Commit | Line | Data |
---|---|---|
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); | |
22626a85 PE |
196 | if (!dp) |
197 | { | |
198 | if (errno == EAGAIN || errno == EINTR) | |
199 | { | |
200 | QUIT; | |
201 | continue; | |
202 | } | |
203 | break; | |
204 | } | |
f69f9da1 | 205 | |
95ef7787 PE |
206 | len = dirent_namelen (dp); |
207 | name = finalname = make_unibyte_string (dp->d_name, len); | |
208 | GCPRO2 (finalname, name); | |
209 | ||
210 | /* Note: DECODE_FILE can GC; it should protect its argument, | |
211 | though. */ | |
212 | name = DECODE_FILE (name); | |
213 | len = SBYTES (name); | |
214 | ||
215 | /* Now that we have unwind_protect in place, we might as well | |
216 | allow matching to be interrupted. */ | |
217 | immediate_quit = 1; | |
218 | QUIT; | |
219 | ||
220 | if (NILP (match) | |
221 | || (0 <= re_search (bufp, SSDATA (name), len, 0, len, 0))) | |
222 | wanted = 1; | |
223 | ||
224 | immediate_quit = 0; | |
225 | ||
226 | if (wanted) | |
14d55bce | 227 | { |
95ef7787 PE |
228 | if (!NILP (full)) |
229 | { | |
230 | Lisp_Object fullname; | |
231 | ptrdiff_t nbytes = len + directory_nbytes + needsep; | |
232 | ptrdiff_t nchars; | |
e23f810c | 233 | |
95ef7787 PE |
234 | fullname = make_uninit_multibyte_string (nbytes, nbytes); |
235 | memcpy (SDATA (fullname), SDATA (directory), | |
236 | directory_nbytes); | |
177c0ea7 | 237 | |
95ef7787 PE |
238 | if (needsep) |
239 | SSET (fullname, directory_nbytes, DIRECTORY_SEP); | |
e23f810c | 240 | |
95ef7787 PE |
241 | memcpy (SDATA (fullname) + directory_nbytes + needsep, |
242 | SDATA (name), len); | |
2488aba5 | 243 | |
95ef7787 | 244 | nchars = chars_in_text (SDATA (fullname), nbytes); |
2488aba5 | 245 | |
95ef7787 PE |
246 | /* Some bug somewhere. */ |
247 | if (nchars > nbytes) | |
248 | emacs_abort (); | |
2488aba5 | 249 | |
95ef7787 PE |
250 | STRING_SET_CHARS (fullname, nchars); |
251 | if (nchars == nbytes) | |
252 | STRING_SET_UNIBYTE (fullname); | |
253 | ||
254 | finalname = fullname; | |
14d55bce | 255 | } |
95ef7787 PE |
256 | else |
257 | finalname = name; | |
388ac098 | 258 | |
95ef7787 PE |
259 | if (attrs) |
260 | { | |
261 | /* Construct an expanded filename for the directory entry. | |
262 | Use the decoded names for input to Ffile_attributes. */ | |
263 | Lisp_Object decoded_fullname, fileattrs; | |
264 | struct gcpro gcpro1, gcpro2; | |
265 | ||
266 | decoded_fullname = fileattrs = Qnil; | |
267 | GCPRO2 (decoded_fullname, fileattrs); | |
268 | ||
269 | /* Both Fexpand_file_name and Ffile_attributes can GC. */ | |
270 | decoded_fullname = Fexpand_file_name (name, directory); | |
271 | fileattrs = Ffile_attributes (decoded_fullname, id_format); | |
272 | ||
273 | list = Fcons (Fcons (finalname, fileattrs), list); | |
274 | UNGCPRO; | |
275 | } | |
276 | else | |
277 | list = Fcons (finalname, list); | |
14d55bce | 278 | } |
95ef7787 PE |
279 | |
280 | UNGCPRO; | |
14d55bce | 281 | } |
2488aba5 | 282 | |
4d7e6e51 | 283 | block_input (); |
14d55bce | 284 | closedir (d); |
4d7e6e51 | 285 | unblock_input (); |
65156807 EZ |
286 | #ifdef WINDOWSNT |
287 | if (attrs) | |
288 | Vw32_get_true_file_attributes = w32_save; | |
289 | #endif | |
2488aba5 AI |
290 | |
291 | /* Discard the unwind protect. */ | |
292 | specpdl_ptr = specpdl + count; | |
293 | ||
388ac098 GM |
294 | if (NILP (nosort)) |
295 | list = Fsort (Fnreverse (list), | |
296 | attrs ? Qfile_attributes_lessp : Qstring_lessp); | |
177c0ea7 | 297 | |
388ac098 | 298 | RETURN_UNGCPRO (list); |
14d55bce | 299 | } |
4424b255 GV |
300 | |
301 | ||
302 | DEFUN ("directory-files", Fdirectory_files, Sdirectory_files, 1, 4, 0, | |
335c5470 PJ |
303 | doc: /* Return a list of names of files in DIRECTORY. |
304 | There are three optional arguments: | |
305 | If FULL is non-nil, return absolute file names. Otherwise return names | |
306 | that are relative to the specified directory. | |
307 | If MATCH is non-nil, mention only file names that match the regexp MATCH. | |
308 | If NOSORT is non-nil, the list is not sorted--its order is unpredictable. | |
a489517b JB |
309 | Otherwise, the list returned is sorted with `string-lessp'. |
310 | NOSORT is useful if you plan to sort the result yourself. */) | |
5842a27b | 311 | (Lisp_Object directory, Lisp_Object full, Lisp_Object match, Lisp_Object nosort) |
4424b255 GV |
312 | { |
313 | Lisp_Object handler; | |
4ece81a6 | 314 | directory = Fexpand_file_name (directory, Qnil); |
4424b255 GV |
315 | |
316 | /* If the file name has special constructs in it, | |
317 | call the corresponding file handler. */ | |
318 | handler = Ffind_file_name_handler (directory, Qdirectory_files); | |
319 | if (!NILP (handler)) | |
6b61353c KH |
320 | return call5 (handler, Qdirectory_files, directory, |
321 | full, match, nosort); | |
4424b255 | 322 | |
6b61353c | 323 | return directory_files_internal (directory, full, match, nosort, 0, Qnil); |
4424b255 GV |
324 | } |
325 | ||
335c5470 | 326 | DEFUN ("directory-files-and-attributes", Fdirectory_files_and_attributes, |
6b61353c | 327 | Sdirectory_files_and_attributes, 1, 5, 0, |
335c5470 | 328 | doc: /* Return a list of names of files and their attributes in DIRECTORY. |
6b61353c | 329 | There are four optional arguments: |
335c5470 PJ |
330 | If FULL is non-nil, return absolute file names. Otherwise return names |
331 | that are relative to the specified directory. | |
332 | If MATCH is non-nil, mention only file names that match the regexp MATCH. | |
333 | If NOSORT is non-nil, the list is not sorted--its order is unpredictable. | |
6b61353c KH |
334 | NOSORT is useful if you plan to sort the result yourself. |
335 | ID-FORMAT specifies the preferred format of attributes uid and gid, see | |
6c5665e9 EZ |
336 | `file-attributes' for further documentation. |
337 | On MS-Windows, performance depends on `w32-get-true-file-attributes', | |
338 | which see. */) | |
5842a27b | 339 | (Lisp_Object directory, Lisp_Object full, Lisp_Object match, Lisp_Object nosort, Lisp_Object id_format) |
4424b255 GV |
340 | { |
341 | Lisp_Object handler; | |
4ece81a6 | 342 | directory = Fexpand_file_name (directory, Qnil); |
4424b255 GV |
343 | |
344 | /* If the file name has special constructs in it, | |
345 | call the corresponding file handler. */ | |
346 | handler = Ffind_file_name_handler (directory, Qdirectory_files_and_attributes); | |
347 | if (!NILP (handler)) | |
6b61353c KH |
348 | return call6 (handler, Qdirectory_files_and_attributes, |
349 | directory, full, match, nosort, id_format); | |
4424b255 | 350 | |
6b61353c | 351 | return directory_files_internal (directory, full, match, nosort, 1, id_format); |
4424b255 GV |
352 | } |
353 | ||
14d55bce | 354 | \f |
de1339b0 PE |
355 | static Lisp_Object file_name_completion (Lisp_Object, Lisp_Object, bool, |
356 | Lisp_Object); | |
14d55bce RS |
357 | |
358 | DEFUN ("file-name-completion", Ffile_name_completion, Sfile_name_completion, | |
abfb1932 | 359 | 2, 3, 0, |
335c5470 PJ |
360 | doc: /* Complete file name FILE in directory DIRECTORY. |
361 | Returns the longest string | |
362 | common to all file names in DIRECTORY that start with FILE. | |
363 | If there is only one and FILE matches it exactly, returns t. | |
2f60660a | 364 | Returns nil if DIRECTORY contains no name starting with FILE. |
335c5470 | 365 | |
b6ce54d6 RS |
366 | If PREDICATE is non-nil, call PREDICATE with each possible |
367 | completion (in absolute form) and ignore it if PREDICATE returns nil. | |
368 | ||
335c5470 PJ |
369 | This function ignores some of the possible completions as |
370 | determined by the variable `completion-ignored-extensions', which see. */) | |
5842a27b | 371 | (Lisp_Object file, Lisp_Object directory, Lisp_Object predicate) |
14d55bce | 372 | { |
32f4334d | 373 | Lisp_Object handler; |
32c1fffd | 374 | directory = Fexpand_file_name (directory, Qnil); |
32f4334d | 375 | |
8436e231 | 376 | /* If the directory name has special constructs in it, |
32f4334d | 377 | call the corresponding file handler. */ |
23bd240f | 378 | handler = Ffind_file_name_handler (directory, Qfile_name_completion); |
32f4334d | 379 | if (!NILP (handler)) |
abfb1932 | 380 | return call4 (handler, Qfile_name_completion, file, directory, predicate); |
32f4334d | 381 | |
8436e231 RS |
382 | /* If the file name has special constructs in it, |
383 | call the corresponding file handler. */ | |
384 | handler = Ffind_file_name_handler (file, Qfile_name_completion); | |
385 | if (!NILP (handler)) | |
abfb1932 | 386 | return call4 (handler, Qfile_name_completion, file, directory, predicate); |
8436e231 | 387 | |
de1339b0 | 388 | return file_name_completion (file, directory, 0, predicate); |
14d55bce RS |
389 | } |
390 | ||
391 | DEFUN ("file-name-all-completions", Ffile_name_all_completions, | |
335c5470 PJ |
392 | Sfile_name_all_completions, 2, 2, 0, |
393 | doc: /* Return a list of all completions of file name FILE in directory DIRECTORY. | |
394 | These are all file names in directory DIRECTORY which begin with FILE. */) | |
5842a27b | 395 | (Lisp_Object file, Lisp_Object directory) |
14d55bce | 396 | { |
32f4334d | 397 | Lisp_Object handler; |
32c1fffd | 398 | directory = Fexpand_file_name (directory, Qnil); |
32f4334d | 399 | |
8436e231 | 400 | /* If the directory name has special constructs in it, |
32f4334d | 401 | call the corresponding file handler. */ |
23bd240f | 402 | handler = Ffind_file_name_handler (directory, Qfile_name_all_completions); |
32f4334d | 403 | if (!NILP (handler)) |
23bd240f | 404 | return call3 (handler, Qfile_name_all_completions, file, directory); |
32f4334d | 405 | |
8436e231 RS |
406 | /* If the file name has special constructs in it, |
407 | call the corresponding file handler. */ | |
408 | handler = Ffind_file_name_handler (file, Qfile_name_all_completions); | |
409 | if (!NILP (handler)) | |
23bd240f | 410 | return call3 (handler, Qfile_name_all_completions, file, directory); |
8436e231 | 411 | |
de1339b0 | 412 | return file_name_completion (file, directory, 1, Qnil); |
14d55bce RS |
413 | } |
414 | ||
95ef7787 PE |
415 | static int file_name_completion_stat (Lisp_Object dirname, struct dirent *dp, |
416 | struct stat *st_addr); | |
955cbe7b | 417 | static Lisp_Object Qdefault_directory; |
dfcf069d | 418 | |
16390cd2 | 419 | static Lisp_Object |
de1339b0 PE |
420 | file_name_completion (Lisp_Object file, Lisp_Object dirname, bool all_flag, |
421 | Lisp_Object predicate) | |
14d55bce RS |
422 | { |
423 | DIR *d; | |
d311d28c | 424 | ptrdiff_t bestmatchsize = 0; |
14d55bce | 425 | int matchcount = 0; |
abfb1932 RS |
426 | /* If ALL_FLAG is 1, BESTMATCH is the list of all matches, decoded. |
427 | If ALL_FLAG is 0, BESTMATCH is either nil | |
428 | or the best match so far, not decoded. */ | |
14d55bce | 429 | Lisp_Object bestmatch, tem, elt, name; |
24c2a54f RS |
430 | Lisp_Object encoded_file; |
431 | Lisp_Object encoded_dir; | |
14d55bce | 432 | struct stat st; |
59ea14cd | 433 | bool directoryp; |
de1339b0 | 434 | /* If not INCLUDEALL, exclude files in completion-ignored-extensions as |
3271a8f5 SM |
435 | well as "." and "..". Until shown otherwise, assume we can't exclude |
436 | anything. */ | |
de1339b0 | 437 | bool includeall = 1; |
d311d28c | 438 | ptrdiff_t count = SPECPDL_INDEX (); |
24c2a54f | 439 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5; |
3fcc88cc | 440 | |
6bbd7a29 GM |
441 | elt = Qnil; |
442 | ||
b7826503 | 443 | CHECK_STRING (file); |
14d55bce | 444 | |
14d55bce | 445 | bestmatch = Qnil; |
24c2a54f RS |
446 | encoded_file = encoded_dir = Qnil; |
447 | GCPRO5 (file, dirname, bestmatch, encoded_file, encoded_dir); | |
01bb4018 | 448 | specbind (Qdefault_directory, dirname); |
14d55bce | 449 | |
24c2a54f RS |
450 | /* Do completion on the encoded file name |
451 | because the other names in the directory are (we presume) | |
452 | encoded likewise. We decode the completed string at the end. */ | |
2a54a229 SM |
453 | /* Actually, this is not quite true any more: we do most of the completion |
454 | work with decoded file names, but we still do some filtering based | |
455 | on the encoded file name. */ | |
6c8b4f07 | 456 | encoded_file = STRING_MULTIBYTE (file) ? ENCODE_FILE (file) : file; |
24c2a54f RS |
457 | |
458 | encoded_dir = ENCODE_FILE (dirname); | |
459 | ||
4d7e6e51 | 460 | block_input (); |
42a5b22f | 461 | d = opendir (SSDATA (Fdirectory_file_name (encoded_dir))); |
4d7e6e51 | 462 | unblock_input (); |
3271a8f5 SM |
463 | if (!d) |
464 | report_file_error ("Opening directory", Fcons (dirname, Qnil)); | |
14d55bce | 465 | |
3271a8f5 SM |
466 | record_unwind_protect (directory_files_internal_unwind, |
467 | make_save_value (d, 0)); | |
14d55bce | 468 | |
3271a8f5 SM |
469 | /* Loop reading blocks */ |
470 | /* (att3b compiler bug requires do a null comparison this way) */ | |
471 | while (1) | |
14d55bce | 472 | { |
95ef7787 | 473 | struct dirent *dp; |
d311d28c | 474 | ptrdiff_t len; |
de1339b0 | 475 | bool canexclude = 0; |
14d55bce | 476 | |
3271a8f5 SM |
477 | errno = 0; |
478 | dp = readdir (d); | |
22626a85 PE |
479 | if (!dp) |
480 | { | |
481 | if (errno == EAGAIN || errno == EINTR) | |
482 | { | |
483 | QUIT; | |
484 | continue; | |
485 | } | |
486 | break; | |
487 | } | |
14d55bce | 488 | |
95ef7787 | 489 | len = dirent_namelen (dp); |
14d55bce | 490 | |
3271a8f5 | 491 | QUIT; |
95ef7787 | 492 | if (len < SCHARS (encoded_file) |
4f043d0f | 493 | || 0 <= scmp (dp->d_name, SSDATA (encoded_file), |
3271a8f5 SM |
494 | SCHARS (encoded_file))) |
495 | continue; | |
14d55bce | 496 | |
3271a8f5 SM |
497 | if (file_name_completion_stat (encoded_dir, dp, &st) < 0) |
498 | continue; | |
14d55bce | 499 | |
59ea14cd | 500 | directoryp = S_ISDIR (st.st_mode) != 0; |
3271a8f5 SM |
501 | tem = Qnil; |
502 | /* If all_flag is set, always include all. | |
503 | It would not actually be helpful to the user to ignore any possible | |
504 | completions when making a list of them. */ | |
505 | if (!all_flag) | |
506 | { | |
d311d28c | 507 | ptrdiff_t skip; |
2cd298e2 | 508 | |
7519c40d | 509 | #if 0 /* FIXME: The `scmp' call compares an encoded and a decoded string. */ |
2cd298e2 SM |
510 | /* If this entry matches the current bestmatch, the only |
511 | thing it can do is increase matchcount, so don't bother | |
512 | investigating it any further. */ | |
513 | if (!completion_ignore_case | |
514 | /* The return result depends on whether it's the sole match. */ | |
515 | && matchcount > 1 | |
516 | && !includeall /* This match may allow includeall to 0. */ | |
517 | && len >= bestmatchsize | |
4f043d0f | 518 | && 0 > scmp (dp->d_name, SSDATA (bestmatch), bestmatchsize)) |
2cd298e2 | 519 | continue; |
7519c40d | 520 | #endif |
2cd298e2 | 521 | |
3271a8f5 | 522 | if (directoryp) |
ad456ad4 RS |
523 | { |
524 | #ifndef TRIVIAL_DIRECTORY_ENTRY | |
525 | #define TRIVIAL_DIRECTORY_ENTRY(n) (!strcmp (n, ".") || !strcmp (n, "..")) | |
526 | #endif | |
abfb1932 RS |
527 | /* "." and ".." are never interesting as completions, and are |
528 | actually in the way in a directory with only one file. */ | |
3271a8f5 SM |
529 | if (TRIVIAL_DIRECTORY_ENTRY (dp->d_name)) |
530 | canexclude = 1; | |
531 | else if (len > SCHARS (encoded_file)) | |
d013f29b EZ |
532 | /* Ignore directories if they match an element of |
533 | completion-ignored-extensions which ends in a slash. */ | |
534 | for (tem = Vcompletion_ignored_extensions; | |
535 | CONSP (tem); tem = XCDR (tem)) | |
536 | { | |
d311d28c | 537 | ptrdiff_t elt_len; |
4f043d0f | 538 | char *p1; |
d013f29b EZ |
539 | |
540 | elt = XCAR (tem); | |
541 | if (!STRINGP (elt)) | |
542 | continue; | |
a74aaa9d EZ |
543 | /* Need to encode ELT, since scmp compares unibyte |
544 | strings only. */ | |
545 | elt = ENCODE_FILE (elt); | |
d5db4077 | 546 | elt_len = SCHARS (elt) - 1; /* -1 for trailing / */ |
7a8d465a | 547 | if (elt_len <= 0) |
d013f29b | 548 | continue; |
4f043d0f | 549 | p1 = SSDATA (elt); |
d013f29b EZ |
550 | if (p1[elt_len] != '/') |
551 | continue; | |
552 | skip = len - elt_len; | |
553 | if (skip < 0) | |
554 | continue; | |
555 | ||
556 | if (0 <= scmp (dp->d_name + skip, p1, elt_len)) | |
557 | continue; | |
558 | break; | |
559 | } | |
ad456ad4 RS |
560 | } |
561 | else | |
3271a8f5 | 562 | { |
14d55bce RS |
563 | /* Compare extensions-to-be-ignored against end of this file name */ |
564 | /* if name is not an exact match against specified string */ | |
3271a8f5 | 565 | if (len > SCHARS (encoded_file)) |
14d55bce RS |
566 | /* and exit this for loop if a match is found */ |
567 | for (tem = Vcompletion_ignored_extensions; | |
70949dac | 568 | CONSP (tem); tem = XCDR (tem)) |
14d55bce | 569 | { |
70949dac | 570 | elt = XCAR (tem); |
88cf1852 | 571 | if (!STRINGP (elt)) continue; |
a74aaa9d EZ |
572 | /* Need to encode ELT, since scmp compares unibyte |
573 | strings only. */ | |
574 | elt = ENCODE_FILE (elt); | |
d5db4077 | 575 | skip = len - SCHARS (elt); |
14d55bce RS |
576 | if (skip < 0) continue; |
577 | ||
578 | if (0 <= scmp (dp->d_name + skip, | |
4f043d0f | 579 | SSDATA (elt), |
d5db4077 | 580 | SCHARS (elt))) |
14d55bce RS |
581 | continue; |
582 | break; | |
583 | } | |
584 | } | |
585 | ||
f676868d KH |
586 | /* If an ignored-extensions match was found, |
587 | don't process this name as a completion. */ | |
3271a8f5 SM |
588 | if (CONSP (tem)) |
589 | canexclude = 1; | |
f676868d | 590 | |
3271a8f5 SM |
591 | if (!includeall && canexclude) |
592 | /* We're not including all files and this file can be excluded. */ | |
593 | continue; | |
9c691c00 | 594 | |
3271a8f5 SM |
595 | if (includeall && !canexclude) |
596 | { /* If we have one non-excludable file, we want to exclude the | |
4c36be58 | 597 | excludable files. */ |
3271a8f5 SM |
598 | includeall = 0; |
599 | /* Throw away any previous excludable match found. */ | |
600 | bestmatch = Qnil; | |
601 | bestmatchsize = 0; | |
602 | matchcount = 0; | |
f676868d | 603 | } |
3271a8f5 SM |
604 | } |
605 | /* FIXME: If we move this `decode' earlier we can eliminate | |
606 | the repeated ENCODE_FILE on Vcompletion_ignored_extensions. */ | |
607 | name = make_unibyte_string (dp->d_name, len); | |
608 | name = DECODE_FILE (name); | |
609 | ||
610 | { | |
611 | Lisp_Object regexps; | |
3271a8f5 SM |
612 | |
613 | /* Ignore this element if it fails to match all the regexps. */ | |
cc524e3b CY |
614 | if (completion_ignore_case) |
615 | { | |
616 | for (regexps = Vcompletion_regexp_list; CONSP (regexps); | |
617 | regexps = XCDR (regexps)) | |
618 | if (fast_string_match_ignore_case (XCAR (regexps), name) < 0) | |
619 | break; | |
620 | } | |
621 | else | |
622 | { | |
623 | for (regexps = Vcompletion_regexp_list; CONSP (regexps); | |
624 | regexps = XCDR (regexps)) | |
625 | if (fast_string_match (XCAR (regexps), name) < 0) | |
626 | break; | |
627 | } | |
628 | ||
3271a8f5 SM |
629 | if (CONSP (regexps)) |
630 | continue; | |
631 | } | |
632 | ||
633 | /* This is a possible completion */ | |
634 | if (directoryp) | |
635 | /* This completion is a directory; make it end with '/'. */ | |
636 | name = Ffile_name_as_directory (name); | |
637 | ||
638 | /* Test the predicate, if any. */ | |
639 | if (!NILP (predicate)) | |
640 | { | |
641 | Lisp_Object val; | |
dbf31225 | 642 | struct gcpro gcpro1; |
14d55bce | 643 | |
dbf31225 | 644 | GCPRO1 (name); |
3271a8f5 | 645 | val = call1 (predicate, name); |
dbf31225 | 646 | UNGCPRO; |
c4c52bb7 | 647 | |
3271a8f5 SM |
648 | if (NILP (val)) |
649 | continue; | |
650 | } | |
abfb1932 | 651 | |
3271a8f5 | 652 | /* Suitably record this match. */ |
14d55bce | 653 | |
d311d28c | 654 | matchcount += matchcount <= 1; |
f676868d | 655 | |
3271a8f5 SM |
656 | if (all_flag) |
657 | bestmatch = Fcons (name, bestmatch); | |
658 | else if (NILP (bestmatch)) | |
659 | { | |
660 | bestmatch = name; | |
661 | bestmatchsize = SCHARS (name); | |
662 | } | |
663 | else | |
664 | { | |
665 | Lisp_Object zero = make_number (0); | |
666 | /* FIXME: This is a copy of the code in Ftry_completion. */ | |
d311d28c | 667 | ptrdiff_t compare = min (bestmatchsize, SCHARS (name)); |
38b2c076 | 668 | Lisp_Object cmp |
3271a8f5 SM |
669 | = Fcompare_strings (bestmatch, zero, |
670 | make_number (compare), | |
671 | name, zero, | |
672 | make_number (compare), | |
673 | completion_ignore_case ? Qt : Qnil); | |
d311d28c | 674 | ptrdiff_t matchsize |
38b2c076 PE |
675 | = (EQ (cmp, Qt) ? compare |
676 | : XINT (cmp) < 0 ? - XINT (cmp) - 1 | |
677 | : XINT (cmp) - 1); | |
3271a8f5 SM |
678 | |
679 | if (completion_ignore_case) | |
f676868d | 680 | { |
3271a8f5 SM |
681 | /* If this is an exact match except for case, |
682 | use it as the best match rather than one that is not | |
683 | an exact match. This way, we get the case pattern | |
684 | of the actual match. */ | |
685 | /* This tests that the current file is an exact match | |
686 | but BESTMATCH is not (it is too long). */ | |
687 | if ((matchsize == SCHARS (name) | |
59ea14cd | 688 | && matchsize + directoryp < SCHARS (bestmatch)) |
3271a8f5 SM |
689 | || |
690 | /* If there is no exact match ignoring case, | |
691 | prefer a match that does not change the case | |
692 | of the input. */ | |
693 | /* If there is more than one exact match aside from | |
694 | case, and one of them is exact including case, | |
695 | prefer that one. */ | |
696 | /* This == checks that, of current file and BESTMATCH, | |
697 | either both or neither are exact. */ | |
698 | (((matchsize == SCHARS (name)) | |
699 | == | |
59ea14cd | 700 | (matchsize + directoryp == SCHARS (bestmatch))) |
38b2c076 | 701 | && (cmp = Fcompare_strings (name, zero, |
3271a8f5 SM |
702 | make_number (SCHARS (file)), |
703 | file, zero, | |
704 | Qnil, | |
705 | Qnil), | |
38b2c076 PE |
706 | EQ (Qt, cmp)) |
707 | && (cmp = Fcompare_strings (bestmatch, zero, | |
3271a8f5 SM |
708 | make_number (SCHARS (file)), |
709 | file, zero, | |
710 | Qnil, | |
711 | Qnil), | |
38b2c076 | 712 | ! EQ (Qt, cmp)))) |
3271a8f5 | 713 | bestmatch = name; |
14d55bce | 714 | } |
3271a8f5 | 715 | bestmatchsize = matchsize; |
2cd298e2 SM |
716 | |
717 | /* If the best completion so far is reduced to the string | |
718 | we're trying to complete, then we already know there's no | |
719 | other completion, so there's no point looking any further. */ | |
720 | if (matchsize <= SCHARS (file) | |
721 | && !includeall /* A future match may allow includeall to 0. */ | |
722 | /* If completion-ignore-case is non-nil, don't | |
723 | short-circuit because we want to find the best | |
724 | possible match *including* case differences. */ | |
725 | && (!completion_ignore_case || matchsize == 0) | |
726 | /* The return value depends on whether it's the sole match. */ | |
727 | && matchcount > 1) | |
728 | break; | |
729 | ||
14d55bce | 730 | } |
14d55bce RS |
731 | } |
732 | ||
3fcc88cc | 733 | UNGCPRO; |
3271a8f5 | 734 | /* This closes the directory. */ |
c3a3229c | 735 | bestmatch = unbind_to (count, bestmatch); |
14d55bce | 736 | |
265a9e55 | 737 | if (all_flag || NILP (bestmatch)) |
2a54a229 | 738 | return bestmatch; |
928b5acc SM |
739 | /* Return t if the supplied string is an exact match (counting case); |
740 | it does not require any change to be made. */ | |
741 | if (matchcount == 1 && !NILP (Fequal (bestmatch, file))) | |
14d55bce | 742 | return Qt; |
24c2a54f RS |
743 | bestmatch = Fsubstring (bestmatch, make_number (0), |
744 | make_number (bestmatchsize)); | |
24c2a54f | 745 | return bestmatch; |
14d55bce RS |
746 | } |
747 | ||
b3f04ced RS |
748 | /* Compare exactly LEN chars of strings at S1 and S2, |
749 | ignoring case if appropriate. | |
750 | Return -1 if strings match, | |
751 | else number of chars that match at the beginning. */ | |
752 | ||
d311d28c PE |
753 | static ptrdiff_t |
754 | scmp (const char *s1, const char *s2, ptrdiff_t len) | |
b3f04ced | 755 | { |
d311d28c | 756 | register ptrdiff_t l = len; |
b3f04ced RS |
757 | |
758 | if (completion_ignore_case) | |
759 | { | |
4f043d0f | 760 | while (l |
5da9919f PE |
761 | && (downcase ((unsigned char) *s1++) |
762 | == downcase ((unsigned char) *s2++))) | |
b3f04ced RS |
763 | l--; |
764 | } | |
765 | else | |
766 | { | |
767 | while (l && *s1++ == *s2++) | |
768 | l--; | |
769 | } | |
770 | if (l == 0) | |
771 | return -1; | |
772 | else | |
773 | return len - l; | |
774 | } | |
775 | ||
dfcf069d | 776 | static int |
95ef7787 PE |
777 | file_name_completion_stat (Lisp_Object dirname, struct dirent *dp, |
778 | struct stat *st_addr) | |
14d55bce | 779 | { |
95ef7787 | 780 | ptrdiff_t len = dirent_namelen (dp); |
d311d28c | 781 | ptrdiff_t pos = SCHARS (dirname); |
7e3cf34f | 782 | int value; |
d311d28c | 783 | USE_SAFE_ALLOCA; |
98c6f1e3 | 784 | char *fullname = SAFE_ALLOCA (len + pos + 2); |
14d55bce | 785 | |
04924ee3 | 786 | #ifdef MSDOS |
04924ee3 RS |
787 | /* Some fields of struct stat are *very* expensive to compute on MS-DOS, |
788 | but aren't required here. Avoid computing the following fields: | |
789 | st_inode, st_size and st_nlink for directories, and the execute bits | |
790 | in st_mode for non-directory files with non-standard extensions. */ | |
791 | ||
792 | unsigned short save_djstat_flags = _djstat_flags; | |
793 | ||
794 | _djstat_flags = _STAT_INODE | _STAT_EXEC_MAGIC | _STAT_DIRSIZE; | |
04924ee3 RS |
795 | #endif /* MSDOS */ |
796 | ||
72af86bd | 797 | memcpy (fullname, SDATA (dirname), pos); |
0b39d75d RS |
798 | if (!IS_DIRECTORY_SEP (fullname[pos - 1])) |
799 | fullname[pos++] = DIRECTORY_SEP; | |
14d55bce | 800 | |
72af86bd | 801 | memcpy (fullname + pos, dp->d_name, len); |
14d55bce RS |
802 | fullname[pos + len] = 0; |
803 | ||
7e3cf34f RS |
804 | /* We want to return success if a link points to a nonexistent file, |
805 | but we want to return the status for what the link points to, | |
806 | in case it is a directory. */ | |
807 | value = lstat (fullname, st_addr); | |
f68c809d PE |
808 | if (value == 0 && S_ISLNK (st_addr->st_mode)) |
809 | stat (fullname, st_addr); | |
04924ee3 | 810 | #ifdef MSDOS |
04924ee3 | 811 | _djstat_flags = save_djstat_flags; |
04924ee3 | 812 | #endif /* MSDOS */ |
d311d28c | 813 | SAFE_FREE (); |
04924ee3 | 814 | return value; |
14d55bce RS |
815 | } |
816 | \f | |
8aaaec6b EZ |
817 | static char * |
818 | stat_uname (struct stat *st) | |
819 | { | |
820 | #ifdef WINDOWSNT | |
821 | return st->st_uname; | |
822 | #else | |
350e0088 | 823 | struct passwd *pw = getpwuid (st->st_uid); |
8aaaec6b EZ |
824 | |
825 | if (pw) | |
826 | return pw->pw_name; | |
827 | else | |
828 | return NULL; | |
829 | #endif | |
830 | } | |
831 | ||
832 | static char * | |
833 | stat_gname (struct stat *st) | |
834 | { | |
835 | #ifdef WINDOWSNT | |
836 | return st->st_gname; | |
837 | #else | |
350e0088 | 838 | struct group *gr = getgrgid (st->st_gid); |
8aaaec6b EZ |
839 | |
840 | if (gr) | |
841 | return gr->gr_name; | |
842 | else | |
843 | return NULL; | |
844 | #endif | |
845 | } | |
846 | ||
6b61353c | 847 | DEFUN ("file-attributes", Ffile_attributes, Sfile_attributes, 1, 2, 0, |
335c5470 PJ |
848 | doc: /* Return a list of attributes of file FILENAME. |
849 | Value is nil if specified file cannot be opened. | |
6b61353c KH |
850 | |
851 | ID-FORMAT specifies the preferred format of attributes uid and gid (see | |
e42cd1a7 JB |
852 | below) - valid values are 'string and 'integer. The latter is the |
853 | default, but we plan to change that, so you should specify a non-nil value | |
854 | for ID-FORMAT if you use the returned uid or gid. | |
6b61353c KH |
855 | |
856 | Elements of the attribute list are: | |
335c5470 PJ |
857 | 0. t for directory, string (name linked to) for symbolic link, or nil. |
858 | 1. Number of links to file. | |
78e7d1fe EZ |
859 | 2. File uid as a string or a number. If a string value cannot be |
860 | looked up, a numeric value, either an integer or a float, is returned. | |
6b61353c | 861 | 3. File gid, likewise. |
d35af63c PE |
862 | 4. Last access time, as a list of integers (HIGH LOW USEC PSEC) in the |
863 | same style as (current-time). | |
e02131a2 EZ |
864 | (See a note below about access time on FAT-based filesystems.) |
865 | 5. Last modification time, likewise. This is the time of the last | |
866 | change to the file's contents. | |
867 | 6. Last status change time, likewise. This is the time of last change | |
868 | to the file's attributes: owner and group, access mode bits, etc. | |
335c5470 PJ |
869 | 7. Size in bytes. |
870 | This is a floating point number if the size is too large for an integer. | |
871 | 8. File modes, as a string of ten letters or dashes as in ls -l. | |
97976f9f | 872 | 9. An unspecified value, present only for backward compatibility. |
be44ca6c PE |
873 | 10. inode number. If it is larger than what an Emacs integer can hold, |
874 | this is of the form (HIGH . LOW): first the high bits, then the low 16 bits. | |
875 | If even HIGH is too large for an Emacs integer, this is instead of the form | |
876 | (HIGH MIDDLE . LOW): first the high bits, then the middle 24 bits, | |
e02131a2 EZ |
877 | and finally the low 16 bits. |
878 | 11. Filesystem device number. If it is larger than what the Emacs | |
879 | integer can hold, this is a cons cell, similar to the inode number. | |
880 | ||
881 | On most filesystems, the combination of the inode and the device | |
882 | number uniquely identifies the file. | |
6c5665e9 EZ |
883 | |
884 | On MS-Windows, performance depends on `w32-get-true-file-attributes', | |
21f73755 EZ |
885 | which see. |
886 | ||
887 | On some FAT-based filesystems, only the date of last access is recorded, | |
888 | so last access time will always be midnight of that day. */) | |
5842a27b | 889 | (Lisp_Object filename, Lisp_Object id_format) |
14d55bce RS |
890 | { |
891 | Lisp_Object values[12]; | |
24c2a54f | 892 | Lisp_Object encoded; |
14d55bce | 893 | struct stat s; |
5c207910 | 894 | int lstat_result; |
4ad89555 PE |
895 | |
896 | /* An array to hold the mode string generated by filemodestring, | |
897 | including its terminating space and null byte. */ | |
898 | char modes[sizeof "-rwxr-xr-x "]; | |
899 | ||
32f4334d | 900 | Lisp_Object handler; |
7435aef8 | 901 | struct gcpro gcpro1; |
51105b13 | 902 | char *uname = NULL, *gname = NULL; |
14d55bce RS |
903 | |
904 | filename = Fexpand_file_name (filename, Qnil); | |
32f4334d RS |
905 | |
906 | /* If the file name has special constructs in it, | |
907 | call the corresponding file handler. */ | |
a617e913 | 908 | handler = Ffind_file_name_handler (filename, Qfile_attributes); |
32f4334d | 909 | if (!NILP (handler)) |
6b61353c KH |
910 | { /* Only pass the extra arg if it is used to help backward compatibility |
911 | with old file handlers which do not implement the new arg. --Stef */ | |
912 | if (NILP (id_format)) | |
913 | return call2 (handler, Qfile_attributes, filename); | |
914 | else | |
915 | return call3 (handler, Qfile_attributes, filename, id_format); | |
916 | } | |
32f4334d | 917 | |
7435aef8 | 918 | GCPRO1 (filename); |
24c2a54f | 919 | encoded = ENCODE_FILE (filename); |
7435aef8 | 920 | UNGCPRO; |
24c2a54f | 921 | |
5c207910 EZ |
922 | #ifdef WINDOWSNT |
923 | /* We usually don't request accurate owner and group info, because | |
924 | it can be very expensive on Windows to get that, and most callers | |
925 | of 'lstat' don't need that. But here we do want that information | |
926 | to be accurate. */ | |
927 | w32_stat_get_owner_group = 1; | |
928 | #endif | |
929 | ||
930 | lstat_result = lstat (SSDATA (encoded), &s); | |
931 | ||
932 | #ifdef WINDOWSNT | |
933 | w32_stat_get_owner_group = 0; | |
934 | #endif | |
935 | ||
936 | if (lstat_result < 0) | |
14d55bce RS |
937 | return Qnil; |
938 | ||
8d40723d PE |
939 | values[0] = (S_ISLNK (s.st_mode) ? Ffile_symlink_p (filename) |
940 | : S_ISDIR (s.st_mode) ? Qt : Qnil); | |
14d55bce | 941 | values[1] = make_number (s.st_nlink); |
51105b13 EZ |
942 | |
943 | if (!(NILP (id_format) || EQ (id_format, Qinteger))) | |
6b61353c | 944 | { |
4d7e6e51 | 945 | block_input (); |
8aaaec6b | 946 | uname = stat_uname (&s); |
8aaaec6b | 947 | gname = stat_gname (&s); |
4d7e6e51 | 948 | unblock_input (); |
6b61353c | 949 | } |
51105b13 | 950 | if (uname) |
80904120 | 951 | values[2] = DECODE_SYSTEM (build_string (uname)); |
51105b13 | 952 | else |
58a12889 | 953 | values[2] = make_fixnum_or_float (s.st_uid); |
51105b13 | 954 | if (gname) |
80904120 | 955 | values[3] = DECODE_SYSTEM (build_string (gname)); |
51105b13 | 956 | else |
58a12889 | 957 | values[3] = make_fixnum_or_float (s.st_gid); |
51105b13 | 958 | |
d35af63c PE |
959 | values[4] = make_lisp_time (get_stat_atime (&s)); |
960 | values[5] = make_lisp_time (get_stat_mtime (&s)); | |
961 | values[6] = make_lisp_time (get_stat_ctime (&s)); | |
83c77d31 PE |
962 | |
963 | /* If the file size is a 4-byte type, assume that files of sizes in | |
964 | the 2-4 GiB range wrap around to negative values, as this is a | |
965 | common bug on older 32-bit platforms. */ | |
966 | if (sizeof (s.st_size) == 4) | |
967 | values[7] = make_fixnum_or_float (s.st_size & 0xffffffffu); | |
968 | else | |
969 | values[7] = make_fixnum_or_float (s.st_size); | |
4bc12672 | 970 | |
14d55bce RS |
971 | filemodestring (&s, modes); |
972 | values[8] = make_string (modes, 10); | |
97976f9f | 973 | values[9] = Qt; |
be44ca6c PE |
974 | values[10] = INTEGER_TO_CONS (s.st_ino); |
975 | values[11] = INTEGER_TO_CONS (s.st_dev); | |
68c45bf0 | 976 | |
5e617bc2 | 977 | return Flist (sizeof (values) / sizeof (values[0]), values); |
14d55bce | 978 | } |
4424b255 GV |
979 | |
980 | DEFUN ("file-attributes-lessp", Ffile_attributes_lessp, Sfile_attributes_lessp, 2, 2, 0, | |
335c5470 PJ |
981 | doc: /* Return t if first arg file attributes list is less than second. |
982 | Comparison is in lexicographic order and case is significant. */) | |
5842a27b | 983 | (Lisp_Object f1, Lisp_Object f2) |
4424b255 GV |
984 | { |
985 | return Fstring_lessp (Fcar (f1), Fcar (f2)); | |
986 | } | |
14d55bce | 987 | \f |
316411f0 DA |
988 | |
989 | DEFUN ("system-users", Fsystem_users, Ssystem_users, 0, 0, 0, | |
990 | doc: /* Return a list of user names currently registered in the system. | |
e5a36063 GM |
991 | If we don't know how to determine that on this platform, just |
992 | return a list with one element, taken from `user-real-login-name'. */) | |
316411f0 DA |
993 | (void) |
994 | { | |
995 | Lisp_Object users = Qnil; | |
aba027e8 | 996 | #if defined HAVE_GETPWENT && defined HAVE_ENDPWENT |
316411f0 DA |
997 | struct passwd *pw; |
998 | ||
999 | while ((pw = getpwent ())) | |
1000 | users = Fcons (DECODE_SYSTEM (build_string (pw->pw_name)), users); | |
1001 | ||
1002 | endpwent (); | |
1003 | #endif | |
1004 | if (EQ (users, Qnil)) | |
1005 | /* At least current user is always known. */ | |
1006 | users = Fcons (Vuser_real_login_name, Qnil); | |
1007 | return users; | |
1008 | } | |
1009 | ||
1010 | DEFUN ("system-groups", Fsystem_groups, Ssystem_groups, 0, 0, 0, | |
1011 | doc: /* Return a list of user group names currently registered in the system. | |
1012 | The value may be nil if not supported on this platform. */) | |
1013 | (void) | |
1014 | { | |
1015 | Lisp_Object groups = Qnil; | |
aba027e8 | 1016 | #if defined HAVE_GETGRENT && defined HAVE_ENDGRENT |
316411f0 | 1017 | struct group *gr; |
316411f0 DA |
1018 | |
1019 | while ((gr = getgrent ())) | |
1020 | groups = Fcons (DECODE_SYSTEM (build_string (gr->gr_name)), groups); | |
1021 | ||
1022 | endgrent (); | |
1023 | #endif | |
1024 | return groups; | |
1025 | } | |
1026 | ||
dfcf069d | 1027 | void |
971de7fb | 1028 | syms_of_dired (void) |
14d55bce | 1029 | { |
cd3520a4 JB |
1030 | DEFSYM (Qdirectory_files, "directory-files"); |
1031 | DEFSYM (Qdirectory_files_and_attributes, "directory-files-and-attributes"); | |
1032 | DEFSYM (Qfile_name_completion, "file-name-completion"); | |
1033 | DEFSYM (Qfile_name_all_completions, "file-name-all-completions"); | |
1034 | DEFSYM (Qfile_attributes, "file-attributes"); | |
1035 | DEFSYM (Qfile_attributes_lessp, "file-attributes-lessp"); | |
1036 | DEFSYM (Qdefault_directory, "default-directory"); | |
a2d3836c | 1037 | |
14d55bce | 1038 | defsubr (&Sdirectory_files); |
4424b255 | 1039 | defsubr (&Sdirectory_files_and_attributes); |
14d55bce | 1040 | defsubr (&Sfile_name_completion); |
14d55bce RS |
1041 | defsubr (&Sfile_name_all_completions); |
1042 | defsubr (&Sfile_attributes); | |
4424b255 | 1043 | defsubr (&Sfile_attributes_lessp); |
316411f0 DA |
1044 | defsubr (&Ssystem_users); |
1045 | defsubr (&Ssystem_groups); | |
14d55bce | 1046 | |
29208e82 | 1047 | DEFVAR_LISP ("completion-ignored-extensions", Vcompletion_ignored_extensions, |
407a52c4 LT |
1048 | doc: /* Completion ignores file names ending in any string in this list. |
1049 | It does not ignore them if all possible completions end in one of | |
1050 | these strings or when displaying a list of completions. | |
1051 | It ignores directory names if they match any string in this list which | |
1052 | ends in a slash. */); | |
14d55bce RS |
1053 | Vcompletion_ignored_extensions = Qnil; |
1054 | } |