Commit | Line | Data |
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14d55bce | 1 | /* Lisp functions for making directory listings. |
0b5538bd | 2 | Copyright (C) 1985, 1986, 1993, 1994, 1999, 2000, 2001, 2002, 2003, |
114f9c96 | 3 | 2004, 2005, 2006, 2007, 2008, 2009, 2010 Free Software 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> | |
d7306fe6 | 26 | #include <setjmp.h> |
14d55bce | 27 | |
5b9c0a1d | 28 | #ifdef HAVE_PWD_H |
6b61353c | 29 | #include <pwd.h> |
5b9c0a1d | 30 | #endif |
6b61353c | 31 | #include <grp.h> |
6b61353c | 32 | |
7cc9f69f | 33 | #include <errno.h> |
68c45bf0 | 34 | |
dfcf069d AS |
35 | #ifdef HAVE_UNISTD_H |
36 | #include <unistd.h> | |
37 | #endif | |
38 | ||
d6717cdb JB |
39 | /* The d_nameln member of a struct dirent includes the '\0' character |
40 | on some systems, but not on others. What's worse, you can't tell | |
41 | at compile-time which one it will be, since it really depends on | |
42 | the sort of system providing the filesystem you're reading from, | |
43 | not the system you are running on. Paul Eggert | |
44 | <eggert@bi.twinsun.com> says this occurs when Emacs is running on a | |
45 | SunOS 4.1.2 host, reading a directory that is remote-mounted from a | |
46 | Solaris 2.1 host and is in a native Solaris 2.1 filesystem. | |
47 | ||
48 | Since applying strlen to the name always works, we'll just do that. */ | |
49 | #define NAMLEN(p) strlen (p->d_name) | |
50 | ||
1c97e857 | 51 | #ifdef HAVE_DIRENT_H |
14d55bce RS |
52 | |
53 | #include <dirent.h> | |
54 | #define DIRENTRY struct dirent | |
14d55bce | 55 | |
1c97e857 | 56 | #else /* not HAVE_DIRENT_H */ |
14d55bce | 57 | |
14d55bce | 58 | #include <sys/dir.h> |
851cab13 DL |
59 | #include <sys/stat.h> |
60 | ||
14d55bce | 61 | #define DIRENTRY struct direct |
14d55bce | 62 | |
361358ea JB |
63 | extern DIR *opendir (char *); |
64 | extern struct direct *readdir (DIR *); | |
14d55bce | 65 | |
1c97e857 | 66 | #endif /* HAVE_DIRENT_H */ |
128ecc89 | 67 | |
9f8c08a7 | 68 | #ifdef MSDOS |
128ecc89 RS |
69 | #define DIRENTRY_NONEMPTY(p) ((p)->d_name[0] != 0) |
70 | #else | |
71 | #define DIRENTRY_NONEMPTY(p) ((p)->d_ino) | |
14d55bce RS |
72 | #endif |
73 | ||
14d55bce | 74 | #include "lisp.h" |
fa8459a3 | 75 | #include "systime.h" |
14d55bce RS |
76 | #include "buffer.h" |
77 | #include "commands.h" | |
d2f6dae8 | 78 | #include "character.h" |
bd33479f KH |
79 | #include "charset.h" |
80 | #include "coding.h" | |
14d55bce | 81 | #include "regex.h" |
8c8a7c58 | 82 | #include "blockinput.h" |
14d55bce | 83 | |
a11889ab JB |
84 | /* Returns a search buffer, with a fastmap allocated and ready to go. */ |
85 | extern struct re_pattern_buffer *compile_pattern (Lisp_Object, | |
86 | struct re_registers *, | |
87 | Lisp_Object, int, int); | |
88 | ||
851cab13 | 89 | /* From filemode.c. Can't go in Lisp.h because of `stat'. */ |
f57e2426 | 90 | extern void filemodestring (struct stat *, char *); |
851cab13 | 91 | |
14d55bce RS |
92 | /* if system does not have symbolic links, it does not have lstat. |
93 | In that case, use ordinary stat instead. */ | |
94 | ||
95 | #ifndef S_IFLNK | |
96 | #define lstat stat | |
97 | #endif | |
98 | ||
65156807 | 99 | extern Lisp_Object Vw32_get_true_file_attributes; |
ccbcf979 | 100 | |
14d55bce | 101 | Lisp_Object Vcompletion_ignored_extensions; |
32f4334d | 102 | Lisp_Object Qdirectory_files; |
4424b255 | 103 | Lisp_Object Qdirectory_files_and_attributes; |
32f4334d RS |
104 | Lisp_Object Qfile_name_completion; |
105 | Lisp_Object Qfile_name_all_completions; | |
434e6714 | 106 | Lisp_Object Qfile_attributes; |
4424b255 | 107 | Lisp_Object Qfile_attributes_lessp; |
b3f04ced | 108 | |
eec47d6b | 109 | static int scmp (const unsigned char *, const unsigned char *, int); |
14d55bce | 110 | \f |
65156807 EZ |
111 | #ifdef WINDOWSNT |
112 | Lisp_Object | |
113 | directory_files_internal_w32_unwind (Lisp_Object arg) | |
114 | { | |
115 | Vw32_get_true_file_attributes = arg; | |
116 | return Qnil; | |
117 | } | |
118 | #endif | |
2488aba5 AI |
119 | |
120 | Lisp_Object | |
971de7fb | 121 | directory_files_internal_unwind (Lisp_Object dh) |
2488aba5 | 122 | { |
9d291bdf | 123 | DIR *d = (DIR *) XSAVE_VALUE (dh)->pointer; |
d15b573e | 124 | BLOCK_INPUT; |
2488aba5 | 125 | closedir (d); |
d15b573e | 126 | UNBLOCK_INPUT; |
2488aba5 AI |
127 | return Qnil; |
128 | } | |
129 | ||
177c0ea7 | 130 | /* Function shared by Fdirectory_files and Fdirectory_files_and_attributes. |
4424b255 | 131 | When ATTRS is zero, return a list of directory filenames; when |
6b61353c KH |
132 | non-zero, return a list of directory filenames and their attributes. |
133 | In the latter case, ID_FORMAT is passed to Ffile_attributes. */ | |
f69f9da1 | 134 | |
4424b255 | 135 | Lisp_Object |
971de7fb | 136 | directory_files_internal (Lisp_Object directory, Lisp_Object full, Lisp_Object match, Lisp_Object nosort, int attrs, Lisp_Object id_format) |
14d55bce RS |
137 | { |
138 | DIR *d; | |
388ac098 GM |
139 | int directory_nbytes; |
140 | Lisp_Object list, dirfilename, encoded_directory; | |
6bbd7a29 | 141 | struct re_pattern_buffer *bufp = NULL; |
96d64004 | 142 | int needsep = 0; |
aed13378 | 143 | int count = SPECPDL_INDEX (); |
388ac098 | 144 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5; |
8e42f043 | 145 | DIRENTRY *dp; |
65156807 EZ |
146 | #ifdef WINDOWSNT |
147 | Lisp_Object w32_save = Qnil; | |
148 | #endif | |
32f4334d | 149 | |
96d64004 | 150 | /* Because of file name handlers, these functions might call |
6155fae1 | 151 | Ffuncall, and cause a GC. */ |
388ac098 GM |
152 | list = encoded_directory = dirfilename = Qnil; |
153 | GCPRO5 (match, directory, list, dirfilename, encoded_directory); | |
96d64004 | 154 | dirfilename = Fdirectory_file_name (directory); |
6155fae1 | 155 | |
265a9e55 | 156 | if (!NILP (match)) |
14d55bce | 157 | { |
b7826503 | 158 | CHECK_STRING (match); |
ebb9e16f JB |
159 | |
160 | /* MATCH might be a flawed regular expression. Rather than | |
8e6208c5 | 161 | catching and signaling our own errors, we just call |
ebb9e16f | 162 | compile_pattern to do the work for us. */ |
c872c6b2 RS |
163 | /* Pass 1 for the MULTIBYTE arg |
164 | because we do make multibyte strings if the contents warrant. */ | |
1a9fbabe EZ |
165 | # ifdef WINDOWSNT |
166 | /* Windows users want case-insensitive wildcards. */ | |
167 | bufp = compile_pattern (match, 0, | |
168 | buffer_defaults.case_canon_table, 0, 1); | |
169 | # else /* !WINDOWSNT */ | |
3e937712 | 170 | bufp = compile_pattern (match, 0, Qnil, 0, 1); |
1a9fbabe | 171 | # endif /* !WINDOWSNT */ |
14d55bce RS |
172 | } |
173 | ||
b3edfc9b | 174 | /* Note: ENCODE_FILE and DECODE_FILE can GC because they can run |
388ac098 GM |
175 | run_pre_post_conversion_on_str which calls Lisp directly and |
176 | indirectly. */ | |
6c8b4f07 SM |
177 | if (STRING_MULTIBYTE (dirfilename)) |
178 | dirfilename = ENCODE_FILE (dirfilename); | |
179 | encoded_directory = (STRING_MULTIBYTE (directory) | |
180 | ? ENCODE_FILE (directory) : directory); | |
24c2a54f | 181 | |
e50c66d3 | 182 | /* Now *bufp is the compiled form of MATCH; don't call anything |
6155fae1 JB |
183 | which might compile a new regexp until we're done with the loop! */ |
184 | ||
d15b573e | 185 | BLOCK_INPUT; |
d5db4077 | 186 | d = opendir (SDATA (dirfilename)); |
d15b573e | 187 | UNBLOCK_INPUT; |
388ac098 | 188 | if (d == NULL) |
23bd240f | 189 | report_file_error ("Opening directory", Fcons (directory, Qnil)); |
14d55bce | 190 | |
2488aba5 AI |
191 | /* Unfortunately, we can now invoke expand-file-name and |
192 | file-attributes on filenames, both of which can throw, so we must | |
193 | do a proper unwind-protect. */ | |
194 | record_unwind_protect (directory_files_internal_unwind, | |
9d291bdf | 195 | make_save_value (d, 0)); |
2488aba5 | 196 | |
65156807 EZ |
197 | #ifdef WINDOWSNT |
198 | if (attrs) | |
199 | { | |
65156807 EZ |
200 | extern int is_slow_fs (const char *); |
201 | ||
202 | /* Do this only once to avoid doing it (in w32.c:stat) for each | |
203 | file in the directory, when we call Ffile_attributes below. */ | |
204 | record_unwind_protect (directory_files_internal_w32_unwind, | |
205 | Vw32_get_true_file_attributes); | |
206 | w32_save = Vw32_get_true_file_attributes; | |
207 | if (EQ (Vw32_get_true_file_attributes, Qlocal)) | |
208 | { | |
65156807 EZ |
209 | /* w32.c:stat will notice these bindings and avoid calling |
210 | GetDriveType for each file. */ | |
b6046155 | 211 | if (is_slow_fs (SDATA (dirfilename))) |
65156807 EZ |
212 | Vw32_get_true_file_attributes = Qnil; |
213 | else | |
214 | Vw32_get_true_file_attributes = Qt; | |
215 | } | |
216 | } | |
217 | #endif | |
218 | ||
d5db4077 | 219 | directory_nbytes = SBYTES (directory); |
c81a9bdc | 220 | re_match_object = Qt; |
14d55bce | 221 | |
96d64004 | 222 | /* Decide whether we need to add a directory separator. */ |
388ac098 | 223 | if (directory_nbytes == 0 |
d5db4077 | 224 | || !IS_ANY_SEP (SREF (directory, directory_nbytes - 1))) |
96d64004 | 225 | needsep = 1; |
96d64004 | 226 | |
8e42f043 | 227 | /* Loop reading blocks until EOF or error. */ |
f69f9da1 | 228 | for (;;) |
14d55bce | 229 | { |
f69f9da1 GM |
230 | errno = 0; |
231 | dp = readdir (d); | |
232 | ||
9d291bdf | 233 | if (dp == NULL && (0 |
f69f9da1 | 234 | #ifdef EAGAIN |
9d291bdf SM |
235 | || errno == EAGAIN |
236 | #endif | |
237 | #ifdef EINTR | |
238 | || errno == EINTR | |
f69f9da1 | 239 | #endif |
9d291bdf SM |
240 | )) |
241 | { QUIT; continue; } | |
177c0ea7 | 242 | |
f69f9da1 GM |
243 | if (dp == NULL) |
244 | break; | |
245 | ||
128ecc89 | 246 | if (DIRENTRY_NONEMPTY (dp)) |
14d55bce | 247 | { |
e23f810c | 248 | int len; |
2488aba5 | 249 | int wanted = 0; |
388ac098 GM |
250 | Lisp_Object name, finalname; |
251 | struct gcpro gcpro1, gcpro2; | |
e23f810c KH |
252 | |
253 | len = NAMLEN (dp); | |
9ad4f3e5 | 254 | name = finalname = make_unibyte_string (dp->d_name, len); |
388ac098 | 255 | GCPRO2 (finalname, name); |
177c0ea7 | 256 | |
6c8b4f07 | 257 | /* Note: DECODE_FILE can GC; it should protect its argument, |
388ac098 GM |
258 | though. */ |
259 | name = DECODE_FILE (name); | |
d5db4077 | 260 | len = SBYTES (name); |
e23f810c | 261 | |
2488aba5 AI |
262 | /* Now that we have unwind_protect in place, we might as well |
263 | allow matching to be interrupted. */ | |
264 | immediate_quit = 1; | |
265 | QUIT; | |
266 | ||
265a9e55 | 267 | if (NILP (match) |
d5db4077 | 268 | || (0 <= re_search (bufp, SDATA (name), len, 0, len, 0))) |
388ac098 | 269 | wanted = 1; |
2488aba5 AI |
270 | |
271 | immediate_quit = 0; | |
272 | ||
273 | if (wanted) | |
14d55bce | 274 | { |
265a9e55 | 275 | if (!NILP (full)) |
14d55bce | 276 | { |
e23f810c | 277 | Lisp_Object fullname; |
388ac098 GM |
278 | int nbytes = len + directory_nbytes + needsep; |
279 | int nchars; | |
5617588f | 280 | |
388ac098 | 281 | fullname = make_uninit_multibyte_string (nbytes, nbytes); |
72af86bd AS |
282 | memcpy (SDATA (fullname), SDATA (directory), |
283 | directory_nbytes); | |
177c0ea7 | 284 | |
5617588f | 285 | if (needsep) |
d549c5db | 286 | SSET (fullname, directory_nbytes, DIRECTORY_SEP); |
177c0ea7 | 287 | |
72af86bd AS |
288 | memcpy (SDATA (fullname) + directory_nbytes + needsep, |
289 | SDATA (name), len); | |
177c0ea7 | 290 | |
d5db4077 | 291 | nchars = chars_in_text (SDATA (fullname), nbytes); |
388ac098 GM |
292 | |
293 | /* Some bug somewhere. */ | |
294 | if (nchars > nbytes) | |
295 | abort (); | |
177c0ea7 | 296 | |
437fcd47 | 297 | STRING_SET_CHARS (fullname, nchars); |
388ac098 | 298 | if (nchars == nbytes) |
d5db4077 | 299 | STRING_SET_UNIBYTE (fullname); |
177c0ea7 | 300 | |
4424b255 GV |
301 | finalname = fullname; |
302 | } | |
aab9c564 KH |
303 | else |
304 | finalname = name; | |
4424b255 GV |
305 | |
306 | if (attrs) | |
307 | { | |
308 | /* Construct an expanded filename for the directory entry. | |
309 | Use the decoded names for input to Ffile_attributes. */ | |
388ac098 GM |
310 | Lisp_Object decoded_fullname, fileattrs; |
311 | struct gcpro gcpro1, gcpro2; | |
312 | ||
313 | decoded_fullname = fileattrs = Qnil; | |
314 | GCPRO2 (decoded_fullname, fileattrs); | |
4424b255 | 315 | |
388ac098 | 316 | /* Both Fexpand_file_name and Ffile_attributes can GC. */ |
4424b255 | 317 | decoded_fullname = Fexpand_file_name (name, directory); |
6b61353c | 318 | fileattrs = Ffile_attributes (decoded_fullname, id_format); |
4424b255 GV |
319 | |
320 | list = Fcons (Fcons (finalname, fileattrs), list); | |
388ac098 | 321 | UNGCPRO; |
4424b255 GV |
322 | } |
323 | else | |
388ac098 | 324 | list = Fcons (finalname, list); |
14d55bce | 325 | } |
388ac098 GM |
326 | |
327 | UNGCPRO; | |
14d55bce RS |
328 | } |
329 | } | |
2488aba5 | 330 | |
d15b573e | 331 | BLOCK_INPUT; |
14d55bce | 332 | closedir (d); |
d15b573e | 333 | UNBLOCK_INPUT; |
65156807 EZ |
334 | #ifdef WINDOWSNT |
335 | if (attrs) | |
336 | Vw32_get_true_file_attributes = w32_save; | |
337 | #endif | |
2488aba5 AI |
338 | |
339 | /* Discard the unwind protect. */ | |
340 | specpdl_ptr = specpdl + count; | |
341 | ||
388ac098 GM |
342 | if (NILP (nosort)) |
343 | list = Fsort (Fnreverse (list), | |
344 | attrs ? Qfile_attributes_lessp : Qstring_lessp); | |
177c0ea7 | 345 | |
388ac098 | 346 | RETURN_UNGCPRO (list); |
14d55bce | 347 | } |
4424b255 GV |
348 | |
349 | ||
350 | DEFUN ("directory-files", Fdirectory_files, Sdirectory_files, 1, 4, 0, | |
335c5470 PJ |
351 | doc: /* Return a list of names of files in DIRECTORY. |
352 | There are three optional arguments: | |
353 | If FULL is non-nil, return absolute file names. Otherwise return names | |
354 | that are relative to the specified directory. | |
355 | If MATCH is non-nil, mention only file names that match the regexp MATCH. | |
356 | If NOSORT is non-nil, the list is not sorted--its order is unpredictable. | |
a489517b JB |
357 | Otherwise, the list returned is sorted with `string-lessp'. |
358 | NOSORT is useful if you plan to sort the result yourself. */) | |
5842a27b | 359 | (Lisp_Object directory, Lisp_Object full, Lisp_Object match, Lisp_Object nosort) |
4424b255 GV |
360 | { |
361 | Lisp_Object handler; | |
4ece81a6 | 362 | directory = Fexpand_file_name (directory, Qnil); |
4424b255 GV |
363 | |
364 | /* If the file name has special constructs in it, | |
365 | call the corresponding file handler. */ | |
366 | handler = Ffind_file_name_handler (directory, Qdirectory_files); | |
367 | if (!NILP (handler)) | |
6b61353c KH |
368 | return call5 (handler, Qdirectory_files, directory, |
369 | full, match, nosort); | |
4424b255 | 370 | |
6b61353c | 371 | return directory_files_internal (directory, full, match, nosort, 0, Qnil); |
4424b255 GV |
372 | } |
373 | ||
335c5470 | 374 | DEFUN ("directory-files-and-attributes", Fdirectory_files_and_attributes, |
6b61353c | 375 | Sdirectory_files_and_attributes, 1, 5, 0, |
335c5470 | 376 | doc: /* Return a list of names of files and their attributes in DIRECTORY. |
6b61353c | 377 | There are four optional arguments: |
335c5470 PJ |
378 | If FULL is non-nil, return absolute file names. Otherwise return names |
379 | that are relative to the specified directory. | |
380 | If MATCH is non-nil, mention only file names that match the regexp MATCH. | |
381 | If NOSORT is non-nil, the list is not sorted--its order is unpredictable. | |
6b61353c KH |
382 | NOSORT is useful if you plan to sort the result yourself. |
383 | ID-FORMAT specifies the preferred format of attributes uid and gid, see | |
6c5665e9 EZ |
384 | `file-attributes' for further documentation. |
385 | On MS-Windows, performance depends on `w32-get-true-file-attributes', | |
386 | which see. */) | |
5842a27b | 387 | (Lisp_Object directory, Lisp_Object full, Lisp_Object match, Lisp_Object nosort, Lisp_Object id_format) |
4424b255 GV |
388 | { |
389 | Lisp_Object handler; | |
4ece81a6 | 390 | directory = Fexpand_file_name (directory, Qnil); |
4424b255 GV |
391 | |
392 | /* If the file name has special constructs in it, | |
393 | call the corresponding file handler. */ | |
394 | handler = Ffind_file_name_handler (directory, Qdirectory_files_and_attributes); | |
395 | if (!NILP (handler)) | |
6b61353c KH |
396 | return call6 (handler, Qdirectory_files_and_attributes, |
397 | directory, full, match, nosort, id_format); | |
4424b255 | 398 | |
6b61353c | 399 | return directory_files_internal (directory, full, match, nosort, 1, id_format); |
4424b255 GV |
400 | } |
401 | ||
14d55bce | 402 | \f |
971de7fb | 403 | Lisp_Object file_name_completion (Lisp_Object file, Lisp_Object dirname, int all_flag, int ver_flag, Lisp_Object predicate); |
14d55bce RS |
404 | |
405 | DEFUN ("file-name-completion", Ffile_name_completion, Sfile_name_completion, | |
abfb1932 | 406 | 2, 3, 0, |
335c5470 PJ |
407 | doc: /* Complete file name FILE in directory DIRECTORY. |
408 | Returns the longest string | |
409 | common to all file names in DIRECTORY that start with FILE. | |
410 | If there is only one and FILE matches it exactly, returns t. | |
2f60660a | 411 | Returns nil if DIRECTORY contains no name starting with FILE. |
335c5470 | 412 | |
b6ce54d6 RS |
413 | If PREDICATE is non-nil, call PREDICATE with each possible |
414 | completion (in absolute form) and ignore it if PREDICATE returns nil. | |
415 | ||
335c5470 PJ |
416 | This function ignores some of the possible completions as |
417 | determined by the variable `completion-ignored-extensions', which see. */) | |
5842a27b | 418 | (Lisp_Object file, Lisp_Object directory, Lisp_Object predicate) |
14d55bce | 419 | { |
32f4334d | 420 | Lisp_Object handler; |
32f4334d | 421 | |
8436e231 | 422 | /* If the directory name has special constructs in it, |
32f4334d | 423 | call the corresponding file handler. */ |
23bd240f | 424 | handler = Ffind_file_name_handler (directory, Qfile_name_completion); |
32f4334d | 425 | if (!NILP (handler)) |
abfb1932 | 426 | return call4 (handler, Qfile_name_completion, file, directory, predicate); |
32f4334d | 427 | |
8436e231 RS |
428 | /* If the file name has special constructs in it, |
429 | call the corresponding file handler. */ | |
430 | handler = Ffind_file_name_handler (file, Qfile_name_completion); | |
431 | if (!NILP (handler)) | |
abfb1932 | 432 | return call4 (handler, Qfile_name_completion, file, directory, predicate); |
8436e231 | 433 | |
abfb1932 | 434 | return file_name_completion (file, directory, 0, 0, predicate); |
14d55bce RS |
435 | } |
436 | ||
437 | DEFUN ("file-name-all-completions", Ffile_name_all_completions, | |
335c5470 PJ |
438 | Sfile_name_all_completions, 2, 2, 0, |
439 | doc: /* Return a list of all completions of file name FILE in directory DIRECTORY. | |
440 | These are all file names in directory DIRECTORY which begin with FILE. */) | |
5842a27b | 441 | (Lisp_Object file, Lisp_Object directory) |
14d55bce | 442 | { |
32f4334d RS |
443 | Lisp_Object handler; |
444 | ||
8436e231 | 445 | /* If the directory name has special constructs in it, |
32f4334d | 446 | call the corresponding file handler. */ |
23bd240f | 447 | handler = Ffind_file_name_handler (directory, Qfile_name_all_completions); |
32f4334d | 448 | if (!NILP (handler)) |
23bd240f | 449 | return call3 (handler, Qfile_name_all_completions, file, directory); |
32f4334d | 450 | |
8436e231 RS |
451 | /* If the file name has special constructs in it, |
452 | call the corresponding file handler. */ | |
453 | handler = Ffind_file_name_handler (file, Qfile_name_all_completions); | |
454 | if (!NILP (handler)) | |
23bd240f | 455 | return call3 (handler, Qfile_name_all_completions, file, directory); |
8436e231 | 456 | |
abfb1932 | 457 | return file_name_completion (file, directory, 1, 0, Qnil); |
14d55bce RS |
458 | } |
459 | ||
438105ed | 460 | static int file_name_completion_stat (Lisp_Object dirname, DIRENTRY *dp, struct stat *st_addr); |
01bb4018 | 461 | Lisp_Object Qdefault_directory; |
dfcf069d | 462 | |
14d55bce | 463 | Lisp_Object |
971de7fb | 464 | file_name_completion (Lisp_Object file, Lisp_Object dirname, int all_flag, int ver_flag, Lisp_Object predicate) |
14d55bce RS |
465 | { |
466 | DIR *d; | |
3271a8f5 | 467 | int bestmatchsize = 0; |
14d55bce | 468 | int matchcount = 0; |
abfb1932 RS |
469 | /* If ALL_FLAG is 1, BESTMATCH is the list of all matches, decoded. |
470 | If ALL_FLAG is 0, BESTMATCH is either nil | |
471 | or the best match so far, not decoded. */ | |
14d55bce | 472 | Lisp_Object bestmatch, tem, elt, name; |
24c2a54f RS |
473 | Lisp_Object encoded_file; |
474 | Lisp_Object encoded_dir; | |
14d55bce RS |
475 | struct stat st; |
476 | int directoryp; | |
3271a8f5 SM |
477 | /* If includeall is zero, exclude files in completion-ignored-extensions as |
478 | well as "." and "..". Until shown otherwise, assume we can't exclude | |
479 | anything. */ | |
480 | int includeall = 1; | |
aed13378 | 481 | int count = SPECPDL_INDEX (); |
24c2a54f | 482 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5; |
3fcc88cc | 483 | |
6bbd7a29 GM |
484 | elt = Qnil; |
485 | ||
b7826503 | 486 | CHECK_STRING (file); |
14d55bce | 487 | |
128ecc89 RS |
488 | #ifdef FILE_SYSTEM_CASE |
489 | file = FILE_SYSTEM_CASE (file); | |
490 | #endif | |
14d55bce | 491 | bestmatch = Qnil; |
24c2a54f RS |
492 | encoded_file = encoded_dir = Qnil; |
493 | GCPRO5 (file, dirname, bestmatch, encoded_file, encoded_dir); | |
3fcc88cc | 494 | dirname = Fexpand_file_name (dirname, Qnil); |
01bb4018 | 495 | specbind (Qdefault_directory, dirname); |
14d55bce | 496 | |
24c2a54f RS |
497 | /* Do completion on the encoded file name |
498 | because the other names in the directory are (we presume) | |
499 | encoded likewise. We decode the completed string at the end. */ | |
2a54a229 SM |
500 | /* Actually, this is not quite true any more: we do most of the completion |
501 | work with decoded file names, but we still do some filtering based | |
502 | on the encoded file name. */ | |
6c8b4f07 | 503 | encoded_file = STRING_MULTIBYTE (file) ? ENCODE_FILE (file) : file; |
24c2a54f RS |
504 | |
505 | encoded_dir = ENCODE_FILE (dirname); | |
506 | ||
3271a8f5 SM |
507 | BLOCK_INPUT; |
508 | d = opendir (SDATA (Fdirectory_file_name (encoded_dir))); | |
509 | UNBLOCK_INPUT; | |
510 | if (!d) | |
511 | report_file_error ("Opening directory", Fcons (dirname, Qnil)); | |
14d55bce | 512 | |
3271a8f5 SM |
513 | record_unwind_protect (directory_files_internal_unwind, |
514 | make_save_value (d, 0)); | |
14d55bce | 515 | |
3271a8f5 SM |
516 | /* Loop reading blocks */ |
517 | /* (att3b compiler bug requires do a null comparison this way) */ | |
518 | while (1) | |
14d55bce | 519 | { |
3271a8f5 SM |
520 | DIRENTRY *dp; |
521 | int len; | |
522 | int canexclude = 0; | |
14d55bce | 523 | |
3271a8f5 SM |
524 | errno = 0; |
525 | dp = readdir (d); | |
526 | if (dp == NULL && (0 | |
9d291bdf | 527 | # ifdef EAGAIN |
3271a8f5 | 528 | || errno == EAGAIN |
9d291bdf SM |
529 | # endif |
530 | # ifdef EINTR | |
3271a8f5 | 531 | || errno == EINTR |
9d291bdf | 532 | # endif |
3271a8f5 SM |
533 | )) |
534 | { QUIT; continue; } | |
9d291bdf | 535 | |
3271a8f5 | 536 | if (!dp) break; |
14d55bce | 537 | |
3271a8f5 | 538 | len = NAMLEN (dp); |
14d55bce | 539 | |
3271a8f5 SM |
540 | QUIT; |
541 | if (! DIRENTRY_NONEMPTY (dp) | |
542 | || len < SCHARS (encoded_file) | |
543 | || 0 <= scmp (dp->d_name, SDATA (encoded_file), | |
544 | SCHARS (encoded_file))) | |
545 | continue; | |
14d55bce | 546 | |
3271a8f5 SM |
547 | if (file_name_completion_stat (encoded_dir, dp, &st) < 0) |
548 | continue; | |
14d55bce | 549 | |
3271a8f5 SM |
550 | directoryp = ((st.st_mode & S_IFMT) == S_IFDIR); |
551 | tem = Qnil; | |
552 | /* If all_flag is set, always include all. | |
553 | It would not actually be helpful to the user to ignore any possible | |
554 | completions when making a list of them. */ | |
555 | if (!all_flag) | |
556 | { | |
557 | int skip; | |
2cd298e2 | 558 | |
7519c40d | 559 | #if 0 /* FIXME: The `scmp' call compares an encoded and a decoded string. */ |
2cd298e2 SM |
560 | /* If this entry matches the current bestmatch, the only |
561 | thing it can do is increase matchcount, so don't bother | |
562 | investigating it any further. */ | |
563 | if (!completion_ignore_case | |
564 | /* The return result depends on whether it's the sole match. */ | |
565 | && matchcount > 1 | |
566 | && !includeall /* This match may allow includeall to 0. */ | |
567 | && len >= bestmatchsize | |
568 | && 0 > scmp (dp->d_name, SDATA (bestmatch), bestmatchsize)) | |
569 | continue; | |
7519c40d | 570 | #endif |
2cd298e2 | 571 | |
3271a8f5 | 572 | if (directoryp) |
ad456ad4 RS |
573 | { |
574 | #ifndef TRIVIAL_DIRECTORY_ENTRY | |
575 | #define TRIVIAL_DIRECTORY_ENTRY(n) (!strcmp (n, ".") || !strcmp (n, "..")) | |
576 | #endif | |
abfb1932 RS |
577 | /* "." and ".." are never interesting as completions, and are |
578 | actually in the way in a directory with only one file. */ | |
3271a8f5 SM |
579 | if (TRIVIAL_DIRECTORY_ENTRY (dp->d_name)) |
580 | canexclude = 1; | |
581 | else if (len > SCHARS (encoded_file)) | |
d013f29b EZ |
582 | /* Ignore directories if they match an element of |
583 | completion-ignored-extensions which ends in a slash. */ | |
584 | for (tem = Vcompletion_ignored_extensions; | |
585 | CONSP (tem); tem = XCDR (tem)) | |
586 | { | |
587 | int elt_len; | |
2a54a229 | 588 | unsigned char *p1; |
d013f29b EZ |
589 | |
590 | elt = XCAR (tem); | |
591 | if (!STRINGP (elt)) | |
592 | continue; | |
a74aaa9d EZ |
593 | /* Need to encode ELT, since scmp compares unibyte |
594 | strings only. */ | |
595 | elt = ENCODE_FILE (elt); | |
d5db4077 | 596 | elt_len = SCHARS (elt) - 1; /* -1 for trailing / */ |
7a8d465a | 597 | if (elt_len <= 0) |
d013f29b | 598 | continue; |
d5db4077 | 599 | p1 = SDATA (elt); |
d013f29b EZ |
600 | if (p1[elt_len] != '/') |
601 | continue; | |
602 | skip = len - elt_len; | |
603 | if (skip < 0) | |
604 | continue; | |
605 | ||
606 | if (0 <= scmp (dp->d_name + skip, p1, elt_len)) | |
607 | continue; | |
608 | break; | |
609 | } | |
ad456ad4 RS |
610 | } |
611 | else | |
3271a8f5 | 612 | { |
14d55bce RS |
613 | /* Compare extensions-to-be-ignored against end of this file name */ |
614 | /* if name is not an exact match against specified string */ | |
3271a8f5 | 615 | if (len > SCHARS (encoded_file)) |
14d55bce RS |
616 | /* and exit this for loop if a match is found */ |
617 | for (tem = Vcompletion_ignored_extensions; | |
70949dac | 618 | CONSP (tem); tem = XCDR (tem)) |
14d55bce | 619 | { |
70949dac | 620 | elt = XCAR (tem); |
88cf1852 | 621 | if (!STRINGP (elt)) continue; |
a74aaa9d EZ |
622 | /* Need to encode ELT, since scmp compares unibyte |
623 | strings only. */ | |
624 | elt = ENCODE_FILE (elt); | |
d5db4077 | 625 | skip = len - SCHARS (elt); |
14d55bce RS |
626 | if (skip < 0) continue; |
627 | ||
628 | if (0 <= scmp (dp->d_name + skip, | |
d5db4077 KR |
629 | SDATA (elt), |
630 | SCHARS (elt))) | |
14d55bce RS |
631 | continue; |
632 | break; | |
633 | } | |
634 | } | |
635 | ||
f676868d KH |
636 | /* If an ignored-extensions match was found, |
637 | don't process this name as a completion. */ | |
3271a8f5 SM |
638 | if (CONSP (tem)) |
639 | canexclude = 1; | |
f676868d | 640 | |
3271a8f5 SM |
641 | if (!includeall && canexclude) |
642 | /* We're not including all files and this file can be excluded. */ | |
643 | continue; | |
9c691c00 | 644 | |
3271a8f5 SM |
645 | if (includeall && !canexclude) |
646 | { /* If we have one non-excludable file, we want to exclude the | |
647 | excudable files. */ | |
648 | includeall = 0; | |
649 | /* Throw away any previous excludable match found. */ | |
650 | bestmatch = Qnil; | |
651 | bestmatchsize = 0; | |
652 | matchcount = 0; | |
f676868d | 653 | } |
3271a8f5 SM |
654 | } |
655 | /* FIXME: If we move this `decode' earlier we can eliminate | |
656 | the repeated ENCODE_FILE on Vcompletion_ignored_extensions. */ | |
657 | name = make_unibyte_string (dp->d_name, len); | |
658 | name = DECODE_FILE (name); | |
659 | ||
660 | { | |
661 | Lisp_Object regexps; | |
662 | Lisp_Object zero; | |
663 | XSETFASTINT (zero, 0); | |
664 | ||
665 | /* Ignore this element if it fails to match all the regexps. */ | |
cc524e3b CY |
666 | if (completion_ignore_case) |
667 | { | |
668 | for (regexps = Vcompletion_regexp_list; CONSP (regexps); | |
669 | regexps = XCDR (regexps)) | |
670 | if (fast_string_match_ignore_case (XCAR (regexps), name) < 0) | |
671 | break; | |
672 | } | |
673 | else | |
674 | { | |
675 | for (regexps = Vcompletion_regexp_list; CONSP (regexps); | |
676 | regexps = XCDR (regexps)) | |
677 | if (fast_string_match (XCAR (regexps), name) < 0) | |
678 | break; | |
679 | } | |
680 | ||
3271a8f5 SM |
681 | if (CONSP (regexps)) |
682 | continue; | |
683 | } | |
684 | ||
685 | /* This is a possible completion */ | |
686 | if (directoryp) | |
687 | /* This completion is a directory; make it end with '/'. */ | |
688 | name = Ffile_name_as_directory (name); | |
689 | ||
690 | /* Test the predicate, if any. */ | |
691 | if (!NILP (predicate)) | |
692 | { | |
693 | Lisp_Object val; | |
694 | struct gcpro gcpro1; | |
14d55bce | 695 | |
3271a8f5 SM |
696 | GCPRO1 (name); |
697 | val = call1 (predicate, name); | |
698 | UNGCPRO; | |
c4c52bb7 | 699 | |
3271a8f5 SM |
700 | if (NILP (val)) |
701 | continue; | |
702 | } | |
abfb1932 | 703 | |
3271a8f5 | 704 | /* Suitably record this match. */ |
14d55bce | 705 | |
3271a8f5 | 706 | matchcount++; |
f676868d | 707 | |
3271a8f5 SM |
708 | if (all_flag) |
709 | bestmatch = Fcons (name, bestmatch); | |
710 | else if (NILP (bestmatch)) | |
711 | { | |
712 | bestmatch = name; | |
713 | bestmatchsize = SCHARS (name); | |
714 | } | |
715 | else | |
716 | { | |
717 | Lisp_Object zero = make_number (0); | |
718 | /* FIXME: This is a copy of the code in Ftry_completion. */ | |
719 | int compare = min (bestmatchsize, SCHARS (name)); | |
720 | Lisp_Object tem | |
721 | = Fcompare_strings (bestmatch, zero, | |
722 | make_number (compare), | |
723 | name, zero, | |
724 | make_number (compare), | |
725 | completion_ignore_case ? Qt : Qnil); | |
726 | int matchsize | |
727 | = (EQ (tem, Qt) ? compare | |
728 | : XINT (tem) < 0 ? - XINT (tem) - 1 | |
729 | : XINT (tem) - 1); | |
730 | ||
731 | if (completion_ignore_case) | |
f676868d | 732 | { |
3271a8f5 SM |
733 | /* If this is an exact match except for case, |
734 | use it as the best match rather than one that is not | |
735 | an exact match. This way, we get the case pattern | |
736 | of the actual match. */ | |
737 | /* This tests that the current file is an exact match | |
738 | but BESTMATCH is not (it is too long). */ | |
739 | if ((matchsize == SCHARS (name) | |
2cd298e2 | 740 | && matchsize + !!directoryp < SCHARS (bestmatch)) |
3271a8f5 SM |
741 | || |
742 | /* If there is no exact match ignoring case, | |
743 | prefer a match that does not change the case | |
744 | of the input. */ | |
745 | /* If there is more than one exact match aside from | |
746 | case, and one of them is exact including case, | |
747 | prefer that one. */ | |
748 | /* This == checks that, of current file and BESTMATCH, | |
749 | either both or neither are exact. */ | |
750 | (((matchsize == SCHARS (name)) | |
751 | == | |
752 | (matchsize + !!directoryp == SCHARS (bestmatch))) | |
753 | && (tem = Fcompare_strings (name, zero, | |
754 | make_number (SCHARS (file)), | |
755 | file, zero, | |
756 | Qnil, | |
757 | Qnil), | |
758 | EQ (Qt, tem)) | |
759 | && (tem = Fcompare_strings (bestmatch, zero, | |
760 | make_number (SCHARS (file)), | |
761 | file, zero, | |
762 | Qnil, | |
763 | Qnil), | |
764 | ! EQ (Qt, tem)))) | |
765 | bestmatch = name; | |
14d55bce | 766 | } |
3271a8f5 | 767 | bestmatchsize = matchsize; |
2cd298e2 SM |
768 | |
769 | /* If the best completion so far is reduced to the string | |
770 | we're trying to complete, then we already know there's no | |
771 | other completion, so there's no point looking any further. */ | |
772 | if (matchsize <= SCHARS (file) | |
773 | && !includeall /* A future match may allow includeall to 0. */ | |
774 | /* If completion-ignore-case is non-nil, don't | |
775 | short-circuit because we want to find the best | |
776 | possible match *including* case differences. */ | |
777 | && (!completion_ignore_case || matchsize == 0) | |
778 | /* The return value depends on whether it's the sole match. */ | |
779 | && matchcount > 1) | |
780 | break; | |
781 | ||
14d55bce | 782 | } |
14d55bce RS |
783 | } |
784 | ||
3fcc88cc | 785 | UNGCPRO; |
3271a8f5 | 786 | /* This closes the directory. */ |
c3a3229c | 787 | bestmatch = unbind_to (count, bestmatch); |
14d55bce | 788 | |
265a9e55 | 789 | if (all_flag || NILP (bestmatch)) |
2a54a229 | 790 | return bestmatch; |
928b5acc SM |
791 | /* Return t if the supplied string is an exact match (counting case); |
792 | it does not require any change to be made. */ | |
793 | if (matchcount == 1 && !NILP (Fequal (bestmatch, file))) | |
14d55bce | 794 | return Qt; |
24c2a54f RS |
795 | bestmatch = Fsubstring (bestmatch, make_number (0), |
796 | make_number (bestmatchsize)); | |
24c2a54f | 797 | return bestmatch; |
14d55bce RS |
798 | } |
799 | ||
b3f04ced RS |
800 | /* Compare exactly LEN chars of strings at S1 and S2, |
801 | ignoring case if appropriate. | |
802 | Return -1 if strings match, | |
803 | else number of chars that match at the beginning. */ | |
804 | ||
805 | static int | |
eec47d6b | 806 | scmp (const unsigned char *s1, const unsigned char *s2, int len) |
b3f04ced RS |
807 | { |
808 | register int l = len; | |
809 | ||
810 | if (completion_ignore_case) | |
811 | { | |
812 | while (l && DOWNCASE (*s1++) == DOWNCASE (*s2++)) | |
813 | l--; | |
814 | } | |
815 | else | |
816 | { | |
817 | while (l && *s1++ == *s2++) | |
818 | l--; | |
819 | } | |
820 | if (l == 0) | |
821 | return -1; | |
822 | else | |
823 | return len - l; | |
824 | } | |
825 | ||
dfcf069d | 826 | static int |
438105ed | 827 | file_name_completion_stat (Lisp_Object dirname, DIRENTRY *dp, struct stat *st_addr) |
14d55bce RS |
828 | { |
829 | int len = NAMLEN (dp); | |
d5db4077 | 830 | int pos = SCHARS (dirname); |
7e3cf34f | 831 | int value; |
14d55bce RS |
832 | char *fullname = (char *) alloca (len + pos + 2); |
833 | ||
04924ee3 | 834 | #ifdef MSDOS |
04924ee3 RS |
835 | /* Some fields of struct stat are *very* expensive to compute on MS-DOS, |
836 | but aren't required here. Avoid computing the following fields: | |
837 | st_inode, st_size and st_nlink for directories, and the execute bits | |
838 | in st_mode for non-directory files with non-standard extensions. */ | |
839 | ||
840 | unsigned short save_djstat_flags = _djstat_flags; | |
841 | ||
842 | _djstat_flags = _STAT_INODE | _STAT_EXEC_MAGIC | _STAT_DIRSIZE; | |
04924ee3 RS |
843 | #endif /* MSDOS */ |
844 | ||
72af86bd | 845 | memcpy (fullname, SDATA (dirname), pos); |
0b39d75d RS |
846 | if (!IS_DIRECTORY_SEP (fullname[pos - 1])) |
847 | fullname[pos++] = DIRECTORY_SEP; | |
14d55bce | 848 | |
72af86bd | 849 | memcpy (fullname + pos, dp->d_name, len); |
14d55bce RS |
850 | fullname[pos + len] = 0; |
851 | ||
a889bd0e | 852 | #ifdef S_IFLNK |
7e3cf34f RS |
853 | /* We want to return success if a link points to a nonexistent file, |
854 | but we want to return the status for what the link points to, | |
855 | in case it is a directory. */ | |
856 | value = lstat (fullname, st_addr); | |
857 | stat (fullname, st_addr); | |
858 | return value; | |
a889bd0e | 859 | #else |
04924ee3 RS |
860 | value = stat (fullname, st_addr); |
861 | #ifdef MSDOS | |
04924ee3 | 862 | _djstat_flags = save_djstat_flags; |
04924ee3 RS |
863 | #endif /* MSDOS */ |
864 | return value; | |
865 | #endif /* S_IFLNK */ | |
14d55bce RS |
866 | } |
867 | \f | |
868 | Lisp_Object | |
971de7fb | 869 | make_time (time_t time) |
14d55bce RS |
870 | { |
871 | return Fcons (make_number (time >> 16), | |
872 | Fcons (make_number (time & 0177777), Qnil)); | |
873 | } | |
874 | ||
8aaaec6b EZ |
875 | static char * |
876 | stat_uname (struct stat *st) | |
877 | { | |
878 | #ifdef WINDOWSNT | |
879 | return st->st_uname; | |
880 | #else | |
881 | struct passwd *pw = (struct passwd *) getpwuid (st->st_uid); | |
882 | ||
883 | if (pw) | |
884 | return pw->pw_name; | |
885 | else | |
886 | return NULL; | |
887 | #endif | |
888 | } | |
889 | ||
890 | static char * | |
891 | stat_gname (struct stat *st) | |
892 | { | |
893 | #ifdef WINDOWSNT | |
894 | return st->st_gname; | |
895 | #else | |
896 | struct group *gr = (struct group *) getgrgid (st->st_gid); | |
897 | ||
898 | if (gr) | |
899 | return gr->gr_name; | |
900 | else | |
901 | return NULL; | |
902 | #endif | |
903 | } | |
904 | ||
6b61353c | 905 | DEFUN ("file-attributes", Ffile_attributes, Sfile_attributes, 1, 2, 0, |
335c5470 PJ |
906 | doc: /* Return a list of attributes of file FILENAME. |
907 | Value is nil if specified file cannot be opened. | |
6b61353c KH |
908 | |
909 | ID-FORMAT specifies the preferred format of attributes uid and gid (see | |
e42cd1a7 JB |
910 | below) - valid values are 'string and 'integer. The latter is the |
911 | default, but we plan to change that, so you should specify a non-nil value | |
912 | for ID-FORMAT if you use the returned uid or gid. | |
6b61353c KH |
913 | |
914 | Elements of the attribute list are: | |
335c5470 PJ |
915 | 0. t for directory, string (name linked to) for symbolic link, or nil. |
916 | 1. Number of links to file. | |
78e7d1fe EZ |
917 | 2. File uid as a string or a number. If a string value cannot be |
918 | looked up, a numeric value, either an integer or a float, is returned. | |
6b61353c | 919 | 3. File gid, likewise. |
335c5470 PJ |
920 | 4. Last access time, as a list of two integers. |
921 | First integer has high-order 16 bits of time, second has low 16 bits. | |
e02131a2 EZ |
922 | (See a note below about access time on FAT-based filesystems.) |
923 | 5. Last modification time, likewise. This is the time of the last | |
924 | change to the file's contents. | |
925 | 6. Last status change time, likewise. This is the time of last change | |
926 | to the file's attributes: owner and group, access mode bits, etc. | |
335c5470 PJ |
927 | 7. Size in bytes. |
928 | This is a floating point number if the size is too large for an integer. | |
929 | 8. File modes, as a string of ten letters or dashes as in ls -l. | |
e0f24100 | 930 | 9. t if file's gid would change if file were deleted and recreated. |
e02131a2 EZ |
931 | 10. inode number. If inode number is larger than what Emacs integer |
932 | can hold, but still fits into a 32-bit number, this is a cons cell | |
933 | containing two integers: first the high part, then the low 16 bits. | |
934 | If the inode number is wider than 32 bits, this is of the form | |
935 | (HIGH MIDDLE . LOW): first the high 24 bits, then middle 24 bits, | |
936 | and finally the low 16 bits. | |
937 | 11. Filesystem device number. If it is larger than what the Emacs | |
938 | integer can hold, this is a cons cell, similar to the inode number. | |
939 | ||
940 | On most filesystems, the combination of the inode and the device | |
941 | number uniquely identifies the file. | |
6c5665e9 EZ |
942 | |
943 | On MS-Windows, performance depends on `w32-get-true-file-attributes', | |
21f73755 EZ |
944 | which see. |
945 | ||
946 | On some FAT-based filesystems, only the date of last access is recorded, | |
947 | so last access time will always be midnight of that day. */) | |
5842a27b | 948 | (Lisp_Object filename, Lisp_Object id_format) |
14d55bce RS |
949 | { |
950 | Lisp_Object values[12]; | |
24c2a54f | 951 | Lisp_Object encoded; |
14d55bce | 952 | struct stat s; |
98601119 | 953 | #ifdef BSD4_2 |
b3edfc9b | 954 | Lisp_Object dirname; |
14d55bce | 955 | struct stat sdir; |
98601119 | 956 | #endif /* BSD4_2 */ |
14d55bce | 957 | char modes[10]; |
32f4334d | 958 | Lisp_Object handler; |
7435aef8 | 959 | struct gcpro gcpro1; |
51105b13 | 960 | char *uname = NULL, *gname = NULL; |
14d55bce RS |
961 | |
962 | filename = Fexpand_file_name (filename, Qnil); | |
32f4334d RS |
963 | |
964 | /* If the file name has special constructs in it, | |
965 | call the corresponding file handler. */ | |
a617e913 | 966 | handler = Ffind_file_name_handler (filename, Qfile_attributes); |
32f4334d | 967 | if (!NILP (handler)) |
6b61353c KH |
968 | { /* Only pass the extra arg if it is used to help backward compatibility |
969 | with old file handlers which do not implement the new arg. --Stef */ | |
970 | if (NILP (id_format)) | |
971 | return call2 (handler, Qfile_attributes, filename); | |
972 | else | |
973 | return call3 (handler, Qfile_attributes, filename, id_format); | |
974 | } | |
32f4334d | 975 | |
7435aef8 | 976 | GCPRO1 (filename); |
24c2a54f | 977 | encoded = ENCODE_FILE (filename); |
7435aef8 | 978 | UNGCPRO; |
24c2a54f | 979 | |
d5db4077 | 980 | if (lstat (SDATA (encoded), &s) < 0) |
14d55bce RS |
981 | return Qnil; |
982 | ||
983 | switch (s.st_mode & S_IFMT) | |
984 | { | |
985 | default: | |
986 | values[0] = Qnil; break; | |
987 | case S_IFDIR: | |
988 | values[0] = Qt; break; | |
989 | #ifdef S_IFLNK | |
990 | case S_IFLNK: | |
991 | values[0] = Ffile_symlink_p (filename); break; | |
992 | #endif | |
993 | } | |
994 | values[1] = make_number (s.st_nlink); | |
51105b13 EZ |
995 | |
996 | if (!(NILP (id_format) || EQ (id_format, Qinteger))) | |
6b61353c | 997 | { |
8c8a7c58 | 998 | BLOCK_INPUT; |
8aaaec6b | 999 | uname = stat_uname (&s); |
8aaaec6b | 1000 | gname = stat_gname (&s); |
8c8a7c58 | 1001 | UNBLOCK_INPUT; |
6b61353c | 1002 | } |
51105b13 | 1003 | if (uname) |
80904120 | 1004 | values[2] = DECODE_SYSTEM (build_string (uname)); |
51105b13 | 1005 | else |
58a12889 | 1006 | values[2] = make_fixnum_or_float (s.st_uid); |
51105b13 | 1007 | if (gname) |
80904120 | 1008 | values[3] = DECODE_SYSTEM (build_string (gname)); |
51105b13 | 1009 | else |
58a12889 | 1010 | values[3] = make_fixnum_or_float (s.st_gid); |
51105b13 | 1011 | |
14d55bce RS |
1012 | values[4] = make_time (s.st_atime); |
1013 | values[5] = make_time (s.st_mtime); | |
1014 | values[6] = make_time (s.st_ctime); | |
58a12889 | 1015 | values[7] = make_fixnum_or_float (s.st_size); |
4bc12672 JR |
1016 | /* If the size is negative, and its type is long, convert it back to |
1017 | positive. */ | |
1018 | if (s.st_size < 0 && sizeof (s.st_size) == sizeof (long)) | |
1019 | values[7] = make_float ((double) ((unsigned long) s.st_size)); | |
1020 | ||
14d55bce RS |
1021 | filemodestring (&s, modes); |
1022 | values[8] = make_string (modes, 10); | |
98601119 | 1023 | #ifdef BSD4_2 /* file gid will be dir gid */ |
14d55bce | 1024 | dirname = Ffile_name_directory (filename); |
24c2a54f RS |
1025 | if (! NILP (dirname)) |
1026 | encoded = ENCODE_FILE (dirname); | |
d5db4077 | 1027 | if (! NILP (dirname) && stat (SDATA (encoded), &sdir) == 0) |
01388a3d | 1028 | values[9] = (sdir.st_gid != s.st_gid) ? Qt : Qnil; |
14d55bce RS |
1029 | else /* if we can't tell, assume worst */ |
1030 | values[9] = Qt; | |
1031 | #else /* file gid will be egid */ | |
01388a3d | 1032 | values[9] = (s.st_gid != getegid ()) ? Qt : Qnil; |
98601119 | 1033 | #endif /* not BSD4_2 */ |
58a12889 | 1034 | if (!FIXNUM_OVERFLOW_P (s.st_ino)) |
e058f331 | 1035 | /* Keep the most common cases as integers. */ |
58a12889 AS |
1036 | values[10] = make_number (s.st_ino); |
1037 | else if (!FIXNUM_OVERFLOW_P (s.st_ino >> 16)) | |
4c637faa RS |
1038 | /* To allow inode numbers larger than VALBITS, separate the bottom |
1039 | 16 bits. */ | |
e058f331 EZ |
1040 | values[10] = Fcons (make_number ((EMACS_INT)(s.st_ino >> 16)), |
1041 | make_number ((EMACS_INT)(s.st_ino & 0xffff))); | |
4c637faa | 1042 | else |
e058f331 EZ |
1043 | { |
1044 | /* To allow inode numbers beyond 32 bits, separate into 2 24-bit | |
ff8ddc7b | 1045 | high parts and a 16-bit bottom part. |
25ae5671 EZ |
1046 | The code on the next line avoids a compiler warning on |
1047 | systems where st_ino is 32 bit wide. (bug#766). */ | |
ff8ddc7b | 1048 | EMACS_INT high_ino = s.st_ino >> 31 >> 1; |
e058f331 EZ |
1049 | EMACS_INT low_ino = s.st_ino & 0xffffffff; |
1050 | ||
1051 | values[10] = Fcons (make_number (high_ino >> 8), | |
1052 | Fcons (make_number (((high_ino & 0xff) << 16) | |
1053 | + (low_ino >> 16)), | |
1054 | make_number (low_ino & 0xffff))); | |
1055 | } | |
68c45bf0 | 1056 | |
58a12889 AS |
1057 | /* Likewise for device. */ |
1058 | if (FIXNUM_OVERFLOW_P (s.st_dev)) | |
68c45bf0 PE |
1059 | values[11] = Fcons (make_number (s.st_dev >> 16), |
1060 | make_number (s.st_dev & 0xffff)); | |
1061 | else | |
1062 | values[11] = make_number (s.st_dev); | |
1063 | ||
14d55bce RS |
1064 | return Flist (sizeof(values) / sizeof(values[0]), values); |
1065 | } | |
4424b255 GV |
1066 | |
1067 | DEFUN ("file-attributes-lessp", Ffile_attributes_lessp, Sfile_attributes_lessp, 2, 2, 0, | |
335c5470 PJ |
1068 | doc: /* Return t if first arg file attributes list is less than second. |
1069 | Comparison is in lexicographic order and case is significant. */) | |
5842a27b | 1070 | (Lisp_Object f1, Lisp_Object f2) |
4424b255 GV |
1071 | { |
1072 | return Fstring_lessp (Fcar (f1), Fcar (f2)); | |
1073 | } | |
14d55bce | 1074 | \f |
dfcf069d | 1075 | void |
971de7fb | 1076 | syms_of_dired (void) |
14d55bce | 1077 | { |
d67b4f80 DN |
1078 | Qdirectory_files = intern_c_string ("directory-files"); |
1079 | Qdirectory_files_and_attributes = intern_c_string ("directory-files-and-attributes"); | |
1080 | Qfile_name_completion = intern_c_string ("file-name-completion"); | |
1081 | Qfile_name_all_completions = intern_c_string ("file-name-all-completions"); | |
1082 | Qfile_attributes = intern_c_string ("file-attributes"); | |
1083 | Qfile_attributes_lessp = intern_c_string ("file-attributes-lessp"); | |
1084 | Qdefault_directory = intern_c_string ("default-directory"); | |
32f4334d | 1085 | |
a2d3836c | 1086 | staticpro (&Qdirectory_files); |
4424b255 | 1087 | staticpro (&Qdirectory_files_and_attributes); |
a2d3836c EN |
1088 | staticpro (&Qfile_name_completion); |
1089 | staticpro (&Qfile_name_all_completions); | |
1090 | staticpro (&Qfile_attributes); | |
4424b255 | 1091 | staticpro (&Qfile_attributes_lessp); |
01bb4018 | 1092 | staticpro (&Qdefault_directory); |
a2d3836c | 1093 | |
14d55bce | 1094 | defsubr (&Sdirectory_files); |
4424b255 | 1095 | defsubr (&Sdirectory_files_and_attributes); |
14d55bce | 1096 | defsubr (&Sfile_name_completion); |
14d55bce RS |
1097 | defsubr (&Sfile_name_all_completions); |
1098 | defsubr (&Sfile_attributes); | |
4424b255 | 1099 | defsubr (&Sfile_attributes_lessp); |
14d55bce | 1100 | |
14d55bce | 1101 | DEFVAR_LISP ("completion-ignored-extensions", &Vcompletion_ignored_extensions, |
407a52c4 LT |
1102 | doc: /* Completion ignores file names ending in any string in this list. |
1103 | It does not ignore them if all possible completions end in one of | |
1104 | these strings or when displaying a list of completions. | |
1105 | It ignores directory names if they match any string in this list which | |
1106 | ends in a slash. */); | |
14d55bce RS |
1107 | Vcompletion_ignored_extensions = Qnil; |
1108 | } | |
6b61353c KH |
1109 | |
1110 | /* arch-tag: 1ac8deca-4d8f-4d41-ade9-089154d98c03 | |
1111 | (do not change this comment) */ |