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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, |
76b6f707 | 3 | 2004, 2005, 2006, 2007, 2008, 2009 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> | |
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> |
68c45bf0 | 33 | |
dfcf069d AS |
34 | #ifdef HAVE_UNISTD_H |
35 | #include <unistd.h> | |
36 | #endif | |
37 | ||
d6717cdb JB |
38 | /* The d_nameln member of a struct dirent includes the '\0' character |
39 | on some systems, but not on others. What's worse, you can't tell | |
40 | at compile-time which one it will be, since it really depends on | |
41 | the sort of system providing the filesystem you're reading from, | |
42 | not the system you are running on. Paul Eggert | |
43 | <eggert@bi.twinsun.com> says this occurs when Emacs is running on a | |
44 | SunOS 4.1.2 host, reading a directory that is remote-mounted from a | |
45 | Solaris 2.1 host and is in a native Solaris 2.1 filesystem. | |
46 | ||
47 | Since applying strlen to the name always works, we'll just do that. */ | |
48 | #define NAMLEN(p) strlen (p->d_name) | |
49 | ||
14d55bce RS |
50 | #ifdef SYSV_SYSTEM_DIR |
51 | ||
52 | #include <dirent.h> | |
53 | #define DIRENTRY struct dirent | |
14d55bce | 54 | |
128ecc89 | 55 | #else /* not SYSV_SYSTEM_DIR */ |
14d55bce | 56 | |
128ecc89 RS |
57 | #ifdef MSDOS |
58 | #include <dirent.h> | |
59 | #else | |
14d55bce | 60 | #include <sys/dir.h> |
128ecc89 | 61 | #endif |
14d55bce | 62 | |
851cab13 DL |
63 | #include <sys/stat.h> |
64 | ||
128ecc89 | 65 | #ifndef MSDOS |
14d55bce | 66 | #define DIRENTRY struct direct |
14d55bce RS |
67 | |
68 | extern DIR *opendir (); | |
69 | extern struct direct *readdir (); | |
70 | ||
128ecc89 RS |
71 | #endif /* not MSDOS */ |
72 | #endif /* not SYSV_SYSTEM_DIR */ | |
73 | ||
8f7f8c65 EZ |
74 | /* Some versions of Cygwin don't have d_ino in `struct dirent'. */ |
75 | #if defined(MSDOS) || defined(__CYGWIN__) | |
128ecc89 RS |
76 | #define DIRENTRY_NONEMPTY(p) ((p)->d_name[0] != 0) |
77 | #else | |
78 | #define DIRENTRY_NONEMPTY(p) ((p)->d_ino) | |
14d55bce RS |
79 | #endif |
80 | ||
14d55bce | 81 | #include "lisp.h" |
fa8459a3 | 82 | #include "systime.h" |
14d55bce RS |
83 | #include "buffer.h" |
84 | #include "commands.h" | |
d2f6dae8 | 85 | #include "character.h" |
bd33479f KH |
86 | #include "charset.h" |
87 | #include "coding.h" | |
14d55bce | 88 | #include "regex.h" |
8c8a7c58 | 89 | #include "blockinput.h" |
14d55bce | 90 | |
e50c66d3 KH |
91 | /* Returns a search buffer, with a fastmap allocated and ready to go. */ |
92 | extern struct re_pattern_buffer *compile_pattern (); | |
c7e466e1 | 93 | |
851cab13 DL |
94 | /* From filemode.c. Can't go in Lisp.h because of `stat'. */ |
95 | extern void filemodestring P_ ((struct stat *, char *)); | |
96 | ||
14d55bce RS |
97 | /* if system does not have symbolic links, it does not have lstat. |
98 | In that case, use ordinary stat instead. */ | |
99 | ||
100 | #ifndef S_IFLNK | |
101 | #define lstat stat | |
102 | #endif | |
103 | ||
97e98a56 | 104 | extern int completion_ignore_case; |
ecd3f8b2 | 105 | extern Lisp_Object Qcompletion_ignore_case; |
f676868d | 106 | extern Lisp_Object Vcompletion_regexp_list; |
ccbcf979 | 107 | |
14d55bce | 108 | Lisp_Object Vcompletion_ignored_extensions; |
32f4334d | 109 | Lisp_Object Qdirectory_files; |
4424b255 | 110 | Lisp_Object Qdirectory_files_and_attributes; |
32f4334d RS |
111 | Lisp_Object Qfile_name_completion; |
112 | Lisp_Object Qfile_name_all_completions; | |
434e6714 | 113 | Lisp_Object Qfile_attributes; |
4424b255 | 114 | Lisp_Object Qfile_attributes_lessp; |
b3f04ced RS |
115 | |
116 | static int scmp P_ ((unsigned char *, unsigned char *, int)); | |
14d55bce | 117 | \f |
2488aba5 AI |
118 | |
119 | Lisp_Object | |
120 | directory_files_internal_unwind (dh) | |
121 | Lisp_Object dh; | |
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 |
6b61353c | 136 | directory_files_internal (directory, full, match, nosort, attrs, id_format) |
23bd240f | 137 | Lisp_Object directory, full, match, nosort; |
4424b255 | 138 | int attrs; |
6b61353c | 139 | Lisp_Object id_format; |
14d55bce RS |
140 | { |
141 | DIR *d; | |
388ac098 GM |
142 | int directory_nbytes; |
143 | Lisp_Object list, dirfilename, encoded_directory; | |
6bbd7a29 | 144 | struct re_pattern_buffer *bufp = NULL; |
96d64004 | 145 | int needsep = 0; |
aed13378 | 146 | int count = SPECPDL_INDEX (); |
388ac098 | 147 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5; |
8e42f043 | 148 | DIRENTRY *dp; |
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 | |
d5db4077 | 197 | directory_nbytes = SBYTES (directory); |
c81a9bdc | 198 | re_match_object = Qt; |
14d55bce | 199 | |
96d64004 | 200 | /* Decide whether we need to add a directory separator. */ |
388ac098 | 201 | if (directory_nbytes == 0 |
d5db4077 | 202 | || !IS_ANY_SEP (SREF (directory, directory_nbytes - 1))) |
96d64004 | 203 | needsep = 1; |
96d64004 | 204 | |
8e42f043 | 205 | /* Loop reading blocks until EOF or error. */ |
f69f9da1 | 206 | for (;;) |
14d55bce | 207 | { |
f69f9da1 GM |
208 | errno = 0; |
209 | dp = readdir (d); | |
210 | ||
9d291bdf | 211 | if (dp == NULL && (0 |
f69f9da1 | 212 | #ifdef EAGAIN |
9d291bdf SM |
213 | || errno == EAGAIN |
214 | #endif | |
215 | #ifdef EINTR | |
216 | || errno == EINTR | |
f69f9da1 | 217 | #endif |
9d291bdf SM |
218 | )) |
219 | { QUIT; continue; } | |
177c0ea7 | 220 | |
f69f9da1 GM |
221 | if (dp == NULL) |
222 | break; | |
223 | ||
128ecc89 | 224 | if (DIRENTRY_NONEMPTY (dp)) |
14d55bce | 225 | { |
e23f810c | 226 | int len; |
2488aba5 | 227 | int wanted = 0; |
388ac098 GM |
228 | Lisp_Object name, finalname; |
229 | struct gcpro gcpro1, gcpro2; | |
e23f810c KH |
230 | |
231 | len = NAMLEN (dp); | |
9ad4f3e5 | 232 | name = finalname = make_unibyte_string (dp->d_name, len); |
388ac098 | 233 | GCPRO2 (finalname, name); |
177c0ea7 | 234 | |
6c8b4f07 | 235 | /* Note: DECODE_FILE can GC; it should protect its argument, |
388ac098 GM |
236 | though. */ |
237 | name = DECODE_FILE (name); | |
d5db4077 | 238 | len = SBYTES (name); |
e23f810c | 239 | |
2488aba5 AI |
240 | /* Now that we have unwind_protect in place, we might as well |
241 | allow matching to be interrupted. */ | |
242 | immediate_quit = 1; | |
243 | QUIT; | |
244 | ||
265a9e55 | 245 | if (NILP (match) |
d5db4077 | 246 | || (0 <= re_search (bufp, SDATA (name), len, 0, len, 0))) |
388ac098 | 247 | wanted = 1; |
2488aba5 AI |
248 | |
249 | immediate_quit = 0; | |
250 | ||
251 | if (wanted) | |
14d55bce | 252 | { |
265a9e55 | 253 | if (!NILP (full)) |
14d55bce | 254 | { |
e23f810c | 255 | Lisp_Object fullname; |
388ac098 GM |
256 | int nbytes = len + directory_nbytes + needsep; |
257 | int nchars; | |
5617588f | 258 | |
388ac098 | 259 | fullname = make_uninit_multibyte_string (nbytes, nbytes); |
d5db4077 | 260 | bcopy (SDATA (directory), SDATA (fullname), |
388ac098 | 261 | directory_nbytes); |
177c0ea7 | 262 | |
5617588f | 263 | if (needsep) |
d549c5db | 264 | SSET (fullname, directory_nbytes, DIRECTORY_SEP); |
177c0ea7 | 265 | |
d5db4077 KR |
266 | bcopy (SDATA (name), |
267 | SDATA (fullname) + directory_nbytes + needsep, | |
388ac098 | 268 | len); |
177c0ea7 | 269 | |
d5db4077 | 270 | nchars = chars_in_text (SDATA (fullname), nbytes); |
388ac098 GM |
271 | |
272 | /* Some bug somewhere. */ | |
273 | if (nchars > nbytes) | |
274 | abort (); | |
177c0ea7 | 275 | |
437fcd47 | 276 | STRING_SET_CHARS (fullname, nchars); |
388ac098 | 277 | if (nchars == nbytes) |
d5db4077 | 278 | STRING_SET_UNIBYTE (fullname); |
177c0ea7 | 279 | |
4424b255 GV |
280 | finalname = fullname; |
281 | } | |
aab9c564 KH |
282 | else |
283 | finalname = name; | |
4424b255 GV |
284 | |
285 | if (attrs) | |
286 | { | |
287 | /* Construct an expanded filename for the directory entry. | |
288 | Use the decoded names for input to Ffile_attributes. */ | |
388ac098 GM |
289 | Lisp_Object decoded_fullname, fileattrs; |
290 | struct gcpro gcpro1, gcpro2; | |
291 | ||
292 | decoded_fullname = fileattrs = Qnil; | |
293 | GCPRO2 (decoded_fullname, fileattrs); | |
4424b255 | 294 | |
388ac098 | 295 | /* Both Fexpand_file_name and Ffile_attributes can GC. */ |
4424b255 | 296 | decoded_fullname = Fexpand_file_name (name, directory); |
6b61353c | 297 | fileattrs = Ffile_attributes (decoded_fullname, id_format); |
4424b255 GV |
298 | |
299 | list = Fcons (Fcons (finalname, fileattrs), list); | |
388ac098 | 300 | UNGCPRO; |
4424b255 GV |
301 | } |
302 | else | |
388ac098 | 303 | list = Fcons (finalname, list); |
14d55bce | 304 | } |
388ac098 GM |
305 | |
306 | UNGCPRO; | |
14d55bce RS |
307 | } |
308 | } | |
2488aba5 | 309 | |
d15b573e | 310 | BLOCK_INPUT; |
14d55bce | 311 | closedir (d); |
d15b573e | 312 | UNBLOCK_INPUT; |
2488aba5 AI |
313 | |
314 | /* Discard the unwind protect. */ | |
315 | specpdl_ptr = specpdl + count; | |
316 | ||
388ac098 GM |
317 | if (NILP (nosort)) |
318 | list = Fsort (Fnreverse (list), | |
319 | attrs ? Qfile_attributes_lessp : Qstring_lessp); | |
177c0ea7 | 320 | |
388ac098 | 321 | RETURN_UNGCPRO (list); |
14d55bce | 322 | } |
4424b255 GV |
323 | |
324 | ||
325 | DEFUN ("directory-files", Fdirectory_files, Sdirectory_files, 1, 4, 0, | |
335c5470 PJ |
326 | doc: /* Return a list of names of files in DIRECTORY. |
327 | There are three optional arguments: | |
328 | If FULL is non-nil, return absolute file names. Otherwise return names | |
329 | that are relative to the specified directory. | |
330 | If MATCH is non-nil, mention only file names that match the regexp MATCH. | |
331 | If NOSORT is non-nil, the list is not sorted--its order is unpredictable. | |
e933b15e CY |
332 | Otherwise, the list returned is sorted with `stringp-lessp'. |
333 | NOSORT is useful if you plan to sort the result yourself. */) | |
335c5470 | 334 | (directory, full, match, nosort) |
4424b255 GV |
335 | Lisp_Object directory, full, match, nosort; |
336 | { | |
337 | Lisp_Object handler; | |
4ece81a6 | 338 | directory = Fexpand_file_name (directory, Qnil); |
4424b255 GV |
339 | |
340 | /* If the file name has special constructs in it, | |
341 | call the corresponding file handler. */ | |
342 | handler = Ffind_file_name_handler (directory, Qdirectory_files); | |
343 | if (!NILP (handler)) | |
6b61353c KH |
344 | return call5 (handler, Qdirectory_files, directory, |
345 | full, match, nosort); | |
4424b255 | 346 | |
6b61353c | 347 | return directory_files_internal (directory, full, match, nosort, 0, Qnil); |
4424b255 GV |
348 | } |
349 | ||
335c5470 | 350 | DEFUN ("directory-files-and-attributes", Fdirectory_files_and_attributes, |
6b61353c | 351 | Sdirectory_files_and_attributes, 1, 5, 0, |
335c5470 | 352 | doc: /* Return a list of names of files and their attributes in DIRECTORY. |
6b61353c | 353 | There are four optional arguments: |
335c5470 PJ |
354 | If FULL is non-nil, return absolute file names. Otherwise return names |
355 | that are relative to the specified directory. | |
356 | If MATCH is non-nil, mention only file names that match the regexp MATCH. | |
357 | If NOSORT is non-nil, the list is not sorted--its order is unpredictable. | |
6b61353c KH |
358 | NOSORT is useful if you plan to sort the result yourself. |
359 | ID-FORMAT specifies the preferred format of attributes uid and gid, see | |
6c5665e9 EZ |
360 | `file-attributes' for further documentation. |
361 | On MS-Windows, performance depends on `w32-get-true-file-attributes', | |
362 | which see. */) | |
6b61353c KH |
363 | (directory, full, match, nosort, id_format) |
364 | Lisp_Object directory, full, match, nosort, id_format; | |
4424b255 GV |
365 | { |
366 | Lisp_Object handler; | |
4ece81a6 | 367 | directory = Fexpand_file_name (directory, Qnil); |
4424b255 GV |
368 | |
369 | /* If the file name has special constructs in it, | |
370 | call the corresponding file handler. */ | |
371 | handler = Ffind_file_name_handler (directory, Qdirectory_files_and_attributes); | |
372 | if (!NILP (handler)) | |
6b61353c KH |
373 | return call6 (handler, Qdirectory_files_and_attributes, |
374 | directory, full, match, nosort, id_format); | |
4424b255 | 375 | |
6b61353c | 376 | return directory_files_internal (directory, full, match, nosort, 1, id_format); |
4424b255 GV |
377 | } |
378 | ||
14d55bce RS |
379 | \f |
380 | Lisp_Object file_name_completion (); | |
381 | ||
382 | DEFUN ("file-name-completion", Ffile_name_completion, Sfile_name_completion, | |
abfb1932 | 383 | 2, 3, 0, |
335c5470 PJ |
384 | doc: /* Complete file name FILE in directory DIRECTORY. |
385 | Returns the longest string | |
386 | common to all file names in DIRECTORY that start with FILE. | |
387 | If there is only one and FILE matches it exactly, returns t. | |
2f60660a | 388 | Returns nil if DIRECTORY contains no name starting with FILE. |
335c5470 | 389 | |
b6ce54d6 RS |
390 | If PREDICATE is non-nil, call PREDICATE with each possible |
391 | completion (in absolute form) and ignore it if PREDICATE returns nil. | |
392 | ||
335c5470 PJ |
393 | This function ignores some of the possible completions as |
394 | determined by the variable `completion-ignored-extensions', which see. */) | |
abfb1932 RS |
395 | (file, directory, predicate) |
396 | Lisp_Object file, directory, predicate; | |
14d55bce | 397 | { |
32f4334d | 398 | Lisp_Object handler; |
32f4334d | 399 | |
8436e231 | 400 | /* If the directory name has special constructs in it, |
32f4334d | 401 | call the corresponding file handler. */ |
23bd240f | 402 | handler = Ffind_file_name_handler (directory, Qfile_name_completion); |
32f4334d | 403 | if (!NILP (handler)) |
abfb1932 | 404 | return call4 (handler, Qfile_name_completion, file, directory, predicate); |
32f4334d | 405 | |
8436e231 RS |
406 | /* If the file name has special constructs in it, |
407 | call the corresponding file handler. */ | |
408 | handler = Ffind_file_name_handler (file, Qfile_name_completion); | |
409 | if (!NILP (handler)) | |
abfb1932 | 410 | return call4 (handler, Qfile_name_completion, file, directory, predicate); |
8436e231 | 411 | |
abfb1932 | 412 | return file_name_completion (file, directory, 0, 0, predicate); |
14d55bce RS |
413 | } |
414 | ||
415 | DEFUN ("file-name-all-completions", Ffile_name_all_completions, | |
335c5470 PJ |
416 | Sfile_name_all_completions, 2, 2, 0, |
417 | doc: /* Return a list of all completions of file name FILE in directory DIRECTORY. | |
418 | These are all file names in directory DIRECTORY which begin with FILE. */) | |
419 | (file, directory) | |
23bd240f | 420 | Lisp_Object file, directory; |
14d55bce | 421 | { |
32f4334d RS |
422 | Lisp_Object handler; |
423 | ||
8436e231 | 424 | /* If the directory name has special constructs in it, |
32f4334d | 425 | call the corresponding file handler. */ |
23bd240f | 426 | handler = Ffind_file_name_handler (directory, Qfile_name_all_completions); |
32f4334d | 427 | if (!NILP (handler)) |
23bd240f | 428 | return call3 (handler, Qfile_name_all_completions, file, directory); |
32f4334d | 429 | |
8436e231 RS |
430 | /* If the file name has special constructs in it, |
431 | call the corresponding file handler. */ | |
432 | handler = Ffind_file_name_handler (file, Qfile_name_all_completions); | |
433 | if (!NILP (handler)) | |
23bd240f | 434 | return call3 (handler, Qfile_name_all_completions, file, directory); |
8436e231 | 435 | |
abfb1932 | 436 | return file_name_completion (file, directory, 1, 0, Qnil); |
14d55bce RS |
437 | } |
438 | ||
dfcf069d | 439 | static int file_name_completion_stat (); |
01bb4018 | 440 | Lisp_Object Qdefault_directory; |
dfcf069d | 441 | |
14d55bce | 442 | Lisp_Object |
abfb1932 | 443 | file_name_completion (file, dirname, all_flag, ver_flag, predicate) |
14d55bce RS |
444 | Lisp_Object file, dirname; |
445 | int all_flag, ver_flag; | |
abfb1932 | 446 | Lisp_Object predicate; |
14d55bce RS |
447 | { |
448 | DIR *d; | |
3271a8f5 | 449 | int bestmatchsize = 0; |
14d55bce | 450 | int matchcount = 0; |
abfb1932 RS |
451 | /* If ALL_FLAG is 1, BESTMATCH is the list of all matches, decoded. |
452 | If ALL_FLAG is 0, BESTMATCH is either nil | |
453 | or the best match so far, not decoded. */ | |
14d55bce | 454 | Lisp_Object bestmatch, tem, elt, name; |
24c2a54f RS |
455 | Lisp_Object encoded_file; |
456 | Lisp_Object encoded_dir; | |
14d55bce RS |
457 | struct stat st; |
458 | int directoryp; | |
3271a8f5 SM |
459 | /* If includeall is zero, exclude files in completion-ignored-extensions as |
460 | well as "." and "..". Until shown otherwise, assume we can't exclude | |
461 | anything. */ | |
462 | int includeall = 1; | |
aed13378 | 463 | int count = SPECPDL_INDEX (); |
24c2a54f | 464 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5; |
3fcc88cc | 465 | |
6bbd7a29 GM |
466 | elt = Qnil; |
467 | ||
b7826503 | 468 | CHECK_STRING (file); |
14d55bce | 469 | |
128ecc89 RS |
470 | #ifdef FILE_SYSTEM_CASE |
471 | file = FILE_SYSTEM_CASE (file); | |
472 | #endif | |
14d55bce | 473 | bestmatch = Qnil; |
24c2a54f RS |
474 | encoded_file = encoded_dir = Qnil; |
475 | GCPRO5 (file, dirname, bestmatch, encoded_file, encoded_dir); | |
3fcc88cc | 476 | dirname = Fexpand_file_name (dirname, Qnil); |
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 RS |
486 | |
487 | encoded_dir = ENCODE_FILE (dirname); | |
488 | ||
3271a8f5 SM |
489 | BLOCK_INPUT; |
490 | d = opendir (SDATA (Fdirectory_file_name (encoded_dir))); | |
491 | UNBLOCK_INPUT; | |
492 | if (!d) | |
493 | report_file_error ("Opening directory", Fcons (dirname, Qnil)); | |
14d55bce | 494 | |
3271a8f5 SM |
495 | record_unwind_protect (directory_files_internal_unwind, |
496 | make_save_value (d, 0)); | |
14d55bce | 497 | |
3271a8f5 SM |
498 | /* Loop reading blocks */ |
499 | /* (att3b compiler bug requires do a null comparison this way) */ | |
500 | while (1) | |
14d55bce | 501 | { |
3271a8f5 SM |
502 | DIRENTRY *dp; |
503 | int len; | |
504 | int canexclude = 0; | |
14d55bce | 505 | |
3271a8f5 SM |
506 | errno = 0; |
507 | dp = readdir (d); | |
508 | if (dp == NULL && (0 | |
9d291bdf | 509 | # ifdef EAGAIN |
3271a8f5 | 510 | || errno == EAGAIN |
9d291bdf SM |
511 | # endif |
512 | # ifdef EINTR | |
3271a8f5 | 513 | || errno == EINTR |
9d291bdf | 514 | # endif |
3271a8f5 SM |
515 | )) |
516 | { QUIT; continue; } | |
9d291bdf | 517 | |
3271a8f5 | 518 | if (!dp) break; |
14d55bce | 519 | |
3271a8f5 | 520 | len = NAMLEN (dp); |
14d55bce | 521 | |
3271a8f5 SM |
522 | QUIT; |
523 | if (! DIRENTRY_NONEMPTY (dp) | |
524 | || len < SCHARS (encoded_file) | |
525 | || 0 <= scmp (dp->d_name, SDATA (encoded_file), | |
526 | SCHARS (encoded_file))) | |
527 | continue; | |
14d55bce | 528 | |
3271a8f5 SM |
529 | if (file_name_completion_stat (encoded_dir, dp, &st) < 0) |
530 | continue; | |
14d55bce | 531 | |
3271a8f5 SM |
532 | directoryp = ((st.st_mode & S_IFMT) == S_IFDIR); |
533 | tem = Qnil; | |
534 | /* If all_flag is set, always include all. | |
535 | It would not actually be helpful to the user to ignore any possible | |
536 | completions when making a list of them. */ | |
537 | if (!all_flag) | |
538 | { | |
539 | int skip; | |
2cd298e2 | 540 | |
7519c40d | 541 | #if 0 /* FIXME: The `scmp' call compares an encoded and a decoded string. */ |
2cd298e2 SM |
542 | /* If this entry matches the current bestmatch, the only |
543 | thing it can do is increase matchcount, so don't bother | |
544 | investigating it any further. */ | |
545 | if (!completion_ignore_case | |
546 | /* The return result depends on whether it's the sole match. */ | |
547 | && matchcount > 1 | |
548 | && !includeall /* This match may allow includeall to 0. */ | |
549 | && len >= bestmatchsize | |
550 | && 0 > scmp (dp->d_name, SDATA (bestmatch), bestmatchsize)) | |
551 | continue; | |
7519c40d | 552 | #endif |
2cd298e2 | 553 | |
3271a8f5 | 554 | if (directoryp) |
ad456ad4 RS |
555 | { |
556 | #ifndef TRIVIAL_DIRECTORY_ENTRY | |
557 | #define TRIVIAL_DIRECTORY_ENTRY(n) (!strcmp (n, ".") || !strcmp (n, "..")) | |
558 | #endif | |
abfb1932 RS |
559 | /* "." and ".." are never interesting as completions, and are |
560 | actually in the way in a directory with only one file. */ | |
3271a8f5 SM |
561 | if (TRIVIAL_DIRECTORY_ENTRY (dp->d_name)) |
562 | canexclude = 1; | |
563 | else if (len > SCHARS (encoded_file)) | |
d013f29b EZ |
564 | /* Ignore directories if they match an element of |
565 | completion-ignored-extensions which ends in a slash. */ | |
566 | for (tem = Vcompletion_ignored_extensions; | |
567 | CONSP (tem); tem = XCDR (tem)) | |
568 | { | |
569 | int elt_len; | |
2a54a229 | 570 | unsigned char *p1; |
d013f29b EZ |
571 | |
572 | elt = XCAR (tem); | |
573 | if (!STRINGP (elt)) | |
574 | continue; | |
a74aaa9d EZ |
575 | /* Need to encode ELT, since scmp compares unibyte |
576 | strings only. */ | |
577 | elt = ENCODE_FILE (elt); | |
d5db4077 | 578 | elt_len = SCHARS (elt) - 1; /* -1 for trailing / */ |
7a8d465a | 579 | if (elt_len <= 0) |
d013f29b | 580 | continue; |
d5db4077 | 581 | p1 = SDATA (elt); |
d013f29b EZ |
582 | if (p1[elt_len] != '/') |
583 | continue; | |
584 | skip = len - elt_len; | |
585 | if (skip < 0) | |
586 | continue; | |
587 | ||
588 | if (0 <= scmp (dp->d_name + skip, p1, elt_len)) | |
589 | continue; | |
590 | break; | |
591 | } | |
ad456ad4 RS |
592 | } |
593 | else | |
3271a8f5 | 594 | { |
14d55bce RS |
595 | /* Compare extensions-to-be-ignored against end of this file name */ |
596 | /* if name is not an exact match against specified string */ | |
3271a8f5 | 597 | if (len > SCHARS (encoded_file)) |
14d55bce RS |
598 | /* and exit this for loop if a match is found */ |
599 | for (tem = Vcompletion_ignored_extensions; | |
70949dac | 600 | CONSP (tem); tem = XCDR (tem)) |
14d55bce | 601 | { |
70949dac | 602 | elt = XCAR (tem); |
88cf1852 | 603 | if (!STRINGP (elt)) continue; |
a74aaa9d EZ |
604 | /* Need to encode ELT, since scmp compares unibyte |
605 | strings only. */ | |
606 | elt = ENCODE_FILE (elt); | |
d5db4077 | 607 | skip = len - SCHARS (elt); |
14d55bce RS |
608 | if (skip < 0) continue; |
609 | ||
610 | if (0 <= scmp (dp->d_name + skip, | |
d5db4077 KR |
611 | SDATA (elt), |
612 | SCHARS (elt))) | |
14d55bce RS |
613 | continue; |
614 | break; | |
615 | } | |
616 | } | |
617 | ||
f676868d KH |
618 | /* If an ignored-extensions match was found, |
619 | don't process this name as a completion. */ | |
3271a8f5 SM |
620 | if (CONSP (tem)) |
621 | canexclude = 1; | |
f676868d | 622 | |
3271a8f5 SM |
623 | if (!includeall && canexclude) |
624 | /* We're not including all files and this file can be excluded. */ | |
625 | continue; | |
9c691c00 | 626 | |
3271a8f5 SM |
627 | if (includeall && !canexclude) |
628 | { /* If we have one non-excludable file, we want to exclude the | |
629 | excudable files. */ | |
630 | includeall = 0; | |
631 | /* Throw away any previous excludable match found. */ | |
632 | bestmatch = Qnil; | |
633 | bestmatchsize = 0; | |
634 | matchcount = 0; | |
f676868d | 635 | } |
3271a8f5 SM |
636 | } |
637 | /* FIXME: If we move this `decode' earlier we can eliminate | |
638 | the repeated ENCODE_FILE on Vcompletion_ignored_extensions. */ | |
639 | name = make_unibyte_string (dp->d_name, len); | |
640 | name = DECODE_FILE (name); | |
641 | ||
642 | { | |
643 | Lisp_Object regexps; | |
644 | Lisp_Object zero; | |
645 | XSETFASTINT (zero, 0); | |
646 | ||
647 | /* Ignore this element if it fails to match all the regexps. */ | |
cc524e3b CY |
648 | if (completion_ignore_case) |
649 | { | |
650 | for (regexps = Vcompletion_regexp_list; CONSP (regexps); | |
651 | regexps = XCDR (regexps)) | |
652 | if (fast_string_match_ignore_case (XCAR (regexps), name) < 0) | |
653 | break; | |
654 | } | |
655 | else | |
656 | { | |
657 | for (regexps = Vcompletion_regexp_list; CONSP (regexps); | |
658 | regexps = XCDR (regexps)) | |
659 | if (fast_string_match (XCAR (regexps), name) < 0) | |
660 | break; | |
661 | } | |
662 | ||
3271a8f5 SM |
663 | if (CONSP (regexps)) |
664 | continue; | |
665 | } | |
666 | ||
667 | /* This is a possible completion */ | |
668 | if (directoryp) | |
669 | /* This completion is a directory; make it end with '/'. */ | |
670 | name = Ffile_name_as_directory (name); | |
671 | ||
672 | /* Test the predicate, if any. */ | |
673 | if (!NILP (predicate)) | |
674 | { | |
675 | Lisp_Object val; | |
676 | struct gcpro gcpro1; | |
14d55bce | 677 | |
3271a8f5 SM |
678 | GCPRO1 (name); |
679 | val = call1 (predicate, name); | |
680 | UNGCPRO; | |
c4c52bb7 | 681 | |
3271a8f5 SM |
682 | if (NILP (val)) |
683 | continue; | |
684 | } | |
abfb1932 | 685 | |
3271a8f5 | 686 | /* Suitably record this match. */ |
14d55bce | 687 | |
3271a8f5 | 688 | matchcount++; |
f676868d | 689 | |
3271a8f5 SM |
690 | if (all_flag) |
691 | bestmatch = Fcons (name, bestmatch); | |
692 | else if (NILP (bestmatch)) | |
693 | { | |
694 | bestmatch = name; | |
695 | bestmatchsize = SCHARS (name); | |
696 | } | |
697 | else | |
698 | { | |
699 | Lisp_Object zero = make_number (0); | |
700 | /* FIXME: This is a copy of the code in Ftry_completion. */ | |
701 | int compare = min (bestmatchsize, SCHARS (name)); | |
702 | Lisp_Object tem | |
703 | = Fcompare_strings (bestmatch, zero, | |
704 | make_number (compare), | |
705 | name, zero, | |
706 | make_number (compare), | |
707 | completion_ignore_case ? Qt : Qnil); | |
708 | int matchsize | |
709 | = (EQ (tem, Qt) ? compare | |
710 | : XINT (tem) < 0 ? - XINT (tem) - 1 | |
711 | : XINT (tem) - 1); | |
712 | ||
713 | if (completion_ignore_case) | |
f676868d | 714 | { |
3271a8f5 SM |
715 | /* If this is an exact match except for case, |
716 | use it as the best match rather than one that is not | |
717 | an exact match. This way, we get the case pattern | |
718 | of the actual match. */ | |
719 | /* This tests that the current file is an exact match | |
720 | but BESTMATCH is not (it is too long). */ | |
721 | if ((matchsize == SCHARS (name) | |
2cd298e2 | 722 | && matchsize + !!directoryp < SCHARS (bestmatch)) |
3271a8f5 SM |
723 | || |
724 | /* If there is no exact match ignoring case, | |
725 | prefer a match that does not change the case | |
726 | of the input. */ | |
727 | /* If there is more than one exact match aside from | |
728 | case, and one of them is exact including case, | |
729 | prefer that one. */ | |
730 | /* This == checks that, of current file and BESTMATCH, | |
731 | either both or neither are exact. */ | |
732 | (((matchsize == SCHARS (name)) | |
733 | == | |
734 | (matchsize + !!directoryp == SCHARS (bestmatch))) | |
735 | && (tem = Fcompare_strings (name, zero, | |
736 | make_number (SCHARS (file)), | |
737 | file, zero, | |
738 | Qnil, | |
739 | Qnil), | |
740 | EQ (Qt, tem)) | |
741 | && (tem = Fcompare_strings (bestmatch, zero, | |
742 | make_number (SCHARS (file)), | |
743 | file, zero, | |
744 | Qnil, | |
745 | Qnil), | |
746 | ! EQ (Qt, tem)))) | |
747 | bestmatch = name; | |
14d55bce | 748 | } |
3271a8f5 | 749 | bestmatchsize = matchsize; |
2cd298e2 SM |
750 | |
751 | /* If the best completion so far is reduced to the string | |
752 | we're trying to complete, then we already know there's no | |
753 | other completion, so there's no point looking any further. */ | |
754 | if (matchsize <= SCHARS (file) | |
755 | && !includeall /* A future match may allow includeall to 0. */ | |
756 | /* If completion-ignore-case is non-nil, don't | |
757 | short-circuit because we want to find the best | |
758 | possible match *including* case differences. */ | |
759 | && (!completion_ignore_case || matchsize == 0) | |
760 | /* The return value depends on whether it's the sole match. */ | |
761 | && matchcount > 1) | |
762 | break; | |
763 | ||
14d55bce | 764 | } |
14d55bce RS |
765 | } |
766 | ||
3fcc88cc | 767 | UNGCPRO; |
3271a8f5 | 768 | /* This closes the directory. */ |
c3a3229c | 769 | bestmatch = unbind_to (count, bestmatch); |
14d55bce | 770 | |
265a9e55 | 771 | if (all_flag || NILP (bestmatch)) |
2a54a229 | 772 | return bestmatch; |
928b5acc SM |
773 | /* Return t if the supplied string is an exact match (counting case); |
774 | it does not require any change to be made. */ | |
775 | if (matchcount == 1 && !NILP (Fequal (bestmatch, file))) | |
14d55bce | 776 | return Qt; |
24c2a54f RS |
777 | bestmatch = Fsubstring (bestmatch, make_number (0), |
778 | make_number (bestmatchsize)); | |
24c2a54f | 779 | return bestmatch; |
14d55bce RS |
780 | } |
781 | ||
b3f04ced RS |
782 | /* Compare exactly LEN chars of strings at S1 and S2, |
783 | ignoring case if appropriate. | |
784 | Return -1 if strings match, | |
785 | else number of chars that match at the beginning. */ | |
786 | ||
787 | static int | |
788 | scmp (s1, s2, len) | |
789 | register unsigned char *s1, *s2; | |
790 | int len; | |
791 | { | |
792 | register int l = len; | |
793 | ||
794 | if (completion_ignore_case) | |
795 | { | |
796 | while (l && DOWNCASE (*s1++) == DOWNCASE (*s2++)) | |
797 | l--; | |
798 | } | |
799 | else | |
800 | { | |
801 | while (l && *s1++ == *s2++) | |
802 | l--; | |
803 | } | |
804 | if (l == 0) | |
805 | return -1; | |
806 | else | |
807 | return len - l; | |
808 | } | |
809 | ||
dfcf069d | 810 | static int |
14d55bce RS |
811 | file_name_completion_stat (dirname, dp, st_addr) |
812 | Lisp_Object dirname; | |
813 | DIRENTRY *dp; | |
814 | struct stat *st_addr; | |
815 | { | |
816 | int len = NAMLEN (dp); | |
d5db4077 | 817 | int pos = SCHARS (dirname); |
7e3cf34f | 818 | int value; |
14d55bce RS |
819 | char *fullname = (char *) alloca (len + pos + 2); |
820 | ||
04924ee3 RS |
821 | #ifdef MSDOS |
822 | #if __DJGPP__ > 1 | |
823 | /* Some fields of struct stat are *very* expensive to compute on MS-DOS, | |
824 | but aren't required here. Avoid computing the following fields: | |
825 | st_inode, st_size and st_nlink for directories, and the execute bits | |
826 | in st_mode for non-directory files with non-standard extensions. */ | |
827 | ||
828 | unsigned short save_djstat_flags = _djstat_flags; | |
829 | ||
830 | _djstat_flags = _STAT_INODE | _STAT_EXEC_MAGIC | _STAT_DIRSIZE; | |
831 | #endif /* __DJGPP__ > 1 */ | |
832 | #endif /* MSDOS */ | |
833 | ||
d5db4077 | 834 | bcopy (SDATA (dirname), fullname, pos); |
0b39d75d RS |
835 | if (!IS_DIRECTORY_SEP (fullname[pos - 1])) |
836 | fullname[pos++] = DIRECTORY_SEP; | |
14d55bce RS |
837 | |
838 | bcopy (dp->d_name, fullname + pos, len); | |
839 | fullname[pos + len] = 0; | |
840 | ||
a889bd0e | 841 | #ifdef S_IFLNK |
7e3cf34f RS |
842 | /* We want to return success if a link points to a nonexistent file, |
843 | but we want to return the status for what the link points to, | |
844 | in case it is a directory. */ | |
845 | value = lstat (fullname, st_addr); | |
846 | stat (fullname, st_addr); | |
847 | return value; | |
a889bd0e | 848 | #else |
04924ee3 RS |
849 | value = stat (fullname, st_addr); |
850 | #ifdef MSDOS | |
851 | #if __DJGPP__ > 1 | |
852 | _djstat_flags = save_djstat_flags; | |
853 | #endif /* __DJGPP__ > 1 */ | |
854 | #endif /* MSDOS */ | |
855 | return value; | |
856 | #endif /* S_IFLNK */ | |
14d55bce RS |
857 | } |
858 | \f | |
859 | Lisp_Object | |
860 | make_time (time) | |
e5124be7 | 861 | time_t time; |
14d55bce RS |
862 | { |
863 | return Fcons (make_number (time >> 16), | |
864 | Fcons (make_number (time & 0177777), Qnil)); | |
865 | } | |
866 | ||
8aaaec6b EZ |
867 | static char * |
868 | stat_uname (struct stat *st) | |
869 | { | |
870 | #ifdef WINDOWSNT | |
871 | return st->st_uname; | |
872 | #else | |
873 | struct passwd *pw = (struct passwd *) getpwuid (st->st_uid); | |
874 | ||
875 | if (pw) | |
876 | return pw->pw_name; | |
877 | else | |
878 | return NULL; | |
879 | #endif | |
880 | } | |
881 | ||
882 | static char * | |
883 | stat_gname (struct stat *st) | |
884 | { | |
885 | #ifdef WINDOWSNT | |
886 | return st->st_gname; | |
887 | #else | |
888 | struct group *gr = (struct group *) getgrgid (st->st_gid); | |
889 | ||
890 | if (gr) | |
891 | return gr->gr_name; | |
892 | else | |
893 | return NULL; | |
894 | #endif | |
895 | } | |
896 | ||
6b61353c | 897 | DEFUN ("file-attributes", Ffile_attributes, Sfile_attributes, 1, 2, 0, |
335c5470 PJ |
898 | doc: /* Return a list of attributes of file FILENAME. |
899 | Value is nil if specified file cannot be opened. | |
6b61353c KH |
900 | |
901 | ID-FORMAT specifies the preferred format of attributes uid and gid (see | |
902 | below) - valid values are 'string and 'integer. The latter is the default, | |
903 | but we plan to change that, so you should specify a non-nil value for | |
904 | ID-FORMAT if you use the returned uid or gid. | |
905 | ||
906 | Elements of the attribute list are: | |
335c5470 PJ |
907 | 0. t for directory, string (name linked to) for symbolic link, or nil. |
908 | 1. Number of links to file. | |
6b61353c KH |
909 | 2. File uid as a string or an integer. If a string value cannot be |
910 | looked up, the integer value is returned. | |
911 | 3. File gid, likewise. | |
335c5470 PJ |
912 | 4. Last access time, as a list of two integers. |
913 | First integer has high-order 16 bits of time, second has low 16 bits. | |
914 | 5. Last modification time, likewise. | |
915 | 6. Last status change time, likewise. | |
916 | 7. Size in bytes. | |
917 | This is a floating point number if the size is too large for an integer. | |
918 | 8. File modes, as a string of ten letters or dashes as in ls -l. | |
e0f24100 | 919 | 9. t if file's gid would change if file were deleted and recreated. |
335c5470 | 920 | 10. inode number. If inode number is larger than the Emacs integer, |
e058f331 EZ |
921 | but still fits into a 32-bit number, this is a cons cell containing two |
922 | integers: first the high part, then the low 16 bits. If the inode number | |
923 | is wider than 32 bits, this is a cons cell containing three integers: | |
924 | first the high 24 bits, then middle 24 bits, and finally the low 16 bits. | |
335c5470 | 925 | 11. Device number. If it is larger than the Emacs integer, this is |
6c5665e9 EZ |
926 | a cons cell, similar to the inode number. |
927 | ||
928 | On MS-Windows, performance depends on `w32-get-true-file-attributes', | |
929 | which see. */) | |
6b61353c KH |
930 | (filename, id_format) |
931 | Lisp_Object filename, id_format; | |
14d55bce RS |
932 | { |
933 | Lisp_Object values[12]; | |
24c2a54f | 934 | Lisp_Object encoded; |
14d55bce | 935 | struct stat s; |
0a974c85 | 936 | #if defined (BSD4_2) || defined (BSD4_3) |
b3edfc9b | 937 | Lisp_Object dirname; |
14d55bce | 938 | struct stat sdir; |
b3edfc9b | 939 | #endif |
14d55bce | 940 | char modes[10]; |
32f4334d | 941 | Lisp_Object handler; |
7435aef8 | 942 | struct gcpro gcpro1; |
1cab27d2 | 943 | EMACS_INT ino, uid, gid; |
8aaaec6b | 944 | char *uname, *gname; |
14d55bce RS |
945 | |
946 | filename = Fexpand_file_name (filename, Qnil); | |
32f4334d RS |
947 | |
948 | /* If the file name has special constructs in it, | |
949 | call the corresponding file handler. */ | |
a617e913 | 950 | handler = Ffind_file_name_handler (filename, Qfile_attributes); |
32f4334d | 951 | if (!NILP (handler)) |
6b61353c KH |
952 | { /* Only pass the extra arg if it is used to help backward compatibility |
953 | with old file handlers which do not implement the new arg. --Stef */ | |
954 | if (NILP (id_format)) | |
955 | return call2 (handler, Qfile_attributes, filename); | |
956 | else | |
957 | return call3 (handler, Qfile_attributes, filename, id_format); | |
958 | } | |
32f4334d | 959 | |
7435aef8 | 960 | GCPRO1 (filename); |
24c2a54f | 961 | encoded = ENCODE_FILE (filename); |
7435aef8 | 962 | UNGCPRO; |
24c2a54f | 963 | |
d5db4077 | 964 | if (lstat (SDATA (encoded), &s) < 0) |
14d55bce RS |
965 | return Qnil; |
966 | ||
967 | switch (s.st_mode & S_IFMT) | |
968 | { | |
969 | default: | |
970 | values[0] = Qnil; break; | |
971 | case S_IFDIR: | |
972 | values[0] = Qt; break; | |
973 | #ifdef S_IFLNK | |
974 | case S_IFLNK: | |
975 | values[0] = Ffile_symlink_p (filename); break; | |
976 | #endif | |
977 | } | |
978 | values[1] = make_number (s.st_nlink); | |
1cab27d2 EZ |
979 | uid = s.st_uid; |
980 | gid = s.st_gid; | |
6b61353c KH |
981 | if (NILP (id_format) || EQ (id_format, Qinteger)) |
982 | { | |
1cab27d2 EZ |
983 | values[2] = make_fixnum_or_float (uid); |
984 | values[3] = make_fixnum_or_float (gid); | |
6b61353c KH |
985 | } |
986 | else | |
987 | { | |
8c8a7c58 | 988 | BLOCK_INPUT; |
8aaaec6b EZ |
989 | uname = stat_uname (&s); |
990 | values[2] = (uname ? build_string (uname) | |
1cab27d2 | 991 | : make_fixnum_or_float (uid)); |
8aaaec6b EZ |
992 | gname = stat_gname (&s); |
993 | values[3] = (gname ? build_string (gname) | |
1cab27d2 | 994 | : make_fixnum_or_float (gid)); |
8c8a7c58 | 995 | UNBLOCK_INPUT; |
6b61353c | 996 | } |
14d55bce RS |
997 | values[4] = make_time (s.st_atime); |
998 | values[5] = make_time (s.st_mtime); | |
999 | values[6] = make_time (s.st_ctime); | |
68c45bf0 | 1000 | values[7] = make_number (s.st_size); |
cb1846b4 | 1001 | /* If the size is out of range for an integer, return a float. */ |
60fc6069 | 1002 | if (XINT (values[7]) != s.st_size) |
cb1846b4 | 1003 | values[7] = make_float ((double)s.st_size); |
4bc12672 JR |
1004 | /* If the size is negative, and its type is long, convert it back to |
1005 | positive. */ | |
1006 | if (s.st_size < 0 && sizeof (s.st_size) == sizeof (long)) | |
1007 | values[7] = make_float ((double) ((unsigned long) s.st_size)); | |
1008 | ||
14d55bce RS |
1009 | filemodestring (&s, modes); |
1010 | values[8] = make_string (modes, 10); | |
0a974c85 | 1011 | #if defined (BSD4_2) || defined (BSD4_3) /* file gid will be dir gid */ |
14d55bce | 1012 | dirname = Ffile_name_directory (filename); |
24c2a54f RS |
1013 | if (! NILP (dirname)) |
1014 | encoded = ENCODE_FILE (dirname); | |
d5db4077 | 1015 | if (! NILP (dirname) && stat (SDATA (encoded), &sdir) == 0) |
01388a3d | 1016 | values[9] = (sdir.st_gid != s.st_gid) ? Qt : Qnil; |
14d55bce RS |
1017 | else /* if we can't tell, assume worst */ |
1018 | values[9] = Qt; | |
1019 | #else /* file gid will be egid */ | |
01388a3d | 1020 | values[9] = (s.st_gid != getegid ()) ? Qt : Qnil; |
14d55bce | 1021 | #endif /* BSD4_2 (or BSD4_3) */ |
b55445d6 | 1022 | /* Shut up GCC warnings in FIXNUM_OVERFLOW_P below. */ |
e058f331 EZ |
1023 | if (sizeof (s.st_ino) > sizeof (ino)) |
1024 | ino = (EMACS_INT)(s.st_ino & 0xffffffff); | |
1025 | else | |
1026 | ino = s.st_ino; | |
1027 | if (!FIXNUM_OVERFLOW_P (ino) | |
1028 | && (sizeof (s.st_ino) <= sizeof (ino) || (s.st_ino & ~INTMASK) == 0)) | |
1029 | /* Keep the most common cases as integers. */ | |
1030 | values[10] = make_number (ino); | |
1031 | else if (sizeof (s.st_ino) <= sizeof (ino) | |
1032 | || ((s.st_ino >> 16) & ~INTMASK) == 0) | |
4c637faa RS |
1033 | /* To allow inode numbers larger than VALBITS, separate the bottom |
1034 | 16 bits. */ | |
e058f331 EZ |
1035 | values[10] = Fcons (make_number ((EMACS_INT)(s.st_ino >> 16)), |
1036 | make_number ((EMACS_INT)(s.st_ino & 0xffff))); | |
4c637faa | 1037 | else |
e058f331 EZ |
1038 | { |
1039 | /* To allow inode numbers beyond 32 bits, separate into 2 24-bit | |
ff8ddc7b | 1040 | high parts and a 16-bit bottom part. |
25ae5671 EZ |
1041 | The code on the next line avoids a compiler warning on |
1042 | systems where st_ino is 32 bit wide. (bug#766). */ | |
ff8ddc7b | 1043 | EMACS_INT high_ino = s.st_ino >> 31 >> 1; |
e058f331 EZ |
1044 | EMACS_INT low_ino = s.st_ino & 0xffffffff; |
1045 | ||
1046 | values[10] = Fcons (make_number (high_ino >> 8), | |
1047 | Fcons (make_number (((high_ino & 0xff) << 16) | |
1048 | + (low_ino >> 16)), | |
1049 | make_number (low_ino & 0xffff))); | |
1050 | } | |
68c45bf0 | 1051 | |
7412d429 EZ |
1052 | /* Likewise for device, but don't let it become negative. We used |
1053 | to use FIXNUM_OVERFLOW_P here, but that won't catch large | |
1054 | positive numbers such as 0xFFEEDDCC. */ | |
1055 | if ((EMACS_INT)s.st_dev < 0 | |
1056 | || (EMACS_INT)s.st_dev > MOST_POSITIVE_FIXNUM) | |
68c45bf0 PE |
1057 | values[11] = Fcons (make_number (s.st_dev >> 16), |
1058 | make_number (s.st_dev & 0xffff)); | |
1059 | else | |
1060 | values[11] = make_number (s.st_dev); | |
1061 | ||
14d55bce RS |
1062 | return Flist (sizeof(values) / sizeof(values[0]), values); |
1063 | } | |
4424b255 GV |
1064 | |
1065 | DEFUN ("file-attributes-lessp", Ffile_attributes_lessp, Sfile_attributes_lessp, 2, 2, 0, | |
335c5470 PJ |
1066 | doc: /* Return t if first arg file attributes list is less than second. |
1067 | Comparison is in lexicographic order and case is significant. */) | |
1068 | (f1, f2) | |
4424b255 GV |
1069 | Lisp_Object f1, f2; |
1070 | { | |
1071 | return Fstring_lessp (Fcar (f1), Fcar (f2)); | |
1072 | } | |
14d55bce | 1073 | \f |
dfcf069d | 1074 | void |
14d55bce RS |
1075 | syms_of_dired () |
1076 | { | |
32f4334d | 1077 | Qdirectory_files = intern ("directory-files"); |
4424b255 | 1078 | Qdirectory_files_and_attributes = intern ("directory-files-and-attributes"); |
32f4334d RS |
1079 | Qfile_name_completion = intern ("file-name-completion"); |
1080 | Qfile_name_all_completions = intern ("file-name-all-completions"); | |
434e6714 | 1081 | Qfile_attributes = intern ("file-attributes"); |
4424b255 | 1082 | Qfile_attributes_lessp = intern ("file-attributes-lessp"); |
01bb4018 | 1083 | Qdefault_directory = intern ("default-directory"); |
32f4334d | 1084 | |
a2d3836c | 1085 | staticpro (&Qdirectory_files); |
4424b255 | 1086 | staticpro (&Qdirectory_files_and_attributes); |
a2d3836c EN |
1087 | staticpro (&Qfile_name_completion); |
1088 | staticpro (&Qfile_name_all_completions); | |
1089 | staticpro (&Qfile_attributes); | |
4424b255 | 1090 | staticpro (&Qfile_attributes_lessp); |
01bb4018 | 1091 | staticpro (&Qdefault_directory); |
a2d3836c | 1092 | |
14d55bce | 1093 | defsubr (&Sdirectory_files); |
4424b255 | 1094 | defsubr (&Sdirectory_files_and_attributes); |
14d55bce | 1095 | defsubr (&Sfile_name_completion); |
14d55bce RS |
1096 | defsubr (&Sfile_name_all_completions); |
1097 | defsubr (&Sfile_attributes); | |
4424b255 | 1098 | defsubr (&Sfile_attributes_lessp); |
14d55bce | 1099 | |
14d55bce | 1100 | DEFVAR_LISP ("completion-ignored-extensions", &Vcompletion_ignored_extensions, |
407a52c4 LT |
1101 | doc: /* Completion ignores file names ending in any string in this list. |
1102 | It does not ignore them if all possible completions end in one of | |
1103 | these strings or when displaying a list of completions. | |
1104 | It ignores directory names if they match any string in this list which | |
1105 | ends in a slash. */); | |
14d55bce RS |
1106 | Vcompletion_ignored_extensions = Qnil; |
1107 | } | |
6b61353c KH |
1108 | |
1109 | /* arch-tag: 1ac8deca-4d8f-4d41-ade9-089154d98c03 | |
1110 | (do not change this comment) */ |