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 | ||
d6717cdb JB |
34 | /* The d_nameln member of a struct dirent includes the '\0' character |
35 | on some systems, but not on others. What's worse, you can't tell | |
36 | at compile-time which one it will be, since it really depends on | |
37 | the sort of system providing the filesystem you're reading from, | |
38 | not the system you are running on. Paul Eggert | |
39 | <eggert@bi.twinsun.com> says this occurs when Emacs is running on a | |
40 | SunOS 4.1.2 host, reading a directory that is remote-mounted from a | |
41 | Solaris 2.1 host and is in a native Solaris 2.1 filesystem. | |
42 | ||
43 | Since applying strlen to the name always works, we'll just do that. */ | |
44 | #define NAMLEN(p) strlen (p->d_name) | |
45 | ||
14d55bce RS |
46 | #ifdef SYSV_SYSTEM_DIR |
47 | ||
48 | #include <dirent.h> | |
49 | #define DIRENTRY struct dirent | |
14d55bce | 50 | |
128ecc89 | 51 | #else /* not SYSV_SYSTEM_DIR */ |
14d55bce RS |
52 | |
53 | #ifdef NONSYSTEM_DIR_LIBRARY | |
54 | #include "ndir.h" | |
55 | #else /* not NONSYSTEM_DIR_LIBRARY */ | |
128ecc89 RS |
56 | #ifdef MSDOS |
57 | #include <dirent.h> | |
58 | #else | |
14d55bce | 59 | #include <sys/dir.h> |
128ecc89 | 60 | #endif |
14d55bce RS |
61 | #endif /* not NONSYSTEM_DIR_LIBRARY */ |
62 | ||
128ecc89 | 63 | #ifndef MSDOS |
14d55bce | 64 | #define DIRENTRY struct direct |
14d55bce RS |
65 | |
66 | extern DIR *opendir (); | |
67 | extern struct direct *readdir (); | |
68 | ||
128ecc89 RS |
69 | #endif /* not MSDOS */ |
70 | #endif /* not SYSV_SYSTEM_DIR */ | |
71 | ||
72 | #ifdef MSDOS | |
73 | #define DIRENTRY_NONEMPTY(p) ((p)->d_name[0] != 0) | |
74 | #else | |
75 | #define DIRENTRY_NONEMPTY(p) ((p)->d_ino) | |
14d55bce RS |
76 | #endif |
77 | ||
14d55bce RS |
78 | #include "lisp.h" |
79 | #include "buffer.h" | |
80 | #include "commands.h" | |
81 | ||
82 | #include "regex.h" | |
14d55bce | 83 | |
e50c66d3 KH |
84 | /* Returns a search buffer, with a fastmap allocated and ready to go. */ |
85 | extern struct re_pattern_buffer *compile_pattern (); | |
c7e466e1 | 86 | |
14d55bce RS |
87 | #define min(a, b) ((a) < (b) ? (a) : (b)) |
88 | ||
24c2a54f RS |
89 | /* Encode the file name NAME using the specified coding system |
90 | for file names, if any. */ | |
91 | #define ENCODE_FILE(name) \ | |
92 | (! NILP (Vfile_name_coding_system) \ | |
93 | && XFASTINT (Vfile_name_coding_system) != 0 \ | |
94 | ? Fencode_coding_string (name, Vfile_name_coding_system, Qt) \ | |
95 | : name) | |
96 | ||
14d55bce RS |
97 | /* if system does not have symbolic links, it does not have lstat. |
98 | In that case, use ordinary stat instead. */ | |
99 | ||
100 | #ifndef S_IFLNK | |
101 | #define lstat stat | |
102 | #endif | |
103 | ||
97e98a56 | 104 | extern int completion_ignore_case; |
f676868d | 105 | extern Lisp_Object Vcompletion_regexp_list; |
24c2a54f | 106 | extern Lisp_Object Vfile_name_coding_system; |
ccbcf979 | 107 | |
14d55bce | 108 | Lisp_Object Vcompletion_ignored_extensions; |
14d55bce | 109 | Lisp_Object Qcompletion_ignore_case; |
32f4334d RS |
110 | Lisp_Object Qdirectory_files; |
111 | Lisp_Object Qfile_name_completion; | |
112 | Lisp_Object Qfile_name_all_completions; | |
434e6714 | 113 | Lisp_Object Qfile_attributes; |
14d55bce RS |
114 | \f |
115 | DEFUN ("directory-files", Fdirectory_files, Sdirectory_files, 1, 4, 0, | |
116 | "Return a list of names of files in DIRECTORY.\n\ | |
117 | There are three optional arguments:\n\ | |
7b6540dd RS |
118 | If FULL is non-nil, return absolute file names. Otherwise return names\n\ |
119 | that are relative to the specified directory.\n\ | |
120 | If MATCH is non-nil, mention only file names that match the regexp MATCH.\n\ | |
14d55bce RS |
121 | If NOSORT is non-nil, the list is not sorted--its order is unpredictable.\n\ |
122 | NOSORT is useful if you plan to sort the result yourself.") | |
23bd240f EN |
123 | (directory, full, match, nosort) |
124 | Lisp_Object directory, full, match, nosort; | |
14d55bce RS |
125 | { |
126 | DIR *d; | |
5617588f | 127 | int dirnamelen; |
6155fae1 | 128 | Lisp_Object list, name, dirfilename; |
24c2a54f | 129 | Lisp_Object encoded_directory; |
32f4334d | 130 | Lisp_Object handler; |
e50c66d3 | 131 | struct re_pattern_buffer *bufp; |
32f4334d RS |
132 | |
133 | /* If the file name has special constructs in it, | |
134 | call the corresponding file handler. */ | |
23bd240f | 135 | handler = Ffind_file_name_handler (directory, Qdirectory_files); |
32f4334d RS |
136 | if (!NILP (handler)) |
137 | { | |
138 | Lisp_Object args[6]; | |
139 | ||
140 | args[0] = handler; | |
141 | args[1] = Qdirectory_files; | |
23bd240f | 142 | args[2] = directory; |
32f4334d RS |
143 | args[3] = full; |
144 | args[4] = match; | |
145 | args[5] = nosort; | |
146 | return Ffuncall (6, args); | |
147 | } | |
14d55bce | 148 | |
6155fae1 JB |
149 | { |
150 | struct gcpro gcpro1, gcpro2; | |
151 | ||
152 | /* Because of file name handlers, these functions might call | |
153 | Ffuncall, and cause a GC. */ | |
154 | GCPRO1 (match); | |
23bd240f | 155 | directory = Fexpand_file_name (directory, Qnil); |
3254eb1e | 156 | UNGCPRO; |
23bd240f EN |
157 | GCPRO2 (match, directory); |
158 | dirfilename = Fdirectory_file_name (directory); | |
6155fae1 JB |
159 | UNGCPRO; |
160 | } | |
161 | ||
265a9e55 | 162 | if (!NILP (match)) |
14d55bce RS |
163 | { |
164 | CHECK_STRING (match, 3); | |
ebb9e16f JB |
165 | |
166 | /* MATCH might be a flawed regular expression. Rather than | |
8e6208c5 | 167 | catching and signaling our own errors, we just call |
ebb9e16f | 168 | compile_pattern to do the work for us. */ |
c872c6b2 RS |
169 | /* Pass 1 for the MULTIBYTE arg |
170 | because we do make multibyte strings if the contents warrant. */ | |
14d55bce | 171 | #ifdef VMS |
e50c66d3 | 172 | bufp = compile_pattern (match, 0, |
3e937712 | 173 | buffer_defaults.downcase_table, 0, 1); |
14d55bce | 174 | #else |
3e937712 | 175 | bufp = compile_pattern (match, 0, Qnil, 0, 1); |
14d55bce RS |
176 | #endif |
177 | } | |
178 | ||
24c2a54f RS |
179 | dirfilename = ENCODE_FILE (dirfilename); |
180 | ||
181 | encoded_directory = ENCODE_FILE (directory); | |
182 | ||
e50c66d3 | 183 | /* Now *bufp is the compiled form of MATCH; don't call anything |
6155fae1 JB |
184 | which might compile a new regexp until we're done with the loop! */ |
185 | ||
186 | /* Do this opendir after anything which might signal an error; if | |
8e6208c5 | 187 | an error is signaled while the directory stream is open, we |
6155fae1 JB |
188 | have to make sure it gets closed, and setting up an |
189 | unwind_protect to do so would be a pain. */ | |
190 | d = opendir (XSTRING (dirfilename)->data); | |
191 | if (! d) | |
23bd240f | 192 | report_file_error ("Opening directory", Fcons (directory, Qnil)); |
14d55bce RS |
193 | |
194 | list = Qnil; | |
24c2a54f | 195 | dirnamelen = XSTRING (encoded_directory)->size; |
c81a9bdc | 196 | re_match_object = Qt; |
14d55bce RS |
197 | |
198 | /* Loop reading blocks */ | |
199 | while (1) | |
200 | { | |
201 | DIRENTRY *dp = readdir (d); | |
202 | int len; | |
203 | ||
204 | if (!dp) break; | |
205 | len = NAMLEN (dp); | |
128ecc89 | 206 | if (DIRENTRY_NONEMPTY (dp)) |
14d55bce | 207 | { |
265a9e55 | 208 | if (NILP (match) |
e50c66d3 | 209 | || (0 <= re_search (bufp, dp->d_name, len, 0, len, 0))) |
14d55bce | 210 | { |
265a9e55 | 211 | if (!NILP (full)) |
14d55bce | 212 | { |
5617588f RS |
213 | int afterdirindex = dirnamelen; |
214 | int total = len + dirnamelen; | |
215 | int needsep = 0; | |
216 | ||
217 | /* Decide whether we need to add a directory separator. */ | |
14d55bce | 218 | #ifndef VMS |
5617588f | 219 | if (dirnamelen == 0 |
24c2a54f | 220 | || !IS_ANY_SEP (XSTRING (encoded_directory)->data[dirnamelen - 1])) |
5617588f | 221 | needsep = 1; |
14d55bce RS |
222 | #endif /* VMS */ |
223 | ||
5617588f | 224 | name = make_uninit_string (total + needsep); |
24c2a54f | 225 | bcopy (XSTRING (encoded_directory)->data, XSTRING (name)->data, |
5617588f RS |
226 | dirnamelen); |
227 | if (needsep) | |
228 | XSTRING (name)->data[afterdirindex++] = DIRECTORY_SEP; | |
229 | bcopy (dp->d_name, | |
230 | XSTRING (name)->data + afterdirindex, len); | |
14d55bce RS |
231 | } |
232 | else | |
233 | name = make_string (dp->d_name, len); | |
24c2a54f RS |
234 | if (! NILP (Vfile_name_coding_system)) |
235 | name = Fdecode_coding_string (name, Vfile_name_coding_system, | |
236 | Qt); | |
14d55bce RS |
237 | list = Fcons (name, list); |
238 | } | |
239 | } | |
240 | } | |
241 | closedir (d); | |
265a9e55 | 242 | if (!NILP (nosort)) |
14d55bce RS |
243 | return list; |
244 | return Fsort (Fnreverse (list), Qstring_lessp); | |
245 | } | |
246 | \f | |
247 | Lisp_Object file_name_completion (); | |
248 | ||
249 | DEFUN ("file-name-completion", Ffile_name_completion, Sfile_name_completion, | |
250 | 2, 2, 0, | |
23bd240f | 251 | "Complete file name FILE in directory DIRECTORY.\n\ |
14d55bce | 252 | Returns the longest string\n\ |
7b6540dd | 253 | common to all file names in DIRECTORY that start with FILE.\n\ |
14d55bce RS |
254 | If there is only one and FILE matches it exactly, returns t.\n\ |
255 | Returns nil if DIR contains no name starting with FILE.") | |
23bd240f EN |
256 | (file, directory) |
257 | Lisp_Object file, directory; | |
14d55bce | 258 | { |
32f4334d | 259 | Lisp_Object handler; |
32f4334d | 260 | |
8436e231 | 261 | /* If the directory name has special constructs in it, |
32f4334d | 262 | call the corresponding file handler. */ |
23bd240f | 263 | handler = Ffind_file_name_handler (directory, Qfile_name_completion); |
32f4334d | 264 | if (!NILP (handler)) |
23bd240f | 265 | return call3 (handler, Qfile_name_completion, file, directory); |
32f4334d | 266 | |
8436e231 RS |
267 | /* If the file name has special constructs in it, |
268 | call the corresponding file handler. */ | |
269 | handler = Ffind_file_name_handler (file, Qfile_name_completion); | |
270 | if (!NILP (handler)) | |
23bd240f | 271 | return call3 (handler, Qfile_name_completion, file, directory); |
8436e231 | 272 | |
23bd240f | 273 | return file_name_completion (file, directory, 0, 0); |
14d55bce RS |
274 | } |
275 | ||
276 | DEFUN ("file-name-all-completions", Ffile_name_all_completions, | |
277 | Sfile_name_all_completions, 2, 2, 0, | |
23bd240f EN |
278 | "Return a list of all completions of file name FILE in directory DIRECTORY.\n\ |
279 | These are all file names in directory DIRECTORY which begin with FILE.") | |
280 | (file, directory) | |
281 | Lisp_Object file, directory; | |
14d55bce | 282 | { |
32f4334d RS |
283 | Lisp_Object handler; |
284 | ||
8436e231 | 285 | /* If the directory name has special constructs in it, |
32f4334d | 286 | call the corresponding file handler. */ |
23bd240f | 287 | handler = Ffind_file_name_handler (directory, Qfile_name_all_completions); |
32f4334d | 288 | if (!NILP (handler)) |
23bd240f | 289 | return call3 (handler, Qfile_name_all_completions, file, directory); |
32f4334d | 290 | |
8436e231 RS |
291 | /* If the file name has special constructs in it, |
292 | call the corresponding file handler. */ | |
293 | handler = Ffind_file_name_handler (file, Qfile_name_all_completions); | |
294 | if (!NILP (handler)) | |
23bd240f | 295 | return call3 (handler, Qfile_name_all_completions, file, directory); |
8436e231 | 296 | |
23bd240f | 297 | return file_name_completion (file, directory, 1, 0); |
14d55bce RS |
298 | } |
299 | ||
14d55bce RS |
300 | Lisp_Object |
301 | file_name_completion (file, dirname, all_flag, ver_flag) | |
302 | Lisp_Object file, dirname; | |
303 | int all_flag, ver_flag; | |
304 | { | |
305 | DIR *d; | |
306 | DIRENTRY *dp; | |
307 | int bestmatchsize, skip; | |
308 | register int compare, matchsize; | |
309 | unsigned char *p1, *p2; | |
310 | int matchcount = 0; | |
311 | Lisp_Object bestmatch, tem, elt, name; | |
24c2a54f RS |
312 | Lisp_Object encoded_file; |
313 | Lisp_Object encoded_dir; | |
14d55bce RS |
314 | struct stat st; |
315 | int directoryp; | |
316 | int passcount; | |
317 | int count = specpdl_ptr - specpdl; | |
24c2a54f | 318 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5; |
3fcc88cc | 319 | |
14d55bce RS |
320 | #ifdef VMS |
321 | extern DIRENTRY * readdirver (); | |
322 | ||
323 | DIRENTRY *((* readfunc) ()); | |
324 | ||
325 | /* Filename completion on VMS ignores case, since VMS filesys does. */ | |
326 | specbind (Qcompletion_ignore_case, Qt); | |
327 | ||
328 | readfunc = readdir; | |
329 | if (ver_flag) | |
330 | readfunc = readdirver; | |
331 | file = Fupcase (file); | |
332 | #else /* not VMS */ | |
333 | CHECK_STRING (file, 0); | |
334 | #endif /* not VMS */ | |
335 | ||
128ecc89 RS |
336 | #ifdef FILE_SYSTEM_CASE |
337 | file = FILE_SYSTEM_CASE (file); | |
338 | #endif | |
14d55bce | 339 | bestmatch = Qnil; |
24c2a54f RS |
340 | encoded_file = encoded_dir = Qnil; |
341 | GCPRO5 (file, dirname, bestmatch, encoded_file, encoded_dir); | |
3fcc88cc | 342 | dirname = Fexpand_file_name (dirname, Qnil); |
14d55bce | 343 | |
24c2a54f RS |
344 | /* Do completion on the encoded file name |
345 | because the other names in the directory are (we presume) | |
346 | encoded likewise. We decode the completed string at the end. */ | |
347 | encoded_file = ENCODE_FILE (file); | |
348 | ||
349 | encoded_dir = ENCODE_FILE (dirname); | |
350 | ||
14d55bce RS |
351 | /* With passcount = 0, ignore files that end in an ignored extension. |
352 | If nothing found then try again with passcount = 1, don't ignore them. | |
353 | If looking for all completions, start with passcount = 1, | |
354 | so always take even the ignored ones. | |
355 | ||
356 | ** It would not actually be helpful to the user to ignore any possible | |
357 | completions when making a list of them.** */ | |
358 | ||
265a9e55 | 359 | for (passcount = !!all_flag; NILP (bestmatch) && passcount < 2; passcount++) |
14d55bce | 360 | { |
24c2a54f RS |
361 | d = opendir (XSTRING (Fdirectory_file_name (encoded_dir))->data); |
362 | if (!d) | |
14d55bce RS |
363 | report_file_error ("Opening directory", Fcons (dirname, Qnil)); |
364 | ||
365 | /* Loop reading blocks */ | |
366 | /* (att3b compiler bug requires do a null comparison this way) */ | |
367 | while (1) | |
368 | { | |
369 | DIRENTRY *dp; | |
370 | int len; | |
371 | ||
372 | #ifdef VMS | |
373 | dp = (*readfunc) (d); | |
374 | #else | |
375 | dp = readdir (d); | |
376 | #endif | |
377 | if (!dp) break; | |
378 | ||
379 | len = NAMLEN (dp); | |
380 | ||
265a9e55 | 381 | if (!NILP (Vquit_flag) && NILP (Vinhibit_quit)) |
14d55bce | 382 | goto quit; |
128ecc89 | 383 | if (! DIRENTRY_NONEMPTY (dp) |
24c2a54f RS |
384 | || len < XSTRING (encoded_file)->size |
385 | || 0 <= scmp (dp->d_name, XSTRING (encoded_file)->data, | |
386 | XSTRING (encoded_file)->size)) | |
14d55bce RS |
387 | continue; |
388 | ||
24c2a54f | 389 | if (file_name_completion_stat (encoded_dir, dp, &st) < 0) |
14d55bce RS |
390 | continue; |
391 | ||
392 | directoryp = ((st.st_mode & S_IFMT) == S_IFDIR); | |
393 | tem = Qnil; | |
ad456ad4 RS |
394 | if (directoryp) |
395 | { | |
396 | #ifndef TRIVIAL_DIRECTORY_ENTRY | |
397 | #define TRIVIAL_DIRECTORY_ENTRY(n) (!strcmp (n, ".") || !strcmp (n, "..")) | |
398 | #endif | |
399 | /* "." and ".." are never interesting as completions, but are | |
400 | actually in the way in a directory contains only one file. */ | |
401 | if (!passcount && TRIVIAL_DIRECTORY_ENTRY (dp->d_name)) | |
402 | continue; | |
403 | } | |
404 | else | |
14d55bce RS |
405 | { |
406 | /* Compare extensions-to-be-ignored against end of this file name */ | |
407 | /* if name is not an exact match against specified string */ | |
24c2a54f | 408 | if (!passcount && len > XSTRING (encoded_file)->size) |
14d55bce RS |
409 | /* and exit this for loop if a match is found */ |
410 | for (tem = Vcompletion_ignored_extensions; | |
411 | CONSP (tem); tem = XCONS (tem)->cdr) | |
412 | { | |
413 | elt = XCONS (tem)->car; | |
88cf1852 | 414 | if (!STRINGP (elt)) continue; |
14d55bce RS |
415 | skip = len - XSTRING (elt)->size; |
416 | if (skip < 0) continue; | |
417 | ||
418 | if (0 <= scmp (dp->d_name + skip, | |
419 | XSTRING (elt)->data, | |
420 | XSTRING (elt)->size)) | |
421 | continue; | |
422 | break; | |
423 | } | |
424 | } | |
425 | ||
f676868d KH |
426 | /* If an ignored-extensions match was found, |
427 | don't process this name as a completion. */ | |
428 | if (!passcount && CONSP (tem)) | |
429 | continue; | |
430 | ||
431 | if (!passcount) | |
14d55bce | 432 | { |
f676868d KH |
433 | Lisp_Object regexps; |
434 | Lisp_Object zero; | |
617b3bfe | 435 | XSETFASTINT (zero, 0); |
f676868d KH |
436 | |
437 | /* Ignore this element if it fails to match all the regexps. */ | |
438 | for (regexps = Vcompletion_regexp_list; CONSP (regexps); | |
439 | regexps = XCONS (regexps)->cdr) | |
440 | { | |
441 | tem = Fstring_match (XCONS (regexps)->car, elt, zero); | |
442 | if (NILP (tem)) | |
443 | break; | |
444 | } | |
445 | if (CONSP (regexps)) | |
446 | continue; | |
447 | } | |
14d55bce | 448 | |
f676868d | 449 | /* Update computation of how much all possible completions match */ |
14d55bce | 450 | |
f676868d KH |
451 | matchcount++; |
452 | ||
453 | if (all_flag || NILP (bestmatch)) | |
454 | { | |
455 | /* This is a possible completion */ | |
456 | if (directoryp) | |
14d55bce | 457 | { |
f676868d KH |
458 | /* This completion is a directory; make it end with '/' */ |
459 | name = Ffile_name_as_directory (make_string (dp->d_name, len)); | |
460 | } | |
461 | else | |
462 | name = make_string (dp->d_name, len); | |
463 | if (all_flag) | |
464 | { | |
24c2a54f RS |
465 | if (! NILP (Vfile_name_coding_system)) |
466 | name = Fdecode_coding_string (name, | |
467 | Vfile_name_coding_system, Qt); | |
f676868d | 468 | bestmatch = Fcons (name, bestmatch); |
14d55bce RS |
469 | } |
470 | else | |
471 | { | |
f676868d KH |
472 | bestmatch = name; |
473 | bestmatchsize = XSTRING (name)->size; | |
474 | } | |
475 | } | |
476 | else | |
477 | { | |
478 | compare = min (bestmatchsize, len); | |
479 | p1 = XSTRING (bestmatch)->data; | |
480 | p2 = (unsigned char *) dp->d_name; | |
481 | matchsize = scmp(p1, p2, compare); | |
482 | if (matchsize < 0) | |
483 | matchsize = compare; | |
484 | if (completion_ignore_case) | |
485 | { | |
486 | /* If this is an exact match except for case, | |
487 | use it as the best match rather than one that is not | |
488 | an exact match. This way, we get the case pattern | |
489 | of the actual match. */ | |
f5ec5d3d RS |
490 | /* This tests that the current file is an exact match |
491 | but BESTMATCH is not (it is too long). */ | |
f676868d KH |
492 | if ((matchsize == len |
493 | && matchsize + !!directoryp | |
494 | < XSTRING (bestmatch)->size) | |
495 | || | |
496 | /* If there is no exact match ignoring case, | |
497 | prefer a match that does not change the case | |
498 | of the input. */ | |
f5ec5d3d RS |
499 | /* If there is more than one exact match aside from |
500 | case, and one of them is exact including case, | |
501 | prefer that one. */ | |
502 | /* This == checks that, of current file and BESTMATCH, | |
503 | either both or neither are exact. */ | |
f676868d KH |
504 | (((matchsize == len) |
505 | == | |
506 | (matchsize + !!directoryp | |
507 | == XSTRING (bestmatch)->size)) | |
24c2a54f RS |
508 | && !bcmp (p2, XSTRING (encoded_file)->data, XSTRING (encoded_file)->size) |
509 | && bcmp (p1, XSTRING (encoded_file)->data, XSTRING (encoded_file)->size))) | |
97e98a56 | 510 | { |
f676868d KH |
511 | bestmatch = make_string (dp->d_name, len); |
512 | if (directoryp) | |
513 | bestmatch = Ffile_name_as_directory (bestmatch); | |
97e98a56 | 514 | } |
14d55bce | 515 | } |
f676868d KH |
516 | |
517 | /* If this dirname all matches, see if implicit following | |
518 | slash does too. */ | |
519 | if (directoryp | |
520 | && compare == matchsize | |
521 | && bestmatchsize > matchsize | |
0b39d75d | 522 | && IS_ANY_SEP (p1[matchsize])) |
f676868d KH |
523 | matchsize++; |
524 | bestmatchsize = matchsize; | |
14d55bce RS |
525 | } |
526 | } | |
527 | closedir (d); | |
528 | } | |
529 | ||
3fcc88cc RS |
530 | UNGCPRO; |
531 | bestmatch = unbind_to (count, bestmatch); | |
14d55bce | 532 | |
265a9e55 | 533 | if (all_flag || NILP (bestmatch)) |
24c2a54f RS |
534 | { |
535 | if (! NILP (Vfile_name_coding_system) | |
536 | && STRINGP (bestmatch)) | |
537 | bestmatch = Fdecode_coding_string (bestmatch, | |
538 | Vfile_name_coding_system, Qt); | |
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. */ | |
547 | if (! NILP (Vfile_name_coding_system)) | |
548 | bestmatch = Fdecode_coding_string (bestmatch, | |
549 | Vfile_name_coding_system, Qt); | |
550 | return bestmatch; | |
551 | ||
14d55bce RS |
552 | quit: |
553 | if (d) closedir (d); | |
554 | Vquit_flag = Qnil; | |
555 | return Fsignal (Qquit, Qnil); | |
556 | } | |
557 | ||
558 | file_name_completion_stat (dirname, dp, st_addr) | |
559 | Lisp_Object dirname; | |
560 | DIRENTRY *dp; | |
561 | struct stat *st_addr; | |
562 | { | |
563 | int len = NAMLEN (dp); | |
564 | int pos = XSTRING (dirname)->size; | |
7e3cf34f | 565 | int value; |
14d55bce RS |
566 | char *fullname = (char *) alloca (len + pos + 2); |
567 | ||
04924ee3 RS |
568 | #ifdef MSDOS |
569 | #if __DJGPP__ > 1 | |
570 | /* Some fields of struct stat are *very* expensive to compute on MS-DOS, | |
571 | but aren't required here. Avoid computing the following fields: | |
572 | st_inode, st_size and st_nlink for directories, and the execute bits | |
573 | in st_mode for non-directory files with non-standard extensions. */ | |
574 | ||
575 | unsigned short save_djstat_flags = _djstat_flags; | |
576 | ||
577 | _djstat_flags = _STAT_INODE | _STAT_EXEC_MAGIC | _STAT_DIRSIZE; | |
578 | #endif /* __DJGPP__ > 1 */ | |
579 | #endif /* MSDOS */ | |
580 | ||
14d55bce RS |
581 | bcopy (XSTRING (dirname)->data, fullname, pos); |
582 | #ifndef VMS | |
0b39d75d RS |
583 | if (!IS_DIRECTORY_SEP (fullname[pos - 1])) |
584 | fullname[pos++] = DIRECTORY_SEP; | |
14d55bce RS |
585 | #endif |
586 | ||
587 | bcopy (dp->d_name, fullname + pos, len); | |
588 | fullname[pos + len] = 0; | |
589 | ||
a889bd0e | 590 | #ifdef S_IFLNK |
7e3cf34f RS |
591 | /* We want to return success if a link points to a nonexistent file, |
592 | but we want to return the status for what the link points to, | |
593 | in case it is a directory. */ | |
594 | value = lstat (fullname, st_addr); | |
595 | stat (fullname, st_addr); | |
596 | return value; | |
a889bd0e | 597 | #else |
04924ee3 RS |
598 | value = stat (fullname, st_addr); |
599 | #ifdef MSDOS | |
600 | #if __DJGPP__ > 1 | |
601 | _djstat_flags = save_djstat_flags; | |
602 | #endif /* __DJGPP__ > 1 */ | |
603 | #endif /* MSDOS */ | |
604 | return value; | |
605 | #endif /* S_IFLNK */ | |
14d55bce RS |
606 | } |
607 | \f | |
3ed991aa RS |
608 | #ifdef VMS |
609 | ||
610 | DEFUN ("file-name-all-versions", Ffile_name_all_versions, | |
611 | Sfile_name_all_versions, 2, 2, 0, | |
23bd240f EN |
612 | "Return a list of all versions of file name FILE in directory DIRECTORY.") |
613 | (file, directory) | |
614 | Lisp_Object file, directory; | |
3ed991aa | 615 | { |
23bd240f | 616 | return file_name_completion (file, directory, 1, 1); |
3ed991aa RS |
617 | } |
618 | ||
619 | DEFUN ("file-version-limit", Ffile_version_limit, Sfile_version_limit, 1, 1, 0, | |
620 | "Return the maximum number of versions allowed for FILE.\n\ | |
621 | Returns nil if the file cannot be opened or if there is no version limit.") | |
622 | (filename) | |
623 | Lisp_Object filename; | |
624 | { | |
625 | Lisp_Object retval; | |
626 | struct FAB fab; | |
627 | struct RAB rab; | |
628 | struct XABFHC xabfhc; | |
629 | int status; | |
630 | ||
631 | filename = Fexpand_file_name (filename, Qnil); | |
632 | fab = cc$rms_fab; | |
633 | xabfhc = cc$rms_xabfhc; | |
634 | fab.fab$l_fna = XSTRING (filename)->data; | |
635 | fab.fab$b_fns = strlen (fab.fab$l_fna); | |
636 | fab.fab$l_xab = (char *) &xabfhc; | |
637 | status = sys$open (&fab, 0, 0); | |
638 | if (status != RMS$_NORMAL) /* Probably non-existent file */ | |
639 | return Qnil; | |
640 | sys$close (&fab, 0, 0); | |
641 | if (xabfhc.xab$w_verlimit == 32767) | |
642 | return Qnil; /* No version limit */ | |
643 | else | |
644 | return make_number (xabfhc.xab$w_verlimit); | |
645 | } | |
646 | ||
647 | #endif /* VMS */ | |
648 | \f | |
14d55bce RS |
649 | Lisp_Object |
650 | make_time (time) | |
651 | int time; | |
652 | { | |
653 | return Fcons (make_number (time >> 16), | |
654 | Fcons (make_number (time & 0177777), Qnil)); | |
655 | } | |
656 | ||
657 | DEFUN ("file-attributes", Ffile_attributes, Sfile_attributes, 1, 1, 0, | |
658 | "Return a list of attributes of file FILENAME.\n\ | |
659 | Value is nil if specified file cannot be opened.\n\ | |
660 | Otherwise, list elements are:\n\ | |
661 | 0. t for directory, string (name linked to) for symbolic link, or nil.\n\ | |
662 | 1. Number of links to file.\n\ | |
663 | 2. File uid.\n\ | |
664 | 3. File gid.\n\ | |
665 | 4. Last access time, as a list of two integers.\n\ | |
666 | First integer has high-order 16 bits of time, second has low 16 bits.\n\ | |
667 | 5. Last modification time, likewise.\n\ | |
668 | 6. Last status change time, likewise.\n\ | |
60fc6069 | 669 | 7. Size in bytes (-1, if number is out of range).\n\ |
14d55bce RS |
670 | 8. File modes, as a string of ten letters or dashes as in ls -l.\n\ |
671 | 9. t iff file's gid would change if file were deleted and recreated.\n\ | |
672 | 10. inode number.\n\ | |
673 | 11. Device number.\n\ | |
674 | \n\ | |
ccbcf979 | 675 | If file does not exist, returns nil.") |
14d55bce RS |
676 | (filename) |
677 | Lisp_Object filename; | |
678 | { | |
679 | Lisp_Object values[12]; | |
680 | Lisp_Object dirname; | |
24c2a54f | 681 | Lisp_Object encoded; |
14d55bce RS |
682 | struct stat s; |
683 | struct stat sdir; | |
684 | char modes[10]; | |
32f4334d | 685 | Lisp_Object handler; |
14d55bce RS |
686 | |
687 | filename = Fexpand_file_name (filename, Qnil); | |
32f4334d RS |
688 | |
689 | /* If the file name has special constructs in it, | |
690 | call the corresponding file handler. */ | |
a617e913 | 691 | handler = Ffind_file_name_handler (filename, Qfile_attributes); |
32f4334d RS |
692 | if (!NILP (handler)) |
693 | return call2 (handler, Qfile_attributes, filename); | |
694 | ||
24c2a54f RS |
695 | encoded = ENCODE_FILE (filename); |
696 | ||
697 | if (lstat (XSTRING (encoded)->data, &s) < 0) | |
14d55bce RS |
698 | return Qnil; |
699 | ||
700 | switch (s.st_mode & S_IFMT) | |
701 | { | |
702 | default: | |
703 | values[0] = Qnil; break; | |
704 | case S_IFDIR: | |
705 | values[0] = Qt; break; | |
706 | #ifdef S_IFLNK | |
707 | case S_IFLNK: | |
708 | values[0] = Ffile_symlink_p (filename); break; | |
709 | #endif | |
710 | } | |
711 | values[1] = make_number (s.st_nlink); | |
712 | values[2] = make_number (s.st_uid); | |
713 | values[3] = make_number (s.st_gid); | |
714 | values[4] = make_time (s.st_atime); | |
715 | values[5] = make_time (s.st_mtime); | |
716 | values[6] = make_time (s.st_ctime); | |
ed2ef6c9 | 717 | values[7] = make_number ((int) s.st_size); |
60fc6069 RS |
718 | /* If the size is out of range, give back -1. */ |
719 | if (XINT (values[7]) != s.st_size) | |
720 | XSETINT (values[7], -1); | |
14d55bce RS |
721 | filemodestring (&s, modes); |
722 | values[8] = make_string (modes, 10); | |
723 | #ifdef BSD4_3 /* Gross kludge to avoid lack of "#if defined(...)" in VMS */ | |
eb8c3be9 | 724 | #define BSD4_2 /* A new meaning to the term `backwards compatibility' */ |
14d55bce RS |
725 | #endif |
726 | #ifdef BSD4_2 /* file gid will be dir gid */ | |
727 | dirname = Ffile_name_directory (filename); | |
24c2a54f RS |
728 | if (! NILP (dirname)) |
729 | encoded = ENCODE_FILE (dirname); | |
730 | if (! NILP (dirname) && stat (XSTRING (encoded)->data, &sdir) == 0) | |
14d55bce RS |
731 | values[9] = (sdir.st_gid != s.st_gid) ? Qt : Qnil; |
732 | else /* if we can't tell, assume worst */ | |
733 | values[9] = Qt; | |
734 | #else /* file gid will be egid */ | |
735 | values[9] = (s.st_gid != getegid ()) ? Qt : Qnil; | |
736 | #endif /* BSD4_2 (or BSD4_3) */ | |
737 | #ifdef BSD4_3 | |
738 | #undef BSD4_2 /* ok, you can look again without throwing up */ | |
739 | #endif | |
ce4200f6 RS |
740 | /* Cast -1 to avoid warning if int is not as wide as VALBITS. */ |
741 | if (s.st_ino & (((EMACS_INT) (-1)) << VALBITS)) | |
4c637faa RS |
742 | /* To allow inode numbers larger than VALBITS, separate the bottom |
743 | 16 bits. */ | |
744 | values[10] = Fcons (make_number (s.st_ino >> 16), | |
745 | make_number (s.st_ino & 0xffff)); | |
746 | else | |
747 | /* But keep the most common cases as integers. */ | |
748 | values[10] = make_number (s.st_ino); | |
14d55bce RS |
749 | values[11] = make_number (s.st_dev); |
750 | return Flist (sizeof(values) / sizeof(values[0]), values); | |
751 | } | |
752 | \f | |
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 | } |