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14d55bce | 1 | /* Lisp functions for making directory listings. |
73b0cd50 | 2 | Copyright (C) 1985-1986, 1993-1994, 1999-2011 Free Software Foundation, Inc. |
14d55bce RS |
3 | |
4 | This file is part of GNU Emacs. | |
5 | ||
9ec0b715 | 6 | GNU Emacs is free software: you can redistribute it and/or modify |
14d55bce | 7 | it under the terms of the GNU General Public License as published by |
9ec0b715 GM |
8 | the Free Software Foundation, either version 3 of the License, or |
9 | (at your option) any later version. | |
14d55bce RS |
10 | |
11 | GNU Emacs is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
9ec0b715 | 17 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
14d55bce RS |
18 | |
19 | ||
3964b9a7 RS |
20 | #include <config.h> |
21 | ||
14d55bce RS |
22 | #include <stdio.h> |
23 | #include <sys/types.h> | |
24 | #include <sys/stat.h> | |
d7306fe6 | 25 | #include <setjmp.h> |
14d55bce | 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> |
dfcf069d | 33 | #include <unistd.h> |
dfcf069d | 34 | |
d6717cdb JB |
35 | /* The d_nameln member of a struct dirent includes the '\0' character |
36 | on some systems, but not on others. What's worse, you can't tell | |
37 | at compile-time which one it will be, since it really depends on | |
38 | the sort of system providing the filesystem you're reading from, | |
39 | not the system you are running on. Paul Eggert | |
40 | <eggert@bi.twinsun.com> says this occurs when Emacs is running on a | |
41 | SunOS 4.1.2 host, reading a directory that is remote-mounted from a | |
42 | Solaris 2.1 host and is in a native Solaris 2.1 filesystem. | |
43 | ||
44 | Since applying strlen to the name always works, we'll just do that. */ | |
45 | #define NAMLEN(p) strlen (p->d_name) | |
46 | ||
1c97e857 | 47 | #ifdef HAVE_DIRENT_H |
14d55bce RS |
48 | |
49 | #include <dirent.h> | |
50 | #define DIRENTRY struct dirent | |
14d55bce | 51 | |
1c97e857 | 52 | #else /* not HAVE_DIRENT_H */ |
14d55bce | 53 | |
14d55bce | 54 | #include <sys/dir.h> |
851cab13 DL |
55 | #include <sys/stat.h> |
56 | ||
14d55bce | 57 | #define DIRENTRY struct direct |
14d55bce | 58 | |
361358ea JB |
59 | extern DIR *opendir (char *); |
60 | extern struct direct *readdir (DIR *); | |
14d55bce | 61 | |
1c97e857 | 62 | #endif /* HAVE_DIRENT_H */ |
128ecc89 | 63 | |
d209feed PE |
64 | #include <filemode.h> |
65 | ||
9f8c08a7 | 66 | #ifdef MSDOS |
128ecc89 RS |
67 | #define DIRENTRY_NONEMPTY(p) ((p)->d_name[0] != 0) |
68 | #else | |
69 | #define DIRENTRY_NONEMPTY(p) ((p)->d_ino) | |
14d55bce RS |
70 | #endif |
71 | ||
14d55bce | 72 | #include "lisp.h" |
fa8459a3 | 73 | #include "systime.h" |
14d55bce RS |
74 | #include "buffer.h" |
75 | #include "commands.h" | |
d2f6dae8 | 76 | #include "character.h" |
bd33479f KH |
77 | #include "charset.h" |
78 | #include "coding.h" | |
14d55bce | 79 | #include "regex.h" |
8c8a7c58 | 80 | #include "blockinput.h" |
14d55bce | 81 | |
a11889ab JB |
82 | /* Returns a search buffer, with a fastmap allocated and ready to go. */ |
83 | extern struct re_pattern_buffer *compile_pattern (Lisp_Object, | |
84 | struct re_registers *, | |
85 | Lisp_Object, int, int); | |
86 | ||
32f4334d | 87 | Lisp_Object Qdirectory_files; |
4424b255 | 88 | Lisp_Object Qdirectory_files_and_attributes; |
32f4334d RS |
89 | Lisp_Object Qfile_name_completion; |
90 | Lisp_Object Qfile_name_all_completions; | |
434e6714 | 91 | Lisp_Object Qfile_attributes; |
4424b255 | 92 | Lisp_Object Qfile_attributes_lessp; |
b3f04ced | 93 | |
4f043d0f | 94 | static int scmp (const char *, const char *, int); |
14d55bce | 95 | \f |
65156807 EZ |
96 | #ifdef WINDOWSNT |
97 | Lisp_Object | |
98 | directory_files_internal_w32_unwind (Lisp_Object arg) | |
99 | { | |
100 | Vw32_get_true_file_attributes = arg; | |
101 | return Qnil; | |
102 | } | |
103 | #endif | |
2488aba5 AI |
104 | |
105 | Lisp_Object | |
971de7fb | 106 | directory_files_internal_unwind (Lisp_Object dh) |
2488aba5 | 107 | { |
9d291bdf | 108 | DIR *d = (DIR *) XSAVE_VALUE (dh)->pointer; |
d15b573e | 109 | BLOCK_INPUT; |
2488aba5 | 110 | closedir (d); |
d15b573e | 111 | UNBLOCK_INPUT; |
2488aba5 AI |
112 | return Qnil; |
113 | } | |
114 | ||
177c0ea7 | 115 | /* Function shared by Fdirectory_files and Fdirectory_files_and_attributes. |
4424b255 | 116 | When ATTRS is zero, return a list of directory filenames; when |
6b61353c KH |
117 | non-zero, return a list of directory filenames and their attributes. |
118 | In the latter case, ID_FORMAT is passed to Ffile_attributes. */ | |
f69f9da1 | 119 | |
4424b255 | 120 | Lisp_Object |
971de7fb | 121 | directory_files_internal (Lisp_Object directory, Lisp_Object full, Lisp_Object match, Lisp_Object nosort, int attrs, Lisp_Object id_format) |
14d55bce RS |
122 | { |
123 | DIR *d; | |
388ac098 GM |
124 | int directory_nbytes; |
125 | Lisp_Object list, dirfilename, encoded_directory; | |
6bbd7a29 | 126 | struct re_pattern_buffer *bufp = NULL; |
96d64004 | 127 | int needsep = 0; |
aed13378 | 128 | int count = SPECPDL_INDEX (); |
388ac098 | 129 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5; |
8e42f043 | 130 | DIRENTRY *dp; |
65156807 EZ |
131 | #ifdef WINDOWSNT |
132 | Lisp_Object w32_save = Qnil; | |
133 | #endif | |
32f4334d | 134 | |
96d64004 | 135 | /* Because of file name handlers, these functions might call |
6155fae1 | 136 | Ffuncall, and cause a GC. */ |
388ac098 GM |
137 | list = encoded_directory = dirfilename = Qnil; |
138 | GCPRO5 (match, directory, list, dirfilename, encoded_directory); | |
96d64004 | 139 | dirfilename = Fdirectory_file_name (directory); |
6155fae1 | 140 | |
265a9e55 | 141 | if (!NILP (match)) |
14d55bce | 142 | { |
b7826503 | 143 | CHECK_STRING (match); |
ebb9e16f JB |
144 | |
145 | /* MATCH might be a flawed regular expression. Rather than | |
8e6208c5 | 146 | catching and signaling our own errors, we just call |
ebb9e16f | 147 | compile_pattern to do the work for us. */ |
c872c6b2 RS |
148 | /* Pass 1 for the MULTIBYTE arg |
149 | because we do make multibyte strings if the contents warrant. */ | |
1a9fbabe EZ |
150 | # ifdef WINDOWSNT |
151 | /* Windows users want case-insensitive wildcards. */ | |
152 | bufp = compile_pattern (match, 0, | |
4b4deea2 | 153 | BVAR (&buffer_defaults, case_canon_table), 0, 1); |
1a9fbabe | 154 | # else /* !WINDOWSNT */ |
3e937712 | 155 | bufp = compile_pattern (match, 0, Qnil, 0, 1); |
1a9fbabe | 156 | # endif /* !WINDOWSNT */ |
14d55bce RS |
157 | } |
158 | ||
b3edfc9b | 159 | /* Note: ENCODE_FILE and DECODE_FILE can GC because they can run |
388ac098 GM |
160 | run_pre_post_conversion_on_str which calls Lisp directly and |
161 | indirectly. */ | |
6c8b4f07 SM |
162 | if (STRING_MULTIBYTE (dirfilename)) |
163 | dirfilename = ENCODE_FILE (dirfilename); | |
164 | encoded_directory = (STRING_MULTIBYTE (directory) | |
165 | ? ENCODE_FILE (directory) : directory); | |
24c2a54f | 166 | |
e50c66d3 | 167 | /* Now *bufp is the compiled form of MATCH; don't call anything |
6155fae1 JB |
168 | which might compile a new regexp until we're done with the loop! */ |
169 | ||
d15b573e | 170 | BLOCK_INPUT; |
42a5b22f | 171 | d = opendir (SSDATA (dirfilename)); |
d15b573e | 172 | UNBLOCK_INPUT; |
388ac098 | 173 | if (d == NULL) |
23bd240f | 174 | report_file_error ("Opening directory", Fcons (directory, Qnil)); |
14d55bce | 175 | |
2488aba5 AI |
176 | /* Unfortunately, we can now invoke expand-file-name and |
177 | file-attributes on filenames, both of which can throw, so we must | |
178 | do a proper unwind-protect. */ | |
179 | record_unwind_protect (directory_files_internal_unwind, | |
9d291bdf | 180 | make_save_value (d, 0)); |
2488aba5 | 181 | |
65156807 EZ |
182 | #ifdef WINDOWSNT |
183 | if (attrs) | |
184 | { | |
65156807 EZ |
185 | extern int is_slow_fs (const char *); |
186 | ||
187 | /* Do this only once to avoid doing it (in w32.c:stat) for each | |
188 | file in the directory, when we call Ffile_attributes below. */ | |
189 | record_unwind_protect (directory_files_internal_w32_unwind, | |
190 | Vw32_get_true_file_attributes); | |
191 | w32_save = Vw32_get_true_file_attributes; | |
192 | if (EQ (Vw32_get_true_file_attributes, Qlocal)) | |
193 | { | |
65156807 EZ |
194 | /* w32.c:stat will notice these bindings and avoid calling |
195 | GetDriveType for each file. */ | |
b6046155 | 196 | if (is_slow_fs (SDATA (dirfilename))) |
65156807 EZ |
197 | Vw32_get_true_file_attributes = Qnil; |
198 | else | |
199 | Vw32_get_true_file_attributes = Qt; | |
200 | } | |
201 | } | |
202 | #endif | |
203 | ||
d5db4077 | 204 | directory_nbytes = SBYTES (directory); |
c81a9bdc | 205 | re_match_object = Qt; |
14d55bce | 206 | |
96d64004 | 207 | /* Decide whether we need to add a directory separator. */ |
388ac098 | 208 | if (directory_nbytes == 0 |
d5db4077 | 209 | || !IS_ANY_SEP (SREF (directory, directory_nbytes - 1))) |
96d64004 | 210 | needsep = 1; |
96d64004 | 211 | |
8e42f043 | 212 | /* Loop reading blocks until EOF or error. */ |
f69f9da1 | 213 | for (;;) |
14d55bce | 214 | { |
f69f9da1 GM |
215 | errno = 0; |
216 | dp = readdir (d); | |
217 | ||
9d291bdf | 218 | if (dp == NULL && (0 |
f69f9da1 | 219 | #ifdef EAGAIN |
9d291bdf SM |
220 | || errno == EAGAIN |
221 | #endif | |
222 | #ifdef EINTR | |
223 | || errno == EINTR | |
f69f9da1 | 224 | #endif |
9d291bdf SM |
225 | )) |
226 | { QUIT; continue; } | |
177c0ea7 | 227 | |
f69f9da1 GM |
228 | if (dp == NULL) |
229 | break; | |
230 | ||
128ecc89 | 231 | if (DIRENTRY_NONEMPTY (dp)) |
14d55bce | 232 | { |
e23f810c | 233 | int len; |
2488aba5 | 234 | int wanted = 0; |
388ac098 GM |
235 | Lisp_Object name, finalname; |
236 | struct gcpro gcpro1, gcpro2; | |
e23f810c KH |
237 | |
238 | len = NAMLEN (dp); | |
9ad4f3e5 | 239 | name = finalname = make_unibyte_string (dp->d_name, len); |
388ac098 | 240 | GCPRO2 (finalname, name); |
177c0ea7 | 241 | |
6c8b4f07 | 242 | /* Note: DECODE_FILE can GC; it should protect its argument, |
388ac098 GM |
243 | though. */ |
244 | name = DECODE_FILE (name); | |
d5db4077 | 245 | len = SBYTES (name); |
e23f810c | 246 | |
2488aba5 AI |
247 | /* Now that we have unwind_protect in place, we might as well |
248 | allow matching to be interrupted. */ | |
249 | immediate_quit = 1; | |
250 | QUIT; | |
251 | ||
265a9e55 | 252 | if (NILP (match) |
42a5b22f | 253 | || (0 <= re_search (bufp, SSDATA (name), len, 0, len, 0))) |
388ac098 | 254 | wanted = 1; |
2488aba5 AI |
255 | |
256 | immediate_quit = 0; | |
257 | ||
258 | if (wanted) | |
14d55bce | 259 | { |
265a9e55 | 260 | if (!NILP (full)) |
14d55bce | 261 | { |
e23f810c | 262 | Lisp_Object fullname; |
388ac098 GM |
263 | int nbytes = len + directory_nbytes + needsep; |
264 | int nchars; | |
5617588f | 265 | |
388ac098 | 266 | fullname = make_uninit_multibyte_string (nbytes, nbytes); |
72af86bd AS |
267 | memcpy (SDATA (fullname), SDATA (directory), |
268 | directory_nbytes); | |
177c0ea7 | 269 | |
5617588f | 270 | if (needsep) |
d549c5db | 271 | SSET (fullname, directory_nbytes, DIRECTORY_SEP); |
177c0ea7 | 272 | |
72af86bd AS |
273 | memcpy (SDATA (fullname) + directory_nbytes + needsep, |
274 | SDATA (name), len); | |
177c0ea7 | 275 | |
d5db4077 | 276 | nchars = chars_in_text (SDATA (fullname), nbytes); |
388ac098 GM |
277 | |
278 | /* Some bug somewhere. */ | |
279 | if (nchars > nbytes) | |
280 | abort (); | |
177c0ea7 | 281 | |
437fcd47 | 282 | STRING_SET_CHARS (fullname, nchars); |
388ac098 | 283 | if (nchars == nbytes) |
d5db4077 | 284 | STRING_SET_UNIBYTE (fullname); |
177c0ea7 | 285 | |
4424b255 GV |
286 | finalname = fullname; |
287 | } | |
aab9c564 KH |
288 | else |
289 | finalname = name; | |
4424b255 GV |
290 | |
291 | if (attrs) | |
292 | { | |
293 | /* Construct an expanded filename for the directory entry. | |
294 | Use the decoded names for input to Ffile_attributes. */ | |
388ac098 GM |
295 | Lisp_Object decoded_fullname, fileattrs; |
296 | struct gcpro gcpro1, gcpro2; | |
297 | ||
298 | decoded_fullname = fileattrs = Qnil; | |
299 | GCPRO2 (decoded_fullname, fileattrs); | |
4424b255 | 300 | |
388ac098 | 301 | /* Both Fexpand_file_name and Ffile_attributes can GC. */ |
4424b255 | 302 | decoded_fullname = Fexpand_file_name (name, directory); |
6b61353c | 303 | fileattrs = Ffile_attributes (decoded_fullname, id_format); |
4424b255 GV |
304 | |
305 | list = Fcons (Fcons (finalname, fileattrs), list); | |
388ac098 | 306 | UNGCPRO; |
4424b255 GV |
307 | } |
308 | else | |
388ac098 | 309 | list = Fcons (finalname, list); |
14d55bce | 310 | } |
388ac098 GM |
311 | |
312 | UNGCPRO; | |
14d55bce RS |
313 | } |
314 | } | |
2488aba5 | 315 | |
d15b573e | 316 | BLOCK_INPUT; |
14d55bce | 317 | closedir (d); |
d15b573e | 318 | UNBLOCK_INPUT; |
65156807 EZ |
319 | #ifdef WINDOWSNT |
320 | if (attrs) | |
321 | Vw32_get_true_file_attributes = w32_save; | |
322 | #endif | |
2488aba5 AI |
323 | |
324 | /* Discard the unwind protect. */ | |
325 | specpdl_ptr = specpdl + count; | |
326 | ||
388ac098 GM |
327 | if (NILP (nosort)) |
328 | list = Fsort (Fnreverse (list), | |
329 | attrs ? Qfile_attributes_lessp : Qstring_lessp); | |
177c0ea7 | 330 | |
388ac098 | 331 | RETURN_UNGCPRO (list); |
14d55bce | 332 | } |
4424b255 GV |
333 | |
334 | ||
335 | DEFUN ("directory-files", Fdirectory_files, Sdirectory_files, 1, 4, 0, | |
335c5470 PJ |
336 | doc: /* Return a list of names of files in DIRECTORY. |
337 | There are three optional arguments: | |
338 | If FULL is non-nil, return absolute file names. Otherwise return names | |
339 | that are relative to the specified directory. | |
340 | If MATCH is non-nil, mention only file names that match the regexp MATCH. | |
341 | If NOSORT is non-nil, the list is not sorted--its order is unpredictable. | |
a489517b JB |
342 | Otherwise, the list returned is sorted with `string-lessp'. |
343 | NOSORT is useful if you plan to sort the result yourself. */) | |
5842a27b | 344 | (Lisp_Object directory, Lisp_Object full, Lisp_Object match, Lisp_Object nosort) |
4424b255 GV |
345 | { |
346 | Lisp_Object handler; | |
4ece81a6 | 347 | directory = Fexpand_file_name (directory, Qnil); |
4424b255 GV |
348 | |
349 | /* If the file name has special constructs in it, | |
350 | call the corresponding file handler. */ | |
351 | handler = Ffind_file_name_handler (directory, Qdirectory_files); | |
352 | if (!NILP (handler)) | |
6b61353c KH |
353 | return call5 (handler, Qdirectory_files, directory, |
354 | full, match, nosort); | |
4424b255 | 355 | |
6b61353c | 356 | return directory_files_internal (directory, full, match, nosort, 0, Qnil); |
4424b255 GV |
357 | } |
358 | ||
335c5470 | 359 | DEFUN ("directory-files-and-attributes", Fdirectory_files_and_attributes, |
6b61353c | 360 | Sdirectory_files_and_attributes, 1, 5, 0, |
335c5470 | 361 | doc: /* Return a list of names of files and their attributes in DIRECTORY. |
6b61353c | 362 | There are four optional arguments: |
335c5470 PJ |
363 | If FULL is non-nil, return absolute file names. Otherwise return names |
364 | that are relative to the specified directory. | |
365 | If MATCH is non-nil, mention only file names that match the regexp MATCH. | |
366 | If NOSORT is non-nil, the list is not sorted--its order is unpredictable. | |
6b61353c KH |
367 | NOSORT is useful if you plan to sort the result yourself. |
368 | ID-FORMAT specifies the preferred format of attributes uid and gid, see | |
6c5665e9 EZ |
369 | `file-attributes' for further documentation. |
370 | On MS-Windows, performance depends on `w32-get-true-file-attributes', | |
371 | which see. */) | |
5842a27b | 372 | (Lisp_Object directory, Lisp_Object full, Lisp_Object match, Lisp_Object nosort, Lisp_Object id_format) |
4424b255 GV |
373 | { |
374 | Lisp_Object handler; | |
4ece81a6 | 375 | directory = Fexpand_file_name (directory, Qnil); |
4424b255 GV |
376 | |
377 | /* If the file name has special constructs in it, | |
378 | call the corresponding file handler. */ | |
379 | handler = Ffind_file_name_handler (directory, Qdirectory_files_and_attributes); | |
380 | if (!NILP (handler)) | |
6b61353c KH |
381 | return call6 (handler, Qdirectory_files_and_attributes, |
382 | directory, full, match, nosort, id_format); | |
4424b255 | 383 | |
6b61353c | 384 | return directory_files_internal (directory, full, match, nosort, 1, id_format); |
4424b255 GV |
385 | } |
386 | ||
14d55bce | 387 | \f |
971de7fb | 388 | Lisp_Object file_name_completion (Lisp_Object file, Lisp_Object dirname, int all_flag, int ver_flag, Lisp_Object predicate); |
14d55bce RS |
389 | |
390 | DEFUN ("file-name-completion", Ffile_name_completion, Sfile_name_completion, | |
abfb1932 | 391 | 2, 3, 0, |
335c5470 PJ |
392 | doc: /* Complete file name FILE in directory DIRECTORY. |
393 | Returns the longest string | |
394 | common to all file names in DIRECTORY that start with FILE. | |
395 | If there is only one and FILE matches it exactly, returns t. | |
2f60660a | 396 | Returns nil if DIRECTORY contains no name starting with FILE. |
335c5470 | 397 | |
b6ce54d6 RS |
398 | If PREDICATE is non-nil, call PREDICATE with each possible |
399 | completion (in absolute form) and ignore it if PREDICATE returns nil. | |
400 | ||
335c5470 PJ |
401 | This function ignores some of the possible completions as |
402 | determined by the variable `completion-ignored-extensions', which see. */) | |
5842a27b | 403 | (Lisp_Object file, Lisp_Object directory, Lisp_Object predicate) |
14d55bce | 404 | { |
32f4334d | 405 | Lisp_Object handler; |
32f4334d | 406 | |
8436e231 | 407 | /* If the directory name has special constructs in it, |
32f4334d | 408 | call the corresponding file handler. */ |
23bd240f | 409 | handler = Ffind_file_name_handler (directory, Qfile_name_completion); |
32f4334d | 410 | if (!NILP (handler)) |
abfb1932 | 411 | return call4 (handler, Qfile_name_completion, file, directory, predicate); |
32f4334d | 412 | |
8436e231 RS |
413 | /* If the file name has special constructs in it, |
414 | call the corresponding file handler. */ | |
415 | handler = Ffind_file_name_handler (file, Qfile_name_completion); | |
416 | if (!NILP (handler)) | |
abfb1932 | 417 | return call4 (handler, Qfile_name_completion, file, directory, predicate); |
8436e231 | 418 | |
abfb1932 | 419 | return file_name_completion (file, directory, 0, 0, predicate); |
14d55bce RS |
420 | } |
421 | ||
422 | DEFUN ("file-name-all-completions", Ffile_name_all_completions, | |
335c5470 PJ |
423 | Sfile_name_all_completions, 2, 2, 0, |
424 | doc: /* Return a list of all completions of file name FILE in directory DIRECTORY. | |
425 | These are all file names in directory DIRECTORY which begin with FILE. */) | |
5842a27b | 426 | (Lisp_Object file, Lisp_Object directory) |
14d55bce | 427 | { |
32f4334d RS |
428 | Lisp_Object handler; |
429 | ||
8436e231 | 430 | /* If the directory name has special constructs in it, |
32f4334d | 431 | call the corresponding file handler. */ |
23bd240f | 432 | handler = Ffind_file_name_handler (directory, Qfile_name_all_completions); |
32f4334d | 433 | if (!NILP (handler)) |
23bd240f | 434 | return call3 (handler, Qfile_name_all_completions, file, directory); |
32f4334d | 435 | |
8436e231 RS |
436 | /* If the file name has special constructs in it, |
437 | call the corresponding file handler. */ | |
438 | handler = Ffind_file_name_handler (file, Qfile_name_all_completions); | |
439 | if (!NILP (handler)) | |
23bd240f | 440 | return call3 (handler, Qfile_name_all_completions, file, directory); |
8436e231 | 441 | |
abfb1932 | 442 | return file_name_completion (file, directory, 1, 0, Qnil); |
14d55bce RS |
443 | } |
444 | ||
438105ed | 445 | static int file_name_completion_stat (Lisp_Object dirname, DIRENTRY *dp, struct stat *st_addr); |
01bb4018 | 446 | Lisp_Object Qdefault_directory; |
dfcf069d | 447 | |
14d55bce | 448 | Lisp_Object |
971de7fb | 449 | file_name_completion (Lisp_Object file, Lisp_Object dirname, int all_flag, int ver_flag, Lisp_Object predicate) |
14d55bce RS |
450 | { |
451 | DIR *d; | |
3271a8f5 | 452 | int bestmatchsize = 0; |
14d55bce | 453 | int matchcount = 0; |
abfb1932 RS |
454 | /* If ALL_FLAG is 1, BESTMATCH is the list of all matches, decoded. |
455 | If ALL_FLAG is 0, BESTMATCH is either nil | |
456 | or the best match so far, not decoded. */ | |
14d55bce | 457 | Lisp_Object bestmatch, tem, elt, name; |
24c2a54f RS |
458 | Lisp_Object encoded_file; |
459 | Lisp_Object encoded_dir; | |
14d55bce RS |
460 | struct stat st; |
461 | int directoryp; | |
3271a8f5 SM |
462 | /* If includeall is zero, exclude files in completion-ignored-extensions as |
463 | well as "." and "..". Until shown otherwise, assume we can't exclude | |
464 | anything. */ | |
465 | int includeall = 1; | |
aed13378 | 466 | int count = SPECPDL_INDEX (); |
24c2a54f | 467 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5; |
3fcc88cc | 468 | |
6bbd7a29 GM |
469 | elt = Qnil; |
470 | ||
b7826503 | 471 | CHECK_STRING (file); |
14d55bce | 472 | |
128ecc89 RS |
473 | #ifdef FILE_SYSTEM_CASE |
474 | file = FILE_SYSTEM_CASE (file); | |
475 | #endif | |
14d55bce | 476 | bestmatch = Qnil; |
24c2a54f RS |
477 | encoded_file = encoded_dir = Qnil; |
478 | GCPRO5 (file, dirname, bestmatch, encoded_file, encoded_dir); | |
3fcc88cc | 479 | dirname = Fexpand_file_name (dirname, Qnil); |
01bb4018 | 480 | specbind (Qdefault_directory, dirname); |
14d55bce | 481 | |
24c2a54f RS |
482 | /* Do completion on the encoded file name |
483 | because the other names in the directory are (we presume) | |
484 | encoded likewise. We decode the completed string at the end. */ | |
2a54a229 SM |
485 | /* Actually, this is not quite true any more: we do most of the completion |
486 | work with decoded file names, but we still do some filtering based | |
487 | on the encoded file name. */ | |
6c8b4f07 | 488 | encoded_file = STRING_MULTIBYTE (file) ? ENCODE_FILE (file) : file; |
24c2a54f RS |
489 | |
490 | encoded_dir = ENCODE_FILE (dirname); | |
491 | ||
3271a8f5 | 492 | BLOCK_INPUT; |
42a5b22f | 493 | d = opendir (SSDATA (Fdirectory_file_name (encoded_dir))); |
3271a8f5 SM |
494 | UNBLOCK_INPUT; |
495 | if (!d) | |
496 | report_file_error ("Opening directory", Fcons (dirname, Qnil)); | |
14d55bce | 497 | |
3271a8f5 SM |
498 | record_unwind_protect (directory_files_internal_unwind, |
499 | make_save_value (d, 0)); | |
14d55bce | 500 | |
3271a8f5 SM |
501 | /* Loop reading blocks */ |
502 | /* (att3b compiler bug requires do a null comparison this way) */ | |
503 | while (1) | |
14d55bce | 504 | { |
3271a8f5 SM |
505 | DIRENTRY *dp; |
506 | int len; | |
507 | int canexclude = 0; | |
14d55bce | 508 | |
3271a8f5 SM |
509 | errno = 0; |
510 | dp = readdir (d); | |
511 | if (dp == NULL && (0 | |
9d291bdf | 512 | # ifdef EAGAIN |
3271a8f5 | 513 | || errno == EAGAIN |
9d291bdf SM |
514 | # endif |
515 | # ifdef EINTR | |
3271a8f5 | 516 | || errno == EINTR |
9d291bdf | 517 | # endif |
3271a8f5 SM |
518 | )) |
519 | { QUIT; continue; } | |
9d291bdf | 520 | |
3271a8f5 | 521 | if (!dp) break; |
14d55bce | 522 | |
3271a8f5 | 523 | len = NAMLEN (dp); |
14d55bce | 524 | |
3271a8f5 SM |
525 | QUIT; |
526 | if (! DIRENTRY_NONEMPTY (dp) | |
527 | || len < SCHARS (encoded_file) | |
4f043d0f | 528 | || 0 <= scmp (dp->d_name, SSDATA (encoded_file), |
3271a8f5 SM |
529 | SCHARS (encoded_file))) |
530 | continue; | |
14d55bce | 531 | |
3271a8f5 SM |
532 | if (file_name_completion_stat (encoded_dir, dp, &st) < 0) |
533 | continue; | |
14d55bce | 534 | |
f68c809d | 535 | directoryp = S_ISDIR (st.st_mode); |
3271a8f5 SM |
536 | tem = Qnil; |
537 | /* If all_flag is set, always include all. | |
538 | It would not actually be helpful to the user to ignore any possible | |
539 | completions when making a list of them. */ | |
540 | if (!all_flag) | |
541 | { | |
542 | int skip; | |
2cd298e2 | 543 | |
7519c40d | 544 | #if 0 /* FIXME: The `scmp' call compares an encoded and a decoded string. */ |
2cd298e2 SM |
545 | /* If this entry matches the current bestmatch, the only |
546 | thing it can do is increase matchcount, so don't bother | |
547 | investigating it any further. */ | |
548 | if (!completion_ignore_case | |
549 | /* The return result depends on whether it's the sole match. */ | |
550 | && matchcount > 1 | |
551 | && !includeall /* This match may allow includeall to 0. */ | |
552 | && len >= bestmatchsize | |
4f043d0f | 553 | && 0 > scmp (dp->d_name, SSDATA (bestmatch), bestmatchsize)) |
2cd298e2 | 554 | continue; |
7519c40d | 555 | #endif |
2cd298e2 | 556 | |
3271a8f5 | 557 | if (directoryp) |
ad456ad4 RS |
558 | { |
559 | #ifndef TRIVIAL_DIRECTORY_ENTRY | |
560 | #define TRIVIAL_DIRECTORY_ENTRY(n) (!strcmp (n, ".") || !strcmp (n, "..")) | |
561 | #endif | |
abfb1932 RS |
562 | /* "." and ".." are never interesting as completions, and are |
563 | actually in the way in a directory with only one file. */ | |
3271a8f5 SM |
564 | if (TRIVIAL_DIRECTORY_ENTRY (dp->d_name)) |
565 | canexclude = 1; | |
566 | else if (len > SCHARS (encoded_file)) | |
d013f29b EZ |
567 | /* Ignore directories if they match an element of |
568 | completion-ignored-extensions which ends in a slash. */ | |
569 | for (tem = Vcompletion_ignored_extensions; | |
570 | CONSP (tem); tem = XCDR (tem)) | |
571 | { | |
572 | int elt_len; | |
4f043d0f | 573 | char *p1; |
d013f29b EZ |
574 | |
575 | elt = XCAR (tem); | |
576 | if (!STRINGP (elt)) | |
577 | continue; | |
a74aaa9d EZ |
578 | /* Need to encode ELT, since scmp compares unibyte |
579 | strings only. */ | |
580 | elt = ENCODE_FILE (elt); | |
d5db4077 | 581 | elt_len = SCHARS (elt) - 1; /* -1 for trailing / */ |
7a8d465a | 582 | if (elt_len <= 0) |
d013f29b | 583 | continue; |
4f043d0f | 584 | p1 = SSDATA (elt); |
d013f29b EZ |
585 | if (p1[elt_len] != '/') |
586 | continue; | |
587 | skip = len - elt_len; | |
588 | if (skip < 0) | |
589 | continue; | |
590 | ||
591 | if (0 <= scmp (dp->d_name + skip, p1, elt_len)) | |
592 | continue; | |
593 | break; | |
594 | } | |
ad456ad4 RS |
595 | } |
596 | else | |
3271a8f5 | 597 | { |
14d55bce RS |
598 | /* Compare extensions-to-be-ignored against end of this file name */ |
599 | /* if name is not an exact match against specified string */ | |
3271a8f5 | 600 | if (len > SCHARS (encoded_file)) |
14d55bce RS |
601 | /* and exit this for loop if a match is found */ |
602 | for (tem = Vcompletion_ignored_extensions; | |
70949dac | 603 | CONSP (tem); tem = XCDR (tem)) |
14d55bce | 604 | { |
70949dac | 605 | elt = XCAR (tem); |
88cf1852 | 606 | if (!STRINGP (elt)) continue; |
a74aaa9d EZ |
607 | /* Need to encode ELT, since scmp compares unibyte |
608 | strings only. */ | |
609 | elt = ENCODE_FILE (elt); | |
d5db4077 | 610 | skip = len - SCHARS (elt); |
14d55bce RS |
611 | if (skip < 0) continue; |
612 | ||
613 | if (0 <= scmp (dp->d_name + skip, | |
4f043d0f | 614 | SSDATA (elt), |
d5db4077 | 615 | SCHARS (elt))) |
14d55bce RS |
616 | continue; |
617 | break; | |
618 | } | |
619 | } | |
620 | ||
f676868d KH |
621 | /* If an ignored-extensions match was found, |
622 | don't process this name as a completion. */ | |
3271a8f5 SM |
623 | if (CONSP (tem)) |
624 | canexclude = 1; | |
f676868d | 625 | |
3271a8f5 SM |
626 | if (!includeall && canexclude) |
627 | /* We're not including all files and this file can be excluded. */ | |
628 | continue; | |
9c691c00 | 629 | |
3271a8f5 SM |
630 | if (includeall && !canexclude) |
631 | { /* If we have one non-excludable file, we want to exclude the | |
632 | excudable files. */ | |
633 | includeall = 0; | |
634 | /* Throw away any previous excludable match found. */ | |
635 | bestmatch = Qnil; | |
636 | bestmatchsize = 0; | |
637 | matchcount = 0; | |
f676868d | 638 | } |
3271a8f5 SM |
639 | } |
640 | /* FIXME: If we move this `decode' earlier we can eliminate | |
641 | the repeated ENCODE_FILE on Vcompletion_ignored_extensions. */ | |
642 | name = make_unibyte_string (dp->d_name, len); | |
643 | name = DECODE_FILE (name); | |
644 | ||
645 | { | |
646 | Lisp_Object regexps; | |
647 | Lisp_Object zero; | |
648 | XSETFASTINT (zero, 0); | |
649 | ||
650 | /* Ignore this element if it fails to match all the regexps. */ | |
cc524e3b CY |
651 | if (completion_ignore_case) |
652 | { | |
653 | for (regexps = Vcompletion_regexp_list; CONSP (regexps); | |
654 | regexps = XCDR (regexps)) | |
655 | if (fast_string_match_ignore_case (XCAR (regexps), name) < 0) | |
656 | break; | |
657 | } | |
658 | else | |
659 | { | |
660 | for (regexps = Vcompletion_regexp_list; CONSP (regexps); | |
661 | regexps = XCDR (regexps)) | |
662 | if (fast_string_match (XCAR (regexps), name) < 0) | |
663 | break; | |
664 | } | |
665 | ||
3271a8f5 SM |
666 | if (CONSP (regexps)) |
667 | continue; | |
668 | } | |
669 | ||
670 | /* This is a possible completion */ | |
671 | if (directoryp) | |
672 | /* This completion is a directory; make it end with '/'. */ | |
673 | name = Ffile_name_as_directory (name); | |
674 | ||
675 | /* Test the predicate, if any. */ | |
676 | if (!NILP (predicate)) | |
677 | { | |
678 | Lisp_Object val; | |
679 | struct gcpro gcpro1; | |
14d55bce | 680 | |
3271a8f5 SM |
681 | GCPRO1 (name); |
682 | val = call1 (predicate, name); | |
683 | UNGCPRO; | |
c4c52bb7 | 684 | |
3271a8f5 SM |
685 | if (NILP (val)) |
686 | continue; | |
687 | } | |
abfb1932 | 688 | |
3271a8f5 | 689 | /* Suitably record this match. */ |
14d55bce | 690 | |
3271a8f5 | 691 | matchcount++; |
f676868d | 692 | |
3271a8f5 SM |
693 | if (all_flag) |
694 | bestmatch = Fcons (name, bestmatch); | |
695 | else if (NILP (bestmatch)) | |
696 | { | |
697 | bestmatch = name; | |
698 | bestmatchsize = SCHARS (name); | |
699 | } | |
700 | else | |
701 | { | |
702 | Lisp_Object zero = make_number (0); | |
703 | /* FIXME: This is a copy of the code in Ftry_completion. */ | |
704 | int compare = min (bestmatchsize, SCHARS (name)); | |
705 | Lisp_Object tem | |
706 | = Fcompare_strings (bestmatch, zero, | |
707 | make_number (compare), | |
708 | name, zero, | |
709 | make_number (compare), | |
710 | completion_ignore_case ? Qt : Qnil); | |
711 | int matchsize | |
712 | = (EQ (tem, Qt) ? compare | |
713 | : XINT (tem) < 0 ? - XINT (tem) - 1 | |
714 | : XINT (tem) - 1); | |
715 | ||
716 | if (completion_ignore_case) | |
f676868d | 717 | { |
3271a8f5 SM |
718 | /* If this is an exact match except for case, |
719 | use it as the best match rather than one that is not | |
720 | an exact match. This way, we get the case pattern | |
721 | of the actual match. */ | |
722 | /* This tests that the current file is an exact match | |
723 | but BESTMATCH is not (it is too long). */ | |
724 | if ((matchsize == SCHARS (name) | |
2cd298e2 | 725 | && matchsize + !!directoryp < SCHARS (bestmatch)) |
3271a8f5 SM |
726 | || |
727 | /* If there is no exact match ignoring case, | |
728 | prefer a match that does not change the case | |
729 | of the input. */ | |
730 | /* If there is more than one exact match aside from | |
731 | case, and one of them is exact including case, | |
732 | prefer that one. */ | |
733 | /* This == checks that, of current file and BESTMATCH, | |
734 | either both or neither are exact. */ | |
735 | (((matchsize == SCHARS (name)) | |
736 | == | |
737 | (matchsize + !!directoryp == SCHARS (bestmatch))) | |
738 | && (tem = Fcompare_strings (name, zero, | |
739 | make_number (SCHARS (file)), | |
740 | file, zero, | |
741 | Qnil, | |
742 | Qnil), | |
743 | EQ (Qt, tem)) | |
744 | && (tem = Fcompare_strings (bestmatch, zero, | |
745 | make_number (SCHARS (file)), | |
746 | file, zero, | |
747 | Qnil, | |
748 | Qnil), | |
749 | ! EQ (Qt, tem)))) | |
750 | bestmatch = name; | |
14d55bce | 751 | } |
3271a8f5 | 752 | bestmatchsize = matchsize; |
2cd298e2 SM |
753 | |
754 | /* If the best completion so far is reduced to the string | |
755 | we're trying to complete, then we already know there's no | |
756 | other completion, so there's no point looking any further. */ | |
757 | if (matchsize <= SCHARS (file) | |
758 | && !includeall /* A future match may allow includeall to 0. */ | |
759 | /* If completion-ignore-case is non-nil, don't | |
760 | short-circuit because we want to find the best | |
761 | possible match *including* case differences. */ | |
762 | && (!completion_ignore_case || matchsize == 0) | |
763 | /* The return value depends on whether it's the sole match. */ | |
764 | && matchcount > 1) | |
765 | break; | |
766 | ||
14d55bce | 767 | } |
14d55bce RS |
768 | } |
769 | ||
3fcc88cc | 770 | UNGCPRO; |
3271a8f5 | 771 | /* This closes the directory. */ |
c3a3229c | 772 | bestmatch = unbind_to (count, bestmatch); |
14d55bce | 773 | |
265a9e55 | 774 | if (all_flag || NILP (bestmatch)) |
2a54a229 | 775 | return bestmatch; |
928b5acc SM |
776 | /* Return t if the supplied string is an exact match (counting case); |
777 | it does not require any change to be made. */ | |
778 | if (matchcount == 1 && !NILP (Fequal (bestmatch, file))) | |
14d55bce | 779 | return Qt; |
24c2a54f RS |
780 | bestmatch = Fsubstring (bestmatch, make_number (0), |
781 | make_number (bestmatchsize)); | |
24c2a54f | 782 | return bestmatch; |
14d55bce RS |
783 | } |
784 | ||
b3f04ced RS |
785 | /* Compare exactly LEN chars of strings at S1 and S2, |
786 | ignoring case if appropriate. | |
787 | Return -1 if strings match, | |
788 | else number of chars that match at the beginning. */ | |
789 | ||
790 | static int | |
4f043d0f | 791 | scmp (const char *s1, const char *s2, int len) |
b3f04ced RS |
792 | { |
793 | register int l = len; | |
794 | ||
795 | if (completion_ignore_case) | |
796 | { | |
4f043d0f PE |
797 | while (l |
798 | && (DOWNCASE ((unsigned char) *s1++) | |
799 | == DOWNCASE ((unsigned char) *s2++))) | |
b3f04ced RS |
800 | l--; |
801 | } | |
802 | else | |
803 | { | |
804 | while (l && *s1++ == *s2++) | |
805 | l--; | |
806 | } | |
807 | if (l == 0) | |
808 | return -1; | |
809 | else | |
810 | return len - l; | |
811 | } | |
812 | ||
dfcf069d | 813 | static int |
438105ed | 814 | file_name_completion_stat (Lisp_Object dirname, DIRENTRY *dp, struct stat *st_addr) |
14d55bce RS |
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 | 821 | #ifdef MSDOS |
04924ee3 RS |
822 | /* Some fields of struct stat are *very* expensive to compute on MS-DOS, |
823 | but aren't required here. Avoid computing the following fields: | |
824 | st_inode, st_size and st_nlink for directories, and the execute bits | |
825 | in st_mode for non-directory files with non-standard extensions. */ | |
826 | ||
827 | unsigned short save_djstat_flags = _djstat_flags; | |
828 | ||
829 | _djstat_flags = _STAT_INODE | _STAT_EXEC_MAGIC | _STAT_DIRSIZE; | |
04924ee3 RS |
830 | #endif /* MSDOS */ |
831 | ||
72af86bd | 832 | memcpy (fullname, SDATA (dirname), pos); |
0b39d75d RS |
833 | if (!IS_DIRECTORY_SEP (fullname[pos - 1])) |
834 | fullname[pos++] = DIRECTORY_SEP; | |
14d55bce | 835 | |
72af86bd | 836 | memcpy (fullname + pos, dp->d_name, len); |
14d55bce RS |
837 | fullname[pos + len] = 0; |
838 | ||
7e3cf34f RS |
839 | /* We want to return success if a link points to a nonexistent file, |
840 | but we want to return the status for what the link points to, | |
841 | in case it is a directory. */ | |
842 | value = lstat (fullname, st_addr); | |
f68c809d PE |
843 | if (value == 0 && S_ISLNK (st_addr->st_mode)) |
844 | stat (fullname, st_addr); | |
04924ee3 | 845 | #ifdef MSDOS |
04924ee3 | 846 | _djstat_flags = save_djstat_flags; |
04924ee3 RS |
847 | #endif /* MSDOS */ |
848 | return value; | |
14d55bce RS |
849 | } |
850 | \f | |
851 | Lisp_Object | |
971de7fb | 852 | make_time (time_t time) |
14d55bce RS |
853 | { |
854 | return Fcons (make_number (time >> 16), | |
855 | Fcons (make_number (time & 0177777), Qnil)); | |
856 | } | |
857 | ||
8aaaec6b EZ |
858 | static char * |
859 | stat_uname (struct stat *st) | |
860 | { | |
861 | #ifdef WINDOWSNT | |
862 | return st->st_uname; | |
863 | #else | |
864 | struct passwd *pw = (struct passwd *) getpwuid (st->st_uid); | |
865 | ||
866 | if (pw) | |
867 | return pw->pw_name; | |
868 | else | |
869 | return NULL; | |
870 | #endif | |
871 | } | |
872 | ||
873 | static char * | |
874 | stat_gname (struct stat *st) | |
875 | { | |
876 | #ifdef WINDOWSNT | |
877 | return st->st_gname; | |
878 | #else | |
879 | struct group *gr = (struct group *) getgrgid (st->st_gid); | |
880 | ||
881 | if (gr) | |
882 | return gr->gr_name; | |
883 | else | |
884 | return NULL; | |
885 | #endif | |
886 | } | |
887 | ||
6b61353c | 888 | DEFUN ("file-attributes", Ffile_attributes, Sfile_attributes, 1, 2, 0, |
335c5470 PJ |
889 | doc: /* Return a list of attributes of file FILENAME. |
890 | Value is nil if specified file cannot be opened. | |
6b61353c KH |
891 | |
892 | ID-FORMAT specifies the preferred format of attributes uid and gid (see | |
e42cd1a7 JB |
893 | below) - valid values are 'string and 'integer. The latter is the |
894 | default, but we plan to change that, so you should specify a non-nil value | |
895 | for ID-FORMAT if you use the returned uid or gid. | |
6b61353c KH |
896 | |
897 | Elements of the attribute list are: | |
335c5470 PJ |
898 | 0. t for directory, string (name linked to) for symbolic link, or nil. |
899 | 1. Number of links to file. | |
78e7d1fe EZ |
900 | 2. File uid as a string or a number. If a string value cannot be |
901 | looked up, a numeric value, either an integer or a float, is returned. | |
6b61353c | 902 | 3. File gid, likewise. |
335c5470 PJ |
903 | 4. Last access time, as a list of two integers. |
904 | First integer has high-order 16 bits of time, second has low 16 bits. | |
e02131a2 EZ |
905 | (See a note below about access time on FAT-based filesystems.) |
906 | 5. Last modification time, likewise. This is the time of the last | |
907 | change to the file's contents. | |
908 | 6. Last status change time, likewise. This is the time of last change | |
909 | to the file's attributes: owner and group, access mode bits, etc. | |
335c5470 PJ |
910 | 7. Size in bytes. |
911 | This is a floating point number if the size is too large for an integer. | |
912 | 8. File modes, as a string of ten letters or dashes as in ls -l. | |
e0f24100 | 913 | 9. t if file's gid would change if file were deleted and recreated. |
e02131a2 EZ |
914 | 10. inode number. If inode number is larger than what Emacs integer |
915 | can hold, but still fits into a 32-bit number, this is a cons cell | |
916 | containing two integers: first the high part, then the low 16 bits. | |
917 | If the inode number is wider than 32 bits, this is of the form | |
918 | (HIGH MIDDLE . LOW): first the high 24 bits, then middle 24 bits, | |
919 | and finally the low 16 bits. | |
920 | 11. Filesystem device number. If it is larger than what the Emacs | |
921 | integer can hold, this is a cons cell, similar to the inode number. | |
922 | ||
923 | On most filesystems, the combination of the inode and the device | |
924 | number uniquely identifies the file. | |
6c5665e9 EZ |
925 | |
926 | On MS-Windows, performance depends on `w32-get-true-file-attributes', | |
21f73755 EZ |
927 | which see. |
928 | ||
929 | On some FAT-based filesystems, only the date of last access is recorded, | |
930 | so last access time will always be midnight of that day. */) | |
5842a27b | 931 | (Lisp_Object filename, Lisp_Object id_format) |
14d55bce RS |
932 | { |
933 | Lisp_Object values[12]; | |
24c2a54f | 934 | Lisp_Object encoded; |
14d55bce | 935 | struct stat s; |
98601119 | 936 | #ifdef BSD4_2 |
b3edfc9b | 937 | Lisp_Object dirname; |
14d55bce | 938 | struct stat sdir; |
98601119 | 939 | #endif /* BSD4_2 */ |
14d55bce | 940 | char modes[10]; |
32f4334d | 941 | Lisp_Object handler; |
7435aef8 | 942 | struct gcpro gcpro1; |
51105b13 | 943 | char *uname = NULL, *gname = NULL; |
14d55bce RS |
944 | |
945 | filename = Fexpand_file_name (filename, Qnil); | |
32f4334d RS |
946 | |
947 | /* If the file name has special constructs in it, | |
948 | call the corresponding file handler. */ | |
a617e913 | 949 | handler = Ffind_file_name_handler (filename, Qfile_attributes); |
32f4334d | 950 | if (!NILP (handler)) |
6b61353c KH |
951 | { /* Only pass the extra arg if it is used to help backward compatibility |
952 | with old file handlers which do not implement the new arg. --Stef */ | |
953 | if (NILP (id_format)) | |
954 | return call2 (handler, Qfile_attributes, filename); | |
955 | else | |
956 | return call3 (handler, Qfile_attributes, filename, id_format); | |
957 | } | |
32f4334d | 958 | |
7435aef8 | 959 | GCPRO1 (filename); |
24c2a54f | 960 | encoded = ENCODE_FILE (filename); |
7435aef8 | 961 | UNGCPRO; |
24c2a54f | 962 | |
42a5b22f | 963 | if (lstat (SSDATA (encoded), &s) < 0) |
14d55bce RS |
964 | return Qnil; |
965 | ||
966 | switch (s.st_mode & S_IFMT) | |
967 | { | |
968 | default: | |
969 | values[0] = Qnil; break; | |
970 | case S_IFDIR: | |
971 | values[0] = Qt; break; | |
972 | #ifdef S_IFLNK | |
973 | case S_IFLNK: | |
974 | values[0] = Ffile_symlink_p (filename); break; | |
975 | #endif | |
976 | } | |
977 | values[1] = make_number (s.st_nlink); | |
51105b13 EZ |
978 | |
979 | if (!(NILP (id_format) || EQ (id_format, Qinteger))) | |
6b61353c | 980 | { |
8c8a7c58 | 981 | BLOCK_INPUT; |
8aaaec6b | 982 | uname = stat_uname (&s); |
8aaaec6b | 983 | gname = stat_gname (&s); |
8c8a7c58 | 984 | UNBLOCK_INPUT; |
6b61353c | 985 | } |
51105b13 | 986 | if (uname) |
80904120 | 987 | values[2] = DECODE_SYSTEM (build_string (uname)); |
51105b13 | 988 | else |
58a12889 | 989 | values[2] = make_fixnum_or_float (s.st_uid); |
51105b13 | 990 | if (gname) |
80904120 | 991 | values[3] = DECODE_SYSTEM (build_string (gname)); |
51105b13 | 992 | else |
58a12889 | 993 | values[3] = make_fixnum_or_float (s.st_gid); |
51105b13 | 994 | |
14d55bce RS |
995 | values[4] = make_time (s.st_atime); |
996 | values[5] = make_time (s.st_mtime); | |
997 | values[6] = make_time (s.st_ctime); | |
58a12889 | 998 | values[7] = make_fixnum_or_float (s.st_size); |
4bc12672 JR |
999 | /* If the size is negative, and its type is long, convert it back to |
1000 | positive. */ | |
1001 | if (s.st_size < 0 && sizeof (s.st_size) == sizeof (long)) | |
1002 | values[7] = make_float ((double) ((unsigned long) s.st_size)); | |
1003 | ||
14d55bce RS |
1004 | filemodestring (&s, modes); |
1005 | values[8] = make_string (modes, 10); | |
98601119 | 1006 | #ifdef BSD4_2 /* file gid will be dir gid */ |
14d55bce | 1007 | dirname = Ffile_name_directory (filename); |
24c2a54f RS |
1008 | if (! NILP (dirname)) |
1009 | encoded = ENCODE_FILE (dirname); | |
d5db4077 | 1010 | if (! NILP (dirname) && stat (SDATA (encoded), &sdir) == 0) |
01388a3d | 1011 | values[9] = (sdir.st_gid != s.st_gid) ? Qt : Qnil; |
14d55bce RS |
1012 | else /* if we can't tell, assume worst */ |
1013 | values[9] = Qt; | |
1014 | #else /* file gid will be egid */ | |
01388a3d | 1015 | values[9] = (s.st_gid != getegid ()) ? Qt : Qnil; |
98601119 | 1016 | #endif /* not BSD4_2 */ |
58a12889 | 1017 | if (!FIXNUM_OVERFLOW_P (s.st_ino)) |
e058f331 | 1018 | /* Keep the most common cases as integers. */ |
58a12889 AS |
1019 | values[10] = make_number (s.st_ino); |
1020 | else if (!FIXNUM_OVERFLOW_P (s.st_ino >> 16)) | |
4c637faa RS |
1021 | /* To allow inode numbers larger than VALBITS, separate the bottom |
1022 | 16 bits. */ | |
e058f331 EZ |
1023 | values[10] = Fcons (make_number ((EMACS_INT)(s.st_ino >> 16)), |
1024 | make_number ((EMACS_INT)(s.st_ino & 0xffff))); | |
4c637faa | 1025 | else |
e058f331 EZ |
1026 | { |
1027 | /* To allow inode numbers beyond 32 bits, separate into 2 24-bit | |
ff8ddc7b | 1028 | high parts and a 16-bit bottom part. |
25ae5671 EZ |
1029 | The code on the next line avoids a compiler warning on |
1030 | systems where st_ino is 32 bit wide. (bug#766). */ | |
ff8ddc7b | 1031 | EMACS_INT high_ino = s.st_ino >> 31 >> 1; |
e058f331 EZ |
1032 | EMACS_INT low_ino = s.st_ino & 0xffffffff; |
1033 | ||
1034 | values[10] = Fcons (make_number (high_ino >> 8), | |
1035 | Fcons (make_number (((high_ino & 0xff) << 16) | |
1036 | + (low_ino >> 16)), | |
1037 | make_number (low_ino & 0xffff))); | |
1038 | } | |
68c45bf0 | 1039 | |
58a12889 AS |
1040 | /* Likewise for device. */ |
1041 | if (FIXNUM_OVERFLOW_P (s.st_dev)) | |
68c45bf0 PE |
1042 | values[11] = Fcons (make_number (s.st_dev >> 16), |
1043 | make_number (s.st_dev & 0xffff)); | |
1044 | else | |
1045 | values[11] = make_number (s.st_dev); | |
1046 | ||
14d55bce RS |
1047 | return Flist (sizeof(values) / sizeof(values[0]), values); |
1048 | } | |
4424b255 GV |
1049 | |
1050 | DEFUN ("file-attributes-lessp", Ffile_attributes_lessp, Sfile_attributes_lessp, 2, 2, 0, | |
335c5470 PJ |
1051 | doc: /* Return t if first arg file attributes list is less than second. |
1052 | Comparison is in lexicographic order and case is significant. */) | |
5842a27b | 1053 | (Lisp_Object f1, Lisp_Object f2) |
4424b255 GV |
1054 | { |
1055 | return Fstring_lessp (Fcar (f1), Fcar (f2)); | |
1056 | } | |
14d55bce | 1057 | \f |
dfcf069d | 1058 | void |
971de7fb | 1059 | syms_of_dired (void) |
14d55bce | 1060 | { |
d67b4f80 DN |
1061 | Qdirectory_files = intern_c_string ("directory-files"); |
1062 | Qdirectory_files_and_attributes = intern_c_string ("directory-files-and-attributes"); | |
1063 | Qfile_name_completion = intern_c_string ("file-name-completion"); | |
1064 | Qfile_name_all_completions = intern_c_string ("file-name-all-completions"); | |
1065 | Qfile_attributes = intern_c_string ("file-attributes"); | |
1066 | Qfile_attributes_lessp = intern_c_string ("file-attributes-lessp"); | |
1067 | Qdefault_directory = intern_c_string ("default-directory"); | |
32f4334d | 1068 | |
a2d3836c | 1069 | staticpro (&Qdirectory_files); |
4424b255 | 1070 | staticpro (&Qdirectory_files_and_attributes); |
a2d3836c EN |
1071 | staticpro (&Qfile_name_completion); |
1072 | staticpro (&Qfile_name_all_completions); | |
1073 | staticpro (&Qfile_attributes); | |
4424b255 | 1074 | staticpro (&Qfile_attributes_lessp); |
01bb4018 | 1075 | staticpro (&Qdefault_directory); |
a2d3836c | 1076 | |
14d55bce | 1077 | defsubr (&Sdirectory_files); |
4424b255 | 1078 | defsubr (&Sdirectory_files_and_attributes); |
14d55bce | 1079 | defsubr (&Sfile_name_completion); |
14d55bce RS |
1080 | defsubr (&Sfile_name_all_completions); |
1081 | defsubr (&Sfile_attributes); | |
4424b255 | 1082 | defsubr (&Sfile_attributes_lessp); |
14d55bce | 1083 | |
29208e82 | 1084 | DEFVAR_LISP ("completion-ignored-extensions", Vcompletion_ignored_extensions, |
407a52c4 LT |
1085 | doc: /* Completion ignores file names ending in any string in this list. |
1086 | It does not ignore them if all possible completions end in one of | |
1087 | these strings or when displaying a list of completions. | |
1088 | It ignores directory names if they match any string in this list which | |
1089 | ends in a slash. */); | |
14d55bce RS |
1090 | Vcompletion_ignored_extensions = Qnil; |
1091 | } |