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. */ | |
f69f9da1 | 136 | |
4424b255 GV |
137 | Lisp_Object |
138 | directory_files_internal (directory, full, match, nosort, attrs) | |
23bd240f | 139 | Lisp_Object directory, full, match, nosort; |
4424b255 | 140 | int attrs; |
14d55bce RS |
141 | { |
142 | DIR *d; | |
388ac098 GM |
143 | int directory_nbytes; |
144 | Lisp_Object list, dirfilename, encoded_directory; | |
6bbd7a29 | 145 | struct re_pattern_buffer *bufp = NULL; |
96d64004 | 146 | int needsep = 0; |
2488aba5 | 147 | int count = specpdl_ptr - specpdl; |
388ac098 | 148 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5; |
8e42f043 GM |
149 | DIRENTRY *dp; |
150 | int retry_p; | |
32f4334d | 151 | |
96d64004 | 152 | /* Because of file name handlers, these functions might call |
6155fae1 | 153 | Ffuncall, and cause a GC. */ |
388ac098 GM |
154 | list = encoded_directory = dirfilename = Qnil; |
155 | GCPRO5 (match, directory, list, dirfilename, encoded_directory); | |
96d64004 | 156 | directory = Fexpand_file_name (directory, Qnil); |
96d64004 | 157 | dirfilename = Fdirectory_file_name (directory); |
6155fae1 | 158 | |
265a9e55 | 159 | if (!NILP (match)) |
14d55bce RS |
160 | { |
161 | CHECK_STRING (match, 3); | |
ebb9e16f JB |
162 | |
163 | /* MATCH might be a flawed regular expression. Rather than | |
8e6208c5 | 164 | catching and signaling our own errors, we just call |
ebb9e16f | 165 | compile_pattern to do the work for us. */ |
c872c6b2 RS |
166 | /* Pass 1 for the MULTIBYTE arg |
167 | because we do make multibyte strings if the contents warrant. */ | |
14d55bce | 168 | #ifdef VMS |
e50c66d3 | 169 | bufp = compile_pattern (match, 0, |
3e937712 | 170 | buffer_defaults.downcase_table, 0, 1); |
14d55bce | 171 | #else |
3e937712 | 172 | bufp = compile_pattern (match, 0, Qnil, 0, 1); |
14d55bce RS |
173 | #endif |
174 | } | |
175 | ||
b3edfc9b | 176 | /* Note: ENCODE_FILE and DECODE_FILE can GC because they can run |
388ac098 GM |
177 | run_pre_post_conversion_on_str which calls Lisp directly and |
178 | indirectly. */ | |
24c2a54f | 179 | dirfilename = ENCODE_FILE (dirfilename); |
24c2a54f RS |
180 | encoded_directory = ENCODE_FILE (directory); |
181 | ||
e50c66d3 | 182 | /* Now *bufp is the compiled form of MATCH; don't call anything |
6155fae1 JB |
183 | which might compile a new regexp until we're done with the loop! */ |
184 | ||
185 | /* Do this opendir after anything which might signal an error; if | |
8e6208c5 | 186 | an error is signaled while the directory stream is open, we |
6155fae1 JB |
187 | have to make sure it gets closed, and setting up an |
188 | unwind_protect to do so would be a pain. */ | |
8e42f043 GM |
189 | retry: |
190 | ||
6155fae1 | 191 | d = opendir (XSTRING (dirfilename)->data); |
388ac098 | 192 | if (d == NULL) |
23bd240f | 193 | report_file_error ("Opening directory", Fcons (directory, Qnil)); |
14d55bce | 194 | |
2488aba5 AI |
195 | /* Unfortunately, we can now invoke expand-file-name and |
196 | file-attributes on filenames, both of which can throw, so we must | |
197 | do a proper unwind-protect. */ | |
198 | record_unwind_protect (directory_files_internal_unwind, | |
199 | Fcons (make_number (((unsigned long) d) >> 16), | |
200 | make_number (((unsigned long) d) & 0xffff))); | |
201 | ||
388ac098 | 202 | directory_nbytes = STRING_BYTES (XSTRING (directory)); |
c81a9bdc | 203 | re_match_object = Qt; |
14d55bce | 204 | |
96d64004 AS |
205 | /* Decide whether we need to add a directory separator. */ |
206 | #ifndef VMS | |
388ac098 GM |
207 | if (directory_nbytes == 0 |
208 | || !IS_ANY_SEP (XSTRING (directory)->data[directory_nbytes - 1])) | |
96d64004 | 209 | needsep = 1; |
e540cbed | 210 | #endif /* not VMS */ |
96d64004 | 211 | |
8e42f043 | 212 | /* Loop reading blocks until EOF or error. */ |
f69f9da1 | 213 | for (;;) |
14d55bce | 214 | { |
f69f9da1 GM |
215 | errno = 0; |
216 | dp = readdir (d); | |
217 | ||
218 | #ifdef EAGAIN | |
219 | if (dp == NULL && errno == EAGAIN) | |
220 | continue; | |
221 | #endif | |
222 | ||
223 | if (dp == NULL) | |
224 | break; | |
225 | ||
128ecc89 | 226 | if (DIRENTRY_NONEMPTY (dp)) |
14d55bce | 227 | { |
e23f810c | 228 | int len; |
2488aba5 | 229 | int wanted = 0; |
388ac098 GM |
230 | Lisp_Object name, finalname; |
231 | struct gcpro gcpro1, gcpro2; | |
e23f810c KH |
232 | |
233 | len = NAMLEN (dp); | |
9ad4f3e5 | 234 | name = finalname = make_unibyte_string (dp->d_name, len); |
388ac098 GM |
235 | GCPRO2 (finalname, name); |
236 | ||
237 | /* Note: ENCODE_FILE can GC; it should protect its argument, | |
238 | though. */ | |
239 | name = DECODE_FILE (name); | |
e23f810c KH |
240 | len = STRING_BYTES (XSTRING (name)); |
241 | ||
2488aba5 AI |
242 | /* Now that we have unwind_protect in place, we might as well |
243 | allow matching to be interrupted. */ | |
244 | immediate_quit = 1; | |
245 | QUIT; | |
246 | ||
265a9e55 | 247 | if (NILP (match) |
e23f810c | 248 | || (0 <= re_search (bufp, XSTRING (name)->data, len, 0, len, 0))) |
388ac098 | 249 | wanted = 1; |
2488aba5 AI |
250 | |
251 | immediate_quit = 0; | |
252 | ||
253 | if (wanted) | |
14d55bce | 254 | { |
265a9e55 | 255 | if (!NILP (full)) |
14d55bce | 256 | { |
e23f810c | 257 | Lisp_Object fullname; |
388ac098 GM |
258 | int nbytes = len + directory_nbytes + needsep; |
259 | int nchars; | |
5617588f | 260 | |
388ac098 | 261 | fullname = make_uninit_multibyte_string (nbytes, nbytes); |
e23f810c | 262 | bcopy (XSTRING (directory)->data, XSTRING (fullname)->data, |
388ac098 GM |
263 | directory_nbytes); |
264 | ||
5617588f | 265 | if (needsep) |
cb154426 | 266 | XSTRING (fullname)->data[directory_nbytes] = DIRECTORY_SEP; |
388ac098 | 267 | |
e23f810c | 268 | bcopy (XSTRING (name)->data, |
388ac098 GM |
269 | XSTRING (fullname)->data + directory_nbytes + needsep, |
270 | len); | |
271 | ||
272 | nchars = chars_in_text (XSTRING (fullname)->data, nbytes); | |
273 | ||
274 | /* Some bug somewhere. */ | |
275 | if (nchars > nbytes) | |
276 | abort (); | |
277 | ||
e23f810c | 278 | XSTRING (fullname)->size = nchars; |
388ac098 | 279 | if (nchars == nbytes) |
e23f810c | 280 | SET_STRING_BYTES (XSTRING (fullname), -1); |
388ac098 | 281 | |
4424b255 GV |
282 | finalname = fullname; |
283 | } | |
aab9c564 KH |
284 | else |
285 | finalname = name; | |
4424b255 GV |
286 | |
287 | if (attrs) | |
288 | { | |
289 | /* Construct an expanded filename for the directory entry. | |
290 | Use the decoded names for input to Ffile_attributes. */ | |
388ac098 GM |
291 | Lisp_Object decoded_fullname, fileattrs; |
292 | struct gcpro gcpro1, gcpro2; | |
293 | ||
294 | decoded_fullname = fileattrs = Qnil; | |
295 | GCPRO2 (decoded_fullname, fileattrs); | |
4424b255 | 296 | |
388ac098 | 297 | /* Both Fexpand_file_name and Ffile_attributes can GC. */ |
4424b255 GV |
298 | decoded_fullname = Fexpand_file_name (name, directory); |
299 | fileattrs = Ffile_attributes (decoded_fullname); | |
300 | ||
301 | list = Fcons (Fcons (finalname, fileattrs), list); | |
388ac098 | 302 | UNGCPRO; |
4424b255 GV |
303 | } |
304 | else | |
388ac098 | 305 | list = Fcons (finalname, list); |
14d55bce | 306 | } |
388ac098 GM |
307 | |
308 | UNGCPRO; | |
14d55bce RS |
309 | } |
310 | } | |
2488aba5 | 311 | |
8e42f043 | 312 | retry_p = 0; |
8e42f043 GM |
313 | #ifdef EINTR |
314 | retry_p |= errno == EINTR; | |
315 | #endif | |
316 | ||
14d55bce | 317 | closedir (d); |
2488aba5 AI |
318 | |
319 | /* Discard the unwind protect. */ | |
320 | specpdl_ptr = specpdl + count; | |
321 | ||
8e42f043 | 322 | if (retry_p) |
76846b31 GM |
323 | { |
324 | list = Qnil; | |
325 | goto retry; | |
326 | } | |
8e42f043 | 327 | |
388ac098 GM |
328 | if (NILP (nosort)) |
329 | list = Fsort (Fnreverse (list), | |
330 | attrs ? Qfile_attributes_lessp : Qstring_lessp); | |
331 | ||
332 | RETURN_UNGCPRO (list); | |
14d55bce | 333 | } |
4424b255 GV |
334 | |
335 | ||
336 | DEFUN ("directory-files", Fdirectory_files, Sdirectory_files, 1, 4, 0, | |
337 | "Return a list of names of files in DIRECTORY.\n\ | |
338 | There are three optional arguments:\n\ | |
339 | If FULL is non-nil, return absolute file names. Otherwise return names\n\ | |
340 | that are relative to the specified directory.\n\ | |
341 | If MATCH is non-nil, mention only file names that match the regexp MATCH.\n\ | |
342 | If NOSORT is non-nil, the list is not sorted--its order is unpredictable.\n\ | |
343 | NOSORT is useful if you plan to sort the result yourself.") | |
344 | (directory, full, match, nosort) | |
345 | Lisp_Object directory, full, match, nosort; | |
346 | { | |
347 | Lisp_Object handler; | |
348 | ||
349 | /* If the file name has special constructs in it, | |
350 | call the corresponding file handler. */ | |
351 | handler = Ffind_file_name_handler (directory, Qdirectory_files); | |
352 | if (!NILP (handler)) | |
353 | { | |
354 | Lisp_Object args[6]; | |
355 | ||
356 | args[0] = handler; | |
357 | args[1] = Qdirectory_files; | |
358 | args[2] = directory; | |
359 | args[3] = full; | |
360 | args[4] = match; | |
361 | args[5] = nosort; | |
362 | return Ffuncall (6, args); | |
363 | } | |
364 | ||
365 | return directory_files_internal (directory, full, match, nosort, 0); | |
366 | } | |
367 | ||
368 | DEFUN ("directory-files-and-attributes", Fdirectory_files_and_attributes, Sdirectory_files_and_attributes, 1, 4, 0, | |
369 | "Return a list of names of files and their attributes in DIRECTORY.\n\ | |
370 | There are three optional arguments:\n\ | |
371 | If FULL is non-nil, return absolute file names. Otherwise return names\n\ | |
372 | that are relative to the specified directory.\n\ | |
373 | If MATCH is non-nil, mention only file names that match the regexp MATCH.\n\ | |
374 | If NOSORT is non-nil, the list is not sorted--its order is unpredictable.\n\ | |
375 | NOSORT is useful if you plan to sort the result yourself.") | |
376 | (directory, full, match, nosort) | |
377 | Lisp_Object directory, full, match, nosort; | |
378 | { | |
379 | Lisp_Object handler; | |
380 | ||
381 | /* If the file name has special constructs in it, | |
382 | call the corresponding file handler. */ | |
383 | handler = Ffind_file_name_handler (directory, Qdirectory_files_and_attributes); | |
384 | if (!NILP (handler)) | |
385 | { | |
386 | Lisp_Object args[6]; | |
387 | ||
388 | args[0] = handler; | |
389 | args[1] = Qdirectory_files_and_attributes; | |
390 | args[2] = directory; | |
391 | args[3] = full; | |
392 | args[4] = match; | |
393 | args[5] = nosort; | |
394 | return Ffuncall (6, args); | |
395 | } | |
396 | ||
397 | return directory_files_internal (directory, full, match, nosort, 1); | |
398 | } | |
399 | ||
14d55bce RS |
400 | \f |
401 | Lisp_Object file_name_completion (); | |
402 | ||
403 | DEFUN ("file-name-completion", Ffile_name_completion, Sfile_name_completion, | |
404 | 2, 2, 0, | |
23bd240f | 405 | "Complete file name FILE in directory DIRECTORY.\n\ |
14d55bce | 406 | Returns the longest string\n\ |
7b6540dd | 407 | common to all file names in DIRECTORY that start with FILE.\n\ |
14d55bce RS |
408 | If there is only one and FILE matches it exactly, returns t.\n\ |
409 | Returns nil if DIR contains no name starting with FILE.") | |
23bd240f EN |
410 | (file, directory) |
411 | Lisp_Object file, directory; | |
14d55bce | 412 | { |
32f4334d | 413 | Lisp_Object handler; |
32f4334d | 414 | |
8436e231 | 415 | /* If the directory name has special constructs in it, |
32f4334d | 416 | call the corresponding file handler. */ |
23bd240f | 417 | handler = Ffind_file_name_handler (directory, Qfile_name_completion); |
32f4334d | 418 | if (!NILP (handler)) |
23bd240f | 419 | return call3 (handler, Qfile_name_completion, file, directory); |
32f4334d | 420 | |
8436e231 RS |
421 | /* If the file name has special constructs in it, |
422 | call the corresponding file handler. */ | |
423 | handler = Ffind_file_name_handler (file, Qfile_name_completion); | |
424 | if (!NILP (handler)) | |
23bd240f | 425 | return call3 (handler, Qfile_name_completion, file, directory); |
8436e231 | 426 | |
23bd240f | 427 | return file_name_completion (file, directory, 0, 0); |
14d55bce RS |
428 | } |
429 | ||
430 | DEFUN ("file-name-all-completions", Ffile_name_all_completions, | |
431 | Sfile_name_all_completions, 2, 2, 0, | |
23bd240f EN |
432 | "Return a list of all completions of file name FILE in directory DIRECTORY.\n\ |
433 | These are all file names in directory DIRECTORY which begin with FILE.") | |
434 | (file, directory) | |
435 | Lisp_Object file, directory; | |
14d55bce | 436 | { |
32f4334d RS |
437 | Lisp_Object handler; |
438 | ||
8436e231 | 439 | /* If the directory name has special constructs in it, |
32f4334d | 440 | call the corresponding file handler. */ |
23bd240f | 441 | handler = Ffind_file_name_handler (directory, Qfile_name_all_completions); |
32f4334d | 442 | if (!NILP (handler)) |
23bd240f | 443 | return call3 (handler, Qfile_name_all_completions, file, directory); |
32f4334d | 444 | |
8436e231 RS |
445 | /* If the file name has special constructs in it, |
446 | call the corresponding file handler. */ | |
447 | handler = Ffind_file_name_handler (file, Qfile_name_all_completions); | |
448 | if (!NILP (handler)) | |
23bd240f | 449 | return call3 (handler, Qfile_name_all_completions, file, directory); |
8436e231 | 450 | |
23bd240f | 451 | return file_name_completion (file, directory, 1, 0); |
14d55bce RS |
452 | } |
453 | ||
dfcf069d AS |
454 | static int file_name_completion_stat (); |
455 | ||
14d55bce RS |
456 | Lisp_Object |
457 | file_name_completion (file, dirname, all_flag, ver_flag) | |
458 | Lisp_Object file, dirname; | |
459 | int all_flag, ver_flag; | |
460 | { | |
461 | DIR *d; | |
6bbd7a29 | 462 | int bestmatchsize = 0, skip; |
14d55bce RS |
463 | register int compare, matchsize; |
464 | unsigned char *p1, *p2; | |
465 | int matchcount = 0; | |
466 | Lisp_Object bestmatch, tem, elt, name; | |
24c2a54f RS |
467 | Lisp_Object encoded_file; |
468 | Lisp_Object encoded_dir; | |
14d55bce RS |
469 | struct stat st; |
470 | int directoryp; | |
471 | int passcount; | |
472 | int count = specpdl_ptr - specpdl; | |
24c2a54f | 473 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5; |
3fcc88cc | 474 | |
6bbd7a29 GM |
475 | elt = Qnil; |
476 | ||
14d55bce RS |
477 | #ifdef VMS |
478 | extern DIRENTRY * readdirver (); | |
479 | ||
480 | DIRENTRY *((* readfunc) ()); | |
481 | ||
482 | /* Filename completion on VMS ignores case, since VMS filesys does. */ | |
483 | specbind (Qcompletion_ignore_case, Qt); | |
484 | ||
485 | readfunc = readdir; | |
486 | if (ver_flag) | |
487 | readfunc = readdirver; | |
488 | file = Fupcase (file); | |
489 | #else /* not VMS */ | |
490 | CHECK_STRING (file, 0); | |
491 | #endif /* not VMS */ | |
492 | ||
128ecc89 RS |
493 | #ifdef FILE_SYSTEM_CASE |
494 | file = FILE_SYSTEM_CASE (file); | |
495 | #endif | |
14d55bce | 496 | bestmatch = Qnil; |
24c2a54f RS |
497 | encoded_file = encoded_dir = Qnil; |
498 | GCPRO5 (file, dirname, bestmatch, encoded_file, encoded_dir); | |
3fcc88cc | 499 | dirname = Fexpand_file_name (dirname, Qnil); |
14d55bce | 500 | |
24c2a54f RS |
501 | /* Do completion on the encoded file name |
502 | because the other names in the directory are (we presume) | |
503 | encoded likewise. We decode the completed string at the end. */ | |
504 | encoded_file = ENCODE_FILE (file); | |
505 | ||
506 | encoded_dir = ENCODE_FILE (dirname); | |
507 | ||
14d55bce RS |
508 | /* With passcount = 0, ignore files that end in an ignored extension. |
509 | If nothing found then try again with passcount = 1, don't ignore them. | |
510 | If looking for all completions, start with passcount = 1, | |
511 | so always take even the ignored ones. | |
512 | ||
513 | ** It would not actually be helpful to the user to ignore any possible | |
514 | completions when making a list of them.** */ | |
515 | ||
265a9e55 | 516 | for (passcount = !!all_flag; NILP (bestmatch) && passcount < 2; passcount++) |
14d55bce | 517 | { |
24c2a54f RS |
518 | d = opendir (XSTRING (Fdirectory_file_name (encoded_dir))->data); |
519 | if (!d) | |
14d55bce RS |
520 | report_file_error ("Opening directory", Fcons (dirname, Qnil)); |
521 | ||
522 | /* Loop reading blocks */ | |
523 | /* (att3b compiler bug requires do a null comparison this way) */ | |
524 | while (1) | |
525 | { | |
526 | DIRENTRY *dp; | |
527 | int len; | |
528 | ||
529 | #ifdef VMS | |
530 | dp = (*readfunc) (d); | |
531 | #else | |
532 | dp = readdir (d); | |
533 | #endif | |
534 | if (!dp) break; | |
535 | ||
536 | len = NAMLEN (dp); | |
537 | ||
265a9e55 | 538 | if (!NILP (Vquit_flag) && NILP (Vinhibit_quit)) |
14d55bce | 539 | goto quit; |
128ecc89 | 540 | if (! DIRENTRY_NONEMPTY (dp) |
24c2a54f RS |
541 | || len < XSTRING (encoded_file)->size |
542 | || 0 <= scmp (dp->d_name, XSTRING (encoded_file)->data, | |
543 | XSTRING (encoded_file)->size)) | |
14d55bce RS |
544 | continue; |
545 | ||
24c2a54f | 546 | if (file_name_completion_stat (encoded_dir, dp, &st) < 0) |
14d55bce RS |
547 | continue; |
548 | ||
549 | directoryp = ((st.st_mode & S_IFMT) == S_IFDIR); | |
550 | tem = Qnil; | |
ad456ad4 RS |
551 | if (directoryp) |
552 | { | |
553 | #ifndef TRIVIAL_DIRECTORY_ENTRY | |
554 | #define TRIVIAL_DIRECTORY_ENTRY(n) (!strcmp (n, ".") || !strcmp (n, "..")) | |
555 | #endif | |
556 | /* "." and ".." are never interesting as completions, but are | |
557 | actually in the way in a directory contains only one file. */ | |
558 | if (!passcount && TRIVIAL_DIRECTORY_ENTRY (dp->d_name)) | |
559 | continue; | |
560 | } | |
561 | else | |
14d55bce RS |
562 | { |
563 | /* Compare extensions-to-be-ignored against end of this file name */ | |
564 | /* if name is not an exact match against specified string */ | |
24c2a54f | 565 | if (!passcount && len > XSTRING (encoded_file)->size) |
14d55bce RS |
566 | /* and exit this for loop if a match is found */ |
567 | for (tem = Vcompletion_ignored_extensions; | |
70949dac | 568 | CONSP (tem); tem = XCDR (tem)) |
14d55bce | 569 | { |
70949dac | 570 | elt = XCAR (tem); |
88cf1852 | 571 | if (!STRINGP (elt)) continue; |
14d55bce RS |
572 | skip = len - XSTRING (elt)->size; |
573 | if (skip < 0) continue; | |
574 | ||
575 | if (0 <= scmp (dp->d_name + skip, | |
576 | XSTRING (elt)->data, | |
577 | XSTRING (elt)->size)) | |
578 | continue; | |
579 | break; | |
580 | } | |
581 | } | |
582 | ||
f676868d KH |
583 | /* If an ignored-extensions match was found, |
584 | don't process this name as a completion. */ | |
585 | if (!passcount && CONSP (tem)) | |
586 | continue; | |
587 | ||
588 | if (!passcount) | |
14d55bce | 589 | { |
f676868d KH |
590 | Lisp_Object regexps; |
591 | Lisp_Object zero; | |
617b3bfe | 592 | XSETFASTINT (zero, 0); |
f676868d KH |
593 | |
594 | /* Ignore this element if it fails to match all the regexps. */ | |
595 | for (regexps = Vcompletion_regexp_list; CONSP (regexps); | |
70949dac | 596 | regexps = XCDR (regexps)) |
f676868d | 597 | { |
1c56232f EZ |
598 | tem = Fstring_match (XCAR (regexps), |
599 | make_string (dp->d_name, len), zero); | |
f676868d KH |
600 | if (NILP (tem)) |
601 | break; | |
602 | } | |
603 | if (CONSP (regexps)) | |
604 | continue; | |
605 | } | |
14d55bce | 606 | |
f676868d | 607 | /* Update computation of how much all possible completions match */ |
14d55bce | 608 | |
f676868d KH |
609 | matchcount++; |
610 | ||
611 | if (all_flag || NILP (bestmatch)) | |
612 | { | |
613 | /* This is a possible completion */ | |
614 | if (directoryp) | |
14d55bce | 615 | { |
f676868d KH |
616 | /* This completion is a directory; make it end with '/' */ |
617 | name = Ffile_name_as_directory (make_string (dp->d_name, len)); | |
618 | } | |
619 | else | |
620 | name = make_string (dp->d_name, len); | |
621 | if (all_flag) | |
622 | { | |
bd33479f | 623 | name = DECODE_FILE (name); |
f676868d | 624 | bestmatch = Fcons (name, bestmatch); |
14d55bce RS |
625 | } |
626 | else | |
627 | { | |
f676868d KH |
628 | bestmatch = name; |
629 | bestmatchsize = XSTRING (name)->size; | |
630 | } | |
631 | } | |
632 | else | |
633 | { | |
634 | compare = min (bestmatchsize, len); | |
635 | p1 = XSTRING (bestmatch)->data; | |
636 | p2 = (unsigned char *) dp->d_name; | |
637 | matchsize = scmp(p1, p2, compare); | |
638 | if (matchsize < 0) | |
639 | matchsize = compare; | |
640 | if (completion_ignore_case) | |
641 | { | |
642 | /* If this is an exact match except for case, | |
643 | use it as the best match rather than one that is not | |
644 | an exact match. This way, we get the case pattern | |
645 | of the actual match. */ | |
f5ec5d3d RS |
646 | /* This tests that the current file is an exact match |
647 | but BESTMATCH is not (it is too long). */ | |
f676868d KH |
648 | if ((matchsize == len |
649 | && matchsize + !!directoryp | |
650 | < XSTRING (bestmatch)->size) | |
651 | || | |
652 | /* If there is no exact match ignoring case, | |
653 | prefer a match that does not change the case | |
654 | of the input. */ | |
f5ec5d3d RS |
655 | /* If there is more than one exact match aside from |
656 | case, and one of them is exact including case, | |
657 | prefer that one. */ | |
658 | /* This == checks that, of current file and BESTMATCH, | |
659 | either both or neither are exact. */ | |
f676868d KH |
660 | (((matchsize == len) |
661 | == | |
662 | (matchsize + !!directoryp | |
663 | == XSTRING (bestmatch)->size)) | |
24c2a54f RS |
664 | && !bcmp (p2, XSTRING (encoded_file)->data, XSTRING (encoded_file)->size) |
665 | && bcmp (p1, XSTRING (encoded_file)->data, XSTRING (encoded_file)->size))) | |
97e98a56 | 666 | { |
f676868d KH |
667 | bestmatch = make_string (dp->d_name, len); |
668 | if (directoryp) | |
669 | bestmatch = Ffile_name_as_directory (bestmatch); | |
97e98a56 | 670 | } |
14d55bce | 671 | } |
f676868d KH |
672 | |
673 | /* If this dirname all matches, see if implicit following | |
674 | slash does too. */ | |
675 | if (directoryp | |
676 | && compare == matchsize | |
677 | && bestmatchsize > matchsize | |
0b39d75d | 678 | && IS_ANY_SEP (p1[matchsize])) |
f676868d KH |
679 | matchsize++; |
680 | bestmatchsize = matchsize; | |
14d55bce RS |
681 | } |
682 | } | |
683 | closedir (d); | |
684 | } | |
685 | ||
3fcc88cc RS |
686 | UNGCPRO; |
687 | bestmatch = unbind_to (count, bestmatch); | |
14d55bce | 688 | |
265a9e55 | 689 | if (all_flag || NILP (bestmatch)) |
24c2a54f | 690 | { |
bd33479f KH |
691 | if (STRINGP (bestmatch)) |
692 | bestmatch = DECODE_FILE (bestmatch); | |
24c2a54f RS |
693 | return bestmatch; |
694 | } | |
14d55bce RS |
695 | if (matchcount == 1 && bestmatchsize == XSTRING (file)->size) |
696 | return Qt; | |
24c2a54f RS |
697 | bestmatch = Fsubstring (bestmatch, make_number (0), |
698 | make_number (bestmatchsize)); | |
699 | /* Now that we got the right initial segment of BESTMATCH, | |
700 | decode it from the coding system in use. */ | |
bd33479f | 701 | bestmatch = DECODE_FILE (bestmatch); |
24c2a54f RS |
702 | return bestmatch; |
703 | ||
14d55bce RS |
704 | quit: |
705 | if (d) closedir (d); | |
706 | Vquit_flag = Qnil; | |
707 | return Fsignal (Qquit, Qnil); | |
708 | } | |
709 | ||
dfcf069d | 710 | static int |
14d55bce RS |
711 | file_name_completion_stat (dirname, dp, st_addr) |
712 | Lisp_Object dirname; | |
713 | DIRENTRY *dp; | |
714 | struct stat *st_addr; | |
715 | { | |
716 | int len = NAMLEN (dp); | |
717 | int pos = XSTRING (dirname)->size; | |
7e3cf34f | 718 | int value; |
14d55bce RS |
719 | char *fullname = (char *) alloca (len + pos + 2); |
720 | ||
04924ee3 RS |
721 | #ifdef MSDOS |
722 | #if __DJGPP__ > 1 | |
723 | /* Some fields of struct stat are *very* expensive to compute on MS-DOS, | |
724 | but aren't required here. Avoid computing the following fields: | |
725 | st_inode, st_size and st_nlink for directories, and the execute bits | |
726 | in st_mode for non-directory files with non-standard extensions. */ | |
727 | ||
728 | unsigned short save_djstat_flags = _djstat_flags; | |
729 | ||
730 | _djstat_flags = _STAT_INODE | _STAT_EXEC_MAGIC | _STAT_DIRSIZE; | |
731 | #endif /* __DJGPP__ > 1 */ | |
732 | #endif /* MSDOS */ | |
733 | ||
14d55bce RS |
734 | bcopy (XSTRING (dirname)->data, fullname, pos); |
735 | #ifndef VMS | |
0b39d75d RS |
736 | if (!IS_DIRECTORY_SEP (fullname[pos - 1])) |
737 | fullname[pos++] = DIRECTORY_SEP; | |
14d55bce RS |
738 | #endif |
739 | ||
740 | bcopy (dp->d_name, fullname + pos, len); | |
741 | fullname[pos + len] = 0; | |
742 | ||
a889bd0e | 743 | #ifdef S_IFLNK |
7e3cf34f RS |
744 | /* We want to return success if a link points to a nonexistent file, |
745 | but we want to return the status for what the link points to, | |
746 | in case it is a directory. */ | |
747 | value = lstat (fullname, st_addr); | |
748 | stat (fullname, st_addr); | |
749 | return value; | |
a889bd0e | 750 | #else |
04924ee3 RS |
751 | value = stat (fullname, st_addr); |
752 | #ifdef MSDOS | |
753 | #if __DJGPP__ > 1 | |
754 | _djstat_flags = save_djstat_flags; | |
755 | #endif /* __DJGPP__ > 1 */ | |
756 | #endif /* MSDOS */ | |
757 | return value; | |
758 | #endif /* S_IFLNK */ | |
14d55bce RS |
759 | } |
760 | \f | |
3ed991aa RS |
761 | #ifdef VMS |
762 | ||
763 | DEFUN ("file-name-all-versions", Ffile_name_all_versions, | |
764 | Sfile_name_all_versions, 2, 2, 0, | |
23bd240f EN |
765 | "Return a list of all versions of file name FILE in directory DIRECTORY.") |
766 | (file, directory) | |
767 | Lisp_Object file, directory; | |
3ed991aa | 768 | { |
23bd240f | 769 | return file_name_completion (file, directory, 1, 1); |
3ed991aa RS |
770 | } |
771 | ||
772 | DEFUN ("file-version-limit", Ffile_version_limit, Sfile_version_limit, 1, 1, 0, | |
773 | "Return the maximum number of versions allowed for FILE.\n\ | |
774 | Returns nil if the file cannot be opened or if there is no version limit.") | |
775 | (filename) | |
776 | Lisp_Object filename; | |
777 | { | |
778 | Lisp_Object retval; | |
779 | struct FAB fab; | |
780 | struct RAB rab; | |
781 | struct XABFHC xabfhc; | |
782 | int status; | |
783 | ||
784 | filename = Fexpand_file_name (filename, Qnil); | |
785 | fab = cc$rms_fab; | |
786 | xabfhc = cc$rms_xabfhc; | |
787 | fab.fab$l_fna = XSTRING (filename)->data; | |
788 | fab.fab$b_fns = strlen (fab.fab$l_fna); | |
789 | fab.fab$l_xab = (char *) &xabfhc; | |
790 | status = sys$open (&fab, 0, 0); | |
791 | if (status != RMS$_NORMAL) /* Probably non-existent file */ | |
792 | return Qnil; | |
793 | sys$close (&fab, 0, 0); | |
794 | if (xabfhc.xab$w_verlimit == 32767) | |
795 | return Qnil; /* No version limit */ | |
796 | else | |
797 | return make_number (xabfhc.xab$w_verlimit); | |
798 | } | |
799 | ||
800 | #endif /* VMS */ | |
801 | \f | |
14d55bce RS |
802 | Lisp_Object |
803 | make_time (time) | |
e5124be7 | 804 | time_t time; |
14d55bce RS |
805 | { |
806 | return Fcons (make_number (time >> 16), | |
807 | Fcons (make_number (time & 0177777), Qnil)); | |
808 | } | |
809 | ||
810 | DEFUN ("file-attributes", Ffile_attributes, Sfile_attributes, 1, 1, 0, | |
811 | "Return a list of attributes of file FILENAME.\n\ | |
812 | Value is nil if specified file cannot be opened.\n\ | |
813 | Otherwise, list elements are:\n\ | |
814 | 0. t for directory, string (name linked to) for symbolic link, or nil.\n\ | |
815 | 1. Number of links to file.\n\ | |
816 | 2. File uid.\n\ | |
817 | 3. File gid.\n\ | |
818 | 4. Last access time, as a list of two integers.\n\ | |
819 | First integer has high-order 16 bits of time, second has low 16 bits.\n\ | |
820 | 5. Last modification time, likewise.\n\ | |
821 | 6. Last status change time, likewise.\n\ | |
cb1846b4 EZ |
822 | 7. Size in bytes.\n\ |
823 | This is a floating point number if the size is too large for an integer.\n\ | |
14d55bce RS |
824 | 8. File modes, as a string of ten letters or dashes as in ls -l.\n\ |
825 | 9. t iff file's gid would change if file were deleted and recreated.\n\ | |
cb1846b4 | 826 | 10. inode number. If inode number is larger than the Emacs integer,\n\ |
6d4e6528 RS |
827 | this is a cons cell containing two integers: first the high part,\n\ |
828 | then the low 16 bits.\n\ | |
61984904 EZ |
829 | 11. Device number. If it is larger than the Emacs integer, this is\n\ |
830 | a cons cell, similar to the inode number.\n\ | |
14d55bce | 831 | \n\ |
ccbcf979 | 832 | If file does not exist, returns nil.") |
14d55bce RS |
833 | (filename) |
834 | Lisp_Object filename; | |
835 | { | |
836 | Lisp_Object values[12]; | |
24c2a54f | 837 | Lisp_Object encoded; |
14d55bce | 838 | struct stat s; |
0a974c85 | 839 | #if defined (BSD4_2) || defined (BSD4_3) |
b3edfc9b | 840 | Lisp_Object dirname; |
14d55bce | 841 | struct stat sdir; |
b3edfc9b | 842 | #endif |
14d55bce | 843 | char modes[10]; |
32f4334d | 844 | Lisp_Object handler; |
14d55bce RS |
845 | |
846 | filename = Fexpand_file_name (filename, Qnil); | |
32f4334d RS |
847 | |
848 | /* If the file name has special constructs in it, | |
849 | call the corresponding file handler. */ | |
a617e913 | 850 | handler = Ffind_file_name_handler (filename, Qfile_attributes); |
32f4334d RS |
851 | if (!NILP (handler)) |
852 | return call2 (handler, Qfile_attributes, filename); | |
853 | ||
24c2a54f RS |
854 | encoded = ENCODE_FILE (filename); |
855 | ||
856 | if (lstat (XSTRING (encoded)->data, &s) < 0) | |
14d55bce RS |
857 | return Qnil; |
858 | ||
859 | switch (s.st_mode & S_IFMT) | |
860 | { | |
861 | default: | |
862 | values[0] = Qnil; break; | |
863 | case S_IFDIR: | |
864 | values[0] = Qt; break; | |
865 | #ifdef S_IFLNK | |
866 | case S_IFLNK: | |
867 | values[0] = Ffile_symlink_p (filename); break; | |
868 | #endif | |
869 | } | |
870 | values[1] = make_number (s.st_nlink); | |
871 | values[2] = make_number (s.st_uid); | |
872 | values[3] = make_number (s.st_gid); | |
873 | values[4] = make_time (s.st_atime); | |
874 | values[5] = make_time (s.st_mtime); | |
875 | values[6] = make_time (s.st_ctime); | |
68c45bf0 | 876 | values[7] = make_number (s.st_size); |
cb1846b4 | 877 | /* If the size is out of range for an integer, return a float. */ |
60fc6069 | 878 | if (XINT (values[7]) != s.st_size) |
cb1846b4 | 879 | values[7] = make_float ((double)s.st_size); |
14d55bce RS |
880 | filemodestring (&s, modes); |
881 | values[8] = make_string (modes, 10); | |
0a974c85 | 882 | #if defined (BSD4_2) || defined (BSD4_3) /* file gid will be dir gid */ |
14d55bce | 883 | dirname = Ffile_name_directory (filename); |
24c2a54f RS |
884 | if (! NILP (dirname)) |
885 | encoded = ENCODE_FILE (dirname); | |
886 | if (! NILP (dirname) && stat (XSTRING (encoded)->data, &sdir) == 0) | |
14d55bce RS |
887 | values[9] = (sdir.st_gid != s.st_gid) ? Qt : Qnil; |
888 | else /* if we can't tell, assume worst */ | |
889 | values[9] = Qt; | |
890 | #else /* file gid will be egid */ | |
891 | values[9] = (s.st_gid != getegid ()) ? Qt : Qnil; | |
892 | #endif /* BSD4_2 (or BSD4_3) */ | |
ce4200f6 RS |
893 | /* Cast -1 to avoid warning if int is not as wide as VALBITS. */ |
894 | if (s.st_ino & (((EMACS_INT) (-1)) << VALBITS)) | |
4c637faa RS |
895 | /* To allow inode numbers larger than VALBITS, separate the bottom |
896 | 16 bits. */ | |
897 | values[10] = Fcons (make_number (s.st_ino >> 16), | |
898 | make_number (s.st_ino & 0xffff)); | |
899 | else | |
900 | /* But keep the most common cases as integers. */ | |
901 | values[10] = make_number (s.st_ino); | |
68c45bf0 PE |
902 | |
903 | /* Likewise for device. */ | |
904 | if (s.st_dev & (((EMACS_INT) (-1)) << VALBITS)) | |
905 | values[11] = Fcons (make_number (s.st_dev >> 16), | |
906 | make_number (s.st_dev & 0xffff)); | |
907 | else | |
908 | values[11] = make_number (s.st_dev); | |
909 | ||
14d55bce RS |
910 | return Flist (sizeof(values) / sizeof(values[0]), values); |
911 | } | |
4424b255 GV |
912 | |
913 | DEFUN ("file-attributes-lessp", Ffile_attributes_lessp, Sfile_attributes_lessp, 2, 2, 0, | |
914 | "Return t if first arg file attributes list is less than second.\n\ | |
915 | Comparison is in lexicographic order and case is significant.") | |
916 | (f1, f2) | |
917 | Lisp_Object f1, f2; | |
918 | { | |
919 | return Fstring_lessp (Fcar (f1), Fcar (f2)); | |
920 | } | |
14d55bce | 921 | \f |
dfcf069d | 922 | void |
14d55bce RS |
923 | syms_of_dired () |
924 | { | |
32f4334d | 925 | Qdirectory_files = intern ("directory-files"); |
4424b255 | 926 | Qdirectory_files_and_attributes = intern ("directory-files-and-attributes"); |
32f4334d RS |
927 | Qfile_name_completion = intern ("file-name-completion"); |
928 | Qfile_name_all_completions = intern ("file-name-all-completions"); | |
434e6714 | 929 | Qfile_attributes = intern ("file-attributes"); |
4424b255 | 930 | Qfile_attributes_lessp = intern ("file-attributes-lessp"); |
32f4334d | 931 | |
a2d3836c | 932 | staticpro (&Qdirectory_files); |
4424b255 | 933 | staticpro (&Qdirectory_files_and_attributes); |
a2d3836c EN |
934 | staticpro (&Qfile_name_completion); |
935 | staticpro (&Qfile_name_all_completions); | |
936 | staticpro (&Qfile_attributes); | |
4424b255 | 937 | staticpro (&Qfile_attributes_lessp); |
a2d3836c | 938 | |
14d55bce | 939 | defsubr (&Sdirectory_files); |
4424b255 | 940 | defsubr (&Sdirectory_files_and_attributes); |
14d55bce RS |
941 | defsubr (&Sfile_name_completion); |
942 | #ifdef VMS | |
943 | defsubr (&Sfile_name_all_versions); | |
3ed991aa | 944 | defsubr (&Sfile_version_limit); |
14d55bce RS |
945 | #endif /* VMS */ |
946 | defsubr (&Sfile_name_all_completions); | |
947 | defsubr (&Sfile_attributes); | |
4424b255 | 948 | defsubr (&Sfile_attributes_lessp); |
14d55bce RS |
949 | |
950 | #ifdef VMS | |
951 | Qcompletion_ignore_case = intern ("completion-ignore-case"); | |
952 | staticpro (&Qcompletion_ignore_case); | |
953 | #endif /* VMS */ | |
954 | ||
955 | DEFVAR_LISP ("completion-ignored-extensions", &Vcompletion_ignored_extensions, | |
956 | "*Completion ignores filenames ending in any string in this list.\n\ | |
957 | This variable does not affect lists of possible completions,\n\ | |
958 | but does affect the commands that actually do completions."); | |
959 | Vcompletion_ignored_extensions = Qnil; | |
960 | } |