Commit | Line | Data |
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570d7624 | 1 | /* File IO for GNU Emacs. |
e9bffc61 GM |
2 | |
3 | Copyright (C) 1985, 1986, 1987, 1988, 1993, 1994, 1995, 1996, 1997, | |
4 | 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, | |
5 | 2009, 2010, 2011 Free Software Foundation, Inc. | |
570d7624 JB |
6 | |
7 | This file is part of GNU Emacs. | |
8 | ||
9ec0b715 | 9 | GNU Emacs is free software: you can redistribute it and/or modify |
570d7624 | 10 | it under the terms of the GNU General Public License as published by |
9ec0b715 GM |
11 | the Free Software Foundation, either version 3 of the License, or |
12 | (at your option) any later version. | |
570d7624 JB |
13 | |
14 | GNU Emacs is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
9ec0b715 | 20 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
570d7624 | 21 | |
18160b98 | 22 | #include <config.h> |
77a28bbf | 23 | #include <limits.h> |
bb369dc6 | 24 | #include <fcntl.h> |
1b335d29 | 25 | #include <stdio.h> |
570d7624 JB |
26 | #include <sys/types.h> |
27 | #include <sys/stat.h> | |
d7306fe6 | 28 | #include <setjmp.h> |
29beb080 | 29 | #include <unistd.h> |
29beb080 | 30 | |
f73b0ada BF |
31 | #if !defined (S_ISLNK) && defined (S_IFLNK) |
32 | # define S_ISLNK(m) (((m) & S_IFMT) == S_IFLNK) | |
33 | #endif | |
34 | ||
bb369dc6 RS |
35 | #if !defined (S_ISFIFO) && defined (S_IFIFO) |
36 | # define S_ISFIFO(m) (((m) & S_IFMT) == S_IFIFO) | |
37 | #endif | |
38 | ||
f73b0ada BF |
39 | #if !defined (S_ISREG) && defined (S_IFREG) |
40 | # define S_ISREG(m) (((m) & S_IFMT) == S_IFREG) | |
41 | #endif | |
42 | ||
5b9c0a1d | 43 | #ifdef HAVE_PWD_H |
570d7624 | 44 | #include <pwd.h> |
bfb61299 JB |
45 | #endif |
46 | ||
570d7624 | 47 | #include <ctype.h> |
570d7624 JB |
48 | #include <errno.h> |
49 | ||
574c05e2 KK |
50 | #ifdef HAVE_LIBSELINUX |
51 | #include <selinux/selinux.h> | |
52 | #include <selinux/context.h> | |
53 | #endif | |
54 | ||
570d7624 | 55 | #include "lisp.h" |
8d4e077b | 56 | #include "intervals.h" |
570d7624 | 57 | #include "buffer.h" |
db327c7e | 58 | #include "character.h" |
6fdaa9a0 | 59 | #include "coding.h" |
570d7624 | 60 | #include "window.h" |
67c08d6c | 61 | #include "blockinput.h" |
385ed61f KL |
62 | #include "frame.h" |
63 | #include "dispextern.h" | |
570d7624 | 64 | |
5e570b75 RS |
65 | #ifdef WINDOWSNT |
66 | #define NOMINMAX 1 | |
67 | #include <windows.h> | |
5e570b75 RS |
68 | #include <fcntl.h> |
69 | #endif /* not WINDOWSNT */ | |
70 | ||
7990d02a EZ |
71 | #ifdef MSDOS |
72 | #include "msdos.h" | |
73 | #include <sys/param.h> | |
7990d02a | 74 | #include <fcntl.h> |
7990d02a | 75 | #endif |
7990d02a | 76 | |
199607e4 | 77 | #ifdef DOS_NT |
199607e4 RS |
78 | /* On Windows, drive letters must be alphabetic - on DOS, the Netware |
79 | redirector allows the six letters between 'Z' and 'a' as well. */ | |
80 | #ifdef MSDOS | |
81 | #define IS_DRIVE(x) ((x) >= 'A' && (x) <= 'z') | |
82 | #endif | |
83 | #ifdef WINDOWSNT | |
84 | #define IS_DRIVE(x) isalpha (x) | |
85 | #endif | |
f54b565c MB |
86 | /* Need to lower-case the drive letter, or else expanded |
87 | filenames will sometimes compare inequal, because | |
88 | `expand-file-name' doesn't always down-case the drive letter. */ | |
89 | #define DRIVE_LETTER(x) (tolower (x)) | |
199607e4 RS |
90 | #endif |
91 | ||
de5bf5d3 | 92 | #include "systime.h" |
570d7624 JB |
93 | |
94 | #ifdef HPUX | |
95 | #include <netio.h> | |
47e7b9e5 | 96 | #endif |
570d7624 | 97 | |
9c856db9 | 98 | #include "commands.h" |
9c856db9 | 99 | |
8f6df9b5 EZ |
100 | #ifndef S_ISLNK |
101 | # define lstat stat | |
102 | #endif | |
103 | ||
c1558952 TTN |
104 | #ifndef FILE_SYSTEM_CASE |
105 | #define FILE_SYSTEM_CASE(filename) (filename) | |
106 | #endif | |
107 | ||
570d7624 JB |
108 | /* Nonzero during writing of auto-save files */ |
109 | int auto_saving; | |
110 | ||
111 | /* Set by auto_save_1 to mode of original file so Fwrite_region will create | |
112 | a new file with the same mode as the original */ | |
113 | int auto_save_mode_bits; | |
114 | ||
ca730bf0 CY |
115 | /* Set by auto_save_1 if an error occurred during the last auto-save. */ |
116 | int auto_save_error_occurred; | |
117 | ||
356a6224 KH |
118 | /* The symbol bound to coding-system-for-read when |
119 | insert-file-contents is called for recovering a file. This is not | |
120 | an actual coding system name, but just an indicator to tell | |
121 | insert-file-contents to use `emacs-mule' with a special flag for | |
122 | auto saving and recovering a file. */ | |
123 | Lisp_Object Qauto_save_coding; | |
124 | ||
f6c9b683 RS |
125 | /* Property name of a file name handler, |
126 | which gives a list of operations it handles.. */ | |
127 | Lisp_Object Qoperations; | |
128 | ||
0d420e88 BG |
129 | /* Lisp functions for translating file formats */ |
130 | Lisp_Object Qformat_decode, Qformat_annotate_function; | |
131 | ||
2080470e | 132 | /* Lisp function for setting buffer-file-coding-system and the |
b6426b03 | 133 | multibyteness of the current buffer after inserting a file. */ |
2080470e | 134 | Lisp_Object Qafter_insert_file_set_coding; |
b6426b03 | 135 | |
bd235610 | 136 | Lisp_Object Qwrite_region_annotate_functions; |
67fbc0cb CY |
137 | /* Each time an annotation function changes the buffer, the new buffer |
138 | is added here. */ | |
139 | Lisp_Object Vwrite_region_annotation_buffers; | |
140 | ||
ccf61795 | 141 | #ifdef HAVE_FSYNC |
ccf61795 RF |
142 | #endif |
143 | ||
d2b66acf GM |
144 | Lisp_Object Qdelete_by_moving_to_trash; |
145 | ||
6cf29fe8 JR |
146 | /* Lisp function for moving files to trash. */ |
147 | Lisp_Object Qmove_file_to_trash; | |
148 | ||
8719abec CY |
149 | /* Lisp function for recursively copying directories. */ |
150 | Lisp_Object Qcopy_directory; | |
151 | ||
152 | /* Lisp function for recursively deleting directories. */ | |
153 | Lisp_Object Qdelete_directory; | |
154 | ||
c1c4693e | 155 | #ifdef WINDOWSNT |
c1c4693e RS |
156 | #endif |
157 | ||
c0b7b21c | 158 | Lisp_Object Qfile_error, Qfile_already_exists, Qfile_date_error; |
505ab9bc | 159 | Lisp_Object Qexcl; |
15c65264 RS |
160 | Lisp_Object Qfile_name_history; |
161 | ||
d6a3cc15 RS |
162 | Lisp_Object Qcar_less_than_car; |
163 | ||
f57e2426 J |
164 | static int a_write (int, Lisp_Object, int, int, |
165 | Lisp_Object *, struct coding_system *); | |
166 | static int e_write (int, Lisp_Object, int, int, struct coding_system *); | |
ce51c54c | 167 | |
ec7adf26 | 168 | \f |
5d01d666 | 169 | void |
971de7fb | 170 | report_file_error (const char *string, Lisp_Object data) |
570d7624 JB |
171 | { |
172 | Lisp_Object errstring; | |
505ab9bc | 173 | int errorno = errno; |
d7259fdb | 174 | char *str; |
570d7624 | 175 | |
ca9c0567 | 176 | synchronize_system_messages_locale (); |
d7259fdb KH |
177 | str = strerror (errorno); |
178 | errstring = code_convert_string_norecord (make_unibyte_string (str, | |
179 | strlen (str)), | |
68c45bf0 PE |
180 | Vlocale_coding_system, 0); |
181 | ||
570d7624 | 182 | while (1) |
505ab9bc RS |
183 | switch (errorno) |
184 | { | |
185 | case EEXIST: | |
24b1ddad | 186 | xsignal (Qfile_already_exists, Fcons (errstring, data)); |
505ab9bc RS |
187 | break; |
188 | default: | |
189 | /* System error messages are capitalized. Downcase the initial | |
39824137 EZ |
190 | unless it is followed by a slash. (The slash case caters to |
191 | error messages that begin with "I/O" or, in German, "E/A".) */ | |
d5443ffd KH |
192 | if (STRING_MULTIBYTE (errstring) |
193 | && ! EQ (Faref (errstring, make_number (1)), make_number ('/'))) | |
6c0969ca KH |
194 | { |
195 | int c; | |
196 | ||
51b59d79 | 197 | str = SSDATA (errstring); |
62a6e103 | 198 | c = STRING_CHAR (str); |
c7c7a80c | 199 | Faset (errstring, make_number (0), make_number (DOWNCASE (c))); |
6c0969ca | 200 | } |
505ab9bc | 201 | |
24b1ddad | 202 | xsignal (Qfile_error, |
505ab9bc RS |
203 | Fcons (build_string (string), Fcons (errstring, data))); |
204 | } | |
570d7624 | 205 | } |
b5148e85 | 206 | |
b27a1703 | 207 | Lisp_Object |
971de7fb | 208 | close_file_unwind (Lisp_Object fd) |
b5148e85 | 209 | { |
68c45bf0 | 210 | emacs_close (XFASTINT (fd)); |
b27a1703 | 211 | return Qnil; |
b5148e85 | 212 | } |
a1d2b64a RS |
213 | |
214 | /* Restore point, having saved it as a marker. */ | |
215 | ||
5dcde606 | 216 | Lisp_Object |
971de7fb | 217 | restore_point_unwind (Lisp_Object location) |
a1d2b64a | 218 | { |
ec7adf26 | 219 | Fgoto_char (location); |
a1d2b64a | 220 | Fset_marker (location, Qnil, Qnil); |
b27a1703 | 221 | return Qnil; |
a1d2b64a | 222 | } |
59c94f03 | 223 | |
570d7624 | 224 | \f |
0bf2eed2 | 225 | Lisp_Object Qexpand_file_name; |
273e0829 | 226 | Lisp_Object Qsubstitute_in_file_name; |
0bf2eed2 RS |
227 | Lisp_Object Qdirectory_file_name; |
228 | Lisp_Object Qfile_name_directory; | |
229 | Lisp_Object Qfile_name_nondirectory; | |
642ef245 | 230 | Lisp_Object Qunhandled_file_name_directory; |
0bf2eed2 | 231 | Lisp_Object Qfile_name_as_directory; |
32f4334d | 232 | Lisp_Object Qcopy_file; |
a6e6e718 | 233 | Lisp_Object Qmake_directory_internal; |
b272d624 | 234 | Lisp_Object Qmake_directory; |
9d8f3bd9 | 235 | Lisp_Object Qdelete_directory_internal; |
32f4334d RS |
236 | Lisp_Object Qdelete_file; |
237 | Lisp_Object Qrename_file; | |
238 | Lisp_Object Qadd_name_to_file; | |
239 | Lisp_Object Qmake_symbolic_link; | |
240 | Lisp_Object Qfile_exists_p; | |
241 | Lisp_Object Qfile_executable_p; | |
242 | Lisp_Object Qfile_readable_p; | |
32f4334d | 243 | Lisp_Object Qfile_writable_p; |
1f8653eb RS |
244 | Lisp_Object Qfile_symlink_p; |
245 | Lisp_Object Qaccess_file; | |
32f4334d | 246 | Lisp_Object Qfile_directory_p; |
adedc71d | 247 | Lisp_Object Qfile_regular_p; |
32f4334d RS |
248 | Lisp_Object Qfile_accessible_directory_p; |
249 | Lisp_Object Qfile_modes; | |
250 | Lisp_Object Qset_file_modes; | |
819da85b | 251 | Lisp_Object Qset_file_times; |
574c05e2 KK |
252 | Lisp_Object Qfile_selinux_context; |
253 | Lisp_Object Qset_file_selinux_context; | |
32f4334d RS |
254 | Lisp_Object Qfile_newer_than_file_p; |
255 | Lisp_Object Qinsert_file_contents; | |
256 | Lisp_Object Qwrite_region; | |
257 | Lisp_Object Qverify_visited_file_modtime; | |
3ec46acd | 258 | Lisp_Object Qset_visited_file_modtime; |
32f4334d | 259 | |
49307295 | 260 | DEFUN ("find-file-name-handler", Ffind_file_name_handler, Sfind_file_name_handler, 2, 2, 0, |
8c1a1077 PJ |
261 | doc: /* Return FILENAME's handler function for OPERATION, if it has one. |
262 | Otherwise, return nil. | |
263 | A file name is handled if one of the regular expressions in | |
264 | `file-name-handler-alist' matches it. | |
265 | ||
266 | If OPERATION equals `inhibit-file-name-operation', then we ignore | |
267 | any handlers that are members of `inhibit-file-name-handlers', | |
268 | but we still do run any other handlers. This lets handlers | |
269 | use the standard functions without calling themselves recursively. */) | |
5842a27b | 270 | (Lisp_Object filename, Lisp_Object operation) |
32f4334d | 271 | { |
642ef245 | 272 | /* This function must not munge the match data. */ |
204ee271 | 273 | Lisp_Object chain, inhibited_handlers, result; |
8d2ced53 | 274 | int pos = -1; |
642ef245 | 275 | |
204ee271 | 276 | result = Qnil; |
b7826503 | 277 | CHECK_STRING (filename); |
e4432095 | 278 | |
a65970a0 RS |
279 | if (EQ (operation, Vinhibit_file_name_operation)) |
280 | inhibited_handlers = Vinhibit_file_name_handlers; | |
281 | else | |
282 | inhibited_handlers = Qnil; | |
82c2d839 | 283 | |
93c30b5f | 284 | for (chain = Vfile_name_handler_alist; CONSP (chain); |
03699b14 | 285 | chain = XCDR (chain)) |
32f4334d RS |
286 | { |
287 | Lisp_Object elt; | |
03699b14 | 288 | elt = XCAR (chain); |
93c30b5f | 289 | if (CONSP (elt)) |
32f4334d | 290 | { |
f6c9b683 | 291 | Lisp_Object string = XCAR (elt); |
8d2ced53 | 292 | int match_pos; |
f6c9b683 | 293 | Lisp_Object handler = XCDR (elt); |
68780e2a RS |
294 | Lisp_Object operations = Qnil; |
295 | ||
296 | if (SYMBOLP (handler)) | |
297 | operations = Fget (handler, Qoperations); | |
f6c9b683 | 298 | |
8d2ced53 | 299 | if (STRINGP (string) |
f6c9b683 RS |
300 | && (match_pos = fast_string_match (string, filename)) > pos |
301 | && (NILP (operations) || ! NILP (Fmemq (operation, operations)))) | |
a65970a0 | 302 | { |
f6c9b683 | 303 | Lisp_Object tem; |
a65970a0 | 304 | |
03699b14 | 305 | handler = XCDR (elt); |
a65970a0 RS |
306 | tem = Fmemq (handler, inhibited_handlers); |
307 | if (NILP (tem)) | |
8d2ced53 SM |
308 | { |
309 | result = handler; | |
310 | pos = match_pos; | |
311 | } | |
a65970a0 | 312 | } |
32f4334d | 313 | } |
642ef245 JB |
314 | |
315 | QUIT; | |
32f4334d | 316 | } |
8d2ced53 | 317 | return result; |
32f4334d RS |
318 | } |
319 | \f | |
570d7624 | 320 | DEFUN ("file-name-directory", Ffile_name_directory, Sfile_name_directory, |
8c1a1077 PJ |
321 | 1, 1, 0, |
322 | doc: /* Return the directory component in file name FILENAME. | |
323 | Return nil if FILENAME does not include a directory. | |
78379264 | 324 | Otherwise return a directory name. |
7c2fb837 | 325 | Given a Unix syntax file name, returns a string ending in slash. */) |
5842a27b | 326 | (Lisp_Object filename) |
570d7624 | 327 | { |
100c44b7 | 328 | #ifndef DOS_NT |
19290c65 | 329 | register const unsigned char *beg; |
100c44b7 EZ |
330 | #else |
331 | register unsigned char *beg; | |
332 | #endif | |
19290c65 | 333 | register const unsigned char *p; |
0bf2eed2 | 334 | Lisp_Object handler; |
570d7624 | 335 | |
b7826503 | 336 | CHECK_STRING (filename); |
570d7624 | 337 | |
0bf2eed2 RS |
338 | /* If the file name has special constructs in it, |
339 | call the corresponding file handler. */ | |
3b7f6e60 | 340 | handler = Ffind_file_name_handler (filename, Qfile_name_directory); |
0bf2eed2 | 341 | if (!NILP (handler)) |
3b7f6e60 | 342 | return call2 (handler, Qfile_name_directory, filename); |
0bf2eed2 | 343 | |
3b7f6e60 | 344 | filename = FILE_SYSTEM_CASE (filename); |
199607e4 | 345 | #ifdef DOS_NT |
0f3f018c | 346 | beg = (unsigned char *) alloca (SBYTES (filename) + 1); |
72af86bd | 347 | memcpy (beg, SDATA (filename), SBYTES (filename) + 1); |
0f3f018c CY |
348 | #else |
349 | beg = SDATA (filename); | |
199607e4 | 350 | #endif |
d5db4077 | 351 | p = beg + SBYTES (filename); |
570d7624 | 352 | |
199607e4 | 353 | while (p != beg && !IS_DIRECTORY_SEP (p[-1]) |
199607e4 | 354 | #ifdef DOS_NT |
ba14e174 RS |
355 | /* only recognise drive specifier at the beginning */ |
356 | && !(p[-1] == ':' | |
357 | /* handle the "/:d:foo" and "/:foo" cases correctly */ | |
358 | && ((p == beg + 2 && !IS_DIRECTORY_SEP (*beg)) | |
359 | || (p == beg + 4 && IS_DIRECTORY_SEP (*beg)))) | |
199607e4 | 360 | #endif |
570d7624 JB |
361 | ) p--; |
362 | ||
363 | if (p == beg) | |
364 | return Qnil; | |
5e570b75 | 365 | #ifdef DOS_NT |
4c3c22f3 | 366 | /* Expansion of "c:" to drive and default directory. */ |
ba14e174 | 367 | if (p[-1] == ':') |
4c3c22f3 | 368 | { |
4c3c22f3 | 369 | /* MAXPATHLEN+1 is guaranteed to be enough space for getdefdir. */ |
199607e4 | 370 | unsigned char *res = alloca (MAXPATHLEN + 1); |
ba14e174 RS |
371 | unsigned char *r = res; |
372 | ||
373 | if (p == beg + 4 && IS_DIRECTORY_SEP (*beg) && beg[1] == ':') | |
374 | { | |
375 | strncpy (res, beg, 2); | |
376 | beg += 2; | |
377 | r += 2; | |
378 | } | |
379 | ||
380 | if (getdefdir (toupper (*beg) - 'A' + 1, r)) | |
4c3c22f3 | 381 | { |
199607e4 | 382 | if (!IS_DIRECTORY_SEP (res[strlen (res) - 1])) |
4c3c22f3 RS |
383 | strcat (res, "/"); |
384 | beg = res; | |
385 | p = beg + strlen (beg); | |
386 | } | |
387 | } | |
087fc47a | 388 | dostounix_filename (beg); |
5e570b75 | 389 | #endif /* DOS_NT */ |
60d67b83 | 390 | |
d7231f93 | 391 | return make_specified_string (beg, -1, p - beg, STRING_MULTIBYTE (filename)); |
570d7624 JB |
392 | } |
393 | ||
60d67b83 RS |
394 | DEFUN ("file-name-nondirectory", Ffile_name_nondirectory, |
395 | Sfile_name_nondirectory, 1, 1, 0, | |
8c1a1077 PJ |
396 | doc: /* Return file name FILENAME sans its directory. |
397 | For example, in a Unix-syntax file name, | |
398 | this is everything after the last slash, | |
399 | or the entire name if it contains no slash. */) | |
5842a27b | 400 | (Lisp_Object filename) |
570d7624 | 401 | { |
19290c65 | 402 | register const unsigned char *beg, *p, *end; |
0bf2eed2 | 403 | Lisp_Object handler; |
570d7624 | 404 | |
b7826503 | 405 | CHECK_STRING (filename); |
570d7624 | 406 | |
0bf2eed2 RS |
407 | /* If the file name has special constructs in it, |
408 | call the corresponding file handler. */ | |
3b7f6e60 | 409 | handler = Ffind_file_name_handler (filename, Qfile_name_nondirectory); |
0bf2eed2 | 410 | if (!NILP (handler)) |
3b7f6e60 | 411 | return call2 (handler, Qfile_name_nondirectory, filename); |
0bf2eed2 | 412 | |
d5db4077 KR |
413 | beg = SDATA (filename); |
414 | end = p = beg + SBYTES (filename); | |
570d7624 | 415 | |
199607e4 | 416 | while (p != beg && !IS_DIRECTORY_SEP (p[-1]) |
199607e4 RS |
417 | #ifdef DOS_NT |
418 | /* only recognise drive specifier at beginning */ | |
ba14e174 RS |
419 | && !(p[-1] == ':' |
420 | /* handle the "/:d:foo" case correctly */ | |
421 | && (p == beg + 2 || (p == beg + 4 && IS_DIRECTORY_SEP (*beg)))) | |
199607e4 | 422 | #endif |
60d67b83 RS |
423 | ) |
424 | p--; | |
570d7624 | 425 | |
d7231f93 | 426 | return make_specified_string (p, -1, end - p, STRING_MULTIBYTE (filename)); |
570d7624 | 427 | } |
642ef245 | 428 | |
60d67b83 RS |
429 | DEFUN ("unhandled-file-name-directory", Funhandled_file_name_directory, |
430 | Sunhandled_file_name_directory, 1, 1, 0, | |
8c1a1077 PJ |
431 | doc: /* Return a directly usable directory name somehow associated with FILENAME. |
432 | A `directly usable' directory name is one that may be used without the | |
433 | intervention of any file handler. | |
434 | If FILENAME is a directly usable file itself, return | |
435 | \(file-name-directory FILENAME). | |
ca319910 SM |
436 | If FILENAME refers to a file which is not accessible from a local process, |
437 | then this should return nil. | |
8c1a1077 PJ |
438 | The `call-process' and `start-process' functions use this function to |
439 | get a current directory to run processes in. */) | |
5842a27b | 440 | (Lisp_Object filename) |
642ef245 JB |
441 | { |
442 | Lisp_Object handler; | |
443 | ||
444 | /* If the file name has special constructs in it, | |
445 | call the corresponding file handler. */ | |
49307295 | 446 | handler = Ffind_file_name_handler (filename, Qunhandled_file_name_directory); |
642ef245 JB |
447 | if (!NILP (handler)) |
448 | return call2 (handler, Qunhandled_file_name_directory, filename); | |
449 | ||
450 | return Ffile_name_directory (filename); | |
451 | } | |
452 | ||
570d7624 JB |
453 | \f |
454 | char * | |
971de7fb | 455 | file_name_as_directory (char *out, char *in) |
570d7624 JB |
456 | { |
457 | int size = strlen (in) - 1; | |
458 | ||
459 | strcpy (out, in); | |
460 | ||
8aa3a244 RS |
461 | if (size < 0) |
462 | { | |
154a307d KH |
463 | out[0] = '.'; |
464 | out[1] = '/'; | |
465 | out[2] = 0; | |
8aa3a244 RS |
466 | return out; |
467 | } | |
468 | ||
570d7624 | 469 | /* For Unix syntax, Append a slash if necessary */ |
199607e4 | 470 | if (!IS_DIRECTORY_SEP (out[size])) |
5e570b75 | 471 | { |
087fc47a | 472 | out[size + 1] = DIRECTORY_SEP; |
5e570b75 RS |
473 | out[size + 2] = '\0'; |
474 | } | |
199607e4 | 475 | #ifdef DOS_NT |
087fc47a | 476 | dostounix_filename (out); |
199607e4 | 477 | #endif |
570d7624 JB |
478 | return out; |
479 | } | |
480 | ||
481 | DEFUN ("file-name-as-directory", Ffile_name_as_directory, | |
482 | Sfile_name_as_directory, 1, 1, 0, | |
0dac4f85 | 483 | doc: /* Return a string representing the file name FILE interpreted as a directory. |
8c1a1077 PJ |
484 | This operation exists because a directory is also a file, but its name as |
485 | a directory is different from its name as a file. | |
486 | The result can be used as the value of `default-directory' | |
487 | or passed as second argument to `expand-file-name'. | |
7c2fb837 | 488 | For a Unix-syntax file name, just appends a slash. */) |
5842a27b | 489 | (Lisp_Object file) |
570d7624 JB |
490 | { |
491 | char *buf; | |
0bf2eed2 | 492 | Lisp_Object handler; |
570d7624 | 493 | |
b7826503 | 494 | CHECK_STRING (file); |
265a9e55 | 495 | if (NILP (file)) |
570d7624 | 496 | return Qnil; |
0bf2eed2 RS |
497 | |
498 | /* If the file name has special constructs in it, | |
499 | call the corresponding file handler. */ | |
49307295 | 500 | handler = Ffind_file_name_handler (file, Qfile_name_as_directory); |
0bf2eed2 RS |
501 | if (!NILP (handler)) |
502 | return call2 (handler, Qfile_name_as_directory, file); | |
503 | ||
d5db4077 | 504 | buf = (char *) alloca (SBYTES (file) + 10); |
d7231f93 KH |
505 | file_name_as_directory (buf, SDATA (file)); |
506 | return make_specified_string (buf, -1, strlen (buf), | |
507 | STRING_MULTIBYTE (file)); | |
570d7624 JB |
508 | } |
509 | \f | |
510 | /* | |
511 | * Convert from directory name to filename. | |
199607e4 | 512 | * On UNIX, it's simple: just make sure there isn't a terminating / |
570d7624 JB |
513 | |
514 | * Value is nonzero if the string output is different from the input. | |
515 | */ | |
516 | ||
dfcf069d | 517 | int |
971de7fb | 518 | directory_file_name (char *src, char *dst) |
570d7624 JB |
519 | { |
520 | long slen; | |
570d7624 JB |
521 | |
522 | slen = strlen (src); | |
7c2fb837 | 523 | |
570d7624 JB |
524 | /* Process as Unix format: just remove any final slash. |
525 | But leave "/" unchanged; do not change it to "". */ | |
526 | strcpy (dst, src); | |
199607e4 | 527 | if (slen > 1 |
5e570b75 | 528 | && IS_DIRECTORY_SEP (dst[slen - 1]) |
4592782e RS |
529 | #ifdef DOS_NT |
530 | && !IS_ANY_SEP (dst[slen - 2]) | |
531 | #endif | |
532 | ) | |
570d7624 | 533 | dst[slen - 1] = 0; |
199607e4 | 534 | #ifdef DOS_NT |
087fc47a | 535 | dostounix_filename (dst); |
125feee8 | 536 | #endif |
570d7624 JB |
537 | return 1; |
538 | } | |
539 | ||
540 | DEFUN ("directory-file-name", Fdirectory_file_name, Sdirectory_file_name, | |
8c1a1077 PJ |
541 | 1, 1, 0, |
542 | doc: /* Returns the file name of the directory named DIRECTORY. | |
543 | This is the name of the file that holds the data for the directory DIRECTORY. | |
544 | This operation exists because a directory is also a file, but its name as | |
545 | a directory is different from its name as a file. | |
7c2fb837 | 546 | In Unix-syntax, this function just removes the final slash. */) |
5842a27b | 547 | (Lisp_Object directory) |
570d7624 JB |
548 | { |
549 | char *buf; | |
0bf2eed2 | 550 | Lisp_Object handler; |
570d7624 | 551 | |
b7826503 | 552 | CHECK_STRING (directory); |
570d7624 | 553 | |
265a9e55 | 554 | if (NILP (directory)) |
570d7624 | 555 | return Qnil; |
0bf2eed2 RS |
556 | |
557 | /* If the file name has special constructs in it, | |
558 | call the corresponding file handler. */ | |
49307295 | 559 | handler = Ffind_file_name_handler (directory, Qdirectory_file_name); |
0bf2eed2 RS |
560 | if (!NILP (handler)) |
561 | return call2 (handler, Qdirectory_file_name, directory); | |
562 | ||
d5db4077 | 563 | buf = (char *) alloca (SBYTES (directory) + 20); |
d5db4077 | 564 | directory_file_name (SDATA (directory), buf); |
d7231f93 KH |
565 | return make_specified_string (buf, -1, strlen (buf), |
566 | STRING_MULTIBYTE (directory)); | |
570d7624 JB |
567 | } |
568 | ||
91433552 | 569 | static const char make_temp_name_tbl[64] = |
3ce839e4 RS |
570 | { |
571 | 'A','B','C','D','E','F','G','H', | |
572 | 'I','J','K','L','M','N','O','P', | |
573 | 'Q','R','S','T','U','V','W','X', | |
574 | 'Y','Z','a','b','c','d','e','f', | |
575 | 'g','h','i','j','k','l','m','n', | |
576 | 'o','p','q','r','s','t','u','v', | |
577 | 'w','x','y','z','0','1','2','3', | |
578 | '4','5','6','7','8','9','-','_' | |
579 | }; | |
cb613bb8 | 580 | |
3ce839e4 RS |
581 | static unsigned make_temp_name_count, make_temp_name_count_initialized_p; |
582 | ||
cb613bb8 | 583 | /* Value is a temporary file name starting with PREFIX, a string. |
efdc16c9 | 584 | |
cb613bb8 GM |
585 | The Emacs process number forms part of the result, so there is |
586 | no danger of generating a name being used by another process. | |
587 | In addition, this function makes an attempt to choose a name | |
588 | which has no existing file. To make this work, PREFIX should be | |
589 | an absolute file name. | |
efdc16c9 | 590 | |
cb613bb8 GM |
591 | BASE64_P non-zero means add the pid as 3 characters in base64 |
592 | encoding. In this case, 6 characters will be added to PREFIX to | |
593 | form the file name. Otherwise, if Emacs is running on a system | |
594 | with long file names, add the pid as a decimal number. | |
595 | ||
596 | This function signals an error if no unique file name could be | |
597 | generated. */ | |
598 | ||
599 | Lisp_Object | |
971de7fb | 600 | make_temp_name (Lisp_Object prefix, int base64_p) |
570d7624 JB |
601 | { |
602 | Lisp_Object val; | |
0cedd530 | 603 | int len, clen; |
3ce839e4 RS |
604 | int pid; |
605 | unsigned char *p, *data; | |
606 | char pidbuf[20]; | |
607 | int pidlen; | |
efdc16c9 | 608 | |
b7826503 | 609 | CHECK_STRING (prefix); |
3ce839e4 RS |
610 | |
611 | /* VAL is created by adding 6 characters to PREFIX. The first | |
612 | three are the PID of this process, in base 64, and the second | |
613 | three are incremented if the file already exists. This ensures | |
614 | 262144 unique file names per PID per PREFIX. */ | |
615 | ||
616 | pid = (int) getpid (); | |
617 | ||
cb613bb8 GM |
618 | if (base64_p) |
619 | { | |
620 | pidbuf[0] = make_temp_name_tbl[pid & 63], pid >>= 6; | |
621 | pidbuf[1] = make_temp_name_tbl[pid & 63], pid >>= 6; | |
622 | pidbuf[2] = make_temp_name_tbl[pid & 63], pid >>= 6; | |
623 | pidlen = 3; | |
624 | } | |
625 | else | |
626 | { | |
3ce839e4 | 627 | #ifdef HAVE_LONG_FILE_NAMES |
cb613bb8 GM |
628 | sprintf (pidbuf, "%d", pid); |
629 | pidlen = strlen (pidbuf); | |
3a3bfb18 | 630 | #else |
cb613bb8 GM |
631 | pidbuf[0] = make_temp_name_tbl[pid & 63], pid >>= 6; |
632 | pidbuf[1] = make_temp_name_tbl[pid & 63], pid >>= 6; | |
633 | pidbuf[2] = make_temp_name_tbl[pid & 63], pid >>= 6; | |
634 | pidlen = 3; | |
3ce839e4 | 635 | #endif |
cb613bb8 | 636 | } |
efdc16c9 | 637 | |
0cedd530 SM |
638 | len = SBYTES (prefix); clen = SCHARS (prefix); |
639 | val = make_uninit_multibyte_string (clen + 3 + pidlen, len + 3 + pidlen); | |
640 | if (!STRING_MULTIBYTE (prefix)) | |
641 | STRING_SET_UNIBYTE (val); | |
d5db4077 | 642 | data = SDATA (val); |
72af86bd | 643 | memcpy (data, SDATA (prefix), len); |
3ce839e4 RS |
644 | p = data + len; |
645 | ||
72af86bd | 646 | memcpy (p, pidbuf, pidlen); |
3ce839e4 RS |
647 | p += pidlen; |
648 | ||
649 | /* Here we try to minimize useless stat'ing when this function is | |
650 | invoked many times successively with the same PREFIX. We achieve | |
651 | this by initializing count to a random value, and incrementing it | |
f6a492a9 RS |
652 | afterwards. |
653 | ||
654 | We don't want make-temp-name to be called while dumping, | |
655 | because then make_temp_name_count_initialized_p would get set | |
656 | and then make_temp_name_count would not be set when Emacs starts. */ | |
657 | ||
3ce839e4 RS |
658 | if (!make_temp_name_count_initialized_p) |
659 | { | |
660 | make_temp_name_count = (unsigned) time (NULL); | |
661 | make_temp_name_count_initialized_p = 1; | |
662 | } | |
663 | ||
664 | while (1) | |
665 | { | |
666 | struct stat ignored; | |
8a7777fc | 667 | unsigned num = make_temp_name_count; |
3ce839e4 RS |
668 | |
669 | p[0] = make_temp_name_tbl[num & 63], num >>= 6; | |
670 | p[1] = make_temp_name_tbl[num & 63], num >>= 6; | |
671 | p[2] = make_temp_name_tbl[num & 63], num >>= 6; | |
672 | ||
8a7777fc RS |
673 | /* Poor man's congruential RN generator. Replace with |
674 | ++make_temp_name_count for debugging. */ | |
675 | make_temp_name_count += 25229; | |
676 | make_temp_name_count %= 225307; | |
677 | ||
3ce839e4 RS |
678 | if (stat (data, &ignored) < 0) |
679 | { | |
680 | /* We want to return only if errno is ENOENT. */ | |
681 | if (errno == ENOENT) | |
682 | return val; | |
683 | else | |
684 | /* The error here is dubious, but there is little else we | |
685 | can do. The alternatives are to return nil, which is | |
686 | as bad as (and in many cases worse than) throwing the | |
687 | error, or to ignore the error, which will likely result | |
8a7777fc | 688 | in looping through 225307 stat's, which is not only |
410ed5c3 PE |
689 | dog-slow, but also useless since eventually nil would |
690 | have to be returned anyway. */ | |
9869bb0b | 691 | report_file_error ("Cannot create temporary name for prefix", |
3ce839e4 RS |
692 | Fcons (prefix, Qnil)); |
693 | /* not reached */ | |
694 | } | |
695 | } | |
570d7624 | 696 | } |
3ce839e4 | 697 | |
cb613bb8 GM |
698 | |
699 | DEFUN ("make-temp-name", Fmake_temp_name, Smake_temp_name, 1, 1, 0, | |
8c1a1077 PJ |
700 | doc: /* Generate temporary file name (string) starting with PREFIX (a string). |
701 | The Emacs process number forms part of the result, | |
702 | so there is no danger of generating a name being used by another process. | |
703 | ||
704 | In addition, this function makes an attempt to choose a name | |
705 | which has no existing file. To make this work, | |
706 | PREFIX should be an absolute file name. | |
707 | ||
708 | There is a race condition between calling `make-temp-name' and creating the | |
709 | file which opens all kinds of security holes. For that reason, you should | |
f9e6f049 RS |
710 | probably use `make-temp-file' instead, except in three circumstances: |
711 | ||
712 | * If you are creating the file in the user's home directory. | |
713 | * If you are creating a directory rather than an ordinary file. | |
714 | * If you are taking special precautions as `make-temp-file' does. */) | |
5842a27b | 715 | (Lisp_Object prefix) |
cb613bb8 GM |
716 | { |
717 | return make_temp_name (prefix, 0); | |
718 | } | |
719 | ||
720 | ||
570d7624 JB |
721 | \f |
722 | DEFUN ("expand-file-name", Fexpand_file_name, Sexpand_file_name, 1, 2, 0, | |
8c1a1077 PJ |
723 | doc: /* Convert filename NAME to absolute, and canonicalize it. |
724 | Second arg DEFAULT-DIRECTORY is directory to start with if NAME is relative | |
78379264 | 725 | \(does not start with slash or tilde); if DEFAULT-DIRECTORY is nil or missing, |
a4e03fe5 | 726 | the current buffer's value of `default-directory' is used. |
1b2a627f EZ |
727 | NAME should be a string that is a valid file name for the underlying |
728 | filesystem. | |
8c1a1077 PJ |
729 | File name components that are `.' are removed, and |
730 | so are file name components followed by `..', along with the `..' itself; | |
731 | note that these simplifications are done without checking the resulting | |
732 | file names in the file system. | |
15579471 EZ |
733 | Multiple consecutive slashes are collapsed into a single slash, |
734 | except at the beginning of the file name when they are significant (e.g., | |
735 | UNC file names on MS-Windows.) | |
8c1a1077 PJ |
736 | An initial `~/' expands to your home directory. |
737 | An initial `~USER/' expands to USER's home directory. | |
07114296 CY |
738 | See also the function `substitute-in-file-name'. |
739 | ||
740 | For technical reasons, this function can return correct but | |
741 | non-intuitive results for the root directory; for instance, | |
742 | \(expand-file-name ".." "/") returns "/..". For this reason, use | |
15579471 | 743 | \(directory-file-name (file-name-directory dirname)) to traverse a |
07114296 | 744 | filesystem tree, not (expand-file-name ".." dirname). */) |
5842a27b | 745 | (Lisp_Object name, Lisp_Object default_directory) |
570d7624 | 746 | { |
5b5a2ea1 SM |
747 | /* These point to SDATA and need to be careful with string-relocation |
748 | during GC (via DECODE_FILE). */ | |
749 | unsigned char *nm, *newdir; | |
750 | /* This should only point to alloca'd data. */ | |
751 | unsigned char *target; | |
199607e4 | 752 | |
570d7624 | 753 | int tlen; |
570d7624 | 754 | struct passwd *pw; |
5e570b75 | 755 | #ifdef DOS_NT |
199607e4 | 756 | int drive = 0; |
9a1dc3be | 757 | int collapse_newdir = 1; |
f0f95d31 | 758 | int is_escaped = 0; |
5e570b75 | 759 | #endif /* DOS_NT */ |
199607e4 | 760 | int length; |
beb402de | 761 | Lisp_Object handler, result; |
2b046a72 | 762 | int multibyte; |
9c06a1f3 | 763 | Lisp_Object hdir; |
199607e4 | 764 | |
b7826503 | 765 | CHECK_STRING (name); |
570d7624 | 766 | |
0bf2eed2 RS |
767 | /* If the file name has special constructs in it, |
768 | call the corresponding file handler. */ | |
49307295 | 769 | handler = Ffind_file_name_handler (name, Qexpand_file_name); |
0bf2eed2 | 770 | if (!NILP (handler)) |
3b7f6e60 | 771 | return call3 (handler, Qexpand_file_name, name, default_directory); |
58fc9587 | 772 | |
3b7f6e60 EN |
773 | /* Use the buffer's default-directory if DEFAULT_DIRECTORY is omitted. */ |
774 | if (NILP (default_directory)) | |
775 | default_directory = current_buffer->directory; | |
82330e7f | 776 | if (! STRINGP (default_directory)) |
dd693537 EZ |
777 | { |
778 | #ifdef DOS_NT | |
779 | /* "/" is not considered a root directory on DOS_NT, so using "/" | |
780 | here causes an infinite recursion in, e.g., the following: | |
781 | ||
782 | (let (default-directory) | |
783 | (expand-file-name "a")) | |
784 | ||
785 | To avoid this, we set default_directory to the root of the | |
786 | current drive. */ | |
dd693537 EZ |
787 | default_directory = build_string (emacs_root_dir ()); |
788 | #else | |
789 | default_directory = build_string ("/"); | |
790 | #endif | |
791 | } | |
58fc9587 | 792 | |
3b7f6e60 | 793 | if (!NILP (default_directory)) |
273e0829 | 794 | { |
3b7f6e60 | 795 | handler = Ffind_file_name_handler (default_directory, Qexpand_file_name); |
273e0829 | 796 | if (!NILP (handler)) |
3b7f6e60 | 797 | return call3 (handler, Qexpand_file_name, name, default_directory); |
273e0829 | 798 | } |
0bf2eed2 | 799 | |
5b5a2ea1 SM |
800 | { |
801 | unsigned char *o = SDATA (default_directory); | |
802 | ||
803 | /* Make sure DEFAULT_DIRECTORY is properly expanded. | |
804 | It would be better to do this down below where we actually use | |
805 | default_directory. Unfortunately, calling Fexpand_file_name recursively | |
806 | could invoke GC, and the strings might be relocated. This would | |
807 | be annoying because we have pointers into strings lying around | |
808 | that would need adjusting, and people would add new pointers to | |
809 | the code and forget to adjust them, resulting in intermittent bugs. | |
810 | Putting this call here avoids all that crud. | |
811 | ||
812 | The EQ test avoids infinite recursion. */ | |
813 | if (! NILP (default_directory) && !EQ (default_directory, name) | |
814 | /* Save time in some common cases - as long as default_directory | |
815 | is not relative, it can be canonicalized with name below (if it | |
816 | is needed at all) without requiring it to be expanded now. */ | |
01937013 | 817 | #ifdef DOS_NT |
5b5a2ea1 SM |
818 | /* Detect MSDOS file names with drive specifiers. */ |
819 | && ! (IS_DRIVE (o[0]) && IS_DEVICE_SEP (o[1]) | |
820 | && IS_DIRECTORY_SEP (o[2])) | |
199607e4 | 821 | #ifdef WINDOWSNT |
5b5a2ea1 SM |
822 | /* Detect Windows file names in UNC format. */ |
823 | && ! (IS_DIRECTORY_SEP (o[0]) && IS_DIRECTORY_SEP (o[1])) | |
01937013 | 824 | #endif |
199607e4 RS |
825 | #else /* not DOS_NT */ |
826 | /* Detect Unix absolute file names (/... alone is not absolute on | |
827 | DOS or Windows). */ | |
5b5a2ea1 | 828 | && ! (IS_DIRECTORY_SEP (o[0])) |
199607e4 | 829 | #endif /* not DOS_NT */ |
5b5a2ea1 SM |
830 | ) |
831 | { | |
832 | struct gcpro gcpro1; | |
f14b1c68 | 833 | |
5b5a2ea1 SM |
834 | GCPRO1 (name); |
835 | default_directory = Fexpand_file_name (default_directory, Qnil); | |
836 | UNGCPRO; | |
837 | } | |
838 | } | |
4c3c22f3 | 839 | name = FILE_SYSTEM_CASE (name); |
2b046a72 | 840 | multibyte = STRING_MULTIBYTE (name); |
6d060996 KH |
841 | if (multibyte != STRING_MULTIBYTE (default_directory)) |
842 | { | |
843 | if (multibyte) | |
844 | default_directory = string_to_multibyte (default_directory); | |
845 | else | |
846 | { | |
847 | name = string_to_multibyte (name); | |
848 | multibyte = 1; | |
849 | } | |
850 | } | |
851 | ||
565f0b98 | 852 | /* Make a local copy of nm[] to protect it from GC in DECODE_FILE below. */ |
0f3f018c | 853 | nm = (unsigned char *) alloca (SBYTES (name) + 1); |
72af86bd | 854 | memcpy (nm, SDATA (name), SBYTES (name) + 1); |
199607e4 | 855 | |
565f0b98 | 856 | #ifdef DOS_NT |
f0f95d31 RS |
857 | /* Note if special escape prefix is present, but remove for now. */ |
858 | if (nm[0] == '/' && nm[1] == ':') | |
859 | { | |
860 | is_escaped = 1; | |
861 | nm += 2; | |
862 | } | |
863 | ||
199607e4 | 864 | /* Find and remove drive specifier if present; this makes nm absolute |
f0f95d31 RS |
865 | even if the rest of the name appears to be relative. Only look for |
866 | drive specifier at the beginning. */ | |
867 | if (IS_DRIVE (nm[0]) && IS_DEVICE_SEP (nm[1])) | |
868 | { | |
869 | drive = nm[0]; | |
870 | nm += 2; | |
871 | } | |
bb1ff1f4 GV |
872 | |
873 | #ifdef WINDOWSNT | |
874 | /* If we see "c://somedir", we want to strip the first slash after the | |
875 | colon when stripping the drive letter. Otherwise, this expands to | |
876 | "//somedir". */ | |
877 | if (drive && IS_DIRECTORY_SEP (nm[0]) && IS_DIRECTORY_SEP (nm[1])) | |
878 | nm++; | |
4c3c22f3 | 879 | |
199607e4 RS |
880 | /* Discard any previous drive specifier if nm is now in UNC format. */ |
881 | if (IS_DIRECTORY_SEP (nm[0]) && IS_DIRECTORY_SEP (nm[1])) | |
882 | { | |
883 | drive = 0; | |
884 | } | |
5b5a2ea1 SM |
885 | #endif /* WINDOWSNT */ |
886 | #endif /* DOS_NT */ | |
199607e4 | 887 | |
214378ec GM |
888 | /* If nm is absolute, look for `/./' or `/../' or `//''sequences; if |
889 | none are found, we can probably return right away. We will avoid | |
890 | allocating a new string if name is already fully expanded. */ | |
570d7624 | 891 | if ( |
5e570b75 | 892 | IS_DIRECTORY_SEP (nm[0]) |
199607e4 | 893 | #ifdef MSDOS |
f0f95d31 | 894 | && drive && !is_escaped |
199607e4 RS |
895 | #endif |
896 | #ifdef WINDOWSNT | |
f0f95d31 | 897 | && (drive || IS_DIRECTORY_SEP (nm[1])) && !is_escaped |
199607e4 | 898 | #endif |
570d7624 JB |
899 | ) |
900 | { | |
f14b1c68 JB |
901 | /* If it turns out that the filename we want to return is just a |
902 | suffix of FILENAME, we don't need to go through and edit | |
903 | things; we just need to construct a new string using data | |
904 | starting at the middle of FILENAME. If we set lose to a | |
905 | non-zero value, that means we've discovered that we can't do | |
906 | that cool trick. */ | |
907 | int lose = 0; | |
5b5a2ea1 | 908 | unsigned char *p = nm; |
f14b1c68 | 909 | |
570d7624 JB |
910 | while (*p) |
911 | { | |
199607e4 | 912 | /* Since we know the name is absolute, we can assume that each |
c77d647e JB |
913 | element starts with a "/". */ |
914 | ||
c77d647e | 915 | /* "." and ".." are hairy. */ |
5e570b75 | 916 | if (IS_DIRECTORY_SEP (p[0]) |
c77d647e | 917 | && p[1] == '.' |
5e570b75 | 918 | && (IS_DIRECTORY_SEP (p[2]) |
c77d647e | 919 | || p[2] == 0 |
5e570b75 | 920 | || (p[2] == '.' && (IS_DIRECTORY_SEP (p[3]) |
c77d647e | 921 | || p[3] == 0)))) |
570d7624 | 922 | lose = 1; |
214378ec GM |
923 | /* We want to replace multiple `/' in a row with a single |
924 | slash. */ | |
925 | else if (p > nm | |
926 | && IS_DIRECTORY_SEP (p[0]) | |
927 | && IS_DIRECTORY_SEP (p[1])) | |
928 | lose = 1; | |
570d7624 JB |
929 | p++; |
930 | } | |
931 | if (!lose) | |
932 | { | |
199607e4 | 933 | #ifdef DOS_NT |
087fc47a JB |
934 | /* Make sure directories are all separated with /, but |
935 | avoid allocation of a new string when not required. */ | |
936 | dostounix_filename (nm); | |
199607e4 RS |
937 | #ifdef WINDOWSNT |
938 | if (IS_DIRECTORY_SEP (nm[1])) | |
939 | { | |
d5db4077 | 940 | if (strcmp (nm, SDATA (name)) != 0) |
2b046a72 | 941 | name = make_specified_string (nm, -1, strlen (nm), multibyte); |
199607e4 RS |
942 | } |
943 | else | |
944 | #endif | |
945 | /* drive must be set, so this is okay */ | |
d5db4077 | 946 | if (strcmp (nm - 2, SDATA (name)) != 0) |
199607e4 | 947 | { |
3f817c73 KH |
948 | char temp[] = " :"; |
949 | ||
2b046a72 | 950 | name = make_specified_string (nm, -1, p - nm, multibyte); |
3f817c73 KH |
951 | temp[0] = DRIVE_LETTER (drive); |
952 | name = concat2 (build_string (temp), name); | |
199607e4 RS |
953 | } |
954 | return name; | |
955 | #else /* not DOS_NT */ | |
565f0b98 | 956 | if (strcmp (nm, SDATA (name)) == 0) |
570d7624 | 957 | return name; |
2b046a72 | 958 | return make_specified_string (nm, -1, strlen (nm), multibyte); |
5e570b75 | 959 | #endif /* not DOS_NT */ |
570d7624 JB |
960 | } |
961 | } | |
962 | ||
199607e4 RS |
963 | /* At this point, nm might or might not be an absolute file name. We |
964 | need to expand ~ or ~user if present, otherwise prefix nm with | |
965 | default_directory if nm is not absolute, and finally collapse /./ | |
966 | and /foo/../ sequences. | |
967 | ||
968 | We set newdir to be the appropriate prefix if one is needed: | |
969 | - the relevant user directory if nm starts with ~ or ~user | |
970 | - the specified drive's working dir (DOS/NT only) if nm does not | |
971 | start with / | |
972 | - the value of default_directory. | |
973 | ||
974 | Note that these prefixes are not guaranteed to be absolute (except | |
975 | for the working dir of a drive). Therefore, to ensure we always | |
976 | return an absolute name, if the final prefix is not absolute we | |
977 | append it to the current working directory. */ | |
570d7624 JB |
978 | |
979 | newdir = 0; | |
980 | ||
981 | if (nm[0] == '~') /* prefix ~ */ | |
c77d647e | 982 | { |
5e570b75 | 983 | if (IS_DIRECTORY_SEP (nm[1]) |
c77d647e JB |
984 | || nm[1] == 0) /* ~ by itself */ |
985 | { | |
6d557778 EZ |
986 | Lisp_Object tem; |
987 | ||
c77d647e JB |
988 | if (!(newdir = (unsigned char *) egetenv ("HOME"))) |
989 | newdir = (unsigned char *) ""; | |
199607e4 | 990 | nm++; |
6d557778 EZ |
991 | /* egetenv may return a unibyte string, which will bite us since |
992 | we expect the directory to be multibyte. */ | |
9c06a1f3 EZ |
993 | tem = build_string (newdir); |
994 | if (!STRING_MULTIBYTE (tem)) | |
995 | { | |
996 | hdir = DECODE_FILE (tem); | |
997 | newdir = SDATA (hdir); | |
998 | } | |
5e570b75 | 999 | #ifdef DOS_NT |
9a1dc3be | 1000 | collapse_newdir = 0; |
4c3c22f3 | 1001 | #endif |
c77d647e JB |
1002 | } |
1003 | else /* ~user/filename */ | |
1004 | { | |
5b5a2ea1 | 1005 | unsigned char *o, *p; |
7c2fb837 | 1006 | for (p = nm; *p && (!IS_DIRECTORY_SEP (*p)); p++); |
5b5a2ea1 | 1007 | o = alloca (p - nm + 1); |
72af86bd | 1008 | memcpy (o, nm, p - nm); |
c77d647e JB |
1009 | o [p - nm] = 0; |
1010 | ||
67c08d6c | 1011 | BLOCK_INPUT; |
c77d647e | 1012 | pw = (struct passwd *) getpwnam (o + 1); |
67c08d6c | 1013 | UNBLOCK_INPUT; |
c77d647e JB |
1014 | if (pw) |
1015 | { | |
1016 | newdir = (unsigned char *) pw -> pw_dir; | |
c77d647e | 1017 | nm = p; |
199607e4 | 1018 | #ifdef DOS_NT |
9a1dc3be | 1019 | collapse_newdir = 0; |
199607e4 | 1020 | #endif |
c77d647e | 1021 | } |
e5d77022 | 1022 | |
c77d647e JB |
1023 | /* If we don't find a user of that name, leave the name |
1024 | unchanged; don't move nm forward to p. */ | |
1025 | } | |
1026 | } | |
570d7624 | 1027 | |
5e570b75 | 1028 | #ifdef DOS_NT |
199607e4 RS |
1029 | /* On DOS and Windows, nm is absolute if a drive name was specified; |
1030 | use the drive's current directory as the prefix if needed. */ | |
1031 | if (!newdir && drive) | |
1032 | { | |
1033 | /* Get default directory if needed to make nm absolute. */ | |
1034 | if (!IS_DIRECTORY_SEP (nm[0])) | |
1035 | { | |
1036 | newdir = alloca (MAXPATHLEN + 1); | |
1037 | if (!getdefdir (toupper (drive) - 'A' + 1, newdir)) | |
1038 | newdir = NULL; | |
1039 | } | |
1040 | if (!newdir) | |
1041 | { | |
1042 | /* Either nm starts with /, or drive isn't mounted. */ | |
1043 | newdir = alloca (4); | |
f94988a7 | 1044 | newdir[0] = DRIVE_LETTER (drive); |
199607e4 RS |
1045 | newdir[1] = ':'; |
1046 | newdir[2] = '/'; | |
1047 | newdir[3] = 0; | |
1048 | } | |
1049 | } | |
5e570b75 | 1050 | #endif /* DOS_NT */ |
199607e4 RS |
1051 | |
1052 | /* Finally, if no prefix has been specified and nm is not absolute, | |
1053 | then it must be expanded relative to default_directory. */ | |
1054 | ||
34097368 | 1055 | if (1 |
199607e4 RS |
1056 | #ifndef DOS_NT |
1057 | /* /... alone is not absolute on DOS and Windows. */ | |
34097368 | 1058 | && !IS_DIRECTORY_SEP (nm[0]) |
199607e4 RS |
1059 | #endif |
1060 | #ifdef WINDOWSNT | |
34097368 | 1061 | && !(IS_DIRECTORY_SEP (nm[0]) && IS_DIRECTORY_SEP (nm[1])) |
199607e4 | 1062 | #endif |
570d7624 JB |
1063 | && !newdir) |
1064 | { | |
d5db4077 | 1065 | newdir = SDATA (default_directory); |
f0f95d31 RS |
1066 | #ifdef DOS_NT |
1067 | /* Note if special escape prefix is present, but remove for now. */ | |
1068 | if (newdir[0] == '/' && newdir[1] == ':') | |
1069 | { | |
1070 | is_escaped = 1; | |
1071 | newdir += 2; | |
1072 | } | |
1073 | #endif | |
570d7624 JB |
1074 | } |
1075 | ||
5e570b75 | 1076 | #ifdef DOS_NT |
199607e4 RS |
1077 | if (newdir) |
1078 | { | |
1079 | /* First ensure newdir is an absolute name. */ | |
1080 | if ( | |
1081 | /* Detect MSDOS file names with drive specifiers. */ | |
1082 | ! (IS_DRIVE (newdir[0]) | |
1083 | && IS_DEVICE_SEP (newdir[1]) && IS_DIRECTORY_SEP (newdir[2])) | |
1084 | #ifdef WINDOWSNT | |
1085 | /* Detect Windows file names in UNC format. */ | |
1086 | && ! (IS_DIRECTORY_SEP (newdir[0]) && IS_DIRECTORY_SEP (newdir[1])) | |
1087 | #endif | |
1088 | ) | |
1089 | { | |
1090 | /* Effectively, let newdir be (expand-file-name newdir cwd). | |
1091 | Because of the admonition against calling expand-file-name | |
1092 | when we have pointers into lisp strings, we accomplish this | |
1093 | indirectly by prepending newdir to nm if necessary, and using | |
1094 | cwd (or the wd of newdir's drive) as the new newdir. */ | |
1095 | ||
c70a4df6 | 1096 | if (IS_DRIVE (newdir[0]) && IS_DEVICE_SEP (newdir[1])) |
199607e4 RS |
1097 | { |
1098 | drive = newdir[0]; | |
1099 | newdir += 2; | |
1100 | } | |
1101 | if (!IS_DIRECTORY_SEP (nm[0])) | |
1102 | { | |
1103 | char * tmp = alloca (strlen (newdir) + strlen (nm) + 2); | |
1104 | file_name_as_directory (tmp, newdir); | |
1105 | strcat (tmp, nm); | |
1106 | nm = tmp; | |
1107 | } | |
1108 | newdir = alloca (MAXPATHLEN + 1); | |
1109 | if (drive) | |
1110 | { | |
1111 | if (!getdefdir (toupper (drive) - 'A' + 1, newdir)) | |
1112 | newdir = "/"; | |
1113 | } | |
1114 | else | |
1115 | getwd (newdir); | |
1116 | } | |
1117 | ||
1118 | /* Strip off drive name from prefix, if present. */ | |
c70a4df6 | 1119 | if (IS_DRIVE (newdir[0]) && IS_DEVICE_SEP (newdir[1])) |
199607e4 RS |
1120 | { |
1121 | drive = newdir[0]; | |
1122 | newdir += 2; | |
1123 | } | |
1124 | ||
1125 | /* Keep only a prefix from newdir if nm starts with slash | |
82330e7f | 1126 | (//server/share for UNC, nothing otherwise). */ |
9a1dc3be | 1127 | if (IS_DIRECTORY_SEP (nm[0]) && collapse_newdir) |
199607e4 RS |
1128 | { |
1129 | #ifdef WINDOWSNT | |
1130 | if (IS_DIRECTORY_SEP (newdir[0]) && IS_DIRECTORY_SEP (newdir[1])) | |
1131 | { | |
f5acc071 | 1132 | unsigned char *p; |
199607e4 RS |
1133 | newdir = strcpy (alloca (strlen (newdir) + 1), newdir); |
1134 | p = newdir + 2; | |
1135 | while (*p && !IS_DIRECTORY_SEP (*p)) p++; | |
1136 | p++; | |
1137 | while (*p && !IS_DIRECTORY_SEP (*p)) p++; | |
1138 | *p = 0; | |
1139 | } | |
1140 | else | |
1141 | #endif | |
1142 | newdir = ""; | |
1143 | } | |
1144 | } | |
5e570b75 | 1145 | #endif /* DOS_NT */ |
199607e4 RS |
1146 | |
1147 | if (newdir) | |
bfb61299 | 1148 | { |
57676091 | 1149 | /* Get rid of any slash at the end of newdir, unless newdir is |
f0f95d31 | 1150 | just / or // (an incomplete UNC name). */ |
199607e4 | 1151 | length = strlen (newdir); |
f0f95d31 | 1152 | if (length > 1 && IS_DIRECTORY_SEP (newdir[length - 1]) |
57676091 RS |
1153 | #ifdef WINDOWSNT |
1154 | && !(length == 2 && IS_DIRECTORY_SEP (newdir[0])) | |
1155 | #endif | |
1156 | ) | |
bfb61299 JB |
1157 | { |
1158 | unsigned char *temp = (unsigned char *) alloca (length); | |
72af86bd | 1159 | memcpy (temp, newdir, length - 1); |
bfb61299 JB |
1160 | temp[length - 1] = 0; |
1161 | newdir = temp; | |
1162 | } | |
1163 | tlen = length + 1; | |
1164 | } | |
1165 | else | |
1166 | tlen = 0; | |
570d7624 | 1167 | |
bfb61299 JB |
1168 | /* Now concatenate the directory and name to new space in the stack frame */ |
1169 | tlen += strlen (nm) + 1; | |
5e570b75 | 1170 | #ifdef DOS_NT |
f0f95d31 RS |
1171 | /* Reserve space for drive specifier and escape prefix, since either |
1172 | or both may need to be inserted. (The Microsoft x86 compiler | |
5e570b75 | 1173 | produces incorrect code if the following two lines are combined.) */ |
f0f95d31 RS |
1174 | target = (unsigned char *) alloca (tlen + 4); |
1175 | target += 4; | |
5e570b75 | 1176 | #else /* not DOS_NT */ |
570d7624 | 1177 | target = (unsigned char *) alloca (tlen); |
5e570b75 | 1178 | #endif /* not DOS_NT */ |
570d7624 JB |
1179 | *target = 0; |
1180 | ||
1181 | if (newdir) | |
1182 | { | |
5e570b75 | 1183 | if (nm[0] == 0 || IS_DIRECTORY_SEP (nm[0])) |
f5321b5c | 1184 | { |
3ea2d8b2 | 1185 | #ifdef DOS_NT |
f5321b5c RS |
1186 | /* If newdir is effectively "C:/", then the drive letter will have |
1187 | been stripped and newdir will be "/". Concatenating with an | |
1188 | absolute directory in nm produces "//", which will then be | |
1189 | incorrectly treated as a network share. Ignore newdir in | |
1190 | this case (keeping the drive letter). */ | |
efdc16c9 | 1191 | if (!(drive && nm[0] && IS_DIRECTORY_SEP (newdir[0]) |
f5321b5c RS |
1192 | && newdir[1] == '\0')) |
1193 | #endif | |
1194 | strcpy (target, newdir); | |
1195 | } | |
570d7624 | 1196 | else |
c77d647e | 1197 | file_name_as_directory (target, newdir); |
570d7624 JB |
1198 | } |
1199 | ||
1200 | strcat (target, nm); | |
199607e4 | 1201 | |
214378ec GM |
1202 | /* Now canonicalize by removing `//', `/.' and `/foo/..' if they |
1203 | appear. */ | |
5b5a2ea1 SM |
1204 | { |
1205 | unsigned char *p = target; | |
1206 | unsigned char *o = target; | |
570d7624 | 1207 | |
5b5a2ea1 SM |
1208 | while (*p) |
1209 | { | |
5b5a2ea1 SM |
1210 | if (!IS_DIRECTORY_SEP (*p)) |
1211 | { | |
1212 | *o++ = *p++; | |
1213 | } | |
1214 | else if (p[1] == '.' | |
1215 | && (IS_DIRECTORY_SEP (p[2]) | |
1216 | || p[2] == 0)) | |
1217 | { | |
1218 | /* If "/." is the entire filename, keep the "/". Otherwise, | |
1219 | just delete the whole "/.". */ | |
1220 | if (o == target && p[2] == '\0') | |
1221 | *o++ = *p; | |
1222 | p += 2; | |
1223 | } | |
1224 | else if (p[1] == '.' && p[2] == '.' | |
1225 | /* `/../' is the "superroot" on certain file systems. | |
1226 | Turned off on DOS_NT systems because they have no | |
1227 | "superroot" and because this causes us to produce | |
1228 | file names like "d:/../foo" which fail file-related | |
1229 | functions of the underlying OS. (To reproduce, try a | |
1230 | long series of "../../" in default_directory, longer | |
1231 | than the number of levels from the root.) */ | |
aa4060b9 | 1232 | #ifndef DOS_NT |
5b5a2ea1 | 1233 | && o != target |
aa4060b9 | 1234 | #endif |
5b5a2ea1 SM |
1235 | && (IS_DIRECTORY_SEP (p[3]) || p[3] == 0)) |
1236 | { | |
972ed246 JR |
1237 | #ifdef WINDOWSNT |
1238 | unsigned char *prev_o = o; | |
1239 | #endif | |
5b5a2ea1 SM |
1240 | while (o != target && (--o) && !IS_DIRECTORY_SEP (*o)) |
1241 | ; | |
972ed246 JR |
1242 | #ifdef WINDOWSNT |
1243 | /* Don't go below server level in UNC filenames. */ | |
1244 | if (o == target + 1 && IS_DIRECTORY_SEP (*o) | |
1245 | && IS_DIRECTORY_SEP (*target)) | |
1246 | o = prev_o; | |
1247 | else | |
1248 | #endif | |
5b5a2ea1 SM |
1249 | /* Keep initial / only if this is the whole name. */ |
1250 | if (o == target && IS_ANY_SEP (*o) && p[3] == 0) | |
1251 | ++o; | |
1252 | p += 3; | |
1253 | } | |
1254 | else if (p > target && IS_DIRECTORY_SEP (p[1])) | |
1255 | /* Collapse multiple `/' in a row. */ | |
1256 | p++; | |
1257 | else | |
1258 | { | |
1259 | *o++ = *p++; | |
1260 | } | |
5b5a2ea1 | 1261 | } |
570d7624 | 1262 | |
5e570b75 | 1263 | #ifdef DOS_NT |
5b5a2ea1 | 1264 | /* At last, set drive name. */ |
5e570b75 | 1265 | #ifdef WINDOWSNT |
5b5a2ea1 SM |
1266 | /* Except for network file name. */ |
1267 | if (!(IS_DIRECTORY_SEP (target[0]) && IS_DIRECTORY_SEP (target[1]))) | |
5e570b75 | 1268 | #endif /* WINDOWSNT */ |
5b5a2ea1 SM |
1269 | { |
1270 | if (!drive) abort (); | |
1271 | target -= 2; | |
1272 | target[0] = DRIVE_LETTER (drive); | |
1273 | target[1] = ':'; | |
1274 | } | |
1275 | /* Reinsert the escape prefix if required. */ | |
1276 | if (is_escaped) | |
1277 | { | |
1278 | target -= 2; | |
1279 | target[0] = '/'; | |
1280 | target[1] = ':'; | |
1281 | } | |
087fc47a | 1282 | dostounix_filename (target); |
5e570b75 | 1283 | #endif /* DOS_NT */ |
4c3c22f3 | 1284 | |
5b5a2ea1 SM |
1285 | result = make_specified_string (target, -1, o - target, multibyte); |
1286 | } | |
beb402de KG |
1287 | |
1288 | /* Again look to see if the file name has special constructs in it | |
1289 | and perhaps call the corresponding file handler. This is needed | |
1290 | for filenames such as "/foo/../user@host:/bar/../baz". Expanding | |
1291 | the ".." component gives us "/user@host:/bar/../baz" which needs | |
1292 | to be expanded again. */ | |
1293 | handler = Ffind_file_name_handler (result, Qexpand_file_name); | |
1294 | if (!NILP (handler)) | |
1295 | return call3 (handler, Qexpand_file_name, result, default_directory); | |
1296 | ||
1297 | return result; | |
570d7624 | 1298 | } |
5e570b75 | 1299 | |
4887597a EZ |
1300 | #if 0 |
1301 | /* PLEASE DO NOT DELETE THIS COMMENTED-OUT VERSION! | |
1302 | This is the old version of expand-file-name, before it was thoroughly | |
1303 | rewritten for Emacs 10.31. We leave this version here commented-out, | |
1304 | because the code is very complex and likely to have subtle bugs. If | |
1305 | bugs _are_ found, it might be of interest to look at the old code and | |
1306 | see what did it do in the relevant situation. | |
1307 | ||
30f50381 GM |
1308 | Don't remove this code: it's true that it will be accessible |
1309 | from the repository, but a few years from deletion, people will | |
1310 | forget it is there. */ | |
4887597a EZ |
1311 | |
1312 | /* Changed this DEFUN to a DEAFUN, so as not to confuse `make-docfile'. */ | |
1313 | DEAFUN ("expand-file-name", Fexpand_file_name, Sexpand_file_name, 1, 2, 0, | |
1314 | "Convert FILENAME to absolute, and canonicalize it.\n\ | |
1315 | Second arg DEFAULT is directory to start with if FILENAME is relative\n\ | |
c70a4df6 | 1316 | \(does not start with slash); if DEFAULT is nil or missing,\n\ |
4887597a EZ |
1317 | the current buffer's value of default-directory is used.\n\ |
1318 | Filenames containing `.' or `..' as components are simplified;\n\ | |
1319 | initial `~/' expands to your home directory.\n\ | |
1320 | See also the function `substitute-in-file-name'.") | |
1321 | (name, defalt) | |
1322 | Lisp_Object name, defalt; | |
1323 | { | |
1324 | unsigned char *nm; | |
1325 | ||
1326 | register unsigned char *newdir, *p, *o; | |
1327 | int tlen; | |
1328 | unsigned char *target; | |
1329 | struct passwd *pw; | |
1330 | int lose; | |
4887597a | 1331 | |
b7826503 | 1332 | CHECK_STRING (name); |
d5db4077 | 1333 | nm = SDATA (name); |
4887597a EZ |
1334 | |
1335 | /* If nm is absolute, flush ...// and detect /./ and /../. | |
1336 | If no /./ or /../ we can return right away. */ | |
7c2fb837 | 1337 | if (nm[0] == '/') |
4887597a EZ |
1338 | { |
1339 | p = nm; | |
1340 | lose = 0; | |
1341 | while (*p) | |
1342 | { | |
1343 | if (p[0] == '/' && p[1] == '/' | |
4887597a EZ |
1344 | ) |
1345 | nm = p + 1; | |
1346 | if (p[0] == '/' && p[1] == '~') | |
1347 | nm = p + 1, lose = 1; | |
1348 | if (p[0] == '/' && p[1] == '.' | |
1349 | && (p[2] == '/' || p[2] == 0 | |
1350 | || (p[2] == '.' && (p[3] == '/' || p[3] == 0)))) | |
1351 | lose = 1; | |
4887597a EZ |
1352 | p++; |
1353 | } | |
1354 | if (!lose) | |
1355 | { | |
d5db4077 | 1356 | if (nm == SDATA (name)) |
4887597a EZ |
1357 | return name; |
1358 | return build_string (nm); | |
1359 | } | |
1360 | } | |
1361 | ||
1362 | /* Now determine directory to start with and put it in NEWDIR */ | |
1363 | ||
1364 | newdir = 0; | |
1365 | ||
1366 | if (nm[0] == '~') /* prefix ~ */ | |
7c2fb837 | 1367 | if (nm[1] == '/' || nm[1] == 0)/* ~/filename */ |
4887597a EZ |
1368 | { |
1369 | if (!(newdir = (unsigned char *) egetenv ("HOME"))) | |
1370 | newdir = (unsigned char *) ""; | |
1371 | nm++; | |
4887597a EZ |
1372 | } |
1373 | else /* ~user/filename */ | |
1374 | { | |
1375 | /* Get past ~ to user */ | |
1376 | unsigned char *user = nm + 1; | |
1377 | /* Find end of name. */ | |
8966b757 | 1378 | unsigned char *ptr = (unsigned char *) strchr (user, '/'); |
4887597a | 1379 | int len = ptr ? ptr - user : strlen (user); |
4887597a EZ |
1380 | /* Copy the user name into temp storage. */ |
1381 | o = (unsigned char *) alloca (len + 1); | |
72af86bd | 1382 | memcpy (o, user, len); |
4887597a EZ |
1383 | o[len] = 0; |
1384 | ||
1385 | /* Look up the user name. */ | |
67c08d6c | 1386 | BLOCK_INPUT; |
4887597a | 1387 | pw = (struct passwd *) getpwnam (o + 1); |
67c08d6c | 1388 | UNBLOCK_INPUT; |
4887597a EZ |
1389 | if (!pw) |
1390 | error ("\"%s\" isn't a registered user", o + 1); | |
1391 | ||
1392 | newdir = (unsigned char *) pw->pw_dir; | |
1393 | ||
1394 | /* Discard the user name from NM. */ | |
1395 | nm += len; | |
1396 | } | |
1397 | ||
7c2fb837 | 1398 | if (nm[0] != '/' && !newdir) |
4887597a EZ |
1399 | { |
1400 | if (NILP (defalt)) | |
1401 | defalt = current_buffer->directory; | |
b7826503 | 1402 | CHECK_STRING (defalt); |
d5db4077 | 1403 | newdir = SDATA (defalt); |
4887597a EZ |
1404 | } |
1405 | ||
1406 | /* Now concatenate the directory and name to new space in the stack frame */ | |
1407 | ||
1408 | tlen = (newdir ? strlen (newdir) + 1 : 0) + strlen (nm) + 1; | |
1409 | target = (unsigned char *) alloca (tlen); | |
1410 | *target = 0; | |
1411 | ||
1412 | if (newdir) | |
1413 | { | |
4887597a EZ |
1414 | if (nm[0] == 0 || nm[0] == '/') |
1415 | strcpy (target, newdir); | |
1416 | else | |
4887597a EZ |
1417 | file_name_as_directory (target, newdir); |
1418 | } | |
1419 | ||
1420 | strcat (target, nm); | |
4887597a EZ |
1421 | |
1422 | /* Now canonicalize by removing /. and /foo/.. if they appear */ | |
1423 | ||
1424 | p = target; | |
1425 | o = target; | |
1426 | ||
1427 | while (*p) | |
1428 | { | |
4887597a EZ |
1429 | if (*p != '/') |
1430 | { | |
1431 | *o++ = *p++; | |
1432 | } | |
1433 | else if (!strncmp (p, "//", 2) | |
4887597a EZ |
1434 | ) |
1435 | { | |
1436 | o = target; | |
1437 | p++; | |
1438 | } | |
994a7262 RS |
1439 | else if (p[0] == '/' && p[1] == '.' |
1440 | && (p[2] == '/' || p[2] == 0)) | |
4887597a EZ |
1441 | p += 2; |
1442 | else if (!strncmp (p, "/..", 3) | |
1443 | /* `/../' is the "superroot" on certain file systems. */ | |
1444 | && o != target | |
1445 | && (p[3] == '/' || p[3] == 0)) | |
1446 | { | |
1447 | while (o != target && *--o != '/') | |
1448 | ; | |
4887597a EZ |
1449 | if (o == target && *o == '/') |
1450 | ++o; | |
1451 | p += 3; | |
1452 | } | |
1453 | else | |
1454 | { | |
1455 | *o++ = *p++; | |
1456 | } | |
4887597a EZ |
1457 | } |
1458 | ||
1459 | return make_string (target, o - target); | |
1460 | } | |
1461 | #endif | |
570d7624 | 1462 | \f |
c70a4df6 SM |
1463 | /* If /~ or // appears, discard everything through first slash. */ |
1464 | static int | |
971de7fb | 1465 | file_name_absolute_p (const unsigned char *filename) |
c70a4df6 SM |
1466 | { |
1467 | return | |
1468 | (IS_DIRECTORY_SEP (*filename) || *filename == '~' | |
c70a4df6 SM |
1469 | #ifdef DOS_NT |
1470 | || (IS_DRIVE (*filename) && IS_DEVICE_SEP (filename[1]) | |
1471 | && IS_DIRECTORY_SEP (filename[2])) | |
1472 | #endif | |
1473 | ); | |
1474 | } | |
1475 | ||
1476 | static unsigned char * | |
971de7fb | 1477 | search_embedded_absfilename (unsigned char *nm, unsigned char *endp) |
c70a4df6 SM |
1478 | { |
1479 | unsigned char *p, *s; | |
1480 | ||
1481 | for (p = nm + 1; p < endp; p++) | |
1482 | { | |
1483 | if ((0 | |
c70a4df6 SM |
1484 | || IS_DIRECTORY_SEP (p[-1])) |
1485 | && file_name_absolute_p (p) | |
e39a993c | 1486 | #if defined (WINDOWSNT) || defined(CYGWIN) |
c70a4df6 SM |
1487 | /* // at start of file name is meaningful in Apollo, |
1488 | WindowsNT and Cygwin systems. */ | |
f34574c6 | 1489 | && !(IS_DIRECTORY_SEP (p[0]) && p - 1 == nm) |
e39a993c | 1490 | #endif /* not (WINDOWSNT || CYGWIN) */ |
c70a4df6 SM |
1491 | ) |
1492 | { | |
7c2fb837 | 1493 | for (s = p; *s && (!IS_DIRECTORY_SEP (*s)); s++); |
c70a4df6 SM |
1494 | if (p[0] == '~' && s > p + 1) /* we've got "/~something/" */ |
1495 | { | |
1496 | unsigned char *o = alloca (s - p + 1); | |
1497 | struct passwd *pw; | |
72af86bd | 1498 | memcpy (o, p, s - p); |
c70a4df6 SM |
1499 | o [s - p] = 0; |
1500 | ||
1501 | /* If we have ~user and `user' exists, discard | |
1502 | everything up to ~. But if `user' does not exist, leave | |
1503 | ~user alone, it might be a literal file name. */ | |
67c08d6c YM |
1504 | BLOCK_INPUT; |
1505 | pw = getpwnam (o + 1); | |
1506 | UNBLOCK_INPUT; | |
1507 | if (pw) | |
c70a4df6 | 1508 | return p; |
c70a4df6 SM |
1509 | } |
1510 | else | |
1511 | return p; | |
1512 | } | |
1513 | } | |
1514 | return NULL; | |
1515 | } | |
1516 | ||
570d7624 | 1517 | DEFUN ("substitute-in-file-name", Fsubstitute_in_file_name, |
8c1a1077 PJ |
1518 | Ssubstitute_in_file_name, 1, 1, 0, |
1519 | doc: /* Substitute environment variables referred to in FILENAME. | |
1520 | `$FOO' where FOO is an environment variable name means to substitute | |
1521 | the value of that variable. The variable name should be terminated | |
1522 | with a character not a letter, digit or underscore; otherwise, enclose | |
1523 | the entire variable name in braces. | |
c68845e0 GM |
1524 | |
1525 | If `/~' appears, all of FILENAME through that `/' is discarded. | |
1526 | If `//' appears, everything up to and including the first of | |
1527 | those `/' is discarded. */) | |
5842a27b | 1528 | (Lisp_Object filename) |
570d7624 JB |
1529 | { |
1530 | unsigned char *nm; | |
1531 | ||
1532 | register unsigned char *s, *p, *o, *x, *endp; | |
6bbd7a29 | 1533 | unsigned char *target = NULL; |
570d7624 JB |
1534 | int total = 0; |
1535 | int substituted = 0; | |
58aec0d6 | 1536 | int multibyte; |
570d7624 | 1537 | unsigned char *xnm; |
8ce069f5 | 1538 | Lisp_Object handler; |
570d7624 | 1539 | |
b7826503 | 1540 | CHECK_STRING (filename); |
570d7624 | 1541 | |
58aec0d6 JR |
1542 | multibyte = STRING_MULTIBYTE (filename); |
1543 | ||
8ce069f5 RS |
1544 | /* If the file name has special constructs in it, |
1545 | call the corresponding file handler. */ | |
3b7f6e60 | 1546 | handler = Ffind_file_name_handler (filename, Qsubstitute_in_file_name); |
8ce069f5 | 1547 | if (!NILP (handler)) |
3b7f6e60 | 1548 | return call2 (handler, Qsubstitute_in_file_name, filename); |
8ce069f5 | 1549 | |
58aec0d6 JR |
1550 | /* Always work on a copy of the string, in case GC happens during |
1551 | decode of environment variables, causing the original Lisp_String | |
1552 | data to be relocated. */ | |
0f3f018c | 1553 | nm = (unsigned char *) alloca (SBYTES (filename) + 1); |
72af86bd | 1554 | memcpy (nm, SDATA (filename), SBYTES (filename) + 1); |
0f3f018c | 1555 | |
58aec0d6 | 1556 | #ifdef DOS_NT |
087fc47a | 1557 | dostounix_filename (nm); |
d5db4077 | 1558 | substituted = (strcmp (nm, SDATA (filename)) != 0); |
a5a1cc06 | 1559 | #endif |
d5db4077 | 1560 | endp = nm + SBYTES (filename); |
570d7624 | 1561 | |
82330e7f | 1562 | /* If /~ or // appears, discard everything through first slash. */ |
c70a4df6 SM |
1563 | p = search_embedded_absfilename (nm, endp); |
1564 | if (p) | |
1565 | /* Start over with the new string, so we check the file-name-handler | |
1566 | again. Important with filenames like "/home/foo//:/hello///there" | |
1567 | which whould substitute to "/:/hello///there" rather than "/there". */ | |
1568 | return Fsubstitute_in_file_name | |
58aec0d6 | 1569 | (make_specified_string (p, -1, endp - p, multibyte)); |
570d7624 JB |
1570 | |
1571 | /* See if any variables are substituted into the string | |
1572 | and find the total length of their values in `total' */ | |
1573 | ||
1574 | for (p = nm; p != endp;) | |
1575 | if (*p != '$') | |
1576 | p++; | |
1577 | else | |
1578 | { | |
1579 | p++; | |
1580 | if (p == endp) | |
1581 | goto badsubst; | |
1582 | else if (*p == '$') | |
1583 | { | |
1584 | /* "$$" means a single "$" */ | |
1585 | p++; | |
1586 | total -= 1; | |
1587 | substituted = 1; | |
1588 | continue; | |
1589 | } | |
1590 | else if (*p == '{') | |
1591 | { | |
1592 | o = ++p; | |
1593 | while (p != endp && *p != '}') p++; | |
1594 | if (*p != '}') goto missingclose; | |
1595 | s = p; | |
1596 | } | |
1597 | else | |
1598 | { | |
1599 | o = p; | |
1600 | while (p != endp && (isalnum (*p) || *p == '_')) p++; | |
1601 | s = p; | |
1602 | } | |
1603 | ||
1604 | /* Copy out the variable name */ | |
1605 | target = (unsigned char *) alloca (s - o + 1); | |
1606 | strncpy (target, o, s - o); | |
1607 | target[s - o] = 0; | |
5e570b75 | 1608 | #ifdef DOS_NT |
4c3c22f3 | 1609 | strupr (target); /* $home == $HOME etc. */ |
5e570b75 | 1610 | #endif /* DOS_NT */ |
570d7624 JB |
1611 | |
1612 | /* Get variable value */ | |
1613 | o = (unsigned char *) egetenv (target); | |
8d2ced53 | 1614 | if (o) |
58aec0d6 JR |
1615 | { |
1616 | /* Don't try to guess a maximum length - UTF8 can use up to | |
1617 | four bytes per character. This code is unlikely to run | |
1618 | in a situation that requires performance, so decoding the | |
1619 | env variables twice should be acceptable. Note that | |
1620 | decoding may cause a garbage collect. */ | |
1621 | Lisp_Object orig, decoded; | |
1622 | orig = make_unibyte_string (o, strlen (o)); | |
1623 | decoded = DECODE_FILE (orig); | |
1624 | total += SBYTES (decoded); | |
8d2ced53 SM |
1625 | substituted = 1; |
1626 | } | |
1627 | else if (*p == '}') | |
1628 | goto badvar; | |
570d7624 JB |
1629 | } |
1630 | ||
1631 | if (!substituted) | |
3b7f6e60 | 1632 | return filename; |
570d7624 JB |
1633 | |
1634 | /* If substitution required, recopy the string and do it */ | |
1635 | /* Make space in stack frame for the new copy */ | |
d5db4077 | 1636 | xnm = (unsigned char *) alloca (SBYTES (filename) + total + 1); |
570d7624 JB |
1637 | x = xnm; |
1638 | ||
1639 | /* Copy the rest of the name through, replacing $ constructs with values */ | |
1640 | for (p = nm; *p;) | |
1641 | if (*p != '$') | |
1642 | *x++ = *p++; | |
1643 | else | |
1644 | { | |
1645 | p++; | |
1646 | if (p == endp) | |
1647 | goto badsubst; | |
1648 | else if (*p == '$') | |
1649 | { | |
1650 | *x++ = *p++; | |
1651 | continue; | |
1652 | } | |
1653 | else if (*p == '{') | |
1654 | { | |
1655 | o = ++p; | |
1656 | while (p != endp && *p != '}') p++; | |
1657 | if (*p != '}') goto missingclose; | |
1658 | s = p++; | |
1659 | } | |
1660 | else | |
1661 | { | |
1662 | o = p; | |
1663 | while (p != endp && (isalnum (*p) || *p == '_')) p++; | |
1664 | s = p; | |
1665 | } | |
1666 | ||
1667 | /* Copy out the variable name */ | |
1668 | target = (unsigned char *) alloca (s - o + 1); | |
1669 | strncpy (target, o, s - o); | |
1670 | target[s - o] = 0; | |
5e570b75 | 1671 | #ifdef DOS_NT |
4c3c22f3 | 1672 | strupr (target); /* $home == $HOME etc. */ |
5e570b75 | 1673 | #endif /* DOS_NT */ |
570d7624 JB |
1674 | |
1675 | /* Get variable value */ | |
1676 | o = (unsigned char *) egetenv (target); | |
570d7624 | 1677 | if (!o) |
8d2ced53 SM |
1678 | { |
1679 | *x++ = '$'; | |
1680 | strcpy (x, target); x+= strlen (target); | |
1681 | } | |
60d67b83 RS |
1682 | else |
1683 | { | |
58aec0d6 JR |
1684 | Lisp_Object orig, decoded; |
1685 | int orig_length, decoded_length; | |
1686 | orig_length = strlen (o); | |
1687 | orig = make_unibyte_string (o, orig_length); | |
1688 | decoded = DECODE_FILE (orig); | |
1689 | decoded_length = SBYTES (decoded); | |
1690 | strncpy (x, SDATA (decoded), decoded_length); | |
1691 | x += decoded_length; | |
1692 | ||
1693 | /* If environment variable needed decoding, return value | |
1694 | needs to be multibyte. */ | |
1695 | if (decoded_length != orig_length | |
1696 | || strncmp (SDATA (decoded), o, orig_length)) | |
1697 | multibyte = 1; | |
60d67b83 | 1698 | } |
570d7624 JB |
1699 | } |
1700 | ||
1701 | *x = 0; | |
1702 | ||
82330e7f | 1703 | /* If /~ or // appears, discard everything through first slash. */ |
c70a4df6 SM |
1704 | while ((p = search_embedded_absfilename (xnm, x))) |
1705 | /* This time we do not start over because we've already expanded envvars | |
1706 | and replaced $$ with $. Maybe we should start over as well, but we'd | |
1707 | need to quote some $ to $$ first. */ | |
1708 | xnm = p; | |
570d7624 | 1709 | |
58aec0d6 | 1710 | return make_specified_string (xnm, -1, x - xnm, multibyte); |
570d7624 JB |
1711 | |
1712 | badsubst: | |
1713 | error ("Bad format environment-variable substitution"); | |
1714 | missingclose: | |
1715 | error ("Missing \"}\" in environment-variable substitution"); | |
1716 | badvar: | |
1717 | error ("Substituting nonexistent environment variable \"%s\"", target); | |
1718 | ||
1719 | /* NOTREACHED */ | |
6bbd7a29 | 1720 | return Qnil; |
570d7624 JB |
1721 | } |
1722 | \f | |
067ffa38 | 1723 | /* A slightly faster and more convenient way to get |
298b760e | 1724 | (directory-file-name (expand-file-name FOO)). */ |
067ffa38 | 1725 | |
570d7624 | 1726 | Lisp_Object |
971de7fb | 1727 | expand_and_dir_to_file (Lisp_Object filename, Lisp_Object defdir) |
570d7624 | 1728 | { |
199607e4 | 1729 | register Lisp_Object absname; |
570d7624 | 1730 | |
199607e4 | 1731 | absname = Fexpand_file_name (filename, defdir); |
7c2fb837 | 1732 | |
199607e4 | 1733 | /* Remove final slash, if any (unless this is the root dir). |
570d7624 | 1734 | stat behaves differently depending! */ |
d5db4077 KR |
1735 | if (SCHARS (absname) > 1 |
1736 | && IS_DIRECTORY_SEP (SREF (absname, SBYTES (absname) - 1)) | |
1737 | && !IS_DEVICE_SEP (SREF (absname, SBYTES (absname)-2))) | |
ddc61f46 | 1738 | /* We cannot take shortcuts; they might be wrong for magic file names. */ |
199607e4 | 1739 | absname = Fdirectory_file_name (absname); |
199607e4 | 1740 | return absname; |
570d7624 JB |
1741 | } |
1742 | \f | |
3ed15d97 RS |
1743 | /* Signal an error if the file ABSNAME already exists. |
1744 | If INTERACTIVE is nonzero, ask the user whether to proceed, | |
1745 | and bypass the error if the user says to go ahead. | |
1746 | QUERYSTRING is a name for the action that is being considered | |
1747 | to alter the file. | |
de1d0127 | 1748 | |
3ed15d97 | 1749 | *STATPTR is used to store the stat information if the file exists. |
de1d0127 | 1750 | If the file does not exist, STATPTR->st_mode is set to 0. |
b8b29dc9 RS |
1751 | If STATPTR is null, we don't store into it. |
1752 | ||
1753 | If QUICK is nonzero, we ask for y or n, not yes or no. */ | |
3ed15d97 | 1754 | |
c4df73f9 | 1755 | void |
8ea90aa3 | 1756 | barf_or_query_if_file_exists (Lisp_Object absname, const unsigned char *querystring, int interactive, struct stat *statptr, int quick) |
570d7624 | 1757 | { |
643c73b9 | 1758 | register Lisp_Object tem, encoded_filename; |
4018b5ef | 1759 | struct stat statbuf; |
570d7624 JB |
1760 | struct gcpro gcpro1; |
1761 | ||
643c73b9 RS |
1762 | encoded_filename = ENCODE_FILE (absname); |
1763 | ||
4018b5ef RS |
1764 | /* stat is a good way to tell whether the file exists, |
1765 | regardless of what access permissions it has. */ | |
f72b5416 | 1766 | if (lstat (SDATA (encoded_filename), &statbuf) >= 0) |
570d7624 JB |
1767 | { |
1768 | if (! interactive) | |
24b1ddad KS |
1769 | xsignal2 (Qfile_already_exists, |
1770 | build_string ("File already exists"), absname); | |
570d7624 | 1771 | GCPRO1 (absname); |
67e8e2b8 RS |
1772 | tem = format2 ("File %s already exists; %s anyway? ", |
1773 | absname, build_string (querystring)); | |
b8b29dc9 | 1774 | if (quick) |
5616cc54 | 1775 | tem = call1 (intern ("y-or-n-p"), tem); |
b8b29dc9 RS |
1776 | else |
1777 | tem = do_yes_or_no_p (tem); | |
570d7624 | 1778 | UNGCPRO; |
265a9e55 | 1779 | if (NILP (tem)) |
24b1ddad KS |
1780 | xsignal2 (Qfile_already_exists, |
1781 | build_string ("File already exists"), absname); | |
3ed15d97 RS |
1782 | if (statptr) |
1783 | *statptr = statbuf; | |
1784 | } | |
1785 | else | |
1786 | { | |
1787 | if (statptr) | |
1788 | statptr->st_mode = 0; | |
570d7624 JB |
1789 | } |
1790 | return; | |
1791 | } | |
1792 | ||
574c05e2 | 1793 | DEFUN ("copy-file", Fcopy_file, Scopy_file, 2, 6, |
7c0f6118 | 1794 | "fCopy file: \nGCopy %s to file: \np\nP", |
8c1a1077 PJ |
1795 | doc: /* Copy FILE to NEWNAME. Both args must be strings. |
1796 | If NEWNAME names a directory, copy FILE there. | |
795c20df CY |
1797 | |
1798 | This function always sets the file modes of the output file to match | |
1799 | the input file. | |
1800 | ||
1801 | The optional third argument OK-IF-ALREADY-EXISTS specifies what to do | |
1802 | if file NEWNAME already exists. If OK-IF-ALREADY-EXISTS is nil, we | |
1803 | signal a `file-already-exists' error without overwriting. If | |
1804 | OK-IF-ALREADY-EXISTS is a number, we request confirmation from the user | |
1805 | about overwriting; this is what happens in interactive use with M-x. | |
1806 | Any other value for OK-IF-ALREADY-EXISTS means to overwrite the | |
1807 | existing file. | |
c50f15d0 | 1808 | |
7f08b80e | 1809 | Fourth arg KEEP-TIME non-nil means give the output file the same |
8c1a1077 | 1810 | last-modified time as the old one. (This works on only some systems.) |
c50f15d0 | 1811 | |
7fce7dfe EZ |
1812 | A prefix arg makes KEEP-TIME non-nil. |
1813 | ||
586702ce | 1814 | If PRESERVE-UID-GID is non-nil, we try to transfer the |
574c05e2 KK |
1815 | uid and gid of FILE to NEWNAME. |
1816 | ||
f5783df3 | 1817 | If PRESERVE-SELINUX-CONTEXT is non-nil and SELinux is enabled |
574c05e2 | 1818 | on the system, we copy the SELinux context of FILE to NEWNAME. */) |
5842a27b | 1819 | (Lisp_Object file, Lisp_Object newname, Lisp_Object ok_if_already_exists, Lisp_Object keep_time, Lisp_Object preserve_uid_gid, Lisp_Object preserve_selinux_context) |
570d7624 JB |
1820 | { |
1821 | int ifd, ofd, n; | |
1822 | char buf[16 * 1024]; | |
3ed15d97 | 1823 | struct stat st, out_st; |
32f4334d | 1824 | Lisp_Object handler; |
b1d1b865 | 1825 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; |
aed13378 | 1826 | int count = SPECPDL_INDEX (); |
f73b0ada | 1827 | int input_file_statable_p; |
b1d1b865 | 1828 | Lisp_Object encoded_file, encoded_newname; |
574c05e2 KK |
1829 | #if HAVE_LIBSELINUX |
1830 | security_context_t con; | |
1831 | int fail, conlength = 0; | |
1832 | #endif | |
570d7624 | 1833 | |
b1d1b865 RS |
1834 | encoded_file = encoded_newname = Qnil; |
1835 | GCPRO4 (file, newname, encoded_file, encoded_newname); | |
b7826503 PJ |
1836 | CHECK_STRING (file); |
1837 | CHECK_STRING (newname); | |
b1d1b865 | 1838 | |
a9d14e54 | 1839 | if (!NILP (Ffile_directory_p (newname))) |
6b61353c | 1840 | newname = Fexpand_file_name (Ffile_name_nondirectory (file), newname); |
a9d14e54 GM |
1841 | else |
1842 | newname = Fexpand_file_name (newname, Qnil); | |
1843 | ||
3b7f6e60 | 1844 | file = Fexpand_file_name (file, Qnil); |
32f4334d | 1845 | |
0bf2eed2 | 1846 | /* If the input file name has special constructs in it, |
32f4334d | 1847 | call the corresponding file handler. */ |
3b7f6e60 | 1848 | handler = Ffind_file_name_handler (file, Qcopy_file); |
0bf2eed2 | 1849 | /* Likewise for output file name. */ |
51cf6d37 | 1850 | if (NILP (handler)) |
49307295 | 1851 | handler = Ffind_file_name_handler (newname, Qcopy_file); |
32f4334d | 1852 | if (!NILP (handler)) |
574c05e2 KK |
1853 | RETURN_UNGCPRO (call7 (handler, Qcopy_file, file, newname, |
1854 | ok_if_already_exists, keep_time, preserve_uid_gid, | |
1855 | preserve_selinux_context)); | |
32f4334d | 1856 | |
b1d1b865 RS |
1857 | encoded_file = ENCODE_FILE (file); |
1858 | encoded_newname = ENCODE_FILE (newname); | |
1859 | ||
265a9e55 | 1860 | if (NILP (ok_if_already_exists) |
93c30b5f | 1861 | || INTEGERP (ok_if_already_exists)) |
2f868094 | 1862 | barf_or_query_if_file_exists (newname, "copy to it", |
b8b29dc9 | 1863 | INTEGERP (ok_if_already_exists), &out_st, 0); |
d5db4077 | 1864 | else if (stat (SDATA (encoded_newname), &out_st) < 0) |
3ed15d97 | 1865 | out_st.st_mode = 0; |
570d7624 | 1866 | |
e8691c59 | 1867 | #ifdef WINDOWSNT |
d5db4077 | 1868 | if (!CopyFile (SDATA (encoded_file), |
efdc16c9 | 1869 | SDATA (encoded_newname), |
e8691c59 GM |
1870 | FALSE)) |
1871 | report_file_error ("Copying file", Fcons (file, Fcons (newname, Qnil))); | |
8b53dc06 JR |
1872 | /* CopyFile retains the timestamp by default. */ |
1873 | else if (NILP (keep_time)) | |
e8691c59 GM |
1874 | { |
1875 | EMACS_TIME now; | |
ad497129 JR |
1876 | DWORD attributes; |
1877 | char * filename; | |
1878 | ||
e8691c59 | 1879 | EMACS_GET_TIME (now); |
d5db4077 | 1880 | filename = SDATA (encoded_newname); |
ad497129 JR |
1881 | |
1882 | /* Ensure file is writable while its modified time is set. */ | |
1883 | attributes = GetFileAttributes (filename); | |
02cca86b | 1884 | SetFileAttributes (filename, attributes & ~FILE_ATTRIBUTE_READONLY); |
ad497129 JR |
1885 | if (set_file_times (filename, now, now)) |
1886 | { | |
1887 | /* Restore original attributes. */ | |
1888 | SetFileAttributes (filename, attributes); | |
24b1ddad KS |
1889 | xsignal2 (Qfile_date_error, |
1890 | build_string ("Cannot set file date"), newname); | |
ad497129 JR |
1891 | } |
1892 | /* Restore original attributes. */ | |
1893 | SetFileAttributes (filename, attributes); | |
e8691c59 GM |
1894 | } |
1895 | #else /* not WINDOWSNT */ | |
13336908 | 1896 | immediate_quit = 1; |
d5db4077 | 1897 | ifd = emacs_open (SDATA (encoded_file), O_RDONLY, 0); |
13336908 RS |
1898 | immediate_quit = 0; |
1899 | ||
570d7624 | 1900 | if (ifd < 0) |
3b7f6e60 | 1901 | report_file_error ("Opening input file", Fcons (file, Qnil)); |
570d7624 | 1902 | |
b5148e85 RS |
1903 | record_unwind_protect (close_file_unwind, make_number (ifd)); |
1904 | ||
f73b0ada BF |
1905 | /* We can only copy regular files and symbolic links. Other files are not |
1906 | copyable by us. */ | |
1907 | input_file_statable_p = (fstat (ifd, &st) >= 0); | |
1908 | ||
574c05e2 KK |
1909 | #if HAVE_LIBSELINUX |
1910 | if (!NILP (preserve_selinux_context) && is_selinux_enabled ()) | |
1911 | { | |
1912 | conlength = fgetfilecon (ifd, &con); | |
1913 | if (conlength == -1) | |
1914 | report_file_error ("Doing fgetfilecon", Fcons (file, Qnil)); | |
1915 | } | |
1916 | #endif | |
1917 | ||
3ed15d97 RS |
1918 | if (out_st.st_mode != 0 |
1919 | && st.st_dev == out_st.st_dev && st.st_ino == out_st.st_ino) | |
1920 | { | |
1921 | errno = 0; | |
1922 | report_file_error ("Input and output files are the same", | |
3b7f6e60 | 1923 | Fcons (file, Fcons (newname, Qnil))); |
3ed15d97 | 1924 | } |
3ed15d97 | 1925 | |
f73b0ada BF |
1926 | #if defined (S_ISREG) && defined (S_ISLNK) |
1927 | if (input_file_statable_p) | |
1928 | { | |
1929 | if (!(S_ISREG (st.st_mode)) && !(S_ISLNK (st.st_mode))) | |
1930 | { | |
1931 | #if defined (EISDIR) | |
1932 | /* Get a better looking error message. */ | |
1933 | errno = EISDIR; | |
1934 | #endif /* EISDIR */ | |
3b7f6e60 | 1935 | report_file_error ("Non-regular file", Fcons (file, Qnil)); |
f73b0ada BF |
1936 | } |
1937 | } | |
1938 | #endif /* S_ISREG && S_ISLNK */ | |
1939 | ||
4c3c22f3 RS |
1940 | #ifdef MSDOS |
1941 | /* System's default file type was set to binary by _fmode in emacs.c. */ | |
c50f15d0 | 1942 | ofd = emacs_open (SDATA (encoded_newname), |
7fce7dfe | 1943 | O_WRONLY | O_TRUNC | O_CREAT |
795c20df | 1944 | | (NILP (ok_if_already_exists) ? O_EXCL : 0), |
c50f15d0 RS |
1945 | S_IREAD | S_IWRITE); |
1946 | #else /* not MSDOS */ | |
1947 | ofd = emacs_open (SDATA (encoded_newname), | |
1948 | O_WRONLY | O_TRUNC | O_CREAT | |
795c20df | 1949 | | (NILP (ok_if_already_exists) ? O_EXCL : 0), |
c50f15d0 | 1950 | 0666); |
4c3c22f3 | 1951 | #endif /* not MSDOS */ |
570d7624 | 1952 | if (ofd < 0) |
3ed15d97 | 1953 | report_file_error ("Opening output file", Fcons (newname, Qnil)); |
b5148e85 RS |
1954 | |
1955 | record_unwind_protect (close_file_unwind, make_number (ofd)); | |
570d7624 | 1956 | |
b5148e85 RS |
1957 | immediate_quit = 1; |
1958 | QUIT; | |
68c45bf0 PE |
1959 | while ((n = emacs_read (ifd, buf, sizeof buf)) > 0) |
1960 | if (emacs_write (ofd, buf, n) != n) | |
3ed15d97 | 1961 | report_file_error ("I/O error", Fcons (newname, Qnil)); |
b5148e85 | 1962 | immediate_quit = 0; |
570d7624 | 1963 | |
b016179b EZ |
1964 | #ifndef MSDOS |
1965 | /* Preserve the original file modes, and if requested, also its | |
1966 | owner and group. */ | |
586702ce RS |
1967 | if (input_file_statable_p) |
1968 | { | |
b016179b EZ |
1969 | if (! NILP (preserve_uid_gid)) |
1970 | fchown (ofd, st.st_uid, st.st_gid); | |
586702ce | 1971 | fchmod (ofd, st.st_mode & 07777); |
586702ce | 1972 | } |
b016179b | 1973 | #endif /* not MSDOS */ |
586702ce | 1974 | |
574c05e2 KK |
1975 | #if HAVE_LIBSELINUX |
1976 | if (conlength > 0) | |
1977 | { | |
1978 | /* Set the modified context back to the file. */ | |
1979 | fail = fsetfilecon (ofd, con); | |
1980 | if (fail) | |
1981 | report_file_error ("Doing fsetfilecon", Fcons (newname, Qnil)); | |
1982 | ||
1983 | freecon (con); | |
1984 | } | |
1985 | #endif | |
1986 | ||
5acac34e | 1987 | /* Closing the output clobbers the file times on some systems. */ |
68c45bf0 | 1988 | if (emacs_close (ofd) < 0) |
5acac34e RS |
1989 | report_file_error ("I/O error", Fcons (newname, Qnil)); |
1990 | ||
f73b0ada | 1991 | if (input_file_statable_p) |
570d7624 | 1992 | { |
8ca6602c | 1993 | if (!NILP (keep_time)) |
570d7624 | 1994 | { |
de5bf5d3 JB |
1995 | EMACS_TIME atime, mtime; |
1996 | EMACS_SET_SECS_USECS (atime, st.st_atime, 0); | |
1997 | EMACS_SET_SECS_USECS (mtime, st.st_mtime, 0); | |
d5db4077 | 1998 | if (set_file_times (SDATA (encoded_newname), |
b1d1b865 | 1999 | atime, mtime)) |
24b1ddad KS |
2000 | xsignal2 (Qfile_date_error, |
2001 | build_string ("Cannot set file date"), newname); | |
570d7624 | 2002 | } |
570d7624 JB |
2003 | } |
2004 | ||
68c45bf0 | 2005 | emacs_close (ifd); |
b016179b | 2006 | |
ed68db4d | 2007 | #ifdef MSDOS |
b016179b EZ |
2008 | if (input_file_statable_p) |
2009 | { | |
2010 | /* In DJGPP v2.0 and later, fstat usually returns true file mode bits, | |
2011 | and if it can't, it tells so. Otherwise, under MSDOS we usually | |
2012 | get only the READ bit, which will make the copied file read-only, | |
2013 | so it's better not to chmod at all. */ | |
2014 | if ((_djstat_flags & _STFAIL_WRITEBIT) == 0) | |
2015 | chmod (SDATA (encoded_newname), st.st_mode & 07777); | |
2016 | } | |
ed68db4d | 2017 | #endif /* MSDOS */ |
b016179b | 2018 | #endif /* not WINDOWSNT */ |
5acac34e | 2019 | |
b5148e85 RS |
2020 | /* Discard the unwind protects. */ |
2021 | specpdl_ptr = specpdl + count; | |
2022 | ||
570d7624 JB |
2023 | UNGCPRO; |
2024 | return Qnil; | |
2025 | } | |
385b6cc7 | 2026 | \f |
9bbe01fb | 2027 | DEFUN ("make-directory-internal", Fmake_directory_internal, |
353cfc19 | 2028 | Smake_directory_internal, 1, 1, 0, |
8c1a1077 | 2029 | doc: /* Create a new directory named DIRECTORY. */) |
5842a27b | 2030 | (Lisp_Object directory) |
570d7624 | 2031 | { |
19290c65 | 2032 | const unsigned char *dir; |
32f4334d | 2033 | Lisp_Object handler; |
b1d1b865 | 2034 | Lisp_Object encoded_dir; |
570d7624 | 2035 | |
b7826503 | 2036 | CHECK_STRING (directory); |
3b7f6e60 | 2037 | directory = Fexpand_file_name (directory, Qnil); |
32f4334d | 2038 | |
3b7f6e60 | 2039 | handler = Ffind_file_name_handler (directory, Qmake_directory_internal); |
32f4334d | 2040 | if (!NILP (handler)) |
3b7f6e60 | 2041 | return call2 (handler, Qmake_directory_internal, directory); |
9bbe01fb | 2042 | |
b1d1b865 RS |
2043 | encoded_dir = ENCODE_FILE (directory); |
2044 | ||
d5db4077 | 2045 | dir = SDATA (encoded_dir); |
570d7624 | 2046 | |
5e570b75 RS |
2047 | #ifdef WINDOWSNT |
2048 | if (mkdir (dir) != 0) | |
2049 | #else | |
570d7624 | 2050 | if (mkdir (dir, 0777) != 0) |
5e570b75 | 2051 | #endif |
a9f2aeae | 2052 | report_file_error ("Creating directory", list1 (directory)); |
570d7624 | 2053 | |
32f4334d | 2054 | return Qnil; |
570d7624 JB |
2055 | } |
2056 | ||
9d8f3bd9 MA |
2057 | DEFUN ("delete-directory-internal", Fdelete_directory_internal, |
2058 | Sdelete_directory_internal, 1, 1, 0, | |
efdc16c9 | 2059 | doc: /* Delete the directory named DIRECTORY. Does not follow symlinks. */) |
5842a27b | 2060 | (Lisp_Object directory) |
570d7624 | 2061 | { |
19290c65 | 2062 | const unsigned char *dir; |
32f4334d | 2063 | Lisp_Object handler; |
b1d1b865 | 2064 | Lisp_Object encoded_dir; |
570d7624 | 2065 | |
b7826503 | 2066 | CHECK_STRING (directory); |
3b7f6e60 | 2067 | directory = Fdirectory_file_name (Fexpand_file_name (directory, Qnil)); |
b1d1b865 | 2068 | encoded_dir = ENCODE_FILE (directory); |
d5db4077 | 2069 | dir = SDATA (encoded_dir); |
b1d1b865 | 2070 | |
570d7624 | 2071 | if (rmdir (dir) != 0) |
a9f2aeae | 2072 | report_file_error ("Removing directory", list1 (directory)); |
570d7624 JB |
2073 | |
2074 | return Qnil; | |
2075 | } | |
2076 | ||
2e2bbddb | 2077 | DEFUN ("delete-file", Fdelete_file, Sdelete_file, 1, 2, |
f1a5d776 CY |
2078 | "(list (read-file-name \ |
2079 | (if (and delete-by-moving-to-trash (null current-prefix-arg)) \ | |
2080 | \"Move file to trash: \" \"Delete file: \") \ | |
2081 | nil default-directory (confirm-nonexistent-file-or-buffer)) \ | |
2082 | (null current-prefix-arg))", | |
efdc16c9 | 2083 | doc: /* Delete file named FILENAME. If it is a symlink, remove the symlink. |
53967e09 | 2084 | If file has multiple names, it continues to exist with the other names. |
f1a5d776 CY |
2085 | TRASH non-nil means to trash the file instead of deleting, provided |
2086 | `delete-by-moving-to-trash' is non-nil. | |
53967e09 | 2087 | |
f1a5d776 CY |
2088 | When called interactively, TRASH is t if no prefix argument is given. |
2089 | With a prefix argument, TRASH is nil. */) | |
5842a27b | 2090 | (Lisp_Object filename, Lisp_Object trash) |
570d7624 | 2091 | { |
32f4334d | 2092 | Lisp_Object handler; |
b1d1b865 | 2093 | Lisp_Object encoded_file; |
efdc16c9 | 2094 | struct gcpro gcpro1; |
b1d1b865 | 2095 | |
efdc16c9 | 2096 | GCPRO1 (filename); |
b4bd27c5 RS |
2097 | if (!NILP (Ffile_directory_p (filename)) |
2098 | && NILP (Ffile_symlink_p (filename))) | |
24b1ddad KS |
2099 | xsignal2 (Qfile_error, |
2100 | build_string ("Removing old name: is a directory"), | |
2101 | filename); | |
efdc16c9 | 2102 | UNGCPRO; |
570d7624 | 2103 | filename = Fexpand_file_name (filename, Qnil); |
32f4334d | 2104 | |
49307295 | 2105 | handler = Ffind_file_name_handler (filename, Qdelete_file); |
32f4334d | 2106 | if (!NILP (handler)) |
f5783df3 | 2107 | return call3 (handler, Qdelete_file, filename, trash); |
32f4334d | 2108 | |
f1a5d776 | 2109 | if (delete_by_moving_to_trash && !NILP (trash)) |
6cf29fe8 JR |
2110 | return call1 (Qmove_file_to_trash, filename); |
2111 | ||
b1d1b865 RS |
2112 | encoded_file = ENCODE_FILE (filename); |
2113 | ||
d5db4077 | 2114 | if (0 > unlink (SDATA (encoded_file))) |
a9f2aeae | 2115 | report_file_error ("Removing old name", list1 (filename)); |
8a9b0da9 | 2116 | return Qnil; |
570d7624 JB |
2117 | } |
2118 | ||
385b6cc7 | 2119 | static Lisp_Object |
971de7fb | 2120 | internal_delete_file_1 (Lisp_Object ignore) |
385b6cc7 RS |
2121 | { |
2122 | return Qt; | |
2123 | } | |
2124 | ||
53967e09 | 2125 | /* Delete file FILENAME, returning 1 if successful and 0 if failed. |
f1a5d776 | 2126 | This ignores `delete-by-moving-to-trash'. */ |
385b6cc7 RS |
2127 | |
2128 | int | |
f1a5d776 | 2129 | internal_delete_file (Lisp_Object filename) |
385b6cc7 | 2130 | { |
a3911e8c | 2131 | Lisp_Object tem; |
53967e09 | 2132 | |
f1a5d776 | 2133 | tem = internal_condition_case_2 (Fdelete_file, filename, Qnil, |
a3911e8c KR |
2134 | Qt, internal_delete_file_1); |
2135 | return NILP (tem); | |
385b6cc7 RS |
2136 | } |
2137 | \f | |
570d7624 | 2138 | DEFUN ("rename-file", Frename_file, Srename_file, 2, 3, |
7c0f6118 | 2139 | "fRename file: \nGRename %s to file: \np", |
a4e03fe5 | 2140 | doc: /* Rename FILE as NEWNAME. Both args must be strings. |
8c1a1077 PJ |
2141 | If file has names other than FILE, it continues to have those names. |
2142 | Signals a `file-already-exists' error if a file NEWNAME already exists | |
2143 | unless optional third argument OK-IF-ALREADY-EXISTS is non-nil. | |
2144 | A number as third arg means request confirmation if NEWNAME already exists. | |
2145 | This is what happens in interactive use with M-x. */) | |
5842a27b | 2146 | (Lisp_Object file, Lisp_Object newname, Lisp_Object ok_if_already_exists) |
570d7624 | 2147 | { |
32f4334d | 2148 | Lisp_Object handler; |
f72b5416 JD |
2149 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5; |
2150 | Lisp_Object encoded_file, encoded_newname, symlink_target; | |
570d7624 | 2151 | |
f72b5416 JD |
2152 | symlink_target = encoded_file = encoded_newname = Qnil; |
2153 | GCPRO5 (file, newname, encoded_file, encoded_newname, symlink_target); | |
b7826503 PJ |
2154 | CHECK_STRING (file); |
2155 | CHECK_STRING (newname); | |
3b7f6e60 | 2156 | file = Fexpand_file_name (file, Qnil); |
1ffc5c90 | 2157 | |
f83caf70 EZ |
2158 | if ((!NILP (Ffile_directory_p (newname))) |
2159 | #ifdef DOS_NT | |
2160 | /* If the file names are identical but for the case, | |
2161 | don't attempt to move directory to itself. */ | |
2162 | && (NILP (Fstring_equal (Fdowncase (file), Fdowncase (newname)))) | |
2163 | #endif | |
2164 | ) | |
8719abec CY |
2165 | { |
2166 | Lisp_Object fname = NILP (Ffile_directory_p (file)) | |
2167 | ? file : Fdirectory_file_name (file); | |
2168 | newname = Fexpand_file_name (Ffile_name_nondirectory (fname), newname); | |
2169 | } | |
1ffc5c90 RS |
2170 | else |
2171 | newname = Fexpand_file_name (newname, Qnil); | |
32f4334d RS |
2172 | |
2173 | /* If the file name has special constructs in it, | |
2174 | call the corresponding file handler. */ | |
3b7f6e60 | 2175 | handler = Ffind_file_name_handler (file, Qrename_file); |
51cf6d37 | 2176 | if (NILP (handler)) |
49307295 | 2177 | handler = Ffind_file_name_handler (newname, Qrename_file); |
32f4334d | 2178 | if (!NILP (handler)) |
36712b0a | 2179 | RETURN_UNGCPRO (call4 (handler, Qrename_file, |
3b7f6e60 | 2180 | file, newname, ok_if_already_exists)); |
32f4334d | 2181 | |
b1d1b865 RS |
2182 | encoded_file = ENCODE_FILE (file); |
2183 | encoded_newname = ENCODE_FILE (newname); | |
2184 | ||
bc77278f EZ |
2185 | #ifdef DOS_NT |
2186 | /* If the file names are identical but for the case, don't ask for | |
2187 | confirmation: they simply want to change the letter-case of the | |
2188 | file name. */ | |
2189 | if (NILP (Fstring_equal (Fdowncase (file), Fdowncase (newname)))) | |
2190 | #endif | |
265a9e55 | 2191 | if (NILP (ok_if_already_exists) |
93c30b5f | 2192 | || INTEGERP (ok_if_already_exists)) |
2f868094 | 2193 | barf_or_query_if_file_exists (newname, "rename to it", |
b8b29dc9 | 2194 | INTEGERP (ok_if_already_exists), 0, 0); |
d5db4077 | 2195 | if (0 > rename (SDATA (encoded_file), SDATA (encoded_newname))) |
570d7624 JB |
2196 | { |
2197 | if (errno == EXDEV) | |
2198 | { | |
6bddfc97 | 2199 | int count; |
440c7d00 | 2200 | #ifdef S_IFLNK |
f72b5416 | 2201 | symlink_target = Ffile_symlink_p (file); |
440c7d00 JD |
2202 | if (! NILP (symlink_target)) |
2203 | Fmake_symbolic_link (symlink_target, newname, | |
f59abab9 | 2204 | NILP (ok_if_already_exists) ? Qnil : Qt); |
440c7d00 JD |
2205 | else |
2206 | #endif | |
b242dbfc | 2207 | if (!NILP (Ffile_directory_p (file))) |
8719abec CY |
2208 | call4 (Qcopy_directory, file, newname, Qt, Qnil); |
2209 | else | |
2210 | /* We have already prompted if it was an integer, so don't | |
2211 | have copy-file prompt again. */ | |
586702ce | 2212 | Fcopy_file (file, newname, |
586702ce | 2213 | NILP (ok_if_already_exists) ? Qnil : Qt, |
574c05e2 | 2214 | Qt, Qt, Qt); |
d550c425 | 2215 | |
6bddfc97 | 2216 | count = SPECPDL_INDEX (); |
d2b66acf | 2217 | specbind (Qdelete_by_moving_to_trash, Qnil); |
8fab2362 CY |
2218 | |
2219 | if (!NILP (Ffile_directory_p (file)) | |
2220 | #ifdef S_IFLNK | |
2221 | && NILP (symlink_target) | |
2222 | #endif | |
2223 | ) | |
8719abec CY |
2224 | call2 (Qdelete_directory, file, Qt); |
2225 | else | |
f1a5d776 | 2226 | Fdelete_file (file, Qnil); |
6bddfc97 | 2227 | unbind_to (count, Qnil); |
570d7624 JB |
2228 | } |
2229 | else | |
a9f2aeae | 2230 | report_file_error ("Renaming", list2 (file, newname)); |
570d7624 JB |
2231 | } |
2232 | UNGCPRO; | |
2233 | return Qnil; | |
2234 | } | |
2235 | ||
2236 | DEFUN ("add-name-to-file", Fadd_name_to_file, Sadd_name_to_file, 2, 3, | |
7c0f6118 | 2237 | "fAdd name to file: \nGName to add to %s: \np", |
a4e03fe5 | 2238 | doc: /* Give FILE additional name NEWNAME. Both args must be strings. |
8c1a1077 PJ |
2239 | Signals a `file-already-exists' error if a file NEWNAME already exists |
2240 | unless optional third argument OK-IF-ALREADY-EXISTS is non-nil. | |
2241 | A number as third arg means request confirmation if NEWNAME already exists. | |
2242 | This is what happens in interactive use with M-x. */) | |
5842a27b | 2243 | (Lisp_Object file, Lisp_Object newname, Lisp_Object ok_if_already_exists) |
570d7624 | 2244 | { |
32f4334d | 2245 | Lisp_Object handler; |
b1d1b865 RS |
2246 | Lisp_Object encoded_file, encoded_newname; |
2247 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; | |
570d7624 | 2248 | |
b1d1b865 RS |
2249 | GCPRO4 (file, newname, encoded_file, encoded_newname); |
2250 | encoded_file = encoded_newname = Qnil; | |
b7826503 PJ |
2251 | CHECK_STRING (file); |
2252 | CHECK_STRING (newname); | |
3b7f6e60 | 2253 | file = Fexpand_file_name (file, Qnil); |
1ffc5c90 RS |
2254 | |
2255 | if (!NILP (Ffile_directory_p (newname))) | |
2256 | newname = Fexpand_file_name (Ffile_name_nondirectory (file), newname); | |
2257 | else | |
2258 | newname = Fexpand_file_name (newname, Qnil); | |
32f4334d RS |
2259 | |
2260 | /* If the file name has special constructs in it, | |
2261 | call the corresponding file handler. */ | |
3b7f6e60 | 2262 | handler = Ffind_file_name_handler (file, Qadd_name_to_file); |
32f4334d | 2263 | if (!NILP (handler)) |
3b7f6e60 | 2264 | RETURN_UNGCPRO (call4 (handler, Qadd_name_to_file, file, |
36712b0a | 2265 | newname, ok_if_already_exists)); |
32f4334d | 2266 | |
adc6741c RS |
2267 | /* If the new name has special constructs in it, |
2268 | call the corresponding file handler. */ | |
2269 | handler = Ffind_file_name_handler (newname, Qadd_name_to_file); | |
2270 | if (!NILP (handler)) | |
3b7f6e60 | 2271 | RETURN_UNGCPRO (call4 (handler, Qadd_name_to_file, file, |
adc6741c RS |
2272 | newname, ok_if_already_exists)); |
2273 | ||
b1d1b865 RS |
2274 | encoded_file = ENCODE_FILE (file); |
2275 | encoded_newname = ENCODE_FILE (newname); | |
2276 | ||
265a9e55 | 2277 | if (NILP (ok_if_already_exists) |
93c30b5f | 2278 | || INTEGERP (ok_if_already_exists)) |
2f868094 | 2279 | barf_or_query_if_file_exists (newname, "make it a new name", |
b8b29dc9 | 2280 | INTEGERP (ok_if_already_exists), 0, 0); |
5e570b75 | 2281 | |
d5db4077 KR |
2282 | unlink (SDATA (newname)); |
2283 | if (0 > link (SDATA (encoded_file), SDATA (encoded_newname))) | |
a9f2aeae | 2284 | report_file_error ("Adding new name", list2 (file, newname)); |
570d7624 JB |
2285 | |
2286 | UNGCPRO; | |
2287 | return Qnil; | |
2288 | } | |
2289 | ||
570d7624 | 2290 | DEFUN ("make-symbolic-link", Fmake_symbolic_link, Smake_symbolic_link, 2, 3, |
7c0f6118 | 2291 | "FMake symbolic link to file: \nGMake symbolic link to file %s: \np", |
68780e2a RS |
2292 | doc: /* Make a symbolic link to FILENAME, named LINKNAME. |
2293 | Both args must be strings. | |
8c1a1077 PJ |
2294 | Signals a `file-already-exists' error if a file LINKNAME already exists |
2295 | unless optional third argument OK-IF-ALREADY-EXISTS is non-nil. | |
2296 | A number as third arg means request confirmation if LINKNAME already exists. | |
2297 | This happens for interactive use with M-x. */) | |
5842a27b | 2298 | (Lisp_Object filename, Lisp_Object linkname, Lisp_Object ok_if_already_exists) |
570d7624 | 2299 | { |
32f4334d | 2300 | Lisp_Object handler; |
b1d1b865 RS |
2301 | Lisp_Object encoded_filename, encoded_linkname; |
2302 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; | |
570d7624 | 2303 | |
b1d1b865 RS |
2304 | GCPRO4 (filename, linkname, encoded_filename, encoded_linkname); |
2305 | encoded_filename = encoded_linkname = Qnil; | |
b7826503 PJ |
2306 | CHECK_STRING (filename); |
2307 | CHECK_STRING (linkname); | |
d9bc1c99 RS |
2308 | /* If the link target has a ~, we must expand it to get |
2309 | a truly valid file name. Otherwise, do not expand; | |
2310 | we want to permit links to relative file names. */ | |
d5db4077 | 2311 | if (SREF (filename, 0) == '~') |
d9bc1c99 | 2312 | filename = Fexpand_file_name (filename, Qnil); |
1ffc5c90 RS |
2313 | |
2314 | if (!NILP (Ffile_directory_p (linkname))) | |
dac24db4 | 2315 | linkname = Fexpand_file_name (Ffile_name_nondirectory (filename), linkname); |
1ffc5c90 RS |
2316 | else |
2317 | linkname = Fexpand_file_name (linkname, Qnil); | |
32f4334d RS |
2318 | |
2319 | /* If the file name has special constructs in it, | |
2320 | call the corresponding file handler. */ | |
49307295 | 2321 | handler = Ffind_file_name_handler (filename, Qmake_symbolic_link); |
32f4334d | 2322 | if (!NILP (handler)) |
36712b0a KH |
2323 | RETURN_UNGCPRO (call4 (handler, Qmake_symbolic_link, filename, |
2324 | linkname, ok_if_already_exists)); | |
32f4334d | 2325 | |
adc6741c RS |
2326 | /* If the new link name has special constructs in it, |
2327 | call the corresponding file handler. */ | |
2328 | handler = Ffind_file_name_handler (linkname, Qmake_symbolic_link); | |
2329 | if (!NILP (handler)) | |
2330 | RETURN_UNGCPRO (call4 (handler, Qmake_symbolic_link, filename, | |
2331 | linkname, ok_if_already_exists)); | |
2332 | ||
e89b536d | 2333 | #ifdef S_IFLNK |
b1d1b865 RS |
2334 | encoded_filename = ENCODE_FILE (filename); |
2335 | encoded_linkname = ENCODE_FILE (linkname); | |
2336 | ||
265a9e55 | 2337 | if (NILP (ok_if_already_exists) |
93c30b5f | 2338 | || INTEGERP (ok_if_already_exists)) |
2f868094 | 2339 | barf_or_query_if_file_exists (linkname, "make it a link", |
b8b29dc9 | 2340 | INTEGERP (ok_if_already_exists), 0, 0); |
d5db4077 KR |
2341 | if (0 > symlink (SDATA (encoded_filename), |
2342 | SDATA (encoded_linkname))) | |
570d7624 JB |
2343 | { |
2344 | /* If we didn't complain already, silently delete existing file. */ | |
2345 | if (errno == EEXIST) | |
2346 | { | |
d5db4077 KR |
2347 | unlink (SDATA (encoded_linkname)); |
2348 | if (0 <= symlink (SDATA (encoded_filename), | |
2349 | SDATA (encoded_linkname))) | |
1a04498e KH |
2350 | { |
2351 | UNGCPRO; | |
2352 | return Qnil; | |
2353 | } | |
570d7624 JB |
2354 | } |
2355 | ||
a9f2aeae | 2356 | report_file_error ("Making symbolic link", list2 (filename, linkname)); |
570d7624 JB |
2357 | } |
2358 | UNGCPRO; | |
2359 | return Qnil; | |
e89b536d MA |
2360 | |
2361 | #else | |
2362 | UNGCPRO; | |
2363 | xsignal1 (Qfile_error, build_string ("Symbolic links are not supported")); | |
2364 | ||
570d7624 | 2365 | #endif /* S_IFLNK */ |
e89b536d | 2366 | } |
570d7624 | 2367 | |
570d7624 JB |
2368 | \f |
2369 | DEFUN ("file-name-absolute-p", Ffile_name_absolute_p, Sfile_name_absolute_p, | |
2370 | 1, 1, 0, | |
8c1a1077 PJ |
2371 | doc: /* Return t if file FILENAME specifies an absolute file name. |
2372 | On Unix, this is a name starting with a `/' or a `~'. */) | |
5842a27b | 2373 | (Lisp_Object filename) |
570d7624 | 2374 | { |
b7826503 | 2375 | CHECK_STRING (filename); |
c70a4df6 | 2376 | return file_name_absolute_p (SDATA (filename)) ? Qt : Qnil; |
570d7624 | 2377 | } |
3beeedfe RS |
2378 | \f |
2379 | /* Return nonzero if file FILENAME exists and can be executed. */ | |
2380 | ||
2381 | static int | |
971de7fb | 2382 | check_executable (char *filename) |
3beeedfe | 2383 | { |
3be3c08e RS |
2384 | #ifdef DOS_NT |
2385 | int len = strlen (filename); | |
2386 | char *suffix; | |
2387 | struct stat st; | |
2388 | if (stat (filename, &st) < 0) | |
2389 | return 0; | |
199607e4 | 2390 | return ((st.st_mode & S_IEXEC) != 0); |
3be3c08e | 2391 | #else /* not DOS_NT */ |
de0be7dd RS |
2392 | #ifdef HAVE_EUIDACCESS |
2393 | return (euidaccess (filename, 1) >= 0); | |
3beeedfe RS |
2394 | #else |
2395 | /* Access isn't quite right because it uses the real uid | |
2396 | and we really want to test with the effective uid. | |
2397 | But Unix doesn't give us a right way to do it. */ | |
2398 | return (access (filename, 1) >= 0); | |
2399 | #endif | |
3be3c08e | 2400 | #endif /* not DOS_NT */ |
3beeedfe RS |
2401 | } |
2402 | ||
2403 | /* Return nonzero if file FILENAME exists and can be written. */ | |
2404 | ||
2405 | static int | |
8ea90aa3 | 2406 | check_writable (const char *filename) |
3beeedfe | 2407 | { |
3be3c08e RS |
2408 | #ifdef MSDOS |
2409 | struct stat st; | |
2410 | if (stat (filename, &st) < 0) | |
2411 | return 0; | |
2412 | return (st.st_mode & S_IWRITE || (st.st_mode & S_IFMT) == S_IFDIR); | |
2413 | #else /* not MSDOS */ | |
41f3fb38 KH |
2414 | #ifdef HAVE_EUIDACCESS |
2415 | return (euidaccess (filename, 2) >= 0); | |
3beeedfe RS |
2416 | #else |
2417 | /* Access isn't quite right because it uses the real uid | |
2418 | and we really want to test with the effective uid. | |
2419 | But Unix doesn't give us a right way to do it. | |
2420 | Opening with O_WRONLY could work for an ordinary file, | |
2421 | but would lose for directories. */ | |
2422 | return (access (filename, 2) >= 0); | |
2423 | #endif | |
3be3c08e | 2424 | #endif /* not MSDOS */ |
3beeedfe | 2425 | } |
570d7624 JB |
2426 | |
2427 | DEFUN ("file-exists-p", Ffile_exists_p, Sfile_exists_p, 1, 1, 0, | |
68780e2a RS |
2428 | doc: /* Return t if file FILENAME exists (whether or not you can read it.) |
2429 | See also `file-readable-p' and `file-attributes'. | |
2430 | This returns nil for a symlink to a nonexistent file. | |
2431 | Use `file-symlink-p' to test for such links. */) | |
5842a27b | 2432 | (Lisp_Object filename) |
570d7624 | 2433 | { |
199607e4 | 2434 | Lisp_Object absname; |
32f4334d | 2435 | Lisp_Object handler; |
4018b5ef | 2436 | struct stat statbuf; |
570d7624 | 2437 | |
b7826503 | 2438 | CHECK_STRING (filename); |
199607e4 | 2439 | absname = Fexpand_file_name (filename, Qnil); |
32f4334d RS |
2440 | |
2441 | /* If the file name has special constructs in it, | |
2442 | call the corresponding file handler. */ | |
199607e4 | 2443 | handler = Ffind_file_name_handler (absname, Qfile_exists_p); |
32f4334d | 2444 | if (!NILP (handler)) |
199607e4 | 2445 | return call2 (handler, Qfile_exists_p, absname); |
32f4334d | 2446 | |
b1d1b865 RS |
2447 | absname = ENCODE_FILE (absname); |
2448 | ||
d5db4077 | 2449 | return (stat (SDATA (absname), &statbuf) >= 0) ? Qt : Qnil; |
570d7624 JB |
2450 | } |
2451 | ||
2452 | DEFUN ("file-executable-p", Ffile_executable_p, Sfile_executable_p, 1, 1, 0, | |
8c1a1077 PJ |
2453 | doc: /* Return t if FILENAME can be executed by you. |
2454 | For a directory, this means you can access files in that directory. */) | |
5842a27b | 2455 | (Lisp_Object filename) |
570d7624 | 2456 | { |
199607e4 | 2457 | Lisp_Object absname; |
32f4334d | 2458 | Lisp_Object handler; |
570d7624 | 2459 | |
b7826503 | 2460 | CHECK_STRING (filename); |
199607e4 | 2461 | absname = Fexpand_file_name (filename, Qnil); |
32f4334d RS |
2462 | |
2463 | /* If the file name has special constructs in it, | |
2464 | call the corresponding file handler. */ | |
199607e4 | 2465 | handler = Ffind_file_name_handler (absname, Qfile_executable_p); |
32f4334d | 2466 | if (!NILP (handler)) |
199607e4 | 2467 | return call2 (handler, Qfile_executable_p, absname); |
32f4334d | 2468 | |
b1d1b865 RS |
2469 | absname = ENCODE_FILE (absname); |
2470 | ||
d5db4077 | 2471 | return (check_executable (SDATA (absname)) ? Qt : Qnil); |
570d7624 JB |
2472 | } |
2473 | ||
2474 | DEFUN ("file-readable-p", Ffile_readable_p, Sfile_readable_p, 1, 1, 0, | |
8c1a1077 PJ |
2475 | doc: /* Return t if file FILENAME exists and you can read it. |
2476 | See also `file-exists-p' and `file-attributes'. */) | |
5842a27b | 2477 | (Lisp_Object filename) |
570d7624 | 2478 | { |
199607e4 | 2479 | Lisp_Object absname; |
32f4334d | 2480 | Lisp_Object handler; |
4018b5ef | 2481 | int desc; |
bb369dc6 RS |
2482 | int flags; |
2483 | struct stat statbuf; | |
570d7624 | 2484 | |
b7826503 | 2485 | CHECK_STRING (filename); |
199607e4 | 2486 | absname = Fexpand_file_name (filename, Qnil); |
32f4334d RS |
2487 | |
2488 | /* If the file name has special constructs in it, | |
2489 | call the corresponding file handler. */ | |
199607e4 | 2490 | handler = Ffind_file_name_handler (absname, Qfile_readable_p); |
32f4334d | 2491 | if (!NILP (handler)) |
199607e4 | 2492 | return call2 (handler, Qfile_readable_p, absname); |
32f4334d | 2493 | |
b1d1b865 RS |
2494 | absname = ENCODE_FILE (absname); |
2495 | ||
fb4c6c96 AC |
2496 | #if defined(DOS_NT) || defined(macintosh) |
2497 | /* Under MS-DOS, Windows, and Macintosh, open does not work for | |
2498 | directories. */ | |
d5db4077 | 2499 | if (access (SDATA (absname), 0) == 0) |
a8a7d065 RS |
2500 | return Qt; |
2501 | return Qnil; | |
fb4c6c96 | 2502 | #else /* not DOS_NT and not macintosh */ |
bb369dc6 RS |
2503 | flags = O_RDONLY; |
2504 | #if defined (S_ISFIFO) && defined (O_NONBLOCK) | |
2505 | /* Opening a fifo without O_NONBLOCK can wait. | |
2506 | We don't want to wait. But we don't want to mess wth O_NONBLOCK | |
2507 | except in the case of a fifo, on a system which handles it. */ | |
d5db4077 | 2508 | desc = stat (SDATA (absname), &statbuf); |
bb369dc6 RS |
2509 | if (desc < 0) |
2510 | return Qnil; | |
2511 | if (S_ISFIFO (statbuf.st_mode)) | |
2512 | flags |= O_NONBLOCK; | |
2513 | #endif | |
d5db4077 | 2514 | desc = emacs_open (SDATA (absname), flags, 0); |
4018b5ef RS |
2515 | if (desc < 0) |
2516 | return Qnil; | |
68c45bf0 | 2517 | emacs_close (desc); |
4018b5ef | 2518 | return Qt; |
fb4c6c96 | 2519 | #endif /* not DOS_NT and not macintosh */ |
570d7624 JB |
2520 | } |
2521 | ||
f793dc6c RS |
2522 | /* Having this before file-symlink-p mysteriously caused it to be forgotten |
2523 | on the RT/PC. */ | |
2524 | DEFUN ("file-writable-p", Ffile_writable_p, Sfile_writable_p, 1, 1, 0, | |
8c1a1077 | 2525 | doc: /* Return t if file FILENAME can be written or created by you. */) |
5842a27b | 2526 | (Lisp_Object filename) |
f793dc6c | 2527 | { |
b1d1b865 | 2528 | Lisp_Object absname, dir, encoded; |
f793dc6c RS |
2529 | Lisp_Object handler; |
2530 | struct stat statbuf; | |
2531 | ||
b7826503 | 2532 | CHECK_STRING (filename); |
199607e4 | 2533 | absname = Fexpand_file_name (filename, Qnil); |
f793dc6c RS |
2534 | |
2535 | /* If the file name has special constructs in it, | |
2536 | call the corresponding file handler. */ | |
199607e4 | 2537 | handler = Ffind_file_name_handler (absname, Qfile_writable_p); |
f793dc6c | 2538 | if (!NILP (handler)) |
199607e4 | 2539 | return call2 (handler, Qfile_writable_p, absname); |
f793dc6c | 2540 | |
b1d1b865 | 2541 | encoded = ENCODE_FILE (absname); |
d5db4077 KR |
2542 | if (stat (SDATA (encoded), &statbuf) >= 0) |
2543 | return (check_writable (SDATA (encoded)) | |
f793dc6c | 2544 | ? Qt : Qnil); |
b1d1b865 | 2545 | |
199607e4 | 2546 | dir = Ffile_name_directory (absname); |
f793dc6c RS |
2547 | #ifdef MSDOS |
2548 | if (!NILP (dir)) | |
2549 | dir = Fdirectory_file_name (dir); | |
2550 | #endif /* MSDOS */ | |
b1d1b865 RS |
2551 | |
2552 | dir = ENCODE_FILE (dir); | |
e3e8a75a GM |
2553 | #ifdef WINDOWSNT |
2554 | /* The read-only attribute of the parent directory doesn't affect | |
2555 | whether a file or directory can be created within it. Some day we | |
2556 | should check ACLs though, which do affect this. */ | |
d5db4077 | 2557 | if (stat (SDATA (dir), &statbuf) < 0) |
e3e8a75a GM |
2558 | return Qnil; |
2559 | return (statbuf.st_mode & S_IFMT) == S_IFDIR ? Qt : Qnil; | |
2560 | #else | |
51b59d79 | 2561 | return (check_writable (!NILP (dir) ? SSDATA (dir) : "") |
f793dc6c | 2562 | ? Qt : Qnil); |
e3e8a75a | 2563 | #endif |
f793dc6c RS |
2564 | } |
2565 | \f | |
1f8653eb | 2566 | DEFUN ("access-file", Faccess_file, Saccess_file, 2, 2, 0, |
8c1a1077 PJ |
2567 | doc: /* Access file FILENAME, and get an error if that does not work. |
2568 | The second argument STRING is used in the error message. | |
a4e03fe5 | 2569 | If there is no error, returns nil. */) |
5842a27b | 2570 | (Lisp_Object filename, Lisp_Object string) |
1f8653eb | 2571 | { |
49475635 | 2572 | Lisp_Object handler, encoded_filename, absname; |
1f8653eb RS |
2573 | int fd; |
2574 | ||
b7826503 | 2575 | CHECK_STRING (filename); |
49475635 EZ |
2576 | absname = Fexpand_file_name (filename, Qnil); |
2577 | ||
b7826503 | 2578 | CHECK_STRING (string); |
1f8653eb RS |
2579 | |
2580 | /* If the file name has special constructs in it, | |
2581 | call the corresponding file handler. */ | |
49475635 | 2582 | handler = Ffind_file_name_handler (absname, Qaccess_file); |
1f8653eb | 2583 | if (!NILP (handler)) |
49475635 | 2584 | return call3 (handler, Qaccess_file, absname, string); |
1f8653eb | 2585 | |
49475635 | 2586 | encoded_filename = ENCODE_FILE (absname); |
b1d1b865 | 2587 | |
d5db4077 | 2588 | fd = emacs_open (SDATA (encoded_filename), O_RDONLY, 0); |
1f8653eb | 2589 | if (fd < 0) |
d5db4077 | 2590 | report_file_error (SDATA (string), Fcons (filename, Qnil)); |
68c45bf0 | 2591 | emacs_close (fd); |
1f8653eb RS |
2592 | |
2593 | return Qnil; | |
2594 | } | |
2595 | \f | |
570d7624 | 2596 | DEFUN ("file-symlink-p", Ffile_symlink_p, Sfile_symlink_p, 1, 1, 0, |
8c1a1077 | 2597 | doc: /* Return non-nil if file FILENAME is the name of a symbolic link. |
1c353c74 | 2598 | The value is the link target, as a string. |
68780e2a RS |
2599 | Otherwise it returns nil. |
2600 | ||
2601 | This function returns t when given the name of a symlink that | |
2602 | points to a nonexistent file. */) | |
5842a27b | 2603 | (Lisp_Object filename) |
570d7624 | 2604 | { |
32f4334d | 2605 | Lisp_Object handler; |
570d7624 | 2606 | |
b7826503 | 2607 | CHECK_STRING (filename); |
570d7624 JB |
2608 | filename = Fexpand_file_name (filename, Qnil); |
2609 | ||
32f4334d RS |
2610 | /* If the file name has special constructs in it, |
2611 | call the corresponding file handler. */ | |
49307295 | 2612 | handler = Ffind_file_name_handler (filename, Qfile_symlink_p); |
32f4334d RS |
2613 | if (!NILP (handler)) |
2614 | return call2 (handler, Qfile_symlink_p, filename); | |
2615 | ||
5adcec23 JR |
2616 | #ifdef S_IFLNK |
2617 | { | |
2618 | char *buf; | |
2619 | int bufsize; | |
2620 | int valsize; | |
2621 | Lisp_Object val; | |
2622 | ||
b1d1b865 RS |
2623 | filename = ENCODE_FILE (filename); |
2624 | ||
81c3310d GM |
2625 | bufsize = 50; |
2626 | buf = NULL; | |
2627 | do | |
570d7624 | 2628 | { |
81c3310d GM |
2629 | bufsize *= 2; |
2630 | buf = (char *) xrealloc (buf, bufsize); | |
72af86bd | 2631 | memset (buf, 0, bufsize); |
efdc16c9 | 2632 | |
81c3310d | 2633 | errno = 0; |
d5db4077 | 2634 | valsize = readlink (SDATA (filename), buf, bufsize); |
bcdd93b3 GM |
2635 | if (valsize == -1) |
2636 | { | |
81c3310d GM |
2637 | #ifdef ERANGE |
2638 | /* HP-UX reports ERANGE if buffer is too small. */ | |
bcdd93b3 GM |
2639 | if (errno == ERANGE) |
2640 | valsize = bufsize; | |
2641 | else | |
81c3310d | 2642 | #endif |
bcdd93b3 GM |
2643 | { |
2644 | xfree (buf); | |
2645 | return Qnil; | |
2646 | } | |
81c3310d | 2647 | } |
570d7624 | 2648 | } |
81c3310d | 2649 | while (valsize >= bufsize); |
efdc16c9 | 2650 | |
570d7624 | 2651 | val = make_string (buf, valsize); |
8966b757 | 2652 | if (buf[0] == '/' && strchr (buf, ':')) |
69ac1891 | 2653 | val = concat2 (build_string ("/:"), val); |
9ac0d9e0 | 2654 | xfree (buf); |
cd913586 KH |
2655 | val = DECODE_FILE (val); |
2656 | return val; | |
5adcec23 | 2657 | } |
570d7624 JB |
2658 | #else /* not S_IFLNK */ |
2659 | return Qnil; | |
2660 | #endif /* not S_IFLNK */ | |
2661 | } | |
2662 | ||
570d7624 | 2663 | DEFUN ("file-directory-p", Ffile_directory_p, Sfile_directory_p, 1, 1, 0, |
8c1a1077 PJ |
2664 | doc: /* Return t if FILENAME names an existing directory. |
2665 | Symbolic links to directories count as directories. | |
2666 | See `file-symlink-p' to distinguish symlinks. */) | |
5842a27b | 2667 | (Lisp_Object filename) |
570d7624 | 2668 | { |
199607e4 | 2669 | register Lisp_Object absname; |
570d7624 | 2670 | struct stat st; |
32f4334d | 2671 | Lisp_Object handler; |
570d7624 | 2672 | |
199607e4 | 2673 | absname = expand_and_dir_to_file (filename, current_buffer->directory); |
570d7624 | 2674 | |
32f4334d RS |
2675 | /* If the file name has special constructs in it, |
2676 | call the corresponding file handler. */ | |
199607e4 | 2677 | handler = Ffind_file_name_handler (absname, Qfile_directory_p); |
32f4334d | 2678 | if (!NILP (handler)) |
199607e4 | 2679 | return call2 (handler, Qfile_directory_p, absname); |
32f4334d | 2680 | |
b1d1b865 RS |
2681 | absname = ENCODE_FILE (absname); |
2682 | ||
d5db4077 | 2683 | if (stat (SDATA (absname), &st) < 0) |
570d7624 JB |
2684 | return Qnil; |
2685 | return (st.st_mode & S_IFMT) == S_IFDIR ? Qt : Qnil; | |
2686 | } | |
2687 | ||
b72dea2a | 2688 | DEFUN ("file-accessible-directory-p", Ffile_accessible_directory_p, Sfile_accessible_directory_p, 1, 1, 0, |
e385ec41 RS |
2689 | doc: /* Return t if file FILENAME names a directory you can open. |
2690 | For the value to be t, FILENAME must specify the name of a directory as a file, | |
2691 | and the directory must allow you to open files in it. In order to use a | |
8c1a1077 PJ |
2692 | directory as a buffer's current directory, this predicate must return true. |
2693 | A directory name spec may be given instead; then the value is t | |
2694 | if the directory so specified exists and really is a readable and | |
2695 | searchable directory. */) | |
5842a27b | 2696 | (Lisp_Object filename) |
b72dea2a | 2697 | { |
32f4334d | 2698 | Lisp_Object handler; |
1a04498e | 2699 | int tem; |
d26859eb | 2700 | struct gcpro gcpro1; |
32f4334d RS |
2701 | |
2702 | /* If the file name has special constructs in it, | |
2703 | call the corresponding file handler. */ | |
49307295 | 2704 | handler = Ffind_file_name_handler (filename, Qfile_accessible_directory_p); |
32f4334d RS |
2705 | if (!NILP (handler)) |
2706 | return call2 (handler, Qfile_accessible_directory_p, filename); | |
2707 | ||
d26859eb | 2708 | GCPRO1 (filename); |
1a04498e KH |
2709 | tem = (NILP (Ffile_directory_p (filename)) |
2710 | || NILP (Ffile_executable_p (filename))); | |
d26859eb | 2711 | UNGCPRO; |
1a04498e | 2712 | return tem ? Qnil : Qt; |
b72dea2a JB |
2713 | } |
2714 | ||
f793dc6c | 2715 | DEFUN ("file-regular-p", Ffile_regular_p, Sfile_regular_p, 1, 1, 0, |
19a9c3b7 LH |
2716 | doc: /* Return t if FILENAME names a regular file. |
2717 | This is the sort of file that holds an ordinary stream of data bytes. | |
2718 | Symbolic links to regular files count as regular files. | |
2719 | See `file-symlink-p' to distinguish symlinks. */) | |
5842a27b | 2720 | (Lisp_Object filename) |
f793dc6c | 2721 | { |
199607e4 | 2722 | register Lisp_Object absname; |
f793dc6c RS |
2723 | struct stat st; |
2724 | Lisp_Object handler; | |
2725 | ||
199607e4 | 2726 | absname = expand_and_dir_to_file (filename, current_buffer->directory); |
f793dc6c RS |
2727 | |
2728 | /* If the file name has special constructs in it, | |
2729 | call the corresponding file handler. */ | |
199607e4 | 2730 | handler = Ffind_file_name_handler (absname, Qfile_regular_p); |
f793dc6c | 2731 | if (!NILP (handler)) |
199607e4 | 2732 | return call2 (handler, Qfile_regular_p, absname); |
f793dc6c | 2733 | |
b1d1b865 RS |
2734 | absname = ENCODE_FILE (absname); |
2735 | ||
c1c4693e RS |
2736 | #ifdef WINDOWSNT |
2737 | { | |
2738 | int result; | |
2739 | Lisp_Object tem = Vw32_get_true_file_attributes; | |
2740 | ||
2741 | /* Tell stat to use expensive method to get accurate info. */ | |
2742 | Vw32_get_true_file_attributes = Qt; | |
d5db4077 | 2743 | result = stat (SDATA (absname), &st); |
c1c4693e RS |
2744 | Vw32_get_true_file_attributes = tem; |
2745 | ||
2746 | if (result < 0) | |
2747 | return Qnil; | |
2748 | return (st.st_mode & S_IFMT) == S_IFREG ? Qt : Qnil; | |
2749 | } | |
2750 | #else | |
d5db4077 | 2751 | if (stat (SDATA (absname), &st) < 0) |
f793dc6c RS |
2752 | return Qnil; |
2753 | return (st.st_mode & S_IFMT) == S_IFREG ? Qt : Qnil; | |
c1c4693e | 2754 | #endif |
f793dc6c RS |
2755 | } |
2756 | \f | |
574c05e2 KK |
2757 | DEFUN ("file-selinux-context", Ffile_selinux_context, |
2758 | Sfile_selinux_context, 1, 1, 0, | |
2759 | doc: /* Return SELinux context of file named FILENAME, | |
2760 | as a list ("user", "role", "type", "range"). Return (nil, nil, nil, nil) | |
2761 | if file does not exist, is not accessible, or SELinux is disabled */) | |
5842a27b | 2762 | (Lisp_Object filename) |
574c05e2 KK |
2763 | { |
2764 | Lisp_Object absname; | |
2765 | Lisp_Object values[4]; | |
2766 | Lisp_Object handler; | |
2767 | #if HAVE_LIBSELINUX | |
2768 | security_context_t con; | |
2769 | int conlength; | |
2770 | context_t context; | |
2771 | #endif | |
2772 | ||
2773 | absname = expand_and_dir_to_file (filename, current_buffer->directory); | |
2774 | ||
2775 | /* If the file name has special constructs in it, | |
2776 | call the corresponding file handler. */ | |
2777 | handler = Ffind_file_name_handler (absname, Qfile_selinux_context); | |
2778 | if (!NILP (handler)) | |
2779 | return call2 (handler, Qfile_selinux_context, absname); | |
2780 | ||
2781 | absname = ENCODE_FILE (absname); | |
2782 | ||
2783 | values[0] = Qnil; | |
2784 | values[1] = Qnil; | |
2785 | values[2] = Qnil; | |
2786 | values[3] = Qnil; | |
2787 | #if HAVE_LIBSELINUX | |
2788 | if (is_selinux_enabled ()) | |
2789 | { | |
2790 | conlength = lgetfilecon (SDATA (absname), &con); | |
2791 | if (conlength > 0) | |
2792 | { | |
2793 | context = context_new (con); | |
45841e65 KK |
2794 | if (context_user_get (context)) |
2795 | values[0] = build_string (context_user_get (context)); | |
2796 | if (context_role_get (context)) | |
2797 | values[1] = build_string (context_role_get (context)); | |
2798 | if (context_type_get (context)) | |
2799 | values[2] = build_string (context_type_get (context)); | |
2800 | if (context_range_get (context)) | |
2801 | values[3] = build_string (context_range_get (context)); | |
574c05e2 KK |
2802 | context_free (context); |
2803 | } | |
2804 | if (con) | |
2805 | freecon (con); | |
2806 | } | |
2807 | #endif | |
2808 | ||
2809 | return Flist (sizeof(values) / sizeof(values[0]), values); | |
2810 | } | |
2811 | \f | |
2812 | DEFUN ("set-file-selinux-context", Fset_file_selinux_context, | |
2813 | Sset_file_selinux_context, 2, 2, 0, | |
2814 | doc: /* Set SELinux context of file named FILENAME to CONTEXT | |
2815 | as a list ("user", "role", "type", "range"). Has no effect if SELinux | |
2816 | is disabled. */) | |
5842a27b | 2817 | (Lisp_Object filename, Lisp_Object context) |
574c05e2 KK |
2818 | { |
2819 | Lisp_Object absname, encoded_absname; | |
2820 | Lisp_Object handler; | |
2821 | Lisp_Object user = CAR_SAFE (context); | |
2822 | Lisp_Object role = CAR_SAFE (CDR_SAFE (context)); | |
2823 | Lisp_Object type = CAR_SAFE (CDR_SAFE (CDR_SAFE (context))); | |
2824 | Lisp_Object range = CAR_SAFE (CDR_SAFE (CDR_SAFE (CDR_SAFE (context)))); | |
2825 | #if HAVE_LIBSELINUX | |
2826 | security_context_t con; | |
2827 | int fail, conlength; | |
2828 | context_t parsed_con; | |
2829 | #endif | |
2830 | ||
2831 | absname = Fexpand_file_name (filename, current_buffer->directory); | |
2832 | ||
2833 | /* If the file name has special constructs in it, | |
2834 | call the corresponding file handler. */ | |
2835 | handler = Ffind_file_name_handler (absname, Qset_file_selinux_context); | |
2836 | if (!NILP (handler)) | |
2837 | return call3 (handler, Qset_file_selinux_context, absname, context); | |
2838 | ||
2839 | encoded_absname = ENCODE_FILE (absname); | |
2840 | ||
2841 | #if HAVE_LIBSELINUX | |
2842 | if (is_selinux_enabled ()) | |
2843 | { | |
2844 | /* Get current file context. */ | |
2845 | conlength = lgetfilecon (SDATA (encoded_absname), &con); | |
2846 | if (conlength > 0) | |
2847 | { | |
2848 | parsed_con = context_new (con); | |
2849 | /* Change the parts defined in the parameter.*/ | |
2850 | if (STRINGP (user)) | |
2851 | { | |
2852 | if (context_user_set (parsed_con, SDATA (user))) | |
2853 | error ("Doing context_user_set"); | |
2854 | } | |
2855 | if (STRINGP (role)) | |
2856 | { | |
2857 | if (context_role_set (parsed_con, SDATA (role))) | |
2858 | error ("Doing context_role_set"); | |
2859 | } | |
2860 | if (STRINGP (type)) | |
2861 | { | |
2862 | if (context_type_set (parsed_con, SDATA (type))) | |
2863 | error ("Doing context_type_set"); | |
2864 | } | |
2865 | if (STRINGP (range)) | |
2866 | { | |
2867 | if (context_range_set (parsed_con, SDATA (range))) | |
2868 | error ("Doing context_range_set"); | |
2869 | } | |
2870 | ||
2871 | /* Set the modified context back to the file. */ | |
2872 | fail = lsetfilecon (SDATA (encoded_absname), context_str (parsed_con)); | |
2873 | if (fail) | |
2874 | report_file_error ("Doing lsetfilecon", Fcons (absname, Qnil)); | |
2875 | ||
2876 | context_free (parsed_con); | |
2877 | } | |
2878 | else | |
2879 | report_file_error("Doing lgetfilecon", Fcons (absname, Qnil)); | |
2880 | ||
2881 | if (con) | |
2882 | freecon (con); | |
2883 | } | |
2884 | #endif | |
2885 | ||
2886 | return Qnil; | |
2887 | } | |
2888 | \f | |
570d7624 | 2889 | DEFUN ("file-modes", Ffile_modes, Sfile_modes, 1, 1, 0, |
d4a42098 KS |
2890 | doc: /* Return mode bits of file named FILENAME, as an integer. |
2891 | Return nil, if file does not exist or is not accessible. */) | |
5842a27b | 2892 | (Lisp_Object filename) |
570d7624 | 2893 | { |
199607e4 | 2894 | Lisp_Object absname; |
570d7624 | 2895 | struct stat st; |
32f4334d | 2896 | Lisp_Object handler; |
570d7624 | 2897 | |
199607e4 | 2898 | absname = expand_and_dir_to_file (filename, current_buffer->directory); |
570d7624 | 2899 | |
32f4334d RS |
2900 | /* If the file name has special constructs in it, |
2901 | call the corresponding file handler. */ | |
199607e4 | 2902 | handler = Ffind_file_name_handler (absname, Qfile_modes); |
32f4334d | 2903 | if (!NILP (handler)) |
199607e4 | 2904 | return call2 (handler, Qfile_modes, absname); |
32f4334d | 2905 | |
b1d1b865 RS |
2906 | absname = ENCODE_FILE (absname); |
2907 | ||
d5db4077 | 2908 | if (stat (SDATA (absname), &st) < 0) |
570d7624 | 2909 | return Qnil; |
3ace87e3 | 2910 | |
570d7624 JB |
2911 | return make_number (st.st_mode & 07777); |
2912 | } | |
2913 | ||
09fbdf6c MC |
2914 | DEFUN ("set-file-modes", Fset_file_modes, Sset_file_modes, 2, 2, |
2915 | "(let ((file (read-file-name \"File: \"))) \ | |
2916 | (list file (read-file-modes nil file)))", | |
8c1a1077 | 2917 | doc: /* Set mode bits of file named FILENAME to MODE (an integer). |
ea429250 EZ |
2918 | Only the 12 low bits of MODE are used. |
2919 | ||
2920 | Interactively, mode bits are read by `read-file-modes', which accepts | |
712adc82 | 2921 | symbolic notation, like the `chmod' command from GNU Coreutils. */) |
5842a27b | 2922 | (Lisp_Object filename, Lisp_Object mode) |
570d7624 | 2923 | { |
b1d1b865 | 2924 | Lisp_Object absname, encoded_absname; |
32f4334d | 2925 | Lisp_Object handler; |
570d7624 | 2926 | |
199607e4 | 2927 | absname = Fexpand_file_name (filename, current_buffer->directory); |
b7826503 | 2928 | CHECK_NUMBER (mode); |
570d7624 | 2929 | |
32f4334d RS |
2930 | /* If the file name has special constructs in it, |
2931 | call the corresponding file handler. */ | |
199607e4 | 2932 | handler = Ffind_file_name_handler (absname, Qset_file_modes); |
32f4334d | 2933 | if (!NILP (handler)) |
199607e4 | 2934 | return call3 (handler, Qset_file_modes, absname, mode); |
32f4334d | 2935 | |
b1d1b865 RS |
2936 | encoded_absname = ENCODE_FILE (absname); |
2937 | ||
d5db4077 | 2938 | if (chmod (SDATA (encoded_absname), XINT (mode)) < 0) |
199607e4 | 2939 | report_file_error ("Doing chmod", Fcons (absname, Qnil)); |
570d7624 JB |
2940 | |
2941 | return Qnil; | |
2942 | } | |
2943 | ||
c24e9a53 | 2944 | DEFUN ("set-default-file-modes", Fset_default_file_modes, Sset_default_file_modes, 1, 1, 0, |
8c1a1077 PJ |
2945 | doc: /* Set the file permission bits for newly created files. |
2946 | The argument MODE should be an integer; only the low 9 bits are used. | |
2947 | This setting is inherited by subprocesses. */) | |
5842a27b | 2948 | (Lisp_Object mode) |
36a8c287 | 2949 | { |
b7826503 | 2950 | CHECK_NUMBER (mode); |
199607e4 | 2951 | |
5f85ea58 | 2952 | umask ((~ XINT (mode)) & 0777); |
36a8c287 JB |
2953 | |
2954 | return Qnil; | |
2955 | } | |
2956 | ||
c24e9a53 | 2957 | DEFUN ("default-file-modes", Fdefault_file_modes, Sdefault_file_modes, 0, 0, 0, |
8c1a1077 PJ |
2958 | doc: /* Return the default file protection for created files. |
2959 | The value is an integer. */) | |
5842a27b | 2960 | (void) |
36a8c287 | 2961 | { |
5f85ea58 RS |
2962 | int realmask; |
2963 | Lisp_Object value; | |
36a8c287 | 2964 | |
5f85ea58 RS |
2965 | realmask = umask (0); |
2966 | umask (realmask); | |
36a8c287 | 2967 | |
46283abe | 2968 | XSETINT (value, (~ realmask) & 0777); |
5f85ea58 | 2969 | return value; |
36a8c287 | 2970 | } |
819da85b | 2971 | \f |
819da85b EZ |
2972 | |
2973 | DEFUN ("set-file-times", Fset_file_times, Sset_file_times, 1, 2, 0, | |
2974 | doc: /* Set times of file FILENAME to TIME. | |
2975 | Set both access and modification times. | |
2976 | Return t on success, else nil. | |
2977 | Use the current time if TIME is nil. TIME is in the format of | |
2978 | `current-time'. */) | |
5842a27b | 2979 | (Lisp_Object filename, Lisp_Object time) |
819da85b EZ |
2980 | { |
2981 | Lisp_Object absname, encoded_absname; | |
2982 | Lisp_Object handler; | |
2983 | time_t sec; | |
2984 | int usec; | |
2985 | ||
2986 | if (! lisp_time_argument (time, &sec, &usec)) | |
2987 | error ("Invalid time specification"); | |
2988 | ||
2989 | absname = Fexpand_file_name (filename, current_buffer->directory); | |
2990 | ||
2991 | /* If the file name has special constructs in it, | |
2992 | call the corresponding file handler. */ | |
2993 | handler = Ffind_file_name_handler (absname, Qset_file_times); | |
2994 | if (!NILP (handler)) | |
2995 | return call3 (handler, Qset_file_times, absname, time); | |
2996 | ||
2997 | encoded_absname = ENCODE_FILE (absname); | |
5df5e07c | 2998 | |
819da85b EZ |
2999 | { |
3000 | EMACS_TIME t; | |
3001 | ||
3002 | EMACS_SET_SECS (t, sec); | |
3003 | EMACS_SET_USECS (t, usec); | |
3004 | ||
3005 | if (set_file_times (SDATA (encoded_absname), t, t)) | |
3006 | { | |
3007 | #ifdef DOS_NT | |
3008 | struct stat st; | |
3009 | ||
3010 | /* Setting times on a directory always fails. */ | |
3011 | if (stat (SDATA (encoded_absname), &st) == 0 | |
3012 | && (st.st_mode & S_IFMT) == S_IFDIR) | |
3013 | return Qnil; | |
3014 | #endif | |
3015 | report_file_error ("Setting file times", Fcons (absname, Qnil)); | |
3016 | return Qnil; | |
3017 | } | |
3018 | } | |
5df5e07c | 3019 | |
819da85b EZ |
3020 | return Qt; |
3021 | } | |
f793dc6c | 3022 | \f |
697c17a2 | 3023 | #ifdef HAVE_SYNC |
85ffea93 | 3024 | DEFUN ("unix-sync", Funix_sync, Sunix_sync, 0, 0, "", |
8c1a1077 | 3025 | doc: /* Tell Unix to finish all pending disk updates. */) |
5842a27b | 3026 | (void) |
85ffea93 RS |
3027 | { |
3028 | sync (); | |
3029 | return Qnil; | |
3030 | } | |
3031 | ||
697c17a2 | 3032 | #endif /* HAVE_SYNC */ |
85ffea93 | 3033 | |
570d7624 | 3034 | DEFUN ("file-newer-than-file-p", Ffile_newer_than_file_p, Sfile_newer_than_file_p, 2, 2, 0, |
8c1a1077 PJ |
3035 | doc: /* Return t if file FILE1 is newer than file FILE2. |
3036 | If FILE1 does not exist, the answer is nil; | |
3037 | otherwise, if FILE2 does not exist, the answer is t. */) | |
5842a27b | 3038 | (Lisp_Object file1, Lisp_Object file2) |
570d7624 | 3039 | { |
199607e4 | 3040 | Lisp_Object absname1, absname2; |
570d7624 JB |
3041 | struct stat st; |
3042 | int mtime1; | |
32f4334d | 3043 | Lisp_Object handler; |
09121adc | 3044 | struct gcpro gcpro1, gcpro2; |
570d7624 | 3045 | |
b7826503 PJ |
3046 | CHECK_STRING (file1); |
3047 | CHECK_STRING (file2); | |
570d7624 | 3048 | |
199607e4 RS |
3049 | absname1 = Qnil; |
3050 | GCPRO2 (absname1, file2); | |
3051 | absname1 = expand_and_dir_to_file (file1, current_buffer->directory); | |
3052 | absname2 = expand_and_dir_to_file (file2, current_buffer->directory); | |
09121adc | 3053 | UNGCPRO; |
570d7624 | 3054 | |
32f4334d RS |
3055 | /* If the file name has special constructs in it, |
3056 | call the corresponding file handler. */ | |
199607e4 | 3057 | handler = Ffind_file_name_handler (absname1, Qfile_newer_than_file_p); |
51cf6d37 | 3058 | if (NILP (handler)) |
199607e4 | 3059 | handler = Ffind_file_name_handler (absname2, Qfile_newer_than_file_p); |
32f4334d | 3060 | if (!NILP (handler)) |
199607e4 | 3061 | return call3 (handler, Qfile_newer_than_file_p, absname1, absname2); |
32f4334d | 3062 | |
b1d1b865 RS |
3063 | GCPRO2 (absname1, absname2); |
3064 | absname1 = ENCODE_FILE (absname1); | |
3065 | absname2 = ENCODE_FILE (absname2); | |
3066 | UNGCPRO; | |
3067 | ||
d5db4077 | 3068 | if (stat (SDATA (absname1), &st) < 0) |
570d7624 JB |
3069 | return Qnil; |
3070 | ||
3071 | mtime1 = st.st_mtime; | |
3072 | ||
d5db4077 | 3073 | if (stat (SDATA (absname2), &st) < 0) |
570d7624 JB |
3074 | return Qt; |
3075 | ||
3076 | return (mtime1 > st.st_mtime) ? Qt : Qnil; | |
3077 | } | |
3078 | \f | |
5e570b75 | 3079 | #ifdef DOS_NT |
4c3c22f3 | 3080 | Lisp_Object Qfind_buffer_file_type; |
5e570b75 | 3081 | #endif /* DOS_NT */ |
4c3c22f3 | 3082 | |
6fdaa9a0 KH |
3083 | #ifndef READ_BUF_SIZE |
3084 | #define READ_BUF_SIZE (64 << 10) | |
3085 | #endif | |
3086 | ||
98a7d268 KH |
3087 | /* This function is called after Lisp functions to decide a coding |
3088 | system are called, or when they cause an error. Before they are | |
3089 | called, the current buffer is set unibyte and it contains only a | |
3090 | newly inserted text (thus the buffer was empty before the | |
3091 | insertion). | |
3092 | ||
3093 | The functions may set markers, overlays, text properties, or even | |
3094 | alter the buffer contents, change the current buffer. | |
3095 | ||
3096 | Here, we reset all those changes by: | |
3097 | o set back the current buffer. | |
3098 | o move all markers and overlays to BEG. | |
3099 | o remove all text properties. | |
3100 | o set back the buffer multibyteness. */ | |
f736ffbf KH |
3101 | |
3102 | static Lisp_Object | |
971de7fb | 3103 | decide_coding_unwind (Lisp_Object unwind_data) |
f736ffbf | 3104 | { |
98a7d268 | 3105 | Lisp_Object multibyte, undo_list, buffer; |
f736ffbf | 3106 | |
98a7d268 KH |
3107 | multibyte = XCAR (unwind_data); |
3108 | unwind_data = XCDR (unwind_data); | |
3109 | undo_list = XCAR (unwind_data); | |
3110 | buffer = XCDR (unwind_data); | |
3111 | ||
3112 | if (current_buffer != XBUFFER (buffer)) | |
3113 | set_buffer_internal (XBUFFER (buffer)); | |
3114 | adjust_markers_for_delete (BEG, BEG_BYTE, Z, Z_BYTE); | |
3115 | adjust_overlays_for_delete (BEG, Z - BEG); | |
3116 | BUF_INTERVALS (current_buffer) = 0; | |
3117 | TEMP_SET_PT_BOTH (BEG, BEG_BYTE); | |
3118 | ||
3119 | /* Now we are safe to change the buffer's multibyteness directly. */ | |
3120 | current_buffer->enable_multibyte_characters = multibyte; | |
3121 | current_buffer->undo_list = undo_list; | |
f736ffbf KH |
3122 | |
3123 | return Qnil; | |
3124 | } | |
3125 | ||
55587f8a | 3126 | |
1b978129 | 3127 | /* Used to pass values from insert-file-contents to read_non_regular. */ |
55587f8a | 3128 | |
1b978129 | 3129 | static int non_regular_fd; |
ae19ba7c SM |
3130 | static EMACS_INT non_regular_inserted; |
3131 | static EMACS_INT non_regular_nbytes; | |
55587f8a | 3132 | |
55587f8a | 3133 | |
1b978129 | 3134 | /* Read from a non-regular file. |
438105ed | 3135 | Read non_regular_nbytes bytes max from non_regular_fd. |
1b978129 GM |
3136 | Non_regular_inserted specifies where to put the read bytes. |
3137 | Value is the number of bytes read. */ | |
55587f8a GM |
3138 | |
3139 | static Lisp_Object | |
9c8a2331 | 3140 | read_non_regular (Lisp_Object ignore) |
55587f8a | 3141 | { |
ae19ba7c | 3142 | EMACS_INT nbytes; |
efdc16c9 | 3143 | |
1b978129 GM |
3144 | immediate_quit = 1; |
3145 | QUIT; | |
3146 | nbytes = emacs_read (non_regular_fd, | |
28c3eb5a | 3147 | BEG_ADDR + PT_BYTE - BEG_BYTE + non_regular_inserted, |
1b978129 | 3148 | non_regular_nbytes); |
1b978129 GM |
3149 | immediate_quit = 0; |
3150 | return make_number (nbytes); | |
3151 | } | |
55587f8a | 3152 | |
d0e2444e | 3153 | |
1b978129 GM |
3154 | /* Condition-case handler used when reading from non-regular files |
3155 | in insert-file-contents. */ | |
3156 | ||
3157 | static Lisp_Object | |
9c8a2331 | 3158 | read_non_regular_quit (Lisp_Object ignore) |
1b978129 | 3159 | { |
55587f8a GM |
3160 | return Qnil; |
3161 | } | |
3162 | ||
3163 | ||
570d7624 | 3164 | DEFUN ("insert-file-contents", Finsert_file_contents, Sinsert_file_contents, |
8c1a1077 PJ |
3165 | 1, 5, 0, |
3166 | doc: /* Insert contents of file FILENAME after point. | |
cf6d2357 | 3167 | Returns list of absolute file name and number of characters inserted. |
6f2528d8 MR |
3168 | If second argument VISIT is non-nil, the buffer's visited filename and |
3169 | last save file modtime are set, and it is marked unmodified. If | |
3170 | visiting and the file does not exist, visiting is completed before the | |
3171 | error is signaled. | |
3172 | ||
3173 | The optional third and fourth arguments BEG and END specify what portion | |
3174 | of the file to insert. These arguments count bytes in the file, not | |
3175 | characters in the buffer. If VISIT is non-nil, BEG and END must be nil. | |
3176 | ||
3177 | If optional fifth argument REPLACE is non-nil, replace the current | |
3178 | buffer contents (in the accessible portion) with the file contents. | |
3179 | This is better than simply deleting and inserting the whole thing | |
3180 | because (1) it preserves some marker positions and (2) it puts less data | |
3181 | in the undo list. When REPLACE is non-nil, the second return value is | |
3182 | the number of characters that replace previous buffer contents. | |
3183 | ||
3184 | This function does code conversion according to the value of | |
3185 | `coding-system-for-read' or `file-coding-system-alist', and sets the | |
3186 | variable `last-coding-system-used' to the coding system actually used. */) | |
5842a27b | 3187 | (Lisp_Object filename, Lisp_Object visit, Lisp_Object beg, Lisp_Object end, Lisp_Object replace) |
570d7624 JB |
3188 | { |
3189 | struct stat st; | |
3190 | register int fd; | |
ae19ba7c | 3191 | EMACS_INT inserted = 0; |
18a9f8d9 | 3192 | int nochange = 0; |
ae19ba7c SM |
3193 | register EMACS_INT how_much; |
3194 | register EMACS_INT unprocessed; | |
331379bf | 3195 | int count = SPECPDL_INDEX (); |
6f2528d8 MR |
3196 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5; |
3197 | Lisp_Object handler, val, insval, orig_filename, old_undo; | |
d6a3cc15 | 3198 | Lisp_Object p; |
ae19ba7c | 3199 | EMACS_INT total = 0; |
53c34c46 | 3200 | int not_regular = 0; |
feb9dc27 | 3201 | unsigned char read_buf[READ_BUF_SIZE]; |
6fdaa9a0 | 3202 | struct coding_system coding; |
3dbcf3f6 | 3203 | unsigned char buffer[1 << 14]; |
727a0b4a | 3204 | int replace_handled = 0; |
ec7adf26 | 3205 | int set_coding_system = 0; |
db327c7e | 3206 | Lisp_Object coding_system; |
1b978129 | 3207 | int read_quit = 0; |
490ee853 | 3208 | Lisp_Object old_Vdeactivate_mark = Vdeactivate_mark; |
68780e2a | 3209 | int we_locked_file = 0; |
db65a627 | 3210 | int deferred_remove_unwind_protect = 0; |
32f4334d | 3211 | |
95385625 RS |
3212 | if (current_buffer->base_buffer && ! NILP (visit)) |
3213 | error ("Cannot do file visiting in an indirect buffer"); | |
3214 | ||
3215 | if (!NILP (current_buffer->read_only)) | |
3216 | Fbarf_if_buffer_read_only (); | |
3217 | ||
32f4334d | 3218 | val = Qnil; |
d6a3cc15 | 3219 | p = Qnil; |
b1d1b865 | 3220 | orig_filename = Qnil; |
6f2528d8 | 3221 | old_undo = Qnil; |
32f4334d | 3222 | |
6f2528d8 | 3223 | GCPRO5 (filename, val, p, orig_filename, old_undo); |
570d7624 | 3224 | |
b7826503 | 3225 | CHECK_STRING (filename); |
570d7624 JB |
3226 | filename = Fexpand_file_name (filename, Qnil); |
3227 | ||
1c157f8d KH |
3228 | /* The value Qnil means that the coding system is not yet |
3229 | decided. */ | |
3230 | coding_system = Qnil; | |
3231 | ||
32f4334d RS |
3232 | /* If the file name has special constructs in it, |
3233 | call the corresponding file handler. */ | |
49307295 | 3234 | handler = Ffind_file_name_handler (filename, Qinsert_file_contents); |
32f4334d RS |
3235 | if (!NILP (handler)) |
3236 | { | |
3d0387c0 RS |
3237 | val = call6 (handler, Qinsert_file_contents, filename, |
3238 | visit, beg, end, replace); | |
03699b14 KR |
3239 | if (CONSP (val) && CONSP (XCDR (val))) |
3240 | inserted = XINT (XCAR (XCDR (val))); | |
32f4334d RS |
3241 | goto handled; |
3242 | } | |
3243 | ||
b1d1b865 RS |
3244 | orig_filename = filename; |
3245 | filename = ENCODE_FILE (filename); | |
3246 | ||
570d7624 JB |
3247 | fd = -1; |
3248 | ||
c1c4693e RS |
3249 | #ifdef WINDOWSNT |
3250 | { | |
3251 | Lisp_Object tem = Vw32_get_true_file_attributes; | |
3252 | ||
3253 | /* Tell stat to use expensive method to get accurate info. */ | |
3254 | Vw32_get_true_file_attributes = Qt; | |
d5db4077 | 3255 | total = stat (SDATA (filename), &st); |
c1c4693e RS |
3256 | Vw32_get_true_file_attributes = tem; |
3257 | } | |
3258 | if (total < 0) | |
3259 | #else | |
d5db4077 | 3260 | if (stat (SDATA (filename), &st) < 0) |
c1c4693e | 3261 | #endif /* WINDOWSNT */ |
570d7624 | 3262 | { |
68c45bf0 | 3263 | if (fd >= 0) emacs_close (fd); |
99bc28f4 | 3264 | badopen: |
265a9e55 | 3265 | if (NILP (visit)) |
b1d1b865 | 3266 | report_file_error ("Opening input file", Fcons (orig_filename, Qnil)); |
570d7624 JB |
3267 | st.st_mtime = -1; |
3268 | how_much = 0; | |
0de6b8f4 | 3269 | if (!NILP (Vcoding_system_for_read)) |
22d92d6b | 3270 | Fset (Qbuffer_file_coding_system, Vcoding_system_for_read); |
570d7624 JB |
3271 | goto notfound; |
3272 | } | |
3273 | ||
99bc28f4 | 3274 | #ifdef S_IFREG |
be53b411 JB |
3275 | /* This code will need to be changed in order to work on named |
3276 | pipes, and it's probably just not worth it. So we should at | |
3277 | least signal an error. */ | |
99bc28f4 | 3278 | if (!S_ISREG (st.st_mode)) |
330bfe57 | 3279 | { |
d4b8687b RS |
3280 | not_regular = 1; |
3281 | ||
3282 | if (! NILP (visit)) | |
3283 | goto notfound; | |
3284 | ||
3285 | if (! NILP (replace) || ! NILP (beg) || ! NILP (end)) | |
24b1ddad KS |
3286 | xsignal2 (Qfile_error, |
3287 | build_string ("not a regular file"), orig_filename); | |
330bfe57 | 3288 | } |
be53b411 JB |
3289 | #endif |
3290 | ||
99bc28f4 | 3291 | if (fd < 0) |
d5db4077 | 3292 | if ((fd = emacs_open (SDATA (filename), O_RDONLY, 0)) < 0) |
99bc28f4 KH |
3293 | goto badopen; |
3294 | ||
3295 | /* Replacement should preserve point as it preserves markers. */ | |
3296 | if (!NILP (replace)) | |
3297 | record_unwind_protect (restore_point_unwind, Fpoint_marker ()); | |
3298 | ||
3299 | record_unwind_protect (close_file_unwind, make_number (fd)); | |
3300 | ||
11d300db | 3301 | /* Can happen on any platform that uses long as type of off_t, but allows |
7c2fb837 | 3302 | file sizes to exceed 2Gb, so give a suitable message. */ |
d4b8687b | 3303 | if (! not_regular && st.st_size < 0) |
11d300db | 3304 | error ("Maximum buffer size exceeded"); |
be53b411 | 3305 | |
9c856db9 GM |
3306 | /* Prevent redisplay optimizations. */ |
3307 | current_buffer->clip_changed = 1; | |
3308 | ||
9f57b6b4 KH |
3309 | if (!NILP (visit)) |
3310 | { | |
3311 | if (!NILP (beg) || !NILP (end)) | |
3312 | error ("Attempt to visit less than an entire file"); | |
3313 | if (BEG < Z && NILP (replace)) | |
3314 | error ("Cannot do file visiting in a non-empty buffer"); | |
3315 | } | |
7fded690 JB |
3316 | |
3317 | if (!NILP (beg)) | |
b7826503 | 3318 | CHECK_NUMBER (beg); |
7fded690 | 3319 | else |
2acfd7ae | 3320 | XSETFASTINT (beg, 0); |
7fded690 JB |
3321 | |
3322 | if (!NILP (end)) | |
b7826503 | 3323 | CHECK_NUMBER (end); |
7fded690 JB |
3324 | else |
3325 | { | |
d4b8687b RS |
3326 | if (! not_regular) |
3327 | { | |
3328 | XSETINT (end, st.st_size); | |
68c45bf0 PE |
3329 | |
3330 | /* Arithmetic overflow can occur if an Emacs integer cannot | |
3331 | represent the file size, or if the calculations below | |
3332 | overflow. The calculations below double the file size | |
3333 | twice, so check that it can be multiplied by 4 safely. */ | |
3334 | if (XINT (end) != st.st_size | |
ab226c50 SM |
3335 | /* Actually, it should test either INT_MAX or LONG_MAX |
3336 | depending on which one is used for EMACS_INT. But in | |
3337 | any case, in practice, this test is redundant with the | |
3338 | one above. | |
3339 | || st.st_size > INT_MAX / 4 */) | |
d4b8687b | 3340 | error ("Maximum buffer size exceeded"); |
d21dd12d GM |
3341 | |
3342 | /* The file size returned from stat may be zero, but data | |
3343 | may be readable nonetheless, for example when this is a | |
3344 | file in the /proc filesystem. */ | |
3345 | if (st.st_size == 0) | |
3346 | XSETINT (end, READ_BUF_SIZE); | |
d4b8687b | 3347 | } |
7fded690 JB |
3348 | } |
3349 | ||
356a6224 | 3350 | if (EQ (Vcoding_system_for_read, Qauto_save_coding)) |
5560aecd | 3351 | { |
75421805 | 3352 | coding_system = coding_inherit_eol_type (Qutf_8_emacs, Qunix); |
5560aecd KH |
3353 | setup_coding_system (coding_system, &coding); |
3354 | /* Ensure we set Vlast_coding_system_used. */ | |
3355 | set_coding_system = 1; | |
3356 | } | |
356a6224 | 3357 | else if (BEG < Z) |
f736ffbf KH |
3358 | { |
3359 | /* Decide the coding system to use for reading the file now | |
3360 | because we can't use an optimized method for handling | |
3361 | `coding:' tag if the current buffer is not empty. */ | |
f736ffbf | 3362 | if (!NILP (Vcoding_system_for_read)) |
db327c7e | 3363 | coding_system = Vcoding_system_for_read; |
f736ffbf KH |
3364 | else |
3365 | { | |
3366 | /* Don't try looking inside a file for a coding system | |
3367 | specification if it is not seekable. */ | |
3368 | if (! not_regular && ! NILP (Vset_auto_coding_function)) | |
3369 | { | |
3370 | /* Find a coding system specified in the heading two | |
3371 | lines or in the tailing several lines of the file. | |
3372 | We assume that the 1K-byte and 3K-byte for heading | |
003a7eaa | 3373 | and tailing respectively are sufficient for this |
f736ffbf | 3374 | purpose. */ |
ae19ba7c | 3375 | EMACS_INT nread; |
f736ffbf KH |
3376 | |
3377 | if (st.st_size <= (1024 * 4)) | |
68c45bf0 | 3378 | nread = emacs_read (fd, read_buf, 1024 * 4); |
f736ffbf KH |
3379 | else |
3380 | { | |
68c45bf0 | 3381 | nread = emacs_read (fd, read_buf, 1024); |
f736ffbf KH |
3382 | if (nread >= 0) |
3383 | { | |
3384 | if (lseek (fd, st.st_size - (1024 * 3), 0) < 0) | |
3385 | report_file_error ("Setting file position", | |
3386 | Fcons (orig_filename, Qnil)); | |
68c45bf0 | 3387 | nread += emacs_read (fd, read_buf + nread, 1024 * 3); |
f736ffbf KH |
3388 | } |
3389 | } | |
feb9dc27 | 3390 | |
f736ffbf KH |
3391 | if (nread < 0) |
3392 | error ("IO error reading %s: %s", | |
d5db4077 | 3393 | SDATA (orig_filename), emacs_strerror (errno)); |
f736ffbf KH |
3394 | else if (nread > 0) |
3395 | { | |
f736ffbf | 3396 | struct buffer *prev = current_buffer; |
685fc579 RS |
3397 | Lisp_Object buffer; |
3398 | struct buffer *buf; | |
f736ffbf KH |
3399 | |
3400 | record_unwind_protect (Fset_buffer, Fcurrent_buffer ()); | |
1d92afcd | 3401 | |
685fc579 RS |
3402 | buffer = Fget_buffer_create (build_string (" *code-converting-work*")); |
3403 | buf = XBUFFER (buffer); | |
3404 | ||
29ea8ae9 | 3405 | delete_all_overlays (buf); |
685fc579 RS |
3406 | buf->directory = current_buffer->directory; |
3407 | buf->read_only = Qnil; | |
3408 | buf->filename = Qnil; | |
3409 | buf->undo_list = Qt; | |
29ea8ae9 SM |
3410 | eassert (buf->overlays_before == NULL); |
3411 | eassert (buf->overlays_after == NULL); | |
efdc16c9 | 3412 | |
685fc579 RS |
3413 | set_buffer_internal (buf); |
3414 | Ferase_buffer (); | |
3415 | buf->enable_multibyte_characters = Qnil; | |
3416 | ||
f736ffbf KH |
3417 | insert_1_both (read_buf, nread, nread, 0, 0, 0); |
3418 | TEMP_SET_PT_BOTH (BEG, BEG_BYTE); | |
db327c7e | 3419 | coding_system = call2 (Vset_auto_coding_function, |
8f924df7 | 3420 | filename, make_number (nread)); |
f736ffbf | 3421 | set_buffer_internal (prev); |
efdc16c9 | 3422 | |
f736ffbf KH |
3423 | /* Discard the unwind protect for recovering the |
3424 | current buffer. */ | |
3425 | specpdl_ptr--; | |
3426 | ||
3427 | /* Rewind the file for the actual read done later. */ | |
3428 | if (lseek (fd, 0, 0) < 0) | |
3429 | report_file_error ("Setting file position", | |
3430 | Fcons (orig_filename, Qnil)); | |
3431 | } | |
3432 | } | |
feb9dc27 | 3433 | |
db327c7e | 3434 | if (NILP (coding_system)) |
f736ffbf KH |
3435 | { |
3436 | /* If we have not yet decided a coding system, check | |
3437 | file-coding-system-alist. */ | |
8f924df7 | 3438 | Lisp_Object args[6]; |
f736ffbf KH |
3439 | |
3440 | args[0] = Qinsert_file_contents, args[1] = orig_filename; | |
3441 | args[2] = visit, args[3] = beg, args[4] = end, args[5] = replace; | |
8f924df7 KH |
3442 | coding_system = Ffind_operation_coding_system (6, args); |
3443 | if (CONSP (coding_system)) | |
3444 | coding_system = XCAR (coding_system); | |
f736ffbf KH |
3445 | } |
3446 | } | |
c9e82392 | 3447 | |
db327c7e KH |
3448 | if (NILP (coding_system)) |
3449 | coding_system = Qundecided; | |
3450 | else | |
3451 | CHECK_CODING_SYSTEM (coding_system); | |
c8a6d68a | 3452 | |
db327c7e | 3453 | if (NILP (current_buffer->enable_multibyte_characters)) |
237a6fd2 RS |
3454 | /* We must suppress all character code conversion except for |
3455 | end-of-line conversion. */ | |
db327c7e | 3456 | coding_system = raw_text_coding_system (coding_system); |
54369368 | 3457 | |
db327c7e KH |
3458 | setup_coding_system (coding_system, &coding); |
3459 | /* Ensure we set Vlast_coding_system_used. */ | |
3460 | set_coding_system = 1; | |
f736ffbf | 3461 | } |
6cf71bf1 | 3462 | |
3d0387c0 RS |
3463 | /* If requested, replace the accessible part of the buffer |
3464 | with the file contents. Avoid replacing text at the | |
3465 | beginning or end of the buffer that matches the file contents; | |
3dbcf3f6 RS |
3466 | that preserves markers pointing to the unchanged parts. |
3467 | ||
3468 | Here we implement this feature in an optimized way | |
3469 | for the case where code conversion is NOT needed. | |
3470 | The following if-statement handles the case of conversion | |
727a0b4a RS |
3471 | in a less optimal way. |
3472 | ||
3473 | If the code conversion is "automatic" then we try using this | |
3474 | method and hope for the best. | |
3475 | But if we discover the need for conversion, we give up on this method | |
3476 | and let the following if-statement handle the replace job. */ | |
3dbcf3f6 | 3477 | if (!NILP (replace) |
f736ffbf | 3478 | && BEGV < ZV |
db327c7e KH |
3479 | && (NILP (coding_system) |
3480 | || ! CODING_REQUIRE_DECODING (&coding))) | |
3d0387c0 | 3481 | { |
ec7adf26 RS |
3482 | /* same_at_start and same_at_end count bytes, |
3483 | because file access counts bytes | |
3484 | and BEG and END count bytes. */ | |
ae19ba7c SM |
3485 | EMACS_INT same_at_start = BEGV_BYTE; |
3486 | EMACS_INT same_at_end = ZV_BYTE; | |
3487 | EMACS_INT overlap; | |
6fdaa9a0 KH |
3488 | /* There is still a possibility we will find the need to do code |
3489 | conversion. If that happens, we set this variable to 1 to | |
727a0b4a | 3490 | give up on handling REPLACE in the optimized way. */ |
6fdaa9a0 | 3491 | int giveup_match_end = 0; |
9c28748f | 3492 | |
4d2a0879 RS |
3493 | if (XINT (beg) != 0) |
3494 | { | |
3495 | if (lseek (fd, XINT (beg), 0) < 0) | |
3496 | report_file_error ("Setting file position", | |
b1d1b865 | 3497 | Fcons (orig_filename, Qnil)); |
4d2a0879 RS |
3498 | } |
3499 | ||
3d0387c0 RS |
3500 | immediate_quit = 1; |
3501 | QUIT; | |
3502 | /* Count how many chars at the start of the file | |
3503 | match the text at the beginning of the buffer. */ | |
3504 | while (1) | |
3505 | { | |
ae19ba7c | 3506 | EMACS_INT nread, bufpos; |
3d0387c0 | 3507 | |
68c45bf0 | 3508 | nread = emacs_read (fd, buffer, sizeof buffer); |
3d0387c0 RS |
3509 | if (nread < 0) |
3510 | error ("IO error reading %s: %s", | |
d5db4077 | 3511 | SDATA (orig_filename), emacs_strerror (errno)); |
3d0387c0 RS |
3512 | else if (nread == 0) |
3513 | break; | |
6fdaa9a0 | 3514 | |
db327c7e | 3515 | if (CODING_REQUIRE_DETECTION (&coding)) |
727a0b4a | 3516 | { |
5b359650 | 3517 | coding_system = detect_coding_system (buffer, nread, nread, 1, 0, |
db327c7e KH |
3518 | coding_system); |
3519 | setup_coding_system (coding_system, &coding); | |
727a0b4a RS |
3520 | } |
3521 | ||
db327c7e KH |
3522 | if (CODING_REQUIRE_DECODING (&coding)) |
3523 | /* We found that the file should be decoded somehow. | |
727a0b4a RS |
3524 | Let's give up here. */ |
3525 | { | |
3526 | giveup_match_end = 1; | |
3527 | break; | |
3528 | } | |
3529 | ||
3d0387c0 | 3530 | bufpos = 0; |
ec7adf26 | 3531 | while (bufpos < nread && same_at_start < ZV_BYTE |
6fdaa9a0 | 3532 | && FETCH_BYTE (same_at_start) == buffer[bufpos]) |
3d0387c0 RS |
3533 | same_at_start++, bufpos++; |
3534 | /* If we found a discrepancy, stop the scan. | |
8e6208c5 | 3535 | Otherwise loop around and scan the next bufferful. */ |
3d0387c0 RS |
3536 | if (bufpos != nread) |
3537 | break; | |
3538 | } | |
3539 | immediate_quit = 0; | |
3540 | /* If the file matches the buffer completely, | |
3541 | there's no need to replace anything. */ | |
ec7adf26 | 3542 | if (same_at_start - BEGV_BYTE == XINT (end)) |
3d0387c0 | 3543 | { |
68c45bf0 | 3544 | emacs_close (fd); |
a1d2b64a | 3545 | specpdl_ptr--; |
1051b3b3 | 3546 | /* Truncate the buffer to the size of the file. */ |
7dae4502 | 3547 | del_range_1 (same_at_start, same_at_end, 0, 0); |
3d0387c0 RS |
3548 | goto handled; |
3549 | } | |
3550 | immediate_quit = 1; | |
3551 | QUIT; | |
3552 | /* Count how many chars at the end of the file | |
6fdaa9a0 KH |
3553 | match the text at the end of the buffer. But, if we have |
3554 | already found that decoding is necessary, don't waste time. */ | |
3555 | while (!giveup_match_end) | |
3d0387c0 | 3556 | { |
ae19ba7c | 3557 | EMACS_INT total_read, nread, bufpos, curpos, trial; |
3d0387c0 RS |
3558 | |
3559 | /* At what file position are we now scanning? */ | |
ec7adf26 | 3560 | curpos = XINT (end) - (ZV_BYTE - same_at_end); |
fc81fa9e KH |
3561 | /* If the entire file matches the buffer tail, stop the scan. */ |
3562 | if (curpos == 0) | |
3563 | break; | |
3d0387c0 RS |
3564 | /* How much can we scan in the next step? */ |
3565 | trial = min (curpos, sizeof buffer); | |
3566 | if (lseek (fd, curpos - trial, 0) < 0) | |
3567 | report_file_error ("Setting file position", | |
b1d1b865 | 3568 | Fcons (orig_filename, Qnil)); |
3d0387c0 | 3569 | |
b02439c8 | 3570 | total_read = nread = 0; |
3d0387c0 RS |
3571 | while (total_read < trial) |
3572 | { | |
68c45bf0 | 3573 | nread = emacs_read (fd, buffer + total_read, trial - total_read); |
2bd2273e | 3574 | if (nread < 0) |
3d0387c0 | 3575 | error ("IO error reading %s: %s", |
d5db4077 | 3576 | SDATA (orig_filename), emacs_strerror (errno)); |
2bd2273e GM |
3577 | else if (nread == 0) |
3578 | break; | |
3d0387c0 RS |
3579 | total_read += nread; |
3580 | } | |
efdc16c9 | 3581 | |
8e6208c5 | 3582 | /* Scan this bufferful from the end, comparing with |
3d0387c0 RS |
3583 | the Emacs buffer. */ |
3584 | bufpos = total_read; | |
efdc16c9 | 3585 | |
3d0387c0 RS |
3586 | /* Compare with same_at_start to avoid counting some buffer text |
3587 | as matching both at the file's beginning and at the end. */ | |
3588 | while (bufpos > 0 && same_at_end > same_at_start | |
6fdaa9a0 | 3589 | && FETCH_BYTE (same_at_end - 1) == buffer[bufpos - 1]) |
3d0387c0 | 3590 | same_at_end--, bufpos--; |
727a0b4a | 3591 | |
3d0387c0 | 3592 | /* If we found a discrepancy, stop the scan. |
8e6208c5 | 3593 | Otherwise loop around and scan the preceding bufferful. */ |
3d0387c0 | 3594 | if (bufpos != 0) |
727a0b4a RS |
3595 | { |
3596 | /* If this discrepancy is because of code conversion, | |
3597 | we cannot use this method; giveup and try the other. */ | |
3598 | if (same_at_end > same_at_start | |
3599 | && FETCH_BYTE (same_at_end - 1) >= 0200 | |
71312b68 | 3600 | && ! NILP (current_buffer->enable_multibyte_characters) |
c8a6d68a | 3601 | && (CODING_MAY_REQUIRE_DECODING (&coding))) |
727a0b4a RS |
3602 | giveup_match_end = 1; |
3603 | break; | |
3604 | } | |
b02439c8 GM |
3605 | |
3606 | if (nread == 0) | |
3607 | break; | |
3d0387c0 RS |
3608 | } |
3609 | immediate_quit = 0; | |
9c28748f | 3610 | |
727a0b4a RS |
3611 | if (! giveup_match_end) |
3612 | { | |
ae19ba7c | 3613 | EMACS_INT temp; |
ec7adf26 | 3614 | |
727a0b4a | 3615 | /* We win! We can handle REPLACE the optimized way. */ |
9c28748f | 3616 | |
20f6783d RS |
3617 | /* Extend the start of non-matching text area to multibyte |
3618 | character boundary. */ | |
3619 | if (! NILP (current_buffer->enable_multibyte_characters)) | |
3620 | while (same_at_start > BEGV_BYTE | |
3621 | && ! CHAR_HEAD_P (FETCH_BYTE (same_at_start))) | |
3622 | same_at_start--; | |
3623 | ||
3624 | /* Extend the end of non-matching text area to multibyte | |
71312b68 RS |
3625 | character boundary. */ |
3626 | if (! NILP (current_buffer->enable_multibyte_characters)) | |
ec7adf26 RS |
3627 | while (same_at_end < ZV_BYTE |
3628 | && ! CHAR_HEAD_P (FETCH_BYTE (same_at_end))) | |
71312b68 RS |
3629 | same_at_end++; |
3630 | ||
727a0b4a | 3631 | /* Don't try to reuse the same piece of text twice. */ |
ec7adf26 RS |
3632 | overlap = (same_at_start - BEGV_BYTE |
3633 | - (same_at_end + st.st_size - ZV)); | |
727a0b4a RS |
3634 | if (overlap > 0) |
3635 | same_at_end += overlap; | |
9c28748f | 3636 | |
727a0b4a | 3637 | /* Arrange to read only the nonmatching middle part of the file. */ |
ec7adf26 RS |
3638 | XSETFASTINT (beg, XINT (beg) + (same_at_start - BEGV_BYTE)); |
3639 | XSETFASTINT (end, XINT (end) - (ZV_BYTE - same_at_end)); | |
3dbcf3f6 | 3640 | |
ec7adf26 | 3641 | del_range_byte (same_at_start, same_at_end, 0); |
727a0b4a | 3642 | /* Insert from the file at the proper position. */ |
ec7adf26 RS |
3643 | temp = BYTE_TO_CHAR (same_at_start); |
3644 | SET_PT_BOTH (temp, same_at_start); | |
727a0b4a RS |
3645 | |
3646 | /* If display currently starts at beginning of line, | |
3647 | keep it that way. */ | |
3648 | if (XBUFFER (XWINDOW (selected_window)->buffer) == current_buffer) | |
3649 | XWINDOW (selected_window)->start_at_line_beg = Fbolp (); | |
3650 | ||
3651 | replace_handled = 1; | |
3652 | } | |
3dbcf3f6 RS |
3653 | } |
3654 | ||
3655 | /* If requested, replace the accessible part of the buffer | |
3656 | with the file contents. Avoid replacing text at the | |
3657 | beginning or end of the buffer that matches the file contents; | |
3658 | that preserves markers pointing to the unchanged parts. | |
3659 | ||
3660 | Here we implement this feature for the case where code conversion | |
3661 | is needed, in a simple way that needs a lot of memory. | |
3662 | The preceding if-statement handles the case of no conversion | |
3663 | in a more optimized way. */ | |
f736ffbf | 3664 | if (!NILP (replace) && ! replace_handled && BEGV < ZV) |
3dbcf3f6 | 3665 | { |
13818c30 SM |
3666 | EMACS_INT same_at_start = BEGV_BYTE; |
3667 | EMACS_INT same_at_end = ZV_BYTE; | |
3668 | EMACS_INT same_at_start_charpos; | |
3669 | EMACS_INT inserted_chars; | |
3670 | EMACS_INT overlap; | |
3671 | EMACS_INT bufpos; | |
db327c7e | 3672 | unsigned char *decoded; |
ae19ba7c | 3673 | EMACS_INT temp; |
8f924df7 | 3674 | int this_count = SPECPDL_INDEX (); |
59c94f03 | 3675 | int multibyte = ! NILP (current_buffer->enable_multibyte_characters); |
5b359650 | 3676 | Lisp_Object conversion_buffer; |
db327c7e | 3677 | |
5b359650 | 3678 | conversion_buffer = code_conversion_save (1, multibyte); |
3dbcf3f6 RS |
3679 | |
3680 | /* First read the whole file, performing code conversion into | |
3681 | CONVERSION_BUFFER. */ | |
3682 | ||
727a0b4a | 3683 | if (lseek (fd, XINT (beg), 0) < 0) |
8f924df7 KH |
3684 | report_file_error ("Setting file position", |
3685 | Fcons (orig_filename, Qnil)); | |
727a0b4a | 3686 | |
3dbcf3f6 RS |
3687 | total = st.st_size; /* Total bytes in the file. */ |
3688 | how_much = 0; /* Bytes read from file so far. */ | |
3689 | inserted = 0; /* Bytes put into CONVERSION_BUFFER so far. */ | |
3690 | unprocessed = 0; /* Bytes not processed in previous loop. */ | |
3691 | ||
2ba48777 | 3692 | GCPRO1 (conversion_buffer); |
3dbcf3f6 RS |
3693 | while (how_much < total) |
3694 | { | |
db327c7e KH |
3695 | /* We read one bunch by one (READ_BUF_SIZE bytes) to allow |
3696 | quitting while reading a huge while. */ | |
3dbcf3f6 | 3697 | /* try is reserved in some compilers (Microsoft C) */ |
ae19ba7c SM |
3698 | EMACS_INT trytry = min (total - how_much, |
3699 | READ_BUF_SIZE - unprocessed); | |
3700 | EMACS_INT this; | |
3dbcf3f6 RS |
3701 | |
3702 | /* Allow quitting out of the actual I/O. */ | |
3703 | immediate_quit = 1; | |
3704 | QUIT; | |
db327c7e | 3705 | this = emacs_read (fd, read_buf + unprocessed, trytry); |
3dbcf3f6 RS |
3706 | immediate_quit = 0; |
3707 | ||
db327c7e | 3708 | if (this <= 0) |
3dbcf3f6 | 3709 | { |
db327c7e KH |
3710 | if (this < 0) |
3711 | how_much = this; | |
3dbcf3f6 RS |
3712 | break; |
3713 | } | |
3714 | ||
3715 | how_much += this; | |
3716 | ||
bf1c0f27 SM |
3717 | BUF_TEMP_SET_PT (XBUFFER (conversion_buffer), |
3718 | BUF_Z (XBUFFER (conversion_buffer))); | |
db327c7e KH |
3719 | decode_coding_c_string (&coding, read_buf, unprocessed + this, |
3720 | conversion_buffer); | |
3721 | unprocessed = coding.carryover_bytes; | |
3722 | if (coding.carryover_bytes > 0) | |
72af86bd | 3723 | memcpy (read_buf, coding.carryover, unprocessed); |
3dbcf3f6 | 3724 | } |
2ba48777 | 3725 | UNGCPRO; |
db327c7e | 3726 | emacs_close (fd); |
3dbcf3f6 | 3727 | |
db65a627 CY |
3728 | /* We should remove the unwind_protect calling |
3729 | close_file_unwind, but other stuff has been added the stack, | |
3730 | so defer the removal till we reach the `handled' label. */ | |
3731 | deferred_remove_unwind_protect = 1; | |
3732 | ||
db327c7e KH |
3733 | /* At this point, HOW_MUCH should equal TOTAL, or should be <= 0 |
3734 | if we couldn't read the file. */ | |
3dbcf3f6 RS |
3735 | |
3736 | if (how_much < 0) | |
4ed925c6 MB |
3737 | error ("IO error reading %s: %s", |
3738 | SDATA (orig_filename), emacs_strerror (errno)); | |
3dbcf3f6 | 3739 | |
db327c7e KH |
3740 | if (unprocessed > 0) |
3741 | { | |
3742 | coding.mode |= CODING_MODE_LAST_BLOCK; | |
3743 | decode_coding_c_string (&coding, read_buf, unprocessed, | |
3744 | conversion_buffer); | |
3745 | coding.mode &= ~CODING_MODE_LAST_BLOCK; | |
3746 | } | |
3747 | ||
50b06221 | 3748 | coding_system = CODING_ID_NAME (coding.id); |
f6a07420 | 3749 | set_coding_system = 1; |
db327c7e | 3750 | decoded = BUF_BEG_ADDR (XBUFFER (conversion_buffer)); |
50342b35 KH |
3751 | inserted = (BUF_Z_BYTE (XBUFFER (conversion_buffer)) |
3752 | - BUF_BEG_BYTE (XBUFFER (conversion_buffer))); | |
db327c7e KH |
3753 | |
3754 | /* Compare the beginning of the converted string with the buffer | |
3755 | text. */ | |
3dbcf3f6 RS |
3756 | |
3757 | bufpos = 0; | |
3758 | while (bufpos < inserted && same_at_start < same_at_end | |
db327c7e | 3759 | && FETCH_BYTE (same_at_start) == decoded[bufpos]) |
3dbcf3f6 RS |
3760 | same_at_start++, bufpos++; |
3761 | ||
db327c7e | 3762 | /* If the file matches the head of buffer completely, |
3dbcf3f6 RS |
3763 | there's no need to replace anything. */ |
3764 | ||
3765 | if (bufpos == inserted) | |
3766 | { | |
3dbcf3f6 | 3767 | /* Truncate the buffer to the size of the file. */ |
18a9f8d9 SM |
3768 | if (same_at_start == same_at_end) |
3769 | nochange = 1; | |
3770 | else | |
3771 | del_range_byte (same_at_start, same_at_end, 0); | |
427f5aab | 3772 | inserted = 0; |
e8553dd1 KH |
3773 | |
3774 | unbind_to (this_count, Qnil); | |
3dbcf3f6 RS |
3775 | goto handled; |
3776 | } | |
3777 | ||
db327c7e KH |
3778 | /* Extend the start of non-matching text area to the previous |
3779 | multibyte character boundary. */ | |
20f6783d RS |
3780 | if (! NILP (current_buffer->enable_multibyte_characters)) |
3781 | while (same_at_start > BEGV_BYTE | |
3782 | && ! CHAR_HEAD_P (FETCH_BYTE (same_at_start))) | |
3783 | same_at_start--; | |
3784 | ||
3dbcf3f6 RS |
3785 | /* Scan this bufferful from the end, comparing with |
3786 | the Emacs buffer. */ | |
3787 | bufpos = inserted; | |
3788 | ||
3789 | /* Compare with same_at_start to avoid counting some buffer text | |
3790 | as matching both at the file's beginning and at the end. */ | |
3791 | while (bufpos > 0 && same_at_end > same_at_start | |
db327c7e | 3792 | && FETCH_BYTE (same_at_end - 1) == decoded[bufpos - 1]) |
3dbcf3f6 RS |
3793 | same_at_end--, bufpos--; |
3794 | ||
db327c7e KH |
3795 | /* Extend the end of non-matching text area to the next |
3796 | multibyte character boundary. */ | |
20f6783d RS |
3797 | if (! NILP (current_buffer->enable_multibyte_characters)) |
3798 | while (same_at_end < ZV_BYTE | |
3799 | && ! CHAR_HEAD_P (FETCH_BYTE (same_at_end))) | |
3800 | same_at_end++; | |
3801 | ||
3dbcf3f6 | 3802 | /* Don't try to reuse the same piece of text twice. */ |
ec7adf26 | 3803 | overlap = same_at_start - BEGV_BYTE - (same_at_end + inserted - ZV_BYTE); |
3dbcf3f6 RS |
3804 | if (overlap > 0) |
3805 | same_at_end += overlap; | |
3806 | ||
727a0b4a RS |
3807 | /* If display currently starts at beginning of line, |
3808 | keep it that way. */ | |
3809 | if (XBUFFER (XWINDOW (selected_window)->buffer) == current_buffer) | |
3810 | XWINDOW (selected_window)->start_at_line_beg = Fbolp (); | |
3811 | ||
3dbcf3f6 RS |
3812 | /* Replace the chars that we need to replace, |
3813 | and update INSERTED to equal the number of bytes | |
db327c7e | 3814 | we are taking from the decoded string. */ |
4b70e2c9 | 3815 | inserted -= (ZV_BYTE - same_at_end) + (same_at_start - BEGV_BYTE); |
427f5aab | 3816 | |
643c73b9 | 3817 | if (same_at_end != same_at_start) |
427f5aab KH |
3818 | { |
3819 | del_range_byte (same_at_start, same_at_end, 0); | |
3820 | temp = GPT; | |
3821 | same_at_start = GPT_BYTE; | |
3822 | } | |
643c73b9 RS |
3823 | else |
3824 | { | |
643c73b9 | 3825 | temp = BYTE_TO_CHAR (same_at_start); |
643c73b9 | 3826 | } |
427f5aab KH |
3827 | /* Insert from the file at the proper position. */ |
3828 | SET_PT_BOTH (temp, same_at_start); | |
50342b35 KH |
3829 | same_at_start_charpos |
3830 | = buf_bytepos_to_charpos (XBUFFER (conversion_buffer), | |
7f5d2c72 SM |
3831 | same_at_start - BEGV_BYTE |
3832 | + BUF_BEG_BYTE (XBUFFER (conversion_buffer))); | |
50342b35 KH |
3833 | inserted_chars |
3834 | = (buf_bytepos_to_charpos (XBUFFER (conversion_buffer), | |
7f5d2c72 SM |
3835 | same_at_start + inserted - BEGV_BYTE |
3836 | + BUF_BEG_BYTE (XBUFFER (conversion_buffer))) | |
50342b35 | 3837 | - same_at_start_charpos); |
d07af40d KH |
3838 | /* This binding is to avoid ask-user-about-supersession-threat |
3839 | being called in insert_from_buffer (via in | |
3840 | prepare_to_modify_buffer). */ | |
3841 | specbind (intern ("buffer-file-name"), Qnil); | |
db327c7e | 3842 | insert_from_buffer (XBUFFER (conversion_buffer), |
50342b35 | 3843 | same_at_start_charpos, inserted_chars, 0); |
427f5aab KH |
3844 | /* Set `inserted' to the number of inserted characters. */ |
3845 | inserted = PT - temp; | |
77343e1d KH |
3846 | /* Set point before the inserted characters. */ |
3847 | SET_PT_BOTH (temp, same_at_start); | |
3dbcf3f6 | 3848 | |
db327c7e | 3849 | unbind_to (this_count, Qnil); |
3dbcf3f6 | 3850 | |
3dbcf3f6 | 3851 | goto handled; |
3d0387c0 RS |
3852 | } |
3853 | ||
d4b8687b RS |
3854 | if (! not_regular) |
3855 | { | |
3856 | register Lisp_Object temp; | |
7fded690 | 3857 | |
d4b8687b | 3858 | total = XINT (end) - XINT (beg); |
570d7624 | 3859 | |
d4b8687b RS |
3860 | /* Make sure point-max won't overflow after this insertion. */ |
3861 | XSETINT (temp, total); | |
3862 | if (total != XINT (temp)) | |
3863 | error ("Maximum buffer size exceeded"); | |
3864 | } | |
3865 | else | |
3866 | /* For a special file, all we can do is guess. */ | |
3867 | total = READ_BUF_SIZE; | |
570d7624 | 3868 | |
68780e2a RS |
3869 | if (NILP (visit) && inserted > 0) |
3870 | { | |
3871 | #ifdef CLASH_DETECTION | |
3872 | if (!NILP (current_buffer->file_truename) | |
3873 | /* Make binding buffer-file-name to nil effective. */ | |
3874 | && !NILP (current_buffer->filename) | |
3875 | && SAVE_MODIFF >= MODIFF) | |
3876 | we_locked_file = 1; | |
3877 | #endif /* CLASH_DETECTION */ | |
3878 | prepare_to_modify_buffer (GPT, GPT, NULL); | |
3879 | } | |
570d7624 | 3880 | |
7fe52289 | 3881 | move_gap (PT); |
7fded690 JB |
3882 | if (GAP_SIZE < total) |
3883 | make_gap (total - GAP_SIZE); | |
3884 | ||
a1d2b64a | 3885 | if (XINT (beg) != 0 || !NILP (replace)) |
7fded690 JB |
3886 | { |
3887 | if (lseek (fd, XINT (beg), 0) < 0) | |
b1d1b865 RS |
3888 | report_file_error ("Setting file position", |
3889 | Fcons (orig_filename, Qnil)); | |
7fded690 JB |
3890 | } |
3891 | ||
6fdaa9a0 | 3892 | /* In the following loop, HOW_MUCH contains the total bytes read so |
c8a6d68a KH |
3893 | far for a regular file, and not changed for a special file. But, |
3894 | before exiting the loop, it is set to a negative value if I/O | |
3895 | error occurs. */ | |
a1d2b64a | 3896 | how_much = 0; |
efdc16c9 | 3897 | |
6fdaa9a0 KH |
3898 | /* Total bytes inserted. */ |
3899 | inserted = 0; | |
efdc16c9 | 3900 | |
c8a6d68a | 3901 | /* Here, we don't do code conversion in the loop. It is done by |
db327c7e | 3902 | decode_coding_gap after all data are read into the buffer. */ |
1b978129 | 3903 | { |
ae19ba7c | 3904 | EMACS_INT gap_size = GAP_SIZE; |
efdc16c9 | 3905 | |
1b978129 GM |
3906 | while (how_much < total) |
3907 | { | |
5e570b75 | 3908 | /* try is reserved in some compilers (Microsoft C) */ |
ae19ba7c SM |
3909 | EMACS_INT trytry = min (total - how_much, READ_BUF_SIZE); |
3910 | EMACS_INT this; | |
570d7624 | 3911 | |
1b978129 GM |
3912 | if (not_regular) |
3913 | { | |
3914 | Lisp_Object val; | |
570d7624 | 3915 | |
1b978129 GM |
3916 | /* Maybe make more room. */ |
3917 | if (gap_size < trytry) | |
3918 | { | |
3919 | make_gap (total - gap_size); | |
3920 | gap_size = GAP_SIZE; | |
3921 | } | |
3922 | ||
3923 | /* Read from the file, capturing `quit'. When an | |
3924 | error occurs, end the loop, and arrange for a quit | |
3925 | to be signaled after decoding the text we read. */ | |
3926 | non_regular_fd = fd; | |
3927 | non_regular_inserted = inserted; | |
3928 | non_regular_nbytes = trytry; | |
3929 | val = internal_condition_case_1 (read_non_regular, Qnil, Qerror, | |
3930 | read_non_regular_quit); | |
3931 | if (NILP (val)) | |
3932 | { | |
3933 | read_quit = 1; | |
3934 | break; | |
3935 | } | |
3936 | ||
3937 | this = XINT (val); | |
3938 | } | |
3939 | else | |
3940 | { | |
3941 | /* Allow quitting out of the actual I/O. We don't make text | |
3942 | part of the buffer until all the reading is done, so a C-g | |
3943 | here doesn't do any harm. */ | |
3944 | immediate_quit = 1; | |
3945 | QUIT; | |
28c3eb5a | 3946 | this = emacs_read (fd, BEG_ADDR + PT_BYTE - BEG_BYTE + inserted, trytry); |
1b978129 GM |
3947 | immediate_quit = 0; |
3948 | } | |
efdc16c9 | 3949 | |
1b978129 GM |
3950 | if (this <= 0) |
3951 | { | |
3952 | how_much = this; | |
3953 | break; | |
3954 | } | |
3955 | ||
3956 | gap_size -= this; | |
3957 | ||
3958 | /* For a regular file, where TOTAL is the real size, | |
3959 | count HOW_MUCH to compare with it. | |
3960 | For a special file, where TOTAL is just a buffer size, | |
3961 | so don't bother counting in HOW_MUCH. | |
3962 | (INSERTED is where we count the number of characters inserted.) */ | |
3963 | if (! not_regular) | |
3964 | how_much += this; | |
3965 | inserted += this; | |
3966 | } | |
3967 | } | |
3968 | ||
68780e2a RS |
3969 | /* Now we have read all the file data into the gap. |
3970 | If it was empty, undo marking the buffer modified. */ | |
3971 | ||
3972 | if (inserted == 0) | |
3973 | { | |
6840d350 | 3974 | #ifdef CLASH_DETECTION |
68780e2a RS |
3975 | if (we_locked_file) |
3976 | unlock_file (current_buffer->file_truename); | |
6840d350 | 3977 | #endif |
68780e2a RS |
3978 | Vdeactivate_mark = old_Vdeactivate_mark; |
3979 | } | |
83c1cf6d RS |
3980 | else |
3981 | Vdeactivate_mark = Qt; | |
68780e2a | 3982 | |
1b978129 GM |
3983 | /* Make the text read part of the buffer. */ |
3984 | GAP_SIZE -= inserted; | |
3985 | GPT += inserted; | |
3986 | GPT_BYTE += inserted; | |
3987 | ZV += inserted; | |
3988 | ZV_BYTE += inserted; | |
3989 | Z += inserted; | |
3990 | Z_BYTE += inserted; | |
6fdaa9a0 | 3991 | |
c8a6d68a KH |
3992 | if (GAP_SIZE > 0) |
3993 | /* Put an anchor to ensure multi-byte form ends at gap. */ | |
3994 | *GPT_ADDR = 0; | |
d4b8687b | 3995 | |
68c45bf0 | 3996 | emacs_close (fd); |
6fdaa9a0 | 3997 | |
c8a6d68a KH |
3998 | /* Discard the unwind protect for closing the file. */ |
3999 | specpdl_ptr--; | |
6fdaa9a0 | 4000 | |
c8a6d68a KH |
4001 | if (how_much < 0) |
4002 | error ("IO error reading %s: %s", | |
d5db4077 | 4003 | SDATA (orig_filename), emacs_strerror (errno)); |
ec7adf26 | 4004 | |
f8569325 DL |
4005 | notfound: |
4006 | ||
db327c7e | 4007 | if (NILP (coding_system)) |
c8a6d68a | 4008 | { |
2df42e09 | 4009 | /* The coding system is not yet decided. Decide it by an |
dfe35e7b RS |
4010 | optimized method for handling `coding:' tag. |
4011 | ||
4012 | Note that we can get here only if the buffer was empty | |
4013 | before the insertion. */ | |
f736ffbf | 4014 | |
2df42e09 | 4015 | if (!NILP (Vcoding_system_for_read)) |
db327c7e | 4016 | coding_system = Vcoding_system_for_read; |
2df42e09 KH |
4017 | else |
4018 | { | |
98a7d268 KH |
4019 | /* Since we are sure that the current buffer was empty |
4020 | before the insertion, we can toggle | |
4021 | enable-multibyte-characters directly here without taking | |
9a7f80aa KH |
4022 | care of marker adjustment. By this way, we can run Lisp |
4023 | program safely before decoding the inserted text. */ | |
98a7d268 | 4024 | Lisp_Object unwind_data; |
9a7f80aa | 4025 | int count = SPECPDL_INDEX (); |
2df42e09 | 4026 | |
98a7d268 KH |
4027 | unwind_data = Fcons (current_buffer->enable_multibyte_characters, |
4028 | Fcons (current_buffer->undo_list, | |
4029 | Fcurrent_buffer ())); | |
2b89769e | 4030 | current_buffer->enable_multibyte_characters = Qnil; |
98a7d268 KH |
4031 | current_buffer->undo_list = Qt; |
4032 | record_unwind_protect (decide_coding_unwind, unwind_data); | |
4033 | ||
4034 | if (inserted > 0 && ! NILP (Vset_auto_coding_function)) | |
4035 | { | |
db327c7e | 4036 | coding_system = call2 (Vset_auto_coding_function, |
8f924df7 | 4037 | filename, make_number (inserted)); |
2df42e09 | 4038 | } |
f736ffbf | 4039 | |
db327c7e | 4040 | if (NILP (coding_system)) |
2df42e09 KH |
4041 | { |
4042 | /* If the coding system is not yet decided, check | |
4043 | file-coding-system-alist. */ | |
8f924df7 | 4044 | Lisp_Object args[6]; |
f736ffbf | 4045 | |
2df42e09 KH |
4046 | args[0] = Qinsert_file_contents, args[1] = orig_filename; |
4047 | args[2] = visit, args[3] = beg, args[4] = end, args[5] = Qnil; | |
8f924df7 KH |
4048 | coding_system = Ffind_operation_coding_system (6, args); |
4049 | if (CONSP (coding_system)) | |
4050 | coding_system = XCAR (coding_system); | |
f736ffbf | 4051 | } |
98a7d268 KH |
4052 | unbind_to (count, Qnil); |
4053 | inserted = Z_BYTE - BEG_BYTE; | |
2df42e09 | 4054 | } |
f736ffbf | 4055 | |
db327c7e KH |
4056 | if (NILP (coding_system)) |
4057 | coding_system = Qundecided; | |
4058 | else | |
4059 | CHECK_CODING_SYSTEM (coding_system); | |
f736ffbf | 4060 | |
db327c7e | 4061 | if (NILP (current_buffer->enable_multibyte_characters)) |
237a6fd2 | 4062 | /* We must suppress all character code conversion except for |
2df42e09 | 4063 | end-of-line conversion. */ |
db327c7e | 4064 | coding_system = raw_text_coding_system (coding_system); |
db327c7e KH |
4065 | setup_coding_system (coding_system, &coding); |
4066 | /* Ensure we set Vlast_coding_system_used. */ | |
4067 | set_coding_system = 1; | |
2df42e09 | 4068 | } |
f736ffbf | 4069 | |
db327c7e | 4070 | if (!NILP (visit)) |
8c3b9441 | 4071 | { |
db327c7e | 4072 | /* When we visit a file by raw-text, we change the buffer to |
9a7f80aa | 4073 | unibyte. */ |
db327c7e KH |
4074 | if (CODING_FOR_UNIBYTE (&coding) |
4075 | /* Can't do this if part of the buffer might be preserved. */ | |
4076 | && NILP (replace)) | |
4077 | /* Visiting a file with these coding system makes the buffer | |
4078 | unibyte. */ | |
4079 | current_buffer->enable_multibyte_characters = Qnil; | |
8c3b9441 KH |
4080 | } |
4081 | ||
8f924df7 | 4082 | coding.dst_multibyte = ! NILP (current_buffer->enable_multibyte_characters); |
5b359650 | 4083 | if (CODING_MAY_REQUIRE_DECODING (&coding) |
1c157f8d | 4084 | && (inserted > 0 || CODING_REQUIRE_FLUSHING (&coding))) |
2df42e09 | 4085 | { |
db327c7e KH |
4086 | move_gap_both (PT, PT_BYTE); |
4087 | GAP_SIZE += inserted; | |
4088 | ZV_BYTE -= inserted; | |
4089 | Z_BYTE -= inserted; | |
4090 | ZV -= inserted; | |
4091 | Z -= inserted; | |
4092 | decode_coding_gap (&coding, inserted, inserted); | |
4093 | inserted = coding.produced_char; | |
5b359650 | 4094 | coding_system = CODING_ID_NAME (coding.id); |
2df42e09 | 4095 | } |
db327c7e KH |
4096 | else if (inserted > 0) |
4097 | adjust_after_insert (PT, PT_BYTE, PT + inserted, PT_BYTE + inserted, | |
4098 | inserted); | |
570d7624 | 4099 | |
cf6d2357 RS |
4100 | /* Now INSERTED is measured in characters. */ |
4101 | ||
04e6f79c | 4102 | #ifdef DOS_NT |
2df42e09 KH |
4103 | /* Use the conversion type to determine buffer-file-type |
4104 | (find-buffer-file-type is now used to help determine the | |
4105 | conversion). */ | |
652a7e95 | 4106 | if ((VECTORP (CODING_ID_EOL_TYPE (coding.id)) |
f7ce9c0c | 4107 | || EQ (CODING_ID_EOL_TYPE (coding.id), Qunix)) |
2df42e09 KH |
4108 | && ! CODING_REQUIRE_DECODING (&coding)) |
4109 | current_buffer->buffer_file_type = Qt; | |
4110 | else | |
4111 | current_buffer->buffer_file_type = Qnil; | |
04e6f79c | 4112 | #endif |
570d7624 | 4113 | |
32f4334d | 4114 | handled: |
570d7624 | 4115 | |
db65a627 CY |
4116 | if (deferred_remove_unwind_protect) |
4117 | /* If requested above, discard the unwind protect for closing the | |
4118 | file. */ | |
4119 | specpdl_ptr--; | |
4120 | ||
265a9e55 | 4121 | if (!NILP (visit)) |
570d7624 | 4122 | { |
18a9f8d9 | 4123 | if (!EQ (current_buffer->undo_list, Qt) && !nochange) |
cfadd376 | 4124 | current_buffer->undo_list = Qnil; |
62bcf009 | 4125 | |
a7e82472 RS |
4126 | if (NILP (handler)) |
4127 | { | |
4128 | current_buffer->modtime = st.st_mtime; | |
58b963f7 | 4129 | current_buffer->modtime_size = st.st_size; |
b1d1b865 | 4130 | current_buffer->filename = orig_filename; |
a7e82472 | 4131 | } |
62bcf009 | 4132 | |
95385625 | 4133 | SAVE_MODIFF = MODIFF; |
0b5397c2 | 4134 | BUF_AUTOSAVE_MODIFF (current_buffer) = MODIFF; |
2acfd7ae | 4135 | XSETFASTINT (current_buffer->save_length, Z - BEG); |
570d7624 | 4136 | #ifdef CLASH_DETECTION |
32f4334d RS |
4137 | if (NILP (handler)) |
4138 | { | |
f471f4c2 RS |
4139 | if (!NILP (current_buffer->file_truename)) |
4140 | unlock_file (current_buffer->file_truename); | |
32f4334d RS |
4141 | unlock_file (filename); |
4142 | } | |
570d7624 | 4143 | #endif /* CLASH_DETECTION */ |
330bfe57 | 4144 | if (not_regular) |
24b1ddad KS |
4145 | xsignal2 (Qfile_error, |
4146 | build_string ("not a regular file"), orig_filename); | |
570d7624 JB |
4147 | } |
4148 | ||
b6426b03 | 4149 | if (set_coding_system) |
8f924df7 | 4150 | Vlast_coding_system_used = coding_system; |
b6426b03 | 4151 | |
2080470e | 4152 | if (! NILP (Ffboundp (Qafter_insert_file_set_coding))) |
b6426b03 | 4153 | { |
37a3c774 KH |
4154 | insval = call2 (Qafter_insert_file_set_coding, make_number (inserted), |
4155 | visit); | |
b6426b03 KH |
4156 | if (! NILP (insval)) |
4157 | { | |
4158 | CHECK_NUMBER (insval); | |
4159 | inserted = XFASTINT (insval); | |
4160 | } | |
4161 | } | |
4162 | ||
6420e80c | 4163 | /* Decode file format. */ |
c8a6d68a | 4164 | if (inserted > 0) |
0d420e88 | 4165 | { |
6420e80c | 4166 | /* Don't run point motion or modification hooks when decoding. */ |
6f2528d8 | 4167 | int count = SPECPDL_INDEX (); |
ae19ba7c | 4168 | EMACS_INT old_inserted = inserted; |
6f2528d8 MR |
4169 | specbind (Qinhibit_point_motion_hooks, Qt); |
4170 | specbind (Qinhibit_modification_hooks, Qt); | |
4171 | ||
6420e80c | 4172 | /* Save old undo list and don't record undo for decoding. */ |
6f2528d8 MR |
4173 | old_undo = current_buffer->undo_list; |
4174 | current_buffer->undo_list = Qt; | |
efdc16c9 | 4175 | |
6f2528d8 | 4176 | if (NILP (replace)) |
ed8e506f | 4177 | { |
6f2528d8 MR |
4178 | insval = call3 (Qformat_decode, |
4179 | Qnil, make_number (inserted), visit); | |
4180 | CHECK_NUMBER (insval); | |
4181 | inserted = XFASTINT (insval); | |
4182 | } | |
4183 | else | |
4184 | { | |
4185 | /* If REPLACE is non-nil and we succeeded in not replacing the | |
6420e80c AS |
4186 | beginning or end of the buffer text with the file's contents, |
4187 | call format-decode with `point' positioned at the beginning | |
4188 | of the buffer and `inserted' equalling the number of | |
4189 | characters in the buffer. Otherwise, format-decode might | |
4190 | fail to correctly analyze the beginning or end of the buffer. | |
4191 | Hence we temporarily save `point' and `inserted' here and | |
4192 | restore `point' iff format-decode did not insert or delete | |
4193 | any text. Otherwise we leave `point' at point-min. */ | |
ae19ba7c SM |
4194 | EMACS_INT opoint = PT; |
4195 | EMACS_INT opoint_byte = PT_BYTE; | |
4196 | EMACS_INT oinserted = ZV - BEGV; | |
cac4219c | 4197 | int ochars_modiff = CHARS_MODIFF; |
1f163f28 MA |
4198 | |
4199 | TEMP_SET_PT_BOTH (BEGV, BEGV_BYTE); | |
6f2528d8 MR |
4200 | insval = call3 (Qformat_decode, |
4201 | Qnil, make_number (oinserted), visit); | |
4202 | CHECK_NUMBER (insval); | |
cac4219c MR |
4203 | if (ochars_modiff == CHARS_MODIFF) |
4204 | /* format_decode didn't modify buffer's characters => move | |
4205 | point back to position before inserted text and leave | |
6420e80c | 4206 | value of inserted alone. */ |
6f2528d8 | 4207 | SET_PT_BOTH (opoint, opoint_byte); |
cac4219c MR |
4208 | else |
4209 | /* format_decode modified buffer's characters => consider | |
6420e80c | 4210 | entire buffer changed and leave point at point-min. */ |
cac4219c | 4211 | inserted = XFASTINT (insval); |
ed8e506f | 4212 | } |
efdc16c9 | 4213 | |
6f2528d8 | 4214 | /* For consistency with format-decode call these now iff inserted > 0 |
6420e80c | 4215 | (martin 2007-06-28). */ |
6f2528d8 MR |
4216 | p = Vafter_insert_file_functions; |
4217 | while (CONSP (p)) | |
4218 | { | |
4219 | if (NILP (replace)) | |
4220 | { | |
4221 | insval = call1 (XCAR (p), make_number (inserted)); | |
4222 | if (!NILP (insval)) | |
4223 | { | |
4224 | CHECK_NUMBER (insval); | |
4225 | inserted = XFASTINT (insval); | |
4226 | } | |
4227 | } | |
4228 | else | |
4229 | { | |
6420e80c AS |
4230 | /* For the rationale of this see the comment on |
4231 | format-decode above. */ | |
ae19ba7c SM |
4232 | EMACS_INT opoint = PT; |
4233 | EMACS_INT opoint_byte = PT_BYTE; | |
4234 | EMACS_INT oinserted = ZV - BEGV; | |
cac4219c | 4235 | int ochars_modiff = CHARS_MODIFF; |
1f163f28 | 4236 | |
6f2528d8 MR |
4237 | TEMP_SET_PT_BOTH (BEGV, BEGV_BYTE); |
4238 | insval = call1 (XCAR (p), make_number (oinserted)); | |
4239 | if (!NILP (insval)) | |
4240 | { | |
4241 | CHECK_NUMBER (insval); | |
cac4219c MR |
4242 | if (ochars_modiff == CHARS_MODIFF) |
4243 | /* after_insert_file_functions didn't modify | |
4244 | buffer's characters => move point back to | |
4245 | position before inserted text and leave value of | |
6420e80c | 4246 | inserted alone. */ |
6f2528d8 | 4247 | SET_PT_BOTH (opoint, opoint_byte); |
cac4219c MR |
4248 | else |
4249 | /* after_insert_file_functions did modify buffer's | |
4250 | characters => consider entire buffer changed and | |
6420e80c | 4251 | leave point at point-min. */ |
cac4219c | 4252 | inserted = XFASTINT (insval); |
6f2528d8 MR |
4253 | } |
4254 | } | |
4255 | ||
4256 | QUIT; | |
4257 | p = XCDR (p); | |
ed8e506f | 4258 | } |
efdc16c9 | 4259 | |
6f2528d8 MR |
4260 | if (NILP (visit)) |
4261 | { | |
6420e80c AS |
4262 | current_buffer->undo_list = old_undo; |
4263 | if (CONSP (old_undo) && inserted != old_inserted) | |
6f2528d8 | 4264 | { |
6420e80c AS |
4265 | /* Adjust the last undo record for the size change during |
4266 | the format conversion. */ | |
6f2528d8 | 4267 | Lisp_Object tem = XCAR (old_undo); |
6420e80c AS |
4268 | if (CONSP (tem) && INTEGERP (XCAR (tem)) |
4269 | && INTEGERP (XCDR (tem)) | |
4270 | && XFASTINT (XCDR (tem)) == PT + old_inserted) | |
4271 | XSETCDR (tem, make_number (PT + inserted)); | |
6f2528d8 MR |
4272 | } |
4273 | } | |
6f2528d8 | 4274 | else |
1bc99c9c | 4275 | /* If undo_list was Qt before, keep it that way. |
6420e80c | 4276 | Otherwise start with an empty undo_list. */ |
1bc99c9c | 4277 | current_buffer->undo_list = EQ (old_undo, Qt) ? Qt : Qnil; |
efdc16c9 | 4278 | |
6f2528d8 | 4279 | unbind_to (count, Qnil); |
0d420e88 BG |
4280 | } |
4281 | ||
0342d8c5 RS |
4282 | /* Call after-change hooks for the inserted text, aside from the case |
4283 | of normal visiting (not with REPLACE), which is done in a new buffer | |
4284 | "before" the buffer is changed. */ | |
c8a6d68a | 4285 | if (inserted > 0 && total > 0 |
0342d8c5 | 4286 | && (NILP (visit) || !NILP (replace))) |
ce51c54c KH |
4287 | { |
4288 | signal_after_change (PT, 0, inserted); | |
4289 | update_compositions (PT, PT, CHECK_BORDER); | |
4290 | } | |
b56567b5 | 4291 | |
f8569325 DL |
4292 | if (!NILP (visit) |
4293 | && current_buffer->modtime == -1) | |
4294 | { | |
4295 | /* If visiting nonexistent file, return nil. */ | |
4296 | report_file_error ("Opening input file", Fcons (orig_filename, Qnil)); | |
d6a3cc15 RS |
4297 | } |
4298 | ||
1b978129 GM |
4299 | if (read_quit) |
4300 | Fsignal (Qquit, Qnil); | |
4301 | ||
ec7adf26 | 4302 | /* ??? Retval needs to be dealt with in all cases consistently. */ |
a1d2b64a | 4303 | if (NILP (val)) |
b1d1b865 | 4304 | val = Fcons (orig_filename, |
a1d2b64a RS |
4305 | Fcons (make_number (inserted), |
4306 | Qnil)); | |
4307 | ||
4308 | RETURN_UNGCPRO (unbind_to (count, val)); | |
570d7624 | 4309 | } |
7fded690 | 4310 | \f |
f57e2426 | 4311 | static Lisp_Object build_annotations (Lisp_Object, Lisp_Object); |
d6a3cc15 | 4312 | |
199607e4 | 4313 | static Lisp_Object |
971de7fb | 4314 | build_annotations_unwind (Lisp_Object arg) |
6fc6f94b | 4315 | { |
67fbc0cb | 4316 | Vwrite_region_annotation_buffers = arg; |
6fc6f94b RS |
4317 | return Qnil; |
4318 | } | |
4319 | ||
7c82a4a9 SM |
4320 | /* Decide the coding-system to encode the data with. */ |
4321 | ||
c934586d | 4322 | static Lisp_Object |
dd4c5104 DN |
4323 | choose_write_coding_system (Lisp_Object start, Lisp_Object end, Lisp_Object filename, |
4324 | Lisp_Object append, Lisp_Object visit, Lisp_Object lockname, | |
4325 | struct coding_system *coding) | |
7c82a4a9 SM |
4326 | { |
4327 | Lisp_Object val; | |
75421805 | 4328 | Lisp_Object eol_parent = Qnil; |
7c82a4a9 | 4329 | |
6b61353c KH |
4330 | if (auto_saving |
4331 | && NILP (Fstring_equal (current_buffer->filename, | |
4332 | current_buffer->auto_save_file_name))) | |
75421805 KH |
4333 | { |
4334 | val = Qutf_8_emacs; | |
4335 | eol_parent = Qunix; | |
4336 | } | |
7c82a4a9 | 4337 | else if (!NILP (Vcoding_system_for_write)) |
42b01e1e KH |
4338 | { |
4339 | val = Vcoding_system_for_write; | |
4340 | if (coding_system_require_warning | |
4341 | && !NILP (Ffboundp (Vselect_safe_coding_system_function))) | |
4342 | /* Confirm that VAL can surely encode the current region. */ | |
4343 | val = call5 (Vselect_safe_coding_system_function, | |
4344 | start, end, Fcons (Qt, Fcons (val, Qnil)), | |
4345 | Qnil, filename); | |
4346 | } | |
7c82a4a9 SM |
4347 | else |
4348 | { | |
4349 | /* If the variable `buffer-file-coding-system' is set locally, | |
4350 | it means that the file was read with some kind of code | |
4351 | conversion or the variable is explicitly set by users. We | |
4352 | had better write it out with the same coding system even if | |
4353 | `enable-multibyte-characters' is nil. | |
4354 | ||
4355 | If it is not set locally, we anyway have to convert EOL | |
4356 | format if the default value of `buffer-file-coding-system' | |
4357 | tells that it is not Unix-like (LF only) format. */ | |
4358 | int using_default_coding = 0; | |
4359 | int force_raw_text = 0; | |
4360 | ||
4361 | val = current_buffer->buffer_file_coding_system; | |
4362 | if (NILP (val) | |
4363 | || NILP (Flocal_variable_p (Qbuffer_file_coding_system, Qnil))) | |
4364 | { | |
4365 | val = Qnil; | |
4366 | if (NILP (current_buffer->enable_multibyte_characters)) | |
4367 | force_raw_text = 1; | |
4368 | } | |
efdc16c9 | 4369 | |
7c82a4a9 SM |
4370 | if (NILP (val)) |
4371 | { | |
4372 | /* Check file-coding-system-alist. */ | |
4373 | Lisp_Object args[7], coding_systems; | |
4374 | ||
4375 | args[0] = Qwrite_region; args[1] = start; args[2] = end; | |
4376 | args[3] = filename; args[4] = append; args[5] = visit; | |
4377 | args[6] = lockname; | |
4378 | coding_systems = Ffind_operation_coding_system (7, args); | |
4379 | if (CONSP (coding_systems) && !NILP (XCDR (coding_systems))) | |
4380 | val = XCDR (coding_systems); | |
4381 | } | |
4382 | ||
c934586d | 4383 | if (NILP (val)) |
7c82a4a9 SM |
4384 | { |
4385 | /* If we still have not decided a coding system, use the | |
4386 | default value of buffer-file-coding-system. */ | |
4387 | val = current_buffer->buffer_file_coding_system; | |
4388 | using_default_coding = 1; | |
4389 | } | |
efdc16c9 | 4390 | |
db327c7e KH |
4391 | if (! NILP (val) && ! force_raw_text) |
4392 | { | |
4393 | Lisp_Object spec, attrs; | |
4394 | ||
4395 | CHECK_CODING_SYSTEM_GET_SPEC (val, spec); | |
4396 | attrs = AREF (spec, 0); | |
4397 | if (EQ (CODING_ATTR_TYPE (attrs), Qraw_text)) | |
4398 | force_raw_text = 1; | |
4399 | } | |
4400 | ||
7c82a4a9 SM |
4401 | if (!force_raw_text |
4402 | && !NILP (Ffboundp (Vselect_safe_coding_system_function))) | |
4403 | /* Confirm that VAL can surely encode the current region. */ | |
905a4276 PJ |
4404 | val = call5 (Vselect_safe_coding_system_function, |
4405 | start, end, val, Qnil, filename); | |
7c82a4a9 | 4406 | |
db327c7e KH |
4407 | /* If the decided coding-system doesn't specify end-of-line |
4408 | format, we use that of | |
4409 | `default-buffer-file-coding-system'. */ | |
c934586d KH |
4410 | if (! using_default_coding |
4411 | && ! NILP (buffer_defaults.buffer_file_coding_system)) | |
db327c7e KH |
4412 | val = (coding_inherit_eol_type |
4413 | (val, buffer_defaults.buffer_file_coding_system)); | |
7c82a4a9 | 4414 | |
db327c7e KH |
4415 | /* If we decide not to encode text, use `raw-text' or one of its |
4416 | subsidiaries. */ | |
7c82a4a9 | 4417 | if (force_raw_text) |
db327c7e | 4418 | val = raw_text_coding_system (val); |
7c82a4a9 SM |
4419 | } |
4420 | ||
75421805 | 4421 | val = coding_inherit_eol_type (val, eol_parent); |
c934586d | 4422 | setup_coding_system (val, coding); |
7c82a4a9 | 4423 | |
7c82a4a9 SM |
4424 | if (!STRINGP (start) && !NILP (current_buffer->selective_display)) |
4425 | coding->mode |= CODING_MODE_SELECTIVE_DISPLAY; | |
c934586d | 4426 | return val; |
7c82a4a9 SM |
4427 | } |
4428 | ||
de1d0127 | 4429 | DEFUN ("write-region", Fwrite_region, Swrite_region, 3, 7, |
8c1a1077 PJ |
4430 | "r\nFWrite region to file: \ni\ni\ni\np", |
4431 | doc: /* Write current region into specified file. | |
c2efea25 RS |
4432 | When called from a program, requires three arguments: |
4433 | START, END and FILENAME. START and END are normally buffer positions | |
4434 | specifying the part of the buffer to write. | |
4435 | If START is nil, that means to use the entire buffer contents. | |
4436 | If START is a string, then output that string to the file | |
4437 | instead of any buffer contents; END is ignored. | |
4438 | ||
8c1a1077 PJ |
4439 | Optional fourth argument APPEND if non-nil means |
4440 | append to existing file contents (if any). If it is an integer, | |
4441 | seek to that offset in the file before writing. | |
36e50520 | 4442 | Optional fifth argument VISIT, if t or a string, means |
8c1a1077 PJ |
4443 | set the last-save-file-modtime of buffer to this file's modtime |
4444 | and mark buffer not modified. | |
4445 | If VISIT is a string, it is a second file name; | |
4446 | the output goes to FILENAME, but the buffer is marked as visiting VISIT. | |
4447 | VISIT is also the file name to lock and unlock for clash detection. | |
4448 | If VISIT is neither t nor nil nor a string, | |
5f4e6aa9 | 4449 | that means do not display the \"Wrote file\" message. |
8c1a1077 PJ |
4450 | The optional sixth arg LOCKNAME, if non-nil, specifies the name to |
4451 | use for locking and unlocking, overriding FILENAME and VISIT. | |
4452 | The optional seventh arg MUSTBENEW, if non-nil, insists on a check | |
4453 | for an existing file with the same name. If MUSTBENEW is `excl', | |
4454 | that means to get an error if the file already exists; never overwrite. | |
4455 | If MUSTBENEW is neither nil nor `excl', that means ask for | |
4456 | confirmation before overwriting, but do go ahead and overwrite the file | |
4457 | if the user confirms. | |
8c1a1077 PJ |
4458 | |
4459 | This does code conversion according to the value of | |
4460 | `coding-system-for-write', `buffer-file-coding-system', or | |
4461 | `file-coding-system-alist', and sets the variable | |
aacd8ba1 GM |
4462 | `last-coding-system-used' to the coding system actually used. |
4463 | ||
4464 | This calls `write-region-annotate-functions' at the start, and | |
4465 | `write-region-post-annotation-function' at the end. */) | |
5842a27b | 4466 | (Lisp_Object start, Lisp_Object end, Lisp_Object filename, Lisp_Object append, Lisp_Object visit, Lisp_Object lockname, Lisp_Object mustbenew) |
570d7624 JB |
4467 | { |
4468 | register int desc; | |
4469 | int failure; | |
6bbd7a29 | 4470 | int save_errno = 0; |
19290c65 | 4471 | const unsigned char *fn; |
570d7624 | 4472 | struct stat st; |
aed13378 | 4473 | int count = SPECPDL_INDEX (); |
6fc6f94b | 4474 | int count1; |
3eac9910 | 4475 | Lisp_Object handler; |
4ad827c5 | 4476 | Lisp_Object visit_file; |
65b7d3e7 | 4477 | Lisp_Object annotations; |
b1d1b865 | 4478 | Lisp_Object encoded_filename; |
d3a67486 SM |
4479 | int visiting = (EQ (visit, Qt) || STRINGP (visit)); |
4480 | int quietly = !NILP (visit); | |
7204a979 | 4481 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5; |
6fc6f94b | 4482 | struct buffer *given_buffer; |
5e570b75 | 4483 | #ifdef DOS_NT |
fa228724 | 4484 | int buffer_file_type = O_BINARY; |
5e570b75 | 4485 | #endif /* DOS_NT */ |
6fdaa9a0 | 4486 | struct coding_system coding; |
570d7624 | 4487 | |
d3a67486 | 4488 | if (current_buffer->base_buffer && visiting) |
95385625 RS |
4489 | error ("Cannot do file visiting in an indirect buffer"); |
4490 | ||
561cb8e1 | 4491 | if (!NILP (start) && !STRINGP (start)) |
570d7624 JB |
4492 | validate_region (&start, &end); |
4493 | ||
95c1c901 | 4494 | visit_file = Qnil; |
59fac292 | 4495 | GCPRO5 (start, filename, visit, visit_file, lockname); |
b56567b5 | 4496 | |
570d7624 | 4497 | filename = Fexpand_file_name (filename, Qnil); |
de1d0127 | 4498 | |
236a12f2 | 4499 | if (!NILP (mustbenew) && !EQ (mustbenew, Qexcl)) |
b8b29dc9 | 4500 | barf_or_query_if_file_exists (filename, "overwrite", 1, 0, 1); |
de1d0127 | 4501 | |
561cb8e1 | 4502 | if (STRINGP (visit)) |
e5176bae | 4503 | visit_file = Fexpand_file_name (visit, Qnil); |
4ad827c5 RS |
4504 | else |
4505 | visit_file = filename; | |
4506 | ||
7204a979 RS |
4507 | if (NILP (lockname)) |
4508 | lockname = visit_file; | |
4509 | ||
65b7d3e7 RS |
4510 | annotations = Qnil; |
4511 | ||
32f4334d RS |
4512 | /* If the file name has special constructs in it, |
4513 | call the corresponding file handler. */ | |
49307295 | 4514 | handler = Ffind_file_name_handler (filename, Qwrite_region); |
b56ad927 | 4515 | /* If FILENAME has no handler, see if VISIT has one. */ |
93c30b5f | 4516 | if (NILP (handler) && STRINGP (visit)) |
199607e4 | 4517 | handler = Ffind_file_name_handler (visit, Qwrite_region); |
3eac9910 | 4518 | |
32f4334d RS |
4519 | if (!NILP (handler)) |
4520 | { | |
32f4334d | 4521 | Lisp_Object val; |
51cf6d37 RS |
4522 | val = call6 (handler, Qwrite_region, start, end, |
4523 | filename, append, visit); | |
32f4334d | 4524 | |
d6a3cc15 | 4525 | if (visiting) |
32f4334d | 4526 | { |
95385625 | 4527 | SAVE_MODIFF = MODIFF; |
090101cf | 4528 | XSETFASTINT (current_buffer->save_length, Z - BEG); |
3b7792ed | 4529 | current_buffer->filename = visit_file; |
32f4334d | 4530 | } |
09121adc | 4531 | UNGCPRO; |
32f4334d RS |
4532 | return val; |
4533 | } | |
4534 | ||
4a38de71 KH |
4535 | record_unwind_protect (save_restriction_restore, save_restriction_save ()); |
4536 | ||
561cb8e1 RS |
4537 | /* Special kludge to simplify auto-saving. */ |
4538 | if (NILP (start)) | |
4539 | { | |
6b3d752c SM |
4540 | /* Do it later, so write-region-annotate-function can work differently |
4541 | if we save "the buffer" vs "a region". | |
4542 | This is useful in tar-mode. --Stef | |
2acfd7ae | 4543 | XSETFASTINT (start, BEG); |
6b3d752c | 4544 | XSETFASTINT (end, Z); */ |
4a38de71 | 4545 | Fwiden (); |
561cb8e1 RS |
4546 | } |
4547 | ||
67fbc0cb CY |
4548 | record_unwind_protect (build_annotations_unwind, |
4549 | Vwrite_region_annotation_buffers); | |
4550 | Vwrite_region_annotation_buffers = Fcons (Fcurrent_buffer (), Qnil); | |
aed13378 | 4551 | count1 = SPECPDL_INDEX (); |
6fc6f94b RS |
4552 | |
4553 | given_buffer = current_buffer; | |
bf3428a1 RS |
4554 | |
4555 | if (!STRINGP (start)) | |
236a12f2 | 4556 | { |
bf3428a1 RS |
4557 | annotations = build_annotations (start, end); |
4558 | ||
4559 | if (current_buffer != given_buffer) | |
4560 | { | |
4561 | XSETFASTINT (start, BEGV); | |
4562 | XSETFASTINT (end, ZV); | |
4563 | } | |
236a12f2 SM |
4564 | } |
4565 | ||
6b3d752c SM |
4566 | if (NILP (start)) |
4567 | { | |
4568 | XSETFASTINT (start, BEGV); | |
4569 | XSETFASTINT (end, ZV); | |
4570 | } | |
4571 | ||
236a12f2 SM |
4572 | UNGCPRO; |
4573 | ||
4574 | GCPRO5 (start, filename, annotations, visit_file, lockname); | |
4575 | ||
59fac292 SM |
4576 | /* Decide the coding-system to encode the data with. |
4577 | We used to make this choice before calling build_annotations, but that | |
4578 | leads to problems when a write-annotate-function takes care of | |
4579 | unsavable chars (as was the case with X-Symbol). */ | |
c934586d KH |
4580 | Vlast_coding_system_used |
4581 | = choose_write_coding_system (start, end, filename, | |
4582 | append, visit, lockname, &coding); | |
d6a3cc15 | 4583 | |
570d7624 JB |
4584 | #ifdef CLASH_DETECTION |
4585 | if (!auto_saving) | |
67fbc0cb | 4586 | lock_file (lockname); |
570d7624 JB |
4587 | #endif /* CLASH_DETECTION */ |
4588 | ||
b1d1b865 RS |
4589 | encoded_filename = ENCODE_FILE (filename); |
4590 | ||
d5db4077 | 4591 | fn = SDATA (encoded_filename); |
570d7624 | 4592 | desc = -1; |
265a9e55 | 4593 | if (!NILP (append)) |
5e570b75 | 4594 | #ifdef DOS_NT |
68c45bf0 | 4595 | desc = emacs_open (fn, O_WRONLY | buffer_file_type, 0); |
5e570b75 | 4596 | #else /* not DOS_NT */ |
68c45bf0 | 4597 | desc = emacs_open (fn, O_WRONLY, 0); |
5e570b75 | 4598 | #endif /* not DOS_NT */ |
570d7624 | 4599 | |
b1d1b865 | 4600 | if (desc < 0 && (NILP (append) || errno == ENOENT)) |
5e570b75 | 4601 | #ifdef DOS_NT |
68c45bf0 | 4602 | desc = emacs_open (fn, |
95522746 GM |
4603 | O_WRONLY | O_CREAT | buffer_file_type |
4604 | | (EQ (mustbenew, Qexcl) ? O_EXCL : O_TRUNC), | |
68c45bf0 | 4605 | S_IREAD | S_IWRITE); |
5e570b75 | 4606 | #else /* not DOS_NT */ |
68c45bf0 | 4607 | desc = emacs_open (fn, O_WRONLY | O_TRUNC | O_CREAT |
7c752c80 | 4608 | | (EQ (mustbenew, Qexcl) ? O_EXCL : 0), |
68c45bf0 | 4609 | auto_saving ? auto_save_mode_bits : 0666); |
5e570b75 | 4610 | #endif /* not DOS_NT */ |
570d7624 JB |
4611 | |
4612 | if (desc < 0) | |
4613 | { | |
4614 | #ifdef CLASH_DETECTION | |
4615 | save_errno = errno; | |
7204a979 | 4616 | if (!auto_saving) unlock_file (lockname); |
570d7624 JB |
4617 | errno = save_errno; |
4618 | #endif /* CLASH_DETECTION */ | |
43fb7d9a | 4619 | UNGCPRO; |
570d7624 JB |
4620 | report_file_error ("Opening output file", Fcons (filename, Qnil)); |
4621 | } | |
4622 | ||
4623 | record_unwind_protect (close_file_unwind, make_number (desc)); | |
4624 | ||
c1c4693e | 4625 | if (!NILP (append) && !NILP (Ffile_regular_p (filename))) |
43fb7d9a DL |
4626 | { |
4627 | long ret; | |
efdc16c9 | 4628 | |
43fb7d9a DL |
4629 | if (NUMBERP (append)) |
4630 | ret = lseek (desc, XINT (append), 1); | |
4631 | else | |
4632 | ret = lseek (desc, 0, 2); | |
4633 | if (ret < 0) | |
4634 | { | |
570d7624 | 4635 | #ifdef CLASH_DETECTION |
43fb7d9a | 4636 | if (!auto_saving) unlock_file (lockname); |
570d7624 | 4637 | #endif /* CLASH_DETECTION */ |
43fb7d9a DL |
4638 | UNGCPRO; |
4639 | report_file_error ("Lseek error", Fcons (filename, Qnil)); | |
4640 | } | |
4641 | } | |
efdc16c9 | 4642 | |
43fb7d9a | 4643 | UNGCPRO; |
570d7624 | 4644 | |
570d7624 JB |
4645 | failure = 0; |
4646 | immediate_quit = 1; | |
4647 | ||
561cb8e1 | 4648 | if (STRINGP (start)) |
570d7624 | 4649 | { |
d5db4077 | 4650 | failure = 0 > a_write (desc, start, 0, SCHARS (start), |
ce51c54c | 4651 | &annotations, &coding); |
570d7624 JB |
4652 | save_errno = errno; |
4653 | } | |
4654 | else if (XINT (start) != XINT (end)) | |
4655 | { | |
db327c7e KH |
4656 | failure = 0 > a_write (desc, Qnil, |
4657 | XINT (start), XINT (end) - XINT (start), | |
4658 | &annotations, &coding); | |
4659 | save_errno = errno; | |
69f6e679 RS |
4660 | } |
4661 | else | |
4662 | { | |
4663 | /* If file was empty, still need to write the annotations */ | |
c8a6d68a | 4664 | coding.mode |= CODING_MODE_LAST_BLOCK; |
ce51c54c | 4665 | failure = 0 > a_write (desc, Qnil, XINT (end), 0, &annotations, &coding); |
6fdaa9a0 KH |
4666 | save_errno = errno; |
4667 | } | |
4668 | ||
c8a6d68a KH |
4669 | if (CODING_REQUIRE_FLUSHING (&coding) |
4670 | && !(coding.mode & CODING_MODE_LAST_BLOCK) | |
1354debd | 4671 | && ! failure) |
6fdaa9a0 KH |
4672 | { |
4673 | /* We have to flush out a data. */ | |
c8a6d68a | 4674 | coding.mode |= CODING_MODE_LAST_BLOCK; |
db327c7e | 4675 | failure = 0 > e_write (desc, Qnil, 1, 1, &coding); |
69f6e679 | 4676 | save_errno = errno; |
570d7624 JB |
4677 | } |
4678 | ||
4679 | immediate_quit = 0; | |
4680 | ||
6e23c83e | 4681 | #ifdef HAVE_FSYNC |
570d7624 JB |
4682 | /* Note fsync appears to change the modtime on BSD4.2 (both vax and sun). |
4683 | Disk full in NFS may be reported here. */ | |
1daffa1c RS |
4684 | /* mib says that closing the file will try to write as fast as NFS can do |
4685 | it, and that means the fsync here is not crucial for autosave files. */ | |
ccf61795 | 4686 | if (!auto_saving && !write_region_inhibit_fsync && fsync (desc) < 0) |
cb33c142 | 4687 | { |
6cff77fd AS |
4688 | /* If fsync fails with EINTR, don't treat that as serious. Also |
4689 | ignore EINVAL which happens when fsync is not supported on this | |
4690 | file. */ | |
4691 | if (errno != EINTR && errno != EINVAL) | |
cb33c142 KH |
4692 | failure = 1, save_errno = errno; |
4693 | } | |
570d7624 JB |
4694 | #endif |
4695 | ||
570d7624 | 4696 | /* NFS can report a write failure now. */ |
68c45bf0 | 4697 | if (emacs_close (desc) < 0) |
570d7624 JB |
4698 | failure = 1, save_errno = errno; |
4699 | ||
570d7624 | 4700 | stat (fn, &st); |
67fbc0cb | 4701 | |
6fc6f94b RS |
4702 | /* Discard the unwind protect for close_file_unwind. */ |
4703 | specpdl_ptr = specpdl + count1; | |
67fbc0cb CY |
4704 | |
4705 | /* Call write-region-post-annotation-function. */ | |
294fa707 | 4706 | while (CONSP (Vwrite_region_annotation_buffers)) |
67fbc0cb CY |
4707 | { |
4708 | Lisp_Object buf = XCAR (Vwrite_region_annotation_buffers); | |
4709 | if (!NILP (Fbuffer_live_p (buf))) | |
4710 | { | |
4711 | Fset_buffer (buf); | |
4712 | if (FUNCTIONP (Vwrite_region_post_annotation_function)) | |
4713 | call0 (Vwrite_region_post_annotation_function); | |
4714 | } | |
4715 | Vwrite_region_annotation_buffers | |
4716 | = XCDR (Vwrite_region_annotation_buffers); | |
4717 | } | |
4718 | ||
4719 | unbind_to (count, Qnil); | |
570d7624 JB |
4720 | |
4721 | #ifdef CLASH_DETECTION | |
4722 | if (!auto_saving) | |
7204a979 | 4723 | unlock_file (lockname); |
570d7624 JB |
4724 | #endif /* CLASH_DETECTION */ |
4725 | ||
4726 | /* Do this before reporting IO error | |
4727 | to avoid a "file has changed on disk" warning on | |
4728 | next attempt to save. */ | |
d6a3cc15 | 4729 | if (visiting) |
58b963f7 SM |
4730 | { |
4731 | current_buffer->modtime = st.st_mtime; | |
4732 | current_buffer->modtime_size = st.st_size; | |
4733 | } | |
570d7624 JB |
4734 | |
4735 | if (failure) | |
d5db4077 | 4736 | error ("IO error writing %s: %s", SDATA (filename), |
68c45bf0 | 4737 | emacs_strerror (save_errno)); |
570d7624 | 4738 | |
d6a3cc15 | 4739 | if (visiting) |
570d7624 | 4740 | { |
95385625 | 4741 | SAVE_MODIFF = MODIFF; |
090101cf | 4742 | XSETFASTINT (current_buffer->save_length, Z - BEG); |
3b7792ed | 4743 | current_buffer->filename = visit_file; |
f4226e89 | 4744 | update_mode_lines++; |
570d7624 | 4745 | } |
d6a3cc15 | 4746 | else if (quietly) |
6b61353c KH |
4747 | { |
4748 | if (auto_saving | |
4749 | && ! NILP (Fstring_equal (current_buffer->filename, | |
4750 | current_buffer->auto_save_file_name))) | |
4751 | SAVE_MODIFF = MODIFF; | |
4752 | ||
4753 | return Qnil; | |
4754 | } | |
570d7624 JB |
4755 | |
4756 | if (!auto_saving) | |
6b61353c | 4757 | message_with_string ((INTEGERP (append) |
0c328a0e RS |
4758 | ? "Updated %s" |
4759 | : ! NILP (append) | |
4760 | ? "Added to %s" | |
4761 | : "Wrote %s"), | |
4762 | visit_file, 1); | |
570d7624 JB |
4763 | |
4764 | return Qnil; | |
4765 | } | |
ec7adf26 | 4766 | \f |
dd4c5104 | 4767 | Lisp_Object merge (Lisp_Object, Lisp_Object, Lisp_Object); |
d6a3cc15 RS |
4768 | |
4769 | DEFUN ("car-less-than-car", Fcar_less_than_car, Scar_less_than_car, 2, 2, 0, | |
8c1a1077 | 4770 | doc: /* Return t if (car A) is numerically less than (car B). */) |
5842a27b | 4771 | (Lisp_Object a, Lisp_Object b) |
d6a3cc15 RS |
4772 | { |
4773 | return Flss (Fcar (a), Fcar (b)); | |
4774 | } | |
4775 | ||
4776 | /* Build the complete list of annotations appropriate for writing out | |
4777 | the text between START and END, by calling all the functions in | |
6fc6f94b RS |
4778 | write-region-annotate-functions and merging the lists they return. |
4779 | If one of these functions switches to a different buffer, we assume | |
4780 | that buffer contains altered text. Therefore, the caller must | |
4781 | make sure to restore the current buffer in all cases, | |
4782 | as save-excursion would do. */ | |
d6a3cc15 RS |
4783 | |
4784 | static Lisp_Object | |
971de7fb | 4785 | build_annotations (Lisp_Object start, Lisp_Object end) |
d6a3cc15 RS |
4786 | { |
4787 | Lisp_Object annotations; | |
4788 | Lisp_Object p, res; | |
4789 | struct gcpro gcpro1, gcpro2; | |
0a20b684 | 4790 | Lisp_Object original_buffer; |
bd235610 | 4791 | int i, used_global = 0; |
0a20b684 RS |
4792 | |
4793 | XSETBUFFER (original_buffer, current_buffer); | |
d6a3cc15 RS |
4794 | |
4795 | annotations = Qnil; | |
4796 | p = Vwrite_region_annotate_functions; | |
4797 | GCPRO2 (annotations, p); | |
28c3eb5a | 4798 | while (CONSP (p)) |
d6a3cc15 | 4799 | { |
6fc6f94b | 4800 | struct buffer *given_buffer = current_buffer; |
bd235610 SM |
4801 | if (EQ (Qt, XCAR (p)) && !used_global) |
4802 | { /* Use the global value of the hook. */ | |
4803 | Lisp_Object arg[2]; | |
4804 | used_global = 1; | |
4805 | arg[0] = Fdefault_value (Qwrite_region_annotate_functions); | |
4806 | arg[1] = XCDR (p); | |
4807 | p = Fappend (2, arg); | |
4808 | continue; | |
4809 | } | |
6fc6f94b | 4810 | Vwrite_region_annotations_so_far = annotations; |
28c3eb5a | 4811 | res = call2 (XCAR (p), start, end); |
6fc6f94b RS |
4812 | /* If the function makes a different buffer current, |
4813 | assume that means this buffer contains altered text to be output. | |
4814 | Reset START and END from the buffer bounds | |
4815 | and discard all previous annotations because they should have | |
4816 | been dealt with by this function. */ | |
4817 | if (current_buffer != given_buffer) | |
4818 | { | |
67fbc0cb CY |
4819 | Vwrite_region_annotation_buffers |
4820 | = Fcons (Fcurrent_buffer (), | |
4821 | Vwrite_region_annotation_buffers); | |
3cf29f61 RS |
4822 | XSETFASTINT (start, BEGV); |
4823 | XSETFASTINT (end, ZV); | |
6fc6f94b RS |
4824 | annotations = Qnil; |
4825 | } | |
d6a3cc15 RS |
4826 | Flength (res); /* Check basic validity of return value */ |
4827 | annotations = merge (annotations, res, Qcar_less_than_car); | |
28c3eb5a | 4828 | p = XCDR (p); |
d6a3cc15 | 4829 | } |
0d420e88 BG |
4830 | |
4831 | /* Now do the same for annotation functions implied by the file-format */ | |
f844ba4e LT |
4832 | if (auto_saving && (!EQ (current_buffer->auto_save_file_format, Qt))) |
4833 | p = current_buffer->auto_save_file_format; | |
0d420e88 BG |
4834 | else |
4835 | p = current_buffer->file_format; | |
28c3eb5a | 4836 | for (i = 0; CONSP (p); p = XCDR (p), ++i) |
0d420e88 BG |
4837 | { |
4838 | struct buffer *given_buffer = current_buffer; | |
efdc16c9 | 4839 | |
0d420e88 | 4840 | Vwrite_region_annotations_so_far = annotations; |
532ed661 GM |
4841 | |
4842 | /* Value is either a list of annotations or nil if the function | |
4843 | has written annotations to a temporary buffer, which is now | |
4844 | current. */ | |
28c3eb5a | 4845 | res = call5 (Qformat_annotate_function, XCAR (p), start, end, |
532ed661 | 4846 | original_buffer, make_number (i)); |
0d420e88 BG |
4847 | if (current_buffer != given_buffer) |
4848 | { | |
3cf29f61 RS |
4849 | XSETFASTINT (start, BEGV); |
4850 | XSETFASTINT (end, ZV); | |
0d420e88 BG |
4851 | annotations = Qnil; |
4852 | } | |
efdc16c9 | 4853 | |
532ed661 GM |
4854 | if (CONSP (res)) |
4855 | annotations = merge (annotations, res, Qcar_less_than_car); | |
0d420e88 | 4856 | } |
6fdaa9a0 | 4857 | |
236a12f2 SM |
4858 | UNGCPRO; |
4859 | return annotations; | |
4860 | } | |
4861 | ||
ec7adf26 | 4862 | \f |
ce51c54c KH |
4863 | /* Write to descriptor DESC the NCHARS chars starting at POS of STRING. |
4864 | If STRING is nil, POS is the character position in the current buffer. | |
d6a3cc15 | 4865 | Intersperse with them the annotations from *ANNOT |
ce51c54c | 4866 | which fall within the range of POS to POS + NCHARS, |
d6a3cc15 RS |
4867 | each at its appropriate position. |
4868 | ||
ec7adf26 RS |
4869 | We modify *ANNOT by discarding elements as we use them up. |
4870 | ||
d6a3cc15 RS |
4871 | The return value is negative in case of system call failure. */ |
4872 | ||
ec7adf26 | 4873 | static int |
971de7fb | 4874 | a_write (int desc, Lisp_Object string, int pos, register int nchars, Lisp_Object *annot, struct coding_system *coding) |
d6a3cc15 RS |
4875 | { |
4876 | Lisp_Object tem; | |
4877 | int nextpos; | |
ce51c54c | 4878 | int lastpos = pos + nchars; |
d6a3cc15 | 4879 | |
eb15aa18 | 4880 | while (NILP (*annot) || CONSP (*annot)) |
d6a3cc15 RS |
4881 | { |
4882 | tem = Fcar_safe (Fcar (*annot)); | |
ce51c54c | 4883 | nextpos = pos - 1; |
ec7adf26 | 4884 | if (INTEGERP (tem)) |
ce51c54c | 4885 | nextpos = XFASTINT (tem); |
ec7adf26 RS |
4886 | |
4887 | /* If there are no more annotations in this range, | |
4888 | output the rest of the range all at once. */ | |
ce51c54c KH |
4889 | if (! (nextpos >= pos && nextpos <= lastpos)) |
4890 | return e_write (desc, string, pos, lastpos, coding); | |
ec7adf26 RS |
4891 | |
4892 | /* Output buffer text up to the next annotation's position. */ | |
ce51c54c | 4893 | if (nextpos > pos) |
d6a3cc15 | 4894 | { |
055a28c9 | 4895 | if (0 > e_write (desc, string, pos, nextpos, coding)) |
d6a3cc15 | 4896 | return -1; |
ce51c54c | 4897 | pos = nextpos; |
d6a3cc15 | 4898 | } |
ec7adf26 | 4899 | /* Output the annotation. */ |
d6a3cc15 RS |
4900 | tem = Fcdr (Fcar (*annot)); |
4901 | if (STRINGP (tem)) | |
4902 | { | |
d5db4077 | 4903 | if (0 > e_write (desc, tem, 0, SCHARS (tem), coding)) |
d6a3cc15 RS |
4904 | return -1; |
4905 | } | |
4906 | *annot = Fcdr (*annot); | |
4907 | } | |
dfcf069d | 4908 | return 0; |
d6a3cc15 RS |
4909 | } |
4910 | ||
6fdaa9a0 | 4911 | |
ce51c54c KH |
4912 | /* Write text in the range START and END into descriptor DESC, |
4913 | encoding them with coding system CODING. If STRING is nil, START | |
4914 | and END are character positions of the current buffer, else they | |
4915 | are indexes to the string STRING. */ | |
ec7adf26 RS |
4916 | |
4917 | static int | |
971de7fb | 4918 | e_write (int desc, Lisp_Object string, int start, int end, struct coding_system *coding) |
570d7624 | 4919 | { |
ce51c54c KH |
4920 | if (STRINGP (string)) |
4921 | { | |
db327c7e | 4922 | start = 0; |
8f924df7 | 4923 | end = SCHARS (string); |
ce51c54c | 4924 | } |
570d7624 | 4925 | |
6fdaa9a0 KH |
4926 | /* We used to have a code for handling selective display here. But, |
4927 | now it is handled within encode_coding. */ | |
01ca97a2 KH |
4928 | |
4929 | while (start < end) | |
570d7624 | 4930 | { |
01ca97a2 | 4931 | if (STRINGP (string)) |
6ad568dd | 4932 | { |
01ca97a2 KH |
4933 | coding->src_multibyte = SCHARS (string) < SBYTES (string); |
4934 | if (CODING_REQUIRE_ENCODING (coding)) | |
4935 | { | |
4936 | encode_coding_object (coding, string, | |
4937 | start, string_char_to_byte (string, start), | |
4938 | end, string_char_to_byte (string, end), Qt); | |
4939 | } | |
4940 | else | |
4941 | { | |
4942 | coding->dst_object = string; | |
4943 | coding->consumed_char = SCHARS (string); | |
4944 | coding->produced = SBYTES (string); | |
4945 | } | |
6ad568dd | 4946 | } |
db327c7e | 4947 | else |
6ad568dd | 4948 | { |
01ca97a2 KH |
4949 | int start_byte = CHAR_TO_BYTE (start); |
4950 | int end_byte = CHAR_TO_BYTE (end); | |
b4132433 | 4951 | |
01ca97a2 KH |
4952 | coding->src_multibyte = (end - start) < (end_byte - start_byte); |
4953 | if (CODING_REQUIRE_ENCODING (coding)) | |
4954 | { | |
4955 | encode_coding_object (coding, Fcurrent_buffer (), | |
4956 | start, start_byte, end, end_byte, Qt); | |
4957 | } | |
4958 | else | |
4959 | { | |
4960 | coding->dst_object = Qnil; | |
4961 | coding->dst_pos_byte = start_byte; | |
4962 | if (start >= GPT || end <= GPT) | |
4963 | { | |
4964 | coding->consumed_char = end - start; | |
4965 | coding->produced = end_byte - start_byte; | |
4966 | } | |
4967 | else | |
4968 | { | |
4969 | coding->consumed_char = GPT - start; | |
4970 | coding->produced = GPT_BYTE - start_byte; | |
4971 | } | |
4972 | } | |
c185d744 | 4973 | } |
01ca97a2 KH |
4974 | |
4975 | if (coding->produced > 0) | |
c185d744 | 4976 | { |
01ca97a2 KH |
4977 | coding->produced -= |
4978 | emacs_write (desc, | |
4979 | STRINGP (coding->dst_object) | |
4980 | ? SDATA (coding->dst_object) | |
4981 | : BYTE_POS_ADDR (coding->dst_pos_byte), | |
4982 | coding->produced); | |
4983 | ||
4984 | if (coding->produced) | |
4985 | return -1; | |
570d7624 | 4986 | } |
01ca97a2 | 4987 | start += coding->consumed_char; |
c185d744 KH |
4988 | } |
4989 | ||
4990 | return 0; | |
570d7624 | 4991 | } |
ec7adf26 | 4992 | \f |
570d7624 | 4993 | DEFUN ("verify-visited-file-modtime", Fverify_visited_file_modtime, |
ec1b9b17 | 4994 | Sverify_visited_file_modtime, 0, 1, 0, |
8c1a1077 | 4995 | doc: /* Return t if last mod time of BUF's visited file matches what BUF records. |
6b61353c | 4996 | This means that the file has not been changed since it was visited or saved. |
ec1b9b17 | 4997 | If BUF is omitted or nil, it defaults to the current buffer. |
6b61353c | 4998 | See Info node `(elisp)Modification Time' for more details. */) |
5842a27b | 4999 | (Lisp_Object buf) |
570d7624 JB |
5000 | { |
5001 | struct buffer *b; | |
5002 | struct stat st; | |
32f4334d | 5003 | Lisp_Object handler; |
b1d1b865 | 5004 | Lisp_Object filename; |
570d7624 | 5005 | |
ec1b9b17 GM |
5006 | if (NILP (buf)) |
5007 | b = current_buffer; | |
5008 | else | |
5009 | { | |
5010 | CHECK_BUFFER (buf); | |
5011 | b = XBUFFER (buf); | |
5012 | } | |
570d7624 | 5013 | |
93c30b5f | 5014 | if (!STRINGP (b->filename)) return Qt; |
570d7624 JB |
5015 | if (b->modtime == 0) return Qt; |
5016 | ||
32f4334d RS |
5017 | /* If the file name has special constructs in it, |
5018 | call the corresponding file handler. */ | |
49307295 KH |
5019 | handler = Ffind_file_name_handler (b->filename, |
5020 | Qverify_visited_file_modtime); | |
32f4334d | 5021 | if (!NILP (handler)) |
09121adc | 5022 | return call2 (handler, Qverify_visited_file_modtime, buf); |
32f4334d | 5023 | |
b1d1b865 RS |
5024 | filename = ENCODE_FILE (b->filename); |
5025 | ||
d5db4077 | 5026 | if (stat (SDATA (filename), &st) < 0) |
570d7624 JB |
5027 | { |
5028 | /* If the file doesn't exist now and didn't exist before, | |
5029 | we say that it isn't modified, provided the error is a tame one. */ | |
5030 | if (errno == ENOENT || errno == EACCES || errno == ENOTDIR) | |
5031 | st.st_mtime = -1; | |
5032 | else | |
5033 | st.st_mtime = 0; | |
5034 | } | |
58b963f7 SM |
5035 | if ((st.st_mtime == b->modtime |
5036 | /* If both are positive, accept them if they are off by one second. */ | |
5037 | || (st.st_mtime > 0 && b->modtime > 0 | |
5038 | && (st.st_mtime == b->modtime + 1 | |
5039 | || st.st_mtime == b->modtime - 1))) | |
5040 | && (st.st_size == b->modtime_size | |
5041 | || b->modtime_size < 0)) | |
570d7624 JB |
5042 | return Qt; |
5043 | return Qnil; | |
5044 | } | |
5045 | ||
5046 | DEFUN ("clear-visited-file-modtime", Fclear_visited_file_modtime, | |
8c1a1077 PJ |
5047 | Sclear_visited_file_modtime, 0, 0, 0, |
5048 | doc: /* Clear out records of last mod time of visited file. | |
5049 | Next attempt to save will certainly not complain of a discrepancy. */) | |
5842a27b | 5050 | (void) |
570d7624 JB |
5051 | { |
5052 | current_buffer->modtime = 0; | |
58b963f7 | 5053 | current_buffer->modtime_size = -1; |
570d7624 JB |
5054 | return Qnil; |
5055 | } | |
5056 | ||
f5d5eccf | 5057 | DEFUN ("visited-file-modtime", Fvisited_file_modtime, |
8c1a1077 PJ |
5058 | Svisited_file_modtime, 0, 0, 0, |
5059 | doc: /* Return the current buffer's recorded visited file modification time. | |
e5fcddc8 | 5060 | The value is a list of the form (HIGH LOW), like the time values |
6b61353c KH |
5061 | that `file-attributes' returns. If the current buffer has no recorded |
5062 | file modification time, this function returns 0. | |
5063 | See Info node `(elisp)Modification Time' for more details. */) | |
5842a27b | 5064 | (void) |
f5d5eccf | 5065 | { |
73ff9d42 RS |
5066 | if (! current_buffer->modtime) |
5067 | return make_number (0); | |
5068 | return make_time ((time_t) current_buffer->modtime); | |
f5d5eccf RS |
5069 | } |
5070 | ||
570d7624 | 5071 | DEFUN ("set-visited-file-modtime", Fset_visited_file_modtime, |
8c1a1077 PJ |
5072 | Sset_visited_file_modtime, 0, 1, 0, |
5073 | doc: /* Update buffer's recorded modification time from the visited file's time. | |
5074 | Useful if the buffer was not read from the file normally | |
5075 | or if the file itself has been changed for some known benign reason. | |
5076 | An argument specifies the modification time value to use | |
5077 | \(instead of that of the visited file), in the form of a list | |
5078 | \(HIGH . LOW) or (HIGH LOW). */) | |
5842a27b | 5079 | (Lisp_Object time_list) |
570d7624 | 5080 | { |
f5d5eccf | 5081 | if (!NILP (time_list)) |
58b963f7 SM |
5082 | { |
5083 | current_buffer->modtime = cons_to_long (time_list); | |
5084 | current_buffer->modtime_size = -1; | |
5085 | } | |
f5d5eccf RS |
5086 | else |
5087 | { | |
5088 | register Lisp_Object filename; | |
5089 | struct stat st; | |
5090 | Lisp_Object handler; | |
570d7624 | 5091 | |
f5d5eccf | 5092 | filename = Fexpand_file_name (current_buffer->filename, Qnil); |
32f4334d | 5093 | |
f5d5eccf RS |
5094 | /* If the file name has special constructs in it, |
5095 | call the corresponding file handler. */ | |
49307295 | 5096 | handler = Ffind_file_name_handler (filename, Qset_visited_file_modtime); |
f5d5eccf | 5097 | if (!NILP (handler)) |
caf3c431 | 5098 | /* The handler can find the file name the same way we did. */ |
76c881b0 | 5099 | return call2 (handler, Qset_visited_file_modtime, Qnil); |
b1d1b865 RS |
5100 | |
5101 | filename = ENCODE_FILE (filename); | |
5102 | ||
d5db4077 | 5103 | if (stat (SDATA (filename), &st) >= 0) |
58b963f7 SM |
5104 | { |
5105 | current_buffer->modtime = st.st_mtime; | |
5106 | current_buffer->modtime_size = st.st_size; | |
5107 | } | |
f5d5eccf | 5108 | } |
570d7624 JB |
5109 | |
5110 | return Qnil; | |
5111 | } | |
5112 | \f | |
5113 | Lisp_Object | |
971de7fb | 5114 | auto_save_error (Lisp_Object error) |
570d7624 | 5115 | { |
d7f31e22 GM |
5116 | Lisp_Object args[3], msg; |
5117 | int i, nbytes; | |
5118 | struct gcpro gcpro1; | |
dfc22242 KS |
5119 | char *msgbuf; |
5120 | USE_SAFE_ALLOCA; | |
efdc16c9 | 5121 | |
ca730bf0 CY |
5122 | auto_save_error_occurred = 1; |
5123 | ||
385ed61f | 5124 | ring_bell (XFRAME (selected_frame)); |
efdc16c9 | 5125 | |
d7f31e22 GM |
5126 | args[0] = build_string ("Auto-saving %s: %s"); |
5127 | args[1] = current_buffer->name; | |
5128 | args[2] = Ferror_message_string (error); | |
5129 | msg = Fformat (3, args); | |
5130 | GCPRO1 (msg); | |
d5db4077 | 5131 | nbytes = SBYTES (msg); |
dfc22242 | 5132 | SAFE_ALLOCA (msgbuf, char *, nbytes); |
72af86bd | 5133 | memcpy (msgbuf, SDATA (msg), nbytes); |
d7f31e22 GM |
5134 | |
5135 | for (i = 0; i < 3; ++i) | |
5136 | { | |
5137 | if (i == 0) | |
dfc22242 | 5138 | message2 (msgbuf, nbytes, STRING_MULTIBYTE (msg)); |
d7f31e22 | 5139 | else |
dfc22242 | 5140 | message2_nolog (msgbuf, nbytes, STRING_MULTIBYTE (msg)); |
d7f31e22 GM |
5141 | Fsleep_for (make_number (1), Qnil); |
5142 | } | |
5143 | ||
e01f7773 | 5144 | SAFE_FREE (); |
d7f31e22 | 5145 | UNGCPRO; |
570d7624 JB |
5146 | return Qnil; |
5147 | } | |
5148 | ||
5149 | Lisp_Object | |
971de7fb | 5150 | auto_save_1 (void) |
570d7624 | 5151 | { |
570d7624 | 5152 | struct stat st; |
d4a42098 KS |
5153 | Lisp_Object modes; |
5154 | ||
5155 | auto_save_mode_bits = 0666; | |
570d7624 JB |
5156 | |
5157 | /* Get visited file's mode to become the auto save file's mode. */ | |
d4a42098 KS |
5158 | if (! NILP (current_buffer->filename)) |
5159 | { | |
5160 | if (stat (SDATA (current_buffer->filename), &st) >= 0) | |
5161 | /* But make sure we can overwrite it later! */ | |
5162 | auto_save_mode_bits = st.st_mode | 0600; | |
5163 | else if ((modes = Ffile_modes (current_buffer->filename), | |
5164 | INTEGERP (modes))) | |
5165 | /* Remote files don't cooperate with stat. */ | |
5166 | auto_save_mode_bits = XINT (modes) | 0600; | |
5167 | } | |
570d7624 JB |
5168 | |
5169 | return | |
699b53bc CY |
5170 | Fwrite_region (Qnil, Qnil, current_buffer->auto_save_file_name, Qnil, |
5171 | NILP (Vauto_save_visited_file_name) ? Qlambda : Qt, | |
5172 | Qnil, Qnil); | |
570d7624 JB |
5173 | } |
5174 | ||
e54d3b5d | 5175 | static Lisp_Object |
971de7fb | 5176 | do_auto_save_unwind (Lisp_Object arg) /* used as unwind-protect function */ |
410ed5c3 | 5177 | |
e54d3b5d | 5178 | { |
fff7e982 | 5179 | FILE *stream = (FILE *) XSAVE_VALUE (arg)->pointer; |
3be3c08e | 5180 | auto_saving = 0; |
fff7e982 | 5181 | if (stream != NULL) |
aab12958 YM |
5182 | { |
5183 | BLOCK_INPUT; | |
5184 | fclose (stream); | |
5185 | UNBLOCK_INPUT; | |
5186 | } | |
e54d3b5d RS |
5187 | return Qnil; |
5188 | } | |
5189 | ||
a8c828be | 5190 | static Lisp_Object |
971de7fb | 5191 | do_auto_save_unwind_1 (Lisp_Object value) /* used as unwind-protect function */ |
410ed5c3 | 5192 | |
a8c828be RS |
5193 | { |
5194 | minibuffer_auto_raise = XINT (value); | |
5195 | return Qnil; | |
5196 | } | |
5197 | ||
5794dd61 | 5198 | static Lisp_Object |
971de7fb | 5199 | do_auto_save_make_dir (Lisp_Object dir) |
5794dd61 | 5200 | { |
26816cbf SG |
5201 | Lisp_Object mode; |
5202 | ||
5203 | call2 (Qmake_directory, dir, Qt); | |
5204 | XSETFASTINT (mode, 0700); | |
5205 | return Fset_file_modes (dir, mode); | |
5794dd61 RS |
5206 | } |
5207 | ||
5208 | static Lisp_Object | |
971de7fb | 5209 | do_auto_save_eh (Lisp_Object ignore) |
5794dd61 RS |
5210 | { |
5211 | return Qnil; | |
5212 | } | |
5213 | ||
570d7624 | 5214 | DEFUN ("do-auto-save", Fdo_auto_save, Sdo_auto_save, 0, 2, "", |
8c1a1077 PJ |
5215 | doc: /* Auto-save all buffers that need it. |
5216 | This is all buffers that have auto-saving enabled | |
5217 | and are changed since last auto-saved. | |
5218 | Auto-saving writes the buffer into a file | |
5219 | so that your editing is not lost if the system crashes. | |
5220 | This file is not the file you visited; that changes only when you save. | |
5221 | Normally we run the normal hook `auto-save-hook' before saving. | |
5222 | ||
5223 | A non-nil NO-MESSAGE argument means do not print any message if successful. | |
5224 | A non-nil CURRENT-ONLY argument means save only current buffer. */) | |
5842a27b | 5225 | (Lisp_Object no_message, Lisp_Object current_only) |
570d7624 JB |
5226 | { |
5227 | struct buffer *old = current_buffer, *b; | |
5228 | Lisp_Object tail, buf; | |
5229 | int auto_saved = 0; | |
f14b1c68 | 5230 | int do_handled_files; |
ff4c9993 | 5231 | Lisp_Object oquit; |
fff7e982 | 5232 | FILE *stream = NULL; |
aed13378 | 5233 | int count = SPECPDL_INDEX (); |
a8c828be | 5234 | int orig_minibuffer_auto_raise = minibuffer_auto_raise; |
5794dd61 | 5235 | int old_message_p = 0; |
d57563b6 | 5236 | struct gcpro gcpro1, gcpro2; |
38da540d RS |
5237 | |
5238 | if (max_specpdl_size < specpdl_size + 40) | |
5239 | max_specpdl_size = specpdl_size + 40; | |
5240 | ||
5241 | if (minibuf_level) | |
5242 | no_message = Qt; | |
5243 | ||
5794dd61 RS |
5244 | if (NILP (no_message)) |
5245 | { | |
5246 | old_message_p = push_message (); | |
5247 | record_unwind_protect (pop_message_unwind, Qnil); | |
5248 | } | |
efdc16c9 | 5249 | |
ff4c9993 RS |
5250 | /* Ordinarily don't quit within this function, |
5251 | but don't make it impossible to quit (in case we get hung in I/O). */ | |
5252 | oquit = Vquit_flag; | |
5253 | Vquit_flag = Qnil; | |
570d7624 JB |
5254 | |
5255 | /* No GCPRO needed, because (when it matters) all Lisp_Object variables | |
5256 | point to non-strings reached from Vbuffer_alist. */ | |
5257 | ||
265a9e55 | 5258 | if (!NILP (Vrun_hooks)) |
570d7624 JB |
5259 | call1 (Vrun_hooks, intern ("auto-save-hook")); |
5260 | ||
e54d3b5d RS |
5261 | if (STRINGP (Vauto_save_list_file_name)) |
5262 | { | |
0894672f | 5263 | Lisp_Object listfile; |
efdc16c9 | 5264 | |
258fd2cb | 5265 | listfile = Fexpand_file_name (Vauto_save_list_file_name, Qnil); |
0894672f GM |
5266 | |
5267 | /* Don't try to create the directory when shutting down Emacs, | |
5268 | because creating the directory might signal an error, and | |
5269 | that would leave Emacs in a strange state. */ | |
5270 | if (!NILP (Vrun_hooks)) | |
5271 | { | |
5272 | Lisp_Object dir; | |
d57563b6 RS |
5273 | dir = Qnil; |
5274 | GCPRO2 (dir, listfile); | |
0894672f GM |
5275 | dir = Ffile_name_directory (listfile); |
5276 | if (NILP (Ffile_directory_p (dir))) | |
5794dd61 RS |
5277 | internal_condition_case_1 (do_auto_save_make_dir, |
5278 | dir, Fcons (Fcons (Qfile_error, Qnil), Qnil), | |
5279 | do_auto_save_eh); | |
d57563b6 | 5280 | UNGCPRO; |
0894672f | 5281 | } |
efdc16c9 | 5282 | |
d5db4077 | 5283 | stream = fopen (SDATA (listfile), "w"); |
1b335d29 | 5284 | } |
199607e4 | 5285 | |
fff7e982 KS |
5286 | record_unwind_protect (do_auto_save_unwind, |
5287 | make_save_value (stream, 0)); | |
a8c828be RS |
5288 | record_unwind_protect (do_auto_save_unwind_1, |
5289 | make_number (minibuffer_auto_raise)); | |
5290 | minibuffer_auto_raise = 0; | |
3be3c08e | 5291 | auto_saving = 1; |
ca730bf0 | 5292 | auto_save_error_occurred = 0; |
3be3c08e | 5293 | |
6b61353c KH |
5294 | /* On first pass, save all files that don't have handlers. |
5295 | On second pass, save all files that do have handlers. | |
5296 | ||
5297 | If Emacs is crashing, the handlers may tweak what is causing | |
5298 | Emacs to crash in the first place, and it would be a shame if | |
5299 | Emacs failed to autosave perfectly ordinary files because it | |
5300 | couldn't handle some ange-ftp'd file. */ | |
5301 | ||
f14b1c68 | 5302 | for (do_handled_files = 0; do_handled_files < 2; do_handled_files++) |
8e50cc2d | 5303 | for (tail = Vbuffer_alist; CONSP (tail); tail = XCDR (tail)) |
f14b1c68 | 5304 | { |
03699b14 | 5305 | buf = XCDR (XCAR (tail)); |
f14b1c68 | 5306 | b = XBUFFER (buf); |
199607e4 | 5307 | |
e54d3b5d | 5308 | /* Record all the buffers that have auto save mode |
258fd2cb RS |
5309 | in the special file that lists them. For each of these buffers, |
5310 | Record visited name (if any) and auto save name. */ | |
93c30b5f | 5311 | if (STRINGP (b->auto_save_file_name) |
1b335d29 | 5312 | && stream != NULL && do_handled_files == 0) |
e54d3b5d | 5313 | { |
aab12958 | 5314 | BLOCK_INPUT; |
258fd2cb RS |
5315 | if (!NILP (b->filename)) |
5316 | { | |
d5db4077 KR |
5317 | fwrite (SDATA (b->filename), 1, |
5318 | SBYTES (b->filename), stream); | |
258fd2cb | 5319 | } |
1b335d29 | 5320 | putc ('\n', stream); |
d5db4077 KR |
5321 | fwrite (SDATA (b->auto_save_file_name), 1, |
5322 | SBYTES (b->auto_save_file_name), stream); | |
1b335d29 | 5323 | putc ('\n', stream); |
aab12958 | 5324 | UNBLOCK_INPUT; |
e54d3b5d | 5325 | } |
17857782 | 5326 | |
f14b1c68 JB |
5327 | if (!NILP (current_only) |
5328 | && b != current_buffer) | |
5329 | continue; | |
e54d3b5d | 5330 | |
95385625 RS |
5331 | /* Don't auto-save indirect buffers. |
5332 | The base buffer takes care of it. */ | |
5333 | if (b->base_buffer) | |
5334 | continue; | |
5335 | ||
f14b1c68 JB |
5336 | /* Check for auto save enabled |
5337 | and file changed since last auto save | |
5338 | and file changed since last real save. */ | |
93c30b5f | 5339 | if (STRINGP (b->auto_save_file_name) |
95385625 | 5340 | && BUF_SAVE_MODIFF (b) < BUF_MODIFF (b) |
0b5397c2 | 5341 | && BUF_AUTOSAVE_MODIFF (b) < BUF_MODIFF (b) |
82c2d839 | 5342 | /* -1 means we've turned off autosaving for a while--see below. */ |
090101cf | 5343 | && XINT (b->save_length) >= 0 |
f14b1c68 | 5344 | && (do_handled_files |
49307295 KH |
5345 | || NILP (Ffind_file_name_handler (b->auto_save_file_name, |
5346 | Qwrite_region)))) | |
f14b1c68 | 5347 | { |
b60247d9 RS |
5348 | EMACS_TIME before_time, after_time; |
5349 | ||
5350 | EMACS_GET_TIME (before_time); | |
5351 | ||
5352 | /* If we had a failure, don't try again for 20 minutes. */ | |
5353 | if (b->auto_save_failure_time >= 0 | |
5354 | && EMACS_SECS (before_time) - b->auto_save_failure_time < 1200) | |
5355 | continue; | |
5356 | ||
090101cf CY |
5357 | set_buffer_internal (b); |
5358 | if (NILP (Vauto_save_include_big_deletions) | |
4be941e3 RS |
5359 | && (XFASTINT (b->save_length) * 10 |
5360 | > (BUF_Z (b) - BUF_BEG (b)) * 13) | |
f14b1c68 JB |
5361 | /* A short file is likely to change a large fraction; |
5362 | spare the user annoying messages. */ | |
5363 | && XFASTINT (b->save_length) > 5000 | |
5364 | /* These messages are frequent and annoying for `*mail*'. */ | |
5365 | && !EQ (b->filename, Qnil) | |
5366 | && NILP (no_message)) | |
5367 | { | |
5368 | /* It has shrunk too much; turn off auto-saving here. */ | |
a8c828be | 5369 | minibuffer_auto_raise = orig_minibuffer_auto_raise; |
fd91d0d4 | 5370 | message_with_string ("Buffer %s has shrunk a lot; auto save disabled in that buffer until next real save", |
60d67b83 | 5371 | b->name, 1); |
a8c828be | 5372 | minibuffer_auto_raise = 0; |
82c2d839 RS |
5373 | /* Turn off auto-saving until there's a real save, |
5374 | and prevent any more warnings. */ | |
46283abe | 5375 | XSETINT (b->save_length, -1); |
f14b1c68 JB |
5376 | Fsleep_for (make_number (1), Qnil); |
5377 | continue; | |
5378 | } | |
f14b1c68 JB |
5379 | if (!auto_saved && NILP (no_message)) |
5380 | message1 ("Auto-saving..."); | |
5381 | internal_condition_case (auto_save_1, Qt, auto_save_error); | |
5382 | auto_saved++; | |
0b5397c2 | 5383 | BUF_AUTOSAVE_MODIFF (b) = BUF_MODIFF (b); |
090101cf | 5384 | XSETFASTINT (current_buffer->save_length, Z - BEG); |
f14b1c68 | 5385 | set_buffer_internal (old); |
b60247d9 RS |
5386 | |
5387 | EMACS_GET_TIME (after_time); | |
5388 | ||
5389 | /* If auto-save took more than 60 seconds, | |
5390 | assume it was an NFS failure that got a timeout. */ | |
5391 | if (EMACS_SECS (after_time) - EMACS_SECS (before_time) > 60) | |
5392 | b->auto_save_failure_time = EMACS_SECS (after_time); | |
f14b1c68 JB |
5393 | } |
5394 | } | |
570d7624 | 5395 | |
b67f2ca5 RS |
5396 | /* Prevent another auto save till enough input events come in. */ |
5397 | record_auto_save (); | |
570d7624 | 5398 | |
17857782 | 5399 | if (auto_saved && NILP (no_message)) |
f05b275b | 5400 | { |
5794dd61 | 5401 | if (old_message_p) |
31f3d831 | 5402 | { |
5794dd61 RS |
5403 | /* If we are going to restore an old message, |
5404 | give time to read ours. */ | |
83f8d903 | 5405 | sit_for (make_number (1), 0, 0); |
c71106e5 | 5406 | restore_message (); |
31f3d831 | 5407 | } |
ca730bf0 | 5408 | else if (!auto_save_error_occurred) |
31e31a15 CY |
5409 | /* Don't overwrite the error message if an error occurred. |
5410 | If we displayed a message and then restored a state | |
5794dd61 | 5411 | with no message, leave a "done" message on the screen. */ |
f05b275b KH |
5412 | message1 ("Auto-saving...done"); |
5413 | } | |
570d7624 | 5414 | |
ff4c9993 RS |
5415 | Vquit_flag = oquit; |
5416 | ||
5794dd61 | 5417 | /* This restores the message-stack status. */ |
e54d3b5d | 5418 | unbind_to (count, Qnil); |
570d7624 JB |
5419 | return Qnil; |
5420 | } | |
5421 | ||
5422 | DEFUN ("set-buffer-auto-saved", Fset_buffer_auto_saved, | |
8c1a1077 PJ |
5423 | Sset_buffer_auto_saved, 0, 0, 0, |
5424 | doc: /* Mark current buffer as auto-saved with its current text. | |
5425 | No auto-save file will be written until the buffer changes again. */) | |
5842a27b | 5426 | (void) |
570d7624 | 5427 | { |
0b5397c2 SM |
5428 | /* FIXME: This should not be called in indirect buffers, since |
5429 | they're not autosaved. */ | |
5430 | BUF_AUTOSAVE_MODIFF (current_buffer) = MODIFF; | |
090101cf | 5431 | XSETFASTINT (current_buffer->save_length, Z - BEG); |
b60247d9 RS |
5432 | current_buffer->auto_save_failure_time = -1; |
5433 | return Qnil; | |
5434 | } | |
5435 | ||
5436 | DEFUN ("clear-buffer-auto-save-failure", Fclear_buffer_auto_save_failure, | |
8c1a1077 PJ |
5437 | Sclear_buffer_auto_save_failure, 0, 0, 0, |
5438 | doc: /* Clear any record of a recent auto-save failure in the current buffer. */) | |
5842a27b | 5439 | (void) |
b60247d9 RS |
5440 | { |
5441 | current_buffer->auto_save_failure_time = -1; | |
570d7624 JB |
5442 | return Qnil; |
5443 | } | |
5444 | ||
5445 | DEFUN ("recent-auto-save-p", Frecent_auto_save_p, Srecent_auto_save_p, | |
8c1a1077 | 5446 | 0, 0, 0, |
68780e2a RS |
5447 | doc: /* Return t if current buffer has been auto-saved recently. |
5448 | More precisely, if it has been auto-saved since last read from or saved | |
5449 | in the visited file. If the buffer has no visited file, | |
5450 | then any auto-save counts as "recent". */) | |
5842a27b | 5451 | (void) |
570d7624 | 5452 | { |
0b5397c2 SM |
5453 | /* FIXME: maybe we should return nil for indirect buffers since |
5454 | they're never autosaved. */ | |
5455 | return (SAVE_MODIFF < BUF_AUTOSAVE_MODIFF (current_buffer) ? Qt : Qnil); | |
570d7624 JB |
5456 | } |
5457 | \f | |
5458 | /* Reading and completing file names */ | |
6e710ae5 | 5459 | |
88208bb8 JD |
5460 | DEFUN ("next-read-file-uses-dialog-p", Fnext_read_file_uses_dialog_p, |
5461 | Snext_read_file_uses_dialog_p, 0, 0, 0, | |
5462 | doc: /* Return t if a call to `read-file-name' will use a dialog. | |
5463 | The return value is only relevant for a call to `read-file-name' that happens | |
1a0de25c | 5464 | before any other event (mouse or keypress) is handled. */) |
5842a27b | 5465 | (void) |
88208bb8 | 5466 | { |
9e2a2647 | 5467 | #if defined (USE_MOTIF) || defined (HAVE_NTGUI) || defined (USE_GTK) |
88208bb8 JD |
5468 | if ((NILP (last_nonmenu_event) || CONSP (last_nonmenu_event)) |
5469 | && use_dialog_box | |
5470 | && use_file_dialog | |
5471 | && have_menus_p ()) | |
5472 | return Qt; | |
5473 | #endif | |
5474 | return Qnil; | |
5475 | } | |
d4a42098 | 5476 | |
dbd50d4b | 5477 | Lisp_Object |
971de7fb | 5478 | Fread_file_name (Lisp_Object prompt, Lisp_Object dir, Lisp_Object default_filename, Lisp_Object mustmatch, Lisp_Object initial, Lisp_Object predicate) |
570d7624 | 5479 | { |
570d7624 | 5480 | struct gcpro gcpro1, gcpro2; |
dbd50d4b | 5481 | Lisp_Object args[7]; |
a79485af | 5482 | |
71e1f69d | 5483 | GCPRO1 (default_filename); |
dbd50d4b SM |
5484 | args[0] = intern ("read-file-name"); |
5485 | args[1] = prompt; | |
5486 | args[2] = dir; | |
5487 | args[3] = default_filename; | |
5488 | args[4] = mustmatch; | |
5489 | args[5] = initial; | |
5490 | args[6] = predicate; | |
5491 | RETURN_UNGCPRO (Ffuncall (7, args)); | |
570d7624 | 5492 | } |
9c856db9 | 5493 | |
570d7624 | 5494 | \f |
dfcf069d | 5495 | void |
971de7fb | 5496 | syms_of_fileio (void) |
570d7624 | 5497 | { |
d67b4f80 DN |
5498 | Qoperations = intern_c_string ("operations"); |
5499 | Qexpand_file_name = intern_c_string ("expand-file-name"); | |
5500 | Qsubstitute_in_file_name = intern_c_string ("substitute-in-file-name"); | |
5501 | Qdirectory_file_name = intern_c_string ("directory-file-name"); | |
5502 | Qfile_name_directory = intern_c_string ("file-name-directory"); | |
5503 | Qfile_name_nondirectory = intern_c_string ("file-name-nondirectory"); | |
5504 | Qunhandled_file_name_directory = intern_c_string ("unhandled-file-name-directory"); | |
5505 | Qfile_name_as_directory = intern_c_string ("file-name-as-directory"); | |
5506 | Qcopy_file = intern_c_string ("copy-file"); | |
5507 | Qmake_directory_internal = intern_c_string ("make-directory-internal"); | |
5508 | Qmake_directory = intern_c_string ("make-directory"); | |
5509 | Qdelete_directory_internal = intern_c_string ("delete-directory-internal"); | |
5510 | Qdelete_file = intern_c_string ("delete-file"); | |
5511 | Qrename_file = intern_c_string ("rename-file"); | |
5512 | Qadd_name_to_file = intern_c_string ("add-name-to-file"); | |
5513 | Qmake_symbolic_link = intern_c_string ("make-symbolic-link"); | |
5514 | Qfile_exists_p = intern_c_string ("file-exists-p"); | |
5515 | Qfile_executable_p = intern_c_string ("file-executable-p"); | |
5516 | Qfile_readable_p = intern_c_string ("file-readable-p"); | |
5517 | Qfile_writable_p = intern_c_string ("file-writable-p"); | |
5518 | Qfile_symlink_p = intern_c_string ("file-symlink-p"); | |
5519 | Qaccess_file = intern_c_string ("access-file"); | |
5520 | Qfile_directory_p = intern_c_string ("file-directory-p"); | |
5521 | Qfile_regular_p = intern_c_string ("file-regular-p"); | |
5522 | Qfile_accessible_directory_p = intern_c_string ("file-accessible-directory-p"); | |
5523 | Qfile_modes = intern_c_string ("file-modes"); | |
5524 | Qset_file_modes = intern_c_string ("set-file-modes"); | |
5525 | Qset_file_times = intern_c_string ("set-file-times"); | |
574c05e2 KK |
5526 | Qfile_selinux_context = intern_c_string("file-selinux-context"); |
5527 | Qset_file_selinux_context = intern_c_string("set-file-selinux-context"); | |
d67b4f80 DN |
5528 | Qfile_newer_than_file_p = intern_c_string ("file-newer-than-file-p"); |
5529 | Qinsert_file_contents = intern_c_string ("insert-file-contents"); | |
5530 | Qwrite_region = intern_c_string ("write-region"); | |
5531 | Qverify_visited_file_modtime = intern_c_string ("verify-visited-file-modtime"); | |
5532 | Qset_visited_file_modtime = intern_c_string ("set-visited-file-modtime"); | |
5533 | Qauto_save_coding = intern_c_string ("auto-save-coding"); | |
32f4334d | 5534 | |
f6c9b683 | 5535 | staticpro (&Qoperations); |
642ef245 | 5536 | staticpro (&Qexpand_file_name); |
273e0829 | 5537 | staticpro (&Qsubstitute_in_file_name); |
642ef245 JB |
5538 | staticpro (&Qdirectory_file_name); |
5539 | staticpro (&Qfile_name_directory); | |
5540 | staticpro (&Qfile_name_nondirectory); | |
5541 | staticpro (&Qunhandled_file_name_directory); | |
5542 | staticpro (&Qfile_name_as_directory); | |
15c65264 | 5543 | staticpro (&Qcopy_file); |
c34b559d | 5544 | staticpro (&Qmake_directory_internal); |
b272d624 | 5545 | staticpro (&Qmake_directory); |
9d8f3bd9 | 5546 | staticpro (&Qdelete_directory_internal); |
15c65264 RS |
5547 | staticpro (&Qdelete_file); |
5548 | staticpro (&Qrename_file); | |
5549 | staticpro (&Qadd_name_to_file); | |
5550 | staticpro (&Qmake_symbolic_link); | |
5551 | staticpro (&Qfile_exists_p); | |
5552 | staticpro (&Qfile_executable_p); | |
5553 | staticpro (&Qfile_readable_p); | |
15c65264 | 5554 | staticpro (&Qfile_writable_p); |
1f8653eb RS |
5555 | staticpro (&Qaccess_file); |
5556 | staticpro (&Qfile_symlink_p); | |
15c65264 | 5557 | staticpro (&Qfile_directory_p); |
adedc71d | 5558 | staticpro (&Qfile_regular_p); |
15c65264 RS |
5559 | staticpro (&Qfile_accessible_directory_p); |
5560 | staticpro (&Qfile_modes); | |
5561 | staticpro (&Qset_file_modes); | |
819da85b | 5562 | staticpro (&Qset_file_times); |
574c05e2 KK |
5563 | staticpro (&Qfile_selinux_context); |
5564 | staticpro (&Qset_file_selinux_context); | |
15c65264 RS |
5565 | staticpro (&Qfile_newer_than_file_p); |
5566 | staticpro (&Qinsert_file_contents); | |
5567 | staticpro (&Qwrite_region); | |
5568 | staticpro (&Qverify_visited_file_modtime); | |
0a61794b | 5569 | staticpro (&Qset_visited_file_modtime); |
356a6224 | 5570 | staticpro (&Qauto_save_coding); |
642ef245 | 5571 | |
d67b4f80 | 5572 | Qfile_name_history = intern_c_string ("file-name-history"); |
642ef245 | 5573 | Fset (Qfile_name_history, Qnil); |
15c65264 RS |
5574 | staticpro (&Qfile_name_history); |
5575 | ||
d67b4f80 | 5576 | Qfile_error = intern_c_string ("file-error"); |
570d7624 | 5577 | staticpro (&Qfile_error); |
d67b4f80 | 5578 | Qfile_already_exists = intern_c_string ("file-already-exists"); |
570d7624 | 5579 | staticpro (&Qfile_already_exists); |
d67b4f80 | 5580 | Qfile_date_error = intern_c_string ("file-date-error"); |
c0b7b21c | 5581 | staticpro (&Qfile_date_error); |
d67b4f80 | 5582 | Qexcl = intern_c_string ("excl"); |
505ab9bc | 5583 | staticpro (&Qexcl); |
570d7624 | 5584 | |
5e570b75 | 5585 | #ifdef DOS_NT |
d67b4f80 | 5586 | Qfind_buffer_file_type = intern_c_string ("find-buffer-file-type"); |
4c3c22f3 | 5587 | staticpro (&Qfind_buffer_file_type); |
5e570b75 | 5588 | #endif /* DOS_NT */ |
4c3c22f3 | 5589 | |
29208e82 | 5590 | DEFVAR_LISP ("file-name-coding-system", Vfile_name_coding_system, |
8c1a1077 | 5591 | doc: /* *Coding system for encoding file names. |
346ebf53 | 5592 | If it is nil, `default-file-name-coding-system' (which see) is used. */); |
b1d1b865 RS |
5593 | Vfile_name_coding_system = Qnil; |
5594 | ||
cd913586 | 5595 | DEFVAR_LISP ("default-file-name-coding-system", |
29208e82 | 5596 | Vdefault_file_name_coding_system, |
8c1a1077 | 5597 | doc: /* Default coding system for encoding file names. |
346ebf53 | 5598 | This variable is used only when `file-name-coding-system' is nil. |
8c1a1077 | 5599 | |
346ebf53 | 5600 | This variable is set/changed by the command `set-language-environment'. |
8c1a1077 | 5601 | User should not set this variable manually, |
346ebf53 | 5602 | instead use `file-name-coding-system' to get a constant encoding |
8c1a1077 | 5603 | of file names regardless of the current language environment. */); |
cd913586 KH |
5604 | Vdefault_file_name_coding_system = Qnil; |
5605 | ||
d67b4f80 | 5606 | Qformat_decode = intern_c_string ("format-decode"); |
0d420e88 | 5607 | staticpro (&Qformat_decode); |
d67b4f80 | 5608 | Qformat_annotate_function = intern_c_string ("format-annotate-function"); |
0d420e88 | 5609 | staticpro (&Qformat_annotate_function); |
d67b4f80 | 5610 | Qafter_insert_file_set_coding = intern_c_string ("after-insert-file-set-coding"); |
2080470e | 5611 | staticpro (&Qafter_insert_file_set_coding); |
efdc16c9 | 5612 | |
d67b4f80 | 5613 | Qcar_less_than_car = intern_c_string ("car-less-than-car"); |
d6a3cc15 RS |
5614 | staticpro (&Qcar_less_than_car); |
5615 | ||
570d7624 | 5616 | Fput (Qfile_error, Qerror_conditions, |
d67b4f80 | 5617 | Fpurecopy (list2 (Qfile_error, Qerror))); |
570d7624 | 5618 | Fput (Qfile_error, Qerror_message, |
d67b4f80 | 5619 | make_pure_c_string ("File error")); |
570d7624 JB |
5620 | |
5621 | Fput (Qfile_already_exists, Qerror_conditions, | |
d67b4f80 | 5622 | Fpurecopy (list3 (Qfile_already_exists, Qfile_error, Qerror))); |
570d7624 | 5623 | Fput (Qfile_already_exists, Qerror_message, |
d67b4f80 | 5624 | make_pure_c_string ("File already exists")); |
570d7624 | 5625 | |
c0b7b21c | 5626 | Fput (Qfile_date_error, Qerror_conditions, |
d67b4f80 | 5627 | Fpurecopy (list3 (Qfile_date_error, Qfile_error, Qerror))); |
c0b7b21c | 5628 | Fput (Qfile_date_error, Qerror_message, |
d67b4f80 | 5629 | make_pure_c_string ("Cannot set file date")); |
c0b7b21c | 5630 | |
29208e82 | 5631 | DEFVAR_LISP ("file-name-handler-alist", Vfile_name_handler_alist, |
8c1a1077 PJ |
5632 | doc: /* *Alist of elements (REGEXP . HANDLER) for file names handled specially. |
5633 | If a file name matches REGEXP, then all I/O on that file is done by calling | |
5634 | HANDLER. | |
5635 | ||
5636 | The first argument given to HANDLER is the name of the I/O primitive | |
5637 | to be handled; the remaining arguments are the arguments that were | |
5638 | passed to that primitive. For example, if you do | |
5639 | (file-exists-p FILENAME) | |
5640 | and FILENAME is handled by HANDLER, then HANDLER is called like this: | |
5641 | (funcall HANDLER 'file-exists-p FILENAME) | |
5642 | The function `find-file-name-handler' checks this list for a handler | |
5643 | for its argument. */); | |
09121adc RS |
5644 | Vfile_name_handler_alist = Qnil; |
5645 | ||
0414b394 | 5646 | DEFVAR_LISP ("set-auto-coding-function", |
29208e82 | 5647 | Vset_auto_coding_function, |
8c1a1077 PJ |
5648 | doc: /* If non-nil, a function to call to decide a coding system of file. |
5649 | Two arguments are passed to this function: the file name | |
5650 | and the length of a file contents following the point. | |
5651 | This function should return a coding system to decode the file contents. | |
5652 | It should check the file name against `auto-coding-alist'. | |
5653 | If no coding system is decided, it should check a coding system | |
5654 | specified in the heading lines with the format: | |
5655 | -*- ... coding: CODING-SYSTEM; ... -*- | |
5656 | or local variable spec of the tailing lines with `coding:' tag. */); | |
0414b394 | 5657 | Vset_auto_coding_function = Qnil; |
c9e82392 | 5658 | |
29208e82 | 5659 | DEFVAR_LISP ("after-insert-file-functions", Vafter_insert_file_functions, |
8c1a1077 | 5660 | doc: /* A list of functions to be called at the end of `insert-file-contents'. |
0cf9f5b5 RS |
5661 | Each is passed one argument, the number of characters inserted, |
5662 | with point at the start of the inserted text. Each function | |
5663 | should leave point the same, and return the new character count. | |
cf6d2357 RS |
5664 | If `insert-file-contents' is intercepted by a handler from |
5665 | `file-name-handler-alist', that handler is responsible for calling the | |
5666 | functions in `after-insert-file-functions' if appropriate. */); | |
d6a3cc15 RS |
5667 | Vafter_insert_file_functions = Qnil; |
5668 | ||
29208e82 | 5669 | DEFVAR_LISP ("write-region-annotate-functions", Vwrite_region_annotate_functions, |
8c1a1077 PJ |
5670 | doc: /* A list of functions to be called at the start of `write-region'. |
5671 | Each is passed two arguments, START and END as for `write-region'. | |
5672 | These are usually two numbers but not always; see the documentation | |
5673 | for `write-region'. The function should return a list of pairs | |
5674 | of the form (POSITION . STRING), consisting of strings to be effectively | |
5675 | inserted at the specified positions of the file being written (1 means to | |
5676 | insert before the first byte written). The POSITIONs must be sorted into | |
67fbc0cb CY |
5677 | increasing order. |
5678 | ||
5679 | If there are several annotation functions, the lists returned by these | |
5680 | functions are merged destructively. As each annotation function runs, | |
5681 | the variable `write-region-annotations-so-far' contains a list of all | |
5682 | annotations returned by previous annotation functions. | |
5683 | ||
5684 | An annotation function can return with a different buffer current. | |
5685 | Doing so removes the annotations returned by previous functions, and | |
5686 | resets START and END to `point-min' and `point-max' of the new buffer. | |
5687 | ||
5688 | After `write-region' completes, Emacs calls the function stored in | |
5689 | `write-region-post-annotation-function', once for each buffer that was | |
5690 | current when building the annotations (i.e., at least once), with that | |
5691 | buffer current. */); | |
d6a3cc15 | 5692 | Vwrite_region_annotate_functions = Qnil; |
bd235610 SM |
5693 | staticpro (&Qwrite_region_annotate_functions); |
5694 | Qwrite_region_annotate_functions | |
d67b4f80 | 5695 | = intern_c_string ("write-region-annotate-functions"); |
d6a3cc15 | 5696 | |
67fbc0cb | 5697 | DEFVAR_LISP ("write-region-post-annotation-function", |
29208e82 | 5698 | Vwrite_region_post_annotation_function, |
67fbc0cb CY |
5699 | doc: /* Function to call after `write-region' completes. |
5700 | The function is called with no arguments. If one or more of the | |
5701 | annotation functions in `write-region-annotate-functions' changed the | |
5702 | current buffer, the function stored in this variable is called for | |
5703 | each of those additional buffers as well, in addition to the original | |
5704 | buffer. The relevant buffer is current during each function call. */); | |
5705 | Vwrite_region_post_annotation_function = Qnil; | |
5706 | staticpro (&Vwrite_region_annotation_buffers); | |
5707 | ||
6fc6f94b | 5708 | DEFVAR_LISP ("write-region-annotations-so-far", |
29208e82 | 5709 | Vwrite_region_annotations_so_far, |
8c1a1077 PJ |
5710 | doc: /* When an annotation function is called, this holds the previous annotations. |
5711 | These are the annotations made by other annotation functions | |
5712 | that were already called. See also `write-region-annotate-functions'. */); | |
6fc6f94b RS |
5713 | Vwrite_region_annotations_so_far = Qnil; |
5714 | ||
29208e82 | 5715 | DEFVAR_LISP ("inhibit-file-name-handlers", Vinhibit_file_name_handlers, |
8c1a1077 PJ |
5716 | doc: /* A list of file name handlers that temporarily should not be used. |
5717 | This applies only to the operation `inhibit-file-name-operation'. */); | |
82c2d839 RS |
5718 | Vinhibit_file_name_handlers = Qnil; |
5719 | ||
29208e82 | 5720 | DEFVAR_LISP ("inhibit-file-name-operation", Vinhibit_file_name_operation, |
8c1a1077 | 5721 | doc: /* The operation for which `inhibit-file-name-handlers' is applicable. */); |
a65970a0 RS |
5722 | Vinhibit_file_name_operation = Qnil; |
5723 | ||
29208e82 | 5724 | DEFVAR_LISP ("auto-save-list-file-name", Vauto_save_list_file_name, |
8c1a1077 PJ |
5725 | doc: /* File name in which we write a list of all auto save file names. |
5726 | This variable is initialized automatically from `auto-save-list-file-prefix' | |
5727 | shortly after Emacs reads your `.emacs' file, if you have not yet given it | |
5728 | a non-nil value. */); | |
e54d3b5d RS |
5729 | Vauto_save_list_file_name = Qnil; |
5730 | ||
29208e82 | 5731 | DEFVAR_LISP ("auto-save-visited-file-name", Vauto_save_visited_file_name, |
699b53bc CY |
5732 | doc: /* Non-nil says auto-save a buffer in the file it is visiting, when practical. |
5733 | Normally auto-save files are written under other names. */); | |
5734 | Vauto_save_visited_file_name = Qnil; | |
5735 | ||
29208e82 | 5736 | DEFVAR_LISP ("auto-save-include-big-deletions", Vauto_save_include_big_deletions, |
090101cf CY |
5737 | doc: /* If non-nil, auto-save even if a large part of the text is deleted. |
5738 | If nil, deleting a substantial portion of the text disables auto-save | |
5739 | in the buffer; this is the default behavior, because the auto-save | |
5740 | file is usually more useful if it contains the deleted text. */); | |
5741 | Vauto_save_include_big_deletions = Qnil; | |
5742 | ||
ccf61795 | 5743 | #ifdef HAVE_FSYNC |
29208e82 | 5744 | DEFVAR_BOOL ("write-region-inhibit-fsync", write_region_inhibit_fsync, |
e3f509dd RF |
5745 | doc: /* *Non-nil means don't call fsync in `write-region'. |
5746 | This variable affects calls to `write-region' as well as save commands. | |
5747 | A non-nil value may result in data loss! */); | |
ccf61795 RF |
5748 | write_region_inhibit_fsync = 0; |
5749 | #endif | |
5750 | ||
29208e82 | 5751 | DEFVAR_BOOL ("delete-by-moving-to-trash", delete_by_moving_to_trash, |
6cf29fe8 | 5752 | doc: /* Specifies whether to use the system's trash can. |
f1a5d776 CY |
5753 | When non-nil, certain file deletion commands use the function |
5754 | `move-file-to-trash' instead of deleting files outright. | |
5755 | This includes interactive calls to `delete-file' and | |
5756 | `delete-directory' and the Dired deletion commands. */); | |
6cf29fe8 | 5757 | delete_by_moving_to_trash = 0; |
d67b4f80 DN |
5758 | Qdelete_by_moving_to_trash = intern_c_string ("delete-by-moving-to-trash"); |
5759 | Qmove_file_to_trash = intern_c_string ("move-file-to-trash"); | |
6cf29fe8 | 5760 | staticpro (&Qmove_file_to_trash); |
8719abec CY |
5761 | Qcopy_directory = intern_c_string ("copy-directory"); |
5762 | staticpro (&Qcopy_directory); | |
5763 | Qdelete_directory = intern_c_string ("delete-directory"); | |
5764 | staticpro (&Qdelete_directory); | |
6cf29fe8 | 5765 | |
642ef245 | 5766 | defsubr (&Sfind_file_name_handler); |
570d7624 JB |
5767 | defsubr (&Sfile_name_directory); |
5768 | defsubr (&Sfile_name_nondirectory); | |
642ef245 | 5769 | defsubr (&Sunhandled_file_name_directory); |
570d7624 JB |
5770 | defsubr (&Sfile_name_as_directory); |
5771 | defsubr (&Sdirectory_file_name); | |
5772 | defsubr (&Smake_temp_name); | |
5773 | defsubr (&Sexpand_file_name); | |
5774 | defsubr (&Ssubstitute_in_file_name); | |
5775 | defsubr (&Scopy_file); | |
9bbe01fb | 5776 | defsubr (&Smake_directory_internal); |
9d8f3bd9 | 5777 | defsubr (&Sdelete_directory_internal); |
570d7624 JB |
5778 | defsubr (&Sdelete_file); |
5779 | defsubr (&Srename_file); | |
5780 | defsubr (&Sadd_name_to_file); | |
570d7624 | 5781 | defsubr (&Smake_symbolic_link); |
570d7624 JB |
5782 | defsubr (&Sfile_name_absolute_p); |
5783 | defsubr (&Sfile_exists_p); | |
5784 | defsubr (&Sfile_executable_p); | |
5785 | defsubr (&Sfile_readable_p); | |
5786 | defsubr (&Sfile_writable_p); | |
1f8653eb | 5787 | defsubr (&Saccess_file); |
570d7624 JB |
5788 | defsubr (&Sfile_symlink_p); |
5789 | defsubr (&Sfile_directory_p); | |
b72dea2a | 5790 | defsubr (&Sfile_accessible_directory_p); |
f793dc6c | 5791 | defsubr (&Sfile_regular_p); |
570d7624 JB |
5792 | defsubr (&Sfile_modes); |
5793 | defsubr (&Sset_file_modes); | |
819da85b | 5794 | defsubr (&Sset_file_times); |
574c05e2 KK |
5795 | defsubr (&Sfile_selinux_context); |
5796 | defsubr (&Sset_file_selinux_context); | |
c24e9a53 RS |
5797 | defsubr (&Sset_default_file_modes); |
5798 | defsubr (&Sdefault_file_modes); | |
570d7624 JB |
5799 | defsubr (&Sfile_newer_than_file_p); |
5800 | defsubr (&Sinsert_file_contents); | |
5801 | defsubr (&Swrite_region); | |
d6a3cc15 | 5802 | defsubr (&Scar_less_than_car); |
570d7624 JB |
5803 | defsubr (&Sverify_visited_file_modtime); |
5804 | defsubr (&Sclear_visited_file_modtime); | |
f5d5eccf | 5805 | defsubr (&Svisited_file_modtime); |
570d7624 JB |
5806 | defsubr (&Sset_visited_file_modtime); |
5807 | defsubr (&Sdo_auto_save); | |
5808 | defsubr (&Sset_buffer_auto_saved); | |
b60247d9 | 5809 | defsubr (&Sclear_buffer_auto_save_failure); |
570d7624 JB |
5810 | defsubr (&Srecent_auto_save_p); |
5811 | ||
88208bb8 | 5812 | defsubr (&Snext_read_file_uses_dialog_p); |
85ffea93 | 5813 | |
697c17a2 | 5814 | #ifdef HAVE_SYNC |
85ffea93 | 5815 | defsubr (&Sunix_sync); |
483a2e10 | 5816 | #endif |
570d7624 | 5817 | } |