = Fstring_match (XCONS (regexps)->car, elt, zero); | |
412 | if (NILP (tem)) | |
413 | break; | |
414 | } | |
415 | if (CONSP (regexps)) | |
416 | continue; | |
417 | } | |
14d55bce | 418 | |
f676868d | 419 | /* Update computation of how much all possible completions match */ |
14d55bce | 420 | |
f676868d KH |
421 | matchcount++; |
422 | ||
423 | if (all_flag || NILP (bestmatch)) | |
424 | { | |
425 | /* This is a possible completion */ | |
426 | if (directoryp) | |
14d55bce | 427 | { |
f676868d KH |
428 | /* This completion is a directory; make it end with '/' */ |
429 | name = Ffile_name_as_directory (make_string (dp->d_name, len)); | |
430 | } | |
431 | else | |
432 | name = make_string (dp->d_name, len); | |
433 | if (all_flag) | |
434 | { | |
435 | bestmatch = Fcons (name, bestmatch); | |
14d55bce RS |
436 | } |
437 | else | |
438 | { | |
f676868d KH |
439 | bestmatch = name; |
440 | bestmatchsize = XSTRING (name)->size; | |
441 | } | |
442 | } | |
443 | else | |
444 | { | |
445 | compare = min (bestmatchsize, len); | |
446 | p1 = XSTRING (bestmatch)->data; | |
447 | p2 = (unsigned char *) dp->d_name; | |
448 | matchsize = scmp(p1, p2, compare); | |
449 | if (matchsize < 0) | |
450 | matchsize = compare; | |
451 | if (completion_ignore_case) | |
452 | { | |
453 | /* If this is an exact match except for case, | |
454 | use it as the best match rather than one that is not | |
455 | an exact match. This way, we get the case pattern | |
456 | of the actual match. */ | |
f5ec5d3d RS |
457 | /* This tests that the current file is an exact match |
458 | but BESTMATCH is not (it is too long). */ | |
f676868d KH |
459 | if ((matchsize == len |
460 | && matchsize + !!directoryp | |
461 | < XSTRING (bestmatch)->size) | |
462 | || | |
463 | /* If there is no exact match ignoring case, | |
464 | prefer a match that does not change the case | |
465 | of the input. */ | |
f5ec5d3d RS |
466 | /* If there is more than one exact match aside from |
467 | case, and one of them is exact including case, | |
468 | prefer that one. */ | |
469 | /* This == checks that, of current file and BESTMATCH, | |
470 | either both or neither are exact. */ | |
f676868d KH |
471 | (((matchsize == len) |
472 | == | |
473 | (matchsize + !!directoryp | |
474 | == XSTRING (bestmatch)->size)) | |
f676868d KH |
475 | && !bcmp (p2, XSTRING (file)->data, XSTRING (file)->size) |
476 | && bcmp (p1, XSTRING (file)->data, XSTRING (file)->size))) | |
97e98a56 | 477 | { |
f676868d KH |
478 | bestmatch = make_string (dp->d_name, len); |
479 | if (directoryp) | |
480 | bestmatch = Ffile_name_as_directory (bestmatch); | |
97e98a56 | 481 | } |
14d55bce | 482 | } |
f676868d KH |
483 | |
484 | /* If this dirname all matches, see if implicit following | |
485 | slash does too. */ | |
486 | if (directoryp | |
487 | && compare == matchsize | |
488 | && bestmatchsize > matchsize | |
0b39d75d | 489 | && IS_ANY_SEP (p1[matchsize])) |
f676868d KH |
490 | matchsize++; |
491 | bestmatchsize = matchsize; | |
14d55bce RS |
492 | } |
493 | } | |
494 | closedir (d); | |
495 | } | |
496 | ||
3fcc88cc RS |
497 | UNGCPRO; |
498 | bestmatch = unbind_to (count, bestmatch); | |
14d55bce | 499 | |
265a9e55 | 500 | if (all_flag || NILP (bestmatch)) |
14d55bce RS |
501 | return bestmatch; |
502 | if (matchcount == 1 && bestmatchsize == XSTRING (file)->size) | |
503 | return Qt; | |
504 | return Fsubstring (bestmatch, make_number (0), make_number (bestmatchsize)); | |
505 | quit: | |
506 | if (d) closedir (d); | |
507 | Vquit_flag = Qnil; | |
508 | return Fsignal (Qquit, Qnil); | |
509 | } | |
510 | ||
511 | file_name_completion_stat (dirname, dp, st_addr) | |
512 | Lisp_Object dirname; | |
513 | DIRENTRY *dp; | |
514 | struct stat *st_addr; | |
515 | { | |
516 | int len = NAMLEN (dp); | |
517 | int pos = XSTRING (dirname)->size; | |
7e3cf34f | 518 | int value; |
14d55bce RS |
519 | char *fullname = (char *) alloca (len + pos + 2); |
520 | ||
04924ee3 RS |
521 | #ifdef MSDOS |
522 | #if __DJGPP__ > 1 | |
523 | /* Some fields of struct stat are *very* expensive to compute on MS-DOS, | |
524 | but aren't required here. Avoid computing the following fields: | |
525 | st_inode, st_size and st_nlink for directories, and the execute bits | |
526 | in st_mode for non-directory files with non-standard extensions. */ | |
527 | ||
528 | unsigned short save_djstat_flags = _djstat_flags; | |
529 | ||
530 | _djstat_flags = _STAT_INODE | _STAT_EXEC_MAGIC | _STAT_DIRSIZE; | |
531 | #endif /* __DJGPP__ > 1 */ | |
532 | #endif /* MSDOS */ | |
533 | ||
14d55bce RS |
534 | bcopy (XSTRING (dirname)->data, fullname, pos); |
535 | #ifndef VMS | |
0b39d75d RS |
536 | if (!IS_DIRECTORY_SEP (fullname[pos - 1])) |
537 | fullname[pos++] = DIRECTORY_SEP; | |
14d55bce RS |
538 | #endif |
539 | ||
540 | bcopy (dp->d_name, fullname + pos, len); | |
541 | fullname[pos + len] = 0; | |
542 | ||
a889bd0e | 543 | #ifdef S_IFLNK |
7e3cf34f RS |
544 | /* We want to return success if a link points to a nonexistent file, |
545 | but we want to return the status for what the link points to, | |
546 | in case it is a directory. */ | |
547 | value = lstat (fullname, st_addr); | |
548 | stat (fullname, st_addr); | |
549 | return value; | |
a889bd0e | 550 | #else |
04924ee3 RS |
551 | value = stat (fullname, st_addr); |
552 | #ifdef MSDOS | |
553 | #if __DJGPP__ > 1 | |
554 | _djstat_flags = save_djstat_flags; | |
555 | #endif /* __DJGPP__ > 1 */ | |
556 | #endif /* MSDOS */ | |
557 | return value; | |
558 | #endif /* S_IFLNK */ | |
14d55bce RS |
559 | } |
560 | \f | |
3ed991aa RS |
561 | #ifdef VMS |
562 | ||
563 | DEFUN ("file-name-all-versions", Ffile_name_all_versions, | |
564 | Sfile_name_all_versions, 2, 2, 0, | |
23bd240f EN |
565 | "Return a list of all versions of file name FILE in directory DIRECTORY.") |
566 | (file, directory) | |
567 | Lisp_Object file, directory; | |
3ed991aa | 568 | { |
23bd240f | 569 | return file_name_completion (file, directory, 1, 1); |
3ed991aa RS |
570 | } |
571 | ||
572 | DEFUN ("file-version-limit", Ffile_version_limit, Sfile_version_limit, 1, 1, 0, | |
573 | "Return the maximum number of versions allowed for FILE.\n\ | |
574 | Returns nil if the file cannot be opened or if there is no version limit.") | |
575 | (filename) | |
576 | Lisp_Object filename; | |
577 | { | |
578 | Lisp_Object retval; | |
579 | struct FAB fab; | |
580 | struct RAB rab; | |
581 | struct XABFHC xabfhc; | |
582 | int status; | |
583 | ||
584 | filename = Fexpand_file_name (filename, Qnil); | |
585 | fab = cc$rms_fab; | |
586 | xabfhc = cc$rms_xabfhc; | |
587 | fab.fab$l_fna = XSTRING (filename)->data; | |
588 | fab.fab$b_fns = strlen (fab.fab$l_fna); | |
589 | fab.fab$l_xab = (char *) &xabfhc; | |
590 | status = sys$open (&fab, 0, 0); | |
591 | if (status != RMS$_NORMAL) /* Probably non-existent file */ | |
592 | return Qnil; | |
593 | sys$close (&fab, 0, 0); | |
594 | if (xabfhc.xab$w_verlimit == 32767) | |
595 | return Qnil; /* No version limit */ | |
596 | else | |
597 | return make_number (xabfhc.xab$w_verlimit); | |
598 | } | |
599 | ||
600 | #endif /* VMS */ | |
601 | \f | |
14d55bce RS |
602 | Lisp_Object |
603 | make_time (time) | |
604 | int time; | |
605 | { | |
606 | return Fcons (make_number (time >> 16), | |
607 | Fcons (make_number (time & 0177777), Qnil)); | |
608 | } | |
609 | ||
610 | DEFUN ("file-attributes", Ffile_attributes, Sfile_attributes, 1, 1, 0, | |
611 | "Return a list of attributes of file FILENAME.\n\ | |
612 | Value is nil if specified file cannot be opened.\n\ | |
613 | Otherwise, list elements are:\n\ | |
614 | 0. t for directory, string (name linked to) for symbolic link, or nil.\n\ | |
615 | 1. Number of links to file.\n\ | |
616 | 2. File uid.\n\ | |
617 | 3. File gid.\n\ | |
618 | 4. Last access time, as a list of two integers.\n\ | |
619 | First integer has high-order 16 bits of time, second has low 16 bits.\n\ | |
620 | 5. Last modification time, likewise.\n\ | |
621 | 6. Last status change time, likewise.\n\ | |
60fc6069 | 622 | 7. Size in bytes (-1, if number is out of range).\n\ |
14d55bce RS |
623 | 8. File modes, as a string of ten letters or dashes as in ls -l.\n\ |
624 | 9. t iff file's gid would change if file were deleted and recreated.\n\ | |
625 | 10. inode number.\n\ | |
626 | 11. Device number.\n\ | |
627 | \n\ | |
ccbcf979 | 628 | If file does not exist, returns nil.") |
14d55bce RS |
629 | (filename) |
630 | Lisp_Object filename; | |
631 | { | |
632 | Lisp_Object values[12]; | |
633 | Lisp_Object dirname; | |
634 | struct stat s; | |
635 | struct stat sdir; | |
636 | char modes[10]; | |
32f4334d | 637 | Lisp_Object handler; |
14d55bce RS |
638 | |
639 | filename = Fexpand_file_name (filename, Qnil); | |
32f4334d RS |
640 | |
641 | /* If the file name has special constructs in it, | |
642 | call the corresponding file handler. */ | |
a617e913 | 643 | handler = Ffind_file_name_handler (filename, Qfile_attributes); |
32f4334d RS |
644 | if (!NILP (handler)) |
645 | return call2 (handler, Qfile_attributes, filename); | |
646 | ||
14d55bce RS |
647 | if (lstat (XSTRING (filename)->data, &s) < 0) |
648 | return Qnil; | |
649 | ||
650 | switch (s.st_mode & S_IFMT) | |
651 | { | |
652 | default: | |
653 | values[0] = Qnil; break; | |
654 | case S_IFDIR: | |
655 | values[0] = Qt; break; | |
656 | #ifdef S_IFLNK | |
657 | case S_IFLNK: | |
658 | values[0] = Ffile_symlink_p (filename); break; | |
659 | #endif | |
660 | } | |
661 | values[1] = make_number (s.st_nlink); | |
662 | values[2] = make_number (s.st_uid); | |
663 | values[3] = make_number (s.st_gid); | |
664 | values[4] = make_time (s.st_atime); | |
665 | values[5] = make_time (s.st_mtime); | |
666 | values[6] = make_time (s.st_ctime); | |
ed2ef6c9 | 667 | values[7] = make_number ((int) s.st_size); |
60fc6069 RS |
668 | /* If the size is out of range, give back -1. */ |
669 | if (XINT (values[7]) != s.st_size) | |
670 | XSETINT (values[7], -1); | |
14d55bce RS |
671 | filemodestring (&s, modes); |
672 | values[8] = make_string (modes, 10); | |
673 | #ifdef BSD4_3 /* Gross kludge to avoid lack of "#if defined(...)" in VMS */ | |
eb8c3be9 | 674 | #define BSD4_2 /* A new meaning to the term `backwards compatibility' */ |
14d55bce RS |
675 | #endif |
676 | #ifdef BSD4_2 /* file gid will be dir gid */ | |
677 | dirname = Ffile_name_directory (filename); | |
ccbcf979 | 678 | if (! NILP (dirname) && stat (XSTRING (dirname)->data, &sdir) == 0) |
14d55bce RS |
679 | values[9] = (sdir.st_gid != s.st_gid) ? Qt : Qnil; |
680 | else /* if we can't tell, assume worst */ | |
681 | values[9] = Qt; | |
682 | #else /* file gid will be egid */ | |
683 | values[9] = (s.st_gid != getegid ()) ? Qt : Qnil; | |
684 | #endif /* BSD4_2 (or BSD4_3) */ | |
685 | #ifdef BSD4_3 | |
686 | #undef BSD4_2 /* ok, you can look again without throwing up */ | |
687 | #endif | |
88b09a17 RS |
688 | #if 1 |
689 | /* To allow inode numbers larger than VALBITS, separate the bottom | |
690 | 16 bits. */ | |
691 | values[10] = Fcons (make_number (s.st_ino >> 16), | |
692 | make_number (s.st_ino & 0xffff)); | |
693 | #else | |
14d55bce | 694 | values[10] = make_number (s.st_ino); |
88b09a17 | 695 | #endif |
14d55bce RS |
696 | values[11] = make_number (s.st_dev); |
697 | return Flist (sizeof(values) / sizeof(values[0]), values); | |
698 | } | |
699 | \f | |
700 | syms_of_dired () | |
701 | { | |
32f4334d RS |
702 | Qdirectory_files = intern ("directory-files"); |
703 | Qfile_name_completion = intern ("file-name-completion"); | |
704 | Qfile_name_all_completions = intern ("file-name-all-completions"); | |
434e6714 | 705 | Qfile_attributes = intern ("file-attributes"); |
32f4334d | 706 | |
a2d3836c EN |
707 | staticpro (&Qdirectory_files); |
708 | staticpro (&Qfile_name_completion); | |
709 | staticpro (&Qfile_name_all_completions); | |
710 | staticpro (&Qfile_attributes); | |
711 | ||
14d55bce RS |
712 | defsubr (&Sdirectory_files); |
713 | defsubr (&Sfile_name_completion); | |
714 | #ifdef VMS | |
715 | defsubr (&Sfile_name_all_versions); | |
3ed991aa | 716 | defsubr (&Sfile_version_limit); |
14d55bce RS |
717 | #endif /* VMS */ |
718 | defsubr (&Sfile_name_all_completions); | |
719 | defsubr (&Sfile_attributes); | |
720 | ||
721 | #ifdef VMS | |
722 | Qcompletion_ignore_case = intern ("completion-ignore-case"); | |
723 | staticpro (&Qcompletion_ignore_case); | |
724 | #endif /* VMS */ | |
725 | ||
726 | DEFVAR_LISP ("completion-ignored-extensions", &Vcompletion_ignored_extensions, | |
727 | "*Completion ignores filenames ending in any string in this list.\n\ | |
728 | This variable does not affect lists of possible completions,\n\ | |
729 | but does affect the commands that actually do completions."); | |
730 | Vcompletion_ignored_extensions = Qnil; | |
731 | } |