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14d55bce | 1 | /* Lisp functions for making directory listings. |
ba318903 | 2 | Copyright (C) 1985-1986, 1993-1994, 1999-2014 Free Software |
ab422c4d | 3 | Foundation, Inc. |
14d55bce RS |
4 | |
5 | This file is part of GNU Emacs. | |
6 | ||
9ec0b715 | 7 | GNU Emacs is free software: you can redistribute it and/or modify |
14d55bce | 8 | it under the terms of the GNU General Public License as published by |
9ec0b715 GM |
9 | the Free Software Foundation, either version 3 of the License, or |
10 | (at your option) any later version. | |
14d55bce RS |
11 | |
12 | GNU Emacs is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
9ec0b715 | 18 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
14d55bce RS |
19 | |
20 | ||
3964b9a7 RS |
21 | #include <config.h> |
22 | ||
14d55bce RS |
23 | #include <stdio.h> |
24 | #include <sys/types.h> | |
25 | #include <sys/stat.h> | |
26 | ||
5b9c0a1d | 27 | #ifdef HAVE_PWD_H |
6b61353c | 28 | #include <pwd.h> |
5b9c0a1d | 29 | #endif |
6b61353c | 30 | #include <grp.h> |
6b61353c | 31 | |
7cc9f69f | 32 | #include <errno.h> |
8654f9d7 | 33 | #include <fcntl.h> |
dfcf069d | 34 | #include <unistd.h> |
dfcf069d | 35 | |
14d55bce | 36 | #include <dirent.h> |
d209feed | 37 | #include <filemode.h> |
d35af63c | 38 | #include <stat-time.h> |
d209feed | 39 | |
14d55bce | 40 | #include "lisp.h" |
fa8459a3 | 41 | #include "systime.h" |
e5560ff7 | 42 | #include "character.h" |
14d55bce RS |
43 | #include "buffer.h" |
44 | #include "commands.h" | |
bd33479f KH |
45 | #include "charset.h" |
46 | #include "coding.h" | |
14d55bce | 47 | #include "regex.h" |
8c8a7c58 | 48 | #include "blockinput.h" |
14d55bce | 49 | |
955cbe7b PE |
50 | static Lisp_Object Qdirectory_files; |
51 | static Lisp_Object Qdirectory_files_and_attributes; | |
52 | static Lisp_Object Qfile_name_completion; | |
53 | static Lisp_Object Qfile_name_all_completions; | |
54 | static Lisp_Object Qfile_attributes; | |
55 | static Lisp_Object Qfile_attributes_lessp; | |
b3f04ced | 56 | |
d311d28c | 57 | static ptrdiff_t scmp (const char *, const char *, ptrdiff_t); |
8654f9d7 | 58 | static Lisp_Object file_attributes (int, char const *, Lisp_Object); |
14d55bce | 59 | \f |
95ef7787 PE |
60 | /* Return the number of bytes in DP's name. */ |
61 | static ptrdiff_t | |
62 | dirent_namelen (struct dirent *dp) | |
63 | { | |
64 | #ifdef _D_EXACT_NAMLEN | |
65 | return _D_EXACT_NAMLEN (dp); | |
66 | #else | |
67 | return strlen (dp->d_name); | |
68 | #endif | |
69 | } | |
70 | ||
8654f9d7 PE |
71 | static DIR * |
72 | open_directory (char const *name, int *fdp) | |
73 | { | |
74 | DIR *d; | |
75 | int fd, opendir_errno; | |
76 | ||
77 | block_input (); | |
78 | ||
79 | #ifdef DOS_NT | |
80 | /* Directories cannot be opened. The emulation assumes that any | |
81 | file descriptor other than AT_FDCWD corresponds to the most | |
82 | recently opened directory. This hack is good enough for Emacs. */ | |
83 | fd = 0; | |
84 | d = opendir (name); | |
85 | opendir_errno = errno; | |
86 | #else | |
87 | fd = emacs_open (name, O_RDONLY | O_DIRECTORY, 0); | |
88 | if (fd < 0) | |
89 | { | |
90 | opendir_errno = errno; | |
91 | d = 0; | |
92 | } | |
93 | else | |
94 | { | |
95 | d = fdopendir (fd); | |
96 | opendir_errno = errno; | |
97 | if (! d) | |
bacba3c2 | 98 | emacs_close (fd); |
8654f9d7 PE |
99 | } |
100 | #endif | |
101 | ||
102 | unblock_input (); | |
103 | ||
104 | *fdp = fd; | |
105 | errno = opendir_errno; | |
106 | return d; | |
107 | } | |
108 | ||
65156807 | 109 | #ifdef WINDOWSNT |
27e498e6 | 110 | void |
65156807 EZ |
111 | directory_files_internal_w32_unwind (Lisp_Object arg) |
112 | { | |
113 | Vw32_get_true_file_attributes = arg; | |
65156807 EZ |
114 | } |
115 | #endif | |
2488aba5 | 116 | |
27e498e6 PE |
117 | static void |
118 | directory_files_internal_unwind (void *dh) | |
2488aba5 | 119 | { |
27e498e6 | 120 | DIR *d = dh; |
4d7e6e51 | 121 | block_input (); |
2488aba5 | 122 | closedir (d); |
4d7e6e51 | 123 | unblock_input (); |
2488aba5 AI |
124 | } |
125 | ||
177c0ea7 | 126 | /* Function shared by Fdirectory_files and Fdirectory_files_and_attributes. |
de1339b0 PE |
127 | If not ATTRS, return a list of directory filenames; |
128 | if ATTRS, return a list of directory filenames and their attributes. | |
6b61353c | 129 | In the latter case, ID_FORMAT is passed to Ffile_attributes. */ |
f69f9da1 | 130 | |
4424b255 | 131 | Lisp_Object |
de1339b0 PE |
132 | directory_files_internal (Lisp_Object directory, Lisp_Object full, |
133 | Lisp_Object match, Lisp_Object nosort, bool attrs, | |
134 | Lisp_Object id_format) | |
14d55bce RS |
135 | { |
136 | DIR *d; | |
8654f9d7 | 137 | int fd; |
d311d28c | 138 | ptrdiff_t directory_nbytes; |
388ac098 | 139 | Lisp_Object list, dirfilename, encoded_directory; |
6bbd7a29 | 140 | struct re_pattern_buffer *bufp = NULL; |
de1339b0 | 141 | bool needsep = 0; |
d311d28c | 142 | ptrdiff_t count = SPECPDL_INDEX (); |
388ac098 | 143 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5; |
95ef7787 | 144 | struct dirent *dp; |
65156807 EZ |
145 | #ifdef WINDOWSNT |
146 | Lisp_Object w32_save = Qnil; | |
147 | #endif | |
32f4334d | 148 | |
96d64004 | 149 | /* Because of file name handlers, these functions might call |
6155fae1 | 150 | Ffuncall, and cause a GC. */ |
388ac098 GM |
151 | list = encoded_directory = dirfilename = Qnil; |
152 | GCPRO5 (match, directory, list, dirfilename, encoded_directory); | |
96d64004 | 153 | dirfilename = Fdirectory_file_name (directory); |
6155fae1 | 154 | |
265a9e55 | 155 | if (!NILP (match)) |
14d55bce | 156 | { |
b7826503 | 157 | CHECK_STRING (match); |
ebb9e16f JB |
158 | |
159 | /* MATCH might be a flawed regular expression. Rather than | |
8e6208c5 | 160 | catching and signaling our own errors, we just call |
ebb9e16f | 161 | compile_pattern to do the work for us. */ |
c872c6b2 RS |
162 | /* Pass 1 for the MULTIBYTE arg |
163 | because we do make multibyte strings if the contents warrant. */ | |
1a9fbabe EZ |
164 | # ifdef WINDOWSNT |
165 | /* Windows users want case-insensitive wildcards. */ | |
166 | bufp = compile_pattern (match, 0, | |
4b4deea2 | 167 | BVAR (&buffer_defaults, case_canon_table), 0, 1); |
1a9fbabe | 168 | # else /* !WINDOWSNT */ |
3e937712 | 169 | bufp = compile_pattern (match, 0, Qnil, 0, 1); |
1a9fbabe | 170 | # endif /* !WINDOWSNT */ |
14d55bce RS |
171 | } |
172 | ||
b3edfc9b | 173 | /* Note: ENCODE_FILE and DECODE_FILE can GC because they can run |
388ac098 GM |
174 | run_pre_post_conversion_on_str which calls Lisp directly and |
175 | indirectly. */ | |
6c8b4f07 SM |
176 | if (STRING_MULTIBYTE (dirfilename)) |
177 | dirfilename = ENCODE_FILE (dirfilename); | |
178 | encoded_directory = (STRING_MULTIBYTE (directory) | |
179 | ? ENCODE_FILE (directory) : directory); | |
24c2a54f | 180 | |
e50c66d3 | 181 | /* Now *bufp is the compiled form of MATCH; don't call anything |
6155fae1 JB |
182 | which might compile a new regexp until we're done with the loop! */ |
183 | ||
8654f9d7 | 184 | d = open_directory (SSDATA (dirfilename), &fd); |
388ac098 | 185 | if (d == NULL) |
a9757f6a | 186 | report_file_error ("Opening directory", directory); |
14d55bce | 187 | |
2488aba5 AI |
188 | /* Unfortunately, we can now invoke expand-file-name and |
189 | file-attributes on filenames, both of which can throw, so we must | |
190 | do a proper unwind-protect. */ | |
27e498e6 | 191 | record_unwind_protect_ptr (directory_files_internal_unwind, d); |
2488aba5 | 192 | |
65156807 EZ |
193 | #ifdef WINDOWSNT |
194 | if (attrs) | |
195 | { | |
65156807 EZ |
196 | extern int is_slow_fs (const char *); |
197 | ||
198 | /* Do this only once to avoid doing it (in w32.c:stat) for each | |
199 | file in the directory, when we call Ffile_attributes below. */ | |
200 | record_unwind_protect (directory_files_internal_w32_unwind, | |
201 | Vw32_get_true_file_attributes); | |
202 | w32_save = Vw32_get_true_file_attributes; | |
203 | if (EQ (Vw32_get_true_file_attributes, Qlocal)) | |
204 | { | |
65156807 EZ |
205 | /* w32.c:stat will notice these bindings and avoid calling |
206 | GetDriveType for each file. */ | |
b6046155 | 207 | if (is_slow_fs (SDATA (dirfilename))) |
65156807 EZ |
208 | Vw32_get_true_file_attributes = Qnil; |
209 | else | |
210 | Vw32_get_true_file_attributes = Qt; | |
211 | } | |
212 | } | |
213 | #endif | |
214 | ||
d5db4077 | 215 | directory_nbytes = SBYTES (directory); |
c81a9bdc | 216 | re_match_object = Qt; |
14d55bce | 217 | |
96d64004 | 218 | /* Decide whether we need to add a directory separator. */ |
388ac098 | 219 | if (directory_nbytes == 0 |
d5db4077 | 220 | || !IS_ANY_SEP (SREF (directory, directory_nbytes - 1))) |
96d64004 | 221 | needsep = 1; |
96d64004 | 222 | |
8e42f043 | 223 | /* Loop reading blocks until EOF or error. */ |
f69f9da1 | 224 | for (;;) |
14d55bce | 225 | { |
95ef7787 PE |
226 | ptrdiff_t len; |
227 | bool wanted = 0; | |
228 | Lisp_Object name, finalname; | |
229 | struct gcpro gcpro1, gcpro2; | |
230 | ||
f69f9da1 GM |
231 | errno = 0; |
232 | dp = readdir (d); | |
22626a85 PE |
233 | if (!dp) |
234 | { | |
235 | if (errno == EAGAIN || errno == EINTR) | |
236 | { | |
237 | QUIT; | |
238 | continue; | |
239 | } | |
240 | break; | |
241 | } | |
f69f9da1 | 242 | |
95ef7787 PE |
243 | len = dirent_namelen (dp); |
244 | name = finalname = make_unibyte_string (dp->d_name, len); | |
245 | GCPRO2 (finalname, name); | |
246 | ||
247 | /* Note: DECODE_FILE can GC; it should protect its argument, | |
248 | though. */ | |
249 | name = DECODE_FILE (name); | |
250 | len = SBYTES (name); | |
251 | ||
252 | /* Now that we have unwind_protect in place, we might as well | |
253 | allow matching to be interrupted. */ | |
254 | immediate_quit = 1; | |
255 | QUIT; | |
256 | ||
257 | if (NILP (match) | |
908589fd | 258 | || re_search (bufp, SSDATA (name), len, 0, len, 0) >= 0) |
95ef7787 PE |
259 | wanted = 1; |
260 | ||
261 | immediate_quit = 0; | |
262 | ||
263 | if (wanted) | |
14d55bce | 264 | { |
95ef7787 PE |
265 | if (!NILP (full)) |
266 | { | |
267 | Lisp_Object fullname; | |
268 | ptrdiff_t nbytes = len + directory_nbytes + needsep; | |
269 | ptrdiff_t nchars; | |
e23f810c | 270 | |
95ef7787 PE |
271 | fullname = make_uninit_multibyte_string (nbytes, nbytes); |
272 | memcpy (SDATA (fullname), SDATA (directory), | |
273 | directory_nbytes); | |
177c0ea7 | 274 | |
95ef7787 PE |
275 | if (needsep) |
276 | SSET (fullname, directory_nbytes, DIRECTORY_SEP); | |
e23f810c | 277 | |
95ef7787 PE |
278 | memcpy (SDATA (fullname) + directory_nbytes + needsep, |
279 | SDATA (name), len); | |
2488aba5 | 280 | |
b3f1d119 | 281 | nchars = multibyte_chars_in_text (SDATA (fullname), nbytes); |
2488aba5 | 282 | |
95ef7787 PE |
283 | /* Some bug somewhere. */ |
284 | if (nchars > nbytes) | |
285 | emacs_abort (); | |
2488aba5 | 286 | |
95ef7787 PE |
287 | STRING_SET_CHARS (fullname, nchars); |
288 | if (nchars == nbytes) | |
289 | STRING_SET_UNIBYTE (fullname); | |
290 | ||
291 | finalname = fullname; | |
14d55bce | 292 | } |
95ef7787 PE |
293 | else |
294 | finalname = name; | |
388ac098 | 295 | |
95ef7787 PE |
296 | if (attrs) |
297 | { | |
8654f9d7 PE |
298 | Lisp_Object fileattrs |
299 | = file_attributes (fd, dp->d_name, id_format); | |
95ef7787 | 300 | list = Fcons (Fcons (finalname, fileattrs), list); |
95ef7787 PE |
301 | } |
302 | else | |
303 | list = Fcons (finalname, list); | |
14d55bce | 304 | } |
95ef7787 PE |
305 | |
306 | UNGCPRO; | |
14d55bce | 307 | } |
2488aba5 | 308 | |
4d7e6e51 | 309 | block_input (); |
14d55bce | 310 | closedir (d); |
4d7e6e51 | 311 | unblock_input (); |
65156807 EZ |
312 | #ifdef WINDOWSNT |
313 | if (attrs) | |
314 | Vw32_get_true_file_attributes = w32_save; | |
315 | #endif | |
2488aba5 AI |
316 | |
317 | /* Discard the unwind protect. */ | |
318 | specpdl_ptr = specpdl + count; | |
319 | ||
388ac098 GM |
320 | if (NILP (nosort)) |
321 | list = Fsort (Fnreverse (list), | |
322 | attrs ? Qfile_attributes_lessp : Qstring_lessp); | |
177c0ea7 | 323 | |
388ac098 | 324 | RETURN_UNGCPRO (list); |
14d55bce | 325 | } |
4424b255 GV |
326 | |
327 | ||
328 | DEFUN ("directory-files", Fdirectory_files, Sdirectory_files, 1, 4, 0, | |
335c5470 PJ |
329 | doc: /* Return a list of names of files in DIRECTORY. |
330 | There are three optional arguments: | |
331 | If FULL is non-nil, return absolute file names. Otherwise return names | |
332 | that are relative to the specified directory. | |
333 | If MATCH is non-nil, mention only file names that match the regexp MATCH. | |
334 | If NOSORT is non-nil, the list is not sorted--its order is unpredictable. | |
a489517b JB |
335 | Otherwise, the list returned is sorted with `string-lessp'. |
336 | NOSORT is useful if you plan to sort the result yourself. */) | |
5842a27b | 337 | (Lisp_Object directory, Lisp_Object full, Lisp_Object match, Lisp_Object nosort) |
4424b255 GV |
338 | { |
339 | Lisp_Object handler; | |
4ece81a6 | 340 | directory = Fexpand_file_name (directory, Qnil); |
4424b255 GV |
341 | |
342 | /* If the file name has special constructs in it, | |
343 | call the corresponding file handler. */ | |
344 | handler = Ffind_file_name_handler (directory, Qdirectory_files); | |
345 | if (!NILP (handler)) | |
6b61353c KH |
346 | return call5 (handler, Qdirectory_files, directory, |
347 | full, match, nosort); | |
4424b255 | 348 | |
6b61353c | 349 | return directory_files_internal (directory, full, match, nosort, 0, Qnil); |
4424b255 GV |
350 | } |
351 | ||
335c5470 | 352 | DEFUN ("directory-files-and-attributes", Fdirectory_files_and_attributes, |
6b61353c | 353 | Sdirectory_files_and_attributes, 1, 5, 0, |
335c5470 | 354 | doc: /* Return a list of names of files and their attributes in DIRECTORY. |
6b61353c | 355 | There are four optional arguments: |
335c5470 PJ |
356 | If FULL is non-nil, return absolute file names. Otherwise return names |
357 | that are relative to the specified directory. | |
358 | If MATCH is non-nil, mention only file names that match the regexp MATCH. | |
359 | If NOSORT is non-nil, the list is not sorted--its order is unpredictable. | |
6b61353c KH |
360 | NOSORT is useful if you plan to sort the result yourself. |
361 | ID-FORMAT specifies the preferred format of attributes uid and gid, see | |
6c5665e9 EZ |
362 | `file-attributes' for further documentation. |
363 | On MS-Windows, performance depends on `w32-get-true-file-attributes', | |
364 | which see. */) | |
5842a27b | 365 | (Lisp_Object directory, Lisp_Object full, Lisp_Object match, Lisp_Object nosort, Lisp_Object id_format) |
4424b255 GV |
366 | { |
367 | Lisp_Object handler; | |
4ece81a6 | 368 | directory = Fexpand_file_name (directory, Qnil); |
4424b255 GV |
369 | |
370 | /* If the file name has special constructs in it, | |
371 | call the corresponding file handler. */ | |
372 | handler = Ffind_file_name_handler (directory, Qdirectory_files_and_attributes); | |
373 | if (!NILP (handler)) | |
6b61353c KH |
374 | return call6 (handler, Qdirectory_files_and_attributes, |
375 | directory, full, match, nosort, id_format); | |
4424b255 | 376 | |
6b61353c | 377 | return directory_files_internal (directory, full, match, nosort, 1, id_format); |
4424b255 GV |
378 | } |
379 | ||
14d55bce | 380 | \f |
de1339b0 PE |
381 | static Lisp_Object file_name_completion (Lisp_Object, Lisp_Object, bool, |
382 | Lisp_Object); | |
14d55bce RS |
383 | |
384 | DEFUN ("file-name-completion", Ffile_name_completion, Sfile_name_completion, | |
abfb1932 | 385 | 2, 3, 0, |
335c5470 PJ |
386 | doc: /* Complete file name FILE in directory DIRECTORY. |
387 | Returns the longest string | |
388 | common to all file names in DIRECTORY that start with FILE. | |
389 | If there is only one and FILE matches it exactly, returns t. | |
2f60660a | 390 | Returns nil if DIRECTORY contains no name starting with FILE. |
335c5470 | 391 | |
b6ce54d6 RS |
392 | If PREDICATE is non-nil, call PREDICATE with each possible |
393 | completion (in absolute form) and ignore it if PREDICATE returns nil. | |
394 | ||
335c5470 PJ |
395 | This function ignores some of the possible completions as |
396 | determined by the variable `completion-ignored-extensions', which see. */) | |
5842a27b | 397 | (Lisp_Object file, Lisp_Object directory, Lisp_Object predicate) |
14d55bce | 398 | { |
32f4334d | 399 | Lisp_Object handler; |
32c1fffd | 400 | directory = Fexpand_file_name (directory, Qnil); |
32f4334d | 401 | |
8436e231 | 402 | /* If the directory name has special constructs in it, |
32f4334d | 403 | call the corresponding file handler. */ |
23bd240f | 404 | handler = Ffind_file_name_handler (directory, Qfile_name_completion); |
32f4334d | 405 | if (!NILP (handler)) |
abfb1932 | 406 | return call4 (handler, Qfile_name_completion, file, directory, predicate); |
32f4334d | 407 | |
8436e231 RS |
408 | /* If the file name has special constructs in it, |
409 | call the corresponding file handler. */ | |
410 | handler = Ffind_file_name_handler (file, Qfile_name_completion); | |
411 | if (!NILP (handler)) | |
abfb1932 | 412 | return call4 (handler, Qfile_name_completion, file, directory, predicate); |
8436e231 | 413 | |
de1339b0 | 414 | return file_name_completion (file, directory, 0, predicate); |
14d55bce RS |
415 | } |
416 | ||
417 | DEFUN ("file-name-all-completions", Ffile_name_all_completions, | |
335c5470 PJ |
418 | Sfile_name_all_completions, 2, 2, 0, |
419 | doc: /* Return a list of all completions of file name FILE in directory DIRECTORY. | |
420 | These are all file names in directory DIRECTORY which begin with FILE. */) | |
5842a27b | 421 | (Lisp_Object file, Lisp_Object directory) |
14d55bce | 422 | { |
32f4334d | 423 | Lisp_Object handler; |
32c1fffd | 424 | directory = Fexpand_file_name (directory, Qnil); |
32f4334d | 425 | |
8436e231 | 426 | /* If the directory name has special constructs in it, |
32f4334d | 427 | call the corresponding file handler. */ |
23bd240f | 428 | handler = Ffind_file_name_handler (directory, Qfile_name_all_completions); |
32f4334d | 429 | if (!NILP (handler)) |
23bd240f | 430 | return call3 (handler, Qfile_name_all_completions, file, directory); |
32f4334d | 431 | |
8436e231 RS |
432 | /* If the file name has special constructs in it, |
433 | call the corresponding file handler. */ | |
434 | handler = Ffind_file_name_handler (file, Qfile_name_all_completions); | |
435 | if (!NILP (handler)) | |
23bd240f | 436 | return call3 (handler, Qfile_name_all_completions, file, directory); |
8436e231 | 437 | |
de1339b0 | 438 | return file_name_completion (file, directory, 1, Qnil); |
14d55bce RS |
439 | } |
440 | ||
8654f9d7 | 441 | static int file_name_completion_stat (int, struct dirent *, struct stat *); |
955cbe7b | 442 | static Lisp_Object Qdefault_directory; |
dfcf069d | 443 | |
16390cd2 | 444 | static Lisp_Object |
de1339b0 PE |
445 | file_name_completion (Lisp_Object file, Lisp_Object dirname, bool all_flag, |
446 | Lisp_Object predicate) | |
14d55bce RS |
447 | { |
448 | DIR *d; | |
8654f9d7 | 449 | int fd; |
d311d28c | 450 | ptrdiff_t bestmatchsize = 0; |
14d55bce | 451 | int matchcount = 0; |
abfb1932 RS |
452 | /* If ALL_FLAG is 1, BESTMATCH is the list of all matches, decoded. |
453 | If ALL_FLAG is 0, BESTMATCH is either nil | |
454 | or the best match so far, not decoded. */ | |
14d55bce | 455 | Lisp_Object bestmatch, tem, elt, name; |
24c2a54f RS |
456 | Lisp_Object encoded_file; |
457 | Lisp_Object encoded_dir; | |
14d55bce | 458 | struct stat st; |
59ea14cd | 459 | bool directoryp; |
de1339b0 | 460 | /* If not INCLUDEALL, exclude files in completion-ignored-extensions as |
3271a8f5 SM |
461 | well as "." and "..". Until shown otherwise, assume we can't exclude |
462 | anything. */ | |
de1339b0 | 463 | bool includeall = 1; |
d311d28c | 464 | ptrdiff_t count = SPECPDL_INDEX (); |
24c2a54f | 465 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5; |
3fcc88cc | 466 | |
6bbd7a29 GM |
467 | elt = Qnil; |
468 | ||
b7826503 | 469 | CHECK_STRING (file); |
14d55bce | 470 | |
14d55bce | 471 | bestmatch = Qnil; |
24c2a54f RS |
472 | encoded_file = encoded_dir = Qnil; |
473 | GCPRO5 (file, dirname, bestmatch, encoded_file, encoded_dir); | |
01bb4018 | 474 | specbind (Qdefault_directory, dirname); |
14d55bce | 475 | |
24c2a54f RS |
476 | /* Do completion on the encoded file name |
477 | because the other names in the directory are (we presume) | |
478 | encoded likewise. We decode the completed string at the end. */ | |
2a54a229 SM |
479 | /* Actually, this is not quite true any more: we do most of the completion |
480 | work with decoded file names, but we still do some filtering based | |
481 | on the encoded file name. */ | |
6c8b4f07 | 482 | encoded_file = STRING_MULTIBYTE (file) ? ENCODE_FILE (file) : file; |
24c2a54f | 483 | |
e7ac588e | 484 | encoded_dir = ENCODE_FILE (Fdirectory_file_name (dirname)); |
24c2a54f | 485 | |
e7ac588e | 486 | d = open_directory (SSDATA (encoded_dir), &fd); |
3271a8f5 | 487 | if (!d) |
a9757f6a | 488 | report_file_error ("Opening directory", dirname); |
14d55bce | 489 | |
27e498e6 | 490 | record_unwind_protect_ptr (directory_files_internal_unwind, d); |
14d55bce | 491 | |
3271a8f5 SM |
492 | /* Loop reading blocks */ |
493 | /* (att3b compiler bug requires do a null comparison this way) */ | |
494 | while (1) | |
14d55bce | 495 | { |
95ef7787 | 496 | struct dirent *dp; |
d311d28c | 497 | ptrdiff_t len; |
de1339b0 | 498 | bool canexclude = 0; |
14d55bce | 499 | |
3271a8f5 SM |
500 | errno = 0; |
501 | dp = readdir (d); | |
22626a85 PE |
502 | if (!dp) |
503 | { | |
504 | if (errno == EAGAIN || errno == EINTR) | |
505 | { | |
506 | QUIT; | |
507 | continue; | |
508 | } | |
509 | break; | |
510 | } | |
14d55bce | 511 | |
95ef7787 | 512 | len = dirent_namelen (dp); |
14d55bce | 513 | |
3271a8f5 | 514 | QUIT; |
95ef7787 | 515 | if (len < SCHARS (encoded_file) |
7216e43b PE |
516 | || (scmp (dp->d_name, SSDATA (encoded_file), |
517 | SCHARS (encoded_file)) | |
518 | >= 0)) | |
3271a8f5 | 519 | continue; |
14d55bce | 520 | |
8654f9d7 | 521 | if (file_name_completion_stat (fd, dp, &st) < 0) |
3271a8f5 | 522 | continue; |
14d55bce | 523 | |
59ea14cd | 524 | directoryp = S_ISDIR (st.st_mode) != 0; |
3271a8f5 SM |
525 | tem = Qnil; |
526 | /* If all_flag is set, always include all. | |
527 | It would not actually be helpful to the user to ignore any possible | |
528 | completions when making a list of them. */ | |
529 | if (!all_flag) | |
530 | { | |
d311d28c | 531 | ptrdiff_t skip; |
2cd298e2 | 532 | |
7519c40d | 533 | #if 0 /* FIXME: The `scmp' call compares an encoded and a decoded string. */ |
2cd298e2 SM |
534 | /* If this entry matches the current bestmatch, the only |
535 | thing it can do is increase matchcount, so don't bother | |
536 | investigating it any further. */ | |
537 | if (!completion_ignore_case | |
538 | /* The return result depends on whether it's the sole match. */ | |
539 | && matchcount > 1 | |
540 | && !includeall /* This match may allow includeall to 0. */ | |
541 | && len >= bestmatchsize | |
4f043d0f | 542 | && 0 > scmp (dp->d_name, SSDATA (bestmatch), bestmatchsize)) |
2cd298e2 | 543 | continue; |
7519c40d | 544 | #endif |
2cd298e2 | 545 | |
3271a8f5 | 546 | if (directoryp) |
ad456ad4 RS |
547 | { |
548 | #ifndef TRIVIAL_DIRECTORY_ENTRY | |
549 | #define TRIVIAL_DIRECTORY_ENTRY(n) (!strcmp (n, ".") || !strcmp (n, "..")) | |
550 | #endif | |
abfb1932 RS |
551 | /* "." and ".." are never interesting as completions, and are |
552 | actually in the way in a directory with only one file. */ | |
3271a8f5 SM |
553 | if (TRIVIAL_DIRECTORY_ENTRY (dp->d_name)) |
554 | canexclude = 1; | |
555 | else if (len > SCHARS (encoded_file)) | |
d013f29b EZ |
556 | /* Ignore directories if they match an element of |
557 | completion-ignored-extensions which ends in a slash. */ | |
558 | for (tem = Vcompletion_ignored_extensions; | |
559 | CONSP (tem); tem = XCDR (tem)) | |
560 | { | |
d311d28c | 561 | ptrdiff_t elt_len; |
4f043d0f | 562 | char *p1; |
d013f29b EZ |
563 | |
564 | elt = XCAR (tem); | |
565 | if (!STRINGP (elt)) | |
566 | continue; | |
a74aaa9d EZ |
567 | /* Need to encode ELT, since scmp compares unibyte |
568 | strings only. */ | |
569 | elt = ENCODE_FILE (elt); | |
d5db4077 | 570 | elt_len = SCHARS (elt) - 1; /* -1 for trailing / */ |
7a8d465a | 571 | if (elt_len <= 0) |
d013f29b | 572 | continue; |
4f043d0f | 573 | p1 = SSDATA (elt); |
d013f29b EZ |
574 | if (p1[elt_len] != '/') |
575 | continue; | |
576 | skip = len - elt_len; | |
577 | if (skip < 0) | |
578 | continue; | |
579 | ||
908589fd | 580 | if (scmp (dp->d_name + skip, p1, elt_len) >= 0) |
d013f29b EZ |
581 | continue; |
582 | break; | |
583 | } | |
ad456ad4 RS |
584 | } |
585 | else | |
3271a8f5 | 586 | { |
14d55bce RS |
587 | /* Compare extensions-to-be-ignored against end of this file name */ |
588 | /* if name is not an exact match against specified string */ | |
3271a8f5 | 589 | if (len > SCHARS (encoded_file)) |
14d55bce RS |
590 | /* and exit this for loop if a match is found */ |
591 | for (tem = Vcompletion_ignored_extensions; | |
70949dac | 592 | CONSP (tem); tem = XCDR (tem)) |
14d55bce | 593 | { |
70949dac | 594 | elt = XCAR (tem); |
88cf1852 | 595 | if (!STRINGP (elt)) continue; |
a74aaa9d EZ |
596 | /* Need to encode ELT, since scmp compares unibyte |
597 | strings only. */ | |
598 | elt = ENCODE_FILE (elt); | |
d5db4077 | 599 | skip = len - SCHARS (elt); |
14d55bce RS |
600 | if (skip < 0) continue; |
601 | ||
908589fd AS |
602 | if (scmp (dp->d_name + skip, SSDATA (elt), SCHARS (elt)) |
603 | >= 0) | |
14d55bce RS |
604 | continue; |
605 | break; | |
606 | } | |
607 | } | |
608 | ||
f676868d KH |
609 | /* If an ignored-extensions match was found, |
610 | don't process this name as a completion. */ | |
3271a8f5 SM |
611 | if (CONSP (tem)) |
612 | canexclude = 1; | |
f676868d | 613 | |
3271a8f5 SM |
614 | if (!includeall && canexclude) |
615 | /* We're not including all files and this file can be excluded. */ | |
616 | continue; | |
9c691c00 | 617 | |
3271a8f5 SM |
618 | if (includeall && !canexclude) |
619 | { /* If we have one non-excludable file, we want to exclude the | |
4c36be58 | 620 | excludable files. */ |
3271a8f5 SM |
621 | includeall = 0; |
622 | /* Throw away any previous excludable match found. */ | |
623 | bestmatch = Qnil; | |
624 | bestmatchsize = 0; | |
625 | matchcount = 0; | |
f676868d | 626 | } |
3271a8f5 SM |
627 | } |
628 | /* FIXME: If we move this `decode' earlier we can eliminate | |
629 | the repeated ENCODE_FILE on Vcompletion_ignored_extensions. */ | |
630 | name = make_unibyte_string (dp->d_name, len); | |
631 | name = DECODE_FILE (name); | |
632 | ||
633 | { | |
634 | Lisp_Object regexps; | |
3271a8f5 SM |
635 | |
636 | /* Ignore this element if it fails to match all the regexps. */ | |
cc524e3b CY |
637 | if (completion_ignore_case) |
638 | { | |
639 | for (regexps = Vcompletion_regexp_list; CONSP (regexps); | |
640 | regexps = XCDR (regexps)) | |
641 | if (fast_string_match_ignore_case (XCAR (regexps), name) < 0) | |
642 | break; | |
643 | } | |
644 | else | |
645 | { | |
646 | for (regexps = Vcompletion_regexp_list; CONSP (regexps); | |
647 | regexps = XCDR (regexps)) | |
648 | if (fast_string_match (XCAR (regexps), name) < 0) | |
649 | break; | |
650 | } | |
651 | ||
3271a8f5 SM |
652 | if (CONSP (regexps)) |
653 | continue; | |
654 | } | |
655 | ||
656 | /* This is a possible completion */ | |
657 | if (directoryp) | |
658 | /* This completion is a directory; make it end with '/'. */ | |
659 | name = Ffile_name_as_directory (name); | |
660 | ||
661 | /* Test the predicate, if any. */ | |
662 | if (!NILP (predicate)) | |
663 | { | |
664 | Lisp_Object val; | |
dbf31225 | 665 | struct gcpro gcpro1; |
14d55bce | 666 | |
dbf31225 | 667 | GCPRO1 (name); |
3271a8f5 | 668 | val = call1 (predicate, name); |
dbf31225 | 669 | UNGCPRO; |
c4c52bb7 | 670 | |
3271a8f5 SM |
671 | if (NILP (val)) |
672 | continue; | |
673 | } | |
abfb1932 | 674 | |
3271a8f5 | 675 | /* Suitably record this match. */ |
14d55bce | 676 | |
d311d28c | 677 | matchcount += matchcount <= 1; |
f676868d | 678 | |
3271a8f5 SM |
679 | if (all_flag) |
680 | bestmatch = Fcons (name, bestmatch); | |
681 | else if (NILP (bestmatch)) | |
682 | { | |
683 | bestmatch = name; | |
684 | bestmatchsize = SCHARS (name); | |
685 | } | |
686 | else | |
687 | { | |
688 | Lisp_Object zero = make_number (0); | |
689 | /* FIXME: This is a copy of the code in Ftry_completion. */ | |
d311d28c | 690 | ptrdiff_t compare = min (bestmatchsize, SCHARS (name)); |
38b2c076 | 691 | Lisp_Object cmp |
3271a8f5 SM |
692 | = Fcompare_strings (bestmatch, zero, |
693 | make_number (compare), | |
694 | name, zero, | |
695 | make_number (compare), | |
696 | completion_ignore_case ? Qt : Qnil); | |
71376d4b | 697 | ptrdiff_t matchsize = EQ (cmp, Qt) ? compare : eabs (XINT (cmp)) - 1; |
3271a8f5 SM |
698 | |
699 | if (completion_ignore_case) | |
f676868d | 700 | { |
3271a8f5 SM |
701 | /* If this is an exact match except for case, |
702 | use it as the best match rather than one that is not | |
703 | an exact match. This way, we get the case pattern | |
704 | of the actual match. */ | |
705 | /* This tests that the current file is an exact match | |
706 | but BESTMATCH is not (it is too long). */ | |
707 | if ((matchsize == SCHARS (name) | |
59ea14cd | 708 | && matchsize + directoryp < SCHARS (bestmatch)) |
3271a8f5 SM |
709 | || |
710 | /* If there is no exact match ignoring case, | |
711 | prefer a match that does not change the case | |
712 | of the input. */ | |
713 | /* If there is more than one exact match aside from | |
714 | case, and one of them is exact including case, | |
715 | prefer that one. */ | |
716 | /* This == checks that, of current file and BESTMATCH, | |
717 | either both or neither are exact. */ | |
718 | (((matchsize == SCHARS (name)) | |
719 | == | |
59ea14cd | 720 | (matchsize + directoryp == SCHARS (bestmatch))) |
38b2c076 | 721 | && (cmp = Fcompare_strings (name, zero, |
3271a8f5 SM |
722 | make_number (SCHARS (file)), |
723 | file, zero, | |
724 | Qnil, | |
725 | Qnil), | |
38b2c076 PE |
726 | EQ (Qt, cmp)) |
727 | && (cmp = Fcompare_strings (bestmatch, zero, | |
3271a8f5 SM |
728 | make_number (SCHARS (file)), |
729 | file, zero, | |
730 | Qnil, | |
731 | Qnil), | |
38b2c076 | 732 | ! EQ (Qt, cmp)))) |
3271a8f5 | 733 | bestmatch = name; |
14d55bce | 734 | } |
3271a8f5 | 735 | bestmatchsize = matchsize; |
2cd298e2 SM |
736 | |
737 | /* If the best completion so far is reduced to the string | |
738 | we're trying to complete, then we already know there's no | |
739 | other completion, so there's no point looking any further. */ | |
740 | if (matchsize <= SCHARS (file) | |
741 | && !includeall /* A future match may allow includeall to 0. */ | |
742 | /* If completion-ignore-case is non-nil, don't | |
743 | short-circuit because we want to find the best | |
744 | possible match *including* case differences. */ | |
745 | && (!completion_ignore_case || matchsize == 0) | |
746 | /* The return value depends on whether it's the sole match. */ | |
747 | && matchcount > 1) | |
748 | break; | |
749 | ||
14d55bce | 750 | } |
14d55bce RS |
751 | } |
752 | ||
3fcc88cc | 753 | UNGCPRO; |
3271a8f5 | 754 | /* This closes the directory. */ |
c3a3229c | 755 | bestmatch = unbind_to (count, bestmatch); |
14d55bce | 756 | |
265a9e55 | 757 | if (all_flag || NILP (bestmatch)) |
2a54a229 | 758 | return bestmatch; |
928b5acc SM |
759 | /* Return t if the supplied string is an exact match (counting case); |
760 | it does not require any change to be made. */ | |
761 | if (matchcount == 1 && !NILP (Fequal (bestmatch, file))) | |
14d55bce | 762 | return Qt; |
24c2a54f RS |
763 | bestmatch = Fsubstring (bestmatch, make_number (0), |
764 | make_number (bestmatchsize)); | |
24c2a54f | 765 | return bestmatch; |
14d55bce RS |
766 | } |
767 | ||
b3f04ced RS |
768 | /* Compare exactly LEN chars of strings at S1 and S2, |
769 | ignoring case if appropriate. | |
770 | Return -1 if strings match, | |
771 | else number of chars that match at the beginning. */ | |
772 | ||
d311d28c PE |
773 | static ptrdiff_t |
774 | scmp (const char *s1, const char *s2, ptrdiff_t len) | |
b3f04ced | 775 | { |
d311d28c | 776 | register ptrdiff_t l = len; |
b3f04ced RS |
777 | |
778 | if (completion_ignore_case) | |
779 | { | |
4f043d0f | 780 | while (l |
5da9919f PE |
781 | && (downcase ((unsigned char) *s1++) |
782 | == downcase ((unsigned char) *s2++))) | |
b3f04ced RS |
783 | l--; |
784 | } | |
785 | else | |
786 | { | |
787 | while (l && *s1++ == *s2++) | |
788 | l--; | |
789 | } | |
790 | if (l == 0) | |
791 | return -1; | |
792 | else | |
793 | return len - l; | |
794 | } | |
795 | ||
dfcf069d | 796 | static int |
8654f9d7 | 797 | file_name_completion_stat (int fd, struct dirent *dp, struct stat *st_addr) |
14d55bce | 798 | { |
7e3cf34f | 799 | int value; |
14d55bce | 800 | |
04924ee3 | 801 | #ifdef MSDOS |
04924ee3 RS |
802 | /* Some fields of struct stat are *very* expensive to compute on MS-DOS, |
803 | but aren't required here. Avoid computing the following fields: | |
804 | st_inode, st_size and st_nlink for directories, and the execute bits | |
805 | in st_mode for non-directory files with non-standard extensions. */ | |
806 | ||
807 | unsigned short save_djstat_flags = _djstat_flags; | |
808 | ||
809 | _djstat_flags = _STAT_INODE | _STAT_EXEC_MAGIC | _STAT_DIRSIZE; | |
04924ee3 RS |
810 | #endif /* MSDOS */ |
811 | ||
7e3cf34f RS |
812 | /* We want to return success if a link points to a nonexistent file, |
813 | but we want to return the status for what the link points to, | |
814 | in case it is a directory. */ | |
8654f9d7 | 815 | value = fstatat (fd, dp->d_name, st_addr, AT_SYMLINK_NOFOLLOW); |
f68c809d | 816 | if (value == 0 && S_ISLNK (st_addr->st_mode)) |
8654f9d7 | 817 | fstatat (fd, dp->d_name, st_addr, 0); |
04924ee3 | 818 | #ifdef MSDOS |
04924ee3 | 819 | _djstat_flags = save_djstat_flags; |
04924ee3 RS |
820 | #endif /* MSDOS */ |
821 | return value; | |
14d55bce RS |
822 | } |
823 | \f | |
8aaaec6b EZ |
824 | static char * |
825 | stat_uname (struct stat *st) | |
826 | { | |
827 | #ifdef WINDOWSNT | |
828 | return st->st_uname; | |
829 | #else | |
350e0088 | 830 | struct passwd *pw = getpwuid (st->st_uid); |
8aaaec6b EZ |
831 | |
832 | if (pw) | |
833 | return pw->pw_name; | |
834 | else | |
835 | return NULL; | |
836 | #endif | |
837 | } | |
838 | ||
839 | static char * | |
840 | stat_gname (struct stat *st) | |
841 | { | |
842 | #ifdef WINDOWSNT | |
843 | return st->st_gname; | |
844 | #else | |
350e0088 | 845 | struct group *gr = getgrgid (st->st_gid); |
8aaaec6b EZ |
846 | |
847 | if (gr) | |
848 | return gr->gr_name; | |
849 | else | |
850 | return NULL; | |
851 | #endif | |
852 | } | |
853 | ||
6b61353c | 854 | DEFUN ("file-attributes", Ffile_attributes, Sfile_attributes, 1, 2, 0, |
335c5470 PJ |
855 | doc: /* Return a list of attributes of file FILENAME. |
856 | Value is nil if specified file cannot be opened. | |
6b61353c KH |
857 | |
858 | ID-FORMAT specifies the preferred format of attributes uid and gid (see | |
e42cd1a7 JB |
859 | below) - valid values are 'string and 'integer. The latter is the |
860 | default, but we plan to change that, so you should specify a non-nil value | |
861 | for ID-FORMAT if you use the returned uid or gid. | |
6b61353c KH |
862 | |
863 | Elements of the attribute list are: | |
335c5470 PJ |
864 | 0. t for directory, string (name linked to) for symbolic link, or nil. |
865 | 1. Number of links to file. | |
78e7d1fe EZ |
866 | 2. File uid as a string or a number. If a string value cannot be |
867 | looked up, a numeric value, either an integer or a float, is returned. | |
6b61353c | 868 | 3. File gid, likewise. |
d35af63c PE |
869 | 4. Last access time, as a list of integers (HIGH LOW USEC PSEC) in the |
870 | same style as (current-time). | |
e02131a2 EZ |
871 | (See a note below about access time on FAT-based filesystems.) |
872 | 5. Last modification time, likewise. This is the time of the last | |
873 | change to the file's contents. | |
874 | 6. Last status change time, likewise. This is the time of last change | |
875 | to the file's attributes: owner and group, access mode bits, etc. | |
335c5470 PJ |
876 | 7. Size in bytes. |
877 | This is a floating point number if the size is too large for an integer. | |
878 | 8. File modes, as a string of ten letters or dashes as in ls -l. | |
97976f9f | 879 | 9. An unspecified value, present only for backward compatibility. |
be44ca6c PE |
880 | 10. inode number. If it is larger than what an Emacs integer can hold, |
881 | this is of the form (HIGH . LOW): first the high bits, then the low 16 bits. | |
882 | If even HIGH is too large for an Emacs integer, this is instead of the form | |
883 | (HIGH MIDDLE . LOW): first the high bits, then the middle 24 bits, | |
e02131a2 EZ |
884 | and finally the low 16 bits. |
885 | 11. Filesystem device number. If it is larger than what the Emacs | |
886 | integer can hold, this is a cons cell, similar to the inode number. | |
887 | ||
888 | On most filesystems, the combination of the inode and the device | |
889 | number uniquely identifies the file. | |
6c5665e9 EZ |
890 | |
891 | On MS-Windows, performance depends on `w32-get-true-file-attributes', | |
21f73755 EZ |
892 | which see. |
893 | ||
894 | On some FAT-based filesystems, only the date of last access is recorded, | |
895 | so last access time will always be midnight of that day. */) | |
5842a27b | 896 | (Lisp_Object filename, Lisp_Object id_format) |
14d55bce | 897 | { |
24c2a54f | 898 | Lisp_Object encoded; |
32f4334d | 899 | Lisp_Object handler; |
14d55bce RS |
900 | |
901 | filename = Fexpand_file_name (filename, Qnil); | |
32f4334d RS |
902 | |
903 | /* If the file name has special constructs in it, | |
904 | call the corresponding file handler. */ | |
a617e913 | 905 | handler = Ffind_file_name_handler (filename, Qfile_attributes); |
32f4334d | 906 | if (!NILP (handler)) |
6b61353c KH |
907 | { /* Only pass the extra arg if it is used to help backward compatibility |
908 | with old file handlers which do not implement the new arg. --Stef */ | |
909 | if (NILP (id_format)) | |
910 | return call2 (handler, Qfile_attributes, filename); | |
911 | else | |
912 | return call3 (handler, Qfile_attributes, filename, id_format); | |
913 | } | |
32f4334d | 914 | |
24c2a54f | 915 | encoded = ENCODE_FILE (filename); |
8654f9d7 PE |
916 | return file_attributes (AT_FDCWD, SSDATA (encoded), id_format); |
917 | } | |
918 | ||
919 | static Lisp_Object | |
920 | file_attributes (int fd, char const *name, Lisp_Object id_format) | |
921 | { | |
922 | Lisp_Object values[12]; | |
923 | struct stat s; | |
924 | int lstat_result; | |
925 | ||
926 | /* An array to hold the mode string generated by filemodestring, | |
927 | including its terminating space and null byte. */ | |
928 | char modes[sizeof "-rwxr-xr-x "]; | |
929 | ||
930 | char *uname = NULL, *gname = NULL; | |
24c2a54f | 931 | |
5c207910 EZ |
932 | #ifdef WINDOWSNT |
933 | /* We usually don't request accurate owner and group info, because | |
934 | it can be very expensive on Windows to get that, and most callers | |
935 | of 'lstat' don't need that. But here we do want that information | |
936 | to be accurate. */ | |
937 | w32_stat_get_owner_group = 1; | |
938 | #endif | |
939 | ||
8654f9d7 | 940 | lstat_result = fstatat (fd, name, &s, AT_SYMLINK_NOFOLLOW); |
5c207910 EZ |
941 | |
942 | #ifdef WINDOWSNT | |
943 | w32_stat_get_owner_group = 0; | |
944 | #endif | |
945 | ||
946 | if (lstat_result < 0) | |
14d55bce RS |
947 | return Qnil; |
948 | ||
8654f9d7 | 949 | values[0] = (S_ISLNK (s.st_mode) ? emacs_readlinkat (fd, name) |
8d40723d | 950 | : S_ISDIR (s.st_mode) ? Qt : Qnil); |
14d55bce | 951 | values[1] = make_number (s.st_nlink); |
51105b13 EZ |
952 | |
953 | if (!(NILP (id_format) || EQ (id_format, Qinteger))) | |
6b61353c | 954 | { |
4d7e6e51 | 955 | block_input (); |
8aaaec6b | 956 | uname = stat_uname (&s); |
8aaaec6b | 957 | gname = stat_gname (&s); |
4d7e6e51 | 958 | unblock_input (); |
6b61353c | 959 | } |
51105b13 | 960 | if (uname) |
df87c56c | 961 | values[2] = DECODE_SYSTEM (build_unibyte_string (uname)); |
51105b13 | 962 | else |
58a12889 | 963 | values[2] = make_fixnum_or_float (s.st_uid); |
51105b13 | 964 | if (gname) |
df87c56c | 965 | values[3] = DECODE_SYSTEM (build_unibyte_string (gname)); |
51105b13 | 966 | else |
58a12889 | 967 | values[3] = make_fixnum_or_float (s.st_gid); |
51105b13 | 968 | |
d35af63c PE |
969 | values[4] = make_lisp_time (get_stat_atime (&s)); |
970 | values[5] = make_lisp_time (get_stat_mtime (&s)); | |
971 | values[6] = make_lisp_time (get_stat_ctime (&s)); | |
83c77d31 PE |
972 | |
973 | /* If the file size is a 4-byte type, assume that files of sizes in | |
974 | the 2-4 GiB range wrap around to negative values, as this is a | |
975 | common bug on older 32-bit platforms. */ | |
976 | if (sizeof (s.st_size) == 4) | |
977 | values[7] = make_fixnum_or_float (s.st_size & 0xffffffffu); | |
978 | else | |
979 | values[7] = make_fixnum_or_float (s.st_size); | |
4bc12672 | 980 | |
14d55bce RS |
981 | filemodestring (&s, modes); |
982 | values[8] = make_string (modes, 10); | |
97976f9f | 983 | values[9] = Qt; |
be44ca6c PE |
984 | values[10] = INTEGER_TO_CONS (s.st_ino); |
985 | values[11] = INTEGER_TO_CONS (s.st_dev); | |
68c45bf0 | 986 | |
5e617bc2 | 987 | return Flist (sizeof (values) / sizeof (values[0]), values); |
14d55bce | 988 | } |
4424b255 GV |
989 | |
990 | DEFUN ("file-attributes-lessp", Ffile_attributes_lessp, Sfile_attributes_lessp, 2, 2, 0, | |
335c5470 PJ |
991 | doc: /* Return t if first arg file attributes list is less than second. |
992 | Comparison is in lexicographic order and case is significant. */) | |
5842a27b | 993 | (Lisp_Object f1, Lisp_Object f2) |
4424b255 GV |
994 | { |
995 | return Fstring_lessp (Fcar (f1), Fcar (f2)); | |
996 | } | |
14d55bce | 997 | \f |
316411f0 DA |
998 | |
999 | DEFUN ("system-users", Fsystem_users, Ssystem_users, 0, 0, 0, | |
1000 | doc: /* Return a list of user names currently registered in the system. | |
e5a36063 GM |
1001 | If we don't know how to determine that on this platform, just |
1002 | return a list with one element, taken from `user-real-login-name'. */) | |
316411f0 DA |
1003 | (void) |
1004 | { | |
1005 | Lisp_Object users = Qnil; | |
aba027e8 | 1006 | #if defined HAVE_GETPWENT && defined HAVE_ENDPWENT |
316411f0 DA |
1007 | struct passwd *pw; |
1008 | ||
1009 | while ((pw = getpwent ())) | |
1010 | users = Fcons (DECODE_SYSTEM (build_string (pw->pw_name)), users); | |
1011 | ||
1012 | endpwent (); | |
1013 | #endif | |
1014 | if (EQ (users, Qnil)) | |
1015 | /* At least current user is always known. */ | |
6c6f1994 | 1016 | users = list1 (Vuser_real_login_name); |
316411f0 DA |
1017 | return users; |
1018 | } | |
1019 | ||
1020 | DEFUN ("system-groups", Fsystem_groups, Ssystem_groups, 0, 0, 0, | |
1021 | doc: /* Return a list of user group names currently registered in the system. | |
1022 | The value may be nil if not supported on this platform. */) | |
1023 | (void) | |
1024 | { | |
1025 | Lisp_Object groups = Qnil; | |
aba027e8 | 1026 | #if defined HAVE_GETGRENT && defined HAVE_ENDGRENT |
316411f0 | 1027 | struct group *gr; |
316411f0 DA |
1028 | |
1029 | while ((gr = getgrent ())) | |
1030 | groups = Fcons (DECODE_SYSTEM (build_string (gr->gr_name)), groups); | |
1031 | ||
1032 | endgrent (); | |
1033 | #endif | |
1034 | return groups; | |
1035 | } | |
1036 | ||
dfcf069d | 1037 | void |
971de7fb | 1038 | syms_of_dired (void) |
14d55bce | 1039 | { |
cd3520a4 JB |
1040 | DEFSYM (Qdirectory_files, "directory-files"); |
1041 | DEFSYM (Qdirectory_files_and_attributes, "directory-files-and-attributes"); | |
1042 | DEFSYM (Qfile_name_completion, "file-name-completion"); | |
1043 | DEFSYM (Qfile_name_all_completions, "file-name-all-completions"); | |
1044 | DEFSYM (Qfile_attributes, "file-attributes"); | |
1045 | DEFSYM (Qfile_attributes_lessp, "file-attributes-lessp"); | |
1046 | DEFSYM (Qdefault_directory, "default-directory"); | |
a2d3836c | 1047 | |
14d55bce | 1048 | defsubr (&Sdirectory_files); |
4424b255 | 1049 | defsubr (&Sdirectory_files_and_attributes); |
14d55bce | 1050 | defsubr (&Sfile_name_completion); |
14d55bce RS |
1051 | defsubr (&Sfile_name_all_completions); |
1052 | defsubr (&Sfile_attributes); | |
4424b255 | 1053 | defsubr (&Sfile_attributes_lessp); |
316411f0 DA |
1054 | defsubr (&Ssystem_users); |
1055 | defsubr (&Ssystem_groups); | |
14d55bce | 1056 | |
29208e82 | 1057 | DEFVAR_LISP ("completion-ignored-extensions", Vcompletion_ignored_extensions, |
407a52c4 LT |
1058 | doc: /* Completion ignores file names ending in any string in this list. |
1059 | It does not ignore them if all possible completions end in one of | |
1060 | these strings or when displaying a list of completions. | |
1061 | It ignores directory names if they match any string in this list which | |
1062 | ends in a slash. */); | |
14d55bce RS |
1063 | Vcompletion_ignored_extensions = Qnil; |
1064 | } |