Commit | Line | Data |
---|---|---|
570d7624 | 1 | /* File IO for GNU Emacs. |
0b5538bd TTN |
2 | Copyright (C) 1985, 1986, 1987, 1988, 1993, 1994, 1995, 1996, |
3 | 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, | |
8cabe764 | 4 | 2005, 2006, 2007, 2008 Free Software Foundation, Inc. |
570d7624 JB |
5 | |
6 | This file is part of GNU Emacs. | |
7 | ||
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> | |
bfb61299 | 31 | |
29beb080 RS |
32 | #ifdef HAVE_UNISTD_H |
33 | #include <unistd.h> | |
34 | #endif | |
35 | ||
f73b0ada BF |
36 | #if !defined (S_ISLNK) && defined (S_IFLNK) |
37 | # define S_ISLNK(m) (((m) & S_IFMT) == S_IFLNK) | |
38 | #endif | |
39 | ||
bb369dc6 RS |
40 | #if !defined (S_ISFIFO) && defined (S_IFIFO) |
41 | # define S_ISFIFO(m) (((m) & S_IFMT) == S_IFIFO) | |
42 | #endif | |
43 | ||
f73b0ada BF |
44 | #if !defined (S_ISREG) && defined (S_IFREG) |
45 | # define S_ISREG(m) (((m) & S_IFMT) == S_IFREG) | |
46 | #endif | |
47 | ||
5b9c0a1d | 48 | #ifdef HAVE_PWD_H |
570d7624 | 49 | #include <pwd.h> |
bfb61299 JB |
50 | #endif |
51 | ||
570d7624 | 52 | #include <ctype.h> |
570d7624 JB |
53 | #include <errno.h> |
54 | ||
bfb61299 | 55 | #ifndef vax11c |
f12ef5eb | 56 | #ifndef USE_CRT_DLL |
570d7624 | 57 | extern int errno; |
570d7624 | 58 | #endif |
f12ef5eb | 59 | #endif |
570d7624 | 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> | |
81 | #if __DJGPP__ >= 2 | |
82 | #include <fcntl.h> | |
83 | #include <string.h> | |
84 | #endif | |
85 | #endif | |
86 | ||
199607e4 RS |
87 | #ifdef DOS_NT |
88 | #define CORRECT_DIR_SEPS(s) \ | |
89 | do { if ('/' == DIRECTORY_SEP) dostounix_filename (s); \ | |
90 | else unixtodos_filename (s); \ | |
91 | } while (0) | |
92 | /* On Windows, drive letters must be alphabetic - on DOS, the Netware | |
93 | redirector allows the six letters between 'Z' and 'a' as well. */ | |
94 | #ifdef MSDOS | |
95 | #define IS_DRIVE(x) ((x) >= 'A' && (x) <= 'z') | |
96 | #endif | |
97 | #ifdef WINDOWSNT | |
98 | #define IS_DRIVE(x) isalpha (x) | |
99 | #endif | |
f54b565c MB |
100 | /* Need to lower-case the drive letter, or else expanded |
101 | filenames will sometimes compare inequal, because | |
102 | `expand-file-name' doesn't always down-case the drive letter. */ | |
103 | #define DRIVE_LETTER(x) (tolower (x)) | |
199607e4 RS |
104 | #endif |
105 | ||
de5bf5d3 | 106 | #include "systime.h" |
570d7624 JB |
107 | |
108 | #ifdef HPUX | |
109 | #include <netio.h> | |
47e7b9e5 | 110 | #endif |
570d7624 | 111 | |
9c856db9 GM |
112 | #include "commands.h" |
113 | extern int use_dialog_box; | |
6b61353c | 114 | extern int use_file_dialog; |
9c856db9 | 115 | |
570d7624 JB |
116 | #ifndef O_WRONLY |
117 | #define O_WRONLY 1 | |
118 | #endif | |
119 | ||
4018b5ef RS |
120 | #ifndef O_RDONLY |
121 | #define O_RDONLY 0 | |
122 | #endif | |
123 | ||
8f6df9b5 EZ |
124 | #ifndef S_ISLNK |
125 | # define lstat stat | |
126 | #endif | |
127 | ||
c1558952 TTN |
128 | #ifndef FILE_SYSTEM_CASE |
129 | #define FILE_SYSTEM_CASE(filename) (filename) | |
130 | #endif | |
131 | ||
570d7624 JB |
132 | /* Nonzero during writing of auto-save files */ |
133 | int auto_saving; | |
134 | ||
135 | /* Set by auto_save_1 to mode of original file so Fwrite_region will create | |
136 | a new file with the same mode as the original */ | |
137 | int auto_save_mode_bits; | |
138 | ||
ca730bf0 CY |
139 | /* Set by auto_save_1 if an error occurred during the last auto-save. */ |
140 | int auto_save_error_occurred; | |
141 | ||
356a6224 KH |
142 | /* The symbol bound to coding-system-for-read when |
143 | insert-file-contents is called for recovering a file. This is not | |
144 | an actual coding system name, but just an indicator to tell | |
145 | insert-file-contents to use `emacs-mule' with a special flag for | |
146 | auto saving and recovering a file. */ | |
147 | Lisp_Object Qauto_save_coding; | |
148 | ||
b1d1b865 RS |
149 | /* Coding system for file names, or nil if none. */ |
150 | Lisp_Object Vfile_name_coding_system; | |
151 | ||
cd913586 KH |
152 | /* Coding system for file names used only when |
153 | Vfile_name_coding_system is nil. */ | |
154 | Lisp_Object Vdefault_file_name_coding_system; | |
155 | ||
199607e4 | 156 | /* Alist of elements (REGEXP . HANDLER) for file names |
32f4334d RS |
157 | whose I/O is done with a special handler. */ |
158 | Lisp_Object Vfile_name_handler_alist; | |
159 | ||
f6c9b683 RS |
160 | /* Property name of a file name handler, |
161 | which gives a list of operations it handles.. */ | |
162 | Lisp_Object Qoperations; | |
163 | ||
0d420e88 BG |
164 | /* Lisp functions for translating file formats */ |
165 | Lisp_Object Qformat_decode, Qformat_annotate_function; | |
166 | ||
c9e82392 | 167 | /* Function to be called to decide a coding system of a reading file. */ |
0414b394 | 168 | Lisp_Object Vset_auto_coding_function; |
c9e82392 | 169 | |
d6a3cc15 RS |
170 | /* Functions to be called to process text properties in inserted file. */ |
171 | Lisp_Object Vafter_insert_file_functions; | |
172 | ||
2080470e | 173 | /* Lisp function for setting buffer-file-coding-system and the |
b6426b03 | 174 | multibyteness of the current buffer after inserting a file. */ |
2080470e | 175 | Lisp_Object Qafter_insert_file_set_coding; |
b6426b03 | 176 | |
d6a3cc15 RS |
177 | /* Functions to be called to create text property annotations for file. */ |
178 | Lisp_Object Vwrite_region_annotate_functions; | |
bd235610 | 179 | Lisp_Object Qwrite_region_annotate_functions; |
d6a3cc15 | 180 | |
6fc6f94b RS |
181 | /* During build_annotations, each time an annotation function is called, |
182 | this holds the annotations made by the previous functions. */ | |
183 | Lisp_Object Vwrite_region_annotations_so_far; | |
184 | ||
e54d3b5d RS |
185 | /* File name in which we write a list of all our auto save files. */ |
186 | Lisp_Object Vauto_save_list_file_name; | |
187 | ||
699b53bc CY |
188 | /* Whether or not files are auto-saved into themselves. */ |
189 | Lisp_Object Vauto_save_visited_file_name; | |
190 | ||
199607e4 RS |
191 | /* On NT, specifies the directory separator character, used (eg.) when |
192 | expanding file names. This can be bound to / or \. */ | |
193 | Lisp_Object Vdirectory_sep_char; | |
194 | ||
ccf61795 RF |
195 | #ifdef HAVE_FSYNC |
196 | /* Nonzero means skip the call to fsync in Fwrite-region. */ | |
197 | int write_region_inhibit_fsync; | |
198 | #endif | |
199 | ||
6cf29fe8 JR |
200 | /* Non-zero means call move-file-to-trash in Fdelete_file or |
201 | Fdelete_directory. */ | |
202 | int delete_by_moving_to_trash; | |
203 | ||
204 | /* Lisp function for moving files to trash. */ | |
205 | Lisp_Object Qmove_file_to_trash; | |
206 | ||
84f6296a RS |
207 | extern Lisp_Object Vuser_login_name; |
208 | ||
c1c4693e RS |
209 | #ifdef WINDOWSNT |
210 | extern Lisp_Object Vw32_get_true_file_attributes; | |
211 | #endif | |
212 | ||
84f6296a RS |
213 | extern int minibuf_level; |
214 | ||
a8c828be RS |
215 | extern int minibuffer_auto_raise; |
216 | ||
75fa7206 RS |
217 | extern int history_delete_duplicates; |
218 | ||
a65970a0 RS |
219 | /* These variables describe handlers that have "already" had a chance |
220 | to handle the current operation. | |
221 | ||
222 | Vinhibit_file_name_handlers is a list of file name handlers. | |
223 | Vinhibit_file_name_operation is the operation being handled. | |
224 | If we try to handle that operation, we ignore those handlers. */ | |
225 | ||
82c2d839 | 226 | static Lisp_Object Vinhibit_file_name_handlers; |
a65970a0 | 227 | static Lisp_Object Vinhibit_file_name_operation; |
82c2d839 | 228 | |
c0b7b21c | 229 | Lisp_Object Qfile_error, Qfile_already_exists, Qfile_date_error; |
505ab9bc | 230 | Lisp_Object Qexcl; |
15c65264 RS |
231 | Lisp_Object Qfile_name_history; |
232 | ||
d6a3cc15 RS |
233 | Lisp_Object Qcar_less_than_car; |
234 | ||
ce51c54c | 235 | static int a_write P_ ((int, Lisp_Object, int, int, |
b9013200 | 236 | Lisp_Object *, struct coding_system *)); |
ce51c54c KH |
237 | static int e_write P_ ((int, Lisp_Object, int, int, struct coding_system *)); |
238 | ||
ec7adf26 | 239 | \f |
5d01d666 | 240 | void |
570d7624 | 241 | report_file_error (string, data) |
19290c65 | 242 | const char *string; |
570d7624 JB |
243 | Lisp_Object data; |
244 | { | |
245 | Lisp_Object errstring; | |
505ab9bc | 246 | int errorno = errno; |
d7259fdb | 247 | char *str; |
570d7624 | 248 | |
ca9c0567 | 249 | synchronize_system_messages_locale (); |
d7259fdb KH |
250 | str = strerror (errorno); |
251 | errstring = code_convert_string_norecord (make_unibyte_string (str, | |
252 | strlen (str)), | |
68c45bf0 PE |
253 | Vlocale_coding_system, 0); |
254 | ||
570d7624 | 255 | while (1) |
505ab9bc RS |
256 | switch (errorno) |
257 | { | |
258 | case EEXIST: | |
24b1ddad | 259 | xsignal (Qfile_already_exists, Fcons (errstring, data)); |
505ab9bc RS |
260 | break; |
261 | default: | |
262 | /* System error messages are capitalized. Downcase the initial | |
39824137 EZ |
263 | unless it is followed by a slash. (The slash case caters to |
264 | error messages that begin with "I/O" or, in German, "E/A".) */ | |
d5443ffd KH |
265 | if (STRING_MULTIBYTE (errstring) |
266 | && ! EQ (Faref (errstring, make_number (1)), make_number ('/'))) | |
6c0969ca KH |
267 | { |
268 | int c; | |
269 | ||
270 | str = (char *) SDATA (errstring); | |
271 | c = STRING_CHAR (str, 0); | |
c7c7a80c | 272 | Faset (errstring, make_number (0), make_number (DOWNCASE (c))); |
6c0969ca | 273 | } |
505ab9bc | 274 | |
24b1ddad | 275 | xsignal (Qfile_error, |
505ab9bc RS |
276 | Fcons (build_string (string), Fcons (errstring, data))); |
277 | } | |
570d7624 | 278 | } |
b5148e85 | 279 | |
b27a1703 | 280 | Lisp_Object |
b5148e85 RS |
281 | close_file_unwind (fd) |
282 | Lisp_Object fd; | |
283 | { | |
68c45bf0 | 284 | emacs_close (XFASTINT (fd)); |
b27a1703 | 285 | return Qnil; |
b5148e85 | 286 | } |
a1d2b64a RS |
287 | |
288 | /* Restore point, having saved it as a marker. */ | |
289 | ||
ec7adf26 | 290 | static Lisp_Object |
a1d2b64a | 291 | restore_point_unwind (location) |
199607e4 | 292 | Lisp_Object location; |
a1d2b64a | 293 | { |
ec7adf26 | 294 | Fgoto_char (location); |
a1d2b64a | 295 | Fset_marker (location, Qnil, Qnil); |
b27a1703 | 296 | return Qnil; |
a1d2b64a | 297 | } |
59c94f03 | 298 | |
570d7624 | 299 | \f |
0bf2eed2 | 300 | Lisp_Object Qexpand_file_name; |
273e0829 | 301 | Lisp_Object Qsubstitute_in_file_name; |
0bf2eed2 RS |
302 | Lisp_Object Qdirectory_file_name; |
303 | Lisp_Object Qfile_name_directory; | |
304 | Lisp_Object Qfile_name_nondirectory; | |
642ef245 | 305 | Lisp_Object Qunhandled_file_name_directory; |
0bf2eed2 | 306 | Lisp_Object Qfile_name_as_directory; |
32f4334d | 307 | Lisp_Object Qcopy_file; |
a6e6e718 | 308 | Lisp_Object Qmake_directory_internal; |
b272d624 | 309 | Lisp_Object Qmake_directory; |
32f4334d RS |
310 | Lisp_Object Qdelete_directory; |
311 | Lisp_Object Qdelete_file; | |
312 | Lisp_Object Qrename_file; | |
313 | Lisp_Object Qadd_name_to_file; | |
314 | Lisp_Object Qmake_symbolic_link; | |
315 | Lisp_Object Qfile_exists_p; | |
316 | Lisp_Object Qfile_executable_p; | |
317 | Lisp_Object Qfile_readable_p; | |
32f4334d | 318 | Lisp_Object Qfile_writable_p; |
1f8653eb RS |
319 | Lisp_Object Qfile_symlink_p; |
320 | Lisp_Object Qaccess_file; | |
32f4334d | 321 | Lisp_Object Qfile_directory_p; |
adedc71d | 322 | Lisp_Object Qfile_regular_p; |
32f4334d RS |
323 | Lisp_Object Qfile_accessible_directory_p; |
324 | Lisp_Object Qfile_modes; | |
325 | Lisp_Object Qset_file_modes; | |
819da85b | 326 | Lisp_Object Qset_file_times; |
32f4334d RS |
327 | Lisp_Object Qfile_newer_than_file_p; |
328 | Lisp_Object Qinsert_file_contents; | |
329 | Lisp_Object Qwrite_region; | |
330 | Lisp_Object Qverify_visited_file_modtime; | |
3ec46acd | 331 | Lisp_Object Qset_visited_file_modtime; |
32f4334d | 332 | |
49307295 | 333 | DEFUN ("find-file-name-handler", Ffind_file_name_handler, Sfind_file_name_handler, 2, 2, 0, |
8c1a1077 PJ |
334 | doc: /* Return FILENAME's handler function for OPERATION, if it has one. |
335 | Otherwise, return nil. | |
336 | A file name is handled if one of the regular expressions in | |
337 | `file-name-handler-alist' matches it. | |
338 | ||
339 | If OPERATION equals `inhibit-file-name-operation', then we ignore | |
340 | any handlers that are members of `inhibit-file-name-handlers', | |
341 | but we still do run any other handlers. This lets handlers | |
342 | use the standard functions without calling themselves recursively. */) | |
343 | (filename, operation) | |
344 | Lisp_Object filename, operation; | |
32f4334d | 345 | { |
642ef245 | 346 | /* This function must not munge the match data. */ |
204ee271 | 347 | Lisp_Object chain, inhibited_handlers, result; |
8d2ced53 | 348 | int pos = -1; |
642ef245 | 349 | |
204ee271 | 350 | result = Qnil; |
b7826503 | 351 | CHECK_STRING (filename); |
e4432095 | 352 | |
a65970a0 RS |
353 | if (EQ (operation, Vinhibit_file_name_operation)) |
354 | inhibited_handlers = Vinhibit_file_name_handlers; | |
355 | else | |
356 | inhibited_handlers = Qnil; | |
82c2d839 | 357 | |
93c30b5f | 358 | for (chain = Vfile_name_handler_alist; CONSP (chain); |
03699b14 | 359 | chain = XCDR (chain)) |
32f4334d RS |
360 | { |
361 | Lisp_Object elt; | |
03699b14 | 362 | elt = XCAR (chain); |
93c30b5f | 363 | if (CONSP (elt)) |
32f4334d | 364 | { |
f6c9b683 | 365 | Lisp_Object string = XCAR (elt); |
8d2ced53 | 366 | int match_pos; |
f6c9b683 | 367 | Lisp_Object handler = XCDR (elt); |
68780e2a RS |
368 | Lisp_Object operations = Qnil; |
369 | ||
370 | if (SYMBOLP (handler)) | |
371 | operations = Fget (handler, Qoperations); | |
f6c9b683 | 372 | |
8d2ced53 | 373 | if (STRINGP (string) |
f6c9b683 RS |
374 | && (match_pos = fast_string_match (string, filename)) > pos |
375 | && (NILP (operations) || ! NILP (Fmemq (operation, operations)))) | |
a65970a0 | 376 | { |
f6c9b683 | 377 | Lisp_Object tem; |
a65970a0 | 378 | |
03699b14 | 379 | handler = XCDR (elt); |
a65970a0 RS |
380 | tem = Fmemq (handler, inhibited_handlers); |
381 | if (NILP (tem)) | |
8d2ced53 SM |
382 | { |
383 | result = handler; | |
384 | pos = match_pos; | |
385 | } | |
a65970a0 | 386 | } |
32f4334d | 387 | } |
642ef245 JB |
388 | |
389 | QUIT; | |
32f4334d | 390 | } |
8d2ced53 | 391 | return result; |
32f4334d RS |
392 | } |
393 | \f | |
570d7624 | 394 | DEFUN ("file-name-directory", Ffile_name_directory, Sfile_name_directory, |
8c1a1077 PJ |
395 | 1, 1, 0, |
396 | doc: /* Return the directory component in file name FILENAME. | |
397 | Return nil if FILENAME does not include a directory. | |
78379264 | 398 | Otherwise return a directory name. |
7c2fb837 | 399 | Given a Unix syntax file name, returns a string ending in slash. */) |
8c1a1077 | 400 | (filename) |
3b7f6e60 | 401 | Lisp_Object filename; |
570d7624 | 402 | { |
100c44b7 | 403 | #ifndef DOS_NT |
19290c65 | 404 | register const unsigned char *beg; |
100c44b7 EZ |
405 | #else |
406 | register unsigned char *beg; | |
407 | #endif | |
19290c65 | 408 | register const unsigned char *p; |
0bf2eed2 | 409 | Lisp_Object handler; |
570d7624 | 410 | |
b7826503 | 411 | CHECK_STRING (filename); |
570d7624 | 412 | |
0bf2eed2 RS |
413 | /* If the file name has special constructs in it, |
414 | call the corresponding file handler. */ | |
3b7f6e60 | 415 | handler = Ffind_file_name_handler (filename, Qfile_name_directory); |
0bf2eed2 | 416 | if (!NILP (handler)) |
3b7f6e60 | 417 | return call2 (handler, Qfile_name_directory, filename); |
0bf2eed2 | 418 | |
3b7f6e60 | 419 | filename = FILE_SYSTEM_CASE (filename); |
d5db4077 | 420 | beg = SDATA (filename); |
199607e4 RS |
421 | #ifdef DOS_NT |
422 | beg = strcpy (alloca (strlen (beg) + 1), beg); | |
423 | #endif | |
d5db4077 | 424 | p = beg + SBYTES (filename); |
570d7624 | 425 | |
199607e4 | 426 | while (p != beg && !IS_DIRECTORY_SEP (p[-1]) |
199607e4 | 427 | #ifdef DOS_NT |
ba14e174 RS |
428 | /* only recognise drive specifier at the beginning */ |
429 | && !(p[-1] == ':' | |
430 | /* handle the "/:d:foo" and "/:foo" cases correctly */ | |
431 | && ((p == beg + 2 && !IS_DIRECTORY_SEP (*beg)) | |
432 | || (p == beg + 4 && IS_DIRECTORY_SEP (*beg)))) | |
199607e4 | 433 | #endif |
570d7624 JB |
434 | ) p--; |
435 | ||
436 | if (p == beg) | |
437 | return Qnil; | |
5e570b75 | 438 | #ifdef DOS_NT |
4c3c22f3 | 439 | /* Expansion of "c:" to drive and default directory. */ |
ba14e174 | 440 | if (p[-1] == ':') |
4c3c22f3 | 441 | { |
4c3c22f3 | 442 | /* MAXPATHLEN+1 is guaranteed to be enough space for getdefdir. */ |
199607e4 | 443 | unsigned char *res = alloca (MAXPATHLEN + 1); |
ba14e174 RS |
444 | unsigned char *r = res; |
445 | ||
446 | if (p == beg + 4 && IS_DIRECTORY_SEP (*beg) && beg[1] == ':') | |
447 | { | |
448 | strncpy (res, beg, 2); | |
449 | beg += 2; | |
450 | r += 2; | |
451 | } | |
452 | ||
453 | if (getdefdir (toupper (*beg) - 'A' + 1, r)) | |
4c3c22f3 | 454 | { |
199607e4 | 455 | if (!IS_DIRECTORY_SEP (res[strlen (res) - 1])) |
4c3c22f3 RS |
456 | strcat (res, "/"); |
457 | beg = res; | |
458 | p = beg + strlen (beg); | |
459 | } | |
460 | } | |
199607e4 | 461 | CORRECT_DIR_SEPS (beg); |
5e570b75 | 462 | #endif /* DOS_NT */ |
60d67b83 | 463 | |
d7231f93 | 464 | return make_specified_string (beg, -1, p - beg, STRING_MULTIBYTE (filename)); |
570d7624 JB |
465 | } |
466 | ||
60d67b83 RS |
467 | DEFUN ("file-name-nondirectory", Ffile_name_nondirectory, |
468 | Sfile_name_nondirectory, 1, 1, 0, | |
8c1a1077 PJ |
469 | doc: /* Return file name FILENAME sans its directory. |
470 | For example, in a Unix-syntax file name, | |
471 | this is everything after the last slash, | |
472 | or the entire name if it contains no slash. */) | |
473 | (filename) | |
3b7f6e60 | 474 | Lisp_Object filename; |
570d7624 | 475 | { |
19290c65 | 476 | register const unsigned char *beg, *p, *end; |
0bf2eed2 | 477 | Lisp_Object handler; |
570d7624 | 478 | |
b7826503 | 479 | CHECK_STRING (filename); |
570d7624 | 480 | |
0bf2eed2 RS |
481 | /* If the file name has special constructs in it, |
482 | call the corresponding file handler. */ | |
3b7f6e60 | 483 | handler = Ffind_file_name_handler (filename, Qfile_name_nondirectory); |
0bf2eed2 | 484 | if (!NILP (handler)) |
3b7f6e60 | 485 | return call2 (handler, Qfile_name_nondirectory, filename); |
0bf2eed2 | 486 | |
d5db4077 KR |
487 | beg = SDATA (filename); |
488 | end = p = beg + SBYTES (filename); | |
570d7624 | 489 | |
199607e4 | 490 | while (p != beg && !IS_DIRECTORY_SEP (p[-1]) |
199607e4 RS |
491 | #ifdef DOS_NT |
492 | /* only recognise drive specifier at beginning */ | |
ba14e174 RS |
493 | && !(p[-1] == ':' |
494 | /* handle the "/:d:foo" case correctly */ | |
495 | && (p == beg + 2 || (p == beg + 4 && IS_DIRECTORY_SEP (*beg)))) | |
199607e4 | 496 | #endif |
60d67b83 RS |
497 | ) |
498 | p--; | |
570d7624 | 499 | |
d7231f93 | 500 | return make_specified_string (p, -1, end - p, STRING_MULTIBYTE (filename)); |
570d7624 | 501 | } |
642ef245 | 502 | |
60d67b83 RS |
503 | DEFUN ("unhandled-file-name-directory", Funhandled_file_name_directory, |
504 | Sunhandled_file_name_directory, 1, 1, 0, | |
8c1a1077 PJ |
505 | doc: /* Return a directly usable directory name somehow associated with FILENAME. |
506 | A `directly usable' directory name is one that may be used without the | |
507 | intervention of any file handler. | |
508 | If FILENAME is a directly usable file itself, return | |
509 | \(file-name-directory FILENAME). | |
ca319910 SM |
510 | If FILENAME refers to a file which is not accessible from a local process, |
511 | then this should return nil. | |
8c1a1077 PJ |
512 | The `call-process' and `start-process' functions use this function to |
513 | get a current directory to run processes in. */) | |
514 | (filename) | |
515 | Lisp_Object filename; | |
642ef245 JB |
516 | { |
517 | Lisp_Object handler; | |
518 | ||
519 | /* If the file name has special constructs in it, | |
520 | call the corresponding file handler. */ | |
49307295 | 521 | handler = Ffind_file_name_handler (filename, Qunhandled_file_name_directory); |
642ef245 JB |
522 | if (!NILP (handler)) |
523 | return call2 (handler, Qunhandled_file_name_directory, filename); | |
524 | ||
525 | return Ffile_name_directory (filename); | |
526 | } | |
527 | ||
570d7624 JB |
528 | \f |
529 | char * | |
530 | file_name_as_directory (out, in) | |
531 | char *out, *in; | |
532 | { | |
533 | int size = strlen (in) - 1; | |
534 | ||
535 | strcpy (out, in); | |
536 | ||
8aa3a244 RS |
537 | if (size < 0) |
538 | { | |
154a307d KH |
539 | out[0] = '.'; |
540 | out[1] = '/'; | |
541 | out[2] = 0; | |
8aa3a244 RS |
542 | return out; |
543 | } | |
544 | ||
570d7624 | 545 | /* For Unix syntax, Append a slash if necessary */ |
199607e4 | 546 | if (!IS_DIRECTORY_SEP (out[size])) |
5e570b75 | 547 | { |
8cfd6446 JB |
548 | /* Cannot use DIRECTORY_SEP, which could have any value */ |
549 | out[size + 1] = '/'; | |
5e570b75 RS |
550 | out[size + 2] = '\0'; |
551 | } | |
199607e4 RS |
552 | #ifdef DOS_NT |
553 | CORRECT_DIR_SEPS (out); | |
554 | #endif | |
570d7624 JB |
555 | return out; |
556 | } | |
557 | ||
558 | DEFUN ("file-name-as-directory", Ffile_name_as_directory, | |
559 | Sfile_name_as_directory, 1, 1, 0, | |
0dac4f85 | 560 | doc: /* Return a string representing the file name FILE interpreted as a directory. |
8c1a1077 PJ |
561 | This operation exists because a directory is also a file, but its name as |
562 | a directory is different from its name as a file. | |
563 | The result can be used as the value of `default-directory' | |
564 | or passed as second argument to `expand-file-name'. | |
7c2fb837 | 565 | For a Unix-syntax file name, just appends a slash. */) |
8c1a1077 | 566 | (file) |
570d7624 JB |
567 | Lisp_Object file; |
568 | { | |
569 | char *buf; | |
0bf2eed2 | 570 | Lisp_Object handler; |
570d7624 | 571 | |
b7826503 | 572 | CHECK_STRING (file); |
265a9e55 | 573 | if (NILP (file)) |
570d7624 | 574 | return Qnil; |
0bf2eed2 RS |
575 | |
576 | /* If the file name has special constructs in it, | |
577 | call the corresponding file handler. */ | |
49307295 | 578 | handler = Ffind_file_name_handler (file, Qfile_name_as_directory); |
0bf2eed2 RS |
579 | if (!NILP (handler)) |
580 | return call2 (handler, Qfile_name_as_directory, file); | |
581 | ||
d5db4077 | 582 | buf = (char *) alloca (SBYTES (file) + 10); |
d7231f93 KH |
583 | file_name_as_directory (buf, SDATA (file)); |
584 | return make_specified_string (buf, -1, strlen (buf), | |
585 | STRING_MULTIBYTE (file)); | |
570d7624 JB |
586 | } |
587 | \f | |
588 | /* | |
589 | * Convert from directory name to filename. | |
199607e4 | 590 | * On UNIX, it's simple: just make sure there isn't a terminating / |
570d7624 JB |
591 | |
592 | * Value is nonzero if the string output is different from the input. | |
593 | */ | |
594 | ||
dfcf069d | 595 | int |
570d7624 JB |
596 | directory_file_name (src, dst) |
597 | char *src, *dst; | |
598 | { | |
599 | long slen; | |
570d7624 JB |
600 | |
601 | slen = strlen (src); | |
7c2fb837 | 602 | |
570d7624 JB |
603 | /* Process as Unix format: just remove any final slash. |
604 | But leave "/" unchanged; do not change it to "". */ | |
605 | strcpy (dst, src); | |
199607e4 | 606 | if (slen > 1 |
5e570b75 | 607 | && IS_DIRECTORY_SEP (dst[slen - 1]) |
4592782e RS |
608 | #ifdef DOS_NT |
609 | && !IS_ANY_SEP (dst[slen - 2]) | |
610 | #endif | |
611 | ) | |
570d7624 | 612 | dst[slen - 1] = 0; |
199607e4 RS |
613 | #ifdef DOS_NT |
614 | CORRECT_DIR_SEPS (dst); | |
125feee8 | 615 | #endif |
570d7624 JB |
616 | return 1; |
617 | } | |
618 | ||
619 | DEFUN ("directory-file-name", Fdirectory_file_name, Sdirectory_file_name, | |
8c1a1077 PJ |
620 | 1, 1, 0, |
621 | doc: /* Returns the file name of the directory named DIRECTORY. | |
622 | This is the name of the file that holds the data for the directory DIRECTORY. | |
623 | This operation exists because a directory is also a file, but its name as | |
624 | a directory is different from its name as a file. | |
7c2fb837 | 625 | In Unix-syntax, this function just removes the final slash. */) |
8c1a1077 | 626 | (directory) |
570d7624 JB |
627 | Lisp_Object directory; |
628 | { | |
629 | char *buf; | |
0bf2eed2 | 630 | Lisp_Object handler; |
570d7624 | 631 | |
b7826503 | 632 | CHECK_STRING (directory); |
570d7624 | 633 | |
265a9e55 | 634 | if (NILP (directory)) |
570d7624 | 635 | return Qnil; |
0bf2eed2 RS |
636 | |
637 | /* If the file name has special constructs in it, | |
638 | call the corresponding file handler. */ | |
49307295 | 639 | handler = Ffind_file_name_handler (directory, Qdirectory_file_name); |
0bf2eed2 RS |
640 | if (!NILP (handler)) |
641 | return call2 (handler, Qdirectory_file_name, directory); | |
642 | ||
d5db4077 | 643 | buf = (char *) alloca (SBYTES (directory) + 20); |
d5db4077 | 644 | directory_file_name (SDATA (directory), buf); |
d7231f93 KH |
645 | return make_specified_string (buf, -1, strlen (buf), |
646 | STRING_MULTIBYTE (directory)); | |
570d7624 JB |
647 | } |
648 | ||
3ce839e4 RS |
649 | static char make_temp_name_tbl[64] = |
650 | { | |
651 | 'A','B','C','D','E','F','G','H', | |
652 | 'I','J','K','L','M','N','O','P', | |
653 | 'Q','R','S','T','U','V','W','X', | |
654 | 'Y','Z','a','b','c','d','e','f', | |
655 | 'g','h','i','j','k','l','m','n', | |
656 | 'o','p','q','r','s','t','u','v', | |
657 | 'w','x','y','z','0','1','2','3', | |
658 | '4','5','6','7','8','9','-','_' | |
659 | }; | |
cb613bb8 | 660 | |
3ce839e4 RS |
661 | static unsigned make_temp_name_count, make_temp_name_count_initialized_p; |
662 | ||
cb613bb8 | 663 | /* Value is a temporary file name starting with PREFIX, a string. |
efdc16c9 | 664 | |
cb613bb8 GM |
665 | The Emacs process number forms part of the result, so there is |
666 | no danger of generating a name being used by another process. | |
667 | In addition, this function makes an attempt to choose a name | |
668 | which has no existing file. To make this work, PREFIX should be | |
669 | an absolute file name. | |
efdc16c9 | 670 | |
cb613bb8 GM |
671 | BASE64_P non-zero means add the pid as 3 characters in base64 |
672 | encoding. In this case, 6 characters will be added to PREFIX to | |
673 | form the file name. Otherwise, if Emacs is running on a system | |
674 | with long file names, add the pid as a decimal number. | |
675 | ||
676 | This function signals an error if no unique file name could be | |
677 | generated. */ | |
678 | ||
679 | Lisp_Object | |
680 | make_temp_name (prefix, base64_p) | |
570d7624 | 681 | Lisp_Object prefix; |
cb613bb8 | 682 | int base64_p; |
570d7624 JB |
683 | { |
684 | Lisp_Object val; | |
0cedd530 | 685 | int len, clen; |
3ce839e4 RS |
686 | int pid; |
687 | unsigned char *p, *data; | |
688 | char pidbuf[20]; | |
689 | int pidlen; | |
efdc16c9 | 690 | |
b7826503 | 691 | CHECK_STRING (prefix); |
3ce839e4 RS |
692 | |
693 | /* VAL is created by adding 6 characters to PREFIX. The first | |
694 | three are the PID of this process, in base 64, and the second | |
695 | three are incremented if the file already exists. This ensures | |
696 | 262144 unique file names per PID per PREFIX. */ | |
697 | ||
698 | pid = (int) getpid (); | |
699 | ||
cb613bb8 GM |
700 | if (base64_p) |
701 | { | |
702 | pidbuf[0] = make_temp_name_tbl[pid & 63], pid >>= 6; | |
703 | pidbuf[1] = make_temp_name_tbl[pid & 63], pid >>= 6; | |
704 | pidbuf[2] = make_temp_name_tbl[pid & 63], pid >>= 6; | |
705 | pidlen = 3; | |
706 | } | |
707 | else | |
708 | { | |
3ce839e4 | 709 | #ifdef HAVE_LONG_FILE_NAMES |
cb613bb8 GM |
710 | sprintf (pidbuf, "%d", pid); |
711 | pidlen = strlen (pidbuf); | |
3a3bfb18 | 712 | #else |
cb613bb8 GM |
713 | pidbuf[0] = make_temp_name_tbl[pid & 63], pid >>= 6; |
714 | pidbuf[1] = make_temp_name_tbl[pid & 63], pid >>= 6; | |
715 | pidbuf[2] = make_temp_name_tbl[pid & 63], pid >>= 6; | |
716 | pidlen = 3; | |
3ce839e4 | 717 | #endif |
cb613bb8 | 718 | } |
efdc16c9 | 719 | |
0cedd530 SM |
720 | len = SBYTES (prefix); clen = SCHARS (prefix); |
721 | val = make_uninit_multibyte_string (clen + 3 + pidlen, len + 3 + pidlen); | |
722 | if (!STRING_MULTIBYTE (prefix)) | |
723 | STRING_SET_UNIBYTE (val); | |
d5db4077 KR |
724 | data = SDATA (val); |
725 | bcopy(SDATA (prefix), data, len); | |
3ce839e4 RS |
726 | p = data + len; |
727 | ||
728 | bcopy (pidbuf, p, pidlen); | |
729 | p += pidlen; | |
730 | ||
731 | /* Here we try to minimize useless stat'ing when this function is | |
732 | invoked many times successively with the same PREFIX. We achieve | |
733 | this by initializing count to a random value, and incrementing it | |
f6a492a9 RS |
734 | afterwards. |
735 | ||
736 | We don't want make-temp-name to be called while dumping, | |
737 | because then make_temp_name_count_initialized_p would get set | |
738 | and then make_temp_name_count would not be set when Emacs starts. */ | |
739 | ||
3ce839e4 RS |
740 | if (!make_temp_name_count_initialized_p) |
741 | { | |
742 | make_temp_name_count = (unsigned) time (NULL); | |
743 | make_temp_name_count_initialized_p = 1; | |
744 | } | |
745 | ||
746 | while (1) | |
747 | { | |
748 | struct stat ignored; | |
8a7777fc | 749 | unsigned num = make_temp_name_count; |
3ce839e4 RS |
750 | |
751 | p[0] = make_temp_name_tbl[num & 63], num >>= 6; | |
752 | p[1] = make_temp_name_tbl[num & 63], num >>= 6; | |
753 | p[2] = make_temp_name_tbl[num & 63], num >>= 6; | |
754 | ||
8a7777fc RS |
755 | /* Poor man's congruential RN generator. Replace with |
756 | ++make_temp_name_count for debugging. */ | |
757 | make_temp_name_count += 25229; | |
758 | make_temp_name_count %= 225307; | |
759 | ||
3ce839e4 RS |
760 | if (stat (data, &ignored) < 0) |
761 | { | |
762 | /* We want to return only if errno is ENOENT. */ | |
763 | if (errno == ENOENT) | |
764 | return val; | |
765 | else | |
766 | /* The error here is dubious, but there is little else we | |
767 | can do. The alternatives are to return nil, which is | |
768 | as bad as (and in many cases worse than) throwing the | |
769 | error, or to ignore the error, which will likely result | |
8a7777fc RS |
770 | in looping through 225307 stat's, which is not only |
771 | dog-slow, but also useless since it will fallback to | |
772 | the errow below, anyway. */ | |
9869bb0b | 773 | report_file_error ("Cannot create temporary name for prefix", |
3ce839e4 RS |
774 | Fcons (prefix, Qnil)); |
775 | /* not reached */ | |
776 | } | |
777 | } | |
778 | ||
779 | error ("Cannot create temporary name for prefix `%s'", | |
d5db4077 | 780 | SDATA (prefix)); |
3ce839e4 | 781 | return Qnil; |
570d7624 | 782 | } |
3ce839e4 | 783 | |
cb613bb8 GM |
784 | |
785 | DEFUN ("make-temp-name", Fmake_temp_name, Smake_temp_name, 1, 1, 0, | |
8c1a1077 PJ |
786 | doc: /* Generate temporary file name (string) starting with PREFIX (a string). |
787 | The Emacs process number forms part of the result, | |
788 | so there is no danger of generating a name being used by another process. | |
789 | ||
790 | In addition, this function makes an attempt to choose a name | |
791 | which has no existing file. To make this work, | |
792 | PREFIX should be an absolute file name. | |
793 | ||
794 | There is a race condition between calling `make-temp-name' and creating the | |
795 | file which opens all kinds of security holes. For that reason, you should | |
f9e6f049 RS |
796 | probably use `make-temp-file' instead, except in three circumstances: |
797 | ||
798 | * If you are creating the file in the user's home directory. | |
799 | * If you are creating a directory rather than an ordinary file. | |
800 | * If you are taking special precautions as `make-temp-file' does. */) | |
8c1a1077 | 801 | (prefix) |
cb613bb8 GM |
802 | Lisp_Object prefix; |
803 | { | |
804 | return make_temp_name (prefix, 0); | |
805 | } | |
806 | ||
807 | ||
570d7624 JB |
808 | \f |
809 | DEFUN ("expand-file-name", Fexpand_file_name, Sexpand_file_name, 1, 2, 0, | |
8c1a1077 PJ |
810 | doc: /* Convert filename NAME to absolute, and canonicalize it. |
811 | Second arg DEFAULT-DIRECTORY is directory to start with if NAME is relative | |
78379264 | 812 | \(does not start with slash or tilde); if DEFAULT-DIRECTORY is nil or missing, |
a4e03fe5 | 813 | the current buffer's value of `default-directory' is used. |
8c1a1077 PJ |
814 | File name components that are `.' are removed, and |
815 | so are file name components followed by `..', along with the `..' itself; | |
816 | note that these simplifications are done without checking the resulting | |
817 | file names in the file system. | |
818 | An initial `~/' expands to your home directory. | |
819 | An initial `~USER/' expands to USER's home directory. | |
820 | See also the function `substitute-in-file-name'. */) | |
821 | (name, default_directory) | |
3b7f6e60 | 822 | Lisp_Object name, default_directory; |
570d7624 | 823 | { |
5b5a2ea1 SM |
824 | /* These point to SDATA and need to be careful with string-relocation |
825 | during GC (via DECODE_FILE). */ | |
826 | unsigned char *nm, *newdir; | |
8ee085a4 | 827 | int nm_in_name; |
5b5a2ea1 SM |
828 | /* This should only point to alloca'd data. */ |
829 | unsigned char *target; | |
199607e4 | 830 | |
570d7624 | 831 | int tlen; |
570d7624 | 832 | struct passwd *pw; |
5e570b75 | 833 | #ifdef DOS_NT |
199607e4 | 834 | int drive = 0; |
9a1dc3be | 835 | int collapse_newdir = 1; |
f0f95d31 | 836 | int is_escaped = 0; |
5e570b75 | 837 | #endif /* DOS_NT */ |
199607e4 | 838 | int length; |
beb402de | 839 | Lisp_Object handler, result; |
2b046a72 | 840 | int multibyte; |
9c06a1f3 | 841 | Lisp_Object hdir; |
199607e4 | 842 | |
b7826503 | 843 | CHECK_STRING (name); |
570d7624 | 844 | |
0bf2eed2 RS |
845 | /* If the file name has special constructs in it, |
846 | call the corresponding file handler. */ | |
49307295 | 847 | handler = Ffind_file_name_handler (name, Qexpand_file_name); |
0bf2eed2 | 848 | if (!NILP (handler)) |
3b7f6e60 | 849 | return call3 (handler, Qexpand_file_name, name, default_directory); |
58fc9587 | 850 | |
3b7f6e60 EN |
851 | /* Use the buffer's default-directory if DEFAULT_DIRECTORY is omitted. */ |
852 | if (NILP (default_directory)) | |
853 | default_directory = current_buffer->directory; | |
82330e7f | 854 | if (! STRINGP (default_directory)) |
dd693537 EZ |
855 | { |
856 | #ifdef DOS_NT | |
857 | /* "/" is not considered a root directory on DOS_NT, so using "/" | |
858 | here causes an infinite recursion in, e.g., the following: | |
859 | ||
860 | (let (default-directory) | |
861 | (expand-file-name "a")) | |
862 | ||
863 | To avoid this, we set default_directory to the root of the | |
864 | current drive. */ | |
865 | extern char *emacs_root_dir (void); | |
866 | ||
867 | default_directory = build_string (emacs_root_dir ()); | |
868 | #else | |
869 | default_directory = build_string ("/"); | |
870 | #endif | |
871 | } | |
58fc9587 | 872 | |
3b7f6e60 | 873 | if (!NILP (default_directory)) |
273e0829 | 874 | { |
3b7f6e60 | 875 | handler = Ffind_file_name_handler (default_directory, Qexpand_file_name); |
273e0829 | 876 | if (!NILP (handler)) |
3b7f6e60 | 877 | return call3 (handler, Qexpand_file_name, name, default_directory); |
273e0829 | 878 | } |
0bf2eed2 | 879 | |
5b5a2ea1 SM |
880 | { |
881 | unsigned char *o = SDATA (default_directory); | |
882 | ||
883 | /* Make sure DEFAULT_DIRECTORY is properly expanded. | |
884 | It would be better to do this down below where we actually use | |
885 | default_directory. Unfortunately, calling Fexpand_file_name recursively | |
886 | could invoke GC, and the strings might be relocated. This would | |
887 | be annoying because we have pointers into strings lying around | |
888 | that would need adjusting, and people would add new pointers to | |
889 | the code and forget to adjust them, resulting in intermittent bugs. | |
890 | Putting this call here avoids all that crud. | |
891 | ||
892 | The EQ test avoids infinite recursion. */ | |
893 | if (! NILP (default_directory) && !EQ (default_directory, name) | |
894 | /* Save time in some common cases - as long as default_directory | |
895 | is not relative, it can be canonicalized with name below (if it | |
896 | is needed at all) without requiring it to be expanded now. */ | |
01937013 | 897 | #ifdef DOS_NT |
5b5a2ea1 SM |
898 | /* Detect MSDOS file names with drive specifiers. */ |
899 | && ! (IS_DRIVE (o[0]) && IS_DEVICE_SEP (o[1]) | |
900 | && IS_DIRECTORY_SEP (o[2])) | |
199607e4 | 901 | #ifdef WINDOWSNT |
5b5a2ea1 SM |
902 | /* Detect Windows file names in UNC format. */ |
903 | && ! (IS_DIRECTORY_SEP (o[0]) && IS_DIRECTORY_SEP (o[1])) | |
01937013 | 904 | #endif |
199607e4 RS |
905 | #else /* not DOS_NT */ |
906 | /* Detect Unix absolute file names (/... alone is not absolute on | |
907 | DOS or Windows). */ | |
5b5a2ea1 | 908 | && ! (IS_DIRECTORY_SEP (o[0])) |
199607e4 | 909 | #endif /* not DOS_NT */ |
5b5a2ea1 SM |
910 | ) |
911 | { | |
912 | struct gcpro gcpro1; | |
f14b1c68 | 913 | |
5b5a2ea1 SM |
914 | GCPRO1 (name); |
915 | default_directory = Fexpand_file_name (default_directory, Qnil); | |
916 | UNGCPRO; | |
917 | } | |
918 | } | |
4c3c22f3 | 919 | name = FILE_SYSTEM_CASE (name); |
2b046a72 | 920 | multibyte = STRING_MULTIBYTE (name); |
6d060996 KH |
921 | if (multibyte != STRING_MULTIBYTE (default_directory)) |
922 | { | |
923 | if (multibyte) | |
924 | default_directory = string_to_multibyte (default_directory); | |
925 | else | |
926 | { | |
927 | name = string_to_multibyte (name); | |
928 | multibyte = 1; | |
929 | } | |
930 | } | |
931 | ||
932 | nm = SDATA (name); | |
8ee085a4 | 933 | nm_in_name = 1; |
a5a1cc06 | 934 | |
5e570b75 | 935 | #ifdef DOS_NT |
199607e4 RS |
936 | /* We will force directory separators to be either all \ or /, so make |
937 | a local copy to modify, even if there ends up being no change. */ | |
938 | nm = strcpy (alloca (strlen (nm) + 1), nm); | |
8ee085a4 | 939 | nm_in_name = 0; |
199607e4 | 940 | |
f0f95d31 RS |
941 | /* Note if special escape prefix is present, but remove for now. */ |
942 | if (nm[0] == '/' && nm[1] == ':') | |
943 | { | |
944 | is_escaped = 1; | |
945 | nm += 2; | |
946 | } | |
947 | ||
199607e4 | 948 | /* Find and remove drive specifier if present; this makes nm absolute |
f0f95d31 RS |
949 | even if the rest of the name appears to be relative. Only look for |
950 | drive specifier at the beginning. */ | |
951 | if (IS_DRIVE (nm[0]) && IS_DEVICE_SEP (nm[1])) | |
952 | { | |
953 | drive = nm[0]; | |
954 | nm += 2; | |
955 | } | |
bb1ff1f4 GV |
956 | |
957 | #ifdef WINDOWSNT | |
958 | /* If we see "c://somedir", we want to strip the first slash after the | |
959 | colon when stripping the drive letter. Otherwise, this expands to | |
960 | "//somedir". */ | |
961 | if (drive && IS_DIRECTORY_SEP (nm[0]) && IS_DIRECTORY_SEP (nm[1])) | |
962 | nm++; | |
4c3c22f3 | 963 | |
199607e4 RS |
964 | /* Discard any previous drive specifier if nm is now in UNC format. */ |
965 | if (IS_DIRECTORY_SEP (nm[0]) && IS_DIRECTORY_SEP (nm[1])) | |
966 | { | |
967 | drive = 0; | |
968 | } | |
5b5a2ea1 SM |
969 | #endif /* WINDOWSNT */ |
970 | #endif /* DOS_NT */ | |
199607e4 | 971 | |
214378ec GM |
972 | /* If nm is absolute, look for `/./' or `/../' or `//''sequences; if |
973 | none are found, we can probably return right away. We will avoid | |
974 | allocating a new string if name is already fully expanded. */ | |
570d7624 | 975 | if ( |
5e570b75 | 976 | IS_DIRECTORY_SEP (nm[0]) |
199607e4 | 977 | #ifdef MSDOS |
f0f95d31 | 978 | && drive && !is_escaped |
199607e4 RS |
979 | #endif |
980 | #ifdef WINDOWSNT | |
f0f95d31 | 981 | && (drive || IS_DIRECTORY_SEP (nm[1])) && !is_escaped |
199607e4 | 982 | #endif |
570d7624 JB |
983 | ) |
984 | { | |
f14b1c68 JB |
985 | /* If it turns out that the filename we want to return is just a |
986 | suffix of FILENAME, we don't need to go through and edit | |
987 | things; we just need to construct a new string using data | |
988 | starting at the middle of FILENAME. If we set lose to a | |
989 | non-zero value, that means we've discovered that we can't do | |
990 | that cool trick. */ | |
991 | int lose = 0; | |
5b5a2ea1 | 992 | unsigned char *p = nm; |
f14b1c68 | 993 | |
570d7624 JB |
994 | while (*p) |
995 | { | |
199607e4 | 996 | /* Since we know the name is absolute, we can assume that each |
c77d647e JB |
997 | element starts with a "/". */ |
998 | ||
c77d647e | 999 | /* "." and ".." are hairy. */ |
5e570b75 | 1000 | if (IS_DIRECTORY_SEP (p[0]) |
c77d647e | 1001 | && p[1] == '.' |
5e570b75 | 1002 | && (IS_DIRECTORY_SEP (p[2]) |
c77d647e | 1003 | || p[2] == 0 |
5e570b75 | 1004 | || (p[2] == '.' && (IS_DIRECTORY_SEP (p[3]) |
c77d647e | 1005 | || p[3] == 0)))) |
570d7624 | 1006 | lose = 1; |
214378ec GM |
1007 | /* We want to replace multiple `/' in a row with a single |
1008 | slash. */ | |
1009 | else if (p > nm | |
1010 | && IS_DIRECTORY_SEP (p[0]) | |
1011 | && IS_DIRECTORY_SEP (p[1])) | |
1012 | lose = 1; | |
570d7624 JB |
1013 | p++; |
1014 | } | |
1015 | if (!lose) | |
1016 | { | |
199607e4 RS |
1017 | #ifdef DOS_NT |
1018 | /* Make sure directories are all separated with / or \ as | |
1019 | desired, but avoid allocation of a new string when not | |
1020 | required. */ | |
1021 | CORRECT_DIR_SEPS (nm); | |
1022 | #ifdef WINDOWSNT | |
1023 | if (IS_DIRECTORY_SEP (nm[1])) | |
1024 | { | |
d5db4077 | 1025 | if (strcmp (nm, SDATA (name)) != 0) |
2b046a72 | 1026 | name = make_specified_string (nm, -1, strlen (nm), multibyte); |
199607e4 RS |
1027 | } |
1028 | else | |
1029 | #endif | |
1030 | /* drive must be set, so this is okay */ | |
d5db4077 | 1031 | if (strcmp (nm - 2, SDATA (name)) != 0) |
199607e4 | 1032 | { |
3f817c73 KH |
1033 | char temp[] = " :"; |
1034 | ||
2b046a72 | 1035 | name = make_specified_string (nm, -1, p - nm, multibyte); |
3f817c73 KH |
1036 | temp[0] = DRIVE_LETTER (drive); |
1037 | name = concat2 (build_string (temp), name); | |
199607e4 RS |
1038 | } |
1039 | return name; | |
1040 | #else /* not DOS_NT */ | |
d5db4077 | 1041 | if (nm == SDATA (name)) |
570d7624 | 1042 | return name; |
2b046a72 | 1043 | return make_specified_string (nm, -1, strlen (nm), multibyte); |
5e570b75 | 1044 | #endif /* not DOS_NT */ |
570d7624 JB |
1045 | } |
1046 | } | |
1047 | ||
199607e4 RS |
1048 | /* At this point, nm might or might not be an absolute file name. We |
1049 | need to expand ~ or ~user if present, otherwise prefix nm with | |
1050 | default_directory if nm is not absolute, and finally collapse /./ | |
1051 | and /foo/../ sequences. | |
1052 | ||
1053 | We set newdir to be the appropriate prefix if one is needed: | |
1054 | - the relevant user directory if nm starts with ~ or ~user | |
1055 | - the specified drive's working dir (DOS/NT only) if nm does not | |
1056 | start with / | |
1057 | - the value of default_directory. | |
1058 | ||
1059 | Note that these prefixes are not guaranteed to be absolute (except | |
1060 | for the working dir of a drive). Therefore, to ensure we always | |
1061 | return an absolute name, if the final prefix is not absolute we | |
1062 | append it to the current working directory. */ | |
570d7624 JB |
1063 | |
1064 | newdir = 0; | |
1065 | ||
1066 | if (nm[0] == '~') /* prefix ~ */ | |
c77d647e | 1067 | { |
5e570b75 | 1068 | if (IS_DIRECTORY_SEP (nm[1]) |
c77d647e JB |
1069 | || nm[1] == 0) /* ~ by itself */ |
1070 | { | |
6d557778 EZ |
1071 | Lisp_Object tem; |
1072 | ||
c77d647e JB |
1073 | if (!(newdir = (unsigned char *) egetenv ("HOME"))) |
1074 | newdir = (unsigned char *) ""; | |
199607e4 | 1075 | nm++; |
6d557778 EZ |
1076 | /* egetenv may return a unibyte string, which will bite us since |
1077 | we expect the directory to be multibyte. */ | |
9c06a1f3 EZ |
1078 | tem = build_string (newdir); |
1079 | if (!STRING_MULTIBYTE (tem)) | |
1080 | { | |
5b5a2ea1 SM |
1081 | /* FIXME: DECODE_FILE may GC, which may move SDATA(name), |
1082 | after which `nm' won't point to the right place any more. */ | |
1083 | int offset = nm - SDATA (name); | |
9c06a1f3 EZ |
1084 | hdir = DECODE_FILE (tem); |
1085 | newdir = SDATA (hdir); | |
8ee085a4 | 1086 | if (nm_in_name) |
5b5a2ea1 | 1087 | nm = SDATA (name) + offset; |
9c06a1f3 | 1088 | } |
5e570b75 | 1089 | #ifdef DOS_NT |
9a1dc3be | 1090 | collapse_newdir = 0; |
4c3c22f3 | 1091 | #endif |
c77d647e JB |
1092 | } |
1093 | else /* ~user/filename */ | |
1094 | { | |
5b5a2ea1 | 1095 | unsigned char *o, *p; |
7c2fb837 | 1096 | for (p = nm; *p && (!IS_DIRECTORY_SEP (*p)); p++); |
5b5a2ea1 | 1097 | o = alloca (p - nm + 1); |
c77d647e JB |
1098 | bcopy ((char *) nm, o, p - nm); |
1099 | o [p - nm] = 0; | |
1100 | ||
67c08d6c | 1101 | BLOCK_INPUT; |
c77d647e | 1102 | pw = (struct passwd *) getpwnam (o + 1); |
67c08d6c | 1103 | UNBLOCK_INPUT; |
c77d647e JB |
1104 | if (pw) |
1105 | { | |
1106 | newdir = (unsigned char *) pw -> pw_dir; | |
c77d647e | 1107 | nm = p; |
199607e4 | 1108 | #ifdef DOS_NT |
9a1dc3be | 1109 | collapse_newdir = 0; |
199607e4 | 1110 | #endif |
c77d647e | 1111 | } |
e5d77022 | 1112 | |
c77d647e JB |
1113 | /* If we don't find a user of that name, leave the name |
1114 | unchanged; don't move nm forward to p. */ | |
1115 | } | |
1116 | } | |
570d7624 | 1117 | |
5e570b75 | 1118 | #ifdef DOS_NT |
199607e4 RS |
1119 | /* On DOS and Windows, nm is absolute if a drive name was specified; |
1120 | use the drive's current directory as the prefix if needed. */ | |
1121 | if (!newdir && drive) | |
1122 | { | |
1123 | /* Get default directory if needed to make nm absolute. */ | |
1124 | if (!IS_DIRECTORY_SEP (nm[0])) | |
1125 | { | |
1126 | newdir = alloca (MAXPATHLEN + 1); | |
1127 | if (!getdefdir (toupper (drive) - 'A' + 1, newdir)) | |
1128 | newdir = NULL; | |
1129 | } | |
1130 | if (!newdir) | |
1131 | { | |
1132 | /* Either nm starts with /, or drive isn't mounted. */ | |
1133 | newdir = alloca (4); | |
f94988a7 | 1134 | newdir[0] = DRIVE_LETTER (drive); |
199607e4 RS |
1135 | newdir[1] = ':'; |
1136 | newdir[2] = '/'; | |
1137 | newdir[3] = 0; | |
1138 | } | |
1139 | } | |
5e570b75 | 1140 | #endif /* DOS_NT */ |
199607e4 RS |
1141 | |
1142 | /* Finally, if no prefix has been specified and nm is not absolute, | |
1143 | then it must be expanded relative to default_directory. */ | |
1144 | ||
34097368 | 1145 | if (1 |
199607e4 RS |
1146 | #ifndef DOS_NT |
1147 | /* /... alone is not absolute on DOS and Windows. */ | |
34097368 | 1148 | && !IS_DIRECTORY_SEP (nm[0]) |
199607e4 RS |
1149 | #endif |
1150 | #ifdef WINDOWSNT | |
34097368 | 1151 | && !(IS_DIRECTORY_SEP (nm[0]) && IS_DIRECTORY_SEP (nm[1])) |
199607e4 | 1152 | #endif |
570d7624 JB |
1153 | && !newdir) |
1154 | { | |
d5db4077 | 1155 | newdir = SDATA (default_directory); |
f0f95d31 RS |
1156 | #ifdef DOS_NT |
1157 | /* Note if special escape prefix is present, but remove for now. */ | |
1158 | if (newdir[0] == '/' && newdir[1] == ':') | |
1159 | { | |
1160 | is_escaped = 1; | |
1161 | newdir += 2; | |
1162 | } | |
1163 | #endif | |
570d7624 JB |
1164 | } |
1165 | ||
5e570b75 | 1166 | #ifdef DOS_NT |
199607e4 RS |
1167 | if (newdir) |
1168 | { | |
1169 | /* First ensure newdir is an absolute name. */ | |
1170 | if ( | |
1171 | /* Detect MSDOS file names with drive specifiers. */ | |
1172 | ! (IS_DRIVE (newdir[0]) | |
1173 | && IS_DEVICE_SEP (newdir[1]) && IS_DIRECTORY_SEP (newdir[2])) | |
1174 | #ifdef WINDOWSNT | |
1175 | /* Detect Windows file names in UNC format. */ | |
1176 | && ! (IS_DIRECTORY_SEP (newdir[0]) && IS_DIRECTORY_SEP (newdir[1])) | |
1177 | #endif | |
1178 | ) | |
1179 | { | |
1180 | /* Effectively, let newdir be (expand-file-name newdir cwd). | |
1181 | Because of the admonition against calling expand-file-name | |
1182 | when we have pointers into lisp strings, we accomplish this | |
1183 | indirectly by prepending newdir to nm if necessary, and using | |
1184 | cwd (or the wd of newdir's drive) as the new newdir. */ | |
1185 | ||
c70a4df6 | 1186 | if (IS_DRIVE (newdir[0]) && IS_DEVICE_SEP (newdir[1])) |
199607e4 RS |
1187 | { |
1188 | drive = newdir[0]; | |
1189 | newdir += 2; | |
1190 | } | |
1191 | if (!IS_DIRECTORY_SEP (nm[0])) | |
1192 | { | |
1193 | char * tmp = alloca (strlen (newdir) + strlen (nm) + 2); | |
1194 | file_name_as_directory (tmp, newdir); | |
1195 | strcat (tmp, nm); | |
1196 | nm = tmp; | |
1197 | } | |
1198 | newdir = alloca (MAXPATHLEN + 1); | |
1199 | if (drive) | |
1200 | { | |
1201 | if (!getdefdir (toupper (drive) - 'A' + 1, newdir)) | |
1202 | newdir = "/"; | |
1203 | } | |
1204 | else | |
1205 | getwd (newdir); | |
1206 | } | |
1207 | ||
1208 | /* Strip off drive name from prefix, if present. */ | |
c70a4df6 | 1209 | if (IS_DRIVE (newdir[0]) && IS_DEVICE_SEP (newdir[1])) |
199607e4 RS |
1210 | { |
1211 | drive = newdir[0]; | |
1212 | newdir += 2; | |
1213 | } | |
1214 | ||
1215 | /* Keep only a prefix from newdir if nm starts with slash | |
82330e7f | 1216 | (//server/share for UNC, nothing otherwise). */ |
9a1dc3be | 1217 | if (IS_DIRECTORY_SEP (nm[0]) && collapse_newdir) |
199607e4 RS |
1218 | { |
1219 | #ifdef WINDOWSNT | |
1220 | if (IS_DIRECTORY_SEP (newdir[0]) && IS_DIRECTORY_SEP (newdir[1])) | |
1221 | { | |
f5acc071 | 1222 | unsigned char *p; |
199607e4 RS |
1223 | newdir = strcpy (alloca (strlen (newdir) + 1), newdir); |
1224 | p = newdir + 2; | |
1225 | while (*p && !IS_DIRECTORY_SEP (*p)) p++; | |
1226 | p++; | |
1227 | while (*p && !IS_DIRECTORY_SEP (*p)) p++; | |
1228 | *p = 0; | |
1229 | } | |
1230 | else | |
1231 | #endif | |
1232 | newdir = ""; | |
1233 | } | |
1234 | } | |
5e570b75 | 1235 | #endif /* DOS_NT */ |
199607e4 RS |
1236 | |
1237 | if (newdir) | |
bfb61299 | 1238 | { |
57676091 | 1239 | /* Get rid of any slash at the end of newdir, unless newdir is |
f0f95d31 | 1240 | just / or // (an incomplete UNC name). */ |
199607e4 | 1241 | length = strlen (newdir); |
f0f95d31 | 1242 | if (length > 1 && IS_DIRECTORY_SEP (newdir[length - 1]) |
57676091 RS |
1243 | #ifdef WINDOWSNT |
1244 | && !(length == 2 && IS_DIRECTORY_SEP (newdir[0])) | |
1245 | #endif | |
1246 | ) | |
bfb61299 JB |
1247 | { |
1248 | unsigned char *temp = (unsigned char *) alloca (length); | |
1249 | bcopy (newdir, temp, length - 1); | |
1250 | temp[length - 1] = 0; | |
1251 | newdir = temp; | |
1252 | } | |
1253 | tlen = length + 1; | |
1254 | } | |
1255 | else | |
1256 | tlen = 0; | |
570d7624 | 1257 | |
bfb61299 JB |
1258 | /* Now concatenate the directory and name to new space in the stack frame */ |
1259 | tlen += strlen (nm) + 1; | |
5e570b75 | 1260 | #ifdef DOS_NT |
f0f95d31 RS |
1261 | /* Reserve space for drive specifier and escape prefix, since either |
1262 | or both may need to be inserted. (The Microsoft x86 compiler | |
5e570b75 | 1263 | produces incorrect code if the following two lines are combined.) */ |
f0f95d31 RS |
1264 | target = (unsigned char *) alloca (tlen + 4); |
1265 | target += 4; | |
5e570b75 | 1266 | #else /* not DOS_NT */ |
570d7624 | 1267 | target = (unsigned char *) alloca (tlen); |
5e570b75 | 1268 | #endif /* not DOS_NT */ |
570d7624 JB |
1269 | *target = 0; |
1270 | ||
1271 | if (newdir) | |
1272 | { | |
5e570b75 | 1273 | if (nm[0] == 0 || IS_DIRECTORY_SEP (nm[0])) |
f5321b5c | 1274 | { |
3ea2d8b2 | 1275 | #ifdef DOS_NT |
f5321b5c RS |
1276 | /* If newdir is effectively "C:/", then the drive letter will have |
1277 | been stripped and newdir will be "/". Concatenating with an | |
1278 | absolute directory in nm produces "//", which will then be | |
1279 | incorrectly treated as a network share. Ignore newdir in | |
1280 | this case (keeping the drive letter). */ | |
efdc16c9 | 1281 | if (!(drive && nm[0] && IS_DIRECTORY_SEP (newdir[0]) |
f5321b5c RS |
1282 | && newdir[1] == '\0')) |
1283 | #endif | |
1284 | strcpy (target, newdir); | |
1285 | } | |
570d7624 | 1286 | else |
c77d647e | 1287 | file_name_as_directory (target, newdir); |
570d7624 JB |
1288 | } |
1289 | ||
1290 | strcat (target, nm); | |
199607e4 | 1291 | |
214378ec GM |
1292 | /* Now canonicalize by removing `//', `/.' and `/foo/..' if they |
1293 | appear. */ | |
5b5a2ea1 SM |
1294 | { |
1295 | unsigned char *p = target; | |
1296 | unsigned char *o = target; | |
570d7624 | 1297 | |
5b5a2ea1 SM |
1298 | while (*p) |
1299 | { | |
5b5a2ea1 SM |
1300 | if (!IS_DIRECTORY_SEP (*p)) |
1301 | { | |
1302 | *o++ = *p++; | |
1303 | } | |
1304 | else if (p[1] == '.' | |
1305 | && (IS_DIRECTORY_SEP (p[2]) | |
1306 | || p[2] == 0)) | |
1307 | { | |
1308 | /* If "/." is the entire filename, keep the "/". Otherwise, | |
1309 | just delete the whole "/.". */ | |
1310 | if (o == target && p[2] == '\0') | |
1311 | *o++ = *p; | |
1312 | p += 2; | |
1313 | } | |
1314 | else if (p[1] == '.' && p[2] == '.' | |
1315 | /* `/../' is the "superroot" on certain file systems. | |
1316 | Turned off on DOS_NT systems because they have no | |
1317 | "superroot" and because this causes us to produce | |
1318 | file names like "d:/../foo" which fail file-related | |
1319 | functions of the underlying OS. (To reproduce, try a | |
1320 | long series of "../../" in default_directory, longer | |
1321 | than the number of levels from the root.) */ | |
aa4060b9 | 1322 | #ifndef DOS_NT |
5b5a2ea1 | 1323 | && o != target |
aa4060b9 | 1324 | #endif |
5b5a2ea1 SM |
1325 | && (IS_DIRECTORY_SEP (p[3]) || p[3] == 0)) |
1326 | { | |
1327 | while (o != target && (--o) && !IS_DIRECTORY_SEP (*o)) | |
1328 | ; | |
1329 | /* Keep initial / only if this is the whole name. */ | |
1330 | if (o == target && IS_ANY_SEP (*o) && p[3] == 0) | |
1331 | ++o; | |
1332 | p += 3; | |
1333 | } | |
1334 | else if (p > target && IS_DIRECTORY_SEP (p[1])) | |
1335 | /* Collapse multiple `/' in a row. */ | |
1336 | p++; | |
1337 | else | |
1338 | { | |
1339 | *o++ = *p++; | |
1340 | } | |
5b5a2ea1 | 1341 | } |
570d7624 | 1342 | |
5e570b75 | 1343 | #ifdef DOS_NT |
5b5a2ea1 | 1344 | /* At last, set drive name. */ |
5e570b75 | 1345 | #ifdef WINDOWSNT |
5b5a2ea1 SM |
1346 | /* Except for network file name. */ |
1347 | if (!(IS_DIRECTORY_SEP (target[0]) && IS_DIRECTORY_SEP (target[1]))) | |
5e570b75 | 1348 | #endif /* WINDOWSNT */ |
5b5a2ea1 SM |
1349 | { |
1350 | if (!drive) abort (); | |
1351 | target -= 2; | |
1352 | target[0] = DRIVE_LETTER (drive); | |
1353 | target[1] = ':'; | |
1354 | } | |
1355 | /* Reinsert the escape prefix if required. */ | |
1356 | if (is_escaped) | |
1357 | { | |
1358 | target -= 2; | |
1359 | target[0] = '/'; | |
1360 | target[1] = ':'; | |
1361 | } | |
1362 | CORRECT_DIR_SEPS (target); | |
5e570b75 | 1363 | #endif /* DOS_NT */ |
4c3c22f3 | 1364 | |
5b5a2ea1 SM |
1365 | result = make_specified_string (target, -1, o - target, multibyte); |
1366 | } | |
beb402de KG |
1367 | |
1368 | /* Again look to see if the file name has special constructs in it | |
1369 | and perhaps call the corresponding file handler. This is needed | |
1370 | for filenames such as "/foo/../user@host:/bar/../baz". Expanding | |
1371 | the ".." component gives us "/user@host:/bar/../baz" which needs | |
1372 | to be expanded again. */ | |
1373 | handler = Ffind_file_name_handler (result, Qexpand_file_name); | |
1374 | if (!NILP (handler)) | |
1375 | return call3 (handler, Qexpand_file_name, result, default_directory); | |
1376 | ||
1377 | return result; | |
570d7624 | 1378 | } |
5e570b75 | 1379 | |
4887597a EZ |
1380 | #if 0 |
1381 | /* PLEASE DO NOT DELETE THIS COMMENTED-OUT VERSION! | |
1382 | This is the old version of expand-file-name, before it was thoroughly | |
1383 | rewritten for Emacs 10.31. We leave this version here commented-out, | |
1384 | because the code is very complex and likely to have subtle bugs. If | |
1385 | bugs _are_ found, it might be of interest to look at the old code and | |
1386 | see what did it do in the relevant situation. | |
1387 | ||
1388 | Don't remove this code: it's true that it will be accessible via CVS, | |
1389 | but a few years from deletion, people will forget it is there. */ | |
1390 | ||
1391 | /* Changed this DEFUN to a DEAFUN, so as not to confuse `make-docfile'. */ | |
1392 | DEAFUN ("expand-file-name", Fexpand_file_name, Sexpand_file_name, 1, 2, 0, | |
1393 | "Convert FILENAME to absolute, and canonicalize it.\n\ | |
1394 | Second arg DEFAULT is directory to start with if FILENAME is relative\n\ | |
c70a4df6 | 1395 | \(does not start with slash); if DEFAULT is nil or missing,\n\ |
4887597a EZ |
1396 | the current buffer's value of default-directory is used.\n\ |
1397 | Filenames containing `.' or `..' as components are simplified;\n\ | |
1398 | initial `~/' expands to your home directory.\n\ | |
1399 | See also the function `substitute-in-file-name'.") | |
1400 | (name, defalt) | |
1401 | Lisp_Object name, defalt; | |
1402 | { | |
1403 | unsigned char *nm; | |
1404 | ||
1405 | register unsigned char *newdir, *p, *o; | |
1406 | int tlen; | |
1407 | unsigned char *target; | |
1408 | struct passwd *pw; | |
1409 | int lose; | |
4887597a | 1410 | |
b7826503 | 1411 | CHECK_STRING (name); |
d5db4077 | 1412 | nm = SDATA (name); |
4887597a EZ |
1413 | |
1414 | /* If nm is absolute, flush ...// and detect /./ and /../. | |
1415 | If no /./ or /../ we can return right away. */ | |
7c2fb837 | 1416 | if (nm[0] == '/') |
4887597a EZ |
1417 | { |
1418 | p = nm; | |
1419 | lose = 0; | |
1420 | while (*p) | |
1421 | { | |
1422 | if (p[0] == '/' && p[1] == '/' | |
4887597a EZ |
1423 | ) |
1424 | nm = p + 1; | |
1425 | if (p[0] == '/' && p[1] == '~') | |
1426 | nm = p + 1, lose = 1; | |
1427 | if (p[0] == '/' && p[1] == '.' | |
1428 | && (p[2] == '/' || p[2] == 0 | |
1429 | || (p[2] == '.' && (p[3] == '/' || p[3] == 0)))) | |
1430 | lose = 1; | |
4887597a EZ |
1431 | p++; |
1432 | } | |
1433 | if (!lose) | |
1434 | { | |
d5db4077 | 1435 | if (nm == SDATA (name)) |
4887597a EZ |
1436 | return name; |
1437 | return build_string (nm); | |
1438 | } | |
1439 | } | |
1440 | ||
1441 | /* Now determine directory to start with and put it in NEWDIR */ | |
1442 | ||
1443 | newdir = 0; | |
1444 | ||
1445 | if (nm[0] == '~') /* prefix ~ */ | |
7c2fb837 | 1446 | if (nm[1] == '/' || nm[1] == 0)/* ~/filename */ |
4887597a EZ |
1447 | { |
1448 | if (!(newdir = (unsigned char *) egetenv ("HOME"))) | |
1449 | newdir = (unsigned char *) ""; | |
1450 | nm++; | |
4887597a EZ |
1451 | } |
1452 | else /* ~user/filename */ | |
1453 | { | |
1454 | /* Get past ~ to user */ | |
1455 | unsigned char *user = nm + 1; | |
1456 | /* Find end of name. */ | |
1457 | unsigned char *ptr = (unsigned char *) index (user, '/'); | |
1458 | int len = ptr ? ptr - user : strlen (user); | |
4887597a EZ |
1459 | /* Copy the user name into temp storage. */ |
1460 | o = (unsigned char *) alloca (len + 1); | |
1461 | bcopy ((char *) user, o, len); | |
1462 | o[len] = 0; | |
1463 | ||
1464 | /* Look up the user name. */ | |
67c08d6c | 1465 | BLOCK_INPUT; |
4887597a | 1466 | pw = (struct passwd *) getpwnam (o + 1); |
67c08d6c | 1467 | UNBLOCK_INPUT; |
4887597a EZ |
1468 | if (!pw) |
1469 | error ("\"%s\" isn't a registered user", o + 1); | |
1470 | ||
1471 | newdir = (unsigned char *) pw->pw_dir; | |
1472 | ||
1473 | /* Discard the user name from NM. */ | |
1474 | nm += len; | |
1475 | } | |
1476 | ||
7c2fb837 | 1477 | if (nm[0] != '/' && !newdir) |
4887597a EZ |
1478 | { |
1479 | if (NILP (defalt)) | |
1480 | defalt = current_buffer->directory; | |
b7826503 | 1481 | CHECK_STRING (defalt); |
d5db4077 | 1482 | newdir = SDATA (defalt); |
4887597a EZ |
1483 | } |
1484 | ||
1485 | /* Now concatenate the directory and name to new space in the stack frame */ | |
1486 | ||
1487 | tlen = (newdir ? strlen (newdir) + 1 : 0) + strlen (nm) + 1; | |
1488 | target = (unsigned char *) alloca (tlen); | |
1489 | *target = 0; | |
1490 | ||
1491 | if (newdir) | |
1492 | { | |
4887597a EZ |
1493 | if (nm[0] == 0 || nm[0] == '/') |
1494 | strcpy (target, newdir); | |
1495 | else | |
4887597a EZ |
1496 | file_name_as_directory (target, newdir); |
1497 | } | |
1498 | ||
1499 | strcat (target, nm); | |
4887597a EZ |
1500 | |
1501 | /* Now canonicalize by removing /. and /foo/.. if they appear */ | |
1502 | ||
1503 | p = target; | |
1504 | o = target; | |
1505 | ||
1506 | while (*p) | |
1507 | { | |
4887597a EZ |
1508 | if (*p != '/') |
1509 | { | |
1510 | *o++ = *p++; | |
1511 | } | |
1512 | else if (!strncmp (p, "//", 2) | |
4887597a EZ |
1513 | ) |
1514 | { | |
1515 | o = target; | |
1516 | p++; | |
1517 | } | |
994a7262 RS |
1518 | else if (p[0] == '/' && p[1] == '.' |
1519 | && (p[2] == '/' || p[2] == 0)) | |
4887597a EZ |
1520 | p += 2; |
1521 | else if (!strncmp (p, "/..", 3) | |
1522 | /* `/../' is the "superroot" on certain file systems. */ | |
1523 | && o != target | |
1524 | && (p[3] == '/' || p[3] == 0)) | |
1525 | { | |
1526 | while (o != target && *--o != '/') | |
1527 | ; | |
4887597a EZ |
1528 | if (o == target && *o == '/') |
1529 | ++o; | |
1530 | p += 3; | |
1531 | } | |
1532 | else | |
1533 | { | |
1534 | *o++ = *p++; | |
1535 | } | |
4887597a EZ |
1536 | } |
1537 | ||
1538 | return make_string (target, o - target); | |
1539 | } | |
1540 | #endif | |
570d7624 | 1541 | \f |
c70a4df6 SM |
1542 | /* If /~ or // appears, discard everything through first slash. */ |
1543 | static int | |
1544 | file_name_absolute_p (filename) | |
1545 | const unsigned char *filename; | |
1546 | { | |
1547 | return | |
1548 | (IS_DIRECTORY_SEP (*filename) || *filename == '~' | |
c70a4df6 SM |
1549 | #ifdef DOS_NT |
1550 | || (IS_DRIVE (*filename) && IS_DEVICE_SEP (filename[1]) | |
1551 | && IS_DIRECTORY_SEP (filename[2])) | |
1552 | #endif | |
1553 | ); | |
1554 | } | |
1555 | ||
1556 | static unsigned char * | |
1557 | search_embedded_absfilename (nm, endp) | |
1558 | unsigned char *nm, *endp; | |
1559 | { | |
1560 | unsigned char *p, *s; | |
1561 | ||
1562 | for (p = nm + 1; p < endp; p++) | |
1563 | { | |
1564 | if ((0 | |
c70a4df6 SM |
1565 | || IS_DIRECTORY_SEP (p[-1])) |
1566 | && file_name_absolute_p (p) | |
e39a993c | 1567 | #if defined (WINDOWSNT) || defined(CYGWIN) |
c70a4df6 SM |
1568 | /* // at start of file name is meaningful in Apollo, |
1569 | WindowsNT and Cygwin systems. */ | |
f34574c6 | 1570 | && !(IS_DIRECTORY_SEP (p[0]) && p - 1 == nm) |
e39a993c | 1571 | #endif /* not (WINDOWSNT || CYGWIN) */ |
c70a4df6 SM |
1572 | ) |
1573 | { | |
7c2fb837 | 1574 | for (s = p; *s && (!IS_DIRECTORY_SEP (*s)); s++); |
c70a4df6 SM |
1575 | if (p[0] == '~' && s > p + 1) /* we've got "/~something/" */ |
1576 | { | |
1577 | unsigned char *o = alloca (s - p + 1); | |
1578 | struct passwd *pw; | |
1579 | bcopy (p, o, s - p); | |
1580 | o [s - p] = 0; | |
1581 | ||
1582 | /* If we have ~user and `user' exists, discard | |
1583 | everything up to ~. But if `user' does not exist, leave | |
1584 | ~user alone, it might be a literal file name. */ | |
67c08d6c YM |
1585 | BLOCK_INPUT; |
1586 | pw = getpwnam (o + 1); | |
1587 | UNBLOCK_INPUT; | |
1588 | if (pw) | |
c70a4df6 | 1589 | return p; |
c70a4df6 SM |
1590 | } |
1591 | else | |
1592 | return p; | |
1593 | } | |
1594 | } | |
1595 | return NULL; | |
1596 | } | |
1597 | ||
570d7624 | 1598 | DEFUN ("substitute-in-file-name", Fsubstitute_in_file_name, |
8c1a1077 PJ |
1599 | Ssubstitute_in_file_name, 1, 1, 0, |
1600 | doc: /* Substitute environment variables referred to in FILENAME. | |
1601 | `$FOO' where FOO is an environment variable name means to substitute | |
1602 | the value of that variable. The variable name should be terminated | |
1603 | with a character not a letter, digit or underscore; otherwise, enclose | |
1604 | the entire variable name in braces. | |
7c2fb837 | 1605 | If `/~' appears, all of FILENAME through that `/' is discarded. */) |
8c1a1077 | 1606 | (filename) |
3b7f6e60 | 1607 | Lisp_Object filename; |
570d7624 JB |
1608 | { |
1609 | unsigned char *nm; | |
1610 | ||
1611 | register unsigned char *s, *p, *o, *x, *endp; | |
6bbd7a29 | 1612 | unsigned char *target = NULL; |
570d7624 JB |
1613 | int total = 0; |
1614 | int substituted = 0; | |
1615 | unsigned char *xnm; | |
8ce069f5 | 1616 | Lisp_Object handler; |
570d7624 | 1617 | |
b7826503 | 1618 | CHECK_STRING (filename); |
570d7624 | 1619 | |
8ce069f5 RS |
1620 | /* If the file name has special constructs in it, |
1621 | call the corresponding file handler. */ | |
3b7f6e60 | 1622 | handler = Ffind_file_name_handler (filename, Qsubstitute_in_file_name); |
8ce069f5 | 1623 | if (!NILP (handler)) |
3b7f6e60 | 1624 | return call2 (handler, Qsubstitute_in_file_name, filename); |
8ce069f5 | 1625 | |
d5db4077 | 1626 | nm = SDATA (filename); |
199607e4 RS |
1627 | #ifdef DOS_NT |
1628 | nm = strcpy (alloca (strlen (nm) + 1), nm); | |
1629 | CORRECT_DIR_SEPS (nm); | |
d5db4077 | 1630 | substituted = (strcmp (nm, SDATA (filename)) != 0); |
a5a1cc06 | 1631 | #endif |
d5db4077 | 1632 | endp = nm + SBYTES (filename); |
570d7624 | 1633 | |
82330e7f | 1634 | /* If /~ or // appears, discard everything through first slash. */ |
c70a4df6 SM |
1635 | p = search_embedded_absfilename (nm, endp); |
1636 | if (p) | |
1637 | /* Start over with the new string, so we check the file-name-handler | |
1638 | again. Important with filenames like "/home/foo//:/hello///there" | |
1639 | which whould substitute to "/:/hello///there" rather than "/there". */ | |
1640 | return Fsubstitute_in_file_name | |
1641 | (make_specified_string (p, -1, endp - p, | |
1642 | STRING_MULTIBYTE (filename))); | |
570d7624 | 1643 | |
570d7624 JB |
1644 | |
1645 | /* See if any variables are substituted into the string | |
1646 | and find the total length of their values in `total' */ | |
1647 | ||
1648 | for (p = nm; p != endp;) | |
1649 | if (*p != '$') | |
1650 | p++; | |
1651 | else | |
1652 | { | |
1653 | p++; | |
1654 | if (p == endp) | |
1655 | goto badsubst; | |
1656 | else if (*p == '$') | |
1657 | { | |
1658 | /* "$$" means a single "$" */ | |
1659 | p++; | |
1660 | total -= 1; | |
1661 | substituted = 1; | |
1662 | continue; | |
1663 | } | |
1664 | else if (*p == '{') | |
1665 | { | |
1666 | o = ++p; | |
1667 | while (p != endp && *p != '}') p++; | |
1668 | if (*p != '}') goto missingclose; | |
1669 | s = p; | |
1670 | } | |
1671 | else | |
1672 | { | |
1673 | o = p; | |
1674 | while (p != endp && (isalnum (*p) || *p == '_')) p++; | |
1675 | s = p; | |
1676 | } | |
1677 | ||
1678 | /* Copy out the variable name */ | |
1679 | target = (unsigned char *) alloca (s - o + 1); | |
1680 | strncpy (target, o, s - o); | |
1681 | target[s - o] = 0; | |
5e570b75 | 1682 | #ifdef DOS_NT |
4c3c22f3 | 1683 | strupr (target); /* $home == $HOME etc. */ |
5e570b75 | 1684 | #endif /* DOS_NT */ |
570d7624 JB |
1685 | |
1686 | /* Get variable value */ | |
1687 | o = (unsigned char *) egetenv (target); | |
8d2ced53 | 1688 | if (o) |
3efaadb7 SM |
1689 | { /* Eight-bit chars occupy upto 2 bytes in multibyte. */ |
1690 | total += strlen (o) * (STRING_MULTIBYTE (filename) ? 2 : 1); | |
8d2ced53 SM |
1691 | substituted = 1; |
1692 | } | |
1693 | else if (*p == '}') | |
1694 | goto badvar; | |
570d7624 JB |
1695 | } |
1696 | ||
1697 | if (!substituted) | |
3b7f6e60 | 1698 | return filename; |
570d7624 JB |
1699 | |
1700 | /* If substitution required, recopy the string and do it */ | |
1701 | /* Make space in stack frame for the new copy */ | |
d5db4077 | 1702 | xnm = (unsigned char *) alloca (SBYTES (filename) + total + 1); |
570d7624 JB |
1703 | x = xnm; |
1704 | ||
1705 | /* Copy the rest of the name through, replacing $ constructs with values */ | |
1706 | for (p = nm; *p;) | |
1707 | if (*p != '$') | |
1708 | *x++ = *p++; | |
1709 | else | |
1710 | { | |
1711 | p++; | |
1712 | if (p == endp) | |
1713 | goto badsubst; | |
1714 | else if (*p == '$') | |
1715 | { | |
1716 | *x++ = *p++; | |
1717 | continue; | |
1718 | } | |
1719 | else if (*p == '{') | |
1720 | { | |
1721 | o = ++p; | |
1722 | while (p != endp && *p != '}') p++; | |
1723 | if (*p != '}') goto missingclose; | |
1724 | s = p++; | |
1725 | } | |
1726 | else | |
1727 | { | |
1728 | o = p; | |
1729 | while (p != endp && (isalnum (*p) || *p == '_')) p++; | |
1730 | s = p; | |
1731 | } | |
1732 | ||
1733 | /* Copy out the variable name */ | |
1734 | target = (unsigned char *) alloca (s - o + 1); | |
1735 | strncpy (target, o, s - o); | |
1736 | target[s - o] = 0; | |
5e570b75 | 1737 | #ifdef DOS_NT |
4c3c22f3 | 1738 | strupr (target); /* $home == $HOME etc. */ |
5e570b75 | 1739 | #endif /* DOS_NT */ |
570d7624 JB |
1740 | |
1741 | /* Get variable value */ | |
1742 | o = (unsigned char *) egetenv (target); | |
570d7624 | 1743 | if (!o) |
8d2ced53 SM |
1744 | { |
1745 | *x++ = '$'; | |
1746 | strcpy (x, target); x+= strlen (target); | |
1747 | } | |
1748 | else if (STRING_MULTIBYTE (filename)) | |
60d67b83 RS |
1749 | { |
1750 | /* If the original string is multibyte, | |
1751 | convert what we substitute into multibyte. */ | |
60d67b83 RS |
1752 | while (*o) |
1753 | { | |
dc5142f6 KH |
1754 | int c = *o++; |
1755 | c = unibyte_char_to_multibyte (c); | |
ce51c54c | 1756 | x += CHAR_STRING (c, x); |
60d67b83 RS |
1757 | } |
1758 | } | |
1759 | else | |
1760 | { | |
1761 | strcpy (x, o); | |
1762 | x += strlen (o); | |
1763 | } | |
570d7624 JB |
1764 | } |
1765 | ||
1766 | *x = 0; | |
1767 | ||
82330e7f | 1768 | /* If /~ or // appears, discard everything through first slash. */ |
c70a4df6 SM |
1769 | while ((p = search_embedded_absfilename (xnm, x))) |
1770 | /* This time we do not start over because we've already expanded envvars | |
1771 | and replaced $$ with $. Maybe we should start over as well, but we'd | |
1772 | need to quote some $ to $$ first. */ | |
1773 | xnm = p; | |
570d7624 | 1774 | |
d7231f93 | 1775 | return make_specified_string (xnm, -1, x - xnm, STRING_MULTIBYTE (filename)); |
570d7624 JB |
1776 | |
1777 | badsubst: | |
1778 | error ("Bad format environment-variable substitution"); | |
1779 | missingclose: | |
1780 | error ("Missing \"}\" in environment-variable substitution"); | |
1781 | badvar: | |
1782 | error ("Substituting nonexistent environment variable \"%s\"", target); | |
1783 | ||
1784 | /* NOTREACHED */ | |
6bbd7a29 | 1785 | return Qnil; |
570d7624 JB |
1786 | } |
1787 | \f | |
067ffa38 | 1788 | /* A slightly faster and more convenient way to get |
298b760e | 1789 | (directory-file-name (expand-file-name FOO)). */ |
067ffa38 | 1790 | |
570d7624 JB |
1791 | Lisp_Object |
1792 | expand_and_dir_to_file (filename, defdir) | |
1793 | Lisp_Object filename, defdir; | |
1794 | { | |
199607e4 | 1795 | register Lisp_Object absname; |
570d7624 | 1796 | |
199607e4 | 1797 | absname = Fexpand_file_name (filename, defdir); |
7c2fb837 | 1798 | |
199607e4 | 1799 | /* Remove final slash, if any (unless this is the root dir). |
570d7624 | 1800 | stat behaves differently depending! */ |
d5db4077 KR |
1801 | if (SCHARS (absname) > 1 |
1802 | && IS_DIRECTORY_SEP (SREF (absname, SBYTES (absname) - 1)) | |
1803 | && !IS_DEVICE_SEP (SREF (absname, SBYTES (absname)-2))) | |
ddc61f46 | 1804 | /* We cannot take shortcuts; they might be wrong for magic file names. */ |
199607e4 | 1805 | absname = Fdirectory_file_name (absname); |
199607e4 | 1806 | return absname; |
570d7624 JB |
1807 | } |
1808 | \f | |
3ed15d97 RS |
1809 | /* Signal an error if the file ABSNAME already exists. |
1810 | If INTERACTIVE is nonzero, ask the user whether to proceed, | |
1811 | and bypass the error if the user says to go ahead. | |
1812 | QUERYSTRING is a name for the action that is being considered | |
1813 | to alter the file. | |
de1d0127 | 1814 | |
3ed15d97 | 1815 | *STATPTR is used to store the stat information if the file exists. |
de1d0127 | 1816 | If the file does not exist, STATPTR->st_mode is set to 0. |
b8b29dc9 RS |
1817 | If STATPTR is null, we don't store into it. |
1818 | ||
1819 | If QUICK is nonzero, we ask for y or n, not yes or no. */ | |
3ed15d97 | 1820 | |
c4df73f9 | 1821 | void |
b8b29dc9 | 1822 | barf_or_query_if_file_exists (absname, querystring, interactive, statptr, quick) |
570d7624 JB |
1823 | Lisp_Object absname; |
1824 | unsigned char *querystring; | |
1825 | int interactive; | |
3ed15d97 | 1826 | struct stat *statptr; |
b8b29dc9 | 1827 | int quick; |
570d7624 | 1828 | { |
643c73b9 | 1829 | register Lisp_Object tem, encoded_filename; |
4018b5ef | 1830 | struct stat statbuf; |
570d7624 JB |
1831 | struct gcpro gcpro1; |
1832 | ||
643c73b9 RS |
1833 | encoded_filename = ENCODE_FILE (absname); |
1834 | ||
4018b5ef RS |
1835 | /* stat is a good way to tell whether the file exists, |
1836 | regardless of what access permissions it has. */ | |
f72b5416 | 1837 | if (lstat (SDATA (encoded_filename), &statbuf) >= 0) |
570d7624 JB |
1838 | { |
1839 | if (! interactive) | |
24b1ddad KS |
1840 | xsignal2 (Qfile_already_exists, |
1841 | build_string ("File already exists"), absname); | |
570d7624 | 1842 | GCPRO1 (absname); |
67e8e2b8 RS |
1843 | tem = format2 ("File %s already exists; %s anyway? ", |
1844 | absname, build_string (querystring)); | |
b8b29dc9 RS |
1845 | if (quick) |
1846 | tem = Fy_or_n_p (tem); | |
1847 | else | |
1848 | tem = do_yes_or_no_p (tem); | |
570d7624 | 1849 | UNGCPRO; |
265a9e55 | 1850 | if (NILP (tem)) |
24b1ddad KS |
1851 | xsignal2 (Qfile_already_exists, |
1852 | build_string ("File already exists"), absname); | |
3ed15d97 RS |
1853 | if (statptr) |
1854 | *statptr = statbuf; | |
1855 | } | |
1856 | else | |
1857 | { | |
1858 | if (statptr) | |
1859 | statptr->st_mode = 0; | |
570d7624 JB |
1860 | } |
1861 | return; | |
1862 | } | |
1863 | ||
795c20df | 1864 | DEFUN ("copy-file", Fcopy_file, Scopy_file, 2, 5, |
7c0f6118 | 1865 | "fCopy file: \nGCopy %s to file: \np\nP", |
8c1a1077 PJ |
1866 | doc: /* Copy FILE to NEWNAME. Both args must be strings. |
1867 | If NEWNAME names a directory, copy FILE there. | |
795c20df CY |
1868 | |
1869 | This function always sets the file modes of the output file to match | |
1870 | the input file. | |
1871 | ||
1872 | The optional third argument OK-IF-ALREADY-EXISTS specifies what to do | |
1873 | if file NEWNAME already exists. If OK-IF-ALREADY-EXISTS is nil, we | |
1874 | signal a `file-already-exists' error without overwriting. If | |
1875 | OK-IF-ALREADY-EXISTS is a number, we request confirmation from the user | |
1876 | about overwriting; this is what happens in interactive use with M-x. | |
1877 | Any other value for OK-IF-ALREADY-EXISTS means to overwrite the | |
1878 | existing file. | |
c50f15d0 | 1879 | |
7f08b80e | 1880 | Fourth arg KEEP-TIME non-nil means give the output file the same |
8c1a1077 | 1881 | last-modified time as the old one. (This works on only some systems.) |
c50f15d0 | 1882 | |
7fce7dfe EZ |
1883 | A prefix arg makes KEEP-TIME non-nil. |
1884 | ||
586702ce RS |
1885 | If PRESERVE-UID-GID is non-nil, we try to transfer the |
1886 | uid and gid of FILE to NEWNAME. */) | |
795c20df CY |
1887 | (file, newname, ok_if_already_exists, keep_time, preserve_uid_gid) |
1888 | Lisp_Object file, newname, ok_if_already_exists, keep_time; | |
586702ce | 1889 | Lisp_Object preserve_uid_gid; |
570d7624 JB |
1890 | { |
1891 | int ifd, ofd, n; | |
1892 | char buf[16 * 1024]; | |
3ed15d97 | 1893 | struct stat st, out_st; |
32f4334d | 1894 | Lisp_Object handler; |
b1d1b865 | 1895 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; |
aed13378 | 1896 | int count = SPECPDL_INDEX (); |
f73b0ada | 1897 | int input_file_statable_p; |
b1d1b865 | 1898 | Lisp_Object encoded_file, encoded_newname; |
570d7624 | 1899 | |
b1d1b865 RS |
1900 | encoded_file = encoded_newname = Qnil; |
1901 | GCPRO4 (file, newname, encoded_file, encoded_newname); | |
b7826503 PJ |
1902 | CHECK_STRING (file); |
1903 | CHECK_STRING (newname); | |
b1d1b865 | 1904 | |
a9d14e54 | 1905 | if (!NILP (Ffile_directory_p (newname))) |
6b61353c | 1906 | newname = Fexpand_file_name (Ffile_name_nondirectory (file), newname); |
a9d14e54 GM |
1907 | else |
1908 | newname = Fexpand_file_name (newname, Qnil); | |
1909 | ||
3b7f6e60 | 1910 | file = Fexpand_file_name (file, Qnil); |
32f4334d | 1911 | |
0bf2eed2 | 1912 | /* If the input file name has special constructs in it, |
32f4334d | 1913 | call the corresponding file handler. */ |
3b7f6e60 | 1914 | handler = Ffind_file_name_handler (file, Qcopy_file); |
0bf2eed2 | 1915 | /* Likewise for output file name. */ |
51cf6d37 | 1916 | if (NILP (handler)) |
49307295 | 1917 | handler = Ffind_file_name_handler (newname, Qcopy_file); |
32f4334d | 1918 | if (!NILP (handler)) |
1f163f28 MA |
1919 | RETURN_UNGCPRO (call6 (handler, Qcopy_file, file, newname, |
1920 | ok_if_already_exists, keep_time, preserve_uid_gid)); | |
32f4334d | 1921 | |
b1d1b865 RS |
1922 | encoded_file = ENCODE_FILE (file); |
1923 | encoded_newname = ENCODE_FILE (newname); | |
1924 | ||
265a9e55 | 1925 | if (NILP (ok_if_already_exists) |
93c30b5f | 1926 | || INTEGERP (ok_if_already_exists)) |
2f868094 | 1927 | barf_or_query_if_file_exists (newname, "copy to it", |
b8b29dc9 | 1928 | INTEGERP (ok_if_already_exists), &out_st, 0); |
d5db4077 | 1929 | else if (stat (SDATA (encoded_newname), &out_st) < 0) |
3ed15d97 | 1930 | out_st.st_mode = 0; |
570d7624 | 1931 | |
e8691c59 | 1932 | #ifdef WINDOWSNT |
d5db4077 | 1933 | if (!CopyFile (SDATA (encoded_file), |
efdc16c9 | 1934 | SDATA (encoded_newname), |
e8691c59 GM |
1935 | FALSE)) |
1936 | report_file_error ("Copying file", Fcons (file, Fcons (newname, Qnil))); | |
8b53dc06 JR |
1937 | /* CopyFile retains the timestamp by default. */ |
1938 | else if (NILP (keep_time)) | |
e8691c59 GM |
1939 | { |
1940 | EMACS_TIME now; | |
ad497129 JR |
1941 | DWORD attributes; |
1942 | char * filename; | |
1943 | ||
e8691c59 | 1944 | EMACS_GET_TIME (now); |
d5db4077 | 1945 | filename = SDATA (encoded_newname); |
ad497129 JR |
1946 | |
1947 | /* Ensure file is writable while its modified time is set. */ | |
1948 | attributes = GetFileAttributes (filename); | |
02cca86b | 1949 | SetFileAttributes (filename, attributes & ~FILE_ATTRIBUTE_READONLY); |
ad497129 JR |
1950 | if (set_file_times (filename, now, now)) |
1951 | { | |
1952 | /* Restore original attributes. */ | |
1953 | SetFileAttributes (filename, attributes); | |
24b1ddad KS |
1954 | xsignal2 (Qfile_date_error, |
1955 | build_string ("Cannot set file date"), newname); | |
ad497129 JR |
1956 | } |
1957 | /* Restore original attributes. */ | |
1958 | SetFileAttributes (filename, attributes); | |
e8691c59 GM |
1959 | } |
1960 | #else /* not WINDOWSNT */ | |
13336908 | 1961 | immediate_quit = 1; |
d5db4077 | 1962 | ifd = emacs_open (SDATA (encoded_file), O_RDONLY, 0); |
13336908 RS |
1963 | immediate_quit = 0; |
1964 | ||
570d7624 | 1965 | if (ifd < 0) |
3b7f6e60 | 1966 | report_file_error ("Opening input file", Fcons (file, Qnil)); |
570d7624 | 1967 | |
b5148e85 RS |
1968 | record_unwind_protect (close_file_unwind, make_number (ifd)); |
1969 | ||
f73b0ada BF |
1970 | /* We can only copy regular files and symbolic links. Other files are not |
1971 | copyable by us. */ | |
1972 | input_file_statable_p = (fstat (ifd, &st) >= 0); | |
1973 | ||
b016179b | 1974 | #if !defined (MSDOS) || __DJGPP__ > 1 |
3ed15d97 RS |
1975 | if (out_st.st_mode != 0 |
1976 | && st.st_dev == out_st.st_dev && st.st_ino == out_st.st_ino) | |
1977 | { | |
1978 | errno = 0; | |
1979 | report_file_error ("Input and output files are the same", | |
3b7f6e60 | 1980 | Fcons (file, Fcons (newname, Qnil))); |
3ed15d97 RS |
1981 | } |
1982 | #endif | |
1983 | ||
f73b0ada BF |
1984 | #if defined (S_ISREG) && defined (S_ISLNK) |
1985 | if (input_file_statable_p) | |
1986 | { | |
1987 | if (!(S_ISREG (st.st_mode)) && !(S_ISLNK (st.st_mode))) | |
1988 | { | |
1989 | #if defined (EISDIR) | |
1990 | /* Get a better looking error message. */ | |
1991 | errno = EISDIR; | |
1992 | #endif /* EISDIR */ | |
3b7f6e60 | 1993 | report_file_error ("Non-regular file", Fcons (file, Qnil)); |
f73b0ada BF |
1994 | } |
1995 | } | |
1996 | #endif /* S_ISREG && S_ISLNK */ | |
1997 | ||
4c3c22f3 RS |
1998 | #ifdef MSDOS |
1999 | /* System's default file type was set to binary by _fmode in emacs.c. */ | |
c50f15d0 | 2000 | ofd = emacs_open (SDATA (encoded_newname), |
7fce7dfe | 2001 | O_WRONLY | O_TRUNC | O_CREAT |
795c20df | 2002 | | (NILP (ok_if_already_exists) ? O_EXCL : 0), |
c50f15d0 RS |
2003 | S_IREAD | S_IWRITE); |
2004 | #else /* not MSDOS */ | |
2005 | ofd = emacs_open (SDATA (encoded_newname), | |
2006 | O_WRONLY | O_TRUNC | O_CREAT | |
795c20df | 2007 | | (NILP (ok_if_already_exists) ? O_EXCL : 0), |
c50f15d0 | 2008 | 0666); |
4c3c22f3 | 2009 | #endif /* not MSDOS */ |
570d7624 | 2010 | if (ofd < 0) |
3ed15d97 | 2011 | report_file_error ("Opening output file", Fcons (newname, Qnil)); |
b5148e85 RS |
2012 | |
2013 | record_unwind_protect (close_file_unwind, make_number (ofd)); | |
570d7624 | 2014 | |
b5148e85 RS |
2015 | immediate_quit = 1; |
2016 | QUIT; | |
68c45bf0 PE |
2017 | while ((n = emacs_read (ifd, buf, sizeof buf)) > 0) |
2018 | if (emacs_write (ofd, buf, n) != n) | |
3ed15d97 | 2019 | report_file_error ("I/O error", Fcons (newname, Qnil)); |
b5148e85 | 2020 | immediate_quit = 0; |
570d7624 | 2021 | |
b016179b EZ |
2022 | #ifndef MSDOS |
2023 | /* Preserve the original file modes, and if requested, also its | |
2024 | owner and group. */ | |
586702ce RS |
2025 | if (input_file_statable_p) |
2026 | { | |
b016179b EZ |
2027 | if (! NILP (preserve_uid_gid)) |
2028 | fchown (ofd, st.st_uid, st.st_gid); | |
586702ce | 2029 | fchmod (ofd, st.st_mode & 07777); |
586702ce | 2030 | } |
b016179b | 2031 | #endif /* not MSDOS */ |
586702ce | 2032 | |
5acac34e | 2033 | /* Closing the output clobbers the file times on some systems. */ |
68c45bf0 | 2034 | if (emacs_close (ofd) < 0) |
5acac34e RS |
2035 | report_file_error ("I/O error", Fcons (newname, Qnil)); |
2036 | ||
f73b0ada | 2037 | if (input_file_statable_p) |
570d7624 | 2038 | { |
8ca6602c | 2039 | if (!NILP (keep_time)) |
570d7624 | 2040 | { |
de5bf5d3 JB |
2041 | EMACS_TIME atime, mtime; |
2042 | EMACS_SET_SECS_USECS (atime, st.st_atime, 0); | |
2043 | EMACS_SET_SECS_USECS (mtime, st.st_mtime, 0); | |
d5db4077 | 2044 | if (set_file_times (SDATA (encoded_newname), |
b1d1b865 | 2045 | atime, mtime)) |
24b1ddad KS |
2046 | xsignal2 (Qfile_date_error, |
2047 | build_string ("Cannot set file date"), newname); | |
570d7624 | 2048 | } |
570d7624 JB |
2049 | } |
2050 | ||
68c45bf0 | 2051 | emacs_close (ifd); |
b016179b EZ |
2052 | |
2053 | #if defined (__DJGPP__) && __DJGPP__ > 1 | |
2054 | if (input_file_statable_p) | |
2055 | { | |
2056 | /* In DJGPP v2.0 and later, fstat usually returns true file mode bits, | |
2057 | and if it can't, it tells so. Otherwise, under MSDOS we usually | |
2058 | get only the READ bit, which will make the copied file read-only, | |
2059 | so it's better not to chmod at all. */ | |
2060 | if ((_djstat_flags & _STFAIL_WRITEBIT) == 0) | |
2061 | chmod (SDATA (encoded_newname), st.st_mode & 07777); | |
2062 | } | |
2063 | #endif /* DJGPP version 2 or newer */ | |
2064 | #endif /* not WINDOWSNT */ | |
5acac34e | 2065 | |
b5148e85 RS |
2066 | /* Discard the unwind protects. */ |
2067 | specpdl_ptr = specpdl + count; | |
2068 | ||
570d7624 JB |
2069 | UNGCPRO; |
2070 | return Qnil; | |
2071 | } | |
385b6cc7 | 2072 | \f |
9bbe01fb | 2073 | DEFUN ("make-directory-internal", Fmake_directory_internal, |
353cfc19 | 2074 | Smake_directory_internal, 1, 1, 0, |
8c1a1077 PJ |
2075 | doc: /* Create a new directory named DIRECTORY. */) |
2076 | (directory) | |
3b7f6e60 | 2077 | Lisp_Object directory; |
570d7624 | 2078 | { |
19290c65 | 2079 | const unsigned char *dir; |
32f4334d | 2080 | Lisp_Object handler; |
b1d1b865 | 2081 | Lisp_Object encoded_dir; |
570d7624 | 2082 | |
b7826503 | 2083 | CHECK_STRING (directory); |
3b7f6e60 | 2084 | directory = Fexpand_file_name (directory, Qnil); |
32f4334d | 2085 | |
3b7f6e60 | 2086 | handler = Ffind_file_name_handler (directory, Qmake_directory_internal); |
32f4334d | 2087 | if (!NILP (handler)) |
3b7f6e60 | 2088 | return call2 (handler, Qmake_directory_internal, directory); |
9bbe01fb | 2089 | |
b1d1b865 RS |
2090 | encoded_dir = ENCODE_FILE (directory); |
2091 | ||
d5db4077 | 2092 | dir = SDATA (encoded_dir); |
570d7624 | 2093 | |
5e570b75 RS |
2094 | #ifdef WINDOWSNT |
2095 | if (mkdir (dir) != 0) | |
2096 | #else | |
570d7624 | 2097 | if (mkdir (dir, 0777) != 0) |
5e570b75 | 2098 | #endif |
a9f2aeae | 2099 | report_file_error ("Creating directory", list1 (directory)); |
570d7624 | 2100 | |
32f4334d | 2101 | return Qnil; |
570d7624 JB |
2102 | } |
2103 | ||
aa734e17 | 2104 | DEFUN ("delete-directory", Fdelete_directory, Sdelete_directory, 1, 1, "FDelete directory: ", |
efdc16c9 | 2105 | doc: /* Delete the directory named DIRECTORY. Does not follow symlinks. */) |
8c1a1077 | 2106 | (directory) |
3b7f6e60 | 2107 | Lisp_Object directory; |
570d7624 | 2108 | { |
19290c65 | 2109 | const unsigned char *dir; |
32f4334d | 2110 | Lisp_Object handler; |
b1d1b865 | 2111 | Lisp_Object encoded_dir; |
570d7624 | 2112 | |
b7826503 | 2113 | CHECK_STRING (directory); |
3b7f6e60 | 2114 | directory = Fdirectory_file_name (Fexpand_file_name (directory, Qnil)); |
570d7624 | 2115 | |
3b7f6e60 | 2116 | handler = Ffind_file_name_handler (directory, Qdelete_directory); |
32f4334d | 2117 | if (!NILP (handler)) |
3b7f6e60 | 2118 | return call2 (handler, Qdelete_directory, directory); |
32f4334d | 2119 | |
6cf29fe8 JR |
2120 | if (delete_by_moving_to_trash) |
2121 | return call1 (Qmove_file_to_trash, directory); | |
2122 | ||
b1d1b865 RS |
2123 | encoded_dir = ENCODE_FILE (directory); |
2124 | ||
d5db4077 | 2125 | dir = SDATA (encoded_dir); |
b1d1b865 | 2126 | |
570d7624 | 2127 | if (rmdir (dir) != 0) |
a9f2aeae | 2128 | report_file_error ("Removing directory", list1 (directory)); |
570d7624 JB |
2129 | |
2130 | return Qnil; | |
2131 | } | |
2132 | ||
2133 | DEFUN ("delete-file", Fdelete_file, Sdelete_file, 1, 1, "fDelete file: ", | |
efdc16c9 | 2134 | doc: /* Delete file named FILENAME. If it is a symlink, remove the symlink. |
8c1a1077 PJ |
2135 | If file has multiple names, it continues to exist with the other names. */) |
2136 | (filename) | |
570d7624 JB |
2137 | Lisp_Object filename; |
2138 | { | |
32f4334d | 2139 | Lisp_Object handler; |
b1d1b865 | 2140 | Lisp_Object encoded_file; |
efdc16c9 | 2141 | struct gcpro gcpro1; |
b1d1b865 | 2142 | |
efdc16c9 | 2143 | GCPRO1 (filename); |
b4bd27c5 RS |
2144 | if (!NILP (Ffile_directory_p (filename)) |
2145 | && NILP (Ffile_symlink_p (filename))) | |
24b1ddad KS |
2146 | xsignal2 (Qfile_error, |
2147 | build_string ("Removing old name: is a directory"), | |
2148 | filename); | |
efdc16c9 | 2149 | UNGCPRO; |
570d7624 | 2150 | filename = Fexpand_file_name (filename, Qnil); |
32f4334d | 2151 | |
49307295 | 2152 | handler = Ffind_file_name_handler (filename, Qdelete_file); |
32f4334d | 2153 | if (!NILP (handler)) |
8a9b0da9 | 2154 | return call2 (handler, Qdelete_file, filename); |
32f4334d | 2155 | |
6cf29fe8 JR |
2156 | if (delete_by_moving_to_trash) |
2157 | return call1 (Qmove_file_to_trash, filename); | |
2158 | ||
b1d1b865 RS |
2159 | encoded_file = ENCODE_FILE (filename); |
2160 | ||
d5db4077 | 2161 | if (0 > unlink (SDATA (encoded_file))) |
a9f2aeae | 2162 | report_file_error ("Removing old name", list1 (filename)); |
8a9b0da9 | 2163 | return Qnil; |
570d7624 JB |
2164 | } |
2165 | ||
385b6cc7 RS |
2166 | static Lisp_Object |
2167 | internal_delete_file_1 (ignore) | |
2168 | Lisp_Object ignore; | |
2169 | { | |
2170 | return Qt; | |
2171 | } | |
2172 | ||
2173 | /* Delete file FILENAME, returning 1 if successful and 0 if failed. */ | |
2174 | ||
2175 | int | |
2176 | internal_delete_file (filename) | |
2177 | Lisp_Object filename; | |
2178 | { | |
a3911e8c KR |
2179 | Lisp_Object tem; |
2180 | tem = internal_condition_case_1 (Fdelete_file, filename, | |
2181 | Qt, internal_delete_file_1); | |
2182 | return NILP (tem); | |
385b6cc7 RS |
2183 | } |
2184 | \f | |
570d7624 | 2185 | DEFUN ("rename-file", Frename_file, Srename_file, 2, 3, |
7c0f6118 | 2186 | "fRename file: \nGRename %s to file: \np", |
a4e03fe5 | 2187 | doc: /* Rename FILE as NEWNAME. Both args must be strings. |
8c1a1077 PJ |
2188 | If file has names other than FILE, it continues to have those names. |
2189 | Signals a `file-already-exists' error if a file NEWNAME already exists | |
2190 | unless optional third argument OK-IF-ALREADY-EXISTS is non-nil. | |
2191 | A number as third arg means request confirmation if NEWNAME already exists. | |
2192 | This is what happens in interactive use with M-x. */) | |
2193 | (file, newname, ok_if_already_exists) | |
3b7f6e60 | 2194 | Lisp_Object file, newname, ok_if_already_exists; |
570d7624 | 2195 | { |
32f4334d | 2196 | Lisp_Object handler; |
f72b5416 JD |
2197 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5; |
2198 | Lisp_Object encoded_file, encoded_newname, symlink_target; | |
570d7624 | 2199 | |
f72b5416 JD |
2200 | symlink_target = encoded_file = encoded_newname = Qnil; |
2201 | GCPRO5 (file, newname, encoded_file, encoded_newname, symlink_target); | |
b7826503 PJ |
2202 | CHECK_STRING (file); |
2203 | CHECK_STRING (newname); | |
3b7f6e60 | 2204 | file = Fexpand_file_name (file, Qnil); |
1ffc5c90 | 2205 | |
f83caf70 EZ |
2206 | if ((!NILP (Ffile_directory_p (newname))) |
2207 | #ifdef DOS_NT | |
2208 | /* If the file names are identical but for the case, | |
2209 | don't attempt to move directory to itself. */ | |
2210 | && (NILP (Fstring_equal (Fdowncase (file), Fdowncase (newname)))) | |
2211 | #endif | |
2212 | ) | |
1ffc5c90 RS |
2213 | newname = Fexpand_file_name (Ffile_name_nondirectory (file), newname); |
2214 | else | |
2215 | newname = Fexpand_file_name (newname, Qnil); | |
32f4334d RS |
2216 | |
2217 | /* If the file name has special constructs in it, | |
2218 | call the corresponding file handler. */ | |
3b7f6e60 | 2219 | handler = Ffind_file_name_handler (file, Qrename_file); |
51cf6d37 | 2220 | if (NILP (handler)) |
49307295 | 2221 | handler = Ffind_file_name_handler (newname, Qrename_file); |
32f4334d | 2222 | if (!NILP (handler)) |
36712b0a | 2223 | RETURN_UNGCPRO (call4 (handler, Qrename_file, |
3b7f6e60 | 2224 | file, newname, ok_if_already_exists)); |
32f4334d | 2225 | |
b1d1b865 RS |
2226 | encoded_file = ENCODE_FILE (file); |
2227 | encoded_newname = ENCODE_FILE (newname); | |
2228 | ||
bc77278f EZ |
2229 | #ifdef DOS_NT |
2230 | /* If the file names are identical but for the case, don't ask for | |
2231 | confirmation: they simply want to change the letter-case of the | |
2232 | file name. */ | |
2233 | if (NILP (Fstring_equal (Fdowncase (file), Fdowncase (newname)))) | |
2234 | #endif | |
265a9e55 | 2235 | if (NILP (ok_if_already_exists) |
93c30b5f | 2236 | || INTEGERP (ok_if_already_exists)) |
2f868094 | 2237 | barf_or_query_if_file_exists (newname, "rename to it", |
b8b29dc9 | 2238 | INTEGERP (ok_if_already_exists), 0, 0); |
d5db4077 | 2239 | if (0 > rename (SDATA (encoded_file), SDATA (encoded_newname))) |
570d7624 JB |
2240 | { |
2241 | if (errno == EXDEV) | |
2242 | { | |
440c7d00 | 2243 | #ifdef S_IFLNK |
f72b5416 | 2244 | symlink_target = Ffile_symlink_p (file); |
440c7d00 JD |
2245 | if (! NILP (symlink_target)) |
2246 | Fmake_symbolic_link (symlink_target, newname, | |
f59abab9 | 2247 | NILP (ok_if_already_exists) ? Qnil : Qt); |
440c7d00 JD |
2248 | else |
2249 | #endif | |
586702ce RS |
2250 | Fcopy_file (file, newname, |
2251 | /* We have already prompted if it was an integer, | |
2252 | so don't have copy-file prompt again. */ | |
2253 | NILP (ok_if_already_exists) ? Qnil : Qt, | |
795c20df | 2254 | Qt, Qt); |
d550c425 | 2255 | |
3b7f6e60 | 2256 | Fdelete_file (file); |
570d7624 JB |
2257 | } |
2258 | else | |
a9f2aeae | 2259 | report_file_error ("Renaming", list2 (file, newname)); |
570d7624 JB |
2260 | } |
2261 | UNGCPRO; | |
2262 | return Qnil; | |
2263 | } | |
2264 | ||
2265 | DEFUN ("add-name-to-file", Fadd_name_to_file, Sadd_name_to_file, 2, 3, | |
7c0f6118 | 2266 | "fAdd name to file: \nGName to add to %s: \np", |
a4e03fe5 | 2267 | doc: /* Give FILE additional name NEWNAME. Both args must be strings. |
8c1a1077 PJ |
2268 | Signals a `file-already-exists' error if a file NEWNAME already exists |
2269 | unless optional third argument OK-IF-ALREADY-EXISTS is non-nil. | |
2270 | A number as third arg means request confirmation if NEWNAME already exists. | |
2271 | This is what happens in interactive use with M-x. */) | |
2272 | (file, newname, ok_if_already_exists) | |
3b7f6e60 | 2273 | Lisp_Object file, newname, ok_if_already_exists; |
570d7624 | 2274 | { |
32f4334d | 2275 | Lisp_Object handler; |
b1d1b865 RS |
2276 | Lisp_Object encoded_file, encoded_newname; |
2277 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; | |
570d7624 | 2278 | |
b1d1b865 RS |
2279 | GCPRO4 (file, newname, encoded_file, encoded_newname); |
2280 | encoded_file = encoded_newname = Qnil; | |
b7826503 PJ |
2281 | CHECK_STRING (file); |
2282 | CHECK_STRING (newname); | |
3b7f6e60 | 2283 | file = Fexpand_file_name (file, Qnil); |
1ffc5c90 RS |
2284 | |
2285 | if (!NILP (Ffile_directory_p (newname))) | |
2286 | newname = Fexpand_file_name (Ffile_name_nondirectory (file), newname); | |
2287 | else | |
2288 | newname = Fexpand_file_name (newname, Qnil); | |
32f4334d RS |
2289 | |
2290 | /* If the file name has special constructs in it, | |
2291 | call the corresponding file handler. */ | |
3b7f6e60 | 2292 | handler = Ffind_file_name_handler (file, Qadd_name_to_file); |
32f4334d | 2293 | if (!NILP (handler)) |
3b7f6e60 | 2294 | RETURN_UNGCPRO (call4 (handler, Qadd_name_to_file, file, |
36712b0a | 2295 | newname, ok_if_already_exists)); |
32f4334d | 2296 | |
adc6741c RS |
2297 | /* If the new name has special constructs in it, |
2298 | call the corresponding file handler. */ | |
2299 | handler = Ffind_file_name_handler (newname, Qadd_name_to_file); | |
2300 | if (!NILP (handler)) | |
3b7f6e60 | 2301 | RETURN_UNGCPRO (call4 (handler, Qadd_name_to_file, file, |
adc6741c RS |
2302 | newname, ok_if_already_exists)); |
2303 | ||
b1d1b865 RS |
2304 | encoded_file = ENCODE_FILE (file); |
2305 | encoded_newname = ENCODE_FILE (newname); | |
2306 | ||
265a9e55 | 2307 | if (NILP (ok_if_already_exists) |
93c30b5f | 2308 | || INTEGERP (ok_if_already_exists)) |
2f868094 | 2309 | barf_or_query_if_file_exists (newname, "make it a new name", |
b8b29dc9 | 2310 | INTEGERP (ok_if_already_exists), 0, 0); |
5e570b75 | 2311 | |
d5db4077 KR |
2312 | unlink (SDATA (newname)); |
2313 | if (0 > link (SDATA (encoded_file), SDATA (encoded_newname))) | |
a9f2aeae | 2314 | report_file_error ("Adding new name", list2 (file, newname)); |
570d7624 JB |
2315 | |
2316 | UNGCPRO; | |
2317 | return Qnil; | |
2318 | } | |
2319 | ||
570d7624 | 2320 | DEFUN ("make-symbolic-link", Fmake_symbolic_link, Smake_symbolic_link, 2, 3, |
7c0f6118 | 2321 | "FMake symbolic link to file: \nGMake symbolic link to file %s: \np", |
68780e2a RS |
2322 | doc: /* Make a symbolic link to FILENAME, named LINKNAME. |
2323 | Both args must be strings. | |
8c1a1077 PJ |
2324 | Signals a `file-already-exists' error if a file LINKNAME already exists |
2325 | unless optional third argument OK-IF-ALREADY-EXISTS is non-nil. | |
2326 | A number as third arg means request confirmation if LINKNAME already exists. | |
2327 | This happens for interactive use with M-x. */) | |
2328 | (filename, linkname, ok_if_already_exists) | |
e5d77022 | 2329 | Lisp_Object filename, linkname, ok_if_already_exists; |
570d7624 | 2330 | { |
32f4334d | 2331 | Lisp_Object handler; |
b1d1b865 RS |
2332 | Lisp_Object encoded_filename, encoded_linkname; |
2333 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; | |
570d7624 | 2334 | |
b1d1b865 RS |
2335 | GCPRO4 (filename, linkname, encoded_filename, encoded_linkname); |
2336 | encoded_filename = encoded_linkname = Qnil; | |
b7826503 PJ |
2337 | CHECK_STRING (filename); |
2338 | CHECK_STRING (linkname); | |
d9bc1c99 RS |
2339 | /* If the link target has a ~, we must expand it to get |
2340 | a truly valid file name. Otherwise, do not expand; | |
2341 | we want to permit links to relative file names. */ | |
d5db4077 | 2342 | if (SREF (filename, 0) == '~') |
d9bc1c99 | 2343 | filename = Fexpand_file_name (filename, Qnil); |
1ffc5c90 RS |
2344 | |
2345 | if (!NILP (Ffile_directory_p (linkname))) | |
dac24db4 | 2346 | linkname = Fexpand_file_name (Ffile_name_nondirectory (filename), linkname); |
1ffc5c90 RS |
2347 | else |
2348 | linkname = Fexpand_file_name (linkname, Qnil); | |
32f4334d RS |
2349 | |
2350 | /* If the file name has special constructs in it, | |
2351 | call the corresponding file handler. */ | |
49307295 | 2352 | handler = Ffind_file_name_handler (filename, Qmake_symbolic_link); |
32f4334d | 2353 | if (!NILP (handler)) |
36712b0a KH |
2354 | RETURN_UNGCPRO (call4 (handler, Qmake_symbolic_link, filename, |
2355 | linkname, ok_if_already_exists)); | |
32f4334d | 2356 | |
adc6741c RS |
2357 | /* If the new link name has special constructs in it, |
2358 | call the corresponding file handler. */ | |
2359 | handler = Ffind_file_name_handler (linkname, Qmake_symbolic_link); | |
2360 | if (!NILP (handler)) | |
2361 | RETURN_UNGCPRO (call4 (handler, Qmake_symbolic_link, filename, | |
2362 | linkname, ok_if_already_exists)); | |
2363 | ||
e89b536d | 2364 | #ifdef S_IFLNK |
b1d1b865 RS |
2365 | encoded_filename = ENCODE_FILE (filename); |
2366 | encoded_linkname = ENCODE_FILE (linkname); | |
2367 | ||
265a9e55 | 2368 | if (NILP (ok_if_already_exists) |
93c30b5f | 2369 | || INTEGERP (ok_if_already_exists)) |
2f868094 | 2370 | barf_or_query_if_file_exists (linkname, "make it a link", |
b8b29dc9 | 2371 | INTEGERP (ok_if_already_exists), 0, 0); |
d5db4077 KR |
2372 | if (0 > symlink (SDATA (encoded_filename), |
2373 | SDATA (encoded_linkname))) | |
570d7624 JB |
2374 | { |
2375 | /* If we didn't complain already, silently delete existing file. */ | |
2376 | if (errno == EEXIST) | |
2377 | { | |
d5db4077 KR |
2378 | unlink (SDATA (encoded_linkname)); |
2379 | if (0 <= symlink (SDATA (encoded_filename), | |
2380 | SDATA (encoded_linkname))) | |
1a04498e KH |
2381 | { |
2382 | UNGCPRO; | |
2383 | return Qnil; | |
2384 | } | |
570d7624 JB |
2385 | } |
2386 | ||
a9f2aeae | 2387 | report_file_error ("Making symbolic link", list2 (filename, linkname)); |
570d7624 JB |
2388 | } |
2389 | UNGCPRO; | |
2390 | return Qnil; | |
e89b536d MA |
2391 | |
2392 | #else | |
2393 | UNGCPRO; | |
2394 | xsignal1 (Qfile_error, build_string ("Symbolic links are not supported")); | |
2395 | ||
570d7624 | 2396 | #endif /* S_IFLNK */ |
e89b536d | 2397 | } |
570d7624 | 2398 | |
570d7624 JB |
2399 | \f |
2400 | DEFUN ("file-name-absolute-p", Ffile_name_absolute_p, Sfile_name_absolute_p, | |
2401 | 1, 1, 0, | |
8c1a1077 PJ |
2402 | doc: /* Return t if file FILENAME specifies an absolute file name. |
2403 | On Unix, this is a name starting with a `/' or a `~'. */) | |
570d7624 JB |
2404 | (filename) |
2405 | Lisp_Object filename; | |
2406 | { | |
b7826503 | 2407 | CHECK_STRING (filename); |
c70a4df6 | 2408 | return file_name_absolute_p (SDATA (filename)) ? Qt : Qnil; |
570d7624 | 2409 | } |
3beeedfe RS |
2410 | \f |
2411 | /* Return nonzero if file FILENAME exists and can be executed. */ | |
2412 | ||
2413 | static int | |
2414 | check_executable (filename) | |
2415 | char *filename; | |
2416 | { | |
3be3c08e RS |
2417 | #ifdef DOS_NT |
2418 | int len = strlen (filename); | |
2419 | char *suffix; | |
2420 | struct stat st; | |
2421 | if (stat (filename, &st) < 0) | |
2422 | return 0; | |
34ead71a | 2423 | #if defined (WINDOWSNT) || (defined (MSDOS) && __DJGPP__ > 1) |
199607e4 RS |
2424 | return ((st.st_mode & S_IEXEC) != 0); |
2425 | #else | |
3be3c08e RS |
2426 | return (S_ISREG (st.st_mode) |
2427 | && len >= 5 | |
05131107 JR |
2428 | && (xstrcasecmp ((suffix = filename + len-4), ".com") == 0 |
2429 | || xstrcasecmp (suffix, ".exe") == 0 | |
2430 | || xstrcasecmp (suffix, ".bat") == 0) | |
2dc3be7e | 2431 | || (st.st_mode & S_IFMT) == S_IFDIR); |
199607e4 | 2432 | #endif /* not WINDOWSNT */ |
3be3c08e | 2433 | #else /* not DOS_NT */ |
de0be7dd RS |
2434 | #ifdef HAVE_EUIDACCESS |
2435 | return (euidaccess (filename, 1) >= 0); | |
3beeedfe RS |
2436 | #else |
2437 | /* Access isn't quite right because it uses the real uid | |
2438 | and we really want to test with the effective uid. | |
2439 | But Unix doesn't give us a right way to do it. */ | |
2440 | return (access (filename, 1) >= 0); | |
2441 | #endif | |
3be3c08e | 2442 | #endif /* not DOS_NT */ |
3beeedfe RS |
2443 | } |
2444 | ||
2445 | /* Return nonzero if file FILENAME exists and can be written. */ | |
2446 | ||
2447 | static int | |
2448 | check_writable (filename) | |
2449 | char *filename; | |
2450 | { | |
3be3c08e RS |
2451 | #ifdef MSDOS |
2452 | struct stat st; | |
2453 | if (stat (filename, &st) < 0) | |
2454 | return 0; | |
2455 | return (st.st_mode & S_IWRITE || (st.st_mode & S_IFMT) == S_IFDIR); | |
2456 | #else /* not MSDOS */ | |
41f3fb38 KH |
2457 | #ifdef HAVE_EUIDACCESS |
2458 | return (euidaccess (filename, 2) >= 0); | |
3beeedfe RS |
2459 | #else |
2460 | /* Access isn't quite right because it uses the real uid | |
2461 | and we really want to test with the effective uid. | |
2462 | But Unix doesn't give us a right way to do it. | |
2463 | Opening with O_WRONLY could work for an ordinary file, | |
2464 | but would lose for directories. */ | |
2465 | return (access (filename, 2) >= 0); | |
2466 | #endif | |
3be3c08e | 2467 | #endif /* not MSDOS */ |
3beeedfe | 2468 | } |
570d7624 JB |
2469 | |
2470 | DEFUN ("file-exists-p", Ffile_exists_p, Sfile_exists_p, 1, 1, 0, | |
68780e2a RS |
2471 | doc: /* Return t if file FILENAME exists (whether or not you can read it.) |
2472 | See also `file-readable-p' and `file-attributes'. | |
2473 | This returns nil for a symlink to a nonexistent file. | |
2474 | Use `file-symlink-p' to test for such links. */) | |
8c1a1077 | 2475 | (filename) |
570d7624 JB |
2476 | Lisp_Object filename; |
2477 | { | |
199607e4 | 2478 | Lisp_Object absname; |
32f4334d | 2479 | Lisp_Object handler; |
4018b5ef | 2480 | struct stat statbuf; |
570d7624 | 2481 | |
b7826503 | 2482 | CHECK_STRING (filename); |
199607e4 | 2483 | absname = Fexpand_file_name (filename, Qnil); |
32f4334d RS |
2484 | |
2485 | /* If the file name has special constructs in it, | |
2486 | call the corresponding file handler. */ | |
199607e4 | 2487 | handler = Ffind_file_name_handler (absname, Qfile_exists_p); |
32f4334d | 2488 | if (!NILP (handler)) |
199607e4 | 2489 | return call2 (handler, Qfile_exists_p, absname); |
32f4334d | 2490 | |
b1d1b865 RS |
2491 | absname = ENCODE_FILE (absname); |
2492 | ||
d5db4077 | 2493 | return (stat (SDATA (absname), &statbuf) >= 0) ? Qt : Qnil; |
570d7624 JB |
2494 | } |
2495 | ||
2496 | DEFUN ("file-executable-p", Ffile_executable_p, Sfile_executable_p, 1, 1, 0, | |
8c1a1077 PJ |
2497 | doc: /* Return t if FILENAME can be executed by you. |
2498 | For a directory, this means you can access files in that directory. */) | |
2499 | (filename) | |
2500 | Lisp_Object filename; | |
570d7624 | 2501 | { |
199607e4 | 2502 | Lisp_Object absname; |
32f4334d | 2503 | Lisp_Object handler; |
570d7624 | 2504 | |
b7826503 | 2505 | CHECK_STRING (filename); |
199607e4 | 2506 | absname = Fexpand_file_name (filename, Qnil); |
32f4334d RS |
2507 | |
2508 | /* If the file name has special constructs in it, | |
2509 | call the corresponding file handler. */ | |
199607e4 | 2510 | handler = Ffind_file_name_handler (absname, Qfile_executable_p); |
32f4334d | 2511 | if (!NILP (handler)) |
199607e4 | 2512 | return call2 (handler, Qfile_executable_p, absname); |
32f4334d | 2513 | |
b1d1b865 RS |
2514 | absname = ENCODE_FILE (absname); |
2515 | ||
d5db4077 | 2516 | return (check_executable (SDATA (absname)) ? Qt : Qnil); |
570d7624 JB |
2517 | } |
2518 | ||
2519 | DEFUN ("file-readable-p", Ffile_readable_p, Sfile_readable_p, 1, 1, 0, | |
8c1a1077 PJ |
2520 | doc: /* Return t if file FILENAME exists and you can read it. |
2521 | See also `file-exists-p' and `file-attributes'. */) | |
2522 | (filename) | |
570d7624 JB |
2523 | Lisp_Object filename; |
2524 | { | |
199607e4 | 2525 | Lisp_Object absname; |
32f4334d | 2526 | Lisp_Object handler; |
4018b5ef | 2527 | int desc; |
bb369dc6 RS |
2528 | int flags; |
2529 | struct stat statbuf; | |
570d7624 | 2530 | |
b7826503 | 2531 | CHECK_STRING (filename); |
199607e4 | 2532 | absname = Fexpand_file_name (filename, Qnil); |
32f4334d RS |
2533 | |
2534 | /* If the file name has special constructs in it, | |
2535 | call the corresponding file handler. */ | |
199607e4 | 2536 | handler = Ffind_file_name_handler (absname, Qfile_readable_p); |
32f4334d | 2537 | if (!NILP (handler)) |
199607e4 | 2538 | return call2 (handler, Qfile_readable_p, absname); |
32f4334d | 2539 | |
b1d1b865 RS |
2540 | absname = ENCODE_FILE (absname); |
2541 | ||
fb4c6c96 AC |
2542 | #if defined(DOS_NT) || defined(macintosh) |
2543 | /* Under MS-DOS, Windows, and Macintosh, open does not work for | |
2544 | directories. */ | |
d5db4077 | 2545 | if (access (SDATA (absname), 0) == 0) |
a8a7d065 RS |
2546 | return Qt; |
2547 | return Qnil; | |
fb4c6c96 | 2548 | #else /* not DOS_NT and not macintosh */ |
bb369dc6 RS |
2549 | flags = O_RDONLY; |
2550 | #if defined (S_ISFIFO) && defined (O_NONBLOCK) | |
2551 | /* Opening a fifo without O_NONBLOCK can wait. | |
2552 | We don't want to wait. But we don't want to mess wth O_NONBLOCK | |
2553 | except in the case of a fifo, on a system which handles it. */ | |
d5db4077 | 2554 | desc = stat (SDATA (absname), &statbuf); |
bb369dc6 RS |
2555 | if (desc < 0) |
2556 | return Qnil; | |
2557 | if (S_ISFIFO (statbuf.st_mode)) | |
2558 | flags |= O_NONBLOCK; | |
2559 | #endif | |
d5db4077 | 2560 | desc = emacs_open (SDATA (absname), flags, 0); |
4018b5ef RS |
2561 | if (desc < 0) |
2562 | return Qnil; | |
68c45bf0 | 2563 | emacs_close (desc); |
4018b5ef | 2564 | return Qt; |
fb4c6c96 | 2565 | #endif /* not DOS_NT and not macintosh */ |
570d7624 JB |
2566 | } |
2567 | ||
f793dc6c RS |
2568 | /* Having this before file-symlink-p mysteriously caused it to be forgotten |
2569 | on the RT/PC. */ | |
2570 | DEFUN ("file-writable-p", Ffile_writable_p, Sfile_writable_p, 1, 1, 0, | |
8c1a1077 PJ |
2571 | doc: /* Return t if file FILENAME can be written or created by you. */) |
2572 | (filename) | |
f793dc6c RS |
2573 | Lisp_Object filename; |
2574 | { | |
b1d1b865 | 2575 | Lisp_Object absname, dir, encoded; |
f793dc6c RS |
2576 | Lisp_Object handler; |
2577 | struct stat statbuf; | |
2578 | ||
b7826503 | 2579 | CHECK_STRING (filename); |
199607e4 | 2580 | absname = Fexpand_file_name (filename, Qnil); |
f793dc6c RS |
2581 | |
2582 | /* If the file name has special constructs in it, | |
2583 | call the corresponding file handler. */ | |
199607e4 | 2584 | handler = Ffind_file_name_handler (absname, Qfile_writable_p); |
f793dc6c | 2585 | if (!NILP (handler)) |
199607e4 | 2586 | return call2 (handler, Qfile_writable_p, absname); |
f793dc6c | 2587 | |
b1d1b865 | 2588 | encoded = ENCODE_FILE (absname); |
d5db4077 KR |
2589 | if (stat (SDATA (encoded), &statbuf) >= 0) |
2590 | return (check_writable (SDATA (encoded)) | |
f793dc6c | 2591 | ? Qt : Qnil); |
b1d1b865 | 2592 | |
199607e4 | 2593 | dir = Ffile_name_directory (absname); |
f793dc6c RS |
2594 | #ifdef MSDOS |
2595 | if (!NILP (dir)) | |
2596 | dir = Fdirectory_file_name (dir); | |
2597 | #endif /* MSDOS */ | |
b1d1b865 RS |
2598 | |
2599 | dir = ENCODE_FILE (dir); | |
e3e8a75a GM |
2600 | #ifdef WINDOWSNT |
2601 | /* The read-only attribute of the parent directory doesn't affect | |
2602 | whether a file or directory can be created within it. Some day we | |
2603 | should check ACLs though, which do affect this. */ | |
d5db4077 | 2604 | if (stat (SDATA (dir), &statbuf) < 0) |
e3e8a75a GM |
2605 | return Qnil; |
2606 | return (statbuf.st_mode & S_IFMT) == S_IFDIR ? Qt : Qnil; | |
2607 | #else | |
d5db4077 | 2608 | return (check_writable (!NILP (dir) ? (char *) SDATA (dir) : "") |
f793dc6c | 2609 | ? Qt : Qnil); |
e3e8a75a | 2610 | #endif |
f793dc6c RS |
2611 | } |
2612 | \f | |
1f8653eb | 2613 | DEFUN ("access-file", Faccess_file, Saccess_file, 2, 2, 0, |
8c1a1077 PJ |
2614 | doc: /* Access file FILENAME, and get an error if that does not work. |
2615 | The second argument STRING is used in the error message. | |
a4e03fe5 | 2616 | If there is no error, returns nil. */) |
8c1a1077 | 2617 | (filename, string) |
1f8653eb RS |
2618 | Lisp_Object filename, string; |
2619 | { | |
49475635 | 2620 | Lisp_Object handler, encoded_filename, absname; |
1f8653eb RS |
2621 | int fd; |
2622 | ||
b7826503 | 2623 | CHECK_STRING (filename); |
49475635 EZ |
2624 | absname = Fexpand_file_name (filename, Qnil); |
2625 | ||
b7826503 | 2626 | CHECK_STRING (string); |
1f8653eb RS |
2627 | |
2628 | /* If the file name has special constructs in it, | |
2629 | call the corresponding file handler. */ | |
49475635 | 2630 | handler = Ffind_file_name_handler (absname, Qaccess_file); |
1f8653eb | 2631 | if (!NILP (handler)) |
49475635 | 2632 | return call3 (handler, Qaccess_file, absname, string); |
1f8653eb | 2633 | |
49475635 | 2634 | encoded_filename = ENCODE_FILE (absname); |
b1d1b865 | 2635 | |
d5db4077 | 2636 | fd = emacs_open (SDATA (encoded_filename), O_RDONLY, 0); |
1f8653eb | 2637 | if (fd < 0) |
d5db4077 | 2638 | report_file_error (SDATA (string), Fcons (filename, Qnil)); |
68c45bf0 | 2639 | emacs_close (fd); |
1f8653eb RS |
2640 | |
2641 | return Qnil; | |
2642 | } | |
2643 | \f | |
570d7624 | 2644 | DEFUN ("file-symlink-p", Ffile_symlink_p, Sfile_symlink_p, 1, 1, 0, |
8c1a1077 | 2645 | doc: /* Return non-nil if file FILENAME is the name of a symbolic link. |
1c353c74 | 2646 | The value is the link target, as a string. |
68780e2a RS |
2647 | Otherwise it returns nil. |
2648 | ||
2649 | This function returns t when given the name of a symlink that | |
2650 | points to a nonexistent file. */) | |
8c1a1077 | 2651 | (filename) |
570d7624 JB |
2652 | Lisp_Object filename; |
2653 | { | |
32f4334d | 2654 | Lisp_Object handler; |
570d7624 | 2655 | |
b7826503 | 2656 | CHECK_STRING (filename); |
570d7624 JB |
2657 | filename = Fexpand_file_name (filename, Qnil); |
2658 | ||
32f4334d RS |
2659 | /* If the file name has special constructs in it, |
2660 | call the corresponding file handler. */ | |
49307295 | 2661 | handler = Ffind_file_name_handler (filename, Qfile_symlink_p); |
32f4334d RS |
2662 | if (!NILP (handler)) |
2663 | return call2 (handler, Qfile_symlink_p, filename); | |
2664 | ||
5adcec23 JR |
2665 | #ifdef S_IFLNK |
2666 | { | |
2667 | char *buf; | |
2668 | int bufsize; | |
2669 | int valsize; | |
2670 | Lisp_Object val; | |
2671 | ||
b1d1b865 RS |
2672 | filename = ENCODE_FILE (filename); |
2673 | ||
81c3310d GM |
2674 | bufsize = 50; |
2675 | buf = NULL; | |
2676 | do | |
570d7624 | 2677 | { |
81c3310d GM |
2678 | bufsize *= 2; |
2679 | buf = (char *) xrealloc (buf, bufsize); | |
570d7624 | 2680 | bzero (buf, bufsize); |
efdc16c9 | 2681 | |
81c3310d | 2682 | errno = 0; |
d5db4077 | 2683 | valsize = readlink (SDATA (filename), buf, bufsize); |
bcdd93b3 GM |
2684 | if (valsize == -1) |
2685 | { | |
81c3310d GM |
2686 | #ifdef ERANGE |
2687 | /* HP-UX reports ERANGE if buffer is too small. */ | |
bcdd93b3 GM |
2688 | if (errno == ERANGE) |
2689 | valsize = bufsize; | |
2690 | else | |
81c3310d | 2691 | #endif |
bcdd93b3 GM |
2692 | { |
2693 | xfree (buf); | |
2694 | return Qnil; | |
2695 | } | |
81c3310d | 2696 | } |
570d7624 | 2697 | } |
81c3310d | 2698 | while (valsize >= bufsize); |
efdc16c9 | 2699 | |
570d7624 | 2700 | val = make_string (buf, valsize); |
69ac1891 GM |
2701 | if (buf[0] == '/' && index (buf, ':')) |
2702 | val = concat2 (build_string ("/:"), val); | |
9ac0d9e0 | 2703 | xfree (buf); |
cd913586 KH |
2704 | val = DECODE_FILE (val); |
2705 | return val; | |
5adcec23 | 2706 | } |
570d7624 JB |
2707 | #else /* not S_IFLNK */ |
2708 | return Qnil; | |
2709 | #endif /* not S_IFLNK */ | |
2710 | } | |
2711 | ||
570d7624 | 2712 | DEFUN ("file-directory-p", Ffile_directory_p, Sfile_directory_p, 1, 1, 0, |
8c1a1077 PJ |
2713 | doc: /* Return t if FILENAME names an existing directory. |
2714 | Symbolic links to directories count as directories. | |
2715 | See `file-symlink-p' to distinguish symlinks. */) | |
2716 | (filename) | |
570d7624 JB |
2717 | Lisp_Object filename; |
2718 | { | |
199607e4 | 2719 | register Lisp_Object absname; |
570d7624 | 2720 | struct stat st; |
32f4334d | 2721 | Lisp_Object handler; |
570d7624 | 2722 | |
199607e4 | 2723 | absname = expand_and_dir_to_file (filename, current_buffer->directory); |
570d7624 | 2724 | |
32f4334d RS |
2725 | /* If the file name has special constructs in it, |
2726 | call the corresponding file handler. */ | |
199607e4 | 2727 | handler = Ffind_file_name_handler (absname, Qfile_directory_p); |
32f4334d | 2728 | if (!NILP (handler)) |
199607e4 | 2729 | return call2 (handler, Qfile_directory_p, absname); |
32f4334d | 2730 | |
b1d1b865 RS |
2731 | absname = ENCODE_FILE (absname); |
2732 | ||
d5db4077 | 2733 | if (stat (SDATA (absname), &st) < 0) |
570d7624 JB |
2734 | return Qnil; |
2735 | return (st.st_mode & S_IFMT) == S_IFDIR ? Qt : Qnil; | |
2736 | } | |
2737 | ||
b72dea2a | 2738 | DEFUN ("file-accessible-directory-p", Ffile_accessible_directory_p, Sfile_accessible_directory_p, 1, 1, 0, |
e385ec41 RS |
2739 | doc: /* Return t if file FILENAME names a directory you can open. |
2740 | For the value to be t, FILENAME must specify the name of a directory as a file, | |
2741 | and the directory must allow you to open files in it. In order to use a | |
8c1a1077 PJ |
2742 | directory as a buffer's current directory, this predicate must return true. |
2743 | A directory name spec may be given instead; then the value is t | |
2744 | if the directory so specified exists and really is a readable and | |
2745 | searchable directory. */) | |
2746 | (filename) | |
b72dea2a JB |
2747 | Lisp_Object filename; |
2748 | { | |
32f4334d | 2749 | Lisp_Object handler; |
1a04498e | 2750 | int tem; |
d26859eb | 2751 | struct gcpro gcpro1; |
32f4334d RS |
2752 | |
2753 | /* If the file name has special constructs in it, | |
2754 | call the corresponding file handler. */ | |
49307295 | 2755 | handler = Ffind_file_name_handler (filename, Qfile_accessible_directory_p); |
32f4334d RS |
2756 | if (!NILP (handler)) |
2757 | return call2 (handler, Qfile_accessible_directory_p, filename); | |
2758 | ||
d26859eb | 2759 | GCPRO1 (filename); |
1a04498e KH |
2760 | tem = (NILP (Ffile_directory_p (filename)) |
2761 | || NILP (Ffile_executable_p (filename))); | |
d26859eb | 2762 | UNGCPRO; |
1a04498e | 2763 | return tem ? Qnil : Qt; |
b72dea2a JB |
2764 | } |
2765 | ||
f793dc6c | 2766 | DEFUN ("file-regular-p", Ffile_regular_p, Sfile_regular_p, 1, 1, 0, |
19a9c3b7 LH |
2767 | doc: /* Return t if FILENAME names a regular file. |
2768 | This is the sort of file that holds an ordinary stream of data bytes. | |
2769 | Symbolic links to regular files count as regular files. | |
2770 | See `file-symlink-p' to distinguish symlinks. */) | |
8c1a1077 | 2771 | (filename) |
f793dc6c RS |
2772 | Lisp_Object filename; |
2773 | { | |
199607e4 | 2774 | register Lisp_Object absname; |
f793dc6c RS |
2775 | struct stat st; |
2776 | Lisp_Object handler; | |
2777 | ||
199607e4 | 2778 | absname = expand_and_dir_to_file (filename, current_buffer->directory); |
f793dc6c RS |
2779 | |
2780 | /* If the file name has special constructs in it, | |
2781 | call the corresponding file handler. */ | |
199607e4 | 2782 | handler = Ffind_file_name_handler (absname, Qfile_regular_p); |
f793dc6c | 2783 | if (!NILP (handler)) |
199607e4 | 2784 | return call2 (handler, Qfile_regular_p, absname); |
f793dc6c | 2785 | |
b1d1b865 RS |
2786 | absname = ENCODE_FILE (absname); |
2787 | ||
c1c4693e RS |
2788 | #ifdef WINDOWSNT |
2789 | { | |
2790 | int result; | |
2791 | Lisp_Object tem = Vw32_get_true_file_attributes; | |
2792 | ||
2793 | /* Tell stat to use expensive method to get accurate info. */ | |
2794 | Vw32_get_true_file_attributes = Qt; | |
d5db4077 | 2795 | result = stat (SDATA (absname), &st); |
c1c4693e RS |
2796 | Vw32_get_true_file_attributes = tem; |
2797 | ||
2798 | if (result < 0) | |
2799 | return Qnil; | |
2800 | return (st.st_mode & S_IFMT) == S_IFREG ? Qt : Qnil; | |
2801 | } | |
2802 | #else | |
d5db4077 | 2803 | if (stat (SDATA (absname), &st) < 0) |
f793dc6c RS |
2804 | return Qnil; |
2805 | return (st.st_mode & S_IFMT) == S_IFREG ? Qt : Qnil; | |
c1c4693e | 2806 | #endif |
f793dc6c RS |
2807 | } |
2808 | \f | |
570d7624 | 2809 | DEFUN ("file-modes", Ffile_modes, Sfile_modes, 1, 1, 0, |
d4a42098 KS |
2810 | doc: /* Return mode bits of file named FILENAME, as an integer. |
2811 | Return nil, if file does not exist or is not accessible. */) | |
8c1a1077 | 2812 | (filename) |
570d7624 JB |
2813 | Lisp_Object filename; |
2814 | { | |
199607e4 | 2815 | Lisp_Object absname; |
570d7624 | 2816 | struct stat st; |
32f4334d | 2817 | Lisp_Object handler; |
570d7624 | 2818 | |
199607e4 | 2819 | absname = expand_and_dir_to_file (filename, current_buffer->directory); |
570d7624 | 2820 | |
32f4334d RS |
2821 | /* If the file name has special constructs in it, |
2822 | call the corresponding file handler. */ | |
199607e4 | 2823 | handler = Ffind_file_name_handler (absname, Qfile_modes); |
32f4334d | 2824 | if (!NILP (handler)) |
199607e4 | 2825 | return call2 (handler, Qfile_modes, absname); |
32f4334d | 2826 | |
b1d1b865 RS |
2827 | absname = ENCODE_FILE (absname); |
2828 | ||
d5db4077 | 2829 | if (stat (SDATA (absname), &st) < 0) |
570d7624 | 2830 | return Qnil; |
34ead71a | 2831 | #if defined (MSDOS) && __DJGPP__ < 2 |
d5db4077 | 2832 | if (check_executable (SDATA (absname))) |
3be3c08e | 2833 | st.st_mode |= S_IEXEC; |
34ead71a | 2834 | #endif /* MSDOS && __DJGPP__ < 2 */ |
3ace87e3 | 2835 | |
570d7624 JB |
2836 | return make_number (st.st_mode & 07777); |
2837 | } | |
2838 | ||
09fbdf6c MC |
2839 | DEFUN ("set-file-modes", Fset_file_modes, Sset_file_modes, 2, 2, |
2840 | "(let ((file (read-file-name \"File: \"))) \ | |
2841 | (list file (read-file-modes nil file)))", | |
8c1a1077 PJ |
2842 | doc: /* Set mode bits of file named FILENAME to MODE (an integer). |
2843 | Only the 12 low bits of MODE are used. */) | |
570d7624 JB |
2844 | (filename, mode) |
2845 | Lisp_Object filename, mode; | |
2846 | { | |
b1d1b865 | 2847 | Lisp_Object absname, encoded_absname; |
32f4334d | 2848 | Lisp_Object handler; |
570d7624 | 2849 | |
199607e4 | 2850 | absname = Fexpand_file_name (filename, current_buffer->directory); |
b7826503 | 2851 | CHECK_NUMBER (mode); |
570d7624 | 2852 | |
32f4334d RS |
2853 | /* If the file name has special constructs in it, |
2854 | call the corresponding file handler. */ | |
199607e4 | 2855 | handler = Ffind_file_name_handler (absname, Qset_file_modes); |
32f4334d | 2856 | if (!NILP (handler)) |
199607e4 | 2857 | return call3 (handler, Qset_file_modes, absname, mode); |
32f4334d | 2858 | |
b1d1b865 RS |
2859 | encoded_absname = ENCODE_FILE (absname); |
2860 | ||
d5db4077 | 2861 | if (chmod (SDATA (encoded_absname), XINT (mode)) < 0) |
199607e4 | 2862 | report_file_error ("Doing chmod", Fcons (absname, Qnil)); |
570d7624 JB |
2863 | |
2864 | return Qnil; | |
2865 | } | |
2866 | ||
c24e9a53 | 2867 | DEFUN ("set-default-file-modes", Fset_default_file_modes, Sset_default_file_modes, 1, 1, 0, |
8c1a1077 PJ |
2868 | doc: /* Set the file permission bits for newly created files. |
2869 | The argument MODE should be an integer; only the low 9 bits are used. | |
2870 | This setting is inherited by subprocesses. */) | |
2871 | (mode) | |
5f85ea58 | 2872 | Lisp_Object mode; |
36a8c287 | 2873 | { |
b7826503 | 2874 | CHECK_NUMBER (mode); |
199607e4 | 2875 | |
5f85ea58 | 2876 | umask ((~ XINT (mode)) & 0777); |
36a8c287 JB |
2877 | |
2878 | return Qnil; | |
2879 | } | |
2880 | ||
c24e9a53 | 2881 | DEFUN ("default-file-modes", Fdefault_file_modes, Sdefault_file_modes, 0, 0, 0, |
8c1a1077 PJ |
2882 | doc: /* Return the default file protection for created files. |
2883 | The value is an integer. */) | |
2884 | () | |
36a8c287 | 2885 | { |
5f85ea58 RS |
2886 | int realmask; |
2887 | Lisp_Object value; | |
36a8c287 | 2888 | |
5f85ea58 RS |
2889 | realmask = umask (0); |
2890 | umask (realmask); | |
36a8c287 | 2891 | |
46283abe | 2892 | XSETINT (value, (~ realmask) & 0777); |
5f85ea58 | 2893 | return value; |
36a8c287 | 2894 | } |
819da85b EZ |
2895 | \f |
2896 | extern int lisp_time_argument P_ ((Lisp_Object, time_t *, int *)); | |
2897 | ||
2898 | DEFUN ("set-file-times", Fset_file_times, Sset_file_times, 1, 2, 0, | |
2899 | doc: /* Set times of file FILENAME to TIME. | |
2900 | Set both access and modification times. | |
2901 | Return t on success, else nil. | |
2902 | Use the current time if TIME is nil. TIME is in the format of | |
2903 | `current-time'. */) | |
2904 | (filename, time) | |
2905 | Lisp_Object filename, time; | |
2906 | { | |
2907 | Lisp_Object absname, encoded_absname; | |
2908 | Lisp_Object handler; | |
2909 | time_t sec; | |
2910 | int usec; | |
2911 | ||
2912 | if (! lisp_time_argument (time, &sec, &usec)) | |
2913 | error ("Invalid time specification"); | |
2914 | ||
2915 | absname = Fexpand_file_name (filename, current_buffer->directory); | |
2916 | ||
2917 | /* If the file name has special constructs in it, | |
2918 | call the corresponding file handler. */ | |
2919 | handler = Ffind_file_name_handler (absname, Qset_file_times); | |
2920 | if (!NILP (handler)) | |
2921 | return call3 (handler, Qset_file_times, absname, time); | |
2922 | ||
2923 | encoded_absname = ENCODE_FILE (absname); | |
5df5e07c | 2924 | |
819da85b EZ |
2925 | { |
2926 | EMACS_TIME t; | |
2927 | ||
2928 | EMACS_SET_SECS (t, sec); | |
2929 | EMACS_SET_USECS (t, usec); | |
2930 | ||
2931 | if (set_file_times (SDATA (encoded_absname), t, t)) | |
2932 | { | |
2933 | #ifdef DOS_NT | |
2934 | struct stat st; | |
2935 | ||
2936 | /* Setting times on a directory always fails. */ | |
2937 | if (stat (SDATA (encoded_absname), &st) == 0 | |
2938 | && (st.st_mode & S_IFMT) == S_IFDIR) | |
2939 | return Qnil; | |
2940 | #endif | |
2941 | report_file_error ("Setting file times", Fcons (absname, Qnil)); | |
2942 | return Qnil; | |
2943 | } | |
2944 | } | |
5df5e07c | 2945 | |
819da85b EZ |
2946 | return Qt; |
2947 | } | |
f793dc6c | 2948 | \f |
697c17a2 | 2949 | #ifdef HAVE_SYNC |
85ffea93 | 2950 | DEFUN ("unix-sync", Funix_sync, Sunix_sync, 0, 0, "", |
8c1a1077 PJ |
2951 | doc: /* Tell Unix to finish all pending disk updates. */) |
2952 | () | |
85ffea93 RS |
2953 | { |
2954 | sync (); | |
2955 | return Qnil; | |
2956 | } | |
2957 | ||
697c17a2 | 2958 | #endif /* HAVE_SYNC */ |
85ffea93 | 2959 | |
570d7624 | 2960 | DEFUN ("file-newer-than-file-p", Ffile_newer_than_file_p, Sfile_newer_than_file_p, 2, 2, 0, |
8c1a1077 PJ |
2961 | doc: /* Return t if file FILE1 is newer than file FILE2. |
2962 | If FILE1 does not exist, the answer is nil; | |
2963 | otherwise, if FILE2 does not exist, the answer is t. */) | |
2964 | (file1, file2) | |
570d7624 JB |
2965 | Lisp_Object file1, file2; |
2966 | { | |
199607e4 | 2967 | Lisp_Object absname1, absname2; |
570d7624 JB |
2968 | struct stat st; |
2969 | int mtime1; | |
32f4334d | 2970 | Lisp_Object handler; |
09121adc | 2971 | struct gcpro gcpro1, gcpro2; |
570d7624 | 2972 | |
b7826503 PJ |
2973 | CHECK_STRING (file1); |
2974 | CHECK_STRING (file2); | |
570d7624 | 2975 | |
199607e4 RS |
2976 | absname1 = Qnil; |
2977 | GCPRO2 (absname1, file2); | |
2978 | absname1 = expand_and_dir_to_file (file1, current_buffer->directory); | |
2979 | absname2 = expand_and_dir_to_file (file2, current_buffer->directory); | |
09121adc | 2980 | UNGCPRO; |
570d7624 | 2981 | |
32f4334d RS |
2982 | /* If the file name has special constructs in it, |
2983 | call the corresponding file handler. */ | |
199607e4 | 2984 | handler = Ffind_file_name_handler (absname1, Qfile_newer_than_file_p); |
51cf6d37 | 2985 | if (NILP (handler)) |
199607e4 | 2986 | handler = Ffind_file_name_handler (absname2, Qfile_newer_than_file_p); |
32f4334d | 2987 | if (!NILP (handler)) |
199607e4 | 2988 | return call3 (handler, Qfile_newer_than_file_p, absname1, absname2); |
32f4334d | 2989 | |
b1d1b865 RS |
2990 | GCPRO2 (absname1, absname2); |
2991 | absname1 = ENCODE_FILE (absname1); | |
2992 | absname2 = ENCODE_FILE (absname2); | |
2993 | UNGCPRO; | |
2994 | ||
d5db4077 | 2995 | if (stat (SDATA (absname1), &st) < 0) |
570d7624 JB |
2996 | return Qnil; |
2997 | ||
2998 | mtime1 = st.st_mtime; | |
2999 | ||
d5db4077 | 3000 | if (stat (SDATA (absname2), &st) < 0) |
570d7624 JB |
3001 | return Qt; |
3002 | ||
3003 | return (mtime1 > st.st_mtime) ? Qt : Qnil; | |
3004 | } | |
3005 | \f | |
5e570b75 | 3006 | #ifdef DOS_NT |
4c3c22f3 | 3007 | Lisp_Object Qfind_buffer_file_type; |
5e570b75 | 3008 | #endif /* DOS_NT */ |
4c3c22f3 | 3009 | |
6fdaa9a0 KH |
3010 | #ifndef READ_BUF_SIZE |
3011 | #define READ_BUF_SIZE (64 << 10) | |
3012 | #endif | |
3013 | ||
98a7d268 KH |
3014 | extern void adjust_markers_for_delete P_ ((int, int, int, int)); |
3015 | ||
3016 | /* This function is called after Lisp functions to decide a coding | |
3017 | system are called, or when they cause an error. Before they are | |
3018 | called, the current buffer is set unibyte and it contains only a | |
3019 | newly inserted text (thus the buffer was empty before the | |
3020 | insertion). | |
3021 | ||
3022 | The functions may set markers, overlays, text properties, or even | |
3023 | alter the buffer contents, change the current buffer. | |
3024 | ||
3025 | Here, we reset all those changes by: | |
3026 | o set back the current buffer. | |
3027 | o move all markers and overlays to BEG. | |
3028 | o remove all text properties. | |
3029 | o set back the buffer multibyteness. */ | |
f736ffbf KH |
3030 | |
3031 | static Lisp_Object | |
98a7d268 KH |
3032 | decide_coding_unwind (unwind_data) |
3033 | Lisp_Object unwind_data; | |
f736ffbf | 3034 | { |
98a7d268 | 3035 | Lisp_Object multibyte, undo_list, buffer; |
f736ffbf | 3036 | |
98a7d268 KH |
3037 | multibyte = XCAR (unwind_data); |
3038 | unwind_data = XCDR (unwind_data); | |
3039 | undo_list = XCAR (unwind_data); | |
3040 | buffer = XCDR (unwind_data); | |
3041 | ||
3042 | if (current_buffer != XBUFFER (buffer)) | |
3043 | set_buffer_internal (XBUFFER (buffer)); | |
3044 | adjust_markers_for_delete (BEG, BEG_BYTE, Z, Z_BYTE); | |
3045 | adjust_overlays_for_delete (BEG, Z - BEG); | |
3046 | BUF_INTERVALS (current_buffer) = 0; | |
3047 | TEMP_SET_PT_BOTH (BEG, BEG_BYTE); | |
3048 | ||
3049 | /* Now we are safe to change the buffer's multibyteness directly. */ | |
3050 | current_buffer->enable_multibyte_characters = multibyte; | |
3051 | current_buffer->undo_list = undo_list; | |
f736ffbf KH |
3052 | |
3053 | return Qnil; | |
3054 | } | |
3055 | ||
55587f8a | 3056 | |
1b978129 | 3057 | /* Used to pass values from insert-file-contents to read_non_regular. */ |
55587f8a | 3058 | |
1b978129 GM |
3059 | static int non_regular_fd; |
3060 | static int non_regular_inserted; | |
3061 | static int non_regular_nbytes; | |
55587f8a | 3062 | |
55587f8a | 3063 | |
1b978129 GM |
3064 | /* Read from a non-regular file. |
3065 | Read non_regular_trytry bytes max from non_regular_fd. | |
3066 | Non_regular_inserted specifies where to put the read bytes. | |
3067 | Value is the number of bytes read. */ | |
55587f8a GM |
3068 | |
3069 | static Lisp_Object | |
1b978129 | 3070 | read_non_regular () |
55587f8a | 3071 | { |
1b978129 | 3072 | int nbytes; |
efdc16c9 | 3073 | |
1b978129 GM |
3074 | immediate_quit = 1; |
3075 | QUIT; | |
3076 | nbytes = emacs_read (non_regular_fd, | |
28c3eb5a | 3077 | BEG_ADDR + PT_BYTE - BEG_BYTE + non_regular_inserted, |
1b978129 | 3078 | non_regular_nbytes); |
1b978129 GM |
3079 | immediate_quit = 0; |
3080 | return make_number (nbytes); | |
3081 | } | |
55587f8a | 3082 | |
d0e2444e | 3083 | |
1b978129 GM |
3084 | /* Condition-case handler used when reading from non-regular files |
3085 | in insert-file-contents. */ | |
3086 | ||
3087 | static Lisp_Object | |
3088 | read_non_regular_quit () | |
3089 | { | |
55587f8a GM |
3090 | return Qnil; |
3091 | } | |
3092 | ||
3093 | ||
570d7624 | 3094 | DEFUN ("insert-file-contents", Finsert_file_contents, Sinsert_file_contents, |
8c1a1077 PJ |
3095 | 1, 5, 0, |
3096 | doc: /* Insert contents of file FILENAME after point. | |
cf6d2357 | 3097 | Returns list of absolute file name and number of characters inserted. |
6f2528d8 MR |
3098 | If second argument VISIT is non-nil, the buffer's visited filename and |
3099 | last save file modtime are set, and it is marked unmodified. If | |
3100 | visiting and the file does not exist, visiting is completed before the | |
3101 | error is signaled. | |
3102 | ||
3103 | The optional third and fourth arguments BEG and END specify what portion | |
3104 | of the file to insert. These arguments count bytes in the file, not | |
3105 | characters in the buffer. If VISIT is non-nil, BEG and END must be nil. | |
3106 | ||
3107 | If optional fifth argument REPLACE is non-nil, replace the current | |
3108 | buffer contents (in the accessible portion) with the file contents. | |
3109 | This is better than simply deleting and inserting the whole thing | |
3110 | because (1) it preserves some marker positions and (2) it puts less data | |
3111 | in the undo list. When REPLACE is non-nil, the second return value is | |
3112 | the number of characters that replace previous buffer contents. | |
3113 | ||
3114 | This function does code conversion according to the value of | |
3115 | `coding-system-for-read' or `file-coding-system-alist', and sets the | |
3116 | variable `last-coding-system-used' to the coding system actually used. */) | |
8c1a1077 | 3117 | (filename, visit, beg, end, replace) |
3d0387c0 | 3118 | Lisp_Object filename, visit, beg, end, replace; |
570d7624 JB |
3119 | { |
3120 | struct stat st; | |
3121 | register int fd; | |
ec7adf26 | 3122 | int inserted = 0; |
18a9f8d9 | 3123 | int nochange = 0; |
570d7624 | 3124 | register int how_much; |
6fdaa9a0 | 3125 | register int unprocessed; |
331379bf | 3126 | int count = SPECPDL_INDEX (); |
6f2528d8 MR |
3127 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5; |
3128 | Lisp_Object handler, val, insval, orig_filename, old_undo; | |
d6a3cc15 | 3129 | Lisp_Object p; |
6bbd7a29 | 3130 | int total = 0; |
53c34c46 | 3131 | int not_regular = 0; |
feb9dc27 | 3132 | unsigned char read_buf[READ_BUF_SIZE]; |
6fdaa9a0 | 3133 | struct coding_system coding; |
3dbcf3f6 | 3134 | unsigned char buffer[1 << 14]; |
727a0b4a | 3135 | int replace_handled = 0; |
ec7adf26 | 3136 | int set_coding_system = 0; |
db327c7e | 3137 | Lisp_Object coding_system; |
1b978129 | 3138 | int read_quit = 0; |
490ee853 | 3139 | Lisp_Object old_Vdeactivate_mark = Vdeactivate_mark; |
68780e2a | 3140 | int we_locked_file = 0; |
32f4334d | 3141 | |
95385625 RS |
3142 | if (current_buffer->base_buffer && ! NILP (visit)) |
3143 | error ("Cannot do file visiting in an indirect buffer"); | |
3144 | ||
3145 | if (!NILP (current_buffer->read_only)) | |
3146 | Fbarf_if_buffer_read_only (); | |
3147 | ||
32f4334d | 3148 | val = Qnil; |
d6a3cc15 | 3149 | p = Qnil; |
b1d1b865 | 3150 | orig_filename = Qnil; |
6f2528d8 | 3151 | old_undo = Qnil; |
32f4334d | 3152 | |
6f2528d8 | 3153 | GCPRO5 (filename, val, p, orig_filename, old_undo); |
570d7624 | 3154 | |
b7826503 | 3155 | CHECK_STRING (filename); |
570d7624 JB |
3156 | filename = Fexpand_file_name (filename, Qnil); |
3157 | ||
1c157f8d KH |
3158 | /* The value Qnil means that the coding system is not yet |
3159 | decided. */ | |
3160 | coding_system = Qnil; | |
3161 | ||
32f4334d RS |
3162 | /* If the file name has special constructs in it, |
3163 | call the corresponding file handler. */ | |
49307295 | 3164 | handler = Ffind_file_name_handler (filename, Qinsert_file_contents); |
32f4334d RS |
3165 | if (!NILP (handler)) |
3166 | { | |
3d0387c0 RS |
3167 | val = call6 (handler, Qinsert_file_contents, filename, |
3168 | visit, beg, end, replace); | |
03699b14 KR |
3169 | if (CONSP (val) && CONSP (XCDR (val))) |
3170 | inserted = XINT (XCAR (XCDR (val))); | |
32f4334d RS |
3171 | goto handled; |
3172 | } | |
3173 | ||
b1d1b865 RS |
3174 | orig_filename = filename; |
3175 | filename = ENCODE_FILE (filename); | |
3176 | ||
570d7624 JB |
3177 | fd = -1; |
3178 | ||
c1c4693e RS |
3179 | #ifdef WINDOWSNT |
3180 | { | |
3181 | Lisp_Object tem = Vw32_get_true_file_attributes; | |
3182 | ||
3183 | /* Tell stat to use expensive method to get accurate info. */ | |
3184 | Vw32_get_true_file_attributes = Qt; | |
d5db4077 | 3185 | total = stat (SDATA (filename), &st); |
c1c4693e RS |
3186 | Vw32_get_true_file_attributes = tem; |
3187 | } | |
3188 | if (total < 0) | |
3189 | #else | |
d5db4077 | 3190 | if (stat (SDATA (filename), &st) < 0) |
c1c4693e | 3191 | #endif /* WINDOWSNT */ |
570d7624 | 3192 | { |
68c45bf0 | 3193 | if (fd >= 0) emacs_close (fd); |
99bc28f4 | 3194 | badopen: |
265a9e55 | 3195 | if (NILP (visit)) |
b1d1b865 | 3196 | report_file_error ("Opening input file", Fcons (orig_filename, Qnil)); |
570d7624 JB |
3197 | st.st_mtime = -1; |
3198 | how_much = 0; | |
0de6b8f4 | 3199 | if (!NILP (Vcoding_system_for_read)) |
22d92d6b | 3200 | Fset (Qbuffer_file_coding_system, Vcoding_system_for_read); |
570d7624 JB |
3201 | goto notfound; |
3202 | } | |
3203 | ||
99bc28f4 | 3204 | #ifdef S_IFREG |
be53b411 JB |
3205 | /* This code will need to be changed in order to work on named |
3206 | pipes, and it's probably just not worth it. So we should at | |
3207 | least signal an error. */ | |
99bc28f4 | 3208 | if (!S_ISREG (st.st_mode)) |
330bfe57 | 3209 | { |
d4b8687b RS |
3210 | not_regular = 1; |
3211 | ||
3212 | if (! NILP (visit)) | |
3213 | goto notfound; | |
3214 | ||
3215 | if (! NILP (replace) || ! NILP (beg) || ! NILP (end)) | |
24b1ddad KS |
3216 | xsignal2 (Qfile_error, |
3217 | build_string ("not a regular file"), orig_filename); | |
330bfe57 | 3218 | } |
be53b411 JB |
3219 | #endif |
3220 | ||
99bc28f4 | 3221 | if (fd < 0) |
d5db4077 | 3222 | if ((fd = emacs_open (SDATA (filename), O_RDONLY, 0)) < 0) |
99bc28f4 KH |
3223 | goto badopen; |
3224 | ||
3225 | /* Replacement should preserve point as it preserves markers. */ | |
3226 | if (!NILP (replace)) | |
3227 | record_unwind_protect (restore_point_unwind, Fpoint_marker ()); | |
3228 | ||
3229 | record_unwind_protect (close_file_unwind, make_number (fd)); | |
3230 | ||
11d300db | 3231 | /* Can happen on any platform that uses long as type of off_t, but allows |
7c2fb837 | 3232 | file sizes to exceed 2Gb, so give a suitable message. */ |
d4b8687b | 3233 | if (! not_regular && st.st_size < 0) |
11d300db | 3234 | error ("Maximum buffer size exceeded"); |
be53b411 | 3235 | |
9c856db9 GM |
3236 | /* Prevent redisplay optimizations. */ |
3237 | current_buffer->clip_changed = 1; | |
3238 | ||
9f57b6b4 KH |
3239 | if (!NILP (visit)) |
3240 | { | |
3241 | if (!NILP (beg) || !NILP (end)) | |
3242 | error ("Attempt to visit less than an entire file"); | |
3243 | if (BEG < Z && NILP (replace)) | |
3244 | error ("Cannot do file visiting in a non-empty buffer"); | |
3245 | } | |
7fded690 JB |
3246 | |
3247 | if (!NILP (beg)) | |
b7826503 | 3248 | CHECK_NUMBER (beg); |
7fded690 | 3249 | else |
2acfd7ae | 3250 | XSETFASTINT (beg, 0); |
7fded690 JB |
3251 | |
3252 | if (!NILP (end)) | |
b7826503 | 3253 | CHECK_NUMBER (end); |
7fded690 JB |
3254 | else |
3255 | { | |
d4b8687b RS |
3256 | if (! not_regular) |
3257 | { | |
3258 | XSETINT (end, st.st_size); | |
68c45bf0 PE |
3259 | |
3260 | /* Arithmetic overflow can occur if an Emacs integer cannot | |
3261 | represent the file size, or if the calculations below | |
3262 | overflow. The calculations below double the file size | |
3263 | twice, so check that it can be multiplied by 4 safely. */ | |
3264 | if (XINT (end) != st.st_size | |
77a28bbf | 3265 | || st.st_size > INT_MAX / 4) |
d4b8687b | 3266 | error ("Maximum buffer size exceeded"); |
d21dd12d GM |
3267 | |
3268 | /* The file size returned from stat may be zero, but data | |
3269 | may be readable nonetheless, for example when this is a | |
3270 | file in the /proc filesystem. */ | |
3271 | if (st.st_size == 0) | |
3272 | XSETINT (end, READ_BUF_SIZE); | |
d4b8687b | 3273 | } |
7fded690 JB |
3274 | } |
3275 | ||
356a6224 | 3276 | if (EQ (Vcoding_system_for_read, Qauto_save_coding)) |
5560aecd | 3277 | { |
75421805 | 3278 | coding_system = coding_inherit_eol_type (Qutf_8_emacs, Qunix); |
5560aecd KH |
3279 | setup_coding_system (coding_system, &coding); |
3280 | /* Ensure we set Vlast_coding_system_used. */ | |
3281 | set_coding_system = 1; | |
3282 | } | |
356a6224 | 3283 | else if (BEG < Z) |
f736ffbf KH |
3284 | { |
3285 | /* Decide the coding system to use for reading the file now | |
3286 | because we can't use an optimized method for handling | |
3287 | `coding:' tag if the current buffer is not empty. */ | |
f736ffbf | 3288 | if (!NILP (Vcoding_system_for_read)) |
db327c7e | 3289 | coding_system = Vcoding_system_for_read; |
f736ffbf KH |
3290 | else |
3291 | { | |
3292 | /* Don't try looking inside a file for a coding system | |
3293 | specification if it is not seekable. */ | |
3294 | if (! not_regular && ! NILP (Vset_auto_coding_function)) | |
3295 | { | |
3296 | /* Find a coding system specified in the heading two | |
3297 | lines or in the tailing several lines of the file. | |
3298 | We assume that the 1K-byte and 3K-byte for heading | |
003a7eaa | 3299 | and tailing respectively are sufficient for this |
f736ffbf | 3300 | purpose. */ |
07590973 | 3301 | int nread; |
f736ffbf KH |
3302 | |
3303 | if (st.st_size <= (1024 * 4)) | |
68c45bf0 | 3304 | nread = emacs_read (fd, read_buf, 1024 * 4); |
f736ffbf KH |
3305 | else |
3306 | { | |
68c45bf0 | 3307 | nread = emacs_read (fd, read_buf, 1024); |
f736ffbf KH |
3308 | if (nread >= 0) |
3309 | { | |
3310 | if (lseek (fd, st.st_size - (1024 * 3), 0) < 0) | |
3311 | report_file_error ("Setting file position", | |
3312 | Fcons (orig_filename, Qnil)); | |
68c45bf0 | 3313 | nread += emacs_read (fd, read_buf + nread, 1024 * 3); |
f736ffbf KH |
3314 | } |
3315 | } | |
feb9dc27 | 3316 | |
f736ffbf KH |
3317 | if (nread < 0) |
3318 | error ("IO error reading %s: %s", | |
d5db4077 | 3319 | SDATA (orig_filename), emacs_strerror (errno)); |
f736ffbf KH |
3320 | else if (nread > 0) |
3321 | { | |
f736ffbf | 3322 | struct buffer *prev = current_buffer; |
685fc579 RS |
3323 | Lisp_Object buffer; |
3324 | struct buffer *buf; | |
f736ffbf KH |
3325 | |
3326 | record_unwind_protect (Fset_buffer, Fcurrent_buffer ()); | |
1d92afcd | 3327 | |
685fc579 RS |
3328 | buffer = Fget_buffer_create (build_string (" *code-converting-work*")); |
3329 | buf = XBUFFER (buffer); | |
3330 | ||
29ea8ae9 | 3331 | delete_all_overlays (buf); |
685fc579 RS |
3332 | buf->directory = current_buffer->directory; |
3333 | buf->read_only = Qnil; | |
3334 | buf->filename = Qnil; | |
3335 | buf->undo_list = Qt; | |
29ea8ae9 SM |
3336 | eassert (buf->overlays_before == NULL); |
3337 | eassert (buf->overlays_after == NULL); | |
efdc16c9 | 3338 | |
685fc579 RS |
3339 | set_buffer_internal (buf); |
3340 | Ferase_buffer (); | |
3341 | buf->enable_multibyte_characters = Qnil; | |
3342 | ||
f736ffbf KH |
3343 | insert_1_both (read_buf, nread, nread, 0, 0, 0); |
3344 | TEMP_SET_PT_BOTH (BEG, BEG_BYTE); | |
db327c7e | 3345 | coding_system = call2 (Vset_auto_coding_function, |
8f924df7 | 3346 | filename, make_number (nread)); |
f736ffbf | 3347 | set_buffer_internal (prev); |
efdc16c9 | 3348 | |
f736ffbf KH |
3349 | /* Discard the unwind protect for recovering the |
3350 | current buffer. */ | |
3351 | specpdl_ptr--; | |
3352 | ||
3353 | /* Rewind the file for the actual read done later. */ | |
3354 | if (lseek (fd, 0, 0) < 0) | |
3355 | report_file_error ("Setting file position", | |
3356 | Fcons (orig_filename, Qnil)); | |
3357 | } | |
3358 | } | |
feb9dc27 | 3359 | |
db327c7e | 3360 | if (NILP (coding_system)) |
f736ffbf KH |
3361 | { |
3362 | /* If we have not yet decided a coding system, check | |
3363 | file-coding-system-alist. */ | |
8f924df7 | 3364 | Lisp_Object args[6]; |
f736ffbf KH |
3365 | |
3366 | args[0] = Qinsert_file_contents, args[1] = orig_filename; | |
3367 | args[2] = visit, args[3] = beg, args[4] = end, args[5] = replace; | |
8f924df7 KH |
3368 | coding_system = Ffind_operation_coding_system (6, args); |
3369 | if (CONSP (coding_system)) | |
3370 | coding_system = XCAR (coding_system); | |
f736ffbf KH |
3371 | } |
3372 | } | |
c9e82392 | 3373 | |
db327c7e KH |
3374 | if (NILP (coding_system)) |
3375 | coding_system = Qundecided; | |
3376 | else | |
3377 | CHECK_CODING_SYSTEM (coding_system); | |
c8a6d68a | 3378 | |
db327c7e | 3379 | if (NILP (current_buffer->enable_multibyte_characters)) |
237a6fd2 RS |
3380 | /* We must suppress all character code conversion except for |
3381 | end-of-line conversion. */ | |
db327c7e | 3382 | coding_system = raw_text_coding_system (coding_system); |
54369368 | 3383 | |
db327c7e KH |
3384 | setup_coding_system (coding_system, &coding); |
3385 | /* Ensure we set Vlast_coding_system_used. */ | |
3386 | set_coding_system = 1; | |
f736ffbf | 3387 | } |
6cf71bf1 | 3388 | |
3d0387c0 RS |
3389 | /* If requested, replace the accessible part of the buffer |
3390 | with the file contents. Avoid replacing text at the | |
3391 | beginning or end of the buffer that matches the file contents; | |
3dbcf3f6 RS |
3392 | that preserves markers pointing to the unchanged parts. |
3393 | ||
3394 | Here we implement this feature in an optimized way | |
3395 | for the case where code conversion is NOT needed. | |
3396 | The following if-statement handles the case of conversion | |
727a0b4a RS |
3397 | in a less optimal way. |
3398 | ||
3399 | If the code conversion is "automatic" then we try using this | |
3400 | method and hope for the best. | |
3401 | But if we discover the need for conversion, we give up on this method | |
3402 | and let the following if-statement handle the replace job. */ | |
3dbcf3f6 | 3403 | if (!NILP (replace) |
f736ffbf | 3404 | && BEGV < ZV |
db327c7e KH |
3405 | && (NILP (coding_system) |
3406 | || ! CODING_REQUIRE_DECODING (&coding))) | |
3d0387c0 | 3407 | { |
ec7adf26 RS |
3408 | /* same_at_start and same_at_end count bytes, |
3409 | because file access counts bytes | |
3410 | and BEG and END count bytes. */ | |
3411 | int same_at_start = BEGV_BYTE; | |
3412 | int same_at_end = ZV_BYTE; | |
9c28748f | 3413 | int overlap; |
6fdaa9a0 KH |
3414 | /* There is still a possibility we will find the need to do code |
3415 | conversion. If that happens, we set this variable to 1 to | |
727a0b4a | 3416 | give up on handling REPLACE in the optimized way. */ |
6fdaa9a0 | 3417 | int giveup_match_end = 0; |
9c28748f | 3418 | |
4d2a0879 RS |
3419 | if (XINT (beg) != 0) |
3420 | { | |
3421 | if (lseek (fd, XINT (beg), 0) < 0) | |
3422 | report_file_error ("Setting file position", | |
b1d1b865 | 3423 | Fcons (orig_filename, Qnil)); |
4d2a0879 RS |
3424 | } |
3425 | ||
3d0387c0 RS |
3426 | immediate_quit = 1; |
3427 | QUIT; | |
3428 | /* Count how many chars at the start of the file | |
3429 | match the text at the beginning of the buffer. */ | |
3430 | while (1) | |
3431 | { | |
3432 | int nread, bufpos; | |
3433 | ||
68c45bf0 | 3434 | nread = emacs_read (fd, buffer, sizeof buffer); |
3d0387c0 RS |
3435 | if (nread < 0) |
3436 | error ("IO error reading %s: %s", | |
d5db4077 | 3437 | SDATA (orig_filename), emacs_strerror (errno)); |
3d0387c0 RS |
3438 | else if (nread == 0) |
3439 | break; | |
6fdaa9a0 | 3440 | |
db327c7e | 3441 | if (CODING_REQUIRE_DETECTION (&coding)) |
727a0b4a | 3442 | { |
5b359650 | 3443 | coding_system = detect_coding_system (buffer, nread, nread, 1, 0, |
db327c7e KH |
3444 | coding_system); |
3445 | setup_coding_system (coding_system, &coding); | |
727a0b4a RS |
3446 | } |
3447 | ||
db327c7e KH |
3448 | if (CODING_REQUIRE_DECODING (&coding)) |
3449 | /* We found that the file should be decoded somehow. | |
727a0b4a RS |
3450 | Let's give up here. */ |
3451 | { | |
3452 | giveup_match_end = 1; | |
3453 | break; | |
3454 | } | |
3455 | ||
3d0387c0 | 3456 | bufpos = 0; |
ec7adf26 | 3457 | while (bufpos < nread && same_at_start < ZV_BYTE |
6fdaa9a0 | 3458 | && FETCH_BYTE (same_at_start) == buffer[bufpos]) |
3d0387c0 RS |
3459 | same_at_start++, bufpos++; |
3460 | /* If we found a discrepancy, stop the scan. | |
8e6208c5 | 3461 | Otherwise loop around and scan the next bufferful. */ |
3d0387c0 RS |
3462 | if (bufpos != nread) |
3463 | break; | |
3464 | } | |
3465 | immediate_quit = 0; | |
3466 | /* If the file matches the buffer completely, | |
3467 | there's no need to replace anything. */ | |
ec7adf26 | 3468 | if (same_at_start - BEGV_BYTE == XINT (end)) |
3d0387c0 | 3469 | { |
68c45bf0 | 3470 | emacs_close (fd); |
a1d2b64a | 3471 | specpdl_ptr--; |
1051b3b3 | 3472 | /* Truncate the buffer to the size of the file. */ |
7dae4502 | 3473 | del_range_1 (same_at_start, same_at_end, 0, 0); |
3d0387c0 RS |
3474 | goto handled; |
3475 | } | |
3476 | immediate_quit = 1; | |
3477 | QUIT; | |
3478 | /* Count how many chars at the end of the file | |
6fdaa9a0 KH |
3479 | match the text at the end of the buffer. But, if we have |
3480 | already found that decoding is necessary, don't waste time. */ | |
3481 | while (!giveup_match_end) | |
3d0387c0 RS |
3482 | { |
3483 | int total_read, nread, bufpos, curpos, trial; | |
3484 | ||
3485 | /* At what file position are we now scanning? */ | |
ec7adf26 | 3486 | curpos = XINT (end) - (ZV_BYTE - same_at_end); |
fc81fa9e KH |
3487 | /* If the entire file matches the buffer tail, stop the scan. */ |
3488 | if (curpos == 0) | |
3489 | break; | |
3d0387c0 RS |
3490 | /* How much can we scan in the next step? */ |
3491 | trial = min (curpos, sizeof buffer); | |
3492 | if (lseek (fd, curpos - trial, 0) < 0) | |
3493 | report_file_error ("Setting file position", | |
b1d1b865 | 3494 | Fcons (orig_filename, Qnil)); |
3d0387c0 | 3495 | |
b02439c8 | 3496 | total_read = nread = 0; |
3d0387c0 RS |
3497 | while (total_read < trial) |
3498 | { | |
68c45bf0 | 3499 | nread = emacs_read (fd, buffer + total_read, trial - total_read); |
2bd2273e | 3500 | if (nread < 0) |
3d0387c0 | 3501 | error ("IO error reading %s: %s", |
d5db4077 | 3502 | SDATA (orig_filename), emacs_strerror (errno)); |
2bd2273e GM |
3503 | else if (nread == 0) |
3504 | break; | |
3d0387c0 RS |
3505 | total_read += nread; |
3506 | } | |
efdc16c9 | 3507 | |
8e6208c5 | 3508 | /* Scan this bufferful from the end, comparing with |
3d0387c0 RS |
3509 | the Emacs buffer. */ |
3510 | bufpos = total_read; | |
efdc16c9 | 3511 | |
3d0387c0 RS |
3512 | /* Compare with same_at_start to avoid counting some buffer text |
3513 | as matching both at the file's beginning and at the end. */ | |
3514 | while (bufpos > 0 && same_at_end > same_at_start | |
6fdaa9a0 | 3515 | && FETCH_BYTE (same_at_end - 1) == buffer[bufpos - 1]) |
3d0387c0 | 3516 | same_at_end--, bufpos--; |
727a0b4a | 3517 | |
3d0387c0 | 3518 | /* If we found a discrepancy, stop the scan. |
8e6208c5 | 3519 | Otherwise loop around and scan the preceding bufferful. */ |
3d0387c0 | 3520 | if (bufpos != 0) |
727a0b4a RS |
3521 | { |
3522 | /* If this discrepancy is because of code conversion, | |
3523 | we cannot use this method; giveup and try the other. */ | |
3524 | if (same_at_end > same_at_start | |
3525 | && FETCH_BYTE (same_at_end - 1) >= 0200 | |
71312b68 | 3526 | && ! NILP (current_buffer->enable_multibyte_characters) |
c8a6d68a | 3527 | && (CODING_MAY_REQUIRE_DECODING (&coding))) |
727a0b4a RS |
3528 | giveup_match_end = 1; |
3529 | break; | |
3530 | } | |
b02439c8 GM |
3531 | |
3532 | if (nread == 0) | |
3533 | break; | |
3d0387c0 RS |
3534 | } |
3535 | immediate_quit = 0; | |
9c28748f | 3536 | |
727a0b4a RS |
3537 | if (! giveup_match_end) |
3538 | { | |
ec7adf26 RS |
3539 | int temp; |
3540 | ||
727a0b4a | 3541 | /* We win! We can handle REPLACE the optimized way. */ |
9c28748f | 3542 | |
20f6783d RS |
3543 | /* Extend the start of non-matching text area to multibyte |
3544 | character boundary. */ | |
3545 | if (! NILP (current_buffer->enable_multibyte_characters)) | |
3546 | while (same_at_start > BEGV_BYTE | |
3547 | && ! CHAR_HEAD_P (FETCH_BYTE (same_at_start))) | |
3548 | same_at_start--; | |
3549 | ||
3550 | /* Extend the end of non-matching text area to multibyte | |
71312b68 RS |
3551 | character boundary. */ |
3552 | if (! NILP (current_buffer->enable_multibyte_characters)) | |
ec7adf26 RS |
3553 | while (same_at_end < ZV_BYTE |
3554 | && ! CHAR_HEAD_P (FETCH_BYTE (same_at_end))) | |
71312b68 RS |
3555 | same_at_end++; |
3556 | ||
727a0b4a | 3557 | /* Don't try to reuse the same piece of text twice. */ |
ec7adf26 RS |
3558 | overlap = (same_at_start - BEGV_BYTE |
3559 | - (same_at_end + st.st_size - ZV)); | |
727a0b4a RS |
3560 | if (overlap > 0) |
3561 | same_at_end += overlap; | |
9c28748f | 3562 | |
727a0b4a | 3563 | /* Arrange to read only the nonmatching middle part of the file. */ |
ec7adf26 RS |
3564 | XSETFASTINT (beg, XINT (beg) + (same_at_start - BEGV_BYTE)); |
3565 | XSETFASTINT (end, XINT (end) - (ZV_BYTE - same_at_end)); | |
3dbcf3f6 | 3566 | |
ec7adf26 | 3567 | del_range_byte (same_at_start, same_at_end, 0); |
727a0b4a | 3568 | /* Insert from the file at the proper position. */ |
ec7adf26 RS |
3569 | temp = BYTE_TO_CHAR (same_at_start); |
3570 | SET_PT_BOTH (temp, same_at_start); | |
727a0b4a RS |
3571 | |
3572 | /* If display currently starts at beginning of line, | |
3573 | keep it that way. */ | |
3574 | if (XBUFFER (XWINDOW (selected_window)->buffer) == current_buffer) | |
3575 | XWINDOW (selected_window)->start_at_line_beg = Fbolp (); | |
3576 | ||
3577 | replace_handled = 1; | |
3578 | } | |
3dbcf3f6 RS |
3579 | } |
3580 | ||
3581 | /* If requested, replace the accessible part of the buffer | |
3582 | with the file contents. Avoid replacing text at the | |
3583 | beginning or end of the buffer that matches the file contents; | |
3584 | that preserves markers pointing to the unchanged parts. | |
3585 | ||
3586 | Here we implement this feature for the case where code conversion | |
3587 | is needed, in a simple way that needs a lot of memory. | |
3588 | The preceding if-statement handles the case of no conversion | |
3589 | in a more optimized way. */ | |
f736ffbf | 3590 | if (!NILP (replace) && ! replace_handled && BEGV < ZV) |
3dbcf3f6 | 3591 | { |
13818c30 SM |
3592 | EMACS_INT same_at_start = BEGV_BYTE; |
3593 | EMACS_INT same_at_end = ZV_BYTE; | |
3594 | EMACS_INT same_at_start_charpos; | |
3595 | EMACS_INT inserted_chars; | |
3596 | EMACS_INT overlap; | |
3597 | EMACS_INT bufpos; | |
db327c7e | 3598 | unsigned char *decoded; |
ec7adf26 | 3599 | int temp; |
8f924df7 | 3600 | int this_count = SPECPDL_INDEX (); |
59c94f03 | 3601 | int multibyte = ! NILP (current_buffer->enable_multibyte_characters); |
5b359650 | 3602 | Lisp_Object conversion_buffer; |
db327c7e | 3603 | |
5b359650 | 3604 | conversion_buffer = code_conversion_save (1, multibyte); |
3dbcf3f6 RS |
3605 | |
3606 | /* First read the whole file, performing code conversion into | |
3607 | CONVERSION_BUFFER. */ | |
3608 | ||
727a0b4a | 3609 | if (lseek (fd, XINT (beg), 0) < 0) |
8f924df7 KH |
3610 | report_file_error ("Setting file position", |
3611 | Fcons (orig_filename, Qnil)); | |
727a0b4a | 3612 | |
3dbcf3f6 RS |
3613 | total = st.st_size; /* Total bytes in the file. */ |
3614 | how_much = 0; /* Bytes read from file so far. */ | |
3615 | inserted = 0; /* Bytes put into CONVERSION_BUFFER so far. */ | |
3616 | unprocessed = 0; /* Bytes not processed in previous loop. */ | |
3617 | ||
2ba48777 | 3618 | GCPRO1 (conversion_buffer); |
3dbcf3f6 RS |
3619 | while (how_much < total) |
3620 | { | |
db327c7e KH |
3621 | /* We read one bunch by one (READ_BUF_SIZE bytes) to allow |
3622 | quitting while reading a huge while. */ | |
3dbcf3f6 RS |
3623 | /* try is reserved in some compilers (Microsoft C) */ |
3624 | int trytry = min (total - how_much, READ_BUF_SIZE - unprocessed); | |
3dbcf3f6 RS |
3625 | int this; |
3626 | ||
3627 | /* Allow quitting out of the actual I/O. */ | |
3628 | immediate_quit = 1; | |
3629 | QUIT; | |
db327c7e | 3630 | this = emacs_read (fd, read_buf + unprocessed, trytry); |
3dbcf3f6 RS |
3631 | immediate_quit = 0; |
3632 | ||
db327c7e | 3633 | if (this <= 0) |
3dbcf3f6 | 3634 | { |
db327c7e KH |
3635 | if (this < 0) |
3636 | how_much = this; | |
3dbcf3f6 RS |
3637 | break; |
3638 | } | |
3639 | ||
3640 | how_much += this; | |
3641 | ||
bf1c0f27 SM |
3642 | BUF_TEMP_SET_PT (XBUFFER (conversion_buffer), |
3643 | BUF_Z (XBUFFER (conversion_buffer))); | |
db327c7e KH |
3644 | decode_coding_c_string (&coding, read_buf, unprocessed + this, |
3645 | conversion_buffer); | |
3646 | unprocessed = coding.carryover_bytes; | |
3647 | if (coding.carryover_bytes > 0) | |
3648 | bcopy (coding.carryover, read_buf, unprocessed); | |
3dbcf3f6 | 3649 | } |
2ba48777 | 3650 | UNGCPRO; |
db327c7e | 3651 | emacs_close (fd); |
3dbcf3f6 | 3652 | |
db327c7e KH |
3653 | /* At this point, HOW_MUCH should equal TOTAL, or should be <= 0 |
3654 | if we couldn't read the file. */ | |
3dbcf3f6 RS |
3655 | |
3656 | if (how_much < 0) | |
4ed925c6 MB |
3657 | error ("IO error reading %s: %s", |
3658 | SDATA (orig_filename), emacs_strerror (errno)); | |
3dbcf3f6 | 3659 | |
db327c7e KH |
3660 | if (unprocessed > 0) |
3661 | { | |
3662 | coding.mode |= CODING_MODE_LAST_BLOCK; | |
3663 | decode_coding_c_string (&coding, read_buf, unprocessed, | |
3664 | conversion_buffer); | |
3665 | coding.mode &= ~CODING_MODE_LAST_BLOCK; | |
3666 | } | |
3667 | ||
3668 | decoded = BUF_BEG_ADDR (XBUFFER (conversion_buffer)); | |
50342b35 KH |
3669 | inserted = (BUF_Z_BYTE (XBUFFER (conversion_buffer)) |
3670 | - BUF_BEG_BYTE (XBUFFER (conversion_buffer))); | |
db327c7e KH |
3671 | |
3672 | /* Compare the beginning of the converted string with the buffer | |
3673 | text. */ | |
3dbcf3f6 RS |
3674 | |
3675 | bufpos = 0; | |
3676 | while (bufpos < inserted && same_at_start < same_at_end | |
db327c7e | 3677 | && FETCH_BYTE (same_at_start) == decoded[bufpos]) |
3dbcf3f6 RS |
3678 | same_at_start++, bufpos++; |
3679 | ||
db327c7e | 3680 | /* If the file matches the head of buffer completely, |
3dbcf3f6 RS |
3681 | there's no need to replace anything. */ |
3682 | ||
3683 | if (bufpos == inserted) | |
3684 | { | |
3dbcf3f6 RS |
3685 | specpdl_ptr--; |
3686 | /* Truncate the buffer to the size of the file. */ | |
18a9f8d9 SM |
3687 | if (same_at_start == same_at_end) |
3688 | nochange = 1; | |
3689 | else | |
3690 | del_range_byte (same_at_start, same_at_end, 0); | |
427f5aab | 3691 | inserted = 0; |
e8553dd1 KH |
3692 | |
3693 | unbind_to (this_count, Qnil); | |
3dbcf3f6 RS |
3694 | goto handled; |
3695 | } | |
3696 | ||
db327c7e KH |
3697 | /* Extend the start of non-matching text area to the previous |
3698 | multibyte character boundary. */ | |
20f6783d RS |
3699 | if (! NILP (current_buffer->enable_multibyte_characters)) |
3700 | while (same_at_start > BEGV_BYTE | |
3701 | && ! CHAR_HEAD_P (FETCH_BYTE (same_at_start))) | |
3702 | same_at_start--; | |
3703 | ||
3dbcf3f6 RS |
3704 | /* Scan this bufferful from the end, comparing with |
3705 | the Emacs buffer. */ | |
3706 | bufpos = inserted; | |
3707 | ||
3708 | /* Compare with same_at_start to avoid counting some buffer text | |
3709 | as matching both at the file's beginning and at the end. */ | |
3710 | while (bufpos > 0 && same_at_end > same_at_start | |
db327c7e | 3711 | && FETCH_BYTE (same_at_end - 1) == decoded[bufpos - 1]) |
3dbcf3f6 RS |
3712 | same_at_end--, bufpos--; |
3713 | ||
db327c7e KH |
3714 | /* Extend the end of non-matching text area to the next |
3715 | multibyte character boundary. */ | |
20f6783d RS |
3716 | if (! NILP (current_buffer->enable_multibyte_characters)) |
3717 | while (same_at_end < ZV_BYTE | |
3718 | && ! CHAR_HEAD_P (FETCH_BYTE (same_at_end))) | |
3719 | same_at_end++; | |
3720 | ||
3dbcf3f6 | 3721 | /* Don't try to reuse the same piece of text twice. */ |
ec7adf26 | 3722 | overlap = same_at_start - BEGV_BYTE - (same_at_end + inserted - ZV_BYTE); |
3dbcf3f6 RS |
3723 | if (overlap > 0) |
3724 | same_at_end += overlap; | |
3725 | ||
727a0b4a RS |
3726 | /* If display currently starts at beginning of line, |
3727 | keep it that way. */ | |
3728 | if (XBUFFER (XWINDOW (selected_window)->buffer) == current_buffer) | |
3729 | XWINDOW (selected_window)->start_at_line_beg = Fbolp (); | |
3730 | ||
3dbcf3f6 RS |
3731 | /* Replace the chars that we need to replace, |
3732 | and update INSERTED to equal the number of bytes | |
db327c7e | 3733 | we are taking from the decoded string. */ |
4b70e2c9 | 3734 | inserted -= (ZV_BYTE - same_at_end) + (same_at_start - BEGV_BYTE); |
427f5aab | 3735 | |
643c73b9 | 3736 | if (same_at_end != same_at_start) |
427f5aab KH |
3737 | { |
3738 | del_range_byte (same_at_start, same_at_end, 0); | |
3739 | temp = GPT; | |
3740 | same_at_start = GPT_BYTE; | |
3741 | } | |
643c73b9 RS |
3742 | else |
3743 | { | |
643c73b9 | 3744 | temp = BYTE_TO_CHAR (same_at_start); |
643c73b9 | 3745 | } |
427f5aab KH |
3746 | /* Insert from the file at the proper position. */ |
3747 | SET_PT_BOTH (temp, same_at_start); | |
50342b35 KH |
3748 | same_at_start_charpos |
3749 | = buf_bytepos_to_charpos (XBUFFER (conversion_buffer), | |
7f5d2c72 SM |
3750 | same_at_start - BEGV_BYTE |
3751 | + BUF_BEG_BYTE (XBUFFER (conversion_buffer))); | |
50342b35 KH |
3752 | inserted_chars |
3753 | = (buf_bytepos_to_charpos (XBUFFER (conversion_buffer), | |
7f5d2c72 SM |
3754 | same_at_start + inserted - BEGV_BYTE |
3755 | + BUF_BEG_BYTE (XBUFFER (conversion_buffer))) | |
50342b35 | 3756 | - same_at_start_charpos); |
d07af40d KH |
3757 | /* This binding is to avoid ask-user-about-supersession-threat |
3758 | being called in insert_from_buffer (via in | |
3759 | prepare_to_modify_buffer). */ | |
3760 | specbind (intern ("buffer-file-name"), Qnil); | |
db327c7e | 3761 | insert_from_buffer (XBUFFER (conversion_buffer), |
50342b35 | 3762 | same_at_start_charpos, inserted_chars, 0); |
427f5aab KH |
3763 | /* Set `inserted' to the number of inserted characters. */ |
3764 | inserted = PT - temp; | |
77343e1d KH |
3765 | /* Set point before the inserted characters. */ |
3766 | SET_PT_BOTH (temp, same_at_start); | |
3dbcf3f6 | 3767 | |
db327c7e | 3768 | unbind_to (this_count, Qnil); |
3dbcf3f6 | 3769 | |
3dbcf3f6 | 3770 | goto handled; |
3d0387c0 RS |
3771 | } |
3772 | ||
d4b8687b RS |
3773 | if (! not_regular) |
3774 | { | |
3775 | register Lisp_Object temp; | |
7fded690 | 3776 | |
d4b8687b | 3777 | total = XINT (end) - XINT (beg); |
570d7624 | 3778 | |
d4b8687b RS |
3779 | /* Make sure point-max won't overflow after this insertion. */ |
3780 | XSETINT (temp, total); | |
3781 | if (total != XINT (temp)) | |
3782 | error ("Maximum buffer size exceeded"); | |
3783 | } | |
3784 | else | |
3785 | /* For a special file, all we can do is guess. */ | |
3786 | total = READ_BUF_SIZE; | |
570d7624 | 3787 | |
68780e2a RS |
3788 | if (NILP (visit) && inserted > 0) |
3789 | { | |
3790 | #ifdef CLASH_DETECTION | |
3791 | if (!NILP (current_buffer->file_truename) | |
3792 | /* Make binding buffer-file-name to nil effective. */ | |
3793 | && !NILP (current_buffer->filename) | |
3794 | && SAVE_MODIFF >= MODIFF) | |
3795 | we_locked_file = 1; | |
3796 | #endif /* CLASH_DETECTION */ | |
3797 | prepare_to_modify_buffer (GPT, GPT, NULL); | |
3798 | } | |
570d7624 | 3799 | |
7fe52289 | 3800 | move_gap (PT); |
7fded690 JB |
3801 | if (GAP_SIZE < total) |
3802 | make_gap (total - GAP_SIZE); | |
3803 | ||
a1d2b64a | 3804 | if (XINT (beg) != 0 || !NILP (replace)) |
7fded690 JB |
3805 | { |
3806 | if (lseek (fd, XINT (beg), 0) < 0) | |
b1d1b865 RS |
3807 | report_file_error ("Setting file position", |
3808 | Fcons (orig_filename, Qnil)); | |
7fded690 JB |
3809 | } |
3810 | ||
6fdaa9a0 | 3811 | /* In the following loop, HOW_MUCH contains the total bytes read so |
c8a6d68a KH |
3812 | far for a regular file, and not changed for a special file. But, |
3813 | before exiting the loop, it is set to a negative value if I/O | |
3814 | error occurs. */ | |
a1d2b64a | 3815 | how_much = 0; |
efdc16c9 | 3816 | |
6fdaa9a0 KH |
3817 | /* Total bytes inserted. */ |
3818 | inserted = 0; | |
efdc16c9 | 3819 | |
c8a6d68a | 3820 | /* Here, we don't do code conversion in the loop. It is done by |
db327c7e | 3821 | decode_coding_gap after all data are read into the buffer. */ |
1b978129 GM |
3822 | { |
3823 | int gap_size = GAP_SIZE; | |
efdc16c9 | 3824 | |
1b978129 GM |
3825 | while (how_much < total) |
3826 | { | |
5e570b75 | 3827 | /* try is reserved in some compilers (Microsoft C) */ |
1b978129 GM |
3828 | int trytry = min (total - how_much, READ_BUF_SIZE); |
3829 | int this; | |
570d7624 | 3830 | |
1b978129 GM |
3831 | if (not_regular) |
3832 | { | |
3833 | Lisp_Object val; | |
570d7624 | 3834 | |
1b978129 GM |
3835 | /* Maybe make more room. */ |
3836 | if (gap_size < trytry) | |
3837 | { | |
3838 | make_gap (total - gap_size); | |
3839 | gap_size = GAP_SIZE; | |
3840 | } | |
3841 | ||
3842 | /* Read from the file, capturing `quit'. When an | |
3843 | error occurs, end the loop, and arrange for a quit | |
3844 | to be signaled after decoding the text we read. */ | |
3845 | non_regular_fd = fd; | |
3846 | non_regular_inserted = inserted; | |
3847 | non_regular_nbytes = trytry; | |
3848 | val = internal_condition_case_1 (read_non_regular, Qnil, Qerror, | |
3849 | read_non_regular_quit); | |
3850 | if (NILP (val)) | |
3851 | { | |
3852 | read_quit = 1; | |
3853 | break; | |
3854 | } | |
3855 | ||
3856 | this = XINT (val); | |
3857 | } | |
3858 | else | |
3859 | { | |
3860 | /* Allow quitting out of the actual I/O. We don't make text | |
3861 | part of the buffer until all the reading is done, so a C-g | |
3862 | here doesn't do any harm. */ | |
3863 | immediate_quit = 1; | |
3864 | QUIT; | |
28c3eb5a | 3865 | this = emacs_read (fd, BEG_ADDR + PT_BYTE - BEG_BYTE + inserted, trytry); |
1b978129 GM |
3866 | immediate_quit = 0; |
3867 | } | |
efdc16c9 | 3868 | |
1b978129 GM |
3869 | if (this <= 0) |
3870 | { | |
3871 | how_much = this; | |
3872 | break; | |
3873 | } | |
3874 | ||
3875 | gap_size -= this; | |
3876 | ||
3877 | /* For a regular file, where TOTAL is the real size, | |
3878 | count HOW_MUCH to compare with it. | |
3879 | For a special file, where TOTAL is just a buffer size, | |
3880 | so don't bother counting in HOW_MUCH. | |
3881 | (INSERTED is where we count the number of characters inserted.) */ | |
3882 | if (! not_regular) | |
3883 | how_much += this; | |
3884 | inserted += this; | |
3885 | } | |
3886 | } | |
3887 | ||
68780e2a RS |
3888 | /* Now we have read all the file data into the gap. |
3889 | If it was empty, undo marking the buffer modified. */ | |
3890 | ||
3891 | if (inserted == 0) | |
3892 | { | |
6840d350 | 3893 | #ifdef CLASH_DETECTION |
68780e2a RS |
3894 | if (we_locked_file) |
3895 | unlock_file (current_buffer->file_truename); | |
6840d350 | 3896 | #endif |
68780e2a RS |
3897 | Vdeactivate_mark = old_Vdeactivate_mark; |
3898 | } | |
83c1cf6d RS |
3899 | else |
3900 | Vdeactivate_mark = Qt; | |
68780e2a | 3901 | |
1b978129 GM |
3902 | /* Make the text read part of the buffer. */ |
3903 | GAP_SIZE -= inserted; | |
3904 | GPT += inserted; | |
3905 | GPT_BYTE += inserted; | |
3906 | ZV += inserted; | |
3907 | ZV_BYTE += inserted; | |
3908 | Z += inserted; | |
3909 | Z_BYTE += inserted; | |
6fdaa9a0 | 3910 | |
c8a6d68a KH |
3911 | if (GAP_SIZE > 0) |
3912 | /* Put an anchor to ensure multi-byte form ends at gap. */ | |
3913 | *GPT_ADDR = 0; | |
d4b8687b | 3914 | |
68c45bf0 | 3915 | emacs_close (fd); |
6fdaa9a0 | 3916 | |
c8a6d68a KH |
3917 | /* Discard the unwind protect for closing the file. */ |
3918 | specpdl_ptr--; | |
6fdaa9a0 | 3919 | |
c8a6d68a KH |
3920 | if (how_much < 0) |
3921 | error ("IO error reading %s: %s", | |
d5db4077 | 3922 | SDATA (orig_filename), emacs_strerror (errno)); |
ec7adf26 | 3923 | |
f8569325 DL |
3924 | notfound: |
3925 | ||
db327c7e | 3926 | if (NILP (coding_system)) |
c8a6d68a | 3927 | { |
2df42e09 | 3928 | /* The coding system is not yet decided. Decide it by an |
dfe35e7b RS |
3929 | optimized method for handling `coding:' tag. |
3930 | ||
3931 | Note that we can get here only if the buffer was empty | |
3932 | before the insertion. */ | |
f736ffbf | 3933 | |
2df42e09 | 3934 | if (!NILP (Vcoding_system_for_read)) |
db327c7e | 3935 | coding_system = Vcoding_system_for_read; |
2df42e09 KH |
3936 | else |
3937 | { | |
98a7d268 KH |
3938 | /* Since we are sure that the current buffer was empty |
3939 | before the insertion, we can toggle | |
3940 | enable-multibyte-characters directly here without taking | |
9a7f80aa KH |
3941 | care of marker adjustment. By this way, we can run Lisp |
3942 | program safely before decoding the inserted text. */ | |
98a7d268 | 3943 | Lisp_Object unwind_data; |
9a7f80aa | 3944 | int count = SPECPDL_INDEX (); |
2df42e09 | 3945 | |
98a7d268 KH |
3946 | unwind_data = Fcons (current_buffer->enable_multibyte_characters, |
3947 | Fcons (current_buffer->undo_list, | |
3948 | Fcurrent_buffer ())); | |
2b89769e | 3949 | current_buffer->enable_multibyte_characters = Qnil; |
98a7d268 KH |
3950 | current_buffer->undo_list = Qt; |
3951 | record_unwind_protect (decide_coding_unwind, unwind_data); | |
3952 | ||
3953 | if (inserted > 0 && ! NILP (Vset_auto_coding_function)) | |
3954 | { | |
db327c7e | 3955 | coding_system = call2 (Vset_auto_coding_function, |
8f924df7 | 3956 | filename, make_number (inserted)); |
2df42e09 | 3957 | } |
f736ffbf | 3958 | |
db327c7e | 3959 | if (NILP (coding_system)) |
2df42e09 KH |
3960 | { |
3961 | /* If the coding system is not yet decided, check | |
3962 | file-coding-system-alist. */ | |
8f924df7 | 3963 | Lisp_Object args[6]; |
f736ffbf | 3964 | |
2df42e09 KH |
3965 | args[0] = Qinsert_file_contents, args[1] = orig_filename; |
3966 | args[2] = visit, args[3] = beg, args[4] = end, args[5] = Qnil; | |
8f924df7 KH |
3967 | coding_system = Ffind_operation_coding_system (6, args); |
3968 | if (CONSP (coding_system)) | |
3969 | coding_system = XCAR (coding_system); | |
f736ffbf | 3970 | } |
98a7d268 KH |
3971 | unbind_to (count, Qnil); |
3972 | inserted = Z_BYTE - BEG_BYTE; | |
2df42e09 | 3973 | } |
f736ffbf | 3974 | |
db327c7e KH |
3975 | if (NILP (coding_system)) |
3976 | coding_system = Qundecided; | |
3977 | else | |
3978 | CHECK_CODING_SYSTEM (coding_system); | |
f736ffbf | 3979 | |
db327c7e | 3980 | if (NILP (current_buffer->enable_multibyte_characters)) |
237a6fd2 | 3981 | /* We must suppress all character code conversion except for |
2df42e09 | 3982 | end-of-line conversion. */ |
db327c7e | 3983 | coding_system = raw_text_coding_system (coding_system); |
db327c7e KH |
3984 | setup_coding_system (coding_system, &coding); |
3985 | /* Ensure we set Vlast_coding_system_used. */ | |
3986 | set_coding_system = 1; | |
2df42e09 | 3987 | } |
f736ffbf | 3988 | |
db327c7e | 3989 | if (!NILP (visit)) |
8c3b9441 | 3990 | { |
db327c7e | 3991 | /* When we visit a file by raw-text, we change the buffer to |
9a7f80aa | 3992 | unibyte. */ |
db327c7e KH |
3993 | if (CODING_FOR_UNIBYTE (&coding) |
3994 | /* Can't do this if part of the buffer might be preserved. */ | |
3995 | && NILP (replace)) | |
3996 | /* Visiting a file with these coding system makes the buffer | |
3997 | unibyte. */ | |
3998 | current_buffer->enable_multibyte_characters = Qnil; | |
8c3b9441 KH |
3999 | } |
4000 | ||
8f924df7 | 4001 | coding.dst_multibyte = ! NILP (current_buffer->enable_multibyte_characters); |
5b359650 | 4002 | if (CODING_MAY_REQUIRE_DECODING (&coding) |
1c157f8d | 4003 | && (inserted > 0 || CODING_REQUIRE_FLUSHING (&coding))) |
2df42e09 | 4004 | { |
db327c7e KH |
4005 | move_gap_both (PT, PT_BYTE); |
4006 | GAP_SIZE += inserted; | |
4007 | ZV_BYTE -= inserted; | |
4008 | Z_BYTE -= inserted; | |
4009 | ZV -= inserted; | |
4010 | Z -= inserted; | |
4011 | decode_coding_gap (&coding, inserted, inserted); | |
4012 | inserted = coding.produced_char; | |
5b359650 | 4013 | coding_system = CODING_ID_NAME (coding.id); |
2df42e09 | 4014 | } |
db327c7e KH |
4015 | else if (inserted > 0) |
4016 | adjust_after_insert (PT, PT_BYTE, PT + inserted, PT_BYTE + inserted, | |
4017 | inserted); | |
570d7624 | 4018 | |
cf6d2357 RS |
4019 | /* Now INSERTED is measured in characters. */ |
4020 | ||
04e6f79c | 4021 | #ifdef DOS_NT |
2df42e09 KH |
4022 | /* Use the conversion type to determine buffer-file-type |
4023 | (find-buffer-file-type is now used to help determine the | |
4024 | conversion). */ | |
652a7e95 | 4025 | if ((VECTORP (CODING_ID_EOL_TYPE (coding.id)) |
f7ce9c0c | 4026 | || EQ (CODING_ID_EOL_TYPE (coding.id), Qunix)) |
2df42e09 KH |
4027 | && ! CODING_REQUIRE_DECODING (&coding)) |
4028 | current_buffer->buffer_file_type = Qt; | |
4029 | else | |
4030 | current_buffer->buffer_file_type = Qnil; | |
04e6f79c | 4031 | #endif |
570d7624 | 4032 | |
32f4334d | 4033 | handled: |
570d7624 | 4034 | |
265a9e55 | 4035 | if (!NILP (visit)) |
570d7624 | 4036 | { |
18a9f8d9 | 4037 | if (!EQ (current_buffer->undo_list, Qt) && !nochange) |
cfadd376 | 4038 | current_buffer->undo_list = Qnil; |
62bcf009 | 4039 | |
a7e82472 RS |
4040 | if (NILP (handler)) |
4041 | { | |
4042 | current_buffer->modtime = st.st_mtime; | |
b1d1b865 | 4043 | current_buffer->filename = orig_filename; |
a7e82472 | 4044 | } |
62bcf009 | 4045 | |
95385625 | 4046 | SAVE_MODIFF = MODIFF; |
570d7624 | 4047 | current_buffer->auto_save_modified = MODIFF; |
2acfd7ae | 4048 | XSETFASTINT (current_buffer->save_length, Z - BEG); |
570d7624 | 4049 | #ifdef CLASH_DETECTION |
32f4334d RS |
4050 | if (NILP (handler)) |
4051 | { | |
f471f4c2 RS |
4052 | if (!NILP (current_buffer->file_truename)) |
4053 | unlock_file (current_buffer->file_truename); | |
32f4334d RS |
4054 | unlock_file (filename); |
4055 | } | |
570d7624 | 4056 | #endif /* CLASH_DETECTION */ |
330bfe57 | 4057 | if (not_regular) |
24b1ddad KS |
4058 | xsignal2 (Qfile_error, |
4059 | build_string ("not a regular file"), orig_filename); | |
570d7624 JB |
4060 | } |
4061 | ||
b6426b03 | 4062 | if (set_coding_system) |
8f924df7 | 4063 | Vlast_coding_system_used = coding_system; |
b6426b03 | 4064 | |
2080470e | 4065 | if (! NILP (Ffboundp (Qafter_insert_file_set_coding))) |
b6426b03 | 4066 | { |
37a3c774 KH |
4067 | insval = call2 (Qafter_insert_file_set_coding, make_number (inserted), |
4068 | visit); | |
b6426b03 KH |
4069 | if (! NILP (insval)) |
4070 | { | |
4071 | CHECK_NUMBER (insval); | |
4072 | inserted = XFASTINT (insval); | |
4073 | } | |
4074 | } | |
4075 | ||
6420e80c | 4076 | /* Decode file format. */ |
c8a6d68a | 4077 | if (inserted > 0) |
0d420e88 | 4078 | { |
6420e80c | 4079 | /* Don't run point motion or modification hooks when decoding. */ |
6f2528d8 | 4080 | int count = SPECPDL_INDEX (); |
6420e80c | 4081 | int old_inserted = inserted; |
6f2528d8 MR |
4082 | specbind (Qinhibit_point_motion_hooks, Qt); |
4083 | specbind (Qinhibit_modification_hooks, Qt); | |
4084 | ||
6420e80c | 4085 | /* Save old undo list and don't record undo for decoding. */ |
6f2528d8 MR |
4086 | old_undo = current_buffer->undo_list; |
4087 | current_buffer->undo_list = Qt; | |
efdc16c9 | 4088 | |
6f2528d8 | 4089 | if (NILP (replace)) |
ed8e506f | 4090 | { |
6f2528d8 MR |
4091 | insval = call3 (Qformat_decode, |
4092 | Qnil, make_number (inserted), visit); | |
4093 | CHECK_NUMBER (insval); | |
4094 | inserted = XFASTINT (insval); | |
4095 | } | |
4096 | else | |
4097 | { | |
4098 | /* If REPLACE is non-nil and we succeeded in not replacing the | |
6420e80c AS |
4099 | beginning or end of the buffer text with the file's contents, |
4100 | call format-decode with `point' positioned at the beginning | |
4101 | of the buffer and `inserted' equalling the number of | |
4102 | characters in the buffer. Otherwise, format-decode might | |
4103 | fail to correctly analyze the beginning or end of the buffer. | |
4104 | Hence we temporarily save `point' and `inserted' here and | |
4105 | restore `point' iff format-decode did not insert or delete | |
4106 | any text. Otherwise we leave `point' at point-min. */ | |
6f2528d8 MR |
4107 | int opoint = PT; |
4108 | int opoint_byte = PT_BYTE; | |
4109 | int oinserted = ZV - BEGV; | |
cac4219c | 4110 | int ochars_modiff = CHARS_MODIFF; |
1f163f28 MA |
4111 | |
4112 | TEMP_SET_PT_BOTH (BEGV, BEGV_BYTE); | |
6f2528d8 MR |
4113 | insval = call3 (Qformat_decode, |
4114 | Qnil, make_number (oinserted), visit); | |
4115 | CHECK_NUMBER (insval); | |
cac4219c MR |
4116 | if (ochars_modiff == CHARS_MODIFF) |
4117 | /* format_decode didn't modify buffer's characters => move | |
4118 | point back to position before inserted text and leave | |
6420e80c | 4119 | value of inserted alone. */ |
6f2528d8 | 4120 | SET_PT_BOTH (opoint, opoint_byte); |
cac4219c MR |
4121 | else |
4122 | /* format_decode modified buffer's characters => consider | |
6420e80c | 4123 | entire buffer changed and leave point at point-min. */ |
cac4219c | 4124 | inserted = XFASTINT (insval); |
ed8e506f | 4125 | } |
efdc16c9 | 4126 | |
6f2528d8 | 4127 | /* For consistency with format-decode call these now iff inserted > 0 |
6420e80c | 4128 | (martin 2007-06-28). */ |
6f2528d8 MR |
4129 | p = Vafter_insert_file_functions; |
4130 | while (CONSP (p)) | |
4131 | { | |
4132 | if (NILP (replace)) | |
4133 | { | |
4134 | insval = call1 (XCAR (p), make_number (inserted)); | |
4135 | if (!NILP (insval)) | |
4136 | { | |
4137 | CHECK_NUMBER (insval); | |
4138 | inserted = XFASTINT (insval); | |
4139 | } | |
4140 | } | |
4141 | else | |
4142 | { | |
6420e80c AS |
4143 | /* For the rationale of this see the comment on |
4144 | format-decode above. */ | |
6f2528d8 MR |
4145 | int opoint = PT; |
4146 | int opoint_byte = PT_BYTE; | |
4147 | int oinserted = ZV - BEGV; | |
cac4219c | 4148 | int ochars_modiff = CHARS_MODIFF; |
1f163f28 | 4149 | |
6f2528d8 MR |
4150 | TEMP_SET_PT_BOTH (BEGV, BEGV_BYTE); |
4151 | insval = call1 (XCAR (p), make_number (oinserted)); | |
4152 | if (!NILP (insval)) | |
4153 | { | |
4154 | CHECK_NUMBER (insval); | |
cac4219c MR |
4155 | if (ochars_modiff == CHARS_MODIFF) |
4156 | /* after_insert_file_functions didn't modify | |
4157 | buffer's characters => move point back to | |
4158 | position before inserted text and leave value of | |
6420e80c | 4159 | inserted alone. */ |
6f2528d8 | 4160 | SET_PT_BOTH (opoint, opoint_byte); |
cac4219c MR |
4161 | else |
4162 | /* after_insert_file_functions did modify buffer's | |
4163 | characters => consider entire buffer changed and | |
6420e80c | 4164 | leave point at point-min. */ |
cac4219c | 4165 | inserted = XFASTINT (insval); |
6f2528d8 MR |
4166 | } |
4167 | } | |
4168 | ||
4169 | QUIT; | |
4170 | p = XCDR (p); | |
ed8e506f | 4171 | } |
efdc16c9 | 4172 | |
6f2528d8 MR |
4173 | if (NILP (visit)) |
4174 | { | |
6420e80c AS |
4175 | current_buffer->undo_list = old_undo; |
4176 | if (CONSP (old_undo) && inserted != old_inserted) | |
6f2528d8 | 4177 | { |
6420e80c AS |
4178 | /* Adjust the last undo record for the size change during |
4179 | the format conversion. */ | |
6f2528d8 | 4180 | Lisp_Object tem = XCAR (old_undo); |
6420e80c AS |
4181 | if (CONSP (tem) && INTEGERP (XCAR (tem)) |
4182 | && INTEGERP (XCDR (tem)) | |
4183 | && XFASTINT (XCDR (tem)) == PT + old_inserted) | |
4184 | XSETCDR (tem, make_number (PT + inserted)); | |
6f2528d8 MR |
4185 | } |
4186 | } | |
6f2528d8 | 4187 | else |
1bc99c9c | 4188 | /* If undo_list was Qt before, keep it that way. |
6420e80c | 4189 | Otherwise start with an empty undo_list. */ |
1bc99c9c | 4190 | current_buffer->undo_list = EQ (old_undo, Qt) ? Qt : Qnil; |
efdc16c9 | 4191 | |
6f2528d8 | 4192 | unbind_to (count, Qnil); |
0d420e88 BG |
4193 | } |
4194 | ||
0342d8c5 RS |
4195 | /* Call after-change hooks for the inserted text, aside from the case |
4196 | of normal visiting (not with REPLACE), which is done in a new buffer | |
4197 | "before" the buffer is changed. */ | |
c8a6d68a | 4198 | if (inserted > 0 && total > 0 |
0342d8c5 | 4199 | && (NILP (visit) || !NILP (replace))) |
ce51c54c KH |
4200 | { |
4201 | signal_after_change (PT, 0, inserted); | |
4202 | update_compositions (PT, PT, CHECK_BORDER); | |
4203 | } | |
b56567b5 | 4204 | |
f8569325 DL |
4205 | if (!NILP (visit) |
4206 | && current_buffer->modtime == -1) | |
4207 | { | |
4208 | /* If visiting nonexistent file, return nil. */ | |
4209 | report_file_error ("Opening input file", Fcons (orig_filename, Qnil)); | |
d6a3cc15 RS |
4210 | } |
4211 | ||
1b978129 GM |
4212 | if (read_quit) |
4213 | Fsignal (Qquit, Qnil); | |
4214 | ||
ec7adf26 | 4215 | /* ??? Retval needs to be dealt with in all cases consistently. */ |
a1d2b64a | 4216 | if (NILP (val)) |
b1d1b865 | 4217 | val = Fcons (orig_filename, |
a1d2b64a RS |
4218 | Fcons (make_number (inserted), |
4219 | Qnil)); | |
4220 | ||
4221 | RETURN_UNGCPRO (unbind_to (count, val)); | |
570d7624 | 4222 | } |
7fded690 | 4223 | \f |
236a12f2 | 4224 | static Lisp_Object build_annotations P_ ((Lisp_Object, Lisp_Object)); |
d6a3cc15 | 4225 | |
6fc6f94b | 4226 | /* If build_annotations switched buffers, switch back to BUF. |
6fdaa9a0 KH |
4227 | Kill the temporary buffer that was selected in the meantime. |
4228 | ||
4229 | Since this kill only the last temporary buffer, some buffers remain | |
4230 | not killed if build_annotations switched buffers more than once. | |
4231 | -- K.Handa */ | |
6fc6f94b | 4232 | |
199607e4 | 4233 | static Lisp_Object |
6fc6f94b RS |
4234 | build_annotations_unwind (buf) |
4235 | Lisp_Object buf; | |
4236 | { | |
4237 | Lisp_Object tembuf; | |
4238 | ||
4239 | if (XBUFFER (buf) == current_buffer) | |
4240 | return Qnil; | |
4241 | tembuf = Fcurrent_buffer (); | |
4242 | Fset_buffer (buf); | |
4243 | Fkill_buffer (tembuf); | |
4244 | return Qnil; | |
4245 | } | |
4246 | ||
7c82a4a9 SM |
4247 | /* Decide the coding-system to encode the data with. */ |
4248 | ||
c934586d | 4249 | static Lisp_Object |
7c82a4a9 SM |
4250 | choose_write_coding_system (start, end, filename, |
4251 | append, visit, lockname, coding) | |
4252 | Lisp_Object start, end, filename, append, visit, lockname; | |
4253 | struct coding_system *coding; | |
4254 | { | |
4255 | Lisp_Object val; | |
75421805 | 4256 | Lisp_Object eol_parent = Qnil; |
7c82a4a9 | 4257 | |
6b61353c KH |
4258 | if (auto_saving |
4259 | && NILP (Fstring_equal (current_buffer->filename, | |
4260 | current_buffer->auto_save_file_name))) | |
75421805 KH |
4261 | { |
4262 | val = Qutf_8_emacs; | |
4263 | eol_parent = Qunix; | |
4264 | } | |
7c82a4a9 | 4265 | else if (!NILP (Vcoding_system_for_write)) |
42b01e1e KH |
4266 | { |
4267 | val = Vcoding_system_for_write; | |
4268 | if (coding_system_require_warning | |
4269 | && !NILP (Ffboundp (Vselect_safe_coding_system_function))) | |
4270 | /* Confirm that VAL can surely encode the current region. */ | |
4271 | val = call5 (Vselect_safe_coding_system_function, | |
4272 | start, end, Fcons (Qt, Fcons (val, Qnil)), | |
4273 | Qnil, filename); | |
4274 | } | |
7c82a4a9 SM |
4275 | else |
4276 | { | |
4277 | /* If the variable `buffer-file-coding-system' is set locally, | |
4278 | it means that the file was read with some kind of code | |
4279 | conversion or the variable is explicitly set by users. We | |
4280 | had better write it out with the same coding system even if | |
4281 | `enable-multibyte-characters' is nil. | |
4282 | ||
4283 | If it is not set locally, we anyway have to convert EOL | |
4284 | format if the default value of `buffer-file-coding-system' | |
4285 | tells that it is not Unix-like (LF only) format. */ | |
4286 | int using_default_coding = 0; | |
4287 | int force_raw_text = 0; | |
4288 | ||
4289 | val = current_buffer->buffer_file_coding_system; | |
4290 | if (NILP (val) | |
4291 | || NILP (Flocal_variable_p (Qbuffer_file_coding_system, Qnil))) | |
4292 | { | |
4293 | val = Qnil; | |
4294 | if (NILP (current_buffer->enable_multibyte_characters)) | |
4295 | force_raw_text = 1; | |
4296 | } | |
efdc16c9 | 4297 | |
7c82a4a9 SM |
4298 | if (NILP (val)) |
4299 | { | |
4300 | /* Check file-coding-system-alist. */ | |
4301 | Lisp_Object args[7], coding_systems; | |
4302 | ||
4303 | args[0] = Qwrite_region; args[1] = start; args[2] = end; | |
4304 | args[3] = filename; args[4] = append; args[5] = visit; | |
4305 | args[6] = lockname; | |
4306 | coding_systems = Ffind_operation_coding_system (7, args); | |
4307 | if (CONSP (coding_systems) && !NILP (XCDR (coding_systems))) | |
4308 | val = XCDR (coding_systems); | |
4309 | } | |
4310 | ||
c934586d | 4311 | if (NILP (val)) |
7c82a4a9 SM |
4312 | { |
4313 | /* If we still have not decided a coding system, use the | |
4314 | default value of buffer-file-coding-system. */ | |
4315 | val = current_buffer->buffer_file_coding_system; | |
4316 | using_default_coding = 1; | |
4317 | } | |
efdc16c9 | 4318 | |
db327c7e KH |
4319 | if (! NILP (val) && ! force_raw_text) |
4320 | { | |
4321 | Lisp_Object spec, attrs; | |
4322 | ||
4323 | CHECK_CODING_SYSTEM_GET_SPEC (val, spec); | |
4324 | attrs = AREF (spec, 0); | |
4325 | if (EQ (CODING_ATTR_TYPE (attrs), Qraw_text)) | |
4326 | force_raw_text = 1; | |
4327 | } | |
4328 | ||
7c82a4a9 SM |
4329 | if (!force_raw_text |
4330 | && !NILP (Ffboundp (Vselect_safe_coding_system_function))) | |
4331 | /* Confirm that VAL can surely encode the current region. */ | |
905a4276 PJ |
4332 | val = call5 (Vselect_safe_coding_system_function, |
4333 | start, end, val, Qnil, filename); | |
7c82a4a9 | 4334 | |
db327c7e KH |
4335 | /* If the decided coding-system doesn't specify end-of-line |
4336 | format, we use that of | |
4337 | `default-buffer-file-coding-system'. */ | |
c934586d KH |
4338 | if (! using_default_coding |
4339 | && ! NILP (buffer_defaults.buffer_file_coding_system)) | |
db327c7e KH |
4340 | val = (coding_inherit_eol_type |
4341 | (val, buffer_defaults.buffer_file_coding_system)); | |
7c82a4a9 | 4342 | |
db327c7e KH |
4343 | /* If we decide not to encode text, use `raw-text' or one of its |
4344 | subsidiaries. */ | |
7c82a4a9 | 4345 | if (force_raw_text) |
db327c7e | 4346 | val = raw_text_coding_system (val); |
7c82a4a9 SM |
4347 | } |
4348 | ||
75421805 | 4349 | val = coding_inherit_eol_type (val, eol_parent); |
c934586d | 4350 | setup_coding_system (val, coding); |
7c82a4a9 | 4351 | |
7c82a4a9 SM |
4352 | if (!STRINGP (start) && !NILP (current_buffer->selective_display)) |
4353 | coding->mode |= CODING_MODE_SELECTIVE_DISPLAY; | |
c934586d | 4354 | return val; |
7c82a4a9 SM |
4355 | } |
4356 | ||
de1d0127 | 4357 | DEFUN ("write-region", Fwrite_region, Swrite_region, 3, 7, |
8c1a1077 PJ |
4358 | "r\nFWrite region to file: \ni\ni\ni\np", |
4359 | doc: /* Write current region into specified file. | |
c2efea25 RS |
4360 | When called from a program, requires three arguments: |
4361 | START, END and FILENAME. START and END are normally buffer positions | |
4362 | specifying the part of the buffer to write. | |
4363 | If START is nil, that means to use the entire buffer contents. | |
4364 | If START is a string, then output that string to the file | |
4365 | instead of any buffer contents; END is ignored. | |
4366 | ||
8c1a1077 PJ |
4367 | Optional fourth argument APPEND if non-nil means |
4368 | append to existing file contents (if any). If it is an integer, | |
4369 | seek to that offset in the file before writing. | |
36e50520 | 4370 | Optional fifth argument VISIT, if t or a string, means |
8c1a1077 PJ |
4371 | set the last-save-file-modtime of buffer to this file's modtime |
4372 | and mark buffer not modified. | |
4373 | If VISIT is a string, it is a second file name; | |
4374 | the output goes to FILENAME, but the buffer is marked as visiting VISIT. | |
4375 | VISIT is also the file name to lock and unlock for clash detection. | |
4376 | If VISIT is neither t nor nil nor a string, | |
5f4e6aa9 | 4377 | that means do not display the \"Wrote file\" message. |
8c1a1077 PJ |
4378 | The optional sixth arg LOCKNAME, if non-nil, specifies the name to |
4379 | use for locking and unlocking, overriding FILENAME and VISIT. | |
4380 | The optional seventh arg MUSTBENEW, if non-nil, insists on a check | |
4381 | for an existing file with the same name. If MUSTBENEW is `excl', | |
4382 | that means to get an error if the file already exists; never overwrite. | |
4383 | If MUSTBENEW is neither nil nor `excl', that means ask for | |
4384 | confirmation before overwriting, but do go ahead and overwrite the file | |
4385 | if the user confirms. | |
8c1a1077 PJ |
4386 | |
4387 | This does code conversion according to the value of | |
4388 | `coding-system-for-write', `buffer-file-coding-system', or | |
4389 | `file-coding-system-alist', and sets the variable | |
4390 | `last-coding-system-used' to the coding system actually used. */) | |
4391 | (start, end, filename, append, visit, lockname, mustbenew) | |
f7b4065f | 4392 | Lisp_Object start, end, filename, append, visit, lockname, mustbenew; |
570d7624 JB |
4393 | { |
4394 | register int desc; | |
4395 | int failure; | |
6bbd7a29 | 4396 | int save_errno = 0; |
19290c65 | 4397 | const unsigned char *fn; |
570d7624 | 4398 | struct stat st; |
aed13378 | 4399 | int count = SPECPDL_INDEX (); |
6fc6f94b | 4400 | int count1; |
3eac9910 | 4401 | Lisp_Object handler; |
4ad827c5 | 4402 | Lisp_Object visit_file; |
65b7d3e7 | 4403 | Lisp_Object annotations; |
b1d1b865 | 4404 | Lisp_Object encoded_filename; |
d3a67486 SM |
4405 | int visiting = (EQ (visit, Qt) || STRINGP (visit)); |
4406 | int quietly = !NILP (visit); | |
7204a979 | 4407 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5; |
6fc6f94b | 4408 | struct buffer *given_buffer; |
5e570b75 | 4409 | #ifdef DOS_NT |
fa228724 | 4410 | int buffer_file_type = O_BINARY; |
5e570b75 | 4411 | #endif /* DOS_NT */ |
6fdaa9a0 | 4412 | struct coding_system coding; |
570d7624 | 4413 | |
d3a67486 | 4414 | if (current_buffer->base_buffer && visiting) |
95385625 RS |
4415 | error ("Cannot do file visiting in an indirect buffer"); |
4416 | ||
561cb8e1 | 4417 | if (!NILP (start) && !STRINGP (start)) |
570d7624 JB |
4418 | validate_region (&start, &end); |
4419 | ||
95c1c901 | 4420 | visit_file = Qnil; |
59fac292 | 4421 | GCPRO5 (start, filename, visit, visit_file, lockname); |
b56567b5 | 4422 | |
570d7624 | 4423 | filename = Fexpand_file_name (filename, Qnil); |
de1d0127 | 4424 | |
236a12f2 | 4425 | if (!NILP (mustbenew) && !EQ (mustbenew, Qexcl)) |
b8b29dc9 | 4426 | barf_or_query_if_file_exists (filename, "overwrite", 1, 0, 1); |
de1d0127 | 4427 | |
561cb8e1 | 4428 | if (STRINGP (visit)) |
e5176bae | 4429 | visit_file = Fexpand_file_name (visit, Qnil); |
4ad827c5 RS |
4430 | else |
4431 | visit_file = filename; | |
4432 | ||
7204a979 RS |
4433 | if (NILP (lockname)) |
4434 | lockname = visit_file; | |
4435 | ||
65b7d3e7 RS |
4436 | annotations = Qnil; |
4437 | ||
32f4334d RS |
4438 | /* If the file name has special constructs in it, |
4439 | call the corresponding file handler. */ | |
49307295 | 4440 | handler = Ffind_file_name_handler (filename, Qwrite_region); |
b56ad927 | 4441 | /* If FILENAME has no handler, see if VISIT has one. */ |
93c30b5f | 4442 | if (NILP (handler) && STRINGP (visit)) |
199607e4 | 4443 | handler = Ffind_file_name_handler (visit, Qwrite_region); |
3eac9910 | 4444 | |
32f4334d RS |
4445 | if (!NILP (handler)) |
4446 | { | |
32f4334d | 4447 | Lisp_Object val; |
51cf6d37 RS |
4448 | val = call6 (handler, Qwrite_region, start, end, |
4449 | filename, append, visit); | |
32f4334d | 4450 | |
d6a3cc15 | 4451 | if (visiting) |
32f4334d | 4452 | { |
95385625 | 4453 | SAVE_MODIFF = MODIFF; |
2acfd7ae | 4454 | XSETFASTINT (current_buffer->save_length, Z - BEG); |
3b7792ed | 4455 | current_buffer->filename = visit_file; |
32f4334d | 4456 | } |
09121adc | 4457 | UNGCPRO; |
32f4334d RS |
4458 | return val; |
4459 | } | |
4460 | ||
4a38de71 KH |
4461 | record_unwind_protect (save_restriction_restore, save_restriction_save ()); |
4462 | ||
561cb8e1 RS |
4463 | /* Special kludge to simplify auto-saving. */ |
4464 | if (NILP (start)) | |
4465 | { | |
6b3d752c SM |
4466 | /* Do it later, so write-region-annotate-function can work differently |
4467 | if we save "the buffer" vs "a region". | |
4468 | This is useful in tar-mode. --Stef | |
2acfd7ae | 4469 | XSETFASTINT (start, BEG); |
6b3d752c | 4470 | XSETFASTINT (end, Z); */ |
4a38de71 | 4471 | Fwiden (); |
561cb8e1 RS |
4472 | } |
4473 | ||
6fc6f94b | 4474 | record_unwind_protect (build_annotations_unwind, Fcurrent_buffer ()); |
aed13378 | 4475 | count1 = SPECPDL_INDEX (); |
6fc6f94b RS |
4476 | |
4477 | given_buffer = current_buffer; | |
bf3428a1 RS |
4478 | |
4479 | if (!STRINGP (start)) | |
236a12f2 | 4480 | { |
bf3428a1 RS |
4481 | annotations = build_annotations (start, end); |
4482 | ||
4483 | if (current_buffer != given_buffer) | |
4484 | { | |
4485 | XSETFASTINT (start, BEGV); | |
4486 | XSETFASTINT (end, ZV); | |
4487 | } | |
236a12f2 SM |
4488 | } |
4489 | ||
6b3d752c SM |
4490 | if (NILP (start)) |
4491 | { | |
4492 | XSETFASTINT (start, BEGV); | |
4493 | XSETFASTINT (end, ZV); | |
4494 | } | |
4495 | ||
236a12f2 SM |
4496 | UNGCPRO; |
4497 | ||
4498 | GCPRO5 (start, filename, annotations, visit_file, lockname); | |
4499 | ||
59fac292 SM |
4500 | /* Decide the coding-system to encode the data with. |
4501 | We used to make this choice before calling build_annotations, but that | |
4502 | leads to problems when a write-annotate-function takes care of | |
4503 | unsavable chars (as was the case with X-Symbol). */ | |
c934586d KH |
4504 | Vlast_coding_system_used |
4505 | = choose_write_coding_system (start, end, filename, | |
4506 | append, visit, lockname, &coding); | |
d6a3cc15 | 4507 | |
570d7624 JB |
4508 | #ifdef CLASH_DETECTION |
4509 | if (!auto_saving) | |
84f6296a | 4510 | { |
a9171faa | 4511 | #if 0 /* This causes trouble for GNUS. */ |
84f6296a RS |
4512 | /* If we've locked this file for some other buffer, |
4513 | query before proceeding. */ | |
4514 | if (!visiting && EQ (Ffile_locked_p (lockname), Qt)) | |
bffd00b0 | 4515 | call2 (intern ("ask-user-about-lock"), filename, Vuser_login_name); |
a9171faa | 4516 | #endif |
84f6296a RS |
4517 | |
4518 | lock_file (lockname); | |
4519 | } | |
570d7624 JB |
4520 | #endif /* CLASH_DETECTION */ |
4521 | ||
b1d1b865 RS |
4522 | encoded_filename = ENCODE_FILE (filename); |
4523 | ||
d5db4077 | 4524 | fn = SDATA (encoded_filename); |
570d7624 | 4525 | desc = -1; |
265a9e55 | 4526 | if (!NILP (append)) |
5e570b75 | 4527 | #ifdef DOS_NT |
68c45bf0 | 4528 | desc = emacs_open (fn, O_WRONLY | buffer_file_type, 0); |
5e570b75 | 4529 | #else /* not DOS_NT */ |
68c45bf0 | 4530 | desc = emacs_open (fn, O_WRONLY, 0); |
5e570b75 | 4531 | #endif /* not DOS_NT */ |
570d7624 | 4532 | |
b1d1b865 | 4533 | if (desc < 0 && (NILP (append) || errno == ENOENT)) |
5e570b75 | 4534 | #ifdef DOS_NT |
68c45bf0 | 4535 | desc = emacs_open (fn, |
95522746 GM |
4536 | O_WRONLY | O_CREAT | buffer_file_type |
4537 | | (EQ (mustbenew, Qexcl) ? O_EXCL : O_TRUNC), | |
68c45bf0 | 4538 | S_IREAD | S_IWRITE); |
5e570b75 | 4539 | #else /* not DOS_NT */ |
68c45bf0 | 4540 | desc = emacs_open (fn, O_WRONLY | O_TRUNC | O_CREAT |
7c752c80 | 4541 | | (EQ (mustbenew, Qexcl) ? O_EXCL : 0), |
68c45bf0 | 4542 | auto_saving ? auto_save_mode_bits : 0666); |
5e570b75 | 4543 | #endif /* not DOS_NT */ |
570d7624 JB |
4544 | |
4545 | if (desc < 0) | |
4546 | { | |
4547 | #ifdef CLASH_DETECTION | |
4548 | save_errno = errno; | |
7204a979 | 4549 | if (!auto_saving) unlock_file (lockname); |
570d7624 JB |
4550 | errno = save_errno; |
4551 | #endif /* CLASH_DETECTION */ | |
43fb7d9a | 4552 | UNGCPRO; |
570d7624 JB |
4553 | report_file_error ("Opening output file", Fcons (filename, Qnil)); |
4554 | } | |
4555 | ||
4556 | record_unwind_protect (close_file_unwind, make_number (desc)); | |
4557 | ||
c1c4693e | 4558 | if (!NILP (append) && !NILP (Ffile_regular_p (filename))) |
43fb7d9a DL |
4559 | { |
4560 | long ret; | |
efdc16c9 | 4561 | |
43fb7d9a DL |
4562 | if (NUMBERP (append)) |
4563 | ret = lseek (desc, XINT (append), 1); | |
4564 | else | |
4565 | ret = lseek (desc, 0, 2); | |
4566 | if (ret < 0) | |
4567 | { | |
570d7624 | 4568 | #ifdef CLASH_DETECTION |
43fb7d9a | 4569 | if (!auto_saving) unlock_file (lockname); |
570d7624 | 4570 | #endif /* CLASH_DETECTION */ |
43fb7d9a DL |
4571 | UNGCPRO; |
4572 | report_file_error ("Lseek error", Fcons (filename, Qnil)); | |
4573 | } | |
4574 | } | |
efdc16c9 | 4575 | |
43fb7d9a | 4576 | UNGCPRO; |
570d7624 | 4577 | |
db327c7e KH |
4578 | #if 0 |
4579 | /* The new encoding routine doesn't require the following. */ | |
4580 | ||
cdfb0f1d KH |
4581 | /* Whether VMS or not, we must move the gap to the next of newline |
4582 | when we must put designation sequences at beginning of line. */ | |
4583 | if (INTEGERP (start) | |
4584 | && coding.type == coding_type_iso2022 | |
4585 | && coding.flags & CODING_FLAG_ISO_DESIGNATE_AT_BOL | |
4586 | && GPT > BEG && GPT_ADDR[-1] != '\n') | |
ec7adf26 RS |
4587 | { |
4588 | int opoint = PT, opoint_byte = PT_BYTE; | |
4589 | scan_newline (PT, PT_BYTE, ZV, ZV_BYTE, 1, 0); | |
4590 | move_gap_both (PT, PT_BYTE); | |
4591 | SET_PT_BOTH (opoint, opoint_byte); | |
4592 | } | |
570d7624 JB |
4593 | #endif |
4594 | ||
4595 | failure = 0; | |
4596 | immediate_quit = 1; | |
4597 | ||
561cb8e1 | 4598 | if (STRINGP (start)) |
570d7624 | 4599 | { |
d5db4077 | 4600 | failure = 0 > a_write (desc, start, 0, SCHARS (start), |
ce51c54c | 4601 | &annotations, &coding); |
570d7624 JB |
4602 | save_errno = errno; |
4603 | } | |
4604 | else if (XINT (start) != XINT (end)) | |
4605 | { | |
db327c7e KH |
4606 | failure = 0 > a_write (desc, Qnil, |
4607 | XINT (start), XINT (end) - XINT (start), | |
4608 | &annotations, &coding); | |
4609 | save_errno = errno; | |
69f6e679 RS |
4610 | } |
4611 | else | |
4612 | { | |
4613 | /* If file was empty, still need to write the annotations */ | |
c8a6d68a | 4614 | coding.mode |= CODING_MODE_LAST_BLOCK; |
ce51c54c | 4615 | failure = 0 > a_write (desc, Qnil, XINT (end), 0, &annotations, &coding); |
6fdaa9a0 KH |
4616 | save_errno = errno; |
4617 | } | |
4618 | ||
c8a6d68a KH |
4619 | if (CODING_REQUIRE_FLUSHING (&coding) |
4620 | && !(coding.mode & CODING_MODE_LAST_BLOCK) | |
1354debd | 4621 | && ! failure) |
6fdaa9a0 KH |
4622 | { |
4623 | /* We have to flush out a data. */ | |
c8a6d68a | 4624 | coding.mode |= CODING_MODE_LAST_BLOCK; |
db327c7e | 4625 | failure = 0 > e_write (desc, Qnil, 1, 1, &coding); |
69f6e679 | 4626 | save_errno = errno; |
570d7624 JB |
4627 | } |
4628 | ||
4629 | immediate_quit = 0; | |
4630 | ||
6e23c83e | 4631 | #ifdef HAVE_FSYNC |
570d7624 JB |
4632 | /* Note fsync appears to change the modtime on BSD4.2 (both vax and sun). |
4633 | Disk full in NFS may be reported here. */ | |
1daffa1c RS |
4634 | /* mib says that closing the file will try to write as fast as NFS can do |
4635 | it, and that means the fsync here is not crucial for autosave files. */ | |
ccf61795 | 4636 | if (!auto_saving && !write_region_inhibit_fsync && fsync (desc) < 0) |
cb33c142 | 4637 | { |
6cff77fd AS |
4638 | /* If fsync fails with EINTR, don't treat that as serious. Also |
4639 | ignore EINVAL which happens when fsync is not supported on this | |
4640 | file. */ | |
4641 | if (errno != EINTR && errno != EINVAL) | |
cb33c142 KH |
4642 | failure = 1, save_errno = errno; |
4643 | } | |
570d7624 JB |
4644 | #endif |
4645 | ||
199607e4 | 4646 | /* Spurious "file has changed on disk" warnings have been |
570d7624 JB |
4647 | observed on Suns as well. |
4648 | It seems that `close' can change the modtime, under nfs. | |
4649 | ||
4650 | (This has supposedly been fixed in Sunos 4, | |
4651 | but who knows about all the other machines with NFS?) */ | |
4652 | #if 0 | |
4653 | ||
570d7624 JB |
4654 | #define FOO |
4655 | fstat (desc, &st); | |
570d7624 JB |
4656 | #endif |
4657 | ||
4658 | /* NFS can report a write failure now. */ | |
68c45bf0 | 4659 | if (emacs_close (desc) < 0) |
570d7624 JB |
4660 | failure = 1, save_errno = errno; |
4661 | ||
570d7624 JB |
4662 | #ifndef FOO |
4663 | stat (fn, &st); | |
4664 | #endif | |
6fc6f94b RS |
4665 | /* Discard the unwind protect for close_file_unwind. */ |
4666 | specpdl_ptr = specpdl + count1; | |
4667 | /* Restore the original current buffer. */ | |
98295b48 | 4668 | visit_file = unbind_to (count, visit_file); |
570d7624 JB |
4669 | |
4670 | #ifdef CLASH_DETECTION | |
4671 | if (!auto_saving) | |
7204a979 | 4672 | unlock_file (lockname); |
570d7624 JB |
4673 | #endif /* CLASH_DETECTION */ |
4674 | ||
4675 | /* Do this before reporting IO error | |
4676 | to avoid a "file has changed on disk" warning on | |
4677 | next attempt to save. */ | |
d6a3cc15 | 4678 | if (visiting) |
570d7624 JB |
4679 | current_buffer->modtime = st.st_mtime; |
4680 | ||
4681 | if (failure) | |
d5db4077 | 4682 | error ("IO error writing %s: %s", SDATA (filename), |
68c45bf0 | 4683 | emacs_strerror (save_errno)); |
570d7624 | 4684 | |
d6a3cc15 | 4685 | if (visiting) |
570d7624 | 4686 | { |
95385625 | 4687 | SAVE_MODIFF = MODIFF; |
2acfd7ae | 4688 | XSETFASTINT (current_buffer->save_length, Z - BEG); |
3b7792ed | 4689 | current_buffer->filename = visit_file; |
f4226e89 | 4690 | update_mode_lines++; |
570d7624 | 4691 | } |
d6a3cc15 | 4692 | else if (quietly) |
6b61353c KH |
4693 | { |
4694 | if (auto_saving | |
4695 | && ! NILP (Fstring_equal (current_buffer->filename, | |
4696 | current_buffer->auto_save_file_name))) | |
4697 | SAVE_MODIFF = MODIFF; | |
4698 | ||
4699 | return Qnil; | |
4700 | } | |
570d7624 JB |
4701 | |
4702 | if (!auto_saving) | |
6b61353c | 4703 | message_with_string ((INTEGERP (append) |
0c328a0e RS |
4704 | ? "Updated %s" |
4705 | : ! NILP (append) | |
4706 | ? "Added to %s" | |
4707 | : "Wrote %s"), | |
4708 | visit_file, 1); | |
570d7624 JB |
4709 | |
4710 | return Qnil; | |
4711 | } | |
ec7adf26 | 4712 | \f |
d6a3cc15 RS |
4713 | Lisp_Object merge (); |
4714 | ||
4715 | DEFUN ("car-less-than-car", Fcar_less_than_car, Scar_less_than_car, 2, 2, 0, | |
8c1a1077 PJ |
4716 | doc: /* Return t if (car A) is numerically less than (car B). */) |
4717 | (a, b) | |
d6a3cc15 RS |
4718 | Lisp_Object a, b; |
4719 | { | |
4720 | return Flss (Fcar (a), Fcar (b)); | |
4721 | } | |
4722 | ||
4723 | /* Build the complete list of annotations appropriate for writing out | |
4724 | the text between START and END, by calling all the functions in | |
6fc6f94b RS |
4725 | write-region-annotate-functions and merging the lists they return. |
4726 | If one of these functions switches to a different buffer, we assume | |
4727 | that buffer contains altered text. Therefore, the caller must | |
4728 | make sure to restore the current buffer in all cases, | |
4729 | as save-excursion would do. */ | |
d6a3cc15 RS |
4730 | |
4731 | static Lisp_Object | |
236a12f2 SM |
4732 | build_annotations (start, end) |
4733 | Lisp_Object start, end; | |
d6a3cc15 RS |
4734 | { |
4735 | Lisp_Object annotations; | |
4736 | Lisp_Object p, res; | |
4737 | struct gcpro gcpro1, gcpro2; | |
0a20b684 | 4738 | Lisp_Object original_buffer; |
bd235610 | 4739 | int i, used_global = 0; |
0a20b684 RS |
4740 | |
4741 | XSETBUFFER (original_buffer, current_buffer); | |
d6a3cc15 RS |
4742 | |
4743 | annotations = Qnil; | |
4744 | p = Vwrite_region_annotate_functions; | |
4745 | GCPRO2 (annotations, p); | |
28c3eb5a | 4746 | while (CONSP (p)) |
d6a3cc15 | 4747 | { |
6fc6f94b | 4748 | struct buffer *given_buffer = current_buffer; |
bd235610 SM |
4749 | if (EQ (Qt, XCAR (p)) && !used_global) |
4750 | { /* Use the global value of the hook. */ | |
4751 | Lisp_Object arg[2]; | |
4752 | used_global = 1; | |
4753 | arg[0] = Fdefault_value (Qwrite_region_annotate_functions); | |
4754 | arg[1] = XCDR (p); | |
4755 | p = Fappend (2, arg); | |
4756 | continue; | |
4757 | } | |
6fc6f94b | 4758 | Vwrite_region_annotations_so_far = annotations; |
28c3eb5a | 4759 | res = call2 (XCAR (p), start, end); |
6fc6f94b RS |
4760 | /* If the function makes a different buffer current, |
4761 | assume that means this buffer contains altered text to be output. | |
4762 | Reset START and END from the buffer bounds | |
4763 | and discard all previous annotations because they should have | |
4764 | been dealt with by this function. */ | |
4765 | if (current_buffer != given_buffer) | |
4766 | { | |
3cf29f61 RS |
4767 | XSETFASTINT (start, BEGV); |
4768 | XSETFASTINT (end, ZV); | |
6fc6f94b RS |
4769 | annotations = Qnil; |
4770 | } | |
d6a3cc15 RS |
4771 | Flength (res); /* Check basic validity of return value */ |
4772 | annotations = merge (annotations, res, Qcar_less_than_car); | |
28c3eb5a | 4773 | p = XCDR (p); |
d6a3cc15 | 4774 | } |
0d420e88 BG |
4775 | |
4776 | /* Now do the same for annotation functions implied by the file-format */ | |
f844ba4e LT |
4777 | if (auto_saving && (!EQ (current_buffer->auto_save_file_format, Qt))) |
4778 | p = current_buffer->auto_save_file_format; | |
0d420e88 BG |
4779 | else |
4780 | p = current_buffer->file_format; | |
28c3eb5a | 4781 | for (i = 0; CONSP (p); p = XCDR (p), ++i) |
0d420e88 BG |
4782 | { |
4783 | struct buffer *given_buffer = current_buffer; | |
efdc16c9 | 4784 | |
0d420e88 | 4785 | Vwrite_region_annotations_so_far = annotations; |
532ed661 GM |
4786 | |
4787 | /* Value is either a list of annotations or nil if the function | |
4788 | has written annotations to a temporary buffer, which is now | |
4789 | current. */ | |
28c3eb5a | 4790 | res = call5 (Qformat_annotate_function, XCAR (p), start, end, |
532ed661 | 4791 | original_buffer, make_number (i)); |
0d420e88 BG |
4792 | if (current_buffer != given_buffer) |
4793 | { | |
3cf29f61 RS |
4794 | XSETFASTINT (start, BEGV); |
4795 | XSETFASTINT (end, ZV); | |
0d420e88 BG |
4796 | annotations = Qnil; |
4797 | } | |
efdc16c9 | 4798 | |
532ed661 GM |
4799 | if (CONSP (res)) |
4800 | annotations = merge (annotations, res, Qcar_less_than_car); | |
0d420e88 | 4801 | } |
6fdaa9a0 | 4802 | |
236a12f2 SM |
4803 | UNGCPRO; |
4804 | return annotations; | |
4805 | } | |
4806 | ||
ec7adf26 | 4807 | \f |
ce51c54c KH |
4808 | /* Write to descriptor DESC the NCHARS chars starting at POS of STRING. |
4809 | If STRING is nil, POS is the character position in the current buffer. | |
d6a3cc15 | 4810 | Intersperse with them the annotations from *ANNOT |
ce51c54c | 4811 | which fall within the range of POS to POS + NCHARS, |
d6a3cc15 RS |
4812 | each at its appropriate position. |
4813 | ||
ec7adf26 RS |
4814 | We modify *ANNOT by discarding elements as we use them up. |
4815 | ||
d6a3cc15 RS |
4816 | The return value is negative in case of system call failure. */ |
4817 | ||
ec7adf26 | 4818 | static int |
ce51c54c | 4819 | a_write (desc, string, pos, nchars, annot, coding) |
d6a3cc15 | 4820 | int desc; |
ce51c54c KH |
4821 | Lisp_Object string; |
4822 | register int nchars; | |
4823 | int pos; | |
d6a3cc15 | 4824 | Lisp_Object *annot; |
6fdaa9a0 | 4825 | struct coding_system *coding; |
d6a3cc15 RS |
4826 | { |
4827 | Lisp_Object tem; | |
4828 | int nextpos; | |
ce51c54c | 4829 | int lastpos = pos + nchars; |
d6a3cc15 | 4830 | |
eb15aa18 | 4831 | while (NILP (*annot) || CONSP (*annot)) |
d6a3cc15 RS |
4832 | { |
4833 | tem = Fcar_safe (Fcar (*annot)); | |
ce51c54c | 4834 | nextpos = pos - 1; |
ec7adf26 | 4835 | if (INTEGERP (tem)) |
ce51c54c | 4836 | nextpos = XFASTINT (tem); |
ec7adf26 RS |
4837 | |
4838 | /* If there are no more annotations in this range, | |
4839 | output the rest of the range all at once. */ | |
ce51c54c KH |
4840 | if (! (nextpos >= pos && nextpos <= lastpos)) |
4841 | return e_write (desc, string, pos, lastpos, coding); | |
ec7adf26 RS |
4842 | |
4843 | /* Output buffer text up to the next annotation's position. */ | |
ce51c54c | 4844 | if (nextpos > pos) |
d6a3cc15 | 4845 | { |
055a28c9 | 4846 | if (0 > e_write (desc, string, pos, nextpos, coding)) |
d6a3cc15 | 4847 | return -1; |
ce51c54c | 4848 | pos = nextpos; |
d6a3cc15 | 4849 | } |
ec7adf26 | 4850 | /* Output the annotation. */ |
d6a3cc15 RS |
4851 | tem = Fcdr (Fcar (*annot)); |
4852 | if (STRINGP (tem)) | |
4853 | { | |
d5db4077 | 4854 | if (0 > e_write (desc, tem, 0, SCHARS (tem), coding)) |
d6a3cc15 RS |
4855 | return -1; |
4856 | } | |
4857 | *annot = Fcdr (*annot); | |
4858 | } | |
dfcf069d | 4859 | return 0; |
d6a3cc15 RS |
4860 | } |
4861 | ||
6fdaa9a0 | 4862 | |
ce51c54c KH |
4863 | /* Write text in the range START and END into descriptor DESC, |
4864 | encoding them with coding system CODING. If STRING is nil, START | |
4865 | and END are character positions of the current buffer, else they | |
4866 | are indexes to the string STRING. */ | |
ec7adf26 RS |
4867 | |
4868 | static int | |
ce51c54c | 4869 | e_write (desc, string, start, end, coding) |
570d7624 | 4870 | int desc; |
ce51c54c KH |
4871 | Lisp_Object string; |
4872 | int start, end; | |
6fdaa9a0 | 4873 | struct coding_system *coding; |
570d7624 | 4874 | { |
ce51c54c KH |
4875 | if (STRINGP (string)) |
4876 | { | |
db327c7e | 4877 | start = 0; |
8f924df7 | 4878 | end = SCHARS (string); |
ce51c54c | 4879 | } |
570d7624 | 4880 | |
6fdaa9a0 KH |
4881 | /* We used to have a code for handling selective display here. But, |
4882 | now it is handled within encode_coding. */ | |
01ca97a2 KH |
4883 | |
4884 | while (start < end) | |
570d7624 | 4885 | { |
01ca97a2 | 4886 | if (STRINGP (string)) |
6ad568dd | 4887 | { |
01ca97a2 KH |
4888 | coding->src_multibyte = SCHARS (string) < SBYTES (string); |
4889 | if (CODING_REQUIRE_ENCODING (coding)) | |
4890 | { | |
4891 | encode_coding_object (coding, string, | |
4892 | start, string_char_to_byte (string, start), | |
4893 | end, string_char_to_byte (string, end), Qt); | |
4894 | } | |
4895 | else | |
4896 | { | |
4897 | coding->dst_object = string; | |
4898 | coding->consumed_char = SCHARS (string); | |
4899 | coding->produced = SBYTES (string); | |
4900 | } | |
6ad568dd | 4901 | } |
db327c7e | 4902 | else |
6ad568dd | 4903 | { |
01ca97a2 KH |
4904 | int start_byte = CHAR_TO_BYTE (start); |
4905 | int end_byte = CHAR_TO_BYTE (end); | |
b4132433 | 4906 | |
01ca97a2 KH |
4907 | coding->src_multibyte = (end - start) < (end_byte - start_byte); |
4908 | if (CODING_REQUIRE_ENCODING (coding)) | |
4909 | { | |
4910 | encode_coding_object (coding, Fcurrent_buffer (), | |
4911 | start, start_byte, end, end_byte, Qt); | |
4912 | } | |
4913 | else | |
4914 | { | |
4915 | coding->dst_object = Qnil; | |
4916 | coding->dst_pos_byte = start_byte; | |
4917 | if (start >= GPT || end <= GPT) | |
4918 | { | |
4919 | coding->consumed_char = end - start; | |
4920 | coding->produced = end_byte - start_byte; | |
4921 | } | |
4922 | else | |
4923 | { | |
4924 | coding->consumed_char = GPT - start; | |
4925 | coding->produced = GPT_BYTE - start_byte; | |
4926 | } | |
4927 | } | |
c185d744 | 4928 | } |
01ca97a2 KH |
4929 | |
4930 | if (coding->produced > 0) | |
c185d744 | 4931 | { |
01ca97a2 KH |
4932 | coding->produced -= |
4933 | emacs_write (desc, | |
4934 | STRINGP (coding->dst_object) | |
4935 | ? SDATA (coding->dst_object) | |
4936 | : BYTE_POS_ADDR (coding->dst_pos_byte), | |
4937 | coding->produced); | |
4938 | ||
4939 | if (coding->produced) | |
4940 | return -1; | |
570d7624 | 4941 | } |
01ca97a2 | 4942 | start += coding->consumed_char; |
c185d744 KH |
4943 | } |
4944 | ||
4945 | return 0; | |
570d7624 | 4946 | } |
ec7adf26 | 4947 | \f |
570d7624 | 4948 | DEFUN ("verify-visited-file-modtime", Fverify_visited_file_modtime, |
8c1a1077 PJ |
4949 | Sverify_visited_file_modtime, 1, 1, 0, |
4950 | doc: /* Return t if last mod time of BUF's visited file matches what BUF records. | |
6b61353c KH |
4951 | This means that the file has not been changed since it was visited or saved. |
4952 | See Info node `(elisp)Modification Time' for more details. */) | |
8c1a1077 | 4953 | (buf) |
570d7624 JB |
4954 | Lisp_Object buf; |
4955 | { | |
4956 | struct buffer *b; | |
4957 | struct stat st; | |
32f4334d | 4958 | Lisp_Object handler; |
b1d1b865 | 4959 | Lisp_Object filename; |
570d7624 | 4960 | |
b7826503 | 4961 | CHECK_BUFFER (buf); |
570d7624 JB |
4962 | b = XBUFFER (buf); |
4963 | ||
93c30b5f | 4964 | if (!STRINGP (b->filename)) return Qt; |
570d7624 JB |
4965 | if (b->modtime == 0) return Qt; |
4966 | ||
32f4334d RS |
4967 | /* If the file name has special constructs in it, |
4968 | call the corresponding file handler. */ | |
49307295 KH |
4969 | handler = Ffind_file_name_handler (b->filename, |
4970 | Qverify_visited_file_modtime); | |
32f4334d | 4971 | if (!NILP (handler)) |
09121adc | 4972 | return call2 (handler, Qverify_visited_file_modtime, buf); |
32f4334d | 4973 | |
b1d1b865 RS |
4974 | filename = ENCODE_FILE (b->filename); |
4975 | ||
d5db4077 | 4976 | if (stat (SDATA (filename), &st) < 0) |
570d7624 JB |
4977 | { |
4978 | /* If the file doesn't exist now and didn't exist before, | |
4979 | we say that it isn't modified, provided the error is a tame one. */ | |
4980 | if (errno == ENOENT || errno == EACCES || errno == ENOTDIR) | |
4981 | st.st_mtime = -1; | |
4982 | else | |
4983 | st.st_mtime = 0; | |
4984 | } | |
4985 | if (st.st_mtime == b->modtime | |
4986 | /* If both are positive, accept them if they are off by one second. */ | |
4987 | || (st.st_mtime > 0 && b->modtime > 0 | |
4988 | && (st.st_mtime == b->modtime + 1 | |
4989 | || st.st_mtime == b->modtime - 1))) | |
4990 | return Qt; | |
4991 | return Qnil; | |
4992 | } | |
4993 | ||
4994 | DEFUN ("clear-visited-file-modtime", Fclear_visited_file_modtime, | |
8c1a1077 PJ |
4995 | Sclear_visited_file_modtime, 0, 0, 0, |
4996 | doc: /* Clear out records of last mod time of visited file. | |
4997 | Next attempt to save will certainly not complain of a discrepancy. */) | |
4998 | () | |
570d7624 JB |
4999 | { |
5000 | current_buffer->modtime = 0; | |
5001 | return Qnil; | |
5002 | } | |
5003 | ||
f5d5eccf | 5004 | DEFUN ("visited-file-modtime", Fvisited_file_modtime, |
8c1a1077 PJ |
5005 | Svisited_file_modtime, 0, 0, 0, |
5006 | doc: /* Return the current buffer's recorded visited file modification time. | |
e5fcddc8 | 5007 | The value is a list of the form (HIGH LOW), like the time values |
6b61353c KH |
5008 | that `file-attributes' returns. If the current buffer has no recorded |
5009 | file modification time, this function returns 0. | |
5010 | See Info node `(elisp)Modification Time' for more details. */) | |
8c1a1077 | 5011 | () |
f5d5eccf | 5012 | { |
73ff9d42 RS |
5013 | if (! current_buffer->modtime) |
5014 | return make_number (0); | |
5015 | return make_time ((time_t) current_buffer->modtime); | |
f5d5eccf RS |
5016 | } |
5017 | ||
570d7624 | 5018 | DEFUN ("set-visited-file-modtime", Fset_visited_file_modtime, |
8c1a1077 PJ |
5019 | Sset_visited_file_modtime, 0, 1, 0, |
5020 | doc: /* Update buffer's recorded modification time from the visited file's time. | |
5021 | Useful if the buffer was not read from the file normally | |
5022 | or if the file itself has been changed for some known benign reason. | |
5023 | An argument specifies the modification time value to use | |
5024 | \(instead of that of the visited file), in the form of a list | |
5025 | \(HIGH . LOW) or (HIGH LOW). */) | |
5026 | (time_list) | |
f5d5eccf | 5027 | Lisp_Object time_list; |
570d7624 | 5028 | { |
f5d5eccf RS |
5029 | if (!NILP (time_list)) |
5030 | current_buffer->modtime = cons_to_long (time_list); | |
5031 | else | |
5032 | { | |
5033 | register Lisp_Object filename; | |
5034 | struct stat st; | |
5035 | Lisp_Object handler; | |
570d7624 | 5036 | |
f5d5eccf | 5037 | filename = Fexpand_file_name (current_buffer->filename, Qnil); |
32f4334d | 5038 | |
f5d5eccf RS |
5039 | /* If the file name has special constructs in it, |
5040 | call the corresponding file handler. */ | |
49307295 | 5041 | handler = Ffind_file_name_handler (filename, Qset_visited_file_modtime); |
f5d5eccf | 5042 | if (!NILP (handler)) |
caf3c431 | 5043 | /* The handler can find the file name the same way we did. */ |
76c881b0 | 5044 | return call2 (handler, Qset_visited_file_modtime, Qnil); |
b1d1b865 RS |
5045 | |
5046 | filename = ENCODE_FILE (filename); | |
5047 | ||
d5db4077 | 5048 | if (stat (SDATA (filename), &st) >= 0) |
f5d5eccf RS |
5049 | current_buffer->modtime = st.st_mtime; |
5050 | } | |
570d7624 JB |
5051 | |
5052 | return Qnil; | |
5053 | } | |
5054 | \f | |
5055 | Lisp_Object | |
d7f31e22 GM |
5056 | auto_save_error (error) |
5057 | Lisp_Object error; | |
570d7624 | 5058 | { |
d7f31e22 GM |
5059 | Lisp_Object args[3], msg; |
5060 | int i, nbytes; | |
5061 | struct gcpro gcpro1; | |
dfc22242 KS |
5062 | char *msgbuf; |
5063 | USE_SAFE_ALLOCA; | |
efdc16c9 | 5064 | |
ca730bf0 CY |
5065 | auto_save_error_occurred = 1; |
5066 | ||
385ed61f | 5067 | ring_bell (XFRAME (selected_frame)); |
efdc16c9 | 5068 | |
d7f31e22 GM |
5069 | args[0] = build_string ("Auto-saving %s: %s"); |
5070 | args[1] = current_buffer->name; | |
5071 | args[2] = Ferror_message_string (error); | |
5072 | msg = Fformat (3, args); | |
5073 | GCPRO1 (msg); | |
d5db4077 | 5074 | nbytes = SBYTES (msg); |
dfc22242 KS |
5075 | SAFE_ALLOCA (msgbuf, char *, nbytes); |
5076 | bcopy (SDATA (msg), msgbuf, nbytes); | |
d7f31e22 GM |
5077 | |
5078 | for (i = 0; i < 3; ++i) | |
5079 | { | |
5080 | if (i == 0) | |
dfc22242 | 5081 | message2 (msgbuf, nbytes, STRING_MULTIBYTE (msg)); |
d7f31e22 | 5082 | else |
dfc22242 | 5083 | message2_nolog (msgbuf, nbytes, STRING_MULTIBYTE (msg)); |
d7f31e22 GM |
5084 | Fsleep_for (make_number (1), Qnil); |
5085 | } | |
5086 | ||
e01f7773 | 5087 | SAFE_FREE (); |
d7f31e22 | 5088 | UNGCPRO; |
570d7624 JB |
5089 | return Qnil; |
5090 | } | |
5091 | ||
5092 | Lisp_Object | |
5093 | auto_save_1 () | |
5094 | { | |
570d7624 | 5095 | struct stat st; |
d4a42098 KS |
5096 | Lisp_Object modes; |
5097 | ||
5098 | auto_save_mode_bits = 0666; | |
570d7624 JB |
5099 | |
5100 | /* Get visited file's mode to become the auto save file's mode. */ | |
d4a42098 KS |
5101 | if (! NILP (current_buffer->filename)) |
5102 | { | |
5103 | if (stat (SDATA (current_buffer->filename), &st) >= 0) | |
5104 | /* But make sure we can overwrite it later! */ | |
5105 | auto_save_mode_bits = st.st_mode | 0600; | |
5106 | else if ((modes = Ffile_modes (current_buffer->filename), | |
5107 | INTEGERP (modes))) | |
5108 | /* Remote files don't cooperate with stat. */ | |
5109 | auto_save_mode_bits = XINT (modes) | 0600; | |
5110 | } | |
570d7624 JB |
5111 | |
5112 | return | |
699b53bc CY |
5113 | Fwrite_region (Qnil, Qnil, current_buffer->auto_save_file_name, Qnil, |
5114 | NILP (Vauto_save_visited_file_name) ? Qlambda : Qt, | |
5115 | Qnil, Qnil); | |
570d7624 JB |
5116 | } |
5117 | ||
e54d3b5d | 5118 | static Lisp_Object |
fff7e982 KS |
5119 | do_auto_save_unwind (arg) /* used as unwind-protect function */ |
5120 | Lisp_Object arg; | |
e54d3b5d | 5121 | { |
fff7e982 | 5122 | FILE *stream = (FILE *) XSAVE_VALUE (arg)->pointer; |
3be3c08e | 5123 | auto_saving = 0; |
fff7e982 | 5124 | if (stream != NULL) |
aab12958 YM |
5125 | { |
5126 | BLOCK_INPUT; | |
5127 | fclose (stream); | |
5128 | UNBLOCK_INPUT; | |
5129 | } | |
e54d3b5d RS |
5130 | return Qnil; |
5131 | } | |
5132 | ||
a8c828be RS |
5133 | static Lisp_Object |
5134 | do_auto_save_unwind_1 (value) /* used as unwind-protect function */ | |
5135 | Lisp_Object value; | |
5136 | { | |
5137 | minibuffer_auto_raise = XINT (value); | |
5138 | return Qnil; | |
5139 | } | |
5140 | ||
5794dd61 RS |
5141 | static Lisp_Object |
5142 | do_auto_save_make_dir (dir) | |
5143 | Lisp_Object dir; | |
5144 | { | |
26816cbf SG |
5145 | Lisp_Object mode; |
5146 | ||
5147 | call2 (Qmake_directory, dir, Qt); | |
5148 | XSETFASTINT (mode, 0700); | |
5149 | return Fset_file_modes (dir, mode); | |
5794dd61 RS |
5150 | } |
5151 | ||
5152 | static Lisp_Object | |
5153 | do_auto_save_eh (ignore) | |
5154 | Lisp_Object ignore; | |
5155 | { | |
5156 | return Qnil; | |
5157 | } | |
5158 | ||
570d7624 | 5159 | DEFUN ("do-auto-save", Fdo_auto_save, Sdo_auto_save, 0, 2, "", |
8c1a1077 PJ |
5160 | doc: /* Auto-save all buffers that need it. |
5161 | This is all buffers that have auto-saving enabled | |
5162 | and are changed since last auto-saved. | |
5163 | Auto-saving writes the buffer into a file | |
5164 | so that your editing is not lost if the system crashes. | |
5165 | This file is not the file you visited; that changes only when you save. | |
5166 | Normally we run the normal hook `auto-save-hook' before saving. | |
5167 | ||
5168 | A non-nil NO-MESSAGE argument means do not print any message if successful. | |
5169 | A non-nil CURRENT-ONLY argument means save only current buffer. */) | |
5170 | (no_message, current_only) | |
17857782 | 5171 | Lisp_Object no_message, current_only; |
570d7624 JB |
5172 | { |
5173 | struct buffer *old = current_buffer, *b; | |
5174 | Lisp_Object tail, buf; | |
5175 | int auto_saved = 0; | |
f14b1c68 | 5176 | int do_handled_files; |
ff4c9993 | 5177 | Lisp_Object oquit; |
fff7e982 | 5178 | FILE *stream = NULL; |
aed13378 | 5179 | int count = SPECPDL_INDEX (); |
a8c828be | 5180 | int orig_minibuffer_auto_raise = minibuffer_auto_raise; |
5794dd61 | 5181 | int old_message_p = 0; |
d57563b6 | 5182 | struct gcpro gcpro1, gcpro2; |
38da540d RS |
5183 | |
5184 | if (max_specpdl_size < specpdl_size + 40) | |
5185 | max_specpdl_size = specpdl_size + 40; | |
5186 | ||
5187 | if (minibuf_level) | |
5188 | no_message = Qt; | |
5189 | ||
5794dd61 RS |
5190 | if (NILP (no_message)) |
5191 | { | |
5192 | old_message_p = push_message (); | |
5193 | record_unwind_protect (pop_message_unwind, Qnil); | |
5194 | } | |
efdc16c9 | 5195 | |
ff4c9993 RS |
5196 | /* Ordinarily don't quit within this function, |
5197 | but don't make it impossible to quit (in case we get hung in I/O). */ | |
5198 | oquit = Vquit_flag; | |
5199 | Vquit_flag = Qnil; | |
570d7624 JB |
5200 | |
5201 | /* No GCPRO needed, because (when it matters) all Lisp_Object variables | |
5202 | point to non-strings reached from Vbuffer_alist. */ | |
5203 | ||
265a9e55 | 5204 | if (!NILP (Vrun_hooks)) |
570d7624 JB |
5205 | call1 (Vrun_hooks, intern ("auto-save-hook")); |
5206 | ||
e54d3b5d RS |
5207 | if (STRINGP (Vauto_save_list_file_name)) |
5208 | { | |
0894672f | 5209 | Lisp_Object listfile; |
efdc16c9 | 5210 | |
258fd2cb | 5211 | listfile = Fexpand_file_name (Vauto_save_list_file_name, Qnil); |
0894672f GM |
5212 | |
5213 | /* Don't try to create the directory when shutting down Emacs, | |
5214 | because creating the directory might signal an error, and | |
5215 | that would leave Emacs in a strange state. */ | |
5216 | if (!NILP (Vrun_hooks)) | |
5217 | { | |
5218 | Lisp_Object dir; | |
d57563b6 RS |
5219 | dir = Qnil; |
5220 | GCPRO2 (dir, listfile); | |
0894672f GM |
5221 | dir = Ffile_name_directory (listfile); |
5222 | if (NILP (Ffile_directory_p (dir))) | |
5794dd61 RS |
5223 | internal_condition_case_1 (do_auto_save_make_dir, |
5224 | dir, Fcons (Fcons (Qfile_error, Qnil), Qnil), | |
5225 | do_auto_save_eh); | |
d57563b6 | 5226 | UNGCPRO; |
0894672f | 5227 | } |
efdc16c9 | 5228 | |
d5db4077 | 5229 | stream = fopen (SDATA (listfile), "w"); |
1b335d29 | 5230 | } |
199607e4 | 5231 | |
fff7e982 KS |
5232 | record_unwind_protect (do_auto_save_unwind, |
5233 | make_save_value (stream, 0)); | |
a8c828be RS |
5234 | record_unwind_protect (do_auto_save_unwind_1, |
5235 | make_number (minibuffer_auto_raise)); | |
5236 | minibuffer_auto_raise = 0; | |
3be3c08e | 5237 | auto_saving = 1; |
ca730bf0 | 5238 | auto_save_error_occurred = 0; |
3be3c08e | 5239 | |
6b61353c KH |
5240 | /* On first pass, save all files that don't have handlers. |
5241 | On second pass, save all files that do have handlers. | |
5242 | ||
5243 | If Emacs is crashing, the handlers may tweak what is causing | |
5244 | Emacs to crash in the first place, and it would be a shame if | |
5245 | Emacs failed to autosave perfectly ordinary files because it | |
5246 | couldn't handle some ange-ftp'd file. */ | |
5247 | ||
f14b1c68 | 5248 | for (do_handled_files = 0; do_handled_files < 2; do_handled_files++) |
8e50cc2d | 5249 | for (tail = Vbuffer_alist; CONSP (tail); tail = XCDR (tail)) |
f14b1c68 | 5250 | { |
03699b14 | 5251 | buf = XCDR (XCAR (tail)); |
f14b1c68 | 5252 | b = XBUFFER (buf); |
199607e4 | 5253 | |
e54d3b5d | 5254 | /* Record all the buffers that have auto save mode |
258fd2cb RS |
5255 | in the special file that lists them. For each of these buffers, |
5256 | Record visited name (if any) and auto save name. */ | |
93c30b5f | 5257 | if (STRINGP (b->auto_save_file_name) |
1b335d29 | 5258 | && stream != NULL && do_handled_files == 0) |
e54d3b5d | 5259 | { |
aab12958 | 5260 | BLOCK_INPUT; |
258fd2cb RS |
5261 | if (!NILP (b->filename)) |
5262 | { | |
d5db4077 KR |
5263 | fwrite (SDATA (b->filename), 1, |
5264 | SBYTES (b->filename), stream); | |
258fd2cb | 5265 | } |
1b335d29 | 5266 | putc ('\n', stream); |
d5db4077 KR |
5267 | fwrite (SDATA (b->auto_save_file_name), 1, |
5268 | SBYTES (b->auto_save_file_name), stream); | |
1b335d29 | 5269 | putc ('\n', stream); |
aab12958 | 5270 | UNBLOCK_INPUT; |
e54d3b5d | 5271 | } |
17857782 | 5272 | |
f14b1c68 JB |
5273 | if (!NILP (current_only) |
5274 | && b != current_buffer) | |
5275 | continue; | |
e54d3b5d | 5276 | |
95385625 RS |
5277 | /* Don't auto-save indirect buffers. |
5278 | The base buffer takes care of it. */ | |
5279 | if (b->base_buffer) | |
5280 | continue; | |
5281 | ||
f14b1c68 JB |
5282 | /* Check for auto save enabled |
5283 | and file changed since last auto save | |
5284 | and file changed since last real save. */ | |
93c30b5f | 5285 | if (STRINGP (b->auto_save_file_name) |
95385625 | 5286 | && BUF_SAVE_MODIFF (b) < BUF_MODIFF (b) |
f14b1c68 | 5287 | && b->auto_save_modified < BUF_MODIFF (b) |
82c2d839 RS |
5288 | /* -1 means we've turned off autosaving for a while--see below. */ |
5289 | && XINT (b->save_length) >= 0 | |
f14b1c68 | 5290 | && (do_handled_files |
49307295 KH |
5291 | || NILP (Ffind_file_name_handler (b->auto_save_file_name, |
5292 | Qwrite_region)))) | |
f14b1c68 | 5293 | { |
b60247d9 RS |
5294 | EMACS_TIME before_time, after_time; |
5295 | ||
5296 | EMACS_GET_TIME (before_time); | |
5297 | ||
5298 | /* If we had a failure, don't try again for 20 minutes. */ | |
5299 | if (b->auto_save_failure_time >= 0 | |
5300 | && EMACS_SECS (before_time) - b->auto_save_failure_time < 1200) | |
5301 | continue; | |
5302 | ||
f14b1c68 JB |
5303 | if ((XFASTINT (b->save_length) * 10 |
5304 | > (BUF_Z (b) - BUF_BEG (b)) * 13) | |
5305 | /* A short file is likely to change a large fraction; | |
5306 | spare the user annoying messages. */ | |
5307 | && XFASTINT (b->save_length) > 5000 | |
5308 | /* These messages are frequent and annoying for `*mail*'. */ | |
5309 | && !EQ (b->filename, Qnil) | |
5310 | && NILP (no_message)) | |
5311 | { | |
5312 | /* It has shrunk too much; turn off auto-saving here. */ | |
a8c828be | 5313 | minibuffer_auto_raise = orig_minibuffer_auto_raise; |
fd91d0d4 | 5314 | message_with_string ("Buffer %s has shrunk a lot; auto save disabled in that buffer until next real save", |
60d67b83 | 5315 | b->name, 1); |
a8c828be | 5316 | minibuffer_auto_raise = 0; |
82c2d839 RS |
5317 | /* Turn off auto-saving until there's a real save, |
5318 | and prevent any more warnings. */ | |
46283abe | 5319 | XSETINT (b->save_length, -1); |
f14b1c68 JB |
5320 | Fsleep_for (make_number (1), Qnil); |
5321 | continue; | |
5322 | } | |
5323 | set_buffer_internal (b); | |
5324 | if (!auto_saved && NILP (no_message)) | |
5325 | message1 ("Auto-saving..."); | |
5326 | internal_condition_case (auto_save_1, Qt, auto_save_error); | |
5327 | auto_saved++; | |
5328 | b->auto_save_modified = BUF_MODIFF (b); | |
2acfd7ae | 5329 | XSETFASTINT (current_buffer->save_length, Z - BEG); |
f14b1c68 | 5330 | set_buffer_internal (old); |
b60247d9 RS |
5331 | |
5332 | EMACS_GET_TIME (after_time); | |
5333 | ||
5334 | /* If auto-save took more than 60 seconds, | |
5335 | assume it was an NFS failure that got a timeout. */ | |
5336 | if (EMACS_SECS (after_time) - EMACS_SECS (before_time) > 60) | |
5337 | b->auto_save_failure_time = EMACS_SECS (after_time); | |
f14b1c68 JB |
5338 | } |
5339 | } | |
570d7624 | 5340 | |
b67f2ca5 RS |
5341 | /* Prevent another auto save till enough input events come in. */ |
5342 | record_auto_save (); | |
570d7624 | 5343 | |
17857782 | 5344 | if (auto_saved && NILP (no_message)) |
f05b275b | 5345 | { |
5794dd61 | 5346 | if (old_message_p) |
31f3d831 | 5347 | { |
5794dd61 RS |
5348 | /* If we are going to restore an old message, |
5349 | give time to read ours. */ | |
83f8d903 | 5350 | sit_for (make_number (1), 0, 0); |
c71106e5 | 5351 | restore_message (); |
31f3d831 | 5352 | } |
ca730bf0 | 5353 | else if (!auto_save_error_occurred) |
31e31a15 CY |
5354 | /* Don't overwrite the error message if an error occurred. |
5355 | If we displayed a message and then restored a state | |
5794dd61 | 5356 | with no message, leave a "done" message on the screen. */ |
f05b275b KH |
5357 | message1 ("Auto-saving...done"); |
5358 | } | |
570d7624 | 5359 | |
ff4c9993 RS |
5360 | Vquit_flag = oquit; |
5361 | ||
5794dd61 | 5362 | /* This restores the message-stack status. */ |
e54d3b5d | 5363 | unbind_to (count, Qnil); |
570d7624 JB |
5364 | return Qnil; |
5365 | } | |
5366 | ||
5367 | DEFUN ("set-buffer-auto-saved", Fset_buffer_auto_saved, | |
8c1a1077 PJ |
5368 | Sset_buffer_auto_saved, 0, 0, 0, |
5369 | doc: /* Mark current buffer as auto-saved with its current text. | |
5370 | No auto-save file will be written until the buffer changes again. */) | |
5371 | () | |
570d7624 JB |
5372 | { |
5373 | current_buffer->auto_save_modified = MODIFF; | |
2acfd7ae | 5374 | XSETFASTINT (current_buffer->save_length, Z - BEG); |
b60247d9 RS |
5375 | current_buffer->auto_save_failure_time = -1; |
5376 | return Qnil; | |
5377 | } | |
5378 | ||
5379 | DEFUN ("clear-buffer-auto-save-failure", Fclear_buffer_auto_save_failure, | |
8c1a1077 PJ |
5380 | Sclear_buffer_auto_save_failure, 0, 0, 0, |
5381 | doc: /* Clear any record of a recent auto-save failure in the current buffer. */) | |
5382 | () | |
b60247d9 RS |
5383 | { |
5384 | current_buffer->auto_save_failure_time = -1; | |
570d7624 JB |
5385 | return Qnil; |
5386 | } | |
5387 | ||
5388 | DEFUN ("recent-auto-save-p", Frecent_auto_save_p, Srecent_auto_save_p, | |
8c1a1077 | 5389 | 0, 0, 0, |
68780e2a RS |
5390 | doc: /* Return t if current buffer has been auto-saved recently. |
5391 | More precisely, if it has been auto-saved since last read from or saved | |
5392 | in the visited file. If the buffer has no visited file, | |
5393 | then any auto-save counts as "recent". */) | |
8c1a1077 | 5394 | () |
570d7624 | 5395 | { |
95385625 | 5396 | return (SAVE_MODIFF < current_buffer->auto_save_modified) ? Qt : Qnil; |
570d7624 JB |
5397 | } |
5398 | \f | |
5399 | /* Reading and completing file names */ | |
6e710ae5 | 5400 | |
88208bb8 JD |
5401 | DEFUN ("next-read-file-uses-dialog-p", Fnext_read_file_uses_dialog_p, |
5402 | Snext_read_file_uses_dialog_p, 0, 0, 0, | |
5403 | doc: /* Return t if a call to `read-file-name' will use a dialog. | |
5404 | The return value is only relevant for a call to `read-file-name' that happens | |
5405 | before any other event (mouse or keypress) is handeled. */) | |
5406 | () | |
5407 | { | |
9e2a2647 | 5408 | #if defined (USE_MOTIF) || defined (HAVE_NTGUI) || defined (USE_GTK) |
88208bb8 JD |
5409 | if ((NILP (last_nonmenu_event) || CONSP (last_nonmenu_event)) |
5410 | && use_dialog_box | |
5411 | && use_file_dialog | |
5412 | && have_menus_p ()) | |
5413 | return Qt; | |
5414 | #endif | |
5415 | return Qnil; | |
5416 | } | |
d4a42098 | 5417 | |
dbd50d4b SM |
5418 | Lisp_Object |
5419 | Fread_file_name (prompt, dir, default_filename, mustmatch, initial, predicate) | |
59ffe07d | 5420 | Lisp_Object prompt, dir, default_filename, mustmatch, initial, predicate; |
570d7624 | 5421 | { |
570d7624 | 5422 | struct gcpro gcpro1, gcpro2; |
dbd50d4b | 5423 | Lisp_Object args[7]; |
a79485af | 5424 | |
71e1f69d | 5425 | GCPRO1 (default_filename); |
dbd50d4b SM |
5426 | args[0] = intern ("read-file-name"); |
5427 | args[1] = prompt; | |
5428 | args[2] = dir; | |
5429 | args[3] = default_filename; | |
5430 | args[4] = mustmatch; | |
5431 | args[5] = initial; | |
5432 | args[6] = predicate; | |
5433 | RETURN_UNGCPRO (Ffuncall (7, args)); | |
570d7624 | 5434 | } |
9c856db9 | 5435 | |
570d7624 | 5436 | \f |
dbda5089 GV |
5437 | void |
5438 | init_fileio_once () | |
5439 | { | |
5440 | /* Must be set before any path manipulation is performed. */ | |
5441 | XSETFASTINT (Vdirectory_sep_char, '/'); | |
5442 | } | |
5443 | ||
9c856db9 | 5444 | \f |
dfcf069d | 5445 | void |
570d7624 JB |
5446 | syms_of_fileio () |
5447 | { | |
f6c9b683 | 5448 | Qoperations = intern ("operations"); |
0bf2eed2 | 5449 | Qexpand_file_name = intern ("expand-file-name"); |
273e0829 | 5450 | Qsubstitute_in_file_name = intern ("substitute-in-file-name"); |
0bf2eed2 RS |
5451 | Qdirectory_file_name = intern ("directory-file-name"); |
5452 | Qfile_name_directory = intern ("file-name-directory"); | |
5453 | Qfile_name_nondirectory = intern ("file-name-nondirectory"); | |
642ef245 | 5454 | Qunhandled_file_name_directory = intern ("unhandled-file-name-directory"); |
0bf2eed2 | 5455 | Qfile_name_as_directory = intern ("file-name-as-directory"); |
32f4334d | 5456 | Qcopy_file = intern ("copy-file"); |
a6e6e718 | 5457 | Qmake_directory_internal = intern ("make-directory-internal"); |
b272d624 | 5458 | Qmake_directory = intern ("make-directory"); |
32f4334d RS |
5459 | Qdelete_directory = intern ("delete-directory"); |
5460 | Qdelete_file = intern ("delete-file"); | |
5461 | Qrename_file = intern ("rename-file"); | |
5462 | Qadd_name_to_file = intern ("add-name-to-file"); | |
5463 | Qmake_symbolic_link = intern ("make-symbolic-link"); | |
5464 | Qfile_exists_p = intern ("file-exists-p"); | |
5465 | Qfile_executable_p = intern ("file-executable-p"); | |
5466 | Qfile_readable_p = intern ("file-readable-p"); | |
32f4334d | 5467 | Qfile_writable_p = intern ("file-writable-p"); |
1f8653eb RS |
5468 | Qfile_symlink_p = intern ("file-symlink-p"); |
5469 | Qaccess_file = intern ("access-file"); | |
32f4334d | 5470 | Qfile_directory_p = intern ("file-directory-p"); |
adedc71d | 5471 | Qfile_regular_p = intern ("file-regular-p"); |
32f4334d RS |
5472 | Qfile_accessible_directory_p = intern ("file-accessible-directory-p"); |
5473 | Qfile_modes = intern ("file-modes"); | |
5474 | Qset_file_modes = intern ("set-file-modes"); | |
819da85b | 5475 | Qset_file_times = intern ("set-file-times"); |
32f4334d RS |
5476 | Qfile_newer_than_file_p = intern ("file-newer-than-file-p"); |
5477 | Qinsert_file_contents = intern ("insert-file-contents"); | |
5478 | Qwrite_region = intern ("write-region"); | |
5479 | Qverify_visited_file_modtime = intern ("verify-visited-file-modtime"); | |
3ec46acd | 5480 | Qset_visited_file_modtime = intern ("set-visited-file-modtime"); |
356a6224 | 5481 | Qauto_save_coding = intern ("auto-save-coding"); |
32f4334d | 5482 | |
f6c9b683 | 5483 | staticpro (&Qoperations); |
642ef245 | 5484 | staticpro (&Qexpand_file_name); |
273e0829 | 5485 | staticpro (&Qsubstitute_in_file_name); |
642ef245 JB |
5486 | staticpro (&Qdirectory_file_name); |
5487 | staticpro (&Qfile_name_directory); | |
5488 | staticpro (&Qfile_name_nondirectory); | |
5489 | staticpro (&Qunhandled_file_name_directory); | |
5490 | staticpro (&Qfile_name_as_directory); | |
15c65264 | 5491 | staticpro (&Qcopy_file); |
c34b559d | 5492 | staticpro (&Qmake_directory_internal); |
b272d624 | 5493 | staticpro (&Qmake_directory); |
15c65264 RS |
5494 | staticpro (&Qdelete_directory); |
5495 | staticpro (&Qdelete_file); | |
5496 | staticpro (&Qrename_file); | |
5497 | staticpro (&Qadd_name_to_file); | |
5498 | staticpro (&Qmake_symbolic_link); | |
5499 | staticpro (&Qfile_exists_p); | |
5500 | staticpro (&Qfile_executable_p); | |
5501 | staticpro (&Qfile_readable_p); | |
15c65264 | 5502 | staticpro (&Qfile_writable_p); |
1f8653eb RS |
5503 | staticpro (&Qaccess_file); |
5504 | staticpro (&Qfile_symlink_p); | |
15c65264 | 5505 | staticpro (&Qfile_directory_p); |
adedc71d | 5506 | staticpro (&Qfile_regular_p); |
15c65264 RS |
5507 | staticpro (&Qfile_accessible_directory_p); |
5508 | staticpro (&Qfile_modes); | |
5509 | staticpro (&Qset_file_modes); | |
819da85b | 5510 | staticpro (&Qset_file_times); |
15c65264 RS |
5511 | staticpro (&Qfile_newer_than_file_p); |
5512 | staticpro (&Qinsert_file_contents); | |
5513 | staticpro (&Qwrite_region); | |
5514 | staticpro (&Qverify_visited_file_modtime); | |
0a61794b | 5515 | staticpro (&Qset_visited_file_modtime); |
356a6224 | 5516 | staticpro (&Qauto_save_coding); |
642ef245 JB |
5517 | |
5518 | Qfile_name_history = intern ("file-name-history"); | |
5519 | Fset (Qfile_name_history, Qnil); | |
15c65264 RS |
5520 | staticpro (&Qfile_name_history); |
5521 | ||
570d7624 JB |
5522 | Qfile_error = intern ("file-error"); |
5523 | staticpro (&Qfile_error); | |
199607e4 | 5524 | Qfile_already_exists = intern ("file-already-exists"); |
570d7624 | 5525 | staticpro (&Qfile_already_exists); |
c0b7b21c RS |
5526 | Qfile_date_error = intern ("file-date-error"); |
5527 | staticpro (&Qfile_date_error); | |
505ab9bc RS |
5528 | Qexcl = intern ("excl"); |
5529 | staticpro (&Qexcl); | |
570d7624 | 5530 | |
5e570b75 | 5531 | #ifdef DOS_NT |
4c3c22f3 RS |
5532 | Qfind_buffer_file_type = intern ("find-buffer-file-type"); |
5533 | staticpro (&Qfind_buffer_file_type); | |
5e570b75 | 5534 | #endif /* DOS_NT */ |
4c3c22f3 | 5535 | |
b1d1b865 | 5536 | DEFVAR_LISP ("file-name-coding-system", &Vfile_name_coding_system, |
8c1a1077 | 5537 | doc: /* *Coding system for encoding file names. |
346ebf53 | 5538 | If it is nil, `default-file-name-coding-system' (which see) is used. */); |
b1d1b865 RS |
5539 | Vfile_name_coding_system = Qnil; |
5540 | ||
cd913586 KH |
5541 | DEFVAR_LISP ("default-file-name-coding-system", |
5542 | &Vdefault_file_name_coding_system, | |
8c1a1077 | 5543 | doc: /* Default coding system for encoding file names. |
346ebf53 | 5544 | This variable is used only when `file-name-coding-system' is nil. |
8c1a1077 | 5545 | |
346ebf53 | 5546 | This variable is set/changed by the command `set-language-environment'. |
8c1a1077 | 5547 | User should not set this variable manually, |
346ebf53 | 5548 | instead use `file-name-coding-system' to get a constant encoding |
8c1a1077 | 5549 | of file names regardless of the current language environment. */); |
cd913586 KH |
5550 | Vdefault_file_name_coding_system = Qnil; |
5551 | ||
0d420e88 BG |
5552 | Qformat_decode = intern ("format-decode"); |
5553 | staticpro (&Qformat_decode); | |
5554 | Qformat_annotate_function = intern ("format-annotate-function"); | |
5555 | staticpro (&Qformat_annotate_function); | |
2080470e KH |
5556 | Qafter_insert_file_set_coding = intern ("after-insert-file-set-coding"); |
5557 | staticpro (&Qafter_insert_file_set_coding); | |
efdc16c9 | 5558 | |
d6a3cc15 RS |
5559 | Qcar_less_than_car = intern ("car-less-than-car"); |
5560 | staticpro (&Qcar_less_than_car); | |
5561 | ||
570d7624 | 5562 | Fput (Qfile_error, Qerror_conditions, |
24b1ddad | 5563 | list2 (Qfile_error, Qerror)); |
570d7624 JB |
5564 | Fput (Qfile_error, Qerror_message, |
5565 | build_string ("File error")); | |
5566 | ||
5567 | Fput (Qfile_already_exists, Qerror_conditions, | |
24b1ddad | 5568 | list3 (Qfile_already_exists, Qfile_error, Qerror)); |
570d7624 JB |
5569 | Fput (Qfile_already_exists, Qerror_message, |
5570 | build_string ("File already exists")); | |
5571 | ||
c0b7b21c | 5572 | Fput (Qfile_date_error, Qerror_conditions, |
24b1ddad | 5573 | list3 (Qfile_date_error, Qfile_error, Qerror)); |
c0b7b21c RS |
5574 | Fput (Qfile_date_error, Qerror_message, |
5575 | build_string ("Cannot set file date")); | |
5576 | ||
199607e4 | 5577 | DEFVAR_LISP ("directory-sep-char", &Vdirectory_sep_char, |
8c1a1077 | 5578 | doc: /* Directory separator character for built-in functions that return file names. |
d57563b6 | 5579 | The value is always ?/. Don't use this variable, just use `/'. */); |
199607e4 | 5580 | |
1d1826db | 5581 | DEFVAR_LISP ("file-name-handler-alist", &Vfile_name_handler_alist, |
8c1a1077 PJ |
5582 | doc: /* *Alist of elements (REGEXP . HANDLER) for file names handled specially. |
5583 | If a file name matches REGEXP, then all I/O on that file is done by calling | |
5584 | HANDLER. | |
5585 | ||
5586 | The first argument given to HANDLER is the name of the I/O primitive | |
5587 | to be handled; the remaining arguments are the arguments that were | |
5588 | passed to that primitive. For example, if you do | |
5589 | (file-exists-p FILENAME) | |
5590 | and FILENAME is handled by HANDLER, then HANDLER is called like this: | |
5591 | (funcall HANDLER 'file-exists-p FILENAME) | |
5592 | The function `find-file-name-handler' checks this list for a handler | |
5593 | for its argument. */); | |
09121adc RS |
5594 | Vfile_name_handler_alist = Qnil; |
5595 | ||
0414b394 KH |
5596 | DEFVAR_LISP ("set-auto-coding-function", |
5597 | &Vset_auto_coding_function, | |
8c1a1077 PJ |
5598 | doc: /* If non-nil, a function to call to decide a coding system of file. |
5599 | Two arguments are passed to this function: the file name | |
5600 | and the length of a file contents following the point. | |
5601 | This function should return a coding system to decode the file contents. | |
5602 | It should check the file name against `auto-coding-alist'. | |
5603 | If no coding system is decided, it should check a coding system | |
5604 | specified in the heading lines with the format: | |
5605 | -*- ... coding: CODING-SYSTEM; ... -*- | |
5606 | or local variable spec of the tailing lines with `coding:' tag. */); | |
0414b394 | 5607 | Vset_auto_coding_function = Qnil; |
c9e82392 | 5608 | |
d6a3cc15 | 5609 | DEFVAR_LISP ("after-insert-file-functions", &Vafter_insert_file_functions, |
8c1a1077 | 5610 | doc: /* A list of functions to be called at the end of `insert-file-contents'. |
0cf9f5b5 RS |
5611 | Each is passed one argument, the number of characters inserted, |
5612 | with point at the start of the inserted text. Each function | |
5613 | should leave point the same, and return the new character count. | |
cf6d2357 RS |
5614 | If `insert-file-contents' is intercepted by a handler from |
5615 | `file-name-handler-alist', that handler is responsible for calling the | |
5616 | functions in `after-insert-file-functions' if appropriate. */); | |
d6a3cc15 RS |
5617 | Vafter_insert_file_functions = Qnil; |
5618 | ||
5619 | DEFVAR_LISP ("write-region-annotate-functions", &Vwrite_region_annotate_functions, | |
8c1a1077 PJ |
5620 | doc: /* A list of functions to be called at the start of `write-region'. |
5621 | Each is passed two arguments, START and END as for `write-region'. | |
5622 | These are usually two numbers but not always; see the documentation | |
5623 | for `write-region'. The function should return a list of pairs | |
5624 | of the form (POSITION . STRING), consisting of strings to be effectively | |
5625 | inserted at the specified positions of the file being written (1 means to | |
5626 | insert before the first byte written). The POSITIONs must be sorted into | |
5627 | increasing order. If there are several functions in the list, the several | |
28c3eb5a | 5628 | lists are merged destructively. Alternatively, the function can return |
bd235610 SM |
5629 | with a different buffer current; in that case it should pay attention |
5630 | to the annotations returned by previous functions and listed in | |
5631 | `write-region-annotations-so-far'.*/); | |
d6a3cc15 | 5632 | Vwrite_region_annotate_functions = Qnil; |
bd235610 SM |
5633 | staticpro (&Qwrite_region_annotate_functions); |
5634 | Qwrite_region_annotate_functions | |
5635 | = intern ("write-region-annotate-functions"); | |
d6a3cc15 | 5636 | |
6fc6f94b RS |
5637 | DEFVAR_LISP ("write-region-annotations-so-far", |
5638 | &Vwrite_region_annotations_so_far, | |
8c1a1077 PJ |
5639 | doc: /* When an annotation function is called, this holds the previous annotations. |
5640 | These are the annotations made by other annotation functions | |
5641 | that were already called. See also `write-region-annotate-functions'. */); | |
6fc6f94b RS |
5642 | Vwrite_region_annotations_so_far = Qnil; |
5643 | ||
82c2d839 | 5644 | DEFVAR_LISP ("inhibit-file-name-handlers", &Vinhibit_file_name_handlers, |
8c1a1077 PJ |
5645 | doc: /* A list of file name handlers that temporarily should not be used. |
5646 | This applies only to the operation `inhibit-file-name-operation'. */); | |
82c2d839 RS |
5647 | Vinhibit_file_name_handlers = Qnil; |
5648 | ||
a65970a0 | 5649 | DEFVAR_LISP ("inhibit-file-name-operation", &Vinhibit_file_name_operation, |
8c1a1077 | 5650 | doc: /* The operation for which `inhibit-file-name-handlers' is applicable. */); |
a65970a0 RS |
5651 | Vinhibit_file_name_operation = Qnil; |
5652 | ||
e54d3b5d | 5653 | DEFVAR_LISP ("auto-save-list-file-name", &Vauto_save_list_file_name, |
8c1a1077 PJ |
5654 | doc: /* File name in which we write a list of all auto save file names. |
5655 | This variable is initialized automatically from `auto-save-list-file-prefix' | |
5656 | shortly after Emacs reads your `.emacs' file, if you have not yet given it | |
5657 | a non-nil value. */); | |
e54d3b5d RS |
5658 | Vauto_save_list_file_name = Qnil; |
5659 | ||
699b53bc CY |
5660 | DEFVAR_LISP ("auto-save-visited-file-name", &Vauto_save_visited_file_name, |
5661 | doc: /* Non-nil says auto-save a buffer in the file it is visiting, when practical. | |
5662 | Normally auto-save files are written under other names. */); | |
5663 | Vauto_save_visited_file_name = Qnil; | |
5664 | ||
ccf61795 RF |
5665 | #ifdef HAVE_FSYNC |
5666 | DEFVAR_BOOL ("write-region-inhibit-fsync", &write_region_inhibit_fsync, | |
e3f509dd RF |
5667 | doc: /* *Non-nil means don't call fsync in `write-region'. |
5668 | This variable affects calls to `write-region' as well as save commands. | |
5669 | A non-nil value may result in data loss! */); | |
ccf61795 RF |
5670 | write_region_inhibit_fsync = 0; |
5671 | #endif | |
5672 | ||
6cf29fe8 JR |
5673 | DEFVAR_BOOL ("delete-by-moving-to-trash", &delete_by_moving_to_trash, |
5674 | doc: /* Specifies whether to use the system's trash can. | |
5675 | When non-nil, the function `move-file-to-trash' will be used by | |
5676 | `delete-file' and `delete-directory'. */); | |
5677 | delete_by_moving_to_trash = 0; | |
5678 | Qmove_file_to_trash = intern ("move-file-to-trash"); | |
5679 | staticpro (&Qmove_file_to_trash); | |
5680 | ||
642ef245 | 5681 | defsubr (&Sfind_file_name_handler); |
570d7624 JB |
5682 | defsubr (&Sfile_name_directory); |
5683 | defsubr (&Sfile_name_nondirectory); | |
642ef245 | 5684 | defsubr (&Sunhandled_file_name_directory); |
570d7624 JB |
5685 | defsubr (&Sfile_name_as_directory); |
5686 | defsubr (&Sdirectory_file_name); | |
5687 | defsubr (&Smake_temp_name); | |
5688 | defsubr (&Sexpand_file_name); | |
5689 | defsubr (&Ssubstitute_in_file_name); | |
5690 | defsubr (&Scopy_file); | |
9bbe01fb | 5691 | defsubr (&Smake_directory_internal); |
aa734e17 | 5692 | defsubr (&Sdelete_directory); |
570d7624 JB |
5693 | defsubr (&Sdelete_file); |
5694 | defsubr (&Srename_file); | |
5695 | defsubr (&Sadd_name_to_file); | |
570d7624 | 5696 | defsubr (&Smake_symbolic_link); |
570d7624 JB |
5697 | defsubr (&Sfile_name_absolute_p); |
5698 | defsubr (&Sfile_exists_p); | |
5699 | defsubr (&Sfile_executable_p); | |
5700 | defsubr (&Sfile_readable_p); | |
5701 | defsubr (&Sfile_writable_p); | |
1f8653eb | 5702 | defsubr (&Saccess_file); |
570d7624 JB |
5703 | defsubr (&Sfile_symlink_p); |
5704 | defsubr (&Sfile_directory_p); | |
b72dea2a | 5705 | defsubr (&Sfile_accessible_directory_p); |
f793dc6c | 5706 | defsubr (&Sfile_regular_p); |
570d7624 JB |
5707 | defsubr (&Sfile_modes); |
5708 | defsubr (&Sset_file_modes); | |
819da85b | 5709 | defsubr (&Sset_file_times); |
c24e9a53 RS |
5710 | defsubr (&Sset_default_file_modes); |
5711 | defsubr (&Sdefault_file_modes); | |
570d7624 JB |
5712 | defsubr (&Sfile_newer_than_file_p); |
5713 | defsubr (&Sinsert_file_contents); | |
5714 | defsubr (&Swrite_region); | |
d6a3cc15 | 5715 | defsubr (&Scar_less_than_car); |
570d7624 JB |
5716 | defsubr (&Sverify_visited_file_modtime); |
5717 | defsubr (&Sclear_visited_file_modtime); | |
f5d5eccf | 5718 | defsubr (&Svisited_file_modtime); |
570d7624 JB |
5719 | defsubr (&Sset_visited_file_modtime); |
5720 | defsubr (&Sdo_auto_save); | |
5721 | defsubr (&Sset_buffer_auto_saved); | |
b60247d9 | 5722 | defsubr (&Sclear_buffer_auto_save_failure); |
570d7624 JB |
5723 | defsubr (&Srecent_auto_save_p); |
5724 | ||
88208bb8 | 5725 | defsubr (&Snext_read_file_uses_dialog_p); |
85ffea93 | 5726 | |
697c17a2 | 5727 | #ifdef HAVE_SYNC |
85ffea93 | 5728 | defsubr (&Sunix_sync); |
483a2e10 | 5729 | #endif |
570d7624 | 5730 | } |
6b61353c KH |
5731 | |
5732 | /* arch-tag: 64ba3fd7-f844-4fb2-ba4b-427eb928786c | |
5733 | (do not change this comment) */ |