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14d55bce | 1 | /* Lisp functions for making directory listings. |
acaf905b | 2 | Copyright (C) 1985-1986, 1993-1994, 1999-2012 Free Software Foundation, Inc. |
14d55bce RS |
3 | |
4 | This file is part of GNU Emacs. | |
5 | ||
9ec0b715 | 6 | GNU Emacs is free software: you can redistribute it and/or modify |
14d55bce | 7 | it under the terms of the GNU General Public License as published by |
9ec0b715 GM |
8 | the Free Software Foundation, either version 3 of the License, or |
9 | (at your option) any later version. | |
14d55bce RS |
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 | |
9ec0b715 | 17 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
14d55bce RS |
18 | |
19 | ||
3964b9a7 RS |
20 | #include <config.h> |
21 | ||
14d55bce RS |
22 | #include <stdio.h> |
23 | #include <sys/types.h> | |
24 | #include <sys/stat.h> | |
25 | ||
5b9c0a1d | 26 | #ifdef HAVE_PWD_H |
6b61353c | 27 | #include <pwd.h> |
5b9c0a1d | 28 | #endif |
6b61353c | 29 | #include <grp.h> |
6b61353c | 30 | |
7cc9f69f | 31 | #include <errno.h> |
dfcf069d | 32 | #include <unistd.h> |
dfcf069d | 33 | |
14d55bce | 34 | #include <dirent.h> |
d209feed | 35 | #include <filemode.h> |
d35af63c | 36 | #include <stat-time.h> |
d209feed | 37 | |
14d55bce | 38 | #include "lisp.h" |
fa8459a3 | 39 | #include "systime.h" |
e5560ff7 | 40 | #include "character.h" |
14d55bce RS |
41 | #include "buffer.h" |
42 | #include "commands.h" | |
bd33479f KH |
43 | #include "charset.h" |
44 | #include "coding.h" | |
14d55bce | 45 | #include "regex.h" |
8c8a7c58 | 46 | #include "blockinput.h" |
14d55bce | 47 | |
955cbe7b PE |
48 | static Lisp_Object Qdirectory_files; |
49 | static Lisp_Object Qdirectory_files_and_attributes; | |
50 | static Lisp_Object Qfile_name_completion; | |
51 | static Lisp_Object Qfile_name_all_completions; | |
52 | static Lisp_Object Qfile_attributes; | |
53 | static Lisp_Object Qfile_attributes_lessp; | |
b3f04ced | 54 | |
d311d28c | 55 | static ptrdiff_t scmp (const char *, const char *, ptrdiff_t); |
14d55bce | 56 | \f |
95ef7787 PE |
57 | /* Return the number of bytes in DP's name. */ |
58 | static ptrdiff_t | |
59 | dirent_namelen (struct dirent *dp) | |
60 | { | |
61 | #ifdef _D_EXACT_NAMLEN | |
62 | return _D_EXACT_NAMLEN (dp); | |
63 | #else | |
64 | return strlen (dp->d_name); | |
65 | #endif | |
66 | } | |
67 | ||
65156807 EZ |
68 | #ifdef WINDOWSNT |
69 | Lisp_Object | |
70 | directory_files_internal_w32_unwind (Lisp_Object arg) | |
71 | { | |
72 | Vw32_get_true_file_attributes = arg; | |
73 | return Qnil; | |
74 | } | |
75 | #endif | |
2488aba5 | 76 | |
4a6bea26 | 77 | static Lisp_Object |
971de7fb | 78 | directory_files_internal_unwind (Lisp_Object dh) |
2488aba5 | 79 | { |
9d291bdf | 80 | DIR *d = (DIR *) XSAVE_VALUE (dh)->pointer; |
4d7e6e51 | 81 | block_input (); |
2488aba5 | 82 | closedir (d); |
4d7e6e51 | 83 | unblock_input (); |
2488aba5 AI |
84 | return Qnil; |
85 | } | |
86 | ||
177c0ea7 | 87 | /* Function shared by Fdirectory_files and Fdirectory_files_and_attributes. |
de1339b0 PE |
88 | If not ATTRS, return a list of directory filenames; |
89 | if ATTRS, return a list of directory filenames and their attributes. | |
6b61353c | 90 | In the latter case, ID_FORMAT is passed to Ffile_attributes. */ |
f69f9da1 | 91 | |
4424b255 | 92 | Lisp_Object |
de1339b0 PE |
93 | directory_files_internal (Lisp_Object directory, Lisp_Object full, |
94 | Lisp_Object match, Lisp_Object nosort, bool attrs, | |
95 | Lisp_Object id_format) | |
14d55bce RS |
96 | { |
97 | DIR *d; | |
d311d28c | 98 | ptrdiff_t directory_nbytes; |
388ac098 | 99 | Lisp_Object list, dirfilename, encoded_directory; |
6bbd7a29 | 100 | struct re_pattern_buffer *bufp = NULL; |
de1339b0 | 101 | bool needsep = 0; |
d311d28c | 102 | ptrdiff_t count = SPECPDL_INDEX (); |
388ac098 | 103 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5; |
95ef7787 | 104 | struct dirent *dp; |
65156807 EZ |
105 | #ifdef WINDOWSNT |
106 | Lisp_Object w32_save = Qnil; | |
107 | #endif | |
32f4334d | 108 | |
96d64004 | 109 | /* Because of file name handlers, these functions might call |
6155fae1 | 110 | Ffuncall, and cause a GC. */ |
388ac098 GM |
111 | list = encoded_directory = dirfilename = Qnil; |
112 | GCPRO5 (match, directory, list, dirfilename, encoded_directory); | |
96d64004 | 113 | dirfilename = Fdirectory_file_name (directory); |
6155fae1 | 114 | |
265a9e55 | 115 | if (!NILP (match)) |
14d55bce | 116 | { |
b7826503 | 117 | CHECK_STRING (match); |
ebb9e16f JB |
118 | |
119 | /* MATCH might be a flawed regular expression. Rather than | |
8e6208c5 | 120 | catching and signaling our own errors, we just call |
ebb9e16f | 121 | compile_pattern to do the work for us. */ |
c872c6b2 RS |
122 | /* Pass 1 for the MULTIBYTE arg |
123 | because we do make multibyte strings if the contents warrant. */ | |
1a9fbabe EZ |
124 | # ifdef WINDOWSNT |
125 | /* Windows users want case-insensitive wildcards. */ | |
126 | bufp = compile_pattern (match, 0, | |
4b4deea2 | 127 | BVAR (&buffer_defaults, case_canon_table), 0, 1); |
1a9fbabe | 128 | # else /* !WINDOWSNT */ |
3e937712 | 129 | bufp = compile_pattern (match, 0, Qnil, 0, 1); |
1a9fbabe | 130 | # endif /* !WINDOWSNT */ |
14d55bce RS |
131 | } |
132 | ||
b3edfc9b | 133 | /* Note: ENCODE_FILE and DECODE_FILE can GC because they can run |
388ac098 GM |
134 | run_pre_post_conversion_on_str which calls Lisp directly and |
135 | indirectly. */ | |
6c8b4f07 SM |
136 | if (STRING_MULTIBYTE (dirfilename)) |
137 | dirfilename = ENCODE_FILE (dirfilename); | |
138 | encoded_directory = (STRING_MULTIBYTE (directory) | |
139 | ? ENCODE_FILE (directory) : directory); | |
24c2a54f | 140 | |
e50c66d3 | 141 | /* Now *bufp is the compiled form of MATCH; don't call anything |
6155fae1 JB |
142 | which might compile a new regexp until we're done with the loop! */ |
143 | ||
4d7e6e51 | 144 | block_input (); |
42a5b22f | 145 | d = opendir (SSDATA (dirfilename)); |
4d7e6e51 | 146 | unblock_input (); |
388ac098 | 147 | if (d == NULL) |
23bd240f | 148 | report_file_error ("Opening directory", Fcons (directory, Qnil)); |
14d55bce | 149 | |
2488aba5 AI |
150 | /* Unfortunately, we can now invoke expand-file-name and |
151 | file-attributes on filenames, both of which can throw, so we must | |
152 | do a proper unwind-protect. */ | |
153 | record_unwind_protect (directory_files_internal_unwind, | |
9d291bdf | 154 | make_save_value (d, 0)); |
2488aba5 | 155 | |
65156807 EZ |
156 | #ifdef WINDOWSNT |
157 | if (attrs) | |
158 | { | |
65156807 EZ |
159 | extern int is_slow_fs (const char *); |
160 | ||
161 | /* Do this only once to avoid doing it (in w32.c:stat) for each | |
162 | file in the directory, when we call Ffile_attributes below. */ | |
163 | record_unwind_protect (directory_files_internal_w32_unwind, | |
164 | Vw32_get_true_file_attributes); | |
165 | w32_save = Vw32_get_true_file_attributes; | |
166 | if (EQ (Vw32_get_true_file_attributes, Qlocal)) | |
167 | { | |
65156807 EZ |
168 | /* w32.c:stat will notice these bindings and avoid calling |
169 | GetDriveType for each file. */ | |
b6046155 | 170 | if (is_slow_fs (SDATA (dirfilename))) |
65156807 EZ |
171 | Vw32_get_true_file_attributes = Qnil; |
172 | else | |
173 | Vw32_get_true_file_attributes = Qt; | |
174 | } | |
175 | } | |
176 | #endif | |
177 | ||
d5db4077 | 178 | directory_nbytes = SBYTES (directory); |
c81a9bdc | 179 | re_match_object = Qt; |
14d55bce | 180 | |
96d64004 | 181 | /* Decide whether we need to add a directory separator. */ |
388ac098 | 182 | if (directory_nbytes == 0 |
d5db4077 | 183 | || !IS_ANY_SEP (SREF (directory, directory_nbytes - 1))) |
96d64004 | 184 | needsep = 1; |
96d64004 | 185 | |
8e42f043 | 186 | /* Loop reading blocks until EOF or error. */ |
f69f9da1 | 187 | for (;;) |
14d55bce | 188 | { |
95ef7787 PE |
189 | ptrdiff_t len; |
190 | bool wanted = 0; | |
191 | Lisp_Object name, finalname; | |
192 | struct gcpro gcpro1, gcpro2; | |
193 | ||
f69f9da1 GM |
194 | errno = 0; |
195 | dp = readdir (d); | |
196 | ||
9d291bdf | 197 | if (dp == NULL && (0 |
f69f9da1 | 198 | #ifdef EAGAIN |
9d291bdf SM |
199 | || errno == EAGAIN |
200 | #endif | |
201 | #ifdef EINTR | |
202 | || errno == EINTR | |
f69f9da1 | 203 | #endif |
9d291bdf SM |
204 | )) |
205 | { QUIT; continue; } | |
177c0ea7 | 206 | |
f69f9da1 GM |
207 | if (dp == NULL) |
208 | break; | |
209 | ||
95ef7787 PE |
210 | len = dirent_namelen (dp); |
211 | name = finalname = make_unibyte_string (dp->d_name, len); | |
212 | GCPRO2 (finalname, name); | |
213 | ||
214 | /* Note: DECODE_FILE can GC; it should protect its argument, | |
215 | though. */ | |
216 | name = DECODE_FILE (name); | |
217 | len = SBYTES (name); | |
218 | ||
219 | /* Now that we have unwind_protect in place, we might as well | |
220 | allow matching to be interrupted. */ | |
221 | immediate_quit = 1; | |
222 | QUIT; | |
223 | ||
224 | if (NILP (match) | |
225 | || (0 <= re_search (bufp, SSDATA (name), len, 0, len, 0))) | |
226 | wanted = 1; | |
227 | ||
228 | immediate_quit = 0; | |
229 | ||
230 | if (wanted) | |
14d55bce | 231 | { |
95ef7787 PE |
232 | if (!NILP (full)) |
233 | { | |
234 | Lisp_Object fullname; | |
235 | ptrdiff_t nbytes = len + directory_nbytes + needsep; | |
236 | ptrdiff_t nchars; | |
e23f810c | 237 | |
95ef7787 PE |
238 | fullname = make_uninit_multibyte_string (nbytes, nbytes); |
239 | memcpy (SDATA (fullname), SDATA (directory), | |
240 | directory_nbytes); | |
177c0ea7 | 241 | |
95ef7787 PE |
242 | if (needsep) |
243 | SSET (fullname, directory_nbytes, DIRECTORY_SEP); | |
e23f810c | 244 | |
95ef7787 PE |
245 | memcpy (SDATA (fullname) + directory_nbytes + needsep, |
246 | SDATA (name), len); | |
2488aba5 | 247 | |
95ef7787 | 248 | nchars = chars_in_text (SDATA (fullname), nbytes); |
2488aba5 | 249 | |
95ef7787 PE |
250 | /* Some bug somewhere. */ |
251 | if (nchars > nbytes) | |
252 | emacs_abort (); | |
2488aba5 | 253 | |
95ef7787 PE |
254 | STRING_SET_CHARS (fullname, nchars); |
255 | if (nchars == nbytes) | |
256 | STRING_SET_UNIBYTE (fullname); | |
257 | ||
258 | finalname = fullname; | |
14d55bce | 259 | } |
95ef7787 PE |
260 | else |
261 | finalname = name; | |
388ac098 | 262 | |
95ef7787 PE |
263 | if (attrs) |
264 | { | |
265 | /* Construct an expanded filename for the directory entry. | |
266 | Use the decoded names for input to Ffile_attributes. */ | |
267 | Lisp_Object decoded_fullname, fileattrs; | |
268 | struct gcpro gcpro1, gcpro2; | |
269 | ||
270 | decoded_fullname = fileattrs = Qnil; | |
271 | GCPRO2 (decoded_fullname, fileattrs); | |
272 | ||
273 | /* Both Fexpand_file_name and Ffile_attributes can GC. */ | |
274 | decoded_fullname = Fexpand_file_name (name, directory); | |
275 | fileattrs = Ffile_attributes (decoded_fullname, id_format); | |
276 | ||
277 | list = Fcons (Fcons (finalname, fileattrs), list); | |
278 | UNGCPRO; | |
279 | } | |
280 | else | |
281 | list = Fcons (finalname, list); | |
14d55bce | 282 | } |
95ef7787 PE |
283 | |
284 | UNGCPRO; | |
14d55bce | 285 | } |
2488aba5 | 286 | |
4d7e6e51 | 287 | block_input (); |
14d55bce | 288 | closedir (d); |
4d7e6e51 | 289 | unblock_input (); |
65156807 EZ |
290 | #ifdef WINDOWSNT |
291 | if (attrs) | |
292 | Vw32_get_true_file_attributes = w32_save; | |
293 | #endif | |
2488aba5 AI |
294 | |
295 | /* Discard the unwind protect. */ | |
296 | specpdl_ptr = specpdl + count; | |
297 | ||
388ac098 GM |
298 | if (NILP (nosort)) |
299 | list = Fsort (Fnreverse (list), | |
300 | attrs ? Qfile_attributes_lessp : Qstring_lessp); | |
177c0ea7 | 301 | |
388ac098 | 302 | RETURN_UNGCPRO (list); |
14d55bce | 303 | } |
4424b255 GV |
304 | |
305 | ||
306 | DEFUN ("directory-files", Fdirectory_files, Sdirectory_files, 1, 4, 0, | |
335c5470 PJ |
307 | doc: /* Return a list of names of files in DIRECTORY. |
308 | There are three optional arguments: | |
309 | If FULL is non-nil, return absolute file names. Otherwise return names | |
310 | that are relative to the specified directory. | |
311 | If MATCH is non-nil, mention only file names that match the regexp MATCH. | |
312 | If NOSORT is non-nil, the list is not sorted--its order is unpredictable. | |
a489517b JB |
313 | Otherwise, the list returned is sorted with `string-lessp'. |
314 | NOSORT is useful if you plan to sort the result yourself. */) | |
5842a27b | 315 | (Lisp_Object directory, Lisp_Object full, Lisp_Object match, Lisp_Object nosort) |
4424b255 GV |
316 | { |
317 | Lisp_Object handler; | |
4ece81a6 | 318 | directory = Fexpand_file_name (directory, Qnil); |
4424b255 GV |
319 | |
320 | /* If the file name has special constructs in it, | |
321 | call the corresponding file handler. */ | |
322 | handler = Ffind_file_name_handler (directory, Qdirectory_files); | |
323 | if (!NILP (handler)) | |
6b61353c KH |
324 | return call5 (handler, Qdirectory_files, directory, |
325 | full, match, nosort); | |
4424b255 | 326 | |
6b61353c | 327 | return directory_files_internal (directory, full, match, nosort, 0, Qnil); |
4424b255 GV |
328 | } |
329 | ||
335c5470 | 330 | DEFUN ("directory-files-and-attributes", Fdirectory_files_and_attributes, |
6b61353c | 331 | Sdirectory_files_and_attributes, 1, 5, 0, |
335c5470 | 332 | doc: /* Return a list of names of files and their attributes in DIRECTORY. |
6b61353c | 333 | There are four optional arguments: |
335c5470 PJ |
334 | If FULL is non-nil, return absolute file names. Otherwise return names |
335 | that are relative to the specified directory. | |
336 | If MATCH is non-nil, mention only file names that match the regexp MATCH. | |
337 | If NOSORT is non-nil, the list is not sorted--its order is unpredictable. | |
6b61353c KH |
338 | NOSORT is useful if you plan to sort the result yourself. |
339 | ID-FORMAT specifies the preferred format of attributes uid and gid, see | |
6c5665e9 EZ |
340 | `file-attributes' for further documentation. |
341 | On MS-Windows, performance depends on `w32-get-true-file-attributes', | |
342 | which see. */) | |
5842a27b | 343 | (Lisp_Object directory, Lisp_Object full, Lisp_Object match, Lisp_Object nosort, Lisp_Object id_format) |
4424b255 GV |
344 | { |
345 | Lisp_Object handler; | |
4ece81a6 | 346 | directory = Fexpand_file_name (directory, Qnil); |
4424b255 GV |
347 | |
348 | /* If the file name has special constructs in it, | |
349 | call the corresponding file handler. */ | |
350 | handler = Ffind_file_name_handler (directory, Qdirectory_files_and_attributes); | |
351 | if (!NILP (handler)) | |
6b61353c KH |
352 | return call6 (handler, Qdirectory_files_and_attributes, |
353 | directory, full, match, nosort, id_format); | |
4424b255 | 354 | |
6b61353c | 355 | return directory_files_internal (directory, full, match, nosort, 1, id_format); |
4424b255 GV |
356 | } |
357 | ||
14d55bce | 358 | \f |
de1339b0 PE |
359 | static Lisp_Object file_name_completion (Lisp_Object, Lisp_Object, bool, |
360 | Lisp_Object); | |
14d55bce RS |
361 | |
362 | DEFUN ("file-name-completion", Ffile_name_completion, Sfile_name_completion, | |
abfb1932 | 363 | 2, 3, 0, |
335c5470 PJ |
364 | doc: /* Complete file name FILE in directory DIRECTORY. |
365 | Returns the longest string | |
366 | common to all file names in DIRECTORY that start with FILE. | |
367 | If there is only one and FILE matches it exactly, returns t. | |
2f60660a | 368 | Returns nil if DIRECTORY contains no name starting with FILE. |
335c5470 | 369 | |
b6ce54d6 RS |
370 | If PREDICATE is non-nil, call PREDICATE with each possible |
371 | completion (in absolute form) and ignore it if PREDICATE returns nil. | |
372 | ||
335c5470 PJ |
373 | This function ignores some of the possible completions as |
374 | determined by the variable `completion-ignored-extensions', which see. */) | |
5842a27b | 375 | (Lisp_Object file, Lisp_Object directory, Lisp_Object predicate) |
14d55bce | 376 | { |
32f4334d | 377 | Lisp_Object handler; |
32c1fffd | 378 | directory = Fexpand_file_name (directory, Qnil); |
32f4334d | 379 | |
8436e231 | 380 | /* If the directory name has special constructs in it, |
32f4334d | 381 | call the corresponding file handler. */ |
23bd240f | 382 | handler = Ffind_file_name_handler (directory, Qfile_name_completion); |
32f4334d | 383 | if (!NILP (handler)) |
abfb1932 | 384 | return call4 (handler, Qfile_name_completion, file, directory, predicate); |
32f4334d | 385 | |
8436e231 RS |
386 | /* If the file name has special constructs in it, |
387 | call the corresponding file handler. */ | |
388 | handler = Ffind_file_name_handler (file, Qfile_name_completion); | |
389 | if (!NILP (handler)) | |
abfb1932 | 390 | return call4 (handler, Qfile_name_completion, file, directory, predicate); |
8436e231 | 391 | |
de1339b0 | 392 | return file_name_completion (file, directory, 0, predicate); |
14d55bce RS |
393 | } |
394 | ||
395 | DEFUN ("file-name-all-completions", Ffile_name_all_completions, | |
335c5470 PJ |
396 | Sfile_name_all_completions, 2, 2, 0, |
397 | doc: /* Return a list of all completions of file name FILE in directory DIRECTORY. | |
398 | These are all file names in directory DIRECTORY which begin with FILE. */) | |
5842a27b | 399 | (Lisp_Object file, Lisp_Object directory) |
14d55bce | 400 | { |
32f4334d | 401 | Lisp_Object handler; |
32c1fffd | 402 | directory = Fexpand_file_name (directory, Qnil); |
32f4334d | 403 | |
8436e231 | 404 | /* If the directory name has special constructs in it, |
32f4334d | 405 | call the corresponding file handler. */ |
23bd240f | 406 | handler = Ffind_file_name_handler (directory, Qfile_name_all_completions); |
32f4334d | 407 | if (!NILP (handler)) |
23bd240f | 408 | return call3 (handler, Qfile_name_all_completions, file, directory); |
32f4334d | 409 | |
8436e231 RS |
410 | /* If the file name has special constructs in it, |
411 | call the corresponding file handler. */ | |
412 | handler = Ffind_file_name_handler (file, Qfile_name_all_completions); | |
413 | if (!NILP (handler)) | |
23bd240f | 414 | return call3 (handler, Qfile_name_all_completions, file, directory); |
8436e231 | 415 | |
de1339b0 | 416 | return file_name_completion (file, directory, 1, Qnil); |
14d55bce RS |
417 | } |
418 | ||
95ef7787 PE |
419 | static int file_name_completion_stat (Lisp_Object dirname, struct dirent *dp, |
420 | struct stat *st_addr); | |
955cbe7b | 421 | static Lisp_Object Qdefault_directory; |
dfcf069d | 422 | |
16390cd2 | 423 | static Lisp_Object |
de1339b0 PE |
424 | file_name_completion (Lisp_Object file, Lisp_Object dirname, bool all_flag, |
425 | Lisp_Object predicate) | |
14d55bce RS |
426 | { |
427 | DIR *d; | |
d311d28c | 428 | ptrdiff_t bestmatchsize = 0; |
14d55bce | 429 | int matchcount = 0; |
abfb1932 RS |
430 | /* If ALL_FLAG is 1, BESTMATCH is the list of all matches, decoded. |
431 | If ALL_FLAG is 0, BESTMATCH is either nil | |
432 | or the best match so far, not decoded. */ | |
14d55bce | 433 | Lisp_Object bestmatch, tem, elt, name; |
24c2a54f RS |
434 | Lisp_Object encoded_file; |
435 | Lisp_Object encoded_dir; | |
14d55bce | 436 | struct stat st; |
59ea14cd | 437 | bool directoryp; |
de1339b0 | 438 | /* If not INCLUDEALL, exclude files in completion-ignored-extensions as |
3271a8f5 SM |
439 | well as "." and "..". Until shown otherwise, assume we can't exclude |
440 | anything. */ | |
de1339b0 | 441 | bool includeall = 1; |
d311d28c | 442 | ptrdiff_t count = SPECPDL_INDEX (); |
24c2a54f | 443 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5; |
3fcc88cc | 444 | |
6bbd7a29 GM |
445 | elt = Qnil; |
446 | ||
b7826503 | 447 | CHECK_STRING (file); |
14d55bce | 448 | |
14d55bce | 449 | bestmatch = Qnil; |
24c2a54f RS |
450 | encoded_file = encoded_dir = Qnil; |
451 | GCPRO5 (file, dirname, bestmatch, encoded_file, encoded_dir); | |
01bb4018 | 452 | specbind (Qdefault_directory, dirname); |
14d55bce | 453 | |
24c2a54f RS |
454 | /* Do completion on the encoded file name |
455 | because the other names in the directory are (we presume) | |
456 | encoded likewise. We decode the completed string at the end. */ | |
2a54a229 SM |
457 | /* Actually, this is not quite true any more: we do most of the completion |
458 | work with decoded file names, but we still do some filtering based | |
459 | on the encoded file name. */ | |
6c8b4f07 | 460 | encoded_file = STRING_MULTIBYTE (file) ? ENCODE_FILE (file) : file; |
24c2a54f RS |
461 | |
462 | encoded_dir = ENCODE_FILE (dirname); | |
463 | ||
4d7e6e51 | 464 | block_input (); |
42a5b22f | 465 | d = opendir (SSDATA (Fdirectory_file_name (encoded_dir))); |
4d7e6e51 | 466 | unblock_input (); |
3271a8f5 SM |
467 | if (!d) |
468 | report_file_error ("Opening directory", Fcons (dirname, Qnil)); | |
14d55bce | 469 | |
3271a8f5 SM |
470 | record_unwind_protect (directory_files_internal_unwind, |
471 | make_save_value (d, 0)); | |
14d55bce | 472 | |
3271a8f5 SM |
473 | /* Loop reading blocks */ |
474 | /* (att3b compiler bug requires do a null comparison this way) */ | |
475 | while (1) | |
14d55bce | 476 | { |
95ef7787 | 477 | struct dirent *dp; |
d311d28c | 478 | ptrdiff_t len; |
de1339b0 | 479 | bool canexclude = 0; |
14d55bce | 480 | |
3271a8f5 SM |
481 | errno = 0; |
482 | dp = readdir (d); | |
483 | if (dp == NULL && (0 | |
9d291bdf | 484 | # ifdef EAGAIN |
3271a8f5 | 485 | || errno == EAGAIN |
9d291bdf SM |
486 | # endif |
487 | # ifdef EINTR | |
3271a8f5 | 488 | || errno == EINTR |
9d291bdf | 489 | # endif |
3271a8f5 SM |
490 | )) |
491 | { QUIT; continue; } | |
9d291bdf | 492 | |
3271a8f5 | 493 | if (!dp) break; |
14d55bce | 494 | |
95ef7787 | 495 | len = dirent_namelen (dp); |
14d55bce | 496 | |
3271a8f5 | 497 | QUIT; |
95ef7787 | 498 | if (len < SCHARS (encoded_file) |
4f043d0f | 499 | || 0 <= scmp (dp->d_name, SSDATA (encoded_file), |
3271a8f5 SM |
500 | SCHARS (encoded_file))) |
501 | continue; | |
14d55bce | 502 | |
3271a8f5 SM |
503 | if (file_name_completion_stat (encoded_dir, dp, &st) < 0) |
504 | continue; | |
14d55bce | 505 | |
59ea14cd | 506 | directoryp = S_ISDIR (st.st_mode) != 0; |
3271a8f5 SM |
507 | tem = Qnil; |
508 | /* If all_flag is set, always include all. | |
509 | It would not actually be helpful to the user to ignore any possible | |
510 | completions when making a list of them. */ | |
511 | if (!all_flag) | |
512 | { | |
d311d28c | 513 | ptrdiff_t skip; |
2cd298e2 | 514 | |
7519c40d | 515 | #if 0 /* FIXME: The `scmp' call compares an encoded and a decoded string. */ |
2cd298e2 SM |
516 | /* If this entry matches the current bestmatch, the only |
517 | thing it can do is increase matchcount, so don't bother | |
518 | investigating it any further. */ | |
519 | if (!completion_ignore_case | |
520 | /* The return result depends on whether it's the sole match. */ | |
521 | && matchcount > 1 | |
522 | && !includeall /* This match may allow includeall to 0. */ | |
523 | && len >= bestmatchsize | |
4f043d0f | 524 | && 0 > scmp (dp->d_name, SSDATA (bestmatch), bestmatchsize)) |
2cd298e2 | 525 | continue; |
7519c40d | 526 | #endif |
2cd298e2 | 527 | |
3271a8f5 | 528 | if (directoryp) |
ad456ad4 RS |
529 | { |
530 | #ifndef TRIVIAL_DIRECTORY_ENTRY | |
531 | #define TRIVIAL_DIRECTORY_ENTRY(n) (!strcmp (n, ".") || !strcmp (n, "..")) | |
532 | #endif | |
abfb1932 RS |
533 | /* "." and ".." are never interesting as completions, and are |
534 | actually in the way in a directory with only one file. */ | |
3271a8f5 SM |
535 | if (TRIVIAL_DIRECTORY_ENTRY (dp->d_name)) |
536 | canexclude = 1; | |
537 | else if (len > SCHARS (encoded_file)) | |
d013f29b EZ |
538 | /* Ignore directories if they match an element of |
539 | completion-ignored-extensions which ends in a slash. */ | |
540 | for (tem = Vcompletion_ignored_extensions; | |
541 | CONSP (tem); tem = XCDR (tem)) | |
542 | { | |
d311d28c | 543 | ptrdiff_t elt_len; |
4f043d0f | 544 | char *p1; |
d013f29b EZ |
545 | |
546 | elt = XCAR (tem); | |
547 | if (!STRINGP (elt)) | |
548 | continue; | |
a74aaa9d EZ |
549 | /* Need to encode ELT, since scmp compares unibyte |
550 | strings only. */ | |
551 | elt = ENCODE_FILE (elt); | |
d5db4077 | 552 | elt_len = SCHARS (elt) - 1; /* -1 for trailing / */ |
7a8d465a | 553 | if (elt_len <= 0) |
d013f29b | 554 | continue; |
4f043d0f | 555 | p1 = SSDATA (elt); |
d013f29b EZ |
556 | if (p1[elt_len] != '/') |
557 | continue; | |
558 | skip = len - elt_len; | |
559 | if (skip < 0) | |
560 | continue; | |
561 | ||
562 | if (0 <= scmp (dp->d_name + skip, p1, elt_len)) | |
563 | continue; | |
564 | break; | |
565 | } | |
ad456ad4 RS |
566 | } |
567 | else | |
3271a8f5 | 568 | { |
14d55bce RS |
569 | /* Compare extensions-to-be-ignored against end of this file name */ |
570 | /* if name is not an exact match against specified string */ | |
3271a8f5 | 571 | if (len > SCHARS (encoded_file)) |
14d55bce RS |
572 | /* and exit this for loop if a match is found */ |
573 | for (tem = Vcompletion_ignored_extensions; | |
70949dac | 574 | CONSP (tem); tem = XCDR (tem)) |
14d55bce | 575 | { |
70949dac | 576 | elt = XCAR (tem); |
88cf1852 | 577 | if (!STRINGP (elt)) continue; |
a74aaa9d EZ |
578 | /* Need to encode ELT, since scmp compares unibyte |
579 | strings only. */ | |
580 | elt = ENCODE_FILE (elt); | |
d5db4077 | 581 | skip = len - SCHARS (elt); |
14d55bce RS |
582 | if (skip < 0) continue; |
583 | ||
584 | if (0 <= scmp (dp->d_name + skip, | |
4f043d0f | 585 | SSDATA (elt), |
d5db4077 | 586 | SCHARS (elt))) |
14d55bce RS |
587 | continue; |
588 | break; | |
589 | } | |
590 | } | |
591 | ||
f676868d KH |
592 | /* If an ignored-extensions match was found, |
593 | don't process this name as a completion. */ | |
3271a8f5 SM |
594 | if (CONSP (tem)) |
595 | canexclude = 1; | |
f676868d | 596 | |
3271a8f5 SM |
597 | if (!includeall && canexclude) |
598 | /* We're not including all files and this file can be excluded. */ | |
599 | continue; | |
9c691c00 | 600 | |
3271a8f5 SM |
601 | if (includeall && !canexclude) |
602 | { /* If we have one non-excludable file, we want to exclude the | |
4c36be58 | 603 | excludable files. */ |
3271a8f5 SM |
604 | includeall = 0; |
605 | /* Throw away any previous excludable match found. */ | |
606 | bestmatch = Qnil; | |
607 | bestmatchsize = 0; | |
608 | matchcount = 0; | |
f676868d | 609 | } |
3271a8f5 SM |
610 | } |
611 | /* FIXME: If we move this `decode' earlier we can eliminate | |
612 | the repeated ENCODE_FILE on Vcompletion_ignored_extensions. */ | |
613 | name = make_unibyte_string (dp->d_name, len); | |
614 | name = DECODE_FILE (name); | |
615 | ||
616 | { | |
617 | Lisp_Object regexps; | |
3271a8f5 SM |
618 | |
619 | /* Ignore this element if it fails to match all the regexps. */ | |
cc524e3b CY |
620 | if (completion_ignore_case) |
621 | { | |
622 | for (regexps = Vcompletion_regexp_list; CONSP (regexps); | |
623 | regexps = XCDR (regexps)) | |
624 | if (fast_string_match_ignore_case (XCAR (regexps), name) < 0) | |
625 | break; | |
626 | } | |
627 | else | |
628 | { | |
629 | for (regexps = Vcompletion_regexp_list; CONSP (regexps); | |
630 | regexps = XCDR (regexps)) | |
631 | if (fast_string_match (XCAR (regexps), name) < 0) | |
632 | break; | |
633 | } | |
634 | ||
3271a8f5 SM |
635 | if (CONSP (regexps)) |
636 | continue; | |
637 | } | |
638 | ||
639 | /* This is a possible completion */ | |
640 | if (directoryp) | |
641 | /* This completion is a directory; make it end with '/'. */ | |
642 | name = Ffile_name_as_directory (name); | |
643 | ||
644 | /* Test the predicate, if any. */ | |
645 | if (!NILP (predicate)) | |
646 | { | |
647 | Lisp_Object val; | |
dbf31225 | 648 | struct gcpro gcpro1; |
14d55bce | 649 | |
dbf31225 | 650 | GCPRO1 (name); |
3271a8f5 | 651 | val = call1 (predicate, name); |
dbf31225 | 652 | UNGCPRO; |
c4c52bb7 | 653 | |
3271a8f5 SM |
654 | if (NILP (val)) |
655 | continue; | |
656 | } | |
abfb1932 | 657 | |
3271a8f5 | 658 | /* Suitably record this match. */ |
14d55bce | 659 | |
d311d28c | 660 | matchcount += matchcount <= 1; |
f676868d | 661 | |
3271a8f5 SM |
662 | if (all_flag) |
663 | bestmatch = Fcons (name, bestmatch); | |
664 | else if (NILP (bestmatch)) | |
665 | { | |
666 | bestmatch = name; | |
667 | bestmatchsize = SCHARS (name); | |
668 | } | |
669 | else | |
670 | { | |
671 | Lisp_Object zero = make_number (0); | |
672 | /* FIXME: This is a copy of the code in Ftry_completion. */ | |
d311d28c | 673 | ptrdiff_t compare = min (bestmatchsize, SCHARS (name)); |
38b2c076 | 674 | Lisp_Object cmp |
3271a8f5 SM |
675 | = Fcompare_strings (bestmatch, zero, |
676 | make_number (compare), | |
677 | name, zero, | |
678 | make_number (compare), | |
679 | completion_ignore_case ? Qt : Qnil); | |
d311d28c | 680 | ptrdiff_t matchsize |
38b2c076 PE |
681 | = (EQ (cmp, Qt) ? compare |
682 | : XINT (cmp) < 0 ? - XINT (cmp) - 1 | |
683 | : XINT (cmp) - 1); | |
3271a8f5 SM |
684 | |
685 | if (completion_ignore_case) | |
f676868d | 686 | { |
3271a8f5 SM |
687 | /* If this is an exact match except for case, |
688 | use it as the best match rather than one that is not | |
689 | an exact match. This way, we get the case pattern | |
690 | of the actual match. */ | |
691 | /* This tests that the current file is an exact match | |
692 | but BESTMATCH is not (it is too long). */ | |
693 | if ((matchsize == SCHARS (name) | |
59ea14cd | 694 | && matchsize + directoryp < SCHARS (bestmatch)) |
3271a8f5 SM |
695 | || |
696 | /* If there is no exact match ignoring case, | |
697 | prefer a match that does not change the case | |
698 | of the input. */ | |
699 | /* If there is more than one exact match aside from | |
700 | case, and one of them is exact including case, | |
701 | prefer that one. */ | |
702 | /* This == checks that, of current file and BESTMATCH, | |
703 | either both or neither are exact. */ | |
704 | (((matchsize == SCHARS (name)) | |
705 | == | |
59ea14cd | 706 | (matchsize + directoryp == SCHARS (bestmatch))) |
38b2c076 | 707 | && (cmp = Fcompare_strings (name, zero, |
3271a8f5 SM |
708 | make_number (SCHARS (file)), |
709 | file, zero, | |
710 | Qnil, | |
711 | Qnil), | |
38b2c076 PE |
712 | EQ (Qt, cmp)) |
713 | && (cmp = Fcompare_strings (bestmatch, zero, | |
3271a8f5 SM |
714 | make_number (SCHARS (file)), |
715 | file, zero, | |
716 | Qnil, | |
717 | Qnil), | |
38b2c076 | 718 | ! EQ (Qt, cmp)))) |
3271a8f5 | 719 | bestmatch = name; |
14d55bce | 720 | } |
3271a8f5 | 721 | bestmatchsize = matchsize; |
2cd298e2 SM |
722 | |
723 | /* If the best completion so far is reduced to the string | |
724 | we're trying to complete, then we already know there's no | |
725 | other completion, so there's no point looking any further. */ | |
726 | if (matchsize <= SCHARS (file) | |
727 | && !includeall /* A future match may allow includeall to 0. */ | |
728 | /* If completion-ignore-case is non-nil, don't | |
729 | short-circuit because we want to find the best | |
730 | possible match *including* case differences. */ | |
731 | && (!completion_ignore_case || matchsize == 0) | |
732 | /* The return value depends on whether it's the sole match. */ | |
733 | && matchcount > 1) | |
734 | break; | |
735 | ||
14d55bce | 736 | } |
14d55bce RS |
737 | } |
738 | ||
3fcc88cc | 739 | UNGCPRO; |
3271a8f5 | 740 | /* This closes the directory. */ |
c3a3229c | 741 | bestmatch = unbind_to (count, bestmatch); |
14d55bce | 742 | |
265a9e55 | 743 | if (all_flag || NILP (bestmatch)) |
2a54a229 | 744 | return bestmatch; |
928b5acc SM |
745 | /* Return t if the supplied string is an exact match (counting case); |
746 | it does not require any change to be made. */ | |
747 | if (matchcount == 1 && !NILP (Fequal (bestmatch, file))) | |
14d55bce | 748 | return Qt; |
24c2a54f RS |
749 | bestmatch = Fsubstring (bestmatch, make_number (0), |
750 | make_number (bestmatchsize)); | |
24c2a54f | 751 | return bestmatch; |
14d55bce RS |
752 | } |
753 | ||
b3f04ced RS |
754 | /* Compare exactly LEN chars of strings at S1 and S2, |
755 | ignoring case if appropriate. | |
756 | Return -1 if strings match, | |
757 | else number of chars that match at the beginning. */ | |
758 | ||
d311d28c PE |
759 | static ptrdiff_t |
760 | scmp (const char *s1, const char *s2, ptrdiff_t len) | |
b3f04ced | 761 | { |
d311d28c | 762 | register ptrdiff_t l = len; |
b3f04ced RS |
763 | |
764 | if (completion_ignore_case) | |
765 | { | |
4f043d0f | 766 | while (l |
5da9919f PE |
767 | && (downcase ((unsigned char) *s1++) |
768 | == downcase ((unsigned char) *s2++))) | |
b3f04ced RS |
769 | l--; |
770 | } | |
771 | else | |
772 | { | |
773 | while (l && *s1++ == *s2++) | |
774 | l--; | |
775 | } | |
776 | if (l == 0) | |
777 | return -1; | |
778 | else | |
779 | return len - l; | |
780 | } | |
781 | ||
dfcf069d | 782 | static int |
95ef7787 PE |
783 | file_name_completion_stat (Lisp_Object dirname, struct dirent *dp, |
784 | struct stat *st_addr) | |
14d55bce | 785 | { |
95ef7787 | 786 | ptrdiff_t len = dirent_namelen (dp); |
d311d28c | 787 | ptrdiff_t pos = SCHARS (dirname); |
7e3cf34f | 788 | int value; |
d311d28c | 789 | USE_SAFE_ALLOCA; |
98c6f1e3 | 790 | char *fullname = SAFE_ALLOCA (len + pos + 2); |
14d55bce | 791 | |
04924ee3 | 792 | #ifdef MSDOS |
04924ee3 RS |
793 | /* Some fields of struct stat are *very* expensive to compute on MS-DOS, |
794 | but aren't required here. Avoid computing the following fields: | |
795 | st_inode, st_size and st_nlink for directories, and the execute bits | |
796 | in st_mode for non-directory files with non-standard extensions. */ | |
797 | ||
798 | unsigned short save_djstat_flags = _djstat_flags; | |
799 | ||
800 | _djstat_flags = _STAT_INODE | _STAT_EXEC_MAGIC | _STAT_DIRSIZE; | |
04924ee3 RS |
801 | #endif /* MSDOS */ |
802 | ||
72af86bd | 803 | memcpy (fullname, SDATA (dirname), pos); |
0b39d75d RS |
804 | if (!IS_DIRECTORY_SEP (fullname[pos - 1])) |
805 | fullname[pos++] = DIRECTORY_SEP; | |
14d55bce | 806 | |
72af86bd | 807 | memcpy (fullname + pos, dp->d_name, len); |
14d55bce RS |
808 | fullname[pos + len] = 0; |
809 | ||
7e3cf34f RS |
810 | /* We want to return success if a link points to a nonexistent file, |
811 | but we want to return the status for what the link points to, | |
812 | in case it is a directory. */ | |
813 | value = lstat (fullname, st_addr); | |
f68c809d PE |
814 | if (value == 0 && S_ISLNK (st_addr->st_mode)) |
815 | stat (fullname, st_addr); | |
04924ee3 | 816 | #ifdef MSDOS |
04924ee3 | 817 | _djstat_flags = save_djstat_flags; |
04924ee3 | 818 | #endif /* MSDOS */ |
d311d28c | 819 | SAFE_FREE (); |
04924ee3 | 820 | return value; |
14d55bce RS |
821 | } |
822 | \f | |
8aaaec6b EZ |
823 | static char * |
824 | stat_uname (struct stat *st) | |
825 | { | |
826 | #ifdef WINDOWSNT | |
827 | return st->st_uname; | |
828 | #else | |
829 | struct passwd *pw = (struct passwd *) getpwuid (st->st_uid); | |
830 | ||
831 | if (pw) | |
832 | return pw->pw_name; | |
833 | else | |
834 | return NULL; | |
835 | #endif | |
836 | } | |
837 | ||
838 | static char * | |
839 | stat_gname (struct stat *st) | |
840 | { | |
841 | #ifdef WINDOWSNT | |
842 | return st->st_gname; | |
843 | #else | |
844 | struct group *gr = (struct group *) getgrgid (st->st_gid); | |
845 | ||
846 | if (gr) | |
847 | return gr->gr_name; | |
848 | else | |
849 | return NULL; | |
850 | #endif | |
851 | } | |
852 | ||
6b61353c | 853 | DEFUN ("file-attributes", Ffile_attributes, Sfile_attributes, 1, 2, 0, |
335c5470 PJ |
854 | doc: /* Return a list of attributes of file FILENAME. |
855 | Value is nil if specified file cannot be opened. | |
6b61353c KH |
856 | |
857 | ID-FORMAT specifies the preferred format of attributes uid and gid (see | |
e42cd1a7 JB |
858 | below) - valid values are 'string and 'integer. The latter is the |
859 | default, but we plan to change that, so you should specify a non-nil value | |
860 | for ID-FORMAT if you use the returned uid or gid. | |
6b61353c KH |
861 | |
862 | Elements of the attribute list are: | |
335c5470 PJ |
863 | 0. t for directory, string (name linked to) for symbolic link, or nil. |
864 | 1. Number of links to file. | |
78e7d1fe EZ |
865 | 2. File uid as a string or a number. If a string value cannot be |
866 | looked up, a numeric value, either an integer or a float, is returned. | |
6b61353c | 867 | 3. File gid, likewise. |
d35af63c PE |
868 | 4. Last access time, as a list of integers (HIGH LOW USEC PSEC) in the |
869 | same style as (current-time). | |
e02131a2 EZ |
870 | (See a note below about access time on FAT-based filesystems.) |
871 | 5. Last modification time, likewise. This is the time of the last | |
872 | change to the file's contents. | |
873 | 6. Last status change time, likewise. This is the time of last change | |
874 | to the file's attributes: owner and group, access mode bits, etc. | |
335c5470 PJ |
875 | 7. Size in bytes. |
876 | This is a floating point number if the size is too large for an integer. | |
877 | 8. File modes, as a string of ten letters or dashes as in ls -l. | |
e0f24100 | 878 | 9. t if file's gid would change if file were deleted and recreated. |
be44ca6c PE |
879 | 10. inode number. If it is larger than what an Emacs integer can hold, |
880 | this is of the form (HIGH . LOW): first the high bits, then the low 16 bits. | |
881 | If even HIGH is too large for an Emacs integer, this is instead of the form | |
882 | (HIGH MIDDLE . LOW): first the high bits, then the middle 24 bits, | |
e02131a2 EZ |
883 | and finally the low 16 bits. |
884 | 11. Filesystem device number. If it is larger than what the Emacs | |
885 | integer can hold, this is a cons cell, similar to the inode number. | |
886 | ||
887 | On most filesystems, the combination of the inode and the device | |
888 | number uniquely identifies the file. | |
6c5665e9 EZ |
889 | |
890 | On MS-Windows, performance depends on `w32-get-true-file-attributes', | |
21f73755 EZ |
891 | which see. |
892 | ||
893 | On some FAT-based filesystems, only the date of last access is recorded, | |
894 | so last access time will always be midnight of that day. */) | |
5842a27b | 895 | (Lisp_Object filename, Lisp_Object id_format) |
14d55bce RS |
896 | { |
897 | Lisp_Object values[12]; | |
24c2a54f | 898 | Lisp_Object encoded; |
14d55bce | 899 | struct stat s; |
98601119 | 900 | #ifdef BSD4_2 |
b3edfc9b | 901 | Lisp_Object dirname; |
14d55bce | 902 | struct stat sdir; |
98601119 | 903 | #endif /* BSD4_2 */ |
4ad89555 PE |
904 | |
905 | /* An array to hold the mode string generated by filemodestring, | |
906 | including its terminating space and null byte. */ | |
907 | char modes[sizeof "-rwxr-xr-x "]; | |
908 | ||
32f4334d | 909 | Lisp_Object handler; |
7435aef8 | 910 | struct gcpro gcpro1; |
51105b13 | 911 | char *uname = NULL, *gname = NULL; |
14d55bce RS |
912 | |
913 | filename = Fexpand_file_name (filename, Qnil); | |
32f4334d RS |
914 | |
915 | /* If the file name has special constructs in it, | |
916 | call the corresponding file handler. */ | |
a617e913 | 917 | handler = Ffind_file_name_handler (filename, Qfile_attributes); |
32f4334d | 918 | if (!NILP (handler)) |
6b61353c KH |
919 | { /* Only pass the extra arg if it is used to help backward compatibility |
920 | with old file handlers which do not implement the new arg. --Stef */ | |
921 | if (NILP (id_format)) | |
922 | return call2 (handler, Qfile_attributes, filename); | |
923 | else | |
924 | return call3 (handler, Qfile_attributes, filename, id_format); | |
925 | } | |
32f4334d | 926 | |
7435aef8 | 927 | GCPRO1 (filename); |
24c2a54f | 928 | encoded = ENCODE_FILE (filename); |
7435aef8 | 929 | UNGCPRO; |
24c2a54f | 930 | |
42a5b22f | 931 | if (lstat (SSDATA (encoded), &s) < 0) |
14d55bce RS |
932 | return Qnil; |
933 | ||
8d40723d PE |
934 | values[0] = (S_ISLNK (s.st_mode) ? Ffile_symlink_p (filename) |
935 | : S_ISDIR (s.st_mode) ? Qt : Qnil); | |
14d55bce | 936 | values[1] = make_number (s.st_nlink); |
51105b13 EZ |
937 | |
938 | if (!(NILP (id_format) || EQ (id_format, Qinteger))) | |
6b61353c | 939 | { |
4d7e6e51 | 940 | block_input (); |
8aaaec6b | 941 | uname = stat_uname (&s); |
8aaaec6b | 942 | gname = stat_gname (&s); |
4d7e6e51 | 943 | unblock_input (); |
6b61353c | 944 | } |
51105b13 | 945 | if (uname) |
80904120 | 946 | values[2] = DECODE_SYSTEM (build_string (uname)); |
51105b13 | 947 | else |
58a12889 | 948 | values[2] = make_fixnum_or_float (s.st_uid); |
51105b13 | 949 | if (gname) |
80904120 | 950 | values[3] = DECODE_SYSTEM (build_string (gname)); |
51105b13 | 951 | else |
58a12889 | 952 | values[3] = make_fixnum_or_float (s.st_gid); |
51105b13 | 953 | |
d35af63c PE |
954 | values[4] = make_lisp_time (get_stat_atime (&s)); |
955 | values[5] = make_lisp_time (get_stat_mtime (&s)); | |
956 | values[6] = make_lisp_time (get_stat_ctime (&s)); | |
83c77d31 PE |
957 | |
958 | /* If the file size is a 4-byte type, assume that files of sizes in | |
959 | the 2-4 GiB range wrap around to negative values, as this is a | |
960 | common bug on older 32-bit platforms. */ | |
961 | if (sizeof (s.st_size) == 4) | |
962 | values[7] = make_fixnum_or_float (s.st_size & 0xffffffffu); | |
963 | else | |
964 | values[7] = make_fixnum_or_float (s.st_size); | |
4bc12672 | 965 | |
14d55bce RS |
966 | filemodestring (&s, modes); |
967 | values[8] = make_string (modes, 10); | |
98601119 | 968 | #ifdef BSD4_2 /* file gid will be dir gid */ |
14d55bce | 969 | dirname = Ffile_name_directory (filename); |
24c2a54f RS |
970 | if (! NILP (dirname)) |
971 | encoded = ENCODE_FILE (dirname); | |
d5db4077 | 972 | if (! NILP (dirname) && stat (SDATA (encoded), &sdir) == 0) |
01388a3d | 973 | values[9] = (sdir.st_gid != s.st_gid) ? Qt : Qnil; |
14d55bce RS |
974 | else /* if we can't tell, assume worst */ |
975 | values[9] = Qt; | |
976 | #else /* file gid will be egid */ | |
01388a3d | 977 | values[9] = (s.st_gid != getegid ()) ? Qt : Qnil; |
98601119 | 978 | #endif /* not BSD4_2 */ |
be44ca6c PE |
979 | values[10] = INTEGER_TO_CONS (s.st_ino); |
980 | values[11] = INTEGER_TO_CONS (s.st_dev); | |
68c45bf0 | 981 | |
5e617bc2 | 982 | return Flist (sizeof (values) / sizeof (values[0]), values); |
14d55bce | 983 | } |
4424b255 GV |
984 | |
985 | DEFUN ("file-attributes-lessp", Ffile_attributes_lessp, Sfile_attributes_lessp, 2, 2, 0, | |
335c5470 PJ |
986 | doc: /* Return t if first arg file attributes list is less than second. |
987 | Comparison is in lexicographic order and case is significant. */) | |
5842a27b | 988 | (Lisp_Object f1, Lisp_Object f2) |
4424b255 GV |
989 | { |
990 | return Fstring_lessp (Fcar (f1), Fcar (f2)); | |
991 | } | |
14d55bce | 992 | \f |
316411f0 DA |
993 | |
994 | DEFUN ("system-users", Fsystem_users, Ssystem_users, 0, 0, 0, | |
995 | doc: /* Return a list of user names currently registered in the system. | |
e5a36063 GM |
996 | If we don't know how to determine that on this platform, just |
997 | return a list with one element, taken from `user-real-login-name'. */) | |
316411f0 DA |
998 | (void) |
999 | { | |
1000 | Lisp_Object users = Qnil; | |
aba027e8 | 1001 | #if defined HAVE_GETPWENT && defined HAVE_ENDPWENT |
316411f0 DA |
1002 | struct passwd *pw; |
1003 | ||
1004 | while ((pw = getpwent ())) | |
1005 | users = Fcons (DECODE_SYSTEM (build_string (pw->pw_name)), users); | |
1006 | ||
1007 | endpwent (); | |
1008 | #endif | |
1009 | if (EQ (users, Qnil)) | |
1010 | /* At least current user is always known. */ | |
1011 | users = Fcons (Vuser_real_login_name, Qnil); | |
1012 | return users; | |
1013 | } | |
1014 | ||
1015 | DEFUN ("system-groups", Fsystem_groups, Ssystem_groups, 0, 0, 0, | |
1016 | doc: /* Return a list of user group names currently registered in the system. | |
1017 | The value may be nil if not supported on this platform. */) | |
1018 | (void) | |
1019 | { | |
1020 | Lisp_Object groups = Qnil; | |
aba027e8 | 1021 | #if defined HAVE_GETGRENT && defined HAVE_ENDGRENT |
316411f0 | 1022 | struct group *gr; |
316411f0 DA |
1023 | |
1024 | while ((gr = getgrent ())) | |
1025 | groups = Fcons (DECODE_SYSTEM (build_string (gr->gr_name)), groups); | |
1026 | ||
1027 | endgrent (); | |
1028 | #endif | |
1029 | return groups; | |
1030 | } | |
1031 | ||
dfcf069d | 1032 | void |
971de7fb | 1033 | syms_of_dired (void) |
14d55bce | 1034 | { |
cd3520a4 JB |
1035 | DEFSYM (Qdirectory_files, "directory-files"); |
1036 | DEFSYM (Qdirectory_files_and_attributes, "directory-files-and-attributes"); | |
1037 | DEFSYM (Qfile_name_completion, "file-name-completion"); | |
1038 | DEFSYM (Qfile_name_all_completions, "file-name-all-completions"); | |
1039 | DEFSYM (Qfile_attributes, "file-attributes"); | |
1040 | DEFSYM (Qfile_attributes_lessp, "file-attributes-lessp"); | |
1041 | DEFSYM (Qdefault_directory, "default-directory"); | |
a2d3836c | 1042 | |
14d55bce | 1043 | defsubr (&Sdirectory_files); |
4424b255 | 1044 | defsubr (&Sdirectory_files_and_attributes); |
14d55bce | 1045 | defsubr (&Sfile_name_completion); |
14d55bce RS |
1046 | defsubr (&Sfile_name_all_completions); |
1047 | defsubr (&Sfile_attributes); | |
4424b255 | 1048 | defsubr (&Sfile_attributes_lessp); |
316411f0 DA |
1049 | defsubr (&Ssystem_users); |
1050 | defsubr (&Ssystem_groups); | |
14d55bce | 1051 | |
29208e82 | 1052 | DEFVAR_LISP ("completion-ignored-extensions", Vcompletion_ignored_extensions, |
407a52c4 LT |
1053 | doc: /* Completion ignores file names ending in any string in this list. |
1054 | It does not ignore them if all possible completions end in one of | |
1055 | these strings or when displaying a list of completions. | |
1056 | It ignores directory names if they match any string in this list which | |
1057 | ends in a slash. */); | |
14d55bce RS |
1058 | Vcompletion_ignored_extensions = Qnil; |
1059 | } |