Commit | Line | Data |
---|---|---|
570d7624 | 1 | /* File IO for GNU Emacs. |
0b5538bd TTN |
2 | Copyright (C) 1985, 1986, 1987, 1988, 1993, 1994, 1995, 1996, |
3 | 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, | |
8cabe764 | 4 | 2005, 2006, 2007, 2008 Free Software Foundation, Inc. |
570d7624 JB |
5 | |
6 | This file is part of GNU Emacs. | |
7 | ||
8 | GNU Emacs is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
684d6f5b | 10 | the Free Software Foundation; either version 3, or (at your option) |
570d7624 JB |
11 | any later version. |
12 | ||
13 | GNU Emacs is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with GNU Emacs; see the file COPYING. If not, write to | |
4fc5845f LK |
20 | the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
21 | Boston, MA 02110-1301, USA. */ | |
570d7624 | 22 | |
18160b98 | 23 | #include <config.h> |
77a28bbf | 24 | #include <limits.h> |
570d7624 | 25 | |
612221ab | 26 | #ifdef HAVE_FCNTL_H |
bb369dc6 RS |
27 | #include <fcntl.h> |
28 | #endif | |
29 | ||
1b335d29 | 30 | #include <stdio.h> |
570d7624 JB |
31 | #include <sys/types.h> |
32 | #include <sys/stat.h> | |
bfb61299 | 33 | |
29beb080 RS |
34 | #ifdef HAVE_UNISTD_H |
35 | #include <unistd.h> | |
36 | #endif | |
37 | ||
f73b0ada BF |
38 | #if !defined (S_ISLNK) && defined (S_IFLNK) |
39 | # define S_ISLNK(m) (((m) & S_IFMT) == S_IFLNK) | |
40 | #endif | |
41 | ||
bb369dc6 RS |
42 | #if !defined (S_ISFIFO) && defined (S_IFIFO) |
43 | # define S_ISFIFO(m) (((m) & S_IFMT) == S_IFIFO) | |
44 | #endif | |
45 | ||
f73b0ada BF |
46 | #if !defined (S_ISREG) && defined (S_IFREG) |
47 | # define S_ISREG(m) (((m) & S_IFMT) == S_IFREG) | |
48 | #endif | |
49 | ||
5b9c0a1d | 50 | #ifdef HAVE_PWD_H |
570d7624 | 51 | #include <pwd.h> |
bfb61299 JB |
52 | #endif |
53 | ||
570d7624 | 54 | #include <ctype.h> |
bfb61299 JB |
55 | |
56 | #ifdef VMS | |
3d9f5ce2 | 57 | #include "vmsdir.h" |
bfb61299 JB |
58 | #include <perror.h> |
59 | #include <stddef.h> | |
60 | #include <string.h> | |
bfb61299 JB |
61 | #endif |
62 | ||
570d7624 JB |
63 | #include <errno.h> |
64 | ||
bfb61299 | 65 | #ifndef vax11c |
f12ef5eb | 66 | #ifndef USE_CRT_DLL |
570d7624 | 67 | extern int errno; |
570d7624 | 68 | #endif |
f12ef5eb | 69 | #endif |
570d7624 | 70 | |
570d7624 | 71 | #include "lisp.h" |
8d4e077b | 72 | #include "intervals.h" |
570d7624 | 73 | #include "buffer.h" |
db327c7e | 74 | #include "character.h" |
6fdaa9a0 | 75 | #include "coding.h" |
570d7624 | 76 | #include "window.h" |
67c08d6c | 77 | #include "blockinput.h" |
385ed61f KL |
78 | #include "frame.h" |
79 | #include "dispextern.h" | |
570d7624 | 80 | |
5e570b75 RS |
81 | #ifdef WINDOWSNT |
82 | #define NOMINMAX 1 | |
83 | #include <windows.h> | |
84 | #include <stdlib.h> | |
85 | #include <fcntl.h> | |
86 | #endif /* not WINDOWSNT */ | |
87 | ||
7990d02a EZ |
88 | #ifdef MSDOS |
89 | #include "msdos.h" | |
90 | #include <sys/param.h> | |
91 | #if __DJGPP__ >= 2 | |
92 | #include <fcntl.h> | |
93 | #include <string.h> | |
94 | #endif | |
95 | #endif | |
96 | ||
199607e4 RS |
97 | #ifdef DOS_NT |
98 | #define CORRECT_DIR_SEPS(s) \ | |
99 | do { if ('/' == DIRECTORY_SEP) dostounix_filename (s); \ | |
100 | else unixtodos_filename (s); \ | |
101 | } while (0) | |
102 | /* On Windows, drive letters must be alphabetic - on DOS, the Netware | |
103 | redirector allows the six letters between 'Z' and 'a' as well. */ | |
104 | #ifdef MSDOS | |
105 | #define IS_DRIVE(x) ((x) >= 'A' && (x) <= 'z') | |
106 | #endif | |
107 | #ifdef WINDOWSNT | |
108 | #define IS_DRIVE(x) isalpha (x) | |
109 | #endif | |
f54b565c MB |
110 | /* Need to lower-case the drive letter, or else expanded |
111 | filenames will sometimes compare inequal, because | |
112 | `expand-file-name' doesn't always down-case the drive letter. */ | |
113 | #define DRIVE_LETTER(x) (tolower (x)) | |
199607e4 RS |
114 | #endif |
115 | ||
570d7624 | 116 | #ifdef VMS |
570d7624 JB |
117 | #include <file.h> |
118 | #include <rmsdef.h> | |
119 | #include <fab.h> | |
120 | #include <nam.h> | |
121 | #endif | |
122 | ||
de5bf5d3 | 123 | #include "systime.h" |
570d7624 JB |
124 | |
125 | #ifdef HPUX | |
126 | #include <netio.h> | |
9b7828a5 | 127 | #ifndef HPUX8 |
47e7b9e5 | 128 | #ifndef HPUX9 |
570d7624 JB |
129 | #include <errnet.h> |
130 | #endif | |
9b7828a5 | 131 | #endif |
47e7b9e5 | 132 | #endif |
570d7624 | 133 | |
9c856db9 GM |
134 | #include "commands.h" |
135 | extern int use_dialog_box; | |
6b61353c | 136 | extern int use_file_dialog; |
9c856db9 | 137 | |
570d7624 JB |
138 | #ifndef O_WRONLY |
139 | #define O_WRONLY 1 | |
140 | #endif | |
141 | ||
4018b5ef RS |
142 | #ifndef O_RDONLY |
143 | #define O_RDONLY 0 | |
144 | #endif | |
145 | ||
8f6df9b5 EZ |
146 | #ifndef S_ISLNK |
147 | # define lstat stat | |
148 | #endif | |
149 | ||
c1558952 TTN |
150 | #ifndef FILE_SYSTEM_CASE |
151 | #define FILE_SYSTEM_CASE(filename) (filename) | |
152 | #endif | |
153 | ||
570d7624 JB |
154 | /* Nonzero during writing of auto-save files */ |
155 | int auto_saving; | |
156 | ||
157 | /* Set by auto_save_1 to mode of original file so Fwrite_region will create | |
158 | a new file with the same mode as the original */ | |
159 | int auto_save_mode_bits; | |
160 | ||
356a6224 KH |
161 | /* The symbol bound to coding-system-for-read when |
162 | insert-file-contents is called for recovering a file. This is not | |
163 | an actual coding system name, but just an indicator to tell | |
164 | insert-file-contents to use `emacs-mule' with a special flag for | |
165 | auto saving and recovering a file. */ | |
166 | Lisp_Object Qauto_save_coding; | |
167 | ||
b1d1b865 RS |
168 | /* Coding system for file names, or nil if none. */ |
169 | Lisp_Object Vfile_name_coding_system; | |
170 | ||
cd913586 KH |
171 | /* Coding system for file names used only when |
172 | Vfile_name_coding_system is nil. */ | |
173 | Lisp_Object Vdefault_file_name_coding_system; | |
174 | ||
199607e4 | 175 | /* Alist of elements (REGEXP . HANDLER) for file names |
32f4334d RS |
176 | whose I/O is done with a special handler. */ |
177 | Lisp_Object Vfile_name_handler_alist; | |
178 | ||
f6c9b683 RS |
179 | /* Property name of a file name handler, |
180 | which gives a list of operations it handles.. */ | |
181 | Lisp_Object Qoperations; | |
182 | ||
0d420e88 BG |
183 | /* Lisp functions for translating file formats */ |
184 | Lisp_Object Qformat_decode, Qformat_annotate_function; | |
185 | ||
c9e82392 | 186 | /* Function to be called to decide a coding system of a reading file. */ |
0414b394 | 187 | Lisp_Object Vset_auto_coding_function; |
c9e82392 | 188 | |
d6a3cc15 RS |
189 | /* Functions to be called to process text properties in inserted file. */ |
190 | Lisp_Object Vafter_insert_file_functions; | |
191 | ||
2080470e | 192 | /* Lisp function for setting buffer-file-coding-system and the |
b6426b03 | 193 | multibyteness of the current buffer after inserting a file. */ |
2080470e | 194 | Lisp_Object Qafter_insert_file_set_coding; |
b6426b03 | 195 | |
d6a3cc15 RS |
196 | /* Functions to be called to create text property annotations for file. */ |
197 | Lisp_Object Vwrite_region_annotate_functions; | |
bd235610 | 198 | Lisp_Object Qwrite_region_annotate_functions; |
d6a3cc15 | 199 | |
6fc6f94b RS |
200 | /* During build_annotations, each time an annotation function is called, |
201 | this holds the annotations made by the previous functions. */ | |
202 | Lisp_Object Vwrite_region_annotations_so_far; | |
203 | ||
e54d3b5d RS |
204 | /* File name in which we write a list of all our auto save files. */ |
205 | Lisp_Object Vauto_save_list_file_name; | |
206 | ||
59ffe07d | 207 | /* Function to call to read a file name. */ |
efdc16c9 | 208 | Lisp_Object Vread_file_name_function; |
59ffe07d KS |
209 | |
210 | /* Current predicate used by read_file_name_internal. */ | |
211 | Lisp_Object Vread_file_name_predicate; | |
212 | ||
316ef0dc JPW |
213 | /* Nonzero means completion ignores case when reading file name. */ |
214 | int read_file_name_completion_ignore_case; | |
215 | ||
570d7624 JB |
216 | /* Nonzero means, when reading a filename in the minibuffer, |
217 | start out by inserting the default directory into the minibuffer. */ | |
218 | int insert_default_directory; | |
219 | ||
220 | /* On VMS, nonzero means write new files with record format stmlf. | |
221 | Zero means use var format. */ | |
222 | int vms_stmlf_recfm; | |
223 | ||
199607e4 RS |
224 | /* On NT, specifies the directory separator character, used (eg.) when |
225 | expanding file names. This can be bound to / or \. */ | |
226 | Lisp_Object Vdirectory_sep_char; | |
227 | ||
ccf61795 RF |
228 | #ifdef HAVE_FSYNC |
229 | /* Nonzero means skip the call to fsync in Fwrite-region. */ | |
230 | int write_region_inhibit_fsync; | |
231 | #endif | |
232 | ||
84f6296a RS |
233 | extern Lisp_Object Vuser_login_name; |
234 | ||
c1c4693e RS |
235 | #ifdef WINDOWSNT |
236 | extern Lisp_Object Vw32_get_true_file_attributes; | |
237 | #endif | |
238 | ||
84f6296a RS |
239 | extern int minibuf_level; |
240 | ||
a8c828be RS |
241 | extern int minibuffer_auto_raise; |
242 | ||
75fa7206 RS |
243 | extern int history_delete_duplicates; |
244 | ||
a65970a0 RS |
245 | /* These variables describe handlers that have "already" had a chance |
246 | to handle the current operation. | |
247 | ||
248 | Vinhibit_file_name_handlers is a list of file name handlers. | |
249 | Vinhibit_file_name_operation is the operation being handled. | |
250 | If we try to handle that operation, we ignore those handlers. */ | |
251 | ||
82c2d839 | 252 | static Lisp_Object Vinhibit_file_name_handlers; |
a65970a0 | 253 | static Lisp_Object Vinhibit_file_name_operation; |
82c2d839 | 254 | |
c0b7b21c | 255 | Lisp_Object Qfile_error, Qfile_already_exists, Qfile_date_error; |
505ab9bc | 256 | Lisp_Object Qexcl; |
15c65264 RS |
257 | Lisp_Object Qfile_name_history; |
258 | ||
d6a3cc15 RS |
259 | Lisp_Object Qcar_less_than_car; |
260 | ||
ce51c54c | 261 | static int a_write P_ ((int, Lisp_Object, int, int, |
b9013200 | 262 | Lisp_Object *, struct coding_system *)); |
ce51c54c KH |
263 | static int e_write P_ ((int, Lisp_Object, int, int, struct coding_system *)); |
264 | ||
ec7adf26 | 265 | \f |
5d01d666 | 266 | void |
570d7624 | 267 | report_file_error (string, data) |
19290c65 | 268 | const char *string; |
570d7624 JB |
269 | Lisp_Object data; |
270 | { | |
271 | Lisp_Object errstring; | |
505ab9bc | 272 | int errorno = errno; |
d7259fdb | 273 | char *str; |
570d7624 | 274 | |
ca9c0567 | 275 | synchronize_system_messages_locale (); |
d7259fdb KH |
276 | str = strerror (errorno); |
277 | errstring = code_convert_string_norecord (make_unibyte_string (str, | |
278 | strlen (str)), | |
68c45bf0 PE |
279 | Vlocale_coding_system, 0); |
280 | ||
570d7624 | 281 | while (1) |
505ab9bc RS |
282 | switch (errorno) |
283 | { | |
284 | case EEXIST: | |
24b1ddad | 285 | xsignal (Qfile_already_exists, Fcons (errstring, data)); |
505ab9bc RS |
286 | break; |
287 | default: | |
288 | /* System error messages are capitalized. Downcase the initial | |
289 | unless it is followed by a slash. */ | |
d5db4077 | 290 | if (SREF (errstring, 1) != '/') |
942dc838 | 291 | SSET (errstring, 0, DOWNCASE (SREF (errstring, 0))); |
505ab9bc | 292 | |
24b1ddad | 293 | xsignal (Qfile_error, |
505ab9bc RS |
294 | Fcons (build_string (string), Fcons (errstring, data))); |
295 | } | |
570d7624 | 296 | } |
b5148e85 | 297 | |
b27a1703 | 298 | Lisp_Object |
b5148e85 RS |
299 | close_file_unwind (fd) |
300 | Lisp_Object fd; | |
301 | { | |
68c45bf0 | 302 | emacs_close (XFASTINT (fd)); |
b27a1703 | 303 | return Qnil; |
b5148e85 | 304 | } |
a1d2b64a RS |
305 | |
306 | /* Restore point, having saved it as a marker. */ | |
307 | ||
ec7adf26 | 308 | static Lisp_Object |
a1d2b64a | 309 | restore_point_unwind (location) |
199607e4 | 310 | Lisp_Object location; |
a1d2b64a | 311 | { |
ec7adf26 | 312 | Fgoto_char (location); |
a1d2b64a | 313 | Fset_marker (location, Qnil, Qnil); |
b27a1703 | 314 | return Qnil; |
a1d2b64a | 315 | } |
59c94f03 | 316 | |
570d7624 | 317 | \f |
0bf2eed2 | 318 | Lisp_Object Qexpand_file_name; |
273e0829 | 319 | Lisp_Object Qsubstitute_in_file_name; |
0bf2eed2 RS |
320 | Lisp_Object Qdirectory_file_name; |
321 | Lisp_Object Qfile_name_directory; | |
322 | Lisp_Object Qfile_name_nondirectory; | |
642ef245 | 323 | Lisp_Object Qunhandled_file_name_directory; |
0bf2eed2 | 324 | Lisp_Object Qfile_name_as_directory; |
32f4334d | 325 | Lisp_Object Qcopy_file; |
a6e6e718 | 326 | Lisp_Object Qmake_directory_internal; |
b272d624 | 327 | Lisp_Object Qmake_directory; |
32f4334d RS |
328 | Lisp_Object Qdelete_directory; |
329 | Lisp_Object Qdelete_file; | |
330 | Lisp_Object Qrename_file; | |
331 | Lisp_Object Qadd_name_to_file; | |
332 | Lisp_Object Qmake_symbolic_link; | |
333 | Lisp_Object Qfile_exists_p; | |
334 | Lisp_Object Qfile_executable_p; | |
335 | Lisp_Object Qfile_readable_p; | |
32f4334d | 336 | Lisp_Object Qfile_writable_p; |
1f8653eb RS |
337 | Lisp_Object Qfile_symlink_p; |
338 | Lisp_Object Qaccess_file; | |
32f4334d | 339 | Lisp_Object Qfile_directory_p; |
adedc71d | 340 | Lisp_Object Qfile_regular_p; |
32f4334d RS |
341 | Lisp_Object Qfile_accessible_directory_p; |
342 | Lisp_Object Qfile_modes; | |
343 | Lisp_Object Qset_file_modes; | |
819da85b | 344 | Lisp_Object Qset_file_times; |
32f4334d RS |
345 | Lisp_Object Qfile_newer_than_file_p; |
346 | Lisp_Object Qinsert_file_contents; | |
347 | Lisp_Object Qwrite_region; | |
348 | Lisp_Object Qverify_visited_file_modtime; | |
3ec46acd | 349 | Lisp_Object Qset_visited_file_modtime; |
32f4334d | 350 | |
49307295 | 351 | DEFUN ("find-file-name-handler", Ffind_file_name_handler, Sfind_file_name_handler, 2, 2, 0, |
8c1a1077 PJ |
352 | doc: /* Return FILENAME's handler function for OPERATION, if it has one. |
353 | Otherwise, return nil. | |
354 | A file name is handled if one of the regular expressions in | |
355 | `file-name-handler-alist' matches it. | |
356 | ||
357 | If OPERATION equals `inhibit-file-name-operation', then we ignore | |
358 | any handlers that are members of `inhibit-file-name-handlers', | |
359 | but we still do run any other handlers. This lets handlers | |
360 | use the standard functions without calling themselves recursively. */) | |
361 | (filename, operation) | |
362 | Lisp_Object filename, operation; | |
32f4334d | 363 | { |
642ef245 | 364 | /* This function must not munge the match data. */ |
204ee271 | 365 | Lisp_Object chain, inhibited_handlers, result; |
8d2ced53 | 366 | int pos = -1; |
642ef245 | 367 | |
204ee271 | 368 | result = Qnil; |
b7826503 | 369 | CHECK_STRING (filename); |
e4432095 | 370 | |
a65970a0 RS |
371 | if (EQ (operation, Vinhibit_file_name_operation)) |
372 | inhibited_handlers = Vinhibit_file_name_handlers; | |
373 | else | |
374 | inhibited_handlers = Qnil; | |
82c2d839 | 375 | |
93c30b5f | 376 | for (chain = Vfile_name_handler_alist; CONSP (chain); |
03699b14 | 377 | chain = XCDR (chain)) |
32f4334d RS |
378 | { |
379 | Lisp_Object elt; | |
03699b14 | 380 | elt = XCAR (chain); |
93c30b5f | 381 | if (CONSP (elt)) |
32f4334d | 382 | { |
f6c9b683 | 383 | Lisp_Object string = XCAR (elt); |
8d2ced53 | 384 | int match_pos; |
f6c9b683 | 385 | Lisp_Object handler = XCDR (elt); |
68780e2a RS |
386 | Lisp_Object operations = Qnil; |
387 | ||
388 | if (SYMBOLP (handler)) | |
389 | operations = Fget (handler, Qoperations); | |
f6c9b683 | 390 | |
8d2ced53 | 391 | if (STRINGP (string) |
f6c9b683 RS |
392 | && (match_pos = fast_string_match (string, filename)) > pos |
393 | && (NILP (operations) || ! NILP (Fmemq (operation, operations)))) | |
a65970a0 | 394 | { |
f6c9b683 | 395 | Lisp_Object tem; |
a65970a0 | 396 | |
03699b14 | 397 | handler = XCDR (elt); |
a65970a0 RS |
398 | tem = Fmemq (handler, inhibited_handlers); |
399 | if (NILP (tem)) | |
8d2ced53 SM |
400 | { |
401 | result = handler; | |
402 | pos = match_pos; | |
403 | } | |
a65970a0 | 404 | } |
32f4334d | 405 | } |
642ef245 JB |
406 | |
407 | QUIT; | |
32f4334d | 408 | } |
8d2ced53 | 409 | return result; |
32f4334d RS |
410 | } |
411 | \f | |
570d7624 | 412 | DEFUN ("file-name-directory", Ffile_name_directory, Sfile_name_directory, |
8c1a1077 PJ |
413 | 1, 1, 0, |
414 | doc: /* Return the directory component in file name FILENAME. | |
415 | Return nil if FILENAME does not include a directory. | |
78379264 | 416 | Otherwise return a directory name. |
8c1a1077 PJ |
417 | Given a Unix syntax file name, returns a string ending in slash; |
418 | on VMS, perhaps instead a string ending in `:', `]' or `>'. */) | |
419 | (filename) | |
3b7f6e60 | 420 | Lisp_Object filename; |
570d7624 | 421 | { |
100c44b7 | 422 | #ifndef DOS_NT |
19290c65 | 423 | register const unsigned char *beg; |
100c44b7 EZ |
424 | #else |
425 | register unsigned char *beg; | |
426 | #endif | |
19290c65 | 427 | register const unsigned char *p; |
0bf2eed2 | 428 | Lisp_Object handler; |
570d7624 | 429 | |
b7826503 | 430 | CHECK_STRING (filename); |
570d7624 | 431 | |
0bf2eed2 RS |
432 | /* If the file name has special constructs in it, |
433 | call the corresponding file handler. */ | |
3b7f6e60 | 434 | handler = Ffind_file_name_handler (filename, Qfile_name_directory); |
0bf2eed2 | 435 | if (!NILP (handler)) |
3b7f6e60 | 436 | return call2 (handler, Qfile_name_directory, filename); |
0bf2eed2 | 437 | |
3b7f6e60 | 438 | filename = FILE_SYSTEM_CASE (filename); |
d5db4077 | 439 | beg = SDATA (filename); |
199607e4 RS |
440 | #ifdef DOS_NT |
441 | beg = strcpy (alloca (strlen (beg) + 1), beg); | |
442 | #endif | |
d5db4077 | 443 | p = beg + SBYTES (filename); |
570d7624 | 444 | |
199607e4 | 445 | while (p != beg && !IS_DIRECTORY_SEP (p[-1]) |
570d7624 JB |
446 | #ifdef VMS |
447 | && p[-1] != ':' && p[-1] != ']' && p[-1] != '>' | |
448 | #endif /* VMS */ | |
199607e4 | 449 | #ifdef DOS_NT |
ba14e174 RS |
450 | /* only recognise drive specifier at the beginning */ |
451 | && !(p[-1] == ':' | |
452 | /* handle the "/:d:foo" and "/:foo" cases correctly */ | |
453 | && ((p == beg + 2 && !IS_DIRECTORY_SEP (*beg)) | |
454 | || (p == beg + 4 && IS_DIRECTORY_SEP (*beg)))) | |
199607e4 | 455 | #endif |
570d7624 JB |
456 | ) p--; |
457 | ||
458 | if (p == beg) | |
459 | return Qnil; | |
5e570b75 | 460 | #ifdef DOS_NT |
4c3c22f3 | 461 | /* Expansion of "c:" to drive and default directory. */ |
ba14e174 | 462 | if (p[-1] == ':') |
4c3c22f3 | 463 | { |
4c3c22f3 | 464 | /* MAXPATHLEN+1 is guaranteed to be enough space for getdefdir. */ |
199607e4 | 465 | unsigned char *res = alloca (MAXPATHLEN + 1); |
ba14e174 RS |
466 | unsigned char *r = res; |
467 | ||
468 | if (p == beg + 4 && IS_DIRECTORY_SEP (*beg) && beg[1] == ':') | |
469 | { | |
470 | strncpy (res, beg, 2); | |
471 | beg += 2; | |
472 | r += 2; | |
473 | } | |
474 | ||
475 | if (getdefdir (toupper (*beg) - 'A' + 1, r)) | |
4c3c22f3 | 476 | { |
199607e4 | 477 | if (!IS_DIRECTORY_SEP (res[strlen (res) - 1])) |
4c3c22f3 RS |
478 | strcat (res, "/"); |
479 | beg = res; | |
480 | p = beg + strlen (beg); | |
481 | } | |
482 | } | |
199607e4 | 483 | CORRECT_DIR_SEPS (beg); |
5e570b75 | 484 | #endif /* DOS_NT */ |
60d67b83 | 485 | |
d7231f93 | 486 | return make_specified_string (beg, -1, p - beg, STRING_MULTIBYTE (filename)); |
570d7624 JB |
487 | } |
488 | ||
60d67b83 RS |
489 | DEFUN ("file-name-nondirectory", Ffile_name_nondirectory, |
490 | Sfile_name_nondirectory, 1, 1, 0, | |
8c1a1077 PJ |
491 | doc: /* Return file name FILENAME sans its directory. |
492 | For example, in a Unix-syntax file name, | |
493 | this is everything after the last slash, | |
494 | or the entire name if it contains no slash. */) | |
495 | (filename) | |
3b7f6e60 | 496 | Lisp_Object filename; |
570d7624 | 497 | { |
19290c65 | 498 | register const unsigned char *beg, *p, *end; |
0bf2eed2 | 499 | Lisp_Object handler; |
570d7624 | 500 | |
b7826503 | 501 | CHECK_STRING (filename); |
570d7624 | 502 | |
0bf2eed2 RS |
503 | /* If the file name has special constructs in it, |
504 | call the corresponding file handler. */ | |
3b7f6e60 | 505 | handler = Ffind_file_name_handler (filename, Qfile_name_nondirectory); |
0bf2eed2 | 506 | if (!NILP (handler)) |
3b7f6e60 | 507 | return call2 (handler, Qfile_name_nondirectory, filename); |
0bf2eed2 | 508 | |
d5db4077 KR |
509 | beg = SDATA (filename); |
510 | end = p = beg + SBYTES (filename); | |
570d7624 | 511 | |
199607e4 | 512 | while (p != beg && !IS_DIRECTORY_SEP (p[-1]) |
570d7624 JB |
513 | #ifdef VMS |
514 | && p[-1] != ':' && p[-1] != ']' && p[-1] != '>' | |
515 | #endif /* VMS */ | |
199607e4 RS |
516 | #ifdef DOS_NT |
517 | /* only recognise drive specifier at beginning */ | |
ba14e174 RS |
518 | && !(p[-1] == ':' |
519 | /* handle the "/:d:foo" case correctly */ | |
520 | && (p == beg + 2 || (p == beg + 4 && IS_DIRECTORY_SEP (*beg)))) | |
199607e4 | 521 | #endif |
60d67b83 RS |
522 | ) |
523 | p--; | |
570d7624 | 524 | |
d7231f93 | 525 | return make_specified_string (p, -1, end - p, STRING_MULTIBYTE (filename)); |
570d7624 | 526 | } |
642ef245 | 527 | |
60d67b83 RS |
528 | DEFUN ("unhandled-file-name-directory", Funhandled_file_name_directory, |
529 | Sunhandled_file_name_directory, 1, 1, 0, | |
8c1a1077 PJ |
530 | doc: /* Return a directly usable directory name somehow associated with FILENAME. |
531 | A `directly usable' directory name is one that may be used without the | |
532 | intervention of any file handler. | |
533 | If FILENAME is a directly usable file itself, return | |
534 | \(file-name-directory FILENAME). | |
ca319910 SM |
535 | If FILENAME refers to a file which is not accessible from a local process, |
536 | then this should return nil. | |
8c1a1077 PJ |
537 | The `call-process' and `start-process' functions use this function to |
538 | get a current directory to run processes in. */) | |
539 | (filename) | |
540 | Lisp_Object filename; | |
642ef245 JB |
541 | { |
542 | Lisp_Object handler; | |
543 | ||
544 | /* If the file name has special constructs in it, | |
545 | call the corresponding file handler. */ | |
49307295 | 546 | handler = Ffind_file_name_handler (filename, Qunhandled_file_name_directory); |
642ef245 JB |
547 | if (!NILP (handler)) |
548 | return call2 (handler, Qunhandled_file_name_directory, filename); | |
549 | ||
550 | return Ffile_name_directory (filename); | |
551 | } | |
552 | ||
570d7624 JB |
553 | \f |
554 | char * | |
555 | file_name_as_directory (out, in) | |
556 | char *out, *in; | |
557 | { | |
558 | int size = strlen (in) - 1; | |
559 | ||
560 | strcpy (out, in); | |
561 | ||
8aa3a244 RS |
562 | if (size < 0) |
563 | { | |
154a307d KH |
564 | out[0] = '.'; |
565 | out[1] = '/'; | |
566 | out[2] = 0; | |
8aa3a244 RS |
567 | return out; |
568 | } | |
569 | ||
570d7624 JB |
570 | #ifdef VMS |
571 | /* Is it already a directory string? */ | |
572 | if (in[size] == ':' || in[size] == ']' || in[size] == '>') | |
573 | return out; | |
574 | /* Is it a VMS directory file name? If so, hack VMS syntax. */ | |
575 | else if (! index (in, '/') | |
576 | && ((size > 3 && ! strcmp (&in[size - 3], ".DIR")) | |
577 | || (size > 3 && ! strcmp (&in[size - 3], ".dir")) | |
578 | || (size > 5 && (! strncmp (&in[size - 5], ".DIR", 4) | |
579 | || ! strncmp (&in[size - 5], ".dir", 4)) | |
580 | && (in[size - 1] == '.' || in[size - 1] == ';') | |
581 | && in[size] == '1'))) | |
582 | { | |
583 | register char *p, *dot; | |
584 | char brack; | |
585 | ||
586 | /* x.dir -> [.x] | |
587 | dir:x.dir --> dir:[x] | |
588 | dir:[x]y.dir --> dir:[x.y] */ | |
589 | p = in + size; | |
590 | while (p != in && *p != ':' && *p != '>' && *p != ']') p--; | |
591 | if (p != in) | |
592 | { | |
593 | strncpy (out, in, p - in); | |
594 | out[p - in] = '\0'; | |
595 | if (*p == ':') | |
596 | { | |
597 | brack = ']'; | |
598 | strcat (out, ":["); | |
599 | } | |
600 | else | |
601 | { | |
602 | brack = *p; | |
603 | strcat (out, "."); | |
604 | } | |
605 | p++; | |
606 | } | |
607 | else | |
608 | { | |
609 | brack = ']'; | |
610 | strcpy (out, "[."); | |
611 | } | |
bfb61299 JB |
612 | dot = index (p, '.'); |
613 | if (dot) | |
570d7624 JB |
614 | { |
615 | /* blindly remove any extension */ | |
616 | size = strlen (out) + (dot - p); | |
617 | strncat (out, p, dot - p); | |
618 | } | |
619 | else | |
620 | { | |
621 | strcat (out, p); | |
622 | size = strlen (out); | |
623 | } | |
624 | out[size++] = brack; | |
625 | out[size] = '\0'; | |
626 | } | |
627 | #else /* not VMS */ | |
628 | /* For Unix syntax, Append a slash if necessary */ | |
199607e4 | 629 | if (!IS_DIRECTORY_SEP (out[size])) |
5e570b75 | 630 | { |
8cfd6446 JB |
631 | /* Cannot use DIRECTORY_SEP, which could have any value */ |
632 | out[size + 1] = '/'; | |
5e570b75 RS |
633 | out[size + 2] = '\0'; |
634 | } | |
199607e4 RS |
635 | #ifdef DOS_NT |
636 | CORRECT_DIR_SEPS (out); | |
637 | #endif | |
570d7624 JB |
638 | #endif /* not VMS */ |
639 | return out; | |
640 | } | |
641 | ||
642 | DEFUN ("file-name-as-directory", Ffile_name_as_directory, | |
643 | Sfile_name_as_directory, 1, 1, 0, | |
0dac4f85 | 644 | doc: /* Return a string representing the file name FILE interpreted as a directory. |
8c1a1077 PJ |
645 | This operation exists because a directory is also a file, but its name as |
646 | a directory is different from its name as a file. | |
647 | The result can be used as the value of `default-directory' | |
648 | or passed as second argument to `expand-file-name'. | |
649 | For a Unix-syntax file name, just appends a slash. | |
650 | On VMS, converts \"[X]FOO.DIR\" to \"[X.FOO]\", etc. */) | |
651 | (file) | |
570d7624 JB |
652 | Lisp_Object file; |
653 | { | |
654 | char *buf; | |
0bf2eed2 | 655 | Lisp_Object handler; |
570d7624 | 656 | |
b7826503 | 657 | CHECK_STRING (file); |
265a9e55 | 658 | if (NILP (file)) |
570d7624 | 659 | return Qnil; |
0bf2eed2 RS |
660 | |
661 | /* If the file name has special constructs in it, | |
662 | call the corresponding file handler. */ | |
49307295 | 663 | handler = Ffind_file_name_handler (file, Qfile_name_as_directory); |
0bf2eed2 RS |
664 | if (!NILP (handler)) |
665 | return call2 (handler, Qfile_name_as_directory, file); | |
666 | ||
d5db4077 | 667 | buf = (char *) alloca (SBYTES (file) + 10); |
d7231f93 KH |
668 | file_name_as_directory (buf, SDATA (file)); |
669 | return make_specified_string (buf, -1, strlen (buf), | |
670 | STRING_MULTIBYTE (file)); | |
570d7624 JB |
671 | } |
672 | \f | |
673 | /* | |
674 | * Convert from directory name to filename. | |
675 | * On VMS: | |
676 | * xyzzy:[mukesh.emacs] => xyzzy:[mukesh]emacs.dir.1 | |
677 | * xyzzy:[mukesh] => xyzzy:[000000]mukesh.dir.1 | |
199607e4 | 678 | * On UNIX, it's simple: just make sure there isn't a terminating / |
570d7624 JB |
679 | |
680 | * Value is nonzero if the string output is different from the input. | |
681 | */ | |
682 | ||
dfcf069d | 683 | int |
570d7624 JB |
684 | directory_file_name (src, dst) |
685 | char *src, *dst; | |
686 | { | |
687 | long slen; | |
688 | #ifdef VMS | |
689 | long rlen; | |
690 | char * ptr, * rptr; | |
691 | char bracket; | |
692 | struct FAB fab = cc$rms_fab; | |
693 | struct NAM nam = cc$rms_nam; | |
694 | char esa[NAM$C_MAXRSS]; | |
695 | #endif /* VMS */ | |
696 | ||
697 | slen = strlen (src); | |
698 | #ifdef VMS | |
699 | if (! index (src, '/') | |
700 | && (src[slen - 1] == ']' | |
701 | || src[slen - 1] == ':' | |
702 | || src[slen - 1] == '>')) | |
703 | { | |
704 | /* VMS style - convert [x.y.z] to [x.y]z, [x] to [000000]x */ | |
705 | fab.fab$l_fna = src; | |
706 | fab.fab$b_fns = slen; | |
707 | fab.fab$l_nam = &nam; | |
708 | fab.fab$l_fop = FAB$M_NAM; | |
709 | ||
710 | nam.nam$l_esa = esa; | |
711 | nam.nam$b_ess = sizeof esa; | |
712 | nam.nam$b_nop |= NAM$M_SYNCHK; | |
713 | ||
714 | /* We call SYS$PARSE to handle such things as [--] for us. */ | |
199607e4 | 715 | if (SYS$PARSE (&fab, 0, 0) == RMS$_NORMAL) |
570d7624 JB |
716 | { |
717 | slen = nam.nam$b_esl; | |
718 | if (esa[slen - 1] == ';' && esa[slen - 2] == '.') | |
719 | slen -= 2; | |
720 | esa[slen] = '\0'; | |
721 | src = esa; | |
722 | } | |
723 | if (src[slen - 1] != ']' && src[slen - 1] != '>') | |
724 | { | |
725 | /* what about when we have logical_name:???? */ | |
726 | if (src[slen - 1] == ':') | |
5e570b75 | 727 | { /* Xlate logical name and see what we get */ |
570d7624 JB |
728 | ptr = strcpy (dst, src); /* upper case for getenv */ |
729 | while (*ptr) | |
730 | { | |
731 | if ('a' <= *ptr && *ptr <= 'z') | |
732 | *ptr -= 040; | |
733 | ptr++; | |
734 | } | |
5e570b75 | 735 | dst[slen - 1] = 0; /* remove colon */ |
570d7624 JB |
736 | if (!(src = egetenv (dst))) |
737 | return 0; | |
738 | /* should we jump to the beginning of this procedure? | |
739 | Good points: allows us to use logical names that xlate | |
740 | to Unix names, | |
741 | Bad points: can be a problem if we just translated to a device | |
742 | name... | |
743 | For now, I'll punt and always expect VMS names, and hope for | |
744 | the best! */ | |
745 | slen = strlen (src); | |
746 | if (src[slen - 1] != ']' && src[slen - 1] != '>') | |
747 | { /* no recursion here! */ | |
748 | strcpy (dst, src); | |
749 | return 0; | |
750 | } | |
751 | } | |
752 | else | |
5e570b75 | 753 | { /* not a directory spec */ |
570d7624 JB |
754 | strcpy (dst, src); |
755 | return 0; | |
756 | } | |
757 | } | |
758 | bracket = src[slen - 1]; | |
759 | ||
760 | /* If bracket is ']' or '>', bracket - 2 is the corresponding | |
761 | opening bracket. */ | |
bfb61299 JB |
762 | ptr = index (src, bracket - 2); |
763 | if (ptr == 0) | |
570d7624 JB |
764 | { /* no opening bracket */ |
765 | strcpy (dst, src); | |
766 | return 0; | |
767 | } | |
768 | if (!(rptr = rindex (src, '.'))) | |
769 | rptr = ptr; | |
770 | slen = rptr - src; | |
771 | strncpy (dst, src, slen); | |
772 | dst[slen] = '\0'; | |
773 | if (*rptr == '.') | |
774 | { | |
775 | dst[slen++] = bracket; | |
776 | dst[slen] = '\0'; | |
777 | } | |
778 | else | |
779 | { | |
780 | /* If we have the top-level of a rooted directory (i.e. xx:[000000]), | |
781 | then translate the device and recurse. */ | |
782 | if (dst[slen - 1] == ':' | |
5e570b75 | 783 | && dst[slen - 2] != ':' /* skip decnet nodes */ |
199607e4 | 784 | && strcmp (src + slen, "[000000]") == 0) |
570d7624 JB |
785 | { |
786 | dst[slen - 1] = '\0'; | |
787 | if ((ptr = egetenv (dst)) | |
788 | && (rlen = strlen (ptr) - 1) > 0 | |
789 | && (ptr[rlen] == ']' || ptr[rlen] == '>') | |
790 | && ptr[rlen - 1] == '.') | |
791 | { | |
72b21817 RS |
792 | char * buf = (char *) alloca (strlen (ptr) + 1); |
793 | strcpy (buf, ptr); | |
794 | buf[rlen - 1] = ']'; | |
795 | buf[rlen] = '\0'; | |
796 | return directory_file_name (buf, dst); | |
570d7624 JB |
797 | } |
798 | else | |
799 | dst[slen - 1] = ':'; | |
800 | } | |
801 | strcat (dst, "[000000]"); | |
802 | slen += 8; | |
803 | } | |
804 | rptr++; | |
805 | rlen = strlen (rptr) - 1; | |
806 | strncat (dst, rptr, rlen); | |
807 | dst[slen + rlen] = '\0'; | |
808 | strcat (dst, ".DIR.1"); | |
809 | return 1; | |
810 | } | |
811 | #endif /* VMS */ | |
812 | /* Process as Unix format: just remove any final slash. | |
813 | But leave "/" unchanged; do not change it to "". */ | |
814 | strcpy (dst, src); | |
199607e4 | 815 | if (slen > 1 |
5e570b75 | 816 | && IS_DIRECTORY_SEP (dst[slen - 1]) |
4592782e RS |
817 | #ifdef DOS_NT |
818 | && !IS_ANY_SEP (dst[slen - 2]) | |
819 | #endif | |
820 | ) | |
570d7624 | 821 | dst[slen - 1] = 0; |
199607e4 RS |
822 | #ifdef DOS_NT |
823 | CORRECT_DIR_SEPS (dst); | |
125feee8 | 824 | #endif |
570d7624 JB |
825 | return 1; |
826 | } | |
827 | ||
828 | DEFUN ("directory-file-name", Fdirectory_file_name, Sdirectory_file_name, | |
8c1a1077 PJ |
829 | 1, 1, 0, |
830 | doc: /* Returns the file name of the directory named DIRECTORY. | |
831 | This is the name of the file that holds the data for the directory DIRECTORY. | |
832 | This operation exists because a directory is also a file, but its name as | |
833 | a directory is different from its name as a file. | |
834 | In Unix-syntax, this function just removes the final slash. | |
835 | On VMS, given a VMS-syntax directory name such as \"[X.Y]\", | |
836 | it returns a file name such as \"[X]Y.DIR.1\". */) | |
837 | (directory) | |
570d7624 JB |
838 | Lisp_Object directory; |
839 | { | |
840 | char *buf; | |
0bf2eed2 | 841 | Lisp_Object handler; |
570d7624 | 842 | |
b7826503 | 843 | CHECK_STRING (directory); |
570d7624 | 844 | |
265a9e55 | 845 | if (NILP (directory)) |
570d7624 | 846 | return Qnil; |
0bf2eed2 RS |
847 | |
848 | /* If the file name has special constructs in it, | |
849 | call the corresponding file handler. */ | |
49307295 | 850 | handler = Ffind_file_name_handler (directory, Qdirectory_file_name); |
0bf2eed2 RS |
851 | if (!NILP (handler)) |
852 | return call2 (handler, Qdirectory_file_name, directory); | |
853 | ||
570d7624 JB |
854 | #ifdef VMS |
855 | /* 20 extra chars is insufficient for VMS, since we might perform a | |
856 | logical name translation. an equivalence string can be up to 255 | |
857 | chars long, so grab that much extra space... - sss */ | |
d5db4077 | 858 | buf = (char *) alloca (SBYTES (directory) + 20 + 255); |
570d7624 | 859 | #else |
d5db4077 | 860 | buf = (char *) alloca (SBYTES (directory) + 20); |
570d7624 | 861 | #endif |
d5db4077 | 862 | directory_file_name (SDATA (directory), buf); |
d7231f93 KH |
863 | return make_specified_string (buf, -1, strlen (buf), |
864 | STRING_MULTIBYTE (directory)); | |
570d7624 JB |
865 | } |
866 | ||
3ce839e4 RS |
867 | static char make_temp_name_tbl[64] = |
868 | { | |
869 | 'A','B','C','D','E','F','G','H', | |
870 | 'I','J','K','L','M','N','O','P', | |
871 | 'Q','R','S','T','U','V','W','X', | |
872 | 'Y','Z','a','b','c','d','e','f', | |
873 | 'g','h','i','j','k','l','m','n', | |
874 | 'o','p','q','r','s','t','u','v', | |
875 | 'w','x','y','z','0','1','2','3', | |
876 | '4','5','6','7','8','9','-','_' | |
877 | }; | |
cb613bb8 | 878 | |
3ce839e4 RS |
879 | static unsigned make_temp_name_count, make_temp_name_count_initialized_p; |
880 | ||
cb613bb8 | 881 | /* Value is a temporary file name starting with PREFIX, a string. |
efdc16c9 | 882 | |
cb613bb8 GM |
883 | The Emacs process number forms part of the result, so there is |
884 | no danger of generating a name being used by another process. | |
885 | In addition, this function makes an attempt to choose a name | |
886 | which has no existing file. To make this work, PREFIX should be | |
887 | an absolute file name. | |
efdc16c9 | 888 | |
cb613bb8 GM |
889 | BASE64_P non-zero means add the pid as 3 characters in base64 |
890 | encoding. In this case, 6 characters will be added to PREFIX to | |
891 | form the file name. Otherwise, if Emacs is running on a system | |
892 | with long file names, add the pid as a decimal number. | |
893 | ||
894 | This function signals an error if no unique file name could be | |
895 | generated. */ | |
896 | ||
897 | Lisp_Object | |
898 | make_temp_name (prefix, base64_p) | |
570d7624 | 899 | Lisp_Object prefix; |
cb613bb8 | 900 | int base64_p; |
570d7624 JB |
901 | { |
902 | Lisp_Object val; | |
0cedd530 | 903 | int len, clen; |
3ce839e4 RS |
904 | int pid; |
905 | unsigned char *p, *data; | |
906 | char pidbuf[20]; | |
907 | int pidlen; | |
efdc16c9 | 908 | |
b7826503 | 909 | CHECK_STRING (prefix); |
3ce839e4 RS |
910 | |
911 | /* VAL is created by adding 6 characters to PREFIX. The first | |
912 | three are the PID of this process, in base 64, and the second | |
913 | three are incremented if the file already exists. This ensures | |
914 | 262144 unique file names per PID per PREFIX. */ | |
915 | ||
916 | pid = (int) getpid (); | |
917 | ||
cb613bb8 GM |
918 | if (base64_p) |
919 | { | |
920 | pidbuf[0] = make_temp_name_tbl[pid & 63], pid >>= 6; | |
921 | pidbuf[1] = make_temp_name_tbl[pid & 63], pid >>= 6; | |
922 | pidbuf[2] = make_temp_name_tbl[pid & 63], pid >>= 6; | |
923 | pidlen = 3; | |
924 | } | |
925 | else | |
926 | { | |
3ce839e4 | 927 | #ifdef HAVE_LONG_FILE_NAMES |
cb613bb8 GM |
928 | sprintf (pidbuf, "%d", pid); |
929 | pidlen = strlen (pidbuf); | |
3a3bfb18 | 930 | #else |
cb613bb8 GM |
931 | pidbuf[0] = make_temp_name_tbl[pid & 63], pid >>= 6; |
932 | pidbuf[1] = make_temp_name_tbl[pid & 63], pid >>= 6; | |
933 | pidbuf[2] = make_temp_name_tbl[pid & 63], pid >>= 6; | |
934 | pidlen = 3; | |
3ce839e4 | 935 | #endif |
cb613bb8 | 936 | } |
efdc16c9 | 937 | |
0cedd530 SM |
938 | len = SBYTES (prefix); clen = SCHARS (prefix); |
939 | val = make_uninit_multibyte_string (clen + 3 + pidlen, len + 3 + pidlen); | |
940 | if (!STRING_MULTIBYTE (prefix)) | |
941 | STRING_SET_UNIBYTE (val); | |
d5db4077 KR |
942 | data = SDATA (val); |
943 | bcopy(SDATA (prefix), data, len); | |
3ce839e4 RS |
944 | p = data + len; |
945 | ||
946 | bcopy (pidbuf, p, pidlen); | |
947 | p += pidlen; | |
948 | ||
949 | /* Here we try to minimize useless stat'ing when this function is | |
950 | invoked many times successively with the same PREFIX. We achieve | |
951 | this by initializing count to a random value, and incrementing it | |
f6a492a9 RS |
952 | afterwards. |
953 | ||
954 | We don't want make-temp-name to be called while dumping, | |
955 | because then make_temp_name_count_initialized_p would get set | |
956 | and then make_temp_name_count would not be set when Emacs starts. */ | |
957 | ||
3ce839e4 RS |
958 | if (!make_temp_name_count_initialized_p) |
959 | { | |
960 | make_temp_name_count = (unsigned) time (NULL); | |
961 | make_temp_name_count_initialized_p = 1; | |
962 | } | |
963 | ||
964 | while (1) | |
965 | { | |
966 | struct stat ignored; | |
8a7777fc | 967 | unsigned num = make_temp_name_count; |
3ce839e4 RS |
968 | |
969 | p[0] = make_temp_name_tbl[num & 63], num >>= 6; | |
970 | p[1] = make_temp_name_tbl[num & 63], num >>= 6; | |
971 | p[2] = make_temp_name_tbl[num & 63], num >>= 6; | |
972 | ||
8a7777fc RS |
973 | /* Poor man's congruential RN generator. Replace with |
974 | ++make_temp_name_count for debugging. */ | |
975 | make_temp_name_count += 25229; | |
976 | make_temp_name_count %= 225307; | |
977 | ||
3ce839e4 RS |
978 | if (stat (data, &ignored) < 0) |
979 | { | |
980 | /* We want to return only if errno is ENOENT. */ | |
981 | if (errno == ENOENT) | |
982 | return val; | |
983 | else | |
984 | /* The error here is dubious, but there is little else we | |
985 | can do. The alternatives are to return nil, which is | |
986 | as bad as (and in many cases worse than) throwing the | |
987 | error, or to ignore the error, which will likely result | |
8a7777fc RS |
988 | in looping through 225307 stat's, which is not only |
989 | dog-slow, but also useless since it will fallback to | |
990 | the errow below, anyway. */ | |
9869bb0b | 991 | report_file_error ("Cannot create temporary name for prefix", |
3ce839e4 RS |
992 | Fcons (prefix, Qnil)); |
993 | /* not reached */ | |
994 | } | |
995 | } | |
996 | ||
997 | error ("Cannot create temporary name for prefix `%s'", | |
d5db4077 | 998 | SDATA (prefix)); |
3ce839e4 | 999 | return Qnil; |
570d7624 | 1000 | } |
3ce839e4 | 1001 | |
cb613bb8 GM |
1002 | |
1003 | DEFUN ("make-temp-name", Fmake_temp_name, Smake_temp_name, 1, 1, 0, | |
8c1a1077 PJ |
1004 | doc: /* Generate temporary file name (string) starting with PREFIX (a string). |
1005 | The Emacs process number forms part of the result, | |
1006 | so there is no danger of generating a name being used by another process. | |
1007 | ||
1008 | In addition, this function makes an attempt to choose a name | |
1009 | which has no existing file. To make this work, | |
1010 | PREFIX should be an absolute file name. | |
1011 | ||
1012 | There is a race condition between calling `make-temp-name' and creating the | |
1013 | file which opens all kinds of security holes. For that reason, you should | |
f9e6f049 RS |
1014 | probably use `make-temp-file' instead, except in three circumstances: |
1015 | ||
1016 | * If you are creating the file in the user's home directory. | |
1017 | * If you are creating a directory rather than an ordinary file. | |
1018 | * If you are taking special precautions as `make-temp-file' does. */) | |
8c1a1077 | 1019 | (prefix) |
cb613bb8 GM |
1020 | Lisp_Object prefix; |
1021 | { | |
1022 | return make_temp_name (prefix, 0); | |
1023 | } | |
1024 | ||
1025 | ||
570d7624 JB |
1026 | \f |
1027 | DEFUN ("expand-file-name", Fexpand_file_name, Sexpand_file_name, 1, 2, 0, | |
8c1a1077 PJ |
1028 | doc: /* Convert filename NAME to absolute, and canonicalize it. |
1029 | Second arg DEFAULT-DIRECTORY is directory to start with if NAME is relative | |
78379264 | 1030 | \(does not start with slash or tilde); if DEFAULT-DIRECTORY is nil or missing, |
a4e03fe5 | 1031 | the current buffer's value of `default-directory' is used. |
8c1a1077 PJ |
1032 | File name components that are `.' are removed, and |
1033 | so are file name components followed by `..', along with the `..' itself; | |
1034 | note that these simplifications are done without checking the resulting | |
1035 | file names in the file system. | |
1036 | An initial `~/' expands to your home directory. | |
1037 | An initial `~USER/' expands to USER's home directory. | |
1038 | See also the function `substitute-in-file-name'. */) | |
1039 | (name, default_directory) | |
3b7f6e60 | 1040 | Lisp_Object name, default_directory; |
570d7624 JB |
1041 | { |
1042 | unsigned char *nm; | |
199607e4 | 1043 | |
570d7624 JB |
1044 | register unsigned char *newdir, *p, *o; |
1045 | int tlen; | |
1046 | unsigned char *target; | |
1047 | struct passwd *pw; | |
570d7624 JB |
1048 | #ifdef VMS |
1049 | unsigned char * colon = 0; | |
1050 | unsigned char * close = 0; | |
1051 | unsigned char * slash = 0; | |
1052 | unsigned char * brack = 0; | |
1053 | int lbrack = 0, rbrack = 0; | |
1054 | int dots = 0; | |
1055 | #endif /* VMS */ | |
5e570b75 | 1056 | #ifdef DOS_NT |
199607e4 | 1057 | int drive = 0; |
9a1dc3be | 1058 | int collapse_newdir = 1; |
f0f95d31 | 1059 | int is_escaped = 0; |
5e570b75 | 1060 | #endif /* DOS_NT */ |
199607e4 | 1061 | int length; |
beb402de | 1062 | Lisp_Object handler, result; |
2b046a72 | 1063 | int multibyte; |
199607e4 | 1064 | |
b7826503 | 1065 | CHECK_STRING (name); |
570d7624 | 1066 | |
0bf2eed2 RS |
1067 | /* If the file name has special constructs in it, |
1068 | call the corresponding file handler. */ | |
49307295 | 1069 | handler = Ffind_file_name_handler (name, Qexpand_file_name); |
0bf2eed2 | 1070 | if (!NILP (handler)) |
3b7f6e60 | 1071 | return call3 (handler, Qexpand_file_name, name, default_directory); |
58fc9587 | 1072 | |
3b7f6e60 EN |
1073 | /* Use the buffer's default-directory if DEFAULT_DIRECTORY is omitted. */ |
1074 | if (NILP (default_directory)) | |
1075 | default_directory = current_buffer->directory; | |
82330e7f | 1076 | if (! STRINGP (default_directory)) |
dd693537 EZ |
1077 | { |
1078 | #ifdef DOS_NT | |
1079 | /* "/" is not considered a root directory on DOS_NT, so using "/" | |
1080 | here causes an infinite recursion in, e.g., the following: | |
1081 | ||
1082 | (let (default-directory) | |
1083 | (expand-file-name "a")) | |
1084 | ||
1085 | To avoid this, we set default_directory to the root of the | |
1086 | current drive. */ | |
1087 | extern char *emacs_root_dir (void); | |
1088 | ||
1089 | default_directory = build_string (emacs_root_dir ()); | |
1090 | #else | |
1091 | default_directory = build_string ("/"); | |
1092 | #endif | |
1093 | } | |
58fc9587 | 1094 | |
3b7f6e60 | 1095 | if (!NILP (default_directory)) |
273e0829 | 1096 | { |
3b7f6e60 | 1097 | handler = Ffind_file_name_handler (default_directory, Qexpand_file_name); |
273e0829 | 1098 | if (!NILP (handler)) |
3b7f6e60 | 1099 | return call3 (handler, Qexpand_file_name, name, default_directory); |
273e0829 | 1100 | } |
0bf2eed2 | 1101 | |
d5db4077 | 1102 | o = SDATA (default_directory); |
5e570b75 | 1103 | |
3b7f6e60 | 1104 | /* Make sure DEFAULT_DIRECTORY is properly expanded. |
f14b1c68 | 1105 | It would be better to do this down below where we actually use |
3b7f6e60 | 1106 | default_directory. Unfortunately, calling Fexpand_file_name recursively |
f14b1c68 JB |
1107 | could invoke GC, and the strings might be relocated. This would |
1108 | be annoying because we have pointers into strings lying around | |
1109 | that would need adjusting, and people would add new pointers to | |
1110 | the code and forget to adjust them, resulting in intermittent bugs. | |
4ad827c5 RS |
1111 | Putting this call here avoids all that crud. |
1112 | ||
1113 | The EQ test avoids infinite recursion. */ | |
3b7f6e60 | 1114 | if (! NILP (default_directory) && !EQ (default_directory, name) |
199607e4 RS |
1115 | /* Save time in some common cases - as long as default_directory |
1116 | is not relative, it can be canonicalized with name below (if it | |
1117 | is needed at all) without requiring it to be expanded now. */ | |
01937013 | 1118 | #ifdef DOS_NT |
199607e4 | 1119 | /* Detect MSDOS file names with drive specifiers. */ |
f0f95d31 | 1120 | && ! (IS_DRIVE (o[0]) && IS_DEVICE_SEP (o[1]) && IS_DIRECTORY_SEP (o[2])) |
199607e4 RS |
1121 | #ifdef WINDOWSNT |
1122 | /* Detect Windows file names in UNC format. */ | |
1123 | && ! (IS_DIRECTORY_SEP (o[0]) && IS_DIRECTORY_SEP (o[1])) | |
01937013 | 1124 | #endif |
199607e4 RS |
1125 | #else /* not DOS_NT */ |
1126 | /* Detect Unix absolute file names (/... alone is not absolute on | |
1127 | DOS or Windows). */ | |
1128 | && ! (IS_DIRECTORY_SEP (o[0])) | |
1129 | #endif /* not DOS_NT */ | |
1130 | ) | |
f14b1c68 JB |
1131 | { |
1132 | struct gcpro gcpro1; | |
1133 | ||
1134 | GCPRO1 (name); | |
3b7f6e60 | 1135 | default_directory = Fexpand_file_name (default_directory, Qnil); |
f14b1c68 JB |
1136 | UNGCPRO; |
1137 | } | |
1138 | ||
4c3c22f3 | 1139 | name = FILE_SYSTEM_CASE (name); |
2b046a72 | 1140 | multibyte = STRING_MULTIBYTE (name); |
6d060996 KH |
1141 | if (multibyte != STRING_MULTIBYTE (default_directory)) |
1142 | { | |
1143 | if (multibyte) | |
1144 | default_directory = string_to_multibyte (default_directory); | |
1145 | else | |
1146 | { | |
1147 | name = string_to_multibyte (name); | |
1148 | multibyte = 1; | |
1149 | } | |
1150 | } | |
1151 | ||
1152 | nm = SDATA (name); | |
a5a1cc06 | 1153 | |
5e570b75 | 1154 | #ifdef DOS_NT |
199607e4 RS |
1155 | /* We will force directory separators to be either all \ or /, so make |
1156 | a local copy to modify, even if there ends up being no change. */ | |
1157 | nm = strcpy (alloca (strlen (nm) + 1), nm); | |
1158 | ||
f0f95d31 RS |
1159 | /* Note if special escape prefix is present, but remove for now. */ |
1160 | if (nm[0] == '/' && nm[1] == ':') | |
1161 | { | |
1162 | is_escaped = 1; | |
1163 | nm += 2; | |
1164 | } | |
1165 | ||
199607e4 | 1166 | /* Find and remove drive specifier if present; this makes nm absolute |
f0f95d31 RS |
1167 | even if the rest of the name appears to be relative. Only look for |
1168 | drive specifier at the beginning. */ | |
1169 | if (IS_DRIVE (nm[0]) && IS_DEVICE_SEP (nm[1])) | |
1170 | { | |
1171 | drive = nm[0]; | |
1172 | nm += 2; | |
1173 | } | |
bb1ff1f4 GV |
1174 | |
1175 | #ifdef WINDOWSNT | |
1176 | /* If we see "c://somedir", we want to strip the first slash after the | |
1177 | colon when stripping the drive letter. Otherwise, this expands to | |
1178 | "//somedir". */ | |
1179 | if (drive && IS_DIRECTORY_SEP (nm[0]) && IS_DIRECTORY_SEP (nm[1])) | |
1180 | nm++; | |
1181 | #endif /* WINDOWSNT */ | |
5e570b75 | 1182 | #endif /* DOS_NT */ |
4c3c22f3 | 1183 | |
199607e4 RS |
1184 | #ifdef WINDOWSNT |
1185 | /* Discard any previous drive specifier if nm is now in UNC format. */ | |
1186 | if (IS_DIRECTORY_SEP (nm[0]) && IS_DIRECTORY_SEP (nm[1])) | |
1187 | { | |
1188 | drive = 0; | |
1189 | } | |
1190 | #endif | |
1191 | ||
214378ec GM |
1192 | /* If nm is absolute, look for `/./' or `/../' or `//''sequences; if |
1193 | none are found, we can probably return right away. We will avoid | |
1194 | allocating a new string if name is already fully expanded. */ | |
570d7624 | 1195 | if ( |
5e570b75 | 1196 | IS_DIRECTORY_SEP (nm[0]) |
199607e4 | 1197 | #ifdef MSDOS |
f0f95d31 | 1198 | && drive && !is_escaped |
199607e4 RS |
1199 | #endif |
1200 | #ifdef WINDOWSNT | |
f0f95d31 | 1201 | && (drive || IS_DIRECTORY_SEP (nm[1])) && !is_escaped |
199607e4 | 1202 | #endif |
570d7624 JB |
1203 | #ifdef VMS |
1204 | || index (nm, ':') | |
1205 | #endif /* VMS */ | |
1206 | ) | |
1207 | { | |
f14b1c68 JB |
1208 | /* If it turns out that the filename we want to return is just a |
1209 | suffix of FILENAME, we don't need to go through and edit | |
1210 | things; we just need to construct a new string using data | |
1211 | starting at the middle of FILENAME. If we set lose to a | |
1212 | non-zero value, that means we've discovered that we can't do | |
1213 | that cool trick. */ | |
1214 | int lose = 0; | |
1215 | ||
570d7624 | 1216 | p = nm; |
570d7624 JB |
1217 | while (*p) |
1218 | { | |
199607e4 | 1219 | /* Since we know the name is absolute, we can assume that each |
c77d647e JB |
1220 | element starts with a "/". */ |
1221 | ||
c77d647e | 1222 | /* "." and ".." are hairy. */ |
5e570b75 | 1223 | if (IS_DIRECTORY_SEP (p[0]) |
c77d647e | 1224 | && p[1] == '.' |
5e570b75 | 1225 | && (IS_DIRECTORY_SEP (p[2]) |
c77d647e | 1226 | || p[2] == 0 |
5e570b75 | 1227 | || (p[2] == '.' && (IS_DIRECTORY_SEP (p[3]) |
c77d647e | 1228 | || p[3] == 0)))) |
570d7624 | 1229 | lose = 1; |
214378ec GM |
1230 | /* We want to replace multiple `/' in a row with a single |
1231 | slash. */ | |
1232 | else if (p > nm | |
1233 | && IS_DIRECTORY_SEP (p[0]) | |
1234 | && IS_DIRECTORY_SEP (p[1])) | |
1235 | lose = 1; | |
efdc16c9 | 1236 | |
570d7624 JB |
1237 | #ifdef VMS |
1238 | if (p[0] == '\\') | |
1239 | lose = 1; | |
1240 | if (p[0] == '/') { | |
1241 | /* if dev:[dir]/, move nm to / */ | |
1242 | if (!slash && p > nm && (brack || colon)) { | |
1243 | nm = (brack ? brack + 1 : colon + 1); | |
1244 | lbrack = rbrack = 0; | |
1245 | brack = 0; | |
1246 | colon = 0; | |
1247 | } | |
1248 | slash = p; | |
1249 | } | |
1250 | if (p[0] == '-') | |
ad204e95 | 1251 | #ifdef NO_HYPHENS_IN_FILENAMES |
570d7624 JB |
1252 | if (lbrack == rbrack) |
1253 | { | |
ad204e95 TTN |
1254 | /* Avoid clobbering negative version numbers. */ |
1255 | if (dots < 2) | |
570d7624 JB |
1256 | p[0] = '_'; |
1257 | } | |
1258 | else | |
ad204e95 | 1259 | #endif /* NO_HYPHENS_IN_FILENAMES */ |
994a7262 RS |
1260 | if (lbrack > rbrack |
1261 | && ((p[-1] == '.' || p[-1] == '[' || p[-1] == '<') | |
1262 | && (p[1] == '.' || p[1] == ']' || p[1] == '>'))) | |
570d7624 | 1263 | lose = 1; |
ad204e95 | 1264 | #ifdef NO_HYPHENS_IN_FILENAMES |
570d7624 JB |
1265 | else |
1266 | p[0] = '_'; | |
ad204e95 | 1267 | #endif /* NO_HYPHENS_IN_FILENAMES */ |
570d7624 JB |
1268 | /* count open brackets, reset close bracket pointer */ |
1269 | if (p[0] == '[' || p[0] == '<') | |
1270 | lbrack++, brack = 0; | |
1271 | /* count close brackets, set close bracket pointer */ | |
1272 | if (p[0] == ']' || p[0] == '>') | |
1273 | rbrack++, brack = p; | |
1274 | /* detect ][ or >< */ | |
1275 | if ((p[0] == ']' || p[0] == '>') && (p[1] == '[' || p[1] == '<')) | |
1276 | lose = 1; | |
1277 | if ((p[0] == ':' || p[0] == ']' || p[0] == '>') && p[1] == '~') | |
1278 | nm = p + 1, lose = 1; | |
1279 | if (p[0] == ':' && (colon || slash)) | |
1280 | /* if dev1:[dir]dev2:, move nm to dev2: */ | |
1281 | if (brack) | |
1282 | { | |
1283 | nm = brack + 1; | |
1284 | brack = 0; | |
1285 | } | |
199607e4 | 1286 | /* if /name/dev:, move nm to dev: */ |
570d7624 JB |
1287 | else if (slash) |
1288 | nm = slash + 1; | |
1289 | /* if node::dev:, move colon following dev */ | |
1290 | else if (colon && colon[-1] == ':') | |
1291 | colon = p; | |
1292 | /* if dev1:dev2:, move nm to dev2: */ | |
1293 | else if (colon && colon[-1] != ':') | |
1294 | { | |
1295 | nm = colon + 1; | |
1296 | colon = 0; | |
1297 | } | |
1298 | if (p[0] == ':' && !colon) | |
1299 | { | |
1300 | if (p[1] == ':') | |
1301 | p++; | |
1302 | colon = p; | |
1303 | } | |
1304 | if (lbrack == rbrack) | |
1305 | if (p[0] == ';') | |
1306 | dots = 2; | |
1307 | else if (p[0] == '.') | |
1308 | dots++; | |
1309 | #endif /* VMS */ | |
1310 | p++; | |
1311 | } | |
1312 | if (!lose) | |
1313 | { | |
1314 | #ifdef VMS | |
1315 | if (index (nm, '/')) | |
d7231f93 KH |
1316 | { |
1317 | nm = sys_translate_unix (nm); | |
2b046a72 | 1318 | return make_specified_string (nm, -1, strlen (nm), multibyte); |
d7231f93 | 1319 | } |
570d7624 | 1320 | #endif /* VMS */ |
199607e4 RS |
1321 | #ifdef DOS_NT |
1322 | /* Make sure directories are all separated with / or \ as | |
1323 | desired, but avoid allocation of a new string when not | |
1324 | required. */ | |
1325 | CORRECT_DIR_SEPS (nm); | |
1326 | #ifdef WINDOWSNT | |
1327 | if (IS_DIRECTORY_SEP (nm[1])) | |
1328 | { | |
d5db4077 | 1329 | if (strcmp (nm, SDATA (name)) != 0) |
2b046a72 | 1330 | name = make_specified_string (nm, -1, strlen (nm), multibyte); |
199607e4 RS |
1331 | } |
1332 | else | |
1333 | #endif | |
1334 | /* drive must be set, so this is okay */ | |
d5db4077 | 1335 | if (strcmp (nm - 2, SDATA (name)) != 0) |
199607e4 | 1336 | { |
3f817c73 KH |
1337 | char temp[] = " :"; |
1338 | ||
2b046a72 | 1339 | name = make_specified_string (nm, -1, p - nm, multibyte); |
3f817c73 KH |
1340 | temp[0] = DRIVE_LETTER (drive); |
1341 | name = concat2 (build_string (temp), name); | |
199607e4 RS |
1342 | } |
1343 | return name; | |
1344 | #else /* not DOS_NT */ | |
d5db4077 | 1345 | if (nm == SDATA (name)) |
570d7624 | 1346 | return name; |
2b046a72 | 1347 | return make_specified_string (nm, -1, strlen (nm), multibyte); |
5e570b75 | 1348 | #endif /* not DOS_NT */ |
570d7624 JB |
1349 | } |
1350 | } | |
1351 | ||
199607e4 RS |
1352 | /* At this point, nm might or might not be an absolute file name. We |
1353 | need to expand ~ or ~user if present, otherwise prefix nm with | |
1354 | default_directory if nm is not absolute, and finally collapse /./ | |
1355 | and /foo/../ sequences. | |
1356 | ||
1357 | We set newdir to be the appropriate prefix if one is needed: | |
1358 | - the relevant user directory if nm starts with ~ or ~user | |
1359 | - the specified drive's working dir (DOS/NT only) if nm does not | |
1360 | start with / | |
1361 | - the value of default_directory. | |
1362 | ||
1363 | Note that these prefixes are not guaranteed to be absolute (except | |
1364 | for the working dir of a drive). Therefore, to ensure we always | |
1365 | return an absolute name, if the final prefix is not absolute we | |
1366 | append it to the current working directory. */ | |
570d7624 JB |
1367 | |
1368 | newdir = 0; | |
1369 | ||
1370 | if (nm[0] == '~') /* prefix ~ */ | |
c77d647e | 1371 | { |
5e570b75 | 1372 | if (IS_DIRECTORY_SEP (nm[1]) |
570d7624 | 1373 | #ifdef VMS |
c77d647e | 1374 | || nm[1] == ':' |
5e570b75 | 1375 | #endif /* VMS */ |
c77d647e JB |
1376 | || nm[1] == 0) /* ~ by itself */ |
1377 | { | |
1378 | if (!(newdir = (unsigned char *) egetenv ("HOME"))) | |
1379 | newdir = (unsigned char *) ""; | |
199607e4 | 1380 | nm++; |
5e570b75 | 1381 | #ifdef DOS_NT |
9a1dc3be | 1382 | collapse_newdir = 0; |
4c3c22f3 | 1383 | #endif |
570d7624 | 1384 | #ifdef VMS |
c77d647e | 1385 | nm++; /* Don't leave the slash in nm. */ |
5e570b75 | 1386 | #endif /* VMS */ |
c77d647e JB |
1387 | } |
1388 | else /* ~user/filename */ | |
1389 | { | |
5e570b75 | 1390 | for (p = nm; *p && (!IS_DIRECTORY_SEP (*p) |
570d7624 | 1391 | #ifdef VMS |
c77d647e | 1392 | && *p != ':' |
5e570b75 | 1393 | #endif /* VMS */ |
c77d647e JB |
1394 | ); p++); |
1395 | o = (unsigned char *) alloca (p - nm + 1); | |
1396 | bcopy ((char *) nm, o, p - nm); | |
1397 | o [p - nm] = 0; | |
1398 | ||
67c08d6c | 1399 | BLOCK_INPUT; |
c77d647e | 1400 | pw = (struct passwd *) getpwnam (o + 1); |
67c08d6c | 1401 | UNBLOCK_INPUT; |
c77d647e JB |
1402 | if (pw) |
1403 | { | |
1404 | newdir = (unsigned char *) pw -> pw_dir; | |
570d7624 | 1405 | #ifdef VMS |
c77d647e | 1406 | nm = p + 1; /* skip the terminator */ |
570d7624 | 1407 | #else |
c77d647e | 1408 | nm = p; |
199607e4 | 1409 | #ifdef DOS_NT |
9a1dc3be | 1410 | collapse_newdir = 0; |
199607e4 | 1411 | #endif |
5e570b75 | 1412 | #endif /* VMS */ |
c77d647e | 1413 | } |
e5d77022 | 1414 | |
c77d647e JB |
1415 | /* If we don't find a user of that name, leave the name |
1416 | unchanged; don't move nm forward to p. */ | |
1417 | } | |
1418 | } | |
570d7624 | 1419 | |
5e570b75 | 1420 | #ifdef DOS_NT |
199607e4 RS |
1421 | /* On DOS and Windows, nm is absolute if a drive name was specified; |
1422 | use the drive's current directory as the prefix if needed. */ | |
1423 | if (!newdir && drive) | |
1424 | { | |
1425 | /* Get default directory if needed to make nm absolute. */ | |
1426 | if (!IS_DIRECTORY_SEP (nm[0])) | |
1427 | { | |
1428 | newdir = alloca (MAXPATHLEN + 1); | |
1429 | if (!getdefdir (toupper (drive) - 'A' + 1, newdir)) | |
1430 | newdir = NULL; | |
1431 | } | |
1432 | if (!newdir) | |
1433 | { | |
1434 | /* Either nm starts with /, or drive isn't mounted. */ | |
1435 | newdir = alloca (4); | |
f94988a7 | 1436 | newdir[0] = DRIVE_LETTER (drive); |
199607e4 RS |
1437 | newdir[1] = ':'; |
1438 | newdir[2] = '/'; | |
1439 | newdir[3] = 0; | |
1440 | } | |
1441 | } | |
5e570b75 | 1442 | #endif /* DOS_NT */ |
199607e4 RS |
1443 | |
1444 | /* Finally, if no prefix has been specified and nm is not absolute, | |
1445 | then it must be expanded relative to default_directory. */ | |
1446 | ||
34097368 | 1447 | if (1 |
199607e4 RS |
1448 | #ifndef DOS_NT |
1449 | /* /... alone is not absolute on DOS and Windows. */ | |
34097368 | 1450 | && !IS_DIRECTORY_SEP (nm[0]) |
199607e4 RS |
1451 | #endif |
1452 | #ifdef WINDOWSNT | |
34097368 | 1453 | && !(IS_DIRECTORY_SEP (nm[0]) && IS_DIRECTORY_SEP (nm[1])) |
199607e4 RS |
1454 | #endif |
1455 | #ifdef VMS | |
1456 | && !index (nm, ':') | |
1457 | #endif | |
570d7624 JB |
1458 | && !newdir) |
1459 | { | |
d5db4077 | 1460 | newdir = SDATA (default_directory); |
f0f95d31 RS |
1461 | #ifdef DOS_NT |
1462 | /* Note if special escape prefix is present, but remove for now. */ | |
1463 | if (newdir[0] == '/' && newdir[1] == ':') | |
1464 | { | |
1465 | is_escaped = 1; | |
1466 | newdir += 2; | |
1467 | } | |
1468 | #endif | |
570d7624 JB |
1469 | } |
1470 | ||
5e570b75 | 1471 | #ifdef DOS_NT |
199607e4 RS |
1472 | if (newdir) |
1473 | { | |
1474 | /* First ensure newdir is an absolute name. */ | |
1475 | if ( | |
1476 | /* Detect MSDOS file names with drive specifiers. */ | |
1477 | ! (IS_DRIVE (newdir[0]) | |
1478 | && IS_DEVICE_SEP (newdir[1]) && IS_DIRECTORY_SEP (newdir[2])) | |
1479 | #ifdef WINDOWSNT | |
1480 | /* Detect Windows file names in UNC format. */ | |
1481 | && ! (IS_DIRECTORY_SEP (newdir[0]) && IS_DIRECTORY_SEP (newdir[1])) | |
1482 | #endif | |
1483 | ) | |
1484 | { | |
1485 | /* Effectively, let newdir be (expand-file-name newdir cwd). | |
1486 | Because of the admonition against calling expand-file-name | |
1487 | when we have pointers into lisp strings, we accomplish this | |
1488 | indirectly by prepending newdir to nm if necessary, and using | |
1489 | cwd (or the wd of newdir's drive) as the new newdir. */ | |
1490 | ||
c70a4df6 | 1491 | if (IS_DRIVE (newdir[0]) && IS_DEVICE_SEP (newdir[1])) |
199607e4 RS |
1492 | { |
1493 | drive = newdir[0]; | |
1494 | newdir += 2; | |
1495 | } | |
1496 | if (!IS_DIRECTORY_SEP (nm[0])) | |
1497 | { | |
1498 | char * tmp = alloca (strlen (newdir) + strlen (nm) + 2); | |
1499 | file_name_as_directory (tmp, newdir); | |
1500 | strcat (tmp, nm); | |
1501 | nm = tmp; | |
1502 | } | |
1503 | newdir = alloca (MAXPATHLEN + 1); | |
1504 | if (drive) | |
1505 | { | |
1506 | if (!getdefdir (toupper (drive) - 'A' + 1, newdir)) | |
1507 | newdir = "/"; | |
1508 | } | |
1509 | else | |
1510 | getwd (newdir); | |
1511 | } | |
1512 | ||
1513 | /* Strip off drive name from prefix, if present. */ | |
c70a4df6 | 1514 | if (IS_DRIVE (newdir[0]) && IS_DEVICE_SEP (newdir[1])) |
199607e4 RS |
1515 | { |
1516 | drive = newdir[0]; | |
1517 | newdir += 2; | |
1518 | } | |
1519 | ||
1520 | /* Keep only a prefix from newdir if nm starts with slash | |
82330e7f | 1521 | (//server/share for UNC, nothing otherwise). */ |
9a1dc3be | 1522 | if (IS_DIRECTORY_SEP (nm[0]) && collapse_newdir) |
199607e4 RS |
1523 | { |
1524 | #ifdef WINDOWSNT | |
1525 | if (IS_DIRECTORY_SEP (newdir[0]) && IS_DIRECTORY_SEP (newdir[1])) | |
1526 | { | |
1527 | newdir = strcpy (alloca (strlen (newdir) + 1), newdir); | |
1528 | p = newdir + 2; | |
1529 | while (*p && !IS_DIRECTORY_SEP (*p)) p++; | |
1530 | p++; | |
1531 | while (*p && !IS_DIRECTORY_SEP (*p)) p++; | |
1532 | *p = 0; | |
1533 | } | |
1534 | else | |
1535 | #endif | |
1536 | newdir = ""; | |
1537 | } | |
1538 | } | |
5e570b75 | 1539 | #endif /* DOS_NT */ |
199607e4 RS |
1540 | |
1541 | if (newdir) | |
bfb61299 | 1542 | { |
57676091 | 1543 | /* Get rid of any slash at the end of newdir, unless newdir is |
f0f95d31 | 1544 | just / or // (an incomplete UNC name). */ |
199607e4 | 1545 | length = strlen (newdir); |
f0f95d31 | 1546 | if (length > 1 && IS_DIRECTORY_SEP (newdir[length - 1]) |
57676091 RS |
1547 | #ifdef WINDOWSNT |
1548 | && !(length == 2 && IS_DIRECTORY_SEP (newdir[0])) | |
1549 | #endif | |
1550 | ) | |
bfb61299 JB |
1551 | { |
1552 | unsigned char *temp = (unsigned char *) alloca (length); | |
1553 | bcopy (newdir, temp, length - 1); | |
1554 | temp[length - 1] = 0; | |
1555 | newdir = temp; | |
1556 | } | |
1557 | tlen = length + 1; | |
1558 | } | |
1559 | else | |
1560 | tlen = 0; | |
570d7624 | 1561 | |
bfb61299 JB |
1562 | /* Now concatenate the directory and name to new space in the stack frame */ |
1563 | tlen += strlen (nm) + 1; | |
5e570b75 | 1564 | #ifdef DOS_NT |
f0f95d31 RS |
1565 | /* Reserve space for drive specifier and escape prefix, since either |
1566 | or both may need to be inserted. (The Microsoft x86 compiler | |
5e570b75 | 1567 | produces incorrect code if the following two lines are combined.) */ |
f0f95d31 RS |
1568 | target = (unsigned char *) alloca (tlen + 4); |
1569 | target += 4; | |
5e570b75 | 1570 | #else /* not DOS_NT */ |
570d7624 | 1571 | target = (unsigned char *) alloca (tlen); |
5e570b75 | 1572 | #endif /* not DOS_NT */ |
570d7624 JB |
1573 | *target = 0; |
1574 | ||
1575 | if (newdir) | |
1576 | { | |
1577 | #ifndef VMS | |
5e570b75 | 1578 | if (nm[0] == 0 || IS_DIRECTORY_SEP (nm[0])) |
f5321b5c | 1579 | { |
3ea2d8b2 | 1580 | #ifdef DOS_NT |
f5321b5c RS |
1581 | /* If newdir is effectively "C:/", then the drive letter will have |
1582 | been stripped and newdir will be "/". Concatenating with an | |
1583 | absolute directory in nm produces "//", which will then be | |
1584 | incorrectly treated as a network share. Ignore newdir in | |
1585 | this case (keeping the drive letter). */ | |
efdc16c9 | 1586 | if (!(drive && nm[0] && IS_DIRECTORY_SEP (newdir[0]) |
f5321b5c RS |
1587 | && newdir[1] == '\0')) |
1588 | #endif | |
1589 | strcpy (target, newdir); | |
1590 | } | |
570d7624 JB |
1591 | else |
1592 | #endif | |
c77d647e | 1593 | file_name_as_directory (target, newdir); |
570d7624 JB |
1594 | } |
1595 | ||
1596 | strcat (target, nm); | |
1597 | #ifdef VMS | |
1598 | if (index (target, '/')) | |
1599 | strcpy (target, sys_translate_unix (target)); | |
1600 | #endif /* VMS */ | |
1601 | ||
199607e4 RS |
1602 | /* ASSERT (IS_DIRECTORY_SEP (target[0])) if not VMS */ |
1603 | ||
214378ec GM |
1604 | /* Now canonicalize by removing `//', `/.' and `/foo/..' if they |
1605 | appear. */ | |
570d7624 JB |
1606 | |
1607 | p = target; | |
1608 | o = target; | |
1609 | ||
1610 | while (*p) | |
1611 | { | |
1612 | #ifdef VMS | |
1613 | if (*p != ']' && *p != '>' && *p != '-') | |
1614 | { | |
1615 | if (*p == '\\') | |
1616 | p++; | |
1617 | *o++ = *p++; | |
1618 | } | |
1619 | else if ((p[0] == ']' || p[0] == '>') && p[0] == p[1] + 2) | |
1620 | /* brackets are offset from each other by 2 */ | |
1621 | { | |
1622 | p += 2; | |
1623 | if (*p != '.' && *p != '-' && o[-1] != '.') | |
1624 | /* convert [foo][bar] to [bar] */ | |
1625 | while (o[-1] != '[' && o[-1] != '<') | |
1626 | o--; | |
1627 | else if (*p == '-' && *o != '.') | |
1628 | *--p = '.'; | |
1629 | } | |
994a7262 RS |
1630 | else if (p[0] == '-' && o[-1] == '.' |
1631 | && (p[1] == '.' || p[1] == ']' || p[1] == '>')) | |
570d7624 JB |
1632 | /* flush .foo.- ; leave - if stopped by '[' or '<' */ |
1633 | { | |
1634 | do | |
1635 | o--; | |
1636 | while (o[-1] != '.' && o[-1] != '[' && o[-1] != '<'); | |
5e570b75 | 1637 | if (p[1] == '.') /* foo.-.bar ==> bar. */ |
570d7624 JB |
1638 | p += 2; |
1639 | else if (o[-1] == '.') /* '.foo.-]' ==> ']' */ | |
1640 | p++, o--; | |
1641 | /* else [foo.-] ==> [-] */ | |
1642 | } | |
1643 | else | |
1644 | { | |
ad204e95 | 1645 | #ifdef NO_HYPHENS_IN_FILENAMES |
994a7262 RS |
1646 | if (*p == '-' |
1647 | && o[-1] != '[' && o[-1] != '<' && o[-1] != '.' | |
1648 | && p[1] != ']' && p[1] != '>' && p[1] != '.') | |
570d7624 | 1649 | *p = '_'; |
ad204e95 | 1650 | #endif /* NO_HYPHENS_IN_FILENAMES */ |
570d7624 JB |
1651 | *o++ = *p++; |
1652 | } | |
1653 | #else /* not VMS */ | |
5e570b75 RS |
1654 | if (!IS_DIRECTORY_SEP (*p)) |
1655 | { | |
570d7624 JB |
1656 | *o++ = *p++; |
1657 | } | |
b8f7f3be | 1658 | else if (p[1] == '.' |
5e570b75 | 1659 | && (IS_DIRECTORY_SEP (p[2]) |
c77d647e JB |
1660 | || p[2] == 0)) |
1661 | { | |
1662 | /* If "/." is the entire filename, keep the "/". Otherwise, | |
1663 | just delete the whole "/.". */ | |
1664 | if (o == target && p[2] == '\0') | |
1665 | *o++ = *p; | |
1666 | p += 2; | |
1667 | } | |
b8f7f3be | 1668 | else if (p[1] == '.' && p[2] == '.' |
aa4060b9 EZ |
1669 | /* `/../' is the "superroot" on certain file systems. |
1670 | Turned off on DOS_NT systems because they have no | |
1671 | "superroot" and because this causes us to produce | |
1672 | file names like "d:/../foo" which fail file-related | |
1673 | functions of the underlying OS. (To reproduce, try a | |
1674 | long series of "../../" in default_directory, longer | |
1675 | than the number of levels from the root.) */ | |
1676 | #ifndef DOS_NT | |
570d7624 | 1677 | && o != target |
aa4060b9 | 1678 | #endif |
5e570b75 | 1679 | && (IS_DIRECTORY_SEP (p[3]) || p[3] == 0)) |
570d7624 | 1680 | { |
5e570b75 | 1681 | while (o != target && (--o) && !IS_DIRECTORY_SEP (*o)) |
570d7624 | 1682 | ; |
795de720 RS |
1683 | /* Keep initial / only if this is the whole name. */ |
1684 | if (o == target && IS_ANY_SEP (*o) && p[3] == 0) | |
51b1d12e | 1685 | ++o; |
570d7624 JB |
1686 | p += 3; |
1687 | } | |
b8f7f3be SM |
1688 | else if (p > target && IS_DIRECTORY_SEP (p[1])) |
1689 | /* Collapse multiple `/' in a row. */ | |
1690 | p++; | |
570d7624 | 1691 | else |
5e570b75 | 1692 | { |
570d7624 JB |
1693 | *o++ = *p++; |
1694 | } | |
1695 | #endif /* not VMS */ | |
1696 | } | |
1697 | ||
5e570b75 | 1698 | #ifdef DOS_NT |
199607e4 | 1699 | /* At last, set drive name. */ |
5e570b75 | 1700 | #ifdef WINDOWSNT |
199607e4 RS |
1701 | /* Except for network file name. */ |
1702 | if (!(IS_DIRECTORY_SEP (target[0]) && IS_DIRECTORY_SEP (target[1]))) | |
5e570b75 | 1703 | #endif /* WINDOWSNT */ |
4c3c22f3 | 1704 | { |
199607e4 | 1705 | if (!drive) abort (); |
4c3c22f3 | 1706 | target -= 2; |
f94988a7 | 1707 | target[0] = DRIVE_LETTER (drive); |
4c3c22f3 RS |
1708 | target[1] = ':'; |
1709 | } | |
f0f95d31 RS |
1710 | /* Reinsert the escape prefix if required. */ |
1711 | if (is_escaped) | |
1712 | { | |
1713 | target -= 2; | |
1714 | target[0] = '/'; | |
1715 | target[1] = ':'; | |
1716 | } | |
199607e4 | 1717 | CORRECT_DIR_SEPS (target); |
5e570b75 | 1718 | #endif /* DOS_NT */ |
4c3c22f3 | 1719 | |
2b046a72 | 1720 | result = make_specified_string (target, -1, o - target, multibyte); |
beb402de KG |
1721 | |
1722 | /* Again look to see if the file name has special constructs in it | |
1723 | and perhaps call the corresponding file handler. This is needed | |
1724 | for filenames such as "/foo/../user@host:/bar/../baz". Expanding | |
1725 | the ".." component gives us "/user@host:/bar/../baz" which needs | |
1726 | to be expanded again. */ | |
1727 | handler = Ffind_file_name_handler (result, Qexpand_file_name); | |
1728 | if (!NILP (handler)) | |
1729 | return call3 (handler, Qexpand_file_name, result, default_directory); | |
1730 | ||
1731 | return result; | |
570d7624 | 1732 | } |
5e570b75 | 1733 | |
4887597a EZ |
1734 | #if 0 |
1735 | /* PLEASE DO NOT DELETE THIS COMMENTED-OUT VERSION! | |
1736 | This is the old version of expand-file-name, before it was thoroughly | |
1737 | rewritten for Emacs 10.31. We leave this version here commented-out, | |
1738 | because the code is very complex and likely to have subtle bugs. If | |
1739 | bugs _are_ found, it might be of interest to look at the old code and | |
1740 | see what did it do in the relevant situation. | |
1741 | ||
1742 | Don't remove this code: it's true that it will be accessible via CVS, | |
1743 | but a few years from deletion, people will forget it is there. */ | |
1744 | ||
1745 | /* Changed this DEFUN to a DEAFUN, so as not to confuse `make-docfile'. */ | |
1746 | DEAFUN ("expand-file-name", Fexpand_file_name, Sexpand_file_name, 1, 2, 0, | |
1747 | "Convert FILENAME to absolute, and canonicalize it.\n\ | |
1748 | Second arg DEFAULT is directory to start with if FILENAME is relative\n\ | |
c70a4df6 | 1749 | \(does not start with slash); if DEFAULT is nil or missing,\n\ |
4887597a EZ |
1750 | the current buffer's value of default-directory is used.\n\ |
1751 | Filenames containing `.' or `..' as components are simplified;\n\ | |
1752 | initial `~/' expands to your home directory.\n\ | |
1753 | See also the function `substitute-in-file-name'.") | |
1754 | (name, defalt) | |
1755 | Lisp_Object name, defalt; | |
1756 | { | |
1757 | unsigned char *nm; | |
1758 | ||
1759 | register unsigned char *newdir, *p, *o; | |
1760 | int tlen; | |
1761 | unsigned char *target; | |
1762 | struct passwd *pw; | |
1763 | int lose; | |
1764 | #ifdef VMS | |
1765 | unsigned char * colon = 0; | |
1766 | unsigned char * close = 0; | |
1767 | unsigned char * slash = 0; | |
1768 | unsigned char * brack = 0; | |
1769 | int lbrack = 0, rbrack = 0; | |
1770 | int dots = 0; | |
1771 | #endif /* VMS */ | |
1772 | ||
b7826503 | 1773 | CHECK_STRING (name); |
4887597a EZ |
1774 | |
1775 | #ifdef VMS | |
1776 | /* Filenames on VMS are always upper case. */ | |
1777 | name = Fupcase (name); | |
1778 | #endif | |
1779 | ||
d5db4077 | 1780 | nm = SDATA (name); |
4887597a EZ |
1781 | |
1782 | /* If nm is absolute, flush ...// and detect /./ and /../. | |
1783 | If no /./ or /../ we can return right away. */ | |
1784 | if ( | |
1785 | nm[0] == '/' | |
1786 | #ifdef VMS | |
1787 | || index (nm, ':') | |
1788 | #endif /* VMS */ | |
1789 | ) | |
1790 | { | |
1791 | p = nm; | |
1792 | lose = 0; | |
1793 | while (*p) | |
1794 | { | |
1795 | if (p[0] == '/' && p[1] == '/' | |
4887597a EZ |
1796 | ) |
1797 | nm = p + 1; | |
1798 | if (p[0] == '/' && p[1] == '~') | |
1799 | nm = p + 1, lose = 1; | |
1800 | if (p[0] == '/' && p[1] == '.' | |
1801 | && (p[2] == '/' || p[2] == 0 | |
1802 | || (p[2] == '.' && (p[3] == '/' || p[3] == 0)))) | |
1803 | lose = 1; | |
1804 | #ifdef VMS | |
1805 | if (p[0] == '\\') | |
1806 | lose = 1; | |
1807 | if (p[0] == '/') { | |
1808 | /* if dev:[dir]/, move nm to / */ | |
1809 | if (!slash && p > nm && (brack || colon)) { | |
1810 | nm = (brack ? brack + 1 : colon + 1); | |
1811 | lbrack = rbrack = 0; | |
1812 | brack = 0; | |
1813 | colon = 0; | |
1814 | } | |
1815 | slash = p; | |
1816 | } | |
1817 | if (p[0] == '-') | |
1818 | #ifndef VMS4_4 | |
1819 | /* VMS pre V4.4,convert '-'s in filenames. */ | |
1820 | if (lbrack == rbrack) | |
1821 | { | |
1822 | if (dots < 2) /* this is to allow negative version numbers */ | |
1823 | p[0] = '_'; | |
1824 | } | |
1825 | else | |
1826 | #endif /* VMS4_4 */ | |
994a7262 RS |
1827 | if (lbrack > rbrack |
1828 | && ((p[-1] == '.' || p[-1] == '[' || p[-1] == '<') | |
1829 | && (p[1] == '.' || p[1] == ']' || p[1] == '>'))) | |
4887597a EZ |
1830 | lose = 1; |
1831 | #ifndef VMS4_4 | |
1832 | else | |
1833 | p[0] = '_'; | |
1834 | #endif /* VMS4_4 */ | |
1835 | /* count open brackets, reset close bracket pointer */ | |
1836 | if (p[0] == '[' || p[0] == '<') | |
1837 | lbrack++, brack = 0; | |
1838 | /* count close brackets, set close bracket pointer */ | |
1839 | if (p[0] == ']' || p[0] == '>') | |
1840 | rbrack++, brack = p; | |
1841 | /* detect ][ or >< */ | |
1842 | if ((p[0] == ']' || p[0] == '>') && (p[1] == '[' || p[1] == '<')) | |
1843 | lose = 1; | |
1844 | if ((p[0] == ':' || p[0] == ']' || p[0] == '>') && p[1] == '~') | |
1845 | nm = p + 1, lose = 1; | |
1846 | if (p[0] == ':' && (colon || slash)) | |
1847 | /* if dev1:[dir]dev2:, move nm to dev2: */ | |
1848 | if (brack) | |
1849 | { | |
1850 | nm = brack + 1; | |
1851 | brack = 0; | |
1852 | } | |
1853 | /* If /name/dev:, move nm to dev: */ | |
1854 | else if (slash) | |
1855 | nm = slash + 1; | |
1856 | /* If node::dev:, move colon following dev */ | |
1857 | else if (colon && colon[-1] == ':') | |
1858 | colon = p; | |
1859 | /* If dev1:dev2:, move nm to dev2: */ | |
1860 | else if (colon && colon[-1] != ':') | |
1861 | { | |
1862 | nm = colon + 1; | |
1863 | colon = 0; | |
1864 | } | |
1865 | if (p[0] == ':' && !colon) | |
1866 | { | |
1867 | if (p[1] == ':') | |
1868 | p++; | |
1869 | colon = p; | |
1870 | } | |
1871 | if (lbrack == rbrack) | |
1872 | if (p[0] == ';') | |
1873 | dots = 2; | |
1874 | else if (p[0] == '.') | |
1875 | dots++; | |
1876 | #endif /* VMS */ | |
1877 | p++; | |
1878 | } | |
1879 | if (!lose) | |
1880 | { | |
1881 | #ifdef VMS | |
1882 | if (index (nm, '/')) | |
1883 | return build_string (sys_translate_unix (nm)); | |
1884 | #endif /* VMS */ | |
d5db4077 | 1885 | if (nm == SDATA (name)) |
4887597a EZ |
1886 | return name; |
1887 | return build_string (nm); | |
1888 | } | |
1889 | } | |
1890 | ||
1891 | /* Now determine directory to start with and put it in NEWDIR */ | |
1892 | ||
1893 | newdir = 0; | |
1894 | ||
1895 | if (nm[0] == '~') /* prefix ~ */ | |
1896 | if (nm[1] == '/' | |
1897 | #ifdef VMS | |
1898 | || nm[1] == ':' | |
1899 | #endif /* VMS */ | |
1900 | || nm[1] == 0)/* ~/filename */ | |
1901 | { | |
1902 | if (!(newdir = (unsigned char *) egetenv ("HOME"))) | |
1903 | newdir = (unsigned char *) ""; | |
1904 | nm++; | |
1905 | #ifdef VMS | |
1906 | nm++; /* Don't leave the slash in nm. */ | |
1907 | #endif /* VMS */ | |
1908 | } | |
1909 | else /* ~user/filename */ | |
1910 | { | |
1911 | /* Get past ~ to user */ | |
1912 | unsigned char *user = nm + 1; | |
1913 | /* Find end of name. */ | |
1914 | unsigned char *ptr = (unsigned char *) index (user, '/'); | |
1915 | int len = ptr ? ptr - user : strlen (user); | |
1916 | #ifdef VMS | |
1917 | unsigned char *ptr1 = index (user, ':'); | |
1918 | if (ptr1 != 0 && ptr1 - user < len) | |
1919 | len = ptr1 - user; | |
1920 | #endif /* VMS */ | |
1921 | /* Copy the user name into temp storage. */ | |
1922 | o = (unsigned char *) alloca (len + 1); | |
1923 | bcopy ((char *) user, o, len); | |
1924 | o[len] = 0; | |
1925 | ||
1926 | /* Look up the user name. */ | |
67c08d6c | 1927 | BLOCK_INPUT; |
4887597a | 1928 | pw = (struct passwd *) getpwnam (o + 1); |
67c08d6c | 1929 | UNBLOCK_INPUT; |
4887597a EZ |
1930 | if (!pw) |
1931 | error ("\"%s\" isn't a registered user", o + 1); | |
1932 | ||
1933 | newdir = (unsigned char *) pw->pw_dir; | |
1934 | ||
1935 | /* Discard the user name from NM. */ | |
1936 | nm += len; | |
1937 | } | |
1938 | ||
1939 | if (nm[0] != '/' | |
1940 | #ifdef VMS | |
1941 | && !index (nm, ':') | |
1942 | #endif /* not VMS */ | |
1943 | && !newdir) | |
1944 | { | |
1945 | if (NILP (defalt)) | |
1946 | defalt = current_buffer->directory; | |
b7826503 | 1947 | CHECK_STRING (defalt); |
d5db4077 | 1948 | newdir = SDATA (defalt); |
4887597a EZ |
1949 | } |
1950 | ||
1951 | /* Now concatenate the directory and name to new space in the stack frame */ | |
1952 | ||
1953 | tlen = (newdir ? strlen (newdir) + 1 : 0) + strlen (nm) + 1; | |
1954 | target = (unsigned char *) alloca (tlen); | |
1955 | *target = 0; | |
1956 | ||
1957 | if (newdir) | |
1958 | { | |
1959 | #ifndef VMS | |
1960 | if (nm[0] == 0 || nm[0] == '/') | |
1961 | strcpy (target, newdir); | |
1962 | else | |
1963 | #endif | |
1964 | file_name_as_directory (target, newdir); | |
1965 | } | |
1966 | ||
1967 | strcat (target, nm); | |
1968 | #ifdef VMS | |
1969 | if (index (target, '/')) | |
1970 | strcpy (target, sys_translate_unix (target)); | |
1971 | #endif /* VMS */ | |
1972 | ||
1973 | /* Now canonicalize by removing /. and /foo/.. if they appear */ | |
1974 | ||
1975 | p = target; | |
1976 | o = target; | |
1977 | ||
1978 | while (*p) | |
1979 | { | |
1980 | #ifdef VMS | |
1981 | if (*p != ']' && *p != '>' && *p != '-') | |
1982 | { | |
1983 | if (*p == '\\') | |
1984 | p++; | |
1985 | *o++ = *p++; | |
1986 | } | |
1987 | else if ((p[0] == ']' || p[0] == '>') && p[0] == p[1] + 2) | |
1988 | /* brackets are offset from each other by 2 */ | |
1989 | { | |
1990 | p += 2; | |
1991 | if (*p != '.' && *p != '-' && o[-1] != '.') | |
1992 | /* convert [foo][bar] to [bar] */ | |
1993 | while (o[-1] != '[' && o[-1] != '<') | |
1994 | o--; | |
1995 | else if (*p == '-' && *o != '.') | |
1996 | *--p = '.'; | |
1997 | } | |
994a7262 RS |
1998 | else if (p[0] == '-' && o[-1] == '.' |
1999 | && (p[1] == '.' || p[1] == ']' || p[1] == '>')) | |
4887597a EZ |
2000 | /* flush .foo.- ; leave - if stopped by '[' or '<' */ |
2001 | { | |
2002 | do | |
2003 | o--; | |
2004 | while (o[-1] != '.' && o[-1] != '[' && o[-1] != '<'); | |
2005 | if (p[1] == '.') /* foo.-.bar ==> bar. */ | |
2006 | p += 2; | |
2007 | else if (o[-1] == '.') /* '.foo.-]' ==> ']' */ | |
2008 | p++, o--; | |
2009 | /* else [foo.-] ==> [-] */ | |
2010 | } | |
2011 | else | |
2012 | { | |
2013 | #ifndef VMS4_4 | |
994a7262 RS |
2014 | if (*p == '-' |
2015 | && o[-1] != '[' && o[-1] != '<' && o[-1] != '.' | |
2016 | && p[1] != ']' && p[1] != '>' && p[1] != '.') | |
4887597a EZ |
2017 | *p = '_'; |
2018 | #endif /* VMS4_4 */ | |
2019 | *o++ = *p++; | |
2020 | } | |
2021 | #else /* not VMS */ | |
2022 | if (*p != '/') | |
2023 | { | |
2024 | *o++ = *p++; | |
2025 | } | |
2026 | else if (!strncmp (p, "//", 2) | |
4887597a EZ |
2027 | ) |
2028 | { | |
2029 | o = target; | |
2030 | p++; | |
2031 | } | |
994a7262 RS |
2032 | else if (p[0] == '/' && p[1] == '.' |
2033 | && (p[2] == '/' || p[2] == 0)) | |
4887597a EZ |
2034 | p += 2; |
2035 | else if (!strncmp (p, "/..", 3) | |
2036 | /* `/../' is the "superroot" on certain file systems. */ | |
2037 | && o != target | |
2038 | && (p[3] == '/' || p[3] == 0)) | |
2039 | { | |
2040 | while (o != target && *--o != '/') | |
2041 | ; | |
4887597a EZ |
2042 | if (o == target && *o == '/') |
2043 | ++o; | |
2044 | p += 3; | |
2045 | } | |
2046 | else | |
2047 | { | |
2048 | *o++ = *p++; | |
2049 | } | |
2050 | #endif /* not VMS */ | |
2051 | } | |
2052 | ||
2053 | return make_string (target, o - target); | |
2054 | } | |
2055 | #endif | |
570d7624 | 2056 | \f |
c70a4df6 SM |
2057 | /* If /~ or // appears, discard everything through first slash. */ |
2058 | static int | |
2059 | file_name_absolute_p (filename) | |
2060 | const unsigned char *filename; | |
2061 | { | |
2062 | return | |
2063 | (IS_DIRECTORY_SEP (*filename) || *filename == '~' | |
2064 | #ifdef VMS | |
2065 | /* ??? This criterion is probably wrong for '<'. */ | |
2066 | || index (filename, ':') || index (filename, '<') | |
2067 | || (*filename == '[' && (filename[1] != '-' | |
2068 | || (filename[2] != '.' && filename[2] != ']')) | |
2069 | && filename[1] != '.') | |
2070 | #endif /* VMS */ | |
2071 | #ifdef DOS_NT | |
2072 | || (IS_DRIVE (*filename) && IS_DEVICE_SEP (filename[1]) | |
2073 | && IS_DIRECTORY_SEP (filename[2])) | |
2074 | #endif | |
2075 | ); | |
2076 | } | |
2077 | ||
2078 | static unsigned char * | |
2079 | search_embedded_absfilename (nm, endp) | |
2080 | unsigned char *nm, *endp; | |
2081 | { | |
2082 | unsigned char *p, *s; | |
2083 | ||
2084 | for (p = nm + 1; p < endp; p++) | |
2085 | { | |
2086 | if ((0 | |
2087 | #ifdef VMS | |
2088 | || p[-1] == ':' || p[-1] == ']' || p[-1] == '>' | |
2089 | #endif /* VMS */ | |
2090 | || IS_DIRECTORY_SEP (p[-1])) | |
2091 | && file_name_absolute_p (p) | |
e39a993c | 2092 | #if defined (WINDOWSNT) || defined(CYGWIN) |
c70a4df6 SM |
2093 | /* // at start of file name is meaningful in Apollo, |
2094 | WindowsNT and Cygwin systems. */ | |
f34574c6 | 2095 | && !(IS_DIRECTORY_SEP (p[0]) && p - 1 == nm) |
e39a993c | 2096 | #endif /* not (WINDOWSNT || CYGWIN) */ |
c70a4df6 SM |
2097 | ) |
2098 | { | |
2099 | for (s = p; *s && (!IS_DIRECTORY_SEP (*s) | |
2100 | #ifdef VMS | |
2101 | && *s != ':' | |
2102 | #endif /* VMS */ | |
2103 | ); s++); | |
2104 | if (p[0] == '~' && s > p + 1) /* we've got "/~something/" */ | |
2105 | { | |
2106 | unsigned char *o = alloca (s - p + 1); | |
2107 | struct passwd *pw; | |
2108 | bcopy (p, o, s - p); | |
2109 | o [s - p] = 0; | |
2110 | ||
2111 | /* If we have ~user and `user' exists, discard | |
2112 | everything up to ~. But if `user' does not exist, leave | |
2113 | ~user alone, it might be a literal file name. */ | |
67c08d6c YM |
2114 | BLOCK_INPUT; |
2115 | pw = getpwnam (o + 1); | |
2116 | UNBLOCK_INPUT; | |
2117 | if (pw) | |
c70a4df6 | 2118 | return p; |
c70a4df6 SM |
2119 | } |
2120 | else | |
2121 | return p; | |
2122 | } | |
2123 | } | |
2124 | return NULL; | |
2125 | } | |
2126 | ||
570d7624 | 2127 | DEFUN ("substitute-in-file-name", Fsubstitute_in_file_name, |
8c1a1077 PJ |
2128 | Ssubstitute_in_file_name, 1, 1, 0, |
2129 | doc: /* Substitute environment variables referred to in FILENAME. | |
2130 | `$FOO' where FOO is an environment variable name means to substitute | |
2131 | the value of that variable. The variable name should be terminated | |
2132 | with a character not a letter, digit or underscore; otherwise, enclose | |
2133 | the entire variable name in braces. | |
2134 | If `/~' appears, all of FILENAME through that `/' is discarded. | |
2135 | ||
2136 | On VMS, `$' substitution is not done; this function does little and only | |
2137 | duplicates what `expand-file-name' does. */) | |
2138 | (filename) | |
3b7f6e60 | 2139 | Lisp_Object filename; |
570d7624 JB |
2140 | { |
2141 | unsigned char *nm; | |
2142 | ||
2143 | register unsigned char *s, *p, *o, *x, *endp; | |
6bbd7a29 | 2144 | unsigned char *target = NULL; |
570d7624 JB |
2145 | int total = 0; |
2146 | int substituted = 0; | |
2147 | unsigned char *xnm; | |
8ce069f5 | 2148 | Lisp_Object handler; |
570d7624 | 2149 | |
b7826503 | 2150 | CHECK_STRING (filename); |
570d7624 | 2151 | |
8ce069f5 RS |
2152 | /* If the file name has special constructs in it, |
2153 | call the corresponding file handler. */ | |
3b7f6e60 | 2154 | handler = Ffind_file_name_handler (filename, Qsubstitute_in_file_name); |
8ce069f5 | 2155 | if (!NILP (handler)) |
3b7f6e60 | 2156 | return call2 (handler, Qsubstitute_in_file_name, filename); |
8ce069f5 | 2157 | |
d5db4077 | 2158 | nm = SDATA (filename); |
199607e4 RS |
2159 | #ifdef DOS_NT |
2160 | nm = strcpy (alloca (strlen (nm) + 1), nm); | |
2161 | CORRECT_DIR_SEPS (nm); | |
d5db4077 | 2162 | substituted = (strcmp (nm, SDATA (filename)) != 0); |
a5a1cc06 | 2163 | #endif |
d5db4077 | 2164 | endp = nm + SBYTES (filename); |
570d7624 | 2165 | |
82330e7f | 2166 | /* If /~ or // appears, discard everything through first slash. */ |
c70a4df6 SM |
2167 | p = search_embedded_absfilename (nm, endp); |
2168 | if (p) | |
2169 | /* Start over with the new string, so we check the file-name-handler | |
2170 | again. Important with filenames like "/home/foo//:/hello///there" | |
2171 | which whould substitute to "/:/hello///there" rather than "/there". */ | |
2172 | return Fsubstitute_in_file_name | |
2173 | (make_specified_string (p, -1, endp - p, | |
2174 | STRING_MULTIBYTE (filename))); | |
570d7624 | 2175 | |
570d7624 | 2176 | #ifdef VMS |
c70a4df6 | 2177 | return filename; |
570d7624 JB |
2178 | #else |
2179 | ||
2180 | /* See if any variables are substituted into the string | |
2181 | and find the total length of their values in `total' */ | |
2182 | ||
2183 | for (p = nm; p != endp;) | |
2184 | if (*p != '$') | |
2185 | p++; | |
2186 | else | |
2187 | { | |
2188 | p++; | |
2189 | if (p == endp) | |
2190 | goto badsubst; | |
2191 | else if (*p == '$') | |
2192 | { | |
2193 | /* "$$" means a single "$" */ | |
2194 | p++; | |
2195 | total -= 1; | |
2196 | substituted = 1; | |
2197 | continue; | |
2198 | } | |
2199 | else if (*p == '{') | |
2200 | { | |
2201 | o = ++p; | |
2202 | while (p != endp && *p != '}') p++; | |
2203 | if (*p != '}') goto missingclose; | |
2204 | s = p; | |
2205 | } | |
2206 | else | |
2207 | { | |
2208 | o = p; | |
2209 | while (p != endp && (isalnum (*p) || *p == '_')) p++; | |
2210 | s = p; | |
2211 | } | |
2212 | ||
2213 | /* Copy out the variable name */ | |
2214 | target = (unsigned char *) alloca (s - o + 1); | |
2215 | strncpy (target, o, s - o); | |
2216 | target[s - o] = 0; | |
5e570b75 | 2217 | #ifdef DOS_NT |
4c3c22f3 | 2218 | strupr (target); /* $home == $HOME etc. */ |
5e570b75 | 2219 | #endif /* DOS_NT */ |
570d7624 JB |
2220 | |
2221 | /* Get variable value */ | |
2222 | o = (unsigned char *) egetenv (target); | |
8d2ced53 SM |
2223 | if (o) |
2224 | { | |
2225 | total += strlen (o); | |
2226 | substituted = 1; | |
2227 | } | |
2228 | else if (*p == '}') | |
2229 | goto badvar; | |
570d7624 JB |
2230 | } |
2231 | ||
2232 | if (!substituted) | |
3b7f6e60 | 2233 | return filename; |
570d7624 JB |
2234 | |
2235 | /* If substitution required, recopy the string and do it */ | |
2236 | /* Make space in stack frame for the new copy */ | |
d5db4077 | 2237 | xnm = (unsigned char *) alloca (SBYTES (filename) + total + 1); |
570d7624 JB |
2238 | x = xnm; |
2239 | ||
2240 | /* Copy the rest of the name through, replacing $ constructs with values */ | |
2241 | for (p = nm; *p;) | |
2242 | if (*p != '$') | |
2243 | *x++ = *p++; | |
2244 | else | |
2245 | { | |
2246 | p++; | |
2247 | if (p == endp) | |
2248 | goto badsubst; | |
2249 | else if (*p == '$') | |
2250 | { | |
2251 | *x++ = *p++; | |
2252 | continue; | |
2253 | } | |
2254 | else if (*p == '{') | |
2255 | { | |
2256 | o = ++p; | |
2257 | while (p != endp && *p != '}') p++; | |
2258 | if (*p != '}') goto missingclose; | |
2259 | s = p++; | |
2260 | } | |
2261 | else | |
2262 | { | |
2263 | o = p; | |
2264 | while (p != endp && (isalnum (*p) || *p == '_')) p++; | |
2265 | s = p; | |
2266 | } | |
2267 | ||
2268 | /* Copy out the variable name */ | |
2269 | target = (unsigned char *) alloca (s - o + 1); | |
2270 | strncpy (target, o, s - o); | |
2271 | target[s - o] = 0; | |
5e570b75 | 2272 | #ifdef DOS_NT |
4c3c22f3 | 2273 | strupr (target); /* $home == $HOME etc. */ |
5e570b75 | 2274 | #endif /* DOS_NT */ |
570d7624 JB |
2275 | |
2276 | /* Get variable value */ | |
2277 | o = (unsigned char *) egetenv (target); | |
570d7624 | 2278 | if (!o) |
8d2ced53 SM |
2279 | { |
2280 | *x++ = '$'; | |
2281 | strcpy (x, target); x+= strlen (target); | |
2282 | } | |
2283 | else if (STRING_MULTIBYTE (filename)) | |
60d67b83 RS |
2284 | { |
2285 | /* If the original string is multibyte, | |
2286 | convert what we substitute into multibyte. */ | |
60d67b83 RS |
2287 | while (*o) |
2288 | { | |
dc5142f6 KH |
2289 | int c = *o++; |
2290 | c = unibyte_char_to_multibyte (c); | |
ce51c54c | 2291 | x += CHAR_STRING (c, x); |
60d67b83 RS |
2292 | } |
2293 | } | |
2294 | else | |
2295 | { | |
2296 | strcpy (x, o); | |
2297 | x += strlen (o); | |
2298 | } | |
570d7624 JB |
2299 | } |
2300 | ||
2301 | *x = 0; | |
2302 | ||
82330e7f | 2303 | /* If /~ or // appears, discard everything through first slash. */ |
c70a4df6 SM |
2304 | while ((p = search_embedded_absfilename (xnm, x))) |
2305 | /* This time we do not start over because we've already expanded envvars | |
2306 | and replaced $$ with $. Maybe we should start over as well, but we'd | |
2307 | need to quote some $ to $$ first. */ | |
2308 | xnm = p; | |
570d7624 | 2309 | |
d7231f93 | 2310 | return make_specified_string (xnm, -1, x - xnm, STRING_MULTIBYTE (filename)); |
570d7624 JB |
2311 | |
2312 | badsubst: | |
2313 | error ("Bad format environment-variable substitution"); | |
2314 | missingclose: | |
2315 | error ("Missing \"}\" in environment-variable substitution"); | |
2316 | badvar: | |
2317 | error ("Substituting nonexistent environment variable \"%s\"", target); | |
2318 | ||
2319 | /* NOTREACHED */ | |
2320 | #endif /* not VMS */ | |
6bbd7a29 | 2321 | return Qnil; |
570d7624 JB |
2322 | } |
2323 | \f | |
067ffa38 | 2324 | /* A slightly faster and more convenient way to get |
298b760e | 2325 | (directory-file-name (expand-file-name FOO)). */ |
067ffa38 | 2326 | |
570d7624 JB |
2327 | Lisp_Object |
2328 | expand_and_dir_to_file (filename, defdir) | |
2329 | Lisp_Object filename, defdir; | |
2330 | { | |
199607e4 | 2331 | register Lisp_Object absname; |
570d7624 | 2332 | |
199607e4 | 2333 | absname = Fexpand_file_name (filename, defdir); |
570d7624 JB |
2334 | #ifdef VMS |
2335 | { | |
d5db4077 | 2336 | register int c = SREF (absname, SBYTES (absname) - 1); |
570d7624 | 2337 | if (c == ':' || c == ']' || c == '>') |
199607e4 | 2338 | absname = Fdirectory_file_name (absname); |
570d7624 JB |
2339 | } |
2340 | #else | |
199607e4 | 2341 | /* Remove final slash, if any (unless this is the root dir). |
570d7624 | 2342 | stat behaves differently depending! */ |
d5db4077 KR |
2343 | if (SCHARS (absname) > 1 |
2344 | && IS_DIRECTORY_SEP (SREF (absname, SBYTES (absname) - 1)) | |
2345 | && !IS_DEVICE_SEP (SREF (absname, SBYTES (absname)-2))) | |
ddc61f46 | 2346 | /* We cannot take shortcuts; they might be wrong for magic file names. */ |
199607e4 | 2347 | absname = Fdirectory_file_name (absname); |
570d7624 | 2348 | #endif |
199607e4 | 2349 | return absname; |
570d7624 JB |
2350 | } |
2351 | \f | |
3ed15d97 RS |
2352 | /* Signal an error if the file ABSNAME already exists. |
2353 | If INTERACTIVE is nonzero, ask the user whether to proceed, | |
2354 | and bypass the error if the user says to go ahead. | |
2355 | QUERYSTRING is a name for the action that is being considered | |
2356 | to alter the file. | |
de1d0127 | 2357 | |
3ed15d97 | 2358 | *STATPTR is used to store the stat information if the file exists. |
de1d0127 | 2359 | If the file does not exist, STATPTR->st_mode is set to 0. |
b8b29dc9 RS |
2360 | If STATPTR is null, we don't store into it. |
2361 | ||
2362 | If QUICK is nonzero, we ask for y or n, not yes or no. */ | |
3ed15d97 | 2363 | |
c4df73f9 | 2364 | void |
b8b29dc9 | 2365 | barf_or_query_if_file_exists (absname, querystring, interactive, statptr, quick) |
570d7624 JB |
2366 | Lisp_Object absname; |
2367 | unsigned char *querystring; | |
2368 | int interactive; | |
3ed15d97 | 2369 | struct stat *statptr; |
b8b29dc9 | 2370 | int quick; |
570d7624 | 2371 | { |
643c73b9 | 2372 | register Lisp_Object tem, encoded_filename; |
4018b5ef | 2373 | struct stat statbuf; |
570d7624 JB |
2374 | struct gcpro gcpro1; |
2375 | ||
643c73b9 RS |
2376 | encoded_filename = ENCODE_FILE (absname); |
2377 | ||
4018b5ef RS |
2378 | /* stat is a good way to tell whether the file exists, |
2379 | regardless of what access permissions it has. */ | |
f72b5416 | 2380 | if (lstat (SDATA (encoded_filename), &statbuf) >= 0) |
570d7624 JB |
2381 | { |
2382 | if (! interactive) | |
24b1ddad KS |
2383 | xsignal2 (Qfile_already_exists, |
2384 | build_string ("File already exists"), absname); | |
570d7624 | 2385 | GCPRO1 (absname); |
67e8e2b8 RS |
2386 | tem = format2 ("File %s already exists; %s anyway? ", |
2387 | absname, build_string (querystring)); | |
b8b29dc9 RS |
2388 | if (quick) |
2389 | tem = Fy_or_n_p (tem); | |
2390 | else | |
2391 | tem = do_yes_or_no_p (tem); | |
570d7624 | 2392 | UNGCPRO; |
265a9e55 | 2393 | if (NILP (tem)) |
24b1ddad KS |
2394 | xsignal2 (Qfile_already_exists, |
2395 | build_string ("File already exists"), absname); | |
3ed15d97 RS |
2396 | if (statptr) |
2397 | *statptr = statbuf; | |
2398 | } | |
2399 | else | |
2400 | { | |
2401 | if (statptr) | |
2402 | statptr->st_mode = 0; | |
570d7624 JB |
2403 | } |
2404 | return; | |
2405 | } | |
2406 | ||
795c20df | 2407 | DEFUN ("copy-file", Fcopy_file, Scopy_file, 2, 5, |
7c0f6118 | 2408 | "fCopy file: \nGCopy %s to file: \np\nP", |
8c1a1077 PJ |
2409 | doc: /* Copy FILE to NEWNAME. Both args must be strings. |
2410 | If NEWNAME names a directory, copy FILE there. | |
795c20df CY |
2411 | |
2412 | This function always sets the file modes of the output file to match | |
2413 | the input file. | |
2414 | ||
2415 | The optional third argument OK-IF-ALREADY-EXISTS specifies what to do | |
2416 | if file NEWNAME already exists. If OK-IF-ALREADY-EXISTS is nil, we | |
2417 | signal a `file-already-exists' error without overwriting. If | |
2418 | OK-IF-ALREADY-EXISTS is a number, we request confirmation from the user | |
2419 | about overwriting; this is what happens in interactive use with M-x. | |
2420 | Any other value for OK-IF-ALREADY-EXISTS means to overwrite the | |
2421 | existing file. | |
c50f15d0 | 2422 | |
7f08b80e | 2423 | Fourth arg KEEP-TIME non-nil means give the output file the same |
8c1a1077 | 2424 | last-modified time as the old one. (This works on only some systems.) |
c50f15d0 | 2425 | |
7fce7dfe EZ |
2426 | A prefix arg makes KEEP-TIME non-nil. |
2427 | ||
586702ce RS |
2428 | If PRESERVE-UID-GID is non-nil, we try to transfer the |
2429 | uid and gid of FILE to NEWNAME. */) | |
795c20df CY |
2430 | (file, newname, ok_if_already_exists, keep_time, preserve_uid_gid) |
2431 | Lisp_Object file, newname, ok_if_already_exists, keep_time; | |
586702ce | 2432 | Lisp_Object preserve_uid_gid; |
570d7624 JB |
2433 | { |
2434 | int ifd, ofd, n; | |
2435 | char buf[16 * 1024]; | |
3ed15d97 | 2436 | struct stat st, out_st; |
32f4334d | 2437 | Lisp_Object handler; |
b1d1b865 | 2438 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; |
aed13378 | 2439 | int count = SPECPDL_INDEX (); |
f73b0ada | 2440 | int input_file_statable_p; |
b1d1b865 | 2441 | Lisp_Object encoded_file, encoded_newname; |
570d7624 | 2442 | |
b1d1b865 RS |
2443 | encoded_file = encoded_newname = Qnil; |
2444 | GCPRO4 (file, newname, encoded_file, encoded_newname); | |
b7826503 PJ |
2445 | CHECK_STRING (file); |
2446 | CHECK_STRING (newname); | |
b1d1b865 | 2447 | |
a9d14e54 | 2448 | if (!NILP (Ffile_directory_p (newname))) |
6b61353c | 2449 | newname = Fexpand_file_name (Ffile_name_nondirectory (file), newname); |
a9d14e54 GM |
2450 | else |
2451 | newname = Fexpand_file_name (newname, Qnil); | |
2452 | ||
3b7f6e60 | 2453 | file = Fexpand_file_name (file, Qnil); |
32f4334d | 2454 | |
0bf2eed2 | 2455 | /* If the input file name has special constructs in it, |
32f4334d | 2456 | call the corresponding file handler. */ |
3b7f6e60 | 2457 | handler = Ffind_file_name_handler (file, Qcopy_file); |
0bf2eed2 | 2458 | /* Likewise for output file name. */ |
51cf6d37 | 2459 | if (NILP (handler)) |
49307295 | 2460 | handler = Ffind_file_name_handler (newname, Qcopy_file); |
32f4334d | 2461 | if (!NILP (handler)) |
1f163f28 MA |
2462 | RETURN_UNGCPRO (call6 (handler, Qcopy_file, file, newname, |
2463 | ok_if_already_exists, keep_time, preserve_uid_gid)); | |
32f4334d | 2464 | |
b1d1b865 RS |
2465 | encoded_file = ENCODE_FILE (file); |
2466 | encoded_newname = ENCODE_FILE (newname); | |
2467 | ||
265a9e55 | 2468 | if (NILP (ok_if_already_exists) |
93c30b5f | 2469 | || INTEGERP (ok_if_already_exists)) |
2f868094 | 2470 | barf_or_query_if_file_exists (newname, "copy to it", |
b8b29dc9 | 2471 | INTEGERP (ok_if_already_exists), &out_st, 0); |
d5db4077 | 2472 | else if (stat (SDATA (encoded_newname), &out_st) < 0) |
3ed15d97 | 2473 | out_st.st_mode = 0; |
570d7624 | 2474 | |
e8691c59 | 2475 | #ifdef WINDOWSNT |
d5db4077 | 2476 | if (!CopyFile (SDATA (encoded_file), |
efdc16c9 | 2477 | SDATA (encoded_newname), |
e8691c59 GM |
2478 | FALSE)) |
2479 | report_file_error ("Copying file", Fcons (file, Fcons (newname, Qnil))); | |
8b53dc06 JR |
2480 | /* CopyFile retains the timestamp by default. */ |
2481 | else if (NILP (keep_time)) | |
e8691c59 GM |
2482 | { |
2483 | EMACS_TIME now; | |
ad497129 JR |
2484 | DWORD attributes; |
2485 | char * filename; | |
2486 | ||
e8691c59 | 2487 | EMACS_GET_TIME (now); |
d5db4077 | 2488 | filename = SDATA (encoded_newname); |
ad497129 JR |
2489 | |
2490 | /* Ensure file is writable while its modified time is set. */ | |
2491 | attributes = GetFileAttributes (filename); | |
02cca86b | 2492 | SetFileAttributes (filename, attributes & ~FILE_ATTRIBUTE_READONLY); |
ad497129 JR |
2493 | if (set_file_times (filename, now, now)) |
2494 | { | |
2495 | /* Restore original attributes. */ | |
2496 | SetFileAttributes (filename, attributes); | |
24b1ddad KS |
2497 | xsignal2 (Qfile_date_error, |
2498 | build_string ("Cannot set file date"), newname); | |
ad497129 JR |
2499 | } |
2500 | /* Restore original attributes. */ | |
2501 | SetFileAttributes (filename, attributes); | |
e8691c59 GM |
2502 | } |
2503 | #else /* not WINDOWSNT */ | |
13336908 | 2504 | immediate_quit = 1; |
d5db4077 | 2505 | ifd = emacs_open (SDATA (encoded_file), O_RDONLY, 0); |
13336908 RS |
2506 | immediate_quit = 0; |
2507 | ||
570d7624 | 2508 | if (ifd < 0) |
3b7f6e60 | 2509 | report_file_error ("Opening input file", Fcons (file, Qnil)); |
570d7624 | 2510 | |
b5148e85 RS |
2511 | record_unwind_protect (close_file_unwind, make_number (ifd)); |
2512 | ||
f73b0ada BF |
2513 | /* We can only copy regular files and symbolic links. Other files are not |
2514 | copyable by us. */ | |
2515 | input_file_statable_p = (fstat (ifd, &st) >= 0); | |
2516 | ||
b016179b | 2517 | #if !defined (MSDOS) || __DJGPP__ > 1 |
3ed15d97 RS |
2518 | if (out_st.st_mode != 0 |
2519 | && st.st_dev == out_st.st_dev && st.st_ino == out_st.st_ino) | |
2520 | { | |
2521 | errno = 0; | |
2522 | report_file_error ("Input and output files are the same", | |
3b7f6e60 | 2523 | Fcons (file, Fcons (newname, Qnil))); |
3ed15d97 RS |
2524 | } |
2525 | #endif | |
2526 | ||
f73b0ada BF |
2527 | #if defined (S_ISREG) && defined (S_ISLNK) |
2528 | if (input_file_statable_p) | |
2529 | { | |
2530 | if (!(S_ISREG (st.st_mode)) && !(S_ISLNK (st.st_mode))) | |
2531 | { | |
2532 | #if defined (EISDIR) | |
2533 | /* Get a better looking error message. */ | |
2534 | errno = EISDIR; | |
2535 | #endif /* EISDIR */ | |
3b7f6e60 | 2536 | report_file_error ("Non-regular file", Fcons (file, Qnil)); |
f73b0ada BF |
2537 | } |
2538 | } | |
2539 | #endif /* S_ISREG && S_ISLNK */ | |
2540 | ||
570d7624 JB |
2541 | #ifdef VMS |
2542 | /* Create the copy file with the same record format as the input file */ | |
d5db4077 | 2543 | ofd = sys_creat (SDATA (encoded_newname), 0666, ifd); |
570d7624 | 2544 | #else |
4c3c22f3 RS |
2545 | #ifdef MSDOS |
2546 | /* System's default file type was set to binary by _fmode in emacs.c. */ | |
c50f15d0 | 2547 | ofd = emacs_open (SDATA (encoded_newname), |
7fce7dfe | 2548 | O_WRONLY | O_TRUNC | O_CREAT |
795c20df | 2549 | | (NILP (ok_if_already_exists) ? O_EXCL : 0), |
c50f15d0 RS |
2550 | S_IREAD | S_IWRITE); |
2551 | #else /* not MSDOS */ | |
2552 | ofd = emacs_open (SDATA (encoded_newname), | |
2553 | O_WRONLY | O_TRUNC | O_CREAT | |
795c20df | 2554 | | (NILP (ok_if_already_exists) ? O_EXCL : 0), |
c50f15d0 | 2555 | 0666); |
4c3c22f3 | 2556 | #endif /* not MSDOS */ |
570d7624 JB |
2557 | #endif /* VMS */ |
2558 | if (ofd < 0) | |
3ed15d97 | 2559 | report_file_error ("Opening output file", Fcons (newname, Qnil)); |
b5148e85 RS |
2560 | |
2561 | record_unwind_protect (close_file_unwind, make_number (ofd)); | |
570d7624 | 2562 | |
b5148e85 RS |
2563 | immediate_quit = 1; |
2564 | QUIT; | |
68c45bf0 PE |
2565 | while ((n = emacs_read (ifd, buf, sizeof buf)) > 0) |
2566 | if (emacs_write (ofd, buf, n) != n) | |
3ed15d97 | 2567 | report_file_error ("I/O error", Fcons (newname, Qnil)); |
b5148e85 | 2568 | immediate_quit = 0; |
570d7624 | 2569 | |
b016179b EZ |
2570 | #ifndef MSDOS |
2571 | /* Preserve the original file modes, and if requested, also its | |
2572 | owner and group. */ | |
586702ce RS |
2573 | if (input_file_statable_p) |
2574 | { | |
b016179b EZ |
2575 | if (! NILP (preserve_uid_gid)) |
2576 | fchown (ofd, st.st_uid, st.st_gid); | |
586702ce | 2577 | fchmod (ofd, st.st_mode & 07777); |
586702ce | 2578 | } |
b016179b | 2579 | #endif /* not MSDOS */ |
586702ce | 2580 | |
5acac34e | 2581 | /* Closing the output clobbers the file times on some systems. */ |
68c45bf0 | 2582 | if (emacs_close (ofd) < 0) |
5acac34e RS |
2583 | report_file_error ("I/O error", Fcons (newname, Qnil)); |
2584 | ||
f73b0ada | 2585 | if (input_file_statable_p) |
570d7624 | 2586 | { |
8ca6602c | 2587 | if (!NILP (keep_time)) |
570d7624 | 2588 | { |
de5bf5d3 JB |
2589 | EMACS_TIME atime, mtime; |
2590 | EMACS_SET_SECS_USECS (atime, st.st_atime, 0); | |
2591 | EMACS_SET_SECS_USECS (mtime, st.st_mtime, 0); | |
d5db4077 | 2592 | if (set_file_times (SDATA (encoded_newname), |
b1d1b865 | 2593 | atime, mtime)) |
24b1ddad KS |
2594 | xsignal2 (Qfile_date_error, |
2595 | build_string ("Cannot set file date"), newname); | |
570d7624 | 2596 | } |
570d7624 JB |
2597 | } |
2598 | ||
68c45bf0 | 2599 | emacs_close (ifd); |
b016179b EZ |
2600 | |
2601 | #if defined (__DJGPP__) && __DJGPP__ > 1 | |
2602 | if (input_file_statable_p) | |
2603 | { | |
2604 | /* In DJGPP v2.0 and later, fstat usually returns true file mode bits, | |
2605 | and if it can't, it tells so. Otherwise, under MSDOS we usually | |
2606 | get only the READ bit, which will make the copied file read-only, | |
2607 | so it's better not to chmod at all. */ | |
2608 | if ((_djstat_flags & _STFAIL_WRITEBIT) == 0) | |
2609 | chmod (SDATA (encoded_newname), st.st_mode & 07777); | |
2610 | } | |
2611 | #endif /* DJGPP version 2 or newer */ | |
2612 | #endif /* not WINDOWSNT */ | |
5acac34e | 2613 | |
b5148e85 RS |
2614 | /* Discard the unwind protects. */ |
2615 | specpdl_ptr = specpdl + count; | |
2616 | ||
570d7624 JB |
2617 | UNGCPRO; |
2618 | return Qnil; | |
2619 | } | |
385b6cc7 | 2620 | \f |
9bbe01fb | 2621 | DEFUN ("make-directory-internal", Fmake_directory_internal, |
353cfc19 | 2622 | Smake_directory_internal, 1, 1, 0, |
8c1a1077 PJ |
2623 | doc: /* Create a new directory named DIRECTORY. */) |
2624 | (directory) | |
3b7f6e60 | 2625 | Lisp_Object directory; |
570d7624 | 2626 | { |
19290c65 | 2627 | const unsigned char *dir; |
32f4334d | 2628 | Lisp_Object handler; |
b1d1b865 | 2629 | Lisp_Object encoded_dir; |
570d7624 | 2630 | |
b7826503 | 2631 | CHECK_STRING (directory); |
3b7f6e60 | 2632 | directory = Fexpand_file_name (directory, Qnil); |
32f4334d | 2633 | |
3b7f6e60 | 2634 | handler = Ffind_file_name_handler (directory, Qmake_directory_internal); |
32f4334d | 2635 | if (!NILP (handler)) |
3b7f6e60 | 2636 | return call2 (handler, Qmake_directory_internal, directory); |
9bbe01fb | 2637 | |
b1d1b865 RS |
2638 | encoded_dir = ENCODE_FILE (directory); |
2639 | ||
d5db4077 | 2640 | dir = SDATA (encoded_dir); |
570d7624 | 2641 | |
5e570b75 RS |
2642 | #ifdef WINDOWSNT |
2643 | if (mkdir (dir) != 0) | |
2644 | #else | |
570d7624 | 2645 | if (mkdir (dir, 0777) != 0) |
5e570b75 | 2646 | #endif |
a9f2aeae | 2647 | report_file_error ("Creating directory", list1 (directory)); |
570d7624 | 2648 | |
32f4334d | 2649 | return Qnil; |
570d7624 JB |
2650 | } |
2651 | ||
aa734e17 | 2652 | DEFUN ("delete-directory", Fdelete_directory, Sdelete_directory, 1, 1, "FDelete directory: ", |
efdc16c9 | 2653 | doc: /* Delete the directory named DIRECTORY. Does not follow symlinks. */) |
8c1a1077 | 2654 | (directory) |
3b7f6e60 | 2655 | Lisp_Object directory; |
570d7624 | 2656 | { |
19290c65 | 2657 | const unsigned char *dir; |
32f4334d | 2658 | Lisp_Object handler; |
b1d1b865 | 2659 | Lisp_Object encoded_dir; |
570d7624 | 2660 | |
b7826503 | 2661 | CHECK_STRING (directory); |
3b7f6e60 | 2662 | directory = Fdirectory_file_name (Fexpand_file_name (directory, Qnil)); |
570d7624 | 2663 | |
3b7f6e60 | 2664 | handler = Ffind_file_name_handler (directory, Qdelete_directory); |
32f4334d | 2665 | if (!NILP (handler)) |
3b7f6e60 | 2666 | return call2 (handler, Qdelete_directory, directory); |
32f4334d | 2667 | |
b1d1b865 RS |
2668 | encoded_dir = ENCODE_FILE (directory); |
2669 | ||
d5db4077 | 2670 | dir = SDATA (encoded_dir); |
b1d1b865 | 2671 | |
570d7624 | 2672 | if (rmdir (dir) != 0) |
a9f2aeae | 2673 | report_file_error ("Removing directory", list1 (directory)); |
570d7624 JB |
2674 | |
2675 | return Qnil; | |
2676 | } | |
2677 | ||
2678 | DEFUN ("delete-file", Fdelete_file, Sdelete_file, 1, 1, "fDelete file: ", | |
efdc16c9 | 2679 | doc: /* Delete file named FILENAME. If it is a symlink, remove the symlink. |
8c1a1077 PJ |
2680 | If file has multiple names, it continues to exist with the other names. */) |
2681 | (filename) | |
570d7624 JB |
2682 | Lisp_Object filename; |
2683 | { | |
32f4334d | 2684 | Lisp_Object handler; |
b1d1b865 | 2685 | Lisp_Object encoded_file; |
efdc16c9 | 2686 | struct gcpro gcpro1; |
b1d1b865 | 2687 | |
efdc16c9 | 2688 | GCPRO1 (filename); |
b4bd27c5 RS |
2689 | if (!NILP (Ffile_directory_p (filename)) |
2690 | && NILP (Ffile_symlink_p (filename))) | |
24b1ddad KS |
2691 | xsignal2 (Qfile_error, |
2692 | build_string ("Removing old name: is a directory"), | |
2693 | filename); | |
efdc16c9 | 2694 | UNGCPRO; |
570d7624 | 2695 | filename = Fexpand_file_name (filename, Qnil); |
32f4334d | 2696 | |
49307295 | 2697 | handler = Ffind_file_name_handler (filename, Qdelete_file); |
32f4334d | 2698 | if (!NILP (handler)) |
8a9b0da9 | 2699 | return call2 (handler, Qdelete_file, filename); |
32f4334d | 2700 | |
b1d1b865 RS |
2701 | encoded_file = ENCODE_FILE (filename); |
2702 | ||
d5db4077 | 2703 | if (0 > unlink (SDATA (encoded_file))) |
a9f2aeae | 2704 | report_file_error ("Removing old name", list1 (filename)); |
8a9b0da9 | 2705 | return Qnil; |
570d7624 JB |
2706 | } |
2707 | ||
385b6cc7 RS |
2708 | static Lisp_Object |
2709 | internal_delete_file_1 (ignore) | |
2710 | Lisp_Object ignore; | |
2711 | { | |
2712 | return Qt; | |
2713 | } | |
2714 | ||
2715 | /* Delete file FILENAME, returning 1 if successful and 0 if failed. */ | |
2716 | ||
2717 | int | |
2718 | internal_delete_file (filename) | |
2719 | Lisp_Object filename; | |
2720 | { | |
a3911e8c KR |
2721 | Lisp_Object tem; |
2722 | tem = internal_condition_case_1 (Fdelete_file, filename, | |
2723 | Qt, internal_delete_file_1); | |
2724 | return NILP (tem); | |
385b6cc7 RS |
2725 | } |
2726 | \f | |
570d7624 | 2727 | DEFUN ("rename-file", Frename_file, Srename_file, 2, 3, |
7c0f6118 | 2728 | "fRename file: \nGRename %s to file: \np", |
a4e03fe5 | 2729 | doc: /* Rename FILE as NEWNAME. Both args must be strings. |
8c1a1077 PJ |
2730 | If file has names other than FILE, it continues to have those names. |
2731 | Signals a `file-already-exists' error if a file NEWNAME already exists | |
2732 | unless optional third argument OK-IF-ALREADY-EXISTS is non-nil. | |
2733 | A number as third arg means request confirmation if NEWNAME already exists. | |
2734 | This is what happens in interactive use with M-x. */) | |
2735 | (file, newname, ok_if_already_exists) | |
3b7f6e60 | 2736 | Lisp_Object file, newname, ok_if_already_exists; |
570d7624 | 2737 | { |
32f4334d | 2738 | Lisp_Object handler; |
f72b5416 JD |
2739 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5; |
2740 | Lisp_Object encoded_file, encoded_newname, symlink_target; | |
570d7624 | 2741 | |
f72b5416 JD |
2742 | symlink_target = encoded_file = encoded_newname = Qnil; |
2743 | GCPRO5 (file, newname, encoded_file, encoded_newname, symlink_target); | |
b7826503 PJ |
2744 | CHECK_STRING (file); |
2745 | CHECK_STRING (newname); | |
3b7f6e60 | 2746 | file = Fexpand_file_name (file, Qnil); |
1ffc5c90 | 2747 | |
f83caf70 EZ |
2748 | if ((!NILP (Ffile_directory_p (newname))) |
2749 | #ifdef DOS_NT | |
2750 | /* If the file names are identical but for the case, | |
2751 | don't attempt to move directory to itself. */ | |
2752 | && (NILP (Fstring_equal (Fdowncase (file), Fdowncase (newname)))) | |
2753 | #endif | |
2754 | ) | |
1ffc5c90 RS |
2755 | newname = Fexpand_file_name (Ffile_name_nondirectory (file), newname); |
2756 | else | |
2757 | newname = Fexpand_file_name (newname, Qnil); | |
32f4334d RS |
2758 | |
2759 | /* If the file name has special constructs in it, | |
2760 | call the corresponding file handler. */ | |
3b7f6e60 | 2761 | handler = Ffind_file_name_handler (file, Qrename_file); |
51cf6d37 | 2762 | if (NILP (handler)) |
49307295 | 2763 | handler = Ffind_file_name_handler (newname, Qrename_file); |
32f4334d | 2764 | if (!NILP (handler)) |
36712b0a | 2765 | RETURN_UNGCPRO (call4 (handler, Qrename_file, |
3b7f6e60 | 2766 | file, newname, ok_if_already_exists)); |
32f4334d | 2767 | |
b1d1b865 RS |
2768 | encoded_file = ENCODE_FILE (file); |
2769 | encoded_newname = ENCODE_FILE (newname); | |
2770 | ||
bc77278f EZ |
2771 | #ifdef DOS_NT |
2772 | /* If the file names are identical but for the case, don't ask for | |
2773 | confirmation: they simply want to change the letter-case of the | |
2774 | file name. */ | |
2775 | if (NILP (Fstring_equal (Fdowncase (file), Fdowncase (newname)))) | |
2776 | #endif | |
265a9e55 | 2777 | if (NILP (ok_if_already_exists) |
93c30b5f | 2778 | || INTEGERP (ok_if_already_exists)) |
2f868094 | 2779 | barf_or_query_if_file_exists (newname, "rename to it", |
b8b29dc9 | 2780 | INTEGERP (ok_if_already_exists), 0, 0); |
570d7624 | 2781 | #ifndef BSD4_1 |
d5db4077 | 2782 | if (0 > rename (SDATA (encoded_file), SDATA (encoded_newname))) |
570d7624 | 2783 | #else |
d5db4077 KR |
2784 | if (0 > link (SDATA (encoded_file), SDATA (encoded_newname)) |
2785 | || 0 > unlink (SDATA (encoded_file))) | |
570d7624 JB |
2786 | #endif |
2787 | { | |
2788 | if (errno == EXDEV) | |
2789 | { | |
440c7d00 | 2790 | #ifdef S_IFLNK |
f72b5416 | 2791 | symlink_target = Ffile_symlink_p (file); |
440c7d00 JD |
2792 | if (! NILP (symlink_target)) |
2793 | Fmake_symbolic_link (symlink_target, newname, | |
f59abab9 | 2794 | NILP (ok_if_already_exists) ? Qnil : Qt); |
440c7d00 JD |
2795 | else |
2796 | #endif | |
586702ce RS |
2797 | Fcopy_file (file, newname, |
2798 | /* We have already prompted if it was an integer, | |
2799 | so don't have copy-file prompt again. */ | |
2800 | NILP (ok_if_already_exists) ? Qnil : Qt, | |
795c20df | 2801 | Qt, Qt); |
d550c425 | 2802 | |
3b7f6e60 | 2803 | Fdelete_file (file); |
570d7624 JB |
2804 | } |
2805 | else | |
a9f2aeae | 2806 | report_file_error ("Renaming", list2 (file, newname)); |
570d7624 JB |
2807 | } |
2808 | UNGCPRO; | |
2809 | return Qnil; | |
2810 | } | |
2811 | ||
2812 | DEFUN ("add-name-to-file", Fadd_name_to_file, Sadd_name_to_file, 2, 3, | |
7c0f6118 | 2813 | "fAdd name to file: \nGName to add to %s: \np", |
a4e03fe5 | 2814 | doc: /* Give FILE additional name NEWNAME. Both args must be strings. |
8c1a1077 PJ |
2815 | Signals a `file-already-exists' error if a file NEWNAME already exists |
2816 | unless optional third argument OK-IF-ALREADY-EXISTS is non-nil. | |
2817 | A number as third arg means request confirmation if NEWNAME already exists. | |
2818 | This is what happens in interactive use with M-x. */) | |
2819 | (file, newname, ok_if_already_exists) | |
3b7f6e60 | 2820 | Lisp_Object file, newname, ok_if_already_exists; |
570d7624 | 2821 | { |
32f4334d | 2822 | Lisp_Object handler; |
b1d1b865 RS |
2823 | Lisp_Object encoded_file, encoded_newname; |
2824 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; | |
570d7624 | 2825 | |
b1d1b865 RS |
2826 | GCPRO4 (file, newname, encoded_file, encoded_newname); |
2827 | encoded_file = encoded_newname = Qnil; | |
b7826503 PJ |
2828 | CHECK_STRING (file); |
2829 | CHECK_STRING (newname); | |
3b7f6e60 | 2830 | file = Fexpand_file_name (file, Qnil); |
1ffc5c90 RS |
2831 | |
2832 | if (!NILP (Ffile_directory_p (newname))) | |
2833 | newname = Fexpand_file_name (Ffile_name_nondirectory (file), newname); | |
2834 | else | |
2835 | newname = Fexpand_file_name (newname, Qnil); | |
32f4334d RS |
2836 | |
2837 | /* If the file name has special constructs in it, | |
2838 | call the corresponding file handler. */ | |
3b7f6e60 | 2839 | handler = Ffind_file_name_handler (file, Qadd_name_to_file); |
32f4334d | 2840 | if (!NILP (handler)) |
3b7f6e60 | 2841 | RETURN_UNGCPRO (call4 (handler, Qadd_name_to_file, file, |
36712b0a | 2842 | newname, ok_if_already_exists)); |
32f4334d | 2843 | |
adc6741c RS |
2844 | /* If the new name has special constructs in it, |
2845 | call the corresponding file handler. */ | |
2846 | handler = Ffind_file_name_handler (newname, Qadd_name_to_file); | |
2847 | if (!NILP (handler)) | |
3b7f6e60 | 2848 | RETURN_UNGCPRO (call4 (handler, Qadd_name_to_file, file, |
adc6741c RS |
2849 | newname, ok_if_already_exists)); |
2850 | ||
b1d1b865 RS |
2851 | encoded_file = ENCODE_FILE (file); |
2852 | encoded_newname = ENCODE_FILE (newname); | |
2853 | ||
265a9e55 | 2854 | if (NILP (ok_if_already_exists) |
93c30b5f | 2855 | || INTEGERP (ok_if_already_exists)) |
2f868094 | 2856 | barf_or_query_if_file_exists (newname, "make it a new name", |
b8b29dc9 | 2857 | INTEGERP (ok_if_already_exists), 0, 0); |
5e570b75 | 2858 | |
d5db4077 KR |
2859 | unlink (SDATA (newname)); |
2860 | if (0 > link (SDATA (encoded_file), SDATA (encoded_newname))) | |
a9f2aeae | 2861 | report_file_error ("Adding new name", list2 (file, newname)); |
570d7624 JB |
2862 | |
2863 | UNGCPRO; | |
2864 | return Qnil; | |
2865 | } | |
2866 | ||
2867 | #ifdef S_IFLNK | |
2868 | DEFUN ("make-symbolic-link", Fmake_symbolic_link, Smake_symbolic_link, 2, 3, | |
7c0f6118 | 2869 | "FMake symbolic link to file: \nGMake symbolic link to file %s: \np", |
68780e2a RS |
2870 | doc: /* Make a symbolic link to FILENAME, named LINKNAME. |
2871 | Both args must be strings. | |
8c1a1077 PJ |
2872 | Signals a `file-already-exists' error if a file LINKNAME already exists |
2873 | unless optional third argument OK-IF-ALREADY-EXISTS is non-nil. | |
2874 | A number as third arg means request confirmation if LINKNAME already exists. | |
2875 | This happens for interactive use with M-x. */) | |
2876 | (filename, linkname, ok_if_already_exists) | |
e5d77022 | 2877 | Lisp_Object filename, linkname, ok_if_already_exists; |
570d7624 | 2878 | { |
32f4334d | 2879 | Lisp_Object handler; |
b1d1b865 RS |
2880 | Lisp_Object encoded_filename, encoded_linkname; |
2881 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; | |
570d7624 | 2882 | |
b1d1b865 RS |
2883 | GCPRO4 (filename, linkname, encoded_filename, encoded_linkname); |
2884 | encoded_filename = encoded_linkname = Qnil; | |
b7826503 PJ |
2885 | CHECK_STRING (filename); |
2886 | CHECK_STRING (linkname); | |
d9bc1c99 RS |
2887 | /* If the link target has a ~, we must expand it to get |
2888 | a truly valid file name. Otherwise, do not expand; | |
2889 | we want to permit links to relative file names. */ | |
d5db4077 | 2890 | if (SREF (filename, 0) == '~') |
d9bc1c99 | 2891 | filename = Fexpand_file_name (filename, Qnil); |
1ffc5c90 RS |
2892 | |
2893 | if (!NILP (Ffile_directory_p (linkname))) | |
dac24db4 | 2894 | linkname = Fexpand_file_name (Ffile_name_nondirectory (filename), linkname); |
1ffc5c90 RS |
2895 | else |
2896 | linkname = Fexpand_file_name (linkname, Qnil); | |
32f4334d RS |
2897 | |
2898 | /* If the file name has special constructs in it, | |
2899 | call the corresponding file handler. */ | |
49307295 | 2900 | handler = Ffind_file_name_handler (filename, Qmake_symbolic_link); |
32f4334d | 2901 | if (!NILP (handler)) |
36712b0a KH |
2902 | RETURN_UNGCPRO (call4 (handler, Qmake_symbolic_link, filename, |
2903 | linkname, ok_if_already_exists)); | |
32f4334d | 2904 | |
adc6741c RS |
2905 | /* If the new link name has special constructs in it, |
2906 | call the corresponding file handler. */ | |
2907 | handler = Ffind_file_name_handler (linkname, Qmake_symbolic_link); | |
2908 | if (!NILP (handler)) | |
2909 | RETURN_UNGCPRO (call4 (handler, Qmake_symbolic_link, filename, | |
2910 | linkname, ok_if_already_exists)); | |
2911 | ||
b1d1b865 RS |
2912 | encoded_filename = ENCODE_FILE (filename); |
2913 | encoded_linkname = ENCODE_FILE (linkname); | |
2914 | ||
265a9e55 | 2915 | if (NILP (ok_if_already_exists) |
93c30b5f | 2916 | || INTEGERP (ok_if_already_exists)) |
2f868094 | 2917 | barf_or_query_if_file_exists (linkname, "make it a link", |
b8b29dc9 | 2918 | INTEGERP (ok_if_already_exists), 0, 0); |
d5db4077 KR |
2919 | if (0 > symlink (SDATA (encoded_filename), |
2920 | SDATA (encoded_linkname))) | |
570d7624 JB |
2921 | { |
2922 | /* If we didn't complain already, silently delete existing file. */ | |
2923 | if (errno == EEXIST) | |
2924 | { | |
d5db4077 KR |
2925 | unlink (SDATA (encoded_linkname)); |
2926 | if (0 <= symlink (SDATA (encoded_filename), | |
2927 | SDATA (encoded_linkname))) | |
1a04498e KH |
2928 | { |
2929 | UNGCPRO; | |
2930 | return Qnil; | |
2931 | } | |
570d7624 JB |
2932 | } |
2933 | ||
a9f2aeae | 2934 | report_file_error ("Making symbolic link", list2 (filename, linkname)); |
570d7624 JB |
2935 | } |
2936 | UNGCPRO; | |
2937 | return Qnil; | |
2938 | } | |
2939 | #endif /* S_IFLNK */ | |
2940 | ||
2941 | #ifdef VMS | |
2942 | ||
2943 | DEFUN ("define-logical-name", Fdefine_logical_name, Sdefine_logical_name, | |
2944 | 2, 2, "sDefine logical name: \nsDefine logical name %s as: ", | |
8c1a1077 PJ |
2945 | doc: /* Define the job-wide logical name NAME to have the value STRING. |
2946 | If STRING is nil or a null string, the logical name NAME is deleted. */) | |
2947 | (name, string) | |
3b7f6e60 | 2948 | Lisp_Object name; |
570d7624 JB |
2949 | Lisp_Object string; |
2950 | { | |
b7826503 | 2951 | CHECK_STRING (name); |
265a9e55 | 2952 | if (NILP (string)) |
d5db4077 | 2953 | delete_logical_name (SDATA (name)); |
570d7624 JB |
2954 | else |
2955 | { | |
b7826503 | 2956 | CHECK_STRING (string); |
570d7624 | 2957 | |
d5db4077 KR |
2958 | if (SCHARS (string) == 0) |
2959 | delete_logical_name (SDATA (name)); | |
570d7624 | 2960 | else |
d5db4077 | 2961 | define_logical_name (SDATA (name), SDATA (string)); |
570d7624 JB |
2962 | } |
2963 | ||
2964 | return string; | |
2965 | } | |
2966 | #endif /* VMS */ | |
2967 | ||
2968 | #ifdef HPUX_NET | |
2969 | ||
2970 | DEFUN ("sysnetunam", Fsysnetunam, Ssysnetunam, 2, 2, 0, | |
8c1a1077 | 2971 | doc: /* Open a network connection to PATH using LOGIN as the login string. */) |
570d7624 JB |
2972 | (path, login) |
2973 | Lisp_Object path, login; | |
2974 | { | |
2975 | int netresult; | |
199607e4 | 2976 | |
b7826503 PJ |
2977 | CHECK_STRING (path); |
2978 | CHECK_STRING (login); | |
199607e4 | 2979 | |
d5db4077 | 2980 | netresult = netunam (SDATA (path), SDATA (login)); |
570d7624 JB |
2981 | |
2982 | if (netresult == -1) | |
2983 | return Qnil; | |
2984 | else | |
2985 | return Qt; | |
2986 | } | |
2987 | #endif /* HPUX_NET */ | |
2988 | \f | |
2989 | DEFUN ("file-name-absolute-p", Ffile_name_absolute_p, Sfile_name_absolute_p, | |
2990 | 1, 1, 0, | |
8c1a1077 PJ |
2991 | doc: /* Return t if file FILENAME specifies an absolute file name. |
2992 | On Unix, this is a name starting with a `/' or a `~'. */) | |
570d7624 JB |
2993 | (filename) |
2994 | Lisp_Object filename; | |
2995 | { | |
b7826503 | 2996 | CHECK_STRING (filename); |
c70a4df6 | 2997 | return file_name_absolute_p (SDATA (filename)) ? Qt : Qnil; |
570d7624 | 2998 | } |
3beeedfe RS |
2999 | \f |
3000 | /* Return nonzero if file FILENAME exists and can be executed. */ | |
3001 | ||
3002 | static int | |
3003 | check_executable (filename) | |
3004 | char *filename; | |
3005 | { | |
3be3c08e RS |
3006 | #ifdef DOS_NT |
3007 | int len = strlen (filename); | |
3008 | char *suffix; | |
3009 | struct stat st; | |
3010 | if (stat (filename, &st) < 0) | |
3011 | return 0; | |
34ead71a | 3012 | #if defined (WINDOWSNT) || (defined (MSDOS) && __DJGPP__ > 1) |
199607e4 RS |
3013 | return ((st.st_mode & S_IEXEC) != 0); |
3014 | #else | |
3be3c08e RS |
3015 | return (S_ISREG (st.st_mode) |
3016 | && len >= 5 | |
3017 | && (stricmp ((suffix = filename + len-4), ".com") == 0 | |
3018 | || stricmp (suffix, ".exe") == 0 | |
2dc3be7e RS |
3019 | || stricmp (suffix, ".bat") == 0) |
3020 | || (st.st_mode & S_IFMT) == S_IFDIR); | |
199607e4 | 3021 | #endif /* not WINDOWSNT */ |
3be3c08e | 3022 | #else /* not DOS_NT */ |
de0be7dd RS |
3023 | #ifdef HAVE_EUIDACCESS |
3024 | return (euidaccess (filename, 1) >= 0); | |
3beeedfe RS |
3025 | #else |
3026 | /* Access isn't quite right because it uses the real uid | |
3027 | and we really want to test with the effective uid. | |
3028 | But Unix doesn't give us a right way to do it. */ | |
3029 | return (access (filename, 1) >= 0); | |
3030 | #endif | |
3be3c08e | 3031 | #endif /* not DOS_NT */ |
3beeedfe RS |
3032 | } |
3033 | ||
3034 | /* Return nonzero if file FILENAME exists and can be written. */ | |
3035 | ||
3036 | static int | |
3037 | check_writable (filename) | |
3038 | char *filename; | |
3039 | { | |
3be3c08e RS |
3040 | #ifdef MSDOS |
3041 | struct stat st; | |
3042 | if (stat (filename, &st) < 0) | |
3043 | return 0; | |
3044 | return (st.st_mode & S_IWRITE || (st.st_mode & S_IFMT) == S_IFDIR); | |
3045 | #else /* not MSDOS */ | |
41f3fb38 KH |
3046 | #ifdef HAVE_EUIDACCESS |
3047 | return (euidaccess (filename, 2) >= 0); | |
3beeedfe RS |
3048 | #else |
3049 | /* Access isn't quite right because it uses the real uid | |
3050 | and we really want to test with the effective uid. | |
3051 | But Unix doesn't give us a right way to do it. | |
3052 | Opening with O_WRONLY could work for an ordinary file, | |
3053 | but would lose for directories. */ | |
3054 | return (access (filename, 2) >= 0); | |
3055 | #endif | |
3be3c08e | 3056 | #endif /* not MSDOS */ |
3beeedfe | 3057 | } |
570d7624 JB |
3058 | |
3059 | DEFUN ("file-exists-p", Ffile_exists_p, Sfile_exists_p, 1, 1, 0, | |
68780e2a RS |
3060 | doc: /* Return t if file FILENAME exists (whether or not you can read it.) |
3061 | See also `file-readable-p' and `file-attributes'. | |
3062 | This returns nil for a symlink to a nonexistent file. | |
3063 | Use `file-symlink-p' to test for such links. */) | |
8c1a1077 | 3064 | (filename) |
570d7624 JB |
3065 | Lisp_Object filename; |
3066 | { | |
199607e4 | 3067 | Lisp_Object absname; |
32f4334d | 3068 | Lisp_Object handler; |
4018b5ef | 3069 | struct stat statbuf; |
570d7624 | 3070 | |
b7826503 | 3071 | CHECK_STRING (filename); |
199607e4 | 3072 | absname = Fexpand_file_name (filename, Qnil); |
32f4334d RS |
3073 | |
3074 | /* If the file name has special constructs in it, | |
3075 | call the corresponding file handler. */ | |
199607e4 | 3076 | handler = Ffind_file_name_handler (absname, Qfile_exists_p); |
32f4334d | 3077 | if (!NILP (handler)) |
199607e4 | 3078 | return call2 (handler, Qfile_exists_p, absname); |
32f4334d | 3079 | |
b1d1b865 RS |
3080 | absname = ENCODE_FILE (absname); |
3081 | ||
d5db4077 | 3082 | return (stat (SDATA (absname), &statbuf) >= 0) ? Qt : Qnil; |
570d7624 JB |
3083 | } |
3084 | ||
3085 | DEFUN ("file-executable-p", Ffile_executable_p, Sfile_executable_p, 1, 1, 0, | |
8c1a1077 PJ |
3086 | doc: /* Return t if FILENAME can be executed by you. |
3087 | For a directory, this means you can access files in that directory. */) | |
3088 | (filename) | |
3089 | Lisp_Object filename; | |
570d7624 | 3090 | { |
199607e4 | 3091 | Lisp_Object absname; |
32f4334d | 3092 | Lisp_Object handler; |
570d7624 | 3093 | |
b7826503 | 3094 | CHECK_STRING (filename); |
199607e4 | 3095 | absname = Fexpand_file_name (filename, Qnil); |
32f4334d RS |
3096 | |
3097 | /* If the file name has special constructs in it, | |
3098 | call the corresponding file handler. */ | |
199607e4 | 3099 | handler = Ffind_file_name_handler (absname, Qfile_executable_p); |
32f4334d | 3100 | if (!NILP (handler)) |
199607e4 | 3101 | return call2 (handler, Qfile_executable_p, absname); |
32f4334d | 3102 | |
b1d1b865 RS |
3103 | absname = ENCODE_FILE (absname); |
3104 | ||
d5db4077 | 3105 | return (check_executable (SDATA (absname)) ? Qt : Qnil); |
570d7624 JB |
3106 | } |
3107 | ||
3108 | DEFUN ("file-readable-p", Ffile_readable_p, Sfile_readable_p, 1, 1, 0, | |
8c1a1077 PJ |
3109 | doc: /* Return t if file FILENAME exists and you can read it. |
3110 | See also `file-exists-p' and `file-attributes'. */) | |
3111 | (filename) | |
570d7624 JB |
3112 | Lisp_Object filename; |
3113 | { | |
199607e4 | 3114 | Lisp_Object absname; |
32f4334d | 3115 | Lisp_Object handler; |
4018b5ef | 3116 | int desc; |
bb369dc6 RS |
3117 | int flags; |
3118 | struct stat statbuf; | |
570d7624 | 3119 | |
b7826503 | 3120 | CHECK_STRING (filename); |
199607e4 | 3121 | absname = Fexpand_file_name (filename, Qnil); |
32f4334d RS |
3122 | |
3123 | /* If the file name has special constructs in it, | |
3124 | call the corresponding file handler. */ | |
199607e4 | 3125 | handler = Ffind_file_name_handler (absname, Qfile_readable_p); |
32f4334d | 3126 | if (!NILP (handler)) |
199607e4 | 3127 | return call2 (handler, Qfile_readable_p, absname); |
32f4334d | 3128 | |
b1d1b865 RS |
3129 | absname = ENCODE_FILE (absname); |
3130 | ||
fb4c6c96 AC |
3131 | #if defined(DOS_NT) || defined(macintosh) |
3132 | /* Under MS-DOS, Windows, and Macintosh, open does not work for | |
3133 | directories. */ | |
d5db4077 | 3134 | if (access (SDATA (absname), 0) == 0) |
a8a7d065 RS |
3135 | return Qt; |
3136 | return Qnil; | |
fb4c6c96 | 3137 | #else /* not DOS_NT and not macintosh */ |
bb369dc6 RS |
3138 | flags = O_RDONLY; |
3139 | #if defined (S_ISFIFO) && defined (O_NONBLOCK) | |
3140 | /* Opening a fifo without O_NONBLOCK can wait. | |
3141 | We don't want to wait. But we don't want to mess wth O_NONBLOCK | |
3142 | except in the case of a fifo, on a system which handles it. */ | |
d5db4077 | 3143 | desc = stat (SDATA (absname), &statbuf); |
bb369dc6 RS |
3144 | if (desc < 0) |
3145 | return Qnil; | |
3146 | if (S_ISFIFO (statbuf.st_mode)) | |
3147 | flags |= O_NONBLOCK; | |
3148 | #endif | |
d5db4077 | 3149 | desc = emacs_open (SDATA (absname), flags, 0); |
4018b5ef RS |
3150 | if (desc < 0) |
3151 | return Qnil; | |
68c45bf0 | 3152 | emacs_close (desc); |
4018b5ef | 3153 | return Qt; |
fb4c6c96 | 3154 | #endif /* not DOS_NT and not macintosh */ |
570d7624 JB |
3155 | } |
3156 | ||
f793dc6c RS |
3157 | /* Having this before file-symlink-p mysteriously caused it to be forgotten |
3158 | on the RT/PC. */ | |
3159 | DEFUN ("file-writable-p", Ffile_writable_p, Sfile_writable_p, 1, 1, 0, | |
8c1a1077 PJ |
3160 | doc: /* Return t if file FILENAME can be written or created by you. */) |
3161 | (filename) | |
f793dc6c RS |
3162 | Lisp_Object filename; |
3163 | { | |
b1d1b865 | 3164 | Lisp_Object absname, dir, encoded; |
f793dc6c RS |
3165 | Lisp_Object handler; |
3166 | struct stat statbuf; | |
3167 | ||
b7826503 | 3168 | CHECK_STRING (filename); |
199607e4 | 3169 | absname = Fexpand_file_name (filename, Qnil); |
f793dc6c RS |
3170 | |
3171 | /* If the file name has special constructs in it, | |
3172 | call the corresponding file handler. */ | |
199607e4 | 3173 | handler = Ffind_file_name_handler (absname, Qfile_writable_p); |
f793dc6c | 3174 | if (!NILP (handler)) |
199607e4 | 3175 | return call2 (handler, Qfile_writable_p, absname); |
f793dc6c | 3176 | |
b1d1b865 | 3177 | encoded = ENCODE_FILE (absname); |
d5db4077 KR |
3178 | if (stat (SDATA (encoded), &statbuf) >= 0) |
3179 | return (check_writable (SDATA (encoded)) | |
f793dc6c | 3180 | ? Qt : Qnil); |
b1d1b865 | 3181 | |
199607e4 | 3182 | dir = Ffile_name_directory (absname); |
f793dc6c RS |
3183 | #ifdef VMS |
3184 | if (!NILP (dir)) | |
3185 | dir = Fdirectory_file_name (dir); | |
3186 | #endif /* VMS */ | |
3187 | #ifdef MSDOS | |
3188 | if (!NILP (dir)) | |
3189 | dir = Fdirectory_file_name (dir); | |
3190 | #endif /* MSDOS */ | |
b1d1b865 RS |
3191 | |
3192 | dir = ENCODE_FILE (dir); | |
e3e8a75a GM |
3193 | #ifdef WINDOWSNT |
3194 | /* The read-only attribute of the parent directory doesn't affect | |
3195 | whether a file or directory can be created within it. Some day we | |
3196 | should check ACLs though, which do affect this. */ | |
d5db4077 | 3197 | if (stat (SDATA (dir), &statbuf) < 0) |
e3e8a75a GM |
3198 | return Qnil; |
3199 | return (statbuf.st_mode & S_IFMT) == S_IFDIR ? Qt : Qnil; | |
3200 | #else | |
d5db4077 | 3201 | return (check_writable (!NILP (dir) ? (char *) SDATA (dir) : "") |
f793dc6c | 3202 | ? Qt : Qnil); |
e3e8a75a | 3203 | #endif |
f793dc6c RS |
3204 | } |
3205 | \f | |
1f8653eb | 3206 | DEFUN ("access-file", Faccess_file, Saccess_file, 2, 2, 0, |
8c1a1077 PJ |
3207 | doc: /* Access file FILENAME, and get an error if that does not work. |
3208 | The second argument STRING is used in the error message. | |
a4e03fe5 | 3209 | If there is no error, returns nil. */) |
8c1a1077 | 3210 | (filename, string) |
1f8653eb RS |
3211 | Lisp_Object filename, string; |
3212 | { | |
49475635 | 3213 | Lisp_Object handler, encoded_filename, absname; |
1f8653eb RS |
3214 | int fd; |
3215 | ||
b7826503 | 3216 | CHECK_STRING (filename); |
49475635 EZ |
3217 | absname = Fexpand_file_name (filename, Qnil); |
3218 | ||
b7826503 | 3219 | CHECK_STRING (string); |
1f8653eb RS |
3220 | |
3221 | /* If the file name has special constructs in it, | |
3222 | call the corresponding file handler. */ | |
49475635 | 3223 | handler = Ffind_file_name_handler (absname, Qaccess_file); |
1f8653eb | 3224 | if (!NILP (handler)) |
49475635 | 3225 | return call3 (handler, Qaccess_file, absname, string); |
1f8653eb | 3226 | |
49475635 | 3227 | encoded_filename = ENCODE_FILE (absname); |
b1d1b865 | 3228 | |
d5db4077 | 3229 | fd = emacs_open (SDATA (encoded_filename), O_RDONLY, 0); |
1f8653eb | 3230 | if (fd < 0) |
d5db4077 | 3231 | report_file_error (SDATA (string), Fcons (filename, Qnil)); |
68c45bf0 | 3232 | emacs_close (fd); |
1f8653eb RS |
3233 | |
3234 | return Qnil; | |
3235 | } | |
3236 | \f | |
570d7624 | 3237 | DEFUN ("file-symlink-p", Ffile_symlink_p, Sfile_symlink_p, 1, 1, 0, |
8c1a1077 | 3238 | doc: /* Return non-nil if file FILENAME is the name of a symbolic link. |
1c353c74 | 3239 | The value is the link target, as a string. |
68780e2a RS |
3240 | Otherwise it returns nil. |
3241 | ||
3242 | This function returns t when given the name of a symlink that | |
3243 | points to a nonexistent file. */) | |
8c1a1077 | 3244 | (filename) |
570d7624 JB |
3245 | Lisp_Object filename; |
3246 | { | |
32f4334d | 3247 | Lisp_Object handler; |
570d7624 | 3248 | |
b7826503 | 3249 | CHECK_STRING (filename); |
570d7624 JB |
3250 | filename = Fexpand_file_name (filename, Qnil); |
3251 | ||
32f4334d RS |
3252 | /* If the file name has special constructs in it, |
3253 | call the corresponding file handler. */ | |
49307295 | 3254 | handler = Ffind_file_name_handler (filename, Qfile_symlink_p); |
32f4334d RS |
3255 | if (!NILP (handler)) |
3256 | return call2 (handler, Qfile_symlink_p, filename); | |
3257 | ||
5adcec23 JR |
3258 | #ifdef S_IFLNK |
3259 | { | |
3260 | char *buf; | |
3261 | int bufsize; | |
3262 | int valsize; | |
3263 | Lisp_Object val; | |
3264 | ||
b1d1b865 RS |
3265 | filename = ENCODE_FILE (filename); |
3266 | ||
81c3310d GM |
3267 | bufsize = 50; |
3268 | buf = NULL; | |
3269 | do | |
570d7624 | 3270 | { |
81c3310d GM |
3271 | bufsize *= 2; |
3272 | buf = (char *) xrealloc (buf, bufsize); | |
570d7624 | 3273 | bzero (buf, bufsize); |
efdc16c9 | 3274 | |
81c3310d | 3275 | errno = 0; |
d5db4077 | 3276 | valsize = readlink (SDATA (filename), buf, bufsize); |
bcdd93b3 GM |
3277 | if (valsize == -1) |
3278 | { | |
81c3310d GM |
3279 | #ifdef ERANGE |
3280 | /* HP-UX reports ERANGE if buffer is too small. */ | |
bcdd93b3 GM |
3281 | if (errno == ERANGE) |
3282 | valsize = bufsize; | |
3283 | else | |
81c3310d | 3284 | #endif |
bcdd93b3 GM |
3285 | { |
3286 | xfree (buf); | |
3287 | return Qnil; | |
3288 | } | |
81c3310d | 3289 | } |
570d7624 | 3290 | } |
81c3310d | 3291 | while (valsize >= bufsize); |
efdc16c9 | 3292 | |
570d7624 | 3293 | val = make_string (buf, valsize); |
69ac1891 GM |
3294 | if (buf[0] == '/' && index (buf, ':')) |
3295 | val = concat2 (build_string ("/:"), val); | |
9ac0d9e0 | 3296 | xfree (buf); |
cd913586 KH |
3297 | val = DECODE_FILE (val); |
3298 | return val; | |
5adcec23 | 3299 | } |
570d7624 JB |
3300 | #else /* not S_IFLNK */ |
3301 | return Qnil; | |
3302 | #endif /* not S_IFLNK */ | |
3303 | } | |
3304 | ||
570d7624 | 3305 | DEFUN ("file-directory-p", Ffile_directory_p, Sfile_directory_p, 1, 1, 0, |
8c1a1077 PJ |
3306 | doc: /* Return t if FILENAME names an existing directory. |
3307 | Symbolic links to directories count as directories. | |
3308 | See `file-symlink-p' to distinguish symlinks. */) | |
3309 | (filename) | |
570d7624 JB |
3310 | Lisp_Object filename; |
3311 | { | |
199607e4 | 3312 | register Lisp_Object absname; |
570d7624 | 3313 | struct stat st; |
32f4334d | 3314 | Lisp_Object handler; |
570d7624 | 3315 | |
199607e4 | 3316 | absname = expand_and_dir_to_file (filename, current_buffer->directory); |
570d7624 | 3317 | |
32f4334d RS |
3318 | /* If the file name has special constructs in it, |
3319 | call the corresponding file handler. */ | |
199607e4 | 3320 | handler = Ffind_file_name_handler (absname, Qfile_directory_p); |
32f4334d | 3321 | if (!NILP (handler)) |
199607e4 | 3322 | return call2 (handler, Qfile_directory_p, absname); |
32f4334d | 3323 | |
b1d1b865 RS |
3324 | absname = ENCODE_FILE (absname); |
3325 | ||
d5db4077 | 3326 | if (stat (SDATA (absname), &st) < 0) |
570d7624 JB |
3327 | return Qnil; |
3328 | return (st.st_mode & S_IFMT) == S_IFDIR ? Qt : Qnil; | |
3329 | } | |
3330 | ||
b72dea2a | 3331 | DEFUN ("file-accessible-directory-p", Ffile_accessible_directory_p, Sfile_accessible_directory_p, 1, 1, 0, |
e385ec41 RS |
3332 | doc: /* Return t if file FILENAME names a directory you can open. |
3333 | For the value to be t, FILENAME must specify the name of a directory as a file, | |
3334 | and the directory must allow you to open files in it. In order to use a | |
8c1a1077 PJ |
3335 | directory as a buffer's current directory, this predicate must return true. |
3336 | A directory name spec may be given instead; then the value is t | |
3337 | if the directory so specified exists and really is a readable and | |
3338 | searchable directory. */) | |
3339 | (filename) | |
b72dea2a JB |
3340 | Lisp_Object filename; |
3341 | { | |
32f4334d | 3342 | Lisp_Object handler; |
1a04498e | 3343 | int tem; |
d26859eb | 3344 | struct gcpro gcpro1; |
32f4334d RS |
3345 | |
3346 | /* If the file name has special constructs in it, | |
3347 | call the corresponding file handler. */ | |
49307295 | 3348 | handler = Ffind_file_name_handler (filename, Qfile_accessible_directory_p); |
32f4334d RS |
3349 | if (!NILP (handler)) |
3350 | return call2 (handler, Qfile_accessible_directory_p, filename); | |
3351 | ||
d26859eb | 3352 | GCPRO1 (filename); |
1a04498e KH |
3353 | tem = (NILP (Ffile_directory_p (filename)) |
3354 | || NILP (Ffile_executable_p (filename))); | |
d26859eb | 3355 | UNGCPRO; |
1a04498e | 3356 | return tem ? Qnil : Qt; |
b72dea2a JB |
3357 | } |
3358 | ||
f793dc6c | 3359 | DEFUN ("file-regular-p", Ffile_regular_p, Sfile_regular_p, 1, 1, 0, |
19a9c3b7 LH |
3360 | doc: /* Return t if FILENAME names a regular file. |
3361 | This is the sort of file that holds an ordinary stream of data bytes. | |
3362 | Symbolic links to regular files count as regular files. | |
3363 | See `file-symlink-p' to distinguish symlinks. */) | |
8c1a1077 | 3364 | (filename) |
f793dc6c RS |
3365 | Lisp_Object filename; |
3366 | { | |
199607e4 | 3367 | register Lisp_Object absname; |
f793dc6c RS |
3368 | struct stat st; |
3369 | Lisp_Object handler; | |
3370 | ||
199607e4 | 3371 | absname = expand_and_dir_to_file (filename, current_buffer->directory); |
f793dc6c RS |
3372 | |
3373 | /* If the file name has special constructs in it, | |
3374 | call the corresponding file handler. */ | |
199607e4 | 3375 | handler = Ffind_file_name_handler (absname, Qfile_regular_p); |
f793dc6c | 3376 | if (!NILP (handler)) |
199607e4 | 3377 | return call2 (handler, Qfile_regular_p, absname); |
f793dc6c | 3378 | |
b1d1b865 RS |
3379 | absname = ENCODE_FILE (absname); |
3380 | ||
c1c4693e RS |
3381 | #ifdef WINDOWSNT |
3382 | { | |
3383 | int result; | |
3384 | Lisp_Object tem = Vw32_get_true_file_attributes; | |
3385 | ||
3386 | /* Tell stat to use expensive method to get accurate info. */ | |
3387 | Vw32_get_true_file_attributes = Qt; | |
d5db4077 | 3388 | result = stat (SDATA (absname), &st); |
c1c4693e RS |
3389 | Vw32_get_true_file_attributes = tem; |
3390 | ||
3391 | if (result < 0) | |
3392 | return Qnil; | |
3393 | return (st.st_mode & S_IFMT) == S_IFREG ? Qt : Qnil; | |
3394 | } | |
3395 | #else | |
d5db4077 | 3396 | if (stat (SDATA (absname), &st) < 0) |
f793dc6c RS |
3397 | return Qnil; |
3398 | return (st.st_mode & S_IFMT) == S_IFREG ? Qt : Qnil; | |
c1c4693e | 3399 | #endif |
f793dc6c RS |
3400 | } |
3401 | \f | |
570d7624 | 3402 | DEFUN ("file-modes", Ffile_modes, Sfile_modes, 1, 1, 0, |
d4a42098 KS |
3403 | doc: /* Return mode bits of file named FILENAME, as an integer. |
3404 | Return nil, if file does not exist or is not accessible. */) | |
8c1a1077 | 3405 | (filename) |
570d7624 JB |
3406 | Lisp_Object filename; |
3407 | { | |
199607e4 | 3408 | Lisp_Object absname; |
570d7624 | 3409 | struct stat st; |
32f4334d | 3410 | Lisp_Object handler; |
570d7624 | 3411 | |
199607e4 | 3412 | absname = expand_and_dir_to_file (filename, current_buffer->directory); |
570d7624 | 3413 | |
32f4334d RS |
3414 | /* If the file name has special constructs in it, |
3415 | call the corresponding file handler. */ | |
199607e4 | 3416 | handler = Ffind_file_name_handler (absname, Qfile_modes); |
32f4334d | 3417 | if (!NILP (handler)) |
199607e4 | 3418 | return call2 (handler, Qfile_modes, absname); |
32f4334d | 3419 | |
b1d1b865 RS |
3420 | absname = ENCODE_FILE (absname); |
3421 | ||
d5db4077 | 3422 | if (stat (SDATA (absname), &st) < 0) |
570d7624 | 3423 | return Qnil; |
34ead71a | 3424 | #if defined (MSDOS) && __DJGPP__ < 2 |
d5db4077 | 3425 | if (check_executable (SDATA (absname))) |
3be3c08e | 3426 | st.st_mode |= S_IEXEC; |
34ead71a | 3427 | #endif /* MSDOS && __DJGPP__ < 2 */ |
3ace87e3 | 3428 | |
570d7624 JB |
3429 | return make_number (st.st_mode & 07777); |
3430 | } | |
3431 | ||
09fbdf6c MC |
3432 | DEFUN ("set-file-modes", Fset_file_modes, Sset_file_modes, 2, 2, |
3433 | "(let ((file (read-file-name \"File: \"))) \ | |
3434 | (list file (read-file-modes nil file)))", | |
8c1a1077 PJ |
3435 | doc: /* Set mode bits of file named FILENAME to MODE (an integer). |
3436 | Only the 12 low bits of MODE are used. */) | |
570d7624 JB |
3437 | (filename, mode) |
3438 | Lisp_Object filename, mode; | |
3439 | { | |
b1d1b865 | 3440 | Lisp_Object absname, encoded_absname; |
32f4334d | 3441 | Lisp_Object handler; |
570d7624 | 3442 | |
199607e4 | 3443 | absname = Fexpand_file_name (filename, current_buffer->directory); |
b7826503 | 3444 | CHECK_NUMBER (mode); |
570d7624 | 3445 | |
32f4334d RS |
3446 | /* If the file name has special constructs in it, |
3447 | call the corresponding file handler. */ | |
199607e4 | 3448 | handler = Ffind_file_name_handler (absname, Qset_file_modes); |
32f4334d | 3449 | if (!NILP (handler)) |
199607e4 | 3450 | return call3 (handler, Qset_file_modes, absname, mode); |
32f4334d | 3451 | |
b1d1b865 RS |
3452 | encoded_absname = ENCODE_FILE (absname); |
3453 | ||
d5db4077 | 3454 | if (chmod (SDATA (encoded_absname), XINT (mode)) < 0) |
199607e4 | 3455 | report_file_error ("Doing chmod", Fcons (absname, Qnil)); |
570d7624 JB |
3456 | |
3457 | return Qnil; | |
3458 | } | |
3459 | ||
c24e9a53 | 3460 | DEFUN ("set-default-file-modes", Fset_default_file_modes, Sset_default_file_modes, 1, 1, 0, |
8c1a1077 PJ |
3461 | doc: /* Set the file permission bits for newly created files. |
3462 | The argument MODE should be an integer; only the low 9 bits are used. | |
3463 | This setting is inherited by subprocesses. */) | |
3464 | (mode) | |
5f85ea58 | 3465 | Lisp_Object mode; |
36a8c287 | 3466 | { |
b7826503 | 3467 | CHECK_NUMBER (mode); |
199607e4 | 3468 | |
5f85ea58 | 3469 | umask ((~ XINT (mode)) & 0777); |
36a8c287 JB |
3470 | |
3471 | return Qnil; | |
3472 | } | |
3473 | ||
c24e9a53 | 3474 | DEFUN ("default-file-modes", Fdefault_file_modes, Sdefault_file_modes, 0, 0, 0, |
8c1a1077 PJ |
3475 | doc: /* Return the default file protection for created files. |
3476 | The value is an integer. */) | |
3477 | () | |
36a8c287 | 3478 | { |
5f85ea58 RS |
3479 | int realmask; |
3480 | Lisp_Object value; | |
36a8c287 | 3481 | |
5f85ea58 RS |
3482 | realmask = umask (0); |
3483 | umask (realmask); | |
36a8c287 | 3484 | |
46283abe | 3485 | XSETINT (value, (~ realmask) & 0777); |
5f85ea58 | 3486 | return value; |
36a8c287 | 3487 | } |
819da85b EZ |
3488 | \f |
3489 | extern int lisp_time_argument P_ ((Lisp_Object, time_t *, int *)); | |
3490 | ||
3491 | DEFUN ("set-file-times", Fset_file_times, Sset_file_times, 1, 2, 0, | |
3492 | doc: /* Set times of file FILENAME to TIME. | |
3493 | Set both access and modification times. | |
3494 | Return t on success, else nil. | |
3495 | Use the current time if TIME is nil. TIME is in the format of | |
3496 | `current-time'. */) | |
3497 | (filename, time) | |
3498 | Lisp_Object filename, time; | |
3499 | { | |
3500 | Lisp_Object absname, encoded_absname; | |
3501 | Lisp_Object handler; | |
3502 | time_t sec; | |
3503 | int usec; | |
3504 | ||
3505 | if (! lisp_time_argument (time, &sec, &usec)) | |
3506 | error ("Invalid time specification"); | |
3507 | ||
3508 | absname = Fexpand_file_name (filename, current_buffer->directory); | |
3509 | ||
3510 | /* If the file name has special constructs in it, | |
3511 | call the corresponding file handler. */ | |
3512 | handler = Ffind_file_name_handler (absname, Qset_file_times); | |
3513 | if (!NILP (handler)) | |
3514 | return call3 (handler, Qset_file_times, absname, time); | |
3515 | ||
3516 | encoded_absname = ENCODE_FILE (absname); | |
5df5e07c | 3517 | |
819da85b EZ |
3518 | { |
3519 | EMACS_TIME t; | |
3520 | ||
3521 | EMACS_SET_SECS (t, sec); | |
3522 | EMACS_SET_USECS (t, usec); | |
3523 | ||
3524 | if (set_file_times (SDATA (encoded_absname), t, t)) | |
3525 | { | |
3526 | #ifdef DOS_NT | |
3527 | struct stat st; | |
3528 | ||
3529 | /* Setting times on a directory always fails. */ | |
3530 | if (stat (SDATA (encoded_absname), &st) == 0 | |
3531 | && (st.st_mode & S_IFMT) == S_IFDIR) | |
3532 | return Qnil; | |
3533 | #endif | |
3534 | report_file_error ("Setting file times", Fcons (absname, Qnil)); | |
3535 | return Qnil; | |
3536 | } | |
3537 | } | |
5df5e07c | 3538 | |
819da85b EZ |
3539 | return Qt; |
3540 | } | |
f793dc6c | 3541 | \f |
697c17a2 | 3542 | #ifdef HAVE_SYNC |
85ffea93 | 3543 | DEFUN ("unix-sync", Funix_sync, Sunix_sync, 0, 0, "", |
8c1a1077 PJ |
3544 | doc: /* Tell Unix to finish all pending disk updates. */) |
3545 | () | |
85ffea93 RS |
3546 | { |
3547 | sync (); | |
3548 | return Qnil; | |
3549 | } | |
3550 | ||
697c17a2 | 3551 | #endif /* HAVE_SYNC */ |
85ffea93 | 3552 | |
570d7624 | 3553 | DEFUN ("file-newer-than-file-p", Ffile_newer_than_file_p, Sfile_newer_than_file_p, 2, 2, 0, |
8c1a1077 PJ |
3554 | doc: /* Return t if file FILE1 is newer than file FILE2. |
3555 | If FILE1 does not exist, the answer is nil; | |
3556 | otherwise, if FILE2 does not exist, the answer is t. */) | |
3557 | (file1, file2) | |
570d7624 JB |
3558 | Lisp_Object file1, file2; |
3559 | { | |
199607e4 | 3560 | Lisp_Object absname1, absname2; |
570d7624 JB |
3561 | struct stat st; |
3562 | int mtime1; | |
32f4334d | 3563 | Lisp_Object handler; |
09121adc | 3564 | struct gcpro gcpro1, gcpro2; |
570d7624 | 3565 | |
b7826503 PJ |
3566 | CHECK_STRING (file1); |
3567 | CHECK_STRING (file2); | |
570d7624 | 3568 | |
199607e4 RS |
3569 | absname1 = Qnil; |
3570 | GCPRO2 (absname1, file2); | |
3571 | absname1 = expand_and_dir_to_file (file1, current_buffer->directory); | |
3572 | absname2 = expand_and_dir_to_file (file2, current_buffer->directory); | |
09121adc | 3573 | UNGCPRO; |
570d7624 | 3574 | |
32f4334d RS |
3575 | /* If the file name has special constructs in it, |
3576 | call the corresponding file handler. */ | |
199607e4 | 3577 | handler = Ffind_file_name_handler (absname1, Qfile_newer_than_file_p); |
51cf6d37 | 3578 | if (NILP (handler)) |
199607e4 | 3579 | handler = Ffind_file_name_handler (absname2, Qfile_newer_than_file_p); |
32f4334d | 3580 | if (!NILP (handler)) |
199607e4 | 3581 | return call3 (handler, Qfile_newer_than_file_p, absname1, absname2); |
32f4334d | 3582 | |
b1d1b865 RS |
3583 | GCPRO2 (absname1, absname2); |
3584 | absname1 = ENCODE_FILE (absname1); | |
3585 | absname2 = ENCODE_FILE (absname2); | |
3586 | UNGCPRO; | |
3587 | ||
d5db4077 | 3588 | if (stat (SDATA (absname1), &st) < 0) |
570d7624 JB |
3589 | return Qnil; |
3590 | ||
3591 | mtime1 = st.st_mtime; | |
3592 | ||
d5db4077 | 3593 | if (stat (SDATA (absname2), &st) < 0) |
570d7624 JB |
3594 | return Qt; |
3595 | ||
3596 | return (mtime1 > st.st_mtime) ? Qt : Qnil; | |
3597 | } | |
3598 | \f | |
5e570b75 | 3599 | #ifdef DOS_NT |
4c3c22f3 | 3600 | Lisp_Object Qfind_buffer_file_type; |
5e570b75 | 3601 | #endif /* DOS_NT */ |
4c3c22f3 | 3602 | |
6fdaa9a0 KH |
3603 | #ifndef READ_BUF_SIZE |
3604 | #define READ_BUF_SIZE (64 << 10) | |
3605 | #endif | |
3606 | ||
98a7d268 KH |
3607 | extern void adjust_markers_for_delete P_ ((int, int, int, int)); |
3608 | ||
3609 | /* This function is called after Lisp functions to decide a coding | |
3610 | system are called, or when they cause an error. Before they are | |
3611 | called, the current buffer is set unibyte and it contains only a | |
3612 | newly inserted text (thus the buffer was empty before the | |
3613 | insertion). | |
3614 | ||
3615 | The functions may set markers, overlays, text properties, or even | |
3616 | alter the buffer contents, change the current buffer. | |
3617 | ||
3618 | Here, we reset all those changes by: | |
3619 | o set back the current buffer. | |
3620 | o move all markers and overlays to BEG. | |
3621 | o remove all text properties. | |
3622 | o set back the buffer multibyteness. */ | |
f736ffbf KH |
3623 | |
3624 | static Lisp_Object | |
98a7d268 KH |
3625 | decide_coding_unwind (unwind_data) |
3626 | Lisp_Object unwind_data; | |
f736ffbf | 3627 | { |
98a7d268 | 3628 | Lisp_Object multibyte, undo_list, buffer; |
f736ffbf | 3629 | |
98a7d268 KH |
3630 | multibyte = XCAR (unwind_data); |
3631 | unwind_data = XCDR (unwind_data); | |
3632 | undo_list = XCAR (unwind_data); | |
3633 | buffer = XCDR (unwind_data); | |
3634 | ||
3635 | if (current_buffer != XBUFFER (buffer)) | |
3636 | set_buffer_internal (XBUFFER (buffer)); | |
3637 | adjust_markers_for_delete (BEG, BEG_BYTE, Z, Z_BYTE); | |
3638 | adjust_overlays_for_delete (BEG, Z - BEG); | |
3639 | BUF_INTERVALS (current_buffer) = 0; | |
3640 | TEMP_SET_PT_BOTH (BEG, BEG_BYTE); | |
3641 | ||
3642 | /* Now we are safe to change the buffer's multibyteness directly. */ | |
3643 | current_buffer->enable_multibyte_characters = multibyte; | |
3644 | current_buffer->undo_list = undo_list; | |
f736ffbf KH |
3645 | |
3646 | return Qnil; | |
3647 | } | |
3648 | ||
55587f8a | 3649 | |
1b978129 | 3650 | /* Used to pass values from insert-file-contents to read_non_regular. */ |
55587f8a | 3651 | |
1b978129 GM |
3652 | static int non_regular_fd; |
3653 | static int non_regular_inserted; | |
3654 | static int non_regular_nbytes; | |
55587f8a | 3655 | |
55587f8a | 3656 | |
1b978129 GM |
3657 | /* Read from a non-regular file. |
3658 | Read non_regular_trytry bytes max from non_regular_fd. | |
3659 | Non_regular_inserted specifies where to put the read bytes. | |
3660 | Value is the number of bytes read. */ | |
55587f8a GM |
3661 | |
3662 | static Lisp_Object | |
1b978129 | 3663 | read_non_regular () |
55587f8a | 3664 | { |
1b978129 | 3665 | int nbytes; |
efdc16c9 | 3666 | |
1b978129 GM |
3667 | immediate_quit = 1; |
3668 | QUIT; | |
3669 | nbytes = emacs_read (non_regular_fd, | |
28c3eb5a | 3670 | BEG_ADDR + PT_BYTE - BEG_BYTE + non_regular_inserted, |
1b978129 | 3671 | non_regular_nbytes); |
1b978129 GM |
3672 | immediate_quit = 0; |
3673 | return make_number (nbytes); | |
3674 | } | |
55587f8a | 3675 | |
d0e2444e | 3676 | |
1b978129 GM |
3677 | /* Condition-case handler used when reading from non-regular files |
3678 | in insert-file-contents. */ | |
3679 | ||
3680 | static Lisp_Object | |
3681 | read_non_regular_quit () | |
3682 | { | |
55587f8a GM |
3683 | return Qnil; |
3684 | } | |
3685 | ||
3686 | ||
570d7624 | 3687 | DEFUN ("insert-file-contents", Finsert_file_contents, Sinsert_file_contents, |
8c1a1077 PJ |
3688 | 1, 5, 0, |
3689 | doc: /* Insert contents of file FILENAME after point. | |
cf6d2357 | 3690 | Returns list of absolute file name and number of characters inserted. |
6f2528d8 MR |
3691 | If second argument VISIT is non-nil, the buffer's visited filename and |
3692 | last save file modtime are set, and it is marked unmodified. If | |
3693 | visiting and the file does not exist, visiting is completed before the | |
3694 | error is signaled. | |
3695 | ||
3696 | The optional third and fourth arguments BEG and END specify what portion | |
3697 | of the file to insert. These arguments count bytes in the file, not | |
3698 | characters in the buffer. If VISIT is non-nil, BEG and END must be nil. | |
3699 | ||
3700 | If optional fifth argument REPLACE is non-nil, replace the current | |
3701 | buffer contents (in the accessible portion) with the file contents. | |
3702 | This is better than simply deleting and inserting the whole thing | |
3703 | because (1) it preserves some marker positions and (2) it puts less data | |
3704 | in the undo list. When REPLACE is non-nil, the second return value is | |
3705 | the number of characters that replace previous buffer contents. | |
3706 | ||
3707 | This function does code conversion according to the value of | |
3708 | `coding-system-for-read' or `file-coding-system-alist', and sets the | |
3709 | variable `last-coding-system-used' to the coding system actually used. */) | |
8c1a1077 | 3710 | (filename, visit, beg, end, replace) |
3d0387c0 | 3711 | Lisp_Object filename, visit, beg, end, replace; |
570d7624 JB |
3712 | { |
3713 | struct stat st; | |
3714 | register int fd; | |
ec7adf26 | 3715 | int inserted = 0; |
570d7624 | 3716 | register int how_much; |
6fdaa9a0 | 3717 | register int unprocessed; |
331379bf | 3718 | int count = SPECPDL_INDEX (); |
6f2528d8 MR |
3719 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5; |
3720 | Lisp_Object handler, val, insval, orig_filename, old_undo; | |
d6a3cc15 | 3721 | Lisp_Object p; |
6bbd7a29 | 3722 | int total = 0; |
53c34c46 | 3723 | int not_regular = 0; |
feb9dc27 | 3724 | unsigned char read_buf[READ_BUF_SIZE]; |
6fdaa9a0 | 3725 | struct coding_system coding; |
3dbcf3f6 | 3726 | unsigned char buffer[1 << 14]; |
727a0b4a | 3727 | int replace_handled = 0; |
ec7adf26 | 3728 | int set_coding_system = 0; |
db327c7e | 3729 | Lisp_Object coding_system; |
1b978129 | 3730 | int read_quit = 0; |
490ee853 | 3731 | Lisp_Object old_Vdeactivate_mark = Vdeactivate_mark; |
68780e2a | 3732 | int we_locked_file = 0; |
32f4334d | 3733 | |
95385625 RS |
3734 | if (current_buffer->base_buffer && ! NILP (visit)) |
3735 | error ("Cannot do file visiting in an indirect buffer"); | |
3736 | ||
3737 | if (!NILP (current_buffer->read_only)) | |
3738 | Fbarf_if_buffer_read_only (); | |
3739 | ||
32f4334d | 3740 | val = Qnil; |
d6a3cc15 | 3741 | p = Qnil; |
b1d1b865 | 3742 | orig_filename = Qnil; |
6f2528d8 | 3743 | old_undo = Qnil; |
32f4334d | 3744 | |
6f2528d8 | 3745 | GCPRO5 (filename, val, p, orig_filename, old_undo); |
570d7624 | 3746 | |
b7826503 | 3747 | CHECK_STRING (filename); |
570d7624 JB |
3748 | filename = Fexpand_file_name (filename, Qnil); |
3749 | ||
1c157f8d KH |
3750 | /* The value Qnil means that the coding system is not yet |
3751 | decided. */ | |
3752 | coding_system = Qnil; | |
3753 | ||
32f4334d RS |
3754 | /* If the file name has special constructs in it, |
3755 | call the corresponding file handler. */ | |
49307295 | 3756 | handler = Ffind_file_name_handler (filename, Qinsert_file_contents); |
32f4334d RS |
3757 | if (!NILP (handler)) |
3758 | { | |
3d0387c0 RS |
3759 | val = call6 (handler, Qinsert_file_contents, filename, |
3760 | visit, beg, end, replace); | |
03699b14 KR |
3761 | if (CONSP (val) && CONSP (XCDR (val))) |
3762 | inserted = XINT (XCAR (XCDR (val))); | |
32f4334d RS |
3763 | goto handled; |
3764 | } | |
3765 | ||
b1d1b865 RS |
3766 | orig_filename = filename; |
3767 | filename = ENCODE_FILE (filename); | |
3768 | ||
570d7624 JB |
3769 | fd = -1; |
3770 | ||
c1c4693e RS |
3771 | #ifdef WINDOWSNT |
3772 | { | |
3773 | Lisp_Object tem = Vw32_get_true_file_attributes; | |
3774 | ||
3775 | /* Tell stat to use expensive method to get accurate info. */ | |
3776 | Vw32_get_true_file_attributes = Qt; | |
d5db4077 | 3777 | total = stat (SDATA (filename), &st); |
c1c4693e RS |
3778 | Vw32_get_true_file_attributes = tem; |
3779 | } | |
3780 | if (total < 0) | |
3781 | #else | |
d5db4077 | 3782 | if (stat (SDATA (filename), &st) < 0) |
c1c4693e | 3783 | #endif /* WINDOWSNT */ |
570d7624 | 3784 | { |
68c45bf0 | 3785 | if (fd >= 0) emacs_close (fd); |
99bc28f4 | 3786 | badopen: |
265a9e55 | 3787 | if (NILP (visit)) |
b1d1b865 | 3788 | report_file_error ("Opening input file", Fcons (orig_filename, Qnil)); |
570d7624 JB |
3789 | st.st_mtime = -1; |
3790 | how_much = 0; | |
0de6b8f4 | 3791 | if (!NILP (Vcoding_system_for_read)) |
22d92d6b | 3792 | Fset (Qbuffer_file_coding_system, Vcoding_system_for_read); |
570d7624 JB |
3793 | goto notfound; |
3794 | } | |
3795 | ||
99bc28f4 | 3796 | #ifdef S_IFREG |
be53b411 JB |
3797 | /* This code will need to be changed in order to work on named |
3798 | pipes, and it's probably just not worth it. So we should at | |
3799 | least signal an error. */ | |
99bc28f4 | 3800 | if (!S_ISREG (st.st_mode)) |
330bfe57 | 3801 | { |
d4b8687b RS |
3802 | not_regular = 1; |
3803 | ||
3804 | if (! NILP (visit)) | |
3805 | goto notfound; | |
3806 | ||
3807 | if (! NILP (replace) || ! NILP (beg) || ! NILP (end)) | |
24b1ddad KS |
3808 | xsignal2 (Qfile_error, |
3809 | build_string ("not a regular file"), orig_filename); | |
330bfe57 | 3810 | } |
be53b411 JB |
3811 | #endif |
3812 | ||
99bc28f4 | 3813 | if (fd < 0) |
d5db4077 | 3814 | if ((fd = emacs_open (SDATA (filename), O_RDONLY, 0)) < 0) |
99bc28f4 KH |
3815 | goto badopen; |
3816 | ||
3817 | /* Replacement should preserve point as it preserves markers. */ | |
3818 | if (!NILP (replace)) | |
3819 | record_unwind_protect (restore_point_unwind, Fpoint_marker ()); | |
3820 | ||
3821 | record_unwind_protect (close_file_unwind, make_number (fd)); | |
3822 | ||
570d7624 | 3823 | /* Supposedly happens on VMS. */ |
11d300db JR |
3824 | /* Can happen on any platform that uses long as type of off_t, but allows |
3825 | file sizes to exceed 2Gb. VMS is no longer officially supported, so | |
3826 | give a message suitable for the latter case. */ | |
d4b8687b | 3827 | if (! not_regular && st.st_size < 0) |
11d300db | 3828 | error ("Maximum buffer size exceeded"); |
be53b411 | 3829 | |
9c856db9 GM |
3830 | /* Prevent redisplay optimizations. */ |
3831 | current_buffer->clip_changed = 1; | |
3832 | ||
9f57b6b4 KH |
3833 | if (!NILP (visit)) |
3834 | { | |
3835 | if (!NILP (beg) || !NILP (end)) | |
3836 | error ("Attempt to visit less than an entire file"); | |
3837 | if (BEG < Z && NILP (replace)) | |
3838 | error ("Cannot do file visiting in a non-empty buffer"); | |
3839 | } | |
7fded690 JB |
3840 | |
3841 | if (!NILP (beg)) | |
b7826503 | 3842 | CHECK_NUMBER (beg); |
7fded690 | 3843 | else |
2acfd7ae | 3844 | XSETFASTINT (beg, 0); |
7fded690 JB |
3845 | |
3846 | if (!NILP (end)) | |
b7826503 | 3847 | CHECK_NUMBER (end); |
7fded690 JB |
3848 | else |
3849 | { | |
d4b8687b RS |
3850 | if (! not_regular) |
3851 | { | |
3852 | XSETINT (end, st.st_size); | |
68c45bf0 PE |
3853 | |
3854 | /* Arithmetic overflow can occur if an Emacs integer cannot | |
3855 | represent the file size, or if the calculations below | |
3856 | overflow. The calculations below double the file size | |
3857 | twice, so check that it can be multiplied by 4 safely. */ | |
3858 | if (XINT (end) != st.st_size | |
77a28bbf | 3859 | || st.st_size > INT_MAX / 4) |
d4b8687b | 3860 | error ("Maximum buffer size exceeded"); |
d21dd12d GM |
3861 | |
3862 | /* The file size returned from stat may be zero, but data | |
3863 | may be readable nonetheless, for example when this is a | |
3864 | file in the /proc filesystem. */ | |
3865 | if (st.st_size == 0) | |
3866 | XSETINT (end, READ_BUF_SIZE); | |
d4b8687b | 3867 | } |
7fded690 JB |
3868 | } |
3869 | ||
356a6224 | 3870 | if (EQ (Vcoding_system_for_read, Qauto_save_coding)) |
5560aecd | 3871 | { |
75421805 | 3872 | coding_system = coding_inherit_eol_type (Qutf_8_emacs, Qunix); |
5560aecd KH |
3873 | setup_coding_system (coding_system, &coding); |
3874 | /* Ensure we set Vlast_coding_system_used. */ | |
3875 | set_coding_system = 1; | |
3876 | } | |
356a6224 | 3877 | else if (BEG < Z) |
f736ffbf KH |
3878 | { |
3879 | /* Decide the coding system to use for reading the file now | |
3880 | because we can't use an optimized method for handling | |
3881 | `coding:' tag if the current buffer is not empty. */ | |
f736ffbf | 3882 | if (!NILP (Vcoding_system_for_read)) |
db327c7e | 3883 | coding_system = Vcoding_system_for_read; |
f736ffbf KH |
3884 | else |
3885 | { | |
3886 | /* Don't try looking inside a file for a coding system | |
3887 | specification if it is not seekable. */ | |
3888 | if (! not_regular && ! NILP (Vset_auto_coding_function)) | |
3889 | { | |
3890 | /* Find a coding system specified in the heading two | |
3891 | lines or in the tailing several lines of the file. | |
3892 | We assume that the 1K-byte and 3K-byte for heading | |
003a7eaa | 3893 | and tailing respectively are sufficient for this |
f736ffbf | 3894 | purpose. */ |
07590973 | 3895 | int nread; |
f736ffbf KH |
3896 | |
3897 | if (st.st_size <= (1024 * 4)) | |
68c45bf0 | 3898 | nread = emacs_read (fd, read_buf, 1024 * 4); |
f736ffbf KH |
3899 | else |
3900 | { | |
68c45bf0 | 3901 | nread = emacs_read (fd, read_buf, 1024); |
f736ffbf KH |
3902 | if (nread >= 0) |
3903 | { | |
3904 | if (lseek (fd, st.st_size - (1024 * 3), 0) < 0) | |
3905 | report_file_error ("Setting file position", | |
3906 | Fcons (orig_filename, Qnil)); | |
68c45bf0 | 3907 | nread += emacs_read (fd, read_buf + nread, 1024 * 3); |
f736ffbf KH |
3908 | } |
3909 | } | |
feb9dc27 | 3910 | |
f736ffbf KH |
3911 | if (nread < 0) |
3912 | error ("IO error reading %s: %s", | |
d5db4077 | 3913 | SDATA (orig_filename), emacs_strerror (errno)); |
f736ffbf KH |
3914 | else if (nread > 0) |
3915 | { | |
f736ffbf | 3916 | struct buffer *prev = current_buffer; |
685fc579 RS |
3917 | Lisp_Object buffer; |
3918 | struct buffer *buf; | |
f736ffbf KH |
3919 | |
3920 | record_unwind_protect (Fset_buffer, Fcurrent_buffer ()); | |
1d92afcd | 3921 | |
685fc579 RS |
3922 | buffer = Fget_buffer_create (build_string (" *code-converting-work*")); |
3923 | buf = XBUFFER (buffer); | |
3924 | ||
29ea8ae9 | 3925 | delete_all_overlays (buf); |
685fc579 RS |
3926 | buf->directory = current_buffer->directory; |
3927 | buf->read_only = Qnil; | |
3928 | buf->filename = Qnil; | |
3929 | buf->undo_list = Qt; | |
29ea8ae9 SM |
3930 | eassert (buf->overlays_before == NULL); |
3931 | eassert (buf->overlays_after == NULL); | |
efdc16c9 | 3932 | |
685fc579 RS |
3933 | set_buffer_internal (buf); |
3934 | Ferase_buffer (); | |
3935 | buf->enable_multibyte_characters = Qnil; | |
3936 | ||
f736ffbf KH |
3937 | insert_1_both (read_buf, nread, nread, 0, 0, 0); |
3938 | TEMP_SET_PT_BOTH (BEG, BEG_BYTE); | |
db327c7e | 3939 | coding_system = call2 (Vset_auto_coding_function, |
8f924df7 | 3940 | filename, make_number (nread)); |
f736ffbf | 3941 | set_buffer_internal (prev); |
efdc16c9 | 3942 | |
f736ffbf KH |
3943 | /* Discard the unwind protect for recovering the |
3944 | current buffer. */ | |
3945 | specpdl_ptr--; | |
3946 | ||
3947 | /* Rewind the file for the actual read done later. */ | |
3948 | if (lseek (fd, 0, 0) < 0) | |
3949 | report_file_error ("Setting file position", | |
3950 | Fcons (orig_filename, Qnil)); | |
3951 | } | |
3952 | } | |
feb9dc27 | 3953 | |
db327c7e | 3954 | if (NILP (coding_system)) |
f736ffbf KH |
3955 | { |
3956 | /* If we have not yet decided a coding system, check | |
3957 | file-coding-system-alist. */ | |
8f924df7 | 3958 | Lisp_Object args[6]; |
f736ffbf KH |
3959 | |
3960 | args[0] = Qinsert_file_contents, args[1] = orig_filename; | |
3961 | args[2] = visit, args[3] = beg, args[4] = end, args[5] = replace; | |
8f924df7 KH |
3962 | coding_system = Ffind_operation_coding_system (6, args); |
3963 | if (CONSP (coding_system)) | |
3964 | coding_system = XCAR (coding_system); | |
f736ffbf KH |
3965 | } |
3966 | } | |
c9e82392 | 3967 | |
db327c7e KH |
3968 | if (NILP (coding_system)) |
3969 | coding_system = Qundecided; | |
3970 | else | |
3971 | CHECK_CODING_SYSTEM (coding_system); | |
c8a6d68a | 3972 | |
db327c7e | 3973 | if (NILP (current_buffer->enable_multibyte_characters)) |
237a6fd2 RS |
3974 | /* We must suppress all character code conversion except for |
3975 | end-of-line conversion. */ | |
db327c7e | 3976 | coding_system = raw_text_coding_system (coding_system); |
54369368 | 3977 | |
db327c7e KH |
3978 | setup_coding_system (coding_system, &coding); |
3979 | /* Ensure we set Vlast_coding_system_used. */ | |
3980 | set_coding_system = 1; | |
f736ffbf | 3981 | } |
6cf71bf1 | 3982 | |
3d0387c0 RS |
3983 | /* If requested, replace the accessible part of the buffer |
3984 | with the file contents. Avoid replacing text at the | |
3985 | beginning or end of the buffer that matches the file contents; | |
3dbcf3f6 RS |
3986 | that preserves markers pointing to the unchanged parts. |
3987 | ||
3988 | Here we implement this feature in an optimized way | |
3989 | for the case where code conversion is NOT needed. | |
3990 | The following if-statement handles the case of conversion | |
727a0b4a RS |
3991 | in a less optimal way. |
3992 | ||
3993 | If the code conversion is "automatic" then we try using this | |
3994 | method and hope for the best. | |
3995 | But if we discover the need for conversion, we give up on this method | |
3996 | and let the following if-statement handle the replace job. */ | |
3dbcf3f6 | 3997 | if (!NILP (replace) |
f736ffbf | 3998 | && BEGV < ZV |
db327c7e KH |
3999 | && (NILP (coding_system) |
4000 | || ! CODING_REQUIRE_DECODING (&coding))) | |
3d0387c0 | 4001 | { |
ec7adf26 RS |
4002 | /* same_at_start and same_at_end count bytes, |
4003 | because file access counts bytes | |
4004 | and BEG and END count bytes. */ | |
4005 | int same_at_start = BEGV_BYTE; | |
4006 | int same_at_end = ZV_BYTE; | |
9c28748f | 4007 | int overlap; |
6fdaa9a0 KH |
4008 | /* There is still a possibility we will find the need to do code |
4009 | conversion. If that happens, we set this variable to 1 to | |
727a0b4a | 4010 | give up on handling REPLACE in the optimized way. */ |
6fdaa9a0 | 4011 | int giveup_match_end = 0; |
9c28748f | 4012 | |
4d2a0879 RS |
4013 | if (XINT (beg) != 0) |
4014 | { | |
4015 | if (lseek (fd, XINT (beg), 0) < 0) | |
4016 | report_file_error ("Setting file position", | |
b1d1b865 | 4017 | Fcons (orig_filename, Qnil)); |
4d2a0879 RS |
4018 | } |
4019 | ||
3d0387c0 RS |
4020 | immediate_quit = 1; |
4021 | QUIT; | |
4022 | /* Count how many chars at the start of the file | |
4023 | match the text at the beginning of the buffer. */ | |
4024 | while (1) | |
4025 | { | |
4026 | int nread, bufpos; | |
4027 | ||
68c45bf0 | 4028 | nread = emacs_read (fd, buffer, sizeof buffer); |
3d0387c0 RS |
4029 | if (nread < 0) |
4030 | error ("IO error reading %s: %s", | |
d5db4077 | 4031 | SDATA (orig_filename), emacs_strerror (errno)); |
3d0387c0 RS |
4032 | else if (nread == 0) |
4033 | break; | |
6fdaa9a0 | 4034 | |
db327c7e | 4035 | if (CODING_REQUIRE_DETECTION (&coding)) |
727a0b4a | 4036 | { |
5b359650 | 4037 | coding_system = detect_coding_system (buffer, nread, nread, 1, 0, |
db327c7e KH |
4038 | coding_system); |
4039 | setup_coding_system (coding_system, &coding); | |
727a0b4a RS |
4040 | } |
4041 | ||
db327c7e KH |
4042 | if (CODING_REQUIRE_DECODING (&coding)) |
4043 | /* We found that the file should be decoded somehow. | |
727a0b4a RS |
4044 | Let's give up here. */ |
4045 | { | |
4046 | giveup_match_end = 1; | |
4047 | break; | |
4048 | } | |
4049 | ||
3d0387c0 | 4050 | bufpos = 0; |
ec7adf26 | 4051 | while (bufpos < nread && same_at_start < ZV_BYTE |
6fdaa9a0 | 4052 | && FETCH_BYTE (same_at_start) == buffer[bufpos]) |
3d0387c0 RS |
4053 | same_at_start++, bufpos++; |
4054 | /* If we found a discrepancy, stop the scan. | |
8e6208c5 | 4055 | Otherwise loop around and scan the next bufferful. */ |
3d0387c0 RS |
4056 | if (bufpos != nread) |
4057 | break; | |
4058 | } | |
4059 | immediate_quit = 0; | |
4060 | /* If the file matches the buffer completely, | |
4061 | there's no need to replace anything. */ | |
ec7adf26 | 4062 | if (same_at_start - BEGV_BYTE == XINT (end)) |
3d0387c0 | 4063 | { |
68c45bf0 | 4064 | emacs_close (fd); |
a1d2b64a | 4065 | specpdl_ptr--; |
1051b3b3 | 4066 | /* Truncate the buffer to the size of the file. */ |
7dae4502 | 4067 | del_range_1 (same_at_start, same_at_end, 0, 0); |
3d0387c0 RS |
4068 | goto handled; |
4069 | } | |
4070 | immediate_quit = 1; | |
4071 | QUIT; | |
4072 | /* Count how many chars at the end of the file | |
6fdaa9a0 KH |
4073 | match the text at the end of the buffer. But, if we have |
4074 | already found that decoding is necessary, don't waste time. */ | |
4075 | while (!giveup_match_end) | |
3d0387c0 RS |
4076 | { |
4077 | int total_read, nread, bufpos, curpos, trial; | |
4078 | ||
4079 | /* At what file position are we now scanning? */ | |
ec7adf26 | 4080 | curpos = XINT (end) - (ZV_BYTE - same_at_end); |
fc81fa9e KH |
4081 | /* If the entire file matches the buffer tail, stop the scan. */ |
4082 | if (curpos == 0) | |
4083 | break; | |
3d0387c0 RS |
4084 | /* How much can we scan in the next step? */ |
4085 | trial = min (curpos, sizeof buffer); | |
4086 | if (lseek (fd, curpos - trial, 0) < 0) | |
4087 | report_file_error ("Setting file position", | |
b1d1b865 | 4088 | Fcons (orig_filename, Qnil)); |
3d0387c0 | 4089 | |
b02439c8 | 4090 | total_read = nread = 0; |
3d0387c0 RS |
4091 | while (total_read < trial) |
4092 | { | |
68c45bf0 | 4093 | nread = emacs_read (fd, buffer + total_read, trial - total_read); |
2bd2273e | 4094 | if (nread < 0) |
3d0387c0 | 4095 | error ("IO error reading %s: %s", |
d5db4077 | 4096 | SDATA (orig_filename), emacs_strerror (errno)); |
2bd2273e GM |
4097 | else if (nread == 0) |
4098 | break; | |
3d0387c0 RS |
4099 | total_read += nread; |
4100 | } | |
efdc16c9 | 4101 | |
8e6208c5 | 4102 | /* Scan this bufferful from the end, comparing with |
3d0387c0 RS |
4103 | the Emacs buffer. */ |
4104 | bufpos = total_read; | |
efdc16c9 | 4105 | |
3d0387c0 RS |
4106 | /* Compare with same_at_start to avoid counting some buffer text |
4107 | as matching both at the file's beginning and at the end. */ | |
4108 | while (bufpos > 0 && same_at_end > same_at_start | |
6fdaa9a0 | 4109 | && FETCH_BYTE (same_at_end - 1) == buffer[bufpos - 1]) |
3d0387c0 | 4110 | same_at_end--, bufpos--; |
727a0b4a | 4111 | |
3d0387c0 | 4112 | /* If we found a discrepancy, stop the scan. |
8e6208c5 | 4113 | Otherwise loop around and scan the preceding bufferful. */ |
3d0387c0 | 4114 | if (bufpos != 0) |
727a0b4a RS |
4115 | { |
4116 | /* If this discrepancy is because of code conversion, | |
4117 | we cannot use this method; giveup and try the other. */ | |
4118 | if (same_at_end > same_at_start | |
4119 | && FETCH_BYTE (same_at_end - 1) >= 0200 | |
71312b68 | 4120 | && ! NILP (current_buffer->enable_multibyte_characters) |
c8a6d68a | 4121 | && (CODING_MAY_REQUIRE_DECODING (&coding))) |
727a0b4a RS |
4122 | giveup_match_end = 1; |
4123 | break; | |
4124 | } | |
b02439c8 GM |
4125 | |
4126 | if (nread == 0) | |
4127 | break; | |
3d0387c0 RS |
4128 | } |
4129 | immediate_quit = 0; | |
9c28748f | 4130 | |
727a0b4a RS |
4131 | if (! giveup_match_end) |
4132 | { | |
ec7adf26 RS |
4133 | int temp; |
4134 | ||
727a0b4a | 4135 | /* We win! We can handle REPLACE the optimized way. */ |
9c28748f | 4136 | |
20f6783d RS |
4137 | /* Extend the start of non-matching text area to multibyte |
4138 | character boundary. */ | |
4139 | if (! NILP (current_buffer->enable_multibyte_characters)) | |
4140 | while (same_at_start > BEGV_BYTE | |
4141 | && ! CHAR_HEAD_P (FETCH_BYTE (same_at_start))) | |
4142 | same_at_start--; | |
4143 | ||
4144 | /* Extend the end of non-matching text area to multibyte | |
71312b68 RS |
4145 | character boundary. */ |
4146 | if (! NILP (current_buffer->enable_multibyte_characters)) | |
ec7adf26 RS |
4147 | while (same_at_end < ZV_BYTE |
4148 | && ! CHAR_HEAD_P (FETCH_BYTE (same_at_end))) | |
71312b68 RS |
4149 | same_at_end++; |
4150 | ||
727a0b4a | 4151 | /* Don't try to reuse the same piece of text twice. */ |
ec7adf26 RS |
4152 | overlap = (same_at_start - BEGV_BYTE |
4153 | - (same_at_end + st.st_size - ZV)); | |
727a0b4a RS |
4154 | if (overlap > 0) |
4155 | same_at_end += overlap; | |
9c28748f | 4156 | |
727a0b4a | 4157 | /* Arrange to read only the nonmatching middle part of the file. */ |
ec7adf26 RS |
4158 | XSETFASTINT (beg, XINT (beg) + (same_at_start - BEGV_BYTE)); |
4159 | XSETFASTINT (end, XINT (end) - (ZV_BYTE - same_at_end)); | |
3dbcf3f6 | 4160 | |
ec7adf26 | 4161 | del_range_byte (same_at_start, same_at_end, 0); |
727a0b4a | 4162 | /* Insert from the file at the proper position. */ |
ec7adf26 RS |
4163 | temp = BYTE_TO_CHAR (same_at_start); |
4164 | SET_PT_BOTH (temp, same_at_start); | |
727a0b4a RS |
4165 | |
4166 | /* If display currently starts at beginning of line, | |
4167 | keep it that way. */ | |
4168 | if (XBUFFER (XWINDOW (selected_window)->buffer) == current_buffer) | |
4169 | XWINDOW (selected_window)->start_at_line_beg = Fbolp (); | |
4170 | ||
4171 | replace_handled = 1; | |
4172 | } | |
3dbcf3f6 RS |
4173 | } |
4174 | ||
4175 | /* If requested, replace the accessible part of the buffer | |
4176 | with the file contents. Avoid replacing text at the | |
4177 | beginning or end of the buffer that matches the file contents; | |
4178 | that preserves markers pointing to the unchanged parts. | |
4179 | ||
4180 | Here we implement this feature for the case where code conversion | |
4181 | is needed, in a simple way that needs a lot of memory. | |
4182 | The preceding if-statement handles the case of no conversion | |
4183 | in a more optimized way. */ | |
f736ffbf | 4184 | if (!NILP (replace) && ! replace_handled && BEGV < ZV) |
3dbcf3f6 | 4185 | { |
ec7adf26 RS |
4186 | int same_at_start = BEGV_BYTE; |
4187 | int same_at_end = ZV_BYTE; | |
50342b35 KH |
4188 | int same_at_start_charpos; |
4189 | int inserted_chars; | |
3dbcf3f6 RS |
4190 | int overlap; |
4191 | int bufpos; | |
db327c7e | 4192 | unsigned char *decoded; |
ec7adf26 | 4193 | int temp; |
8f924df7 | 4194 | int this_count = SPECPDL_INDEX (); |
59c94f03 | 4195 | int multibyte = ! NILP (current_buffer->enable_multibyte_characters); |
5b359650 | 4196 | Lisp_Object conversion_buffer; |
db327c7e | 4197 | |
5b359650 | 4198 | conversion_buffer = code_conversion_save (1, multibyte); |
3dbcf3f6 RS |
4199 | |
4200 | /* First read the whole file, performing code conversion into | |
4201 | CONVERSION_BUFFER. */ | |
4202 | ||
727a0b4a | 4203 | if (lseek (fd, XINT (beg), 0) < 0) |
8f924df7 KH |
4204 | report_file_error ("Setting file position", |
4205 | Fcons (orig_filename, Qnil)); | |
727a0b4a | 4206 | |
3dbcf3f6 RS |
4207 | total = st.st_size; /* Total bytes in the file. */ |
4208 | how_much = 0; /* Bytes read from file so far. */ | |
4209 | inserted = 0; /* Bytes put into CONVERSION_BUFFER so far. */ | |
4210 | unprocessed = 0; /* Bytes not processed in previous loop. */ | |
4211 | ||
2ba48777 | 4212 | GCPRO1 (conversion_buffer); |
3dbcf3f6 RS |
4213 | while (how_much < total) |
4214 | { | |
db327c7e KH |
4215 | /* We read one bunch by one (READ_BUF_SIZE bytes) to allow |
4216 | quitting while reading a huge while. */ | |
3dbcf3f6 RS |
4217 | /* try is reserved in some compilers (Microsoft C) */ |
4218 | int trytry = min (total - how_much, READ_BUF_SIZE - unprocessed); | |
3dbcf3f6 RS |
4219 | int this; |
4220 | ||
4221 | /* Allow quitting out of the actual I/O. */ | |
4222 | immediate_quit = 1; | |
4223 | QUIT; | |
db327c7e | 4224 | this = emacs_read (fd, read_buf + unprocessed, trytry); |
3dbcf3f6 RS |
4225 | immediate_quit = 0; |
4226 | ||
db327c7e | 4227 | if (this <= 0) |
3dbcf3f6 | 4228 | { |
db327c7e KH |
4229 | if (this < 0) |
4230 | how_much = this; | |
3dbcf3f6 RS |
4231 | break; |
4232 | } | |
4233 | ||
4234 | how_much += this; | |
4235 | ||
2ba48777 KH |
4236 | BUF_SET_PT (XBUFFER (conversion_buffer), |
4237 | BUF_Z (XBUFFER (conversion_buffer))); | |
db327c7e KH |
4238 | decode_coding_c_string (&coding, read_buf, unprocessed + this, |
4239 | conversion_buffer); | |
4240 | unprocessed = coding.carryover_bytes; | |
4241 | if (coding.carryover_bytes > 0) | |
4242 | bcopy (coding.carryover, read_buf, unprocessed); | |
3dbcf3f6 | 4243 | } |
2ba48777 | 4244 | UNGCPRO; |
db327c7e | 4245 | emacs_close (fd); |
3dbcf3f6 | 4246 | |
db327c7e KH |
4247 | /* At this point, HOW_MUCH should equal TOTAL, or should be <= 0 |
4248 | if we couldn't read the file. */ | |
3dbcf3f6 RS |
4249 | |
4250 | if (how_much < 0) | |
4ed925c6 MB |
4251 | error ("IO error reading %s: %s", |
4252 | SDATA (orig_filename), emacs_strerror (errno)); | |
3dbcf3f6 | 4253 | |
db327c7e KH |
4254 | if (unprocessed > 0) |
4255 | { | |
4256 | coding.mode |= CODING_MODE_LAST_BLOCK; | |
4257 | decode_coding_c_string (&coding, read_buf, unprocessed, | |
4258 | conversion_buffer); | |
4259 | coding.mode &= ~CODING_MODE_LAST_BLOCK; | |
4260 | } | |
4261 | ||
4262 | decoded = BUF_BEG_ADDR (XBUFFER (conversion_buffer)); | |
50342b35 KH |
4263 | inserted = (BUF_Z_BYTE (XBUFFER (conversion_buffer)) |
4264 | - BUF_BEG_BYTE (XBUFFER (conversion_buffer))); | |
db327c7e KH |
4265 | |
4266 | /* Compare the beginning of the converted string with the buffer | |
4267 | text. */ | |
3dbcf3f6 RS |
4268 | |
4269 | bufpos = 0; | |
4270 | while (bufpos < inserted && same_at_start < same_at_end | |
db327c7e | 4271 | && FETCH_BYTE (same_at_start) == decoded[bufpos]) |
3dbcf3f6 RS |
4272 | same_at_start++, bufpos++; |
4273 | ||
db327c7e | 4274 | /* If the file matches the head of buffer completely, |
3dbcf3f6 RS |
4275 | there's no need to replace anything. */ |
4276 | ||
4277 | if (bufpos == inserted) | |
4278 | { | |
3dbcf3f6 RS |
4279 | specpdl_ptr--; |
4280 | /* Truncate the buffer to the size of the file. */ | |
427f5aab KH |
4281 | del_range_byte (same_at_start, same_at_end, 0); |
4282 | inserted = 0; | |
e8553dd1 KH |
4283 | |
4284 | unbind_to (this_count, Qnil); | |
3dbcf3f6 RS |
4285 | goto handled; |
4286 | } | |
4287 | ||
db327c7e KH |
4288 | /* Extend the start of non-matching text area to the previous |
4289 | multibyte character boundary. */ | |
20f6783d RS |
4290 | if (! NILP (current_buffer->enable_multibyte_characters)) |
4291 | while (same_at_start > BEGV_BYTE | |
4292 | && ! CHAR_HEAD_P (FETCH_BYTE (same_at_start))) | |
4293 | same_at_start--; | |
4294 | ||
3dbcf3f6 RS |
4295 | /* Scan this bufferful from the end, comparing with |
4296 | the Emacs buffer. */ | |
4297 | bufpos = inserted; | |
4298 | ||
4299 | /* Compare with same_at_start to avoid counting some buffer text | |
4300 | as matching both at the file's beginning and at the end. */ | |
4301 | while (bufpos > 0 && same_at_end > same_at_start | |
db327c7e | 4302 | && FETCH_BYTE (same_at_end - 1) == decoded[bufpos - 1]) |
3dbcf3f6 RS |
4303 | same_at_end--, bufpos--; |
4304 | ||
db327c7e KH |
4305 | /* Extend the end of non-matching text area to the next |
4306 | multibyte character boundary. */ | |
20f6783d RS |
4307 | if (! NILP (current_buffer->enable_multibyte_characters)) |
4308 | while (same_at_end < ZV_BYTE | |
4309 | && ! CHAR_HEAD_P (FETCH_BYTE (same_at_end))) | |
4310 | same_at_end++; | |
4311 | ||
3dbcf3f6 | 4312 | /* Don't try to reuse the same piece of text twice. */ |
ec7adf26 | 4313 | overlap = same_at_start - BEGV_BYTE - (same_at_end + inserted - ZV_BYTE); |
3dbcf3f6 RS |
4314 | if (overlap > 0) |
4315 | same_at_end += overlap; | |
4316 | ||
727a0b4a RS |
4317 | /* If display currently starts at beginning of line, |
4318 | keep it that way. */ | |
4319 | if (XBUFFER (XWINDOW (selected_window)->buffer) == current_buffer) | |
4320 | XWINDOW (selected_window)->start_at_line_beg = Fbolp (); | |
4321 | ||
3dbcf3f6 RS |
4322 | /* Replace the chars that we need to replace, |
4323 | and update INSERTED to equal the number of bytes | |
db327c7e | 4324 | we are taking from the decoded string. */ |
4b70e2c9 | 4325 | inserted -= (ZV_BYTE - same_at_end) + (same_at_start - BEGV_BYTE); |
427f5aab | 4326 | |
643c73b9 | 4327 | if (same_at_end != same_at_start) |
427f5aab KH |
4328 | { |
4329 | del_range_byte (same_at_start, same_at_end, 0); | |
4330 | temp = GPT; | |
4331 | same_at_start = GPT_BYTE; | |
4332 | } | |
643c73b9 RS |
4333 | else |
4334 | { | |
643c73b9 | 4335 | temp = BYTE_TO_CHAR (same_at_start); |
643c73b9 | 4336 | } |
427f5aab KH |
4337 | /* Insert from the file at the proper position. */ |
4338 | SET_PT_BOTH (temp, same_at_start); | |
50342b35 KH |
4339 | same_at_start_charpos |
4340 | = buf_bytepos_to_charpos (XBUFFER (conversion_buffer), | |
4341 | same_at_start); | |
4342 | inserted_chars | |
4343 | = (buf_bytepos_to_charpos (XBUFFER (conversion_buffer), | |
4344 | same_at_start + inserted) | |
4345 | - same_at_start_charpos); | |
d07af40d KH |
4346 | /* This binding is to avoid ask-user-about-supersession-threat |
4347 | being called in insert_from_buffer (via in | |
4348 | prepare_to_modify_buffer). */ | |
4349 | specbind (intern ("buffer-file-name"), Qnil); | |
db327c7e | 4350 | insert_from_buffer (XBUFFER (conversion_buffer), |
50342b35 | 4351 | same_at_start_charpos, inserted_chars, 0); |
427f5aab KH |
4352 | /* Set `inserted' to the number of inserted characters. */ |
4353 | inserted = PT - temp; | |
77343e1d KH |
4354 | /* Set point before the inserted characters. */ |
4355 | SET_PT_BOTH (temp, same_at_start); | |
3dbcf3f6 | 4356 | |
db327c7e | 4357 | unbind_to (this_count, Qnil); |
3dbcf3f6 | 4358 | |
3dbcf3f6 | 4359 | goto handled; |
3d0387c0 RS |
4360 | } |
4361 | ||
d4b8687b RS |
4362 | if (! not_regular) |
4363 | { | |
4364 | register Lisp_Object temp; | |
7fded690 | 4365 | |
d4b8687b | 4366 | total = XINT (end) - XINT (beg); |
570d7624 | 4367 | |
d4b8687b RS |
4368 | /* Make sure point-max won't overflow after this insertion. */ |
4369 | XSETINT (temp, total); | |
4370 | if (total != XINT (temp)) | |
4371 | error ("Maximum buffer size exceeded"); | |
4372 | } | |
4373 | else | |
4374 | /* For a special file, all we can do is guess. */ | |
4375 | total = READ_BUF_SIZE; | |
570d7624 | 4376 | |
68780e2a RS |
4377 | if (NILP (visit) && inserted > 0) |
4378 | { | |
4379 | #ifdef CLASH_DETECTION | |
4380 | if (!NILP (current_buffer->file_truename) | |
4381 | /* Make binding buffer-file-name to nil effective. */ | |
4382 | && !NILP (current_buffer->filename) | |
4383 | && SAVE_MODIFF >= MODIFF) | |
4384 | we_locked_file = 1; | |
4385 | #endif /* CLASH_DETECTION */ | |
4386 | prepare_to_modify_buffer (GPT, GPT, NULL); | |
4387 | } | |
570d7624 | 4388 | |
7fe52289 | 4389 | move_gap (PT); |
7fded690 JB |
4390 | if (GAP_SIZE < total) |
4391 | make_gap (total - GAP_SIZE); | |
4392 | ||
a1d2b64a | 4393 | if (XINT (beg) != 0 || !NILP (replace)) |
7fded690 JB |
4394 | { |
4395 | if (lseek (fd, XINT (beg), 0) < 0) | |
b1d1b865 RS |
4396 | report_file_error ("Setting file position", |
4397 | Fcons (orig_filename, Qnil)); | |
7fded690 JB |
4398 | } |
4399 | ||
6fdaa9a0 | 4400 | /* In the following loop, HOW_MUCH contains the total bytes read so |
c8a6d68a KH |
4401 | far for a regular file, and not changed for a special file. But, |
4402 | before exiting the loop, it is set to a negative value if I/O | |
4403 | error occurs. */ | |
a1d2b64a | 4404 | how_much = 0; |
efdc16c9 | 4405 | |
6fdaa9a0 KH |
4406 | /* Total bytes inserted. */ |
4407 | inserted = 0; | |
efdc16c9 | 4408 | |
c8a6d68a | 4409 | /* Here, we don't do code conversion in the loop. It is done by |
db327c7e | 4410 | decode_coding_gap after all data are read into the buffer. */ |
1b978129 GM |
4411 | { |
4412 | int gap_size = GAP_SIZE; | |
efdc16c9 | 4413 | |
1b978129 GM |
4414 | while (how_much < total) |
4415 | { | |
5e570b75 | 4416 | /* try is reserved in some compilers (Microsoft C) */ |
1b978129 GM |
4417 | int trytry = min (total - how_much, READ_BUF_SIZE); |
4418 | int this; | |
570d7624 | 4419 | |
1b978129 GM |
4420 | if (not_regular) |
4421 | { | |
4422 | Lisp_Object val; | |
570d7624 | 4423 | |
1b978129 GM |
4424 | /* Maybe make more room. */ |
4425 | if (gap_size < trytry) | |
4426 | { | |
4427 | make_gap (total - gap_size); | |
4428 | gap_size = GAP_SIZE; | |
4429 | } | |
4430 | ||
4431 | /* Read from the file, capturing `quit'. When an | |
4432 | error occurs, end the loop, and arrange for a quit | |
4433 | to be signaled after decoding the text we read. */ | |
4434 | non_regular_fd = fd; | |
4435 | non_regular_inserted = inserted; | |
4436 | non_regular_nbytes = trytry; | |
4437 | val = internal_condition_case_1 (read_non_regular, Qnil, Qerror, | |
4438 | read_non_regular_quit); | |
4439 | if (NILP (val)) | |
4440 | { | |
4441 | read_quit = 1; | |
4442 | break; | |
4443 | } | |
4444 | ||
4445 | this = XINT (val); | |
4446 | } | |
4447 | else | |
4448 | { | |
4449 | /* Allow quitting out of the actual I/O. We don't make text | |
4450 | part of the buffer until all the reading is done, so a C-g | |
4451 | here doesn't do any harm. */ | |
4452 | immediate_quit = 1; | |
4453 | QUIT; | |
28c3eb5a | 4454 | this = emacs_read (fd, BEG_ADDR + PT_BYTE - BEG_BYTE + inserted, trytry); |
1b978129 GM |
4455 | immediate_quit = 0; |
4456 | } | |
efdc16c9 | 4457 | |
1b978129 GM |
4458 | if (this <= 0) |
4459 | { | |
4460 | how_much = this; | |
4461 | break; | |
4462 | } | |
4463 | ||
4464 | gap_size -= this; | |
4465 | ||
4466 | /* For a regular file, where TOTAL is the real size, | |
4467 | count HOW_MUCH to compare with it. | |
4468 | For a special file, where TOTAL is just a buffer size, | |
4469 | so don't bother counting in HOW_MUCH. | |
4470 | (INSERTED is where we count the number of characters inserted.) */ | |
4471 | if (! not_regular) | |
4472 | how_much += this; | |
4473 | inserted += this; | |
4474 | } | |
4475 | } | |
4476 | ||
68780e2a RS |
4477 | /* Now we have read all the file data into the gap. |
4478 | If it was empty, undo marking the buffer modified. */ | |
4479 | ||
4480 | if (inserted == 0) | |
4481 | { | |
6840d350 | 4482 | #ifdef CLASH_DETECTION |
68780e2a RS |
4483 | if (we_locked_file) |
4484 | unlock_file (current_buffer->file_truename); | |
6840d350 | 4485 | #endif |
68780e2a RS |
4486 | Vdeactivate_mark = old_Vdeactivate_mark; |
4487 | } | |
83c1cf6d RS |
4488 | else |
4489 | Vdeactivate_mark = Qt; | |
68780e2a | 4490 | |
1b978129 GM |
4491 | /* Make the text read part of the buffer. */ |
4492 | GAP_SIZE -= inserted; | |
4493 | GPT += inserted; | |
4494 | GPT_BYTE += inserted; | |
4495 | ZV += inserted; | |
4496 | ZV_BYTE += inserted; | |
4497 | Z += inserted; | |
4498 | Z_BYTE += inserted; | |
6fdaa9a0 | 4499 | |
c8a6d68a KH |
4500 | if (GAP_SIZE > 0) |
4501 | /* Put an anchor to ensure multi-byte form ends at gap. */ | |
4502 | *GPT_ADDR = 0; | |
d4b8687b | 4503 | |
68c45bf0 | 4504 | emacs_close (fd); |
6fdaa9a0 | 4505 | |
c8a6d68a KH |
4506 | /* Discard the unwind protect for closing the file. */ |
4507 | specpdl_ptr--; | |
6fdaa9a0 | 4508 | |
c8a6d68a KH |
4509 | if (how_much < 0) |
4510 | error ("IO error reading %s: %s", | |
d5db4077 | 4511 | SDATA (orig_filename), emacs_strerror (errno)); |
ec7adf26 | 4512 | |
f8569325 DL |
4513 | notfound: |
4514 | ||
db327c7e | 4515 | if (NILP (coding_system)) |
c8a6d68a | 4516 | { |
2df42e09 | 4517 | /* The coding system is not yet decided. Decide it by an |
dfe35e7b RS |
4518 | optimized method for handling `coding:' tag. |
4519 | ||
4520 | Note that we can get here only if the buffer was empty | |
4521 | before the insertion. */ | |
f736ffbf | 4522 | |
2df42e09 | 4523 | if (!NILP (Vcoding_system_for_read)) |
db327c7e | 4524 | coding_system = Vcoding_system_for_read; |
2df42e09 KH |
4525 | else |
4526 | { | |
98a7d268 KH |
4527 | /* Since we are sure that the current buffer was empty |
4528 | before the insertion, we can toggle | |
4529 | enable-multibyte-characters directly here without taking | |
9a7f80aa KH |
4530 | care of marker adjustment. By this way, we can run Lisp |
4531 | program safely before decoding the inserted text. */ | |
98a7d268 | 4532 | Lisp_Object unwind_data; |
9a7f80aa | 4533 | int count = SPECPDL_INDEX (); |
2df42e09 | 4534 | |
98a7d268 KH |
4535 | unwind_data = Fcons (current_buffer->enable_multibyte_characters, |
4536 | Fcons (current_buffer->undo_list, | |
4537 | Fcurrent_buffer ())); | |
2b89769e | 4538 | current_buffer->enable_multibyte_characters = Qnil; |
98a7d268 KH |
4539 | current_buffer->undo_list = Qt; |
4540 | record_unwind_protect (decide_coding_unwind, unwind_data); | |
4541 | ||
4542 | if (inserted > 0 && ! NILP (Vset_auto_coding_function)) | |
4543 | { | |
db327c7e | 4544 | coding_system = call2 (Vset_auto_coding_function, |
8f924df7 | 4545 | filename, make_number (inserted)); |
2df42e09 | 4546 | } |
f736ffbf | 4547 | |
db327c7e | 4548 | if (NILP (coding_system)) |
2df42e09 KH |
4549 | { |
4550 | /* If the coding system is not yet decided, check | |
4551 | file-coding-system-alist. */ | |
8f924df7 | 4552 | Lisp_Object args[6]; |
f736ffbf | 4553 | |
2df42e09 KH |
4554 | args[0] = Qinsert_file_contents, args[1] = orig_filename; |
4555 | args[2] = visit, args[3] = beg, args[4] = end, args[5] = Qnil; | |
8f924df7 KH |
4556 | coding_system = Ffind_operation_coding_system (6, args); |
4557 | if (CONSP (coding_system)) | |
4558 | coding_system = XCAR (coding_system); | |
f736ffbf | 4559 | } |
98a7d268 KH |
4560 | unbind_to (count, Qnil); |
4561 | inserted = Z_BYTE - BEG_BYTE; | |
2df42e09 | 4562 | } |
f736ffbf | 4563 | |
db327c7e KH |
4564 | if (NILP (coding_system)) |
4565 | coding_system = Qundecided; | |
4566 | else | |
4567 | CHECK_CODING_SYSTEM (coding_system); | |
f736ffbf | 4568 | |
db327c7e | 4569 | if (NILP (current_buffer->enable_multibyte_characters)) |
237a6fd2 | 4570 | /* We must suppress all character code conversion except for |
2df42e09 | 4571 | end-of-line conversion. */ |
db327c7e | 4572 | coding_system = raw_text_coding_system (coding_system); |
db327c7e KH |
4573 | setup_coding_system (coding_system, &coding); |
4574 | /* Ensure we set Vlast_coding_system_used. */ | |
4575 | set_coding_system = 1; | |
2df42e09 | 4576 | } |
f736ffbf | 4577 | |
db327c7e | 4578 | if (!NILP (visit)) |
8c3b9441 | 4579 | { |
db327c7e | 4580 | /* When we visit a file by raw-text, we change the buffer to |
9a7f80aa | 4581 | unibyte. */ |
db327c7e KH |
4582 | if (CODING_FOR_UNIBYTE (&coding) |
4583 | /* Can't do this if part of the buffer might be preserved. */ | |
4584 | && NILP (replace)) | |
4585 | /* Visiting a file with these coding system makes the buffer | |
4586 | unibyte. */ | |
4587 | current_buffer->enable_multibyte_characters = Qnil; | |
8c3b9441 KH |
4588 | } |
4589 | ||
8f924df7 | 4590 | coding.dst_multibyte = ! NILP (current_buffer->enable_multibyte_characters); |
5b359650 | 4591 | if (CODING_MAY_REQUIRE_DECODING (&coding) |
1c157f8d | 4592 | && (inserted > 0 || CODING_REQUIRE_FLUSHING (&coding))) |
2df42e09 | 4593 | { |
db327c7e KH |
4594 | move_gap_both (PT, PT_BYTE); |
4595 | GAP_SIZE += inserted; | |
4596 | ZV_BYTE -= inserted; | |
4597 | Z_BYTE -= inserted; | |
4598 | ZV -= inserted; | |
4599 | Z -= inserted; | |
4600 | decode_coding_gap (&coding, inserted, inserted); | |
4601 | inserted = coding.produced_char; | |
5b359650 | 4602 | coding_system = CODING_ID_NAME (coding.id); |
2df42e09 | 4603 | } |
db327c7e KH |
4604 | else if (inserted > 0) |
4605 | adjust_after_insert (PT, PT_BYTE, PT + inserted, PT_BYTE + inserted, | |
4606 | inserted); | |
570d7624 | 4607 | |
cf6d2357 RS |
4608 | /* Now INSERTED is measured in characters. */ |
4609 | ||
04e6f79c | 4610 | #ifdef DOS_NT |
2df42e09 KH |
4611 | /* Use the conversion type to determine buffer-file-type |
4612 | (find-buffer-file-type is now used to help determine the | |
4613 | conversion). */ | |
652a7e95 | 4614 | if ((VECTORP (CODING_ID_EOL_TYPE (coding.id)) |
f7ce9c0c | 4615 | || EQ (CODING_ID_EOL_TYPE (coding.id), Qunix)) |
2df42e09 KH |
4616 | && ! CODING_REQUIRE_DECODING (&coding)) |
4617 | current_buffer->buffer_file_type = Qt; | |
4618 | else | |
4619 | current_buffer->buffer_file_type = Qnil; | |
04e6f79c | 4620 | #endif |
570d7624 | 4621 | |
32f4334d | 4622 | handled: |
570d7624 | 4623 | |
265a9e55 | 4624 | if (!NILP (visit)) |
570d7624 | 4625 | { |
cfadd376 RS |
4626 | if (!EQ (current_buffer->undo_list, Qt)) |
4627 | current_buffer->undo_list = Qnil; | |
62bcf009 | 4628 | |
a7e82472 RS |
4629 | if (NILP (handler)) |
4630 | { | |
4631 | current_buffer->modtime = st.st_mtime; | |
b1d1b865 | 4632 | current_buffer->filename = orig_filename; |
a7e82472 | 4633 | } |
62bcf009 | 4634 | |
95385625 | 4635 | SAVE_MODIFF = MODIFF; |
570d7624 | 4636 | current_buffer->auto_save_modified = MODIFF; |
2acfd7ae | 4637 | XSETFASTINT (current_buffer->save_length, Z - BEG); |
570d7624 | 4638 | #ifdef CLASH_DETECTION |
32f4334d RS |
4639 | if (NILP (handler)) |
4640 | { | |
f471f4c2 RS |
4641 | if (!NILP (current_buffer->file_truename)) |
4642 | unlock_file (current_buffer->file_truename); | |
32f4334d RS |
4643 | unlock_file (filename); |
4644 | } | |
570d7624 | 4645 | #endif /* CLASH_DETECTION */ |
330bfe57 | 4646 | if (not_regular) |
24b1ddad KS |
4647 | xsignal2 (Qfile_error, |
4648 | build_string ("not a regular file"), orig_filename); | |
570d7624 JB |
4649 | } |
4650 | ||
b6426b03 | 4651 | if (set_coding_system) |
8f924df7 | 4652 | Vlast_coding_system_used = coding_system; |
b6426b03 | 4653 | |
2080470e | 4654 | if (! NILP (Ffboundp (Qafter_insert_file_set_coding))) |
b6426b03 | 4655 | { |
37a3c774 KH |
4656 | insval = call2 (Qafter_insert_file_set_coding, make_number (inserted), |
4657 | visit); | |
b6426b03 KH |
4658 | if (! NILP (insval)) |
4659 | { | |
4660 | CHECK_NUMBER (insval); | |
4661 | inserted = XFASTINT (insval); | |
4662 | } | |
4663 | } | |
4664 | ||
0d420e88 | 4665 | /* Decode file format */ |
c8a6d68a | 4666 | if (inserted > 0) |
0d420e88 | 4667 | { |
6f2528d8 MR |
4668 | /* Don't run point motion or modification hooks when decoding. */ |
4669 | int count = SPECPDL_INDEX (); | |
4670 | specbind (Qinhibit_point_motion_hooks, Qt); | |
4671 | specbind (Qinhibit_modification_hooks, Qt); | |
4672 | ||
4673 | /* Save old undo list and don't record undo for decoding. */ | |
4674 | old_undo = current_buffer->undo_list; | |
4675 | current_buffer->undo_list = Qt; | |
efdc16c9 | 4676 | |
6f2528d8 | 4677 | if (NILP (replace)) |
ed8e506f | 4678 | { |
6f2528d8 MR |
4679 | insval = call3 (Qformat_decode, |
4680 | Qnil, make_number (inserted), visit); | |
4681 | CHECK_NUMBER (insval); | |
4682 | inserted = XFASTINT (insval); | |
4683 | } | |
4684 | else | |
4685 | { | |
4686 | /* If REPLACE is non-nil and we succeeded in not replacing the | |
4687 | beginning or end of the buffer text with the file's contents, | |
4688 | call format-decode with `point' positioned at the beginning of | |
4689 | the buffer and `inserted' equalling the number of characters | |
4690 | in the buffer. Otherwise, format-decode might fail to | |
4691 | correctly analyze the beginning or end of the buffer. Hence | |
4692 | we temporarily save `point' and `inserted' here and restore | |
4693 | `point' iff format-decode did not insert or delete any text. | |
4694 | Otherwise we leave `point' at point-min. */ | |
4695 | int opoint = PT; | |
4696 | int opoint_byte = PT_BYTE; | |
4697 | int oinserted = ZV - BEGV; | |
cac4219c | 4698 | int ochars_modiff = CHARS_MODIFF; |
1f163f28 MA |
4699 | |
4700 | TEMP_SET_PT_BOTH (BEGV, BEGV_BYTE); | |
6f2528d8 MR |
4701 | insval = call3 (Qformat_decode, |
4702 | Qnil, make_number (oinserted), visit); | |
4703 | CHECK_NUMBER (insval); | |
cac4219c MR |
4704 | if (ochars_modiff == CHARS_MODIFF) |
4705 | /* format_decode didn't modify buffer's characters => move | |
4706 | point back to position before inserted text and leave | |
4707 | value of inserted alone. */ | |
6f2528d8 | 4708 | SET_PT_BOTH (opoint, opoint_byte); |
cac4219c MR |
4709 | else |
4710 | /* format_decode modified buffer's characters => consider | |
4711 | entire buffer changed and leave point at point-min. */ | |
4712 | inserted = XFASTINT (insval); | |
ed8e506f | 4713 | } |
efdc16c9 | 4714 | |
6f2528d8 MR |
4715 | /* For consistency with format-decode call these now iff inserted > 0 |
4716 | (martin 2007-06-28) */ | |
4717 | p = Vafter_insert_file_functions; | |
4718 | while (CONSP (p)) | |
4719 | { | |
4720 | if (NILP (replace)) | |
4721 | { | |
4722 | insval = call1 (XCAR (p), make_number (inserted)); | |
4723 | if (!NILP (insval)) | |
4724 | { | |
4725 | CHECK_NUMBER (insval); | |
4726 | inserted = XFASTINT (insval); | |
4727 | } | |
4728 | } | |
4729 | else | |
4730 | { | |
4731 | /* For the rationale of this see the comment on format-decode above. */ | |
4732 | int opoint = PT; | |
4733 | int opoint_byte = PT_BYTE; | |
4734 | int oinserted = ZV - BEGV; | |
cac4219c | 4735 | int ochars_modiff = CHARS_MODIFF; |
1f163f28 | 4736 | |
6f2528d8 MR |
4737 | TEMP_SET_PT_BOTH (BEGV, BEGV_BYTE); |
4738 | insval = call1 (XCAR (p), make_number (oinserted)); | |
4739 | if (!NILP (insval)) | |
4740 | { | |
4741 | CHECK_NUMBER (insval); | |
cac4219c MR |
4742 | if (ochars_modiff == CHARS_MODIFF) |
4743 | /* after_insert_file_functions didn't modify | |
4744 | buffer's characters => move point back to | |
4745 | position before inserted text and leave value of | |
4746 | inserted alone. */ | |
6f2528d8 | 4747 | SET_PT_BOTH (opoint, opoint_byte); |
cac4219c MR |
4748 | else |
4749 | /* after_insert_file_functions did modify buffer's | |
4750 | characters => consider entire buffer changed and | |
4751 | leave point at point-min. */ | |
4752 | inserted = XFASTINT (insval); | |
6f2528d8 MR |
4753 | } |
4754 | } | |
4755 | ||
4756 | QUIT; | |
4757 | p = XCDR (p); | |
ed8e506f | 4758 | } |
efdc16c9 | 4759 | |
6f2528d8 MR |
4760 | if (NILP (visit)) |
4761 | { | |
4762 | Lisp_Object lbeg, lend; | |
4763 | XSETINT (lbeg, PT); | |
4764 | XSETINT (lend, PT + inserted); | |
4765 | if (CONSP (old_undo)) | |
4766 | { | |
4767 | Lisp_Object tem = XCAR (old_undo); | |
4768 | if (CONSP (tem) && INTEGERP (XCAR (tem)) && | |
1bc99c9c | 4769 | INTEGERP (XCDR (tem)) && EQ (XCAR (tem), lbeg)) |
6f2528d8 MR |
4770 | /* In the non-visiting case record only the final insertion. */ |
4771 | current_buffer->undo_list = | |
4772 | Fcons (Fcons (lbeg, lend), Fcdr (old_undo)); | |
4773 | } | |
4774 | } | |
6f2528d8 | 4775 | else |
1bc99c9c SM |
4776 | /* If undo_list was Qt before, keep it that way. |
4777 | Otherwise start with an empty undo_list. */ | |
4778 | current_buffer->undo_list = EQ (old_undo, Qt) ? Qt : Qnil; | |
efdc16c9 | 4779 | |
6f2528d8 | 4780 | unbind_to (count, Qnil); |
0d420e88 BG |
4781 | } |
4782 | ||
0342d8c5 RS |
4783 | /* Call after-change hooks for the inserted text, aside from the case |
4784 | of normal visiting (not with REPLACE), which is done in a new buffer | |
4785 | "before" the buffer is changed. */ | |
c8a6d68a | 4786 | if (inserted > 0 && total > 0 |
0342d8c5 | 4787 | && (NILP (visit) || !NILP (replace))) |
ce51c54c KH |
4788 | { |
4789 | signal_after_change (PT, 0, inserted); | |
4790 | update_compositions (PT, PT, CHECK_BORDER); | |
4791 | } | |
b56567b5 | 4792 | |
f8569325 DL |
4793 | if (!NILP (visit) |
4794 | && current_buffer->modtime == -1) | |
4795 | { | |
4796 | /* If visiting nonexistent file, return nil. */ | |
4797 | report_file_error ("Opening input file", Fcons (orig_filename, Qnil)); | |
d6a3cc15 RS |
4798 | } |
4799 | ||
1b978129 GM |
4800 | if (read_quit) |
4801 | Fsignal (Qquit, Qnil); | |
4802 | ||
ec7adf26 | 4803 | /* ??? Retval needs to be dealt with in all cases consistently. */ |
a1d2b64a | 4804 | if (NILP (val)) |
b1d1b865 | 4805 | val = Fcons (orig_filename, |
a1d2b64a RS |
4806 | Fcons (make_number (inserted), |
4807 | Qnil)); | |
4808 | ||
4809 | RETURN_UNGCPRO (unbind_to (count, val)); | |
570d7624 | 4810 | } |
7fded690 | 4811 | \f |
236a12f2 | 4812 | static Lisp_Object build_annotations P_ ((Lisp_Object, Lisp_Object)); |
d6a3cc15 | 4813 | |
6fc6f94b | 4814 | /* If build_annotations switched buffers, switch back to BUF. |
6fdaa9a0 KH |
4815 | Kill the temporary buffer that was selected in the meantime. |
4816 | ||
4817 | Since this kill only the last temporary buffer, some buffers remain | |
4818 | not killed if build_annotations switched buffers more than once. | |
4819 | -- K.Handa */ | |
6fc6f94b | 4820 | |
199607e4 | 4821 | static Lisp_Object |
6fc6f94b RS |
4822 | build_annotations_unwind (buf) |
4823 | Lisp_Object buf; | |
4824 | { | |
4825 | Lisp_Object tembuf; | |
4826 | ||
4827 | if (XBUFFER (buf) == current_buffer) | |
4828 | return Qnil; | |
4829 | tembuf = Fcurrent_buffer (); | |
4830 | Fset_buffer (buf); | |
4831 | Fkill_buffer (tembuf); | |
4832 | return Qnil; | |
4833 | } | |
4834 | ||
7c82a4a9 SM |
4835 | /* Decide the coding-system to encode the data with. */ |
4836 | ||
c934586d | 4837 | static Lisp_Object |
7c82a4a9 SM |
4838 | choose_write_coding_system (start, end, filename, |
4839 | append, visit, lockname, coding) | |
4840 | Lisp_Object start, end, filename, append, visit, lockname; | |
4841 | struct coding_system *coding; | |
4842 | { | |
4843 | Lisp_Object val; | |
75421805 | 4844 | Lisp_Object eol_parent = Qnil; |
7c82a4a9 | 4845 | |
6b61353c KH |
4846 | if (auto_saving |
4847 | && NILP (Fstring_equal (current_buffer->filename, | |
4848 | current_buffer->auto_save_file_name))) | |
75421805 KH |
4849 | { |
4850 | val = Qutf_8_emacs; | |
4851 | eol_parent = Qunix; | |
4852 | } | |
7c82a4a9 | 4853 | else if (!NILP (Vcoding_system_for_write)) |
42b01e1e KH |
4854 | { |
4855 | val = Vcoding_system_for_write; | |
4856 | if (coding_system_require_warning | |
4857 | && !NILP (Ffboundp (Vselect_safe_coding_system_function))) | |
4858 | /* Confirm that VAL can surely encode the current region. */ | |
4859 | val = call5 (Vselect_safe_coding_system_function, | |
4860 | start, end, Fcons (Qt, Fcons (val, Qnil)), | |
4861 | Qnil, filename); | |
4862 | } | |
7c82a4a9 SM |
4863 | else |
4864 | { | |
4865 | /* If the variable `buffer-file-coding-system' is set locally, | |
4866 | it means that the file was read with some kind of code | |
4867 | conversion or the variable is explicitly set by users. We | |
4868 | had better write it out with the same coding system even if | |
4869 | `enable-multibyte-characters' is nil. | |
4870 | ||
4871 | If it is not set locally, we anyway have to convert EOL | |
4872 | format if the default value of `buffer-file-coding-system' | |
4873 | tells that it is not Unix-like (LF only) format. */ | |
4874 | int using_default_coding = 0; | |
4875 | int force_raw_text = 0; | |
4876 | ||
4877 | val = current_buffer->buffer_file_coding_system; | |
4878 | if (NILP (val) | |
4879 | || NILP (Flocal_variable_p (Qbuffer_file_coding_system, Qnil))) | |
4880 | { | |
4881 | val = Qnil; | |
4882 | if (NILP (current_buffer->enable_multibyte_characters)) | |
4883 | force_raw_text = 1; | |
4884 | } | |
efdc16c9 | 4885 | |
7c82a4a9 SM |
4886 | if (NILP (val)) |
4887 | { | |
4888 | /* Check file-coding-system-alist. */ | |
4889 | Lisp_Object args[7], coding_systems; | |
4890 | ||
4891 | args[0] = Qwrite_region; args[1] = start; args[2] = end; | |
4892 | args[3] = filename; args[4] = append; args[5] = visit; | |
4893 | args[6] = lockname; | |
4894 | coding_systems = Ffind_operation_coding_system (7, args); | |
4895 | if (CONSP (coding_systems) && !NILP (XCDR (coding_systems))) | |
4896 | val = XCDR (coding_systems); | |
4897 | } | |
4898 | ||
c934586d | 4899 | if (NILP (val)) |
7c82a4a9 SM |
4900 | { |
4901 | /* If we still have not decided a coding system, use the | |
4902 | default value of buffer-file-coding-system. */ | |
4903 | val = current_buffer->buffer_file_coding_system; | |
4904 | using_default_coding = 1; | |
4905 | } | |
efdc16c9 | 4906 | |
db327c7e KH |
4907 | if (! NILP (val) && ! force_raw_text) |
4908 | { | |
4909 | Lisp_Object spec, attrs; | |
4910 | ||
4911 | CHECK_CODING_SYSTEM_GET_SPEC (val, spec); | |
4912 | attrs = AREF (spec, 0); | |
4913 | if (EQ (CODING_ATTR_TYPE (attrs), Qraw_text)) | |
4914 | force_raw_text = 1; | |
4915 | } | |
4916 | ||
7c82a4a9 SM |
4917 | if (!force_raw_text |
4918 | && !NILP (Ffboundp (Vselect_safe_coding_system_function))) | |
4919 | /* Confirm that VAL can surely encode the current region. */ | |
905a4276 PJ |
4920 | val = call5 (Vselect_safe_coding_system_function, |
4921 | start, end, val, Qnil, filename); | |
7c82a4a9 | 4922 | |
db327c7e KH |
4923 | /* If the decided coding-system doesn't specify end-of-line |
4924 | format, we use that of | |
4925 | `default-buffer-file-coding-system'. */ | |
c934586d KH |
4926 | if (! using_default_coding |
4927 | && ! NILP (buffer_defaults.buffer_file_coding_system)) | |
db327c7e KH |
4928 | val = (coding_inherit_eol_type |
4929 | (val, buffer_defaults.buffer_file_coding_system)); | |
7c82a4a9 | 4930 | |
db327c7e KH |
4931 | /* If we decide not to encode text, use `raw-text' or one of its |
4932 | subsidiaries. */ | |
7c82a4a9 | 4933 | if (force_raw_text) |
db327c7e | 4934 | val = raw_text_coding_system (val); |
7c82a4a9 SM |
4935 | } |
4936 | ||
75421805 | 4937 | val = coding_inherit_eol_type (val, eol_parent); |
c934586d | 4938 | setup_coding_system (val, coding); |
7c82a4a9 | 4939 | |
7c82a4a9 SM |
4940 | if (!STRINGP (start) && !NILP (current_buffer->selective_display)) |
4941 | coding->mode |= CODING_MODE_SELECTIVE_DISPLAY; | |
c934586d | 4942 | return val; |
7c82a4a9 SM |
4943 | } |
4944 | ||
de1d0127 | 4945 | DEFUN ("write-region", Fwrite_region, Swrite_region, 3, 7, |
8c1a1077 PJ |
4946 | "r\nFWrite region to file: \ni\ni\ni\np", |
4947 | doc: /* Write current region into specified file. | |
c2efea25 RS |
4948 | When called from a program, requires three arguments: |
4949 | START, END and FILENAME. START and END are normally buffer positions | |
4950 | specifying the part of the buffer to write. | |
4951 | If START is nil, that means to use the entire buffer contents. | |
4952 | If START is a string, then output that string to the file | |
4953 | instead of any buffer contents; END is ignored. | |
4954 | ||
8c1a1077 PJ |
4955 | Optional fourth argument APPEND if non-nil means |
4956 | append to existing file contents (if any). If it is an integer, | |
4957 | seek to that offset in the file before writing. | |
36e50520 | 4958 | Optional fifth argument VISIT, if t or a string, means |
8c1a1077 PJ |
4959 | set the last-save-file-modtime of buffer to this file's modtime |
4960 | and mark buffer not modified. | |
4961 | If VISIT is a string, it is a second file name; | |
4962 | the output goes to FILENAME, but the buffer is marked as visiting VISIT. | |
4963 | VISIT is also the file name to lock and unlock for clash detection. | |
4964 | If VISIT is neither t nor nil nor a string, | |
5f4e6aa9 | 4965 | that means do not display the \"Wrote file\" message. |
8c1a1077 PJ |
4966 | The optional sixth arg LOCKNAME, if non-nil, specifies the name to |
4967 | use for locking and unlocking, overriding FILENAME and VISIT. | |
4968 | The optional seventh arg MUSTBENEW, if non-nil, insists on a check | |
4969 | for an existing file with the same name. If MUSTBENEW is `excl', | |
4970 | that means to get an error if the file already exists; never overwrite. | |
4971 | If MUSTBENEW is neither nil nor `excl', that means ask for | |
4972 | confirmation before overwriting, but do go ahead and overwrite the file | |
4973 | if the user confirms. | |
8c1a1077 PJ |
4974 | |
4975 | This does code conversion according to the value of | |
4976 | `coding-system-for-write', `buffer-file-coding-system', or | |
4977 | `file-coding-system-alist', and sets the variable | |
4978 | `last-coding-system-used' to the coding system actually used. */) | |
4979 | (start, end, filename, append, visit, lockname, mustbenew) | |
f7b4065f | 4980 | Lisp_Object start, end, filename, append, visit, lockname, mustbenew; |
570d7624 JB |
4981 | { |
4982 | register int desc; | |
4983 | int failure; | |
6bbd7a29 | 4984 | int save_errno = 0; |
19290c65 | 4985 | const unsigned char *fn; |
570d7624 | 4986 | struct stat st; |
aed13378 | 4987 | int count = SPECPDL_INDEX (); |
6fc6f94b | 4988 | int count1; |
570d7624 | 4989 | #ifdef VMS |
5e570b75 | 4990 | unsigned char *fname = 0; /* If non-0, original filename (must rename) */ |
570d7624 | 4991 | #endif /* VMS */ |
3eac9910 | 4992 | Lisp_Object handler; |
4ad827c5 | 4993 | Lisp_Object visit_file; |
65b7d3e7 | 4994 | Lisp_Object annotations; |
b1d1b865 | 4995 | Lisp_Object encoded_filename; |
d3a67486 SM |
4996 | int visiting = (EQ (visit, Qt) || STRINGP (visit)); |
4997 | int quietly = !NILP (visit); | |
7204a979 | 4998 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5; |
6fc6f94b | 4999 | struct buffer *given_buffer; |
5e570b75 | 5000 | #ifdef DOS_NT |
fa228724 | 5001 | int buffer_file_type = O_BINARY; |
5e570b75 | 5002 | #endif /* DOS_NT */ |
6fdaa9a0 | 5003 | struct coding_system coding; |
570d7624 | 5004 | |
d3a67486 | 5005 | if (current_buffer->base_buffer && visiting) |
95385625 RS |
5006 | error ("Cannot do file visiting in an indirect buffer"); |
5007 | ||
561cb8e1 | 5008 | if (!NILP (start) && !STRINGP (start)) |
570d7624 JB |
5009 | validate_region (&start, &end); |
5010 | ||
95c1c901 | 5011 | visit_file = Qnil; |
59fac292 | 5012 | GCPRO5 (start, filename, visit, visit_file, lockname); |
b56567b5 | 5013 | |
570d7624 | 5014 | filename = Fexpand_file_name (filename, Qnil); |
de1d0127 | 5015 | |
236a12f2 | 5016 | if (!NILP (mustbenew) && !EQ (mustbenew, Qexcl)) |
b8b29dc9 | 5017 | barf_or_query_if_file_exists (filename, "overwrite", 1, 0, 1); |
de1d0127 | 5018 | |
561cb8e1 | 5019 | if (STRINGP (visit)) |
e5176bae | 5020 | visit_file = Fexpand_file_name (visit, Qnil); |
4ad827c5 RS |
5021 | else |
5022 | visit_file = filename; | |
5023 | ||
7204a979 RS |
5024 | if (NILP (lockname)) |
5025 | lockname = visit_file; | |
5026 | ||
65b7d3e7 RS |
5027 | annotations = Qnil; |
5028 | ||
32f4334d RS |
5029 | /* If the file name has special constructs in it, |
5030 | call the corresponding file handler. */ | |
49307295 | 5031 | handler = Ffind_file_name_handler (filename, Qwrite_region); |
b56ad927 | 5032 | /* If FILENAME has no handler, see if VISIT has one. */ |
93c30b5f | 5033 | if (NILP (handler) && STRINGP (visit)) |
199607e4 | 5034 | handler = Ffind_file_name_handler (visit, Qwrite_region); |
3eac9910 | 5035 | |
32f4334d RS |
5036 | if (!NILP (handler)) |
5037 | { | |
32f4334d | 5038 | Lisp_Object val; |
51cf6d37 RS |
5039 | val = call6 (handler, Qwrite_region, start, end, |
5040 | filename, append, visit); | |
32f4334d | 5041 | |
d6a3cc15 | 5042 | if (visiting) |
32f4334d | 5043 | { |
95385625 | 5044 | SAVE_MODIFF = MODIFF; |
2acfd7ae | 5045 | XSETFASTINT (current_buffer->save_length, Z - BEG); |
3b7792ed | 5046 | current_buffer->filename = visit_file; |
32f4334d | 5047 | } |
09121adc | 5048 | UNGCPRO; |
32f4334d RS |
5049 | return val; |
5050 | } | |
5051 | ||
4a38de71 KH |
5052 | record_unwind_protect (save_restriction_restore, save_restriction_save ()); |
5053 | ||
561cb8e1 RS |
5054 | /* Special kludge to simplify auto-saving. */ |
5055 | if (NILP (start)) | |
5056 | { | |
2acfd7ae KH |
5057 | XSETFASTINT (start, BEG); |
5058 | XSETFASTINT (end, Z); | |
4a38de71 | 5059 | Fwiden (); |
561cb8e1 RS |
5060 | } |
5061 | ||
6fc6f94b | 5062 | record_unwind_protect (build_annotations_unwind, Fcurrent_buffer ()); |
aed13378 | 5063 | count1 = SPECPDL_INDEX (); |
6fc6f94b RS |
5064 | |
5065 | given_buffer = current_buffer; | |
bf3428a1 RS |
5066 | |
5067 | if (!STRINGP (start)) | |
236a12f2 | 5068 | { |
bf3428a1 RS |
5069 | annotations = build_annotations (start, end); |
5070 | ||
5071 | if (current_buffer != given_buffer) | |
5072 | { | |
5073 | XSETFASTINT (start, BEGV); | |
5074 | XSETFASTINT (end, ZV); | |
5075 | } | |
236a12f2 SM |
5076 | } |
5077 | ||
5078 | UNGCPRO; | |
5079 | ||
5080 | GCPRO5 (start, filename, annotations, visit_file, lockname); | |
5081 | ||
59fac292 SM |
5082 | /* Decide the coding-system to encode the data with. |
5083 | We used to make this choice before calling build_annotations, but that | |
5084 | leads to problems when a write-annotate-function takes care of | |
5085 | unsavable chars (as was the case with X-Symbol). */ | |
c934586d KH |
5086 | Vlast_coding_system_used |
5087 | = choose_write_coding_system (start, end, filename, | |
5088 | append, visit, lockname, &coding); | |
d6a3cc15 | 5089 | |
570d7624 JB |
5090 | #ifdef CLASH_DETECTION |
5091 | if (!auto_saving) | |
84f6296a | 5092 | { |
a9171faa | 5093 | #if 0 /* This causes trouble for GNUS. */ |
84f6296a RS |
5094 | /* If we've locked this file for some other buffer, |
5095 | query before proceeding. */ | |
5096 | if (!visiting && EQ (Ffile_locked_p (lockname), Qt)) | |
bffd00b0 | 5097 | call2 (intern ("ask-user-about-lock"), filename, Vuser_login_name); |
a9171faa | 5098 | #endif |
84f6296a RS |
5099 | |
5100 | lock_file (lockname); | |
5101 | } | |
570d7624 JB |
5102 | #endif /* CLASH_DETECTION */ |
5103 | ||
b1d1b865 RS |
5104 | encoded_filename = ENCODE_FILE (filename); |
5105 | ||
d5db4077 | 5106 | fn = SDATA (encoded_filename); |
570d7624 | 5107 | desc = -1; |
265a9e55 | 5108 | if (!NILP (append)) |
5e570b75 | 5109 | #ifdef DOS_NT |
68c45bf0 | 5110 | desc = emacs_open (fn, O_WRONLY | buffer_file_type, 0); |
5e570b75 | 5111 | #else /* not DOS_NT */ |
68c45bf0 | 5112 | desc = emacs_open (fn, O_WRONLY, 0); |
5e570b75 | 5113 | #endif /* not DOS_NT */ |
570d7624 | 5114 | |
b1d1b865 | 5115 | if (desc < 0 && (NILP (append) || errno == ENOENT)) |
570d7624 | 5116 | #ifdef VMS |
5e570b75 | 5117 | if (auto_saving) /* Overwrite any previous version of autosave file */ |
570d7624 | 5118 | { |
5e570b75 | 5119 | vms_truncate (fn); /* if fn exists, truncate to zero length */ |
68c45bf0 | 5120 | desc = emacs_open (fn, O_RDWR, 0); |
570d7624 | 5121 | if (desc < 0) |
561cb8e1 | 5122 | desc = creat_copy_attrs (STRINGP (current_buffer->filename) |
d5db4077 | 5123 | ? SDATA (current_buffer->filename) : 0, |
b72dea2a | 5124 | fn); |
570d7624 | 5125 | } |
5e570b75 | 5126 | else /* Write to temporary name and rename if no errors */ |
570d7624 JB |
5127 | { |
5128 | Lisp_Object temp_name; | |
5129 | temp_name = Ffile_name_directory (filename); | |
5130 | ||
265a9e55 | 5131 | if (!NILP (temp_name)) |
570d7624 JB |
5132 | { |
5133 | temp_name = Fmake_temp_name (concat2 (temp_name, | |
5134 | build_string ("$$SAVE$$"))); | |
d5db4077 KR |
5135 | fname = SDATA (filename); |
5136 | fn = SDATA (temp_name); | |
570d7624 JB |
5137 | desc = creat_copy_attrs (fname, fn); |
5138 | if (desc < 0) | |
5139 | { | |
5140 | /* If we can't open the temporary file, try creating a new | |
5141 | version of the original file. VMS "creat" creates a | |
5142 | new version rather than truncating an existing file. */ | |
5143 | fn = fname; | |
5144 | fname = 0; | |
5145 | desc = creat (fn, 0666); | |
5146 | #if 0 /* This can clobber an existing file and fail to replace it, | |
5147 | if the user runs out of space. */ | |
5148 | if (desc < 0) | |
5149 | { | |
5150 | /* We can't make a new version; | |
5151 | try to truncate and rewrite existing version if any. */ | |
5152 | vms_truncate (fn); | |
68c45bf0 | 5153 | desc = emacs_open (fn, O_RDWR, 0); |
570d7624 JB |
5154 | } |
5155 | #endif | |
5156 | } | |
5157 | } | |
5158 | else | |
5159 | desc = creat (fn, 0666); | |
5160 | } | |
5161 | #else /* not VMS */ | |
5e570b75 | 5162 | #ifdef DOS_NT |
68c45bf0 | 5163 | desc = emacs_open (fn, |
95522746 GM |
5164 | O_WRONLY | O_CREAT | buffer_file_type |
5165 | | (EQ (mustbenew, Qexcl) ? O_EXCL : O_TRUNC), | |
68c45bf0 | 5166 | S_IREAD | S_IWRITE); |
5e570b75 | 5167 | #else /* not DOS_NT */ |
68c45bf0 | 5168 | desc = emacs_open (fn, O_WRONLY | O_TRUNC | O_CREAT |
7c752c80 | 5169 | | (EQ (mustbenew, Qexcl) ? O_EXCL : 0), |
68c45bf0 | 5170 | auto_saving ? auto_save_mode_bits : 0666); |
5e570b75 | 5171 | #endif /* not DOS_NT */ |
570d7624 JB |
5172 | #endif /* not VMS */ |
5173 | ||
5174 | if (desc < 0) | |
5175 | { | |
5176 | #ifdef CLASH_DETECTION | |
5177 | save_errno = errno; | |
7204a979 | 5178 | if (!auto_saving) unlock_file (lockname); |
570d7624 JB |
5179 | errno = save_errno; |
5180 | #endif /* CLASH_DETECTION */ | |
43fb7d9a | 5181 | UNGCPRO; |
570d7624 JB |
5182 | report_file_error ("Opening output file", Fcons (filename, Qnil)); |
5183 | } | |
5184 | ||
5185 | record_unwind_protect (close_file_unwind, make_number (desc)); | |
5186 | ||
c1c4693e | 5187 | if (!NILP (append) && !NILP (Ffile_regular_p (filename))) |
43fb7d9a DL |
5188 | { |
5189 | long ret; | |
efdc16c9 | 5190 | |
43fb7d9a DL |
5191 | if (NUMBERP (append)) |
5192 | ret = lseek (desc, XINT (append), 1); | |
5193 | else | |
5194 | ret = lseek (desc, 0, 2); | |
5195 | if (ret < 0) | |
5196 | { | |
570d7624 | 5197 | #ifdef CLASH_DETECTION |
43fb7d9a | 5198 | if (!auto_saving) unlock_file (lockname); |
570d7624 | 5199 | #endif /* CLASH_DETECTION */ |
43fb7d9a DL |
5200 | UNGCPRO; |
5201 | report_file_error ("Lseek error", Fcons (filename, Qnil)); | |
5202 | } | |
5203 | } | |
efdc16c9 | 5204 | |
43fb7d9a | 5205 | UNGCPRO; |
570d7624 JB |
5206 | |
5207 | #ifdef VMS | |
5208 | /* | |
5209 | * Kludge Warning: The VMS C RTL likes to insert carriage returns | |
5210 | * if we do writes that don't end with a carriage return. Furthermore | |
5211 | * it cannot handle writes of more then 16K. The modified | |
5212 | * version of "sys_write" in SYSDEP.C (see comment there) copes with | |
e0f24100 | 5213 | * this EXCEPT for the last record (if it doesn't end with a carriage |
570d7624 JB |
5214 | * return). This implies that if your buffer doesn't end with a carriage |
5215 | * return, you get one free... tough. However it also means that if | |
5216 | * we make two calls to sys_write (a la the following code) you can | |
5217 | * get one at the gap as well. The easiest way to fix this (honest) | |
5218 | * is to move the gap to the next newline (or the end of the buffer). | |
5219 | * Thus this change. | |
5220 | * | |
5221 | * Yech! | |
5222 | */ | |
5223 | if (GPT > BEG && GPT_ADDR[-1] != '\n') | |
5224 | move_gap (find_next_newline (GPT, 1)); | |
cdfb0f1d | 5225 | #else |
db327c7e KH |
5226 | #if 0 |
5227 | /* The new encoding routine doesn't require the following. */ | |
5228 | ||
cdfb0f1d KH |
5229 | /* Whether VMS or not, we must move the gap to the next of newline |
5230 | when we must put designation sequences at beginning of line. */ | |
5231 | if (INTEGERP (start) | |
5232 | && coding.type == coding_type_iso2022 | |
5233 | && coding.flags & CODING_FLAG_ISO_DESIGNATE_AT_BOL | |
5234 | && GPT > BEG && GPT_ADDR[-1] != '\n') | |
ec7adf26 RS |
5235 | { |
5236 | int opoint = PT, opoint_byte = PT_BYTE; | |
5237 | scan_newline (PT, PT_BYTE, ZV, ZV_BYTE, 1, 0); | |
5238 | move_gap_both (PT, PT_BYTE); | |
5239 | SET_PT_BOTH (opoint, opoint_byte); | |
5240 | } | |
db327c7e | 5241 | #endif |
570d7624 JB |
5242 | #endif |
5243 | ||
5244 | failure = 0; | |
5245 | immediate_quit = 1; | |
5246 | ||
561cb8e1 | 5247 | if (STRINGP (start)) |
570d7624 | 5248 | { |
d5db4077 | 5249 | failure = 0 > a_write (desc, start, 0, SCHARS (start), |
ce51c54c | 5250 | &annotations, &coding); |
570d7624 JB |
5251 | save_errno = errno; |
5252 | } | |
5253 | else if (XINT (start) != XINT (end)) | |
5254 | { | |
db327c7e KH |
5255 | failure = 0 > a_write (desc, Qnil, |
5256 | XINT (start), XINT (end) - XINT (start), | |
5257 | &annotations, &coding); | |
5258 | save_errno = errno; | |
69f6e679 RS |
5259 | } |
5260 | else | |
5261 | { | |
5262 | /* If file was empty, still need to write the annotations */ | |
c8a6d68a | 5263 | coding.mode |= CODING_MODE_LAST_BLOCK; |
ce51c54c | 5264 | failure = 0 > a_write (desc, Qnil, XINT (end), 0, &annotations, &coding); |
6fdaa9a0 KH |
5265 | save_errno = errno; |
5266 | } | |
5267 | ||
c8a6d68a KH |
5268 | if (CODING_REQUIRE_FLUSHING (&coding) |
5269 | && !(coding.mode & CODING_MODE_LAST_BLOCK) | |
1354debd | 5270 | && ! failure) |
6fdaa9a0 KH |
5271 | { |
5272 | /* We have to flush out a data. */ | |
c8a6d68a | 5273 | coding.mode |= CODING_MODE_LAST_BLOCK; |
db327c7e | 5274 | failure = 0 > e_write (desc, Qnil, 1, 1, &coding); |
69f6e679 | 5275 | save_errno = errno; |
570d7624 JB |
5276 | } |
5277 | ||
5278 | immediate_quit = 0; | |
5279 | ||
6e23c83e | 5280 | #ifdef HAVE_FSYNC |
570d7624 JB |
5281 | /* Note fsync appears to change the modtime on BSD4.2 (both vax and sun). |
5282 | Disk full in NFS may be reported here. */ | |
1daffa1c RS |
5283 | /* mib says that closing the file will try to write as fast as NFS can do |
5284 | it, and that means the fsync here is not crucial for autosave files. */ | |
ccf61795 | 5285 | if (!auto_saving && !write_region_inhibit_fsync && fsync (desc) < 0) |
cb33c142 | 5286 | { |
6cff77fd AS |
5287 | /* If fsync fails with EINTR, don't treat that as serious. Also |
5288 | ignore EINVAL which happens when fsync is not supported on this | |
5289 | file. */ | |
5290 | if (errno != EINTR && errno != EINVAL) | |
cb33c142 KH |
5291 | failure = 1, save_errno = errno; |
5292 | } | |
570d7624 JB |
5293 | #endif |
5294 | ||
199607e4 | 5295 | /* Spurious "file has changed on disk" warnings have been |
570d7624 JB |
5296 | observed on Suns as well. |
5297 | It seems that `close' can change the modtime, under nfs. | |
5298 | ||
5299 | (This has supposedly been fixed in Sunos 4, | |
5300 | but who knows about all the other machines with NFS?) */ | |
5301 | #if 0 | |
5302 | ||
e39a993c | 5303 | /* On VMS, must do the stat after the close |
570d7624 JB |
5304 | since closing changes the modtime. */ |
5305 | #ifndef VMS | |
570d7624 JB |
5306 | /* Recall that #if defined does not work on VMS. */ |
5307 | #define FOO | |
5308 | fstat (desc, &st); | |
5309 | #endif | |
570d7624 JB |
5310 | #endif |
5311 | ||
5312 | /* NFS can report a write failure now. */ | |
68c45bf0 | 5313 | if (emacs_close (desc) < 0) |
570d7624 JB |
5314 | failure = 1, save_errno = errno; |
5315 | ||
5316 | #ifdef VMS | |
5317 | /* If we wrote to a temporary name and had no errors, rename to real name. */ | |
5318 | if (fname) | |
5319 | { | |
5320 | if (!failure) | |
5321 | failure = (rename (fn, fname) != 0), save_errno = errno; | |
5322 | fn = fname; | |
5323 | } | |
5324 | #endif /* VMS */ | |
5325 | ||
5326 | #ifndef FOO | |
5327 | stat (fn, &st); | |
5328 | #endif | |
6fc6f94b RS |
5329 | /* Discard the unwind protect for close_file_unwind. */ |
5330 | specpdl_ptr = specpdl + count1; | |
5331 | /* Restore the original current buffer. */ | |
98295b48 | 5332 | visit_file = unbind_to (count, visit_file); |
570d7624 JB |
5333 | |
5334 | #ifdef CLASH_DETECTION | |
5335 | if (!auto_saving) | |
7204a979 | 5336 | unlock_file (lockname); |
570d7624 JB |
5337 | #endif /* CLASH_DETECTION */ |
5338 | ||
5339 | /* Do this before reporting IO error | |
5340 | to avoid a "file has changed on disk" warning on | |
5341 | next attempt to save. */ | |
d6a3cc15 | 5342 | if (visiting) |
570d7624 JB |
5343 | current_buffer->modtime = st.st_mtime; |
5344 | ||
5345 | if (failure) | |
d5db4077 | 5346 | error ("IO error writing %s: %s", SDATA (filename), |
68c45bf0 | 5347 | emacs_strerror (save_errno)); |
570d7624 | 5348 | |
d6a3cc15 | 5349 | if (visiting) |
570d7624 | 5350 | { |
95385625 | 5351 | SAVE_MODIFF = MODIFF; |
2acfd7ae | 5352 | XSETFASTINT (current_buffer->save_length, Z - BEG); |
3b7792ed | 5353 | current_buffer->filename = visit_file; |
f4226e89 | 5354 | update_mode_lines++; |
570d7624 | 5355 | } |
d6a3cc15 | 5356 | else if (quietly) |
6b61353c KH |
5357 | { |
5358 | if (auto_saving | |
5359 | && ! NILP (Fstring_equal (current_buffer->filename, | |
5360 | current_buffer->auto_save_file_name))) | |
5361 | SAVE_MODIFF = MODIFF; | |
5362 | ||
5363 | return Qnil; | |
5364 | } | |
570d7624 JB |
5365 | |
5366 | if (!auto_saving) | |
6b61353c | 5367 | message_with_string ((INTEGERP (append) |
0c328a0e RS |
5368 | ? "Updated %s" |
5369 | : ! NILP (append) | |
5370 | ? "Added to %s" | |
5371 | : "Wrote %s"), | |
5372 | visit_file, 1); | |
570d7624 JB |
5373 | |
5374 | return Qnil; | |
5375 | } | |
ec7adf26 | 5376 | \f |
d6a3cc15 RS |
5377 | Lisp_Object merge (); |
5378 | ||
5379 | DEFUN ("car-less-than-car", Fcar_less_than_car, Scar_less_than_car, 2, 2, 0, | |
8c1a1077 PJ |
5380 | doc: /* Return t if (car A) is numerically less than (car B). */) |
5381 | (a, b) | |
d6a3cc15 RS |
5382 | Lisp_Object a, b; |
5383 | { | |
5384 | return Flss (Fcar (a), Fcar (b)); | |
5385 | } | |
5386 | ||
5387 | /* Build the complete list of annotations appropriate for writing out | |
5388 | the text between START and END, by calling all the functions in | |
6fc6f94b RS |
5389 | write-region-annotate-functions and merging the lists they return. |
5390 | If one of these functions switches to a different buffer, we assume | |
5391 | that buffer contains altered text. Therefore, the caller must | |
5392 | make sure to restore the current buffer in all cases, | |
5393 | as save-excursion would do. */ | |
d6a3cc15 RS |
5394 | |
5395 | static Lisp_Object | |
236a12f2 SM |
5396 | build_annotations (start, end) |
5397 | Lisp_Object start, end; | |
d6a3cc15 RS |
5398 | { |
5399 | Lisp_Object annotations; | |
5400 | Lisp_Object p, res; | |
5401 | struct gcpro gcpro1, gcpro2; | |
0a20b684 | 5402 | Lisp_Object original_buffer; |
bd235610 | 5403 | int i, used_global = 0; |
0a20b684 RS |
5404 | |
5405 | XSETBUFFER (original_buffer, current_buffer); | |
d6a3cc15 RS |
5406 | |
5407 | annotations = Qnil; | |
5408 | p = Vwrite_region_annotate_functions; | |
5409 | GCPRO2 (annotations, p); | |
28c3eb5a | 5410 | while (CONSP (p)) |
d6a3cc15 | 5411 | { |
6fc6f94b | 5412 | struct buffer *given_buffer = current_buffer; |
bd235610 SM |
5413 | if (EQ (Qt, XCAR (p)) && !used_global) |
5414 | { /* Use the global value of the hook. */ | |
5415 | Lisp_Object arg[2]; | |
5416 | used_global = 1; | |
5417 | arg[0] = Fdefault_value (Qwrite_region_annotate_functions); | |
5418 | arg[1] = XCDR (p); | |
5419 | p = Fappend (2, arg); | |
5420 | continue; | |
5421 | } | |
6fc6f94b | 5422 | Vwrite_region_annotations_so_far = annotations; |
28c3eb5a | 5423 | res = call2 (XCAR (p), start, end); |
6fc6f94b RS |
5424 | /* If the function makes a different buffer current, |
5425 | assume that means this buffer contains altered text to be output. | |
5426 | Reset START and END from the buffer bounds | |
5427 | and discard all previous annotations because they should have | |
5428 | been dealt with by this function. */ | |
5429 | if (current_buffer != given_buffer) | |
5430 | { | |
3cf29f61 RS |
5431 | XSETFASTINT (start, BEGV); |
5432 | XSETFASTINT (end, ZV); | |
6fc6f94b RS |
5433 | annotations = Qnil; |
5434 | } | |
d6a3cc15 RS |
5435 | Flength (res); /* Check basic validity of return value */ |
5436 | annotations = merge (annotations, res, Qcar_less_than_car); | |
28c3eb5a | 5437 | p = XCDR (p); |
d6a3cc15 | 5438 | } |
0d420e88 BG |
5439 | |
5440 | /* Now do the same for annotation functions implied by the file-format */ | |
f844ba4e LT |
5441 | if (auto_saving && (!EQ (current_buffer->auto_save_file_format, Qt))) |
5442 | p = current_buffer->auto_save_file_format; | |
0d420e88 BG |
5443 | else |
5444 | p = current_buffer->file_format; | |
28c3eb5a | 5445 | for (i = 0; CONSP (p); p = XCDR (p), ++i) |
0d420e88 BG |
5446 | { |
5447 | struct buffer *given_buffer = current_buffer; | |
efdc16c9 | 5448 | |
0d420e88 | 5449 | Vwrite_region_annotations_so_far = annotations; |
532ed661 GM |
5450 | |
5451 | /* Value is either a list of annotations or nil if the function | |
5452 | has written annotations to a temporary buffer, which is now | |
5453 | current. */ | |
28c3eb5a | 5454 | res = call5 (Qformat_annotate_function, XCAR (p), start, end, |
532ed661 | 5455 | original_buffer, make_number (i)); |
0d420e88 BG |
5456 | if (current_buffer != given_buffer) |
5457 | { | |
3cf29f61 RS |
5458 | XSETFASTINT (start, BEGV); |
5459 | XSETFASTINT (end, ZV); | |
0d420e88 BG |
5460 | annotations = Qnil; |
5461 | } | |
efdc16c9 | 5462 | |
532ed661 GM |
5463 | if (CONSP (res)) |
5464 | annotations = merge (annotations, res, Qcar_less_than_car); | |
0d420e88 | 5465 | } |
6fdaa9a0 | 5466 | |
236a12f2 SM |
5467 | UNGCPRO; |
5468 | return annotations; | |
5469 | } | |
5470 | ||
ec7adf26 | 5471 | \f |
ce51c54c KH |
5472 | /* Write to descriptor DESC the NCHARS chars starting at POS of STRING. |
5473 | If STRING is nil, POS is the character position in the current buffer. | |
d6a3cc15 | 5474 | Intersperse with them the annotations from *ANNOT |
ce51c54c | 5475 | which fall within the range of POS to POS + NCHARS, |
d6a3cc15 RS |
5476 | each at its appropriate position. |
5477 | ||
ec7adf26 RS |
5478 | We modify *ANNOT by discarding elements as we use them up. |
5479 | ||
d6a3cc15 RS |
5480 | The return value is negative in case of system call failure. */ |
5481 | ||
ec7adf26 | 5482 | static int |
ce51c54c | 5483 | a_write (desc, string, pos, nchars, annot, coding) |
d6a3cc15 | 5484 | int desc; |
ce51c54c KH |
5485 | Lisp_Object string; |
5486 | register int nchars; | |
5487 | int pos; | |
d6a3cc15 | 5488 | Lisp_Object *annot; |
6fdaa9a0 | 5489 | struct coding_system *coding; |
d6a3cc15 RS |
5490 | { |
5491 | Lisp_Object tem; | |
5492 | int nextpos; | |
ce51c54c | 5493 | int lastpos = pos + nchars; |
d6a3cc15 | 5494 | |
eb15aa18 | 5495 | while (NILP (*annot) || CONSP (*annot)) |
d6a3cc15 RS |
5496 | { |
5497 | tem = Fcar_safe (Fcar (*annot)); | |
ce51c54c | 5498 | nextpos = pos - 1; |
ec7adf26 | 5499 | if (INTEGERP (tem)) |
ce51c54c | 5500 | nextpos = XFASTINT (tem); |
ec7adf26 RS |
5501 | |
5502 | /* If there are no more annotations in this range, | |
5503 | output the rest of the range all at once. */ | |
ce51c54c KH |
5504 | if (! (nextpos >= pos && nextpos <= lastpos)) |
5505 | return e_write (desc, string, pos, lastpos, coding); | |
ec7adf26 RS |
5506 | |
5507 | /* Output buffer text up to the next annotation's position. */ | |
ce51c54c | 5508 | if (nextpos > pos) |
d6a3cc15 | 5509 | { |
055a28c9 | 5510 | if (0 > e_write (desc, string, pos, nextpos, coding)) |
d6a3cc15 | 5511 | return -1; |
ce51c54c | 5512 | pos = nextpos; |
d6a3cc15 | 5513 | } |
ec7adf26 | 5514 | /* Output the annotation. */ |
d6a3cc15 RS |
5515 | tem = Fcdr (Fcar (*annot)); |
5516 | if (STRINGP (tem)) | |
5517 | { | |
d5db4077 | 5518 | if (0 > e_write (desc, tem, 0, SCHARS (tem), coding)) |
d6a3cc15 RS |
5519 | return -1; |
5520 | } | |
5521 | *annot = Fcdr (*annot); | |
5522 | } | |
dfcf069d | 5523 | return 0; |
d6a3cc15 RS |
5524 | } |
5525 | ||
6fdaa9a0 | 5526 | |
ce51c54c KH |
5527 | /* Write text in the range START and END into descriptor DESC, |
5528 | encoding them with coding system CODING. If STRING is nil, START | |
5529 | and END are character positions of the current buffer, else they | |
5530 | are indexes to the string STRING. */ | |
ec7adf26 RS |
5531 | |
5532 | static int | |
ce51c54c | 5533 | e_write (desc, string, start, end, coding) |
570d7624 | 5534 | int desc; |
ce51c54c KH |
5535 | Lisp_Object string; |
5536 | int start, end; | |
6fdaa9a0 | 5537 | struct coding_system *coding; |
570d7624 | 5538 | { |
ce51c54c KH |
5539 | if (STRINGP (string)) |
5540 | { | |
db327c7e | 5541 | start = 0; |
8f924df7 | 5542 | end = SCHARS (string); |
ce51c54c | 5543 | } |
570d7624 | 5544 | |
6fdaa9a0 KH |
5545 | /* We used to have a code for handling selective display here. But, |
5546 | now it is handled within encode_coding. */ | |
01ca97a2 KH |
5547 | |
5548 | while (start < end) | |
570d7624 | 5549 | { |
01ca97a2 | 5550 | if (STRINGP (string)) |
6ad568dd | 5551 | { |
01ca97a2 KH |
5552 | coding->src_multibyte = SCHARS (string) < SBYTES (string); |
5553 | if (CODING_REQUIRE_ENCODING (coding)) | |
5554 | { | |
5555 | encode_coding_object (coding, string, | |
5556 | start, string_char_to_byte (string, start), | |
5557 | end, string_char_to_byte (string, end), Qt); | |
5558 | } | |
5559 | else | |
5560 | { | |
5561 | coding->dst_object = string; | |
5562 | coding->consumed_char = SCHARS (string); | |
5563 | coding->produced = SBYTES (string); | |
5564 | } | |
6ad568dd | 5565 | } |
db327c7e | 5566 | else |
6ad568dd | 5567 | { |
01ca97a2 KH |
5568 | int start_byte = CHAR_TO_BYTE (start); |
5569 | int end_byte = CHAR_TO_BYTE (end); | |
b4132433 | 5570 | |
01ca97a2 KH |
5571 | coding->src_multibyte = (end - start) < (end_byte - start_byte); |
5572 | if (CODING_REQUIRE_ENCODING (coding)) | |
5573 | { | |
5574 | encode_coding_object (coding, Fcurrent_buffer (), | |
5575 | start, start_byte, end, end_byte, Qt); | |
5576 | } | |
5577 | else | |
5578 | { | |
5579 | coding->dst_object = Qnil; | |
5580 | coding->dst_pos_byte = start_byte; | |
5581 | if (start >= GPT || end <= GPT) | |
5582 | { | |
5583 | coding->consumed_char = end - start; | |
5584 | coding->produced = end_byte - start_byte; | |
5585 | } | |
5586 | else | |
5587 | { | |
5588 | coding->consumed_char = GPT - start; | |
5589 | coding->produced = GPT_BYTE - start_byte; | |
5590 | } | |
5591 | } | |
c185d744 | 5592 | } |
01ca97a2 KH |
5593 | |
5594 | if (coding->produced > 0) | |
c185d744 | 5595 | { |
01ca97a2 KH |
5596 | coding->produced -= |
5597 | emacs_write (desc, | |
5598 | STRINGP (coding->dst_object) | |
5599 | ? SDATA (coding->dst_object) | |
5600 | : BYTE_POS_ADDR (coding->dst_pos_byte), | |
5601 | coding->produced); | |
5602 | ||
5603 | if (coding->produced) | |
5604 | return -1; | |
570d7624 | 5605 | } |
01ca97a2 | 5606 | start += coding->consumed_char; |
c185d744 KH |
5607 | } |
5608 | ||
5609 | return 0; | |
570d7624 | 5610 | } |
ec7adf26 | 5611 | \f |
570d7624 | 5612 | DEFUN ("verify-visited-file-modtime", Fverify_visited_file_modtime, |
8c1a1077 PJ |
5613 | Sverify_visited_file_modtime, 1, 1, 0, |
5614 | doc: /* Return t if last mod time of BUF's visited file matches what BUF records. | |
6b61353c KH |
5615 | This means that the file has not been changed since it was visited or saved. |
5616 | See Info node `(elisp)Modification Time' for more details. */) | |
8c1a1077 | 5617 | (buf) |
570d7624 JB |
5618 | Lisp_Object buf; |
5619 | { | |
5620 | struct buffer *b; | |
5621 | struct stat st; | |
32f4334d | 5622 | Lisp_Object handler; |
b1d1b865 | 5623 | Lisp_Object filename; |
570d7624 | 5624 | |
b7826503 | 5625 | CHECK_BUFFER (buf); |
570d7624 JB |
5626 | b = XBUFFER (buf); |
5627 | ||
93c30b5f | 5628 | if (!STRINGP (b->filename)) return Qt; |
570d7624 JB |
5629 | if (b->modtime == 0) return Qt; |
5630 | ||
32f4334d RS |
5631 | /* If the file name has special constructs in it, |
5632 | call the corresponding file handler. */ | |
49307295 KH |
5633 | handler = Ffind_file_name_handler (b->filename, |
5634 | Qverify_visited_file_modtime); | |
32f4334d | 5635 | if (!NILP (handler)) |
09121adc | 5636 | return call2 (handler, Qverify_visited_file_modtime, buf); |
32f4334d | 5637 | |
b1d1b865 RS |
5638 | filename = ENCODE_FILE (b->filename); |
5639 | ||
d5db4077 | 5640 | if (stat (SDATA (filename), &st) < 0) |
570d7624 JB |
5641 | { |
5642 | /* If the file doesn't exist now and didn't exist before, | |
5643 | we say that it isn't modified, provided the error is a tame one. */ | |
5644 | if (errno == ENOENT || errno == EACCES || errno == ENOTDIR) | |
5645 | st.st_mtime = -1; | |
5646 | else | |
5647 | st.st_mtime = 0; | |
5648 | } | |
5649 | if (st.st_mtime == b->modtime | |
5650 | /* If both are positive, accept them if they are off by one second. */ | |
5651 | || (st.st_mtime > 0 && b->modtime > 0 | |
5652 | && (st.st_mtime == b->modtime + 1 | |
5653 | || st.st_mtime == b->modtime - 1))) | |
5654 | return Qt; | |
5655 | return Qnil; | |
5656 | } | |
5657 | ||
5658 | DEFUN ("clear-visited-file-modtime", Fclear_visited_file_modtime, | |
8c1a1077 PJ |
5659 | Sclear_visited_file_modtime, 0, 0, 0, |
5660 | doc: /* Clear out records of last mod time of visited file. | |
5661 | Next attempt to save will certainly not complain of a discrepancy. */) | |
5662 | () | |
570d7624 JB |
5663 | { |
5664 | current_buffer->modtime = 0; | |
5665 | return Qnil; | |
5666 | } | |
5667 | ||
f5d5eccf | 5668 | DEFUN ("visited-file-modtime", Fvisited_file_modtime, |
8c1a1077 PJ |
5669 | Svisited_file_modtime, 0, 0, 0, |
5670 | doc: /* Return the current buffer's recorded visited file modification time. | |
e5fcddc8 | 5671 | The value is a list of the form (HIGH LOW), like the time values |
6b61353c KH |
5672 | that `file-attributes' returns. If the current buffer has no recorded |
5673 | file modification time, this function returns 0. | |
5674 | See Info node `(elisp)Modification Time' for more details. */) | |
8c1a1077 | 5675 | () |
f5d5eccf | 5676 | { |
73ff9d42 RS |
5677 | if (! current_buffer->modtime) |
5678 | return make_number (0); | |
5679 | return make_time ((time_t) current_buffer->modtime); | |
f5d5eccf RS |
5680 | } |
5681 | ||
570d7624 | 5682 | DEFUN ("set-visited-file-modtime", Fset_visited_file_modtime, |
8c1a1077 PJ |
5683 | Sset_visited_file_modtime, 0, 1, 0, |
5684 | doc: /* Update buffer's recorded modification time from the visited file's time. | |
5685 | Useful if the buffer was not read from the file normally | |
5686 | or if the file itself has been changed for some known benign reason. | |
5687 | An argument specifies the modification time value to use | |
5688 | \(instead of that of the visited file), in the form of a list | |
5689 | \(HIGH . LOW) or (HIGH LOW). */) | |
5690 | (time_list) | |
f5d5eccf | 5691 | Lisp_Object time_list; |
570d7624 | 5692 | { |
f5d5eccf RS |
5693 | if (!NILP (time_list)) |
5694 | current_buffer->modtime = cons_to_long (time_list); | |
5695 | else | |
5696 | { | |
5697 | register Lisp_Object filename; | |
5698 | struct stat st; | |
5699 | Lisp_Object handler; | |
570d7624 | 5700 | |
f5d5eccf | 5701 | filename = Fexpand_file_name (current_buffer->filename, Qnil); |
32f4334d | 5702 | |
f5d5eccf RS |
5703 | /* If the file name has special constructs in it, |
5704 | call the corresponding file handler. */ | |
49307295 | 5705 | handler = Ffind_file_name_handler (filename, Qset_visited_file_modtime); |
f5d5eccf | 5706 | if (!NILP (handler)) |
caf3c431 | 5707 | /* The handler can find the file name the same way we did. */ |
76c881b0 | 5708 | return call2 (handler, Qset_visited_file_modtime, Qnil); |
b1d1b865 RS |
5709 | |
5710 | filename = ENCODE_FILE (filename); | |
5711 | ||
d5db4077 | 5712 | if (stat (SDATA (filename), &st) >= 0) |
f5d5eccf RS |
5713 | current_buffer->modtime = st.st_mtime; |
5714 | } | |
570d7624 JB |
5715 | |
5716 | return Qnil; | |
5717 | } | |
5718 | \f | |
5719 | Lisp_Object | |
d7f31e22 GM |
5720 | auto_save_error (error) |
5721 | Lisp_Object error; | |
570d7624 | 5722 | { |
d7f31e22 GM |
5723 | Lisp_Object args[3], msg; |
5724 | int i, nbytes; | |
5725 | struct gcpro gcpro1; | |
dfc22242 KS |
5726 | char *msgbuf; |
5727 | USE_SAFE_ALLOCA; | |
efdc16c9 | 5728 | |
385ed61f | 5729 | ring_bell (XFRAME (selected_frame)); |
efdc16c9 | 5730 | |
d7f31e22 GM |
5731 | args[0] = build_string ("Auto-saving %s: %s"); |
5732 | args[1] = current_buffer->name; | |
5733 | args[2] = Ferror_message_string (error); | |
5734 | msg = Fformat (3, args); | |
5735 | GCPRO1 (msg); | |
d5db4077 | 5736 | nbytes = SBYTES (msg); |
dfc22242 KS |
5737 | SAFE_ALLOCA (msgbuf, char *, nbytes); |
5738 | bcopy (SDATA (msg), msgbuf, nbytes); | |
d7f31e22 GM |
5739 | |
5740 | for (i = 0; i < 3; ++i) | |
5741 | { | |
5742 | if (i == 0) | |
dfc22242 | 5743 | message2 (msgbuf, nbytes, STRING_MULTIBYTE (msg)); |
d7f31e22 | 5744 | else |
dfc22242 | 5745 | message2_nolog (msgbuf, nbytes, STRING_MULTIBYTE (msg)); |
d7f31e22 GM |
5746 | Fsleep_for (make_number (1), Qnil); |
5747 | } | |
5748 | ||
e01f7773 | 5749 | SAFE_FREE (); |
d7f31e22 | 5750 | UNGCPRO; |
570d7624 JB |
5751 | return Qnil; |
5752 | } | |
5753 | ||
5754 | Lisp_Object | |
5755 | auto_save_1 () | |
5756 | { | |
570d7624 | 5757 | struct stat st; |
d4a42098 KS |
5758 | Lisp_Object modes; |
5759 | ||
5760 | auto_save_mode_bits = 0666; | |
570d7624 JB |
5761 | |
5762 | /* Get visited file's mode to become the auto save file's mode. */ | |
d4a42098 KS |
5763 | if (! NILP (current_buffer->filename)) |
5764 | { | |
5765 | if (stat (SDATA (current_buffer->filename), &st) >= 0) | |
5766 | /* But make sure we can overwrite it later! */ | |
5767 | auto_save_mode_bits = st.st_mode | 0600; | |
5768 | else if ((modes = Ffile_modes (current_buffer->filename), | |
5769 | INTEGERP (modes))) | |
5770 | /* Remote files don't cooperate with stat. */ | |
5771 | auto_save_mode_bits = XINT (modes) | 0600; | |
5772 | } | |
570d7624 JB |
5773 | |
5774 | return | |
5775 | Fwrite_region (Qnil, Qnil, | |
5776 | current_buffer->auto_save_file_name, | |
de1d0127 | 5777 | Qnil, Qlambda, Qnil, Qnil); |
570d7624 JB |
5778 | } |
5779 | ||
e54d3b5d | 5780 | static Lisp_Object |
fff7e982 KS |
5781 | do_auto_save_unwind (arg) /* used as unwind-protect function */ |
5782 | Lisp_Object arg; | |
e54d3b5d | 5783 | { |
fff7e982 | 5784 | FILE *stream = (FILE *) XSAVE_VALUE (arg)->pointer; |
3be3c08e | 5785 | auto_saving = 0; |
fff7e982 | 5786 | if (stream != NULL) |
aab12958 YM |
5787 | { |
5788 | BLOCK_INPUT; | |
5789 | fclose (stream); | |
5790 | UNBLOCK_INPUT; | |
5791 | } | |
e54d3b5d RS |
5792 | return Qnil; |
5793 | } | |
5794 | ||
a8c828be RS |
5795 | static Lisp_Object |
5796 | do_auto_save_unwind_1 (value) /* used as unwind-protect function */ | |
5797 | Lisp_Object value; | |
5798 | { | |
5799 | minibuffer_auto_raise = XINT (value); | |
5800 | return Qnil; | |
5801 | } | |
5802 | ||
5794dd61 RS |
5803 | static Lisp_Object |
5804 | do_auto_save_make_dir (dir) | |
5805 | Lisp_Object dir; | |
5806 | { | |
26816cbf SG |
5807 | Lisp_Object mode; |
5808 | ||
5809 | call2 (Qmake_directory, dir, Qt); | |
5810 | XSETFASTINT (mode, 0700); | |
5811 | return Fset_file_modes (dir, mode); | |
5794dd61 RS |
5812 | } |
5813 | ||
5814 | static Lisp_Object | |
5815 | do_auto_save_eh (ignore) | |
5816 | Lisp_Object ignore; | |
5817 | { | |
5818 | return Qnil; | |
5819 | } | |
5820 | ||
570d7624 | 5821 | DEFUN ("do-auto-save", Fdo_auto_save, Sdo_auto_save, 0, 2, "", |
8c1a1077 PJ |
5822 | doc: /* Auto-save all buffers that need it. |
5823 | This is all buffers that have auto-saving enabled | |
5824 | and are changed since last auto-saved. | |
5825 | Auto-saving writes the buffer into a file | |
5826 | so that your editing is not lost if the system crashes. | |
5827 | This file is not the file you visited; that changes only when you save. | |
5828 | Normally we run the normal hook `auto-save-hook' before saving. | |
5829 | ||
5830 | A non-nil NO-MESSAGE argument means do not print any message if successful. | |
5831 | A non-nil CURRENT-ONLY argument means save only current buffer. */) | |
5832 | (no_message, current_only) | |
17857782 | 5833 | Lisp_Object no_message, current_only; |
570d7624 JB |
5834 | { |
5835 | struct buffer *old = current_buffer, *b; | |
5836 | Lisp_Object tail, buf; | |
5837 | int auto_saved = 0; | |
f14b1c68 | 5838 | int do_handled_files; |
ff4c9993 | 5839 | Lisp_Object oquit; |
fff7e982 | 5840 | FILE *stream = NULL; |
aed13378 | 5841 | int count = SPECPDL_INDEX (); |
a8c828be | 5842 | int orig_minibuffer_auto_raise = minibuffer_auto_raise; |
5794dd61 | 5843 | int old_message_p = 0; |
d57563b6 | 5844 | struct gcpro gcpro1, gcpro2; |
38da540d RS |
5845 | |
5846 | if (max_specpdl_size < specpdl_size + 40) | |
5847 | max_specpdl_size = specpdl_size + 40; | |
5848 | ||
5849 | if (minibuf_level) | |
5850 | no_message = Qt; | |
5851 | ||
5794dd61 RS |
5852 | if (NILP (no_message)) |
5853 | { | |
5854 | old_message_p = push_message (); | |
5855 | record_unwind_protect (pop_message_unwind, Qnil); | |
5856 | } | |
efdc16c9 | 5857 | |
ff4c9993 RS |
5858 | /* Ordinarily don't quit within this function, |
5859 | but don't make it impossible to quit (in case we get hung in I/O). */ | |
5860 | oquit = Vquit_flag; | |
5861 | Vquit_flag = Qnil; | |
570d7624 JB |
5862 | |
5863 | /* No GCPRO needed, because (when it matters) all Lisp_Object variables | |
5864 | point to non-strings reached from Vbuffer_alist. */ | |
5865 | ||
265a9e55 | 5866 | if (!NILP (Vrun_hooks)) |
570d7624 JB |
5867 | call1 (Vrun_hooks, intern ("auto-save-hook")); |
5868 | ||
e54d3b5d RS |
5869 | if (STRINGP (Vauto_save_list_file_name)) |
5870 | { | |
0894672f | 5871 | Lisp_Object listfile; |
efdc16c9 | 5872 | |
258fd2cb | 5873 | listfile = Fexpand_file_name (Vauto_save_list_file_name, Qnil); |
0894672f GM |
5874 | |
5875 | /* Don't try to create the directory when shutting down Emacs, | |
5876 | because creating the directory might signal an error, and | |
5877 | that would leave Emacs in a strange state. */ | |
5878 | if (!NILP (Vrun_hooks)) | |
5879 | { | |
5880 | Lisp_Object dir; | |
d57563b6 RS |
5881 | dir = Qnil; |
5882 | GCPRO2 (dir, listfile); | |
0894672f GM |
5883 | dir = Ffile_name_directory (listfile); |
5884 | if (NILP (Ffile_directory_p (dir))) | |
5794dd61 RS |
5885 | internal_condition_case_1 (do_auto_save_make_dir, |
5886 | dir, Fcons (Fcons (Qfile_error, Qnil), Qnil), | |
5887 | do_auto_save_eh); | |
d57563b6 | 5888 | UNGCPRO; |
0894672f | 5889 | } |
efdc16c9 | 5890 | |
d5db4077 | 5891 | stream = fopen (SDATA (listfile), "w"); |
1b335d29 | 5892 | } |
199607e4 | 5893 | |
fff7e982 KS |
5894 | record_unwind_protect (do_auto_save_unwind, |
5895 | make_save_value (stream, 0)); | |
a8c828be RS |
5896 | record_unwind_protect (do_auto_save_unwind_1, |
5897 | make_number (minibuffer_auto_raise)); | |
5898 | minibuffer_auto_raise = 0; | |
3be3c08e RS |
5899 | auto_saving = 1; |
5900 | ||
6b61353c KH |
5901 | /* On first pass, save all files that don't have handlers. |
5902 | On second pass, save all files that do have handlers. | |
5903 | ||
5904 | If Emacs is crashing, the handlers may tweak what is causing | |
5905 | Emacs to crash in the first place, and it would be a shame if | |
5906 | Emacs failed to autosave perfectly ordinary files because it | |
5907 | couldn't handle some ange-ftp'd file. */ | |
5908 | ||
f14b1c68 | 5909 | for (do_handled_files = 0; do_handled_files < 2; do_handled_files++) |
8e50cc2d | 5910 | for (tail = Vbuffer_alist; CONSP (tail); tail = XCDR (tail)) |
f14b1c68 | 5911 | { |
03699b14 | 5912 | buf = XCDR (XCAR (tail)); |
f14b1c68 | 5913 | b = XBUFFER (buf); |
199607e4 | 5914 | |
e54d3b5d | 5915 | /* Record all the buffers that have auto save mode |
258fd2cb RS |
5916 | in the special file that lists them. For each of these buffers, |
5917 | Record visited name (if any) and auto save name. */ | |
93c30b5f | 5918 | if (STRINGP (b->auto_save_file_name) |
1b335d29 | 5919 | && stream != NULL && do_handled_files == 0) |
e54d3b5d | 5920 | { |
aab12958 | 5921 | BLOCK_INPUT; |
258fd2cb RS |
5922 | if (!NILP (b->filename)) |
5923 | { | |
d5db4077 KR |
5924 | fwrite (SDATA (b->filename), 1, |
5925 | SBYTES (b->filename), stream); | |
258fd2cb | 5926 | } |
1b335d29 | 5927 | putc ('\n', stream); |
d5db4077 KR |
5928 | fwrite (SDATA (b->auto_save_file_name), 1, |
5929 | SBYTES (b->auto_save_file_name), stream); | |
1b335d29 | 5930 | putc ('\n', stream); |
aab12958 | 5931 | UNBLOCK_INPUT; |
e54d3b5d | 5932 | } |
17857782 | 5933 | |
f14b1c68 JB |
5934 | if (!NILP (current_only) |
5935 | && b != current_buffer) | |
5936 | continue; | |
e54d3b5d | 5937 | |
95385625 RS |
5938 | /* Don't auto-save indirect buffers. |
5939 | The base buffer takes care of it. */ | |
5940 | if (b->base_buffer) | |
5941 | continue; | |
5942 | ||
f14b1c68 JB |
5943 | /* Check for auto save enabled |
5944 | and file changed since last auto save | |
5945 | and file changed since last real save. */ | |
93c30b5f | 5946 | if (STRINGP (b->auto_save_file_name) |
95385625 | 5947 | && BUF_SAVE_MODIFF (b) < BUF_MODIFF (b) |
f14b1c68 | 5948 | && b->auto_save_modified < BUF_MODIFF (b) |
82c2d839 RS |
5949 | /* -1 means we've turned off autosaving for a while--see below. */ |
5950 | && XINT (b->save_length) >= 0 | |
f14b1c68 | 5951 | && (do_handled_files |
49307295 KH |
5952 | || NILP (Ffind_file_name_handler (b->auto_save_file_name, |
5953 | Qwrite_region)))) | |
f14b1c68 | 5954 | { |
b60247d9 RS |
5955 | EMACS_TIME before_time, after_time; |
5956 | ||
5957 | EMACS_GET_TIME (before_time); | |
5958 | ||
5959 | /* If we had a failure, don't try again for 20 minutes. */ | |
5960 | if (b->auto_save_failure_time >= 0 | |
5961 | && EMACS_SECS (before_time) - b->auto_save_failure_time < 1200) | |
5962 | continue; | |
5963 | ||
f14b1c68 JB |
5964 | if ((XFASTINT (b->save_length) * 10 |
5965 | > (BUF_Z (b) - BUF_BEG (b)) * 13) | |
5966 | /* A short file is likely to change a large fraction; | |
5967 | spare the user annoying messages. */ | |
5968 | && XFASTINT (b->save_length) > 5000 | |
5969 | /* These messages are frequent and annoying for `*mail*'. */ | |
5970 | && !EQ (b->filename, Qnil) | |
5971 | && NILP (no_message)) | |
5972 | { | |
5973 | /* It has shrunk too much; turn off auto-saving here. */ | |
a8c828be | 5974 | minibuffer_auto_raise = orig_minibuffer_auto_raise; |
fd91d0d4 | 5975 | message_with_string ("Buffer %s has shrunk a lot; auto save disabled in that buffer until next real save", |
60d67b83 | 5976 | b->name, 1); |
a8c828be | 5977 | minibuffer_auto_raise = 0; |
82c2d839 RS |
5978 | /* Turn off auto-saving until there's a real save, |
5979 | and prevent any more warnings. */ | |
46283abe | 5980 | XSETINT (b->save_length, -1); |
f14b1c68 JB |
5981 | Fsleep_for (make_number (1), Qnil); |
5982 | continue; | |
5983 | } | |
5984 | set_buffer_internal (b); | |
5985 | if (!auto_saved && NILP (no_message)) | |
5986 | message1 ("Auto-saving..."); | |
5987 | internal_condition_case (auto_save_1, Qt, auto_save_error); | |
5988 | auto_saved++; | |
5989 | b->auto_save_modified = BUF_MODIFF (b); | |
2acfd7ae | 5990 | XSETFASTINT (current_buffer->save_length, Z - BEG); |
f14b1c68 | 5991 | set_buffer_internal (old); |
b60247d9 RS |
5992 | |
5993 | EMACS_GET_TIME (after_time); | |
5994 | ||
5995 | /* If auto-save took more than 60 seconds, | |
5996 | assume it was an NFS failure that got a timeout. */ | |
5997 | if (EMACS_SECS (after_time) - EMACS_SECS (before_time) > 60) | |
5998 | b->auto_save_failure_time = EMACS_SECS (after_time); | |
f14b1c68 JB |
5999 | } |
6000 | } | |
570d7624 | 6001 | |
b67f2ca5 RS |
6002 | /* Prevent another auto save till enough input events come in. */ |
6003 | record_auto_save (); | |
570d7624 | 6004 | |
17857782 | 6005 | if (auto_saved && NILP (no_message)) |
f05b275b | 6006 | { |
5794dd61 | 6007 | if (old_message_p) |
31f3d831 | 6008 | { |
5794dd61 RS |
6009 | /* If we are going to restore an old message, |
6010 | give time to read ours. */ | |
83f8d903 | 6011 | sit_for (make_number (1), 0, 0); |
c71106e5 | 6012 | restore_message (); |
31f3d831 | 6013 | } |
f05b275b | 6014 | else |
5794dd61 RS |
6015 | /* If we displayed a message and then restored a state |
6016 | with no message, leave a "done" message on the screen. */ | |
f05b275b KH |
6017 | message1 ("Auto-saving...done"); |
6018 | } | |
570d7624 | 6019 | |
ff4c9993 RS |
6020 | Vquit_flag = oquit; |
6021 | ||
5794dd61 | 6022 | /* This restores the message-stack status. */ |
e54d3b5d | 6023 | unbind_to (count, Qnil); |
570d7624 JB |
6024 | return Qnil; |
6025 | } | |
6026 | ||
6027 | DEFUN ("set-buffer-auto-saved", Fset_buffer_auto_saved, | |
8c1a1077 PJ |
6028 | Sset_buffer_auto_saved, 0, 0, 0, |
6029 | doc: /* Mark current buffer as auto-saved with its current text. | |
6030 | No auto-save file will be written until the buffer changes again. */) | |
6031 | () | |
570d7624 JB |
6032 | { |
6033 | current_buffer->auto_save_modified = MODIFF; | |
2acfd7ae | 6034 | XSETFASTINT (current_buffer->save_length, Z - BEG); |
b60247d9 RS |
6035 | current_buffer->auto_save_failure_time = -1; |
6036 | return Qnil; | |
6037 | } | |
6038 | ||
6039 | DEFUN ("clear-buffer-auto-save-failure", Fclear_buffer_auto_save_failure, | |
8c1a1077 PJ |
6040 | Sclear_buffer_auto_save_failure, 0, 0, 0, |
6041 | doc: /* Clear any record of a recent auto-save failure in the current buffer. */) | |
6042 | () | |
b60247d9 RS |
6043 | { |
6044 | current_buffer->auto_save_failure_time = -1; | |
570d7624 JB |
6045 | return Qnil; |
6046 | } | |
6047 | ||
6048 | DEFUN ("recent-auto-save-p", Frecent_auto_save_p, Srecent_auto_save_p, | |
8c1a1077 | 6049 | 0, 0, 0, |
68780e2a RS |
6050 | doc: /* Return t if current buffer has been auto-saved recently. |
6051 | More precisely, if it has been auto-saved since last read from or saved | |
6052 | in the visited file. If the buffer has no visited file, | |
6053 | then any auto-save counts as "recent". */) | |
8c1a1077 | 6054 | () |
570d7624 | 6055 | { |
95385625 | 6056 | return (SAVE_MODIFF < current_buffer->auto_save_modified) ? Qt : Qnil; |
570d7624 JB |
6057 | } |
6058 | \f | |
6059 | /* Reading and completing file names */ | |
6060 | extern Lisp_Object Ffile_name_completion (), Ffile_name_all_completions (); | |
94b9aaa2 | 6061 | extern Lisp_Object Qcompletion_ignore_case; |
570d7624 | 6062 | |
6e710ae5 RS |
6063 | /* In the string VAL, change each $ to $$ and return the result. */ |
6064 | ||
6065 | static Lisp_Object | |
6066 | double_dollars (val) | |
6067 | Lisp_Object val; | |
6068 | { | |
19290c65 KR |
6069 | register const unsigned char *old; |
6070 | register unsigned char *new; | |
6e710ae5 RS |
6071 | register int n; |
6072 | int osize, count; | |
6073 | ||
d5db4077 | 6074 | osize = SBYTES (val); |
60d67b83 RS |
6075 | |
6076 | /* Count the number of $ characters. */ | |
d5db4077 | 6077 | for (n = osize, count = 0, old = SDATA (val); n > 0; n--) |
6e710ae5 RS |
6078 | if (*old++ == '$') count++; |
6079 | if (count > 0) | |
6080 | { | |
d5db4077 KR |
6081 | old = SDATA (val); |
6082 | val = make_uninit_multibyte_string (SCHARS (val) + count, | |
60d67b83 | 6083 | osize + count); |
d5db4077 | 6084 | new = SDATA (val); |
6e710ae5 RS |
6085 | for (n = osize; n > 0; n--) |
6086 | if (*old != '$') | |
6087 | *new++ = *old++; | |
6088 | else | |
6089 | { | |
6090 | *new++ = '$'; | |
6091 | *new++ = '$'; | |
6092 | old++; | |
6093 | } | |
6094 | } | |
6095 | return val; | |
6096 | } | |
6097 | ||
59ffe07d KS |
6098 | static Lisp_Object |
6099 | read_file_name_cleanup (arg) | |
6100 | Lisp_Object arg; | |
6101 | { | |
c4174fbb | 6102 | return (current_buffer->directory = arg); |
59ffe07d KS |
6103 | } |
6104 | ||
570d7624 | 6105 | DEFUN ("read-file-name-internal", Fread_file_name_internal, Sread_file_name_internal, |
8c1a1077 PJ |
6106 | 3, 3, 0, |
6107 | doc: /* Internal subroutine for read-file-name. Do not call this. */) | |
6108 | (string, dir, action) | |
570d7624 JB |
6109 | Lisp_Object string, dir, action; |
6110 | /* action is nil for complete, t for return list of completions, | |
6111 | lambda for verify final value */ | |
6112 | { | |
6113 | Lisp_Object name, specdir, realdir, val, orig_string; | |
09121adc | 6114 | int changed; |
8ce069f5 | 6115 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5; |
09121adc | 6116 | |
b7826503 | 6117 | CHECK_STRING (string); |
58cc3710 | 6118 | |
09121adc RS |
6119 | realdir = dir; |
6120 | name = string; | |
6121 | orig_string = Qnil; | |
6122 | specdir = Qnil; | |
6123 | changed = 0; | |
6124 | /* No need to protect ACTION--we only compare it with t and nil. */ | |
8ce069f5 | 6125 | GCPRO5 (string, realdir, name, specdir, orig_string); |
570d7624 | 6126 | |
d5db4077 | 6127 | if (SCHARS (string) == 0) |
570d7624 | 6128 | { |
570d7624 | 6129 | if (EQ (action, Qlambda)) |
09121adc RS |
6130 | { |
6131 | UNGCPRO; | |
6132 | return Qnil; | |
6133 | } | |
570d7624 JB |
6134 | } |
6135 | else | |
6136 | { | |
6137 | orig_string = string; | |
6138 | string = Fsubstitute_in_file_name (string); | |
09121adc | 6139 | changed = NILP (Fstring_equal (string, orig_string)); |
570d7624 | 6140 | name = Ffile_name_nondirectory (string); |
09121adc RS |
6141 | val = Ffile_name_directory (string); |
6142 | if (! NILP (val)) | |
6143 | realdir = Fexpand_file_name (val, realdir); | |
570d7624 JB |
6144 | } |
6145 | ||
265a9e55 | 6146 | if (NILP (action)) |
570d7624 JB |
6147 | { |
6148 | specdir = Ffile_name_directory (string); | |
aaf469fc | 6149 | val = Ffile_name_completion (name, realdir, Vread_file_name_predicate); |
09121adc | 6150 | UNGCPRO; |
93c30b5f | 6151 | if (!STRINGP (val)) |
570d7624 | 6152 | { |
09121adc | 6153 | if (changed) |
dbd04e01 | 6154 | return double_dollars (string); |
09121adc | 6155 | return val; |
570d7624 JB |
6156 | } |
6157 | ||
265a9e55 | 6158 | if (!NILP (specdir)) |
570d7624 JB |
6159 | val = concat2 (specdir, val); |
6160 | #ifndef VMS | |
6e710ae5 RS |
6161 | return double_dollars (val); |
6162 | #else /* not VMS */ | |
09121adc | 6163 | return val; |
6e710ae5 | 6164 | #endif /* not VMS */ |
570d7624 | 6165 | } |
09121adc | 6166 | UNGCPRO; |
570d7624 JB |
6167 | |
6168 | if (EQ (action, Qt)) | |
59ffe07d KS |
6169 | { |
6170 | Lisp_Object all = Ffile_name_all_completions (name, realdir); | |
6171 | Lisp_Object comp; | |
6172 | int count; | |
6173 | ||
6174 | if (NILP (Vread_file_name_predicate) | |
6175 | || EQ (Vread_file_name_predicate, Qfile_exists_p)) | |
6176 | return all; | |
da46f04f KS |
6177 | |
6178 | #ifndef VMS | |
6179 | if (EQ (Vread_file_name_predicate, Qfile_directory_p)) | |
6180 | { | |
efdc16c9 | 6181 | /* Brute-force speed up for directory checking: |
da46f04f KS |
6182 | Discard strings which don't end in a slash. */ |
6183 | for (comp = Qnil; CONSP (all); all = XCDR (all)) | |
6184 | { | |
6185 | Lisp_Object tem = XCAR (all); | |
6186 | int len; | |
6187 | if (STRINGP (tem) && | |
db8ab0f5 | 6188 | (len = SBYTES (tem), len > 0) && |
d5db4077 | 6189 | IS_DIRECTORY_SEP (SREF (tem, len-1))) |
da46f04f KS |
6190 | comp = Fcons (tem, comp); |
6191 | } | |
6192 | } | |
6193 | else | |
6194 | #endif | |
6195 | { | |
6196 | /* Must do it the hard (and slow) way. */ | |
a3911e8c | 6197 | Lisp_Object tem; |
da46f04f | 6198 | GCPRO3 (all, comp, specdir); |
aed13378 | 6199 | count = SPECPDL_INDEX (); |
da46f04f KS |
6200 | record_unwind_protect (read_file_name_cleanup, current_buffer->directory); |
6201 | current_buffer->directory = realdir; | |
6202 | for (comp = Qnil; CONSP (all); all = XCDR (all)) | |
a3911e8c KR |
6203 | { |
6204 | tem = call1 (Vread_file_name_predicate, XCAR (all)); | |
6205 | if (!NILP (tem)) | |
6206 | comp = Fcons (XCAR (all), comp); | |
6207 | } | |
da46f04f KS |
6208 | unbind_to (count, Qnil); |
6209 | UNGCPRO; | |
6210 | } | |
59ffe07d KS |
6211 | return Fnreverse (comp); |
6212 | } | |
6213 | ||
570d7624 JB |
6214 | /* Only other case actually used is ACTION = lambda */ |
6215 | #ifdef VMS | |
6216 | /* Supposedly this helps commands such as `cd' that read directory names, | |
6217 | but can someone explain how it helps them? -- RMS */ | |
d5db4077 | 6218 | if (SCHARS (name) == 0) |
570d7624 JB |
6219 | return Qt; |
6220 | #endif /* VMS */ | |
6b61353c | 6221 | string = Fexpand_file_name (string, dir); |
59ffe07d KS |
6222 | if (!NILP (Vread_file_name_predicate)) |
6223 | return call1 (Vread_file_name_predicate, string); | |
570d7624 JB |
6224 | return Ffile_exists_p (string); |
6225 | } | |
6226 | ||
88208bb8 JD |
6227 | DEFUN ("next-read-file-uses-dialog-p", Fnext_read_file_uses_dialog_p, |
6228 | Snext_read_file_uses_dialog_p, 0, 0, 0, | |
6229 | doc: /* Return t if a call to `read-file-name' will use a dialog. | |
6230 | The return value is only relevant for a call to `read-file-name' that happens | |
6231 | before any other event (mouse or keypress) is handeled. */) | |
6232 | () | |
6233 | { | |
b15325b2 | 6234 | #if defined (USE_MOTIF) || defined (HAVE_NTGUI) || defined (USE_GTK) || defined (HAVE_CARBON) |
88208bb8 JD |
6235 | if ((NILP (last_nonmenu_event) || CONSP (last_nonmenu_event)) |
6236 | && use_dialog_box | |
6237 | && use_file_dialog | |
6238 | && have_menus_p ()) | |
6239 | return Qt; | |
6240 | #endif | |
6241 | return Qnil; | |
6242 | } | |
d4a42098 | 6243 | |
59ffe07d | 6244 | DEFUN ("read-file-name", Fread_file_name, Sread_file_name, 1, 6, 0, |
8c1a1077 PJ |
6245 | doc: /* Read file name, prompting with PROMPT and completing in directory DIR. |
6246 | Value is not expanded---you must call `expand-file-name' yourself. | |
6b61353c KH |
6247 | Default name to DEFAULT-FILENAME if user exits the minibuffer with |
6248 | the same non-empty string that was inserted by this function. | |
8c1a1077 PJ |
6249 | (If DEFAULT-FILENAME is omitted, the visited file name is used, |
6250 | except that if INITIAL is specified, that combined with DIR is used.) | |
6b61353c KH |
6251 | If the user exits with an empty minibuffer, this function returns |
6252 | an empty string. (This can only happen if the user erased the | |
6253 | pre-inserted contents or if `insert-default-directory' is nil.) | |
8c1a1077 PJ |
6254 | Fourth arg MUSTMATCH non-nil means require existing file's name. |
6255 | Non-nil and non-t means also require confirmation after completion. | |
6256 | Fifth arg INITIAL specifies text to start with. | |
6b61353c KH |
6257 | If optional sixth arg PREDICATE is non-nil, possible completions and |
6258 | the resulting file name must satisfy (funcall PREDICATE NAME). | |
6259 | DIR should be an absolute directory name. It defaults to the value of | |
6260 | `default-directory'. | |
8c1a1077 PJ |
6261 | |
6262 | If this command was invoked with the mouse, use a file dialog box if | |
6263 | `use-dialog-box' is non-nil, and the window system or X toolkit in use | |
d35c2489 JPW |
6264 | provides a file dialog box. |
6265 | ||
6266 | See also `read-file-name-completion-ignore-case' | |
6267 | and `read-file-name-function'. */) | |
59ffe07d KS |
6268 | (prompt, dir, default_filename, mustmatch, initial, predicate) |
6269 | Lisp_Object prompt, dir, default_filename, mustmatch, initial, predicate; | |
570d7624 | 6270 | { |
8d6d9fef | 6271 | Lisp_Object val, insdef, tem; |
570d7624 JB |
6272 | struct gcpro gcpro1, gcpro2; |
6273 | register char *homedir; | |
d7231f93 | 6274 | Lisp_Object decoded_homedir; |
62f555a5 RS |
6275 | int replace_in_history = 0; |
6276 | int add_to_history = 0; | |
570d7624 JB |
6277 | int count; |
6278 | ||
265a9e55 | 6279 | if (NILP (dir)) |
570d7624 | 6280 | dir = current_buffer->directory; |
abd5b7f2 RS |
6281 | if (NILP (Ffile_name_absolute_p (dir))) |
6282 | dir = Fexpand_file_name (dir, Qnil); | |
3b7f6e60 | 6283 | if (NILP (default_filename)) |
abd5b7f2 RS |
6284 | default_filename |
6285 | = (!NILP (initial) | |
6286 | ? Fexpand_file_name (initial, dir) | |
6287 | : current_buffer->filename); | |
570d7624 JB |
6288 | |
6289 | /* If dir starts with user's homedir, change that to ~. */ | |
6290 | homedir = (char *) egetenv ("HOME"); | |
199607e4 | 6291 | #ifdef DOS_NT |
5990851d | 6292 | /* homedir can be NULL in temacs, since Vglobal_environment is not |
417c884a EZ |
6293 | yet set up. We shouldn't crash in that case. */ |
6294 | if (homedir != 0) | |
6295 | { | |
6296 | homedir = strcpy (alloca (strlen (homedir) + 1), homedir); | |
6297 | CORRECT_DIR_SEPS (homedir); | |
6298 | } | |
199607e4 | 6299 | #endif |
d7231f93 KH |
6300 | if (homedir != 0) |
6301 | decoded_homedir | |
6302 | = DECODE_FILE (make_unibyte_string (homedir, strlen (homedir))); | |
570d7624 | 6303 | if (homedir != 0 |
93c30b5f | 6304 | && STRINGP (dir) |
d7231f93 KH |
6305 | && !strncmp (SDATA (decoded_homedir), SDATA (dir), |
6306 | SBYTES (decoded_homedir)) | |
6307 | && IS_DIRECTORY_SEP (SREF (dir, SBYTES (decoded_homedir)))) | |
570d7624 | 6308 | { |
60204046 | 6309 | dir = Fsubstring (dir, make_number (SCHARS (decoded_homedir)), Qnil); |
d7231f93 | 6310 | dir = concat2 (build_string ("~"), dir); |
570d7624 | 6311 | } |
8d6d9fef AS |
6312 | /* Likewise for default_filename. */ |
6313 | if (homedir != 0 | |
6314 | && STRINGP (default_filename) | |
d7231f93 KH |
6315 | && !strncmp (SDATA (decoded_homedir), SDATA (default_filename), |
6316 | SBYTES (decoded_homedir)) | |
6317 | && IS_DIRECTORY_SEP (SREF (default_filename, SBYTES (decoded_homedir)))) | |
8d6d9fef AS |
6318 | { |
6319 | default_filename | |
d7231f93 | 6320 | = Fsubstring (default_filename, |
60204046 | 6321 | make_number (SCHARS (decoded_homedir)), Qnil); |
d7231f93 | 6322 | default_filename = concat2 (build_string ("~"), default_filename); |
8d6d9fef AS |
6323 | } |
6324 | if (!NILP (default_filename)) | |
b537a6c7 | 6325 | { |
b7826503 | 6326 | CHECK_STRING (default_filename); |
b537a6c7 RS |
6327 | default_filename = double_dollars (default_filename); |
6328 | } | |
570d7624 | 6329 | |
58cc3710 | 6330 | if (insert_default_directory && STRINGP (dir)) |
570d7624 JB |
6331 | { |
6332 | insdef = dir; | |
265a9e55 | 6333 | if (!NILP (initial)) |
570d7624 | 6334 | { |
15c65264 | 6335 | Lisp_Object args[2], pos; |
570d7624 JB |
6336 | |
6337 | args[0] = insdef; | |
6338 | args[1] = initial; | |
6339 | insdef = Fconcat (2, args); | |
d5db4077 | 6340 | pos = make_number (SCHARS (double_dollars (dir))); |
8d6d9fef | 6341 | insdef = Fcons (double_dollars (insdef), pos); |
570d7624 | 6342 | } |
6e710ae5 | 6343 | else |
8d6d9fef | 6344 | insdef = double_dollars (insdef); |
570d7624 | 6345 | } |
58cc3710 | 6346 | else if (STRINGP (initial)) |
8d6d9fef | 6347 | insdef = Fcons (double_dollars (initial), make_number (0)); |
570d7624 | 6348 | else |
8d6d9fef | 6349 | insdef = Qnil; |
570d7624 | 6350 | |
59ffe07d KS |
6351 | if (!NILP (Vread_file_name_function)) |
6352 | { | |
6353 | Lisp_Object args[7]; | |
6354 | ||
6355 | GCPRO2 (insdef, default_filename); | |
6356 | args[0] = Vread_file_name_function; | |
6357 | args[1] = prompt; | |
6358 | args[2] = dir; | |
6359 | args[3] = default_filename; | |
6360 | args[4] = mustmatch; | |
6361 | args[5] = initial; | |
6362 | args[6] = predicate; | |
6363 | RETURN_UNGCPRO (Ffuncall (7, args)); | |
6364 | } | |
6365 | ||
aed13378 | 6366 | count = SPECPDL_INDEX (); |
94b9aaa2 | 6367 | specbind (Qcompletion_ignore_case, |
316ef0dc | 6368 | read_file_name_completion_ignore_case ? Qt : Qnil); |
a79485af | 6369 | specbind (intern ("minibuffer-completing-file-name"), Qt); |
efdc16c9 | 6370 | specbind (intern ("read-file-name-predicate"), |
59ffe07d | 6371 | (NILP (predicate) ? Qfile_exists_p : predicate)); |
a79485af | 6372 | |
3b7f6e60 | 6373 | GCPRO2 (insdef, default_filename); |
c60ee5e7 | 6374 | |
b15325b2 | 6375 | #if defined (USE_MOTIF) || defined (HAVE_NTGUI) || defined (USE_GTK) || defined (HAVE_CARBON) |
88208bb8 | 6376 | if (! NILP (Fnext_read_file_uses_dialog_p ())) |
9c856db9 | 6377 | { |
9172b88d GM |
6378 | /* If DIR contains a file name, split it. */ |
6379 | Lisp_Object file; | |
6380 | file = Ffile_name_nondirectory (dir); | |
d5db4077 | 6381 | if (SCHARS (file) && NILP (default_filename)) |
9172b88d GM |
6382 | { |
6383 | default_filename = file; | |
6384 | dir = Ffile_name_directory (dir); | |
6385 | } | |
f73f57bd JR |
6386 | if (!NILP(default_filename)) |
6387 | default_filename = Fexpand_file_name (default_filename, dir); | |
f9d64bb3 JD |
6388 | val = Fx_file_dialog (prompt, dir, default_filename, mustmatch, |
6389 | EQ (predicate, Qfile_directory_p) ? Qt : Qnil); | |
9c856db9 GM |
6390 | add_to_history = 1; |
6391 | } | |
6392 | else | |
6393 | #endif | |
6394 | val = Fcompleting_read (prompt, intern ("read-file-name-internal"), | |
6395 | dir, mustmatch, insdef, | |
6396 | Qfile_name_history, default_filename, Qnil); | |
62f555a5 RS |
6397 | |
6398 | tem = Fsymbol_value (Qfile_name_history); | |
03699b14 | 6399 | if (CONSP (tem) && EQ (XCAR (tem), val)) |
62f555a5 RS |
6400 | replace_in_history = 1; |
6401 | ||
6402 | /* If Fcompleting_read returned the inserted default string itself | |
a8c828be RS |
6403 | (rather than a new string with the same contents), |
6404 | it has to mean that the user typed RET with the minibuffer empty. | |
6405 | In that case, we really want to return "" | |
6406 | so that commands such as set-visited-file-name can distinguish. */ | |
6407 | if (EQ (val, default_filename)) | |
62f555a5 RS |
6408 | { |
6409 | /* In this case, Fcompleting_read has not added an element | |
6410 | to the history. Maybe we should. */ | |
6411 | if (! replace_in_history) | |
6412 | add_to_history = 1; | |
6413 | ||
80bad45f | 6414 | val = empty_unibyte_string; |
62f555a5 | 6415 | } |
570d7624 | 6416 | |
570d7624 | 6417 | unbind_to (count, Qnil); |
570d7624 | 6418 | UNGCPRO; |
265a9e55 | 6419 | if (NILP (val)) |
570d7624 | 6420 | error ("No file name specified"); |
62f555a5 | 6421 | |
8d6d9fef | 6422 | tem = Fstring_equal (val, CONSP (insdef) ? XCAR (insdef) : insdef); |
62f555a5 | 6423 | |
3b7f6e60 | 6424 | if (!NILP (tem) && !NILP (default_filename)) |
62f555a5 | 6425 | val = default_filename; |
62f555a5 | 6426 | val = Fsubstitute_in_file_name (val); |
570d7624 | 6427 | |
62f555a5 RS |
6428 | if (replace_in_history) |
6429 | /* Replace what Fcompleting_read added to the history | |
6430 | with what we will actually return. */ | |
75fa7206 RS |
6431 | { |
6432 | Lisp_Object val1 = double_dollars (val); | |
6433 | tem = Fsymbol_value (Qfile_name_history); | |
c1558952 | 6434 | if (history_delete_duplicates) |
75fa7206 RS |
6435 | XSETCDR (tem, Fdelete (val1, XCDR(tem))); |
6436 | XSETCAR (tem, val1); | |
6437 | } | |
62f555a5 | 6438 | else if (add_to_history) |
570d7624 | 6439 | { |
62f555a5 RS |
6440 | /* Add the value to the history--but not if it matches |
6441 | the last value already there. */ | |
8d6d9fef | 6442 | Lisp_Object val1 = double_dollars (val); |
62f555a5 | 6443 | tem = Fsymbol_value (Qfile_name_history); |
03699b14 | 6444 | if (! CONSP (tem) || NILP (Fequal (XCAR (tem), val1))) |
75fa7206 RS |
6445 | { |
6446 | if (history_delete_duplicates) tem = Fdelete (val1, tem); | |
6447 | Fset (Qfile_name_history, Fcons (val1, tem)); | |
6448 | } | |
570d7624 | 6449 | } |
efdc16c9 | 6450 | |
62f555a5 | 6451 | return val; |
570d7624 | 6452 | } |
9c856db9 | 6453 | |
570d7624 | 6454 | \f |
dbda5089 GV |
6455 | void |
6456 | init_fileio_once () | |
6457 | { | |
6458 | /* Must be set before any path manipulation is performed. */ | |
6459 | XSETFASTINT (Vdirectory_sep_char, '/'); | |
6460 | } | |
6461 | ||
9c856db9 | 6462 | \f |
dfcf069d | 6463 | void |
570d7624 JB |
6464 | syms_of_fileio () |
6465 | { | |
f6c9b683 | 6466 | Qoperations = intern ("operations"); |
0bf2eed2 | 6467 | Qexpand_file_name = intern ("expand-file-name"); |
273e0829 | 6468 | Qsubstitute_in_file_name = intern ("substitute-in-file-name"); |
0bf2eed2 RS |
6469 | Qdirectory_file_name = intern ("directory-file-name"); |
6470 | Qfile_name_directory = intern ("file-name-directory"); | |
6471 | Qfile_name_nondirectory = intern ("file-name-nondirectory"); | |
642ef245 | 6472 | Qunhandled_file_name_directory = intern ("unhandled-file-name-directory"); |
0bf2eed2 | 6473 | Qfile_name_as_directory = intern ("file-name-as-directory"); |
32f4334d | 6474 | Qcopy_file = intern ("copy-file"); |
a6e6e718 | 6475 | Qmake_directory_internal = intern ("make-directory-internal"); |
b272d624 | 6476 | Qmake_directory = intern ("make-directory"); |
32f4334d RS |
6477 | Qdelete_directory = intern ("delete-directory"); |
6478 | Qdelete_file = intern ("delete-file"); | |
6479 | Qrename_file = intern ("rename-file"); | |
6480 | Qadd_name_to_file = intern ("add-name-to-file"); | |
6481 | Qmake_symbolic_link = intern ("make-symbolic-link"); | |
6482 | Qfile_exists_p = intern ("file-exists-p"); | |
6483 | Qfile_executable_p = intern ("file-executable-p"); | |
6484 | Qfile_readable_p = intern ("file-readable-p"); | |
32f4334d | 6485 | Qfile_writable_p = intern ("file-writable-p"); |
1f8653eb RS |
6486 | Qfile_symlink_p = intern ("file-symlink-p"); |
6487 | Qaccess_file = intern ("access-file"); | |
32f4334d | 6488 | Qfile_directory_p = intern ("file-directory-p"); |
adedc71d | 6489 | Qfile_regular_p = intern ("file-regular-p"); |
32f4334d RS |
6490 | Qfile_accessible_directory_p = intern ("file-accessible-directory-p"); |
6491 | Qfile_modes = intern ("file-modes"); | |
6492 | Qset_file_modes = intern ("set-file-modes"); | |
819da85b | 6493 | Qset_file_times = intern ("set-file-times"); |
32f4334d RS |
6494 | Qfile_newer_than_file_p = intern ("file-newer-than-file-p"); |
6495 | Qinsert_file_contents = intern ("insert-file-contents"); | |
6496 | Qwrite_region = intern ("write-region"); | |
6497 | Qverify_visited_file_modtime = intern ("verify-visited-file-modtime"); | |
3ec46acd | 6498 | Qset_visited_file_modtime = intern ("set-visited-file-modtime"); |
356a6224 | 6499 | Qauto_save_coding = intern ("auto-save-coding"); |
32f4334d | 6500 | |
f6c9b683 | 6501 | staticpro (&Qoperations); |
642ef245 | 6502 | staticpro (&Qexpand_file_name); |
273e0829 | 6503 | staticpro (&Qsubstitute_in_file_name); |
642ef245 JB |
6504 | staticpro (&Qdirectory_file_name); |
6505 | staticpro (&Qfile_name_directory); | |
6506 | staticpro (&Qfile_name_nondirectory); | |
6507 | staticpro (&Qunhandled_file_name_directory); | |
6508 | staticpro (&Qfile_name_as_directory); | |
15c65264 | 6509 | staticpro (&Qcopy_file); |
c34b559d | 6510 | staticpro (&Qmake_directory_internal); |
b272d624 | 6511 | staticpro (&Qmake_directory); |
15c65264 RS |
6512 | staticpro (&Qdelete_directory); |
6513 | staticpro (&Qdelete_file); | |
6514 | staticpro (&Qrename_file); | |
6515 | staticpro (&Qadd_name_to_file); | |
6516 | staticpro (&Qmake_symbolic_link); | |
6517 | staticpro (&Qfile_exists_p); | |
6518 | staticpro (&Qfile_executable_p); | |
6519 | staticpro (&Qfile_readable_p); | |
15c65264 | 6520 | staticpro (&Qfile_writable_p); |
1f8653eb RS |
6521 | staticpro (&Qaccess_file); |
6522 | staticpro (&Qfile_symlink_p); | |
15c65264 | 6523 | staticpro (&Qfile_directory_p); |
adedc71d | 6524 | staticpro (&Qfile_regular_p); |
15c65264 RS |
6525 | staticpro (&Qfile_accessible_directory_p); |
6526 | staticpro (&Qfile_modes); | |
6527 | staticpro (&Qset_file_modes); | |
819da85b | 6528 | staticpro (&Qset_file_times); |
15c65264 RS |
6529 | staticpro (&Qfile_newer_than_file_p); |
6530 | staticpro (&Qinsert_file_contents); | |
6531 | staticpro (&Qwrite_region); | |
6532 | staticpro (&Qverify_visited_file_modtime); | |
0a61794b | 6533 | staticpro (&Qset_visited_file_modtime); |
356a6224 | 6534 | staticpro (&Qauto_save_coding); |
642ef245 JB |
6535 | |
6536 | Qfile_name_history = intern ("file-name-history"); | |
6537 | Fset (Qfile_name_history, Qnil); | |
15c65264 RS |
6538 | staticpro (&Qfile_name_history); |
6539 | ||
570d7624 JB |
6540 | Qfile_error = intern ("file-error"); |
6541 | staticpro (&Qfile_error); | |
199607e4 | 6542 | Qfile_already_exists = intern ("file-already-exists"); |
570d7624 | 6543 | staticpro (&Qfile_already_exists); |
c0b7b21c RS |
6544 | Qfile_date_error = intern ("file-date-error"); |
6545 | staticpro (&Qfile_date_error); | |
505ab9bc RS |
6546 | Qexcl = intern ("excl"); |
6547 | staticpro (&Qexcl); | |
570d7624 | 6548 | |
5e570b75 | 6549 | #ifdef DOS_NT |
4c3c22f3 RS |
6550 | Qfind_buffer_file_type = intern ("find-buffer-file-type"); |
6551 | staticpro (&Qfind_buffer_file_type); | |
5e570b75 | 6552 | #endif /* DOS_NT */ |
4c3c22f3 | 6553 | |
b1d1b865 | 6554 | DEFVAR_LISP ("file-name-coding-system", &Vfile_name_coding_system, |
8c1a1077 | 6555 | doc: /* *Coding system for encoding file names. |
346ebf53 | 6556 | If it is nil, `default-file-name-coding-system' (which see) is used. */); |
b1d1b865 RS |
6557 | Vfile_name_coding_system = Qnil; |
6558 | ||
cd913586 KH |
6559 | DEFVAR_LISP ("default-file-name-coding-system", |
6560 | &Vdefault_file_name_coding_system, | |
8c1a1077 | 6561 | doc: /* Default coding system for encoding file names. |
346ebf53 | 6562 | This variable is used only when `file-name-coding-system' is nil. |
8c1a1077 | 6563 | |
346ebf53 | 6564 | This variable is set/changed by the command `set-language-environment'. |
8c1a1077 | 6565 | User should not set this variable manually, |
346ebf53 | 6566 | instead use `file-name-coding-system' to get a constant encoding |
8c1a1077 | 6567 | of file names regardless of the current language environment. */); |
cd913586 KH |
6568 | Vdefault_file_name_coding_system = Qnil; |
6569 | ||
0d420e88 BG |
6570 | Qformat_decode = intern ("format-decode"); |
6571 | staticpro (&Qformat_decode); | |
6572 | Qformat_annotate_function = intern ("format-annotate-function"); | |
6573 | staticpro (&Qformat_annotate_function); | |
2080470e KH |
6574 | Qafter_insert_file_set_coding = intern ("after-insert-file-set-coding"); |
6575 | staticpro (&Qafter_insert_file_set_coding); | |
efdc16c9 | 6576 | |
d6a3cc15 RS |
6577 | Qcar_less_than_car = intern ("car-less-than-car"); |
6578 | staticpro (&Qcar_less_than_car); | |
6579 | ||
570d7624 | 6580 | Fput (Qfile_error, Qerror_conditions, |
24b1ddad | 6581 | list2 (Qfile_error, Qerror)); |
570d7624 JB |
6582 | Fput (Qfile_error, Qerror_message, |
6583 | build_string ("File error")); | |
6584 | ||
6585 | Fput (Qfile_already_exists, Qerror_conditions, | |
24b1ddad | 6586 | list3 (Qfile_already_exists, Qfile_error, Qerror)); |
570d7624 JB |
6587 | Fput (Qfile_already_exists, Qerror_message, |
6588 | build_string ("File already exists")); | |
6589 | ||
c0b7b21c | 6590 | Fput (Qfile_date_error, Qerror_conditions, |
24b1ddad | 6591 | list3 (Qfile_date_error, Qfile_error, Qerror)); |
c0b7b21c RS |
6592 | Fput (Qfile_date_error, Qerror_message, |
6593 | build_string ("Cannot set file date")); | |
6594 | ||
59ffe07d KS |
6595 | DEFVAR_LISP ("read-file-name-function", &Vread_file_name_function, |
6596 | doc: /* If this is non-nil, `read-file-name' does its work by calling this function. */); | |
6597 | Vread_file_name_function = Qnil; | |
6598 | ||
6599 | DEFVAR_LISP ("read-file-name-predicate", &Vread_file_name_predicate, | |
6600 | doc: /* Current predicate used by `read-file-name-internal'. */); | |
6601 | Vread_file_name_predicate = Qnil; | |
6602 | ||
316ef0dc JPW |
6603 | DEFVAR_BOOL ("read-file-name-completion-ignore-case", &read_file_name_completion_ignore_case, |
6604 | doc: /* *Non-nil means when reading a file name completion ignores case. */); | |
6605 | #if defined VMS || defined DOS_NT || defined MAC_OS | |
6606 | read_file_name_completion_ignore_case = 1; | |
6607 | #else | |
6608 | read_file_name_completion_ignore_case = 0; | |
6609 | #endif | |
6610 | ||
570d7624 | 6611 | DEFVAR_BOOL ("insert-default-directory", &insert_default_directory, |
6b61353c KH |
6612 | doc: /* *Non-nil means when reading a filename start with default dir in minibuffer. |
6613 | If the initial minibuffer contents are non-empty, you can usually | |
6614 | request a default filename by typing RETURN without editing. For some | |
6615 | commands, exiting with an empty minibuffer has a special meaning, | |
6616 | such as making the current buffer visit no file in the case of | |
6617 | `set-visited-file-name'. | |
6618 | If this variable is non-nil, the minibuffer contents are always | |
6619 | initially non-empty and typing RETURN without editing will fetch the | |
6620 | default name, if one is provided. Note however that this default name | |
6621 | is not necessarily the name originally inserted in the minibuffer, if | |
6622 | that is just the default directory. | |
6623 | If this variable is nil, the minibuffer often starts out empty. In | |
6624 | that case you may have to explicitly fetch the next history element to | |
6625 | request the default name. */); | |
570d7624 JB |
6626 | insert_default_directory = 1; |
6627 | ||
6628 | DEFVAR_BOOL ("vms-stmlf-recfm", &vms_stmlf_recfm, | |
8c1a1077 PJ |
6629 | doc: /* *Non-nil means write new files with record format `stmlf'. |
6630 | nil means use format `var'. This variable is meaningful only on VMS. */); | |
570d7624 JB |
6631 | vms_stmlf_recfm = 0; |
6632 | ||
199607e4 | 6633 | DEFVAR_LISP ("directory-sep-char", &Vdirectory_sep_char, |
8c1a1077 | 6634 | doc: /* Directory separator character for built-in functions that return file names. |
d57563b6 | 6635 | The value is always ?/. Don't use this variable, just use `/'. */); |
199607e4 | 6636 | |
1d1826db | 6637 | DEFVAR_LISP ("file-name-handler-alist", &Vfile_name_handler_alist, |
8c1a1077 PJ |
6638 | doc: /* *Alist of elements (REGEXP . HANDLER) for file names handled specially. |
6639 | If a file name matches REGEXP, then all I/O on that file is done by calling | |
6640 | HANDLER. | |
6641 | ||
6642 | The first argument given to HANDLER is the name of the I/O primitive | |
6643 | to be handled; the remaining arguments are the arguments that were | |
6644 | passed to that primitive. For example, if you do | |
6645 | (file-exists-p FILENAME) | |
6646 | and FILENAME is handled by HANDLER, then HANDLER is called like this: | |
6647 | (funcall HANDLER 'file-exists-p FILENAME) | |
6648 | The function `find-file-name-handler' checks this list for a handler | |
6649 | for its argument. */); | |
09121adc RS |
6650 | Vfile_name_handler_alist = Qnil; |
6651 | ||
0414b394 KH |
6652 | DEFVAR_LISP ("set-auto-coding-function", |
6653 | &Vset_auto_coding_function, | |
8c1a1077 PJ |
6654 | doc: /* If non-nil, a function to call to decide a coding system of file. |
6655 | Two arguments are passed to this function: the file name | |
6656 | and the length of a file contents following the point. | |
6657 | This function should return a coding system to decode the file contents. | |
6658 | It should check the file name against `auto-coding-alist'. | |
6659 | If no coding system is decided, it should check a coding system | |
6660 | specified in the heading lines with the format: | |
6661 | -*- ... coding: CODING-SYSTEM; ... -*- | |
6662 | or local variable spec of the tailing lines with `coding:' tag. */); | |
0414b394 | 6663 | Vset_auto_coding_function = Qnil; |
c9e82392 | 6664 | |
d6a3cc15 | 6665 | DEFVAR_LISP ("after-insert-file-functions", &Vafter_insert_file_functions, |
8c1a1077 | 6666 | doc: /* A list of functions to be called at the end of `insert-file-contents'. |
0cf9f5b5 RS |
6667 | Each is passed one argument, the number of characters inserted, |
6668 | with point at the start of the inserted text. Each function | |
6669 | should leave point the same, and return the new character count. | |
cf6d2357 RS |
6670 | If `insert-file-contents' is intercepted by a handler from |
6671 | `file-name-handler-alist', that handler is responsible for calling the | |
6672 | functions in `after-insert-file-functions' if appropriate. */); | |
d6a3cc15 RS |
6673 | Vafter_insert_file_functions = Qnil; |
6674 | ||
6675 | DEFVAR_LISP ("write-region-annotate-functions", &Vwrite_region_annotate_functions, | |
8c1a1077 PJ |
6676 | doc: /* A list of functions to be called at the start of `write-region'. |
6677 | Each is passed two arguments, START and END as for `write-region'. | |
6678 | These are usually two numbers but not always; see the documentation | |
6679 | for `write-region'. The function should return a list of pairs | |
6680 | of the form (POSITION . STRING), consisting of strings to be effectively | |
6681 | inserted at the specified positions of the file being written (1 means to | |
6682 | insert before the first byte written). The POSITIONs must be sorted into | |
6683 | increasing order. If there are several functions in the list, the several | |
28c3eb5a | 6684 | lists are merged destructively. Alternatively, the function can return |
bd235610 SM |
6685 | with a different buffer current; in that case it should pay attention |
6686 | to the annotations returned by previous functions and listed in | |
6687 | `write-region-annotations-so-far'.*/); | |
d6a3cc15 | 6688 | Vwrite_region_annotate_functions = Qnil; |
bd235610 SM |
6689 | staticpro (&Qwrite_region_annotate_functions); |
6690 | Qwrite_region_annotate_functions | |
6691 | = intern ("write-region-annotate-functions"); | |
d6a3cc15 | 6692 | |
6fc6f94b RS |
6693 | DEFVAR_LISP ("write-region-annotations-so-far", |
6694 | &Vwrite_region_annotations_so_far, | |
8c1a1077 PJ |
6695 | doc: /* When an annotation function is called, this holds the previous annotations. |
6696 | These are the annotations made by other annotation functions | |
6697 | that were already called. See also `write-region-annotate-functions'. */); | |
6fc6f94b RS |
6698 | Vwrite_region_annotations_so_far = Qnil; |
6699 | ||
82c2d839 | 6700 | DEFVAR_LISP ("inhibit-file-name-handlers", &Vinhibit_file_name_handlers, |
8c1a1077 PJ |
6701 | doc: /* A list of file name handlers that temporarily should not be used. |
6702 | This applies only to the operation `inhibit-file-name-operation'. */); | |
82c2d839 RS |
6703 | Vinhibit_file_name_handlers = Qnil; |
6704 | ||
a65970a0 | 6705 | DEFVAR_LISP ("inhibit-file-name-operation", &Vinhibit_file_name_operation, |
8c1a1077 | 6706 | doc: /* The operation for which `inhibit-file-name-handlers' is applicable. */); |
a65970a0 RS |
6707 | Vinhibit_file_name_operation = Qnil; |
6708 | ||
e54d3b5d | 6709 | DEFVAR_LISP ("auto-save-list-file-name", &Vauto_save_list_file_name, |
8c1a1077 PJ |
6710 | doc: /* File name in which we write a list of all auto save file names. |
6711 | This variable is initialized automatically from `auto-save-list-file-prefix' | |
6712 | shortly after Emacs reads your `.emacs' file, if you have not yet given it | |
6713 | a non-nil value. */); | |
e54d3b5d RS |
6714 | Vauto_save_list_file_name = Qnil; |
6715 | ||
ccf61795 RF |
6716 | #ifdef HAVE_FSYNC |
6717 | DEFVAR_BOOL ("write-region-inhibit-fsync", &write_region_inhibit_fsync, | |
e3f509dd RF |
6718 | doc: /* *Non-nil means don't call fsync in `write-region'. |
6719 | This variable affects calls to `write-region' as well as save commands. | |
6720 | A non-nil value may result in data loss! */); | |
ccf61795 RF |
6721 | write_region_inhibit_fsync = 0; |
6722 | #endif | |
6723 | ||
642ef245 | 6724 | defsubr (&Sfind_file_name_handler); |
570d7624 JB |
6725 | defsubr (&Sfile_name_directory); |
6726 | defsubr (&Sfile_name_nondirectory); | |
642ef245 | 6727 | defsubr (&Sunhandled_file_name_directory); |
570d7624 JB |
6728 | defsubr (&Sfile_name_as_directory); |
6729 | defsubr (&Sdirectory_file_name); | |
6730 | defsubr (&Smake_temp_name); | |
6731 | defsubr (&Sexpand_file_name); | |
6732 | defsubr (&Ssubstitute_in_file_name); | |
6733 | defsubr (&Scopy_file); | |
9bbe01fb | 6734 | defsubr (&Smake_directory_internal); |
aa734e17 | 6735 | defsubr (&Sdelete_directory); |
570d7624 JB |
6736 | defsubr (&Sdelete_file); |
6737 | defsubr (&Srename_file); | |
6738 | defsubr (&Sadd_name_to_file); | |
6739 | #ifdef S_IFLNK | |
6740 | defsubr (&Smake_symbolic_link); | |
6741 | #endif /* S_IFLNK */ | |
6742 | #ifdef VMS | |
6743 | defsubr (&Sdefine_logical_name); | |
6744 | #endif /* VMS */ | |
6745 | #ifdef HPUX_NET | |
6746 | defsubr (&Ssysnetunam); | |
6747 | #endif /* HPUX_NET */ | |
6748 | defsubr (&Sfile_name_absolute_p); | |
6749 | defsubr (&Sfile_exists_p); | |
6750 | defsubr (&Sfile_executable_p); | |
6751 | defsubr (&Sfile_readable_p); | |
6752 | defsubr (&Sfile_writable_p); | |
1f8653eb | 6753 | defsubr (&Saccess_file); |
570d7624 JB |
6754 | defsubr (&Sfile_symlink_p); |
6755 | defsubr (&Sfile_directory_p); | |
b72dea2a | 6756 | defsubr (&Sfile_accessible_directory_p); |
f793dc6c | 6757 | defsubr (&Sfile_regular_p); |
570d7624 JB |
6758 | defsubr (&Sfile_modes); |
6759 | defsubr (&Sset_file_modes); | |
819da85b | 6760 | defsubr (&Sset_file_times); |
c24e9a53 RS |
6761 | defsubr (&Sset_default_file_modes); |
6762 | defsubr (&Sdefault_file_modes); | |
570d7624 JB |
6763 | defsubr (&Sfile_newer_than_file_p); |
6764 | defsubr (&Sinsert_file_contents); | |
6765 | defsubr (&Swrite_region); | |
d6a3cc15 | 6766 | defsubr (&Scar_less_than_car); |
570d7624 JB |
6767 | defsubr (&Sverify_visited_file_modtime); |
6768 | defsubr (&Sclear_visited_file_modtime); | |
f5d5eccf | 6769 | defsubr (&Svisited_file_modtime); |
570d7624 JB |
6770 | defsubr (&Sset_visited_file_modtime); |
6771 | defsubr (&Sdo_auto_save); | |
6772 | defsubr (&Sset_buffer_auto_saved); | |
b60247d9 | 6773 | defsubr (&Sclear_buffer_auto_save_failure); |
570d7624 JB |
6774 | defsubr (&Srecent_auto_save_p); |
6775 | ||
6776 | defsubr (&Sread_file_name_internal); | |
6777 | defsubr (&Sread_file_name); | |
88208bb8 | 6778 | defsubr (&Snext_read_file_uses_dialog_p); |
85ffea93 | 6779 | |
697c17a2 | 6780 | #ifdef HAVE_SYNC |
85ffea93 | 6781 | defsubr (&Sunix_sync); |
483a2e10 | 6782 | #endif |
570d7624 | 6783 | } |
6b61353c KH |
6784 | |
6785 | /* arch-tag: 64ba3fd7-f844-4fb2-ba4b-427eb928786c | |
6786 | (do not change this comment) */ |