Commit | Line | Data |
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14d55bce | 1 | /* Lisp functions for making directory listings. |
3a22ee35 | 2 | Copyright (C) 1985, 1986, 1993, 1994 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 | ||
3ed991aa RS |
28 | #ifdef VMS |
29 | #include <string.h> | |
30 | #include <rms.h> | |
31 | #include <rmsdef.h> | |
32 | #endif | |
33 | ||
dfcf069d AS |
34 | #ifdef HAVE_UNISTD_H |
35 | #include <unistd.h> | |
36 | #endif | |
37 | ||
d6717cdb JB |
38 | /* The d_nameln member of a struct dirent includes the '\0' character |
39 | on some systems, but not on others. What's worse, you can't tell | |
40 | at compile-time which one it will be, since it really depends on | |
41 | the sort of system providing the filesystem you're reading from, | |
42 | not the system you are running on. Paul Eggert | |
43 | <eggert@bi.twinsun.com> says this occurs when Emacs is running on a | |
44 | SunOS 4.1.2 host, reading a directory that is remote-mounted from a | |
45 | Solaris 2.1 host and is in a native Solaris 2.1 filesystem. | |
46 | ||
47 | Since applying strlen to the name always works, we'll just do that. */ | |
48 | #define NAMLEN(p) strlen (p->d_name) | |
49 | ||
14d55bce RS |
50 | #ifdef SYSV_SYSTEM_DIR |
51 | ||
52 | #include <dirent.h> | |
53 | #define DIRENTRY struct dirent | |
14d55bce | 54 | |
128ecc89 | 55 | #else /* not SYSV_SYSTEM_DIR */ |
14d55bce RS |
56 | |
57 | #ifdef NONSYSTEM_DIR_LIBRARY | |
58 | #include "ndir.h" | |
59 | #else /* not NONSYSTEM_DIR_LIBRARY */ | |
128ecc89 RS |
60 | #ifdef MSDOS |
61 | #include <dirent.h> | |
62 | #else | |
14d55bce | 63 | #include <sys/dir.h> |
128ecc89 | 64 | #endif |
14d55bce RS |
65 | #endif /* not NONSYSTEM_DIR_LIBRARY */ |
66 | ||
128ecc89 | 67 | #ifndef MSDOS |
14d55bce | 68 | #define DIRENTRY struct direct |
14d55bce RS |
69 | |
70 | extern DIR *opendir (); | |
71 | extern struct direct *readdir (); | |
72 | ||
128ecc89 RS |
73 | #endif /* not MSDOS */ |
74 | #endif /* not SYSV_SYSTEM_DIR */ | |
75 | ||
76 | #ifdef MSDOS | |
77 | #define DIRENTRY_NONEMPTY(p) ((p)->d_name[0] != 0) | |
78 | #else | |
79 | #define DIRENTRY_NONEMPTY(p) ((p)->d_ino) | |
14d55bce RS |
80 | #endif |
81 | ||
14d55bce RS |
82 | #include "lisp.h" |
83 | #include "buffer.h" | |
84 | #include "commands.h" | |
bd33479f KH |
85 | #include "charset.h" |
86 | #include "coding.h" | |
14d55bce | 87 | #include "regex.h" |
14d55bce | 88 | |
e50c66d3 KH |
89 | /* Returns a search buffer, with a fastmap allocated and ready to go. */ |
90 | extern struct re_pattern_buffer *compile_pattern (); | |
c7e466e1 | 91 | |
14d55bce RS |
92 | #define min(a, b) ((a) < (b) ? (a) : (b)) |
93 | ||
94 | /* if system does not have symbolic links, it does not have lstat. | |
95 | In that case, use ordinary stat instead. */ | |
96 | ||
97 | #ifndef S_IFLNK | |
98 | #define lstat stat | |
99 | #endif | |
100 | ||
97e98a56 | 101 | extern int completion_ignore_case; |
f676868d | 102 | extern Lisp_Object Vcompletion_regexp_list; |
bd33479f | 103 | extern Lisp_Object Vfile_name_coding_system, Vdefault_file_name_coding_system; |
ccbcf979 | 104 | |
14d55bce | 105 | Lisp_Object Vcompletion_ignored_extensions; |
14d55bce | 106 | Lisp_Object Qcompletion_ignore_case; |
32f4334d RS |
107 | Lisp_Object Qdirectory_files; |
108 | Lisp_Object Qfile_name_completion; | |
109 | Lisp_Object Qfile_name_all_completions; | |
434e6714 | 110 | Lisp_Object Qfile_attributes; |
14d55bce RS |
111 | \f |
112 | DEFUN ("directory-files", Fdirectory_files, Sdirectory_files, 1, 4, 0, | |
113 | "Return a list of names of files in DIRECTORY.\n\ | |
114 | There are three optional arguments:\n\ | |
7b6540dd RS |
115 | If FULL is non-nil, return absolute file names. Otherwise return names\n\ |
116 | that are relative to the specified directory.\n\ | |
117 | If MATCH is non-nil, mention only file names that match the regexp MATCH.\n\ | |
14d55bce RS |
118 | If NOSORT is non-nil, the list is not sorted--its order is unpredictable.\n\ |
119 | NOSORT is useful if you plan to sort the result yourself.") | |
23bd240f EN |
120 | (directory, full, match, nosort) |
121 | Lisp_Object directory, full, match, nosort; | |
14d55bce RS |
122 | { |
123 | DIR *d; | |
5617588f | 124 | int dirnamelen; |
6155fae1 | 125 | Lisp_Object list, name, dirfilename; |
24c2a54f | 126 | Lisp_Object encoded_directory; |
32f4334d | 127 | Lisp_Object handler; |
e50c66d3 | 128 | struct re_pattern_buffer *bufp; |
96d64004 AS |
129 | int needsep = 0; |
130 | struct gcpro gcpro1, gcpro2; | |
32f4334d RS |
131 | |
132 | /* If the file name has special constructs in it, | |
133 | call the corresponding file handler. */ | |
23bd240f | 134 | handler = Ffind_file_name_handler (directory, Qdirectory_files); |
32f4334d RS |
135 | if (!NILP (handler)) |
136 | { | |
137 | Lisp_Object args[6]; | |
138 | ||
139 | args[0] = handler; | |
140 | args[1] = Qdirectory_files; | |
23bd240f | 141 | args[2] = directory; |
32f4334d RS |
142 | args[3] = full; |
143 | args[4] = match; | |
144 | args[5] = nosort; | |
145 | return Ffuncall (6, args); | |
146 | } | |
14d55bce | 147 | |
96d64004 | 148 | /* Because of file name handlers, these functions might call |
6155fae1 | 149 | Ffuncall, and cause a GC. */ |
96d64004 AS |
150 | GCPRO1 (match); |
151 | directory = Fexpand_file_name (directory, Qnil); | |
152 | UNGCPRO; | |
153 | GCPRO2 (match, directory); | |
154 | dirfilename = Fdirectory_file_name (directory); | |
155 | UNGCPRO; | |
6155fae1 | 156 | |
265a9e55 | 157 | if (!NILP (match)) |
14d55bce RS |
158 | { |
159 | CHECK_STRING (match, 3); | |
ebb9e16f JB |
160 | |
161 | /* MATCH might be a flawed regular expression. Rather than | |
8e6208c5 | 162 | catching and signaling our own errors, we just call |
ebb9e16f | 163 | compile_pattern to do the work for us. */ |
c872c6b2 RS |
164 | /* Pass 1 for the MULTIBYTE arg |
165 | because we do make multibyte strings if the contents warrant. */ | |
14d55bce | 166 | #ifdef VMS |
e50c66d3 | 167 | bufp = compile_pattern (match, 0, |
3e937712 | 168 | buffer_defaults.downcase_table, 0, 1); |
14d55bce | 169 | #else |
3e937712 | 170 | bufp = compile_pattern (match, 0, Qnil, 0, 1); |
14d55bce RS |
171 | #endif |
172 | } | |
173 | ||
24c2a54f RS |
174 | dirfilename = ENCODE_FILE (dirfilename); |
175 | ||
176 | encoded_directory = ENCODE_FILE (directory); | |
177 | ||
e50c66d3 | 178 | /* Now *bufp is the compiled form of MATCH; don't call anything |
6155fae1 JB |
179 | which might compile a new regexp until we're done with the loop! */ |
180 | ||
181 | /* Do this opendir after anything which might signal an error; if | |
8e6208c5 | 182 | an error is signaled while the directory stream is open, we |
6155fae1 JB |
183 | have to make sure it gets closed, and setting up an |
184 | unwind_protect to do so would be a pain. */ | |
185 | d = opendir (XSTRING (dirfilename)->data); | |
186 | if (! d) | |
23bd240f | 187 | report_file_error ("Opening directory", Fcons (directory, Qnil)); |
14d55bce RS |
188 | |
189 | list = Qnil; | |
e540cbed | 190 | dirnamelen = STRING_BYTES (XSTRING (encoded_directory)); |
c81a9bdc | 191 | re_match_object = Qt; |
14d55bce | 192 | |
96d64004 AS |
193 | /* Decide whether we need to add a directory separator. */ |
194 | #ifndef VMS | |
195 | if (dirnamelen == 0 | |
196 | || !IS_ANY_SEP (XSTRING (encoded_directory)->data[dirnamelen - 1])) | |
197 | needsep = 1; | |
e540cbed | 198 | #endif /* not VMS */ |
96d64004 AS |
199 | |
200 | GCPRO2 (encoded_directory, list); | |
201 | ||
14d55bce RS |
202 | /* Loop reading blocks */ |
203 | while (1) | |
204 | { | |
205 | DIRENTRY *dp = readdir (d); | |
206 | int len; | |
207 | ||
208 | if (!dp) break; | |
209 | len = NAMLEN (dp); | |
128ecc89 | 210 | if (DIRENTRY_NONEMPTY (dp)) |
14d55bce | 211 | { |
265a9e55 | 212 | if (NILP (match) |
e50c66d3 | 213 | || (0 <= re_search (bufp, dp->d_name, len, 0, len, 0))) |
14d55bce | 214 | { |
265a9e55 | 215 | if (!NILP (full)) |
14d55bce | 216 | { |
5617588f RS |
217 | int afterdirindex = dirnamelen; |
218 | int total = len + dirnamelen; | |
8ec5a404 | 219 | int nchars; |
5617588f | 220 | |
e540cbed KH |
221 | name = make_uninit_multibyte_string (total + needsep, |
222 | total + needsep); | |
24c2a54f | 223 | bcopy (XSTRING (encoded_directory)->data, XSTRING (name)->data, |
5617588f RS |
224 | dirnamelen); |
225 | if (needsep) | |
226 | XSTRING (name)->data[afterdirindex++] = DIRECTORY_SEP; | |
227 | bcopy (dp->d_name, | |
228 | XSTRING (name)->data + afterdirindex, len); | |
96d64004 | 229 | nchars = chars_in_text (XSTRING (name)->data, |
8ec5a404 RS |
230 | afterdirindex + len); |
231 | XSTRING (name)->size = nchars; | |
232 | if (nchars == STRING_BYTES (XSTRING (name))) | |
233 | SET_STRING_BYTES (XSTRING (name), -1); | |
14d55bce RS |
234 | } |
235 | else | |
236 | name = make_string (dp->d_name, len); | |
bd33479f | 237 | name = DECODE_FILE (name); |
14d55bce RS |
238 | list = Fcons (name, list); |
239 | } | |
240 | } | |
241 | } | |
242 | closedir (d); | |
96d64004 | 243 | UNGCPRO; |
265a9e55 | 244 | if (!NILP (nosort)) |
14d55bce RS |
245 | return list; |
246 | return Fsort (Fnreverse (list), Qstring_lessp); | |
247 | } | |
248 | \f | |
249 | Lisp_Object file_name_completion (); | |
250 | ||
251 | DEFUN ("file-name-completion", Ffile_name_completion, Sfile_name_completion, | |
252 | 2, 2, 0, | |
23bd240f | 253 | "Complete file name FILE in directory DIRECTORY.\n\ |
14d55bce | 254 | Returns the longest string\n\ |
7b6540dd | 255 | common to all file names in DIRECTORY that start with FILE.\n\ |
14d55bce RS |
256 | If there is only one and FILE matches it exactly, returns t.\n\ |
257 | Returns nil if DIR contains no name starting with FILE.") | |
23bd240f EN |
258 | (file, directory) |
259 | Lisp_Object file, directory; | |
14d55bce | 260 | { |
32f4334d | 261 | Lisp_Object handler; |
32f4334d | 262 | |
8436e231 | 263 | /* If the directory name has special constructs in it, |
32f4334d | 264 | call the corresponding file handler. */ |
23bd240f | 265 | handler = Ffind_file_name_handler (directory, Qfile_name_completion); |
32f4334d | 266 | if (!NILP (handler)) |
23bd240f | 267 | return call3 (handler, Qfile_name_completion, file, directory); |
32f4334d | 268 | |
8436e231 RS |
269 | /* If the file name has special constructs in it, |
270 | call the corresponding file handler. */ | |
271 | handler = Ffind_file_name_handler (file, Qfile_name_completion); | |
272 | if (!NILP (handler)) | |
23bd240f | 273 | return call3 (handler, Qfile_name_completion, file, directory); |
8436e231 | 274 | |
23bd240f | 275 | return file_name_completion (file, directory, 0, 0); |
14d55bce RS |
276 | } |
277 | ||
278 | DEFUN ("file-name-all-completions", Ffile_name_all_completions, | |
279 | Sfile_name_all_completions, 2, 2, 0, | |
23bd240f EN |
280 | "Return a list of all completions of file name FILE in directory DIRECTORY.\n\ |
281 | These are all file names in directory DIRECTORY which begin with FILE.") | |
282 | (file, directory) | |
283 | Lisp_Object file, directory; | |
14d55bce | 284 | { |
32f4334d RS |
285 | Lisp_Object handler; |
286 | ||
8436e231 | 287 | /* If the directory name has special constructs in it, |
32f4334d | 288 | call the corresponding file handler. */ |
23bd240f | 289 | handler = Ffind_file_name_handler (directory, Qfile_name_all_completions); |
32f4334d | 290 | if (!NILP (handler)) |
23bd240f | 291 | return call3 (handler, Qfile_name_all_completions, file, directory); |
32f4334d | 292 | |
8436e231 RS |
293 | /* If the file name has special constructs in it, |
294 | call the corresponding file handler. */ | |
295 | handler = Ffind_file_name_handler (file, Qfile_name_all_completions); | |
296 | if (!NILP (handler)) | |
23bd240f | 297 | return call3 (handler, Qfile_name_all_completions, file, directory); |
8436e231 | 298 | |
23bd240f | 299 | return file_name_completion (file, directory, 1, 0); |
14d55bce RS |
300 | } |
301 | ||
dfcf069d AS |
302 | static int file_name_completion_stat (); |
303 | ||
14d55bce RS |
304 | Lisp_Object |
305 | file_name_completion (file, dirname, all_flag, ver_flag) | |
306 | Lisp_Object file, dirname; | |
307 | int all_flag, ver_flag; | |
308 | { | |
309 | DIR *d; | |
310 | DIRENTRY *dp; | |
311 | int bestmatchsize, skip; | |
312 | register int compare, matchsize; | |
313 | unsigned char *p1, *p2; | |
314 | int matchcount = 0; | |
315 | Lisp_Object bestmatch, tem, elt, name; | |
24c2a54f RS |
316 | Lisp_Object encoded_file; |
317 | Lisp_Object encoded_dir; | |
14d55bce RS |
318 | struct stat st; |
319 | int directoryp; | |
320 | int passcount; | |
321 | int count = specpdl_ptr - specpdl; | |
24c2a54f | 322 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5; |
3fcc88cc | 323 | |
14d55bce RS |
324 | #ifdef VMS |
325 | extern DIRENTRY * readdirver (); | |
326 | ||
327 | DIRENTRY *((* readfunc) ()); | |
328 | ||
329 | /* Filename completion on VMS ignores case, since VMS filesys does. */ | |
330 | specbind (Qcompletion_ignore_case, Qt); | |
331 | ||
332 | readfunc = readdir; | |
333 | if (ver_flag) | |
334 | readfunc = readdirver; | |
335 | file = Fupcase (file); | |
336 | #else /* not VMS */ | |
337 | CHECK_STRING (file, 0); | |
338 | #endif /* not VMS */ | |
339 | ||
128ecc89 RS |
340 | #ifdef FILE_SYSTEM_CASE |
341 | file = FILE_SYSTEM_CASE (file); | |
342 | #endif | |
14d55bce | 343 | bestmatch = Qnil; |
24c2a54f RS |
344 | encoded_file = encoded_dir = Qnil; |
345 | GCPRO5 (file, dirname, bestmatch, encoded_file, encoded_dir); | |
3fcc88cc | 346 | dirname = Fexpand_file_name (dirname, Qnil); |
14d55bce | 347 | |
24c2a54f RS |
348 | /* Do completion on the encoded file name |
349 | because the other names in the directory are (we presume) | |
350 | encoded likewise. We decode the completed string at the end. */ | |
351 | encoded_file = ENCODE_FILE (file); | |
352 | ||
353 | encoded_dir = ENCODE_FILE (dirname); | |
354 | ||
14d55bce RS |
355 | /* With passcount = 0, ignore files that end in an ignored extension. |
356 | If nothing found then try again with passcount = 1, don't ignore them. | |
357 | If looking for all completions, start with passcount = 1, | |
358 | so always take even the ignored ones. | |
359 | ||
360 | ** It would not actually be helpful to the user to ignore any possible | |
361 | completions when making a list of them.** */ | |
362 | ||
265a9e55 | 363 | for (passcount = !!all_flag; NILP (bestmatch) && passcount < 2; passcount++) |
14d55bce | 364 | { |
24c2a54f RS |
365 | d = opendir (XSTRING (Fdirectory_file_name (encoded_dir))->data); |
366 | if (!d) | |
14d55bce RS |
367 | report_file_error ("Opening directory", Fcons (dirname, Qnil)); |
368 | ||
369 | /* Loop reading blocks */ | |
370 | /* (att3b compiler bug requires do a null comparison this way) */ | |
371 | while (1) | |
372 | { | |
373 | DIRENTRY *dp; | |
374 | int len; | |
375 | ||
376 | #ifdef VMS | |
377 | dp = (*readfunc) (d); | |
378 | #else | |
379 | dp = readdir (d); | |
380 | #endif | |
381 | if (!dp) break; | |
382 | ||
383 | len = NAMLEN (dp); | |
384 | ||
265a9e55 | 385 | if (!NILP (Vquit_flag) && NILP (Vinhibit_quit)) |
14d55bce | 386 | goto quit; |
128ecc89 | 387 | if (! DIRENTRY_NONEMPTY (dp) |
24c2a54f RS |
388 | || len < XSTRING (encoded_file)->size |
389 | || 0 <= scmp (dp->d_name, XSTRING (encoded_file)->data, | |
390 | XSTRING (encoded_file)->size)) | |
14d55bce RS |
391 | continue; |
392 | ||
24c2a54f | 393 | if (file_name_completion_stat (encoded_dir, dp, &st) < 0) |
14d55bce RS |
394 | continue; |
395 | ||
396 | directoryp = ((st.st_mode & S_IFMT) == S_IFDIR); | |
397 | tem = Qnil; | |
ad456ad4 RS |
398 | if (directoryp) |
399 | { | |
400 | #ifndef TRIVIAL_DIRECTORY_ENTRY | |
401 | #define TRIVIAL_DIRECTORY_ENTRY(n) (!strcmp (n, ".") || !strcmp (n, "..")) | |
402 | #endif | |
403 | /* "." and ".." are never interesting as completions, but are | |
404 | actually in the way in a directory contains only one file. */ | |
405 | if (!passcount && TRIVIAL_DIRECTORY_ENTRY (dp->d_name)) | |
406 | continue; | |
407 | } | |
408 | else | |
14d55bce RS |
409 | { |
410 | /* Compare extensions-to-be-ignored against end of this file name */ | |
411 | /* if name is not an exact match against specified string */ | |
24c2a54f | 412 | if (!passcount && len > XSTRING (encoded_file)->size) |
14d55bce RS |
413 | /* and exit this for loop if a match is found */ |
414 | for (tem = Vcompletion_ignored_extensions; | |
415 | CONSP (tem); tem = XCONS (tem)->cdr) | |
416 | { | |
417 | elt = XCONS (tem)->car; | |
88cf1852 | 418 | if (!STRINGP (elt)) continue; |
14d55bce RS |
419 | skip = len - XSTRING (elt)->size; |
420 | if (skip < 0) continue; | |
421 | ||
422 | if (0 <= scmp (dp->d_name + skip, | |
423 | XSTRING (elt)->data, | |
424 | XSTRING (elt)->size)) | |
425 | continue; | |
426 | break; | |
427 | } | |
428 | } | |
429 | ||
f676868d KH |
430 | /* If an ignored-extensions match was found, |
431 | don't process this name as a completion. */ | |
432 | if (!passcount && CONSP (tem)) | |
433 | continue; | |
434 | ||
435 | if (!passcount) | |
14d55bce | 436 | { |
f676868d KH |
437 | Lisp_Object regexps; |
438 | Lisp_Object zero; | |
617b3bfe | 439 | XSETFASTINT (zero, 0); |
f676868d KH |
440 | |
441 | /* Ignore this element if it fails to match all the regexps. */ | |
442 | for (regexps = Vcompletion_regexp_list; CONSP (regexps); | |
443 | regexps = XCONS (regexps)->cdr) | |
444 | { | |
445 | tem = Fstring_match (XCONS (regexps)->car, elt, zero); | |
446 | if (NILP (tem)) | |
447 | break; | |
448 | } | |
449 | if (CONSP (regexps)) | |
450 | continue; | |
451 | } | |
14d55bce | 452 | |
f676868d | 453 | /* Update computation of how much all possible completions match */ |
14d55bce | 454 | |
f676868d KH |
455 | matchcount++; |
456 | ||
457 | if (all_flag || NILP (bestmatch)) | |
458 | { | |
459 | /* This is a possible completion */ | |
460 | if (directoryp) | |
14d55bce | 461 | { |
f676868d KH |
462 | /* This completion is a directory; make it end with '/' */ |
463 | name = Ffile_name_as_directory (make_string (dp->d_name, len)); | |
464 | } | |
465 | else | |
466 | name = make_string (dp->d_name, len); | |
467 | if (all_flag) | |
468 | { | |
bd33479f | 469 | name = DECODE_FILE (name); |
f676868d | 470 | bestmatch = Fcons (name, bestmatch); |
14d55bce RS |
471 | } |
472 | else | |
473 | { | |
f676868d KH |
474 | bestmatch = name; |
475 | bestmatchsize = XSTRING (name)->size; | |
476 | } | |
477 | } | |
478 | else | |
479 | { | |
480 | compare = min (bestmatchsize, len); | |
481 | p1 = XSTRING (bestmatch)->data; | |
482 | p2 = (unsigned char *) dp->d_name; | |
483 | matchsize = scmp(p1, p2, compare); | |
484 | if (matchsize < 0) | |
485 | matchsize = compare; | |
486 | if (completion_ignore_case) | |
487 | { | |
488 | /* If this is an exact match except for case, | |
489 | use it as the best match rather than one that is not | |
490 | an exact match. This way, we get the case pattern | |
491 | of the actual match. */ | |
f5ec5d3d RS |
492 | /* This tests that the current file is an exact match |
493 | but BESTMATCH is not (it is too long). */ | |
f676868d KH |
494 | if ((matchsize == len |
495 | && matchsize + !!directoryp | |
496 | < XSTRING (bestmatch)->size) | |
497 | || | |
498 | /* If there is no exact match ignoring case, | |
499 | prefer a match that does not change the case | |
500 | of the input. */ | |
f5ec5d3d RS |
501 | /* If there is more than one exact match aside from |
502 | case, and one of them is exact including case, | |
503 | prefer that one. */ | |
504 | /* This == checks that, of current file and BESTMATCH, | |
505 | either both or neither are exact. */ | |
f676868d KH |
506 | (((matchsize == len) |
507 | == | |
508 | (matchsize + !!directoryp | |
509 | == XSTRING (bestmatch)->size)) | |
24c2a54f RS |
510 | && !bcmp (p2, XSTRING (encoded_file)->data, XSTRING (encoded_file)->size) |
511 | && bcmp (p1, XSTRING (encoded_file)->data, XSTRING (encoded_file)->size))) | |
97e98a56 | 512 | { |
f676868d KH |
513 | bestmatch = make_string (dp->d_name, len); |
514 | if (directoryp) | |
515 | bestmatch = Ffile_name_as_directory (bestmatch); | |
97e98a56 | 516 | } |
14d55bce | 517 | } |
f676868d KH |
518 | |
519 | /* If this dirname all matches, see if implicit following | |
520 | slash does too. */ | |
521 | if (directoryp | |
522 | && compare == matchsize | |
523 | && bestmatchsize > matchsize | |
0b39d75d | 524 | && IS_ANY_SEP (p1[matchsize])) |
f676868d KH |
525 | matchsize++; |
526 | bestmatchsize = matchsize; | |
14d55bce RS |
527 | } |
528 | } | |
529 | closedir (d); | |
530 | } | |
531 | ||
3fcc88cc RS |
532 | UNGCPRO; |
533 | bestmatch = unbind_to (count, bestmatch); | |
14d55bce | 534 | |
265a9e55 | 535 | if (all_flag || NILP (bestmatch)) |
24c2a54f | 536 | { |
bd33479f KH |
537 | if (STRINGP (bestmatch)) |
538 | bestmatch = DECODE_FILE (bestmatch); | |
24c2a54f RS |
539 | return bestmatch; |
540 | } | |
14d55bce RS |
541 | if (matchcount == 1 && bestmatchsize == XSTRING (file)->size) |
542 | return Qt; | |
24c2a54f RS |
543 | bestmatch = Fsubstring (bestmatch, make_number (0), |
544 | make_number (bestmatchsize)); | |
545 | /* Now that we got the right initial segment of BESTMATCH, | |
546 | decode it from the coding system in use. */ | |
bd33479f | 547 | bestmatch = DECODE_FILE (bestmatch); |
24c2a54f RS |
548 | return bestmatch; |
549 | ||
14d55bce RS |
550 | quit: |
551 | if (d) closedir (d); | |
552 | Vquit_flag = Qnil; | |
553 | return Fsignal (Qquit, Qnil); | |
554 | } | |
555 | ||
dfcf069d | 556 | static int |
14d55bce RS |
557 | file_name_completion_stat (dirname, dp, st_addr) |
558 | Lisp_Object dirname; | |
559 | DIRENTRY *dp; | |
560 | struct stat *st_addr; | |
561 | { | |
562 | int len = NAMLEN (dp); | |
563 | int pos = XSTRING (dirname)->size; | |
7e3cf34f | 564 | int value; |
14d55bce RS |
565 | char *fullname = (char *) alloca (len + pos + 2); |
566 | ||
04924ee3 RS |
567 | #ifdef MSDOS |
568 | #if __DJGPP__ > 1 | |
569 | /* Some fields of struct stat are *very* expensive to compute on MS-DOS, | |
570 | but aren't required here. Avoid computing the following fields: | |
571 | st_inode, st_size and st_nlink for directories, and the execute bits | |
572 | in st_mode for non-directory files with non-standard extensions. */ | |
573 | ||
574 | unsigned short save_djstat_flags = _djstat_flags; | |
575 | ||
576 | _djstat_flags = _STAT_INODE | _STAT_EXEC_MAGIC | _STAT_DIRSIZE; | |
577 | #endif /* __DJGPP__ > 1 */ | |
578 | #endif /* MSDOS */ | |
579 | ||
14d55bce RS |
580 | bcopy (XSTRING (dirname)->data, fullname, pos); |
581 | #ifndef VMS | |
0b39d75d RS |
582 | if (!IS_DIRECTORY_SEP (fullname[pos - 1])) |
583 | fullname[pos++] = DIRECTORY_SEP; | |
14d55bce RS |
584 | #endif |
585 | ||
586 | bcopy (dp->d_name, fullname + pos, len); | |
587 | fullname[pos + len] = 0; | |
588 | ||
a889bd0e | 589 | #ifdef S_IFLNK |
7e3cf34f RS |
590 | /* We want to return success if a link points to a nonexistent file, |
591 | but we want to return the status for what the link points to, | |
592 | in case it is a directory. */ | |
593 | value = lstat (fullname, st_addr); | |
594 | stat (fullname, st_addr); | |
595 | return value; | |
a889bd0e | 596 | #else |
04924ee3 RS |
597 | value = stat (fullname, st_addr); |
598 | #ifdef MSDOS | |
599 | #if __DJGPP__ > 1 | |
600 | _djstat_flags = save_djstat_flags; | |
601 | #endif /* __DJGPP__ > 1 */ | |
602 | #endif /* MSDOS */ | |
603 | return value; | |
604 | #endif /* S_IFLNK */ | |
14d55bce RS |
605 | } |
606 | \f | |
3ed991aa RS |
607 | #ifdef VMS |
608 | ||
609 | DEFUN ("file-name-all-versions", Ffile_name_all_versions, | |
610 | Sfile_name_all_versions, 2, 2, 0, | |
23bd240f EN |
611 | "Return a list of all versions of file name FILE in directory DIRECTORY.") |
612 | (file, directory) | |
613 | Lisp_Object file, directory; | |
3ed991aa | 614 | { |
23bd240f | 615 | return file_name_completion (file, directory, 1, 1); |
3ed991aa RS |
616 | } |
617 | ||
618 | DEFUN ("file-version-limit", Ffile_version_limit, Sfile_version_limit, 1, 1, 0, | |
619 | "Return the maximum number of versions allowed for FILE.\n\ | |
620 | Returns nil if the file cannot be opened or if there is no version limit.") | |
621 | (filename) | |
622 | Lisp_Object filename; | |
623 | { | |
624 | Lisp_Object retval; | |
625 | struct FAB fab; | |
626 | struct RAB rab; | |
627 | struct XABFHC xabfhc; | |
628 | int status; | |
629 | ||
630 | filename = Fexpand_file_name (filename, Qnil); | |
631 | fab = cc$rms_fab; | |
632 | xabfhc = cc$rms_xabfhc; | |
633 | fab.fab$l_fna = XSTRING (filename)->data; | |
634 | fab.fab$b_fns = strlen (fab.fab$l_fna); | |
635 | fab.fab$l_xab = (char *) &xabfhc; | |
636 | status = sys$open (&fab, 0, 0); | |
637 | if (status != RMS$_NORMAL) /* Probably non-existent file */ | |
638 | return Qnil; | |
639 | sys$close (&fab, 0, 0); | |
640 | if (xabfhc.xab$w_verlimit == 32767) | |
641 | return Qnil; /* No version limit */ | |
642 | else | |
643 | return make_number (xabfhc.xab$w_verlimit); | |
644 | } | |
645 | ||
646 | #endif /* VMS */ | |
647 | \f | |
14d55bce RS |
648 | Lisp_Object |
649 | make_time (time) | |
650 | int time; | |
651 | { | |
652 | return Fcons (make_number (time >> 16), | |
653 | Fcons (make_number (time & 0177777), Qnil)); | |
654 | } | |
655 | ||
656 | DEFUN ("file-attributes", Ffile_attributes, Sfile_attributes, 1, 1, 0, | |
657 | "Return a list of attributes of file FILENAME.\n\ | |
658 | Value is nil if specified file cannot be opened.\n\ | |
659 | Otherwise, list elements are:\n\ | |
660 | 0. t for directory, string (name linked to) for symbolic link, or nil.\n\ | |
661 | 1. Number of links to file.\n\ | |
662 | 2. File uid.\n\ | |
663 | 3. File gid.\n\ | |
664 | 4. Last access time, as a list of two integers.\n\ | |
665 | First integer has high-order 16 bits of time, second has low 16 bits.\n\ | |
666 | 5. Last modification time, likewise.\n\ | |
667 | 6. Last status change time, likewise.\n\ | |
60fc6069 | 668 | 7. Size in bytes (-1, if number is out of range).\n\ |
14d55bce RS |
669 | 8. File modes, as a string of ten letters or dashes as in ls -l.\n\ |
670 | 9. t iff file's gid would change if file were deleted and recreated.\n\ | |
671 | 10. inode number.\n\ | |
672 | 11. Device number.\n\ | |
673 | \n\ | |
ccbcf979 | 674 | If file does not exist, returns nil.") |
14d55bce RS |
675 | (filename) |
676 | Lisp_Object filename; | |
677 | { | |
678 | Lisp_Object values[12]; | |
679 | Lisp_Object dirname; | |
24c2a54f | 680 | Lisp_Object encoded; |
14d55bce RS |
681 | struct stat s; |
682 | struct stat sdir; | |
683 | char modes[10]; | |
32f4334d | 684 | Lisp_Object handler; |
14d55bce RS |
685 | |
686 | filename = Fexpand_file_name (filename, Qnil); | |
32f4334d RS |
687 | |
688 | /* If the file name has special constructs in it, | |
689 | call the corresponding file handler. */ | |
a617e913 | 690 | handler = Ffind_file_name_handler (filename, Qfile_attributes); |
32f4334d RS |
691 | if (!NILP (handler)) |
692 | return call2 (handler, Qfile_attributes, filename); | |
693 | ||
24c2a54f RS |
694 | encoded = ENCODE_FILE (filename); |
695 | ||
696 | if (lstat (XSTRING (encoded)->data, &s) < 0) | |
14d55bce RS |
697 | return Qnil; |
698 | ||
699 | switch (s.st_mode & S_IFMT) | |
700 | { | |
701 | default: | |
702 | values[0] = Qnil; break; | |
703 | case S_IFDIR: | |
704 | values[0] = Qt; break; | |
705 | #ifdef S_IFLNK | |
706 | case S_IFLNK: | |
707 | values[0] = Ffile_symlink_p (filename); break; | |
708 | #endif | |
709 | } | |
710 | values[1] = make_number (s.st_nlink); | |
711 | values[2] = make_number (s.st_uid); | |
712 | values[3] = make_number (s.st_gid); | |
713 | values[4] = make_time (s.st_atime); | |
714 | values[5] = make_time (s.st_mtime); | |
715 | values[6] = make_time (s.st_ctime); | |
ed2ef6c9 | 716 | values[7] = make_number ((int) s.st_size); |
60fc6069 RS |
717 | /* If the size is out of range, give back -1. */ |
718 | if (XINT (values[7]) != s.st_size) | |
719 | XSETINT (values[7], -1); | |
14d55bce RS |
720 | filemodestring (&s, modes); |
721 | values[8] = make_string (modes, 10); | |
722 | #ifdef BSD4_3 /* Gross kludge to avoid lack of "#if defined(...)" in VMS */ | |
eb8c3be9 | 723 | #define BSD4_2 /* A new meaning to the term `backwards compatibility' */ |
14d55bce RS |
724 | #endif |
725 | #ifdef BSD4_2 /* file gid will be dir gid */ | |
726 | dirname = Ffile_name_directory (filename); | |
24c2a54f RS |
727 | if (! NILP (dirname)) |
728 | encoded = ENCODE_FILE (dirname); | |
729 | if (! NILP (dirname) && stat (XSTRING (encoded)->data, &sdir) == 0) | |
14d55bce RS |
730 | values[9] = (sdir.st_gid != s.st_gid) ? Qt : Qnil; |
731 | else /* if we can't tell, assume worst */ | |
732 | values[9] = Qt; | |
733 | #else /* file gid will be egid */ | |
734 | values[9] = (s.st_gid != getegid ()) ? Qt : Qnil; | |
735 | #endif /* BSD4_2 (or BSD4_3) */ | |
736 | #ifdef BSD4_3 | |
737 | #undef BSD4_2 /* ok, you can look again without throwing up */ | |
738 | #endif | |
ce4200f6 RS |
739 | /* Cast -1 to avoid warning if int is not as wide as VALBITS. */ |
740 | if (s.st_ino & (((EMACS_INT) (-1)) << VALBITS)) | |
4c637faa RS |
741 | /* To allow inode numbers larger than VALBITS, separate the bottom |
742 | 16 bits. */ | |
743 | values[10] = Fcons (make_number (s.st_ino >> 16), | |
744 | make_number (s.st_ino & 0xffff)); | |
745 | else | |
746 | /* But keep the most common cases as integers. */ | |
747 | values[10] = make_number (s.st_ino); | |
14d55bce RS |
748 | values[11] = make_number (s.st_dev); |
749 | return Flist (sizeof(values) / sizeof(values[0]), values); | |
750 | } | |
751 | \f | |
dfcf069d | 752 | void |
14d55bce RS |
753 | syms_of_dired () |
754 | { | |
32f4334d RS |
755 | Qdirectory_files = intern ("directory-files"); |
756 | Qfile_name_completion = intern ("file-name-completion"); | |
757 | Qfile_name_all_completions = intern ("file-name-all-completions"); | |
434e6714 | 758 | Qfile_attributes = intern ("file-attributes"); |
32f4334d | 759 | |
a2d3836c EN |
760 | staticpro (&Qdirectory_files); |
761 | staticpro (&Qfile_name_completion); | |
762 | staticpro (&Qfile_name_all_completions); | |
763 | staticpro (&Qfile_attributes); | |
764 | ||
14d55bce RS |
765 | defsubr (&Sdirectory_files); |
766 | defsubr (&Sfile_name_completion); | |
767 | #ifdef VMS | |
768 | defsubr (&Sfile_name_all_versions); | |
3ed991aa | 769 | defsubr (&Sfile_version_limit); |
14d55bce RS |
770 | #endif /* VMS */ |
771 | defsubr (&Sfile_name_all_completions); | |
772 | defsubr (&Sfile_attributes); | |
773 | ||
774 | #ifdef VMS | |
775 | Qcompletion_ignore_case = intern ("completion-ignore-case"); | |
776 | staticpro (&Qcompletion_ignore_case); | |
777 | #endif /* VMS */ | |
778 | ||
779 | DEFVAR_LISP ("completion-ignored-extensions", &Vcompletion_ignored_extensions, | |
780 | "*Completion ignores filenames ending in any string in this list.\n\ | |
781 | This variable does not affect lists of possible completions,\n\ | |
782 | but does affect the commands that actually do completions."); | |
783 | Vcompletion_ignored_extensions = Qnil; | |
784 | } |