Commit | Line | Data |
---|---|---|
570d7624 | 1 | /* File IO for GNU Emacs. |
0b5538bd TTN |
2 | Copyright (C) 1985, 1986, 1987, 1988, 1993, 1994, 1995, 1996, |
3 | 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, | |
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 RS |
85 | #ifdef DOS_NT |
86 | #define CORRECT_DIR_SEPS(s) \ | |
87 | do { if ('/' == DIRECTORY_SEP) dostounix_filename (s); \ | |
88 | else unixtodos_filename (s); \ | |
89 | } while (0) | |
90 | /* On Windows, drive letters must be alphabetic - on DOS, the Netware | |
91 | redirector allows the six letters between 'Z' and 'a' as well. */ | |
92 | #ifdef MSDOS | |
93 | #define IS_DRIVE(x) ((x) >= 'A' && (x) <= 'z') | |
94 | #endif | |
95 | #ifdef WINDOWSNT | |
96 | #define IS_DRIVE(x) isalpha (x) | |
97 | #endif | |
f54b565c MB |
98 | /* Need to lower-case the drive letter, or else expanded |
99 | filenames will sometimes compare inequal, because | |
100 | `expand-file-name' doesn't always down-case the drive letter. */ | |
101 | #define DRIVE_LETTER(x) (tolower (x)) | |
199607e4 RS |
102 | #endif |
103 | ||
de5bf5d3 | 104 | #include "systime.h" |
570d7624 JB |
105 | |
106 | #ifdef HPUX | |
107 | #include <netio.h> | |
47e7b9e5 | 108 | #endif |
570d7624 | 109 | |
9c856db9 GM |
110 | #include "commands.h" |
111 | extern int use_dialog_box; | |
6b61353c | 112 | extern int use_file_dialog; |
9c856db9 | 113 | |
570d7624 JB |
114 | #ifndef O_WRONLY |
115 | #define O_WRONLY 1 | |
116 | #endif | |
117 | ||
4018b5ef RS |
118 | #ifndef O_RDONLY |
119 | #define O_RDONLY 0 | |
120 | #endif | |
121 | ||
8f6df9b5 EZ |
122 | #ifndef S_ISLNK |
123 | # define lstat stat | |
124 | #endif | |
125 | ||
c1558952 TTN |
126 | #ifndef FILE_SYSTEM_CASE |
127 | #define FILE_SYSTEM_CASE(filename) (filename) | |
128 | #endif | |
129 | ||
570d7624 JB |
130 | /* Nonzero during writing of auto-save files */ |
131 | int auto_saving; | |
132 | ||
133 | /* Set by auto_save_1 to mode of original file so Fwrite_region will create | |
134 | a new file with the same mode as the original */ | |
135 | int auto_save_mode_bits; | |
136 | ||
ca730bf0 CY |
137 | /* Set by auto_save_1 if an error occurred during the last auto-save. */ |
138 | int auto_save_error_occurred; | |
139 | ||
356a6224 KH |
140 | /* The symbol bound to coding-system-for-read when |
141 | insert-file-contents is called for recovering a file. This is not | |
142 | an actual coding system name, but just an indicator to tell | |
143 | insert-file-contents to use `emacs-mule' with a special flag for | |
144 | auto saving and recovering a file. */ | |
145 | Lisp_Object Qauto_save_coding; | |
146 | ||
b1d1b865 RS |
147 | /* Coding system for file names, or nil if none. */ |
148 | Lisp_Object Vfile_name_coding_system; | |
149 | ||
cd913586 KH |
150 | /* Coding system for file names used only when |
151 | Vfile_name_coding_system is nil. */ | |
152 | Lisp_Object Vdefault_file_name_coding_system; | |
153 | ||
199607e4 | 154 | /* Alist of elements (REGEXP . HANDLER) for file names |
32f4334d RS |
155 | whose I/O is done with a special handler. */ |
156 | Lisp_Object Vfile_name_handler_alist; | |
157 | ||
f6c9b683 RS |
158 | /* Property name of a file name handler, |
159 | which gives a list of operations it handles.. */ | |
160 | Lisp_Object Qoperations; | |
161 | ||
0d420e88 BG |
162 | /* Lisp functions for translating file formats */ |
163 | Lisp_Object Qformat_decode, Qformat_annotate_function; | |
164 | ||
c9e82392 | 165 | /* Function to be called to decide a coding system of a reading file. */ |
0414b394 | 166 | Lisp_Object Vset_auto_coding_function; |
c9e82392 | 167 | |
d6a3cc15 RS |
168 | /* Functions to be called to process text properties in inserted file. */ |
169 | Lisp_Object Vafter_insert_file_functions; | |
170 | ||
2080470e | 171 | /* Lisp function for setting buffer-file-coding-system and the |
b6426b03 | 172 | multibyteness of the current buffer after inserting a file. */ |
2080470e | 173 | Lisp_Object Qafter_insert_file_set_coding; |
b6426b03 | 174 | |
d6a3cc15 RS |
175 | /* Functions to be called to create text property annotations for file. */ |
176 | Lisp_Object Vwrite_region_annotate_functions; | |
bd235610 | 177 | Lisp_Object Qwrite_region_annotate_functions; |
67fbc0cb | 178 | Lisp_Object Vwrite_region_post_annotation_function; |
d6a3cc15 | 179 | |
6fc6f94b RS |
180 | /* During build_annotations, each time an annotation function is called, |
181 | this holds the annotations made by the previous functions. */ | |
182 | Lisp_Object Vwrite_region_annotations_so_far; | |
183 | ||
67fbc0cb CY |
184 | /* Each time an annotation function changes the buffer, the new buffer |
185 | is added here. */ | |
186 | Lisp_Object Vwrite_region_annotation_buffers; | |
187 | ||
e54d3b5d RS |
188 | /* File name in which we write a list of all our auto save files. */ |
189 | Lisp_Object Vauto_save_list_file_name; | |
190 | ||
699b53bc CY |
191 | /* Whether or not files are auto-saved into themselves. */ |
192 | Lisp_Object Vauto_save_visited_file_name; | |
193 | ||
090101cf CY |
194 | /* Whether or not to continue auto-saving after a large deletion. */ |
195 | Lisp_Object Vauto_save_include_big_deletions; | |
196 | ||
199607e4 RS |
197 | /* On NT, specifies the directory separator character, used (eg.) when |
198 | expanding file names. This can be bound to / or \. */ | |
199 | Lisp_Object Vdirectory_sep_char; | |
200 | ||
ccf61795 RF |
201 | #ifdef HAVE_FSYNC |
202 | /* Nonzero means skip the call to fsync in Fwrite-region. */ | |
203 | int write_region_inhibit_fsync; | |
204 | #endif | |
205 | ||
6cf29fe8 | 206 | /* Non-zero means call move-file-to-trash in Fdelete_file or |
9d8f3bd9 | 207 | Fdelete_directory_internal. */ |
6cf29fe8 JR |
208 | int delete_by_moving_to_trash; |
209 | ||
d2b66acf GM |
210 | Lisp_Object Qdelete_by_moving_to_trash; |
211 | ||
6cf29fe8 JR |
212 | /* Lisp function for moving files to trash. */ |
213 | Lisp_Object Qmove_file_to_trash; | |
214 | ||
8719abec CY |
215 | /* Lisp function for recursively copying directories. */ |
216 | Lisp_Object Qcopy_directory; | |
217 | ||
218 | /* Lisp function for recursively deleting directories. */ | |
219 | Lisp_Object Qdelete_directory; | |
220 | ||
84f6296a RS |
221 | extern Lisp_Object Vuser_login_name; |
222 | ||
c1c4693e RS |
223 | #ifdef WINDOWSNT |
224 | extern Lisp_Object Vw32_get_true_file_attributes; | |
225 | #endif | |
226 | ||
84f6296a RS |
227 | extern int minibuf_level; |
228 | ||
a8c828be RS |
229 | extern int minibuffer_auto_raise; |
230 | ||
a65970a0 RS |
231 | /* These variables describe handlers that have "already" had a chance |
232 | to handle the current operation. | |
233 | ||
234 | Vinhibit_file_name_handlers is a list of file name handlers. | |
235 | Vinhibit_file_name_operation is the operation being handled. | |
236 | If we try to handle that operation, we ignore those handlers. */ | |
237 | ||
82c2d839 | 238 | static Lisp_Object Vinhibit_file_name_handlers; |
a65970a0 | 239 | static Lisp_Object Vinhibit_file_name_operation; |
82c2d839 | 240 | |
c0b7b21c | 241 | Lisp_Object Qfile_error, Qfile_already_exists, Qfile_date_error; |
505ab9bc | 242 | Lisp_Object Qexcl; |
15c65264 RS |
243 | Lisp_Object Qfile_name_history; |
244 | ||
d6a3cc15 RS |
245 | Lisp_Object Qcar_less_than_car; |
246 | ||
ce51c54c | 247 | static int a_write P_ ((int, Lisp_Object, int, int, |
b9013200 | 248 | Lisp_Object *, struct coding_system *)); |
ce51c54c KH |
249 | static int e_write P_ ((int, Lisp_Object, int, int, struct coding_system *)); |
250 | ||
ec7adf26 | 251 | \f |
5d01d666 | 252 | void |
570d7624 | 253 | report_file_error (string, data) |
19290c65 | 254 | const char *string; |
570d7624 JB |
255 | Lisp_Object data; |
256 | { | |
257 | Lisp_Object errstring; | |
505ab9bc | 258 | int errorno = errno; |
d7259fdb | 259 | char *str; |
570d7624 | 260 | |
ca9c0567 | 261 | synchronize_system_messages_locale (); |
d7259fdb KH |
262 | str = strerror (errorno); |
263 | errstring = code_convert_string_norecord (make_unibyte_string (str, | |
264 | strlen (str)), | |
68c45bf0 PE |
265 | Vlocale_coding_system, 0); |
266 | ||
570d7624 | 267 | while (1) |
505ab9bc RS |
268 | switch (errorno) |
269 | { | |
270 | case EEXIST: | |
24b1ddad | 271 | xsignal (Qfile_already_exists, Fcons (errstring, data)); |
505ab9bc RS |
272 | break; |
273 | default: | |
274 | /* System error messages are capitalized. Downcase the initial | |
39824137 EZ |
275 | unless it is followed by a slash. (The slash case caters to |
276 | error messages that begin with "I/O" or, in German, "E/A".) */ | |
d5443ffd KH |
277 | if (STRING_MULTIBYTE (errstring) |
278 | && ! EQ (Faref (errstring, make_number (1)), make_number ('/'))) | |
6c0969ca KH |
279 | { |
280 | int c; | |
281 | ||
282 | str = (char *) SDATA (errstring); | |
62a6e103 | 283 | c = STRING_CHAR (str); |
c7c7a80c | 284 | Faset (errstring, make_number (0), make_number (DOWNCASE (c))); |
6c0969ca | 285 | } |
505ab9bc | 286 | |
24b1ddad | 287 | xsignal (Qfile_error, |
505ab9bc RS |
288 | Fcons (build_string (string), Fcons (errstring, data))); |
289 | } | |
570d7624 | 290 | } |
b5148e85 | 291 | |
b27a1703 | 292 | Lisp_Object |
b5148e85 RS |
293 | close_file_unwind (fd) |
294 | Lisp_Object fd; | |
295 | { | |
68c45bf0 | 296 | emacs_close (XFASTINT (fd)); |
b27a1703 | 297 | return Qnil; |
b5148e85 | 298 | } |
a1d2b64a RS |
299 | |
300 | /* Restore point, having saved it as a marker. */ | |
301 | ||
5dcde606 | 302 | Lisp_Object |
a1d2b64a | 303 | restore_point_unwind (location) |
199607e4 | 304 | Lisp_Object location; |
a1d2b64a | 305 | { |
ec7adf26 | 306 | Fgoto_char (location); |
a1d2b64a | 307 | Fset_marker (location, Qnil, Qnil); |
b27a1703 | 308 | return Qnil; |
a1d2b64a | 309 | } |
59c94f03 | 310 | |
570d7624 | 311 | \f |
0bf2eed2 | 312 | Lisp_Object Qexpand_file_name; |
273e0829 | 313 | Lisp_Object Qsubstitute_in_file_name; |
0bf2eed2 RS |
314 | Lisp_Object Qdirectory_file_name; |
315 | Lisp_Object Qfile_name_directory; | |
316 | Lisp_Object Qfile_name_nondirectory; | |
642ef245 | 317 | Lisp_Object Qunhandled_file_name_directory; |
0bf2eed2 | 318 | Lisp_Object Qfile_name_as_directory; |
32f4334d | 319 | Lisp_Object Qcopy_file; |
a6e6e718 | 320 | Lisp_Object Qmake_directory_internal; |
b272d624 | 321 | Lisp_Object Qmake_directory; |
9d8f3bd9 | 322 | Lisp_Object Qdelete_directory_internal; |
32f4334d RS |
323 | Lisp_Object Qdelete_file; |
324 | Lisp_Object Qrename_file; | |
325 | Lisp_Object Qadd_name_to_file; | |
326 | Lisp_Object Qmake_symbolic_link; | |
327 | Lisp_Object Qfile_exists_p; | |
328 | Lisp_Object Qfile_executable_p; | |
329 | Lisp_Object Qfile_readable_p; | |
32f4334d | 330 | Lisp_Object Qfile_writable_p; |
1f8653eb RS |
331 | Lisp_Object Qfile_symlink_p; |
332 | Lisp_Object Qaccess_file; | |
32f4334d | 333 | Lisp_Object Qfile_directory_p; |
adedc71d | 334 | Lisp_Object Qfile_regular_p; |
32f4334d RS |
335 | Lisp_Object Qfile_accessible_directory_p; |
336 | Lisp_Object Qfile_modes; | |
337 | Lisp_Object Qset_file_modes; | |
819da85b | 338 | Lisp_Object Qset_file_times; |
574c05e2 KK |
339 | Lisp_Object Qfile_selinux_context; |
340 | Lisp_Object Qset_file_selinux_context; | |
32f4334d RS |
341 | Lisp_Object Qfile_newer_than_file_p; |
342 | Lisp_Object Qinsert_file_contents; | |
343 | Lisp_Object Qwrite_region; | |
344 | Lisp_Object Qverify_visited_file_modtime; | |
3ec46acd | 345 | Lisp_Object Qset_visited_file_modtime; |
32f4334d | 346 | |
49307295 | 347 | DEFUN ("find-file-name-handler", Ffind_file_name_handler, Sfind_file_name_handler, 2, 2, 0, |
8c1a1077 PJ |
348 | doc: /* Return FILENAME's handler function for OPERATION, if it has one. |
349 | Otherwise, return nil. | |
350 | A file name is handled if one of the regular expressions in | |
351 | `file-name-handler-alist' matches it. | |
352 | ||
353 | If OPERATION equals `inhibit-file-name-operation', then we ignore | |
354 | any handlers that are members of `inhibit-file-name-handlers', | |
355 | but we still do run any other handlers. This lets handlers | |
356 | use the standard functions without calling themselves recursively. */) | |
357 | (filename, operation) | |
358 | Lisp_Object filename, operation; | |
32f4334d | 359 | { |
642ef245 | 360 | /* This function must not munge the match data. */ |
204ee271 | 361 | Lisp_Object chain, inhibited_handlers, result; |
8d2ced53 | 362 | int pos = -1; |
642ef245 | 363 | |
204ee271 | 364 | result = Qnil; |
b7826503 | 365 | CHECK_STRING (filename); |
e4432095 | 366 | |
a65970a0 RS |
367 | if (EQ (operation, Vinhibit_file_name_operation)) |
368 | inhibited_handlers = Vinhibit_file_name_handlers; | |
369 | else | |
370 | inhibited_handlers = Qnil; | |
82c2d839 | 371 | |
93c30b5f | 372 | for (chain = Vfile_name_handler_alist; CONSP (chain); |
03699b14 | 373 | chain = XCDR (chain)) |
32f4334d RS |
374 | { |
375 | Lisp_Object elt; | |
03699b14 | 376 | elt = XCAR (chain); |
93c30b5f | 377 | if (CONSP (elt)) |
32f4334d | 378 | { |
f6c9b683 | 379 | Lisp_Object string = XCAR (elt); |
8d2ced53 | 380 | int match_pos; |
f6c9b683 | 381 | Lisp_Object handler = XCDR (elt); |
68780e2a RS |
382 | Lisp_Object operations = Qnil; |
383 | ||
384 | if (SYMBOLP (handler)) | |
385 | operations = Fget (handler, Qoperations); | |
f6c9b683 | 386 | |
8d2ced53 | 387 | if (STRINGP (string) |
f6c9b683 RS |
388 | && (match_pos = fast_string_match (string, filename)) > pos |
389 | && (NILP (operations) || ! NILP (Fmemq (operation, operations)))) | |
a65970a0 | 390 | { |
f6c9b683 | 391 | Lisp_Object tem; |
a65970a0 | 392 | |
03699b14 | 393 | handler = XCDR (elt); |
a65970a0 RS |
394 | tem = Fmemq (handler, inhibited_handlers); |
395 | if (NILP (tem)) | |
8d2ced53 SM |
396 | { |
397 | result = handler; | |
398 | pos = match_pos; | |
399 | } | |
a65970a0 | 400 | } |
32f4334d | 401 | } |
642ef245 JB |
402 | |
403 | QUIT; | |
32f4334d | 404 | } |
8d2ced53 | 405 | return result; |
32f4334d RS |
406 | } |
407 | \f | |
570d7624 | 408 | DEFUN ("file-name-directory", Ffile_name_directory, Sfile_name_directory, |
8c1a1077 PJ |
409 | 1, 1, 0, |
410 | doc: /* Return the directory component in file name FILENAME. | |
411 | Return nil if FILENAME does not include a directory. | |
78379264 | 412 | Otherwise return a directory name. |
7c2fb837 | 413 | Given a Unix syntax file name, returns a string ending in slash. */) |
8c1a1077 | 414 | (filename) |
3b7f6e60 | 415 | Lisp_Object filename; |
570d7624 | 416 | { |
100c44b7 | 417 | #ifndef DOS_NT |
19290c65 | 418 | register const unsigned char *beg; |
100c44b7 EZ |
419 | #else |
420 | register unsigned char *beg; | |
421 | #endif | |
19290c65 | 422 | register const unsigned char *p; |
0bf2eed2 | 423 | Lisp_Object handler; |
570d7624 | 424 | |
b7826503 | 425 | CHECK_STRING (filename); |
570d7624 | 426 | |
0bf2eed2 RS |
427 | /* If the file name has special constructs in it, |
428 | call the corresponding file handler. */ | |
3b7f6e60 | 429 | handler = Ffind_file_name_handler (filename, Qfile_name_directory); |
0bf2eed2 | 430 | if (!NILP (handler)) |
3b7f6e60 | 431 | return call2 (handler, Qfile_name_directory, filename); |
0bf2eed2 | 432 | |
3b7f6e60 | 433 | filename = FILE_SYSTEM_CASE (filename); |
199607e4 | 434 | #ifdef DOS_NT |
0f3f018c CY |
435 | beg = (unsigned char *) alloca (SBYTES (filename) + 1); |
436 | bcopy (SDATA (filename), beg, SBYTES (filename) + 1); | |
437 | #else | |
438 | beg = SDATA (filename); | |
199607e4 | 439 | #endif |
d5db4077 | 440 | p = beg + SBYTES (filename); |
570d7624 | 441 | |
199607e4 | 442 | while (p != beg && !IS_DIRECTORY_SEP (p[-1]) |
199607e4 | 443 | #ifdef DOS_NT |
ba14e174 RS |
444 | /* only recognise drive specifier at the beginning */ |
445 | && !(p[-1] == ':' | |
446 | /* handle the "/:d:foo" and "/:foo" cases correctly */ | |
447 | && ((p == beg + 2 && !IS_DIRECTORY_SEP (*beg)) | |
448 | || (p == beg + 4 && IS_DIRECTORY_SEP (*beg)))) | |
199607e4 | 449 | #endif |
570d7624 JB |
450 | ) p--; |
451 | ||
452 | if (p == beg) | |
453 | return Qnil; | |
5e570b75 | 454 | #ifdef DOS_NT |
4c3c22f3 | 455 | /* Expansion of "c:" to drive and default directory. */ |
ba14e174 | 456 | if (p[-1] == ':') |
4c3c22f3 | 457 | { |
4c3c22f3 | 458 | /* MAXPATHLEN+1 is guaranteed to be enough space for getdefdir. */ |
199607e4 | 459 | unsigned char *res = alloca (MAXPATHLEN + 1); |
ba14e174 RS |
460 | unsigned char *r = res; |
461 | ||
462 | if (p == beg + 4 && IS_DIRECTORY_SEP (*beg) && beg[1] == ':') | |
463 | { | |
464 | strncpy (res, beg, 2); | |
465 | beg += 2; | |
466 | r += 2; | |
467 | } | |
468 | ||
469 | if (getdefdir (toupper (*beg) - 'A' + 1, r)) | |
4c3c22f3 | 470 | { |
199607e4 | 471 | if (!IS_DIRECTORY_SEP (res[strlen (res) - 1])) |
4c3c22f3 RS |
472 | strcat (res, "/"); |
473 | beg = res; | |
474 | p = beg + strlen (beg); | |
475 | } | |
476 | } | |
199607e4 | 477 | CORRECT_DIR_SEPS (beg); |
5e570b75 | 478 | #endif /* DOS_NT */ |
60d67b83 | 479 | |
d7231f93 | 480 | return make_specified_string (beg, -1, p - beg, STRING_MULTIBYTE (filename)); |
570d7624 JB |
481 | } |
482 | ||
60d67b83 RS |
483 | DEFUN ("file-name-nondirectory", Ffile_name_nondirectory, |
484 | Sfile_name_nondirectory, 1, 1, 0, | |
8c1a1077 PJ |
485 | doc: /* Return file name FILENAME sans its directory. |
486 | For example, in a Unix-syntax file name, | |
487 | this is everything after the last slash, | |
488 | or the entire name if it contains no slash. */) | |
489 | (filename) | |
3b7f6e60 | 490 | Lisp_Object filename; |
570d7624 | 491 | { |
19290c65 | 492 | register const unsigned char *beg, *p, *end; |
0bf2eed2 | 493 | Lisp_Object handler; |
570d7624 | 494 | |
b7826503 | 495 | CHECK_STRING (filename); |
570d7624 | 496 | |
0bf2eed2 RS |
497 | /* If the file name has special constructs in it, |
498 | call the corresponding file handler. */ | |
3b7f6e60 | 499 | handler = Ffind_file_name_handler (filename, Qfile_name_nondirectory); |
0bf2eed2 | 500 | if (!NILP (handler)) |
3b7f6e60 | 501 | return call2 (handler, Qfile_name_nondirectory, filename); |
0bf2eed2 | 502 | |
d5db4077 KR |
503 | beg = SDATA (filename); |
504 | end = p = beg + SBYTES (filename); | |
570d7624 | 505 | |
199607e4 | 506 | while (p != beg && !IS_DIRECTORY_SEP (p[-1]) |
199607e4 RS |
507 | #ifdef DOS_NT |
508 | /* only recognise drive specifier at beginning */ | |
ba14e174 RS |
509 | && !(p[-1] == ':' |
510 | /* handle the "/:d:foo" case correctly */ | |
511 | && (p == beg + 2 || (p == beg + 4 && IS_DIRECTORY_SEP (*beg)))) | |
199607e4 | 512 | #endif |
60d67b83 RS |
513 | ) |
514 | p--; | |
570d7624 | 515 | |
d7231f93 | 516 | return make_specified_string (p, -1, end - p, STRING_MULTIBYTE (filename)); |
570d7624 | 517 | } |
642ef245 | 518 | |
60d67b83 RS |
519 | DEFUN ("unhandled-file-name-directory", Funhandled_file_name_directory, |
520 | Sunhandled_file_name_directory, 1, 1, 0, | |
8c1a1077 PJ |
521 | doc: /* Return a directly usable directory name somehow associated with FILENAME. |
522 | A `directly usable' directory name is one that may be used without the | |
523 | intervention of any file handler. | |
524 | If FILENAME is a directly usable file itself, return | |
525 | \(file-name-directory FILENAME). | |
ca319910 SM |
526 | If FILENAME refers to a file which is not accessible from a local process, |
527 | then this should return nil. | |
8c1a1077 PJ |
528 | The `call-process' and `start-process' functions use this function to |
529 | get a current directory to run processes in. */) | |
530 | (filename) | |
531 | Lisp_Object filename; | |
642ef245 JB |
532 | { |
533 | Lisp_Object handler; | |
534 | ||
535 | /* If the file name has special constructs in it, | |
536 | call the corresponding file handler. */ | |
49307295 | 537 | handler = Ffind_file_name_handler (filename, Qunhandled_file_name_directory); |
642ef245 JB |
538 | if (!NILP (handler)) |
539 | return call2 (handler, Qunhandled_file_name_directory, filename); | |
540 | ||
541 | return Ffile_name_directory (filename); | |
542 | } | |
543 | ||
570d7624 JB |
544 | \f |
545 | char * | |
546 | file_name_as_directory (out, in) | |
547 | char *out, *in; | |
548 | { | |
549 | int size = strlen (in) - 1; | |
550 | ||
551 | strcpy (out, in); | |
552 | ||
8aa3a244 RS |
553 | if (size < 0) |
554 | { | |
154a307d KH |
555 | out[0] = '.'; |
556 | out[1] = '/'; | |
557 | out[2] = 0; | |
8aa3a244 RS |
558 | return out; |
559 | } | |
560 | ||
570d7624 | 561 | /* For Unix syntax, Append a slash if necessary */ |
199607e4 | 562 | if (!IS_DIRECTORY_SEP (out[size])) |
5e570b75 | 563 | { |
8cfd6446 JB |
564 | /* Cannot use DIRECTORY_SEP, which could have any value */ |
565 | out[size + 1] = '/'; | |
5e570b75 RS |
566 | out[size + 2] = '\0'; |
567 | } | |
199607e4 RS |
568 | #ifdef DOS_NT |
569 | CORRECT_DIR_SEPS (out); | |
570 | #endif | |
570d7624 JB |
571 | return out; |
572 | } | |
573 | ||
574 | DEFUN ("file-name-as-directory", Ffile_name_as_directory, | |
575 | Sfile_name_as_directory, 1, 1, 0, | |
0dac4f85 | 576 | doc: /* Return a string representing the file name FILE interpreted as a directory. |
8c1a1077 PJ |
577 | This operation exists because a directory is also a file, but its name as |
578 | a directory is different from its name as a file. | |
579 | The result can be used as the value of `default-directory' | |
580 | or passed as second argument to `expand-file-name'. | |
7c2fb837 | 581 | For a Unix-syntax file name, just appends a slash. */) |
8c1a1077 | 582 | (file) |
570d7624 JB |
583 | Lisp_Object file; |
584 | { | |
585 | char *buf; | |
0bf2eed2 | 586 | Lisp_Object handler; |
570d7624 | 587 | |
b7826503 | 588 | CHECK_STRING (file); |
265a9e55 | 589 | if (NILP (file)) |
570d7624 | 590 | return Qnil; |
0bf2eed2 RS |
591 | |
592 | /* If the file name has special constructs in it, | |
593 | call the corresponding file handler. */ | |
49307295 | 594 | handler = Ffind_file_name_handler (file, Qfile_name_as_directory); |
0bf2eed2 RS |
595 | if (!NILP (handler)) |
596 | return call2 (handler, Qfile_name_as_directory, file); | |
597 | ||
d5db4077 | 598 | buf = (char *) alloca (SBYTES (file) + 10); |
d7231f93 KH |
599 | file_name_as_directory (buf, SDATA (file)); |
600 | return make_specified_string (buf, -1, strlen (buf), | |
601 | STRING_MULTIBYTE (file)); | |
570d7624 JB |
602 | } |
603 | \f | |
604 | /* | |
605 | * Convert from directory name to filename. | |
199607e4 | 606 | * On UNIX, it's simple: just make sure there isn't a terminating / |
570d7624 JB |
607 | |
608 | * Value is nonzero if the string output is different from the input. | |
609 | */ | |
610 | ||
dfcf069d | 611 | int |
570d7624 JB |
612 | directory_file_name (src, dst) |
613 | char *src, *dst; | |
614 | { | |
615 | long slen; | |
570d7624 JB |
616 | |
617 | slen = strlen (src); | |
7c2fb837 | 618 | |
570d7624 JB |
619 | /* Process as Unix format: just remove any final slash. |
620 | But leave "/" unchanged; do not change it to "". */ | |
621 | strcpy (dst, src); | |
199607e4 | 622 | if (slen > 1 |
5e570b75 | 623 | && IS_DIRECTORY_SEP (dst[slen - 1]) |
4592782e RS |
624 | #ifdef DOS_NT |
625 | && !IS_ANY_SEP (dst[slen - 2]) | |
626 | #endif | |
627 | ) | |
570d7624 | 628 | dst[slen - 1] = 0; |
199607e4 RS |
629 | #ifdef DOS_NT |
630 | CORRECT_DIR_SEPS (dst); | |
125feee8 | 631 | #endif |
570d7624 JB |
632 | return 1; |
633 | } | |
634 | ||
635 | DEFUN ("directory-file-name", Fdirectory_file_name, Sdirectory_file_name, | |
8c1a1077 PJ |
636 | 1, 1, 0, |
637 | doc: /* Returns the file name of the directory named DIRECTORY. | |
638 | This is the name of the file that holds the data for the directory DIRECTORY. | |
639 | This operation exists because a directory is also a file, but its name as | |
640 | a directory is different from its name as a file. | |
7c2fb837 | 641 | In Unix-syntax, this function just removes the final slash. */) |
8c1a1077 | 642 | (directory) |
570d7624 JB |
643 | Lisp_Object directory; |
644 | { | |
645 | char *buf; | |
0bf2eed2 | 646 | Lisp_Object handler; |
570d7624 | 647 | |
b7826503 | 648 | CHECK_STRING (directory); |
570d7624 | 649 | |
265a9e55 | 650 | if (NILP (directory)) |
570d7624 | 651 | return Qnil; |
0bf2eed2 RS |
652 | |
653 | /* If the file name has special constructs in it, | |
654 | call the corresponding file handler. */ | |
49307295 | 655 | handler = Ffind_file_name_handler (directory, Qdirectory_file_name); |
0bf2eed2 RS |
656 | if (!NILP (handler)) |
657 | return call2 (handler, Qdirectory_file_name, directory); | |
658 | ||
d5db4077 | 659 | buf = (char *) alloca (SBYTES (directory) + 20); |
d5db4077 | 660 | directory_file_name (SDATA (directory), buf); |
d7231f93 KH |
661 | return make_specified_string (buf, -1, strlen (buf), |
662 | STRING_MULTIBYTE (directory)); | |
570d7624 JB |
663 | } |
664 | ||
91433552 | 665 | static const char make_temp_name_tbl[64] = |
3ce839e4 RS |
666 | { |
667 | 'A','B','C','D','E','F','G','H', | |
668 | 'I','J','K','L','M','N','O','P', | |
669 | 'Q','R','S','T','U','V','W','X', | |
670 | 'Y','Z','a','b','c','d','e','f', | |
671 | 'g','h','i','j','k','l','m','n', | |
672 | 'o','p','q','r','s','t','u','v', | |
673 | 'w','x','y','z','0','1','2','3', | |
674 | '4','5','6','7','8','9','-','_' | |
675 | }; | |
cb613bb8 | 676 | |
3ce839e4 RS |
677 | static unsigned make_temp_name_count, make_temp_name_count_initialized_p; |
678 | ||
cb613bb8 | 679 | /* Value is a temporary file name starting with PREFIX, a string. |
efdc16c9 | 680 | |
cb613bb8 GM |
681 | The Emacs process number forms part of the result, so there is |
682 | no danger of generating a name being used by another process. | |
683 | In addition, this function makes an attempt to choose a name | |
684 | which has no existing file. To make this work, PREFIX should be | |
685 | an absolute file name. | |
efdc16c9 | 686 | |
cb613bb8 GM |
687 | BASE64_P non-zero means add the pid as 3 characters in base64 |
688 | encoding. In this case, 6 characters will be added to PREFIX to | |
689 | form the file name. Otherwise, if Emacs is running on a system | |
690 | with long file names, add the pid as a decimal number. | |
691 | ||
692 | This function signals an error if no unique file name could be | |
693 | generated. */ | |
694 | ||
695 | Lisp_Object | |
696 | make_temp_name (prefix, base64_p) | |
570d7624 | 697 | Lisp_Object prefix; |
cb613bb8 | 698 | int base64_p; |
570d7624 JB |
699 | { |
700 | Lisp_Object val; | |
0cedd530 | 701 | int len, clen; |
3ce839e4 RS |
702 | int pid; |
703 | unsigned char *p, *data; | |
704 | char pidbuf[20]; | |
705 | int pidlen; | |
efdc16c9 | 706 | |
b7826503 | 707 | CHECK_STRING (prefix); |
3ce839e4 RS |
708 | |
709 | /* VAL is created by adding 6 characters to PREFIX. The first | |
710 | three are the PID of this process, in base 64, and the second | |
711 | three are incremented if the file already exists. This ensures | |
712 | 262144 unique file names per PID per PREFIX. */ | |
713 | ||
714 | pid = (int) getpid (); | |
715 | ||
cb613bb8 GM |
716 | if (base64_p) |
717 | { | |
718 | pidbuf[0] = make_temp_name_tbl[pid & 63], pid >>= 6; | |
719 | pidbuf[1] = make_temp_name_tbl[pid & 63], pid >>= 6; | |
720 | pidbuf[2] = make_temp_name_tbl[pid & 63], pid >>= 6; | |
721 | pidlen = 3; | |
722 | } | |
723 | else | |
724 | { | |
3ce839e4 | 725 | #ifdef HAVE_LONG_FILE_NAMES |
cb613bb8 GM |
726 | sprintf (pidbuf, "%d", pid); |
727 | pidlen = strlen (pidbuf); | |
3a3bfb18 | 728 | #else |
cb613bb8 GM |
729 | pidbuf[0] = make_temp_name_tbl[pid & 63], pid >>= 6; |
730 | pidbuf[1] = make_temp_name_tbl[pid & 63], pid >>= 6; | |
731 | pidbuf[2] = make_temp_name_tbl[pid & 63], pid >>= 6; | |
732 | pidlen = 3; | |
3ce839e4 | 733 | #endif |
cb613bb8 | 734 | } |
efdc16c9 | 735 | |
0cedd530 SM |
736 | len = SBYTES (prefix); clen = SCHARS (prefix); |
737 | val = make_uninit_multibyte_string (clen + 3 + pidlen, len + 3 + pidlen); | |
738 | if (!STRING_MULTIBYTE (prefix)) | |
739 | STRING_SET_UNIBYTE (val); | |
d5db4077 KR |
740 | data = SDATA (val); |
741 | bcopy(SDATA (prefix), data, len); | |
3ce839e4 RS |
742 | p = data + len; |
743 | ||
744 | bcopy (pidbuf, p, pidlen); | |
745 | p += pidlen; | |
746 | ||
747 | /* Here we try to minimize useless stat'ing when this function is | |
748 | invoked many times successively with the same PREFIX. We achieve | |
749 | this by initializing count to a random value, and incrementing it | |
f6a492a9 RS |
750 | afterwards. |
751 | ||
752 | We don't want make-temp-name to be called while dumping, | |
753 | because then make_temp_name_count_initialized_p would get set | |
754 | and then make_temp_name_count would not be set when Emacs starts. */ | |
755 | ||
3ce839e4 RS |
756 | if (!make_temp_name_count_initialized_p) |
757 | { | |
758 | make_temp_name_count = (unsigned) time (NULL); | |
759 | make_temp_name_count_initialized_p = 1; | |
760 | } | |
761 | ||
762 | while (1) | |
763 | { | |
764 | struct stat ignored; | |
8a7777fc | 765 | unsigned num = make_temp_name_count; |
3ce839e4 RS |
766 | |
767 | p[0] = make_temp_name_tbl[num & 63], num >>= 6; | |
768 | p[1] = make_temp_name_tbl[num & 63], num >>= 6; | |
769 | p[2] = make_temp_name_tbl[num & 63], num >>= 6; | |
770 | ||
8a7777fc RS |
771 | /* Poor man's congruential RN generator. Replace with |
772 | ++make_temp_name_count for debugging. */ | |
773 | make_temp_name_count += 25229; | |
774 | make_temp_name_count %= 225307; | |
775 | ||
3ce839e4 RS |
776 | if (stat (data, &ignored) < 0) |
777 | { | |
778 | /* We want to return only if errno is ENOENT. */ | |
779 | if (errno == ENOENT) | |
780 | return val; | |
781 | else | |
782 | /* The error here is dubious, but there is little else we | |
783 | can do. The alternatives are to return nil, which is | |
784 | as bad as (and in many cases worse than) throwing the | |
785 | error, or to ignore the error, which will likely result | |
8a7777fc RS |
786 | in looping through 225307 stat's, which is not only |
787 | dog-slow, but also useless since it will fallback to | |
788 | the errow below, anyway. */ | |
9869bb0b | 789 | report_file_error ("Cannot create temporary name for prefix", |
3ce839e4 RS |
790 | Fcons (prefix, Qnil)); |
791 | /* not reached */ | |
792 | } | |
793 | } | |
794 | ||
795 | error ("Cannot create temporary name for prefix `%s'", | |
d5db4077 | 796 | SDATA (prefix)); |
3ce839e4 | 797 | return Qnil; |
570d7624 | 798 | } |
3ce839e4 | 799 | |
cb613bb8 GM |
800 | |
801 | DEFUN ("make-temp-name", Fmake_temp_name, Smake_temp_name, 1, 1, 0, | |
8c1a1077 PJ |
802 | doc: /* Generate temporary file name (string) starting with PREFIX (a string). |
803 | The Emacs process number forms part of the result, | |
804 | so there is no danger of generating a name being used by another process. | |
805 | ||
806 | In addition, this function makes an attempt to choose a name | |
807 | which has no existing file. To make this work, | |
808 | PREFIX should be an absolute file name. | |
809 | ||
810 | There is a race condition between calling `make-temp-name' and creating the | |
811 | file which opens all kinds of security holes. For that reason, you should | |
f9e6f049 RS |
812 | probably use `make-temp-file' instead, except in three circumstances: |
813 | ||
814 | * If you are creating the file in the user's home directory. | |
815 | * If you are creating a directory rather than an ordinary file. | |
816 | * If you are taking special precautions as `make-temp-file' does. */) | |
8c1a1077 | 817 | (prefix) |
cb613bb8 GM |
818 | Lisp_Object prefix; |
819 | { | |
820 | return make_temp_name (prefix, 0); | |
821 | } | |
822 | ||
823 | ||
570d7624 JB |
824 | \f |
825 | DEFUN ("expand-file-name", Fexpand_file_name, Sexpand_file_name, 1, 2, 0, | |
8c1a1077 PJ |
826 | doc: /* Convert filename NAME to absolute, and canonicalize it. |
827 | Second arg DEFAULT-DIRECTORY is directory to start with if NAME is relative | |
78379264 | 828 | \(does not start with slash or tilde); if DEFAULT-DIRECTORY is nil or missing, |
a4e03fe5 | 829 | the current buffer's value of `default-directory' is used. |
8c1a1077 PJ |
830 | File name components that are `.' are removed, and |
831 | so are file name components followed by `..', along with the `..' itself; | |
832 | note that these simplifications are done without checking the resulting | |
833 | file names in the file system. | |
834 | An initial `~/' expands to your home directory. | |
835 | An initial `~USER/' expands to USER's home directory. | |
07114296 CY |
836 | See also the function `substitute-in-file-name'. |
837 | ||
838 | For technical reasons, this function can return correct but | |
839 | non-intuitive results for the root directory; for instance, | |
840 | \(expand-file-name ".." "/") returns "/..". For this reason, use | |
841 | (directory-file-name (file-name-directory dirname)) to traverse a | |
842 | filesystem tree, not (expand-file-name ".." dirname). */) | |
8c1a1077 | 843 | (name, default_directory) |
3b7f6e60 | 844 | Lisp_Object name, default_directory; |
570d7624 | 845 | { |
5b5a2ea1 SM |
846 | /* These point to SDATA and need to be careful with string-relocation |
847 | during GC (via DECODE_FILE). */ | |
848 | unsigned char *nm, *newdir; | |
849 | /* This should only point to alloca'd data. */ | |
850 | unsigned char *target; | |
199607e4 | 851 | |
570d7624 | 852 | int tlen; |
570d7624 | 853 | struct passwd *pw; |
5e570b75 | 854 | #ifdef DOS_NT |
199607e4 | 855 | int drive = 0; |
9a1dc3be | 856 | int collapse_newdir = 1; |
f0f95d31 | 857 | int is_escaped = 0; |
5e570b75 | 858 | #endif /* DOS_NT */ |
199607e4 | 859 | int length; |
beb402de | 860 | Lisp_Object handler, result; |
2b046a72 | 861 | int multibyte; |
9c06a1f3 | 862 | Lisp_Object hdir; |
199607e4 | 863 | |
b7826503 | 864 | CHECK_STRING (name); |
570d7624 | 865 | |
0bf2eed2 RS |
866 | /* If the file name has special constructs in it, |
867 | call the corresponding file handler. */ | |
49307295 | 868 | handler = Ffind_file_name_handler (name, Qexpand_file_name); |
0bf2eed2 | 869 | if (!NILP (handler)) |
3b7f6e60 | 870 | return call3 (handler, Qexpand_file_name, name, default_directory); |
58fc9587 | 871 | |
3b7f6e60 EN |
872 | /* Use the buffer's default-directory if DEFAULT_DIRECTORY is omitted. */ |
873 | if (NILP (default_directory)) | |
874 | default_directory = current_buffer->directory; | |
82330e7f | 875 | if (! STRINGP (default_directory)) |
dd693537 EZ |
876 | { |
877 | #ifdef DOS_NT | |
878 | /* "/" is not considered a root directory on DOS_NT, so using "/" | |
879 | here causes an infinite recursion in, e.g., the following: | |
880 | ||
881 | (let (default-directory) | |
882 | (expand-file-name "a")) | |
883 | ||
884 | To avoid this, we set default_directory to the root of the | |
885 | current drive. */ | |
886 | extern char *emacs_root_dir (void); | |
887 | ||
888 | default_directory = build_string (emacs_root_dir ()); | |
889 | #else | |
890 | default_directory = build_string ("/"); | |
891 | #endif | |
892 | } | |
58fc9587 | 893 | |
3b7f6e60 | 894 | if (!NILP (default_directory)) |
273e0829 | 895 | { |
3b7f6e60 | 896 | handler = Ffind_file_name_handler (default_directory, Qexpand_file_name); |
273e0829 | 897 | if (!NILP (handler)) |
3b7f6e60 | 898 | return call3 (handler, Qexpand_file_name, name, default_directory); |
273e0829 | 899 | } |
0bf2eed2 | 900 | |
5b5a2ea1 SM |
901 | { |
902 | unsigned char *o = SDATA (default_directory); | |
903 | ||
904 | /* Make sure DEFAULT_DIRECTORY is properly expanded. | |
905 | It would be better to do this down below where we actually use | |
906 | default_directory. Unfortunately, calling Fexpand_file_name recursively | |
907 | could invoke GC, and the strings might be relocated. This would | |
908 | be annoying because we have pointers into strings lying around | |
909 | that would need adjusting, and people would add new pointers to | |
910 | the code and forget to adjust them, resulting in intermittent bugs. | |
911 | Putting this call here avoids all that crud. | |
912 | ||
913 | The EQ test avoids infinite recursion. */ | |
914 | if (! NILP (default_directory) && !EQ (default_directory, name) | |
915 | /* Save time in some common cases - as long as default_directory | |
916 | is not relative, it can be canonicalized with name below (if it | |
917 | is needed at all) without requiring it to be expanded now. */ | |
01937013 | 918 | #ifdef DOS_NT |
5b5a2ea1 SM |
919 | /* Detect MSDOS file names with drive specifiers. */ |
920 | && ! (IS_DRIVE (o[0]) && IS_DEVICE_SEP (o[1]) | |
921 | && IS_DIRECTORY_SEP (o[2])) | |
199607e4 | 922 | #ifdef WINDOWSNT |
5b5a2ea1 SM |
923 | /* Detect Windows file names in UNC format. */ |
924 | && ! (IS_DIRECTORY_SEP (o[0]) && IS_DIRECTORY_SEP (o[1])) | |
01937013 | 925 | #endif |
199607e4 RS |
926 | #else /* not DOS_NT */ |
927 | /* Detect Unix absolute file names (/... alone is not absolute on | |
928 | DOS or Windows). */ | |
5b5a2ea1 | 929 | && ! (IS_DIRECTORY_SEP (o[0])) |
199607e4 | 930 | #endif /* not DOS_NT */ |
5b5a2ea1 SM |
931 | ) |
932 | { | |
933 | struct gcpro gcpro1; | |
f14b1c68 | 934 | |
5b5a2ea1 SM |
935 | GCPRO1 (name); |
936 | default_directory = Fexpand_file_name (default_directory, Qnil); | |
937 | UNGCPRO; | |
938 | } | |
939 | } | |
4c3c22f3 | 940 | name = FILE_SYSTEM_CASE (name); |
2b046a72 | 941 | multibyte = STRING_MULTIBYTE (name); |
6d060996 KH |
942 | if (multibyte != STRING_MULTIBYTE (default_directory)) |
943 | { | |
944 | if (multibyte) | |
945 | default_directory = string_to_multibyte (default_directory); | |
946 | else | |
947 | { | |
948 | name = string_to_multibyte (name); | |
949 | multibyte = 1; | |
950 | } | |
951 | } | |
952 | ||
565f0b98 | 953 | /* Make a local copy of nm[] to protect it from GC in DECODE_FILE below. */ |
0f3f018c CY |
954 | nm = (unsigned char *) alloca (SBYTES (name) + 1); |
955 | bcopy (SDATA (name), nm, SBYTES (name) + 1); | |
199607e4 | 956 | |
565f0b98 | 957 | #ifdef DOS_NT |
f0f95d31 RS |
958 | /* Note if special escape prefix is present, but remove for now. */ |
959 | if (nm[0] == '/' && nm[1] == ':') | |
960 | { | |
961 | is_escaped = 1; | |
962 | nm += 2; | |
963 | } | |
964 | ||
199607e4 | 965 | /* Find and remove drive specifier if present; this makes nm absolute |
f0f95d31 RS |
966 | even if the rest of the name appears to be relative. Only look for |
967 | drive specifier at the beginning. */ | |
968 | if (IS_DRIVE (nm[0]) && IS_DEVICE_SEP (nm[1])) | |
969 | { | |
970 | drive = nm[0]; | |
971 | nm += 2; | |
972 | } | |
bb1ff1f4 GV |
973 | |
974 | #ifdef WINDOWSNT | |
975 | /* If we see "c://somedir", we want to strip the first slash after the | |
976 | colon when stripping the drive letter. Otherwise, this expands to | |
977 | "//somedir". */ | |
978 | if (drive && IS_DIRECTORY_SEP (nm[0]) && IS_DIRECTORY_SEP (nm[1])) | |
979 | nm++; | |
4c3c22f3 | 980 | |
199607e4 RS |
981 | /* Discard any previous drive specifier if nm is now in UNC format. */ |
982 | if (IS_DIRECTORY_SEP (nm[0]) && IS_DIRECTORY_SEP (nm[1])) | |
983 | { | |
984 | drive = 0; | |
985 | } | |
5b5a2ea1 SM |
986 | #endif /* WINDOWSNT */ |
987 | #endif /* DOS_NT */ | |
199607e4 | 988 | |
214378ec GM |
989 | /* If nm is absolute, look for `/./' or `/../' or `//''sequences; if |
990 | none are found, we can probably return right away. We will avoid | |
991 | allocating a new string if name is already fully expanded. */ | |
570d7624 | 992 | if ( |
5e570b75 | 993 | IS_DIRECTORY_SEP (nm[0]) |
199607e4 | 994 | #ifdef MSDOS |
f0f95d31 | 995 | && drive && !is_escaped |
199607e4 RS |
996 | #endif |
997 | #ifdef WINDOWSNT | |
f0f95d31 | 998 | && (drive || IS_DIRECTORY_SEP (nm[1])) && !is_escaped |
199607e4 | 999 | #endif |
570d7624 JB |
1000 | ) |
1001 | { | |
f14b1c68 JB |
1002 | /* If it turns out that the filename we want to return is just a |
1003 | suffix of FILENAME, we don't need to go through and edit | |
1004 | things; we just need to construct a new string using data | |
1005 | starting at the middle of FILENAME. If we set lose to a | |
1006 | non-zero value, that means we've discovered that we can't do | |
1007 | that cool trick. */ | |
1008 | int lose = 0; | |
5b5a2ea1 | 1009 | unsigned char *p = nm; |
f14b1c68 | 1010 | |
570d7624 JB |
1011 | while (*p) |
1012 | { | |
199607e4 | 1013 | /* Since we know the name is absolute, we can assume that each |
c77d647e JB |
1014 | element starts with a "/". */ |
1015 | ||
c77d647e | 1016 | /* "." and ".." are hairy. */ |
5e570b75 | 1017 | if (IS_DIRECTORY_SEP (p[0]) |
c77d647e | 1018 | && p[1] == '.' |
5e570b75 | 1019 | && (IS_DIRECTORY_SEP (p[2]) |
c77d647e | 1020 | || p[2] == 0 |
5e570b75 | 1021 | || (p[2] == '.' && (IS_DIRECTORY_SEP (p[3]) |
c77d647e | 1022 | || p[3] == 0)))) |
570d7624 | 1023 | lose = 1; |
214378ec GM |
1024 | /* We want to replace multiple `/' in a row with a single |
1025 | slash. */ | |
1026 | else if (p > nm | |
1027 | && IS_DIRECTORY_SEP (p[0]) | |
1028 | && IS_DIRECTORY_SEP (p[1])) | |
1029 | lose = 1; | |
570d7624 JB |
1030 | p++; |
1031 | } | |
1032 | if (!lose) | |
1033 | { | |
199607e4 RS |
1034 | #ifdef DOS_NT |
1035 | /* Make sure directories are all separated with / or \ as | |
1036 | desired, but avoid allocation of a new string when not | |
1037 | required. */ | |
1038 | CORRECT_DIR_SEPS (nm); | |
1039 | #ifdef WINDOWSNT | |
1040 | if (IS_DIRECTORY_SEP (nm[1])) | |
1041 | { | |
d5db4077 | 1042 | if (strcmp (nm, SDATA (name)) != 0) |
2b046a72 | 1043 | name = make_specified_string (nm, -1, strlen (nm), multibyte); |
199607e4 RS |
1044 | } |
1045 | else | |
1046 | #endif | |
1047 | /* drive must be set, so this is okay */ | |
d5db4077 | 1048 | if (strcmp (nm - 2, SDATA (name)) != 0) |
199607e4 | 1049 | { |
3f817c73 KH |
1050 | char temp[] = " :"; |
1051 | ||
2b046a72 | 1052 | name = make_specified_string (nm, -1, p - nm, multibyte); |
3f817c73 KH |
1053 | temp[0] = DRIVE_LETTER (drive); |
1054 | name = concat2 (build_string (temp), name); | |
199607e4 RS |
1055 | } |
1056 | return name; | |
1057 | #else /* not DOS_NT */ | |
565f0b98 | 1058 | if (strcmp (nm, SDATA (name)) == 0) |
570d7624 | 1059 | return name; |
2b046a72 | 1060 | return make_specified_string (nm, -1, strlen (nm), multibyte); |
5e570b75 | 1061 | #endif /* not DOS_NT */ |
570d7624 JB |
1062 | } |
1063 | } | |
1064 | ||
199607e4 RS |
1065 | /* At this point, nm might or might not be an absolute file name. We |
1066 | need to expand ~ or ~user if present, otherwise prefix nm with | |
1067 | default_directory if nm is not absolute, and finally collapse /./ | |
1068 | and /foo/../ sequences. | |
1069 | ||
1070 | We set newdir to be the appropriate prefix if one is needed: | |
1071 | - the relevant user directory if nm starts with ~ or ~user | |
1072 | - the specified drive's working dir (DOS/NT only) if nm does not | |
1073 | start with / | |
1074 | - the value of default_directory. | |
1075 | ||
1076 | Note that these prefixes are not guaranteed to be absolute (except | |
1077 | for the working dir of a drive). Therefore, to ensure we always | |
1078 | return an absolute name, if the final prefix is not absolute we | |
1079 | append it to the current working directory. */ | |
570d7624 JB |
1080 | |
1081 | newdir = 0; | |
1082 | ||
1083 | if (nm[0] == '~') /* prefix ~ */ | |
c77d647e | 1084 | { |
5e570b75 | 1085 | if (IS_DIRECTORY_SEP (nm[1]) |
c77d647e JB |
1086 | || nm[1] == 0) /* ~ by itself */ |
1087 | { | |
6d557778 EZ |
1088 | Lisp_Object tem; |
1089 | ||
c77d647e JB |
1090 | if (!(newdir = (unsigned char *) egetenv ("HOME"))) |
1091 | newdir = (unsigned char *) ""; | |
199607e4 | 1092 | nm++; |
6d557778 EZ |
1093 | /* egetenv may return a unibyte string, which will bite us since |
1094 | we expect the directory to be multibyte. */ | |
9c06a1f3 EZ |
1095 | tem = build_string (newdir); |
1096 | if (!STRING_MULTIBYTE (tem)) | |
1097 | { | |
1098 | hdir = DECODE_FILE (tem); | |
1099 | newdir = SDATA (hdir); | |
1100 | } | |
5e570b75 | 1101 | #ifdef DOS_NT |
9a1dc3be | 1102 | collapse_newdir = 0; |
4c3c22f3 | 1103 | #endif |
c77d647e JB |
1104 | } |
1105 | else /* ~user/filename */ | |
1106 | { | |
5b5a2ea1 | 1107 | unsigned char *o, *p; |
7c2fb837 | 1108 | for (p = nm; *p && (!IS_DIRECTORY_SEP (*p)); p++); |
5b5a2ea1 | 1109 | o = alloca (p - nm + 1); |
c77d647e JB |
1110 | bcopy ((char *) nm, o, p - nm); |
1111 | o [p - nm] = 0; | |
1112 | ||
67c08d6c | 1113 | BLOCK_INPUT; |
c77d647e | 1114 | pw = (struct passwd *) getpwnam (o + 1); |
67c08d6c | 1115 | UNBLOCK_INPUT; |
c77d647e JB |
1116 | if (pw) |
1117 | { | |
1118 | newdir = (unsigned char *) pw -> pw_dir; | |
c77d647e | 1119 | nm = p; |
199607e4 | 1120 | #ifdef DOS_NT |
9a1dc3be | 1121 | collapse_newdir = 0; |
199607e4 | 1122 | #endif |
c77d647e | 1123 | } |
e5d77022 | 1124 | |
c77d647e JB |
1125 | /* If we don't find a user of that name, leave the name |
1126 | unchanged; don't move nm forward to p. */ | |
1127 | } | |
1128 | } | |
570d7624 | 1129 | |
5e570b75 | 1130 | #ifdef DOS_NT |
199607e4 RS |
1131 | /* On DOS and Windows, nm is absolute if a drive name was specified; |
1132 | use the drive's current directory as the prefix if needed. */ | |
1133 | if (!newdir && drive) | |
1134 | { | |
1135 | /* Get default directory if needed to make nm absolute. */ | |
1136 | if (!IS_DIRECTORY_SEP (nm[0])) | |
1137 | { | |
1138 | newdir = alloca (MAXPATHLEN + 1); | |
1139 | if (!getdefdir (toupper (drive) - 'A' + 1, newdir)) | |
1140 | newdir = NULL; | |
1141 | } | |
1142 | if (!newdir) | |
1143 | { | |
1144 | /* Either nm starts with /, or drive isn't mounted. */ | |
1145 | newdir = alloca (4); | |
f94988a7 | 1146 | newdir[0] = DRIVE_LETTER (drive); |
199607e4 RS |
1147 | newdir[1] = ':'; |
1148 | newdir[2] = '/'; | |
1149 | newdir[3] = 0; | |
1150 | } | |
1151 | } | |
5e570b75 | 1152 | #endif /* DOS_NT */ |
199607e4 RS |
1153 | |
1154 | /* Finally, if no prefix has been specified and nm is not absolute, | |
1155 | then it must be expanded relative to default_directory. */ | |
1156 | ||
34097368 | 1157 | if (1 |
199607e4 RS |
1158 | #ifndef DOS_NT |
1159 | /* /... alone is not absolute on DOS and Windows. */ | |
34097368 | 1160 | && !IS_DIRECTORY_SEP (nm[0]) |
199607e4 RS |
1161 | #endif |
1162 | #ifdef WINDOWSNT | |
34097368 | 1163 | && !(IS_DIRECTORY_SEP (nm[0]) && IS_DIRECTORY_SEP (nm[1])) |
199607e4 | 1164 | #endif |
570d7624 JB |
1165 | && !newdir) |
1166 | { | |
d5db4077 | 1167 | newdir = SDATA (default_directory); |
f0f95d31 RS |
1168 | #ifdef DOS_NT |
1169 | /* Note if special escape prefix is present, but remove for now. */ | |
1170 | if (newdir[0] == '/' && newdir[1] == ':') | |
1171 | { | |
1172 | is_escaped = 1; | |
1173 | newdir += 2; | |
1174 | } | |
1175 | #endif | |
570d7624 JB |
1176 | } |
1177 | ||
5e570b75 | 1178 | #ifdef DOS_NT |
199607e4 RS |
1179 | if (newdir) |
1180 | { | |
1181 | /* First ensure newdir is an absolute name. */ | |
1182 | if ( | |
1183 | /* Detect MSDOS file names with drive specifiers. */ | |
1184 | ! (IS_DRIVE (newdir[0]) | |
1185 | && IS_DEVICE_SEP (newdir[1]) && IS_DIRECTORY_SEP (newdir[2])) | |
1186 | #ifdef WINDOWSNT | |
1187 | /* Detect Windows file names in UNC format. */ | |
1188 | && ! (IS_DIRECTORY_SEP (newdir[0]) && IS_DIRECTORY_SEP (newdir[1])) | |
1189 | #endif | |
1190 | ) | |
1191 | { | |
1192 | /* Effectively, let newdir be (expand-file-name newdir cwd). | |
1193 | Because of the admonition against calling expand-file-name | |
1194 | when we have pointers into lisp strings, we accomplish this | |
1195 | indirectly by prepending newdir to nm if necessary, and using | |
1196 | cwd (or the wd of newdir's drive) as the new newdir. */ | |
1197 | ||
c70a4df6 | 1198 | if (IS_DRIVE (newdir[0]) && IS_DEVICE_SEP (newdir[1])) |
199607e4 RS |
1199 | { |
1200 | drive = newdir[0]; | |
1201 | newdir += 2; | |
1202 | } | |
1203 | if (!IS_DIRECTORY_SEP (nm[0])) | |
1204 | { | |
1205 | char * tmp = alloca (strlen (newdir) + strlen (nm) + 2); | |
1206 | file_name_as_directory (tmp, newdir); | |
1207 | strcat (tmp, nm); | |
1208 | nm = tmp; | |
1209 | } | |
1210 | newdir = alloca (MAXPATHLEN + 1); | |
1211 | if (drive) | |
1212 | { | |
1213 | if (!getdefdir (toupper (drive) - 'A' + 1, newdir)) | |
1214 | newdir = "/"; | |
1215 | } | |
1216 | else | |
1217 | getwd (newdir); | |
1218 | } | |
1219 | ||
1220 | /* Strip off drive name from prefix, if present. */ | |
c70a4df6 | 1221 | if (IS_DRIVE (newdir[0]) && IS_DEVICE_SEP (newdir[1])) |
199607e4 RS |
1222 | { |
1223 | drive = newdir[0]; | |
1224 | newdir += 2; | |
1225 | } | |
1226 | ||
1227 | /* Keep only a prefix from newdir if nm starts with slash | |
82330e7f | 1228 | (//server/share for UNC, nothing otherwise). */ |
9a1dc3be | 1229 | if (IS_DIRECTORY_SEP (nm[0]) && collapse_newdir) |
199607e4 RS |
1230 | { |
1231 | #ifdef WINDOWSNT | |
1232 | if (IS_DIRECTORY_SEP (newdir[0]) && IS_DIRECTORY_SEP (newdir[1])) | |
1233 | { | |
f5acc071 | 1234 | unsigned char *p; |
199607e4 RS |
1235 | newdir = strcpy (alloca (strlen (newdir) + 1), newdir); |
1236 | p = newdir + 2; | |
1237 | while (*p && !IS_DIRECTORY_SEP (*p)) p++; | |
1238 | p++; | |
1239 | while (*p && !IS_DIRECTORY_SEP (*p)) p++; | |
1240 | *p = 0; | |
1241 | } | |
1242 | else | |
1243 | #endif | |
1244 | newdir = ""; | |
1245 | } | |
1246 | } | |
5e570b75 | 1247 | #endif /* DOS_NT */ |
199607e4 RS |
1248 | |
1249 | if (newdir) | |
bfb61299 | 1250 | { |
57676091 | 1251 | /* Get rid of any slash at the end of newdir, unless newdir is |
f0f95d31 | 1252 | just / or // (an incomplete UNC name). */ |
199607e4 | 1253 | length = strlen (newdir); |
f0f95d31 | 1254 | if (length > 1 && IS_DIRECTORY_SEP (newdir[length - 1]) |
57676091 RS |
1255 | #ifdef WINDOWSNT |
1256 | && !(length == 2 && IS_DIRECTORY_SEP (newdir[0])) | |
1257 | #endif | |
1258 | ) | |
bfb61299 JB |
1259 | { |
1260 | unsigned char *temp = (unsigned char *) alloca (length); | |
1261 | bcopy (newdir, temp, length - 1); | |
1262 | temp[length - 1] = 0; | |
1263 | newdir = temp; | |
1264 | } | |
1265 | tlen = length + 1; | |
1266 | } | |
1267 | else | |
1268 | tlen = 0; | |
570d7624 | 1269 | |
bfb61299 JB |
1270 | /* Now concatenate the directory and name to new space in the stack frame */ |
1271 | tlen += strlen (nm) + 1; | |
5e570b75 | 1272 | #ifdef DOS_NT |
f0f95d31 RS |
1273 | /* Reserve space for drive specifier and escape prefix, since either |
1274 | or both may need to be inserted. (The Microsoft x86 compiler | |
5e570b75 | 1275 | produces incorrect code if the following two lines are combined.) */ |
f0f95d31 RS |
1276 | target = (unsigned char *) alloca (tlen + 4); |
1277 | target += 4; | |
5e570b75 | 1278 | #else /* not DOS_NT */ |
570d7624 | 1279 | target = (unsigned char *) alloca (tlen); |
5e570b75 | 1280 | #endif /* not DOS_NT */ |
570d7624 JB |
1281 | *target = 0; |
1282 | ||
1283 | if (newdir) | |
1284 | { | |
5e570b75 | 1285 | if (nm[0] == 0 || IS_DIRECTORY_SEP (nm[0])) |
f5321b5c | 1286 | { |
3ea2d8b2 | 1287 | #ifdef DOS_NT |
f5321b5c RS |
1288 | /* If newdir is effectively "C:/", then the drive letter will have |
1289 | been stripped and newdir will be "/". Concatenating with an | |
1290 | absolute directory in nm produces "//", which will then be | |
1291 | incorrectly treated as a network share. Ignore newdir in | |
1292 | this case (keeping the drive letter). */ | |
efdc16c9 | 1293 | if (!(drive && nm[0] && IS_DIRECTORY_SEP (newdir[0]) |
f5321b5c RS |
1294 | && newdir[1] == '\0')) |
1295 | #endif | |
1296 | strcpy (target, newdir); | |
1297 | } | |
570d7624 | 1298 | else |
c77d647e | 1299 | file_name_as_directory (target, newdir); |
570d7624 JB |
1300 | } |
1301 | ||
1302 | strcat (target, nm); | |
199607e4 | 1303 | |
214378ec GM |
1304 | /* Now canonicalize by removing `//', `/.' and `/foo/..' if they |
1305 | appear. */ | |
5b5a2ea1 SM |
1306 | { |
1307 | unsigned char *p = target; | |
1308 | unsigned char *o = target; | |
570d7624 | 1309 | |
5b5a2ea1 SM |
1310 | while (*p) |
1311 | { | |
5b5a2ea1 SM |
1312 | if (!IS_DIRECTORY_SEP (*p)) |
1313 | { | |
1314 | *o++ = *p++; | |
1315 | } | |
1316 | else if (p[1] == '.' | |
1317 | && (IS_DIRECTORY_SEP (p[2]) | |
1318 | || p[2] == 0)) | |
1319 | { | |
1320 | /* If "/." is the entire filename, keep the "/". Otherwise, | |
1321 | just delete the whole "/.". */ | |
1322 | if (o == target && p[2] == '\0') | |
1323 | *o++ = *p; | |
1324 | p += 2; | |
1325 | } | |
1326 | else if (p[1] == '.' && p[2] == '.' | |
1327 | /* `/../' is the "superroot" on certain file systems. | |
1328 | Turned off on DOS_NT systems because they have no | |
1329 | "superroot" and because this causes us to produce | |
1330 | file names like "d:/../foo" which fail file-related | |
1331 | functions of the underlying OS. (To reproduce, try a | |
1332 | long series of "../../" in default_directory, longer | |
1333 | than the number of levels from the root.) */ | |
aa4060b9 | 1334 | #ifndef DOS_NT |
5b5a2ea1 | 1335 | && o != target |
aa4060b9 | 1336 | #endif |
5b5a2ea1 SM |
1337 | && (IS_DIRECTORY_SEP (p[3]) || p[3] == 0)) |
1338 | { | |
972ed246 JR |
1339 | #ifdef WINDOWSNT |
1340 | unsigned char *prev_o = o; | |
1341 | #endif | |
5b5a2ea1 SM |
1342 | while (o != target && (--o) && !IS_DIRECTORY_SEP (*o)) |
1343 | ; | |
972ed246 JR |
1344 | #ifdef WINDOWSNT |
1345 | /* Don't go below server level in UNC filenames. */ | |
1346 | if (o == target + 1 && IS_DIRECTORY_SEP (*o) | |
1347 | && IS_DIRECTORY_SEP (*target)) | |
1348 | o = prev_o; | |
1349 | else | |
1350 | #endif | |
5b5a2ea1 SM |
1351 | /* Keep initial / only if this is the whole name. */ |
1352 | if (o == target && IS_ANY_SEP (*o) && p[3] == 0) | |
1353 | ++o; | |
1354 | p += 3; | |
1355 | } | |
1356 | else if (p > target && IS_DIRECTORY_SEP (p[1])) | |
1357 | /* Collapse multiple `/' in a row. */ | |
1358 | p++; | |
1359 | else | |
1360 | { | |
1361 | *o++ = *p++; | |
1362 | } | |
5b5a2ea1 | 1363 | } |
570d7624 | 1364 | |
5e570b75 | 1365 | #ifdef DOS_NT |
5b5a2ea1 | 1366 | /* At last, set drive name. */ |
5e570b75 | 1367 | #ifdef WINDOWSNT |
5b5a2ea1 SM |
1368 | /* Except for network file name. */ |
1369 | if (!(IS_DIRECTORY_SEP (target[0]) && IS_DIRECTORY_SEP (target[1]))) | |
5e570b75 | 1370 | #endif /* WINDOWSNT */ |
5b5a2ea1 SM |
1371 | { |
1372 | if (!drive) abort (); | |
1373 | target -= 2; | |
1374 | target[0] = DRIVE_LETTER (drive); | |
1375 | target[1] = ':'; | |
1376 | } | |
1377 | /* Reinsert the escape prefix if required. */ | |
1378 | if (is_escaped) | |
1379 | { | |
1380 | target -= 2; | |
1381 | target[0] = '/'; | |
1382 | target[1] = ':'; | |
1383 | } | |
1384 | CORRECT_DIR_SEPS (target); | |
5e570b75 | 1385 | #endif /* DOS_NT */ |
4c3c22f3 | 1386 | |
5b5a2ea1 SM |
1387 | result = make_specified_string (target, -1, o - target, multibyte); |
1388 | } | |
beb402de KG |
1389 | |
1390 | /* Again look to see if the file name has special constructs in it | |
1391 | and perhaps call the corresponding file handler. This is needed | |
1392 | for filenames such as "/foo/../user@host:/bar/../baz". Expanding | |
1393 | the ".." component gives us "/user@host:/bar/../baz" which needs | |
1394 | to be expanded again. */ | |
1395 | handler = Ffind_file_name_handler (result, Qexpand_file_name); | |
1396 | if (!NILP (handler)) | |
1397 | return call3 (handler, Qexpand_file_name, result, default_directory); | |
1398 | ||
1399 | return result; | |
570d7624 | 1400 | } |
5e570b75 | 1401 | |
4887597a EZ |
1402 | #if 0 |
1403 | /* PLEASE DO NOT DELETE THIS COMMENTED-OUT VERSION! | |
1404 | This is the old version of expand-file-name, before it was thoroughly | |
1405 | rewritten for Emacs 10.31. We leave this version here commented-out, | |
1406 | because the code is very complex and likely to have subtle bugs. If | |
1407 | bugs _are_ found, it might be of interest to look at the old code and | |
1408 | see what did it do in the relevant situation. | |
1409 | ||
30f50381 GM |
1410 | Don't remove this code: it's true that it will be accessible |
1411 | from the repository, but a few years from deletion, people will | |
1412 | forget it is there. */ | |
4887597a EZ |
1413 | |
1414 | /* Changed this DEFUN to a DEAFUN, so as not to confuse `make-docfile'. */ | |
1415 | DEAFUN ("expand-file-name", Fexpand_file_name, Sexpand_file_name, 1, 2, 0, | |
1416 | "Convert FILENAME to absolute, and canonicalize it.\n\ | |
1417 | Second arg DEFAULT is directory to start with if FILENAME is relative\n\ | |
c70a4df6 | 1418 | \(does not start with slash); if DEFAULT is nil or missing,\n\ |
4887597a EZ |
1419 | the current buffer's value of default-directory is used.\n\ |
1420 | Filenames containing `.' or `..' as components are simplified;\n\ | |
1421 | initial `~/' expands to your home directory.\n\ | |
1422 | See also the function `substitute-in-file-name'.") | |
1423 | (name, defalt) | |
1424 | Lisp_Object name, defalt; | |
1425 | { | |
1426 | unsigned char *nm; | |
1427 | ||
1428 | register unsigned char *newdir, *p, *o; | |
1429 | int tlen; | |
1430 | unsigned char *target; | |
1431 | struct passwd *pw; | |
1432 | int lose; | |
4887597a | 1433 | |
b7826503 | 1434 | CHECK_STRING (name); |
d5db4077 | 1435 | nm = SDATA (name); |
4887597a EZ |
1436 | |
1437 | /* If nm is absolute, flush ...// and detect /./ and /../. | |
1438 | If no /./ or /../ we can return right away. */ | |
7c2fb837 | 1439 | if (nm[0] == '/') |
4887597a EZ |
1440 | { |
1441 | p = nm; | |
1442 | lose = 0; | |
1443 | while (*p) | |
1444 | { | |
1445 | if (p[0] == '/' && p[1] == '/' | |
4887597a EZ |
1446 | ) |
1447 | nm = p + 1; | |
1448 | if (p[0] == '/' && p[1] == '~') | |
1449 | nm = p + 1, lose = 1; | |
1450 | if (p[0] == '/' && p[1] == '.' | |
1451 | && (p[2] == '/' || p[2] == 0 | |
1452 | || (p[2] == '.' && (p[3] == '/' || p[3] == 0)))) | |
1453 | lose = 1; | |
4887597a EZ |
1454 | p++; |
1455 | } | |
1456 | if (!lose) | |
1457 | { | |
d5db4077 | 1458 | if (nm == SDATA (name)) |
4887597a EZ |
1459 | return name; |
1460 | return build_string (nm); | |
1461 | } | |
1462 | } | |
1463 | ||
1464 | /* Now determine directory to start with and put it in NEWDIR */ | |
1465 | ||
1466 | newdir = 0; | |
1467 | ||
1468 | if (nm[0] == '~') /* prefix ~ */ | |
7c2fb837 | 1469 | if (nm[1] == '/' || nm[1] == 0)/* ~/filename */ |
4887597a EZ |
1470 | { |
1471 | if (!(newdir = (unsigned char *) egetenv ("HOME"))) | |
1472 | newdir = (unsigned char *) ""; | |
1473 | nm++; | |
4887597a EZ |
1474 | } |
1475 | else /* ~user/filename */ | |
1476 | { | |
1477 | /* Get past ~ to user */ | |
1478 | unsigned char *user = nm + 1; | |
1479 | /* Find end of name. */ | |
1480 | unsigned char *ptr = (unsigned char *) index (user, '/'); | |
1481 | int len = ptr ? ptr - user : strlen (user); | |
4887597a EZ |
1482 | /* Copy the user name into temp storage. */ |
1483 | o = (unsigned char *) alloca (len + 1); | |
1484 | bcopy ((char *) user, o, len); | |
1485 | o[len] = 0; | |
1486 | ||
1487 | /* Look up the user name. */ | |
67c08d6c | 1488 | BLOCK_INPUT; |
4887597a | 1489 | pw = (struct passwd *) getpwnam (o + 1); |
67c08d6c | 1490 | UNBLOCK_INPUT; |
4887597a EZ |
1491 | if (!pw) |
1492 | error ("\"%s\" isn't a registered user", o + 1); | |
1493 | ||
1494 | newdir = (unsigned char *) pw->pw_dir; | |
1495 | ||
1496 | /* Discard the user name from NM. */ | |
1497 | nm += len; | |
1498 | } | |
1499 | ||
7c2fb837 | 1500 | if (nm[0] != '/' && !newdir) |
4887597a EZ |
1501 | { |
1502 | if (NILP (defalt)) | |
1503 | defalt = current_buffer->directory; | |
b7826503 | 1504 | CHECK_STRING (defalt); |
d5db4077 | 1505 | newdir = SDATA (defalt); |
4887597a EZ |
1506 | } |
1507 | ||
1508 | /* Now concatenate the directory and name to new space in the stack frame */ | |
1509 | ||
1510 | tlen = (newdir ? strlen (newdir) + 1 : 0) + strlen (nm) + 1; | |
1511 | target = (unsigned char *) alloca (tlen); | |
1512 | *target = 0; | |
1513 | ||
1514 | if (newdir) | |
1515 | { | |
4887597a EZ |
1516 | if (nm[0] == 0 || nm[0] == '/') |
1517 | strcpy (target, newdir); | |
1518 | else | |
4887597a EZ |
1519 | file_name_as_directory (target, newdir); |
1520 | } | |
1521 | ||
1522 | strcat (target, nm); | |
4887597a EZ |
1523 | |
1524 | /* Now canonicalize by removing /. and /foo/.. if they appear */ | |
1525 | ||
1526 | p = target; | |
1527 | o = target; | |
1528 | ||
1529 | while (*p) | |
1530 | { | |
4887597a EZ |
1531 | if (*p != '/') |
1532 | { | |
1533 | *o++ = *p++; | |
1534 | } | |
1535 | else if (!strncmp (p, "//", 2) | |
4887597a EZ |
1536 | ) |
1537 | { | |
1538 | o = target; | |
1539 | p++; | |
1540 | } | |
994a7262 RS |
1541 | else if (p[0] == '/' && p[1] == '.' |
1542 | && (p[2] == '/' || p[2] == 0)) | |
4887597a EZ |
1543 | p += 2; |
1544 | else if (!strncmp (p, "/..", 3) | |
1545 | /* `/../' is the "superroot" on certain file systems. */ | |
1546 | && o != target | |
1547 | && (p[3] == '/' || p[3] == 0)) | |
1548 | { | |
1549 | while (o != target && *--o != '/') | |
1550 | ; | |
4887597a EZ |
1551 | if (o == target && *o == '/') |
1552 | ++o; | |
1553 | p += 3; | |
1554 | } | |
1555 | else | |
1556 | { | |
1557 | *o++ = *p++; | |
1558 | } | |
4887597a EZ |
1559 | } |
1560 | ||
1561 | return make_string (target, o - target); | |
1562 | } | |
1563 | #endif | |
570d7624 | 1564 | \f |
c70a4df6 SM |
1565 | /* If /~ or // appears, discard everything through first slash. */ |
1566 | static int | |
1567 | file_name_absolute_p (filename) | |
1568 | const unsigned char *filename; | |
1569 | { | |
1570 | return | |
1571 | (IS_DIRECTORY_SEP (*filename) || *filename == '~' | |
c70a4df6 SM |
1572 | #ifdef DOS_NT |
1573 | || (IS_DRIVE (*filename) && IS_DEVICE_SEP (filename[1]) | |
1574 | && IS_DIRECTORY_SEP (filename[2])) | |
1575 | #endif | |
1576 | ); | |
1577 | } | |
1578 | ||
1579 | static unsigned char * | |
1580 | search_embedded_absfilename (nm, endp) | |
1581 | unsigned char *nm, *endp; | |
1582 | { | |
1583 | unsigned char *p, *s; | |
1584 | ||
1585 | for (p = nm + 1; p < endp; p++) | |
1586 | { | |
1587 | if ((0 | |
c70a4df6 SM |
1588 | || IS_DIRECTORY_SEP (p[-1])) |
1589 | && file_name_absolute_p (p) | |
e39a993c | 1590 | #if defined (WINDOWSNT) || defined(CYGWIN) |
c70a4df6 SM |
1591 | /* // at start of file name is meaningful in Apollo, |
1592 | WindowsNT and Cygwin systems. */ | |
f34574c6 | 1593 | && !(IS_DIRECTORY_SEP (p[0]) && p - 1 == nm) |
e39a993c | 1594 | #endif /* not (WINDOWSNT || CYGWIN) */ |
c70a4df6 SM |
1595 | ) |
1596 | { | |
7c2fb837 | 1597 | for (s = p; *s && (!IS_DIRECTORY_SEP (*s)); s++); |
c70a4df6 SM |
1598 | if (p[0] == '~' && s > p + 1) /* we've got "/~something/" */ |
1599 | { | |
1600 | unsigned char *o = alloca (s - p + 1); | |
1601 | struct passwd *pw; | |
1602 | bcopy (p, o, s - p); | |
1603 | o [s - p] = 0; | |
1604 | ||
1605 | /* If we have ~user and `user' exists, discard | |
1606 | everything up to ~. But if `user' does not exist, leave | |
1607 | ~user alone, it might be a literal file name. */ | |
67c08d6c YM |
1608 | BLOCK_INPUT; |
1609 | pw = getpwnam (o + 1); | |
1610 | UNBLOCK_INPUT; | |
1611 | if (pw) | |
c70a4df6 | 1612 | return p; |
c70a4df6 SM |
1613 | } |
1614 | else | |
1615 | return p; | |
1616 | } | |
1617 | } | |
1618 | return NULL; | |
1619 | } | |
1620 | ||
570d7624 | 1621 | DEFUN ("substitute-in-file-name", Fsubstitute_in_file_name, |
8c1a1077 PJ |
1622 | Ssubstitute_in_file_name, 1, 1, 0, |
1623 | doc: /* Substitute environment variables referred to in FILENAME. | |
1624 | `$FOO' where FOO is an environment variable name means to substitute | |
1625 | the value of that variable. The variable name should be terminated | |
1626 | with a character not a letter, digit or underscore; otherwise, enclose | |
1627 | the entire variable name in braces. | |
c68845e0 GM |
1628 | |
1629 | If `/~' appears, all of FILENAME through that `/' is discarded. | |
1630 | If `//' appears, everything up to and including the first of | |
1631 | those `/' is discarded. */) | |
8c1a1077 | 1632 | (filename) |
3b7f6e60 | 1633 | Lisp_Object filename; |
570d7624 JB |
1634 | { |
1635 | unsigned char *nm; | |
1636 | ||
1637 | register unsigned char *s, *p, *o, *x, *endp; | |
6bbd7a29 | 1638 | unsigned char *target = NULL; |
570d7624 JB |
1639 | int total = 0; |
1640 | int substituted = 0; | |
58aec0d6 | 1641 | int multibyte; |
570d7624 | 1642 | unsigned char *xnm; |
8ce069f5 | 1643 | Lisp_Object handler; |
570d7624 | 1644 | |
b7826503 | 1645 | CHECK_STRING (filename); |
570d7624 | 1646 | |
58aec0d6 JR |
1647 | multibyte = STRING_MULTIBYTE (filename); |
1648 | ||
8ce069f5 RS |
1649 | /* If the file name has special constructs in it, |
1650 | call the corresponding file handler. */ | |
3b7f6e60 | 1651 | handler = Ffind_file_name_handler (filename, Qsubstitute_in_file_name); |
8ce069f5 | 1652 | if (!NILP (handler)) |
3b7f6e60 | 1653 | return call2 (handler, Qsubstitute_in_file_name, filename); |
8ce069f5 | 1654 | |
58aec0d6 JR |
1655 | /* Always work on a copy of the string, in case GC happens during |
1656 | decode of environment variables, causing the original Lisp_String | |
1657 | data to be relocated. */ | |
0f3f018c CY |
1658 | nm = (unsigned char *) alloca (SBYTES (filename) + 1); |
1659 | bcopy (SDATA (filename), nm, SBYTES (filename) + 1); | |
1660 | ||
58aec0d6 | 1661 | #ifdef DOS_NT |
199607e4 | 1662 | CORRECT_DIR_SEPS (nm); |
d5db4077 | 1663 | substituted = (strcmp (nm, SDATA (filename)) != 0); |
a5a1cc06 | 1664 | #endif |
d5db4077 | 1665 | endp = nm + SBYTES (filename); |
570d7624 | 1666 | |
82330e7f | 1667 | /* If /~ or // appears, discard everything through first slash. */ |
c70a4df6 SM |
1668 | p = search_embedded_absfilename (nm, endp); |
1669 | if (p) | |
1670 | /* Start over with the new string, so we check the file-name-handler | |
1671 | again. Important with filenames like "/home/foo//:/hello///there" | |
1672 | which whould substitute to "/:/hello///there" rather than "/there". */ | |
1673 | return Fsubstitute_in_file_name | |
58aec0d6 | 1674 | (make_specified_string (p, -1, endp - p, multibyte)); |
570d7624 JB |
1675 | |
1676 | /* See if any variables are substituted into the string | |
1677 | and find the total length of their values in `total' */ | |
1678 | ||
1679 | for (p = nm; p != endp;) | |
1680 | if (*p != '$') | |
1681 | p++; | |
1682 | else | |
1683 | { | |
1684 | p++; | |
1685 | if (p == endp) | |
1686 | goto badsubst; | |
1687 | else if (*p == '$') | |
1688 | { | |
1689 | /* "$$" means a single "$" */ | |
1690 | p++; | |
1691 | total -= 1; | |
1692 | substituted = 1; | |
1693 | continue; | |
1694 | } | |
1695 | else if (*p == '{') | |
1696 | { | |
1697 | o = ++p; | |
1698 | while (p != endp && *p != '}') p++; | |
1699 | if (*p != '}') goto missingclose; | |
1700 | s = p; | |
1701 | } | |
1702 | else | |
1703 | { | |
1704 | o = p; | |
1705 | while (p != endp && (isalnum (*p) || *p == '_')) p++; | |
1706 | s = p; | |
1707 | } | |
1708 | ||
1709 | /* Copy out the variable name */ | |
1710 | target = (unsigned char *) alloca (s - o + 1); | |
1711 | strncpy (target, o, s - o); | |
1712 | target[s - o] = 0; | |
5e570b75 | 1713 | #ifdef DOS_NT |
4c3c22f3 | 1714 | strupr (target); /* $home == $HOME etc. */ |
5e570b75 | 1715 | #endif /* DOS_NT */ |
570d7624 JB |
1716 | |
1717 | /* Get variable value */ | |
1718 | o = (unsigned char *) egetenv (target); | |
8d2ced53 | 1719 | if (o) |
58aec0d6 JR |
1720 | { |
1721 | /* Don't try to guess a maximum length - UTF8 can use up to | |
1722 | four bytes per character. This code is unlikely to run | |
1723 | in a situation that requires performance, so decoding the | |
1724 | env variables twice should be acceptable. Note that | |
1725 | decoding may cause a garbage collect. */ | |
1726 | Lisp_Object orig, decoded; | |
1727 | orig = make_unibyte_string (o, strlen (o)); | |
1728 | decoded = DECODE_FILE (orig); | |
1729 | total += SBYTES (decoded); | |
8d2ced53 SM |
1730 | substituted = 1; |
1731 | } | |
1732 | else if (*p == '}') | |
1733 | goto badvar; | |
570d7624 JB |
1734 | } |
1735 | ||
1736 | if (!substituted) | |
3b7f6e60 | 1737 | return filename; |
570d7624 JB |
1738 | |
1739 | /* If substitution required, recopy the string and do it */ | |
1740 | /* Make space in stack frame for the new copy */ | |
d5db4077 | 1741 | xnm = (unsigned char *) alloca (SBYTES (filename) + total + 1); |
570d7624 JB |
1742 | x = xnm; |
1743 | ||
1744 | /* Copy the rest of the name through, replacing $ constructs with values */ | |
1745 | for (p = nm; *p;) | |
1746 | if (*p != '$') | |
1747 | *x++ = *p++; | |
1748 | else | |
1749 | { | |
1750 | p++; | |
1751 | if (p == endp) | |
1752 | goto badsubst; | |
1753 | else if (*p == '$') | |
1754 | { | |
1755 | *x++ = *p++; | |
1756 | continue; | |
1757 | } | |
1758 | else if (*p == '{') | |
1759 | { | |
1760 | o = ++p; | |
1761 | while (p != endp && *p != '}') p++; | |
1762 | if (*p != '}') goto missingclose; | |
1763 | s = p++; | |
1764 | } | |
1765 | else | |
1766 | { | |
1767 | o = p; | |
1768 | while (p != endp && (isalnum (*p) || *p == '_')) p++; | |
1769 | s = p; | |
1770 | } | |
1771 | ||
1772 | /* Copy out the variable name */ | |
1773 | target = (unsigned char *) alloca (s - o + 1); | |
1774 | strncpy (target, o, s - o); | |
1775 | target[s - o] = 0; | |
5e570b75 | 1776 | #ifdef DOS_NT |
4c3c22f3 | 1777 | strupr (target); /* $home == $HOME etc. */ |
5e570b75 | 1778 | #endif /* DOS_NT */ |
570d7624 JB |
1779 | |
1780 | /* Get variable value */ | |
1781 | o = (unsigned char *) egetenv (target); | |
570d7624 | 1782 | if (!o) |
8d2ced53 SM |
1783 | { |
1784 | *x++ = '$'; | |
1785 | strcpy (x, target); x+= strlen (target); | |
1786 | } | |
60d67b83 RS |
1787 | else |
1788 | { | |
58aec0d6 JR |
1789 | Lisp_Object orig, decoded; |
1790 | int orig_length, decoded_length; | |
1791 | orig_length = strlen (o); | |
1792 | orig = make_unibyte_string (o, orig_length); | |
1793 | decoded = DECODE_FILE (orig); | |
1794 | decoded_length = SBYTES (decoded); | |
1795 | strncpy (x, SDATA (decoded), decoded_length); | |
1796 | x += decoded_length; | |
1797 | ||
1798 | /* If environment variable needed decoding, return value | |
1799 | needs to be multibyte. */ | |
1800 | if (decoded_length != orig_length | |
1801 | || strncmp (SDATA (decoded), o, orig_length)) | |
1802 | multibyte = 1; | |
60d67b83 | 1803 | } |
570d7624 JB |
1804 | } |
1805 | ||
1806 | *x = 0; | |
1807 | ||
82330e7f | 1808 | /* If /~ or // appears, discard everything through first slash. */ |
c70a4df6 SM |
1809 | while ((p = search_embedded_absfilename (xnm, x))) |
1810 | /* This time we do not start over because we've already expanded envvars | |
1811 | and replaced $$ with $. Maybe we should start over as well, but we'd | |
1812 | need to quote some $ to $$ first. */ | |
1813 | xnm = p; | |
570d7624 | 1814 | |
58aec0d6 | 1815 | return make_specified_string (xnm, -1, x - xnm, multibyte); |
570d7624 JB |
1816 | |
1817 | badsubst: | |
1818 | error ("Bad format environment-variable substitution"); | |
1819 | missingclose: | |
1820 | error ("Missing \"}\" in environment-variable substitution"); | |
1821 | badvar: | |
1822 | error ("Substituting nonexistent environment variable \"%s\"", target); | |
1823 | ||
1824 | /* NOTREACHED */ | |
6bbd7a29 | 1825 | return Qnil; |
570d7624 JB |
1826 | } |
1827 | \f | |
067ffa38 | 1828 | /* A slightly faster and more convenient way to get |
298b760e | 1829 | (directory-file-name (expand-file-name FOO)). */ |
067ffa38 | 1830 | |
570d7624 JB |
1831 | Lisp_Object |
1832 | expand_and_dir_to_file (filename, defdir) | |
1833 | Lisp_Object filename, defdir; | |
1834 | { | |
199607e4 | 1835 | register Lisp_Object absname; |
570d7624 | 1836 | |
199607e4 | 1837 | absname = Fexpand_file_name (filename, defdir); |
7c2fb837 | 1838 | |
199607e4 | 1839 | /* Remove final slash, if any (unless this is the root dir). |
570d7624 | 1840 | stat behaves differently depending! */ |
d5db4077 KR |
1841 | if (SCHARS (absname) > 1 |
1842 | && IS_DIRECTORY_SEP (SREF (absname, SBYTES (absname) - 1)) | |
1843 | && !IS_DEVICE_SEP (SREF (absname, SBYTES (absname)-2))) | |
ddc61f46 | 1844 | /* We cannot take shortcuts; they might be wrong for magic file names. */ |
199607e4 | 1845 | absname = Fdirectory_file_name (absname); |
199607e4 | 1846 | return absname; |
570d7624 JB |
1847 | } |
1848 | \f | |
3ed15d97 RS |
1849 | /* Signal an error if the file ABSNAME already exists. |
1850 | If INTERACTIVE is nonzero, ask the user whether to proceed, | |
1851 | and bypass the error if the user says to go ahead. | |
1852 | QUERYSTRING is a name for the action that is being considered | |
1853 | to alter the file. | |
de1d0127 | 1854 | |
3ed15d97 | 1855 | *STATPTR is used to store the stat information if the file exists. |
de1d0127 | 1856 | If the file does not exist, STATPTR->st_mode is set to 0. |
b8b29dc9 RS |
1857 | If STATPTR is null, we don't store into it. |
1858 | ||
1859 | If QUICK is nonzero, we ask for y or n, not yes or no. */ | |
3ed15d97 | 1860 | |
c4df73f9 | 1861 | void |
b8b29dc9 | 1862 | barf_or_query_if_file_exists (absname, querystring, interactive, statptr, quick) |
570d7624 JB |
1863 | Lisp_Object absname; |
1864 | unsigned char *querystring; | |
1865 | int interactive; | |
3ed15d97 | 1866 | struct stat *statptr; |
b8b29dc9 | 1867 | int quick; |
570d7624 | 1868 | { |
643c73b9 | 1869 | register Lisp_Object tem, encoded_filename; |
4018b5ef | 1870 | struct stat statbuf; |
570d7624 JB |
1871 | struct gcpro gcpro1; |
1872 | ||
643c73b9 RS |
1873 | encoded_filename = ENCODE_FILE (absname); |
1874 | ||
4018b5ef RS |
1875 | /* stat is a good way to tell whether the file exists, |
1876 | regardless of what access permissions it has. */ | |
f72b5416 | 1877 | if (lstat (SDATA (encoded_filename), &statbuf) >= 0) |
570d7624 JB |
1878 | { |
1879 | if (! interactive) | |
24b1ddad KS |
1880 | xsignal2 (Qfile_already_exists, |
1881 | build_string ("File already exists"), absname); | |
570d7624 | 1882 | GCPRO1 (absname); |
67e8e2b8 RS |
1883 | tem = format2 ("File %s already exists; %s anyway? ", |
1884 | absname, build_string (querystring)); | |
b8b29dc9 RS |
1885 | if (quick) |
1886 | tem = Fy_or_n_p (tem); | |
1887 | else | |
1888 | tem = do_yes_or_no_p (tem); | |
570d7624 | 1889 | UNGCPRO; |
265a9e55 | 1890 | if (NILP (tem)) |
24b1ddad KS |
1891 | xsignal2 (Qfile_already_exists, |
1892 | build_string ("File already exists"), absname); | |
3ed15d97 RS |
1893 | if (statptr) |
1894 | *statptr = statbuf; | |
1895 | } | |
1896 | else | |
1897 | { | |
1898 | if (statptr) | |
1899 | statptr->st_mode = 0; | |
570d7624 JB |
1900 | } |
1901 | return; | |
1902 | } | |
1903 | ||
574c05e2 | 1904 | DEFUN ("copy-file", Fcopy_file, Scopy_file, 2, 6, |
7c0f6118 | 1905 | "fCopy file: \nGCopy %s to file: \np\nP", |
8c1a1077 PJ |
1906 | doc: /* Copy FILE to NEWNAME. Both args must be strings. |
1907 | If NEWNAME names a directory, copy FILE there. | |
795c20df CY |
1908 | |
1909 | This function always sets the file modes of the output file to match | |
1910 | the input file. | |
1911 | ||
1912 | The optional third argument OK-IF-ALREADY-EXISTS specifies what to do | |
1913 | if file NEWNAME already exists. If OK-IF-ALREADY-EXISTS is nil, we | |
1914 | signal a `file-already-exists' error without overwriting. If | |
1915 | OK-IF-ALREADY-EXISTS is a number, we request confirmation from the user | |
1916 | about overwriting; this is what happens in interactive use with M-x. | |
1917 | Any other value for OK-IF-ALREADY-EXISTS means to overwrite the | |
1918 | existing file. | |
c50f15d0 | 1919 | |
7f08b80e | 1920 | Fourth arg KEEP-TIME non-nil means give the output file the same |
8c1a1077 | 1921 | last-modified time as the old one. (This works on only some systems.) |
c50f15d0 | 1922 | |
7fce7dfe EZ |
1923 | A prefix arg makes KEEP-TIME non-nil. |
1924 | ||
586702ce | 1925 | If PRESERVE-UID-GID is non-nil, we try to transfer the |
574c05e2 KK |
1926 | uid and gid of FILE to NEWNAME. |
1927 | ||
1928 | If PRESERVE-SELINUX-CONTEXT is non-nil and SELinux is enabled | |
1929 | on the system, we copy the SELinux context of FILE to NEWNAME. */) | |
1930 | (file, newname, ok_if_already_exists, keep_time, preserve_uid_gid, preserve_selinux_context) | |
795c20df | 1931 | Lisp_Object file, newname, ok_if_already_exists, keep_time; |
574c05e2 | 1932 | Lisp_Object preserve_uid_gid, preserve_selinux_context; |
570d7624 JB |
1933 | { |
1934 | int ifd, ofd, n; | |
1935 | char buf[16 * 1024]; | |
3ed15d97 | 1936 | struct stat st, out_st; |
32f4334d | 1937 | Lisp_Object handler; |
b1d1b865 | 1938 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; |
aed13378 | 1939 | int count = SPECPDL_INDEX (); |
f73b0ada | 1940 | int input_file_statable_p; |
b1d1b865 | 1941 | Lisp_Object encoded_file, encoded_newname; |
574c05e2 KK |
1942 | #if HAVE_LIBSELINUX |
1943 | security_context_t con; | |
1944 | int fail, conlength = 0; | |
1945 | #endif | |
570d7624 | 1946 | |
b1d1b865 RS |
1947 | encoded_file = encoded_newname = Qnil; |
1948 | GCPRO4 (file, newname, encoded_file, encoded_newname); | |
b7826503 PJ |
1949 | CHECK_STRING (file); |
1950 | CHECK_STRING (newname); | |
b1d1b865 | 1951 | |
a9d14e54 | 1952 | if (!NILP (Ffile_directory_p (newname))) |
6b61353c | 1953 | newname = Fexpand_file_name (Ffile_name_nondirectory (file), newname); |
a9d14e54 GM |
1954 | else |
1955 | newname = Fexpand_file_name (newname, Qnil); | |
1956 | ||
3b7f6e60 | 1957 | file = Fexpand_file_name (file, Qnil); |
32f4334d | 1958 | |
0bf2eed2 | 1959 | /* If the input file name has special constructs in it, |
32f4334d | 1960 | call the corresponding file handler. */ |
3b7f6e60 | 1961 | handler = Ffind_file_name_handler (file, Qcopy_file); |
0bf2eed2 | 1962 | /* Likewise for output file name. */ |
51cf6d37 | 1963 | if (NILP (handler)) |
49307295 | 1964 | handler = Ffind_file_name_handler (newname, Qcopy_file); |
32f4334d | 1965 | if (!NILP (handler)) |
574c05e2 KK |
1966 | RETURN_UNGCPRO (call7 (handler, Qcopy_file, file, newname, |
1967 | ok_if_already_exists, keep_time, preserve_uid_gid, | |
1968 | preserve_selinux_context)); | |
32f4334d | 1969 | |
b1d1b865 RS |
1970 | encoded_file = ENCODE_FILE (file); |
1971 | encoded_newname = ENCODE_FILE (newname); | |
1972 | ||
265a9e55 | 1973 | if (NILP (ok_if_already_exists) |
93c30b5f | 1974 | || INTEGERP (ok_if_already_exists)) |
2f868094 | 1975 | barf_or_query_if_file_exists (newname, "copy to it", |
b8b29dc9 | 1976 | INTEGERP (ok_if_already_exists), &out_st, 0); |
d5db4077 | 1977 | else if (stat (SDATA (encoded_newname), &out_st) < 0) |
3ed15d97 | 1978 | out_st.st_mode = 0; |
570d7624 | 1979 | |
e8691c59 | 1980 | #ifdef WINDOWSNT |
d5db4077 | 1981 | if (!CopyFile (SDATA (encoded_file), |
efdc16c9 | 1982 | SDATA (encoded_newname), |
e8691c59 GM |
1983 | FALSE)) |
1984 | report_file_error ("Copying file", Fcons (file, Fcons (newname, Qnil))); | |
8b53dc06 JR |
1985 | /* CopyFile retains the timestamp by default. */ |
1986 | else if (NILP (keep_time)) | |
e8691c59 GM |
1987 | { |
1988 | EMACS_TIME now; | |
ad497129 JR |
1989 | DWORD attributes; |
1990 | char * filename; | |
1991 | ||
e8691c59 | 1992 | EMACS_GET_TIME (now); |
d5db4077 | 1993 | filename = SDATA (encoded_newname); |
ad497129 JR |
1994 | |
1995 | /* Ensure file is writable while its modified time is set. */ | |
1996 | attributes = GetFileAttributes (filename); | |
02cca86b | 1997 | SetFileAttributes (filename, attributes & ~FILE_ATTRIBUTE_READONLY); |
ad497129 JR |
1998 | if (set_file_times (filename, now, now)) |
1999 | { | |
2000 | /* Restore original attributes. */ | |
2001 | SetFileAttributes (filename, attributes); | |
24b1ddad KS |
2002 | xsignal2 (Qfile_date_error, |
2003 | build_string ("Cannot set file date"), newname); | |
ad497129 JR |
2004 | } |
2005 | /* Restore original attributes. */ | |
2006 | SetFileAttributes (filename, attributes); | |
e8691c59 GM |
2007 | } |
2008 | #else /* not WINDOWSNT */ | |
13336908 | 2009 | immediate_quit = 1; |
d5db4077 | 2010 | ifd = emacs_open (SDATA (encoded_file), O_RDONLY, 0); |
13336908 RS |
2011 | immediate_quit = 0; |
2012 | ||
570d7624 | 2013 | if (ifd < 0) |
3b7f6e60 | 2014 | report_file_error ("Opening input file", Fcons (file, Qnil)); |
570d7624 | 2015 | |
b5148e85 RS |
2016 | record_unwind_protect (close_file_unwind, make_number (ifd)); |
2017 | ||
f73b0ada BF |
2018 | /* We can only copy regular files and symbolic links. Other files are not |
2019 | copyable by us. */ | |
2020 | input_file_statable_p = (fstat (ifd, &st) >= 0); | |
2021 | ||
574c05e2 KK |
2022 | #if HAVE_LIBSELINUX |
2023 | if (!NILP (preserve_selinux_context) && is_selinux_enabled ()) | |
2024 | { | |
2025 | conlength = fgetfilecon (ifd, &con); | |
2026 | if (conlength == -1) | |
2027 | report_file_error ("Doing fgetfilecon", Fcons (file, Qnil)); | |
2028 | } | |
2029 | #endif | |
2030 | ||
3ed15d97 RS |
2031 | if (out_st.st_mode != 0 |
2032 | && st.st_dev == out_st.st_dev && st.st_ino == out_st.st_ino) | |
2033 | { | |
2034 | errno = 0; | |
2035 | report_file_error ("Input and output files are the same", | |
3b7f6e60 | 2036 | Fcons (file, Fcons (newname, Qnil))); |
3ed15d97 | 2037 | } |
3ed15d97 | 2038 | |
f73b0ada BF |
2039 | #if defined (S_ISREG) && defined (S_ISLNK) |
2040 | if (input_file_statable_p) | |
2041 | { | |
2042 | if (!(S_ISREG (st.st_mode)) && !(S_ISLNK (st.st_mode))) | |
2043 | { | |
2044 | #if defined (EISDIR) | |
2045 | /* Get a better looking error message. */ | |
2046 | errno = EISDIR; | |
2047 | #endif /* EISDIR */ | |
3b7f6e60 | 2048 | report_file_error ("Non-regular file", Fcons (file, Qnil)); |
f73b0ada BF |
2049 | } |
2050 | } | |
2051 | #endif /* S_ISREG && S_ISLNK */ | |
2052 | ||
4c3c22f3 RS |
2053 | #ifdef MSDOS |
2054 | /* System's default file type was set to binary by _fmode in emacs.c. */ | |
c50f15d0 | 2055 | ofd = emacs_open (SDATA (encoded_newname), |
7fce7dfe | 2056 | O_WRONLY | O_TRUNC | O_CREAT |
795c20df | 2057 | | (NILP (ok_if_already_exists) ? O_EXCL : 0), |
c50f15d0 RS |
2058 | S_IREAD | S_IWRITE); |
2059 | #else /* not MSDOS */ | |
2060 | ofd = emacs_open (SDATA (encoded_newname), | |
2061 | O_WRONLY | O_TRUNC | O_CREAT | |
795c20df | 2062 | | (NILP (ok_if_already_exists) ? O_EXCL : 0), |
c50f15d0 | 2063 | 0666); |
4c3c22f3 | 2064 | #endif /* not MSDOS */ |
570d7624 | 2065 | if (ofd < 0) |
3ed15d97 | 2066 | report_file_error ("Opening output file", Fcons (newname, Qnil)); |
b5148e85 RS |
2067 | |
2068 | record_unwind_protect (close_file_unwind, make_number (ofd)); | |
570d7624 | 2069 | |
b5148e85 RS |
2070 | immediate_quit = 1; |
2071 | QUIT; | |
68c45bf0 PE |
2072 | while ((n = emacs_read (ifd, buf, sizeof buf)) > 0) |
2073 | if (emacs_write (ofd, buf, n) != n) | |
3ed15d97 | 2074 | report_file_error ("I/O error", Fcons (newname, Qnil)); |
b5148e85 | 2075 | immediate_quit = 0; |
570d7624 | 2076 | |
b016179b EZ |
2077 | #ifndef MSDOS |
2078 | /* Preserve the original file modes, and if requested, also its | |
2079 | owner and group. */ | |
586702ce RS |
2080 | if (input_file_statable_p) |
2081 | { | |
b016179b EZ |
2082 | if (! NILP (preserve_uid_gid)) |
2083 | fchown (ofd, st.st_uid, st.st_gid); | |
586702ce | 2084 | fchmod (ofd, st.st_mode & 07777); |
586702ce | 2085 | } |
b016179b | 2086 | #endif /* not MSDOS */ |
586702ce | 2087 | |
574c05e2 KK |
2088 | #if HAVE_LIBSELINUX |
2089 | if (conlength > 0) | |
2090 | { | |
2091 | /* Set the modified context back to the file. */ | |
2092 | fail = fsetfilecon (ofd, con); | |
2093 | if (fail) | |
2094 | report_file_error ("Doing fsetfilecon", Fcons (newname, Qnil)); | |
2095 | ||
2096 | freecon (con); | |
2097 | } | |
2098 | #endif | |
2099 | ||
5acac34e | 2100 | /* Closing the output clobbers the file times on some systems. */ |
68c45bf0 | 2101 | if (emacs_close (ofd) < 0) |
5acac34e RS |
2102 | report_file_error ("I/O error", Fcons (newname, Qnil)); |
2103 | ||
f73b0ada | 2104 | if (input_file_statable_p) |
570d7624 | 2105 | { |
8ca6602c | 2106 | if (!NILP (keep_time)) |
570d7624 | 2107 | { |
de5bf5d3 JB |
2108 | EMACS_TIME atime, mtime; |
2109 | EMACS_SET_SECS_USECS (atime, st.st_atime, 0); | |
2110 | EMACS_SET_SECS_USECS (mtime, st.st_mtime, 0); | |
d5db4077 | 2111 | if (set_file_times (SDATA (encoded_newname), |
b1d1b865 | 2112 | atime, mtime)) |
24b1ddad KS |
2113 | xsignal2 (Qfile_date_error, |
2114 | build_string ("Cannot set file date"), newname); | |
570d7624 | 2115 | } |
570d7624 JB |
2116 | } |
2117 | ||
68c45bf0 | 2118 | emacs_close (ifd); |
b016179b | 2119 | |
ed68db4d | 2120 | #ifdef MSDOS |
b016179b EZ |
2121 | if (input_file_statable_p) |
2122 | { | |
2123 | /* In DJGPP v2.0 and later, fstat usually returns true file mode bits, | |
2124 | and if it can't, it tells so. Otherwise, under MSDOS we usually | |
2125 | get only the READ bit, which will make the copied file read-only, | |
2126 | so it's better not to chmod at all. */ | |
2127 | if ((_djstat_flags & _STFAIL_WRITEBIT) == 0) | |
2128 | chmod (SDATA (encoded_newname), st.st_mode & 07777); | |
2129 | } | |
ed68db4d | 2130 | #endif /* MSDOS */ |
b016179b | 2131 | #endif /* not WINDOWSNT */ |
5acac34e | 2132 | |
b5148e85 RS |
2133 | /* Discard the unwind protects. */ |
2134 | specpdl_ptr = specpdl + count; | |
2135 | ||
570d7624 JB |
2136 | UNGCPRO; |
2137 | return Qnil; | |
2138 | } | |
385b6cc7 | 2139 | \f |
9bbe01fb | 2140 | DEFUN ("make-directory-internal", Fmake_directory_internal, |
353cfc19 | 2141 | Smake_directory_internal, 1, 1, 0, |
8c1a1077 PJ |
2142 | doc: /* Create a new directory named DIRECTORY. */) |
2143 | (directory) | |
3b7f6e60 | 2144 | Lisp_Object directory; |
570d7624 | 2145 | { |
19290c65 | 2146 | const unsigned char *dir; |
32f4334d | 2147 | Lisp_Object handler; |
b1d1b865 | 2148 | Lisp_Object encoded_dir; |
570d7624 | 2149 | |
b7826503 | 2150 | CHECK_STRING (directory); |
3b7f6e60 | 2151 | directory = Fexpand_file_name (directory, Qnil); |
32f4334d | 2152 | |
3b7f6e60 | 2153 | handler = Ffind_file_name_handler (directory, Qmake_directory_internal); |
32f4334d | 2154 | if (!NILP (handler)) |
3b7f6e60 | 2155 | return call2 (handler, Qmake_directory_internal, directory); |
9bbe01fb | 2156 | |
b1d1b865 RS |
2157 | encoded_dir = ENCODE_FILE (directory); |
2158 | ||
d5db4077 | 2159 | dir = SDATA (encoded_dir); |
570d7624 | 2160 | |
5e570b75 RS |
2161 | #ifdef WINDOWSNT |
2162 | if (mkdir (dir) != 0) | |
2163 | #else | |
570d7624 | 2164 | if (mkdir (dir, 0777) != 0) |
5e570b75 | 2165 | #endif |
a9f2aeae | 2166 | report_file_error ("Creating directory", list1 (directory)); |
570d7624 | 2167 | |
32f4334d | 2168 | return Qnil; |
570d7624 JB |
2169 | } |
2170 | ||
9d8f3bd9 MA |
2171 | DEFUN ("delete-directory-internal", Fdelete_directory_internal, |
2172 | Sdelete_directory_internal, 1, 1, 0, | |
efdc16c9 | 2173 | doc: /* Delete the directory named DIRECTORY. Does not follow symlinks. */) |
8c1a1077 | 2174 | (directory) |
3b7f6e60 | 2175 | Lisp_Object directory; |
570d7624 | 2176 | { |
19290c65 | 2177 | const unsigned char *dir; |
32f4334d | 2178 | Lisp_Object handler; |
b1d1b865 | 2179 | Lisp_Object encoded_dir; |
570d7624 | 2180 | |
b7826503 | 2181 | CHECK_STRING (directory); |
3b7f6e60 | 2182 | directory = Fdirectory_file_name (Fexpand_file_name (directory, Qnil)); |
b1d1b865 | 2183 | encoded_dir = ENCODE_FILE (directory); |
d5db4077 | 2184 | dir = SDATA (encoded_dir); |
b1d1b865 | 2185 | |
570d7624 | 2186 | if (rmdir (dir) != 0) |
a9f2aeae | 2187 | report_file_error ("Removing directory", list1 (directory)); |
570d7624 JB |
2188 | |
2189 | return Qnil; | |
2190 | } | |
2191 | ||
2e2bbddb | 2192 | DEFUN ("delete-file", Fdelete_file, Sdelete_file, 1, 2, |
f1a5d776 CY |
2193 | "(list (read-file-name \ |
2194 | (if (and delete-by-moving-to-trash (null current-prefix-arg)) \ | |
2195 | \"Move file to trash: \" \"Delete file: \") \ | |
2196 | nil default-directory (confirm-nonexistent-file-or-buffer)) \ | |
2197 | (null current-prefix-arg))", | |
efdc16c9 | 2198 | doc: /* Delete file named FILENAME. If it is a symlink, remove the symlink. |
53967e09 | 2199 | If file has multiple names, it continues to exist with the other names. |
f1a5d776 CY |
2200 | TRASH non-nil means to trash the file instead of deleting, provided |
2201 | `delete-by-moving-to-trash' is non-nil. | |
53967e09 | 2202 | |
f1a5d776 CY |
2203 | When called interactively, TRASH is t if no prefix argument is given. |
2204 | With a prefix argument, TRASH is nil. */) | |
2205 | (filename, trash) | |
570d7624 | 2206 | Lisp_Object filename; |
f1a5d776 | 2207 | Lisp_Object trash; |
570d7624 | 2208 | { |
32f4334d | 2209 | Lisp_Object handler; |
b1d1b865 | 2210 | Lisp_Object encoded_file; |
efdc16c9 | 2211 | struct gcpro gcpro1; |
b1d1b865 | 2212 | |
efdc16c9 | 2213 | GCPRO1 (filename); |
b4bd27c5 RS |
2214 | if (!NILP (Ffile_directory_p (filename)) |
2215 | && NILP (Ffile_symlink_p (filename))) | |
24b1ddad KS |
2216 | xsignal2 (Qfile_error, |
2217 | build_string ("Removing old name: is a directory"), | |
2218 | filename); | |
efdc16c9 | 2219 | UNGCPRO; |
570d7624 | 2220 | filename = Fexpand_file_name (filename, Qnil); |
32f4334d | 2221 | |
49307295 | 2222 | handler = Ffind_file_name_handler (filename, Qdelete_file); |
32f4334d | 2223 | if (!NILP (handler)) |
8a9b0da9 | 2224 | return call2 (handler, Qdelete_file, filename); |
32f4334d | 2225 | |
f1a5d776 | 2226 | if (delete_by_moving_to_trash && !NILP (trash)) |
6cf29fe8 JR |
2227 | return call1 (Qmove_file_to_trash, filename); |
2228 | ||
b1d1b865 RS |
2229 | encoded_file = ENCODE_FILE (filename); |
2230 | ||
d5db4077 | 2231 | if (0 > unlink (SDATA (encoded_file))) |
a9f2aeae | 2232 | report_file_error ("Removing old name", list1 (filename)); |
8a9b0da9 | 2233 | return Qnil; |
570d7624 JB |
2234 | } |
2235 | ||
385b6cc7 RS |
2236 | static Lisp_Object |
2237 | internal_delete_file_1 (ignore) | |
2238 | Lisp_Object ignore; | |
2239 | { | |
2240 | return Qt; | |
2241 | } | |
2242 | ||
53967e09 | 2243 | /* Delete file FILENAME, returning 1 if successful and 0 if failed. |
f1a5d776 | 2244 | This ignores `delete-by-moving-to-trash'. */ |
385b6cc7 RS |
2245 | |
2246 | int | |
f1a5d776 | 2247 | internal_delete_file (Lisp_Object filename) |
385b6cc7 | 2248 | { |
a3911e8c | 2249 | Lisp_Object tem; |
53967e09 | 2250 | |
f1a5d776 | 2251 | tem = internal_condition_case_2 (Fdelete_file, filename, Qnil, |
a3911e8c KR |
2252 | Qt, internal_delete_file_1); |
2253 | return NILP (tem); | |
385b6cc7 RS |
2254 | } |
2255 | \f | |
570d7624 | 2256 | DEFUN ("rename-file", Frename_file, Srename_file, 2, 3, |
7c0f6118 | 2257 | "fRename file: \nGRename %s to file: \np", |
a4e03fe5 | 2258 | doc: /* Rename FILE as NEWNAME. Both args must be strings. |
8c1a1077 PJ |
2259 | If file has names other than FILE, it continues to have those names. |
2260 | Signals a `file-already-exists' error if a file NEWNAME already exists | |
2261 | unless optional third argument OK-IF-ALREADY-EXISTS is non-nil. | |
2262 | A number as third arg means request confirmation if NEWNAME already exists. | |
2263 | This is what happens in interactive use with M-x. */) | |
2264 | (file, newname, ok_if_already_exists) | |
3b7f6e60 | 2265 | Lisp_Object file, newname, ok_if_already_exists; |
570d7624 | 2266 | { |
32f4334d | 2267 | Lisp_Object handler; |
f72b5416 JD |
2268 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5; |
2269 | Lisp_Object encoded_file, encoded_newname, symlink_target; | |
570d7624 | 2270 | |
f72b5416 JD |
2271 | symlink_target = encoded_file = encoded_newname = Qnil; |
2272 | GCPRO5 (file, newname, encoded_file, encoded_newname, symlink_target); | |
b7826503 PJ |
2273 | CHECK_STRING (file); |
2274 | CHECK_STRING (newname); | |
3b7f6e60 | 2275 | file = Fexpand_file_name (file, Qnil); |
1ffc5c90 | 2276 | |
f83caf70 EZ |
2277 | if ((!NILP (Ffile_directory_p (newname))) |
2278 | #ifdef DOS_NT | |
2279 | /* If the file names are identical but for the case, | |
2280 | don't attempt to move directory to itself. */ | |
2281 | && (NILP (Fstring_equal (Fdowncase (file), Fdowncase (newname)))) | |
2282 | #endif | |
2283 | ) | |
8719abec CY |
2284 | { |
2285 | Lisp_Object fname = NILP (Ffile_directory_p (file)) | |
2286 | ? file : Fdirectory_file_name (file); | |
2287 | newname = Fexpand_file_name (Ffile_name_nondirectory (fname), newname); | |
2288 | } | |
1ffc5c90 RS |
2289 | else |
2290 | newname = Fexpand_file_name (newname, Qnil); | |
32f4334d RS |
2291 | |
2292 | /* If the file name has special constructs in it, | |
2293 | call the corresponding file handler. */ | |
3b7f6e60 | 2294 | handler = Ffind_file_name_handler (file, Qrename_file); |
51cf6d37 | 2295 | if (NILP (handler)) |
49307295 | 2296 | handler = Ffind_file_name_handler (newname, Qrename_file); |
32f4334d | 2297 | if (!NILP (handler)) |
36712b0a | 2298 | RETURN_UNGCPRO (call4 (handler, Qrename_file, |
3b7f6e60 | 2299 | file, newname, ok_if_already_exists)); |
32f4334d | 2300 | |
b1d1b865 RS |
2301 | encoded_file = ENCODE_FILE (file); |
2302 | encoded_newname = ENCODE_FILE (newname); | |
2303 | ||
bc77278f EZ |
2304 | #ifdef DOS_NT |
2305 | /* If the file names are identical but for the case, don't ask for | |
2306 | confirmation: they simply want to change the letter-case of the | |
2307 | file name. */ | |
2308 | if (NILP (Fstring_equal (Fdowncase (file), Fdowncase (newname)))) | |
2309 | #endif | |
265a9e55 | 2310 | if (NILP (ok_if_already_exists) |
93c30b5f | 2311 | || INTEGERP (ok_if_already_exists)) |
2f868094 | 2312 | barf_or_query_if_file_exists (newname, "rename to it", |
b8b29dc9 | 2313 | INTEGERP (ok_if_already_exists), 0, 0); |
d5db4077 | 2314 | if (0 > rename (SDATA (encoded_file), SDATA (encoded_newname))) |
570d7624 JB |
2315 | { |
2316 | if (errno == EXDEV) | |
2317 | { | |
6bddfc97 | 2318 | int count; |
440c7d00 | 2319 | #ifdef S_IFLNK |
f72b5416 | 2320 | symlink_target = Ffile_symlink_p (file); |
440c7d00 JD |
2321 | if (! NILP (symlink_target)) |
2322 | Fmake_symbolic_link (symlink_target, newname, | |
f59abab9 | 2323 | NILP (ok_if_already_exists) ? Qnil : Qt); |
440c7d00 JD |
2324 | else |
2325 | #endif | |
b242dbfc | 2326 | if (!NILP (Ffile_directory_p (file))) |
8719abec CY |
2327 | call4 (Qcopy_directory, file, newname, Qt, Qnil); |
2328 | else | |
2329 | /* We have already prompted if it was an integer, so don't | |
2330 | have copy-file prompt again. */ | |
586702ce | 2331 | Fcopy_file (file, newname, |
586702ce | 2332 | NILP (ok_if_already_exists) ? Qnil : Qt, |
574c05e2 | 2333 | Qt, Qt, Qt); |
d550c425 | 2334 | |
6bddfc97 | 2335 | count = SPECPDL_INDEX (); |
d2b66acf | 2336 | specbind (Qdelete_by_moving_to_trash, Qnil); |
8fab2362 CY |
2337 | |
2338 | if (!NILP (Ffile_directory_p (file)) | |
2339 | #ifdef S_IFLNK | |
2340 | && NILP (symlink_target) | |
2341 | #endif | |
2342 | ) | |
8719abec CY |
2343 | call2 (Qdelete_directory, file, Qt); |
2344 | else | |
f1a5d776 | 2345 | Fdelete_file (file, Qnil); |
6bddfc97 | 2346 | unbind_to (count, Qnil); |
570d7624 JB |
2347 | } |
2348 | else | |
a9f2aeae | 2349 | report_file_error ("Renaming", list2 (file, newname)); |
570d7624 JB |
2350 | } |
2351 | UNGCPRO; | |
2352 | return Qnil; | |
2353 | } | |
2354 | ||
2355 | DEFUN ("add-name-to-file", Fadd_name_to_file, Sadd_name_to_file, 2, 3, | |
7c0f6118 | 2356 | "fAdd name to file: \nGName to add to %s: \np", |
a4e03fe5 | 2357 | doc: /* Give FILE additional name NEWNAME. Both args must be strings. |
8c1a1077 PJ |
2358 | Signals a `file-already-exists' error if a file NEWNAME already exists |
2359 | unless optional third argument OK-IF-ALREADY-EXISTS is non-nil. | |
2360 | A number as third arg means request confirmation if NEWNAME already exists. | |
2361 | This is what happens in interactive use with M-x. */) | |
2362 | (file, newname, ok_if_already_exists) | |
3b7f6e60 | 2363 | Lisp_Object file, newname, ok_if_already_exists; |
570d7624 | 2364 | { |
32f4334d | 2365 | Lisp_Object handler; |
b1d1b865 RS |
2366 | Lisp_Object encoded_file, encoded_newname; |
2367 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; | |
570d7624 | 2368 | |
b1d1b865 RS |
2369 | GCPRO4 (file, newname, encoded_file, encoded_newname); |
2370 | encoded_file = encoded_newname = Qnil; | |
b7826503 PJ |
2371 | CHECK_STRING (file); |
2372 | CHECK_STRING (newname); | |
3b7f6e60 | 2373 | file = Fexpand_file_name (file, Qnil); |
1ffc5c90 RS |
2374 | |
2375 | if (!NILP (Ffile_directory_p (newname))) | |
2376 | newname = Fexpand_file_name (Ffile_name_nondirectory (file), newname); | |
2377 | else | |
2378 | newname = Fexpand_file_name (newname, Qnil); | |
32f4334d RS |
2379 | |
2380 | /* If the file name has special constructs in it, | |
2381 | call the corresponding file handler. */ | |
3b7f6e60 | 2382 | handler = Ffind_file_name_handler (file, Qadd_name_to_file); |
32f4334d | 2383 | if (!NILP (handler)) |
3b7f6e60 | 2384 | RETURN_UNGCPRO (call4 (handler, Qadd_name_to_file, file, |
36712b0a | 2385 | newname, ok_if_already_exists)); |
32f4334d | 2386 | |
adc6741c RS |
2387 | /* If the new name has special constructs in it, |
2388 | call the corresponding file handler. */ | |
2389 | handler = Ffind_file_name_handler (newname, Qadd_name_to_file); | |
2390 | if (!NILP (handler)) | |
3b7f6e60 | 2391 | RETURN_UNGCPRO (call4 (handler, Qadd_name_to_file, file, |
adc6741c RS |
2392 | newname, ok_if_already_exists)); |
2393 | ||
b1d1b865 RS |
2394 | encoded_file = ENCODE_FILE (file); |
2395 | encoded_newname = ENCODE_FILE (newname); | |
2396 | ||
265a9e55 | 2397 | if (NILP (ok_if_already_exists) |
93c30b5f | 2398 | || INTEGERP (ok_if_already_exists)) |
2f868094 | 2399 | barf_or_query_if_file_exists (newname, "make it a new name", |
b8b29dc9 | 2400 | INTEGERP (ok_if_already_exists), 0, 0); |
5e570b75 | 2401 | |
d5db4077 KR |
2402 | unlink (SDATA (newname)); |
2403 | if (0 > link (SDATA (encoded_file), SDATA (encoded_newname))) | |
a9f2aeae | 2404 | report_file_error ("Adding new name", list2 (file, newname)); |
570d7624 JB |
2405 | |
2406 | UNGCPRO; | |
2407 | return Qnil; | |
2408 | } | |
2409 | ||
570d7624 | 2410 | DEFUN ("make-symbolic-link", Fmake_symbolic_link, Smake_symbolic_link, 2, 3, |
7c0f6118 | 2411 | "FMake symbolic link to file: \nGMake symbolic link to file %s: \np", |
68780e2a RS |
2412 | doc: /* Make a symbolic link to FILENAME, named LINKNAME. |
2413 | Both args must be strings. | |
8c1a1077 PJ |
2414 | Signals a `file-already-exists' error if a file LINKNAME already exists |
2415 | unless optional third argument OK-IF-ALREADY-EXISTS is non-nil. | |
2416 | A number as third arg means request confirmation if LINKNAME already exists. | |
2417 | This happens for interactive use with M-x. */) | |
2418 | (filename, linkname, ok_if_already_exists) | |
e5d77022 | 2419 | Lisp_Object filename, linkname, ok_if_already_exists; |
570d7624 | 2420 | { |
32f4334d | 2421 | Lisp_Object handler; |
b1d1b865 RS |
2422 | Lisp_Object encoded_filename, encoded_linkname; |
2423 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; | |
570d7624 | 2424 | |
b1d1b865 RS |
2425 | GCPRO4 (filename, linkname, encoded_filename, encoded_linkname); |
2426 | encoded_filename = encoded_linkname = Qnil; | |
b7826503 PJ |
2427 | CHECK_STRING (filename); |
2428 | CHECK_STRING (linkname); | |
d9bc1c99 RS |
2429 | /* If the link target has a ~, we must expand it to get |
2430 | a truly valid file name. Otherwise, do not expand; | |
2431 | we want to permit links to relative file names. */ | |
d5db4077 | 2432 | if (SREF (filename, 0) == '~') |
d9bc1c99 | 2433 | filename = Fexpand_file_name (filename, Qnil); |
1ffc5c90 RS |
2434 | |
2435 | if (!NILP (Ffile_directory_p (linkname))) | |
dac24db4 | 2436 | linkname = Fexpand_file_name (Ffile_name_nondirectory (filename), linkname); |
1ffc5c90 RS |
2437 | else |
2438 | linkname = Fexpand_file_name (linkname, Qnil); | |
32f4334d RS |
2439 | |
2440 | /* If the file name has special constructs in it, | |
2441 | call the corresponding file handler. */ | |
49307295 | 2442 | handler = Ffind_file_name_handler (filename, Qmake_symbolic_link); |
32f4334d | 2443 | if (!NILP (handler)) |
36712b0a KH |
2444 | RETURN_UNGCPRO (call4 (handler, Qmake_symbolic_link, filename, |
2445 | linkname, ok_if_already_exists)); | |
32f4334d | 2446 | |
adc6741c RS |
2447 | /* If the new link name has special constructs in it, |
2448 | call the corresponding file handler. */ | |
2449 | handler = Ffind_file_name_handler (linkname, Qmake_symbolic_link); | |
2450 | if (!NILP (handler)) | |
2451 | RETURN_UNGCPRO (call4 (handler, Qmake_symbolic_link, filename, | |
2452 | linkname, ok_if_already_exists)); | |
2453 | ||
e89b536d | 2454 | #ifdef S_IFLNK |
b1d1b865 RS |
2455 | encoded_filename = ENCODE_FILE (filename); |
2456 | encoded_linkname = ENCODE_FILE (linkname); | |
2457 | ||
265a9e55 | 2458 | if (NILP (ok_if_already_exists) |
93c30b5f | 2459 | || INTEGERP (ok_if_already_exists)) |
2f868094 | 2460 | barf_or_query_if_file_exists (linkname, "make it a link", |
b8b29dc9 | 2461 | INTEGERP (ok_if_already_exists), 0, 0); |
d5db4077 KR |
2462 | if (0 > symlink (SDATA (encoded_filename), |
2463 | SDATA (encoded_linkname))) | |
570d7624 JB |
2464 | { |
2465 | /* If we didn't complain already, silently delete existing file. */ | |
2466 | if (errno == EEXIST) | |
2467 | { | |
d5db4077 KR |
2468 | unlink (SDATA (encoded_linkname)); |
2469 | if (0 <= symlink (SDATA (encoded_filename), | |
2470 | SDATA (encoded_linkname))) | |
1a04498e KH |
2471 | { |
2472 | UNGCPRO; | |
2473 | return Qnil; | |
2474 | } | |
570d7624 JB |
2475 | } |
2476 | ||
a9f2aeae | 2477 | report_file_error ("Making symbolic link", list2 (filename, linkname)); |
570d7624 JB |
2478 | } |
2479 | UNGCPRO; | |
2480 | return Qnil; | |
e89b536d MA |
2481 | |
2482 | #else | |
2483 | UNGCPRO; | |
2484 | xsignal1 (Qfile_error, build_string ("Symbolic links are not supported")); | |
2485 | ||
570d7624 | 2486 | #endif /* S_IFLNK */ |
e89b536d | 2487 | } |
570d7624 | 2488 | |
570d7624 JB |
2489 | \f |
2490 | DEFUN ("file-name-absolute-p", Ffile_name_absolute_p, Sfile_name_absolute_p, | |
2491 | 1, 1, 0, | |
8c1a1077 PJ |
2492 | doc: /* Return t if file FILENAME specifies an absolute file name. |
2493 | On Unix, this is a name starting with a `/' or a `~'. */) | |
570d7624 JB |
2494 | (filename) |
2495 | Lisp_Object filename; | |
2496 | { | |
b7826503 | 2497 | CHECK_STRING (filename); |
c70a4df6 | 2498 | return file_name_absolute_p (SDATA (filename)) ? Qt : Qnil; |
570d7624 | 2499 | } |
3beeedfe RS |
2500 | \f |
2501 | /* Return nonzero if file FILENAME exists and can be executed. */ | |
2502 | ||
2503 | static int | |
2504 | check_executable (filename) | |
2505 | char *filename; | |
2506 | { | |
3be3c08e RS |
2507 | #ifdef DOS_NT |
2508 | int len = strlen (filename); | |
2509 | char *suffix; | |
2510 | struct stat st; | |
2511 | if (stat (filename, &st) < 0) | |
2512 | return 0; | |
199607e4 | 2513 | return ((st.st_mode & S_IEXEC) != 0); |
3be3c08e | 2514 | #else /* not DOS_NT */ |
de0be7dd RS |
2515 | #ifdef HAVE_EUIDACCESS |
2516 | return (euidaccess (filename, 1) >= 0); | |
3beeedfe RS |
2517 | #else |
2518 | /* Access isn't quite right because it uses the real uid | |
2519 | and we really want to test with the effective uid. | |
2520 | But Unix doesn't give us a right way to do it. */ | |
2521 | return (access (filename, 1) >= 0); | |
2522 | #endif | |
3be3c08e | 2523 | #endif /* not DOS_NT */ |
3beeedfe RS |
2524 | } |
2525 | ||
2526 | /* Return nonzero if file FILENAME exists and can be written. */ | |
2527 | ||
2528 | static int | |
2529 | check_writable (filename) | |
2530 | char *filename; | |
2531 | { | |
3be3c08e RS |
2532 | #ifdef MSDOS |
2533 | struct stat st; | |
2534 | if (stat (filename, &st) < 0) | |
2535 | return 0; | |
2536 | return (st.st_mode & S_IWRITE || (st.st_mode & S_IFMT) == S_IFDIR); | |
2537 | #else /* not MSDOS */ | |
41f3fb38 KH |
2538 | #ifdef HAVE_EUIDACCESS |
2539 | return (euidaccess (filename, 2) >= 0); | |
3beeedfe RS |
2540 | #else |
2541 | /* Access isn't quite right because it uses the real uid | |
2542 | and we really want to test with the effective uid. | |
2543 | But Unix doesn't give us a right way to do it. | |
2544 | Opening with O_WRONLY could work for an ordinary file, | |
2545 | but would lose for directories. */ | |
2546 | return (access (filename, 2) >= 0); | |
2547 | #endif | |
3be3c08e | 2548 | #endif /* not MSDOS */ |
3beeedfe | 2549 | } |
570d7624 JB |
2550 | |
2551 | DEFUN ("file-exists-p", Ffile_exists_p, Sfile_exists_p, 1, 1, 0, | |
68780e2a RS |
2552 | doc: /* Return t if file FILENAME exists (whether or not you can read it.) |
2553 | See also `file-readable-p' and `file-attributes'. | |
2554 | This returns nil for a symlink to a nonexistent file. | |
2555 | Use `file-symlink-p' to test for such links. */) | |
8c1a1077 | 2556 | (filename) |
570d7624 JB |
2557 | Lisp_Object filename; |
2558 | { | |
199607e4 | 2559 | Lisp_Object absname; |
32f4334d | 2560 | Lisp_Object handler; |
4018b5ef | 2561 | struct stat statbuf; |
570d7624 | 2562 | |
b7826503 | 2563 | CHECK_STRING (filename); |
199607e4 | 2564 | absname = Fexpand_file_name (filename, Qnil); |
32f4334d RS |
2565 | |
2566 | /* If the file name has special constructs in it, | |
2567 | call the corresponding file handler. */ | |
199607e4 | 2568 | handler = Ffind_file_name_handler (absname, Qfile_exists_p); |
32f4334d | 2569 | if (!NILP (handler)) |
199607e4 | 2570 | return call2 (handler, Qfile_exists_p, absname); |
32f4334d | 2571 | |
b1d1b865 RS |
2572 | absname = ENCODE_FILE (absname); |
2573 | ||
d5db4077 | 2574 | return (stat (SDATA (absname), &statbuf) >= 0) ? Qt : Qnil; |
570d7624 JB |
2575 | } |
2576 | ||
2577 | DEFUN ("file-executable-p", Ffile_executable_p, Sfile_executable_p, 1, 1, 0, | |
8c1a1077 PJ |
2578 | doc: /* Return t if FILENAME can be executed by you. |
2579 | For a directory, this means you can access files in that directory. */) | |
2580 | (filename) | |
2581 | Lisp_Object filename; | |
570d7624 | 2582 | { |
199607e4 | 2583 | Lisp_Object absname; |
32f4334d | 2584 | Lisp_Object handler; |
570d7624 | 2585 | |
b7826503 | 2586 | CHECK_STRING (filename); |
199607e4 | 2587 | absname = Fexpand_file_name (filename, Qnil); |
32f4334d RS |
2588 | |
2589 | /* If the file name has special constructs in it, | |
2590 | call the corresponding file handler. */ | |
199607e4 | 2591 | handler = Ffind_file_name_handler (absname, Qfile_executable_p); |
32f4334d | 2592 | if (!NILP (handler)) |
199607e4 | 2593 | return call2 (handler, Qfile_executable_p, absname); |
32f4334d | 2594 | |
b1d1b865 RS |
2595 | absname = ENCODE_FILE (absname); |
2596 | ||
d5db4077 | 2597 | return (check_executable (SDATA (absname)) ? Qt : Qnil); |
570d7624 JB |
2598 | } |
2599 | ||
2600 | DEFUN ("file-readable-p", Ffile_readable_p, Sfile_readable_p, 1, 1, 0, | |
8c1a1077 PJ |
2601 | doc: /* Return t if file FILENAME exists and you can read it. |
2602 | See also `file-exists-p' and `file-attributes'. */) | |
2603 | (filename) | |
570d7624 JB |
2604 | Lisp_Object filename; |
2605 | { | |
199607e4 | 2606 | Lisp_Object absname; |
32f4334d | 2607 | Lisp_Object handler; |
4018b5ef | 2608 | int desc; |
bb369dc6 RS |
2609 | int flags; |
2610 | struct stat statbuf; | |
570d7624 | 2611 | |
b7826503 | 2612 | CHECK_STRING (filename); |
199607e4 | 2613 | absname = Fexpand_file_name (filename, Qnil); |
32f4334d 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_readable_p); |
32f4334d | 2618 | if (!NILP (handler)) |
199607e4 | 2619 | return call2 (handler, Qfile_readable_p, absname); |
32f4334d | 2620 | |
b1d1b865 RS |
2621 | absname = ENCODE_FILE (absname); |
2622 | ||
fb4c6c96 AC |
2623 | #if defined(DOS_NT) || defined(macintosh) |
2624 | /* Under MS-DOS, Windows, and Macintosh, open does not work for | |
2625 | directories. */ | |
d5db4077 | 2626 | if (access (SDATA (absname), 0) == 0) |
a8a7d065 RS |
2627 | return Qt; |
2628 | return Qnil; | |
fb4c6c96 | 2629 | #else /* not DOS_NT and not macintosh */ |
bb369dc6 RS |
2630 | flags = O_RDONLY; |
2631 | #if defined (S_ISFIFO) && defined (O_NONBLOCK) | |
2632 | /* Opening a fifo without O_NONBLOCK can wait. | |
2633 | We don't want to wait. But we don't want to mess wth O_NONBLOCK | |
2634 | except in the case of a fifo, on a system which handles it. */ | |
d5db4077 | 2635 | desc = stat (SDATA (absname), &statbuf); |
bb369dc6 RS |
2636 | if (desc < 0) |
2637 | return Qnil; | |
2638 | if (S_ISFIFO (statbuf.st_mode)) | |
2639 | flags |= O_NONBLOCK; | |
2640 | #endif | |
d5db4077 | 2641 | desc = emacs_open (SDATA (absname), flags, 0); |
4018b5ef RS |
2642 | if (desc < 0) |
2643 | return Qnil; | |
68c45bf0 | 2644 | emacs_close (desc); |
4018b5ef | 2645 | return Qt; |
fb4c6c96 | 2646 | #endif /* not DOS_NT and not macintosh */ |
570d7624 JB |
2647 | } |
2648 | ||
f793dc6c RS |
2649 | /* Having this before file-symlink-p mysteriously caused it to be forgotten |
2650 | on the RT/PC. */ | |
2651 | DEFUN ("file-writable-p", Ffile_writable_p, Sfile_writable_p, 1, 1, 0, | |
8c1a1077 PJ |
2652 | doc: /* Return t if file FILENAME can be written or created by you. */) |
2653 | (filename) | |
f793dc6c RS |
2654 | Lisp_Object filename; |
2655 | { | |
b1d1b865 | 2656 | Lisp_Object absname, dir, encoded; |
f793dc6c RS |
2657 | Lisp_Object handler; |
2658 | struct stat statbuf; | |
2659 | ||
b7826503 | 2660 | CHECK_STRING (filename); |
199607e4 | 2661 | absname = Fexpand_file_name (filename, Qnil); |
f793dc6c RS |
2662 | |
2663 | /* If the file name has special constructs in it, | |
2664 | call the corresponding file handler. */ | |
199607e4 | 2665 | handler = Ffind_file_name_handler (absname, Qfile_writable_p); |
f793dc6c | 2666 | if (!NILP (handler)) |
199607e4 | 2667 | return call2 (handler, Qfile_writable_p, absname); |
f793dc6c | 2668 | |
b1d1b865 | 2669 | encoded = ENCODE_FILE (absname); |
d5db4077 KR |
2670 | if (stat (SDATA (encoded), &statbuf) >= 0) |
2671 | return (check_writable (SDATA (encoded)) | |
f793dc6c | 2672 | ? Qt : Qnil); |
b1d1b865 | 2673 | |
199607e4 | 2674 | dir = Ffile_name_directory (absname); |
f793dc6c RS |
2675 | #ifdef MSDOS |
2676 | if (!NILP (dir)) | |
2677 | dir = Fdirectory_file_name (dir); | |
2678 | #endif /* MSDOS */ | |
b1d1b865 RS |
2679 | |
2680 | dir = ENCODE_FILE (dir); | |
e3e8a75a GM |
2681 | #ifdef WINDOWSNT |
2682 | /* The read-only attribute of the parent directory doesn't affect | |
2683 | whether a file or directory can be created within it. Some day we | |
2684 | should check ACLs though, which do affect this. */ | |
d5db4077 | 2685 | if (stat (SDATA (dir), &statbuf) < 0) |
e3e8a75a GM |
2686 | return Qnil; |
2687 | return (statbuf.st_mode & S_IFMT) == S_IFDIR ? Qt : Qnil; | |
2688 | #else | |
d5db4077 | 2689 | return (check_writable (!NILP (dir) ? (char *) SDATA (dir) : "") |
f793dc6c | 2690 | ? Qt : Qnil); |
e3e8a75a | 2691 | #endif |
f793dc6c RS |
2692 | } |
2693 | \f | |
1f8653eb | 2694 | DEFUN ("access-file", Faccess_file, Saccess_file, 2, 2, 0, |
8c1a1077 PJ |
2695 | doc: /* Access file FILENAME, and get an error if that does not work. |
2696 | The second argument STRING is used in the error message. | |
a4e03fe5 | 2697 | If there is no error, returns nil. */) |
8c1a1077 | 2698 | (filename, string) |
1f8653eb RS |
2699 | Lisp_Object filename, string; |
2700 | { | |
49475635 | 2701 | Lisp_Object handler, encoded_filename, absname; |
1f8653eb RS |
2702 | int fd; |
2703 | ||
b7826503 | 2704 | CHECK_STRING (filename); |
49475635 EZ |
2705 | absname = Fexpand_file_name (filename, Qnil); |
2706 | ||
b7826503 | 2707 | CHECK_STRING (string); |
1f8653eb RS |
2708 | |
2709 | /* If the file name has special constructs in it, | |
2710 | call the corresponding file handler. */ | |
49475635 | 2711 | handler = Ffind_file_name_handler (absname, Qaccess_file); |
1f8653eb | 2712 | if (!NILP (handler)) |
49475635 | 2713 | return call3 (handler, Qaccess_file, absname, string); |
1f8653eb | 2714 | |
49475635 | 2715 | encoded_filename = ENCODE_FILE (absname); |
b1d1b865 | 2716 | |
d5db4077 | 2717 | fd = emacs_open (SDATA (encoded_filename), O_RDONLY, 0); |
1f8653eb | 2718 | if (fd < 0) |
d5db4077 | 2719 | report_file_error (SDATA (string), Fcons (filename, Qnil)); |
68c45bf0 | 2720 | emacs_close (fd); |
1f8653eb RS |
2721 | |
2722 | return Qnil; | |
2723 | } | |
2724 | \f | |
570d7624 | 2725 | DEFUN ("file-symlink-p", Ffile_symlink_p, Sfile_symlink_p, 1, 1, 0, |
8c1a1077 | 2726 | doc: /* Return non-nil if file FILENAME is the name of a symbolic link. |
1c353c74 | 2727 | The value is the link target, as a string. |
68780e2a RS |
2728 | Otherwise it returns nil. |
2729 | ||
2730 | This function returns t when given the name of a symlink that | |
2731 | points to a nonexistent file. */) | |
8c1a1077 | 2732 | (filename) |
570d7624 JB |
2733 | Lisp_Object filename; |
2734 | { | |
32f4334d | 2735 | Lisp_Object handler; |
570d7624 | 2736 | |
b7826503 | 2737 | CHECK_STRING (filename); |
570d7624 JB |
2738 | filename = Fexpand_file_name (filename, Qnil); |
2739 | ||
32f4334d RS |
2740 | /* If the file name has special constructs in it, |
2741 | call the corresponding file handler. */ | |
49307295 | 2742 | handler = Ffind_file_name_handler (filename, Qfile_symlink_p); |
32f4334d RS |
2743 | if (!NILP (handler)) |
2744 | return call2 (handler, Qfile_symlink_p, filename); | |
2745 | ||
5adcec23 JR |
2746 | #ifdef S_IFLNK |
2747 | { | |
2748 | char *buf; | |
2749 | int bufsize; | |
2750 | int valsize; | |
2751 | Lisp_Object val; | |
2752 | ||
b1d1b865 RS |
2753 | filename = ENCODE_FILE (filename); |
2754 | ||
81c3310d GM |
2755 | bufsize = 50; |
2756 | buf = NULL; | |
2757 | do | |
570d7624 | 2758 | { |
81c3310d GM |
2759 | bufsize *= 2; |
2760 | buf = (char *) xrealloc (buf, bufsize); | |
570d7624 | 2761 | bzero (buf, bufsize); |
efdc16c9 | 2762 | |
81c3310d | 2763 | errno = 0; |
d5db4077 | 2764 | valsize = readlink (SDATA (filename), buf, bufsize); |
bcdd93b3 GM |
2765 | if (valsize == -1) |
2766 | { | |
81c3310d GM |
2767 | #ifdef ERANGE |
2768 | /* HP-UX reports ERANGE if buffer is too small. */ | |
bcdd93b3 GM |
2769 | if (errno == ERANGE) |
2770 | valsize = bufsize; | |
2771 | else | |
81c3310d | 2772 | #endif |
bcdd93b3 GM |
2773 | { |
2774 | xfree (buf); | |
2775 | return Qnil; | |
2776 | } | |
81c3310d | 2777 | } |
570d7624 | 2778 | } |
81c3310d | 2779 | while (valsize >= bufsize); |
efdc16c9 | 2780 | |
570d7624 | 2781 | val = make_string (buf, valsize); |
69ac1891 GM |
2782 | if (buf[0] == '/' && index (buf, ':')) |
2783 | val = concat2 (build_string ("/:"), val); | |
9ac0d9e0 | 2784 | xfree (buf); |
cd913586 KH |
2785 | val = DECODE_FILE (val); |
2786 | return val; | |
5adcec23 | 2787 | } |
570d7624 JB |
2788 | #else /* not S_IFLNK */ |
2789 | return Qnil; | |
2790 | #endif /* not S_IFLNK */ | |
2791 | } | |
2792 | ||
570d7624 | 2793 | DEFUN ("file-directory-p", Ffile_directory_p, Sfile_directory_p, 1, 1, 0, |
8c1a1077 PJ |
2794 | doc: /* Return t if FILENAME names an existing directory. |
2795 | Symbolic links to directories count as directories. | |
2796 | See `file-symlink-p' to distinguish symlinks. */) | |
2797 | (filename) | |
570d7624 JB |
2798 | Lisp_Object filename; |
2799 | { | |
199607e4 | 2800 | register Lisp_Object absname; |
570d7624 | 2801 | struct stat st; |
32f4334d | 2802 | Lisp_Object handler; |
570d7624 | 2803 | |
199607e4 | 2804 | absname = expand_and_dir_to_file (filename, current_buffer->directory); |
570d7624 | 2805 | |
32f4334d RS |
2806 | /* If the file name has special constructs in it, |
2807 | call the corresponding file handler. */ | |
199607e4 | 2808 | handler = Ffind_file_name_handler (absname, Qfile_directory_p); |
32f4334d | 2809 | if (!NILP (handler)) |
199607e4 | 2810 | return call2 (handler, Qfile_directory_p, absname); |
32f4334d | 2811 | |
b1d1b865 RS |
2812 | absname = ENCODE_FILE (absname); |
2813 | ||
d5db4077 | 2814 | if (stat (SDATA (absname), &st) < 0) |
570d7624 JB |
2815 | return Qnil; |
2816 | return (st.st_mode & S_IFMT) == S_IFDIR ? Qt : Qnil; | |
2817 | } | |
2818 | ||
b72dea2a | 2819 | DEFUN ("file-accessible-directory-p", Ffile_accessible_directory_p, Sfile_accessible_directory_p, 1, 1, 0, |
e385ec41 RS |
2820 | doc: /* Return t if file FILENAME names a directory you can open. |
2821 | For the value to be t, FILENAME must specify the name of a directory as a file, | |
2822 | and the directory must allow you to open files in it. In order to use a | |
8c1a1077 PJ |
2823 | directory as a buffer's current directory, this predicate must return true. |
2824 | A directory name spec may be given instead; then the value is t | |
2825 | if the directory so specified exists and really is a readable and | |
2826 | searchable directory. */) | |
2827 | (filename) | |
b72dea2a JB |
2828 | Lisp_Object filename; |
2829 | { | |
32f4334d | 2830 | Lisp_Object handler; |
1a04498e | 2831 | int tem; |
d26859eb | 2832 | struct gcpro gcpro1; |
32f4334d RS |
2833 | |
2834 | /* If the file name has special constructs in it, | |
2835 | call the corresponding file handler. */ | |
49307295 | 2836 | handler = Ffind_file_name_handler (filename, Qfile_accessible_directory_p); |
32f4334d RS |
2837 | if (!NILP (handler)) |
2838 | return call2 (handler, Qfile_accessible_directory_p, filename); | |
2839 | ||
d26859eb | 2840 | GCPRO1 (filename); |
1a04498e KH |
2841 | tem = (NILP (Ffile_directory_p (filename)) |
2842 | || NILP (Ffile_executable_p (filename))); | |
d26859eb | 2843 | UNGCPRO; |
1a04498e | 2844 | return tem ? Qnil : Qt; |
b72dea2a JB |
2845 | } |
2846 | ||
f793dc6c | 2847 | DEFUN ("file-regular-p", Ffile_regular_p, Sfile_regular_p, 1, 1, 0, |
19a9c3b7 LH |
2848 | doc: /* Return t if FILENAME names a regular file. |
2849 | This is the sort of file that holds an ordinary stream of data bytes. | |
2850 | Symbolic links to regular files count as regular files. | |
2851 | See `file-symlink-p' to distinguish symlinks. */) | |
8c1a1077 | 2852 | (filename) |
f793dc6c RS |
2853 | Lisp_Object filename; |
2854 | { | |
199607e4 | 2855 | register Lisp_Object absname; |
f793dc6c RS |
2856 | struct stat st; |
2857 | Lisp_Object handler; | |
2858 | ||
199607e4 | 2859 | absname = expand_and_dir_to_file (filename, current_buffer->directory); |
f793dc6c RS |
2860 | |
2861 | /* If the file name has special constructs in it, | |
2862 | call the corresponding file handler. */ | |
199607e4 | 2863 | handler = Ffind_file_name_handler (absname, Qfile_regular_p); |
f793dc6c | 2864 | if (!NILP (handler)) |
199607e4 | 2865 | return call2 (handler, Qfile_regular_p, absname); |
f793dc6c | 2866 | |
b1d1b865 RS |
2867 | absname = ENCODE_FILE (absname); |
2868 | ||
c1c4693e RS |
2869 | #ifdef WINDOWSNT |
2870 | { | |
2871 | int result; | |
2872 | Lisp_Object tem = Vw32_get_true_file_attributes; | |
2873 | ||
2874 | /* Tell stat to use expensive method to get accurate info. */ | |
2875 | Vw32_get_true_file_attributes = Qt; | |
d5db4077 | 2876 | result = stat (SDATA (absname), &st); |
c1c4693e RS |
2877 | Vw32_get_true_file_attributes = tem; |
2878 | ||
2879 | if (result < 0) | |
2880 | return Qnil; | |
2881 | return (st.st_mode & S_IFMT) == S_IFREG ? Qt : Qnil; | |
2882 | } | |
2883 | #else | |
d5db4077 | 2884 | if (stat (SDATA (absname), &st) < 0) |
f793dc6c RS |
2885 | return Qnil; |
2886 | return (st.st_mode & S_IFMT) == S_IFREG ? Qt : Qnil; | |
c1c4693e | 2887 | #endif |
f793dc6c RS |
2888 | } |
2889 | \f | |
574c05e2 KK |
2890 | DEFUN ("file-selinux-context", Ffile_selinux_context, |
2891 | Sfile_selinux_context, 1, 1, 0, | |
2892 | doc: /* Return SELinux context of file named FILENAME, | |
2893 | as a list ("user", "role", "type", "range"). Return (nil, nil, nil, nil) | |
2894 | if file does not exist, is not accessible, or SELinux is disabled */) | |
2895 | (filename) | |
2896 | Lisp_Object filename; | |
2897 | { | |
2898 | Lisp_Object absname; | |
2899 | Lisp_Object values[4]; | |
2900 | Lisp_Object handler; | |
2901 | #if HAVE_LIBSELINUX | |
2902 | security_context_t con; | |
2903 | int conlength; | |
2904 | context_t context; | |
2905 | #endif | |
2906 | ||
2907 | absname = expand_and_dir_to_file (filename, current_buffer->directory); | |
2908 | ||
2909 | /* If the file name has special constructs in it, | |
2910 | call the corresponding file handler. */ | |
2911 | handler = Ffind_file_name_handler (absname, Qfile_selinux_context); | |
2912 | if (!NILP (handler)) | |
2913 | return call2 (handler, Qfile_selinux_context, absname); | |
2914 | ||
2915 | absname = ENCODE_FILE (absname); | |
2916 | ||
2917 | values[0] = Qnil; | |
2918 | values[1] = Qnil; | |
2919 | values[2] = Qnil; | |
2920 | values[3] = Qnil; | |
2921 | #if HAVE_LIBSELINUX | |
2922 | if (is_selinux_enabled ()) | |
2923 | { | |
2924 | conlength = lgetfilecon (SDATA (absname), &con); | |
2925 | if (conlength > 0) | |
2926 | { | |
2927 | context = context_new (con); | |
45841e65 KK |
2928 | if (context_user_get (context)) |
2929 | values[0] = build_string (context_user_get (context)); | |
2930 | if (context_role_get (context)) | |
2931 | values[1] = build_string (context_role_get (context)); | |
2932 | if (context_type_get (context)) | |
2933 | values[2] = build_string (context_type_get (context)); | |
2934 | if (context_range_get (context)) | |
2935 | values[3] = build_string (context_range_get (context)); | |
574c05e2 KK |
2936 | context_free (context); |
2937 | } | |
2938 | if (con) | |
2939 | freecon (con); | |
2940 | } | |
2941 | #endif | |
2942 | ||
2943 | return Flist (sizeof(values) / sizeof(values[0]), values); | |
2944 | } | |
2945 | \f | |
2946 | DEFUN ("set-file-selinux-context", Fset_file_selinux_context, | |
2947 | Sset_file_selinux_context, 2, 2, 0, | |
2948 | doc: /* Set SELinux context of file named FILENAME to CONTEXT | |
2949 | as a list ("user", "role", "type", "range"). Has no effect if SELinux | |
2950 | is disabled. */) | |
2951 | (filename, context) | |
2952 | Lisp_Object filename, context; | |
2953 | { | |
2954 | Lisp_Object absname, encoded_absname; | |
2955 | Lisp_Object handler; | |
2956 | Lisp_Object user = CAR_SAFE (context); | |
2957 | Lisp_Object role = CAR_SAFE (CDR_SAFE (context)); | |
2958 | Lisp_Object type = CAR_SAFE (CDR_SAFE (CDR_SAFE (context))); | |
2959 | Lisp_Object range = CAR_SAFE (CDR_SAFE (CDR_SAFE (CDR_SAFE (context)))); | |
2960 | #if HAVE_LIBSELINUX | |
2961 | security_context_t con; | |
2962 | int fail, conlength; | |
2963 | context_t parsed_con; | |
2964 | #endif | |
2965 | ||
2966 | absname = Fexpand_file_name (filename, current_buffer->directory); | |
2967 | ||
2968 | /* If the file name has special constructs in it, | |
2969 | call the corresponding file handler. */ | |
2970 | handler = Ffind_file_name_handler (absname, Qset_file_selinux_context); | |
2971 | if (!NILP (handler)) | |
2972 | return call3 (handler, Qset_file_selinux_context, absname, context); | |
2973 | ||
2974 | encoded_absname = ENCODE_FILE (absname); | |
2975 | ||
2976 | #if HAVE_LIBSELINUX | |
2977 | if (is_selinux_enabled ()) | |
2978 | { | |
2979 | /* Get current file context. */ | |
2980 | conlength = lgetfilecon (SDATA (encoded_absname), &con); | |
2981 | if (conlength > 0) | |
2982 | { | |
2983 | parsed_con = context_new (con); | |
2984 | /* Change the parts defined in the parameter.*/ | |
2985 | if (STRINGP (user)) | |
2986 | { | |
2987 | if (context_user_set (parsed_con, SDATA (user))) | |
2988 | error ("Doing context_user_set"); | |
2989 | } | |
2990 | if (STRINGP (role)) | |
2991 | { | |
2992 | if (context_role_set (parsed_con, SDATA (role))) | |
2993 | error ("Doing context_role_set"); | |
2994 | } | |
2995 | if (STRINGP (type)) | |
2996 | { | |
2997 | if (context_type_set (parsed_con, SDATA (type))) | |
2998 | error ("Doing context_type_set"); | |
2999 | } | |
3000 | if (STRINGP (range)) | |
3001 | { | |
3002 | if (context_range_set (parsed_con, SDATA (range))) | |
3003 | error ("Doing context_range_set"); | |
3004 | } | |
3005 | ||
3006 | /* Set the modified context back to the file. */ | |
3007 | fail = lsetfilecon (SDATA (encoded_absname), context_str (parsed_con)); | |
3008 | if (fail) | |
3009 | report_file_error ("Doing lsetfilecon", Fcons (absname, Qnil)); | |
3010 | ||
3011 | context_free (parsed_con); | |
3012 | } | |
3013 | else | |
3014 | report_file_error("Doing lgetfilecon", Fcons (absname, Qnil)); | |
3015 | ||
3016 | if (con) | |
3017 | freecon (con); | |
3018 | } | |
3019 | #endif | |
3020 | ||
3021 | return Qnil; | |
3022 | } | |
3023 | \f | |
570d7624 | 3024 | DEFUN ("file-modes", Ffile_modes, Sfile_modes, 1, 1, 0, |
d4a42098 KS |
3025 | doc: /* Return mode bits of file named FILENAME, as an integer. |
3026 | Return nil, if file does not exist or is not accessible. */) | |
8c1a1077 | 3027 | (filename) |
570d7624 JB |
3028 | Lisp_Object filename; |
3029 | { | |
199607e4 | 3030 | Lisp_Object absname; |
570d7624 | 3031 | struct stat st; |
32f4334d | 3032 | Lisp_Object handler; |
570d7624 | 3033 | |
199607e4 | 3034 | absname = expand_and_dir_to_file (filename, current_buffer->directory); |
570d7624 | 3035 | |
32f4334d RS |
3036 | /* If the file name has special constructs in it, |
3037 | call the corresponding file handler. */ | |
199607e4 | 3038 | handler = Ffind_file_name_handler (absname, Qfile_modes); |
32f4334d | 3039 | if (!NILP (handler)) |
199607e4 | 3040 | return call2 (handler, Qfile_modes, absname); |
32f4334d | 3041 | |
b1d1b865 RS |
3042 | absname = ENCODE_FILE (absname); |
3043 | ||
d5db4077 | 3044 | if (stat (SDATA (absname), &st) < 0) |
570d7624 | 3045 | return Qnil; |
3ace87e3 | 3046 | |
570d7624 JB |
3047 | return make_number (st.st_mode & 07777); |
3048 | } | |
3049 | ||
09fbdf6c MC |
3050 | DEFUN ("set-file-modes", Fset_file_modes, Sset_file_modes, 2, 2, |
3051 | "(let ((file (read-file-name \"File: \"))) \ | |
3052 | (list file (read-file-modes nil file)))", | |
8c1a1077 | 3053 | doc: /* Set mode bits of file named FILENAME to MODE (an integer). |
ea429250 EZ |
3054 | Only the 12 low bits of MODE are used. |
3055 | ||
3056 | Interactively, mode bits are read by `read-file-modes', which accepts | |
712adc82 | 3057 | symbolic notation, like the `chmod' command from GNU Coreutils. */) |
570d7624 JB |
3058 | (filename, mode) |
3059 | Lisp_Object filename, mode; | |
3060 | { | |
b1d1b865 | 3061 | Lisp_Object absname, encoded_absname; |
32f4334d | 3062 | Lisp_Object handler; |
570d7624 | 3063 | |
199607e4 | 3064 | absname = Fexpand_file_name (filename, current_buffer->directory); |
b7826503 | 3065 | CHECK_NUMBER (mode); |
570d7624 | 3066 | |
32f4334d RS |
3067 | /* If the file name has special constructs in it, |
3068 | call the corresponding file handler. */ | |
199607e4 | 3069 | handler = Ffind_file_name_handler (absname, Qset_file_modes); |
32f4334d | 3070 | if (!NILP (handler)) |
199607e4 | 3071 | return call3 (handler, Qset_file_modes, absname, mode); |
32f4334d | 3072 | |
b1d1b865 RS |
3073 | encoded_absname = ENCODE_FILE (absname); |
3074 | ||
d5db4077 | 3075 | if (chmod (SDATA (encoded_absname), XINT (mode)) < 0) |
199607e4 | 3076 | report_file_error ("Doing chmod", Fcons (absname, Qnil)); |
570d7624 JB |
3077 | |
3078 | return Qnil; | |
3079 | } | |
3080 | ||
c24e9a53 | 3081 | DEFUN ("set-default-file-modes", Fset_default_file_modes, Sset_default_file_modes, 1, 1, 0, |
8c1a1077 PJ |
3082 | doc: /* Set the file permission bits for newly created files. |
3083 | The argument MODE should be an integer; only the low 9 bits are used. | |
3084 | This setting is inherited by subprocesses. */) | |
3085 | (mode) | |
5f85ea58 | 3086 | Lisp_Object mode; |
36a8c287 | 3087 | { |
b7826503 | 3088 | CHECK_NUMBER (mode); |
199607e4 | 3089 | |
5f85ea58 | 3090 | umask ((~ XINT (mode)) & 0777); |
36a8c287 JB |
3091 | |
3092 | return Qnil; | |
3093 | } | |
3094 | ||
c24e9a53 | 3095 | DEFUN ("default-file-modes", Fdefault_file_modes, Sdefault_file_modes, 0, 0, 0, |
8c1a1077 PJ |
3096 | doc: /* Return the default file protection for created files. |
3097 | The value is an integer. */) | |
3098 | () | |
36a8c287 | 3099 | { |
5f85ea58 RS |
3100 | int realmask; |
3101 | Lisp_Object value; | |
36a8c287 | 3102 | |
5f85ea58 RS |
3103 | realmask = umask (0); |
3104 | umask (realmask); | |
36a8c287 | 3105 | |
46283abe | 3106 | XSETINT (value, (~ realmask) & 0777); |
5f85ea58 | 3107 | return value; |
36a8c287 | 3108 | } |
819da85b EZ |
3109 | \f |
3110 | extern int lisp_time_argument P_ ((Lisp_Object, time_t *, int *)); | |
3111 | ||
3112 | DEFUN ("set-file-times", Fset_file_times, Sset_file_times, 1, 2, 0, | |
3113 | doc: /* Set times of file FILENAME to TIME. | |
3114 | Set both access and modification times. | |
3115 | Return t on success, else nil. | |
3116 | Use the current time if TIME is nil. TIME is in the format of | |
3117 | `current-time'. */) | |
3118 | (filename, time) | |
3119 | Lisp_Object filename, time; | |
3120 | { | |
3121 | Lisp_Object absname, encoded_absname; | |
3122 | Lisp_Object handler; | |
3123 | time_t sec; | |
3124 | int usec; | |
3125 | ||
3126 | if (! lisp_time_argument (time, &sec, &usec)) | |
3127 | error ("Invalid time specification"); | |
3128 | ||
3129 | absname = Fexpand_file_name (filename, current_buffer->directory); | |
3130 | ||
3131 | /* If the file name has special constructs in it, | |
3132 | call the corresponding file handler. */ | |
3133 | handler = Ffind_file_name_handler (absname, Qset_file_times); | |
3134 | if (!NILP (handler)) | |
3135 | return call3 (handler, Qset_file_times, absname, time); | |
3136 | ||
3137 | encoded_absname = ENCODE_FILE (absname); | |
5df5e07c | 3138 | |
819da85b EZ |
3139 | { |
3140 | EMACS_TIME t; | |
3141 | ||
3142 | EMACS_SET_SECS (t, sec); | |
3143 | EMACS_SET_USECS (t, usec); | |
3144 | ||
3145 | if (set_file_times (SDATA (encoded_absname), t, t)) | |
3146 | { | |
3147 | #ifdef DOS_NT | |
3148 | struct stat st; | |
3149 | ||
3150 | /* Setting times on a directory always fails. */ | |
3151 | if (stat (SDATA (encoded_absname), &st) == 0 | |
3152 | && (st.st_mode & S_IFMT) == S_IFDIR) | |
3153 | return Qnil; | |
3154 | #endif | |
3155 | report_file_error ("Setting file times", Fcons (absname, Qnil)); | |
3156 | return Qnil; | |
3157 | } | |
3158 | } | |
5df5e07c | 3159 | |
819da85b EZ |
3160 | return Qt; |
3161 | } | |
f793dc6c | 3162 | \f |
697c17a2 | 3163 | #ifdef HAVE_SYNC |
85ffea93 | 3164 | DEFUN ("unix-sync", Funix_sync, Sunix_sync, 0, 0, "", |
8c1a1077 PJ |
3165 | doc: /* Tell Unix to finish all pending disk updates. */) |
3166 | () | |
85ffea93 RS |
3167 | { |
3168 | sync (); | |
3169 | return Qnil; | |
3170 | } | |
3171 | ||
697c17a2 | 3172 | #endif /* HAVE_SYNC */ |
85ffea93 | 3173 | |
570d7624 | 3174 | DEFUN ("file-newer-than-file-p", Ffile_newer_than_file_p, Sfile_newer_than_file_p, 2, 2, 0, |
8c1a1077 PJ |
3175 | doc: /* Return t if file FILE1 is newer than file FILE2. |
3176 | If FILE1 does not exist, the answer is nil; | |
3177 | otherwise, if FILE2 does not exist, the answer is t. */) | |
3178 | (file1, file2) | |
570d7624 JB |
3179 | Lisp_Object file1, file2; |
3180 | { | |
199607e4 | 3181 | Lisp_Object absname1, absname2; |
570d7624 JB |
3182 | struct stat st; |
3183 | int mtime1; | |
32f4334d | 3184 | Lisp_Object handler; |
09121adc | 3185 | struct gcpro gcpro1, gcpro2; |
570d7624 | 3186 | |
b7826503 PJ |
3187 | CHECK_STRING (file1); |
3188 | CHECK_STRING (file2); | |
570d7624 | 3189 | |
199607e4 RS |
3190 | absname1 = Qnil; |
3191 | GCPRO2 (absname1, file2); | |
3192 | absname1 = expand_and_dir_to_file (file1, current_buffer->directory); | |
3193 | absname2 = expand_and_dir_to_file (file2, current_buffer->directory); | |
09121adc | 3194 | UNGCPRO; |
570d7624 | 3195 | |
32f4334d RS |
3196 | /* If the file name has special constructs in it, |
3197 | call the corresponding file handler. */ | |
199607e4 | 3198 | handler = Ffind_file_name_handler (absname1, Qfile_newer_than_file_p); |
51cf6d37 | 3199 | if (NILP (handler)) |
199607e4 | 3200 | handler = Ffind_file_name_handler (absname2, Qfile_newer_than_file_p); |
32f4334d | 3201 | if (!NILP (handler)) |
199607e4 | 3202 | return call3 (handler, Qfile_newer_than_file_p, absname1, absname2); |
32f4334d | 3203 | |
b1d1b865 RS |
3204 | GCPRO2 (absname1, absname2); |
3205 | absname1 = ENCODE_FILE (absname1); | |
3206 | absname2 = ENCODE_FILE (absname2); | |
3207 | UNGCPRO; | |
3208 | ||
d5db4077 | 3209 | if (stat (SDATA (absname1), &st) < 0) |
570d7624 JB |
3210 | return Qnil; |
3211 | ||
3212 | mtime1 = st.st_mtime; | |
3213 | ||
d5db4077 | 3214 | if (stat (SDATA (absname2), &st) < 0) |
570d7624 JB |
3215 | return Qt; |
3216 | ||
3217 | return (mtime1 > st.st_mtime) ? Qt : Qnil; | |
3218 | } | |
3219 | \f | |
5e570b75 | 3220 | #ifdef DOS_NT |
4c3c22f3 | 3221 | Lisp_Object Qfind_buffer_file_type; |
5e570b75 | 3222 | #endif /* DOS_NT */ |
4c3c22f3 | 3223 | |
6fdaa9a0 KH |
3224 | #ifndef READ_BUF_SIZE |
3225 | #define READ_BUF_SIZE (64 << 10) | |
3226 | #endif | |
3227 | ||
98a7d268 KH |
3228 | /* This function is called after Lisp functions to decide a coding |
3229 | system are called, or when they cause an error. Before they are | |
3230 | called, the current buffer is set unibyte and it contains only a | |
3231 | newly inserted text (thus the buffer was empty before the | |
3232 | insertion). | |
3233 | ||
3234 | The functions may set markers, overlays, text properties, or even | |
3235 | alter the buffer contents, change the current buffer. | |
3236 | ||
3237 | Here, we reset all those changes by: | |
3238 | o set back the current buffer. | |
3239 | o move all markers and overlays to BEG. | |
3240 | o remove all text properties. | |
3241 | o set back the buffer multibyteness. */ | |
f736ffbf KH |
3242 | |
3243 | static Lisp_Object | |
98a7d268 KH |
3244 | decide_coding_unwind (unwind_data) |
3245 | Lisp_Object unwind_data; | |
f736ffbf | 3246 | { |
98a7d268 | 3247 | Lisp_Object multibyte, undo_list, buffer; |
f736ffbf | 3248 | |
98a7d268 KH |
3249 | multibyte = XCAR (unwind_data); |
3250 | unwind_data = XCDR (unwind_data); | |
3251 | undo_list = XCAR (unwind_data); | |
3252 | buffer = XCDR (unwind_data); | |
3253 | ||
3254 | if (current_buffer != XBUFFER (buffer)) | |
3255 | set_buffer_internal (XBUFFER (buffer)); | |
3256 | adjust_markers_for_delete (BEG, BEG_BYTE, Z, Z_BYTE); | |
3257 | adjust_overlays_for_delete (BEG, Z - BEG); | |
3258 | BUF_INTERVALS (current_buffer) = 0; | |
3259 | TEMP_SET_PT_BOTH (BEG, BEG_BYTE); | |
3260 | ||
3261 | /* Now we are safe to change the buffer's multibyteness directly. */ | |
3262 | current_buffer->enable_multibyte_characters = multibyte; | |
3263 | current_buffer->undo_list = undo_list; | |
f736ffbf KH |
3264 | |
3265 | return Qnil; | |
3266 | } | |
3267 | ||
55587f8a | 3268 | |
1b978129 | 3269 | /* Used to pass values from insert-file-contents to read_non_regular. */ |
55587f8a | 3270 | |
1b978129 | 3271 | static int non_regular_fd; |
ae19ba7c SM |
3272 | static EMACS_INT non_regular_inserted; |
3273 | static EMACS_INT non_regular_nbytes; | |
55587f8a | 3274 | |
55587f8a | 3275 | |
1b978129 GM |
3276 | /* Read from a non-regular file. |
3277 | Read non_regular_trytry bytes max from non_regular_fd. | |
3278 | Non_regular_inserted specifies where to put the read bytes. | |
3279 | Value is the number of bytes read. */ | |
55587f8a GM |
3280 | |
3281 | static Lisp_Object | |
1b978129 | 3282 | read_non_regular () |
55587f8a | 3283 | { |
ae19ba7c | 3284 | EMACS_INT nbytes; |
efdc16c9 | 3285 | |
1b978129 GM |
3286 | immediate_quit = 1; |
3287 | QUIT; | |
3288 | nbytes = emacs_read (non_regular_fd, | |
28c3eb5a | 3289 | BEG_ADDR + PT_BYTE - BEG_BYTE + non_regular_inserted, |
1b978129 | 3290 | non_regular_nbytes); |
1b978129 GM |
3291 | immediate_quit = 0; |
3292 | return make_number (nbytes); | |
3293 | } | |
55587f8a | 3294 | |
d0e2444e | 3295 | |
1b978129 GM |
3296 | /* Condition-case handler used when reading from non-regular files |
3297 | in insert-file-contents. */ | |
3298 | ||
3299 | static Lisp_Object | |
3300 | read_non_regular_quit () | |
3301 | { | |
55587f8a GM |
3302 | return Qnil; |
3303 | } | |
3304 | ||
3305 | ||
570d7624 | 3306 | DEFUN ("insert-file-contents", Finsert_file_contents, Sinsert_file_contents, |
8c1a1077 PJ |
3307 | 1, 5, 0, |
3308 | doc: /* Insert contents of file FILENAME after point. | |
cf6d2357 | 3309 | Returns list of absolute file name and number of characters inserted. |
6f2528d8 MR |
3310 | If second argument VISIT is non-nil, the buffer's visited filename and |
3311 | last save file modtime are set, and it is marked unmodified. If | |
3312 | visiting and the file does not exist, visiting is completed before the | |
3313 | error is signaled. | |
3314 | ||
3315 | The optional third and fourth arguments BEG and END specify what portion | |
3316 | of the file to insert. These arguments count bytes in the file, not | |
3317 | characters in the buffer. If VISIT is non-nil, BEG and END must be nil. | |
3318 | ||
3319 | If optional fifth argument REPLACE is non-nil, replace the current | |
3320 | buffer contents (in the accessible portion) with the file contents. | |
3321 | This is better than simply deleting and inserting the whole thing | |
3322 | because (1) it preserves some marker positions and (2) it puts less data | |
3323 | in the undo list. When REPLACE is non-nil, the second return value is | |
3324 | the number of characters that replace previous buffer contents. | |
3325 | ||
3326 | This function does code conversion according to the value of | |
3327 | `coding-system-for-read' or `file-coding-system-alist', and sets the | |
3328 | variable `last-coding-system-used' to the coding system actually used. */) | |
8c1a1077 | 3329 | (filename, visit, beg, end, replace) |
3d0387c0 | 3330 | Lisp_Object filename, visit, beg, end, replace; |
570d7624 JB |
3331 | { |
3332 | struct stat st; | |
3333 | register int fd; | |
ae19ba7c | 3334 | EMACS_INT inserted = 0; |
18a9f8d9 | 3335 | int nochange = 0; |
ae19ba7c SM |
3336 | register EMACS_INT how_much; |
3337 | register EMACS_INT unprocessed; | |
331379bf | 3338 | int count = SPECPDL_INDEX (); |
6f2528d8 MR |
3339 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5; |
3340 | Lisp_Object handler, val, insval, orig_filename, old_undo; | |
d6a3cc15 | 3341 | Lisp_Object p; |
ae19ba7c | 3342 | EMACS_INT total = 0; |
53c34c46 | 3343 | int not_regular = 0; |
feb9dc27 | 3344 | unsigned char read_buf[READ_BUF_SIZE]; |
6fdaa9a0 | 3345 | struct coding_system coding; |
3dbcf3f6 | 3346 | unsigned char buffer[1 << 14]; |
727a0b4a | 3347 | int replace_handled = 0; |
ec7adf26 | 3348 | int set_coding_system = 0; |
db327c7e | 3349 | Lisp_Object coding_system; |
1b978129 | 3350 | int read_quit = 0; |
490ee853 | 3351 | Lisp_Object old_Vdeactivate_mark = Vdeactivate_mark; |
68780e2a | 3352 | int we_locked_file = 0; |
db65a627 | 3353 | int deferred_remove_unwind_protect = 0; |
32f4334d | 3354 | |
95385625 RS |
3355 | if (current_buffer->base_buffer && ! NILP (visit)) |
3356 | error ("Cannot do file visiting in an indirect buffer"); | |
3357 | ||
3358 | if (!NILP (current_buffer->read_only)) | |
3359 | Fbarf_if_buffer_read_only (); | |
3360 | ||
32f4334d | 3361 | val = Qnil; |
d6a3cc15 | 3362 | p = Qnil; |
b1d1b865 | 3363 | orig_filename = Qnil; |
6f2528d8 | 3364 | old_undo = Qnil; |
32f4334d | 3365 | |
6f2528d8 | 3366 | GCPRO5 (filename, val, p, orig_filename, old_undo); |
570d7624 | 3367 | |
b7826503 | 3368 | CHECK_STRING (filename); |
570d7624 JB |
3369 | filename = Fexpand_file_name (filename, Qnil); |
3370 | ||
1c157f8d KH |
3371 | /* The value Qnil means that the coding system is not yet |
3372 | decided. */ | |
3373 | coding_system = Qnil; | |
3374 | ||
32f4334d RS |
3375 | /* If the file name has special constructs in it, |
3376 | call the corresponding file handler. */ | |
49307295 | 3377 | handler = Ffind_file_name_handler (filename, Qinsert_file_contents); |
32f4334d RS |
3378 | if (!NILP (handler)) |
3379 | { | |
3d0387c0 RS |
3380 | val = call6 (handler, Qinsert_file_contents, filename, |
3381 | visit, beg, end, replace); | |
03699b14 KR |
3382 | if (CONSP (val) && CONSP (XCDR (val))) |
3383 | inserted = XINT (XCAR (XCDR (val))); | |
32f4334d RS |
3384 | goto handled; |
3385 | } | |
3386 | ||
b1d1b865 RS |
3387 | orig_filename = filename; |
3388 | filename = ENCODE_FILE (filename); | |
3389 | ||
570d7624 JB |
3390 | fd = -1; |
3391 | ||
c1c4693e RS |
3392 | #ifdef WINDOWSNT |
3393 | { | |
3394 | Lisp_Object tem = Vw32_get_true_file_attributes; | |
3395 | ||
3396 | /* Tell stat to use expensive method to get accurate info. */ | |
3397 | Vw32_get_true_file_attributes = Qt; | |
d5db4077 | 3398 | total = stat (SDATA (filename), &st); |
c1c4693e RS |
3399 | Vw32_get_true_file_attributes = tem; |
3400 | } | |
3401 | if (total < 0) | |
3402 | #else | |
d5db4077 | 3403 | if (stat (SDATA (filename), &st) < 0) |
c1c4693e | 3404 | #endif /* WINDOWSNT */ |
570d7624 | 3405 | { |
68c45bf0 | 3406 | if (fd >= 0) emacs_close (fd); |
99bc28f4 | 3407 | badopen: |
265a9e55 | 3408 | if (NILP (visit)) |
b1d1b865 | 3409 | report_file_error ("Opening input file", Fcons (orig_filename, Qnil)); |
570d7624 JB |
3410 | st.st_mtime = -1; |
3411 | how_much = 0; | |
0de6b8f4 | 3412 | if (!NILP (Vcoding_system_for_read)) |
22d92d6b | 3413 | Fset (Qbuffer_file_coding_system, Vcoding_system_for_read); |
570d7624 JB |
3414 | goto notfound; |
3415 | } | |
3416 | ||
99bc28f4 | 3417 | #ifdef S_IFREG |
be53b411 JB |
3418 | /* This code will need to be changed in order to work on named |
3419 | pipes, and it's probably just not worth it. So we should at | |
3420 | least signal an error. */ | |
99bc28f4 | 3421 | if (!S_ISREG (st.st_mode)) |
330bfe57 | 3422 | { |
d4b8687b RS |
3423 | not_regular = 1; |
3424 | ||
3425 | if (! NILP (visit)) | |
3426 | goto notfound; | |
3427 | ||
3428 | if (! NILP (replace) || ! NILP (beg) || ! NILP (end)) | |
24b1ddad KS |
3429 | xsignal2 (Qfile_error, |
3430 | build_string ("not a regular file"), orig_filename); | |
330bfe57 | 3431 | } |
be53b411 JB |
3432 | #endif |
3433 | ||
99bc28f4 | 3434 | if (fd < 0) |
d5db4077 | 3435 | if ((fd = emacs_open (SDATA (filename), O_RDONLY, 0)) < 0) |
99bc28f4 KH |
3436 | goto badopen; |
3437 | ||
3438 | /* Replacement should preserve point as it preserves markers. */ | |
3439 | if (!NILP (replace)) | |
3440 | record_unwind_protect (restore_point_unwind, Fpoint_marker ()); | |
3441 | ||
3442 | record_unwind_protect (close_file_unwind, make_number (fd)); | |
3443 | ||
11d300db | 3444 | /* Can happen on any platform that uses long as type of off_t, but allows |
7c2fb837 | 3445 | file sizes to exceed 2Gb, so give a suitable message. */ |
d4b8687b | 3446 | if (! not_regular && st.st_size < 0) |
11d300db | 3447 | error ("Maximum buffer size exceeded"); |
be53b411 | 3448 | |
9c856db9 GM |
3449 | /* Prevent redisplay optimizations. */ |
3450 | current_buffer->clip_changed = 1; | |
3451 | ||
9f57b6b4 KH |
3452 | if (!NILP (visit)) |
3453 | { | |
3454 | if (!NILP (beg) || !NILP (end)) | |
3455 | error ("Attempt to visit less than an entire file"); | |
3456 | if (BEG < Z && NILP (replace)) | |
3457 | error ("Cannot do file visiting in a non-empty buffer"); | |
3458 | } | |
7fded690 JB |
3459 | |
3460 | if (!NILP (beg)) | |
b7826503 | 3461 | CHECK_NUMBER (beg); |
7fded690 | 3462 | else |
2acfd7ae | 3463 | XSETFASTINT (beg, 0); |
7fded690 JB |
3464 | |
3465 | if (!NILP (end)) | |
b7826503 | 3466 | CHECK_NUMBER (end); |
7fded690 JB |
3467 | else |
3468 | { | |
d4b8687b RS |
3469 | if (! not_regular) |
3470 | { | |
3471 | XSETINT (end, st.st_size); | |
68c45bf0 PE |
3472 | |
3473 | /* Arithmetic overflow can occur if an Emacs integer cannot | |
3474 | represent the file size, or if the calculations below | |
3475 | overflow. The calculations below double the file size | |
3476 | twice, so check that it can be multiplied by 4 safely. */ | |
3477 | if (XINT (end) != st.st_size | |
ab226c50 SM |
3478 | /* Actually, it should test either INT_MAX or LONG_MAX |
3479 | depending on which one is used for EMACS_INT. But in | |
3480 | any case, in practice, this test is redundant with the | |
3481 | one above. | |
3482 | || st.st_size > INT_MAX / 4 */) | |
d4b8687b | 3483 | error ("Maximum buffer size exceeded"); |
d21dd12d GM |
3484 | |
3485 | /* The file size returned from stat may be zero, but data | |
3486 | may be readable nonetheless, for example when this is a | |
3487 | file in the /proc filesystem. */ | |
3488 | if (st.st_size == 0) | |
3489 | XSETINT (end, READ_BUF_SIZE); | |
d4b8687b | 3490 | } |
7fded690 JB |
3491 | } |
3492 | ||
356a6224 | 3493 | if (EQ (Vcoding_system_for_read, Qauto_save_coding)) |
5560aecd | 3494 | { |
75421805 | 3495 | coding_system = coding_inherit_eol_type (Qutf_8_emacs, Qunix); |
5560aecd KH |
3496 | setup_coding_system (coding_system, &coding); |
3497 | /* Ensure we set Vlast_coding_system_used. */ | |
3498 | set_coding_system = 1; | |
3499 | } | |
356a6224 | 3500 | else if (BEG < Z) |
f736ffbf KH |
3501 | { |
3502 | /* Decide the coding system to use for reading the file now | |
3503 | because we can't use an optimized method for handling | |
3504 | `coding:' tag if the current buffer is not empty. */ | |
f736ffbf | 3505 | if (!NILP (Vcoding_system_for_read)) |
db327c7e | 3506 | coding_system = Vcoding_system_for_read; |
f736ffbf KH |
3507 | else |
3508 | { | |
3509 | /* Don't try looking inside a file for a coding system | |
3510 | specification if it is not seekable. */ | |
3511 | if (! not_regular && ! NILP (Vset_auto_coding_function)) | |
3512 | { | |
3513 | /* Find a coding system specified in the heading two | |
3514 | lines or in the tailing several lines of the file. | |
3515 | We assume that the 1K-byte and 3K-byte for heading | |
003a7eaa | 3516 | and tailing respectively are sufficient for this |
f736ffbf | 3517 | purpose. */ |
ae19ba7c | 3518 | EMACS_INT nread; |
f736ffbf KH |
3519 | |
3520 | if (st.st_size <= (1024 * 4)) | |
68c45bf0 | 3521 | nread = emacs_read (fd, read_buf, 1024 * 4); |
f736ffbf KH |
3522 | else |
3523 | { | |
68c45bf0 | 3524 | nread = emacs_read (fd, read_buf, 1024); |
f736ffbf KH |
3525 | if (nread >= 0) |
3526 | { | |
3527 | if (lseek (fd, st.st_size - (1024 * 3), 0) < 0) | |
3528 | report_file_error ("Setting file position", | |
3529 | Fcons (orig_filename, Qnil)); | |
68c45bf0 | 3530 | nread += emacs_read (fd, read_buf + nread, 1024 * 3); |
f736ffbf KH |
3531 | } |
3532 | } | |
feb9dc27 | 3533 | |
f736ffbf KH |
3534 | if (nread < 0) |
3535 | error ("IO error reading %s: %s", | |
d5db4077 | 3536 | SDATA (orig_filename), emacs_strerror (errno)); |
f736ffbf KH |
3537 | else if (nread > 0) |
3538 | { | |
f736ffbf | 3539 | struct buffer *prev = current_buffer; |
685fc579 RS |
3540 | Lisp_Object buffer; |
3541 | struct buffer *buf; | |
f736ffbf KH |
3542 | |
3543 | record_unwind_protect (Fset_buffer, Fcurrent_buffer ()); | |
1d92afcd | 3544 | |
685fc579 RS |
3545 | buffer = Fget_buffer_create (build_string (" *code-converting-work*")); |
3546 | buf = XBUFFER (buffer); | |
3547 | ||
29ea8ae9 | 3548 | delete_all_overlays (buf); |
685fc579 RS |
3549 | buf->directory = current_buffer->directory; |
3550 | buf->read_only = Qnil; | |
3551 | buf->filename = Qnil; | |
3552 | buf->undo_list = Qt; | |
29ea8ae9 SM |
3553 | eassert (buf->overlays_before == NULL); |
3554 | eassert (buf->overlays_after == NULL); | |
efdc16c9 | 3555 | |
685fc579 RS |
3556 | set_buffer_internal (buf); |
3557 | Ferase_buffer (); | |
3558 | buf->enable_multibyte_characters = Qnil; | |
3559 | ||
f736ffbf KH |
3560 | insert_1_both (read_buf, nread, nread, 0, 0, 0); |
3561 | TEMP_SET_PT_BOTH (BEG, BEG_BYTE); | |
db327c7e | 3562 | coding_system = call2 (Vset_auto_coding_function, |
8f924df7 | 3563 | filename, make_number (nread)); |
f736ffbf | 3564 | set_buffer_internal (prev); |
efdc16c9 | 3565 | |
f736ffbf KH |
3566 | /* Discard the unwind protect for recovering the |
3567 | current buffer. */ | |
3568 | specpdl_ptr--; | |
3569 | ||
3570 | /* Rewind the file for the actual read done later. */ | |
3571 | if (lseek (fd, 0, 0) < 0) | |
3572 | report_file_error ("Setting file position", | |
3573 | Fcons (orig_filename, Qnil)); | |
3574 | } | |
3575 | } | |
feb9dc27 | 3576 | |
db327c7e | 3577 | if (NILP (coding_system)) |
f736ffbf KH |
3578 | { |
3579 | /* If we have not yet decided a coding system, check | |
3580 | file-coding-system-alist. */ | |
8f924df7 | 3581 | Lisp_Object args[6]; |
f736ffbf KH |
3582 | |
3583 | args[0] = Qinsert_file_contents, args[1] = orig_filename; | |
3584 | args[2] = visit, args[3] = beg, args[4] = end, args[5] = replace; | |
8f924df7 KH |
3585 | coding_system = Ffind_operation_coding_system (6, args); |
3586 | if (CONSP (coding_system)) | |
3587 | coding_system = XCAR (coding_system); | |
f736ffbf KH |
3588 | } |
3589 | } | |
c9e82392 | 3590 | |
db327c7e KH |
3591 | if (NILP (coding_system)) |
3592 | coding_system = Qundecided; | |
3593 | else | |
3594 | CHECK_CODING_SYSTEM (coding_system); | |
c8a6d68a | 3595 | |
db327c7e | 3596 | if (NILP (current_buffer->enable_multibyte_characters)) |
237a6fd2 RS |
3597 | /* We must suppress all character code conversion except for |
3598 | end-of-line conversion. */ | |
db327c7e | 3599 | coding_system = raw_text_coding_system (coding_system); |
54369368 | 3600 | |
db327c7e KH |
3601 | setup_coding_system (coding_system, &coding); |
3602 | /* Ensure we set Vlast_coding_system_used. */ | |
3603 | set_coding_system = 1; | |
f736ffbf | 3604 | } |
6cf71bf1 | 3605 | |
3d0387c0 RS |
3606 | /* If requested, replace the accessible part of the buffer |
3607 | with the file contents. Avoid replacing text at the | |
3608 | beginning or end of the buffer that matches the file contents; | |
3dbcf3f6 RS |
3609 | that preserves markers pointing to the unchanged parts. |
3610 | ||
3611 | Here we implement this feature in an optimized way | |
3612 | for the case where code conversion is NOT needed. | |
3613 | The following if-statement handles the case of conversion | |
727a0b4a RS |
3614 | in a less optimal way. |
3615 | ||
3616 | If the code conversion is "automatic" then we try using this | |
3617 | method and hope for the best. | |
3618 | But if we discover the need for conversion, we give up on this method | |
3619 | and let the following if-statement handle the replace job. */ | |
3dbcf3f6 | 3620 | if (!NILP (replace) |
f736ffbf | 3621 | && BEGV < ZV |
db327c7e KH |
3622 | && (NILP (coding_system) |
3623 | || ! CODING_REQUIRE_DECODING (&coding))) | |
3d0387c0 | 3624 | { |
ec7adf26 RS |
3625 | /* same_at_start and same_at_end count bytes, |
3626 | because file access counts bytes | |
3627 | and BEG and END count bytes. */ | |
ae19ba7c SM |
3628 | EMACS_INT same_at_start = BEGV_BYTE; |
3629 | EMACS_INT same_at_end = ZV_BYTE; | |
3630 | EMACS_INT overlap; | |
6fdaa9a0 KH |
3631 | /* There is still a possibility we will find the need to do code |
3632 | conversion. If that happens, we set this variable to 1 to | |
727a0b4a | 3633 | give up on handling REPLACE in the optimized way. */ |
6fdaa9a0 | 3634 | int giveup_match_end = 0; |
9c28748f | 3635 | |
4d2a0879 RS |
3636 | if (XINT (beg) != 0) |
3637 | { | |
3638 | if (lseek (fd, XINT (beg), 0) < 0) | |
3639 | report_file_error ("Setting file position", | |
b1d1b865 | 3640 | Fcons (orig_filename, Qnil)); |
4d2a0879 RS |
3641 | } |
3642 | ||
3d0387c0 RS |
3643 | immediate_quit = 1; |
3644 | QUIT; | |
3645 | /* Count how many chars at the start of the file | |
3646 | match the text at the beginning of the buffer. */ | |
3647 | while (1) | |
3648 | { | |
ae19ba7c | 3649 | EMACS_INT nread, bufpos; |
3d0387c0 | 3650 | |
68c45bf0 | 3651 | nread = emacs_read (fd, buffer, sizeof buffer); |
3d0387c0 RS |
3652 | if (nread < 0) |
3653 | error ("IO error reading %s: %s", | |
d5db4077 | 3654 | SDATA (orig_filename), emacs_strerror (errno)); |
3d0387c0 RS |
3655 | else if (nread == 0) |
3656 | break; | |
6fdaa9a0 | 3657 | |
db327c7e | 3658 | if (CODING_REQUIRE_DETECTION (&coding)) |
727a0b4a | 3659 | { |
5b359650 | 3660 | coding_system = detect_coding_system (buffer, nread, nread, 1, 0, |
db327c7e KH |
3661 | coding_system); |
3662 | setup_coding_system (coding_system, &coding); | |
727a0b4a RS |
3663 | } |
3664 | ||
db327c7e KH |
3665 | if (CODING_REQUIRE_DECODING (&coding)) |
3666 | /* We found that the file should be decoded somehow. | |
727a0b4a RS |
3667 | Let's give up here. */ |
3668 | { | |
3669 | giveup_match_end = 1; | |
3670 | break; | |
3671 | } | |
3672 | ||
3d0387c0 | 3673 | bufpos = 0; |
ec7adf26 | 3674 | while (bufpos < nread && same_at_start < ZV_BYTE |
6fdaa9a0 | 3675 | && FETCH_BYTE (same_at_start) == buffer[bufpos]) |
3d0387c0 RS |
3676 | same_at_start++, bufpos++; |
3677 | /* If we found a discrepancy, stop the scan. | |
8e6208c5 | 3678 | Otherwise loop around and scan the next bufferful. */ |
3d0387c0 RS |
3679 | if (bufpos != nread) |
3680 | break; | |
3681 | } | |
3682 | immediate_quit = 0; | |
3683 | /* If the file matches the buffer completely, | |
3684 | there's no need to replace anything. */ | |
ec7adf26 | 3685 | if (same_at_start - BEGV_BYTE == XINT (end)) |
3d0387c0 | 3686 | { |
68c45bf0 | 3687 | emacs_close (fd); |
a1d2b64a | 3688 | specpdl_ptr--; |
1051b3b3 | 3689 | /* Truncate the buffer to the size of the file. */ |
7dae4502 | 3690 | del_range_1 (same_at_start, same_at_end, 0, 0); |
3d0387c0 RS |
3691 | goto handled; |
3692 | } | |
3693 | immediate_quit = 1; | |
3694 | QUIT; | |
3695 | /* Count how many chars at the end of the file | |
6fdaa9a0 KH |
3696 | match the text at the end of the buffer. But, if we have |
3697 | already found that decoding is necessary, don't waste time. */ | |
3698 | while (!giveup_match_end) | |
3d0387c0 | 3699 | { |
ae19ba7c | 3700 | EMACS_INT total_read, nread, bufpos, curpos, trial; |
3d0387c0 RS |
3701 | |
3702 | /* At what file position are we now scanning? */ | |
ec7adf26 | 3703 | curpos = XINT (end) - (ZV_BYTE - same_at_end); |
fc81fa9e KH |
3704 | /* If the entire file matches the buffer tail, stop the scan. */ |
3705 | if (curpos == 0) | |
3706 | break; | |
3d0387c0 RS |
3707 | /* How much can we scan in the next step? */ |
3708 | trial = min (curpos, sizeof buffer); | |
3709 | if (lseek (fd, curpos - trial, 0) < 0) | |
3710 | report_file_error ("Setting file position", | |
b1d1b865 | 3711 | Fcons (orig_filename, Qnil)); |
3d0387c0 | 3712 | |
b02439c8 | 3713 | total_read = nread = 0; |
3d0387c0 RS |
3714 | while (total_read < trial) |
3715 | { | |
68c45bf0 | 3716 | nread = emacs_read (fd, buffer + total_read, trial - total_read); |
2bd2273e | 3717 | if (nread < 0) |
3d0387c0 | 3718 | error ("IO error reading %s: %s", |
d5db4077 | 3719 | SDATA (orig_filename), emacs_strerror (errno)); |
2bd2273e GM |
3720 | else if (nread == 0) |
3721 | break; | |
3d0387c0 RS |
3722 | total_read += nread; |
3723 | } | |
efdc16c9 | 3724 | |
8e6208c5 | 3725 | /* Scan this bufferful from the end, comparing with |
3d0387c0 RS |
3726 | the Emacs buffer. */ |
3727 | bufpos = total_read; | |
efdc16c9 | 3728 | |
3d0387c0 RS |
3729 | /* Compare with same_at_start to avoid counting some buffer text |
3730 | as matching both at the file's beginning and at the end. */ | |
3731 | while (bufpos > 0 && same_at_end > same_at_start | |
6fdaa9a0 | 3732 | && FETCH_BYTE (same_at_end - 1) == buffer[bufpos - 1]) |
3d0387c0 | 3733 | same_at_end--, bufpos--; |
727a0b4a | 3734 | |
3d0387c0 | 3735 | /* If we found a discrepancy, stop the scan. |
8e6208c5 | 3736 | Otherwise loop around and scan the preceding bufferful. */ |
3d0387c0 | 3737 | if (bufpos != 0) |
727a0b4a RS |
3738 | { |
3739 | /* If this discrepancy is because of code conversion, | |
3740 | we cannot use this method; giveup and try the other. */ | |
3741 | if (same_at_end > same_at_start | |
3742 | && FETCH_BYTE (same_at_end - 1) >= 0200 | |
71312b68 | 3743 | && ! NILP (current_buffer->enable_multibyte_characters) |
c8a6d68a | 3744 | && (CODING_MAY_REQUIRE_DECODING (&coding))) |
727a0b4a RS |
3745 | giveup_match_end = 1; |
3746 | break; | |
3747 | } | |
b02439c8 GM |
3748 | |
3749 | if (nread == 0) | |
3750 | break; | |
3d0387c0 RS |
3751 | } |
3752 | immediate_quit = 0; | |
9c28748f | 3753 | |
727a0b4a RS |
3754 | if (! giveup_match_end) |
3755 | { | |
ae19ba7c | 3756 | EMACS_INT temp; |
ec7adf26 | 3757 | |
727a0b4a | 3758 | /* We win! We can handle REPLACE the optimized way. */ |
9c28748f | 3759 | |
20f6783d RS |
3760 | /* Extend the start of non-matching text area to multibyte |
3761 | character boundary. */ | |
3762 | if (! NILP (current_buffer->enable_multibyte_characters)) | |
3763 | while (same_at_start > BEGV_BYTE | |
3764 | && ! CHAR_HEAD_P (FETCH_BYTE (same_at_start))) | |
3765 | same_at_start--; | |
3766 | ||
3767 | /* Extend the end of non-matching text area to multibyte | |
71312b68 RS |
3768 | character boundary. */ |
3769 | if (! NILP (current_buffer->enable_multibyte_characters)) | |
ec7adf26 RS |
3770 | while (same_at_end < ZV_BYTE |
3771 | && ! CHAR_HEAD_P (FETCH_BYTE (same_at_end))) | |
71312b68 RS |
3772 | same_at_end++; |
3773 | ||
727a0b4a | 3774 | /* Don't try to reuse the same piece of text twice. */ |
ec7adf26 RS |
3775 | overlap = (same_at_start - BEGV_BYTE |
3776 | - (same_at_end + st.st_size - ZV)); | |
727a0b4a RS |
3777 | if (overlap > 0) |
3778 | same_at_end += overlap; | |
9c28748f | 3779 | |
727a0b4a | 3780 | /* Arrange to read only the nonmatching middle part of the file. */ |
ec7adf26 RS |
3781 | XSETFASTINT (beg, XINT (beg) + (same_at_start - BEGV_BYTE)); |
3782 | XSETFASTINT (end, XINT (end) - (ZV_BYTE - same_at_end)); | |
3dbcf3f6 | 3783 | |
ec7adf26 | 3784 | del_range_byte (same_at_start, same_at_end, 0); |
727a0b4a | 3785 | /* Insert from the file at the proper position. */ |
ec7adf26 RS |
3786 | temp = BYTE_TO_CHAR (same_at_start); |
3787 | SET_PT_BOTH (temp, same_at_start); | |
727a0b4a RS |
3788 | |
3789 | /* If display currently starts at beginning of line, | |
3790 | keep it that way. */ | |
3791 | if (XBUFFER (XWINDOW (selected_window)->buffer) == current_buffer) | |
3792 | XWINDOW (selected_window)->start_at_line_beg = Fbolp (); | |
3793 | ||
3794 | replace_handled = 1; | |
3795 | } | |
3dbcf3f6 RS |
3796 | } |
3797 | ||
3798 | /* If requested, replace the accessible part of the buffer | |
3799 | with the file contents. Avoid replacing text at the | |
3800 | beginning or end of the buffer that matches the file contents; | |
3801 | that preserves markers pointing to the unchanged parts. | |
3802 | ||
3803 | Here we implement this feature for the case where code conversion | |
3804 | is needed, in a simple way that needs a lot of memory. | |
3805 | The preceding if-statement handles the case of no conversion | |
3806 | in a more optimized way. */ | |
f736ffbf | 3807 | if (!NILP (replace) && ! replace_handled && BEGV < ZV) |
3dbcf3f6 | 3808 | { |
13818c30 SM |
3809 | EMACS_INT same_at_start = BEGV_BYTE; |
3810 | EMACS_INT same_at_end = ZV_BYTE; | |
3811 | EMACS_INT same_at_start_charpos; | |
3812 | EMACS_INT inserted_chars; | |
3813 | EMACS_INT overlap; | |
3814 | EMACS_INT bufpos; | |
db327c7e | 3815 | unsigned char *decoded; |
ae19ba7c | 3816 | EMACS_INT temp; |
8f924df7 | 3817 | int this_count = SPECPDL_INDEX (); |
59c94f03 | 3818 | int multibyte = ! NILP (current_buffer->enable_multibyte_characters); |
5b359650 | 3819 | Lisp_Object conversion_buffer; |
db327c7e | 3820 | |
5b359650 | 3821 | conversion_buffer = code_conversion_save (1, multibyte); |
3dbcf3f6 RS |
3822 | |
3823 | /* First read the whole file, performing code conversion into | |
3824 | CONVERSION_BUFFER. */ | |
3825 | ||
727a0b4a | 3826 | if (lseek (fd, XINT (beg), 0) < 0) |
8f924df7 KH |
3827 | report_file_error ("Setting file position", |
3828 | Fcons (orig_filename, Qnil)); | |
727a0b4a | 3829 | |
3dbcf3f6 RS |
3830 | total = st.st_size; /* Total bytes in the file. */ |
3831 | how_much = 0; /* Bytes read from file so far. */ | |
3832 | inserted = 0; /* Bytes put into CONVERSION_BUFFER so far. */ | |
3833 | unprocessed = 0; /* Bytes not processed in previous loop. */ | |
3834 | ||
2ba48777 | 3835 | GCPRO1 (conversion_buffer); |
3dbcf3f6 RS |
3836 | while (how_much < total) |
3837 | { | |
db327c7e KH |
3838 | /* We read one bunch by one (READ_BUF_SIZE bytes) to allow |
3839 | quitting while reading a huge while. */ | |
3dbcf3f6 | 3840 | /* try is reserved in some compilers (Microsoft C) */ |
ae19ba7c SM |
3841 | EMACS_INT trytry = min (total - how_much, |
3842 | READ_BUF_SIZE - unprocessed); | |
3843 | EMACS_INT this; | |
3dbcf3f6 RS |
3844 | |
3845 | /* Allow quitting out of the actual I/O. */ | |
3846 | immediate_quit = 1; | |
3847 | QUIT; | |
db327c7e | 3848 | this = emacs_read (fd, read_buf + unprocessed, trytry); |
3dbcf3f6 RS |
3849 | immediate_quit = 0; |
3850 | ||
db327c7e | 3851 | if (this <= 0) |
3dbcf3f6 | 3852 | { |
db327c7e KH |
3853 | if (this < 0) |
3854 | how_much = this; | |
3dbcf3f6 RS |
3855 | break; |
3856 | } | |
3857 | ||
3858 | how_much += this; | |
3859 | ||
bf1c0f27 SM |
3860 | BUF_TEMP_SET_PT (XBUFFER (conversion_buffer), |
3861 | BUF_Z (XBUFFER (conversion_buffer))); | |
db327c7e KH |
3862 | decode_coding_c_string (&coding, read_buf, unprocessed + this, |
3863 | conversion_buffer); | |
3864 | unprocessed = coding.carryover_bytes; | |
3865 | if (coding.carryover_bytes > 0) | |
3866 | bcopy (coding.carryover, read_buf, unprocessed); | |
3dbcf3f6 | 3867 | } |
2ba48777 | 3868 | UNGCPRO; |
db327c7e | 3869 | emacs_close (fd); |
3dbcf3f6 | 3870 | |
db65a627 CY |
3871 | /* We should remove the unwind_protect calling |
3872 | close_file_unwind, but other stuff has been added the stack, | |
3873 | so defer the removal till we reach the `handled' label. */ | |
3874 | deferred_remove_unwind_protect = 1; | |
3875 | ||
db327c7e KH |
3876 | /* At this point, HOW_MUCH should equal TOTAL, or should be <= 0 |
3877 | if we couldn't read the file. */ | |
3dbcf3f6 RS |
3878 | |
3879 | if (how_much < 0) | |
4ed925c6 MB |
3880 | error ("IO error reading %s: %s", |
3881 | SDATA (orig_filename), emacs_strerror (errno)); | |
3dbcf3f6 | 3882 | |
db327c7e KH |
3883 | if (unprocessed > 0) |
3884 | { | |
3885 | coding.mode |= CODING_MODE_LAST_BLOCK; | |
3886 | decode_coding_c_string (&coding, read_buf, unprocessed, | |
3887 | conversion_buffer); | |
3888 | coding.mode &= ~CODING_MODE_LAST_BLOCK; | |
3889 | } | |
3890 | ||
50b06221 | 3891 | coding_system = CODING_ID_NAME (coding.id); |
f6a07420 | 3892 | set_coding_system = 1; |
db327c7e | 3893 | decoded = BUF_BEG_ADDR (XBUFFER (conversion_buffer)); |
50342b35 KH |
3894 | inserted = (BUF_Z_BYTE (XBUFFER (conversion_buffer)) |
3895 | - BUF_BEG_BYTE (XBUFFER (conversion_buffer))); | |
db327c7e KH |
3896 | |
3897 | /* Compare the beginning of the converted string with the buffer | |
3898 | text. */ | |
3dbcf3f6 RS |
3899 | |
3900 | bufpos = 0; | |
3901 | while (bufpos < inserted && same_at_start < same_at_end | |
db327c7e | 3902 | && FETCH_BYTE (same_at_start) == decoded[bufpos]) |
3dbcf3f6 RS |
3903 | same_at_start++, bufpos++; |
3904 | ||
db327c7e | 3905 | /* If the file matches the head of buffer completely, |
3dbcf3f6 RS |
3906 | there's no need to replace anything. */ |
3907 | ||
3908 | if (bufpos == inserted) | |
3909 | { | |
3dbcf3f6 | 3910 | /* Truncate the buffer to the size of the file. */ |
18a9f8d9 SM |
3911 | if (same_at_start == same_at_end) |
3912 | nochange = 1; | |
3913 | else | |
3914 | del_range_byte (same_at_start, same_at_end, 0); | |
427f5aab | 3915 | inserted = 0; |
e8553dd1 KH |
3916 | |
3917 | unbind_to (this_count, Qnil); | |
3dbcf3f6 RS |
3918 | goto handled; |
3919 | } | |
3920 | ||
db327c7e KH |
3921 | /* Extend the start of non-matching text area to the previous |
3922 | multibyte character boundary. */ | |
20f6783d RS |
3923 | if (! NILP (current_buffer->enable_multibyte_characters)) |
3924 | while (same_at_start > BEGV_BYTE | |
3925 | && ! CHAR_HEAD_P (FETCH_BYTE (same_at_start))) | |
3926 | same_at_start--; | |
3927 | ||
3dbcf3f6 RS |
3928 | /* Scan this bufferful from the end, comparing with |
3929 | the Emacs buffer. */ | |
3930 | bufpos = inserted; | |
3931 | ||
3932 | /* Compare with same_at_start to avoid counting some buffer text | |
3933 | as matching both at the file's beginning and at the end. */ | |
3934 | while (bufpos > 0 && same_at_end > same_at_start | |
db327c7e | 3935 | && FETCH_BYTE (same_at_end - 1) == decoded[bufpos - 1]) |
3dbcf3f6 RS |
3936 | same_at_end--, bufpos--; |
3937 | ||
db327c7e KH |
3938 | /* Extend the end of non-matching text area to the next |
3939 | multibyte character boundary. */ | |
20f6783d RS |
3940 | if (! NILP (current_buffer->enable_multibyte_characters)) |
3941 | while (same_at_end < ZV_BYTE | |
3942 | && ! CHAR_HEAD_P (FETCH_BYTE (same_at_end))) | |
3943 | same_at_end++; | |
3944 | ||
3dbcf3f6 | 3945 | /* Don't try to reuse the same piece of text twice. */ |
ec7adf26 | 3946 | overlap = same_at_start - BEGV_BYTE - (same_at_end + inserted - ZV_BYTE); |
3dbcf3f6 RS |
3947 | if (overlap > 0) |
3948 | same_at_end += overlap; | |
3949 | ||
727a0b4a RS |
3950 | /* If display currently starts at beginning of line, |
3951 | keep it that way. */ | |
3952 | if (XBUFFER (XWINDOW (selected_window)->buffer) == current_buffer) | |
3953 | XWINDOW (selected_window)->start_at_line_beg = Fbolp (); | |
3954 | ||
3dbcf3f6 RS |
3955 | /* Replace the chars that we need to replace, |
3956 | and update INSERTED to equal the number of bytes | |
db327c7e | 3957 | we are taking from the decoded string. */ |
4b70e2c9 | 3958 | inserted -= (ZV_BYTE - same_at_end) + (same_at_start - BEGV_BYTE); |
427f5aab | 3959 | |
643c73b9 | 3960 | if (same_at_end != same_at_start) |
427f5aab KH |
3961 | { |
3962 | del_range_byte (same_at_start, same_at_end, 0); | |
3963 | temp = GPT; | |
3964 | same_at_start = GPT_BYTE; | |
3965 | } | |
643c73b9 RS |
3966 | else |
3967 | { | |
643c73b9 | 3968 | temp = BYTE_TO_CHAR (same_at_start); |
643c73b9 | 3969 | } |
427f5aab KH |
3970 | /* Insert from the file at the proper position. */ |
3971 | SET_PT_BOTH (temp, same_at_start); | |
50342b35 KH |
3972 | same_at_start_charpos |
3973 | = buf_bytepos_to_charpos (XBUFFER (conversion_buffer), | |
7f5d2c72 SM |
3974 | same_at_start - BEGV_BYTE |
3975 | + BUF_BEG_BYTE (XBUFFER (conversion_buffer))); | |
50342b35 KH |
3976 | inserted_chars |
3977 | = (buf_bytepos_to_charpos (XBUFFER (conversion_buffer), | |
7f5d2c72 SM |
3978 | same_at_start + inserted - BEGV_BYTE |
3979 | + BUF_BEG_BYTE (XBUFFER (conversion_buffer))) | |
50342b35 | 3980 | - same_at_start_charpos); |
d07af40d KH |
3981 | /* This binding is to avoid ask-user-about-supersession-threat |
3982 | being called in insert_from_buffer (via in | |
3983 | prepare_to_modify_buffer). */ | |
3984 | specbind (intern ("buffer-file-name"), Qnil); | |
db327c7e | 3985 | insert_from_buffer (XBUFFER (conversion_buffer), |
50342b35 | 3986 | same_at_start_charpos, inserted_chars, 0); |
427f5aab KH |
3987 | /* Set `inserted' to the number of inserted characters. */ |
3988 | inserted = PT - temp; | |
77343e1d KH |
3989 | /* Set point before the inserted characters. */ |
3990 | SET_PT_BOTH (temp, same_at_start); | |
3dbcf3f6 | 3991 | |
db327c7e | 3992 | unbind_to (this_count, Qnil); |
3dbcf3f6 | 3993 | |
3dbcf3f6 | 3994 | goto handled; |
3d0387c0 RS |
3995 | } |
3996 | ||
d4b8687b RS |
3997 | if (! not_regular) |
3998 | { | |
3999 | register Lisp_Object temp; | |
7fded690 | 4000 | |
d4b8687b | 4001 | total = XINT (end) - XINT (beg); |
570d7624 | 4002 | |
d4b8687b RS |
4003 | /* Make sure point-max won't overflow after this insertion. */ |
4004 | XSETINT (temp, total); | |
4005 | if (total != XINT (temp)) | |
4006 | error ("Maximum buffer size exceeded"); | |
4007 | } | |
4008 | else | |
4009 | /* For a special file, all we can do is guess. */ | |
4010 | total = READ_BUF_SIZE; | |
570d7624 | 4011 | |
68780e2a RS |
4012 | if (NILP (visit) && inserted > 0) |
4013 | { | |
4014 | #ifdef CLASH_DETECTION | |
4015 | if (!NILP (current_buffer->file_truename) | |
4016 | /* Make binding buffer-file-name to nil effective. */ | |
4017 | && !NILP (current_buffer->filename) | |
4018 | && SAVE_MODIFF >= MODIFF) | |
4019 | we_locked_file = 1; | |
4020 | #endif /* CLASH_DETECTION */ | |
4021 | prepare_to_modify_buffer (GPT, GPT, NULL); | |
4022 | } | |
570d7624 | 4023 | |
7fe52289 | 4024 | move_gap (PT); |
7fded690 JB |
4025 | if (GAP_SIZE < total) |
4026 | make_gap (total - GAP_SIZE); | |
4027 | ||
a1d2b64a | 4028 | if (XINT (beg) != 0 || !NILP (replace)) |
7fded690 JB |
4029 | { |
4030 | if (lseek (fd, XINT (beg), 0) < 0) | |
b1d1b865 RS |
4031 | report_file_error ("Setting file position", |
4032 | Fcons (orig_filename, Qnil)); | |
7fded690 JB |
4033 | } |
4034 | ||
6fdaa9a0 | 4035 | /* In the following loop, HOW_MUCH contains the total bytes read so |
c8a6d68a KH |
4036 | far for a regular file, and not changed for a special file. But, |
4037 | before exiting the loop, it is set to a negative value if I/O | |
4038 | error occurs. */ | |
a1d2b64a | 4039 | how_much = 0; |
efdc16c9 | 4040 | |
6fdaa9a0 KH |
4041 | /* Total bytes inserted. */ |
4042 | inserted = 0; | |
efdc16c9 | 4043 | |
c8a6d68a | 4044 | /* Here, we don't do code conversion in the loop. It is done by |
db327c7e | 4045 | decode_coding_gap after all data are read into the buffer. */ |
1b978129 | 4046 | { |
ae19ba7c | 4047 | EMACS_INT gap_size = GAP_SIZE; |
efdc16c9 | 4048 | |
1b978129 GM |
4049 | while (how_much < total) |
4050 | { | |
5e570b75 | 4051 | /* try is reserved in some compilers (Microsoft C) */ |
ae19ba7c SM |
4052 | EMACS_INT trytry = min (total - how_much, READ_BUF_SIZE); |
4053 | EMACS_INT this; | |
570d7624 | 4054 | |
1b978129 GM |
4055 | if (not_regular) |
4056 | { | |
4057 | Lisp_Object val; | |
570d7624 | 4058 | |
1b978129 GM |
4059 | /* Maybe make more room. */ |
4060 | if (gap_size < trytry) | |
4061 | { | |
4062 | make_gap (total - gap_size); | |
4063 | gap_size = GAP_SIZE; | |
4064 | } | |
4065 | ||
4066 | /* Read from the file, capturing `quit'. When an | |
4067 | error occurs, end the loop, and arrange for a quit | |
4068 | to be signaled after decoding the text we read. */ | |
4069 | non_regular_fd = fd; | |
4070 | non_regular_inserted = inserted; | |
4071 | non_regular_nbytes = trytry; | |
4072 | val = internal_condition_case_1 (read_non_regular, Qnil, Qerror, | |
4073 | read_non_regular_quit); | |
4074 | if (NILP (val)) | |
4075 | { | |
4076 | read_quit = 1; | |
4077 | break; | |
4078 | } | |
4079 | ||
4080 | this = XINT (val); | |
4081 | } | |
4082 | else | |
4083 | { | |
4084 | /* Allow quitting out of the actual I/O. We don't make text | |
4085 | part of the buffer until all the reading is done, so a C-g | |
4086 | here doesn't do any harm. */ | |
4087 | immediate_quit = 1; | |
4088 | QUIT; | |
28c3eb5a | 4089 | this = emacs_read (fd, BEG_ADDR + PT_BYTE - BEG_BYTE + inserted, trytry); |
1b978129 GM |
4090 | immediate_quit = 0; |
4091 | } | |
efdc16c9 | 4092 | |
1b978129 GM |
4093 | if (this <= 0) |
4094 | { | |
4095 | how_much = this; | |
4096 | break; | |
4097 | } | |
4098 | ||
4099 | gap_size -= this; | |
4100 | ||
4101 | /* For a regular file, where TOTAL is the real size, | |
4102 | count HOW_MUCH to compare with it. | |
4103 | For a special file, where TOTAL is just a buffer size, | |
4104 | so don't bother counting in HOW_MUCH. | |
4105 | (INSERTED is where we count the number of characters inserted.) */ | |
4106 | if (! not_regular) | |
4107 | how_much += this; | |
4108 | inserted += this; | |
4109 | } | |
4110 | } | |
4111 | ||
68780e2a RS |
4112 | /* Now we have read all the file data into the gap. |
4113 | If it was empty, undo marking the buffer modified. */ | |
4114 | ||
4115 | if (inserted == 0) | |
4116 | { | |
6840d350 | 4117 | #ifdef CLASH_DETECTION |
68780e2a RS |
4118 | if (we_locked_file) |
4119 | unlock_file (current_buffer->file_truename); | |
6840d350 | 4120 | #endif |
68780e2a RS |
4121 | Vdeactivate_mark = old_Vdeactivate_mark; |
4122 | } | |
83c1cf6d RS |
4123 | else |
4124 | Vdeactivate_mark = Qt; | |
68780e2a | 4125 | |
1b978129 GM |
4126 | /* Make the text read part of the buffer. */ |
4127 | GAP_SIZE -= inserted; | |
4128 | GPT += inserted; | |
4129 | GPT_BYTE += inserted; | |
4130 | ZV += inserted; | |
4131 | ZV_BYTE += inserted; | |
4132 | Z += inserted; | |
4133 | Z_BYTE += inserted; | |
6fdaa9a0 | 4134 | |
c8a6d68a KH |
4135 | if (GAP_SIZE > 0) |
4136 | /* Put an anchor to ensure multi-byte form ends at gap. */ | |
4137 | *GPT_ADDR = 0; | |
d4b8687b | 4138 | |
68c45bf0 | 4139 | emacs_close (fd); |
6fdaa9a0 | 4140 | |
c8a6d68a KH |
4141 | /* Discard the unwind protect for closing the file. */ |
4142 | specpdl_ptr--; | |
6fdaa9a0 | 4143 | |
c8a6d68a KH |
4144 | if (how_much < 0) |
4145 | error ("IO error reading %s: %s", | |
d5db4077 | 4146 | SDATA (orig_filename), emacs_strerror (errno)); |
ec7adf26 | 4147 | |
f8569325 DL |
4148 | notfound: |
4149 | ||
db327c7e | 4150 | if (NILP (coding_system)) |
c8a6d68a | 4151 | { |
2df42e09 | 4152 | /* The coding system is not yet decided. Decide it by an |
dfe35e7b RS |
4153 | optimized method for handling `coding:' tag. |
4154 | ||
4155 | Note that we can get here only if the buffer was empty | |
4156 | before the insertion. */ | |
f736ffbf | 4157 | |
2df42e09 | 4158 | if (!NILP (Vcoding_system_for_read)) |
db327c7e | 4159 | coding_system = Vcoding_system_for_read; |
2df42e09 KH |
4160 | else |
4161 | { | |
98a7d268 KH |
4162 | /* Since we are sure that the current buffer was empty |
4163 | before the insertion, we can toggle | |
4164 | enable-multibyte-characters directly here without taking | |
9a7f80aa KH |
4165 | care of marker adjustment. By this way, we can run Lisp |
4166 | program safely before decoding the inserted text. */ | |
98a7d268 | 4167 | Lisp_Object unwind_data; |
9a7f80aa | 4168 | int count = SPECPDL_INDEX (); |
2df42e09 | 4169 | |
98a7d268 KH |
4170 | unwind_data = Fcons (current_buffer->enable_multibyte_characters, |
4171 | Fcons (current_buffer->undo_list, | |
4172 | Fcurrent_buffer ())); | |
2b89769e | 4173 | current_buffer->enable_multibyte_characters = Qnil; |
98a7d268 KH |
4174 | current_buffer->undo_list = Qt; |
4175 | record_unwind_protect (decide_coding_unwind, unwind_data); | |
4176 | ||
4177 | if (inserted > 0 && ! NILP (Vset_auto_coding_function)) | |
4178 | { | |
db327c7e | 4179 | coding_system = call2 (Vset_auto_coding_function, |
8f924df7 | 4180 | filename, make_number (inserted)); |
2df42e09 | 4181 | } |
f736ffbf | 4182 | |
db327c7e | 4183 | if (NILP (coding_system)) |
2df42e09 KH |
4184 | { |
4185 | /* If the coding system is not yet decided, check | |
4186 | file-coding-system-alist. */ | |
8f924df7 | 4187 | Lisp_Object args[6]; |
f736ffbf | 4188 | |
2df42e09 KH |
4189 | args[0] = Qinsert_file_contents, args[1] = orig_filename; |
4190 | args[2] = visit, args[3] = beg, args[4] = end, args[5] = Qnil; | |
8f924df7 KH |
4191 | coding_system = Ffind_operation_coding_system (6, args); |
4192 | if (CONSP (coding_system)) | |
4193 | coding_system = XCAR (coding_system); | |
f736ffbf | 4194 | } |
98a7d268 KH |
4195 | unbind_to (count, Qnil); |
4196 | inserted = Z_BYTE - BEG_BYTE; | |
2df42e09 | 4197 | } |
f736ffbf | 4198 | |
db327c7e KH |
4199 | if (NILP (coding_system)) |
4200 | coding_system = Qundecided; | |
4201 | else | |
4202 | CHECK_CODING_SYSTEM (coding_system); | |
f736ffbf | 4203 | |
db327c7e | 4204 | if (NILP (current_buffer->enable_multibyte_characters)) |
237a6fd2 | 4205 | /* We must suppress all character code conversion except for |
2df42e09 | 4206 | end-of-line conversion. */ |
db327c7e | 4207 | coding_system = raw_text_coding_system (coding_system); |
db327c7e KH |
4208 | setup_coding_system (coding_system, &coding); |
4209 | /* Ensure we set Vlast_coding_system_used. */ | |
4210 | set_coding_system = 1; | |
2df42e09 | 4211 | } |
f736ffbf | 4212 | |
db327c7e | 4213 | if (!NILP (visit)) |
8c3b9441 | 4214 | { |
db327c7e | 4215 | /* When we visit a file by raw-text, we change the buffer to |
9a7f80aa | 4216 | unibyte. */ |
db327c7e KH |
4217 | if (CODING_FOR_UNIBYTE (&coding) |
4218 | /* Can't do this if part of the buffer might be preserved. */ | |
4219 | && NILP (replace)) | |
4220 | /* Visiting a file with these coding system makes the buffer | |
4221 | unibyte. */ | |
4222 | current_buffer->enable_multibyte_characters = Qnil; | |
8c3b9441 KH |
4223 | } |
4224 | ||
8f924df7 | 4225 | coding.dst_multibyte = ! NILP (current_buffer->enable_multibyte_characters); |
5b359650 | 4226 | if (CODING_MAY_REQUIRE_DECODING (&coding) |
1c157f8d | 4227 | && (inserted > 0 || CODING_REQUIRE_FLUSHING (&coding))) |
2df42e09 | 4228 | { |
db327c7e KH |
4229 | move_gap_both (PT, PT_BYTE); |
4230 | GAP_SIZE += inserted; | |
4231 | ZV_BYTE -= inserted; | |
4232 | Z_BYTE -= inserted; | |
4233 | ZV -= inserted; | |
4234 | Z -= inserted; | |
4235 | decode_coding_gap (&coding, inserted, inserted); | |
4236 | inserted = coding.produced_char; | |
5b359650 | 4237 | coding_system = CODING_ID_NAME (coding.id); |
2df42e09 | 4238 | } |
db327c7e KH |
4239 | else if (inserted > 0) |
4240 | adjust_after_insert (PT, PT_BYTE, PT + inserted, PT_BYTE + inserted, | |
4241 | inserted); | |
570d7624 | 4242 | |
cf6d2357 RS |
4243 | /* Now INSERTED is measured in characters. */ |
4244 | ||
04e6f79c | 4245 | #ifdef DOS_NT |
2df42e09 KH |
4246 | /* Use the conversion type to determine buffer-file-type |
4247 | (find-buffer-file-type is now used to help determine the | |
4248 | conversion). */ | |
652a7e95 | 4249 | if ((VECTORP (CODING_ID_EOL_TYPE (coding.id)) |
f7ce9c0c | 4250 | || EQ (CODING_ID_EOL_TYPE (coding.id), Qunix)) |
2df42e09 KH |
4251 | && ! CODING_REQUIRE_DECODING (&coding)) |
4252 | current_buffer->buffer_file_type = Qt; | |
4253 | else | |
4254 | current_buffer->buffer_file_type = Qnil; | |
04e6f79c | 4255 | #endif |
570d7624 | 4256 | |
32f4334d | 4257 | handled: |
570d7624 | 4258 | |
db65a627 CY |
4259 | if (deferred_remove_unwind_protect) |
4260 | /* If requested above, discard the unwind protect for closing the | |
4261 | file. */ | |
4262 | specpdl_ptr--; | |
4263 | ||
265a9e55 | 4264 | if (!NILP (visit)) |
570d7624 | 4265 | { |
18a9f8d9 | 4266 | if (!EQ (current_buffer->undo_list, Qt) && !nochange) |
cfadd376 | 4267 | current_buffer->undo_list = Qnil; |
62bcf009 | 4268 | |
a7e82472 RS |
4269 | if (NILP (handler)) |
4270 | { | |
4271 | current_buffer->modtime = st.st_mtime; | |
58b963f7 | 4272 | current_buffer->modtime_size = st.st_size; |
b1d1b865 | 4273 | current_buffer->filename = orig_filename; |
a7e82472 | 4274 | } |
62bcf009 | 4275 | |
95385625 | 4276 | SAVE_MODIFF = MODIFF; |
0b5397c2 | 4277 | BUF_AUTOSAVE_MODIFF (current_buffer) = MODIFF; |
2acfd7ae | 4278 | XSETFASTINT (current_buffer->save_length, Z - BEG); |
570d7624 | 4279 | #ifdef CLASH_DETECTION |
32f4334d RS |
4280 | if (NILP (handler)) |
4281 | { | |
f471f4c2 RS |
4282 | if (!NILP (current_buffer->file_truename)) |
4283 | unlock_file (current_buffer->file_truename); | |
32f4334d RS |
4284 | unlock_file (filename); |
4285 | } | |
570d7624 | 4286 | #endif /* CLASH_DETECTION */ |
330bfe57 | 4287 | if (not_regular) |
24b1ddad KS |
4288 | xsignal2 (Qfile_error, |
4289 | build_string ("not a regular file"), orig_filename); | |
570d7624 JB |
4290 | } |
4291 | ||
b6426b03 | 4292 | if (set_coding_system) |
8f924df7 | 4293 | Vlast_coding_system_used = coding_system; |
b6426b03 | 4294 | |
2080470e | 4295 | if (! NILP (Ffboundp (Qafter_insert_file_set_coding))) |
b6426b03 | 4296 | { |
37a3c774 KH |
4297 | insval = call2 (Qafter_insert_file_set_coding, make_number (inserted), |
4298 | visit); | |
b6426b03 KH |
4299 | if (! NILP (insval)) |
4300 | { | |
4301 | CHECK_NUMBER (insval); | |
4302 | inserted = XFASTINT (insval); | |
4303 | } | |
4304 | } | |
4305 | ||
6420e80c | 4306 | /* Decode file format. */ |
c8a6d68a | 4307 | if (inserted > 0) |
0d420e88 | 4308 | { |
6420e80c | 4309 | /* Don't run point motion or modification hooks when decoding. */ |
6f2528d8 | 4310 | int count = SPECPDL_INDEX (); |
ae19ba7c | 4311 | EMACS_INT old_inserted = inserted; |
6f2528d8 MR |
4312 | specbind (Qinhibit_point_motion_hooks, Qt); |
4313 | specbind (Qinhibit_modification_hooks, Qt); | |
4314 | ||
6420e80c | 4315 | /* Save old undo list and don't record undo for decoding. */ |
6f2528d8 MR |
4316 | old_undo = current_buffer->undo_list; |
4317 | current_buffer->undo_list = Qt; | |
efdc16c9 | 4318 | |
6f2528d8 | 4319 | if (NILP (replace)) |
ed8e506f | 4320 | { |
6f2528d8 MR |
4321 | insval = call3 (Qformat_decode, |
4322 | Qnil, make_number (inserted), visit); | |
4323 | CHECK_NUMBER (insval); | |
4324 | inserted = XFASTINT (insval); | |
4325 | } | |
4326 | else | |
4327 | { | |
4328 | /* If REPLACE is non-nil and we succeeded in not replacing the | |
6420e80c AS |
4329 | beginning or end of the buffer text with the file's contents, |
4330 | call format-decode with `point' positioned at the beginning | |
4331 | of the buffer and `inserted' equalling the number of | |
4332 | characters in the buffer. Otherwise, format-decode might | |
4333 | fail to correctly analyze the beginning or end of the buffer. | |
4334 | Hence we temporarily save `point' and `inserted' here and | |
4335 | restore `point' iff format-decode did not insert or delete | |
4336 | any text. Otherwise we leave `point' at point-min. */ | |
ae19ba7c SM |
4337 | EMACS_INT opoint = PT; |
4338 | EMACS_INT opoint_byte = PT_BYTE; | |
4339 | EMACS_INT oinserted = ZV - BEGV; | |
cac4219c | 4340 | int ochars_modiff = CHARS_MODIFF; |
1f163f28 MA |
4341 | |
4342 | TEMP_SET_PT_BOTH (BEGV, BEGV_BYTE); | |
6f2528d8 MR |
4343 | insval = call3 (Qformat_decode, |
4344 | Qnil, make_number (oinserted), visit); | |
4345 | CHECK_NUMBER (insval); | |
cac4219c MR |
4346 | if (ochars_modiff == CHARS_MODIFF) |
4347 | /* format_decode didn't modify buffer's characters => move | |
4348 | point back to position before inserted text and leave | |
6420e80c | 4349 | value of inserted alone. */ |
6f2528d8 | 4350 | SET_PT_BOTH (opoint, opoint_byte); |
cac4219c MR |
4351 | else |
4352 | /* format_decode modified buffer's characters => consider | |
6420e80c | 4353 | entire buffer changed and leave point at point-min. */ |
cac4219c | 4354 | inserted = XFASTINT (insval); |
ed8e506f | 4355 | } |
efdc16c9 | 4356 | |
6f2528d8 | 4357 | /* For consistency with format-decode call these now iff inserted > 0 |
6420e80c | 4358 | (martin 2007-06-28). */ |
6f2528d8 MR |
4359 | p = Vafter_insert_file_functions; |
4360 | while (CONSP (p)) | |
4361 | { | |
4362 | if (NILP (replace)) | |
4363 | { | |
4364 | insval = call1 (XCAR (p), make_number (inserted)); | |
4365 | if (!NILP (insval)) | |
4366 | { | |
4367 | CHECK_NUMBER (insval); | |
4368 | inserted = XFASTINT (insval); | |
4369 | } | |
4370 | } | |
4371 | else | |
4372 | { | |
6420e80c AS |
4373 | /* For the rationale of this see the comment on |
4374 | format-decode above. */ | |
ae19ba7c SM |
4375 | EMACS_INT opoint = PT; |
4376 | EMACS_INT opoint_byte = PT_BYTE; | |
4377 | EMACS_INT oinserted = ZV - BEGV; | |
cac4219c | 4378 | int ochars_modiff = CHARS_MODIFF; |
1f163f28 | 4379 | |
6f2528d8 MR |
4380 | TEMP_SET_PT_BOTH (BEGV, BEGV_BYTE); |
4381 | insval = call1 (XCAR (p), make_number (oinserted)); | |
4382 | if (!NILP (insval)) | |
4383 | { | |
4384 | CHECK_NUMBER (insval); | |
cac4219c MR |
4385 | if (ochars_modiff == CHARS_MODIFF) |
4386 | /* after_insert_file_functions didn't modify | |
4387 | buffer's characters => move point back to | |
4388 | position before inserted text and leave value of | |
6420e80c | 4389 | inserted alone. */ |
6f2528d8 | 4390 | SET_PT_BOTH (opoint, opoint_byte); |
cac4219c MR |
4391 | else |
4392 | /* after_insert_file_functions did modify buffer's | |
4393 | characters => consider entire buffer changed and | |
6420e80c | 4394 | leave point at point-min. */ |
cac4219c | 4395 | inserted = XFASTINT (insval); |
6f2528d8 MR |
4396 | } |
4397 | } | |
4398 | ||
4399 | QUIT; | |
4400 | p = XCDR (p); | |
ed8e506f | 4401 | } |
efdc16c9 | 4402 | |
6f2528d8 MR |
4403 | if (NILP (visit)) |
4404 | { | |
6420e80c AS |
4405 | current_buffer->undo_list = old_undo; |
4406 | if (CONSP (old_undo) && inserted != old_inserted) | |
6f2528d8 | 4407 | { |
6420e80c AS |
4408 | /* Adjust the last undo record for the size change during |
4409 | the format conversion. */ | |
6f2528d8 | 4410 | Lisp_Object tem = XCAR (old_undo); |
6420e80c AS |
4411 | if (CONSP (tem) && INTEGERP (XCAR (tem)) |
4412 | && INTEGERP (XCDR (tem)) | |
4413 | && XFASTINT (XCDR (tem)) == PT + old_inserted) | |
4414 | XSETCDR (tem, make_number (PT + inserted)); | |
6f2528d8 MR |
4415 | } |
4416 | } | |
6f2528d8 | 4417 | else |
1bc99c9c | 4418 | /* If undo_list was Qt before, keep it that way. |
6420e80c | 4419 | Otherwise start with an empty undo_list. */ |
1bc99c9c | 4420 | current_buffer->undo_list = EQ (old_undo, Qt) ? Qt : Qnil; |
efdc16c9 | 4421 | |
6f2528d8 | 4422 | unbind_to (count, Qnil); |
0d420e88 BG |
4423 | } |
4424 | ||
0342d8c5 RS |
4425 | /* Call after-change hooks for the inserted text, aside from the case |
4426 | of normal visiting (not with REPLACE), which is done in a new buffer | |
4427 | "before" the buffer is changed. */ | |
c8a6d68a | 4428 | if (inserted > 0 && total > 0 |
0342d8c5 | 4429 | && (NILP (visit) || !NILP (replace))) |
ce51c54c KH |
4430 | { |
4431 | signal_after_change (PT, 0, inserted); | |
4432 | update_compositions (PT, PT, CHECK_BORDER); | |
4433 | } | |
b56567b5 | 4434 | |
f8569325 DL |
4435 | if (!NILP (visit) |
4436 | && current_buffer->modtime == -1) | |
4437 | { | |
4438 | /* If visiting nonexistent file, return nil. */ | |
4439 | report_file_error ("Opening input file", Fcons (orig_filename, Qnil)); | |
d6a3cc15 RS |
4440 | } |
4441 | ||
1b978129 GM |
4442 | if (read_quit) |
4443 | Fsignal (Qquit, Qnil); | |
4444 | ||
ec7adf26 | 4445 | /* ??? Retval needs to be dealt with in all cases consistently. */ |
a1d2b64a | 4446 | if (NILP (val)) |
b1d1b865 | 4447 | val = Fcons (orig_filename, |
a1d2b64a RS |
4448 | Fcons (make_number (inserted), |
4449 | Qnil)); | |
4450 | ||
4451 | RETURN_UNGCPRO (unbind_to (count, val)); | |
570d7624 | 4452 | } |
7fded690 | 4453 | \f |
236a12f2 | 4454 | static Lisp_Object build_annotations P_ ((Lisp_Object, Lisp_Object)); |
d6a3cc15 | 4455 | |
199607e4 | 4456 | static Lisp_Object |
67fbc0cb CY |
4457 | build_annotations_unwind (arg) |
4458 | Lisp_Object arg; | |
6fc6f94b | 4459 | { |
67fbc0cb | 4460 | Vwrite_region_annotation_buffers = arg; |
6fc6f94b RS |
4461 | return Qnil; |
4462 | } | |
4463 | ||
7c82a4a9 SM |
4464 | /* Decide the coding-system to encode the data with. */ |
4465 | ||
c934586d | 4466 | static Lisp_Object |
7c82a4a9 SM |
4467 | choose_write_coding_system (start, end, filename, |
4468 | append, visit, lockname, coding) | |
4469 | Lisp_Object start, end, filename, append, visit, lockname; | |
4470 | struct coding_system *coding; | |
4471 | { | |
4472 | Lisp_Object val; | |
75421805 | 4473 | Lisp_Object eol_parent = Qnil; |
7c82a4a9 | 4474 | |
6b61353c KH |
4475 | if (auto_saving |
4476 | && NILP (Fstring_equal (current_buffer->filename, | |
4477 | current_buffer->auto_save_file_name))) | |
75421805 KH |
4478 | { |
4479 | val = Qutf_8_emacs; | |
4480 | eol_parent = Qunix; | |
4481 | } | |
7c82a4a9 | 4482 | else if (!NILP (Vcoding_system_for_write)) |
42b01e1e KH |
4483 | { |
4484 | val = Vcoding_system_for_write; | |
4485 | if (coding_system_require_warning | |
4486 | && !NILP (Ffboundp (Vselect_safe_coding_system_function))) | |
4487 | /* Confirm that VAL can surely encode the current region. */ | |
4488 | val = call5 (Vselect_safe_coding_system_function, | |
4489 | start, end, Fcons (Qt, Fcons (val, Qnil)), | |
4490 | Qnil, filename); | |
4491 | } | |
7c82a4a9 SM |
4492 | else |
4493 | { | |
4494 | /* If the variable `buffer-file-coding-system' is set locally, | |
4495 | it means that the file was read with some kind of code | |
4496 | conversion or the variable is explicitly set by users. We | |
4497 | had better write it out with the same coding system even if | |
4498 | `enable-multibyte-characters' is nil. | |
4499 | ||
4500 | If it is not set locally, we anyway have to convert EOL | |
4501 | format if the default value of `buffer-file-coding-system' | |
4502 | tells that it is not Unix-like (LF only) format. */ | |
4503 | int using_default_coding = 0; | |
4504 | int force_raw_text = 0; | |
4505 | ||
4506 | val = current_buffer->buffer_file_coding_system; | |
4507 | if (NILP (val) | |
4508 | || NILP (Flocal_variable_p (Qbuffer_file_coding_system, Qnil))) | |
4509 | { | |
4510 | val = Qnil; | |
4511 | if (NILP (current_buffer->enable_multibyte_characters)) | |
4512 | force_raw_text = 1; | |
4513 | } | |
efdc16c9 | 4514 | |
7c82a4a9 SM |
4515 | if (NILP (val)) |
4516 | { | |
4517 | /* Check file-coding-system-alist. */ | |
4518 | Lisp_Object args[7], coding_systems; | |
4519 | ||
4520 | args[0] = Qwrite_region; args[1] = start; args[2] = end; | |
4521 | args[3] = filename; args[4] = append; args[5] = visit; | |
4522 | args[6] = lockname; | |
4523 | coding_systems = Ffind_operation_coding_system (7, args); | |
4524 | if (CONSP (coding_systems) && !NILP (XCDR (coding_systems))) | |
4525 | val = XCDR (coding_systems); | |
4526 | } | |
4527 | ||
c934586d | 4528 | if (NILP (val)) |
7c82a4a9 SM |
4529 | { |
4530 | /* If we still have not decided a coding system, use the | |
4531 | default value of buffer-file-coding-system. */ | |
4532 | val = current_buffer->buffer_file_coding_system; | |
4533 | using_default_coding = 1; | |
4534 | } | |
efdc16c9 | 4535 | |
db327c7e KH |
4536 | if (! NILP (val) && ! force_raw_text) |
4537 | { | |
4538 | Lisp_Object spec, attrs; | |
4539 | ||
4540 | CHECK_CODING_SYSTEM_GET_SPEC (val, spec); | |
4541 | attrs = AREF (spec, 0); | |
4542 | if (EQ (CODING_ATTR_TYPE (attrs), Qraw_text)) | |
4543 | force_raw_text = 1; | |
4544 | } | |
4545 | ||
7c82a4a9 SM |
4546 | if (!force_raw_text |
4547 | && !NILP (Ffboundp (Vselect_safe_coding_system_function))) | |
4548 | /* Confirm that VAL can surely encode the current region. */ | |
905a4276 PJ |
4549 | val = call5 (Vselect_safe_coding_system_function, |
4550 | start, end, val, Qnil, filename); | |
7c82a4a9 | 4551 | |
db327c7e KH |
4552 | /* If the decided coding-system doesn't specify end-of-line |
4553 | format, we use that of | |
4554 | `default-buffer-file-coding-system'. */ | |
c934586d KH |
4555 | if (! using_default_coding |
4556 | && ! NILP (buffer_defaults.buffer_file_coding_system)) | |
db327c7e KH |
4557 | val = (coding_inherit_eol_type |
4558 | (val, buffer_defaults.buffer_file_coding_system)); | |
7c82a4a9 | 4559 | |
db327c7e KH |
4560 | /* If we decide not to encode text, use `raw-text' or one of its |
4561 | subsidiaries. */ | |
7c82a4a9 | 4562 | if (force_raw_text) |
db327c7e | 4563 | val = raw_text_coding_system (val); |
7c82a4a9 SM |
4564 | } |
4565 | ||
75421805 | 4566 | val = coding_inherit_eol_type (val, eol_parent); |
c934586d | 4567 | setup_coding_system (val, coding); |
7c82a4a9 | 4568 | |
7c82a4a9 SM |
4569 | if (!STRINGP (start) && !NILP (current_buffer->selective_display)) |
4570 | coding->mode |= CODING_MODE_SELECTIVE_DISPLAY; | |
c934586d | 4571 | return val; |
7c82a4a9 SM |
4572 | } |
4573 | ||
de1d0127 | 4574 | DEFUN ("write-region", Fwrite_region, Swrite_region, 3, 7, |
8c1a1077 PJ |
4575 | "r\nFWrite region to file: \ni\ni\ni\np", |
4576 | doc: /* Write current region into specified file. | |
c2efea25 RS |
4577 | When called from a program, requires three arguments: |
4578 | START, END and FILENAME. START and END are normally buffer positions | |
4579 | specifying the part of the buffer to write. | |
4580 | If START is nil, that means to use the entire buffer contents. | |
4581 | If START is a string, then output that string to the file | |
4582 | instead of any buffer contents; END is ignored. | |
4583 | ||
8c1a1077 PJ |
4584 | Optional fourth argument APPEND if non-nil means |
4585 | append to existing file contents (if any). If it is an integer, | |
4586 | seek to that offset in the file before writing. | |
36e50520 | 4587 | Optional fifth argument VISIT, if t or a string, means |
8c1a1077 PJ |
4588 | set the last-save-file-modtime of buffer to this file's modtime |
4589 | and mark buffer not modified. | |
4590 | If VISIT is a string, it is a second file name; | |
4591 | the output goes to FILENAME, but the buffer is marked as visiting VISIT. | |
4592 | VISIT is also the file name to lock and unlock for clash detection. | |
4593 | If VISIT is neither t nor nil nor a string, | |
5f4e6aa9 | 4594 | that means do not display the \"Wrote file\" message. |
8c1a1077 PJ |
4595 | The optional sixth arg LOCKNAME, if non-nil, specifies the name to |
4596 | use for locking and unlocking, overriding FILENAME and VISIT. | |
4597 | The optional seventh arg MUSTBENEW, if non-nil, insists on a check | |
4598 | for an existing file with the same name. If MUSTBENEW is `excl', | |
4599 | that means to get an error if the file already exists; never overwrite. | |
4600 | If MUSTBENEW is neither nil nor `excl', that means ask for | |
4601 | confirmation before overwriting, but do go ahead and overwrite the file | |
4602 | if the user confirms. | |
8c1a1077 PJ |
4603 | |
4604 | This does code conversion according to the value of | |
4605 | `coding-system-for-write', `buffer-file-coding-system', or | |
4606 | `file-coding-system-alist', and sets the variable | |
aacd8ba1 GM |
4607 | `last-coding-system-used' to the coding system actually used. |
4608 | ||
4609 | This calls `write-region-annotate-functions' at the start, and | |
4610 | `write-region-post-annotation-function' at the end. */) | |
8c1a1077 | 4611 | (start, end, filename, append, visit, lockname, mustbenew) |
f7b4065f | 4612 | Lisp_Object start, end, filename, append, visit, lockname, mustbenew; |
570d7624 JB |
4613 | { |
4614 | register int desc; | |
4615 | int failure; | |
6bbd7a29 | 4616 | int save_errno = 0; |
19290c65 | 4617 | const unsigned char *fn; |
570d7624 | 4618 | struct stat st; |
aed13378 | 4619 | int count = SPECPDL_INDEX (); |
6fc6f94b | 4620 | int count1; |
3eac9910 | 4621 | Lisp_Object handler; |
4ad827c5 | 4622 | Lisp_Object visit_file; |
65b7d3e7 | 4623 | Lisp_Object annotations; |
b1d1b865 | 4624 | Lisp_Object encoded_filename; |
d3a67486 SM |
4625 | int visiting = (EQ (visit, Qt) || STRINGP (visit)); |
4626 | int quietly = !NILP (visit); | |
7204a979 | 4627 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5; |
6fc6f94b | 4628 | struct buffer *given_buffer; |
5e570b75 | 4629 | #ifdef DOS_NT |
fa228724 | 4630 | int buffer_file_type = O_BINARY; |
5e570b75 | 4631 | #endif /* DOS_NT */ |
6fdaa9a0 | 4632 | struct coding_system coding; |
570d7624 | 4633 | |
d3a67486 | 4634 | if (current_buffer->base_buffer && visiting) |
95385625 RS |
4635 | error ("Cannot do file visiting in an indirect buffer"); |
4636 | ||
561cb8e1 | 4637 | if (!NILP (start) && !STRINGP (start)) |
570d7624 JB |
4638 | validate_region (&start, &end); |
4639 | ||
95c1c901 | 4640 | visit_file = Qnil; |
59fac292 | 4641 | GCPRO5 (start, filename, visit, visit_file, lockname); |
b56567b5 | 4642 | |
570d7624 | 4643 | filename = Fexpand_file_name (filename, Qnil); |
de1d0127 | 4644 | |
236a12f2 | 4645 | if (!NILP (mustbenew) && !EQ (mustbenew, Qexcl)) |
b8b29dc9 | 4646 | barf_or_query_if_file_exists (filename, "overwrite", 1, 0, 1); |
de1d0127 | 4647 | |
561cb8e1 | 4648 | if (STRINGP (visit)) |
e5176bae | 4649 | visit_file = Fexpand_file_name (visit, Qnil); |
4ad827c5 RS |
4650 | else |
4651 | visit_file = filename; | |
4652 | ||
7204a979 RS |
4653 | if (NILP (lockname)) |
4654 | lockname = visit_file; | |
4655 | ||
65b7d3e7 RS |
4656 | annotations = Qnil; |
4657 | ||
32f4334d RS |
4658 | /* If the file name has special constructs in it, |
4659 | call the corresponding file handler. */ | |
49307295 | 4660 | handler = Ffind_file_name_handler (filename, Qwrite_region); |
b56ad927 | 4661 | /* If FILENAME has no handler, see if VISIT has one. */ |
93c30b5f | 4662 | if (NILP (handler) && STRINGP (visit)) |
199607e4 | 4663 | handler = Ffind_file_name_handler (visit, Qwrite_region); |
3eac9910 | 4664 | |
32f4334d RS |
4665 | if (!NILP (handler)) |
4666 | { | |
32f4334d | 4667 | Lisp_Object val; |
51cf6d37 RS |
4668 | val = call6 (handler, Qwrite_region, start, end, |
4669 | filename, append, visit); | |
32f4334d | 4670 | |
d6a3cc15 | 4671 | if (visiting) |
32f4334d | 4672 | { |
95385625 | 4673 | SAVE_MODIFF = MODIFF; |
090101cf | 4674 | XSETFASTINT (current_buffer->save_length, Z - BEG); |
3b7792ed | 4675 | current_buffer->filename = visit_file; |
32f4334d | 4676 | } |
09121adc | 4677 | UNGCPRO; |
32f4334d RS |
4678 | return val; |
4679 | } | |
4680 | ||
4a38de71 KH |
4681 | record_unwind_protect (save_restriction_restore, save_restriction_save ()); |
4682 | ||
561cb8e1 RS |
4683 | /* Special kludge to simplify auto-saving. */ |
4684 | if (NILP (start)) | |
4685 | { | |
6b3d752c SM |
4686 | /* Do it later, so write-region-annotate-function can work differently |
4687 | if we save "the buffer" vs "a region". | |
4688 | This is useful in tar-mode. --Stef | |
2acfd7ae | 4689 | XSETFASTINT (start, BEG); |
6b3d752c | 4690 | XSETFASTINT (end, Z); */ |
4a38de71 | 4691 | Fwiden (); |
561cb8e1 RS |
4692 | } |
4693 | ||
67fbc0cb CY |
4694 | record_unwind_protect (build_annotations_unwind, |
4695 | Vwrite_region_annotation_buffers); | |
4696 | Vwrite_region_annotation_buffers = Fcons (Fcurrent_buffer (), Qnil); | |
aed13378 | 4697 | count1 = SPECPDL_INDEX (); |
6fc6f94b RS |
4698 | |
4699 | given_buffer = current_buffer; | |
bf3428a1 RS |
4700 | |
4701 | if (!STRINGP (start)) | |
236a12f2 | 4702 | { |
bf3428a1 RS |
4703 | annotations = build_annotations (start, end); |
4704 | ||
4705 | if (current_buffer != given_buffer) | |
4706 | { | |
4707 | XSETFASTINT (start, BEGV); | |
4708 | XSETFASTINT (end, ZV); | |
4709 | } | |
236a12f2 SM |
4710 | } |
4711 | ||
6b3d752c SM |
4712 | if (NILP (start)) |
4713 | { | |
4714 | XSETFASTINT (start, BEGV); | |
4715 | XSETFASTINT (end, ZV); | |
4716 | } | |
4717 | ||
236a12f2 SM |
4718 | UNGCPRO; |
4719 | ||
4720 | GCPRO5 (start, filename, annotations, visit_file, lockname); | |
4721 | ||
59fac292 SM |
4722 | /* Decide the coding-system to encode the data with. |
4723 | We used to make this choice before calling build_annotations, but that | |
4724 | leads to problems when a write-annotate-function takes care of | |
4725 | unsavable chars (as was the case with X-Symbol). */ | |
c934586d KH |
4726 | Vlast_coding_system_used |
4727 | = choose_write_coding_system (start, end, filename, | |
4728 | append, visit, lockname, &coding); | |
d6a3cc15 | 4729 | |
570d7624 JB |
4730 | #ifdef CLASH_DETECTION |
4731 | if (!auto_saving) | |
67fbc0cb | 4732 | lock_file (lockname); |
570d7624 JB |
4733 | #endif /* CLASH_DETECTION */ |
4734 | ||
b1d1b865 RS |
4735 | encoded_filename = ENCODE_FILE (filename); |
4736 | ||
d5db4077 | 4737 | fn = SDATA (encoded_filename); |
570d7624 | 4738 | desc = -1; |
265a9e55 | 4739 | if (!NILP (append)) |
5e570b75 | 4740 | #ifdef DOS_NT |
68c45bf0 | 4741 | desc = emacs_open (fn, O_WRONLY | buffer_file_type, 0); |
5e570b75 | 4742 | #else /* not DOS_NT */ |
68c45bf0 | 4743 | desc = emacs_open (fn, O_WRONLY, 0); |
5e570b75 | 4744 | #endif /* not DOS_NT */ |
570d7624 | 4745 | |
b1d1b865 | 4746 | if (desc < 0 && (NILP (append) || errno == ENOENT)) |
5e570b75 | 4747 | #ifdef DOS_NT |
68c45bf0 | 4748 | desc = emacs_open (fn, |
95522746 GM |
4749 | O_WRONLY | O_CREAT | buffer_file_type |
4750 | | (EQ (mustbenew, Qexcl) ? O_EXCL : O_TRUNC), | |
68c45bf0 | 4751 | S_IREAD | S_IWRITE); |
5e570b75 | 4752 | #else /* not DOS_NT */ |
68c45bf0 | 4753 | desc = emacs_open (fn, O_WRONLY | O_TRUNC | O_CREAT |
7c752c80 | 4754 | | (EQ (mustbenew, Qexcl) ? O_EXCL : 0), |
68c45bf0 | 4755 | auto_saving ? auto_save_mode_bits : 0666); |
5e570b75 | 4756 | #endif /* not DOS_NT */ |
570d7624 JB |
4757 | |
4758 | if (desc < 0) | |
4759 | { | |
4760 | #ifdef CLASH_DETECTION | |
4761 | save_errno = errno; | |
7204a979 | 4762 | if (!auto_saving) unlock_file (lockname); |
570d7624 JB |
4763 | errno = save_errno; |
4764 | #endif /* CLASH_DETECTION */ | |
43fb7d9a | 4765 | UNGCPRO; |
570d7624 JB |
4766 | report_file_error ("Opening output file", Fcons (filename, Qnil)); |
4767 | } | |
4768 | ||
4769 | record_unwind_protect (close_file_unwind, make_number (desc)); | |
4770 | ||
c1c4693e | 4771 | if (!NILP (append) && !NILP (Ffile_regular_p (filename))) |
43fb7d9a DL |
4772 | { |
4773 | long ret; | |
efdc16c9 | 4774 | |
43fb7d9a DL |
4775 | if (NUMBERP (append)) |
4776 | ret = lseek (desc, XINT (append), 1); | |
4777 | else | |
4778 | ret = lseek (desc, 0, 2); | |
4779 | if (ret < 0) | |
4780 | { | |
570d7624 | 4781 | #ifdef CLASH_DETECTION |
43fb7d9a | 4782 | if (!auto_saving) unlock_file (lockname); |
570d7624 | 4783 | #endif /* CLASH_DETECTION */ |
43fb7d9a DL |
4784 | UNGCPRO; |
4785 | report_file_error ("Lseek error", Fcons (filename, Qnil)); | |
4786 | } | |
4787 | } | |
efdc16c9 | 4788 | |
43fb7d9a | 4789 | UNGCPRO; |
570d7624 | 4790 | |
570d7624 JB |
4791 | failure = 0; |
4792 | immediate_quit = 1; | |
4793 | ||
561cb8e1 | 4794 | if (STRINGP (start)) |
570d7624 | 4795 | { |
d5db4077 | 4796 | failure = 0 > a_write (desc, start, 0, SCHARS (start), |
ce51c54c | 4797 | &annotations, &coding); |
570d7624 JB |
4798 | save_errno = errno; |
4799 | } | |
4800 | else if (XINT (start) != XINT (end)) | |
4801 | { | |
db327c7e KH |
4802 | failure = 0 > a_write (desc, Qnil, |
4803 | XINT (start), XINT (end) - XINT (start), | |
4804 | &annotations, &coding); | |
4805 | save_errno = errno; | |
69f6e679 RS |
4806 | } |
4807 | else | |
4808 | { | |
4809 | /* If file was empty, still need to write the annotations */ | |
c8a6d68a | 4810 | coding.mode |= CODING_MODE_LAST_BLOCK; |
ce51c54c | 4811 | failure = 0 > a_write (desc, Qnil, XINT (end), 0, &annotations, &coding); |
6fdaa9a0 KH |
4812 | save_errno = errno; |
4813 | } | |
4814 | ||
c8a6d68a KH |
4815 | if (CODING_REQUIRE_FLUSHING (&coding) |
4816 | && !(coding.mode & CODING_MODE_LAST_BLOCK) | |
1354debd | 4817 | && ! failure) |
6fdaa9a0 KH |
4818 | { |
4819 | /* We have to flush out a data. */ | |
c8a6d68a | 4820 | coding.mode |= CODING_MODE_LAST_BLOCK; |
db327c7e | 4821 | failure = 0 > e_write (desc, Qnil, 1, 1, &coding); |
69f6e679 | 4822 | save_errno = errno; |
570d7624 JB |
4823 | } |
4824 | ||
4825 | immediate_quit = 0; | |
4826 | ||
6e23c83e | 4827 | #ifdef HAVE_FSYNC |
570d7624 JB |
4828 | /* Note fsync appears to change the modtime on BSD4.2 (both vax and sun). |
4829 | Disk full in NFS may be reported here. */ | |
1daffa1c RS |
4830 | /* mib says that closing the file will try to write as fast as NFS can do |
4831 | it, and that means the fsync here is not crucial for autosave files. */ | |
ccf61795 | 4832 | if (!auto_saving && !write_region_inhibit_fsync && fsync (desc) < 0) |
cb33c142 | 4833 | { |
6cff77fd AS |
4834 | /* If fsync fails with EINTR, don't treat that as serious. Also |
4835 | ignore EINVAL which happens when fsync is not supported on this | |
4836 | file. */ | |
4837 | if (errno != EINTR && errno != EINVAL) | |
cb33c142 KH |
4838 | failure = 1, save_errno = errno; |
4839 | } | |
570d7624 JB |
4840 | #endif |
4841 | ||
570d7624 | 4842 | /* NFS can report a write failure now. */ |
68c45bf0 | 4843 | if (emacs_close (desc) < 0) |
570d7624 JB |
4844 | failure = 1, save_errno = errno; |
4845 | ||
570d7624 | 4846 | stat (fn, &st); |
67fbc0cb | 4847 | |
6fc6f94b RS |
4848 | /* Discard the unwind protect for close_file_unwind. */ |
4849 | specpdl_ptr = specpdl + count1; | |
67fbc0cb CY |
4850 | |
4851 | /* Call write-region-post-annotation-function. */ | |
294fa707 | 4852 | while (CONSP (Vwrite_region_annotation_buffers)) |
67fbc0cb CY |
4853 | { |
4854 | Lisp_Object buf = XCAR (Vwrite_region_annotation_buffers); | |
4855 | if (!NILP (Fbuffer_live_p (buf))) | |
4856 | { | |
4857 | Fset_buffer (buf); | |
4858 | if (FUNCTIONP (Vwrite_region_post_annotation_function)) | |
4859 | call0 (Vwrite_region_post_annotation_function); | |
4860 | } | |
4861 | Vwrite_region_annotation_buffers | |
4862 | = XCDR (Vwrite_region_annotation_buffers); | |
4863 | } | |
4864 | ||
4865 | unbind_to (count, Qnil); | |
570d7624 JB |
4866 | |
4867 | #ifdef CLASH_DETECTION | |
4868 | if (!auto_saving) | |
7204a979 | 4869 | unlock_file (lockname); |
570d7624 JB |
4870 | #endif /* CLASH_DETECTION */ |
4871 | ||
4872 | /* Do this before reporting IO error | |
4873 | to avoid a "file has changed on disk" warning on | |
4874 | next attempt to save. */ | |
d6a3cc15 | 4875 | if (visiting) |
58b963f7 SM |
4876 | { |
4877 | current_buffer->modtime = st.st_mtime; | |
4878 | current_buffer->modtime_size = st.st_size; | |
4879 | } | |
570d7624 JB |
4880 | |
4881 | if (failure) | |
d5db4077 | 4882 | error ("IO error writing %s: %s", SDATA (filename), |
68c45bf0 | 4883 | emacs_strerror (save_errno)); |
570d7624 | 4884 | |
d6a3cc15 | 4885 | if (visiting) |
570d7624 | 4886 | { |
95385625 | 4887 | SAVE_MODIFF = MODIFF; |
090101cf | 4888 | XSETFASTINT (current_buffer->save_length, Z - BEG); |
3b7792ed | 4889 | current_buffer->filename = visit_file; |
f4226e89 | 4890 | update_mode_lines++; |
570d7624 | 4891 | } |
d6a3cc15 | 4892 | else if (quietly) |
6b61353c KH |
4893 | { |
4894 | if (auto_saving | |
4895 | && ! NILP (Fstring_equal (current_buffer->filename, | |
4896 | current_buffer->auto_save_file_name))) | |
4897 | SAVE_MODIFF = MODIFF; | |
4898 | ||
4899 | return Qnil; | |
4900 | } | |
570d7624 JB |
4901 | |
4902 | if (!auto_saving) | |
6b61353c | 4903 | message_with_string ((INTEGERP (append) |
0c328a0e RS |
4904 | ? "Updated %s" |
4905 | : ! NILP (append) | |
4906 | ? "Added to %s" | |
4907 | : "Wrote %s"), | |
4908 | visit_file, 1); | |
570d7624 JB |
4909 | |
4910 | return Qnil; | |
4911 | } | |
ec7adf26 | 4912 | \f |
d6a3cc15 RS |
4913 | Lisp_Object merge (); |
4914 | ||
4915 | DEFUN ("car-less-than-car", Fcar_less_than_car, Scar_less_than_car, 2, 2, 0, | |
8c1a1077 PJ |
4916 | doc: /* Return t if (car A) is numerically less than (car B). */) |
4917 | (a, b) | |
d6a3cc15 RS |
4918 | Lisp_Object a, b; |
4919 | { | |
4920 | return Flss (Fcar (a), Fcar (b)); | |
4921 | } | |
4922 | ||
4923 | /* Build the complete list of annotations appropriate for writing out | |
4924 | the text between START and END, by calling all the functions in | |
6fc6f94b RS |
4925 | write-region-annotate-functions and merging the lists they return. |
4926 | If one of these functions switches to a different buffer, we assume | |
4927 | that buffer contains altered text. Therefore, the caller must | |
4928 | make sure to restore the current buffer in all cases, | |
4929 | as save-excursion would do. */ | |
d6a3cc15 RS |
4930 | |
4931 | static Lisp_Object | |
236a12f2 SM |
4932 | build_annotations (start, end) |
4933 | Lisp_Object start, end; | |
d6a3cc15 RS |
4934 | { |
4935 | Lisp_Object annotations; | |
4936 | Lisp_Object p, res; | |
4937 | struct gcpro gcpro1, gcpro2; | |
0a20b684 | 4938 | Lisp_Object original_buffer; |
bd235610 | 4939 | int i, used_global = 0; |
0a20b684 RS |
4940 | |
4941 | XSETBUFFER (original_buffer, current_buffer); | |
d6a3cc15 RS |
4942 | |
4943 | annotations = Qnil; | |
4944 | p = Vwrite_region_annotate_functions; | |
4945 | GCPRO2 (annotations, p); | |
28c3eb5a | 4946 | while (CONSP (p)) |
d6a3cc15 | 4947 | { |
6fc6f94b | 4948 | struct buffer *given_buffer = current_buffer; |
bd235610 SM |
4949 | if (EQ (Qt, XCAR (p)) && !used_global) |
4950 | { /* Use the global value of the hook. */ | |
4951 | Lisp_Object arg[2]; | |
4952 | used_global = 1; | |
4953 | arg[0] = Fdefault_value (Qwrite_region_annotate_functions); | |
4954 | arg[1] = XCDR (p); | |
4955 | p = Fappend (2, arg); | |
4956 | continue; | |
4957 | } | |
6fc6f94b | 4958 | Vwrite_region_annotations_so_far = annotations; |
28c3eb5a | 4959 | res = call2 (XCAR (p), start, end); |
6fc6f94b RS |
4960 | /* If the function makes a different buffer current, |
4961 | assume that means this buffer contains altered text to be output. | |
4962 | Reset START and END from the buffer bounds | |
4963 | and discard all previous annotations because they should have | |
4964 | been dealt with by this function. */ | |
4965 | if (current_buffer != given_buffer) | |
4966 | { | |
67fbc0cb CY |
4967 | Vwrite_region_annotation_buffers |
4968 | = Fcons (Fcurrent_buffer (), | |
4969 | Vwrite_region_annotation_buffers); | |
3cf29f61 RS |
4970 | XSETFASTINT (start, BEGV); |
4971 | XSETFASTINT (end, ZV); | |
6fc6f94b RS |
4972 | annotations = Qnil; |
4973 | } | |
d6a3cc15 RS |
4974 | Flength (res); /* Check basic validity of return value */ |
4975 | annotations = merge (annotations, res, Qcar_less_than_car); | |
28c3eb5a | 4976 | p = XCDR (p); |
d6a3cc15 | 4977 | } |
0d420e88 BG |
4978 | |
4979 | /* Now do the same for annotation functions implied by the file-format */ | |
f844ba4e LT |
4980 | if (auto_saving && (!EQ (current_buffer->auto_save_file_format, Qt))) |
4981 | p = current_buffer->auto_save_file_format; | |
0d420e88 BG |
4982 | else |
4983 | p = current_buffer->file_format; | |
28c3eb5a | 4984 | for (i = 0; CONSP (p); p = XCDR (p), ++i) |
0d420e88 BG |
4985 | { |
4986 | struct buffer *given_buffer = current_buffer; | |
efdc16c9 | 4987 | |
0d420e88 | 4988 | Vwrite_region_annotations_so_far = annotations; |
532ed661 GM |
4989 | |
4990 | /* Value is either a list of annotations or nil if the function | |
4991 | has written annotations to a temporary buffer, which is now | |
4992 | current. */ | |
28c3eb5a | 4993 | res = call5 (Qformat_annotate_function, XCAR (p), start, end, |
532ed661 | 4994 | original_buffer, make_number (i)); |
0d420e88 BG |
4995 | if (current_buffer != given_buffer) |
4996 | { | |
3cf29f61 RS |
4997 | XSETFASTINT (start, BEGV); |
4998 | XSETFASTINT (end, ZV); | |
0d420e88 BG |
4999 | annotations = Qnil; |
5000 | } | |
efdc16c9 | 5001 | |
532ed661 GM |
5002 | if (CONSP (res)) |
5003 | annotations = merge (annotations, res, Qcar_less_than_car); | |
0d420e88 | 5004 | } |
6fdaa9a0 | 5005 | |
236a12f2 SM |
5006 | UNGCPRO; |
5007 | return annotations; | |
5008 | } | |
5009 | ||
ec7adf26 | 5010 | \f |
ce51c54c KH |
5011 | /* Write to descriptor DESC the NCHARS chars starting at POS of STRING. |
5012 | If STRING is nil, POS is the character position in the current buffer. | |
d6a3cc15 | 5013 | Intersperse with them the annotations from *ANNOT |
ce51c54c | 5014 | which fall within the range of POS to POS + NCHARS, |
d6a3cc15 RS |
5015 | each at its appropriate position. |
5016 | ||
ec7adf26 RS |
5017 | We modify *ANNOT by discarding elements as we use them up. |
5018 | ||
d6a3cc15 RS |
5019 | The return value is negative in case of system call failure. */ |
5020 | ||
ec7adf26 | 5021 | static int |
ce51c54c | 5022 | a_write (desc, string, pos, nchars, annot, coding) |
d6a3cc15 | 5023 | int desc; |
ce51c54c KH |
5024 | Lisp_Object string; |
5025 | register int nchars; | |
5026 | int pos; | |
d6a3cc15 | 5027 | Lisp_Object *annot; |
6fdaa9a0 | 5028 | struct coding_system *coding; |
d6a3cc15 RS |
5029 | { |
5030 | Lisp_Object tem; | |
5031 | int nextpos; | |
ce51c54c | 5032 | int lastpos = pos + nchars; |
d6a3cc15 | 5033 | |
eb15aa18 | 5034 | while (NILP (*annot) || CONSP (*annot)) |
d6a3cc15 RS |
5035 | { |
5036 | tem = Fcar_safe (Fcar (*annot)); | |
ce51c54c | 5037 | nextpos = pos - 1; |
ec7adf26 | 5038 | if (INTEGERP (tem)) |
ce51c54c | 5039 | nextpos = XFASTINT (tem); |
ec7adf26 RS |
5040 | |
5041 | /* If there are no more annotations in this range, | |
5042 | output the rest of the range all at once. */ | |
ce51c54c KH |
5043 | if (! (nextpos >= pos && nextpos <= lastpos)) |
5044 | return e_write (desc, string, pos, lastpos, coding); | |
ec7adf26 RS |
5045 | |
5046 | /* Output buffer text up to the next annotation's position. */ | |
ce51c54c | 5047 | if (nextpos > pos) |
d6a3cc15 | 5048 | { |
055a28c9 | 5049 | if (0 > e_write (desc, string, pos, nextpos, coding)) |
d6a3cc15 | 5050 | return -1; |
ce51c54c | 5051 | pos = nextpos; |
d6a3cc15 | 5052 | } |
ec7adf26 | 5053 | /* Output the annotation. */ |
d6a3cc15 RS |
5054 | tem = Fcdr (Fcar (*annot)); |
5055 | if (STRINGP (tem)) | |
5056 | { | |
d5db4077 | 5057 | if (0 > e_write (desc, tem, 0, SCHARS (tem), coding)) |
d6a3cc15 RS |
5058 | return -1; |
5059 | } | |
5060 | *annot = Fcdr (*annot); | |
5061 | } | |
dfcf069d | 5062 | return 0; |
d6a3cc15 RS |
5063 | } |
5064 | ||
6fdaa9a0 | 5065 | |
ce51c54c KH |
5066 | /* Write text in the range START and END into descriptor DESC, |
5067 | encoding them with coding system CODING. If STRING is nil, START | |
5068 | and END are character positions of the current buffer, else they | |
5069 | are indexes to the string STRING. */ | |
ec7adf26 RS |
5070 | |
5071 | static int | |
ce51c54c | 5072 | e_write (desc, string, start, end, coding) |
570d7624 | 5073 | int desc; |
ce51c54c KH |
5074 | Lisp_Object string; |
5075 | int start, end; | |
6fdaa9a0 | 5076 | struct coding_system *coding; |
570d7624 | 5077 | { |
ce51c54c KH |
5078 | if (STRINGP (string)) |
5079 | { | |
db327c7e | 5080 | start = 0; |
8f924df7 | 5081 | end = SCHARS (string); |
ce51c54c | 5082 | } |
570d7624 | 5083 | |
6fdaa9a0 KH |
5084 | /* We used to have a code for handling selective display here. But, |
5085 | now it is handled within encode_coding. */ | |
01ca97a2 KH |
5086 | |
5087 | while (start < end) | |
570d7624 | 5088 | { |
01ca97a2 | 5089 | if (STRINGP (string)) |
6ad568dd | 5090 | { |
01ca97a2 KH |
5091 | coding->src_multibyte = SCHARS (string) < SBYTES (string); |
5092 | if (CODING_REQUIRE_ENCODING (coding)) | |
5093 | { | |
5094 | encode_coding_object (coding, string, | |
5095 | start, string_char_to_byte (string, start), | |
5096 | end, string_char_to_byte (string, end), Qt); | |
5097 | } | |
5098 | else | |
5099 | { | |
5100 | coding->dst_object = string; | |
5101 | coding->consumed_char = SCHARS (string); | |
5102 | coding->produced = SBYTES (string); | |
5103 | } | |
6ad568dd | 5104 | } |
db327c7e | 5105 | else |
6ad568dd | 5106 | { |
01ca97a2 KH |
5107 | int start_byte = CHAR_TO_BYTE (start); |
5108 | int end_byte = CHAR_TO_BYTE (end); | |
b4132433 | 5109 | |
01ca97a2 KH |
5110 | coding->src_multibyte = (end - start) < (end_byte - start_byte); |
5111 | if (CODING_REQUIRE_ENCODING (coding)) | |
5112 | { | |
5113 | encode_coding_object (coding, Fcurrent_buffer (), | |
5114 | start, start_byte, end, end_byte, Qt); | |
5115 | } | |
5116 | else | |
5117 | { | |
5118 | coding->dst_object = Qnil; | |
5119 | coding->dst_pos_byte = start_byte; | |
5120 | if (start >= GPT || end <= GPT) | |
5121 | { | |
5122 | coding->consumed_char = end - start; | |
5123 | coding->produced = end_byte - start_byte; | |
5124 | } | |
5125 | else | |
5126 | { | |
5127 | coding->consumed_char = GPT - start; | |
5128 | coding->produced = GPT_BYTE - start_byte; | |
5129 | } | |
5130 | } | |
c185d744 | 5131 | } |
01ca97a2 KH |
5132 | |
5133 | if (coding->produced > 0) | |
c185d744 | 5134 | { |
01ca97a2 KH |
5135 | coding->produced -= |
5136 | emacs_write (desc, | |
5137 | STRINGP (coding->dst_object) | |
5138 | ? SDATA (coding->dst_object) | |
5139 | : BYTE_POS_ADDR (coding->dst_pos_byte), | |
5140 | coding->produced); | |
5141 | ||
5142 | if (coding->produced) | |
5143 | return -1; | |
570d7624 | 5144 | } |
01ca97a2 | 5145 | start += coding->consumed_char; |
c185d744 KH |
5146 | } |
5147 | ||
5148 | return 0; | |
570d7624 | 5149 | } |
ec7adf26 | 5150 | \f |
570d7624 | 5151 | DEFUN ("verify-visited-file-modtime", Fverify_visited_file_modtime, |
8c1a1077 PJ |
5152 | Sverify_visited_file_modtime, 1, 1, 0, |
5153 | doc: /* Return t if last mod time of BUF's visited file matches what BUF records. | |
6b61353c KH |
5154 | This means that the file has not been changed since it was visited or saved. |
5155 | See Info node `(elisp)Modification Time' for more details. */) | |
8c1a1077 | 5156 | (buf) |
570d7624 JB |
5157 | Lisp_Object buf; |
5158 | { | |
5159 | struct buffer *b; | |
5160 | struct stat st; | |
32f4334d | 5161 | Lisp_Object handler; |
b1d1b865 | 5162 | Lisp_Object filename; |
570d7624 | 5163 | |
b7826503 | 5164 | CHECK_BUFFER (buf); |
570d7624 JB |
5165 | b = XBUFFER (buf); |
5166 | ||
93c30b5f | 5167 | if (!STRINGP (b->filename)) return Qt; |
570d7624 JB |
5168 | if (b->modtime == 0) return Qt; |
5169 | ||
32f4334d RS |
5170 | /* If the file name has special constructs in it, |
5171 | call the corresponding file handler. */ | |
49307295 KH |
5172 | handler = Ffind_file_name_handler (b->filename, |
5173 | Qverify_visited_file_modtime); | |
32f4334d | 5174 | if (!NILP (handler)) |
09121adc | 5175 | return call2 (handler, Qverify_visited_file_modtime, buf); |
32f4334d | 5176 | |
b1d1b865 RS |
5177 | filename = ENCODE_FILE (b->filename); |
5178 | ||
d5db4077 | 5179 | if (stat (SDATA (filename), &st) < 0) |
570d7624 JB |
5180 | { |
5181 | /* If the file doesn't exist now and didn't exist before, | |
5182 | we say that it isn't modified, provided the error is a tame one. */ | |
5183 | if (errno == ENOENT || errno == EACCES || errno == ENOTDIR) | |
5184 | st.st_mtime = -1; | |
5185 | else | |
5186 | st.st_mtime = 0; | |
5187 | } | |
58b963f7 SM |
5188 | if ((st.st_mtime == b->modtime |
5189 | /* If both are positive, accept them if they are off by one second. */ | |
5190 | || (st.st_mtime > 0 && b->modtime > 0 | |
5191 | && (st.st_mtime == b->modtime + 1 | |
5192 | || st.st_mtime == b->modtime - 1))) | |
5193 | && (st.st_size == b->modtime_size | |
5194 | || b->modtime_size < 0)) | |
570d7624 JB |
5195 | return Qt; |
5196 | return Qnil; | |
5197 | } | |
5198 | ||
5199 | DEFUN ("clear-visited-file-modtime", Fclear_visited_file_modtime, | |
8c1a1077 PJ |
5200 | Sclear_visited_file_modtime, 0, 0, 0, |
5201 | doc: /* Clear out records of last mod time of visited file. | |
5202 | Next attempt to save will certainly not complain of a discrepancy. */) | |
5203 | () | |
570d7624 JB |
5204 | { |
5205 | current_buffer->modtime = 0; | |
58b963f7 | 5206 | current_buffer->modtime_size = -1; |
570d7624 JB |
5207 | return Qnil; |
5208 | } | |
5209 | ||
f5d5eccf | 5210 | DEFUN ("visited-file-modtime", Fvisited_file_modtime, |
8c1a1077 PJ |
5211 | Svisited_file_modtime, 0, 0, 0, |
5212 | doc: /* Return the current buffer's recorded visited file modification time. | |
e5fcddc8 | 5213 | The value is a list of the form (HIGH LOW), like the time values |
6b61353c KH |
5214 | that `file-attributes' returns. If the current buffer has no recorded |
5215 | file modification time, this function returns 0. | |
5216 | See Info node `(elisp)Modification Time' for more details. */) | |
8c1a1077 | 5217 | () |
f5d5eccf | 5218 | { |
73ff9d42 RS |
5219 | if (! current_buffer->modtime) |
5220 | return make_number (0); | |
5221 | return make_time ((time_t) current_buffer->modtime); | |
f5d5eccf RS |
5222 | } |
5223 | ||
570d7624 | 5224 | DEFUN ("set-visited-file-modtime", Fset_visited_file_modtime, |
8c1a1077 PJ |
5225 | Sset_visited_file_modtime, 0, 1, 0, |
5226 | doc: /* Update buffer's recorded modification time from the visited file's time. | |
5227 | Useful if the buffer was not read from the file normally | |
5228 | or if the file itself has been changed for some known benign reason. | |
5229 | An argument specifies the modification time value to use | |
5230 | \(instead of that of the visited file), in the form of a list | |
5231 | \(HIGH . LOW) or (HIGH LOW). */) | |
5232 | (time_list) | |
f5d5eccf | 5233 | Lisp_Object time_list; |
570d7624 | 5234 | { |
f5d5eccf | 5235 | if (!NILP (time_list)) |
58b963f7 SM |
5236 | { |
5237 | current_buffer->modtime = cons_to_long (time_list); | |
5238 | current_buffer->modtime_size = -1; | |
5239 | } | |
f5d5eccf RS |
5240 | else |
5241 | { | |
5242 | register Lisp_Object filename; | |
5243 | struct stat st; | |
5244 | Lisp_Object handler; | |
570d7624 | 5245 | |
f5d5eccf | 5246 | filename = Fexpand_file_name (current_buffer->filename, Qnil); |
32f4334d | 5247 | |
f5d5eccf RS |
5248 | /* If the file name has special constructs in it, |
5249 | call the corresponding file handler. */ | |
49307295 | 5250 | handler = Ffind_file_name_handler (filename, Qset_visited_file_modtime); |
f5d5eccf | 5251 | if (!NILP (handler)) |
caf3c431 | 5252 | /* The handler can find the file name the same way we did. */ |
76c881b0 | 5253 | return call2 (handler, Qset_visited_file_modtime, Qnil); |
b1d1b865 RS |
5254 | |
5255 | filename = ENCODE_FILE (filename); | |
5256 | ||
d5db4077 | 5257 | if (stat (SDATA (filename), &st) >= 0) |
58b963f7 SM |
5258 | { |
5259 | current_buffer->modtime = st.st_mtime; | |
5260 | current_buffer->modtime_size = st.st_size; | |
5261 | } | |
f5d5eccf | 5262 | } |
570d7624 JB |
5263 | |
5264 | return Qnil; | |
5265 | } | |
5266 | \f | |
5267 | Lisp_Object | |
d7f31e22 GM |
5268 | auto_save_error (error) |
5269 | Lisp_Object error; | |
570d7624 | 5270 | { |
d7f31e22 GM |
5271 | Lisp_Object args[3], msg; |
5272 | int i, nbytes; | |
5273 | struct gcpro gcpro1; | |
dfc22242 KS |
5274 | char *msgbuf; |
5275 | USE_SAFE_ALLOCA; | |
efdc16c9 | 5276 | |
ca730bf0 CY |
5277 | auto_save_error_occurred = 1; |
5278 | ||
385ed61f | 5279 | ring_bell (XFRAME (selected_frame)); |
efdc16c9 | 5280 | |
d7f31e22 GM |
5281 | args[0] = build_string ("Auto-saving %s: %s"); |
5282 | args[1] = current_buffer->name; | |
5283 | args[2] = Ferror_message_string (error); | |
5284 | msg = Fformat (3, args); | |
5285 | GCPRO1 (msg); | |
d5db4077 | 5286 | nbytes = SBYTES (msg); |
dfc22242 KS |
5287 | SAFE_ALLOCA (msgbuf, char *, nbytes); |
5288 | bcopy (SDATA (msg), msgbuf, nbytes); | |
d7f31e22 GM |
5289 | |
5290 | for (i = 0; i < 3; ++i) | |
5291 | { | |
5292 | if (i == 0) | |
dfc22242 | 5293 | message2 (msgbuf, nbytes, STRING_MULTIBYTE (msg)); |
d7f31e22 | 5294 | else |
dfc22242 | 5295 | message2_nolog (msgbuf, nbytes, STRING_MULTIBYTE (msg)); |
d7f31e22 GM |
5296 | Fsleep_for (make_number (1), Qnil); |
5297 | } | |
5298 | ||
e01f7773 | 5299 | SAFE_FREE (); |
d7f31e22 | 5300 | UNGCPRO; |
570d7624 JB |
5301 | return Qnil; |
5302 | } | |
5303 | ||
5304 | Lisp_Object | |
5305 | auto_save_1 () | |
5306 | { | |
570d7624 | 5307 | struct stat st; |
d4a42098 KS |
5308 | Lisp_Object modes; |
5309 | ||
5310 | auto_save_mode_bits = 0666; | |
570d7624 JB |
5311 | |
5312 | /* Get visited file's mode to become the auto save file's mode. */ | |
d4a42098 KS |
5313 | if (! NILP (current_buffer->filename)) |
5314 | { | |
5315 | if (stat (SDATA (current_buffer->filename), &st) >= 0) | |
5316 | /* But make sure we can overwrite it later! */ | |
5317 | auto_save_mode_bits = st.st_mode | 0600; | |
5318 | else if ((modes = Ffile_modes (current_buffer->filename), | |
5319 | INTEGERP (modes))) | |
5320 | /* Remote files don't cooperate with stat. */ | |
5321 | auto_save_mode_bits = XINT (modes) | 0600; | |
5322 | } | |
570d7624 JB |
5323 | |
5324 | return | |
699b53bc CY |
5325 | Fwrite_region (Qnil, Qnil, current_buffer->auto_save_file_name, Qnil, |
5326 | NILP (Vauto_save_visited_file_name) ? Qlambda : Qt, | |
5327 | Qnil, Qnil); | |
570d7624 JB |
5328 | } |
5329 | ||
e54d3b5d | 5330 | static Lisp_Object |
fff7e982 KS |
5331 | do_auto_save_unwind (arg) /* used as unwind-protect function */ |
5332 | Lisp_Object arg; | |
e54d3b5d | 5333 | { |
fff7e982 | 5334 | FILE *stream = (FILE *) XSAVE_VALUE (arg)->pointer; |
3be3c08e | 5335 | auto_saving = 0; |
fff7e982 | 5336 | if (stream != NULL) |
aab12958 YM |
5337 | { |
5338 | BLOCK_INPUT; | |
5339 | fclose (stream); | |
5340 | UNBLOCK_INPUT; | |
5341 | } | |
e54d3b5d RS |
5342 | return Qnil; |
5343 | } | |
5344 | ||
a8c828be RS |
5345 | static Lisp_Object |
5346 | do_auto_save_unwind_1 (value) /* used as unwind-protect function */ | |
5347 | Lisp_Object value; | |
5348 | { | |
5349 | minibuffer_auto_raise = XINT (value); | |
5350 | return Qnil; | |
5351 | } | |
5352 | ||
5794dd61 RS |
5353 | static Lisp_Object |
5354 | do_auto_save_make_dir (dir) | |
5355 | Lisp_Object dir; | |
5356 | { | |
26816cbf SG |
5357 | Lisp_Object mode; |
5358 | ||
5359 | call2 (Qmake_directory, dir, Qt); | |
5360 | XSETFASTINT (mode, 0700); | |
5361 | return Fset_file_modes (dir, mode); | |
5794dd61 RS |
5362 | } |
5363 | ||
5364 | static Lisp_Object | |
5365 | do_auto_save_eh (ignore) | |
5366 | Lisp_Object ignore; | |
5367 | { | |
5368 | return Qnil; | |
5369 | } | |
5370 | ||
570d7624 | 5371 | DEFUN ("do-auto-save", Fdo_auto_save, Sdo_auto_save, 0, 2, "", |
8c1a1077 PJ |
5372 | doc: /* Auto-save all buffers that need it. |
5373 | This is all buffers that have auto-saving enabled | |
5374 | and are changed since last auto-saved. | |
5375 | Auto-saving writes the buffer into a file | |
5376 | so that your editing is not lost if the system crashes. | |
5377 | This file is not the file you visited; that changes only when you save. | |
5378 | Normally we run the normal hook `auto-save-hook' before saving. | |
5379 | ||
5380 | A non-nil NO-MESSAGE argument means do not print any message if successful. | |
5381 | A non-nil CURRENT-ONLY argument means save only current buffer. */) | |
5382 | (no_message, current_only) | |
17857782 | 5383 | Lisp_Object no_message, current_only; |
570d7624 JB |
5384 | { |
5385 | struct buffer *old = current_buffer, *b; | |
5386 | Lisp_Object tail, buf; | |
5387 | int auto_saved = 0; | |
f14b1c68 | 5388 | int do_handled_files; |
ff4c9993 | 5389 | Lisp_Object oquit; |
fff7e982 | 5390 | FILE *stream = NULL; |
aed13378 | 5391 | int count = SPECPDL_INDEX (); |
a8c828be | 5392 | int orig_minibuffer_auto_raise = minibuffer_auto_raise; |
5794dd61 | 5393 | int old_message_p = 0; |
d57563b6 | 5394 | struct gcpro gcpro1, gcpro2; |
38da540d RS |
5395 | |
5396 | if (max_specpdl_size < specpdl_size + 40) | |
5397 | max_specpdl_size = specpdl_size + 40; | |
5398 | ||
5399 | if (minibuf_level) | |
5400 | no_message = Qt; | |
5401 | ||
5794dd61 RS |
5402 | if (NILP (no_message)) |
5403 | { | |
5404 | old_message_p = push_message (); | |
5405 | record_unwind_protect (pop_message_unwind, Qnil); | |
5406 | } | |
efdc16c9 | 5407 | |
ff4c9993 RS |
5408 | /* Ordinarily don't quit within this function, |
5409 | but don't make it impossible to quit (in case we get hung in I/O). */ | |
5410 | oquit = Vquit_flag; | |
5411 | Vquit_flag = Qnil; | |
570d7624 JB |
5412 | |
5413 | /* No GCPRO needed, because (when it matters) all Lisp_Object variables | |
5414 | point to non-strings reached from Vbuffer_alist. */ | |
5415 | ||
265a9e55 | 5416 | if (!NILP (Vrun_hooks)) |
570d7624 JB |
5417 | call1 (Vrun_hooks, intern ("auto-save-hook")); |
5418 | ||
e54d3b5d RS |
5419 | if (STRINGP (Vauto_save_list_file_name)) |
5420 | { | |
0894672f | 5421 | Lisp_Object listfile; |
efdc16c9 | 5422 | |
258fd2cb | 5423 | listfile = Fexpand_file_name (Vauto_save_list_file_name, Qnil); |
0894672f GM |
5424 | |
5425 | /* Don't try to create the directory when shutting down Emacs, | |
5426 | because creating the directory might signal an error, and | |
5427 | that would leave Emacs in a strange state. */ | |
5428 | if (!NILP (Vrun_hooks)) | |
5429 | { | |
5430 | Lisp_Object dir; | |
d57563b6 RS |
5431 | dir = Qnil; |
5432 | GCPRO2 (dir, listfile); | |
0894672f GM |
5433 | dir = Ffile_name_directory (listfile); |
5434 | if (NILP (Ffile_directory_p (dir))) | |
5794dd61 RS |
5435 | internal_condition_case_1 (do_auto_save_make_dir, |
5436 | dir, Fcons (Fcons (Qfile_error, Qnil), Qnil), | |
5437 | do_auto_save_eh); | |
d57563b6 | 5438 | UNGCPRO; |
0894672f | 5439 | } |
efdc16c9 | 5440 | |
d5db4077 | 5441 | stream = fopen (SDATA (listfile), "w"); |
1b335d29 | 5442 | } |
199607e4 | 5443 | |
fff7e982 KS |
5444 | record_unwind_protect (do_auto_save_unwind, |
5445 | make_save_value (stream, 0)); | |
a8c828be RS |
5446 | record_unwind_protect (do_auto_save_unwind_1, |
5447 | make_number (minibuffer_auto_raise)); | |
5448 | minibuffer_auto_raise = 0; | |
3be3c08e | 5449 | auto_saving = 1; |
ca730bf0 | 5450 | auto_save_error_occurred = 0; |
3be3c08e | 5451 | |
6b61353c KH |
5452 | /* On first pass, save all files that don't have handlers. |
5453 | On second pass, save all files that do have handlers. | |
5454 | ||
5455 | If Emacs is crashing, the handlers may tweak what is causing | |
5456 | Emacs to crash in the first place, and it would be a shame if | |
5457 | Emacs failed to autosave perfectly ordinary files because it | |
5458 | couldn't handle some ange-ftp'd file. */ | |
5459 | ||
f14b1c68 | 5460 | for (do_handled_files = 0; do_handled_files < 2; do_handled_files++) |
8e50cc2d | 5461 | for (tail = Vbuffer_alist; CONSP (tail); tail = XCDR (tail)) |
f14b1c68 | 5462 | { |
03699b14 | 5463 | buf = XCDR (XCAR (tail)); |
f14b1c68 | 5464 | b = XBUFFER (buf); |
199607e4 | 5465 | |
e54d3b5d | 5466 | /* Record all the buffers that have auto save mode |
258fd2cb RS |
5467 | in the special file that lists them. For each of these buffers, |
5468 | Record visited name (if any) and auto save name. */ | |
93c30b5f | 5469 | if (STRINGP (b->auto_save_file_name) |
1b335d29 | 5470 | && stream != NULL && do_handled_files == 0) |
e54d3b5d | 5471 | { |
aab12958 | 5472 | BLOCK_INPUT; |
258fd2cb RS |
5473 | if (!NILP (b->filename)) |
5474 | { | |
d5db4077 KR |
5475 | fwrite (SDATA (b->filename), 1, |
5476 | SBYTES (b->filename), stream); | |
258fd2cb | 5477 | } |
1b335d29 | 5478 | putc ('\n', stream); |
d5db4077 KR |
5479 | fwrite (SDATA (b->auto_save_file_name), 1, |
5480 | SBYTES (b->auto_save_file_name), stream); | |
1b335d29 | 5481 | putc ('\n', stream); |
aab12958 | 5482 | UNBLOCK_INPUT; |
e54d3b5d | 5483 | } |
17857782 | 5484 | |
f14b1c68 JB |
5485 | if (!NILP (current_only) |
5486 | && b != current_buffer) | |
5487 | continue; | |
e54d3b5d | 5488 | |
95385625 RS |
5489 | /* Don't auto-save indirect buffers. |
5490 | The base buffer takes care of it. */ | |
5491 | if (b->base_buffer) | |
5492 | continue; | |
5493 | ||
f14b1c68 JB |
5494 | /* Check for auto save enabled |
5495 | and file changed since last auto save | |
5496 | and file changed since last real save. */ | |
93c30b5f | 5497 | if (STRINGP (b->auto_save_file_name) |
95385625 | 5498 | && BUF_SAVE_MODIFF (b) < BUF_MODIFF (b) |
0b5397c2 | 5499 | && BUF_AUTOSAVE_MODIFF (b) < BUF_MODIFF (b) |
82c2d839 | 5500 | /* -1 means we've turned off autosaving for a while--see below. */ |
090101cf | 5501 | && XINT (b->save_length) >= 0 |
f14b1c68 | 5502 | && (do_handled_files |
49307295 KH |
5503 | || NILP (Ffind_file_name_handler (b->auto_save_file_name, |
5504 | Qwrite_region)))) | |
f14b1c68 | 5505 | { |
b60247d9 RS |
5506 | EMACS_TIME before_time, after_time; |
5507 | ||
5508 | EMACS_GET_TIME (before_time); | |
5509 | ||
5510 | /* If we had a failure, don't try again for 20 minutes. */ | |
5511 | if (b->auto_save_failure_time >= 0 | |
5512 | && EMACS_SECS (before_time) - b->auto_save_failure_time < 1200) | |
5513 | continue; | |
5514 | ||
090101cf CY |
5515 | set_buffer_internal (b); |
5516 | if (NILP (Vauto_save_include_big_deletions) | |
4be941e3 RS |
5517 | && (XFASTINT (b->save_length) * 10 |
5518 | > (BUF_Z (b) - BUF_BEG (b)) * 13) | |
f14b1c68 JB |
5519 | /* A short file is likely to change a large fraction; |
5520 | spare the user annoying messages. */ | |
5521 | && XFASTINT (b->save_length) > 5000 | |
5522 | /* These messages are frequent and annoying for `*mail*'. */ | |
5523 | && !EQ (b->filename, Qnil) | |
5524 | && NILP (no_message)) | |
5525 | { | |
5526 | /* It has shrunk too much; turn off auto-saving here. */ | |
a8c828be | 5527 | minibuffer_auto_raise = orig_minibuffer_auto_raise; |
fd91d0d4 | 5528 | message_with_string ("Buffer %s has shrunk a lot; auto save disabled in that buffer until next real save", |
60d67b83 | 5529 | b->name, 1); |
a8c828be | 5530 | minibuffer_auto_raise = 0; |
82c2d839 RS |
5531 | /* Turn off auto-saving until there's a real save, |
5532 | and prevent any more warnings. */ | |
46283abe | 5533 | XSETINT (b->save_length, -1); |
f14b1c68 JB |
5534 | Fsleep_for (make_number (1), Qnil); |
5535 | continue; | |
5536 | } | |
f14b1c68 JB |
5537 | if (!auto_saved && NILP (no_message)) |
5538 | message1 ("Auto-saving..."); | |
5539 | internal_condition_case (auto_save_1, Qt, auto_save_error); | |
5540 | auto_saved++; | |
0b5397c2 | 5541 | BUF_AUTOSAVE_MODIFF (b) = BUF_MODIFF (b); |
090101cf | 5542 | XSETFASTINT (current_buffer->save_length, Z - BEG); |
f14b1c68 | 5543 | set_buffer_internal (old); |
b60247d9 RS |
5544 | |
5545 | EMACS_GET_TIME (after_time); | |
5546 | ||
5547 | /* If auto-save took more than 60 seconds, | |
5548 | assume it was an NFS failure that got a timeout. */ | |
5549 | if (EMACS_SECS (after_time) - EMACS_SECS (before_time) > 60) | |
5550 | b->auto_save_failure_time = EMACS_SECS (after_time); | |
f14b1c68 JB |
5551 | } |
5552 | } | |
570d7624 | 5553 | |
b67f2ca5 RS |
5554 | /* Prevent another auto save till enough input events come in. */ |
5555 | record_auto_save (); | |
570d7624 | 5556 | |
17857782 | 5557 | if (auto_saved && NILP (no_message)) |
f05b275b | 5558 | { |
5794dd61 | 5559 | if (old_message_p) |
31f3d831 | 5560 | { |
5794dd61 RS |
5561 | /* If we are going to restore an old message, |
5562 | give time to read ours. */ | |
83f8d903 | 5563 | sit_for (make_number (1), 0, 0); |
c71106e5 | 5564 | restore_message (); |
31f3d831 | 5565 | } |
ca730bf0 | 5566 | else if (!auto_save_error_occurred) |
31e31a15 CY |
5567 | /* Don't overwrite the error message if an error occurred. |
5568 | If we displayed a message and then restored a state | |
5794dd61 | 5569 | with no message, leave a "done" message on the screen. */ |
f05b275b KH |
5570 | message1 ("Auto-saving...done"); |
5571 | } | |
570d7624 | 5572 | |
ff4c9993 RS |
5573 | Vquit_flag = oquit; |
5574 | ||
5794dd61 | 5575 | /* This restores the message-stack status. */ |
e54d3b5d | 5576 | unbind_to (count, Qnil); |
570d7624 JB |
5577 | return Qnil; |
5578 | } | |
5579 | ||
5580 | DEFUN ("set-buffer-auto-saved", Fset_buffer_auto_saved, | |
8c1a1077 PJ |
5581 | Sset_buffer_auto_saved, 0, 0, 0, |
5582 | doc: /* Mark current buffer as auto-saved with its current text. | |
5583 | No auto-save file will be written until the buffer changes again. */) | |
5584 | () | |
570d7624 | 5585 | { |
0b5397c2 SM |
5586 | /* FIXME: This should not be called in indirect buffers, since |
5587 | they're not autosaved. */ | |
5588 | BUF_AUTOSAVE_MODIFF (current_buffer) = MODIFF; | |
090101cf | 5589 | XSETFASTINT (current_buffer->save_length, Z - BEG); |
b60247d9 RS |
5590 | current_buffer->auto_save_failure_time = -1; |
5591 | return Qnil; | |
5592 | } | |
5593 | ||
5594 | DEFUN ("clear-buffer-auto-save-failure", Fclear_buffer_auto_save_failure, | |
8c1a1077 PJ |
5595 | Sclear_buffer_auto_save_failure, 0, 0, 0, |
5596 | doc: /* Clear any record of a recent auto-save failure in the current buffer. */) | |
5597 | () | |
b60247d9 RS |
5598 | { |
5599 | current_buffer->auto_save_failure_time = -1; | |
570d7624 JB |
5600 | return Qnil; |
5601 | } | |
5602 | ||
5603 | DEFUN ("recent-auto-save-p", Frecent_auto_save_p, Srecent_auto_save_p, | |
8c1a1077 | 5604 | 0, 0, 0, |
68780e2a RS |
5605 | doc: /* Return t if current buffer has been auto-saved recently. |
5606 | More precisely, if it has been auto-saved since last read from or saved | |
5607 | in the visited file. If the buffer has no visited file, | |
5608 | then any auto-save counts as "recent". */) | |
8c1a1077 | 5609 | () |
570d7624 | 5610 | { |
0b5397c2 SM |
5611 | /* FIXME: maybe we should return nil for indirect buffers since |
5612 | they're never autosaved. */ | |
5613 | return (SAVE_MODIFF < BUF_AUTOSAVE_MODIFF (current_buffer) ? Qt : Qnil); | |
570d7624 JB |
5614 | } |
5615 | \f | |
5616 | /* Reading and completing file names */ | |
6e710ae5 | 5617 | |
88208bb8 JD |
5618 | DEFUN ("next-read-file-uses-dialog-p", Fnext_read_file_uses_dialog_p, |
5619 | Snext_read_file_uses_dialog_p, 0, 0, 0, | |
5620 | doc: /* Return t if a call to `read-file-name' will use a dialog. | |
5621 | The return value is only relevant for a call to `read-file-name' that happens | |
1a0de25c | 5622 | before any other event (mouse or keypress) is handled. */) |
88208bb8 JD |
5623 | () |
5624 | { | |
9e2a2647 | 5625 | #if defined (USE_MOTIF) || defined (HAVE_NTGUI) || defined (USE_GTK) |
88208bb8 JD |
5626 | if ((NILP (last_nonmenu_event) || CONSP (last_nonmenu_event)) |
5627 | && use_dialog_box | |
5628 | && use_file_dialog | |
5629 | && have_menus_p ()) | |
5630 | return Qt; | |
5631 | #endif | |
5632 | return Qnil; | |
5633 | } | |
d4a42098 | 5634 | |
dbd50d4b SM |
5635 | Lisp_Object |
5636 | Fread_file_name (prompt, dir, default_filename, mustmatch, initial, predicate) | |
59ffe07d | 5637 | Lisp_Object prompt, dir, default_filename, mustmatch, initial, predicate; |
570d7624 | 5638 | { |
570d7624 | 5639 | struct gcpro gcpro1, gcpro2; |
dbd50d4b | 5640 | Lisp_Object args[7]; |
a79485af | 5641 | |
71e1f69d | 5642 | GCPRO1 (default_filename); |
dbd50d4b SM |
5643 | args[0] = intern ("read-file-name"); |
5644 | args[1] = prompt; | |
5645 | args[2] = dir; | |
5646 | args[3] = default_filename; | |
5647 | args[4] = mustmatch; | |
5648 | args[5] = initial; | |
5649 | args[6] = predicate; | |
5650 | RETURN_UNGCPRO (Ffuncall (7, args)); | |
570d7624 | 5651 | } |
9c856db9 | 5652 | |
570d7624 | 5653 | \f |
dfcf069d | 5654 | void |
570d7624 JB |
5655 | syms_of_fileio () |
5656 | { | |
d67b4f80 DN |
5657 | Qoperations = intern_c_string ("operations"); |
5658 | Qexpand_file_name = intern_c_string ("expand-file-name"); | |
5659 | Qsubstitute_in_file_name = intern_c_string ("substitute-in-file-name"); | |
5660 | Qdirectory_file_name = intern_c_string ("directory-file-name"); | |
5661 | Qfile_name_directory = intern_c_string ("file-name-directory"); | |
5662 | Qfile_name_nondirectory = intern_c_string ("file-name-nondirectory"); | |
5663 | Qunhandled_file_name_directory = intern_c_string ("unhandled-file-name-directory"); | |
5664 | Qfile_name_as_directory = intern_c_string ("file-name-as-directory"); | |
5665 | Qcopy_file = intern_c_string ("copy-file"); | |
5666 | Qmake_directory_internal = intern_c_string ("make-directory-internal"); | |
5667 | Qmake_directory = intern_c_string ("make-directory"); | |
5668 | Qdelete_directory_internal = intern_c_string ("delete-directory-internal"); | |
5669 | Qdelete_file = intern_c_string ("delete-file"); | |
5670 | Qrename_file = intern_c_string ("rename-file"); | |
5671 | Qadd_name_to_file = intern_c_string ("add-name-to-file"); | |
5672 | Qmake_symbolic_link = intern_c_string ("make-symbolic-link"); | |
5673 | Qfile_exists_p = intern_c_string ("file-exists-p"); | |
5674 | Qfile_executable_p = intern_c_string ("file-executable-p"); | |
5675 | Qfile_readable_p = intern_c_string ("file-readable-p"); | |
5676 | Qfile_writable_p = intern_c_string ("file-writable-p"); | |
5677 | Qfile_symlink_p = intern_c_string ("file-symlink-p"); | |
5678 | Qaccess_file = intern_c_string ("access-file"); | |
5679 | Qfile_directory_p = intern_c_string ("file-directory-p"); | |
5680 | Qfile_regular_p = intern_c_string ("file-regular-p"); | |
5681 | Qfile_accessible_directory_p = intern_c_string ("file-accessible-directory-p"); | |
5682 | Qfile_modes = intern_c_string ("file-modes"); | |
5683 | Qset_file_modes = intern_c_string ("set-file-modes"); | |
5684 | Qset_file_times = intern_c_string ("set-file-times"); | |
574c05e2 KK |
5685 | Qfile_selinux_context = intern_c_string("file-selinux-context"); |
5686 | Qset_file_selinux_context = intern_c_string("set-file-selinux-context"); | |
d67b4f80 DN |
5687 | Qfile_newer_than_file_p = intern_c_string ("file-newer-than-file-p"); |
5688 | Qinsert_file_contents = intern_c_string ("insert-file-contents"); | |
5689 | Qwrite_region = intern_c_string ("write-region"); | |
5690 | Qverify_visited_file_modtime = intern_c_string ("verify-visited-file-modtime"); | |
5691 | Qset_visited_file_modtime = intern_c_string ("set-visited-file-modtime"); | |
5692 | Qauto_save_coding = intern_c_string ("auto-save-coding"); | |
32f4334d | 5693 | |
f6c9b683 | 5694 | staticpro (&Qoperations); |
642ef245 | 5695 | staticpro (&Qexpand_file_name); |
273e0829 | 5696 | staticpro (&Qsubstitute_in_file_name); |
642ef245 JB |
5697 | staticpro (&Qdirectory_file_name); |
5698 | staticpro (&Qfile_name_directory); | |
5699 | staticpro (&Qfile_name_nondirectory); | |
5700 | staticpro (&Qunhandled_file_name_directory); | |
5701 | staticpro (&Qfile_name_as_directory); | |
15c65264 | 5702 | staticpro (&Qcopy_file); |
c34b559d | 5703 | staticpro (&Qmake_directory_internal); |
b272d624 | 5704 | staticpro (&Qmake_directory); |
9d8f3bd9 | 5705 | staticpro (&Qdelete_directory_internal); |
15c65264 RS |
5706 | staticpro (&Qdelete_file); |
5707 | staticpro (&Qrename_file); | |
5708 | staticpro (&Qadd_name_to_file); | |
5709 | staticpro (&Qmake_symbolic_link); | |
5710 | staticpro (&Qfile_exists_p); | |
5711 | staticpro (&Qfile_executable_p); | |
5712 | staticpro (&Qfile_readable_p); | |
15c65264 | 5713 | staticpro (&Qfile_writable_p); |
1f8653eb RS |
5714 | staticpro (&Qaccess_file); |
5715 | staticpro (&Qfile_symlink_p); | |
15c65264 | 5716 | staticpro (&Qfile_directory_p); |
adedc71d | 5717 | staticpro (&Qfile_regular_p); |
15c65264 RS |
5718 | staticpro (&Qfile_accessible_directory_p); |
5719 | staticpro (&Qfile_modes); | |
5720 | staticpro (&Qset_file_modes); | |
819da85b | 5721 | staticpro (&Qset_file_times); |
574c05e2 KK |
5722 | staticpro (&Qfile_selinux_context); |
5723 | staticpro (&Qset_file_selinux_context); | |
15c65264 RS |
5724 | staticpro (&Qfile_newer_than_file_p); |
5725 | staticpro (&Qinsert_file_contents); | |
5726 | staticpro (&Qwrite_region); | |
5727 | staticpro (&Qverify_visited_file_modtime); | |
0a61794b | 5728 | staticpro (&Qset_visited_file_modtime); |
356a6224 | 5729 | staticpro (&Qauto_save_coding); |
642ef245 | 5730 | |
d67b4f80 | 5731 | Qfile_name_history = intern_c_string ("file-name-history"); |
642ef245 | 5732 | Fset (Qfile_name_history, Qnil); |
15c65264 RS |
5733 | staticpro (&Qfile_name_history); |
5734 | ||
d67b4f80 | 5735 | Qfile_error = intern_c_string ("file-error"); |
570d7624 | 5736 | staticpro (&Qfile_error); |
d67b4f80 | 5737 | Qfile_already_exists = intern_c_string ("file-already-exists"); |
570d7624 | 5738 | staticpro (&Qfile_already_exists); |
d67b4f80 | 5739 | Qfile_date_error = intern_c_string ("file-date-error"); |
c0b7b21c | 5740 | staticpro (&Qfile_date_error); |
d67b4f80 | 5741 | Qexcl = intern_c_string ("excl"); |
505ab9bc | 5742 | staticpro (&Qexcl); |
570d7624 | 5743 | |
5e570b75 | 5744 | #ifdef DOS_NT |
d67b4f80 | 5745 | Qfind_buffer_file_type = intern_c_string ("find-buffer-file-type"); |
4c3c22f3 | 5746 | staticpro (&Qfind_buffer_file_type); |
5e570b75 | 5747 | #endif /* DOS_NT */ |
4c3c22f3 | 5748 | |
b1d1b865 | 5749 | DEFVAR_LISP ("file-name-coding-system", &Vfile_name_coding_system, |
8c1a1077 | 5750 | doc: /* *Coding system for encoding file names. |
346ebf53 | 5751 | If it is nil, `default-file-name-coding-system' (which see) is used. */); |
b1d1b865 RS |
5752 | Vfile_name_coding_system = Qnil; |
5753 | ||
cd913586 KH |
5754 | DEFVAR_LISP ("default-file-name-coding-system", |
5755 | &Vdefault_file_name_coding_system, | |
8c1a1077 | 5756 | doc: /* Default coding system for encoding file names. |
346ebf53 | 5757 | This variable is used only when `file-name-coding-system' is nil. |
8c1a1077 | 5758 | |
346ebf53 | 5759 | This variable is set/changed by the command `set-language-environment'. |
8c1a1077 | 5760 | User should not set this variable manually, |
346ebf53 | 5761 | instead use `file-name-coding-system' to get a constant encoding |
8c1a1077 | 5762 | of file names regardless of the current language environment. */); |
cd913586 KH |
5763 | Vdefault_file_name_coding_system = Qnil; |
5764 | ||
d67b4f80 | 5765 | Qformat_decode = intern_c_string ("format-decode"); |
0d420e88 | 5766 | staticpro (&Qformat_decode); |
d67b4f80 | 5767 | Qformat_annotate_function = intern_c_string ("format-annotate-function"); |
0d420e88 | 5768 | staticpro (&Qformat_annotate_function); |
d67b4f80 | 5769 | Qafter_insert_file_set_coding = intern_c_string ("after-insert-file-set-coding"); |
2080470e | 5770 | staticpro (&Qafter_insert_file_set_coding); |
efdc16c9 | 5771 | |
d67b4f80 | 5772 | Qcar_less_than_car = intern_c_string ("car-less-than-car"); |
d6a3cc15 RS |
5773 | staticpro (&Qcar_less_than_car); |
5774 | ||
570d7624 | 5775 | Fput (Qfile_error, Qerror_conditions, |
d67b4f80 | 5776 | Fpurecopy (list2 (Qfile_error, Qerror))); |
570d7624 | 5777 | Fput (Qfile_error, Qerror_message, |
d67b4f80 | 5778 | make_pure_c_string ("File error")); |
570d7624 JB |
5779 | |
5780 | Fput (Qfile_already_exists, Qerror_conditions, | |
d67b4f80 | 5781 | Fpurecopy (list3 (Qfile_already_exists, Qfile_error, Qerror))); |
570d7624 | 5782 | Fput (Qfile_already_exists, Qerror_message, |
d67b4f80 | 5783 | make_pure_c_string ("File already exists")); |
570d7624 | 5784 | |
c0b7b21c | 5785 | Fput (Qfile_date_error, Qerror_conditions, |
d67b4f80 | 5786 | Fpurecopy (list3 (Qfile_date_error, Qfile_error, Qerror))); |
c0b7b21c | 5787 | Fput (Qfile_date_error, Qerror_message, |
d67b4f80 | 5788 | make_pure_c_string ("Cannot set file date")); |
c0b7b21c | 5789 | |
199607e4 | 5790 | DEFVAR_LISP ("directory-sep-char", &Vdirectory_sep_char, |
8c1a1077 | 5791 | doc: /* Directory separator character for built-in functions that return file names. |
d57563b6 | 5792 | The value is always ?/. Don't use this variable, just use `/'. */); |
e8903e00 | 5793 | XSETFASTINT (Vdirectory_sep_char, '/'); |
199607e4 | 5794 | |
1d1826db | 5795 | DEFVAR_LISP ("file-name-handler-alist", &Vfile_name_handler_alist, |
8c1a1077 PJ |
5796 | doc: /* *Alist of elements (REGEXP . HANDLER) for file names handled specially. |
5797 | If a file name matches REGEXP, then all I/O on that file is done by calling | |
5798 | HANDLER. | |
5799 | ||
5800 | The first argument given to HANDLER is the name of the I/O primitive | |
5801 | to be handled; the remaining arguments are the arguments that were | |
5802 | passed to that primitive. For example, if you do | |
5803 | (file-exists-p FILENAME) | |
5804 | and FILENAME is handled by HANDLER, then HANDLER is called like this: | |
5805 | (funcall HANDLER 'file-exists-p FILENAME) | |
5806 | The function `find-file-name-handler' checks this list for a handler | |
5807 | for its argument. */); | |
09121adc RS |
5808 | Vfile_name_handler_alist = Qnil; |
5809 | ||
0414b394 KH |
5810 | DEFVAR_LISP ("set-auto-coding-function", |
5811 | &Vset_auto_coding_function, | |
8c1a1077 PJ |
5812 | doc: /* If non-nil, a function to call to decide a coding system of file. |
5813 | Two arguments are passed to this function: the file name | |
5814 | and the length of a file contents following the point. | |
5815 | This function should return a coding system to decode the file contents. | |
5816 | It should check the file name against `auto-coding-alist'. | |
5817 | If no coding system is decided, it should check a coding system | |
5818 | specified in the heading lines with the format: | |
5819 | -*- ... coding: CODING-SYSTEM; ... -*- | |
5820 | or local variable spec of the tailing lines with `coding:' tag. */); | |
0414b394 | 5821 | Vset_auto_coding_function = Qnil; |
c9e82392 | 5822 | |
d6a3cc15 | 5823 | DEFVAR_LISP ("after-insert-file-functions", &Vafter_insert_file_functions, |
8c1a1077 | 5824 | doc: /* A list of functions to be called at the end of `insert-file-contents'. |
0cf9f5b5 RS |
5825 | Each is passed one argument, the number of characters inserted, |
5826 | with point at the start of the inserted text. Each function | |
5827 | should leave point the same, and return the new character count. | |
cf6d2357 RS |
5828 | If `insert-file-contents' is intercepted by a handler from |
5829 | `file-name-handler-alist', that handler is responsible for calling the | |
5830 | functions in `after-insert-file-functions' if appropriate. */); | |
d6a3cc15 RS |
5831 | Vafter_insert_file_functions = Qnil; |
5832 | ||
5833 | DEFVAR_LISP ("write-region-annotate-functions", &Vwrite_region_annotate_functions, | |
8c1a1077 PJ |
5834 | doc: /* A list of functions to be called at the start of `write-region'. |
5835 | Each is passed two arguments, START and END as for `write-region'. | |
5836 | These are usually two numbers but not always; see the documentation | |
5837 | for `write-region'. The function should return a list of pairs | |
5838 | of the form (POSITION . STRING), consisting of strings to be effectively | |
5839 | inserted at the specified positions of the file being written (1 means to | |
5840 | insert before the first byte written). The POSITIONs must be sorted into | |
67fbc0cb CY |
5841 | increasing order. |
5842 | ||
5843 | If there are several annotation functions, the lists returned by these | |
5844 | functions are merged destructively. As each annotation function runs, | |
5845 | the variable `write-region-annotations-so-far' contains a list of all | |
5846 | annotations returned by previous annotation functions. | |
5847 | ||
5848 | An annotation function can return with a different buffer current. | |
5849 | Doing so removes the annotations returned by previous functions, and | |
5850 | resets START and END to `point-min' and `point-max' of the new buffer. | |
5851 | ||
5852 | After `write-region' completes, Emacs calls the function stored in | |
5853 | `write-region-post-annotation-function', once for each buffer that was | |
5854 | current when building the annotations (i.e., at least once), with that | |
5855 | buffer current. */); | |
d6a3cc15 | 5856 | Vwrite_region_annotate_functions = Qnil; |
bd235610 SM |
5857 | staticpro (&Qwrite_region_annotate_functions); |
5858 | Qwrite_region_annotate_functions | |
d67b4f80 | 5859 | = intern_c_string ("write-region-annotate-functions"); |
d6a3cc15 | 5860 | |
67fbc0cb CY |
5861 | DEFVAR_LISP ("write-region-post-annotation-function", |
5862 | &Vwrite_region_post_annotation_function, | |
5863 | doc: /* Function to call after `write-region' completes. | |
5864 | The function is called with no arguments. If one or more of the | |
5865 | annotation functions in `write-region-annotate-functions' changed the | |
5866 | current buffer, the function stored in this variable is called for | |
5867 | each of those additional buffers as well, in addition to the original | |
5868 | buffer. The relevant buffer is current during each function call. */); | |
5869 | Vwrite_region_post_annotation_function = Qnil; | |
5870 | staticpro (&Vwrite_region_annotation_buffers); | |
5871 | ||
6fc6f94b RS |
5872 | DEFVAR_LISP ("write-region-annotations-so-far", |
5873 | &Vwrite_region_annotations_so_far, | |
8c1a1077 PJ |
5874 | doc: /* When an annotation function is called, this holds the previous annotations. |
5875 | These are the annotations made by other annotation functions | |
5876 | that were already called. See also `write-region-annotate-functions'. */); | |
6fc6f94b RS |
5877 | Vwrite_region_annotations_so_far = Qnil; |
5878 | ||
82c2d839 | 5879 | DEFVAR_LISP ("inhibit-file-name-handlers", &Vinhibit_file_name_handlers, |
8c1a1077 PJ |
5880 | doc: /* A list of file name handlers that temporarily should not be used. |
5881 | This applies only to the operation `inhibit-file-name-operation'. */); | |
82c2d839 RS |
5882 | Vinhibit_file_name_handlers = Qnil; |
5883 | ||
a65970a0 | 5884 | DEFVAR_LISP ("inhibit-file-name-operation", &Vinhibit_file_name_operation, |
8c1a1077 | 5885 | doc: /* The operation for which `inhibit-file-name-handlers' is applicable. */); |
a65970a0 RS |
5886 | Vinhibit_file_name_operation = Qnil; |
5887 | ||
e54d3b5d | 5888 | DEFVAR_LISP ("auto-save-list-file-name", &Vauto_save_list_file_name, |
8c1a1077 PJ |
5889 | doc: /* File name in which we write a list of all auto save file names. |
5890 | This variable is initialized automatically from `auto-save-list-file-prefix' | |
5891 | shortly after Emacs reads your `.emacs' file, if you have not yet given it | |
5892 | a non-nil value. */); | |
e54d3b5d RS |
5893 | Vauto_save_list_file_name = Qnil; |
5894 | ||
699b53bc CY |
5895 | DEFVAR_LISP ("auto-save-visited-file-name", &Vauto_save_visited_file_name, |
5896 | doc: /* Non-nil says auto-save a buffer in the file it is visiting, when practical. | |
5897 | Normally auto-save files are written under other names. */); | |
5898 | Vauto_save_visited_file_name = Qnil; | |
5899 | ||
090101cf CY |
5900 | DEFVAR_LISP ("auto-save-include-big-deletions", &Vauto_save_include_big_deletions, |
5901 | doc: /* If non-nil, auto-save even if a large part of the text is deleted. | |
5902 | If nil, deleting a substantial portion of the text disables auto-save | |
5903 | in the buffer; this is the default behavior, because the auto-save | |
5904 | file is usually more useful if it contains the deleted text. */); | |
5905 | Vauto_save_include_big_deletions = Qnil; | |
5906 | ||
ccf61795 RF |
5907 | #ifdef HAVE_FSYNC |
5908 | DEFVAR_BOOL ("write-region-inhibit-fsync", &write_region_inhibit_fsync, | |
e3f509dd RF |
5909 | doc: /* *Non-nil means don't call fsync in `write-region'. |
5910 | This variable affects calls to `write-region' as well as save commands. | |
5911 | A non-nil value may result in data loss! */); | |
ccf61795 RF |
5912 | write_region_inhibit_fsync = 0; |
5913 | #endif | |
5914 | ||
6cf29fe8 JR |
5915 | DEFVAR_BOOL ("delete-by-moving-to-trash", &delete_by_moving_to_trash, |
5916 | doc: /* Specifies whether to use the system's trash can. | |
f1a5d776 CY |
5917 | When non-nil, certain file deletion commands use the function |
5918 | `move-file-to-trash' instead of deleting files outright. | |
5919 | This includes interactive calls to `delete-file' and | |
5920 | `delete-directory' and the Dired deletion commands. */); | |
6cf29fe8 | 5921 | delete_by_moving_to_trash = 0; |
d67b4f80 DN |
5922 | Qdelete_by_moving_to_trash = intern_c_string ("delete-by-moving-to-trash"); |
5923 | Qmove_file_to_trash = intern_c_string ("move-file-to-trash"); | |
6cf29fe8 | 5924 | staticpro (&Qmove_file_to_trash); |
8719abec CY |
5925 | Qcopy_directory = intern_c_string ("copy-directory"); |
5926 | staticpro (&Qcopy_directory); | |
5927 | Qdelete_directory = intern_c_string ("delete-directory"); | |
5928 | staticpro (&Qdelete_directory); | |
6cf29fe8 | 5929 | |
642ef245 | 5930 | defsubr (&Sfind_file_name_handler); |
570d7624 JB |
5931 | defsubr (&Sfile_name_directory); |
5932 | defsubr (&Sfile_name_nondirectory); | |
642ef245 | 5933 | defsubr (&Sunhandled_file_name_directory); |
570d7624 JB |
5934 | defsubr (&Sfile_name_as_directory); |
5935 | defsubr (&Sdirectory_file_name); | |
5936 | defsubr (&Smake_temp_name); | |
5937 | defsubr (&Sexpand_file_name); | |
5938 | defsubr (&Ssubstitute_in_file_name); | |
5939 | defsubr (&Scopy_file); | |
9bbe01fb | 5940 | defsubr (&Smake_directory_internal); |
9d8f3bd9 | 5941 | defsubr (&Sdelete_directory_internal); |
570d7624 JB |
5942 | defsubr (&Sdelete_file); |
5943 | defsubr (&Srename_file); | |
5944 | defsubr (&Sadd_name_to_file); | |
570d7624 | 5945 | defsubr (&Smake_symbolic_link); |
570d7624 JB |
5946 | defsubr (&Sfile_name_absolute_p); |
5947 | defsubr (&Sfile_exists_p); | |
5948 | defsubr (&Sfile_executable_p); | |
5949 | defsubr (&Sfile_readable_p); | |
5950 | defsubr (&Sfile_writable_p); | |
1f8653eb | 5951 | defsubr (&Saccess_file); |
570d7624 JB |
5952 | defsubr (&Sfile_symlink_p); |
5953 | defsubr (&Sfile_directory_p); | |
b72dea2a | 5954 | defsubr (&Sfile_accessible_directory_p); |
f793dc6c | 5955 | defsubr (&Sfile_regular_p); |
570d7624 JB |
5956 | defsubr (&Sfile_modes); |
5957 | defsubr (&Sset_file_modes); | |
819da85b | 5958 | defsubr (&Sset_file_times); |
574c05e2 KK |
5959 | defsubr (&Sfile_selinux_context); |
5960 | defsubr (&Sset_file_selinux_context); | |
c24e9a53 RS |
5961 | defsubr (&Sset_default_file_modes); |
5962 | defsubr (&Sdefault_file_modes); | |
570d7624 JB |
5963 | defsubr (&Sfile_newer_than_file_p); |
5964 | defsubr (&Sinsert_file_contents); | |
5965 | defsubr (&Swrite_region); | |
d6a3cc15 | 5966 | defsubr (&Scar_less_than_car); |
570d7624 JB |
5967 | defsubr (&Sverify_visited_file_modtime); |
5968 | defsubr (&Sclear_visited_file_modtime); | |
f5d5eccf | 5969 | defsubr (&Svisited_file_modtime); |
570d7624 JB |
5970 | defsubr (&Sset_visited_file_modtime); |
5971 | defsubr (&Sdo_auto_save); | |
5972 | defsubr (&Sset_buffer_auto_saved); | |
b60247d9 | 5973 | defsubr (&Sclear_buffer_auto_save_failure); |
570d7624 JB |
5974 | defsubr (&Srecent_auto_save_p); |
5975 | ||
88208bb8 | 5976 | defsubr (&Snext_read_file_uses_dialog_p); |
85ffea93 | 5977 | |
697c17a2 | 5978 | #ifdef HAVE_SYNC |
85ffea93 | 5979 | defsubr (&Sunix_sync); |
483a2e10 | 5980 | #endif |
570d7624 | 5981 | } |
6b61353c KH |
5982 | |
5983 | /* arch-tag: 64ba3fd7-f844-4fb2-ba4b-427eb928786c | |
5984 | (do not change this comment) */ |