Commit | Line | Data |
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14d55bce | 1 | /* Lisp functions for making directory listings. |
0b5538bd | 2 | Copyright (C) 1985, 1986, 1993, 1994, 1999, 2000, 2001, 2002, 2003, |
8cabe764 | 3 | 2004, 2005, 2006, 2007, 2008 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 TTN |
29 | #endif |
30 | #ifndef VMS | |
6b61353c KH |
31 | #include <grp.h> |
32 | #endif | |
33 | ||
7cc9f69f | 34 | #include <errno.h> |
68c45bf0 | 35 | |
3ed991aa RS |
36 | #ifdef VMS |
37 | #include <string.h> | |
38 | #include <rms.h> | |
39 | #include <rmsdef.h> | |
40 | #endif | |
41 | ||
dfcf069d AS |
42 | #ifdef HAVE_UNISTD_H |
43 | #include <unistd.h> | |
44 | #endif | |
45 | ||
d6717cdb JB |
46 | /* The d_nameln member of a struct dirent includes the '\0' character |
47 | on some systems, but not on others. What's worse, you can't tell | |
48 | at compile-time which one it will be, since it really depends on | |
49 | the sort of system providing the filesystem you're reading from, | |
50 | not the system you are running on. Paul Eggert | |
51 | <eggert@bi.twinsun.com> says this occurs when Emacs is running on a | |
52 | SunOS 4.1.2 host, reading a directory that is remote-mounted from a | |
53 | Solaris 2.1 host and is in a native Solaris 2.1 filesystem. | |
54 | ||
55 | Since applying strlen to the name always works, we'll just do that. */ | |
56 | #define NAMLEN(p) strlen (p->d_name) | |
57 | ||
14d55bce RS |
58 | #ifdef SYSV_SYSTEM_DIR |
59 | ||
60 | #include <dirent.h> | |
61 | #define DIRENTRY struct dirent | |
14d55bce | 62 | |
128ecc89 | 63 | #else /* not SYSV_SYSTEM_DIR */ |
14d55bce RS |
64 | |
65 | #ifdef NONSYSTEM_DIR_LIBRARY | |
66 | #include "ndir.h" | |
67 | #else /* not NONSYSTEM_DIR_LIBRARY */ | |
128ecc89 RS |
68 | #ifdef MSDOS |
69 | #include <dirent.h> | |
70 | #else | |
14d55bce | 71 | #include <sys/dir.h> |
128ecc89 | 72 | #endif |
14d55bce RS |
73 | #endif /* not NONSYSTEM_DIR_LIBRARY */ |
74 | ||
851cab13 DL |
75 | #include <sys/stat.h> |
76 | ||
128ecc89 | 77 | #ifndef MSDOS |
14d55bce | 78 | #define DIRENTRY struct direct |
14d55bce RS |
79 | |
80 | extern DIR *opendir (); | |
81 | extern struct direct *readdir (); | |
82 | ||
128ecc89 RS |
83 | #endif /* not MSDOS */ |
84 | #endif /* not SYSV_SYSTEM_DIR */ | |
85 | ||
8f7f8c65 EZ |
86 | /* Some versions of Cygwin don't have d_ino in `struct dirent'. */ |
87 | #if defined(MSDOS) || defined(__CYGWIN__) | |
128ecc89 RS |
88 | #define DIRENTRY_NONEMPTY(p) ((p)->d_name[0] != 0) |
89 | #else | |
90 | #define DIRENTRY_NONEMPTY(p) ((p)->d_ino) | |
14d55bce RS |
91 | #endif |
92 | ||
14d55bce | 93 | #include "lisp.h" |
fa8459a3 | 94 | #include "systime.h" |
14d55bce RS |
95 | #include "buffer.h" |
96 | #include "commands.h" | |
d2f6dae8 | 97 | #include "character.h" |
bd33479f KH |
98 | #include "charset.h" |
99 | #include "coding.h" | |
14d55bce | 100 | #include "regex.h" |
8c8a7c58 | 101 | #include "blockinput.h" |
14d55bce | 102 | |
e50c66d3 KH |
103 | /* Returns a search buffer, with a fastmap allocated and ready to go. */ |
104 | extern struct re_pattern_buffer *compile_pattern (); | |
c7e466e1 | 105 | |
851cab13 DL |
106 | /* From filemode.c. Can't go in Lisp.h because of `stat'. */ |
107 | extern void filemodestring P_ ((struct stat *, char *)); | |
108 | ||
14d55bce RS |
109 | /* if system does not have symbolic links, it does not have lstat. |
110 | In that case, use ordinary stat instead. */ | |
111 | ||
112 | #ifndef S_IFLNK | |
113 | #define lstat stat | |
114 | #endif | |
115 | ||
97e98a56 | 116 | extern int completion_ignore_case; |
ecd3f8b2 | 117 | extern Lisp_Object Qcompletion_ignore_case; |
f676868d | 118 | extern Lisp_Object Vcompletion_regexp_list; |
ccbcf979 | 119 | |
14d55bce | 120 | Lisp_Object Vcompletion_ignored_extensions; |
32f4334d | 121 | Lisp_Object Qdirectory_files; |
4424b255 | 122 | Lisp_Object Qdirectory_files_and_attributes; |
32f4334d RS |
123 | Lisp_Object Qfile_name_completion; |
124 | Lisp_Object Qfile_name_all_completions; | |
434e6714 | 125 | Lisp_Object Qfile_attributes; |
4424b255 | 126 | Lisp_Object Qfile_attributes_lessp; |
b3f04ced RS |
127 | |
128 | static int scmp P_ ((unsigned char *, unsigned char *, int)); | |
14d55bce | 129 | \f |
2488aba5 AI |
130 | |
131 | Lisp_Object | |
132 | directory_files_internal_unwind (dh) | |
133 | Lisp_Object dh; | |
134 | { | |
9d291bdf | 135 | DIR *d = (DIR *) XSAVE_VALUE (dh)->pointer; |
d15b573e | 136 | BLOCK_INPUT; |
2488aba5 | 137 | closedir (d); |
d15b573e | 138 | UNBLOCK_INPUT; |
2488aba5 AI |
139 | return Qnil; |
140 | } | |
141 | ||
177c0ea7 | 142 | /* Function shared by Fdirectory_files and Fdirectory_files_and_attributes. |
4424b255 | 143 | When ATTRS is zero, return a list of directory filenames; when |
6b61353c KH |
144 | non-zero, return a list of directory filenames and their attributes. |
145 | In the latter case, ID_FORMAT is passed to Ffile_attributes. */ | |
f69f9da1 | 146 | |
4424b255 | 147 | Lisp_Object |
6b61353c | 148 | directory_files_internal (directory, full, match, nosort, attrs, id_format) |
23bd240f | 149 | Lisp_Object directory, full, match, nosort; |
4424b255 | 150 | int attrs; |
6b61353c | 151 | Lisp_Object id_format; |
14d55bce RS |
152 | { |
153 | DIR *d; | |
388ac098 GM |
154 | int directory_nbytes; |
155 | Lisp_Object list, dirfilename, encoded_directory; | |
6bbd7a29 | 156 | struct re_pattern_buffer *bufp = NULL; |
96d64004 | 157 | int needsep = 0; |
aed13378 | 158 | int count = SPECPDL_INDEX (); |
388ac098 | 159 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5; |
8e42f043 | 160 | DIRENTRY *dp; |
32f4334d | 161 | |
96d64004 | 162 | /* Because of file name handlers, these functions might call |
6155fae1 | 163 | Ffuncall, and cause a GC. */ |
388ac098 GM |
164 | list = encoded_directory = dirfilename = Qnil; |
165 | GCPRO5 (match, directory, list, dirfilename, encoded_directory); | |
96d64004 | 166 | dirfilename = Fdirectory_file_name (directory); |
6155fae1 | 167 | |
265a9e55 | 168 | if (!NILP (match)) |
14d55bce | 169 | { |
b7826503 | 170 | CHECK_STRING (match); |
ebb9e16f JB |
171 | |
172 | /* MATCH might be a flawed regular expression. Rather than | |
8e6208c5 | 173 | catching and signaling our own errors, we just call |
ebb9e16f | 174 | compile_pattern to do the work for us. */ |
c872c6b2 RS |
175 | /* Pass 1 for the MULTIBYTE arg |
176 | because we do make multibyte strings if the contents warrant. */ | |
14d55bce | 177 | #ifdef VMS |
e50c66d3 | 178 | bufp = compile_pattern (match, 0, |
3e937712 | 179 | buffer_defaults.downcase_table, 0, 1); |
1a9fbabe EZ |
180 | #else /* !VMS */ |
181 | # ifdef WINDOWSNT | |
182 | /* Windows users want case-insensitive wildcards. */ | |
183 | bufp = compile_pattern (match, 0, | |
184 | buffer_defaults.case_canon_table, 0, 1); | |
185 | # else /* !WINDOWSNT */ | |
3e937712 | 186 | bufp = compile_pattern (match, 0, Qnil, 0, 1); |
1a9fbabe EZ |
187 | # endif /* !WINDOWSNT */ |
188 | #endif /* !VMS */ | |
14d55bce RS |
189 | } |
190 | ||
b3edfc9b | 191 | /* Note: ENCODE_FILE and DECODE_FILE can GC because they can run |
388ac098 GM |
192 | run_pre_post_conversion_on_str which calls Lisp directly and |
193 | indirectly. */ | |
6c8b4f07 SM |
194 | if (STRING_MULTIBYTE (dirfilename)) |
195 | dirfilename = ENCODE_FILE (dirfilename); | |
196 | encoded_directory = (STRING_MULTIBYTE (directory) | |
197 | ? ENCODE_FILE (directory) : directory); | |
24c2a54f | 198 | |
e50c66d3 | 199 | /* Now *bufp is the compiled form of MATCH; don't call anything |
6155fae1 JB |
200 | which might compile a new regexp until we're done with the loop! */ |
201 | ||
d15b573e | 202 | BLOCK_INPUT; |
d5db4077 | 203 | d = opendir (SDATA (dirfilename)); |
d15b573e | 204 | UNBLOCK_INPUT; |
388ac098 | 205 | if (d == NULL) |
23bd240f | 206 | report_file_error ("Opening directory", Fcons (directory, Qnil)); |
14d55bce | 207 | |
2488aba5 AI |
208 | /* Unfortunately, we can now invoke expand-file-name and |
209 | file-attributes on filenames, both of which can throw, so we must | |
210 | do a proper unwind-protect. */ | |
211 | record_unwind_protect (directory_files_internal_unwind, | |
9d291bdf | 212 | make_save_value (d, 0)); |
2488aba5 | 213 | |
d5db4077 | 214 | directory_nbytes = SBYTES (directory); |
c81a9bdc | 215 | re_match_object = Qt; |
14d55bce | 216 | |
96d64004 AS |
217 | /* Decide whether we need to add a directory separator. */ |
218 | #ifndef VMS | |
388ac098 | 219 | if (directory_nbytes == 0 |
d5db4077 | 220 | || !IS_ANY_SEP (SREF (directory, directory_nbytes - 1))) |
96d64004 | 221 | needsep = 1; |
e540cbed | 222 | #endif /* not VMS */ |
96d64004 | 223 | |
8e42f043 | 224 | /* Loop reading blocks until EOF or error. */ |
f69f9da1 | 225 | for (;;) |
14d55bce | 226 | { |
f69f9da1 GM |
227 | errno = 0; |
228 | dp = readdir (d); | |
229 | ||
9d291bdf | 230 | if (dp == NULL && (0 |
f69f9da1 | 231 | #ifdef EAGAIN |
9d291bdf SM |
232 | || errno == EAGAIN |
233 | #endif | |
234 | #ifdef EINTR | |
235 | || errno == EINTR | |
f69f9da1 | 236 | #endif |
9d291bdf SM |
237 | )) |
238 | { QUIT; continue; } | |
177c0ea7 | 239 | |
f69f9da1 GM |
240 | if (dp == NULL) |
241 | break; | |
242 | ||
128ecc89 | 243 | if (DIRENTRY_NONEMPTY (dp)) |
14d55bce | 244 | { |
e23f810c | 245 | int len; |
2488aba5 | 246 | int wanted = 0; |
388ac098 GM |
247 | Lisp_Object name, finalname; |
248 | struct gcpro gcpro1, gcpro2; | |
e23f810c KH |
249 | |
250 | len = NAMLEN (dp); | |
9ad4f3e5 | 251 | name = finalname = make_unibyte_string (dp->d_name, len); |
388ac098 | 252 | GCPRO2 (finalname, name); |
177c0ea7 | 253 | |
6c8b4f07 | 254 | /* Note: DECODE_FILE can GC; it should protect its argument, |
388ac098 GM |
255 | though. */ |
256 | name = DECODE_FILE (name); | |
d5db4077 | 257 | len = SBYTES (name); |
e23f810c | 258 | |
2488aba5 AI |
259 | /* Now that we have unwind_protect in place, we might as well |
260 | allow matching to be interrupted. */ | |
261 | immediate_quit = 1; | |
262 | QUIT; | |
263 | ||
265a9e55 | 264 | if (NILP (match) |
d5db4077 | 265 | || (0 <= re_search (bufp, SDATA (name), len, 0, len, 0))) |
388ac098 | 266 | wanted = 1; |
2488aba5 AI |
267 | |
268 | immediate_quit = 0; | |
269 | ||
270 | if (wanted) | |
14d55bce | 271 | { |
265a9e55 | 272 | if (!NILP (full)) |
14d55bce | 273 | { |
e23f810c | 274 | Lisp_Object fullname; |
388ac098 GM |
275 | int nbytes = len + directory_nbytes + needsep; |
276 | int nchars; | |
5617588f | 277 | |
388ac098 | 278 | fullname = make_uninit_multibyte_string (nbytes, nbytes); |
d5db4077 | 279 | bcopy (SDATA (directory), SDATA (fullname), |
388ac098 | 280 | directory_nbytes); |
177c0ea7 | 281 | |
5617588f | 282 | if (needsep) |
d549c5db | 283 | SSET (fullname, directory_nbytes, DIRECTORY_SEP); |
177c0ea7 | 284 | |
d5db4077 KR |
285 | bcopy (SDATA (name), |
286 | SDATA (fullname) + directory_nbytes + needsep, | |
388ac098 | 287 | len); |
177c0ea7 | 288 | |
d5db4077 | 289 | nchars = chars_in_text (SDATA (fullname), nbytes); |
388ac098 GM |
290 | |
291 | /* Some bug somewhere. */ | |
292 | if (nchars > nbytes) | |
293 | abort (); | |
177c0ea7 | 294 | |
437fcd47 | 295 | STRING_SET_CHARS (fullname, nchars); |
388ac098 | 296 | if (nchars == nbytes) |
d5db4077 | 297 | STRING_SET_UNIBYTE (fullname); |
177c0ea7 | 298 | |
4424b255 GV |
299 | finalname = fullname; |
300 | } | |
aab9c564 KH |
301 | else |
302 | finalname = name; | |
4424b255 GV |
303 | |
304 | if (attrs) | |
305 | { | |
306 | /* Construct an expanded filename for the directory entry. | |
307 | Use the decoded names for input to Ffile_attributes. */ | |
388ac098 GM |
308 | Lisp_Object decoded_fullname, fileattrs; |
309 | struct gcpro gcpro1, gcpro2; | |
310 | ||
311 | decoded_fullname = fileattrs = Qnil; | |
312 | GCPRO2 (decoded_fullname, fileattrs); | |
4424b255 | 313 | |
388ac098 | 314 | /* Both Fexpand_file_name and Ffile_attributes can GC. */ |
4424b255 | 315 | decoded_fullname = Fexpand_file_name (name, directory); |
6b61353c | 316 | fileattrs = Ffile_attributes (decoded_fullname, id_format); |
4424b255 GV |
317 | |
318 | list = Fcons (Fcons (finalname, fileattrs), list); | |
388ac098 | 319 | UNGCPRO; |
4424b255 GV |
320 | } |
321 | else | |
388ac098 | 322 | list = Fcons (finalname, list); |
14d55bce | 323 | } |
388ac098 GM |
324 | |
325 | UNGCPRO; | |
14d55bce RS |
326 | } |
327 | } | |
2488aba5 | 328 | |
d15b573e | 329 | BLOCK_INPUT; |
14d55bce | 330 | closedir (d); |
d15b573e | 331 | UNBLOCK_INPUT; |
2488aba5 AI |
332 | |
333 | /* Discard the unwind protect. */ | |
334 | specpdl_ptr = specpdl + count; | |
335 | ||
388ac098 GM |
336 | if (NILP (nosort)) |
337 | list = Fsort (Fnreverse (list), | |
338 | attrs ? Qfile_attributes_lessp : Qstring_lessp); | |
177c0ea7 | 339 | |
388ac098 | 340 | RETURN_UNGCPRO (list); |
14d55bce | 341 | } |
4424b255 GV |
342 | |
343 | ||
344 | DEFUN ("directory-files", Fdirectory_files, Sdirectory_files, 1, 4, 0, | |
335c5470 PJ |
345 | doc: /* Return a list of names of files in DIRECTORY. |
346 | There are three optional arguments: | |
347 | If FULL is non-nil, return absolute file names. Otherwise return names | |
348 | that are relative to the specified directory. | |
349 | If MATCH is non-nil, mention only file names that match the regexp MATCH. | |
350 | If NOSORT is non-nil, the list is not sorted--its order is unpredictable. | |
351 | NOSORT is useful if you plan to sort the result yourself. */) | |
352 | (directory, full, match, nosort) | |
4424b255 GV |
353 | Lisp_Object directory, full, match, nosort; |
354 | { | |
355 | Lisp_Object handler; | |
4ece81a6 | 356 | directory = Fexpand_file_name (directory, Qnil); |
4424b255 GV |
357 | |
358 | /* If the file name has special constructs in it, | |
359 | call the corresponding file handler. */ | |
360 | handler = Ffind_file_name_handler (directory, Qdirectory_files); | |
361 | if (!NILP (handler)) | |
6b61353c KH |
362 | return call5 (handler, Qdirectory_files, directory, |
363 | full, match, nosort); | |
4424b255 | 364 | |
6b61353c | 365 | return directory_files_internal (directory, full, match, nosort, 0, Qnil); |
4424b255 GV |
366 | } |
367 | ||
335c5470 | 368 | DEFUN ("directory-files-and-attributes", Fdirectory_files_and_attributes, |
6b61353c | 369 | Sdirectory_files_and_attributes, 1, 5, 0, |
335c5470 | 370 | doc: /* Return a list of names of files and their attributes in DIRECTORY. |
6b61353c | 371 | There are four optional arguments: |
335c5470 PJ |
372 | If FULL is non-nil, return absolute file names. Otherwise return names |
373 | that are relative to the specified directory. | |
374 | If MATCH is non-nil, mention only file names that match the regexp MATCH. | |
375 | If NOSORT is non-nil, the list is not sorted--its order is unpredictable. | |
6b61353c KH |
376 | NOSORT is useful if you plan to sort the result yourself. |
377 | ID-FORMAT specifies the preferred format of attributes uid and gid, see | |
6c5665e9 EZ |
378 | `file-attributes' for further documentation. |
379 | On MS-Windows, performance depends on `w32-get-true-file-attributes', | |
380 | which see. */) | |
6b61353c KH |
381 | (directory, full, match, nosort, id_format) |
382 | Lisp_Object directory, full, match, nosort, id_format; | |
4424b255 GV |
383 | { |
384 | Lisp_Object handler; | |
4ece81a6 | 385 | directory = Fexpand_file_name (directory, Qnil); |
4424b255 GV |
386 | |
387 | /* If the file name has special constructs in it, | |
388 | call the corresponding file handler. */ | |
389 | handler = Ffind_file_name_handler (directory, Qdirectory_files_and_attributes); | |
390 | if (!NILP (handler)) | |
6b61353c KH |
391 | return call6 (handler, Qdirectory_files_and_attributes, |
392 | directory, full, match, nosort, id_format); | |
4424b255 | 393 | |
6b61353c | 394 | return directory_files_internal (directory, full, match, nosort, 1, id_format); |
4424b255 GV |
395 | } |
396 | ||
14d55bce RS |
397 | \f |
398 | Lisp_Object file_name_completion (); | |
399 | ||
400 | DEFUN ("file-name-completion", Ffile_name_completion, Sfile_name_completion, | |
abfb1932 | 401 | 2, 3, 0, |
335c5470 PJ |
402 | doc: /* Complete file name FILE in directory DIRECTORY. |
403 | Returns the longest string | |
404 | common to all file names in DIRECTORY that start with FILE. | |
405 | If there is only one and FILE matches it exactly, returns t. | |
2f60660a | 406 | Returns nil if DIRECTORY contains no name starting with FILE. |
335c5470 | 407 | |
b6ce54d6 RS |
408 | If PREDICATE is non-nil, call PREDICATE with each possible |
409 | completion (in absolute form) and ignore it if PREDICATE returns nil. | |
410 | ||
335c5470 PJ |
411 | This function ignores some of the possible completions as |
412 | determined by the variable `completion-ignored-extensions', which see. */) | |
abfb1932 RS |
413 | (file, directory, predicate) |
414 | Lisp_Object file, directory, predicate; | |
14d55bce | 415 | { |
32f4334d | 416 | Lisp_Object handler; |
32f4334d | 417 | |
8436e231 | 418 | /* If the directory name has special constructs in it, |
32f4334d | 419 | call the corresponding file handler. */ |
23bd240f | 420 | handler = Ffind_file_name_handler (directory, Qfile_name_completion); |
32f4334d | 421 | if (!NILP (handler)) |
abfb1932 | 422 | return call4 (handler, Qfile_name_completion, file, directory, predicate); |
32f4334d | 423 | |
8436e231 RS |
424 | /* If the file name has special constructs in it, |
425 | call the corresponding file handler. */ | |
426 | handler = Ffind_file_name_handler (file, Qfile_name_completion); | |
427 | if (!NILP (handler)) | |
abfb1932 | 428 | return call4 (handler, Qfile_name_completion, file, directory, predicate); |
8436e231 | 429 | |
abfb1932 | 430 | return file_name_completion (file, directory, 0, 0, predicate); |
14d55bce RS |
431 | } |
432 | ||
433 | DEFUN ("file-name-all-completions", Ffile_name_all_completions, | |
335c5470 PJ |
434 | Sfile_name_all_completions, 2, 2, 0, |
435 | doc: /* Return a list of all completions of file name FILE in directory DIRECTORY. | |
436 | These are all file names in directory DIRECTORY which begin with FILE. */) | |
437 | (file, directory) | |
23bd240f | 438 | Lisp_Object file, directory; |
14d55bce | 439 | { |
32f4334d RS |
440 | Lisp_Object handler; |
441 | ||
8436e231 | 442 | /* If the directory name has special constructs in it, |
32f4334d | 443 | call the corresponding file handler. */ |
23bd240f | 444 | handler = Ffind_file_name_handler (directory, Qfile_name_all_completions); |
32f4334d | 445 | if (!NILP (handler)) |
23bd240f | 446 | return call3 (handler, Qfile_name_all_completions, file, directory); |
32f4334d | 447 | |
8436e231 RS |
448 | /* If the file name has special constructs in it, |
449 | call the corresponding file handler. */ | |
450 | handler = Ffind_file_name_handler (file, Qfile_name_all_completions); | |
451 | if (!NILP (handler)) | |
23bd240f | 452 | return call3 (handler, Qfile_name_all_completions, file, directory); |
8436e231 | 453 | |
abfb1932 | 454 | return file_name_completion (file, directory, 1, 0, Qnil); |
14d55bce RS |
455 | } |
456 | ||
dfcf069d | 457 | static int file_name_completion_stat (); |
01bb4018 | 458 | Lisp_Object Qdefault_directory; |
dfcf069d | 459 | |
14d55bce | 460 | Lisp_Object |
abfb1932 | 461 | file_name_completion (file, dirname, all_flag, ver_flag, predicate) |
14d55bce RS |
462 | Lisp_Object file, dirname; |
463 | int all_flag, ver_flag; | |
abfb1932 | 464 | Lisp_Object predicate; |
14d55bce RS |
465 | { |
466 | DIR *d; | |
3271a8f5 | 467 | int bestmatchsize = 0; |
14d55bce | 468 | int matchcount = 0; |
abfb1932 RS |
469 | /* If ALL_FLAG is 1, BESTMATCH is the list of all matches, decoded. |
470 | If ALL_FLAG is 0, BESTMATCH is either nil | |
471 | or the best match so far, not decoded. */ | |
14d55bce | 472 | Lisp_Object bestmatch, tem, elt, name; |
24c2a54f RS |
473 | Lisp_Object encoded_file; |
474 | Lisp_Object encoded_dir; | |
14d55bce RS |
475 | struct stat st; |
476 | int directoryp; | |
3271a8f5 SM |
477 | /* If includeall is zero, exclude files in completion-ignored-extensions as |
478 | well as "." and "..". Until shown otherwise, assume we can't exclude | |
479 | anything. */ | |
480 | int includeall = 1; | |
aed13378 | 481 | int count = SPECPDL_INDEX (); |
24c2a54f | 482 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5; |
3fcc88cc | 483 | |
6bbd7a29 GM |
484 | elt = Qnil; |
485 | ||
14d55bce RS |
486 | #ifdef VMS |
487 | extern DIRENTRY * readdirver (); | |
488 | ||
489 | DIRENTRY *((* readfunc) ()); | |
490 | ||
491 | /* Filename completion on VMS ignores case, since VMS filesys does. */ | |
492 | specbind (Qcompletion_ignore_case, Qt); | |
493 | ||
494 | readfunc = readdir; | |
495 | if (ver_flag) | |
496 | readfunc = readdirver; | |
497 | file = Fupcase (file); | |
498 | #else /* not VMS */ | |
b7826503 | 499 | CHECK_STRING (file); |
14d55bce RS |
500 | #endif /* not VMS */ |
501 | ||
128ecc89 RS |
502 | #ifdef FILE_SYSTEM_CASE |
503 | file = FILE_SYSTEM_CASE (file); | |
504 | #endif | |
14d55bce | 505 | bestmatch = Qnil; |
24c2a54f RS |
506 | encoded_file = encoded_dir = Qnil; |
507 | GCPRO5 (file, dirname, bestmatch, encoded_file, encoded_dir); | |
3fcc88cc | 508 | dirname = Fexpand_file_name (dirname, Qnil); |
01bb4018 | 509 | specbind (Qdefault_directory, dirname); |
14d55bce | 510 | |
24c2a54f RS |
511 | /* Do completion on the encoded file name |
512 | because the other names in the directory are (we presume) | |
513 | encoded likewise. We decode the completed string at the end. */ | |
2a54a229 SM |
514 | /* Actually, this is not quite true any more: we do most of the completion |
515 | work with decoded file names, but we still do some filtering based | |
516 | on the encoded file name. */ | |
6c8b4f07 | 517 | encoded_file = STRING_MULTIBYTE (file) ? ENCODE_FILE (file) : file; |
24c2a54f RS |
518 | |
519 | encoded_dir = ENCODE_FILE (dirname); | |
520 | ||
3271a8f5 SM |
521 | BLOCK_INPUT; |
522 | d = opendir (SDATA (Fdirectory_file_name (encoded_dir))); | |
523 | UNBLOCK_INPUT; | |
524 | if (!d) | |
525 | report_file_error ("Opening directory", Fcons (dirname, Qnil)); | |
14d55bce | 526 | |
3271a8f5 SM |
527 | record_unwind_protect (directory_files_internal_unwind, |
528 | make_save_value (d, 0)); | |
14d55bce | 529 | |
3271a8f5 SM |
530 | /* Loop reading blocks */ |
531 | /* (att3b compiler bug requires do a null comparison this way) */ | |
532 | while (1) | |
14d55bce | 533 | { |
3271a8f5 SM |
534 | DIRENTRY *dp; |
535 | int len; | |
536 | int canexclude = 0; | |
14d55bce RS |
537 | |
538 | #ifdef VMS | |
3271a8f5 | 539 | dp = (*readfunc) (d); |
14d55bce | 540 | #else |
3271a8f5 SM |
541 | errno = 0; |
542 | dp = readdir (d); | |
543 | if (dp == NULL && (0 | |
9d291bdf | 544 | # ifdef EAGAIN |
3271a8f5 | 545 | || errno == EAGAIN |
9d291bdf SM |
546 | # endif |
547 | # ifdef EINTR | |
3271a8f5 | 548 | || errno == EINTR |
9d291bdf | 549 | # endif |
3271a8f5 SM |
550 | )) |
551 | { QUIT; continue; } | |
14d55bce | 552 | #endif |
9d291bdf | 553 | |
3271a8f5 | 554 | if (!dp) break; |
14d55bce | 555 | |
3271a8f5 | 556 | len = NAMLEN (dp); |
14d55bce | 557 | |
3271a8f5 SM |
558 | QUIT; |
559 | if (! DIRENTRY_NONEMPTY (dp) | |
560 | || len < SCHARS (encoded_file) | |
561 | || 0 <= scmp (dp->d_name, SDATA (encoded_file), | |
562 | SCHARS (encoded_file))) | |
563 | continue; | |
14d55bce | 564 | |
3271a8f5 SM |
565 | if (file_name_completion_stat (encoded_dir, dp, &st) < 0) |
566 | continue; | |
14d55bce | 567 | |
3271a8f5 SM |
568 | directoryp = ((st.st_mode & S_IFMT) == S_IFDIR); |
569 | tem = Qnil; | |
570 | /* If all_flag is set, always include all. | |
571 | It would not actually be helpful to the user to ignore any possible | |
572 | completions when making a list of them. */ | |
573 | if (!all_flag) | |
574 | { | |
575 | int skip; | |
576 | if (directoryp) | |
ad456ad4 RS |
577 | { |
578 | #ifndef TRIVIAL_DIRECTORY_ENTRY | |
579 | #define TRIVIAL_DIRECTORY_ENTRY(n) (!strcmp (n, ".") || !strcmp (n, "..")) | |
580 | #endif | |
abfb1932 RS |
581 | /* "." and ".." are never interesting as completions, and are |
582 | actually in the way in a directory with only one file. */ | |
3271a8f5 SM |
583 | if (TRIVIAL_DIRECTORY_ENTRY (dp->d_name)) |
584 | canexclude = 1; | |
585 | else if (len > SCHARS (encoded_file)) | |
d013f29b EZ |
586 | /* Ignore directories if they match an element of |
587 | completion-ignored-extensions which ends in a slash. */ | |
588 | for (tem = Vcompletion_ignored_extensions; | |
589 | CONSP (tem); tem = XCDR (tem)) | |
590 | { | |
591 | int elt_len; | |
2a54a229 | 592 | unsigned char *p1; |
d013f29b EZ |
593 | |
594 | elt = XCAR (tem); | |
595 | if (!STRINGP (elt)) | |
596 | continue; | |
a74aaa9d EZ |
597 | /* Need to encode ELT, since scmp compares unibyte |
598 | strings only. */ | |
599 | elt = ENCODE_FILE (elt); | |
d5db4077 | 600 | elt_len = SCHARS (elt) - 1; /* -1 for trailing / */ |
7a8d465a | 601 | if (elt_len <= 0) |
d013f29b | 602 | continue; |
d5db4077 | 603 | p1 = SDATA (elt); |
d013f29b EZ |
604 | if (p1[elt_len] != '/') |
605 | continue; | |
606 | skip = len - elt_len; | |
607 | if (skip < 0) | |
608 | continue; | |
609 | ||
610 | if (0 <= scmp (dp->d_name + skip, p1, elt_len)) | |
611 | continue; | |
612 | break; | |
613 | } | |
ad456ad4 RS |
614 | } |
615 | else | |
3271a8f5 | 616 | { |
14d55bce RS |
617 | /* Compare extensions-to-be-ignored against end of this file name */ |
618 | /* if name is not an exact match against specified string */ | |
3271a8f5 | 619 | if (len > SCHARS (encoded_file)) |
14d55bce RS |
620 | /* and exit this for loop if a match is found */ |
621 | for (tem = Vcompletion_ignored_extensions; | |
70949dac | 622 | CONSP (tem); tem = XCDR (tem)) |
14d55bce | 623 | { |
70949dac | 624 | elt = XCAR (tem); |
88cf1852 | 625 | if (!STRINGP (elt)) continue; |
a74aaa9d EZ |
626 | /* Need to encode ELT, since scmp compares unibyte |
627 | strings only. */ | |
628 | elt = ENCODE_FILE (elt); | |
d5db4077 | 629 | skip = len - SCHARS (elt); |
14d55bce RS |
630 | if (skip < 0) continue; |
631 | ||
632 | if (0 <= scmp (dp->d_name + skip, | |
d5db4077 KR |
633 | SDATA (elt), |
634 | SCHARS (elt))) | |
14d55bce RS |
635 | continue; |
636 | break; | |
637 | } | |
638 | } | |
639 | ||
f676868d KH |
640 | /* If an ignored-extensions match was found, |
641 | don't process this name as a completion. */ | |
3271a8f5 SM |
642 | if (CONSP (tem)) |
643 | canexclude = 1; | |
f676868d | 644 | |
3271a8f5 SM |
645 | if (!includeall && canexclude) |
646 | /* We're not including all files and this file can be excluded. */ | |
647 | continue; | |
9c691c00 | 648 | |
3271a8f5 SM |
649 | if (includeall && !canexclude) |
650 | { /* If we have one non-excludable file, we want to exclude the | |
651 | excudable files. */ | |
652 | includeall = 0; | |
653 | /* Throw away any previous excludable match found. */ | |
654 | bestmatch = Qnil; | |
655 | bestmatchsize = 0; | |
656 | matchcount = 0; | |
f676868d | 657 | } |
3271a8f5 SM |
658 | } |
659 | /* FIXME: If we move this `decode' earlier we can eliminate | |
660 | the repeated ENCODE_FILE on Vcompletion_ignored_extensions. */ | |
661 | name = make_unibyte_string (dp->d_name, len); | |
662 | name = DECODE_FILE (name); | |
663 | ||
664 | { | |
665 | Lisp_Object regexps; | |
666 | Lisp_Object zero; | |
667 | XSETFASTINT (zero, 0); | |
668 | ||
669 | /* Ignore this element if it fails to match all the regexps. */ | |
670 | for (regexps = Vcompletion_regexp_list; CONSP (regexps); | |
671 | regexps = XCDR (regexps)) | |
672 | if (fast_string_match (XCAR (regexps), name) < 0) | |
673 | break; | |
674 | if (CONSP (regexps)) | |
675 | continue; | |
676 | } | |
677 | ||
678 | /* This is a possible completion */ | |
679 | if (directoryp) | |
680 | /* This completion is a directory; make it end with '/'. */ | |
681 | name = Ffile_name_as_directory (name); | |
682 | ||
683 | /* Test the predicate, if any. */ | |
684 | if (!NILP (predicate)) | |
685 | { | |
686 | Lisp_Object val; | |
687 | struct gcpro gcpro1; | |
14d55bce | 688 | |
3271a8f5 SM |
689 | GCPRO1 (name); |
690 | val = call1 (predicate, name); | |
691 | UNGCPRO; | |
c4c52bb7 | 692 | |
3271a8f5 SM |
693 | if (NILP (val)) |
694 | continue; | |
695 | } | |
abfb1932 | 696 | |
3271a8f5 | 697 | /* Suitably record this match. */ |
14d55bce | 698 | |
3271a8f5 | 699 | matchcount++; |
f676868d | 700 | |
3271a8f5 SM |
701 | if (all_flag) |
702 | bestmatch = Fcons (name, bestmatch); | |
703 | else if (NILP (bestmatch)) | |
704 | { | |
705 | bestmatch = name; | |
706 | bestmatchsize = SCHARS (name); | |
707 | } | |
708 | else | |
709 | { | |
710 | Lisp_Object zero = make_number (0); | |
711 | /* FIXME: This is a copy of the code in Ftry_completion. */ | |
712 | int compare = min (bestmatchsize, SCHARS (name)); | |
713 | Lisp_Object tem | |
714 | = Fcompare_strings (bestmatch, zero, | |
715 | make_number (compare), | |
716 | name, zero, | |
717 | make_number (compare), | |
718 | completion_ignore_case ? Qt : Qnil); | |
719 | int matchsize | |
720 | = (EQ (tem, Qt) ? compare | |
721 | : XINT (tem) < 0 ? - XINT (tem) - 1 | |
722 | : XINT (tem) - 1); | |
723 | ||
724 | if (completion_ignore_case) | |
f676868d | 725 | { |
3271a8f5 SM |
726 | /* If this is an exact match except for case, |
727 | use it as the best match rather than one that is not | |
728 | an exact match. This way, we get the case pattern | |
729 | of the actual match. */ | |
730 | /* This tests that the current file is an exact match | |
731 | but BESTMATCH is not (it is too long). */ | |
732 | if ((matchsize == SCHARS (name) | |
733 | && matchsize + !!directoryp | |
734 | < SCHARS (bestmatch)) | |
735 | || | |
736 | /* If there is no exact match ignoring case, | |
737 | prefer a match that does not change the case | |
738 | of the input. */ | |
739 | /* If there is more than one exact match aside from | |
740 | case, and one of them is exact including case, | |
741 | prefer that one. */ | |
742 | /* This == checks that, of current file and BESTMATCH, | |
743 | either both or neither are exact. */ | |
744 | (((matchsize == SCHARS (name)) | |
745 | == | |
746 | (matchsize + !!directoryp == SCHARS (bestmatch))) | |
747 | && (tem = Fcompare_strings (name, zero, | |
748 | make_number (SCHARS (file)), | |
749 | file, zero, | |
750 | Qnil, | |
751 | Qnil), | |
752 | EQ (Qt, tem)) | |
753 | && (tem = Fcompare_strings (bestmatch, zero, | |
754 | make_number (SCHARS (file)), | |
755 | file, zero, | |
756 | Qnil, | |
757 | Qnil), | |
758 | ! EQ (Qt, tem)))) | |
759 | bestmatch = name; | |
14d55bce | 760 | } |
3271a8f5 | 761 | bestmatchsize = matchsize; |
14d55bce | 762 | } |
14d55bce RS |
763 | } |
764 | ||
3fcc88cc | 765 | UNGCPRO; |
3271a8f5 | 766 | /* This closes the directory. */ |
c3a3229c | 767 | bestmatch = unbind_to (count, bestmatch); |
14d55bce | 768 | |
265a9e55 | 769 | if (all_flag || NILP (bestmatch)) |
2a54a229 SM |
770 | return bestmatch; |
771 | if (matchcount == 1 && bestmatchsize == SCHARS (file)) | |
14d55bce | 772 | return Qt; |
24c2a54f RS |
773 | bestmatch = Fsubstring (bestmatch, make_number (0), |
774 | make_number (bestmatchsize)); | |
24c2a54f | 775 | return bestmatch; |
14d55bce RS |
776 | } |
777 | ||
b3f04ced RS |
778 | /* Compare exactly LEN chars of strings at S1 and S2, |
779 | ignoring case if appropriate. | |
780 | Return -1 if strings match, | |
781 | else number of chars that match at the beginning. */ | |
782 | ||
783 | static int | |
784 | scmp (s1, s2, len) | |
785 | register unsigned char *s1, *s2; | |
786 | int len; | |
787 | { | |
788 | register int l = len; | |
789 | ||
790 | if (completion_ignore_case) | |
791 | { | |
792 | while (l && DOWNCASE (*s1++) == DOWNCASE (*s2++)) | |
793 | l--; | |
794 | } | |
795 | else | |
796 | { | |
797 | while (l && *s1++ == *s2++) | |
798 | l--; | |
799 | } | |
800 | if (l == 0) | |
801 | return -1; | |
802 | else | |
803 | return len - l; | |
804 | } | |
805 | ||
dfcf069d | 806 | static int |
14d55bce RS |
807 | file_name_completion_stat (dirname, dp, st_addr) |
808 | Lisp_Object dirname; | |
809 | DIRENTRY *dp; | |
810 | struct stat *st_addr; | |
811 | { | |
812 | int len = NAMLEN (dp); | |
d5db4077 | 813 | int pos = SCHARS (dirname); |
7e3cf34f | 814 | int value; |
14d55bce RS |
815 | char *fullname = (char *) alloca (len + pos + 2); |
816 | ||
04924ee3 RS |
817 | #ifdef MSDOS |
818 | #if __DJGPP__ > 1 | |
819 | /* Some fields of struct stat are *very* expensive to compute on MS-DOS, | |
820 | but aren't required here. Avoid computing the following fields: | |
821 | st_inode, st_size and st_nlink for directories, and the execute bits | |
822 | in st_mode for non-directory files with non-standard extensions. */ | |
823 | ||
824 | unsigned short save_djstat_flags = _djstat_flags; | |
825 | ||
826 | _djstat_flags = _STAT_INODE | _STAT_EXEC_MAGIC | _STAT_DIRSIZE; | |
827 | #endif /* __DJGPP__ > 1 */ | |
828 | #endif /* MSDOS */ | |
829 | ||
d5db4077 | 830 | bcopy (SDATA (dirname), fullname, pos); |
14d55bce | 831 | #ifndef VMS |
0b39d75d RS |
832 | if (!IS_DIRECTORY_SEP (fullname[pos - 1])) |
833 | fullname[pos++] = DIRECTORY_SEP; | |
14d55bce RS |
834 | #endif |
835 | ||
836 | bcopy (dp->d_name, fullname + pos, len); | |
837 | fullname[pos + len] = 0; | |
838 | ||
a889bd0e | 839 | #ifdef S_IFLNK |
7e3cf34f RS |
840 | /* We want to return success if a link points to a nonexistent file, |
841 | but we want to return the status for what the link points to, | |
842 | in case it is a directory. */ | |
843 | value = lstat (fullname, st_addr); | |
844 | stat (fullname, st_addr); | |
845 | return value; | |
a889bd0e | 846 | #else |
04924ee3 RS |
847 | value = stat (fullname, st_addr); |
848 | #ifdef MSDOS | |
849 | #if __DJGPP__ > 1 | |
850 | _djstat_flags = save_djstat_flags; | |
851 | #endif /* __DJGPP__ > 1 */ | |
852 | #endif /* MSDOS */ | |
853 | return value; | |
854 | #endif /* S_IFLNK */ | |
14d55bce RS |
855 | } |
856 | \f | |
3ed991aa RS |
857 | #ifdef VMS |
858 | ||
859 | DEFUN ("file-name-all-versions", Ffile_name_all_versions, | |
335c5470 PJ |
860 | Sfile_name_all_versions, 2, 2, 0, |
861 | doc: /* Return a list of all versions of file name FILE in directory DIRECTORY. */) | |
862 | (file, directory) | |
23bd240f | 863 | Lisp_Object file, directory; |
3ed991aa | 864 | { |
abfb1932 | 865 | return file_name_completion (file, directory, 1, 1, Qnil); |
3ed991aa RS |
866 | } |
867 | ||
868 | DEFUN ("file-version-limit", Ffile_version_limit, Sfile_version_limit, 1, 1, 0, | |
335c5470 PJ |
869 | doc: /* Return the maximum number of versions allowed for FILE. |
870 | Returns nil if the file cannot be opened or if there is no version limit. */) | |
871 | (filename) | |
3ed991aa RS |
872 | Lisp_Object filename; |
873 | { | |
874 | Lisp_Object retval; | |
875 | struct FAB fab; | |
876 | struct RAB rab; | |
877 | struct XABFHC xabfhc; | |
878 | int status; | |
879 | ||
880 | filename = Fexpand_file_name (filename, Qnil); | |
881 | fab = cc$rms_fab; | |
882 | xabfhc = cc$rms_xabfhc; | |
d5db4077 | 883 | fab.fab$l_fna = SDATA (filename); |
3ed991aa RS |
884 | fab.fab$b_fns = strlen (fab.fab$l_fna); |
885 | fab.fab$l_xab = (char *) &xabfhc; | |
886 | status = sys$open (&fab, 0, 0); | |
887 | if (status != RMS$_NORMAL) /* Probably non-existent file */ | |
888 | return Qnil; | |
889 | sys$close (&fab, 0, 0); | |
890 | if (xabfhc.xab$w_verlimit == 32767) | |
891 | return Qnil; /* No version limit */ | |
892 | else | |
893 | return make_number (xabfhc.xab$w_verlimit); | |
894 | } | |
895 | ||
896 | #endif /* VMS */ | |
897 | \f | |
14d55bce RS |
898 | Lisp_Object |
899 | make_time (time) | |
e5124be7 | 900 | time_t time; |
14d55bce RS |
901 | { |
902 | return Fcons (make_number (time >> 16), | |
903 | Fcons (make_number (time & 0177777), Qnil)); | |
904 | } | |
905 | ||
8aaaec6b EZ |
906 | static char * |
907 | stat_uname (struct stat *st) | |
908 | { | |
909 | #ifdef WINDOWSNT | |
910 | return st->st_uname; | |
911 | #else | |
912 | struct passwd *pw = (struct passwd *) getpwuid (st->st_uid); | |
913 | ||
914 | if (pw) | |
915 | return pw->pw_name; | |
916 | else | |
917 | return NULL; | |
918 | #endif | |
919 | } | |
920 | ||
921 | static char * | |
922 | stat_gname (struct stat *st) | |
923 | { | |
924 | #ifdef WINDOWSNT | |
925 | return st->st_gname; | |
926 | #else | |
927 | struct group *gr = (struct group *) getgrgid (st->st_gid); | |
928 | ||
929 | if (gr) | |
930 | return gr->gr_name; | |
931 | else | |
932 | return NULL; | |
933 | #endif | |
934 | } | |
935 | ||
6b61353c | 936 | DEFUN ("file-attributes", Ffile_attributes, Sfile_attributes, 1, 2, 0, |
335c5470 PJ |
937 | doc: /* Return a list of attributes of file FILENAME. |
938 | Value is nil if specified file cannot be opened. | |
6b61353c KH |
939 | |
940 | ID-FORMAT specifies the preferred format of attributes uid and gid (see | |
941 | below) - valid values are 'string and 'integer. The latter is the default, | |
942 | but we plan to change that, so you should specify a non-nil value for | |
943 | ID-FORMAT if you use the returned uid or gid. | |
944 | ||
945 | Elements of the attribute list are: | |
335c5470 PJ |
946 | 0. t for directory, string (name linked to) for symbolic link, or nil. |
947 | 1. Number of links to file. | |
6b61353c KH |
948 | 2. File uid as a string or an integer. If a string value cannot be |
949 | looked up, the integer value is returned. | |
950 | 3. File gid, likewise. | |
335c5470 PJ |
951 | 4. Last access time, as a list of two integers. |
952 | First integer has high-order 16 bits of time, second has low 16 bits. | |
953 | 5. Last modification time, likewise. | |
954 | 6. Last status change time, likewise. | |
955 | 7. Size in bytes. | |
956 | This is a floating point number if the size is too large for an integer. | |
957 | 8. File modes, as a string of ten letters or dashes as in ls -l. | |
e0f24100 | 958 | 9. t if file's gid would change if file were deleted and recreated. |
335c5470 | 959 | 10. inode number. If inode number is larger than the Emacs integer, |
e058f331 EZ |
960 | but still fits into a 32-bit number, this is a cons cell containing two |
961 | integers: first the high part, then the low 16 bits. If the inode number | |
962 | is wider than 32 bits, this is a cons cell containing three integers: | |
963 | first the high 24 bits, then middle 24 bits, and finally the low 16 bits. | |
335c5470 | 964 | 11. Device number. If it is larger than the Emacs integer, this is |
6c5665e9 EZ |
965 | a cons cell, similar to the inode number. |
966 | ||
967 | On MS-Windows, performance depends on `w32-get-true-file-attributes', | |
968 | which see. */) | |
6b61353c KH |
969 | (filename, id_format) |
970 | Lisp_Object filename, id_format; | |
14d55bce RS |
971 | { |
972 | Lisp_Object values[12]; | |
24c2a54f | 973 | Lisp_Object encoded; |
14d55bce | 974 | struct stat s; |
0a974c85 | 975 | #if defined (BSD4_2) || defined (BSD4_3) |
b3edfc9b | 976 | Lisp_Object dirname; |
14d55bce | 977 | struct stat sdir; |
b3edfc9b | 978 | #endif |
14d55bce | 979 | char modes[10]; |
32f4334d | 980 | Lisp_Object handler; |
7435aef8 | 981 | struct gcpro gcpro1; |
01388a3d | 982 | EMACS_INT ino; |
8aaaec6b | 983 | char *uname, *gname; |
14d55bce RS |
984 | |
985 | filename = Fexpand_file_name (filename, Qnil); | |
32f4334d RS |
986 | |
987 | /* If the file name has special constructs in it, | |
988 | call the corresponding file handler. */ | |
a617e913 | 989 | handler = Ffind_file_name_handler (filename, Qfile_attributes); |
32f4334d | 990 | if (!NILP (handler)) |
6b61353c KH |
991 | { /* Only pass the extra arg if it is used to help backward compatibility |
992 | with old file handlers which do not implement the new arg. --Stef */ | |
993 | if (NILP (id_format)) | |
994 | return call2 (handler, Qfile_attributes, filename); | |
995 | else | |
996 | return call3 (handler, Qfile_attributes, filename, id_format); | |
997 | } | |
32f4334d | 998 | |
7435aef8 | 999 | GCPRO1 (filename); |
24c2a54f | 1000 | encoded = ENCODE_FILE (filename); |
7435aef8 | 1001 | UNGCPRO; |
24c2a54f | 1002 | |
d5db4077 | 1003 | if (lstat (SDATA (encoded), &s) < 0) |
14d55bce RS |
1004 | return Qnil; |
1005 | ||
1006 | switch (s.st_mode & S_IFMT) | |
1007 | { | |
1008 | default: | |
1009 | values[0] = Qnil; break; | |
1010 | case S_IFDIR: | |
1011 | values[0] = Qt; break; | |
1012 | #ifdef S_IFLNK | |
1013 | case S_IFLNK: | |
1014 | values[0] = Ffile_symlink_p (filename); break; | |
1015 | #endif | |
1016 | } | |
1017 | values[1] = make_number (s.st_nlink); | |
6b61353c KH |
1018 | if (NILP (id_format) || EQ (id_format, Qinteger)) |
1019 | { | |
01388a3d EZ |
1020 | values[2] = make_fixnum_or_float (s.st_uid); |
1021 | values[3] = make_fixnum_or_float (s.st_gid); | |
6b61353c KH |
1022 | } |
1023 | else | |
1024 | { | |
8c8a7c58 | 1025 | BLOCK_INPUT; |
8aaaec6b EZ |
1026 | uname = stat_uname (&s); |
1027 | values[2] = (uname ? build_string (uname) | |
1028 | : make_fixnum_or_float (s.st_uid)); | |
1029 | gname = stat_gname (&s); | |
1030 | values[3] = (gname ? build_string (gname) | |
1031 | : make_fixnum_or_float (s.st_gid)); | |
8c8a7c58 | 1032 | UNBLOCK_INPUT; |
6b61353c | 1033 | } |
14d55bce RS |
1034 | values[4] = make_time (s.st_atime); |
1035 | values[5] = make_time (s.st_mtime); | |
1036 | values[6] = make_time (s.st_ctime); | |
68c45bf0 | 1037 | values[7] = make_number (s.st_size); |
cb1846b4 | 1038 | /* If the size is out of range for an integer, return a float. */ |
60fc6069 | 1039 | if (XINT (values[7]) != s.st_size) |
cb1846b4 | 1040 | values[7] = make_float ((double)s.st_size); |
4bc12672 JR |
1041 | /* If the size is negative, and its type is long, convert it back to |
1042 | positive. */ | |
1043 | if (s.st_size < 0 && sizeof (s.st_size) == sizeof (long)) | |
1044 | values[7] = make_float ((double) ((unsigned long) s.st_size)); | |
1045 | ||
14d55bce RS |
1046 | filemodestring (&s, modes); |
1047 | values[8] = make_string (modes, 10); | |
0a974c85 | 1048 | #if defined (BSD4_2) || defined (BSD4_3) /* file gid will be dir gid */ |
14d55bce | 1049 | dirname = Ffile_name_directory (filename); |
24c2a54f RS |
1050 | if (! NILP (dirname)) |
1051 | encoded = ENCODE_FILE (dirname); | |
d5db4077 | 1052 | if (! NILP (dirname) && stat (SDATA (encoded), &sdir) == 0) |
01388a3d | 1053 | values[9] = (sdir.st_gid != s.st_gid) ? Qt : Qnil; |
14d55bce RS |
1054 | else /* if we can't tell, assume worst */ |
1055 | values[9] = Qt; | |
1056 | #else /* file gid will be egid */ | |
01388a3d | 1057 | values[9] = (s.st_gid != getegid ()) ? Qt : Qnil; |
14d55bce | 1058 | #endif /* BSD4_2 (or BSD4_3) */ |
b55445d6 | 1059 | /* Shut up GCC warnings in FIXNUM_OVERFLOW_P below. */ |
e058f331 EZ |
1060 | if (sizeof (s.st_ino) > sizeof (ino)) |
1061 | ino = (EMACS_INT)(s.st_ino & 0xffffffff); | |
1062 | else | |
1063 | ino = s.st_ino; | |
1064 | if (!FIXNUM_OVERFLOW_P (ino) | |
1065 | && (sizeof (s.st_ino) <= sizeof (ino) || (s.st_ino & ~INTMASK) == 0)) | |
1066 | /* Keep the most common cases as integers. */ | |
1067 | values[10] = make_number (ino); | |
1068 | else if (sizeof (s.st_ino) <= sizeof (ino) | |
1069 | || ((s.st_ino >> 16) & ~INTMASK) == 0) | |
4c637faa RS |
1070 | /* To allow inode numbers larger than VALBITS, separate the bottom |
1071 | 16 bits. */ | |
e058f331 EZ |
1072 | values[10] = Fcons (make_number ((EMACS_INT)(s.st_ino >> 16)), |
1073 | make_number ((EMACS_INT)(s.st_ino & 0xffff))); | |
4c637faa | 1074 | else |
e058f331 EZ |
1075 | { |
1076 | /* To allow inode numbers beyond 32 bits, separate into 2 24-bit | |
1077 | high parts and a 16-bit bottom part. */ | |
1078 | EMACS_INT high_ino = s.st_ino >> 32; | |
1079 | EMACS_INT low_ino = s.st_ino & 0xffffffff; | |
1080 | ||
1081 | values[10] = Fcons (make_number (high_ino >> 8), | |
1082 | Fcons (make_number (((high_ino & 0xff) << 16) | |
1083 | + (low_ino >> 16)), | |
1084 | make_number (low_ino & 0xffff))); | |
1085 | } | |
68c45bf0 | 1086 | |
7412d429 EZ |
1087 | /* Likewise for device, but don't let it become negative. We used |
1088 | to use FIXNUM_OVERFLOW_P here, but that won't catch large | |
1089 | positive numbers such as 0xFFEEDDCC. */ | |
1090 | if ((EMACS_INT)s.st_dev < 0 | |
1091 | || (EMACS_INT)s.st_dev > MOST_POSITIVE_FIXNUM) | |
68c45bf0 PE |
1092 | values[11] = Fcons (make_number (s.st_dev >> 16), |
1093 | make_number (s.st_dev & 0xffff)); | |
1094 | else | |
1095 | values[11] = make_number (s.st_dev); | |
1096 | ||
14d55bce RS |
1097 | return Flist (sizeof(values) / sizeof(values[0]), values); |
1098 | } | |
4424b255 GV |
1099 | |
1100 | DEFUN ("file-attributes-lessp", Ffile_attributes_lessp, Sfile_attributes_lessp, 2, 2, 0, | |
335c5470 PJ |
1101 | doc: /* Return t if first arg file attributes list is less than second. |
1102 | Comparison is in lexicographic order and case is significant. */) | |
1103 | (f1, f2) | |
4424b255 GV |
1104 | Lisp_Object f1, f2; |
1105 | { | |
1106 | return Fstring_lessp (Fcar (f1), Fcar (f2)); | |
1107 | } | |
14d55bce | 1108 | \f |
dfcf069d | 1109 | void |
14d55bce RS |
1110 | syms_of_dired () |
1111 | { | |
32f4334d | 1112 | Qdirectory_files = intern ("directory-files"); |
4424b255 | 1113 | Qdirectory_files_and_attributes = intern ("directory-files-and-attributes"); |
32f4334d RS |
1114 | Qfile_name_completion = intern ("file-name-completion"); |
1115 | Qfile_name_all_completions = intern ("file-name-all-completions"); | |
434e6714 | 1116 | Qfile_attributes = intern ("file-attributes"); |
4424b255 | 1117 | Qfile_attributes_lessp = intern ("file-attributes-lessp"); |
01bb4018 | 1118 | Qdefault_directory = intern ("default-directory"); |
32f4334d | 1119 | |
a2d3836c | 1120 | staticpro (&Qdirectory_files); |
4424b255 | 1121 | staticpro (&Qdirectory_files_and_attributes); |
a2d3836c EN |
1122 | staticpro (&Qfile_name_completion); |
1123 | staticpro (&Qfile_name_all_completions); | |
1124 | staticpro (&Qfile_attributes); | |
4424b255 | 1125 | staticpro (&Qfile_attributes_lessp); |
01bb4018 | 1126 | staticpro (&Qdefault_directory); |
a2d3836c | 1127 | |
14d55bce | 1128 | defsubr (&Sdirectory_files); |
4424b255 | 1129 | defsubr (&Sdirectory_files_and_attributes); |
14d55bce RS |
1130 | defsubr (&Sfile_name_completion); |
1131 | #ifdef VMS | |
1132 | defsubr (&Sfile_name_all_versions); | |
3ed991aa | 1133 | defsubr (&Sfile_version_limit); |
14d55bce RS |
1134 | #endif /* VMS */ |
1135 | defsubr (&Sfile_name_all_completions); | |
1136 | defsubr (&Sfile_attributes); | |
4424b255 | 1137 | defsubr (&Sfile_attributes_lessp); |
14d55bce | 1138 | |
14d55bce | 1139 | DEFVAR_LISP ("completion-ignored-extensions", &Vcompletion_ignored_extensions, |
407a52c4 LT |
1140 | doc: /* Completion ignores file names ending in any string in this list. |
1141 | It does not ignore them if all possible completions end in one of | |
1142 | these strings or when displaying a list of completions. | |
1143 | It ignores directory names if they match any string in this list which | |
1144 | ends in a slash. */); | |
14d55bce RS |
1145 | Vcompletion_ignored_extensions = Qnil; |
1146 | } | |
6b61353c KH |
1147 | |
1148 | /* arch-tag: 1ac8deca-4d8f-4d41-ade9-089154d98c03 | |
1149 | (do not change this comment) */ |