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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 | ||
7 | GNU Emacs is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
684d6f5b | 9 | the Free Software Foundation; either version 3, or (at your option) |
14d55bce RS |
10 | any later version. |
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 | |
18 | along with GNU Emacs; see the file COPYING. If not, write to | |
4fc5845f LK |
19 | the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
20 | Boston, MA 02110-1301, USA. */ | |
14d55bce RS |
21 | |
22 | ||
3964b9a7 RS |
23 | #include <config.h> |
24 | ||
14d55bce RS |
25 | #include <stdio.h> |
26 | #include <sys/types.h> | |
27 | #include <sys/stat.h> | |
28 | ||
5b9c0a1d | 29 | #ifdef HAVE_PWD_H |
6b61353c | 30 | #include <pwd.h> |
5b9c0a1d TTN |
31 | #endif |
32 | #ifndef VMS | |
6b61353c KH |
33 | #include <grp.h> |
34 | #endif | |
35 | ||
7cc9f69f | 36 | #include <errno.h> |
68c45bf0 | 37 | |
3ed991aa RS |
38 | #ifdef VMS |
39 | #include <string.h> | |
40 | #include <rms.h> | |
41 | #include <rmsdef.h> | |
42 | #endif | |
43 | ||
dfcf069d AS |
44 | #ifdef HAVE_UNISTD_H |
45 | #include <unistd.h> | |
46 | #endif | |
47 | ||
d6717cdb JB |
48 | /* The d_nameln member of a struct dirent includes the '\0' character |
49 | on some systems, but not on others. What's worse, you can't tell | |
50 | at compile-time which one it will be, since it really depends on | |
51 | the sort of system providing the filesystem you're reading from, | |
52 | not the system you are running on. Paul Eggert | |
53 | <eggert@bi.twinsun.com> says this occurs when Emacs is running on a | |
54 | SunOS 4.1.2 host, reading a directory that is remote-mounted from a | |
55 | Solaris 2.1 host and is in a native Solaris 2.1 filesystem. | |
56 | ||
57 | Since applying strlen to the name always works, we'll just do that. */ | |
58 | #define NAMLEN(p) strlen (p->d_name) | |
59 | ||
14d55bce RS |
60 | #ifdef SYSV_SYSTEM_DIR |
61 | ||
62 | #include <dirent.h> | |
63 | #define DIRENTRY struct dirent | |
14d55bce | 64 | |
128ecc89 | 65 | #else /* not SYSV_SYSTEM_DIR */ |
14d55bce RS |
66 | |
67 | #ifdef NONSYSTEM_DIR_LIBRARY | |
68 | #include "ndir.h" | |
69 | #else /* not NONSYSTEM_DIR_LIBRARY */ | |
128ecc89 RS |
70 | #ifdef MSDOS |
71 | #include <dirent.h> | |
72 | #else | |
14d55bce | 73 | #include <sys/dir.h> |
128ecc89 | 74 | #endif |
14d55bce RS |
75 | #endif /* not NONSYSTEM_DIR_LIBRARY */ |
76 | ||
851cab13 DL |
77 | #include <sys/stat.h> |
78 | ||
128ecc89 | 79 | #ifndef MSDOS |
14d55bce | 80 | #define DIRENTRY struct direct |
14d55bce RS |
81 | |
82 | extern DIR *opendir (); | |
83 | extern struct direct *readdir (); | |
84 | ||
128ecc89 RS |
85 | #endif /* not MSDOS */ |
86 | #endif /* not SYSV_SYSTEM_DIR */ | |
87 | ||
8f7f8c65 EZ |
88 | /* Some versions of Cygwin don't have d_ino in `struct dirent'. */ |
89 | #if defined(MSDOS) || defined(__CYGWIN__) | |
128ecc89 RS |
90 | #define DIRENTRY_NONEMPTY(p) ((p)->d_name[0] != 0) |
91 | #else | |
92 | #define DIRENTRY_NONEMPTY(p) ((p)->d_ino) | |
14d55bce RS |
93 | #endif |
94 | ||
14d55bce | 95 | #include "lisp.h" |
fa8459a3 | 96 | #include "systime.h" |
14d55bce RS |
97 | #include "buffer.h" |
98 | #include "commands.h" | |
d2f6dae8 | 99 | #include "character.h" |
bd33479f KH |
100 | #include "charset.h" |
101 | #include "coding.h" | |
14d55bce | 102 | #include "regex.h" |
8c8a7c58 | 103 | #include "blockinput.h" |
14d55bce | 104 | |
e50c66d3 KH |
105 | /* Returns a search buffer, with a fastmap allocated and ready to go. */ |
106 | extern struct re_pattern_buffer *compile_pattern (); | |
c7e466e1 | 107 | |
851cab13 DL |
108 | /* From filemode.c. Can't go in Lisp.h because of `stat'. */ |
109 | extern void filemodestring P_ ((struct stat *, char *)); | |
110 | ||
14d55bce RS |
111 | /* if system does not have symbolic links, it does not have lstat. |
112 | In that case, use ordinary stat instead. */ | |
113 | ||
114 | #ifndef S_IFLNK | |
115 | #define lstat stat | |
116 | #endif | |
117 | ||
97e98a56 | 118 | extern int completion_ignore_case; |
ecd3f8b2 | 119 | extern Lisp_Object Qcompletion_ignore_case; |
f676868d | 120 | extern Lisp_Object Vcompletion_regexp_list; |
ccbcf979 | 121 | |
14d55bce | 122 | Lisp_Object Vcompletion_ignored_extensions; |
32f4334d | 123 | Lisp_Object Qdirectory_files; |
4424b255 | 124 | Lisp_Object Qdirectory_files_and_attributes; |
32f4334d RS |
125 | Lisp_Object Qfile_name_completion; |
126 | Lisp_Object Qfile_name_all_completions; | |
434e6714 | 127 | Lisp_Object Qfile_attributes; |
4424b255 | 128 | Lisp_Object Qfile_attributes_lessp; |
b3f04ced RS |
129 | |
130 | static int scmp P_ ((unsigned char *, unsigned char *, int)); | |
14d55bce | 131 | \f |
2488aba5 AI |
132 | |
133 | Lisp_Object | |
134 | directory_files_internal_unwind (dh) | |
135 | Lisp_Object dh; | |
136 | { | |
9d291bdf | 137 | DIR *d = (DIR *) XSAVE_VALUE (dh)->pointer; |
d15b573e | 138 | BLOCK_INPUT; |
2488aba5 | 139 | closedir (d); |
d15b573e | 140 | UNBLOCK_INPUT; |
2488aba5 AI |
141 | return Qnil; |
142 | } | |
143 | ||
177c0ea7 | 144 | /* Function shared by Fdirectory_files and Fdirectory_files_and_attributes. |
4424b255 | 145 | When ATTRS is zero, return a list of directory filenames; when |
6b61353c KH |
146 | non-zero, return a list of directory filenames and their attributes. |
147 | In the latter case, ID_FORMAT is passed to Ffile_attributes. */ | |
f69f9da1 | 148 | |
4424b255 | 149 | Lisp_Object |
6b61353c | 150 | directory_files_internal (directory, full, match, nosort, attrs, id_format) |
23bd240f | 151 | Lisp_Object directory, full, match, nosort; |
4424b255 | 152 | int attrs; |
6b61353c | 153 | Lisp_Object id_format; |
14d55bce RS |
154 | { |
155 | DIR *d; | |
388ac098 GM |
156 | int directory_nbytes; |
157 | Lisp_Object list, dirfilename, encoded_directory; | |
6bbd7a29 | 158 | struct re_pattern_buffer *bufp = NULL; |
96d64004 | 159 | int needsep = 0; |
aed13378 | 160 | int count = SPECPDL_INDEX (); |
388ac098 | 161 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5; |
8e42f043 | 162 | DIRENTRY *dp; |
32f4334d | 163 | |
96d64004 | 164 | /* Because of file name handlers, these functions might call |
6155fae1 | 165 | Ffuncall, and cause a GC. */ |
388ac098 GM |
166 | list = encoded_directory = dirfilename = Qnil; |
167 | GCPRO5 (match, directory, list, dirfilename, encoded_directory); | |
96d64004 | 168 | dirfilename = Fdirectory_file_name (directory); |
6155fae1 | 169 | |
265a9e55 | 170 | if (!NILP (match)) |
14d55bce | 171 | { |
b7826503 | 172 | CHECK_STRING (match); |
ebb9e16f JB |
173 | |
174 | /* MATCH might be a flawed regular expression. Rather than | |
8e6208c5 | 175 | catching and signaling our own errors, we just call |
ebb9e16f | 176 | compile_pattern to do the work for us. */ |
c872c6b2 RS |
177 | /* Pass 1 for the MULTIBYTE arg |
178 | because we do make multibyte strings if the contents warrant. */ | |
14d55bce | 179 | #ifdef VMS |
e50c66d3 | 180 | bufp = compile_pattern (match, 0, |
3e937712 | 181 | buffer_defaults.downcase_table, 0, 1); |
1a9fbabe EZ |
182 | #else /* !VMS */ |
183 | # ifdef WINDOWSNT | |
184 | /* Windows users want case-insensitive wildcards. */ | |
185 | bufp = compile_pattern (match, 0, | |
186 | buffer_defaults.case_canon_table, 0, 1); | |
187 | # else /* !WINDOWSNT */ | |
3e937712 | 188 | bufp = compile_pattern (match, 0, Qnil, 0, 1); |
1a9fbabe EZ |
189 | # endif /* !WINDOWSNT */ |
190 | #endif /* !VMS */ | |
14d55bce RS |
191 | } |
192 | ||
b3edfc9b | 193 | /* Note: ENCODE_FILE and DECODE_FILE can GC because they can run |
388ac098 GM |
194 | run_pre_post_conversion_on_str which calls Lisp directly and |
195 | indirectly. */ | |
6c8b4f07 SM |
196 | if (STRING_MULTIBYTE (dirfilename)) |
197 | dirfilename = ENCODE_FILE (dirfilename); | |
198 | encoded_directory = (STRING_MULTIBYTE (directory) | |
199 | ? ENCODE_FILE (directory) : directory); | |
24c2a54f | 200 | |
e50c66d3 | 201 | /* Now *bufp is the compiled form of MATCH; don't call anything |
6155fae1 JB |
202 | which might compile a new regexp until we're done with the loop! */ |
203 | ||
d15b573e | 204 | BLOCK_INPUT; |
d5db4077 | 205 | d = opendir (SDATA (dirfilename)); |
d15b573e | 206 | UNBLOCK_INPUT; |
388ac098 | 207 | if (d == NULL) |
23bd240f | 208 | report_file_error ("Opening directory", Fcons (directory, Qnil)); |
14d55bce | 209 | |
2488aba5 AI |
210 | /* Unfortunately, we can now invoke expand-file-name and |
211 | file-attributes on filenames, both of which can throw, so we must | |
212 | do a proper unwind-protect. */ | |
213 | record_unwind_protect (directory_files_internal_unwind, | |
9d291bdf | 214 | make_save_value (d, 0)); |
2488aba5 | 215 | |
d5db4077 | 216 | directory_nbytes = SBYTES (directory); |
c81a9bdc | 217 | re_match_object = Qt; |
14d55bce | 218 | |
96d64004 AS |
219 | /* Decide whether we need to add a directory separator. */ |
220 | #ifndef VMS | |
388ac098 | 221 | if (directory_nbytes == 0 |
d5db4077 | 222 | || !IS_ANY_SEP (SREF (directory, directory_nbytes - 1))) |
96d64004 | 223 | needsep = 1; |
e540cbed | 224 | #endif /* not VMS */ |
96d64004 | 225 | |
8e42f043 | 226 | /* Loop reading blocks until EOF or error. */ |
f69f9da1 | 227 | for (;;) |
14d55bce | 228 | { |
f69f9da1 GM |
229 | errno = 0; |
230 | dp = readdir (d); | |
231 | ||
9d291bdf | 232 | if (dp == NULL && (0 |
f69f9da1 | 233 | #ifdef EAGAIN |
9d291bdf SM |
234 | || errno == EAGAIN |
235 | #endif | |
236 | #ifdef EINTR | |
237 | || errno == EINTR | |
f69f9da1 | 238 | #endif |
9d291bdf SM |
239 | )) |
240 | { QUIT; continue; } | |
177c0ea7 | 241 | |
f69f9da1 GM |
242 | if (dp == NULL) |
243 | break; | |
244 | ||
128ecc89 | 245 | if (DIRENTRY_NONEMPTY (dp)) |
14d55bce | 246 | { |
e23f810c | 247 | int len; |
2488aba5 | 248 | int wanted = 0; |
388ac098 GM |
249 | Lisp_Object name, finalname; |
250 | struct gcpro gcpro1, gcpro2; | |
e23f810c KH |
251 | |
252 | len = NAMLEN (dp); | |
9ad4f3e5 | 253 | name = finalname = make_unibyte_string (dp->d_name, len); |
388ac098 | 254 | GCPRO2 (finalname, name); |
177c0ea7 | 255 | |
6c8b4f07 | 256 | /* Note: DECODE_FILE can GC; it should protect its argument, |
388ac098 GM |
257 | though. */ |
258 | name = DECODE_FILE (name); | |
d5db4077 | 259 | len = SBYTES (name); |
e23f810c | 260 | |
2488aba5 AI |
261 | /* Now that we have unwind_protect in place, we might as well |
262 | allow matching to be interrupted. */ | |
263 | immediate_quit = 1; | |
264 | QUIT; | |
265 | ||
265a9e55 | 266 | if (NILP (match) |
d5db4077 | 267 | || (0 <= re_search (bufp, SDATA (name), len, 0, len, 0))) |
388ac098 | 268 | wanted = 1; |
2488aba5 AI |
269 | |
270 | immediate_quit = 0; | |
271 | ||
272 | if (wanted) | |
14d55bce | 273 | { |
265a9e55 | 274 | if (!NILP (full)) |
14d55bce | 275 | { |
e23f810c | 276 | Lisp_Object fullname; |
388ac098 GM |
277 | int nbytes = len + directory_nbytes + needsep; |
278 | int nchars; | |
5617588f | 279 | |
388ac098 | 280 | fullname = make_uninit_multibyte_string (nbytes, nbytes); |
d5db4077 | 281 | bcopy (SDATA (directory), SDATA (fullname), |
388ac098 | 282 | directory_nbytes); |
177c0ea7 | 283 | |
5617588f | 284 | if (needsep) |
d549c5db | 285 | SSET (fullname, directory_nbytes, DIRECTORY_SEP); |
177c0ea7 | 286 | |
d5db4077 KR |
287 | bcopy (SDATA (name), |
288 | SDATA (fullname) + directory_nbytes + needsep, | |
388ac098 | 289 | len); |
177c0ea7 | 290 | |
d5db4077 | 291 | nchars = chars_in_text (SDATA (fullname), nbytes); |
388ac098 GM |
292 | |
293 | /* Some bug somewhere. */ | |
294 | if (nchars > nbytes) | |
295 | abort (); | |
177c0ea7 | 296 | |
437fcd47 | 297 | STRING_SET_CHARS (fullname, nchars); |
388ac098 | 298 | if (nchars == nbytes) |
d5db4077 | 299 | STRING_SET_UNIBYTE (fullname); |
177c0ea7 | 300 | |
4424b255 GV |
301 | finalname = fullname; |
302 | } | |
aab9c564 KH |
303 | else |
304 | finalname = name; | |
4424b255 GV |
305 | |
306 | if (attrs) | |
307 | { | |
308 | /* Construct an expanded filename for the directory entry. | |
309 | Use the decoded names for input to Ffile_attributes. */ | |
388ac098 GM |
310 | Lisp_Object decoded_fullname, fileattrs; |
311 | struct gcpro gcpro1, gcpro2; | |
312 | ||
313 | decoded_fullname = fileattrs = Qnil; | |
314 | GCPRO2 (decoded_fullname, fileattrs); | |
4424b255 | 315 | |
388ac098 | 316 | /* Both Fexpand_file_name and Ffile_attributes can GC. */ |
4424b255 | 317 | decoded_fullname = Fexpand_file_name (name, directory); |
6b61353c | 318 | fileattrs = Ffile_attributes (decoded_fullname, id_format); |
4424b255 GV |
319 | |
320 | list = Fcons (Fcons (finalname, fileattrs), list); | |
388ac098 | 321 | UNGCPRO; |
4424b255 GV |
322 | } |
323 | else | |
388ac098 | 324 | list = Fcons (finalname, list); |
14d55bce | 325 | } |
388ac098 GM |
326 | |
327 | UNGCPRO; | |
14d55bce RS |
328 | } |
329 | } | |
2488aba5 | 330 | |
d15b573e | 331 | BLOCK_INPUT; |
14d55bce | 332 | closedir (d); |
d15b573e | 333 | UNBLOCK_INPUT; |
2488aba5 AI |
334 | |
335 | /* Discard the unwind protect. */ | |
336 | specpdl_ptr = specpdl + count; | |
337 | ||
388ac098 GM |
338 | if (NILP (nosort)) |
339 | list = Fsort (Fnreverse (list), | |
340 | attrs ? Qfile_attributes_lessp : Qstring_lessp); | |
177c0ea7 | 341 | |
388ac098 | 342 | RETURN_UNGCPRO (list); |
14d55bce | 343 | } |
4424b255 GV |
344 | |
345 | ||
346 | DEFUN ("directory-files", Fdirectory_files, Sdirectory_files, 1, 4, 0, | |
335c5470 PJ |
347 | doc: /* Return a list of names of files in DIRECTORY. |
348 | There are three optional arguments: | |
349 | If FULL is non-nil, return absolute file names. Otherwise return names | |
350 | that are relative to the specified directory. | |
351 | If MATCH is non-nil, mention only file names that match the regexp MATCH. | |
352 | If NOSORT is non-nil, the list is not sorted--its order is unpredictable. | |
353 | NOSORT is useful if you plan to sort the result yourself. */) | |
354 | (directory, full, match, nosort) | |
4424b255 GV |
355 | Lisp_Object directory, full, match, nosort; |
356 | { | |
357 | Lisp_Object handler; | |
4ece81a6 | 358 | directory = Fexpand_file_name (directory, Qnil); |
4424b255 GV |
359 | |
360 | /* If the file name has special constructs in it, | |
361 | call the corresponding file handler. */ | |
362 | handler = Ffind_file_name_handler (directory, Qdirectory_files); | |
363 | if (!NILP (handler)) | |
6b61353c KH |
364 | return call5 (handler, Qdirectory_files, directory, |
365 | full, match, nosort); | |
4424b255 | 366 | |
6b61353c | 367 | return directory_files_internal (directory, full, match, nosort, 0, Qnil); |
4424b255 GV |
368 | } |
369 | ||
335c5470 | 370 | DEFUN ("directory-files-and-attributes", Fdirectory_files_and_attributes, |
6b61353c | 371 | Sdirectory_files_and_attributes, 1, 5, 0, |
335c5470 | 372 | doc: /* Return a list of names of files and their attributes in DIRECTORY. |
6b61353c | 373 | There are four optional arguments: |
335c5470 PJ |
374 | If FULL is non-nil, return absolute file names. Otherwise return names |
375 | that are relative to the specified directory. | |
376 | If MATCH is non-nil, mention only file names that match the regexp MATCH. | |
377 | If NOSORT is non-nil, the list is not sorted--its order is unpredictable. | |
6b61353c KH |
378 | NOSORT is useful if you plan to sort the result yourself. |
379 | ID-FORMAT specifies the preferred format of attributes uid and gid, see | |
380 | `file-attributes' for further documentation. */) | |
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 AS |
457 | static int file_name_completion_stat (); |
458 | ||
14d55bce | 459 | Lisp_Object |
abfb1932 | 460 | file_name_completion (file, dirname, all_flag, ver_flag, predicate) |
14d55bce RS |
461 | Lisp_Object file, dirname; |
462 | int all_flag, ver_flag; | |
abfb1932 | 463 | Lisp_Object predicate; |
14d55bce RS |
464 | { |
465 | DIR *d; | |
6bbd7a29 | 466 | int bestmatchsize = 0, skip; |
14d55bce | 467 | register int compare, matchsize; |
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; | |
477 | int passcount; | |
aed13378 | 478 | int count = SPECPDL_INDEX (); |
24c2a54f | 479 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5; |
3fcc88cc | 480 | |
6bbd7a29 GM |
481 | elt = Qnil; |
482 | ||
14d55bce RS |
483 | #ifdef VMS |
484 | extern DIRENTRY * readdirver (); | |
485 | ||
486 | DIRENTRY *((* readfunc) ()); | |
487 | ||
488 | /* Filename completion on VMS ignores case, since VMS filesys does. */ | |
489 | specbind (Qcompletion_ignore_case, Qt); | |
490 | ||
491 | readfunc = readdir; | |
492 | if (ver_flag) | |
493 | readfunc = readdirver; | |
494 | file = Fupcase (file); | |
495 | #else /* not VMS */ | |
b7826503 | 496 | CHECK_STRING (file); |
14d55bce RS |
497 | #endif /* not VMS */ |
498 | ||
128ecc89 RS |
499 | #ifdef FILE_SYSTEM_CASE |
500 | file = FILE_SYSTEM_CASE (file); | |
501 | #endif | |
14d55bce | 502 | bestmatch = Qnil; |
24c2a54f RS |
503 | encoded_file = encoded_dir = Qnil; |
504 | GCPRO5 (file, dirname, bestmatch, encoded_file, encoded_dir); | |
3fcc88cc | 505 | dirname = Fexpand_file_name (dirname, Qnil); |
14d55bce | 506 | |
24c2a54f RS |
507 | /* Do completion on the encoded file name |
508 | because the other names in the directory are (we presume) | |
509 | encoded likewise. We decode the completed string at the end. */ | |
2a54a229 SM |
510 | /* Actually, this is not quite true any more: we do most of the completion |
511 | work with decoded file names, but we still do some filtering based | |
512 | on the encoded file name. */ | |
6c8b4f07 | 513 | encoded_file = STRING_MULTIBYTE (file) ? ENCODE_FILE (file) : file; |
24c2a54f RS |
514 | |
515 | encoded_dir = ENCODE_FILE (dirname); | |
516 | ||
14d55bce RS |
517 | /* With passcount = 0, ignore files that end in an ignored extension. |
518 | If nothing found then try again with passcount = 1, don't ignore them. | |
519 | If looking for all completions, start with passcount = 1, | |
520 | so always take even the ignored ones. | |
521 | ||
522 | ** It would not actually be helpful to the user to ignore any possible | |
523 | completions when making a list of them.** */ | |
524 | ||
265a9e55 | 525 | for (passcount = !!all_flag; NILP (bestmatch) && passcount < 2; passcount++) |
14d55bce | 526 | { |
c3a3229c RS |
527 | int inner_count = SPECPDL_INDEX (); |
528 | ||
d15b573e | 529 | BLOCK_INPUT; |
d5db4077 | 530 | d = opendir (SDATA (Fdirectory_file_name (encoded_dir))); |
d15b573e | 531 | UNBLOCK_INPUT; |
24c2a54f | 532 | if (!d) |
14d55bce RS |
533 | report_file_error ("Opening directory", Fcons (dirname, Qnil)); |
534 | ||
62e3881f | 535 | record_unwind_protect (directory_files_internal_unwind, |
9d291bdf | 536 | make_save_value (d, 0)); |
62e3881f | 537 | |
14d55bce RS |
538 | /* Loop reading blocks */ |
539 | /* (att3b compiler bug requires do a null comparison this way) */ | |
540 | while (1) | |
541 | { | |
542 | DIRENTRY *dp; | |
543 | int len; | |
544 | ||
545 | #ifdef VMS | |
546 | dp = (*readfunc) (d); | |
547 | #else | |
9d291bdf | 548 | errno = 0; |
14d55bce | 549 | dp = readdir (d); |
9d291bdf SM |
550 | if (dp == NULL && (0 |
551 | # ifdef EAGAIN | |
552 | || errno == EAGAIN | |
553 | # endif | |
554 | # ifdef EINTR | |
555 | || errno == EINTR | |
556 | # endif | |
557 | )) | |
558 | { QUIT; continue; } | |
14d55bce | 559 | #endif |
9d291bdf | 560 | |
14d55bce RS |
561 | if (!dp) break; |
562 | ||
563 | len = NAMLEN (dp); | |
564 | ||
c3a3229c | 565 | QUIT; |
128ecc89 | 566 | if (! DIRENTRY_NONEMPTY (dp) |
d5db4077 KR |
567 | || len < SCHARS (encoded_file) |
568 | || 0 <= scmp (dp->d_name, SDATA (encoded_file), | |
569 | SCHARS (encoded_file))) | |
14d55bce RS |
570 | continue; |
571 | ||
24c2a54f | 572 | if (file_name_completion_stat (encoded_dir, dp, &st) < 0) |
14d55bce RS |
573 | continue; |
574 | ||
575 | directoryp = ((st.st_mode & S_IFMT) == S_IFDIR); | |
576 | tem = Qnil; | |
ad456ad4 RS |
577 | if (directoryp) |
578 | { | |
579 | #ifndef TRIVIAL_DIRECTORY_ENTRY | |
580 | #define TRIVIAL_DIRECTORY_ENTRY(n) (!strcmp (n, ".") || !strcmp (n, "..")) | |
581 | #endif | |
abfb1932 RS |
582 | /* "." and ".." are never interesting as completions, and are |
583 | actually in the way in a directory with only one file. */ | |
ad456ad4 RS |
584 | if (!passcount && TRIVIAL_DIRECTORY_ENTRY (dp->d_name)) |
585 | continue; | |
d5db4077 | 586 | if (!passcount && len > SCHARS (encoded_file)) |
d013f29b EZ |
587 | /* Ignore directories if they match an element of |
588 | completion-ignored-extensions which ends in a slash. */ | |
589 | for (tem = Vcompletion_ignored_extensions; | |
590 | CONSP (tem); tem = XCDR (tem)) | |
591 | { | |
592 | int elt_len; | |
2a54a229 | 593 | unsigned char *p1; |
d013f29b EZ |
594 | |
595 | elt = XCAR (tem); | |
596 | if (!STRINGP (elt)) | |
597 | continue; | |
a74aaa9d EZ |
598 | /* Need to encode ELT, since scmp compares unibyte |
599 | strings only. */ | |
600 | elt = ENCODE_FILE (elt); | |
d5db4077 | 601 | elt_len = SCHARS (elt) - 1; /* -1 for trailing / */ |
7a8d465a | 602 | if (elt_len <= 0) |
d013f29b | 603 | continue; |
d5db4077 | 604 | p1 = SDATA (elt); |
d013f29b EZ |
605 | if (p1[elt_len] != '/') |
606 | continue; | |
607 | skip = len - elt_len; | |
608 | if (skip < 0) | |
609 | continue; | |
610 | ||
611 | if (0 <= scmp (dp->d_name + skip, p1, elt_len)) | |
612 | continue; | |
613 | break; | |
614 | } | |
ad456ad4 RS |
615 | } |
616 | else | |
14d55bce RS |
617 | { |
618 | /* Compare extensions-to-be-ignored against end of this file name */ | |
619 | /* if name is not an exact match against specified string */ | |
d5db4077 | 620 | if (!passcount && len > SCHARS (encoded_file)) |
14d55bce RS |
621 | /* and exit this for loop if a match is found */ |
622 | for (tem = Vcompletion_ignored_extensions; | |
70949dac | 623 | CONSP (tem); tem = XCDR (tem)) |
14d55bce | 624 | { |
70949dac | 625 | elt = XCAR (tem); |
88cf1852 | 626 | if (!STRINGP (elt)) continue; |
a74aaa9d EZ |
627 | /* Need to encode ELT, since scmp compares unibyte |
628 | strings only. */ | |
629 | elt = ENCODE_FILE (elt); | |
d5db4077 | 630 | skip = len - SCHARS (elt); |
14d55bce RS |
631 | if (skip < 0) continue; |
632 | ||
633 | if (0 <= scmp (dp->d_name + skip, | |
d5db4077 KR |
634 | SDATA (elt), |
635 | SCHARS (elt))) | |
14d55bce RS |
636 | continue; |
637 | break; | |
638 | } | |
639 | } | |
640 | ||
f676868d KH |
641 | /* If an ignored-extensions match was found, |
642 | don't process this name as a completion. */ | |
643 | if (!passcount && CONSP (tem)) | |
644 | continue; | |
645 | ||
2a54a229 SM |
646 | /* FIXME: If we move this `decode' earlier we can eliminate |
647 | the repeated ENCODE_FILE on Vcompletion_ignored_extensions. */ | |
9c691c00 | 648 | name = make_unibyte_string (dp->d_name, len); |
2a54a229 | 649 | name = DECODE_FILE (name); |
9c691c00 | 650 | |
f676868d | 651 | if (!passcount) |
14d55bce | 652 | { |
f676868d KH |
653 | Lisp_Object regexps; |
654 | Lisp_Object zero; | |
617b3bfe | 655 | XSETFASTINT (zero, 0); |
f676868d KH |
656 | |
657 | /* Ignore this element if it fails to match all the regexps. */ | |
658 | for (regexps = Vcompletion_regexp_list; CONSP (regexps); | |
70949dac | 659 | regexps = XCDR (regexps)) |
2a54a229 SM |
660 | if (fast_string_match (XCAR (regexps), name) < 0) |
661 | break; | |
f676868d KH |
662 | if (CONSP (regexps)) |
663 | continue; | |
664 | } | |
14d55bce | 665 | |
abfb1932 RS |
666 | /* This is a possible completion */ |
667 | if (directoryp) | |
668 | { | |
669 | /* This completion is a directory; make it end with '/' */ | |
2a54a229 | 670 | name = Ffile_name_as_directory (name); |
abfb1932 | 671 | } |
abfb1932 RS |
672 | |
673 | /* Test the predicate, if any. */ | |
674 | ||
675 | if (!NILP (predicate)) | |
676 | { | |
677 | Lisp_Object decoded; | |
c4c52bb7 | 678 | Lisp_Object val; |
2a54a229 | 679 | struct gcpro gcpro1; |
c4c52bb7 | 680 | |
2a54a229 SM |
681 | GCPRO1 (name); |
682 | decoded = Fexpand_file_name (name, dirname); | |
c4c52bb7 KS |
683 | val = call1 (predicate, decoded); |
684 | UNGCPRO; | |
685 | ||
686 | if (NILP (val)) | |
abfb1932 RS |
687 | continue; |
688 | } | |
689 | ||
690 | /* Suitably record this match. */ | |
14d55bce | 691 | |
f676868d KH |
692 | matchcount++; |
693 | ||
abfb1932 | 694 | if (all_flag) |
2a54a229 | 695 | bestmatch = Fcons (name, bestmatch); |
abfb1932 RS |
696 | else if (NILP (bestmatch)) |
697 | { | |
698 | bestmatch = name; | |
699 | bestmatchsize = SCHARS (name); | |
f676868d KH |
700 | } |
701 | else | |
702 | { | |
2a54a229 SM |
703 | Lisp_Object zero = make_number (0); |
704 | /* FIXME: This is a copy of the code in Ftry_completion. */ | |
705 | compare = min (bestmatchsize, SCHARS (name)); | |
706 | tem = Fcompare_strings (bestmatch, zero, | |
707 | make_number (compare), | |
708 | name, zero, | |
709 | make_number (compare), | |
710 | completion_ignore_case ? Qt : Qnil); | |
711 | if (EQ (tem, Qt)) | |
f676868d | 712 | matchsize = compare; |
2a54a229 SM |
713 | else if (XINT (tem) < 0) |
714 | matchsize = - XINT (tem) - 1; | |
715 | else | |
716 | matchsize = XINT (tem) - 1; | |
717 | ||
f676868d KH |
718 | if (completion_ignore_case) |
719 | { | |
720 | /* If this is an exact match except for case, | |
721 | use it as the best match rather than one that is not | |
722 | an exact match. This way, we get the case pattern | |
723 | of the actual match. */ | |
f5ec5d3d RS |
724 | /* This tests that the current file is an exact match |
725 | but BESTMATCH is not (it is too long). */ | |
2a54a229 | 726 | if ((matchsize == SCHARS (name) |
177c0ea7 | 727 | && matchsize + !!directoryp |
2a54a229 | 728 | < SCHARS (bestmatch)) |
f676868d KH |
729 | || |
730 | /* If there is no exact match ignoring case, | |
731 | prefer a match that does not change the case | |
732 | of the input. */ | |
f5ec5d3d RS |
733 | /* If there is more than one exact match aside from |
734 | case, and one of them is exact including case, | |
735 | prefer that one. */ | |
736 | /* This == checks that, of current file and BESTMATCH, | |
737 | either both or neither are exact. */ | |
2a54a229 | 738 | (((matchsize == SCHARS (name)) |
f676868d | 739 | == |
9c691c00 | 740 | (matchsize + !!directoryp == SCHARS (bestmatch))) |
2a54a229 SM |
741 | && (tem = Fcompare_strings (name, zero, |
742 | make_number (SCHARS (file)), | |
743 | file, zero, | |
744 | Qnil, | |
745 | Qnil), | |
746 | EQ (Qt, tem)) | |
747 | && (tem = Fcompare_strings (bestmatch, zero, | |
748 | make_number (SCHARS (file)), | |
749 | file, zero, | |
750 | Qnil, | |
751 | Qnil), | |
752 | ! EQ (Qt, tem)))) | |
abfb1932 | 753 | bestmatch = name; |
14d55bce | 754 | } |
f676868d | 755 | bestmatchsize = matchsize; |
14d55bce RS |
756 | } |
757 | } | |
c3a3229c RS |
758 | /* This closes the directory. */ |
759 | bestmatch = unbind_to (inner_count, bestmatch); | |
14d55bce RS |
760 | } |
761 | ||
3fcc88cc | 762 | UNGCPRO; |
c3a3229c | 763 | bestmatch = unbind_to (count, bestmatch); |
14d55bce | 764 | |
265a9e55 | 765 | if (all_flag || NILP (bestmatch)) |
2a54a229 SM |
766 | return bestmatch; |
767 | if (matchcount == 1 && bestmatchsize == SCHARS (file)) | |
14d55bce | 768 | return Qt; |
24c2a54f RS |
769 | bestmatch = Fsubstring (bestmatch, make_number (0), |
770 | make_number (bestmatchsize)); | |
24c2a54f | 771 | return bestmatch; |
14d55bce RS |
772 | } |
773 | ||
b3f04ced RS |
774 | /* Compare exactly LEN chars of strings at S1 and S2, |
775 | ignoring case if appropriate. | |
776 | Return -1 if strings match, | |
777 | else number of chars that match at the beginning. */ | |
778 | ||
779 | static int | |
780 | scmp (s1, s2, len) | |
781 | register unsigned char *s1, *s2; | |
782 | int len; | |
783 | { | |
784 | register int l = len; | |
785 | ||
786 | if (completion_ignore_case) | |
787 | { | |
788 | while (l && DOWNCASE (*s1++) == DOWNCASE (*s2++)) | |
789 | l--; | |
790 | } | |
791 | else | |
792 | { | |
793 | while (l && *s1++ == *s2++) | |
794 | l--; | |
795 | } | |
796 | if (l == 0) | |
797 | return -1; | |
798 | else | |
799 | return len - l; | |
800 | } | |
801 | ||
dfcf069d | 802 | static int |
14d55bce RS |
803 | file_name_completion_stat (dirname, dp, st_addr) |
804 | Lisp_Object dirname; | |
805 | DIRENTRY *dp; | |
806 | struct stat *st_addr; | |
807 | { | |
808 | int len = NAMLEN (dp); | |
d5db4077 | 809 | int pos = SCHARS (dirname); |
7e3cf34f | 810 | int value; |
14d55bce RS |
811 | char *fullname = (char *) alloca (len + pos + 2); |
812 | ||
04924ee3 RS |
813 | #ifdef MSDOS |
814 | #if __DJGPP__ > 1 | |
815 | /* Some fields of struct stat are *very* expensive to compute on MS-DOS, | |
816 | but aren't required here. Avoid computing the following fields: | |
817 | st_inode, st_size and st_nlink for directories, and the execute bits | |
818 | in st_mode for non-directory files with non-standard extensions. */ | |
819 | ||
820 | unsigned short save_djstat_flags = _djstat_flags; | |
821 | ||
822 | _djstat_flags = _STAT_INODE | _STAT_EXEC_MAGIC | _STAT_DIRSIZE; | |
823 | #endif /* __DJGPP__ > 1 */ | |
824 | #endif /* MSDOS */ | |
825 | ||
d5db4077 | 826 | bcopy (SDATA (dirname), fullname, pos); |
14d55bce | 827 | #ifndef VMS |
0b39d75d RS |
828 | if (!IS_DIRECTORY_SEP (fullname[pos - 1])) |
829 | fullname[pos++] = DIRECTORY_SEP; | |
14d55bce RS |
830 | #endif |
831 | ||
832 | bcopy (dp->d_name, fullname + pos, len); | |
833 | fullname[pos + len] = 0; | |
834 | ||
a889bd0e | 835 | #ifdef S_IFLNK |
7e3cf34f RS |
836 | /* We want to return success if a link points to a nonexistent file, |
837 | but we want to return the status for what the link points to, | |
838 | in case it is a directory. */ | |
839 | value = lstat (fullname, st_addr); | |
840 | stat (fullname, st_addr); | |
841 | return value; | |
a889bd0e | 842 | #else |
04924ee3 RS |
843 | value = stat (fullname, st_addr); |
844 | #ifdef MSDOS | |
845 | #if __DJGPP__ > 1 | |
846 | _djstat_flags = save_djstat_flags; | |
847 | #endif /* __DJGPP__ > 1 */ | |
848 | #endif /* MSDOS */ | |
849 | return value; | |
850 | #endif /* S_IFLNK */ | |
14d55bce RS |
851 | } |
852 | \f | |
3ed991aa RS |
853 | #ifdef VMS |
854 | ||
855 | DEFUN ("file-name-all-versions", Ffile_name_all_versions, | |
335c5470 PJ |
856 | Sfile_name_all_versions, 2, 2, 0, |
857 | doc: /* Return a list of all versions of file name FILE in directory DIRECTORY. */) | |
858 | (file, directory) | |
23bd240f | 859 | Lisp_Object file, directory; |
3ed991aa | 860 | { |
abfb1932 | 861 | return file_name_completion (file, directory, 1, 1, Qnil); |
3ed991aa RS |
862 | } |
863 | ||
864 | DEFUN ("file-version-limit", Ffile_version_limit, Sfile_version_limit, 1, 1, 0, | |
335c5470 PJ |
865 | doc: /* Return the maximum number of versions allowed for FILE. |
866 | Returns nil if the file cannot be opened or if there is no version limit. */) | |
867 | (filename) | |
3ed991aa RS |
868 | Lisp_Object filename; |
869 | { | |
870 | Lisp_Object retval; | |
871 | struct FAB fab; | |
872 | struct RAB rab; | |
873 | struct XABFHC xabfhc; | |
874 | int status; | |
875 | ||
876 | filename = Fexpand_file_name (filename, Qnil); | |
877 | fab = cc$rms_fab; | |
878 | xabfhc = cc$rms_xabfhc; | |
d5db4077 | 879 | fab.fab$l_fna = SDATA (filename); |
3ed991aa RS |
880 | fab.fab$b_fns = strlen (fab.fab$l_fna); |
881 | fab.fab$l_xab = (char *) &xabfhc; | |
882 | status = sys$open (&fab, 0, 0); | |
883 | if (status != RMS$_NORMAL) /* Probably non-existent file */ | |
884 | return Qnil; | |
885 | sys$close (&fab, 0, 0); | |
886 | if (xabfhc.xab$w_verlimit == 32767) | |
887 | return Qnil; /* No version limit */ | |
888 | else | |
889 | return make_number (xabfhc.xab$w_verlimit); | |
890 | } | |
891 | ||
892 | #endif /* VMS */ | |
893 | \f | |
14d55bce RS |
894 | Lisp_Object |
895 | make_time (time) | |
e5124be7 | 896 | time_t time; |
14d55bce RS |
897 | { |
898 | return Fcons (make_number (time >> 16), | |
899 | Fcons (make_number (time & 0177777), Qnil)); | |
900 | } | |
901 | ||
6b61353c | 902 | DEFUN ("file-attributes", Ffile_attributes, Sfile_attributes, 1, 2, 0, |
335c5470 PJ |
903 | doc: /* Return a list of attributes of file FILENAME. |
904 | Value is nil if specified file cannot be opened. | |
6b61353c KH |
905 | |
906 | ID-FORMAT specifies the preferred format of attributes uid and gid (see | |
907 | below) - valid values are 'string and 'integer. The latter is the default, | |
908 | but we plan to change that, so you should specify a non-nil value for | |
909 | ID-FORMAT if you use the returned uid or gid. | |
910 | ||
911 | Elements of the attribute list are: | |
335c5470 PJ |
912 | 0. t for directory, string (name linked to) for symbolic link, or nil. |
913 | 1. Number of links to file. | |
6b61353c KH |
914 | 2. File uid as a string or an integer. If a string value cannot be |
915 | looked up, the integer value is returned. | |
916 | 3. File gid, likewise. | |
335c5470 PJ |
917 | 4. Last access time, as a list of two integers. |
918 | First integer has high-order 16 bits of time, second has low 16 bits. | |
919 | 5. Last modification time, likewise. | |
920 | 6. Last status change time, likewise. | |
921 | 7. Size in bytes. | |
922 | This is a floating point number if the size is too large for an integer. | |
923 | 8. File modes, as a string of ten letters or dashes as in ls -l. | |
e0f24100 | 924 | 9. t if file's gid would change if file were deleted and recreated. |
335c5470 | 925 | 10. inode number. If inode number is larger than the Emacs integer, |
e058f331 EZ |
926 | but still fits into a 32-bit number, this is a cons cell containing two |
927 | integers: first the high part, then the low 16 bits. If the inode number | |
928 | is wider than 32 bits, this is a cons cell containing three integers: | |
929 | first the high 24 bits, then middle 24 bits, and finally the low 16 bits. | |
335c5470 | 930 | 11. Device number. If it is larger than the Emacs integer, this is |
6b61353c KH |
931 | a cons cell, similar to the inode number. */) |
932 | (filename, id_format) | |
933 | Lisp_Object filename, id_format; | |
14d55bce RS |
934 | { |
935 | Lisp_Object values[12]; | |
24c2a54f | 936 | Lisp_Object encoded; |
14d55bce | 937 | struct stat s; |
6b61353c KH |
938 | struct passwd *pw; |
939 | struct group *gr; | |
0a974c85 | 940 | #if defined (BSD4_2) || defined (BSD4_3) |
b3edfc9b | 941 | Lisp_Object dirname; |
14d55bce | 942 | struct stat sdir; |
b3edfc9b | 943 | #endif |
14d55bce | 944 | char modes[10]; |
32f4334d | 945 | Lisp_Object handler; |
7435aef8 | 946 | struct gcpro gcpro1; |
01388a3d | 947 | EMACS_INT ino; |
14d55bce RS |
948 | |
949 | filename = Fexpand_file_name (filename, Qnil); | |
32f4334d RS |
950 | |
951 | /* If the file name has special constructs in it, | |
952 | call the corresponding file handler. */ | |
a617e913 | 953 | handler = Ffind_file_name_handler (filename, Qfile_attributes); |
32f4334d | 954 | if (!NILP (handler)) |
6b61353c KH |
955 | { /* Only pass the extra arg if it is used to help backward compatibility |
956 | with old file handlers which do not implement the new arg. --Stef */ | |
957 | if (NILP (id_format)) | |
958 | return call2 (handler, Qfile_attributes, filename); | |
959 | else | |
960 | return call3 (handler, Qfile_attributes, filename, id_format); | |
961 | } | |
32f4334d | 962 | |
7435aef8 | 963 | GCPRO1 (filename); |
24c2a54f | 964 | encoded = ENCODE_FILE (filename); |
7435aef8 | 965 | UNGCPRO; |
24c2a54f | 966 | |
d5db4077 | 967 | if (lstat (SDATA (encoded), &s) < 0) |
14d55bce RS |
968 | return Qnil; |
969 | ||
970 | switch (s.st_mode & S_IFMT) | |
971 | { | |
972 | default: | |
973 | values[0] = Qnil; break; | |
974 | case S_IFDIR: | |
975 | values[0] = Qt; break; | |
976 | #ifdef S_IFLNK | |
977 | case S_IFLNK: | |
978 | values[0] = Ffile_symlink_p (filename); break; | |
979 | #endif | |
980 | } | |
981 | values[1] = make_number (s.st_nlink); | |
6b61353c KH |
982 | if (NILP (id_format) || EQ (id_format, Qinteger)) |
983 | { | |
01388a3d EZ |
984 | values[2] = make_fixnum_or_float (s.st_uid); |
985 | values[3] = make_fixnum_or_float (s.st_gid); | |
6b61353c KH |
986 | } |
987 | else | |
988 | { | |
8c8a7c58 | 989 | BLOCK_INPUT; |
01388a3d | 990 | pw = (struct passwd *) getpwuid (s.st_uid); |
8b9ae6b0 | 991 | values[2] = (pw ? build_string (pw->pw_name) |
01388a3d EZ |
992 | : make_fixnum_or_float (s.st_uid)); |
993 | gr = (struct group *) getgrgid (s.st_gid); | |
8b9ae6b0 | 994 | values[3] = (gr ? build_string (gr->gr_name) |
01388a3d | 995 | : make_fixnum_or_float (s.st_gid)); |
8c8a7c58 | 996 | UNBLOCK_INPUT; |
6b61353c | 997 | } |
14d55bce RS |
998 | values[4] = make_time (s.st_atime); |
999 | values[5] = make_time (s.st_mtime); | |
1000 | values[6] = make_time (s.st_ctime); | |
68c45bf0 | 1001 | values[7] = make_number (s.st_size); |
cb1846b4 | 1002 | /* If the size is out of range for an integer, return a float. */ |
60fc6069 | 1003 | if (XINT (values[7]) != s.st_size) |
cb1846b4 | 1004 | values[7] = make_float ((double)s.st_size); |
4bc12672 JR |
1005 | /* If the size is negative, and its type is long, convert it back to |
1006 | positive. */ | |
1007 | if (s.st_size < 0 && sizeof (s.st_size) == sizeof (long)) | |
1008 | values[7] = make_float ((double) ((unsigned long) s.st_size)); | |
1009 | ||
14d55bce RS |
1010 | filemodestring (&s, modes); |
1011 | values[8] = make_string (modes, 10); | |
0a974c85 | 1012 | #if defined (BSD4_2) || defined (BSD4_3) /* file gid will be dir gid */ |
14d55bce | 1013 | dirname = Ffile_name_directory (filename); |
24c2a54f RS |
1014 | if (! NILP (dirname)) |
1015 | encoded = ENCODE_FILE (dirname); | |
d5db4077 | 1016 | if (! NILP (dirname) && stat (SDATA (encoded), &sdir) == 0) |
01388a3d | 1017 | values[9] = (sdir.st_gid != s.st_gid) ? Qt : Qnil; |
14d55bce RS |
1018 | else /* if we can't tell, assume worst */ |
1019 | values[9] = Qt; | |
1020 | #else /* file gid will be egid */ | |
01388a3d | 1021 | values[9] = (s.st_gid != getegid ()) ? Qt : Qnil; |
14d55bce | 1022 | #endif /* BSD4_2 (or BSD4_3) */ |
b55445d6 | 1023 | /* Shut up GCC warnings in FIXNUM_OVERFLOW_P below. */ |
e058f331 EZ |
1024 | if (sizeof (s.st_ino) > sizeof (ino)) |
1025 | ino = (EMACS_INT)(s.st_ino & 0xffffffff); | |
1026 | else | |
1027 | ino = s.st_ino; | |
1028 | if (!FIXNUM_OVERFLOW_P (ino) | |
1029 | && (sizeof (s.st_ino) <= sizeof (ino) || (s.st_ino & ~INTMASK) == 0)) | |
1030 | /* Keep the most common cases as integers. */ | |
1031 | values[10] = make_number (ino); | |
1032 | else if (sizeof (s.st_ino) <= sizeof (ino) | |
1033 | || ((s.st_ino >> 16) & ~INTMASK) == 0) | |
4c637faa RS |
1034 | /* To allow inode numbers larger than VALBITS, separate the bottom |
1035 | 16 bits. */ | |
e058f331 EZ |
1036 | values[10] = Fcons (make_number ((EMACS_INT)(s.st_ino >> 16)), |
1037 | make_number ((EMACS_INT)(s.st_ino & 0xffff))); | |
4c637faa | 1038 | else |
e058f331 EZ |
1039 | { |
1040 | /* To allow inode numbers beyond 32 bits, separate into 2 24-bit | |
1041 | high parts and a 16-bit bottom part. */ | |
1042 | EMACS_INT high_ino = s.st_ino >> 32; | |
1043 | EMACS_INT low_ino = s.st_ino & 0xffffffff; | |
1044 | ||
1045 | values[10] = Fcons (make_number (high_ino >> 8), | |
1046 | Fcons (make_number (((high_ino & 0xff) << 16) | |
1047 | + (low_ino >> 16)), | |
1048 | make_number (low_ino & 0xffff))); | |
1049 | } | |
68c45bf0 PE |
1050 | |
1051 | /* Likewise for device. */ | |
f8edfd76 | 1052 | if (FIXNUM_OVERFLOW_P (s.st_dev)) |
68c45bf0 PE |
1053 | values[11] = Fcons (make_number (s.st_dev >> 16), |
1054 | make_number (s.st_dev & 0xffff)); | |
1055 | else | |
1056 | values[11] = make_number (s.st_dev); | |
1057 | ||
14d55bce RS |
1058 | return Flist (sizeof(values) / sizeof(values[0]), values); |
1059 | } | |
4424b255 GV |
1060 | |
1061 | DEFUN ("file-attributes-lessp", Ffile_attributes_lessp, Sfile_attributes_lessp, 2, 2, 0, | |
335c5470 PJ |
1062 | doc: /* Return t if first arg file attributes list is less than second. |
1063 | Comparison is in lexicographic order and case is significant. */) | |
1064 | (f1, f2) | |
4424b255 GV |
1065 | Lisp_Object f1, f2; |
1066 | { | |
1067 | return Fstring_lessp (Fcar (f1), Fcar (f2)); | |
1068 | } | |
14d55bce | 1069 | \f |
dfcf069d | 1070 | void |
14d55bce RS |
1071 | syms_of_dired () |
1072 | { | |
32f4334d | 1073 | Qdirectory_files = intern ("directory-files"); |
4424b255 | 1074 | Qdirectory_files_and_attributes = intern ("directory-files-and-attributes"); |
32f4334d RS |
1075 | Qfile_name_completion = intern ("file-name-completion"); |
1076 | Qfile_name_all_completions = intern ("file-name-all-completions"); | |
434e6714 | 1077 | Qfile_attributes = intern ("file-attributes"); |
4424b255 | 1078 | Qfile_attributes_lessp = intern ("file-attributes-lessp"); |
32f4334d | 1079 | |
a2d3836c | 1080 | staticpro (&Qdirectory_files); |
4424b255 | 1081 | staticpro (&Qdirectory_files_and_attributes); |
a2d3836c EN |
1082 | staticpro (&Qfile_name_completion); |
1083 | staticpro (&Qfile_name_all_completions); | |
1084 | staticpro (&Qfile_attributes); | |
4424b255 | 1085 | staticpro (&Qfile_attributes_lessp); |
a2d3836c | 1086 | |
14d55bce | 1087 | defsubr (&Sdirectory_files); |
4424b255 | 1088 | defsubr (&Sdirectory_files_and_attributes); |
14d55bce RS |
1089 | defsubr (&Sfile_name_completion); |
1090 | #ifdef VMS | |
1091 | defsubr (&Sfile_name_all_versions); | |
3ed991aa | 1092 | defsubr (&Sfile_version_limit); |
14d55bce RS |
1093 | #endif /* VMS */ |
1094 | defsubr (&Sfile_name_all_completions); | |
1095 | defsubr (&Sfile_attributes); | |
4424b255 | 1096 | defsubr (&Sfile_attributes_lessp); |
14d55bce | 1097 | |
14d55bce | 1098 | DEFVAR_LISP ("completion-ignored-extensions", &Vcompletion_ignored_extensions, |
407a52c4 LT |
1099 | doc: /* Completion ignores file names ending in any string in this list. |
1100 | It does not ignore them if all possible completions end in one of | |
1101 | these strings or when displaying a list of completions. | |
1102 | It ignores directory names if they match any string in this list which | |
1103 | ends in a slash. */); | |
14d55bce RS |
1104 | Vcompletion_ignored_extensions = Qnil; |
1105 | } | |
6b61353c KH |
1106 | |
1107 | /* arch-tag: 1ac8deca-4d8f-4d41-ade9-089154d98c03 | |
1108 | (do not change this comment) */ |