| 1 | /* Lisp functions for making directory listings. |
| 2 | Copyright (C) 1985, 1986, 1993, 1994, 1999, 2000, 2001, 2002, 2003, |
| 3 | 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc. |
| 4 | |
| 5 | This file is part of GNU Emacs. |
| 6 | |
| 7 | GNU Emacs is free software; you can redistribute it and/or modify |
| 8 | it under the terms of the GNU General Public License as published by |
| 9 | the Free Software Foundation; either version 3, or (at your option) |
| 10 | any later version. |
| 11 | |
| 12 | GNU Emacs is distributed in the hope that it will be useful, |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | GNU General Public License for more details. |
| 16 | |
| 17 | You should have received a copy of the GNU General Public License |
| 18 | along with GNU Emacs; see the file COPYING. If not, write to |
| 19 | the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
| 20 | Boston, MA 02110-1301, USA. */ |
| 21 | |
| 22 | |
| 23 | #include <config.h> |
| 24 | |
| 25 | #include <stdio.h> |
| 26 | #include <sys/types.h> |
| 27 | #include <sys/stat.h> |
| 28 | |
| 29 | #ifdef HAVE_PWD_H |
| 30 | #include <pwd.h> |
| 31 | #endif |
| 32 | #ifndef VMS |
| 33 | #include <grp.h> |
| 34 | #endif |
| 35 | |
| 36 | #include <errno.h> |
| 37 | |
| 38 | #ifdef VMS |
| 39 | #include <string.h> |
| 40 | #include <rms.h> |
| 41 | #include <rmsdef.h> |
| 42 | #endif |
| 43 | |
| 44 | #ifdef HAVE_UNISTD_H |
| 45 | #include <unistd.h> |
| 46 | #endif |
| 47 | |
| 48 | /* The d_nameln member of a struct dirent includes the '\0' character |
| 49 | on some systems, but not on others. What's worse, you can't tell |
| 50 | at compile-time which one it will be, since it really depends on |
| 51 | the sort of system providing the filesystem you're reading from, |
| 52 | not the system you are running on. Paul Eggert |
| 53 | <eggert@bi.twinsun.com> says this occurs when Emacs is running on a |
| 54 | SunOS 4.1.2 host, reading a directory that is remote-mounted from a |
| 55 | Solaris 2.1 host and is in a native Solaris 2.1 filesystem. |
| 56 | |
| 57 | Since applying strlen to the name always works, we'll just do that. */ |
| 58 | #define NAMLEN(p) strlen (p->d_name) |
| 59 | |
| 60 | #ifdef SYSV_SYSTEM_DIR |
| 61 | |
| 62 | #include <dirent.h> |
| 63 | #define DIRENTRY struct dirent |
| 64 | |
| 65 | #else /* not SYSV_SYSTEM_DIR */ |
| 66 | |
| 67 | #ifdef NONSYSTEM_DIR_LIBRARY |
| 68 | #include "ndir.h" |
| 69 | #else /* not NONSYSTEM_DIR_LIBRARY */ |
| 70 | #ifdef MSDOS |
| 71 | #include <dirent.h> |
| 72 | #else |
| 73 | #include <sys/dir.h> |
| 74 | #endif |
| 75 | #endif /* not NONSYSTEM_DIR_LIBRARY */ |
| 76 | |
| 77 | #include <sys/stat.h> |
| 78 | |
| 79 | #ifndef MSDOS |
| 80 | #define DIRENTRY struct direct |
| 81 | |
| 82 | extern DIR *opendir (); |
| 83 | extern struct direct *readdir (); |
| 84 | |
| 85 | #endif /* not MSDOS */ |
| 86 | #endif /* not SYSV_SYSTEM_DIR */ |
| 87 | |
| 88 | /* Some versions of Cygwin don't have d_ino in `struct dirent'. */ |
| 89 | #if defined(MSDOS) || defined(__CYGWIN__) |
| 90 | #define DIRENTRY_NONEMPTY(p) ((p)->d_name[0] != 0) |
| 91 | #else |
| 92 | #define DIRENTRY_NONEMPTY(p) ((p)->d_ino) |
| 93 | #endif |
| 94 | |
| 95 | #include "lisp.h" |
| 96 | #include "systime.h" |
| 97 | #include "buffer.h" |
| 98 | #include "commands.h" |
| 99 | #include "character.h" |
| 100 | #include "charset.h" |
| 101 | #include "coding.h" |
| 102 | #include "regex.h" |
| 103 | #include "blockinput.h" |
| 104 | |
| 105 | /* Returns a search buffer, with a fastmap allocated and ready to go. */ |
| 106 | extern struct re_pattern_buffer *compile_pattern (); |
| 107 | |
| 108 | /* From filemode.c. Can't go in Lisp.h because of `stat'. */ |
| 109 | extern void filemodestring P_ ((struct stat *, char *)); |
| 110 | |
| 111 | /* if system does not have symbolic links, it does not have lstat. |
| 112 | In that case, use ordinary stat instead. */ |
| 113 | |
| 114 | #ifndef S_IFLNK |
| 115 | #define lstat stat |
| 116 | #endif |
| 117 | |
| 118 | extern int completion_ignore_case; |
| 119 | extern Lisp_Object Qcompletion_ignore_case; |
| 120 | extern Lisp_Object Vcompletion_regexp_list; |
| 121 | |
| 122 | Lisp_Object Vcompletion_ignored_extensions; |
| 123 | Lisp_Object Qdirectory_files; |
| 124 | Lisp_Object Qdirectory_files_and_attributes; |
| 125 | Lisp_Object Qfile_name_completion; |
| 126 | Lisp_Object Qfile_name_all_completions; |
| 127 | Lisp_Object Qfile_attributes; |
| 128 | Lisp_Object Qfile_attributes_lessp; |
| 129 | |
| 130 | static int scmp P_ ((unsigned char *, unsigned char *, int)); |
| 131 | \f |
| 132 | |
| 133 | Lisp_Object |
| 134 | directory_files_internal_unwind (dh) |
| 135 | Lisp_Object dh; |
| 136 | { |
| 137 | DIR *d = (DIR *) XSAVE_VALUE (dh)->pointer; |
| 138 | BLOCK_INPUT; |
| 139 | closedir (d); |
| 140 | UNBLOCK_INPUT; |
| 141 | return Qnil; |
| 142 | } |
| 143 | |
| 144 | /* Function shared by Fdirectory_files and Fdirectory_files_and_attributes. |
| 145 | When ATTRS is zero, return a list of directory filenames; when |
| 146 | non-zero, return a list of directory filenames and their attributes. |
| 147 | In the latter case, ID_FORMAT is passed to Ffile_attributes. */ |
| 148 | |
| 149 | Lisp_Object |
| 150 | directory_files_internal (directory, full, match, nosort, attrs, id_format) |
| 151 | Lisp_Object directory, full, match, nosort; |
| 152 | int attrs; |
| 153 | Lisp_Object id_format; |
| 154 | { |
| 155 | DIR *d; |
| 156 | int directory_nbytes; |
| 157 | Lisp_Object list, dirfilename, encoded_directory; |
| 158 | struct re_pattern_buffer *bufp = NULL; |
| 159 | int needsep = 0; |
| 160 | int count = SPECPDL_INDEX (); |
| 161 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5; |
| 162 | DIRENTRY *dp; |
| 163 | |
| 164 | /* Because of file name handlers, these functions might call |
| 165 | Ffuncall, and cause a GC. */ |
| 166 | list = encoded_directory = dirfilename = Qnil; |
| 167 | GCPRO5 (match, directory, list, dirfilename, encoded_directory); |
| 168 | dirfilename = Fdirectory_file_name (directory); |
| 169 | |
| 170 | if (!NILP (match)) |
| 171 | { |
| 172 | CHECK_STRING (match); |
| 173 | |
| 174 | /* MATCH might be a flawed regular expression. Rather than |
| 175 | catching and signaling our own errors, we just call |
| 176 | compile_pattern to do the work for us. */ |
| 177 | /* Pass 1 for the MULTIBYTE arg |
| 178 | because we do make multibyte strings if the contents warrant. */ |
| 179 | #ifdef VMS |
| 180 | bufp = compile_pattern (match, 0, |
| 181 | buffer_defaults.downcase_table, 0, 1); |
| 182 | #else /* !VMS */ |
| 183 | # ifdef WINDOWSNT |
| 184 | /* Windows users want case-insensitive wildcards. */ |
| 185 | bufp = compile_pattern (match, 0, |
| 186 | buffer_defaults.case_canon_table, 0, 1); |
| 187 | # else /* !WINDOWSNT */ |
| 188 | bufp = compile_pattern (match, 0, Qnil, 0, 1); |
| 189 | # endif /* !WINDOWSNT */ |
| 190 | #endif /* !VMS */ |
| 191 | } |
| 192 | |
| 193 | /* Note: ENCODE_FILE and DECODE_FILE can GC because they can run |
| 194 | run_pre_post_conversion_on_str which calls Lisp directly and |
| 195 | indirectly. */ |
| 196 | if (STRING_MULTIBYTE (dirfilename)) |
| 197 | dirfilename = ENCODE_FILE (dirfilename); |
| 198 | encoded_directory = (STRING_MULTIBYTE (directory) |
| 199 | ? ENCODE_FILE (directory) : directory); |
| 200 | |
| 201 | /* Now *bufp is the compiled form of MATCH; don't call anything |
| 202 | which might compile a new regexp until we're done with the loop! */ |
| 203 | |
| 204 | BLOCK_INPUT; |
| 205 | d = opendir (SDATA (dirfilename)); |
| 206 | UNBLOCK_INPUT; |
| 207 | if (d == NULL) |
| 208 | report_file_error ("Opening directory", Fcons (directory, Qnil)); |
| 209 | |
| 210 | /* Unfortunately, we can now invoke expand-file-name and |
| 211 | file-attributes on filenames, both of which can throw, so we must |
| 212 | do a proper unwind-protect. */ |
| 213 | record_unwind_protect (directory_files_internal_unwind, |
| 214 | make_save_value (d, 0)); |
| 215 | |
| 216 | directory_nbytes = SBYTES (directory); |
| 217 | re_match_object = Qt; |
| 218 | |
| 219 | /* Decide whether we need to add a directory separator. */ |
| 220 | #ifndef VMS |
| 221 | if (directory_nbytes == 0 |
| 222 | || !IS_ANY_SEP (SREF (directory, directory_nbytes - 1))) |
| 223 | needsep = 1; |
| 224 | #endif /* not VMS */ |
| 225 | |
| 226 | /* Loop reading blocks until EOF or error. */ |
| 227 | for (;;) |
| 228 | { |
| 229 | errno = 0; |
| 230 | dp = readdir (d); |
| 231 | |
| 232 | if (dp == NULL && (0 |
| 233 | #ifdef EAGAIN |
| 234 | || errno == EAGAIN |
| 235 | #endif |
| 236 | #ifdef EINTR |
| 237 | || errno == EINTR |
| 238 | #endif |
| 239 | )) |
| 240 | { QUIT; continue; } |
| 241 | |
| 242 | if (dp == NULL) |
| 243 | break; |
| 244 | |
| 245 | if (DIRENTRY_NONEMPTY (dp)) |
| 246 | { |
| 247 | int len; |
| 248 | int wanted = 0; |
| 249 | Lisp_Object name, finalname; |
| 250 | struct gcpro gcpro1, gcpro2; |
| 251 | |
| 252 | len = NAMLEN (dp); |
| 253 | name = finalname = make_unibyte_string (dp->d_name, len); |
| 254 | GCPRO2 (finalname, name); |
| 255 | |
| 256 | /* Note: DECODE_FILE can GC; it should protect its argument, |
| 257 | though. */ |
| 258 | name = DECODE_FILE (name); |
| 259 | len = SBYTES (name); |
| 260 | |
| 261 | /* Now that we have unwind_protect in place, we might as well |
| 262 | allow matching to be interrupted. */ |
| 263 | immediate_quit = 1; |
| 264 | QUIT; |
| 265 | |
| 266 | if (NILP (match) |
| 267 | || (0 <= re_search (bufp, SDATA (name), len, 0, len, 0))) |
| 268 | wanted = 1; |
| 269 | |
| 270 | immediate_quit = 0; |
| 271 | |
| 272 | if (wanted) |
| 273 | { |
| 274 | if (!NILP (full)) |
| 275 | { |
| 276 | Lisp_Object fullname; |
| 277 | int nbytes = len + directory_nbytes + needsep; |
| 278 | int nchars; |
| 279 | |
| 280 | fullname = make_uninit_multibyte_string (nbytes, nbytes); |
| 281 | bcopy (SDATA (directory), SDATA (fullname), |
| 282 | directory_nbytes); |
| 283 | |
| 284 | if (needsep) |
| 285 | SSET (fullname, directory_nbytes, DIRECTORY_SEP); |
| 286 | |
| 287 | bcopy (SDATA (name), |
| 288 | SDATA (fullname) + directory_nbytes + needsep, |
| 289 | len); |
| 290 | |
| 291 | nchars = chars_in_text (SDATA (fullname), nbytes); |
| 292 | |
| 293 | /* Some bug somewhere. */ |
| 294 | if (nchars > nbytes) |
| 295 | abort (); |
| 296 | |
| 297 | STRING_SET_CHARS (fullname, nchars); |
| 298 | if (nchars == nbytes) |
| 299 | STRING_SET_UNIBYTE (fullname); |
| 300 | |
| 301 | finalname = fullname; |
| 302 | } |
| 303 | else |
| 304 | finalname = name; |
| 305 | |
| 306 | if (attrs) |
| 307 | { |
| 308 | /* Construct an expanded filename for the directory entry. |
| 309 | Use the decoded names for input to Ffile_attributes. */ |
| 310 | Lisp_Object decoded_fullname, fileattrs; |
| 311 | struct gcpro gcpro1, gcpro2; |
| 312 | |
| 313 | decoded_fullname = fileattrs = Qnil; |
| 314 | GCPRO2 (decoded_fullname, fileattrs); |
| 315 | |
| 316 | /* Both Fexpand_file_name and Ffile_attributes can GC. */ |
| 317 | decoded_fullname = Fexpand_file_name (name, directory); |
| 318 | fileattrs = Ffile_attributes (decoded_fullname, id_format); |
| 319 | |
| 320 | list = Fcons (Fcons (finalname, fileattrs), list); |
| 321 | UNGCPRO; |
| 322 | } |
| 323 | else |
| 324 | list = Fcons (finalname, list); |
| 325 | } |
| 326 | |
| 327 | UNGCPRO; |
| 328 | } |
| 329 | } |
| 330 | |
| 331 | BLOCK_INPUT; |
| 332 | closedir (d); |
| 333 | UNBLOCK_INPUT; |
| 334 | |
| 335 | /* Discard the unwind protect. */ |
| 336 | specpdl_ptr = specpdl + count; |
| 337 | |
| 338 | if (NILP (nosort)) |
| 339 | list = Fsort (Fnreverse (list), |
| 340 | attrs ? Qfile_attributes_lessp : Qstring_lessp); |
| 341 | |
| 342 | RETURN_UNGCPRO (list); |
| 343 | } |
| 344 | |
| 345 | |
| 346 | DEFUN ("directory-files", Fdirectory_files, Sdirectory_files, 1, 4, 0, |
| 347 | doc: /* Return a list of names of files in DIRECTORY. |
| 348 | There are three optional arguments: |
| 349 | If FULL is non-nil, return absolute file names. Otherwise return names |
| 350 | that are relative to the specified directory. |
| 351 | If MATCH is non-nil, mention only file names that match the regexp MATCH. |
| 352 | If NOSORT is non-nil, the list is not sorted--its order is unpredictable. |
| 353 | NOSORT is useful if you plan to sort the result yourself. */) |
| 354 | (directory, full, match, nosort) |
| 355 | Lisp_Object directory, full, match, nosort; |
| 356 | { |
| 357 | Lisp_Object handler; |
| 358 | directory = Fexpand_file_name (directory, Qnil); |
| 359 | |
| 360 | /* If the file name has special constructs in it, |
| 361 | call the corresponding file handler. */ |
| 362 | handler = Ffind_file_name_handler (directory, Qdirectory_files); |
| 363 | if (!NILP (handler)) |
| 364 | return call5 (handler, Qdirectory_files, directory, |
| 365 | full, match, nosort); |
| 366 | |
| 367 | return directory_files_internal (directory, full, match, nosort, 0, Qnil); |
| 368 | } |
| 369 | |
| 370 | DEFUN ("directory-files-and-attributes", Fdirectory_files_and_attributes, |
| 371 | Sdirectory_files_and_attributes, 1, 5, 0, |
| 372 | doc: /* Return a list of names of files and their attributes in DIRECTORY. |
| 373 | There are four optional arguments: |
| 374 | If FULL is non-nil, return absolute file names. Otherwise return names |
| 375 | that are relative to the specified directory. |
| 376 | If MATCH is non-nil, mention only file names that match the regexp MATCH. |
| 377 | If NOSORT is non-nil, the list is not sorted--its order is unpredictable. |
| 378 | NOSORT is useful if you plan to sort the result yourself. |
| 379 | ID-FORMAT specifies the preferred format of attributes uid and gid, see |
| 380 | `file-attributes' for further documentation. */) |
| 381 | (directory, full, match, nosort, id_format) |
| 382 | Lisp_Object directory, full, match, nosort, id_format; |
| 383 | { |
| 384 | Lisp_Object handler; |
| 385 | directory = Fexpand_file_name (directory, Qnil); |
| 386 | |
| 387 | /* If the file name has special constructs in it, |
| 388 | call the corresponding file handler. */ |
| 389 | handler = Ffind_file_name_handler (directory, Qdirectory_files_and_attributes); |
| 390 | if (!NILP (handler)) |
| 391 | return call6 (handler, Qdirectory_files_and_attributes, |
| 392 | directory, full, match, nosort, id_format); |
| 393 | |
| 394 | return directory_files_internal (directory, full, match, nosort, 1, id_format); |
| 395 | } |
| 396 | |
| 397 | \f |
| 398 | Lisp_Object file_name_completion (); |
| 399 | |
| 400 | DEFUN ("file-name-completion", Ffile_name_completion, Sfile_name_completion, |
| 401 | 2, 3, 0, |
| 402 | doc: /* Complete file name FILE in directory DIRECTORY. |
| 403 | Returns the longest string |
| 404 | common to all file names in DIRECTORY that start with FILE. |
| 405 | If there is only one and FILE matches it exactly, returns t. |
| 406 | Returns nil if DIRECTORY contains no name starting with FILE. |
| 407 | |
| 408 | If PREDICATE is non-nil, call PREDICATE with each possible |
| 409 | completion (in absolute form) and ignore it if PREDICATE returns nil. |
| 410 | |
| 411 | This function ignores some of the possible completions as |
| 412 | determined by the variable `completion-ignored-extensions', which see. */) |
| 413 | (file, directory, predicate) |
| 414 | Lisp_Object file, directory, predicate; |
| 415 | { |
| 416 | Lisp_Object handler; |
| 417 | |
| 418 | /* If the directory name has special constructs in it, |
| 419 | call the corresponding file handler. */ |
| 420 | handler = Ffind_file_name_handler (directory, Qfile_name_completion); |
| 421 | if (!NILP (handler)) |
| 422 | return call4 (handler, Qfile_name_completion, file, directory, predicate); |
| 423 | |
| 424 | /* If the file name has special constructs in it, |
| 425 | call the corresponding file handler. */ |
| 426 | handler = Ffind_file_name_handler (file, Qfile_name_completion); |
| 427 | if (!NILP (handler)) |
| 428 | return call4 (handler, Qfile_name_completion, file, directory, predicate); |
| 429 | |
| 430 | return file_name_completion (file, directory, 0, 0, predicate); |
| 431 | } |
| 432 | |
| 433 | DEFUN ("file-name-all-completions", Ffile_name_all_completions, |
| 434 | Sfile_name_all_completions, 2, 2, 0, |
| 435 | doc: /* Return a list of all completions of file name FILE in directory DIRECTORY. |
| 436 | These are all file names in directory DIRECTORY which begin with FILE. */) |
| 437 | (file, directory) |
| 438 | Lisp_Object file, directory; |
| 439 | { |
| 440 | Lisp_Object handler; |
| 441 | |
| 442 | /* If the directory name has special constructs in it, |
| 443 | call the corresponding file handler. */ |
| 444 | handler = Ffind_file_name_handler (directory, Qfile_name_all_completions); |
| 445 | if (!NILP (handler)) |
| 446 | return call3 (handler, Qfile_name_all_completions, file, directory); |
| 447 | |
| 448 | /* If the file name has special constructs in it, |
| 449 | call the corresponding file handler. */ |
| 450 | handler = Ffind_file_name_handler (file, Qfile_name_all_completions); |
| 451 | if (!NILP (handler)) |
| 452 | return call3 (handler, Qfile_name_all_completions, file, directory); |
| 453 | |
| 454 | return file_name_completion (file, directory, 1, 0, Qnil); |
| 455 | } |
| 456 | |
| 457 | static int file_name_completion_stat (); |
| 458 | |
| 459 | Lisp_Object |
| 460 | file_name_completion (file, dirname, all_flag, ver_flag, predicate) |
| 461 | Lisp_Object file, dirname; |
| 462 | int all_flag, ver_flag; |
| 463 | Lisp_Object predicate; |
| 464 | { |
| 465 | DIR *d; |
| 466 | int bestmatchsize = 0, skip; |
| 467 | register int compare, matchsize; |
| 468 | int matchcount = 0; |
| 469 | /* If ALL_FLAG is 1, BESTMATCH is the list of all matches, decoded. |
| 470 | If ALL_FLAG is 0, BESTMATCH is either nil |
| 471 | or the best match so far, not decoded. */ |
| 472 | Lisp_Object bestmatch, tem, elt, name; |
| 473 | Lisp_Object encoded_file; |
| 474 | Lisp_Object encoded_dir; |
| 475 | struct stat st; |
| 476 | int directoryp; |
| 477 | int passcount; |
| 478 | int count = SPECPDL_INDEX (); |
| 479 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5; |
| 480 | |
| 481 | elt = Qnil; |
| 482 | |
| 483 | #ifdef VMS |
| 484 | extern DIRENTRY * readdirver (); |
| 485 | |
| 486 | DIRENTRY *((* readfunc) ()); |
| 487 | |
| 488 | /* Filename completion on VMS ignores case, since VMS filesys does. */ |
| 489 | specbind (Qcompletion_ignore_case, Qt); |
| 490 | |
| 491 | readfunc = readdir; |
| 492 | if (ver_flag) |
| 493 | readfunc = readdirver; |
| 494 | file = Fupcase (file); |
| 495 | #else /* not VMS */ |
| 496 | CHECK_STRING (file); |
| 497 | #endif /* not VMS */ |
| 498 | |
| 499 | #ifdef FILE_SYSTEM_CASE |
| 500 | file = FILE_SYSTEM_CASE (file); |
| 501 | #endif |
| 502 | bestmatch = Qnil; |
| 503 | encoded_file = encoded_dir = Qnil; |
| 504 | GCPRO5 (file, dirname, bestmatch, encoded_file, encoded_dir); |
| 505 | dirname = Fexpand_file_name (dirname, Qnil); |
| 506 | |
| 507 | /* Do completion on the encoded file name |
| 508 | because the other names in the directory are (we presume) |
| 509 | encoded likewise. We decode the completed string at the end. */ |
| 510 | /* Actually, this is not quite true any more: we do most of the completion |
| 511 | work with decoded file names, but we still do some filtering based |
| 512 | on the encoded file name. */ |
| 513 | encoded_file = STRING_MULTIBYTE (file) ? ENCODE_FILE (file) : file; |
| 514 | |
| 515 | encoded_dir = ENCODE_FILE (dirname); |
| 516 | |
| 517 | /* With passcount = 0, ignore files that end in an ignored extension. |
| 518 | If nothing found then try again with passcount = 1, don't ignore them. |
| 519 | If looking for all completions, start with passcount = 1, |
| 520 | so always take even the ignored ones. |
| 521 | |
| 522 | ** It would not actually be helpful to the user to ignore any possible |
| 523 | completions when making a list of them.** */ |
| 524 | |
| 525 | for (passcount = !!all_flag; NILP (bestmatch) && passcount < 2; passcount++) |
| 526 | { |
| 527 | int inner_count = SPECPDL_INDEX (); |
| 528 | |
| 529 | BLOCK_INPUT; |
| 530 | d = opendir (SDATA (Fdirectory_file_name (encoded_dir))); |
| 531 | UNBLOCK_INPUT; |
| 532 | if (!d) |
| 533 | report_file_error ("Opening directory", Fcons (dirname, Qnil)); |
| 534 | |
| 535 | record_unwind_protect (directory_files_internal_unwind, |
| 536 | make_save_value (d, 0)); |
| 537 | |
| 538 | /* Loop reading blocks */ |
| 539 | /* (att3b compiler bug requires do a null comparison this way) */ |
| 540 | while (1) |
| 541 | { |
| 542 | DIRENTRY *dp; |
| 543 | int len; |
| 544 | |
| 545 | #ifdef VMS |
| 546 | dp = (*readfunc) (d); |
| 547 | #else |
| 548 | errno = 0; |
| 549 | dp = readdir (d); |
| 550 | if (dp == NULL && (0 |
| 551 | # ifdef EAGAIN |
| 552 | || errno == EAGAIN |
| 553 | # endif |
| 554 | # ifdef EINTR |
| 555 | || errno == EINTR |
| 556 | # endif |
| 557 | )) |
| 558 | { QUIT; continue; } |
| 559 | #endif |
| 560 | |
| 561 | if (!dp) break; |
| 562 | |
| 563 | len = NAMLEN (dp); |
| 564 | |
| 565 | QUIT; |
| 566 | if (! DIRENTRY_NONEMPTY (dp) |
| 567 | || len < SCHARS (encoded_file) |
| 568 | || 0 <= scmp (dp->d_name, SDATA (encoded_file), |
| 569 | SCHARS (encoded_file))) |
| 570 | continue; |
| 571 | |
| 572 | if (file_name_completion_stat (encoded_dir, dp, &st) < 0) |
| 573 | continue; |
| 574 | |
| 575 | directoryp = ((st.st_mode & S_IFMT) == S_IFDIR); |
| 576 | tem = Qnil; |
| 577 | if (directoryp) |
| 578 | { |
| 579 | #ifndef TRIVIAL_DIRECTORY_ENTRY |
| 580 | #define TRIVIAL_DIRECTORY_ENTRY(n) (!strcmp (n, ".") || !strcmp (n, "..")) |
| 581 | #endif |
| 582 | /* "." and ".." are never interesting as completions, and are |
| 583 | actually in the way in a directory with only one file. */ |
| 584 | if (!passcount && TRIVIAL_DIRECTORY_ENTRY (dp->d_name)) |
| 585 | continue; |
| 586 | if (!passcount && len > SCHARS (encoded_file)) |
| 587 | /* Ignore directories if they match an element of |
| 588 | completion-ignored-extensions which ends in a slash. */ |
| 589 | for (tem = Vcompletion_ignored_extensions; |
| 590 | CONSP (tem); tem = XCDR (tem)) |
| 591 | { |
| 592 | int elt_len; |
| 593 | unsigned char *p1; |
| 594 | |
| 595 | elt = XCAR (tem); |
| 596 | if (!STRINGP (elt)) |
| 597 | continue; |
| 598 | /* Need to encode ELT, since scmp compares unibyte |
| 599 | strings only. */ |
| 600 | elt = ENCODE_FILE (elt); |
| 601 | elt_len = SCHARS (elt) - 1; /* -1 for trailing / */ |
| 602 | if (elt_len <= 0) |
| 603 | continue; |
| 604 | p1 = SDATA (elt); |
| 605 | if (p1[elt_len] != '/') |
| 606 | continue; |
| 607 | skip = len - elt_len; |
| 608 | if (skip < 0) |
| 609 | continue; |
| 610 | |
| 611 | if (0 <= scmp (dp->d_name + skip, p1, elt_len)) |
| 612 | continue; |
| 613 | break; |
| 614 | } |
| 615 | } |
| 616 | else |
| 617 | { |
| 618 | /* Compare extensions-to-be-ignored against end of this file name */ |
| 619 | /* if name is not an exact match against specified string */ |
| 620 | if (!passcount && len > SCHARS (encoded_file)) |
| 621 | /* and exit this for loop if a match is found */ |
| 622 | for (tem = Vcompletion_ignored_extensions; |
| 623 | CONSP (tem); tem = XCDR (tem)) |
| 624 | { |
| 625 | elt = XCAR (tem); |
| 626 | if (!STRINGP (elt)) continue; |
| 627 | /* Need to encode ELT, since scmp compares unibyte |
| 628 | strings only. */ |
| 629 | elt = ENCODE_FILE (elt); |
| 630 | skip = len - SCHARS (elt); |
| 631 | if (skip < 0) continue; |
| 632 | |
| 633 | if (0 <= scmp (dp->d_name + skip, |
| 634 | SDATA (elt), |
| 635 | SCHARS (elt))) |
| 636 | continue; |
| 637 | break; |
| 638 | } |
| 639 | } |
| 640 | |
| 641 | /* If an ignored-extensions match was found, |
| 642 | don't process this name as a completion. */ |
| 643 | if (!passcount && CONSP (tem)) |
| 644 | continue; |
| 645 | |
| 646 | /* FIXME: If we move this `decode' earlier we can eliminate |
| 647 | the repeated ENCODE_FILE on Vcompletion_ignored_extensions. */ |
| 648 | name = make_unibyte_string (dp->d_name, len); |
| 649 | name = DECODE_FILE (name); |
| 650 | |
| 651 | if (!passcount) |
| 652 | { |
| 653 | Lisp_Object regexps; |
| 654 | Lisp_Object zero; |
| 655 | XSETFASTINT (zero, 0); |
| 656 | |
| 657 | /* Ignore this element if it fails to match all the regexps. */ |
| 658 | for (regexps = Vcompletion_regexp_list; CONSP (regexps); |
| 659 | regexps = XCDR (regexps)) |
| 660 | if (fast_string_match (XCAR (regexps), name) < 0) |
| 661 | break; |
| 662 | if (CONSP (regexps)) |
| 663 | continue; |
| 664 | } |
| 665 | |
| 666 | /* This is a possible completion */ |
| 667 | if (directoryp) |
| 668 | { |
| 669 | /* This completion is a directory; make it end with '/' */ |
| 670 | name = Ffile_name_as_directory (name); |
| 671 | } |
| 672 | |
| 673 | /* Test the predicate, if any. */ |
| 674 | |
| 675 | if (!NILP (predicate)) |
| 676 | { |
| 677 | Lisp_Object decoded; |
| 678 | Lisp_Object val; |
| 679 | struct gcpro gcpro1; |
| 680 | |
| 681 | GCPRO1 (name); |
| 682 | decoded = Fexpand_file_name (name, dirname); |
| 683 | val = call1 (predicate, decoded); |
| 684 | UNGCPRO; |
| 685 | |
| 686 | if (NILP (val)) |
| 687 | continue; |
| 688 | } |
| 689 | |
| 690 | /* Suitably record this match. */ |
| 691 | |
| 692 | matchcount++; |
| 693 | |
| 694 | if (all_flag) |
| 695 | bestmatch = Fcons (name, bestmatch); |
| 696 | else if (NILP (bestmatch)) |
| 697 | { |
| 698 | bestmatch = name; |
| 699 | bestmatchsize = SCHARS (name); |
| 700 | } |
| 701 | else |
| 702 | { |
| 703 | Lisp_Object zero = make_number (0); |
| 704 | /* FIXME: This is a copy of the code in Ftry_completion. */ |
| 705 | compare = min (bestmatchsize, SCHARS (name)); |
| 706 | tem = Fcompare_strings (bestmatch, zero, |
| 707 | make_number (compare), |
| 708 | name, zero, |
| 709 | make_number (compare), |
| 710 | completion_ignore_case ? Qt : Qnil); |
| 711 | if (EQ (tem, Qt)) |
| 712 | matchsize = compare; |
| 713 | else if (XINT (tem) < 0) |
| 714 | matchsize = - XINT (tem) - 1; |
| 715 | else |
| 716 | matchsize = XINT (tem) - 1; |
| 717 | |
| 718 | if (completion_ignore_case) |
| 719 | { |
| 720 | /* If this is an exact match except for case, |
| 721 | use it as the best match rather than one that is not |
| 722 | an exact match. This way, we get the case pattern |
| 723 | of the actual match. */ |
| 724 | /* This tests that the current file is an exact match |
| 725 | but BESTMATCH is not (it is too long). */ |
| 726 | if ((matchsize == SCHARS (name) |
| 727 | && matchsize + !!directoryp |
| 728 | < SCHARS (bestmatch)) |
| 729 | || |
| 730 | /* If there is no exact match ignoring case, |
| 731 | prefer a match that does not change the case |
| 732 | of the input. */ |
| 733 | /* If there is more than one exact match aside from |
| 734 | case, and one of them is exact including case, |
| 735 | prefer that one. */ |
| 736 | /* This == checks that, of current file and BESTMATCH, |
| 737 | either both or neither are exact. */ |
| 738 | (((matchsize == SCHARS (name)) |
| 739 | == |
| 740 | (matchsize + !!directoryp == SCHARS (bestmatch))) |
| 741 | && (tem = Fcompare_strings (name, zero, |
| 742 | make_number (SCHARS (file)), |
| 743 | file, zero, |
| 744 | Qnil, |
| 745 | Qnil), |
| 746 | EQ (Qt, tem)) |
| 747 | && (tem = Fcompare_strings (bestmatch, zero, |
| 748 | make_number (SCHARS (file)), |
| 749 | file, zero, |
| 750 | Qnil, |
| 751 | Qnil), |
| 752 | ! EQ (Qt, tem)))) |
| 753 | bestmatch = name; |
| 754 | } |
| 755 | bestmatchsize = matchsize; |
| 756 | } |
| 757 | } |
| 758 | /* This closes the directory. */ |
| 759 | bestmatch = unbind_to (inner_count, bestmatch); |
| 760 | } |
| 761 | |
| 762 | UNGCPRO; |
| 763 | bestmatch = unbind_to (count, bestmatch); |
| 764 | |
| 765 | if (all_flag || NILP (bestmatch)) |
| 766 | return bestmatch; |
| 767 | if (matchcount == 1 && bestmatchsize == SCHARS (file)) |
| 768 | return Qt; |
| 769 | bestmatch = Fsubstring (bestmatch, make_number (0), |
| 770 | make_number (bestmatchsize)); |
| 771 | return bestmatch; |
| 772 | } |
| 773 | |
| 774 | /* Compare exactly LEN chars of strings at S1 and S2, |
| 775 | ignoring case if appropriate. |
| 776 | Return -1 if strings match, |
| 777 | else number of chars that match at the beginning. */ |
| 778 | |
| 779 | static int |
| 780 | scmp (s1, s2, len) |
| 781 | register unsigned char *s1, *s2; |
| 782 | int len; |
| 783 | { |
| 784 | register int l = len; |
| 785 | |
| 786 | if (completion_ignore_case) |
| 787 | { |
| 788 | while (l && DOWNCASE (*s1++) == DOWNCASE (*s2++)) |
| 789 | l--; |
| 790 | } |
| 791 | else |
| 792 | { |
| 793 | while (l && *s1++ == *s2++) |
| 794 | l--; |
| 795 | } |
| 796 | if (l == 0) |
| 797 | return -1; |
| 798 | else |
| 799 | return len - l; |
| 800 | } |
| 801 | |
| 802 | static int |
| 803 | file_name_completion_stat (dirname, dp, st_addr) |
| 804 | Lisp_Object dirname; |
| 805 | DIRENTRY *dp; |
| 806 | struct stat *st_addr; |
| 807 | { |
| 808 | int len = NAMLEN (dp); |
| 809 | int pos = SCHARS (dirname); |
| 810 | int value; |
| 811 | char *fullname = (char *) alloca (len + pos + 2); |
| 812 | |
| 813 | #ifdef MSDOS |
| 814 | #if __DJGPP__ > 1 |
| 815 | /* Some fields of struct stat are *very* expensive to compute on MS-DOS, |
| 816 | but aren't required here. Avoid computing the following fields: |
| 817 | st_inode, st_size and st_nlink for directories, and the execute bits |
| 818 | in st_mode for non-directory files with non-standard extensions. */ |
| 819 | |
| 820 | unsigned short save_djstat_flags = _djstat_flags; |
| 821 | |
| 822 | _djstat_flags = _STAT_INODE | _STAT_EXEC_MAGIC | _STAT_DIRSIZE; |
| 823 | #endif /* __DJGPP__ > 1 */ |
| 824 | #endif /* MSDOS */ |
| 825 | |
| 826 | bcopy (SDATA (dirname), fullname, pos); |
| 827 | #ifndef VMS |
| 828 | if (!IS_DIRECTORY_SEP (fullname[pos - 1])) |
| 829 | fullname[pos++] = DIRECTORY_SEP; |
| 830 | #endif |
| 831 | |
| 832 | bcopy (dp->d_name, fullname + pos, len); |
| 833 | fullname[pos + len] = 0; |
| 834 | |
| 835 | #ifdef S_IFLNK |
| 836 | /* We want to return success if a link points to a nonexistent file, |
| 837 | but we want to return the status for what the link points to, |
| 838 | in case it is a directory. */ |
| 839 | value = lstat (fullname, st_addr); |
| 840 | stat (fullname, st_addr); |
| 841 | return value; |
| 842 | #else |
| 843 | value = stat (fullname, st_addr); |
| 844 | #ifdef MSDOS |
| 845 | #if __DJGPP__ > 1 |
| 846 | _djstat_flags = save_djstat_flags; |
| 847 | #endif /* __DJGPP__ > 1 */ |
| 848 | #endif /* MSDOS */ |
| 849 | return value; |
| 850 | #endif /* S_IFLNK */ |
| 851 | } |
| 852 | \f |
| 853 | #ifdef VMS |
| 854 | |
| 855 | DEFUN ("file-name-all-versions", Ffile_name_all_versions, |
| 856 | Sfile_name_all_versions, 2, 2, 0, |
| 857 | doc: /* Return a list of all versions of file name FILE in directory DIRECTORY. */) |
| 858 | (file, directory) |
| 859 | Lisp_Object file, directory; |
| 860 | { |
| 861 | return file_name_completion (file, directory, 1, 1, Qnil); |
| 862 | } |
| 863 | |
| 864 | DEFUN ("file-version-limit", Ffile_version_limit, Sfile_version_limit, 1, 1, 0, |
| 865 | doc: /* Return the maximum number of versions allowed for FILE. |
| 866 | Returns nil if the file cannot be opened or if there is no version limit. */) |
| 867 | (filename) |
| 868 | Lisp_Object filename; |
| 869 | { |
| 870 | Lisp_Object retval; |
| 871 | struct FAB fab; |
| 872 | struct RAB rab; |
| 873 | struct XABFHC xabfhc; |
| 874 | int status; |
| 875 | |
| 876 | filename = Fexpand_file_name (filename, Qnil); |
| 877 | fab = cc$rms_fab; |
| 878 | xabfhc = cc$rms_xabfhc; |
| 879 | fab.fab$l_fna = SDATA (filename); |
| 880 | fab.fab$b_fns = strlen (fab.fab$l_fna); |
| 881 | fab.fab$l_xab = (char *) &xabfhc; |
| 882 | status = sys$open (&fab, 0, 0); |
| 883 | if (status != RMS$_NORMAL) /* Probably non-existent file */ |
| 884 | return Qnil; |
| 885 | sys$close (&fab, 0, 0); |
| 886 | if (xabfhc.xab$w_verlimit == 32767) |
| 887 | return Qnil; /* No version limit */ |
| 888 | else |
| 889 | return make_number (xabfhc.xab$w_verlimit); |
| 890 | } |
| 891 | |
| 892 | #endif /* VMS */ |
| 893 | \f |
| 894 | Lisp_Object |
| 895 | make_time (time) |
| 896 | time_t time; |
| 897 | { |
| 898 | return Fcons (make_number (time >> 16), |
| 899 | Fcons (make_number (time & 0177777), Qnil)); |
| 900 | } |
| 901 | |
| 902 | static char * |
| 903 | stat_uname (struct stat *st) |
| 904 | { |
| 905 | #ifdef WINDOWSNT |
| 906 | return st->st_uname; |
| 907 | #else |
| 908 | struct passwd *pw = (struct passwd *) getpwuid (st->st_uid); |
| 909 | |
| 910 | if (pw) |
| 911 | return pw->pw_name; |
| 912 | else |
| 913 | return NULL; |
| 914 | #endif |
| 915 | } |
| 916 | |
| 917 | static char * |
| 918 | stat_gname (struct stat *st) |
| 919 | { |
| 920 | #ifdef WINDOWSNT |
| 921 | return st->st_gname; |
| 922 | #else |
| 923 | struct group *gr = (struct group *) getgrgid (st->st_gid); |
| 924 | |
| 925 | if (gr) |
| 926 | return gr->gr_name; |
| 927 | else |
| 928 | return NULL; |
| 929 | #endif |
| 930 | } |
| 931 | |
| 932 | DEFUN ("file-attributes", Ffile_attributes, Sfile_attributes, 1, 2, 0, |
| 933 | doc: /* Return a list of attributes of file FILENAME. |
| 934 | Value is nil if specified file cannot be opened. |
| 935 | |
| 936 | ID-FORMAT specifies the preferred format of attributes uid and gid (see |
| 937 | below) - valid values are 'string and 'integer. The latter is the default, |
| 938 | but we plan to change that, so you should specify a non-nil value for |
| 939 | ID-FORMAT if you use the returned uid or gid. |
| 940 | |
| 941 | Elements of the attribute list are: |
| 942 | 0. t for directory, string (name linked to) for symbolic link, or nil. |
| 943 | 1. Number of links to file. |
| 944 | 2. File uid as a string or an integer. If a string value cannot be |
| 945 | looked up, the integer value is returned. |
| 946 | 3. File gid, likewise. |
| 947 | 4. Last access time, as a list of two integers. |
| 948 | First integer has high-order 16 bits of time, second has low 16 bits. |
| 949 | 5. Last modification time, likewise. |
| 950 | 6. Last status change time, likewise. |
| 951 | 7. Size in bytes. |
| 952 | This is a floating point number if the size is too large for an integer. |
| 953 | 8. File modes, as a string of ten letters or dashes as in ls -l. |
| 954 | 9. t if file's gid would change if file were deleted and recreated. |
| 955 | 10. inode number. If inode number is larger than the Emacs integer, |
| 956 | but still fits into a 32-bit number, this is a cons cell containing two |
| 957 | integers: first the high part, then the low 16 bits. If the inode number |
| 958 | is wider than 32 bits, this is a cons cell containing three integers: |
| 959 | first the high 24 bits, then middle 24 bits, and finally the low 16 bits. |
| 960 | 11. Device number. If it is larger than the Emacs integer, this is |
| 961 | a cons cell, similar to the inode number. */) |
| 962 | (filename, id_format) |
| 963 | Lisp_Object filename, id_format; |
| 964 | { |
| 965 | Lisp_Object values[12]; |
| 966 | Lisp_Object encoded; |
| 967 | struct stat s; |
| 968 | #if defined (BSD4_2) || defined (BSD4_3) |
| 969 | Lisp_Object dirname; |
| 970 | struct stat sdir; |
| 971 | #endif |
| 972 | char modes[10]; |
| 973 | Lisp_Object handler; |
| 974 | struct gcpro gcpro1; |
| 975 | EMACS_INT ino; |
| 976 | char *uname, *gname; |
| 977 | |
| 978 | filename = Fexpand_file_name (filename, Qnil); |
| 979 | |
| 980 | /* If the file name has special constructs in it, |
| 981 | call the corresponding file handler. */ |
| 982 | handler = Ffind_file_name_handler (filename, Qfile_attributes); |
| 983 | if (!NILP (handler)) |
| 984 | { /* Only pass the extra arg if it is used to help backward compatibility |
| 985 | with old file handlers which do not implement the new arg. --Stef */ |
| 986 | if (NILP (id_format)) |
| 987 | return call2 (handler, Qfile_attributes, filename); |
| 988 | else |
| 989 | return call3 (handler, Qfile_attributes, filename, id_format); |
| 990 | } |
| 991 | |
| 992 | GCPRO1 (filename); |
| 993 | encoded = ENCODE_FILE (filename); |
| 994 | UNGCPRO; |
| 995 | |
| 996 | if (lstat (SDATA (encoded), &s) < 0) |
| 997 | return Qnil; |
| 998 | |
| 999 | switch (s.st_mode & S_IFMT) |
| 1000 | { |
| 1001 | default: |
| 1002 | values[0] = Qnil; break; |
| 1003 | case S_IFDIR: |
| 1004 | values[0] = Qt; break; |
| 1005 | #ifdef S_IFLNK |
| 1006 | case S_IFLNK: |
| 1007 | values[0] = Ffile_symlink_p (filename); break; |
| 1008 | #endif |
| 1009 | } |
| 1010 | values[1] = make_number (s.st_nlink); |
| 1011 | if (NILP (id_format) || EQ (id_format, Qinteger)) |
| 1012 | { |
| 1013 | values[2] = make_fixnum_or_float (s.st_uid); |
| 1014 | values[3] = make_fixnum_or_float (s.st_gid); |
| 1015 | } |
| 1016 | else |
| 1017 | { |
| 1018 | BLOCK_INPUT; |
| 1019 | uname = stat_uname (&s); |
| 1020 | values[2] = (uname ? build_string (uname) |
| 1021 | : make_fixnum_or_float (s.st_uid)); |
| 1022 | gname = stat_gname (&s); |
| 1023 | values[3] = (gname ? build_string (gname) |
| 1024 | : make_fixnum_or_float (s.st_gid)); |
| 1025 | UNBLOCK_INPUT; |
| 1026 | } |
| 1027 | values[4] = make_time (s.st_atime); |
| 1028 | values[5] = make_time (s.st_mtime); |
| 1029 | values[6] = make_time (s.st_ctime); |
| 1030 | values[7] = make_number (s.st_size); |
| 1031 | /* If the size is out of range for an integer, return a float. */ |
| 1032 | if (XINT (values[7]) != s.st_size) |
| 1033 | values[7] = make_float ((double)s.st_size); |
| 1034 | /* If the size is negative, and its type is long, convert it back to |
| 1035 | positive. */ |
| 1036 | if (s.st_size < 0 && sizeof (s.st_size) == sizeof (long)) |
| 1037 | values[7] = make_float ((double) ((unsigned long) s.st_size)); |
| 1038 | |
| 1039 | filemodestring (&s, modes); |
| 1040 | values[8] = make_string (modes, 10); |
| 1041 | #if defined (BSD4_2) || defined (BSD4_3) /* file gid will be dir gid */ |
| 1042 | dirname = Ffile_name_directory (filename); |
| 1043 | if (! NILP (dirname)) |
| 1044 | encoded = ENCODE_FILE (dirname); |
| 1045 | if (! NILP (dirname) && stat (SDATA (encoded), &sdir) == 0) |
| 1046 | values[9] = (sdir.st_gid != s.st_gid) ? Qt : Qnil; |
| 1047 | else /* if we can't tell, assume worst */ |
| 1048 | values[9] = Qt; |
| 1049 | #else /* file gid will be egid */ |
| 1050 | values[9] = (s.st_gid != getegid ()) ? Qt : Qnil; |
| 1051 | #endif /* BSD4_2 (or BSD4_3) */ |
| 1052 | /* Shut up GCC warnings in FIXNUM_OVERFLOW_P below. */ |
| 1053 | if (sizeof (s.st_ino) > sizeof (ino)) |
| 1054 | ino = (EMACS_INT)(s.st_ino & 0xffffffff); |
| 1055 | else |
| 1056 | ino = s.st_ino; |
| 1057 | if (!FIXNUM_OVERFLOW_P (ino) |
| 1058 | && (sizeof (s.st_ino) <= sizeof (ino) || (s.st_ino & ~INTMASK) == 0)) |
| 1059 | /* Keep the most common cases as integers. */ |
| 1060 | values[10] = make_number (ino); |
| 1061 | else if (sizeof (s.st_ino) <= sizeof (ino) |
| 1062 | || ((s.st_ino >> 16) & ~INTMASK) == 0) |
| 1063 | /* To allow inode numbers larger than VALBITS, separate the bottom |
| 1064 | 16 bits. */ |
| 1065 | values[10] = Fcons (make_number ((EMACS_INT)(s.st_ino >> 16)), |
| 1066 | make_number ((EMACS_INT)(s.st_ino & 0xffff))); |
| 1067 | else |
| 1068 | { |
| 1069 | /* To allow inode numbers beyond 32 bits, separate into 2 24-bit |
| 1070 | high parts and a 16-bit bottom part. */ |
| 1071 | EMACS_INT high_ino = s.st_ino >> 32; |
| 1072 | EMACS_INT low_ino = s.st_ino & 0xffffffff; |
| 1073 | |
| 1074 | values[10] = Fcons (make_number (high_ino >> 8), |
| 1075 | Fcons (make_number (((high_ino & 0xff) << 16) |
| 1076 | + (low_ino >> 16)), |
| 1077 | make_number (low_ino & 0xffff))); |
| 1078 | } |
| 1079 | |
| 1080 | /* Likewise for device, but don't let it become negative. We used |
| 1081 | to use FIXNUM_OVERFLOW_P here, but that won't catch large |
| 1082 | positive numbers such as 0xFFEEDDCC. */ |
| 1083 | if ((EMACS_INT)s.st_dev < 0 |
| 1084 | || (EMACS_INT)s.st_dev > MOST_POSITIVE_FIXNUM) |
| 1085 | values[11] = Fcons (make_number (s.st_dev >> 16), |
| 1086 | make_number (s.st_dev & 0xffff)); |
| 1087 | else |
| 1088 | values[11] = make_number (s.st_dev); |
| 1089 | |
| 1090 | return Flist (sizeof(values) / sizeof(values[0]), values); |
| 1091 | } |
| 1092 | |
| 1093 | DEFUN ("file-attributes-lessp", Ffile_attributes_lessp, Sfile_attributes_lessp, 2, 2, 0, |
| 1094 | doc: /* Return t if first arg file attributes list is less than second. |
| 1095 | Comparison is in lexicographic order and case is significant. */) |
| 1096 | (f1, f2) |
| 1097 | Lisp_Object f1, f2; |
| 1098 | { |
| 1099 | return Fstring_lessp (Fcar (f1), Fcar (f2)); |
| 1100 | } |
| 1101 | \f |
| 1102 | void |
| 1103 | syms_of_dired () |
| 1104 | { |
| 1105 | Qdirectory_files = intern ("directory-files"); |
| 1106 | Qdirectory_files_and_attributes = intern ("directory-files-and-attributes"); |
| 1107 | Qfile_name_completion = intern ("file-name-completion"); |
| 1108 | Qfile_name_all_completions = intern ("file-name-all-completions"); |
| 1109 | Qfile_attributes = intern ("file-attributes"); |
| 1110 | Qfile_attributes_lessp = intern ("file-attributes-lessp"); |
| 1111 | |
| 1112 | staticpro (&Qdirectory_files); |
| 1113 | staticpro (&Qdirectory_files_and_attributes); |
| 1114 | staticpro (&Qfile_name_completion); |
| 1115 | staticpro (&Qfile_name_all_completions); |
| 1116 | staticpro (&Qfile_attributes); |
| 1117 | staticpro (&Qfile_attributes_lessp); |
| 1118 | |
| 1119 | defsubr (&Sdirectory_files); |
| 1120 | defsubr (&Sdirectory_files_and_attributes); |
| 1121 | defsubr (&Sfile_name_completion); |
| 1122 | #ifdef VMS |
| 1123 | defsubr (&Sfile_name_all_versions); |
| 1124 | defsubr (&Sfile_version_limit); |
| 1125 | #endif /* VMS */ |
| 1126 | defsubr (&Sfile_name_all_completions); |
| 1127 | defsubr (&Sfile_attributes); |
| 1128 | defsubr (&Sfile_attributes_lessp); |
| 1129 | |
| 1130 | DEFVAR_LISP ("completion-ignored-extensions", &Vcompletion_ignored_extensions, |
| 1131 | doc: /* Completion ignores file names ending in any string in this list. |
| 1132 | It does not ignore them if all possible completions end in one of |
| 1133 | these strings or when displaying a list of completions. |
| 1134 | It ignores directory names if they match any string in this list which |
| 1135 | ends in a slash. */); |
| 1136 | Vcompletion_ignored_extensions = Qnil; |
| 1137 | } |
| 1138 | |
| 1139 | /* arch-tag: 1ac8deca-4d8f-4d41-ade9-089154d98c03 |
| 1140 | (do not change this comment) */ |