Commit | Line | Data |
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14d55bce | 1 | /* Lisp functions for making directory listings. |
68c45bf0 | 2 | Copyright (C) 1985, 1986, 1993, 1994, 1999 Free Software Foundation, Inc. |
14d55bce RS |
3 | |
4 | This file is part of GNU Emacs. | |
5 | ||
6 | GNU Emacs is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
7c938215 | 8 | the Free Software Foundation; either version 2, or (at your option) |
14d55bce RS |
9 | any later version. |
10 | ||
11 | GNU Emacs is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GNU Emacs; see the file COPYING. If not, write to | |
3b7ad313 EN |
18 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
19 | Boston, MA 02111-1307, USA. */ | |
14d55bce RS |
20 | |
21 | ||
3964b9a7 RS |
22 | #include <config.h> |
23 | ||
14d55bce RS |
24 | #include <stdio.h> |
25 | #include <sys/types.h> | |
26 | #include <sys/stat.h> | |
27 | ||
68c45bf0 PE |
28 | #include "systime.h" |
29 | ||
3ed991aa RS |
30 | #ifdef VMS |
31 | #include <string.h> | |
32 | #include <rms.h> | |
33 | #include <rmsdef.h> | |
34 | #endif | |
35 | ||
dfcf069d AS |
36 | #ifdef HAVE_UNISTD_H |
37 | #include <unistd.h> | |
38 | #endif | |
39 | ||
d6717cdb JB |
40 | /* The d_nameln member of a struct dirent includes the '\0' character |
41 | on some systems, but not on others. What's worse, you can't tell | |
42 | at compile-time which one it will be, since it really depends on | |
43 | the sort of system providing the filesystem you're reading from, | |
44 | not the system you are running on. Paul Eggert | |
45 | <eggert@bi.twinsun.com> says this occurs when Emacs is running on a | |
46 | SunOS 4.1.2 host, reading a directory that is remote-mounted from a | |
47 | Solaris 2.1 host and is in a native Solaris 2.1 filesystem. | |
48 | ||
49 | Since applying strlen to the name always works, we'll just do that. */ | |
50 | #define NAMLEN(p) strlen (p->d_name) | |
51 | ||
14d55bce RS |
52 | #ifdef SYSV_SYSTEM_DIR |
53 | ||
54 | #include <dirent.h> | |
55 | #define DIRENTRY struct dirent | |
14d55bce | 56 | |
128ecc89 | 57 | #else /* not SYSV_SYSTEM_DIR */ |
14d55bce RS |
58 | |
59 | #ifdef NONSYSTEM_DIR_LIBRARY | |
60 | #include "ndir.h" | |
61 | #else /* not NONSYSTEM_DIR_LIBRARY */ | |
128ecc89 RS |
62 | #ifdef MSDOS |
63 | #include <dirent.h> | |
64 | #else | |
14d55bce | 65 | #include <sys/dir.h> |
128ecc89 | 66 | #endif |
14d55bce RS |
67 | #endif /* not NONSYSTEM_DIR_LIBRARY */ |
68 | ||
851cab13 DL |
69 | #include <sys/stat.h> |
70 | ||
128ecc89 | 71 | #ifndef MSDOS |
14d55bce | 72 | #define DIRENTRY struct direct |
14d55bce RS |
73 | |
74 | extern DIR *opendir (); | |
75 | extern struct direct *readdir (); | |
76 | ||
128ecc89 RS |
77 | #endif /* not MSDOS */ |
78 | #endif /* not SYSV_SYSTEM_DIR */ | |
79 | ||
80 | #ifdef MSDOS | |
81 | #define DIRENTRY_NONEMPTY(p) ((p)->d_name[0] != 0) | |
82 | #else | |
83 | #define DIRENTRY_NONEMPTY(p) ((p)->d_ino) | |
14d55bce RS |
84 | #endif |
85 | ||
14d55bce RS |
86 | #include "lisp.h" |
87 | #include "buffer.h" | |
88 | #include "commands.h" | |
bd33479f KH |
89 | #include "charset.h" |
90 | #include "coding.h" | |
14d55bce | 91 | #include "regex.h" |
14d55bce | 92 | |
e50c66d3 KH |
93 | /* Returns a search buffer, with a fastmap allocated and ready to go. */ |
94 | extern struct re_pattern_buffer *compile_pattern (); | |
c7e466e1 | 95 | |
851cab13 DL |
96 | /* From filemode.c. Can't go in Lisp.h because of `stat'. */ |
97 | extern void filemodestring P_ ((struct stat *, char *)); | |
98 | ||
14d55bce RS |
99 | #define min(a, b) ((a) < (b) ? (a) : (b)) |
100 | ||
101 | /* if system does not have symbolic links, it does not have lstat. | |
102 | In that case, use ordinary stat instead. */ | |
103 | ||
104 | #ifndef S_IFLNK | |
105 | #define lstat stat | |
106 | #endif | |
107 | ||
97e98a56 | 108 | extern int completion_ignore_case; |
f676868d | 109 | extern Lisp_Object Vcompletion_regexp_list; |
bd33479f | 110 | extern Lisp_Object Vfile_name_coding_system, Vdefault_file_name_coding_system; |
ccbcf979 | 111 | |
14d55bce | 112 | Lisp_Object Vcompletion_ignored_extensions; |
14d55bce | 113 | Lisp_Object Qcompletion_ignore_case; |
32f4334d | 114 | Lisp_Object Qdirectory_files; |
4424b255 | 115 | Lisp_Object Qdirectory_files_and_attributes; |
32f4334d RS |
116 | Lisp_Object Qfile_name_completion; |
117 | Lisp_Object Qfile_name_all_completions; | |
434e6714 | 118 | Lisp_Object Qfile_attributes; |
4424b255 | 119 | Lisp_Object Qfile_attributes_lessp; |
14d55bce | 120 | \f |
2488aba5 AI |
121 | |
122 | Lisp_Object | |
123 | directory_files_internal_unwind (dh) | |
124 | Lisp_Object dh; | |
125 | { | |
126 | DIR *d = (DIR *) ((XINT (XCAR (dh)) << 16) + XINT (XCDR (dh))); | |
127 | closedir (d); | |
128 | return Qnil; | |
129 | } | |
130 | ||
4424b255 GV |
131 | /* Function shared by Fdirectory_files and Fdirectory_files_and_attributes. |
132 | When ATTRS is zero, return a list of directory filenames; when | |
133 | non-zero, return a list of directory filenames and their attributes. */ | |
134 | Lisp_Object | |
135 | directory_files_internal (directory, full, match, nosort, attrs) | |
23bd240f | 136 | Lisp_Object directory, full, match, nosort; |
4424b255 | 137 | int attrs; |
14d55bce RS |
138 | { |
139 | DIR *d; | |
388ac098 GM |
140 | int directory_nbytes; |
141 | Lisp_Object list, dirfilename, encoded_directory; | |
6bbd7a29 | 142 | struct re_pattern_buffer *bufp = NULL; |
96d64004 | 143 | int needsep = 0; |
2488aba5 | 144 | int count = specpdl_ptr - specpdl; |
388ac098 | 145 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5; |
8e42f043 GM |
146 | DIRENTRY *dp; |
147 | int retry_p; | |
32f4334d | 148 | |
96d64004 | 149 | /* Because of file name handlers, these functions might call |
6155fae1 | 150 | Ffuncall, and cause a GC. */ |
388ac098 GM |
151 | list = encoded_directory = dirfilename = Qnil; |
152 | GCPRO5 (match, directory, list, dirfilename, encoded_directory); | |
96d64004 | 153 | directory = Fexpand_file_name (directory, Qnil); |
96d64004 | 154 | dirfilename = Fdirectory_file_name (directory); |
6155fae1 | 155 | |
265a9e55 | 156 | if (!NILP (match)) |
14d55bce RS |
157 | { |
158 | CHECK_STRING (match, 3); | |
ebb9e16f JB |
159 | |
160 | /* MATCH might be a flawed regular expression. Rather than | |
8e6208c5 | 161 | catching and signaling our own errors, we just call |
ebb9e16f | 162 | compile_pattern to do the work for us. */ |
c872c6b2 RS |
163 | /* Pass 1 for the MULTIBYTE arg |
164 | because we do make multibyte strings if the contents warrant. */ | |
14d55bce | 165 | #ifdef VMS |
e50c66d3 | 166 | bufp = compile_pattern (match, 0, |
3e937712 | 167 | buffer_defaults.downcase_table, 0, 1); |
14d55bce | 168 | #else |
3e937712 | 169 | bufp = compile_pattern (match, 0, Qnil, 0, 1); |
14d55bce RS |
170 | #endif |
171 | } | |
172 | ||
b3edfc9b | 173 | /* Note: ENCODE_FILE and DECODE_FILE can GC because they can run |
388ac098 GM |
174 | run_pre_post_conversion_on_str which calls Lisp directly and |
175 | indirectly. */ | |
24c2a54f | 176 | dirfilename = ENCODE_FILE (dirfilename); |
24c2a54f RS |
177 | encoded_directory = ENCODE_FILE (directory); |
178 | ||
e50c66d3 | 179 | /* Now *bufp is the compiled form of MATCH; don't call anything |
6155fae1 JB |
180 | which might compile a new regexp until we're done with the loop! */ |
181 | ||
182 | /* Do this opendir after anything which might signal an error; if | |
8e6208c5 | 183 | an error is signaled while the directory stream is open, we |
6155fae1 JB |
184 | have to make sure it gets closed, and setting up an |
185 | unwind_protect to do so would be a pain. */ | |
8e42f043 GM |
186 | retry: |
187 | ||
6155fae1 | 188 | d = opendir (XSTRING (dirfilename)->data); |
388ac098 | 189 | if (d == NULL) |
23bd240f | 190 | report_file_error ("Opening directory", Fcons (directory, Qnil)); |
14d55bce | 191 | |
2488aba5 AI |
192 | /* Unfortunately, we can now invoke expand-file-name and |
193 | file-attributes on filenames, both of which can throw, so we must | |
194 | do a proper unwind-protect. */ | |
195 | record_unwind_protect (directory_files_internal_unwind, | |
196 | Fcons (make_number (((unsigned long) d) >> 16), | |
197 | make_number (((unsigned long) d) & 0xffff))); | |
198 | ||
388ac098 | 199 | directory_nbytes = STRING_BYTES (XSTRING (directory)); |
c81a9bdc | 200 | re_match_object = Qt; |
14d55bce | 201 | |
96d64004 AS |
202 | /* Decide whether we need to add a directory separator. */ |
203 | #ifndef VMS | |
388ac098 GM |
204 | if (directory_nbytes == 0 |
205 | || !IS_ANY_SEP (XSTRING (directory)->data[directory_nbytes - 1])) | |
96d64004 | 206 | needsep = 1; |
e540cbed | 207 | #endif /* not VMS */ |
96d64004 | 208 | |
8e42f043 GM |
209 | /* Loop reading blocks until EOF or error. */ |
210 | while ((dp = readdir (d)) != NULL) | |
14d55bce | 211 | { |
128ecc89 | 212 | if (DIRENTRY_NONEMPTY (dp)) |
14d55bce | 213 | { |
e23f810c | 214 | int len; |
2488aba5 | 215 | int wanted = 0; |
388ac098 GM |
216 | Lisp_Object name, finalname; |
217 | struct gcpro gcpro1, gcpro2; | |
e23f810c KH |
218 | |
219 | len = NAMLEN (dp); | |
388ac098 GM |
220 | name = finalname = make_string (dp->d_name, len); |
221 | GCPRO2 (finalname, name); | |
222 | ||
223 | /* Note: ENCODE_FILE can GC; it should protect its argument, | |
224 | though. */ | |
225 | name = DECODE_FILE (name); | |
e23f810c KH |
226 | len = STRING_BYTES (XSTRING (name)); |
227 | ||
2488aba5 AI |
228 | /* Now that we have unwind_protect in place, we might as well |
229 | allow matching to be interrupted. */ | |
230 | immediate_quit = 1; | |
231 | QUIT; | |
232 | ||
265a9e55 | 233 | if (NILP (match) |
e23f810c | 234 | || (0 <= re_search (bufp, XSTRING (name)->data, len, 0, len, 0))) |
388ac098 | 235 | wanted = 1; |
2488aba5 AI |
236 | |
237 | immediate_quit = 0; | |
238 | ||
239 | if (wanted) | |
14d55bce | 240 | { |
265a9e55 | 241 | if (!NILP (full)) |
14d55bce | 242 | { |
e23f810c | 243 | Lisp_Object fullname; |
388ac098 GM |
244 | int nbytes = len + directory_nbytes + needsep; |
245 | int nchars; | |
5617588f | 246 | |
388ac098 | 247 | fullname = make_uninit_multibyte_string (nbytes, nbytes); |
e23f810c | 248 | bcopy (XSTRING (directory)->data, XSTRING (fullname)->data, |
388ac098 GM |
249 | directory_nbytes); |
250 | ||
5617588f | 251 | if (needsep) |
cb154426 | 252 | XSTRING (fullname)->data[directory_nbytes] = DIRECTORY_SEP; |
388ac098 | 253 | |
e23f810c | 254 | bcopy (XSTRING (name)->data, |
388ac098 GM |
255 | XSTRING (fullname)->data + directory_nbytes + needsep, |
256 | len); | |
257 | ||
258 | nchars = chars_in_text (XSTRING (fullname)->data, nbytes); | |
259 | ||
260 | /* Some bug somewhere. */ | |
261 | if (nchars > nbytes) | |
262 | abort (); | |
263 | ||
e23f810c | 264 | XSTRING (fullname)->size = nchars; |
388ac098 | 265 | if (nchars == nbytes) |
e23f810c | 266 | SET_STRING_BYTES (XSTRING (fullname), -1); |
388ac098 | 267 | |
4424b255 GV |
268 | finalname = fullname; |
269 | } | |
aab9c564 KH |
270 | else |
271 | finalname = name; | |
4424b255 GV |
272 | |
273 | if (attrs) | |
274 | { | |
275 | /* Construct an expanded filename for the directory entry. | |
276 | Use the decoded names for input to Ffile_attributes. */ | |
388ac098 GM |
277 | Lisp_Object decoded_fullname, fileattrs; |
278 | struct gcpro gcpro1, gcpro2; | |
279 | ||
280 | decoded_fullname = fileattrs = Qnil; | |
281 | GCPRO2 (decoded_fullname, fileattrs); | |
4424b255 | 282 | |
388ac098 | 283 | /* Both Fexpand_file_name and Ffile_attributes can GC. */ |
4424b255 GV |
284 | decoded_fullname = Fexpand_file_name (name, directory); |
285 | fileattrs = Ffile_attributes (decoded_fullname); | |
286 | ||
287 | list = Fcons (Fcons (finalname, fileattrs), list); | |
388ac098 | 288 | UNGCPRO; |
4424b255 GV |
289 | } |
290 | else | |
388ac098 | 291 | list = Fcons (finalname, list); |
14d55bce | 292 | } |
388ac098 GM |
293 | |
294 | UNGCPRO; | |
14d55bce RS |
295 | } |
296 | } | |
2488aba5 | 297 | |
8e42f043 GM |
298 | retry_p = 0; |
299 | #ifdef EAGAIN | |
300 | retry_p |= errno == EAGAIN; | |
301 | #endif | |
302 | #ifdef EINTR | |
303 | retry_p |= errno == EINTR; | |
304 | #endif | |
305 | ||
14d55bce | 306 | closedir (d); |
2488aba5 AI |
307 | |
308 | /* Discard the unwind protect. */ | |
309 | specpdl_ptr = specpdl + count; | |
310 | ||
8e42f043 GM |
311 | if (retry_p) |
312 | goto retry; | |
313 | ||
388ac098 GM |
314 | if (NILP (nosort)) |
315 | list = Fsort (Fnreverse (list), | |
316 | attrs ? Qfile_attributes_lessp : Qstring_lessp); | |
317 | ||
318 | RETURN_UNGCPRO (list); | |
14d55bce | 319 | } |
4424b255 GV |
320 | |
321 | ||
322 | DEFUN ("directory-files", Fdirectory_files, Sdirectory_files, 1, 4, 0, | |
323 | "Return a list of names of files in DIRECTORY.\n\ | |
324 | There are three optional arguments:\n\ | |
325 | If FULL is non-nil, return absolute file names. Otherwise return names\n\ | |
326 | that are relative to the specified directory.\n\ | |
327 | If MATCH is non-nil, mention only file names that match the regexp MATCH.\n\ | |
328 | If NOSORT is non-nil, the list is not sorted--its order is unpredictable.\n\ | |
329 | NOSORT is useful if you plan to sort the result yourself.") | |
330 | (directory, full, match, nosort) | |
331 | Lisp_Object directory, full, match, nosort; | |
332 | { | |
333 | Lisp_Object handler; | |
334 | ||
335 | /* If the file name has special constructs in it, | |
336 | call the corresponding file handler. */ | |
337 | handler = Ffind_file_name_handler (directory, Qdirectory_files); | |
338 | if (!NILP (handler)) | |
339 | { | |
340 | Lisp_Object args[6]; | |
341 | ||
342 | args[0] = handler; | |
343 | args[1] = Qdirectory_files; | |
344 | args[2] = directory; | |
345 | args[3] = full; | |
346 | args[4] = match; | |
347 | args[5] = nosort; | |
348 | return Ffuncall (6, args); | |
349 | } | |
350 | ||
351 | return directory_files_internal (directory, full, match, nosort, 0); | |
352 | } | |
353 | ||
354 | DEFUN ("directory-files-and-attributes", Fdirectory_files_and_attributes, Sdirectory_files_and_attributes, 1, 4, 0, | |
355 | "Return a list of names of files and their attributes in DIRECTORY.\n\ | |
356 | There are three optional arguments:\n\ | |
357 | If FULL is non-nil, return absolute file names. Otherwise return names\n\ | |
358 | that are relative to the specified directory.\n\ | |
359 | If MATCH is non-nil, mention only file names that match the regexp MATCH.\n\ | |
360 | If NOSORT is non-nil, the list is not sorted--its order is unpredictable.\n\ | |
361 | NOSORT is useful if you plan to sort the result yourself.") | |
362 | (directory, full, match, nosort) | |
363 | Lisp_Object directory, full, match, nosort; | |
364 | { | |
365 | Lisp_Object handler; | |
366 | ||
367 | /* If the file name has special constructs in it, | |
368 | call the corresponding file handler. */ | |
369 | handler = Ffind_file_name_handler (directory, Qdirectory_files_and_attributes); | |
370 | if (!NILP (handler)) | |
371 | { | |
372 | Lisp_Object args[6]; | |
373 | ||
374 | args[0] = handler; | |
375 | args[1] = Qdirectory_files_and_attributes; | |
376 | args[2] = directory; | |
377 | args[3] = full; | |
378 | args[4] = match; | |
379 | args[5] = nosort; | |
380 | return Ffuncall (6, args); | |
381 | } | |
382 | ||
383 | return directory_files_internal (directory, full, match, nosort, 1); | |
384 | } | |
385 | ||
14d55bce RS |
386 | \f |
387 | Lisp_Object file_name_completion (); | |
388 | ||
389 | DEFUN ("file-name-completion", Ffile_name_completion, Sfile_name_completion, | |
390 | 2, 2, 0, | |
23bd240f | 391 | "Complete file name FILE in directory DIRECTORY.\n\ |
14d55bce | 392 | Returns the longest string\n\ |
7b6540dd | 393 | common to all file names in DIRECTORY that start with FILE.\n\ |
14d55bce RS |
394 | If there is only one and FILE matches it exactly, returns t.\n\ |
395 | Returns nil if DIR contains no name starting with FILE.") | |
23bd240f EN |
396 | (file, directory) |
397 | Lisp_Object file, directory; | |
14d55bce | 398 | { |
32f4334d | 399 | Lisp_Object handler; |
32f4334d | 400 | |
8436e231 | 401 | /* If the directory name has special constructs in it, |
32f4334d | 402 | call the corresponding file handler. */ |
23bd240f | 403 | handler = Ffind_file_name_handler (directory, Qfile_name_completion); |
32f4334d | 404 | if (!NILP (handler)) |
23bd240f | 405 | return call3 (handler, Qfile_name_completion, file, directory); |
32f4334d | 406 | |
8436e231 RS |
407 | /* If the file name has special constructs in it, |
408 | call the corresponding file handler. */ | |
409 | handler = Ffind_file_name_handler (file, Qfile_name_completion); | |
410 | if (!NILP (handler)) | |
23bd240f | 411 | return call3 (handler, Qfile_name_completion, file, directory); |
8436e231 | 412 | |
23bd240f | 413 | return file_name_completion (file, directory, 0, 0); |
14d55bce RS |
414 | } |
415 | ||
416 | DEFUN ("file-name-all-completions", Ffile_name_all_completions, | |
417 | Sfile_name_all_completions, 2, 2, 0, | |
23bd240f EN |
418 | "Return a list of all completions of file name FILE in directory DIRECTORY.\n\ |
419 | These are all file names in directory DIRECTORY which begin with FILE.") | |
420 | (file, directory) | |
421 | Lisp_Object file, directory; | |
14d55bce | 422 | { |
32f4334d RS |
423 | Lisp_Object handler; |
424 | ||
8436e231 | 425 | /* If the directory name has special constructs in it, |
32f4334d | 426 | call the corresponding file handler. */ |
23bd240f | 427 | handler = Ffind_file_name_handler (directory, Qfile_name_all_completions); |
32f4334d | 428 | if (!NILP (handler)) |
23bd240f | 429 | return call3 (handler, Qfile_name_all_completions, file, directory); |
32f4334d | 430 | |
8436e231 RS |
431 | /* If the file name has special constructs in it, |
432 | call the corresponding file handler. */ | |
433 | handler = Ffind_file_name_handler (file, Qfile_name_all_completions); | |
434 | if (!NILP (handler)) | |
23bd240f | 435 | return call3 (handler, Qfile_name_all_completions, file, directory); |
8436e231 | 436 | |
23bd240f | 437 | return file_name_completion (file, directory, 1, 0); |
14d55bce RS |
438 | } |
439 | ||
dfcf069d AS |
440 | static int file_name_completion_stat (); |
441 | ||
14d55bce RS |
442 | Lisp_Object |
443 | file_name_completion (file, dirname, all_flag, ver_flag) | |
444 | Lisp_Object file, dirname; | |
445 | int all_flag, ver_flag; | |
446 | { | |
447 | DIR *d; | |
6bbd7a29 | 448 | int bestmatchsize = 0, skip; |
14d55bce RS |
449 | register int compare, matchsize; |
450 | unsigned char *p1, *p2; | |
451 | int matchcount = 0; | |
452 | Lisp_Object bestmatch, tem, elt, name; | |
24c2a54f RS |
453 | Lisp_Object encoded_file; |
454 | Lisp_Object encoded_dir; | |
14d55bce RS |
455 | struct stat st; |
456 | int directoryp; | |
457 | int passcount; | |
458 | int count = specpdl_ptr - specpdl; | |
24c2a54f | 459 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5; |
3fcc88cc | 460 | |
6bbd7a29 GM |
461 | elt = Qnil; |
462 | ||
14d55bce RS |
463 | #ifdef VMS |
464 | extern DIRENTRY * readdirver (); | |
465 | ||
466 | DIRENTRY *((* readfunc) ()); | |
467 | ||
468 | /* Filename completion on VMS ignores case, since VMS filesys does. */ | |
469 | specbind (Qcompletion_ignore_case, Qt); | |
470 | ||
471 | readfunc = readdir; | |
472 | if (ver_flag) | |
473 | readfunc = readdirver; | |
474 | file = Fupcase (file); | |
475 | #else /* not VMS */ | |
476 | CHECK_STRING (file, 0); | |
477 | #endif /* not VMS */ | |
478 | ||
128ecc89 RS |
479 | #ifdef FILE_SYSTEM_CASE |
480 | file = FILE_SYSTEM_CASE (file); | |
481 | #endif | |
14d55bce | 482 | bestmatch = Qnil; |
24c2a54f RS |
483 | encoded_file = encoded_dir = Qnil; |
484 | GCPRO5 (file, dirname, bestmatch, encoded_file, encoded_dir); | |
3fcc88cc | 485 | dirname = Fexpand_file_name (dirname, Qnil); |
14d55bce | 486 | |
24c2a54f RS |
487 | /* Do completion on the encoded file name |
488 | because the other names in the directory are (we presume) | |
489 | encoded likewise. We decode the completed string at the end. */ | |
490 | encoded_file = ENCODE_FILE (file); | |
491 | ||
492 | encoded_dir = ENCODE_FILE (dirname); | |
493 | ||
14d55bce RS |
494 | /* With passcount = 0, ignore files that end in an ignored extension. |
495 | If nothing found then try again with passcount = 1, don't ignore them. | |
496 | If looking for all completions, start with passcount = 1, | |
497 | so always take even the ignored ones. | |
498 | ||
499 | ** It would not actually be helpful to the user to ignore any possible | |
500 | completions when making a list of them.** */ | |
501 | ||
265a9e55 | 502 | for (passcount = !!all_flag; NILP (bestmatch) && passcount < 2; passcount++) |
14d55bce | 503 | { |
24c2a54f RS |
504 | d = opendir (XSTRING (Fdirectory_file_name (encoded_dir))->data); |
505 | if (!d) | |
14d55bce RS |
506 | report_file_error ("Opening directory", Fcons (dirname, Qnil)); |
507 | ||
508 | /* Loop reading blocks */ | |
509 | /* (att3b compiler bug requires do a null comparison this way) */ | |
510 | while (1) | |
511 | { | |
512 | DIRENTRY *dp; | |
513 | int len; | |
514 | ||
515 | #ifdef VMS | |
516 | dp = (*readfunc) (d); | |
517 | #else | |
518 | dp = readdir (d); | |
519 | #endif | |
520 | if (!dp) break; | |
521 | ||
522 | len = NAMLEN (dp); | |
523 | ||
265a9e55 | 524 | if (!NILP (Vquit_flag) && NILP (Vinhibit_quit)) |
14d55bce | 525 | goto quit; |
128ecc89 | 526 | if (! DIRENTRY_NONEMPTY (dp) |
24c2a54f RS |
527 | || len < XSTRING (encoded_file)->size |
528 | || 0 <= scmp (dp->d_name, XSTRING (encoded_file)->data, | |
529 | XSTRING (encoded_file)->size)) | |
14d55bce RS |
530 | continue; |
531 | ||
24c2a54f | 532 | if (file_name_completion_stat (encoded_dir, dp, &st) < 0) |
14d55bce RS |
533 | continue; |
534 | ||
535 | directoryp = ((st.st_mode & S_IFMT) == S_IFDIR); | |
536 | tem = Qnil; | |
ad456ad4 RS |
537 | if (directoryp) |
538 | { | |
539 | #ifndef TRIVIAL_DIRECTORY_ENTRY | |
540 | #define TRIVIAL_DIRECTORY_ENTRY(n) (!strcmp (n, ".") || !strcmp (n, "..")) | |
541 | #endif | |
542 | /* "." and ".." are never interesting as completions, but are | |
543 | actually in the way in a directory contains only one file. */ | |
544 | if (!passcount && TRIVIAL_DIRECTORY_ENTRY (dp->d_name)) | |
545 | continue; | |
546 | } | |
547 | else | |
14d55bce RS |
548 | { |
549 | /* Compare extensions-to-be-ignored against end of this file name */ | |
550 | /* if name is not an exact match against specified string */ | |
24c2a54f | 551 | if (!passcount && len > XSTRING (encoded_file)->size) |
14d55bce RS |
552 | /* and exit this for loop if a match is found */ |
553 | for (tem = Vcompletion_ignored_extensions; | |
70949dac | 554 | CONSP (tem); tem = XCDR (tem)) |
14d55bce | 555 | { |
70949dac | 556 | elt = XCAR (tem); |
88cf1852 | 557 | if (!STRINGP (elt)) continue; |
14d55bce RS |
558 | skip = len - XSTRING (elt)->size; |
559 | if (skip < 0) continue; | |
560 | ||
561 | if (0 <= scmp (dp->d_name + skip, | |
562 | XSTRING (elt)->data, | |
563 | XSTRING (elt)->size)) | |
564 | continue; | |
565 | break; | |
566 | } | |
567 | } | |
568 | ||
f676868d KH |
569 | /* If an ignored-extensions match was found, |
570 | don't process this name as a completion. */ | |
571 | if (!passcount && CONSP (tem)) | |
572 | continue; | |
573 | ||
574 | if (!passcount) | |
14d55bce | 575 | { |
f676868d KH |
576 | Lisp_Object regexps; |
577 | Lisp_Object zero; | |
617b3bfe | 578 | XSETFASTINT (zero, 0); |
f676868d KH |
579 | |
580 | /* Ignore this element if it fails to match all the regexps. */ | |
581 | for (regexps = Vcompletion_regexp_list; CONSP (regexps); | |
70949dac | 582 | regexps = XCDR (regexps)) |
f676868d | 583 | { |
70949dac | 584 | tem = Fstring_match (XCAR (regexps), elt, zero); |
f676868d KH |
585 | if (NILP (tem)) |
586 | break; | |
587 | } | |
588 | if (CONSP (regexps)) | |
589 | continue; | |
590 | } | |
14d55bce | 591 | |
f676868d | 592 | /* Update computation of how much all possible completions match */ |
14d55bce | 593 | |
f676868d KH |
594 | matchcount++; |
595 | ||
596 | if (all_flag || NILP (bestmatch)) | |
597 | { | |
598 | /* This is a possible completion */ | |
599 | if (directoryp) | |
14d55bce | 600 | { |
f676868d KH |
601 | /* This completion is a directory; make it end with '/' */ |
602 | name = Ffile_name_as_directory (make_string (dp->d_name, len)); | |
603 | } | |
604 | else | |
605 | name = make_string (dp->d_name, len); | |
606 | if (all_flag) | |
607 | { | |
bd33479f | 608 | name = DECODE_FILE (name); |
f676868d | 609 | bestmatch = Fcons (name, bestmatch); |
14d55bce RS |
610 | } |
611 | else | |
612 | { | |
f676868d KH |
613 | bestmatch = name; |
614 | bestmatchsize = XSTRING (name)->size; | |
615 | } | |
616 | } | |
617 | else | |
618 | { | |
619 | compare = min (bestmatchsize, len); | |
620 | p1 = XSTRING (bestmatch)->data; | |
621 | p2 = (unsigned char *) dp->d_name; | |
622 | matchsize = scmp(p1, p2, compare); | |
623 | if (matchsize < 0) | |
624 | matchsize = compare; | |
625 | if (completion_ignore_case) | |
626 | { | |
627 | /* If this is an exact match except for case, | |
628 | use it as the best match rather than one that is not | |
629 | an exact match. This way, we get the case pattern | |
630 | of the actual match. */ | |
f5ec5d3d RS |
631 | /* This tests that the current file is an exact match |
632 | but BESTMATCH is not (it is too long). */ | |
f676868d KH |
633 | if ((matchsize == len |
634 | && matchsize + !!directoryp | |
635 | < XSTRING (bestmatch)->size) | |
636 | || | |
637 | /* If there is no exact match ignoring case, | |
638 | prefer a match that does not change the case | |
639 | of the input. */ | |
f5ec5d3d RS |
640 | /* If there is more than one exact match aside from |
641 | case, and one of them is exact including case, | |
642 | prefer that one. */ | |
643 | /* This == checks that, of current file and BESTMATCH, | |
644 | either both or neither are exact. */ | |
f676868d KH |
645 | (((matchsize == len) |
646 | == | |
647 | (matchsize + !!directoryp | |
648 | == XSTRING (bestmatch)->size)) | |
24c2a54f RS |
649 | && !bcmp (p2, XSTRING (encoded_file)->data, XSTRING (encoded_file)->size) |
650 | && bcmp (p1, XSTRING (encoded_file)->data, XSTRING (encoded_file)->size))) | |
97e98a56 | 651 | { |
f676868d KH |
652 | bestmatch = make_string (dp->d_name, len); |
653 | if (directoryp) | |
654 | bestmatch = Ffile_name_as_directory (bestmatch); | |
97e98a56 | 655 | } |
14d55bce | 656 | } |
f676868d KH |
657 | |
658 | /* If this dirname all matches, see if implicit following | |
659 | slash does too. */ | |
660 | if (directoryp | |
661 | && compare == matchsize | |
662 | && bestmatchsize > matchsize | |
0b39d75d | 663 | && IS_ANY_SEP (p1[matchsize])) |
f676868d KH |
664 | matchsize++; |
665 | bestmatchsize = matchsize; | |
14d55bce RS |
666 | } |
667 | } | |
668 | closedir (d); | |
669 | } | |
670 | ||
3fcc88cc RS |
671 | UNGCPRO; |
672 | bestmatch = unbind_to (count, bestmatch); | |
14d55bce | 673 | |
265a9e55 | 674 | if (all_flag || NILP (bestmatch)) |
24c2a54f | 675 | { |
bd33479f KH |
676 | if (STRINGP (bestmatch)) |
677 | bestmatch = DECODE_FILE (bestmatch); | |
24c2a54f RS |
678 | return bestmatch; |
679 | } | |
14d55bce RS |
680 | if (matchcount == 1 && bestmatchsize == XSTRING (file)->size) |
681 | return Qt; | |
24c2a54f RS |
682 | bestmatch = Fsubstring (bestmatch, make_number (0), |
683 | make_number (bestmatchsize)); | |
684 | /* Now that we got the right initial segment of BESTMATCH, | |
685 | decode it from the coding system in use. */ | |
bd33479f | 686 | bestmatch = DECODE_FILE (bestmatch); |
24c2a54f RS |
687 | return bestmatch; |
688 | ||
14d55bce RS |
689 | quit: |
690 | if (d) closedir (d); | |
691 | Vquit_flag = Qnil; | |
692 | return Fsignal (Qquit, Qnil); | |
693 | } | |
694 | ||
dfcf069d | 695 | static int |
14d55bce RS |
696 | file_name_completion_stat (dirname, dp, st_addr) |
697 | Lisp_Object dirname; | |
698 | DIRENTRY *dp; | |
699 | struct stat *st_addr; | |
700 | { | |
701 | int len = NAMLEN (dp); | |
702 | int pos = XSTRING (dirname)->size; | |
7e3cf34f | 703 | int value; |
14d55bce RS |
704 | char *fullname = (char *) alloca (len + pos + 2); |
705 | ||
04924ee3 RS |
706 | #ifdef MSDOS |
707 | #if __DJGPP__ > 1 | |
708 | /* Some fields of struct stat are *very* expensive to compute on MS-DOS, | |
709 | but aren't required here. Avoid computing the following fields: | |
710 | st_inode, st_size and st_nlink for directories, and the execute bits | |
711 | in st_mode for non-directory files with non-standard extensions. */ | |
712 | ||
713 | unsigned short save_djstat_flags = _djstat_flags; | |
714 | ||
715 | _djstat_flags = _STAT_INODE | _STAT_EXEC_MAGIC | _STAT_DIRSIZE; | |
716 | #endif /* __DJGPP__ > 1 */ | |
717 | #endif /* MSDOS */ | |
718 | ||
14d55bce RS |
719 | bcopy (XSTRING (dirname)->data, fullname, pos); |
720 | #ifndef VMS | |
0b39d75d RS |
721 | if (!IS_DIRECTORY_SEP (fullname[pos - 1])) |
722 | fullname[pos++] = DIRECTORY_SEP; | |
14d55bce RS |
723 | #endif |
724 | ||
725 | bcopy (dp->d_name, fullname + pos, len); | |
726 | fullname[pos + len] = 0; | |
727 | ||
a889bd0e | 728 | #ifdef S_IFLNK |
7e3cf34f RS |
729 | /* We want to return success if a link points to a nonexistent file, |
730 | but we want to return the status for what the link points to, | |
731 | in case it is a directory. */ | |
732 | value = lstat (fullname, st_addr); | |
733 | stat (fullname, st_addr); | |
734 | return value; | |
a889bd0e | 735 | #else |
04924ee3 RS |
736 | value = stat (fullname, st_addr); |
737 | #ifdef MSDOS | |
738 | #if __DJGPP__ > 1 | |
739 | _djstat_flags = save_djstat_flags; | |
740 | #endif /* __DJGPP__ > 1 */ | |
741 | #endif /* MSDOS */ | |
742 | return value; | |
743 | #endif /* S_IFLNK */ | |
14d55bce RS |
744 | } |
745 | \f | |
3ed991aa RS |
746 | #ifdef VMS |
747 | ||
748 | DEFUN ("file-name-all-versions", Ffile_name_all_versions, | |
749 | Sfile_name_all_versions, 2, 2, 0, | |
23bd240f EN |
750 | "Return a list of all versions of file name FILE in directory DIRECTORY.") |
751 | (file, directory) | |
752 | Lisp_Object file, directory; | |
3ed991aa | 753 | { |
23bd240f | 754 | return file_name_completion (file, directory, 1, 1); |
3ed991aa RS |
755 | } |
756 | ||
757 | DEFUN ("file-version-limit", Ffile_version_limit, Sfile_version_limit, 1, 1, 0, | |
758 | "Return the maximum number of versions allowed for FILE.\n\ | |
759 | Returns nil if the file cannot be opened or if there is no version limit.") | |
760 | (filename) | |
761 | Lisp_Object filename; | |
762 | { | |
763 | Lisp_Object retval; | |
764 | struct FAB fab; | |
765 | struct RAB rab; | |
766 | struct XABFHC xabfhc; | |
767 | int status; | |
768 | ||
769 | filename = Fexpand_file_name (filename, Qnil); | |
770 | fab = cc$rms_fab; | |
771 | xabfhc = cc$rms_xabfhc; | |
772 | fab.fab$l_fna = XSTRING (filename)->data; | |
773 | fab.fab$b_fns = strlen (fab.fab$l_fna); | |
774 | fab.fab$l_xab = (char *) &xabfhc; | |
775 | status = sys$open (&fab, 0, 0); | |
776 | if (status != RMS$_NORMAL) /* Probably non-existent file */ | |
777 | return Qnil; | |
778 | sys$close (&fab, 0, 0); | |
779 | if (xabfhc.xab$w_verlimit == 32767) | |
780 | return Qnil; /* No version limit */ | |
781 | else | |
782 | return make_number (xabfhc.xab$w_verlimit); | |
783 | } | |
784 | ||
785 | #endif /* VMS */ | |
786 | \f | |
14d55bce RS |
787 | Lisp_Object |
788 | make_time (time) | |
e5124be7 | 789 | time_t time; |
14d55bce RS |
790 | { |
791 | return Fcons (make_number (time >> 16), | |
792 | Fcons (make_number (time & 0177777), Qnil)); | |
793 | } | |
794 | ||
795 | DEFUN ("file-attributes", Ffile_attributes, Sfile_attributes, 1, 1, 0, | |
796 | "Return a list of attributes of file FILENAME.\n\ | |
797 | Value is nil if specified file cannot be opened.\n\ | |
798 | Otherwise, list elements are:\n\ | |
799 | 0. t for directory, string (name linked to) for symbolic link, or nil.\n\ | |
800 | 1. Number of links to file.\n\ | |
801 | 2. File uid.\n\ | |
802 | 3. File gid.\n\ | |
803 | 4. Last access time, as a list of two integers.\n\ | |
804 | First integer has high-order 16 bits of time, second has low 16 bits.\n\ | |
805 | 5. Last modification time, likewise.\n\ | |
806 | 6. Last status change time, likewise.\n\ | |
cb1846b4 EZ |
807 | 7. Size in bytes.\n\ |
808 | This is a floating point number if the size is too large for an integer.\n\ | |
14d55bce RS |
809 | 8. File modes, as a string of ten letters or dashes as in ls -l.\n\ |
810 | 9. t iff file's gid would change if file were deleted and recreated.\n\ | |
cb1846b4 | 811 | 10. inode number. If inode number is larger than the Emacs integer,\n\ |
6d4e6528 RS |
812 | this is a cons cell containing two integers: first the high part,\n\ |
813 | then the low 16 bits.\n\ | |
14d55bce RS |
814 | 11. Device number.\n\ |
815 | \n\ | |
ccbcf979 | 816 | If file does not exist, returns nil.") |
14d55bce RS |
817 | (filename) |
818 | Lisp_Object filename; | |
819 | { | |
820 | Lisp_Object values[12]; | |
24c2a54f | 821 | Lisp_Object encoded; |
14d55bce | 822 | struct stat s; |
b3edfc9b EZ |
823 | #ifdef BSD4_2 |
824 | Lisp_Object dirname; | |
14d55bce | 825 | struct stat sdir; |
b3edfc9b | 826 | #endif |
14d55bce | 827 | char modes[10]; |
32f4334d | 828 | Lisp_Object handler; |
14d55bce RS |
829 | |
830 | filename = Fexpand_file_name (filename, Qnil); | |
32f4334d RS |
831 | |
832 | /* If the file name has special constructs in it, | |
833 | call the corresponding file handler. */ | |
a617e913 | 834 | handler = Ffind_file_name_handler (filename, Qfile_attributes); |
32f4334d RS |
835 | if (!NILP (handler)) |
836 | return call2 (handler, Qfile_attributes, filename); | |
837 | ||
24c2a54f RS |
838 | encoded = ENCODE_FILE (filename); |
839 | ||
840 | if (lstat (XSTRING (encoded)->data, &s) < 0) | |
14d55bce RS |
841 | return Qnil; |
842 | ||
843 | switch (s.st_mode & S_IFMT) | |
844 | { | |
845 | default: | |
846 | values[0] = Qnil; break; | |
847 | case S_IFDIR: | |
848 | values[0] = Qt; break; | |
849 | #ifdef S_IFLNK | |
850 | case S_IFLNK: | |
851 | values[0] = Ffile_symlink_p (filename); break; | |
852 | #endif | |
853 | } | |
854 | values[1] = make_number (s.st_nlink); | |
855 | values[2] = make_number (s.st_uid); | |
856 | values[3] = make_number (s.st_gid); | |
857 | values[4] = make_time (s.st_atime); | |
858 | values[5] = make_time (s.st_mtime); | |
859 | values[6] = make_time (s.st_ctime); | |
68c45bf0 | 860 | values[7] = make_number (s.st_size); |
cb1846b4 | 861 | /* If the size is out of range for an integer, return a float. */ |
60fc6069 | 862 | if (XINT (values[7]) != s.st_size) |
cb1846b4 | 863 | values[7] = make_float ((double)s.st_size); |
14d55bce RS |
864 | filemodestring (&s, modes); |
865 | values[8] = make_string (modes, 10); | |
866 | #ifdef BSD4_3 /* Gross kludge to avoid lack of "#if defined(...)" in VMS */ | |
eb8c3be9 | 867 | #define BSD4_2 /* A new meaning to the term `backwards compatibility' */ |
14d55bce RS |
868 | #endif |
869 | #ifdef BSD4_2 /* file gid will be dir gid */ | |
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) */ | |
880 | #ifdef BSD4_3 | |
881 | #undef BSD4_2 /* ok, you can look again without throwing up */ | |
882 | #endif | |
ce4200f6 RS |
883 | /* Cast -1 to avoid warning if int is not as wide as VALBITS. */ |
884 | if (s.st_ino & (((EMACS_INT) (-1)) << VALBITS)) | |
4c637faa RS |
885 | /* To allow inode numbers larger than VALBITS, separate the bottom |
886 | 16 bits. */ | |
887 | values[10] = Fcons (make_number (s.st_ino >> 16), | |
888 | make_number (s.st_ino & 0xffff)); | |
889 | else | |
890 | /* But keep the most common cases as integers. */ | |
891 | values[10] = make_number (s.st_ino); | |
68c45bf0 PE |
892 | |
893 | /* Likewise for device. */ | |
894 | if (s.st_dev & (((EMACS_INT) (-1)) << VALBITS)) | |
895 | values[11] = Fcons (make_number (s.st_dev >> 16), | |
896 | make_number (s.st_dev & 0xffff)); | |
897 | else | |
898 | values[11] = make_number (s.st_dev); | |
899 | ||
14d55bce RS |
900 | return Flist (sizeof(values) / sizeof(values[0]), values); |
901 | } | |
4424b255 GV |
902 | |
903 | DEFUN ("file-attributes-lessp", Ffile_attributes_lessp, Sfile_attributes_lessp, 2, 2, 0, | |
904 | "Return t if first arg file attributes list is less than second.\n\ | |
905 | Comparison is in lexicographic order and case is significant.") | |
906 | (f1, f2) | |
907 | Lisp_Object f1, f2; | |
908 | { | |
909 | return Fstring_lessp (Fcar (f1), Fcar (f2)); | |
910 | } | |
14d55bce | 911 | \f |
dfcf069d | 912 | void |
14d55bce RS |
913 | syms_of_dired () |
914 | { | |
32f4334d | 915 | Qdirectory_files = intern ("directory-files"); |
4424b255 | 916 | Qdirectory_files_and_attributes = intern ("directory-files-and-attributes"); |
32f4334d RS |
917 | Qfile_name_completion = intern ("file-name-completion"); |
918 | Qfile_name_all_completions = intern ("file-name-all-completions"); | |
434e6714 | 919 | Qfile_attributes = intern ("file-attributes"); |
4424b255 | 920 | Qfile_attributes_lessp = intern ("file-attributes-lessp"); |
32f4334d | 921 | |
a2d3836c | 922 | staticpro (&Qdirectory_files); |
4424b255 | 923 | staticpro (&Qdirectory_files_and_attributes); |
a2d3836c EN |
924 | staticpro (&Qfile_name_completion); |
925 | staticpro (&Qfile_name_all_completions); | |
926 | staticpro (&Qfile_attributes); | |
4424b255 | 927 | staticpro (&Qfile_attributes_lessp); |
a2d3836c | 928 | |
14d55bce | 929 | defsubr (&Sdirectory_files); |
4424b255 | 930 | defsubr (&Sdirectory_files_and_attributes); |
14d55bce RS |
931 | defsubr (&Sfile_name_completion); |
932 | #ifdef VMS | |
933 | defsubr (&Sfile_name_all_versions); | |
3ed991aa | 934 | defsubr (&Sfile_version_limit); |
14d55bce RS |
935 | #endif /* VMS */ |
936 | defsubr (&Sfile_name_all_completions); | |
937 | defsubr (&Sfile_attributes); | |
4424b255 | 938 | defsubr (&Sfile_attributes_lessp); |
14d55bce RS |
939 | |
940 | #ifdef VMS | |
941 | Qcompletion_ignore_case = intern ("completion-ignore-case"); | |
942 | staticpro (&Qcompletion_ignore_case); | |
943 | #endif /* VMS */ | |
944 | ||
945 | DEFVAR_LISP ("completion-ignored-extensions", &Vcompletion_ignored_extensions, | |
946 | "*Completion ignores filenames ending in any string in this list.\n\ | |
947 | This variable does not affect lists of possible completions,\n\ | |
948 | but does affect the commands that actually do completions."); | |
949 | Vcompletion_ignored_extensions = Qnil; | |
950 | } |