Commit | Line | Data |
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570d7624 | 1 | /* File IO for GNU Emacs. |
e9bffc61 | 2 | |
73b0cd50 | 3 | Copyright (C) 1985-1988, 1993-2011 Free Software Foundation, Inc. |
570d7624 JB |
4 | |
5 | This file is part of GNU Emacs. | |
6 | ||
9ec0b715 | 7 | GNU Emacs is free software: you can redistribute it and/or modify |
570d7624 | 8 | it under the terms of the GNU General Public License as published by |
9ec0b715 GM |
9 | the Free Software Foundation, either version 3 of the License, or |
10 | (at your option) any later version. | |
570d7624 JB |
11 | |
12 | GNU Emacs is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
9ec0b715 | 18 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
570d7624 | 19 | |
18160b98 | 20 | #include <config.h> |
77a28bbf | 21 | #include <limits.h> |
bb369dc6 | 22 | #include <fcntl.h> |
1b335d29 | 23 | #include <stdio.h> |
570d7624 JB |
24 | #include <sys/types.h> |
25 | #include <sys/stat.h> | |
d7306fe6 | 26 | #include <setjmp.h> |
29beb080 | 27 | #include <unistd.h> |
29beb080 | 28 | |
5b9c0a1d | 29 | #ifdef HAVE_PWD_H |
570d7624 | 30 | #include <pwd.h> |
bfb61299 JB |
31 | #endif |
32 | ||
570d7624 | 33 | #include <ctype.h> |
570d7624 JB |
34 | #include <errno.h> |
35 | ||
574c05e2 KK |
36 | #ifdef HAVE_LIBSELINUX |
37 | #include <selinux/selinux.h> | |
38 | #include <selinux/context.h> | |
39 | #endif | |
40 | ||
570d7624 | 41 | #include "lisp.h" |
8d4e077b | 42 | #include "intervals.h" |
570d7624 | 43 | #include "buffer.h" |
db327c7e | 44 | #include "character.h" |
6fdaa9a0 | 45 | #include "coding.h" |
570d7624 | 46 | #include "window.h" |
67c08d6c | 47 | #include "blockinput.h" |
385ed61f KL |
48 | #include "frame.h" |
49 | #include "dispextern.h" | |
570d7624 | 50 | |
5e570b75 RS |
51 | #ifdef WINDOWSNT |
52 | #define NOMINMAX 1 | |
53 | #include <windows.h> | |
5e570b75 RS |
54 | #include <fcntl.h> |
55 | #endif /* not WINDOWSNT */ | |
56 | ||
7990d02a EZ |
57 | #ifdef MSDOS |
58 | #include "msdos.h" | |
59 | #include <sys/param.h> | |
7990d02a | 60 | #include <fcntl.h> |
7990d02a | 61 | #endif |
7990d02a | 62 | |
199607e4 | 63 | #ifdef DOS_NT |
199607e4 RS |
64 | /* On Windows, drive letters must be alphabetic - on DOS, the Netware |
65 | redirector allows the six letters between 'Z' and 'a' as well. */ | |
66 | #ifdef MSDOS | |
67 | #define IS_DRIVE(x) ((x) >= 'A' && (x) <= 'z') | |
68 | #endif | |
69 | #ifdef WINDOWSNT | |
5976c3fe | 70 | #define IS_DRIVE(x) isalpha ((unsigned char) (x)) |
199607e4 | 71 | #endif |
f54b565c MB |
72 | /* Need to lower-case the drive letter, or else expanded |
73 | filenames will sometimes compare inequal, because | |
74 | `expand-file-name' doesn't always down-case the drive letter. */ | |
5976c3fe | 75 | #define DRIVE_LETTER(x) (tolower ((unsigned char) (x))) |
199607e4 RS |
76 | #endif |
77 | ||
de5bf5d3 | 78 | #include "systime.h" |
570d7624 JB |
79 | |
80 | #ifdef HPUX | |
81 | #include <netio.h> | |
47e7b9e5 | 82 | #endif |
570d7624 | 83 | |
9c856db9 | 84 | #include "commands.h" |
9c856db9 | 85 | |
c1558952 TTN |
86 | #ifndef FILE_SYSTEM_CASE |
87 | #define FILE_SYSTEM_CASE(filename) (filename) | |
88 | #endif | |
89 | ||
570d7624 | 90 | /* Nonzero during writing of auto-save files */ |
5045092b | 91 | static int auto_saving; |
570d7624 JB |
92 | |
93 | /* Set by auto_save_1 to mode of original file so Fwrite_region will create | |
94 | a new file with the same mode as the original */ | |
5045092b | 95 | static int auto_save_mode_bits; |
570d7624 | 96 | |
ca730bf0 | 97 | /* Set by auto_save_1 if an error occurred during the last auto-save. */ |
5045092b | 98 | static int auto_save_error_occurred; |
ca730bf0 | 99 | |
356a6224 KH |
100 | /* The symbol bound to coding-system-for-read when |
101 | insert-file-contents is called for recovering a file. This is not | |
102 | an actual coding system name, but just an indicator to tell | |
103 | insert-file-contents to use `emacs-mule' with a special flag for | |
104 | auto saving and recovering a file. */ | |
955cbe7b | 105 | static Lisp_Object Qauto_save_coding; |
356a6224 | 106 | |
f6c9b683 RS |
107 | /* Property name of a file name handler, |
108 | which gives a list of operations it handles.. */ | |
955cbe7b | 109 | static Lisp_Object Qoperations; |
f6c9b683 | 110 | |
0d420e88 | 111 | /* Lisp functions for translating file formats */ |
955cbe7b | 112 | static Lisp_Object Qformat_decode, Qformat_annotate_function; |
0d420e88 | 113 | |
2080470e | 114 | /* Lisp function for setting buffer-file-coding-system and the |
b6426b03 | 115 | multibyteness of the current buffer after inserting a file. */ |
955cbe7b | 116 | static Lisp_Object Qafter_insert_file_set_coding; |
b6426b03 | 117 | |
955cbe7b | 118 | static Lisp_Object Qwrite_region_annotate_functions; |
67fbc0cb CY |
119 | /* Each time an annotation function changes the buffer, the new buffer |
120 | is added here. */ | |
5045092b | 121 | static Lisp_Object Vwrite_region_annotation_buffers; |
67fbc0cb | 122 | |
ccf61795 | 123 | #ifdef HAVE_FSYNC |
ccf61795 RF |
124 | #endif |
125 | ||
955cbe7b | 126 | static Lisp_Object Qdelete_by_moving_to_trash; |
d2b66acf | 127 | |
6cf29fe8 | 128 | /* Lisp function for moving files to trash. */ |
955cbe7b | 129 | static Lisp_Object Qmove_file_to_trash; |
6cf29fe8 | 130 | |
8719abec | 131 | /* Lisp function for recursively copying directories. */ |
955cbe7b | 132 | static Lisp_Object Qcopy_directory; |
8719abec CY |
133 | |
134 | /* Lisp function for recursively deleting directories. */ | |
955cbe7b | 135 | static Lisp_Object Qdelete_directory; |
8719abec | 136 | |
c1c4693e | 137 | #ifdef WINDOWSNT |
c1c4693e RS |
138 | #endif |
139 | ||
955cbe7b PE |
140 | Lisp_Object Qfile_error; |
141 | static Lisp_Object Qfile_already_exists, Qfile_date_error; | |
142 | static Lisp_Object Qexcl; | |
15c65264 RS |
143 | Lisp_Object Qfile_name_history; |
144 | ||
955cbe7b | 145 | static Lisp_Object Qcar_less_than_car; |
d6a3cc15 | 146 | |
cd64ea1d | 147 | static Lisp_Object Fmake_symbolic_link (Lisp_Object, Lisp_Object, Lisp_Object); |
8a2cbd72 | 148 | static int a_write (int, Lisp_Object, EMACS_INT, EMACS_INT, |
f57e2426 | 149 | Lisp_Object *, struct coding_system *); |
8bd7b830 | 150 | static int e_write (int, Lisp_Object, EMACS_INT, EMACS_INT, |
8a2cbd72 | 151 | struct coding_system *); |
ce51c54c | 152 | |
ec7adf26 | 153 | \f |
5d01d666 | 154 | void |
971de7fb | 155 | report_file_error (const char *string, Lisp_Object data) |
570d7624 JB |
156 | { |
157 | Lisp_Object errstring; | |
505ab9bc | 158 | int errorno = errno; |
d7259fdb | 159 | char *str; |
570d7624 | 160 | |
ca9c0567 | 161 | synchronize_system_messages_locale (); |
d7259fdb KH |
162 | str = strerror (errorno); |
163 | errstring = code_convert_string_norecord (make_unibyte_string (str, | |
164 | strlen (str)), | |
68c45bf0 PE |
165 | Vlocale_coding_system, 0); |
166 | ||
570d7624 | 167 | while (1) |
505ab9bc RS |
168 | switch (errorno) |
169 | { | |
170 | case EEXIST: | |
24b1ddad | 171 | xsignal (Qfile_already_exists, Fcons (errstring, data)); |
505ab9bc RS |
172 | break; |
173 | default: | |
174 | /* System error messages are capitalized. Downcase the initial | |
39824137 EZ |
175 | unless it is followed by a slash. (The slash case caters to |
176 | error messages that begin with "I/O" or, in German, "E/A".) */ | |
d5443ffd KH |
177 | if (STRING_MULTIBYTE (errstring) |
178 | && ! EQ (Faref (errstring, make_number (1)), make_number ('/'))) | |
6c0969ca KH |
179 | { |
180 | int c; | |
181 | ||
51b59d79 | 182 | str = SSDATA (errstring); |
5976c3fe | 183 | c = STRING_CHAR ((unsigned char *) str); |
5da9919f | 184 | Faset (errstring, make_number (0), make_number (downcase (c))); |
6c0969ca | 185 | } |
505ab9bc | 186 | |
24b1ddad | 187 | xsignal (Qfile_error, |
505ab9bc RS |
188 | Fcons (build_string (string), Fcons (errstring, data))); |
189 | } | |
570d7624 | 190 | } |
b5148e85 | 191 | |
b27a1703 | 192 | Lisp_Object |
971de7fb | 193 | close_file_unwind (Lisp_Object fd) |
b5148e85 | 194 | { |
68c45bf0 | 195 | emacs_close (XFASTINT (fd)); |
b27a1703 | 196 | return Qnil; |
b5148e85 | 197 | } |
a1d2b64a RS |
198 | |
199 | /* Restore point, having saved it as a marker. */ | |
200 | ||
5dcde606 | 201 | Lisp_Object |
971de7fb | 202 | restore_point_unwind (Lisp_Object location) |
a1d2b64a | 203 | { |
ec7adf26 | 204 | Fgoto_char (location); |
a1d2b64a | 205 | Fset_marker (location, Qnil, Qnil); |
b27a1703 | 206 | return Qnil; |
a1d2b64a | 207 | } |
59c94f03 | 208 | |
570d7624 | 209 | \f |
955cbe7b PE |
210 | static Lisp_Object Qexpand_file_name; |
211 | static Lisp_Object Qsubstitute_in_file_name; | |
212 | static Lisp_Object Qdirectory_file_name; | |
213 | static Lisp_Object Qfile_name_directory; | |
214 | static Lisp_Object Qfile_name_nondirectory; | |
215 | static Lisp_Object Qunhandled_file_name_directory; | |
216 | static Lisp_Object Qfile_name_as_directory; | |
217 | static Lisp_Object Qcopy_file; | |
218 | static Lisp_Object Qmake_directory_internal; | |
219 | static Lisp_Object Qmake_directory; | |
220 | static Lisp_Object Qdelete_directory_internal; | |
32f4334d | 221 | Lisp_Object Qdelete_file; |
955cbe7b PE |
222 | static Lisp_Object Qrename_file; |
223 | static Lisp_Object Qadd_name_to_file; | |
224 | static Lisp_Object Qmake_symbolic_link; | |
32f4334d | 225 | Lisp_Object Qfile_exists_p; |
955cbe7b PE |
226 | static Lisp_Object Qfile_executable_p; |
227 | static Lisp_Object Qfile_readable_p; | |
228 | static Lisp_Object Qfile_writable_p; | |
229 | static Lisp_Object Qfile_symlink_p; | |
230 | static Lisp_Object Qaccess_file; | |
32f4334d | 231 | Lisp_Object Qfile_directory_p; |
955cbe7b PE |
232 | static Lisp_Object Qfile_regular_p; |
233 | static Lisp_Object Qfile_accessible_directory_p; | |
234 | static Lisp_Object Qfile_modes; | |
235 | static Lisp_Object Qset_file_modes; | |
236 | static Lisp_Object Qset_file_times; | |
237 | static Lisp_Object Qfile_selinux_context; | |
238 | static Lisp_Object Qset_file_selinux_context; | |
239 | static Lisp_Object Qfile_newer_than_file_p; | |
32f4334d RS |
240 | Lisp_Object Qinsert_file_contents; |
241 | Lisp_Object Qwrite_region; | |
955cbe7b PE |
242 | static Lisp_Object Qverify_visited_file_modtime; |
243 | static Lisp_Object Qset_visited_file_modtime; | |
32f4334d | 244 | |
a7ca3326 | 245 | DEFUN ("find-file-name-handler", Ffind_file_name_handler, |
16a97296 | 246 | Sfind_file_name_handler, 2, 2, 0, |
8c1a1077 PJ |
247 | doc: /* Return FILENAME's handler function for OPERATION, if it has one. |
248 | Otherwise, return nil. | |
249 | A file name is handled if one of the regular expressions in | |
250 | `file-name-handler-alist' matches it. | |
251 | ||
252 | If OPERATION equals `inhibit-file-name-operation', then we ignore | |
253 | any handlers that are members of `inhibit-file-name-handlers', | |
254 | but we still do run any other handlers. This lets handlers | |
255 | use the standard functions without calling themselves recursively. */) | |
5842a27b | 256 | (Lisp_Object filename, Lisp_Object operation) |
32f4334d | 257 | { |
642ef245 | 258 | /* This function must not munge the match data. */ |
204ee271 | 259 | Lisp_Object chain, inhibited_handlers, result; |
8d2ced53 | 260 | int pos = -1; |
642ef245 | 261 | |
204ee271 | 262 | result = Qnil; |
b7826503 | 263 | CHECK_STRING (filename); |
e4432095 | 264 | |
a65970a0 RS |
265 | if (EQ (operation, Vinhibit_file_name_operation)) |
266 | inhibited_handlers = Vinhibit_file_name_handlers; | |
267 | else | |
268 | inhibited_handlers = Qnil; | |
82c2d839 | 269 | |
93c30b5f | 270 | for (chain = Vfile_name_handler_alist; CONSP (chain); |
03699b14 | 271 | chain = XCDR (chain)) |
32f4334d RS |
272 | { |
273 | Lisp_Object elt; | |
03699b14 | 274 | elt = XCAR (chain); |
93c30b5f | 275 | if (CONSP (elt)) |
32f4334d | 276 | { |
f6c9b683 | 277 | Lisp_Object string = XCAR (elt); |
a53e2e89 | 278 | EMACS_INT match_pos; |
f6c9b683 | 279 | Lisp_Object handler = XCDR (elt); |
68780e2a RS |
280 | Lisp_Object operations = Qnil; |
281 | ||
282 | if (SYMBOLP (handler)) | |
283 | operations = Fget (handler, Qoperations); | |
f6c9b683 | 284 | |
8d2ced53 | 285 | if (STRINGP (string) |
f6c9b683 RS |
286 | && (match_pos = fast_string_match (string, filename)) > pos |
287 | && (NILP (operations) || ! NILP (Fmemq (operation, operations)))) | |
a65970a0 | 288 | { |
f6c9b683 | 289 | Lisp_Object tem; |
a65970a0 | 290 | |
03699b14 | 291 | handler = XCDR (elt); |
a65970a0 RS |
292 | tem = Fmemq (handler, inhibited_handlers); |
293 | if (NILP (tem)) | |
8d2ced53 SM |
294 | { |
295 | result = handler; | |
296 | pos = match_pos; | |
297 | } | |
a65970a0 | 298 | } |
32f4334d | 299 | } |
642ef245 JB |
300 | |
301 | QUIT; | |
32f4334d | 302 | } |
8d2ced53 | 303 | return result; |
32f4334d RS |
304 | } |
305 | \f | |
a7ca3326 | 306 | DEFUN ("file-name-directory", Ffile_name_directory, Sfile_name_directory, |
8c1a1077 PJ |
307 | 1, 1, 0, |
308 | doc: /* Return the directory component in file name FILENAME. | |
309 | Return nil if FILENAME does not include a directory. | |
78379264 | 310 | Otherwise return a directory name. |
7c2fb837 | 311 | Given a Unix syntax file name, returns a string ending in slash. */) |
5842a27b | 312 | (Lisp_Object filename) |
570d7624 | 313 | { |
100c44b7 | 314 | #ifndef DOS_NT |
5976c3fe | 315 | register const char *beg; |
100c44b7 | 316 | #else |
5976c3fe | 317 | register char *beg; |
100c44b7 | 318 | #endif |
5976c3fe | 319 | register const char *p; |
0bf2eed2 | 320 | Lisp_Object handler; |
570d7624 | 321 | |
b7826503 | 322 | CHECK_STRING (filename); |
570d7624 | 323 | |
0bf2eed2 RS |
324 | /* If the file name has special constructs in it, |
325 | call the corresponding file handler. */ | |
3b7f6e60 | 326 | handler = Ffind_file_name_handler (filename, Qfile_name_directory); |
0bf2eed2 | 327 | if (!NILP (handler)) |
3b7f6e60 | 328 | return call2 (handler, Qfile_name_directory, filename); |
0bf2eed2 | 329 | |
3b7f6e60 | 330 | filename = FILE_SYSTEM_CASE (filename); |
199607e4 | 331 | #ifdef DOS_NT |
5976c3fe PE |
332 | beg = (char *) alloca (SBYTES (filename) + 1); |
333 | memcpy (beg, SSDATA (filename), SBYTES (filename) + 1); | |
0f3f018c | 334 | #else |
5976c3fe | 335 | beg = SSDATA (filename); |
199607e4 | 336 | #endif |
d5db4077 | 337 | p = beg + SBYTES (filename); |
570d7624 | 338 | |
199607e4 | 339 | while (p != beg && !IS_DIRECTORY_SEP (p[-1]) |
199607e4 | 340 | #ifdef DOS_NT |
ba14e174 RS |
341 | /* only recognise drive specifier at the beginning */ |
342 | && !(p[-1] == ':' | |
343 | /* handle the "/:d:foo" and "/:foo" cases correctly */ | |
344 | && ((p == beg + 2 && !IS_DIRECTORY_SEP (*beg)) | |
345 | || (p == beg + 4 && IS_DIRECTORY_SEP (*beg)))) | |
199607e4 | 346 | #endif |
570d7624 JB |
347 | ) p--; |
348 | ||
349 | if (p == beg) | |
350 | return Qnil; | |
5e570b75 | 351 | #ifdef DOS_NT |
4c3c22f3 | 352 | /* Expansion of "c:" to drive and default directory. */ |
ba14e174 | 353 | if (p[-1] == ':') |
4c3c22f3 | 354 | { |
4c3c22f3 | 355 | /* MAXPATHLEN+1 is guaranteed to be enough space for getdefdir. */ |
5976c3fe PE |
356 | char *res = alloca (MAXPATHLEN + 1); |
357 | char *r = res; | |
ba14e174 RS |
358 | |
359 | if (p == beg + 4 && IS_DIRECTORY_SEP (*beg) && beg[1] == ':') | |
360 | { | |
361 | strncpy (res, beg, 2); | |
362 | beg += 2; | |
363 | r += 2; | |
364 | } | |
365 | ||
5976c3fe | 366 | if (getdefdir (toupper ((unsigned char) *beg) - 'A' + 1, r)) |
4c3c22f3 | 367 | { |
199607e4 | 368 | if (!IS_DIRECTORY_SEP (res[strlen (res) - 1])) |
4c3c22f3 RS |
369 | strcat (res, "/"); |
370 | beg = res; | |
371 | p = beg + strlen (beg); | |
372 | } | |
373 | } | |
087fc47a | 374 | dostounix_filename (beg); |
5e570b75 | 375 | #endif /* DOS_NT */ |
60d67b83 | 376 | |
d7231f93 | 377 | return make_specified_string (beg, -1, p - beg, STRING_MULTIBYTE (filename)); |
570d7624 JB |
378 | } |
379 | ||
a7ca3326 | 380 | DEFUN ("file-name-nondirectory", Ffile_name_nondirectory, |
60d67b83 | 381 | Sfile_name_nondirectory, 1, 1, 0, |
8c1a1077 PJ |
382 | doc: /* Return file name FILENAME sans its directory. |
383 | For example, in a Unix-syntax file name, | |
384 | this is everything after the last slash, | |
385 | or the entire name if it contains no slash. */) | |
5842a27b | 386 | (Lisp_Object filename) |
570d7624 | 387 | { |
5976c3fe | 388 | register const char *beg, *p, *end; |
0bf2eed2 | 389 | Lisp_Object handler; |
570d7624 | 390 | |
b7826503 | 391 | CHECK_STRING (filename); |
570d7624 | 392 | |
0bf2eed2 RS |
393 | /* If the file name has special constructs in it, |
394 | call the corresponding file handler. */ | |
3b7f6e60 | 395 | handler = Ffind_file_name_handler (filename, Qfile_name_nondirectory); |
0bf2eed2 | 396 | if (!NILP (handler)) |
3b7f6e60 | 397 | return call2 (handler, Qfile_name_nondirectory, filename); |
0bf2eed2 | 398 | |
5976c3fe | 399 | beg = SSDATA (filename); |
d5db4077 | 400 | end = p = beg + SBYTES (filename); |
570d7624 | 401 | |
199607e4 | 402 | while (p != beg && !IS_DIRECTORY_SEP (p[-1]) |
199607e4 RS |
403 | #ifdef DOS_NT |
404 | /* only recognise drive specifier at beginning */ | |
ba14e174 RS |
405 | && !(p[-1] == ':' |
406 | /* handle the "/:d:foo" case correctly */ | |
407 | && (p == beg + 2 || (p == beg + 4 && IS_DIRECTORY_SEP (*beg)))) | |
199607e4 | 408 | #endif |
60d67b83 RS |
409 | ) |
410 | p--; | |
570d7624 | 411 | |
d7231f93 | 412 | return make_specified_string (p, -1, end - p, STRING_MULTIBYTE (filename)); |
570d7624 | 413 | } |
642ef245 | 414 | |
a7ca3326 | 415 | DEFUN ("unhandled-file-name-directory", Funhandled_file_name_directory, |
60d67b83 | 416 | Sunhandled_file_name_directory, 1, 1, 0, |
8c1a1077 PJ |
417 | doc: /* Return a directly usable directory name somehow associated with FILENAME. |
418 | A `directly usable' directory name is one that may be used without the | |
419 | intervention of any file handler. | |
420 | If FILENAME is a directly usable file itself, return | |
421 | \(file-name-directory FILENAME). | |
ca319910 SM |
422 | If FILENAME refers to a file which is not accessible from a local process, |
423 | then this should return nil. | |
8c1a1077 PJ |
424 | The `call-process' and `start-process' functions use this function to |
425 | get a current directory to run processes in. */) | |
5842a27b | 426 | (Lisp_Object filename) |
642ef245 JB |
427 | { |
428 | Lisp_Object handler; | |
429 | ||
430 | /* If the file name has special constructs in it, | |
431 | call the corresponding file handler. */ | |
49307295 | 432 | handler = Ffind_file_name_handler (filename, Qunhandled_file_name_directory); |
642ef245 JB |
433 | if (!NILP (handler)) |
434 | return call2 (handler, Qunhandled_file_name_directory, filename); | |
435 | ||
436 | return Ffile_name_directory (filename); | |
437 | } | |
438 | ||
570d7624 | 439 | \f |
f14b7e14 | 440 | static char * |
2893f146 | 441 | file_name_as_directory (char *out, const char *in) |
570d7624 JB |
442 | { |
443 | int size = strlen (in) - 1; | |
444 | ||
445 | strcpy (out, in); | |
446 | ||
8aa3a244 RS |
447 | if (size < 0) |
448 | { | |
154a307d KH |
449 | out[0] = '.'; |
450 | out[1] = '/'; | |
451 | out[2] = 0; | |
8aa3a244 RS |
452 | return out; |
453 | } | |
454 | ||
570d7624 | 455 | /* For Unix syntax, Append a slash if necessary */ |
199607e4 | 456 | if (!IS_DIRECTORY_SEP (out[size])) |
5e570b75 | 457 | { |
087fc47a | 458 | out[size + 1] = DIRECTORY_SEP; |
5e570b75 RS |
459 | out[size + 2] = '\0'; |
460 | } | |
199607e4 | 461 | #ifdef DOS_NT |
087fc47a | 462 | dostounix_filename (out); |
199607e4 | 463 | #endif |
570d7624 JB |
464 | return out; |
465 | } | |
466 | ||
a7ca3326 | 467 | DEFUN ("file-name-as-directory", Ffile_name_as_directory, |
570d7624 | 468 | Sfile_name_as_directory, 1, 1, 0, |
0dac4f85 | 469 | doc: /* Return a string representing the file name FILE interpreted as a directory. |
8c1a1077 PJ |
470 | This operation exists because a directory is also a file, but its name as |
471 | a directory is different from its name as a file. | |
472 | The result can be used as the value of `default-directory' | |
473 | or passed as second argument to `expand-file-name'. | |
7c2fb837 | 474 | For a Unix-syntax file name, just appends a slash. */) |
5842a27b | 475 | (Lisp_Object file) |
570d7624 JB |
476 | { |
477 | char *buf; | |
0bf2eed2 | 478 | Lisp_Object handler; |
570d7624 | 479 | |
b7826503 | 480 | CHECK_STRING (file); |
265a9e55 | 481 | if (NILP (file)) |
570d7624 | 482 | return Qnil; |
0bf2eed2 RS |
483 | |
484 | /* If the file name has special constructs in it, | |
485 | call the corresponding file handler. */ | |
49307295 | 486 | handler = Ffind_file_name_handler (file, Qfile_name_as_directory); |
0bf2eed2 RS |
487 | if (!NILP (handler)) |
488 | return call2 (handler, Qfile_name_as_directory, file); | |
489 | ||
d5db4077 | 490 | buf = (char *) alloca (SBYTES (file) + 10); |
42a5b22f | 491 | file_name_as_directory (buf, SSDATA (file)); |
d7231f93 KH |
492 | return make_specified_string (buf, -1, strlen (buf), |
493 | STRING_MULTIBYTE (file)); | |
570d7624 JB |
494 | } |
495 | \f | |
496 | /* | |
497 | * Convert from directory name to filename. | |
199607e4 | 498 | * On UNIX, it's simple: just make sure there isn't a terminating / |
570d7624 JB |
499 | |
500 | * Value is nonzero if the string output is different from the input. | |
501 | */ | |
502 | ||
f14b7e14 | 503 | static int |
971de7fb | 504 | directory_file_name (char *src, char *dst) |
570d7624 JB |
505 | { |
506 | long slen; | |
570d7624 JB |
507 | |
508 | slen = strlen (src); | |
7c2fb837 | 509 | |
570d7624 JB |
510 | /* Process as Unix format: just remove any final slash. |
511 | But leave "/" unchanged; do not change it to "". */ | |
512 | strcpy (dst, src); | |
199607e4 | 513 | if (slen > 1 |
5e570b75 | 514 | && IS_DIRECTORY_SEP (dst[slen - 1]) |
4592782e RS |
515 | #ifdef DOS_NT |
516 | && !IS_ANY_SEP (dst[slen - 2]) | |
517 | #endif | |
518 | ) | |
570d7624 | 519 | dst[slen - 1] = 0; |
199607e4 | 520 | #ifdef DOS_NT |
087fc47a | 521 | dostounix_filename (dst); |
125feee8 | 522 | #endif |
570d7624 JB |
523 | return 1; |
524 | } | |
525 | ||
a7ca3326 | 526 | DEFUN ("directory-file-name", Fdirectory_file_name, Sdirectory_file_name, |
8c1a1077 PJ |
527 | 1, 1, 0, |
528 | doc: /* Returns the file name of the directory named DIRECTORY. | |
529 | This is the name of the file that holds the data for the directory DIRECTORY. | |
530 | This operation exists because a directory is also a file, but its name as | |
531 | a directory is different from its name as a file. | |
7c2fb837 | 532 | In Unix-syntax, this function just removes the final slash. */) |
5842a27b | 533 | (Lisp_Object directory) |
570d7624 JB |
534 | { |
535 | char *buf; | |
0bf2eed2 | 536 | Lisp_Object handler; |
570d7624 | 537 | |
b7826503 | 538 | CHECK_STRING (directory); |
570d7624 | 539 | |
265a9e55 | 540 | if (NILP (directory)) |
570d7624 | 541 | return Qnil; |
0bf2eed2 RS |
542 | |
543 | /* If the file name has special constructs in it, | |
544 | call the corresponding file handler. */ | |
49307295 | 545 | handler = Ffind_file_name_handler (directory, Qdirectory_file_name); |
0bf2eed2 RS |
546 | if (!NILP (handler)) |
547 | return call2 (handler, Qdirectory_file_name, directory); | |
548 | ||
d5db4077 | 549 | buf = (char *) alloca (SBYTES (directory) + 20); |
42a5b22f | 550 | directory_file_name (SSDATA (directory), buf); |
d7231f93 KH |
551 | return make_specified_string (buf, -1, strlen (buf), |
552 | STRING_MULTIBYTE (directory)); | |
570d7624 JB |
553 | } |
554 | ||
91433552 | 555 | static const char make_temp_name_tbl[64] = |
3ce839e4 RS |
556 | { |
557 | 'A','B','C','D','E','F','G','H', | |
558 | 'I','J','K','L','M','N','O','P', | |
559 | 'Q','R','S','T','U','V','W','X', | |
560 | 'Y','Z','a','b','c','d','e','f', | |
561 | 'g','h','i','j','k','l','m','n', | |
562 | 'o','p','q','r','s','t','u','v', | |
563 | 'w','x','y','z','0','1','2','3', | |
564 | '4','5','6','7','8','9','-','_' | |
565 | }; | |
cb613bb8 | 566 | |
3ce839e4 RS |
567 | static unsigned make_temp_name_count, make_temp_name_count_initialized_p; |
568 | ||
cb613bb8 | 569 | /* Value is a temporary file name starting with PREFIX, a string. |
efdc16c9 | 570 | |
cb613bb8 GM |
571 | The Emacs process number forms part of the result, so there is |
572 | no danger of generating a name being used by another process. | |
573 | In addition, this function makes an attempt to choose a name | |
574 | which has no existing file. To make this work, PREFIX should be | |
575 | an absolute file name. | |
efdc16c9 | 576 | |
cb613bb8 GM |
577 | BASE64_P non-zero means add the pid as 3 characters in base64 |
578 | encoding. In this case, 6 characters will be added to PREFIX to | |
579 | form the file name. Otherwise, if Emacs is running on a system | |
580 | with long file names, add the pid as a decimal number. | |
581 | ||
582 | This function signals an error if no unique file name could be | |
583 | generated. */ | |
584 | ||
585 | Lisp_Object | |
971de7fb | 586 | make_temp_name (Lisp_Object prefix, int base64_p) |
570d7624 JB |
587 | { |
588 | Lisp_Object val; | |
0cedd530 | 589 | int len, clen; |
3ce839e4 | 590 | int pid; |
5976c3fe | 591 | char *p, *data; |
3ce839e4 RS |
592 | char pidbuf[20]; |
593 | int pidlen; | |
efdc16c9 | 594 | |
b7826503 | 595 | CHECK_STRING (prefix); |
3ce839e4 RS |
596 | |
597 | /* VAL is created by adding 6 characters to PREFIX. The first | |
598 | three are the PID of this process, in base 64, and the second | |
599 | three are incremented if the file already exists. This ensures | |
600 | 262144 unique file names per PID per PREFIX. */ | |
601 | ||
602 | pid = (int) getpid (); | |
603 | ||
cb613bb8 GM |
604 | if (base64_p) |
605 | { | |
606 | pidbuf[0] = make_temp_name_tbl[pid & 63], pid >>= 6; | |
607 | pidbuf[1] = make_temp_name_tbl[pid & 63], pid >>= 6; | |
608 | pidbuf[2] = make_temp_name_tbl[pid & 63], pid >>= 6; | |
609 | pidlen = 3; | |
610 | } | |
611 | else | |
612 | { | |
3ce839e4 | 613 | #ifdef HAVE_LONG_FILE_NAMES |
cb613bb8 GM |
614 | sprintf (pidbuf, "%d", pid); |
615 | pidlen = strlen (pidbuf); | |
3a3bfb18 | 616 | #else |
cb613bb8 GM |
617 | pidbuf[0] = make_temp_name_tbl[pid & 63], pid >>= 6; |
618 | pidbuf[1] = make_temp_name_tbl[pid & 63], pid >>= 6; | |
619 | pidbuf[2] = make_temp_name_tbl[pid & 63], pid >>= 6; | |
620 | pidlen = 3; | |
3ce839e4 | 621 | #endif |
cb613bb8 | 622 | } |
efdc16c9 | 623 | |
0cedd530 SM |
624 | len = SBYTES (prefix); clen = SCHARS (prefix); |
625 | val = make_uninit_multibyte_string (clen + 3 + pidlen, len + 3 + pidlen); | |
626 | if (!STRING_MULTIBYTE (prefix)) | |
627 | STRING_SET_UNIBYTE (val); | |
5976c3fe PE |
628 | data = SSDATA (val); |
629 | memcpy (data, SSDATA (prefix), len); | |
3ce839e4 RS |
630 | p = data + len; |
631 | ||
72af86bd | 632 | memcpy (p, pidbuf, pidlen); |
3ce839e4 RS |
633 | p += pidlen; |
634 | ||
635 | /* Here we try to minimize useless stat'ing when this function is | |
636 | invoked many times successively with the same PREFIX. We achieve | |
637 | this by initializing count to a random value, and incrementing it | |
f6a492a9 RS |
638 | afterwards. |
639 | ||
640 | We don't want make-temp-name to be called while dumping, | |
641 | because then make_temp_name_count_initialized_p would get set | |
642 | and then make_temp_name_count would not be set when Emacs starts. */ | |
643 | ||
3ce839e4 RS |
644 | if (!make_temp_name_count_initialized_p) |
645 | { | |
646 | make_temp_name_count = (unsigned) time (NULL); | |
647 | make_temp_name_count_initialized_p = 1; | |
648 | } | |
649 | ||
650 | while (1) | |
651 | { | |
652 | struct stat ignored; | |
8a7777fc | 653 | unsigned num = make_temp_name_count; |
3ce839e4 RS |
654 | |
655 | p[0] = make_temp_name_tbl[num & 63], num >>= 6; | |
656 | p[1] = make_temp_name_tbl[num & 63], num >>= 6; | |
657 | p[2] = make_temp_name_tbl[num & 63], num >>= 6; | |
658 | ||
8a7777fc RS |
659 | /* Poor man's congruential RN generator. Replace with |
660 | ++make_temp_name_count for debugging. */ | |
661 | make_temp_name_count += 25229; | |
662 | make_temp_name_count %= 225307; | |
663 | ||
3ce839e4 RS |
664 | if (stat (data, &ignored) < 0) |
665 | { | |
666 | /* We want to return only if errno is ENOENT. */ | |
667 | if (errno == ENOENT) | |
668 | return val; | |
669 | else | |
670 | /* The error here is dubious, but there is little else we | |
671 | can do. The alternatives are to return nil, which is | |
672 | as bad as (and in many cases worse than) throwing the | |
673 | error, or to ignore the error, which will likely result | |
8a7777fc | 674 | in looping through 225307 stat's, which is not only |
410ed5c3 PE |
675 | dog-slow, but also useless since eventually nil would |
676 | have to be returned anyway. */ | |
9869bb0b | 677 | report_file_error ("Cannot create temporary name for prefix", |
3ce839e4 RS |
678 | Fcons (prefix, Qnil)); |
679 | /* not reached */ | |
680 | } | |
681 | } | |
570d7624 | 682 | } |
3ce839e4 | 683 | |
cb613bb8 GM |
684 | |
685 | DEFUN ("make-temp-name", Fmake_temp_name, Smake_temp_name, 1, 1, 0, | |
8c1a1077 PJ |
686 | doc: /* Generate temporary file name (string) starting with PREFIX (a string). |
687 | The Emacs process number forms part of the result, | |
688 | so there is no danger of generating a name being used by another process. | |
689 | ||
690 | In addition, this function makes an attempt to choose a name | |
691 | which has no existing file. To make this work, | |
692 | PREFIX should be an absolute file name. | |
693 | ||
694 | There is a race condition between calling `make-temp-name' and creating the | |
695 | file which opens all kinds of security holes. For that reason, you should | |
f9e6f049 RS |
696 | probably use `make-temp-file' instead, except in three circumstances: |
697 | ||
698 | * If you are creating the file in the user's home directory. | |
699 | * If you are creating a directory rather than an ordinary file. | |
700 | * If you are taking special precautions as `make-temp-file' does. */) | |
5842a27b | 701 | (Lisp_Object prefix) |
cb613bb8 GM |
702 | { |
703 | return make_temp_name (prefix, 0); | |
704 | } | |
705 | ||
706 | ||
570d7624 | 707 | \f |
a7ca3326 | 708 | DEFUN ("expand-file-name", Fexpand_file_name, Sexpand_file_name, 1, 2, 0, |
8c1a1077 PJ |
709 | doc: /* Convert filename NAME to absolute, and canonicalize it. |
710 | Second arg DEFAULT-DIRECTORY is directory to start with if NAME is relative | |
78379264 | 711 | \(does not start with slash or tilde); if DEFAULT-DIRECTORY is nil or missing, |
a4e03fe5 | 712 | the current buffer's value of `default-directory' is used. |
1b2a627f EZ |
713 | NAME should be a string that is a valid file name for the underlying |
714 | filesystem. | |
8c1a1077 PJ |
715 | File name components that are `.' are removed, and |
716 | so are file name components followed by `..', along with the `..' itself; | |
717 | note that these simplifications are done without checking the resulting | |
718 | file names in the file system. | |
15579471 EZ |
719 | Multiple consecutive slashes are collapsed into a single slash, |
720 | except at the beginning of the file name when they are significant (e.g., | |
721 | UNC file names on MS-Windows.) | |
8c1a1077 PJ |
722 | An initial `~/' expands to your home directory. |
723 | An initial `~USER/' expands to USER's home directory. | |
07114296 CY |
724 | See also the function `substitute-in-file-name'. |
725 | ||
726 | For technical reasons, this function can return correct but | |
727 | non-intuitive results for the root directory; for instance, | |
728 | \(expand-file-name ".." "/") returns "/..". For this reason, use | |
15579471 | 729 | \(directory-file-name (file-name-directory dirname)) to traverse a |
07114296 | 730 | filesystem tree, not (expand-file-name ".." dirname). */) |
5842a27b | 731 | (Lisp_Object name, Lisp_Object default_directory) |
570d7624 | 732 | { |
5b5a2ea1 SM |
733 | /* These point to SDATA and need to be careful with string-relocation |
734 | during GC (via DECODE_FILE). */ | |
2893f146 PE |
735 | char *nm; |
736 | const char *newdir; | |
5b5a2ea1 | 737 | /* This should only point to alloca'd data. */ |
5976c3fe | 738 | char *target; |
199607e4 | 739 | |
570d7624 | 740 | int tlen; |
570d7624 | 741 | struct passwd *pw; |
5e570b75 | 742 | #ifdef DOS_NT |
199607e4 | 743 | int drive = 0; |
9a1dc3be | 744 | int collapse_newdir = 1; |
f0f95d31 | 745 | int is_escaped = 0; |
5e570b75 | 746 | #endif /* DOS_NT */ |
199607e4 | 747 | int length; |
beb402de | 748 | Lisp_Object handler, result; |
2b046a72 | 749 | int multibyte; |
9c06a1f3 | 750 | Lisp_Object hdir; |
199607e4 | 751 | |
b7826503 | 752 | CHECK_STRING (name); |
570d7624 | 753 | |
0bf2eed2 RS |
754 | /* If the file name has special constructs in it, |
755 | call the corresponding file handler. */ | |
49307295 | 756 | handler = Ffind_file_name_handler (name, Qexpand_file_name); |
0bf2eed2 | 757 | if (!NILP (handler)) |
3b7f6e60 | 758 | return call3 (handler, Qexpand_file_name, name, default_directory); |
58fc9587 | 759 | |
3b7f6e60 EN |
760 | /* Use the buffer's default-directory if DEFAULT_DIRECTORY is omitted. */ |
761 | if (NILP (default_directory)) | |
4b4deea2 | 762 | default_directory = BVAR (current_buffer, directory); |
82330e7f | 763 | if (! STRINGP (default_directory)) |
dd693537 EZ |
764 | { |
765 | #ifdef DOS_NT | |
766 | /* "/" is not considered a root directory on DOS_NT, so using "/" | |
767 | here causes an infinite recursion in, e.g., the following: | |
768 | ||
769 | (let (default-directory) | |
770 | (expand-file-name "a")) | |
771 | ||
772 | To avoid this, we set default_directory to the root of the | |
773 | current drive. */ | |
dd693537 EZ |
774 | default_directory = build_string (emacs_root_dir ()); |
775 | #else | |
776 | default_directory = build_string ("/"); | |
777 | #endif | |
778 | } | |
58fc9587 | 779 | |
3b7f6e60 | 780 | if (!NILP (default_directory)) |
273e0829 | 781 | { |
3b7f6e60 | 782 | handler = Ffind_file_name_handler (default_directory, Qexpand_file_name); |
273e0829 | 783 | if (!NILP (handler)) |
3b7f6e60 | 784 | return call3 (handler, Qexpand_file_name, name, default_directory); |
273e0829 | 785 | } |
0bf2eed2 | 786 | |
5b5a2ea1 | 787 | { |
5976c3fe | 788 | char *o = SSDATA (default_directory); |
5b5a2ea1 SM |
789 | |
790 | /* Make sure DEFAULT_DIRECTORY is properly expanded. | |
791 | It would be better to do this down below where we actually use | |
792 | default_directory. Unfortunately, calling Fexpand_file_name recursively | |
793 | could invoke GC, and the strings might be relocated. This would | |
794 | be annoying because we have pointers into strings lying around | |
795 | that would need adjusting, and people would add new pointers to | |
796 | the code and forget to adjust them, resulting in intermittent bugs. | |
797 | Putting this call here avoids all that crud. | |
798 | ||
799 | The EQ test avoids infinite recursion. */ | |
800 | if (! NILP (default_directory) && !EQ (default_directory, name) | |
801 | /* Save time in some common cases - as long as default_directory | |
802 | is not relative, it can be canonicalized with name below (if it | |
803 | is needed at all) without requiring it to be expanded now. */ | |
01937013 | 804 | #ifdef DOS_NT |
5b5a2ea1 SM |
805 | /* Detect MSDOS file names with drive specifiers. */ |
806 | && ! (IS_DRIVE (o[0]) && IS_DEVICE_SEP (o[1]) | |
807 | && IS_DIRECTORY_SEP (o[2])) | |
199607e4 | 808 | #ifdef WINDOWSNT |
5b5a2ea1 SM |
809 | /* Detect Windows file names in UNC format. */ |
810 | && ! (IS_DIRECTORY_SEP (o[0]) && IS_DIRECTORY_SEP (o[1])) | |
01937013 | 811 | #endif |
199607e4 RS |
812 | #else /* not DOS_NT */ |
813 | /* Detect Unix absolute file names (/... alone is not absolute on | |
814 | DOS or Windows). */ | |
5b5a2ea1 | 815 | && ! (IS_DIRECTORY_SEP (o[0])) |
199607e4 | 816 | #endif /* not DOS_NT */ |
5b5a2ea1 SM |
817 | ) |
818 | { | |
819 | struct gcpro gcpro1; | |
f14b1c68 | 820 | |
5b5a2ea1 SM |
821 | GCPRO1 (name); |
822 | default_directory = Fexpand_file_name (default_directory, Qnil); | |
823 | UNGCPRO; | |
824 | } | |
825 | } | |
4c3c22f3 | 826 | name = FILE_SYSTEM_CASE (name); |
2b046a72 | 827 | multibyte = STRING_MULTIBYTE (name); |
6d060996 KH |
828 | if (multibyte != STRING_MULTIBYTE (default_directory)) |
829 | { | |
830 | if (multibyte) | |
831 | default_directory = string_to_multibyte (default_directory); | |
832 | else | |
833 | { | |
834 | name = string_to_multibyte (name); | |
835 | multibyte = 1; | |
836 | } | |
837 | } | |
838 | ||
565f0b98 | 839 | /* Make a local copy of nm[] to protect it from GC in DECODE_FILE below. */ |
5976c3fe PE |
840 | nm = (char *) alloca (SBYTES (name) + 1); |
841 | memcpy (nm, SSDATA (name), SBYTES (name) + 1); | |
199607e4 | 842 | |
565f0b98 | 843 | #ifdef DOS_NT |
f0f95d31 RS |
844 | /* Note if special escape prefix is present, but remove for now. */ |
845 | if (nm[0] == '/' && nm[1] == ':') | |
846 | { | |
847 | is_escaped = 1; | |
848 | nm += 2; | |
849 | } | |
850 | ||
199607e4 | 851 | /* Find and remove drive specifier if present; this makes nm absolute |
f0f95d31 RS |
852 | even if the rest of the name appears to be relative. Only look for |
853 | drive specifier at the beginning. */ | |
854 | if (IS_DRIVE (nm[0]) && IS_DEVICE_SEP (nm[1])) | |
855 | { | |
5976c3fe | 856 | drive = (unsigned char) nm[0]; |
f0f95d31 RS |
857 | nm += 2; |
858 | } | |
bb1ff1f4 GV |
859 | |
860 | #ifdef WINDOWSNT | |
861 | /* If we see "c://somedir", we want to strip the first slash after the | |
862 | colon when stripping the drive letter. Otherwise, this expands to | |
863 | "//somedir". */ | |
864 | if (drive && IS_DIRECTORY_SEP (nm[0]) && IS_DIRECTORY_SEP (nm[1])) | |
865 | nm++; | |
4c3c22f3 | 866 | |
199607e4 RS |
867 | /* Discard any previous drive specifier if nm is now in UNC format. */ |
868 | if (IS_DIRECTORY_SEP (nm[0]) && IS_DIRECTORY_SEP (nm[1])) | |
869 | { | |
870 | drive = 0; | |
871 | } | |
5b5a2ea1 SM |
872 | #endif /* WINDOWSNT */ |
873 | #endif /* DOS_NT */ | |
199607e4 | 874 | |
214378ec GM |
875 | /* If nm is absolute, look for `/./' or `/../' or `//''sequences; if |
876 | none are found, we can probably return right away. We will avoid | |
877 | allocating a new string if name is already fully expanded. */ | |
570d7624 | 878 | if ( |
5e570b75 | 879 | IS_DIRECTORY_SEP (nm[0]) |
199607e4 | 880 | #ifdef MSDOS |
f0f95d31 | 881 | && drive && !is_escaped |
199607e4 RS |
882 | #endif |
883 | #ifdef WINDOWSNT | |
f0f95d31 | 884 | && (drive || IS_DIRECTORY_SEP (nm[1])) && !is_escaped |
199607e4 | 885 | #endif |
570d7624 JB |
886 | ) |
887 | { | |
f14b1c68 JB |
888 | /* If it turns out that the filename we want to return is just a |
889 | suffix of FILENAME, we don't need to go through and edit | |
890 | things; we just need to construct a new string using data | |
891 | starting at the middle of FILENAME. If we set lose to a | |
892 | non-zero value, that means we've discovered that we can't do | |
893 | that cool trick. */ | |
894 | int lose = 0; | |
5976c3fe | 895 | char *p = nm; |
f14b1c68 | 896 | |
570d7624 JB |
897 | while (*p) |
898 | { | |
199607e4 | 899 | /* Since we know the name is absolute, we can assume that each |
c77d647e JB |
900 | element starts with a "/". */ |
901 | ||
c77d647e | 902 | /* "." and ".." are hairy. */ |
5e570b75 | 903 | if (IS_DIRECTORY_SEP (p[0]) |
c77d647e | 904 | && p[1] == '.' |
5e570b75 | 905 | && (IS_DIRECTORY_SEP (p[2]) |
c77d647e | 906 | || p[2] == 0 |
5e570b75 | 907 | || (p[2] == '.' && (IS_DIRECTORY_SEP (p[3]) |
c77d647e | 908 | || p[3] == 0)))) |
570d7624 | 909 | lose = 1; |
214378ec GM |
910 | /* We want to replace multiple `/' in a row with a single |
911 | slash. */ | |
912 | else if (p > nm | |
913 | && IS_DIRECTORY_SEP (p[0]) | |
914 | && IS_DIRECTORY_SEP (p[1])) | |
915 | lose = 1; | |
570d7624 JB |
916 | p++; |
917 | } | |
918 | if (!lose) | |
919 | { | |
199607e4 | 920 | #ifdef DOS_NT |
087fc47a JB |
921 | /* Make sure directories are all separated with /, but |
922 | avoid allocation of a new string when not required. */ | |
923 | dostounix_filename (nm); | |
199607e4 RS |
924 | #ifdef WINDOWSNT |
925 | if (IS_DIRECTORY_SEP (nm[1])) | |
926 | { | |
42a5b22f | 927 | if (strcmp (nm, SSDATA (name)) != 0) |
2b046a72 | 928 | name = make_specified_string (nm, -1, strlen (nm), multibyte); |
199607e4 RS |
929 | } |
930 | else | |
931 | #endif | |
932 | /* drive must be set, so this is okay */ | |
5976c3fe | 933 | if (strcmp (nm - 2, SSDATA (name)) != 0) |
199607e4 | 934 | { |
3f817c73 KH |
935 | char temp[] = " :"; |
936 | ||
2b046a72 | 937 | name = make_specified_string (nm, -1, p - nm, multibyte); |
3f817c73 KH |
938 | temp[0] = DRIVE_LETTER (drive); |
939 | name = concat2 (build_string (temp), name); | |
199607e4 RS |
940 | } |
941 | return name; | |
942 | #else /* not DOS_NT */ | |
42a5b22f | 943 | if (strcmp (nm, SSDATA (name)) == 0) |
570d7624 | 944 | return name; |
2b046a72 | 945 | return make_specified_string (nm, -1, strlen (nm), multibyte); |
5e570b75 | 946 | #endif /* not DOS_NT */ |
570d7624 JB |
947 | } |
948 | } | |
949 | ||
199607e4 RS |
950 | /* At this point, nm might or might not be an absolute file name. We |
951 | need to expand ~ or ~user if present, otherwise prefix nm with | |
952 | default_directory if nm is not absolute, and finally collapse /./ | |
953 | and /foo/../ sequences. | |
954 | ||
955 | We set newdir to be the appropriate prefix if one is needed: | |
956 | - the relevant user directory if nm starts with ~ or ~user | |
957 | - the specified drive's working dir (DOS/NT only) if nm does not | |
958 | start with / | |
959 | - the value of default_directory. | |
960 | ||
961 | Note that these prefixes are not guaranteed to be absolute (except | |
962 | for the working dir of a drive). Therefore, to ensure we always | |
963 | return an absolute name, if the final prefix is not absolute we | |
964 | append it to the current working directory. */ | |
570d7624 JB |
965 | |
966 | newdir = 0; | |
967 | ||
968 | if (nm[0] == '~') /* prefix ~ */ | |
c77d647e | 969 | { |
5e570b75 | 970 | if (IS_DIRECTORY_SEP (nm[1]) |
c77d647e JB |
971 | || nm[1] == 0) /* ~ by itself */ |
972 | { | |
6d557778 EZ |
973 | Lisp_Object tem; |
974 | ||
5976c3fe PE |
975 | if (!(newdir = egetenv ("HOME"))) |
976 | newdir = ""; | |
199607e4 | 977 | nm++; |
6d557778 EZ |
978 | /* egetenv may return a unibyte string, which will bite us since |
979 | we expect the directory to be multibyte. */ | |
9c06a1f3 EZ |
980 | tem = build_string (newdir); |
981 | if (!STRING_MULTIBYTE (tem)) | |
982 | { | |
983 | hdir = DECODE_FILE (tem); | |
5976c3fe | 984 | newdir = SSDATA (hdir); |
9c06a1f3 | 985 | } |
5e570b75 | 986 | #ifdef DOS_NT |
9a1dc3be | 987 | collapse_newdir = 0; |
4c3c22f3 | 988 | #endif |
c77d647e JB |
989 | } |
990 | else /* ~user/filename */ | |
991 | { | |
5976c3fe | 992 | char *o, *p; |
7c2fb837 | 993 | for (p = nm; *p && (!IS_DIRECTORY_SEP (*p)); p++); |
5b5a2ea1 | 994 | o = alloca (p - nm + 1); |
72af86bd | 995 | memcpy (o, nm, p - nm); |
c77d647e JB |
996 | o [p - nm] = 0; |
997 | ||
67c08d6c | 998 | BLOCK_INPUT; |
c77d647e | 999 | pw = (struct passwd *) getpwnam (o + 1); |
67c08d6c | 1000 | UNBLOCK_INPUT; |
c77d647e JB |
1001 | if (pw) |
1002 | { | |
5976c3fe | 1003 | newdir = pw->pw_dir; |
c77d647e | 1004 | nm = p; |
199607e4 | 1005 | #ifdef DOS_NT |
9a1dc3be | 1006 | collapse_newdir = 0; |
199607e4 | 1007 | #endif |
c77d647e | 1008 | } |
e5d77022 | 1009 | |
c77d647e JB |
1010 | /* If we don't find a user of that name, leave the name |
1011 | unchanged; don't move nm forward to p. */ | |
1012 | } | |
1013 | } | |
570d7624 | 1014 | |
5e570b75 | 1015 | #ifdef DOS_NT |
199607e4 RS |
1016 | /* On DOS and Windows, nm is absolute if a drive name was specified; |
1017 | use the drive's current directory as the prefix if needed. */ | |
1018 | if (!newdir && drive) | |
1019 | { | |
1020 | /* Get default directory if needed to make nm absolute. */ | |
2893f146 | 1021 | char *adir = NULL; |
199607e4 RS |
1022 | if (!IS_DIRECTORY_SEP (nm[0])) |
1023 | { | |
2893f146 PE |
1024 | adir = alloca (MAXPATHLEN + 1); |
1025 | if (!getdefdir (toupper (drive) - 'A' + 1, adir)) | |
1026 | adir = NULL; | |
199607e4 | 1027 | } |
2893f146 | 1028 | if (!adir) |
199607e4 RS |
1029 | { |
1030 | /* Either nm starts with /, or drive isn't mounted. */ | |
2893f146 PE |
1031 | adir = alloca (4); |
1032 | adir[0] = DRIVE_LETTER (drive); | |
1033 | adir[1] = ':'; | |
1034 | adir[2] = '/'; | |
1035 | adir[3] = 0; | |
199607e4 | 1036 | } |
2893f146 | 1037 | newdir = adir; |
199607e4 | 1038 | } |
5e570b75 | 1039 | #endif /* DOS_NT */ |
199607e4 RS |
1040 | |
1041 | /* Finally, if no prefix has been specified and nm is not absolute, | |
1042 | then it must be expanded relative to default_directory. */ | |
1043 | ||
34097368 | 1044 | if (1 |
199607e4 RS |
1045 | #ifndef DOS_NT |
1046 | /* /... alone is not absolute on DOS and Windows. */ | |
34097368 | 1047 | && !IS_DIRECTORY_SEP (nm[0]) |
199607e4 RS |
1048 | #endif |
1049 | #ifdef WINDOWSNT | |
34097368 | 1050 | && !(IS_DIRECTORY_SEP (nm[0]) && IS_DIRECTORY_SEP (nm[1])) |
199607e4 | 1051 | #endif |
570d7624 JB |
1052 | && !newdir) |
1053 | { | |
5976c3fe | 1054 | newdir = SSDATA (default_directory); |
f0f95d31 RS |
1055 | #ifdef DOS_NT |
1056 | /* Note if special escape prefix is present, but remove for now. */ | |
1057 | if (newdir[0] == '/' && newdir[1] == ':') | |
1058 | { | |
1059 | is_escaped = 1; | |
1060 | newdir += 2; | |
1061 | } | |
1062 | #endif | |
570d7624 JB |
1063 | } |
1064 | ||
5e570b75 | 1065 | #ifdef DOS_NT |
199607e4 RS |
1066 | if (newdir) |
1067 | { | |
1068 | /* First ensure newdir is an absolute name. */ | |
1069 | if ( | |
1070 | /* Detect MSDOS file names with drive specifiers. */ | |
1071 | ! (IS_DRIVE (newdir[0]) | |
1072 | && IS_DEVICE_SEP (newdir[1]) && IS_DIRECTORY_SEP (newdir[2])) | |
1073 | #ifdef WINDOWSNT | |
1074 | /* Detect Windows file names in UNC format. */ | |
1075 | && ! (IS_DIRECTORY_SEP (newdir[0]) && IS_DIRECTORY_SEP (newdir[1])) | |
1076 | #endif | |
1077 | ) | |
1078 | { | |
1079 | /* Effectively, let newdir be (expand-file-name newdir cwd). | |
1080 | Because of the admonition against calling expand-file-name | |
1081 | when we have pointers into lisp strings, we accomplish this | |
1082 | indirectly by prepending newdir to nm if necessary, and using | |
1083 | cwd (or the wd of newdir's drive) as the new newdir. */ | |
2893f146 | 1084 | char *adir; |
c70a4df6 | 1085 | if (IS_DRIVE (newdir[0]) && IS_DEVICE_SEP (newdir[1])) |
199607e4 | 1086 | { |
5976c3fe | 1087 | drive = (unsigned char) newdir[0]; |
199607e4 RS |
1088 | newdir += 2; |
1089 | } | |
1090 | if (!IS_DIRECTORY_SEP (nm[0])) | |
1091 | { | |
1092 | char * tmp = alloca (strlen (newdir) + strlen (nm) + 2); | |
1093 | file_name_as_directory (tmp, newdir); | |
1094 | strcat (tmp, nm); | |
1095 | nm = tmp; | |
1096 | } | |
2893f146 | 1097 | adir = alloca (MAXPATHLEN + 1); |
199607e4 RS |
1098 | if (drive) |
1099 | { | |
2893f146 | 1100 | if (!getdefdir (toupper (drive) - 'A' + 1, adir)) |
199607e4 RS |
1101 | newdir = "/"; |
1102 | } | |
1103 | else | |
2893f146 PE |
1104 | getwd (adir); |
1105 | newdir = adir; | |
199607e4 RS |
1106 | } |
1107 | ||
1108 | /* Strip off drive name from prefix, if present. */ | |
c70a4df6 | 1109 | if (IS_DRIVE (newdir[0]) && IS_DEVICE_SEP (newdir[1])) |
199607e4 RS |
1110 | { |
1111 | drive = newdir[0]; | |
1112 | newdir += 2; | |
1113 | } | |
1114 | ||
1115 | /* Keep only a prefix from newdir if nm starts with slash | |
82330e7f | 1116 | (//server/share for UNC, nothing otherwise). */ |
9a1dc3be | 1117 | if (IS_DIRECTORY_SEP (nm[0]) && collapse_newdir) |
199607e4 RS |
1118 | { |
1119 | #ifdef WINDOWSNT | |
1120 | if (IS_DIRECTORY_SEP (newdir[0]) && IS_DIRECTORY_SEP (newdir[1])) | |
1121 | { | |
2893f146 PE |
1122 | char *adir = strcpy (alloca (strlen (newdir) + 1), newdir); |
1123 | char *p = adir + 2; | |
199607e4 RS |
1124 | while (*p && !IS_DIRECTORY_SEP (*p)) p++; |
1125 | p++; | |
1126 | while (*p && !IS_DIRECTORY_SEP (*p)) p++; | |
1127 | *p = 0; | |
2893f146 | 1128 | newdir = adir; |
199607e4 RS |
1129 | } |
1130 | else | |
1131 | #endif | |
1132 | newdir = ""; | |
1133 | } | |
1134 | } | |
5e570b75 | 1135 | #endif /* DOS_NT */ |
199607e4 RS |
1136 | |
1137 | if (newdir) | |
bfb61299 | 1138 | { |
57676091 | 1139 | /* Get rid of any slash at the end of newdir, unless newdir is |
f0f95d31 | 1140 | just / or // (an incomplete UNC name). */ |
199607e4 | 1141 | length = strlen (newdir); |
f0f95d31 | 1142 | if (length > 1 && IS_DIRECTORY_SEP (newdir[length - 1]) |
57676091 RS |
1143 | #ifdef WINDOWSNT |
1144 | && !(length == 2 && IS_DIRECTORY_SEP (newdir[0])) | |
1145 | #endif | |
1146 | ) | |
bfb61299 | 1147 | { |
5976c3fe | 1148 | char *temp = (char *) alloca (length); |
72af86bd | 1149 | memcpy (temp, newdir, length - 1); |
bfb61299 JB |
1150 | temp[length - 1] = 0; |
1151 | newdir = temp; | |
1152 | } | |
1153 | tlen = length + 1; | |
1154 | } | |
1155 | else | |
1156 | tlen = 0; | |
570d7624 | 1157 | |
bfb61299 JB |
1158 | /* Now concatenate the directory and name to new space in the stack frame */ |
1159 | tlen += strlen (nm) + 1; | |
5e570b75 | 1160 | #ifdef DOS_NT |
f0f95d31 RS |
1161 | /* Reserve space for drive specifier and escape prefix, since either |
1162 | or both may need to be inserted. (The Microsoft x86 compiler | |
5e570b75 | 1163 | produces incorrect code if the following two lines are combined.) */ |
5976c3fe | 1164 | target = (char *) alloca (tlen + 4); |
f0f95d31 | 1165 | target += 4; |
5e570b75 | 1166 | #else /* not DOS_NT */ |
5976c3fe | 1167 | target = (char *) alloca (tlen); |
5e570b75 | 1168 | #endif /* not DOS_NT */ |
570d7624 JB |
1169 | *target = 0; |
1170 | ||
1171 | if (newdir) | |
1172 | { | |
5e570b75 | 1173 | if (nm[0] == 0 || IS_DIRECTORY_SEP (nm[0])) |
f5321b5c | 1174 | { |
3ea2d8b2 | 1175 | #ifdef DOS_NT |
f5321b5c RS |
1176 | /* If newdir is effectively "C:/", then the drive letter will have |
1177 | been stripped and newdir will be "/". Concatenating with an | |
1178 | absolute directory in nm produces "//", which will then be | |
1179 | incorrectly treated as a network share. Ignore newdir in | |
1180 | this case (keeping the drive letter). */ | |
efdc16c9 | 1181 | if (!(drive && nm[0] && IS_DIRECTORY_SEP (newdir[0]) |
f5321b5c RS |
1182 | && newdir[1] == '\0')) |
1183 | #endif | |
1184 | strcpy (target, newdir); | |
1185 | } | |
570d7624 | 1186 | else |
c77d647e | 1187 | file_name_as_directory (target, newdir); |
570d7624 JB |
1188 | } |
1189 | ||
1190 | strcat (target, nm); | |
199607e4 | 1191 | |
214378ec GM |
1192 | /* Now canonicalize by removing `//', `/.' and `/foo/..' if they |
1193 | appear. */ | |
5b5a2ea1 | 1194 | { |
5976c3fe PE |
1195 | char *p = target; |
1196 | char *o = target; | |
570d7624 | 1197 | |
5b5a2ea1 SM |
1198 | while (*p) |
1199 | { | |
5b5a2ea1 SM |
1200 | if (!IS_DIRECTORY_SEP (*p)) |
1201 | { | |
1202 | *o++ = *p++; | |
1203 | } | |
1204 | else if (p[1] == '.' | |
1205 | && (IS_DIRECTORY_SEP (p[2]) | |
1206 | || p[2] == 0)) | |
1207 | { | |
1208 | /* If "/." is the entire filename, keep the "/". Otherwise, | |
1209 | just delete the whole "/.". */ | |
1210 | if (o == target && p[2] == '\0') | |
1211 | *o++ = *p; | |
1212 | p += 2; | |
1213 | } | |
1214 | else if (p[1] == '.' && p[2] == '.' | |
1215 | /* `/../' is the "superroot" on certain file systems. | |
1216 | Turned off on DOS_NT systems because they have no | |
1217 | "superroot" and because this causes us to produce | |
1218 | file names like "d:/../foo" which fail file-related | |
1219 | functions of the underlying OS. (To reproduce, try a | |
1220 | long series of "../../" in default_directory, longer | |
1221 | than the number of levels from the root.) */ | |
aa4060b9 | 1222 | #ifndef DOS_NT |
5b5a2ea1 | 1223 | && o != target |
aa4060b9 | 1224 | #endif |
5b5a2ea1 SM |
1225 | && (IS_DIRECTORY_SEP (p[3]) || p[3] == 0)) |
1226 | { | |
972ed246 | 1227 | #ifdef WINDOWSNT |
5976c3fe | 1228 | char *prev_o = o; |
972ed246 | 1229 | #endif |
5b5a2ea1 SM |
1230 | while (o != target && (--o) && !IS_DIRECTORY_SEP (*o)) |
1231 | ; | |
972ed246 JR |
1232 | #ifdef WINDOWSNT |
1233 | /* Don't go below server level in UNC filenames. */ | |
1234 | if (o == target + 1 && IS_DIRECTORY_SEP (*o) | |
1235 | && IS_DIRECTORY_SEP (*target)) | |
1236 | o = prev_o; | |
1237 | else | |
1238 | #endif | |
5b5a2ea1 SM |
1239 | /* Keep initial / only if this is the whole name. */ |
1240 | if (o == target && IS_ANY_SEP (*o) && p[3] == 0) | |
1241 | ++o; | |
1242 | p += 3; | |
1243 | } | |
1244 | else if (p > target && IS_DIRECTORY_SEP (p[1])) | |
1245 | /* Collapse multiple `/' in a row. */ | |
1246 | p++; | |
1247 | else | |
1248 | { | |
1249 | *o++ = *p++; | |
1250 | } | |
5b5a2ea1 | 1251 | } |
570d7624 | 1252 | |
5e570b75 | 1253 | #ifdef DOS_NT |
5b5a2ea1 | 1254 | /* At last, set drive name. */ |
5e570b75 | 1255 | #ifdef WINDOWSNT |
5b5a2ea1 SM |
1256 | /* Except for network file name. */ |
1257 | if (!(IS_DIRECTORY_SEP (target[0]) && IS_DIRECTORY_SEP (target[1]))) | |
5e570b75 | 1258 | #endif /* WINDOWSNT */ |
5b5a2ea1 SM |
1259 | { |
1260 | if (!drive) abort (); | |
1261 | target -= 2; | |
1262 | target[0] = DRIVE_LETTER (drive); | |
1263 | target[1] = ':'; | |
1264 | } | |
1265 | /* Reinsert the escape prefix if required. */ | |
1266 | if (is_escaped) | |
1267 | { | |
1268 | target -= 2; | |
1269 | target[0] = '/'; | |
1270 | target[1] = ':'; | |
1271 | } | |
087fc47a | 1272 | dostounix_filename (target); |
5e570b75 | 1273 | #endif /* DOS_NT */ |
4c3c22f3 | 1274 | |
5b5a2ea1 SM |
1275 | result = make_specified_string (target, -1, o - target, multibyte); |
1276 | } | |
beb402de KG |
1277 | |
1278 | /* Again look to see if the file name has special constructs in it | |
1279 | and perhaps call the corresponding file handler. This is needed | |
1280 | for filenames such as "/foo/../user@host:/bar/../baz". Expanding | |
1281 | the ".." component gives us "/user@host:/bar/../baz" which needs | |
1282 | to be expanded again. */ | |
1283 | handler = Ffind_file_name_handler (result, Qexpand_file_name); | |
1284 | if (!NILP (handler)) | |
1285 | return call3 (handler, Qexpand_file_name, result, default_directory); | |
1286 | ||
1287 | return result; | |
570d7624 | 1288 | } |
5e570b75 | 1289 | |
4887597a EZ |
1290 | #if 0 |
1291 | /* PLEASE DO NOT DELETE THIS COMMENTED-OUT VERSION! | |
1292 | This is the old version of expand-file-name, before it was thoroughly | |
1293 | rewritten for Emacs 10.31. We leave this version here commented-out, | |
1294 | because the code is very complex and likely to have subtle bugs. If | |
1295 | bugs _are_ found, it might be of interest to look at the old code and | |
1296 | see what did it do in the relevant situation. | |
1297 | ||
30f50381 GM |
1298 | Don't remove this code: it's true that it will be accessible |
1299 | from the repository, but a few years from deletion, people will | |
1300 | forget it is there. */ | |
4887597a EZ |
1301 | |
1302 | /* Changed this DEFUN to a DEAFUN, so as not to confuse `make-docfile'. */ | |
1303 | DEAFUN ("expand-file-name", Fexpand_file_name, Sexpand_file_name, 1, 2, 0, | |
1304 | "Convert FILENAME to absolute, and canonicalize it.\n\ | |
1305 | Second arg DEFAULT is directory to start with if FILENAME is relative\n\ | |
c70a4df6 | 1306 | \(does not start with slash); if DEFAULT is nil or missing,\n\ |
4887597a EZ |
1307 | the current buffer's value of default-directory is used.\n\ |
1308 | Filenames containing `.' or `..' as components are simplified;\n\ | |
1309 | initial `~/' expands to your home directory.\n\ | |
1310 | See also the function `substitute-in-file-name'.") | |
1311 | (name, defalt) | |
1312 | Lisp_Object name, defalt; | |
1313 | { | |
1314 | unsigned char *nm; | |
1315 | ||
1316 | register unsigned char *newdir, *p, *o; | |
1317 | int tlen; | |
1318 | unsigned char *target; | |
1319 | struct passwd *pw; | |
1320 | int lose; | |
4887597a | 1321 | |
b7826503 | 1322 | CHECK_STRING (name); |
d5db4077 | 1323 | nm = SDATA (name); |
4887597a EZ |
1324 | |
1325 | /* If nm is absolute, flush ...// and detect /./ and /../. | |
1326 | If no /./ or /../ we can return right away. */ | |
7c2fb837 | 1327 | if (nm[0] == '/') |
4887597a EZ |
1328 | { |
1329 | p = nm; | |
1330 | lose = 0; | |
1331 | while (*p) | |
1332 | { | |
1333 | if (p[0] == '/' && p[1] == '/' | |
4887597a EZ |
1334 | ) |
1335 | nm = p + 1; | |
1336 | if (p[0] == '/' && p[1] == '~') | |
1337 | nm = p + 1, lose = 1; | |
1338 | if (p[0] == '/' && p[1] == '.' | |
1339 | && (p[2] == '/' || p[2] == 0 | |
1340 | || (p[2] == '.' && (p[3] == '/' || p[3] == 0)))) | |
1341 | lose = 1; | |
4887597a EZ |
1342 | p++; |
1343 | } | |
1344 | if (!lose) | |
1345 | { | |
d5db4077 | 1346 | if (nm == SDATA (name)) |
4887597a EZ |
1347 | return name; |
1348 | return build_string (nm); | |
1349 | } | |
1350 | } | |
1351 | ||
1352 | /* Now determine directory to start with and put it in NEWDIR */ | |
1353 | ||
1354 | newdir = 0; | |
1355 | ||
1356 | if (nm[0] == '~') /* prefix ~ */ | |
7c2fb837 | 1357 | if (nm[1] == '/' || nm[1] == 0)/* ~/filename */ |
4887597a EZ |
1358 | { |
1359 | if (!(newdir = (unsigned char *) egetenv ("HOME"))) | |
1360 | newdir = (unsigned char *) ""; | |
1361 | nm++; | |
4887597a EZ |
1362 | } |
1363 | else /* ~user/filename */ | |
1364 | { | |
1365 | /* Get past ~ to user */ | |
1366 | unsigned char *user = nm + 1; | |
1367 | /* Find end of name. */ | |
8966b757 | 1368 | unsigned char *ptr = (unsigned char *) strchr (user, '/'); |
4887597a | 1369 | int len = ptr ? ptr - user : strlen (user); |
4887597a EZ |
1370 | /* Copy the user name into temp storage. */ |
1371 | o = (unsigned char *) alloca (len + 1); | |
72af86bd | 1372 | memcpy (o, user, len); |
4887597a EZ |
1373 | o[len] = 0; |
1374 | ||
1375 | /* Look up the user name. */ | |
67c08d6c | 1376 | BLOCK_INPUT; |
4887597a | 1377 | pw = (struct passwd *) getpwnam (o + 1); |
67c08d6c | 1378 | UNBLOCK_INPUT; |
4887597a EZ |
1379 | if (!pw) |
1380 | error ("\"%s\" isn't a registered user", o + 1); | |
1381 | ||
1382 | newdir = (unsigned char *) pw->pw_dir; | |
1383 | ||
1384 | /* Discard the user name from NM. */ | |
1385 | nm += len; | |
1386 | } | |
1387 | ||
7c2fb837 | 1388 | if (nm[0] != '/' && !newdir) |
4887597a EZ |
1389 | { |
1390 | if (NILP (defalt)) | |
1391 | defalt = current_buffer->directory; | |
b7826503 | 1392 | CHECK_STRING (defalt); |
d5db4077 | 1393 | newdir = SDATA (defalt); |
4887597a EZ |
1394 | } |
1395 | ||
1396 | /* Now concatenate the directory and name to new space in the stack frame */ | |
1397 | ||
1398 | tlen = (newdir ? strlen (newdir) + 1 : 0) + strlen (nm) + 1; | |
1399 | target = (unsigned char *) alloca (tlen); | |
1400 | *target = 0; | |
1401 | ||
1402 | if (newdir) | |
1403 | { | |
4887597a EZ |
1404 | if (nm[0] == 0 || nm[0] == '/') |
1405 | strcpy (target, newdir); | |
1406 | else | |
4887597a EZ |
1407 | file_name_as_directory (target, newdir); |
1408 | } | |
1409 | ||
1410 | strcat (target, nm); | |
4887597a EZ |
1411 | |
1412 | /* Now canonicalize by removing /. and /foo/.. if they appear */ | |
1413 | ||
1414 | p = target; | |
1415 | o = target; | |
1416 | ||
1417 | while (*p) | |
1418 | { | |
4887597a EZ |
1419 | if (*p != '/') |
1420 | { | |
1421 | *o++ = *p++; | |
1422 | } | |
1423 | else if (!strncmp (p, "//", 2) | |
4887597a EZ |
1424 | ) |
1425 | { | |
1426 | o = target; | |
1427 | p++; | |
1428 | } | |
994a7262 RS |
1429 | else if (p[0] == '/' && p[1] == '.' |
1430 | && (p[2] == '/' || p[2] == 0)) | |
4887597a EZ |
1431 | p += 2; |
1432 | else if (!strncmp (p, "/..", 3) | |
1433 | /* `/../' is the "superroot" on certain file systems. */ | |
1434 | && o != target | |
1435 | && (p[3] == '/' || p[3] == 0)) | |
1436 | { | |
1437 | while (o != target && *--o != '/') | |
1438 | ; | |
4887597a EZ |
1439 | if (o == target && *o == '/') |
1440 | ++o; | |
1441 | p += 3; | |
1442 | } | |
1443 | else | |
1444 | { | |
1445 | *o++ = *p++; | |
1446 | } | |
4887597a EZ |
1447 | } |
1448 | ||
1449 | return make_string (target, o - target); | |
1450 | } | |
1451 | #endif | |
570d7624 | 1452 | \f |
c70a4df6 SM |
1453 | /* If /~ or // appears, discard everything through first slash. */ |
1454 | static int | |
5976c3fe | 1455 | file_name_absolute_p (const char *filename) |
c70a4df6 SM |
1456 | { |
1457 | return | |
1458 | (IS_DIRECTORY_SEP (*filename) || *filename == '~' | |
c70a4df6 SM |
1459 | #ifdef DOS_NT |
1460 | || (IS_DRIVE (*filename) && IS_DEVICE_SEP (filename[1]) | |
1461 | && IS_DIRECTORY_SEP (filename[2])) | |
1462 | #endif | |
1463 | ); | |
1464 | } | |
1465 | ||
5976c3fe PE |
1466 | static char * |
1467 | search_embedded_absfilename (char *nm, char *endp) | |
c70a4df6 | 1468 | { |
5976c3fe | 1469 | char *p, *s; |
c70a4df6 SM |
1470 | |
1471 | for (p = nm + 1; p < endp; p++) | |
1472 | { | |
1473 | if ((0 | |
c70a4df6 SM |
1474 | || IS_DIRECTORY_SEP (p[-1])) |
1475 | && file_name_absolute_p (p) | |
e39a993c | 1476 | #if defined (WINDOWSNT) || defined(CYGWIN) |
c70a4df6 SM |
1477 | /* // at start of file name is meaningful in Apollo, |
1478 | WindowsNT and Cygwin systems. */ | |
f34574c6 | 1479 | && !(IS_DIRECTORY_SEP (p[0]) && p - 1 == nm) |
e39a993c | 1480 | #endif /* not (WINDOWSNT || CYGWIN) */ |
c70a4df6 SM |
1481 | ) |
1482 | { | |
7c2fb837 | 1483 | for (s = p; *s && (!IS_DIRECTORY_SEP (*s)); s++); |
c70a4df6 SM |
1484 | if (p[0] == '~' && s > p + 1) /* we've got "/~something/" */ |
1485 | { | |
5976c3fe | 1486 | char *o = alloca (s - p + 1); |
c70a4df6 | 1487 | struct passwd *pw; |
72af86bd | 1488 | memcpy (o, p, s - p); |
c70a4df6 SM |
1489 | o [s - p] = 0; |
1490 | ||
1491 | /* If we have ~user and `user' exists, discard | |
1492 | everything up to ~. But if `user' does not exist, leave | |
1493 | ~user alone, it might be a literal file name. */ | |
67c08d6c YM |
1494 | BLOCK_INPUT; |
1495 | pw = getpwnam (o + 1); | |
1496 | UNBLOCK_INPUT; | |
1497 | if (pw) | |
c70a4df6 | 1498 | return p; |
c70a4df6 SM |
1499 | } |
1500 | else | |
1501 | return p; | |
1502 | } | |
1503 | } | |
1504 | return NULL; | |
1505 | } | |
1506 | ||
a7ca3326 | 1507 | DEFUN ("substitute-in-file-name", Fsubstitute_in_file_name, |
8c1a1077 PJ |
1508 | Ssubstitute_in_file_name, 1, 1, 0, |
1509 | doc: /* Substitute environment variables referred to in FILENAME. | |
1510 | `$FOO' where FOO is an environment variable name means to substitute | |
1511 | the value of that variable. The variable name should be terminated | |
1512 | with a character not a letter, digit or underscore; otherwise, enclose | |
1513 | the entire variable name in braces. | |
c68845e0 GM |
1514 | |
1515 | If `/~' appears, all of FILENAME through that `/' is discarded. | |
1516 | If `//' appears, everything up to and including the first of | |
1517 | those `/' is discarded. */) | |
5842a27b | 1518 | (Lisp_Object filename) |
570d7624 | 1519 | { |
5976c3fe | 1520 | char *nm; |
570d7624 | 1521 | |
5976c3fe PE |
1522 | register char *s, *p, *o, *x, *endp; |
1523 | char *target = NULL; | |
570d7624 JB |
1524 | int total = 0; |
1525 | int substituted = 0; | |
58aec0d6 | 1526 | int multibyte; |
5976c3fe | 1527 | char *xnm; |
8ce069f5 | 1528 | Lisp_Object handler; |
570d7624 | 1529 | |
b7826503 | 1530 | CHECK_STRING (filename); |
570d7624 | 1531 | |
58aec0d6 JR |
1532 | multibyte = STRING_MULTIBYTE (filename); |
1533 | ||
8ce069f5 RS |
1534 | /* If the file name has special constructs in it, |
1535 | call the corresponding file handler. */ | |
3b7f6e60 | 1536 | handler = Ffind_file_name_handler (filename, Qsubstitute_in_file_name); |
8ce069f5 | 1537 | if (!NILP (handler)) |
3b7f6e60 | 1538 | return call2 (handler, Qsubstitute_in_file_name, filename); |
8ce069f5 | 1539 | |
58aec0d6 JR |
1540 | /* Always work on a copy of the string, in case GC happens during |
1541 | decode of environment variables, causing the original Lisp_String | |
1542 | data to be relocated. */ | |
5976c3fe | 1543 | nm = (char *) alloca (SBYTES (filename) + 1); |
72af86bd | 1544 | memcpy (nm, SDATA (filename), SBYTES (filename) + 1); |
0f3f018c | 1545 | |
58aec0d6 | 1546 | #ifdef DOS_NT |
087fc47a | 1547 | dostounix_filename (nm); |
d5db4077 | 1548 | substituted = (strcmp (nm, SDATA (filename)) != 0); |
a5a1cc06 | 1549 | #endif |
d5db4077 | 1550 | endp = nm + SBYTES (filename); |
570d7624 | 1551 | |
82330e7f | 1552 | /* If /~ or // appears, discard everything through first slash. */ |
c70a4df6 SM |
1553 | p = search_embedded_absfilename (nm, endp); |
1554 | if (p) | |
1555 | /* Start over with the new string, so we check the file-name-handler | |
1556 | again. Important with filenames like "/home/foo//:/hello///there" | |
1557 | which whould substitute to "/:/hello///there" rather than "/there". */ | |
1558 | return Fsubstitute_in_file_name | |
58aec0d6 | 1559 | (make_specified_string (p, -1, endp - p, multibyte)); |
570d7624 JB |
1560 | |
1561 | /* See if any variables are substituted into the string | |
1562 | and find the total length of their values in `total' */ | |
1563 | ||
1564 | for (p = nm; p != endp;) | |
1565 | if (*p != '$') | |
1566 | p++; | |
1567 | else | |
1568 | { | |
1569 | p++; | |
1570 | if (p == endp) | |
1571 | goto badsubst; | |
1572 | else if (*p == '$') | |
1573 | { | |
1574 | /* "$$" means a single "$" */ | |
1575 | p++; | |
1576 | total -= 1; | |
1577 | substituted = 1; | |
1578 | continue; | |
1579 | } | |
1580 | else if (*p == '{') | |
1581 | { | |
1582 | o = ++p; | |
1583 | while (p != endp && *p != '}') p++; | |
1584 | if (*p != '}') goto missingclose; | |
1585 | s = p; | |
1586 | } | |
1587 | else | |
1588 | { | |
1589 | o = p; | |
1590 | while (p != endp && (isalnum (*p) || *p == '_')) p++; | |
1591 | s = p; | |
1592 | } | |
1593 | ||
1594 | /* Copy out the variable name */ | |
5976c3fe | 1595 | target = (char *) alloca (s - o + 1); |
570d7624 JB |
1596 | strncpy (target, o, s - o); |
1597 | target[s - o] = 0; | |
5e570b75 | 1598 | #ifdef DOS_NT |
4c3c22f3 | 1599 | strupr (target); /* $home == $HOME etc. */ |
5e570b75 | 1600 | #endif /* DOS_NT */ |
570d7624 JB |
1601 | |
1602 | /* Get variable value */ | |
5976c3fe | 1603 | o = egetenv (target); |
8d2ced53 | 1604 | if (o) |
58aec0d6 JR |
1605 | { |
1606 | /* Don't try to guess a maximum length - UTF8 can use up to | |
1607 | four bytes per character. This code is unlikely to run | |
1608 | in a situation that requires performance, so decoding the | |
1609 | env variables twice should be acceptable. Note that | |
1610 | decoding may cause a garbage collect. */ | |
1611 | Lisp_Object orig, decoded; | |
1612 | orig = make_unibyte_string (o, strlen (o)); | |
1613 | decoded = DECODE_FILE (orig); | |
1614 | total += SBYTES (decoded); | |
8d2ced53 SM |
1615 | substituted = 1; |
1616 | } | |
1617 | else if (*p == '}') | |
1618 | goto badvar; | |
570d7624 JB |
1619 | } |
1620 | ||
1621 | if (!substituted) | |
3b7f6e60 | 1622 | return filename; |
570d7624 JB |
1623 | |
1624 | /* If substitution required, recopy the string and do it */ | |
1625 | /* Make space in stack frame for the new copy */ | |
5976c3fe | 1626 | xnm = (char *) alloca (SBYTES (filename) + total + 1); |
570d7624 JB |
1627 | x = xnm; |
1628 | ||
1629 | /* Copy the rest of the name through, replacing $ constructs with values */ | |
1630 | for (p = nm; *p;) | |
1631 | if (*p != '$') | |
1632 | *x++ = *p++; | |
1633 | else | |
1634 | { | |
1635 | p++; | |
1636 | if (p == endp) | |
1637 | goto badsubst; | |
1638 | else if (*p == '$') | |
1639 | { | |
1640 | *x++ = *p++; | |
1641 | continue; | |
1642 | } | |
1643 | else if (*p == '{') | |
1644 | { | |
1645 | o = ++p; | |
1646 | while (p != endp && *p != '}') p++; | |
1647 | if (*p != '}') goto missingclose; | |
1648 | s = p++; | |
1649 | } | |
1650 | else | |
1651 | { | |
1652 | o = p; | |
1653 | while (p != endp && (isalnum (*p) || *p == '_')) p++; | |
1654 | s = p; | |
1655 | } | |
1656 | ||
1657 | /* Copy out the variable name */ | |
5976c3fe | 1658 | target = (char *) alloca (s - o + 1); |
570d7624 JB |
1659 | strncpy (target, o, s - o); |
1660 | target[s - o] = 0; | |
5e570b75 | 1661 | #ifdef DOS_NT |
4c3c22f3 | 1662 | strupr (target); /* $home == $HOME etc. */ |
5e570b75 | 1663 | #endif /* DOS_NT */ |
570d7624 JB |
1664 | |
1665 | /* Get variable value */ | |
5976c3fe | 1666 | o = egetenv (target); |
570d7624 | 1667 | if (!o) |
8d2ced53 SM |
1668 | { |
1669 | *x++ = '$'; | |
1670 | strcpy (x, target); x+= strlen (target); | |
1671 | } | |
60d67b83 RS |
1672 | else |
1673 | { | |
58aec0d6 JR |
1674 | Lisp_Object orig, decoded; |
1675 | int orig_length, decoded_length; | |
1676 | orig_length = strlen (o); | |
1677 | orig = make_unibyte_string (o, orig_length); | |
1678 | decoded = DECODE_FILE (orig); | |
1679 | decoded_length = SBYTES (decoded); | |
42a5b22f | 1680 | strncpy (x, SSDATA (decoded), decoded_length); |
58aec0d6 JR |
1681 | x += decoded_length; |
1682 | ||
1683 | /* If environment variable needed decoding, return value | |
1684 | needs to be multibyte. */ | |
1685 | if (decoded_length != orig_length | |
42a5b22f | 1686 | || strncmp (SSDATA (decoded), o, orig_length)) |
58aec0d6 | 1687 | multibyte = 1; |
60d67b83 | 1688 | } |
570d7624 JB |
1689 | } |
1690 | ||
1691 | *x = 0; | |
1692 | ||
82330e7f | 1693 | /* If /~ or // appears, discard everything through first slash. */ |
c70a4df6 SM |
1694 | while ((p = search_embedded_absfilename (xnm, x))) |
1695 | /* This time we do not start over because we've already expanded envvars | |
1696 | and replaced $$ with $. Maybe we should start over as well, but we'd | |
1697 | need to quote some $ to $$ first. */ | |
1698 | xnm = p; | |
570d7624 | 1699 | |
58aec0d6 | 1700 | return make_specified_string (xnm, -1, x - xnm, multibyte); |
570d7624 JB |
1701 | |
1702 | badsubst: | |
1703 | error ("Bad format environment-variable substitution"); | |
1704 | missingclose: | |
1705 | error ("Missing \"}\" in environment-variable substitution"); | |
1706 | badvar: | |
1707 | error ("Substituting nonexistent environment variable \"%s\"", target); | |
1708 | ||
1709 | /* NOTREACHED */ | |
6bbd7a29 | 1710 | return Qnil; |
570d7624 JB |
1711 | } |
1712 | \f | |
067ffa38 | 1713 | /* A slightly faster and more convenient way to get |
298b760e | 1714 | (directory-file-name (expand-file-name FOO)). */ |
067ffa38 | 1715 | |
570d7624 | 1716 | Lisp_Object |
971de7fb | 1717 | expand_and_dir_to_file (Lisp_Object filename, Lisp_Object defdir) |
570d7624 | 1718 | { |
199607e4 | 1719 | register Lisp_Object absname; |
570d7624 | 1720 | |
199607e4 | 1721 | absname = Fexpand_file_name (filename, defdir); |
7c2fb837 | 1722 | |
199607e4 | 1723 | /* Remove final slash, if any (unless this is the root dir). |
570d7624 | 1724 | stat behaves differently depending! */ |
d5db4077 KR |
1725 | if (SCHARS (absname) > 1 |
1726 | && IS_DIRECTORY_SEP (SREF (absname, SBYTES (absname) - 1)) | |
1727 | && !IS_DEVICE_SEP (SREF (absname, SBYTES (absname)-2))) | |
ddc61f46 | 1728 | /* We cannot take shortcuts; they might be wrong for magic file names. */ |
199607e4 | 1729 | absname = Fdirectory_file_name (absname); |
199607e4 | 1730 | return absname; |
570d7624 JB |
1731 | } |
1732 | \f | |
3ed15d97 RS |
1733 | /* Signal an error if the file ABSNAME already exists. |
1734 | If INTERACTIVE is nonzero, ask the user whether to proceed, | |
1735 | and bypass the error if the user says to go ahead. | |
1736 | QUERYSTRING is a name for the action that is being considered | |
1737 | to alter the file. | |
de1d0127 | 1738 | |
3ed15d97 | 1739 | *STATPTR is used to store the stat information if the file exists. |
de1d0127 | 1740 | If the file does not exist, STATPTR->st_mode is set to 0. |
b8b29dc9 RS |
1741 | If STATPTR is null, we don't store into it. |
1742 | ||
1743 | If QUICK is nonzero, we ask for y or n, not yes or no. */ | |
3ed15d97 | 1744 | |
f14b7e14 | 1745 | static void |
5976c3fe PE |
1746 | barf_or_query_if_file_exists (Lisp_Object absname, const char *querystring, |
1747 | int interactive, struct stat *statptr, int quick) | |
570d7624 | 1748 | { |
643c73b9 | 1749 | register Lisp_Object tem, encoded_filename; |
4018b5ef | 1750 | struct stat statbuf; |
570d7624 JB |
1751 | struct gcpro gcpro1; |
1752 | ||
643c73b9 RS |
1753 | encoded_filename = ENCODE_FILE (absname); |
1754 | ||
4018b5ef RS |
1755 | /* stat is a good way to tell whether the file exists, |
1756 | regardless of what access permissions it has. */ | |
42a5b22f | 1757 | if (lstat (SSDATA (encoded_filename), &statbuf) >= 0) |
570d7624 JB |
1758 | { |
1759 | if (! interactive) | |
24b1ddad KS |
1760 | xsignal2 (Qfile_already_exists, |
1761 | build_string ("File already exists"), absname); | |
570d7624 | 1762 | GCPRO1 (absname); |
67e8e2b8 RS |
1763 | tem = format2 ("File %s already exists; %s anyway? ", |
1764 | absname, build_string (querystring)); | |
b8b29dc9 | 1765 | if (quick) |
5616cc54 | 1766 | tem = call1 (intern ("y-or-n-p"), tem); |
b8b29dc9 RS |
1767 | else |
1768 | tem = do_yes_or_no_p (tem); | |
570d7624 | 1769 | UNGCPRO; |
265a9e55 | 1770 | if (NILP (tem)) |
24b1ddad KS |
1771 | xsignal2 (Qfile_already_exists, |
1772 | build_string ("File already exists"), absname); | |
3ed15d97 RS |
1773 | if (statptr) |
1774 | *statptr = statbuf; | |
1775 | } | |
1776 | else | |
1777 | { | |
1778 | if (statptr) | |
1779 | statptr->st_mode = 0; | |
570d7624 JB |
1780 | } |
1781 | return; | |
1782 | } | |
1783 | ||
574c05e2 | 1784 | DEFUN ("copy-file", Fcopy_file, Scopy_file, 2, 6, |
7c0f6118 | 1785 | "fCopy file: \nGCopy %s to file: \np\nP", |
8c1a1077 PJ |
1786 | doc: /* Copy FILE to NEWNAME. Both args must be strings. |
1787 | If NEWNAME names a directory, copy FILE there. | |
795c20df CY |
1788 | |
1789 | This function always sets the file modes of the output file to match | |
1790 | the input file. | |
1791 | ||
1792 | The optional third argument OK-IF-ALREADY-EXISTS specifies what to do | |
1793 | if file NEWNAME already exists. If OK-IF-ALREADY-EXISTS is nil, we | |
1794 | signal a `file-already-exists' error without overwriting. If | |
1795 | OK-IF-ALREADY-EXISTS is a number, we request confirmation from the user | |
1796 | about overwriting; this is what happens in interactive use with M-x. | |
1797 | Any other value for OK-IF-ALREADY-EXISTS means to overwrite the | |
1798 | existing file. | |
c50f15d0 | 1799 | |
7f08b80e | 1800 | Fourth arg KEEP-TIME non-nil means give the output file the same |
8c1a1077 | 1801 | last-modified time as the old one. (This works on only some systems.) |
c50f15d0 | 1802 | |
7fce7dfe EZ |
1803 | A prefix arg makes KEEP-TIME non-nil. |
1804 | ||
586702ce | 1805 | If PRESERVE-UID-GID is non-nil, we try to transfer the |
574c05e2 KK |
1806 | uid and gid of FILE to NEWNAME. |
1807 | ||
f5783df3 | 1808 | If PRESERVE-SELINUX-CONTEXT is non-nil and SELinux is enabled |
574c05e2 | 1809 | on the system, we copy the SELinux context of FILE to NEWNAME. */) |
5842a27b | 1810 | (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 | 1811 | { |
8a2cbd72 EZ |
1812 | int ifd, ofd; |
1813 | EMACS_INT n; | |
570d7624 | 1814 | char buf[16 * 1024]; |
3ed15d97 | 1815 | struct stat st, out_st; |
32f4334d | 1816 | Lisp_Object handler; |
b1d1b865 | 1817 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; |
aed13378 | 1818 | int count = SPECPDL_INDEX (); |
f73b0ada | 1819 | int input_file_statable_p; |
b1d1b865 | 1820 | Lisp_Object encoded_file, encoded_newname; |
574c05e2 KK |
1821 | #if HAVE_LIBSELINUX |
1822 | security_context_t con; | |
1823 | int fail, conlength = 0; | |
1824 | #endif | |
570d7624 | 1825 | |
b1d1b865 RS |
1826 | encoded_file = encoded_newname = Qnil; |
1827 | GCPRO4 (file, newname, encoded_file, encoded_newname); | |
b7826503 PJ |
1828 | CHECK_STRING (file); |
1829 | CHECK_STRING (newname); | |
b1d1b865 | 1830 | |
a9d14e54 | 1831 | if (!NILP (Ffile_directory_p (newname))) |
6b61353c | 1832 | newname = Fexpand_file_name (Ffile_name_nondirectory (file), newname); |
a9d14e54 GM |
1833 | else |
1834 | newname = Fexpand_file_name (newname, Qnil); | |
1835 | ||
3b7f6e60 | 1836 | file = Fexpand_file_name (file, Qnil); |
32f4334d | 1837 | |
0bf2eed2 | 1838 | /* If the input file name has special constructs in it, |
32f4334d | 1839 | call the corresponding file handler. */ |
3b7f6e60 | 1840 | handler = Ffind_file_name_handler (file, Qcopy_file); |
0bf2eed2 | 1841 | /* Likewise for output file name. */ |
51cf6d37 | 1842 | if (NILP (handler)) |
49307295 | 1843 | handler = Ffind_file_name_handler (newname, Qcopy_file); |
32f4334d | 1844 | if (!NILP (handler)) |
574c05e2 KK |
1845 | RETURN_UNGCPRO (call7 (handler, Qcopy_file, file, newname, |
1846 | ok_if_already_exists, keep_time, preserve_uid_gid, | |
1847 | preserve_selinux_context)); | |
32f4334d | 1848 | |
b1d1b865 RS |
1849 | encoded_file = ENCODE_FILE (file); |
1850 | encoded_newname = ENCODE_FILE (newname); | |
1851 | ||
265a9e55 | 1852 | if (NILP (ok_if_already_exists) |
93c30b5f | 1853 | || INTEGERP (ok_if_already_exists)) |
2f868094 | 1854 | barf_or_query_if_file_exists (newname, "copy to it", |
b8b29dc9 | 1855 | INTEGERP (ok_if_already_exists), &out_st, 0); |
42a5b22f | 1856 | else if (stat (SSDATA (encoded_newname), &out_st) < 0) |
3ed15d97 | 1857 | out_st.st_mode = 0; |
570d7624 | 1858 | |
e8691c59 | 1859 | #ifdef WINDOWSNT |
d5db4077 | 1860 | if (!CopyFile (SDATA (encoded_file), |
efdc16c9 | 1861 | SDATA (encoded_newname), |
e8691c59 GM |
1862 | FALSE)) |
1863 | report_file_error ("Copying file", Fcons (file, Fcons (newname, Qnil))); | |
8b53dc06 JR |
1864 | /* CopyFile retains the timestamp by default. */ |
1865 | else if (NILP (keep_time)) | |
e8691c59 GM |
1866 | { |
1867 | EMACS_TIME now; | |
ad497129 JR |
1868 | DWORD attributes; |
1869 | char * filename; | |
1870 | ||
e8691c59 | 1871 | EMACS_GET_TIME (now); |
d5db4077 | 1872 | filename = SDATA (encoded_newname); |
ad497129 JR |
1873 | |
1874 | /* Ensure file is writable while its modified time is set. */ | |
1875 | attributes = GetFileAttributes (filename); | |
02cca86b | 1876 | SetFileAttributes (filename, attributes & ~FILE_ATTRIBUTE_READONLY); |
ad497129 JR |
1877 | if (set_file_times (filename, now, now)) |
1878 | { | |
1879 | /* Restore original attributes. */ | |
1880 | SetFileAttributes (filename, attributes); | |
24b1ddad KS |
1881 | xsignal2 (Qfile_date_error, |
1882 | build_string ("Cannot set file date"), newname); | |
ad497129 JR |
1883 | } |
1884 | /* Restore original attributes. */ | |
1885 | SetFileAttributes (filename, attributes); | |
e8691c59 GM |
1886 | } |
1887 | #else /* not WINDOWSNT */ | |
13336908 | 1888 | immediate_quit = 1; |
42a5b22f | 1889 | ifd = emacs_open (SSDATA (encoded_file), O_RDONLY, 0); |
13336908 RS |
1890 | immediate_quit = 0; |
1891 | ||
570d7624 | 1892 | if (ifd < 0) |
3b7f6e60 | 1893 | report_file_error ("Opening input file", Fcons (file, Qnil)); |
570d7624 | 1894 | |
b5148e85 RS |
1895 | record_unwind_protect (close_file_unwind, make_number (ifd)); |
1896 | ||
f73b0ada BF |
1897 | /* We can only copy regular files and symbolic links. Other files are not |
1898 | copyable by us. */ | |
1899 | input_file_statable_p = (fstat (ifd, &st) >= 0); | |
1900 | ||
574c05e2 KK |
1901 | #if HAVE_LIBSELINUX |
1902 | if (!NILP (preserve_selinux_context) && is_selinux_enabled ()) | |
1903 | { | |
1904 | conlength = fgetfilecon (ifd, &con); | |
1905 | if (conlength == -1) | |
1906 | report_file_error ("Doing fgetfilecon", Fcons (file, Qnil)); | |
1907 | } | |
1908 | #endif | |
1909 | ||
3ed15d97 RS |
1910 | if (out_st.st_mode != 0 |
1911 | && st.st_dev == out_st.st_dev && st.st_ino == out_st.st_ino) | |
1912 | { | |
1913 | errno = 0; | |
1914 | report_file_error ("Input and output files are the same", | |
3b7f6e60 | 1915 | Fcons (file, Fcons (newname, Qnil))); |
3ed15d97 | 1916 | } |
3ed15d97 | 1917 | |
f73b0ada BF |
1918 | if (input_file_statable_p) |
1919 | { | |
1920 | if (!(S_ISREG (st.st_mode)) && !(S_ISLNK (st.st_mode))) | |
1921 | { | |
1922 | #if defined (EISDIR) | |
1923 | /* Get a better looking error message. */ | |
1924 | errno = EISDIR; | |
1925 | #endif /* EISDIR */ | |
3b7f6e60 | 1926 | report_file_error ("Non-regular file", Fcons (file, Qnil)); |
f73b0ada BF |
1927 | } |
1928 | } | |
f73b0ada | 1929 | |
4c3c22f3 RS |
1930 | #ifdef MSDOS |
1931 | /* System's default file type was set to binary by _fmode in emacs.c. */ | |
c50f15d0 | 1932 | ofd = emacs_open (SDATA (encoded_newname), |
7fce7dfe | 1933 | O_WRONLY | O_TRUNC | O_CREAT |
795c20df | 1934 | | (NILP (ok_if_already_exists) ? O_EXCL : 0), |
c50f15d0 RS |
1935 | S_IREAD | S_IWRITE); |
1936 | #else /* not MSDOS */ | |
42a5b22f | 1937 | ofd = emacs_open (SSDATA (encoded_newname), |
c50f15d0 | 1938 | O_WRONLY | O_TRUNC | O_CREAT |
795c20df | 1939 | | (NILP (ok_if_already_exists) ? O_EXCL : 0), |
c50f15d0 | 1940 | 0666); |
4c3c22f3 | 1941 | #endif /* not MSDOS */ |
570d7624 | 1942 | if (ofd < 0) |
3ed15d97 | 1943 | report_file_error ("Opening output file", Fcons (newname, Qnil)); |
b5148e85 RS |
1944 | |
1945 | record_unwind_protect (close_file_unwind, make_number (ofd)); | |
570d7624 | 1946 | |
b5148e85 RS |
1947 | immediate_quit = 1; |
1948 | QUIT; | |
68c45bf0 PE |
1949 | while ((n = emacs_read (ifd, buf, sizeof buf)) > 0) |
1950 | if (emacs_write (ofd, buf, n) != n) | |
3ed15d97 | 1951 | report_file_error ("I/O error", Fcons (newname, Qnil)); |
b5148e85 | 1952 | immediate_quit = 0; |
570d7624 | 1953 | |
b016179b EZ |
1954 | #ifndef MSDOS |
1955 | /* Preserve the original file modes, and if requested, also its | |
1956 | owner and group. */ | |
586702ce RS |
1957 | if (input_file_statable_p) |
1958 | { | |
81e56e61 PE |
1959 | if (!NILP (preserve_uid_gid) && fchown (ofd, st.st_uid, st.st_gid) != 0) |
1960 | report_file_error ("Doing chown", Fcons (newname, Qnil)); | |
1961 | if (fchmod (ofd, st.st_mode & 07777) != 0) | |
1962 | report_file_error ("Doing chmod", Fcons (newname, Qnil)); | |
586702ce | 1963 | } |
b016179b | 1964 | #endif /* not MSDOS */ |
586702ce | 1965 | |
574c05e2 KK |
1966 | #if HAVE_LIBSELINUX |
1967 | if (conlength > 0) | |
1968 | { | |
1969 | /* Set the modified context back to the file. */ | |
1970 | fail = fsetfilecon (ofd, con); | |
1971 | if (fail) | |
1972 | report_file_error ("Doing fsetfilecon", Fcons (newname, Qnil)); | |
1973 | ||
1974 | freecon (con); | |
1975 | } | |
1976 | #endif | |
1977 | ||
5acac34e | 1978 | /* Closing the output clobbers the file times on some systems. */ |
68c45bf0 | 1979 | if (emacs_close (ofd) < 0) |
5acac34e RS |
1980 | report_file_error ("I/O error", Fcons (newname, Qnil)); |
1981 | ||
f73b0ada | 1982 | if (input_file_statable_p) |
570d7624 | 1983 | { |
8ca6602c | 1984 | if (!NILP (keep_time)) |
570d7624 | 1985 | { |
de5bf5d3 JB |
1986 | EMACS_TIME atime, mtime; |
1987 | EMACS_SET_SECS_USECS (atime, st.st_atime, 0); | |
1988 | EMACS_SET_SECS_USECS (mtime, st.st_mtime, 0); | |
42a5b22f | 1989 | if (set_file_times (SSDATA (encoded_newname), |
b1d1b865 | 1990 | atime, mtime)) |
24b1ddad KS |
1991 | xsignal2 (Qfile_date_error, |
1992 | build_string ("Cannot set file date"), newname); | |
570d7624 | 1993 | } |
570d7624 JB |
1994 | } |
1995 | ||
68c45bf0 | 1996 | emacs_close (ifd); |
b016179b | 1997 | |
ed68db4d | 1998 | #ifdef MSDOS |
b016179b EZ |
1999 | if (input_file_statable_p) |
2000 | { | |
2001 | /* In DJGPP v2.0 and later, fstat usually returns true file mode bits, | |
2002 | and if it can't, it tells so. Otherwise, under MSDOS we usually | |
2003 | get only the READ bit, which will make the copied file read-only, | |
2004 | so it's better not to chmod at all. */ | |
2005 | if ((_djstat_flags & _STFAIL_WRITEBIT) == 0) | |
2006 | chmod (SDATA (encoded_newname), st.st_mode & 07777); | |
2007 | } | |
ed68db4d | 2008 | #endif /* MSDOS */ |
b016179b | 2009 | #endif /* not WINDOWSNT */ |
5acac34e | 2010 | |
b5148e85 RS |
2011 | /* Discard the unwind protects. */ |
2012 | specpdl_ptr = specpdl + count; | |
2013 | ||
570d7624 JB |
2014 | UNGCPRO; |
2015 | return Qnil; | |
2016 | } | |
385b6cc7 | 2017 | \f |
9bbe01fb | 2018 | DEFUN ("make-directory-internal", Fmake_directory_internal, |
353cfc19 | 2019 | Smake_directory_internal, 1, 1, 0, |
8c1a1077 | 2020 | doc: /* Create a new directory named DIRECTORY. */) |
5842a27b | 2021 | (Lisp_Object directory) |
570d7624 | 2022 | { |
5976c3fe | 2023 | const char *dir; |
32f4334d | 2024 | Lisp_Object handler; |
b1d1b865 | 2025 | Lisp_Object encoded_dir; |
570d7624 | 2026 | |
b7826503 | 2027 | CHECK_STRING (directory); |
3b7f6e60 | 2028 | directory = Fexpand_file_name (directory, Qnil); |
32f4334d | 2029 | |
3b7f6e60 | 2030 | handler = Ffind_file_name_handler (directory, Qmake_directory_internal); |
32f4334d | 2031 | if (!NILP (handler)) |
3b7f6e60 | 2032 | return call2 (handler, Qmake_directory_internal, directory); |
9bbe01fb | 2033 | |
b1d1b865 RS |
2034 | encoded_dir = ENCODE_FILE (directory); |
2035 | ||
5976c3fe | 2036 | dir = SSDATA (encoded_dir); |
570d7624 | 2037 | |
5e570b75 RS |
2038 | #ifdef WINDOWSNT |
2039 | if (mkdir (dir) != 0) | |
2040 | #else | |
570d7624 | 2041 | if (mkdir (dir, 0777) != 0) |
5e570b75 | 2042 | #endif |
a9f2aeae | 2043 | report_file_error ("Creating directory", list1 (directory)); |
570d7624 | 2044 | |
32f4334d | 2045 | return Qnil; |
570d7624 JB |
2046 | } |
2047 | ||
9d8f3bd9 MA |
2048 | DEFUN ("delete-directory-internal", Fdelete_directory_internal, |
2049 | Sdelete_directory_internal, 1, 1, 0, | |
efdc16c9 | 2050 | doc: /* Delete the directory named DIRECTORY. Does not follow symlinks. */) |
5842a27b | 2051 | (Lisp_Object directory) |
570d7624 | 2052 | { |
5976c3fe | 2053 | const char *dir; |
b1d1b865 | 2054 | Lisp_Object encoded_dir; |
570d7624 | 2055 | |
b7826503 | 2056 | CHECK_STRING (directory); |
3b7f6e60 | 2057 | directory = Fdirectory_file_name (Fexpand_file_name (directory, Qnil)); |
b1d1b865 | 2058 | encoded_dir = ENCODE_FILE (directory); |
5976c3fe | 2059 | dir = SSDATA (encoded_dir); |
b1d1b865 | 2060 | |
570d7624 | 2061 | if (rmdir (dir) != 0) |
a9f2aeae | 2062 | report_file_error ("Removing directory", list1 (directory)); |
570d7624 JB |
2063 | |
2064 | return Qnil; | |
2065 | } | |
2066 | ||
2e2bbddb | 2067 | DEFUN ("delete-file", Fdelete_file, Sdelete_file, 1, 2, |
f1a5d776 CY |
2068 | "(list (read-file-name \ |
2069 | (if (and delete-by-moving-to-trash (null current-prefix-arg)) \ | |
2070 | \"Move file to trash: \" \"Delete file: \") \ | |
2071 | nil default-directory (confirm-nonexistent-file-or-buffer)) \ | |
2072 | (null current-prefix-arg))", | |
efdc16c9 | 2073 | doc: /* Delete file named FILENAME. If it is a symlink, remove the symlink. |
53967e09 | 2074 | If file has multiple names, it continues to exist with the other names. |
f1a5d776 CY |
2075 | TRASH non-nil means to trash the file instead of deleting, provided |
2076 | `delete-by-moving-to-trash' is non-nil. | |
53967e09 | 2077 | |
f1a5d776 CY |
2078 | When called interactively, TRASH is t if no prefix argument is given. |
2079 | With a prefix argument, TRASH is nil. */) | |
5842a27b | 2080 | (Lisp_Object filename, Lisp_Object trash) |
570d7624 | 2081 | { |
32f4334d | 2082 | Lisp_Object handler; |
b1d1b865 | 2083 | Lisp_Object encoded_file; |
efdc16c9 | 2084 | struct gcpro gcpro1; |
b1d1b865 | 2085 | |
efdc16c9 | 2086 | GCPRO1 (filename); |
b4bd27c5 RS |
2087 | if (!NILP (Ffile_directory_p (filename)) |
2088 | && NILP (Ffile_symlink_p (filename))) | |
24b1ddad KS |
2089 | xsignal2 (Qfile_error, |
2090 | build_string ("Removing old name: is a directory"), | |
2091 | filename); | |
efdc16c9 | 2092 | UNGCPRO; |
570d7624 | 2093 | filename = Fexpand_file_name (filename, Qnil); |
32f4334d | 2094 | |
49307295 | 2095 | handler = Ffind_file_name_handler (filename, Qdelete_file); |
32f4334d | 2096 | if (!NILP (handler)) |
f5783df3 | 2097 | return call3 (handler, Qdelete_file, filename, trash); |
32f4334d | 2098 | |
f1a5d776 | 2099 | if (delete_by_moving_to_trash && !NILP (trash)) |
6cf29fe8 JR |
2100 | return call1 (Qmove_file_to_trash, filename); |
2101 | ||
b1d1b865 RS |
2102 | encoded_file = ENCODE_FILE (filename); |
2103 | ||
42a5b22f | 2104 | if (0 > unlink (SSDATA (encoded_file))) |
a9f2aeae | 2105 | report_file_error ("Removing old name", list1 (filename)); |
8a9b0da9 | 2106 | return Qnil; |
570d7624 JB |
2107 | } |
2108 | ||
385b6cc7 | 2109 | static Lisp_Object |
971de7fb | 2110 | internal_delete_file_1 (Lisp_Object ignore) |
385b6cc7 RS |
2111 | { |
2112 | return Qt; | |
2113 | } | |
2114 | ||
53967e09 | 2115 | /* Delete file FILENAME, returning 1 if successful and 0 if failed. |
f1a5d776 | 2116 | This ignores `delete-by-moving-to-trash'. */ |
385b6cc7 RS |
2117 | |
2118 | int | |
f1a5d776 | 2119 | internal_delete_file (Lisp_Object filename) |
385b6cc7 | 2120 | { |
a3911e8c | 2121 | Lisp_Object tem; |
53967e09 | 2122 | |
f1a5d776 | 2123 | tem = internal_condition_case_2 (Fdelete_file, filename, Qnil, |
a3911e8c KR |
2124 | Qt, internal_delete_file_1); |
2125 | return NILP (tem); | |
385b6cc7 RS |
2126 | } |
2127 | \f | |
570d7624 | 2128 | DEFUN ("rename-file", Frename_file, Srename_file, 2, 3, |
7c0f6118 | 2129 | "fRename file: \nGRename %s to file: \np", |
a4e03fe5 | 2130 | doc: /* Rename FILE as NEWNAME. Both args must be strings. |
8c1a1077 PJ |
2131 | If file has names other than FILE, it continues to have those names. |
2132 | Signals a `file-already-exists' error if a file NEWNAME already exists | |
2133 | unless optional third argument OK-IF-ALREADY-EXISTS is non-nil. | |
2134 | A number as third arg means request confirmation if NEWNAME already exists. | |
2135 | This is what happens in interactive use with M-x. */) | |
5842a27b | 2136 | (Lisp_Object file, Lisp_Object newname, Lisp_Object ok_if_already_exists) |
570d7624 | 2137 | { |
32f4334d | 2138 | Lisp_Object handler; |
f72b5416 JD |
2139 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5; |
2140 | Lisp_Object encoded_file, encoded_newname, symlink_target; | |
570d7624 | 2141 | |
f72b5416 JD |
2142 | symlink_target = encoded_file = encoded_newname = Qnil; |
2143 | GCPRO5 (file, newname, encoded_file, encoded_newname, symlink_target); | |
b7826503 PJ |
2144 | CHECK_STRING (file); |
2145 | CHECK_STRING (newname); | |
3b7f6e60 | 2146 | file = Fexpand_file_name (file, Qnil); |
1ffc5c90 | 2147 | |
f83caf70 EZ |
2148 | if ((!NILP (Ffile_directory_p (newname))) |
2149 | #ifdef DOS_NT | |
2150 | /* If the file names are identical but for the case, | |
2151 | don't attempt to move directory to itself. */ | |
2152 | && (NILP (Fstring_equal (Fdowncase (file), Fdowncase (newname)))) | |
2153 | #endif | |
2154 | ) | |
8719abec CY |
2155 | { |
2156 | Lisp_Object fname = NILP (Ffile_directory_p (file)) | |
2157 | ? file : Fdirectory_file_name (file); | |
2158 | newname = Fexpand_file_name (Ffile_name_nondirectory (fname), newname); | |
2159 | } | |
1ffc5c90 RS |
2160 | else |
2161 | newname = Fexpand_file_name (newname, Qnil); | |
32f4334d RS |
2162 | |
2163 | /* If the file name has special constructs in it, | |
2164 | call the corresponding file handler. */ | |
3b7f6e60 | 2165 | handler = Ffind_file_name_handler (file, Qrename_file); |
51cf6d37 | 2166 | if (NILP (handler)) |
49307295 | 2167 | handler = Ffind_file_name_handler (newname, Qrename_file); |
32f4334d | 2168 | if (!NILP (handler)) |
36712b0a | 2169 | RETURN_UNGCPRO (call4 (handler, Qrename_file, |
3b7f6e60 | 2170 | file, newname, ok_if_already_exists)); |
32f4334d | 2171 | |
b1d1b865 RS |
2172 | encoded_file = ENCODE_FILE (file); |
2173 | encoded_newname = ENCODE_FILE (newname); | |
2174 | ||
bc77278f EZ |
2175 | #ifdef DOS_NT |
2176 | /* If the file names are identical but for the case, don't ask for | |
2177 | confirmation: they simply want to change the letter-case of the | |
2178 | file name. */ | |
2179 | if (NILP (Fstring_equal (Fdowncase (file), Fdowncase (newname)))) | |
2180 | #endif | |
265a9e55 | 2181 | if (NILP (ok_if_already_exists) |
93c30b5f | 2182 | || INTEGERP (ok_if_already_exists)) |
2f868094 | 2183 | barf_or_query_if_file_exists (newname, "rename to it", |
b8b29dc9 | 2184 | INTEGERP (ok_if_already_exists), 0, 0); |
42a5b22f | 2185 | if (0 > rename (SSDATA (encoded_file), SSDATA (encoded_newname))) |
570d7624 JB |
2186 | { |
2187 | if (errno == EXDEV) | |
2188 | { | |
6bddfc97 | 2189 | int count; |
f72b5416 | 2190 | symlink_target = Ffile_symlink_p (file); |
440c7d00 JD |
2191 | if (! NILP (symlink_target)) |
2192 | Fmake_symbolic_link (symlink_target, newname, | |
f59abab9 | 2193 | NILP (ok_if_already_exists) ? Qnil : Qt); |
ae0d7250 | 2194 | else if (!NILP (Ffile_directory_p (file))) |
8719abec CY |
2195 | call4 (Qcopy_directory, file, newname, Qt, Qnil); |
2196 | else | |
2197 | /* We have already prompted if it was an integer, so don't | |
2198 | have copy-file prompt again. */ | |
586702ce | 2199 | Fcopy_file (file, newname, |
586702ce | 2200 | NILP (ok_if_already_exists) ? Qnil : Qt, |
574c05e2 | 2201 | Qt, Qt, Qt); |
d550c425 | 2202 | |
6bddfc97 | 2203 | count = SPECPDL_INDEX (); |
d2b66acf | 2204 | specbind (Qdelete_by_moving_to_trash, Qnil); |
8fab2362 | 2205 | |
ae0d7250 | 2206 | if (!NILP (Ffile_directory_p (file)) && NILP (symlink_target)) |
8719abec CY |
2207 | call2 (Qdelete_directory, file, Qt); |
2208 | else | |
f1a5d776 | 2209 | Fdelete_file (file, Qnil); |
6bddfc97 | 2210 | unbind_to (count, Qnil); |
570d7624 JB |
2211 | } |
2212 | else | |
a9f2aeae | 2213 | report_file_error ("Renaming", list2 (file, newname)); |
570d7624 JB |
2214 | } |
2215 | UNGCPRO; | |
2216 | return Qnil; | |
2217 | } | |
2218 | ||
2219 | DEFUN ("add-name-to-file", Fadd_name_to_file, Sadd_name_to_file, 2, 3, | |
7c0f6118 | 2220 | "fAdd name to file: \nGName to add to %s: \np", |
a4e03fe5 | 2221 | doc: /* Give FILE additional name NEWNAME. Both args must be strings. |
8c1a1077 PJ |
2222 | Signals a `file-already-exists' error if a file NEWNAME already exists |
2223 | unless optional third argument OK-IF-ALREADY-EXISTS is non-nil. | |
2224 | A number as third arg means request confirmation if NEWNAME already exists. | |
2225 | This is what happens in interactive use with M-x. */) | |
5842a27b | 2226 | (Lisp_Object file, Lisp_Object newname, Lisp_Object ok_if_already_exists) |
570d7624 | 2227 | { |
32f4334d | 2228 | Lisp_Object handler; |
b1d1b865 RS |
2229 | Lisp_Object encoded_file, encoded_newname; |
2230 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; | |
570d7624 | 2231 | |
b1d1b865 RS |
2232 | GCPRO4 (file, newname, encoded_file, encoded_newname); |
2233 | encoded_file = encoded_newname = Qnil; | |
b7826503 PJ |
2234 | CHECK_STRING (file); |
2235 | CHECK_STRING (newname); | |
3b7f6e60 | 2236 | file = Fexpand_file_name (file, Qnil); |
1ffc5c90 RS |
2237 | |
2238 | if (!NILP (Ffile_directory_p (newname))) | |
2239 | newname = Fexpand_file_name (Ffile_name_nondirectory (file), newname); | |
2240 | else | |
2241 | newname = Fexpand_file_name (newname, Qnil); | |
32f4334d RS |
2242 | |
2243 | /* If the file name has special constructs in it, | |
2244 | call the corresponding file handler. */ | |
3b7f6e60 | 2245 | handler = Ffind_file_name_handler (file, Qadd_name_to_file); |
32f4334d | 2246 | if (!NILP (handler)) |
3b7f6e60 | 2247 | RETURN_UNGCPRO (call4 (handler, Qadd_name_to_file, file, |
36712b0a | 2248 | newname, ok_if_already_exists)); |
32f4334d | 2249 | |
adc6741c RS |
2250 | /* If the new name has special constructs in it, |
2251 | call the corresponding file handler. */ | |
2252 | handler = Ffind_file_name_handler (newname, Qadd_name_to_file); | |
2253 | if (!NILP (handler)) | |
3b7f6e60 | 2254 | RETURN_UNGCPRO (call4 (handler, Qadd_name_to_file, file, |
adc6741c RS |
2255 | newname, ok_if_already_exists)); |
2256 | ||
b1d1b865 RS |
2257 | encoded_file = ENCODE_FILE (file); |
2258 | encoded_newname = ENCODE_FILE (newname); | |
2259 | ||
265a9e55 | 2260 | if (NILP (ok_if_already_exists) |
93c30b5f | 2261 | || INTEGERP (ok_if_already_exists)) |
2f868094 | 2262 | barf_or_query_if_file_exists (newname, "make it a new name", |
b8b29dc9 | 2263 | INTEGERP (ok_if_already_exists), 0, 0); |
5e570b75 | 2264 | |
42a5b22f PE |
2265 | unlink (SSDATA (newname)); |
2266 | if (0 > link (SSDATA (encoded_file), SSDATA (encoded_newname))) | |
a9f2aeae | 2267 | report_file_error ("Adding new name", list2 (file, newname)); |
570d7624 JB |
2268 | |
2269 | UNGCPRO; | |
2270 | return Qnil; | |
2271 | } | |
2272 | ||
570d7624 | 2273 | DEFUN ("make-symbolic-link", Fmake_symbolic_link, Smake_symbolic_link, 2, 3, |
7c0f6118 | 2274 | "FMake symbolic link to file: \nGMake symbolic link to file %s: \np", |
68780e2a RS |
2275 | doc: /* Make a symbolic link to FILENAME, named LINKNAME. |
2276 | Both args must be strings. | |
8c1a1077 PJ |
2277 | Signals a `file-already-exists' error if a file LINKNAME already exists |
2278 | unless optional third argument OK-IF-ALREADY-EXISTS is non-nil. | |
2279 | A number as third arg means request confirmation if LINKNAME already exists. | |
2280 | This happens for interactive use with M-x. */) | |
5842a27b | 2281 | (Lisp_Object filename, Lisp_Object linkname, Lisp_Object ok_if_already_exists) |
570d7624 | 2282 | { |
32f4334d | 2283 | Lisp_Object handler; |
b1d1b865 RS |
2284 | Lisp_Object encoded_filename, encoded_linkname; |
2285 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; | |
570d7624 | 2286 | |
b1d1b865 RS |
2287 | GCPRO4 (filename, linkname, encoded_filename, encoded_linkname); |
2288 | encoded_filename = encoded_linkname = Qnil; | |
b7826503 PJ |
2289 | CHECK_STRING (filename); |
2290 | CHECK_STRING (linkname); | |
d9bc1c99 RS |
2291 | /* If the link target has a ~, we must expand it to get |
2292 | a truly valid file name. Otherwise, do not expand; | |
2293 | we want to permit links to relative file names. */ | |
d5db4077 | 2294 | if (SREF (filename, 0) == '~') |
d9bc1c99 | 2295 | filename = Fexpand_file_name (filename, Qnil); |
1ffc5c90 RS |
2296 | |
2297 | if (!NILP (Ffile_directory_p (linkname))) | |
dac24db4 | 2298 | linkname = Fexpand_file_name (Ffile_name_nondirectory (filename), linkname); |
1ffc5c90 RS |
2299 | else |
2300 | linkname = Fexpand_file_name (linkname, Qnil); | |
32f4334d RS |
2301 | |
2302 | /* If the file name has special constructs in it, | |
2303 | call the corresponding file handler. */ | |
49307295 | 2304 | handler = Ffind_file_name_handler (filename, Qmake_symbolic_link); |
32f4334d | 2305 | if (!NILP (handler)) |
36712b0a KH |
2306 | RETURN_UNGCPRO (call4 (handler, Qmake_symbolic_link, filename, |
2307 | linkname, ok_if_already_exists)); | |
32f4334d | 2308 | |
adc6741c RS |
2309 | /* If the new link name has special constructs in it, |
2310 | call the corresponding file handler. */ | |
2311 | handler = Ffind_file_name_handler (linkname, Qmake_symbolic_link); | |
2312 | if (!NILP (handler)) | |
2313 | RETURN_UNGCPRO (call4 (handler, Qmake_symbolic_link, filename, | |
2314 | linkname, ok_if_already_exists)); | |
2315 | ||
b1d1b865 RS |
2316 | encoded_filename = ENCODE_FILE (filename); |
2317 | encoded_linkname = ENCODE_FILE (linkname); | |
2318 | ||
265a9e55 | 2319 | if (NILP (ok_if_already_exists) |
93c30b5f | 2320 | || INTEGERP (ok_if_already_exists)) |
2f868094 | 2321 | barf_or_query_if_file_exists (linkname, "make it a link", |
b8b29dc9 | 2322 | INTEGERP (ok_if_already_exists), 0, 0); |
42a5b22f PE |
2323 | if (0 > symlink (SSDATA (encoded_filename), |
2324 | SSDATA (encoded_linkname))) | |
570d7624 JB |
2325 | { |
2326 | /* If we didn't complain already, silently delete existing file. */ | |
2327 | if (errno == EEXIST) | |
2328 | { | |
42a5b22f PE |
2329 | unlink (SSDATA (encoded_linkname)); |
2330 | if (0 <= symlink (SSDATA (encoded_filename), | |
2331 | SSDATA (encoded_linkname))) | |
1a04498e KH |
2332 | { |
2333 | UNGCPRO; | |
2334 | return Qnil; | |
2335 | } | |
570d7624 | 2336 | } |
d9d0d182 PE |
2337 | if (errno == ENOSYS) |
2338 | { | |
2339 | UNGCPRO; | |
2340 | xsignal1 (Qfile_error, | |
2341 | build_string ("Symbolic links are not supported")); | |
2342 | } | |
570d7624 | 2343 | |
a9f2aeae | 2344 | report_file_error ("Making symbolic link", list2 (filename, linkname)); |
570d7624 JB |
2345 | } |
2346 | UNGCPRO; | |
2347 | return Qnil; | |
e89b536d | 2348 | } |
570d7624 | 2349 | |
570d7624 | 2350 | \f |
a7ca3326 | 2351 | DEFUN ("file-name-absolute-p", Ffile_name_absolute_p, Sfile_name_absolute_p, |
570d7624 | 2352 | 1, 1, 0, |
8c1a1077 PJ |
2353 | doc: /* Return t if file FILENAME specifies an absolute file name. |
2354 | On Unix, this is a name starting with a `/' or a `~'. */) | |
5842a27b | 2355 | (Lisp_Object filename) |
570d7624 | 2356 | { |
b7826503 | 2357 | CHECK_STRING (filename); |
5976c3fe | 2358 | return file_name_absolute_p (SSDATA (filename)) ? Qt : Qnil; |
570d7624 | 2359 | } |
3beeedfe RS |
2360 | \f |
2361 | /* Return nonzero if file FILENAME exists and can be executed. */ | |
2362 | ||
2363 | static int | |
971de7fb | 2364 | check_executable (char *filename) |
3beeedfe | 2365 | { |
3be3c08e | 2366 | #ifdef DOS_NT |
3be3c08e RS |
2367 | struct stat st; |
2368 | if (stat (filename, &st) < 0) | |
2369 | return 0; | |
199607e4 | 2370 | return ((st.st_mode & S_IEXEC) != 0); |
3be3c08e | 2371 | #else /* not DOS_NT */ |
de0be7dd RS |
2372 | #ifdef HAVE_EUIDACCESS |
2373 | return (euidaccess (filename, 1) >= 0); | |
3beeedfe RS |
2374 | #else |
2375 | /* Access isn't quite right because it uses the real uid | |
2376 | and we really want to test with the effective uid. | |
2377 | But Unix doesn't give us a right way to do it. */ | |
2378 | return (access (filename, 1) >= 0); | |
2379 | #endif | |
3be3c08e | 2380 | #endif /* not DOS_NT */ |
3beeedfe RS |
2381 | } |
2382 | ||
2383 | /* Return nonzero if file FILENAME exists and can be written. */ | |
2384 | ||
2385 | static int | |
8ea90aa3 | 2386 | check_writable (const char *filename) |
3beeedfe | 2387 | { |
3be3c08e RS |
2388 | #ifdef MSDOS |
2389 | struct stat st; | |
2390 | if (stat (filename, &st) < 0) | |
2391 | return 0; | |
f68c809d | 2392 | return (st.st_mode & S_IWRITE || S_ISDIR (st.st_mode)); |
3be3c08e | 2393 | #else /* not MSDOS */ |
41f3fb38 KH |
2394 | #ifdef HAVE_EUIDACCESS |
2395 | return (euidaccess (filename, 2) >= 0); | |
3beeedfe RS |
2396 | #else |
2397 | /* Access isn't quite right because it uses the real uid | |
2398 | and we really want to test with the effective uid. | |
2399 | But Unix doesn't give us a right way to do it. | |
2400 | Opening with O_WRONLY could work for an ordinary file, | |
2401 | but would lose for directories. */ | |
2402 | return (access (filename, 2) >= 0); | |
2403 | #endif | |
3be3c08e | 2404 | #endif /* not MSDOS */ |
3beeedfe | 2405 | } |
570d7624 | 2406 | |
a7ca3326 | 2407 | DEFUN ("file-exists-p", Ffile_exists_p, Sfile_exists_p, 1, 1, 0, |
68780e2a RS |
2408 | doc: /* Return t if file FILENAME exists (whether or not you can read it.) |
2409 | See also `file-readable-p' and `file-attributes'. | |
2410 | This returns nil for a symlink to a nonexistent file. | |
2411 | Use `file-symlink-p' to test for such links. */) | |
5842a27b | 2412 | (Lisp_Object filename) |
570d7624 | 2413 | { |
199607e4 | 2414 | Lisp_Object absname; |
32f4334d | 2415 | Lisp_Object handler; |
4018b5ef | 2416 | struct stat statbuf; |
570d7624 | 2417 | |
b7826503 | 2418 | CHECK_STRING (filename); |
199607e4 | 2419 | absname = Fexpand_file_name (filename, Qnil); |
32f4334d RS |
2420 | |
2421 | /* If the file name has special constructs in it, | |
2422 | call the corresponding file handler. */ | |
199607e4 | 2423 | handler = Ffind_file_name_handler (absname, Qfile_exists_p); |
32f4334d | 2424 | if (!NILP (handler)) |
199607e4 | 2425 | return call2 (handler, Qfile_exists_p, absname); |
32f4334d | 2426 | |
b1d1b865 RS |
2427 | absname = ENCODE_FILE (absname); |
2428 | ||
42a5b22f | 2429 | return (stat (SSDATA (absname), &statbuf) >= 0) ? Qt : Qnil; |
570d7624 JB |
2430 | } |
2431 | ||
2432 | DEFUN ("file-executable-p", Ffile_executable_p, Sfile_executable_p, 1, 1, 0, | |
8c1a1077 PJ |
2433 | doc: /* Return t if FILENAME can be executed by you. |
2434 | For a directory, this means you can access files in that directory. */) | |
5842a27b | 2435 | (Lisp_Object filename) |
570d7624 | 2436 | { |
199607e4 | 2437 | Lisp_Object absname; |
32f4334d | 2438 | Lisp_Object handler; |
570d7624 | 2439 | |
b7826503 | 2440 | CHECK_STRING (filename); |
199607e4 | 2441 | absname = Fexpand_file_name (filename, Qnil); |
32f4334d RS |
2442 | |
2443 | /* If the file name has special constructs in it, | |
2444 | call the corresponding file handler. */ | |
199607e4 | 2445 | handler = Ffind_file_name_handler (absname, Qfile_executable_p); |
32f4334d | 2446 | if (!NILP (handler)) |
199607e4 | 2447 | return call2 (handler, Qfile_executable_p, absname); |
32f4334d | 2448 | |
b1d1b865 RS |
2449 | absname = ENCODE_FILE (absname); |
2450 | ||
42a5b22f | 2451 | return (check_executable (SSDATA (absname)) ? Qt : Qnil); |
570d7624 JB |
2452 | } |
2453 | ||
a7ca3326 | 2454 | DEFUN ("file-readable-p", Ffile_readable_p, Sfile_readable_p, 1, 1, 0, |
8c1a1077 PJ |
2455 | doc: /* Return t if file FILENAME exists and you can read it. |
2456 | See also `file-exists-p' and `file-attributes'. */) | |
5842a27b | 2457 | (Lisp_Object filename) |
570d7624 | 2458 | { |
199607e4 | 2459 | Lisp_Object absname; |
32f4334d | 2460 | Lisp_Object handler; |
4018b5ef | 2461 | int desc; |
bb369dc6 RS |
2462 | int flags; |
2463 | struct stat statbuf; | |
570d7624 | 2464 | |
b7826503 | 2465 | CHECK_STRING (filename); |
199607e4 | 2466 | absname = Fexpand_file_name (filename, Qnil); |
32f4334d RS |
2467 | |
2468 | /* If the file name has special constructs in it, | |
2469 | call the corresponding file handler. */ | |
199607e4 | 2470 | handler = Ffind_file_name_handler (absname, Qfile_readable_p); |
32f4334d | 2471 | if (!NILP (handler)) |
199607e4 | 2472 | return call2 (handler, Qfile_readable_p, absname); |
32f4334d | 2473 | |
b1d1b865 RS |
2474 | absname = ENCODE_FILE (absname); |
2475 | ||
fb4c6c96 AC |
2476 | #if defined(DOS_NT) || defined(macintosh) |
2477 | /* Under MS-DOS, Windows, and Macintosh, open does not work for | |
2478 | directories. */ | |
d5db4077 | 2479 | if (access (SDATA (absname), 0) == 0) |
a8a7d065 RS |
2480 | return Qt; |
2481 | return Qnil; | |
fb4c6c96 | 2482 | #else /* not DOS_NT and not macintosh */ |
bb369dc6 | 2483 | flags = O_RDONLY; |
ae0d7250 | 2484 | #ifdef O_NONBLOCK |
bb369dc6 RS |
2485 | /* Opening a fifo without O_NONBLOCK can wait. |
2486 | We don't want to wait. But we don't want to mess wth O_NONBLOCK | |
2487 | except in the case of a fifo, on a system which handles it. */ | |
42a5b22f | 2488 | desc = stat (SSDATA (absname), &statbuf); |
bb369dc6 RS |
2489 | if (desc < 0) |
2490 | return Qnil; | |
2491 | if (S_ISFIFO (statbuf.st_mode)) | |
2492 | flags |= O_NONBLOCK; | |
2493 | #endif | |
42a5b22f | 2494 | desc = emacs_open (SSDATA (absname), flags, 0); |
4018b5ef RS |
2495 | if (desc < 0) |
2496 | return Qnil; | |
68c45bf0 | 2497 | emacs_close (desc); |
4018b5ef | 2498 | return Qt; |
fb4c6c96 | 2499 | #endif /* not DOS_NT and not macintosh */ |
570d7624 JB |
2500 | } |
2501 | ||
f793dc6c RS |
2502 | /* Having this before file-symlink-p mysteriously caused it to be forgotten |
2503 | on the RT/PC. */ | |
2504 | DEFUN ("file-writable-p", Ffile_writable_p, Sfile_writable_p, 1, 1, 0, | |
8c1a1077 | 2505 | doc: /* Return t if file FILENAME can be written or created by you. */) |
5842a27b | 2506 | (Lisp_Object filename) |
f793dc6c | 2507 | { |
b1d1b865 | 2508 | Lisp_Object absname, dir, encoded; |
f793dc6c RS |
2509 | Lisp_Object handler; |
2510 | struct stat statbuf; | |
2511 | ||
b7826503 | 2512 | CHECK_STRING (filename); |
199607e4 | 2513 | absname = Fexpand_file_name (filename, Qnil); |
f793dc6c RS |
2514 | |
2515 | /* If the file name has special constructs in it, | |
2516 | call the corresponding file handler. */ | |
199607e4 | 2517 | handler = Ffind_file_name_handler (absname, Qfile_writable_p); |
f793dc6c | 2518 | if (!NILP (handler)) |
199607e4 | 2519 | return call2 (handler, Qfile_writable_p, absname); |
f793dc6c | 2520 | |
b1d1b865 | 2521 | encoded = ENCODE_FILE (absname); |
42a5b22f PE |
2522 | if (stat (SSDATA (encoded), &statbuf) >= 0) |
2523 | return (check_writable (SSDATA (encoded)) | |
f793dc6c | 2524 | ? Qt : Qnil); |
b1d1b865 | 2525 | |
199607e4 | 2526 | dir = Ffile_name_directory (absname); |
f793dc6c RS |
2527 | #ifdef MSDOS |
2528 | if (!NILP (dir)) | |
2529 | dir = Fdirectory_file_name (dir); | |
2530 | #endif /* MSDOS */ | |
b1d1b865 RS |
2531 | |
2532 | dir = ENCODE_FILE (dir); | |
e3e8a75a GM |
2533 | #ifdef WINDOWSNT |
2534 | /* The read-only attribute of the parent directory doesn't affect | |
2535 | whether a file or directory can be created within it. Some day we | |
2536 | should check ACLs though, which do affect this. */ | |
d5db4077 | 2537 | if (stat (SDATA (dir), &statbuf) < 0) |
e3e8a75a | 2538 | return Qnil; |
f68c809d | 2539 | return S_ISDIR (statbuf.st_mode) ? Qt : Qnil; |
e3e8a75a | 2540 | #else |
51b59d79 | 2541 | return (check_writable (!NILP (dir) ? SSDATA (dir) : "") |
f793dc6c | 2542 | ? Qt : Qnil); |
e3e8a75a | 2543 | #endif |
f793dc6c RS |
2544 | } |
2545 | \f | |
1f8653eb | 2546 | DEFUN ("access-file", Faccess_file, Saccess_file, 2, 2, 0, |
8c1a1077 PJ |
2547 | doc: /* Access file FILENAME, and get an error if that does not work. |
2548 | The second argument STRING is used in the error message. | |
a4e03fe5 | 2549 | If there is no error, returns nil. */) |
5842a27b | 2550 | (Lisp_Object filename, Lisp_Object string) |
1f8653eb | 2551 | { |
49475635 | 2552 | Lisp_Object handler, encoded_filename, absname; |
1f8653eb RS |
2553 | int fd; |
2554 | ||
b7826503 | 2555 | CHECK_STRING (filename); |
49475635 EZ |
2556 | absname = Fexpand_file_name (filename, Qnil); |
2557 | ||
b7826503 | 2558 | CHECK_STRING (string); |
1f8653eb RS |
2559 | |
2560 | /* If the file name has special constructs in it, | |
2561 | call the corresponding file handler. */ | |
49475635 | 2562 | handler = Ffind_file_name_handler (absname, Qaccess_file); |
1f8653eb | 2563 | if (!NILP (handler)) |
49475635 | 2564 | return call3 (handler, Qaccess_file, absname, string); |
1f8653eb | 2565 | |
49475635 | 2566 | encoded_filename = ENCODE_FILE (absname); |
b1d1b865 | 2567 | |
42a5b22f | 2568 | fd = emacs_open (SSDATA (encoded_filename), O_RDONLY, 0); |
1f8653eb | 2569 | if (fd < 0) |
42a5b22f | 2570 | report_file_error (SSDATA (string), Fcons (filename, Qnil)); |
68c45bf0 | 2571 | emacs_close (fd); |
1f8653eb RS |
2572 | |
2573 | return Qnil; | |
2574 | } | |
2575 | \f | |
a7ca3326 | 2576 | DEFUN ("file-symlink-p", Ffile_symlink_p, Sfile_symlink_p, 1, 1, 0, |
8c1a1077 | 2577 | doc: /* Return non-nil if file FILENAME is the name of a symbolic link. |
1c353c74 | 2578 | The value is the link target, as a string. |
68780e2a RS |
2579 | Otherwise it returns nil. |
2580 | ||
2581 | This function returns t when given the name of a symlink that | |
2582 | points to a nonexistent file. */) | |
5842a27b | 2583 | (Lisp_Object filename) |
570d7624 | 2584 | { |
32f4334d | 2585 | Lisp_Object handler; |
ae0d7250 | 2586 | char *buf; |
ae0d7250 | 2587 | Lisp_Object val; |
d1fdcab7 | 2588 | char readlink_buf[READLINK_BUFSIZE]; |
570d7624 | 2589 | |
b7826503 | 2590 | CHECK_STRING (filename); |
570d7624 JB |
2591 | filename = Fexpand_file_name (filename, Qnil); |
2592 | ||
32f4334d RS |
2593 | /* If the file name has special constructs in it, |
2594 | call the corresponding file handler. */ | |
49307295 | 2595 | handler = Ffind_file_name_handler (filename, Qfile_symlink_p); |
32f4334d RS |
2596 | if (!NILP (handler)) |
2597 | return call2 (handler, Qfile_symlink_p, filename); | |
2598 | ||
b1d1b865 RS |
2599 | filename = ENCODE_FILE (filename); |
2600 | ||
d1fdcab7 PE |
2601 | buf = emacs_readlink (SSDATA (filename), readlink_buf); |
2602 | if (! buf) | |
2603 | return Qnil; | |
efdc16c9 | 2604 | |
d1fdcab7 | 2605 | val = build_string (buf); |
8966b757 | 2606 | if (buf[0] == '/' && strchr (buf, ':')) |
69ac1891 | 2607 | val = concat2 (build_string ("/:"), val); |
d1fdcab7 PE |
2608 | if (buf != readlink_buf) |
2609 | xfree (buf); | |
cd913586 KH |
2610 | val = DECODE_FILE (val); |
2611 | return val; | |
570d7624 JB |
2612 | } |
2613 | ||
a7ca3326 | 2614 | DEFUN ("file-directory-p", Ffile_directory_p, Sfile_directory_p, 1, 1, 0, |
8c1a1077 PJ |
2615 | doc: /* Return t if FILENAME names an existing directory. |
2616 | Symbolic links to directories count as directories. | |
2617 | See `file-symlink-p' to distinguish symlinks. */) | |
5842a27b | 2618 | (Lisp_Object filename) |
570d7624 | 2619 | { |
199607e4 | 2620 | register Lisp_Object absname; |
570d7624 | 2621 | struct stat st; |
32f4334d | 2622 | Lisp_Object handler; |
570d7624 | 2623 | |
4b4deea2 | 2624 | absname = expand_and_dir_to_file (filename, BVAR (current_buffer, directory)); |
570d7624 | 2625 | |
32f4334d RS |
2626 | /* If the file name has special constructs in it, |
2627 | call the corresponding file handler. */ | |
199607e4 | 2628 | handler = Ffind_file_name_handler (absname, Qfile_directory_p); |
32f4334d | 2629 | if (!NILP (handler)) |
199607e4 | 2630 | return call2 (handler, Qfile_directory_p, absname); |
32f4334d | 2631 | |
b1d1b865 RS |
2632 | absname = ENCODE_FILE (absname); |
2633 | ||
42a5b22f | 2634 | if (stat (SSDATA (absname), &st) < 0) |
570d7624 | 2635 | return Qnil; |
f68c809d | 2636 | return S_ISDIR (st.st_mode) ? Qt : Qnil; |
570d7624 JB |
2637 | } |
2638 | ||
a7ca3326 | 2639 | DEFUN ("file-accessible-directory-p", Ffile_accessible_directory_p, |
16a97296 | 2640 | Sfile_accessible_directory_p, 1, 1, 0, |
e385ec41 RS |
2641 | doc: /* Return t if file FILENAME names a directory you can open. |
2642 | For the value to be t, FILENAME must specify the name of a directory as a file, | |
2643 | and the directory must allow you to open files in it. In order to use a | |
8c1a1077 PJ |
2644 | directory as a buffer's current directory, this predicate must return true. |
2645 | A directory name spec may be given instead; then the value is t | |
2646 | if the directory so specified exists and really is a readable and | |
2647 | searchable directory. */) | |
5842a27b | 2648 | (Lisp_Object filename) |
b72dea2a | 2649 | { |
32f4334d | 2650 | Lisp_Object handler; |
1a04498e | 2651 | int tem; |
d26859eb | 2652 | struct gcpro gcpro1; |
32f4334d RS |
2653 | |
2654 | /* If the file name has special constructs in it, | |
2655 | call the corresponding file handler. */ | |
49307295 | 2656 | handler = Ffind_file_name_handler (filename, Qfile_accessible_directory_p); |
32f4334d RS |
2657 | if (!NILP (handler)) |
2658 | return call2 (handler, Qfile_accessible_directory_p, filename); | |
2659 | ||
d26859eb | 2660 | GCPRO1 (filename); |
1a04498e KH |
2661 | tem = (NILP (Ffile_directory_p (filename)) |
2662 | || NILP (Ffile_executable_p (filename))); | |
d26859eb | 2663 | UNGCPRO; |
1a04498e | 2664 | return tem ? Qnil : Qt; |
b72dea2a JB |
2665 | } |
2666 | ||
f793dc6c | 2667 | DEFUN ("file-regular-p", Ffile_regular_p, Sfile_regular_p, 1, 1, 0, |
19a9c3b7 LH |
2668 | doc: /* Return t if FILENAME names a regular file. |
2669 | This is the sort of file that holds an ordinary stream of data bytes. | |
2670 | Symbolic links to regular files count as regular files. | |
2671 | See `file-symlink-p' to distinguish symlinks. */) | |
5842a27b | 2672 | (Lisp_Object filename) |
f793dc6c | 2673 | { |
199607e4 | 2674 | register Lisp_Object absname; |
f793dc6c RS |
2675 | struct stat st; |
2676 | Lisp_Object handler; | |
2677 | ||
4b4deea2 | 2678 | absname = expand_and_dir_to_file (filename, BVAR (current_buffer, directory)); |
f793dc6c RS |
2679 | |
2680 | /* If the file name has special constructs in it, | |
2681 | call the corresponding file handler. */ | |
199607e4 | 2682 | handler = Ffind_file_name_handler (absname, Qfile_regular_p); |
f793dc6c | 2683 | if (!NILP (handler)) |
199607e4 | 2684 | return call2 (handler, Qfile_regular_p, absname); |
f793dc6c | 2685 | |
b1d1b865 RS |
2686 | absname = ENCODE_FILE (absname); |
2687 | ||
c1c4693e RS |
2688 | #ifdef WINDOWSNT |
2689 | { | |
2690 | int result; | |
2691 | Lisp_Object tem = Vw32_get_true_file_attributes; | |
2692 | ||
2693 | /* Tell stat to use expensive method to get accurate info. */ | |
2694 | Vw32_get_true_file_attributes = Qt; | |
d5db4077 | 2695 | result = stat (SDATA (absname), &st); |
c1c4693e RS |
2696 | Vw32_get_true_file_attributes = tem; |
2697 | ||
2698 | if (result < 0) | |
2699 | return Qnil; | |
f68c809d | 2700 | return S_ISREG (st.st_mode) ? Qt : Qnil; |
c1c4693e RS |
2701 | } |
2702 | #else | |
42a5b22f | 2703 | if (stat (SSDATA (absname), &st) < 0) |
f793dc6c | 2704 | return Qnil; |
f68c809d | 2705 | return S_ISREG (st.st_mode) ? Qt : Qnil; |
c1c4693e | 2706 | #endif |
f793dc6c RS |
2707 | } |
2708 | \f | |
574c05e2 KK |
2709 | DEFUN ("file-selinux-context", Ffile_selinux_context, |
2710 | Sfile_selinux_context, 1, 1, 0, | |
2711 | doc: /* Return SELinux context of file named FILENAME, | |
2712 | as a list ("user", "role", "type", "range"). Return (nil, nil, nil, nil) | |
2713 | if file does not exist, is not accessible, or SELinux is disabled */) | |
5842a27b | 2714 | (Lisp_Object filename) |
574c05e2 KK |
2715 | { |
2716 | Lisp_Object absname; | |
2717 | Lisp_Object values[4]; | |
2718 | Lisp_Object handler; | |
2719 | #if HAVE_LIBSELINUX | |
2720 | security_context_t con; | |
2721 | int conlength; | |
2722 | context_t context; | |
2723 | #endif | |
2724 | ||
4b4deea2 | 2725 | absname = expand_and_dir_to_file (filename, BVAR (current_buffer, directory)); |
574c05e2 KK |
2726 | |
2727 | /* If the file name has special constructs in it, | |
2728 | call the corresponding file handler. */ | |
2729 | handler = Ffind_file_name_handler (absname, Qfile_selinux_context); | |
2730 | if (!NILP (handler)) | |
2731 | return call2 (handler, Qfile_selinux_context, absname); | |
2732 | ||
2733 | absname = ENCODE_FILE (absname); | |
2734 | ||
2735 | values[0] = Qnil; | |
2736 | values[1] = Qnil; | |
2737 | values[2] = Qnil; | |
2738 | values[3] = Qnil; | |
2739 | #if HAVE_LIBSELINUX | |
2740 | if (is_selinux_enabled ()) | |
2741 | { | |
b14aac08 | 2742 | conlength = lgetfilecon (SSDATA (absname), &con); |
574c05e2 KK |
2743 | if (conlength > 0) |
2744 | { | |
2745 | context = context_new (con); | |
45841e65 KK |
2746 | if (context_user_get (context)) |
2747 | values[0] = build_string (context_user_get (context)); | |
2748 | if (context_role_get (context)) | |
2749 | values[1] = build_string (context_role_get (context)); | |
2750 | if (context_type_get (context)) | |
2751 | values[2] = build_string (context_type_get (context)); | |
2752 | if (context_range_get (context)) | |
2753 | values[3] = build_string (context_range_get (context)); | |
574c05e2 KK |
2754 | context_free (context); |
2755 | } | |
2756 | if (con) | |
2757 | freecon (con); | |
2758 | } | |
2759 | #endif | |
2760 | ||
2761 | return Flist (sizeof(values) / sizeof(values[0]), values); | |
2762 | } | |
2763 | \f | |
2764 | DEFUN ("set-file-selinux-context", Fset_file_selinux_context, | |
2765 | Sset_file_selinux_context, 2, 2, 0, | |
2766 | doc: /* Set SELinux context of file named FILENAME to CONTEXT | |
2767 | as a list ("user", "role", "type", "range"). Has no effect if SELinux | |
2768 | is disabled. */) | |
5842a27b | 2769 | (Lisp_Object filename, Lisp_Object context) |
574c05e2 | 2770 | { |
0f4a96b5 | 2771 | Lisp_Object absname; |
574c05e2 | 2772 | Lisp_Object handler; |
0f4a96b5 JB |
2773 | #if HAVE_LIBSELINUX |
2774 | Lisp_Object encoded_absname; | |
574c05e2 KK |
2775 | Lisp_Object user = CAR_SAFE (context); |
2776 | Lisp_Object role = CAR_SAFE (CDR_SAFE (context)); | |
2777 | Lisp_Object type = CAR_SAFE (CDR_SAFE (CDR_SAFE (context))); | |
2778 | Lisp_Object range = CAR_SAFE (CDR_SAFE (CDR_SAFE (CDR_SAFE (context)))); | |
574c05e2 KK |
2779 | security_context_t con; |
2780 | int fail, conlength; | |
2781 | context_t parsed_con; | |
2782 | #endif | |
2783 | ||
4b4deea2 | 2784 | absname = Fexpand_file_name (filename, BVAR (current_buffer, directory)); |
574c05e2 KK |
2785 | |
2786 | /* If the file name has special constructs in it, | |
2787 | call the corresponding file handler. */ | |
2788 | handler = Ffind_file_name_handler (absname, Qset_file_selinux_context); | |
2789 | if (!NILP (handler)) | |
2790 | return call3 (handler, Qset_file_selinux_context, absname, context); | |
2791 | ||
0f4a96b5 | 2792 | #if HAVE_LIBSELINUX |
574c05e2 KK |
2793 | if (is_selinux_enabled ()) |
2794 | { | |
2795 | /* Get current file context. */ | |
a9b53ad3 | 2796 | encoded_absname = ENCODE_FILE (absname); |
b14aac08 | 2797 | conlength = lgetfilecon (SSDATA (encoded_absname), &con); |
574c05e2 KK |
2798 | if (conlength > 0) |
2799 | { | |
2800 | parsed_con = context_new (con); | |
2801 | /* Change the parts defined in the parameter.*/ | |
2802 | if (STRINGP (user)) | |
2803 | { | |
b14aac08 | 2804 | if (context_user_set (parsed_con, SSDATA (user))) |
574c05e2 KK |
2805 | error ("Doing context_user_set"); |
2806 | } | |
2807 | if (STRINGP (role)) | |
2808 | { | |
b14aac08 | 2809 | if (context_role_set (parsed_con, SSDATA (role))) |
574c05e2 KK |
2810 | error ("Doing context_role_set"); |
2811 | } | |
2812 | if (STRINGP (type)) | |
2813 | { | |
b14aac08 | 2814 | if (context_type_set (parsed_con, SSDATA (type))) |
574c05e2 KK |
2815 | error ("Doing context_type_set"); |
2816 | } | |
2817 | if (STRINGP (range)) | |
2818 | { | |
b14aac08 | 2819 | if (context_range_set (parsed_con, SSDATA (range))) |
574c05e2 KK |
2820 | error ("Doing context_range_set"); |
2821 | } | |
2822 | ||
2823 | /* Set the modified context back to the file. */ | |
b14aac08 PE |
2824 | fail = lsetfilecon (SSDATA (encoded_absname), |
2825 | context_str (parsed_con)); | |
574c05e2 KK |
2826 | if (fail) |
2827 | report_file_error ("Doing lsetfilecon", Fcons (absname, Qnil)); | |
2828 | ||
2829 | context_free (parsed_con); | |
2830 | } | |
2831 | else | |
2832 | report_file_error("Doing lgetfilecon", Fcons (absname, Qnil)); | |
2833 | ||
2834 | if (con) | |
2835 | freecon (con); | |
2836 | } | |
2837 | #endif | |
2838 | ||
2839 | return Qnil; | |
2840 | } | |
2841 | \f | |
570d7624 | 2842 | DEFUN ("file-modes", Ffile_modes, Sfile_modes, 1, 1, 0, |
d4a42098 KS |
2843 | doc: /* Return mode bits of file named FILENAME, as an integer. |
2844 | Return nil, if file does not exist or is not accessible. */) | |
5842a27b | 2845 | (Lisp_Object filename) |
570d7624 | 2846 | { |
199607e4 | 2847 | Lisp_Object absname; |
570d7624 | 2848 | struct stat st; |
32f4334d | 2849 | Lisp_Object handler; |
570d7624 | 2850 | |
4b4deea2 | 2851 | absname = expand_and_dir_to_file (filename, BVAR (current_buffer, directory)); |
570d7624 | 2852 | |
32f4334d RS |
2853 | /* If the file name has special constructs in it, |
2854 | call the corresponding file handler. */ | |
199607e4 | 2855 | handler = Ffind_file_name_handler (absname, Qfile_modes); |
32f4334d | 2856 | if (!NILP (handler)) |
199607e4 | 2857 | return call2 (handler, Qfile_modes, absname); |
32f4334d | 2858 | |
b1d1b865 RS |
2859 | absname = ENCODE_FILE (absname); |
2860 | ||
42a5b22f | 2861 | if (stat (SSDATA (absname), &st) < 0) |
570d7624 | 2862 | return Qnil; |
3ace87e3 | 2863 | |
570d7624 JB |
2864 | return make_number (st.st_mode & 07777); |
2865 | } | |
2866 | ||
09fbdf6c MC |
2867 | DEFUN ("set-file-modes", Fset_file_modes, Sset_file_modes, 2, 2, |
2868 | "(let ((file (read-file-name \"File: \"))) \ | |
2869 | (list file (read-file-modes nil file)))", | |
8c1a1077 | 2870 | doc: /* Set mode bits of file named FILENAME to MODE (an integer). |
ea429250 EZ |
2871 | Only the 12 low bits of MODE are used. |
2872 | ||
2873 | Interactively, mode bits are read by `read-file-modes', which accepts | |
712adc82 | 2874 | symbolic notation, like the `chmod' command from GNU Coreutils. */) |
5842a27b | 2875 | (Lisp_Object filename, Lisp_Object mode) |
570d7624 | 2876 | { |
b1d1b865 | 2877 | Lisp_Object absname, encoded_absname; |
32f4334d | 2878 | Lisp_Object handler; |
570d7624 | 2879 | |
4b4deea2 | 2880 | absname = Fexpand_file_name (filename, BVAR (current_buffer, directory)); |
b7826503 | 2881 | CHECK_NUMBER (mode); |
570d7624 | 2882 | |
32f4334d RS |
2883 | /* If the file name has special constructs in it, |
2884 | call the corresponding file handler. */ | |
199607e4 | 2885 | handler = Ffind_file_name_handler (absname, Qset_file_modes); |
32f4334d | 2886 | if (!NILP (handler)) |
199607e4 | 2887 | return call3 (handler, Qset_file_modes, absname, mode); |
32f4334d | 2888 | |
b1d1b865 RS |
2889 | encoded_absname = ENCODE_FILE (absname); |
2890 | ||
42a5b22f | 2891 | if (chmod (SSDATA (encoded_absname), XINT (mode)) < 0) |
199607e4 | 2892 | report_file_error ("Doing chmod", Fcons (absname, Qnil)); |
570d7624 JB |
2893 | |
2894 | return Qnil; | |
2895 | } | |
2896 | ||
c24e9a53 | 2897 | DEFUN ("set-default-file-modes", Fset_default_file_modes, Sset_default_file_modes, 1, 1, 0, |
8c1a1077 PJ |
2898 | doc: /* Set the file permission bits for newly created files. |
2899 | The argument MODE should be an integer; only the low 9 bits are used. | |
2900 | This setting is inherited by subprocesses. */) | |
5842a27b | 2901 | (Lisp_Object mode) |
36a8c287 | 2902 | { |
b7826503 | 2903 | CHECK_NUMBER (mode); |
199607e4 | 2904 | |
5f85ea58 | 2905 | umask ((~ XINT (mode)) & 0777); |
36a8c287 JB |
2906 | |
2907 | return Qnil; | |
2908 | } | |
2909 | ||
c24e9a53 | 2910 | DEFUN ("default-file-modes", Fdefault_file_modes, Sdefault_file_modes, 0, 0, 0, |
8c1a1077 PJ |
2911 | doc: /* Return the default file protection for created files. |
2912 | The value is an integer. */) | |
5842a27b | 2913 | (void) |
36a8c287 | 2914 | { |
5f85ea58 RS |
2915 | int realmask; |
2916 | Lisp_Object value; | |
36a8c287 | 2917 | |
5f85ea58 RS |
2918 | realmask = umask (0); |
2919 | umask (realmask); | |
36a8c287 | 2920 | |
46283abe | 2921 | XSETINT (value, (~ realmask) & 0777); |
5f85ea58 | 2922 | return value; |
36a8c287 | 2923 | } |
819da85b | 2924 | \f |
819da85b EZ |
2925 | |
2926 | DEFUN ("set-file-times", Fset_file_times, Sset_file_times, 1, 2, 0, | |
f839df0c | 2927 | doc: /* Set times of file FILENAME to TIMESTAMP. |
819da85b EZ |
2928 | Set both access and modification times. |
2929 | Return t on success, else nil. | |
f839df0c | 2930 | Use the current time if TIMESTAMP is nil. TIMESTAMP is in the format of |
819da85b | 2931 | `current-time'. */) |
f839df0c | 2932 | (Lisp_Object filename, Lisp_Object timestamp) |
819da85b EZ |
2933 | { |
2934 | Lisp_Object absname, encoded_absname; | |
2935 | Lisp_Object handler; | |
2936 | time_t sec; | |
2937 | int usec; | |
2938 | ||
f839df0c | 2939 | if (! lisp_time_argument (timestamp, &sec, &usec)) |
819da85b EZ |
2940 | error ("Invalid time specification"); |
2941 | ||
4b4deea2 | 2942 | absname = Fexpand_file_name (filename, BVAR (current_buffer, directory)); |
819da85b EZ |
2943 | |
2944 | /* If the file name has special constructs in it, | |
2945 | call the corresponding file handler. */ | |
2946 | handler = Ffind_file_name_handler (absname, Qset_file_times); | |
2947 | if (!NILP (handler)) | |
f839df0c | 2948 | return call3 (handler, Qset_file_times, absname, timestamp); |
819da85b EZ |
2949 | |
2950 | encoded_absname = ENCODE_FILE (absname); | |
5df5e07c | 2951 | |
819da85b EZ |
2952 | { |
2953 | EMACS_TIME t; | |
2954 | ||
2955 | EMACS_SET_SECS (t, sec); | |
2956 | EMACS_SET_USECS (t, usec); | |
2957 | ||
42a5b22f | 2958 | if (set_file_times (SSDATA (encoded_absname), t, t)) |
819da85b EZ |
2959 | { |
2960 | #ifdef DOS_NT | |
2961 | struct stat st; | |
2962 | ||
2963 | /* Setting times on a directory always fails. */ | |
f68c809d | 2964 | if (stat (SSDATA (encoded_absname), &st) == 0 && S_ISDIR (st.st_mode)) |
819da85b EZ |
2965 | return Qnil; |
2966 | #endif | |
2967 | report_file_error ("Setting file times", Fcons (absname, Qnil)); | |
2968 | return Qnil; | |
2969 | } | |
2970 | } | |
5df5e07c | 2971 | |
819da85b EZ |
2972 | return Qt; |
2973 | } | |
f793dc6c | 2974 | \f |
697c17a2 | 2975 | #ifdef HAVE_SYNC |
85ffea93 | 2976 | DEFUN ("unix-sync", Funix_sync, Sunix_sync, 0, 0, "", |
8c1a1077 | 2977 | doc: /* Tell Unix to finish all pending disk updates. */) |
5842a27b | 2978 | (void) |
85ffea93 RS |
2979 | { |
2980 | sync (); | |
2981 | return Qnil; | |
2982 | } | |
2983 | ||
697c17a2 | 2984 | #endif /* HAVE_SYNC */ |
85ffea93 | 2985 | |
570d7624 | 2986 | DEFUN ("file-newer-than-file-p", Ffile_newer_than_file_p, Sfile_newer_than_file_p, 2, 2, 0, |
8c1a1077 PJ |
2987 | doc: /* Return t if file FILE1 is newer than file FILE2. |
2988 | If FILE1 does not exist, the answer is nil; | |
2989 | otherwise, if FILE2 does not exist, the answer is t. */) | |
5842a27b | 2990 | (Lisp_Object file1, Lisp_Object file2) |
570d7624 | 2991 | { |
199607e4 | 2992 | Lisp_Object absname1, absname2; |
570d7624 JB |
2993 | struct stat st; |
2994 | int mtime1; | |
32f4334d | 2995 | Lisp_Object handler; |
09121adc | 2996 | struct gcpro gcpro1, gcpro2; |
570d7624 | 2997 | |
b7826503 PJ |
2998 | CHECK_STRING (file1); |
2999 | CHECK_STRING (file2); | |
570d7624 | 3000 | |
199607e4 RS |
3001 | absname1 = Qnil; |
3002 | GCPRO2 (absname1, file2); | |
4b4deea2 TT |
3003 | absname1 = expand_and_dir_to_file (file1, BVAR (current_buffer, directory)); |
3004 | absname2 = expand_and_dir_to_file (file2, BVAR (current_buffer, directory)); | |
09121adc | 3005 | UNGCPRO; |
570d7624 | 3006 | |
32f4334d RS |
3007 | /* If the file name has special constructs in it, |
3008 | call the corresponding file handler. */ | |
199607e4 | 3009 | handler = Ffind_file_name_handler (absname1, Qfile_newer_than_file_p); |
51cf6d37 | 3010 | if (NILP (handler)) |
199607e4 | 3011 | handler = Ffind_file_name_handler (absname2, Qfile_newer_than_file_p); |
32f4334d | 3012 | if (!NILP (handler)) |
199607e4 | 3013 | return call3 (handler, Qfile_newer_than_file_p, absname1, absname2); |
32f4334d | 3014 | |
b1d1b865 RS |
3015 | GCPRO2 (absname1, absname2); |
3016 | absname1 = ENCODE_FILE (absname1); | |
3017 | absname2 = ENCODE_FILE (absname2); | |
3018 | UNGCPRO; | |
3019 | ||
42a5b22f | 3020 | if (stat (SSDATA (absname1), &st) < 0) |
570d7624 JB |
3021 | return Qnil; |
3022 | ||
3023 | mtime1 = st.st_mtime; | |
3024 | ||
42a5b22f | 3025 | if (stat (SSDATA (absname2), &st) < 0) |
570d7624 JB |
3026 | return Qt; |
3027 | ||
3028 | return (mtime1 > st.st_mtime) ? Qt : Qnil; | |
3029 | } | |
3030 | \f | |
6fdaa9a0 KH |
3031 | #ifndef READ_BUF_SIZE |
3032 | #define READ_BUF_SIZE (64 << 10) | |
3033 | #endif | |
3034 | ||
98a7d268 KH |
3035 | /* This function is called after Lisp functions to decide a coding |
3036 | system are called, or when they cause an error. Before they are | |
3037 | called, the current buffer is set unibyte and it contains only a | |
3038 | newly inserted text (thus the buffer was empty before the | |
3039 | insertion). | |
3040 | ||
3041 | The functions may set markers, overlays, text properties, or even | |
3042 | alter the buffer contents, change the current buffer. | |
3043 | ||
3044 | Here, we reset all those changes by: | |
3045 | o set back the current buffer. | |
3046 | o move all markers and overlays to BEG. | |
3047 | o remove all text properties. | |
3048 | o set back the buffer multibyteness. */ | |
f736ffbf KH |
3049 | |
3050 | static Lisp_Object | |
971de7fb | 3051 | decide_coding_unwind (Lisp_Object unwind_data) |
f736ffbf | 3052 | { |
98a7d268 | 3053 | Lisp_Object multibyte, undo_list, buffer; |
f736ffbf | 3054 | |
98a7d268 KH |
3055 | multibyte = XCAR (unwind_data); |
3056 | unwind_data = XCDR (unwind_data); | |
3057 | undo_list = XCAR (unwind_data); | |
3058 | buffer = XCDR (unwind_data); | |
3059 | ||
3060 | if (current_buffer != XBUFFER (buffer)) | |
3061 | set_buffer_internal (XBUFFER (buffer)); | |
3062 | adjust_markers_for_delete (BEG, BEG_BYTE, Z, Z_BYTE); | |
3063 | adjust_overlays_for_delete (BEG, Z - BEG); | |
3064 | BUF_INTERVALS (current_buffer) = 0; | |
3065 | TEMP_SET_PT_BOTH (BEG, BEG_BYTE); | |
3066 | ||
3067 | /* Now we are safe to change the buffer's multibyteness directly. */ | |
4b4deea2 TT |
3068 | BVAR (current_buffer, enable_multibyte_characters) = multibyte; |
3069 | BVAR (current_buffer, undo_list) = undo_list; | |
f736ffbf KH |
3070 | |
3071 | return Qnil; | |
3072 | } | |
3073 | ||
55587f8a | 3074 | |
1b978129 | 3075 | /* Used to pass values from insert-file-contents to read_non_regular. */ |
55587f8a | 3076 | |
1b978129 | 3077 | static int non_regular_fd; |
ae19ba7c SM |
3078 | static EMACS_INT non_regular_inserted; |
3079 | static EMACS_INT non_regular_nbytes; | |
55587f8a | 3080 | |
55587f8a | 3081 | |
1b978129 | 3082 | /* Read from a non-regular file. |
438105ed | 3083 | Read non_regular_nbytes bytes max from non_regular_fd. |
1b978129 GM |
3084 | Non_regular_inserted specifies where to put the read bytes. |
3085 | Value is the number of bytes read. */ | |
55587f8a GM |
3086 | |
3087 | static Lisp_Object | |
9c8a2331 | 3088 | read_non_regular (Lisp_Object ignore) |
55587f8a | 3089 | { |
ae19ba7c | 3090 | EMACS_INT nbytes; |
efdc16c9 | 3091 | |
1b978129 GM |
3092 | immediate_quit = 1; |
3093 | QUIT; | |
3094 | nbytes = emacs_read (non_regular_fd, | |
5976c3fe PE |
3095 | ((char *) BEG_ADDR + PT_BYTE - BEG_BYTE |
3096 | + non_regular_inserted), | |
1b978129 | 3097 | non_regular_nbytes); |
1b978129 GM |
3098 | immediate_quit = 0; |
3099 | return make_number (nbytes); | |
3100 | } | |
55587f8a | 3101 | |
d0e2444e | 3102 | |
1b978129 GM |
3103 | /* Condition-case handler used when reading from non-regular files |
3104 | in insert-file-contents. */ | |
3105 | ||
3106 | static Lisp_Object | |
9c8a2331 | 3107 | read_non_regular_quit (Lisp_Object ignore) |
1b978129 | 3108 | { |
55587f8a GM |
3109 | return Qnil; |
3110 | } | |
3111 | ||
3112 | ||
570d7624 | 3113 | DEFUN ("insert-file-contents", Finsert_file_contents, Sinsert_file_contents, |
8c1a1077 PJ |
3114 | 1, 5, 0, |
3115 | doc: /* Insert contents of file FILENAME after point. | |
cf6d2357 | 3116 | Returns list of absolute file name and number of characters inserted. |
6f2528d8 MR |
3117 | If second argument VISIT is non-nil, the buffer's visited filename and |
3118 | last save file modtime are set, and it is marked unmodified. If | |
3119 | visiting and the file does not exist, visiting is completed before the | |
3120 | error is signaled. | |
3121 | ||
3122 | The optional third and fourth arguments BEG and END specify what portion | |
3123 | of the file to insert. These arguments count bytes in the file, not | |
3124 | characters in the buffer. If VISIT is non-nil, BEG and END must be nil. | |
3125 | ||
3126 | If optional fifth argument REPLACE is non-nil, replace the current | |
3127 | buffer contents (in the accessible portion) with the file contents. | |
3128 | This is better than simply deleting and inserting the whole thing | |
3129 | because (1) it preserves some marker positions and (2) it puts less data | |
3130 | in the undo list. When REPLACE is non-nil, the second return value is | |
3131 | the number of characters that replace previous buffer contents. | |
3132 | ||
3133 | This function does code conversion according to the value of | |
3134 | `coding-system-for-read' or `file-coding-system-alist', and sets the | |
3135 | variable `last-coding-system-used' to the coding system actually used. */) | |
5842a27b | 3136 | (Lisp_Object filename, Lisp_Object visit, Lisp_Object beg, Lisp_Object end, Lisp_Object replace) |
570d7624 JB |
3137 | { |
3138 | struct stat st; | |
3139 | register int fd; | |
ae19ba7c | 3140 | EMACS_INT inserted = 0; |
18a9f8d9 | 3141 | int nochange = 0; |
ae19ba7c SM |
3142 | register EMACS_INT how_much; |
3143 | register EMACS_INT unprocessed; | |
331379bf | 3144 | int count = SPECPDL_INDEX (); |
6f2528d8 MR |
3145 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5; |
3146 | Lisp_Object handler, val, insval, orig_filename, old_undo; | |
d6a3cc15 | 3147 | Lisp_Object p; |
ae19ba7c | 3148 | EMACS_INT total = 0; |
53c34c46 | 3149 | int not_regular = 0; |
5976c3fe | 3150 | char read_buf[READ_BUF_SIZE]; |
6fdaa9a0 | 3151 | struct coding_system coding; |
5976c3fe | 3152 | char buffer[1 << 14]; |
727a0b4a | 3153 | int replace_handled = 0; |
ec7adf26 | 3154 | int set_coding_system = 0; |
db327c7e | 3155 | Lisp_Object coding_system; |
1b978129 | 3156 | int read_quit = 0; |
490ee853 | 3157 | Lisp_Object old_Vdeactivate_mark = Vdeactivate_mark; |
68780e2a | 3158 | int we_locked_file = 0; |
db65a627 | 3159 | int deferred_remove_unwind_protect = 0; |
32f4334d | 3160 | |
95385625 RS |
3161 | if (current_buffer->base_buffer && ! NILP (visit)) |
3162 | error ("Cannot do file visiting in an indirect buffer"); | |
3163 | ||
4b4deea2 | 3164 | if (!NILP (BVAR (current_buffer, read_only))) |
95385625 RS |
3165 | Fbarf_if_buffer_read_only (); |
3166 | ||
32f4334d | 3167 | val = Qnil; |
d6a3cc15 | 3168 | p = Qnil; |
b1d1b865 | 3169 | orig_filename = Qnil; |
6f2528d8 | 3170 | old_undo = Qnil; |
32f4334d | 3171 | |
6f2528d8 | 3172 | GCPRO5 (filename, val, p, orig_filename, old_undo); |
570d7624 | 3173 | |
b7826503 | 3174 | CHECK_STRING (filename); |
570d7624 JB |
3175 | filename = Fexpand_file_name (filename, Qnil); |
3176 | ||
1c157f8d KH |
3177 | /* The value Qnil means that the coding system is not yet |
3178 | decided. */ | |
3179 | coding_system = Qnil; | |
3180 | ||
32f4334d RS |
3181 | /* If the file name has special constructs in it, |
3182 | call the corresponding file handler. */ | |
49307295 | 3183 | handler = Ffind_file_name_handler (filename, Qinsert_file_contents); |
32f4334d RS |
3184 | if (!NILP (handler)) |
3185 | { | |
3d0387c0 RS |
3186 | val = call6 (handler, Qinsert_file_contents, filename, |
3187 | visit, beg, end, replace); | |
03699b14 KR |
3188 | if (CONSP (val) && CONSP (XCDR (val))) |
3189 | inserted = XINT (XCAR (XCDR (val))); | |
32f4334d RS |
3190 | goto handled; |
3191 | } | |
3192 | ||
b1d1b865 RS |
3193 | orig_filename = filename; |
3194 | filename = ENCODE_FILE (filename); | |
3195 | ||
570d7624 JB |
3196 | fd = -1; |
3197 | ||
c1c4693e RS |
3198 | #ifdef WINDOWSNT |
3199 | { | |
3200 | Lisp_Object tem = Vw32_get_true_file_attributes; | |
3201 | ||
3202 | /* Tell stat to use expensive method to get accurate info. */ | |
3203 | Vw32_get_true_file_attributes = Qt; | |
42a5b22f | 3204 | total = stat (SSDATA (filename), &st); |
c1c4693e RS |
3205 | Vw32_get_true_file_attributes = tem; |
3206 | } | |
3207 | if (total < 0) | |
3208 | #else | |
42a5b22f | 3209 | if (stat (SSDATA (filename), &st) < 0) |
c1c4693e | 3210 | #endif /* WINDOWSNT */ |
570d7624 | 3211 | { |
99bc28f4 | 3212 | badopen: |
265a9e55 | 3213 | if (NILP (visit)) |
b1d1b865 | 3214 | report_file_error ("Opening input file", Fcons (orig_filename, Qnil)); |
570d7624 JB |
3215 | st.st_mtime = -1; |
3216 | how_much = 0; | |
0de6b8f4 | 3217 | if (!NILP (Vcoding_system_for_read)) |
22d92d6b | 3218 | Fset (Qbuffer_file_coding_system, Vcoding_system_for_read); |
570d7624 JB |
3219 | goto notfound; |
3220 | } | |
3221 | ||
be53b411 JB |
3222 | /* This code will need to be changed in order to work on named |
3223 | pipes, and it's probably just not worth it. So we should at | |
3224 | least signal an error. */ | |
99bc28f4 | 3225 | if (!S_ISREG (st.st_mode)) |
330bfe57 | 3226 | { |
d4b8687b RS |
3227 | not_regular = 1; |
3228 | ||
3229 | if (! NILP (visit)) | |
3230 | goto notfound; | |
3231 | ||
3232 | if (! NILP (replace) || ! NILP (beg) || ! NILP (end)) | |
24b1ddad KS |
3233 | xsignal2 (Qfile_error, |
3234 | build_string ("not a regular file"), orig_filename); | |
330bfe57 | 3235 | } |
be53b411 | 3236 | |
99bc28f4 | 3237 | if (fd < 0) |
42a5b22f | 3238 | if ((fd = emacs_open (SSDATA (filename), O_RDONLY, 0)) < 0) |
99bc28f4 KH |
3239 | goto badopen; |
3240 | ||
3241 | /* Replacement should preserve point as it preserves markers. */ | |
3242 | if (!NILP (replace)) | |
3243 | record_unwind_protect (restore_point_unwind, Fpoint_marker ()); | |
3244 | ||
3245 | record_unwind_protect (close_file_unwind, make_number (fd)); | |
3246 | ||
2a47c44d | 3247 | |
15cbd324 EZ |
3248 | /* Check whether the size is too large or negative, which can happen on a |
3249 | platform that allows file sizes greater than the maximum off_t value. */ | |
2a47c44d | 3250 | if (! not_regular |
d1f3d2af | 3251 | && ! (0 <= st.st_size && st.st_size <= BUF_BYTES_MAX)) |
11d300db | 3252 | error ("Maximum buffer size exceeded"); |
be53b411 | 3253 | |
9c856db9 GM |
3254 | /* Prevent redisplay optimizations. */ |
3255 | current_buffer->clip_changed = 1; | |
3256 | ||
9f57b6b4 KH |
3257 | if (!NILP (visit)) |
3258 | { | |
3259 | if (!NILP (beg) || !NILP (end)) | |
3260 | error ("Attempt to visit less than an entire file"); | |
3261 | if (BEG < Z && NILP (replace)) | |
3262 | error ("Cannot do file visiting in a non-empty buffer"); | |
3263 | } | |
7fded690 JB |
3264 | |
3265 | if (!NILP (beg)) | |
b7826503 | 3266 | CHECK_NUMBER (beg); |
7fded690 | 3267 | else |
2acfd7ae | 3268 | XSETFASTINT (beg, 0); |
7fded690 JB |
3269 | |
3270 | if (!NILP (end)) | |
b7826503 | 3271 | CHECK_NUMBER (end); |
7fded690 JB |
3272 | else |
3273 | { | |
d4b8687b RS |
3274 | if (! not_regular) |
3275 | { | |
3276 | XSETINT (end, st.st_size); | |
68c45bf0 | 3277 | |
d21dd12d GM |
3278 | /* The file size returned from stat may be zero, but data |
3279 | may be readable nonetheless, for example when this is a | |
3280 | file in the /proc filesystem. */ | |
3281 | if (st.st_size == 0) | |
3282 | XSETINT (end, READ_BUF_SIZE); | |
d4b8687b | 3283 | } |
7fded690 JB |
3284 | } |
3285 | ||
356a6224 | 3286 | if (EQ (Vcoding_system_for_read, Qauto_save_coding)) |
5560aecd | 3287 | { |
75421805 | 3288 | coding_system = coding_inherit_eol_type (Qutf_8_emacs, Qunix); |
5560aecd KH |
3289 | setup_coding_system (coding_system, &coding); |
3290 | /* Ensure we set Vlast_coding_system_used. */ | |
3291 | set_coding_system = 1; | |
3292 | } | |
356a6224 | 3293 | else if (BEG < Z) |
f736ffbf KH |
3294 | { |
3295 | /* Decide the coding system to use for reading the file now | |
3296 | because we can't use an optimized method for handling | |
3297 | `coding:' tag if the current buffer is not empty. */ | |
f736ffbf | 3298 | if (!NILP (Vcoding_system_for_read)) |
db327c7e | 3299 | coding_system = Vcoding_system_for_read; |
f736ffbf KH |
3300 | else |
3301 | { | |
3302 | /* Don't try looking inside a file for a coding system | |
3303 | specification if it is not seekable. */ | |
3304 | if (! not_regular && ! NILP (Vset_auto_coding_function)) | |
3305 | { | |
3306 | /* Find a coding system specified in the heading two | |
3307 | lines or in the tailing several lines of the file. | |
3308 | We assume that the 1K-byte and 3K-byte for heading | |
003a7eaa | 3309 | and tailing respectively are sufficient for this |
f736ffbf | 3310 | purpose. */ |
ae19ba7c | 3311 | EMACS_INT nread; |
f736ffbf KH |
3312 | |
3313 | if (st.st_size <= (1024 * 4)) | |
68c45bf0 | 3314 | nread = emacs_read (fd, read_buf, 1024 * 4); |
f736ffbf KH |
3315 | else |
3316 | { | |
68c45bf0 | 3317 | nread = emacs_read (fd, read_buf, 1024); |
f736ffbf KH |
3318 | if (nread >= 0) |
3319 | { | |
3320 | if (lseek (fd, st.st_size - (1024 * 3), 0) < 0) | |
3321 | report_file_error ("Setting file position", | |
3322 | Fcons (orig_filename, Qnil)); | |
68c45bf0 | 3323 | nread += emacs_read (fd, read_buf + nread, 1024 * 3); |
f736ffbf KH |
3324 | } |
3325 | } | |
feb9dc27 | 3326 | |
f736ffbf KH |
3327 | if (nread < 0) |
3328 | error ("IO error reading %s: %s", | |
d5db4077 | 3329 | SDATA (orig_filename), emacs_strerror (errno)); |
f736ffbf KH |
3330 | else if (nread > 0) |
3331 | { | |
f736ffbf | 3332 | struct buffer *prev = current_buffer; |
f839df0c | 3333 | Lisp_Object workbuf; |
685fc579 | 3334 | struct buffer *buf; |
f736ffbf KH |
3335 | |
3336 | record_unwind_protect (Fset_buffer, Fcurrent_buffer ()); | |
1d92afcd | 3337 | |
f839df0c PE |
3338 | workbuf = Fget_buffer_create (build_string (" *code-converting-work*")); |
3339 | buf = XBUFFER (workbuf); | |
685fc579 | 3340 | |
29ea8ae9 | 3341 | delete_all_overlays (buf); |
4b4deea2 TT |
3342 | BVAR (buf, directory) = BVAR (current_buffer, directory); |
3343 | BVAR (buf, read_only) = Qnil; | |
3344 | BVAR (buf, filename) = Qnil; | |
3345 | BVAR (buf, undo_list) = Qt; | |
29ea8ae9 SM |
3346 | eassert (buf->overlays_before == NULL); |
3347 | eassert (buf->overlays_after == NULL); | |
efdc16c9 | 3348 | |
685fc579 RS |
3349 | set_buffer_internal (buf); |
3350 | Ferase_buffer (); | |
4b4deea2 | 3351 | BVAR (buf, enable_multibyte_characters) = Qnil; |
685fc579 | 3352 | |
b68864e5 | 3353 | insert_1_both ((char *) read_buf, nread, nread, 0, 0, 0); |
f736ffbf | 3354 | TEMP_SET_PT_BOTH (BEG, BEG_BYTE); |
db327c7e | 3355 | coding_system = call2 (Vset_auto_coding_function, |
8f924df7 | 3356 | filename, make_number (nread)); |
f736ffbf | 3357 | set_buffer_internal (prev); |
efdc16c9 | 3358 | |
f736ffbf KH |
3359 | /* Discard the unwind protect for recovering the |
3360 | current buffer. */ | |
3361 | specpdl_ptr--; | |
3362 | ||
3363 | /* Rewind the file for the actual read done later. */ | |
3364 | if (lseek (fd, 0, 0) < 0) | |
3365 | report_file_error ("Setting file position", | |
3366 | Fcons (orig_filename, Qnil)); | |
3367 | } | |
3368 | } | |
feb9dc27 | 3369 | |
db327c7e | 3370 | if (NILP (coding_system)) |
f736ffbf KH |
3371 | { |
3372 | /* If we have not yet decided a coding system, check | |
3373 | file-coding-system-alist. */ | |
8f924df7 | 3374 | Lisp_Object args[6]; |
f736ffbf KH |
3375 | |
3376 | args[0] = Qinsert_file_contents, args[1] = orig_filename; | |
3377 | args[2] = visit, args[3] = beg, args[4] = end, args[5] = replace; | |
8f924df7 KH |
3378 | coding_system = Ffind_operation_coding_system (6, args); |
3379 | if (CONSP (coding_system)) | |
3380 | coding_system = XCAR (coding_system); | |
f736ffbf KH |
3381 | } |
3382 | } | |
c9e82392 | 3383 | |
db327c7e KH |
3384 | if (NILP (coding_system)) |
3385 | coding_system = Qundecided; | |
3386 | else | |
3387 | CHECK_CODING_SYSTEM (coding_system); | |
c8a6d68a | 3388 | |
4b4deea2 | 3389 | if (NILP (BVAR (current_buffer, enable_multibyte_characters))) |
237a6fd2 RS |
3390 | /* We must suppress all character code conversion except for |
3391 | end-of-line conversion. */ | |
db327c7e | 3392 | coding_system = raw_text_coding_system (coding_system); |
54369368 | 3393 | |
db327c7e KH |
3394 | setup_coding_system (coding_system, &coding); |
3395 | /* Ensure we set Vlast_coding_system_used. */ | |
3396 | set_coding_system = 1; | |
f736ffbf | 3397 | } |
6cf71bf1 | 3398 | |
3d0387c0 RS |
3399 | /* If requested, replace the accessible part of the buffer |
3400 | with the file contents. Avoid replacing text at the | |
3401 | beginning or end of the buffer that matches the file contents; | |
3dbcf3f6 RS |
3402 | that preserves markers pointing to the unchanged parts. |
3403 | ||
3404 | Here we implement this feature in an optimized way | |
3405 | for the case where code conversion is NOT needed. | |
3406 | The following if-statement handles the case of conversion | |
727a0b4a RS |
3407 | in a less optimal way. |
3408 | ||
3409 | If the code conversion is "automatic" then we try using this | |
3410 | method and hope for the best. | |
3411 | But if we discover the need for conversion, we give up on this method | |
3412 | and let the following if-statement handle the replace job. */ | |
3dbcf3f6 | 3413 | if (!NILP (replace) |
f736ffbf | 3414 | && BEGV < ZV |
db327c7e KH |
3415 | && (NILP (coding_system) |
3416 | || ! CODING_REQUIRE_DECODING (&coding))) | |
3d0387c0 | 3417 | { |
ec7adf26 RS |
3418 | /* same_at_start and same_at_end count bytes, |
3419 | because file access counts bytes | |
3420 | and BEG and END count bytes. */ | |
ae19ba7c SM |
3421 | EMACS_INT same_at_start = BEGV_BYTE; |
3422 | EMACS_INT same_at_end = ZV_BYTE; | |
3423 | EMACS_INT overlap; | |
6fdaa9a0 KH |
3424 | /* There is still a possibility we will find the need to do code |
3425 | conversion. If that happens, we set this variable to 1 to | |
727a0b4a | 3426 | give up on handling REPLACE in the optimized way. */ |
6fdaa9a0 | 3427 | int giveup_match_end = 0; |
9c28748f | 3428 | |
4d2a0879 RS |
3429 | if (XINT (beg) != 0) |
3430 | { | |
3431 | if (lseek (fd, XINT (beg), 0) < 0) | |
3432 | report_file_error ("Setting file position", | |
b1d1b865 | 3433 | Fcons (orig_filename, Qnil)); |
4d2a0879 RS |
3434 | } |
3435 | ||
3d0387c0 RS |
3436 | immediate_quit = 1; |
3437 | QUIT; | |
3438 | /* Count how many chars at the start of the file | |
3439 | match the text at the beginning of the buffer. */ | |
3440 | while (1) | |
3441 | { | |
ae19ba7c | 3442 | EMACS_INT nread, bufpos; |
3d0387c0 | 3443 | |
68c45bf0 | 3444 | nread = emacs_read (fd, buffer, sizeof buffer); |
3d0387c0 RS |
3445 | if (nread < 0) |
3446 | error ("IO error reading %s: %s", | |
5976c3fe | 3447 | SSDATA (orig_filename), emacs_strerror (errno)); |
3d0387c0 RS |
3448 | else if (nread == 0) |
3449 | break; | |
6fdaa9a0 | 3450 | |
db327c7e | 3451 | if (CODING_REQUIRE_DETECTION (&coding)) |
727a0b4a | 3452 | { |
5976c3fe PE |
3453 | coding_system = detect_coding_system ((unsigned char *) buffer, |
3454 | nread, nread, 1, 0, | |
db327c7e KH |
3455 | coding_system); |
3456 | setup_coding_system (coding_system, &coding); | |
727a0b4a RS |
3457 | } |
3458 | ||
db327c7e KH |
3459 | if (CODING_REQUIRE_DECODING (&coding)) |
3460 | /* We found that the file should be decoded somehow. | |
727a0b4a RS |
3461 | Let's give up here. */ |
3462 | { | |
3463 | giveup_match_end = 1; | |
3464 | break; | |
3465 | } | |
3466 | ||
3d0387c0 | 3467 | bufpos = 0; |
ec7adf26 | 3468 | while (bufpos < nread && same_at_start < ZV_BYTE |
6fdaa9a0 | 3469 | && FETCH_BYTE (same_at_start) == buffer[bufpos]) |
3d0387c0 RS |
3470 | same_at_start++, bufpos++; |
3471 | /* If we found a discrepancy, stop the scan. | |
8e6208c5 | 3472 | Otherwise loop around and scan the next bufferful. */ |
3d0387c0 RS |
3473 | if (bufpos != nread) |
3474 | break; | |
3475 | } | |
3476 | immediate_quit = 0; | |
3477 | /* If the file matches the buffer completely, | |
3478 | there's no need to replace anything. */ | |
ec7adf26 | 3479 | if (same_at_start - BEGV_BYTE == XINT (end)) |
3d0387c0 | 3480 | { |
68c45bf0 | 3481 | emacs_close (fd); |
a1d2b64a | 3482 | specpdl_ptr--; |
1051b3b3 | 3483 | /* Truncate the buffer to the size of the file. */ |
7dae4502 | 3484 | del_range_1 (same_at_start, same_at_end, 0, 0); |
3d0387c0 RS |
3485 | goto handled; |
3486 | } | |
3487 | immediate_quit = 1; | |
3488 | QUIT; | |
3489 | /* Count how many chars at the end of the file | |
6fdaa9a0 KH |
3490 | match the text at the end of the buffer. But, if we have |
3491 | already found that decoding is necessary, don't waste time. */ | |
3492 | while (!giveup_match_end) | |
3d0387c0 | 3493 | { |
ae19ba7c | 3494 | EMACS_INT total_read, nread, bufpos, curpos, trial; |
3d0387c0 RS |
3495 | |
3496 | /* At what file position are we now scanning? */ | |
ec7adf26 | 3497 | curpos = XINT (end) - (ZV_BYTE - same_at_end); |
fc81fa9e KH |
3498 | /* If the entire file matches the buffer tail, stop the scan. */ |
3499 | if (curpos == 0) | |
3500 | break; | |
3d0387c0 RS |
3501 | /* How much can we scan in the next step? */ |
3502 | trial = min (curpos, sizeof buffer); | |
3503 | if (lseek (fd, curpos - trial, 0) < 0) | |
3504 | report_file_error ("Setting file position", | |
b1d1b865 | 3505 | Fcons (orig_filename, Qnil)); |
3d0387c0 | 3506 | |
b02439c8 | 3507 | total_read = nread = 0; |
3d0387c0 RS |
3508 | while (total_read < trial) |
3509 | { | |
68c45bf0 | 3510 | nread = emacs_read (fd, buffer + total_read, trial - total_read); |
2bd2273e | 3511 | if (nread < 0) |
3d0387c0 | 3512 | error ("IO error reading %s: %s", |
d5db4077 | 3513 | SDATA (orig_filename), emacs_strerror (errno)); |
2bd2273e GM |
3514 | else if (nread == 0) |
3515 | break; | |
3d0387c0 RS |
3516 | total_read += nread; |
3517 | } | |
efdc16c9 | 3518 | |
8e6208c5 | 3519 | /* Scan this bufferful from the end, comparing with |
3d0387c0 RS |
3520 | the Emacs buffer. */ |
3521 | bufpos = total_read; | |
efdc16c9 | 3522 | |
3d0387c0 RS |
3523 | /* Compare with same_at_start to avoid counting some buffer text |
3524 | as matching both at the file's beginning and at the end. */ | |
3525 | while (bufpos > 0 && same_at_end > same_at_start | |
6fdaa9a0 | 3526 | && FETCH_BYTE (same_at_end - 1) == buffer[bufpos - 1]) |
3d0387c0 | 3527 | same_at_end--, bufpos--; |
727a0b4a | 3528 | |
3d0387c0 | 3529 | /* If we found a discrepancy, stop the scan. |
8e6208c5 | 3530 | Otherwise loop around and scan the preceding bufferful. */ |
3d0387c0 | 3531 | if (bufpos != 0) |
727a0b4a RS |
3532 | { |
3533 | /* If this discrepancy is because of code conversion, | |
3534 | we cannot use this method; giveup and try the other. */ | |
3535 | if (same_at_end > same_at_start | |
3536 | && FETCH_BYTE (same_at_end - 1) >= 0200 | |
4b4deea2 | 3537 | && ! NILP (BVAR (current_buffer, enable_multibyte_characters)) |
c8a6d68a | 3538 | && (CODING_MAY_REQUIRE_DECODING (&coding))) |
727a0b4a RS |
3539 | giveup_match_end = 1; |
3540 | break; | |
3541 | } | |
b02439c8 GM |
3542 | |
3543 | if (nread == 0) | |
3544 | break; | |
3d0387c0 RS |
3545 | } |
3546 | immediate_quit = 0; | |
9c28748f | 3547 | |
727a0b4a RS |
3548 | if (! giveup_match_end) |
3549 | { | |
ae19ba7c | 3550 | EMACS_INT temp; |
ec7adf26 | 3551 | |
727a0b4a | 3552 | /* We win! We can handle REPLACE the optimized way. */ |
9c28748f | 3553 | |
20f6783d RS |
3554 | /* Extend the start of non-matching text area to multibyte |
3555 | character boundary. */ | |
4b4deea2 | 3556 | if (! NILP (BVAR (current_buffer, enable_multibyte_characters))) |
20f6783d RS |
3557 | while (same_at_start > BEGV_BYTE |
3558 | && ! CHAR_HEAD_P (FETCH_BYTE (same_at_start))) | |
3559 | same_at_start--; | |
3560 | ||
3561 | /* Extend the end of non-matching text area to multibyte | |
71312b68 | 3562 | character boundary. */ |
4b4deea2 | 3563 | if (! NILP (BVAR (current_buffer, enable_multibyte_characters))) |
ec7adf26 RS |
3564 | while (same_at_end < ZV_BYTE |
3565 | && ! CHAR_HEAD_P (FETCH_BYTE (same_at_end))) | |
71312b68 RS |
3566 | same_at_end++; |
3567 | ||
727a0b4a | 3568 | /* Don't try to reuse the same piece of text twice. */ |
ec7adf26 RS |
3569 | overlap = (same_at_start - BEGV_BYTE |
3570 | - (same_at_end + st.st_size - ZV)); | |
727a0b4a RS |
3571 | if (overlap > 0) |
3572 | same_at_end += overlap; | |
9c28748f | 3573 | |
727a0b4a | 3574 | /* Arrange to read only the nonmatching middle part of the file. */ |
ec7adf26 RS |
3575 | XSETFASTINT (beg, XINT (beg) + (same_at_start - BEGV_BYTE)); |
3576 | XSETFASTINT (end, XINT (end) - (ZV_BYTE - same_at_end)); | |
3dbcf3f6 | 3577 | |
ec7adf26 | 3578 | del_range_byte (same_at_start, same_at_end, 0); |
727a0b4a | 3579 | /* Insert from the file at the proper position. */ |
ec7adf26 RS |
3580 | temp = BYTE_TO_CHAR (same_at_start); |
3581 | SET_PT_BOTH (temp, same_at_start); | |
727a0b4a RS |
3582 | |
3583 | /* If display currently starts at beginning of line, | |
3584 | keep it that way. */ | |
3585 | if (XBUFFER (XWINDOW (selected_window)->buffer) == current_buffer) | |
3586 | XWINDOW (selected_window)->start_at_line_beg = Fbolp (); | |
3587 | ||
3588 | replace_handled = 1; | |
3589 | } | |
3dbcf3f6 RS |
3590 | } |
3591 | ||
3592 | /* If requested, replace the accessible part of the buffer | |
3593 | with the file contents. Avoid replacing text at the | |
3594 | beginning or end of the buffer that matches the file contents; | |
3595 | that preserves markers pointing to the unchanged parts. | |
3596 | ||
3597 | Here we implement this feature for the case where code conversion | |
3598 | is needed, in a simple way that needs a lot of memory. | |
3599 | The preceding if-statement handles the case of no conversion | |
3600 | in a more optimized way. */ | |
f736ffbf | 3601 | if (!NILP (replace) && ! replace_handled && BEGV < ZV) |
3dbcf3f6 | 3602 | { |
13818c30 SM |
3603 | EMACS_INT same_at_start = BEGV_BYTE; |
3604 | EMACS_INT same_at_end = ZV_BYTE; | |
3605 | EMACS_INT same_at_start_charpos; | |
3606 | EMACS_INT inserted_chars; | |
3607 | EMACS_INT overlap; | |
3608 | EMACS_INT bufpos; | |
db327c7e | 3609 | unsigned char *decoded; |
ae19ba7c | 3610 | EMACS_INT temp; |
43aae36e | 3611 | EMACS_INT this = 0; |
8f924df7 | 3612 | int this_count = SPECPDL_INDEX (); |
4b4deea2 | 3613 | int multibyte = ! NILP (BVAR (current_buffer, enable_multibyte_characters)); |
5b359650 | 3614 | Lisp_Object conversion_buffer; |
db327c7e | 3615 | |
5b359650 | 3616 | conversion_buffer = code_conversion_save (1, multibyte); |
3dbcf3f6 RS |
3617 | |
3618 | /* First read the whole file, performing code conversion into | |
3619 | CONVERSION_BUFFER. */ | |
3620 | ||
727a0b4a | 3621 | if (lseek (fd, XINT (beg), 0) < 0) |
8f924df7 KH |
3622 | report_file_error ("Setting file position", |
3623 | Fcons (orig_filename, Qnil)); | |
727a0b4a | 3624 | |
3dbcf3f6 RS |
3625 | total = st.st_size; /* Total bytes in the file. */ |
3626 | how_much = 0; /* Bytes read from file so far. */ | |
3627 | inserted = 0; /* Bytes put into CONVERSION_BUFFER so far. */ | |
3628 | unprocessed = 0; /* Bytes not processed in previous loop. */ | |
3629 | ||
2ba48777 | 3630 | GCPRO1 (conversion_buffer); |
3dbcf3f6 RS |
3631 | while (how_much < total) |
3632 | { | |
db327c7e KH |
3633 | /* We read one bunch by one (READ_BUF_SIZE bytes) to allow |
3634 | quitting while reading a huge while. */ | |
3dbcf3f6 | 3635 | /* try is reserved in some compilers (Microsoft C) */ |
ae19ba7c SM |
3636 | EMACS_INT trytry = min (total - how_much, |
3637 | READ_BUF_SIZE - unprocessed); | |
3dbcf3f6 RS |
3638 | |
3639 | /* Allow quitting out of the actual I/O. */ | |
3640 | immediate_quit = 1; | |
3641 | QUIT; | |
db327c7e | 3642 | this = emacs_read (fd, read_buf + unprocessed, trytry); |
3dbcf3f6 RS |
3643 | immediate_quit = 0; |
3644 | ||
db327c7e | 3645 | if (this <= 0) |
43aae36e | 3646 | break; |
3dbcf3f6 RS |
3647 | |
3648 | how_much += this; | |
3649 | ||
bf1c0f27 SM |
3650 | BUF_TEMP_SET_PT (XBUFFER (conversion_buffer), |
3651 | BUF_Z (XBUFFER (conversion_buffer))); | |
5976c3fe PE |
3652 | decode_coding_c_string (&coding, (unsigned char *) read_buf, |
3653 | unprocessed + this, conversion_buffer); | |
db327c7e KH |
3654 | unprocessed = coding.carryover_bytes; |
3655 | if (coding.carryover_bytes > 0) | |
72af86bd | 3656 | memcpy (read_buf, coding.carryover, unprocessed); |
3dbcf3f6 | 3657 | } |
2ba48777 | 3658 | UNGCPRO; |
db327c7e | 3659 | emacs_close (fd); |
3dbcf3f6 | 3660 | |
db65a627 CY |
3661 | /* We should remove the unwind_protect calling |
3662 | close_file_unwind, but other stuff has been added the stack, | |
3663 | so defer the removal till we reach the `handled' label. */ | |
3664 | deferred_remove_unwind_protect = 1; | |
3665 | ||
db327c7e KH |
3666 | /* At this point, HOW_MUCH should equal TOTAL, or should be <= 0 |
3667 | if we couldn't read the file. */ | |
3dbcf3f6 | 3668 | |
43aae36e | 3669 | if (this < 0) |
4ed925c6 MB |
3670 | error ("IO error reading %s: %s", |
3671 | SDATA (orig_filename), emacs_strerror (errno)); | |
3dbcf3f6 | 3672 | |
db327c7e KH |
3673 | if (unprocessed > 0) |
3674 | { | |
3675 | coding.mode |= CODING_MODE_LAST_BLOCK; | |
5976c3fe PE |
3676 | decode_coding_c_string (&coding, (unsigned char *) read_buf, |
3677 | unprocessed, conversion_buffer); | |
db327c7e KH |
3678 | coding.mode &= ~CODING_MODE_LAST_BLOCK; |
3679 | } | |
3680 | ||
50b06221 | 3681 | coding_system = CODING_ID_NAME (coding.id); |
f6a07420 | 3682 | set_coding_system = 1; |
db327c7e | 3683 | decoded = BUF_BEG_ADDR (XBUFFER (conversion_buffer)); |
50342b35 KH |
3684 | inserted = (BUF_Z_BYTE (XBUFFER (conversion_buffer)) |
3685 | - BUF_BEG_BYTE (XBUFFER (conversion_buffer))); | |
db327c7e KH |
3686 | |
3687 | /* Compare the beginning of the converted string with the buffer | |
3688 | text. */ | |
3dbcf3f6 RS |
3689 | |
3690 | bufpos = 0; | |
3691 | while (bufpos < inserted && same_at_start < same_at_end | |
db327c7e | 3692 | && FETCH_BYTE (same_at_start) == decoded[bufpos]) |
3dbcf3f6 RS |
3693 | same_at_start++, bufpos++; |
3694 | ||
db327c7e | 3695 | /* If the file matches the head of buffer completely, |
3dbcf3f6 RS |
3696 | there's no need to replace anything. */ |
3697 | ||
3698 | if (bufpos == inserted) | |
3699 | { | |
3dbcf3f6 | 3700 | /* Truncate the buffer to the size of the file. */ |
18a9f8d9 SM |
3701 | if (same_at_start == same_at_end) |
3702 | nochange = 1; | |
3703 | else | |
3704 | del_range_byte (same_at_start, same_at_end, 0); | |
427f5aab | 3705 | inserted = 0; |
e8553dd1 KH |
3706 | |
3707 | unbind_to (this_count, Qnil); | |
3dbcf3f6 RS |
3708 | goto handled; |
3709 | } | |
3710 | ||
db327c7e KH |
3711 | /* Extend the start of non-matching text area to the previous |
3712 | multibyte character boundary. */ | |
4b4deea2 | 3713 | if (! NILP (BVAR (current_buffer, enable_multibyte_characters))) |
20f6783d RS |
3714 | while (same_at_start > BEGV_BYTE |
3715 | && ! CHAR_HEAD_P (FETCH_BYTE (same_at_start))) | |
3716 | same_at_start--; | |
3717 | ||
3dbcf3f6 RS |
3718 | /* Scan this bufferful from the end, comparing with |
3719 | the Emacs buffer. */ | |
3720 | bufpos = inserted; | |
3721 | ||
3722 | /* Compare with same_at_start to avoid counting some buffer text | |
3723 | as matching both at the file's beginning and at the end. */ | |
3724 | while (bufpos > 0 && same_at_end > same_at_start | |
db327c7e | 3725 | && FETCH_BYTE (same_at_end - 1) == decoded[bufpos - 1]) |
3dbcf3f6 RS |
3726 | same_at_end--, bufpos--; |
3727 | ||
db327c7e KH |
3728 | /* Extend the end of non-matching text area to the next |
3729 | multibyte character boundary. */ | |
4b4deea2 | 3730 | if (! NILP (BVAR (current_buffer, enable_multibyte_characters))) |
20f6783d RS |
3731 | while (same_at_end < ZV_BYTE |
3732 | && ! CHAR_HEAD_P (FETCH_BYTE (same_at_end))) | |
3733 | same_at_end++; | |
3734 | ||
3dbcf3f6 | 3735 | /* Don't try to reuse the same piece of text twice. */ |
ec7adf26 | 3736 | overlap = same_at_start - BEGV_BYTE - (same_at_end + inserted - ZV_BYTE); |
3dbcf3f6 RS |
3737 | if (overlap > 0) |
3738 | same_at_end += overlap; | |
3739 | ||
727a0b4a RS |
3740 | /* If display currently starts at beginning of line, |
3741 | keep it that way. */ | |
3742 | if (XBUFFER (XWINDOW (selected_window)->buffer) == current_buffer) | |
3743 | XWINDOW (selected_window)->start_at_line_beg = Fbolp (); | |
3744 | ||
3dbcf3f6 RS |
3745 | /* Replace the chars that we need to replace, |
3746 | and update INSERTED to equal the number of bytes | |
db327c7e | 3747 | we are taking from the decoded string. */ |
4b70e2c9 | 3748 | inserted -= (ZV_BYTE - same_at_end) + (same_at_start - BEGV_BYTE); |
427f5aab | 3749 | |
643c73b9 | 3750 | if (same_at_end != same_at_start) |
427f5aab KH |
3751 | { |
3752 | del_range_byte (same_at_start, same_at_end, 0); | |
3753 | temp = GPT; | |
3754 | same_at_start = GPT_BYTE; | |
3755 | } | |
643c73b9 RS |
3756 | else |
3757 | { | |
643c73b9 | 3758 | temp = BYTE_TO_CHAR (same_at_start); |
643c73b9 | 3759 | } |
427f5aab KH |
3760 | /* Insert from the file at the proper position. */ |
3761 | SET_PT_BOTH (temp, same_at_start); | |
50342b35 KH |
3762 | same_at_start_charpos |
3763 | = buf_bytepos_to_charpos (XBUFFER (conversion_buffer), | |
7f5d2c72 SM |
3764 | same_at_start - BEGV_BYTE |
3765 | + BUF_BEG_BYTE (XBUFFER (conversion_buffer))); | |
50342b35 KH |
3766 | inserted_chars |
3767 | = (buf_bytepos_to_charpos (XBUFFER (conversion_buffer), | |
7f5d2c72 SM |
3768 | same_at_start + inserted - BEGV_BYTE |
3769 | + BUF_BEG_BYTE (XBUFFER (conversion_buffer))) | |
50342b35 | 3770 | - same_at_start_charpos); |
d07af40d KH |
3771 | /* This binding is to avoid ask-user-about-supersession-threat |
3772 | being called in insert_from_buffer (via in | |
3773 | prepare_to_modify_buffer). */ | |
3774 | specbind (intern ("buffer-file-name"), Qnil); | |
db327c7e | 3775 | insert_from_buffer (XBUFFER (conversion_buffer), |
50342b35 | 3776 | same_at_start_charpos, inserted_chars, 0); |
427f5aab KH |
3777 | /* Set `inserted' to the number of inserted characters. */ |
3778 | inserted = PT - temp; | |
77343e1d KH |
3779 | /* Set point before the inserted characters. */ |
3780 | SET_PT_BOTH (temp, same_at_start); | |
3dbcf3f6 | 3781 | |
db327c7e | 3782 | unbind_to (this_count, Qnil); |
3dbcf3f6 | 3783 | |
3dbcf3f6 | 3784 | goto handled; |
3d0387c0 RS |
3785 | } |
3786 | ||
d4b8687b RS |
3787 | if (! not_regular) |
3788 | { | |
3789 | register Lisp_Object temp; | |
7fded690 | 3790 | |
d4b8687b | 3791 | total = XINT (end) - XINT (beg); |
570d7624 | 3792 | |
d4b8687b RS |
3793 | /* Make sure point-max won't overflow after this insertion. */ |
3794 | XSETINT (temp, total); | |
3795 | if (total != XINT (temp)) | |
3796 | error ("Maximum buffer size exceeded"); | |
3797 | } | |
3798 | else | |
3799 | /* For a special file, all we can do is guess. */ | |
3800 | total = READ_BUF_SIZE; | |
570d7624 | 3801 | |
8b913b57 | 3802 | if (NILP (visit) && total > 0) |
68780e2a RS |
3803 | { |
3804 | #ifdef CLASH_DETECTION | |
4b4deea2 | 3805 | if (!NILP (BVAR (current_buffer, file_truename)) |
68780e2a | 3806 | /* Make binding buffer-file-name to nil effective. */ |
4b4deea2 | 3807 | && !NILP (BVAR (current_buffer, filename)) |
68780e2a RS |
3808 | && SAVE_MODIFF >= MODIFF) |
3809 | we_locked_file = 1; | |
3810 | #endif /* CLASH_DETECTION */ | |
3811 | prepare_to_modify_buffer (GPT, GPT, NULL); | |
3812 | } | |
570d7624 | 3813 | |
7fe52289 | 3814 | move_gap (PT); |
7fded690 JB |
3815 | if (GAP_SIZE < total) |
3816 | make_gap (total - GAP_SIZE); | |
3817 | ||
a1d2b64a | 3818 | if (XINT (beg) != 0 || !NILP (replace)) |
7fded690 JB |
3819 | { |
3820 | if (lseek (fd, XINT (beg), 0) < 0) | |
b1d1b865 RS |
3821 | report_file_error ("Setting file position", |
3822 | Fcons (orig_filename, Qnil)); | |
7fded690 JB |
3823 | } |
3824 | ||
6fdaa9a0 | 3825 | /* In the following loop, HOW_MUCH contains the total bytes read so |
c8a6d68a KH |
3826 | far for a regular file, and not changed for a special file. But, |
3827 | before exiting the loop, it is set to a negative value if I/O | |
3828 | error occurs. */ | |
a1d2b64a | 3829 | how_much = 0; |
efdc16c9 | 3830 | |
6fdaa9a0 KH |
3831 | /* Total bytes inserted. */ |
3832 | inserted = 0; | |
efdc16c9 | 3833 | |
c8a6d68a | 3834 | /* Here, we don't do code conversion in the loop. It is done by |
db327c7e | 3835 | decode_coding_gap after all data are read into the buffer. */ |
1b978129 | 3836 | { |
ae19ba7c | 3837 | EMACS_INT gap_size = GAP_SIZE; |
efdc16c9 | 3838 | |
1b978129 GM |
3839 | while (how_much < total) |
3840 | { | |
5e570b75 | 3841 | /* try is reserved in some compilers (Microsoft C) */ |
ae19ba7c SM |
3842 | EMACS_INT trytry = min (total - how_much, READ_BUF_SIZE); |
3843 | EMACS_INT this; | |
570d7624 | 3844 | |
1b978129 GM |
3845 | if (not_regular) |
3846 | { | |
f839df0c | 3847 | Lisp_Object nbytes; |
570d7624 | 3848 | |
1b978129 GM |
3849 | /* Maybe make more room. */ |
3850 | if (gap_size < trytry) | |
3851 | { | |
3852 | make_gap (total - gap_size); | |
3853 | gap_size = GAP_SIZE; | |
3854 | } | |
3855 | ||
3856 | /* Read from the file, capturing `quit'. When an | |
3857 | error occurs, end the loop, and arrange for a quit | |
3858 | to be signaled after decoding the text we read. */ | |
3859 | non_regular_fd = fd; | |
3860 | non_regular_inserted = inserted; | |
3861 | non_regular_nbytes = trytry; | |
f839df0c PE |
3862 | nbytes = internal_condition_case_1 (read_non_regular, |
3863 | Qnil, Qerror, | |
3864 | read_non_regular_quit); | |
3865 | if (NILP (nbytes)) | |
1b978129 GM |
3866 | { |
3867 | read_quit = 1; | |
3868 | break; | |
3869 | } | |
3870 | ||
f839df0c | 3871 | this = XINT (nbytes); |
1b978129 GM |
3872 | } |
3873 | else | |
3874 | { | |
3875 | /* Allow quitting out of the actual I/O. We don't make text | |
3876 | part of the buffer until all the reading is done, so a C-g | |
3877 | here doesn't do any harm. */ | |
3878 | immediate_quit = 1; | |
3879 | QUIT; | |
5976c3fe PE |
3880 | this = emacs_read (fd, |
3881 | ((char *) BEG_ADDR + PT_BYTE - BEG_BYTE | |
3882 | + inserted), | |
3883 | trytry); | |
1b978129 GM |
3884 | immediate_quit = 0; |
3885 | } | |
efdc16c9 | 3886 | |
1b978129 GM |
3887 | if (this <= 0) |
3888 | { | |
3889 | how_much = this; | |
3890 | break; | |
3891 | } | |
3892 | ||
3893 | gap_size -= this; | |
3894 | ||
3895 | /* For a regular file, where TOTAL is the real size, | |
3896 | count HOW_MUCH to compare with it. | |
3897 | For a special file, where TOTAL is just a buffer size, | |
3898 | so don't bother counting in HOW_MUCH. | |
3899 | (INSERTED is where we count the number of characters inserted.) */ | |
3900 | if (! not_regular) | |
3901 | how_much += this; | |
3902 | inserted += this; | |
3903 | } | |
3904 | } | |
3905 | ||
68780e2a RS |
3906 | /* Now we have read all the file data into the gap. |
3907 | If it was empty, undo marking the buffer modified. */ | |
3908 | ||
3909 | if (inserted == 0) | |
3910 | { | |
6840d350 | 3911 | #ifdef CLASH_DETECTION |
68780e2a | 3912 | if (we_locked_file) |
4b4deea2 | 3913 | unlock_file (BVAR (current_buffer, file_truename)); |
6840d350 | 3914 | #endif |
68780e2a RS |
3915 | Vdeactivate_mark = old_Vdeactivate_mark; |
3916 | } | |
83c1cf6d RS |
3917 | else |
3918 | Vdeactivate_mark = Qt; | |
68780e2a | 3919 | |
1b978129 GM |
3920 | /* Make the text read part of the buffer. */ |
3921 | GAP_SIZE -= inserted; | |
3922 | GPT += inserted; | |
3923 | GPT_BYTE += inserted; | |
3924 | ZV += inserted; | |
3925 | ZV_BYTE += inserted; | |
3926 | Z += inserted; | |
3927 | Z_BYTE += inserted; | |
6fdaa9a0 | 3928 | |
c8a6d68a KH |
3929 | if (GAP_SIZE > 0) |
3930 | /* Put an anchor to ensure multi-byte form ends at gap. */ | |
3931 | *GPT_ADDR = 0; | |
d4b8687b | 3932 | |
68c45bf0 | 3933 | emacs_close (fd); |
6fdaa9a0 | 3934 | |
c8a6d68a KH |
3935 | /* Discard the unwind protect for closing the file. */ |
3936 | specpdl_ptr--; | |
6fdaa9a0 | 3937 | |
c8a6d68a KH |
3938 | if (how_much < 0) |
3939 | error ("IO error reading %s: %s", | |
d5db4077 | 3940 | SDATA (orig_filename), emacs_strerror (errno)); |
ec7adf26 | 3941 | |
f8569325 DL |
3942 | notfound: |
3943 | ||
db327c7e | 3944 | if (NILP (coding_system)) |
c8a6d68a | 3945 | { |
2df42e09 | 3946 | /* The coding system is not yet decided. Decide it by an |
dfe35e7b RS |
3947 | optimized method for handling `coding:' tag. |
3948 | ||
3949 | Note that we can get here only if the buffer was empty | |
3950 | before the insertion. */ | |
f736ffbf | 3951 | |
2df42e09 | 3952 | if (!NILP (Vcoding_system_for_read)) |
db327c7e | 3953 | coding_system = Vcoding_system_for_read; |
2df42e09 KH |
3954 | else |
3955 | { | |
98a7d268 KH |
3956 | /* Since we are sure that the current buffer was empty |
3957 | before the insertion, we can toggle | |
3958 | enable-multibyte-characters directly here without taking | |
9a7f80aa KH |
3959 | care of marker adjustment. By this way, we can run Lisp |
3960 | program safely before decoding the inserted text. */ | |
98a7d268 | 3961 | Lisp_Object unwind_data; |
f839df0c | 3962 | int count1 = SPECPDL_INDEX (); |
2df42e09 | 3963 | |
4b4deea2 TT |
3964 | unwind_data = Fcons (BVAR (current_buffer, enable_multibyte_characters), |
3965 | Fcons (BVAR (current_buffer, undo_list), | |
98a7d268 | 3966 | Fcurrent_buffer ())); |
4b4deea2 TT |
3967 | BVAR (current_buffer, enable_multibyte_characters) = Qnil; |
3968 | BVAR (current_buffer, undo_list) = Qt; | |
98a7d268 KH |
3969 | record_unwind_protect (decide_coding_unwind, unwind_data); |
3970 | ||
3971 | if (inserted > 0 && ! NILP (Vset_auto_coding_function)) | |
3972 | { | |
db327c7e | 3973 | coding_system = call2 (Vset_auto_coding_function, |
8f924df7 | 3974 | filename, make_number (inserted)); |
2df42e09 | 3975 | } |
f736ffbf | 3976 | |
db327c7e | 3977 | if (NILP (coding_system)) |
2df42e09 KH |
3978 | { |
3979 | /* If the coding system is not yet decided, check | |
3980 | file-coding-system-alist. */ | |
8f924df7 | 3981 | Lisp_Object args[6]; |
f736ffbf | 3982 | |
2df42e09 KH |
3983 | args[0] = Qinsert_file_contents, args[1] = orig_filename; |
3984 | args[2] = visit, args[3] = beg, args[4] = end, args[5] = Qnil; | |
8f924df7 KH |
3985 | coding_system = Ffind_operation_coding_system (6, args); |
3986 | if (CONSP (coding_system)) | |
3987 | coding_system = XCAR (coding_system); | |
f736ffbf | 3988 | } |
f839df0c | 3989 | unbind_to (count1, Qnil); |
98a7d268 | 3990 | inserted = Z_BYTE - BEG_BYTE; |
2df42e09 | 3991 | } |
f736ffbf | 3992 | |
db327c7e KH |
3993 | if (NILP (coding_system)) |
3994 | coding_system = Qundecided; | |
3995 | else | |
3996 | CHECK_CODING_SYSTEM (coding_system); | |
f736ffbf | 3997 | |
4b4deea2 | 3998 | if (NILP (BVAR (current_buffer, enable_multibyte_characters))) |
237a6fd2 | 3999 | /* We must suppress all character code conversion except for |
2df42e09 | 4000 | end-of-line conversion. */ |
db327c7e | 4001 | coding_system = raw_text_coding_system (coding_system); |
db327c7e KH |
4002 | setup_coding_system (coding_system, &coding); |
4003 | /* Ensure we set Vlast_coding_system_used. */ | |
4004 | set_coding_system = 1; | |
2df42e09 | 4005 | } |
f736ffbf | 4006 | |
db327c7e | 4007 | if (!NILP (visit)) |
8c3b9441 | 4008 | { |
db327c7e | 4009 | /* When we visit a file by raw-text, we change the buffer to |
9a7f80aa | 4010 | unibyte. */ |
db327c7e KH |
4011 | if (CODING_FOR_UNIBYTE (&coding) |
4012 | /* Can't do this if part of the buffer might be preserved. */ | |
4013 | && NILP (replace)) | |
4014 | /* Visiting a file with these coding system makes the buffer | |
4015 | unibyte. */ | |
4b4deea2 | 4016 | BVAR (current_buffer, enable_multibyte_characters) = Qnil; |
8c3b9441 KH |
4017 | } |
4018 | ||
4b4deea2 | 4019 | coding.dst_multibyte = ! NILP (BVAR (current_buffer, enable_multibyte_characters)); |
5b359650 | 4020 | if (CODING_MAY_REQUIRE_DECODING (&coding) |
1c157f8d | 4021 | && (inserted > 0 || CODING_REQUIRE_FLUSHING (&coding))) |
2df42e09 | 4022 | { |
db327c7e KH |
4023 | move_gap_both (PT, PT_BYTE); |
4024 | GAP_SIZE += inserted; | |
4025 | ZV_BYTE -= inserted; | |
4026 | Z_BYTE -= inserted; | |
4027 | ZV -= inserted; | |
4028 | Z -= inserted; | |
4029 | decode_coding_gap (&coding, inserted, inserted); | |
4030 | inserted = coding.produced_char; | |
5b359650 | 4031 | coding_system = CODING_ID_NAME (coding.id); |
2df42e09 | 4032 | } |
db327c7e KH |
4033 | else if (inserted > 0) |
4034 | adjust_after_insert (PT, PT_BYTE, PT + inserted, PT_BYTE + inserted, | |
4035 | inserted); | |
570d7624 | 4036 | |
cf6d2357 RS |
4037 | /* Now INSERTED is measured in characters. */ |
4038 | ||
32f4334d | 4039 | handled: |
570d7624 | 4040 | |
db65a627 CY |
4041 | if (deferred_remove_unwind_protect) |
4042 | /* If requested above, discard the unwind protect for closing the | |
4043 | file. */ | |
4044 | specpdl_ptr--; | |
4045 | ||
265a9e55 | 4046 | if (!NILP (visit)) |
570d7624 | 4047 | { |
4b4deea2 TT |
4048 | if (!EQ (BVAR (current_buffer, undo_list), Qt) && !nochange) |
4049 | BVAR (current_buffer, undo_list) = Qnil; | |
62bcf009 | 4050 | |
a7e82472 RS |
4051 | if (NILP (handler)) |
4052 | { | |
4053 | current_buffer->modtime = st.st_mtime; | |
58b963f7 | 4054 | current_buffer->modtime_size = st.st_size; |
4b4deea2 | 4055 | BVAR (current_buffer, filename) = orig_filename; |
a7e82472 | 4056 | } |
62bcf009 | 4057 | |
95385625 | 4058 | SAVE_MODIFF = MODIFF; |
0b5397c2 | 4059 | BUF_AUTOSAVE_MODIFF (current_buffer) = MODIFF; |
4b4deea2 | 4060 | XSETFASTINT (BVAR (current_buffer, save_length), Z - BEG); |
570d7624 | 4061 | #ifdef CLASH_DETECTION |
32f4334d RS |
4062 | if (NILP (handler)) |
4063 | { | |
4b4deea2 TT |
4064 | if (!NILP (BVAR (current_buffer, file_truename))) |
4065 | unlock_file (BVAR (current_buffer, file_truename)); | |
32f4334d RS |
4066 | unlock_file (filename); |
4067 | } | |
570d7624 | 4068 | #endif /* CLASH_DETECTION */ |
330bfe57 | 4069 | if (not_regular) |
24b1ddad KS |
4070 | xsignal2 (Qfile_error, |
4071 | build_string ("not a regular file"), orig_filename); | |
570d7624 JB |
4072 | } |
4073 | ||
b6426b03 | 4074 | if (set_coding_system) |
8f924df7 | 4075 | Vlast_coding_system_used = coding_system; |
b6426b03 | 4076 | |
2080470e | 4077 | if (! NILP (Ffboundp (Qafter_insert_file_set_coding))) |
b6426b03 | 4078 | { |
37a3c774 KH |
4079 | insval = call2 (Qafter_insert_file_set_coding, make_number (inserted), |
4080 | visit); | |
b6426b03 KH |
4081 | if (! NILP (insval)) |
4082 | { | |
4083 | CHECK_NUMBER (insval); | |
4084 | inserted = XFASTINT (insval); | |
4085 | } | |
4086 | } | |
4087 | ||
6420e80c | 4088 | /* Decode file format. */ |
c8a6d68a | 4089 | if (inserted > 0) |
0d420e88 | 4090 | { |
6420e80c | 4091 | /* Don't run point motion or modification hooks when decoding. */ |
f839df0c | 4092 | int count1 = SPECPDL_INDEX (); |
ae19ba7c | 4093 | EMACS_INT old_inserted = inserted; |
6f2528d8 MR |
4094 | specbind (Qinhibit_point_motion_hooks, Qt); |
4095 | specbind (Qinhibit_modification_hooks, Qt); | |
4096 | ||
6420e80c | 4097 | /* Save old undo list and don't record undo for decoding. */ |
4b4deea2 TT |
4098 | old_undo = BVAR (current_buffer, undo_list); |
4099 | BVAR (current_buffer, undo_list) = Qt; | |
efdc16c9 | 4100 | |
6f2528d8 | 4101 | if (NILP (replace)) |
ed8e506f | 4102 | { |
6f2528d8 MR |
4103 | insval = call3 (Qformat_decode, |
4104 | Qnil, make_number (inserted), visit); | |
4105 | CHECK_NUMBER (insval); | |
4106 | inserted = XFASTINT (insval); | |
4107 | } | |
4108 | else | |
4109 | { | |
4110 | /* If REPLACE is non-nil and we succeeded in not replacing the | |
6420e80c AS |
4111 | beginning or end of the buffer text with the file's contents, |
4112 | call format-decode with `point' positioned at the beginning | |
4113 | of the buffer and `inserted' equalling the number of | |
4114 | characters in the buffer. Otherwise, format-decode might | |
4115 | fail to correctly analyze the beginning or end of the buffer. | |
4116 | Hence we temporarily save `point' and `inserted' here and | |
4117 | restore `point' iff format-decode did not insert or delete | |
4118 | any text. Otherwise we leave `point' at point-min. */ | |
ae19ba7c SM |
4119 | EMACS_INT opoint = PT; |
4120 | EMACS_INT opoint_byte = PT_BYTE; | |
4121 | EMACS_INT oinserted = ZV - BEGV; | |
cac4219c | 4122 | int ochars_modiff = CHARS_MODIFF; |
1f163f28 MA |
4123 | |
4124 | TEMP_SET_PT_BOTH (BEGV, BEGV_BYTE); | |
6f2528d8 MR |
4125 | insval = call3 (Qformat_decode, |
4126 | Qnil, make_number (oinserted), visit); | |
4127 | CHECK_NUMBER (insval); | |
cac4219c MR |
4128 | if (ochars_modiff == CHARS_MODIFF) |
4129 | /* format_decode didn't modify buffer's characters => move | |
4130 | point back to position before inserted text and leave | |
6420e80c | 4131 | value of inserted alone. */ |
6f2528d8 | 4132 | SET_PT_BOTH (opoint, opoint_byte); |
cac4219c MR |
4133 | else |
4134 | /* format_decode modified buffer's characters => consider | |
6420e80c | 4135 | entire buffer changed and leave point at point-min. */ |
cac4219c | 4136 | inserted = XFASTINT (insval); |
ed8e506f | 4137 | } |
efdc16c9 | 4138 | |
6f2528d8 | 4139 | /* For consistency with format-decode call these now iff inserted > 0 |
6420e80c | 4140 | (martin 2007-06-28). */ |
6f2528d8 MR |
4141 | p = Vafter_insert_file_functions; |
4142 | while (CONSP (p)) | |
4143 | { | |
4144 | if (NILP (replace)) | |
4145 | { | |
4146 | insval = call1 (XCAR (p), make_number (inserted)); | |
4147 | if (!NILP (insval)) | |
4148 | { | |
4149 | CHECK_NUMBER (insval); | |
4150 | inserted = XFASTINT (insval); | |
4151 | } | |
4152 | } | |
4153 | else | |
4154 | { | |
6420e80c AS |
4155 | /* For the rationale of this see the comment on |
4156 | format-decode above. */ | |
ae19ba7c SM |
4157 | EMACS_INT opoint = PT; |
4158 | EMACS_INT opoint_byte = PT_BYTE; | |
4159 | EMACS_INT oinserted = ZV - BEGV; | |
cac4219c | 4160 | int ochars_modiff = CHARS_MODIFF; |
1f163f28 | 4161 | |
6f2528d8 MR |
4162 | TEMP_SET_PT_BOTH (BEGV, BEGV_BYTE); |
4163 | insval = call1 (XCAR (p), make_number (oinserted)); | |
4164 | if (!NILP (insval)) | |
4165 | { | |
4166 | CHECK_NUMBER (insval); | |
cac4219c MR |
4167 | if (ochars_modiff == CHARS_MODIFF) |
4168 | /* after_insert_file_functions didn't modify | |
4169 | buffer's characters => move point back to | |
4170 | position before inserted text and leave value of | |
6420e80c | 4171 | inserted alone. */ |
6f2528d8 | 4172 | SET_PT_BOTH (opoint, opoint_byte); |
cac4219c MR |
4173 | else |
4174 | /* after_insert_file_functions did modify buffer's | |
4175 | characters => consider entire buffer changed and | |
6420e80c | 4176 | leave point at point-min. */ |
cac4219c | 4177 | inserted = XFASTINT (insval); |
6f2528d8 MR |
4178 | } |
4179 | } | |
4180 | ||
4181 | QUIT; | |
4182 | p = XCDR (p); | |
ed8e506f | 4183 | } |
efdc16c9 | 4184 | |
6f2528d8 MR |
4185 | if (NILP (visit)) |
4186 | { | |
4b4deea2 | 4187 | BVAR (current_buffer, undo_list) = old_undo; |
6420e80c | 4188 | if (CONSP (old_undo) && inserted != old_inserted) |
6f2528d8 | 4189 | { |
6420e80c AS |
4190 | /* Adjust the last undo record for the size change during |
4191 | the format conversion. */ | |
6f2528d8 | 4192 | Lisp_Object tem = XCAR (old_undo); |
6420e80c AS |
4193 | if (CONSP (tem) && INTEGERP (XCAR (tem)) |
4194 | && INTEGERP (XCDR (tem)) | |
4195 | && XFASTINT (XCDR (tem)) == PT + old_inserted) | |
4196 | XSETCDR (tem, make_number (PT + inserted)); | |
6f2528d8 MR |
4197 | } |
4198 | } | |
6f2528d8 | 4199 | else |
1bc99c9c | 4200 | /* If undo_list was Qt before, keep it that way. |
6420e80c | 4201 | Otherwise start with an empty undo_list. */ |
4b4deea2 | 4202 | BVAR (current_buffer, undo_list) = EQ (old_undo, Qt) ? Qt : Qnil; |
efdc16c9 | 4203 | |
f839df0c | 4204 | unbind_to (count1, Qnil); |
0d420e88 BG |
4205 | } |
4206 | ||
0342d8c5 RS |
4207 | /* Call after-change hooks for the inserted text, aside from the case |
4208 | of normal visiting (not with REPLACE), which is done in a new buffer | |
4209 | "before" the buffer is changed. */ | |
c8a6d68a | 4210 | if (inserted > 0 && total > 0 |
0342d8c5 | 4211 | && (NILP (visit) || !NILP (replace))) |
ce51c54c KH |
4212 | { |
4213 | signal_after_change (PT, 0, inserted); | |
4214 | update_compositions (PT, PT, CHECK_BORDER); | |
4215 | } | |
b56567b5 | 4216 | |
f8569325 DL |
4217 | if (!NILP (visit) |
4218 | && current_buffer->modtime == -1) | |
4219 | { | |
4220 | /* If visiting nonexistent file, return nil. */ | |
4221 | report_file_error ("Opening input file", Fcons (orig_filename, Qnil)); | |
d6a3cc15 RS |
4222 | } |
4223 | ||
1b978129 GM |
4224 | if (read_quit) |
4225 | Fsignal (Qquit, Qnil); | |
4226 | ||
ec7adf26 | 4227 | /* ??? Retval needs to be dealt with in all cases consistently. */ |
a1d2b64a | 4228 | if (NILP (val)) |
b1d1b865 | 4229 | val = Fcons (orig_filename, |
a1d2b64a RS |
4230 | Fcons (make_number (inserted), |
4231 | Qnil)); | |
4232 | ||
4233 | RETURN_UNGCPRO (unbind_to (count, val)); | |
570d7624 | 4234 | } |
7fded690 | 4235 | \f |
f57e2426 | 4236 | static Lisp_Object build_annotations (Lisp_Object, Lisp_Object); |
d6a3cc15 | 4237 | |
199607e4 | 4238 | static Lisp_Object |
971de7fb | 4239 | build_annotations_unwind (Lisp_Object arg) |
6fc6f94b | 4240 | { |
67fbc0cb | 4241 | Vwrite_region_annotation_buffers = arg; |
6fc6f94b RS |
4242 | return Qnil; |
4243 | } | |
4244 | ||
7c82a4a9 SM |
4245 | /* Decide the coding-system to encode the data with. */ |
4246 | ||
c934586d | 4247 | static Lisp_Object |
dd4c5104 DN |
4248 | choose_write_coding_system (Lisp_Object start, Lisp_Object end, Lisp_Object filename, |
4249 | Lisp_Object append, Lisp_Object visit, Lisp_Object lockname, | |
4250 | struct coding_system *coding) | |
7c82a4a9 SM |
4251 | { |
4252 | Lisp_Object val; | |
75421805 | 4253 | Lisp_Object eol_parent = Qnil; |
7c82a4a9 | 4254 | |
6b61353c | 4255 | if (auto_saving |
4b4deea2 TT |
4256 | && NILP (Fstring_equal (BVAR (current_buffer, filename), |
4257 | BVAR (current_buffer, auto_save_file_name)))) | |
75421805 KH |
4258 | { |
4259 | val = Qutf_8_emacs; | |
4260 | eol_parent = Qunix; | |
4261 | } | |
7c82a4a9 | 4262 | else if (!NILP (Vcoding_system_for_write)) |
42b01e1e KH |
4263 | { |
4264 | val = Vcoding_system_for_write; | |
4265 | if (coding_system_require_warning | |
4266 | && !NILP (Ffboundp (Vselect_safe_coding_system_function))) | |
4267 | /* Confirm that VAL can surely encode the current region. */ | |
4268 | val = call5 (Vselect_safe_coding_system_function, | |
4269 | start, end, Fcons (Qt, Fcons (val, Qnil)), | |
4270 | Qnil, filename); | |
4271 | } | |
7c82a4a9 SM |
4272 | else |
4273 | { | |
4274 | /* If the variable `buffer-file-coding-system' is set locally, | |
4275 | it means that the file was read with some kind of code | |
4276 | conversion or the variable is explicitly set by users. We | |
4277 | had better write it out with the same coding system even if | |
4278 | `enable-multibyte-characters' is nil. | |
4279 | ||
4280 | If it is not set locally, we anyway have to convert EOL | |
4281 | format if the default value of `buffer-file-coding-system' | |
4282 | tells that it is not Unix-like (LF only) format. */ | |
4283 | int using_default_coding = 0; | |
4284 | int force_raw_text = 0; | |
4285 | ||
4b4deea2 | 4286 | val = BVAR (current_buffer, buffer_file_coding_system); |
7c82a4a9 SM |
4287 | if (NILP (val) |
4288 | || NILP (Flocal_variable_p (Qbuffer_file_coding_system, Qnil))) | |
4289 | { | |
4290 | val = Qnil; | |
4b4deea2 | 4291 | if (NILP (BVAR (current_buffer, enable_multibyte_characters))) |
7c82a4a9 SM |
4292 | force_raw_text = 1; |
4293 | } | |
efdc16c9 | 4294 | |
7c82a4a9 SM |
4295 | if (NILP (val)) |
4296 | { | |
4297 | /* Check file-coding-system-alist. */ | |
4298 | Lisp_Object args[7], coding_systems; | |
4299 | ||
4300 | args[0] = Qwrite_region; args[1] = start; args[2] = end; | |
4301 | args[3] = filename; args[4] = append; args[5] = visit; | |
4302 | args[6] = lockname; | |
4303 | coding_systems = Ffind_operation_coding_system (7, args); | |
4304 | if (CONSP (coding_systems) && !NILP (XCDR (coding_systems))) | |
4305 | val = XCDR (coding_systems); | |
4306 | } | |
4307 | ||
c934586d | 4308 | if (NILP (val)) |
7c82a4a9 SM |
4309 | { |
4310 | /* If we still have not decided a coding system, use the | |
4311 | default value of buffer-file-coding-system. */ | |
4b4deea2 | 4312 | val = BVAR (current_buffer, buffer_file_coding_system); |
7c82a4a9 SM |
4313 | using_default_coding = 1; |
4314 | } | |
efdc16c9 | 4315 | |
db327c7e KH |
4316 | if (! NILP (val) && ! force_raw_text) |
4317 | { | |
4318 | Lisp_Object spec, attrs; | |
4319 | ||
4320 | CHECK_CODING_SYSTEM_GET_SPEC (val, spec); | |
4321 | attrs = AREF (spec, 0); | |
4322 | if (EQ (CODING_ATTR_TYPE (attrs), Qraw_text)) | |
4323 | force_raw_text = 1; | |
4324 | } | |
4325 | ||
7c82a4a9 SM |
4326 | if (!force_raw_text |
4327 | && !NILP (Ffboundp (Vselect_safe_coding_system_function))) | |
4328 | /* Confirm that VAL can surely encode the current region. */ | |
905a4276 PJ |
4329 | val = call5 (Vselect_safe_coding_system_function, |
4330 | start, end, val, Qnil, filename); | |
7c82a4a9 | 4331 | |
db327c7e KH |
4332 | /* If the decided coding-system doesn't specify end-of-line |
4333 | format, we use that of | |
4334 | `default-buffer-file-coding-system'. */ | |
c934586d | 4335 | if (! using_default_coding |
4b4deea2 | 4336 | && ! NILP (BVAR (&buffer_defaults, buffer_file_coding_system))) |
db327c7e | 4337 | val = (coding_inherit_eol_type |
4b4deea2 | 4338 | (val, BVAR (&buffer_defaults, buffer_file_coding_system))); |
7c82a4a9 | 4339 | |
db327c7e KH |
4340 | /* If we decide not to encode text, use `raw-text' or one of its |
4341 | subsidiaries. */ | |
7c82a4a9 | 4342 | if (force_raw_text) |
db327c7e | 4343 | val = raw_text_coding_system (val); |
7c82a4a9 SM |
4344 | } |
4345 | ||
75421805 | 4346 | val = coding_inherit_eol_type (val, eol_parent); |
c934586d | 4347 | setup_coding_system (val, coding); |
7c82a4a9 | 4348 | |
4b4deea2 | 4349 | if (!STRINGP (start) && !NILP (BVAR (current_buffer, selective_display))) |
7c82a4a9 | 4350 | coding->mode |= CODING_MODE_SELECTIVE_DISPLAY; |
c934586d | 4351 | return val; |
7c82a4a9 SM |
4352 | } |
4353 | ||
a7ca3326 | 4354 | DEFUN ("write-region", Fwrite_region, Swrite_region, 3, 7, |
8c1a1077 PJ |
4355 | "r\nFWrite region to file: \ni\ni\ni\np", |
4356 | doc: /* Write current region into specified file. | |
c2efea25 RS |
4357 | When called from a program, requires three arguments: |
4358 | START, END and FILENAME. START and END are normally buffer positions | |
4359 | specifying the part of the buffer to write. | |
4360 | If START is nil, that means to use the entire buffer contents. | |
4361 | If START is a string, then output that string to the file | |
4362 | instead of any buffer contents; END is ignored. | |
4363 | ||
8c1a1077 PJ |
4364 | Optional fourth argument APPEND if non-nil means |
4365 | append to existing file contents (if any). If it is an integer, | |
4366 | seek to that offset in the file before writing. | |
36e50520 | 4367 | Optional fifth argument VISIT, if t or a string, means |
8c1a1077 PJ |
4368 | set the last-save-file-modtime of buffer to this file's modtime |
4369 | and mark buffer not modified. | |
4370 | If VISIT is a string, it is a second file name; | |
4371 | the output goes to FILENAME, but the buffer is marked as visiting VISIT. | |
4372 | VISIT is also the file name to lock and unlock for clash detection. | |
4373 | If VISIT is neither t nor nil nor a string, | |
5f4e6aa9 | 4374 | that means do not display the \"Wrote file\" message. |
8c1a1077 PJ |
4375 | The optional sixth arg LOCKNAME, if non-nil, specifies the name to |
4376 | use for locking and unlocking, overriding FILENAME and VISIT. | |
4377 | The optional seventh arg MUSTBENEW, if non-nil, insists on a check | |
4378 | for an existing file with the same name. If MUSTBENEW is `excl', | |
4379 | that means to get an error if the file already exists; never overwrite. | |
4380 | If MUSTBENEW is neither nil nor `excl', that means ask for | |
4381 | confirmation before overwriting, but do go ahead and overwrite the file | |
4382 | if the user confirms. | |
8c1a1077 PJ |
4383 | |
4384 | This does code conversion according to the value of | |
4385 | `coding-system-for-write', `buffer-file-coding-system', or | |
4386 | `file-coding-system-alist', and sets the variable | |
aacd8ba1 GM |
4387 | `last-coding-system-used' to the coding system actually used. |
4388 | ||
4389 | This calls `write-region-annotate-functions' at the start, and | |
4390 | `write-region-post-annotation-function' at the end. */) | |
5842a27b | 4391 | (Lisp_Object start, Lisp_Object end, Lisp_Object filename, Lisp_Object append, Lisp_Object visit, Lisp_Object lockname, Lisp_Object mustbenew) |
570d7624 JB |
4392 | { |
4393 | register int desc; | |
4394 | int failure; | |
6bbd7a29 | 4395 | int save_errno = 0; |
5976c3fe | 4396 | const char *fn; |
570d7624 | 4397 | struct stat st; |
aed13378 | 4398 | int count = SPECPDL_INDEX (); |
6fc6f94b | 4399 | int count1; |
3eac9910 | 4400 | Lisp_Object handler; |
4ad827c5 | 4401 | Lisp_Object visit_file; |
65b7d3e7 | 4402 | Lisp_Object annotations; |
b1d1b865 | 4403 | Lisp_Object encoded_filename; |
d3a67486 SM |
4404 | int visiting = (EQ (visit, Qt) || STRINGP (visit)); |
4405 | int quietly = !NILP (visit); | |
7204a979 | 4406 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5; |
6fc6f94b | 4407 | struct buffer *given_buffer; |
6fdaa9a0 | 4408 | struct coding_system coding; |
570d7624 | 4409 | |
d3a67486 | 4410 | if (current_buffer->base_buffer && visiting) |
95385625 RS |
4411 | error ("Cannot do file visiting in an indirect buffer"); |
4412 | ||
561cb8e1 | 4413 | if (!NILP (start) && !STRINGP (start)) |
570d7624 JB |
4414 | validate_region (&start, &end); |
4415 | ||
95c1c901 | 4416 | visit_file = Qnil; |
59fac292 | 4417 | GCPRO5 (start, filename, visit, visit_file, lockname); |
b56567b5 | 4418 | |
570d7624 | 4419 | filename = Fexpand_file_name (filename, Qnil); |
de1d0127 | 4420 | |
236a12f2 | 4421 | if (!NILP (mustbenew) && !EQ (mustbenew, Qexcl)) |
b8b29dc9 | 4422 | barf_or_query_if_file_exists (filename, "overwrite", 1, 0, 1); |
de1d0127 | 4423 | |
561cb8e1 | 4424 | if (STRINGP (visit)) |
e5176bae | 4425 | visit_file = Fexpand_file_name (visit, Qnil); |
4ad827c5 RS |
4426 | else |
4427 | visit_file = filename; | |
4428 | ||
7204a979 RS |
4429 | if (NILP (lockname)) |
4430 | lockname = visit_file; | |
4431 | ||
65b7d3e7 RS |
4432 | annotations = Qnil; |
4433 | ||
32f4334d RS |
4434 | /* If the file name has special constructs in it, |
4435 | call the corresponding file handler. */ | |
49307295 | 4436 | handler = Ffind_file_name_handler (filename, Qwrite_region); |
b56ad927 | 4437 | /* If FILENAME has no handler, see if VISIT has one. */ |
93c30b5f | 4438 | if (NILP (handler) && STRINGP (visit)) |
199607e4 | 4439 | handler = Ffind_file_name_handler (visit, Qwrite_region); |
3eac9910 | 4440 | |
32f4334d RS |
4441 | if (!NILP (handler)) |
4442 | { | |
32f4334d | 4443 | Lisp_Object val; |
51cf6d37 RS |
4444 | val = call6 (handler, Qwrite_region, start, end, |
4445 | filename, append, visit); | |
32f4334d | 4446 | |
d6a3cc15 | 4447 | if (visiting) |
32f4334d | 4448 | { |
95385625 | 4449 | SAVE_MODIFF = MODIFF; |
4b4deea2 TT |
4450 | XSETFASTINT (BVAR (current_buffer, save_length), Z - BEG); |
4451 | BVAR (current_buffer, filename) = visit_file; | |
32f4334d | 4452 | } |
09121adc | 4453 | UNGCPRO; |
32f4334d RS |
4454 | return val; |
4455 | } | |
4456 | ||
4a38de71 KH |
4457 | record_unwind_protect (save_restriction_restore, save_restriction_save ()); |
4458 | ||
561cb8e1 RS |
4459 | /* Special kludge to simplify auto-saving. */ |
4460 | if (NILP (start)) | |
4461 | { | |
6b3d752c SM |
4462 | /* Do it later, so write-region-annotate-function can work differently |
4463 | if we save "the buffer" vs "a region". | |
4464 | This is useful in tar-mode. --Stef | |
2acfd7ae | 4465 | XSETFASTINT (start, BEG); |
6b3d752c | 4466 | XSETFASTINT (end, Z); */ |
4a38de71 | 4467 | Fwiden (); |
561cb8e1 RS |
4468 | } |
4469 | ||
67fbc0cb CY |
4470 | record_unwind_protect (build_annotations_unwind, |
4471 | Vwrite_region_annotation_buffers); | |
4472 | Vwrite_region_annotation_buffers = Fcons (Fcurrent_buffer (), Qnil); | |
aed13378 | 4473 | count1 = SPECPDL_INDEX (); |
6fc6f94b RS |
4474 | |
4475 | given_buffer = current_buffer; | |
bf3428a1 RS |
4476 | |
4477 | if (!STRINGP (start)) | |
236a12f2 | 4478 | { |
bf3428a1 RS |
4479 | annotations = build_annotations (start, end); |
4480 | ||
4481 | if (current_buffer != given_buffer) | |
4482 | { | |
4483 | XSETFASTINT (start, BEGV); | |
4484 | XSETFASTINT (end, ZV); | |
4485 | } | |
236a12f2 SM |
4486 | } |
4487 | ||
6b3d752c SM |
4488 | if (NILP (start)) |
4489 | { | |
4490 | XSETFASTINT (start, BEGV); | |
4491 | XSETFASTINT (end, ZV); | |
4492 | } | |
4493 | ||
236a12f2 SM |
4494 | UNGCPRO; |
4495 | ||
4496 | GCPRO5 (start, filename, annotations, visit_file, lockname); | |
4497 | ||
59fac292 SM |
4498 | /* Decide the coding-system to encode the data with. |
4499 | We used to make this choice before calling build_annotations, but that | |
4500 | leads to problems when a write-annotate-function takes care of | |
4501 | unsavable chars (as was the case with X-Symbol). */ | |
c934586d KH |
4502 | Vlast_coding_system_used |
4503 | = choose_write_coding_system (start, end, filename, | |
4504 | append, visit, lockname, &coding); | |
d6a3cc15 | 4505 | |
570d7624 JB |
4506 | #ifdef CLASH_DETECTION |
4507 | if (!auto_saving) | |
67fbc0cb | 4508 | lock_file (lockname); |
570d7624 JB |
4509 | #endif /* CLASH_DETECTION */ |
4510 | ||
b1d1b865 RS |
4511 | encoded_filename = ENCODE_FILE (filename); |
4512 | ||
5976c3fe | 4513 | fn = SSDATA (encoded_filename); |
570d7624 | 4514 | desc = -1; |
265a9e55 | 4515 | if (!NILP (append)) |
5e570b75 | 4516 | #ifdef DOS_NT |
05c65251 | 4517 | desc = emacs_open (fn, O_WRONLY | O_BINARY, 0); |
5e570b75 | 4518 | #else /* not DOS_NT */ |
68c45bf0 | 4519 | desc = emacs_open (fn, O_WRONLY, 0); |
5e570b75 | 4520 | #endif /* not DOS_NT */ |
570d7624 | 4521 | |
b1d1b865 | 4522 | if (desc < 0 && (NILP (append) || errno == ENOENT)) |
5e570b75 | 4523 | #ifdef DOS_NT |
68c45bf0 | 4524 | desc = emacs_open (fn, |
05c65251 | 4525 | O_WRONLY | O_CREAT | O_BINARY |
95522746 | 4526 | | (EQ (mustbenew, Qexcl) ? O_EXCL : O_TRUNC), |
68c45bf0 | 4527 | S_IREAD | S_IWRITE); |
5e570b75 | 4528 | #else /* not DOS_NT */ |
68c45bf0 | 4529 | desc = emacs_open (fn, O_WRONLY | O_TRUNC | O_CREAT |
7c752c80 | 4530 | | (EQ (mustbenew, Qexcl) ? O_EXCL : 0), |
68c45bf0 | 4531 | auto_saving ? auto_save_mode_bits : 0666); |
5e570b75 | 4532 | #endif /* not DOS_NT */ |
570d7624 JB |
4533 | |
4534 | if (desc < 0) | |
4535 | { | |
4536 | #ifdef CLASH_DETECTION | |
4537 | save_errno = errno; | |
7204a979 | 4538 | if (!auto_saving) unlock_file (lockname); |
570d7624 JB |
4539 | errno = save_errno; |
4540 | #endif /* CLASH_DETECTION */ | |
43fb7d9a | 4541 | UNGCPRO; |
570d7624 JB |
4542 | report_file_error ("Opening output file", Fcons (filename, Qnil)); |
4543 | } | |
4544 | ||
4545 | record_unwind_protect (close_file_unwind, make_number (desc)); | |
4546 | ||
c1c4693e | 4547 | if (!NILP (append) && !NILP (Ffile_regular_p (filename))) |
43fb7d9a DL |
4548 | { |
4549 | long ret; | |
efdc16c9 | 4550 | |
43fb7d9a DL |
4551 | if (NUMBERP (append)) |
4552 | ret = lseek (desc, XINT (append), 1); | |
4553 | else | |
4554 | ret = lseek (desc, 0, 2); | |
4555 | if (ret < 0) | |
4556 | { | |
570d7624 | 4557 | #ifdef CLASH_DETECTION |
43fb7d9a | 4558 | if (!auto_saving) unlock_file (lockname); |
570d7624 | 4559 | #endif /* CLASH_DETECTION */ |
43fb7d9a DL |
4560 | UNGCPRO; |
4561 | report_file_error ("Lseek error", Fcons (filename, Qnil)); | |
4562 | } | |
4563 | } | |
efdc16c9 | 4564 | |
43fb7d9a | 4565 | UNGCPRO; |
570d7624 | 4566 | |
570d7624 JB |
4567 | failure = 0; |
4568 | immediate_quit = 1; | |
4569 | ||
561cb8e1 | 4570 | if (STRINGP (start)) |
570d7624 | 4571 | { |
d5db4077 | 4572 | failure = 0 > a_write (desc, start, 0, SCHARS (start), |
ce51c54c | 4573 | &annotations, &coding); |
570d7624 JB |
4574 | save_errno = errno; |
4575 | } | |
4576 | else if (XINT (start) != XINT (end)) | |
4577 | { | |
db327c7e KH |
4578 | failure = 0 > a_write (desc, Qnil, |
4579 | XINT (start), XINT (end) - XINT (start), | |
4580 | &annotations, &coding); | |
4581 | save_errno = errno; | |
69f6e679 RS |
4582 | } |
4583 | else | |
4584 | { | |
4585 | /* If file was empty, still need to write the annotations */ | |
c8a6d68a | 4586 | coding.mode |= CODING_MODE_LAST_BLOCK; |
ce51c54c | 4587 | failure = 0 > a_write (desc, Qnil, XINT (end), 0, &annotations, &coding); |
6fdaa9a0 KH |
4588 | save_errno = errno; |
4589 | } | |
4590 | ||
c8a6d68a KH |
4591 | if (CODING_REQUIRE_FLUSHING (&coding) |
4592 | && !(coding.mode & CODING_MODE_LAST_BLOCK) | |
1354debd | 4593 | && ! failure) |
6fdaa9a0 KH |
4594 | { |
4595 | /* We have to flush out a data. */ | |
c8a6d68a | 4596 | coding.mode |= CODING_MODE_LAST_BLOCK; |
db327c7e | 4597 | failure = 0 > e_write (desc, Qnil, 1, 1, &coding); |
69f6e679 | 4598 | save_errno = errno; |
570d7624 JB |
4599 | } |
4600 | ||
4601 | immediate_quit = 0; | |
4602 | ||
6e23c83e | 4603 | #ifdef HAVE_FSYNC |
570d7624 JB |
4604 | /* Note fsync appears to change the modtime on BSD4.2 (both vax and sun). |
4605 | Disk full in NFS may be reported here. */ | |
1daffa1c RS |
4606 | /* mib says that closing the file will try to write as fast as NFS can do |
4607 | it, and that means the fsync here is not crucial for autosave files. */ | |
ccf61795 | 4608 | if (!auto_saving && !write_region_inhibit_fsync && fsync (desc) < 0) |
cb33c142 | 4609 | { |
6cff77fd AS |
4610 | /* If fsync fails with EINTR, don't treat that as serious. Also |
4611 | ignore EINVAL which happens when fsync is not supported on this | |
4612 | file. */ | |
4613 | if (errno != EINTR && errno != EINVAL) | |
cb33c142 KH |
4614 | failure = 1, save_errno = errno; |
4615 | } | |
570d7624 JB |
4616 | #endif |
4617 | ||
570d7624 | 4618 | /* NFS can report a write failure now. */ |
68c45bf0 | 4619 | if (emacs_close (desc) < 0) |
570d7624 JB |
4620 | failure = 1, save_errno = errno; |
4621 | ||
570d7624 | 4622 | stat (fn, &st); |
67fbc0cb | 4623 | |
6fc6f94b RS |
4624 | /* Discard the unwind protect for close_file_unwind. */ |
4625 | specpdl_ptr = specpdl + count1; | |
67fbc0cb CY |
4626 | |
4627 | /* Call write-region-post-annotation-function. */ | |
294fa707 | 4628 | while (CONSP (Vwrite_region_annotation_buffers)) |
67fbc0cb CY |
4629 | { |
4630 | Lisp_Object buf = XCAR (Vwrite_region_annotation_buffers); | |
4631 | if (!NILP (Fbuffer_live_p (buf))) | |
4632 | { | |
4633 | Fset_buffer (buf); | |
4634 | if (FUNCTIONP (Vwrite_region_post_annotation_function)) | |
4635 | call0 (Vwrite_region_post_annotation_function); | |
4636 | } | |
4637 | Vwrite_region_annotation_buffers | |
4638 | = XCDR (Vwrite_region_annotation_buffers); | |
4639 | } | |
4640 | ||
4641 | unbind_to (count, Qnil); | |
570d7624 JB |
4642 | |
4643 | #ifdef CLASH_DETECTION | |
4644 | if (!auto_saving) | |
7204a979 | 4645 | unlock_file (lockname); |
570d7624 JB |
4646 | #endif /* CLASH_DETECTION */ |
4647 | ||
4648 | /* Do this before reporting IO error | |
4649 | to avoid a "file has changed on disk" warning on | |
4650 | next attempt to save. */ | |
d6a3cc15 | 4651 | if (visiting) |
58b963f7 SM |
4652 | { |
4653 | current_buffer->modtime = st.st_mtime; | |
4654 | current_buffer->modtime_size = st.st_size; | |
4655 | } | |
570d7624 JB |
4656 | |
4657 | if (failure) | |
d5db4077 | 4658 | error ("IO error writing %s: %s", SDATA (filename), |
68c45bf0 | 4659 | emacs_strerror (save_errno)); |
570d7624 | 4660 | |
d6a3cc15 | 4661 | if (visiting) |
570d7624 | 4662 | { |
95385625 | 4663 | SAVE_MODIFF = MODIFF; |
4b4deea2 TT |
4664 | XSETFASTINT (BVAR (current_buffer, save_length), Z - BEG); |
4665 | BVAR (current_buffer, filename) = visit_file; | |
f4226e89 | 4666 | update_mode_lines++; |
570d7624 | 4667 | } |
d6a3cc15 | 4668 | else if (quietly) |
6b61353c KH |
4669 | { |
4670 | if (auto_saving | |
4b4deea2 TT |
4671 | && ! NILP (Fstring_equal (BVAR (current_buffer, filename), |
4672 | BVAR (current_buffer, auto_save_file_name)))) | |
6b61353c KH |
4673 | SAVE_MODIFF = MODIFF; |
4674 | ||
4675 | return Qnil; | |
4676 | } | |
570d7624 JB |
4677 | |
4678 | if (!auto_saving) | |
6b61353c | 4679 | message_with_string ((INTEGERP (append) |
0c328a0e RS |
4680 | ? "Updated %s" |
4681 | : ! NILP (append) | |
4682 | ? "Added to %s" | |
4683 | : "Wrote %s"), | |
4684 | visit_file, 1); | |
570d7624 JB |
4685 | |
4686 | return Qnil; | |
4687 | } | |
ec7adf26 | 4688 | \f |
dd4c5104 | 4689 | Lisp_Object merge (Lisp_Object, Lisp_Object, Lisp_Object); |
d6a3cc15 RS |
4690 | |
4691 | DEFUN ("car-less-than-car", Fcar_less_than_car, Scar_less_than_car, 2, 2, 0, | |
8c1a1077 | 4692 | doc: /* Return t if (car A) is numerically less than (car B). */) |
5842a27b | 4693 | (Lisp_Object a, Lisp_Object b) |
d6a3cc15 RS |
4694 | { |
4695 | return Flss (Fcar (a), Fcar (b)); | |
4696 | } | |
4697 | ||
4698 | /* Build the complete list of annotations appropriate for writing out | |
4699 | the text between START and END, by calling all the functions in | |
6fc6f94b RS |
4700 | write-region-annotate-functions and merging the lists they return. |
4701 | If one of these functions switches to a different buffer, we assume | |
4702 | that buffer contains altered text. Therefore, the caller must | |
4703 | make sure to restore the current buffer in all cases, | |
4704 | as save-excursion would do. */ | |
d6a3cc15 RS |
4705 | |
4706 | static Lisp_Object | |
971de7fb | 4707 | build_annotations (Lisp_Object start, Lisp_Object end) |
d6a3cc15 RS |
4708 | { |
4709 | Lisp_Object annotations; | |
4710 | Lisp_Object p, res; | |
4711 | struct gcpro gcpro1, gcpro2; | |
0a20b684 | 4712 | Lisp_Object original_buffer; |
bd235610 | 4713 | int i, used_global = 0; |
0a20b684 RS |
4714 | |
4715 | XSETBUFFER (original_buffer, current_buffer); | |
d6a3cc15 RS |
4716 | |
4717 | annotations = Qnil; | |
4718 | p = Vwrite_region_annotate_functions; | |
4719 | GCPRO2 (annotations, p); | |
28c3eb5a | 4720 | while (CONSP (p)) |
d6a3cc15 | 4721 | { |
6fc6f94b | 4722 | struct buffer *given_buffer = current_buffer; |
bd235610 SM |
4723 | if (EQ (Qt, XCAR (p)) && !used_global) |
4724 | { /* Use the global value of the hook. */ | |
4725 | Lisp_Object arg[2]; | |
4726 | used_global = 1; | |
4727 | arg[0] = Fdefault_value (Qwrite_region_annotate_functions); | |
4728 | arg[1] = XCDR (p); | |
4729 | p = Fappend (2, arg); | |
4730 | continue; | |
4731 | } | |
6fc6f94b | 4732 | Vwrite_region_annotations_so_far = annotations; |
28c3eb5a | 4733 | res = call2 (XCAR (p), start, end); |
6fc6f94b RS |
4734 | /* If the function makes a different buffer current, |
4735 | assume that means this buffer contains altered text to be output. | |
4736 | Reset START and END from the buffer bounds | |
4737 | and discard all previous annotations because they should have | |
4738 | been dealt with by this function. */ | |
4739 | if (current_buffer != given_buffer) | |
4740 | { | |
67fbc0cb CY |
4741 | Vwrite_region_annotation_buffers |
4742 | = Fcons (Fcurrent_buffer (), | |
4743 | Vwrite_region_annotation_buffers); | |
3cf29f61 RS |
4744 | XSETFASTINT (start, BEGV); |
4745 | XSETFASTINT (end, ZV); | |
6fc6f94b RS |
4746 | annotations = Qnil; |
4747 | } | |
d6a3cc15 RS |
4748 | Flength (res); /* Check basic validity of return value */ |
4749 | annotations = merge (annotations, res, Qcar_less_than_car); | |
28c3eb5a | 4750 | p = XCDR (p); |
d6a3cc15 | 4751 | } |
0d420e88 BG |
4752 | |
4753 | /* Now do the same for annotation functions implied by the file-format */ | |
4b4deea2 TT |
4754 | if (auto_saving && (!EQ (BVAR (current_buffer, auto_save_file_format), Qt))) |
4755 | p = BVAR (current_buffer, auto_save_file_format); | |
0d420e88 | 4756 | else |
4b4deea2 | 4757 | p = BVAR (current_buffer, file_format); |
28c3eb5a | 4758 | for (i = 0; CONSP (p); p = XCDR (p), ++i) |
0d420e88 BG |
4759 | { |
4760 | struct buffer *given_buffer = current_buffer; | |
efdc16c9 | 4761 | |
0d420e88 | 4762 | Vwrite_region_annotations_so_far = annotations; |
532ed661 GM |
4763 | |
4764 | /* Value is either a list of annotations or nil if the function | |
4765 | has written annotations to a temporary buffer, which is now | |
4766 | current. */ | |
28c3eb5a | 4767 | res = call5 (Qformat_annotate_function, XCAR (p), start, end, |
532ed661 | 4768 | original_buffer, make_number (i)); |
0d420e88 BG |
4769 | if (current_buffer != given_buffer) |
4770 | { | |
3cf29f61 RS |
4771 | XSETFASTINT (start, BEGV); |
4772 | XSETFASTINT (end, ZV); | |
0d420e88 BG |
4773 | annotations = Qnil; |
4774 | } | |
efdc16c9 | 4775 | |
532ed661 GM |
4776 | if (CONSP (res)) |
4777 | annotations = merge (annotations, res, Qcar_less_than_car); | |
0d420e88 | 4778 | } |
6fdaa9a0 | 4779 | |
236a12f2 SM |
4780 | UNGCPRO; |
4781 | return annotations; | |
4782 | } | |
4783 | ||
ec7adf26 | 4784 | \f |
ce51c54c KH |
4785 | /* Write to descriptor DESC the NCHARS chars starting at POS of STRING. |
4786 | If STRING is nil, POS is the character position in the current buffer. | |
d6a3cc15 | 4787 | Intersperse with them the annotations from *ANNOT |
ce51c54c | 4788 | which fall within the range of POS to POS + NCHARS, |
d6a3cc15 RS |
4789 | each at its appropriate position. |
4790 | ||
ec7adf26 RS |
4791 | We modify *ANNOT by discarding elements as we use them up. |
4792 | ||
d6a3cc15 RS |
4793 | The return value is negative in case of system call failure. */ |
4794 | ||
ec7adf26 | 4795 | static int |
8a2cbd72 EZ |
4796 | a_write (int desc, Lisp_Object string, EMACS_INT pos, |
4797 | register EMACS_INT nchars, Lisp_Object *annot, | |
4798 | struct coding_system *coding) | |
d6a3cc15 RS |
4799 | { |
4800 | Lisp_Object tem; | |
8a2cbd72 EZ |
4801 | EMACS_INT nextpos; |
4802 | EMACS_INT lastpos = pos + nchars; | |
d6a3cc15 | 4803 | |
eb15aa18 | 4804 | while (NILP (*annot) || CONSP (*annot)) |
d6a3cc15 RS |
4805 | { |
4806 | tem = Fcar_safe (Fcar (*annot)); | |
ce51c54c | 4807 | nextpos = pos - 1; |
ec7adf26 | 4808 | if (INTEGERP (tem)) |
ce51c54c | 4809 | nextpos = XFASTINT (tem); |
ec7adf26 RS |
4810 | |
4811 | /* If there are no more annotations in this range, | |
4812 | output the rest of the range all at once. */ | |
ce51c54c KH |
4813 | if (! (nextpos >= pos && nextpos <= lastpos)) |
4814 | return e_write (desc, string, pos, lastpos, coding); | |
ec7adf26 RS |
4815 | |
4816 | /* Output buffer text up to the next annotation's position. */ | |
ce51c54c | 4817 | if (nextpos > pos) |
d6a3cc15 | 4818 | { |
055a28c9 | 4819 | if (0 > e_write (desc, string, pos, nextpos, coding)) |
d6a3cc15 | 4820 | return -1; |
ce51c54c | 4821 | pos = nextpos; |
d6a3cc15 | 4822 | } |
ec7adf26 | 4823 | /* Output the annotation. */ |
d6a3cc15 RS |
4824 | tem = Fcdr (Fcar (*annot)); |
4825 | if (STRINGP (tem)) | |
4826 | { | |
d5db4077 | 4827 | if (0 > e_write (desc, tem, 0, SCHARS (tem), coding)) |
d6a3cc15 RS |
4828 | return -1; |
4829 | } | |
4830 | *annot = Fcdr (*annot); | |
4831 | } | |
dfcf069d | 4832 | return 0; |
d6a3cc15 RS |
4833 | } |
4834 | ||
6fdaa9a0 | 4835 | |
ce51c54c KH |
4836 | /* Write text in the range START and END into descriptor DESC, |
4837 | encoding them with coding system CODING. If STRING is nil, START | |
4838 | and END are character positions of the current buffer, else they | |
4839 | are indexes to the string STRING. */ | |
ec7adf26 RS |
4840 | |
4841 | static int | |
8a2cbd72 EZ |
4842 | e_write (int desc, Lisp_Object string, EMACS_INT start, EMACS_INT end, |
4843 | struct coding_system *coding) | |
570d7624 | 4844 | { |
ce51c54c KH |
4845 | if (STRINGP (string)) |
4846 | { | |
db327c7e | 4847 | start = 0; |
8f924df7 | 4848 | end = SCHARS (string); |
ce51c54c | 4849 | } |
570d7624 | 4850 | |
6fdaa9a0 KH |
4851 | /* We used to have a code for handling selective display here. But, |
4852 | now it is handled within encode_coding. */ | |
01ca97a2 KH |
4853 | |
4854 | while (start < end) | |
570d7624 | 4855 | { |
01ca97a2 | 4856 | if (STRINGP (string)) |
6ad568dd | 4857 | { |
01ca97a2 KH |
4858 | coding->src_multibyte = SCHARS (string) < SBYTES (string); |
4859 | if (CODING_REQUIRE_ENCODING (coding)) | |
4860 | { | |
4861 | encode_coding_object (coding, string, | |
4862 | start, string_char_to_byte (string, start), | |
4863 | end, string_char_to_byte (string, end), Qt); | |
4864 | } | |
4865 | else | |
4866 | { | |
4867 | coding->dst_object = string; | |
4868 | coding->consumed_char = SCHARS (string); | |
4869 | coding->produced = SBYTES (string); | |
4870 | } | |
6ad568dd | 4871 | } |
db327c7e | 4872 | else |
6ad568dd | 4873 | { |
8a2cbd72 EZ |
4874 | EMACS_INT start_byte = CHAR_TO_BYTE (start); |
4875 | EMACS_INT end_byte = CHAR_TO_BYTE (end); | |
b4132433 | 4876 | |
01ca97a2 KH |
4877 | coding->src_multibyte = (end - start) < (end_byte - start_byte); |
4878 | if (CODING_REQUIRE_ENCODING (coding)) | |
4879 | { | |
4880 | encode_coding_object (coding, Fcurrent_buffer (), | |
4881 | start, start_byte, end, end_byte, Qt); | |
4882 | } | |
4883 | else | |
4884 | { | |
4885 | coding->dst_object = Qnil; | |
4886 | coding->dst_pos_byte = start_byte; | |
4887 | if (start >= GPT || end <= GPT) | |
4888 | { | |
4889 | coding->consumed_char = end - start; | |
4890 | coding->produced = end_byte - start_byte; | |
4891 | } | |
4892 | else | |
4893 | { | |
4894 | coding->consumed_char = GPT - start; | |
4895 | coding->produced = GPT_BYTE - start_byte; | |
4896 | } | |
4897 | } | |
c185d744 | 4898 | } |
01ca97a2 KH |
4899 | |
4900 | if (coding->produced > 0) | |
c185d744 | 4901 | { |
01ca97a2 KH |
4902 | coding->produced -= |
4903 | emacs_write (desc, | |
4904 | STRINGP (coding->dst_object) | |
42a5b22f PE |
4905 | ? SSDATA (coding->dst_object) |
4906 | : (char *) BYTE_POS_ADDR (coding->dst_pos_byte), | |
01ca97a2 KH |
4907 | coding->produced); |
4908 | ||
4909 | if (coding->produced) | |
4910 | return -1; | |
570d7624 | 4911 | } |
01ca97a2 | 4912 | start += coding->consumed_char; |
c185d744 KH |
4913 | } |
4914 | ||
4915 | return 0; | |
570d7624 | 4916 | } |
ec7adf26 | 4917 | \f |
a7ca3326 | 4918 | DEFUN ("verify-visited-file-modtime", Fverify_visited_file_modtime, |
ec1b9b17 | 4919 | Sverify_visited_file_modtime, 0, 1, 0, |
8c1a1077 | 4920 | doc: /* Return t if last mod time of BUF's visited file matches what BUF records. |
6b61353c | 4921 | This means that the file has not been changed since it was visited or saved. |
ec1b9b17 | 4922 | If BUF is omitted or nil, it defaults to the current buffer. |
6b61353c | 4923 | See Info node `(elisp)Modification Time' for more details. */) |
5842a27b | 4924 | (Lisp_Object buf) |
570d7624 JB |
4925 | { |
4926 | struct buffer *b; | |
4927 | struct stat st; | |
32f4334d | 4928 | Lisp_Object handler; |
b1d1b865 | 4929 | Lisp_Object filename; |
570d7624 | 4930 | |
ec1b9b17 GM |
4931 | if (NILP (buf)) |
4932 | b = current_buffer; | |
4933 | else | |
4934 | { | |
4935 | CHECK_BUFFER (buf); | |
4936 | b = XBUFFER (buf); | |
4937 | } | |
570d7624 | 4938 | |
4b4deea2 | 4939 | if (!STRINGP (BVAR (b, filename))) return Qt; |
570d7624 JB |
4940 | if (b->modtime == 0) return Qt; |
4941 | ||
32f4334d RS |
4942 | /* If the file name has special constructs in it, |
4943 | call the corresponding file handler. */ | |
4b4deea2 | 4944 | handler = Ffind_file_name_handler (BVAR (b, filename), |
49307295 | 4945 | Qverify_visited_file_modtime); |
32f4334d | 4946 | if (!NILP (handler)) |
09121adc | 4947 | return call2 (handler, Qverify_visited_file_modtime, buf); |
32f4334d | 4948 | |
4b4deea2 | 4949 | filename = ENCODE_FILE (BVAR (b, filename)); |
b1d1b865 | 4950 | |
42a5b22f | 4951 | if (stat (SSDATA (filename), &st) < 0) |
570d7624 JB |
4952 | { |
4953 | /* If the file doesn't exist now and didn't exist before, | |
4954 | we say that it isn't modified, provided the error is a tame one. */ | |
4955 | if (errno == ENOENT || errno == EACCES || errno == ENOTDIR) | |
4956 | st.st_mtime = -1; | |
4957 | else | |
4958 | st.st_mtime = 0; | |
4959 | } | |
58b963f7 SM |
4960 | if ((st.st_mtime == b->modtime |
4961 | /* If both are positive, accept them if they are off by one second. */ | |
4962 | || (st.st_mtime > 0 && b->modtime > 0 | |
7f9bbdbb | 4963 | && (st.st_mtime - 1 == b->modtime |
58b963f7 SM |
4964 | || st.st_mtime == b->modtime - 1))) |
4965 | && (st.st_size == b->modtime_size | |
4966 | || b->modtime_size < 0)) | |
570d7624 JB |
4967 | return Qt; |
4968 | return Qnil; | |
4969 | } | |
4970 | ||
4971 | DEFUN ("clear-visited-file-modtime", Fclear_visited_file_modtime, | |
8c1a1077 PJ |
4972 | Sclear_visited_file_modtime, 0, 0, 0, |
4973 | doc: /* Clear out records of last mod time of visited file. | |
4974 | Next attempt to save will certainly not complain of a discrepancy. */) | |
5842a27b | 4975 | (void) |
570d7624 JB |
4976 | { |
4977 | current_buffer->modtime = 0; | |
58b963f7 | 4978 | current_buffer->modtime_size = -1; |
570d7624 JB |
4979 | return Qnil; |
4980 | } | |
4981 | ||
f5d5eccf | 4982 | DEFUN ("visited-file-modtime", Fvisited_file_modtime, |
8c1a1077 PJ |
4983 | Svisited_file_modtime, 0, 0, 0, |
4984 | doc: /* Return the current buffer's recorded visited file modification time. | |
e5fcddc8 | 4985 | The value is a list of the form (HIGH LOW), like the time values |
6b61353c KH |
4986 | that `file-attributes' returns. If the current buffer has no recorded |
4987 | file modification time, this function returns 0. | |
4988 | See Info node `(elisp)Modification Time' for more details. */) | |
5842a27b | 4989 | (void) |
f5d5eccf | 4990 | { |
73ff9d42 RS |
4991 | if (! current_buffer->modtime) |
4992 | return make_number (0); | |
84acfcf0 | 4993 | return make_time (current_buffer->modtime); |
f5d5eccf RS |
4994 | } |
4995 | ||
570d7624 | 4996 | DEFUN ("set-visited-file-modtime", Fset_visited_file_modtime, |
8c1a1077 PJ |
4997 | Sset_visited_file_modtime, 0, 1, 0, |
4998 | doc: /* Update buffer's recorded modification time from the visited file's time. | |
4999 | Useful if the buffer was not read from the file normally | |
5000 | or if the file itself has been changed for some known benign reason. | |
5001 | An argument specifies the modification time value to use | |
5002 | \(instead of that of the visited file), in the form of a list | |
5003 | \(HIGH . LOW) or (HIGH LOW). */) | |
5842a27b | 5004 | (Lisp_Object time_list) |
570d7624 | 5005 | { |
f5d5eccf | 5006 | if (!NILP (time_list)) |
58b963f7 SM |
5007 | { |
5008 | current_buffer->modtime = cons_to_long (time_list); | |
5009 | current_buffer->modtime_size = -1; | |
5010 | } | |
f5d5eccf RS |
5011 | else |
5012 | { | |
5013 | register Lisp_Object filename; | |
5014 | struct stat st; | |
5015 | Lisp_Object handler; | |
570d7624 | 5016 | |
4b4deea2 | 5017 | filename = Fexpand_file_name (BVAR (current_buffer, filename), Qnil); |
32f4334d | 5018 | |
f5d5eccf RS |
5019 | /* If the file name has special constructs in it, |
5020 | call the corresponding file handler. */ | |
49307295 | 5021 | handler = Ffind_file_name_handler (filename, Qset_visited_file_modtime); |
f5d5eccf | 5022 | if (!NILP (handler)) |
caf3c431 | 5023 | /* The handler can find the file name the same way we did. */ |
76c881b0 | 5024 | return call2 (handler, Qset_visited_file_modtime, Qnil); |
b1d1b865 RS |
5025 | |
5026 | filename = ENCODE_FILE (filename); | |
5027 | ||
42a5b22f | 5028 | if (stat (SSDATA (filename), &st) >= 0) |
58b963f7 SM |
5029 | { |
5030 | current_buffer->modtime = st.st_mtime; | |
5031 | current_buffer->modtime_size = st.st_size; | |
5032 | } | |
f5d5eccf | 5033 | } |
570d7624 JB |
5034 | |
5035 | return Qnil; | |
5036 | } | |
5037 | \f | |
f14b7e14 | 5038 | static Lisp_Object |
f839df0c | 5039 | auto_save_error (Lisp_Object error_val) |
570d7624 | 5040 | { |
d7f31e22 GM |
5041 | Lisp_Object args[3], msg; |
5042 | int i, nbytes; | |
5043 | struct gcpro gcpro1; | |
dfc22242 KS |
5044 | char *msgbuf; |
5045 | USE_SAFE_ALLOCA; | |
efdc16c9 | 5046 | |
ca730bf0 CY |
5047 | auto_save_error_occurred = 1; |
5048 | ||
385ed61f | 5049 | ring_bell (XFRAME (selected_frame)); |
efdc16c9 | 5050 | |
d7f31e22 | 5051 | args[0] = build_string ("Auto-saving %s: %s"); |
4b4deea2 | 5052 | args[1] = BVAR (current_buffer, name); |
f839df0c | 5053 | args[2] = Ferror_message_string (error_val); |
d7f31e22 GM |
5054 | msg = Fformat (3, args); |
5055 | GCPRO1 (msg); | |
d5db4077 | 5056 | nbytes = SBYTES (msg); |
dfc22242 | 5057 | SAFE_ALLOCA (msgbuf, char *, nbytes); |
72af86bd | 5058 | memcpy (msgbuf, SDATA (msg), nbytes); |
d7f31e22 GM |
5059 | |
5060 | for (i = 0; i < 3; ++i) | |
5061 | { | |
5062 | if (i == 0) | |
dfc22242 | 5063 | message2 (msgbuf, nbytes, STRING_MULTIBYTE (msg)); |
d7f31e22 | 5064 | else |
dfc22242 | 5065 | message2_nolog (msgbuf, nbytes, STRING_MULTIBYTE (msg)); |
d7f31e22 GM |
5066 | Fsleep_for (make_number (1), Qnil); |
5067 | } | |
5068 | ||
e01f7773 | 5069 | SAFE_FREE (); |
d7f31e22 | 5070 | UNGCPRO; |
570d7624 JB |
5071 | return Qnil; |
5072 | } | |
5073 | ||
f14b7e14 | 5074 | static Lisp_Object |
971de7fb | 5075 | auto_save_1 (void) |
570d7624 | 5076 | { |
570d7624 | 5077 | struct stat st; |
d4a42098 KS |
5078 | Lisp_Object modes; |
5079 | ||
5080 | auto_save_mode_bits = 0666; | |
570d7624 JB |
5081 | |
5082 | /* Get visited file's mode to become the auto save file's mode. */ | |
4b4deea2 | 5083 | if (! NILP (BVAR (current_buffer, filename))) |
d4a42098 | 5084 | { |
4b4deea2 | 5085 | if (stat (SSDATA (BVAR (current_buffer, filename)), &st) >= 0) |
d4a42098 KS |
5086 | /* But make sure we can overwrite it later! */ |
5087 | auto_save_mode_bits = st.st_mode | 0600; | |
4b4deea2 | 5088 | else if ((modes = Ffile_modes (BVAR (current_buffer, filename)), |
d4a42098 KS |
5089 | INTEGERP (modes))) |
5090 | /* Remote files don't cooperate with stat. */ | |
5091 | auto_save_mode_bits = XINT (modes) | 0600; | |
5092 | } | |
570d7624 JB |
5093 | |
5094 | return | |
4b4deea2 | 5095 | Fwrite_region (Qnil, Qnil, BVAR (current_buffer, auto_save_file_name), Qnil, |
699b53bc CY |
5096 | NILP (Vauto_save_visited_file_name) ? Qlambda : Qt, |
5097 | Qnil, Qnil); | |
570d7624 JB |
5098 | } |
5099 | ||
e54d3b5d | 5100 | static Lisp_Object |
971de7fb | 5101 | do_auto_save_unwind (Lisp_Object arg) /* used as unwind-protect function */ |
410ed5c3 | 5102 | |
e54d3b5d | 5103 | { |
fff7e982 | 5104 | FILE *stream = (FILE *) XSAVE_VALUE (arg)->pointer; |
3be3c08e | 5105 | auto_saving = 0; |
fff7e982 | 5106 | if (stream != NULL) |
aab12958 YM |
5107 | { |
5108 | BLOCK_INPUT; | |
5109 | fclose (stream); | |
5110 | UNBLOCK_INPUT; | |
5111 | } | |
e54d3b5d RS |
5112 | return Qnil; |
5113 | } | |
5114 | ||
a8c828be | 5115 | static Lisp_Object |
971de7fb | 5116 | do_auto_save_unwind_1 (Lisp_Object value) /* used as unwind-protect function */ |
410ed5c3 | 5117 | |
a8c828be RS |
5118 | { |
5119 | minibuffer_auto_raise = XINT (value); | |
5120 | return Qnil; | |
5121 | } | |
5122 | ||
5794dd61 | 5123 | static Lisp_Object |
971de7fb | 5124 | do_auto_save_make_dir (Lisp_Object dir) |
5794dd61 | 5125 | { |
26816cbf SG |
5126 | Lisp_Object mode; |
5127 | ||
5128 | call2 (Qmake_directory, dir, Qt); | |
5129 | XSETFASTINT (mode, 0700); | |
5130 | return Fset_file_modes (dir, mode); | |
5794dd61 RS |
5131 | } |
5132 | ||
5133 | static Lisp_Object | |
971de7fb | 5134 | do_auto_save_eh (Lisp_Object ignore) |
5794dd61 RS |
5135 | { |
5136 | return Qnil; | |
5137 | } | |
5138 | ||
a7ca3326 | 5139 | DEFUN ("do-auto-save", Fdo_auto_save, Sdo_auto_save, 0, 2, "", |
8c1a1077 PJ |
5140 | doc: /* Auto-save all buffers that need it. |
5141 | This is all buffers that have auto-saving enabled | |
5142 | and are changed since last auto-saved. | |
5143 | Auto-saving writes the buffer into a file | |
5144 | so that your editing is not lost if the system crashes. | |
5145 | This file is not the file you visited; that changes only when you save. | |
5146 | Normally we run the normal hook `auto-save-hook' before saving. | |
5147 | ||
5148 | A non-nil NO-MESSAGE argument means do not print any message if successful. | |
5149 | A non-nil CURRENT-ONLY argument means save only current buffer. */) | |
5842a27b | 5150 | (Lisp_Object no_message, Lisp_Object current_only) |
570d7624 JB |
5151 | { |
5152 | struct buffer *old = current_buffer, *b; | |
dee091a3 | 5153 | Lisp_Object tail, buf, hook; |
570d7624 | 5154 | int auto_saved = 0; |
f14b1c68 | 5155 | int do_handled_files; |
ff4c9993 | 5156 | Lisp_Object oquit; |
fff7e982 | 5157 | FILE *stream = NULL; |
aed13378 | 5158 | int count = SPECPDL_INDEX (); |
a8c828be | 5159 | int orig_minibuffer_auto_raise = minibuffer_auto_raise; |
5794dd61 | 5160 | int old_message_p = 0; |
d57563b6 | 5161 | struct gcpro gcpro1, gcpro2; |
38da540d RS |
5162 | |
5163 | if (max_specpdl_size < specpdl_size + 40) | |
5164 | max_specpdl_size = specpdl_size + 40; | |
5165 | ||
5166 | if (minibuf_level) | |
5167 | no_message = Qt; | |
5168 | ||
5794dd61 RS |
5169 | if (NILP (no_message)) |
5170 | { | |
5171 | old_message_p = push_message (); | |
5172 | record_unwind_protect (pop_message_unwind, Qnil); | |
5173 | } | |
efdc16c9 | 5174 | |
ff4c9993 RS |
5175 | /* Ordinarily don't quit within this function, |
5176 | but don't make it impossible to quit (in case we get hung in I/O). */ | |
5177 | oquit = Vquit_flag; | |
5178 | Vquit_flag = Qnil; | |
570d7624 JB |
5179 | |
5180 | /* No GCPRO needed, because (when it matters) all Lisp_Object variables | |
5181 | point to non-strings reached from Vbuffer_alist. */ | |
5182 | ||
dee091a3 JD |
5183 | hook = intern ("auto-save-hook"); |
5184 | Frun_hooks (1, &hook); | |
570d7624 | 5185 | |
e54d3b5d RS |
5186 | if (STRINGP (Vauto_save_list_file_name)) |
5187 | { | |
0894672f | 5188 | Lisp_Object listfile; |
efdc16c9 | 5189 | |
258fd2cb | 5190 | listfile = Fexpand_file_name (Vauto_save_list_file_name, Qnil); |
0894672f GM |
5191 | |
5192 | /* Don't try to create the directory when shutting down Emacs, | |
5193 | because creating the directory might signal an error, and | |
5194 | that would leave Emacs in a strange state. */ | |
5195 | if (!NILP (Vrun_hooks)) | |
5196 | { | |
5197 | Lisp_Object dir; | |
d57563b6 RS |
5198 | dir = Qnil; |
5199 | GCPRO2 (dir, listfile); | |
0894672f GM |
5200 | dir = Ffile_name_directory (listfile); |
5201 | if (NILP (Ffile_directory_p (dir))) | |
5794dd61 RS |
5202 | internal_condition_case_1 (do_auto_save_make_dir, |
5203 | dir, Fcons (Fcons (Qfile_error, Qnil), Qnil), | |
5204 | do_auto_save_eh); | |
d57563b6 | 5205 | UNGCPRO; |
0894672f | 5206 | } |
efdc16c9 | 5207 | |
42a5b22f | 5208 | stream = fopen (SSDATA (listfile), "w"); |
1b335d29 | 5209 | } |
199607e4 | 5210 | |
fff7e982 KS |
5211 | record_unwind_protect (do_auto_save_unwind, |
5212 | make_save_value (stream, 0)); | |
a8c828be RS |
5213 | record_unwind_protect (do_auto_save_unwind_1, |
5214 | make_number (minibuffer_auto_raise)); | |
5215 | minibuffer_auto_raise = 0; | |
3be3c08e | 5216 | auto_saving = 1; |
ca730bf0 | 5217 | auto_save_error_occurred = 0; |
3be3c08e | 5218 | |
6b61353c KH |
5219 | /* On first pass, save all files that don't have handlers. |
5220 | On second pass, save all files that do have handlers. | |
5221 | ||
5222 | If Emacs is crashing, the handlers may tweak what is causing | |
5223 | Emacs to crash in the first place, and it would be a shame if | |
5224 | Emacs failed to autosave perfectly ordinary files because it | |
5225 | couldn't handle some ange-ftp'd file. */ | |
5226 | ||
f14b1c68 | 5227 | for (do_handled_files = 0; do_handled_files < 2; do_handled_files++) |
8e50cc2d | 5228 | for (tail = Vbuffer_alist; CONSP (tail); tail = XCDR (tail)) |
f14b1c68 | 5229 | { |
03699b14 | 5230 | buf = XCDR (XCAR (tail)); |
f14b1c68 | 5231 | b = XBUFFER (buf); |
199607e4 | 5232 | |
e54d3b5d | 5233 | /* Record all the buffers that have auto save mode |
258fd2cb RS |
5234 | in the special file that lists them. For each of these buffers, |
5235 | Record visited name (if any) and auto save name. */ | |
4b4deea2 | 5236 | if (STRINGP (BVAR (b, auto_save_file_name)) |
1b335d29 | 5237 | && stream != NULL && do_handled_files == 0) |
e54d3b5d | 5238 | { |
aab12958 | 5239 | BLOCK_INPUT; |
4b4deea2 | 5240 | if (!NILP (BVAR (b, filename))) |
258fd2cb | 5241 | { |
4b4deea2 TT |
5242 | fwrite (SDATA (BVAR (b, filename)), 1, |
5243 | SBYTES (BVAR (b, filename)), stream); | |
258fd2cb | 5244 | } |
1b335d29 | 5245 | putc ('\n', stream); |
4b4deea2 TT |
5246 | fwrite (SDATA (BVAR (b, auto_save_file_name)), 1, |
5247 | SBYTES (BVAR (b, auto_save_file_name)), stream); | |
1b335d29 | 5248 | putc ('\n', stream); |
aab12958 | 5249 | UNBLOCK_INPUT; |
e54d3b5d | 5250 | } |
17857782 | 5251 | |
f14b1c68 JB |
5252 | if (!NILP (current_only) |
5253 | && b != current_buffer) | |
5254 | continue; | |
e54d3b5d | 5255 | |
95385625 RS |
5256 | /* Don't auto-save indirect buffers. |
5257 | The base buffer takes care of it. */ | |
5258 | if (b->base_buffer) | |
5259 | continue; | |
5260 | ||
f14b1c68 JB |
5261 | /* Check for auto save enabled |
5262 | and file changed since last auto save | |
5263 | and file changed since last real save. */ | |
4b4deea2 | 5264 | if (STRINGP (BVAR (b, auto_save_file_name)) |
95385625 | 5265 | && BUF_SAVE_MODIFF (b) < BUF_MODIFF (b) |
0b5397c2 | 5266 | && BUF_AUTOSAVE_MODIFF (b) < BUF_MODIFF (b) |
82c2d839 | 5267 | /* -1 means we've turned off autosaving for a while--see below. */ |
4b4deea2 | 5268 | && XINT (BVAR (b, save_length)) >= 0 |
f14b1c68 | 5269 | && (do_handled_files |
4b4deea2 | 5270 | || NILP (Ffind_file_name_handler (BVAR (b, auto_save_file_name), |
49307295 | 5271 | Qwrite_region)))) |
f14b1c68 | 5272 | { |
b60247d9 RS |
5273 | EMACS_TIME before_time, after_time; |
5274 | ||
5275 | EMACS_GET_TIME (before_time); | |
5276 | ||
5277 | /* If we had a failure, don't try again for 20 minutes. */ | |
5278 | if (b->auto_save_failure_time >= 0 | |
5279 | && EMACS_SECS (before_time) - b->auto_save_failure_time < 1200) | |
5280 | continue; | |
5281 | ||
090101cf CY |
5282 | set_buffer_internal (b); |
5283 | if (NILP (Vauto_save_include_big_deletions) | |
4b4deea2 | 5284 | && (XFASTINT (BVAR (b, save_length)) * 10 |
4be941e3 | 5285 | > (BUF_Z (b) - BUF_BEG (b)) * 13) |
f14b1c68 JB |
5286 | /* A short file is likely to change a large fraction; |
5287 | spare the user annoying messages. */ | |
4b4deea2 | 5288 | && XFASTINT (BVAR (b, save_length)) > 5000 |
f14b1c68 | 5289 | /* These messages are frequent and annoying for `*mail*'. */ |
4b4deea2 | 5290 | && !EQ (BVAR (b, filename), Qnil) |
f14b1c68 JB |
5291 | && NILP (no_message)) |
5292 | { | |
5293 | /* It has shrunk too much; turn off auto-saving here. */ | |
a8c828be | 5294 | minibuffer_auto_raise = orig_minibuffer_auto_raise; |
fd91d0d4 | 5295 | message_with_string ("Buffer %s has shrunk a lot; auto save disabled in that buffer until next real save", |
4b4deea2 | 5296 | BVAR (b, name), 1); |
a8c828be | 5297 | minibuffer_auto_raise = 0; |
82c2d839 RS |
5298 | /* Turn off auto-saving until there's a real save, |
5299 | and prevent any more warnings. */ | |
4b4deea2 | 5300 | XSETINT (BVAR (b, save_length), -1); |
f14b1c68 JB |
5301 | Fsleep_for (make_number (1), Qnil); |
5302 | continue; | |
5303 | } | |
f14b1c68 JB |
5304 | if (!auto_saved && NILP (no_message)) |
5305 | message1 ("Auto-saving..."); | |
5306 | internal_condition_case (auto_save_1, Qt, auto_save_error); | |
5307 | auto_saved++; | |
0b5397c2 | 5308 | BUF_AUTOSAVE_MODIFF (b) = BUF_MODIFF (b); |
4b4deea2 | 5309 | XSETFASTINT (BVAR (current_buffer, save_length), Z - BEG); |
f14b1c68 | 5310 | set_buffer_internal (old); |
b60247d9 RS |
5311 | |
5312 | EMACS_GET_TIME (after_time); | |
5313 | ||
5314 | /* If auto-save took more than 60 seconds, | |
5315 | assume it was an NFS failure that got a timeout. */ | |
5316 | if (EMACS_SECS (after_time) - EMACS_SECS (before_time) > 60) | |
5317 | b->auto_save_failure_time = EMACS_SECS (after_time); | |
f14b1c68 JB |
5318 | } |
5319 | } | |
570d7624 | 5320 | |
b67f2ca5 RS |
5321 | /* Prevent another auto save till enough input events come in. */ |
5322 | record_auto_save (); | |
570d7624 | 5323 | |
17857782 | 5324 | if (auto_saved && NILP (no_message)) |
f05b275b | 5325 | { |
5794dd61 | 5326 | if (old_message_p) |
31f3d831 | 5327 | { |
5794dd61 RS |
5328 | /* If we are going to restore an old message, |
5329 | give time to read ours. */ | |
83f8d903 | 5330 | sit_for (make_number (1), 0, 0); |
c71106e5 | 5331 | restore_message (); |
31f3d831 | 5332 | } |
ca730bf0 | 5333 | else if (!auto_save_error_occurred) |
31e31a15 CY |
5334 | /* Don't overwrite the error message if an error occurred. |
5335 | If we displayed a message and then restored a state | |
5794dd61 | 5336 | with no message, leave a "done" message on the screen. */ |
f05b275b KH |
5337 | message1 ("Auto-saving...done"); |
5338 | } | |
570d7624 | 5339 | |
ff4c9993 RS |
5340 | Vquit_flag = oquit; |
5341 | ||
5794dd61 | 5342 | /* This restores the message-stack status. */ |
e54d3b5d | 5343 | unbind_to (count, Qnil); |
570d7624 JB |
5344 | return Qnil; |
5345 | } | |
5346 | ||
5347 | DEFUN ("set-buffer-auto-saved", Fset_buffer_auto_saved, | |
8c1a1077 PJ |
5348 | Sset_buffer_auto_saved, 0, 0, 0, |
5349 | doc: /* Mark current buffer as auto-saved with its current text. | |
5350 | No auto-save file will be written until the buffer changes again. */) | |
5842a27b | 5351 | (void) |
570d7624 | 5352 | { |
0b5397c2 SM |
5353 | /* FIXME: This should not be called in indirect buffers, since |
5354 | they're not autosaved. */ | |
5355 | BUF_AUTOSAVE_MODIFF (current_buffer) = MODIFF; | |
4b4deea2 | 5356 | XSETFASTINT (BVAR (current_buffer, save_length), Z - BEG); |
b60247d9 RS |
5357 | current_buffer->auto_save_failure_time = -1; |
5358 | return Qnil; | |
5359 | } | |
5360 | ||
5361 | DEFUN ("clear-buffer-auto-save-failure", Fclear_buffer_auto_save_failure, | |
8c1a1077 PJ |
5362 | Sclear_buffer_auto_save_failure, 0, 0, 0, |
5363 | doc: /* Clear any record of a recent auto-save failure in the current buffer. */) | |
5842a27b | 5364 | (void) |
b60247d9 RS |
5365 | { |
5366 | current_buffer->auto_save_failure_time = -1; | |
570d7624 JB |
5367 | return Qnil; |
5368 | } | |
5369 | ||
5370 | DEFUN ("recent-auto-save-p", Frecent_auto_save_p, Srecent_auto_save_p, | |
8c1a1077 | 5371 | 0, 0, 0, |
68780e2a RS |
5372 | doc: /* Return t if current buffer has been auto-saved recently. |
5373 | More precisely, if it has been auto-saved since last read from or saved | |
5374 | in the visited file. If the buffer has no visited file, | |
5375 | then any auto-save counts as "recent". */) | |
5842a27b | 5376 | (void) |
570d7624 | 5377 | { |
0b5397c2 SM |
5378 | /* FIXME: maybe we should return nil for indirect buffers since |
5379 | they're never autosaved. */ | |
5380 | return (SAVE_MODIFF < BUF_AUTOSAVE_MODIFF (current_buffer) ? Qt : Qnil); | |
570d7624 JB |
5381 | } |
5382 | \f | |
5383 | /* Reading and completing file names */ | |
6e710ae5 | 5384 | |
88208bb8 JD |
5385 | DEFUN ("next-read-file-uses-dialog-p", Fnext_read_file_uses_dialog_p, |
5386 | Snext_read_file_uses_dialog_p, 0, 0, 0, | |
5387 | doc: /* Return t if a call to `read-file-name' will use a dialog. | |
5388 | The return value is only relevant for a call to `read-file-name' that happens | |
1a0de25c | 5389 | before any other event (mouse or keypress) is handled. */) |
5842a27b | 5390 | (void) |
88208bb8 | 5391 | { |
9e2a2647 | 5392 | #if defined (USE_MOTIF) || defined (HAVE_NTGUI) || defined (USE_GTK) |
88208bb8 JD |
5393 | if ((NILP (last_nonmenu_event) || CONSP (last_nonmenu_event)) |
5394 | && use_dialog_box | |
5395 | && use_file_dialog | |
5396 | && have_menus_p ()) | |
5397 | return Qt; | |
5398 | #endif | |
5399 | return Qnil; | |
5400 | } | |
d4a42098 | 5401 | |
dbd50d4b | 5402 | Lisp_Object |
971de7fb | 5403 | Fread_file_name (Lisp_Object prompt, Lisp_Object dir, Lisp_Object default_filename, Lisp_Object mustmatch, Lisp_Object initial, Lisp_Object predicate) |
570d7624 | 5404 | { |
fd4ead52 | 5405 | struct gcpro gcpro1; |
dbd50d4b | 5406 | Lisp_Object args[7]; |
a79485af | 5407 | |
71e1f69d | 5408 | GCPRO1 (default_filename); |
dbd50d4b SM |
5409 | args[0] = intern ("read-file-name"); |
5410 | args[1] = prompt; | |
5411 | args[2] = dir; | |
5412 | args[3] = default_filename; | |
5413 | args[4] = mustmatch; | |
5414 | args[5] = initial; | |
5415 | args[6] = predicate; | |
5416 | RETURN_UNGCPRO (Ffuncall (7, args)); | |
570d7624 | 5417 | } |
9c856db9 | 5418 | |
570d7624 | 5419 | \f |
dfcf069d | 5420 | void |
971de7fb | 5421 | syms_of_fileio (void) |
570d7624 | 5422 | { |
d67b4f80 DN |
5423 | Qoperations = intern_c_string ("operations"); |
5424 | Qexpand_file_name = intern_c_string ("expand-file-name"); | |
5425 | Qsubstitute_in_file_name = intern_c_string ("substitute-in-file-name"); | |
5426 | Qdirectory_file_name = intern_c_string ("directory-file-name"); | |
5427 | Qfile_name_directory = intern_c_string ("file-name-directory"); | |
5428 | Qfile_name_nondirectory = intern_c_string ("file-name-nondirectory"); | |
5429 | Qunhandled_file_name_directory = intern_c_string ("unhandled-file-name-directory"); | |
5430 | Qfile_name_as_directory = intern_c_string ("file-name-as-directory"); | |
5431 | Qcopy_file = intern_c_string ("copy-file"); | |
5432 | Qmake_directory_internal = intern_c_string ("make-directory-internal"); | |
5433 | Qmake_directory = intern_c_string ("make-directory"); | |
5434 | Qdelete_directory_internal = intern_c_string ("delete-directory-internal"); | |
5435 | Qdelete_file = intern_c_string ("delete-file"); | |
5436 | Qrename_file = intern_c_string ("rename-file"); | |
5437 | Qadd_name_to_file = intern_c_string ("add-name-to-file"); | |
5438 | Qmake_symbolic_link = intern_c_string ("make-symbolic-link"); | |
5439 | Qfile_exists_p = intern_c_string ("file-exists-p"); | |
5440 | Qfile_executable_p = intern_c_string ("file-executable-p"); | |
5441 | Qfile_readable_p = intern_c_string ("file-readable-p"); | |
5442 | Qfile_writable_p = intern_c_string ("file-writable-p"); | |
5443 | Qfile_symlink_p = intern_c_string ("file-symlink-p"); | |
5444 | Qaccess_file = intern_c_string ("access-file"); | |
5445 | Qfile_directory_p = intern_c_string ("file-directory-p"); | |
5446 | Qfile_regular_p = intern_c_string ("file-regular-p"); | |
5447 | Qfile_accessible_directory_p = intern_c_string ("file-accessible-directory-p"); | |
5448 | Qfile_modes = intern_c_string ("file-modes"); | |
5449 | Qset_file_modes = intern_c_string ("set-file-modes"); | |
5450 | Qset_file_times = intern_c_string ("set-file-times"); | |
574c05e2 KK |
5451 | Qfile_selinux_context = intern_c_string("file-selinux-context"); |
5452 | Qset_file_selinux_context = intern_c_string("set-file-selinux-context"); | |
d67b4f80 DN |
5453 | Qfile_newer_than_file_p = intern_c_string ("file-newer-than-file-p"); |
5454 | Qinsert_file_contents = intern_c_string ("insert-file-contents"); | |
5455 | Qwrite_region = intern_c_string ("write-region"); | |
5456 | Qverify_visited_file_modtime = intern_c_string ("verify-visited-file-modtime"); | |
5457 | Qset_visited_file_modtime = intern_c_string ("set-visited-file-modtime"); | |
5458 | Qauto_save_coding = intern_c_string ("auto-save-coding"); | |
32f4334d | 5459 | |
f6c9b683 | 5460 | staticpro (&Qoperations); |
642ef245 | 5461 | staticpro (&Qexpand_file_name); |
273e0829 | 5462 | staticpro (&Qsubstitute_in_file_name); |
642ef245 JB |
5463 | staticpro (&Qdirectory_file_name); |
5464 | staticpro (&Qfile_name_directory); | |
5465 | staticpro (&Qfile_name_nondirectory); | |
5466 | staticpro (&Qunhandled_file_name_directory); | |
5467 | staticpro (&Qfile_name_as_directory); | |
15c65264 | 5468 | staticpro (&Qcopy_file); |
c34b559d | 5469 | staticpro (&Qmake_directory_internal); |
b272d624 | 5470 | staticpro (&Qmake_directory); |
9d8f3bd9 | 5471 | staticpro (&Qdelete_directory_internal); |
15c65264 RS |
5472 | staticpro (&Qdelete_file); |
5473 | staticpro (&Qrename_file); | |
5474 | staticpro (&Qadd_name_to_file); | |
5475 | staticpro (&Qmake_symbolic_link); | |
5476 | staticpro (&Qfile_exists_p); | |
5477 | staticpro (&Qfile_executable_p); | |
5478 | staticpro (&Qfile_readable_p); | |
15c65264 | 5479 | staticpro (&Qfile_writable_p); |
1f8653eb RS |
5480 | staticpro (&Qaccess_file); |
5481 | staticpro (&Qfile_symlink_p); | |
15c65264 | 5482 | staticpro (&Qfile_directory_p); |
adedc71d | 5483 | staticpro (&Qfile_regular_p); |
15c65264 RS |
5484 | staticpro (&Qfile_accessible_directory_p); |
5485 | staticpro (&Qfile_modes); | |
5486 | staticpro (&Qset_file_modes); | |
819da85b | 5487 | staticpro (&Qset_file_times); |
574c05e2 KK |
5488 | staticpro (&Qfile_selinux_context); |
5489 | staticpro (&Qset_file_selinux_context); | |
15c65264 RS |
5490 | staticpro (&Qfile_newer_than_file_p); |
5491 | staticpro (&Qinsert_file_contents); | |
5492 | staticpro (&Qwrite_region); | |
5493 | staticpro (&Qverify_visited_file_modtime); | |
0a61794b | 5494 | staticpro (&Qset_visited_file_modtime); |
356a6224 | 5495 | staticpro (&Qauto_save_coding); |
642ef245 | 5496 | |
d67b4f80 | 5497 | Qfile_name_history = intern_c_string ("file-name-history"); |
642ef245 | 5498 | Fset (Qfile_name_history, Qnil); |
15c65264 RS |
5499 | staticpro (&Qfile_name_history); |
5500 | ||
d67b4f80 | 5501 | Qfile_error = intern_c_string ("file-error"); |
570d7624 | 5502 | staticpro (&Qfile_error); |
d67b4f80 | 5503 | Qfile_already_exists = intern_c_string ("file-already-exists"); |
570d7624 | 5504 | staticpro (&Qfile_already_exists); |
d67b4f80 | 5505 | Qfile_date_error = intern_c_string ("file-date-error"); |
c0b7b21c | 5506 | staticpro (&Qfile_date_error); |
d67b4f80 | 5507 | Qexcl = intern_c_string ("excl"); |
505ab9bc | 5508 | staticpro (&Qexcl); |
570d7624 | 5509 | |
29208e82 | 5510 | DEFVAR_LISP ("file-name-coding-system", Vfile_name_coding_system, |
8c1a1077 | 5511 | doc: /* *Coding system for encoding file names. |
346ebf53 | 5512 | If it is nil, `default-file-name-coding-system' (which see) is used. */); |
b1d1b865 RS |
5513 | Vfile_name_coding_system = Qnil; |
5514 | ||
cd913586 | 5515 | DEFVAR_LISP ("default-file-name-coding-system", |
29208e82 | 5516 | Vdefault_file_name_coding_system, |
8c1a1077 | 5517 | doc: /* Default coding system for encoding file names. |
346ebf53 | 5518 | This variable is used only when `file-name-coding-system' is nil. |
8c1a1077 | 5519 | |
346ebf53 | 5520 | This variable is set/changed by the command `set-language-environment'. |
8c1a1077 | 5521 | User should not set this variable manually, |
346ebf53 | 5522 | instead use `file-name-coding-system' to get a constant encoding |
8c1a1077 | 5523 | of file names regardless of the current language environment. */); |
cd913586 KH |
5524 | Vdefault_file_name_coding_system = Qnil; |
5525 | ||
d67b4f80 | 5526 | Qformat_decode = intern_c_string ("format-decode"); |
0d420e88 | 5527 | staticpro (&Qformat_decode); |
d67b4f80 | 5528 | Qformat_annotate_function = intern_c_string ("format-annotate-function"); |
0d420e88 | 5529 | staticpro (&Qformat_annotate_function); |
d67b4f80 | 5530 | Qafter_insert_file_set_coding = intern_c_string ("after-insert-file-set-coding"); |
2080470e | 5531 | staticpro (&Qafter_insert_file_set_coding); |
efdc16c9 | 5532 | |
d67b4f80 | 5533 | Qcar_less_than_car = intern_c_string ("car-less-than-car"); |
d6a3cc15 RS |
5534 | staticpro (&Qcar_less_than_car); |
5535 | ||
570d7624 | 5536 | Fput (Qfile_error, Qerror_conditions, |
d67b4f80 | 5537 | Fpurecopy (list2 (Qfile_error, Qerror))); |
570d7624 | 5538 | Fput (Qfile_error, Qerror_message, |
d67b4f80 | 5539 | make_pure_c_string ("File error")); |
570d7624 JB |
5540 | |
5541 | Fput (Qfile_already_exists, Qerror_conditions, | |
d67b4f80 | 5542 | Fpurecopy (list3 (Qfile_already_exists, Qfile_error, Qerror))); |
570d7624 | 5543 | Fput (Qfile_already_exists, Qerror_message, |
d67b4f80 | 5544 | make_pure_c_string ("File already exists")); |
570d7624 | 5545 | |
c0b7b21c | 5546 | Fput (Qfile_date_error, Qerror_conditions, |
d67b4f80 | 5547 | Fpurecopy (list3 (Qfile_date_error, Qfile_error, Qerror))); |
c0b7b21c | 5548 | Fput (Qfile_date_error, Qerror_message, |
d67b4f80 | 5549 | make_pure_c_string ("Cannot set file date")); |
c0b7b21c | 5550 | |
29208e82 | 5551 | DEFVAR_LISP ("file-name-handler-alist", Vfile_name_handler_alist, |
8c1a1077 PJ |
5552 | doc: /* *Alist of elements (REGEXP . HANDLER) for file names handled specially. |
5553 | If a file name matches REGEXP, then all I/O on that file is done by calling | |
5554 | HANDLER. | |
5555 | ||
5556 | The first argument given to HANDLER is the name of the I/O primitive | |
5557 | to be handled; the remaining arguments are the arguments that were | |
5558 | passed to that primitive. For example, if you do | |
5559 | (file-exists-p FILENAME) | |
5560 | and FILENAME is handled by HANDLER, then HANDLER is called like this: | |
5561 | (funcall HANDLER 'file-exists-p FILENAME) | |
5562 | The function `find-file-name-handler' checks this list for a handler | |
5563 | for its argument. */); | |
09121adc RS |
5564 | Vfile_name_handler_alist = Qnil; |
5565 | ||
0414b394 | 5566 | DEFVAR_LISP ("set-auto-coding-function", |
29208e82 | 5567 | Vset_auto_coding_function, |
8c1a1077 PJ |
5568 | doc: /* If non-nil, a function to call to decide a coding system of file. |
5569 | Two arguments are passed to this function: the file name | |
5570 | and the length of a file contents following the point. | |
5571 | This function should return a coding system to decode the file contents. | |
5572 | It should check the file name against `auto-coding-alist'. | |
5573 | If no coding system is decided, it should check a coding system | |
5574 | specified in the heading lines with the format: | |
5575 | -*- ... coding: CODING-SYSTEM; ... -*- | |
5576 | or local variable spec of the tailing lines with `coding:' tag. */); | |
0414b394 | 5577 | Vset_auto_coding_function = Qnil; |
c9e82392 | 5578 | |
29208e82 | 5579 | DEFVAR_LISP ("after-insert-file-functions", Vafter_insert_file_functions, |
8c1a1077 | 5580 | doc: /* A list of functions to be called at the end of `insert-file-contents'. |
0cf9f5b5 RS |
5581 | Each is passed one argument, the number of characters inserted, |
5582 | with point at the start of the inserted text. Each function | |
5583 | should leave point the same, and return the new character count. | |
cf6d2357 RS |
5584 | If `insert-file-contents' is intercepted by a handler from |
5585 | `file-name-handler-alist', that handler is responsible for calling the | |
5586 | functions in `after-insert-file-functions' if appropriate. */); | |
d6a3cc15 RS |
5587 | Vafter_insert_file_functions = Qnil; |
5588 | ||
29208e82 | 5589 | DEFVAR_LISP ("write-region-annotate-functions", Vwrite_region_annotate_functions, |
8c1a1077 PJ |
5590 | doc: /* A list of functions to be called at the start of `write-region'. |
5591 | Each is passed two arguments, START and END as for `write-region'. | |
5592 | These are usually two numbers but not always; see the documentation | |
5593 | for `write-region'. The function should return a list of pairs | |
5594 | of the form (POSITION . STRING), consisting of strings to be effectively | |
5595 | inserted at the specified positions of the file being written (1 means to | |
5596 | insert before the first byte written). The POSITIONs must be sorted into | |
67fbc0cb CY |
5597 | increasing order. |
5598 | ||
5599 | If there are several annotation functions, the lists returned by these | |
5600 | functions are merged destructively. As each annotation function runs, | |
5601 | the variable `write-region-annotations-so-far' contains a list of all | |
5602 | annotations returned by previous annotation functions. | |
5603 | ||
5604 | An annotation function can return with a different buffer current. | |
5605 | Doing so removes the annotations returned by previous functions, and | |
5606 | resets START and END to `point-min' and `point-max' of the new buffer. | |
5607 | ||
5608 | After `write-region' completes, Emacs calls the function stored in | |
5609 | `write-region-post-annotation-function', once for each buffer that was | |
5610 | current when building the annotations (i.e., at least once), with that | |
5611 | buffer current. */); | |
d6a3cc15 | 5612 | Vwrite_region_annotate_functions = Qnil; |
bd235610 SM |
5613 | staticpro (&Qwrite_region_annotate_functions); |
5614 | Qwrite_region_annotate_functions | |
d67b4f80 | 5615 | = intern_c_string ("write-region-annotate-functions"); |
d6a3cc15 | 5616 | |
67fbc0cb | 5617 | DEFVAR_LISP ("write-region-post-annotation-function", |
29208e82 | 5618 | Vwrite_region_post_annotation_function, |
67fbc0cb CY |
5619 | doc: /* Function to call after `write-region' completes. |
5620 | The function is called with no arguments. If one or more of the | |
5621 | annotation functions in `write-region-annotate-functions' changed the | |
5622 | current buffer, the function stored in this variable is called for | |
5623 | each of those additional buffers as well, in addition to the original | |
5624 | buffer. The relevant buffer is current during each function call. */); | |
5625 | Vwrite_region_post_annotation_function = Qnil; | |
5626 | staticpro (&Vwrite_region_annotation_buffers); | |
5627 | ||
6fc6f94b | 5628 | DEFVAR_LISP ("write-region-annotations-so-far", |
29208e82 | 5629 | Vwrite_region_annotations_so_far, |
8c1a1077 PJ |
5630 | doc: /* When an annotation function is called, this holds the previous annotations. |
5631 | These are the annotations made by other annotation functions | |
5632 | that were already called. See also `write-region-annotate-functions'. */); | |
6fc6f94b RS |
5633 | Vwrite_region_annotations_so_far = Qnil; |
5634 | ||
29208e82 | 5635 | DEFVAR_LISP ("inhibit-file-name-handlers", Vinhibit_file_name_handlers, |
8c1a1077 PJ |
5636 | doc: /* A list of file name handlers that temporarily should not be used. |
5637 | This applies only to the operation `inhibit-file-name-operation'. */); | |
82c2d839 RS |
5638 | Vinhibit_file_name_handlers = Qnil; |
5639 | ||
29208e82 | 5640 | DEFVAR_LISP ("inhibit-file-name-operation", Vinhibit_file_name_operation, |
8c1a1077 | 5641 | doc: /* The operation for which `inhibit-file-name-handlers' is applicable. */); |
a65970a0 RS |
5642 | Vinhibit_file_name_operation = Qnil; |
5643 | ||
29208e82 | 5644 | DEFVAR_LISP ("auto-save-list-file-name", Vauto_save_list_file_name, |
8c1a1077 PJ |
5645 | doc: /* File name in which we write a list of all auto save file names. |
5646 | This variable is initialized automatically from `auto-save-list-file-prefix' | |
5647 | shortly after Emacs reads your `.emacs' file, if you have not yet given it | |
5648 | a non-nil value. */); | |
e54d3b5d RS |
5649 | Vauto_save_list_file_name = Qnil; |
5650 | ||
29208e82 | 5651 | DEFVAR_LISP ("auto-save-visited-file-name", Vauto_save_visited_file_name, |
699b53bc CY |
5652 | doc: /* Non-nil says auto-save a buffer in the file it is visiting, when practical. |
5653 | Normally auto-save files are written under other names. */); | |
5654 | Vauto_save_visited_file_name = Qnil; | |
5655 | ||
29208e82 | 5656 | DEFVAR_LISP ("auto-save-include-big-deletions", Vauto_save_include_big_deletions, |
090101cf CY |
5657 | doc: /* If non-nil, auto-save even if a large part of the text is deleted. |
5658 | If nil, deleting a substantial portion of the text disables auto-save | |
5659 | in the buffer; this is the default behavior, because the auto-save | |
5660 | file is usually more useful if it contains the deleted text. */); | |
5661 | Vauto_save_include_big_deletions = Qnil; | |
5662 | ||
ccf61795 | 5663 | #ifdef HAVE_FSYNC |
29208e82 | 5664 | DEFVAR_BOOL ("write-region-inhibit-fsync", write_region_inhibit_fsync, |
e3f509dd RF |
5665 | doc: /* *Non-nil means don't call fsync in `write-region'. |
5666 | This variable affects calls to `write-region' as well as save commands. | |
5667 | A non-nil value may result in data loss! */); | |
ccf61795 RF |
5668 | write_region_inhibit_fsync = 0; |
5669 | #endif | |
5670 | ||
29208e82 | 5671 | DEFVAR_BOOL ("delete-by-moving-to-trash", delete_by_moving_to_trash, |
6cf29fe8 | 5672 | doc: /* Specifies whether to use the system's trash can. |
f1a5d776 CY |
5673 | When non-nil, certain file deletion commands use the function |
5674 | `move-file-to-trash' instead of deleting files outright. | |
5675 | This includes interactive calls to `delete-file' and | |
5676 | `delete-directory' and the Dired deletion commands. */); | |
6cf29fe8 | 5677 | delete_by_moving_to_trash = 0; |
d67b4f80 DN |
5678 | Qdelete_by_moving_to_trash = intern_c_string ("delete-by-moving-to-trash"); |
5679 | Qmove_file_to_trash = intern_c_string ("move-file-to-trash"); | |
6cf29fe8 | 5680 | staticpro (&Qmove_file_to_trash); |
8719abec CY |
5681 | Qcopy_directory = intern_c_string ("copy-directory"); |
5682 | staticpro (&Qcopy_directory); | |
5683 | Qdelete_directory = intern_c_string ("delete-directory"); | |
5684 | staticpro (&Qdelete_directory); | |
6cf29fe8 | 5685 | |
642ef245 | 5686 | defsubr (&Sfind_file_name_handler); |
570d7624 JB |
5687 | defsubr (&Sfile_name_directory); |
5688 | defsubr (&Sfile_name_nondirectory); | |
642ef245 | 5689 | defsubr (&Sunhandled_file_name_directory); |
570d7624 JB |
5690 | defsubr (&Sfile_name_as_directory); |
5691 | defsubr (&Sdirectory_file_name); | |
5692 | defsubr (&Smake_temp_name); | |
5693 | defsubr (&Sexpand_file_name); | |
5694 | defsubr (&Ssubstitute_in_file_name); | |
5695 | defsubr (&Scopy_file); | |
9bbe01fb | 5696 | defsubr (&Smake_directory_internal); |
9d8f3bd9 | 5697 | defsubr (&Sdelete_directory_internal); |
570d7624 JB |
5698 | defsubr (&Sdelete_file); |
5699 | defsubr (&Srename_file); | |
5700 | defsubr (&Sadd_name_to_file); | |
570d7624 | 5701 | defsubr (&Smake_symbolic_link); |
570d7624 JB |
5702 | defsubr (&Sfile_name_absolute_p); |
5703 | defsubr (&Sfile_exists_p); | |
5704 | defsubr (&Sfile_executable_p); | |
5705 | defsubr (&Sfile_readable_p); | |
5706 | defsubr (&Sfile_writable_p); | |
1f8653eb | 5707 | defsubr (&Saccess_file); |
570d7624 JB |
5708 | defsubr (&Sfile_symlink_p); |
5709 | defsubr (&Sfile_directory_p); | |
b72dea2a | 5710 | defsubr (&Sfile_accessible_directory_p); |
f793dc6c | 5711 | defsubr (&Sfile_regular_p); |
570d7624 JB |
5712 | defsubr (&Sfile_modes); |
5713 | defsubr (&Sset_file_modes); | |
819da85b | 5714 | defsubr (&Sset_file_times); |
574c05e2 KK |
5715 | defsubr (&Sfile_selinux_context); |
5716 | defsubr (&Sset_file_selinux_context); | |
c24e9a53 RS |
5717 | defsubr (&Sset_default_file_modes); |
5718 | defsubr (&Sdefault_file_modes); | |
570d7624 JB |
5719 | defsubr (&Sfile_newer_than_file_p); |
5720 | defsubr (&Sinsert_file_contents); | |
5721 | defsubr (&Swrite_region); | |
d6a3cc15 | 5722 | defsubr (&Scar_less_than_car); |
570d7624 JB |
5723 | defsubr (&Sverify_visited_file_modtime); |
5724 | defsubr (&Sclear_visited_file_modtime); | |
f5d5eccf | 5725 | defsubr (&Svisited_file_modtime); |
570d7624 JB |
5726 | defsubr (&Sset_visited_file_modtime); |
5727 | defsubr (&Sdo_auto_save); | |
5728 | defsubr (&Sset_buffer_auto_saved); | |
b60247d9 | 5729 | defsubr (&Sclear_buffer_auto_save_failure); |
570d7624 JB |
5730 | defsubr (&Srecent_auto_save_p); |
5731 | ||
88208bb8 | 5732 | defsubr (&Snext_read_file_uses_dialog_p); |
85ffea93 | 5733 | |
697c17a2 | 5734 | #ifdef HAVE_SYNC |
85ffea93 | 5735 | defsubr (&Sunix_sync); |
483a2e10 | 5736 | #endif |
570d7624 | 5737 | } |