Commit | Line | Data |
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570d7624 | 1 | /* File IO for GNU Emacs. |
0b5538bd TTN |
2 | Copyright (C) 1985, 1986, 1987, 1988, 1993, 1994, 1995, 1996, |
3 | 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, | |
0b5397c2 | 4 | 2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc. |
570d7624 JB |
5 | |
6 | This file is part of GNU Emacs. | |
7 | ||
9ec0b715 | 8 | GNU Emacs is free software: you can redistribute it and/or modify |
570d7624 | 9 | it under the terms of the GNU General Public License as published by |
9ec0b715 GM |
10 | the Free Software Foundation, either version 3 of the License, or |
11 | (at your option) any later version. | |
570d7624 JB |
12 | |
13 | GNU Emacs is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
9ec0b715 | 19 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
570d7624 | 20 | |
18160b98 | 21 | #include <config.h> |
77a28bbf | 22 | #include <limits.h> |
570d7624 | 23 | |
612221ab | 24 | #ifdef HAVE_FCNTL_H |
bb369dc6 RS |
25 | #include <fcntl.h> |
26 | #endif | |
27 | ||
1b335d29 | 28 | #include <stdio.h> |
570d7624 JB |
29 | #include <sys/types.h> |
30 | #include <sys/stat.h> | |
d7306fe6 | 31 | #include <setjmp.h> |
bfb61299 | 32 | |
29beb080 RS |
33 | #ifdef HAVE_UNISTD_H |
34 | #include <unistd.h> | |
35 | #endif | |
36 | ||
f73b0ada BF |
37 | #if !defined (S_ISLNK) && defined (S_IFLNK) |
38 | # define S_ISLNK(m) (((m) & S_IFMT) == S_IFLNK) | |
39 | #endif | |
40 | ||
bb369dc6 RS |
41 | #if !defined (S_ISFIFO) && defined (S_IFIFO) |
42 | # define S_ISFIFO(m) (((m) & S_IFMT) == S_IFIFO) | |
43 | #endif | |
44 | ||
f73b0ada BF |
45 | #if !defined (S_ISREG) && defined (S_IFREG) |
46 | # define S_ISREG(m) (((m) & S_IFMT) == S_IFREG) | |
47 | #endif | |
48 | ||
5b9c0a1d | 49 | #ifdef HAVE_PWD_H |
570d7624 | 50 | #include <pwd.h> |
bfb61299 JB |
51 | #endif |
52 | ||
570d7624 | 53 | #include <ctype.h> |
570d7624 JB |
54 | #include <errno.h> |
55 | ||
574c05e2 KK |
56 | #ifdef HAVE_LIBSELINUX |
57 | #include <selinux/selinux.h> | |
58 | #include <selinux/context.h> | |
59 | #endif | |
60 | ||
570d7624 | 61 | #include "lisp.h" |
8d4e077b | 62 | #include "intervals.h" |
570d7624 | 63 | #include "buffer.h" |
db327c7e | 64 | #include "character.h" |
6fdaa9a0 | 65 | #include "coding.h" |
570d7624 | 66 | #include "window.h" |
67c08d6c | 67 | #include "blockinput.h" |
385ed61f KL |
68 | #include "frame.h" |
69 | #include "dispextern.h" | |
570d7624 | 70 | |
5e570b75 RS |
71 | #ifdef WINDOWSNT |
72 | #define NOMINMAX 1 | |
73 | #include <windows.h> | |
74 | #include <stdlib.h> | |
75 | #include <fcntl.h> | |
76 | #endif /* not WINDOWSNT */ | |
77 | ||
7990d02a EZ |
78 | #ifdef MSDOS |
79 | #include "msdos.h" | |
80 | #include <sys/param.h> | |
7990d02a EZ |
81 | #include <fcntl.h> |
82 | #include <string.h> | |
83 | #endif | |
7990d02a | 84 | |
199607e4 | 85 | #ifdef DOS_NT |
199607e4 RS |
86 | /* On Windows, drive letters must be alphabetic - on DOS, the Netware |
87 | redirector allows the six letters between 'Z' and 'a' as well. */ | |
88 | #ifdef MSDOS | |
89 | #define IS_DRIVE(x) ((x) >= 'A' && (x) <= 'z') | |
90 | #endif | |
91 | #ifdef WINDOWSNT | |
92 | #define IS_DRIVE(x) isalpha (x) | |
93 | #endif | |
f54b565c MB |
94 | /* Need to lower-case the drive letter, or else expanded |
95 | filenames will sometimes compare inequal, because | |
96 | `expand-file-name' doesn't always down-case the drive letter. */ | |
97 | #define DRIVE_LETTER(x) (tolower (x)) | |
199607e4 RS |
98 | #endif |
99 | ||
de5bf5d3 | 100 | #include "systime.h" |
570d7624 JB |
101 | |
102 | #ifdef HPUX | |
103 | #include <netio.h> | |
47e7b9e5 | 104 | #endif |
570d7624 | 105 | |
9c856db9 GM |
106 | #include "commands.h" |
107 | extern int use_dialog_box; | |
6b61353c | 108 | extern int use_file_dialog; |
9c856db9 | 109 | |
570d7624 JB |
110 | #ifndef O_WRONLY |
111 | #define O_WRONLY 1 | |
112 | #endif | |
113 | ||
4018b5ef RS |
114 | #ifndef O_RDONLY |
115 | #define O_RDONLY 0 | |
116 | #endif | |
117 | ||
8f6df9b5 EZ |
118 | #ifndef S_ISLNK |
119 | # define lstat stat | |
120 | #endif | |
121 | ||
c1558952 TTN |
122 | #ifndef FILE_SYSTEM_CASE |
123 | #define FILE_SYSTEM_CASE(filename) (filename) | |
124 | #endif | |
125 | ||
570d7624 JB |
126 | /* Nonzero during writing of auto-save files */ |
127 | int auto_saving; | |
128 | ||
129 | /* Set by auto_save_1 to mode of original file so Fwrite_region will create | |
130 | a new file with the same mode as the original */ | |
131 | int auto_save_mode_bits; | |
132 | ||
ca730bf0 CY |
133 | /* Set by auto_save_1 if an error occurred during the last auto-save. */ |
134 | int auto_save_error_occurred; | |
135 | ||
356a6224 KH |
136 | /* The symbol bound to coding-system-for-read when |
137 | insert-file-contents is called for recovering a file. This is not | |
138 | an actual coding system name, but just an indicator to tell | |
139 | insert-file-contents to use `emacs-mule' with a special flag for | |
140 | auto saving and recovering a file. */ | |
141 | Lisp_Object Qauto_save_coding; | |
142 | ||
b1d1b865 RS |
143 | /* Coding system for file names, or nil if none. */ |
144 | Lisp_Object Vfile_name_coding_system; | |
145 | ||
cd913586 KH |
146 | /* Coding system for file names used only when |
147 | Vfile_name_coding_system is nil. */ | |
148 | Lisp_Object Vdefault_file_name_coding_system; | |
149 | ||
199607e4 | 150 | /* Alist of elements (REGEXP . HANDLER) for file names |
32f4334d RS |
151 | whose I/O is done with a special handler. */ |
152 | Lisp_Object Vfile_name_handler_alist; | |
153 | ||
f6c9b683 RS |
154 | /* Property name of a file name handler, |
155 | which gives a list of operations it handles.. */ | |
156 | Lisp_Object Qoperations; | |
157 | ||
0d420e88 BG |
158 | /* Lisp functions for translating file formats */ |
159 | Lisp_Object Qformat_decode, Qformat_annotate_function; | |
160 | ||
c9e82392 | 161 | /* Function to be called to decide a coding system of a reading file. */ |
0414b394 | 162 | Lisp_Object Vset_auto_coding_function; |
c9e82392 | 163 | |
d6a3cc15 RS |
164 | /* Functions to be called to process text properties in inserted file. */ |
165 | Lisp_Object Vafter_insert_file_functions; | |
166 | ||
2080470e | 167 | /* Lisp function for setting buffer-file-coding-system and the |
b6426b03 | 168 | multibyteness of the current buffer after inserting a file. */ |
2080470e | 169 | Lisp_Object Qafter_insert_file_set_coding; |
b6426b03 | 170 | |
d6a3cc15 RS |
171 | /* Functions to be called to create text property annotations for file. */ |
172 | Lisp_Object Vwrite_region_annotate_functions; | |
bd235610 | 173 | Lisp_Object Qwrite_region_annotate_functions; |
67fbc0cb | 174 | Lisp_Object Vwrite_region_post_annotation_function; |
d6a3cc15 | 175 | |
6fc6f94b RS |
176 | /* During build_annotations, each time an annotation function is called, |
177 | this holds the annotations made by the previous functions. */ | |
178 | Lisp_Object Vwrite_region_annotations_so_far; | |
179 | ||
67fbc0cb CY |
180 | /* Each time an annotation function changes the buffer, the new buffer |
181 | is added here. */ | |
182 | Lisp_Object Vwrite_region_annotation_buffers; | |
183 | ||
e54d3b5d RS |
184 | /* File name in which we write a list of all our auto save files. */ |
185 | Lisp_Object Vauto_save_list_file_name; | |
186 | ||
699b53bc CY |
187 | /* Whether or not files are auto-saved into themselves. */ |
188 | Lisp_Object Vauto_save_visited_file_name; | |
189 | ||
090101cf CY |
190 | /* Whether or not to continue auto-saving after a large deletion. */ |
191 | Lisp_Object Vauto_save_include_big_deletions; | |
192 | ||
199607e4 RS |
193 | /* On NT, specifies the directory separator character, used (eg.) when |
194 | expanding file names. This can be bound to / or \. */ | |
195 | Lisp_Object Vdirectory_sep_char; | |
196 | ||
ccf61795 RF |
197 | #ifdef HAVE_FSYNC |
198 | /* Nonzero means skip the call to fsync in Fwrite-region. */ | |
199 | int write_region_inhibit_fsync; | |
200 | #endif | |
201 | ||
6cf29fe8 | 202 | /* Non-zero means call move-file-to-trash in Fdelete_file or |
9d8f3bd9 | 203 | Fdelete_directory_internal. */ |
6cf29fe8 JR |
204 | int delete_by_moving_to_trash; |
205 | ||
d2b66acf GM |
206 | Lisp_Object Qdelete_by_moving_to_trash; |
207 | ||
6cf29fe8 JR |
208 | /* Lisp function for moving files to trash. */ |
209 | Lisp_Object Qmove_file_to_trash; | |
210 | ||
8719abec CY |
211 | /* Lisp function for recursively copying directories. */ |
212 | Lisp_Object Qcopy_directory; | |
213 | ||
214 | /* Lisp function for recursively deleting directories. */ | |
215 | Lisp_Object Qdelete_directory; | |
216 | ||
84f6296a RS |
217 | extern Lisp_Object Vuser_login_name; |
218 | ||
c1c4693e RS |
219 | #ifdef WINDOWSNT |
220 | extern Lisp_Object Vw32_get_true_file_attributes; | |
221 | #endif | |
222 | ||
84f6296a RS |
223 | extern int minibuf_level; |
224 | ||
a8c828be RS |
225 | extern int minibuffer_auto_raise; |
226 | ||
a65970a0 RS |
227 | /* These variables describe handlers that have "already" had a chance |
228 | to handle the current operation. | |
229 | ||
230 | Vinhibit_file_name_handlers is a list of file name handlers. | |
231 | Vinhibit_file_name_operation is the operation being handled. | |
232 | If we try to handle that operation, we ignore those handlers. */ | |
233 | ||
82c2d839 | 234 | static Lisp_Object Vinhibit_file_name_handlers; |
a65970a0 | 235 | static Lisp_Object Vinhibit_file_name_operation; |
82c2d839 | 236 | |
c0b7b21c | 237 | Lisp_Object Qfile_error, Qfile_already_exists, Qfile_date_error; |
505ab9bc | 238 | Lisp_Object Qexcl; |
15c65264 RS |
239 | Lisp_Object Qfile_name_history; |
240 | ||
d6a3cc15 RS |
241 | Lisp_Object Qcar_less_than_car; |
242 | ||
f57e2426 J |
243 | static int a_write (int, Lisp_Object, int, int, |
244 | Lisp_Object *, struct coding_system *); | |
245 | static int e_write (int, Lisp_Object, int, int, struct coding_system *); | |
ce51c54c | 246 | |
ec7adf26 | 247 | \f |
5d01d666 | 248 | void |
971de7fb | 249 | report_file_error (const char *string, Lisp_Object data) |
570d7624 JB |
250 | { |
251 | Lisp_Object errstring; | |
505ab9bc | 252 | int errorno = errno; |
d7259fdb | 253 | char *str; |
570d7624 | 254 | |
ca9c0567 | 255 | synchronize_system_messages_locale (); |
d7259fdb KH |
256 | str = strerror (errorno); |
257 | errstring = code_convert_string_norecord (make_unibyte_string (str, | |
258 | strlen (str)), | |
68c45bf0 PE |
259 | Vlocale_coding_system, 0); |
260 | ||
570d7624 | 261 | while (1) |
505ab9bc RS |
262 | switch (errorno) |
263 | { | |
264 | case EEXIST: | |
24b1ddad | 265 | xsignal (Qfile_already_exists, Fcons (errstring, data)); |
505ab9bc RS |
266 | break; |
267 | default: | |
268 | /* System error messages are capitalized. Downcase the initial | |
39824137 EZ |
269 | unless it is followed by a slash. (The slash case caters to |
270 | error messages that begin with "I/O" or, in German, "E/A".) */ | |
d5443ffd KH |
271 | if (STRING_MULTIBYTE (errstring) |
272 | && ! EQ (Faref (errstring, make_number (1)), make_number ('/'))) | |
6c0969ca KH |
273 | { |
274 | int c; | |
275 | ||
276 | str = (char *) SDATA (errstring); | |
62a6e103 | 277 | c = STRING_CHAR (str); |
c7c7a80c | 278 | Faset (errstring, make_number (0), make_number (DOWNCASE (c))); |
6c0969ca | 279 | } |
505ab9bc | 280 | |
24b1ddad | 281 | xsignal (Qfile_error, |
505ab9bc RS |
282 | Fcons (build_string (string), Fcons (errstring, data))); |
283 | } | |
570d7624 | 284 | } |
b5148e85 | 285 | |
b27a1703 | 286 | Lisp_Object |
971de7fb | 287 | close_file_unwind (Lisp_Object fd) |
b5148e85 | 288 | { |
68c45bf0 | 289 | emacs_close (XFASTINT (fd)); |
b27a1703 | 290 | return Qnil; |
b5148e85 | 291 | } |
a1d2b64a RS |
292 | |
293 | /* Restore point, having saved it as a marker. */ | |
294 | ||
5dcde606 | 295 | Lisp_Object |
971de7fb | 296 | restore_point_unwind (Lisp_Object location) |
a1d2b64a | 297 | { |
ec7adf26 | 298 | Fgoto_char (location); |
a1d2b64a | 299 | Fset_marker (location, Qnil, Qnil); |
b27a1703 | 300 | return Qnil; |
a1d2b64a | 301 | } |
59c94f03 | 302 | |
570d7624 | 303 | \f |
0bf2eed2 | 304 | Lisp_Object Qexpand_file_name; |
273e0829 | 305 | Lisp_Object Qsubstitute_in_file_name; |
0bf2eed2 RS |
306 | Lisp_Object Qdirectory_file_name; |
307 | Lisp_Object Qfile_name_directory; | |
308 | Lisp_Object Qfile_name_nondirectory; | |
642ef245 | 309 | Lisp_Object Qunhandled_file_name_directory; |
0bf2eed2 | 310 | Lisp_Object Qfile_name_as_directory; |
32f4334d | 311 | Lisp_Object Qcopy_file; |
a6e6e718 | 312 | Lisp_Object Qmake_directory_internal; |
b272d624 | 313 | Lisp_Object Qmake_directory; |
9d8f3bd9 | 314 | Lisp_Object Qdelete_directory_internal; |
32f4334d RS |
315 | Lisp_Object Qdelete_file; |
316 | Lisp_Object Qrename_file; | |
317 | Lisp_Object Qadd_name_to_file; | |
318 | Lisp_Object Qmake_symbolic_link; | |
319 | Lisp_Object Qfile_exists_p; | |
320 | Lisp_Object Qfile_executable_p; | |
321 | Lisp_Object Qfile_readable_p; | |
32f4334d | 322 | Lisp_Object Qfile_writable_p; |
1f8653eb RS |
323 | Lisp_Object Qfile_symlink_p; |
324 | Lisp_Object Qaccess_file; | |
32f4334d | 325 | Lisp_Object Qfile_directory_p; |
adedc71d | 326 | Lisp_Object Qfile_regular_p; |
32f4334d RS |
327 | Lisp_Object Qfile_accessible_directory_p; |
328 | Lisp_Object Qfile_modes; | |
329 | Lisp_Object Qset_file_modes; | |
819da85b | 330 | Lisp_Object Qset_file_times; |
574c05e2 KK |
331 | Lisp_Object Qfile_selinux_context; |
332 | Lisp_Object Qset_file_selinux_context; | |
32f4334d RS |
333 | Lisp_Object Qfile_newer_than_file_p; |
334 | Lisp_Object Qinsert_file_contents; | |
335 | Lisp_Object Qwrite_region; | |
336 | Lisp_Object Qverify_visited_file_modtime; | |
3ec46acd | 337 | Lisp_Object Qset_visited_file_modtime; |
32f4334d | 338 | |
49307295 | 339 | DEFUN ("find-file-name-handler", Ffind_file_name_handler, Sfind_file_name_handler, 2, 2, 0, |
8c1a1077 PJ |
340 | doc: /* Return FILENAME's handler function for OPERATION, if it has one. |
341 | Otherwise, return nil. | |
342 | A file name is handled if one of the regular expressions in | |
343 | `file-name-handler-alist' matches it. | |
344 | ||
345 | If OPERATION equals `inhibit-file-name-operation', then we ignore | |
346 | any handlers that are members of `inhibit-file-name-handlers', | |
347 | but we still do run any other handlers. This lets handlers | |
348 | use the standard functions without calling themselves recursively. */) | |
5842a27b | 349 | (Lisp_Object filename, Lisp_Object operation) |
32f4334d | 350 | { |
642ef245 | 351 | /* This function must not munge the match data. */ |
204ee271 | 352 | Lisp_Object chain, inhibited_handlers, result; |
8d2ced53 | 353 | int pos = -1; |
642ef245 | 354 | |
204ee271 | 355 | result = Qnil; |
b7826503 | 356 | CHECK_STRING (filename); |
e4432095 | 357 | |
a65970a0 RS |
358 | if (EQ (operation, Vinhibit_file_name_operation)) |
359 | inhibited_handlers = Vinhibit_file_name_handlers; | |
360 | else | |
361 | inhibited_handlers = Qnil; | |
82c2d839 | 362 | |
93c30b5f | 363 | for (chain = Vfile_name_handler_alist; CONSP (chain); |
03699b14 | 364 | chain = XCDR (chain)) |
32f4334d RS |
365 | { |
366 | Lisp_Object elt; | |
03699b14 | 367 | elt = XCAR (chain); |
93c30b5f | 368 | if (CONSP (elt)) |
32f4334d | 369 | { |
f6c9b683 | 370 | Lisp_Object string = XCAR (elt); |
8d2ced53 | 371 | int match_pos; |
f6c9b683 | 372 | Lisp_Object handler = XCDR (elt); |
68780e2a RS |
373 | Lisp_Object operations = Qnil; |
374 | ||
375 | if (SYMBOLP (handler)) | |
376 | operations = Fget (handler, Qoperations); | |
f6c9b683 | 377 | |
8d2ced53 | 378 | if (STRINGP (string) |
f6c9b683 RS |
379 | && (match_pos = fast_string_match (string, filename)) > pos |
380 | && (NILP (operations) || ! NILP (Fmemq (operation, operations)))) | |
a65970a0 | 381 | { |
f6c9b683 | 382 | Lisp_Object tem; |
a65970a0 | 383 | |
03699b14 | 384 | handler = XCDR (elt); |
a65970a0 RS |
385 | tem = Fmemq (handler, inhibited_handlers); |
386 | if (NILP (tem)) | |
8d2ced53 SM |
387 | { |
388 | result = handler; | |
389 | pos = match_pos; | |
390 | } | |
a65970a0 | 391 | } |
32f4334d | 392 | } |
642ef245 JB |
393 | |
394 | QUIT; | |
32f4334d | 395 | } |
8d2ced53 | 396 | return result; |
32f4334d RS |
397 | } |
398 | \f | |
570d7624 | 399 | DEFUN ("file-name-directory", Ffile_name_directory, Sfile_name_directory, |
8c1a1077 PJ |
400 | 1, 1, 0, |
401 | doc: /* Return the directory component in file name FILENAME. | |
402 | Return nil if FILENAME does not include a directory. | |
78379264 | 403 | Otherwise return a directory name. |
7c2fb837 | 404 | Given a Unix syntax file name, returns a string ending in slash. */) |
5842a27b | 405 | (Lisp_Object filename) |
570d7624 | 406 | { |
100c44b7 | 407 | #ifndef DOS_NT |
19290c65 | 408 | register const unsigned char *beg; |
100c44b7 EZ |
409 | #else |
410 | register unsigned char *beg; | |
411 | #endif | |
19290c65 | 412 | register const unsigned char *p; |
0bf2eed2 | 413 | Lisp_Object handler; |
570d7624 | 414 | |
b7826503 | 415 | CHECK_STRING (filename); |
570d7624 | 416 | |
0bf2eed2 RS |
417 | /* If the file name has special constructs in it, |
418 | call the corresponding file handler. */ | |
3b7f6e60 | 419 | handler = Ffind_file_name_handler (filename, Qfile_name_directory); |
0bf2eed2 | 420 | if (!NILP (handler)) |
3b7f6e60 | 421 | return call2 (handler, Qfile_name_directory, filename); |
0bf2eed2 | 422 | |
3b7f6e60 | 423 | filename = FILE_SYSTEM_CASE (filename); |
199607e4 | 424 | #ifdef DOS_NT |
0f3f018c | 425 | beg = (unsigned char *) alloca (SBYTES (filename) + 1); |
72af86bd | 426 | memcpy (beg, SDATA (filename), SBYTES (filename) + 1); |
0f3f018c CY |
427 | #else |
428 | beg = SDATA (filename); | |
199607e4 | 429 | #endif |
d5db4077 | 430 | p = beg + SBYTES (filename); |
570d7624 | 431 | |
199607e4 | 432 | while (p != beg && !IS_DIRECTORY_SEP (p[-1]) |
199607e4 | 433 | #ifdef DOS_NT |
ba14e174 RS |
434 | /* only recognise drive specifier at the beginning */ |
435 | && !(p[-1] == ':' | |
436 | /* handle the "/:d:foo" and "/:foo" cases correctly */ | |
437 | && ((p == beg + 2 && !IS_DIRECTORY_SEP (*beg)) | |
438 | || (p == beg + 4 && IS_DIRECTORY_SEP (*beg)))) | |
199607e4 | 439 | #endif |
570d7624 JB |
440 | ) p--; |
441 | ||
442 | if (p == beg) | |
443 | return Qnil; | |
5e570b75 | 444 | #ifdef DOS_NT |
4c3c22f3 | 445 | /* Expansion of "c:" to drive and default directory. */ |
ba14e174 | 446 | if (p[-1] == ':') |
4c3c22f3 | 447 | { |
4c3c22f3 | 448 | /* MAXPATHLEN+1 is guaranteed to be enough space for getdefdir. */ |
199607e4 | 449 | unsigned char *res = alloca (MAXPATHLEN + 1); |
ba14e174 RS |
450 | unsigned char *r = res; |
451 | ||
452 | if (p == beg + 4 && IS_DIRECTORY_SEP (*beg) && beg[1] == ':') | |
453 | { | |
454 | strncpy (res, beg, 2); | |
455 | beg += 2; | |
456 | r += 2; | |
457 | } | |
458 | ||
459 | if (getdefdir (toupper (*beg) - 'A' + 1, r)) | |
4c3c22f3 | 460 | { |
199607e4 | 461 | if (!IS_DIRECTORY_SEP (res[strlen (res) - 1])) |
4c3c22f3 RS |
462 | strcat (res, "/"); |
463 | beg = res; | |
464 | p = beg + strlen (beg); | |
465 | } | |
466 | } | |
087fc47a | 467 | dostounix_filename (beg); |
5e570b75 | 468 | #endif /* DOS_NT */ |
60d67b83 | 469 | |
d7231f93 | 470 | return make_specified_string (beg, -1, p - beg, STRING_MULTIBYTE (filename)); |
570d7624 JB |
471 | } |
472 | ||
60d67b83 RS |
473 | DEFUN ("file-name-nondirectory", Ffile_name_nondirectory, |
474 | Sfile_name_nondirectory, 1, 1, 0, | |
8c1a1077 PJ |
475 | doc: /* Return file name FILENAME sans its directory. |
476 | For example, in a Unix-syntax file name, | |
477 | this is everything after the last slash, | |
478 | or the entire name if it contains no slash. */) | |
5842a27b | 479 | (Lisp_Object filename) |
570d7624 | 480 | { |
19290c65 | 481 | register const unsigned char *beg, *p, *end; |
0bf2eed2 | 482 | Lisp_Object handler; |
570d7624 | 483 | |
b7826503 | 484 | CHECK_STRING (filename); |
570d7624 | 485 | |
0bf2eed2 RS |
486 | /* If the file name has special constructs in it, |
487 | call the corresponding file handler. */ | |
3b7f6e60 | 488 | handler = Ffind_file_name_handler (filename, Qfile_name_nondirectory); |
0bf2eed2 | 489 | if (!NILP (handler)) |
3b7f6e60 | 490 | return call2 (handler, Qfile_name_nondirectory, filename); |
0bf2eed2 | 491 | |
d5db4077 KR |
492 | beg = SDATA (filename); |
493 | end = p = beg + SBYTES (filename); | |
570d7624 | 494 | |
199607e4 | 495 | while (p != beg && !IS_DIRECTORY_SEP (p[-1]) |
199607e4 RS |
496 | #ifdef DOS_NT |
497 | /* only recognise drive specifier at beginning */ | |
ba14e174 RS |
498 | && !(p[-1] == ':' |
499 | /* handle the "/:d:foo" case correctly */ | |
500 | && (p == beg + 2 || (p == beg + 4 && IS_DIRECTORY_SEP (*beg)))) | |
199607e4 | 501 | #endif |
60d67b83 RS |
502 | ) |
503 | p--; | |
570d7624 | 504 | |
d7231f93 | 505 | return make_specified_string (p, -1, end - p, STRING_MULTIBYTE (filename)); |
570d7624 | 506 | } |
642ef245 | 507 | |
60d67b83 RS |
508 | DEFUN ("unhandled-file-name-directory", Funhandled_file_name_directory, |
509 | Sunhandled_file_name_directory, 1, 1, 0, | |
8c1a1077 PJ |
510 | doc: /* Return a directly usable directory name somehow associated with FILENAME. |
511 | A `directly usable' directory name is one that may be used without the | |
512 | intervention of any file handler. | |
513 | If FILENAME is a directly usable file itself, return | |
514 | \(file-name-directory FILENAME). | |
ca319910 SM |
515 | If FILENAME refers to a file which is not accessible from a local process, |
516 | then this should return nil. | |
8c1a1077 PJ |
517 | The `call-process' and `start-process' functions use this function to |
518 | get a current directory to run processes in. */) | |
5842a27b | 519 | (Lisp_Object filename) |
642ef245 JB |
520 | { |
521 | Lisp_Object handler; | |
522 | ||
523 | /* If the file name has special constructs in it, | |
524 | call the corresponding file handler. */ | |
49307295 | 525 | handler = Ffind_file_name_handler (filename, Qunhandled_file_name_directory); |
642ef245 JB |
526 | if (!NILP (handler)) |
527 | return call2 (handler, Qunhandled_file_name_directory, filename); | |
528 | ||
529 | return Ffile_name_directory (filename); | |
530 | } | |
531 | ||
570d7624 JB |
532 | \f |
533 | char * | |
971de7fb | 534 | file_name_as_directory (char *out, char *in) |
570d7624 JB |
535 | { |
536 | int size = strlen (in) - 1; | |
537 | ||
538 | strcpy (out, in); | |
539 | ||
8aa3a244 RS |
540 | if (size < 0) |
541 | { | |
154a307d KH |
542 | out[0] = '.'; |
543 | out[1] = '/'; | |
544 | out[2] = 0; | |
8aa3a244 RS |
545 | return out; |
546 | } | |
547 | ||
570d7624 | 548 | /* For Unix syntax, Append a slash if necessary */ |
199607e4 | 549 | if (!IS_DIRECTORY_SEP (out[size])) |
5e570b75 | 550 | { |
087fc47a | 551 | out[size + 1] = DIRECTORY_SEP; |
5e570b75 RS |
552 | out[size + 2] = '\0'; |
553 | } | |
199607e4 | 554 | #ifdef DOS_NT |
087fc47a | 555 | dostounix_filename (out); |
199607e4 | 556 | #endif |
570d7624 JB |
557 | return out; |
558 | } | |
559 | ||
560 | DEFUN ("file-name-as-directory", Ffile_name_as_directory, | |
561 | Sfile_name_as_directory, 1, 1, 0, | |
0dac4f85 | 562 | doc: /* Return a string representing the file name FILE interpreted as a directory. |
8c1a1077 PJ |
563 | This operation exists because a directory is also a file, but its name as |
564 | a directory is different from its name as a file. | |
565 | The result can be used as the value of `default-directory' | |
566 | or passed as second argument to `expand-file-name'. | |
7c2fb837 | 567 | For a Unix-syntax file name, just appends a slash. */) |
5842a27b | 568 | (Lisp_Object file) |
570d7624 JB |
569 | { |
570 | char *buf; | |
0bf2eed2 | 571 | Lisp_Object handler; |
570d7624 | 572 | |
b7826503 | 573 | CHECK_STRING (file); |
265a9e55 | 574 | if (NILP (file)) |
570d7624 | 575 | return Qnil; |
0bf2eed2 RS |
576 | |
577 | /* If the file name has special constructs in it, | |
578 | call the corresponding file handler. */ | |
49307295 | 579 | handler = Ffind_file_name_handler (file, Qfile_name_as_directory); |
0bf2eed2 RS |
580 | if (!NILP (handler)) |
581 | return call2 (handler, Qfile_name_as_directory, file); | |
582 | ||
d5db4077 | 583 | buf = (char *) alloca (SBYTES (file) + 10); |
d7231f93 KH |
584 | file_name_as_directory (buf, SDATA (file)); |
585 | return make_specified_string (buf, -1, strlen (buf), | |
586 | STRING_MULTIBYTE (file)); | |
570d7624 JB |
587 | } |
588 | \f | |
589 | /* | |
590 | * Convert from directory name to filename. | |
199607e4 | 591 | * On UNIX, it's simple: just make sure there isn't a terminating / |
570d7624 JB |
592 | |
593 | * Value is nonzero if the string output is different from the input. | |
594 | */ | |
595 | ||
dfcf069d | 596 | int |
971de7fb | 597 | directory_file_name (char *src, char *dst) |
570d7624 JB |
598 | { |
599 | long slen; | |
570d7624 JB |
600 | |
601 | slen = strlen (src); | |
7c2fb837 | 602 | |
570d7624 JB |
603 | /* Process as Unix format: just remove any final slash. |
604 | But leave "/" unchanged; do not change it to "". */ | |
605 | strcpy (dst, src); | |
199607e4 | 606 | if (slen > 1 |
5e570b75 | 607 | && IS_DIRECTORY_SEP (dst[slen - 1]) |
4592782e RS |
608 | #ifdef DOS_NT |
609 | && !IS_ANY_SEP (dst[slen - 2]) | |
610 | #endif | |
611 | ) | |
570d7624 | 612 | dst[slen - 1] = 0; |
199607e4 | 613 | #ifdef DOS_NT |
087fc47a | 614 | dostounix_filename (dst); |
125feee8 | 615 | #endif |
570d7624 JB |
616 | return 1; |
617 | } | |
618 | ||
619 | DEFUN ("directory-file-name", Fdirectory_file_name, Sdirectory_file_name, | |
8c1a1077 PJ |
620 | 1, 1, 0, |
621 | doc: /* Returns the file name of the directory named DIRECTORY. | |
622 | This is the name of the file that holds the data for the directory DIRECTORY. | |
623 | This operation exists because a directory is also a file, but its name as | |
624 | a directory is different from its name as a file. | |
7c2fb837 | 625 | In Unix-syntax, this function just removes the final slash. */) |
5842a27b | 626 | (Lisp_Object directory) |
570d7624 JB |
627 | { |
628 | char *buf; | |
0bf2eed2 | 629 | Lisp_Object handler; |
570d7624 | 630 | |
b7826503 | 631 | CHECK_STRING (directory); |
570d7624 | 632 | |
265a9e55 | 633 | if (NILP (directory)) |
570d7624 | 634 | return Qnil; |
0bf2eed2 RS |
635 | |
636 | /* If the file name has special constructs in it, | |
637 | call the corresponding file handler. */ | |
49307295 | 638 | handler = Ffind_file_name_handler (directory, Qdirectory_file_name); |
0bf2eed2 RS |
639 | if (!NILP (handler)) |
640 | return call2 (handler, Qdirectory_file_name, directory); | |
641 | ||
d5db4077 | 642 | buf = (char *) alloca (SBYTES (directory) + 20); |
d5db4077 | 643 | directory_file_name (SDATA (directory), buf); |
d7231f93 KH |
644 | return make_specified_string (buf, -1, strlen (buf), |
645 | STRING_MULTIBYTE (directory)); | |
570d7624 JB |
646 | } |
647 | ||
91433552 | 648 | static const char make_temp_name_tbl[64] = |
3ce839e4 RS |
649 | { |
650 | 'A','B','C','D','E','F','G','H', | |
651 | 'I','J','K','L','M','N','O','P', | |
652 | 'Q','R','S','T','U','V','W','X', | |
653 | 'Y','Z','a','b','c','d','e','f', | |
654 | 'g','h','i','j','k','l','m','n', | |
655 | 'o','p','q','r','s','t','u','v', | |
656 | 'w','x','y','z','0','1','2','3', | |
657 | '4','5','6','7','8','9','-','_' | |
658 | }; | |
cb613bb8 | 659 | |
3ce839e4 RS |
660 | static unsigned make_temp_name_count, make_temp_name_count_initialized_p; |
661 | ||
cb613bb8 | 662 | /* Value is a temporary file name starting with PREFIX, a string. |
efdc16c9 | 663 | |
cb613bb8 GM |
664 | The Emacs process number forms part of the result, so there is |
665 | no danger of generating a name being used by another process. | |
666 | In addition, this function makes an attempt to choose a name | |
667 | which has no existing file. To make this work, PREFIX should be | |
668 | an absolute file name. | |
efdc16c9 | 669 | |
cb613bb8 GM |
670 | BASE64_P non-zero means add the pid as 3 characters in base64 |
671 | encoding. In this case, 6 characters will be added to PREFIX to | |
672 | form the file name. Otherwise, if Emacs is running on a system | |
673 | with long file names, add the pid as a decimal number. | |
674 | ||
675 | This function signals an error if no unique file name could be | |
676 | generated. */ | |
677 | ||
678 | Lisp_Object | |
971de7fb | 679 | make_temp_name (Lisp_Object prefix, int base64_p) |
570d7624 JB |
680 | { |
681 | Lisp_Object val; | |
0cedd530 | 682 | int len, clen; |
3ce839e4 RS |
683 | int pid; |
684 | unsigned char *p, *data; | |
685 | char pidbuf[20]; | |
686 | int pidlen; | |
efdc16c9 | 687 | |
b7826503 | 688 | CHECK_STRING (prefix); |
3ce839e4 RS |
689 | |
690 | /* VAL is created by adding 6 characters to PREFIX. The first | |
691 | three are the PID of this process, in base 64, and the second | |
692 | three are incremented if the file already exists. This ensures | |
693 | 262144 unique file names per PID per PREFIX. */ | |
694 | ||
695 | pid = (int) getpid (); | |
696 | ||
cb613bb8 GM |
697 | if (base64_p) |
698 | { | |
699 | pidbuf[0] = make_temp_name_tbl[pid & 63], pid >>= 6; | |
700 | pidbuf[1] = make_temp_name_tbl[pid & 63], pid >>= 6; | |
701 | pidbuf[2] = make_temp_name_tbl[pid & 63], pid >>= 6; | |
702 | pidlen = 3; | |
703 | } | |
704 | else | |
705 | { | |
3ce839e4 | 706 | #ifdef HAVE_LONG_FILE_NAMES |
cb613bb8 GM |
707 | sprintf (pidbuf, "%d", pid); |
708 | pidlen = strlen (pidbuf); | |
3a3bfb18 | 709 | #else |
cb613bb8 GM |
710 | pidbuf[0] = make_temp_name_tbl[pid & 63], pid >>= 6; |
711 | pidbuf[1] = make_temp_name_tbl[pid & 63], pid >>= 6; | |
712 | pidbuf[2] = make_temp_name_tbl[pid & 63], pid >>= 6; | |
713 | pidlen = 3; | |
3ce839e4 | 714 | #endif |
cb613bb8 | 715 | } |
efdc16c9 | 716 | |
0cedd530 SM |
717 | len = SBYTES (prefix); clen = SCHARS (prefix); |
718 | val = make_uninit_multibyte_string (clen + 3 + pidlen, len + 3 + pidlen); | |
719 | if (!STRING_MULTIBYTE (prefix)) | |
720 | STRING_SET_UNIBYTE (val); | |
d5db4077 | 721 | data = SDATA (val); |
72af86bd | 722 | memcpy (data, SDATA (prefix), len); |
3ce839e4 RS |
723 | p = data + len; |
724 | ||
72af86bd | 725 | memcpy (p, pidbuf, pidlen); |
3ce839e4 RS |
726 | p += pidlen; |
727 | ||
728 | /* Here we try to minimize useless stat'ing when this function is | |
729 | invoked many times successively with the same PREFIX. We achieve | |
730 | this by initializing count to a random value, and incrementing it | |
f6a492a9 RS |
731 | afterwards. |
732 | ||
733 | We don't want make-temp-name to be called while dumping, | |
734 | because then make_temp_name_count_initialized_p would get set | |
735 | and then make_temp_name_count would not be set when Emacs starts. */ | |
736 | ||
3ce839e4 RS |
737 | if (!make_temp_name_count_initialized_p) |
738 | { | |
739 | make_temp_name_count = (unsigned) time (NULL); | |
740 | make_temp_name_count_initialized_p = 1; | |
741 | } | |
742 | ||
743 | while (1) | |
744 | { | |
745 | struct stat ignored; | |
8a7777fc | 746 | unsigned num = make_temp_name_count; |
3ce839e4 RS |
747 | |
748 | p[0] = make_temp_name_tbl[num & 63], num >>= 6; | |
749 | p[1] = make_temp_name_tbl[num & 63], num >>= 6; | |
750 | p[2] = make_temp_name_tbl[num & 63], num >>= 6; | |
751 | ||
8a7777fc RS |
752 | /* Poor man's congruential RN generator. Replace with |
753 | ++make_temp_name_count for debugging. */ | |
754 | make_temp_name_count += 25229; | |
755 | make_temp_name_count %= 225307; | |
756 | ||
3ce839e4 RS |
757 | if (stat (data, &ignored) < 0) |
758 | { | |
759 | /* We want to return only if errno is ENOENT. */ | |
760 | if (errno == ENOENT) | |
761 | return val; | |
762 | else | |
763 | /* The error here is dubious, but there is little else we | |
764 | can do. The alternatives are to return nil, which is | |
765 | as bad as (and in many cases worse than) throwing the | |
766 | error, or to ignore the error, which will likely result | |
8a7777fc RS |
767 | in looping through 225307 stat's, which is not only |
768 | dog-slow, but also useless since it will fallback to | |
769 | the errow below, anyway. */ | |
9869bb0b | 770 | report_file_error ("Cannot create temporary name for prefix", |
3ce839e4 RS |
771 | Fcons (prefix, Qnil)); |
772 | /* not reached */ | |
773 | } | |
774 | } | |
775 | ||
776 | error ("Cannot create temporary name for prefix `%s'", | |
d5db4077 | 777 | SDATA (prefix)); |
3ce839e4 | 778 | return Qnil; |
570d7624 | 779 | } |
3ce839e4 | 780 | |
cb613bb8 GM |
781 | |
782 | DEFUN ("make-temp-name", Fmake_temp_name, Smake_temp_name, 1, 1, 0, | |
8c1a1077 PJ |
783 | doc: /* Generate temporary file name (string) starting with PREFIX (a string). |
784 | The Emacs process number forms part of the result, | |
785 | so there is no danger of generating a name being used by another process. | |
786 | ||
787 | In addition, this function makes an attempt to choose a name | |
788 | which has no existing file. To make this work, | |
789 | PREFIX should be an absolute file name. | |
790 | ||
791 | There is a race condition between calling `make-temp-name' and creating the | |
792 | file which opens all kinds of security holes. For that reason, you should | |
f9e6f049 RS |
793 | probably use `make-temp-file' instead, except in three circumstances: |
794 | ||
795 | * If you are creating the file in the user's home directory. | |
796 | * If you are creating a directory rather than an ordinary file. | |
797 | * If you are taking special precautions as `make-temp-file' does. */) | |
5842a27b | 798 | (Lisp_Object prefix) |
cb613bb8 GM |
799 | { |
800 | return make_temp_name (prefix, 0); | |
801 | } | |
802 | ||
803 | ||
570d7624 JB |
804 | \f |
805 | DEFUN ("expand-file-name", Fexpand_file_name, Sexpand_file_name, 1, 2, 0, | |
8c1a1077 PJ |
806 | doc: /* Convert filename NAME to absolute, and canonicalize it. |
807 | Second arg DEFAULT-DIRECTORY is directory to start with if NAME is relative | |
78379264 | 808 | \(does not start with slash or tilde); if DEFAULT-DIRECTORY is nil or missing, |
a4e03fe5 | 809 | the current buffer's value of `default-directory' is used. |
8c1a1077 PJ |
810 | File name components that are `.' are removed, and |
811 | so are file name components followed by `..', along with the `..' itself; | |
812 | note that these simplifications are done without checking the resulting | |
813 | file names in the file system. | |
814 | An initial `~/' expands to your home directory. | |
815 | An initial `~USER/' expands to USER's home directory. | |
07114296 CY |
816 | See also the function `substitute-in-file-name'. |
817 | ||
818 | For technical reasons, this function can return correct but | |
819 | non-intuitive results for the root directory; for instance, | |
820 | \(expand-file-name ".." "/") returns "/..". For this reason, use | |
821 | (directory-file-name (file-name-directory dirname)) to traverse a | |
822 | filesystem tree, not (expand-file-name ".." dirname). */) | |
5842a27b | 823 | (Lisp_Object name, Lisp_Object default_directory) |
570d7624 | 824 | { |
5b5a2ea1 SM |
825 | /* These point to SDATA and need to be careful with string-relocation |
826 | during GC (via DECODE_FILE). */ | |
827 | unsigned char *nm, *newdir; | |
828 | /* This should only point to alloca'd data. */ | |
829 | unsigned char *target; | |
199607e4 | 830 | |
570d7624 | 831 | int tlen; |
570d7624 | 832 | struct passwd *pw; |
5e570b75 | 833 | #ifdef DOS_NT |
199607e4 | 834 | int drive = 0; |
9a1dc3be | 835 | int collapse_newdir = 1; |
f0f95d31 | 836 | int is_escaped = 0; |
5e570b75 | 837 | #endif /* DOS_NT */ |
199607e4 | 838 | int length; |
beb402de | 839 | Lisp_Object handler, result; |
2b046a72 | 840 | int multibyte; |
9c06a1f3 | 841 | Lisp_Object hdir; |
199607e4 | 842 | |
b7826503 | 843 | CHECK_STRING (name); |
570d7624 | 844 | |
0bf2eed2 RS |
845 | /* If the file name has special constructs in it, |
846 | call the corresponding file handler. */ | |
49307295 | 847 | handler = Ffind_file_name_handler (name, Qexpand_file_name); |
0bf2eed2 | 848 | if (!NILP (handler)) |
3b7f6e60 | 849 | return call3 (handler, Qexpand_file_name, name, default_directory); |
58fc9587 | 850 | |
3b7f6e60 EN |
851 | /* Use the buffer's default-directory if DEFAULT_DIRECTORY is omitted. */ |
852 | if (NILP (default_directory)) | |
853 | default_directory = current_buffer->directory; | |
82330e7f | 854 | if (! STRINGP (default_directory)) |
dd693537 EZ |
855 | { |
856 | #ifdef DOS_NT | |
857 | /* "/" is not considered a root directory on DOS_NT, so using "/" | |
858 | here causes an infinite recursion in, e.g., the following: | |
859 | ||
860 | (let (default-directory) | |
861 | (expand-file-name "a")) | |
862 | ||
863 | To avoid this, we set default_directory to the root of the | |
864 | current drive. */ | |
865 | extern char *emacs_root_dir (void); | |
866 | ||
867 | default_directory = build_string (emacs_root_dir ()); | |
868 | #else | |
869 | default_directory = build_string ("/"); | |
870 | #endif | |
871 | } | |
58fc9587 | 872 | |
3b7f6e60 | 873 | if (!NILP (default_directory)) |
273e0829 | 874 | { |
3b7f6e60 | 875 | handler = Ffind_file_name_handler (default_directory, Qexpand_file_name); |
273e0829 | 876 | if (!NILP (handler)) |
3b7f6e60 | 877 | return call3 (handler, Qexpand_file_name, name, default_directory); |
273e0829 | 878 | } |
0bf2eed2 | 879 | |
5b5a2ea1 SM |
880 | { |
881 | unsigned char *o = SDATA (default_directory); | |
882 | ||
883 | /* Make sure DEFAULT_DIRECTORY is properly expanded. | |
884 | It would be better to do this down below where we actually use | |
885 | default_directory. Unfortunately, calling Fexpand_file_name recursively | |
886 | could invoke GC, and the strings might be relocated. This would | |
887 | be annoying because we have pointers into strings lying around | |
888 | that would need adjusting, and people would add new pointers to | |
889 | the code and forget to adjust them, resulting in intermittent bugs. | |
890 | Putting this call here avoids all that crud. | |
891 | ||
892 | The EQ test avoids infinite recursion. */ | |
893 | if (! NILP (default_directory) && !EQ (default_directory, name) | |
894 | /* Save time in some common cases - as long as default_directory | |
895 | is not relative, it can be canonicalized with name below (if it | |
896 | is needed at all) without requiring it to be expanded now. */ | |
01937013 | 897 | #ifdef DOS_NT |
5b5a2ea1 SM |
898 | /* Detect MSDOS file names with drive specifiers. */ |
899 | && ! (IS_DRIVE (o[0]) && IS_DEVICE_SEP (o[1]) | |
900 | && IS_DIRECTORY_SEP (o[2])) | |
199607e4 | 901 | #ifdef WINDOWSNT |
5b5a2ea1 SM |
902 | /* Detect Windows file names in UNC format. */ |
903 | && ! (IS_DIRECTORY_SEP (o[0]) && IS_DIRECTORY_SEP (o[1])) | |
01937013 | 904 | #endif |
199607e4 RS |
905 | #else /* not DOS_NT */ |
906 | /* Detect Unix absolute file names (/... alone is not absolute on | |
907 | DOS or Windows). */ | |
5b5a2ea1 | 908 | && ! (IS_DIRECTORY_SEP (o[0])) |
199607e4 | 909 | #endif /* not DOS_NT */ |
5b5a2ea1 SM |
910 | ) |
911 | { | |
912 | struct gcpro gcpro1; | |
f14b1c68 | 913 | |
5b5a2ea1 SM |
914 | GCPRO1 (name); |
915 | default_directory = Fexpand_file_name (default_directory, Qnil); | |
916 | UNGCPRO; | |
917 | } | |
918 | } | |
4c3c22f3 | 919 | name = FILE_SYSTEM_CASE (name); |
2b046a72 | 920 | multibyte = STRING_MULTIBYTE (name); |
6d060996 KH |
921 | if (multibyte != STRING_MULTIBYTE (default_directory)) |
922 | { | |
923 | if (multibyte) | |
924 | default_directory = string_to_multibyte (default_directory); | |
925 | else | |
926 | { | |
927 | name = string_to_multibyte (name); | |
928 | multibyte = 1; | |
929 | } | |
930 | } | |
931 | ||
565f0b98 | 932 | /* Make a local copy of nm[] to protect it from GC in DECODE_FILE below. */ |
0f3f018c | 933 | nm = (unsigned char *) alloca (SBYTES (name) + 1); |
72af86bd | 934 | memcpy (nm, SDATA (name), SBYTES (name) + 1); |
199607e4 | 935 | |
565f0b98 | 936 | #ifdef DOS_NT |
f0f95d31 RS |
937 | /* Note if special escape prefix is present, but remove for now. */ |
938 | if (nm[0] == '/' && nm[1] == ':') | |
939 | { | |
940 | is_escaped = 1; | |
941 | nm += 2; | |
942 | } | |
943 | ||
199607e4 | 944 | /* Find and remove drive specifier if present; this makes nm absolute |
f0f95d31 RS |
945 | even if the rest of the name appears to be relative. Only look for |
946 | drive specifier at the beginning. */ | |
947 | if (IS_DRIVE (nm[0]) && IS_DEVICE_SEP (nm[1])) | |
948 | { | |
949 | drive = nm[0]; | |
950 | nm += 2; | |
951 | } | |
bb1ff1f4 GV |
952 | |
953 | #ifdef WINDOWSNT | |
954 | /* If we see "c://somedir", we want to strip the first slash after the | |
955 | colon when stripping the drive letter. Otherwise, this expands to | |
956 | "//somedir". */ | |
957 | if (drive && IS_DIRECTORY_SEP (nm[0]) && IS_DIRECTORY_SEP (nm[1])) | |
958 | nm++; | |
4c3c22f3 | 959 | |
199607e4 RS |
960 | /* Discard any previous drive specifier if nm is now in UNC format. */ |
961 | if (IS_DIRECTORY_SEP (nm[0]) && IS_DIRECTORY_SEP (nm[1])) | |
962 | { | |
963 | drive = 0; | |
964 | } | |
5b5a2ea1 SM |
965 | #endif /* WINDOWSNT */ |
966 | #endif /* DOS_NT */ | |
199607e4 | 967 | |
214378ec GM |
968 | /* If nm is absolute, look for `/./' or `/../' or `//''sequences; if |
969 | none are found, we can probably return right away. We will avoid | |
970 | allocating a new string if name is already fully expanded. */ | |
570d7624 | 971 | if ( |
5e570b75 | 972 | IS_DIRECTORY_SEP (nm[0]) |
199607e4 | 973 | #ifdef MSDOS |
f0f95d31 | 974 | && drive && !is_escaped |
199607e4 RS |
975 | #endif |
976 | #ifdef WINDOWSNT | |
f0f95d31 | 977 | && (drive || IS_DIRECTORY_SEP (nm[1])) && !is_escaped |
199607e4 | 978 | #endif |
570d7624 JB |
979 | ) |
980 | { | |
f14b1c68 JB |
981 | /* If it turns out that the filename we want to return is just a |
982 | suffix of FILENAME, we don't need to go through and edit | |
983 | things; we just need to construct a new string using data | |
984 | starting at the middle of FILENAME. If we set lose to a | |
985 | non-zero value, that means we've discovered that we can't do | |
986 | that cool trick. */ | |
987 | int lose = 0; | |
5b5a2ea1 | 988 | unsigned char *p = nm; |
f14b1c68 | 989 | |
570d7624 JB |
990 | while (*p) |
991 | { | |
199607e4 | 992 | /* Since we know the name is absolute, we can assume that each |
c77d647e JB |
993 | element starts with a "/". */ |
994 | ||
c77d647e | 995 | /* "." and ".." are hairy. */ |
5e570b75 | 996 | if (IS_DIRECTORY_SEP (p[0]) |
c77d647e | 997 | && p[1] == '.' |
5e570b75 | 998 | && (IS_DIRECTORY_SEP (p[2]) |
c77d647e | 999 | || p[2] == 0 |
5e570b75 | 1000 | || (p[2] == '.' && (IS_DIRECTORY_SEP (p[3]) |
c77d647e | 1001 | || p[3] == 0)))) |
570d7624 | 1002 | lose = 1; |
214378ec GM |
1003 | /* We want to replace multiple `/' in a row with a single |
1004 | slash. */ | |
1005 | else if (p > nm | |
1006 | && IS_DIRECTORY_SEP (p[0]) | |
1007 | && IS_DIRECTORY_SEP (p[1])) | |
1008 | lose = 1; | |
570d7624 JB |
1009 | p++; |
1010 | } | |
1011 | if (!lose) | |
1012 | { | |
199607e4 | 1013 | #ifdef DOS_NT |
087fc47a JB |
1014 | /* Make sure directories are all separated with /, but |
1015 | avoid allocation of a new string when not required. */ | |
1016 | dostounix_filename (nm); | |
199607e4 RS |
1017 | #ifdef WINDOWSNT |
1018 | if (IS_DIRECTORY_SEP (nm[1])) | |
1019 | { | |
d5db4077 | 1020 | if (strcmp (nm, SDATA (name)) != 0) |
2b046a72 | 1021 | name = make_specified_string (nm, -1, strlen (nm), multibyte); |
199607e4 RS |
1022 | } |
1023 | else | |
1024 | #endif | |
1025 | /* drive must be set, so this is okay */ | |
d5db4077 | 1026 | if (strcmp (nm - 2, SDATA (name)) != 0) |
199607e4 | 1027 | { |
3f817c73 KH |
1028 | char temp[] = " :"; |
1029 | ||
2b046a72 | 1030 | name = make_specified_string (nm, -1, p - nm, multibyte); |
3f817c73 KH |
1031 | temp[0] = DRIVE_LETTER (drive); |
1032 | name = concat2 (build_string (temp), name); | |
199607e4 RS |
1033 | } |
1034 | return name; | |
1035 | #else /* not DOS_NT */ | |
565f0b98 | 1036 | if (strcmp (nm, SDATA (name)) == 0) |
570d7624 | 1037 | return name; |
2b046a72 | 1038 | return make_specified_string (nm, -1, strlen (nm), multibyte); |
5e570b75 | 1039 | #endif /* not DOS_NT */ |
570d7624 JB |
1040 | } |
1041 | } | |
1042 | ||
199607e4 RS |
1043 | /* At this point, nm might or might not be an absolute file name. We |
1044 | need to expand ~ or ~user if present, otherwise prefix nm with | |
1045 | default_directory if nm is not absolute, and finally collapse /./ | |
1046 | and /foo/../ sequences. | |
1047 | ||
1048 | We set newdir to be the appropriate prefix if one is needed: | |
1049 | - the relevant user directory if nm starts with ~ or ~user | |
1050 | - the specified drive's working dir (DOS/NT only) if nm does not | |
1051 | start with / | |
1052 | - the value of default_directory. | |
1053 | ||
1054 | Note that these prefixes are not guaranteed to be absolute (except | |
1055 | for the working dir of a drive). Therefore, to ensure we always | |
1056 | return an absolute name, if the final prefix is not absolute we | |
1057 | append it to the current working directory. */ | |
570d7624 JB |
1058 | |
1059 | newdir = 0; | |
1060 | ||
1061 | if (nm[0] == '~') /* prefix ~ */ | |
c77d647e | 1062 | { |
5e570b75 | 1063 | if (IS_DIRECTORY_SEP (nm[1]) |
c77d647e JB |
1064 | || nm[1] == 0) /* ~ by itself */ |
1065 | { | |
6d557778 EZ |
1066 | Lisp_Object tem; |
1067 | ||
c77d647e JB |
1068 | if (!(newdir = (unsigned char *) egetenv ("HOME"))) |
1069 | newdir = (unsigned char *) ""; | |
199607e4 | 1070 | nm++; |
6d557778 EZ |
1071 | /* egetenv may return a unibyte string, which will bite us since |
1072 | we expect the directory to be multibyte. */ | |
9c06a1f3 EZ |
1073 | tem = build_string (newdir); |
1074 | if (!STRING_MULTIBYTE (tem)) | |
1075 | { | |
1076 | hdir = DECODE_FILE (tem); | |
1077 | newdir = SDATA (hdir); | |
1078 | } | |
5e570b75 | 1079 | #ifdef DOS_NT |
9a1dc3be | 1080 | collapse_newdir = 0; |
4c3c22f3 | 1081 | #endif |
c77d647e JB |
1082 | } |
1083 | else /* ~user/filename */ | |
1084 | { | |
5b5a2ea1 | 1085 | unsigned char *o, *p; |
7c2fb837 | 1086 | for (p = nm; *p && (!IS_DIRECTORY_SEP (*p)); p++); |
5b5a2ea1 | 1087 | o = alloca (p - nm + 1); |
72af86bd | 1088 | memcpy (o, nm, p - nm); |
c77d647e JB |
1089 | o [p - nm] = 0; |
1090 | ||
67c08d6c | 1091 | BLOCK_INPUT; |
c77d647e | 1092 | pw = (struct passwd *) getpwnam (o + 1); |
67c08d6c | 1093 | UNBLOCK_INPUT; |
c77d647e JB |
1094 | if (pw) |
1095 | { | |
1096 | newdir = (unsigned char *) pw -> pw_dir; | |
c77d647e | 1097 | nm = p; |
199607e4 | 1098 | #ifdef DOS_NT |
9a1dc3be | 1099 | collapse_newdir = 0; |
199607e4 | 1100 | #endif |
c77d647e | 1101 | } |
e5d77022 | 1102 | |
c77d647e JB |
1103 | /* If we don't find a user of that name, leave the name |
1104 | unchanged; don't move nm forward to p. */ | |
1105 | } | |
1106 | } | |
570d7624 | 1107 | |
5e570b75 | 1108 | #ifdef DOS_NT |
199607e4 RS |
1109 | /* On DOS and Windows, nm is absolute if a drive name was specified; |
1110 | use the drive's current directory as the prefix if needed. */ | |
1111 | if (!newdir && drive) | |
1112 | { | |
1113 | /* Get default directory if needed to make nm absolute. */ | |
1114 | if (!IS_DIRECTORY_SEP (nm[0])) | |
1115 | { | |
1116 | newdir = alloca (MAXPATHLEN + 1); | |
1117 | if (!getdefdir (toupper (drive) - 'A' + 1, newdir)) | |
1118 | newdir = NULL; | |
1119 | } | |
1120 | if (!newdir) | |
1121 | { | |
1122 | /* Either nm starts with /, or drive isn't mounted. */ | |
1123 | newdir = alloca (4); | |
f94988a7 | 1124 | newdir[0] = DRIVE_LETTER (drive); |
199607e4 RS |
1125 | newdir[1] = ':'; |
1126 | newdir[2] = '/'; | |
1127 | newdir[3] = 0; | |
1128 | } | |
1129 | } | |
5e570b75 | 1130 | #endif /* DOS_NT */ |
199607e4 RS |
1131 | |
1132 | /* Finally, if no prefix has been specified and nm is not absolute, | |
1133 | then it must be expanded relative to default_directory. */ | |
1134 | ||
34097368 | 1135 | if (1 |
199607e4 RS |
1136 | #ifndef DOS_NT |
1137 | /* /... alone is not absolute on DOS and Windows. */ | |
34097368 | 1138 | && !IS_DIRECTORY_SEP (nm[0]) |
199607e4 RS |
1139 | #endif |
1140 | #ifdef WINDOWSNT | |
34097368 | 1141 | && !(IS_DIRECTORY_SEP (nm[0]) && IS_DIRECTORY_SEP (nm[1])) |
199607e4 | 1142 | #endif |
570d7624 JB |
1143 | && !newdir) |
1144 | { | |
d5db4077 | 1145 | newdir = SDATA (default_directory); |
f0f95d31 RS |
1146 | #ifdef DOS_NT |
1147 | /* Note if special escape prefix is present, but remove for now. */ | |
1148 | if (newdir[0] == '/' && newdir[1] == ':') | |
1149 | { | |
1150 | is_escaped = 1; | |
1151 | newdir += 2; | |
1152 | } | |
1153 | #endif | |
570d7624 JB |
1154 | } |
1155 | ||
5e570b75 | 1156 | #ifdef DOS_NT |
199607e4 RS |
1157 | if (newdir) |
1158 | { | |
1159 | /* First ensure newdir is an absolute name. */ | |
1160 | if ( | |
1161 | /* Detect MSDOS file names with drive specifiers. */ | |
1162 | ! (IS_DRIVE (newdir[0]) | |
1163 | && IS_DEVICE_SEP (newdir[1]) && IS_DIRECTORY_SEP (newdir[2])) | |
1164 | #ifdef WINDOWSNT | |
1165 | /* Detect Windows file names in UNC format. */ | |
1166 | && ! (IS_DIRECTORY_SEP (newdir[0]) && IS_DIRECTORY_SEP (newdir[1])) | |
1167 | #endif | |
1168 | ) | |
1169 | { | |
1170 | /* Effectively, let newdir be (expand-file-name newdir cwd). | |
1171 | Because of the admonition against calling expand-file-name | |
1172 | when we have pointers into lisp strings, we accomplish this | |
1173 | indirectly by prepending newdir to nm if necessary, and using | |
1174 | cwd (or the wd of newdir's drive) as the new newdir. */ | |
1175 | ||
c70a4df6 | 1176 | if (IS_DRIVE (newdir[0]) && IS_DEVICE_SEP (newdir[1])) |
199607e4 RS |
1177 | { |
1178 | drive = newdir[0]; | |
1179 | newdir += 2; | |
1180 | } | |
1181 | if (!IS_DIRECTORY_SEP (nm[0])) | |
1182 | { | |
1183 | char * tmp = alloca (strlen (newdir) + strlen (nm) + 2); | |
1184 | file_name_as_directory (tmp, newdir); | |
1185 | strcat (tmp, nm); | |
1186 | nm = tmp; | |
1187 | } | |
1188 | newdir = alloca (MAXPATHLEN + 1); | |
1189 | if (drive) | |
1190 | { | |
1191 | if (!getdefdir (toupper (drive) - 'A' + 1, newdir)) | |
1192 | newdir = "/"; | |
1193 | } | |
1194 | else | |
1195 | getwd (newdir); | |
1196 | } | |
1197 | ||
1198 | /* Strip off drive name from prefix, if present. */ | |
c70a4df6 | 1199 | if (IS_DRIVE (newdir[0]) && IS_DEVICE_SEP (newdir[1])) |
199607e4 RS |
1200 | { |
1201 | drive = newdir[0]; | |
1202 | newdir += 2; | |
1203 | } | |
1204 | ||
1205 | /* Keep only a prefix from newdir if nm starts with slash | |
82330e7f | 1206 | (//server/share for UNC, nothing otherwise). */ |
9a1dc3be | 1207 | if (IS_DIRECTORY_SEP (nm[0]) && collapse_newdir) |
199607e4 RS |
1208 | { |
1209 | #ifdef WINDOWSNT | |
1210 | if (IS_DIRECTORY_SEP (newdir[0]) && IS_DIRECTORY_SEP (newdir[1])) | |
1211 | { | |
f5acc071 | 1212 | unsigned char *p; |
199607e4 RS |
1213 | newdir = strcpy (alloca (strlen (newdir) + 1), newdir); |
1214 | p = newdir + 2; | |
1215 | while (*p && !IS_DIRECTORY_SEP (*p)) p++; | |
1216 | p++; | |
1217 | while (*p && !IS_DIRECTORY_SEP (*p)) p++; | |
1218 | *p = 0; | |
1219 | } | |
1220 | else | |
1221 | #endif | |
1222 | newdir = ""; | |
1223 | } | |
1224 | } | |
5e570b75 | 1225 | #endif /* DOS_NT */ |
199607e4 RS |
1226 | |
1227 | if (newdir) | |
bfb61299 | 1228 | { |
57676091 | 1229 | /* Get rid of any slash at the end of newdir, unless newdir is |
f0f95d31 | 1230 | just / or // (an incomplete UNC name). */ |
199607e4 | 1231 | length = strlen (newdir); |
f0f95d31 | 1232 | if (length > 1 && IS_DIRECTORY_SEP (newdir[length - 1]) |
57676091 RS |
1233 | #ifdef WINDOWSNT |
1234 | && !(length == 2 && IS_DIRECTORY_SEP (newdir[0])) | |
1235 | #endif | |
1236 | ) | |
bfb61299 JB |
1237 | { |
1238 | unsigned char *temp = (unsigned char *) alloca (length); | |
72af86bd | 1239 | memcpy (temp, newdir, length - 1); |
bfb61299 JB |
1240 | temp[length - 1] = 0; |
1241 | newdir = temp; | |
1242 | } | |
1243 | tlen = length + 1; | |
1244 | } | |
1245 | else | |
1246 | tlen = 0; | |
570d7624 | 1247 | |
bfb61299 JB |
1248 | /* Now concatenate the directory and name to new space in the stack frame */ |
1249 | tlen += strlen (nm) + 1; | |
5e570b75 | 1250 | #ifdef DOS_NT |
f0f95d31 RS |
1251 | /* Reserve space for drive specifier and escape prefix, since either |
1252 | or both may need to be inserted. (The Microsoft x86 compiler | |
5e570b75 | 1253 | produces incorrect code if the following two lines are combined.) */ |
f0f95d31 RS |
1254 | target = (unsigned char *) alloca (tlen + 4); |
1255 | target += 4; | |
5e570b75 | 1256 | #else /* not DOS_NT */ |
570d7624 | 1257 | target = (unsigned char *) alloca (tlen); |
5e570b75 | 1258 | #endif /* not DOS_NT */ |
570d7624 JB |
1259 | *target = 0; |
1260 | ||
1261 | if (newdir) | |
1262 | { | |
5e570b75 | 1263 | if (nm[0] == 0 || IS_DIRECTORY_SEP (nm[0])) |
f5321b5c | 1264 | { |
3ea2d8b2 | 1265 | #ifdef DOS_NT |
f5321b5c RS |
1266 | /* If newdir is effectively "C:/", then the drive letter will have |
1267 | been stripped and newdir will be "/". Concatenating with an | |
1268 | absolute directory in nm produces "//", which will then be | |
1269 | incorrectly treated as a network share. Ignore newdir in | |
1270 | this case (keeping the drive letter). */ | |
efdc16c9 | 1271 | if (!(drive && nm[0] && IS_DIRECTORY_SEP (newdir[0]) |
f5321b5c RS |
1272 | && newdir[1] == '\0')) |
1273 | #endif | |
1274 | strcpy (target, newdir); | |
1275 | } | |
570d7624 | 1276 | else |
c77d647e | 1277 | file_name_as_directory (target, newdir); |
570d7624 JB |
1278 | } |
1279 | ||
1280 | strcat (target, nm); | |
199607e4 | 1281 | |
214378ec GM |
1282 | /* Now canonicalize by removing `//', `/.' and `/foo/..' if they |
1283 | appear. */ | |
5b5a2ea1 SM |
1284 | { |
1285 | unsigned char *p = target; | |
1286 | unsigned char *o = target; | |
570d7624 | 1287 | |
5b5a2ea1 SM |
1288 | while (*p) |
1289 | { | |
5b5a2ea1 SM |
1290 | if (!IS_DIRECTORY_SEP (*p)) |
1291 | { | |
1292 | *o++ = *p++; | |
1293 | } | |
1294 | else if (p[1] == '.' | |
1295 | && (IS_DIRECTORY_SEP (p[2]) | |
1296 | || p[2] == 0)) | |
1297 | { | |
1298 | /* If "/." is the entire filename, keep the "/". Otherwise, | |
1299 | just delete the whole "/.". */ | |
1300 | if (o == target && p[2] == '\0') | |
1301 | *o++ = *p; | |
1302 | p += 2; | |
1303 | } | |
1304 | else if (p[1] == '.' && p[2] == '.' | |
1305 | /* `/../' is the "superroot" on certain file systems. | |
1306 | Turned off on DOS_NT systems because they have no | |
1307 | "superroot" and because this causes us to produce | |
1308 | file names like "d:/../foo" which fail file-related | |
1309 | functions of the underlying OS. (To reproduce, try a | |
1310 | long series of "../../" in default_directory, longer | |
1311 | than the number of levels from the root.) */ | |
aa4060b9 | 1312 | #ifndef DOS_NT |
5b5a2ea1 | 1313 | && o != target |
aa4060b9 | 1314 | #endif |
5b5a2ea1 SM |
1315 | && (IS_DIRECTORY_SEP (p[3]) || p[3] == 0)) |
1316 | { | |
972ed246 JR |
1317 | #ifdef WINDOWSNT |
1318 | unsigned char *prev_o = o; | |
1319 | #endif | |
5b5a2ea1 SM |
1320 | while (o != target && (--o) && !IS_DIRECTORY_SEP (*o)) |
1321 | ; | |
972ed246 JR |
1322 | #ifdef WINDOWSNT |
1323 | /* Don't go below server level in UNC filenames. */ | |
1324 | if (o == target + 1 && IS_DIRECTORY_SEP (*o) | |
1325 | && IS_DIRECTORY_SEP (*target)) | |
1326 | o = prev_o; | |
1327 | else | |
1328 | #endif | |
5b5a2ea1 SM |
1329 | /* Keep initial / only if this is the whole name. */ |
1330 | if (o == target && IS_ANY_SEP (*o) && p[3] == 0) | |
1331 | ++o; | |
1332 | p += 3; | |
1333 | } | |
1334 | else if (p > target && IS_DIRECTORY_SEP (p[1])) | |
1335 | /* Collapse multiple `/' in a row. */ | |
1336 | p++; | |
1337 | else | |
1338 | { | |
1339 | *o++ = *p++; | |
1340 | } | |
5b5a2ea1 | 1341 | } |
570d7624 | 1342 | |
5e570b75 | 1343 | #ifdef DOS_NT |
5b5a2ea1 | 1344 | /* At last, set drive name. */ |
5e570b75 | 1345 | #ifdef WINDOWSNT |
5b5a2ea1 SM |
1346 | /* Except for network file name. */ |
1347 | if (!(IS_DIRECTORY_SEP (target[0]) && IS_DIRECTORY_SEP (target[1]))) | |
5e570b75 | 1348 | #endif /* WINDOWSNT */ |
5b5a2ea1 SM |
1349 | { |
1350 | if (!drive) abort (); | |
1351 | target -= 2; | |
1352 | target[0] = DRIVE_LETTER (drive); | |
1353 | target[1] = ':'; | |
1354 | } | |
1355 | /* Reinsert the escape prefix if required. */ | |
1356 | if (is_escaped) | |
1357 | { | |
1358 | target -= 2; | |
1359 | target[0] = '/'; | |
1360 | target[1] = ':'; | |
1361 | } | |
087fc47a | 1362 | dostounix_filename (target); |
5e570b75 | 1363 | #endif /* DOS_NT */ |
4c3c22f3 | 1364 | |
5b5a2ea1 SM |
1365 | result = make_specified_string (target, -1, o - target, multibyte); |
1366 | } | |
beb402de KG |
1367 | |
1368 | /* Again look to see if the file name has special constructs in it | |
1369 | and perhaps call the corresponding file handler. This is needed | |
1370 | for filenames such as "/foo/../user@host:/bar/../baz". Expanding | |
1371 | the ".." component gives us "/user@host:/bar/../baz" which needs | |
1372 | to be expanded again. */ | |
1373 | handler = Ffind_file_name_handler (result, Qexpand_file_name); | |
1374 | if (!NILP (handler)) | |
1375 | return call3 (handler, Qexpand_file_name, result, default_directory); | |
1376 | ||
1377 | return result; | |
570d7624 | 1378 | } |
5e570b75 | 1379 | |
4887597a EZ |
1380 | #if 0 |
1381 | /* PLEASE DO NOT DELETE THIS COMMENTED-OUT VERSION! | |
1382 | This is the old version of expand-file-name, before it was thoroughly | |
1383 | rewritten for Emacs 10.31. We leave this version here commented-out, | |
1384 | because the code is very complex and likely to have subtle bugs. If | |
1385 | bugs _are_ found, it might be of interest to look at the old code and | |
1386 | see what did it do in the relevant situation. | |
1387 | ||
30f50381 GM |
1388 | Don't remove this code: it's true that it will be accessible |
1389 | from the repository, but a few years from deletion, people will | |
1390 | forget it is there. */ | |
4887597a EZ |
1391 | |
1392 | /* Changed this DEFUN to a DEAFUN, so as not to confuse `make-docfile'. */ | |
1393 | DEAFUN ("expand-file-name", Fexpand_file_name, Sexpand_file_name, 1, 2, 0, | |
1394 | "Convert FILENAME to absolute, and canonicalize it.\n\ | |
1395 | Second arg DEFAULT is directory to start with if FILENAME is relative\n\ | |
c70a4df6 | 1396 | \(does not start with slash); if DEFAULT is nil or missing,\n\ |
4887597a EZ |
1397 | the current buffer's value of default-directory is used.\n\ |
1398 | Filenames containing `.' or `..' as components are simplified;\n\ | |
1399 | initial `~/' expands to your home directory.\n\ | |
1400 | See also the function `substitute-in-file-name'.") | |
1401 | (name, defalt) | |
1402 | Lisp_Object name, defalt; | |
1403 | { | |
1404 | unsigned char *nm; | |
1405 | ||
1406 | register unsigned char *newdir, *p, *o; | |
1407 | int tlen; | |
1408 | unsigned char *target; | |
1409 | struct passwd *pw; | |
1410 | int lose; | |
4887597a | 1411 | |
b7826503 | 1412 | CHECK_STRING (name); |
d5db4077 | 1413 | nm = SDATA (name); |
4887597a EZ |
1414 | |
1415 | /* If nm is absolute, flush ...// and detect /./ and /../. | |
1416 | If no /./ or /../ we can return right away. */ | |
7c2fb837 | 1417 | if (nm[0] == '/') |
4887597a EZ |
1418 | { |
1419 | p = nm; | |
1420 | lose = 0; | |
1421 | while (*p) | |
1422 | { | |
1423 | if (p[0] == '/' && p[1] == '/' | |
4887597a EZ |
1424 | ) |
1425 | nm = p + 1; | |
1426 | if (p[0] == '/' && p[1] == '~') | |
1427 | nm = p + 1, lose = 1; | |
1428 | if (p[0] == '/' && p[1] == '.' | |
1429 | && (p[2] == '/' || p[2] == 0 | |
1430 | || (p[2] == '.' && (p[3] == '/' || p[3] == 0)))) | |
1431 | lose = 1; | |
4887597a EZ |
1432 | p++; |
1433 | } | |
1434 | if (!lose) | |
1435 | { | |
d5db4077 | 1436 | if (nm == SDATA (name)) |
4887597a EZ |
1437 | return name; |
1438 | return build_string (nm); | |
1439 | } | |
1440 | } | |
1441 | ||
1442 | /* Now determine directory to start with and put it in NEWDIR */ | |
1443 | ||
1444 | newdir = 0; | |
1445 | ||
1446 | if (nm[0] == '~') /* prefix ~ */ | |
7c2fb837 | 1447 | if (nm[1] == '/' || nm[1] == 0)/* ~/filename */ |
4887597a EZ |
1448 | { |
1449 | if (!(newdir = (unsigned char *) egetenv ("HOME"))) | |
1450 | newdir = (unsigned char *) ""; | |
1451 | nm++; | |
4887597a EZ |
1452 | } |
1453 | else /* ~user/filename */ | |
1454 | { | |
1455 | /* Get past ~ to user */ | |
1456 | unsigned char *user = nm + 1; | |
1457 | /* Find end of name. */ | |
8966b757 | 1458 | unsigned char *ptr = (unsigned char *) strchr (user, '/'); |
4887597a | 1459 | int len = ptr ? ptr - user : strlen (user); |
4887597a EZ |
1460 | /* Copy the user name into temp storage. */ |
1461 | o = (unsigned char *) alloca (len + 1); | |
72af86bd | 1462 | memcpy (o, user, len); |
4887597a EZ |
1463 | o[len] = 0; |
1464 | ||
1465 | /* Look up the user name. */ | |
67c08d6c | 1466 | BLOCK_INPUT; |
4887597a | 1467 | pw = (struct passwd *) getpwnam (o + 1); |
67c08d6c | 1468 | UNBLOCK_INPUT; |
4887597a EZ |
1469 | if (!pw) |
1470 | error ("\"%s\" isn't a registered user", o + 1); | |
1471 | ||
1472 | newdir = (unsigned char *) pw->pw_dir; | |
1473 | ||
1474 | /* Discard the user name from NM. */ | |
1475 | nm += len; | |
1476 | } | |
1477 | ||
7c2fb837 | 1478 | if (nm[0] != '/' && !newdir) |
4887597a EZ |
1479 | { |
1480 | if (NILP (defalt)) | |
1481 | defalt = current_buffer->directory; | |
b7826503 | 1482 | CHECK_STRING (defalt); |
d5db4077 | 1483 | newdir = SDATA (defalt); |
4887597a EZ |
1484 | } |
1485 | ||
1486 | /* Now concatenate the directory and name to new space in the stack frame */ | |
1487 | ||
1488 | tlen = (newdir ? strlen (newdir) + 1 : 0) + strlen (nm) + 1; | |
1489 | target = (unsigned char *) alloca (tlen); | |
1490 | *target = 0; | |
1491 | ||
1492 | if (newdir) | |
1493 | { | |
4887597a EZ |
1494 | if (nm[0] == 0 || nm[0] == '/') |
1495 | strcpy (target, newdir); | |
1496 | else | |
4887597a EZ |
1497 | file_name_as_directory (target, newdir); |
1498 | } | |
1499 | ||
1500 | strcat (target, nm); | |
4887597a EZ |
1501 | |
1502 | /* Now canonicalize by removing /. and /foo/.. if they appear */ | |
1503 | ||
1504 | p = target; | |
1505 | o = target; | |
1506 | ||
1507 | while (*p) | |
1508 | { | |
4887597a EZ |
1509 | if (*p != '/') |
1510 | { | |
1511 | *o++ = *p++; | |
1512 | } | |
1513 | else if (!strncmp (p, "//", 2) | |
4887597a EZ |
1514 | ) |
1515 | { | |
1516 | o = target; | |
1517 | p++; | |
1518 | } | |
994a7262 RS |
1519 | else if (p[0] == '/' && p[1] == '.' |
1520 | && (p[2] == '/' || p[2] == 0)) | |
4887597a EZ |
1521 | p += 2; |
1522 | else if (!strncmp (p, "/..", 3) | |
1523 | /* `/../' is the "superroot" on certain file systems. */ | |
1524 | && o != target | |
1525 | && (p[3] == '/' || p[3] == 0)) | |
1526 | { | |
1527 | while (o != target && *--o != '/') | |
1528 | ; | |
4887597a EZ |
1529 | if (o == target && *o == '/') |
1530 | ++o; | |
1531 | p += 3; | |
1532 | } | |
1533 | else | |
1534 | { | |
1535 | *o++ = *p++; | |
1536 | } | |
4887597a EZ |
1537 | } |
1538 | ||
1539 | return make_string (target, o - target); | |
1540 | } | |
1541 | #endif | |
570d7624 | 1542 | \f |
c70a4df6 SM |
1543 | /* If /~ or // appears, discard everything through first slash. */ |
1544 | static int | |
971de7fb | 1545 | file_name_absolute_p (const unsigned char *filename) |
c70a4df6 SM |
1546 | { |
1547 | return | |
1548 | (IS_DIRECTORY_SEP (*filename) || *filename == '~' | |
c70a4df6 SM |
1549 | #ifdef DOS_NT |
1550 | || (IS_DRIVE (*filename) && IS_DEVICE_SEP (filename[1]) | |
1551 | && IS_DIRECTORY_SEP (filename[2])) | |
1552 | #endif | |
1553 | ); | |
1554 | } | |
1555 | ||
1556 | static unsigned char * | |
971de7fb | 1557 | search_embedded_absfilename (unsigned char *nm, unsigned char *endp) |
c70a4df6 SM |
1558 | { |
1559 | unsigned char *p, *s; | |
1560 | ||
1561 | for (p = nm + 1; p < endp; p++) | |
1562 | { | |
1563 | if ((0 | |
c70a4df6 SM |
1564 | || IS_DIRECTORY_SEP (p[-1])) |
1565 | && file_name_absolute_p (p) | |
e39a993c | 1566 | #if defined (WINDOWSNT) || defined(CYGWIN) |
c70a4df6 SM |
1567 | /* // at start of file name is meaningful in Apollo, |
1568 | WindowsNT and Cygwin systems. */ | |
f34574c6 | 1569 | && !(IS_DIRECTORY_SEP (p[0]) && p - 1 == nm) |
e39a993c | 1570 | #endif /* not (WINDOWSNT || CYGWIN) */ |
c70a4df6 SM |
1571 | ) |
1572 | { | |
7c2fb837 | 1573 | for (s = p; *s && (!IS_DIRECTORY_SEP (*s)); s++); |
c70a4df6 SM |
1574 | if (p[0] == '~' && s > p + 1) /* we've got "/~something/" */ |
1575 | { | |
1576 | unsigned char *o = alloca (s - p + 1); | |
1577 | struct passwd *pw; | |
72af86bd | 1578 | memcpy (o, p, s - p); |
c70a4df6 SM |
1579 | o [s - p] = 0; |
1580 | ||
1581 | /* If we have ~user and `user' exists, discard | |
1582 | everything up to ~. But if `user' does not exist, leave | |
1583 | ~user alone, it might be a literal file name. */ | |
67c08d6c YM |
1584 | BLOCK_INPUT; |
1585 | pw = getpwnam (o + 1); | |
1586 | UNBLOCK_INPUT; | |
1587 | if (pw) | |
c70a4df6 | 1588 | return p; |
c70a4df6 SM |
1589 | } |
1590 | else | |
1591 | return p; | |
1592 | } | |
1593 | } | |
1594 | return NULL; | |
1595 | } | |
1596 | ||
570d7624 | 1597 | DEFUN ("substitute-in-file-name", Fsubstitute_in_file_name, |
8c1a1077 PJ |
1598 | Ssubstitute_in_file_name, 1, 1, 0, |
1599 | doc: /* Substitute environment variables referred to in FILENAME. | |
1600 | `$FOO' where FOO is an environment variable name means to substitute | |
1601 | the value of that variable. The variable name should be terminated | |
1602 | with a character not a letter, digit or underscore; otherwise, enclose | |
1603 | the entire variable name in braces. | |
c68845e0 GM |
1604 | |
1605 | If `/~' appears, all of FILENAME through that `/' is discarded. | |
1606 | If `//' appears, everything up to and including the first of | |
1607 | those `/' is discarded. */) | |
5842a27b | 1608 | (Lisp_Object filename) |
570d7624 JB |
1609 | { |
1610 | unsigned char *nm; | |
1611 | ||
1612 | register unsigned char *s, *p, *o, *x, *endp; | |
6bbd7a29 | 1613 | unsigned char *target = NULL; |
570d7624 JB |
1614 | int total = 0; |
1615 | int substituted = 0; | |
58aec0d6 | 1616 | int multibyte; |
570d7624 | 1617 | unsigned char *xnm; |
8ce069f5 | 1618 | Lisp_Object handler; |
570d7624 | 1619 | |
b7826503 | 1620 | CHECK_STRING (filename); |
570d7624 | 1621 | |
58aec0d6 JR |
1622 | multibyte = STRING_MULTIBYTE (filename); |
1623 | ||
8ce069f5 RS |
1624 | /* If the file name has special constructs in it, |
1625 | call the corresponding file handler. */ | |
3b7f6e60 | 1626 | handler = Ffind_file_name_handler (filename, Qsubstitute_in_file_name); |
8ce069f5 | 1627 | if (!NILP (handler)) |
3b7f6e60 | 1628 | return call2 (handler, Qsubstitute_in_file_name, filename); |
8ce069f5 | 1629 | |
58aec0d6 JR |
1630 | /* Always work on a copy of the string, in case GC happens during |
1631 | decode of environment variables, causing the original Lisp_String | |
1632 | data to be relocated. */ | |
0f3f018c | 1633 | nm = (unsigned char *) alloca (SBYTES (filename) + 1); |
72af86bd | 1634 | memcpy (nm, SDATA (filename), SBYTES (filename) + 1); |
0f3f018c | 1635 | |
58aec0d6 | 1636 | #ifdef DOS_NT |
087fc47a | 1637 | dostounix_filename (nm); |
d5db4077 | 1638 | substituted = (strcmp (nm, SDATA (filename)) != 0); |
a5a1cc06 | 1639 | #endif |
d5db4077 | 1640 | endp = nm + SBYTES (filename); |
570d7624 | 1641 | |
82330e7f | 1642 | /* If /~ or // appears, discard everything through first slash. */ |
c70a4df6 SM |
1643 | p = search_embedded_absfilename (nm, endp); |
1644 | if (p) | |
1645 | /* Start over with the new string, so we check the file-name-handler | |
1646 | again. Important with filenames like "/home/foo//:/hello///there" | |
1647 | which whould substitute to "/:/hello///there" rather than "/there". */ | |
1648 | return Fsubstitute_in_file_name | |
58aec0d6 | 1649 | (make_specified_string (p, -1, endp - p, multibyte)); |
570d7624 JB |
1650 | |
1651 | /* See if any variables are substituted into the string | |
1652 | and find the total length of their values in `total' */ | |
1653 | ||
1654 | for (p = nm; p != endp;) | |
1655 | if (*p != '$') | |
1656 | p++; | |
1657 | else | |
1658 | { | |
1659 | p++; | |
1660 | if (p == endp) | |
1661 | goto badsubst; | |
1662 | else if (*p == '$') | |
1663 | { | |
1664 | /* "$$" means a single "$" */ | |
1665 | p++; | |
1666 | total -= 1; | |
1667 | substituted = 1; | |
1668 | continue; | |
1669 | } | |
1670 | else if (*p == '{') | |
1671 | { | |
1672 | o = ++p; | |
1673 | while (p != endp && *p != '}') p++; | |
1674 | if (*p != '}') goto missingclose; | |
1675 | s = p; | |
1676 | } | |
1677 | else | |
1678 | { | |
1679 | o = p; | |
1680 | while (p != endp && (isalnum (*p) || *p == '_')) p++; | |
1681 | s = p; | |
1682 | } | |
1683 | ||
1684 | /* Copy out the variable name */ | |
1685 | target = (unsigned char *) alloca (s - o + 1); | |
1686 | strncpy (target, o, s - o); | |
1687 | target[s - o] = 0; | |
5e570b75 | 1688 | #ifdef DOS_NT |
4c3c22f3 | 1689 | strupr (target); /* $home == $HOME etc. */ |
5e570b75 | 1690 | #endif /* DOS_NT */ |
570d7624 JB |
1691 | |
1692 | /* Get variable value */ | |
1693 | o = (unsigned char *) egetenv (target); | |
8d2ced53 | 1694 | if (o) |
58aec0d6 JR |
1695 | { |
1696 | /* Don't try to guess a maximum length - UTF8 can use up to | |
1697 | four bytes per character. This code is unlikely to run | |
1698 | in a situation that requires performance, so decoding the | |
1699 | env variables twice should be acceptable. Note that | |
1700 | decoding may cause a garbage collect. */ | |
1701 | Lisp_Object orig, decoded; | |
1702 | orig = make_unibyte_string (o, strlen (o)); | |
1703 | decoded = DECODE_FILE (orig); | |
1704 | total += SBYTES (decoded); | |
8d2ced53 SM |
1705 | substituted = 1; |
1706 | } | |
1707 | else if (*p == '}') | |
1708 | goto badvar; | |
570d7624 JB |
1709 | } |
1710 | ||
1711 | if (!substituted) | |
3b7f6e60 | 1712 | return filename; |
570d7624 JB |
1713 | |
1714 | /* If substitution required, recopy the string and do it */ | |
1715 | /* Make space in stack frame for the new copy */ | |
d5db4077 | 1716 | xnm = (unsigned char *) alloca (SBYTES (filename) + total + 1); |
570d7624 JB |
1717 | x = xnm; |
1718 | ||
1719 | /* Copy the rest of the name through, replacing $ constructs with values */ | |
1720 | for (p = nm; *p;) | |
1721 | if (*p != '$') | |
1722 | *x++ = *p++; | |
1723 | else | |
1724 | { | |
1725 | p++; | |
1726 | if (p == endp) | |
1727 | goto badsubst; | |
1728 | else if (*p == '$') | |
1729 | { | |
1730 | *x++ = *p++; | |
1731 | continue; | |
1732 | } | |
1733 | else if (*p == '{') | |
1734 | { | |
1735 | o = ++p; | |
1736 | while (p != endp && *p != '}') p++; | |
1737 | if (*p != '}') goto missingclose; | |
1738 | s = p++; | |
1739 | } | |
1740 | else | |
1741 | { | |
1742 | o = p; | |
1743 | while (p != endp && (isalnum (*p) || *p == '_')) p++; | |
1744 | s = p; | |
1745 | } | |
1746 | ||
1747 | /* Copy out the variable name */ | |
1748 | target = (unsigned char *) alloca (s - o + 1); | |
1749 | strncpy (target, o, s - o); | |
1750 | target[s - o] = 0; | |
5e570b75 | 1751 | #ifdef DOS_NT |
4c3c22f3 | 1752 | strupr (target); /* $home == $HOME etc. */ |
5e570b75 | 1753 | #endif /* DOS_NT */ |
570d7624 JB |
1754 | |
1755 | /* Get variable value */ | |
1756 | o = (unsigned char *) egetenv (target); | |
570d7624 | 1757 | if (!o) |
8d2ced53 SM |
1758 | { |
1759 | *x++ = '$'; | |
1760 | strcpy (x, target); x+= strlen (target); | |
1761 | } | |
60d67b83 RS |
1762 | else |
1763 | { | |
58aec0d6 JR |
1764 | Lisp_Object orig, decoded; |
1765 | int orig_length, decoded_length; | |
1766 | orig_length = strlen (o); | |
1767 | orig = make_unibyte_string (o, orig_length); | |
1768 | decoded = DECODE_FILE (orig); | |
1769 | decoded_length = SBYTES (decoded); | |
1770 | strncpy (x, SDATA (decoded), decoded_length); | |
1771 | x += decoded_length; | |
1772 | ||
1773 | /* If environment variable needed decoding, return value | |
1774 | needs to be multibyte. */ | |
1775 | if (decoded_length != orig_length | |
1776 | || strncmp (SDATA (decoded), o, orig_length)) | |
1777 | multibyte = 1; | |
60d67b83 | 1778 | } |
570d7624 JB |
1779 | } |
1780 | ||
1781 | *x = 0; | |
1782 | ||
82330e7f | 1783 | /* If /~ or // appears, discard everything through first slash. */ |
c70a4df6 SM |
1784 | while ((p = search_embedded_absfilename (xnm, x))) |
1785 | /* This time we do not start over because we've already expanded envvars | |
1786 | and replaced $$ with $. Maybe we should start over as well, but we'd | |
1787 | need to quote some $ to $$ first. */ | |
1788 | xnm = p; | |
570d7624 | 1789 | |
58aec0d6 | 1790 | return make_specified_string (xnm, -1, x - xnm, multibyte); |
570d7624 JB |
1791 | |
1792 | badsubst: | |
1793 | error ("Bad format environment-variable substitution"); | |
1794 | missingclose: | |
1795 | error ("Missing \"}\" in environment-variable substitution"); | |
1796 | badvar: | |
1797 | error ("Substituting nonexistent environment variable \"%s\"", target); | |
1798 | ||
1799 | /* NOTREACHED */ | |
6bbd7a29 | 1800 | return Qnil; |
570d7624 JB |
1801 | } |
1802 | \f | |
067ffa38 | 1803 | /* A slightly faster and more convenient way to get |
298b760e | 1804 | (directory-file-name (expand-file-name FOO)). */ |
067ffa38 | 1805 | |
570d7624 | 1806 | Lisp_Object |
971de7fb | 1807 | expand_and_dir_to_file (Lisp_Object filename, Lisp_Object defdir) |
570d7624 | 1808 | { |
199607e4 | 1809 | register Lisp_Object absname; |
570d7624 | 1810 | |
199607e4 | 1811 | absname = Fexpand_file_name (filename, defdir); |
7c2fb837 | 1812 | |
199607e4 | 1813 | /* Remove final slash, if any (unless this is the root dir). |
570d7624 | 1814 | stat behaves differently depending! */ |
d5db4077 KR |
1815 | if (SCHARS (absname) > 1 |
1816 | && IS_DIRECTORY_SEP (SREF (absname, SBYTES (absname) - 1)) | |
1817 | && !IS_DEVICE_SEP (SREF (absname, SBYTES (absname)-2))) | |
ddc61f46 | 1818 | /* We cannot take shortcuts; they might be wrong for magic file names. */ |
199607e4 | 1819 | absname = Fdirectory_file_name (absname); |
199607e4 | 1820 | return absname; |
570d7624 JB |
1821 | } |
1822 | \f | |
3ed15d97 RS |
1823 | /* Signal an error if the file ABSNAME already exists. |
1824 | If INTERACTIVE is nonzero, ask the user whether to proceed, | |
1825 | and bypass the error if the user says to go ahead. | |
1826 | QUERYSTRING is a name for the action that is being considered | |
1827 | to alter the file. | |
de1d0127 | 1828 | |
3ed15d97 | 1829 | *STATPTR is used to store the stat information if the file exists. |
de1d0127 | 1830 | If the file does not exist, STATPTR->st_mode is set to 0. |
b8b29dc9 RS |
1831 | If STATPTR is null, we don't store into it. |
1832 | ||
1833 | If QUICK is nonzero, we ask for y or n, not yes or no. */ | |
3ed15d97 | 1834 | |
c4df73f9 | 1835 | void |
971de7fb | 1836 | barf_or_query_if_file_exists (Lisp_Object absname, unsigned char *querystring, int interactive, struct stat *statptr, int quick) |
570d7624 | 1837 | { |
643c73b9 | 1838 | register Lisp_Object tem, encoded_filename; |
4018b5ef | 1839 | struct stat statbuf; |
570d7624 JB |
1840 | struct gcpro gcpro1; |
1841 | ||
643c73b9 RS |
1842 | encoded_filename = ENCODE_FILE (absname); |
1843 | ||
4018b5ef RS |
1844 | /* stat is a good way to tell whether the file exists, |
1845 | regardless of what access permissions it has. */ | |
f72b5416 | 1846 | if (lstat (SDATA (encoded_filename), &statbuf) >= 0) |
570d7624 JB |
1847 | { |
1848 | if (! interactive) | |
24b1ddad KS |
1849 | xsignal2 (Qfile_already_exists, |
1850 | build_string ("File already exists"), absname); | |
570d7624 | 1851 | GCPRO1 (absname); |
67e8e2b8 RS |
1852 | tem = format2 ("File %s already exists; %s anyway? ", |
1853 | absname, build_string (querystring)); | |
b8b29dc9 RS |
1854 | if (quick) |
1855 | tem = Fy_or_n_p (tem); | |
1856 | else | |
1857 | tem = do_yes_or_no_p (tem); | |
570d7624 | 1858 | UNGCPRO; |
265a9e55 | 1859 | if (NILP (tem)) |
24b1ddad KS |
1860 | xsignal2 (Qfile_already_exists, |
1861 | build_string ("File already exists"), absname); | |
3ed15d97 RS |
1862 | if (statptr) |
1863 | *statptr = statbuf; | |
1864 | } | |
1865 | else | |
1866 | { | |
1867 | if (statptr) | |
1868 | statptr->st_mode = 0; | |
570d7624 JB |
1869 | } |
1870 | return; | |
1871 | } | |
1872 | ||
574c05e2 | 1873 | DEFUN ("copy-file", Fcopy_file, Scopy_file, 2, 6, |
7c0f6118 | 1874 | "fCopy file: \nGCopy %s to file: \np\nP", |
8c1a1077 PJ |
1875 | doc: /* Copy FILE to NEWNAME. Both args must be strings. |
1876 | If NEWNAME names a directory, copy FILE there. | |
795c20df CY |
1877 | |
1878 | This function always sets the file modes of the output file to match | |
1879 | the input file. | |
1880 | ||
1881 | The optional third argument OK-IF-ALREADY-EXISTS specifies what to do | |
1882 | if file NEWNAME already exists. If OK-IF-ALREADY-EXISTS is nil, we | |
1883 | signal a `file-already-exists' error without overwriting. If | |
1884 | OK-IF-ALREADY-EXISTS is a number, we request confirmation from the user | |
1885 | about overwriting; this is what happens in interactive use with M-x. | |
1886 | Any other value for OK-IF-ALREADY-EXISTS means to overwrite the | |
1887 | existing file. | |
c50f15d0 | 1888 | |
7f08b80e | 1889 | Fourth arg KEEP-TIME non-nil means give the output file the same |
8c1a1077 | 1890 | last-modified time as the old one. (This works on only some systems.) |
c50f15d0 | 1891 | |
7fce7dfe EZ |
1892 | A prefix arg makes KEEP-TIME non-nil. |
1893 | ||
586702ce | 1894 | If PRESERVE-UID-GID is non-nil, we try to transfer the |
574c05e2 KK |
1895 | uid and gid of FILE to NEWNAME. |
1896 | ||
f5783df3 | 1897 | If PRESERVE-SELINUX-CONTEXT is non-nil and SELinux is enabled |
574c05e2 | 1898 | on the system, we copy the SELinux context of FILE to NEWNAME. */) |
5842a27b | 1899 | (Lisp_Object file, Lisp_Object newname, Lisp_Object ok_if_already_exists, Lisp_Object keep_time, Lisp_Object preserve_uid_gid, Lisp_Object preserve_selinux_context) |
570d7624 JB |
1900 | { |
1901 | int ifd, ofd, n; | |
1902 | char buf[16 * 1024]; | |
3ed15d97 | 1903 | struct stat st, out_st; |
32f4334d | 1904 | Lisp_Object handler; |
b1d1b865 | 1905 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; |
aed13378 | 1906 | int count = SPECPDL_INDEX (); |
f73b0ada | 1907 | int input_file_statable_p; |
b1d1b865 | 1908 | Lisp_Object encoded_file, encoded_newname; |
574c05e2 KK |
1909 | #if HAVE_LIBSELINUX |
1910 | security_context_t con; | |
1911 | int fail, conlength = 0; | |
1912 | #endif | |
570d7624 | 1913 | |
b1d1b865 RS |
1914 | encoded_file = encoded_newname = Qnil; |
1915 | GCPRO4 (file, newname, encoded_file, encoded_newname); | |
b7826503 PJ |
1916 | CHECK_STRING (file); |
1917 | CHECK_STRING (newname); | |
b1d1b865 | 1918 | |
a9d14e54 | 1919 | if (!NILP (Ffile_directory_p (newname))) |
6b61353c | 1920 | newname = Fexpand_file_name (Ffile_name_nondirectory (file), newname); |
a9d14e54 GM |
1921 | else |
1922 | newname = Fexpand_file_name (newname, Qnil); | |
1923 | ||
3b7f6e60 | 1924 | file = Fexpand_file_name (file, Qnil); |
32f4334d | 1925 | |
0bf2eed2 | 1926 | /* If the input file name has special constructs in it, |
32f4334d | 1927 | call the corresponding file handler. */ |
3b7f6e60 | 1928 | handler = Ffind_file_name_handler (file, Qcopy_file); |
0bf2eed2 | 1929 | /* Likewise for output file name. */ |
51cf6d37 | 1930 | if (NILP (handler)) |
49307295 | 1931 | handler = Ffind_file_name_handler (newname, Qcopy_file); |
32f4334d | 1932 | if (!NILP (handler)) |
574c05e2 KK |
1933 | RETURN_UNGCPRO (call7 (handler, Qcopy_file, file, newname, |
1934 | ok_if_already_exists, keep_time, preserve_uid_gid, | |
1935 | preserve_selinux_context)); | |
32f4334d | 1936 | |
b1d1b865 RS |
1937 | encoded_file = ENCODE_FILE (file); |
1938 | encoded_newname = ENCODE_FILE (newname); | |
1939 | ||
265a9e55 | 1940 | if (NILP (ok_if_already_exists) |
93c30b5f | 1941 | || INTEGERP (ok_if_already_exists)) |
2f868094 | 1942 | barf_or_query_if_file_exists (newname, "copy to it", |
b8b29dc9 | 1943 | INTEGERP (ok_if_already_exists), &out_st, 0); |
d5db4077 | 1944 | else if (stat (SDATA (encoded_newname), &out_st) < 0) |
3ed15d97 | 1945 | out_st.st_mode = 0; |
570d7624 | 1946 | |
e8691c59 | 1947 | #ifdef WINDOWSNT |
d5db4077 | 1948 | if (!CopyFile (SDATA (encoded_file), |
efdc16c9 | 1949 | SDATA (encoded_newname), |
e8691c59 GM |
1950 | FALSE)) |
1951 | report_file_error ("Copying file", Fcons (file, Fcons (newname, Qnil))); | |
8b53dc06 JR |
1952 | /* CopyFile retains the timestamp by default. */ |
1953 | else if (NILP (keep_time)) | |
e8691c59 GM |
1954 | { |
1955 | EMACS_TIME now; | |
ad497129 JR |
1956 | DWORD attributes; |
1957 | char * filename; | |
1958 | ||
e8691c59 | 1959 | EMACS_GET_TIME (now); |
d5db4077 | 1960 | filename = SDATA (encoded_newname); |
ad497129 JR |
1961 | |
1962 | /* Ensure file is writable while its modified time is set. */ | |
1963 | attributes = GetFileAttributes (filename); | |
02cca86b | 1964 | SetFileAttributes (filename, attributes & ~FILE_ATTRIBUTE_READONLY); |
ad497129 JR |
1965 | if (set_file_times (filename, now, now)) |
1966 | { | |
1967 | /* Restore original attributes. */ | |
1968 | SetFileAttributes (filename, attributes); | |
24b1ddad KS |
1969 | xsignal2 (Qfile_date_error, |
1970 | build_string ("Cannot set file date"), newname); | |
ad497129 JR |
1971 | } |
1972 | /* Restore original attributes. */ | |
1973 | SetFileAttributes (filename, attributes); | |
e8691c59 GM |
1974 | } |
1975 | #else /* not WINDOWSNT */ | |
13336908 | 1976 | immediate_quit = 1; |
d5db4077 | 1977 | ifd = emacs_open (SDATA (encoded_file), O_RDONLY, 0); |
13336908 RS |
1978 | immediate_quit = 0; |
1979 | ||
570d7624 | 1980 | if (ifd < 0) |
3b7f6e60 | 1981 | report_file_error ("Opening input file", Fcons (file, Qnil)); |
570d7624 | 1982 | |
b5148e85 RS |
1983 | record_unwind_protect (close_file_unwind, make_number (ifd)); |
1984 | ||
f73b0ada BF |
1985 | /* We can only copy regular files and symbolic links. Other files are not |
1986 | copyable by us. */ | |
1987 | input_file_statable_p = (fstat (ifd, &st) >= 0); | |
1988 | ||
574c05e2 KK |
1989 | #if HAVE_LIBSELINUX |
1990 | if (!NILP (preserve_selinux_context) && is_selinux_enabled ()) | |
1991 | { | |
1992 | conlength = fgetfilecon (ifd, &con); | |
1993 | if (conlength == -1) | |
1994 | report_file_error ("Doing fgetfilecon", Fcons (file, Qnil)); | |
1995 | } | |
1996 | #endif | |
1997 | ||
3ed15d97 RS |
1998 | if (out_st.st_mode != 0 |
1999 | && st.st_dev == out_st.st_dev && st.st_ino == out_st.st_ino) | |
2000 | { | |
2001 | errno = 0; | |
2002 | report_file_error ("Input and output files are the same", | |
3b7f6e60 | 2003 | Fcons (file, Fcons (newname, Qnil))); |
3ed15d97 | 2004 | } |
3ed15d97 | 2005 | |
f73b0ada BF |
2006 | #if defined (S_ISREG) && defined (S_ISLNK) |
2007 | if (input_file_statable_p) | |
2008 | { | |
2009 | if (!(S_ISREG (st.st_mode)) && !(S_ISLNK (st.st_mode))) | |
2010 | { | |
2011 | #if defined (EISDIR) | |
2012 | /* Get a better looking error message. */ | |
2013 | errno = EISDIR; | |
2014 | #endif /* EISDIR */ | |
3b7f6e60 | 2015 | report_file_error ("Non-regular file", Fcons (file, Qnil)); |
f73b0ada BF |
2016 | } |
2017 | } | |
2018 | #endif /* S_ISREG && S_ISLNK */ | |
2019 | ||
4c3c22f3 RS |
2020 | #ifdef MSDOS |
2021 | /* System's default file type was set to binary by _fmode in emacs.c. */ | |
c50f15d0 | 2022 | ofd = emacs_open (SDATA (encoded_newname), |
7fce7dfe | 2023 | O_WRONLY | O_TRUNC | O_CREAT |
795c20df | 2024 | | (NILP (ok_if_already_exists) ? O_EXCL : 0), |
c50f15d0 RS |
2025 | S_IREAD | S_IWRITE); |
2026 | #else /* not MSDOS */ | |
2027 | ofd = emacs_open (SDATA (encoded_newname), | |
2028 | O_WRONLY | O_TRUNC | O_CREAT | |
795c20df | 2029 | | (NILP (ok_if_already_exists) ? O_EXCL : 0), |
c50f15d0 | 2030 | 0666); |
4c3c22f3 | 2031 | #endif /* not MSDOS */ |
570d7624 | 2032 | if (ofd < 0) |
3ed15d97 | 2033 | report_file_error ("Opening output file", Fcons (newname, Qnil)); |
b5148e85 RS |
2034 | |
2035 | record_unwind_protect (close_file_unwind, make_number (ofd)); | |
570d7624 | 2036 | |
b5148e85 RS |
2037 | immediate_quit = 1; |
2038 | QUIT; | |
68c45bf0 PE |
2039 | while ((n = emacs_read (ifd, buf, sizeof buf)) > 0) |
2040 | if (emacs_write (ofd, buf, n) != n) | |
3ed15d97 | 2041 | report_file_error ("I/O error", Fcons (newname, Qnil)); |
b5148e85 | 2042 | immediate_quit = 0; |
570d7624 | 2043 | |
b016179b EZ |
2044 | #ifndef MSDOS |
2045 | /* Preserve the original file modes, and if requested, also its | |
2046 | owner and group. */ | |
586702ce RS |
2047 | if (input_file_statable_p) |
2048 | { | |
b016179b EZ |
2049 | if (! NILP (preserve_uid_gid)) |
2050 | fchown (ofd, st.st_uid, st.st_gid); | |
586702ce | 2051 | fchmod (ofd, st.st_mode & 07777); |
586702ce | 2052 | } |
b016179b | 2053 | #endif /* not MSDOS */ |
586702ce | 2054 | |
574c05e2 KK |
2055 | #if HAVE_LIBSELINUX |
2056 | if (conlength > 0) | |
2057 | { | |
2058 | /* Set the modified context back to the file. */ | |
2059 | fail = fsetfilecon (ofd, con); | |
2060 | if (fail) | |
2061 | report_file_error ("Doing fsetfilecon", Fcons (newname, Qnil)); | |
2062 | ||
2063 | freecon (con); | |
2064 | } | |
2065 | #endif | |
2066 | ||
5acac34e | 2067 | /* Closing the output clobbers the file times on some systems. */ |
68c45bf0 | 2068 | if (emacs_close (ofd) < 0) |
5acac34e RS |
2069 | report_file_error ("I/O error", Fcons (newname, Qnil)); |
2070 | ||
f73b0ada | 2071 | if (input_file_statable_p) |
570d7624 | 2072 | { |
8ca6602c | 2073 | if (!NILP (keep_time)) |
570d7624 | 2074 | { |
de5bf5d3 JB |
2075 | EMACS_TIME atime, mtime; |
2076 | EMACS_SET_SECS_USECS (atime, st.st_atime, 0); | |
2077 | EMACS_SET_SECS_USECS (mtime, st.st_mtime, 0); | |
d5db4077 | 2078 | if (set_file_times (SDATA (encoded_newname), |
b1d1b865 | 2079 | atime, mtime)) |
24b1ddad KS |
2080 | xsignal2 (Qfile_date_error, |
2081 | build_string ("Cannot set file date"), newname); | |
570d7624 | 2082 | } |
570d7624 JB |
2083 | } |
2084 | ||
68c45bf0 | 2085 | emacs_close (ifd); |
b016179b | 2086 | |
ed68db4d | 2087 | #ifdef MSDOS |
b016179b EZ |
2088 | if (input_file_statable_p) |
2089 | { | |
2090 | /* In DJGPP v2.0 and later, fstat usually returns true file mode bits, | |
2091 | and if it can't, it tells so. Otherwise, under MSDOS we usually | |
2092 | get only the READ bit, which will make the copied file read-only, | |
2093 | so it's better not to chmod at all. */ | |
2094 | if ((_djstat_flags & _STFAIL_WRITEBIT) == 0) | |
2095 | chmod (SDATA (encoded_newname), st.st_mode & 07777); | |
2096 | } | |
ed68db4d | 2097 | #endif /* MSDOS */ |
b016179b | 2098 | #endif /* not WINDOWSNT */ |
5acac34e | 2099 | |
b5148e85 RS |
2100 | /* Discard the unwind protects. */ |
2101 | specpdl_ptr = specpdl + count; | |
2102 | ||
570d7624 JB |
2103 | UNGCPRO; |
2104 | return Qnil; | |
2105 | } | |
385b6cc7 | 2106 | \f |
9bbe01fb | 2107 | DEFUN ("make-directory-internal", Fmake_directory_internal, |
353cfc19 | 2108 | Smake_directory_internal, 1, 1, 0, |
8c1a1077 | 2109 | doc: /* Create a new directory named DIRECTORY. */) |
5842a27b | 2110 | (Lisp_Object directory) |
570d7624 | 2111 | { |
19290c65 | 2112 | const unsigned char *dir; |
32f4334d | 2113 | Lisp_Object handler; |
b1d1b865 | 2114 | Lisp_Object encoded_dir; |
570d7624 | 2115 | |
b7826503 | 2116 | CHECK_STRING (directory); |
3b7f6e60 | 2117 | directory = Fexpand_file_name (directory, Qnil); |
32f4334d | 2118 | |
3b7f6e60 | 2119 | handler = Ffind_file_name_handler (directory, Qmake_directory_internal); |
32f4334d | 2120 | if (!NILP (handler)) |
3b7f6e60 | 2121 | return call2 (handler, Qmake_directory_internal, directory); |
9bbe01fb | 2122 | |
b1d1b865 RS |
2123 | encoded_dir = ENCODE_FILE (directory); |
2124 | ||
d5db4077 | 2125 | dir = SDATA (encoded_dir); |
570d7624 | 2126 | |
5e570b75 RS |
2127 | #ifdef WINDOWSNT |
2128 | if (mkdir (dir) != 0) | |
2129 | #else | |
570d7624 | 2130 | if (mkdir (dir, 0777) != 0) |
5e570b75 | 2131 | #endif |
a9f2aeae | 2132 | report_file_error ("Creating directory", list1 (directory)); |
570d7624 | 2133 | |
32f4334d | 2134 | return Qnil; |
570d7624 JB |
2135 | } |
2136 | ||
9d8f3bd9 MA |
2137 | DEFUN ("delete-directory-internal", Fdelete_directory_internal, |
2138 | Sdelete_directory_internal, 1, 1, 0, | |
efdc16c9 | 2139 | doc: /* Delete the directory named DIRECTORY. Does not follow symlinks. */) |
5842a27b | 2140 | (Lisp_Object directory) |
570d7624 | 2141 | { |
19290c65 | 2142 | const unsigned char *dir; |
32f4334d | 2143 | Lisp_Object handler; |
b1d1b865 | 2144 | Lisp_Object encoded_dir; |
570d7624 | 2145 | |
b7826503 | 2146 | CHECK_STRING (directory); |
3b7f6e60 | 2147 | directory = Fdirectory_file_name (Fexpand_file_name (directory, Qnil)); |
b1d1b865 | 2148 | encoded_dir = ENCODE_FILE (directory); |
d5db4077 | 2149 | dir = SDATA (encoded_dir); |
b1d1b865 | 2150 | |
570d7624 | 2151 | if (rmdir (dir) != 0) |
a9f2aeae | 2152 | report_file_error ("Removing directory", list1 (directory)); |
570d7624 JB |
2153 | |
2154 | return Qnil; | |
2155 | } | |
2156 | ||
2e2bbddb | 2157 | DEFUN ("delete-file", Fdelete_file, Sdelete_file, 1, 2, |
f1a5d776 CY |
2158 | "(list (read-file-name \ |
2159 | (if (and delete-by-moving-to-trash (null current-prefix-arg)) \ | |
2160 | \"Move file to trash: \" \"Delete file: \") \ | |
2161 | nil default-directory (confirm-nonexistent-file-or-buffer)) \ | |
2162 | (null current-prefix-arg))", | |
efdc16c9 | 2163 | doc: /* Delete file named FILENAME. If it is a symlink, remove the symlink. |
53967e09 | 2164 | If file has multiple names, it continues to exist with the other names. |
f1a5d776 CY |
2165 | TRASH non-nil means to trash the file instead of deleting, provided |
2166 | `delete-by-moving-to-trash' is non-nil. | |
53967e09 | 2167 | |
f1a5d776 CY |
2168 | When called interactively, TRASH is t if no prefix argument is given. |
2169 | With a prefix argument, TRASH is nil. */) | |
5842a27b | 2170 | (Lisp_Object filename, Lisp_Object trash) |
570d7624 | 2171 | { |
32f4334d | 2172 | Lisp_Object handler; |
b1d1b865 | 2173 | Lisp_Object encoded_file; |
efdc16c9 | 2174 | struct gcpro gcpro1; |
b1d1b865 | 2175 | |
efdc16c9 | 2176 | GCPRO1 (filename); |
b4bd27c5 RS |
2177 | if (!NILP (Ffile_directory_p (filename)) |
2178 | && NILP (Ffile_symlink_p (filename))) | |
24b1ddad KS |
2179 | xsignal2 (Qfile_error, |
2180 | build_string ("Removing old name: is a directory"), | |
2181 | filename); | |
efdc16c9 | 2182 | UNGCPRO; |
570d7624 | 2183 | filename = Fexpand_file_name (filename, Qnil); |
32f4334d | 2184 | |
49307295 | 2185 | handler = Ffind_file_name_handler (filename, Qdelete_file); |
32f4334d | 2186 | if (!NILP (handler)) |
f5783df3 | 2187 | return call3 (handler, Qdelete_file, filename, trash); |
32f4334d | 2188 | |
f1a5d776 | 2189 | if (delete_by_moving_to_trash && !NILP (trash)) |
6cf29fe8 JR |
2190 | return call1 (Qmove_file_to_trash, filename); |
2191 | ||
b1d1b865 RS |
2192 | encoded_file = ENCODE_FILE (filename); |
2193 | ||
d5db4077 | 2194 | if (0 > unlink (SDATA (encoded_file))) |
a9f2aeae | 2195 | report_file_error ("Removing old name", list1 (filename)); |
8a9b0da9 | 2196 | return Qnil; |
570d7624 JB |
2197 | } |
2198 | ||
385b6cc7 | 2199 | static Lisp_Object |
971de7fb | 2200 | internal_delete_file_1 (Lisp_Object ignore) |
385b6cc7 RS |
2201 | { |
2202 | return Qt; | |
2203 | } | |
2204 | ||
53967e09 | 2205 | /* Delete file FILENAME, returning 1 if successful and 0 if failed. |
f1a5d776 | 2206 | This ignores `delete-by-moving-to-trash'. */ |
385b6cc7 RS |
2207 | |
2208 | int | |
f1a5d776 | 2209 | internal_delete_file (Lisp_Object filename) |
385b6cc7 | 2210 | { |
a3911e8c | 2211 | Lisp_Object tem; |
53967e09 | 2212 | |
f1a5d776 | 2213 | tem = internal_condition_case_2 (Fdelete_file, filename, Qnil, |
a3911e8c KR |
2214 | Qt, internal_delete_file_1); |
2215 | return NILP (tem); | |
385b6cc7 RS |
2216 | } |
2217 | \f | |
570d7624 | 2218 | DEFUN ("rename-file", Frename_file, Srename_file, 2, 3, |
7c0f6118 | 2219 | "fRename file: \nGRename %s to file: \np", |
a4e03fe5 | 2220 | doc: /* Rename FILE as NEWNAME. Both args must be strings. |
8c1a1077 PJ |
2221 | If file has names other than FILE, it continues to have those names. |
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; |
f72b5416 JD |
2229 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5; |
2230 | Lisp_Object encoded_file, encoded_newname, symlink_target; | |
570d7624 | 2231 | |
f72b5416 JD |
2232 | symlink_target = encoded_file = encoded_newname = Qnil; |
2233 | GCPRO5 (file, newname, encoded_file, encoded_newname, symlink_target); | |
b7826503 PJ |
2234 | CHECK_STRING (file); |
2235 | CHECK_STRING (newname); | |
3b7f6e60 | 2236 | file = Fexpand_file_name (file, Qnil); |
1ffc5c90 | 2237 | |
f83caf70 EZ |
2238 | if ((!NILP (Ffile_directory_p (newname))) |
2239 | #ifdef DOS_NT | |
2240 | /* If the file names are identical but for the case, | |
2241 | don't attempt to move directory to itself. */ | |
2242 | && (NILP (Fstring_equal (Fdowncase (file), Fdowncase (newname)))) | |
2243 | #endif | |
2244 | ) | |
8719abec CY |
2245 | { |
2246 | Lisp_Object fname = NILP (Ffile_directory_p (file)) | |
2247 | ? file : Fdirectory_file_name (file); | |
2248 | newname = Fexpand_file_name (Ffile_name_nondirectory (fname), newname); | |
2249 | } | |
1ffc5c90 RS |
2250 | else |
2251 | newname = Fexpand_file_name (newname, Qnil); | |
32f4334d RS |
2252 | |
2253 | /* If the file name has special constructs in it, | |
2254 | call the corresponding file handler. */ | |
3b7f6e60 | 2255 | handler = Ffind_file_name_handler (file, Qrename_file); |
51cf6d37 | 2256 | if (NILP (handler)) |
49307295 | 2257 | handler = Ffind_file_name_handler (newname, Qrename_file); |
32f4334d | 2258 | if (!NILP (handler)) |
36712b0a | 2259 | RETURN_UNGCPRO (call4 (handler, Qrename_file, |
3b7f6e60 | 2260 | file, newname, ok_if_already_exists)); |
32f4334d | 2261 | |
b1d1b865 RS |
2262 | encoded_file = ENCODE_FILE (file); |
2263 | encoded_newname = ENCODE_FILE (newname); | |
2264 | ||
bc77278f EZ |
2265 | #ifdef DOS_NT |
2266 | /* If the file names are identical but for the case, don't ask for | |
2267 | confirmation: they simply want to change the letter-case of the | |
2268 | file name. */ | |
2269 | if (NILP (Fstring_equal (Fdowncase (file), Fdowncase (newname)))) | |
2270 | #endif | |
265a9e55 | 2271 | if (NILP (ok_if_already_exists) |
93c30b5f | 2272 | || INTEGERP (ok_if_already_exists)) |
2f868094 | 2273 | barf_or_query_if_file_exists (newname, "rename to it", |
b8b29dc9 | 2274 | INTEGERP (ok_if_already_exists), 0, 0); |
d5db4077 | 2275 | if (0 > rename (SDATA (encoded_file), SDATA (encoded_newname))) |
570d7624 JB |
2276 | { |
2277 | if (errno == EXDEV) | |
2278 | { | |
6bddfc97 | 2279 | int count; |
440c7d00 | 2280 | #ifdef S_IFLNK |
f72b5416 | 2281 | symlink_target = Ffile_symlink_p (file); |
440c7d00 JD |
2282 | if (! NILP (symlink_target)) |
2283 | Fmake_symbolic_link (symlink_target, newname, | |
f59abab9 | 2284 | NILP (ok_if_already_exists) ? Qnil : Qt); |
440c7d00 JD |
2285 | else |
2286 | #endif | |
b242dbfc | 2287 | if (!NILP (Ffile_directory_p (file))) |
8719abec CY |
2288 | call4 (Qcopy_directory, file, newname, Qt, Qnil); |
2289 | else | |
2290 | /* We have already prompted if it was an integer, so don't | |
2291 | have copy-file prompt again. */ | |
586702ce | 2292 | Fcopy_file (file, newname, |
586702ce | 2293 | NILP (ok_if_already_exists) ? Qnil : Qt, |
574c05e2 | 2294 | Qt, Qt, Qt); |
d550c425 | 2295 | |
6bddfc97 | 2296 | count = SPECPDL_INDEX (); |
d2b66acf | 2297 | specbind (Qdelete_by_moving_to_trash, Qnil); |
8fab2362 CY |
2298 | |
2299 | if (!NILP (Ffile_directory_p (file)) | |
2300 | #ifdef S_IFLNK | |
2301 | && NILP (symlink_target) | |
2302 | #endif | |
2303 | ) | |
8719abec CY |
2304 | call2 (Qdelete_directory, file, Qt); |
2305 | else | |
f1a5d776 | 2306 | Fdelete_file (file, Qnil); |
6bddfc97 | 2307 | unbind_to (count, Qnil); |
570d7624 JB |
2308 | } |
2309 | else | |
a9f2aeae | 2310 | report_file_error ("Renaming", list2 (file, newname)); |
570d7624 JB |
2311 | } |
2312 | UNGCPRO; | |
2313 | return Qnil; | |
2314 | } | |
2315 | ||
2316 | DEFUN ("add-name-to-file", Fadd_name_to_file, Sadd_name_to_file, 2, 3, | |
7c0f6118 | 2317 | "fAdd name to file: \nGName to add to %s: \np", |
a4e03fe5 | 2318 | doc: /* Give FILE additional name NEWNAME. Both args must be strings. |
8c1a1077 PJ |
2319 | Signals a `file-already-exists' error if a file NEWNAME already exists |
2320 | unless optional third argument OK-IF-ALREADY-EXISTS is non-nil. | |
2321 | A number as third arg means request confirmation if NEWNAME already exists. | |
2322 | This is what happens in interactive use with M-x. */) | |
5842a27b | 2323 | (Lisp_Object file, Lisp_Object newname, Lisp_Object ok_if_already_exists) |
570d7624 | 2324 | { |
32f4334d | 2325 | Lisp_Object handler; |
b1d1b865 RS |
2326 | Lisp_Object encoded_file, encoded_newname; |
2327 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; | |
570d7624 | 2328 | |
b1d1b865 RS |
2329 | GCPRO4 (file, newname, encoded_file, encoded_newname); |
2330 | encoded_file = encoded_newname = Qnil; | |
b7826503 PJ |
2331 | CHECK_STRING (file); |
2332 | CHECK_STRING (newname); | |
3b7f6e60 | 2333 | file = Fexpand_file_name (file, Qnil); |
1ffc5c90 RS |
2334 | |
2335 | if (!NILP (Ffile_directory_p (newname))) | |
2336 | newname = Fexpand_file_name (Ffile_name_nondirectory (file), newname); | |
2337 | else | |
2338 | newname = Fexpand_file_name (newname, Qnil); | |
32f4334d RS |
2339 | |
2340 | /* If the file name has special constructs in it, | |
2341 | call the corresponding file handler. */ | |
3b7f6e60 | 2342 | handler = Ffind_file_name_handler (file, Qadd_name_to_file); |
32f4334d | 2343 | if (!NILP (handler)) |
3b7f6e60 | 2344 | RETURN_UNGCPRO (call4 (handler, Qadd_name_to_file, file, |
36712b0a | 2345 | newname, ok_if_already_exists)); |
32f4334d | 2346 | |
adc6741c RS |
2347 | /* If the new name has special constructs in it, |
2348 | call the corresponding file handler. */ | |
2349 | handler = Ffind_file_name_handler (newname, Qadd_name_to_file); | |
2350 | if (!NILP (handler)) | |
3b7f6e60 | 2351 | RETURN_UNGCPRO (call4 (handler, Qadd_name_to_file, file, |
adc6741c RS |
2352 | newname, ok_if_already_exists)); |
2353 | ||
b1d1b865 RS |
2354 | encoded_file = ENCODE_FILE (file); |
2355 | encoded_newname = ENCODE_FILE (newname); | |
2356 | ||
265a9e55 | 2357 | if (NILP (ok_if_already_exists) |
93c30b5f | 2358 | || INTEGERP (ok_if_already_exists)) |
2f868094 | 2359 | barf_or_query_if_file_exists (newname, "make it a new name", |
b8b29dc9 | 2360 | INTEGERP (ok_if_already_exists), 0, 0); |
5e570b75 | 2361 | |
d5db4077 KR |
2362 | unlink (SDATA (newname)); |
2363 | if (0 > link (SDATA (encoded_file), SDATA (encoded_newname))) | |
a9f2aeae | 2364 | report_file_error ("Adding new name", list2 (file, newname)); |
570d7624 JB |
2365 | |
2366 | UNGCPRO; | |
2367 | return Qnil; | |
2368 | } | |
2369 | ||
570d7624 | 2370 | DEFUN ("make-symbolic-link", Fmake_symbolic_link, Smake_symbolic_link, 2, 3, |
7c0f6118 | 2371 | "FMake symbolic link to file: \nGMake symbolic link to file %s: \np", |
68780e2a RS |
2372 | doc: /* Make a symbolic link to FILENAME, named LINKNAME. |
2373 | Both args must be strings. | |
8c1a1077 PJ |
2374 | Signals a `file-already-exists' error if a file LINKNAME already exists |
2375 | unless optional third argument OK-IF-ALREADY-EXISTS is non-nil. | |
2376 | A number as third arg means request confirmation if LINKNAME already exists. | |
2377 | This happens for interactive use with M-x. */) | |
5842a27b | 2378 | (Lisp_Object filename, Lisp_Object linkname, Lisp_Object ok_if_already_exists) |
570d7624 | 2379 | { |
32f4334d | 2380 | Lisp_Object handler; |
b1d1b865 RS |
2381 | Lisp_Object encoded_filename, encoded_linkname; |
2382 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; | |
570d7624 | 2383 | |
b1d1b865 RS |
2384 | GCPRO4 (filename, linkname, encoded_filename, encoded_linkname); |
2385 | encoded_filename = encoded_linkname = Qnil; | |
b7826503 PJ |
2386 | CHECK_STRING (filename); |
2387 | CHECK_STRING (linkname); | |
d9bc1c99 RS |
2388 | /* If the link target has a ~, we must expand it to get |
2389 | a truly valid file name. Otherwise, do not expand; | |
2390 | we want to permit links to relative file names. */ | |
d5db4077 | 2391 | if (SREF (filename, 0) == '~') |
d9bc1c99 | 2392 | filename = Fexpand_file_name (filename, Qnil); |
1ffc5c90 RS |
2393 | |
2394 | if (!NILP (Ffile_directory_p (linkname))) | |
dac24db4 | 2395 | linkname = Fexpand_file_name (Ffile_name_nondirectory (filename), linkname); |
1ffc5c90 RS |
2396 | else |
2397 | linkname = Fexpand_file_name (linkname, Qnil); | |
32f4334d RS |
2398 | |
2399 | /* If the file name has special constructs in it, | |
2400 | call the corresponding file handler. */ | |
49307295 | 2401 | handler = Ffind_file_name_handler (filename, Qmake_symbolic_link); |
32f4334d | 2402 | if (!NILP (handler)) |
36712b0a KH |
2403 | RETURN_UNGCPRO (call4 (handler, Qmake_symbolic_link, filename, |
2404 | linkname, ok_if_already_exists)); | |
32f4334d | 2405 | |
adc6741c RS |
2406 | /* If the new link name has special constructs in it, |
2407 | call the corresponding file handler. */ | |
2408 | handler = Ffind_file_name_handler (linkname, Qmake_symbolic_link); | |
2409 | if (!NILP (handler)) | |
2410 | RETURN_UNGCPRO (call4 (handler, Qmake_symbolic_link, filename, | |
2411 | linkname, ok_if_already_exists)); | |
2412 | ||
e89b536d | 2413 | #ifdef S_IFLNK |
b1d1b865 RS |
2414 | encoded_filename = ENCODE_FILE (filename); |
2415 | encoded_linkname = ENCODE_FILE (linkname); | |
2416 | ||
265a9e55 | 2417 | if (NILP (ok_if_already_exists) |
93c30b5f | 2418 | || INTEGERP (ok_if_already_exists)) |
2f868094 | 2419 | barf_or_query_if_file_exists (linkname, "make it a link", |
b8b29dc9 | 2420 | INTEGERP (ok_if_already_exists), 0, 0); |
d5db4077 KR |
2421 | if (0 > symlink (SDATA (encoded_filename), |
2422 | SDATA (encoded_linkname))) | |
570d7624 JB |
2423 | { |
2424 | /* If we didn't complain already, silently delete existing file. */ | |
2425 | if (errno == EEXIST) | |
2426 | { | |
d5db4077 KR |
2427 | unlink (SDATA (encoded_linkname)); |
2428 | if (0 <= symlink (SDATA (encoded_filename), | |
2429 | SDATA (encoded_linkname))) | |
1a04498e KH |
2430 | { |
2431 | UNGCPRO; | |
2432 | return Qnil; | |
2433 | } | |
570d7624 JB |
2434 | } |
2435 | ||
a9f2aeae | 2436 | report_file_error ("Making symbolic link", list2 (filename, linkname)); |
570d7624 JB |
2437 | } |
2438 | UNGCPRO; | |
2439 | return Qnil; | |
e89b536d MA |
2440 | |
2441 | #else | |
2442 | UNGCPRO; | |
2443 | xsignal1 (Qfile_error, build_string ("Symbolic links are not supported")); | |
2444 | ||
570d7624 | 2445 | #endif /* S_IFLNK */ |
e89b536d | 2446 | } |
570d7624 | 2447 | |
570d7624 JB |
2448 | \f |
2449 | DEFUN ("file-name-absolute-p", Ffile_name_absolute_p, Sfile_name_absolute_p, | |
2450 | 1, 1, 0, | |
8c1a1077 PJ |
2451 | doc: /* Return t if file FILENAME specifies an absolute file name. |
2452 | On Unix, this is a name starting with a `/' or a `~'. */) | |
5842a27b | 2453 | (Lisp_Object filename) |
570d7624 | 2454 | { |
b7826503 | 2455 | CHECK_STRING (filename); |
c70a4df6 | 2456 | return file_name_absolute_p (SDATA (filename)) ? Qt : Qnil; |
570d7624 | 2457 | } |
3beeedfe RS |
2458 | \f |
2459 | /* Return nonzero if file FILENAME exists and can be executed. */ | |
2460 | ||
2461 | static int | |
971de7fb | 2462 | check_executable (char *filename) |
3beeedfe | 2463 | { |
3be3c08e RS |
2464 | #ifdef DOS_NT |
2465 | int len = strlen (filename); | |
2466 | char *suffix; | |
2467 | struct stat st; | |
2468 | if (stat (filename, &st) < 0) | |
2469 | return 0; | |
199607e4 | 2470 | return ((st.st_mode & S_IEXEC) != 0); |
3be3c08e | 2471 | #else /* not DOS_NT */ |
de0be7dd RS |
2472 | #ifdef HAVE_EUIDACCESS |
2473 | return (euidaccess (filename, 1) >= 0); | |
3beeedfe RS |
2474 | #else |
2475 | /* Access isn't quite right because it uses the real uid | |
2476 | and we really want to test with the effective uid. | |
2477 | But Unix doesn't give us a right way to do it. */ | |
2478 | return (access (filename, 1) >= 0); | |
2479 | #endif | |
3be3c08e | 2480 | #endif /* not DOS_NT */ |
3beeedfe RS |
2481 | } |
2482 | ||
2483 | /* Return nonzero if file FILENAME exists and can be written. */ | |
2484 | ||
2485 | static int | |
971de7fb | 2486 | check_writable (char *filename) |
3beeedfe | 2487 | { |
3be3c08e RS |
2488 | #ifdef MSDOS |
2489 | struct stat st; | |
2490 | if (stat (filename, &st) < 0) | |
2491 | return 0; | |
2492 | return (st.st_mode & S_IWRITE || (st.st_mode & S_IFMT) == S_IFDIR); | |
2493 | #else /* not MSDOS */ | |
41f3fb38 KH |
2494 | #ifdef HAVE_EUIDACCESS |
2495 | return (euidaccess (filename, 2) >= 0); | |
3beeedfe RS |
2496 | #else |
2497 | /* Access isn't quite right because it uses the real uid | |
2498 | and we really want to test with the effective uid. | |
2499 | But Unix doesn't give us a right way to do it. | |
2500 | Opening with O_WRONLY could work for an ordinary file, | |
2501 | but would lose for directories. */ | |
2502 | return (access (filename, 2) >= 0); | |
2503 | #endif | |
3be3c08e | 2504 | #endif /* not MSDOS */ |
3beeedfe | 2505 | } |
570d7624 JB |
2506 | |
2507 | DEFUN ("file-exists-p", Ffile_exists_p, Sfile_exists_p, 1, 1, 0, | |
68780e2a RS |
2508 | doc: /* Return t if file FILENAME exists (whether or not you can read it.) |
2509 | See also `file-readable-p' and `file-attributes'. | |
2510 | This returns nil for a symlink to a nonexistent file. | |
2511 | Use `file-symlink-p' to test for such links. */) | |
5842a27b | 2512 | (Lisp_Object filename) |
570d7624 | 2513 | { |
199607e4 | 2514 | Lisp_Object absname; |
32f4334d | 2515 | Lisp_Object handler; |
4018b5ef | 2516 | struct stat statbuf; |
570d7624 | 2517 | |
b7826503 | 2518 | CHECK_STRING (filename); |
199607e4 | 2519 | absname = Fexpand_file_name (filename, Qnil); |
32f4334d RS |
2520 | |
2521 | /* If the file name has special constructs in it, | |
2522 | call the corresponding file handler. */ | |
199607e4 | 2523 | handler = Ffind_file_name_handler (absname, Qfile_exists_p); |
32f4334d | 2524 | if (!NILP (handler)) |
199607e4 | 2525 | return call2 (handler, Qfile_exists_p, absname); |
32f4334d | 2526 | |
b1d1b865 RS |
2527 | absname = ENCODE_FILE (absname); |
2528 | ||
d5db4077 | 2529 | return (stat (SDATA (absname), &statbuf) >= 0) ? Qt : Qnil; |
570d7624 JB |
2530 | } |
2531 | ||
2532 | DEFUN ("file-executable-p", Ffile_executable_p, Sfile_executable_p, 1, 1, 0, | |
8c1a1077 PJ |
2533 | doc: /* Return t if FILENAME can be executed by you. |
2534 | For a directory, this means you can access files in that directory. */) | |
5842a27b | 2535 | (Lisp_Object filename) |
570d7624 | 2536 | { |
199607e4 | 2537 | Lisp_Object absname; |
32f4334d | 2538 | Lisp_Object handler; |
570d7624 | 2539 | |
b7826503 | 2540 | CHECK_STRING (filename); |
199607e4 | 2541 | absname = Fexpand_file_name (filename, Qnil); |
32f4334d RS |
2542 | |
2543 | /* If the file name has special constructs in it, | |
2544 | call the corresponding file handler. */ | |
199607e4 | 2545 | handler = Ffind_file_name_handler (absname, Qfile_executable_p); |
32f4334d | 2546 | if (!NILP (handler)) |
199607e4 | 2547 | return call2 (handler, Qfile_executable_p, absname); |
32f4334d | 2548 | |
b1d1b865 RS |
2549 | absname = ENCODE_FILE (absname); |
2550 | ||
d5db4077 | 2551 | return (check_executable (SDATA (absname)) ? Qt : Qnil); |
570d7624 JB |
2552 | } |
2553 | ||
2554 | DEFUN ("file-readable-p", Ffile_readable_p, Sfile_readable_p, 1, 1, 0, | |
8c1a1077 PJ |
2555 | doc: /* Return t if file FILENAME exists and you can read it. |
2556 | See also `file-exists-p' and `file-attributes'. */) | |
5842a27b | 2557 | (Lisp_Object filename) |
570d7624 | 2558 | { |
199607e4 | 2559 | Lisp_Object absname; |
32f4334d | 2560 | Lisp_Object handler; |
4018b5ef | 2561 | int desc; |
bb369dc6 RS |
2562 | int flags; |
2563 | struct stat statbuf; | |
570d7624 | 2564 | |
b7826503 | 2565 | CHECK_STRING (filename); |
199607e4 | 2566 | absname = Fexpand_file_name (filename, Qnil); |
32f4334d RS |
2567 | |
2568 | /* If the file name has special constructs in it, | |
2569 | call the corresponding file handler. */ | |
199607e4 | 2570 | handler = Ffind_file_name_handler (absname, Qfile_readable_p); |
32f4334d | 2571 | if (!NILP (handler)) |
199607e4 | 2572 | return call2 (handler, Qfile_readable_p, absname); |
32f4334d | 2573 | |
b1d1b865 RS |
2574 | absname = ENCODE_FILE (absname); |
2575 | ||
fb4c6c96 AC |
2576 | #if defined(DOS_NT) || defined(macintosh) |
2577 | /* Under MS-DOS, Windows, and Macintosh, open does not work for | |
2578 | directories. */ | |
d5db4077 | 2579 | if (access (SDATA (absname), 0) == 0) |
a8a7d065 RS |
2580 | return Qt; |
2581 | return Qnil; | |
fb4c6c96 | 2582 | #else /* not DOS_NT and not macintosh */ |
bb369dc6 RS |
2583 | flags = O_RDONLY; |
2584 | #if defined (S_ISFIFO) && defined (O_NONBLOCK) | |
2585 | /* Opening a fifo without O_NONBLOCK can wait. | |
2586 | We don't want to wait. But we don't want to mess wth O_NONBLOCK | |
2587 | except in the case of a fifo, on a system which handles it. */ | |
d5db4077 | 2588 | desc = stat (SDATA (absname), &statbuf); |
bb369dc6 RS |
2589 | if (desc < 0) |
2590 | return Qnil; | |
2591 | if (S_ISFIFO (statbuf.st_mode)) | |
2592 | flags |= O_NONBLOCK; | |
2593 | #endif | |
d5db4077 | 2594 | desc = emacs_open (SDATA (absname), flags, 0); |
4018b5ef RS |
2595 | if (desc < 0) |
2596 | return Qnil; | |
68c45bf0 | 2597 | emacs_close (desc); |
4018b5ef | 2598 | return Qt; |
fb4c6c96 | 2599 | #endif /* not DOS_NT and not macintosh */ |
570d7624 JB |
2600 | } |
2601 | ||
f793dc6c RS |
2602 | /* Having this before file-symlink-p mysteriously caused it to be forgotten |
2603 | on the RT/PC. */ | |
2604 | DEFUN ("file-writable-p", Ffile_writable_p, Sfile_writable_p, 1, 1, 0, | |
8c1a1077 | 2605 | doc: /* Return t if file FILENAME can be written or created by you. */) |
5842a27b | 2606 | (Lisp_Object filename) |
f793dc6c | 2607 | { |
b1d1b865 | 2608 | Lisp_Object absname, dir, encoded; |
f793dc6c RS |
2609 | Lisp_Object handler; |
2610 | struct stat statbuf; | |
2611 | ||
b7826503 | 2612 | CHECK_STRING (filename); |
199607e4 | 2613 | absname = Fexpand_file_name (filename, Qnil); |
f793dc6c RS |
2614 | |
2615 | /* If the file name has special constructs in it, | |
2616 | call the corresponding file handler. */ | |
199607e4 | 2617 | handler = Ffind_file_name_handler (absname, Qfile_writable_p); |
f793dc6c | 2618 | if (!NILP (handler)) |
199607e4 | 2619 | return call2 (handler, Qfile_writable_p, absname); |
f793dc6c | 2620 | |
b1d1b865 | 2621 | encoded = ENCODE_FILE (absname); |
d5db4077 KR |
2622 | if (stat (SDATA (encoded), &statbuf) >= 0) |
2623 | return (check_writable (SDATA (encoded)) | |
f793dc6c | 2624 | ? Qt : Qnil); |
b1d1b865 | 2625 | |
199607e4 | 2626 | dir = Ffile_name_directory (absname); |
f793dc6c RS |
2627 | #ifdef MSDOS |
2628 | if (!NILP (dir)) | |
2629 | dir = Fdirectory_file_name (dir); | |
2630 | #endif /* MSDOS */ | |
b1d1b865 RS |
2631 | |
2632 | dir = ENCODE_FILE (dir); | |
e3e8a75a GM |
2633 | #ifdef WINDOWSNT |
2634 | /* The read-only attribute of the parent directory doesn't affect | |
2635 | whether a file or directory can be created within it. Some day we | |
2636 | should check ACLs though, which do affect this. */ | |
d5db4077 | 2637 | if (stat (SDATA (dir), &statbuf) < 0) |
e3e8a75a GM |
2638 | return Qnil; |
2639 | return (statbuf.st_mode & S_IFMT) == S_IFDIR ? Qt : Qnil; | |
2640 | #else | |
d5db4077 | 2641 | return (check_writable (!NILP (dir) ? (char *) SDATA (dir) : "") |
f793dc6c | 2642 | ? Qt : Qnil); |
e3e8a75a | 2643 | #endif |
f793dc6c RS |
2644 | } |
2645 | \f | |
1f8653eb | 2646 | DEFUN ("access-file", Faccess_file, Saccess_file, 2, 2, 0, |
8c1a1077 PJ |
2647 | doc: /* Access file FILENAME, and get an error if that does not work. |
2648 | The second argument STRING is used in the error message. | |
a4e03fe5 | 2649 | If there is no error, returns nil. */) |
5842a27b | 2650 | (Lisp_Object filename, Lisp_Object string) |
1f8653eb | 2651 | { |
49475635 | 2652 | Lisp_Object handler, encoded_filename, absname; |
1f8653eb RS |
2653 | int fd; |
2654 | ||
b7826503 | 2655 | CHECK_STRING (filename); |
49475635 EZ |
2656 | absname = Fexpand_file_name (filename, Qnil); |
2657 | ||
b7826503 | 2658 | CHECK_STRING (string); |
1f8653eb RS |
2659 | |
2660 | /* If the file name has special constructs in it, | |
2661 | call the corresponding file handler. */ | |
49475635 | 2662 | handler = Ffind_file_name_handler (absname, Qaccess_file); |
1f8653eb | 2663 | if (!NILP (handler)) |
49475635 | 2664 | return call3 (handler, Qaccess_file, absname, string); |
1f8653eb | 2665 | |
49475635 | 2666 | encoded_filename = ENCODE_FILE (absname); |
b1d1b865 | 2667 | |
d5db4077 | 2668 | fd = emacs_open (SDATA (encoded_filename), O_RDONLY, 0); |
1f8653eb | 2669 | if (fd < 0) |
d5db4077 | 2670 | report_file_error (SDATA (string), Fcons (filename, Qnil)); |
68c45bf0 | 2671 | emacs_close (fd); |
1f8653eb RS |
2672 | |
2673 | return Qnil; | |
2674 | } | |
2675 | \f | |
570d7624 | 2676 | DEFUN ("file-symlink-p", Ffile_symlink_p, Sfile_symlink_p, 1, 1, 0, |
8c1a1077 | 2677 | doc: /* Return non-nil if file FILENAME is the name of a symbolic link. |
1c353c74 | 2678 | The value is the link target, as a string. |
68780e2a RS |
2679 | Otherwise it returns nil. |
2680 | ||
2681 | This function returns t when given the name of a symlink that | |
2682 | points to a nonexistent file. */) | |
5842a27b | 2683 | (Lisp_Object filename) |
570d7624 | 2684 | { |
32f4334d | 2685 | Lisp_Object handler; |
570d7624 | 2686 | |
b7826503 | 2687 | CHECK_STRING (filename); |
570d7624 JB |
2688 | filename = Fexpand_file_name (filename, Qnil); |
2689 | ||
32f4334d RS |
2690 | /* If the file name has special constructs in it, |
2691 | call the corresponding file handler. */ | |
49307295 | 2692 | handler = Ffind_file_name_handler (filename, Qfile_symlink_p); |
32f4334d RS |
2693 | if (!NILP (handler)) |
2694 | return call2 (handler, Qfile_symlink_p, filename); | |
2695 | ||
5adcec23 JR |
2696 | #ifdef S_IFLNK |
2697 | { | |
2698 | char *buf; | |
2699 | int bufsize; | |
2700 | int valsize; | |
2701 | Lisp_Object val; | |
2702 | ||
b1d1b865 RS |
2703 | filename = ENCODE_FILE (filename); |
2704 | ||
81c3310d GM |
2705 | bufsize = 50; |
2706 | buf = NULL; | |
2707 | do | |
570d7624 | 2708 | { |
81c3310d GM |
2709 | bufsize *= 2; |
2710 | buf = (char *) xrealloc (buf, bufsize); | |
72af86bd | 2711 | memset (buf, 0, bufsize); |
efdc16c9 | 2712 | |
81c3310d | 2713 | errno = 0; |
d5db4077 | 2714 | valsize = readlink (SDATA (filename), buf, bufsize); |
bcdd93b3 GM |
2715 | if (valsize == -1) |
2716 | { | |
81c3310d GM |
2717 | #ifdef ERANGE |
2718 | /* HP-UX reports ERANGE if buffer is too small. */ | |
bcdd93b3 GM |
2719 | if (errno == ERANGE) |
2720 | valsize = bufsize; | |
2721 | else | |
81c3310d | 2722 | #endif |
bcdd93b3 GM |
2723 | { |
2724 | xfree (buf); | |
2725 | return Qnil; | |
2726 | } | |
81c3310d | 2727 | } |
570d7624 | 2728 | } |
81c3310d | 2729 | while (valsize >= bufsize); |
efdc16c9 | 2730 | |
570d7624 | 2731 | val = make_string (buf, valsize); |
8966b757 | 2732 | if (buf[0] == '/' && strchr (buf, ':')) |
69ac1891 | 2733 | val = concat2 (build_string ("/:"), val); |
9ac0d9e0 | 2734 | xfree (buf); |
cd913586 KH |
2735 | val = DECODE_FILE (val); |
2736 | return val; | |
5adcec23 | 2737 | } |
570d7624 JB |
2738 | #else /* not S_IFLNK */ |
2739 | return Qnil; | |
2740 | #endif /* not S_IFLNK */ | |
2741 | } | |
2742 | ||
570d7624 | 2743 | DEFUN ("file-directory-p", Ffile_directory_p, Sfile_directory_p, 1, 1, 0, |
8c1a1077 PJ |
2744 | doc: /* Return t if FILENAME names an existing directory. |
2745 | Symbolic links to directories count as directories. | |
2746 | See `file-symlink-p' to distinguish symlinks. */) | |
5842a27b | 2747 | (Lisp_Object filename) |
570d7624 | 2748 | { |
199607e4 | 2749 | register Lisp_Object absname; |
570d7624 | 2750 | struct stat st; |
32f4334d | 2751 | Lisp_Object handler; |
570d7624 | 2752 | |
199607e4 | 2753 | absname = expand_and_dir_to_file (filename, current_buffer->directory); |
570d7624 | 2754 | |
32f4334d RS |
2755 | /* If the file name has special constructs in it, |
2756 | call the corresponding file handler. */ | |
199607e4 | 2757 | handler = Ffind_file_name_handler (absname, Qfile_directory_p); |
32f4334d | 2758 | if (!NILP (handler)) |
199607e4 | 2759 | return call2 (handler, Qfile_directory_p, absname); |
32f4334d | 2760 | |
b1d1b865 RS |
2761 | absname = ENCODE_FILE (absname); |
2762 | ||
d5db4077 | 2763 | if (stat (SDATA (absname), &st) < 0) |
570d7624 JB |
2764 | return Qnil; |
2765 | return (st.st_mode & S_IFMT) == S_IFDIR ? Qt : Qnil; | |
2766 | } | |
2767 | ||
b72dea2a | 2768 | DEFUN ("file-accessible-directory-p", Ffile_accessible_directory_p, Sfile_accessible_directory_p, 1, 1, 0, |
e385ec41 RS |
2769 | doc: /* Return t if file FILENAME names a directory you can open. |
2770 | For the value to be t, FILENAME must specify the name of a directory as a file, | |
2771 | and the directory must allow you to open files in it. In order to use a | |
8c1a1077 PJ |
2772 | directory as a buffer's current directory, this predicate must return true. |
2773 | A directory name spec may be given instead; then the value is t | |
2774 | if the directory so specified exists and really is a readable and | |
2775 | searchable directory. */) | |
5842a27b | 2776 | (Lisp_Object filename) |
b72dea2a | 2777 | { |
32f4334d | 2778 | Lisp_Object handler; |
1a04498e | 2779 | int tem; |
d26859eb | 2780 | struct gcpro gcpro1; |
32f4334d RS |
2781 | |
2782 | /* If the file name has special constructs in it, | |
2783 | call the corresponding file handler. */ | |
49307295 | 2784 | handler = Ffind_file_name_handler (filename, Qfile_accessible_directory_p); |
32f4334d RS |
2785 | if (!NILP (handler)) |
2786 | return call2 (handler, Qfile_accessible_directory_p, filename); | |
2787 | ||
d26859eb | 2788 | GCPRO1 (filename); |
1a04498e KH |
2789 | tem = (NILP (Ffile_directory_p (filename)) |
2790 | || NILP (Ffile_executable_p (filename))); | |
d26859eb | 2791 | UNGCPRO; |
1a04498e | 2792 | return tem ? Qnil : Qt; |
b72dea2a JB |
2793 | } |
2794 | ||
f793dc6c | 2795 | DEFUN ("file-regular-p", Ffile_regular_p, Sfile_regular_p, 1, 1, 0, |
19a9c3b7 LH |
2796 | doc: /* Return t if FILENAME names a regular file. |
2797 | This is the sort of file that holds an ordinary stream of data bytes. | |
2798 | Symbolic links to regular files count as regular files. | |
2799 | See `file-symlink-p' to distinguish symlinks. */) | |
5842a27b | 2800 | (Lisp_Object filename) |
f793dc6c | 2801 | { |
199607e4 | 2802 | register Lisp_Object absname; |
f793dc6c RS |
2803 | struct stat st; |
2804 | Lisp_Object handler; | |
2805 | ||
199607e4 | 2806 | absname = expand_and_dir_to_file (filename, current_buffer->directory); |
f793dc6c RS |
2807 | |
2808 | /* If the file name has special constructs in it, | |
2809 | call the corresponding file handler. */ | |
199607e4 | 2810 | handler = Ffind_file_name_handler (absname, Qfile_regular_p); |
f793dc6c | 2811 | if (!NILP (handler)) |
199607e4 | 2812 | return call2 (handler, Qfile_regular_p, absname); |
f793dc6c | 2813 | |
b1d1b865 RS |
2814 | absname = ENCODE_FILE (absname); |
2815 | ||
c1c4693e RS |
2816 | #ifdef WINDOWSNT |
2817 | { | |
2818 | int result; | |
2819 | Lisp_Object tem = Vw32_get_true_file_attributes; | |
2820 | ||
2821 | /* Tell stat to use expensive method to get accurate info. */ | |
2822 | Vw32_get_true_file_attributes = Qt; | |
d5db4077 | 2823 | result = stat (SDATA (absname), &st); |
c1c4693e RS |
2824 | Vw32_get_true_file_attributes = tem; |
2825 | ||
2826 | if (result < 0) | |
2827 | return Qnil; | |
2828 | return (st.st_mode & S_IFMT) == S_IFREG ? Qt : Qnil; | |
2829 | } | |
2830 | #else | |
d5db4077 | 2831 | if (stat (SDATA (absname), &st) < 0) |
f793dc6c RS |
2832 | return Qnil; |
2833 | return (st.st_mode & S_IFMT) == S_IFREG ? Qt : Qnil; | |
c1c4693e | 2834 | #endif |
f793dc6c RS |
2835 | } |
2836 | \f | |
574c05e2 KK |
2837 | DEFUN ("file-selinux-context", Ffile_selinux_context, |
2838 | Sfile_selinux_context, 1, 1, 0, | |
2839 | doc: /* Return SELinux context of file named FILENAME, | |
2840 | as a list ("user", "role", "type", "range"). Return (nil, nil, nil, nil) | |
2841 | if file does not exist, is not accessible, or SELinux is disabled */) | |
5842a27b | 2842 | (Lisp_Object filename) |
574c05e2 KK |
2843 | { |
2844 | Lisp_Object absname; | |
2845 | Lisp_Object values[4]; | |
2846 | Lisp_Object handler; | |
2847 | #if HAVE_LIBSELINUX | |
2848 | security_context_t con; | |
2849 | int conlength; | |
2850 | context_t context; | |
2851 | #endif | |
2852 | ||
2853 | absname = expand_and_dir_to_file (filename, current_buffer->directory); | |
2854 | ||
2855 | /* If the file name has special constructs in it, | |
2856 | call the corresponding file handler. */ | |
2857 | handler = Ffind_file_name_handler (absname, Qfile_selinux_context); | |
2858 | if (!NILP (handler)) | |
2859 | return call2 (handler, Qfile_selinux_context, absname); | |
2860 | ||
2861 | absname = ENCODE_FILE (absname); | |
2862 | ||
2863 | values[0] = Qnil; | |
2864 | values[1] = Qnil; | |
2865 | values[2] = Qnil; | |
2866 | values[3] = Qnil; | |
2867 | #if HAVE_LIBSELINUX | |
2868 | if (is_selinux_enabled ()) | |
2869 | { | |
2870 | conlength = lgetfilecon (SDATA (absname), &con); | |
2871 | if (conlength > 0) | |
2872 | { | |
2873 | context = context_new (con); | |
45841e65 KK |
2874 | if (context_user_get (context)) |
2875 | values[0] = build_string (context_user_get (context)); | |
2876 | if (context_role_get (context)) | |
2877 | values[1] = build_string (context_role_get (context)); | |
2878 | if (context_type_get (context)) | |
2879 | values[2] = build_string (context_type_get (context)); | |
2880 | if (context_range_get (context)) | |
2881 | values[3] = build_string (context_range_get (context)); | |
574c05e2 KK |
2882 | context_free (context); |
2883 | } | |
2884 | if (con) | |
2885 | freecon (con); | |
2886 | } | |
2887 | #endif | |
2888 | ||
2889 | return Flist (sizeof(values) / sizeof(values[0]), values); | |
2890 | } | |
2891 | \f | |
2892 | DEFUN ("set-file-selinux-context", Fset_file_selinux_context, | |
2893 | Sset_file_selinux_context, 2, 2, 0, | |
2894 | doc: /* Set SELinux context of file named FILENAME to CONTEXT | |
2895 | as a list ("user", "role", "type", "range"). Has no effect if SELinux | |
2896 | is disabled. */) | |
5842a27b | 2897 | (Lisp_Object filename, Lisp_Object context) |
574c05e2 KK |
2898 | { |
2899 | Lisp_Object absname, encoded_absname; | |
2900 | Lisp_Object handler; | |
2901 | Lisp_Object user = CAR_SAFE (context); | |
2902 | Lisp_Object role = CAR_SAFE (CDR_SAFE (context)); | |
2903 | Lisp_Object type = CAR_SAFE (CDR_SAFE (CDR_SAFE (context))); | |
2904 | Lisp_Object range = CAR_SAFE (CDR_SAFE (CDR_SAFE (CDR_SAFE (context)))); | |
2905 | #if HAVE_LIBSELINUX | |
2906 | security_context_t con; | |
2907 | int fail, conlength; | |
2908 | context_t parsed_con; | |
2909 | #endif | |
2910 | ||
2911 | absname = Fexpand_file_name (filename, current_buffer->directory); | |
2912 | ||
2913 | /* If the file name has special constructs in it, | |
2914 | call the corresponding file handler. */ | |
2915 | handler = Ffind_file_name_handler (absname, Qset_file_selinux_context); | |
2916 | if (!NILP (handler)) | |
2917 | return call3 (handler, Qset_file_selinux_context, absname, context); | |
2918 | ||
2919 | encoded_absname = ENCODE_FILE (absname); | |
2920 | ||
2921 | #if HAVE_LIBSELINUX | |
2922 | if (is_selinux_enabled ()) | |
2923 | { | |
2924 | /* Get current file context. */ | |
2925 | conlength = lgetfilecon (SDATA (encoded_absname), &con); | |
2926 | if (conlength > 0) | |
2927 | { | |
2928 | parsed_con = context_new (con); | |
2929 | /* Change the parts defined in the parameter.*/ | |
2930 | if (STRINGP (user)) | |
2931 | { | |
2932 | if (context_user_set (parsed_con, SDATA (user))) | |
2933 | error ("Doing context_user_set"); | |
2934 | } | |
2935 | if (STRINGP (role)) | |
2936 | { | |
2937 | if (context_role_set (parsed_con, SDATA (role))) | |
2938 | error ("Doing context_role_set"); | |
2939 | } | |
2940 | if (STRINGP (type)) | |
2941 | { | |
2942 | if (context_type_set (parsed_con, SDATA (type))) | |
2943 | error ("Doing context_type_set"); | |
2944 | } | |
2945 | if (STRINGP (range)) | |
2946 | { | |
2947 | if (context_range_set (parsed_con, SDATA (range))) | |
2948 | error ("Doing context_range_set"); | |
2949 | } | |
2950 | ||
2951 | /* Set the modified context back to the file. */ | |
2952 | fail = lsetfilecon (SDATA (encoded_absname), context_str (parsed_con)); | |
2953 | if (fail) | |
2954 | report_file_error ("Doing lsetfilecon", Fcons (absname, Qnil)); | |
2955 | ||
2956 | context_free (parsed_con); | |
2957 | } | |
2958 | else | |
2959 | report_file_error("Doing lgetfilecon", Fcons (absname, Qnil)); | |
2960 | ||
2961 | if (con) | |
2962 | freecon (con); | |
2963 | } | |
2964 | #endif | |
2965 | ||
2966 | return Qnil; | |
2967 | } | |
2968 | \f | |
570d7624 | 2969 | DEFUN ("file-modes", Ffile_modes, Sfile_modes, 1, 1, 0, |
d4a42098 KS |
2970 | doc: /* Return mode bits of file named FILENAME, as an integer. |
2971 | Return nil, if file does not exist or is not accessible. */) | |
5842a27b | 2972 | (Lisp_Object filename) |
570d7624 | 2973 | { |
199607e4 | 2974 | Lisp_Object absname; |
570d7624 | 2975 | struct stat st; |
32f4334d | 2976 | Lisp_Object handler; |
570d7624 | 2977 | |
199607e4 | 2978 | absname = expand_and_dir_to_file (filename, current_buffer->directory); |
570d7624 | 2979 | |
32f4334d RS |
2980 | /* If the file name has special constructs in it, |
2981 | call the corresponding file handler. */ | |
199607e4 | 2982 | handler = Ffind_file_name_handler (absname, Qfile_modes); |
32f4334d | 2983 | if (!NILP (handler)) |
199607e4 | 2984 | return call2 (handler, Qfile_modes, absname); |
32f4334d | 2985 | |
b1d1b865 RS |
2986 | absname = ENCODE_FILE (absname); |
2987 | ||
d5db4077 | 2988 | if (stat (SDATA (absname), &st) < 0) |
570d7624 | 2989 | return Qnil; |
3ace87e3 | 2990 | |
570d7624 JB |
2991 | return make_number (st.st_mode & 07777); |
2992 | } | |
2993 | ||
09fbdf6c MC |
2994 | DEFUN ("set-file-modes", Fset_file_modes, Sset_file_modes, 2, 2, |
2995 | "(let ((file (read-file-name \"File: \"))) \ | |
2996 | (list file (read-file-modes nil file)))", | |
8c1a1077 | 2997 | doc: /* Set mode bits of file named FILENAME to MODE (an integer). |
ea429250 EZ |
2998 | Only the 12 low bits of MODE are used. |
2999 | ||
3000 | Interactively, mode bits are read by `read-file-modes', which accepts | |
712adc82 | 3001 | symbolic notation, like the `chmod' command from GNU Coreutils. */) |
5842a27b | 3002 | (Lisp_Object filename, Lisp_Object mode) |
570d7624 | 3003 | { |
b1d1b865 | 3004 | Lisp_Object absname, encoded_absname; |
32f4334d | 3005 | Lisp_Object handler; |
570d7624 | 3006 | |
199607e4 | 3007 | absname = Fexpand_file_name (filename, current_buffer->directory); |
b7826503 | 3008 | CHECK_NUMBER (mode); |
570d7624 | 3009 | |
32f4334d RS |
3010 | /* If the file name has special constructs in it, |
3011 | call the corresponding file handler. */ | |
199607e4 | 3012 | handler = Ffind_file_name_handler (absname, Qset_file_modes); |
32f4334d | 3013 | if (!NILP (handler)) |
199607e4 | 3014 | return call3 (handler, Qset_file_modes, absname, mode); |
32f4334d | 3015 | |
b1d1b865 RS |
3016 | encoded_absname = ENCODE_FILE (absname); |
3017 | ||
d5db4077 | 3018 | if (chmod (SDATA (encoded_absname), XINT (mode)) < 0) |
199607e4 | 3019 | report_file_error ("Doing chmod", Fcons (absname, Qnil)); |
570d7624 JB |
3020 | |
3021 | return Qnil; | |
3022 | } | |
3023 | ||
c24e9a53 | 3024 | DEFUN ("set-default-file-modes", Fset_default_file_modes, Sset_default_file_modes, 1, 1, 0, |
8c1a1077 PJ |
3025 | doc: /* Set the file permission bits for newly created files. |
3026 | The argument MODE should be an integer; only the low 9 bits are used. | |
3027 | This setting is inherited by subprocesses. */) | |
5842a27b | 3028 | (Lisp_Object mode) |
36a8c287 | 3029 | { |
b7826503 | 3030 | CHECK_NUMBER (mode); |
199607e4 | 3031 | |
5f85ea58 | 3032 | umask ((~ XINT (mode)) & 0777); |
36a8c287 JB |
3033 | |
3034 | return Qnil; | |
3035 | } | |
3036 | ||
c24e9a53 | 3037 | DEFUN ("default-file-modes", Fdefault_file_modes, Sdefault_file_modes, 0, 0, 0, |
8c1a1077 PJ |
3038 | doc: /* Return the default file protection for created files. |
3039 | The value is an integer. */) | |
5842a27b | 3040 | (void) |
36a8c287 | 3041 | { |
5f85ea58 RS |
3042 | int realmask; |
3043 | Lisp_Object value; | |
36a8c287 | 3044 | |
5f85ea58 RS |
3045 | realmask = umask (0); |
3046 | umask (realmask); | |
36a8c287 | 3047 | |
46283abe | 3048 | XSETINT (value, (~ realmask) & 0777); |
5f85ea58 | 3049 | return value; |
36a8c287 | 3050 | } |
819da85b | 3051 | \f |
f57e2426 | 3052 | extern int lisp_time_argument (Lisp_Object, time_t *, int *); |
819da85b EZ |
3053 | |
3054 | DEFUN ("set-file-times", Fset_file_times, Sset_file_times, 1, 2, 0, | |
3055 | doc: /* Set times of file FILENAME to TIME. | |
3056 | Set both access and modification times. | |
3057 | Return t on success, else nil. | |
3058 | Use the current time if TIME is nil. TIME is in the format of | |
3059 | `current-time'. */) | |
5842a27b | 3060 | (Lisp_Object filename, Lisp_Object time) |
819da85b EZ |
3061 | { |
3062 | Lisp_Object absname, encoded_absname; | |
3063 | Lisp_Object handler; | |
3064 | time_t sec; | |
3065 | int usec; | |
3066 | ||
3067 | if (! lisp_time_argument (time, &sec, &usec)) | |
3068 | error ("Invalid time specification"); | |
3069 | ||
3070 | absname = Fexpand_file_name (filename, current_buffer->directory); | |
3071 | ||
3072 | /* If the file name has special constructs in it, | |
3073 | call the corresponding file handler. */ | |
3074 | handler = Ffind_file_name_handler (absname, Qset_file_times); | |
3075 | if (!NILP (handler)) | |
3076 | return call3 (handler, Qset_file_times, absname, time); | |
3077 | ||
3078 | encoded_absname = ENCODE_FILE (absname); | |
5df5e07c | 3079 | |
819da85b EZ |
3080 | { |
3081 | EMACS_TIME t; | |
3082 | ||
3083 | EMACS_SET_SECS (t, sec); | |
3084 | EMACS_SET_USECS (t, usec); | |
3085 | ||
3086 | if (set_file_times (SDATA (encoded_absname), t, t)) | |
3087 | { | |
3088 | #ifdef DOS_NT | |
3089 | struct stat st; | |
3090 | ||
3091 | /* Setting times on a directory always fails. */ | |
3092 | if (stat (SDATA (encoded_absname), &st) == 0 | |
3093 | && (st.st_mode & S_IFMT) == S_IFDIR) | |
3094 | return Qnil; | |
3095 | #endif | |
3096 | report_file_error ("Setting file times", Fcons (absname, Qnil)); | |
3097 | return Qnil; | |
3098 | } | |
3099 | } | |
5df5e07c | 3100 | |
819da85b EZ |
3101 | return Qt; |
3102 | } | |
f793dc6c | 3103 | \f |
697c17a2 | 3104 | #ifdef HAVE_SYNC |
85ffea93 | 3105 | DEFUN ("unix-sync", Funix_sync, Sunix_sync, 0, 0, "", |
8c1a1077 | 3106 | doc: /* Tell Unix to finish all pending disk updates. */) |
5842a27b | 3107 | (void) |
85ffea93 RS |
3108 | { |
3109 | sync (); | |
3110 | return Qnil; | |
3111 | } | |
3112 | ||
697c17a2 | 3113 | #endif /* HAVE_SYNC */ |
85ffea93 | 3114 | |
570d7624 | 3115 | DEFUN ("file-newer-than-file-p", Ffile_newer_than_file_p, Sfile_newer_than_file_p, 2, 2, 0, |
8c1a1077 PJ |
3116 | doc: /* Return t if file FILE1 is newer than file FILE2. |
3117 | If FILE1 does not exist, the answer is nil; | |
3118 | otherwise, if FILE2 does not exist, the answer is t. */) | |
5842a27b | 3119 | (Lisp_Object file1, Lisp_Object file2) |
570d7624 | 3120 | { |
199607e4 | 3121 | Lisp_Object absname1, absname2; |
570d7624 JB |
3122 | struct stat st; |
3123 | int mtime1; | |
32f4334d | 3124 | Lisp_Object handler; |
09121adc | 3125 | struct gcpro gcpro1, gcpro2; |
570d7624 | 3126 | |
b7826503 PJ |
3127 | CHECK_STRING (file1); |
3128 | CHECK_STRING (file2); | |
570d7624 | 3129 | |
199607e4 RS |
3130 | absname1 = Qnil; |
3131 | GCPRO2 (absname1, file2); | |
3132 | absname1 = expand_and_dir_to_file (file1, current_buffer->directory); | |
3133 | absname2 = expand_and_dir_to_file (file2, current_buffer->directory); | |
09121adc | 3134 | UNGCPRO; |
570d7624 | 3135 | |
32f4334d RS |
3136 | /* If the file name has special constructs in it, |
3137 | call the corresponding file handler. */ | |
199607e4 | 3138 | handler = Ffind_file_name_handler (absname1, Qfile_newer_than_file_p); |
51cf6d37 | 3139 | if (NILP (handler)) |
199607e4 | 3140 | handler = Ffind_file_name_handler (absname2, Qfile_newer_than_file_p); |
32f4334d | 3141 | if (!NILP (handler)) |
199607e4 | 3142 | return call3 (handler, Qfile_newer_than_file_p, absname1, absname2); |
32f4334d | 3143 | |
b1d1b865 RS |
3144 | GCPRO2 (absname1, absname2); |
3145 | absname1 = ENCODE_FILE (absname1); | |
3146 | absname2 = ENCODE_FILE (absname2); | |
3147 | UNGCPRO; | |
3148 | ||
d5db4077 | 3149 | if (stat (SDATA (absname1), &st) < 0) |
570d7624 JB |
3150 | return Qnil; |
3151 | ||
3152 | mtime1 = st.st_mtime; | |
3153 | ||
d5db4077 | 3154 | if (stat (SDATA (absname2), &st) < 0) |
570d7624 JB |
3155 | return Qt; |
3156 | ||
3157 | return (mtime1 > st.st_mtime) ? Qt : Qnil; | |
3158 | } | |
3159 | \f | |
5e570b75 | 3160 | #ifdef DOS_NT |
4c3c22f3 | 3161 | Lisp_Object Qfind_buffer_file_type; |
5e570b75 | 3162 | #endif /* DOS_NT */ |
4c3c22f3 | 3163 | |
6fdaa9a0 KH |
3164 | #ifndef READ_BUF_SIZE |
3165 | #define READ_BUF_SIZE (64 << 10) | |
3166 | #endif | |
3167 | ||
98a7d268 KH |
3168 | /* This function is called after Lisp functions to decide a coding |
3169 | system are called, or when they cause an error. Before they are | |
3170 | called, the current buffer is set unibyte and it contains only a | |
3171 | newly inserted text (thus the buffer was empty before the | |
3172 | insertion). | |
3173 | ||
3174 | The functions may set markers, overlays, text properties, or even | |
3175 | alter the buffer contents, change the current buffer. | |
3176 | ||
3177 | Here, we reset all those changes by: | |
3178 | o set back the current buffer. | |
3179 | o move all markers and overlays to BEG. | |
3180 | o remove all text properties. | |
3181 | o set back the buffer multibyteness. */ | |
f736ffbf KH |
3182 | |
3183 | static Lisp_Object | |
971de7fb | 3184 | decide_coding_unwind (Lisp_Object unwind_data) |
f736ffbf | 3185 | { |
98a7d268 | 3186 | Lisp_Object multibyte, undo_list, buffer; |
f736ffbf | 3187 | |
98a7d268 KH |
3188 | multibyte = XCAR (unwind_data); |
3189 | unwind_data = XCDR (unwind_data); | |
3190 | undo_list = XCAR (unwind_data); | |
3191 | buffer = XCDR (unwind_data); | |
3192 | ||
3193 | if (current_buffer != XBUFFER (buffer)) | |
3194 | set_buffer_internal (XBUFFER (buffer)); | |
3195 | adjust_markers_for_delete (BEG, BEG_BYTE, Z, Z_BYTE); | |
3196 | adjust_overlays_for_delete (BEG, Z - BEG); | |
3197 | BUF_INTERVALS (current_buffer) = 0; | |
3198 | TEMP_SET_PT_BOTH (BEG, BEG_BYTE); | |
3199 | ||
3200 | /* Now we are safe to change the buffer's multibyteness directly. */ | |
3201 | current_buffer->enable_multibyte_characters = multibyte; | |
3202 | current_buffer->undo_list = undo_list; | |
f736ffbf KH |
3203 | |
3204 | return Qnil; | |
3205 | } | |
3206 | ||
55587f8a | 3207 | |
1b978129 | 3208 | /* Used to pass values from insert-file-contents to read_non_regular. */ |
55587f8a | 3209 | |
1b978129 | 3210 | static int non_regular_fd; |
ae19ba7c SM |
3211 | static EMACS_INT non_regular_inserted; |
3212 | static EMACS_INT non_regular_nbytes; | |
55587f8a | 3213 | |
55587f8a | 3214 | |
1b978129 | 3215 | /* Read from a non-regular file. |
438105ed | 3216 | Read non_regular_nbytes bytes max from non_regular_fd. |
1b978129 GM |
3217 | Non_regular_inserted specifies where to put the read bytes. |
3218 | Value is the number of bytes read. */ | |
55587f8a GM |
3219 | |
3220 | static Lisp_Object | |
9c8a2331 | 3221 | read_non_regular (Lisp_Object ignore) |
55587f8a | 3222 | { |
ae19ba7c | 3223 | EMACS_INT nbytes; |
efdc16c9 | 3224 | |
1b978129 GM |
3225 | immediate_quit = 1; |
3226 | QUIT; | |
3227 | nbytes = emacs_read (non_regular_fd, | |
28c3eb5a | 3228 | BEG_ADDR + PT_BYTE - BEG_BYTE + non_regular_inserted, |
1b978129 | 3229 | non_regular_nbytes); |
1b978129 GM |
3230 | immediate_quit = 0; |
3231 | return make_number (nbytes); | |
3232 | } | |
55587f8a | 3233 | |
d0e2444e | 3234 | |
1b978129 GM |
3235 | /* Condition-case handler used when reading from non-regular files |
3236 | in insert-file-contents. */ | |
3237 | ||
3238 | static Lisp_Object | |
9c8a2331 | 3239 | read_non_regular_quit (Lisp_Object ignore) |
1b978129 | 3240 | { |
55587f8a GM |
3241 | return Qnil; |
3242 | } | |
3243 | ||
3244 | ||
570d7624 | 3245 | DEFUN ("insert-file-contents", Finsert_file_contents, Sinsert_file_contents, |
8c1a1077 PJ |
3246 | 1, 5, 0, |
3247 | doc: /* Insert contents of file FILENAME after point. | |
cf6d2357 | 3248 | Returns list of absolute file name and number of characters inserted. |
6f2528d8 MR |
3249 | If second argument VISIT is non-nil, the buffer's visited filename and |
3250 | last save file modtime are set, and it is marked unmodified. If | |
3251 | visiting and the file does not exist, visiting is completed before the | |
3252 | error is signaled. | |
3253 | ||
3254 | The optional third and fourth arguments BEG and END specify what portion | |
3255 | of the file to insert. These arguments count bytes in the file, not | |
3256 | characters in the buffer. If VISIT is non-nil, BEG and END must be nil. | |
3257 | ||
3258 | If optional fifth argument REPLACE is non-nil, replace the current | |
3259 | buffer contents (in the accessible portion) with the file contents. | |
3260 | This is better than simply deleting and inserting the whole thing | |
3261 | because (1) it preserves some marker positions and (2) it puts less data | |
3262 | in the undo list. When REPLACE is non-nil, the second return value is | |
3263 | the number of characters that replace previous buffer contents. | |
3264 | ||
3265 | This function does code conversion according to the value of | |
3266 | `coding-system-for-read' or `file-coding-system-alist', and sets the | |
3267 | variable `last-coding-system-used' to the coding system actually used. */) | |
5842a27b | 3268 | (Lisp_Object filename, Lisp_Object visit, Lisp_Object beg, Lisp_Object end, Lisp_Object replace) |
570d7624 JB |
3269 | { |
3270 | struct stat st; | |
3271 | register int fd; | |
ae19ba7c | 3272 | EMACS_INT inserted = 0; |
18a9f8d9 | 3273 | int nochange = 0; |
ae19ba7c SM |
3274 | register EMACS_INT how_much; |
3275 | register EMACS_INT unprocessed; | |
331379bf | 3276 | int count = SPECPDL_INDEX (); |
6f2528d8 MR |
3277 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5; |
3278 | Lisp_Object handler, val, insval, orig_filename, old_undo; | |
d6a3cc15 | 3279 | Lisp_Object p; |
ae19ba7c | 3280 | EMACS_INT total = 0; |
53c34c46 | 3281 | int not_regular = 0; |
feb9dc27 | 3282 | unsigned char read_buf[READ_BUF_SIZE]; |
6fdaa9a0 | 3283 | struct coding_system coding; |
3dbcf3f6 | 3284 | unsigned char buffer[1 << 14]; |
727a0b4a | 3285 | int replace_handled = 0; |
ec7adf26 | 3286 | int set_coding_system = 0; |
db327c7e | 3287 | Lisp_Object coding_system; |
1b978129 | 3288 | int read_quit = 0; |
490ee853 | 3289 | Lisp_Object old_Vdeactivate_mark = Vdeactivate_mark; |
68780e2a | 3290 | int we_locked_file = 0; |
db65a627 | 3291 | int deferred_remove_unwind_protect = 0; |
32f4334d | 3292 | |
95385625 RS |
3293 | if (current_buffer->base_buffer && ! NILP (visit)) |
3294 | error ("Cannot do file visiting in an indirect buffer"); | |
3295 | ||
3296 | if (!NILP (current_buffer->read_only)) | |
3297 | Fbarf_if_buffer_read_only (); | |
3298 | ||
32f4334d | 3299 | val = Qnil; |
d6a3cc15 | 3300 | p = Qnil; |
b1d1b865 | 3301 | orig_filename = Qnil; |
6f2528d8 | 3302 | old_undo = Qnil; |
32f4334d | 3303 | |
6f2528d8 | 3304 | GCPRO5 (filename, val, p, orig_filename, old_undo); |
570d7624 | 3305 | |
b7826503 | 3306 | CHECK_STRING (filename); |
570d7624 JB |
3307 | filename = Fexpand_file_name (filename, Qnil); |
3308 | ||
1c157f8d KH |
3309 | /* The value Qnil means that the coding system is not yet |
3310 | decided. */ | |
3311 | coding_system = Qnil; | |
3312 | ||
32f4334d RS |
3313 | /* If the file name has special constructs in it, |
3314 | call the corresponding file handler. */ | |
49307295 | 3315 | handler = Ffind_file_name_handler (filename, Qinsert_file_contents); |
32f4334d RS |
3316 | if (!NILP (handler)) |
3317 | { | |
3d0387c0 RS |
3318 | val = call6 (handler, Qinsert_file_contents, filename, |
3319 | visit, beg, end, replace); | |
03699b14 KR |
3320 | if (CONSP (val) && CONSP (XCDR (val))) |
3321 | inserted = XINT (XCAR (XCDR (val))); | |
32f4334d RS |
3322 | goto handled; |
3323 | } | |
3324 | ||
b1d1b865 RS |
3325 | orig_filename = filename; |
3326 | filename = ENCODE_FILE (filename); | |
3327 | ||
570d7624 JB |
3328 | fd = -1; |
3329 | ||
c1c4693e RS |
3330 | #ifdef WINDOWSNT |
3331 | { | |
3332 | Lisp_Object tem = Vw32_get_true_file_attributes; | |
3333 | ||
3334 | /* Tell stat to use expensive method to get accurate info. */ | |
3335 | Vw32_get_true_file_attributes = Qt; | |
d5db4077 | 3336 | total = stat (SDATA (filename), &st); |
c1c4693e RS |
3337 | Vw32_get_true_file_attributes = tem; |
3338 | } | |
3339 | if (total < 0) | |
3340 | #else | |
d5db4077 | 3341 | if (stat (SDATA (filename), &st) < 0) |
c1c4693e | 3342 | #endif /* WINDOWSNT */ |
570d7624 | 3343 | { |
68c45bf0 | 3344 | if (fd >= 0) emacs_close (fd); |
99bc28f4 | 3345 | badopen: |
265a9e55 | 3346 | if (NILP (visit)) |
b1d1b865 | 3347 | report_file_error ("Opening input file", Fcons (orig_filename, Qnil)); |
570d7624 JB |
3348 | st.st_mtime = -1; |
3349 | how_much = 0; | |
0de6b8f4 | 3350 | if (!NILP (Vcoding_system_for_read)) |
22d92d6b | 3351 | Fset (Qbuffer_file_coding_system, Vcoding_system_for_read); |
570d7624 JB |
3352 | goto notfound; |
3353 | } | |
3354 | ||
99bc28f4 | 3355 | #ifdef S_IFREG |
be53b411 JB |
3356 | /* This code will need to be changed in order to work on named |
3357 | pipes, and it's probably just not worth it. So we should at | |
3358 | least signal an error. */ | |
99bc28f4 | 3359 | if (!S_ISREG (st.st_mode)) |
330bfe57 | 3360 | { |
d4b8687b RS |
3361 | not_regular = 1; |
3362 | ||
3363 | if (! NILP (visit)) | |
3364 | goto notfound; | |
3365 | ||
3366 | if (! NILP (replace) || ! NILP (beg) || ! NILP (end)) | |
24b1ddad KS |
3367 | xsignal2 (Qfile_error, |
3368 | build_string ("not a regular file"), orig_filename); | |
330bfe57 | 3369 | } |
be53b411 JB |
3370 | #endif |
3371 | ||
99bc28f4 | 3372 | if (fd < 0) |
d5db4077 | 3373 | if ((fd = emacs_open (SDATA (filename), O_RDONLY, 0)) < 0) |
99bc28f4 KH |
3374 | goto badopen; |
3375 | ||
3376 | /* Replacement should preserve point as it preserves markers. */ | |
3377 | if (!NILP (replace)) | |
3378 | record_unwind_protect (restore_point_unwind, Fpoint_marker ()); | |
3379 | ||
3380 | record_unwind_protect (close_file_unwind, make_number (fd)); | |
3381 | ||
11d300db | 3382 | /* Can happen on any platform that uses long as type of off_t, but allows |
7c2fb837 | 3383 | file sizes to exceed 2Gb, so give a suitable message. */ |
d4b8687b | 3384 | if (! not_regular && st.st_size < 0) |
11d300db | 3385 | error ("Maximum buffer size exceeded"); |
be53b411 | 3386 | |
9c856db9 GM |
3387 | /* Prevent redisplay optimizations. */ |
3388 | current_buffer->clip_changed = 1; | |
3389 | ||
9f57b6b4 KH |
3390 | if (!NILP (visit)) |
3391 | { | |
3392 | if (!NILP (beg) || !NILP (end)) | |
3393 | error ("Attempt to visit less than an entire file"); | |
3394 | if (BEG < Z && NILP (replace)) | |
3395 | error ("Cannot do file visiting in a non-empty buffer"); | |
3396 | } | |
7fded690 JB |
3397 | |
3398 | if (!NILP (beg)) | |
b7826503 | 3399 | CHECK_NUMBER (beg); |
7fded690 | 3400 | else |
2acfd7ae | 3401 | XSETFASTINT (beg, 0); |
7fded690 JB |
3402 | |
3403 | if (!NILP (end)) | |
b7826503 | 3404 | CHECK_NUMBER (end); |
7fded690 JB |
3405 | else |
3406 | { | |
d4b8687b RS |
3407 | if (! not_regular) |
3408 | { | |
3409 | XSETINT (end, st.st_size); | |
68c45bf0 PE |
3410 | |
3411 | /* Arithmetic overflow can occur if an Emacs integer cannot | |
3412 | represent the file size, or if the calculations below | |
3413 | overflow. The calculations below double the file size | |
3414 | twice, so check that it can be multiplied by 4 safely. */ | |
3415 | if (XINT (end) != st.st_size | |
ab226c50 SM |
3416 | /* Actually, it should test either INT_MAX or LONG_MAX |
3417 | depending on which one is used for EMACS_INT. But in | |
3418 | any case, in practice, this test is redundant with the | |
3419 | one above. | |
3420 | || st.st_size > INT_MAX / 4 */) | |
d4b8687b | 3421 | error ("Maximum buffer size exceeded"); |
d21dd12d GM |
3422 | |
3423 | /* The file size returned from stat may be zero, but data | |
3424 | may be readable nonetheless, for example when this is a | |
3425 | file in the /proc filesystem. */ | |
3426 | if (st.st_size == 0) | |
3427 | XSETINT (end, READ_BUF_SIZE); | |
d4b8687b | 3428 | } |
7fded690 JB |
3429 | } |
3430 | ||
356a6224 | 3431 | if (EQ (Vcoding_system_for_read, Qauto_save_coding)) |
5560aecd | 3432 | { |
75421805 | 3433 | coding_system = coding_inherit_eol_type (Qutf_8_emacs, Qunix); |
5560aecd KH |
3434 | setup_coding_system (coding_system, &coding); |
3435 | /* Ensure we set Vlast_coding_system_used. */ | |
3436 | set_coding_system = 1; | |
3437 | } | |
356a6224 | 3438 | else if (BEG < Z) |
f736ffbf KH |
3439 | { |
3440 | /* Decide the coding system to use for reading the file now | |
3441 | because we can't use an optimized method for handling | |
3442 | `coding:' tag if the current buffer is not empty. */ | |
f736ffbf | 3443 | if (!NILP (Vcoding_system_for_read)) |
db327c7e | 3444 | coding_system = Vcoding_system_for_read; |
f736ffbf KH |
3445 | else |
3446 | { | |
3447 | /* Don't try looking inside a file for a coding system | |
3448 | specification if it is not seekable. */ | |
3449 | if (! not_regular && ! NILP (Vset_auto_coding_function)) | |
3450 | { | |
3451 | /* Find a coding system specified in the heading two | |
3452 | lines or in the tailing several lines of the file. | |
3453 | We assume that the 1K-byte and 3K-byte for heading | |
003a7eaa | 3454 | and tailing respectively are sufficient for this |
f736ffbf | 3455 | purpose. */ |
ae19ba7c | 3456 | EMACS_INT nread; |
f736ffbf KH |
3457 | |
3458 | if (st.st_size <= (1024 * 4)) | |
68c45bf0 | 3459 | nread = emacs_read (fd, read_buf, 1024 * 4); |
f736ffbf KH |
3460 | else |
3461 | { | |
68c45bf0 | 3462 | nread = emacs_read (fd, read_buf, 1024); |
f736ffbf KH |
3463 | if (nread >= 0) |
3464 | { | |
3465 | if (lseek (fd, st.st_size - (1024 * 3), 0) < 0) | |
3466 | report_file_error ("Setting file position", | |
3467 | Fcons (orig_filename, Qnil)); | |
68c45bf0 | 3468 | nread += emacs_read (fd, read_buf + nread, 1024 * 3); |
f736ffbf KH |
3469 | } |
3470 | } | |
feb9dc27 | 3471 | |
f736ffbf KH |
3472 | if (nread < 0) |
3473 | error ("IO error reading %s: %s", | |
d5db4077 | 3474 | SDATA (orig_filename), emacs_strerror (errno)); |
f736ffbf KH |
3475 | else if (nread > 0) |
3476 | { | |
f736ffbf | 3477 | struct buffer *prev = current_buffer; |
685fc579 RS |
3478 | Lisp_Object buffer; |
3479 | struct buffer *buf; | |
f736ffbf KH |
3480 | |
3481 | record_unwind_protect (Fset_buffer, Fcurrent_buffer ()); | |
1d92afcd | 3482 | |
685fc579 RS |
3483 | buffer = Fget_buffer_create (build_string (" *code-converting-work*")); |
3484 | buf = XBUFFER (buffer); | |
3485 | ||
29ea8ae9 | 3486 | delete_all_overlays (buf); |
685fc579 RS |
3487 | buf->directory = current_buffer->directory; |
3488 | buf->read_only = Qnil; | |
3489 | buf->filename = Qnil; | |
3490 | buf->undo_list = Qt; | |
29ea8ae9 SM |
3491 | eassert (buf->overlays_before == NULL); |
3492 | eassert (buf->overlays_after == NULL); | |
efdc16c9 | 3493 | |
685fc579 RS |
3494 | set_buffer_internal (buf); |
3495 | Ferase_buffer (); | |
3496 | buf->enable_multibyte_characters = Qnil; | |
3497 | ||
f736ffbf KH |
3498 | insert_1_both (read_buf, nread, nread, 0, 0, 0); |
3499 | TEMP_SET_PT_BOTH (BEG, BEG_BYTE); | |
db327c7e | 3500 | coding_system = call2 (Vset_auto_coding_function, |
8f924df7 | 3501 | filename, make_number (nread)); |
f736ffbf | 3502 | set_buffer_internal (prev); |
efdc16c9 | 3503 | |
f736ffbf KH |
3504 | /* Discard the unwind protect for recovering the |
3505 | current buffer. */ | |
3506 | specpdl_ptr--; | |
3507 | ||
3508 | /* Rewind the file for the actual read done later. */ | |
3509 | if (lseek (fd, 0, 0) < 0) | |
3510 | report_file_error ("Setting file position", | |
3511 | Fcons (orig_filename, Qnil)); | |
3512 | } | |
3513 | } | |
feb9dc27 | 3514 | |
db327c7e | 3515 | if (NILP (coding_system)) |
f736ffbf KH |
3516 | { |
3517 | /* If we have not yet decided a coding system, check | |
3518 | file-coding-system-alist. */ | |
8f924df7 | 3519 | Lisp_Object args[6]; |
f736ffbf KH |
3520 | |
3521 | args[0] = Qinsert_file_contents, args[1] = orig_filename; | |
3522 | args[2] = visit, args[3] = beg, args[4] = end, args[5] = replace; | |
8f924df7 KH |
3523 | coding_system = Ffind_operation_coding_system (6, args); |
3524 | if (CONSP (coding_system)) | |
3525 | coding_system = XCAR (coding_system); | |
f736ffbf KH |
3526 | } |
3527 | } | |
c9e82392 | 3528 | |
db327c7e KH |
3529 | if (NILP (coding_system)) |
3530 | coding_system = Qundecided; | |
3531 | else | |
3532 | CHECK_CODING_SYSTEM (coding_system); | |
c8a6d68a | 3533 | |
db327c7e | 3534 | if (NILP (current_buffer->enable_multibyte_characters)) |
237a6fd2 RS |
3535 | /* We must suppress all character code conversion except for |
3536 | end-of-line conversion. */ | |
db327c7e | 3537 | coding_system = raw_text_coding_system (coding_system); |
54369368 | 3538 | |
db327c7e KH |
3539 | setup_coding_system (coding_system, &coding); |
3540 | /* Ensure we set Vlast_coding_system_used. */ | |
3541 | set_coding_system = 1; | |
f736ffbf | 3542 | } |
6cf71bf1 | 3543 | |
3d0387c0 RS |
3544 | /* If requested, replace the accessible part of the buffer |
3545 | with the file contents. Avoid replacing text at the | |
3546 | beginning or end of the buffer that matches the file contents; | |
3dbcf3f6 RS |
3547 | that preserves markers pointing to the unchanged parts. |
3548 | ||
3549 | Here we implement this feature in an optimized way | |
3550 | for the case where code conversion is NOT needed. | |
3551 | The following if-statement handles the case of conversion | |
727a0b4a RS |
3552 | in a less optimal way. |
3553 | ||
3554 | If the code conversion is "automatic" then we try using this | |
3555 | method and hope for the best. | |
3556 | But if we discover the need for conversion, we give up on this method | |
3557 | and let the following if-statement handle the replace job. */ | |
3dbcf3f6 | 3558 | if (!NILP (replace) |
f736ffbf | 3559 | && BEGV < ZV |
db327c7e KH |
3560 | && (NILP (coding_system) |
3561 | || ! CODING_REQUIRE_DECODING (&coding))) | |
3d0387c0 | 3562 | { |
ec7adf26 RS |
3563 | /* same_at_start and same_at_end count bytes, |
3564 | because file access counts bytes | |
3565 | and BEG and END count bytes. */ | |
ae19ba7c SM |
3566 | EMACS_INT same_at_start = BEGV_BYTE; |
3567 | EMACS_INT same_at_end = ZV_BYTE; | |
3568 | EMACS_INT overlap; | |
6fdaa9a0 KH |
3569 | /* There is still a possibility we will find the need to do code |
3570 | conversion. If that happens, we set this variable to 1 to | |
727a0b4a | 3571 | give up on handling REPLACE in the optimized way. */ |
6fdaa9a0 | 3572 | int giveup_match_end = 0; |
9c28748f | 3573 | |
4d2a0879 RS |
3574 | if (XINT (beg) != 0) |
3575 | { | |
3576 | if (lseek (fd, XINT (beg), 0) < 0) | |
3577 | report_file_error ("Setting file position", | |
b1d1b865 | 3578 | Fcons (orig_filename, Qnil)); |
4d2a0879 RS |
3579 | } |
3580 | ||
3d0387c0 RS |
3581 | immediate_quit = 1; |
3582 | QUIT; | |
3583 | /* Count how many chars at the start of the file | |
3584 | match the text at the beginning of the buffer. */ | |
3585 | while (1) | |
3586 | { | |
ae19ba7c | 3587 | EMACS_INT nread, bufpos; |
3d0387c0 | 3588 | |
68c45bf0 | 3589 | nread = emacs_read (fd, buffer, sizeof buffer); |
3d0387c0 RS |
3590 | if (nread < 0) |
3591 | error ("IO error reading %s: %s", | |
d5db4077 | 3592 | SDATA (orig_filename), emacs_strerror (errno)); |
3d0387c0 RS |
3593 | else if (nread == 0) |
3594 | break; | |
6fdaa9a0 | 3595 | |
db327c7e | 3596 | if (CODING_REQUIRE_DETECTION (&coding)) |
727a0b4a | 3597 | { |
5b359650 | 3598 | coding_system = detect_coding_system (buffer, nread, nread, 1, 0, |
db327c7e KH |
3599 | coding_system); |
3600 | setup_coding_system (coding_system, &coding); | |
727a0b4a RS |
3601 | } |
3602 | ||
db327c7e KH |
3603 | if (CODING_REQUIRE_DECODING (&coding)) |
3604 | /* We found that the file should be decoded somehow. | |
727a0b4a RS |
3605 | Let's give up here. */ |
3606 | { | |
3607 | giveup_match_end = 1; | |
3608 | break; | |
3609 | } | |
3610 | ||
3d0387c0 | 3611 | bufpos = 0; |
ec7adf26 | 3612 | while (bufpos < nread && same_at_start < ZV_BYTE |
6fdaa9a0 | 3613 | && FETCH_BYTE (same_at_start) == buffer[bufpos]) |
3d0387c0 RS |
3614 | same_at_start++, bufpos++; |
3615 | /* If we found a discrepancy, stop the scan. | |
8e6208c5 | 3616 | Otherwise loop around and scan the next bufferful. */ |
3d0387c0 RS |
3617 | if (bufpos != nread) |
3618 | break; | |
3619 | } | |
3620 | immediate_quit = 0; | |
3621 | /* If the file matches the buffer completely, | |
3622 | there's no need to replace anything. */ | |
ec7adf26 | 3623 | if (same_at_start - BEGV_BYTE == XINT (end)) |
3d0387c0 | 3624 | { |
68c45bf0 | 3625 | emacs_close (fd); |
a1d2b64a | 3626 | specpdl_ptr--; |
1051b3b3 | 3627 | /* Truncate the buffer to the size of the file. */ |
7dae4502 | 3628 | del_range_1 (same_at_start, same_at_end, 0, 0); |
3d0387c0 RS |
3629 | goto handled; |
3630 | } | |
3631 | immediate_quit = 1; | |
3632 | QUIT; | |
3633 | /* Count how many chars at the end of the file | |
6fdaa9a0 KH |
3634 | match the text at the end of the buffer. But, if we have |
3635 | already found that decoding is necessary, don't waste time. */ | |
3636 | while (!giveup_match_end) | |
3d0387c0 | 3637 | { |
ae19ba7c | 3638 | EMACS_INT total_read, nread, bufpos, curpos, trial; |
3d0387c0 RS |
3639 | |
3640 | /* At what file position are we now scanning? */ | |
ec7adf26 | 3641 | curpos = XINT (end) - (ZV_BYTE - same_at_end); |
fc81fa9e KH |
3642 | /* If the entire file matches the buffer tail, stop the scan. */ |
3643 | if (curpos == 0) | |
3644 | break; | |
3d0387c0 RS |
3645 | /* How much can we scan in the next step? */ |
3646 | trial = min (curpos, sizeof buffer); | |
3647 | if (lseek (fd, curpos - trial, 0) < 0) | |
3648 | report_file_error ("Setting file position", | |
b1d1b865 | 3649 | Fcons (orig_filename, Qnil)); |
3d0387c0 | 3650 | |
b02439c8 | 3651 | total_read = nread = 0; |
3d0387c0 RS |
3652 | while (total_read < trial) |
3653 | { | |
68c45bf0 | 3654 | nread = emacs_read (fd, buffer + total_read, trial - total_read); |
2bd2273e | 3655 | if (nread < 0) |
3d0387c0 | 3656 | error ("IO error reading %s: %s", |
d5db4077 | 3657 | SDATA (orig_filename), emacs_strerror (errno)); |
2bd2273e GM |
3658 | else if (nread == 0) |
3659 | break; | |
3d0387c0 RS |
3660 | total_read += nread; |
3661 | } | |
efdc16c9 | 3662 | |
8e6208c5 | 3663 | /* Scan this bufferful from the end, comparing with |
3d0387c0 RS |
3664 | the Emacs buffer. */ |
3665 | bufpos = total_read; | |
efdc16c9 | 3666 | |
3d0387c0 RS |
3667 | /* Compare with same_at_start to avoid counting some buffer text |
3668 | as matching both at the file's beginning and at the end. */ | |
3669 | while (bufpos > 0 && same_at_end > same_at_start | |
6fdaa9a0 | 3670 | && FETCH_BYTE (same_at_end - 1) == buffer[bufpos - 1]) |
3d0387c0 | 3671 | same_at_end--, bufpos--; |
727a0b4a | 3672 | |
3d0387c0 | 3673 | /* If we found a discrepancy, stop the scan. |
8e6208c5 | 3674 | Otherwise loop around and scan the preceding bufferful. */ |
3d0387c0 | 3675 | if (bufpos != 0) |
727a0b4a RS |
3676 | { |
3677 | /* If this discrepancy is because of code conversion, | |
3678 | we cannot use this method; giveup and try the other. */ | |
3679 | if (same_at_end > same_at_start | |
3680 | && FETCH_BYTE (same_at_end - 1) >= 0200 | |
71312b68 | 3681 | && ! NILP (current_buffer->enable_multibyte_characters) |
c8a6d68a | 3682 | && (CODING_MAY_REQUIRE_DECODING (&coding))) |
727a0b4a RS |
3683 | giveup_match_end = 1; |
3684 | break; | |
3685 | } | |
b02439c8 GM |
3686 | |
3687 | if (nread == 0) | |
3688 | break; | |
3d0387c0 RS |
3689 | } |
3690 | immediate_quit = 0; | |
9c28748f | 3691 | |
727a0b4a RS |
3692 | if (! giveup_match_end) |
3693 | { | |
ae19ba7c | 3694 | EMACS_INT temp; |
ec7adf26 | 3695 | |
727a0b4a | 3696 | /* We win! We can handle REPLACE the optimized way. */ |
9c28748f | 3697 | |
20f6783d RS |
3698 | /* Extend the start of non-matching text area to multibyte |
3699 | character boundary. */ | |
3700 | if (! NILP (current_buffer->enable_multibyte_characters)) | |
3701 | while (same_at_start > BEGV_BYTE | |
3702 | && ! CHAR_HEAD_P (FETCH_BYTE (same_at_start))) | |
3703 | same_at_start--; | |
3704 | ||
3705 | /* Extend the end of non-matching text area to multibyte | |
71312b68 RS |
3706 | character boundary. */ |
3707 | if (! NILP (current_buffer->enable_multibyte_characters)) | |
ec7adf26 RS |
3708 | while (same_at_end < ZV_BYTE |
3709 | && ! CHAR_HEAD_P (FETCH_BYTE (same_at_end))) | |
71312b68 RS |
3710 | same_at_end++; |
3711 | ||
727a0b4a | 3712 | /* Don't try to reuse the same piece of text twice. */ |
ec7adf26 RS |
3713 | overlap = (same_at_start - BEGV_BYTE |
3714 | - (same_at_end + st.st_size - ZV)); | |
727a0b4a RS |
3715 | if (overlap > 0) |
3716 | same_at_end += overlap; | |
9c28748f | 3717 | |
727a0b4a | 3718 | /* Arrange to read only the nonmatching middle part of the file. */ |
ec7adf26 RS |
3719 | XSETFASTINT (beg, XINT (beg) + (same_at_start - BEGV_BYTE)); |
3720 | XSETFASTINT (end, XINT (end) - (ZV_BYTE - same_at_end)); | |
3dbcf3f6 | 3721 | |
ec7adf26 | 3722 | del_range_byte (same_at_start, same_at_end, 0); |
727a0b4a | 3723 | /* Insert from the file at the proper position. */ |
ec7adf26 RS |
3724 | temp = BYTE_TO_CHAR (same_at_start); |
3725 | SET_PT_BOTH (temp, same_at_start); | |
727a0b4a RS |
3726 | |
3727 | /* If display currently starts at beginning of line, | |
3728 | keep it that way. */ | |
3729 | if (XBUFFER (XWINDOW (selected_window)->buffer) == current_buffer) | |
3730 | XWINDOW (selected_window)->start_at_line_beg = Fbolp (); | |
3731 | ||
3732 | replace_handled = 1; | |
3733 | } | |
3dbcf3f6 RS |
3734 | } |
3735 | ||
3736 | /* If requested, replace the accessible part of the buffer | |
3737 | with the file contents. Avoid replacing text at the | |
3738 | beginning or end of the buffer that matches the file contents; | |
3739 | that preserves markers pointing to the unchanged parts. | |
3740 | ||
3741 | Here we implement this feature for the case where code conversion | |
3742 | is needed, in a simple way that needs a lot of memory. | |
3743 | The preceding if-statement handles the case of no conversion | |
3744 | in a more optimized way. */ | |
f736ffbf | 3745 | if (!NILP (replace) && ! replace_handled && BEGV < ZV) |
3dbcf3f6 | 3746 | { |
13818c30 SM |
3747 | EMACS_INT same_at_start = BEGV_BYTE; |
3748 | EMACS_INT same_at_end = ZV_BYTE; | |
3749 | EMACS_INT same_at_start_charpos; | |
3750 | EMACS_INT inserted_chars; | |
3751 | EMACS_INT overlap; | |
3752 | EMACS_INT bufpos; | |
db327c7e | 3753 | unsigned char *decoded; |
ae19ba7c | 3754 | EMACS_INT temp; |
8f924df7 | 3755 | int this_count = SPECPDL_INDEX (); |
59c94f03 | 3756 | int multibyte = ! NILP (current_buffer->enable_multibyte_characters); |
5b359650 | 3757 | Lisp_Object conversion_buffer; |
db327c7e | 3758 | |
5b359650 | 3759 | conversion_buffer = code_conversion_save (1, multibyte); |
3dbcf3f6 RS |
3760 | |
3761 | /* First read the whole file, performing code conversion into | |
3762 | CONVERSION_BUFFER. */ | |
3763 | ||
727a0b4a | 3764 | if (lseek (fd, XINT (beg), 0) < 0) |
8f924df7 KH |
3765 | report_file_error ("Setting file position", |
3766 | Fcons (orig_filename, Qnil)); | |
727a0b4a | 3767 | |
3dbcf3f6 RS |
3768 | total = st.st_size; /* Total bytes in the file. */ |
3769 | how_much = 0; /* Bytes read from file so far. */ | |
3770 | inserted = 0; /* Bytes put into CONVERSION_BUFFER so far. */ | |
3771 | unprocessed = 0; /* Bytes not processed in previous loop. */ | |
3772 | ||
2ba48777 | 3773 | GCPRO1 (conversion_buffer); |
3dbcf3f6 RS |
3774 | while (how_much < total) |
3775 | { | |
db327c7e KH |
3776 | /* We read one bunch by one (READ_BUF_SIZE bytes) to allow |
3777 | quitting while reading a huge while. */ | |
3dbcf3f6 | 3778 | /* try is reserved in some compilers (Microsoft C) */ |
ae19ba7c SM |
3779 | EMACS_INT trytry = min (total - how_much, |
3780 | READ_BUF_SIZE - unprocessed); | |
3781 | EMACS_INT this; | |
3dbcf3f6 RS |
3782 | |
3783 | /* Allow quitting out of the actual I/O. */ | |
3784 | immediate_quit = 1; | |
3785 | QUIT; | |
db327c7e | 3786 | this = emacs_read (fd, read_buf + unprocessed, trytry); |
3dbcf3f6 RS |
3787 | immediate_quit = 0; |
3788 | ||
db327c7e | 3789 | if (this <= 0) |
3dbcf3f6 | 3790 | { |
db327c7e KH |
3791 | if (this < 0) |
3792 | how_much = this; | |
3dbcf3f6 RS |
3793 | break; |
3794 | } | |
3795 | ||
3796 | how_much += this; | |
3797 | ||
bf1c0f27 SM |
3798 | BUF_TEMP_SET_PT (XBUFFER (conversion_buffer), |
3799 | BUF_Z (XBUFFER (conversion_buffer))); | |
db327c7e KH |
3800 | decode_coding_c_string (&coding, read_buf, unprocessed + this, |
3801 | conversion_buffer); | |
3802 | unprocessed = coding.carryover_bytes; | |
3803 | if (coding.carryover_bytes > 0) | |
72af86bd | 3804 | memcpy (read_buf, coding.carryover, unprocessed); |
3dbcf3f6 | 3805 | } |
2ba48777 | 3806 | UNGCPRO; |
db327c7e | 3807 | emacs_close (fd); |
3dbcf3f6 | 3808 | |
db65a627 CY |
3809 | /* We should remove the unwind_protect calling |
3810 | close_file_unwind, but other stuff has been added the stack, | |
3811 | so defer the removal till we reach the `handled' label. */ | |
3812 | deferred_remove_unwind_protect = 1; | |
3813 | ||
db327c7e KH |
3814 | /* At this point, HOW_MUCH should equal TOTAL, or should be <= 0 |
3815 | if we couldn't read the file. */ | |
3dbcf3f6 RS |
3816 | |
3817 | if (how_much < 0) | |
4ed925c6 MB |
3818 | error ("IO error reading %s: %s", |
3819 | SDATA (orig_filename), emacs_strerror (errno)); | |
3dbcf3f6 | 3820 | |
db327c7e KH |
3821 | if (unprocessed > 0) |
3822 | { | |
3823 | coding.mode |= CODING_MODE_LAST_BLOCK; | |
3824 | decode_coding_c_string (&coding, read_buf, unprocessed, | |
3825 | conversion_buffer); | |
3826 | coding.mode &= ~CODING_MODE_LAST_BLOCK; | |
3827 | } | |
3828 | ||
50b06221 | 3829 | coding_system = CODING_ID_NAME (coding.id); |
f6a07420 | 3830 | set_coding_system = 1; |
db327c7e | 3831 | decoded = BUF_BEG_ADDR (XBUFFER (conversion_buffer)); |
50342b35 KH |
3832 | inserted = (BUF_Z_BYTE (XBUFFER (conversion_buffer)) |
3833 | - BUF_BEG_BYTE (XBUFFER (conversion_buffer))); | |
db327c7e KH |
3834 | |
3835 | /* Compare the beginning of the converted string with the buffer | |
3836 | text. */ | |
3dbcf3f6 RS |
3837 | |
3838 | bufpos = 0; | |
3839 | while (bufpos < inserted && same_at_start < same_at_end | |
db327c7e | 3840 | && FETCH_BYTE (same_at_start) == decoded[bufpos]) |
3dbcf3f6 RS |
3841 | same_at_start++, bufpos++; |
3842 | ||
db327c7e | 3843 | /* If the file matches the head of buffer completely, |
3dbcf3f6 RS |
3844 | there's no need to replace anything. */ |
3845 | ||
3846 | if (bufpos == inserted) | |
3847 | { | |
3dbcf3f6 | 3848 | /* Truncate the buffer to the size of the file. */ |
18a9f8d9 SM |
3849 | if (same_at_start == same_at_end) |
3850 | nochange = 1; | |
3851 | else | |
3852 | del_range_byte (same_at_start, same_at_end, 0); | |
427f5aab | 3853 | inserted = 0; |
e8553dd1 KH |
3854 | |
3855 | unbind_to (this_count, Qnil); | |
3dbcf3f6 RS |
3856 | goto handled; |
3857 | } | |
3858 | ||
db327c7e KH |
3859 | /* Extend the start of non-matching text area to the previous |
3860 | multibyte character boundary. */ | |
20f6783d RS |
3861 | if (! NILP (current_buffer->enable_multibyte_characters)) |
3862 | while (same_at_start > BEGV_BYTE | |
3863 | && ! CHAR_HEAD_P (FETCH_BYTE (same_at_start))) | |
3864 | same_at_start--; | |
3865 | ||
3dbcf3f6 RS |
3866 | /* Scan this bufferful from the end, comparing with |
3867 | the Emacs buffer. */ | |
3868 | bufpos = inserted; | |
3869 | ||
3870 | /* Compare with same_at_start to avoid counting some buffer text | |
3871 | as matching both at the file's beginning and at the end. */ | |
3872 | while (bufpos > 0 && same_at_end > same_at_start | |
db327c7e | 3873 | && FETCH_BYTE (same_at_end - 1) == decoded[bufpos - 1]) |
3dbcf3f6 RS |
3874 | same_at_end--, bufpos--; |
3875 | ||
db327c7e KH |
3876 | /* Extend the end of non-matching text area to the next |
3877 | multibyte character boundary. */ | |
20f6783d RS |
3878 | if (! NILP (current_buffer->enable_multibyte_characters)) |
3879 | while (same_at_end < ZV_BYTE | |
3880 | && ! CHAR_HEAD_P (FETCH_BYTE (same_at_end))) | |
3881 | same_at_end++; | |
3882 | ||
3dbcf3f6 | 3883 | /* Don't try to reuse the same piece of text twice. */ |
ec7adf26 | 3884 | overlap = same_at_start - BEGV_BYTE - (same_at_end + inserted - ZV_BYTE); |
3dbcf3f6 RS |
3885 | if (overlap > 0) |
3886 | same_at_end += overlap; | |
3887 | ||
727a0b4a RS |
3888 | /* If display currently starts at beginning of line, |
3889 | keep it that way. */ | |
3890 | if (XBUFFER (XWINDOW (selected_window)->buffer) == current_buffer) | |
3891 | XWINDOW (selected_window)->start_at_line_beg = Fbolp (); | |
3892 | ||
3dbcf3f6 RS |
3893 | /* Replace the chars that we need to replace, |
3894 | and update INSERTED to equal the number of bytes | |
db327c7e | 3895 | we are taking from the decoded string. */ |
4b70e2c9 | 3896 | inserted -= (ZV_BYTE - same_at_end) + (same_at_start - BEGV_BYTE); |
427f5aab | 3897 | |
643c73b9 | 3898 | if (same_at_end != same_at_start) |
427f5aab KH |
3899 | { |
3900 | del_range_byte (same_at_start, same_at_end, 0); | |
3901 | temp = GPT; | |
3902 | same_at_start = GPT_BYTE; | |
3903 | } | |
643c73b9 RS |
3904 | else |
3905 | { | |
643c73b9 | 3906 | temp = BYTE_TO_CHAR (same_at_start); |
643c73b9 | 3907 | } |
427f5aab KH |
3908 | /* Insert from the file at the proper position. */ |
3909 | SET_PT_BOTH (temp, same_at_start); | |
50342b35 KH |
3910 | same_at_start_charpos |
3911 | = buf_bytepos_to_charpos (XBUFFER (conversion_buffer), | |
7f5d2c72 SM |
3912 | same_at_start - BEGV_BYTE |
3913 | + BUF_BEG_BYTE (XBUFFER (conversion_buffer))); | |
50342b35 KH |
3914 | inserted_chars |
3915 | = (buf_bytepos_to_charpos (XBUFFER (conversion_buffer), | |
7f5d2c72 SM |
3916 | same_at_start + inserted - BEGV_BYTE |
3917 | + BUF_BEG_BYTE (XBUFFER (conversion_buffer))) | |
50342b35 | 3918 | - same_at_start_charpos); |
d07af40d KH |
3919 | /* This binding is to avoid ask-user-about-supersession-threat |
3920 | being called in insert_from_buffer (via in | |
3921 | prepare_to_modify_buffer). */ | |
3922 | specbind (intern ("buffer-file-name"), Qnil); | |
db327c7e | 3923 | insert_from_buffer (XBUFFER (conversion_buffer), |
50342b35 | 3924 | same_at_start_charpos, inserted_chars, 0); |
427f5aab KH |
3925 | /* Set `inserted' to the number of inserted characters. */ |
3926 | inserted = PT - temp; | |
77343e1d KH |
3927 | /* Set point before the inserted characters. */ |
3928 | SET_PT_BOTH (temp, same_at_start); | |
3dbcf3f6 | 3929 | |
db327c7e | 3930 | unbind_to (this_count, Qnil); |
3dbcf3f6 | 3931 | |
3dbcf3f6 | 3932 | goto handled; |
3d0387c0 RS |
3933 | } |
3934 | ||
d4b8687b RS |
3935 | if (! not_regular) |
3936 | { | |
3937 | register Lisp_Object temp; | |
7fded690 | 3938 | |
d4b8687b | 3939 | total = XINT (end) - XINT (beg); |
570d7624 | 3940 | |
d4b8687b RS |
3941 | /* Make sure point-max won't overflow after this insertion. */ |
3942 | XSETINT (temp, total); | |
3943 | if (total != XINT (temp)) | |
3944 | error ("Maximum buffer size exceeded"); | |
3945 | } | |
3946 | else | |
3947 | /* For a special file, all we can do is guess. */ | |
3948 | total = READ_BUF_SIZE; | |
570d7624 | 3949 | |
68780e2a RS |
3950 | if (NILP (visit) && inserted > 0) |
3951 | { | |
3952 | #ifdef CLASH_DETECTION | |
3953 | if (!NILP (current_buffer->file_truename) | |
3954 | /* Make binding buffer-file-name to nil effective. */ | |
3955 | && !NILP (current_buffer->filename) | |
3956 | && SAVE_MODIFF >= MODIFF) | |
3957 | we_locked_file = 1; | |
3958 | #endif /* CLASH_DETECTION */ | |
3959 | prepare_to_modify_buffer (GPT, GPT, NULL); | |
3960 | } | |
570d7624 | 3961 | |
7fe52289 | 3962 | move_gap (PT); |
7fded690 JB |
3963 | if (GAP_SIZE < total) |
3964 | make_gap (total - GAP_SIZE); | |
3965 | ||
a1d2b64a | 3966 | if (XINT (beg) != 0 || !NILP (replace)) |
7fded690 JB |
3967 | { |
3968 | if (lseek (fd, XINT (beg), 0) < 0) | |
b1d1b865 RS |
3969 | report_file_error ("Setting file position", |
3970 | Fcons (orig_filename, Qnil)); | |
7fded690 JB |
3971 | } |
3972 | ||
6fdaa9a0 | 3973 | /* In the following loop, HOW_MUCH contains the total bytes read so |
c8a6d68a KH |
3974 | far for a regular file, and not changed for a special file. But, |
3975 | before exiting the loop, it is set to a negative value if I/O | |
3976 | error occurs. */ | |
a1d2b64a | 3977 | how_much = 0; |
efdc16c9 | 3978 | |
6fdaa9a0 KH |
3979 | /* Total bytes inserted. */ |
3980 | inserted = 0; | |
efdc16c9 | 3981 | |
c8a6d68a | 3982 | /* Here, we don't do code conversion in the loop. It is done by |
db327c7e | 3983 | decode_coding_gap after all data are read into the buffer. */ |
1b978129 | 3984 | { |
ae19ba7c | 3985 | EMACS_INT gap_size = GAP_SIZE; |
efdc16c9 | 3986 | |
1b978129 GM |
3987 | while (how_much < total) |
3988 | { | |
5e570b75 | 3989 | /* try is reserved in some compilers (Microsoft C) */ |
ae19ba7c SM |
3990 | EMACS_INT trytry = min (total - how_much, READ_BUF_SIZE); |
3991 | EMACS_INT this; | |
570d7624 | 3992 | |
1b978129 GM |
3993 | if (not_regular) |
3994 | { | |
3995 | Lisp_Object val; | |
570d7624 | 3996 | |
1b978129 GM |
3997 | /* Maybe make more room. */ |
3998 | if (gap_size < trytry) | |
3999 | { | |
4000 | make_gap (total - gap_size); | |
4001 | gap_size = GAP_SIZE; | |
4002 | } | |
4003 | ||
4004 | /* Read from the file, capturing `quit'. When an | |
4005 | error occurs, end the loop, and arrange for a quit | |
4006 | to be signaled after decoding the text we read. */ | |
4007 | non_regular_fd = fd; | |
4008 | non_regular_inserted = inserted; | |
4009 | non_regular_nbytes = trytry; | |
4010 | val = internal_condition_case_1 (read_non_regular, Qnil, Qerror, | |
4011 | read_non_regular_quit); | |
4012 | if (NILP (val)) | |
4013 | { | |
4014 | read_quit = 1; | |
4015 | break; | |
4016 | } | |
4017 | ||
4018 | this = XINT (val); | |
4019 | } | |
4020 | else | |
4021 | { | |
4022 | /* Allow quitting out of the actual I/O. We don't make text | |
4023 | part of the buffer until all the reading is done, so a C-g | |
4024 | here doesn't do any harm. */ | |
4025 | immediate_quit = 1; | |
4026 | QUIT; | |
28c3eb5a | 4027 | this = emacs_read (fd, BEG_ADDR + PT_BYTE - BEG_BYTE + inserted, trytry); |
1b978129 GM |
4028 | immediate_quit = 0; |
4029 | } | |
efdc16c9 | 4030 | |
1b978129 GM |
4031 | if (this <= 0) |
4032 | { | |
4033 | how_much = this; | |
4034 | break; | |
4035 | } | |
4036 | ||
4037 | gap_size -= this; | |
4038 | ||
4039 | /* For a regular file, where TOTAL is the real size, | |
4040 | count HOW_MUCH to compare with it. | |
4041 | For a special file, where TOTAL is just a buffer size, | |
4042 | so don't bother counting in HOW_MUCH. | |
4043 | (INSERTED is where we count the number of characters inserted.) */ | |
4044 | if (! not_regular) | |
4045 | how_much += this; | |
4046 | inserted += this; | |
4047 | } | |
4048 | } | |
4049 | ||
68780e2a RS |
4050 | /* Now we have read all the file data into the gap. |
4051 | If it was empty, undo marking the buffer modified. */ | |
4052 | ||
4053 | if (inserted == 0) | |
4054 | { | |
6840d350 | 4055 | #ifdef CLASH_DETECTION |
68780e2a RS |
4056 | if (we_locked_file) |
4057 | unlock_file (current_buffer->file_truename); | |
6840d350 | 4058 | #endif |
68780e2a RS |
4059 | Vdeactivate_mark = old_Vdeactivate_mark; |
4060 | } | |
83c1cf6d RS |
4061 | else |
4062 | Vdeactivate_mark = Qt; | |
68780e2a | 4063 | |
1b978129 GM |
4064 | /* Make the text read part of the buffer. */ |
4065 | GAP_SIZE -= inserted; | |
4066 | GPT += inserted; | |
4067 | GPT_BYTE += inserted; | |
4068 | ZV += inserted; | |
4069 | ZV_BYTE += inserted; | |
4070 | Z += inserted; | |
4071 | Z_BYTE += inserted; | |
6fdaa9a0 | 4072 | |
c8a6d68a KH |
4073 | if (GAP_SIZE > 0) |
4074 | /* Put an anchor to ensure multi-byte form ends at gap. */ | |
4075 | *GPT_ADDR = 0; | |
d4b8687b | 4076 | |
68c45bf0 | 4077 | emacs_close (fd); |
6fdaa9a0 | 4078 | |
c8a6d68a KH |
4079 | /* Discard the unwind protect for closing the file. */ |
4080 | specpdl_ptr--; | |
6fdaa9a0 | 4081 | |
c8a6d68a KH |
4082 | if (how_much < 0) |
4083 | error ("IO error reading %s: %s", | |
d5db4077 | 4084 | SDATA (orig_filename), emacs_strerror (errno)); |
ec7adf26 | 4085 | |
f8569325 DL |
4086 | notfound: |
4087 | ||
db327c7e | 4088 | if (NILP (coding_system)) |
c8a6d68a | 4089 | { |
2df42e09 | 4090 | /* The coding system is not yet decided. Decide it by an |
dfe35e7b RS |
4091 | optimized method for handling `coding:' tag. |
4092 | ||
4093 | Note that we can get here only if the buffer was empty | |
4094 | before the insertion. */ | |
f736ffbf | 4095 | |
2df42e09 | 4096 | if (!NILP (Vcoding_system_for_read)) |
db327c7e | 4097 | coding_system = Vcoding_system_for_read; |
2df42e09 KH |
4098 | else |
4099 | { | |
98a7d268 KH |
4100 | /* Since we are sure that the current buffer was empty |
4101 | before the insertion, we can toggle | |
4102 | enable-multibyte-characters directly here without taking | |
9a7f80aa KH |
4103 | care of marker adjustment. By this way, we can run Lisp |
4104 | program safely before decoding the inserted text. */ | |
98a7d268 | 4105 | Lisp_Object unwind_data; |
9a7f80aa | 4106 | int count = SPECPDL_INDEX (); |
2df42e09 | 4107 | |
98a7d268 KH |
4108 | unwind_data = Fcons (current_buffer->enable_multibyte_characters, |
4109 | Fcons (current_buffer->undo_list, | |
4110 | Fcurrent_buffer ())); | |
2b89769e | 4111 | current_buffer->enable_multibyte_characters = Qnil; |
98a7d268 KH |
4112 | current_buffer->undo_list = Qt; |
4113 | record_unwind_protect (decide_coding_unwind, unwind_data); | |
4114 | ||
4115 | if (inserted > 0 && ! NILP (Vset_auto_coding_function)) | |
4116 | { | |
db327c7e | 4117 | coding_system = call2 (Vset_auto_coding_function, |
8f924df7 | 4118 | filename, make_number (inserted)); |
2df42e09 | 4119 | } |
f736ffbf | 4120 | |
db327c7e | 4121 | if (NILP (coding_system)) |
2df42e09 KH |
4122 | { |
4123 | /* If the coding system is not yet decided, check | |
4124 | file-coding-system-alist. */ | |
8f924df7 | 4125 | Lisp_Object args[6]; |
f736ffbf | 4126 | |
2df42e09 KH |
4127 | args[0] = Qinsert_file_contents, args[1] = orig_filename; |
4128 | args[2] = visit, args[3] = beg, args[4] = end, args[5] = Qnil; | |
8f924df7 KH |
4129 | coding_system = Ffind_operation_coding_system (6, args); |
4130 | if (CONSP (coding_system)) | |
4131 | coding_system = XCAR (coding_system); | |
f736ffbf | 4132 | } |
98a7d268 KH |
4133 | unbind_to (count, Qnil); |
4134 | inserted = Z_BYTE - BEG_BYTE; | |
2df42e09 | 4135 | } |
f736ffbf | 4136 | |
db327c7e KH |
4137 | if (NILP (coding_system)) |
4138 | coding_system = Qundecided; | |
4139 | else | |
4140 | CHECK_CODING_SYSTEM (coding_system); | |
f736ffbf | 4141 | |
db327c7e | 4142 | if (NILP (current_buffer->enable_multibyte_characters)) |
237a6fd2 | 4143 | /* We must suppress all character code conversion except for |
2df42e09 | 4144 | end-of-line conversion. */ |
db327c7e | 4145 | coding_system = raw_text_coding_system (coding_system); |
db327c7e KH |
4146 | setup_coding_system (coding_system, &coding); |
4147 | /* Ensure we set Vlast_coding_system_used. */ | |
4148 | set_coding_system = 1; | |
2df42e09 | 4149 | } |
f736ffbf | 4150 | |
db327c7e | 4151 | if (!NILP (visit)) |
8c3b9441 | 4152 | { |
db327c7e | 4153 | /* When we visit a file by raw-text, we change the buffer to |
9a7f80aa | 4154 | unibyte. */ |
db327c7e KH |
4155 | if (CODING_FOR_UNIBYTE (&coding) |
4156 | /* Can't do this if part of the buffer might be preserved. */ | |
4157 | && NILP (replace)) | |
4158 | /* Visiting a file with these coding system makes the buffer | |
4159 | unibyte. */ | |
4160 | current_buffer->enable_multibyte_characters = Qnil; | |
8c3b9441 KH |
4161 | } |
4162 | ||
8f924df7 | 4163 | coding.dst_multibyte = ! NILP (current_buffer->enable_multibyte_characters); |
5b359650 | 4164 | if (CODING_MAY_REQUIRE_DECODING (&coding) |
1c157f8d | 4165 | && (inserted > 0 || CODING_REQUIRE_FLUSHING (&coding))) |
2df42e09 | 4166 | { |
db327c7e KH |
4167 | move_gap_both (PT, PT_BYTE); |
4168 | GAP_SIZE += inserted; | |
4169 | ZV_BYTE -= inserted; | |
4170 | Z_BYTE -= inserted; | |
4171 | ZV -= inserted; | |
4172 | Z -= inserted; | |
4173 | decode_coding_gap (&coding, inserted, inserted); | |
4174 | inserted = coding.produced_char; | |
5b359650 | 4175 | coding_system = CODING_ID_NAME (coding.id); |
2df42e09 | 4176 | } |
db327c7e KH |
4177 | else if (inserted > 0) |
4178 | adjust_after_insert (PT, PT_BYTE, PT + inserted, PT_BYTE + inserted, | |
4179 | inserted); | |
570d7624 | 4180 | |
cf6d2357 RS |
4181 | /* Now INSERTED is measured in characters. */ |
4182 | ||
04e6f79c | 4183 | #ifdef DOS_NT |
2df42e09 KH |
4184 | /* Use the conversion type to determine buffer-file-type |
4185 | (find-buffer-file-type is now used to help determine the | |
4186 | conversion). */ | |
652a7e95 | 4187 | if ((VECTORP (CODING_ID_EOL_TYPE (coding.id)) |
f7ce9c0c | 4188 | || EQ (CODING_ID_EOL_TYPE (coding.id), Qunix)) |
2df42e09 KH |
4189 | && ! CODING_REQUIRE_DECODING (&coding)) |
4190 | current_buffer->buffer_file_type = Qt; | |
4191 | else | |
4192 | current_buffer->buffer_file_type = Qnil; | |
04e6f79c | 4193 | #endif |
570d7624 | 4194 | |
32f4334d | 4195 | handled: |
570d7624 | 4196 | |
db65a627 CY |
4197 | if (deferred_remove_unwind_protect) |
4198 | /* If requested above, discard the unwind protect for closing the | |
4199 | file. */ | |
4200 | specpdl_ptr--; | |
4201 | ||
265a9e55 | 4202 | if (!NILP (visit)) |
570d7624 | 4203 | { |
18a9f8d9 | 4204 | if (!EQ (current_buffer->undo_list, Qt) && !nochange) |
cfadd376 | 4205 | current_buffer->undo_list = Qnil; |
62bcf009 | 4206 | |
a7e82472 RS |
4207 | if (NILP (handler)) |
4208 | { | |
4209 | current_buffer->modtime = st.st_mtime; | |
58b963f7 | 4210 | current_buffer->modtime_size = st.st_size; |
b1d1b865 | 4211 | current_buffer->filename = orig_filename; |
a7e82472 | 4212 | } |
62bcf009 | 4213 | |
95385625 | 4214 | SAVE_MODIFF = MODIFF; |
0b5397c2 | 4215 | BUF_AUTOSAVE_MODIFF (current_buffer) = MODIFF; |
2acfd7ae | 4216 | XSETFASTINT (current_buffer->save_length, Z - BEG); |
570d7624 | 4217 | #ifdef CLASH_DETECTION |
32f4334d RS |
4218 | if (NILP (handler)) |
4219 | { | |
f471f4c2 RS |
4220 | if (!NILP (current_buffer->file_truename)) |
4221 | unlock_file (current_buffer->file_truename); | |
32f4334d RS |
4222 | unlock_file (filename); |
4223 | } | |
570d7624 | 4224 | #endif /* CLASH_DETECTION */ |
330bfe57 | 4225 | if (not_regular) |
24b1ddad KS |
4226 | xsignal2 (Qfile_error, |
4227 | build_string ("not a regular file"), orig_filename); | |
570d7624 JB |
4228 | } |
4229 | ||
b6426b03 | 4230 | if (set_coding_system) |
8f924df7 | 4231 | Vlast_coding_system_used = coding_system; |
b6426b03 | 4232 | |
2080470e | 4233 | if (! NILP (Ffboundp (Qafter_insert_file_set_coding))) |
b6426b03 | 4234 | { |
37a3c774 KH |
4235 | insval = call2 (Qafter_insert_file_set_coding, make_number (inserted), |
4236 | visit); | |
b6426b03 KH |
4237 | if (! NILP (insval)) |
4238 | { | |
4239 | CHECK_NUMBER (insval); | |
4240 | inserted = XFASTINT (insval); | |
4241 | } | |
4242 | } | |
4243 | ||
6420e80c | 4244 | /* Decode file format. */ |
c8a6d68a | 4245 | if (inserted > 0) |
0d420e88 | 4246 | { |
6420e80c | 4247 | /* Don't run point motion or modification hooks when decoding. */ |
6f2528d8 | 4248 | int count = SPECPDL_INDEX (); |
ae19ba7c | 4249 | EMACS_INT old_inserted = inserted; |
6f2528d8 MR |
4250 | specbind (Qinhibit_point_motion_hooks, Qt); |
4251 | specbind (Qinhibit_modification_hooks, Qt); | |
4252 | ||
6420e80c | 4253 | /* Save old undo list and don't record undo for decoding. */ |
6f2528d8 MR |
4254 | old_undo = current_buffer->undo_list; |
4255 | current_buffer->undo_list = Qt; | |
efdc16c9 | 4256 | |
6f2528d8 | 4257 | if (NILP (replace)) |
ed8e506f | 4258 | { |
6f2528d8 MR |
4259 | insval = call3 (Qformat_decode, |
4260 | Qnil, make_number (inserted), visit); | |
4261 | CHECK_NUMBER (insval); | |
4262 | inserted = XFASTINT (insval); | |
4263 | } | |
4264 | else | |
4265 | { | |
4266 | /* If REPLACE is non-nil and we succeeded in not replacing the | |
6420e80c AS |
4267 | beginning or end of the buffer text with the file's contents, |
4268 | call format-decode with `point' positioned at the beginning | |
4269 | of the buffer and `inserted' equalling the number of | |
4270 | characters in the buffer. Otherwise, format-decode might | |
4271 | fail to correctly analyze the beginning or end of the buffer. | |
4272 | Hence we temporarily save `point' and `inserted' here and | |
4273 | restore `point' iff format-decode did not insert or delete | |
4274 | any text. Otherwise we leave `point' at point-min. */ | |
ae19ba7c SM |
4275 | EMACS_INT opoint = PT; |
4276 | EMACS_INT opoint_byte = PT_BYTE; | |
4277 | EMACS_INT oinserted = ZV - BEGV; | |
cac4219c | 4278 | int ochars_modiff = CHARS_MODIFF; |
1f163f28 MA |
4279 | |
4280 | TEMP_SET_PT_BOTH (BEGV, BEGV_BYTE); | |
6f2528d8 MR |
4281 | insval = call3 (Qformat_decode, |
4282 | Qnil, make_number (oinserted), visit); | |
4283 | CHECK_NUMBER (insval); | |
cac4219c MR |
4284 | if (ochars_modiff == CHARS_MODIFF) |
4285 | /* format_decode didn't modify buffer's characters => move | |
4286 | point back to position before inserted text and leave | |
6420e80c | 4287 | value of inserted alone. */ |
6f2528d8 | 4288 | SET_PT_BOTH (opoint, opoint_byte); |
cac4219c MR |
4289 | else |
4290 | /* format_decode modified buffer's characters => consider | |
6420e80c | 4291 | entire buffer changed and leave point at point-min. */ |
cac4219c | 4292 | inserted = XFASTINT (insval); |
ed8e506f | 4293 | } |
efdc16c9 | 4294 | |
6f2528d8 | 4295 | /* For consistency with format-decode call these now iff inserted > 0 |
6420e80c | 4296 | (martin 2007-06-28). */ |
6f2528d8 MR |
4297 | p = Vafter_insert_file_functions; |
4298 | while (CONSP (p)) | |
4299 | { | |
4300 | if (NILP (replace)) | |
4301 | { | |
4302 | insval = call1 (XCAR (p), make_number (inserted)); | |
4303 | if (!NILP (insval)) | |
4304 | { | |
4305 | CHECK_NUMBER (insval); | |
4306 | inserted = XFASTINT (insval); | |
4307 | } | |
4308 | } | |
4309 | else | |
4310 | { | |
6420e80c AS |
4311 | /* For the rationale of this see the comment on |
4312 | format-decode above. */ | |
ae19ba7c SM |
4313 | EMACS_INT opoint = PT; |
4314 | EMACS_INT opoint_byte = PT_BYTE; | |
4315 | EMACS_INT oinserted = ZV - BEGV; | |
cac4219c | 4316 | int ochars_modiff = CHARS_MODIFF; |
1f163f28 | 4317 | |
6f2528d8 MR |
4318 | TEMP_SET_PT_BOTH (BEGV, BEGV_BYTE); |
4319 | insval = call1 (XCAR (p), make_number (oinserted)); | |
4320 | if (!NILP (insval)) | |
4321 | { | |
4322 | CHECK_NUMBER (insval); | |
cac4219c MR |
4323 | if (ochars_modiff == CHARS_MODIFF) |
4324 | /* after_insert_file_functions didn't modify | |
4325 | buffer's characters => move point back to | |
4326 | position before inserted text and leave value of | |
6420e80c | 4327 | inserted alone. */ |
6f2528d8 | 4328 | SET_PT_BOTH (opoint, opoint_byte); |
cac4219c MR |
4329 | else |
4330 | /* after_insert_file_functions did modify buffer's | |
4331 | characters => consider entire buffer changed and | |
6420e80c | 4332 | leave point at point-min. */ |
cac4219c | 4333 | inserted = XFASTINT (insval); |
6f2528d8 MR |
4334 | } |
4335 | } | |
4336 | ||
4337 | QUIT; | |
4338 | p = XCDR (p); | |
ed8e506f | 4339 | } |
efdc16c9 | 4340 | |
6f2528d8 MR |
4341 | if (NILP (visit)) |
4342 | { | |
6420e80c AS |
4343 | current_buffer->undo_list = old_undo; |
4344 | if (CONSP (old_undo) && inserted != old_inserted) | |
6f2528d8 | 4345 | { |
6420e80c AS |
4346 | /* Adjust the last undo record for the size change during |
4347 | the format conversion. */ | |
6f2528d8 | 4348 | Lisp_Object tem = XCAR (old_undo); |
6420e80c AS |
4349 | if (CONSP (tem) && INTEGERP (XCAR (tem)) |
4350 | && INTEGERP (XCDR (tem)) | |
4351 | && XFASTINT (XCDR (tem)) == PT + old_inserted) | |
4352 | XSETCDR (tem, make_number (PT + inserted)); | |
6f2528d8 MR |
4353 | } |
4354 | } | |
6f2528d8 | 4355 | else |
1bc99c9c | 4356 | /* If undo_list was Qt before, keep it that way. |
6420e80c | 4357 | Otherwise start with an empty undo_list. */ |
1bc99c9c | 4358 | current_buffer->undo_list = EQ (old_undo, Qt) ? Qt : Qnil; |
efdc16c9 | 4359 | |
6f2528d8 | 4360 | unbind_to (count, Qnil); |
0d420e88 BG |
4361 | } |
4362 | ||
0342d8c5 RS |
4363 | /* Call after-change hooks for the inserted text, aside from the case |
4364 | of normal visiting (not with REPLACE), which is done in a new buffer | |
4365 | "before" the buffer is changed. */ | |
c8a6d68a | 4366 | if (inserted > 0 && total > 0 |
0342d8c5 | 4367 | && (NILP (visit) || !NILP (replace))) |
ce51c54c KH |
4368 | { |
4369 | signal_after_change (PT, 0, inserted); | |
4370 | update_compositions (PT, PT, CHECK_BORDER); | |
4371 | } | |
b56567b5 | 4372 | |
f8569325 DL |
4373 | if (!NILP (visit) |
4374 | && current_buffer->modtime == -1) | |
4375 | { | |
4376 | /* If visiting nonexistent file, return nil. */ | |
4377 | report_file_error ("Opening input file", Fcons (orig_filename, Qnil)); | |
d6a3cc15 RS |
4378 | } |
4379 | ||
1b978129 GM |
4380 | if (read_quit) |
4381 | Fsignal (Qquit, Qnil); | |
4382 | ||
ec7adf26 | 4383 | /* ??? Retval needs to be dealt with in all cases consistently. */ |
a1d2b64a | 4384 | if (NILP (val)) |
b1d1b865 | 4385 | val = Fcons (orig_filename, |
a1d2b64a RS |
4386 | Fcons (make_number (inserted), |
4387 | Qnil)); | |
4388 | ||
4389 | RETURN_UNGCPRO (unbind_to (count, val)); | |
570d7624 | 4390 | } |
7fded690 | 4391 | \f |
f57e2426 | 4392 | static Lisp_Object build_annotations (Lisp_Object, Lisp_Object); |
d6a3cc15 | 4393 | |
199607e4 | 4394 | static Lisp_Object |
971de7fb | 4395 | build_annotations_unwind (Lisp_Object arg) |
6fc6f94b | 4396 | { |
67fbc0cb | 4397 | Vwrite_region_annotation_buffers = arg; |
6fc6f94b RS |
4398 | return Qnil; |
4399 | } | |
4400 | ||
7c82a4a9 SM |
4401 | /* Decide the coding-system to encode the data with. */ |
4402 | ||
c934586d | 4403 | static Lisp_Object |
dd4c5104 DN |
4404 | choose_write_coding_system (Lisp_Object start, Lisp_Object end, Lisp_Object filename, |
4405 | Lisp_Object append, Lisp_Object visit, Lisp_Object lockname, | |
4406 | struct coding_system *coding) | |
7c82a4a9 SM |
4407 | { |
4408 | Lisp_Object val; | |
75421805 | 4409 | Lisp_Object eol_parent = Qnil; |
7c82a4a9 | 4410 | |
6b61353c KH |
4411 | if (auto_saving |
4412 | && NILP (Fstring_equal (current_buffer->filename, | |
4413 | current_buffer->auto_save_file_name))) | |
75421805 KH |
4414 | { |
4415 | val = Qutf_8_emacs; | |
4416 | eol_parent = Qunix; | |
4417 | } | |
7c82a4a9 | 4418 | else if (!NILP (Vcoding_system_for_write)) |
42b01e1e KH |
4419 | { |
4420 | val = Vcoding_system_for_write; | |
4421 | if (coding_system_require_warning | |
4422 | && !NILP (Ffboundp (Vselect_safe_coding_system_function))) | |
4423 | /* Confirm that VAL can surely encode the current region. */ | |
4424 | val = call5 (Vselect_safe_coding_system_function, | |
4425 | start, end, Fcons (Qt, Fcons (val, Qnil)), | |
4426 | Qnil, filename); | |
4427 | } | |
7c82a4a9 SM |
4428 | else |
4429 | { | |
4430 | /* If the variable `buffer-file-coding-system' is set locally, | |
4431 | it means that the file was read with some kind of code | |
4432 | conversion or the variable is explicitly set by users. We | |
4433 | had better write it out with the same coding system even if | |
4434 | `enable-multibyte-characters' is nil. | |
4435 | ||
4436 | If it is not set locally, we anyway have to convert EOL | |
4437 | format if the default value of `buffer-file-coding-system' | |
4438 | tells that it is not Unix-like (LF only) format. */ | |
4439 | int using_default_coding = 0; | |
4440 | int force_raw_text = 0; | |
4441 | ||
4442 | val = current_buffer->buffer_file_coding_system; | |
4443 | if (NILP (val) | |
4444 | || NILP (Flocal_variable_p (Qbuffer_file_coding_system, Qnil))) | |
4445 | { | |
4446 | val = Qnil; | |
4447 | if (NILP (current_buffer->enable_multibyte_characters)) | |
4448 | force_raw_text = 1; | |
4449 | } | |
efdc16c9 | 4450 | |
7c82a4a9 SM |
4451 | if (NILP (val)) |
4452 | { | |
4453 | /* Check file-coding-system-alist. */ | |
4454 | Lisp_Object args[7], coding_systems; | |
4455 | ||
4456 | args[0] = Qwrite_region; args[1] = start; args[2] = end; | |
4457 | args[3] = filename; args[4] = append; args[5] = visit; | |
4458 | args[6] = lockname; | |
4459 | coding_systems = Ffind_operation_coding_system (7, args); | |
4460 | if (CONSP (coding_systems) && !NILP (XCDR (coding_systems))) | |
4461 | val = XCDR (coding_systems); | |
4462 | } | |
4463 | ||
c934586d | 4464 | if (NILP (val)) |
7c82a4a9 SM |
4465 | { |
4466 | /* If we still have not decided a coding system, use the | |
4467 | default value of buffer-file-coding-system. */ | |
4468 | val = current_buffer->buffer_file_coding_system; | |
4469 | using_default_coding = 1; | |
4470 | } | |
efdc16c9 | 4471 | |
db327c7e KH |
4472 | if (! NILP (val) && ! force_raw_text) |
4473 | { | |
4474 | Lisp_Object spec, attrs; | |
4475 | ||
4476 | CHECK_CODING_SYSTEM_GET_SPEC (val, spec); | |
4477 | attrs = AREF (spec, 0); | |
4478 | if (EQ (CODING_ATTR_TYPE (attrs), Qraw_text)) | |
4479 | force_raw_text = 1; | |
4480 | } | |
4481 | ||
7c82a4a9 SM |
4482 | if (!force_raw_text |
4483 | && !NILP (Ffboundp (Vselect_safe_coding_system_function))) | |
4484 | /* Confirm that VAL can surely encode the current region. */ | |
905a4276 PJ |
4485 | val = call5 (Vselect_safe_coding_system_function, |
4486 | start, end, val, Qnil, filename); | |
7c82a4a9 | 4487 | |
db327c7e KH |
4488 | /* If the decided coding-system doesn't specify end-of-line |
4489 | format, we use that of | |
4490 | `default-buffer-file-coding-system'. */ | |
c934586d KH |
4491 | if (! using_default_coding |
4492 | && ! NILP (buffer_defaults.buffer_file_coding_system)) | |
db327c7e KH |
4493 | val = (coding_inherit_eol_type |
4494 | (val, buffer_defaults.buffer_file_coding_system)); | |
7c82a4a9 | 4495 | |
db327c7e KH |
4496 | /* If we decide not to encode text, use `raw-text' or one of its |
4497 | subsidiaries. */ | |
7c82a4a9 | 4498 | if (force_raw_text) |
db327c7e | 4499 | val = raw_text_coding_system (val); |
7c82a4a9 SM |
4500 | } |
4501 | ||
75421805 | 4502 | val = coding_inherit_eol_type (val, eol_parent); |
c934586d | 4503 | setup_coding_system (val, coding); |
7c82a4a9 | 4504 | |
7c82a4a9 SM |
4505 | if (!STRINGP (start) && !NILP (current_buffer->selective_display)) |
4506 | coding->mode |= CODING_MODE_SELECTIVE_DISPLAY; | |
c934586d | 4507 | return val; |
7c82a4a9 SM |
4508 | } |
4509 | ||
de1d0127 | 4510 | DEFUN ("write-region", Fwrite_region, Swrite_region, 3, 7, |
8c1a1077 PJ |
4511 | "r\nFWrite region to file: \ni\ni\ni\np", |
4512 | doc: /* Write current region into specified file. | |
c2efea25 RS |
4513 | When called from a program, requires three arguments: |
4514 | START, END and FILENAME. START and END are normally buffer positions | |
4515 | specifying the part of the buffer to write. | |
4516 | If START is nil, that means to use the entire buffer contents. | |
4517 | If START is a string, then output that string to the file | |
4518 | instead of any buffer contents; END is ignored. | |
4519 | ||
8c1a1077 PJ |
4520 | Optional fourth argument APPEND if non-nil means |
4521 | append to existing file contents (if any). If it is an integer, | |
4522 | seek to that offset in the file before writing. | |
36e50520 | 4523 | Optional fifth argument VISIT, if t or a string, means |
8c1a1077 PJ |
4524 | set the last-save-file-modtime of buffer to this file's modtime |
4525 | and mark buffer not modified. | |
4526 | If VISIT is a string, it is a second file name; | |
4527 | the output goes to FILENAME, but the buffer is marked as visiting VISIT. | |
4528 | VISIT is also the file name to lock and unlock for clash detection. | |
4529 | If VISIT is neither t nor nil nor a string, | |
5f4e6aa9 | 4530 | that means do not display the \"Wrote file\" message. |
8c1a1077 PJ |
4531 | The optional sixth arg LOCKNAME, if non-nil, specifies the name to |
4532 | use for locking and unlocking, overriding FILENAME and VISIT. | |
4533 | The optional seventh arg MUSTBENEW, if non-nil, insists on a check | |
4534 | for an existing file with the same name. If MUSTBENEW is `excl', | |
4535 | that means to get an error if the file already exists; never overwrite. | |
4536 | If MUSTBENEW is neither nil nor `excl', that means ask for | |
4537 | confirmation before overwriting, but do go ahead and overwrite the file | |
4538 | if the user confirms. | |
8c1a1077 PJ |
4539 | |
4540 | This does code conversion according to the value of | |
4541 | `coding-system-for-write', `buffer-file-coding-system', or | |
4542 | `file-coding-system-alist', and sets the variable | |
aacd8ba1 GM |
4543 | `last-coding-system-used' to the coding system actually used. |
4544 | ||
4545 | This calls `write-region-annotate-functions' at the start, and | |
4546 | `write-region-post-annotation-function' at the end. */) | |
5842a27b | 4547 | (Lisp_Object start, Lisp_Object end, Lisp_Object filename, Lisp_Object append, Lisp_Object visit, Lisp_Object lockname, Lisp_Object mustbenew) |
570d7624 JB |
4548 | { |
4549 | register int desc; | |
4550 | int failure; | |
6bbd7a29 | 4551 | int save_errno = 0; |
19290c65 | 4552 | const unsigned char *fn; |
570d7624 | 4553 | struct stat st; |
aed13378 | 4554 | int count = SPECPDL_INDEX (); |
6fc6f94b | 4555 | int count1; |
3eac9910 | 4556 | Lisp_Object handler; |
4ad827c5 | 4557 | Lisp_Object visit_file; |
65b7d3e7 | 4558 | Lisp_Object annotations; |
b1d1b865 | 4559 | Lisp_Object encoded_filename; |
d3a67486 SM |
4560 | int visiting = (EQ (visit, Qt) || STRINGP (visit)); |
4561 | int quietly = !NILP (visit); | |
7204a979 | 4562 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5; |
6fc6f94b | 4563 | struct buffer *given_buffer; |
5e570b75 | 4564 | #ifdef DOS_NT |
fa228724 | 4565 | int buffer_file_type = O_BINARY; |
5e570b75 | 4566 | #endif /* DOS_NT */ |
6fdaa9a0 | 4567 | struct coding_system coding; |
570d7624 | 4568 | |
d3a67486 | 4569 | if (current_buffer->base_buffer && visiting) |
95385625 RS |
4570 | error ("Cannot do file visiting in an indirect buffer"); |
4571 | ||
561cb8e1 | 4572 | if (!NILP (start) && !STRINGP (start)) |
570d7624 JB |
4573 | validate_region (&start, &end); |
4574 | ||
95c1c901 | 4575 | visit_file = Qnil; |
59fac292 | 4576 | GCPRO5 (start, filename, visit, visit_file, lockname); |
b56567b5 | 4577 | |
570d7624 | 4578 | filename = Fexpand_file_name (filename, Qnil); |
de1d0127 | 4579 | |
236a12f2 | 4580 | if (!NILP (mustbenew) && !EQ (mustbenew, Qexcl)) |
b8b29dc9 | 4581 | barf_or_query_if_file_exists (filename, "overwrite", 1, 0, 1); |
de1d0127 | 4582 | |
561cb8e1 | 4583 | if (STRINGP (visit)) |
e5176bae | 4584 | visit_file = Fexpand_file_name (visit, Qnil); |
4ad827c5 RS |
4585 | else |
4586 | visit_file = filename; | |
4587 | ||
7204a979 RS |
4588 | if (NILP (lockname)) |
4589 | lockname = visit_file; | |
4590 | ||
65b7d3e7 RS |
4591 | annotations = Qnil; |
4592 | ||
32f4334d RS |
4593 | /* If the file name has special constructs in it, |
4594 | call the corresponding file handler. */ | |
49307295 | 4595 | handler = Ffind_file_name_handler (filename, Qwrite_region); |
b56ad927 | 4596 | /* If FILENAME has no handler, see if VISIT has one. */ |
93c30b5f | 4597 | if (NILP (handler) && STRINGP (visit)) |
199607e4 | 4598 | handler = Ffind_file_name_handler (visit, Qwrite_region); |
3eac9910 | 4599 | |
32f4334d RS |
4600 | if (!NILP (handler)) |
4601 | { | |
32f4334d | 4602 | Lisp_Object val; |
51cf6d37 RS |
4603 | val = call6 (handler, Qwrite_region, start, end, |
4604 | filename, append, visit); | |
32f4334d | 4605 | |
d6a3cc15 | 4606 | if (visiting) |
32f4334d | 4607 | { |
95385625 | 4608 | SAVE_MODIFF = MODIFF; |
090101cf | 4609 | XSETFASTINT (current_buffer->save_length, Z - BEG); |
3b7792ed | 4610 | current_buffer->filename = visit_file; |
32f4334d | 4611 | } |
09121adc | 4612 | UNGCPRO; |
32f4334d RS |
4613 | return val; |
4614 | } | |
4615 | ||
4a38de71 KH |
4616 | record_unwind_protect (save_restriction_restore, save_restriction_save ()); |
4617 | ||
561cb8e1 RS |
4618 | /* Special kludge to simplify auto-saving. */ |
4619 | if (NILP (start)) | |
4620 | { | |
6b3d752c SM |
4621 | /* Do it later, so write-region-annotate-function can work differently |
4622 | if we save "the buffer" vs "a region". | |
4623 | This is useful in tar-mode. --Stef | |
2acfd7ae | 4624 | XSETFASTINT (start, BEG); |
6b3d752c | 4625 | XSETFASTINT (end, Z); */ |
4a38de71 | 4626 | Fwiden (); |
561cb8e1 RS |
4627 | } |
4628 | ||
67fbc0cb CY |
4629 | record_unwind_protect (build_annotations_unwind, |
4630 | Vwrite_region_annotation_buffers); | |
4631 | Vwrite_region_annotation_buffers = Fcons (Fcurrent_buffer (), Qnil); | |
aed13378 | 4632 | count1 = SPECPDL_INDEX (); |
6fc6f94b RS |
4633 | |
4634 | given_buffer = current_buffer; | |
bf3428a1 RS |
4635 | |
4636 | if (!STRINGP (start)) | |
236a12f2 | 4637 | { |
bf3428a1 RS |
4638 | annotations = build_annotations (start, end); |
4639 | ||
4640 | if (current_buffer != given_buffer) | |
4641 | { | |
4642 | XSETFASTINT (start, BEGV); | |
4643 | XSETFASTINT (end, ZV); | |
4644 | } | |
236a12f2 SM |
4645 | } |
4646 | ||
6b3d752c SM |
4647 | if (NILP (start)) |
4648 | { | |
4649 | XSETFASTINT (start, BEGV); | |
4650 | XSETFASTINT (end, ZV); | |
4651 | } | |
4652 | ||
236a12f2 SM |
4653 | UNGCPRO; |
4654 | ||
4655 | GCPRO5 (start, filename, annotations, visit_file, lockname); | |
4656 | ||
59fac292 SM |
4657 | /* Decide the coding-system to encode the data with. |
4658 | We used to make this choice before calling build_annotations, but that | |
4659 | leads to problems when a write-annotate-function takes care of | |
4660 | unsavable chars (as was the case with X-Symbol). */ | |
c934586d KH |
4661 | Vlast_coding_system_used |
4662 | = choose_write_coding_system (start, end, filename, | |
4663 | append, visit, lockname, &coding); | |
d6a3cc15 | 4664 | |
570d7624 JB |
4665 | #ifdef CLASH_DETECTION |
4666 | if (!auto_saving) | |
67fbc0cb | 4667 | lock_file (lockname); |
570d7624 JB |
4668 | #endif /* CLASH_DETECTION */ |
4669 | ||
b1d1b865 RS |
4670 | encoded_filename = ENCODE_FILE (filename); |
4671 | ||
d5db4077 | 4672 | fn = SDATA (encoded_filename); |
570d7624 | 4673 | desc = -1; |
265a9e55 | 4674 | if (!NILP (append)) |
5e570b75 | 4675 | #ifdef DOS_NT |
68c45bf0 | 4676 | desc = emacs_open (fn, O_WRONLY | buffer_file_type, 0); |
5e570b75 | 4677 | #else /* not DOS_NT */ |
68c45bf0 | 4678 | desc = emacs_open (fn, O_WRONLY, 0); |
5e570b75 | 4679 | #endif /* not DOS_NT */ |
570d7624 | 4680 | |
b1d1b865 | 4681 | if (desc < 0 && (NILP (append) || errno == ENOENT)) |
5e570b75 | 4682 | #ifdef DOS_NT |
68c45bf0 | 4683 | desc = emacs_open (fn, |
95522746 GM |
4684 | O_WRONLY | O_CREAT | buffer_file_type |
4685 | | (EQ (mustbenew, Qexcl) ? O_EXCL : O_TRUNC), | |
68c45bf0 | 4686 | S_IREAD | S_IWRITE); |
5e570b75 | 4687 | #else /* not DOS_NT */ |
68c45bf0 | 4688 | desc = emacs_open (fn, O_WRONLY | O_TRUNC | O_CREAT |
7c752c80 | 4689 | | (EQ (mustbenew, Qexcl) ? O_EXCL : 0), |
68c45bf0 | 4690 | auto_saving ? auto_save_mode_bits : 0666); |
5e570b75 | 4691 | #endif /* not DOS_NT */ |
570d7624 JB |
4692 | |
4693 | if (desc < 0) | |
4694 | { | |
4695 | #ifdef CLASH_DETECTION | |
4696 | save_errno = errno; | |
7204a979 | 4697 | if (!auto_saving) unlock_file (lockname); |
570d7624 JB |
4698 | errno = save_errno; |
4699 | #endif /* CLASH_DETECTION */ | |
43fb7d9a | 4700 | UNGCPRO; |
570d7624 JB |
4701 | report_file_error ("Opening output file", Fcons (filename, Qnil)); |
4702 | } | |
4703 | ||
4704 | record_unwind_protect (close_file_unwind, make_number (desc)); | |
4705 | ||
c1c4693e | 4706 | if (!NILP (append) && !NILP (Ffile_regular_p (filename))) |
43fb7d9a DL |
4707 | { |
4708 | long ret; | |
efdc16c9 | 4709 | |
43fb7d9a DL |
4710 | if (NUMBERP (append)) |
4711 | ret = lseek (desc, XINT (append), 1); | |
4712 | else | |
4713 | ret = lseek (desc, 0, 2); | |
4714 | if (ret < 0) | |
4715 | { | |
570d7624 | 4716 | #ifdef CLASH_DETECTION |
43fb7d9a | 4717 | if (!auto_saving) unlock_file (lockname); |
570d7624 | 4718 | #endif /* CLASH_DETECTION */ |
43fb7d9a DL |
4719 | UNGCPRO; |
4720 | report_file_error ("Lseek error", Fcons (filename, Qnil)); | |
4721 | } | |
4722 | } | |
efdc16c9 | 4723 | |
43fb7d9a | 4724 | UNGCPRO; |
570d7624 | 4725 | |
570d7624 JB |
4726 | failure = 0; |
4727 | immediate_quit = 1; | |
4728 | ||
561cb8e1 | 4729 | if (STRINGP (start)) |
570d7624 | 4730 | { |
d5db4077 | 4731 | failure = 0 > a_write (desc, start, 0, SCHARS (start), |
ce51c54c | 4732 | &annotations, &coding); |
570d7624 JB |
4733 | save_errno = errno; |
4734 | } | |
4735 | else if (XINT (start) != XINT (end)) | |
4736 | { | |
db327c7e KH |
4737 | failure = 0 > a_write (desc, Qnil, |
4738 | XINT (start), XINT (end) - XINT (start), | |
4739 | &annotations, &coding); | |
4740 | save_errno = errno; | |
69f6e679 RS |
4741 | } |
4742 | else | |
4743 | { | |
4744 | /* If file was empty, still need to write the annotations */ | |
c8a6d68a | 4745 | coding.mode |= CODING_MODE_LAST_BLOCK; |
ce51c54c | 4746 | failure = 0 > a_write (desc, Qnil, XINT (end), 0, &annotations, &coding); |
6fdaa9a0 KH |
4747 | save_errno = errno; |
4748 | } | |
4749 | ||
c8a6d68a KH |
4750 | if (CODING_REQUIRE_FLUSHING (&coding) |
4751 | && !(coding.mode & CODING_MODE_LAST_BLOCK) | |
1354debd | 4752 | && ! failure) |
6fdaa9a0 KH |
4753 | { |
4754 | /* We have to flush out a data. */ | |
c8a6d68a | 4755 | coding.mode |= CODING_MODE_LAST_BLOCK; |
db327c7e | 4756 | failure = 0 > e_write (desc, Qnil, 1, 1, &coding); |
69f6e679 | 4757 | save_errno = errno; |
570d7624 JB |
4758 | } |
4759 | ||
4760 | immediate_quit = 0; | |
4761 | ||
6e23c83e | 4762 | #ifdef HAVE_FSYNC |
570d7624 JB |
4763 | /* Note fsync appears to change the modtime on BSD4.2 (both vax and sun). |
4764 | Disk full in NFS may be reported here. */ | |
1daffa1c RS |
4765 | /* mib says that closing the file will try to write as fast as NFS can do |
4766 | it, and that means the fsync here is not crucial for autosave files. */ | |
ccf61795 | 4767 | if (!auto_saving && !write_region_inhibit_fsync && fsync (desc) < 0) |
cb33c142 | 4768 | { |
6cff77fd AS |
4769 | /* If fsync fails with EINTR, don't treat that as serious. Also |
4770 | ignore EINVAL which happens when fsync is not supported on this | |
4771 | file. */ | |
4772 | if (errno != EINTR && errno != EINVAL) | |
cb33c142 KH |
4773 | failure = 1, save_errno = errno; |
4774 | } | |
570d7624 JB |
4775 | #endif |
4776 | ||
570d7624 | 4777 | /* NFS can report a write failure now. */ |
68c45bf0 | 4778 | if (emacs_close (desc) < 0) |
570d7624 JB |
4779 | failure = 1, save_errno = errno; |
4780 | ||
570d7624 | 4781 | stat (fn, &st); |
67fbc0cb | 4782 | |
6fc6f94b RS |
4783 | /* Discard the unwind protect for close_file_unwind. */ |
4784 | specpdl_ptr = specpdl + count1; | |
67fbc0cb CY |
4785 | |
4786 | /* Call write-region-post-annotation-function. */ | |
294fa707 | 4787 | while (CONSP (Vwrite_region_annotation_buffers)) |
67fbc0cb CY |
4788 | { |
4789 | Lisp_Object buf = XCAR (Vwrite_region_annotation_buffers); | |
4790 | if (!NILP (Fbuffer_live_p (buf))) | |
4791 | { | |
4792 | Fset_buffer (buf); | |
4793 | if (FUNCTIONP (Vwrite_region_post_annotation_function)) | |
4794 | call0 (Vwrite_region_post_annotation_function); | |
4795 | } | |
4796 | Vwrite_region_annotation_buffers | |
4797 | = XCDR (Vwrite_region_annotation_buffers); | |
4798 | } | |
4799 | ||
4800 | unbind_to (count, Qnil); | |
570d7624 JB |
4801 | |
4802 | #ifdef CLASH_DETECTION | |
4803 | if (!auto_saving) | |
7204a979 | 4804 | unlock_file (lockname); |
570d7624 JB |
4805 | #endif /* CLASH_DETECTION */ |
4806 | ||
4807 | /* Do this before reporting IO error | |
4808 | to avoid a "file has changed on disk" warning on | |
4809 | next attempt to save. */ | |
d6a3cc15 | 4810 | if (visiting) |
58b963f7 SM |
4811 | { |
4812 | current_buffer->modtime = st.st_mtime; | |
4813 | current_buffer->modtime_size = st.st_size; | |
4814 | } | |
570d7624 JB |
4815 | |
4816 | if (failure) | |
d5db4077 | 4817 | error ("IO error writing %s: %s", SDATA (filename), |
68c45bf0 | 4818 | emacs_strerror (save_errno)); |
570d7624 | 4819 | |
d6a3cc15 | 4820 | if (visiting) |
570d7624 | 4821 | { |
95385625 | 4822 | SAVE_MODIFF = MODIFF; |
090101cf | 4823 | XSETFASTINT (current_buffer->save_length, Z - BEG); |
3b7792ed | 4824 | current_buffer->filename = visit_file; |
f4226e89 | 4825 | update_mode_lines++; |
570d7624 | 4826 | } |
d6a3cc15 | 4827 | else if (quietly) |
6b61353c KH |
4828 | { |
4829 | if (auto_saving | |
4830 | && ! NILP (Fstring_equal (current_buffer->filename, | |
4831 | current_buffer->auto_save_file_name))) | |
4832 | SAVE_MODIFF = MODIFF; | |
4833 | ||
4834 | return Qnil; | |
4835 | } | |
570d7624 JB |
4836 | |
4837 | if (!auto_saving) | |
6b61353c | 4838 | message_with_string ((INTEGERP (append) |
0c328a0e RS |
4839 | ? "Updated %s" |
4840 | : ! NILP (append) | |
4841 | ? "Added to %s" | |
4842 | : "Wrote %s"), | |
4843 | visit_file, 1); | |
570d7624 JB |
4844 | |
4845 | return Qnil; | |
4846 | } | |
ec7adf26 | 4847 | \f |
dd4c5104 | 4848 | Lisp_Object merge (Lisp_Object, Lisp_Object, Lisp_Object); |
d6a3cc15 RS |
4849 | |
4850 | DEFUN ("car-less-than-car", Fcar_less_than_car, Scar_less_than_car, 2, 2, 0, | |
8c1a1077 | 4851 | doc: /* Return t if (car A) is numerically less than (car B). */) |
5842a27b | 4852 | (Lisp_Object a, Lisp_Object b) |
d6a3cc15 RS |
4853 | { |
4854 | return Flss (Fcar (a), Fcar (b)); | |
4855 | } | |
4856 | ||
4857 | /* Build the complete list of annotations appropriate for writing out | |
4858 | the text between START and END, by calling all the functions in | |
6fc6f94b RS |
4859 | write-region-annotate-functions and merging the lists they return. |
4860 | If one of these functions switches to a different buffer, we assume | |
4861 | that buffer contains altered text. Therefore, the caller must | |
4862 | make sure to restore the current buffer in all cases, | |
4863 | as save-excursion would do. */ | |
d6a3cc15 RS |
4864 | |
4865 | static Lisp_Object | |
971de7fb | 4866 | build_annotations (Lisp_Object start, Lisp_Object end) |
d6a3cc15 RS |
4867 | { |
4868 | Lisp_Object annotations; | |
4869 | Lisp_Object p, res; | |
4870 | struct gcpro gcpro1, gcpro2; | |
0a20b684 | 4871 | Lisp_Object original_buffer; |
bd235610 | 4872 | int i, used_global = 0; |
0a20b684 RS |
4873 | |
4874 | XSETBUFFER (original_buffer, current_buffer); | |
d6a3cc15 RS |
4875 | |
4876 | annotations = Qnil; | |
4877 | p = Vwrite_region_annotate_functions; | |
4878 | GCPRO2 (annotations, p); | |
28c3eb5a | 4879 | while (CONSP (p)) |
d6a3cc15 | 4880 | { |
6fc6f94b | 4881 | struct buffer *given_buffer = current_buffer; |
bd235610 SM |
4882 | if (EQ (Qt, XCAR (p)) && !used_global) |
4883 | { /* Use the global value of the hook. */ | |
4884 | Lisp_Object arg[2]; | |
4885 | used_global = 1; | |
4886 | arg[0] = Fdefault_value (Qwrite_region_annotate_functions); | |
4887 | arg[1] = XCDR (p); | |
4888 | p = Fappend (2, arg); | |
4889 | continue; | |
4890 | } | |
6fc6f94b | 4891 | Vwrite_region_annotations_so_far = annotations; |
28c3eb5a | 4892 | res = call2 (XCAR (p), start, end); |
6fc6f94b RS |
4893 | /* If the function makes a different buffer current, |
4894 | assume that means this buffer contains altered text to be output. | |
4895 | Reset START and END from the buffer bounds | |
4896 | and discard all previous annotations because they should have | |
4897 | been dealt with by this function. */ | |
4898 | if (current_buffer != given_buffer) | |
4899 | { | |
67fbc0cb CY |
4900 | Vwrite_region_annotation_buffers |
4901 | = Fcons (Fcurrent_buffer (), | |
4902 | Vwrite_region_annotation_buffers); | |
3cf29f61 RS |
4903 | XSETFASTINT (start, BEGV); |
4904 | XSETFASTINT (end, ZV); | |
6fc6f94b RS |
4905 | annotations = Qnil; |
4906 | } | |
d6a3cc15 RS |
4907 | Flength (res); /* Check basic validity of return value */ |
4908 | annotations = merge (annotations, res, Qcar_less_than_car); | |
28c3eb5a | 4909 | p = XCDR (p); |
d6a3cc15 | 4910 | } |
0d420e88 BG |
4911 | |
4912 | /* Now do the same for annotation functions implied by the file-format */ | |
f844ba4e LT |
4913 | if (auto_saving && (!EQ (current_buffer->auto_save_file_format, Qt))) |
4914 | p = current_buffer->auto_save_file_format; | |
0d420e88 BG |
4915 | else |
4916 | p = current_buffer->file_format; | |
28c3eb5a | 4917 | for (i = 0; CONSP (p); p = XCDR (p), ++i) |
0d420e88 BG |
4918 | { |
4919 | struct buffer *given_buffer = current_buffer; | |
efdc16c9 | 4920 | |
0d420e88 | 4921 | Vwrite_region_annotations_so_far = annotations; |
532ed661 GM |
4922 | |
4923 | /* Value is either a list of annotations or nil if the function | |
4924 | has written annotations to a temporary buffer, which is now | |
4925 | current. */ | |
28c3eb5a | 4926 | res = call5 (Qformat_annotate_function, XCAR (p), start, end, |
532ed661 | 4927 | original_buffer, make_number (i)); |
0d420e88 BG |
4928 | if (current_buffer != given_buffer) |
4929 | { | |
3cf29f61 RS |
4930 | XSETFASTINT (start, BEGV); |
4931 | XSETFASTINT (end, ZV); | |
0d420e88 BG |
4932 | annotations = Qnil; |
4933 | } | |
efdc16c9 | 4934 | |
532ed661 GM |
4935 | if (CONSP (res)) |
4936 | annotations = merge (annotations, res, Qcar_less_than_car); | |
0d420e88 | 4937 | } |
6fdaa9a0 | 4938 | |
236a12f2 SM |
4939 | UNGCPRO; |
4940 | return annotations; | |
4941 | } | |
4942 | ||
ec7adf26 | 4943 | \f |
ce51c54c KH |
4944 | /* Write to descriptor DESC the NCHARS chars starting at POS of STRING. |
4945 | If STRING is nil, POS is the character position in the current buffer. | |
d6a3cc15 | 4946 | Intersperse with them the annotations from *ANNOT |
ce51c54c | 4947 | which fall within the range of POS to POS + NCHARS, |
d6a3cc15 RS |
4948 | each at its appropriate position. |
4949 | ||
ec7adf26 RS |
4950 | We modify *ANNOT by discarding elements as we use them up. |
4951 | ||
d6a3cc15 RS |
4952 | The return value is negative in case of system call failure. */ |
4953 | ||
ec7adf26 | 4954 | static int |
971de7fb | 4955 | a_write (int desc, Lisp_Object string, int pos, register int nchars, Lisp_Object *annot, struct coding_system *coding) |
d6a3cc15 RS |
4956 | { |
4957 | Lisp_Object tem; | |
4958 | int nextpos; | |
ce51c54c | 4959 | int lastpos = pos + nchars; |
d6a3cc15 | 4960 | |
eb15aa18 | 4961 | while (NILP (*annot) || CONSP (*annot)) |
d6a3cc15 RS |
4962 | { |
4963 | tem = Fcar_safe (Fcar (*annot)); | |
ce51c54c | 4964 | nextpos = pos - 1; |
ec7adf26 | 4965 | if (INTEGERP (tem)) |
ce51c54c | 4966 | nextpos = XFASTINT (tem); |
ec7adf26 RS |
4967 | |
4968 | /* If there are no more annotations in this range, | |
4969 | output the rest of the range all at once. */ | |
ce51c54c KH |
4970 | if (! (nextpos >= pos && nextpos <= lastpos)) |
4971 | return e_write (desc, string, pos, lastpos, coding); | |
ec7adf26 RS |
4972 | |
4973 | /* Output buffer text up to the next annotation's position. */ | |
ce51c54c | 4974 | if (nextpos > pos) |
d6a3cc15 | 4975 | { |
055a28c9 | 4976 | if (0 > e_write (desc, string, pos, nextpos, coding)) |
d6a3cc15 | 4977 | return -1; |
ce51c54c | 4978 | pos = nextpos; |
d6a3cc15 | 4979 | } |
ec7adf26 | 4980 | /* Output the annotation. */ |
d6a3cc15 RS |
4981 | tem = Fcdr (Fcar (*annot)); |
4982 | if (STRINGP (tem)) | |
4983 | { | |
d5db4077 | 4984 | if (0 > e_write (desc, tem, 0, SCHARS (tem), coding)) |
d6a3cc15 RS |
4985 | return -1; |
4986 | } | |
4987 | *annot = Fcdr (*annot); | |
4988 | } | |
dfcf069d | 4989 | return 0; |
d6a3cc15 RS |
4990 | } |
4991 | ||
6fdaa9a0 | 4992 | |
ce51c54c KH |
4993 | /* Write text in the range START and END into descriptor DESC, |
4994 | encoding them with coding system CODING. If STRING is nil, START | |
4995 | and END are character positions of the current buffer, else they | |
4996 | are indexes to the string STRING. */ | |
ec7adf26 RS |
4997 | |
4998 | static int | |
971de7fb | 4999 | e_write (int desc, Lisp_Object string, int start, int end, struct coding_system *coding) |
570d7624 | 5000 | { |
ce51c54c KH |
5001 | if (STRINGP (string)) |
5002 | { | |
db327c7e | 5003 | start = 0; |
8f924df7 | 5004 | end = SCHARS (string); |
ce51c54c | 5005 | } |
570d7624 | 5006 | |
6fdaa9a0 KH |
5007 | /* We used to have a code for handling selective display here. But, |
5008 | now it is handled within encode_coding. */ | |
01ca97a2 KH |
5009 | |
5010 | while (start < end) | |
570d7624 | 5011 | { |
01ca97a2 | 5012 | if (STRINGP (string)) |
6ad568dd | 5013 | { |
01ca97a2 KH |
5014 | coding->src_multibyte = SCHARS (string) < SBYTES (string); |
5015 | if (CODING_REQUIRE_ENCODING (coding)) | |
5016 | { | |
5017 | encode_coding_object (coding, string, | |
5018 | start, string_char_to_byte (string, start), | |
5019 | end, string_char_to_byte (string, end), Qt); | |
5020 | } | |
5021 | else | |
5022 | { | |
5023 | coding->dst_object = string; | |
5024 | coding->consumed_char = SCHARS (string); | |
5025 | coding->produced = SBYTES (string); | |
5026 | } | |
6ad568dd | 5027 | } |
db327c7e | 5028 | else |
6ad568dd | 5029 | { |
01ca97a2 KH |
5030 | int start_byte = CHAR_TO_BYTE (start); |
5031 | int end_byte = CHAR_TO_BYTE (end); | |
b4132433 | 5032 | |
01ca97a2 KH |
5033 | coding->src_multibyte = (end - start) < (end_byte - start_byte); |
5034 | if (CODING_REQUIRE_ENCODING (coding)) | |
5035 | { | |
5036 | encode_coding_object (coding, Fcurrent_buffer (), | |
5037 | start, start_byte, end, end_byte, Qt); | |
5038 | } | |
5039 | else | |
5040 | { | |
5041 | coding->dst_object = Qnil; | |
5042 | coding->dst_pos_byte = start_byte; | |
5043 | if (start >= GPT || end <= GPT) | |
5044 | { | |
5045 | coding->consumed_char = end - start; | |
5046 | coding->produced = end_byte - start_byte; | |
5047 | } | |
5048 | else | |
5049 | { | |
5050 | coding->consumed_char = GPT - start; | |
5051 | coding->produced = GPT_BYTE - start_byte; | |
5052 | } | |
5053 | } | |
c185d744 | 5054 | } |
01ca97a2 KH |
5055 | |
5056 | if (coding->produced > 0) | |
c185d744 | 5057 | { |
01ca97a2 KH |
5058 | coding->produced -= |
5059 | emacs_write (desc, | |
5060 | STRINGP (coding->dst_object) | |
5061 | ? SDATA (coding->dst_object) | |
5062 | : BYTE_POS_ADDR (coding->dst_pos_byte), | |
5063 | coding->produced); | |
5064 | ||
5065 | if (coding->produced) | |
5066 | return -1; | |
570d7624 | 5067 | } |
01ca97a2 | 5068 | start += coding->consumed_char; |
c185d744 KH |
5069 | } |
5070 | ||
5071 | return 0; | |
570d7624 | 5072 | } |
ec7adf26 | 5073 | \f |
570d7624 | 5074 | DEFUN ("verify-visited-file-modtime", Fverify_visited_file_modtime, |
8c1a1077 PJ |
5075 | Sverify_visited_file_modtime, 1, 1, 0, |
5076 | doc: /* Return t if last mod time of BUF's visited file matches what BUF records. | |
6b61353c KH |
5077 | This means that the file has not been changed since it was visited or saved. |
5078 | See Info node `(elisp)Modification Time' for more details. */) | |
5842a27b | 5079 | (Lisp_Object buf) |
570d7624 JB |
5080 | { |
5081 | struct buffer *b; | |
5082 | struct stat st; | |
32f4334d | 5083 | Lisp_Object handler; |
b1d1b865 | 5084 | Lisp_Object filename; |
570d7624 | 5085 | |
b7826503 | 5086 | CHECK_BUFFER (buf); |
570d7624 JB |
5087 | b = XBUFFER (buf); |
5088 | ||
93c30b5f | 5089 | if (!STRINGP (b->filename)) return Qt; |
570d7624 JB |
5090 | if (b->modtime == 0) return Qt; |
5091 | ||
32f4334d RS |
5092 | /* If the file name has special constructs in it, |
5093 | call the corresponding file handler. */ | |
49307295 KH |
5094 | handler = Ffind_file_name_handler (b->filename, |
5095 | Qverify_visited_file_modtime); | |
32f4334d | 5096 | if (!NILP (handler)) |
09121adc | 5097 | return call2 (handler, Qverify_visited_file_modtime, buf); |
32f4334d | 5098 | |
b1d1b865 RS |
5099 | filename = ENCODE_FILE (b->filename); |
5100 | ||
d5db4077 | 5101 | if (stat (SDATA (filename), &st) < 0) |
570d7624 JB |
5102 | { |
5103 | /* If the file doesn't exist now and didn't exist before, | |
5104 | we say that it isn't modified, provided the error is a tame one. */ | |
5105 | if (errno == ENOENT || errno == EACCES || errno == ENOTDIR) | |
5106 | st.st_mtime = -1; | |
5107 | else | |
5108 | st.st_mtime = 0; | |
5109 | } | |
58b963f7 SM |
5110 | if ((st.st_mtime == b->modtime |
5111 | /* If both are positive, accept them if they are off by one second. */ | |
5112 | || (st.st_mtime > 0 && b->modtime > 0 | |
5113 | && (st.st_mtime == b->modtime + 1 | |
5114 | || st.st_mtime == b->modtime - 1))) | |
5115 | && (st.st_size == b->modtime_size | |
5116 | || b->modtime_size < 0)) | |
570d7624 JB |
5117 | return Qt; |
5118 | return Qnil; | |
5119 | } | |
5120 | ||
5121 | DEFUN ("clear-visited-file-modtime", Fclear_visited_file_modtime, | |
8c1a1077 PJ |
5122 | Sclear_visited_file_modtime, 0, 0, 0, |
5123 | doc: /* Clear out records of last mod time of visited file. | |
5124 | Next attempt to save will certainly not complain of a discrepancy. */) | |
5842a27b | 5125 | (void) |
570d7624 JB |
5126 | { |
5127 | current_buffer->modtime = 0; | |
58b963f7 | 5128 | current_buffer->modtime_size = -1; |
570d7624 JB |
5129 | return Qnil; |
5130 | } | |
5131 | ||
f5d5eccf | 5132 | DEFUN ("visited-file-modtime", Fvisited_file_modtime, |
8c1a1077 PJ |
5133 | Svisited_file_modtime, 0, 0, 0, |
5134 | doc: /* Return the current buffer's recorded visited file modification time. | |
e5fcddc8 | 5135 | The value is a list of the form (HIGH LOW), like the time values |
6b61353c KH |
5136 | that `file-attributes' returns. If the current buffer has no recorded |
5137 | file modification time, this function returns 0. | |
5138 | See Info node `(elisp)Modification Time' for more details. */) | |
5842a27b | 5139 | (void) |
f5d5eccf | 5140 | { |
73ff9d42 RS |
5141 | if (! current_buffer->modtime) |
5142 | return make_number (0); | |
5143 | return make_time ((time_t) current_buffer->modtime); | |
f5d5eccf RS |
5144 | } |
5145 | ||
570d7624 | 5146 | DEFUN ("set-visited-file-modtime", Fset_visited_file_modtime, |
8c1a1077 PJ |
5147 | Sset_visited_file_modtime, 0, 1, 0, |
5148 | doc: /* Update buffer's recorded modification time from the visited file's time. | |
5149 | Useful if the buffer was not read from the file normally | |
5150 | or if the file itself has been changed for some known benign reason. | |
5151 | An argument specifies the modification time value to use | |
5152 | \(instead of that of the visited file), in the form of a list | |
5153 | \(HIGH . LOW) or (HIGH LOW). */) | |
5842a27b | 5154 | (Lisp_Object time_list) |
570d7624 | 5155 | { |
f5d5eccf | 5156 | if (!NILP (time_list)) |
58b963f7 SM |
5157 | { |
5158 | current_buffer->modtime = cons_to_long (time_list); | |
5159 | current_buffer->modtime_size = -1; | |
5160 | } | |
f5d5eccf RS |
5161 | else |
5162 | { | |
5163 | register Lisp_Object filename; | |
5164 | struct stat st; | |
5165 | Lisp_Object handler; | |
570d7624 | 5166 | |
f5d5eccf | 5167 | filename = Fexpand_file_name (current_buffer->filename, Qnil); |
32f4334d | 5168 | |
f5d5eccf RS |
5169 | /* If the file name has special constructs in it, |
5170 | call the corresponding file handler. */ | |
49307295 | 5171 | handler = Ffind_file_name_handler (filename, Qset_visited_file_modtime); |
f5d5eccf | 5172 | if (!NILP (handler)) |
caf3c431 | 5173 | /* The handler can find the file name the same way we did. */ |
76c881b0 | 5174 | return call2 (handler, Qset_visited_file_modtime, Qnil); |
b1d1b865 RS |
5175 | |
5176 | filename = ENCODE_FILE (filename); | |
5177 | ||
d5db4077 | 5178 | if (stat (SDATA (filename), &st) >= 0) |
58b963f7 SM |
5179 | { |
5180 | current_buffer->modtime = st.st_mtime; | |
5181 | current_buffer->modtime_size = st.st_size; | |
5182 | } | |
f5d5eccf | 5183 | } |
570d7624 JB |
5184 | |
5185 | return Qnil; | |
5186 | } | |
5187 | \f | |
5188 | Lisp_Object | |
971de7fb | 5189 | auto_save_error (Lisp_Object error) |
570d7624 | 5190 | { |
d7f31e22 GM |
5191 | Lisp_Object args[3], msg; |
5192 | int i, nbytes; | |
5193 | struct gcpro gcpro1; | |
dfc22242 KS |
5194 | char *msgbuf; |
5195 | USE_SAFE_ALLOCA; | |
efdc16c9 | 5196 | |
ca730bf0 CY |
5197 | auto_save_error_occurred = 1; |
5198 | ||
385ed61f | 5199 | ring_bell (XFRAME (selected_frame)); |
efdc16c9 | 5200 | |
d7f31e22 GM |
5201 | args[0] = build_string ("Auto-saving %s: %s"); |
5202 | args[1] = current_buffer->name; | |
5203 | args[2] = Ferror_message_string (error); | |
5204 | msg = Fformat (3, args); | |
5205 | GCPRO1 (msg); | |
d5db4077 | 5206 | nbytes = SBYTES (msg); |
dfc22242 | 5207 | SAFE_ALLOCA (msgbuf, char *, nbytes); |
72af86bd | 5208 | memcpy (msgbuf, SDATA (msg), nbytes); |
d7f31e22 GM |
5209 | |
5210 | for (i = 0; i < 3; ++i) | |
5211 | { | |
5212 | if (i == 0) | |
dfc22242 | 5213 | message2 (msgbuf, nbytes, STRING_MULTIBYTE (msg)); |
d7f31e22 | 5214 | else |
dfc22242 | 5215 | message2_nolog (msgbuf, nbytes, STRING_MULTIBYTE (msg)); |
d7f31e22 GM |
5216 | Fsleep_for (make_number (1), Qnil); |
5217 | } | |
5218 | ||
e01f7773 | 5219 | SAFE_FREE (); |
d7f31e22 | 5220 | UNGCPRO; |
570d7624 JB |
5221 | return Qnil; |
5222 | } | |
5223 | ||
5224 | Lisp_Object | |
971de7fb | 5225 | auto_save_1 (void) |
570d7624 | 5226 | { |
570d7624 | 5227 | struct stat st; |
d4a42098 KS |
5228 | Lisp_Object modes; |
5229 | ||
5230 | auto_save_mode_bits = 0666; | |
570d7624 JB |
5231 | |
5232 | /* Get visited file's mode to become the auto save file's mode. */ | |
d4a42098 KS |
5233 | if (! NILP (current_buffer->filename)) |
5234 | { | |
5235 | if (stat (SDATA (current_buffer->filename), &st) >= 0) | |
5236 | /* But make sure we can overwrite it later! */ | |
5237 | auto_save_mode_bits = st.st_mode | 0600; | |
5238 | else if ((modes = Ffile_modes (current_buffer->filename), | |
5239 | INTEGERP (modes))) | |
5240 | /* Remote files don't cooperate with stat. */ | |
5241 | auto_save_mode_bits = XINT (modes) | 0600; | |
5242 | } | |
570d7624 JB |
5243 | |
5244 | return | |
699b53bc CY |
5245 | Fwrite_region (Qnil, Qnil, current_buffer->auto_save_file_name, Qnil, |
5246 | NILP (Vauto_save_visited_file_name) ? Qlambda : Qt, | |
5247 | Qnil, Qnil); | |
570d7624 JB |
5248 | } |
5249 | ||
e54d3b5d | 5250 | static Lisp_Object |
971de7fb DN |
5251 | do_auto_save_unwind (Lisp_Object arg) /* used as unwind-protect function */ |
5252 | ||
e54d3b5d | 5253 | { |
fff7e982 | 5254 | FILE *stream = (FILE *) XSAVE_VALUE (arg)->pointer; |
3be3c08e | 5255 | auto_saving = 0; |
fff7e982 | 5256 | if (stream != NULL) |
aab12958 YM |
5257 | { |
5258 | BLOCK_INPUT; | |
5259 | fclose (stream); | |
5260 | UNBLOCK_INPUT; | |
5261 | } | |
e54d3b5d RS |
5262 | return Qnil; |
5263 | } | |
5264 | ||
a8c828be | 5265 | static Lisp_Object |
971de7fb DN |
5266 | do_auto_save_unwind_1 (Lisp_Object value) /* used as unwind-protect function */ |
5267 | ||
a8c828be RS |
5268 | { |
5269 | minibuffer_auto_raise = XINT (value); | |
5270 | return Qnil; | |
5271 | } | |
5272 | ||
5794dd61 | 5273 | static Lisp_Object |
971de7fb | 5274 | do_auto_save_make_dir (Lisp_Object dir) |
5794dd61 | 5275 | { |
26816cbf SG |
5276 | Lisp_Object mode; |
5277 | ||
5278 | call2 (Qmake_directory, dir, Qt); | |
5279 | XSETFASTINT (mode, 0700); | |
5280 | return Fset_file_modes (dir, mode); | |
5794dd61 RS |
5281 | } |
5282 | ||
5283 | static Lisp_Object | |
971de7fb | 5284 | do_auto_save_eh (Lisp_Object ignore) |
5794dd61 RS |
5285 | { |
5286 | return Qnil; | |
5287 | } | |
5288 | ||
570d7624 | 5289 | DEFUN ("do-auto-save", Fdo_auto_save, Sdo_auto_save, 0, 2, "", |
8c1a1077 PJ |
5290 | doc: /* Auto-save all buffers that need it. |
5291 | This is all buffers that have auto-saving enabled | |
5292 | and are changed since last auto-saved. | |
5293 | Auto-saving writes the buffer into a file | |
5294 | so that your editing is not lost if the system crashes. | |
5295 | This file is not the file you visited; that changes only when you save. | |
5296 | Normally we run the normal hook `auto-save-hook' before saving. | |
5297 | ||
5298 | A non-nil NO-MESSAGE argument means do not print any message if successful. | |
5299 | A non-nil CURRENT-ONLY argument means save only current buffer. */) | |
5842a27b | 5300 | (Lisp_Object no_message, Lisp_Object current_only) |
570d7624 JB |
5301 | { |
5302 | struct buffer *old = current_buffer, *b; | |
5303 | Lisp_Object tail, buf; | |
5304 | int auto_saved = 0; | |
f14b1c68 | 5305 | int do_handled_files; |
ff4c9993 | 5306 | Lisp_Object oquit; |
fff7e982 | 5307 | FILE *stream = NULL; |
aed13378 | 5308 | int count = SPECPDL_INDEX (); |
a8c828be | 5309 | int orig_minibuffer_auto_raise = minibuffer_auto_raise; |
5794dd61 | 5310 | int old_message_p = 0; |
d57563b6 | 5311 | struct gcpro gcpro1, gcpro2; |
38da540d RS |
5312 | |
5313 | if (max_specpdl_size < specpdl_size + 40) | |
5314 | max_specpdl_size = specpdl_size + 40; | |
5315 | ||
5316 | if (minibuf_level) | |
5317 | no_message = Qt; | |
5318 | ||
5794dd61 RS |
5319 | if (NILP (no_message)) |
5320 | { | |
5321 | old_message_p = push_message (); | |
5322 | record_unwind_protect (pop_message_unwind, Qnil); | |
5323 | } | |
efdc16c9 | 5324 | |
ff4c9993 RS |
5325 | /* Ordinarily don't quit within this function, |
5326 | but don't make it impossible to quit (in case we get hung in I/O). */ | |
5327 | oquit = Vquit_flag; | |
5328 | Vquit_flag = Qnil; | |
570d7624 JB |
5329 | |
5330 | /* No GCPRO needed, because (when it matters) all Lisp_Object variables | |
5331 | point to non-strings reached from Vbuffer_alist. */ | |
5332 | ||
265a9e55 | 5333 | if (!NILP (Vrun_hooks)) |
570d7624 JB |
5334 | call1 (Vrun_hooks, intern ("auto-save-hook")); |
5335 | ||
e54d3b5d RS |
5336 | if (STRINGP (Vauto_save_list_file_name)) |
5337 | { | |
0894672f | 5338 | Lisp_Object listfile; |
efdc16c9 | 5339 | |
258fd2cb | 5340 | listfile = Fexpand_file_name (Vauto_save_list_file_name, Qnil); |
0894672f GM |
5341 | |
5342 | /* Don't try to create the directory when shutting down Emacs, | |
5343 | because creating the directory might signal an error, and | |
5344 | that would leave Emacs in a strange state. */ | |
5345 | if (!NILP (Vrun_hooks)) | |
5346 | { | |
5347 | Lisp_Object dir; | |
d57563b6 RS |
5348 | dir = Qnil; |
5349 | GCPRO2 (dir, listfile); | |
0894672f GM |
5350 | dir = Ffile_name_directory (listfile); |
5351 | if (NILP (Ffile_directory_p (dir))) | |
5794dd61 RS |
5352 | internal_condition_case_1 (do_auto_save_make_dir, |
5353 | dir, Fcons (Fcons (Qfile_error, Qnil), Qnil), | |
5354 | do_auto_save_eh); | |
d57563b6 | 5355 | UNGCPRO; |
0894672f | 5356 | } |
efdc16c9 | 5357 | |
d5db4077 | 5358 | stream = fopen (SDATA (listfile), "w"); |
1b335d29 | 5359 | } |
199607e4 | 5360 | |
fff7e982 KS |
5361 | record_unwind_protect (do_auto_save_unwind, |
5362 | make_save_value (stream, 0)); | |
a8c828be RS |
5363 | record_unwind_protect (do_auto_save_unwind_1, |
5364 | make_number (minibuffer_auto_raise)); | |
5365 | minibuffer_auto_raise = 0; | |
3be3c08e | 5366 | auto_saving = 1; |
ca730bf0 | 5367 | auto_save_error_occurred = 0; |
3be3c08e | 5368 | |
6b61353c KH |
5369 | /* On first pass, save all files that don't have handlers. |
5370 | On second pass, save all files that do have handlers. | |
5371 | ||
5372 | If Emacs is crashing, the handlers may tweak what is causing | |
5373 | Emacs to crash in the first place, and it would be a shame if | |
5374 | Emacs failed to autosave perfectly ordinary files because it | |
5375 | couldn't handle some ange-ftp'd file. */ | |
5376 | ||
f14b1c68 | 5377 | for (do_handled_files = 0; do_handled_files < 2; do_handled_files++) |
8e50cc2d | 5378 | for (tail = Vbuffer_alist; CONSP (tail); tail = XCDR (tail)) |
f14b1c68 | 5379 | { |
03699b14 | 5380 | buf = XCDR (XCAR (tail)); |
f14b1c68 | 5381 | b = XBUFFER (buf); |
199607e4 | 5382 | |
e54d3b5d | 5383 | /* Record all the buffers that have auto save mode |
258fd2cb RS |
5384 | in the special file that lists them. For each of these buffers, |
5385 | Record visited name (if any) and auto save name. */ | |
93c30b5f | 5386 | if (STRINGP (b->auto_save_file_name) |
1b335d29 | 5387 | && stream != NULL && do_handled_files == 0) |
e54d3b5d | 5388 | { |
aab12958 | 5389 | BLOCK_INPUT; |
258fd2cb RS |
5390 | if (!NILP (b->filename)) |
5391 | { | |
d5db4077 KR |
5392 | fwrite (SDATA (b->filename), 1, |
5393 | SBYTES (b->filename), stream); | |
258fd2cb | 5394 | } |
1b335d29 | 5395 | putc ('\n', stream); |
d5db4077 KR |
5396 | fwrite (SDATA (b->auto_save_file_name), 1, |
5397 | SBYTES (b->auto_save_file_name), stream); | |
1b335d29 | 5398 | putc ('\n', stream); |
aab12958 | 5399 | UNBLOCK_INPUT; |
e54d3b5d | 5400 | } |
17857782 | 5401 | |
f14b1c68 JB |
5402 | if (!NILP (current_only) |
5403 | && b != current_buffer) | |
5404 | continue; | |
e54d3b5d | 5405 | |
95385625 RS |
5406 | /* Don't auto-save indirect buffers. |
5407 | The base buffer takes care of it. */ | |
5408 | if (b->base_buffer) | |
5409 | continue; | |
5410 | ||
f14b1c68 JB |
5411 | /* Check for auto save enabled |
5412 | and file changed since last auto save | |
5413 | and file changed since last real save. */ | |
93c30b5f | 5414 | if (STRINGP (b->auto_save_file_name) |
95385625 | 5415 | && BUF_SAVE_MODIFF (b) < BUF_MODIFF (b) |
0b5397c2 | 5416 | && BUF_AUTOSAVE_MODIFF (b) < BUF_MODIFF (b) |
82c2d839 | 5417 | /* -1 means we've turned off autosaving for a while--see below. */ |
090101cf | 5418 | && XINT (b->save_length) >= 0 |
f14b1c68 | 5419 | && (do_handled_files |
49307295 KH |
5420 | || NILP (Ffind_file_name_handler (b->auto_save_file_name, |
5421 | Qwrite_region)))) | |
f14b1c68 | 5422 | { |
b60247d9 RS |
5423 | EMACS_TIME before_time, after_time; |
5424 | ||
5425 | EMACS_GET_TIME (before_time); | |
5426 | ||
5427 | /* If we had a failure, don't try again for 20 minutes. */ | |
5428 | if (b->auto_save_failure_time >= 0 | |
5429 | && EMACS_SECS (before_time) - b->auto_save_failure_time < 1200) | |
5430 | continue; | |
5431 | ||
090101cf CY |
5432 | set_buffer_internal (b); |
5433 | if (NILP (Vauto_save_include_big_deletions) | |
4be941e3 RS |
5434 | && (XFASTINT (b->save_length) * 10 |
5435 | > (BUF_Z (b) - BUF_BEG (b)) * 13) | |
f14b1c68 JB |
5436 | /* A short file is likely to change a large fraction; |
5437 | spare the user annoying messages. */ | |
5438 | && XFASTINT (b->save_length) > 5000 | |
5439 | /* These messages are frequent and annoying for `*mail*'. */ | |
5440 | && !EQ (b->filename, Qnil) | |
5441 | && NILP (no_message)) | |
5442 | { | |
5443 | /* It has shrunk too much; turn off auto-saving here. */ | |
a8c828be | 5444 | minibuffer_auto_raise = orig_minibuffer_auto_raise; |
fd91d0d4 | 5445 | message_with_string ("Buffer %s has shrunk a lot; auto save disabled in that buffer until next real save", |
60d67b83 | 5446 | b->name, 1); |
a8c828be | 5447 | minibuffer_auto_raise = 0; |
82c2d839 RS |
5448 | /* Turn off auto-saving until there's a real save, |
5449 | and prevent any more warnings. */ | |
46283abe | 5450 | XSETINT (b->save_length, -1); |
f14b1c68 JB |
5451 | Fsleep_for (make_number (1), Qnil); |
5452 | continue; | |
5453 | } | |
f14b1c68 JB |
5454 | if (!auto_saved && NILP (no_message)) |
5455 | message1 ("Auto-saving..."); | |
5456 | internal_condition_case (auto_save_1, Qt, auto_save_error); | |
5457 | auto_saved++; | |
0b5397c2 | 5458 | BUF_AUTOSAVE_MODIFF (b) = BUF_MODIFF (b); |
090101cf | 5459 | XSETFASTINT (current_buffer->save_length, Z - BEG); |
f14b1c68 | 5460 | set_buffer_internal (old); |
b60247d9 RS |
5461 | |
5462 | EMACS_GET_TIME (after_time); | |
5463 | ||
5464 | /* If auto-save took more than 60 seconds, | |
5465 | assume it was an NFS failure that got a timeout. */ | |
5466 | if (EMACS_SECS (after_time) - EMACS_SECS (before_time) > 60) | |
5467 | b->auto_save_failure_time = EMACS_SECS (after_time); | |
f14b1c68 JB |
5468 | } |
5469 | } | |
570d7624 | 5470 | |
b67f2ca5 RS |
5471 | /* Prevent another auto save till enough input events come in. */ |
5472 | record_auto_save (); | |
570d7624 | 5473 | |
17857782 | 5474 | if (auto_saved && NILP (no_message)) |
f05b275b | 5475 | { |
5794dd61 | 5476 | if (old_message_p) |
31f3d831 | 5477 | { |
5794dd61 RS |
5478 | /* If we are going to restore an old message, |
5479 | give time to read ours. */ | |
83f8d903 | 5480 | sit_for (make_number (1), 0, 0); |
c71106e5 | 5481 | restore_message (); |
31f3d831 | 5482 | } |
ca730bf0 | 5483 | else if (!auto_save_error_occurred) |
31e31a15 CY |
5484 | /* Don't overwrite the error message if an error occurred. |
5485 | If we displayed a message and then restored a state | |
5794dd61 | 5486 | with no message, leave a "done" message on the screen. */ |
f05b275b KH |
5487 | message1 ("Auto-saving...done"); |
5488 | } | |
570d7624 | 5489 | |
ff4c9993 RS |
5490 | Vquit_flag = oquit; |
5491 | ||
5794dd61 | 5492 | /* This restores the message-stack status. */ |
e54d3b5d | 5493 | unbind_to (count, Qnil); |
570d7624 JB |
5494 | return Qnil; |
5495 | } | |
5496 | ||
5497 | DEFUN ("set-buffer-auto-saved", Fset_buffer_auto_saved, | |
8c1a1077 PJ |
5498 | Sset_buffer_auto_saved, 0, 0, 0, |
5499 | doc: /* Mark current buffer as auto-saved with its current text. | |
5500 | No auto-save file will be written until the buffer changes again. */) | |
5842a27b | 5501 | (void) |
570d7624 | 5502 | { |
0b5397c2 SM |
5503 | /* FIXME: This should not be called in indirect buffers, since |
5504 | they're not autosaved. */ | |
5505 | BUF_AUTOSAVE_MODIFF (current_buffer) = MODIFF; | |
090101cf | 5506 | XSETFASTINT (current_buffer->save_length, Z - BEG); |
b60247d9 RS |
5507 | current_buffer->auto_save_failure_time = -1; |
5508 | return Qnil; | |
5509 | } | |
5510 | ||
5511 | DEFUN ("clear-buffer-auto-save-failure", Fclear_buffer_auto_save_failure, | |
8c1a1077 PJ |
5512 | Sclear_buffer_auto_save_failure, 0, 0, 0, |
5513 | doc: /* Clear any record of a recent auto-save failure in the current buffer. */) | |
5842a27b | 5514 | (void) |
b60247d9 RS |
5515 | { |
5516 | current_buffer->auto_save_failure_time = -1; | |
570d7624 JB |
5517 | return Qnil; |
5518 | } | |
5519 | ||
5520 | DEFUN ("recent-auto-save-p", Frecent_auto_save_p, Srecent_auto_save_p, | |
8c1a1077 | 5521 | 0, 0, 0, |
68780e2a RS |
5522 | doc: /* Return t if current buffer has been auto-saved recently. |
5523 | More precisely, if it has been auto-saved since last read from or saved | |
5524 | in the visited file. If the buffer has no visited file, | |
5525 | then any auto-save counts as "recent". */) | |
5842a27b | 5526 | (void) |
570d7624 | 5527 | { |
0b5397c2 SM |
5528 | /* FIXME: maybe we should return nil for indirect buffers since |
5529 | they're never autosaved. */ | |
5530 | return (SAVE_MODIFF < BUF_AUTOSAVE_MODIFF (current_buffer) ? Qt : Qnil); | |
570d7624 JB |
5531 | } |
5532 | \f | |
5533 | /* Reading and completing file names */ | |
6e710ae5 | 5534 | |
88208bb8 JD |
5535 | DEFUN ("next-read-file-uses-dialog-p", Fnext_read_file_uses_dialog_p, |
5536 | Snext_read_file_uses_dialog_p, 0, 0, 0, | |
5537 | doc: /* Return t if a call to `read-file-name' will use a dialog. | |
5538 | The return value is only relevant for a call to `read-file-name' that happens | |
1a0de25c | 5539 | before any other event (mouse or keypress) is handled. */) |
5842a27b | 5540 | (void) |
88208bb8 | 5541 | { |
9e2a2647 | 5542 | #if defined (USE_MOTIF) || defined (HAVE_NTGUI) || defined (USE_GTK) |
88208bb8 JD |
5543 | if ((NILP (last_nonmenu_event) || CONSP (last_nonmenu_event)) |
5544 | && use_dialog_box | |
5545 | && use_file_dialog | |
5546 | && have_menus_p ()) | |
5547 | return Qt; | |
5548 | #endif | |
5549 | return Qnil; | |
5550 | } | |
d4a42098 | 5551 | |
dbd50d4b | 5552 | Lisp_Object |
971de7fb | 5553 | Fread_file_name (Lisp_Object prompt, Lisp_Object dir, Lisp_Object default_filename, Lisp_Object mustmatch, Lisp_Object initial, Lisp_Object predicate) |
570d7624 | 5554 | { |
570d7624 | 5555 | struct gcpro gcpro1, gcpro2; |
dbd50d4b | 5556 | Lisp_Object args[7]; |
a79485af | 5557 | |
71e1f69d | 5558 | GCPRO1 (default_filename); |
dbd50d4b SM |
5559 | args[0] = intern ("read-file-name"); |
5560 | args[1] = prompt; | |
5561 | args[2] = dir; | |
5562 | args[3] = default_filename; | |
5563 | args[4] = mustmatch; | |
5564 | args[5] = initial; | |
5565 | args[6] = predicate; | |
5566 | RETURN_UNGCPRO (Ffuncall (7, args)); | |
570d7624 | 5567 | } |
9c856db9 | 5568 | |
570d7624 | 5569 | \f |
dfcf069d | 5570 | void |
971de7fb | 5571 | syms_of_fileio (void) |
570d7624 | 5572 | { |
d67b4f80 DN |
5573 | Qoperations = intern_c_string ("operations"); |
5574 | Qexpand_file_name = intern_c_string ("expand-file-name"); | |
5575 | Qsubstitute_in_file_name = intern_c_string ("substitute-in-file-name"); | |
5576 | Qdirectory_file_name = intern_c_string ("directory-file-name"); | |
5577 | Qfile_name_directory = intern_c_string ("file-name-directory"); | |
5578 | Qfile_name_nondirectory = intern_c_string ("file-name-nondirectory"); | |
5579 | Qunhandled_file_name_directory = intern_c_string ("unhandled-file-name-directory"); | |
5580 | Qfile_name_as_directory = intern_c_string ("file-name-as-directory"); | |
5581 | Qcopy_file = intern_c_string ("copy-file"); | |
5582 | Qmake_directory_internal = intern_c_string ("make-directory-internal"); | |
5583 | Qmake_directory = intern_c_string ("make-directory"); | |
5584 | Qdelete_directory_internal = intern_c_string ("delete-directory-internal"); | |
5585 | Qdelete_file = intern_c_string ("delete-file"); | |
5586 | Qrename_file = intern_c_string ("rename-file"); | |
5587 | Qadd_name_to_file = intern_c_string ("add-name-to-file"); | |
5588 | Qmake_symbolic_link = intern_c_string ("make-symbolic-link"); | |
5589 | Qfile_exists_p = intern_c_string ("file-exists-p"); | |
5590 | Qfile_executable_p = intern_c_string ("file-executable-p"); | |
5591 | Qfile_readable_p = intern_c_string ("file-readable-p"); | |
5592 | Qfile_writable_p = intern_c_string ("file-writable-p"); | |
5593 | Qfile_symlink_p = intern_c_string ("file-symlink-p"); | |
5594 | Qaccess_file = intern_c_string ("access-file"); | |
5595 | Qfile_directory_p = intern_c_string ("file-directory-p"); | |
5596 | Qfile_regular_p = intern_c_string ("file-regular-p"); | |
5597 | Qfile_accessible_directory_p = intern_c_string ("file-accessible-directory-p"); | |
5598 | Qfile_modes = intern_c_string ("file-modes"); | |
5599 | Qset_file_modes = intern_c_string ("set-file-modes"); | |
5600 | Qset_file_times = intern_c_string ("set-file-times"); | |
574c05e2 KK |
5601 | Qfile_selinux_context = intern_c_string("file-selinux-context"); |
5602 | Qset_file_selinux_context = intern_c_string("set-file-selinux-context"); | |
d67b4f80 DN |
5603 | Qfile_newer_than_file_p = intern_c_string ("file-newer-than-file-p"); |
5604 | Qinsert_file_contents = intern_c_string ("insert-file-contents"); | |
5605 | Qwrite_region = intern_c_string ("write-region"); | |
5606 | Qverify_visited_file_modtime = intern_c_string ("verify-visited-file-modtime"); | |
5607 | Qset_visited_file_modtime = intern_c_string ("set-visited-file-modtime"); | |
5608 | Qauto_save_coding = intern_c_string ("auto-save-coding"); | |
32f4334d | 5609 | |
f6c9b683 | 5610 | staticpro (&Qoperations); |
642ef245 | 5611 | staticpro (&Qexpand_file_name); |
273e0829 | 5612 | staticpro (&Qsubstitute_in_file_name); |
642ef245 JB |
5613 | staticpro (&Qdirectory_file_name); |
5614 | staticpro (&Qfile_name_directory); | |
5615 | staticpro (&Qfile_name_nondirectory); | |
5616 | staticpro (&Qunhandled_file_name_directory); | |
5617 | staticpro (&Qfile_name_as_directory); | |
15c65264 | 5618 | staticpro (&Qcopy_file); |
c34b559d | 5619 | staticpro (&Qmake_directory_internal); |
b272d624 | 5620 | staticpro (&Qmake_directory); |
9d8f3bd9 | 5621 | staticpro (&Qdelete_directory_internal); |
15c65264 RS |
5622 | staticpro (&Qdelete_file); |
5623 | staticpro (&Qrename_file); | |
5624 | staticpro (&Qadd_name_to_file); | |
5625 | staticpro (&Qmake_symbolic_link); | |
5626 | staticpro (&Qfile_exists_p); | |
5627 | staticpro (&Qfile_executable_p); | |
5628 | staticpro (&Qfile_readable_p); | |
15c65264 | 5629 | staticpro (&Qfile_writable_p); |
1f8653eb RS |
5630 | staticpro (&Qaccess_file); |
5631 | staticpro (&Qfile_symlink_p); | |
15c65264 | 5632 | staticpro (&Qfile_directory_p); |
adedc71d | 5633 | staticpro (&Qfile_regular_p); |
15c65264 RS |
5634 | staticpro (&Qfile_accessible_directory_p); |
5635 | staticpro (&Qfile_modes); | |
5636 | staticpro (&Qset_file_modes); | |
819da85b | 5637 | staticpro (&Qset_file_times); |
574c05e2 KK |
5638 | staticpro (&Qfile_selinux_context); |
5639 | staticpro (&Qset_file_selinux_context); | |
15c65264 RS |
5640 | staticpro (&Qfile_newer_than_file_p); |
5641 | staticpro (&Qinsert_file_contents); | |
5642 | staticpro (&Qwrite_region); | |
5643 | staticpro (&Qverify_visited_file_modtime); | |
0a61794b | 5644 | staticpro (&Qset_visited_file_modtime); |
356a6224 | 5645 | staticpro (&Qauto_save_coding); |
642ef245 | 5646 | |
d67b4f80 | 5647 | Qfile_name_history = intern_c_string ("file-name-history"); |
642ef245 | 5648 | Fset (Qfile_name_history, Qnil); |
15c65264 RS |
5649 | staticpro (&Qfile_name_history); |
5650 | ||
d67b4f80 | 5651 | Qfile_error = intern_c_string ("file-error"); |
570d7624 | 5652 | staticpro (&Qfile_error); |
d67b4f80 | 5653 | Qfile_already_exists = intern_c_string ("file-already-exists"); |
570d7624 | 5654 | staticpro (&Qfile_already_exists); |
d67b4f80 | 5655 | Qfile_date_error = intern_c_string ("file-date-error"); |
c0b7b21c | 5656 | staticpro (&Qfile_date_error); |
d67b4f80 | 5657 | Qexcl = intern_c_string ("excl"); |
505ab9bc | 5658 | staticpro (&Qexcl); |
570d7624 | 5659 | |
5e570b75 | 5660 | #ifdef DOS_NT |
d67b4f80 | 5661 | Qfind_buffer_file_type = intern_c_string ("find-buffer-file-type"); |
4c3c22f3 | 5662 | staticpro (&Qfind_buffer_file_type); |
5e570b75 | 5663 | #endif /* DOS_NT */ |
4c3c22f3 | 5664 | |
b1d1b865 | 5665 | DEFVAR_LISP ("file-name-coding-system", &Vfile_name_coding_system, |
8c1a1077 | 5666 | doc: /* *Coding system for encoding file names. |
346ebf53 | 5667 | If it is nil, `default-file-name-coding-system' (which see) is used. */); |
b1d1b865 RS |
5668 | Vfile_name_coding_system = Qnil; |
5669 | ||
cd913586 KH |
5670 | DEFVAR_LISP ("default-file-name-coding-system", |
5671 | &Vdefault_file_name_coding_system, | |
8c1a1077 | 5672 | doc: /* Default coding system for encoding file names. |
346ebf53 | 5673 | This variable is used only when `file-name-coding-system' is nil. |
8c1a1077 | 5674 | |
346ebf53 | 5675 | This variable is set/changed by the command `set-language-environment'. |
8c1a1077 | 5676 | User should not set this variable manually, |
346ebf53 | 5677 | instead use `file-name-coding-system' to get a constant encoding |
8c1a1077 | 5678 | of file names regardless of the current language environment. */); |
cd913586 KH |
5679 | Vdefault_file_name_coding_system = Qnil; |
5680 | ||
d67b4f80 | 5681 | Qformat_decode = intern_c_string ("format-decode"); |
0d420e88 | 5682 | staticpro (&Qformat_decode); |
d67b4f80 | 5683 | Qformat_annotate_function = intern_c_string ("format-annotate-function"); |
0d420e88 | 5684 | staticpro (&Qformat_annotate_function); |
d67b4f80 | 5685 | Qafter_insert_file_set_coding = intern_c_string ("after-insert-file-set-coding"); |
2080470e | 5686 | staticpro (&Qafter_insert_file_set_coding); |
efdc16c9 | 5687 | |
d67b4f80 | 5688 | Qcar_less_than_car = intern_c_string ("car-less-than-car"); |
d6a3cc15 RS |
5689 | staticpro (&Qcar_less_than_car); |
5690 | ||
570d7624 | 5691 | Fput (Qfile_error, Qerror_conditions, |
d67b4f80 | 5692 | Fpurecopy (list2 (Qfile_error, Qerror))); |
570d7624 | 5693 | Fput (Qfile_error, Qerror_message, |
d67b4f80 | 5694 | make_pure_c_string ("File error")); |
570d7624 JB |
5695 | |
5696 | Fput (Qfile_already_exists, Qerror_conditions, | |
d67b4f80 | 5697 | Fpurecopy (list3 (Qfile_already_exists, Qfile_error, Qerror))); |
570d7624 | 5698 | Fput (Qfile_already_exists, Qerror_message, |
d67b4f80 | 5699 | make_pure_c_string ("File already exists")); |
570d7624 | 5700 | |
c0b7b21c | 5701 | Fput (Qfile_date_error, Qerror_conditions, |
d67b4f80 | 5702 | Fpurecopy (list3 (Qfile_date_error, Qfile_error, Qerror))); |
c0b7b21c | 5703 | Fput (Qfile_date_error, Qerror_message, |
d67b4f80 | 5704 | make_pure_c_string ("Cannot set file date")); |
c0b7b21c | 5705 | |
1d1826db | 5706 | DEFVAR_LISP ("file-name-handler-alist", &Vfile_name_handler_alist, |
8c1a1077 PJ |
5707 | doc: /* *Alist of elements (REGEXP . HANDLER) for file names handled specially. |
5708 | If a file name matches REGEXP, then all I/O on that file is done by calling | |
5709 | HANDLER. | |
5710 | ||
5711 | The first argument given to HANDLER is the name of the I/O primitive | |
5712 | to be handled; the remaining arguments are the arguments that were | |
5713 | passed to that primitive. For example, if you do | |
5714 | (file-exists-p FILENAME) | |
5715 | and FILENAME is handled by HANDLER, then HANDLER is called like this: | |
5716 | (funcall HANDLER 'file-exists-p FILENAME) | |
5717 | The function `find-file-name-handler' checks this list for a handler | |
5718 | for its argument. */); | |
09121adc RS |
5719 | Vfile_name_handler_alist = Qnil; |
5720 | ||
0414b394 KH |
5721 | DEFVAR_LISP ("set-auto-coding-function", |
5722 | &Vset_auto_coding_function, | |
8c1a1077 PJ |
5723 | doc: /* If non-nil, a function to call to decide a coding system of file. |
5724 | Two arguments are passed to this function: the file name | |
5725 | and the length of a file contents following the point. | |
5726 | This function should return a coding system to decode the file contents. | |
5727 | It should check the file name against `auto-coding-alist'. | |
5728 | If no coding system is decided, it should check a coding system | |
5729 | specified in the heading lines with the format: | |
5730 | -*- ... coding: CODING-SYSTEM; ... -*- | |
5731 | or local variable spec of the tailing lines with `coding:' tag. */); | |
0414b394 | 5732 | Vset_auto_coding_function = Qnil; |
c9e82392 | 5733 | |
d6a3cc15 | 5734 | DEFVAR_LISP ("after-insert-file-functions", &Vafter_insert_file_functions, |
8c1a1077 | 5735 | doc: /* A list of functions to be called at the end of `insert-file-contents'. |
0cf9f5b5 RS |
5736 | Each is passed one argument, the number of characters inserted, |
5737 | with point at the start of the inserted text. Each function | |
5738 | should leave point the same, and return the new character count. | |
cf6d2357 RS |
5739 | If `insert-file-contents' is intercepted by a handler from |
5740 | `file-name-handler-alist', that handler is responsible for calling the | |
5741 | functions in `after-insert-file-functions' if appropriate. */); | |
d6a3cc15 RS |
5742 | Vafter_insert_file_functions = Qnil; |
5743 | ||
5744 | DEFVAR_LISP ("write-region-annotate-functions", &Vwrite_region_annotate_functions, | |
8c1a1077 PJ |
5745 | doc: /* A list of functions to be called at the start of `write-region'. |
5746 | Each is passed two arguments, START and END as for `write-region'. | |
5747 | These are usually two numbers but not always; see the documentation | |
5748 | for `write-region'. The function should return a list of pairs | |
5749 | of the form (POSITION . STRING), consisting of strings to be effectively | |
5750 | inserted at the specified positions of the file being written (1 means to | |
5751 | insert before the first byte written). The POSITIONs must be sorted into | |
67fbc0cb CY |
5752 | increasing order. |
5753 | ||
5754 | If there are several annotation functions, the lists returned by these | |
5755 | functions are merged destructively. As each annotation function runs, | |
5756 | the variable `write-region-annotations-so-far' contains a list of all | |
5757 | annotations returned by previous annotation functions. | |
5758 | ||
5759 | An annotation function can return with a different buffer current. | |
5760 | Doing so removes the annotations returned by previous functions, and | |
5761 | resets START and END to `point-min' and `point-max' of the new buffer. | |
5762 | ||
5763 | After `write-region' completes, Emacs calls the function stored in | |
5764 | `write-region-post-annotation-function', once for each buffer that was | |
5765 | current when building the annotations (i.e., at least once), with that | |
5766 | buffer current. */); | |
d6a3cc15 | 5767 | Vwrite_region_annotate_functions = Qnil; |
bd235610 SM |
5768 | staticpro (&Qwrite_region_annotate_functions); |
5769 | Qwrite_region_annotate_functions | |
d67b4f80 | 5770 | = intern_c_string ("write-region-annotate-functions"); |
d6a3cc15 | 5771 | |
67fbc0cb CY |
5772 | DEFVAR_LISP ("write-region-post-annotation-function", |
5773 | &Vwrite_region_post_annotation_function, | |
5774 | doc: /* Function to call after `write-region' completes. | |
5775 | The function is called with no arguments. If one or more of the | |
5776 | annotation functions in `write-region-annotate-functions' changed the | |
5777 | current buffer, the function stored in this variable is called for | |
5778 | each of those additional buffers as well, in addition to the original | |
5779 | buffer. The relevant buffer is current during each function call. */); | |
5780 | Vwrite_region_post_annotation_function = Qnil; | |
5781 | staticpro (&Vwrite_region_annotation_buffers); | |
5782 | ||
6fc6f94b RS |
5783 | DEFVAR_LISP ("write-region-annotations-so-far", |
5784 | &Vwrite_region_annotations_so_far, | |
8c1a1077 PJ |
5785 | doc: /* When an annotation function is called, this holds the previous annotations. |
5786 | These are the annotations made by other annotation functions | |
5787 | that were already called. See also `write-region-annotate-functions'. */); | |
6fc6f94b RS |
5788 | Vwrite_region_annotations_so_far = Qnil; |
5789 | ||
82c2d839 | 5790 | DEFVAR_LISP ("inhibit-file-name-handlers", &Vinhibit_file_name_handlers, |
8c1a1077 PJ |
5791 | doc: /* A list of file name handlers that temporarily should not be used. |
5792 | This applies only to the operation `inhibit-file-name-operation'. */); | |
82c2d839 RS |
5793 | Vinhibit_file_name_handlers = Qnil; |
5794 | ||
a65970a0 | 5795 | DEFVAR_LISP ("inhibit-file-name-operation", &Vinhibit_file_name_operation, |
8c1a1077 | 5796 | doc: /* The operation for which `inhibit-file-name-handlers' is applicable. */); |
a65970a0 RS |
5797 | Vinhibit_file_name_operation = Qnil; |
5798 | ||
e54d3b5d | 5799 | DEFVAR_LISP ("auto-save-list-file-name", &Vauto_save_list_file_name, |
8c1a1077 PJ |
5800 | doc: /* File name in which we write a list of all auto save file names. |
5801 | This variable is initialized automatically from `auto-save-list-file-prefix' | |
5802 | shortly after Emacs reads your `.emacs' file, if you have not yet given it | |
5803 | a non-nil value. */); | |
e54d3b5d RS |
5804 | Vauto_save_list_file_name = Qnil; |
5805 | ||
699b53bc CY |
5806 | DEFVAR_LISP ("auto-save-visited-file-name", &Vauto_save_visited_file_name, |
5807 | doc: /* Non-nil says auto-save a buffer in the file it is visiting, when practical. | |
5808 | Normally auto-save files are written under other names. */); | |
5809 | Vauto_save_visited_file_name = Qnil; | |
5810 | ||
090101cf CY |
5811 | DEFVAR_LISP ("auto-save-include-big-deletions", &Vauto_save_include_big_deletions, |
5812 | doc: /* If non-nil, auto-save even if a large part of the text is deleted. | |
5813 | If nil, deleting a substantial portion of the text disables auto-save | |
5814 | in the buffer; this is the default behavior, because the auto-save | |
5815 | file is usually more useful if it contains the deleted text. */); | |
5816 | Vauto_save_include_big_deletions = Qnil; | |
5817 | ||
ccf61795 RF |
5818 | #ifdef HAVE_FSYNC |
5819 | DEFVAR_BOOL ("write-region-inhibit-fsync", &write_region_inhibit_fsync, | |
e3f509dd RF |
5820 | doc: /* *Non-nil means don't call fsync in `write-region'. |
5821 | This variable affects calls to `write-region' as well as save commands. | |
5822 | A non-nil value may result in data loss! */); | |
ccf61795 RF |
5823 | write_region_inhibit_fsync = 0; |
5824 | #endif | |
5825 | ||
6cf29fe8 JR |
5826 | DEFVAR_BOOL ("delete-by-moving-to-trash", &delete_by_moving_to_trash, |
5827 | doc: /* Specifies whether to use the system's trash can. | |
f1a5d776 CY |
5828 | When non-nil, certain file deletion commands use the function |
5829 | `move-file-to-trash' instead of deleting files outright. | |
5830 | This includes interactive calls to `delete-file' and | |
5831 | `delete-directory' and the Dired deletion commands. */); | |
6cf29fe8 | 5832 | delete_by_moving_to_trash = 0; |
d67b4f80 DN |
5833 | Qdelete_by_moving_to_trash = intern_c_string ("delete-by-moving-to-trash"); |
5834 | Qmove_file_to_trash = intern_c_string ("move-file-to-trash"); | |
6cf29fe8 | 5835 | staticpro (&Qmove_file_to_trash); |
8719abec CY |
5836 | Qcopy_directory = intern_c_string ("copy-directory"); |
5837 | staticpro (&Qcopy_directory); | |
5838 | Qdelete_directory = intern_c_string ("delete-directory"); | |
5839 | staticpro (&Qdelete_directory); | |
6cf29fe8 | 5840 | |
642ef245 | 5841 | defsubr (&Sfind_file_name_handler); |
570d7624 JB |
5842 | defsubr (&Sfile_name_directory); |
5843 | defsubr (&Sfile_name_nondirectory); | |
642ef245 | 5844 | defsubr (&Sunhandled_file_name_directory); |
570d7624 JB |
5845 | defsubr (&Sfile_name_as_directory); |
5846 | defsubr (&Sdirectory_file_name); | |
5847 | defsubr (&Smake_temp_name); | |
5848 | defsubr (&Sexpand_file_name); | |
5849 | defsubr (&Ssubstitute_in_file_name); | |
5850 | defsubr (&Scopy_file); | |
9bbe01fb | 5851 | defsubr (&Smake_directory_internal); |
9d8f3bd9 | 5852 | defsubr (&Sdelete_directory_internal); |
570d7624 JB |
5853 | defsubr (&Sdelete_file); |
5854 | defsubr (&Srename_file); | |
5855 | defsubr (&Sadd_name_to_file); | |
570d7624 | 5856 | defsubr (&Smake_symbolic_link); |
570d7624 JB |
5857 | defsubr (&Sfile_name_absolute_p); |
5858 | defsubr (&Sfile_exists_p); | |
5859 | defsubr (&Sfile_executable_p); | |
5860 | defsubr (&Sfile_readable_p); | |
5861 | defsubr (&Sfile_writable_p); | |
1f8653eb | 5862 | defsubr (&Saccess_file); |
570d7624 JB |
5863 | defsubr (&Sfile_symlink_p); |
5864 | defsubr (&Sfile_directory_p); | |
b72dea2a | 5865 | defsubr (&Sfile_accessible_directory_p); |
f793dc6c | 5866 | defsubr (&Sfile_regular_p); |
570d7624 JB |
5867 | defsubr (&Sfile_modes); |
5868 | defsubr (&Sset_file_modes); | |
819da85b | 5869 | defsubr (&Sset_file_times); |
574c05e2 KK |
5870 | defsubr (&Sfile_selinux_context); |
5871 | defsubr (&Sset_file_selinux_context); | |
c24e9a53 RS |
5872 | defsubr (&Sset_default_file_modes); |
5873 | defsubr (&Sdefault_file_modes); | |
570d7624 JB |
5874 | defsubr (&Sfile_newer_than_file_p); |
5875 | defsubr (&Sinsert_file_contents); | |
5876 | defsubr (&Swrite_region); | |
d6a3cc15 | 5877 | defsubr (&Scar_less_than_car); |
570d7624 JB |
5878 | defsubr (&Sverify_visited_file_modtime); |
5879 | defsubr (&Sclear_visited_file_modtime); | |
f5d5eccf | 5880 | defsubr (&Svisited_file_modtime); |
570d7624 JB |
5881 | defsubr (&Sset_visited_file_modtime); |
5882 | defsubr (&Sdo_auto_save); | |
5883 | defsubr (&Sset_buffer_auto_saved); | |
b60247d9 | 5884 | defsubr (&Sclear_buffer_auto_save_failure); |
570d7624 JB |
5885 | defsubr (&Srecent_auto_save_p); |
5886 | ||
88208bb8 | 5887 | defsubr (&Snext_read_file_uses_dialog_p); |
85ffea93 | 5888 | |
697c17a2 | 5889 | #ifdef HAVE_SYNC |
85ffea93 | 5890 | defsubr (&Sunix_sync); |
483a2e10 | 5891 | #endif |
570d7624 | 5892 | } |
6b61353c KH |
5893 | |
5894 | /* arch-tag: 64ba3fd7-f844-4fb2-ba4b-427eb928786c | |
5895 | (do not change this comment) */ |