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 | ||
128ecc89 | 69 | #ifndef MSDOS |
14d55bce | 70 | #define DIRENTRY struct direct |
14d55bce RS |
71 | |
72 | extern DIR *opendir (); | |
73 | extern struct direct *readdir (); | |
74 | ||
128ecc89 RS |
75 | #endif /* not MSDOS */ |
76 | #endif /* not SYSV_SYSTEM_DIR */ | |
77 | ||
78 | #ifdef MSDOS | |
79 | #define DIRENTRY_NONEMPTY(p) ((p)->d_name[0] != 0) | |
80 | #else | |
81 | #define DIRENTRY_NONEMPTY(p) ((p)->d_ino) | |
14d55bce RS |
82 | #endif |
83 | ||
14d55bce RS |
84 | #include "lisp.h" |
85 | #include "buffer.h" | |
86 | #include "commands.h" | |
bd33479f KH |
87 | #include "charset.h" |
88 | #include "coding.h" | |
14d55bce | 89 | #include "regex.h" |
14d55bce | 90 | |
e50c66d3 KH |
91 | /* Returns a search buffer, with a fastmap allocated and ready to go. */ |
92 | extern struct re_pattern_buffer *compile_pattern (); | |
c7e466e1 | 93 | |
14d55bce RS |
94 | #define min(a, b) ((a) < (b) ? (a) : (b)) |
95 | ||
96 | /* if system does not have symbolic links, it does not have lstat. | |
97 | In that case, use ordinary stat instead. */ | |
98 | ||
99 | #ifndef S_IFLNK | |
100 | #define lstat stat | |
101 | #endif | |
102 | ||
97e98a56 | 103 | extern int completion_ignore_case; |
f676868d | 104 | extern Lisp_Object Vcompletion_regexp_list; |
bd33479f | 105 | extern Lisp_Object Vfile_name_coding_system, Vdefault_file_name_coding_system; |
ccbcf979 | 106 | |
14d55bce | 107 | Lisp_Object Vcompletion_ignored_extensions; |
14d55bce | 108 | Lisp_Object Qcompletion_ignore_case; |
32f4334d | 109 | Lisp_Object Qdirectory_files; |
4424b255 | 110 | Lisp_Object Qdirectory_files_and_attributes; |
32f4334d RS |
111 | Lisp_Object Qfile_name_completion; |
112 | Lisp_Object Qfile_name_all_completions; | |
434e6714 | 113 | Lisp_Object Qfile_attributes; |
4424b255 | 114 | Lisp_Object Qfile_attributes_lessp; |
14d55bce | 115 | \f |
4424b255 GV |
116 | /* Function shared by Fdirectory_files and Fdirectory_files_and_attributes. |
117 | When ATTRS is zero, return a list of directory filenames; when | |
118 | non-zero, return a list of directory filenames and their attributes. */ | |
119 | Lisp_Object | |
120 | directory_files_internal (directory, full, match, nosort, attrs) | |
23bd240f | 121 | Lisp_Object directory, full, match, nosort; |
4424b255 | 122 | int attrs; |
14d55bce RS |
123 | { |
124 | DIR *d; | |
5617588f | 125 | int dirnamelen; |
6155fae1 | 126 | Lisp_Object list, name, dirfilename; |
24c2a54f | 127 | Lisp_Object encoded_directory; |
32f4334d | 128 | Lisp_Object handler; |
e50c66d3 | 129 | struct re_pattern_buffer *bufp; |
96d64004 AS |
130 | int needsep = 0; |
131 | struct gcpro gcpro1, gcpro2; | |
32f4334d | 132 | |
96d64004 | 133 | /* Because of file name handlers, these functions might call |
6155fae1 | 134 | Ffuncall, and cause a GC. */ |
96d64004 AS |
135 | GCPRO1 (match); |
136 | directory = Fexpand_file_name (directory, Qnil); | |
137 | UNGCPRO; | |
138 | GCPRO2 (match, directory); | |
139 | dirfilename = Fdirectory_file_name (directory); | |
140 | UNGCPRO; | |
6155fae1 | 141 | |
265a9e55 | 142 | if (!NILP (match)) |
14d55bce RS |
143 | { |
144 | CHECK_STRING (match, 3); | |
ebb9e16f JB |
145 | |
146 | /* MATCH might be a flawed regular expression. Rather than | |
8e6208c5 | 147 | catching and signaling our own errors, we just call |
ebb9e16f | 148 | compile_pattern to do the work for us. */ |
c872c6b2 RS |
149 | /* Pass 1 for the MULTIBYTE arg |
150 | because we do make multibyte strings if the contents warrant. */ | |
14d55bce | 151 | #ifdef VMS |
e50c66d3 | 152 | bufp = compile_pattern (match, 0, |
3e937712 | 153 | buffer_defaults.downcase_table, 0, 1); |
14d55bce | 154 | #else |
3e937712 | 155 | bufp = compile_pattern (match, 0, Qnil, 0, 1); |
14d55bce RS |
156 | #endif |
157 | } | |
158 | ||
24c2a54f RS |
159 | dirfilename = ENCODE_FILE (dirfilename); |
160 | ||
161 | encoded_directory = ENCODE_FILE (directory); | |
162 | ||
e50c66d3 | 163 | /* Now *bufp is the compiled form of MATCH; don't call anything |
6155fae1 JB |
164 | which might compile a new regexp until we're done with the loop! */ |
165 | ||
166 | /* Do this opendir after anything which might signal an error; if | |
8e6208c5 | 167 | an error is signaled while the directory stream is open, we |
6155fae1 JB |
168 | have to make sure it gets closed, and setting up an |
169 | unwind_protect to do so would be a pain. */ | |
170 | d = opendir (XSTRING (dirfilename)->data); | |
171 | if (! d) | |
23bd240f | 172 | report_file_error ("Opening directory", Fcons (directory, Qnil)); |
14d55bce RS |
173 | |
174 | list = Qnil; | |
e23f810c | 175 | dirnamelen = STRING_BYTES (XSTRING (directory)); |
c81a9bdc | 176 | re_match_object = Qt; |
14d55bce | 177 | |
96d64004 AS |
178 | /* Decide whether we need to add a directory separator. */ |
179 | #ifndef VMS | |
180 | if (dirnamelen == 0 | |
e23f810c | 181 | || !IS_ANY_SEP (XSTRING (directory)->data[dirnamelen - 1])) |
96d64004 | 182 | needsep = 1; |
e540cbed | 183 | #endif /* not VMS */ |
96d64004 AS |
184 | |
185 | GCPRO2 (encoded_directory, list); | |
186 | ||
14d55bce RS |
187 | /* Loop reading blocks */ |
188 | while (1) | |
189 | { | |
190 | DIRENTRY *dp = readdir (d); | |
14d55bce RS |
191 | |
192 | if (!dp) break; | |
128ecc89 | 193 | if (DIRENTRY_NONEMPTY (dp)) |
14d55bce | 194 | { |
e23f810c KH |
195 | int len; |
196 | ||
197 | len = NAMLEN (dp); | |
198 | name = DECODE_FILE (make_string (dp->d_name, len)); | |
199 | len = STRING_BYTES (XSTRING (name)); | |
200 | ||
265a9e55 | 201 | if (NILP (match) |
e23f810c | 202 | || (0 <= re_search (bufp, XSTRING (name)->data, len, 0, len, 0))) |
14d55bce | 203 | { |
4424b255 GV |
204 | Lisp_Object finalname; |
205 | ||
206 | finalname = name; | |
265a9e55 | 207 | if (!NILP (full)) |
14d55bce | 208 | { |
5617588f RS |
209 | int afterdirindex = dirnamelen; |
210 | int total = len + dirnamelen; | |
8ec5a404 | 211 | int nchars; |
e23f810c | 212 | Lisp_Object fullname; |
5617588f | 213 | |
e23f810c KH |
214 | fullname = make_uninit_multibyte_string (total + needsep, |
215 | total + needsep); | |
216 | bcopy (XSTRING (directory)->data, XSTRING (fullname)->data, | |
5617588f RS |
217 | dirnamelen); |
218 | if (needsep) | |
e23f810c KH |
219 | XSTRING (fullname)->data[afterdirindex++] = DIRECTORY_SEP; |
220 | bcopy (XSTRING (name)->data, | |
221 | XSTRING (fullname)->data + afterdirindex, len); | |
222 | nchars = chars_in_text (XSTRING (fullname)->data, | |
8ec5a404 | 223 | afterdirindex + len); |
e23f810c KH |
224 | XSTRING (fullname)->size = nchars; |
225 | if (nchars == STRING_BYTES (XSTRING (fullname))) | |
226 | SET_STRING_BYTES (XSTRING (fullname), -1); | |
4424b255 GV |
227 | finalname = fullname; |
228 | } | |
229 | ||
230 | if (attrs) | |
231 | { | |
232 | /* Construct an expanded filename for the directory entry. | |
233 | Use the decoded names for input to Ffile_attributes. */ | |
234 | Lisp_Object decoded_fullname; | |
235 | Lisp_Object fileattrs; | |
236 | ||
237 | decoded_fullname = Fexpand_file_name (name, directory); | |
238 | fileattrs = Ffile_attributes (decoded_fullname); | |
239 | ||
240 | list = Fcons (Fcons (finalname, fileattrs), list); | |
241 | } | |
242 | else | |
243 | { | |
244 | list = Fcons (finalname, list); | |
14d55bce | 245 | } |
14d55bce RS |
246 | } |
247 | } | |
248 | } | |
249 | closedir (d); | |
96d64004 | 250 | UNGCPRO; |
265a9e55 | 251 | if (!NILP (nosort)) |
14d55bce | 252 | return list; |
4424b255 GV |
253 | if (attrs) |
254 | return Fsort (Fnreverse (list), Qfile_attributes_lessp); | |
255 | else | |
256 | return Fsort (Fnreverse (list), Qstring_lessp); | |
14d55bce | 257 | } |
4424b255 GV |
258 | |
259 | ||
260 | DEFUN ("directory-files", Fdirectory_files, Sdirectory_files, 1, 4, 0, | |
261 | "Return a list of names of files in DIRECTORY.\n\ | |
262 | There are three optional arguments:\n\ | |
263 | If FULL is non-nil, return absolute file names. Otherwise return names\n\ | |
264 | that are relative to the specified directory.\n\ | |
265 | If MATCH is non-nil, mention only file names that match the regexp MATCH.\n\ | |
266 | If NOSORT is non-nil, the list is not sorted--its order is unpredictable.\n\ | |
267 | NOSORT is useful if you plan to sort the result yourself.") | |
268 | (directory, full, match, nosort) | |
269 | Lisp_Object directory, full, match, nosort; | |
270 | { | |
271 | Lisp_Object handler; | |
272 | ||
273 | /* If the file name has special constructs in it, | |
274 | call the corresponding file handler. */ | |
275 | handler = Ffind_file_name_handler (directory, Qdirectory_files); | |
276 | if (!NILP (handler)) | |
277 | { | |
278 | Lisp_Object args[6]; | |
279 | ||
280 | args[0] = handler; | |
281 | args[1] = Qdirectory_files; | |
282 | args[2] = directory; | |
283 | args[3] = full; | |
284 | args[4] = match; | |
285 | args[5] = nosort; | |
286 | return Ffuncall (6, args); | |
287 | } | |
288 | ||
289 | return directory_files_internal (directory, full, match, nosort, 0); | |
290 | } | |
291 | ||
292 | DEFUN ("directory-files-and-attributes", Fdirectory_files_and_attributes, Sdirectory_files_and_attributes, 1, 4, 0, | |
293 | "Return a list of names of files and their attributes in DIRECTORY.\n\ | |
294 | There are three optional arguments:\n\ | |
295 | If FULL is non-nil, return absolute file names. Otherwise return names\n\ | |
296 | that are relative to the specified directory.\n\ | |
297 | If MATCH is non-nil, mention only file names that match the regexp MATCH.\n\ | |
298 | If NOSORT is non-nil, the list is not sorted--its order is unpredictable.\n\ | |
299 | NOSORT is useful if you plan to sort the result yourself.") | |
300 | (directory, full, match, nosort) | |
301 | Lisp_Object directory, full, match, nosort; | |
302 | { | |
303 | Lisp_Object handler; | |
304 | ||
305 | /* If the file name has special constructs in it, | |
306 | call the corresponding file handler. */ | |
307 | handler = Ffind_file_name_handler (directory, Qdirectory_files_and_attributes); | |
308 | if (!NILP (handler)) | |
309 | { | |
310 | Lisp_Object args[6]; | |
311 | ||
312 | args[0] = handler; | |
313 | args[1] = Qdirectory_files_and_attributes; | |
314 | args[2] = directory; | |
315 | args[3] = full; | |
316 | args[4] = match; | |
317 | args[5] = nosort; | |
318 | return Ffuncall (6, args); | |
319 | } | |
320 | ||
321 | return directory_files_internal (directory, full, match, nosort, 1); | |
322 | } | |
323 | ||
14d55bce RS |
324 | \f |
325 | Lisp_Object file_name_completion (); | |
326 | ||
327 | DEFUN ("file-name-completion", Ffile_name_completion, Sfile_name_completion, | |
328 | 2, 2, 0, | |
23bd240f | 329 | "Complete file name FILE in directory DIRECTORY.\n\ |
14d55bce | 330 | Returns the longest string\n\ |
7b6540dd | 331 | common to all file names in DIRECTORY that start with FILE.\n\ |
14d55bce RS |
332 | If there is only one and FILE matches it exactly, returns t.\n\ |
333 | Returns nil if DIR contains no name starting with FILE.") | |
23bd240f EN |
334 | (file, directory) |
335 | Lisp_Object file, directory; | |
14d55bce | 336 | { |
32f4334d | 337 | Lisp_Object handler; |
32f4334d | 338 | |
8436e231 | 339 | /* If the directory name has special constructs in it, |
32f4334d | 340 | call the corresponding file handler. */ |
23bd240f | 341 | handler = Ffind_file_name_handler (directory, Qfile_name_completion); |
32f4334d | 342 | if (!NILP (handler)) |
23bd240f | 343 | return call3 (handler, Qfile_name_completion, file, directory); |
32f4334d | 344 | |
8436e231 RS |
345 | /* If the file name has special constructs in it, |
346 | call the corresponding file handler. */ | |
347 | handler = Ffind_file_name_handler (file, Qfile_name_completion); | |
348 | if (!NILP (handler)) | |
23bd240f | 349 | return call3 (handler, Qfile_name_completion, file, directory); |
8436e231 | 350 | |
23bd240f | 351 | return file_name_completion (file, directory, 0, 0); |
14d55bce RS |
352 | } |
353 | ||
354 | DEFUN ("file-name-all-completions", Ffile_name_all_completions, | |
355 | Sfile_name_all_completions, 2, 2, 0, | |
23bd240f EN |
356 | "Return a list of all completions of file name FILE in directory DIRECTORY.\n\ |
357 | These are all file names in directory DIRECTORY which begin with FILE.") | |
358 | (file, directory) | |
359 | Lisp_Object file, directory; | |
14d55bce | 360 | { |
32f4334d RS |
361 | Lisp_Object handler; |
362 | ||
8436e231 | 363 | /* If the directory name has special constructs in it, |
32f4334d | 364 | call the corresponding file handler. */ |
23bd240f | 365 | handler = Ffind_file_name_handler (directory, Qfile_name_all_completions); |
32f4334d | 366 | if (!NILP (handler)) |
23bd240f | 367 | return call3 (handler, Qfile_name_all_completions, file, directory); |
32f4334d | 368 | |
8436e231 RS |
369 | /* If the file name has special constructs in it, |
370 | call the corresponding file handler. */ | |
371 | handler = Ffind_file_name_handler (file, Qfile_name_all_completions); | |
372 | if (!NILP (handler)) | |
23bd240f | 373 | return call3 (handler, Qfile_name_all_completions, file, directory); |
8436e231 | 374 | |
23bd240f | 375 | return file_name_completion (file, directory, 1, 0); |
14d55bce RS |
376 | } |
377 | ||
dfcf069d AS |
378 | static int file_name_completion_stat (); |
379 | ||
14d55bce RS |
380 | Lisp_Object |
381 | file_name_completion (file, dirname, all_flag, ver_flag) | |
382 | Lisp_Object file, dirname; | |
383 | int all_flag, ver_flag; | |
384 | { | |
385 | DIR *d; | |
386 | DIRENTRY *dp; | |
387 | int bestmatchsize, skip; | |
388 | register int compare, matchsize; | |
389 | unsigned char *p1, *p2; | |
390 | int matchcount = 0; | |
391 | Lisp_Object bestmatch, tem, elt, name; | |
24c2a54f RS |
392 | Lisp_Object encoded_file; |
393 | Lisp_Object encoded_dir; | |
14d55bce RS |
394 | struct stat st; |
395 | int directoryp; | |
396 | int passcount; | |
397 | int count = specpdl_ptr - specpdl; | |
24c2a54f | 398 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5; |
3fcc88cc | 399 | |
14d55bce RS |
400 | #ifdef VMS |
401 | extern DIRENTRY * readdirver (); | |
402 | ||
403 | DIRENTRY *((* readfunc) ()); | |
404 | ||
405 | /* Filename completion on VMS ignores case, since VMS filesys does. */ | |
406 | specbind (Qcompletion_ignore_case, Qt); | |
407 | ||
408 | readfunc = readdir; | |
409 | if (ver_flag) | |
410 | readfunc = readdirver; | |
411 | file = Fupcase (file); | |
412 | #else /* not VMS */ | |
413 | CHECK_STRING (file, 0); | |
414 | #endif /* not VMS */ | |
415 | ||
128ecc89 RS |
416 | #ifdef FILE_SYSTEM_CASE |
417 | file = FILE_SYSTEM_CASE (file); | |
418 | #endif | |
14d55bce | 419 | bestmatch = Qnil; |
24c2a54f RS |
420 | encoded_file = encoded_dir = Qnil; |
421 | GCPRO5 (file, dirname, bestmatch, encoded_file, encoded_dir); | |
3fcc88cc | 422 | dirname = Fexpand_file_name (dirname, Qnil); |
14d55bce | 423 | |
24c2a54f RS |
424 | /* Do completion on the encoded file name |
425 | because the other names in the directory are (we presume) | |
426 | encoded likewise. We decode the completed string at the end. */ | |
427 | encoded_file = ENCODE_FILE (file); | |
428 | ||
429 | encoded_dir = ENCODE_FILE (dirname); | |
430 | ||
14d55bce RS |
431 | /* With passcount = 0, ignore files that end in an ignored extension. |
432 | If nothing found then try again with passcount = 1, don't ignore them. | |
433 | If looking for all completions, start with passcount = 1, | |
434 | so always take even the ignored ones. | |
435 | ||
436 | ** It would not actually be helpful to the user to ignore any possible | |
437 | completions when making a list of them.** */ | |
438 | ||
265a9e55 | 439 | for (passcount = !!all_flag; NILP (bestmatch) && passcount < 2; passcount++) |
14d55bce | 440 | { |
24c2a54f RS |
441 | d = opendir (XSTRING (Fdirectory_file_name (encoded_dir))->data); |
442 | if (!d) | |
14d55bce RS |
443 | report_file_error ("Opening directory", Fcons (dirname, Qnil)); |
444 | ||
445 | /* Loop reading blocks */ | |
446 | /* (att3b compiler bug requires do a null comparison this way) */ | |
447 | while (1) | |
448 | { | |
449 | DIRENTRY *dp; | |
450 | int len; | |
451 | ||
452 | #ifdef VMS | |
453 | dp = (*readfunc) (d); | |
454 | #else | |
455 | dp = readdir (d); | |
456 | #endif | |
457 | if (!dp) break; | |
458 | ||
459 | len = NAMLEN (dp); | |
460 | ||
265a9e55 | 461 | if (!NILP (Vquit_flag) && NILP (Vinhibit_quit)) |
14d55bce | 462 | goto quit; |
128ecc89 | 463 | if (! DIRENTRY_NONEMPTY (dp) |
24c2a54f RS |
464 | || len < XSTRING (encoded_file)->size |
465 | || 0 <= scmp (dp->d_name, XSTRING (encoded_file)->data, | |
466 | XSTRING (encoded_file)->size)) | |
14d55bce RS |
467 | continue; |
468 | ||
24c2a54f | 469 | if (file_name_completion_stat (encoded_dir, dp, &st) < 0) |
14d55bce RS |
470 | continue; |
471 | ||
472 | directoryp = ((st.st_mode & S_IFMT) == S_IFDIR); | |
473 | tem = Qnil; | |
ad456ad4 RS |
474 | if (directoryp) |
475 | { | |
476 | #ifndef TRIVIAL_DIRECTORY_ENTRY | |
477 | #define TRIVIAL_DIRECTORY_ENTRY(n) (!strcmp (n, ".") || !strcmp (n, "..")) | |
478 | #endif | |
479 | /* "." and ".." are never interesting as completions, but are | |
480 | actually in the way in a directory contains only one file. */ | |
481 | if (!passcount && TRIVIAL_DIRECTORY_ENTRY (dp->d_name)) | |
482 | continue; | |
483 | } | |
484 | else | |
14d55bce RS |
485 | { |
486 | /* Compare extensions-to-be-ignored against end of this file name */ | |
487 | /* if name is not an exact match against specified string */ | |
24c2a54f | 488 | if (!passcount && len > XSTRING (encoded_file)->size) |
14d55bce RS |
489 | /* and exit this for loop if a match is found */ |
490 | for (tem = Vcompletion_ignored_extensions; | |
70949dac | 491 | CONSP (tem); tem = XCDR (tem)) |
14d55bce | 492 | { |
70949dac | 493 | elt = XCAR (tem); |
88cf1852 | 494 | if (!STRINGP (elt)) continue; |
14d55bce RS |
495 | skip = len - XSTRING (elt)->size; |
496 | if (skip < 0) continue; | |
497 | ||
498 | if (0 <= scmp (dp->d_name + skip, | |
499 | XSTRING (elt)->data, | |
500 | XSTRING (elt)->size)) | |
501 | continue; | |
502 | break; | |
503 | } | |
504 | } | |
505 | ||
f676868d KH |
506 | /* If an ignored-extensions match was found, |
507 | don't process this name as a completion. */ | |
508 | if (!passcount && CONSP (tem)) | |
509 | continue; | |
510 | ||
511 | if (!passcount) | |
14d55bce | 512 | { |
f676868d KH |
513 | Lisp_Object regexps; |
514 | Lisp_Object zero; | |
617b3bfe | 515 | XSETFASTINT (zero, 0); |
f676868d KH |
516 | |
517 | /* Ignore this element if it fails to match all the regexps. */ | |
518 | for (regexps = Vcompletion_regexp_list; CONSP (regexps); | |
70949dac | 519 | regexps = XCDR (regexps)) |
f676868d | 520 | { |
70949dac | 521 | tem = Fstring_match (XCAR (regexps), elt, zero); |
f676868d KH |
522 | if (NILP (tem)) |
523 | break; | |
524 | } | |
525 | if (CONSP (regexps)) | |
526 | continue; | |
527 | } | |
14d55bce | 528 | |
f676868d | 529 | /* Update computation of how much all possible completions match */ |
14d55bce | 530 | |
f676868d KH |
531 | matchcount++; |
532 | ||
533 | if (all_flag || NILP (bestmatch)) | |
534 | { | |
535 | /* This is a possible completion */ | |
536 | if (directoryp) | |
14d55bce | 537 | { |
f676868d KH |
538 | /* This completion is a directory; make it end with '/' */ |
539 | name = Ffile_name_as_directory (make_string (dp->d_name, len)); | |
540 | } | |
541 | else | |
542 | name = make_string (dp->d_name, len); | |
543 | if (all_flag) | |
544 | { | |
bd33479f | 545 | name = DECODE_FILE (name); |
f676868d | 546 | bestmatch = Fcons (name, bestmatch); |
14d55bce RS |
547 | } |
548 | else | |
549 | { | |
f676868d KH |
550 | bestmatch = name; |
551 | bestmatchsize = XSTRING (name)->size; | |
552 | } | |
553 | } | |
554 | else | |
555 | { | |
556 | compare = min (bestmatchsize, len); | |
557 | p1 = XSTRING (bestmatch)->data; | |
558 | p2 = (unsigned char *) dp->d_name; | |
559 | matchsize = scmp(p1, p2, compare); | |
560 | if (matchsize < 0) | |
561 | matchsize = compare; | |
562 | if (completion_ignore_case) | |
563 | { | |
564 | /* If this is an exact match except for case, | |
565 | use it as the best match rather than one that is not | |
566 | an exact match. This way, we get the case pattern | |
567 | of the actual match. */ | |
f5ec5d3d RS |
568 | /* This tests that the current file is an exact match |
569 | but BESTMATCH is not (it is too long). */ | |
f676868d KH |
570 | if ((matchsize == len |
571 | && matchsize + !!directoryp | |
572 | < XSTRING (bestmatch)->size) | |
573 | || | |
574 | /* If there is no exact match ignoring case, | |
575 | prefer a match that does not change the case | |
576 | of the input. */ | |
f5ec5d3d RS |
577 | /* If there is more than one exact match aside from |
578 | case, and one of them is exact including case, | |
579 | prefer that one. */ | |
580 | /* This == checks that, of current file and BESTMATCH, | |
581 | either both or neither are exact. */ | |
f676868d KH |
582 | (((matchsize == len) |
583 | == | |
584 | (matchsize + !!directoryp | |
585 | == XSTRING (bestmatch)->size)) | |
24c2a54f RS |
586 | && !bcmp (p2, XSTRING (encoded_file)->data, XSTRING (encoded_file)->size) |
587 | && bcmp (p1, XSTRING (encoded_file)->data, XSTRING (encoded_file)->size))) | |
97e98a56 | 588 | { |
f676868d KH |
589 | bestmatch = make_string (dp->d_name, len); |
590 | if (directoryp) | |
591 | bestmatch = Ffile_name_as_directory (bestmatch); | |
97e98a56 | 592 | } |
14d55bce | 593 | } |
f676868d KH |
594 | |
595 | /* If this dirname all matches, see if implicit following | |
596 | slash does too. */ | |
597 | if (directoryp | |
598 | && compare == matchsize | |
599 | && bestmatchsize > matchsize | |
0b39d75d | 600 | && IS_ANY_SEP (p1[matchsize])) |
f676868d KH |
601 | matchsize++; |
602 | bestmatchsize = matchsize; | |
14d55bce RS |
603 | } |
604 | } | |
605 | closedir (d); | |
606 | } | |
607 | ||
3fcc88cc RS |
608 | UNGCPRO; |
609 | bestmatch = unbind_to (count, bestmatch); | |
14d55bce | 610 | |
265a9e55 | 611 | if (all_flag || NILP (bestmatch)) |
24c2a54f | 612 | { |
bd33479f KH |
613 | if (STRINGP (bestmatch)) |
614 | bestmatch = DECODE_FILE (bestmatch); | |
24c2a54f RS |
615 | return bestmatch; |
616 | } | |
14d55bce RS |
617 | if (matchcount == 1 && bestmatchsize == XSTRING (file)->size) |
618 | return Qt; | |
24c2a54f RS |
619 | bestmatch = Fsubstring (bestmatch, make_number (0), |
620 | make_number (bestmatchsize)); | |
621 | /* Now that we got the right initial segment of BESTMATCH, | |
622 | decode it from the coding system in use. */ | |
bd33479f | 623 | bestmatch = DECODE_FILE (bestmatch); |
24c2a54f RS |
624 | return bestmatch; |
625 | ||
14d55bce RS |
626 | quit: |
627 | if (d) closedir (d); | |
628 | Vquit_flag = Qnil; | |
629 | return Fsignal (Qquit, Qnil); | |
630 | } | |
631 | ||
dfcf069d | 632 | static int |
14d55bce RS |
633 | file_name_completion_stat (dirname, dp, st_addr) |
634 | Lisp_Object dirname; | |
635 | DIRENTRY *dp; | |
636 | struct stat *st_addr; | |
637 | { | |
638 | int len = NAMLEN (dp); | |
639 | int pos = XSTRING (dirname)->size; | |
7e3cf34f | 640 | int value; |
14d55bce RS |
641 | char *fullname = (char *) alloca (len + pos + 2); |
642 | ||
04924ee3 RS |
643 | #ifdef MSDOS |
644 | #if __DJGPP__ > 1 | |
645 | /* Some fields of struct stat are *very* expensive to compute on MS-DOS, | |
646 | but aren't required here. Avoid computing the following fields: | |
647 | st_inode, st_size and st_nlink for directories, and the execute bits | |
648 | in st_mode for non-directory files with non-standard extensions. */ | |
649 | ||
650 | unsigned short save_djstat_flags = _djstat_flags; | |
651 | ||
652 | _djstat_flags = _STAT_INODE | _STAT_EXEC_MAGIC | _STAT_DIRSIZE; | |
653 | #endif /* __DJGPP__ > 1 */ | |
654 | #endif /* MSDOS */ | |
655 | ||
14d55bce RS |
656 | bcopy (XSTRING (dirname)->data, fullname, pos); |
657 | #ifndef VMS | |
0b39d75d RS |
658 | if (!IS_DIRECTORY_SEP (fullname[pos - 1])) |
659 | fullname[pos++] = DIRECTORY_SEP; | |
14d55bce RS |
660 | #endif |
661 | ||
662 | bcopy (dp->d_name, fullname + pos, len); | |
663 | fullname[pos + len] = 0; | |
664 | ||
a889bd0e | 665 | #ifdef S_IFLNK |
7e3cf34f RS |
666 | /* We want to return success if a link points to a nonexistent file, |
667 | but we want to return the status for what the link points to, | |
668 | in case it is a directory. */ | |
669 | value = lstat (fullname, st_addr); | |
670 | stat (fullname, st_addr); | |
671 | return value; | |
a889bd0e | 672 | #else |
04924ee3 RS |
673 | value = stat (fullname, st_addr); |
674 | #ifdef MSDOS | |
675 | #if __DJGPP__ > 1 | |
676 | _djstat_flags = save_djstat_flags; | |
677 | #endif /* __DJGPP__ > 1 */ | |
678 | #endif /* MSDOS */ | |
679 | return value; | |
680 | #endif /* S_IFLNK */ | |
14d55bce RS |
681 | } |
682 | \f | |
3ed991aa RS |
683 | #ifdef VMS |
684 | ||
685 | DEFUN ("file-name-all-versions", Ffile_name_all_versions, | |
686 | Sfile_name_all_versions, 2, 2, 0, | |
23bd240f EN |
687 | "Return a list of all versions of file name FILE in directory DIRECTORY.") |
688 | (file, directory) | |
689 | Lisp_Object file, directory; | |
3ed991aa | 690 | { |
23bd240f | 691 | return file_name_completion (file, directory, 1, 1); |
3ed991aa RS |
692 | } |
693 | ||
694 | DEFUN ("file-version-limit", Ffile_version_limit, Sfile_version_limit, 1, 1, 0, | |
695 | "Return the maximum number of versions allowed for FILE.\n\ | |
696 | Returns nil if the file cannot be opened or if there is no version limit.") | |
697 | (filename) | |
698 | Lisp_Object filename; | |
699 | { | |
700 | Lisp_Object retval; | |
701 | struct FAB fab; | |
702 | struct RAB rab; | |
703 | struct XABFHC xabfhc; | |
704 | int status; | |
705 | ||
706 | filename = Fexpand_file_name (filename, Qnil); | |
707 | fab = cc$rms_fab; | |
708 | xabfhc = cc$rms_xabfhc; | |
709 | fab.fab$l_fna = XSTRING (filename)->data; | |
710 | fab.fab$b_fns = strlen (fab.fab$l_fna); | |
711 | fab.fab$l_xab = (char *) &xabfhc; | |
712 | status = sys$open (&fab, 0, 0); | |
713 | if (status != RMS$_NORMAL) /* Probably non-existent file */ | |
714 | return Qnil; | |
715 | sys$close (&fab, 0, 0); | |
716 | if (xabfhc.xab$w_verlimit == 32767) | |
717 | return Qnil; /* No version limit */ | |
718 | else | |
719 | return make_number (xabfhc.xab$w_verlimit); | |
720 | } | |
721 | ||
722 | #endif /* VMS */ | |
723 | \f | |
14d55bce RS |
724 | Lisp_Object |
725 | make_time (time) | |
e5124be7 | 726 | time_t time; |
14d55bce RS |
727 | { |
728 | return Fcons (make_number (time >> 16), | |
729 | Fcons (make_number (time & 0177777), Qnil)); | |
730 | } | |
731 | ||
732 | DEFUN ("file-attributes", Ffile_attributes, Sfile_attributes, 1, 1, 0, | |
733 | "Return a list of attributes of file FILENAME.\n\ | |
734 | Value is nil if specified file cannot be opened.\n\ | |
735 | Otherwise, list elements are:\n\ | |
736 | 0. t for directory, string (name linked to) for symbolic link, or nil.\n\ | |
737 | 1. Number of links to file.\n\ | |
738 | 2. File uid.\n\ | |
739 | 3. File gid.\n\ | |
740 | 4. Last access time, as a list of two integers.\n\ | |
741 | First integer has high-order 16 bits of time, second has low 16 bits.\n\ | |
742 | 5. Last modification time, likewise.\n\ | |
743 | 6. Last status change time, likewise.\n\ | |
cb1846b4 EZ |
744 | 7. Size in bytes.\n\ |
745 | This is a floating point number if the size is too large for an integer.\n\ | |
14d55bce RS |
746 | 8. File modes, as a string of ten letters or dashes as in ls -l.\n\ |
747 | 9. t iff file's gid would change if file were deleted and recreated.\n\ | |
cb1846b4 | 748 | 10. inode number. If inode number is larger than the Emacs integer,\n\ |
6d4e6528 RS |
749 | this is a cons cell containing two integers: first the high part,\n\ |
750 | then the low 16 bits.\n\ | |
14d55bce RS |
751 | 11. Device number.\n\ |
752 | \n\ | |
ccbcf979 | 753 | If file does not exist, returns nil.") |
14d55bce RS |
754 | (filename) |
755 | Lisp_Object filename; | |
756 | { | |
757 | Lisp_Object values[12]; | |
758 | Lisp_Object dirname; | |
24c2a54f | 759 | Lisp_Object encoded; |
14d55bce RS |
760 | struct stat s; |
761 | struct stat sdir; | |
762 | char modes[10]; | |
32f4334d | 763 | Lisp_Object handler; |
14d55bce RS |
764 | |
765 | filename = Fexpand_file_name (filename, Qnil); | |
32f4334d RS |
766 | |
767 | /* If the file name has special constructs in it, | |
768 | call the corresponding file handler. */ | |
a617e913 | 769 | handler = Ffind_file_name_handler (filename, Qfile_attributes); |
32f4334d RS |
770 | if (!NILP (handler)) |
771 | return call2 (handler, Qfile_attributes, filename); | |
772 | ||
24c2a54f RS |
773 | encoded = ENCODE_FILE (filename); |
774 | ||
775 | if (lstat (XSTRING (encoded)->data, &s) < 0) | |
14d55bce RS |
776 | return Qnil; |
777 | ||
778 | switch (s.st_mode & S_IFMT) | |
779 | { | |
780 | default: | |
781 | values[0] = Qnil; break; | |
782 | case S_IFDIR: | |
783 | values[0] = Qt; break; | |
784 | #ifdef S_IFLNK | |
785 | case S_IFLNK: | |
786 | values[0] = Ffile_symlink_p (filename); break; | |
787 | #endif | |
788 | } | |
789 | values[1] = make_number (s.st_nlink); | |
790 | values[2] = make_number (s.st_uid); | |
791 | values[3] = make_number (s.st_gid); | |
792 | values[4] = make_time (s.st_atime); | |
793 | values[5] = make_time (s.st_mtime); | |
794 | values[6] = make_time (s.st_ctime); | |
68c45bf0 | 795 | values[7] = make_number (s.st_size); |
cb1846b4 | 796 | /* If the size is out of range for an integer, return a float. */ |
60fc6069 | 797 | if (XINT (values[7]) != s.st_size) |
cb1846b4 | 798 | values[7] = make_float ((double)s.st_size); |
14d55bce RS |
799 | filemodestring (&s, modes); |
800 | values[8] = make_string (modes, 10); | |
801 | #ifdef BSD4_3 /* Gross kludge to avoid lack of "#if defined(...)" in VMS */ | |
eb8c3be9 | 802 | #define BSD4_2 /* A new meaning to the term `backwards compatibility' */ |
14d55bce RS |
803 | #endif |
804 | #ifdef BSD4_2 /* file gid will be dir gid */ | |
805 | dirname = Ffile_name_directory (filename); | |
24c2a54f RS |
806 | if (! NILP (dirname)) |
807 | encoded = ENCODE_FILE (dirname); | |
808 | if (! NILP (dirname) && stat (XSTRING (encoded)->data, &sdir) == 0) | |
14d55bce RS |
809 | values[9] = (sdir.st_gid != s.st_gid) ? Qt : Qnil; |
810 | else /* if we can't tell, assume worst */ | |
811 | values[9] = Qt; | |
812 | #else /* file gid will be egid */ | |
813 | values[9] = (s.st_gid != getegid ()) ? Qt : Qnil; | |
814 | #endif /* BSD4_2 (or BSD4_3) */ | |
815 | #ifdef BSD4_3 | |
816 | #undef BSD4_2 /* ok, you can look again without throwing up */ | |
817 | #endif | |
ce4200f6 RS |
818 | /* Cast -1 to avoid warning if int is not as wide as VALBITS. */ |
819 | if (s.st_ino & (((EMACS_INT) (-1)) << VALBITS)) | |
4c637faa RS |
820 | /* To allow inode numbers larger than VALBITS, separate the bottom |
821 | 16 bits. */ | |
822 | values[10] = Fcons (make_number (s.st_ino >> 16), | |
823 | make_number (s.st_ino & 0xffff)); | |
824 | else | |
825 | /* But keep the most common cases as integers. */ | |
826 | values[10] = make_number (s.st_ino); | |
68c45bf0 PE |
827 | |
828 | /* Likewise for device. */ | |
829 | if (s.st_dev & (((EMACS_INT) (-1)) << VALBITS)) | |
830 | values[11] = Fcons (make_number (s.st_dev >> 16), | |
831 | make_number (s.st_dev & 0xffff)); | |
832 | else | |
833 | values[11] = make_number (s.st_dev); | |
834 | ||
14d55bce RS |
835 | return Flist (sizeof(values) / sizeof(values[0]), values); |
836 | } | |
4424b255 GV |
837 | |
838 | DEFUN ("file-attributes-lessp", Ffile_attributes_lessp, Sfile_attributes_lessp, 2, 2, 0, | |
839 | "Return t if first arg file attributes list is less than second.\n\ | |
840 | Comparison is in lexicographic order and case is significant.") | |
841 | (f1, f2) | |
842 | Lisp_Object f1, f2; | |
843 | { | |
844 | return Fstring_lessp (Fcar (f1), Fcar (f2)); | |
845 | } | |
14d55bce | 846 | \f |
dfcf069d | 847 | void |
14d55bce RS |
848 | syms_of_dired () |
849 | { | |
32f4334d | 850 | Qdirectory_files = intern ("directory-files"); |
4424b255 | 851 | Qdirectory_files_and_attributes = intern ("directory-files-and-attributes"); |
32f4334d RS |
852 | Qfile_name_completion = intern ("file-name-completion"); |
853 | Qfile_name_all_completions = intern ("file-name-all-completions"); | |
434e6714 | 854 | Qfile_attributes = intern ("file-attributes"); |
4424b255 | 855 | Qfile_attributes_lessp = intern ("file-attributes-lessp"); |
32f4334d | 856 | |
a2d3836c | 857 | staticpro (&Qdirectory_files); |
4424b255 | 858 | staticpro (&Qdirectory_files_and_attributes); |
a2d3836c EN |
859 | staticpro (&Qfile_name_completion); |
860 | staticpro (&Qfile_name_all_completions); | |
861 | staticpro (&Qfile_attributes); | |
4424b255 | 862 | staticpro (&Qfile_attributes_lessp); |
a2d3836c | 863 | |
14d55bce | 864 | defsubr (&Sdirectory_files); |
4424b255 | 865 | defsubr (&Sdirectory_files_and_attributes); |
14d55bce RS |
866 | defsubr (&Sfile_name_completion); |
867 | #ifdef VMS | |
868 | defsubr (&Sfile_name_all_versions); | |
3ed991aa | 869 | defsubr (&Sfile_version_limit); |
14d55bce RS |
870 | #endif /* VMS */ |
871 | defsubr (&Sfile_name_all_completions); | |
872 | defsubr (&Sfile_attributes); | |
4424b255 | 873 | defsubr (&Sfile_attributes_lessp); |
14d55bce RS |
874 | |
875 | #ifdef VMS | |
876 | Qcompletion_ignore_case = intern ("completion-ignore-case"); | |
877 | staticpro (&Qcompletion_ignore_case); | |
878 | #endif /* VMS */ | |
879 | ||
880 | DEFVAR_LISP ("completion-ignored-extensions", &Vcompletion_ignored_extensions, | |
881 | "*Completion ignores filenames ending in any string in this list.\n\ | |
882 | This variable does not affect lists of possible completions,\n\ | |
883 | but does affect the commands that actually do completions."); | |
884 | Vcompletion_ignored_extensions = Qnil; | |
885 | } |