Commit | Line | Data |
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14d55bce | 1 | /* Lisp functions for making directory listings. |
0a974c85 GM |
2 | Copyright (C) 1985, 1986, 1993, 1994, 1999, 2000, 2001 |
3 | 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 | |
7c938215 | 9 | the Free Software Foundation; either version 2, 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 | |
3b7ad313 EN |
19 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
20 | Boston, MA 02111-1307, 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 | ||
68c45bf0 | 29 | #include "systime.h" |
7cc9f69f | 30 | #include <errno.h> |
68c45bf0 | 31 | |
3ed991aa RS |
32 | #ifdef VMS |
33 | #include <string.h> | |
34 | #include <rms.h> | |
35 | #include <rmsdef.h> | |
36 | #endif | |
37 | ||
dfcf069d AS |
38 | #ifdef HAVE_UNISTD_H |
39 | #include <unistd.h> | |
40 | #endif | |
41 | ||
d6717cdb JB |
42 | /* The d_nameln member of a struct dirent includes the '\0' character |
43 | on some systems, but not on others. What's worse, you can't tell | |
44 | at compile-time which one it will be, since it really depends on | |
45 | the sort of system providing the filesystem you're reading from, | |
46 | not the system you are running on. Paul Eggert | |
47 | <eggert@bi.twinsun.com> says this occurs when Emacs is running on a | |
48 | SunOS 4.1.2 host, reading a directory that is remote-mounted from a | |
49 | Solaris 2.1 host and is in a native Solaris 2.1 filesystem. | |
50 | ||
51 | Since applying strlen to the name always works, we'll just do that. */ | |
52 | #define NAMLEN(p) strlen (p->d_name) | |
53 | ||
14d55bce RS |
54 | #ifdef SYSV_SYSTEM_DIR |
55 | ||
56 | #include <dirent.h> | |
57 | #define DIRENTRY struct dirent | |
14d55bce | 58 | |
128ecc89 | 59 | #else /* not SYSV_SYSTEM_DIR */ |
14d55bce RS |
60 | |
61 | #ifdef NONSYSTEM_DIR_LIBRARY | |
62 | #include "ndir.h" | |
63 | #else /* not NONSYSTEM_DIR_LIBRARY */ | |
128ecc89 RS |
64 | #ifdef MSDOS |
65 | #include <dirent.h> | |
66 | #else | |
14d55bce | 67 | #include <sys/dir.h> |
128ecc89 | 68 | #endif |
14d55bce RS |
69 | #endif /* not NONSYSTEM_DIR_LIBRARY */ |
70 | ||
851cab13 DL |
71 | #include <sys/stat.h> |
72 | ||
128ecc89 | 73 | #ifndef MSDOS |
14d55bce | 74 | #define DIRENTRY struct direct |
14d55bce RS |
75 | |
76 | extern DIR *opendir (); | |
77 | extern struct direct *readdir (); | |
78 | ||
128ecc89 RS |
79 | #endif /* not MSDOS */ |
80 | #endif /* not SYSV_SYSTEM_DIR */ | |
81 | ||
82 | #ifdef MSDOS | |
83 | #define DIRENTRY_NONEMPTY(p) ((p)->d_name[0] != 0) | |
84 | #else | |
85 | #define DIRENTRY_NONEMPTY(p) ((p)->d_ino) | |
14d55bce RS |
86 | #endif |
87 | ||
14d55bce RS |
88 | #include "lisp.h" |
89 | #include "buffer.h" | |
90 | #include "commands.h" | |
bd33479f KH |
91 | #include "charset.h" |
92 | #include "coding.h" | |
14d55bce | 93 | #include "regex.h" |
14d55bce | 94 | |
e50c66d3 KH |
95 | /* Returns a search buffer, with a fastmap allocated and ready to go. */ |
96 | extern struct re_pattern_buffer *compile_pattern (); | |
c7e466e1 | 97 | |
851cab13 DL |
98 | /* From filemode.c. Can't go in Lisp.h because of `stat'. */ |
99 | extern void filemodestring P_ ((struct stat *, char *)); | |
100 | ||
14d55bce RS |
101 | #define min(a, b) ((a) < (b) ? (a) : (b)) |
102 | ||
103 | /* if system does not have symbolic links, it does not have lstat. | |
104 | In that case, use ordinary stat instead. */ | |
105 | ||
106 | #ifndef S_IFLNK | |
107 | #define lstat stat | |
108 | #endif | |
109 | ||
97e98a56 | 110 | extern int completion_ignore_case; |
f676868d | 111 | extern Lisp_Object Vcompletion_regexp_list; |
bd33479f | 112 | extern Lisp_Object Vfile_name_coding_system, Vdefault_file_name_coding_system; |
ccbcf979 | 113 | |
14d55bce | 114 | Lisp_Object Vcompletion_ignored_extensions; |
14d55bce | 115 | Lisp_Object Qcompletion_ignore_case; |
32f4334d | 116 | Lisp_Object Qdirectory_files; |
4424b255 | 117 | Lisp_Object Qdirectory_files_and_attributes; |
32f4334d RS |
118 | Lisp_Object Qfile_name_completion; |
119 | Lisp_Object Qfile_name_all_completions; | |
434e6714 | 120 | Lisp_Object Qfile_attributes; |
4424b255 | 121 | Lisp_Object Qfile_attributes_lessp; |
14d55bce | 122 | \f |
2488aba5 AI |
123 | |
124 | Lisp_Object | |
125 | directory_files_internal_unwind (dh) | |
126 | Lisp_Object dh; | |
127 | { | |
128 | DIR *d = (DIR *) ((XINT (XCAR (dh)) << 16) + XINT (XCDR (dh))); | |
129 | closedir (d); | |
130 | return Qnil; | |
131 | } | |
132 | ||
4424b255 GV |
133 | /* Function shared by Fdirectory_files and Fdirectory_files_and_attributes. |
134 | When ATTRS is zero, return a list of directory filenames; when | |
135 | non-zero, return a list of directory filenames and their attributes. */ | |
136 | Lisp_Object | |
137 | directory_files_internal (directory, full, match, nosort, attrs) | |
23bd240f | 138 | Lisp_Object directory, full, match, nosort; |
4424b255 | 139 | int attrs; |
14d55bce RS |
140 | { |
141 | DIR *d; | |
388ac098 GM |
142 | int directory_nbytes; |
143 | Lisp_Object list, dirfilename, encoded_directory; | |
6bbd7a29 | 144 | struct re_pattern_buffer *bufp = NULL; |
96d64004 | 145 | int needsep = 0; |
2488aba5 | 146 | int count = specpdl_ptr - specpdl; |
388ac098 | 147 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5; |
8e42f043 GM |
148 | DIRENTRY *dp; |
149 | int retry_p; | |
32f4334d | 150 | |
96d64004 | 151 | /* Because of file name handlers, these functions might call |
6155fae1 | 152 | Ffuncall, and cause a GC. */ |
388ac098 GM |
153 | list = encoded_directory = dirfilename = Qnil; |
154 | GCPRO5 (match, directory, list, dirfilename, encoded_directory); | |
96d64004 | 155 | directory = Fexpand_file_name (directory, Qnil); |
96d64004 | 156 | dirfilename = Fdirectory_file_name (directory); |
6155fae1 | 157 | |
265a9e55 | 158 | if (!NILP (match)) |
14d55bce RS |
159 | { |
160 | CHECK_STRING (match, 3); | |
ebb9e16f JB |
161 | |
162 | /* MATCH might be a flawed regular expression. Rather than | |
8e6208c5 | 163 | catching and signaling our own errors, we just call |
ebb9e16f | 164 | compile_pattern to do the work for us. */ |
c872c6b2 RS |
165 | /* Pass 1 for the MULTIBYTE arg |
166 | because we do make multibyte strings if the contents warrant. */ | |
14d55bce | 167 | #ifdef VMS |
e50c66d3 | 168 | bufp = compile_pattern (match, 0, |
3e937712 | 169 | buffer_defaults.downcase_table, 0, 1); |
14d55bce | 170 | #else |
3e937712 | 171 | bufp = compile_pattern (match, 0, Qnil, 0, 1); |
14d55bce RS |
172 | #endif |
173 | } | |
174 | ||
b3edfc9b | 175 | /* Note: ENCODE_FILE and DECODE_FILE can GC because they can run |
388ac098 GM |
176 | run_pre_post_conversion_on_str which calls Lisp directly and |
177 | indirectly. */ | |
24c2a54f | 178 | dirfilename = ENCODE_FILE (dirfilename); |
24c2a54f RS |
179 | encoded_directory = ENCODE_FILE (directory); |
180 | ||
e50c66d3 | 181 | /* Now *bufp is the compiled form of MATCH; don't call anything |
6155fae1 JB |
182 | which might compile a new regexp until we're done with the loop! */ |
183 | ||
184 | /* Do this opendir after anything which might signal an error; if | |
8e6208c5 | 185 | an error is signaled while the directory stream is open, we |
6155fae1 JB |
186 | have to make sure it gets closed, and setting up an |
187 | unwind_protect to do so would be a pain. */ | |
8e42f043 GM |
188 | retry: |
189 | ||
6155fae1 | 190 | d = opendir (XSTRING (dirfilename)->data); |
388ac098 | 191 | if (d == NULL) |
23bd240f | 192 | report_file_error ("Opening directory", Fcons (directory, Qnil)); |
14d55bce | 193 | |
2488aba5 AI |
194 | /* Unfortunately, we can now invoke expand-file-name and |
195 | file-attributes on filenames, both of which can throw, so we must | |
196 | do a proper unwind-protect. */ | |
197 | record_unwind_protect (directory_files_internal_unwind, | |
198 | Fcons (make_number (((unsigned long) d) >> 16), | |
199 | make_number (((unsigned long) d) & 0xffff))); | |
200 | ||
388ac098 | 201 | directory_nbytes = STRING_BYTES (XSTRING (directory)); |
c81a9bdc | 202 | re_match_object = Qt; |
14d55bce | 203 | |
96d64004 AS |
204 | /* Decide whether we need to add a directory separator. */ |
205 | #ifndef VMS | |
388ac098 GM |
206 | if (directory_nbytes == 0 |
207 | || !IS_ANY_SEP (XSTRING (directory)->data[directory_nbytes - 1])) | |
96d64004 | 208 | needsep = 1; |
e540cbed | 209 | #endif /* not VMS */ |
96d64004 | 210 | |
8e42f043 | 211 | /* Loop reading blocks until EOF or error. */ |
7cc9f69f | 212 | errno = 0; |
8e42f043 | 213 | while ((dp = readdir (d)) != NULL) |
14d55bce | 214 | { |
128ecc89 | 215 | if (DIRENTRY_NONEMPTY (dp)) |
14d55bce | 216 | { |
e23f810c | 217 | int len; |
2488aba5 | 218 | int wanted = 0; |
388ac098 GM |
219 | Lisp_Object name, finalname; |
220 | struct gcpro gcpro1, gcpro2; | |
e23f810c KH |
221 | |
222 | len = NAMLEN (dp); | |
9ad4f3e5 | 223 | name = finalname = make_unibyte_string (dp->d_name, len); |
388ac098 GM |
224 | GCPRO2 (finalname, name); |
225 | ||
226 | /* Note: ENCODE_FILE can GC; it should protect its argument, | |
227 | though. */ | |
228 | name = DECODE_FILE (name); | |
e23f810c KH |
229 | len = STRING_BYTES (XSTRING (name)); |
230 | ||
2488aba5 AI |
231 | /* Now that we have unwind_protect in place, we might as well |
232 | allow matching to be interrupted. */ | |
233 | immediate_quit = 1; | |
234 | QUIT; | |
235 | ||
265a9e55 | 236 | if (NILP (match) |
e23f810c | 237 | || (0 <= re_search (bufp, XSTRING (name)->data, len, 0, len, 0))) |
388ac098 | 238 | wanted = 1; |
2488aba5 AI |
239 | |
240 | immediate_quit = 0; | |
241 | ||
242 | if (wanted) | |
14d55bce | 243 | { |
265a9e55 | 244 | if (!NILP (full)) |
14d55bce | 245 | { |
e23f810c | 246 | Lisp_Object fullname; |
388ac098 GM |
247 | int nbytes = len + directory_nbytes + needsep; |
248 | int nchars; | |
5617588f | 249 | |
388ac098 | 250 | fullname = make_uninit_multibyte_string (nbytes, nbytes); |
e23f810c | 251 | bcopy (XSTRING (directory)->data, XSTRING (fullname)->data, |
388ac098 GM |
252 | directory_nbytes); |
253 | ||
5617588f | 254 | if (needsep) |
cb154426 | 255 | XSTRING (fullname)->data[directory_nbytes] = DIRECTORY_SEP; |
388ac098 | 256 | |
e23f810c | 257 | bcopy (XSTRING (name)->data, |
388ac098 GM |
258 | XSTRING (fullname)->data + directory_nbytes + needsep, |
259 | len); | |
260 | ||
261 | nchars = chars_in_text (XSTRING (fullname)->data, nbytes); | |
262 | ||
263 | /* Some bug somewhere. */ | |
264 | if (nchars > nbytes) | |
265 | abort (); | |
266 | ||
e23f810c | 267 | XSTRING (fullname)->size = nchars; |
388ac098 | 268 | if (nchars == nbytes) |
e23f810c | 269 | SET_STRING_BYTES (XSTRING (fullname), -1); |
388ac098 | 270 | |
4424b255 GV |
271 | finalname = fullname; |
272 | } | |
aab9c564 KH |
273 | else |
274 | finalname = name; | |
4424b255 GV |
275 | |
276 | if (attrs) | |
277 | { | |
278 | /* Construct an expanded filename for the directory entry. | |
279 | Use the decoded names for input to Ffile_attributes. */ | |
388ac098 GM |
280 | Lisp_Object decoded_fullname, fileattrs; |
281 | struct gcpro gcpro1, gcpro2; | |
282 | ||
283 | decoded_fullname = fileattrs = Qnil; | |
284 | GCPRO2 (decoded_fullname, fileattrs); | |
4424b255 | 285 | |
388ac098 | 286 | /* Both Fexpand_file_name and Ffile_attributes can GC. */ |
4424b255 GV |
287 | decoded_fullname = Fexpand_file_name (name, directory); |
288 | fileattrs = Ffile_attributes (decoded_fullname); | |
289 | ||
290 | list = Fcons (Fcons (finalname, fileattrs), list); | |
388ac098 | 291 | UNGCPRO; |
4424b255 GV |
292 | } |
293 | else | |
388ac098 | 294 | list = Fcons (finalname, list); |
14d55bce | 295 | } |
388ac098 GM |
296 | |
297 | UNGCPRO; | |
14d55bce RS |
298 | } |
299 | } | |
2488aba5 | 300 | |
8e42f043 GM |
301 | retry_p = 0; |
302 | #ifdef EAGAIN | |
303 | retry_p |= errno == EAGAIN; | |
304 | #endif | |
305 | #ifdef EINTR | |
306 | retry_p |= errno == EINTR; | |
307 | #endif | |
308 | ||
14d55bce | 309 | closedir (d); |
2488aba5 AI |
310 | |
311 | /* Discard the unwind protect. */ | |
312 | specpdl_ptr = specpdl + count; | |
313 | ||
8e42f043 GM |
314 | if (retry_p) |
315 | goto retry; | |
316 | ||
388ac098 GM |
317 | if (NILP (nosort)) |
318 | list = Fsort (Fnreverse (list), | |
319 | attrs ? Qfile_attributes_lessp : Qstring_lessp); | |
320 | ||
321 | RETURN_UNGCPRO (list); | |
14d55bce | 322 | } |
4424b255 GV |
323 | |
324 | ||
325 | DEFUN ("directory-files", Fdirectory_files, Sdirectory_files, 1, 4, 0, | |
326 | "Return a list of names of files in DIRECTORY.\n\ | |
327 | There are three optional arguments:\n\ | |
328 | If FULL is non-nil, return absolute file names. Otherwise return names\n\ | |
329 | that are relative to the specified directory.\n\ | |
330 | If MATCH is non-nil, mention only file names that match the regexp MATCH.\n\ | |
331 | If NOSORT is non-nil, the list is not sorted--its order is unpredictable.\n\ | |
332 | NOSORT is useful if you plan to sort the result yourself.") | |
333 | (directory, full, match, nosort) | |
334 | Lisp_Object directory, full, match, nosort; | |
335 | { | |
336 | Lisp_Object handler; | |
337 | ||
338 | /* If the file name has special constructs in it, | |
339 | call the corresponding file handler. */ | |
340 | handler = Ffind_file_name_handler (directory, Qdirectory_files); | |
341 | if (!NILP (handler)) | |
342 | { | |
343 | Lisp_Object args[6]; | |
344 | ||
345 | args[0] = handler; | |
346 | args[1] = Qdirectory_files; | |
347 | args[2] = directory; | |
348 | args[3] = full; | |
349 | args[4] = match; | |
350 | args[5] = nosort; | |
351 | return Ffuncall (6, args); | |
352 | } | |
353 | ||
354 | return directory_files_internal (directory, full, match, nosort, 0); | |
355 | } | |
356 | ||
357 | DEFUN ("directory-files-and-attributes", Fdirectory_files_and_attributes, Sdirectory_files_and_attributes, 1, 4, 0, | |
358 | "Return a list of names of files and their attributes in DIRECTORY.\n\ | |
359 | There are three optional arguments:\n\ | |
360 | If FULL is non-nil, return absolute file names. Otherwise return names\n\ | |
361 | that are relative to the specified directory.\n\ | |
362 | If MATCH is non-nil, mention only file names that match the regexp MATCH.\n\ | |
363 | If NOSORT is non-nil, the list is not sorted--its order is unpredictable.\n\ | |
364 | NOSORT is useful if you plan to sort the result yourself.") | |
365 | (directory, full, match, nosort) | |
366 | Lisp_Object directory, full, match, nosort; | |
367 | { | |
368 | Lisp_Object handler; | |
369 | ||
370 | /* If the file name has special constructs in it, | |
371 | call the corresponding file handler. */ | |
372 | handler = Ffind_file_name_handler (directory, Qdirectory_files_and_attributes); | |
373 | if (!NILP (handler)) | |
374 | { | |
375 | Lisp_Object args[6]; | |
376 | ||
377 | args[0] = handler; | |
378 | args[1] = Qdirectory_files_and_attributes; | |
379 | args[2] = directory; | |
380 | args[3] = full; | |
381 | args[4] = match; | |
382 | args[5] = nosort; | |
383 | return Ffuncall (6, args); | |
384 | } | |
385 | ||
386 | return directory_files_internal (directory, full, match, nosort, 1); | |
387 | } | |
388 | ||
14d55bce RS |
389 | \f |
390 | Lisp_Object file_name_completion (); | |
391 | ||
392 | DEFUN ("file-name-completion", Ffile_name_completion, Sfile_name_completion, | |
393 | 2, 2, 0, | |
23bd240f | 394 | "Complete file name FILE in directory DIRECTORY.\n\ |
14d55bce | 395 | Returns the longest string\n\ |
7b6540dd | 396 | common to all file names in DIRECTORY that start with FILE.\n\ |
14d55bce RS |
397 | If there is only one and FILE matches it exactly, returns t.\n\ |
398 | Returns nil if DIR contains no name starting with FILE.") | |
23bd240f EN |
399 | (file, directory) |
400 | Lisp_Object file, directory; | |
14d55bce | 401 | { |
32f4334d | 402 | Lisp_Object handler; |
32f4334d | 403 | |
8436e231 | 404 | /* If the directory name has special constructs in it, |
32f4334d | 405 | call the corresponding file handler. */ |
23bd240f | 406 | handler = Ffind_file_name_handler (directory, Qfile_name_completion); |
32f4334d | 407 | if (!NILP (handler)) |
23bd240f | 408 | return call3 (handler, Qfile_name_completion, file, directory); |
32f4334d | 409 | |
8436e231 RS |
410 | /* If the file name has special constructs in it, |
411 | call the corresponding file handler. */ | |
412 | handler = Ffind_file_name_handler (file, Qfile_name_completion); | |
413 | if (!NILP (handler)) | |
23bd240f | 414 | return call3 (handler, Qfile_name_completion, file, directory); |
8436e231 | 415 | |
23bd240f | 416 | return file_name_completion (file, directory, 0, 0); |
14d55bce RS |
417 | } |
418 | ||
419 | DEFUN ("file-name-all-completions", Ffile_name_all_completions, | |
420 | Sfile_name_all_completions, 2, 2, 0, | |
23bd240f EN |
421 | "Return a list of all completions of file name FILE in directory DIRECTORY.\n\ |
422 | These are all file names in directory DIRECTORY which begin with FILE.") | |
423 | (file, directory) | |
424 | Lisp_Object file, directory; | |
14d55bce | 425 | { |
32f4334d RS |
426 | Lisp_Object handler; |
427 | ||
8436e231 | 428 | /* If the directory name has special constructs in it, |
32f4334d | 429 | call the corresponding file handler. */ |
23bd240f | 430 | handler = Ffind_file_name_handler (directory, Qfile_name_all_completions); |
32f4334d | 431 | if (!NILP (handler)) |
23bd240f | 432 | return call3 (handler, Qfile_name_all_completions, file, directory); |
32f4334d | 433 | |
8436e231 RS |
434 | /* If the file name has special constructs in it, |
435 | call the corresponding file handler. */ | |
436 | handler = Ffind_file_name_handler (file, Qfile_name_all_completions); | |
437 | if (!NILP (handler)) | |
23bd240f | 438 | return call3 (handler, Qfile_name_all_completions, file, directory); |
8436e231 | 439 | |
23bd240f | 440 | return file_name_completion (file, directory, 1, 0); |
14d55bce RS |
441 | } |
442 | ||
dfcf069d AS |
443 | static int file_name_completion_stat (); |
444 | ||
14d55bce RS |
445 | Lisp_Object |
446 | file_name_completion (file, dirname, all_flag, ver_flag) | |
447 | Lisp_Object file, dirname; | |
448 | int all_flag, ver_flag; | |
449 | { | |
450 | DIR *d; | |
6bbd7a29 | 451 | int bestmatchsize = 0, skip; |
14d55bce RS |
452 | register int compare, matchsize; |
453 | unsigned char *p1, *p2; | |
454 | int matchcount = 0; | |
455 | Lisp_Object bestmatch, tem, elt, name; | |
24c2a54f RS |
456 | Lisp_Object encoded_file; |
457 | Lisp_Object encoded_dir; | |
14d55bce RS |
458 | struct stat st; |
459 | int directoryp; | |
460 | int passcount; | |
461 | int count = specpdl_ptr - specpdl; | |
24c2a54f | 462 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5; |
3fcc88cc | 463 | |
6bbd7a29 GM |
464 | elt = Qnil; |
465 | ||
14d55bce RS |
466 | #ifdef VMS |
467 | extern DIRENTRY * readdirver (); | |
468 | ||
469 | DIRENTRY *((* readfunc) ()); | |
470 | ||
471 | /* Filename completion on VMS ignores case, since VMS filesys does. */ | |
472 | specbind (Qcompletion_ignore_case, Qt); | |
473 | ||
474 | readfunc = readdir; | |
475 | if (ver_flag) | |
476 | readfunc = readdirver; | |
477 | file = Fupcase (file); | |
478 | #else /* not VMS */ | |
479 | CHECK_STRING (file, 0); | |
480 | #endif /* not VMS */ | |
481 | ||
128ecc89 RS |
482 | #ifdef FILE_SYSTEM_CASE |
483 | file = FILE_SYSTEM_CASE (file); | |
484 | #endif | |
14d55bce | 485 | bestmatch = Qnil; |
24c2a54f RS |
486 | encoded_file = encoded_dir = Qnil; |
487 | GCPRO5 (file, dirname, bestmatch, encoded_file, encoded_dir); | |
3fcc88cc | 488 | dirname = Fexpand_file_name (dirname, Qnil); |
14d55bce | 489 | |
24c2a54f RS |
490 | /* Do completion on the encoded file name |
491 | because the other names in the directory are (we presume) | |
492 | encoded likewise. We decode the completed string at the end. */ | |
493 | encoded_file = ENCODE_FILE (file); | |
494 | ||
495 | encoded_dir = ENCODE_FILE (dirname); | |
496 | ||
14d55bce RS |
497 | /* With passcount = 0, ignore files that end in an ignored extension. |
498 | If nothing found then try again with passcount = 1, don't ignore them. | |
499 | If looking for all completions, start with passcount = 1, | |
500 | so always take even the ignored ones. | |
501 | ||
502 | ** It would not actually be helpful to the user to ignore any possible | |
503 | completions when making a list of them.** */ | |
504 | ||
265a9e55 | 505 | for (passcount = !!all_flag; NILP (bestmatch) && passcount < 2; passcount++) |
14d55bce | 506 | { |
24c2a54f RS |
507 | d = opendir (XSTRING (Fdirectory_file_name (encoded_dir))->data); |
508 | if (!d) | |
14d55bce RS |
509 | report_file_error ("Opening directory", Fcons (dirname, Qnil)); |
510 | ||
511 | /* Loop reading blocks */ | |
512 | /* (att3b compiler bug requires do a null comparison this way) */ | |
513 | while (1) | |
514 | { | |
515 | DIRENTRY *dp; | |
516 | int len; | |
517 | ||
518 | #ifdef VMS | |
519 | dp = (*readfunc) (d); | |
520 | #else | |
521 | dp = readdir (d); | |
522 | #endif | |
523 | if (!dp) break; | |
524 | ||
525 | len = NAMLEN (dp); | |
526 | ||
265a9e55 | 527 | if (!NILP (Vquit_flag) && NILP (Vinhibit_quit)) |
14d55bce | 528 | goto quit; |
128ecc89 | 529 | if (! DIRENTRY_NONEMPTY (dp) |
24c2a54f RS |
530 | || len < XSTRING (encoded_file)->size |
531 | || 0 <= scmp (dp->d_name, XSTRING (encoded_file)->data, | |
532 | XSTRING (encoded_file)->size)) | |
14d55bce RS |
533 | continue; |
534 | ||
24c2a54f | 535 | if (file_name_completion_stat (encoded_dir, dp, &st) < 0) |
14d55bce RS |
536 | continue; |
537 | ||
538 | directoryp = ((st.st_mode & S_IFMT) == S_IFDIR); | |
539 | tem = Qnil; | |
ad456ad4 RS |
540 | if (directoryp) |
541 | { | |
542 | #ifndef TRIVIAL_DIRECTORY_ENTRY | |
543 | #define TRIVIAL_DIRECTORY_ENTRY(n) (!strcmp (n, ".") || !strcmp (n, "..")) | |
544 | #endif | |
545 | /* "." and ".." are never interesting as completions, but are | |
546 | actually in the way in a directory contains only one file. */ | |
547 | if (!passcount && TRIVIAL_DIRECTORY_ENTRY (dp->d_name)) | |
548 | continue; | |
549 | } | |
550 | else | |
14d55bce RS |
551 | { |
552 | /* Compare extensions-to-be-ignored against end of this file name */ | |
553 | /* if name is not an exact match against specified string */ | |
24c2a54f | 554 | if (!passcount && len > XSTRING (encoded_file)->size) |
14d55bce RS |
555 | /* and exit this for loop if a match is found */ |
556 | for (tem = Vcompletion_ignored_extensions; | |
70949dac | 557 | CONSP (tem); tem = XCDR (tem)) |
14d55bce | 558 | { |
70949dac | 559 | elt = XCAR (tem); |
88cf1852 | 560 | if (!STRINGP (elt)) continue; |
14d55bce RS |
561 | skip = len - XSTRING (elt)->size; |
562 | if (skip < 0) continue; | |
563 | ||
564 | if (0 <= scmp (dp->d_name + skip, | |
565 | XSTRING (elt)->data, | |
566 | XSTRING (elt)->size)) | |
567 | continue; | |
568 | break; | |
569 | } | |
570 | } | |
571 | ||
f676868d KH |
572 | /* If an ignored-extensions match was found, |
573 | don't process this name as a completion. */ | |
574 | if (!passcount && CONSP (tem)) | |
575 | continue; | |
576 | ||
577 | if (!passcount) | |
14d55bce | 578 | { |
f676868d KH |
579 | Lisp_Object regexps; |
580 | Lisp_Object zero; | |
617b3bfe | 581 | XSETFASTINT (zero, 0); |
f676868d KH |
582 | |
583 | /* Ignore this element if it fails to match all the regexps. */ | |
584 | for (regexps = Vcompletion_regexp_list; CONSP (regexps); | |
70949dac | 585 | regexps = XCDR (regexps)) |
f676868d | 586 | { |
70949dac | 587 | tem = Fstring_match (XCAR (regexps), elt, zero); |
f676868d KH |
588 | if (NILP (tem)) |
589 | break; | |
590 | } | |
591 | if (CONSP (regexps)) | |
592 | continue; | |
593 | } | |
14d55bce | 594 | |
f676868d | 595 | /* Update computation of how much all possible completions match */ |
14d55bce | 596 | |
f676868d KH |
597 | matchcount++; |
598 | ||
599 | if (all_flag || NILP (bestmatch)) | |
600 | { | |
601 | /* This is a possible completion */ | |
602 | if (directoryp) | |
14d55bce | 603 | { |
f676868d KH |
604 | /* This completion is a directory; make it end with '/' */ |
605 | name = Ffile_name_as_directory (make_string (dp->d_name, len)); | |
606 | } | |
607 | else | |
608 | name = make_string (dp->d_name, len); | |
609 | if (all_flag) | |
610 | { | |
bd33479f | 611 | name = DECODE_FILE (name); |
f676868d | 612 | bestmatch = Fcons (name, bestmatch); |
14d55bce RS |
613 | } |
614 | else | |
615 | { | |
f676868d KH |
616 | bestmatch = name; |
617 | bestmatchsize = XSTRING (name)->size; | |
618 | } | |
619 | } | |
620 | else | |
621 | { | |
622 | compare = min (bestmatchsize, len); | |
623 | p1 = XSTRING (bestmatch)->data; | |
624 | p2 = (unsigned char *) dp->d_name; | |
625 | matchsize = scmp(p1, p2, compare); | |
626 | if (matchsize < 0) | |
627 | matchsize = compare; | |
628 | if (completion_ignore_case) | |
629 | { | |
630 | /* If this is an exact match except for case, | |
631 | use it as the best match rather than one that is not | |
632 | an exact match. This way, we get the case pattern | |
633 | of the actual match. */ | |
f5ec5d3d RS |
634 | /* This tests that the current file is an exact match |
635 | but BESTMATCH is not (it is too long). */ | |
f676868d KH |
636 | if ((matchsize == len |
637 | && matchsize + !!directoryp | |
638 | < XSTRING (bestmatch)->size) | |
639 | || | |
640 | /* If there is no exact match ignoring case, | |
641 | prefer a match that does not change the case | |
642 | of the input. */ | |
f5ec5d3d RS |
643 | /* If there is more than one exact match aside from |
644 | case, and one of them is exact including case, | |
645 | prefer that one. */ | |
646 | /* This == checks that, of current file and BESTMATCH, | |
647 | either both or neither are exact. */ | |
f676868d KH |
648 | (((matchsize == len) |
649 | == | |
650 | (matchsize + !!directoryp | |
651 | == XSTRING (bestmatch)->size)) | |
24c2a54f RS |
652 | && !bcmp (p2, XSTRING (encoded_file)->data, XSTRING (encoded_file)->size) |
653 | && bcmp (p1, XSTRING (encoded_file)->data, XSTRING (encoded_file)->size))) | |
97e98a56 | 654 | { |
f676868d KH |
655 | bestmatch = make_string (dp->d_name, len); |
656 | if (directoryp) | |
657 | bestmatch = Ffile_name_as_directory (bestmatch); | |
97e98a56 | 658 | } |
14d55bce | 659 | } |
f676868d KH |
660 | |
661 | /* If this dirname all matches, see if implicit following | |
662 | slash does too. */ | |
663 | if (directoryp | |
664 | && compare == matchsize | |
665 | && bestmatchsize > matchsize | |
0b39d75d | 666 | && IS_ANY_SEP (p1[matchsize])) |
f676868d KH |
667 | matchsize++; |
668 | bestmatchsize = matchsize; | |
14d55bce RS |
669 | } |
670 | } | |
671 | closedir (d); | |
672 | } | |
673 | ||
3fcc88cc RS |
674 | UNGCPRO; |
675 | bestmatch = unbind_to (count, bestmatch); | |
14d55bce | 676 | |
265a9e55 | 677 | if (all_flag || NILP (bestmatch)) |
24c2a54f | 678 | { |
bd33479f KH |
679 | if (STRINGP (bestmatch)) |
680 | bestmatch = DECODE_FILE (bestmatch); | |
24c2a54f RS |
681 | return bestmatch; |
682 | } | |
14d55bce RS |
683 | if (matchcount == 1 && bestmatchsize == XSTRING (file)->size) |
684 | return Qt; | |
24c2a54f RS |
685 | bestmatch = Fsubstring (bestmatch, make_number (0), |
686 | make_number (bestmatchsize)); | |
687 | /* Now that we got the right initial segment of BESTMATCH, | |
688 | decode it from the coding system in use. */ | |
bd33479f | 689 | bestmatch = DECODE_FILE (bestmatch); |
24c2a54f RS |
690 | return bestmatch; |
691 | ||
14d55bce RS |
692 | quit: |
693 | if (d) closedir (d); | |
694 | Vquit_flag = Qnil; | |
695 | return Fsignal (Qquit, Qnil); | |
696 | } | |
697 | ||
dfcf069d | 698 | static int |
14d55bce RS |
699 | file_name_completion_stat (dirname, dp, st_addr) |
700 | Lisp_Object dirname; | |
701 | DIRENTRY *dp; | |
702 | struct stat *st_addr; | |
703 | { | |
704 | int len = NAMLEN (dp); | |
705 | int pos = XSTRING (dirname)->size; | |
7e3cf34f | 706 | int value; |
14d55bce RS |
707 | char *fullname = (char *) alloca (len + pos + 2); |
708 | ||
04924ee3 RS |
709 | #ifdef MSDOS |
710 | #if __DJGPP__ > 1 | |
711 | /* Some fields of struct stat are *very* expensive to compute on MS-DOS, | |
712 | but aren't required here. Avoid computing the following fields: | |
713 | st_inode, st_size and st_nlink for directories, and the execute bits | |
714 | in st_mode for non-directory files with non-standard extensions. */ | |
715 | ||
716 | unsigned short save_djstat_flags = _djstat_flags; | |
717 | ||
718 | _djstat_flags = _STAT_INODE | _STAT_EXEC_MAGIC | _STAT_DIRSIZE; | |
719 | #endif /* __DJGPP__ > 1 */ | |
720 | #endif /* MSDOS */ | |
721 | ||
14d55bce RS |
722 | bcopy (XSTRING (dirname)->data, fullname, pos); |
723 | #ifndef VMS | |
0b39d75d RS |
724 | if (!IS_DIRECTORY_SEP (fullname[pos - 1])) |
725 | fullname[pos++] = DIRECTORY_SEP; | |
14d55bce RS |
726 | #endif |
727 | ||
728 | bcopy (dp->d_name, fullname + pos, len); | |
729 | fullname[pos + len] = 0; | |
730 | ||
a889bd0e | 731 | #ifdef S_IFLNK |
7e3cf34f RS |
732 | /* We want to return success if a link points to a nonexistent file, |
733 | but we want to return the status for what the link points to, | |
734 | in case it is a directory. */ | |
735 | value = lstat (fullname, st_addr); | |
736 | stat (fullname, st_addr); | |
737 | return value; | |
a889bd0e | 738 | #else |
04924ee3 RS |
739 | value = stat (fullname, st_addr); |
740 | #ifdef MSDOS | |
741 | #if __DJGPP__ > 1 | |
742 | _djstat_flags = save_djstat_flags; | |
743 | #endif /* __DJGPP__ > 1 */ | |
744 | #endif /* MSDOS */ | |
745 | return value; | |
746 | #endif /* S_IFLNK */ | |
14d55bce RS |
747 | } |
748 | \f | |
3ed991aa RS |
749 | #ifdef VMS |
750 | ||
751 | DEFUN ("file-name-all-versions", Ffile_name_all_versions, | |
752 | Sfile_name_all_versions, 2, 2, 0, | |
23bd240f EN |
753 | "Return a list of all versions of file name FILE in directory DIRECTORY.") |
754 | (file, directory) | |
755 | Lisp_Object file, directory; | |
3ed991aa | 756 | { |
23bd240f | 757 | return file_name_completion (file, directory, 1, 1); |
3ed991aa RS |
758 | } |
759 | ||
760 | DEFUN ("file-version-limit", Ffile_version_limit, Sfile_version_limit, 1, 1, 0, | |
761 | "Return the maximum number of versions allowed for FILE.\n\ | |
762 | Returns nil if the file cannot be opened or if there is no version limit.") | |
763 | (filename) | |
764 | Lisp_Object filename; | |
765 | { | |
766 | Lisp_Object retval; | |
767 | struct FAB fab; | |
768 | struct RAB rab; | |
769 | struct XABFHC xabfhc; | |
770 | int status; | |
771 | ||
772 | filename = Fexpand_file_name (filename, Qnil); | |
773 | fab = cc$rms_fab; | |
774 | xabfhc = cc$rms_xabfhc; | |
775 | fab.fab$l_fna = XSTRING (filename)->data; | |
776 | fab.fab$b_fns = strlen (fab.fab$l_fna); | |
777 | fab.fab$l_xab = (char *) &xabfhc; | |
778 | status = sys$open (&fab, 0, 0); | |
779 | if (status != RMS$_NORMAL) /* Probably non-existent file */ | |
780 | return Qnil; | |
781 | sys$close (&fab, 0, 0); | |
782 | if (xabfhc.xab$w_verlimit == 32767) | |
783 | return Qnil; /* No version limit */ | |
784 | else | |
785 | return make_number (xabfhc.xab$w_verlimit); | |
786 | } | |
787 | ||
788 | #endif /* VMS */ | |
789 | \f | |
14d55bce RS |
790 | Lisp_Object |
791 | make_time (time) | |
e5124be7 | 792 | time_t time; |
14d55bce RS |
793 | { |
794 | return Fcons (make_number (time >> 16), | |
795 | Fcons (make_number (time & 0177777), Qnil)); | |
796 | } | |
797 | ||
798 | DEFUN ("file-attributes", Ffile_attributes, Sfile_attributes, 1, 1, 0, | |
799 | "Return a list of attributes of file FILENAME.\n\ | |
800 | Value is nil if specified file cannot be opened.\n\ | |
801 | Otherwise, list elements are:\n\ | |
802 | 0. t for directory, string (name linked to) for symbolic link, or nil.\n\ | |
803 | 1. Number of links to file.\n\ | |
804 | 2. File uid.\n\ | |
805 | 3. File gid.\n\ | |
806 | 4. Last access time, as a list of two integers.\n\ | |
807 | First integer has high-order 16 bits of time, second has low 16 bits.\n\ | |
808 | 5. Last modification time, likewise.\n\ | |
809 | 6. Last status change time, likewise.\n\ | |
cb1846b4 EZ |
810 | 7. Size in bytes.\n\ |
811 | This is a floating point number if the size is too large for an integer.\n\ | |
14d55bce RS |
812 | 8. File modes, as a string of ten letters or dashes as in ls -l.\n\ |
813 | 9. t iff file's gid would change if file were deleted and recreated.\n\ | |
cb1846b4 | 814 | 10. inode number. If inode number is larger than the Emacs integer,\n\ |
6d4e6528 RS |
815 | this is a cons cell containing two integers: first the high part,\n\ |
816 | then the low 16 bits.\n\ | |
14d55bce RS |
817 | 11. Device number.\n\ |
818 | \n\ | |
ccbcf979 | 819 | If file does not exist, returns nil.") |
14d55bce RS |
820 | (filename) |
821 | Lisp_Object filename; | |
822 | { | |
823 | Lisp_Object values[12]; | |
24c2a54f | 824 | Lisp_Object encoded; |
14d55bce | 825 | struct stat s; |
0a974c85 | 826 | #if defined (BSD4_2) || defined (BSD4_3) |
b3edfc9b | 827 | Lisp_Object dirname; |
14d55bce | 828 | struct stat sdir; |
b3edfc9b | 829 | #endif |
14d55bce | 830 | char modes[10]; |
32f4334d | 831 | Lisp_Object handler; |
14d55bce RS |
832 | |
833 | filename = Fexpand_file_name (filename, Qnil); | |
32f4334d RS |
834 | |
835 | /* If the file name has special constructs in it, | |
836 | call the corresponding file handler. */ | |
a617e913 | 837 | handler = Ffind_file_name_handler (filename, Qfile_attributes); |
32f4334d RS |
838 | if (!NILP (handler)) |
839 | return call2 (handler, Qfile_attributes, filename); | |
840 | ||
24c2a54f RS |
841 | encoded = ENCODE_FILE (filename); |
842 | ||
843 | if (lstat (XSTRING (encoded)->data, &s) < 0) | |
14d55bce RS |
844 | return Qnil; |
845 | ||
846 | switch (s.st_mode & S_IFMT) | |
847 | { | |
848 | default: | |
849 | values[0] = Qnil; break; | |
850 | case S_IFDIR: | |
851 | values[0] = Qt; break; | |
852 | #ifdef S_IFLNK | |
853 | case S_IFLNK: | |
854 | values[0] = Ffile_symlink_p (filename); break; | |
855 | #endif | |
856 | } | |
857 | values[1] = make_number (s.st_nlink); | |
858 | values[2] = make_number (s.st_uid); | |
859 | values[3] = make_number (s.st_gid); | |
860 | values[4] = make_time (s.st_atime); | |
861 | values[5] = make_time (s.st_mtime); | |
862 | values[6] = make_time (s.st_ctime); | |
68c45bf0 | 863 | values[7] = make_number (s.st_size); |
cb1846b4 | 864 | /* If the size is out of range for an integer, return a float. */ |
60fc6069 | 865 | if (XINT (values[7]) != s.st_size) |
cb1846b4 | 866 | values[7] = make_float ((double)s.st_size); |
14d55bce RS |
867 | filemodestring (&s, modes); |
868 | values[8] = make_string (modes, 10); | |
0a974c85 | 869 | #if defined (BSD4_2) || defined (BSD4_3) /* file gid will be dir gid */ |
14d55bce | 870 | dirname = Ffile_name_directory (filename); |
24c2a54f RS |
871 | if (! NILP (dirname)) |
872 | encoded = ENCODE_FILE (dirname); | |
873 | if (! NILP (dirname) && stat (XSTRING (encoded)->data, &sdir) == 0) | |
14d55bce RS |
874 | values[9] = (sdir.st_gid != s.st_gid) ? Qt : Qnil; |
875 | else /* if we can't tell, assume worst */ | |
876 | values[9] = Qt; | |
877 | #else /* file gid will be egid */ | |
878 | values[9] = (s.st_gid != getegid ()) ? Qt : Qnil; | |
879 | #endif /* BSD4_2 (or BSD4_3) */ | |
ce4200f6 RS |
880 | /* Cast -1 to avoid warning if int is not as wide as VALBITS. */ |
881 | if (s.st_ino & (((EMACS_INT) (-1)) << VALBITS)) | |
4c637faa RS |
882 | /* To allow inode numbers larger than VALBITS, separate the bottom |
883 | 16 bits. */ | |
884 | values[10] = Fcons (make_number (s.st_ino >> 16), | |
885 | make_number (s.st_ino & 0xffff)); | |
886 | else | |
887 | /* But keep the most common cases as integers. */ | |
888 | values[10] = make_number (s.st_ino); | |
68c45bf0 PE |
889 | |
890 | /* Likewise for device. */ | |
891 | if (s.st_dev & (((EMACS_INT) (-1)) << VALBITS)) | |
892 | values[11] = Fcons (make_number (s.st_dev >> 16), | |
893 | make_number (s.st_dev & 0xffff)); | |
894 | else | |
895 | values[11] = make_number (s.st_dev); | |
896 | ||
14d55bce RS |
897 | return Flist (sizeof(values) / sizeof(values[0]), values); |
898 | } | |
4424b255 GV |
899 | |
900 | DEFUN ("file-attributes-lessp", Ffile_attributes_lessp, Sfile_attributes_lessp, 2, 2, 0, | |
901 | "Return t if first arg file attributes list is less than second.\n\ | |
902 | Comparison is in lexicographic order and case is significant.") | |
903 | (f1, f2) | |
904 | Lisp_Object f1, f2; | |
905 | { | |
906 | return Fstring_lessp (Fcar (f1), Fcar (f2)); | |
907 | } | |
14d55bce | 908 | \f |
dfcf069d | 909 | void |
14d55bce RS |
910 | syms_of_dired () |
911 | { | |
32f4334d | 912 | Qdirectory_files = intern ("directory-files"); |
4424b255 | 913 | Qdirectory_files_and_attributes = intern ("directory-files-and-attributes"); |
32f4334d RS |
914 | Qfile_name_completion = intern ("file-name-completion"); |
915 | Qfile_name_all_completions = intern ("file-name-all-completions"); | |
434e6714 | 916 | Qfile_attributes = intern ("file-attributes"); |
4424b255 | 917 | Qfile_attributes_lessp = intern ("file-attributes-lessp"); |
32f4334d | 918 | |
a2d3836c | 919 | staticpro (&Qdirectory_files); |
4424b255 | 920 | staticpro (&Qdirectory_files_and_attributes); |
a2d3836c EN |
921 | staticpro (&Qfile_name_completion); |
922 | staticpro (&Qfile_name_all_completions); | |
923 | staticpro (&Qfile_attributes); | |
4424b255 | 924 | staticpro (&Qfile_attributes_lessp); |
a2d3836c | 925 | |
14d55bce | 926 | defsubr (&Sdirectory_files); |
4424b255 | 927 | defsubr (&Sdirectory_files_and_attributes); |
14d55bce RS |
928 | defsubr (&Sfile_name_completion); |
929 | #ifdef VMS | |
930 | defsubr (&Sfile_name_all_versions); | |
3ed991aa | 931 | defsubr (&Sfile_version_limit); |
14d55bce RS |
932 | #endif /* VMS */ |
933 | defsubr (&Sfile_name_all_completions); | |
934 | defsubr (&Sfile_attributes); | |
4424b255 | 935 | defsubr (&Sfile_attributes_lessp); |
14d55bce RS |
936 | |
937 | #ifdef VMS | |
938 | Qcompletion_ignore_case = intern ("completion-ignore-case"); | |
939 | staticpro (&Qcompletion_ignore_case); | |
940 | #endif /* VMS */ | |
941 | ||
942 | DEFVAR_LISP ("completion-ignored-extensions", &Vcompletion_ignored_extensions, | |
943 | "*Completion ignores filenames ending in any string in this list.\n\ | |
944 | This variable does not affect lists of possible completions,\n\ | |
945 | but does affect the commands that actually do completions."); | |
946 | Vcompletion_ignored_extensions = Qnil; | |
947 | } |