Commit | Line | Data |
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14d55bce | 1 | /* Lisp functions for making directory listings. |
ab422c4d PE |
2 | Copyright (C) 1985-1986, 1993-1994, 1999-2013 Free Software |
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) | |
98 | close (fd); | |
99 | } | |
100 | #endif | |
101 | ||
102 | unblock_input (); | |
103 | ||
104 | *fdp = fd; | |
105 | errno = opendir_errno; | |
106 | return d; | |
107 | } | |
108 | ||
65156807 EZ |
109 | #ifdef WINDOWSNT |
110 | Lisp_Object | |
111 | directory_files_internal_w32_unwind (Lisp_Object arg) | |
112 | { | |
113 | Vw32_get_true_file_attributes = arg; | |
114 | return Qnil; | |
115 | } | |
116 | #endif | |
2488aba5 | 117 | |
4a6bea26 | 118 | static Lisp_Object |
971de7fb | 119 | directory_files_internal_unwind (Lisp_Object dh) |
2488aba5 | 120 | { |
2b30549c | 121 | DIR *d = XSAVE_POINTER (dh, 0); |
4d7e6e51 | 122 | block_input (); |
2488aba5 | 123 | closedir (d); |
4d7e6e51 | 124 | unblock_input (); |
2488aba5 AI |
125 | return Qnil; |
126 | } | |
127 | ||
177c0ea7 | 128 | /* Function shared by Fdirectory_files and Fdirectory_files_and_attributes. |
de1339b0 PE |
129 | If not ATTRS, return a list of directory filenames; |
130 | if ATTRS, return a list of directory filenames and their attributes. | |
6b61353c | 131 | In the latter case, ID_FORMAT is passed to Ffile_attributes. */ |
f69f9da1 | 132 | |
4424b255 | 133 | Lisp_Object |
de1339b0 PE |
134 | directory_files_internal (Lisp_Object directory, Lisp_Object full, |
135 | Lisp_Object match, Lisp_Object nosort, bool attrs, | |
136 | Lisp_Object id_format) | |
14d55bce RS |
137 | { |
138 | DIR *d; | |
8654f9d7 | 139 | int fd; |
d311d28c | 140 | ptrdiff_t directory_nbytes; |
388ac098 | 141 | Lisp_Object list, dirfilename, encoded_directory; |
6bbd7a29 | 142 | struct re_pattern_buffer *bufp = NULL; |
de1339b0 | 143 | bool needsep = 0; |
d311d28c | 144 | ptrdiff_t count = SPECPDL_INDEX (); |
388ac098 | 145 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5; |
95ef7787 | 146 | struct dirent *dp; |
65156807 EZ |
147 | #ifdef WINDOWSNT |
148 | Lisp_Object w32_save = Qnil; | |
149 | #endif | |
32f4334d | 150 | |
96d64004 | 151 | /* Because of file name handlers, these functions might call |
6155fae1 | 152 | Ffuncall, and cause a GC. */ |
388ac098 GM |
153 | list = encoded_directory = dirfilename = Qnil; |
154 | GCPRO5 (match, directory, list, dirfilename, encoded_directory); | |
96d64004 | 155 | dirfilename = Fdirectory_file_name (directory); |
6155fae1 | 156 | |
265a9e55 | 157 | if (!NILP (match)) |
14d55bce | 158 | { |
b7826503 | 159 | CHECK_STRING (match); |
ebb9e16f JB |
160 | |
161 | /* MATCH might be a flawed regular expression. Rather than | |
8e6208c5 | 162 | catching and signaling our own errors, we just call |
ebb9e16f | 163 | compile_pattern to do the work for us. */ |
c872c6b2 RS |
164 | /* Pass 1 for the MULTIBYTE arg |
165 | because we do make multibyte strings if the contents warrant. */ | |
1a9fbabe EZ |
166 | # ifdef WINDOWSNT |
167 | /* Windows users want case-insensitive wildcards. */ | |
168 | bufp = compile_pattern (match, 0, | |
4b4deea2 | 169 | BVAR (&buffer_defaults, case_canon_table), 0, 1); |
1a9fbabe | 170 | # else /* !WINDOWSNT */ |
3e937712 | 171 | bufp = compile_pattern (match, 0, Qnil, 0, 1); |
1a9fbabe | 172 | # endif /* !WINDOWSNT */ |
14d55bce RS |
173 | } |
174 | ||
b3edfc9b | 175 | /* Note: ENCODE_FILE and DECODE_FILE can GC because they can run |
388ac098 GM |
176 | run_pre_post_conversion_on_str which calls Lisp directly and |
177 | indirectly. */ | |
6c8b4f07 SM |
178 | if (STRING_MULTIBYTE (dirfilename)) |
179 | dirfilename = ENCODE_FILE (dirfilename); | |
180 | encoded_directory = (STRING_MULTIBYTE (directory) | |
181 | ? ENCODE_FILE (directory) : directory); | |
24c2a54f | 182 | |
e50c66d3 | 183 | /* Now *bufp is the compiled form of MATCH; don't call anything |
6155fae1 JB |
184 | which might compile a new regexp until we're done with the loop! */ |
185 | ||
8654f9d7 | 186 | d = open_directory (SSDATA (dirfilename), &fd); |
388ac098 | 187 | if (d == NULL) |
23bd240f | 188 | report_file_error ("Opening directory", Fcons (directory, Qnil)); |
14d55bce | 189 | |
2488aba5 AI |
190 | /* Unfortunately, we can now invoke expand-file-name and |
191 | file-attributes on filenames, both of which can throw, so we must | |
192 | do a proper unwind-protect. */ | |
193 | record_unwind_protect (directory_files_internal_unwind, | |
468afbac | 194 | make_save_pointer (d)); |
2488aba5 | 195 | |
65156807 EZ |
196 | #ifdef WINDOWSNT |
197 | if (attrs) | |
198 | { | |
65156807 EZ |
199 | extern int is_slow_fs (const char *); |
200 | ||
201 | /* Do this only once to avoid doing it (in w32.c:stat) for each | |
202 | file in the directory, when we call Ffile_attributes below. */ | |
203 | record_unwind_protect (directory_files_internal_w32_unwind, | |
204 | Vw32_get_true_file_attributes); | |
205 | w32_save = Vw32_get_true_file_attributes; | |
206 | if (EQ (Vw32_get_true_file_attributes, Qlocal)) | |
207 | { | |
65156807 EZ |
208 | /* w32.c:stat will notice these bindings and avoid calling |
209 | GetDriveType for each file. */ | |
b6046155 | 210 | if (is_slow_fs (SDATA (dirfilename))) |
65156807 EZ |
211 | Vw32_get_true_file_attributes = Qnil; |
212 | else | |
213 | Vw32_get_true_file_attributes = Qt; | |
214 | } | |
215 | } | |
216 | #endif | |
217 | ||
d5db4077 | 218 | directory_nbytes = SBYTES (directory); |
c81a9bdc | 219 | re_match_object = Qt; |
14d55bce | 220 | |
96d64004 | 221 | /* Decide whether we need to add a directory separator. */ |
388ac098 | 222 | if (directory_nbytes == 0 |
d5db4077 | 223 | || !IS_ANY_SEP (SREF (directory, directory_nbytes - 1))) |
96d64004 | 224 | needsep = 1; |
96d64004 | 225 | |
8e42f043 | 226 | /* Loop reading blocks until EOF or error. */ |
f69f9da1 | 227 | for (;;) |
14d55bce | 228 | { |
95ef7787 PE |
229 | ptrdiff_t len; |
230 | bool wanted = 0; | |
231 | Lisp_Object name, finalname; | |
232 | struct gcpro gcpro1, gcpro2; | |
233 | ||
f69f9da1 GM |
234 | errno = 0; |
235 | dp = readdir (d); | |
22626a85 PE |
236 | if (!dp) |
237 | { | |
238 | if (errno == EAGAIN || errno == EINTR) | |
239 | { | |
240 | QUIT; | |
241 | continue; | |
242 | } | |
243 | break; | |
244 | } | |
f69f9da1 | 245 | |
95ef7787 PE |
246 | len = dirent_namelen (dp); |
247 | name = finalname = make_unibyte_string (dp->d_name, len); | |
248 | GCPRO2 (finalname, name); | |
249 | ||
250 | /* Note: DECODE_FILE can GC; it should protect its argument, | |
251 | though. */ | |
252 | name = DECODE_FILE (name); | |
253 | len = SBYTES (name); | |
254 | ||
255 | /* Now that we have unwind_protect in place, we might as well | |
256 | allow matching to be interrupted. */ | |
257 | immediate_quit = 1; | |
258 | QUIT; | |
259 | ||
260 | if (NILP (match) | |
908589fd | 261 | || re_search (bufp, SSDATA (name), len, 0, len, 0) >= 0) |
95ef7787 PE |
262 | wanted = 1; |
263 | ||
264 | immediate_quit = 0; | |
265 | ||
266 | if (wanted) | |
14d55bce | 267 | { |
95ef7787 PE |
268 | if (!NILP (full)) |
269 | { | |
270 | Lisp_Object fullname; | |
271 | ptrdiff_t nbytes = len + directory_nbytes + needsep; | |
272 | ptrdiff_t nchars; | |
e23f810c | 273 | |
95ef7787 PE |
274 | fullname = make_uninit_multibyte_string (nbytes, nbytes); |
275 | memcpy (SDATA (fullname), SDATA (directory), | |
276 | directory_nbytes); | |
177c0ea7 | 277 | |
95ef7787 PE |
278 | if (needsep) |
279 | SSET (fullname, directory_nbytes, DIRECTORY_SEP); | |
e23f810c | 280 | |
95ef7787 PE |
281 | memcpy (SDATA (fullname) + directory_nbytes + needsep, |
282 | SDATA (name), len); | |
2488aba5 | 283 | |
95ef7787 | 284 | nchars = chars_in_text (SDATA (fullname), nbytes); |
2488aba5 | 285 | |
95ef7787 PE |
286 | /* Some bug somewhere. */ |
287 | if (nchars > nbytes) | |
288 | emacs_abort (); | |
2488aba5 | 289 | |
95ef7787 PE |
290 | STRING_SET_CHARS (fullname, nchars); |
291 | if (nchars == nbytes) | |
292 | STRING_SET_UNIBYTE (fullname); | |
293 | ||
294 | finalname = fullname; | |
14d55bce | 295 | } |
95ef7787 PE |
296 | else |
297 | finalname = name; | |
388ac098 | 298 | |
95ef7787 PE |
299 | if (attrs) |
300 | { | |
8654f9d7 PE |
301 | Lisp_Object fileattrs |
302 | = file_attributes (fd, dp->d_name, id_format); | |
95ef7787 | 303 | list = Fcons (Fcons (finalname, fileattrs), list); |
95ef7787 PE |
304 | } |
305 | else | |
306 | list = Fcons (finalname, list); | |
14d55bce | 307 | } |
95ef7787 PE |
308 | |
309 | UNGCPRO; | |
14d55bce | 310 | } |
2488aba5 | 311 | |
4d7e6e51 | 312 | block_input (); |
14d55bce | 313 | closedir (d); |
4d7e6e51 | 314 | unblock_input (); |
65156807 EZ |
315 | #ifdef WINDOWSNT |
316 | if (attrs) | |
317 | Vw32_get_true_file_attributes = w32_save; | |
318 | #endif | |
2488aba5 AI |
319 | |
320 | /* Discard the unwind protect. */ | |
321 | specpdl_ptr = specpdl + count; | |
322 | ||
388ac098 GM |
323 | if (NILP (nosort)) |
324 | list = Fsort (Fnreverse (list), | |
325 | attrs ? Qfile_attributes_lessp : Qstring_lessp); | |
177c0ea7 | 326 | |
388ac098 | 327 | RETURN_UNGCPRO (list); |
14d55bce | 328 | } |
4424b255 GV |
329 | |
330 | ||
331 | DEFUN ("directory-files", Fdirectory_files, Sdirectory_files, 1, 4, 0, | |
335c5470 PJ |
332 | doc: /* Return a list of names of files in DIRECTORY. |
333 | There are three optional arguments: | |
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. | |
a489517b JB |
338 | Otherwise, the list returned is sorted with `string-lessp'. |
339 | NOSORT is useful if you plan to sort the result yourself. */) | |
5842a27b | 340 | (Lisp_Object directory, Lisp_Object full, Lisp_Object match, Lisp_Object nosort) |
4424b255 GV |
341 | { |
342 | Lisp_Object handler; | |
4ece81a6 | 343 | directory = Fexpand_file_name (directory, Qnil); |
4424b255 GV |
344 | |
345 | /* If the file name has special constructs in it, | |
346 | call the corresponding file handler. */ | |
347 | handler = Ffind_file_name_handler (directory, Qdirectory_files); | |
348 | if (!NILP (handler)) | |
6b61353c KH |
349 | return call5 (handler, Qdirectory_files, directory, |
350 | full, match, nosort); | |
4424b255 | 351 | |
6b61353c | 352 | return directory_files_internal (directory, full, match, nosort, 0, Qnil); |
4424b255 GV |
353 | } |
354 | ||
335c5470 | 355 | DEFUN ("directory-files-and-attributes", Fdirectory_files_and_attributes, |
6b61353c | 356 | Sdirectory_files_and_attributes, 1, 5, 0, |
335c5470 | 357 | doc: /* Return a list of names of files and their attributes in DIRECTORY. |
6b61353c | 358 | There are four optional arguments: |
335c5470 PJ |
359 | If FULL is non-nil, return absolute file names. Otherwise return names |
360 | that are relative to the specified directory. | |
361 | If MATCH is non-nil, mention only file names that match the regexp MATCH. | |
362 | If NOSORT is non-nil, the list is not sorted--its order is unpredictable. | |
6b61353c KH |
363 | NOSORT is useful if you plan to sort the result yourself. |
364 | ID-FORMAT specifies the preferred format of attributes uid and gid, see | |
6c5665e9 EZ |
365 | `file-attributes' for further documentation. |
366 | On MS-Windows, performance depends on `w32-get-true-file-attributes', | |
367 | which see. */) | |
5842a27b | 368 | (Lisp_Object directory, Lisp_Object full, Lisp_Object match, Lisp_Object nosort, Lisp_Object id_format) |
4424b255 GV |
369 | { |
370 | Lisp_Object handler; | |
4ece81a6 | 371 | directory = Fexpand_file_name (directory, Qnil); |
4424b255 GV |
372 | |
373 | /* If the file name has special constructs in it, | |
374 | call the corresponding file handler. */ | |
375 | handler = Ffind_file_name_handler (directory, Qdirectory_files_and_attributes); | |
376 | if (!NILP (handler)) | |
6b61353c KH |
377 | return call6 (handler, Qdirectory_files_and_attributes, |
378 | directory, full, match, nosort, id_format); | |
4424b255 | 379 | |
6b61353c | 380 | return directory_files_internal (directory, full, match, nosort, 1, id_format); |
4424b255 GV |
381 | } |
382 | ||
14d55bce | 383 | \f |
de1339b0 PE |
384 | static Lisp_Object file_name_completion (Lisp_Object, Lisp_Object, bool, |
385 | Lisp_Object); | |
14d55bce RS |
386 | |
387 | DEFUN ("file-name-completion", Ffile_name_completion, Sfile_name_completion, | |
abfb1932 | 388 | 2, 3, 0, |
335c5470 PJ |
389 | doc: /* Complete file name FILE in directory DIRECTORY. |
390 | Returns the longest string | |
391 | common to all file names in DIRECTORY that start with FILE. | |
392 | If there is only one and FILE matches it exactly, returns t. | |
2f60660a | 393 | Returns nil if DIRECTORY contains no name starting with FILE. |
335c5470 | 394 | |
b6ce54d6 RS |
395 | If PREDICATE is non-nil, call PREDICATE with each possible |
396 | completion (in absolute form) and ignore it if PREDICATE returns nil. | |
397 | ||
335c5470 PJ |
398 | This function ignores some of the possible completions as |
399 | determined by the variable `completion-ignored-extensions', which see. */) | |
5842a27b | 400 | (Lisp_Object file, Lisp_Object directory, Lisp_Object predicate) |
14d55bce | 401 | { |
32f4334d | 402 | Lisp_Object handler; |
32c1fffd | 403 | directory = Fexpand_file_name (directory, Qnil); |
32f4334d | 404 | |
8436e231 | 405 | /* If the directory name has special constructs in it, |
32f4334d | 406 | call the corresponding file handler. */ |
23bd240f | 407 | handler = Ffind_file_name_handler (directory, Qfile_name_completion); |
32f4334d | 408 | if (!NILP (handler)) |
abfb1932 | 409 | return call4 (handler, Qfile_name_completion, file, directory, predicate); |
32f4334d | 410 | |
8436e231 RS |
411 | /* If the file name has special constructs in it, |
412 | call the corresponding file handler. */ | |
413 | handler = Ffind_file_name_handler (file, Qfile_name_completion); | |
414 | if (!NILP (handler)) | |
abfb1932 | 415 | return call4 (handler, Qfile_name_completion, file, directory, predicate); |
8436e231 | 416 | |
de1339b0 | 417 | return file_name_completion (file, directory, 0, predicate); |
14d55bce RS |
418 | } |
419 | ||
420 | DEFUN ("file-name-all-completions", Ffile_name_all_completions, | |
335c5470 PJ |
421 | Sfile_name_all_completions, 2, 2, 0, |
422 | doc: /* Return a list of all completions of file name FILE in directory DIRECTORY. | |
423 | These are all file names in directory DIRECTORY which begin with FILE. */) | |
5842a27b | 424 | (Lisp_Object file, Lisp_Object directory) |
14d55bce | 425 | { |
32f4334d | 426 | Lisp_Object handler; |
32c1fffd | 427 | directory = Fexpand_file_name (directory, Qnil); |
32f4334d | 428 | |
8436e231 | 429 | /* If the directory name has special constructs in it, |
32f4334d | 430 | call the corresponding file handler. */ |
23bd240f | 431 | handler = Ffind_file_name_handler (directory, Qfile_name_all_completions); |
32f4334d | 432 | if (!NILP (handler)) |
23bd240f | 433 | return call3 (handler, Qfile_name_all_completions, file, directory); |
32f4334d | 434 | |
8436e231 RS |
435 | /* If the file name has special constructs in it, |
436 | call the corresponding file handler. */ | |
437 | handler = Ffind_file_name_handler (file, Qfile_name_all_completions); | |
438 | if (!NILP (handler)) | |
23bd240f | 439 | return call3 (handler, Qfile_name_all_completions, file, directory); |
8436e231 | 440 | |
de1339b0 | 441 | return file_name_completion (file, directory, 1, Qnil); |
14d55bce RS |
442 | } |
443 | ||
8654f9d7 | 444 | static int file_name_completion_stat (int, struct dirent *, struct stat *); |
955cbe7b | 445 | static Lisp_Object Qdefault_directory; |
dfcf069d | 446 | |
16390cd2 | 447 | static Lisp_Object |
de1339b0 PE |
448 | file_name_completion (Lisp_Object file, Lisp_Object dirname, bool all_flag, |
449 | Lisp_Object predicate) | |
14d55bce RS |
450 | { |
451 | DIR *d; | |
8654f9d7 | 452 | int fd; |
d311d28c | 453 | ptrdiff_t bestmatchsize = 0; |
14d55bce | 454 | int matchcount = 0; |
abfb1932 RS |
455 | /* If ALL_FLAG is 1, BESTMATCH is the list of all matches, decoded. |
456 | If ALL_FLAG is 0, BESTMATCH is either nil | |
457 | or the best match so far, not decoded. */ | |
14d55bce | 458 | Lisp_Object bestmatch, tem, elt, name; |
24c2a54f RS |
459 | Lisp_Object encoded_file; |
460 | Lisp_Object encoded_dir; | |
14d55bce | 461 | struct stat st; |
59ea14cd | 462 | bool directoryp; |
de1339b0 | 463 | /* If not INCLUDEALL, exclude files in completion-ignored-extensions as |
3271a8f5 SM |
464 | well as "." and "..". Until shown otherwise, assume we can't exclude |
465 | anything. */ | |
de1339b0 | 466 | bool includeall = 1; |
d311d28c | 467 | ptrdiff_t count = SPECPDL_INDEX (); |
24c2a54f | 468 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5; |
3fcc88cc | 469 | |
6bbd7a29 GM |
470 | elt = Qnil; |
471 | ||
b7826503 | 472 | CHECK_STRING (file); |
14d55bce | 473 | |
14d55bce | 474 | bestmatch = Qnil; |
24c2a54f RS |
475 | encoded_file = encoded_dir = Qnil; |
476 | GCPRO5 (file, dirname, bestmatch, encoded_file, encoded_dir); | |
01bb4018 | 477 | specbind (Qdefault_directory, dirname); |
14d55bce | 478 | |
24c2a54f RS |
479 | /* Do completion on the encoded file name |
480 | because the other names in the directory are (we presume) | |
481 | encoded likewise. We decode the completed string at the end. */ | |
2a54a229 SM |
482 | /* Actually, this is not quite true any more: we do most of the completion |
483 | work with decoded file names, but we still do some filtering based | |
484 | on the encoded file name. */ | |
6c8b4f07 | 485 | encoded_file = STRING_MULTIBYTE (file) ? ENCODE_FILE (file) : file; |
24c2a54f | 486 | |
e7ac588e | 487 | encoded_dir = ENCODE_FILE (Fdirectory_file_name (dirname)); |
24c2a54f | 488 | |
e7ac588e | 489 | d = open_directory (SSDATA (encoded_dir), &fd); |
3271a8f5 SM |
490 | if (!d) |
491 | report_file_error ("Opening directory", Fcons (dirname, Qnil)); | |
14d55bce | 492 | |
3271a8f5 | 493 | record_unwind_protect (directory_files_internal_unwind, |
468afbac | 494 | make_save_pointer (d)); |
14d55bce | 495 | |
3271a8f5 SM |
496 | /* Loop reading blocks */ |
497 | /* (att3b compiler bug requires do a null comparison this way) */ | |
498 | while (1) | |
14d55bce | 499 | { |
95ef7787 | 500 | struct dirent *dp; |
d311d28c | 501 | ptrdiff_t len; |
de1339b0 | 502 | bool canexclude = 0; |
14d55bce | 503 | |
3271a8f5 SM |
504 | errno = 0; |
505 | dp = readdir (d); | |
22626a85 PE |
506 | if (!dp) |
507 | { | |
508 | if (errno == EAGAIN || errno == EINTR) | |
509 | { | |
510 | QUIT; | |
511 | continue; | |
512 | } | |
513 | break; | |
514 | } | |
14d55bce | 515 | |
95ef7787 | 516 | len = dirent_namelen (dp); |
14d55bce | 517 | |
3271a8f5 | 518 | QUIT; |
95ef7787 | 519 | if (len < SCHARS (encoded_file) |
7216e43b PE |
520 | || (scmp (dp->d_name, SSDATA (encoded_file), |
521 | SCHARS (encoded_file)) | |
522 | >= 0)) | |
3271a8f5 | 523 | continue; |
14d55bce | 524 | |
8654f9d7 | 525 | if (file_name_completion_stat (fd, dp, &st) < 0) |
3271a8f5 | 526 | continue; |
14d55bce | 527 | |
59ea14cd | 528 | directoryp = S_ISDIR (st.st_mode) != 0; |
3271a8f5 SM |
529 | tem = Qnil; |
530 | /* If all_flag is set, always include all. | |
531 | It would not actually be helpful to the user to ignore any possible | |
532 | completions when making a list of them. */ | |
533 | if (!all_flag) | |
534 | { | |
d311d28c | 535 | ptrdiff_t skip; |
2cd298e2 | 536 | |
7519c40d | 537 | #if 0 /* FIXME: The `scmp' call compares an encoded and a decoded string. */ |
2cd298e2 SM |
538 | /* If this entry matches the current bestmatch, the only |
539 | thing it can do is increase matchcount, so don't bother | |
540 | investigating it any further. */ | |
541 | if (!completion_ignore_case | |
542 | /* The return result depends on whether it's the sole match. */ | |
543 | && matchcount > 1 | |
544 | && !includeall /* This match may allow includeall to 0. */ | |
545 | && len >= bestmatchsize | |
4f043d0f | 546 | && 0 > scmp (dp->d_name, SSDATA (bestmatch), bestmatchsize)) |
2cd298e2 | 547 | continue; |
7519c40d | 548 | #endif |
2cd298e2 | 549 | |
3271a8f5 | 550 | if (directoryp) |
ad456ad4 RS |
551 | { |
552 | #ifndef TRIVIAL_DIRECTORY_ENTRY | |
553 | #define TRIVIAL_DIRECTORY_ENTRY(n) (!strcmp (n, ".") || !strcmp (n, "..")) | |
554 | #endif | |
abfb1932 RS |
555 | /* "." and ".." are never interesting as completions, and are |
556 | actually in the way in a directory with only one file. */ | |
3271a8f5 SM |
557 | if (TRIVIAL_DIRECTORY_ENTRY (dp->d_name)) |
558 | canexclude = 1; | |
559 | else if (len > SCHARS (encoded_file)) | |
d013f29b EZ |
560 | /* Ignore directories if they match an element of |
561 | completion-ignored-extensions which ends in a slash. */ | |
562 | for (tem = Vcompletion_ignored_extensions; | |
563 | CONSP (tem); tem = XCDR (tem)) | |
564 | { | |
d311d28c | 565 | ptrdiff_t elt_len; |
4f043d0f | 566 | char *p1; |
d013f29b EZ |
567 | |
568 | elt = XCAR (tem); | |
569 | if (!STRINGP (elt)) | |
570 | continue; | |
a74aaa9d EZ |
571 | /* Need to encode ELT, since scmp compares unibyte |
572 | strings only. */ | |
573 | elt = ENCODE_FILE (elt); | |
d5db4077 | 574 | elt_len = SCHARS (elt) - 1; /* -1 for trailing / */ |
7a8d465a | 575 | if (elt_len <= 0) |
d013f29b | 576 | continue; |
4f043d0f | 577 | p1 = SSDATA (elt); |
d013f29b EZ |
578 | if (p1[elt_len] != '/') |
579 | continue; | |
580 | skip = len - elt_len; | |
581 | if (skip < 0) | |
582 | continue; | |
583 | ||
908589fd | 584 | if (scmp (dp->d_name + skip, p1, elt_len) >= 0) |
d013f29b EZ |
585 | continue; |
586 | break; | |
587 | } | |
ad456ad4 RS |
588 | } |
589 | else | |
3271a8f5 | 590 | { |
14d55bce RS |
591 | /* Compare extensions-to-be-ignored against end of this file name */ |
592 | /* if name is not an exact match against specified string */ | |
3271a8f5 | 593 | if (len > SCHARS (encoded_file)) |
14d55bce RS |
594 | /* and exit this for loop if a match is found */ |
595 | for (tem = Vcompletion_ignored_extensions; | |
70949dac | 596 | CONSP (tem); tem = XCDR (tem)) |
14d55bce | 597 | { |
70949dac | 598 | elt = XCAR (tem); |
88cf1852 | 599 | if (!STRINGP (elt)) continue; |
a74aaa9d EZ |
600 | /* Need to encode ELT, since scmp compares unibyte |
601 | strings only. */ | |
602 | elt = ENCODE_FILE (elt); | |
d5db4077 | 603 | skip = len - SCHARS (elt); |
14d55bce RS |
604 | if (skip < 0) continue; |
605 | ||
908589fd AS |
606 | if (scmp (dp->d_name + skip, SSDATA (elt), SCHARS (elt)) |
607 | >= 0) | |
14d55bce RS |
608 | continue; |
609 | break; | |
610 | } | |
611 | } | |
612 | ||
f676868d KH |
613 | /* If an ignored-extensions match was found, |
614 | don't process this name as a completion. */ | |
3271a8f5 SM |
615 | if (CONSP (tem)) |
616 | canexclude = 1; | |
f676868d | 617 | |
3271a8f5 SM |
618 | if (!includeall && canexclude) |
619 | /* We're not including all files and this file can be excluded. */ | |
620 | continue; | |
9c691c00 | 621 | |
3271a8f5 SM |
622 | if (includeall && !canexclude) |
623 | { /* If we have one non-excludable file, we want to exclude the | |
4c36be58 | 624 | excludable files. */ |
3271a8f5 SM |
625 | includeall = 0; |
626 | /* Throw away any previous excludable match found. */ | |
627 | bestmatch = Qnil; | |
628 | bestmatchsize = 0; | |
629 | matchcount = 0; | |
f676868d | 630 | } |
3271a8f5 SM |
631 | } |
632 | /* FIXME: If we move this `decode' earlier we can eliminate | |
633 | the repeated ENCODE_FILE on Vcompletion_ignored_extensions. */ | |
634 | name = make_unibyte_string (dp->d_name, len); | |
635 | name = DECODE_FILE (name); | |
636 | ||
637 | { | |
638 | Lisp_Object regexps; | |
3271a8f5 SM |
639 | |
640 | /* Ignore this element if it fails to match all the regexps. */ | |
cc524e3b CY |
641 | if (completion_ignore_case) |
642 | { | |
643 | for (regexps = Vcompletion_regexp_list; CONSP (regexps); | |
644 | regexps = XCDR (regexps)) | |
645 | if (fast_string_match_ignore_case (XCAR (regexps), name) < 0) | |
646 | break; | |
647 | } | |
648 | else | |
649 | { | |
650 | for (regexps = Vcompletion_regexp_list; CONSP (regexps); | |
651 | regexps = XCDR (regexps)) | |
652 | if (fast_string_match (XCAR (regexps), name) < 0) | |
653 | break; | |
654 | } | |
655 | ||
3271a8f5 SM |
656 | if (CONSP (regexps)) |
657 | continue; | |
658 | } | |
659 | ||
660 | /* This is a possible completion */ | |
661 | if (directoryp) | |
662 | /* This completion is a directory; make it end with '/'. */ | |
663 | name = Ffile_name_as_directory (name); | |
664 | ||
665 | /* Test the predicate, if any. */ | |
666 | if (!NILP (predicate)) | |
667 | { | |
668 | Lisp_Object val; | |
dbf31225 | 669 | struct gcpro gcpro1; |
14d55bce | 670 | |
dbf31225 | 671 | GCPRO1 (name); |
3271a8f5 | 672 | val = call1 (predicate, name); |
dbf31225 | 673 | UNGCPRO; |
c4c52bb7 | 674 | |
3271a8f5 SM |
675 | if (NILP (val)) |
676 | continue; | |
677 | } | |
abfb1932 | 678 | |
3271a8f5 | 679 | /* Suitably record this match. */ |
14d55bce | 680 | |
d311d28c | 681 | matchcount += matchcount <= 1; |
f676868d | 682 | |
3271a8f5 SM |
683 | if (all_flag) |
684 | bestmatch = Fcons (name, bestmatch); | |
685 | else if (NILP (bestmatch)) | |
686 | { | |
687 | bestmatch = name; | |
688 | bestmatchsize = SCHARS (name); | |
689 | } | |
690 | else | |
691 | { | |
692 | Lisp_Object zero = make_number (0); | |
693 | /* FIXME: This is a copy of the code in Ftry_completion. */ | |
d311d28c | 694 | ptrdiff_t compare = min (bestmatchsize, SCHARS (name)); |
38b2c076 | 695 | Lisp_Object cmp |
3271a8f5 SM |
696 | = Fcompare_strings (bestmatch, zero, |
697 | make_number (compare), | |
698 | name, zero, | |
699 | make_number (compare), | |
700 | completion_ignore_case ? Qt : Qnil); | |
71376d4b | 701 | ptrdiff_t matchsize = EQ (cmp, Qt) ? compare : eabs (XINT (cmp)) - 1; |
3271a8f5 SM |
702 | |
703 | if (completion_ignore_case) | |
f676868d | 704 | { |
3271a8f5 SM |
705 | /* If this is an exact match except for case, |
706 | use it as the best match rather than one that is not | |
707 | an exact match. This way, we get the case pattern | |
708 | of the actual match. */ | |
709 | /* This tests that the current file is an exact match | |
710 | but BESTMATCH is not (it is too long). */ | |
711 | if ((matchsize == SCHARS (name) | |
59ea14cd | 712 | && matchsize + directoryp < SCHARS (bestmatch)) |
3271a8f5 SM |
713 | || |
714 | /* If there is no exact match ignoring case, | |
715 | prefer a match that does not change the case | |
716 | of the input. */ | |
717 | /* If there is more than one exact match aside from | |
718 | case, and one of them is exact including case, | |
719 | prefer that one. */ | |
720 | /* This == checks that, of current file and BESTMATCH, | |
721 | either both or neither are exact. */ | |
722 | (((matchsize == SCHARS (name)) | |
723 | == | |
59ea14cd | 724 | (matchsize + directoryp == SCHARS (bestmatch))) |
38b2c076 | 725 | && (cmp = Fcompare_strings (name, zero, |
3271a8f5 SM |
726 | make_number (SCHARS (file)), |
727 | file, zero, | |
728 | Qnil, | |
729 | Qnil), | |
38b2c076 PE |
730 | EQ (Qt, cmp)) |
731 | && (cmp = Fcompare_strings (bestmatch, zero, | |
3271a8f5 SM |
732 | make_number (SCHARS (file)), |
733 | file, zero, | |
734 | Qnil, | |
735 | Qnil), | |
38b2c076 | 736 | ! EQ (Qt, cmp)))) |
3271a8f5 | 737 | bestmatch = name; |
14d55bce | 738 | } |
3271a8f5 | 739 | bestmatchsize = matchsize; |
2cd298e2 SM |
740 | |
741 | /* If the best completion so far is reduced to the string | |
742 | we're trying to complete, then we already know there's no | |
743 | other completion, so there's no point looking any further. */ | |
744 | if (matchsize <= SCHARS (file) | |
745 | && !includeall /* A future match may allow includeall to 0. */ | |
746 | /* If completion-ignore-case is non-nil, don't | |
747 | short-circuit because we want to find the best | |
748 | possible match *including* case differences. */ | |
749 | && (!completion_ignore_case || matchsize == 0) | |
750 | /* The return value depends on whether it's the sole match. */ | |
751 | && matchcount > 1) | |
752 | break; | |
753 | ||
14d55bce | 754 | } |
14d55bce RS |
755 | } |
756 | ||
3fcc88cc | 757 | UNGCPRO; |
3271a8f5 | 758 | /* This closes the directory. */ |
c3a3229c | 759 | bestmatch = unbind_to (count, bestmatch); |
14d55bce | 760 | |
265a9e55 | 761 | if (all_flag || NILP (bestmatch)) |
2a54a229 | 762 | return bestmatch; |
928b5acc SM |
763 | /* Return t if the supplied string is an exact match (counting case); |
764 | it does not require any change to be made. */ | |
765 | if (matchcount == 1 && !NILP (Fequal (bestmatch, file))) | |
14d55bce | 766 | return Qt; |
24c2a54f RS |
767 | bestmatch = Fsubstring (bestmatch, make_number (0), |
768 | make_number (bestmatchsize)); | |
24c2a54f | 769 | return bestmatch; |
14d55bce RS |
770 | } |
771 | ||
b3f04ced RS |
772 | /* Compare exactly LEN chars of strings at S1 and S2, |
773 | ignoring case if appropriate. | |
774 | Return -1 if strings match, | |
775 | else number of chars that match at the beginning. */ | |
776 | ||
d311d28c PE |
777 | static ptrdiff_t |
778 | scmp (const char *s1, const char *s2, ptrdiff_t len) | |
b3f04ced | 779 | { |
d311d28c | 780 | register ptrdiff_t l = len; |
b3f04ced RS |
781 | |
782 | if (completion_ignore_case) | |
783 | { | |
4f043d0f | 784 | while (l |
5da9919f PE |
785 | && (downcase ((unsigned char) *s1++) |
786 | == downcase ((unsigned char) *s2++))) | |
b3f04ced RS |
787 | l--; |
788 | } | |
789 | else | |
790 | { | |
791 | while (l && *s1++ == *s2++) | |
792 | l--; | |
793 | } | |
794 | if (l == 0) | |
795 | return -1; | |
796 | else | |
797 | return len - l; | |
798 | } | |
799 | ||
dfcf069d | 800 | static int |
8654f9d7 | 801 | file_name_completion_stat (int fd, struct dirent *dp, struct stat *st_addr) |
14d55bce | 802 | { |
7e3cf34f | 803 | int value; |
14d55bce | 804 | |
04924ee3 | 805 | #ifdef MSDOS |
04924ee3 RS |
806 | /* Some fields of struct stat are *very* expensive to compute on MS-DOS, |
807 | but aren't required here. Avoid computing the following fields: | |
808 | st_inode, st_size and st_nlink for directories, and the execute bits | |
809 | in st_mode for non-directory files with non-standard extensions. */ | |
810 | ||
811 | unsigned short save_djstat_flags = _djstat_flags; | |
812 | ||
813 | _djstat_flags = _STAT_INODE | _STAT_EXEC_MAGIC | _STAT_DIRSIZE; | |
04924ee3 RS |
814 | #endif /* MSDOS */ |
815 | ||
7e3cf34f RS |
816 | /* We want to return success if a link points to a nonexistent file, |
817 | but we want to return the status for what the link points to, | |
818 | in case it is a directory. */ | |
8654f9d7 | 819 | value = fstatat (fd, dp->d_name, st_addr, AT_SYMLINK_NOFOLLOW); |
f68c809d | 820 | if (value == 0 && S_ISLNK (st_addr->st_mode)) |
8654f9d7 | 821 | fstatat (fd, dp->d_name, st_addr, 0); |
04924ee3 | 822 | #ifdef MSDOS |
04924ee3 | 823 | _djstat_flags = save_djstat_flags; |
04924ee3 RS |
824 | #endif /* MSDOS */ |
825 | return value; | |
14d55bce RS |
826 | } |
827 | \f | |
8aaaec6b EZ |
828 | static char * |
829 | stat_uname (struct stat *st) | |
830 | { | |
831 | #ifdef WINDOWSNT | |
832 | return st->st_uname; | |
833 | #else | |
350e0088 | 834 | struct passwd *pw = getpwuid (st->st_uid); |
8aaaec6b EZ |
835 | |
836 | if (pw) | |
837 | return pw->pw_name; | |
838 | else | |
839 | return NULL; | |
840 | #endif | |
841 | } | |
842 | ||
843 | static char * | |
844 | stat_gname (struct stat *st) | |
845 | { | |
846 | #ifdef WINDOWSNT | |
847 | return st->st_gname; | |
848 | #else | |
350e0088 | 849 | struct group *gr = getgrgid (st->st_gid); |
8aaaec6b EZ |
850 | |
851 | if (gr) | |
852 | return gr->gr_name; | |
853 | else | |
854 | return NULL; | |
855 | #endif | |
856 | } | |
857 | ||
6b61353c | 858 | DEFUN ("file-attributes", Ffile_attributes, Sfile_attributes, 1, 2, 0, |
335c5470 PJ |
859 | doc: /* Return a list of attributes of file FILENAME. |
860 | Value is nil if specified file cannot be opened. | |
6b61353c KH |
861 | |
862 | ID-FORMAT specifies the preferred format of attributes uid and gid (see | |
e42cd1a7 JB |
863 | below) - valid values are 'string and 'integer. The latter is the |
864 | default, but we plan to change that, so you should specify a non-nil value | |
865 | for ID-FORMAT if you use the returned uid or gid. | |
6b61353c KH |
866 | |
867 | Elements of the attribute list are: | |
335c5470 PJ |
868 | 0. t for directory, string (name linked to) for symbolic link, or nil. |
869 | 1. Number of links to file. | |
78e7d1fe EZ |
870 | 2. File uid as a string or a number. If a string value cannot be |
871 | looked up, a numeric value, either an integer or a float, is returned. | |
6b61353c | 872 | 3. File gid, likewise. |
d35af63c PE |
873 | 4. Last access time, as a list of integers (HIGH LOW USEC PSEC) in the |
874 | same style as (current-time). | |
e02131a2 EZ |
875 | (See a note below about access time on FAT-based filesystems.) |
876 | 5. Last modification time, likewise. This is the time of the last | |
877 | change to the file's contents. | |
878 | 6. Last status change time, likewise. This is the time of last change | |
879 | to the file's attributes: owner and group, access mode bits, etc. | |
335c5470 PJ |
880 | 7. Size in bytes. |
881 | This is a floating point number if the size is too large for an integer. | |
882 | 8. File modes, as a string of ten letters or dashes as in ls -l. | |
97976f9f | 883 | 9. An unspecified value, present only for backward compatibility. |
be44ca6c PE |
884 | 10. inode number. If it is larger than what an Emacs integer can hold, |
885 | this is of the form (HIGH . LOW): first the high bits, then the low 16 bits. | |
886 | If even HIGH is too large for an Emacs integer, this is instead of the form | |
887 | (HIGH MIDDLE . LOW): first the high bits, then the middle 24 bits, | |
e02131a2 EZ |
888 | and finally the low 16 bits. |
889 | 11. Filesystem device number. If it is larger than what the Emacs | |
890 | integer can hold, this is a cons cell, similar to the inode number. | |
891 | ||
892 | On most filesystems, the combination of the inode and the device | |
893 | number uniquely identifies the file. | |
6c5665e9 EZ |
894 | |
895 | On MS-Windows, performance depends on `w32-get-true-file-attributes', | |
21f73755 EZ |
896 | which see. |
897 | ||
898 | On some FAT-based filesystems, only the date of last access is recorded, | |
899 | so last access time will always be midnight of that day. */) | |
5842a27b | 900 | (Lisp_Object filename, Lisp_Object id_format) |
14d55bce | 901 | { |
24c2a54f | 902 | Lisp_Object encoded; |
32f4334d | 903 | Lisp_Object handler; |
14d55bce RS |
904 | |
905 | filename = Fexpand_file_name (filename, Qnil); | |
32f4334d RS |
906 | |
907 | /* If the file name has special constructs in it, | |
908 | call the corresponding file handler. */ | |
a617e913 | 909 | handler = Ffind_file_name_handler (filename, Qfile_attributes); |
32f4334d | 910 | if (!NILP (handler)) |
6b61353c KH |
911 | { /* Only pass the extra arg if it is used to help backward compatibility |
912 | with old file handlers which do not implement the new arg. --Stef */ | |
913 | if (NILP (id_format)) | |
914 | return call2 (handler, Qfile_attributes, filename); | |
915 | else | |
916 | return call3 (handler, Qfile_attributes, filename, id_format); | |
917 | } | |
32f4334d | 918 | |
24c2a54f | 919 | encoded = ENCODE_FILE (filename); |
8654f9d7 PE |
920 | return file_attributes (AT_FDCWD, SSDATA (encoded), id_format); |
921 | } | |
922 | ||
923 | static Lisp_Object | |
924 | file_attributes (int fd, char const *name, Lisp_Object id_format) | |
925 | { | |
926 | Lisp_Object values[12]; | |
927 | struct stat s; | |
928 | int lstat_result; | |
929 | ||
930 | /* An array to hold the mode string generated by filemodestring, | |
931 | including its terminating space and null byte. */ | |
932 | char modes[sizeof "-rwxr-xr-x "]; | |
933 | ||
934 | char *uname = NULL, *gname = NULL; | |
24c2a54f | 935 | |
5c207910 EZ |
936 | #ifdef WINDOWSNT |
937 | /* We usually don't request accurate owner and group info, because | |
938 | it can be very expensive on Windows to get that, and most callers | |
939 | of 'lstat' don't need that. But here we do want that information | |
940 | to be accurate. */ | |
941 | w32_stat_get_owner_group = 1; | |
942 | #endif | |
943 | ||
8654f9d7 | 944 | lstat_result = fstatat (fd, name, &s, AT_SYMLINK_NOFOLLOW); |
5c207910 EZ |
945 | |
946 | #ifdef WINDOWSNT | |
947 | w32_stat_get_owner_group = 0; | |
948 | #endif | |
949 | ||
950 | if (lstat_result < 0) | |
14d55bce RS |
951 | return Qnil; |
952 | ||
8654f9d7 | 953 | values[0] = (S_ISLNK (s.st_mode) ? emacs_readlinkat (fd, name) |
8d40723d | 954 | : S_ISDIR (s.st_mode) ? Qt : Qnil); |
14d55bce | 955 | values[1] = make_number (s.st_nlink); |
51105b13 EZ |
956 | |
957 | if (!(NILP (id_format) || EQ (id_format, Qinteger))) | |
6b61353c | 958 | { |
4d7e6e51 | 959 | block_input (); |
8aaaec6b | 960 | uname = stat_uname (&s); |
8aaaec6b | 961 | gname = stat_gname (&s); |
4d7e6e51 | 962 | unblock_input (); |
6b61353c | 963 | } |
51105b13 | 964 | if (uname) |
80904120 | 965 | values[2] = DECODE_SYSTEM (build_string (uname)); |
51105b13 | 966 | else |
58a12889 | 967 | values[2] = make_fixnum_or_float (s.st_uid); |
51105b13 | 968 | if (gname) |
80904120 | 969 | values[3] = DECODE_SYSTEM (build_string (gname)); |
51105b13 | 970 | else |
58a12889 | 971 | values[3] = make_fixnum_or_float (s.st_gid); |
51105b13 | 972 | |
d35af63c PE |
973 | values[4] = make_lisp_time (get_stat_atime (&s)); |
974 | values[5] = make_lisp_time (get_stat_mtime (&s)); | |
975 | values[6] = make_lisp_time (get_stat_ctime (&s)); | |
83c77d31 PE |
976 | |
977 | /* If the file size is a 4-byte type, assume that files of sizes in | |
978 | the 2-4 GiB range wrap around to negative values, as this is a | |
979 | common bug on older 32-bit platforms. */ | |
980 | if (sizeof (s.st_size) == 4) | |
981 | values[7] = make_fixnum_or_float (s.st_size & 0xffffffffu); | |
982 | else | |
983 | values[7] = make_fixnum_or_float (s.st_size); | |
4bc12672 | 984 | |
14d55bce RS |
985 | filemodestring (&s, modes); |
986 | values[8] = make_string (modes, 10); | |
97976f9f | 987 | values[9] = Qt; |
be44ca6c PE |
988 | values[10] = INTEGER_TO_CONS (s.st_ino); |
989 | values[11] = INTEGER_TO_CONS (s.st_dev); | |
68c45bf0 | 990 | |
5e617bc2 | 991 | return Flist (sizeof (values) / sizeof (values[0]), values); |
14d55bce | 992 | } |
4424b255 GV |
993 | |
994 | DEFUN ("file-attributes-lessp", Ffile_attributes_lessp, Sfile_attributes_lessp, 2, 2, 0, | |
335c5470 PJ |
995 | doc: /* Return t if first arg file attributes list is less than second. |
996 | Comparison is in lexicographic order and case is significant. */) | |
5842a27b | 997 | (Lisp_Object f1, Lisp_Object f2) |
4424b255 GV |
998 | { |
999 | return Fstring_lessp (Fcar (f1), Fcar (f2)); | |
1000 | } | |
14d55bce | 1001 | \f |
316411f0 DA |
1002 | |
1003 | DEFUN ("system-users", Fsystem_users, Ssystem_users, 0, 0, 0, | |
1004 | doc: /* Return a list of user names currently registered in the system. | |
e5a36063 GM |
1005 | If we don't know how to determine that on this platform, just |
1006 | return a list with one element, taken from `user-real-login-name'. */) | |
316411f0 DA |
1007 | (void) |
1008 | { | |
1009 | Lisp_Object users = Qnil; | |
aba027e8 | 1010 | #if defined HAVE_GETPWENT && defined HAVE_ENDPWENT |
316411f0 DA |
1011 | struct passwd *pw; |
1012 | ||
1013 | while ((pw = getpwent ())) | |
1014 | users = Fcons (DECODE_SYSTEM (build_string (pw->pw_name)), users); | |
1015 | ||
1016 | endpwent (); | |
1017 | #endif | |
1018 | if (EQ (users, Qnil)) | |
1019 | /* At least current user is always known. */ | |
1020 | users = Fcons (Vuser_real_login_name, Qnil); | |
1021 | return users; | |
1022 | } | |
1023 | ||
1024 | DEFUN ("system-groups", Fsystem_groups, Ssystem_groups, 0, 0, 0, | |
1025 | doc: /* Return a list of user group names currently registered in the system. | |
1026 | The value may be nil if not supported on this platform. */) | |
1027 | (void) | |
1028 | { | |
1029 | Lisp_Object groups = Qnil; | |
aba027e8 | 1030 | #if defined HAVE_GETGRENT && defined HAVE_ENDGRENT |
316411f0 | 1031 | struct group *gr; |
316411f0 DA |
1032 | |
1033 | while ((gr = getgrent ())) | |
1034 | groups = Fcons (DECODE_SYSTEM (build_string (gr->gr_name)), groups); | |
1035 | ||
1036 | endgrent (); | |
1037 | #endif | |
1038 | return groups; | |
1039 | } | |
1040 | ||
dfcf069d | 1041 | void |
971de7fb | 1042 | syms_of_dired (void) |
14d55bce | 1043 | { |
cd3520a4 JB |
1044 | DEFSYM (Qdirectory_files, "directory-files"); |
1045 | DEFSYM (Qdirectory_files_and_attributes, "directory-files-and-attributes"); | |
1046 | DEFSYM (Qfile_name_completion, "file-name-completion"); | |
1047 | DEFSYM (Qfile_name_all_completions, "file-name-all-completions"); | |
1048 | DEFSYM (Qfile_attributes, "file-attributes"); | |
1049 | DEFSYM (Qfile_attributes_lessp, "file-attributes-lessp"); | |
1050 | DEFSYM (Qdefault_directory, "default-directory"); | |
a2d3836c | 1051 | |
14d55bce | 1052 | defsubr (&Sdirectory_files); |
4424b255 | 1053 | defsubr (&Sdirectory_files_and_attributes); |
14d55bce | 1054 | defsubr (&Sfile_name_completion); |
14d55bce RS |
1055 | defsubr (&Sfile_name_all_completions); |
1056 | defsubr (&Sfile_attributes); | |
4424b255 | 1057 | defsubr (&Sfile_attributes_lessp); |
316411f0 DA |
1058 | defsubr (&Ssystem_users); |
1059 | defsubr (&Ssystem_groups); | |
14d55bce | 1060 | |
29208e82 | 1061 | DEFVAR_LISP ("completion-ignored-extensions", Vcompletion_ignored_extensions, |
407a52c4 LT |
1062 | doc: /* Completion ignores file names ending in any string in this list. |
1063 | It does not ignore them if all possible completions end in one of | |
1064 | these strings or when displaying a list of completions. | |
1065 | It ignores directory names if they match any string in this list which | |
1066 | ends in a slash. */); | |
14d55bce RS |
1067 | Vcompletion_ignored_extensions = Qnil; |
1068 | } |